dropbear: cli-session.c annotate

annotate cli-session.c @ 188:c9483550701b

- refactored random mp_int generation and byte->mp_int code - added RSA blinding

author	Matt Johnston <matt@ucc.asn.au>
date	Thu, 05 May 2005 03:58:21 +0000
parents	2c5741e4b855
children	aad4b3f58556

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"
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	38
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	39 static void cli_remoteclosed();
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	40 static void cli_sessionloop();
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	41 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	42 static void cli_finished();
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	43
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	44 struct clientsession cli_ses; /* GLOBAL */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	45
45 9ee8996a375f Pubkey auth is mostly there for the client. Something strange with Matt Johnston <matt@ucc.asn.au> parents: 43 diff changeset	46 /* 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	47 * should be first */
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	48 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	49 /* TYPE, FUNCTION */
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	50 {SSH_MSG_CHANNEL_DATA, recv_msg_channel_data},
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 100 diff changeset	51 {SSH_MSG_CHANNEL_EXTENDED_DATA, recv_msg_channel_extended_data},
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 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: 43 diff changeset	53 {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	54 {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	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: 43 diff changeset	56 {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	57 {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	58 {SSH_MSG_SERVICE_ACCEPT, recv_msg_service_accept}, /* client */
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	59 {SSH_MSG_CHANNEL_REQUEST, recv_msg_channel_request},
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	60 {SSH_MSG_CHANNEL_OPEN, recv_msg_channel_open},
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	61 {SSH_MSG_CHANNEL_EOF, recv_msg_channel_eof},
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	62 {SSH_MSG_CHANNEL_CLOSE, recv_msg_channel_close},
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	63 {SSH_MSG_CHANNEL_OPEN_CONFIRMATION, recv_msg_channel_open_confirmation},
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	64 {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	65 {SSH_MSG_USERAUTH_BANNER, recv_msg_userauth_banner}, /* client */
68 eee77ac31ccc cleaning up the pubkey defines Matt Johnston <matt@ucc.asn.au> parents: 65 diff changeset	66 #ifdef ENABLE_CLI_PUBKEY_AUTH
45 9ee8996a375f Pubkey auth is mostly there for the client. Something strange with Matt Johnston <matt@ucc.asn.au> parents: 43 diff changeset	67 {SSH_MSG_USERAUTH_PK_OK, recv_msg_userauth_pk_ok}, /* client */
9ee8996a375f Pubkey auth is mostly there for the client. Something strange with Matt Johnston <matt@ucc.asn.au> parents: 43 diff changeset	68 #endif
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	69 {0, 0} /* End */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	70 };
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	71
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	72 static const struct ChanType *cli_chantypes[] = {
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	73 #ifdef ENABLE_CLI_REMOTETCPFWD
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	74 &cli_chan_tcpremote,
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	75 #endif
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	76 NULL /* Null termination */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	77 };
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	78
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	79 void cli_session(int sock, char* remotehost) {
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	80
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	81 crypto_init();
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	82 common_session_init(sock, remotehost);
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	83
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	84 chaninitialise(cli_chantypes);
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	85
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	86
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	87 /* Set up cli_ses vars */
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	88 cli_session_init();
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	89
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	90 /* Ready to go */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	91 sessinitdone = 1;
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 /* Exchange identification */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	94 session_identification();
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	95
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	96 seedrandom();
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 send_msg_kexinit();
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	99
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	100 /* XXX here we do stuff differently */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	101
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	102 session_loop(cli_sessionloop);
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 /* Not reached */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	105
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	106 }
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	107
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	108 static void cli_session_init() {
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	109
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	110 cli_ses.state = STATE_NOTHING;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	111 cli_ses.kex_state = KEX_NOTHING;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	112
39 0883c0906870 tty raw mode support works mostly Matt Johnston <matt@ucc.asn.au> parents: 37 diff changeset	113 cli_ses.tty_raw_mode = 0;
41 18eccbfb9641 added window-size change handling Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	114 cli_ses.winchange = 0;
39 0883c0906870 tty raw mode support works mostly Matt Johnston <matt@ucc.asn.au> parents: 37 diff changeset	115
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	116 /* 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	117 * (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	118 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	119 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	120 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	121 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	122 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	123 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	124
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	125 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	126 specific exit status */
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	127
47 4b53a43f0082 - client pubkey auth works Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	128 /* Auth */
4b53a43f0082 - client pubkey auth works Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	129 cli_ses.lastpubkey = NULL;
136 fb7147e2fb04 - Fixed a couple of compile warnings Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	130 cli_ses.lastauthtype = 0;
47 4b53a43f0082 - client pubkey auth works Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	131
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	132 /* For printing "remote host closed" for the user */
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	133 ses.remoteclosed = cli_remoteclosed;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	134 ses.buf_match_algo = cli_buf_match_algo;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	135
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	136 /* packet handlers */
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	137 ses.packettypes = cli_packettypes;
35 0ad5fb979f42 set the isserver flag (oops) Matt Johnston <matt@ucc.asn.au> parents: 34 diff changeset	138
0ad5fb979f42 set the isserver flag (oops) Matt Johnston <matt@ucc.asn.au> parents: 34 diff changeset	139 ses.isserver = 0;
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	140 }
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	141
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	142 /* 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	143 * service, userauth and channel requests */
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	144 static void cli_sessionloop() {
0969767bca0d snapshot of stuff 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: 136 diff changeset	146 TRACE(("enter cli_sessionloop"))
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	147
34 e2a1eaa19f22 Client mostly works up to password auth Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	148 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	149 cli_ses.kex_state = KEXINIT_RCVD;
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	150 }
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 (cli_ses.kex_state == KEXINIT_RCVD) {
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	153
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	154 /* 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	155 * negotiation would have failed. */
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	156 send_msg_kexdh_init();
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	157 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	158 TRACE(("leave cli_sessionloop: done with KEXINIT_RCVD"))
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	159 return;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	160 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	161
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	162 /* 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	163 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	164 && ses.kexstate.sentkexinit == 0) {
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	165 cli_ses.kex_state = KEX_NOTHING;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	166 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	167
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	168 /* 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	169 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	170 TRACE(("leave cli_sessionloop: kex_state != KEX_NOTHING"))
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	171 return;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	172 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	173
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	174 /* 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	175 * in normal operation */
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	176 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	177 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	178 return;
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	179 }
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	180
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	181 switch (cli_ses.state) {
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	182
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	183 case STATE_NOTHING:
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	184 /* 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	185 * userauth */
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	186 send_msg_service_request(SSH_SERVICE_USERAUTH);
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	187 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	188 TRACE(("leave cli_sessionloop: sent userauth service req"))
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	189 return;
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	190
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	191 /* userauth code */
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	192 case SERVICE_AUTH_ACCEPT_RCVD:
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	193 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	194 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	195 TRACE(("leave cli_sessionloop: sent userauth methods req"))
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	196 return;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	197
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	198 case USERAUTH_FAIL_RCVD:
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	199 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	200 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	201 TRACE(("leave cli_sessionloop: cli_auth_try"))
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	202 return;
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	203
47 4b53a43f0082 - client pubkey auth works Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	204 /*
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	205 case USERAUTH_SUCCESS_RCVD:
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	206 send_msg_service_request(SSH_SERVICE_CONNECTION);
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	207 cli_ses.state = SERVICE_CONN_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	208 TRACE(("leave cli_sessionloop: sent ssh-connection service req"))
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	209 return;
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	210
45 9ee8996a375f Pubkey auth is mostly there for the client. Something strange with Matt Johnston <matt@ucc.asn.au> parents: 43 diff changeset	211 case SERVICE_CONN_ACCEPT_RCVD:
9ee8996a375f Pubkey auth is mostly there for the client. Something strange with Matt Johnston <matt@ucc.asn.au> parents: 43 diff changeset	212 cli_send_chansess_request();
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	213 TRACE(("leave cli_sessionloop: cli_send_chansess_request"))
45 9ee8996a375f Pubkey auth is mostly there for the client. Something strange with Matt Johnston <matt@ucc.asn.au> parents: 43 diff changeset	214 cli_ses.state = SESSION_RUNNING;
9ee8996a375f Pubkey auth is mostly there for the client. Something strange with Matt Johnston <matt@ucc.asn.au> parents: 43 diff changeset	215 return;
47 4b53a43f0082 - client pubkey auth works Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	216 */
45 9ee8996a375f Pubkey auth is mostly there for the client. Something strange with Matt Johnston <matt@ucc.asn.au> parents: 43 diff changeset	217
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	218 case USERAUTH_SUCCESS_RCVD:
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	219 #ifdef ENABLE_CLI_LOCALTCPFWD
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	220 setup_localtcp();
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	221 #endif
65 02e4a7f614f8 Oops, forgot to call the actual code. Matt Johnston <matt@ucc.asn.au> parents: 64 diff changeset	222 #ifdef ENABLE_CLI_REMOTETCPFWD
02e4a7f614f8 Oops, forgot to call the actual code. Matt Johnston <matt@ucc.asn.au> parents: 64 diff changeset	223 setup_remotetcp();
02e4a7f614f8 Oops, forgot to call the actual code. Matt Johnston <matt@ucc.asn.au> parents: 64 diff changeset	224 #endif
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	225 cli_send_chansess_request();
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	226 TRACE(("leave cli_sessionloop: cli_send_chansess_request"))
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	227 cli_ses.state = SESSION_RUNNING;
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	228 return;
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 35 diff changeset	229
40 b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 39 diff changeset	230 case SESSION_RUNNING:
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 39 diff changeset	231 if (ses.chancount < 1) {
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 39 diff changeset	232 cli_finished();
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 39 diff changeset	233 }
41 18eccbfb9641 added window-size change handling Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	234
18eccbfb9641 added window-size change handling Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	235 if (cli_ses.winchange) {
18eccbfb9641 added window-size change handling Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	236 cli_chansess_winchange();
18eccbfb9641 added window-size change handling Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	237 }
40 b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 39 diff changeset	238 return;
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 39 diff changeset	239
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	240 /* XXX more here needed */
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	241
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	242
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	243 default:
f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	244 break;
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	245 }
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	246
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	247 TRACE(("leave cli_sessionloop: fell out"))
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	248
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	249 }
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	250
40 b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 39 diff changeset	251 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	252
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 39 diff changeset	253 if (!sessinitdone) {
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 39 diff changeset	254 return;
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 39 diff changeset	255 }
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	256
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	257 /* 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	258 * we don't revert the flags */
100 c72f5c10125d oops, the fcntl() was commented out Matt Johnston <matt@ucc.asn.au> parents: 99 diff changeset	259 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	260 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	261 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	262
40 b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 39 diff changeset	263 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	264
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 39 diff changeset	265 }
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 39 diff changeset	266
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 39 diff changeset	267 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	268
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 39 diff changeset	269 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	270 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	271 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	272 cli_opts.remotehost, cli_opts.remoteport);
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	273 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	274 }
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 39 diff changeset	275
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 39 diff changeset	276
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	277 /* called when the remote side closes the connection */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	278 static void cli_remoteclosed() {
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	279
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	280 /* 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	281 * already sent/received disconnect message(s) ??? */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	282 close(ses.sock);
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	283 ses.sock = -1;
33 f789045062e6 Progressing client support Matt Johnston <matt@ucc.asn.au> parents: 26 diff changeset	284 dropbear_exit("remote closed the connection");
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: diff changeset	285 }
43 942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 41 diff changeset	286
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 41 diff changeset	287 /* Operates in-place turning dirty (untrusted potentially containing control
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 41 diff changeset	288 * characters) text into clean text. */
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 41 diff changeset	289 void cleantext(unsigned char* dirtytext) {
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 41 diff changeset	290
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 41 diff changeset	291 unsigned int i, j;
47 4b53a43f0082 - client pubkey auth works Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	292 unsigned char c;
43 942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 41 diff changeset	293
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 41 diff changeset	294 j = 0;
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 41 diff changeset	295 for (i = 0; dirtytext[i] != '\0'; i++) {
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 41 diff changeset	296
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 41 diff changeset	297 c = dirtytext[i];
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 41 diff changeset	298 /* We can ignore '\r's */
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 41 diff changeset	299 if ( (c >= ' ' && c <= '~') \|\| c == '\n' \|\| c == '\t') {
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 41 diff changeset	300 dirtytext[j] = c;
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 41 diff changeset	301 j++;
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 41 diff changeset	302 }
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 /* Null terminate */
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 41 diff changeset	305 dirtytext[j] = '\0';
942b22d7dd1c Banner printing Matt Johnston <matt@ucc.asn.au> parents: 41 diff changeset	306 }

Mercurial > dropbear

annotate cli-session.c @ 188:c9483550701b