dropbear: common-channel.c annotate

annotate common-channel.c @ 1034:107b013e9d9d fastopen

avoid some warnings

author	Matt Johnston <matt@ucc.asn.au>
date	Fri, 20 Feb 2015 23:43:59 +0800
parents	0da8ba489c23
children	01eea88963f3

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"
449 3e6c536bc023 Add -W <windowsize> argument and document it. Matt Johnston <matt@ucc.asn.au> parents: 448 diff changeset	37 #include "runopts.h"
1032 0da8ba489c23 Move generic network routines to netio.c Matt Johnston <matt@ucc.asn.au> parents: 1025 diff changeset	38 #include "netio.h"
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	39
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	40 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	41 const unsigned char text, const unsigned char lang);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	42 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	43 unsigned int recvwindow,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	44 unsigned int recvmaxpacket);
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	45 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	46 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	47 unsigned int incr);
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	48 static void send_msg_channel_data(struct Channel *channel, int isextended);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	49 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	50 static void send_msg_channel_close(struct Channel *channel);
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	51 static void remove_channel(struct Channel *channel);
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	52 static unsigned int write_pending(struct Channel * channel);
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	53 static void check_close(struct Channel *channel);
78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	54 static void close_chan_fd(struct Channel *channel, int fd, int how);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	55
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	56 #define FD_UNINIT (-2)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	57 #define FD_CLOSED (-1)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	58
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	59 #define ERRFD_IS_READ(channel) ((channel)->extrabuf == NULL)
8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	60 #define ERRFD_IS_WRITE(channel) (!ERRFD_IS_READ(channel))
8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	61
906 4696755c4cac A few fixes for cases where compression increases payload sizes, and Matt Johnston <matt@ucc.asn.au> parents: 896 diff changeset	62 /* allow space for:
4696755c4cac A few fixes for cases where compression increases payload sizes, and Matt Johnston <matt@ucc.asn.au> parents: 896 diff changeset	63 * 1 byte byte SSH_MSG_CHANNEL_DATA
4696755c4cac A few fixes for cases where compression increases payload sizes, and Matt Johnston <matt@ucc.asn.au> parents: 896 diff changeset	64 * 4 bytes uint32 recipient channel
4696755c4cac A few fixes for cases where compression increases payload sizes, and Matt Johnston <matt@ucc.asn.au> parents: 896 diff changeset	65 * 4 bytes string data
4696755c4cac A few fixes for cases where compression increases payload sizes, and Matt Johnston <matt@ucc.asn.au> parents: 896 diff changeset	66 */
4696755c4cac A few fixes for cases where compression increases payload sizes, and Matt Johnston <matt@ucc.asn.au> parents: 896 diff changeset	67 #define RECV_MAX_CHANNEL_DATA_LEN (RECV_MAX_PAYLOAD_LEN-(1+4+4))
4696755c4cac A few fixes for cases where compression increases payload sizes, and Matt Johnston <matt@ucc.asn.au> parents: 896 diff changeset	68
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	69 /* Initialise all the channels */
6 ab00ef513e97 Sorted out the first channel init issues. Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	70 void chaninitialise(const struct ChanType *chantypes[]) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	71
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	72 /* 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	73 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	74 ses.chansize = 1;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	75 ses.channels[0] = NULL;
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	76 ses.chancount = 0;
4 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 ses.chantypes = chantypes;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	79
9 7f77962de998 - Reworked non-channel fd handling to listener.c Matt Johnston <matt@ucc.asn.au> parents: 7 diff changeset	80 #ifdef USING_LISTENERS
7f77962de998 - Reworked non-channel fd handling to listener.c Matt Johnston <matt@ucc.asn.au> parents: 7 diff changeset	81 listeners_initialise();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	82 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	83
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	84 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	85
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	86 /* Clean up channels, freeing allocated memory */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	87 void chancleanup() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	88
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	89 unsigned int i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	90
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	91 TRACE(("enter chancleanup"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	92 for (i = 0; i < ses.chansize; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	93 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	94 TRACE(("channel %d closing", i))
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	95 remove_channel(ses.channels[i]);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	96 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	97 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	98 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	99 TRACE(("leave chancleanup"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	100 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	101
707 564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	102 static void
564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	103 chan_initwritebuf(struct Channel *channel)
564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	104 {
709 abd99ecd7ec2 use an empty writebuf rather than a NULL one Matt Johnston <matt@ucc.asn.au> parents: 707 diff changeset	105 dropbear_assert(channel->writebuf->size == 0 && channel->recvwindow == 0);
abd99ecd7ec2 use an empty writebuf rather than a NULL one Matt Johnston <matt@ucc.asn.au> parents: 707 diff changeset	106 cbuf_free(channel->writebuf);
707 564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	107 channel->writebuf = cbuf_new(opts.recv_window);
564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	108 channel->recvwindow = opts.recv_window;
564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	109 }
564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	110
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	111 /* 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	112 /* 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	113 * 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	114 * all be set to 0 */
707 564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	115 static struct Channel* newchannel(unsigned int remotechan,
7 425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	116 const struct ChanType *type,
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	117 unsigned int transwindow, unsigned int transmaxpacket) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	118
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	119 struct Channel * newchan;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	120 unsigned int i, j;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	121
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	122 TRACE(("enter newchannel"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	123
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	124 /* first see if we can use existing channels */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	125 for (i = 0; i < ses.chansize; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	126 if (ses.channels[i] == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	127 break;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	128 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	129 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	130
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	131 /* otherwise extend the list */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	132 if (i == ses.chansize) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	133 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	134 TRACE(("leave newchannel: max chans reached"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	135 return NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	136 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	137
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	138 /* extend the channels */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	139 ses.channels = (struct Channel**)m_realloc(ses.channels,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	140 (ses.chansize+CHAN_EXTEND_SIZE)sizeof(struct Channel));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	141
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	142 ses.chansize += CHAN_EXTEND_SIZE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	143
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	144 /* set the new channels to null */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	145 for (j = i; j < ses.chansize; j++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	146 ses.channels[j] = NULL;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	147 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	148
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	149 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	150
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	151 newchan = (struct Channel*)m_malloc(sizeof(struct Channel));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	152 newchan->type = type;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	153 newchan->index = i;
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	154 newchan->sent_close = newchan->recv_close = 0;
78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	155 newchan->sent_eof = newchan->recv_eof = 0;
652 17962b2a6b8f - Make sure we don't use channel-specific data after it has been freed Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	156 newchan->close_handler_done = 0;
4 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 newchan->remotechan = remotechan;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	159 newchan->transwindow = transwindow;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	160 newchan->transmaxpacket = transmaxpacket;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	161
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	162 newchan->typedata = NULL;
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	163 newchan->writefd = FD_UNINIT;
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	164 newchan->readfd = FD_UNINIT;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	165 newchan->errfd = FD_CLOSED; /* this isn't always set to start with */
243 0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	166 newchan->await_open = 0;
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	167 newchan->flushing = 0;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	168
709 abd99ecd7ec2 use an empty writebuf rather than a NULL one Matt Johnston <matt@ucc.asn.au> parents: 707 diff changeset	169 newchan->writebuf = cbuf_new(0); /* resized later by chan_initwritebuf */
707 564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	170 newchan->recvwindow = 0;
564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	171
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	172 newchan->extrabuf = NULL; /* The user code can set it up */
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	173 newchan->recvdonelen = 0;
906 4696755c4cac A few fixes for cases where compression increases payload sizes, and Matt Johnston <matt@ucc.asn.au> parents: 896 diff changeset	174 newchan->recvmaxpacket = RECV_MAX_CHANNEL_DATA_LEN;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	175
941 5daedffd0769 Set tcp priority as follows: Matt Johnston <matt@ucc.asn.au> parents: 938 diff changeset	176 newchan->prio = DROPBEAR_CHANNEL_PRIO_EARLY; /* inithandler sets it */
5daedffd0769 Set tcp priority as follows: Matt Johnston <matt@ucc.asn.au> parents: 938 diff changeset	177
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	178 ses.channels[i] = newchan;
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	179 ses.chancount++;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	180
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	181 TRACE(("leave newchannel"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	182
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	183 return newchan;
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
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	186 /* Returns the channel structure corresponding to the channel in the current
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	187 * data packet (ses.payload must be positioned appropriately).
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	188 * A valid channel is always returns, it will fail fatally with an unknown
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	189 * channel */
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	190 static struct Channel* getchannel_msg(const char* kind) {
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	191
161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	192 unsigned int chan;
161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	193
161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	194 chan = buf_getint(ses.payload);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	195 if (chan >= ses.chansize \|\| ses.channels[chan] == NULL) {
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	196 if (kind) {
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	197 dropbear_exit("%s for unknown channel %d", kind, chan);
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	198 } else {
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	199 dropbear_exit("Unknown channel %d", chan);
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	200 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	201 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	202 return ses.channels[chan];
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
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	205 struct Channel* getchannel() {
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	206 return getchannel_msg(NULL);
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	207 }
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	208
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	209 /* 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	210 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	211
936 d93a6bcf616f Improve handling lots of concurrent forwarded connections. Increase Matt Johnston <matt@ucc.asn.au> parents: 906 diff changeset	212 /* Listeners such as TCP, X11, agent-auth */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	213 struct Channel *channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	214 unsigned int i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	215
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	216 /* foreach channel */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	217 for (i = 0; i < ses.chansize; i++) {
936 d93a6bcf616f Improve handling lots of concurrent forwarded connections. Increase Matt Johnston <matt@ucc.asn.au> parents: 906 diff changeset	218 /* Close checking only needs to occur for channels that had IO events */
d93a6bcf616f Improve handling lots of concurrent forwarded connections. Increase Matt Johnston <matt@ucc.asn.au> parents: 906 diff changeset	219 int do_check_close = 0;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	220
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	221 channel = ses.channels[i];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	222 if (channel == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	223 /* only process in-use channels */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	224 continue;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	225 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	226
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	227 /* read data and send it over the wire */
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	228 if (channel->readfd >= 0 && FD_ISSET(channel->readfd, readfds)) {
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	229 TRACE(("send normal readfd"))
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	230 send_msg_channel_data(channel, 0);
936 d93a6bcf616f Improve handling lots of concurrent forwarded connections. Increase Matt Johnston <matt@ucc.asn.au> parents: 906 diff changeset	231 do_check_close = 1;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	232 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	233
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	234 /* read stderr data and send it over the wire */
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	235 if (ERRFD_IS_READ(channel) && channel->errfd >= 0
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	236 && FD_ISSET(channel->errfd, readfds)) {
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	237 TRACE(("send normal errfd"))
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	238 send_msg_channel_data(channel, 1);
936 d93a6bcf616f Improve handling lots of concurrent forwarded connections. Increase Matt Johnston <matt@ucc.asn.au> parents: 906 diff changeset	239 do_check_close = 1;
395 dc37bd8563e8 disapproval of revision '5fdf69ca60d1683cdd9f4c2595134bed26394834' Matt Johnston <matt@ucc.asn.au> parents: 394 diff changeset	240 }
dc37bd8563e8 disapproval of revision '5fdf69ca60d1683cdd9f4c2595134bed26394834' Matt Johnston <matt@ucc.asn.au> parents: 394 diff changeset	241
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	242 /* 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	243 if (channel->writefd >= 0 && FD_ISSET(channel->writefd, writefds)) {
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	244 writechannel(channel, channel->writefd, channel->writebuf);
936 d93a6bcf616f Improve handling lots of concurrent forwarded connections. Increase Matt Johnston <matt@ucc.asn.au> parents: 906 diff changeset	245 do_check_close = 1;
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	246 }
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	247
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	248 /* stderr for client mode */
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	249 if (ERRFD_IS_WRITE(channel)
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	250 && 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	251 writechannel(channel, channel->errfd, channel->extrabuf);
936 d93a6bcf616f Improve handling lots of concurrent forwarded connections. Increase Matt Johnston <matt@ucc.asn.au> parents: 906 diff changeset	252 do_check_close = 1;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	253 }
955 36eacc322e00 Make sure the check_close() handler runs when a server child process exits Matt Johnston <matt@ucc.asn.au> parents: 944 diff changeset	254
36eacc322e00 Make sure the check_close() handler runs when a server child process exits Matt Johnston <matt@ucc.asn.au> parents: 944 diff changeset	255 if (ses.channel_signal_pending) {
36eacc322e00 Make sure the check_close() handler runs when a server child process exits Matt Johnston <matt@ucc.asn.au> parents: 944 diff changeset	256 /* SIGCHLD can change channel state for server sessions */
36eacc322e00 Make sure the check_close() handler runs when a server child process exits Matt Johnston <matt@ucc.asn.au> parents: 944 diff changeset	257 do_check_close = 1;
36eacc322e00 Make sure the check_close() handler runs when a server child process exits Matt Johnston <matt@ucc.asn.au> parents: 944 diff changeset	258 ses.channel_signal_pending = 0;
36eacc322e00 Make sure the check_close() handler runs when a server child process exits Matt Johnston <matt@ucc.asn.au> parents: 944 diff changeset	259 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	260
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	261 /* handle any channel closing etc */
936 d93a6bcf616f Improve handling lots of concurrent forwarded connections. Increase Matt Johnston <matt@ucc.asn.au> parents: 906 diff changeset	262 if (do_check_close) {
d93a6bcf616f Improve handling lots of concurrent forwarded connections. Increase Matt Johnston <matt@ucc.asn.au> parents: 906 diff changeset	263 check_close(channel);
d93a6bcf616f Improve handling lots of concurrent forwarded connections. Increase Matt Johnston <matt@ucc.asn.au> parents: 906 diff changeset	264 }
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	265 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	266
9 7f77962de998 - Reworked non-channel fd handling to listener.c Matt Johnston <matt@ucc.asn.au> parents: 7 diff changeset	267 #ifdef USING_LISTENERS
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	268 handle_listeners(readfds);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	269 #endif
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
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	273 /* Returns true if there is data remaining to be written to stdin or
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	274 * stderr of a channel's endpoint. */
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	275 static unsigned int write_pending(struct Channel * channel) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	276
709 abd99ecd7ec2 use an empty writebuf rather than a NULL one Matt Johnston <matt@ucc.asn.au> parents: 707 diff changeset	277 if (channel->writefd >= 0 && cbuf_getused(channel->writebuf) > 0) {
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	278 return 1;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	279 } else if (channel->errfd >= 0 && channel->extrabuf &&
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	280 cbuf_getused(channel->extrabuf) > 0) {
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	281 return 1;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	282 }
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	283 return 0;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	284 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	285
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	286
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	287 /* EOF/close handling */
78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	288 static void check_close(struct Channel *channel) {
467 0871a0b89f7c Don't return until the shell has quit. This will ensure that an exit status Matt Johnston <matt@ucc.asn.au> parents: 449 diff changeset	289 int close_allowed = 0;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	290
731 9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 722 diff changeset	291 TRACE2(("check_close: writefd %d, readfd %d, errfd %d, sent_close %d, recv_close %d",
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	292 channel->writefd, channel->readfd,
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	293 channel->errfd, channel->sent_close, channel->recv_close))
731 9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 722 diff changeset	294 TRACE2(("writebuf size %d extrabuf size %d",
707 564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	295 channel->writebuf ? cbuf_getused(channel->writebuf) : 0,
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	296 channel->extrabuf ? cbuf_getused(channel->extrabuf) : 0))
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	297
652 17962b2a6b8f - Make sure we don't use channel-specific data after it has been freed Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	298 if (!channel->flushing
17962b2a6b8f - Make sure we don't use channel-specific data after it has been freed Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	299 && !channel->close_handler_done
17962b2a6b8f - Make sure we don't use channel-specific data after it has been freed Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	300 && channel->type->check_close
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	301 && channel->type->check_close(channel))
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	302 {
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	303 channel->flushing = 1;
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	304 }
467 0871a0b89f7c Don't return until the shell has quit. This will ensure that an exit status Matt Johnston <matt@ucc.asn.au> parents: 449 diff changeset	305
504 950c38b854a1 Don't use // style comments Matt Johnston <matt@ucc.asn.au> parents: 495 diff changeset	306 /* if a type-specific check_close is defined we will only exit
950c38b854a1 Don't use // style comments Matt Johnston <matt@ucc.asn.au> parents: 495 diff changeset	307 once that has been triggered. this is only used for a server "session"
950c38b854a1 Don't use // style comments Matt Johnston <matt@ucc.asn.au> parents: 495 diff changeset	308 channel, to ensure that the shell has exited (and the exit status
950c38b854a1 Don't use // style comments Matt Johnston <matt@ucc.asn.au> parents: 495 diff changeset	309 retrieved) before we close things up. */
467 0871a0b89f7c Don't return until the shell has quit. This will ensure that an exit status Matt Johnston <matt@ucc.asn.au> parents: 449 diff changeset	310 if (!channel->type->check_close
652 17962b2a6b8f - Make sure we don't use channel-specific data after it has been freed Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	311 \|\| channel->close_handler_done
17962b2a6b8f - Make sure we don't use channel-specific data after it has been freed Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	312 \|\| channel->type->check_close(channel)) {
467 0871a0b89f7c Don't return until the shell has quit. This will ensure that an exit status Matt Johnston <matt@ucc.asn.au> parents: 449 diff changeset	313 close_allowed = 1;
0871a0b89f7c Don't return until the shell has quit. This will ensure that an exit status Matt Johnston <matt@ucc.asn.au> parents: 449 diff changeset	314 }
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	315
467 0871a0b89f7c Don't return until the shell has quit. This will ensure that an exit status Matt Johnston <matt@ucc.asn.au> parents: 449 diff changeset	316 if (channel->recv_close && !write_pending(channel) && close_allowed) {
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	317 if (!channel->sent_close) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	318 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	319 send_msg_channel_close(channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	320 }
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	321 remove_channel(channel);
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	322 return;
397 2908122e9eed disapproval of revision '1250b8af44b62d8f4fe0f8d9fc7e7a1cc34e7e1c' Matt Johnston <matt@ucc.asn.au> parents: 396 diff changeset	323 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	324
815 35183e8a7851 Improve EOF handling for half-close. Patch from Catalin Patulea Matt Johnston <matt@ucc.asn.au> parents: 770 diff changeset	325 if ((channel->recv_eof && !write_pending(channel))
35183e8a7851 Improve EOF handling for half-close. Patch from Catalin Patulea Matt Johnston <matt@ucc.asn.au> parents: 770 diff changeset	326 /* have a server "session" and child has exited */
35183e8a7851 Improve EOF handling for half-close. Patch from Catalin Patulea Matt Johnston <matt@ucc.asn.au> parents: 770 diff changeset	327 \|\| (channel->type->check_close && close_allowed)) {
364 90cb290836de Passes most test cases now Matt Johnston <matt@ucc.asn.au> parents: 363 diff changeset	328 close_chan_fd(channel, channel->writefd, SHUT_WR);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	329 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	330
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	331 /* Special handling for flushing read data after an exit. We
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	332 read regardless of whether the select FD was set,
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	333 and if there isn't data available, the channel will get closed. */
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	334 if (channel->flushing) {
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	335 TRACE(("might send data, flushing"))
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	336 if (channel->readfd >= 0 && channel->transwindow > 0) {
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	337 TRACE(("send data readfd"))
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	338 send_msg_channel_data(channel, 0);
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	339 }
439 ab370c629d36 Fix a stupid bug s/readfd/errfd/ affecting channel close on child exit Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	340 if (ERRFD_IS_READ(channel) && channel->errfd >= 0
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	341 && channel->transwindow > 0) {
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	342 TRACE(("send data errfd"))
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	343 send_msg_channel_data(channel, 1);
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	344 }
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	345 }
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	346
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	347 /* If we're not going to send any more data, send EOF */
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	348 if (!channel->sent_eof
365 49fcc9875045 Remove accidentally removed block (making sure to close the channel). Matt Johnston <matt@ucc.asn.au> parents: 364 diff changeset	349 && channel->readfd == FD_CLOSED
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	350 && (ERRFD_IS_WRITE(channel) \|\| channel->errfd == FD_CLOSED)) {
397 2908122e9eed disapproval of revision '1250b8af44b62d8f4fe0f8d9fc7e7a1cc34e7e1c' Matt Johnston <matt@ucc.asn.au> parents: 396 diff changeset	351 send_msg_channel_eof(channel);
2908122e9eed disapproval of revision '1250b8af44b62d8f4fe0f8d9fc7e7a1cc34e7e1c' Matt Johnston <matt@ucc.asn.au> parents: 396 diff changeset	352 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	353
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	354 /* And if we can't receive any more data from them either, close up */
467 0871a0b89f7c Don't return until the shell has quit. This will ensure that an exit status Matt Johnston <matt@ucc.asn.au> parents: 449 diff changeset	355 if (channel->readfd == FD_CLOSED
815 35183e8a7851 Improve EOF handling for half-close. Patch from Catalin Patulea Matt Johnston <matt@ucc.asn.au> parents: 770 diff changeset	356 && channel->writefd == FD_CLOSED
423 b2b67cfcd66e - Fix bug in child-exit handling where the wrong pid was being matched. Matt Johnston <matt@ucc.asn.au> parents: 416 diff changeset	357 && (ERRFD_IS_WRITE(channel) \|\| channel->errfd == FD_CLOSED)
467 0871a0b89f7c Don't return until the shell has quit. This will ensure that an exit status Matt Johnston <matt@ucc.asn.au> parents: 449 diff changeset	358 && !channel->sent_close
0871a0b89f7c Don't return until the shell has quit. This will ensure that an exit status Matt Johnston <matt@ucc.asn.au> parents: 449 diff changeset	359 && close_allowed
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	360 && !write_pending(channel)) {
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	361 TRACE(("sending close, readfd is closed"))
397 2908122e9eed disapproval of revision '1250b8af44b62d8f4fe0f8d9fc7e7a1cc34e7e1c' Matt Johnston <matt@ucc.asn.au> parents: 396 diff changeset	362 send_msg_channel_close(channel);
4 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 }
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 /* 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	367 * 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	368 * 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	369 * function */
1025 02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 970 diff changeset	370 void channel_connect_done(int result, int sock, void* user_data, const char* UNUSED(errstring)) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	371
1025 02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 970 diff changeset	372 struct Channel *channel = user_data;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	373
1025 02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 970 diff changeset	374 TRACE(("enter channel_connect_done"))
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 970 diff changeset	375
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 970 diff changeset	376 if (result == DROPBEAR_SUCCESS)
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 970 diff changeset	377 {
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 970 diff changeset	378 channel->readfd = channel->writefd = sock;
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 970 diff changeset	379 channel->conn_pending = NULL;
707 564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	380 chan_initwritebuf(channel);
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	381 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	382 channel->recvmaxpacket);
1025 02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 970 diff changeset	383 TRACE(("leave channel_connect_done: success"))
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 970 diff changeset	384 }
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 970 diff changeset	385 else
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 970 diff changeset	386 {
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 970 diff changeset	387 send_msg_channel_open_failure(channel->remotechan,
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 970 diff changeset	388 SSH_OPEN_CONNECT_FAILED, "", "");
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 970 diff changeset	389 remove_channel(channel);
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 970 diff changeset	390 TRACE(("leave check_in_progress: fail"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	391 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	392 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	393
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	394
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	395 /* 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	396 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	397
652 17962b2a6b8f - Make sure we don't use channel-specific data after it has been freed Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	398 TRACE(("enter send_msg_channel_close %p", channel))
17962b2a6b8f - Make sure we don't use channel-specific data after it has been freed Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	399 if (channel->type->closehandler
17962b2a6b8f - Make sure we don't use channel-specific data after it has been freed Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	400 && !channel->close_handler_done) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	401 channel->type->closehandler(channel);
652 17962b2a6b8f - Make sure we don't use channel-specific data after it has been freed Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	402 channel->close_handler_done = 1;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	403 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	404
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	405 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	406
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	407 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_CLOSE);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	408 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	409
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	410 encrypt_packet();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	411
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	412 channel->sent_eof = 1;
78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	413 channel->sent_close = 1;
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	414 close_chan_fd(channel, channel->readfd, SHUT_RD);
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	415 close_chan_fd(channel, channel->errfd, SHUT_RDWR);
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	416 close_chan_fd(channel, channel->writefd, SHUT_WR);
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	417 TRACE(("leave send_msg_channel_close"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	418 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	419
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	420 /* call this when trans/eof channels are closed */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	421 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	422
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	423 TRACE(("enter send_msg_channel_eof"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	424 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	425
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	426 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_EOF);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	427 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	428
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	429 encrypt_packet();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	430
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	431 channel->sent_eof = 1;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	432
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	433 TRACE(("leave send_msg_channel_eof"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	434 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	435
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	436 /* 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	437 * 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	438 * possible */
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	439 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	440
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	441 int len, maxlen;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	442
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	443 TRACE(("enter writechannel fd %d", fd))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	444
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	445 maxlen = cbuf_readlen(cbuf);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	446
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	447 /* Write the data out */
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	448 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	449 if (len <= 0) {
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	450 TRACE(("errno %d len %d", errno, len))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	451 if (len < 0 && errno != EINTR) {
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	452 close_chan_fd(channel, fd, SHUT_WR);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	453 }
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	454 TRACE(("leave writechannel: len <= 0"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	455 return;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	456 }
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	457 TRACE(("writechannel wrote %d", len))
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	458
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	459 cbuf_incrread(cbuf, len);
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	460 channel->recvdonelen += len;
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	461
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	462 /* Window adjust handling */
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	463 if (channel->recvdonelen >= RECV_WINDOWEXTEND) {
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	464 /* Set it back to max window */
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	465 send_msg_channel_window_adjust(channel, channel->recvdonelen);
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	466 channel->recvwindow += channel->recvdonelen;
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	467 channel->recvdonelen = 0;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	468 }
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	469
449 3e6c536bc023 Add -W <windowsize> argument and document it. Matt Johnston <matt@ucc.asn.au> parents: 448 diff changeset	470 dropbear_assert(channel->recvwindow <= opts.recv_window);
709 abd99ecd7ec2 use an empty writebuf rather than a NULL one Matt Johnston <matt@ucc.asn.au> parents: 707 diff changeset	471 dropbear_assert(channel->recvwindow <= cbuf_getavail(channel->writebuf));
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 221 diff changeset	472 dropbear_assert(channel->extrabuf == NULL \|\|
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	473 channel->recvwindow <= cbuf_getavail(channel->extrabuf));
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	474
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	475 TRACE(("leave writechannel"))
4 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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	478 /* 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	479 * 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	480 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	481
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	482 unsigned int i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	483 struct Channel * channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	484
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	485 for (i = 0; i < ses.chansize; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	486
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	487 channel = ses.channels[i];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	488 if (channel == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	489 continue;
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
896 a1a97e98b0c1 Read (and enqueue) packets from interactive input even when Matt Johnston <matt@ucc.asn.au> parents: 815 diff changeset	492 /* Stuff to put over the wire.
a1a97e98b0c1 Read (and enqueue) packets from interactive input even when Matt Johnston <matt@ucc.asn.au> parents: 815 diff changeset	493 Avoid queueing data to send if we're in the middle of a
a1a97e98b0c1 Read (and enqueue) packets from interactive input even when Matt Johnston <matt@ucc.asn.au> parents: 815 diff changeset	494 key re-exchange (!dataallowed), but still read from the
a1a97e98b0c1 Read (and enqueue) packets from interactive input even when Matt Johnston <matt@ucc.asn.au> parents: 815 diff changeset	495 FD if there's the possibility of "~."" to kill an
a1a97e98b0c1 Read (and enqueue) packets from interactive input even when Matt Johnston <matt@ucc.asn.au> parents: 815 diff changeset	496 interactive session (the read_mangler) */
a1a97e98b0c1 Read (and enqueue) packets from interactive input even when Matt Johnston <matt@ucc.asn.au> parents: 815 diff changeset	497 if (channel->transwindow > 0
a1a97e98b0c1 Read (and enqueue) packets from interactive input even when Matt Johnston <matt@ucc.asn.au> parents: 815 diff changeset	498 && (ses.dataallowed \|\| channel->read_mangler)) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	499
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	500 if (channel->readfd >= 0) {
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	501 FD_SET(channel->readfd, readfds);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	502 }
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	503
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	504 if (ERRFD_IS_READ(channel) && channel->errfd >= 0) {
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	505 FD_SET(channel->errfd, readfds);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	506 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	507 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	508
397 2908122e9eed disapproval of revision '1250b8af44b62d8f4fe0f8d9fc7e7a1cc34e7e1c' Matt Johnston <matt@ucc.asn.au> parents: 396 diff changeset	509 /* Stuff from the wire */
1025 02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 970 diff changeset	510 if (channel->writefd >= 0 && cbuf_getused(channel->writebuf) > 0) {
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	511 FD_SET(channel->writefd, writefds);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	512 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	513
433 c216212001fc Fix for -pedantic -ansi compilation, change // to /*/, plus some signedness Matt Johnston <matt@ucc.asn.au>* parents: 423 diff changeset	514 if (ERRFD_IS_WRITE(channel) && channel->errfd >= 0
707 564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	515 && 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	516 FD_SET(channel->errfd, writefds);
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	517 }
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	518
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	519 } /* foreach channel */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	520
9 7f77962de998 - Reworked non-channel fd handling to listener.c Matt Johnston <matt@ucc.asn.au> parents: 7 diff changeset	521 #ifdef USING_LISTENERS
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	522 set_listener_fds(readfds);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	523 #endif
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 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	526
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	527 /* 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	528 * 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	529 * etc) FD is also EOF */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	530 void recv_msg_channel_eof() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	531
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	532 struct Channel * channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	533
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	534 TRACE(("enter recv_msg_channel_eof"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	535
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	536 channel = getchannel_msg("EOF");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	537
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	538 channel->recv_eof = 1;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	539
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	540 check_close(channel);
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	541 TRACE(("leave recv_msg_channel_eof"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	542 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	543
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	544
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	545 /* 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	546 void recv_msg_channel_close() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	547
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	548 struct Channel * channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	549
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	550 TRACE(("enter recv_msg_channel_close"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	551
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	552 channel = getchannel_msg("Close");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	553
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	554 channel->recv_eof = 1;
78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	555 channel->recv_close = 1;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	556
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	557 check_close(channel);
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	558 TRACE(("leave recv_msg_channel_close"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	559 }
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 /* 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	562 * channel close */
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	563 static void remove_channel(struct Channel * channel) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	564
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	565 TRACE(("enter remove_channel"))
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	566 TRACE(("channel index is %d", channel->index))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	567
709 abd99ecd7ec2 use an empty writebuf rather than a NULL one Matt Johnston <matt@ucc.asn.au> parents: 707 diff changeset	568 cbuf_free(channel->writebuf);
abd99ecd7ec2 use an empty writebuf rather than a NULL one Matt Johnston <matt@ucc.asn.au> parents: 707 diff changeset	569 channel->writebuf = NULL;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	570
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	571 if (channel->extrabuf) {
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	572 cbuf_free(channel->extrabuf);
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	573 channel->extrabuf = NULL;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	574 }
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	575
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	576
938 c88dce72f6d2 Make sure client exit messages don't get lost Matt Johnston <matt@ucc.asn.au> parents: 937 diff changeset	577 if (IS_DROPBEAR_SERVER \|\| (channel->writefd != STDOUT_FILENO)) {
c88dce72f6d2 Make sure client exit messages don't get lost Matt Johnston <matt@ucc.asn.au> parents: 937 diff changeset	578 /* close the FDs in case they haven't been done
c88dce72f6d2 Make sure client exit messages don't get lost Matt Johnston <matt@ucc.asn.au> parents: 937 diff changeset	579 * yet (they might have been shutdown etc) */
c88dce72f6d2 Make sure client exit messages don't get lost Matt Johnston <matt@ucc.asn.au> parents: 937 diff changeset	580 TRACE(("CLOSE writefd %d", channel->writefd))
c88dce72f6d2 Make sure client exit messages don't get lost Matt Johnston <matt@ucc.asn.au> parents: 937 diff changeset	581 close(channel->writefd);
c88dce72f6d2 Make sure client exit messages don't get lost Matt Johnston <matt@ucc.asn.au> parents: 937 diff changeset	582 TRACE(("CLOSE readfd %d", channel->readfd))
c88dce72f6d2 Make sure client exit messages don't get lost Matt Johnston <matt@ucc.asn.au> parents: 937 diff changeset	583 close(channel->readfd);
c88dce72f6d2 Make sure client exit messages don't get lost Matt Johnston <matt@ucc.asn.au> parents: 937 diff changeset	584 TRACE(("CLOSE errfd %d", channel->errfd))
c88dce72f6d2 Make sure client exit messages don't get lost Matt Johnston <matt@ucc.asn.au> parents: 937 diff changeset	585 close(channel->errfd);
c88dce72f6d2 Make sure client exit messages don't get lost Matt Johnston <matt@ucc.asn.au> parents: 937 diff changeset	586 }
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	587
770 7577a3afc42d run closehandlers on cleanup Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	588 if (!channel->close_handler_done
7577a3afc42d run closehandlers on cleanup Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	589 && channel->type->closehandler) {
7577a3afc42d run closehandlers on cleanup Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	590 channel->type->closehandler(channel);
7577a3afc42d run closehandlers on cleanup Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	591 channel->close_handler_done = 1;
7577a3afc42d run closehandlers on cleanup Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	592 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	593
1025 02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 970 diff changeset	594 if (channel->conn_pending) {
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 970 diff changeset	595 cancel_connect(channel->conn_pending);
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 970 diff changeset	596 }
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 970 diff changeset	597
707 564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	598 ses.channels[channel->index] = NULL;
564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	599 m_free(channel);
564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	600 ses.chancount--;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	601
941 5daedffd0769 Set tcp priority as follows: Matt Johnston <matt@ucc.asn.au> parents: 938 diff changeset	602 update_channel_prio();
5daedffd0769 Set tcp priority as follows: Matt Johnston <matt@ucc.asn.au> parents: 938 diff changeset	603
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	604 TRACE(("leave remove_channel"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	605 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	606
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	607 /* 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	608 * such as chansession or x11fwd */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	609 void recv_msg_channel_request() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	610
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	611 struct Channel *channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	612
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	613 channel = getchannel();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	614
652 17962b2a6b8f - Make sure we don't use channel-specific data after it has been freed Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	615 TRACE(("enter recv_msg_channel_request %p", channel))
17962b2a6b8f - Make sure we don't use channel-specific data after it has been freed Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	616
495 cd02449b709c Don't send anything in response to a SSH_MSG_CHANNEL_REQUEST if we have Matt Johnston <matt@ucc.asn.au> parents: 467 diff changeset	617 if (channel->sent_close) {
cd02449b709c Don't send anything in response to a SSH_MSG_CHANNEL_REQUEST if we have Matt Johnston <matt@ucc.asn.au> parents: 467 diff changeset	618 TRACE(("leave recv_msg_channel_request: already closed channel"))
cd02449b709c Don't send anything in response to a SSH_MSG_CHANNEL_REQUEST if we have Matt Johnston <matt@ucc.asn.au> parents: 467 diff changeset	619 return;
cd02449b709c Don't send anything in response to a SSH_MSG_CHANNEL_REQUEST if we have Matt Johnston <matt@ucc.asn.au> parents: 467 diff changeset	620 }
cd02449b709c Don't send anything in response to a SSH_MSG_CHANNEL_REQUEST if we have Matt Johnston <matt@ucc.asn.au> parents: 467 diff changeset	621
652 17962b2a6b8f - Make sure we don't use channel-specific data after it has been freed Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	622 if (channel->type->reqhandler
17962b2a6b8f - Make sure we don't use channel-specific data after it has been freed Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	623 && !channel->close_handler_done) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	624 channel->type->reqhandler(channel);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	625 } else {
970 0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	626 int wantreply;
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	627 buf_eatstring(ses.payload);
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	628 wantreply = buf_getbool(ses.payload);
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	629 if (wantreply) {
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	630 send_msg_channel_failure(channel);
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	631 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	632 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	633
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	634 TRACE(("leave recv_msg_channel_request"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	635
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	636 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	637
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	638 /* 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	639 * channel_data packet to send.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	640 * 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	641 * 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	642 * exttype */
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	643 static void send_msg_channel_data(struct Channel *channel, int isextended) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	644
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	645 int len;
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	646 size_t maxlen, size_pos;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	647 int fd;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	648
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	649 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	650
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	651 TRACE(("enter send_msg_channel_data"))
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	652 dropbear_assert(!channel->sent_close);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	653
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	654 if (isextended) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	655 fd = channel->errfd;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	656 } else {
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	657 fd = channel->readfd;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	658 }
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	659 TRACE(("enter send_msg_channel_data isextended %d fd %d", isextended, fd))
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 221 diff changeset	660 dropbear_assert(fd >= 0);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	661
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	662 maxlen = MIN(channel->transwindow, channel->transmaxpacket);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	663 /* -(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	664 * exttype if is extended */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	665 maxlen = MIN(maxlen,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	666 ses.writepayload->size - 1 - 4 - 4 - (isextended ? 4 : 0));
770 7577a3afc42d run closehandlers on cleanup Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	667 TRACE(("maxlen %zd", maxlen))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	668 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	669 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	670 return;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	671 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	672
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	673 buf_putbyte(ses.writepayload,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	674 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	675 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	676 if (isextended) {
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	677 buf_putint(ses.writepayload, SSH_EXTENDED_DATA_STDERR);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	678 }
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	679 /* a dummy size first ...*/
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	680 size_pos = ses.writepayload->pos;
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	681 buf_putint(ses.writepayload, 0);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	682
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	683 /* read the data */
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	684 len = read(fd, buf_getwriteptr(ses.writepayload, maxlen), maxlen);
722 4a274f47eabd Add ~. and ~^Z handling to exit/suspend dbclient Matt Johnston <matt@ucc.asn.au> parents: 709 diff changeset	685
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	686 if (len <= 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	687 if (len == 0 \|\| errno != EINTR) {
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	688 /* This will also get hit in the case of EAGAIN. The only
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	689 time we expect to receive EAGAIN is when we're flushing a FD,
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	690 in which case it can be treated the same as EOF */
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	691 close_chan_fd(channel, fd, SHUT_RD);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	692 }
722 4a274f47eabd Add ~. and ~^Z handling to exit/suspend dbclient Matt Johnston <matt@ucc.asn.au> parents: 709 diff changeset	693 buf_setpos(ses.writepayload, 0);
4a274f47eabd Add ~. and ~^Z handling to exit/suspend dbclient Matt Johnston <matt@ucc.asn.au> parents: 709 diff changeset	694 buf_setlen(ses.writepayload, 0);
423 b2b67cfcd66e - Fix bug in child-exit handling where the wrong pid was being matched. Matt Johnston <matt@ucc.asn.au> parents: 416 diff changeset	695 TRACE(("leave send_msg_channel_data: len %d read err %d or EOF for fd %d",
b2b67cfcd66e - Fix bug in child-exit handling where the wrong pid was being matched. Matt Johnston <matt@ucc.asn.au> parents: 416 diff changeset	696 len, errno, fd))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	697 return;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	698 }
673 c519b78b6d1a - Don't sent SSH_MSG_UNIMPLEMENTED if we don't have ENABLE_SVR_REMOTETCPFWD Matt Johnston <matt@ucc.asn.au> parents: 652 diff changeset	699
722 4a274f47eabd Add ~. and ~^Z handling to exit/suspend dbclient Matt Johnston <matt@ucc.asn.au> parents: 709 diff changeset	700 if (channel->read_mangler) {
4a274f47eabd Add ~. and ~^Z handling to exit/suspend dbclient Matt Johnston <matt@ucc.asn.au> parents: 709 diff changeset	701 channel->read_mangler(channel, buf_getwriteptr(ses.writepayload, len), &len);
4a274f47eabd Add ~. and ~^Z handling to exit/suspend dbclient Matt Johnston <matt@ucc.asn.au> parents: 709 diff changeset	702 if (len == 0) {
4a274f47eabd Add ~. and ~^Z handling to exit/suspend dbclient Matt Johnston <matt@ucc.asn.au> parents: 709 diff changeset	703 buf_setpos(ses.writepayload, 0);
4a274f47eabd Add ~. and ~^Z handling to exit/suspend dbclient Matt Johnston <matt@ucc.asn.au> parents: 709 diff changeset	704 buf_setlen(ses.writepayload, 0);
4a274f47eabd Add ~. and ~^Z handling to exit/suspend dbclient Matt Johnston <matt@ucc.asn.au> parents: 709 diff changeset	705 return;
4a274f47eabd Add ~. and ~^Z handling to exit/suspend dbclient Matt Johnston <matt@ucc.asn.au> parents: 709 diff changeset	706 }
4a274f47eabd Add ~. and ~^Z handling to exit/suspend dbclient Matt Johnston <matt@ucc.asn.au> parents: 709 diff changeset	707 }
4a274f47eabd Add ~. and ~^Z handling to exit/suspend dbclient Matt Johnston <matt@ucc.asn.au> parents: 709 diff changeset	708
673 c519b78b6d1a - Don't sent SSH_MSG_UNIMPLEMENTED if we don't have ENABLE_SVR_REMOTETCPFWD Matt Johnston <matt@ucc.asn.au> parents: 652 diff changeset	709 TRACE(("send_msg_channel_data: len %d fd %d", len, fd))
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	710 buf_incrwritepos(ses.writepayload, len);
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	711 /* ... real size here */
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	712 buf_setpos(ses.writepayload, size_pos);
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	713 buf_putint(ses.writepayload, len);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	714
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	715 channel->transwindow -= len;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	716
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	717 encrypt_packet();
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	718
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	719 /* If we receive less data than we requested when flushing, we've
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	720 reached the equivalent of EOF */
433 c216212001fc Fix for -pedantic -ansi compilation, change // to /*/, plus some signedness Matt Johnston <matt@ucc.asn.au>* parents: 423 diff changeset	721 if (channel->flushing && len < (ssize_t)maxlen)
416 a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	722 {
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	723 TRACE(("closing from channel, flushing out."))
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	724 close_chan_fd(channel, fd, SHUT_RD);
a01c0c8e543a Improve behaviour when flushing out after a process has exited. Matt Johnston <matt@ucc.asn.au> parents: 415 diff changeset	725 }
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	726 TRACE(("leave send_msg_channel_data"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	727 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	728
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	729 /* We receive channel data */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	730 void recv_msg_channel_data() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	731
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	732 struct Channel *channel;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	733
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	734 channel = getchannel();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	735
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	736 common_recv_msg_channel_data(channel, channel->writefd, channel->writebuf);
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	737 }
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	738
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	739 /* 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	740 * for writing to the local file descriptor */
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	741 void common_recv_msg_channel_data(struct Channel *channel, int fd,
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	742 circbuffer * cbuf) {
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	743
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	744 unsigned int datalen;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	745 unsigned int maxdata;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	746 unsigned int buflen;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	747 unsigned int len;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	748
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	749 TRACE(("enter recv_msg_channel_data"))
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	750
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	751 if (channel->recv_eof) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 513 diff changeset	752 dropbear_exit("Received data after eof");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	753 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	754
707 564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	755 if (fd < 0 \|\| !cbuf) {
365 49fcc9875045 Remove accidentally removed block (making sure to close the channel). Matt Johnston <matt@ucc.asn.au> parents: 364 diff changeset	756 /* If we have encountered failed write, the far side might still
49fcc9875045 Remove accidentally removed block (making sure to close the channel). Matt Johnston <matt@ucc.asn.au> parents: 364 diff changeset	757 * be sending data without having yet received our close notification.
49fcc9875045 Remove accidentally removed block (making sure to close the channel). Matt Johnston <matt@ucc.asn.au> parents: 364 diff changeset	758 * We just drop the data. */
49fcc9875045 Remove accidentally removed block (making sure to close the channel). Matt Johnston <matt@ucc.asn.au> parents: 364 diff changeset	759 return;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	760 }
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 datalen = buf_getint(ses.payload);
365 49fcc9875045 Remove accidentally removed block (making sure to close the channel). Matt Johnston <matt@ucc.asn.au> parents: 364 diff changeset	763 TRACE(("length %d", datalen))
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	764
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	765 maxdata = cbuf_getavail(cbuf);
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	766
10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	767 /* 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	768 * 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	769 * just die horribly */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	770 if (datalen > maxdata) {
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	771 dropbear_exit("Oversized packet");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	772 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	773
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	774 /* 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	775 * just "leave it for next time" like with writechannel, since this
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	776 * is payload data */
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	777 len = datalen;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	778 while (len > 0) {
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	779 buflen = cbuf_writelen(cbuf);
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	780 buflen = MIN(buflen, len);
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	781
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	782 memcpy(cbuf_writeptr(cbuf, buflen),
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	783 buf_getptr(ses.payload, buflen), buflen);
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	784 cbuf_incrwrite(cbuf, buflen);
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	785 buf_incrpos(ses.payload, buflen);
107 d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	786 len -= buflen;
d3eb1fa8484e Nasty. Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	787 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	788
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 221 diff changeset	789 dropbear_assert(channel->recvwindow >= datalen);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	790 channel->recvwindow -= datalen;
449 3e6c536bc023 Add -W <windowsize> argument and document it. Matt Johnston <matt@ucc.asn.au> parents: 448 diff changeset	791 dropbear_assert(channel->recvwindow <= opts.recv_window);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	792
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	793 TRACE(("leave recv_msg_channel_data"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	794 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	795
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	796 /* 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	797 * 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	798 * 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	799 void recv_msg_channel_window_adjust() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	800
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	801 struct Channel * channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	802 unsigned int incr;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	803
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	804 channel = getchannel();
4 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 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	807 TRACE(("received window increment %d", incr))
448 9c61e7af0156 Rearrange the channel buffer sizes into three neat use-editable values in Matt Johnston <matt@ucc.asn.au> parents: 439 diff changeset	808 incr = MIN(incr, TRANS_MAX_WIN_INCR);
4 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 channel->transwindow += incr;
448 9c61e7af0156 Rearrange the channel buffer sizes into three neat use-editable values in Matt Johnston <matt@ucc.asn.au> parents: 439 diff changeset	811 channel->transwindow = MIN(channel->transwindow, TRANS_MAX_WINDOW);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	812
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	813 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	814
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	815 /* 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	816 * end know */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	817 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	818 unsigned int incr) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	819
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	820 TRACE(("sending window adjust %d", incr))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	821 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	822
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	823 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	824 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	825 buf_putint(ses.writepayload, incr);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	826
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	827 encrypt_packet();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	828 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	829
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	830 /* 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	831 void recv_msg_channel_open() {
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 unsigned char *type;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	834 unsigned int typelen;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	835 unsigned int remotechan, transwindow, transmaxpacket;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	836 struct Channel *channel;
7 425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	837 const struct ChanType **cp;
6 ab00ef513e97 Sorted out the first channel init issues. Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	838 const struct ChanType *chantype;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	839 unsigned int errtype = SSH_OPEN_UNKNOWN_CHANNEL_TYPE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	840 int ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	841
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	842
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	843 TRACE(("enter recv_msg_channel_open"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	844
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	845 /* get the packet contents */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	846 type = buf_getstring(ses.payload, &typelen);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	847
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	848 remotechan = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	849 transwindow = buf_getint(ses.payload);
448 9c61e7af0156 Rearrange the channel buffer sizes into three neat use-editable values in Matt Johnston <matt@ucc.asn.au> parents: 439 diff changeset	850 transwindow = MIN(transwindow, TRANS_MAX_WINDOW);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	851 transmaxpacket = buf_getint(ses.payload);
448 9c61e7af0156 Rearrange the channel buffer sizes into three neat use-editable values in Matt Johnston <matt@ucc.asn.au> parents: 439 diff changeset	852 transmaxpacket = MIN(transmaxpacket, TRANS_MAX_PAYLOAD_LEN);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	853
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	854 /* figure what type of packet it is */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	855 if (typelen > MAX_NAME_LEN) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	856 goto failure;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	857 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	858
7 425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	859 /* 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	860 * 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	861 * this list and find the matching name */
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	862 for (cp = &ses.chantypes[0], chantype = (*cp);
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	863 chantype != NULL;
425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	864 cp++, chantype = (*cp)) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	865 if (strcmp(type, chantype->name) == 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	866 break;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	867 }
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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	870 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	871 TRACE(("No matching type for '%s'", type))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	872 goto failure;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	873 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	874
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	875 TRACE(("matched type '%s'", type))
7 425ed5c20157 Chantype handling is sorted Matt Johnston <matt@ucc.asn.au> parents: 6 diff changeset	876
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	877 /* create the channel */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	878 channel = newchannel(remotechan, chantype, transwindow, transmaxpacket);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	879
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	880 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	881 TRACE(("newchannel returned NULL"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	882 goto failure;
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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	885 if (channel->type->inithandler) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	886 ret = channel->type->inithandler(channel);
362 1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	887 if (ret == SSH_OPEN_IN_PROGRESS) {
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	888 /* We'll send the confirmation later */
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	889 goto cleanup;
1c7bf9cec6c8 Rearranged some more bits, marked some areas that need work. Matt Johnston <matt@ucc.asn.au> parents: 359 diff changeset	890 }
6 ab00ef513e97 Sorted out the first channel init issues. Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	891 if (ret > 0) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	892 errtype = ret;
707 564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	893 remove_channel(channel);
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	894 TRACE(("inithandler returned failure %d", ret))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	895 goto failure;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	896 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	897 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	898
941 5daedffd0769 Set tcp priority as follows: Matt Johnston <matt@ucc.asn.au> parents: 938 diff changeset	899 if (channel->prio == DROPBEAR_CHANNEL_PRIO_EARLY) {
5daedffd0769 Set tcp priority as follows: Matt Johnston <matt@ucc.asn.au> parents: 938 diff changeset	900 channel->prio = DROPBEAR_CHANNEL_PRIO_BULK;
5daedffd0769 Set tcp priority as follows: Matt Johnston <matt@ucc.asn.au> parents: 938 diff changeset	901 }
5daedffd0769 Set tcp priority as follows: Matt Johnston <matt@ucc.asn.au> parents: 938 diff changeset	902
707 564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	903 chan_initwritebuf(channel);
564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	904
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	905 /* success */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	906 send_msg_channel_open_confirmation(channel, channel->recvwindow,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	907 channel->recvmaxpacket);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	908 goto cleanup;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	909
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	910 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	911 TRACE(("recv_msg_channel_open failure"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	912 send_msg_channel_open_failure(remotechan, errtype, "", "");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	913
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	914 cleanup:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	915 m_free(type);
941 5daedffd0769 Set tcp priority as follows: Matt Johnston <matt@ucc.asn.au> parents: 938 diff changeset	916
5daedffd0769 Set tcp priority as follows: Matt Johnston <matt@ucc.asn.au> parents: 938 diff changeset	917 update_channel_prio();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	918
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	919 TRACE(("leave recv_msg_channel_open"))
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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	922 /* Send a failure message */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	923 void send_msg_channel_failure(struct Channel *channel) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	924
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	925 TRACE(("enter send_msg_channel_failure"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	926 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	927
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	928 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_FAILURE);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	929 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	930
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	931 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	932 TRACE(("leave send_msg_channel_failure"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	933 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	934
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	935 /* Send a success message */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	936 void send_msg_channel_success(struct Channel *channel) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	937
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	938 TRACE(("enter send_msg_channel_success"))
4 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_SUCCESS);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	942 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	943
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	944 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	945 TRACE(("leave send_msg_channel_success"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	946 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	947
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	948 /* 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	949 * code (usually resource shortage or unknown chan type) */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	950 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	951 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	952
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	953 TRACE(("enter send_msg_channel_open_failure"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	954 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	955
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	956 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	957 buf_putint(ses.writepayload, remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	958 buf_putint(ses.writepayload, reason);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	959 buf_putstring(ses.writepayload, text, strlen((char*)text));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	960 buf_putstring(ses.writepayload, lang, strlen((char*)lang));
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	961
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	962 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	963 TRACE(("leave send_msg_channel_open_failure"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	964 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	965
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	966 /* 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	967 * allocated and the receive parameters */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	968 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	969 unsigned int recvwindow,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	970 unsigned int recvmaxpacket) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	971
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	972 TRACE(("enter send_msg_channel_open_confirmation"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	973 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	974
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	975 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	976 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	977 buf_putint(ses.writepayload, channel->index);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	978 buf_putint(ses.writepayload, recvwindow);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	979 buf_putint(ses.writepayload, recvmaxpacket);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	980
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	981 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	982 TRACE(("leave send_msg_channel_open_confirmation"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	983 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	984
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	985 /* close a fd, how is SHUT_RD or SHUT_WR */
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	986 static void close_chan_fd(struct Channel *channel, int fd, int how) {
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	987
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	988 int closein = 0, closeout = 0;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	989
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	990 if (channel->type->sepfds) {
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	991 TRACE(("SHUTDOWN(%d, %d)", fd, how))
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	992 shutdown(fd, how);
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	993 if (how == 0) {
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	994 closeout = 1;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	995 } else {
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	996 closein = 1;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	997 }
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	998 } else {
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	999 TRACE(("CLOSE some fd %d", fd))
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1000 close(fd);
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1001 closein = closeout = 1;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1002 }
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1003
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	1004 if (closeout && (fd == channel->readfd)) {
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1005 channel->readfd = FD_CLOSED;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1006 }
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	1007 if (closeout && ERRFD_IS_READ(channel) && (fd == channel->errfd)) {
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1008 channel->errfd = FD_CLOSED;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1009 }
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1010
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1011 if (closein && fd == channel->writefd) {
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1012 channel->writefd = FD_CLOSED;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1013 }
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	1014 if (closein && ERRFD_IS_WRITE(channel) && (fd == channel->errfd)) {
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1015 channel->errfd = FD_CLOSED;
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1016 }
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1017
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1018 /* if we called shutdown on it and all references are gone, then we
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1019 * need to close() it to stop it lingering */
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1020 if (channel->type->sepfds && channel->readfd == FD_CLOSED
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1021 && channel->writefd == FD_CLOSED && channel->errfd == FD_CLOSED) {
375 8d149b812669 - Add some extra tracing. Matt Johnston <matt@ucc.asn.au> parents: 365 diff changeset	1022 TRACE(("CLOSE (finally) of %d", fd))
363 6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1023 close(fd);
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1024 }
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1025 }
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1026
6ba2894ec8d5 Rearranged (and hopefully simplified) channel close/eof handling Matt Johnston <matt@ucc.asn.au> parents: 362 diff changeset	1027
156 8c2b3506f112 Rearrange preprocessor parts so that compilation with various options Matt Johnston <matt@ucc.asn.au> parents: 109 diff changeset	1028 #if defined(USING_LISTENERS) \|\| defined(DROPBEAR_CLIENT)
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1029 /* 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	1030 * 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	1031 * 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	1032 * completion. It is mandatory for the caller to encrypt_packet() if
941 5daedffd0769 Set tcp priority as follows: Matt Johnston <matt@ucc.asn.au> parents: 938 diff changeset	1033 * a channel is returned. NULL is returned on failure. */
9 7f77962de998 - Reworked non-channel fd handling to listener.c Matt Johnston <matt@ucc.asn.au> parents: 7 diff changeset	1034 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	1035
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1036 struct Channel* chan;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1037
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	1038 TRACE(("enter send_msg_channel_open_init()"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1039 chan = newchannel(0, type, 0, 0);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1040 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	1041 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	1042 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1043 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1044
707 564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	1045 /* Outbound opened channels don't make use of in-progress connections,
564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	1046 * we can set it up straight away */
564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	1047 chan_initwritebuf(chan);
564e7f87ecc3 Fix memory leak when direct TCP connections time out on connection. Matt Johnston <matt@ucc.asn.au> parents: 673 diff changeset	1048
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1049 /* set fd non-blocking */
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	1050 setnonblocking(fd);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1051
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 243 diff changeset	1052 chan->writefd = chan->readfd = fd;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1053 ses.maxfd = MAX(ses.maxfd, fd);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1054
243 0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1055 chan->await_open = 1;
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1056
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1057 /* now open the channel connection */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1058 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1059
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1060 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	1061 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	1062 buf_putint(ses.writepayload, chan->index);
449 3e6c536bc023 Add -W <windowsize> argument and document it. Matt Johnston <matt@ucc.asn.au> parents: 448 diff changeset	1063 buf_putint(ses.writepayload, opts.recv_window);
906 4696755c4cac A few fixes for cases where compression increases payload sizes, and Matt Johnston <matt@ucc.asn.au> parents: 896 diff changeset	1064 buf_putint(ses.writepayload, RECV_MAX_CHANNEL_DATA_LEN);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1065
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	1066 TRACE(("leave send_msg_channel_open_init()"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1067 return DROPBEAR_SUCCESS;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1068 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1069
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1070 /* 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	1071 * successful*/
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1072 void recv_msg_channel_open_confirmation() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1073
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1074 struct Channel * channel;
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	1075 int ret;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1076
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	1077 TRACE(("enter recv_msg_channel_open_confirmation"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1078
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	1079 channel = getchannel();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1080
243 0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1081 if (!channel->await_open) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 513 diff changeset	1082 dropbear_exit("Unexpected channel reply");
243 0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1083 }
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1084 channel->await_open = 0;
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1085
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1086 channel->remotechan = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1087 channel->transwindow = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1088 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	1089
187 c44df7123b0a compile fix when TRACE debugging is enabled Matt Johnston <matt@ucc.asn.au> parents: 179 diff changeset	1090 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	1091 channel->remotechan, channel->index))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1092
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	1093 /* Run the inithandler callback */
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	1094 if (channel->type->inithandler) {
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	1095 ret = channel->type->inithandler(channel);
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	1096 if (ret > 0) {
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	1097 remove_channel(channel);
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	1098 TRACE(("inithandler returned failure %d", ret))
944 2e402a09e21e Avoid use-after-free when channel inithandler fails. Thanks to Coverity Matt Johnston <matt@ucc.asn.au> parents: 941 diff changeset	1099 return;
37 0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	1100 }
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	1101 }
0913e2ee3545 we're nearly there yet Matt Johnston <matt@ucc.asn.au> parents: 13 diff changeset	1102
941 5daedffd0769 Set tcp priority as follows: Matt Johnston <matt@ucc.asn.au> parents: 938 diff changeset	1103 if (channel->prio == DROPBEAR_CHANNEL_PRIO_EARLY) {
5daedffd0769 Set tcp priority as follows: Matt Johnston <matt@ucc.asn.au> parents: 938 diff changeset	1104 channel->prio = DROPBEAR_CHANNEL_PRIO_BULK;
5daedffd0769 Set tcp priority as follows: Matt Johnston <matt@ucc.asn.au> parents: 938 diff changeset	1105 }
5daedffd0769 Set tcp priority as follows: Matt Johnston <matt@ucc.asn.au> parents: 938 diff changeset	1106 update_channel_prio();
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	1107
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	1108 TRACE(("leave recv_msg_channel_open_confirmation"))
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1109 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1110
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1111 /* Notification that our channel open request failed */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1112 void recv_msg_channel_open_failure() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1113
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1114 struct Channel * channel;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1115
179 161557a9dde8 * fix longstanding bug with connections being closed on failure to Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	1116 channel = getchannel();
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1117
243 0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1118 if (!channel->await_open) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 513 diff changeset	1119 dropbear_exit("Unexpected channel reply");
243 0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1120 }
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1121 channel->await_open = 0;
0056419cf0f4 * ensure that we only handle open confirmation/failure Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	1122
359 78518751cb82 just shuffle some variables names about, a brief comment Matt Johnston <matt@ucc.asn.au> parents: 332 diff changeset	1123 remove_channel(channel);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1124 }
156 8c2b3506f112 Rearrange preprocessor parts so that compilation with various options Matt Johnston <matt@ucc.asn.au> parents: 109 diff changeset	1125 #endif /* USING_LISTENERS */
937 4ad38e223ccd Send a failure response if a client receives a global request Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	1126
4ad38e223ccd Send a failure response if a client receives a global request Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	1127 void send_msg_request_success() {
4ad38e223ccd Send a failure response if a client receives a global request Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	1128 CHECKCLEARTOWRITE();
4ad38e223ccd Send a failure response if a client receives a global request Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	1129 buf_putbyte(ses.writepayload, SSH_MSG_REQUEST_SUCCESS);
4ad38e223ccd Send a failure response if a client receives a global request Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	1130 encrypt_packet();
4ad38e223ccd Send a failure response if a client receives a global request Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	1131 }
4ad38e223ccd Send a failure response if a client receives a global request Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	1132
4ad38e223ccd Send a failure response if a client receives a global request Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	1133 void send_msg_request_failure() {
4ad38e223ccd Send a failure response if a client receives a global request Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	1134 CHECKCLEARTOWRITE();
4ad38e223ccd Send a failure response if a client receives a global request Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	1135 buf_putbyte(ses.writepayload, SSH_MSG_REQUEST_FAILURE);
4ad38e223ccd Send a failure response if a client receives a global request Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	1136 encrypt_packet();
4ad38e223ccd Send a failure response if a client receives a global request Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	1137 }
970 0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1138
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1139 struct Channel* get_any_ready_channel() {
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1140 if (ses.chancount == 0) {
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1141 return NULL;
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1142 }
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1143 size_t i;
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1144 for (i = 0; i < ses.chansize; i++) {
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1145 struct Channel *chan = ses.channels[i];
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1146 if (chan
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1147 && !(chan->sent_eof \|\| chan->recv_eof)
1025 02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 970 diff changeset	1148 && !(chan->await_open)) {
970 0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1149 return chan;
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1150 }
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1151 }
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1152 return NULL;
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1153 }
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1154
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1155 void start_send_channel_request(struct Channel *channel,
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1156 unsigned char *type) {
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1157
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1158 CHECKCLEARTOWRITE();
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1159 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_REQUEST);
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1160 buf_putint(ses.writepayload, channel->remotechan);
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1161
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1162 buf_putstring(ses.writepayload, type, strlen(type));
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1163
0bb16232e7c4 Make keepalive handling more robust, this should now match what OpenSSH does Matt Johnston <matt@ucc.asn.au> parents: 955 diff changeset	1164 }

Mercurial > dropbear

annotate common-channel.c @ 1034:107b013e9d9d fastopen