annotate cli-session.c @ 587:1151059c5eff

Work properly again with bundled libtom*. autoconf is a hassle.
author Matt Johnston <matt@ucc.asn.au>
date Wed, 21 Jul 2010 13:27:44 +0000
parents 005530560594
children a98a2138364a
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: 68
diff changeset
1 /*
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 68
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: 68
diff changeset
3 *
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 68
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: 68
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: 68
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: 68
diff changeset
7 *
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 68
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: 68
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: 68
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: 68
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: 68
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: 68
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: 68
diff changeset
14 *
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 68
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: 68
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: 68
diff changeset
17 *
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 68
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: 68
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: 68
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: 68
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: 68
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: 68
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: 68
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: 68
diff changeset
25
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
26 #include "includes.h"
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
27 #include "session.h"
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
28 #include "dbutil.h"
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
29 #include "kex.h"
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
30 #include "ssh.h"
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
31 #include "packet.h"
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
32 #include "tcpfwd.h"
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
33 #include "channel.h"
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
34 #include "random.h"
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
35 #include "service.h"
40
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
36 #include "runopts.h"
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
37 #include "chansession.h"
547
cf376c696dfc Make it compile, update for changes in channel structure.
Matt Johnston <matt@ucc.asn.au>
parents: 546
diff changeset
38 #include "agentfwd.h"
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
39
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
40 static void cli_remoteclosed();
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
41 static void cli_sessionloop();
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
42 static void cli_session_init();
40
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
43 static void cli_finished();
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
44
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
45 struct clientsession cli_ses; /* GLOBAL */
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
46
45
9ee8996a375f Pubkey auth is mostly there for the client. Something strange with
Matt Johnston <matt@ucc.asn.au>
parents: 43
diff changeset
47 /* Sorted in decreasing frequency will be more efficient - data and window
9ee8996a375f Pubkey auth is mostly there for the client. Something strange with
Matt Johnston <matt@ucc.asn.au>
parents: 43
diff changeset
48 * should be first */
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
49 static const packettype cli_packettypes[] = {
74
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files
Matt Johnston <matt@ucc.asn.au>
parents: 68
diff changeset
50 /* TYPE, FUNCTION */
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
51 {SSH_MSG_CHANNEL_DATA, recv_msg_channel_data},
107
Matt Johnston <matt@ucc.asn.au>
parents: 100
diff changeset
52 {SSH_MSG_CHANNEL_EXTENDED_DATA, recv_msg_channel_extended_data},
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
53 {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: 43
diff changeset
54 {SSH_MSG_USERAUTH_FAILURE, recv_msg_userauth_failure}, /* client */
9ee8996a375f Pubkey auth is mostly there for the client. Something strange with
Matt Johnston <matt@ucc.asn.au>
parents: 43
diff changeset
55 {SSH_MSG_USERAUTH_SUCCESS, recv_msg_userauth_success}, /* client */
9ee8996a375f Pubkey auth is mostly there for the client. Something strange with
Matt Johnston <matt@ucc.asn.au>
parents: 43
diff changeset
56 {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: 43
diff changeset
57 {SSH_MSG_KEXDH_REPLY, recv_msg_kexdh_reply}, /* client */
9ee8996a375f Pubkey auth is mostly there for the client. Something strange with
Matt Johnston <matt@ucc.asn.au>
parents: 43
diff changeset
58 {SSH_MSG_NEWKEYS, recv_msg_newkeys},
9ee8996a375f Pubkey auth is mostly there for the client. Something strange with
Matt Johnston <matt@ucc.asn.au>
parents: 43
diff changeset
59 {SSH_MSG_SERVICE_ACCEPT, recv_msg_service_accept}, /* client */
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
60 {SSH_MSG_CHANNEL_REQUEST, recv_msg_channel_request},
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
61 {SSH_MSG_CHANNEL_OPEN, recv_msg_channel_open},
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
62 {SSH_MSG_CHANNEL_EOF, recv_msg_channel_eof},
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
63 {SSH_MSG_CHANNEL_CLOSE, recv_msg_channel_close},
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
64 {SSH_MSG_CHANNEL_OPEN_CONFIRMATION, recv_msg_channel_open_confirmation},
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
65 {SSH_MSG_CHANNEL_OPEN_FAILURE, recv_msg_channel_open_failure},
45
9ee8996a375f Pubkey auth is mostly there for the client. Something strange with
Matt Johnston <matt@ucc.asn.au>
parents: 43
diff changeset
66 {SSH_MSG_USERAUTH_BANNER, recv_msg_userauth_banner}, /* client */
249
efbaf6b03837 added keyboard-interactive client support
Matt Johnston <matt@ucc.asn.au>
parents: 215
diff changeset
67 {SSH_MSG_USERAUTH_SPECIFIC_60, recv_msg_userauth_specific_60}, /* client */
505
805e557fdff7 Report errors if a remote request fails
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
68 #ifdef ENABLE_CLI_REMOTETCPFWD
805e557fdff7 Report errors if a remote request fails
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
69 {SSH_MSG_REQUEST_SUCCESS, cli_recv_msg_request_success}, /* client */
805e557fdff7 Report errors if a remote request fails
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
70 {SSH_MSG_REQUEST_FAILURE, cli_recv_msg_request_failure}, /* client */
805e557fdff7 Report errors if a remote request fails
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
71 #endif
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
72 {0, 0} /* End */
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
73 };
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
74
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
75 static const struct ChanType *cli_chantypes[] = {
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
76 #ifdef ENABLE_CLI_REMOTETCPFWD
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
77 &cli_chan_tcpremote,
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
78 #endif
225
ca7e76d981d9 - progress towards client agent forwarding
Matt Johnston <matt@ucc.asn.au>
parents: 215
diff changeset
79 #ifdef ENABLE_CLI_AGENTFWD
ca7e76d981d9 - progress towards client agent forwarding
Matt Johnston <matt@ucc.asn.au>
parents: 215
diff changeset
80 &cli_chan_agent,
ca7e76d981d9 - progress towards client agent forwarding
Matt Johnston <matt@ucc.asn.au>
parents: 215
diff changeset
81 #endif
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
82 NULL /* Null termination */
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
83 };
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
84
568
005530560594 Rearrange getaddrstring() etc
Matt Johnston <matt@ucc.asn.au>
parents: 560
diff changeset
85 void cli_session(int sock_in, int sock_out) {
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
86
272
3be7ae2e8dfa Only read /dev/random once when the program starts
Matt Johnston <matt@ucc.asn.au>
parents: 249
diff changeset
87 seedrandom();
3be7ae2e8dfa Only read /dev/random once when the program starts
Matt Johnston <matt@ucc.asn.au>
parents: 249
diff changeset
88
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
89 crypto_init();
272
3be7ae2e8dfa Only read /dev/random once when the program starts
Matt Johnston <matt@ucc.asn.au>
parents: 249
diff changeset
90
568
005530560594 Rearrange getaddrstring() etc
Matt Johnston <matt@ucc.asn.au>
parents: 560
diff changeset
91 common_session_init(sock_in, sock_out);
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
92
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
93 chaninitialise(cli_chantypes);
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
94
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
95 /* Set up cli_ses vars */
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
96 cli_session_init();
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
97
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
98 /* Ready to go */
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
99 sessinitdone = 1;
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
100
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
101 /* Exchange identification */
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
102 session_identification();
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
103
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
104 send_msg_kexinit();
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
105
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
106 session_loop(cli_sessionloop);
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
107
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
108 /* Not reached */
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
109
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
110 }
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
111
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
112 static void cli_session_init() {
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
113
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
114 cli_ses.state = STATE_NOTHING;
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
115 cli_ses.kex_state = KEX_NOTHING;
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
116
39
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents: 37
diff changeset
117 cli_ses.tty_raw_mode = 0;
41
18eccbfb9641 added window-size change handling
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
118 cli_ses.winchange = 0;
39
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents: 37
diff changeset
119
175
2c5741e4b855 * Reset the non-blocking status of stdout and stderr as well on exit
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
120 /* We store std{in,out,err}'s flags, so we can set them back on exit
2c5741e4b855 * Reset the non-blocking status of stdout and stderr as well on exit
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
121 * (otherwise busybox's ash isn't happy */
99
0247fbd9379d Move the revert-to-non-blocking-stdin code to cli-session so it
Matt Johnston <matt@ucc.asn.au>
parents: 74
diff changeset
122 cli_ses.stdincopy = dup(STDIN_FILENO);
0247fbd9379d Move the revert-to-non-blocking-stdin code to cli-session so it
Matt Johnston <matt@ucc.asn.au>
parents: 74
diff changeset
123 cli_ses.stdinflags = fcntl(STDIN_FILENO, F_GETFL, 0);
175
2c5741e4b855 * Reset the non-blocking status of stdout and stderr as well on exit
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
124 cli_ses.stdoutcopy = dup(STDOUT_FILENO);
2c5741e4b855 * Reset the non-blocking status of stdout and stderr as well on exit
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
125 cli_ses.stdoutflags = fcntl(STDOUT_FILENO, F_GETFL, 0);
2c5741e4b855 * Reset the non-blocking status of stdout and stderr as well on exit
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
126 cli_ses.stderrcopy = dup(STDERR_FILENO);
2c5741e4b855 * Reset the non-blocking status of stdout and stderr as well on exit
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
127 cli_ses.stderrflags = fcntl(STDERR_FILENO, F_GETFL, 0);
99
0247fbd9379d Move the revert-to-non-blocking-stdin code to cli-session so it
Matt Johnston <matt@ucc.asn.au>
parents: 74
diff changeset
128
108
10f4d3319780 - added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents: 107
diff changeset
129 cli_ses.retval = EXIT_SUCCESS; /* Assume it's clean if we don't get a
10f4d3319780 - added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents: 107
diff changeset
130 specific exit status */
10f4d3319780 - added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents: 107
diff changeset
131
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
132 /* Auth */
215
aad4b3f58556 rename PubkeyList to SignKeyList for clarity
Matt Johnston <matt@ucc.asn.au>
parents: 175
diff changeset
133 cli_ses.lastprivkey = NULL;
136
fb7147e2fb04 - Fixed a couple of compile warnings
Matt Johnston <matt@ucc.asn.au>
parents: 108
diff changeset
134 cli_ses.lastauthtype = 0;
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
135
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
136 /* For printing "remote host closed" for the user */
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
137 ses.remoteclosed = cli_remoteclosed;
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
138 ses.buf_match_algo = cli_buf_match_algo;
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
139
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
140 /* packet handlers */
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
141 ses.packettypes = cli_packettypes;
35
0ad5fb979f42 set the isserver flag (oops)
Matt Johnston <matt@ucc.asn.au>
parents: 34
diff changeset
142
0ad5fb979f42 set the isserver flag (oops)
Matt Johnston <matt@ucc.asn.au>
parents: 34
diff changeset
143 ses.isserver = 0;
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
144 }
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
145
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
146 /* This function drives the progress of the session - it initiates KEX,
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
147 * service, userauth and channel requests */
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
148 static void cli_sessionloop() {
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
149
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 136
diff changeset
150 TRACE(("enter cli_sessionloop"))
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
151
34
e2a1eaa19f22 Client mostly works up to password auth
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
152 if (ses.lastpacket == SSH_MSG_KEXINIT && cli_ses.kex_state == KEX_NOTHING) {
e2a1eaa19f22 Client mostly works up to password auth
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
153 cli_ses.kex_state = KEXINIT_RCVD;
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
154 }
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
155
34
e2a1eaa19f22 Client mostly works up to password auth
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
156 if (cli_ses.kex_state == KEXINIT_RCVD) {
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
157
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
158 /* We initiate the KEXDH. If DH wasn't the correct type, the KEXINIT
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
159 * negotiation would have failed. */
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
160 send_msg_kexdh_init();
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
161 cli_ses.kex_state = KEXDH_INIT_SENT;
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 136
diff changeset
162 TRACE(("leave cli_sessionloop: done with KEXINIT_RCVD"))
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
163 return;
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
164 }
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
165
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
166 /* A KEX has finished, so we should go back to our KEX_NOTHING state */
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
167 if (cli_ses.kex_state != KEX_NOTHING && ses.kexstate.recvkexinit == 0
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
168 && ses.kexstate.sentkexinit == 0) {
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
169 cli_ses.kex_state = KEX_NOTHING;
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
170 }
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
171
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
172 /* We shouldn't do anything else if a KEX is in progress */
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
173 if (cli_ses.kex_state != KEX_NOTHING) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 136
diff changeset
174 TRACE(("leave cli_sessionloop: kex_state != KEX_NOTHING"))
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
175 return;
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
176 }
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
177
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
178 /* We should exit if we haven't donefirstkex: we shouldn't reach here
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
179 * in normal operation */
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
180 if (ses.kexstate.donefirstkex == 0) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 136
diff changeset
181 TRACE(("XXX XXX might be bad! leave cli_sessionloop: haven't donefirstkex"))
34
e2a1eaa19f22 Client mostly works up to password auth
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
182 return;
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
183 }
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
184
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
185 switch (cli_ses.state) {
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
186
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
187 case STATE_NOTHING:
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
188 /* We've got the transport layer sorted, we now need to request
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
189 * userauth */
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
190 send_msg_service_request(SSH_SERVICE_USERAUTH);
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
191 cli_ses.state = SERVICE_AUTH_REQ_SENT;
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 136
diff changeset
192 TRACE(("leave cli_sessionloop: sent userauth service req"))
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
193 return;
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
194
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
195 /* userauth code */
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
196 case SERVICE_AUTH_ACCEPT_RCVD:
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
197 cli_auth_getmethods();
45
9ee8996a375f Pubkey auth is mostly there for the client. Something strange with
Matt Johnston <matt@ucc.asn.au>
parents: 43
diff changeset
198 cli_ses.state = USERAUTH_REQ_SENT;
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 136
diff changeset
199 TRACE(("leave cli_sessionloop: sent userauth methods req"))
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
200 return;
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
201
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
202 case USERAUTH_FAIL_RCVD:
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
203 cli_auth_try();
45
9ee8996a375f Pubkey auth is mostly there for the client. Something strange with
Matt Johnston <matt@ucc.asn.au>
parents: 43
diff changeset
204 cli_ses.state = USERAUTH_REQ_SENT;
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 136
diff changeset
205 TRACE(("leave cli_sessionloop: cli_auth_try"))
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
206 return;
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
207
37
0913e2ee3545 we're nearly there yet
Matt Johnston <matt@ucc.asn.au>
parents: 35
diff changeset
208 case USERAUTH_SUCCESS_RCVD:
326
d965110e3f5c add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
209
d965110e3f5c add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
210 if (cli_opts.backgrounded) {
d965110e3f5c add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
211 int devnull;
433
c216212001fc Fix for -pedantic -ansi compilation, change // to /**/, plus some signedness
Matt Johnston <matt@ucc.asn.au>
parents: 326
diff changeset
212 /* keeping stdin open steals input from the terminal and
c216212001fc Fix for -pedantic -ansi compilation, change // to /**/, plus some signedness
Matt Johnston <matt@ucc.asn.au>
parents: 326
diff changeset
213 is confusing, though stdout/stderr could be useful. */
326
d965110e3f5c add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
214 devnull = open(_PATH_DEVNULL, O_RDONLY);
d965110e3f5c add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
215 if (devnull < 0) {
d965110e3f5c add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
216 dropbear_exit("opening /dev/null: %d %s",
d965110e3f5c add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
217 errno, strerror(errno));
d965110e3f5c add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
218 }
d965110e3f5c add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
219 dup2(devnull, STDIN_FILENO);
d965110e3f5c add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
220 if (daemon(0, 1) < 0) {
d965110e3f5c add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
221 dropbear_exit("Backgrounding failed: %d %s",
d965110e3f5c add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
222 errno, strerror(errno));
d965110e3f5c add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
223 }
d965110e3f5c add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
224 }
d965110e3f5c add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
225
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
226 #ifdef ENABLE_CLI_LOCALTCPFWD
485
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 478
diff changeset
227 setup_localtcp();
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
228 #endif
65
02e4a7f614f8 Oops, forgot to call the actual code.
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
229 #ifdef ENABLE_CLI_REMOTETCPFWD
485
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 478
diff changeset
230 setup_remotetcp();
65
02e4a7f614f8 Oops, forgot to call the actual code.
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
231 #endif
485
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 478
diff changeset
232
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 478
diff changeset
233 #ifdef ENABLE_CLI_NETCAT
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 478
diff changeset
234 if (cli_opts.netcat_host) {
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 478
diff changeset
235 cli_send_netcat_request();
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 478
diff changeset
236 } else
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 478
diff changeset
237 #endif
560
52d7301e46bd Agent forwarding works
Matt Johnston <matt@ucc.asn.au>
parents: 547
diff changeset
238 if (!cli_opts.no_cmd) {
325
0e4f225b7e07 Add -N "no remote command" dbclient option.
Matt Johnston <matt@ucc.asn.au>
parents: 272
diff changeset
239 cli_send_chansess_request();
0e4f225b7e07 Add -N "no remote command" dbclient option.
Matt Johnston <matt@ucc.asn.au>
parents: 272
diff changeset
240 }
0e4f225b7e07 Add -N "no remote command" dbclient option.
Matt Johnston <matt@ucc.asn.au>
parents: 272
diff changeset
241 TRACE(("leave cli_sessionloop: running"))
37
0913e2ee3545 we're nearly there yet
Matt Johnston <matt@ucc.asn.au>
parents: 35
diff changeset
242 cli_ses.state = SESSION_RUNNING;
0913e2ee3545 we're nearly there yet
Matt Johnston <matt@ucc.asn.au>
parents: 35
diff changeset
243 return;
0913e2ee3545 we're nearly there yet
Matt Johnston <matt@ucc.asn.au>
parents: 35
diff changeset
244
40
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
245 case SESSION_RUNNING:
325
0e4f225b7e07 Add -N "no remote command" dbclient option.
Matt Johnston <matt@ucc.asn.au>
parents: 272
diff changeset
246 if (ses.chancount < 1 && !cli_opts.no_cmd) {
40
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
247 cli_finished();
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
248 }
41
18eccbfb9641 added window-size change handling
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
249
18eccbfb9641 added window-size change handling
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
250 if (cli_ses.winchange) {
18eccbfb9641 added window-size change handling
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
251 cli_chansess_winchange();
18eccbfb9641 added window-size change handling
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
252 }
40
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
253 return;
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
254
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
255 /* XXX more here needed */
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
256
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
257
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
258 default:
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
259 break;
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
260 }
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
261
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 136
diff changeset
262 TRACE(("leave cli_sessionloop: fell out"))
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
263
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
264 }
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
265
40
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
266 void cli_session_cleanup() {
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
267
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
268 if (!sessinitdone) {
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
269 return;
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
270 }
99
0247fbd9379d Move the revert-to-non-blocking-stdin code to cli-session so it
Matt Johnston <matt@ucc.asn.au>
parents: 74
diff changeset
271
175
2c5741e4b855 * Reset the non-blocking status of stdout and stderr as well on exit
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
272 /* Set std{in,out,err} back to non-blocking - busybox ash dies nastily if
2c5741e4b855 * Reset the non-blocking status of stdout and stderr as well on exit
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
273 * we don't revert the flags */
100
c72f5c10125d oops, the fcntl() was commented out
Matt Johnston <matt@ucc.asn.au>
parents: 99
diff changeset
274 fcntl(cli_ses.stdincopy, F_SETFL, cli_ses.stdinflags);
175
2c5741e4b855 * Reset the non-blocking status of stdout and stderr as well on exit
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
275 fcntl(cli_ses.stdoutcopy, F_SETFL, cli_ses.stdoutflags);
2c5741e4b855 * Reset the non-blocking status of stdout and stderr as well on exit
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
276 fcntl(cli_ses.stderrcopy, F_SETFL, cli_ses.stderrflags);
99
0247fbd9379d Move the revert-to-non-blocking-stdin code to cli-session so it
Matt Johnston <matt@ucc.asn.au>
parents: 74
diff changeset
277
40
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
278 cli_tty_cleanup();
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
279
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
280 }
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
281
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
282 static void cli_finished() {
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
283
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
284 cli_session_cleanup();
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
285 common_session_cleanup();
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
286 fprintf(stderr, "Connection to %s@%s:%s closed.\n", cli_opts.username,
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
287 cli_opts.remotehost, cli_opts.remoteport);
108
10f4d3319780 - added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents: 107
diff changeset
288 exit(cli_ses.retval);
40
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
289 }
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
290
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 39
diff changeset
291
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
292 /* called when the remote side closes the connection */
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
293 static void cli_remoteclosed() {
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
294
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
295 /* XXX TODO perhaps print a friendlier message if we get this but have
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
296 * already sent/received disconnect message(s) ??? */
479
e3db1f7a2e43 - Split main socket var into ses.sock_in/ses.sock_out in preparation
Matt Johnston <matt@ucc.asn.au>
parents: 433
diff changeset
297 m_close(ses.sock_in);
e3db1f7a2e43 - Split main socket var into ses.sock_in/ses.sock_out in preparation
Matt Johnston <matt@ucc.asn.au>
parents: 433
diff changeset
298 m_close(ses.sock_out);
e3db1f7a2e43 - Split main socket var into ses.sock_in/ses.sock_out in preparation
Matt Johnston <matt@ucc.asn.au>
parents: 433
diff changeset
299 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: 433
diff changeset
300 ses.sock_out = -1;
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 26
diff changeset
301 dropbear_exit("remote closed the connection");
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
302 }
43
942b22d7dd1c Banner printing
Matt Johnston <matt@ucc.asn.au>
parents: 41
diff changeset
303
942b22d7dd1c Banner printing
Matt Johnston <matt@ucc.asn.au>
parents: 41
diff changeset
304 /* Operates in-place turning dirty (untrusted potentially containing control
249
efbaf6b03837 added keyboard-interactive client support
Matt Johnston <matt@ucc.asn.au>
parents: 215
diff changeset
305 * characters) text into clean text.
efbaf6b03837 added keyboard-interactive client support
Matt Johnston <matt@ucc.asn.au>
parents: 215
diff changeset
306 * Note: this is safe only with ascii - other charsets could have problems. */
43
942b22d7dd1c Banner printing
Matt Johnston <matt@ucc.asn.au>
parents: 41
diff changeset
307 void cleantext(unsigned char* dirtytext) {
942b22d7dd1c Banner printing
Matt Johnston <matt@ucc.asn.au>
parents: 41
diff changeset
308
942b22d7dd1c Banner printing
Matt Johnston <matt@ucc.asn.au>
parents: 41
diff changeset
309 unsigned int i, j;
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 45
diff changeset
310 unsigned char c;
43
942b22d7dd1c Banner printing
Matt Johnston <matt@ucc.asn.au>
parents: 41
diff changeset
311
942b22d7dd1c Banner printing
Matt Johnston <matt@ucc.asn.au>
parents: 41
diff changeset
312 j = 0;
942b22d7dd1c Banner printing
Matt Johnston <matt@ucc.asn.au>
parents: 41
diff changeset
313 for (i = 0; dirtytext[i] != '\0'; i++) {
942b22d7dd1c Banner printing
Matt Johnston <matt@ucc.asn.au>
parents: 41
diff changeset
314
942b22d7dd1c Banner printing
Matt Johnston <matt@ucc.asn.au>
parents: 41
diff changeset
315 c = dirtytext[i];
942b22d7dd1c Banner printing
Matt Johnston <matt@ucc.asn.au>
parents: 41
diff changeset
316 /* We can ignore '\r's */
942b22d7dd1c Banner printing
Matt Johnston <matt@ucc.asn.au>
parents: 41
diff changeset
317 if ( (c >= ' ' && c <= '~') || c == '\n' || c == '\t') {
942b22d7dd1c Banner printing
Matt Johnston <matt@ucc.asn.au>
parents: 41
diff changeset
318 dirtytext[j] = c;
942b22d7dd1c Banner printing
Matt Johnston <matt@ucc.asn.au>
parents: 41
diff changeset
319 j++;
942b22d7dd1c Banner printing
Matt Johnston <matt@ucc.asn.au>
parents: 41
diff changeset
320 }
942b22d7dd1c Banner printing
Matt Johnston <matt@ucc.asn.au>
parents: 41
diff changeset
321 }
942b22d7dd1c Banner printing
Matt Johnston <matt@ucc.asn.au>
parents: 41
diff changeset
322 /* Null terminate */
942b22d7dd1c Banner printing
Matt Johnston <matt@ucc.asn.au>
parents: 41
diff changeset
323 dirtytext[j] = '\0';
942b22d7dd1c Banner printing
Matt Johnston <matt@ucc.asn.au>
parents: 41
diff changeset
324 }