diff options
Diffstat (limited to 'svr-service.c')
-rw-r--r-- | svr-service.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/svr-service.c b/svr-service.c new file mode 100644 index 0000000..4154df4 --- /dev/null +++ b/svr-service.c @@ -0,0 +1,88 @@ +/* + * 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 "service.h" +#include "session.h" +#include "packet.h" +#include "ssh.h" +#include "auth.h" + +static void send_msg_service_accept(unsigned char *name, int len); + +/* processes a SSH_MSG_SERVICE_REQUEST, returning 0 if finished, + * 1 if not */ +void recv_msg_service_request() { + + unsigned char * name; + unsigned int len; + + TRACE(("enter recv_msg_service_request")); + + name = buf_getstring(ses.payload, &len); + + /* ssh-userauth */ + if (len == SSH_SERVICE_USERAUTH_LEN && + strncmp(SSH_SERVICE_USERAUTH, name, len) == 0) { + + send_msg_service_accept(name, len); + m_free(name); + TRACE(("leave recv_msg_service_request: done ssh-userauth")); + return; + } + + /* ssh-connection */ + if (len == SSH_SERVICE_CONNECTION_LEN && + (strncmp(SSH_SERVICE_CONNECTION, name, len) == 0)) { + if (svr_ses.authstate.authdone != 1) { + dropbear_exit("request for connection before auth"); + } + + send_msg_service_accept(name, len); + m_free(name); + TRACE(("leave recv_msg_service_request: done ssh-connection")); + return; + } + + m_free(name); + /* TODO this should be a MSG_DISCONNECT */ + dropbear_exit("unrecognised SSH_MSG_SERVICE_REQUEST"); + + TRACE(("leave recv_msg_service_request")); + +} + +static void send_msg_service_accept(unsigned char *name, int len) { + + TRACE(("accepting service %s", name)); + + CHECKCLEARTOWRITE(); + + buf_putbyte(ses.writepayload, SSH_MSG_SERVICE_ACCEPT); + buf_putstring(ses.writepayload, name, len); + + encrypt_packet(); + +} |