dropbear: svr-chansession.c annotate

annotate svr-chansession.c @ 711:f4232b65b316

Fix "-m none" case where an entire packet fits in a block and can be read by read_packet_init()

author	Matt Johnston <matt@ucc.asn.au>
date	Wed, 20 Mar 2013 23:13:19 +0800
parents	167fdc091c05
children	bcfa7f779531

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 "packet.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	27 #include "buffer.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	28 #include "session.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	29 #include "dbutil.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	30 #include "channel.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	31 #include "chansession.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	32 #include "sshpty.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	33 #include "termcodes.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	34 #include "ssh.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	35 #include "random.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	36 #include "x11fwd.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	37 #include "agentfwd.h"
24 469950e86d0f switching to global vars Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	38 #include "runopts.h"
475 52a644e7b8e1 * Patch from Frédéric Moulins adding options to authorized_keys. Matt Johnston <matt@ucc.asn.au> parents: 466 diff changeset	39 #include "auth.h"
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	40
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	41 /* Handles sessions (either shells or programs) requested by the client */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	42
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	43 static int sessioncommand(struct Channel channel, struct ChanSess chansess,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	44 int iscmd, int issubsys);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	45 static int sessionpty(struct ChanSess * chansess);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	46 static int sessionsignal(struct ChanSess *chansess);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	47 static int noptycommand(struct Channel channel, struct ChanSess chansess);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	48 static int ptycommand(struct Channel channel, struct ChanSess chansess);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	49 static int sessionwinchange(struct ChanSess *chansess);
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	50 static void execchild(void *user_data_chansess);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	51 static void addchildpid(struct ChanSess *chansess, pid_t pid);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	52 static void sesssigchild_handler(int val);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	53 static void closechansess(struct Channel *channel);
6 ab00ef513e97 Sorted out the first channel init issues. Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	54 static int newchansess(struct Channel *channel);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	55 static void chansessionrequest(struct Channel *channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	56
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	57 static void send_exitsignalstatus(struct Channel *channel);
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 96 diff changeset	58 static void send_msg_chansess_exitstatus(struct Channel * channel,
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 96 diff changeset	59 struct ChanSess * chansess);
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 96 diff changeset	60 static void send_msg_chansess_exitsignal(struct Channel * channel,
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 96 diff changeset	61 struct ChanSess * chansess);
40 b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	62 static void get_termmodes(struct ChanSess *chansess);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	63
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	64
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	65 /* required to clear environment */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	66 extern char** environ;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	67
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	68 static int sesscheckclose(struct Channel *channel) {
364 90cb290836de Passes most test cases now Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	69 struct ChanSess chansess = (struct ChanSess)channel->typedata;
423 b2b67cfcd66e - Fix bug in child-exit handling where the wrong pid was being matched. Matt Johnston <matt@ucc.asn.au> parents: 416 diff changeset	70 TRACE(("sesscheckclose, pid is %d", chansess->exit.exitpid))
364 90cb290836de Passes most test cases now Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	71 return chansess->exit.exitpid != -1;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	72 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	73
130 154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	74 /* Handler for childs exiting, store the state for return to the client */
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	75
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	76 /* There's a particular race we have to watch out for: if the forked child
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	77 * executes, exits, and this signal-handler is called, all before the parent
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	78 * gets to run, then the childpids[] array won't have the pid in it. Hence we
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	79 * use the svr_ses.lastexit struct to hold the exit, which is then compared by
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	80 * the parent when it runs. This work correctly at least in the case of a
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	81 * single shell spawned (ie the usual case) */
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 96 diff changeset	82 static void sesssigchild_handler(int UNUSED(dummy)) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	83
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	84 int status;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	85 pid_t pid;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	86 unsigned int i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	87 struct sigaction sa_chld;
130 154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	88 struct exitinfo *exit = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	89
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 133 diff changeset	90 TRACE(("enter sigchld handler"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	91 while ((pid = waitpid(-1, &status, WNOHANG)) > 0) {
423 b2b67cfcd66e - Fix bug in child-exit handling where the wrong pid was being matched. Matt Johnston <matt@ucc.asn.au> parents: 416 diff changeset	92 TRACE(("sigchld handler: pid %d", pid))
341 2eb5a8514905 Make flow of execution clearer for getting process exit status Matt Johnston <matt@ucc.asn.au> parents: 331 diff changeset	93
2eb5a8514905 Make flow of execution clearer for getting process exit status Matt Johnston <matt@ucc.asn.au> parents: 331 diff changeset	94 exit = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	95 /* find the corresponding chansess */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	96 for (i = 0; i < svr_ses.childpidsize; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	97 if (svr_ses.childpids[i].pid == pid) {
423 b2b67cfcd66e - Fix bug in child-exit handling where the wrong pid was being matched. Matt Johnston <matt@ucc.asn.au> parents: 416 diff changeset	98 TRACE(("found match session"));
130 154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	99 exit = &svr_ses.childpids[i].chansess->exit;
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	100 break;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	101 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	102 }
130 154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	103
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	104 /* If the pid wasn't matched, then we might have hit the race mentioned
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	105 * above. So we just store the info for the parent to deal with */
369 8eaa6e3ca6eb make code clearer and more robust (from Klocwork) Matt Johnston <matt@ucc.asn.au> parents: 279 diff changeset	106 if (exit == NULL) {
423 b2b67cfcd66e - Fix bug in child-exit handling where the wrong pid was being matched. Matt Johnston <matt@ucc.asn.au> parents: 416 diff changeset	107 TRACE(("using lastexit"));
130 154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	108 exit = &svr_ses.lastexit;
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	109 }
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	110
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	111 exit->exitpid = pid;
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	112 if (WIFEXITED(status)) {
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	113 exit->exitstatus = WEXITSTATUS(status);
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	114 }
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	115 if (WIFSIGNALED(status)) {
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	116 exit->exitsignal = WTERMSIG(status);
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	117 #if !defined(AIX) && defined(WCOREDUMP)
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	118 exit->exitcore = WCOREDUMP(status);
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	119 #else
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	120 exit->exitcore = 0;
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	121 #endif
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	122 } else {
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	123 /* we use this to determine how pid exited */
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	124 exit->exitsignal = -1;
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	125 }
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 402 diff changeset	126
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 402 diff changeset	127 /* Make sure that the main select() loop wakes up */
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 402 diff changeset	128 while (1) {
427 5df05d0a5366 Revert to default sigchld handler after forking, don't exit Matt Johnston <matt@ucc.asn.au> parents: 423 diff changeset	129 /* isserver is just a random byte to write. We can't do anything
5df05d0a5366 Revert to default sigchld handler after forking, don't exit Matt Johnston <matt@ucc.asn.au> parents: 423 diff changeset	130 about an error so should just ignore it */
5df05d0a5366 Revert to default sigchld handler after forking, don't exit Matt Johnston <matt@ucc.asn.au> parents: 423 diff changeset	131 if (write(ses.signal_pipe[1], &ses.isserver, 1) == 1
5df05d0a5366 Revert to default sigchld handler after forking, don't exit Matt Johnston <matt@ucc.asn.au> parents: 423 diff changeset	132 \|\| errno != EINTR) {
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 402 diff changeset	133 break;
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 402 diff changeset	134 }
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 402 diff changeset	135 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	136 }
130 154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	137
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	138 sa_chld.sa_handler = sesssigchild_handler;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	139 sa_chld.sa_flags = SA_NOCLDSTOP;
658 d4d0279710b9 - Initialise sa_mask properly Matt Johnston <matt@ucc.asn.au> parents: 657 diff changeset	140 sigemptyset(&sa_chld.sa_mask);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	141 sigaction(SIGCHLD, &sa_chld, NULL);
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 133 diff changeset	142 TRACE(("leave sigchld handler"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	143 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	144
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	145 /* send the exit status or the signal causing termination for a session */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	146 static void send_exitsignalstatus(struct Channel *channel) {
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 struct ChanSess chansess = (struct ChanSess)channel->typedata;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	149
130 154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	150 if (chansess->exit.exitpid >= 0) {
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	151 if (chansess->exit.exitsignal > 0) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	152 send_msg_chansess_exitsignal(channel, chansess);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	153 } else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	154 send_msg_chansess_exitstatus(channel, chansess);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	155 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	156 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	157 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	158
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	159 /* send the exitstatus to the client */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	160 static void send_msg_chansess_exitstatus(struct Channel * channel,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	161 struct ChanSess * chansess) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	162
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 208 diff changeset	163 dropbear_assert(chansess->exit.exitpid != -1);
c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 208 diff changeset	164 dropbear_assert(chansess->exit.exitsignal == -1);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	165
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	166 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	167
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	168 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_REQUEST);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	169 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	170 buf_putstring(ses.writepayload, "exit-status", 11);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	171 buf_putbyte(ses.writepayload, 0); /* boolean FALSE */
130 154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	172 buf_putint(ses.writepayload, chansess->exit.exitstatus);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	173
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	174 encrypt_packet();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	175
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	176 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	177
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	178 /* send the signal causing the exit to the client */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	179 static void send_msg_chansess_exitsignal(struct Channel * channel,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	180 struct ChanSess * chansess) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	181
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	182 int i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	183 char* signame = NULL;
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 208 diff changeset	184 dropbear_assert(chansess->exit.exitpid != -1);
c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 208 diff changeset	185 dropbear_assert(chansess->exit.exitsignal > 0);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	186
423 b2b67cfcd66e - Fix bug in child-exit handling where the wrong pid was being matched. Matt Johnston <matt@ucc.asn.au> parents: 416 diff changeset	187 TRACE(("send_msg_chansess_exitsignal %d", chansess->exit.exitsignal))
b2b67cfcd66e - Fix bug in child-exit handling where the wrong pid was being matched. Matt Johnston <matt@ucc.asn.au> parents: 416 diff changeset	188
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	189 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	190
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	191 /* we check that we can match a signal name, otherwise
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	192 * don't send anything */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	193 for (i = 0; signames[i].name != NULL; i++) {
130 154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	194 if (signames[i].signal == chansess->exit.exitsignal) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	195 signame = signames[i].name;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	196 break;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	197 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	198 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	199
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	200 if (signame == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	201 return;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	202 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	203
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	204 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_REQUEST);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	205 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	206 buf_putstring(ses.writepayload, "exit-signal", 11);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	207 buf_putbyte(ses.writepayload, 0); /* boolean FALSE */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	208 buf_putstring(ses.writepayload, signame, strlen(signame));
130 154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	209 buf_putbyte(ses.writepayload, chansess->exit.exitcore);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	210 buf_putstring(ses.writepayload, "", 0); /* error msg */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	211 buf_putstring(ses.writepayload, "", 0); /* lang */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	212
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	213 encrypt_packet();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	214 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	215
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	216 /* set up a session channel */
6 ab00ef513e97 Sorted out the first channel init issues. Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	217 static int newchansess(struct Channel *channel) {
4 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 struct ChanSess *chansess;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	220
654 818108bf7749 - Fix use-after-free if multiple command requests were sent. Move Matt Johnston <matt@ucc.asn.au> parents: 609 diff changeset	221 TRACE(("new chansess %p", channel))
818108bf7749 - Fix use-after-free if multiple command requests were sent. Move Matt Johnston <matt@ucc.asn.au> parents: 609 diff changeset	222
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 208 diff changeset	223 dropbear_assert(channel->typedata == NULL);
4 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 chansess = (struct ChanSess*)m_malloc(sizeof(struct ChanSess));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	226 chansess->cmd = NULL;
569 6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	227 chansess->connection_string = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	228 chansess->pid = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	229
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	230 /* pty details */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	231 chansess->master = -1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	232 chansess->slave = -1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	233 chansess->tty = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	234 chansess->term = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	235
130 154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	236 chansess->exit.exitpid = -1;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	237
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	238 channel->typedata = chansess;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	239
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	240 #ifndef DISABLE_X11FWD
9 7f77962de998 - Reworked non-channel fd handling to listener.c Matt Johnston <matt@ucc.asn.au> parents: 7 diff changeset	241 chansess->x11listener = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	242 chansess->x11authprot = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	243 chansess->x11authcookie = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	244 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	245
668 405418f7dc5e Fixed compilation with unset ENABLE_{SVR,CLI}_AGENTFWD. Andrey Mazo <ahippo@yandex.ru> parents: 667 diff changeset	246 #ifdef ENABLE_SVR_AGENTFWD
9 7f77962de998 - Reworked non-channel fd handling to listener.c Matt Johnston <matt@ucc.asn.au> parents: 7 diff changeset	247 chansess->agentlistener = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	248 chansess->agentfile = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	249 chansess->agentdir = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	250 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	251
6 ab00ef513e97 Sorted out the first channel init issues. Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	252 return 0;
ab00ef513e97 Sorted out the first channel init issues. Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	253
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	254 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	255
568 005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 567 diff changeset	256 static struct logininfo*
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 567 diff changeset	257 chansess_login_alloc(struct ChanSess *chansess) {
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 567 diff changeset	258 struct logininfo * li;
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 567 diff changeset	259 li = login_alloc_entry(chansess->pid, ses.authstate.username,
572 8fd0ac8c8cab Move remotehost into svr_ses structure since we can't look it up Matt Johnston <matt@ucc.asn.au> parents: 569 diff changeset	260 svr_ses.remotehost, chansess->tty);
568 005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 567 diff changeset	261 return li;
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 567 diff changeset	262 }
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 567 diff changeset	263
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	264 /* clean a session channel */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	265 static void closechansess(struct Channel *channel) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	266
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	267 struct ChanSess *chansess;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	268 unsigned int i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	269 struct logininfo *li;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	270
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 402 diff changeset	271 TRACE(("enter closechansess"))
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 402 diff changeset	272
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	273 chansess = (struct ChanSess*)channel->typedata;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	274
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	275 if (chansess == NULL) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 133 diff changeset	276 TRACE(("leave closechansess: chansess == NULL"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	277 return;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	278 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	279
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 402 diff changeset	280 send_exitsignalstatus(channel);
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 402 diff changeset	281
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	282 m_free(chansess->cmd);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	283 m_free(chansess->term);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	284
654 818108bf7749 - Fix use-after-free if multiple command requests were sent. Move Matt Johnston <matt@ucc.asn.au> parents: 609 diff changeset	285 #ifdef ENABLE_SVR_PUBKEY_OPTIONS
818108bf7749 - Fix use-after-free if multiple command requests were sent. Move Matt Johnston <matt@ucc.asn.au> parents: 609 diff changeset	286 m_free(chansess->original_command);
818108bf7749 - Fix use-after-free if multiple command requests were sent. Move Matt Johnston <matt@ucc.asn.au> parents: 609 diff changeset	287 #endif
818108bf7749 - Fix use-after-free if multiple command requests were sent. Move Matt Johnston <matt@ucc.asn.au> parents: 609 diff changeset	288
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	289 if (chansess->tty) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	290 /* write the utmp/wtmp login record */
568 005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 567 diff changeset	291 li = chansess_login_alloc(chansess);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	292 login_logout(li);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	293 login_free_entry(li);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	294
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	295 pty_release(chansess->tty);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	296 m_free(chansess->tty);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	297 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	298
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	299 #ifndef DISABLE_X11FWD
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	300 x11cleanup(chansess);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	301 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	302
668 405418f7dc5e Fixed compilation with unset ENABLE_{SVR,CLI}_AGENTFWD. Andrey Mazo <ahippo@yandex.ru> parents: 667 diff changeset	303 #ifdef ENABLE_SVR_AGENTFWD
560 52d7301e46bd Agent forwarding works Matt Johnston <matt@ucc.asn.au> parents: 508 diff changeset	304 svr_agentcleanup(chansess);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	305 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	306
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	307 /* clear child pid entries */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	308 for (i = 0; i < svr_ses.childpidsize; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	309 if (svr_ses.childpids[i].chansess == chansess) {
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 208 diff changeset	310 dropbear_assert(svr_ses.childpids[i].pid > 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: 133 diff changeset	311 TRACE(("closing pid %d", svr_ses.childpids[i].pid))
423 b2b67cfcd66e - Fix bug in child-exit handling where the wrong pid was being matched. Matt Johnston <matt@ucc.asn.au> parents: 416 diff changeset	312 TRACE(("exitpid is %d", chansess->exit.exitpid))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	313 svr_ses.childpids[i].pid = -1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	314 svr_ses.childpids[i].chansess = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	315 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	316 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	317
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	318 m_free(chansess);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	319
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 133 diff changeset	320 TRACE(("leave closechansess"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	321 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	322
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	323 /* Handle requests for a channel. These can be execution requests,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	324 * or x11/authagent forwarding. These are passed to appropriate handlers */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	325 static void chansessionrequest(struct Channel *channel) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	326
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	327 unsigned char * type = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	328 unsigned int typelen;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	329 unsigned char wantreply;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	330 int ret = 1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	331 struct ChanSess *chansess;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	332
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 133 diff changeset	333 TRACE(("enter chansessionrequest"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	334
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	335 type = buf_getstring(ses.payload, &typelen);
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 171 diff changeset	336 wantreply = buf_getbool(ses.payload);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	337
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	338 if (typelen > MAX_NAME_LEN) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 133 diff changeset	339 TRACE(("leave chansessionrequest: type too long")) /* XXX send error?*/
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	340 goto out;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	341 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	342
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	343 chansess = (struct ChanSess*)channel->typedata;
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 208 diff changeset	344 dropbear_assert(chansess != NULL);
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 133 diff changeset	345 TRACE(("type is %s", type))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	346
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	347 if (strcmp(type, "window-change") == 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	348 ret = sessionwinchange(chansess);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	349 } else if (strcmp(type, "shell") == 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	350 ret = sessioncommand(channel, chansess, 0, 0);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	351 } else if (strcmp(type, "pty-req") == 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	352 ret = sessionpty(chansess);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	353 } else if (strcmp(type, "exec") == 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	354 ret = sessioncommand(channel, chansess, 1, 0);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	355 } else if (strcmp(type, "subsystem") == 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	356 ret = sessioncommand(channel, chansess, 1, 1);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	357 #ifndef DISABLE_X11FWD
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	358 } else if (strcmp(type, "x11-req") == 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	359 ret = x11req(chansess);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	360 #endif
668 405418f7dc5e Fixed compilation with unset ENABLE_{SVR,CLI}_AGENTFWD. Andrey Mazo <ahippo@yandex.ru> parents: 667 diff changeset	361 #ifdef ENABLE_SVR_AGENTFWD
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	362 } else if (strcmp(type, "[email protected]") == 0) {
560 52d7301e46bd Agent forwarding works Matt Johnston <matt@ucc.asn.au> parents: 508 diff changeset	363 ret = svr_agentreq(chansess);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	364 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	365 } else if (strcmp(type, "signal") == 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	366 ret = sessionsignal(chansess);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	367 } else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	368 /* etc, todo "env", "subsystem" */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	369 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	370
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	371 out:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	372
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	373 if (wantreply) {
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	374 if (ret == DROPBEAR_SUCCESS) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	375 send_msg_channel_success(channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	376 } else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	377 send_msg_channel_failure(channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	378 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	379 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	380
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	381 m_free(type);
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 133 diff changeset	382 TRACE(("leave chansessionrequest"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	383 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	384
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	385
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	386 /* Send a signal to a session's process as requested by the client*/
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	387 static int sessionsignal(struct ChanSess *chansess) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	388
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	389 int sig = 0;
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	390 unsigned char* signame = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	391 int i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	392
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	393 if (chansess->pid == 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	394 /* haven't got a process pid yet */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	395 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	396 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	397
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	398 signame = buf_getstring(ses.payload, NULL);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	399
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	400 i = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	401 while (signames[i].name != 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	402 if (strcmp(signames[i].name, signame) == 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	403 sig = signames[i].signal;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	404 break;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	405 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	406 i++;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	407 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	408
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	409 m_free(signame);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	410
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	411 if (sig == 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	412 /* failed */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	413 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	414 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	415
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	416 if (kill(chansess->pid, sig) < 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	417 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	418 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	419
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	420 return DROPBEAR_SUCCESS;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	421 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	422
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	423 /* Let the process know that the window size has changed, as notified from the
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	424 * client. Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	425 static int sessionwinchange(struct ChanSess *chansess) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	426
40 b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	427 int termc, termr, termw, termh;
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	428
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	429 if (chansess->master < 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	430 /* haven't got a pty yet */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	431 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	432 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	433
40 b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	434 termc = buf_getint(ses.payload);
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	435 termr = buf_getint(ses.payload);
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	436 termw = buf_getint(ses.payload);
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	437 termh = buf_getint(ses.payload);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	438
40 b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	439 pty_change_window_size(chansess->master, termr, termc, termw, termh);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	440
315 3eea61bd9993 send success message for successful window change request Matt Johnston <matt@ucc.asn.au> parents: 279 diff changeset	441 return DROPBEAR_SUCCESS;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	442 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	443
40 b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	444 static void get_termmodes(struct ChanSess *chansess) {
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	445
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	446 struct termios termio;
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	447 unsigned char opcode;
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	448 unsigned int value;
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	449 const struct TermCode * termcode;
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	450 unsigned int len;
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	451
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 133 diff changeset	452 TRACE(("enter get_termmodes"))
40 b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	453
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	454 /* Term modes */
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	455 /* We'll ignore errors and continue if we can't set modes.
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	456 * We're ignoring baud rates since they seem evil */
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	457 if (tcgetattr(chansess->master, &termio) == -1) {
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	458 return;
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	459 }
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	460
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	461 len = buf_getint(ses.payload);
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	462 TRACE(("term mode str %d p->l %d p->p %d",
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 40 diff changeset	463 len, ses.payload->len , ses.payload->pos));
40 b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	464 if (len != ses.payload->len - ses.payload->pos) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 581 diff changeset	465 dropbear_exit("Bad term mode string");
40 b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	466 }
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	467
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	468 if (len == 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: 133 diff changeset	469 TRACE(("leave get_termmodes: empty terminal modes string"))
171 8e68dbe8687b put back 'return;' on empty terminal mode strings which was erroneously Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	470 return;
40 b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	471 }
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	472
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	473 while (((opcode = buf_getbyte(ses.payload)) != 0x00) && opcode <= 159) {
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	474
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	475 /* must be before checking type, so that value is consumed even if
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	476 * we don't use it */
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	477 value = buf_getint(ses.payload);
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	478
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	479 /* handle types of code */
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	480 if (opcode > MAX_TERMCODE) {
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	481 continue;
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	482 }
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	483 termcode = &termcodes[(unsigned int)opcode];
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	484
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	485
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	486 switch (termcode->type) {
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	487
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	488 case TERMCODE_NONE:
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	489 break;
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	490
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	491 case TERMCODE_CONTROLCHAR:
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	492 termio.c_cc[termcode->mapcode] = value;
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	493 break;
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	494
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	495 case TERMCODE_INPUT:
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	496 if (value) {
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	497 termio.c_iflag \|= termcode->mapcode;
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	498 } else {
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	499 termio.c_iflag &= ~(termcode->mapcode);
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	500 }
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	501 break;
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	502
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	503 case TERMCODE_OUTPUT:
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	504 if (value) {
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	505 termio.c_oflag \|= termcode->mapcode;
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	506 } else {
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	507 termio.c_oflag &= ~(termcode->mapcode);
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	508 }
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	509 break;
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	510
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	511 case TERMCODE_LOCAL:
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	512 if (value) {
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	513 termio.c_lflag \|= termcode->mapcode;
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	514 } else {
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	515 termio.c_lflag &= ~(termcode->mapcode);
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	516 }
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	517 break;
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	518
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	519 case TERMCODE_CONTROL:
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	520 if (value) {
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	521 termio.c_cflag \|= termcode->mapcode;
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	522 } else {
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	523 termio.c_cflag &= ~(termcode->mapcode);
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	524 }
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	525 break;
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	526
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	527 }
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	528 }
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	529 if (tcsetattr(chansess->master, TCSANOW, &termio) < 0) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 581 diff changeset	530 dropbear_log(LOG_INFO, "Error setting terminal attributes");
40 b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	531 }
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 133 diff changeset	532 TRACE(("leave get_termmodes"))
40 b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	533 }
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	534
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	535 /* Set up a session pty which will be used to execute the shell or program.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	536 * The pty is allocated now, and kept for when the shell/program executes.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	537 * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	538 static int sessionpty(struct ChanSess * chansess) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	539
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	540 unsigned int termlen;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	541 unsigned char namebuf[65];
464 4317be8b7cf9 Make a copy of passwd fields since getpwnam()'s retval isn't safe to keep Matt Johnston <matt@ucc.asn.au> parents: 427 diff changeset	542 struct passwd * pw = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	543
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 133 diff changeset	544 TRACE(("enter sessionpty"))
475 52a644e7b8e1 * Patch from Frédéric Moulins adding options to authorized_keys. Matt Johnston <matt@ucc.asn.au> parents: 466 diff changeset	545
52a644e7b8e1 * Patch from Frédéric Moulins adding options to authorized_keys. Matt Johnston <matt@ucc.asn.au> parents: 466 diff changeset	546 if (!svr_pubkey_allows_pty()) {
52a644e7b8e1 * Patch from Frédéric Moulins adding options to authorized_keys. Matt Johnston <matt@ucc.asn.au> parents: 466 diff changeset	547 TRACE(("leave sessionpty : pty forbidden by public key option"))
52a644e7b8e1 * Patch from Frédéric Moulins adding options to authorized_keys. Matt Johnston <matt@ucc.asn.au> parents: 466 diff changeset	548 return DROPBEAR_FAILURE;
52a644e7b8e1 * Patch from Frédéric Moulins adding options to authorized_keys. Matt Johnston <matt@ucc.asn.au> parents: 466 diff changeset	549 }
52a644e7b8e1 * Patch from Frédéric Moulins adding options to authorized_keys. Matt Johnston <matt@ucc.asn.au> parents: 466 diff changeset	550
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	551 chansess->term = buf_getstring(ses.payload, &termlen);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	552 if (termlen > MAX_TERM_LEN) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	553 /* TODO send disconnect ? */
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 133 diff changeset	554 TRACE(("leave sessionpty: term len too long"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	555 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	556 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	557
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	558 /* allocate the pty */
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 96 diff changeset	559 if (chansess->master != -1) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 581 diff changeset	560 dropbear_exit("Multiple pty requests");
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 96 diff changeset	561 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	562 if (pty_allocate(&chansess->master, &chansess->slave, namebuf, 64) == 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: 133 diff changeset	563 TRACE(("leave sessionpty: failed to allocate pty"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	564 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	565 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	566
11 f76c9389e9e0 Mostly done with the listener changeover Matt Johnston <matt@ucc.asn.au> parents: 9 diff changeset	567 chansess->tty = (char*)m_strdup(namebuf);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	568 if (!chansess->tty) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 581 diff changeset	569 dropbear_exit("Out of memory"); /* TODO disconnect */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	570 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	571
464 4317be8b7cf9 Make a copy of passwd fields since getpwnam()'s retval isn't safe to keep Matt Johnston <matt@ucc.asn.au> parents: 427 diff changeset	572 pw = getpwnam(ses.authstate.pw_name);
4317be8b7cf9 Make a copy of passwd fields since getpwnam()'s retval isn't safe to keep Matt Johnston <matt@ucc.asn.au> parents: 427 diff changeset	573 if (!pw)
4317be8b7cf9 Make a copy of passwd fields since getpwnam()'s retval isn't safe to keep Matt Johnston <matt@ucc.asn.au> parents: 427 diff changeset	574 dropbear_exit("getpwnam failed after succeeding previously");
4317be8b7cf9 Make a copy of passwd fields since getpwnam()'s retval isn't safe to keep Matt Johnston <matt@ucc.asn.au> parents: 427 diff changeset	575 pty_setowner(pw, chansess->tty);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	576
40 b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	577 /* Set up the rows/col counts */
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	578 sessionwinchange(chansess);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	579
40 b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	580 /* Read the terminal modes */
b4874d772210 - Added terminal mode handling etc for the client, and window change Matt Johnston <matt@ucc.asn.au> parents: 33 diff changeset	581 get_termmodes(chansess);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	582
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 133 diff changeset	583 TRACE(("leave sessionpty"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	584 return DROPBEAR_SUCCESS;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	585 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	586
569 6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	587 static char* make_connection_string() {
6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	588 char local_ip, local_port, remote_ip, remote_port;
6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	589 size_t len;
6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	590 char *ret;
6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	591 get_socket_address(ses.sock_in, &local_ip, &local_port, &remote_ip, &remote_port, 0);
6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	592 len = strlen(local_ip) + strlen(local_port) + strlen(remote_ip) + strlen(remote_port) + 4;
6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	593 ret = m_malloc(len);
6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	594 snprintf(ret, len, "%s %s %s %s", remote_ip, remote_port, local_ip, local_port);
6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	595 m_free(local_ip);
6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	596 m_free(local_port);
6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	597 m_free(remote_ip);
6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	598 m_free(remote_port);
6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	599 return ret;
6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	600 }
6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	601
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	602 /* Handle a command request from the client. This is used for both shell
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	603 * and command-execution requests, and passes the command to
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	604 * noptycommand or ptycommand as appropriate.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	605 * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	606 static int sessioncommand(struct Channel channel, struct ChanSess chansess,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	607 int iscmd, int issubsys) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	608
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	609 unsigned int cmdlen;
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	610 int ret;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	611
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 133 diff changeset	612 TRACE(("enter sessioncommand"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	613
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	614 if (chansess->cmd != NULL) {
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	615 /* Note that only one command can _succeed_. The client might try
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	616 * one command (which fails), then try another. Ie fallback
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	617 * from sftp to scp */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	618 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	619 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	620
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	621 if (iscmd) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	622 /* "exec" */
475 52a644e7b8e1 * Patch from Frédéric Moulins adding options to authorized_keys. Matt Johnston <matt@ucc.asn.au> parents: 466 diff changeset	623 if (chansess->cmd == NULL) {
52a644e7b8e1 * Patch from Frédéric Moulins adding options to authorized_keys. Matt Johnston <matt@ucc.asn.au> parents: 466 diff changeset	624 chansess->cmd = buf_getstring(ses.payload, &cmdlen);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	625
475 52a644e7b8e1 * Patch from Frédéric Moulins adding options to authorized_keys. Matt Johnston <matt@ucc.asn.au> parents: 466 diff changeset	626 if (cmdlen > MAX_CMD_LEN) {
52a644e7b8e1 * Patch from Frédéric Moulins adding options to authorized_keys. Matt Johnston <matt@ucc.asn.au> parents: 466 diff changeset	627 m_free(chansess->cmd);
52a644e7b8e1 * Patch from Frédéric Moulins adding options to authorized_keys. Matt Johnston <matt@ucc.asn.au> parents: 466 diff changeset	628 /* TODO - send error - too long ? */
52a644e7b8e1 * Patch from Frédéric Moulins adding options to authorized_keys. Matt Johnston <matt@ucc.asn.au> parents: 466 diff changeset	629 return DROPBEAR_FAILURE;
52a644e7b8e1 * Patch from Frédéric Moulins adding options to authorized_keys. Matt Johnston <matt@ucc.asn.au> parents: 466 diff changeset	630 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	631 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	632 if (issubsys) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	633 #ifdef SFTPSERVER_PATH
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	634 if ((cmdlen == 4) && strncmp(chansess->cmd, "sftp", 4) == 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	635 m_free(chansess->cmd);
11 f76c9389e9e0 Mostly done with the listener changeover Matt Johnston <matt@ucc.asn.au> parents: 9 diff changeset	636 chansess->cmd = m_strdup(SFTPSERVER_PATH);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	637 } else
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	638 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	639 {
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	640 m_free(chansess->cmd);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	641 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	642 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	643 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	644 }
566 b321aeb57c64 - set $SSH_ORIGINAL_COMMAND if a command is forced, and log it Matt Johnston <matt@ucc.asn.au> parents: 560 diff changeset	645
b321aeb57c64 - set $SSH_ORIGINAL_COMMAND if a command is forced, and log it Matt Johnston <matt@ucc.asn.au> parents: 560 diff changeset	646 /* take public key option 'command' into account */
b321aeb57c64 - set $SSH_ORIGINAL_COMMAND if a command is forced, and log it Matt Johnston <matt@ucc.asn.au> parents: 560 diff changeset	647 svr_pubkey_set_forced_command(chansess);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	648
349 dba106bf6b34 Add (disabled by default) LOG_COMMANDS option to log the commands executed Matt Johnston <matt@ucc.asn.au> parents: 279 diff changeset	649 #ifdef LOG_COMMANDS
dba106bf6b34 Add (disabled by default) LOG_COMMANDS option to log the commands executed Matt Johnston <matt@ucc.asn.au> parents: 279 diff changeset	650 if (chansess->cmd) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 581 diff changeset	651 dropbear_log(LOG_INFO, "User %s executing '%s'",
464 4317be8b7cf9 Make a copy of passwd fields since getpwnam()'s retval isn't safe to keep Matt Johnston <matt@ucc.asn.au> parents: 427 diff changeset	652 ses.authstate.pw_name, chansess->cmd);
349 dba106bf6b34 Add (disabled by default) LOG_COMMANDS option to log the commands executed Matt Johnston <matt@ucc.asn.au> parents: 279 diff changeset	653 } else {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 581 diff changeset	654 dropbear_log(LOG_INFO, "User %s executing login shell",
464 4317be8b7cf9 Make a copy of passwd fields since getpwnam()'s retval isn't safe to keep Matt Johnston <matt@ucc.asn.au> parents: 427 diff changeset	655 ses.authstate.pw_name);
349 dba106bf6b34 Add (disabled by default) LOG_COMMANDS option to log the commands executed Matt Johnston <matt@ucc.asn.au> parents: 279 diff changeset	656 }
dba106bf6b34 Add (disabled by default) LOG_COMMANDS option to log the commands executed Matt Johnston <matt@ucc.asn.au> parents: 279 diff changeset	657 #endif
dba106bf6b34 Add (disabled by default) LOG_COMMANDS option to log the commands executed Matt Johnston <matt@ucc.asn.au> parents: 279 diff changeset	658
569 6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	659 /* uClinux will vfork(), so there'll be a race as
6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	660 connection_string is freed below. */
667 fc7ae88e63b3 Rename HAVE_FORK to USE_VFORK Matt Johnston <matt@ucc.asn.au> parents: 666 diff changeset	661 #ifndef USE_VFORK
569 6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	662 chansess->connection_string = make_connection_string();
6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	663 #endif
568 005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 567 diff changeset	664
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	665 if (chansess->term == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	666 /* no pty */
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	667 ret = noptycommand(channel, chansess);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	668 } else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	669 /* want pty */
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	670 ret = ptycommand(channel, chansess);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	671 }
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	672
667 fc7ae88e63b3 Rename HAVE_FORK to USE_VFORK Matt Johnston <matt@ucc.asn.au> parents: 666 diff changeset	673 #ifndef USE_VFORK
569 6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	674 m_free(chansess->connection_string);
6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	675 #endif
6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	676
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	677 if (ret == DROPBEAR_FAILURE) {
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	678 m_free(chansess->cmd);
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	679 }
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	680 return ret;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	681 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	682
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	683 /* Execute a command and set up redirection of stdin/stdout/stderr without a
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	684 * pty.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	685 * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	686 static int noptycommand(struct Channel channel, struct ChanSess chansess) {
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	687 int ret;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	688
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 133 diff changeset	689 TRACE(("enter noptycommand"))
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	690 ret = spawn_command(execchild, chansess,
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	691 &channel->writefd, &channel->readfd, &channel->errfd,
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	692 &chansess->pid);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	693
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	694 if (ret == DROPBEAR_FAILURE) {
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	695 return ret;
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	696 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	697
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	698 ses.maxfd = MAX(ses.maxfd, channel->writefd);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	699 ses.maxfd = MAX(ses.maxfd, channel->readfd);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	700 ses.maxfd = MAX(ses.maxfd, channel->errfd);
427 5df05d0a5366 Revert to default sigchld handler after forking, don't exit Matt Johnston <matt@ucc.asn.au> parents: 423 diff changeset	701
609 306a907d23e7 Avoid segfault when handling childpid race Matt Johnston <matt@ucc.asn.au> parents: 604 diff changeset	702 sleep(1);
306a907d23e7 Avoid segfault when handling childpid race Matt Johnston <matt@ucc.asn.au> parents: 604 diff changeset	703
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	704 addchildpid(chansess, chansess->pid);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	705
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	706 if (svr_ses.lastexit.exitpid != -1) {
502 43bbe17d6ba0 - Add Counter Mode support Matt Johnston <matt@ucc.asn.au> parents: 496 diff changeset	707 unsigned int i;
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	708 TRACE(("parent side: lastexitpid is %d", svr_ses.lastexit.exitpid))
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	709 /* The child probably exited and the signal handler triggered
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	710 * possibly before we got around to adding the childpid. So we fill
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	711 * out its data manually */
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	712 for (i = 0; i < svr_ses.childpidsize; i++) {
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	713 if (svr_ses.childpids[i].pid == svr_ses.lastexit.exitpid) {
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	714 TRACE(("found match for lastexitpid"))
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	715 svr_ses.childpids[i].chansess->exit = svr_ses.lastexit;
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	716 svr_ses.lastexit.exitpid = -1;
609 306a907d23e7 Avoid segfault when handling childpid race Matt Johnston <matt@ucc.asn.au> parents: 604 diff changeset	717 break;
130 154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	718 }
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez' Matt Johnston <matt@ucc.asn.au> parents: 115 diff changeset	719 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	720 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	721
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 133 diff changeset	722 TRACE(("leave noptycommand"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	723 return DROPBEAR_SUCCESS;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	724 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	725
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	726 /* Execute a command or shell within a pty environment, and set up
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	727 * redirection as appropriate.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	728 * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	729 static int ptycommand(struct Channel channel, struct ChanSess chansess) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	730
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	731 pid_t pid;
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	732 struct logininfo *li = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	733 #ifdef DO_MOTD
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	734 buffer * motdbuf = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	735 int len;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	736 struct stat sb;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	737 char *hushpath = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	738 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	739
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 133 diff changeset	740 TRACE(("enter ptycommand"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	741
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	742 /* we need to have a pty allocated */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	743 if (chansess->master == -1 \|\| chansess->tty == NULL) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 581 diff changeset	744 dropbear_log(LOG_WARNING, "No pty was allocated, couldn't execute");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	745 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	746 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	747
667 fc7ae88e63b3 Rename HAVE_FORK to USE_VFORK Matt Johnston <matt@ucc.asn.au> parents: 666 diff changeset	748 #ifdef USE_VFORK
273 02a80ce2ead4 Merge of the uClinux-dist patch, should work in inetd mode Matt Johnston <matt@ucc.asn.au> parents: 264 diff changeset	749 pid = vfork();
02a80ce2ead4 Merge of the uClinux-dist patch, should work in inetd mode Matt Johnston <matt@ucc.asn.au> parents: 264 diff changeset	750 #else
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	751 pid = fork();
273 02a80ce2ead4 Merge of the uClinux-dist patch, should work in inetd mode Matt Johnston <matt@ucc.asn.au> parents: 264 diff changeset	752 #endif
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	753 if (pid < 0)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	754 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	755
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	756 if (pid == 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	757 /* child */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	758
427 5df05d0a5366 Revert to default sigchld handler after forking, don't exit Matt Johnston <matt@ucc.asn.au> parents: 423 diff changeset	759 TRACE(("back to normal sigchld"))
5df05d0a5366 Revert to default sigchld handler after forking, don't exit Matt Johnston <matt@ucc.asn.au> parents: 423 diff changeset	760 /* Revert to normal sigchld handling */
5df05d0a5366 Revert to default sigchld handler after forking, don't exit Matt Johnston <matt@ucc.asn.au> parents: 423 diff changeset	761 if (signal(SIGCHLD, SIG_DFL) == SIG_ERR) {
5df05d0a5366 Revert to default sigchld handler after forking, don't exit Matt Johnston <matt@ucc.asn.au> parents: 423 diff changeset	762 dropbear_exit("signal() error");
5df05d0a5366 Revert to default sigchld handler after forking, don't exit Matt Johnston <matt@ucc.asn.au> parents: 423 diff changeset	763 }
5df05d0a5366 Revert to default sigchld handler after forking, don't exit Matt Johnston <matt@ucc.asn.au> parents: 423 diff changeset	764
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	765 /* redirect stdin/stdout/stderr */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	766 close(chansess->master);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	767
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	768 pty_make_controlling_tty(&chansess->slave, chansess->tty);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	769
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	770 if ((dup2(chansess->slave, STDIN_FILENO) < 0) \|\|
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	771 (dup2(chansess->slave, STDERR_FILENO) < 0) \|\|
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	772 (dup2(chansess->slave, STDOUT_FILENO) < 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: 133 diff changeset	773 TRACE(("leave ptycommand: error redirecting filedesc"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	774 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	775 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	776
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	777 close(chansess->slave);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	778
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	779 /* write the utmp/wtmp login record - must be after changing the
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	780 * terminal used for stdout with the dup2 above */
568 005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 567 diff changeset	781 li = chansess_login_alloc(chansess);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	782 login_login(li);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	783 login_free_entry(li);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	784
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	785 #ifdef DO_MOTD
24 469950e86d0f switching to global vars Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	786 if (svr_opts.domotd) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	787 /* don't show the motd if ~/.hushlogin exists */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	788
462 1009980436c2 Actually use ~/.hushlogin rather than ~/hushlogin to ignore motd. Matt Johnston <matt@ucc.asn.au> parents: 427 diff changeset	789 /* 12 == strlen("/.hushlogin\0") */
466 f11544d96354 fix up after merge Matt Johnston <matt@ucc.asn.au> parents: 465 diff changeset	790 len = strlen(ses.authstate.pw_dir) + 12;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	791
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	792 hushpath = m_malloc(len);
466 f11544d96354 fix up after merge Matt Johnston <matt@ucc.asn.au> parents: 465 diff changeset	793 snprintf(hushpath, len, "%s/.hushlogin", ses.authstate.pw_dir);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	794
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	795 if (stat(hushpath, &sb) < 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	796 /* more than a screenful is stupid IMHO */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	797 motdbuf = buf_new(80 * 25);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	798 if (buf_readfile(motdbuf, MOTD_FILENAME) == DROPBEAR_SUCCESS) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	799 buf_setpos(motdbuf, 0);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	800 while (motdbuf->pos != motdbuf->len) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	801 len = motdbuf->len - motdbuf->pos;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	802 len = write(STDOUT_FILENO,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	803 buf_getptr(motdbuf, len), len);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	804 buf_incrpos(motdbuf, len);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	805 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	806 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	807 buf_free(motdbuf);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	808 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	809 m_free(hushpath);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	810 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	811 #endif /* DO_MOTD */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	812
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	813 execchild(chansess);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	814 /* not reached */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	815
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	816 } else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	817 /* parent */
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 133 diff changeset	818 TRACE(("continue ptycommand: parent"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	819 chansess->pid = pid;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	820
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	821 /* add a child pid */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	822 addchildpid(chansess, pid);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	823
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	824 close(chansess->slave);
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	825 channel->writefd = chansess->master;
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	826 channel->readfd = chansess->master;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	827 /* don't need to set stderr here */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	828 ses.maxfd = MAX(ses.maxfd, chansess->master);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	829
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	830 setnonblocking(chansess->master);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	831
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	832 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	833
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 133 diff changeset	834 TRACE(("leave ptycommand"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	835 return DROPBEAR_SUCCESS;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	836 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	837
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	838 /* Add the pid of a child to the list for exit-handling */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	839 static void addchildpid(struct ChanSess *chansess, pid_t pid) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	840
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	841 unsigned int i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	842 for (i = 0; i < svr_ses.childpidsize; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	843 if (svr_ses.childpids[i].pid == -1) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	844 break;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	845 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	846 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	847
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	848 /* need to increase size */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	849 if (i == svr_ses.childpidsize) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	850 svr_ses.childpids = (struct ChildPid*)m_realloc(svr_ses.childpids,
264 541b14504870 * fix incorrect array sizing Matt Johnston <matt@ucc.asn.au> parents: 253 diff changeset	851 sizeof(struct ChildPid) * (svr_ses.childpidsize+1));
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	852 svr_ses.childpidsize++;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	853 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	854
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	855 svr_ses.childpids[i].pid = pid;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	856 svr_ses.childpids[i].chansess = chansess;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	857
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	858 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	859
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	860 /* Clean up, drop to user privileges, set up the environment and execute
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	861 * the command/shell. This function does not return. */
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	862 static void execchild(void *user_data) {
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 480 diff changeset	863 struct ChanSess *chansess = user_data;
482 7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	864 char *usershell = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	865
666 0ad95abf8d3c check for fork() and not __uClinux__ Mike Frysinger <vapier@gentoo.org> parents: 658 diff changeset	866 /* with uClinux we'll have vfork()ed, so don't want to overwrite the
0ad95abf8d3c check for fork() and not __uClinux__ Mike Frysinger <vapier@gentoo.org> parents: 658 diff changeset	867 * hostkey. can't think of a workaround to clear it */
667 fc7ae88e63b3 Rename HAVE_FORK to USE_VFORK Matt Johnston <matt@ucc.asn.au> parents: 666 diff changeset	868 #ifndef USE_VFORK
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	869 /* wipe the hostkey */
24 469950e86d0f switching to global vars Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	870 sign_key_free(svr_opts.hostkey);
469950e86d0f switching to global vars Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	871 svr_opts.hostkey = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	872
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	873 /* overwrite the prng state */
687 167fdc091c05 Improve RNG seeding. Matt Johnston <matt@ucc.asn.au> parents: 668 diff changeset	874 seedrandom();
273 02a80ce2ead4 Merge of the uClinux-dist patch, should work in inetd mode Matt Johnston <matt@ucc.asn.au> parents: 264 diff changeset	875 #endif
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	876
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	877 /* clear environment */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	878 /* if we're debugging using valgrind etc, we need to keep the LD_PRELOAD
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	879 * etc. This is hazardous, so should only be used for debugging. */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	880 #ifndef DEBUG_VALGRIND
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	881 #ifdef HAVE_CLEARENV
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	882 clearenv();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	883 #else /* don't HAVE_CLEARENV */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	884 /* Yay for posix. */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	885 if (environ) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	886 environ[0] = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	887 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	888 #endif /* HAVE_CLEARENV */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	889 #endif /* DEBUG_VALGRIND */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	890
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	891 /* We can only change uid/gid as root ... */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	892 if (getuid() == 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	893
464 4317be8b7cf9 Make a copy of passwd fields since getpwnam()'s retval isn't safe to keep Matt Johnston <matt@ucc.asn.au> parents: 427 diff changeset	894 if ((setgid(ses.authstate.pw_gid) < 0) \|\|
4317be8b7cf9 Make a copy of passwd fields since getpwnam()'s retval isn't safe to keep Matt Johnston <matt@ucc.asn.au> parents: 427 diff changeset	895 (initgroups(ses.authstate.pw_name,
4317be8b7cf9 Make a copy of passwd fields since getpwnam()'s retval isn't safe to keep Matt Johnston <matt@ucc.asn.au> parents: 427 diff changeset	896 ses.authstate.pw_gid) < 0)) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 581 diff changeset	897 dropbear_exit("Error changing user group");
204 675f7bf3c391 Seperate out exit errors from setgid()/initgroups(), and errors from setuid(), Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	898 }
464 4317be8b7cf9 Make a copy of passwd fields since getpwnam()'s retval isn't safe to keep Matt Johnston <matt@ucc.asn.au> parents: 427 diff changeset	899 if (setuid(ses.authstate.pw_uid) < 0) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 581 diff changeset	900 dropbear_exit("Error changing user");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	901 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	902 } else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	903 /* ... but if the daemon is the same uid as the requested uid, we don't
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	904 * need to */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	905
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	906 /* XXX - there is a minor issue here, in that if there are multiple
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	907 * usernames with the same uid, but differing groups, then the
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	908 * differing groups won't be set (as with initgroups()). The solution
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	909 * is for the sysadmin not to give out the UID twice */
464 4317be8b7cf9 Make a copy of passwd fields since getpwnam()'s retval isn't safe to keep Matt Johnston <matt@ucc.asn.au> parents: 427 diff changeset	910 if (getuid() != ses.authstate.pw_uid) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 581 diff changeset	911 dropbear_exit("Couldn't change user as non-root");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	912 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	913 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	914
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	915 /* set env vars */
464 4317be8b7cf9 Make a copy of passwd fields since getpwnam()'s retval isn't safe to keep Matt Johnston <matt@ucc.asn.au> parents: 427 diff changeset	916 addnewvar("USER", ses.authstate.pw_name);
4317be8b7cf9 Make a copy of passwd fields since getpwnam()'s retval isn't safe to keep Matt Johnston <matt@ucc.asn.au> parents: 427 diff changeset	917 addnewvar("LOGNAME", ses.authstate.pw_name);
4317be8b7cf9 Make a copy of passwd fields since getpwnam()'s retval isn't safe to keep Matt Johnston <matt@ucc.asn.au> parents: 427 diff changeset	918 addnewvar("HOME", ses.authstate.pw_dir);
482 7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	919 addnewvar("SHELL", get_user_shell());
508 d4bbc0039008 - Set a default path, since bash won't export one otherwise (though it will set Matt Johnston <matt@ucc.asn.au> parents: 502 diff changeset	920 addnewvar("PATH", DEFAULT_PATH);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	921 if (chansess->term != NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	922 addnewvar("TERM", chansess->term);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	923 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	924
567 893a9dd0b9dd - set $SSH_TTY environment variable Matt Johnston <matt@ucc.asn.au> parents: 566 diff changeset	925 if (chansess->tty) {
893a9dd0b9dd - set $SSH_TTY environment variable Matt Johnston <matt@ucc.asn.au> parents: 566 diff changeset	926 addnewvar("SSH_TTY", chansess->tty);
893a9dd0b9dd - set $SSH_TTY environment variable Matt Johnston <matt@ucc.asn.au> parents: 566 diff changeset	927 }
893a9dd0b9dd - set $SSH_TTY environment variable Matt Johnston <matt@ucc.asn.au> parents: 566 diff changeset	928
569 6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	929 if (chansess->connection_string) {
6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	930 addnewvar("SSH_CONNECTION", chansess->connection_string);
6f472dc54da7 - Set $SSH_CONNECTION Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	931 }
568 005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 567 diff changeset	932
566 b321aeb57c64 - set $SSH_ORIGINAL_COMMAND if a command is forced, and log it Matt Johnston <matt@ucc.asn.au> parents: 560 diff changeset	933 #ifdef ENABLE_SVR_PUBKEY_OPTIONS
654 818108bf7749 - Fix use-after-free if multiple command requests were sent. Move Matt Johnston <matt@ucc.asn.au> parents: 609 diff changeset	934 if (chansess->original_command) {
818108bf7749 - Fix use-after-free if multiple command requests were sent. Move Matt Johnston <matt@ucc.asn.au> parents: 609 diff changeset	935 addnewvar("SSH_ORIGINAL_COMMAND", chansess->original_command);
566 b321aeb57c64 - set $SSH_ORIGINAL_COMMAND if a command is forced, and log it Matt Johnston <matt@ucc.asn.au> parents: 560 diff changeset	936 }
b321aeb57c64 - set $SSH_ORIGINAL_COMMAND if a command is forced, and log it Matt Johnston <matt@ucc.asn.au> parents: 560 diff changeset	937 #endif
b321aeb57c64 - set $SSH_ORIGINAL_COMMAND if a command is forced, and log it Matt Johnston <matt@ucc.asn.au> parents: 560 diff changeset	938
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	939 /* change directory */
464 4317be8b7cf9 Make a copy of passwd fields since getpwnam()'s retval isn't safe to keep Matt Johnston <matt@ucc.asn.au> parents: 427 diff changeset	940 if (chdir(ses.authstate.pw_dir) < 0) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 581 diff changeset	941 dropbear_exit("Error changing directory");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	942 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	943
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	944 #ifndef DISABLE_X11FWD
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	945 /* set up X11 forwarding if enabled */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	946 x11setauth(chansess);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	947 #endif
668 405418f7dc5e Fixed compilation with unset ENABLE_{SVR,CLI}_AGENTFWD. Andrey Mazo <ahippo@yandex.ru> parents: 667 diff changeset	948 #ifdef ENABLE_SVR_AGENTFWD
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	949 /* set up agent env variable */
560 52d7301e46bd Agent forwarding works Matt Johnston <matt@ucc.asn.au> parents: 508 diff changeset	950 svr_agentset(chansess);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	951 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	952
482 7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	953 usershell = m_strdup(get_user_shell());
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	954 run_shell_command(chansess->cmd, ses.maxfd, usershell);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	955
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	956 /* only reached on error */
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 581 diff changeset	957 dropbear_exit("Child failed");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	958 }
9 7f77962de998 - Reworked non-channel fd handling to listener.c Matt Johnston <matt@ucc.asn.au> parents: 7 diff changeset	959
7 425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	960 const struct ChanType svrchansess = {
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	961 0, /* sepfds */
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	962 "session", /* name */
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	963 newchansess, /* inithandler */
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	964 sesscheckclose, /* checkclosehandler */
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	965 chansessionrequest, /* reqhandler */
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	966 closechansess, /* closehandler */
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	967 };
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	968
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	969
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	970 /* Set up the general chansession environment, in particular child-exit
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	971 * handling */
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	972 void svr_chansessinitialise() {
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	973
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	974 struct sigaction sa_chld;
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	975
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	976 /* single child process intially */
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	977 svr_ses.childpids = (struct ChildPid*)m_malloc(sizeof(struct ChildPid));
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	978 svr_ses.childpids[0].pid = -1; /* unused */
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	979 svr_ses.childpids[0].chansess = NULL;
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	980 svr_ses.childpidsize = 1;
133 b4cfe976c8e1 Initialise the "lastexit" variable so that we don't get session channels Matt Johnston <matt@ucc.asn.au> parents: 130 diff changeset	981 svr_ses.lastexit.exitpid = -1; /* Nothing has exited yet */
7 425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	982 sa_chld.sa_handler = sesssigchild_handler;
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	983 sa_chld.sa_flags = SA_NOCLDSTOP;
658 d4d0279710b9 - Initialise sa_mask properly Matt Johnston <matt@ucc.asn.au> parents: 657 diff changeset	984 sigemptyset(&sa_chld.sa_mask);
7 425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	985 if (sigaction(SIGCHLD, &sa_chld, NULL) < 0) {
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	986 dropbear_exit("signal() error");
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	987 }
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	988
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	989 }
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	990
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	991 /* add a new environment variable, allocating space for the entry */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	992 void addnewvar(const char* param, const char* var) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	993
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	994 char* newvar = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	995 int plen, vlen;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	996
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	997 plen = strlen(param);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	998 vlen = strlen(var);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	999
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1000 newvar = m_malloc(plen + vlen + 2); /* 2 is for '=' and '\0' */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1001 memcpy(newvar, param, plen);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1002 newvar[plen] = '=';
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1003 memcpy(&newvar[plen+1], var, vlen);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1004 newvar[plen+vlen+1] = '\0';
372 fbcc3b5b34f3 comment about putenv() leaking malloced variables Matt Johnston <matt@ucc.asn.au> parents: 369 diff changeset	1005 /* newvar is leaked here, but that's part of putenv()'s semantics */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1006 if (putenv(newvar) < 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1007 dropbear_exit("environ error");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1008 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1009 }

Mercurial > dropbear

annotate svr-chansession.c @ 711:f4232b65b316