dropbear: common-channel.c annotate

annotate common-channel.c @ 330:5488db2e9e4e

merge of 332f709a4cb39cde4cedab7c3be89e05f3023067 and ca4ca78b82c5d430c69ce01bf794e8886ce81431

author	Matt Johnston <matt@ucc.asn.au>
date	Sat, 10 Jun 2006 16:39:40 +0000
parents	8ed0dce45126 baea1d43e7eb
children	d6b8815a9b5e

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);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	46 static void send_msg_channel_data(struct Channel *channel, int isextended,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	47 unsigned int exttype);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	48 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	49 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	50 static void removechannel(struct Channel *channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	51 static void deletechannel(struct Channel *channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	52 static void checkinitdone(struct Channel *channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	53 static void checkclose(struct Channel *channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	54
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	55 static void closewritefd(struct Channel * channel);
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	56 static void closereadfd(struct Channel * channel, int fd);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	57 static void closechanfd(struct Channel *channel, int fd, int how);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	58
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	59 #define FD_UNINIT (-2)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	60 #define FD_CLOSED (-1)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	61
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))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	88 removechannel(ses.channels[i]);
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;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	138 newchan->sentclosed = newchan->recvclosed = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	139 newchan->senteof = newchan->recveof = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	140
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	141 newchan->remotechan = remotechan;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	142 newchan->transwindow = transwindow;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	143 newchan->transmaxpacket = transmaxpacket;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	144
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	145 newchan->typedata = NULL;
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	146 newchan->writefd = FD_UNINIT;
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	147 newchan->readfd = FD_UNINIT;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	148 newchan->errfd = FD_CLOSED; /* this isn't always set to start with */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	149 newchan->initconn = 0;
243 0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	150 newchan->await_open = 0;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	151
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	152 newchan->writebuf = cbuf_new(RECV_MAXWINDOW);
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	153 newchan->extrabuf = NULL; /* The user code can set it up */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	154 newchan->recvwindow = RECV_MAXWINDOW;
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	155 newchan->recvdonelen = 0;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	156 newchan->recvmaxpacket = RECV_MAXPACKET;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	157
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	158 ses.channels[i] = newchan;
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	159 ses.chancount++;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	160
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	161 TRACE(("leave newchannel"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	162
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	163 return newchan;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	164 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	165
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	166 /* Returns the channel structure corresponding to the channel in the current
161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	167 * data packet (ses.payload must be positioned appropriately) */
161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	168 struct Channel* getchannel() {
161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	169
161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	170 unsigned int chan;
161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	171
161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	172 chan = buf_getint(ses.payload);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	173 if (chan >= ses.chansize \|\| ses.channels[chan] == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	174 return NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	175 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	176 return ses.channels[chan];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	177 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	178
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	179 /* 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	180 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	181
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	182 struct Channel *channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	183 unsigned int i;
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 /* iterate through all the possible channels */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	186 for (i = 0; i < ses.chansize; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	187
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	188 channel = ses.channels[i];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	189 if (channel == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	190 /* only process in-use channels */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	191 continue;
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
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	194 /* 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	195 if (channel->readfd >= 0 && FD_ISSET(channel->readfd, readfds)) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	196 send_msg_channel_data(channel, 0, 0);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	197 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	198
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	199 /* read stderr data and send it over the wire */
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	200 if (channel->extrabuf == NULL &&
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	201 channel->errfd >= 0 && FD_ISSET(channel->errfd, readfds)) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	202 send_msg_channel_data(channel, 1, SSH_EXTENDED_DATA_STDERR);
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
329 8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	205 /* if we can read from the writefd, it might be closed, so we try to
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	206 * see if it has errors */
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	207 if (channel->writefd >= 0 && channel->writefd != channel->readfd
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	208 && FD_ISSET(channel->writefd, readfds)) {
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	209 if (channel->initconn) {
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	210 /* Handling for "in progress" connection - this is needed
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	211 * to avoid spinning 100% CPU when we connect to a server
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	212 * which doesn't send anything (tcpfwding) */
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	213 checkinitdone(channel);
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	214 continue; /* Important not to use the channel after
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	215 checkinitdone(), as it may be NULL */
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	216 }
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	217 ret = write(channel->writefd, NULL, 0); /* Fake write */
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	218 if (ret < 0 && errno != EINTR && errno != EAGAIN) {
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	219 closewritefd(channel);
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	220 }
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	221 }
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	222
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	223 /* 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	224 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	225 if (channel->initconn) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	226 checkinitdone(channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	227 continue; /* Important not to use the channel after
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	228 checkinitdone(), as it may be NULL */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	229 }
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	230 writechannel(channel, channel->writefd, channel->writebuf);
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	231 }
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	232
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	233 /* stderr for client mode */
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	234 if (channel->extrabuf != NULL
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	235 && 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	236 writechannel(channel, channel->errfd, channel->extrabuf);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	237 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	238
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	239 /* now handle any of the channel-closing type stuff */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	240 checkclose(channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	241
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	242 } /* foreach channel */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	243
9 7f77962de998 - Reworked non-channel fd handling to listener.c Matt Johnston <matt@ucc.asn.au> parents: 7 diff changeset	244 /* 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	245 #ifdef USING_LISTENERS
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	246 handle_listeners(readfds);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	247 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	248 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	249
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	250
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	251 /* do all the EOF/close type stuff checking for a channel */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	252 static void checkclose(struct Channel *channel) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	253
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	254 TRACE(("checkclose: writefd %d, readfd %d, errfd %d, sentclosed %d, recvclosed %d",
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	255 channel->writefd, channel->readfd,
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	256 channel->errfd, channel->sentclosed, channel->recvclosed))
300 baea1d43e7eb Some cleanups/fixes for various TRACE statements Matt Johnston <matt@ucc.asn.au> parents: 278 diff changeset	257 TRACE(("writebuf size %d extrabuf ptr 0x%x extrabuf size %d",
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	258 cbuf_getused(channel->writebuf),
2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	259 channel->writebuf,
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	260 channel->writebuf ? 0 : cbuf_getused(channel->extrabuf)))
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	261
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	262 if (!channel->sentclosed) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	263
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	264 /* check for exited - currently only used for server sessions,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	265 * if the shell has exited etc */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	266 if (channel->type->checkclose) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	267 if (channel->type->checkclose(channel)) {
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	268 closewritefd(channel);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	269 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	270 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	271
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	272 if (!channel->senteof
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	273 && channel->readfd == FD_CLOSED
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	274 && (channel->extrabuf != NULL \|\| channel->errfd == FD_CLOSED)) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	275 send_msg_channel_eof(channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	276 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	277
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	278 if (channel->writefd == FD_CLOSED
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	279 && channel->readfd == FD_CLOSED
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	280 && (channel->extrabuf != NULL \|\| channel->errfd == FD_CLOSED)) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	281 send_msg_channel_close(channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	282 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	283 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	284
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	285 /* When either party wishes to terminate the channel, it sends
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	286 * SSH_MSG_CHANNEL_CLOSE. Upon receiving this message, a party MUST
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	287 * send back a SSH_MSG_CHANNEL_CLOSE unless it has already sent this
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	288 * message for the channel. The channel is considered closed for a
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	289 * party when it has both sent and received SSH_MSG_CHANNEL_CLOSE, and
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	290 * the party may then reuse the channel number. A party MAY send
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	291 * SSH_MSG_CHANNEL_CLOSE without having sent or received
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	292 * SSH_MSG_CHANNEL_EOF.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	293 * (from draft-ietf-secsh-connect)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	294 */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	295 if (channel->recvclosed) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	296 if (! channel->sentclosed) {
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	297 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	298 send_msg_channel_close(channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	299 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	300 removechannel(channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	301 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	302 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	303
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	304
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	305 /* 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	306 * 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	307 * 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	308 * function */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	309 static void checkinitdone(struct Channel *channel) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	310
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	311 int val;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	312 socklen_t vallen = sizeof(val);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	313
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	314 TRACE(("enter checkinitdone"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	315
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	316 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	317 \|\| 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	318 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	319 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	320 close(channel->writefd);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	321 deletechannel(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	322 TRACE(("leave checkinitdone: fail"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	323 } 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	324 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	325 channel->recvmaxpacket);
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	326 channel->readfd = channel->writefd;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	327 channel->initconn = 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	328 TRACE(("leave checkinitdone: success"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	329 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	330 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	331
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	332
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	333
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	334 /* 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	335 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	336
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	337 TRACE(("enter send_msg_channel_close"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	338 /* XXX server */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	339 if (channel->type->closehandler) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	340 channel->type->closehandler(channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	341 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	342
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	343 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	344
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	345 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_CLOSE);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	346 buf_putint(ses.writepayload, channel->remotechan);
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 encrypt_packet();
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 channel->senteof = 1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	351 channel->sentclosed = 1;
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	352 TRACE(("leave send_msg_channel_close"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	353 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	354
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	355 /* call this when trans/eof channels are closed */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	356 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	357
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	358 TRACE(("enter send_msg_channel_eof"))
4 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_EOF);
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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	366 channel->senteof = 1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	367
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	368 TRACE(("leave send_msg_channel_eof"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	369 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	370
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	371 /* 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	372 * 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	373 * possible */
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	374 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	375
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	376 int len, maxlen;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	377
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	378 TRACE(("enter writechannel"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	379
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	380 maxlen = cbuf_readlen(cbuf);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	381
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	382 /* Write the data out */
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	383 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	384 if (len <= 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	385 if (len < 0 && errno != EINTR) {
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	386 /* no more to write - we close it even if the fd was stderr, since
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	387 * that's a nasty failure too */
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	388 closewritefd(channel);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	389 }
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	390 TRACE(("leave writechannel: len <= 0"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	391 return;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	392 }
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	393
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	394 cbuf_incrread(cbuf, len);
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	395 channel->recvdonelen += len;
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	396
269 92b9b182c615 Check that the output circular buffer is actually empty before Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	397 if (fd == channel->writefd && cbuf_getused(cbuf) == 0 && channel->recveof) {
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	398 /* Check if we're closing up */
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	399 closewritefd(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	400 TRACE(("leave writechannel: recveof set"))
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	401 return;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	402 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	403
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	404 /* Window adjust handling */
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	405 if (channel->recvdonelen >= RECV_WINDOWEXTEND) {
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	406 /* Set it back to max window */
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	407 send_msg_channel_window_adjust(channel, channel->recvdonelen);
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	408 channel->recvwindow += channel->recvdonelen;
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	409 channel->recvdonelen = 0;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	410 }
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	411
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 221 diff changeset	412 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	413 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	414 dropbear_assert(channel->extrabuf == NULL \|\|
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	415 channel->recvwindow <= cbuf_getavail(channel->extrabuf));
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	416
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	417
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	418 TRACE(("leave writechannel"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	419 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	420
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	421 /* 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	422 * 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	423 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	424
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	425 unsigned int i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	426 struct Channel * channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	427
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	428 for (i = 0; i < ses.chansize; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	429
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	430 channel = ses.channels[i];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	431 if (channel == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	432 continue;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	433 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	434
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	435 /* Stuff to put over the wire */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	436 if (channel->transwindow > 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	437
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	438 if (channel->readfd >= 0) {
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	439 FD_SET(channel->readfd, readfds);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	440 }
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	441
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	442 if (channel->extrabuf == NULL && channel->errfd >= 0) {
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	443 FD_SET(channel->errfd, readfds);
4 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 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	446
329 8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	447 /* For checking FD status (ie closure etc) - we don't actually
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	448 * read data from writefd */
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	449 TRACE(("writefd = %d, readfd %d, errfd %d, bufused %d",
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	450 channel->writefd, channel->readfd,
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	451 channel->errfd,
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	452 cbuf_getused(channel->writebuf) ))
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	453 if (channel->writefd >= 0 && channel->writefd != channel->readfd) {
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	454 FD_SET(channel->writefd, readfds);
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	455 }
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	456
8ed0dce45126 disapproval of revision 'a4c1a9be4db326f8f7adcf30f876fadedf87b203' Matt Johnston <matt@ucc.asn.au> parents: 261 diff changeset	457 /* Stuff from the wire, to local program/shell/user etc */
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	458 if ((channel->writefd >= 0 && cbuf_getused(channel->writebuf) > 0 )
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	459 \|\| channel->initconn) {
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	460
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
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	464 if (channel->extrabuf != NULL && 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
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	486 channel = getchannel();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	487 if (channel == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	488 dropbear_exit("EOF for unknown channel");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	489 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	490
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	491 channel->recveof = 1;
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	492 if (cbuf_getused(channel->writebuf) == 0
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	493 && (channel->extrabuf == NULL
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	494 \|\| 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	495 closewritefd(channel);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	496 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	497
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	498 TRACE(("leave recv_msg_channel_eof"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	499 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	500
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	501
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	502 /* 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	503 void recv_msg_channel_close() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	504
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	505 struct Channel * channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	506
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	507 TRACE(("enter recv_msg_channel_close"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	508
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	509 channel = getchannel();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	510 if (channel == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	511 /* disconnect ? */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	512 dropbear_exit("Close for unknown channel");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	513 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	514
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	515 channel->recveof = 1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	516 channel->recvclosed = 1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	517
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	518 if (channel->sentclosed) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	519 removechannel(channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	520 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	521
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	522 TRACE(("leave recv_msg_channel_close"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	523 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	524
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	525 /* 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	526 * channel close */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	527 static void removechannel(struct Channel * channel) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	528
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	529 TRACE(("enter removechannel"))
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	530 TRACE(("channel index is %d", channel->index))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	531
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	532 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	533 channel->writebuf = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	534
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	535 if (channel->extrabuf) {
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	536 cbuf_free(channel->extrabuf);
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	537 channel->extrabuf = NULL;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	538 }
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	539
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	540
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	541 /* close the FDs in case they haven't been done
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	542 * yet (ie they were shutdown etc */
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	543 close(channel->writefd);
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	544 close(channel->readfd);
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	545 close(channel->errfd);
2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	546
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	547 channel->typedata = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	548
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	549 deletechannel(channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	550
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	551 TRACE(("leave removechannel"))
4 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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	554 /* Remove a channel entry */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	555 static void deletechannel(struct Channel *channel) {
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 ses.channels[channel->index] = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	558 m_free(channel);
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	559 ses.chancount--;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	560
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	561 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	562
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	563
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	564 /* 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	565 * such as chansession or x11fwd */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	566 void recv_msg_channel_request() {
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 struct Channel *channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	569
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	570 TRACE(("enter recv_msg_channel_request"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	571
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	572 channel = getchannel();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	573 if (channel == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	574 /* disconnect ? */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	575 dropbear_exit("Unknown channel");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	576 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	577
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	578 if (channel->type->reqhandler) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	579 channel->type->reqhandler(channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	580 } else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	581 send_msg_channel_failure(channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	582 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	583
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	584 TRACE(("leave recv_msg_channel_request"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	585
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	586 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	587
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	588 /* 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	589 * channel_data packet to send.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	590 * 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	591 * 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	592 * exttype */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	593 static void send_msg_channel_data(struct Channel *channel, int isextended,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	594 unsigned int exttype) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	595
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	596 buffer *buf;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	597 int len;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	598 unsigned int maxlen;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	599 int fd;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	600
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	601 /* TRACE(("enter send_msg_channel_data"))
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	602 TRACE(("extended = %d type = %d", isextended, exttype))*/
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	603
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	604 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	605
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 221 diff changeset	606 dropbear_assert(!channel->sentclosed);
4 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 if (isextended) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	609 fd = channel->errfd;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	610 } else {
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	611 fd = channel->readfd;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	612 }
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 221 diff changeset	613 dropbear_assert(fd >= 0);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	614
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	615 maxlen = MIN(channel->transwindow, channel->transmaxpacket);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	616 /* -(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	617 * exttype if is extended */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	618 maxlen = MIN(maxlen,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	619 ses.writepayload->size - 1 - 4 - 4 - (isextended ? 4 : 0));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	620 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	621 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	622 return; /* the data will get written later */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	623 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	624
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	625 /* read the data */
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	626 TRACE(("maxlen %d", maxlen))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	627 buf = buf_new(maxlen);
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	628 TRACE(("buf pos %d data %x", buf->pos, buf->data))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	629 len = read(fd, buf_getwriteptr(buf, maxlen), maxlen);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	630 if (len <= 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	631 /* on error/eof, send eof */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	632 if (len == 0 \|\| errno != EINTR) {
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	633 closereadfd(channel, fd);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	634 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	635 buf_free(buf);
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	636 buf = NULL;
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	637 TRACE(("leave send_msg_channel_data: read err or EOF for fd %d",
2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	638 channel->index));
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	639 return;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	640 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	641 buf_incrlen(buf, len);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	642
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	643 buf_putbyte(ses.writepayload,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	644 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	645 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	646
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	647 if (isextended) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	648 buf_putint(ses.writepayload, exttype);
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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	651 buf_putstring(ses.writepayload, buf_getptr(buf, len), len);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	652 buf_free(buf);
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	653 buf = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	654
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	655 channel->transwindow -= len;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	656
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	657 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	658 TRACE(("leave send_msg_channel_data"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	659 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	660
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	661 /* We receive channel data */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	662 void recv_msg_channel_data() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	663
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	664 struct Channel *channel;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	665
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	666 channel = getchannel();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	667 if (channel == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	668 dropbear_exit("Unknown channel");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	669 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	670
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	671 common_recv_msg_channel_data(channel, channel->writefd, channel->writebuf);
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	672 }
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	673
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	674 /* 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	675 * for writing to the local file descriptor */
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	676 void common_recv_msg_channel_data(struct Channel *channel, int fd,
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	677 circbuffer * cbuf) {
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	678
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	679 unsigned int datalen;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	680 unsigned int maxdata;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	681 unsigned int buflen;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	682 unsigned int len;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	683
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	684 TRACE(("enter recv_msg_channel_data"))
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	685
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	686 if (channel->recveof) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	687 dropbear_exit("received data after eof");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	688 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	689
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	690 if (fd < 0) {
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	691 dropbear_exit("received data with bad writefd");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	692 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	693
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	694 datalen = buf_getint(ses.payload);
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
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	697 maxdata = cbuf_getavail(cbuf);
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	698
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	699 /* 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	700 * 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	701 * just die horribly */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	702 if (datalen > maxdata) {
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	703 dropbear_exit("Oversized packet");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	704 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	705
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	706 /* 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	707 * just "leave it for next time" like with writechannel, since this
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	708 * is payload data */
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	709 len = datalen;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	710 while (len > 0) {
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	711 buflen = cbuf_writelen(cbuf);
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	712 buflen = MIN(buflen, len);
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	713
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	714 memcpy(cbuf_writeptr(cbuf, buflen),
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	715 buf_getptr(ses.payload, buflen), buflen);
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	716 cbuf_incrwrite(cbuf, buflen);
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	717 buf_incrpos(ses.payload, buflen);
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	718 len -= buflen;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	719 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	720
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 221 diff changeset	721 dropbear_assert(channel->recvwindow >= datalen);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	722 channel->recvwindow -= datalen;
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 221 diff changeset	723 dropbear_assert(channel->recvwindow <= RECV_MAXWINDOW);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	724
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	725 TRACE(("leave recv_msg_channel_data"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	726 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	727
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	728 /* 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	729 * 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	730 * 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	731 void recv_msg_channel_window_adjust() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	732
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	733 struct Channel * channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	734 unsigned int incr;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	735
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	736 channel = getchannel();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	737 if (channel == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	738 dropbear_exit("Unknown channel");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	739 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	740
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	741 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	742 TRACE(("received window increment %d", incr))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	743 incr = MIN(incr, MAX_TRANS_WIN_INCR);
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 channel->transwindow += incr;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	746 channel->transwindow = MIN(channel->transwindow, MAX_TRANS_WINDOW);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	747
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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	750 /* 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	751 * end know */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	752 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	753 unsigned int incr) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	754
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	755 TRACE(("sending window adjust %d", incr))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	756 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	757
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	758 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	759 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	760 buf_putint(ses.writepayload, incr);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	761
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	762 encrypt_packet();
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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	765 /* 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	766 /* XXX server */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	767 void recv_msg_channel_open() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	768
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	769 unsigned char *type;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	770 unsigned int typelen;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	771 unsigned int remotechan, transwindow, transmaxpacket;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	772 struct Channel *channel;
7 425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	773 const struct ChanType **cp;
6 ab00ef513e97 Sorted out the first channel init issues. Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	774 const struct ChanType *chantype;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	775 unsigned int errtype = SSH_OPEN_UNKNOWN_CHANNEL_TYPE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	776 int ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	777
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	778
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	779 TRACE(("enter recv_msg_channel_open"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	780
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	781 /* get the packet contents */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	782 type = buf_getstring(ses.payload, &typelen);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	783
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	784 remotechan = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	785 transwindow = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	786 transwindow = MIN(transwindow, MAX_TRANS_WINDOW);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	787 transmaxpacket = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	788 transmaxpacket = MIN(transmaxpacket, MAX_TRANS_PAYLOAD_LEN);
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 /* figure what type of packet it is */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	791 if (typelen > MAX_NAME_LEN) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	792 goto failure;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	793 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	794
7 425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	795 /* 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	796 * 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	797 * this list and find the matching name */
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	798 for (cp = &ses.chantypes[0], chantype = (*cp);
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	799 chantype != NULL;
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	800 cp++, chantype = (*cp)) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	801 if (strcmp(type, chantype->name) == 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	802 break;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	803 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	804 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	805
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	806 if (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	807 TRACE(("No matching type for '%s'", type))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	808 goto failure;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	809 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	810
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	811 TRACE(("matched type '%s'", type))
7 425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	812
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	813 /* create the channel */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	814 channel = newchannel(remotechan, chantype, transwindow, transmaxpacket);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	815
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	816 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	817 TRACE(("newchannel returned NULL"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	818 goto failure;
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 if (channel->type->inithandler) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	822 ret = channel->type->inithandler(channel);
6 ab00ef513e97 Sorted out the first channel init issues. Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	823 if (ret > 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	824 if (ret == SSH_OPEN_IN_PROGRESS) {
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	825 /* We'll send the confirmation later */
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	826 goto cleanup;
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	827 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	828 errtype = ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	829 deletechannel(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	830 TRACE(("inithandler returned failure %d", ret))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	831 goto failure;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	832 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	833 }
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 /* success */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	836 send_msg_channel_open_confirmation(channel, channel->recvwindow,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	837 channel->recvmaxpacket);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	838 goto cleanup;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	839
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	840 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	841 TRACE(("recv_msg_channel_open failure"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	842 send_msg_channel_open_failure(remotechan, errtype, "", "");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	843
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	844 cleanup:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	845 m_free(type);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	846
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	847 TRACE(("leave recv_msg_channel_open"))
4 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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	850 /* Send a failure message */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	851 void send_msg_channel_failure(struct Channel *channel) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	852
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	853 TRACE(("enter send_msg_channel_failure"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	854 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	855
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	856 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_FAILURE);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	857 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	858
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	859 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	860 TRACE(("leave send_msg_channel_failure"))
4 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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	863 /* Send a success message */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	864 void send_msg_channel_success(struct Channel *channel) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	865
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	866 TRACE(("enter send_msg_channel_success"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	867 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	868
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	869 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_SUCCESS);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	870 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	871
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	872 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	873 TRACE(("leave send_msg_channel_success"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	874 }
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 /* 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	877 * code (usually resource shortage or unknown chan type) */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	878 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	879 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	880
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	881 TRACE(("enter send_msg_channel_open_failure"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	882 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	883
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	884 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	885 buf_putint(ses.writepayload, remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	886 buf_putint(ses.writepayload, reason);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	887 buf_putstring(ses.writepayload, text, strlen((char*)text));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	888 buf_putstring(ses.writepayload, lang, strlen((char*)lang));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	889
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	890 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	891 TRACE(("leave send_msg_channel_open_failure"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	892 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	893
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	894 /* 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	895 * allocated and the receive parameters */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	896 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	897 unsigned int recvwindow,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	898 unsigned int recvmaxpacket) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	899
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	900 TRACE(("enter send_msg_channel_open_confirmation"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	901 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	902
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	903 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	904 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	905 buf_putint(ses.writepayload, channel->index);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	906 buf_putint(ses.writepayload, recvwindow);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	907 buf_putint(ses.writepayload, recvmaxpacket);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	908
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	909 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	910 TRACE(("leave send_msg_channel_open_confirmation"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	911 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	912
156 8c2b3506f112 Rearrange preprocessor parts so that compilation with various options Matt Johnston <matt@ucc.asn.au> parents: 109 diff changeset	913 #if defined(USING_LISTENERS) \|\| defined(DROPBEAR_CLIENT)
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	914 /* 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	915 * 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	916 * 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	917 * 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	918 * DROPBEAR_SUCCESS is returned */
9 7f77962de998 - Reworked non-channel fd handling to listener.c Matt Johnston <matt@ucc.asn.au> parents: 7 diff changeset	919 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	920
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	921 struct Channel* chan;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	922
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	923 TRACE(("enter send_msg_channel_open_init()"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	924 chan = newchannel(0, type, 0, 0);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	925 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	926 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	927 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	928 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	929
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	930 /* set fd non-blocking */
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	931 setnonblocking(fd);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	932
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	933 chan->writefd = chan->readfd = fd;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	934 ses.maxfd = MAX(ses.maxfd, fd);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	935
243 0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	936 chan->await_open = 1;
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	937
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	938 /* now open the channel connection */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	939 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	940
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	941 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	942 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	943 buf_putint(ses.writepayload, chan->index);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	944 buf_putint(ses.writepayload, RECV_MAXWINDOW);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	945 buf_putint(ses.writepayload, RECV_MAXPACKET);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	946
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	947 TRACE(("leave send_msg_channel_open_init()"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	948 return DROPBEAR_SUCCESS;
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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	951 /* 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	952 * successful*/
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	953 void recv_msg_channel_open_confirmation() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	954
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	955 struct Channel * channel;
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	956 int ret;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	957
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	958 TRACE(("enter recv_msg_channel_open_confirmation"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	959
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	960 channel = getchannel();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	961 if (channel == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	962 dropbear_exit("Unknown channel");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	963 }
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 if (!channel->await_open) {
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	966 dropbear_exit("unexpected channel reply");
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	967 }
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	968 channel->await_open = 0;
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	969
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	970 channel->remotechan = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	971 channel->transwindow = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	972 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	973
187 c44df7123b0a compile fix when TRACE debugging is enabled Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	974 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	975 channel->remotechan, channel->index))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	976
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	977 /* Run the inithandler callback */
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	978 if (channel->type->inithandler) {
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	979 ret = channel->type->inithandler(channel);
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	980 if (ret > 0) {
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	981 removechannel(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	982 TRACE(("inithandler returned failure %d", ret))
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	983 }
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	984 }
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	985
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	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(("leave recv_msg_channel_open_confirmation"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	988 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	989
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	990 /* Notification that our channel open request failed */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	991 void recv_msg_channel_open_failure() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	992
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	993 struct Channel * channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	994
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	995 channel = getchannel();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	996 if (channel == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	997 dropbear_exit("Unknown channel");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	998 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	999
243 0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1000 if (!channel->await_open) {
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1001 dropbear_exit("unexpected channel reply");
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1002 }
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1003 channel->await_open = 0;
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1004
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1005 removechannel(channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1006 }
156 8c2b3506f112 Rearrange preprocessor parts so that compilation with various options Matt Johnston <matt@ucc.asn.au> parents: 109 diff changeset	1007 #endif /* USING_LISTENERS */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1008
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1009 /* close a stdout/stderr fd */
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	1010 static void closereadfd(struct Channel * channel, int fd) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1011
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	1012 /* don't close it if it is the same as writefd,
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	1013 * unless writefd is already set -1 */
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	1014 TRACE(("enter closereadfd"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1015 closechanfd(channel, fd, 0);
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	1016 TRACE(("leave closereadfd"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1017 }
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 /* close a stdin fd */
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	1020 static void closewritefd(struct Channel * channel) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1021
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	1022 TRACE(("enter closewritefd"))
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	1023 closechanfd(channel, channel->writefd, 1);
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	1024 TRACE(("leave closewritefd"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1025 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1026
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1027 /* close a fd, how is 0 for stdout/stderr, 1 for stdin */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1028 static void closechanfd(struct Channel *channel, int fd, int how) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1029
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1030 int closein = 0, closeout = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1031
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1032 /* XXX server */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1033 if (channel->type->sepfds) {
221 a4b93a2ed879 * close a file descriptor after we've shutdown() both sides, to avoid a leak Matt Johnston <matt@ucc.asn.au> parents: 187 diff changeset	1034 TRACE(("shutdown((%d), %d)", fd, how))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1035 shutdown(fd, how);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1036 if (how == 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1037 closeout = 1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1038 } else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1039 closein = 1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1040 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1041 } else {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1042 close(fd);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1043 closein = closeout = 1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1044 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1045
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	1046 if (closeout && fd == channel->readfd) {
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	1047 channel->readfd = FD_CLOSED;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1048 }
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	1049 if (closeout && (channel->extrabuf == NULL) && (fd == channel->errfd)) {
2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	1050 channel->errfd = FD_CLOSED;
2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	1051 }
2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	1052
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	1053 if (closein && fd == channel->writefd) {
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	1054 channel->writefd = FD_CLOSED;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1055 }
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	1056 if (closein && (channel->extrabuf != NULL) && (fd == channel->errfd)) {
2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	1057 channel->errfd = FD_CLOSED;
2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	1058 }
221 a4b93a2ed879 * close a file descriptor after we've shutdown() both sides, to avoid a leak Matt Johnston <matt@ucc.asn.au> parents: 187 diff changeset	1059
a4b93a2ed879 * close a file descriptor after we've shutdown() both sides, to avoid a leak Matt Johnston <matt@ucc.asn.au> parents: 187 diff changeset	1060 /* if we called shutdown on it and all references are gone, then we
a4b93a2ed879 * close a file descriptor after we've shutdown() both sides, to avoid a leak Matt Johnston <matt@ucc.asn.au> parents: 187 diff changeset	1061 * need to close() it to stop it lingering */
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	1062 if (channel->type->sepfds && channel->readfd == FD_CLOSED
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	1063 && channel->writefd == FD_CLOSED && channel->errfd == FD_CLOSED) {
221 a4b93a2ed879 * close a file descriptor after we've shutdown() both sides, to avoid a leak Matt Johnston <matt@ucc.asn.au> parents: 187 diff changeset	1064 close(fd);
a4b93a2ed879 * close a file descriptor after we've shutdown() both sides, to avoid a leak Matt Johnston <matt@ucc.asn.au> parents: 187 diff changeset	1065 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1066 }

Mercurial > dropbear

annotate common-channel.c @ 330:5488db2e9e4e