From 674a60748884dc55ee7091b7c23a41240e75f73c Mon Sep 17 00:00:00 2001 From: Matt Johnston Date: Tue, 1 Jun 2004 02:46:09 +0000 Subject: Makefile.in contains updated files required --HG-- extra : convert_revision : cc8a8c49dc70e632c352853a39801089b08149be --- dss.c | 399 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 399 insertions(+) create mode 100644 dss.c (limited to 'dss.c') diff --git a/dss.c b/dss.c new file mode 100644 index 0000000..ebe80c6 --- /dev/null +++ b/dss.c @@ -0,0 +1,399 @@ +/* + * Dropbear - a SSH2 server + * + * Copyright (c) 2002,2003 Matt Johnston + * All rights reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. */ + +#include "includes.h" +#include "dbutil.h" +#include "bignum.h" +#include "dss.h" +#include "buffer.h" +#include "ssh.h" +#include "random.h" + +/* Handle DSS (Digital Signature Standard), aka DSA (D.S. Algorithm), + * operations, such as key reading, signing, verification. Key generation + * is in gendss.c, since it isn't required in the server itself. + * + * See FIPS186 or the Handbook of Applied Cryptography for details of the + * algorithm */ + +#ifdef DROPBEAR_DSS + +/* Load a dss key from a buffer, initialising the values. + * The key will have the same format as buf_put_dss_key. + * These should be freed with dss_key_free. + * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */ +int buf_get_dss_pub_key(buffer* buf, dss_key *key) { + + assert(key != NULL); + key->p = m_malloc(sizeof(mp_int)); + key->q = m_malloc(sizeof(mp_int)); + key->g = m_malloc(sizeof(mp_int)); + key->y = m_malloc(sizeof(mp_int)); + m_mp_init_multi(key->p, key->q, key->g, key->y, NULL); + key->x = NULL; + + buf_incrpos(buf, 4+SSH_SIGNKEY_DSS_LEN); /* int + "ssh-dss" */ + if (buf_getmpint(buf, key->p) == DROPBEAR_FAILURE + || buf_getmpint(buf, key->q) == DROPBEAR_FAILURE + || buf_getmpint(buf, key->g) == DROPBEAR_FAILURE + || buf_getmpint(buf, key->y) == DROPBEAR_FAILURE) { + return DROPBEAR_FAILURE; + } + + if (mp_count_bits(key->p) < MIN_DSS_KEYLEN) { + dropbear_log(LOG_WARNING, "DSS key too short"); + return DROPBEAR_FAILURE; + } + + return DROPBEAR_SUCCESS; +} + +/* Same as buf_get_dss_pub_key, but reads a private "x" key at the end. + * Loads a private dss key from a buffer + * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */ +int buf_get_dss_priv_key(buffer* buf, dss_key *key) { + + int ret = DROPBEAR_FAILURE; + + assert(key != NULL); + + ret = buf_get_dss_pub_key(buf, key); + if (ret == DROPBEAR_FAILURE) { + return DROPBEAR_FAILURE; + } + + key->x = m_malloc(sizeof(mp_int)); + m_mp_init(key->x); + ret = buf_getmpint(buf, key->x); + + return ret; +} + + +/* Clear and free the memory used by a public or private key */ +void dss_key_free(dss_key *key) { + + TRACE(("enter dsa_key_free")); + if (key == NULL) { + TRACE(("enter dsa_key_free: key == NULL")); + return; + } + if (key->p) { + mp_clear(key->p); + m_free(key->p); + } + if (key->q) { + mp_clear(key->q); + m_free(key->q); + } + if (key->g) { + mp_clear(key->g); + m_free(key->g); + } + if (key->y) { + mp_clear(key->y); + m_free(key->y); + } + if (key->x) { + mp_clear(key->x); + m_free(key->x); + } + m_free(key); + TRACE(("leave dsa_key_free")); +} + +/* put the dss public key into the buffer in the required format: + * + * string "ssh-dss" + * mpint p + * mpint q + * mpint g + * mpint y + */ +void buf_put_dss_pub_key(buffer* buf, dss_key *key) { + + assert(key != NULL); + buf_putstring(buf, SSH_SIGNKEY_DSS, SSH_SIGNKEY_DSS_LEN); + buf_putmpint(buf, key->p); + buf_putmpint(buf, key->q); + buf_putmpint(buf, key->g); + buf_putmpint(buf, key->y); + +} + +/* Same as buf_put_dss_pub_key, but with the private "x" key appended */ +void buf_put_dss_priv_key(buffer* buf, dss_key *key) { + + assert(key != NULL); + buf_put_dss_pub_key(buf, key); + buf_putmpint(buf, key->x); + +} + +#ifdef DROPBEAR_SIGNKEY_VERIFY +/* Verify a DSS signature (in buf) made on data by the key given. + * returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */ +int buf_dss_verify(buffer* buf, dss_key *key, const unsigned char* data, + unsigned int len) { + + unsigned char msghash[SHA1_HASH_SIZE]; + hash_state hs; + int ret = DROPBEAR_FAILURE; + mp_int val1, val2, val3, val4; + char * string = NULL; + int stringlen; + + TRACE(("enter buf_dss_verify")); + assert(key != NULL); + + /* get blob, check length */ + string = buf_getstring(buf, &stringlen); + if (stringlen != 2*SHA1_HASH_SIZE) { + goto out; + } + + /* hash the data */ + sha1_init(&hs); + sha1_process(&hs, data, len); + sha1_done(&hs, msghash); + + m_mp_init_multi(&val1, &val2, &val3, &val4, NULL); + + /* create the signature - s' and r' are the received signatures in buf */ + /* w = (s')-1 mod q */ + /* let val1 = s' */ + if (mp_read_unsigned_bin(&val1, &string[SHA1_HASH_SIZE], SHA1_HASH_SIZE) + != MP_OKAY) { + goto out; + } + if (mp_cmp(&val1, key->q) != MP_LT) { + TRACE(("verify failed, s' >= q")); + goto out; + } + /* let val2 = w = (s')^-1 mod q*/ + if (mp_invmod(&val1, key->q, &val2) != MP_OKAY) { + goto out; + } + + /* u1 = ((SHA(M')w) mod q */ + /* let val1 = SHA(M') = msghash */ + if (mp_read_unsigned_bin(&val1, msghash, SHA1_HASH_SIZE) != MP_OKAY) { + goto out; + } + /* let val3 = u1 = ((SHA(M')w) mod q */ + if (mp_mulmod(&val1, &val2, key->q, &val3) != MP_OKAY) { + goto out; + } + + /* u2 = ((r')w) mod q */ + /* let val1 = r' */ + if (mp_read_unsigned_bin(&val1, &string[0], SHA1_HASH_SIZE) + != MP_OKAY) { + goto out; + } + if (mp_cmp(&val1, key->q) != MP_LT) { + TRACE(("verify failed, r' >= q")); + goto out; + } + /* let val4 = u2 = ((r')w) mod q */ + if (mp_mulmod(&val1, &val2, key->q, &val4) != MP_OKAY) { + goto out; + } + + /* v = (((g)^u1 (y)^u2) mod p) mod q */ + /* val2 = g^u1 mod p */ + if (mp_exptmod(key->g, &val3, key->p, &val2) != MP_OKAY) { + goto out; + } + /* val3 = y^u2 mod p */ + if (mp_exptmod(key->y, &val4, key->p, &val3) != MP_OKAY) { + goto out; + } + /* val4 = ((g)^u1 (y)^u2) mod p */ + if (mp_mulmod(&val2, &val3, key->p, &val4) != MP_OKAY) { + goto out; + } + /* val2 = v = (((g)^u1 (y)^u2) mod p) mod q */ + if (mp_mod(&val4, key->q, &val2) != MP_OKAY) { + goto out; + } + + /* check whether signatures verify */ + if (mp_cmp(&val2, &val1) == MP_EQ) { + /* good sig */ + ret = DROPBEAR_SUCCESS; + } + +out: + mp_clear_multi(&val1, &val2, &val3, &val4, NULL); + m_free(string); + + return ret; + +} +#endif /* DROPBEAR_SIGNKEY_VERIFY */ + +/* Sign the data presented with key, writing the signature contents + * to the buffer + * + * When DSS_PROTOK is #defined: + * The alternate k generation method is based on the method used in PuTTY. + * In particular to avoid being vulnerable to attacks using flaws in random + * generation of k, we use the following: + * + * proto_k = SHA512 ( SHA512(x) || SHA160(message) ) + * k = proto_k mod q + * + * Now we aren't relying on the random number generation to protect the private + * key x, which is a long term secret */ +void buf_put_dss_sign(buffer* buf, dss_key *key, const unsigned char* data, + unsigned int len) { + + unsigned char msghash[SHA1_HASH_SIZE]; + unsigned int writelen; + unsigned int i; +#ifdef DSS_PROTOK + unsigned char privkeyhash[SHA512_HASH_SIZE]; + unsigned char *privkeytmp; + unsigned char proto_k[SHA512_HASH_SIZE]; + mp_int dss_protok; +#else + unsigned char kbuf[SHA1_HASH_SIZE]; +#endif + mp_int dss_k, dss_m; + mp_int dss_temp1, dss_temp2; + mp_int dss_r, dss_s; + hash_state hs; + + TRACE(("enter buf_put_dss_sign")); + assert(key != NULL); + + /* hash the data */ + sha1_init(&hs); + sha1_process(&hs, data, len); + sha1_done(&hs, msghash); + + m_mp_init_multi(&dss_k, &dss_temp1, &dss_temp2, &dss_r, &dss_s, + &dss_m, NULL); +#ifdef DSS_PROTOK + /* hash the privkey */ + privkeytmp = mptobytes(key->x, &i); + sha512_init(&hs); + sha512_process(&hs, "the quick brown fox jumped over the lazy dog", 44); + sha512_process(&hs, privkeytmp, i); + sha512_done(&hs, privkeyhash); + m_burn(privkeytmp, i); + m_free(privkeytmp); + + /* calculate proto_k */ + sha512_init(&hs); + sha512_process(&hs, privkeyhash, SHA512_HASH_SIZE); + sha512_process(&hs, msghash, SHA1_HASH_SIZE); + sha512_done(&hs, proto_k); + + /* generate k */ + m_mp_init(&dss_protok); + bytestomp(&dss_protok, proto_k, SHA512_HASH_SIZE); + mp_mod(&dss_protok, key->q, &dss_k); + mp_clear(&dss_protok); + m_burn(proto_k, SHA512_HASH_SIZE); +#else /* DSS_PROTOK not defined*/ + do { + genrandom(kbuf, SHA1_HASH_SIZE); + if (mp_read_unsigned_bin(&dss_k, kbuf, SHA1_HASH_SIZE) != MP_OKAY) { + dropbear_exit("dss error"); + } + } while (mp_cmp(&dss_k, key->q) == MP_GT || mp_cmp_d(&dss_k, 0) != MP_GT); + m_burn(kbuf, SHA1_HASH_SIZE); +#endif + + /* now generate the actual signature */ + bytestomp(&dss_m, msghash, SHA1_HASH_SIZE); + + /* g^k mod p */ + if (mp_exptmod(key->g, &dss_k, key->p, &dss_temp1) != MP_OKAY) { + dropbear_exit("dss error"); + } + /* r = (g^k mod p) mod q */ + if (mp_mod(&dss_temp1, key->q, &dss_r) != MP_OKAY) { + dropbear_exit("dss error"); + } + + /* x*r mod q */ + if (mp_mulmod(&dss_r, key->x, key->q, &dss_temp1) != MP_OKAY) { + dropbear_exit("dss error"); + } + /* (SHA1(M) + xr) mod q) */ + if (mp_addmod(&dss_m, &dss_temp1, key->q, &dss_temp2) != MP_OKAY) { + dropbear_exit("dss error"); + } + + /* (k^-1) mod q */ + if (mp_invmod(&dss_k, key->q, &dss_temp1) != MP_OKAY) { + dropbear_exit("dss error"); + } + + /* s = (k^-1(SHA1(M) + xr)) mod q */ + if (mp_mulmod(&dss_temp1, &dss_temp2, key->q, &dss_s) != MP_OKAY) { + dropbear_exit("dss error"); + } + + buf_putstring(buf, SSH_SIGNKEY_DSS, SSH_SIGNKEY_DSS_LEN); + buf_putint(buf, 2*SHA1_HASH_SIZE); + + writelen = mp_unsigned_bin_size(&dss_r); + assert(writelen <= SHA1_HASH_SIZE); + /* need to pad to 160 bits with leading zeros */ + for (i = 0; i < SHA1_HASH_SIZE - writelen; i++) { + buf_putbyte(buf, 0); + } + if (mp_to_unsigned_bin(&dss_r, buf_getwriteptr(buf, writelen)) + != MP_OKAY) { + dropbear_exit("dss error"); + } + mp_clear(&dss_r); + buf_incrwritepos(buf, writelen); + + writelen = mp_unsigned_bin_size(&dss_s); + assert(writelen <= SHA1_HASH_SIZE); + /* need to pad to 160 bits with leading zeros */ + for (i = 0; i < SHA1_HASH_SIZE - writelen; i++) { + buf_putbyte(buf, 0); + } + if (mp_to_unsigned_bin(&dss_s, buf_getwriteptr(buf, writelen)) + != MP_OKAY) { + dropbear_exit("dss error"); + } + mp_clear(&dss_s); + buf_incrwritepos(buf, writelen); + + mp_clear_multi(&dss_k, &dss_temp1, &dss_temp1, &dss_r, &dss_s, + &dss_m, NULL); + + /* create the signature to return */ + + TRACE(("leave buf_put_dss_sign")); +} + +#endif /* DROPBEAR_DSS */ -- cgit v1.2.3 From 2d82f73484e588e9367657a25331afd4aa0bf976 Mon Sep 17 00:00:00 2001 From: Matt Johnston Date: Wed, 28 Jul 2004 16:44:16 +0000 Subject: Client mostly works up to password auth Need to rework algo-choosing etc, since server is now broken. --HG-- extra : convert_revision : 458dc4eed0e885e7c91633d4781d3348213a0e19 --- cli-auth.c | 10 +++++----- cli-kex.c | 10 ++++++++-- cli-service.c | 4 ++-- cli-session.c | 16 +++++++++++----- common-kex.c | 8 ++++++++ common-session.c | 1 + dss.c | 4 ++++ process-packet.c | 2 ++ rsa.c | 6 ++++++ service.h | 1 + session.h | 2 ++ signkey.c | 7 +++++++ 12 files changed, 57 insertions(+), 14 deletions(-) (limited to 'dss.c') diff --git a/cli-auth.c b/cli-auth.c index 952546e..d222d7e 100644 --- a/cli-auth.c +++ b/cli-auth.c @@ -31,7 +31,7 @@ void cli_get_user() { ses.authstate.username = m_strdup(pw->pw_name); } - TRACE(("leave cli_get_user: %s", cli_ses.username)); + TRACE(("leave cli_get_user: %s", ses.authstate.username)); } /* Send a "none" auth request to get available methods */ @@ -90,7 +90,7 @@ void recv_msg_userauth_failure() { tok = methods; /* tok stores the next method we'll compare */ for (i = 0; i <= methlen; i++) { if (methods[i] == '\0') { - TRACE(("auth method '%s'\n", tok)); + TRACE(("auth method '%s'", tok)); #ifdef DROPBEAR_PUBKEY_AUTH if (strncmp(AUTH_METHOD_PUBKEY, tok, AUTH_METHOD_PUBKEY_LEN) == 0) { @@ -103,9 +103,9 @@ void recv_msg_userauth_failure() { ses.authstate.authtypes |= AUTH_TYPE_PASSWORD; } #endif - tok = &methods[i]; /* Must make sure we don't use it after - the last loop, since it'll point - to something undefined */ + tok = &methods[i+1]; /* Must make sure we don't use it after the + last loop, since it'll point to something + undefined */ } } diff --git a/cli-kex.c b/cli-kex.c index 2577caf..d882423 100644 --- a/cli-kex.c +++ b/cli-kex.c @@ -43,7 +43,7 @@ void send_msg_kexdh_init() { cli_ses.dh_e = (mp_int*)m_malloc(sizeof(mp_int)); cli_ses.dh_x = (mp_int*)m_malloc(sizeof(mp_int)); - m_mp_init_multi(cli_ses.dh_e, cli_ses.dh_x); + m_mp_init_multi(cli_ses.dh_e, cli_ses.dh_x, NULL); gen_kexdh_vals(cli_ses.dh_e, cli_ses.dh_x); CHECKCLEARTOWRITE(); @@ -58,17 +58,23 @@ void recv_msg_kexdh_reply() { mp_int dh_f; sign_key *hostkey = NULL; - int type; + int type, keylen; + TRACE(("enter recv_msg_kexdh_reply")); type = ses.newkeys->algo_hostkey; + TRACE(("type is %d", type)); hostkey = new_sign_key(); + keylen = buf_getint(ses.payload); + if (buf_get_pub_key(ses.payload, hostkey, &type) != DROPBEAR_SUCCESS) { + TRACE(("failed getting pubkey")); dropbear_exit("Bad KEX packet"); } m_mp_init(&dh_f); if (buf_getmpint(ses.payload, &dh_f) != DROPBEAR_SUCCESS) { + TRACE(("failed getting mpint")); dropbear_exit("Bad KEX packet"); } diff --git a/cli-service.c b/cli-service.c index c873919..8ba06c6 100644 --- a/cli-service.c +++ b/cli-service.c @@ -12,8 +12,8 @@ void send_msg_service_request(char* servicename) { CHECKCLEARTOWRITE(); - buf_putbyte(ses.payload, SSH_MSG_SERVICE_REQUEST); - buf_putstring(ses.payload, servicename, strlen(servicename)); + buf_putbyte(ses.writepayload, SSH_MSG_SERVICE_REQUEST); + buf_putstring(ses.writepayload, servicename, strlen(servicename)); encrypt_packet(); TRACE(("leave send_msg_service_request")); diff --git a/cli-session.c b/cli-session.c index 9f80bd1..2ae2719 100644 --- a/cli-session.c +++ b/cli-session.c @@ -21,6 +21,7 @@ static const packettype cli_packettypes[] = { {SSH_MSG_KEXINIT, recv_msg_kexinit}, {SSH_MSG_KEXDH_REPLY, recv_msg_kexdh_reply}, // client {SSH_MSG_NEWKEYS, recv_msg_newkeys}, + {SSH_MSG_SERVICE_ACCEPT, recv_msg_service_accept}, // client {SSH_MSG_CHANNEL_DATA, recv_msg_channel_data}, {SSH_MSG_CHANNEL_WINDOW_ADJUST, recv_msg_channel_window_adjust}, {SSH_MSG_GLOBAL_REQUEST, recv_msg_global_request_remotetcp}, @@ -30,8 +31,8 @@ static const packettype cli_packettypes[] = { {SSH_MSG_CHANNEL_CLOSE, recv_msg_channel_close}, {SSH_MSG_CHANNEL_OPEN_CONFIRMATION, recv_msg_channel_open_confirmation}, {SSH_MSG_CHANNEL_OPEN_FAILURE, recv_msg_channel_open_failure}, - {SSH_MSG_USERAUTH_FAILURE, recv_msg_userauth_failure}, - {SSH_MSG_USERAUTH_SUCCESS, recv_msg_userauth_success}, + {SSH_MSG_USERAUTH_FAILURE, recv_msg_userauth_failure}, // client + {SSH_MSG_USERAUTH_SUCCESS, recv_msg_userauth_success}, // client {0, 0} /* End */ }; @@ -90,11 +91,11 @@ static void cli_sessionloop() { TRACE(("enter cli_sessionloop")); - if (cli_ses.kex_state == KEX_NOTHING && ses.kexstate.recvkexinit) { - cli_ses.state = KEXINIT_RCVD; + if (ses.lastpacket == SSH_MSG_KEXINIT && cli_ses.kex_state == KEX_NOTHING) { + cli_ses.kex_state = KEXINIT_RCVD; } - if (cli_ses.state == KEXINIT_RCVD) { + if (cli_ses.kex_state == KEXINIT_RCVD) { /* We initiate the KEXDH. If DH wasn't the correct type, the KEXINIT * negotiation would have failed. */ @@ -120,6 +121,7 @@ static void cli_sessionloop() { * in normal operation */ if (ses.kexstate.donefirstkex == 0) { TRACE(("XXX XXX might be bad! leave cli_sessionloop: haven't donefirstkex")); + return; } switch (cli_ses.state) { @@ -129,6 +131,7 @@ static void cli_sessionloop() { * userauth */ send_msg_service_request(SSH_SERVICE_USERAUTH); cli_ses.state = SERVICE_AUTH_REQ_SENT; + TRACE(("leave cli_sessionloop: sent userauth service req")); return; /* userauth code */ @@ -136,10 +139,12 @@ static void cli_sessionloop() { cli_get_user(); cli_auth_getmethods(); cli_ses.state = USERAUTH_METHODS_SENT; + TRACE(("leave cli_sessionloop: sent userauth methods req")); return; case USERAUTH_FAIL_RCVD: cli_auth_try(); + TRACE(("leave cli_sessionloop: cli_auth_try")); return; /* XXX more here needed */ @@ -149,6 +154,7 @@ static void cli_sessionloop() { break; } + TRACE(("leave cli_sessionloop: fell out")); } diff --git a/common-kex.c b/common-kex.c index 9847a48..07b221b 100644 --- a/common-kex.c +++ b/common-kex.c @@ -613,6 +613,7 @@ static void read_kex_algos() { erralgo = "kex"; goto error; } + TRACE(("kex algo %s", algo->name)); ses.newkeys->algo_kex = algo->val; /* server_host_key_algorithms */ @@ -622,6 +623,7 @@ static void read_kex_algos() { erralgo = "hostkey"; goto error; } + TRACE(("hostkey algo %s", algo->name)); ses.newkeys->algo_hostkey = algo->val; /* encryption_algorithms_client_to_server */ @@ -631,6 +633,7 @@ static void read_kex_algos() { goto error; } ses.newkeys->recv_algo_crypt = (struct dropbear_cipher*)algo->data; + TRACE(("enc algo recv %s", algo->name)); /* encryption_algorithms_server_to_client */ algo = ses.buf_match_algo(ses.payload, sshciphers, &goodguess); @@ -639,6 +642,7 @@ static void read_kex_algos() { goto error; } ses.newkeys->trans_algo_crypt = (struct dropbear_cipher*)algo->data; + TRACE(("enc algo trans %s", algo->name)); /* mac_algorithms_client_to_server */ algo = ses.buf_match_algo(ses.payload, sshhashes, &goodguess); @@ -647,6 +651,7 @@ static void read_kex_algos() { goto error; } ses.newkeys->recv_algo_mac = (struct dropbear_hash*)algo->data; + TRACE(("mac algo recv %s", algo->name)); /* mac_algorithms_server_to_client */ algo = ses.buf_match_algo(ses.payload, sshhashes, &goodguess); @@ -655,6 +660,7 @@ static void read_kex_algos() { goto error; } ses.newkeys->trans_algo_mac = (struct dropbear_hash*)algo->data; + TRACE(("mac algo trans %s", algo->name)); /* compression_algorithms_client_to_server */ algo = ses.buf_match_algo(ses.payload, sshcompress, &goodguess); @@ -663,6 +669,7 @@ static void read_kex_algos() { goto error; } ses.newkeys->recv_algo_comp = algo->val; + TRACE(("comp algo recv %s", algo->name)); /* compression_algorithms_server_to_client */ algo = ses.buf_match_algo(ses.payload, sshcompress, &goodguess); @@ -671,6 +678,7 @@ static void read_kex_algos() { goto error; } ses.newkeys->trans_algo_comp = algo->val; + TRACE(("comp algo trans %s", algo->name)); /* languages_client_to_server */ buf_eatstring(ses.payload); diff --git a/common-session.c b/common-session.c index 93e7c74..79166f4 100644 --- a/common-session.c +++ b/common-session.c @@ -75,6 +75,7 @@ void common_session_init(int sock, char* remotehost) { ses.requirenext = SSH_MSG_KEXINIT; ses.dataallowed = 0; /* don't send data yet, we'll wait until after kex */ ses.ignorenext = 0; + ses.lastpacket = 0; /* set all the algos to none */ ses.keys = (struct key_context*)m_malloc(sizeof(struct key_context)); diff --git a/dss.c b/dss.c index ebe80c6..74b92c7 100644 --- a/dss.c +++ b/dss.c @@ -45,6 +45,7 @@ * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */ int buf_get_dss_pub_key(buffer* buf, dss_key *key) { + TRACE(("enter buf_get_dss_pub_key")); assert(key != NULL); key->p = m_malloc(sizeof(mp_int)); key->q = m_malloc(sizeof(mp_int)); @@ -58,14 +59,17 @@ int buf_get_dss_pub_key(buffer* buf, dss_key *key) { || buf_getmpint(buf, key->q) == DROPBEAR_FAILURE || buf_getmpint(buf, key->g) == DROPBEAR_FAILURE || buf_getmpint(buf, key->y) == DROPBEAR_FAILURE) { + TRACE(("leave buf_get_dss_pub_key: failed reading mpints")); return DROPBEAR_FAILURE; } if (mp_count_bits(key->p) < MIN_DSS_KEYLEN) { dropbear_log(LOG_WARNING, "DSS key too short"); + TRACE(("leave buf_get_dss_pub_key: short key")); return DROPBEAR_FAILURE; } + TRACE(("leave buf_get_dss_pub_key: success")); return DROPBEAR_SUCCESS; } diff --git a/process-packet.c b/process-packet.c index f9f6dee..3e6b79c 100644 --- a/process-packet.c +++ b/process-packet.c @@ -50,6 +50,8 @@ void process_packet() { type = buf_getbyte(ses.payload); TRACE(("process_packet: packet type = %d", type)); + ses.lastpacket = type; + /* These packets we can receive at any time */ switch(type) { diff --git a/rsa.c b/rsa.c index 936b2c8..2d63c02 100644 --- a/rsa.c +++ b/rsa.c @@ -205,6 +205,8 @@ int buf_rsa_verify(buffer * buf, rsa_key *key, const unsigned char* data, mp_int *rsa_em = NULL; int ret = DROPBEAR_FAILURE; + TRACE(("enter buf_rsa_verify")); + assert(key != NULL); m_mp_init_multi(&rsa_mdash, &rsa_s, NULL); @@ -217,6 +219,7 @@ int buf_rsa_verify(buffer * buf, rsa_key *key, const unsigned char* data, if (mp_read_unsigned_bin(&rsa_s, buf_getptr(buf, buf->len - buf->pos), buf->len - buf->pos) != MP_OKAY) { + TRACE(("failed reading rsa_s")); goto out; } @@ -230,17 +233,20 @@ int buf_rsa_verify(buffer * buf, rsa_key *key, const unsigned char* data, rsa_em = rsa_pad_em(key, data, len); if (mp_exptmod(&rsa_s, key->e, key->n, &rsa_mdash) != MP_OKAY) { + TRACE(("failed exptmod rsa_s")); goto out; } if (mp_cmp(rsa_em, &rsa_mdash) == MP_EQ) { /* signature is valid */ + TRACE(("success!")); ret = DROPBEAR_SUCCESS; } out: mp_clear_multi(rsa_em, &rsa_mdash, &rsa_s, NULL); m_free(rsa_em); + TRACE(("leave buf_rsa_verify: ret %d", ret)); return ret; } diff --git a/service.h b/service.h index 5f50347..197d8d1 100644 --- a/service.h +++ b/service.h @@ -27,5 +27,6 @@ void recv_msg_service_request(); /* Server */ void send_msg_service_request(); /* Client */ +void recv_msg_service_accept(); /* Client */ #endif /* _SERVICE_H_ */ diff --git a/session.h b/session.h index 4a7e0ac..bf6adb3 100644 --- a/session.h +++ b/session.h @@ -119,6 +119,8 @@ struct sshsession { unsigned char ignorenext; /* whether to ignore the next packet, used for kex_follows stuff */ + + unsigned char lastpacket; /* What the last received packet type was */ diff --git a/signkey.c b/signkey.c index 5fcdbbf..faf3739 100644 --- a/signkey.c +++ b/signkey.c @@ -52,8 +52,12 @@ int buf_get_pub_key(buffer *buf, sign_key *key, int *type) { unsigned char* ident; unsigned int len; + TRACE(("enter buf_get_pub_key")); + printhex(buf_getptr(buf, 0x99), 0x99); + ident = buf_getstring(buf, &len); + #ifdef DROPBEAR_DSS if (memcmp(ident, SSH_SIGNKEY_DSS, len) == 0 && (*type == DROPBEAR_SIGNKEY_ANY @@ -78,6 +82,7 @@ int buf_get_pub_key(buffer *buf, sign_key *key, int *type) { return buf_get_rsa_pub_key(buf, key->rsakey); } #endif + TRACE(("leave buf_get_pub_key: didn't match the type we want (%d versus '%s'len %d)", *type, ident, len)); m_free(ident); @@ -352,6 +357,8 @@ int buf_verify(buffer * buf, sign_key *key, const unsigned char *data, unsigned char * ident = NULL; unsigned int identlen = 0; + TRACE(("enter buf_verify")); + bloblen = buf_getint(buf); ident = buf_getstring(buf, &identlen); -- cgit v1.2.3 From 8e1ec24f55be1a9af2595a58bb4b805bebd7fa9d Mon Sep 17 00:00:00 2001 From: Matt Johnston Date: Thu, 12 Aug 2004 16:41:58 +0000 Subject: Merging in the changes from 0.41-0.43 main Dropbear tree --HG-- extra : convert_revision : 4c3428781bc8faf0fd7cadd7099fbd7f4ea386e7 --- buffer.c | 9 +- channel.h | 3 + cli-tcpfwd.c | 9 +- common-channel.c | 27 +++++- configure.in | 2 +- dbutil.c | 6 +- debian/README.runit | 46 +++++++++ debian/changelog | 52 +++++++++++ debian/control | 24 +++-- debian/copyright.in | 6 +- debian/dropbear.README.Debian | 41 +++++++++ debian/dropbear.conffiles | 3 + debian/dropbear.docs | 3 + debian/dropbear.init | 60 ++++-------- debian/dropbear.postinst | 68 ++++++++++++++ debian/dropbear.postrm | 12 +++ debian/dropbear.prerm | 11 +++ debian/implicit | 79 ++++++++++++++++ debian/rules | 210 +++++++++++++++++------------------------- debian/service/log | 2 + debian/service/run | 3 + dropbearkey.c | 1 - dss.c | 4 +- gendss.c | 1 - includes.h | 6 +- options.h | 7 +- packet.c | 4 +- random.c | 5 +- rsa.c | 16 ++-- signkey.c | 4 +- svr-agentfwd.c | 4 +- svr-auth.c | 4 +- svr-authpasswd.c | 8 +- svr-authpubkey.c | 2 +- svr-chansession.c | 35 +++++-- svr-tcpfwd.c | 9 +- svr-x11fwd.c | 4 +- 37 files changed, 554 insertions(+), 236 deletions(-) create mode 100644 debian/README.runit create mode 100644 debian/dropbear.README.Debian create mode 100644 debian/dropbear.conffiles create mode 100644 debian/dropbear.docs create mode 100644 debian/dropbear.postinst create mode 100644 debian/dropbear.postrm create mode 100644 debian/dropbear.prerm create mode 100644 debian/implicit create mode 100644 debian/service/log create mode 100644 debian/service/run (limited to 'dss.c') diff --git a/buffer.c b/buffer.c index 7181fca..df608d9 100644 --- a/buffer.c +++ b/buffer.c @@ -34,8 +34,8 @@ #define BUF_MAX_INCR 1000000000 #define BUF_MAX_SIZE 1000000000 -/* avoid excessively large numbers, > 5000 bit */ -#define BUF_MAX_MPINT (5000 / 8) +/* avoid excessively large numbers, > ~8192 bits */ +#define BUF_MAX_MPINT (8240 / 8) /* Create (malloc) a new buffer of size */ buffer* buf_new(unsigned int size) { @@ -76,7 +76,8 @@ void buf_burn(buffer* buf) { } -/* resize a buffer, pos and len will be repositioned if required */ +/* resize a buffer, pos and len will be repositioned if required when + * downsizing */ void buf_resize(buffer *buf, unsigned int newsize) { if (newsize > BUF_MAX_SIZE) { @@ -151,6 +152,8 @@ void buf_incrpos(buffer* buf, int incr) { /* Get a byte from the buffer and increment the pos */ unsigned char buf_getbyte(buffer* buf) { + /* This check is really just ==, but the >= allows us to check for the + * assert()able case of pos > len, which should _never_ happen. */ if (buf->pos >= buf->len) { dropbear_exit("bad buf_getbyte"); } diff --git a/channel.h b/channel.h index e1bdae2..2289de1 100644 --- a/channel.h +++ b/channel.h @@ -41,6 +41,9 @@ #define SSH_OPEN_UNKNOWN_CHANNEL_TYPE 3 #define SSH_OPEN_RESOURCE_SHORTAGE 4 +/* Not a real type */ +#define SSH_OPEN_IN_PROGRESS 99 + #define MAX_CHANNELS 60 /* simple mem restriction, includes each tcp/x11 connection, so can't be _too_ small */ diff --git a/cli-tcpfwd.c b/cli-tcpfwd.c index 52268b9..8d8e605 100644 --- a/cli-tcpfwd.c +++ b/cli-tcpfwd.c @@ -120,7 +120,7 @@ static int newtcpforwarded(struct Channel * channel) { struct TCPFwdList * iter = NULL; char portstring[NI_MAXSERV]; int sock; - int ret = DROPBEAR_FAILURE; + int err = SSH_OPEN_ADMINISTRATIVELY_PROHIBITED; /* We don't care what address they connected to */ buf_eatstring(ses.payload); @@ -148,6 +148,7 @@ static int newtcpforwarded(struct Channel * channel) { sock = connect_remote(iter->connectaddr, portstring, 1, NULL); if (sock < 0) { TRACE(("leave newtcpdirect: sock failed")); + err = SSH_OPEN_CONNECT_FAILED; goto out; } @@ -160,9 +161,9 @@ static int newtcpforwarded(struct Channel * channel) { channel->infd = sock; channel->initconn = 1; - ret = DROPBEAR_SUCCESS; + err = SSH_OPEN_IN_PROGRESS; out: - TRACE(("leave newtcpdirect: ret %d", ret)); - return ret; + TRACE(("leave newtcpdirect: err %d", err)); + return err; } diff --git a/common-channel.c b/common-channel.c index 5079031..64ea466 100644 --- a/common-channel.c +++ b/common-channel.c @@ -172,6 +172,7 @@ void channelio(fd_set *readfd, fd_set *writefd) { struct Channel *channel; unsigned int i; + int ret; /* iterate through all the possible channels */ for (i = 0; i < ses.chansize; i++) { @@ -196,8 +197,15 @@ void channelio(fd_set *readfd, fd_set *writefd) { * see if it has errors */ if (channel->infd >= 0 && channel->infd != channel->outfd && FD_ISSET(channel->infd, readfd)) { - int ret; - ret = write(channel->infd, NULL, 0); + if (channel->initconn) { + /* Handling for "in progress" connection - this is needed + * to avoid spinning 100% CPU when we connect to a server + * which doesn't send anything (tcpfwding) */ + checkinitdone(channel); + continue; /* Important not to use the channel after + checkinitdone(), as it may be NULL */ + } + ret = write(channel->infd, NULL, 0); /* Fake write */ if (ret < 0 && errno != EINTR && errno != EAGAIN) { closeinfd(channel); } @@ -209,9 +217,8 @@ void channelio(fd_set *readfd, fd_set *writefd) { checkinitdone(channel); continue; /* Important not to use the channel after checkinitdone(), as it may be NULL */ - } else { - writechannel(channel); } + writechannel(channel); } /* now handle any of the channel-closing type stuff */ @@ -285,10 +292,14 @@ static void checkinitdone(struct Channel *channel) { if (getsockopt(channel->infd, SOL_SOCKET, SO_ERROR, &val, &vallen) || val != 0) { + send_msg_channel_open_failure(channel->remotechan, + SSH_OPEN_CONNECT_FAILED, "", ""); close(channel->infd); deletechannel(channel); TRACE(("leave checkinitdone: fail")); } else { + send_msg_channel_open_confirmation(channel, channel->recvwindow, + channel->recvmaxpacket); channel->outfd = channel->infd; channel->initconn = 0; TRACE(("leave checkinitdone: success")); @@ -489,6 +500,7 @@ static void removechannel(struct Channel * channel) { TRACE(("channel index is %d", channel->index)); buf_free(channel->writebuf); + channel->writebuf = NULL; /* close the FDs in case they haven't been done * yet (ie they were shutdown etc */ @@ -497,6 +509,7 @@ static void removechannel(struct Channel * channel) { if (channel->errfd >= 0) { close(channel->errfd); } + channel->typedata = NULL; deletechannel(channel); @@ -587,6 +600,7 @@ static void send_msg_channel_data(struct Channel *channel, int isextended, TRACE(("leave send_msg_channel_data: read err %d", channel->index)); } buf_free(buf); + buf = NULL; return; } buf_incrlen(buf, len); @@ -601,6 +615,7 @@ static void send_msg_channel_data(struct Channel *channel, int isextended, buf_putstring(ses.writepayload, buf_getptr(buf, len), len); buf_free(buf); + buf = NULL; channel->transwindow -= len; @@ -764,6 +779,10 @@ void recv_msg_channel_open() { if (channel->type->inithandler) { ret = channel->type->inithandler(channel); if (ret > 0) { + if (ret == SSH_OPEN_IN_PROGRESS) { + /* We'll send the confirmation later */ + goto cleanup; + } errtype = ret; deletechannel(channel); TRACE(("inithandler returned failure %d", ret)); diff --git a/configure.in b/configure.in index bffd0da..10988c2 100644 --- a/configure.in +++ b/configure.in @@ -169,7 +169,7 @@ AC_ARG_ENABLE(shadow, # Checks for header files. AC_HEADER_STDC AC_HEADER_SYS_WAIT -AC_CHECK_HEADERS([fcntl.h limits.h netinet/in.h netinet/tcp.h stdlib.h string.h sys/socket.h sys/time.h termios.h unistd.h crypt.h pty.h ioctl.h libutil.h libgen.h inttypes.h stropts.h utmp.h utmpx.h lastlog.h paths.h util.h netdb.h sys/dirent.h]) +AC_CHECK_HEADERS([fcntl.h limits.h netinet/in.h netinet/tcp.h stdlib.h string.h sys/socket.h sys/time.h termios.h unistd.h crypt.h pty.h ioctl.h libutil.h libgen.h inttypes.h stropts.h utmp.h utmpx.h lastlog.h paths.h util.h netdb.h]) # Checks for typedefs, structures, and compiler characteristics. AC_C_CONST diff --git a/dbutil.c b/dbutil.c index 5436cbb..30b5708 100644 --- a/dbutil.c +++ b/dbutil.c @@ -121,7 +121,7 @@ void dropbear_trace(const char* format, ...) { int dropbear_listen(const char* address, const char* port, int *socks, unsigned int sockcount, char **errstring, int *maxfd) { - struct addrinfo hints, *res, *res0; + struct addrinfo hints, *res = NULL, *res0 = NULL; int err; unsigned int nsock; struct linger linger; @@ -273,7 +273,7 @@ int connect_remote(const char* remotehost, const char* remoteport, } if (connect(sock, res->ai_addr, res->ai_addrlen) < 0) { - if (errno == EINPROGRESS) { + if (errno == EINPROGRESS && nonblocking) { TRACE(("Connect in progress")); break; } else { @@ -287,7 +287,7 @@ int connect_remote(const char* remotehost, const char* remoteport, break; /* Success */ } - if (sock < 0) { + if (sock < 0 && !(errno == EINPROGRESS && nonblocking)) { /* Failed */ if (errstring != NULL && *errstring == NULL) { int len; diff --git a/debian/README.runit b/debian/README.runit new file mode 100644 index 0000000..4ac2814 --- /dev/null +++ b/debian/README.runit @@ -0,0 +1,46 @@ +Using the dropbear SSH server with runit's services supervision +--------------------------------------------------------------- + +The dropbear SSH server is perfectly suited to be run under runit's +service supervision, and this package already has prepared an adequate +service directory. Follow these steps to enable the dropbear service +using the runit package. + +If not yet installed on your system, install the runit package, and make +sure its service supervision is enabled (it's by default) + + # apt-get install runit + +Make sure the dropbear service normally handled through the sysv init +script is stopped + + # /etc/init.d/dropbear stop + +Create the system user ``dropbearlog'' which will run the logger service, +and own the logs + + # adduser --system --home /var/log/dropbear --no-create-home dropbearlog + +Create the log directory and make the newly created system user the owner +of this directory + + # mkdir -p /var/log/dropbear && chown dropbearlog /var/log/dropbear + +Optionally adjust the configuration of the dropbear service by editing the +run script + + # vi /etc/dropbear/run + +Finally enable the service by linking dropbear's service directory to +/var/service/. The service will be started within five seconds, and +automatically at boot time. The sysv init script is disabled; see the +runsvctrl(8) program for information on how to control services handled by +runit. See the svlogd(8) program on how to configure the log service. + + # ln -s /etc/dropbear /var/service/ + +Optionally check the status of the service a few seconds later + + # runsvstat -l /var/service/dropbear + + -- Gerrit Pape , Sun, 16 May 2004 15:52:34 +0000 diff --git a/debian/changelog b/debian/changelog index cb7253f..d9da388 100644 --- a/debian/changelog +++ b/debian/changelog @@ -1,3 +1,55 @@ +dropbear (0.43-1) unstable; urgency=high + + * New upstream release 0.43 + * SECURITY: Don't attempt to free uninitialised buffers in DSS verification + code + * Handle portforwarding to servers which don't send any initial data + (Closes: #258426) + + -- Matt Johnston Fri, 16 July 2004 17:44:54 +0800 + +dropbear (0.42-1) unstable; urgency=low + + * New upstream release 0.42 + + -- Matt Johnston Wed, 16 June 2004 12:44:54 +0800 + +dropbear (0.41-3) unstable; urgency=low + + * 1st upload to the Debian archive (closes: #216553). + * debian/diff/cvs-20040520.diff: new; stable cvs snapshot. + * debian/rules: new target patch: apply diffs in debian/diff/, reverse + apply in target clean; install man pages. + * debian/control: Priority: optional. + + -- Gerrit Pape Sun, 23 May 2004 08:32:37 +0000 + +dropbear (0.41-2) unstable; urgency=low + + * new maintainer. + * debian/control: no longer Build-Depends: debhelper; Build-Depends: + libz-dev; Standards-Version: 3.6.1.0; Suggests: runit; update + descriptions. + * debian/rules: stop using debhelper, use implicit rules; cleanup; + install dropbearconvert into /usr/lib/dropbear/. + * debian/impicit: new; implicit rules. + * debian/copyright.in: adapt. + * debian/dropbear.init: minor adaptions; test for dropbear service + directory. + * debian/README.runit: new; how to use dropbear with runit. + * debian/README.Debian, debian/docs: rename to debian/dropbear.*. + * debian/dropbear.docs: add debian/README.runit + * debian/conffiles: rename to debian/dropbear.conffiles; add init + script, and run scripts. + * debian/postinst: rename to debian/dropbear.postinst; adapt; use + invloke-rc.d dropbear start. + * debian/dropbear.prerm: new; invoke-rc.d dropbear stop. + * debian/postrm: rename to debian/dropbear.postrm; adapt; clean up + service directories. + * debian/compat, debian/dirs, dropbear.default: remove; obsolete. + + -- Gerrit Pape Sun, 16 May 2004 16:50:55 +0000 + dropbear (0.41-1) unstable; urgency=low * Updated to 0.41 release. diff --git a/debian/control b/debian/control index e528454..33c717c 100644 --- a/debian/control +++ b/debian/control @@ -1,14 +1,20 @@ Source: dropbear Section: net -Priority: standard -Maintainer: Grahame Bowland -Build-Depends: debhelper (>> 4.0.0), zlib1g-dev -Standards-Version: 3.5.8 +Priority: optional +Maintainer: Gerrit Pape +Build-Depends: libz-dev +Standards-Version: 3.6.1.0 Package: dropbear Architecture: any -Depends: ${shlibs:Depends} ${misc:Depends} -Suggests: ssh -Description: a minimal SSH2 server - A small secure shell version 2 server. - +Depends: ${shlibs:Depends} +Suggests: ssh, runit +Description: lightweight SSH2 server + dropbear is a SSH 2 server designed to be small enough to be used in small + memory environments, while still being functional and secure enough for + general use. + . + It implements most required features of the SSH 2 protocol, and other + features such as X11 and authentication agent forwarding. + . + See http://matt.ucc.asn.au/dropbear/dropbear.html diff --git a/debian/copyright.in b/debian/copyright.in index 015d9ab..79526d3 100644 --- a/debian/copyright.in +++ b/debian/copyright.in @@ -1,9 +1,11 @@ This package was debianized by Grahame Bowland on -Tue, 17 Jun 2003 15:04:47 +0800. +Tue, 17 Jun 2003 15:04:47 +0800, maintained temporarily by Matt Johnston +, and was adopted by Gerrit Pape on +Sun, 16 May 2004 14:38:33 +0000. It was downloaded from http://matt.ucc.asn.au/dropbear/ -Upstream Author(s): Matt Johnston +Upstream Author: Matt Johnston Copyright: diff --git a/debian/dropbear.README.Debian b/debian/dropbear.README.Debian new file mode 100644 index 0000000..8cdac38 --- /dev/null +++ b/debian/dropbear.README.Debian @@ -0,0 +1,41 @@ +Dropbear for Debian +------------------- + +This package will attempt to listen on port 22. If the OpenSSH +package ("ssh") is installed, the file /etc/default/dropbear +will be set up so that the server does not start by default. + +You can run Dropbear concurrently with OpenSSH 'sshd' by +modifying /etc/default/dropbear so that "NO_START" is set to +"0" and changing the port number that Dropbear runs on. Follow +the instructions in the file. + +This package suggests you install the "ssh" package. This package +provides the "ssh" client program, as well as the "/usr/bin/scp" +binary you will need to be able to retrieve files from a server +running Dropbear via SCP. + +Replacing OpenSSH "sshd" with Dropbear +-------------------------------------- + +You will still want to have the "ssh" package installed, as it +provides the "ssh" and "scp" binaries. When you install this +package, it checks for existing OpenSSH host keys and if found, +converts them to the Dropbear format. + +If this appears to have worked, you should be able to change over +by following these steps: + +1. Stop the OpenSSH server + % /etc/init.d/ssh stop +2. Prevent the OpenSSH server from starting in the future + % touch /etc/ssh/sshd_not_to_be_run +3. Modify the Dropbear defaults file, set NO_START to 0 and + ensure DROPBEAR_PORT is set to 22. + % editor /etc/default/dropbear +4. Restart the Dropbear server. + % /etc/init.d/dropbear restart + +See the Dropbear homepage for more information: + http://matt.ucc.asn.au/dropbear/dropbear.html + diff --git a/debian/dropbear.conffiles b/debian/dropbear.conffiles new file mode 100644 index 0000000..6919006 --- /dev/null +++ b/debian/dropbear.conffiles @@ -0,0 +1,3 @@ +/etc/init.d/dropbear +/etc/dropbear/run +/etc/dropbear/log/run diff --git a/debian/dropbear.docs b/debian/dropbear.docs new file mode 100644 index 0000000..599d48c --- /dev/null +++ b/debian/dropbear.docs @@ -0,0 +1,3 @@ +README +TODO +debian/README.runit diff --git a/debian/dropbear.init b/debian/dropbear.init index 25eda9f..d9578db 100644 --- a/debian/dropbear.init +++ b/debian/dropbear.init @@ -1,15 +1,4 @@ -#! /bin/sh -# -# skeleton example file to build /etc/init.d/ scripts. -# This file should be used to construct scripts for /etc/init.d. -# -# Written by Miquel van Smoorenburg . -# Modified for Debian -# by Ian Murdock . -# -# Version: @(#)skeleton 1.9 26-Feb-2001 miquels@cistron.nl -# - +#!/bin/sh # # Do not configure this file. Edit /etc/default/dropbear instead! # @@ -22,54 +11,45 @@ DESC="Dropbear SSH server" DROPBEAR_PORT=22 DROPBEAR_EXTRA_ARGS= NO_START=0 -set -e -test -f /etc/default/dropbear && . /etc/default/dropbear - -if [ -n "$DROPBEAR_BANNER" ]; then - DROPBEAR_EXTRA_ARGS="$DROPBEAR_EXTRA_ARGS -b $DROPBEAR_BANNER" -fi -if [ -z "$DROPBEAR_RSAKEY" ]; then - DROPBEAR_RSAKEY="/etc/dropbear/dropbear_rsa_host_key" -fi - -if [ -z "$DROPBEAR_DSSKEY" ]; then - DROPBEAR_DSSKEY="/etc/dropbear/dropbear_dss_host_key" -fi +set -e -test "$NO_START" != "0" && exit 0 +test ! -r /etc/default/dropbear || . /etc/default/dropbear +test "$NO_START" = "0" || exit 0 +test -x "$DAEMON" || exit 0 +test ! -h /var/service/dropbear || exit 0 -test -x $DAEMON || exit 0 +test -z "$DROPBEAR_BANNER" || \ + DROPBEAR_EXTRA_ARGS="$DROPBEAR_EXTRA_ARGS -b $DROPBEAR_BANNER" +test -n "$DROPBEAR_RSAKEY" || \ + DROPBEAR_RSAKEY="/etc/dropbear/dropbear_rsa_host_key" +test -n "$DROPBEAR_DSSKEY" || \ + DROPBEAR_DSSKEY="/etc/dropbear/dropbear_dss_host_key" case "$1" in start) echo -n "Starting $DESC: " - start-stop-daemon --start --quiet --pidfile /var/run/$NAME.pid \ - --exec $DAEMON -- -d $DROPBEAR_DSSKEY -r $DROPBEAR_RSAKEY -p $DROPBEAR_PORT $DROPBEAR_EXTRA_ARGS + start-stop-daemon --start --quiet --pidfile /var/run/"$NAME".pid \ + --exec "$DAEMON" -- -d "$DROPBEAR_DSSKEY" -r "$DROPBEAR_RSAKEY" \ + -p "$DROPBEAR_PORT" $DROPBEAR_EXTRA_ARGS echo "$NAME." ;; stop) echo -n "Stopping $DESC: " - start-stop-daemon --stop --quiet --oknodo --pidfile /var/run/$NAME.pid + start-stop-daemon --stop --quiet --oknodo --pidfile /var/run/"$NAME".pid echo "$NAME." ;; restart|force-reload) - # - # If the "reload" option is implemented, move the "force-reload" - # option to the "reload" entry above. If not, "force-reload" is - # just the same as "restart". - # echo -n "Restarting $DESC: " - start-stop-daemon --stop --quiet --oknodo --pidfile \ - /var/run/$NAME.pid + start-stop-daemon --stop --quiet --oknodo --pidfile /var/run/"$NAME".pid sleep 1 - start-stop-daemon --start --quiet --pidfile /var/run/$NAME.pid \ - --exec $DAEMON -- -d $DROPBEAR_DSSKEY -r $DROPBEAR_RSAKEY -p $DROPBEAR_PORT $DROPBEAR_EXTRA_ARGS + start-stop-daemon --start --quiet --pidfile /var/run/"$NAME".pid \ + --exec "$DAEMON" -- -d "$DROPBEAR_DSSKEY" -r "$DROPBEAR_RSAKEY" \ + -p "$DROPBEAR_PORT" $DROPBEAR_EXTRA_ARGS echo "$NAME." ;; *) N=/etc/init.d/$NAME - # echo "Usage: $N {start|stop|restart|reload|force-reload}" >&2 echo "Usage: $N {start|stop|restart|force-reload}" >&2 exit 1 ;; diff --git a/debian/dropbear.postinst b/debian/dropbear.postinst new file mode 100644 index 0000000..749ffd1 --- /dev/null +++ b/debian/dropbear.postinst @@ -0,0 +1,68 @@ +#!/bin/sh +set -e + +test "$1" = 'configure' || exit 0 +test -n "$2" || chown log /etc/dropbear/log/main || true + +if test ! -e /etc/dropbear/dropbear_rsa_host_key; then + if test -f /etc/ssh/ssh_host_rsa_key; then + echo "Converting existing OpenSSH RSA host key to Dropbear format." + /usr/lib/dropbear/dropbearconvert openssh dropbear \ + /etc/ssh/ssh_host_rsa_key /etc/dropbear/dropbear_rsa_host_key + else + echo "Generating Dropbear RSA key. Please wait." + dropbearkey -t rsa -f /etc/dropbear/dropbear_rsa_host_key + fi +fi +if test ! -e /etc/dropbear/dropbear_dss_host_key; then + if test -f /etc/ssh/ssh_host_dsa_key; then + echo "Converting existing OpenSSH RSA host key to Dropbear format." + /usr/lib/dropbear/dropbearconvert openssh dropbear \ + /etc/ssh/ssh_host_dsa_key /etc/dropbear/dropbear_dss_host_key + else + echo "Generating Dropbear DSS key. Please wait." + dropbearkey -t dss -f /etc/dropbear/dropbear_dss_host_key + fi +fi +if test ! -s /etc/default/dropbear; then + # check whether OpenSSH seems to be installed. + if test -x /usr/sbin/sshd; then + cat <>/etc/default/dropbear <>/etc/default/dropbear </dev/null + if test -x /usr/sbin/invoke-rc.d; then + invoke-rc.d dropbear start + else + /etc/init.d/dropbear start + fi +fi diff --git a/debian/dropbear.postrm b/debian/dropbear.postrm new file mode 100644 index 0000000..d09dab0 --- /dev/null +++ b/debian/dropbear.postrm @@ -0,0 +1,12 @@ +#! /bin/sh +set -e + +test "$1" = 'purge' || exit 0 +if test -e /etc/dropbear; then + rm -f /etc/dropbear/dropbear_rsa_host_key + rm -f /etc/dropbear/dropbear_dss_host_key + rmdir --ignore-fail-on-non-empty /etc/dropbear +fi +update-rc.d dropbear remove >/dev/null +rm -f /etc/default/dropbear +rm -rf /etc/dropbear/supervise /etc/dropbear/log/supervise diff --git a/debian/dropbear.prerm b/debian/dropbear.prerm new file mode 100644 index 0000000..89bb5b6 --- /dev/null +++ b/debian/dropbear.prerm @@ -0,0 +1,11 @@ +#!/bin/sh +set -u + +test "$1" = 'remove' || test "$1" = 'deconfigure' || exit 0 +if test -x /etc/init.d/dropbear; then + if test -x /usr/sbin/invoke-rc.d; then + invoke-rc.d dropbear stop + else + /etc/init.d/dropbear stop + fi +fi diff --git a/debian/implicit b/debian/implicit new file mode 100644 index 0000000..d28b629 --- /dev/null +++ b/debian/implicit @@ -0,0 +1,79 @@ +# $Id: implicit,v 1.1 2004/06/16 05:08:32 matt Exp $ + +.PHONY: deb-checkdir deb-checkuid + +deb-checkdir: + @test -e debian/control || sh -cx '! : wrong directory' +deb-checkuid: + @test "`id -u`" -eq 0 || sh -cx '! : need root privileges' + +%.deb: %.deb-docs %.deb-DEBIAN + @rm -f $*.deb $*.deb-checkdir $*.deb-docs $*.deb-docs-base \ + $*.deb-docs-docs $*.deb-docs-examples $*.deb-DEBIAN \ + $*.deb-DEBIAN-dir $*.deb-DEBIAN-scripts $*.deb-DEBIAN-md5sums + +%.deb-checkdir: + @test -d debian/$* || sh -cx '! : directory debian/$* missing' + @test "`id -u`" -eq 0 || sh -cx '! : need root privileges' + +%.deb-docs-base: + : implicit + @rm -f debian/$*/usr/share/doc/$*/* || : + @install -d -m0755 debian/$*/usr/share/doc/$* + : debian/$*/usr/share/doc/$*/ + @sh -cx 'install -m0644 debian/copyright debian/$*/usr/share/doc/$*/' + @sh -cx 'install -m0644 debian/changelog \ + debian/$*/usr/share/doc/$*/changelog.Debian' + @test ! -r changelog || \ + sh -cx 'install -m0644 changelog debian/$*/usr/share/doc/$*/' + @test -r debian/$*/usr/share/doc/$*/changelog || \ + sh -cx 'mv debian/$*/usr/share/doc/$*/changelog.Debian \ + debian/$*/usr/share/doc/$*/changelog' + @gzip -9 debian/$*/usr/share/doc/$*/changelog* +%.deb-docs-docs: + @for i in `cat debian/$*.docs 2>/dev/null || :`; do \ + sh -cx "install -m0644 $$i debian/$*/usr/share/doc/$*/" || exit 1; \ + done + @test ! -r debian/$*.README.Debian || \ + sh -cx 'install -m0644 debian/$*.README.Debian \ + debian/$*/usr/share/doc/$*/README.Debian' + @if test -r debian/$*.NEWS.Debian; then \ + sh -cx 'install -m0644 debian/$*.NEWS.Debian \ + debian/$*/usr/share/doc/$*/NEWS.Debian && \ + gzip -9 debian/$*/usr/share/doc/$*/NEWS.Debian'; \ + fi +%.deb-docs-examples: + @rm -rf debian/$*/usr/share/doc/$*/examples + : debian/$*/usr/share/doc/$*/examples/ + @test ! -r debian/$*.examples || \ + install -d -m0755 debian/$*/usr/share/doc/$*/examples + @for i in `cat debian/$*.examples 2>/dev/null || :`; do \ + sh -cx "install -m0644 $$i debian/$*/usr/share/doc/$*/examples/" \ + || exit 1; \ + done +%.deb-docs: %.deb-checkdir %.deb-docs-base %.deb-docs-docs %.deb-docs-examples + : debian/$*/usr/share/doc/$*/ ok + +%.deb-DEBIAN-base: + @rm -rf debian/$*/DEBIAN + : debian/$*/DEBIAN/ + @install -d -m0755 debian/$*/DEBIAN + @for i in conffiles shlibs; do \ + test ! -r debian/$*.$$i || \ + sh -cx "install -m0644 debian/$*.$$i debian/$*/DEBIAN/$$i" \ + || exit 1; \ + done +%.deb-DEBIAN-scripts: + @for i in preinst prerm postinst postrm; do \ + test ! -r debian/$*.$$i || \ + sh -cx "install -m0755 debian/$*.$$i debian/$*/DEBIAN/$$i" \ + || exit 1; \ + done +%.deb-DEBIAN-md5sums: + : debian/$*/DEBIAN/md5sums + @rm -f debian/$*/DEBIAN/md5sums + @cd debian/$* && find * -path 'DEBIAN' -prune -o \ + -type f -exec md5sum {} >>DEBIAN/md5sums \; +%.deb-DEBIAN: %.deb-checkdir %.deb-DEBIAN-base %.deb-DEBIAN-scripts \ + %.deb-DEBIAN-md5sums + : debian/$*/DEBIAN/ ok diff --git a/debian/rules b/debian/rules index 4d73093..ee7b14a 100644 --- a/debian/rules +++ b/debian/rules @@ -1,134 +1,96 @@ #!/usr/bin/make -f -# Sample debian/rules that uses debhelper. -# GNU copyright 1997 to 1999 by Joey Hess. -# -# Modified to make a template file for a multi-binary package with separated -# build-arch and build-indep targets by Bill Allombert 2001 -# Uncomment this to turn on verbose mode. -#export DH_VERBOSE=1 +#export DH_OPTIONS +DEB_HOST_GNU_TYPE ?=$(shell dpkg-architecture -qDEB_HOST_GNU_TYPE) +DEB_BUILD_GNU_TYPE ?=$(shell dpkg-architecture -qDEB_BUILD_GNU_TYPE) -# This has to be exported to make some magic below work. -export DH_OPTIONS - -# These are used for cross-compiling and for saving the configure script -# from having to guess our platform (since we know it already) -DEB_HOST_GNU_TYPE ?= $(shell dpkg-architecture -qDEB_HOST_GNU_TYPE) -DEB_BUILD_GNU_TYPE ?= $(shell dpkg-architecture -qDEB_BUILD_GNU_TYPE) - - -CFLAGS = -Wall -g +STRIP =strip +ifneq (,$(findstring nostrip,$(DEB_BUILD_OPTIONS))) + STRIP =: nostrip +endif +CFLAGS =-Wall -g ifneq (,$(findstring noopt,$(DEB_BUILD_OPTIONS))) - CFLAGS += -O0 + CFLAGS +=-O0 else - CFLAGS += -O2 -endif -ifeq (,$(findstring nostrip,$(DEB_BUILD_OPTIONS))) - INSTALL_PROGRAM += -s + CFLAGS +=-O2 endif -config.status: configure - dh_testdir - # Add here commands to configure the package. - CFLAGS='-DSFTPSERVER_PATH="\"/usr/lib/sftp-server\""' ./configure --host=$(DEB_HOST_GNU_TYPE) --build=$(DEB_BUILD_GNU_TYPE) --prefix=/usr --mandir=\$${prefix}/share/man --infodir=\$${prefix}/share/info - - -#Architecture -build: build-arch #build-indep - -build-arch: build-arch-stamp -build-arch-stamp: config.status - - # Add here commands to compile the arch part of the package. - $(MAKE) CC=gcc LD=gcc - -build-indep: build-indep-stamp -build-indep-stamp: config.status - - # Add here commands to compile the indep part of the package. - #$(MAKE) doc - -clean: - dh_testdir - dh_testroot - rm -f build-arch-stamp build-indep-stamp config-stamp - - # Add here commands to clean up after the build process. - -$(MAKE) clean -ifneq "$(wildcard /usr/share/misc/config.sub)" "" - cp -f /usr/share/misc/config.sub config.sub -endif -ifneq "$(wildcard /usr/share/misc/config.guess)" "" - cp -f /usr/share/misc/config.guess config.guess +CC =gcc +ifneq (,$(findstring diet,$(DEB_BUILD_OPTIONS))) + CC =diet -v -Os gcc endif - - dh_clean - -install: install-indep install-arch -install-indep: - dh_testdir - dh_testroot - dh_clean -k -i - dh_installdirs -i - - # Add here commands to install the indep part of the package into - # debian/-doc. - #INSTALLDOC# - - dh_install -i - -install-arch: - dh_testdir - dh_testroot - dh_clean -k -a - dh_installdirs -a - dh_installdirs /etc/dropbear - - # Add here commands to install the arch part of the package into - # debian/tmp. - $(MAKE) install prefix=$(CURDIR)/debian/dropbear/usr - - dh_install -a -# Must not depend on anything. This is to be called by -# binary-arch/binary-multi -# in another 'make' thread. -binary-common: - cat $(CURDIR)/debian/copyright.in $(CURDIR)/LICENSE > $(CURDIR)/debian/copyright - dh_testdir - dh_testroot - dh_installchangelogs CHANGES - dh_installdocs - dh_installexamples -# dh_installmenu -# dh_installdebconf -# dh_installlogrotate -# dh_installemacsen -# dh_installpam -# dh_installmime - dh_installinit -# dh_installcron -# dh_installinfo - dh_installman - dh_link - dh_strip - dh_compress - dh_fixperms -# dh_perl -# dh_python - dh_makeshlibs - dh_installdeb - dh_gencontrol - dh_md5sums - dh_builddeb -# Build architecture independant packages using the common target. -binary-indep: build-indep install-indep - $(MAKE) -f debian/rules DH_OPTIONS=-i binary-common - -# Build architecture dependant packages using the common target. -binary-arch: build-arch install-arch - $(MAKE) -f debian/rules DH_OPTIONS=-a binary-common - -binary: binary-arch #binary-indep -.PHONY: build clean binary-indep binary-arch binary install install-indep install-arch +DIR=`pwd`/debian/dropbear + +patch: deb-checkdir patch-stamp +patch-stamp: +# no patches for now +# for i in debian/diff/*.diff; do patch -p0 <$$i || exit 1; done + touch patch-stamp + +config.status: patch-stamp configure + CFLAGS="$(CFLAGS)"' -DSFTPSERVER_PATH="\"/usr/lib/sftp-server\""' \ + ./configure --host="$(DEB_HOST_GNU_TYPE)" \ + --build="$(DEB_BUILD_GNU_TYPE)" --prefix=/usr \ + --mandir=\$${prefix}/share/man --infodir=\$${prefix}/share/info + +build: deb-checkdir build-stamp +build-stamp: config.status + $(MAKE) CC="$(CC)" LD="$(CC)" + touch build-stamp + +clean: deb-checkdir deb-checkuid + -$(MAKE) distclean +# test ! -e patch-stamp || \ +# for i in debian/diff/*.diff; do patch -p0 -R <$$i; done + rm -f patch-stamp build-stamp config.log config.status + rm -rf "$(DIR)" + rm -f debian/files debian/substvars debian/copyright changelog + +install: deb-checkdir deb-checkuid build-stamp + rm -rf "$(DIR)" + install -d -m0755 "$(DIR)"/etc/dropbear + # programs + install -d -m0755 "$(DIR)"/usr/sbin + install -m0755 dropbear "$(DIR)"/usr/sbin/dropbear + install -d -m0755 "$(DIR)"/usr/bin + install -m0755 dropbearkey "$(DIR)"/usr/bin/dropbearkey + install -d -m0755 "$(DIR)"/usr/lib/dropbear + install -m0755 dropbearconvert \ + "$(DIR)"/usr/lib/dropbear/dropbearconvert + $(STRIP) -R .comment -R .note "$(DIR)"/usr/sbin/* \ + "$(DIR)"/usr/bin/* "$(DIR)"/usr/lib/dropbear/* + # init and run scripts + install -d -m0755 "$(DIR)"/etc/init.d + install -m0755 debian/dropbear.init "$(DIR)"/etc/init.d/dropbear + install -m0755 debian/service/run "$(DIR)"/etc/dropbear/run + install -d -m0755 "$(DIR)"/etc/dropbear/log + install -m0755 debian/service/log "$(DIR)"/etc/dropbear/log/run + ln -s /var/log/dropbear "$(DIR)"/etc/dropbear/log/main + ln -s /var/run/dropbear "$(DIR)"/etc/dropbear/supervise + ln -s /var/run/dropbear.log "$(DIR)"/etc/dropbear/log/supervise + # man pages + install -d -m0755 "$(DIR)"/usr/share/man/man8 + for i in dropbear.8 dropbearkey.8; do \ + install -m644 $$i "$(DIR)"/usr/share/man/man8/ || exit 1; \ + done + gzip -9 "$(DIR)"/usr/share/man/man8/*.8 + # copyright, changelog + cat debian/copyright.in LICENSE >debian/copyright + ln -s CHANGES changelog + +binary-indep: + +binary-arch: install dropbear.deb + test "$(CC)" != 'gcc' || \ + dpkg-shlibdeps "$(DIR)"/usr/sbin/* "$(DIR)"/usr/bin/* \ + "$(DIR)"/usr/lib/dropbear/* + dpkg-gencontrol -isp -pdropbear -P"$(DIR)" + dpkg -b "$(DIR)" .. + +binary: binary-arch binary-indep + +.PHONY: patch build clean install binary-indep binary-arch binary + +include debian/implicit diff --git a/debian/service/log b/debian/service/log new file mode 100644 index 0000000..2ffb13d --- /dev/null +++ b/debian/service/log @@ -0,0 +1,2 @@ +#!/bin/sh +exec chpst -udropbearlog svlogd -tt ./main diff --git a/debian/service/run b/debian/service/run new file mode 100644 index 0000000..f208085 --- /dev/null +++ b/debian/service/run @@ -0,0 +1,3 @@ +#!/bin/sh +exec 2>&1 +exec dropbear -d ./dropbear_dss_host_key -r ./dropbear_rsa_host_key -F -E -p 22 diff --git a/dropbearkey.c b/dropbearkey.c index eac0823..5d4475b 100644 --- a/dropbearkey.c +++ b/dropbearkey.c @@ -45,7 +45,6 @@ * */ #include "includes.h" -#include "runopts.h" #include "signkey.h" #include "buffer.h" #include "dbutil.h" diff --git a/dss.c b/dss.c index 74b92c7..9b56f10 100644 --- a/dss.c +++ b/dss.c @@ -171,6 +171,8 @@ int buf_dss_verify(buffer* buf, dss_key *key, const unsigned char* data, TRACE(("enter buf_dss_verify")); assert(key != NULL); + m_mp_init_multi(&val1, &val2, &val3, &val4, NULL); + /* get blob, check length */ string = buf_getstring(buf, &stringlen); if (stringlen != 2*SHA1_HASH_SIZE) { @@ -182,8 +184,6 @@ int buf_dss_verify(buffer* buf, dss_key *key, const unsigned char* data, sha1_process(&hs, data, len); sha1_done(&hs, msghash); - m_mp_init_multi(&val1, &val2, &val3, &val4, NULL); - /* create the signature - s' and r' are the received signatures in buf */ /* w = (s')-1 mod q */ /* let val1 = s' */ diff --git a/gendss.c b/gendss.c index 3e9db09..5a440a1 100644 --- a/gendss.c +++ b/gendss.c @@ -31,7 +31,6 @@ #include "gendss.h" #include "dss.h" -#define PSIZE 128 /* 1024 bit*/ #define QSIZE 20 /* 160 bit */ #ifdef DROPBEAR_DSS diff --git a/includes.h b/includes.h index 52c48ed..b37422b 100644 --- a/includes.h +++ b/includes.h @@ -38,7 +38,6 @@ #include #include #include -#include #include #include @@ -56,6 +55,7 @@ #include #include #include +#include #include @@ -111,10 +111,6 @@ #include #endif -#ifdef HAVE_SYS_DIRENT_H -#include -#endif - #include "libtomcrypt/mycrypt_custom.h" #include "libtommath/tommath.h" diff --git a/options.h b/options.h index f0831b9..c687a8c 100644 --- a/options.h +++ b/options.h @@ -47,6 +47,11 @@ * if you want to use this) */ /*#define NO_FAST_EXPTMOD*/ +/* Set this if you want to use the DROPBEAR_SMALL_CODE option. This can save +several kB in binary size, however will make the symmetrical ciphers (AES, DES +etc) slower (perhaps by 50%). Recommended for most small systems. */ +#define DROPBEAR_SMALL_CODE + /* Enable X11 Forwarding - server only */ #define ENABLE_X11FWD @@ -175,7 +180,7 @@ *******************************************************************/ #ifndef DROPBEAR_VERSION -#define DROPBEAR_VERSION "0.41-and-client" +#define DROPBEAR_VERSION "0.45-beta1" #endif #define LOCAL_IDENT "SSH-2.0-dropbear_" DROPBEAR_VERSION diff --git a/packet.c b/packet.c index 997bc6f..5e8e14d 100644 --- a/packet.c +++ b/packet.c @@ -50,7 +50,7 @@ static void buf_compress(buffer * dest, buffer * src, unsigned int len); void write_packet() { int len, written; - buffer * writebuf; + buffer * writebuf = NULL; TRACE(("enter write_packet")); assert(!isempty(&ses.writequeue)); @@ -80,6 +80,7 @@ void write_packet() { /* We've finished with the packet, free it */ dequeue(&ses.writequeue); buf_free(writebuf); + writebuf = NULL; } else { /* More packet left to write, leave it in the queue for later */ buf_incrpos(writebuf, written); @@ -503,6 +504,7 @@ void encrypt_packet() { /* clearwritebuf is finished with */ buf_free(clearwritebuf); + clearwritebuf = NULL; /* enqueue the packet for sending */ buf_setpos(writebuf, 0); diff --git a/random.c b/random.c index 725b29c..65a9c64 100644 --- a/random.c +++ b/random.c @@ -60,7 +60,7 @@ static void readrand(unsigned char* buf, unsigned int buflen) { #ifdef DROPBEAR_DEV_URANDOM readfd = open(DEV_URANDOM, O_RDONLY); - if (!readfd) { + if (readfd < 0) { dropbear_exit("couldn't open random device"); } #endif @@ -71,7 +71,8 @@ static void readrand(unsigned char* buf, unsigned int buflen) { strlcpy(egdsock.sun_path, DROPBEAR_EGD_SOCKET, sizeof(egdsock.sun_path)); - if ((readfd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) { + readfd = socket(PF_UNIX, SOCK_STREAM, 0); + if (readfd < 0) { dropbear_exit("couldn't open random device"); } /* todo - try various common locations */ diff --git a/rsa.c b/rsa.c index 2d63c02..1130e93 100644 --- a/rsa.c +++ b/rsa.c @@ -244,8 +244,11 @@ int buf_rsa_verify(buffer * buf, rsa_key *key, const unsigned char* data, } out: - mp_clear_multi(rsa_em, &rsa_mdash, &rsa_s, NULL); - m_free(rsa_em); + if (rsa_em) { + mp_clear(rsa_em); + m_free(rsa_em); + } + mp_clear_multi(&rsa_mdash, &rsa_s, NULL); TRACE(("leave buf_rsa_verify: ret %d", ret)); return ret; @@ -260,15 +263,16 @@ void buf_put_rsa_sign(buffer* buf, rsa_key *key, const unsigned char* data, unsigned int nsize, ssize; unsigned int i; mp_int rsa_s; - mp_int *rsa_em; + mp_int *rsa_em = NULL; TRACE(("enter buf_put_rsa_sign")); assert(key != NULL); rsa_em = rsa_pad_em(key, data, len); - /* the actual signing of the padded data */ m_mp_init(&rsa_s); + + /* the actual signing of the padded data */ /* s = em^d mod n */ if (mp_exptmod(rsa_em, key->d, key->n, &rsa_s) != MP_OKAY) { dropbear_exit("rsa error"); @@ -322,10 +326,10 @@ static mp_int * rsa_pad_em(rsa_key * key, {0x00, 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x0e, 0x03, 0x02, 0x1a, 0x05, 0x00, 0x04, 0x14}; #define RSA_ASN1_MAGIC_LEN 16 - buffer * rsa_EM; + buffer * rsa_EM = NULL; hash_state hs; unsigned int nsize; - mp_int * rsa_em; + mp_int * rsa_em = NULL; assert(key != NULL); assert(data != NULL); diff --git a/signkey.c b/signkey.c index 3efcc2b..7ae08b8 100644 --- a/signkey.c +++ b/signkey.c @@ -194,7 +194,7 @@ void buf_put_pub_key(buffer* buf, sign_key *key, int type) { buffer *pubkeys; TRACE(("enter buf_put_pub_key")); - pubkeys = buf_new(1000); + pubkeys = buf_new(MAX_PUBKEY_SIZE); #ifdef DROPBEAR_DSS if (type == DROPBEAR_SIGNKEY_DSS) { @@ -356,7 +356,7 @@ void buf_put_sign(buffer* buf, sign_key *key, int type, buffer *sigblob; - sigblob = buf_new(1000); + sigblob = buf_new(MAX_PUBKEY_SIZE); #ifdef DROPBEAR_DSS if (type == DROPBEAR_SIGNKEY_DSS) { diff --git a/svr-agentfwd.c b/svr-agentfwd.c index b588586..4e9aa56 100644 --- a/svr-agentfwd.c +++ b/svr-agentfwd.c @@ -64,7 +64,7 @@ int agentreq(struct ChanSess * chansess) { /* create the unix socket dir and file */ if (bindagent(fd, chansess) == DROPBEAR_FAILURE) { - return DROPBEAR_FAILURE; + goto fail; } /* listen */ @@ -146,7 +146,7 @@ void agentcleanup(struct ChanSess * chansess) { chansess->agentlistener = NULL; } - if (chansess->agentfile && chansess->agentdir) { + if (chansess->agentfile != NULL && chansess->agentdir != NULL) { /* Remove the dir as the user. That way they can't cause problems except * for themselves */ diff --git a/svr-auth.c b/svr-auth.c index 314171f..ae7ead2 100644 --- a/svr-auth.c +++ b/svr-auth.c @@ -91,7 +91,7 @@ static void send_msg_userauth_banner() { * checking, and handle success or failure */ void recv_msg_userauth_request() { - unsigned char *username, *servicename, *methodname; + unsigned char *username = NULL, *servicename = NULL, *methodname = NULL; unsigned int userlen, servicelen, methodlen; TRACE(("enter recv_msg_userauth_request")); @@ -275,7 +275,7 @@ goodshell: * failures */ void send_msg_userauth_failure(int partial, int incrfail) { - buffer *typebuf; + buffer *typebuf = NULL; TRACE(("enter send_msg_userauth_failure")); diff --git a/svr-authpasswd.c b/svr-authpasswd.c index 7c6c7b7..6f7c909 100644 --- a/svr-authpasswd.c +++ b/svr-authpasswd.c @@ -37,14 +37,14 @@ void svr_auth_password() { #ifdef HAVE_SHADOW_H - struct spwd *spasswd; + struct spwd *spasswd = NULL; #endif - char * passwdcrypt; /* the crypt from /etc/passwd or /etc/shadow */ - char * testcrypt; /* crypt generated from the user's password sent */ + char * passwdcrypt = NULL; /* the crypt from /etc/passwd or /etc/shadow */ + char * testcrypt = NULL; /* crypt generated from the user's password sent */ unsigned char * password; unsigned int passwordlen; - unsigned char changepw; + unsigned int changepw; passwdcrypt = ses.authstate.pw->pw_passwd; #ifdef HAVE_SHADOW_H diff --git a/svr-authpubkey.c b/svr-authpubkey.c index 9205078..14b5a78 100644 --- a/svr-authpubkey.c +++ b/svr-authpubkey.c @@ -53,7 +53,7 @@ void svr_auth_pubkey() { unsigned char testkey; /* whether we're just checking if a key is usable */ unsigned char* algo = NULL; /* pubkey algo */ unsigned int algolen; - unsigned char* keyblob; + unsigned char* keyblob = NULL; unsigned int keybloblen; buffer * signbuf = NULL; sign_key * key = NULL; diff --git a/svr-chansession.c b/svr-chansession.c index a0e877c..01612f4 100644 --- a/svr-chansession.c +++ b/svr-chansession.c @@ -273,7 +273,7 @@ static void closechansess(struct Channel *channel) { * or x11/authagent forwarding. These are passed to appropriate handlers */ static void chansessionrequest(struct Channel *channel) { - unsigned char * type; + unsigned char * type = NULL; unsigned int typelen; unsigned char wantreply; int ret = 1; @@ -320,7 +320,7 @@ static void chansessionrequest(struct Channel *channel) { out: if (wantreply) { - if (ret == 0) { + if (ret == DROPBEAR_SUCCESS) { send_msg_channel_success(channel); } else { send_msg_channel_failure(channel); @@ -336,7 +336,7 @@ out: static int sessionsignal(struct ChanSess *chansess) { int sig = 0; - unsigned char* signame; + unsigned char* signame = NULL; int i; if (chansess->pid == 0) { @@ -528,11 +528,14 @@ static int sessioncommand(struct Channel *channel, struct ChanSess *chansess, int iscmd, int issubsys) { unsigned int cmdlen; + int ret; TRACE(("enter sessioncommand")); if (chansess->cmd != NULL) { - /* TODO - send error - multiple commands? */ + /* Note that only one command can _succeed_. The client might try + * one command (which fails), then try another. Ie fallback + * from sftp to scp */ return DROPBEAR_FAILURE; } @@ -541,6 +544,7 @@ static int sessioncommand(struct Channel *channel, struct ChanSess *chansess, chansess->cmd = buf_getstring(ses.payload, &cmdlen); if (cmdlen > MAX_CMD_LEN) { + m_free(chansess->cmd); /* TODO - send error - too long ? */ return DROPBEAR_FAILURE; } @@ -552,6 +556,7 @@ static int sessioncommand(struct Channel *channel, struct ChanSess *chansess, } else #endif { + m_free(chansess->cmd); return DROPBEAR_FAILURE; } } @@ -559,11 +564,16 @@ static int sessioncommand(struct Channel *channel, struct ChanSess *chansess, if (chansess->term == NULL) { /* no pty */ - return noptycommand(channel, chansess); + ret = noptycommand(channel, chansess); } else { /* want pty */ - return ptycommand(channel, chansess); + ret = ptycommand(channel, chansess); + } + + if (ret == DROPBEAR_FAILURE) { + m_free(chansess->cmd); } + return ret; } /* Execute a command and set up redirection of stdin/stdout/stderr without a @@ -650,7 +660,7 @@ static int noptycommand(struct Channel *channel, struct ChanSess *chansess) { static int ptycommand(struct Channel *channel, struct ChanSess *chansess) { pid_t pid; - struct logininfo *li; + struct logininfo *li = NULL; #ifdef DO_MOTD buffer * motdbuf = NULL; int len; @@ -778,8 +788,8 @@ static void addchildpid(struct ChanSess *chansess, pid_t pid) { static void execchild(struct ChanSess *chansess) { char *argv[4]; - char * usershell; - char * baseshell; + char * usershell = NULL; + char * baseshell = NULL; unsigned int i; /* wipe the hostkey */ @@ -863,6 +873,11 @@ static void execchild(struct ChanSess *chansess) { agentset(chansess); #endif + /* Re-enable SIGPIPE for the executed process */ + if (signal(SIGPIPE, SIG_DFL) == SIG_ERR) { + dropbear_exit("signal() error"); + } + baseshell = basename(usershell); if (chansess->cmd != NULL) { @@ -921,7 +936,7 @@ void svr_chansessinitialise() { /* add a new environment variable, allocating space for the entry */ void addnewvar(const char* param, const char* var) { - char* newvar; + char* newvar = NULL; int plen, vlen; plen = strlen(param); diff --git a/svr-tcpfwd.c b/svr-tcpfwd.c index 0eccae4..0f22a23 100644 --- a/svr-tcpfwd.c +++ b/svr-tcpfwd.c @@ -208,7 +208,7 @@ static int newtcpdirect(struct Channel * channel) { char portstring[NI_MAXSERV]; int sock; int len; - int ret = DROPBEAR_FAILURE; + int err = SSH_OPEN_ADMINISTRATIVELY_PROHIBITED; if (opts.nolocaltcp) { TRACE(("leave newtcpdirect: local tcp forwarding disabled")); @@ -240,6 +240,7 @@ static int newtcpdirect(struct Channel * channel) { snprintf(portstring, sizeof(portstring), "%d", destport); sock = connect_remote(desthost, portstring, 1, NULL); if (sock < 0) { + err = SSH_OPEN_CONNECT_FAILED; TRACE(("leave newtcpdirect: sock failed")); goto out; } @@ -253,13 +254,13 @@ static int newtcpdirect(struct Channel * channel) { channel->infd = sock; channel->initconn = 1; - ret = DROPBEAR_SUCCESS; + err = SSH_OPEN_IN_PROGRESS; out: m_free(desthost); m_free(orighost); - TRACE(("leave newtcpdirect: ret %d", ret)); - return ret; + TRACE(("leave newtcpdirect: err %d", err)); + return err; } #endif diff --git a/svr-x11fwd.c b/svr-x11fwd.c index 0f4f71e..a8d1cd5 100644 --- a/svr-x11fwd.c +++ b/svr-x11fwd.c @@ -131,7 +131,7 @@ static void x11accept(struct Listener* listener, int sock) { void x11setauth(struct ChanSess *chansess) { char display[20]; /* space for "localhost:12345.123" */ - FILE * authprog; + FILE * authprog = NULL; int val; if (chansess->x11listener == NULL) { @@ -187,7 +187,7 @@ static const struct ChanType chan_x11 = { static int send_msg_channel_open_x11(int fd, struct sockaddr_in* addr) { - char* ipstring; + char* ipstring = NULL; if (send_msg_channel_open_init(fd, &chan_x11) == DROPBEAR_SUCCESS) { ipstring = inet_ntoa(addr->sin_addr); -- cgit v1.2.3 From 4a52217ed410dfbfdceee4688688d756fa0d097e Mon Sep 17 00:00:00 2001 From: Matt Johnston Date: Tue, 17 Aug 2004 10:20:20 +0000 Subject: default initialisers for mp_ints --HG-- extra : convert_revision : af69bacb50a31523e383e8f73844d04681f9e394 --- cli-kex.c | 13 ++++++++++--- common-kex.c | 9 +++++---- dss.c | 16 +++++++++++----- gendss.c | 11 ++++++++--- genrsa.c | 6 ++++-- options.h | 2 +- rsa.c | 5 +++-- svr-kex.c | 6 ++++-- 8 files changed, 46 insertions(+), 22 deletions(-) (limited to 'dss.c') diff --git a/cli-kex.c b/cli-kex.c index ca29e7d..90c8d29 100644 --- a/cli-kex.c +++ b/cli-kex.c @@ -45,8 +45,8 @@ void send_msg_kexdh_init() { cli_ses.dh_e = (mp_int*)m_malloc(sizeof(mp_int)); cli_ses.dh_x = (mp_int*)m_malloc(sizeof(mp_int)); - m_mp_init_multi(cli_ses.dh_e, cli_ses.dh_x, NULL); + gen_kexdh_vals(cli_ses.dh_e, cli_ses.dh_x); CHECKCLEARTOWRITE(); @@ -59,13 +59,18 @@ void send_msg_kexdh_init() { /* Handle a diffie-hellman key exchange reply. */ void recv_msg_kexdh_reply() { - mp_int dh_f; + DEF_MP_INT(dh_f); sign_key *hostkey = NULL; unsigned int type, keybloblen; unsigned char* keyblob = NULL; TRACE(("enter recv_msg_kexdh_reply")); + + if (cli_ses.kex_state != KEXDH_INIT_SENT) { + dropbear_exit("Received out-of-order kexdhreply"); + } + m_mp_init(&dh_f); type = ses.newkeys->algo_hostkey; TRACE(("type is %d", type)); @@ -83,7 +88,6 @@ void recv_msg_kexdh_reply() { dropbear_exit("Bad KEX packet"); } - m_mp_init(&dh_f); if (buf_getmpint(ses.payload, &dh_f) != DROPBEAR_SUCCESS) { TRACE(("failed getting mpint")); dropbear_exit("Bad KEX packet"); @@ -91,6 +95,9 @@ void recv_msg_kexdh_reply() { kexdh_comb_key(cli_ses.dh_e, cli_ses.dh_x, &dh_f, hostkey); mp_clear(&dh_f); + mp_clear_multi(cli_ses.dh_e, cli_ses.dh_x, NULL); + m_free(cli_ses.dh_e); + m_free(cli_ses.dh_x); if (buf_verify(ses.payload, hostkey, ses.hash, SHA1_HASH_SIZE) != DROPBEAR_SUCCESS) { diff --git a/common-kex.c b/common-kex.c index f8bfe97..7bb0c82 100644 --- a/common-kex.c +++ b/common-kex.c @@ -464,17 +464,18 @@ void recv_msg_kexinit() { /* Initialises and generate one side of the diffie-hellman key exchange values. * See the ietf-secsh-transport draft, section 6, for details */ -/* dh_pub and dh_priv will be initialised by this function, and should be - * mp_clear()ed after finished */ +/* dh_pub and dh_priv MUST be already initialised */ void gen_kexdh_vals(mp_int *dh_pub, mp_int *dh_priv) { - mp_int dh_p, dh_q, dh_g; + DEF_MP_INT(dh_p); + DEF_MP_INT(dh_q); + DEF_MP_INT(dh_g); unsigned char randbuf[DH_P_LEN]; int dh_q_len; TRACE(("enter send_msg_kexdh_reply")); - m_mp_init_multi(&dh_g, &dh_p, &dh_q, dh_priv, dh_pub, NULL); + m_mp_init_multi(&dh_g, &dh_p, &dh_q, NULL); /* read the prime and generator*/ if (mp_read_unsigned_bin(&dh_p, (unsigned char*)dh_p_val, DH_P_LEN) diff --git a/dss.c b/dss.c index 9b56f10..5bd358a 100644 --- a/dss.c +++ b/dss.c @@ -164,7 +164,10 @@ int buf_dss_verify(buffer* buf, dss_key *key, const unsigned char* data, unsigned char msghash[SHA1_HASH_SIZE]; hash_state hs; int ret = DROPBEAR_FAILURE; - mp_int val1, val2, val3, val4; + DEF_MP_INT(val1); + DEF_MP_INT(val2); + DEF_MP_INT(val3); + DEF_MP_INT(val4); char * string = NULL; int stringlen; @@ -281,13 +284,16 @@ void buf_put_dss_sign(buffer* buf, dss_key *key, const unsigned char* data, unsigned char privkeyhash[SHA512_HASH_SIZE]; unsigned char *privkeytmp; unsigned char proto_k[SHA512_HASH_SIZE]; - mp_int dss_protok; + DEF_MP_INT(dss_protok); #else unsigned char kbuf[SHA1_HASH_SIZE]; #endif - mp_int dss_k, dss_m; - mp_int dss_temp1, dss_temp2; - mp_int dss_r, dss_s; + DEF_MP_INT(dss_k); + DEF_MP_INT(dss_m); + DEF_MP_INT(dss_temp1); + DEF_MP_INT(dss_temp2); + DEF_MP_INT(dss_r); + DEF_MP_INT(dss_s); hash_state hs; TRACE(("enter buf_put_dss_sign")); diff --git a/gendss.c b/gendss.c index 5a440a1..e1b502d 100644 --- a/gendss.c +++ b/gendss.c @@ -89,7 +89,10 @@ static void getq(dss_key *key) { static void getp(dss_key *key, unsigned int size) { - mp_int tempX, tempC, tempP, temp2q; + DEF_MP_INT(tempX); + DEF_MP_INT(tempC); + DEF_MP_INT(tempP); + DEF_MP_INT(temp2q); int result; unsigned char *buf; @@ -148,7 +151,9 @@ static void getp(dss_key *key, unsigned int size) { static void getg(dss_key * key) { char printbuf[1000]; - mp_int div, h, val; + DEF_MP_INT(div); + DEF_MP_INT(h); + DEF_MP_INT(val); m_mp_init_multi(&div, &h, &val, NULL); @@ -185,7 +190,7 @@ static void getg(dss_key * key) { static void getx(dss_key *key) { - mp_int val; + DEF_MP_INT(val); char buf[QSIZE]; m_mp_init(&val); diff --git a/genrsa.c b/genrsa.c index 330ebf2..5711519 100644 --- a/genrsa.c +++ b/genrsa.c @@ -40,7 +40,9 @@ static void getrsaprime(mp_int* prime, mp_int *primeminus, rsa_key * gen_rsa_priv_key(unsigned int size) { rsa_key * key; - mp_int pminus, qminus, lcm; + DEF_MP_INT(pminus); + DEF_MP_INT(qminus); + DEF_MP_INT(lcm); key = (rsa_key*)m_malloc(sizeof(rsa_key)); @@ -95,7 +97,7 @@ static void getrsaprime(mp_int* prime, mp_int *primeminus, mp_int* rsa_e, unsigned int size) { unsigned char *buf; - mp_int temp_gcd; + DEF_MP_INT(temp_gcd); buf = (unsigned char*)m_malloc(size+1); diff --git a/options.h b/options.h index 2887c59..9e7d1ee 100644 --- a/options.h +++ b/options.h @@ -139,7 +139,7 @@ etc) slower (perhaps by 50%). Recommended for most small systems. */ #define ENABLE_CLI_PUBKEY_AUTH /* Random device to use - you must specify _one only_. - * DEV_RANDOM is recommended on hosts with a good /dev/urandom, otherwise use + * DEV_URANDOM is recommended on hosts with a good /dev/urandom, otherwise use * PRNGD and run prngd, specifying the socket. This device must be able to * produce a large amount of random data, so using /dev/random or Entropy * Gathering Daemon (egd) may result in halting, as it waits for more random diff --git a/rsa.c b/rsa.c index 1130e93..7e891e0 100644 --- a/rsa.c +++ b/rsa.c @@ -201,7 +201,8 @@ int buf_rsa_verify(buffer * buf, rsa_key *key, const unsigned char* data, unsigned int len) { unsigned int slen; - mp_int rsa_s, rsa_mdash; + DEF_MP_INT(rsa_s); + DEF_MP_INT(rsa_mdash); mp_int *rsa_em = NULL; int ret = DROPBEAR_FAILURE; @@ -262,7 +263,7 @@ void buf_put_rsa_sign(buffer* buf, rsa_key *key, const unsigned char* data, unsigned int nsize, ssize; unsigned int i; - mp_int rsa_s; + DEF_MP_INT(rsa_s); mp_int *rsa_em = NULL; TRACE(("enter buf_put_rsa_sign")); diff --git a/svr-kex.c b/svr-kex.c index 816779c..47c540e 100644 --- a/svr-kex.c +++ b/svr-kex.c @@ -44,7 +44,7 @@ static void send_msg_kexdh_reply(mp_int *dh_e); * that function, then brings the new keys into use */ void recv_msg_kexdh_init() { - mp_int dh_e; + DEF_MP_INT(dh_e); TRACE(("enter recv_msg_kexdh_init")); if (!ses.kexstate.recvkexinit) { @@ -71,9 +71,11 @@ void recv_msg_kexdh_init() { * See the ietf-secsh-transport draft, section 6, for details */ static void send_msg_kexdh_reply(mp_int *dh_e) { - mp_int dh_y, dh_f; + DEF_MP_INT(dh_y); + DEF_MP_INT(dh_f); TRACE(("enter send_msg_kexdh_reply")); + m_mp_init_multi(&dh_y, &dh_f, NULL); gen_kexdh_vals(&dh_f, &dh_y); -- cgit v1.2.3 From 34445aa81960742691ef269b18c8db272b8449cc Mon Sep 17 00:00:00 2001 From: Matt Johnston Date: Mon, 20 Dec 2004 14:24:57 +0000 Subject: Cleaning out various dead wood found with -dead_strip bignum.c: mptobytes now resides in dss.c loginrec.c: remove lastlog code since it isn't used. dbutil.c: removed obselete usingsyslog variable channel.h: client channel type only defined for client compile common-algo.c: s/rijndael/aes/ --HG-- extra : convert_revision : 411ea4e70506ecb0202376f94bcf2d330603d042 --- bignum.c | 19 -------- bignum.h | 1 - channel.h | 2 + common-algo.c | 4 +- dbutil.c | 1 - dss.c | 19 ++++++++ loginrec.c | 150 +--------------------------------------------------------- loginrec.h | 9 ---- 8 files changed, 25 insertions(+), 180 deletions(-) (limited to 'dss.c') diff --git a/bignum.c b/bignum.c index 4552d30..97901fb 100644 --- a/bignum.c +++ b/bignum.c @@ -52,25 +52,6 @@ void m_mp_init_multi(mp_int *mp, ...) va_end(args); } -/* convert an unsigned mp into an array of bytes, malloced. - * This array must be freed after use, len contains the length of the array, - * if len != NULL */ -unsigned char* mptobytes(mp_int *mp, int *len) { - - unsigned char* ret; - int size; - - size = mp_unsigned_bin_size(mp); - ret = m_malloc(size); - if (mp_to_unsigned_bin(mp, ret) != MP_OKAY) { - dropbear_exit("mem alloc error"); - } - if (len != NULL) { - *len = size; - } - return ret; -} - void bytestomp(mp_int *mp, unsigned char* bytes, unsigned int len) { if (mp_read_unsigned_bin(mp, bytes, len) != MP_OKAY) { diff --git a/bignum.h b/bignum.h index 27f5e77..2a807af 100644 --- a/bignum.h +++ b/bignum.h @@ -29,7 +29,6 @@ void m_mp_init(mp_int *mp); void m_mp_init_multi(mp_int *mp, ...); -unsigned char* mptobytes(mp_int *mp, int *len); void bytestomp(mp_int *mp, unsigned char* bytes, unsigned int len); void sha1_process_mp(hash_state *hs, mp_int *mp); diff --git a/channel.h b/channel.h index 535960e..be6dd60 100644 --- a/channel.h +++ b/channel.h @@ -118,7 +118,9 @@ void recv_msg_channel_eof(); void common_recv_msg_channel_data(struct Channel *channel, int fd, circbuffer * buf); +#ifdef DROPBEAR_CLIENT const struct ChanType clichansess; +#endif #ifdef USING_LISTENERS int send_msg_channel_open_init(int fd, const struct ChanType *type); diff --git a/common-algo.c b/common-algo.c index e1d22e1..22cdc70 100644 --- a/common-algo.c +++ b/common-algo.c @@ -34,7 +34,7 @@ #ifdef DROPBEAR_AES128_CBC const struct dropbear_cipher dropbear_aes128 = - {&rijndael_desc, 16, 16}; + {&aes_desc, 16, 16}; #endif #ifdef DROPBEAR_BLOWFISH_CBC const struct dropbear_cipher dropbear_blowfish = @@ -127,7 +127,7 @@ void crypto_init() { const struct _cipher_descriptor *regciphers[] = { #ifdef DROPBEAR_AES128_CBC - &rijndael_desc, + &aes_desc, #endif #ifdef DROPBEAR_BLOWFISH_CBC &blowfish_desc, diff --git a/dbutil.c b/dbutil.c index cc7fcf8..cf57118 100644 --- a/dbutil.c +++ b/dbutil.c @@ -70,7 +70,6 @@ void (*_dropbear_log)(int priority, const char* format, va_list param) int debug_trace = 0; #endif -int usingsyslog = 0; /* set by runopts, but required externally to sessions */ #ifndef DISABLE_SYSLOG void startsyslog() { diff --git a/dss.c b/dss.c index 5bd358a..0cb437c 100644 --- a/dss.c +++ b/dss.c @@ -261,6 +261,25 @@ out: } #endif /* DROPBEAR_SIGNKEY_VERIFY */ +/* convert an unsigned mp into an array of bytes, malloced. + * This array must be freed after use, len contains the length of the array, + * if len != NULL */ +static unsigned char* mptobytes(mp_int *mp, int *len) { + + unsigned char* ret; + int size; + + size = mp_unsigned_bin_size(mp); + ret = m_malloc(size); + if (mp_to_unsigned_bin(mp, ret) != MP_OKAY) { + dropbear_exit("mem alloc error"); + } + if (len != NULL) { + *len = size; + } + return ret; +} + /* Sign the data presented with key, writing the signature contents * to the buffer * diff --git a/loginrec.c b/loginrec.c index 727a290..f231ef8 100644 --- a/loginrec.c +++ b/loginrec.c @@ -29,6 +29,8 @@ ** loginrec.c: platform-independent login recording and lastlog retrieval **/ +/* For now lastlog code has been removed as it wasn't being used by Dropbear. */ + /* The new login code explained ============================ @@ -174,11 +176,8 @@ int utmp_write_entry(struct logininfo *li); int utmpx_write_entry(struct logininfo *li); int wtmp_write_entry(struct logininfo *li); int wtmpx_write_entry(struct logininfo *li); -int lastlog_write_entry(struct logininfo *li); int syslogin_write_entry(struct logininfo *li); -int getlast_entry(struct logininfo *li); -int lastlog_get_entry(struct logininfo *li); int wtmp_get_entry(struct logininfo *li); int wtmpx_get_entry(struct logininfo *li); @@ -221,74 +220,6 @@ login_logout(struct logininfo *li) return login_write(li); } -/* login_get_lastlog_time(int) - Retrieve the last login time - * - * Retrieve the last login time for the given uid. Will try to use the - * system lastlog facilities if they are available, but will fall back - * to looking in wtmp/wtmpx if necessary - * - * Returns: - * 0 on failure, or if user has never logged in - * Time in seconds from the epoch if successful - * - * Useful preprocessor symbols: - * DISABLE_LASTLOG: If set, *never* even try to retrieve lastlog - * info - * USE_LASTLOG: If set, indicates the presence of system lastlog - * facilities. If this and DISABLE_LASTLOG are not set, - * try to retrieve lastlog information from wtmp/wtmpx. - */ -unsigned int -login_get_lastlog_time(const int uid) -{ - struct logininfo li; - - if (login_get_lastlog(&li, uid)) - return li.tv_sec; - else - return 0; -} - -/* login_get_lastlog(struct logininfo *, int) - Retrieve a lastlog entry - * - * Retrieve a logininfo structure populated (only partially) with - * information from the system lastlog data, or from wtmp/wtmpx if no - * system lastlog information exists. - * - * Note this routine must be given a pre-allocated logininfo. - * - * Returns: - * >0: A pointer to your struct logininfo if successful - * 0 on failure (will use OpenSSH's logging facilities for diagnostics) - * - */ -struct logininfo * -login_get_lastlog(struct logininfo *li, const int uid) -{ - struct passwd *pw; - - memset(li, '\0', sizeof(*li)); - li->uid = uid; - - /* - * If we don't have a 'real' lastlog, we need the username to - * reliably search wtmp(x) for the last login (see - * wtmp_get_entry().) - */ - pw = getpwuid(uid); - if (pw == NULL) - dropbear_exit("login_get_lastlog: Cannot find account for uid %i", uid); - - /* No MIN_SIZEOF here - we absolutely *must not* truncate the - * username */ - strlcpy(li->username, pw->pw_name, sizeof(li->username)); - - if (getlast_entry(li)) - return li; - else - return NULL; -} - /* login_alloc_entry(int, char*, char*, char*) - Allocate and initialise * a logininfo structure @@ -450,42 +381,6 @@ login_utmp_only(struct logininfo *li) } #endif -/** - ** getlast_entry: Call low-level functions to retrieve the last login - ** time. - **/ - -/* take the uid in li and return the last login time */ -int -getlast_entry(struct logininfo *li) -{ -#ifdef USE_LASTLOG - return(lastlog_get_entry(li)); -#else /* !USE_LASTLOG */ - -#ifdef DISABLE_LASTLOG - /* On some systems we shouldn't even try to obtain last login - * time, e.g. AIX */ - return 0; -# else /* DISABLE_LASTLOG */ - /* Try to retrieve the last login time from wtmp */ -# if defined(USE_WTMP) && (defined(HAVE_STRUCT_UTMP_UT_TIME) || defined(HAVE_STRUCT_UTMP_UT_TV)) - /* retrieve last login time from utmp */ - return (wtmp_get_entry(li)); -# else /* defined(USE_WTMP) && (defined(HAVE_STRUCT_UTMP_UT_TIME) || defined(HAVE_STRUCT_UTMP_UT_TV)) */ - /* If wtmp isn't available, try wtmpx */ -# if defined(USE_WTMPX) && (defined(HAVE_STRUCT_UTMPX_UT_TIME) || defined(HAVE_STRUCT_UTMPX_UT_TV)) - /* retrieve last login time from utmpx */ - return (wtmpx_get_entry(li)); -# else - /* Give up: No means of retrieving last login time */ - return 0; -# endif /* USE_WTMPX && (HAVE_STRUCT_UTMPX_UT_TIME || HAVE_STRUCT_UTMPX_UT_TV) */ -# endif /* USE_WTMP && (HAVE_STRUCT_UTMP_UT_TIME || HAVE_STRUCT_UTMP_UT_TV) */ -# endif /* DISABLE_LASTLOG */ -#endif /* USE_LASTLOG */ -} - /* @@ -1495,45 +1390,4 @@ lastlog_write_entry(struct logininfo *li) } } -static void -lastlog_populate_entry(struct logininfo *li, struct lastlog *last) -{ - line_fullname(li->line, last->ll_line, sizeof(li->line)); - strlcpy(li->hostname, last->ll_host, - MIN_SIZEOF(li->hostname, last->ll_host)); - li->tv_sec = last->ll_time; -} - -int -lastlog_get_entry(struct logininfo *li) -{ - struct lastlog last; - int fd, ret; - - if (!lastlog_openseek(li, &fd, O_RDONLY)) - return (0); - - ret = atomicio(read, fd, &last, sizeof(last)); - close(fd); - - switch (ret) { - case 0: - memset(&last, '\0', sizeof(last)); - /* FALLTHRU */ - case sizeof(last): - lastlog_populate_entry(li, &last); - return (1); - case -1: - dropbear_log(LOG_ERR, "Error reading from %s: %s", - LASTLOG_FILE, strerror(errno)); - return (0); - default: - dropbear_log(LOG_ERR, "Error reading from %s: Expecting %d, got %d", - LASTLOG_FILE, sizeof(last), ret); - return (0); - } - - /* NOTREACHED */ - return (0); -} #endif /* USE_LASTLOG */ diff --git a/loginrec.h b/loginrec.h index f253fa6..03d26b9 100644 --- a/loginrec.h +++ b/loginrec.h @@ -150,7 +150,6 @@ struct logininfo { /** 'public' functions */ -/* construct a new login entry */ struct logininfo *login_alloc_entry(int pid, const char *username, const char *hostname, const char *line); /* free a structure */ @@ -178,14 +177,6 @@ int login_log_entry(struct logininfo *li); void login_set_addr(struct logininfo *li, const struct sockaddr *sa, const unsigned int sa_size); -/* - * lastlog retrieval functions - */ -/* lastlog *entry* functions fill out a logininfo */ -struct logininfo *login_get_lastlog(struct logininfo *li, const int uid); -/* lastlog *time* functions return time_t equivalent (uint) */ -unsigned int login_get_lastlog_time(const int uid); - /* produce various forms of the line filename */ char *line_fullname(char *dst, const char *src, size_t dstsize); char *line_stripname(char *dst, const char *src, size_t dstsize); -- cgit v1.2.3 From 8c1a429c446d00ad2030814e9f3d7afccc08ddf8 Mon Sep 17 00:00:00 2001 From: Matt Johnston Date: Sun, 2 Jan 2005 20:25:56 +0000 Subject: Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place --HG-- extra : convert_revision : d928bc851e32be7bd429bf7504b148c0e4bf7e2f --- buffer.c | 4 +- circbuffer.c | 4 +- cli-algo.c | 2 +- cli-auth.c | 30 ++++++------ cli-authpasswd.c | 4 +- cli-authpubkey.c | 32 ++++++------- cli-channel.c | 8 ++-- cli-chansession.c | 34 +++++++------- cli-kex.c | 34 +++++++------- cli-main.c | 2 +- cli-runopts.c | 22 ++++----- cli-service.c | 10 ++-- cli-session.c | 22 ++++----- cli-tcpfwd.c | 22 ++++----- common-algo.c | 2 +- common-channel.c | 136 +++++++++++++++++++++++++++--------------------------- common-kex.c | 64 ++++++++++++------------- common-session.c | 28 +++++------ dbutil.c | 42 ++++++++--------- debug.h | 4 +- dropbearkey.c | 4 +- dss.c | 24 +++++----- listener.c | 4 +- packet.c | 34 +++++++------- process-packet.c | 14 +++--- queue.c | 6 +-- rsa.c | 50 ++++++++++---------- signkey.c | 36 +++++++-------- svr-agentfwd.c | 2 +- svr-algo.c | 2 +- svr-auth.c | 44 +++++++++--------- svr-authpam.c | 20 ++++---- svr-authpubkey.c | 38 +++++++-------- svr-chansession.c | 54 +++++++++++----------- svr-kex.c | 8 ++-- svr-main.c | 6 +-- svr-runopts.c | 4 +- svr-service.c | 8 ++-- svr-tcpfwd.c | 38 +++++++-------- svr-x11fwd.c | 2 +- tcp-accept.c | 8 ++-- 41 files changed, 456 insertions(+), 456 deletions(-) (limited to 'dss.c') diff --git a/buffer.c b/buffer.c index 793eee1..dff861f 100644 --- a/buffer.c +++ b/buffer.c @@ -258,7 +258,7 @@ void buf_putbytes(buffer *buf, const unsigned char *bytes, unsigned int len) { void buf_putmpint(buffer* buf, mp_int * mp) { unsigned int len, pad = 0; - TRACE(("enter buf_putmpint")); + TRACE(("enter buf_putmpint")) assert(mp != NULL); @@ -294,7 +294,7 @@ void buf_putmpint(buffer* buf, mp_int * mp) { buf_incrwritepos(buf, len-pad); } - TRACE(("leave buf_putmpint")); + TRACE(("leave buf_putmpint")) } /* Retrieve an mp_int from the buffer. diff --git a/circbuffer.c b/circbuffer.c index a2edcbb..6dc9179 100644 --- a/circbuffer.c +++ b/circbuffer.c @@ -70,7 +70,7 @@ unsigned int cbuf_readlen(circbuffer *cbuf) { assert(((2*cbuf->size)+cbuf->readpos-cbuf->writepos)%cbuf->size == (cbuf->size-cbuf->used)%cbuf->size); if (cbuf->used == 0) { - TRACE(("cbuf_readlen: unused buffer")); + TRACE(("cbuf_readlen: unused buffer")) return 0; } @@ -88,7 +88,7 @@ unsigned int cbuf_writelen(circbuffer *cbuf) { assert(((2*cbuf->size)+cbuf->readpos-cbuf->writepos)%cbuf->size == (cbuf->size-cbuf->used)%cbuf->size); if (cbuf->used == cbuf->size) { - TRACE(("cbuf_writelen: full buffer")); + TRACE(("cbuf_writelen: full buffer")) return 0; /* full */ } diff --git a/cli-algo.c b/cli-algo.c index 5edd6a1..ec3a1ff 100644 --- a/cli-algo.c +++ b/cli-algo.c @@ -46,7 +46,7 @@ algo_type * cli_buf_match_algo(buffer* buf, algo_type localalgos[], /* get the comma-separated list from the buffer ie "algo1,algo2,algo3" */ algolist = buf_getstring(buf, &len); - TRACE(("cli_buf_match_algo: %s", algolist)); + TRACE(("cli_buf_match_algo: %s", algolist)) if (len > MAX_PROPOSED_ALGO*(MAX_NAME_LEN+1)) { goto out; /* just a sanity check, no other use */ } diff --git a/cli-auth.c b/cli-auth.c index 9dedfa8..dfd9bbb 100644 --- a/cli-auth.c +++ b/cli-auth.c @@ -42,7 +42,7 @@ void cli_authinitialise() { /* Send a "none" auth request to get available methods */ void cli_auth_getmethods() { - TRACE(("enter cli_auth_getmethods")); + TRACE(("enter cli_auth_getmethods")) CHECKCLEARTOWRITE(); @@ -54,7 +54,7 @@ void cli_auth_getmethods() { buf_putstring(ses.writepayload, "none", 4); /* 'none' method */ encrypt_packet(); - TRACE(("leave cli_auth_getmethods")); + TRACE(("leave cli_auth_getmethods")) } @@ -64,9 +64,9 @@ void recv_msg_userauth_banner() { unsigned int bannerlen; unsigned int i, linecount; - TRACE(("enter recv_msg_userauth_banner")); + TRACE(("enter recv_msg_userauth_banner")) if (ses.authstate.authdone) { - TRACE(("leave recv_msg_userauth_banner: banner after auth done")); + TRACE(("leave recv_msg_userauth_banner: banner after auth done")) return; } @@ -74,7 +74,7 @@ void recv_msg_userauth_banner() { buf_eatstring(ses.payload); /* The language string */ if (bannerlen > MAX_BANNER_SIZE) { - TRACE(("recv_msg_userauth_banner: bannerlen too long: %d", bannerlen)); + TRACE(("recv_msg_userauth_banner: bannerlen too long: %d", bannerlen)) goto out; } @@ -96,7 +96,7 @@ void recv_msg_userauth_banner() { out: m_free(banner); - TRACE(("leave recv_msg_userauth_banner")); + TRACE(("leave recv_msg_userauth_banner")) } @@ -108,12 +108,12 @@ void recv_msg_userauth_failure() { unsigned int partial = 0; unsigned int i = 0; - TRACE(("<- MSG_USERAUTH_FAILURE")); - TRACE(("enter recv_msg_userauth_failure")); + TRACE(("<- MSG_USERAUTH_FAILURE")) + TRACE(("enter recv_msg_userauth_failure")) if (cli_ses.state != USERAUTH_REQ_SENT) { /* Perhaps we should be more fatal? */ - TRACE(("But we didn't send a userauth request!!!!!!")); + TRACE(("But we didn't send a userauth request!!!!!!")) return; } @@ -135,7 +135,7 @@ void recv_msg_userauth_failure() { ses.authstate.failcount++; } - TRACE(("Methods (len %d): '%s'", methlen, methods)); + TRACE(("Methods (len %d): '%s'", methlen, methods)) ses.authstate.authdone=0; ses.authstate.authtypes=0; @@ -150,7 +150,7 @@ void recv_msg_userauth_failure() { tok = methods; /* tok stores the next method we'll compare */ for (i = 0; i <= methlen; i++) { if (methods[i] == '\0') { - TRACE(("auth method '%s'", tok)); + TRACE(("auth method '%s'", tok)) #ifdef ENABLE_CLI_PUBKEY_AUTH if (strncmp(AUTH_METHOD_PUBKEY, tok, AUTH_METHOD_PUBKEY_LEN) == 0) { @@ -173,18 +173,18 @@ void recv_msg_userauth_failure() { cli_ses.state = USERAUTH_FAIL_RCVD; - TRACE(("leave recv_msg_userauth_failure")); + TRACE(("leave recv_msg_userauth_failure")) } void recv_msg_userauth_success() { - TRACE(("received msg_userauth_success")); + TRACE(("received msg_userauth_success")) ses.authstate.authdone = 1; cli_ses.state = USERAUTH_SUCCESS_RCVD; } void cli_auth_try() { - TRACE(("enter cli_auth_try")); + TRACE(("enter cli_auth_try")) int finished = 0; CHECKCLEARTOWRITE(); @@ -208,5 +208,5 @@ void cli_auth_try() { dropbear_exit("No auth methods could be used."); } - TRACE(("leave cli_auth_try")); + TRACE(("leave cli_auth_try")) } diff --git a/cli-authpasswd.c b/cli-authpasswd.c index 724203b..02bce18 100644 --- a/cli-authpasswd.c +++ b/cli-authpasswd.c @@ -33,7 +33,7 @@ int cli_auth_password() { char* password = NULL; - TRACE(("enter cli_auth_password")); + TRACE(("enter cli_auth_password")) CHECKCLEARTOWRITE(); password = getpass("Password: "); @@ -56,7 +56,7 @@ int cli_auth_password() { encrypt_packet(); m_burn(password, strlen(password)); - TRACE(("leave cli_auth_password")); + TRACE(("leave cli_auth_password")) return 1; /* Password auth can always be tried */ } diff --git a/cli-authpubkey.c b/cli-authpubkey.c index d308dc3..61b17d9 100644 --- a/cli-authpubkey.c +++ b/cli-authpubkey.c @@ -41,7 +41,7 @@ void cli_pubkeyfail() { struct PubkeyList *keyitem; struct PubkeyList **previtem; - TRACE(("enter cli_pubkeyfail")); + TRACE(("enter cli_pubkeyfail")) previtem = &cli_opts.pubkeys; /* Find the key we failed with, and remove it */ @@ -55,7 +55,7 @@ void cli_pubkeyfail() { sign_key_free(cli_ses.lastpubkey->key); /* It won't be used again */ m_free(cli_ses.lastpubkey); - TRACE(("leave cli_pubkeyfail")); + TRACE(("leave cli_pubkeyfail")) } void recv_msg_userauth_pk_ok() { @@ -67,11 +67,11 @@ void recv_msg_userauth_pk_ok() { int keytype; unsigned int remotelen; - TRACE(("enter recv_msg_userauth_pk_ok")); + TRACE(("enter recv_msg_userauth_pk_ok")) algotype = buf_getstring(ses.payload, &algolen); keytype = signkey_type_from_name(algotype, algolen); - TRACE(("recv_msg_userauth_pk_ok: type %d", keytype)); + TRACE(("recv_msg_userauth_pk_ok: type %d", keytype)) m_free(algotype); keybuf = buf_new(MAX_PUBKEY_SIZE); @@ -84,7 +84,7 @@ void recv_msg_userauth_pk_ok() { if (keyitem->type != keytype) { /* Types differed */ - TRACE(("types differed")); + TRACE(("types differed")) continue; } @@ -98,14 +98,14 @@ void recv_msg_userauth_pk_ok() { if (keybuf->len-4 != remotelen) { - TRACE(("lengths differed: localh %d remote %d", keybuf->len, remotelen)); + TRACE(("lengths differed: localh %d remote %d", keybuf->len, remotelen)) /* Lengths differed */ continue; } if (memcmp(buf_getptr(keybuf, remotelen), buf_getptr(ses.payload, remotelen), remotelen) != 0) { /* Data didn't match this key */ - TRACE(("data differed")); + TRACE(("data differed")) continue; } @@ -114,15 +114,15 @@ void recv_msg_userauth_pk_ok() { } if (keyitem != NULL) { - TRACE(("matching key")); + TRACE(("matching key")) /* XXX TODO: if it's an encrypted key, here we ask for their * password */ send_msg_userauth_pubkey(keyitem->key, keytype, 1); } else { - TRACE(("That was whacky. We got told that a key was valid, but it didn't match our list. Sounds like dodgy code on Dropbear's part")); + TRACE(("That was whacky. We got told that a key was valid, but it didn't match our list. Sounds like dodgy code on Dropbear's part")) } - TRACE(("leave recv_msg_userauth_pk_ok")); + TRACE(("leave recv_msg_userauth_pk_ok")) } /* TODO: make it take an agent reference to use as well */ @@ -132,7 +132,7 @@ static void send_msg_userauth_pubkey(sign_key *key, int type, int realsign) { int algolen; buffer* sigbuf = NULL; - TRACE(("enter send_msg_userauth_pubkey")); + TRACE(("enter send_msg_userauth_pubkey")) CHECKCLEARTOWRITE(); buf_putbyte(ses.writepayload, SSH_MSG_USERAUTH_REQUEST); @@ -154,7 +154,7 @@ static void send_msg_userauth_pubkey(sign_key *key, int type, int realsign) { buf_put_pub_key(ses.writepayload, key, type); if (realsign) { - TRACE(("realsign")); + TRACE(("realsign")) /* We put the signature as well - this contains string(session id), then * the contents of the write payload to this point */ sigbuf = buf_new(4 + SHA1_HASH_SIZE + ses.writepayload->len); @@ -165,22 +165,22 @@ static void send_msg_userauth_pubkey(sign_key *key, int type, int realsign) { } encrypt_packet(); - TRACE(("leave send_msg_userauth_pubkey")); + TRACE(("leave send_msg_userauth_pubkey")) } int cli_auth_pubkey() { - TRACE(("enter cli_auth_pubkey")); + TRACE(("enter cli_auth_pubkey")) if (cli_opts.pubkeys != NULL) { /* Send a trial request */ send_msg_userauth_pubkey(cli_opts.pubkeys->key, cli_opts.pubkeys->type, 0); cli_ses.lastpubkey = cli_opts.pubkeys; - TRACE(("leave cli_auth_pubkey-success")); + TRACE(("leave cli_auth_pubkey-success")) return 1; } else { - TRACE(("leave cli_auth_pubkey-failure")); + TRACE(("leave cli_auth_pubkey-failure")) return 0; } } diff --git a/cli-channel.c b/cli-channel.c index ea4af69..42e165b 100644 --- a/cli-channel.c +++ b/cli-channel.c @@ -37,7 +37,7 @@ void recv_msg_channel_extended_data() { struct Channel *channel; unsigned int datatype; - TRACE(("enter recv_msg_channel_extended_data")); + TRACE(("enter recv_msg_channel_extended_data")) chan = buf_getint(ses.payload); channel = getchannel(chan); @@ -47,7 +47,7 @@ void recv_msg_channel_extended_data() { } if (channel->type != &clichansess) { - TRACE(("leave recv_msg_channel_extended_data: chantype is wrong")); + TRACE(("leave recv_msg_channel_extended_data: chantype is wrong")) return; /* we just ignore it */ } @@ -55,11 +55,11 @@ void recv_msg_channel_extended_data() { if (datatype != SSH_EXTENDED_DATA_STDERR) { TRACE(("leave recv_msg_channel_extended_data: wrong datatype: %d", - datatype)); + datatype)) return; } common_recv_msg_channel_data(channel, channel->errfd, channel->extrabuf); - TRACE(("leave recv_msg_channel_extended_data")); + TRACE(("leave recv_msg_channel_extended_data")) } diff --git a/cli-chansession.c b/cli-chansession.c index 35be671..76e9dfa 100644 --- a/cli-chansession.c +++ b/cli-chansession.c @@ -59,20 +59,20 @@ static void cli_chansessreq(struct Channel *channel) { unsigned char* type = NULL; int wantreply; - TRACE(("enter cli_chansessreq")); + TRACE(("enter cli_chansessreq")) type = buf_getstring(ses.payload, NULL); wantreply = buf_getbyte(ses.payload); if (strcmp(type, "exit-status") != 0) { - TRACE(("unknown request '%s'", type)); + TRACE(("unknown request '%s'", type)) send_msg_channel_failure(channel); goto out; } /* We'll just trust what they tell us */ cli_ses.retval = buf_getint(ses.payload); - TRACE(("got exit-status of '%d'", cli_ses.retval)); + TRACE(("got exit-status of '%d'", cli_ses.retval)) out: m_free(type); @@ -108,10 +108,10 @@ static void cli_tty_setup() { struct termios tio; - TRACE(("enter cli_pty_setup")); + TRACE(("enter cli_pty_setup")) if (cli_ses.tty_raw_mode == 1) { - TRACE(("leave cli_tty_setup: already in raw mode!")); + TRACE(("leave cli_tty_setup: already in raw mode!")) return; } @@ -139,15 +139,15 @@ static void cli_tty_setup() { } cli_ses.tty_raw_mode = 1; - TRACE(("leave cli_tty_setup")); + TRACE(("leave cli_tty_setup")) } void cli_tty_cleanup() { - TRACE(("enter cli_tty_cleanup")); + TRACE(("enter cli_tty_cleanup")) if (cli_ses.tty_raw_mode == 0) { - TRACE(("leave cli_tty_cleanup: not in raw mode")); + TRACE(("leave cli_tty_cleanup: not in raw mode")) return; } @@ -157,12 +157,12 @@ void cli_tty_cleanup() { cli_ses.tty_raw_mode = 0; } - TRACE(("leave cli_tty_cleanup")); + TRACE(("leave cli_tty_cleanup")) } static void put_termcodes() { - TRACE(("enter put_termcodes")); + TRACE(("enter put_termcodes")) struct termios tio; unsigned int sshcode; @@ -232,7 +232,7 @@ static void put_termcodes() { buf_putint(ses.writepayload, bufpos2 - bufpos1 - 4); /* len(termcodes) */ buf_setpos(ses.writepayload, bufpos2); /* Back where we were */ - TRACE(("leave put_termcodes")); + TRACE(("leave put_termcodes")) } static void put_winsize() { @@ -284,7 +284,7 @@ static void send_chansess_pty_req(struct Channel *channel) { unsigned char* term = NULL; - TRACE(("enter send_chansess_pty_req")); + TRACE(("enter send_chansess_pty_req")) start_channel_request(channel, "pty-req"); @@ -310,14 +310,14 @@ static void send_chansess_pty_req(struct Channel *channel) { if (signal(SIGWINCH, sigwinch_handler) == SIG_ERR) { dropbear_exit("signal error"); } - TRACE(("leave send_chansess_pty_req")); + TRACE(("leave send_chansess_pty_req")) } static void send_chansess_shell_req(struct Channel *channel) { unsigned char* reqtype = NULL; - TRACE(("enter send_chansess_shell_req")); + TRACE(("enter send_chansess_shell_req")) if (cli_opts.cmd) { reqtype = "exec"; @@ -334,7 +334,7 @@ static void send_chansess_shell_req(struct Channel *channel) { } encrypt_packet(); - TRACE(("leave send_chansess_shell_req")); + TRACE(("leave send_chansess_shell_req")) } static int cli_initchansess(struct Channel *channel) { @@ -367,7 +367,7 @@ static int cli_initchansess(struct Channel *channel) { void cli_send_chansess_request() { - TRACE(("enter cli_send_chansess_request")); + TRACE(("enter cli_send_chansess_request")) if (send_msg_channel_open_init(STDIN_FILENO, &clichansess) == DROPBEAR_FAILURE) { dropbear_exit("Couldn't open initial channel"); @@ -375,6 +375,6 @@ void cli_send_chansess_request() { /* No special channel request data */ encrypt_packet(); - TRACE(("leave cli_send_chansess_request")); + TRACE(("leave cli_send_chansess_request")) } diff --git a/cli-kex.c b/cli-kex.c index c8949ef..03a0670 100644 --- a/cli-kex.c +++ b/cli-kex.c @@ -65,14 +65,14 @@ void recv_msg_kexdh_reply() { unsigned char* keyblob = NULL; - TRACE(("enter recv_msg_kexdh_reply")); + TRACE(("enter recv_msg_kexdh_reply")) if (cli_ses.kex_state != KEXDH_INIT_SENT) { dropbear_exit("Received out-of-order kexdhreply"); } m_mp_init(&dh_f); type = ses.newkeys->algo_hostkey; - TRACE(("type is %d", type)); + TRACE(("type is %d", type)) hostkey = new_sign_key(); keybloblen = buf_getint(ses.payload); @@ -84,12 +84,12 @@ void recv_msg_kexdh_reply() { } if (buf_get_pub_key(ses.payload, hostkey, &type) != DROPBEAR_SUCCESS) { - TRACE(("failed getting pubkey")); + TRACE(("failed getting pubkey")) dropbear_exit("Bad KEX packet"); } if (buf_getmpint(ses.payload, &dh_f) != DROPBEAR_SUCCESS) { - TRACE(("failed getting mpint")); + TRACE(("failed getting mpint")) dropbear_exit("Bad KEX packet"); } @@ -109,7 +109,7 @@ void recv_msg_kexdh_reply() { send_msg_newkeys(); ses.requirenext = SSH_MSG_NEWKEYS; - TRACE(("leave recv_msg_kexdh_init")); + TRACE(("leave recv_msg_kexdh_init")) } static void ask_to_confirm(unsigned char* keyblob, unsigned int keybloblen) { @@ -156,7 +156,7 @@ static void checkhostkey(unsigned char* keyblob, unsigned int keybloblen) { if (errno != EEXIST) { dropbear_log(LOG_INFO, "Warning: failed creating ~/.ssh: %s", strerror(errno)); - TRACE(("mkdir didn't work: %s", strerror(errno))); + TRACE(("mkdir didn't work: %s", strerror(errno))) ask_to_confirm(keyblob, keybloblen); goto out; /* only get here on success */ } @@ -170,14 +170,14 @@ static void checkhostkey(unsigned char* keyblob, unsigned int keybloblen) { } else { /* We mightn't have been able to open it if it was read-only */ if (errno == EACCES || errno == EROFS) { - TRACE(("trying readonly: %s", strerror(errno))); + TRACE(("trying readonly: %s", strerror(errno))) readonly = 1; hostsfile = fopen(filename, "r"); } } if (hostsfile == NULL) { - TRACE(("hostsfile didn't open: %s", strerror(errno))); + TRACE(("hostsfile didn't open: %s", strerror(errno))) ask_to_confirm(keyblob, keybloblen); goto out; /* We only get here on success */ } @@ -188,7 +188,7 @@ static void checkhostkey(unsigned char* keyblob, unsigned int keybloblen) { do { if (buf_getline(line, hostsfile) == DROPBEAR_FAILURE) { - TRACE(("failed reading line: prob EOF")); + TRACE(("failed reading line: prob EOF")) break; } @@ -197,32 +197,32 @@ static void checkhostkey(unsigned char* keyblob, unsigned int keybloblen) { * buf_getfoo() past the end and die horribly - the base64 parsing * code is what tiptoes up to the end nicely */ if (line->len < (hostlen+30) ) { - TRACE(("line is too short to be sensible")); + TRACE(("line is too short to be sensible")) continue; } /* Compare hostnames */ if (strncmp(cli_opts.remotehost, buf_getptr(line, hostlen), hostlen) != 0) { - TRACE(("hosts don't match")); + TRACE(("hosts don't match")) continue; } buf_incrpos(line, hostlen); if (buf_getbyte(line) != ' ') { /* there wasn't a space after the hostname, something dodgy */ - TRACE(("missing space afte matching hostname")); + TRACE(("missing space afte matching hostname")) continue; } if ( strncmp(buf_getptr(line, algolen), algoname, algolen) != 0) { - TRACE(("algo doesn't match")); + TRACE(("algo doesn't match")) continue; } buf_incrpos(line, algolen); if (buf_getbyte(line) != ' ') { - TRACE(("missing space after algo")); + TRACE(("missing space after algo")) continue; } @@ -231,7 +231,7 @@ static void checkhostkey(unsigned char* keyblob, unsigned int keybloblen) { if (ret == DROPBEAR_SUCCESS) { /* Good matching key */ - TRACE(("good matching key")); + TRACE(("good matching key")) goto out; } @@ -244,7 +244,7 @@ static void checkhostkey(unsigned char* keyblob, unsigned int keybloblen) { /* If we get here, they said yes */ if (readonly) { - TRACE(("readonly")); + TRACE(("readonly")) goto out; } @@ -257,7 +257,7 @@ static void checkhostkey(unsigned char* keyblob, unsigned int keybloblen) { buf_putbytes(line, algoname, algolen); buf_putbyte(line, ' '); len = line->size - line->pos; - TRACE(("keybloblen %d, len %d", keybloblen, len)); + TRACE(("keybloblen %d, len %d", keybloblen, len)) /* The only failure with base64 is buffer_overflow, but buf_getwriteptr * will die horribly in the case anyway */ base64_encode(keyblob, keybloblen, buf_getwriteptr(line, len), &len); diff --git a/cli-main.c b/cli-main.c index def2c72..3f767c9 100644 --- a/cli-main.c +++ b/cli-main.c @@ -50,7 +50,7 @@ int main(int argc, char ** argv) { cli_getopts(argc, argv); TRACE(("user='%s' host='%s' port='%s'", cli_opts.username, - cli_opts.remotehost, cli_opts.remoteport)); + cli_opts.remotehost, cli_opts.remoteport)) if (signal(SIGPIPE, SIG_IGN) == SIG_ERR) { dropbear_exit("signal() error"); diff --git a/cli-runopts.c b/cli-runopts.c index b8ecdc0..3ac5c2b 100644 --- a/cli-runopts.c +++ b/cli-runopts.c @@ -116,7 +116,7 @@ void cli_getopts(int argc, char ** argv) { #endif #ifdef ENABLE_CLI_REMOTETCPFWD if (nextisremote) { - TRACE(("nextisremote true")); + TRACE(("nextisremote true")) addforward(argv[i], &cli_opts.remotefwds); nextisremote = 0; continue; @@ -124,7 +124,7 @@ void cli_getopts(int argc, char ** argv) { #endif #ifdef ENABLE_CLI_LOCALTCPFWD if (nextislocal) { - TRACE(("nextislocal true")); + TRACE(("nextislocal true")) addforward(argv[i], &cli_opts.localfwds); nextislocal = 0; continue; @@ -214,7 +214,7 @@ void cli_getopts(int argc, char ** argv) { continue; /* next argument */ } else { - TRACE(("non-flag arg: '%s'", argv[i])); + TRACE(("non-flag arg: '%s'", argv[i])) /* Either the hostname or commands */ @@ -343,7 +343,7 @@ static void addforward(char* origstr, struct TCPFwdList** fwdlist) { struct TCPFwdList* newfwd = NULL; char * str = NULL; - TRACE(("enter addforward")); + TRACE(("enter addforward")) /* We probably don't want to be editing argvs */ str = m_strdup(origstr); @@ -352,7 +352,7 @@ static void addforward(char* origstr, struct TCPFwdList** fwdlist) { connectaddr = strchr(str, ':'); if (connectaddr == NULL) { - TRACE(("connectaddr == NULL")); + TRACE(("connectaddr == NULL")) goto fail; } @@ -361,7 +361,7 @@ static void addforward(char* origstr, struct TCPFwdList** fwdlist) { connectport = strchr(connectaddr, ':'); if (connectport == NULL) { - TRACE(("connectport == NULL")); + TRACE(("connectport == NULL")) goto fail; } @@ -374,32 +374,32 @@ static void addforward(char* origstr, struct TCPFwdList** fwdlist) { * the check later only checks for >= MAX_PORT */ newfwd->listenport = strtol(listenport, NULL, 10); if (errno != 0) { - TRACE(("bad listenport strtol")); + TRACE(("bad listenport strtol")) goto fail; } newfwd->connectport = strtol(connectport, NULL, 10); if (errno != 0) { - TRACE(("bad connectport strtol")); + TRACE(("bad connectport strtol")) goto fail; } newfwd->connectaddr = connectaddr; if (newfwd->listenport > 65535) { - TRACE(("listenport > 65535")); + TRACE(("listenport > 65535")) goto badport; } if (newfwd->connectport > 65535) { - TRACE(("connectport > 65535")); + TRACE(("connectport > 65535")) goto badport; } newfwd->next = *fwdlist; *fwdlist = newfwd; - TRACE(("leave addforward: done")); + TRACE(("leave addforward: done")) return; fail: diff --git a/cli-service.c b/cli-service.c index d14c77f..87b6ed2 100644 --- a/cli-service.c +++ b/cli-service.c @@ -33,7 +33,7 @@ void send_msg_service_request(char* servicename) { - TRACE(("enter send_msg_service_request: servicename='%s'", servicename)); + TRACE(("enter send_msg_service_request: servicename='%s'", servicename)) CHECKCLEARTOWRITE(); @@ -41,7 +41,7 @@ void send_msg_service_request(char* servicename) { buf_putstring(ses.writepayload, servicename, strlen(servicename)); encrypt_packet(); - TRACE(("leave send_msg_service_request")); + TRACE(("leave send_msg_service_request")) } /* This just sets up the state variables right for the main client session loop @@ -51,7 +51,7 @@ void recv_msg_service_accept() { unsigned char* servicename; unsigned int len; - TRACE(("enter recv_msg_service_accept")); + TRACE(("enter recv_msg_service_accept")) servicename = buf_getstring(ses.payload, &len); @@ -62,7 +62,7 @@ void recv_msg_service_accept() { cli_ses.state = SERVICE_AUTH_ACCEPT_RCVD; m_free(servicename); - TRACE(("leave recv_msg_service_accept: done ssh-userauth")); + TRACE(("leave recv_msg_service_accept: done ssh-userauth")) return; } @@ -77,7 +77,7 @@ void recv_msg_service_accept() { cli_ses.state = SERVICE_CONN_ACCEPT_RCVD; m_free(servicename); - TRACE(("leave recv_msg_service_accept: done ssh-connection")); + TRACE(("leave recv_msg_service_accept: done ssh-connection")) return; } diff --git a/cli-session.c b/cli-session.c index 0ea33af..4d6a645 100644 --- a/cli-session.c +++ b/cli-session.c @@ -139,7 +139,7 @@ static void cli_session_init() { * service, userauth and channel requests */ static void cli_sessionloop() { - TRACE(("enter cli_sessionloop")); + TRACE(("enter cli_sessionloop")) if (ses.lastpacket == SSH_MSG_KEXINIT && cli_ses.kex_state == KEX_NOTHING) { cli_ses.kex_state = KEXINIT_RCVD; @@ -151,7 +151,7 @@ static void cli_sessionloop() { * negotiation would have failed. */ send_msg_kexdh_init(); cli_ses.kex_state = KEXDH_INIT_SENT; - TRACE(("leave cli_sessionloop: done with KEXINIT_RCVD")); + TRACE(("leave cli_sessionloop: done with KEXINIT_RCVD")) return; } @@ -163,14 +163,14 @@ static void cli_sessionloop() { /* We shouldn't do anything else if a KEX is in progress */ if (cli_ses.kex_state != KEX_NOTHING) { - TRACE(("leave cli_sessionloop: kex_state != KEX_NOTHING")); + TRACE(("leave cli_sessionloop: kex_state != KEX_NOTHING")) return; } /* We should exit if we haven't donefirstkex: we shouldn't reach here * in normal operation */ if (ses.kexstate.donefirstkex == 0) { - TRACE(("XXX XXX might be bad! leave cli_sessionloop: haven't donefirstkex")); + TRACE(("XXX XXX might be bad! leave cli_sessionloop: haven't donefirstkex")) return; } @@ -181,32 +181,32 @@ static void cli_sessionloop() { * userauth */ send_msg_service_request(SSH_SERVICE_USERAUTH); cli_ses.state = SERVICE_AUTH_REQ_SENT; - TRACE(("leave cli_sessionloop: sent userauth service req")); + TRACE(("leave cli_sessionloop: sent userauth service req")) return; /* userauth code */ case SERVICE_AUTH_ACCEPT_RCVD: cli_auth_getmethods(); cli_ses.state = USERAUTH_REQ_SENT; - TRACE(("leave cli_sessionloop: sent userauth methods req")); + TRACE(("leave cli_sessionloop: sent userauth methods req")) return; case USERAUTH_FAIL_RCVD: cli_auth_try(); cli_ses.state = USERAUTH_REQ_SENT; - TRACE(("leave cli_sessionloop: cli_auth_try")); + TRACE(("leave cli_sessionloop: cli_auth_try")) return; /* case USERAUTH_SUCCESS_RCVD: send_msg_service_request(SSH_SERVICE_CONNECTION); cli_ses.state = SERVICE_CONN_REQ_SENT; - TRACE(("leave cli_sessionloop: sent ssh-connection service req")); + TRACE(("leave cli_sessionloop: sent ssh-connection service req")) return; case SERVICE_CONN_ACCEPT_RCVD: cli_send_chansess_request(); - TRACE(("leave cli_sessionloop: cli_send_chansess_request")); + TRACE(("leave cli_sessionloop: cli_send_chansess_request")) cli_ses.state = SESSION_RUNNING; return; */ @@ -219,7 +219,7 @@ static void cli_sessionloop() { setup_remotetcp(); #endif cli_send_chansess_request(); - TRACE(("leave cli_sessionloop: cli_send_chansess_request")); + TRACE(("leave cli_sessionloop: cli_send_chansess_request")) cli_ses.state = SESSION_RUNNING; return; @@ -240,7 +240,7 @@ static void cli_sessionloop() { break; } - TRACE(("leave cli_sessionloop: fell out")); + TRACE(("leave cli_sessionloop: fell out")) } diff --git a/cli-tcpfwd.c b/cli-tcpfwd.c index b4d99e9..aa5b720 100644 --- a/cli-tcpfwd.c +++ b/cli-tcpfwd.c @@ -62,10 +62,10 @@ void setup_localtcp() { int ret; - TRACE(("enter setup_localtcp")); + TRACE(("enter setup_localtcp")) if (cli_opts.localfwds == NULL) { - TRACE(("cli_opts.localfwds == NULL")); + TRACE(("cli_opts.localfwds == NULL")) } while (cli_opts.localfwds != NULL) { @@ -81,7 +81,7 @@ void setup_localtcp() { cli_opts.localfwds = cli_opts.localfwds->next; } - TRACE(("leave setup_localtcp")); + TRACE(("leave setup_localtcp")) } @@ -105,7 +105,7 @@ static int cli_localtcp(unsigned int listenport, const char* remoteaddr, if (ret == DROPBEAR_FAILURE) { m_free(tcpinfo); } - TRACE(("leave cli_localtcp: %d", ret)); + TRACE(("leave cli_localtcp: %d", ret)) return ret; } #endif /* ENABLE_CLI_LOCALTCPFWD */ @@ -113,7 +113,7 @@ static int cli_localtcp(unsigned int listenport, const char* remoteaddr, #ifdef ENABLE_CLI_REMOTETCPFWD static void send_msg_global_request_remotetcp(int port) { - TRACE(("enter send_msg_global_request_remotetcp")); + TRACE(("enter send_msg_global_request_remotetcp")) CHECKCLEARTOWRITE(); buf_putbyte(ses.writepayload, SSH_MSG_GLOBAL_REQUEST); @@ -124,17 +124,17 @@ static void send_msg_global_request_remotetcp(int port) { encrypt_packet(); - TRACE(("leave send_msg_global_request_remotetcp")); + TRACE(("leave send_msg_global_request_remotetcp")) } void setup_remotetcp() { struct TCPFwdList * iter = NULL; - TRACE(("enter setup_remotetcp")); + TRACE(("enter setup_remotetcp")) if (cli_opts.remotefwds == NULL) { - TRACE(("cli_opts.remotefwds == NULL")); + TRACE(("cli_opts.remotefwds == NULL")) } iter = cli_opts.remotefwds; @@ -143,7 +143,7 @@ void setup_remotetcp() { send_msg_global_request_remotetcp(iter->listenport); iter = iter->next; } - TRACE(("leave setup_remotetcp")); + TRACE(("leave setup_remotetcp")) } static int newtcpforwarded(struct Channel * channel) { @@ -179,7 +179,7 @@ static int newtcpforwarded(struct Channel * channel) { snprintf(portstring, sizeof(portstring), "%d", iter->connectport); sock = connect_remote(iter->connectaddr, portstring, 1, NULL); if (sock < 0) { - TRACE(("leave newtcpdirect: sock failed")); + TRACE(("leave newtcpdirect: sock failed")) err = SSH_OPEN_CONNECT_FAILED; goto out; } @@ -196,7 +196,7 @@ static int newtcpforwarded(struct Channel * channel) { err = SSH_OPEN_IN_PROGRESS; out: - TRACE(("leave newtcpdirect: err %d", err)); + TRACE(("leave newtcpdirect: err %d", err)) return err; } #endif /* ENABLE_CLI_REMOTETCPFWD */ diff --git a/common-algo.c b/common-algo.c index 22cdc70..1975864 100644 --- a/common-algo.c +++ b/common-algo.c @@ -202,6 +202,6 @@ void buf_put_algolist(buffer * buf, algo_type localalgos[]) { } str[pos]=0; /* Debug this */ - TRACE(("buf_put_algolist: %s", str)); + TRACE(("buf_put_algolist: %s", str)) buf_putstring(buf, str, pos); } diff --git a/common-channel.c b/common-channel.c index 1d703a2..6f73fab 100644 --- a/common-channel.c +++ b/common-channel.c @@ -81,15 +81,15 @@ void chancleanup() { unsigned int i; - TRACE(("enter chancleanup")); + TRACE(("enter chancleanup")) for (i = 0; i < ses.chansize; i++) { if (ses.channels[i] != NULL) { - TRACE(("channel %d closing", i)); + TRACE(("channel %d closing", i)) removechannel(ses.channels[i]); } } m_free(ses.channels); - TRACE(("leave chancleanup")); + TRACE(("leave chancleanup")) } /* Create a new channel entry, send a reply confirm or failure */ @@ -103,7 +103,7 @@ struct Channel* newchannel(unsigned int remotechan, struct Channel * newchan; unsigned int i, j; - TRACE(("enter newchannel")); + TRACE(("enter newchannel")) /* first see if we can use existing channels */ for (i = 0; i < ses.chansize; i++) { @@ -115,7 +115,7 @@ struct Channel* newchannel(unsigned int remotechan, /* otherwise extend the list */ if (i == ses.chansize) { if (ses.chansize >= MAX_CHANNELS) { - TRACE(("leave newchannel: max chans reached")); + TRACE(("leave newchannel: max chans reached")) return NULL; } @@ -157,7 +157,7 @@ struct Channel* newchannel(unsigned int remotechan, ses.channels[i] = newchan; ses.chancount++; - TRACE(("leave newchannel")); + TRACE(("leave newchannel")) return newchan; } @@ -246,13 +246,13 @@ void channelio(fd_set *readfd, fd_set *writefd) { /* do all the EOF/close type stuff checking for a channel */ static void checkclose(struct Channel *channel) { - TRACE(("checkclose: infd %d, outfd %d, errfd %d, sentclosed %d, recvclosed %d", + TRACE(("checkclose: infd %d, outfd %d, errfd %d, sentclosed %d, recvclosed %d", channel->infd, channel->outfd, - channel->errfd, channel->sentclosed, channel->recvclosed)); + channel->errfd, channel->sentclosed, channel->recvclosed)) TRACE(("writebuf %d extrabuf %s extrabuf %d", cbuf_getused(channel->writebuf), channel->writebuf, - channel->writebuf ? 0 : cbuf_getused(channel->extrabuf))); + channel->writebuf ? 0 : cbuf_getused(channel->extrabuf))) if (!channel->sentclosed) { @@ -289,7 +289,7 @@ static void checkclose(struct Channel *channel) { */ if (channel->recvclosed) { if (! channel->sentclosed) { - TRACE(("Sending MSG_CHANNEL_CLOSE in response to same.")); + TRACE(("Sending MSG_CHANNEL_CLOSE in response to same.")) send_msg_channel_close(channel); } removechannel(channel); @@ -306,7 +306,7 @@ static void checkinitdone(struct Channel *channel) { int val; socklen_t vallen = sizeof(val); - TRACE(("enter checkinitdone")); + TRACE(("enter checkinitdone")) if (getsockopt(channel->infd, SOL_SOCKET, SO_ERROR, &val, &vallen) || val != 0) { @@ -314,13 +314,13 @@ static void checkinitdone(struct Channel *channel) { SSH_OPEN_CONNECT_FAILED, "", ""); close(channel->infd); deletechannel(channel); - TRACE(("leave checkinitdone: fail")); + TRACE(("leave checkinitdone: fail")) } else { send_msg_channel_open_confirmation(channel, channel->recvwindow, channel->recvmaxpacket); channel->outfd = channel->infd; channel->initconn = 0; - TRACE(("leave checkinitdone: success")); + TRACE(("leave checkinitdone: success")) } } @@ -329,7 +329,7 @@ static void checkinitdone(struct Channel *channel) { /* Send the close message and set the channel as closed */ static void send_msg_channel_close(struct Channel *channel) { - TRACE(("enter send_msg_channel_close")); + TRACE(("enter send_msg_channel_close")) /* XXX server */ if (channel->type->closehandler) { channel->type->closehandler(channel); @@ -344,13 +344,13 @@ static void send_msg_channel_close(struct Channel *channel) { channel->senteof = 1; channel->sentclosed = 1; - TRACE(("leave send_msg_channel_close")); + TRACE(("leave send_msg_channel_close")) } /* call this when trans/eof channels are closed */ static void send_msg_channel_eof(struct Channel *channel) { - TRACE(("enter send_msg_channel_eof")); + TRACE(("enter send_msg_channel_eof")) CHECKCLEARTOWRITE(); buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_EOF); @@ -360,7 +360,7 @@ static void send_msg_channel_eof(struct Channel *channel) { channel->senteof = 1; - TRACE(("leave send_msg_channel_eof")); + TRACE(("leave send_msg_channel_eof")) } /* Called to write data out to the local side of the channel. @@ -370,7 +370,7 @@ static void writechannel(struct Channel* channel, int fd, circbuffer *cbuf) { int len, maxlen; - TRACE(("enter writechannel")); + TRACE(("enter writechannel")) maxlen = cbuf_readlen(cbuf); @@ -382,7 +382,7 @@ static void writechannel(struct Channel* channel, int fd, circbuffer *cbuf) { * that's a nasty failure too */ closeinfd(channel); } - TRACE(("leave writechannel: len <= 0")); + TRACE(("leave writechannel: len <= 0")) return; } @@ -392,7 +392,7 @@ static void writechannel(struct Channel* channel, int fd, circbuffer *cbuf) { if (fd == channel->infd && len == maxlen && channel->recveof) { /* Check if we're closing up */ closeinfd(channel); - TRACE(("leave writechannel: recveof set")); + TRACE(("leave writechannel: recveof set")) return; } @@ -410,7 +410,7 @@ static void writechannel(struct Channel* channel, int fd, circbuffer *cbuf) { channel->recvwindow <= cbuf_getavail(channel->extrabuf)); - TRACE(("leave writechannel")); + TRACE(("leave writechannel")) } /* Set the file descriptors for the main select in session.c @@ -444,7 +444,7 @@ void setchannelfds(fd_set *readfd, fd_set *writefd) { TRACE(("infd = %d, outfd %d, errfd %d, bufused %d", channel->infd, channel->outfd, channel->errfd, - cbuf_getused(channel->writebuf) )); + cbuf_getused(channel->writebuf) )) if (channel->infd >= 0 && channel->infd != channel->outfd) { FD_SET(channel->infd, readfd); } @@ -477,7 +477,7 @@ void recv_msg_channel_eof() { unsigned int chan; struct Channel * channel; - TRACE(("enter recv_msg_channel_eof")); + TRACE(("enter recv_msg_channel_eof")) chan = buf_getint(ses.payload); channel = getchannel(chan); @@ -493,7 +493,7 @@ void recv_msg_channel_eof() { closeinfd(channel); } - TRACE(("leave recv_msg_channel_eof")); + TRACE(("leave recv_msg_channel_eof")) } @@ -503,10 +503,10 @@ void recv_msg_channel_close() { unsigned int chan; struct Channel * channel; - TRACE(("enter recv_msg_channel_close")); + TRACE(("enter recv_msg_channel_close")) chan = buf_getint(ses.payload); - TRACE(("close channel = %d", chan)); + TRACE(("close channel = %d", chan)) channel = getchannel(chan); if (channel == NULL) { @@ -521,15 +521,15 @@ void recv_msg_channel_close() { removechannel(channel); } - TRACE(("leave recv_msg_channel_close")); + TRACE(("leave recv_msg_channel_close")) } /* Remove a channel entry, this is only executed after both sides have sent * channel close */ static void removechannel(struct Channel * channel) { - TRACE(("enter removechannel")); - TRACE(("channel index is %d", channel->index)); + TRACE(("enter removechannel")) + TRACE(("channel index is %d", channel->index)) cbuf_free(channel->writebuf); channel->writebuf = NULL; @@ -550,7 +550,7 @@ static void removechannel(struct Channel * channel) { deletechannel(channel); - TRACE(("leave removechannel")); + TRACE(("leave removechannel")) } /* Remove a channel entry */ @@ -570,7 +570,7 @@ void recv_msg_channel_request() { unsigned int chan; struct Channel *channel; - TRACE(("enter recv_msg_channel_request")); + TRACE(("enter recv_msg_channel_request")) chan = buf_getint(ses.payload); channel = getchannel(chan); @@ -586,7 +586,7 @@ void recv_msg_channel_request() { send_msg_channel_failure(channel); } - TRACE(("leave recv_msg_channel_request")); + TRACE(("leave recv_msg_channel_request")) } @@ -603,8 +603,8 @@ static void send_msg_channel_data(struct Channel *channel, int isextended, unsigned int maxlen; int fd; -/* TRACE(("enter send_msg_channel_data")); - TRACE(("extended = %d type = %d", isextended, exttype));*/ +/* TRACE(("enter send_msg_channel_data")) + TRACE(("extended = %d type = %d", isextended, exttype))*/ CHECKCLEARTOWRITE(); @@ -623,14 +623,14 @@ static void send_msg_channel_data(struct Channel *channel, int isextended, maxlen = MIN(maxlen, ses.writepayload->size - 1 - 4 - 4 - (isextended ? 4 : 0)); if (maxlen == 0) { - TRACE(("leave send_msg_channel_data: no window")); + TRACE(("leave send_msg_channel_data: no window")) return; /* the data will get written later */ } /* read the data */ - TRACE(("maxlen %d", maxlen)); + TRACE(("maxlen %d", maxlen)) buf = buf_new(maxlen); - TRACE(("buf pos %d data %x", buf->pos, buf->data)); + TRACE(("buf pos %d data %x", buf->pos, buf->data)) len = read(fd, buf_getwriteptr(buf, maxlen), maxlen); if (len <= 0) { /* on error/eof, send eof */ @@ -660,7 +660,7 @@ static void send_msg_channel_data(struct Channel *channel, int isextended, channel->transwindow -= len; encrypt_packet(); - TRACE(("leave send_msg_channel_data")); + TRACE(("leave send_msg_channel_data")) } /* We receive channel data */ @@ -689,7 +689,7 @@ void common_recv_msg_channel_data(struct Channel *channel, int fd, unsigned int buflen; unsigned int len; - TRACE(("enter recv_msg_channel_data")); + TRACE(("enter recv_msg_channel_data")) if (channel->recveof) { dropbear_exit("received data after eof"); @@ -730,7 +730,7 @@ void common_recv_msg_channel_data(struct Channel *channel, int fd, channel->recvwindow -= datalen; assert(channel->recvwindow <= RECV_MAXWINDOW); - TRACE(("leave recv_msg_channel_data")); + TRACE(("leave recv_msg_channel_data")) } /* Increment the outgoing data window for a channel - the remote end limits @@ -750,7 +750,7 @@ void recv_msg_channel_window_adjust() { } incr = buf_getint(ses.payload); - TRACE(("received window increment %d", incr)); + TRACE(("received window increment %d", incr)) incr = MIN(incr, MAX_TRANS_WIN_INCR); channel->transwindow += incr; @@ -763,7 +763,7 @@ void recv_msg_channel_window_adjust() { static void send_msg_channel_window_adjust(struct Channel* channel, unsigned int incr) { - TRACE(("sending window adjust %d", incr)); + TRACE(("sending window adjust %d", incr)) CHECKCLEARTOWRITE(); buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_WINDOW_ADJUST); @@ -787,7 +787,7 @@ void recv_msg_channel_open() { int ret; - TRACE(("enter recv_msg_channel_open")); + TRACE(("enter recv_msg_channel_open")) /* get the packet contents */ type = buf_getstring(ses.payload, &typelen); @@ -815,17 +815,17 @@ void recv_msg_channel_open() { } if (chantype == NULL) { - TRACE(("No matching type for '%s'", type)); + TRACE(("No matching type for '%s'", type)) goto failure; } - TRACE(("matched type '%s'", type)); + TRACE(("matched type '%s'", type)) /* create the channel */ channel = newchannel(remotechan, chantype, transwindow, transmaxpacket); if (channel == NULL) { - TRACE(("newchannel returned NULL")); + TRACE(("newchannel returned NULL")) goto failure; } @@ -838,7 +838,7 @@ void recv_msg_channel_open() { } errtype = ret; deletechannel(channel); - TRACE(("inithandler returned failure %d", ret)); + TRACE(("inithandler returned failure %d", ret)) goto failure; } } @@ -849,39 +849,39 @@ void recv_msg_channel_open() { goto cleanup; failure: - TRACE(("recv_msg_channel_open failure")); + TRACE(("recv_msg_channel_open failure")) send_msg_channel_open_failure(remotechan, errtype, "", ""); cleanup: m_free(type); - TRACE(("leave recv_msg_channel_open")); + TRACE(("leave recv_msg_channel_open")) } /* Send a failure message */ void send_msg_channel_failure(struct Channel *channel) { - TRACE(("enter send_msg_channel_failure")); + TRACE(("enter send_msg_channel_failure")) CHECKCLEARTOWRITE(); buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_FAILURE); buf_putint(ses.writepayload, channel->remotechan); encrypt_packet(); - TRACE(("leave send_msg_channel_failure")); + TRACE(("leave send_msg_channel_failure")) } /* Send a success message */ void send_msg_channel_success(struct Channel *channel) { - TRACE(("enter send_msg_channel_success")); + TRACE(("enter send_msg_channel_success")) CHECKCLEARTOWRITE(); buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_SUCCESS); buf_putint(ses.writepayload, channel->remotechan); encrypt_packet(); - TRACE(("leave send_msg_channel_success")); + TRACE(("leave send_msg_channel_success")) } /* Send a channel open failure message, with a corresponding reason @@ -889,7 +889,7 @@ void send_msg_channel_success(struct Channel *channel) { static void send_msg_channel_open_failure(unsigned int remotechan, int reason, const unsigned char *text, const unsigned char *lang) { - TRACE(("enter send_msg_channel_open_failure")); + TRACE(("enter send_msg_channel_open_failure")) CHECKCLEARTOWRITE(); buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_OPEN_FAILURE); @@ -899,7 +899,7 @@ static void send_msg_channel_open_failure(unsigned int remotechan, buf_putstring(ses.writepayload, lang, strlen((char*)lang)); encrypt_packet(); - TRACE(("leave send_msg_channel_open_failure")); + TRACE(("leave send_msg_channel_open_failure")) } /* Confirm a channel open, and let the remote end know what number we've @@ -908,7 +908,7 @@ static void send_msg_channel_open_confirmation(struct Channel* channel, unsigned int recvwindow, unsigned int recvmaxpacket) { - TRACE(("enter send_msg_channel_open_confirmation")); + TRACE(("enter send_msg_channel_open_confirmation")) CHECKCLEARTOWRITE(); buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_OPEN_CONFIRMATION); @@ -918,7 +918,7 @@ static void send_msg_channel_open_confirmation(struct Channel* channel, buf_putint(ses.writepayload, recvmaxpacket); encrypt_packet(); - TRACE(("leave send_msg_channel_open_confirmation")); + TRACE(("leave send_msg_channel_open_confirmation")) } #if defined(USING_LISTENERS) || defined(DROPBEAR_CLIENT) @@ -931,10 +931,10 @@ int send_msg_channel_open_init(int fd, const struct ChanType *type) { struct Channel* chan; - TRACE(("enter send_msg_channel_open_init()")); + TRACE(("enter send_msg_channel_open_init()")) chan = newchannel(0, type, 0, 0); if (!chan) { - TRACE(("leave send_msg_channel_open_init() - FAILED in newchannel()")); + TRACE(("leave send_msg_channel_open_init() - FAILED in newchannel()")) return DROPBEAR_FAILURE; } @@ -953,7 +953,7 @@ int send_msg_channel_open_init(int fd, const struct ChanType *type) { buf_putint(ses.writepayload, RECV_MAXWINDOW); buf_putint(ses.writepayload, RECV_MAXPACKET); - TRACE(("leave send_msg_channel_open_init()")); + TRACE(("leave send_msg_channel_open_init()")) return DROPBEAR_SUCCESS; } @@ -965,7 +965,7 @@ void recv_msg_channel_open_confirmation() { struct Channel * channel; int ret; - TRACE(("enter recv_msg_channel_open_confirmation")); + TRACE(("enter recv_msg_channel_open_confirmation")) chan = buf_getint(ses.payload); channel = getchannel(chan); @@ -977,19 +977,19 @@ void recv_msg_channel_open_confirmation() { channel->transwindow = buf_getint(ses.payload); channel->transmaxpacket = buf_getint(ses.payload); - TRACE(("new chan remote %d localho %d", channel->remotechan, chan)); + TRACE(("new chan remote %d localho %d", channel->remotechan, chan)) /* Run the inithandler callback */ if (channel->type->inithandler) { ret = channel->type->inithandler(channel); if (ret > 0) { removechannel(channel); - TRACE(("inithandler returned failure %d", ret)); + TRACE(("inithandler returned failure %d", ret)) } } - TRACE(("leave recv_msg_channel_open_confirmation")); + TRACE(("leave recv_msg_channel_open_confirmation")) } /* Notification that our channel open request failed */ @@ -1013,17 +1013,17 @@ static void closeoutfd(struct Channel * channel, int fd) { /* don't close it if it is the same as infd, * unless infd is already set -1 */ - TRACE(("enter closeoutfd")); + TRACE(("enter closeoutfd")) closechanfd(channel, fd, 0); - TRACE(("leave closeoutfd")); + TRACE(("leave closeoutfd")) } /* close a stdin fd */ static void closeinfd(struct Channel * channel) { - TRACE(("enter closeinfd")); + TRACE(("enter closeinfd")) closechanfd(channel, channel->infd, 1); - TRACE(("leave closeinfd")); + TRACE(("leave closeinfd")) } /* close a fd, how is 0 for stdout/stderr, 1 for stdin */ diff --git a/common-kex.c b/common-kex.c index 38ce090..97e341d 100644 --- a/common-kex.c +++ b/common-kex.c @@ -114,8 +114,8 @@ void send_msg_kexinit() { encrypt_packet(); ses.dataallowed = 0; /* don't send other packets during kex */ - TRACE(("DATAALLOWED=0")); - TRACE(("-> KEXINIT")); + TRACE(("DATAALLOWED=0")) + TRACE(("-> KEXINIT")) ses.kexstate.sentkexinit = 1; } @@ -128,7 +128,7 @@ void send_msg_kexinit() { /* Bring new keys into use after a key exchange, and let the client know*/ void send_msg_newkeys() { - TRACE(("enter send_msg_newkeys")); + TRACE(("enter send_msg_newkeys")) /* generate the kexinit request */ CHECKCLEARTOWRITE(); @@ -138,42 +138,42 @@ void send_msg_newkeys() { /* set up our state */ if (ses.kexstate.recvnewkeys) { - TRACE(("while RECVNEWKEYS=1")); + TRACE(("while RECVNEWKEYS=1")) gen_new_keys(); kexinitialise(); /* we've finished with this kex */ - TRACE((" -> DATAALLOWED=1")); + TRACE((" -> DATAALLOWED=1")) ses.dataallowed = 1; /* we can send other packets again now */ ses.kexstate.donefirstkex = 1; } else { ses.kexstate.sentnewkeys = 1; - TRACE(("SENTNEWKEYS=1")); + TRACE(("SENTNEWKEYS=1")) } - TRACE(("-> MSG_NEWKEYS")); - TRACE(("leave send_msg_newkeys")); + TRACE(("-> MSG_NEWKEYS")) + TRACE(("leave send_msg_newkeys")) } /* Bring the new keys into use after a key exchange */ void recv_msg_newkeys() { - TRACE(("<- MSG_NEWKEYS")); - TRACE(("enter recv_msg_newkeys")); + TRACE(("<- MSG_NEWKEYS")) + TRACE(("enter recv_msg_newkeys")) /* simply check if we've sent SSH_MSG_NEWKEYS, and if so, * switch to the new keys */ if (ses.kexstate.sentnewkeys) { - TRACE(("while SENTNEWKEYS=1")); + TRACE(("while SENTNEWKEYS=1")) gen_new_keys(); kexinitialise(); /* we've finished with this kex */ - TRACE((" -> DATAALLOWED=1")); + TRACE((" -> DATAALLOWED=1")) ses.dataallowed = 1; /* we can send other packets again now */ ses.kexstate.donefirstkex = 1; } else { - TRACE(("RECVNEWKEYS=1")); + TRACE(("RECVNEWKEYS=1")) ses.kexstate.recvnewkeys = 1; } - TRACE(("leave recv_msg_newkeys")); + TRACE(("leave recv_msg_newkeys")) } @@ -189,7 +189,7 @@ static void kexinitialise() { struct timeval tv; - TRACE(("kexinitialise()")); + TRACE(("kexinitialise()")) /* sent/recv'd MSG_KEXINIT */ ses.kexstate.sentkexinit = 0; @@ -262,7 +262,7 @@ void gen_new_keys() { unsigned int C2S_keysize, S2C_keysize; char mactransletter, macrecvletter; /* Client or server specific */ - TRACE(("enter gen_new_keys")); + TRACE(("enter gen_new_keys")) /* the dh_K and hash are the start of all hashes, we make use of that */ sha1_init(&hs); @@ -329,7 +329,7 @@ void gen_new_keys() { ses.keys = ses.newkeys; ses.newkeys = NULL; - TRACE(("leave gen_new_keys")); + TRACE(("leave gen_new_keys")) } #ifndef DISABLE_ZLIB @@ -393,8 +393,8 @@ static void gen_new_zstreams() { /* Belongs in common_kex.c where it should be moved after review */ void recv_msg_kexinit() { - TRACE(("<- KEXINIT")); - TRACE(("enter recv_msg_kexinit")); + TRACE(("<- KEXINIT")) + TRACE(("enter recv_msg_kexinit")) /* start the kex hash */ ses.kexhashbuf = buf_new(MAX_KEXHASHBUF); @@ -402,7 +402,7 @@ void recv_msg_kexinit() { if (!ses.kexstate.sentkexinit) { /* we need to send a kex packet */ send_msg_kexinit(); - TRACE(("continue recv_msg_kexinit: sent kexinit")); + TRACE(("continue recv_msg_kexinit: sent kexinit")) } @@ -459,7 +459,7 @@ void recv_msg_kexinit() { ses.kexstate.recvkexinit = 1; // ses.expecting = 0; // client matt - TRACE(("leave recv_msg_kexinit")); + TRACE(("leave recv_msg_kexinit")) } /* Initialises and generate one side of the diffie-hellman key exchange values. @@ -473,7 +473,7 @@ void gen_kexdh_vals(mp_int *dh_pub, mp_int *dh_priv) { unsigned char randbuf[DH_P_LEN]; int dh_q_len; - TRACE(("enter send_msg_kexdh_reply")); + TRACE(("enter send_msg_kexdh_reply")) m_mp_init_multi(&dh_g, &dh_p, &dh_q, NULL); @@ -619,7 +619,7 @@ static void read_kex_algos() { erralgo = "kex"; goto error; } - TRACE(("kex algo %s", algo->name)); + TRACE(("kex algo %s", algo->name)) ses.newkeys->algo_kex = algo->val; /* server_host_key_algorithms */ @@ -629,7 +629,7 @@ static void read_kex_algos() { erralgo = "hostkey"; goto error; } - TRACE(("hostkey algo %s", algo->name)); + TRACE(("hostkey algo %s", algo->name)) ses.newkeys->algo_hostkey = algo->val; /* encryption_algorithms_client_to_server */ @@ -638,7 +638,7 @@ static void read_kex_algos() { erralgo = "enc c->s"; goto error; } - TRACE(("c2s is %s", c2s_cipher_algo->name)); + TRACE(("c2s is %s", c2s_cipher_algo->name)) /* encryption_algorithms_server_to_client */ s2c_cipher_algo = ses.buf_match_algo(ses.payload, sshciphers, &goodguess); @@ -646,7 +646,7 @@ static void read_kex_algos() { erralgo = "enc s->c"; goto error; } - TRACE(("s2c is %s", s2c_cipher_algo->name)); + TRACE(("s2c is %s", s2c_cipher_algo->name)) /* mac_algorithms_client_to_server */ c2s_hash_algo = ses.buf_match_algo(ses.payload, sshhashes, &goodguess); @@ -717,12 +717,12 @@ static void read_kex_algos() { ses.newkeys->trans_algo_comp = s2c_comp_algo->val; } - TRACE(("enc algo recv %s", algo->name)); - TRACE(("enc algo trans %s", algo->name)); - TRACE(("mac algo recv %s", algo->name)); - TRACE(("mac algo trans %s", algo->name)); - TRACE(("comp algo recv %s", algo->name)); - TRACE(("comp algo trans %s", algo->name)); + TRACE(("enc algo recv %s", algo->name)) + TRACE(("enc algo trans %s", algo->name)) + TRACE(("mac algo recv %s", algo->name)) + TRACE(("mac algo trans %s", algo->name)) + TRACE(("comp algo recv %s", algo->name)) + TRACE(("comp algo trans %s", algo->name)) /* reserved for future extensions */ buf_getint(ses.payload); diff --git a/common-session.c b/common-session.c index 2914069..06cdbd1 100644 --- a/common-session.c +++ b/common-session.c @@ -52,7 +52,7 @@ int exitflag = 0; /* GLOBAL */ /* called only at the start of a session, set up initial state */ void common_session_init(int sock, char* remotehost) { - TRACE(("enter session_init")); + TRACE(("enter session_init")) ses.remotehost = remotehost; @@ -110,7 +110,7 @@ void common_session_init(int sock, char* remotehost) { ses.allowprivport = 0; - TRACE(("leave session_init")); + TRACE(("leave session_init")) } void session_loop(void(*loophandler)()) { @@ -162,7 +162,7 @@ void session_loop(void(*loophandler)()) { if (val == 0) { /* timeout */ - TRACE(("select timeout")); + TRACE(("select timeout")) continue; } @@ -201,11 +201,11 @@ void session_loop(void(*loophandler)()) { /* clean up a session on exit */ void common_session_cleanup() { - TRACE(("enter session_cleanup")); + TRACE(("enter session_cleanup")) /* we can't cleanup if we don't know the session state */ if (!sessinitdone) { - TRACE(("leave session_cleanup: !sessinitdone")); + TRACE(("leave session_cleanup: !sessinitdone")) return; } @@ -215,7 +215,7 @@ void common_session_cleanup() { chancleanup(); - TRACE(("leave session_cleanup")); + TRACE(("leave session_cleanup")) } @@ -252,7 +252,7 @@ void session_identification() { } if (!done) { - TRACE(("err: %s for '%s'\n", strerror(errno), linebuf)); + TRACE(("err: %s for '%s'\n", strerror(errno), linebuf)) dropbear_exit("Failed to get remote version"); } else { /* linebuf is already null terminated */ @@ -260,7 +260,7 @@ void session_identification() { memcpy(ses.remoteident, linebuf, len); } - TRACE(("remoteident: %s", ses.remoteident)); + TRACE(("remoteident: %s", ses.remoteident)) } @@ -274,7 +274,7 @@ static int ident_readln(int fd, char* buf, int count) { fd_set fds; struct timeval timeout; - TRACE(("enter ident_readln")); + TRACE(("enter ident_readln")) if (count < 1) { return -1; @@ -295,7 +295,7 @@ static int ident_readln(int fd, char* buf, int count) { if (errno == EINTR) { continue; } - TRACE(("leave ident_readln: select error")); + TRACE(("leave ident_readln: select error")) return -1; } @@ -313,12 +313,12 @@ static int ident_readln(int fd, char* buf, int count) { if (errno == EINTR) { continue; /* not a real error */ } - TRACE(("leave ident_readln: read error")); + TRACE(("leave ident_readln: read error")) return -1; } if (num == 0) { /* EOF */ - TRACE(("leave ident_readln: EOF")); + TRACE(("leave ident_readln: EOF")) return -1; } if (in == '\n') { @@ -334,7 +334,7 @@ static int ident_readln(int fd, char* buf, int count) { } buf[pos] = '\0'; - TRACE(("leave ident_readln: return %d", pos+1)); + TRACE(("leave ident_readln: return %d", pos+1)) return pos+1; } @@ -363,7 +363,7 @@ static void checktimeouts() { if (!ses.kexstate.sentkexinit && (secs - ses.kexstate.lastkextime >= KEX_REKEY_TIMEOUT || ses.kexstate.datarecv+ses.kexstate.datatrans >= KEX_REKEY_DATA)){ - TRACE(("rekeying after timeout or max data reached")); + TRACE(("rekeying after timeout or max data reached")) send_msg_kexinit(); } } diff --git a/dbutil.c b/dbutil.c index c77386f..3ead979 100644 --- a/dbutil.c +++ b/dbutil.c @@ -164,17 +164,17 @@ int dropbear_listen(const char* address, const char* port, int val; int sock; - TRACE(("enter dropbear_listen")); + TRACE(("enter dropbear_listen")) memset(&hints, 0, sizeof(hints)); hints.ai_family = AF_UNSPEC; /* TODO: let them flag v4 only etc */ hints.ai_socktype = SOCK_STREAM; if (address && address[0] == '\0') { - TRACE(("dropbear_listen: local loopback")); + TRACE(("dropbear_listen: local loopback")) address = NULL; } else { - TRACE(("dropbear_listen: not local loopback")); + TRACE(("dropbear_listen: not local loopback")) hints.ai_flags = AI_PASSIVE; } err = getaddrinfo(address, port, &hints, &res0); @@ -186,7 +186,7 @@ int dropbear_listen(const char* address, const char* port, *errstring = (char*)m_malloc(len); snprintf(*errstring, len, "Error resolving: %s", gai_strerror(err)); } - TRACE(("leave dropbear_listen: failed resolving")); + TRACE(("leave dropbear_listen: failed resolving")) return -1; } @@ -203,7 +203,7 @@ int dropbear_listen(const char* address, const char* port, if (sock < 0) { err = errno; - TRACE(("socket() failed")); + TRACE(("socket() failed")) continue; } @@ -221,14 +221,14 @@ int dropbear_listen(const char* address, const char* port, if (bind(sock, res->ai_addr, res->ai_addrlen) < 0) { err = errno; close(sock); - TRACE(("bind(%s) failed", port)); + TRACE(("bind(%s) failed", port)) continue; } if (listen(sock, 20) < 0) { err = errno; close(sock); - TRACE(("listen() failed")); + TRACE(("listen() failed")) continue; } @@ -243,12 +243,12 @@ int dropbear_listen(const char* address, const char* port, len = 20 + strlen(strerror(err)); *errstring = (char*)m_malloc(len); snprintf(*errstring, len, "Error listening: %s", strerror(err)); - TRACE(("leave dropbear_listen: failure, %s", strerror(err))); + TRACE(("leave dropbear_listen: failure, %s", strerror(err))) return -1; } } - TRACE(("leave dropbear_listen: success, %d socks bound", nsock)); + TRACE(("leave dropbear_listen: success, %d socks bound", nsock)) return nsock; } @@ -264,7 +264,7 @@ int connect_remote(const char* remotehost, const char* remoteport, int sock; int err; - TRACE(("enter connect_remote")); + TRACE(("enter connect_remote")) if (errstring != NULL) { *errstring = NULL; @@ -282,7 +282,7 @@ int connect_remote(const char* remotehost, const char* remoteport, *errstring = (char*)m_malloc(len); snprintf(*errstring, len, "Error resolving: %s", gai_strerror(err)); } - TRACE(("Error resolving: %s", gai_strerror(err))); + TRACE(("Error resolving: %s", gai_strerror(err))) return -1; } @@ -303,14 +303,14 @@ int connect_remote(const char* remotehost, const char* remoteport, if (errstring != NULL && *errstring == NULL) { *errstring = m_strdup("Failed non-blocking"); } - TRACE(("Failed non-blocking: %s", strerror(errno))); + TRACE(("Failed non-blocking: %s", strerror(errno))) continue; } } if (connect(sock, res->ai_addr, res->ai_addrlen) < 0) { if (errno == EINPROGRESS && nonblocking) { - TRACE(("Connect in progress")); + TRACE(("Connect in progress")) break; } else { err = errno; @@ -331,7 +331,7 @@ int connect_remote(const char* remotehost, const char* remoteport, *errstring = (char*)m_malloc(len); snprintf(*errstring, len, "Error connecting: %s", strerror(err)); } - TRACE(("Error connecting: %s", strerror(err))); + TRACE(("Error connecting: %s", strerror(err))) } else { /* Success */ /* (err is used as a dummy var here) */ @@ -343,7 +343,7 @@ int connect_remote(const char* remotehost, const char* remoteport, m_free(*errstring); } - TRACE(("leave connect_remote: sock %d\n", sock)); + TRACE(("leave connect_remote: sock %d\n", sock)) return sock; } @@ -503,7 +503,7 @@ int buf_getline(buffer * line, FILE * authfile) { int c = EOF; - TRACE(("enter buf_getline")); + TRACE(("enter buf_getline")) buf_setpos(line, 0); buf_setlen(line, 0); @@ -518,7 +518,7 @@ int buf_getline(buffer * line, FILE * authfile) { buf_putbyte(line, (unsigned char)c); } - TRACE(("leave getauthline: line too long")); + TRACE(("leave getauthline: line too long")) /* We return success, but the line length will be zeroed - ie we just * ignore that line */ buf_setlen(line, 0); @@ -528,10 +528,10 @@ out: /* if we didn't read anything before EOF or error, exit */ if (c == EOF && line->pos == 0) { - TRACE(("leave buf_getline: failure")); + TRACE(("leave buf_getline: failure")) return DROPBEAR_FAILURE; } else { - TRACE(("leave buf_getline: success")); + TRACE(("leave buf_getline: success")) buf_setpos(line, 0); return DROPBEAR_SUCCESS; } @@ -618,10 +618,10 @@ void m_burn(void *data, unsigned int len) { void setnonblocking(int fd) { - TRACE(("setnonblocking: %d", fd)); + TRACE(("setnonblocking: %d", fd)) if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0) { dropbear_exit("Couldn't set nonblocking"); } - TRACE(("leave setnonblocking")); + TRACE(("leave setnonblocking")) } diff --git a/debug.h b/debug.h index 37f51ac..7b1e2b5 100644 --- a/debug.h +++ b/debug.h @@ -39,7 +39,7 @@ * Caution: Don't use this in an unfriendly environment (ie unfirewalled), * since the printing may not sanitise strings etc. This will add a reasonable * amount to your executable size. */ -/* #define DEBUG_TRACE */ + //#define DEBUG_TRACE /* All functions writing to the cleartext payload buffer call * CHECKCLEARTOWRITE() before writing. This is only really useful if you're @@ -60,7 +60,7 @@ /* you don't need to touch this block */ #ifdef DEBUG_TRACE -#define TRACE(X) (dropbear_trace X) +#define TRACE(X) dropbear_trace X; #else /*DEBUG_TRACE*/ #define TRACE(X) #endif /*DEBUG_TRACE*/ diff --git a/dropbearkey.c b/dropbearkey.c index 364b765..8ceefdc 100644 --- a/dropbearkey.c +++ b/dropbearkey.c @@ -166,13 +166,13 @@ int main(int argc, char ** argv) { #ifdef DROPBEAR_RSA if (strncmp(typetext, "rsa", 3) == 0) { keytype = DROPBEAR_SIGNKEY_RSA; - TRACE(("type is rsa")); + TRACE(("type is rsa")) } #endif #ifdef DROPBEAR_DSS if (strncmp(typetext, "dss", 3) == 0) { keytype = DROPBEAR_SIGNKEY_DSS; - TRACE(("type is dss")); + TRACE(("type is dss")) } #endif } diff --git a/dss.c b/dss.c index 0cb437c..6429ede 100644 --- a/dss.c +++ b/dss.c @@ -45,7 +45,7 @@ * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */ int buf_get_dss_pub_key(buffer* buf, dss_key *key) { - TRACE(("enter buf_get_dss_pub_key")); + TRACE(("enter buf_get_dss_pub_key")) assert(key != NULL); key->p = m_malloc(sizeof(mp_int)); key->q = m_malloc(sizeof(mp_int)); @@ -59,17 +59,17 @@ int buf_get_dss_pub_key(buffer* buf, dss_key *key) { || buf_getmpint(buf, key->q) == DROPBEAR_FAILURE || buf_getmpint(buf, key->g) == DROPBEAR_FAILURE || buf_getmpint(buf, key->y) == DROPBEAR_FAILURE) { - TRACE(("leave buf_get_dss_pub_key: failed reading mpints")); + TRACE(("leave buf_get_dss_pub_key: failed reading mpints")) return DROPBEAR_FAILURE; } if (mp_count_bits(key->p) < MIN_DSS_KEYLEN) { dropbear_log(LOG_WARNING, "DSS key too short"); - TRACE(("leave buf_get_dss_pub_key: short key")); + TRACE(("leave buf_get_dss_pub_key: short key")) return DROPBEAR_FAILURE; } - TRACE(("leave buf_get_dss_pub_key: success")); + TRACE(("leave buf_get_dss_pub_key: success")) return DROPBEAR_SUCCESS; } @@ -98,9 +98,9 @@ int buf_get_dss_priv_key(buffer* buf, dss_key *key) { /* Clear and free the memory used by a public or private key */ void dss_key_free(dss_key *key) { - TRACE(("enter dsa_key_free")); + TRACE(("enter dsa_key_free")) if (key == NULL) { - TRACE(("enter dsa_key_free: key == NULL")); + TRACE(("enter dsa_key_free: key == NULL")) return; } if (key->p) { @@ -124,7 +124,7 @@ void dss_key_free(dss_key *key) { m_free(key->x); } m_free(key); - TRACE(("leave dsa_key_free")); + TRACE(("leave dsa_key_free")) } /* put the dss public key into the buffer in the required format: @@ -171,7 +171,7 @@ int buf_dss_verify(buffer* buf, dss_key *key, const unsigned char* data, char * string = NULL; int stringlen; - TRACE(("enter buf_dss_verify")); + TRACE(("enter buf_dss_verify")) assert(key != NULL); m_mp_init_multi(&val1, &val2, &val3, &val4, NULL); @@ -195,7 +195,7 @@ int buf_dss_verify(buffer* buf, dss_key *key, const unsigned char* data, goto out; } if (mp_cmp(&val1, key->q) != MP_LT) { - TRACE(("verify failed, s' >= q")); + TRACE(("verify failed, s' >= q")) goto out; } /* let val2 = w = (s')^-1 mod q*/ @@ -220,7 +220,7 @@ int buf_dss_verify(buffer* buf, dss_key *key, const unsigned char* data, goto out; } if (mp_cmp(&val1, key->q) != MP_LT) { - TRACE(("verify failed, r' >= q")); + TRACE(("verify failed, r' >= q")) goto out; } /* let val4 = u2 = ((r')w) mod q */ @@ -315,7 +315,7 @@ void buf_put_dss_sign(buffer* buf, dss_key *key, const unsigned char* data, DEF_MP_INT(dss_s); hash_state hs; - TRACE(("enter buf_put_dss_sign")); + TRACE(("enter buf_put_dss_sign")) assert(key != NULL); /* hash the data */ @@ -422,7 +422,7 @@ void buf_put_dss_sign(buffer* buf, dss_key *key, const unsigned char* data, /* create the signature to return */ - TRACE(("leave buf_put_dss_sign")); + TRACE(("leave buf_put_dss_sign")) } #endif /* DROPBEAR_DSS */ diff --git a/listener.c b/listener.c index 1a6da04..dd90c6b 100644 --- a/listener.c +++ b/listener.c @@ -93,7 +93,7 @@ struct Listener* new_listener(int socks[], unsigned int nsocks, /* or create a new one */ if (i == ses.listensize) { if (ses.listensize > MAX_LISTENERS) { - TRACE(("leave newlistener: too many already")); + TRACE(("leave newlistener: too many already")) for (j = 0; j < nsocks; j++) { close(socks[i]); } @@ -115,7 +115,7 @@ struct Listener* new_listener(int socks[], unsigned int nsocks, ses.maxfd = MAX(ses.maxfd, socks[j]); } - TRACE(("new listener num %d ", i)); + TRACE(("new listener num %d ", i)) newlisten = (struct Listener*)m_malloc(sizeof(struct Listener)); newlisten->index = i; diff --git a/packet.c b/packet.c index 5e8e14d..56b31c2 100644 --- a/packet.c +++ b/packet.c @@ -52,7 +52,7 @@ void write_packet() { int len, written; buffer * writebuf = NULL; - TRACE(("enter write_packet")); + TRACE(("enter write_packet")) assert(!isempty(&ses.writequeue)); /* Get the next buffer in the queue of encrypted packets to write*/ @@ -65,7 +65,7 @@ void write_packet() { if (written < 0) { if (errno == EINTR) { - TRACE(("leave writepacket: EINTR")); + TRACE(("leave writepacket: EINTR")) return; } else { dropbear_exit("error writing"); @@ -86,7 +86,7 @@ void write_packet() { buf_incrpos(writebuf, written); } - TRACE(("leave write_packet")); + TRACE(("leave write_packet")) } /* Non-blocking function reading available portion of a packet into the @@ -98,7 +98,7 @@ void read_packet() { unsigned int maxlen; unsigned char blocksize; - TRACE(("enter read_packet")); + TRACE(("enter read_packet")) blocksize = ses.keys->recv_algo_crypt->blocksize; if (ses.readbuf == NULL || ses.readbuf->len < blocksize) { @@ -111,7 +111,7 @@ void read_packet() { /* If we don't have the length of decryptreadbuf, we didn't read * a whole blocksize and should exit */ if (ses.decryptreadbuf->len == 0) { - TRACE(("leave read_packet: packetinit done")); + TRACE(("leave read_packet: packetinit done")) return; } } @@ -128,7 +128,7 @@ void read_packet() { if (len < 0) { if (errno == EINTR || errno == EAGAIN) { - TRACE(("leave read_packet: EINTR or EAGAIN")); + TRACE(("leave read_packet: EINTR or EAGAIN")) return; } else { dropbear_exit("error reading: %s", strerror(errno)); @@ -143,7 +143,7 @@ void read_packet() { /* The main select() loop process_packet() to * handle the packet contents... */ } - TRACE(("leave read_packet")); + TRACE(("leave read_packet")) } /* Function used to read the initial portion of a packet, and determine the @@ -176,7 +176,7 @@ static void read_packet_init() { } if (len < 0) { if (errno == EINTR) { - TRACE(("leave read_packet_init: EINTR")); + TRACE(("leave read_packet_init: EINTR")) return; } dropbear_exit("error reading: %s", strerror(errno)); @@ -230,7 +230,7 @@ void decrypt_packet() { unsigned int padlen; unsigned int len; - TRACE(("enter decrypt_packet")); + TRACE(("enter decrypt_packet")) blocksize = ses.keys->recv_algo_crypt->blocksize; macsize = ses.keys->recv_algo_mac->hashsize; @@ -305,7 +305,7 @@ void decrypt_packet() { ses.recvseq++; - TRACE(("leave decrypt_packet")); + TRACE(("leave decrypt_packet")) } /* Checks the mac in hashbuf, for the data in readbuf. @@ -413,8 +413,8 @@ void encrypt_packet() { buffer * writebuf; /* the packet which will go on the wire */ buffer * clearwritebuf; /* unencrypted, possibly compressed */ - TRACE(("enter encrypt_packet()")); - TRACE(("encrypt_packet type is %d", ses.writepayload->data[0])); + TRACE(("enter encrypt_packet()")) + TRACE(("encrypt_packet type is %d", ses.writepayload->data[0])) blocksize = ses.keys->trans_algo_crypt->blocksize; macsize = ses.keys->trans_algo_mac->hashsize; @@ -514,7 +514,7 @@ void encrypt_packet() { ses.kexstate.datatrans += writebuf->len; ses.transseq++; - TRACE(("leave encrypt_packet()")); + TRACE(("leave encrypt_packet()")) } @@ -526,7 +526,7 @@ static void writemac(buffer * outputbuffer, buffer * clearwritebuf) { unsigned long hashsize; hmac_state hmac; - TRACE(("enter writemac")); + TRACE(("enter writemac")) macsize = ses.keys->trans_algo_mac->hashsize; @@ -561,7 +561,7 @@ static void writemac(buffer * outputbuffer, buffer * clearwritebuf) { } buf_incrwritepos(outputbuffer, macsize); } - TRACE(("leave writemac")); + TRACE(("leave writemac")) } #ifndef DISABLE_ZLIB @@ -572,7 +572,7 @@ static void buf_compress(buffer * dest, buffer * src, unsigned int len) { unsigned int endpos = src->pos + len; int result; - TRACE(("enter buf_compress")); + TRACE(("enter buf_compress")) while (1) { @@ -606,6 +606,6 @@ static void buf_compress(buffer * dest, buffer * src, unsigned int len) { buf_resize(dest, dest->size + ZLIB_COMPRESS_INCR); } - TRACE(("leave buf_compress")); + TRACE(("leave buf_compress")) } #endif diff --git a/process-packet.c b/process-packet.c index bdec032..07fc130 100644 --- a/process-packet.c +++ b/process-packet.c @@ -45,10 +45,10 @@ void process_packet() { unsigned char type; unsigned int i; - TRACE(("enter process_packet")); + TRACE(("enter process_packet")) type = buf_getbyte(ses.payload); - TRACE(("process_packet: packet type = %d", type)); + TRACE(("process_packet: packet type = %d", type)) ses.lastpacket = type; @@ -57,12 +57,12 @@ void process_packet() { case SSH_MSG_IGNORE: case SSH_MSG_DEBUG: - TRACE(("received SSH_MSG_IGNORE or SSH_MSG_DEBUG")); + TRACE(("received SSH_MSG_IGNORE or SSH_MSG_DEBUG")) goto out; case SSH_MSG_UNIMPLEMENTED: /* debugging XXX */ - TRACE(("SSH_MSG_UNIMPLEMENTED")); + TRACE(("SSH_MSG_UNIMPLEMENTED")) dropbear_exit("received SSH_MSG_UNIMPLEMENTED"); case SSH_MSG_DISCONNECT: @@ -87,7 +87,7 @@ void process_packet() { /* Check if we should ignore this packet. Used currently only for * KEX code, with first_kex_packet_follows */ if (ses.ignorenext) { - TRACE(("Ignoring packet, type = %d", type)); + TRACE(("Ignoring packet, type = %d", type)) ses.ignorenext = 0; goto out; } @@ -115,7 +115,7 @@ void process_packet() { /* TODO do something more here? */ - TRACE(("preauth unknown packet")); + TRACE(("preauth unknown packet")) recv_unimplemented(); out: @@ -123,7 +123,7 @@ out: buf_free(ses.payload); ses.payload = NULL; - TRACE(("leave process_packet")); + TRACE(("leave process_packet")) } diff --git a/queue.c b/queue.c index a1352dc..caf6145 100644 --- a/queue.c +++ b/queue.c @@ -52,7 +52,7 @@ void* dequeue(struct Queue* queue) { } else { queue->head = NULL; queue->tail = NULL; - TRACE(("empty queue dequeing")); + TRACE(("empty queue dequeing")) } m_free(oldhead); @@ -70,7 +70,7 @@ void enqueue(struct Queue* queue, void* item) { struct Link* newlink; - TRACE(("enter enqueue")); + TRACE(("enter enqueue")) newlink = (struct Link*)m_malloc(sizeof(struct Link)); newlink->item = item; @@ -85,5 +85,5 @@ void enqueue(struct Queue* queue, void* item) { queue->head = newlink; } queue->count++; - TRACE(("leave enqueue")); + TRACE(("leave enqueue")) } diff --git a/rsa.c b/rsa.c index 7e891e0..1ac0357 100644 --- a/rsa.c +++ b/rsa.c @@ -47,7 +47,7 @@ static mp_int * rsa_pad_em(rsa_key * key, * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */ int buf_get_rsa_pub_key(buffer* buf, rsa_key *key) { - TRACE(("enter buf_get_rsa_pub_key")); + TRACE(("enter buf_get_rsa_pub_key")) assert(key != NULL); key->e = m_malloc(sizeof(mp_int)); key->n = m_malloc(sizeof(mp_int)); @@ -60,7 +60,7 @@ int buf_get_rsa_pub_key(buffer* buf, rsa_key *key) { if (buf_getmpint(buf, key->e) == DROPBEAR_FAILURE || buf_getmpint(buf, key->n) == DROPBEAR_FAILURE) { - TRACE(("leave buf_get_rsa_pub_key: failure")); + TRACE(("leave buf_get_rsa_pub_key: failure")) return DROPBEAR_FAILURE; } @@ -69,7 +69,7 @@ int buf_get_rsa_pub_key(buffer* buf, rsa_key *key) { return DROPBEAR_FAILURE; } - TRACE(("leave buf_get_rsa_pub_key: success")); + TRACE(("leave buf_get_rsa_pub_key: success")) return DROPBEAR_SUCCESS; } @@ -81,17 +81,17 @@ int buf_get_rsa_priv_key(buffer* buf, rsa_key *key) { assert(key != NULL); - TRACE(("enter buf_get_rsa_priv_key")); + TRACE(("enter buf_get_rsa_priv_key")) if (buf_get_rsa_pub_key(buf, key) == DROPBEAR_FAILURE) { - TRACE(("leave buf_get_rsa_priv_key: pub: ret == DROPBEAR_FAILURE")); + TRACE(("leave buf_get_rsa_priv_key: pub: ret == DROPBEAR_FAILURE")) return DROPBEAR_FAILURE; } key->d = m_malloc(sizeof(mp_int)); m_mp_init(key->d); if (buf_getmpint(buf, key->d) == DROPBEAR_FAILURE) { - TRACE(("leave buf_get_rsa_priv_key: d: ret == DROPBEAR_FAILURE")); + TRACE(("leave buf_get_rsa_priv_key: d: ret == DROPBEAR_FAILURE")) return DROPBEAR_FAILURE; } @@ -105,17 +105,17 @@ int buf_get_rsa_priv_key(buffer* buf, rsa_key *key) { m_mp_init_multi(key->p, key->q, NULL); if (buf_getmpint(buf, key->p) == DROPBEAR_FAILURE) { - TRACE(("leave buf_get_rsa_priv_key: p: ret == DROPBEAR_FAILURE")); + TRACE(("leave buf_get_rsa_priv_key: p: ret == DROPBEAR_FAILURE")) return DROPBEAR_FAILURE; } if (buf_getmpint(buf, key->q) == DROPBEAR_FAILURE) { - TRACE(("leave buf_get_rsa_priv_key: q: ret == DROPBEAR_FAILURE")); + TRACE(("leave buf_get_rsa_priv_key: q: ret == DROPBEAR_FAILURE")) return DROPBEAR_FAILURE; } } - TRACE(("leave buf_get_rsa_priv_key")); + TRACE(("leave buf_get_rsa_priv_key")) return DROPBEAR_SUCCESS; } @@ -123,10 +123,10 @@ int buf_get_rsa_priv_key(buffer* buf, rsa_key *key) { /* Clear and free the memory used by a public or private key */ void rsa_key_free(rsa_key *key) { - TRACE(("enter rsa_key_free")); + TRACE(("enter rsa_key_free")) if (key == NULL) { - TRACE(("leave rsa_key_free: key == NULL")); + TRACE(("leave rsa_key_free: key == NULL")) return; } if (key->d) { @@ -150,7 +150,7 @@ void rsa_key_free(rsa_key *key) { m_free(key->q); } m_free(key); - TRACE(("leave rsa_key_free")); + TRACE(("leave rsa_key_free")) } /* Put the public rsa key into the buffer in the required format: @@ -161,21 +161,21 @@ void rsa_key_free(rsa_key *key) { */ void buf_put_rsa_pub_key(buffer* buf, rsa_key *key) { - TRACE(("enter buf_put_rsa_pub_key")); + TRACE(("enter buf_put_rsa_pub_key")) assert(key != NULL); buf_putstring(buf, SSH_SIGNKEY_RSA, SSH_SIGNKEY_RSA_LEN); buf_putmpint(buf, key->e); buf_putmpint(buf, key->n); - TRACE(("leave buf_put_rsa_pub_key")); + TRACE(("leave buf_put_rsa_pub_key")) } /* Same as buf_put_rsa_pub_key, but with the private "x" key appended */ void buf_put_rsa_priv_key(buffer* buf, rsa_key *key) { - TRACE(("enter buf_put_rsa_priv_key")); + TRACE(("enter buf_put_rsa_priv_key")) assert(key != NULL); buf_put_rsa_pub_key(buf, key); @@ -190,7 +190,7 @@ void buf_put_rsa_priv_key(buffer* buf, rsa_key *key) { } - TRACE(("leave buf_put_rsa_priv_key")); + TRACE(("leave buf_put_rsa_priv_key")) } @@ -206,7 +206,7 @@ int buf_rsa_verify(buffer * buf, rsa_key *key, const unsigned char* data, mp_int *rsa_em = NULL; int ret = DROPBEAR_FAILURE; - TRACE(("enter buf_rsa_verify")); + TRACE(("enter buf_rsa_verify")) assert(key != NULL); @@ -214,19 +214,19 @@ int buf_rsa_verify(buffer * buf, rsa_key *key, const unsigned char* data, slen = buf_getint(buf); if (slen != (unsigned int)mp_unsigned_bin_size(key->n)) { - TRACE(("bad size")); + TRACE(("bad size")) goto out; } if (mp_read_unsigned_bin(&rsa_s, buf_getptr(buf, buf->len - buf->pos), buf->len - buf->pos) != MP_OKAY) { - TRACE(("failed reading rsa_s")); + TRACE(("failed reading rsa_s")) goto out; } /* check that s <= n-1 */ if (mp_cmp(&rsa_s, key->n) != MP_LT) { - TRACE(("s > n-1")); + TRACE(("s > n-1")) goto out; } @@ -234,13 +234,13 @@ int buf_rsa_verify(buffer * buf, rsa_key *key, const unsigned char* data, rsa_em = rsa_pad_em(key, data, len); if (mp_exptmod(&rsa_s, key->e, key->n, &rsa_mdash) != MP_OKAY) { - TRACE(("failed exptmod rsa_s")); + TRACE(("failed exptmod rsa_s")) goto out; } if (mp_cmp(rsa_em, &rsa_mdash) == MP_EQ) { /* signature is valid */ - TRACE(("success!")); + TRACE(("success!")) ret = DROPBEAR_SUCCESS; } @@ -250,7 +250,7 @@ out: m_free(rsa_em); } mp_clear_multi(&rsa_mdash, &rsa_s, NULL); - TRACE(("leave buf_rsa_verify: ret %d", ret)); + TRACE(("leave buf_rsa_verify: ret %d", ret)) return ret; } @@ -266,7 +266,7 @@ void buf_put_rsa_sign(buffer* buf, rsa_key *key, const unsigned char* data, DEF_MP_INT(rsa_s); mp_int *rsa_em = NULL; - TRACE(("enter buf_put_rsa_sign")); + TRACE(("enter buf_put_rsa_sign")) assert(key != NULL); rsa_em = rsa_pad_em(key, data, len); @@ -306,7 +306,7 @@ void buf_put_rsa_sign(buffer* buf, rsa_key *key, const unsigned char* data, #endif - TRACE(("leave buf_put_rsa_sign")); + TRACE(("leave buf_put_rsa_sign")) } /* Creates the message value as expected by PKCS, see rfc2437 etc */ diff --git a/signkey.c b/signkey.c index 2c8da55..b6b8bdc 100644 --- a/signkey.c +++ b/signkey.c @@ -94,7 +94,7 @@ int buf_get_pub_key(buffer *buf, sign_key *key, int *type) { int keytype; int ret = DROPBEAR_FAILURE; - TRACE(("enter buf_get_pub_key")); + TRACE(("enter buf_get_pub_key")) ident = buf_getstring(buf, &len); keytype = signkey_type_from_name(ident, len); @@ -130,7 +130,7 @@ int buf_get_pub_key(buffer *buf, sign_key *key, int *type) { } #endif - TRACE(("leave buf_get_pub_key")); + TRACE(("leave buf_get_pub_key")) return ret; @@ -146,14 +146,14 @@ int buf_get_priv_key(buffer *buf, sign_key *key, int *type) { int keytype; int ret = DROPBEAR_FAILURE; - TRACE(("enter buf_get_priv_key")); + TRACE(("enter buf_get_priv_key")) ident = buf_getstring(buf, &len); keytype = signkey_type_from_name(ident, len); m_free(ident); if (*type != DROPBEAR_SIGNKEY_ANY && *type != keytype) { - TRACE(("wrong key type: %d %d", *type, keytype)); + TRACE(("wrong key type: %d %d", *type, keytype)) return DROPBEAR_FAILURE; } @@ -183,7 +183,7 @@ int buf_get_priv_key(buffer *buf, sign_key *key, int *type) { } #endif - TRACE(("leave buf_get_priv_key")); + TRACE(("leave buf_get_priv_key")) return ret; @@ -194,7 +194,7 @@ void buf_put_pub_key(buffer* buf, sign_key *key, int type) { buffer *pubkeys; - TRACE(("enter buf_put_pub_key")); + TRACE(("enter buf_put_pub_key")) pubkeys = buf_new(MAX_PUBKEY_SIZE); #ifdef DROPBEAR_DSS @@ -216,26 +216,26 @@ void buf_put_pub_key(buffer* buf, sign_key *key, int type) { pubkeys->len); buf_free(pubkeys); - TRACE(("leave buf_put_pub_key")); + TRACE(("leave buf_put_pub_key")) } /* type is either DROPBEAR_SIGNKEY_DSS or DROPBEAR_SIGNKEY_RSA */ void buf_put_priv_key(buffer* buf, sign_key *key, int type) { - TRACE(("enter buf_put_priv_key")); - TRACE(("type is %d", type)); + TRACE(("enter buf_put_priv_key")) + TRACE(("type is %d", type)) #ifdef DROPBEAR_DSS if (type == DROPBEAR_SIGNKEY_DSS) { buf_put_dss_priv_key(buf, key->dsskey); - TRACE(("leave buf_put_priv_key: dss done")); + TRACE(("leave buf_put_priv_key: dss done")) return; } #endif #ifdef DROPBEAR_RSA if (type == DROPBEAR_SIGNKEY_RSA) { buf_put_rsa_priv_key(buf, key->rsakey); - TRACE(("leave buf_put_priv_key: rsa done")); + TRACE(("leave buf_put_priv_key: rsa done")) return; } #endif @@ -244,7 +244,7 @@ void buf_put_priv_key(buffer* buf, sign_key *key, int type) { void sign_key_free(sign_key *key) { - TRACE(("enter sign_key_free")); + TRACE(("enter sign_key_free")) #ifdef DROPBEAR_DSS dss_key_free(key->dsskey); @@ -256,7 +256,7 @@ void sign_key_free(sign_key *key) { #endif m_free(key); - TRACE(("leave sign_key_free")); + TRACE(("leave sign_key_free")) } static char hexdig(unsigned char x) { @@ -393,7 +393,7 @@ int buf_verify(buffer * buf, sign_key *key, const unsigned char *data, unsigned char * ident = NULL; unsigned int identlen = 0; - TRACE(("enter buf_verify")); + TRACE(("enter buf_verify")) bloblen = buf_getint(buf); ident = buf_getstring(buf, &identlen); @@ -442,17 +442,17 @@ int cmp_base64_key(const unsigned char* keyblob, unsigned int keybloblen, if (base64_decode(buf_getptr(line, len), len, buf_getwriteptr(decodekey, decodekey->size), &decodekeylen) != CRYPT_OK) { - TRACE(("checkpubkey: base64 decode failed")); + TRACE(("checkpubkey: base64 decode failed")) goto out; } - TRACE(("checkpubkey: base64_decode success")); + TRACE(("checkpubkey: base64_decode success")) buf_incrlen(decodekey, decodekeylen); /* compare the keys */ if ( ( decodekeylen != keybloblen ) || memcmp( buf_getptr(decodekey, decodekey->len), keyblob, decodekey->len) != 0) { - TRACE(("checkpubkey: compare failed")); + TRACE(("checkpubkey: compare failed")) goto out; } @@ -461,7 +461,7 @@ int cmp_base64_key(const unsigned char* keyblob, unsigned int keybloblen, filealgolen = buf_getint(decodekey); filealgo = buf_getptr(decodekey, filealgolen); if (filealgolen != algolen || memcmp(filealgo, algoname, algolen) != 0) { - TRACE(("checkpubkey: algo match failed")); + TRACE(("checkpubkey: algo match failed")) goto out; } diff --git a/svr-agentfwd.c b/svr-agentfwd.c index 60c23f7..5127158 100644 --- a/svr-agentfwd.c +++ b/svr-agentfwd.c @@ -101,7 +101,7 @@ static void agentaccept(struct Listener *UNUSED(listener), int sock) { fd = accept(sock, NULL, NULL); if (fd < 0) { - TRACE(("accept failed")); + TRACE(("accept failed")) return; } diff --git a/svr-algo.c b/svr-algo.c index 5559da6..c0b7823 100644 --- a/svr-algo.c +++ b/svr-algo.c @@ -47,7 +47,7 @@ algo_type * svr_buf_match_algo(buffer* buf, algo_type localalgos[], /* get the comma-separated list from the buffer ie "algo1,algo2,algo3" */ algolist = buf_getstring(buf, &len); /* Debug this */ - TRACE(("buf_match_algo: %s", algolist)); + TRACE(("buf_match_algo: %s", algolist)) if (len > MAX_PROPOSED_ALGO*(MAX_NAME_LEN+1)) { goto out; /* just a sanity check, no other use */ } diff --git a/svr-auth.c b/svr-auth.c index 5eb3e27..f0fca38 100644 --- a/svr-auth.c +++ b/svr-auth.c @@ -67,9 +67,9 @@ static void authclear() { * ignore this, but possibly serves as a legal "no trespassing" sign */ static void send_msg_userauth_banner() { - TRACE(("enter send_msg_userauth_banner")); + TRACE(("enter send_msg_userauth_banner")) if (svr_opts.banner == NULL) { - TRACE(("leave send_msg_userauth_banner: banner is NULL")); + TRACE(("leave send_msg_userauth_banner: banner is NULL")) return; } @@ -84,7 +84,7 @@ static void send_msg_userauth_banner() { buf_free(svr_opts.banner); svr_opts.banner = NULL; - TRACE(("leave send_msg_userauth_banner")); + TRACE(("leave send_msg_userauth_banner")) } /* handle a userauth request, check validity, pass to password or pubkey @@ -94,11 +94,11 @@ void recv_msg_userauth_request() { unsigned char *username = NULL, *servicename = NULL, *methodname = NULL; unsigned int userlen, servicelen, methodlen; - TRACE(("enter recv_msg_userauth_request")); + TRACE(("enter recv_msg_userauth_request")) /* ignore packets if auth is already done */ if (ses.authstate.authdone == 1) { - TRACE(("leave recv_msg_userauth_request: authdone already")); + TRACE(("leave recv_msg_userauth_request: authdone already")) return; } @@ -128,7 +128,7 @@ void recv_msg_userauth_request() { if (methodlen == AUTH_METHOD_NONE_LEN && strncmp(methodname, AUTH_METHOD_NONE, AUTH_METHOD_NONE_LEN) == 0) { - TRACE(("recv_msg_userauth_request: 'none' request")); + TRACE(("recv_msg_userauth_request: 'none' request")) send_msg_userauth_failure(0, 0); goto out; } @@ -136,7 +136,7 @@ void recv_msg_userauth_request() { /* check username is good before continuing */ if (checkusername(username, userlen) == DROPBEAR_FAILURE) { /* username is invalid/no shell/etc - send failure */ - TRACE(("sending checkusername failure")); + TRACE(("sending checkusername failure")) send_msg_userauth_failure(0, 1); goto out; } @@ -195,7 +195,7 @@ static int checkusername(unsigned char *username, unsigned int userlen) { char* listshell = NULL; char* usershell = NULL; - TRACE(("enter checkusername")); + TRACE(("enter checkusername")) if (userlen > MAX_USERNAME_LEN) { return DROPBEAR_FAILURE; } @@ -217,7 +217,7 @@ static int checkusername(unsigned char *username, unsigned int userlen) { /* check that user exists */ if (ses.authstate.pw == NULL) { - TRACE(("leave checkusername: user '%s' doesn't exist", username)); + TRACE(("leave checkusername: user '%s' doesn't exist", username)) dropbear_log(LOG_WARNING, "login attempt for nonexistent user from %s", svr_ses.addrstring); @@ -230,7 +230,7 @@ static int checkusername(unsigned char *username, unsigned int userlen) { /* check for non-root if desired */ if (svr_opts.norootlogin && ses.authstate.pw->pw_uid == 0) { - TRACE(("leave checkusername: root login disabled")); + TRACE(("leave checkusername: root login disabled")) dropbear_log(LOG_WARNING, "root login rejected"); send_msg_userauth_failure(0, 1); return DROPBEAR_FAILURE; @@ -238,14 +238,14 @@ static int checkusername(unsigned char *username, unsigned int userlen) { /* check for an empty password */ if (ses.authstate.pw->pw_passwd[0] == '\0') { - TRACE(("leave checkusername: empty pword")); + TRACE(("leave checkusername: empty pword")) dropbear_log(LOG_WARNING, "user '%s' has blank password, rejected", ses.authstate.printableuser); send_msg_userauth_failure(0, 1); return DROPBEAR_FAILURE; } - TRACE(("shell is %s", ses.authstate.pw->pw_shell)); + TRACE(("shell is %s", ses.authstate.pw->pw_shell)) /* check that the shell is set */ usershell = ses.authstate.pw->pw_shell; @@ -259,7 +259,7 @@ static int checkusername(unsigned char *username, unsigned int userlen) { * is platform-specific) */ setusershell(); while ((listshell = getusershell()) != NULL) { - TRACE(("test shell is '%s'", listshell)); + TRACE(("test shell is '%s'", listshell)) if (strcmp(listshell, usershell) == 0) { /* have a match */ goto goodshell; @@ -267,7 +267,7 @@ static int checkusername(unsigned char *username, unsigned int userlen) { } /* no matching shell */ endusershell(); - TRACE(("no matching shell")); + TRACE(("no matching shell")) dropbear_log(LOG_WARNING, "user '%s' has invalid shell, rejected", ses.authstate.printableuser); send_msg_userauth_failure(0, 1); @@ -275,10 +275,10 @@ static int checkusername(unsigned char *username, unsigned int userlen) { goodshell: endusershell(); - TRACE(("matching shell")); + TRACE(("matching shell")) - TRACE(("uid = %d", ses.authstate.pw->pw_uid)); - TRACE(("leave checkusername")); + TRACE(("uid = %d", ses.authstate.pw->pw_uid)) + TRACE(("leave checkusername")) return DROPBEAR_SUCCESS; } @@ -292,7 +292,7 @@ void send_msg_userauth_failure(int partial, int incrfail) { buffer *typebuf = NULL; - TRACE(("enter send_msg_userauth_failure")); + TRACE(("enter send_msg_userauth_failure")) CHECKCLEARTOWRITE(); @@ -331,7 +331,7 @@ void send_msg_userauth_failure(int partial, int incrfail) { if (ses.authstate.failcount >= MAX_AUTH_TRIES) { char * userstr; /* XXX - send disconnect ? */ - TRACE(("Max auth tries reached, exiting")); + TRACE(("Max auth tries reached, exiting")) if (ses.authstate.printableuser == NULL) { userstr = "is invalid"; @@ -342,13 +342,13 @@ void send_msg_userauth_failure(int partial, int incrfail) { userstr, svr_ses.addrstring); } - TRACE(("leave send_msg_userauth_failure")); + TRACE(("leave send_msg_userauth_failure")) } /* Send a success message to the user, and set the "authdone" flag */ void send_msg_userauth_success() { - TRACE(("enter send_msg_userauth_success")); + TRACE(("enter send_msg_userauth_success")) CHECKCLEARTOWRITE(); @@ -368,6 +368,6 @@ void send_msg_userauth_success() { * logins - a nasty situation. */ m_close(svr_ses.childpipe); - TRACE(("leave send_msg_userauth_success")); + TRACE(("leave send_msg_userauth_success")) } diff --git a/svr-authpam.c b/svr-authpam.c index 4937fa6..4b16616 100644 --- a/svr-authpam.c +++ b/svr-authpam.c @@ -57,7 +57,7 @@ pamConvFunc(int num_msg, const char* message = (*msg)->msg; - TRACE(("enter pamConvFunc")); + TRACE(("enter pamConvFunc")) if (num_msg != 1) { /* If you're getting here - Dropbear probably can't support your pam @@ -67,11 +67,11 @@ pamConvFunc(int num_msg, return PAM_CONV_ERR; } - TRACE(("msg_style is %d", (*msg)->msg_style)); + TRACE(("msg_style is %d", (*msg)->msg_style)) if (message) { - TRACE(("message is '%s'", message)); + TRACE(("message is '%s'", message)) } else { - TRACE(("null message")); + TRACE(("null message")) } switch((*msg)->msg_style) { @@ -79,7 +79,7 @@ pamConvFunc(int num_msg, case PAM_PROMPT_ECHO_OFF: if (strcmp(message, "Password:") != 0) { - TRACE(("PAM_PROMPT_ECHO_OFF: unrecognized prompt")); + TRACE(("PAM_PROMPT_ECHO_OFF: unrecognized prompt")) rc = PAM_CONV_ERR; break; } @@ -102,7 +102,7 @@ pamConvFunc(int num_msg, if ((strcmp(message, "login: " ) != 0) && (strcmp(message, "login:" ) != 0) && (strcmp(message, "Please enter username: " ) != 0)) { - TRACE(("PAM_PROMPT_ECHO_ON: unrecognized prompt")); + TRACE(("PAM_PROMPT_ECHO_ON: unrecognized prompt")) rc = PAM_CONV_ERR; break; } @@ -117,17 +117,17 @@ pamConvFunc(int num_msg, /* Safe to just use the direct pointer (no strdup) since * it shouldn't be getting munged at all */ resp->resp = m_strdup(userDatap->user); - TRACE(("userDatap->user='%s'", userDatap->user)); + TRACE(("userDatap->user='%s'", userDatap->user)) (*respp) = resp; break; default: - TRACE(("Unknown message type")); + TRACE(("Unknown message type")) rc = PAM_CONV_ERR; break; } - TRACE(("leave pamConvFunc, rc %d", rc)); + TRACE(("leave pamConvFunc, rc %d", rc)) return rc; } @@ -224,7 +224,7 @@ cleanup: m_free(password); } if (pamHandlep != NULL) { - TRACE(("pam_end")); + TRACE(("pam_end")) (void) pam_end(pamHandlep, 0 /* pam_status */); } } diff --git a/svr-authpubkey.c b/svr-authpubkey.c index 5052b10..5daba0f 100644 --- a/svr-authpubkey.c +++ b/svr-authpubkey.c @@ -60,7 +60,7 @@ void svr_auth_pubkey() { char* fp = NULL; int type = -1; - TRACE(("enter pubkeyauth")); + TRACE(("enter pubkeyauth")) /* 0 indicates user just wants to check if key can be used, 1 is an * actual attempt*/ @@ -127,7 +127,7 @@ out: sign_key_free(key); key = NULL; } - TRACE(("leave pubkeyauth")); + TRACE(("leave pubkeyauth")) } /* Reply that the key is valid for auth, this is sent when the user sends @@ -136,7 +136,7 @@ out: static void send_msg_userauth_pk_ok(unsigned char* algo, unsigned int algolen, unsigned char* keyblob, unsigned int keybloblen) { - TRACE(("enter send_msg_userauth_pk_ok")); + TRACE(("enter send_msg_userauth_pk_ok")) CHECKCLEARTOWRITE(); buf_putbyte(ses.writepayload, SSH_MSG_USERAUTH_PK_OK); @@ -144,7 +144,7 @@ static void send_msg_userauth_pk_ok(unsigned char* algo, unsigned int algolen, buf_putstring(ses.writepayload, keyblob, keybloblen); encrypt_packet(); - TRACE(("leave send_msg_userauth_pk_ok")); + TRACE(("leave send_msg_userauth_pk_ok")) } @@ -160,7 +160,7 @@ static int checkpubkey(unsigned char* algo, unsigned int algolen, buffer * line = NULL; unsigned int len, pos; - TRACE(("enter checkpubkey")); + TRACE(("enter checkpubkey")) /* check that we can use the algo */ if (have_algo(algo, algolen, sshhostkey) == DROPBEAR_FAILURE) { @@ -172,7 +172,7 @@ static int checkpubkey(unsigned char* algo, unsigned int algolen, /* check file permissions, also whether file exists */ if (checkpubkeyperms() == DROPBEAR_FAILURE) { - TRACE(("bad authorized_keys permissions, or file doesn't exist")); + TRACE(("bad authorized_keys permissions, or file doesn't exist")) goto out; } @@ -190,7 +190,7 @@ static int checkpubkey(unsigned char* algo, unsigned int algolen, if (authfile == NULL) { goto out; } - TRACE(("checkpubkey: opened authorized_keys OK")); + TRACE(("checkpubkey: opened authorized_keys OK")) line = buf_new(MAX_AUTHKEYS_LINE); @@ -199,12 +199,12 @@ static int checkpubkey(unsigned char* algo, unsigned int algolen, if (buf_getline(line, authfile) == DROPBEAR_FAILURE) { /* EOF reached */ - TRACE(("checkpubkey: authorized_keys EOF reached")); + TRACE(("checkpubkey: authorized_keys EOF reached")) break; } if (line->len < MIN_AUTHKEYS_LINE) { - TRACE(("checkpubkey: line too short")); + TRACE(("checkpubkey: line too short")) continue; /* line is too short for it to be a valid key */ } @@ -217,7 +217,7 @@ static int checkpubkey(unsigned char* algo, unsigned int algolen, /* check for space (' ') character */ if (buf_getbyte(line) != ' ') { - TRACE(("checkpubkey: space character expected, isn't there")); + TRACE(("checkpubkey: space character expected, isn't there")) continue; } @@ -229,7 +229,7 @@ static int checkpubkey(unsigned char* algo, unsigned int algolen, buf_setpos(line, pos); buf_setlen(line, line->pos + len); - TRACE(("checkpubkey: line pos = %d len = %d", line->pos, line->len)); + TRACE(("checkpubkey: line pos = %d len = %d", line->pos, line->len)) ret = cmp_base64_key(keyblob, keybloblen, algo, algolen, line); if (ret == DROPBEAR_SUCCESS) { @@ -248,7 +248,7 @@ out: buf_free(line); } m_free(filename); - TRACE(("leave checkpubkey: ret=%d", ret)); + TRACE(("leave checkpubkey: ret=%d", ret)) return ret; } @@ -264,7 +264,7 @@ static int checkpubkeyperms() { int ret = DROPBEAR_FAILURE; unsigned int len; - TRACE(("enter checkpubkeyperms")); + TRACE(("enter checkpubkeyperms")) assert(ses.authstate.pw); if (ses.authstate.pw->pw_dir == NULL) { @@ -303,7 +303,7 @@ static int checkpubkeyperms() { out: m_free(filename); - TRACE(("leave checkpubkeyperms")); + TRACE(("leave checkpubkeyperms")) return ret; } @@ -313,24 +313,24 @@ out: static int checkfileperm(char * filename) { struct stat filestat; - TRACE(("enter checkfileperm(%s)", filename)); + TRACE(("enter checkfileperm(%s)", filename)) if (stat(filename, &filestat) != 0) { - TRACE(("leave checkfileperm: stat() != 0")); + TRACE(("leave checkfileperm: stat() != 0")) return DROPBEAR_FAILURE; } /* check ownership - user or root only*/ if (filestat.st_uid != ses.authstate.pw->pw_uid && filestat.st_uid != 0) { - TRACE(("leave checkfileperm: wrong ownership")); + TRACE(("leave checkfileperm: wrong ownership")) return DROPBEAR_FAILURE; } /* check permissions - don't want group or others +w */ if (filestat.st_mode & (S_IWGRP | S_IWOTH)) { - TRACE(("leave checkfileperm: wrong perms")); + TRACE(("leave checkfileperm: wrong perms")) return DROPBEAR_FAILURE; } - TRACE(("leave checkfileperm: success")); + TRACE(("leave checkfileperm: success")) return DROPBEAR_SUCCESS; } diff --git a/svr-chansession.c b/svr-chansession.c index f1e9c88..c365114 100644 --- a/svr-chansession.c +++ b/svr-chansession.c @@ -87,7 +87,7 @@ static void sesssigchild_handler(int UNUSED(dummy)) { struct sigaction sa_chld; struct exitinfo *exit = NULL; - TRACE(("enter sigchld handler")); + TRACE(("enter sigchld handler")) while ((pid = waitpid(-1, &status, WNOHANG)) > 0) { /* find the corresponding chansess */ for (i = 0; i < svr_ses.childpidsize; i++) { @@ -126,7 +126,7 @@ static void sesssigchild_handler(int UNUSED(dummy)) { sa_chld.sa_handler = sesssigchild_handler; sa_chld.sa_flags = SA_NOCLDSTOP; sigaction(SIGCHLD, &sa_chld, NULL); - TRACE(("leave sigchld handler")); + TRACE(("leave sigchld handler")) } /* send the exit status or the signal causing termination for a session */ @@ -248,9 +248,9 @@ static void closechansess(struct Channel *channel) { send_exitsignalstatus(channel); - TRACE(("enter closechansess")); + TRACE(("enter closechansess")) if (chansess == NULL) { - TRACE(("leave closechansess: chansess == NULL")); + TRACE(("leave closechansess: chansess == NULL")) return; } @@ -280,8 +280,8 @@ static void closechansess(struct Channel *channel) { for (i = 0; i < svr_ses.childpidsize; i++) { if (svr_ses.childpids[i].chansess == chansess) { assert(svr_ses.childpids[i].pid > 0); - TRACE(("closing pid %d", svr_ses.childpids[i].pid)); - TRACE(("exitpid = %d", chansess->exit.exitpid)); + TRACE(("closing pid %d", svr_ses.childpids[i].pid)) + TRACE(("exitpid = %d", chansess->exit.exitpid)) svr_ses.childpids[i].pid = -1; svr_ses.childpids[i].chansess = NULL; } @@ -289,7 +289,7 @@ static void closechansess(struct Channel *channel) { m_free(chansess); - TRACE(("leave closechansess")); + TRACE(("leave closechansess")) } /* Handle requests for a channel. These can be execution requests, @@ -302,19 +302,19 @@ static void chansessionrequest(struct Channel *channel) { int ret = 1; struct ChanSess *chansess; - TRACE(("enter chansessionrequest")); + TRACE(("enter chansessionrequest")) type = buf_getstring(ses.payload, &typelen); wantreply = buf_getbyte(ses.payload); if (typelen > MAX_NAME_LEN) { - TRACE(("leave chansessionrequest: type too long")); /* XXX send error?*/ + TRACE(("leave chansessionrequest: type too long")) /* XXX send error?*/ goto out; } chansess = (struct ChanSess*)channel->typedata; assert(chansess != NULL); - TRACE(("type is %s", type)); + TRACE(("type is %s", type)) if (strcmp(type, "window-change") == 0) { ret = sessionwinchange(chansess); @@ -351,7 +351,7 @@ out: } m_free(type); - TRACE(("leave chansessionrequest")); + TRACE(("leave chansessionrequest")) } @@ -421,7 +421,7 @@ static void get_termmodes(struct ChanSess *chansess) { const struct TermCode * termcode; unsigned int len; - TRACE(("enter get_termmodes")); + TRACE(("enter get_termmodes")) /* Term modes */ /* We'll ignore errors and continue if we can't set modes. @@ -438,7 +438,7 @@ static void get_termmodes(struct ChanSess *chansess) { } if (len == 0) { - TRACE(("leave get_termmodes: empty terminal modes string")); + TRACE(("leave get_termmodes: empty terminal modes string")) } while (((opcode = buf_getbyte(ses.payload)) != 0x00) && opcode <= 159) { @@ -500,7 +500,7 @@ static void get_termmodes(struct ChanSess *chansess) { if (tcsetattr(chansess->master, TCSANOW, &termio) < 0) { dropbear_log(LOG_INFO, "error setting terminal attributes"); } - TRACE(("leave get_termmodes")); + TRACE(("leave get_termmodes")) } /* Set up a session pty which will be used to execute the shell or program. @@ -511,11 +511,11 @@ static int sessionpty(struct ChanSess * chansess) { unsigned int termlen; unsigned char namebuf[65]; - TRACE(("enter sessionpty")); + TRACE(("enter sessionpty")) chansess->term = buf_getstring(ses.payload, &termlen); if (termlen > MAX_TERM_LEN) { /* TODO send disconnect ? */ - TRACE(("leave sessionpty: term len too long")); + TRACE(("leave sessionpty: term len too long")) return DROPBEAR_FAILURE; } @@ -524,7 +524,7 @@ static int sessionpty(struct ChanSess * chansess) { dropbear_exit("multiple pty requests"); } if (pty_allocate(&chansess->master, &chansess->slave, namebuf, 64) == 0) { - TRACE(("leave sessionpty: failed to allocate pty")); + TRACE(("leave sessionpty: failed to allocate pty")) return DROPBEAR_FAILURE; } @@ -541,7 +541,7 @@ static int sessionpty(struct ChanSess * chansess) { /* Read the terminal modes */ get_termmodes(chansess); - TRACE(("leave sessionpty")); + TRACE(("leave sessionpty")) return DROPBEAR_SUCCESS; } @@ -555,7 +555,7 @@ static int sessioncommand(struct Channel *channel, struct ChanSess *chansess, unsigned int cmdlen; int ret; - TRACE(("enter sessioncommand")); + TRACE(("enter sessioncommand")) if (chansess->cmd != NULL) { /* Note that only one command can _succeed_. The client might try @@ -612,7 +612,7 @@ static int noptycommand(struct Channel *channel, struct ChanSess *chansess) { pid_t pid; unsigned int i; - TRACE(("enter noptycommand")); + TRACE(("enter noptycommand")) /* redirect stdin/stdout/stderr */ if (pipe(infds) != 0) @@ -635,7 +635,7 @@ static int noptycommand(struct Channel *channel, struct ChanSess *chansess) { if ((dup2(infds[FDIN], STDIN_FILENO) < 0) || (dup2(outfds[FDOUT], STDOUT_FILENO) < 0) || (dup2(errfds[FDOUT], STDERR_FILENO) < 0)) { - TRACE(("leave noptycommand: error redirecting FDs")); + TRACE(("leave noptycommand: error redirecting FDs")) return DROPBEAR_FAILURE; } @@ -651,7 +651,7 @@ static int noptycommand(struct Channel *channel, struct ChanSess *chansess) { } else { /* parent */ - TRACE(("continue noptycommand: parent")); + TRACE(("continue noptycommand: parent")) chansess->pid = pid; addchildpid(chansess, pid); @@ -687,7 +687,7 @@ static int noptycommand(struct Channel *channel, struct ChanSess *chansess) { #undef FDIN #undef FDOUT - TRACE(("leave noptycommand")); + TRACE(("leave noptycommand")) return DROPBEAR_SUCCESS; } @@ -705,7 +705,7 @@ static int ptycommand(struct Channel *channel, struct ChanSess *chansess) { char *hushpath = NULL; #endif - TRACE(("enter ptycommand")); + TRACE(("enter ptycommand")) /* we need to have a pty allocated */ if (chansess->master == -1 || chansess->tty == NULL) { @@ -728,7 +728,7 @@ static int ptycommand(struct Channel *channel, struct ChanSess *chansess) { if ((dup2(chansess->slave, STDIN_FILENO) < 0) || (dup2(chansess->slave, STDERR_FILENO) < 0) || (dup2(chansess->slave, STDOUT_FILENO) < 0)) { - TRACE(("leave ptycommand: error redirecting filedesc")); + TRACE(("leave ptycommand: error redirecting filedesc")) return DROPBEAR_FAILURE; } @@ -776,7 +776,7 @@ static int ptycommand(struct Channel *channel, struct ChanSess *chansess) { } else { /* parent */ - TRACE(("continue ptycommand: parent")); + TRACE(("continue ptycommand: parent")) chansess->pid = pid; /* add a child pid */ @@ -792,7 +792,7 @@ static int ptycommand(struct Channel *channel, struct ChanSess *chansess) { } - TRACE(("leave ptycommand")); + TRACE(("leave ptycommand")) return DROPBEAR_SUCCESS; } diff --git a/svr-kex.c b/svr-kex.c index 47c540e..a9954bb 100644 --- a/svr-kex.c +++ b/svr-kex.c @@ -46,7 +46,7 @@ void recv_msg_kexdh_init() { DEF_MP_INT(dh_e); - TRACE(("enter recv_msg_kexdh_init")); + TRACE(("enter recv_msg_kexdh_init")) if (!ses.kexstate.recvkexinit) { dropbear_exit("Premature kexdh_init message received"); } @@ -60,7 +60,7 @@ void recv_msg_kexdh_init() { send_msg_newkeys(); ses.requirenext = SSH_MSG_NEWKEYS; - TRACE(("leave recv_msg_kexdh_init")); + TRACE(("leave recv_msg_kexdh_init")) } /* Generate our side of the diffie-hellman key exchange value (dh_f), and @@ -74,7 +74,7 @@ static void send_msg_kexdh_reply(mp_int *dh_e) { DEF_MP_INT(dh_y); DEF_MP_INT(dh_f); - TRACE(("enter send_msg_kexdh_reply")); + TRACE(("enter send_msg_kexdh_reply")) m_mp_init_multi(&dh_y, &dh_f, NULL); gen_kexdh_vals(&dh_f, &dh_y); @@ -99,6 +99,6 @@ static void send_msg_kexdh_reply(mp_int *dh_e) { /* the SSH_MSG_KEXDH_REPLY is done */ encrypt_packet(); - TRACE(("leave send_msg_kexdh_reply")); + TRACE(("leave send_msg_kexdh_reply")) } diff --git a/svr-main.c b/svr-main.c index 48e6042..e39f3d9 100644 --- a/svr-main.c +++ b/svr-main.c @@ -247,7 +247,7 @@ void main_noinetd() { } if (pipe(childpipe) < 0) { - TRACE(("error creating child pipe")); + TRACE(("error creating child pipe")) close(childsock); continue; } @@ -369,11 +369,11 @@ static int listensockets(int *sock, int sockcount, int *maxfd) { unsigned int sockpos = 0; int nsock; - TRACE(("listensockets: %d to try\n", svr_opts.portcount)); + TRACE(("listensockets: %d to try\n", svr_opts.portcount)) for (i = 0; i < svr_opts.portcount; i++) { - TRACE(("listening on '%s'", svr_opts.ports[i])); + TRACE(("listening on '%s'", svr_opts.ports[i])) nsock = dropbear_listen(NULL, svr_opts.ports[i], &sock[sockpos], sockcount - sockpos, diff --git a/svr-runopts.c b/svr-runopts.c index 06ffafc..375797b 100644 --- a/svr-runopts.c +++ b/svr-runopts.c @@ -270,7 +270,7 @@ void loadhostkeys() { int ret; int type; - TRACE(("enter loadhostkeys")); + TRACE(("enter loadhostkeys")) svr_opts.hostkey = new_sign_key(); @@ -300,5 +300,5 @@ void loadhostkeys() { dropbear_exit("No hostkeys available"); } - TRACE(("leave loadhostkeys")); + TRACE(("leave loadhostkeys")) } diff --git a/svr-service.c b/svr-service.c index e823490..2c78e7d 100644 --- a/svr-service.c +++ b/svr-service.c @@ -39,7 +39,7 @@ void recv_msg_service_request() { unsigned char * name; unsigned int len; - TRACE(("enter recv_msg_service_request")); + TRACE(("enter recv_msg_service_request")) name = buf_getstring(ses.payload, &len); @@ -49,7 +49,7 @@ void recv_msg_service_request() { send_msg_service_accept(name, len); m_free(name); - TRACE(("leave recv_msg_service_request: done ssh-userauth")); + TRACE(("leave recv_msg_service_request: done ssh-userauth")) return; } @@ -62,7 +62,7 @@ void recv_msg_service_request() { send_msg_service_accept(name, len); m_free(name); - TRACE(("leave recv_msg_service_request: done ssh-connection")); + TRACE(("leave recv_msg_service_request: done ssh-connection")) return; } @@ -75,7 +75,7 @@ void recv_msg_service_request() { static void send_msg_service_accept(unsigned char *name, int len) { - TRACE(("accepting service %s", name)); + TRACE(("accepting service %s", name)) CHECKCLEARTOWRITE(); diff --git a/svr-tcpfwd.c b/svr-tcpfwd.c index 68ceba5..7fbc609 100644 --- a/svr-tcpfwd.c +++ b/svr-tcpfwd.c @@ -70,10 +70,10 @@ void recv_msg_global_request_remotetcp() { unsigned int wantreply = 0; int ret = DROPBEAR_FAILURE; - TRACE(("enter recv_msg_global_request_remotetcp")); + TRACE(("enter recv_msg_global_request_remotetcp")) if (opts.noremotetcp) { - TRACE(("leave recv_msg_global_request_remotetcp: remote tcp forwarding disabled")); + TRACE(("leave recv_msg_global_request_remotetcp: remote tcp forwarding disabled")) goto out; } @@ -81,7 +81,7 @@ void recv_msg_global_request_remotetcp() { wantreply = buf_getbyte(ses.payload); if (namelen > MAXNAMLEN) { - TRACE(("name len is wrong: %d", namelen)); + TRACE(("name len is wrong: %d", namelen)) goto out; } @@ -90,7 +90,7 @@ void recv_msg_global_request_remotetcp() { } else if (strcmp("cancel-tcpip-forward", reqname) == 0) { ret = svr_cancelremotetcp(); } else { - TRACE(("reqname isn't tcpip-forward: '%s'", reqname)); + TRACE(("reqname isn't tcpip-forward: '%s'", reqname)) } out: @@ -104,7 +104,7 @@ out: m_free(reqname); - TRACE(("leave recv_msg_global_request")); + TRACE(("leave recv_msg_global_request")) } @@ -143,11 +143,11 @@ static int svr_cancelremotetcp() { struct Listener * listener = NULL; struct TCPListener tcpinfo; - TRACE(("enter cancelremotetcp")); + TRACE(("enter cancelremotetcp")) bindaddr = buf_getstring(ses.payload, &addrlen); if (addrlen > MAX_IP_LEN) { - TRACE(("addr len too long: %d", addrlen)); + TRACE(("addr len too long: %d", addrlen)) goto out; } @@ -163,7 +163,7 @@ static int svr_cancelremotetcp() { out: m_free(bindaddr); - TRACE(("leave cancelremotetcp")); + TRACE(("leave cancelremotetcp")) return ret; } @@ -175,12 +175,12 @@ static int svr_remotetcpreq() { struct TCPListener *tcpinfo = NULL; unsigned int port; - TRACE(("enter remotetcpreq")); + TRACE(("enter remotetcpreq")) /* NOTE: at this stage, we ignore bindaddr. see below and listen_tcpfwd */ bindaddr = buf_getstring(ses.payload, &addrlen); if (addrlen > MAX_IP_LEN) { - TRACE(("addr len too long: %d", addrlen)); + TRACE(("addr len too long: %d", addrlen)) goto out; } @@ -192,12 +192,12 @@ static int svr_remotetcpreq() { } if (port < 1 || port > 65535) { - TRACE(("invalid port: %d", port)); + TRACE(("invalid port: %d", port)) goto out; } if (!ses.allowprivport && port < IPPORT_RESERVED) { - TRACE(("can't assign port < 1024 for non-root")); + TRACE(("can't assign port < 1024 for non-root")) goto out; } @@ -218,7 +218,7 @@ out: m_free(tcpinfo->sendaddr); m_free(tcpinfo); } - TRACE(("leave remotetcpreq")); + TRACE(("leave remotetcpreq")) return ret; } @@ -236,13 +236,13 @@ static int newtcpdirect(struct Channel * channel) { int err = SSH_OPEN_ADMINISTRATIVELY_PROHIBITED; if (opts.nolocaltcp) { - TRACE(("leave newtcpdirect: local tcp forwarding disabled")); + TRACE(("leave newtcpdirect: local tcp forwarding disabled")) goto out; } desthost = buf_getstring(ses.payload, &len); if (len > MAX_HOST_LEN) { - TRACE(("leave newtcpdirect: desthost too long")); + TRACE(("leave newtcpdirect: desthost too long")) goto out; } @@ -250,7 +250,7 @@ static int newtcpdirect(struct Channel * channel) { orighost = buf_getstring(ses.payload, &len); if (len > MAX_HOST_LEN) { - TRACE(("leave newtcpdirect: orighost too long")); + TRACE(("leave newtcpdirect: orighost too long")) goto out; } @@ -258,7 +258,7 @@ static int newtcpdirect(struct Channel * channel) { /* best be sure */ if (origport > 65535 || destport > 65535) { - TRACE(("leave newtcpdirect: port > 65535")); + TRACE(("leave newtcpdirect: port > 65535")) goto out; } @@ -266,7 +266,7 @@ static int newtcpdirect(struct Channel * channel) { sock = connect_remote(desthost, portstring, 1, NULL); if (sock < 0) { err = SSH_OPEN_CONNECT_FAILED; - TRACE(("leave newtcpdirect: sock failed")); + TRACE(("leave newtcpdirect: sock failed")) goto out; } @@ -284,7 +284,7 @@ static int newtcpdirect(struct Channel * channel) { out: m_free(desthost); m_free(orighost); - TRACE(("leave newtcpdirect: err %d", err)); + TRACE(("leave newtcpdirect: err %d", err)) return err; } diff --git a/svr-x11fwd.c b/svr-x11fwd.c index 45c9060..e15fb82 100644 --- a/svr-x11fwd.c +++ b/svr-x11fwd.c @@ -170,7 +170,7 @@ void x11cleanup(struct ChanSess *chansess) { m_free(chansess->x11authprot); m_free(chansess->x11authcookie); - TRACE(("chansess %s", chansess)); + TRACE(("chansess %s", chansess)) if (chansess->x11listener != NULL) { remove_listener(chansess->x11listener); chansess->x11listener = NULL; diff --git a/tcp-accept.c b/tcp-accept.c index c143319..e75224e 100644 --- a/tcp-accept.c +++ b/tcp-accept.c @@ -87,7 +87,7 @@ int listen_tcpfwd(struct TCPListener* tcpinfo) { int nsocks; char* errstring = NULL; - TRACE(("enter listen_tcpfwd")); + TRACE(("enter listen_tcpfwd")) /* first we try to bind, so don't need to do so much cleanup on failure */ snprintf(portstring, sizeof(portstring), "%d", tcpinfo->listenport); @@ -100,7 +100,7 @@ int listen_tcpfwd(struct TCPListener* tcpinfo) { if (nsocks < 0) { dropbear_log(LOG_INFO, "TCP forward failed: %s", errstring); m_free(errstring); - TRACE(("leave listen_tcpfwd: dropbear_listen failed")); + TRACE(("leave listen_tcpfwd: dropbear_listen failed")) return DROPBEAR_FAILURE; } @@ -109,11 +109,11 @@ int listen_tcpfwd(struct TCPListener* tcpinfo) { if (listener == NULL) { m_free(tcpinfo); - TRACE(("leave listen_tcpfwd: listener failed")); + TRACE(("leave listen_tcpfwd: listener failed")) return DROPBEAR_FAILURE; } - TRACE(("leave listen_tcpfwd: success")); + TRACE(("leave listen_tcpfwd: success")) return DROPBEAR_SUCCESS; } -- cgit v1.2.3 From f45eafe342aa07dfdc7a83e865b642f9b8ef2fa0 Mon Sep 17 00:00:00 2001 From: Matt Johnston Date: Sun, 13 Mar 2005 13:58:14 +0000 Subject: * fix longstanding bug with connections being closed on failure to connect to auth socket (server) * differentiate between get_byte and get_bool * get rid of some // comments * general tidying --HG-- extra : convert_revision : fb8d188ce33b6b45804a5ce51b9f601f83bdf3d7 --- buffer.c | 10 ++++++++++ buffer.h | 1 + channel.h | 2 +- cli-auth.c | 2 +- cli-channel.c | 5 +---- cli-chansession.c | 2 +- common-channel.c | 43 ++++++++++++++----------------------------- common-kex.c | 3 +-- debug.h | 2 +- dss.c | 2 ++ kex.h | 6 +++--- scp.c | 3 --- svr-authpam.c | 2 +- svr-authpasswd.c | 2 +- svr-authpubkey.c | 2 +- svr-chansession.c | 2 +- svr-tcpfwd.c | 2 +- svr-x11fwd.c | 2 +- 18 files changed, 42 insertions(+), 51 deletions(-) (limited to 'dss.c') diff --git a/buffer.c b/buffer.c index dff861f..97045ff 100644 --- a/buffer.c +++ b/buffer.c @@ -160,6 +160,16 @@ unsigned char buf_getbyte(buffer* buf) { return buf->data[buf->pos++]; } +/* Get a bool from the buffer and increment the pos */ +unsigned char buf_getbool(buffer* buf) { + + unsigned char b; + b = buf_getbyte(buf); + if (b != 0) + b = 1; + return b; +} + /* put a byte, incrementing the length if required */ void buf_putbyte(buffer* buf, unsigned char val) { diff --git a/buffer.h b/buffer.h index e1031a1..f9aa6fa 100644 --- a/buffer.h +++ b/buffer.h @@ -50,6 +50,7 @@ void buf_setpos(buffer* buf, unsigned int pos); void buf_incrpos(buffer* buf, int incr); /* -ve is ok, to go backwards */ void buf_incrwritepos(buffer* buf, unsigned int incr); unsigned char buf_getbyte(buffer* buf); +unsigned char buf_getbool(buffer* buf); void buf_putbyte(buffer* buf, unsigned char val); unsigned char* buf_getptr(buffer* buf, unsigned int len); unsigned char* buf_getwriteptr(buffer* buf, unsigned int len); diff --git a/channel.h b/channel.h index 225fafb..a2fe87a 100644 --- a/channel.h +++ b/channel.h @@ -100,7 +100,7 @@ void chaninitialise(); void chancleanup(); void setchannelfds(fd_set *readfd, fd_set *writefd); void channelio(fd_set *readfd, fd_set *writefd); -struct Channel* getchannel(unsigned int chan); +struct Channel* getchannel(); struct Channel* newchannel(unsigned int remotechan, const struct ChanType *type, unsigned int transwindow, unsigned int transmaxpacket); diff --git a/cli-auth.c b/cli-auth.c index dfd9bbb..fc51061 100644 --- a/cli-auth.c +++ b/cli-auth.c @@ -127,7 +127,7 @@ void recv_msg_userauth_failure() { methods = buf_getstring(ses.payload, &methlen); - partial = buf_getbyte(ses.payload); + partial = buf_getbool(ses.payload); if (partial) { dropbear_log(LOG_INFO, "Authentication partially succeeded, more attempts required"); diff --git a/cli-channel.c b/cli-channel.c index 42e165b..1bd49ab 100644 --- a/cli-channel.c +++ b/cli-channel.c @@ -33,15 +33,12 @@ /* We receive channel data - only used by the client chansession code*/ void recv_msg_channel_extended_data() { - unsigned int chan; struct Channel *channel; unsigned int datatype; TRACE(("enter recv_msg_channel_extended_data")) - chan = buf_getint(ses.payload); - channel = getchannel(chan); - + channel = getchannel(); if (channel == NULL) { dropbear_exit("Unknown channel"); } diff --git a/cli-chansession.c b/cli-chansession.c index 76e9dfa..a8363ac 100644 --- a/cli-chansession.c +++ b/cli-chansession.c @@ -62,7 +62,7 @@ static void cli_chansessreq(struct Channel *channel) { TRACE(("enter cli_chansessreq")) type = buf_getstring(ses.payload, NULL); - wantreply = buf_getbyte(ses.payload); + wantreply = buf_getbool(ses.payload); if (strcmp(type, "exit-status") != 0) { TRACE(("unknown request '%s'", type)) diff --git a/common-channel.c b/common-channel.c index 6f73fab..bb7928c 100644 --- a/common-channel.c +++ b/common-channel.c @@ -162,8 +162,13 @@ struct Channel* newchannel(unsigned int remotechan, return newchan; } -/* Get the channel structure corresponding to a channel number */ -struct Channel* getchannel(unsigned int chan) { +/* Returns the channel structure corresponding to the channel in the current + * data packet (ses.payload must be positioned appropriately) */ +struct Channel* getchannel() { + + unsigned int chan; + + chan = buf_getint(ses.payload); if (chan >= ses.chansize || ses.channels[chan] == NULL) { return NULL; } @@ -474,14 +479,11 @@ void setchannelfds(fd_set *readfd, fd_set *writefd) { * etc) FD is also EOF */ void recv_msg_channel_eof() { - unsigned int chan; struct Channel * channel; TRACE(("enter recv_msg_channel_eof")) - chan = buf_getint(ses.payload); - channel = getchannel(chan); - + channel = getchannel(); if (channel == NULL) { dropbear_exit("EOF for unknown channel"); } @@ -500,15 +502,11 @@ void recv_msg_channel_eof() { /* Handle channel closure(), respond in kind and close the channels */ void recv_msg_channel_close() { - unsigned int chan; struct Channel * channel; TRACE(("enter recv_msg_channel_close")) - chan = buf_getint(ses.payload); - TRACE(("close channel = %d", chan)) - channel = getchannel(chan); - + channel = getchannel(); if (channel == NULL) { /* disconnect ? */ dropbear_exit("Close for unknown channel"); @@ -567,14 +565,11 @@ static void deletechannel(struct Channel *channel) { * such as chansession or x11fwd */ void recv_msg_channel_request() { - unsigned int chan; struct Channel *channel; TRACE(("enter recv_msg_channel_request")) - chan = buf_getint(ses.payload); - channel = getchannel(chan); - + channel = getchannel(); if (channel == NULL) { /* disconnect ? */ dropbear_exit("Unknown channel"); @@ -666,12 +661,9 @@ static void send_msg_channel_data(struct Channel *channel, int isextended, /* We receive channel data */ void recv_msg_channel_data() { - unsigned int chan; struct Channel *channel; - chan = buf_getint(ses.payload); - channel = getchannel(chan); - + channel = getchannel(); if (channel == NULL) { dropbear_exit("Unknown channel"); } @@ -738,13 +730,10 @@ void common_recv_msg_channel_data(struct Channel *channel, int fd, * as data is sent, and incremented upon receiving window-adjust messages */ void recv_msg_channel_window_adjust() { - unsigned int chan; struct Channel * channel; unsigned int incr; - chan = buf_getint(ses.payload); - channel = getchannel(chan); - + channel = getchannel(); if (channel == NULL) { dropbear_exit("Unknown channel"); } @@ -961,14 +950,12 @@ int send_msg_channel_open_init(int fd, const struct ChanType *type) { * successful*/ void recv_msg_channel_open_confirmation() { - unsigned int chan; struct Channel * channel; int ret; TRACE(("enter recv_msg_channel_open_confirmation")) - chan = buf_getint(ses.payload); - channel = getchannel(chan); + channel = getchannel(); if (channel == NULL) { dropbear_exit("Unknown channel"); } @@ -995,11 +982,9 @@ void recv_msg_channel_open_confirmation() { /* Notification that our channel open request failed */ void recv_msg_channel_open_failure() { - unsigned int chan; struct Channel * channel; - chan = buf_getbyte(ses.payload); - channel = getchannel(chan); + channel = getchannel(); if (channel == NULL) { dropbear_exit("Unknown channel"); } diff --git a/common-kex.c b/common-kex.c index 97e341d..a2336c5 100644 --- a/common-kex.c +++ b/common-kex.c @@ -457,7 +457,6 @@ void recv_msg_kexinit() { /* the rest of ses.kexhashbuf will be done after DH exchange */ ses.kexstate.recvkexinit = 1; -// ses.expecting = 0; // client matt TRACE(("leave recv_msg_kexinit")) } @@ -683,7 +682,7 @@ static void read_kex_algos() { buf_eatstring(ses.payload); /* first_kex_packet_follows */ - if (buf_getbyte(ses.payload)) { + if (buf_getbool(ses.payload)) { ses.kexstate.firstfollows = 1; /* if the guess wasn't good, we ignore the packet sent */ if (!allgood) { diff --git a/debug.h b/debug.h index 7b1e2b5..93cb891 100644 --- a/debug.h +++ b/debug.h @@ -39,7 +39,7 @@ * Caution: Don't use this in an unfriendly environment (ie unfirewalled), * since the printing may not sanitise strings etc. This will add a reasonable * amount to your executable size. */ - //#define DEBUG_TRACE +/*#define DEBUG_TRACE */ /* All functions writing to the cleartext payload buffer call * CHECKCLEARTOWRITE() before writing. This is only really useful if you're diff --git a/dss.c b/dss.c index 6429ede..7b3d9d4 100644 --- a/dss.c +++ b/dss.c @@ -261,6 +261,7 @@ out: } #endif /* DROPBEAR_SIGNKEY_VERIFY */ +#ifdef DSS_PROTOK /* convert an unsigned mp into an array of bytes, malloced. * This array must be freed after use, len contains the length of the array, * if len != NULL */ @@ -279,6 +280,7 @@ static unsigned char* mptobytes(mp_int *mp, int *len) { } return ret; } +#endif /* Sign the data presented with key, writing the signature contents * to the buffer diff --git a/kex.h b/kex.h index 01626ed..92b6c42 100644 --- a/kex.h +++ b/kex.h @@ -37,10 +37,10 @@ void gen_kexdh_vals(mp_int *dh_pub, mp_int *dh_priv); void kexdh_comb_key(mp_int *dh_pub_us, mp_int *dh_priv, mp_int *dh_pub_them, sign_key *hostkey); -void recv_msg_kexdh_init(); // server +void recv_msg_kexdh_init(); /* server */ -void send_msg_kexdh_init(); // client -void recv_msg_kexdh_reply(); // client +void send_msg_kexdh_init(); /* client */ +void recv_msg_kexdh_reply(); /* client */ extern const unsigned char dh_p_val[]; #define DH_P_LEN 128 /* The length of the dh_p_val array */ diff --git a/scp.c b/scp.c index e356b8b..ccb6c2a 100644 --- a/scp.c +++ b/scp.c @@ -244,9 +244,6 @@ main(int argc, char **argv) extern char *optarg; extern int optind; - /* hack, seems to work */ -// __progname = argv[0]; - args.list = NULL; addargs(&args, "ssh"); /* overwritten with ssh_program */ addargs(&args, "-x"); diff --git a/svr-authpam.c b/svr-authpam.c index e045b74..fe1f123 100644 --- a/svr-authpam.c +++ b/svr-authpam.c @@ -155,7 +155,7 @@ void svr_auth_pam() { unsigned char changepw; /* check if client wants to change password */ - changepw = buf_getbyte(ses.payload); + changepw = buf_getbool(ses.payload); if (changepw) { /* not implemented by this server */ send_msg_userauth_failure(0, 1); diff --git a/svr-authpasswd.c b/svr-authpasswd.c index 4348817..5be1e2a 100644 --- a/svr-authpasswd.c +++ b/svr-authpasswd.c @@ -71,7 +71,7 @@ void svr_auth_password() { } /* check if client wants to change password */ - changepw = buf_getbyte(ses.payload); + changepw = buf_getbool(ses.payload); if (changepw) { /* not implemented by this server */ send_msg_userauth_failure(0, 1); diff --git a/svr-authpubkey.c b/svr-authpubkey.c index 5daba0f..dcd59f0 100644 --- a/svr-authpubkey.c +++ b/svr-authpubkey.c @@ -64,7 +64,7 @@ void svr_auth_pubkey() { /* 0 indicates user just wants to check if key can be used, 1 is an * actual attempt*/ - testkey = (buf_getbyte(ses.payload) == 0); + testkey = (buf_getbool(ses.payload) == 0); algo = buf_getstring(ses.payload, &algolen); keybloblen = buf_getint(ses.payload); diff --git a/svr-chansession.c b/svr-chansession.c index c04d592..90c82a7 100644 --- a/svr-chansession.c +++ b/svr-chansession.c @@ -305,7 +305,7 @@ static void chansessionrequest(struct Channel *channel) { TRACE(("enter chansessionrequest")) type = buf_getstring(ses.payload, &typelen); - wantreply = buf_getbyte(ses.payload); + wantreply = buf_getbool(ses.payload); if (typelen > MAX_NAME_LEN) { TRACE(("leave chansessionrequest: type too long")) /* XXX send error?*/ diff --git a/svr-tcpfwd.c b/svr-tcpfwd.c index 7fbc609..3acc4ff 100644 --- a/svr-tcpfwd.c +++ b/svr-tcpfwd.c @@ -78,7 +78,7 @@ void recv_msg_global_request_remotetcp() { } reqname = buf_getstring(ses.payload, &namelen); - wantreply = buf_getbyte(ses.payload); + wantreply = buf_getbool(ses.payload); if (namelen > MAXNAMLEN) { TRACE(("name len is wrong: %d", namelen)) diff --git a/svr-x11fwd.c b/svr-x11fwd.c index e15fb82..cbc8a79 100644 --- a/svr-x11fwd.c +++ b/svr-x11fwd.c @@ -52,7 +52,7 @@ int x11req(struct ChanSess * chansess) { return DROPBEAR_FAILURE; } - chansess->x11singleconn = buf_getbyte(ses.payload); + chansess->x11singleconn = buf_getbool(ses.payload); chansess->x11authprot = buf_getstring(ses.payload, NULL); chansess->x11authcookie = buf_getstring(ses.payload, NULL); chansess->x11screennum = buf_getint(ses.payload); -- cgit v1.2.3 From 347e8bd83917f5f20b2b5724a87682cfe8a237fa Mon Sep 17 00:00:00 2001 From: Matt Johnston Date: Wed, 4 May 2005 15:22:40 +0000 Subject: Fix memory leak (reported by Boris Berezovsky) --HG-- extra : convert_revision : 22fe832906de79fb9c641451acce4551bbce9a0c --- dss.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'dss.c') diff --git a/dss.c b/dss.c index 7b3d9d4..5cf018d 100644 --- a/dss.c +++ b/dss.c @@ -419,7 +419,7 @@ void buf_put_dss_sign(buffer* buf, dss_key *key, const unsigned char* data, mp_clear(&dss_s); buf_incrwritepos(buf, writelen); - mp_clear_multi(&dss_k, &dss_temp1, &dss_temp1, &dss_r, &dss_s, + mp_clear_multi(&dss_k, &dss_temp1, &dss_temp2, &dss_r, &dss_s, &dss_m, NULL); /* create the signature to return */ -- cgit v1.2.3 From cf585ba1dee7a7e1f2fbc90d2251d99b7da66a7e Mon Sep 17 00:00:00 2001 From: Matt Johnston Date: Thu, 5 May 2005 03:58:21 +0000 Subject: - refactored random mp_int generation and byte->mp_int code - added RSA blinding --HG-- extra : convert_revision : 5d5b4657a24a1c8f53c6fc45d5ec29ddb85fb45a --- bignum.c | 4 +-- bignum.h | 2 +- common-kex.c | 24 +++-------------- dss.c | 30 ++++++--------------- gendss.c | 28 +++----------------- genrsa.c | 5 +--- random.c | 36 +++++++++++++++++++++++++ random.h | 3 +++ rsa.c | 86 +++++++++++++++++++++++++++++++++++++++--------------------- 9 files changed, 115 insertions(+), 103 deletions(-) (limited to 'dss.c') diff --git a/bignum.c b/bignum.c index 97901fb..60b5220 100644 --- a/bignum.c +++ b/bignum.c @@ -52,9 +52,9 @@ void m_mp_init_multi(mp_int *mp, ...) va_end(args); } -void bytestomp(mp_int *mp, unsigned char* bytes, unsigned int len) { +void bytes_to_mp(mp_int *mp, const unsigned char* bytes, unsigned int len) { - if (mp_read_unsigned_bin(mp, bytes, len) != MP_OKAY) { + if (mp_read_unsigned_bin(mp, (unsigned char*)bytes, len) != MP_OKAY) { dropbear_exit("mem alloc error"); } } diff --git a/bignum.h b/bignum.h index 2a807af..042f811 100644 --- a/bignum.h +++ b/bignum.h @@ -29,7 +29,7 @@ void m_mp_init(mp_int *mp); void m_mp_init_multi(mp_int *mp, ...); -void bytestomp(mp_int *mp, unsigned char* bytes, unsigned int len); +void bytes_to_mp(mp_int *mp, const unsigned char* bytes, unsigned int len); void sha1_process_mp(hash_state *hs, mp_int *mp); #endif /* _BIGNUM_H_ */ diff --git a/common-kex.c b/common-kex.c index a2336c5..8a8aa93 100644 --- a/common-kex.c +++ b/common-kex.c @@ -469,18 +469,13 @@ void gen_kexdh_vals(mp_int *dh_pub, mp_int *dh_priv) { DEF_MP_INT(dh_p); DEF_MP_INT(dh_q); DEF_MP_INT(dh_g); - unsigned char randbuf[DH_P_LEN]; - int dh_q_len; TRACE(("enter send_msg_kexdh_reply")) m_mp_init_multi(&dh_g, &dh_p, &dh_q, NULL); /* read the prime and generator*/ - if (mp_read_unsigned_bin(&dh_p, (unsigned char*)dh_p_val, DH_P_LEN) - != MP_OKAY) { - dropbear_exit("Diffie-Hellman error"); - } + bytes_to_mp(&dh_p, (unsigned char*)dh_p_val, DH_P_LEN); if (mp_set_int(&dh_g, DH_G_VAL) != MP_OKAY) { dropbear_exit("Diffie-Hellman error"); @@ -495,16 +490,8 @@ void gen_kexdh_vals(mp_int *dh_pub, mp_int *dh_priv) { dropbear_exit("Diffie-Hellman error"); } - dh_q_len = mp_unsigned_bin_size(&dh_q); - - /* calculate our random value dh_y */ - do { - assert((unsigned int)dh_q_len <= sizeof(randbuf)); - genrandom(randbuf, dh_q_len); - if (mp_read_unsigned_bin(dh_priv, randbuf, dh_q_len) != MP_OKAY) { - dropbear_exit("Diffie-Hellman error"); - } - } while (mp_cmp(dh_priv, &dh_q) == MP_GT || mp_cmp_d(dh_priv, 0) != MP_GT); + /* Generate a private portion 0 < dh_priv < dh_q */ + gen_random_mpint(&dh_q, dh_priv); /* f = g^y mod p */ if (mp_exptmod(&dh_g, dh_priv, &dh_p, dh_pub) != MP_OKAY) { @@ -526,10 +513,7 @@ void kexdh_comb_key(mp_int *dh_pub_us, mp_int *dh_priv, mp_int *dh_pub_them, /* read the prime and generator*/ mp_init(&dh_p); - if (mp_read_unsigned_bin(&dh_p, (unsigned char*)dh_p_val, DH_P_LEN) - != MP_OKAY) { - dropbear_exit("Diffie-Hellman error"); - } + bytes_to_mp(&dh_p, dh_p_val, DH_P_LEN); /* Check that dh_pub_them (dh_e or dh_f) is in the range [1, p-1] */ if (mp_cmp(dh_pub_them, &dh_p) != MP_LT diff --git a/dss.c b/dss.c index 5cf018d..cb877ca 100644 --- a/dss.c +++ b/dss.c @@ -190,10 +190,8 @@ int buf_dss_verify(buffer* buf, dss_key *key, const unsigned char* data, /* create the signature - s' and r' are the received signatures in buf */ /* w = (s')-1 mod q */ /* let val1 = s' */ - if (mp_read_unsigned_bin(&val1, &string[SHA1_HASH_SIZE], SHA1_HASH_SIZE) - != MP_OKAY) { - goto out; - } + bytes_to_mp(&val1, &string[SHA1_HASH_SIZE], SHA1_HASH_SIZE); + if (mp_cmp(&val1, key->q) != MP_LT) { TRACE(("verify failed, s' >= q")) goto out; @@ -205,9 +203,8 @@ int buf_dss_verify(buffer* buf, dss_key *key, const unsigned char* data, /* u1 = ((SHA(M')w) mod q */ /* let val1 = SHA(M') = msghash */ - if (mp_read_unsigned_bin(&val1, msghash, SHA1_HASH_SIZE) != MP_OKAY) { - goto out; - } + bytes_to_mp(&val1, msghash, SHA1_HASH_SIZE); + /* let val3 = u1 = ((SHA(M')w) mod q */ if (mp_mulmod(&val1, &val2, key->q, &val3) != MP_OKAY) { goto out; @@ -215,10 +212,7 @@ int buf_dss_verify(buffer* buf, dss_key *key, const unsigned char* data, /* u2 = ((r')w) mod q */ /* let val1 = r' */ - if (mp_read_unsigned_bin(&val1, &string[0], SHA1_HASH_SIZE) - != MP_OKAY) { - goto out; - } + bytes_to_mp(&val1, &string[0], SHA1_HASH_SIZE); if (mp_cmp(&val1, key->q) != MP_LT) { TRACE(("verify failed, r' >= q")) goto out; @@ -306,8 +300,6 @@ void buf_put_dss_sign(buffer* buf, dss_key *key, const unsigned char* data, unsigned char *privkeytmp; unsigned char proto_k[SHA512_HASH_SIZE]; DEF_MP_INT(dss_protok); -#else - unsigned char kbuf[SHA1_HASH_SIZE]; #endif DEF_MP_INT(dss_k); DEF_MP_INT(dss_m); @@ -345,22 +337,16 @@ void buf_put_dss_sign(buffer* buf, dss_key *key, const unsigned char* data, /* generate k */ m_mp_init(&dss_protok); - bytestomp(&dss_protok, proto_k, SHA512_HASH_SIZE); + bytes_to_mp(&dss_protok, proto_k, SHA512_HASH_SIZE); mp_mod(&dss_protok, key->q, &dss_k); mp_clear(&dss_protok); m_burn(proto_k, SHA512_HASH_SIZE); #else /* DSS_PROTOK not defined*/ - do { - genrandom(kbuf, SHA1_HASH_SIZE); - if (mp_read_unsigned_bin(&dss_k, kbuf, SHA1_HASH_SIZE) != MP_OKAY) { - dropbear_exit("dss error"); - } - } while (mp_cmp(&dss_k, key->q) == MP_GT || mp_cmp_d(&dss_k, 0) != MP_GT); - m_burn(kbuf, SHA1_HASH_SIZE); + gen_random_mpint(key->q, &dss_k); #endif /* now generate the actual signature */ - bytestomp(&dss_m, msghash, SHA1_HASH_SIZE); + bytes_to_mp(&dss_m, msghash, SHA1_HASH_SIZE); /* g^k mod p */ if (mp_exptmod(key->g, &dss_k, key->p, &dss_temp1) != MP_OKAY) { diff --git a/gendss.c b/gendss.c index d589722..bf46d3d 100644 --- a/gendss.c +++ b/gendss.c @@ -77,10 +77,7 @@ static void getq(dss_key *key) { buf[0] |= 0x80; /* top bit high */ buf[QSIZE-1] |= 0x01; /* bottom bit high */ - if (mp_read_unsigned_bin(key->q, buf, QSIZE) != MP_OKAY) { - fprintf(stderr, "dss key generation failed\n"); - exit(1); - } + bytes_to_mp(key->q, buf, QSIZE); /* 18 rounds are required according to HAC */ if (mp_prime_next_prime(key->q, 18, 0) != MP_OKAY) { @@ -116,10 +113,7 @@ static void getp(dss_key *key, unsigned int size) { buf[0] |= 0x80; /* set the top bit high */ /* X is a random mp_int */ - if (mp_read_unsigned_bin(&tempX, buf, size) != MP_OKAY) { - fprintf(stderr, "dss key generation failed\n"); - exit(1); - } + bytes_to_mp(&tempX, buf, size); /* C = X mod 2q */ if (mp_mod(&tempX, &temp2q, &tempC) != MP_OKAY) { @@ -147,6 +141,7 @@ static void getp(dss_key *key, unsigned int size) { } while (!result); mp_clear_multi(&tempX, &tempC, &tempP, &temp2q, NULL); + m_burn(buf, size); m_free(buf); } @@ -189,22 +184,7 @@ static void getg(dss_key * key) { static void getx(dss_key *key) { - DEF_MP_INT(val); - char buf[QSIZE]; - - m_mp_init(&val); - - do { - genrandom(buf, QSIZE); - - if (mp_read_unsigned_bin(&val, buf, QSIZE) != MP_OKAY) { - fprintf(stderr, "dss key generation failed\n"); - } - } while ((mp_cmp_d(&val, 1) == MP_GT) && (mp_cmp(&val, key->q) == MP_LT)); - - mp_copy(&val, key->x); - mp_clear(&val); - + gen_random_mpint(key->q, key->x); } static void gety(dss_key *key) { diff --git a/genrsa.c b/genrsa.c index 5711519..73a7984 100644 --- a/genrsa.c +++ b/genrsa.c @@ -108,10 +108,7 @@ static void getrsaprime(mp_int* prime, mp_int *primeminus, genrandom(buf, size+1); buf[0] |= 0x80; /* MSB set */ - if (mp_read_unsigned_bin(prime, buf, size+1) != MP_OKAY) { - fprintf(stderr, "rsa generation failed\n"); - exit(1); - } + bytes_to_mp(prime, buf, size+1); /* find the next integer which is prime, 8 round of miller-rabin */ if (mp_prime_next_prime(prime, 8, 0) != MP_OKAY) { diff --git a/random.c b/random.c index c69f641..2b2777a 100644 --- a/random.c +++ b/random.c @@ -25,6 +25,7 @@ #include "includes.h" #include "buffer.h" #include "dbutil.h" +#include "bignum.h" int donerandinit = 0; @@ -159,3 +160,38 @@ void genrandom(unsigned char* buf, unsigned int len) { } m_burn(hash, sizeof(hash)); } + +/* Generates a random mp_int. + * max is a *mp_int specifying an upper bound. + * rand must be an initialised *mp_int for the result. + * the result rand satisfies: 0 < rand < max + * */ +void gen_random_mpint(mp_int *max, mp_int *rand) { + + unsigned char *randbuf = NULL; + unsigned int len = 0; + const char masks[] = {0xff, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f}; + + const int size_bits = mp_count_bits(max); + + len = size_bits / 8; + if ((size_bits % 8) != 0) { + len += 1; + } + + randbuf = (unsigned char*)m_malloc(len); + do { + genrandom(randbuf, len); + /* Mask out the unrequired bits - mp_read_unsigned_bin expects + * MSB first.*/ + randbuf[0] &= masks[size_bits % 8]; + + bytes_to_mp(rand, randbuf, len); + + /* keep regenerating until we get one satisfying + * 0 < rand < max */ + } while ( ( (max != NULL) && (mp_cmp(rand, max) != MP_LT) ) + || (mp_cmp_d(rand, 0) != MP_GT) ); + m_burn(randbuf, len); + m_free(randbuf); +} diff --git a/random.h b/random.h index 91aa342..5ec1f24 100644 --- a/random.h +++ b/random.h @@ -25,8 +25,11 @@ #ifndef _RANDOM_H_ #define _RANDOM_H_ +struct mp_int; + void seedrandom(); void genrandom(unsigned char* buf, int len); void addrandom(unsigned char* buf, int len); +void gen_random_mpint(mp_int *max, mp_int *rand); #endif /* _RANDOM_H_ */ diff --git a/rsa.c b/rsa.c index 1ac0357..8b24360 100644 --- a/rsa.c +++ b/rsa.c @@ -38,8 +38,9 @@ #ifdef DROPBEAR_RSA -static mp_int * rsa_pad_em(rsa_key * key, - const unsigned char * data, unsigned int len); +static void rsa_pad_em(rsa_key * key, + const unsigned char * data, unsigned int len, + mp_int * rsa_em); /* Load a public rsa key from a buffer, initialising the values. * The key will have the same format as buf_put_rsa_key. @@ -203,14 +204,14 @@ int buf_rsa_verify(buffer * buf, rsa_key *key, const unsigned char* data, unsigned int slen; DEF_MP_INT(rsa_s); DEF_MP_INT(rsa_mdash); - mp_int *rsa_em = NULL; + DEF_MP_INT(rsa_em); int ret = DROPBEAR_FAILURE; TRACE(("enter buf_rsa_verify")) assert(key != NULL); - m_mp_init_multi(&rsa_mdash, &rsa_s, NULL); + m_mp_init_multi(&rsa_mdash, &rsa_s, &rsa_em, NULL); slen = buf_getint(buf); if (slen != (unsigned int)mp_unsigned_bin_size(key->n)) { @@ -231,29 +232,25 @@ int buf_rsa_verify(buffer * buf, rsa_key *key, const unsigned char* data, } /* create the magic PKCS padded value */ - rsa_em = rsa_pad_em(key, data, len); + rsa_pad_em(key, data, len, &rsa_em); if (mp_exptmod(&rsa_s, key->e, key->n, &rsa_mdash) != MP_OKAY) { TRACE(("failed exptmod rsa_s")) goto out; } - if (mp_cmp(rsa_em, &rsa_mdash) == MP_EQ) { + if (mp_cmp(&rsa_em, &rsa_mdash) == MP_EQ) { /* signature is valid */ TRACE(("success!")) ret = DROPBEAR_SUCCESS; } out: - if (rsa_em) { - mp_clear(rsa_em); - m_free(rsa_em); - } - mp_clear_multi(&rsa_mdash, &rsa_s, NULL); + mp_clear_multi(&rsa_mdash, &rsa_s, &rsa_em, NULL); TRACE(("leave buf_rsa_verify: ret %d", ret)) return ret; - } + #endif /* DROPBEAR_SIGNKEY_VERIFY */ /* Sign the data presented with key, writing the signature contents @@ -264,22 +261,56 @@ void buf_put_rsa_sign(buffer* buf, rsa_key *key, const unsigned char* data, unsigned int nsize, ssize; unsigned int i; DEF_MP_INT(rsa_s); - mp_int *rsa_em = NULL; + DEF_MP_INT(rsa_tmp1); + DEF_MP_INT(rsa_tmp2); + DEF_MP_INT(rsa_tmp3); + unsigned char *tmpbuf; TRACE(("enter buf_put_rsa_sign")) assert(key != NULL); - rsa_em = rsa_pad_em(key, data, len); + m_mp_init_multi(&rsa_s, &rsa_tmp1, &rsa_tmp2, &rsa_tmp3, NULL); - m_mp_init(&rsa_s); + rsa_pad_em(key, data, len, &rsa_tmp1); /* the actual signing of the padded data */ + +#define RSA_BLINDING +#ifdef RSA_BLINDING + + /* With blinding, s = (r^(-1))((em)*r^e)^d mod n */ + + /* generate the r blinding value */ + /* rsa_tmp2 is r */ + gen_random_mpint(key->n, &rsa_tmp2); + + /* rsa_tmp1 is em */ + /* em' = em * r^e mod n */ + + mp_exptmod(&rsa_tmp2, key->e, key->n, &rsa_s); /* rsa_s used as a temp var*/ + mp_invmod(&rsa_tmp2, key->n, &rsa_tmp3); + mp_mulmod(&rsa_tmp1, &rsa_s, key->n, &rsa_tmp2); + + /* rsa_tmp2 is em' */ + /* s' = (em')^d mod n */ + mp_exptmod(&rsa_tmp2, key->d, key->n, &rsa_tmp1); + + /* rsa_tmp1 is s' */ + /* rsa_tmp3 is r^(-1) mod n */ + /* s = (s')r^(-1) mod n */ + mp_mulmod(&rsa_tmp1, &rsa_tmp3, key->n, &rsa_s); + +#else + /* s = em^d mod n */ - if (mp_exptmod(rsa_em, key->d, key->n, &rsa_s) != MP_OKAY) { + /* rsa_tmp1 is em */ + if (mp_exptmod(&rsa_tmp1, key->d, key->n, &rsa_s) != MP_OKAY) { dropbear_exit("rsa error"); } - mp_clear(rsa_em); - m_free(rsa_em); + +#endif /* RSA_BLINDING */ + + mp_clear_multi(&rsa_tmp1, &rsa_tmp2, &rsa_tmp3, NULL); /* create the signature to return */ buf_putstring(buf, SSH_SIGNKEY_RSA, SSH_SIGNKEY_RSA_LEN); @@ -318,9 +349,12 @@ void buf_put_rsa_sign(buffer* buf, rsa_key *key, const unsigned char* data, * * prefix is the ASN1 designator prefix, * hex 30 21 30 09 06 05 2B 0E 03 02 1A 05 00 04 14 + * + * rsa_em must be a pointer to an initialised mp_int. */ -static mp_int * rsa_pad_em(rsa_key * key, - const unsigned char * data, unsigned int len) { +static void rsa_pad_em(rsa_key * key, + const unsigned char * data, unsigned int len, + mp_int * rsa_em) { /* ASN1 designator (including the 0x00 preceding) */ const char rsa_asn1_magic[] = @@ -330,7 +364,6 @@ static mp_int * rsa_pad_em(rsa_key * key, buffer * rsa_EM = NULL; hash_state hs; unsigned int nsize; - mp_int * rsa_em = NULL; assert(key != NULL); assert(data != NULL); @@ -358,16 +391,9 @@ static mp_int * rsa_pad_em(rsa_key * key, /* Create the mp_int from the encoded bytes */ buf_setpos(rsa_EM, 0); - rsa_em = (mp_int*)m_malloc(sizeof(mp_int)); - m_mp_init(rsa_em); - if (mp_read_unsigned_bin(rsa_em, buf_getptr(rsa_EM, rsa_EM->size), - rsa_EM->size) != MP_OKAY) { - dropbear_exit("rsa error"); - } + bytes_to_mp(rsa_em, buf_getptr(rsa_EM, rsa_EM->size), + rsa_EM->size); buf_free(rsa_EM); - - return rsa_em; - } #endif /* DROPBEAR_RSA */ -- cgit v1.2.3 From 53681cbdb64fbd4a4dc18be76781c94a468a6042 Mon Sep 17 00:00:00 2001 From: Matt Johnston Date: Mon, 5 Sep 2005 15:16:10 +0000 Subject: * use own assertions which should get logged properly --HG-- extra : convert_revision : 3dc365619f0840ab5781660b1257a9f22c05d3fe --- buffer.c | 4 ++-- circbuffer.c | 14 +++++++------- common-channel.c | 14 +++++++------- common-session.c | 2 +- dbutil.c | 4 ++++ dbutil.h | 4 ++++ dss.c | 16 ++++++++-------- keyimport.c | 18 +++++++++--------- packet.c | 10 +++++----- queue.c | 4 ++-- rsa.c | 20 ++++++++++---------- svr-authpubkey.c | 1 - svr-chansession.c | 14 +++++++------- svr-main.c | 2 +- 14 files changed, 67 insertions(+), 60 deletions(-) (limited to 'dss.c') diff --git a/buffer.c b/buffer.c index 97045ff..579fa6f 100644 --- a/buffer.c +++ b/buffer.c @@ -153,7 +153,7 @@ void buf_incrpos(buffer* buf, int incr) { unsigned char buf_getbyte(buffer* buf) { /* This check is really just ==, but the >= allows us to check for the - * assert()able case of pos > len, which should _never_ happen. */ + * bad case of pos > len, which should _never_ happen. */ if (buf->pos >= buf->len) { dropbear_exit("bad buf_getbyte"); } @@ -270,7 +270,7 @@ void buf_putmpint(buffer* buf, mp_int * mp) { unsigned int len, pad = 0; TRACE(("enter buf_putmpint")) - assert(mp != NULL); + dropbear_assert(mp != NULL); if (SIGN(mp) == MP_NEG) { dropbear_exit("negative bignum"); diff --git a/circbuffer.c b/circbuffer.c index 6dc9179..e70087a 100644 --- a/circbuffer.c +++ b/circbuffer.c @@ -66,8 +66,8 @@ unsigned int cbuf_getavail(circbuffer * cbuf) { unsigned int cbuf_readlen(circbuffer *cbuf) { - assert(((2*cbuf->size)+cbuf->writepos-cbuf->readpos)%cbuf->size == cbuf->used%cbuf->size); - assert(((2*cbuf->size)+cbuf->readpos-cbuf->writepos)%cbuf->size == (cbuf->size-cbuf->used)%cbuf->size); + dropbear_assert(((2*cbuf->size)+cbuf->writepos-cbuf->readpos)%cbuf->size == cbuf->used%cbuf->size); + dropbear_assert(((2*cbuf->size)+cbuf->readpos-cbuf->writepos)%cbuf->size == (cbuf->size-cbuf->used)%cbuf->size); if (cbuf->used == 0) { TRACE(("cbuf_readlen: unused buffer")) @@ -83,9 +83,9 @@ unsigned int cbuf_readlen(circbuffer *cbuf) { unsigned int cbuf_writelen(circbuffer *cbuf) { - assert(cbuf->used <= cbuf->size); - assert(((2*cbuf->size)+cbuf->writepos-cbuf->readpos)%cbuf->size == cbuf->used%cbuf->size); - assert(((2*cbuf->size)+cbuf->readpos-cbuf->writepos)%cbuf->size == (cbuf->size-cbuf->used)%cbuf->size); + dropbear_assert(cbuf->used <= cbuf->size); + dropbear_assert(((2*cbuf->size)+cbuf->writepos-cbuf->readpos)%cbuf->size == cbuf->used%cbuf->size); + dropbear_assert(((2*cbuf->size)+cbuf->readpos-cbuf->writepos)%cbuf->size == (cbuf->size-cbuf->used)%cbuf->size); if (cbuf->used == cbuf->size) { TRACE(("cbuf_writelen: full buffer")) @@ -122,7 +122,7 @@ void cbuf_incrwrite(circbuffer *cbuf, unsigned int len) { } cbuf->used += len; - assert(cbuf->used <= cbuf->size); + dropbear_assert(cbuf->used <= cbuf->size); cbuf->writepos = (cbuf->writepos + len) % cbuf->size; } @@ -132,7 +132,7 @@ void cbuf_incrread(circbuffer *cbuf, unsigned int len) { dropbear_exit("bad cbuf read"); } - assert(cbuf->used >= len); + dropbear_assert(cbuf->used >= len); cbuf->used -= len; cbuf->readpos = (cbuf->readpos + len) % cbuf->size; } diff --git a/common-channel.c b/common-channel.c index dfff1b4..12e7aa7 100644 --- a/common-channel.c +++ b/common-channel.c @@ -409,9 +409,9 @@ static void writechannel(struct Channel* channel, int fd, circbuffer *cbuf) { channel->recvdonelen = 0; } - assert(channel->recvwindow <= RECV_MAXWINDOW); - assert(channel->recvwindow <= cbuf_getavail(channel->writebuf)); - assert(channel->extrabuf == NULL || + dropbear_assert(channel->recvwindow <= RECV_MAXWINDOW); + dropbear_assert(channel->recvwindow <= cbuf_getavail(channel->writebuf)); + dropbear_assert(channel->extrabuf == NULL || channel->recvwindow <= cbuf_getavail(channel->extrabuf)); @@ -603,14 +603,14 @@ static void send_msg_channel_data(struct Channel *channel, int isextended, CHECKCLEARTOWRITE(); - assert(!channel->sentclosed); + dropbear_assert(!channel->sentclosed); if (isextended) { fd = channel->errfd; } else { fd = channel->outfd; } - assert(fd >= 0); + dropbear_assert(fd >= 0); maxlen = MIN(channel->transwindow, channel->transmaxpacket); /* -(1+4+4) is SSH_MSG_CHANNEL_DATA, channel number, string length, and @@ -718,9 +718,9 @@ void common_recv_msg_channel_data(struct Channel *channel, int fd, len -= buflen; } - assert(channel->recvwindow >= datalen); + dropbear_assert(channel->recvwindow >= datalen); channel->recvwindow -= datalen; - assert(channel->recvwindow <= RECV_MAXWINDOW); + dropbear_assert(channel->recvwindow <= RECV_MAXWINDOW); TRACE(("leave recv_msg_channel_data")) } diff --git a/common-session.c b/common-session.c index 06cdbd1..a8cab87 100644 --- a/common-session.c +++ b/common-session.c @@ -126,7 +126,7 @@ void session_loop(void(*loophandler)()) { timeout.tv_usec = 0; FD_ZERO(&writefd); FD_ZERO(&readfd); - assert(ses.payload == NULL); + dropbear_assert(ses.payload == NULL); if (ses.sock != -1) { FD_SET(ses.sock, &readfd); if (!isempty(&ses.writequeue)) { diff --git a/dbutil.c b/dbutil.c index 45c720e..23e46cc 100644 --- a/dbutil.c +++ b/dbutil.c @@ -110,6 +110,10 @@ static void generic_dropbear_exit(int exitcode, const char* format, exit(exitcode); } +void fail_assert(const char* expr, const char* file, int line) { + dropbear_exit("failed assertion (%s:%d): `%s'", file, line, expr); +} + static void generic_dropbear_log(int UNUSED(priority), const char* format, va_list param) { diff --git a/dbutil.h b/dbutil.h index d904949..eef75e3 100644 --- a/dbutil.h +++ b/dbutil.h @@ -39,6 +39,7 @@ extern void (*_dropbear_log)(int priority, const char* format, va_list param); void dropbear_exit(const char* format, ...); void dropbear_close(const char* format, ...); void dropbear_log(int priority, const char* format, ...); +void fail_assert(const char* expr, const char* file, int line); #ifdef DEBUG_TRACE void dropbear_trace(const char* format, ...); void printhex(const char * label, const unsigned char * buf, int len); @@ -66,4 +67,7 @@ void setnonblocking(int fd); /* Used to force mp_ints to be initialised */ #define DEF_MP_INT(X) mp_int X = {0, 0, 0, NULL} +/* Dropbear assertion */ +#define dropbear_assert(X) do { if (!(X)) { fail_assert(#X, __FILE__, __LINE__); } } while (0) + #endif /* _DBUTIL_H_ */ diff --git a/dss.c b/dss.c index cb877ca..84a093c 100644 --- a/dss.c +++ b/dss.c @@ -46,7 +46,7 @@ int buf_get_dss_pub_key(buffer* buf, dss_key *key) { TRACE(("enter buf_get_dss_pub_key")) - assert(key != NULL); + dropbear_assert(key != NULL); key->p = m_malloc(sizeof(mp_int)); key->q = m_malloc(sizeof(mp_int)); key->g = m_malloc(sizeof(mp_int)); @@ -80,7 +80,7 @@ int buf_get_dss_priv_key(buffer* buf, dss_key *key) { int ret = DROPBEAR_FAILURE; - assert(key != NULL); + dropbear_assert(key != NULL); ret = buf_get_dss_pub_key(buf, key); if (ret == DROPBEAR_FAILURE) { @@ -137,7 +137,7 @@ void dss_key_free(dss_key *key) { */ void buf_put_dss_pub_key(buffer* buf, dss_key *key) { - assert(key != NULL); + dropbear_assert(key != NULL); buf_putstring(buf, SSH_SIGNKEY_DSS, SSH_SIGNKEY_DSS_LEN); buf_putmpint(buf, key->p); buf_putmpint(buf, key->q); @@ -149,7 +149,7 @@ void buf_put_dss_pub_key(buffer* buf, dss_key *key) { /* Same as buf_put_dss_pub_key, but with the private "x" key appended */ void buf_put_dss_priv_key(buffer* buf, dss_key *key) { - assert(key != NULL); + dropbear_assert(key != NULL); buf_put_dss_pub_key(buf, key); buf_putmpint(buf, key->x); @@ -172,7 +172,7 @@ int buf_dss_verify(buffer* buf, dss_key *key, const unsigned char* data, int stringlen; TRACE(("enter buf_dss_verify")) - assert(key != NULL); + dropbear_assert(key != NULL); m_mp_init_multi(&val1, &val2, &val3, &val4, NULL); @@ -310,7 +310,7 @@ void buf_put_dss_sign(buffer* buf, dss_key *key, const unsigned char* data, hash_state hs; TRACE(("enter buf_put_dss_sign")) - assert(key != NULL); + dropbear_assert(key != NULL); /* hash the data */ sha1_init(&hs); @@ -380,7 +380,7 @@ void buf_put_dss_sign(buffer* buf, dss_key *key, const unsigned char* data, buf_putint(buf, 2*SHA1_HASH_SIZE); writelen = mp_unsigned_bin_size(&dss_r); - assert(writelen <= SHA1_HASH_SIZE); + dropbear_assert(writelen <= SHA1_HASH_SIZE); /* need to pad to 160 bits with leading zeros */ for (i = 0; i < SHA1_HASH_SIZE - writelen; i++) { buf_putbyte(buf, 0); @@ -393,7 +393,7 @@ void buf_put_dss_sign(buffer* buf, dss_key *key, const unsigned char* data, buf_incrwritepos(buf, writelen); writelen = mp_unsigned_bin_size(&dss_s); - assert(writelen <= SHA1_HASH_SIZE); + dropbear_assert(writelen <= SHA1_HASH_SIZE); /* need to pad to 160 bits with leading zeros */ for (i = 0; i < SHA1_HASH_SIZE - writelen; i++) { buf_putbyte(buf, 0); diff --git a/keyimport.c b/keyimport.c index 9f2305d..589b9cb 100644 --- a/keyimport.c +++ b/keyimport.c @@ -203,7 +203,7 @@ static void base64_encode_fp(FILE * fp, unsigned char *data, unsigned long outlen; int rawcpl; rawcpl = cpl * 3 / 4; - assert((unsigned int)cpl < sizeof(out)); + dropbear_assert((unsigned int)cpl < sizeof(out)); while (datalen > 0) { n = (datalen < rawcpl ? datalen : rawcpl); @@ -714,7 +714,7 @@ static int openssh_write(const char *filename, sign_key *key, } #endif - assert(keytype != -1); + dropbear_assert(keytype != -1); /* * Fetch the key blobs. @@ -913,7 +913,7 @@ static int openssh_write(const char *filename, sign_key *key, * with the same value. Those are all removed and the rest is * returned. */ - assert(pos == len); + dropbear_assert(pos == len); while (pos < outlen) { outblob[pos++] = outlen - len; } @@ -1491,7 +1491,7 @@ sign_key *sshcom_read(const char *filename, char *passphrase) privlen = pos - publen; } - assert(privlen > 0); /* should have bombed by now if not */ + dropbear_assert(privlen > 0); /* should have bombed by now if not */ retkey = snew(struct ssh2_userkey); retkey->alg = alg; @@ -1557,7 +1557,7 @@ int sshcom_write(const char *filename, sign_key *key, pos += ssh2_read_mpint(privblob+pos, privlen-pos, &q); pos += ssh2_read_mpint(privblob+pos, privlen-pos, &iqmp); - assert(e.start && iqmp.start); /* can't go wrong */ + dropbear_assert(e.start && iqmp.start); /* can't go wrong */ numbers[0] = e; numbers[1] = d; @@ -1581,7 +1581,7 @@ int sshcom_write(const char *filename, sign_key *key, pos = 0; pos += ssh2_read_mpint(privblob+pos, privlen-pos, &x); - assert(y.start && x.start); /* can't go wrong */ + dropbear_assert(y.start && x.start); /* can't go wrong */ numbers[0] = p; numbers[1] = g; @@ -1593,7 +1593,7 @@ int sshcom_write(const char *filename, sign_key *key, initial_zero = 1; type = "dl-modp{sign{dsa-nist-sha1},dh{plain}}"; } else { - assert(0); /* zoinks! */ + dropbear_assert(0); /* zoinks! */ } /* @@ -1637,13 +1637,13 @@ int sshcom_write(const char *filename, sign_key *key, } ciphertext = (char *)outblob+lenpos+4; cipherlen = pos - (lenpos+4); - assert(!passphrase || cipherlen % 8 == 0); + dropbear_assert(!passphrase || cipherlen % 8 == 0); /* Wrap up the encrypted blob string. */ PUT_32BIT(outblob+lenpos, cipherlen); /* And finally fill in the total length field. */ PUT_32BIT(outblob+4, pos); - assert(pos < outlen); + dropbear_assert(pos < outlen); /* * Encrypt the key. diff --git a/packet.c b/packet.c index 6c90a76..b2c6174 100644 --- a/packet.c +++ b/packet.c @@ -53,13 +53,13 @@ void write_packet() { buffer * writebuf = NULL; TRACE(("enter write_packet")) - assert(!isempty(&ses.writequeue)); + dropbear_assert(!isempty(&ses.writequeue)); /* Get the next buffer in the queue of encrypted packets to write*/ writebuf = (buffer*)examine(&ses.writequeue); len = writebuf->len - writebuf->pos; - assert(len > 0); + dropbear_assert(len > 0); /* Try to write as much as possible */ written = write(ses.sock, buf_getptr(writebuf, len), len); @@ -118,7 +118,7 @@ void read_packet() { /* Attempt to read the remainder of the packet, note that there * mightn't be any available (EAGAIN) */ - assert(ses.readbuf != NULL); + dropbear_assert(ses.readbuf != NULL); maxlen = ses.readbuf->len - ses.readbuf->pos; len = read(ses.sock, buf_getptr(ses.readbuf, maxlen), maxlen); @@ -162,7 +162,7 @@ static void read_packet_init() { if (ses.readbuf == NULL) { /* start of a new packet */ ses.readbuf = buf_new(INIT_READBUF); - assert(ses.decryptreadbuf == NULL); + dropbear_assert(ses.decryptreadbuf == NULL); ses.decryptreadbuf = buf_new(blocksize); } @@ -600,7 +600,7 @@ static void buf_compress(buffer * dest, buffer * src, unsigned int len) { break; } - assert(ses.keys->trans_zstream->avail_out == 0); + dropbear_assert(ses.keys->trans_zstream->avail_out == 0); /* the buffer has been filled, we must extend. This only happens in * unusual circumstances where the data grows in size after deflate(), diff --git a/queue.c b/queue.c index caf6145..7a80124 100644 --- a/queue.c +++ b/queue.c @@ -42,7 +42,7 @@ void* dequeue(struct Queue* queue) { void* ret; struct Link* oldhead; - assert(!isempty(queue)); + dropbear_assert(!isempty(queue)); ret = queue->head->item; oldhead = queue->head; @@ -62,7 +62,7 @@ void* dequeue(struct Queue* queue) { void *examine(struct Queue* queue) { - assert(!isempty(queue)); + dropbear_assert(!isempty(queue)); return queue->head->item; } diff --git a/rsa.c b/rsa.c index 7248bed..cc16fa0 100644 --- a/rsa.c +++ b/rsa.c @@ -49,7 +49,7 @@ static void rsa_pad_em(rsa_key * key, int buf_get_rsa_pub_key(buffer* buf, rsa_key *key) { TRACE(("enter buf_get_rsa_pub_key")) - assert(key != NULL); + dropbear_assert(key != NULL); key->e = m_malloc(sizeof(mp_int)); key->n = m_malloc(sizeof(mp_int)); m_mp_init_multi(key->e, key->n, NULL); @@ -80,7 +80,7 @@ int buf_get_rsa_pub_key(buffer* buf, rsa_key *key) { * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */ int buf_get_rsa_priv_key(buffer* buf, rsa_key *key) { - assert(key != NULL); + dropbear_assert(key != NULL); TRACE(("enter buf_get_rsa_priv_key")) @@ -163,7 +163,7 @@ void rsa_key_free(rsa_key *key) { void buf_put_rsa_pub_key(buffer* buf, rsa_key *key) { TRACE(("enter buf_put_rsa_pub_key")) - assert(key != NULL); + dropbear_assert(key != NULL); buf_putstring(buf, SSH_SIGNKEY_RSA, SSH_SIGNKEY_RSA_LEN); buf_putmpint(buf, key->e); @@ -178,7 +178,7 @@ void buf_put_rsa_priv_key(buffer* buf, rsa_key *key) { TRACE(("enter buf_put_rsa_priv_key")) - assert(key != NULL); + dropbear_assert(key != NULL); buf_put_rsa_pub_key(buf, key); buf_putmpint(buf, key->d); @@ -209,7 +209,7 @@ int buf_rsa_verify(buffer * buf, rsa_key *key, const unsigned char* data, TRACE(("enter buf_rsa_verify")) - assert(key != NULL); + dropbear_assert(key != NULL); m_mp_init_multi(&rsa_mdash, &rsa_s, &rsa_em, NULL); @@ -267,7 +267,7 @@ void buf_put_rsa_sign(buffer* buf, rsa_key *key, const unsigned char* data, unsigned char *tmpbuf; TRACE(("enter buf_put_rsa_sign")) - assert(key != NULL); + dropbear_assert(key != NULL); m_mp_init_multi(&rsa_s, &rsa_tmp1, &rsa_tmp2, &rsa_tmp3, NULL); @@ -320,7 +320,7 @@ void buf_put_rsa_sign(buffer* buf, rsa_key *key, const unsigned char* data, buf_putint(buf, nsize); /* pad out s to same length as n */ ssize = mp_unsigned_bin_size(&rsa_s); - assert(ssize <= nsize); + dropbear_assert(ssize <= nsize); for (i = 0; i < nsize-ssize; i++) { buf_putbyte(buf, 0x00); } @@ -365,8 +365,8 @@ static void rsa_pad_em(rsa_key * key, hash_state hs; unsigned int nsize; - assert(key != NULL); - assert(data != NULL); + dropbear_assert(key != NULL); + dropbear_assert(data != NULL); nsize = mp_unsigned_bin_size(key->n); rsa_EM = buf_new(nsize-1); @@ -387,7 +387,7 @@ static void rsa_pad_em(rsa_key * key, sha1_done(&hs, buf_getwriteptr(rsa_EM, SHA1_HASH_SIZE)); buf_incrwritepos(rsa_EM, SHA1_HASH_SIZE); - assert(rsa_EM->pos == rsa_EM->size); + dropbear_assert(rsa_EM->pos == rsa_EM->size); /* Create the mp_int from the encoded bytes */ buf_setpos(rsa_EM, 0); diff --git a/svr-authpubkey.c b/svr-authpubkey.c index dcd59f0..a5520e5 100644 --- a/svr-authpubkey.c +++ b/svr-authpubkey.c @@ -266,7 +266,6 @@ static int checkpubkeyperms() { TRACE(("enter checkpubkeyperms")) - assert(ses.authstate.pw); if (ses.authstate.pw->pw_dir == NULL) { goto out; } diff --git a/svr-chansession.c b/svr-chansession.c index 1704c6e..6828537 100644 --- a/svr-chansession.c +++ b/svr-chansession.c @@ -148,8 +148,8 @@ static void send_exitsignalstatus(struct Channel *channel) { static void send_msg_chansess_exitstatus(struct Channel * channel, struct ChanSess * chansess) { - assert(chansess->exit.exitpid != -1); - assert(chansess->exit.exitsignal == -1); + dropbear_assert(chansess->exit.exitpid != -1); + dropbear_assert(chansess->exit.exitsignal == -1); CHECKCLEARTOWRITE(); @@ -170,8 +170,8 @@ static void send_msg_chansess_exitsignal(struct Channel * channel, int i; char* signame = NULL; - assert(chansess->exit.exitpid != -1); - assert(chansess->exit.exitsignal > 0); + dropbear_assert(chansess->exit.exitpid != -1); + dropbear_assert(chansess->exit.exitsignal > 0); CHECKCLEARTOWRITE(); @@ -205,7 +205,7 @@ static int newchansess(struct Channel *channel) { struct ChanSess *chansess; - assert(channel->typedata == NULL); + dropbear_assert(channel->typedata == NULL); chansess = (struct ChanSess*)m_malloc(sizeof(struct ChanSess)); chansess->cmd = NULL; @@ -279,7 +279,7 @@ static void closechansess(struct Channel *channel) { /* clear child pid entries */ for (i = 0; i < svr_ses.childpidsize; i++) { if (svr_ses.childpids[i].chansess == chansess) { - assert(svr_ses.childpids[i].pid > 0); + dropbear_assert(svr_ses.childpids[i].pid > 0); TRACE(("closing pid %d", svr_ses.childpids[i].pid)) TRACE(("exitpid = %d", chansess->exit.exitpid)) svr_ses.childpids[i].pid = -1; @@ -313,7 +313,7 @@ static void chansessionrequest(struct Channel *channel) { } chansess = (struct ChanSess*)channel->typedata; - assert(chansess != NULL); + dropbear_assert(chansess != NULL); TRACE(("type is %s", type)) if (strcmp(type, "window-change") == 0) { diff --git a/svr-main.c b/svr-main.c index e39f3d9..46f6078 100644 --- a/svr-main.c +++ b/svr-main.c @@ -284,7 +284,7 @@ void main_noinetd() { getaddrhostname(&remoteaddr), addrstring); /* don't return */ - assert(0); + dropbear_assert(0); } /* parent */ -- cgit v1.2.3