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88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
/*
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* Dropbear - a SSH2 server
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*
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* Copyright (c) 2002,2003 Matt Johnston
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE. */
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#include "includes.h"
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#include "dbutil.h"
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#include "service.h"
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#include "session.h"
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#include "packet.h"
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#include "ssh.h"
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#include "auth.h"
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static void send_msg_service_accept(unsigned char *name, int len);
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/* processes a SSH_MSG_SERVICE_REQUEST, returning 0 if finished,
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* 1 if not */
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void recv_msg_service_request() {
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unsigned char * name;
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unsigned int len;
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TRACE(("enter recv_msg_service_request"))
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name = buf_getstring(ses.payload, &len);
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/* ssh-userauth */
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if (len == SSH_SERVICE_USERAUTH_LEN &&
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strncmp(SSH_SERVICE_USERAUTH, name, len) == 0) {
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send_msg_service_accept(name, len);
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m_free(name);
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TRACE(("leave recv_msg_service_request: done ssh-userauth"))
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return;
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}
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/* ssh-connection */
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if (len == SSH_SERVICE_CONNECTION_LEN &&
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(strncmp(SSH_SERVICE_CONNECTION, name, len) == 0)) {
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if (ses.authstate.authdone != 1) {
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dropbear_exit("Request for connection before auth");
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}
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send_msg_service_accept(name, len);
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m_free(name);
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TRACE(("leave recv_msg_service_request: done ssh-connection"))
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return;
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}
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m_free(name);
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/* TODO this should be a MSG_DISCONNECT */
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dropbear_exit("Unrecognised SSH_MSG_SERVICE_REQUEST");
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}
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static void send_msg_service_accept(unsigned char *name, int len) {
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TRACE(("accepting service %s", name))
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CHECKCLEARTOWRITE();
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buf_putbyte(ses.writepayload, SSH_MSG_SERVICE_ACCEPT);
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buf_putstring(ses.writepayload, name, len);
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encrypt_packet();
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}
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