diff options
Diffstat (limited to 'libs/nixio/src/tls-context.c')
-rw-r--r-- | libs/nixio/src/tls-context.c | 248 |
1 files changed, 0 insertions, 248 deletions
diff --git a/libs/nixio/src/tls-context.c b/libs/nixio/src/tls-context.c deleted file mode 100644 index e9a833f59..000000000 --- a/libs/nixio/src/tls-context.c +++ /dev/null @@ -1,248 +0,0 @@ -/* - * nixio - Linux I/O library for lua - * - * Copyright (C) 2009 Steven Barth <steven@midlink.org> - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include "nixio-tls.h" -#include <string.h> - -static SSL_CTX* nixio__checktlsctx(lua_State *L) { - SSL_CTX **ctx = (SSL_CTX **)luaL_checkudata(L, 1, NIXIO_TLS_CTX_META); - luaL_argcheck(L, *ctx, 1, "invalid context"); - return *ctx; -} - -static int nixio__tls_perror(lua_State *L, int code) { - lua_pushnil(L); - lua_pushinteger(L, code); - return 2; -} - -static int nixio__tls_pstatus(lua_State *L, int code) { - if (code == 1) { - lua_pushboolean(L, 1); - return 1; - } else { - return nixio__tls_perror(L, code); - } -} - -static int nixio_tls_ctx(lua_State * L) { - const char *method = luaL_optlstring(L, 1, "client", NULL); - - luaL_getmetatable(L, NIXIO_TLS_CTX_META); - SSL_CTX **ctx = lua_newuserdata(L, sizeof(SSL_CTX *)); - if (!ctx) { - return luaL_error(L, "out of memory"); - } - - /* create userdata */ - lua_pushvalue(L, -2); - lua_setmetatable(L, -2); - - if (!strcmp(method, "client")) { - *ctx = SSL_CTX_new(TLSv1_client_method()); - } else if (!strcmp(method, "server")) { - *ctx = SSL_CTX_new(TLSv1_server_method()); - } else { - return luaL_argerror(L, 1, "supported values: client, server"); - } - - if (!(*ctx)) { - return luaL_error(L, "unable to create TLS context"); - } - -#ifdef WITH_CYASSL - SSL_CTX_set_verify(*ctx, SSL_VERIFY_NONE, NULL); -#endif - - return 1; -} - -static int nixio_tls_ctx_create(lua_State *L) { - SSL_CTX *ctx = nixio__checktlsctx(L); - int fd = nixio__checkfd(L, 2); - - lua_createtable(L, 0, 3); - nixio_tls_sock *sock = lua_newuserdata(L, sizeof(nixio_tls_sock)); - if (!sock) { - return luaL_error(L, "out of memory"); - } - memset(sock, 0, sizeof(nixio_tls_sock)); - - /* create userdata */ - luaL_getmetatable(L, NIXIO_TLS_SOCK_META); - lua_pushvalue(L, -1); - lua_setmetatable(L, -3); - - sock->socket = SSL_new(ctx); - if (!sock->socket) { - return nixio__tls_perror(L, 0); - } - - if (SSL_set_fd(sock->socket, fd) != 1) { - return nixio__tls_perror(L, 0); - } - - /* save context and socket to prevent GC from collecting them */ - lua_setmetatable(L, -3); - lua_setfield(L, -2, "connection"); - - lua_pushvalue(L, 1); - lua_setfield(L, -2, "context"); - - lua_pushvalue(L, 2); - lua_setfield(L, -2, "socket"); - - return 1; -} - -static int nixio_tls_ctx_set_cert(lua_State *L) { - SSL_CTX *ctx = nixio__checktlsctx(L); - const char *cert = luaL_checkstring(L, 2); - const char *type = luaL_optstring(L, 3, "chain"); - int ktype; - - if (!strcmp(type, "chain")) { - return nixio__tls_pstatus(L, - SSL_CTX_use_certificate_chain_file(ctx, cert)); - } else if (!strcmp(type, "pem")) { - ktype = SSL_FILETYPE_PEM; - } else if (!strcmp(type, "asn1")) { - ktype = SSL_FILETYPE_ASN1; - } else { - return luaL_argerror(L, 3, "supported values: chain, pem, asn1"); - } - - return nixio__tls_pstatus(L, - SSL_CTX_use_certificate_file(ctx, cert, ktype)); -} - -static int nixio_tls_ctx_set_verify_locations(lua_State *L) { - SSL_CTX *ctx = nixio__checktlsctx(L); - const char *CAfile = luaL_optstring(L, 2, NULL); - const char *CApath = luaL_optstring(L, 3, NULL); - return nixio__tls_pstatus(L, SSL_CTX_load_verify_locations(ctx, - CAfile, CApath)); -} - -static int nixio_tls_ctx_set_key(lua_State *L) { - SSL_CTX *ctx = nixio__checktlsctx(L); - const char *cert = luaL_checkstring(L, 2); - const char *type = luaL_optstring(L, 3, "pem"); - int ktype; - - if (!strcmp(type, "pem")) { - ktype = SSL_FILETYPE_PEM; - } else if (!strcmp(type, "asn1")) { - ktype = SSL_FILETYPE_ASN1; - } else { - return luaL_argerror(L, 3, "supported values: pem, asn1"); - } - - return nixio__tls_pstatus(L, SSL_CTX_use_PrivateKey_file(ctx, cert, ktype)); -} - -static int nixio_tls_ctx_set_ciphers(lua_State *L) { - SSL_CTX *ctx = nixio__checktlsctx(L); - size_t len; - const char *ciphers = luaL_checklstring(L, 2, &len); - luaL_argcheck(L, len < 255, 2, "cipher string too long"); - return nixio__tls_pstatus(L, SSL_CTX_set_cipher_list(ctx, ciphers)); -} - -static int nixio_tls_ctx_set_verify(lua_State *L) { - SSL_CTX *ctx = nixio__checktlsctx(L); - const int j = lua_gettop(L); - int flags = 0; - for (int i=2; i<=j; i++) { - const char *flag = luaL_checkstring(L, i); - if (!strcmp(flag, "none")) { - flags |= SSL_VERIFY_NONE; - } else if (!strcmp(flag, "peer")) { - flags |= SSL_VERIFY_PEER; - } else if (!strcmp(flag, "verify_fail_if_no_peer_cert")) { - flags |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT; - } else if (!strcmp(flag, "client_once")) { - flags |= SSL_VERIFY_CLIENT_ONCE; - } else { - return luaL_argerror(L, i, "supported values: none, peer, " - "verify_fail_if_no_peer_cert, client_once"); - } - } - SSL_CTX_set_verify(ctx, flags, NULL); - return 0; -} - -static int nixio_tls_ctx__gc(lua_State *L) { - SSL_CTX **ctx = (SSL_CTX **)luaL_checkudata(L, 1, NIXIO_TLS_CTX_META); - if (*ctx) { - SSL_CTX_free(*ctx); - *ctx = NULL; - } - return 0; -} - -static int nixio_tls_ctx__tostring(lua_State *L) { - SSL_CTX *ctx = nixio__checktlsctx(L); - lua_pushfstring(L, "nixio TLS context: %p", ctx); - return 1; -} - -/* module table */ -static const luaL_reg R[] = { - {"tls", nixio_tls_ctx}, - {NULL, NULL} -}; - -/* ctx function table */ -static const luaL_reg CTX_M[] = { - {"set_cert", nixio_tls_ctx_set_cert}, - {"set_verify_locations", nixio_tls_ctx_set_verify_locations}, - {"set_key", nixio_tls_ctx_set_key}, - {"set_ciphers", nixio_tls_ctx_set_ciphers}, - {"set_verify", nixio_tls_ctx_set_verify}, - {"create", nixio_tls_ctx_create}, - {"__gc", nixio_tls_ctx__gc}, - {"__tostring", nixio_tls_ctx__tostring}, - {NULL, NULL} -}; - - -void nixio_open_tls_context(lua_State *L) { - /* initialize tls library */ - SSL_load_error_strings(); - SSL_library_init(); - - /* register module functions */ - luaL_register(L, NULL, R); - -#if defined (WITH_AXTLS) - lua_pushliteral(L, "axtls"); -#elif defined (WITH_CYASSL) - lua_pushliteral(L, "cyassl"); -#else - lua_pushliteral(L, "openssl"); -#endif - lua_setfield(L, -2, "tls_provider"); - - /* create context metatable */ - luaL_newmetatable(L, NIXIO_TLS_CTX_META); - lua_pushvalue(L, -1); - lua_setfield(L, -2, "__index"); - luaL_register(L, NULL, CTX_M); - lua_setfield(L, -2, "meta_tls_context"); -} |