annotate svr-tcpfwd.c @ 350:01e4180895ba

merge of '9a4e042fd565f46141e81e0c1ab90260303348fe' and 'bea3887a5875cf3ab8a1331e15e698b37b61fe37'
author Matt Johnston <matt@ucc.asn.au>
date Mon, 07 Aug 2006 13:41:23 +0000
parents 454a34b2dfd1
children b895f91c2ee6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
74
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
1 /*
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
2 * Dropbear SSH
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
3 *
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
4 * Copyright (c) 2002,2003 Matt Johnston
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
5 * Copyright (c) 2004 by Mihnea Stoenescu
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
6 * All rights reserved.
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
7 *
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
9 * of this software and associated documentation files (the "Software"), to deal
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
10 * in the Software without restriction, including without limitation the rights
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
12 * copies of the Software, and to permit persons to whom the Software is
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
13 * furnished to do so, subject to the following conditions:
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
14 *
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
15 * The above copyright notice and this permission notice shall be included in
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
16 * all copies or substantial portions of the Software.
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
17 *
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
24 * SOFTWARE. */
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
25
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
26 #include "includes.h"
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
27 #include "ssh.h"
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
28 #include "tcpfwd.h"
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
29 #include "dbutil.h"
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
30 #include "session.h"
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
31 #include "buffer.h"
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
32 #include "packet.h"
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
33 #include "listener.h"
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
34 #include "runopts.h"
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
35
156
8c2b3506f112 Rearrange preprocessor parts so that compilation with various options
Matt Johnston <matt@ucc.asn.au>
parents: 74
diff changeset
36 #ifdef ENABLE_SVR_REMOTETCPFWD
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
37
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
38 static void send_msg_request_success();
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
39 static void send_msg_request_failure();
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
40 static int svr_cancelremotetcp();
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
41 static int svr_remotetcpreq();
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
42 static int newtcpdirect(struct Channel * channel);
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
43
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
44
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
45 const struct ChanType svr_chan_tcpdirect = {
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
46 1, /* sepfds */
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
47 "direct-tcpip",
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
48 newtcpdirect, /* init */
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
49 NULL, /* checkclose */
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
50 NULL, /* reqhandler */
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
51 NULL /* closehandler */
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
52 };
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
53
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
54 static const struct ChanType svr_chan_tcpremote = {
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
55 1, /* sepfds */
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
56 "forwarded-tcpip",
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
57 NULL,
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
58 NULL,
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
59 NULL,
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
60 NULL
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
61 };
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
63 /* At the moment this is completely used for tcp code (with the name reflecting
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
64 * that). If new request types are added, this should be replaced with code
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
65 * similar to the request-switching in chansession.c */
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
66 void recv_msg_global_request_remotetcp() {
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
67
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
68 unsigned char* reqname = NULL;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
69 unsigned int namelen;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
70 unsigned int wantreply = 0;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
71 int ret = DROPBEAR_FAILURE;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
72
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 156
diff changeset
73 TRACE(("enter recv_msg_global_request_remotetcp"))
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
74
258
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 253
diff changeset
75 if (svr_opts.noremotetcp) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 156
diff changeset
76 TRACE(("leave recv_msg_global_request_remotetcp: remote tcp forwarding disabled"))
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
77 goto out;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
78 }
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
79
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
80 reqname = buf_getstring(ses.payload, &namelen);
179
161557a9dde8 * fix longstanding bug with connections being closed on failure to
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
81 wantreply = buf_getbool(ses.payload);
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
82
267
7ce577234a10 * svr-tcpfwd.c: should be MAX_NAME_LEN not MAXNAMLEN
Matt Johnston <matt@ucc.asn.au>
parents: 259
diff changeset
83 if (namelen > MAX_NAME_LEN) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 156
diff changeset
84 TRACE(("name len is wrong: %d", namelen))
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
85 goto out;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
86 }
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
87
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
88 if (strcmp("tcpip-forward", reqname) == 0) {
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
89 ret = svr_remotetcpreq();
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
90 } else if (strcmp("cancel-tcpip-forward", reqname) == 0) {
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
91 ret = svr_cancelremotetcp();
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
92 } else {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 156
diff changeset
93 TRACE(("reqname isn't tcpip-forward: '%s'", reqname))
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
94 }
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
95
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
96 out:
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
97 if (wantreply) {
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
98 if (ret == DROPBEAR_SUCCESS) {
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
99 send_msg_request_success();
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
100 } else {
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
101 send_msg_request_failure();
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
102 }
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
103 }
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
104
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
105 m_free(reqname);
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
106
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 156
diff changeset
107 TRACE(("leave recv_msg_global_request"))
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
108 }
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
109
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
110
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
111 static void send_msg_request_success() {
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
112
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
113 CHECKCLEARTOWRITE();
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
114 buf_putbyte(ses.writepayload, SSH_MSG_REQUEST_SUCCESS);
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
115 encrypt_packet();
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
116
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
117 }
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
118
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
119 static void send_msg_request_failure() {
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
120
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
121 CHECKCLEARTOWRITE();
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
122 buf_putbyte(ses.writepayload, SSH_MSG_REQUEST_FAILURE);
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
123 encrypt_packet();
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
124
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
125 }
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
126
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
127 static int matchtcp(void* typedata1, void* typedata2) {
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
128
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
129 const struct TCPListener *info1 = (struct TCPListener*)typedata1;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
130 const struct TCPListener *info2 = (struct TCPListener*)typedata2;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
131
258
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 253
diff changeset
132 return (info1->listenport == info2->listenport)
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
133 && (info1->chantype == info2->chantype)
258
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 253
diff changeset
134 && (strcmp(info1->listenaddr, info2->listenaddr) == 0);
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
135 }
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
136
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
137 static int svr_cancelremotetcp() {
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
138
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
139 int ret = DROPBEAR_FAILURE;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
140 unsigned char * bindaddr = NULL;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
141 unsigned int addrlen;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
142 unsigned int port;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
143 struct Listener * listener = NULL;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
144 struct TCPListener tcpinfo;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
145
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 156
diff changeset
146 TRACE(("enter cancelremotetcp"))
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
147
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
148 bindaddr = buf_getstring(ses.payload, &addrlen);
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
149 if (addrlen > MAX_IP_LEN) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 156
diff changeset
150 TRACE(("addr len too long: %d", addrlen))
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
151 goto out;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
152 }
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
153
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
154 port = buf_getint(ses.payload);
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
155
258
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 253
diff changeset
156 tcpinfo.sendaddr = NULL;
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 253
diff changeset
157 tcpinfo.sendport = 0;
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 253
diff changeset
158 tcpinfo.listenaddr = bindaddr;
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 253
diff changeset
159 tcpinfo.listenport = port;
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
160 listener = get_listener(CHANNEL_ID_TCPFORWARDED, &tcpinfo, matchtcp);
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
161 if (listener) {
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
162 remove_listener( listener );
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
163 ret = DROPBEAR_SUCCESS;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
164 }
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
165
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
166 out:
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
167 m_free(bindaddr);
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 156
diff changeset
168 TRACE(("leave cancelremotetcp"))
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
169 return ret;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
170 }
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
171
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
172 static int svr_remotetcpreq() {
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
173
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
174 int ret = DROPBEAR_FAILURE;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
175 unsigned char * bindaddr = NULL;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
176 unsigned int addrlen;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
177 struct TCPListener *tcpinfo = NULL;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
178 unsigned int port;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
179
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 156
diff changeset
180 TRACE(("enter remotetcpreq"))
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
181
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
182 bindaddr = buf_getstring(ses.payload, &addrlen);
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
183 if (addrlen > MAX_IP_LEN) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 156
diff changeset
184 TRACE(("addr len too long: %d", addrlen))
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
185 goto out;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
186 }
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
187
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
188 port = buf_getint(ses.payload);
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
189
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
190 if (port == 0) {
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
191 dropbear_log(LOG_INFO, "Server chosen tcpfwd ports are unsupported");
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
192 goto out;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
193 }
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
194
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
195 if (port < 1 || port > 65535) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 156
diff changeset
196 TRACE(("invalid port: %d", port))
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
197 goto out;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
198 }
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
199
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
200 if (!ses.allowprivport && port < IPPORT_RESERVED) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 156
diff changeset
201 TRACE(("can't assign port < 1024 for non-root"))
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
202 goto out;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
203 }
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
204
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
205 tcpinfo = (struct TCPListener*)m_malloc(sizeof(struct TCPListener));
258
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 253
diff changeset
206 tcpinfo->sendaddr = NULL;
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 253
diff changeset
207 tcpinfo->sendport = 0;
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 253
diff changeset
208 tcpinfo->listenaddr = bindaddr;
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
209 tcpinfo->listenport = port;
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
210 tcpinfo->chantype = &svr_chan_tcpremote;
259
c049490e43fe * fix -L forwarding on the client, broke last rev
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
211 tcpinfo->tcp_type = forwarded;
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
212
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
213 ret = listen_tcpfwd(tcpinfo);
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
214
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
215 out:
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
216 if (ret == DROPBEAR_FAILURE) {
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
217 /* we only free it if a listener wasn't created, since the listener
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
218 * has to remember it if it's to be cancelled */
340
454a34b2dfd1 Fixes from Erik Hovland:
Matt Johnston <matt@ucc.asn.au>
parents: 267
diff changeset
219 m_free(bindaddr);
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
220 m_free(tcpinfo);
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
221 }
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 156
diff changeset
222 TRACE(("leave remotetcpreq"))
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
223 return ret;
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
224 }
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
225
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
226 /* Called upon creating a new direct tcp channel (ie we connect out to an
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
227 * address */
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
228 static int newtcpdirect(struct Channel * channel) {
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
229
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
230 unsigned char* desthost = NULL;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
231 unsigned int destport;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
232 unsigned char* orighost = NULL;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
233 unsigned int origport;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
234 char portstring[NI_MAXSERV];
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
235 int sock;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
236 int len;
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
237 int err = SSH_OPEN_ADMINISTRATIVELY_PROHIBITED;
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
238
258
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 253
diff changeset
239 if (svr_opts.nolocaltcp) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 156
diff changeset
240 TRACE(("leave newtcpdirect: local tcp forwarding disabled"))
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
241 goto out;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
242 }
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
243
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
244 desthost = buf_getstring(ses.payload, &len);
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
245 if (len > MAX_HOST_LEN) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 156
diff changeset
246 TRACE(("leave newtcpdirect: desthost too long"))
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
247 goto out;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
248 }
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
249
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
250 destport = buf_getint(ses.payload);
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
251
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
252 orighost = buf_getstring(ses.payload, &len);
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
253 if (len > MAX_HOST_LEN) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 156
diff changeset
254 TRACE(("leave newtcpdirect: orighost too long"))
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
255 goto out;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
256 }
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
257
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
258 origport = buf_getint(ses.payload);
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
259
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
260 /* best be sure */
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
261 if (origport > 65535 || destport > 65535) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 156
diff changeset
262 TRACE(("leave newtcpdirect: port > 65535"))
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
263 goto out;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
264 }
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
265
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
266 snprintf(portstring, sizeof(portstring), "%d", destport);
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
267 sock = connect_remote(desthost, portstring, 1, NULL);
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
268 if (sock < 0) {
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
269 err = SSH_OPEN_CONNECT_FAILED;
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 156
diff changeset
270 TRACE(("leave newtcpdirect: sock failed"))
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
271 goto out;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
272 }
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
273
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
274 ses.maxfd = MAX(ses.maxfd, sock);
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
275
253
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
276 /* We don't set readfd, that will get set after the connection's
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
277 * progress succeeds */
253
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
278 channel->writefd = sock;
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
279 channel->initconn = 1;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
280
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
281 err = SSH_OPEN_IN_PROGRESS;
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
282
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
283 out:
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
284 m_free(desthost);
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
285 m_free(orighost);
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 156
diff changeset
286 TRACE(("leave newtcpdirect: err %d", err))
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
287 return err;
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
288 }
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
289
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
290 #endif