view cli-service.c @ 447:278805938dcf

Patch from Nicolai Ehemann to try binding before going to the background, so that if it exits early (because something's already listening etc) then it will return an exitcode of 1.
author Matt Johnston <matt@ucc.asn.au>
date Thu, 19 Jul 2007 15:54:18 +0000
parents 454a34b2dfd1
children a98a2138364a
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/*
 * Dropbear SSH
 * 
 * Copyright (c) 2002,2003 Matt Johnston
 * Copyright (c) 2004 by Mihnea Stoenescu
 * 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 "service.h"
#include "dbutil.h"
#include "packet.h"
#include "buffer.h"
#include "session.h"
#include "ssh.h"

void send_msg_service_request(char* servicename) {

	TRACE(("enter send_msg_service_request: servicename='%s'", servicename))

	CHECKCLEARTOWRITE();

	buf_putbyte(ses.writepayload, SSH_MSG_SERVICE_REQUEST);
	buf_putstring(ses.writepayload, servicename, strlen(servicename));

	encrypt_packet();
	TRACE(("leave send_msg_service_request"))
}

/* This just sets up the state variables right for the main client session loop
 * to deal with */
void recv_msg_service_accept() {

	unsigned char* servicename;
	unsigned int len;

	TRACE(("enter recv_msg_service_accept"))

	servicename = buf_getstring(ses.payload, &len);

	/* ssh-userauth */
	if (cli_ses.state == SERVICE_AUTH_REQ_SENT
			&& len == SSH_SERVICE_USERAUTH_LEN
			&& strncmp(SSH_SERVICE_USERAUTH, servicename, len) == 0) {

		cli_ses.state = SERVICE_AUTH_ACCEPT_RCVD;
		m_free(servicename);
		TRACE(("leave recv_msg_service_accept: done ssh-userauth"))
		return;
	}

	/* ssh-connection */
	if (cli_ses.state == SERVICE_CONN_REQ_SENT
			&& len == SSH_SERVICE_CONNECTION_LEN 
			&& strncmp(SSH_SERVICE_CONNECTION, servicename, len) == 0) {

		if (ses.authstate.authdone != 1) {
			dropbear_exit("request for connection before auth");
		}

		cli_ses.state = SERVICE_CONN_ACCEPT_RCVD;
		m_free(servicename);
		TRACE(("leave recv_msg_service_accept: done ssh-connection"))
		return;
	}

	dropbear_exit("unrecognised service accept");
}