dropbear: common-channel.c annotate

annotate common-channel.c @ 402:173a5f89666c channel-fix

propagate from branch 'au.asn.ucc.matt.dropbear' (head b1dd3b94e60a07a176dba2b035ac79968595990a) to branch 'au.asn.ucc.matt.dropbear.channel-fix' (head fc77c3dea87a7c0f374e738d055f0b455495cbc3)

author	Matt Johnston <matt@ucc.asn.au>
date	Sat, 03 Feb 2007 08:22:58 +0000
parents	a707e6148060 a7eb64b9966a
children	8b9aba1d5fa4

rev	line source
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1 /*
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	2 * Dropbear SSH
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	3 *
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	4 * Copyright (c) 2002-2004 Matt Johnston
4 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 /* Handle the multiplexed channels, such as sessions, x11, agent connections */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	26
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	27 #include "includes.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 "packet.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	30 #include "ssh.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	31 #include "buffer.h"
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	32 #include "circbuffer.h"
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	33 #include "dbutil.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	34 #include "channel.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	35 #include "ssh.h"
9 7f77962de998 - Reworked non-channel fd handling to listener.c Matt Johnston <matt@ucc.asn.au> parents: 7 diff changeset	36 #include "listener.h"
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	37
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	38 static void send_msg_channel_open_failure(unsigned int remotechan, int reason,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	39 const unsigned char text, const unsigned char lang);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	40 static void send_msg_channel_open_confirmation(struct Channel* channel,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	41 unsigned int recvwindow,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	42 unsigned int recvmaxpacket);
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	43 static void writechannel(struct Channel* channel, int fd, circbuffer *cbuf);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	44 static void send_msg_channel_window_adjust(struct Channel *channel,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	45 unsigned int incr);
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	46 static void send_msg_channel_data(struct Channel *channel, int isextended);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	47 static void send_msg_channel_eof(struct Channel *channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	48 static void send_msg_channel_close(struct Channel *channel);
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	49 static void remove_channel(struct Channel *channel);
78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	50 static void delete_channel(struct Channel *channel);
78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	51 static void check_in_progress(struct Channel *channel);
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	52 static unsigned int write_pending(struct Channel * channel);
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	53 static void check_close(struct Channel *channel);
78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	54 static void close_chan_fd(struct Channel *channel, int fd, int how);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	55
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	56 #define FD_UNINIT (-2)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	57 #define FD_CLOSED (-1)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	58
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	59 #define ERRFD_IS_READ(channel) ((channel)->extrabuf == NULL)
8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	60 #define ERRFD_IS_WRITE(channel) (!ERRFD_IS_READ(channel))
8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	61
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	62 /* Initialise all the channels */
6 ab00ef513e97 Sorted out the first channel init issues. Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	63 void chaninitialise(const struct ChanType *chantypes[]) {
4 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 /* may as well create space for a single channel */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	66 ses.channels = (struct Channel*)m_malloc(sizeof(struct Channel));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	67 ses.chansize = 1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	68 ses.channels[0] = NULL;
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	69 ses.chancount = 0;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	70
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	71 ses.chantypes = chantypes;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	72
9 7f77962de998 - Reworked non-channel fd handling to listener.c Matt Johnston <matt@ucc.asn.au> parents: 7 diff changeset	73 #ifdef USING_LISTENERS
7f77962de998 - Reworked non-channel fd handling to listener.c Matt Johnston <matt@ucc.asn.au> parents: 7 diff changeset	74 listeners_initialise();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	75 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	76
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	77 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	78
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	79 /* Clean up channels, freeing allocated memory */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	80 void chancleanup() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	81
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	82 unsigned int i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	83
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	84 TRACE(("enter chancleanup"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	85 for (i = 0; i < ses.chansize; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	86 if (ses.channels[i] != 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: 156 diff changeset	87 TRACE(("channel %d closing", i))
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	88 remove_channel(ses.channels[i]);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	89 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	90 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	91 m_free(ses.channels);
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	92 TRACE(("leave chancleanup"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	93 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	94
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	95 /* Create a new channel entry, send a reply confirm or failure */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	96 /* If remotechan, transwindow and transmaxpacket are not know (for a new
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	97 * outgoing connection, with them to be filled on confirmation), they should
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	98 * all be set to 0 */
7 425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	99 struct Channel* newchannel(unsigned int remotechan,
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	100 const struct ChanType *type,
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	101 unsigned int transwindow, unsigned int transmaxpacket) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	102
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	103 struct Channel * newchan;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	104 unsigned int i, j;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	105
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	106 TRACE(("enter newchannel"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	107
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	108 /* first see if we can use existing channels */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	109 for (i = 0; i < ses.chansize; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	110 if (ses.channels[i] == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	111 break;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	112 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	113 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	114
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	115 /* otherwise extend the list */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	116 if (i == ses.chansize) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	117 if (ses.chansize >= MAX_CHANNELS) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	118 TRACE(("leave newchannel: max chans reached"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	119 return NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	120 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	121
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	122 /* extend the channels */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	123 ses.channels = (struct Channel**)m_realloc(ses.channels,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	124 (ses.chansize+CHAN_EXTEND_SIZE)sizeof(struct Channel));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	125
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	126 ses.chansize += CHAN_EXTEND_SIZE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	127
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	128 /* set the new channels to null */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	129 for (j = i; j < ses.chansize; j++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	130 ses.channels[j] = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	131 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	132
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	133 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	134
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	135 newchan = (struct Channel*)m_malloc(sizeof(struct Channel));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	136 newchan->type = type;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	137 newchan->index = i;
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	138 newchan->sent_close = newchan->recv_close = 0;
78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	139 newchan->sent_eof = newchan->recv_eof = 0;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	140
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	141 newchan->remotechan = remotechan;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	142 newchan->transwindow = transwindow;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	143 newchan->transmaxpacket = transmaxpacket;
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 newchan->typedata = NULL;
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	146 newchan->writefd = FD_UNINIT;
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	147 newchan->readfd = FD_UNINIT;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	148 newchan->errfd = FD_CLOSED; /* this isn't always set to start with */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	149 newchan->initconn = 0;
243 0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	150 newchan->await_open = 0;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	151
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	152 newchan->writebuf = cbuf_new(RECV_MAXWINDOW);
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	153 newchan->extrabuf = NULL; /* The user code can set it up */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	154 newchan->recvwindow = RECV_MAXWINDOW;
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	155 newchan->recvdonelen = 0;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	156 newchan->recvmaxpacket = RECV_MAXPACKET;
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 ses.channels[i] = newchan;
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	159 ses.chancount++;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	160
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	161 TRACE(("leave newchannel"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	162
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	163 return newchan;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	164 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	165
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	166 /* Returns the channel structure corresponding to the channel in the current
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	167 * data packet (ses.payload must be positioned appropriately).
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	168 * A valid channel is always returns, it will fail fatally with an unknown
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	169 * channel */
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	170 static struct Channel* getchannel_msg(const char* kind) {
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	171
161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	172 unsigned int chan;
161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	173
161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	174 chan = buf_getint(ses.payload);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	175 if (chan >= ses.chansize \|\| ses.channels[chan] == NULL) {
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	176 if (kind) {
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	177 dropbear_exit("%s for unknown channel %d", kind, chan);
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	178 } else {
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	179 dropbear_exit("Unknown channel %d", chan);
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	180 }
4 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 return ses.channels[chan];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	183 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	184
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	185 struct Channel* getchannel() {
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	186 return getchannel_msg(NULL);
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	187 }
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	188
376 4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	189 /* In order to tell if a writefd is closed, we put it in the readfd FD_SET.
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	190 We then just try reading a single byte from it. It'll give EAGAIN or something
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	191 if the socket is still alive (but the FD probably shouldn't be set anyway?)*/
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	192 static void check_closed_writefd(struct Channel* channel, int fd) {
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	193 char c;
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	194 int ret;
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	195 TRACE(("enter check_closed_writefd fd %d", fd))
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	196 if (fd < 0) {
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	197 TRACE(("leave check_closed_writefd."))
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	198 return;
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	199 }
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	200
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	201 /* Read something. doing read(fd,x,0) seems to become a NOP on some platforms */
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	202 ret = read(fd, &c, 1);
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	203 TRACE(("ret %d errno %d", ret, errno))
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	204 if (ret > 0 \|\| (ret < 0 && (errno == EINTR \|\| errno == EAGAIN))) {
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	205 TRACE(("leave check_closed_writefd"))
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	206 return;
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	207 }
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	208 close_chan_fd(channel, fd, SHUT_WR);
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	209 TRACE(("leave check_closed_writefd after closing %d", fd))
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	210 }
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	211
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	212 /* Iterate through the channels, performing IO if available */
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	213 void channelio(fd_set readfds, fd_set writefds) {
4 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 struct Channel *channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	216 unsigned int i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	217
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	218 /* foreach channel */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	219 for (i = 0; i < ses.chansize; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	220
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	221 channel = ses.channels[i];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	222 if (channel == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	223 /* only process in-use channels */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	224 continue;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	225 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	226
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	227 /* read data and send it over the wire */
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	228 if (channel->readfd >= 0 && FD_ISSET(channel->readfd, readfds)) {
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	229 send_msg_channel_data(channel, 0);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	230 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	231
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	232 /* read stderr data and send it over the wire */
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	233 if (ERRFD_IS_READ(channel) &&
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	234 channel->errfd >= 0 && FD_ISSET(channel->errfd, readfds)) {
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	235 send_msg_channel_data(channel, 1);
395 dc37bd8563e8 disapproval of revision '5fdf69ca60d1683cdd9f4c2595134bed26394834' Matt Johnston <matt@ucc.asn.au> parents: 394 diff changeset	236 }
dc37bd8563e8 disapproval of revision '5fdf69ca60d1683cdd9f4c2595134bed26394834' Matt Johnston <matt@ucc.asn.au> parents: 394 diff changeset	237
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	238 /* write to program/pipe stdin */
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	239 if (channel->writefd >= 0 && FD_ISSET(channel->writefd, writefds)) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	240 if (channel->initconn) {
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	241 /* XXX should this go somewhere cleaner? */
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	242 check_in_progress(channel);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	243 continue; /* Important not to use the channel after
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	244 check_in_progress(), as it may be NULL */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	245 }
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	246 writechannel(channel, channel->writefd, channel->writebuf);
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	247 }
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	248
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	249 /* stderr for client mode */
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	250 if (ERRFD_IS_WRITE(channel)
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	251 && channel->errfd >= 0 && FD_ISSET(channel->errfd, writefds)) {
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	252 writechannel(channel, channel->errfd, channel->extrabuf);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	253 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	254
376 4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	255 /* Check writefds for close, even if we don't have anything
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	256 to write into them. */
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	257 if (channel->writefd >= 0) {
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	258 check_closed_writefd(channel, channel->writefd);
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	259 }
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	260 if (ERRFD_IS_WRITE(channel) && channel->errfd >= 0) {
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	261 check_closed_writefd(channel, channel->errfd);
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	262 }
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	263
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	264
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	265 /* handle any channel closing etc */
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	266 check_close(channel);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	267
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	268 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	269
9 7f77962de998 - Reworked non-channel fd handling to listener.c Matt Johnston <matt@ucc.asn.au> parents: 7 diff changeset	270 /* Listeners such as TCP, X11, agent-auth */
7f77962de998 - Reworked non-channel fd handling to listener.c Matt Johnston <matt@ucc.asn.au> parents: 7 diff changeset	271 #ifdef USING_LISTENERS
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	272 handle_listeners(readfds);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	273 #endif
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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	276
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	277 /* Returns true if there is data remaining to be written to stdin or
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	278 * stderr of a channel's endpoint. */
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	279 static unsigned int write_pending(struct Channel * channel) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	280
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	281 if (channel->writefd >= 0 && cbuf_getused(channel->writebuf) > 0) {
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	282 return 1;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	283 } else if (channel->errfd >= 0 && channel->extrabuf &&
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	284 cbuf_getused(channel->extrabuf) > 0) {
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	285 return 1;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	286 }
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	287 return 0;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	288 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	289
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	290
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	291 /* EOF/close handling */
78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	292 static void check_close(struct Channel *channel) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	293
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	294 TRACE(("check_close: writefd %d, readfd %d, errfd %d, sent_close %d, recv_close %d",
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	295 channel->writefd, channel->readfd,
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	296 channel->errfd, channel->sent_close, channel->recv_close))
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	297 TRACE(("writebuf size %d extrabuf size %d",
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	298 cbuf_getused(channel->writebuf),
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	299 channel->extrabuf ? cbuf_getused(channel->extrabuf) : 0))
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	300
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	301 if (channel->recv_close && !write_pending(channel)) {
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	302 if (! channel->sent_close) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	303 TRACE(("Sending MSG_CHANNEL_CLOSE in response to same."))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	304 send_msg_channel_close(channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	305 }
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	306 remove_channel(channel);
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	307 return;
397 2908122e9eed disapproval of revision '1250b8af44b62d8f4fe0f8d9fc7e7a1cc34e7e1c' Matt Johnston <matt@ucc.asn.au> parents: 396 diff changeset	308 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	309
364 90cb290836de Passes most test cases now Matt Johnston <matt@ucc.asn.au> parents: 363 diff changeset	310 if (channel->recv_eof && !write_pending(channel)) {
90cb290836de Passes most test cases now Matt Johnston <matt@ucc.asn.au> parents: 363 diff changeset	311 close_chan_fd(channel, channel->writefd, SHUT_WR);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	312 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	313
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	314 /* If we're not going to send any more data, send EOF */
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	315 if (!channel->sent_eof
365 49fcc9875045 Remove accidentally removed block (making sure to close the channel). Matt Johnston <matt@ucc.asn.au> parents: 364 diff changeset	316 && channel->readfd == FD_CLOSED
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	317 && (ERRFD_IS_WRITE(channel) \|\| channel->errfd == FD_CLOSED)) {
397 2908122e9eed disapproval of revision '1250b8af44b62d8f4fe0f8d9fc7e7a1cc34e7e1c' Matt Johnston <matt@ucc.asn.au> parents: 396 diff changeset	318 send_msg_channel_eof(channel);
2908122e9eed disapproval of revision '1250b8af44b62d8f4fe0f8d9fc7e7a1cc34e7e1c' Matt Johnston <matt@ucc.asn.au> parents: 396 diff changeset	319 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	320
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	321 /* And if we can't receive any more data from them either, close up */
365 49fcc9875045 Remove accidentally removed block (making sure to close the channel). Matt Johnston <matt@ucc.asn.au> parents: 364 diff changeset	322 if (!channel->sent_close
49fcc9875045 Remove accidentally removed block (making sure to close the channel). Matt Johnston <matt@ucc.asn.au> parents: 364 diff changeset	323 && channel->writefd == FD_CLOSED
49fcc9875045 Remove accidentally removed block (making sure to close the channel). Matt Johnston <matt@ucc.asn.au> parents: 364 diff changeset	324 && channel->readfd == FD_CLOSED
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	325 && channel->errfd == FD_CLOSED) {
397 2908122e9eed disapproval of revision '1250b8af44b62d8f4fe0f8d9fc7e7a1cc34e7e1c' Matt Johnston <matt@ucc.asn.au> parents: 396 diff changeset	326 send_msg_channel_close(channel);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	327 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	328
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	329 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	330
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	331
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	332 /* Check whether a deferred (EINPROGRESS) connect() was successful, and
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	333 * if so, set up the channel properly. Otherwise, the channel is cleaned up, so
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	334 * it is important that the channel reference isn't used after a call to this
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	335 * function */
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	336 static void check_in_progress(struct Channel *channel) {
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 int val;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	339 socklen_t vallen = sizeof(val);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	340
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	341 TRACE(("enter check_in_progress"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	342
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	343 if (getsockopt(channel->writefd, SOL_SOCKET, SO_ERROR, &val, &vallen)
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	344 \|\| val != 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	345 send_msg_channel_open_failure(channel->remotechan,
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	346 SSH_OPEN_CONNECT_FAILED, "", "");
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	347 close(channel->writefd);
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	348 delete_channel(channel);
78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	349 TRACE(("leave check_in_progress: fail"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	350 } else {
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	351 send_msg_channel_open_confirmation(channel, channel->recvwindow,
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	352 channel->recvmaxpacket);
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	353 channel->readfd = channel->writefd;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	354 channel->initconn = 0;
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	355 TRACE(("leave check_in_progress: success"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	356 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	357 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	358
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	359
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	360 /* Send the close message and set the channel as closed */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	361 static void send_msg_channel_close(struct Channel *channel) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	362
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	363 TRACE(("enter send_msg_channel_close"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	364 if (channel->type->closehandler) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	365 channel->type->closehandler(channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	366 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	367
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	368 CHECKCLEARTOWRITE();
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 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_CLOSE);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	371 buf_putint(ses.writepayload, channel->remotechan);
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 encrypt_packet();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	374
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	375 channel->sent_eof = 1;
78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	376 channel->sent_close = 1;
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	377 TRACE(("leave send_msg_channel_close"))
4 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 /* call this when trans/eof channels are closed */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	381 static void send_msg_channel_eof(struct Channel *channel) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	382
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	383 TRACE(("enter send_msg_channel_eof"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	384 CHECKCLEARTOWRITE();
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 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_EOF);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	387 buf_putint(ses.writepayload, channel->remotechan);
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 encrypt_packet();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	390
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	391 channel->sent_eof = 1;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	392
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	393 TRACE(("leave send_msg_channel_eof"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	394 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	395
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	396 /* Called to write data out to the local side of the channel.
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	397 * Only called when we know we can write to a channel, writes as much as
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	398 * possible */
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	399 static void writechannel(struct Channel* channel, int fd, circbuffer *cbuf) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	400
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	401 int len, maxlen;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	402
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	403 TRACE(("enter writechannel fd %d", fd))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	404
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	405 maxlen = cbuf_readlen(cbuf);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	406
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	407 /* Write the data out */
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	408 len = write(fd, cbuf_readptr(cbuf, maxlen), maxlen);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	409 if (len <= 0) {
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	410 TRACE(("errno %d len %d", errno, len))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	411 if (len < 0 && errno != EINTR) {
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	412 close_chan_fd(channel, fd, SHUT_WR);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	413 }
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	414 TRACE(("leave writechannel: len <= 0"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	415 return;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	416 }
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	417 TRACE(("writechannel wrote %d", len))
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	418
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	419 cbuf_incrread(cbuf, len);
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	420 channel->recvdonelen += len;
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	421
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	422 /* Window adjust handling */
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	423 if (channel->recvdonelen >= RECV_WINDOWEXTEND) {
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	424 /* Set it back to max window */
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	425 send_msg_channel_window_adjust(channel, channel->recvdonelen);
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	426 channel->recvwindow += channel->recvdonelen;
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	427 channel->recvdonelen = 0;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	428 }
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	429
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 221 diff changeset	430 dropbear_assert(channel->recvwindow <= RECV_MAXWINDOW);
c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 221 diff changeset	431 dropbear_assert(channel->recvwindow <= cbuf_getavail(channel->writebuf));
c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 221 diff changeset	432 dropbear_assert(channel->extrabuf == NULL \|\|
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	433 channel->recvwindow <= cbuf_getavail(channel->extrabuf));
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	434
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	435 TRACE(("leave writechannel"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	436 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	437
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	438 /* Set the file descriptors for the main select in session.c
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	439 * This avoid channels which don't have any window available, are closed, etc*/
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	440 void setchannelfds(fd_set readfds, fd_set writefds) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	441
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	442 unsigned int i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	443 struct Channel * channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	444
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	445 for (i = 0; i < ses.chansize; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	446
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	447 channel = ses.channels[i];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	448 if (channel == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	449 continue;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	450 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	451
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	452 /* Stuff to put over the wire */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	453 if (channel->transwindow > 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	454
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	455 if (channel->readfd >= 0) {
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	456 FD_SET(channel->readfd, readfds);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	457 }
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	458
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	459 if (ERRFD_IS_READ(channel) && channel->errfd >= 0) {
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	460 FD_SET(channel->errfd, readfds);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	461 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	462 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	463
397 2908122e9eed disapproval of revision '1250b8af44b62d8f4fe0f8d9fc7e7a1cc34e7e1c' Matt Johnston <matt@ucc.asn.au> parents: 396 diff changeset	464 /* Stuff from the wire */
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	465 if ((channel->writefd >= 0 && cbuf_getused(channel->writebuf) > 0 )
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	466 \|\| channel->initconn) {
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	467 FD_SET(channel->writefd, writefds);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	468 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	469
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	470 if (ERRFD_IS_WRITE(channel) != NULL && channel->errfd >= 0
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	471 && cbuf_getused(channel->extrabuf) > 0 ) {
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	472 FD_SET(channel->errfd, writefds);
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	473 }
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	474
376 4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	475 /* We also set the writefds for reading, so that we will be notified of close */
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	476 if (channel->writefd >= 0) {
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	477 FD_SET(channel->writefd, readfds);
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	478 }
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	479 if (ERRFD_IS_WRITE(channel) && channel->errfd >= 0) {
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	480 FD_SET(channel->errfd, readfds);
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	481 }
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	482
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	483
4f2dbd1c3685 Add some code for testing whether a writefd is closed (by read()ing from it) Matt Johnston <matt@ucc.asn.au> parents: 375 diff changeset	484
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	485 } /* foreach channel */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	486
9 7f77962de998 - Reworked non-channel fd handling to listener.c Matt Johnston <matt@ucc.asn.au> parents: 7 diff changeset	487 #ifdef USING_LISTENERS
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	488 set_listener_fds(readfds);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	489 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	490
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	491 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	492
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	493 /* handle the channel EOF event, by closing the channel filedescriptor. The
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	494 * channel isn't closed yet, it is left until the incoming (from the program
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	495 * etc) FD is also EOF */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	496 void recv_msg_channel_eof() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	497
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	498 struct Channel * channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	499
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	500 TRACE(("enter recv_msg_channel_eof"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	501
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	502 channel = getchannel_msg("EOF");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	503
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	504 channel->recv_eof = 1;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	505
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	506 check_close(channel);
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	507 TRACE(("leave recv_msg_channel_eof"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	508 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	509
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	510
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	511 /* Handle channel closure(), respond in kind and close the channels */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	512 void recv_msg_channel_close() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	513
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	514 struct Channel * channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	515
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	516 TRACE(("enter recv_msg_channel_close"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	517
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	518 channel = getchannel_msg("Close");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	519
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	520 channel->recv_eof = 1;
78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	521 channel->recv_close = 1;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	522
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	523 check_close(channel);
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	524 TRACE(("leave recv_msg_channel_close"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	525 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	526
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	527 /* Remove a channel entry, this is only executed after both sides have sent
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	528 * channel close */
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	529 static void remove_channel(struct Channel * channel) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	530
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	531 TRACE(("enter remove_channel"))
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	532 TRACE(("channel index is %d", channel->index))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	533
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	534 cbuf_free(channel->writebuf);
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	535 channel->writebuf = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	536
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	537 if (channel->extrabuf) {
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	538 cbuf_free(channel->extrabuf);
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	539 channel->extrabuf = NULL;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	540 }
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	541
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	542
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	543 /* close the FDs in case they haven't been done
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	544 * yet (they might have been shutdown etc) */
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	545 TRACE(("CLOSE writefd %d", channel->writefd))
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	546 close(channel->writefd);
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	547 TRACE(("CLOSE readfd %d", channel->readfd))
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	548 close(channel->readfd);
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	549 TRACE(("CLOSE errfd %d", channel->errfd))
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	550 close(channel->errfd);
2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	551
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	552 channel->typedata = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	553
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	554 delete_channel(channel);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	555
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	556 TRACE(("leave remove_channel"))
4 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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	559 /* Remove a channel entry */
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	560 static void delete_channel(struct Channel *channel) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	561
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	562 ses.channels[channel->index] = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	563 m_free(channel);
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	564 ses.chancount--;
4 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 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	567
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	568
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	569 /* Handle channel specific requests, passing off to corresponding handlers
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	570 * such as chansession or x11fwd */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	571 void recv_msg_channel_request() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	572
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	573 struct Channel *channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	574
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	575 TRACE(("enter recv_msg_channel_request"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	576
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	577 channel = getchannel();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	578
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	579 if (channel->type->reqhandler) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	580 channel->type->reqhandler(channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	581 } else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	582 send_msg_channel_failure(channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	583 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	584
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	585 TRACE(("leave recv_msg_channel_request"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	586
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	587 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	588
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	589 /* Reads data from the server's program/shell/etc, and puts it in a
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	590 * channel_data packet to send.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	591 * chan is the remote channel, isextended is 0 if it is normal data, 1
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	592 * if it is extended data. if it is extended, then the type is in
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	593 * exttype */
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	594 static void send_msg_channel_data(struct Channel *channel, int isextended) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	595
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	596 int len;
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	597 size_t maxlen, size_pos;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	598 int fd;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	599
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	600 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	601
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	602 dropbear_assert(!channel->sent_close);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	603
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	604 if (isextended) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	605 fd = channel->errfd;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	606 } else {
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	607 fd = channel->readfd;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	608 }
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	609 TRACE(("enter send_msg_channel_data isextended %d fd %d", isextended, fd))
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 221 diff changeset	610 dropbear_assert(fd >= 0);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	611
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	612 maxlen = MIN(channel->transwindow, channel->transmaxpacket);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	613 /* -(1+4+4) is SSH_MSG_CHANNEL_DATA, channel number, string length, and
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	614 * exttype if is extended */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	615 maxlen = MIN(maxlen,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	616 ses.writepayload->size - 1 - 4 - 4 - (isextended ? 4 : 0));
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	617 TRACE(("maxlen %d", maxlen))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	618 if (maxlen == 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: 156 diff changeset	619 TRACE(("leave send_msg_channel_data: no window"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	620 return;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	621 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	622
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	623 buf_putbyte(ses.writepayload,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	624 isextended ? SSH_MSG_CHANNEL_EXTENDED_DATA : SSH_MSG_CHANNEL_DATA);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	625 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	626 if (isextended) {
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	627 buf_putint(ses.writepayload, SSH_EXTENDED_DATA_STDERR);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	628 }
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	629 /* a dummy size first ...*/
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	630 size_pos = ses.writepayload->pos;
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	631 buf_putint(ses.writepayload, 0);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	632
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	633 /* read the data */
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	634 len = read(fd, buf_getwriteptr(ses.writepayload, maxlen), maxlen);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	635 if (len <= 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	636 if (len == 0 \|\| errno != EINTR) {
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	637 close_chan_fd(channel, fd, SHUT_RD);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	638 }
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	639 ses.writepayload->len = ses.writepayload->pos = 0;
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	640 TRACE(("leave send_msg_channel_data: len %d read err or EOF for fd %d",
8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	641 len, channel->index));
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	642 return;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	643 }
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	644 buf_incrwritepos(ses.writepayload, len);
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	645 /* ... real size here */
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	646 buf_setpos(ses.writepayload, size_pos);
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	647 buf_putint(ses.writepayload, len);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	648
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	649 channel->transwindow -= len;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	650
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	651 encrypt_packet();
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	652 TRACE(("leave send_msg_channel_data"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	653 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	654
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	655 /* We receive channel data */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	656 void recv_msg_channel_data() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	657
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	658 struct Channel *channel;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	659
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	660 channel = getchannel();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	661
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	662 common_recv_msg_channel_data(channel, channel->writefd, channel->writebuf);
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	663 }
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	664
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	665 /* Shared for data and stderr data - when we receive data, put it in a buffer
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	666 * for writing to the local file descriptor */
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	667 void common_recv_msg_channel_data(struct Channel *channel, int fd,
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	668 circbuffer * cbuf) {
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	669
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	670 unsigned int datalen;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	671 unsigned int maxdata;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	672 unsigned int buflen;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	673 unsigned int len;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	674
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	675 TRACE(("enter recv_msg_channel_data"))
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	676
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	677 if (channel->recv_eof) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	678 dropbear_exit("received data after eof");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	679 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	680
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	681 if (fd < 0) {
365 49fcc9875045 Remove accidentally removed block (making sure to close the channel). Matt Johnston <matt@ucc.asn.au> parents: 364 diff changeset	682 /* If we have encountered failed write, the far side might still
49fcc9875045 Remove accidentally removed block (making sure to close the channel). Matt Johnston <matt@ucc.asn.au> parents: 364 diff changeset	683 * be sending data without having yet received our close notification.
49fcc9875045 Remove accidentally removed block (making sure to close the channel). Matt Johnston <matt@ucc.asn.au> parents: 364 diff changeset	684 * We just drop the data. */
49fcc9875045 Remove accidentally removed block (making sure to close the channel). Matt Johnston <matt@ucc.asn.au> parents: 364 diff changeset	685 return;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	686 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	687
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	688 datalen = buf_getint(ses.payload);
365 49fcc9875045 Remove accidentally removed block (making sure to close the channel). Matt Johnston <matt@ucc.asn.au> parents: 364 diff changeset	689 TRACE(("length %d", datalen))
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	690
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	691 maxdata = cbuf_getavail(cbuf);
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	692
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	693 /* Whilst the spec says we "MAY ignore data past the end" this could
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	694 * lead to corrupted file transfers etc (chunks missed etc). It's better to
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	695 * just die horribly */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	696 if (datalen > maxdata) {
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	697 dropbear_exit("Oversized packet");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	698 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	699
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	700 /* We may have to run throught twice, if the buffer wraps around. Can't
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	701 * just "leave it for next time" like with writechannel, since this
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	702 * is payload data */
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	703 len = datalen;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	704 while (len > 0) {
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	705 buflen = cbuf_writelen(cbuf);
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	706 buflen = MIN(buflen, len);
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	707
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	708 memcpy(cbuf_writeptr(cbuf, buflen),
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	709 buf_getptr(ses.payload, buflen), buflen);
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	710 cbuf_incrwrite(cbuf, buflen);
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	711 buf_incrpos(ses.payload, buflen);
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	712 len -= buflen;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	713 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	714
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 221 diff changeset	715 dropbear_assert(channel->recvwindow >= datalen);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	716 channel->recvwindow -= datalen;
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 221 diff changeset	717 dropbear_assert(channel->recvwindow <= RECV_MAXWINDOW);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	718
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	719 TRACE(("leave recv_msg_channel_data"))
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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	722 /* Increment the outgoing data window for a channel - the remote end limits
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	723 * the amount of data which may be transmitted, this window is decremented
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	724 * as data is sent, and incremented upon receiving window-adjust messages */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	725 void recv_msg_channel_window_adjust() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	726
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	727 struct Channel * channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	728 unsigned int incr;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	729
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	730 channel = getchannel();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	731
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	732 incr = buf_getint(ses.payload);
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	733 TRACE(("received window increment %d", incr))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	734 incr = MIN(incr, MAX_TRANS_WIN_INCR);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	735
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	736 channel->transwindow += incr;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	737 channel->transwindow = MIN(channel->transwindow, MAX_TRANS_WINDOW);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	738
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	739 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	740
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	741 /* Increment the incoming data window for a channel, and let the remote
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	742 * end know */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	743 static void send_msg_channel_window_adjust(struct Channel* channel,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	744 unsigned int incr) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	745
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	746 TRACE(("sending window adjust %d", incr))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	747 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	748
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	749 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_WINDOW_ADJUST);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	750 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	751 buf_putint(ses.writepayload, incr);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	752
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	753 encrypt_packet();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	754 }
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 /* Handle a new channel request, performing any channel-type-specific setup */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	757 void recv_msg_channel_open() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	758
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	759 unsigned char *type;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	760 unsigned int typelen;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	761 unsigned int remotechan, transwindow, transmaxpacket;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	762 struct Channel *channel;
7 425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	763 const struct ChanType **cp;
6 ab00ef513e97 Sorted out the first channel init issues. Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	764 const struct ChanType *chantype;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	765 unsigned int errtype = SSH_OPEN_UNKNOWN_CHANNEL_TYPE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	766 int ret;
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
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	769 TRACE(("enter recv_msg_channel_open"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	770
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	771 /* get the packet contents */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	772 type = buf_getstring(ses.payload, &typelen);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	773
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	774 remotechan = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	775 transwindow = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	776 transwindow = MIN(transwindow, MAX_TRANS_WINDOW);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	777 transmaxpacket = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	778 transmaxpacket = MIN(transmaxpacket, MAX_TRANS_PAYLOAD_LEN);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	779
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	780 /* figure what type of packet it is */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	781 if (typelen > MAX_NAME_LEN) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	782 goto failure;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	783 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	784
7 425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	785 /* Get the channel type. Client and server style invokation will set up a
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	786 * different list for ses.chantypes at startup. We just iterate through
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	787 * this list and find the matching name */
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	788 for (cp = &ses.chantypes[0], chantype = (*cp);
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	789 chantype != NULL;
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	790 cp++, chantype = (*cp)) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	791 if (strcmp(type, chantype->name) == 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	792 break;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	793 }
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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	796 if (chantype == 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: 156 diff changeset	797 TRACE(("No matching type for '%s'", type))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	798 goto failure;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	799 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	800
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	801 TRACE(("matched type '%s'", type))
7 425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	802
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	803 /* create the channel */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	804 channel = newchannel(remotechan, chantype, transwindow, transmaxpacket);
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 if (channel == 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: 156 diff changeset	807 TRACE(("newchannel returned NULL"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	808 goto failure;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	809 }
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 if (channel->type->inithandler) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	812 ret = channel->type->inithandler(channel);
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	813 if (ret == SSH_OPEN_IN_PROGRESS) {
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	814 /* We'll send the confirmation later */
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	815 goto cleanup;
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	816 }
6 ab00ef513e97 Sorted out the first channel init issues. Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	817 if (ret > 0) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	818 errtype = ret;
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	819 delete_channel(channel);
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	820 TRACE(("inithandler returned failure %d", ret))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	821 goto failure;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	822 }
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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	825 /* success */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	826 send_msg_channel_open_confirmation(channel, channel->recvwindow,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	827 channel->recvmaxpacket);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	828 goto cleanup;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	829
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	830 failure:
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	831 TRACE(("recv_msg_channel_open failure"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	832 send_msg_channel_open_failure(remotechan, errtype, "", "");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	833
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	834 cleanup:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	835 m_free(type);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	836
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	837 TRACE(("leave recv_msg_channel_open"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	838 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	839
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	840 /* Send a failure message */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	841 void send_msg_channel_failure(struct Channel *channel) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	842
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	843 TRACE(("enter send_msg_channel_failure"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	844 CHECKCLEARTOWRITE();
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 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_FAILURE);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	847 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	848
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	849 encrypt_packet();
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	850 TRACE(("leave send_msg_channel_failure"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	851 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	852
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	853 /* Send a success message */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	854 void send_msg_channel_success(struct Channel *channel) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	855
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	856 TRACE(("enter send_msg_channel_success"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	857 CHECKCLEARTOWRITE();
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 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_SUCCESS);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	860 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	861
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	862 encrypt_packet();
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	863 TRACE(("leave send_msg_channel_success"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	864 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	865
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	866 /* Send a channel open failure message, with a corresponding reason
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	867 * code (usually resource shortage or unknown chan type) */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	868 static void send_msg_channel_open_failure(unsigned int remotechan,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	869 int reason, const unsigned char text, const unsigned char lang) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	870
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	871 TRACE(("enter send_msg_channel_open_failure"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	872 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	873
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	874 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_OPEN_FAILURE);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	875 buf_putint(ses.writepayload, remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	876 buf_putint(ses.writepayload, reason);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	877 buf_putstring(ses.writepayload, text, strlen((char*)text));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	878 buf_putstring(ses.writepayload, lang, strlen((char*)lang));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	879
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	880 encrypt_packet();
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	881 TRACE(("leave send_msg_channel_open_failure"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	882 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	883
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	884 /* Confirm a channel open, and let the remote end know what number we've
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	885 * allocated and the receive parameters */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	886 static void send_msg_channel_open_confirmation(struct Channel* channel,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	887 unsigned int recvwindow,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	888 unsigned int recvmaxpacket) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	889
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	890 TRACE(("enter send_msg_channel_open_confirmation"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	891 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	892
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	893 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_OPEN_CONFIRMATION);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	894 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	895 buf_putint(ses.writepayload, channel->index);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	896 buf_putint(ses.writepayload, recvwindow);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	897 buf_putint(ses.writepayload, recvmaxpacket);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	898
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	899 encrypt_packet();
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	900 TRACE(("leave send_msg_channel_open_confirmation"))
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
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	903 /* close a fd, how is SHUT_RD or SHUT_WR */
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	904 static void close_chan_fd(struct Channel *channel, int fd, int how) {
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	905
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	906 int closein = 0, closeout = 0;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	907
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	908 if (channel->type->sepfds) {
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	909 TRACE(("SHUTDOWN(%d, %d)", fd, how))
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	910 shutdown(fd, how);
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	911 if (how == 0) {
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	912 closeout = 1;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	913 } else {
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	914 closein = 1;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	915 }
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	916 } else {
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	917 TRACE(("CLOSE some fd %d", fd))
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	918 close(fd);
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	919 closein = closeout = 1;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	920 }
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	921
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	922 if (closeout && (fd == channel->readfd)) {
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	923 channel->readfd = FD_CLOSED;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	924 }
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	925 if (closeout && ERRFD_IS_READ(channel) && (fd == channel->errfd)) {
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	926 channel->errfd = FD_CLOSED;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	927 }
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	928
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	929 if (closein && fd == channel->writefd) {
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	930 channel->writefd = FD_CLOSED;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	931 }
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	932 if (closein && ERRFD_IS_WRITE(channel) && (fd == channel->errfd)) {
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	933 channel->errfd = FD_CLOSED;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	934 }
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	935
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	936 /* if we called shutdown on it and all references are gone, then we
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	937 * need to close() it to stop it lingering */
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	938 if (channel->type->sepfds && channel->readfd == FD_CLOSED
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	939 && channel->writefd == FD_CLOSED && channel->errfd == FD_CLOSED) {
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	940 TRACE(("CLOSE (finally) of %d", fd))
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	941 close(fd);
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	942 }
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	943 }
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	944
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	945
156 8c2b3506f112 Rearrange preprocessor parts so that compilation with various options Matt Johnston <matt@ucc.asn.au> parents: 109 diff changeset	946 #if defined(USING_LISTENERS) \|\| defined(DROPBEAR_CLIENT)
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	947 /* Create a new channel, and start the open request. This is intended
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	948 * for X11, agent, tcp forwarding, and should be filled with channel-specific
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	949 * options, with the calling function calling encrypt_packet() after
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	950 * completion. It is mandatory for the caller to encrypt_packet() if
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	951 * DROPBEAR_SUCCESS is returned */
9 7f77962de998 - Reworked non-channel fd handling to listener.c Matt Johnston <matt@ucc.asn.au> parents: 7 diff changeset	952 int send_msg_channel_open_init(int fd, const struct ChanType *type) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	953
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	954 struct Channel* chan;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	955
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	956 TRACE(("enter send_msg_channel_open_init()"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	957 chan = newchannel(0, type, 0, 0);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	958 if (!chan) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	959 TRACE(("leave send_msg_channel_open_init() - FAILED in newchannel()"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	960 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	961 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	962
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	963 /* set fd non-blocking */
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	964 setnonblocking(fd);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	965
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	966 chan->writefd = chan->readfd = fd;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	967 ses.maxfd = MAX(ses.maxfd, fd);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	968
243 0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	969 chan->await_open = 1;
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	970
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	971 /* now open the channel connection */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	972 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	973
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	974 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_OPEN);
9 7f77962de998 - Reworked non-channel fd handling to listener.c Matt Johnston <matt@ucc.asn.au> parents: 7 diff changeset	975 buf_putstring(ses.writepayload, type->name, strlen(type->name));
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	976 buf_putint(ses.writepayload, chan->index);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	977 buf_putint(ses.writepayload, RECV_MAXWINDOW);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	978 buf_putint(ses.writepayload, RECV_MAXPACKET);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	979
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	980 TRACE(("leave send_msg_channel_open_init()"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	981 return DROPBEAR_SUCCESS;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	982 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	983
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	984 /* Confirmation that our channel open request (for forwardings) was
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	985 * successful*/
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	986 void recv_msg_channel_open_confirmation() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	987
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	988 struct Channel * channel;
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	989 int ret;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	990
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	991 TRACE(("enter recv_msg_channel_open_confirmation"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	992
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	993 channel = getchannel();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	994
243 0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	995 if (!channel->await_open) {
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	996 dropbear_exit("unexpected channel reply");
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	997 }
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	998 channel->await_open = 0;
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	999
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1000 channel->remotechan = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1001 channel->transwindow = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1002 channel->transmaxpacket = buf_getint(ses.payload);
13 db2c8e6fb284 Fixed stupid agentfwd error (using the listening FD, not the accepted on. gah) Matt Johnston <matt@ucc.asn.au> parents: 9 diff changeset	1003
187 c44df7123b0a compile fix when TRACE debugging is enabled Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	1004 TRACE(("new chan remote %d local %d",
c44df7123b0a compile fix when TRACE debugging is enabled Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	1005 channel->remotechan, channel->index))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1006
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	1007 /* Run the inithandler callback */
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	1008 if (channel->type->inithandler) {
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	1009 ret = channel->type->inithandler(channel);
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	1010 if (ret > 0) {
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	1011 remove_channel(channel);
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	1012 TRACE(("inithandler returned failure %d", ret))
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	1013 }
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	1014 }
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	1015
13 db2c8e6fb284 Fixed stupid agentfwd error (using the listening FD, not the accepted on. gah) Matt Johnston <matt@ucc.asn.au> parents: 9 diff changeset	1016
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	1017 TRACE(("leave recv_msg_channel_open_confirmation"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1018 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1019
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1020 /* Notification that our channel open request failed */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1021 void recv_msg_channel_open_failure() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1022
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1023 struct Channel * channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1024
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	1025 channel = getchannel();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1026
243 0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1027 if (!channel->await_open) {
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1028 dropbear_exit("unexpected channel reply");
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1029 }
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1030 channel->await_open = 0;
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1031
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	1032 remove_channel(channel);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1033 }
156 8c2b3506f112 Rearrange preprocessor parts so that compilation with various options Matt Johnston <matt@ucc.asn.au> parents: 109 diff changeset	1034 #endif /* USING_LISTENERS */

Mercurial > dropbear

annotate common-channel.c @ 402:173a5f89666c channel-fix