dropbear: common-channel.c annotate

annotate common-channel.c @ 439:ab370c629d36 DROPBEAR_0.49

Fix a stupid bug s/readfd/errfd/ affecting channel close on child exit

author	Matt Johnston <matt@ucc.asn.au>
date	Thu, 22 Feb 2007 16:17:09 +0000
parents	c216212001fc
children	9c61e7af0156

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;
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	151 newchan->flushing = 0;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	152
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	153 newchan->writebuf = cbuf_new(RECV_MAXWINDOW);
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	154 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	155 newchan->recvwindow = RECV_MAXWINDOW;
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	156 newchan->recvdonelen = 0;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	157 newchan->recvmaxpacket = RECV_MAXPACKET;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	158
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	159 ses.channels[i] = newchan;
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	160 ses.chancount++;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	161
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	162 TRACE(("leave newchannel"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	163
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	164 return newchan;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	165 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	166
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	167 /* 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	168 * 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	169 * 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	170 * channel */
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	171 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	172
161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	173 unsigned int chan;
161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	174
161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	175 chan = buf_getint(ses.payload);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	176 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	177 if (kind) {
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	178 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	179 } else {
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	180 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	181 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	182 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	183 return ses.channels[chan];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	184 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	185
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	186 struct Channel* getchannel() {
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	187 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	188 }
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	189
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	190 /* 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	191 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	192
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	193 struct Channel *channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	194 unsigned int i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	195
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	196 /* foreach channel */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	197 for (i = 0; i < ses.chansize; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	198
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	199 channel = ses.channels[i];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	200 if (channel == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	201 /* only process in-use channels */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	202 continue;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	203 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	204
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	205 /* 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	206 if (channel->readfd >= 0 && FD_ISSET(channel->readfd, readfds)) {
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	207 TRACE(("send normal readfd"))
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	208 send_msg_channel_data(channel, 0);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	209 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	210
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	211 /* read stderr data and send it over the wire */
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	212 if (ERRFD_IS_READ(channel) && channel->errfd >= 0
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	213 && FD_ISSET(channel->errfd, readfds)) {
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	214 TRACE(("send normal errfd"))
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	215 send_msg_channel_data(channel, 1);
395 dc37bd8563e8 disapproval of revision '5fdf69ca60d1683cdd9f4c2595134bed26394834' Matt Johnston <matt@ucc.asn.au> parents: 394 diff changeset	216 }
dc37bd8563e8 disapproval of revision '5fdf69ca60d1683cdd9f4c2595134bed26394834' Matt Johnston <matt@ucc.asn.au> parents: 394 diff changeset	217
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	218 /* 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	219 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	220 if (channel->initconn) {
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	221 /* 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	222 check_in_progress(channel);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	223 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	224 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	225 }
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	226 writechannel(channel, channel->writefd, channel->writebuf);
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	227 }
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	228
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	229 /* stderr for client mode */
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	230 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	231 && 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	232 writechannel(channel, channel->errfd, channel->extrabuf);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	233 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	234
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	235 /* 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	236 check_close(channel);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	237
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	238 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	239
9 7f77962de998 - Reworked non-channel fd handling to listener.c Matt Johnston <matt@ucc.asn.au> parents: 7 diff changeset	240 /* 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	241 #ifdef USING_LISTENERS
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	242 handle_listeners(readfds);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	243 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	244 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	245
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	246
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	247 /* 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	248 * 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	249 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	250
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	251 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	252 return 1;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	253 } else if (channel->errfd >= 0 && channel->extrabuf &&
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	254 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	255 return 1;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	256 }
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	257 return 0;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	258 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	259
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	260
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	261 /* EOF/close handling */
78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	262 static void check_close(struct Channel *channel) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	263
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	264 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	265 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	266 channel->errfd, channel->sent_close, channel->recv_close))
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	267 TRACE(("writebuf size %d extrabuf size %d",
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	268 cbuf_getused(channel->writebuf),
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	269 channel->extrabuf ? cbuf_getused(channel->extrabuf) : 0))
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	270
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	271 if (!channel->flushing && channel->type->check_close
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	272 && channel->type->check_close(channel))
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	273 {
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	274 channel->flushing = 1;
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	275 }
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	276
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	277 if (channel->recv_close && !write_pending(channel)) {
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	278 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	279 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	280 send_msg_channel_close(channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	281 }
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	282 remove_channel(channel);
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	283 return;
397 2908122e9eed disapproval of revision '1250b8af44b62d8f4fe0f8d9fc7e7a1cc34e7e1c' Matt Johnston <matt@ucc.asn.au> parents: 396 diff changeset	284 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	285
364 90cb290836de Passes most test cases now Matt Johnston <matt@ucc.asn.au> parents: 363 diff changeset	286 if (channel->recv_eof && !write_pending(channel)) {
90cb290836de Passes most test cases now Matt Johnston <matt@ucc.asn.au> parents: 363 diff changeset	287 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	288 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	289
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	290 /* Special handling for flushing read data after an exit. We
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	291 read regardless of whether the select FD was set,
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	292 and if there isn't data available, the channel will get closed. */
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	293 if (channel->flushing) {
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	294 TRACE(("might send data, flushing"))
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	295 if (channel->readfd >= 0 && channel->transwindow > 0) {
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	296 TRACE(("send data readfd"))
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	297 send_msg_channel_data(channel, 0);
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	298 }
439 ab370c629d36 Fix a stupid bug s/readfd/errfd/ affecting channel close on child exit Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	299 if (ERRFD_IS_READ(channel) && channel->errfd >= 0
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	300 && channel->transwindow > 0) {
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	301 TRACE(("send data errfd"))
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	302 send_msg_channel_data(channel, 1);
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	303 }
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	304 }
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	305
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	306 /* 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	307 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	308 && channel->readfd == FD_CLOSED
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	309 && (ERRFD_IS_WRITE(channel) \|\| channel->errfd == FD_CLOSED)) {
397 2908122e9eed disapproval of revision '1250b8af44b62d8f4fe0f8d9fc7e7a1cc34e7e1c' Matt Johnston <matt@ucc.asn.au> parents: 396 diff changeset	310 send_msg_channel_eof(channel);
2908122e9eed disapproval of revision '1250b8af44b62d8f4fe0f8d9fc7e7a1cc34e7e1c' Matt Johnston <matt@ucc.asn.au> parents: 396 diff changeset	311 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	312
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	313 /* 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	314 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	315 && channel->readfd == FD_CLOSED
423 b2b67cfcd66e - Fix bug in child-exit handling where the wrong pid was being matched. Matt Johnston <matt@ucc.asn.au> parents: 416 diff changeset	316 && (ERRFD_IS_WRITE(channel) \|\| channel->errfd == FD_CLOSED)
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	317 && !write_pending(channel)) {
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	318 TRACE(("sending close, readfd is closed"))
397 2908122e9eed disapproval of revision '1250b8af44b62d8f4fe0f8d9fc7e7a1cc34e7e1c' Matt Johnston <matt@ucc.asn.au> parents: 396 diff changeset	319 send_msg_channel_close(channel);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	320 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	321 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	322
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	323 /* 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	324 * 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	325 * 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	326 * function */
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	327 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	328
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	329 int val;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	330 socklen_t vallen = sizeof(val);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	331
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	332 TRACE(("enter check_in_progress"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	333
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	334 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	335 \|\| 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	336 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	337 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	338 close(channel->writefd);
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	339 delete_channel(channel);
78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	340 TRACE(("leave check_in_progress: fail"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	341 } 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	342 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	343 channel->recvmaxpacket);
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	344 channel->readfd = channel->writefd;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	345 channel->initconn = 0;
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	346 TRACE(("leave check_in_progress: success"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	347 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	348 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	349
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	350
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	351 /* 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	352 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	353
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	354 TRACE(("enter send_msg_channel_close"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	355 if (channel->type->closehandler) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	356 channel->type->closehandler(channel);
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 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	360
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	361 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_CLOSE);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	362 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	363
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	364 encrypt_packet();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	365
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	366 channel->sent_eof = 1;
78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	367 channel->sent_close = 1;
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	368 close_chan_fd(channel, channel->readfd, SHUT_RD);
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	369 close_chan_fd(channel, channel->errfd, SHUT_RDWR);
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	370 close_chan_fd(channel, channel->writefd, SHUT_WR);
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	371 TRACE(("leave send_msg_channel_close"))
4 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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	374 /* call this when trans/eof channels are closed */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	375 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	376
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(("enter send_msg_channel_eof"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	378 CHECKCLEARTOWRITE();
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 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_EOF);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	381 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	382
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	383 encrypt_packet();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	384
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	385 channel->sent_eof = 1;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	386
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	387 TRACE(("leave send_msg_channel_eof"))
4 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
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	390 /* 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	391 * 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	392 * possible */
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	393 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	394
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	395 int len, maxlen;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	396
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	397 TRACE(("enter writechannel fd %d", fd))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	398
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	399 maxlen = cbuf_readlen(cbuf);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	400
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	401 /* Write the data out */
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	402 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	403 if (len <= 0) {
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	404 TRACE(("errno %d len %d", errno, len))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	405 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	406 close_chan_fd(channel, fd, SHUT_WR);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	407 }
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	408 TRACE(("leave writechannel: len <= 0"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	409 return;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	410 }
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	411 TRACE(("writechannel wrote %d", len))
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	412
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	413 cbuf_incrread(cbuf, len);
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	414 channel->recvdonelen += len;
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	415
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	416 /* Window adjust handling */
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	417 if (channel->recvdonelen >= RECV_WINDOWEXTEND) {
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	418 /* Set it back to max window */
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	419 send_msg_channel_window_adjust(channel, channel->recvdonelen);
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	420 channel->recvwindow += channel->recvdonelen;
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	421 channel->recvdonelen = 0;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	422 }
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	423
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 221 diff changeset	424 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	425 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	426 dropbear_assert(channel->extrabuf == NULL \|\|
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	427 channel->recvwindow <= cbuf_getavail(channel->extrabuf));
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	428
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	429 TRACE(("leave writechannel"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	430 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	431
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	432 /* 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	433 * 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	434 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	435
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	436 unsigned int i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	437 struct Channel * channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	438
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	439 for (i = 0; i < ses.chansize; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	440
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	441 channel = ses.channels[i];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	442 if (channel == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	443 continue;
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
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	446 /* Stuff to put over the wire */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	447 if (channel->transwindow > 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	448
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	449 if (channel->readfd >= 0) {
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	450 FD_SET(channel->readfd, readfds);
4 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
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	453 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	454 FD_SET(channel->errfd, readfds);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	455 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	456 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	457
397 2908122e9eed disapproval of revision '1250b8af44b62d8f4fe0f8d9fc7e7a1cc34e7e1c' Matt Johnston <matt@ucc.asn.au> parents: 396 diff changeset	458 /* 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	459 if ((channel->writefd >= 0 && cbuf_getused(channel->writebuf) > 0 )
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	460 \|\| channel->initconn) {
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	461 FD_SET(channel->writefd, writefds);
4 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
433 c216212001fc Fix for -pedantic -ansi compilation, change // to /*/, plus some signedness Matt Johnston <matt@ucc.asn.au>* parents: 423 diff changeset	464 if (ERRFD_IS_WRITE(channel) && channel->errfd >= 0
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	465 && 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	466 FD_SET(channel->errfd, writefds);
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	467 }
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	468
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	469 } /* foreach channel */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	470
9 7f77962de998 - Reworked non-channel fd handling to listener.c Matt Johnston <matt@ucc.asn.au> parents: 7 diff changeset	471 #ifdef USING_LISTENERS
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	472 set_listener_fds(readfds);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	473 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	474
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	475 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	476
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	477 /* 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	478 * 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	479 * etc) FD is also EOF */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	480 void recv_msg_channel_eof() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	481
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	482 struct Channel * channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	483
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	484 TRACE(("enter recv_msg_channel_eof"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	485
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	486 channel = getchannel_msg("EOF");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	487
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	488 channel->recv_eof = 1;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	489
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	490 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	491 TRACE(("leave recv_msg_channel_eof"))
4 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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	494
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	495 /* 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	496 void recv_msg_channel_close() {
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_close"))
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("Close");
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;
78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	505 channel->recv_close = 1;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	506
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	507 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	508 TRACE(("leave recv_msg_channel_close"))
4 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 /* 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	512 * channel close */
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	513 static void remove_channel(struct Channel * channel) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	514
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	515 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	516 TRACE(("channel index is %d", channel->index))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	517
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	518 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	519 channel->writebuf = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	520
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	521 if (channel->extrabuf) {
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	522 cbuf_free(channel->extrabuf);
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	523 channel->extrabuf = NULL;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	524 }
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	525
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	526
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	527 /* 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	528 * yet (they might have been shutdown etc) */
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	529 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	530 close(channel->writefd);
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	531 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	532 close(channel->readfd);
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	533 TRACE(("CLOSE errfd %d", channel->errfd))
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	534 close(channel->errfd);
2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	535
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	536 channel->typedata = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	537
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	538 delete_channel(channel);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	539
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	540 TRACE(("leave remove_channel"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	541 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	542
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	543 /* 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	544 static void delete_channel(struct Channel *channel) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	545
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	546 ses.channels[channel->index] = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	547 m_free(channel);
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	548 ses.chancount--;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	549
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	550 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	551
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	552
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	553 /* 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	554 * such as chansession or x11fwd */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	555 void recv_msg_channel_request() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	556
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	557 struct Channel *channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	558
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	559 TRACE(("enter recv_msg_channel_request"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	560
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	561 channel = getchannel();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	562
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	563 if (channel->type->reqhandler) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	564 channel->type->reqhandler(channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	565 } else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	566 send_msg_channel_failure(channel);
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
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	569 TRACE(("leave recv_msg_channel_request"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	570
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	571 }
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 /* 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	574 * channel_data packet to send.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	575 * 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	576 * 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	577 * exttype */
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	578 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	579
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	580 int len;
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	581 size_t maxlen, size_pos;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	582 int fd;
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 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	585
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	586 TRACE(("enter send_msg_channel_data"))
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	587 dropbear_assert(!channel->sent_close);
4 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 if (isextended) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	590 fd = channel->errfd;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	591 } else {
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	592 fd = channel->readfd;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	593 }
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	594 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	595 dropbear_assert(fd >= 0);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	596
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	597 maxlen = MIN(channel->transwindow, channel->transmaxpacket);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	598 /* -(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	599 * exttype if is extended */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	600 maxlen = MIN(maxlen,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	601 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	602 TRACE(("maxlen %d", maxlen))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	603 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	604 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	605 return;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	606 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	607
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	608 buf_putbyte(ses.writepayload,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	609 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	610 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	611 if (isextended) {
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	612 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	613 }
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	614 /* 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	615 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	616 buf_putint(ses.writepayload, 0);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	617
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	618 /* 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	619 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	620 if (len <= 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	621 if (len == 0 \|\| errno != EINTR) {
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	622 /* This will also get hit in the case of EAGAIN. The only
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	623 time we expect to receive EAGAIN is when we're flushing a FD,
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	624 in which case it can be treated the same as EOF */
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	625 close_chan_fd(channel, fd, SHUT_RD);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	626 }
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	627 ses.writepayload->len = ses.writepayload->pos = 0;
423 b2b67cfcd66e - Fix bug in child-exit handling where the wrong pid was being matched. Matt Johnston <matt@ucc.asn.au> parents: 416 diff changeset	628 TRACE(("leave send_msg_channel_data: len %d read err %d or EOF for fd %d",
b2b67cfcd66e - Fix bug in child-exit handling where the wrong pid was being matched. Matt Johnston <matt@ucc.asn.au> parents: 416 diff changeset	629 len, errno, fd))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	630 return;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	631 }
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	632 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	633 /* ... real size here */
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	634 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	635 buf_putint(ses.writepayload, len);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	636
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	637 channel->transwindow -= len;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	638
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	639 encrypt_packet();
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	640
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	641 /* If we receive less data than we requested when flushing, we've
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	642 reached the equivalent of EOF */
433 c216212001fc Fix for -pedantic -ansi compilation, change // to /*/, plus some signedness Matt Johnston <matt@ucc.asn.au>* parents: 423 diff changeset	643 if (channel->flushing && len < (ssize_t)maxlen)
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	644 {
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	645 TRACE(("closing from channel, flushing out."))
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	646 close_chan_fd(channel, fd, SHUT_RD);
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	647 }
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	648 TRACE(("leave send_msg_channel_data"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	649 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	650
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	651 /* We receive channel data */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	652 void recv_msg_channel_data() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	653
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	654 struct Channel *channel;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	655
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	656 channel = getchannel();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	657
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	658 common_recv_msg_channel_data(channel, channel->writefd, channel->writebuf);
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	659 }
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	660
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	661 /* 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	662 * for writing to the local file descriptor */
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	663 void common_recv_msg_channel_data(struct Channel *channel, int fd,
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	664 circbuffer * cbuf) {
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	665
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	666 unsigned int datalen;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	667 unsigned int maxdata;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	668 unsigned int buflen;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	669 unsigned int len;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	670
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	671 TRACE(("enter recv_msg_channel_data"))
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	672
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	673 if (channel->recv_eof) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	674 dropbear_exit("received data after eof");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	675 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	676
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	677 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	678 /* 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	679 * 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	680 * 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	681 return;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	682 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	683
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	684 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	685 TRACE(("length %d", datalen))
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	686
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	687 maxdata = cbuf_getavail(cbuf);
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	688
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	689 /* 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	690 * 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	691 * just die horribly */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	692 if (datalen > maxdata) {
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	693 dropbear_exit("Oversized packet");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	694 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	695
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	696 /* 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	697 * just "leave it for next time" like with writechannel, since this
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	698 * is payload data */
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	699 len = datalen;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	700 while (len > 0) {
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	701 buflen = cbuf_writelen(cbuf);
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	702 buflen = MIN(buflen, len);
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	703
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	704 memcpy(cbuf_writeptr(cbuf, buflen),
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	705 buf_getptr(ses.payload, buflen), buflen);
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	706 cbuf_incrwrite(cbuf, buflen);
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	707 buf_incrpos(ses.payload, buflen);
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	708 len -= buflen;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	709 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	710
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 221 diff changeset	711 dropbear_assert(channel->recvwindow >= datalen);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	712 channel->recvwindow -= datalen;
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 221 diff changeset	713 dropbear_assert(channel->recvwindow <= RECV_MAXWINDOW);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	714
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	715 TRACE(("leave recv_msg_channel_data"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	716 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	717
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	718 /* 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	719 * 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	720 * 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	721 void recv_msg_channel_window_adjust() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	722
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	723 struct Channel * channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	724 unsigned int incr;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	725
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	726 channel = getchannel();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	727
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	728 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	729 TRACE(("received window increment %d", incr))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	730 incr = MIN(incr, MAX_TRANS_WIN_INCR);
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 channel->transwindow += incr;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	733 channel->transwindow = MIN(channel->transwindow, MAX_TRANS_WINDOW);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	734
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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	737 /* 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	738 * end know */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	739 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	740 unsigned int incr) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	741
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	742 TRACE(("sending window adjust %d", incr))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	743 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	744
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	745 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	746 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	747 buf_putint(ses.writepayload, incr);
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 encrypt_packet();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	750 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	751
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	752 /* 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	753 void recv_msg_channel_open() {
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 unsigned char *type;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	756 unsigned int typelen;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	757 unsigned int remotechan, transwindow, transmaxpacket;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	758 struct Channel *channel;
7 425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	759 const struct ChanType **cp;
6 ab00ef513e97 Sorted out the first channel init issues. Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	760 const struct ChanType *chantype;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	761 unsigned int errtype = SSH_OPEN_UNKNOWN_CHANNEL_TYPE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	762 int ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	763
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	764
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	765 TRACE(("enter recv_msg_channel_open"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	766
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	767 /* get the packet contents */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	768 type = buf_getstring(ses.payload, &typelen);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	769
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	770 remotechan = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	771 transwindow = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	772 transwindow = MIN(transwindow, MAX_TRANS_WINDOW);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	773 transmaxpacket = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	774 transmaxpacket = MIN(transmaxpacket, MAX_TRANS_PAYLOAD_LEN);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	775
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	776 /* figure what type of packet it is */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	777 if (typelen > MAX_NAME_LEN) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	778 goto failure;
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
7 425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	781 /* 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	782 * 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	783 * this list and find the matching name */
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	784 for (cp = &ses.chantypes[0], chantype = (*cp);
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	785 chantype != NULL;
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	786 cp++, chantype = (*cp)) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	787 if (strcmp(type, chantype->name) == 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	788 break;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	789 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	790 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	791
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	792 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	793 TRACE(("No matching type for '%s'", type))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	794 goto failure;
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
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(("matched type '%s'", type))
7 425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	798
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	799 /* create the channel */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	800 channel = newchannel(remotechan, chantype, transwindow, transmaxpacket);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	801
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	802 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	803 TRACE(("newchannel returned NULL"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	804 goto failure;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	805 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	806
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	807 if (channel->type->inithandler) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	808 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	809 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	810 /* 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	811 goto cleanup;
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	812 }
6 ab00ef513e97 Sorted out the first channel init issues. Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	813 if (ret > 0) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	814 errtype = ret;
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	815 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	816 TRACE(("inithandler returned failure %d", ret))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	817 goto failure;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	818 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	819 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	820
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	821 /* success */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	822 send_msg_channel_open_confirmation(channel, channel->recvwindow,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	823 channel->recvmaxpacket);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	824 goto cleanup;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	825
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	826 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	827 TRACE(("recv_msg_channel_open failure"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	828 send_msg_channel_open_failure(remotechan, errtype, "", "");
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 cleanup:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	831 m_free(type);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	832
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	833 TRACE(("leave recv_msg_channel_open"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	834 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	835
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	836 /* Send a failure message */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	837 void send_msg_channel_failure(struct Channel *channel) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	838
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	839 TRACE(("enter send_msg_channel_failure"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	840 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	841
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	842 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_FAILURE);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	843 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	844
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	845 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	846 TRACE(("leave send_msg_channel_failure"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	847 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	848
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	849 /* Send a success message */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	850 void send_msg_channel_success(struct Channel *channel) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	851
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	852 TRACE(("enter send_msg_channel_success"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	853 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	854
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	855 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_SUCCESS);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	856 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	857
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	858 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	859 TRACE(("leave send_msg_channel_success"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	860 }
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 /* 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	863 * code (usually resource shortage or unknown chan type) */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	864 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	865 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	866
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	867 TRACE(("enter send_msg_channel_open_failure"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	868 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	869
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	870 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	871 buf_putint(ses.writepayload, remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	872 buf_putint(ses.writepayload, reason);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	873 buf_putstring(ses.writepayload, text, strlen((char*)text));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	874 buf_putstring(ses.writepayload, lang, strlen((char*)lang));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	875
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	876 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	877 TRACE(("leave send_msg_channel_open_failure"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	878 }
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 /* 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	881 * allocated and the receive parameters */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	882 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	883 unsigned int recvwindow,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	884 unsigned int recvmaxpacket) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	885
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	886 TRACE(("enter send_msg_channel_open_confirmation"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	887 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	888
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	889 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	890 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	891 buf_putint(ses.writepayload, channel->index);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	892 buf_putint(ses.writepayload, recvwindow);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	893 buf_putint(ses.writepayload, recvmaxpacket);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	894
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	895 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	896 TRACE(("leave send_msg_channel_open_confirmation"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	897 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	898
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	899 /* 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	900 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	901
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	902 int closein = 0, closeout = 0;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	903
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	904 if (channel->type->sepfds) {
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	905 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	906 shutdown(fd, how);
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	907 if (how == 0) {
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	908 closeout = 1;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	909 } else {
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	910 closein = 1;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	911 }
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	912 } else {
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	913 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	914 close(fd);
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	915 closein = closeout = 1;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	916 }
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	917
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	918 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	919 channel->readfd = FD_CLOSED;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	920 }
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	921 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	922 channel->errfd = FD_CLOSED;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	923 }
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	924
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	925 if (closein && fd == channel->writefd) {
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	926 channel->writefd = FD_CLOSED;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	927 }
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	928 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	929 channel->errfd = FD_CLOSED;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	930 }
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	931
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	932 /* 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	933 * 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	934 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	935 && channel->writefd == FD_CLOSED && channel->errfd == FD_CLOSED) {
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	936 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	937 close(fd);
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	938 }
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	939 }
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	940
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	941
156 8c2b3506f112 Rearrange preprocessor parts so that compilation with various options Matt Johnston <matt@ucc.asn.au> parents: 109 diff changeset	942 #if defined(USING_LISTENERS) \|\| defined(DROPBEAR_CLIENT)
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	943 /* 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	944 * 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	945 * 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	946 * 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	947 * DROPBEAR_SUCCESS is returned */
9 7f77962de998 - Reworked non-channel fd handling to listener.c Matt Johnston <matt@ucc.asn.au> parents: 7 diff changeset	948 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	949
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	950 struct Channel* chan;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	951
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	952 TRACE(("enter send_msg_channel_open_init()"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	953 chan = newchannel(0, type, 0, 0);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	954 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	955 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	956 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	957 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	958
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	959 /* set fd non-blocking */
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	960 setnonblocking(fd);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	961
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	962 chan->writefd = chan->readfd = fd;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	963 ses.maxfd = MAX(ses.maxfd, fd);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	964
243 0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	965 chan->await_open = 1;
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	966
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	967 /* now open the channel connection */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	968 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	969
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	970 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	971 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	972 buf_putint(ses.writepayload, chan->index);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	973 buf_putint(ses.writepayload, RECV_MAXWINDOW);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	974 buf_putint(ses.writepayload, RECV_MAXPACKET);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	975
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	976 TRACE(("leave send_msg_channel_open_init()"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	977 return DROPBEAR_SUCCESS;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	978 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	979
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	980 /* 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	981 * successful*/
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	982 void recv_msg_channel_open_confirmation() {
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 struct Channel * channel;
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	985 int ret;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	986
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	987 TRACE(("enter recv_msg_channel_open_confirmation"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	988
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	989 channel = getchannel();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	990
243 0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	991 if (!channel->await_open) {
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	992 dropbear_exit("unexpected channel reply");
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	993 }
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	994 channel->await_open = 0;
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	995
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	996 channel->remotechan = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	997 channel->transwindow = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	998 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	999
187 c44df7123b0a compile fix when TRACE debugging is enabled Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	1000 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	1001 channel->remotechan, channel->index))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1002
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	1003 /* Run the inithandler callback */
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	1004 if (channel->type->inithandler) {
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	1005 ret = channel->type->inithandler(channel);
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	1006 if (ret > 0) {
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	1007 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	1008 TRACE(("inithandler returned failure %d", ret))
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	1009 }
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	1010 }
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	1011
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	1012
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	1013 TRACE(("leave recv_msg_channel_open_confirmation"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1014 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1015
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1016 /* Notification that our channel open request failed */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1017 void recv_msg_channel_open_failure() {
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 struct Channel * channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1020
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	1021 channel = getchannel();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1022
243 0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1023 if (!channel->await_open) {
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1024 dropbear_exit("unexpected channel reply");
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1025 }
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1026 channel->await_open = 0;
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1027
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	1028 remove_channel(channel);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1029 }
156 8c2b3506f112 Rearrange preprocessor parts so that compilation with various options Matt Johnston <matt@ucc.asn.au> parents: 109 diff changeset	1030 #endif /* USING_LISTENERS */

Mercurial > dropbear

annotate common-channel.c @ 439:ab370c629d36 DROPBEAR_0.49