1/*
2 * Dropbear SSH
3 *
4 * Copyright (c) 2002,2003 Matt Johnston
5 * Copyright (c) 2004 by Mihnea Stoenescu
6 * All rights reserved.
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 * SOFTWARE. */
25
26#include "includes.h"
27#include "service.h"
28#include "dbutil.h"
29#include "packet.h"
30#include "buffer.h"
31#include "session.h"
32#include "ssh.h"
33
34void send_msg_service_request(char* servicename) {
35
36	TRACE(("enter send_msg_service_request: servicename='%s'", servicename))
37
38	CHECKCLEARTOWRITE();
39
40	buf_putbyte(ses.writepayload, SSH_MSG_SERVICE_REQUEST);
41	buf_putstring(ses.writepayload, servicename, strlen(servicename));
42
43	encrypt_packet();
44	TRACE(("leave send_msg_service_request"))
45}
46
47/* This just sets up the state variables right for the main client session loop
48 * to deal with */
49void recv_msg_service_accept() {
50
51	unsigned char* servicename;
52	unsigned int len;
53
54	TRACE(("enter recv_msg_service_accept"))
55
56	servicename = buf_getstring(ses.payload, &len);
57
58	/* ssh-userauth */
59	if (cli_ses.state == SERVICE_AUTH_REQ_SENT
60			&& len == SSH_SERVICE_USERAUTH_LEN
61			&& strncmp(SSH_SERVICE_USERAUTH, servicename, len) == 0) {
62
63		cli_ses.state = SERVICE_AUTH_ACCEPT_RCVD;
64		m_free(servicename);
65		TRACE(("leave recv_msg_service_accept: done ssh-userauth"))
66		return;
67	}
68
69	/* ssh-connection */
70	if (cli_ses.state == SERVICE_CONN_REQ_SENT
71			&& len == SSH_SERVICE_CONNECTION_LEN
72			&& strncmp(SSH_SERVICE_CONNECTION, servicename, len) == 0) {
73
74		if (ses.authstate.authdone != 1) {
75			dropbear_exit("request for connection before auth");
76		}
77
78		cli_ses.state = SERVICE_CONN_ACCEPT_RCVD;
79		m_free(servicename);
80		TRACE(("leave recv_msg_service_accept: done ssh-connection"))
81		return;
82	}
83
84	dropbear_exit("unrecognised service accept");
85}
86