annotate svr-session.c @ 1570:67cb1983500b

avoid fsanitize=address for fuzzing
author Matt Johnston <matt@ucc.asn.au>
date Thu, 01 Mar 2018 23:47:46 +0800
parents 92c93b4a3646
children 76189c9ffea2
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1 /*
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
2 * Dropbear - a SSH2 server
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
3 *
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
4 * Copyright (c) 2002,2003 Matt Johnston
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
5 * All rights reserved.
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
6 *
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
8 * of this software and associated documentation files (the "Software"), to deal
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
9 * in the Software without restriction, including without limitation the rights
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
11 * copies of the Software, and to permit persons to whom the Software is
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
12 * furnished to do so, subject to the following conditions:
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
13 *
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
14 * The above copyright notice and this permission notice shall be included in
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
15 * all copies or substantial portions of the Software.
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
16 *
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
23 * SOFTWARE. */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
24
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
25 #include "includes.h"
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
26 #include "session.h"
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
27 #include "dbutil.h"
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
28 #include "packet.h"
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
29 #include "algo.h"
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
30 #include "buffer.h"
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
31 #include "dss.h"
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
32 #include "ssh.h"
858
220f55d540ae rename random.h to dbrandom.h since some OSes have a system random.h
Matt Johnston <matt@ucc.asn.au>
parents: 801
diff changeset
33 #include "dbrandom.h"
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
34 #include "kex.h"
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
35 #include "channel.h"
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
36 #include "chansession.h"
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
37 #include "atomicio.h"
68
eee77ac31ccc cleaning up the pubkey defines
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
38 #include "tcpfwd.h"
22
c1e5d9195402 merge of abac2150ee4f4031a98016241fbd136d24fed127
Matt Johnston <matt@ucc.asn.au>
parents: 14
diff changeset
39 #include "service.h"
c1e5d9195402 merge of abac2150ee4f4031a98016241fbd136d24fed127
Matt Johnston <matt@ucc.asn.au>
parents: 14
diff changeset
40 #include "auth.h"
24
469950e86d0f switching to global vars
Matt Johnston <matt@ucc.asn.au>
parents: 22
diff changeset
41 #include "runopts.h"
766
d1575fdc29a6 start on ecdsa keys
Matt Johnston <matt@ucc.asn.au>
parents: 687
diff changeset
42 #include "crypto_desc.h"
1348
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents: 1347
diff changeset
43 #include "fuzz.h"
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
44
1276
9169e4e7cbee fix empty C prototypes
Francois Perrad <francois.perrad@gadz.org>
parents: 1237
diff changeset
45 static void svr_remoteclosed(void);
1544
d1a8a05216ff make group1 client-only
Matt Johnston <matt@ucc.asn.au>
parents: 1495
diff changeset
46 static void svr_algos_initialise(void);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
47
24
469950e86d0f switching to global vars
Matt Johnston <matt@ucc.asn.au>
parents: 22
diff changeset
48 struct serversession svr_ses; /* GLOBAL */
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
49
22
c1e5d9195402 merge of abac2150ee4f4031a98016241fbd136d24fed127
Matt Johnston <matt@ucc.asn.au>
parents: 14
diff changeset
50 static const packettype svr_packettypes[] = {
c1e5d9195402 merge of abac2150ee4f4031a98016241fbd136d24fed127
Matt Johnston <matt@ucc.asn.au>
parents: 14
diff changeset
51 {SSH_MSG_CHANNEL_DATA, recv_msg_channel_data},
c1e5d9195402 merge of abac2150ee4f4031a98016241fbd136d24fed127
Matt Johnston <matt@ucc.asn.au>
parents: 14
diff changeset
52 {SSH_MSG_CHANNEL_WINDOW_ADJUST, recv_msg_channel_window_adjust},
45
9ee8996a375f Pubkey auth is mostly there for the client. Something strange with
Matt Johnston <matt@ucc.asn.au>
parents: 35
diff changeset
53 {SSH_MSG_USERAUTH_REQUEST, recv_msg_userauth_request}, /* server */
9ee8996a375f Pubkey auth is mostly there for the client. Something strange with
Matt Johnston <matt@ucc.asn.au>
parents: 35
diff changeset
54 {SSH_MSG_SERVICE_REQUEST, recv_msg_service_request}, /* server */
9ee8996a375f Pubkey auth is mostly there for the client. Something strange with
Matt Johnston <matt@ucc.asn.au>
parents: 35
diff changeset
55 {SSH_MSG_KEXINIT, recv_msg_kexinit},
9ee8996a375f Pubkey auth is mostly there for the client. Something strange with
Matt Johnston <matt@ucc.asn.au>
parents: 35
diff changeset
56 {SSH_MSG_KEXDH_INIT, recv_msg_kexdh_init}, /* server */
9ee8996a375f Pubkey auth is mostly there for the client. Something strange with
Matt Johnston <matt@ucc.asn.au>
parents: 35
diff changeset
57 {SSH_MSG_NEWKEYS, recv_msg_newkeys},
22
c1e5d9195402 merge of abac2150ee4f4031a98016241fbd136d24fed127
Matt Johnston <matt@ucc.asn.au>
parents: 14
diff changeset
58 {SSH_MSG_GLOBAL_REQUEST, recv_msg_global_request_remotetcp},
c1e5d9195402 merge of abac2150ee4f4031a98016241fbd136d24fed127
Matt Johnston <matt@ucc.asn.au>
parents: 14
diff changeset
59 {SSH_MSG_CHANNEL_REQUEST, recv_msg_channel_request},
c1e5d9195402 merge of abac2150ee4f4031a98016241fbd136d24fed127
Matt Johnston <matt@ucc.asn.au>
parents: 14
diff changeset
60 {SSH_MSG_CHANNEL_OPEN, recv_msg_channel_open},
c1e5d9195402 merge of abac2150ee4f4031a98016241fbd136d24fed127
Matt Johnston <matt@ucc.asn.au>
parents: 14
diff changeset
61 {SSH_MSG_CHANNEL_EOF, recv_msg_channel_eof},
c1e5d9195402 merge of abac2150ee4f4031a98016241fbd136d24fed127
Matt Johnston <matt@ucc.asn.au>
parents: 14
diff changeset
62 {SSH_MSG_CHANNEL_CLOSE, recv_msg_channel_close},
970
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does
Matt Johnston <matt@ucc.asn.au>
parents: 968
diff changeset
63 {SSH_MSG_CHANNEL_SUCCESS, ignore_recv_response},
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does
Matt Johnston <matt@ucc.asn.au>
parents: 968
diff changeset
64 {SSH_MSG_CHANNEL_FAILURE, ignore_recv_response},
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does
Matt Johnston <matt@ucc.asn.au>
parents: 968
diff changeset
65 {SSH_MSG_REQUEST_FAILURE, ignore_recv_response}, /* for keepalive */
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does
Matt Johnston <matt@ucc.asn.au>
parents: 968
diff changeset
66 {SSH_MSG_REQUEST_SUCCESS, ignore_recv_response}, /* client */
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1276
diff changeset
67 #if DROPBEAR_LISTENERS
22
c1e5d9195402 merge of abac2150ee4f4031a98016241fbd136d24fed127
Matt Johnston <matt@ucc.asn.au>
parents: 14
diff changeset
68 {SSH_MSG_CHANNEL_OPEN_CONFIRMATION, recv_msg_channel_open_confirmation},
c1e5d9195402 merge of abac2150ee4f4031a98016241fbd136d24fed127
Matt Johnston <matt@ucc.asn.au>
parents: 14
diff changeset
69 {SSH_MSG_CHANNEL_OPEN_FAILURE, recv_msg_channel_open_failure},
156
8c2b3506f112 Rearrange preprocessor parts so that compilation with various options
Matt Johnston <matt@ucc.asn.au>
parents: 98
diff changeset
70 #endif
1404
e8f67918fdc9 when pointer, use NULL instead of 0
Francois Perrad <francois.perrad@gadz.org>
parents: 1316
diff changeset
71 {0, NULL} /* End */
22
c1e5d9195402 merge of abac2150ee4f4031a98016241fbd136d24fed127
Matt Johnston <matt@ucc.asn.au>
parents: 14
diff changeset
72 };
c1e5d9195402 merge of abac2150ee4f4031a98016241fbd136d24fed127
Matt Johnston <matt@ucc.asn.au>
parents: 14
diff changeset
73
c1e5d9195402 merge of abac2150ee4f4031a98016241fbd136d24fed127
Matt Johnston <matt@ucc.asn.au>
parents: 14
diff changeset
74 static const struct ChanType *svr_chantypes[] = {
6
ab00ef513e97 Sorted out the first channel init issues.
Matt Johnston <matt@ucc.asn.au>
parents: 5
diff changeset
75 &svrchansess,
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1276
diff changeset
76 #if DROPBEAR_SVR_LOCALTCPFWD
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
77 &svr_chan_tcpdirect,
156
8c2b3506f112 Rearrange preprocessor parts so that compilation with various options
Matt Johnston <matt@ucc.asn.au>
parents: 98
diff changeset
78 #endif
6
ab00ef513e97 Sorted out the first channel init issues.
Matt Johnston <matt@ucc.asn.au>
parents: 5
diff changeset
79 NULL /* Null termination is mandatory. */
ab00ef513e97 Sorted out the first channel init issues.
Matt Johnston <matt@ucc.asn.au>
parents: 5
diff changeset
80 };
ab00ef513e97 Sorted out the first channel init issues.
Matt Johnston <matt@ucc.asn.au>
parents: 5
diff changeset
81
733
70811267715c Run the cleanup handler also when we close due to TCP connection being closed
Matt Johnston <matt@ucc.asn.au>
parents: 726
diff changeset
82 static void
1040
2b4fd440399d Free memory before exiting. Based on patch from Thorsten Horstmann.
Matt Johnston <matt@ucc.asn.au>
parents: 970
diff changeset
83 svr_session_cleanup(void) {
733
70811267715c Run the cleanup handler also when we close due to TCP connection being closed
Matt Johnston <matt@ucc.asn.au>
parents: 726
diff changeset
84 /* free potential public key options */
70811267715c Run the cleanup handler also when we close due to TCP connection being closed
Matt Johnston <matt@ucc.asn.au>
parents: 726
diff changeset
85 svr_pubkey_options_cleanup();
1040
2b4fd440399d Free memory before exiting. Based on patch from Thorsten Horstmann.
Matt Johnston <matt@ucc.asn.au>
parents: 970
diff changeset
86
2b4fd440399d Free memory before exiting. Based on patch from Thorsten Horstmann.
Matt Johnston <matt@ucc.asn.au>
parents: 970
diff changeset
87 m_free(svr_ses.addrstring);
1041
3fb883a6aa81 Some additional cleanup functions
Matt Johnston <matt@ucc.asn.au>
parents: 1040
diff changeset
88 m_free(svr_ses.remotehost);
1040
2b4fd440399d Free memory before exiting. Based on patch from Thorsten Horstmann.
Matt Johnston <matt@ucc.asn.au>
parents: 970
diff changeset
89 m_free(svr_ses.childpids);
1041
3fb883a6aa81 Some additional cleanup functions
Matt Johnston <matt@ucc.asn.au>
parents: 1040
diff changeset
90 svr_ses.childpidsize = 0;
733
70811267715c Run the cleanup handler also when we close due to TCP connection being closed
Matt Johnston <matt@ucc.asn.au>
parents: 726
diff changeset
91 }
70811267715c Run the cleanup handler also when we close due to TCP connection being closed
Matt Johnston <matt@ucc.asn.au>
parents: 726
diff changeset
92
568
005530560594 Rearrange getaddrstring() etc
Matt Johnston <matt@ucc.asn.au>
parents: 553
diff changeset
93 void svr_session(int sock, int childpipe) {
005530560594 Rearrange getaddrstring() etc
Matt Johnston <matt@ucc.asn.au>
parents: 553
diff changeset
94 char *host, *port;
005530560594 Rearrange getaddrstring() etc
Matt Johnston <matt@ucc.asn.au>
parents: 553
diff changeset
95 size_t len;
272
3be7ae2e8dfa Only read /dev/random once when the program starts
Matt Johnston <matt@ucc.asn.au>
parents: 158
diff changeset
96
568
005530560594 Rearrange getaddrstring() etc
Matt Johnston <matt@ucc.asn.au>
parents: 553
diff changeset
97 common_session_init(sock, sock);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
98
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
99 /* Initialise server specific parts of the session */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
100 svr_ses.childpipe = childpipe;
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1276
diff changeset
101 #if DROPBEAR_VFORK
553
8711f20b89ab - For uclinux, only cleanup on exit for the main process. This avoids
Matt Johnston <matt@ucc.asn.au>
parents: 496
diff changeset
102 svr_ses.server_pid = getpid();
8711f20b89ab - For uclinux, only cleanup on exit for the main process. This avoids
Matt Johnston <matt@ucc.asn.au>
parents: 496
diff changeset
103 #endif
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
104 svr_authinitialise();
22
c1e5d9195402 merge of abac2150ee4f4031a98016241fbd136d24fed127
Matt Johnston <matt@ucc.asn.au>
parents: 14
diff changeset
105 chaninitialise(svr_chantypes);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
106 svr_chansessinitialise();
1544
d1a8a05216ff make group1 client-only
Matt Johnston <matt@ucc.asn.au>
parents: 1495
diff changeset
107 svr_algos_initialise();
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
108
568
005530560594 Rearrange getaddrstring() etc
Matt Johnston <matt@ucc.asn.au>
parents: 553
diff changeset
109 /* for logging the remote address */
005530560594 Rearrange getaddrstring() etc
Matt Johnston <matt@ucc.asn.au>
parents: 553
diff changeset
110 get_socket_address(ses.sock_in, NULL, NULL, &host, &port, 0);
005530560594 Rearrange getaddrstring() etc
Matt Johnston <matt@ucc.asn.au>
parents: 553
diff changeset
111 len = strlen(host) + strlen(port) + 2;
005530560594 Rearrange getaddrstring() etc
Matt Johnston <matt@ucc.asn.au>
parents: 553
diff changeset
112 svr_ses.addrstring = m_malloc(len);
005530560594 Rearrange getaddrstring() etc
Matt Johnston <matt@ucc.asn.au>
parents: 553
diff changeset
113 snprintf(svr_ses.addrstring, len, "%s:%s", host, port);
005530560594 Rearrange getaddrstring() etc
Matt Johnston <matt@ucc.asn.au>
parents: 553
diff changeset
114 m_free(host);
005530560594 Rearrange getaddrstring() etc
Matt Johnston <matt@ucc.asn.au>
parents: 553
diff changeset
115 m_free(port);
005530560594 Rearrange getaddrstring() etc
Matt Johnston <matt@ucc.asn.au>
parents: 553
diff changeset
116
572
8fd0ac8c8cab Move remotehost into svr_ses structure since we can't look it up
Matt Johnston <matt@ucc.asn.au>
parents: 568
diff changeset
117 get_socket_address(ses.sock_in, NULL, NULL,
8fd0ac8c8cab Move remotehost into svr_ses structure since we can't look it up
Matt Johnston <matt@ucc.asn.au>
parents: 568
diff changeset
118 &svr_ses.remotehost, NULL, 1);
8fd0ac8c8cab Move remotehost into svr_ses structure since we can't look it up
Matt Johnston <matt@ucc.asn.au>
parents: 568
diff changeset
119
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
120 /* set up messages etc */
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
121 ses.remoteclosed = svr_remoteclosed;
733
70811267715c Run the cleanup handler also when we close due to TCP connection being closed
Matt Johnston <matt@ucc.asn.au>
parents: 726
diff changeset
122 ses.extra_session_cleanup = svr_session_cleanup;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
123
22
c1e5d9195402 merge of abac2150ee4f4031a98016241fbd136d24fed127
Matt Johnston <matt@ucc.asn.au>
parents: 14
diff changeset
124 /* packet handlers */
c1e5d9195402 merge of abac2150ee4f4031a98016241fbd136d24fed127
Matt Johnston <matt@ucc.asn.au>
parents: 14
diff changeset
125 ses.packettypes = svr_packettypes;
c1e5d9195402 merge of abac2150ee4f4031a98016241fbd136d24fed127
Matt Johnston <matt@ucc.asn.au>
parents: 14
diff changeset
126
35
0ad5fb979f42 set the isserver flag (oops)
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
127 ses.isserver = 1;
0ad5fb979f42 set the isserver flag (oops)
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
128
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
129 /* We're ready to go now */
1495
0c16b4ccbd54 make signal flags volatile, simplify handling
Matt Johnston <matt@ucc.asn.au>
parents: 1404
diff changeset
130 ses.init_done = 1;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
131
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
132 /* exchange identification, version etc */
726
78eda530c000 send out our kexinit packet before blocking to read the SSH version string
Matt Johnston <matt@ucc.asn.au>
parents: 687
diff changeset
133 send_session_identification();
1083
8e0280986710 Make sure kexfirstinitialise is called early enough
Matt Johnston <matt@ucc.asn.au>
parents: 1041
diff changeset
134
8e0280986710 Make sure kexfirstinitialise is called early enough
Matt Johnston <matt@ucc.asn.au>
parents: 1041
diff changeset
135 kexfirstinitialise(); /* initialise the kex state */
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
136
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
137 /* start off with key exchange */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
138 send_msg_kexinit();
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
139
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents: 24
diff changeset
140 /* Run the main for loop. NULL is for the dispatcher - only the client
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents: 24
diff changeset
141 * code makes use of it */
1495
0c16b4ccbd54 make signal flags volatile, simplify handling
Matt Johnston <matt@ucc.asn.au>
parents: 1404
diff changeset
142 session_loop(svr_chansess_checksignal);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
143
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents: 24
diff changeset
144 /* Not reached */
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
145
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
146 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
147
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
148 /* failure exit - format must be <= 100 chars */
5
bc6477a6c393 syntactical fixups - it compiles, but channel handling code requires fixing.
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
149 void svr_dropbear_exit(int exitcode, const char* format, va_list param) {
1304
b66a483f3dcb Improve exit message formatting
Matt Johnston <matt@ucc.asn.au>
parents: 1276
diff changeset
150 char exitmsg[150];
b66a483f3dcb Improve exit message formatting
Matt Johnston <matt@ucc.asn.au>
parents: 1276
diff changeset
151 char fullmsg[300];
1040
2b4fd440399d Free memory before exiting. Based on patch from Thorsten Horstmann.
Matt Johnston <matt@ucc.asn.au>
parents: 970
diff changeset
152 int i;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
153
1304
b66a483f3dcb Improve exit message formatting
Matt Johnston <matt@ucc.asn.au>
parents: 1276
diff changeset
154 /* Render the formatted exit message */
b66a483f3dcb Improve exit message formatting
Matt Johnston <matt@ucc.asn.au>
parents: 1276
diff changeset
155 vsnprintf(exitmsg, sizeof(exitmsg), format, param);
b66a483f3dcb Improve exit message formatting
Matt Johnston <matt@ucc.asn.au>
parents: 1276
diff changeset
156
b66a483f3dcb Improve exit message formatting
Matt Johnston <matt@ucc.asn.au>
parents: 1276
diff changeset
157 /* Add the prefix depending on session/auth state */
1495
0c16b4ccbd54 make signal flags volatile, simplify handling
Matt Johnston <matt@ucc.asn.au>
parents: 1404
diff changeset
158 if (!ses.init_done) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
159 /* before session init */
1304
b66a483f3dcb Improve exit message formatting
Matt Johnston <matt@ucc.asn.au>
parents: 1276
diff changeset
160 snprintf(fullmsg, sizeof(fullmsg), "Early exit: %s", exitmsg);
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
161 } else if (ses.authstate.authdone) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
162 /* user has authenticated */
1304
b66a483f3dcb Improve exit message formatting
Matt Johnston <matt@ucc.asn.au>
parents: 1276
diff changeset
163 snprintf(fullmsg, sizeof(fullmsg),
594
a98a2138364a Improve capitalisation for all logged strings
Matt Johnston <matt@ucc.asn.au>
parents: 572
diff changeset
164 "Exit (%s): %s",
1304
b66a483f3dcb Improve exit message formatting
Matt Johnston <matt@ucc.asn.au>
parents: 1276
diff changeset
165 ses.authstate.pw_name, exitmsg);
464
4317be8b7cf9 Make a copy of passwd fields since getpwnam()'s retval isn't safe to keep
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
166 } else if (ses.authstate.pw_name) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
167 /* we have a potential user */
1304
b66a483f3dcb Improve exit message formatting
Matt Johnston <matt@ucc.asn.au>
parents: 1276
diff changeset
168 snprintf(fullmsg, sizeof(fullmsg),
1237
888e3d17e962 Fix print format specifier
Chocobo1 <Chocobo1@users.noreply.github.com>
parents: 1215
diff changeset
169 "Exit before auth (user '%s', %u fails): %s",
1304
b66a483f3dcb Improve exit message formatting
Matt Johnston <matt@ucc.asn.au>
parents: 1276
diff changeset
170 ses.authstate.pw_name, ses.authstate.failcount, exitmsg);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
171 } else {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
172 /* before userauth */
1304
b66a483f3dcb Improve exit message formatting
Matt Johnston <matt@ucc.asn.au>
parents: 1276
diff changeset
173 snprintf(fullmsg, sizeof(fullmsg), "Exit before auth: %s", exitmsg);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
174 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
175
1304
b66a483f3dcb Improve exit message formatting
Matt Johnston <matt@ucc.asn.au>
parents: 1276
diff changeset
176 dropbear_log(LOG_INFO, "%s", fullmsg);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
177
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1276
diff changeset
178 #if DROPBEAR_VFORK
667
fc7ae88e63b3 Rename HAVE_FORK to USE_VFORK
Matt Johnston <matt@ucc.asn.au>
parents: 666
diff changeset
179 /* For uclinux only the main server process should cleanup - we don't want
553
8711f20b89ab - For uclinux, only cleanup on exit for the main process. This avoids
Matt Johnston <matt@ucc.asn.au>
parents: 496
diff changeset
180 * forked children doing that */
8711f20b89ab - For uclinux, only cleanup on exit for the main process. This avoids
Matt Johnston <matt@ucc.asn.au>
parents: 496
diff changeset
181 if (svr_ses.server_pid == getpid())
8711f20b89ab - For uclinux, only cleanup on exit for the main process. This avoids
Matt Johnston <matt@ucc.asn.au>
parents: 496
diff changeset
182 #endif
8711f20b89ab - For uclinux, only cleanup on exit for the main process. This avoids
Matt Johnston <matt@ucc.asn.au>
parents: 496
diff changeset
183 {
8711f20b89ab - For uclinux, only cleanup on exit for the main process. This avoids
Matt Johnston <matt@ucc.asn.au>
parents: 496
diff changeset
184 /* must be after we've done with username etc */
733
70811267715c Run the cleanup handler also when we close due to TCP connection being closed
Matt Johnston <matt@ucc.asn.au>
parents: 726
diff changeset
185 session_cleanup();
553
8711f20b89ab - For uclinux, only cleanup on exit for the main process. This avoids
Matt Johnston <matt@ucc.asn.au>
parents: 496
diff changeset
186 }
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
187
1558
2f64cb3d3007 - #if not #ifdef for DROPBEAR_FUZZ
Matt Johnston <matt@ucc.asn.au>
parents: 1546
diff changeset
188 #if DROPBEAR_FUZZ
1559
92c93b4a3646 Fix to be able to compile normal(ish) binaries with --enable-fuzz
Matt Johnston <matt@ucc.asn.au>
parents: 1558
diff changeset
189 /* longjmp before cleaning up svr_opts */
1385
6c92e97553f1 Add a flag whether to longjmp, missed that last commit
Matt Johnston <matt@ucc.asn.au>
parents: 1358
diff changeset
190 if (fuzz.do_jmp) {
1348
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents: 1347
diff changeset
191 longjmp(fuzz.jmp, 1);
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents: 1347
diff changeset
192 }
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents: 1347
diff changeset
193 #endif
5c2899e35b63 fuzz harness
Matt Johnston <matt@ucc.asn.au>
parents: 1347
diff changeset
194
1040
2b4fd440399d Free memory before exiting. Based on patch from Thorsten Horstmann.
Matt Johnston <matt@ucc.asn.au>
parents: 970
diff changeset
195 if (svr_opts.hostkey) {
2b4fd440399d Free memory before exiting. Based on patch from Thorsten Horstmann.
Matt Johnston <matt@ucc.asn.au>
parents: 970
diff changeset
196 sign_key_free(svr_opts.hostkey);
2b4fd440399d Free memory before exiting. Based on patch from Thorsten Horstmann.
Matt Johnston <matt@ucc.asn.au>
parents: 970
diff changeset
197 svr_opts.hostkey = NULL;
2b4fd440399d Free memory before exiting. Based on patch from Thorsten Horstmann.
Matt Johnston <matt@ucc.asn.au>
parents: 970
diff changeset
198 }
2b4fd440399d Free memory before exiting. Based on patch from Thorsten Horstmann.
Matt Johnston <matt@ucc.asn.au>
parents: 970
diff changeset
199 for (i = 0; i < DROPBEAR_MAX_PORTS; i++) {
2b4fd440399d Free memory before exiting. Based on patch from Thorsten Horstmann.
Matt Johnston <matt@ucc.asn.au>
parents: 970
diff changeset
200 m_free(svr_opts.addresses[i]);
2b4fd440399d Free memory before exiting. Based on patch from Thorsten Horstmann.
Matt Johnston <matt@ucc.asn.au>
parents: 970
diff changeset
201 m_free(svr_opts.ports[i]);
2b4fd440399d Free memory before exiting. Based on patch from Thorsten Horstmann.
Matt Johnston <matt@ucc.asn.au>
parents: 970
diff changeset
202 }
2b4fd440399d Free memory before exiting. Based on patch from Thorsten Horstmann.
Matt Johnston <matt@ucc.asn.au>
parents: 970
diff changeset
203
1347
b28624698130 copy over some fuzzing code from AFL branch
Matt Johnston <matt@ucc.asn.au>
parents: 1304
diff changeset
204
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
205 exit(exitcode);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
206
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
207 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
208
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
209 /* priority is priority as with syslog() */
5
bc6477a6c393 syntactical fixups - it compiles, but channel handling code requires fixing.
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
210 void svr_dropbear_log(int priority, const char* format, va_list param) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
211
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
212 char printbuf[1024];
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
213 char datestr[20];
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
214 time_t timesec;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
215 int havetrace = 0;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
216
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
217 vsnprintf(printbuf, sizeof(printbuf), format, param);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
218
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
219 #ifndef DISABLE_SYSLOG
1210
64a50eac1030 Moved usingsyslog from svr_runopts to runopts.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents: 1139
diff changeset
220 if (opts.usingsyslog) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
221 syslog(priority, "%s", printbuf);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
222 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
223 #endif
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
224
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
225 /* if we are using DEBUG_TRACE, we want to print to stderr even if
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
226 * syslog is used, so it is included in error reports */
1295
750ec4ec4cbe Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents: 1276
diff changeset
227 #if DEBUG_TRACE
98
297167ef41bd Fix for printing out things with inetd mode when we have DEBUG_TRACE
Matt Johnston <matt@ucc.asn.au>
parents: 68
diff changeset
228 havetrace = debug_trace;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
229 #endif
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
230
1215
d058e15ea213 A few minor style fixes
Matt Johnston <matt@ucc.asn.au>
parents: 1210
diff changeset
231 if (!opts.usingsyslog || havetrace) {
404
a588558bfc94 Fix potential null pointer dereference found by Klokwork
Matt Johnston <matt@ucc.asn.au>
parents: 272
diff changeset
232 struct tm * local_tm = NULL;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
233 timesec = time(NULL);
404
a588558bfc94 Fix potential null pointer dereference found by Klokwork
Matt Johnston <matt@ucc.asn.au>
parents: 272
diff changeset
234 local_tm = localtime(&timesec);
a588558bfc94 Fix potential null pointer dereference found by Klokwork
Matt Johnston <matt@ucc.asn.au>
parents: 272
diff changeset
235 if (local_tm == NULL
a588558bfc94 Fix potential null pointer dereference found by Klokwork
Matt Johnston <matt@ucc.asn.au>
parents: 272
diff changeset
236 || strftime(datestr, sizeof(datestr), "%b %d %H:%M:%S",
618
b5cc8878d5ec Properly fix the bug found years ago by Klocwork, refound again.
Matt Johnston <matt@ucc.asn.au>
parents: 594
diff changeset
237 local_tm) == 0)
404
a588558bfc94 Fix potential null pointer dereference found by Klokwork
Matt Johnston <matt@ucc.asn.au>
parents: 272
diff changeset
238 {
433
c216212001fc Fix for -pedantic -ansi compilation, change // to /**/, plus some signedness
Matt Johnston <matt@ucc.asn.au>
parents: 404
diff changeset
239 /* upon failure, just print the epoch-seconds time. */
479
e3db1f7a2e43 - Split main socket var into ses.sock_in/ses.sock_out in preparation
Matt Johnston <matt@ucc.asn.au>
parents: 464
diff changeset
240 snprintf(datestr, sizeof(datestr), "%d", (int)timesec);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
241 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
242 fprintf(stderr, "[%d] %s %s\n", getpid(), datestr, printbuf);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
243 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
244 }
5
bc6477a6c393 syntactical fixups - it compiles, but channel handling code requires fixing.
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
245
bc6477a6c393 syntactical fixups - it compiles, but channel handling code requires fixing.
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
246 /* called when the remote side closes the connection */
bc6477a6c393 syntactical fixups - it compiles, but channel handling code requires fixing.
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
247 static void svr_remoteclosed() {
bc6477a6c393 syntactical fixups - it compiles, but channel handling code requires fixing.
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
248
479
e3db1f7a2e43 - Split main socket var into ses.sock_in/ses.sock_out in preparation
Matt Johnston <matt@ucc.asn.au>
parents: 464
diff changeset
249 m_close(ses.sock_in);
1358
6b89eb92f872 glaring wrapfd problems fixed
Matt Johnston <matt@ucc.asn.au>
parents: 1355
diff changeset
250 if (ses.sock_in != ses.sock_out) {
6b89eb92f872 glaring wrapfd problems fixed
Matt Johnston <matt@ucc.asn.au>
parents: 1355
diff changeset
251 m_close(ses.sock_out);
6b89eb92f872 glaring wrapfd problems fixed
Matt Johnston <matt@ucc.asn.au>
parents: 1355
diff changeset
252 }
479
e3db1f7a2e43 - Split main socket var into ses.sock_in/ses.sock_out in preparation
Matt Johnston <matt@ucc.asn.au>
parents: 464
diff changeset
253 ses.sock_in = -1;
e3db1f7a2e43 - Split main socket var into ses.sock_in/ses.sock_out in preparation
Matt Johnston <matt@ucc.asn.au>
parents: 464
diff changeset
254 ses.sock_out = -1;
5
bc6477a6c393 syntactical fixups - it compiles, but channel handling code requires fixing.
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
255 dropbear_close("Exited normally");
bc6477a6c393 syntactical fixups - it compiles, but channel handling code requires fixing.
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
256
bc6477a6c393 syntactical fixups - it compiles, but channel handling code requires fixing.
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
257 }
bc6477a6c393 syntactical fixups - it compiles, but channel handling code requires fixing.
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
258
1544
d1a8a05216ff make group1 client-only
Matt Johnston <matt@ucc.asn.au>
parents: 1495
diff changeset
259 static void svr_algos_initialise(void) {
d1a8a05216ff make group1 client-only
Matt Johnston <matt@ucc.asn.au>
parents: 1495
diff changeset
260 #if DROPBEAR_DH_GROUP1 && DROPBEAR_DH_GROUP1_CLIENTONLY
d1a8a05216ff make group1 client-only
Matt Johnston <matt@ucc.asn.au>
parents: 1495
diff changeset
261 algo_type *algo;
d1a8a05216ff make group1 client-only
Matt Johnston <matt@ucc.asn.au>
parents: 1495
diff changeset
262 for (algo = sshkex; algo->name; algo++) {
d1a8a05216ff make group1 client-only
Matt Johnston <matt@ucc.asn.au>
parents: 1495
diff changeset
263 if (strcmp(algo->name, "diffie-hellman-group1-sha1") == 0) {
d1a8a05216ff make group1 client-only
Matt Johnston <matt@ucc.asn.au>
parents: 1495
diff changeset
264 algo->usable = 0;
d1a8a05216ff make group1 client-only
Matt Johnston <matt@ucc.asn.au>
parents: 1495
diff changeset
265 }
d1a8a05216ff make group1 client-only
Matt Johnston <matt@ucc.asn.au>
parents: 1495
diff changeset
266 }
d1a8a05216ff make group1 client-only
Matt Johnston <matt@ucc.asn.au>
parents: 1495
diff changeset
267 #endif
d1a8a05216ff make group1 client-only
Matt Johnston <matt@ucc.asn.au>
parents: 1495
diff changeset
268 }
d1a8a05216ff make group1 client-only
Matt Johnston <matt@ucc.asn.au>
parents: 1495
diff changeset
269