2 * Author: Tatu Ylonen <ylo@cs.hut.fi>
3 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
5 * Server main loop for handling the interactive session.
7 * As far as I am concerned, the code I have written for this software
8 * can be used freely for any purpose. Any derived versions of this
9 * software must be clearly marked as such, and if the derived work is
10 * incompatible with the protocol description in the RFC file, it must be
11 * called by a name other than "ssh" or "Secure Shell".
13 * SSH2 support by Markus Friedl.
14 * Copyright (c) 2000 Markus Friedl. All rights reserved.
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions
19 * 1. Redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer.
21 * 2. Redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution.
25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
26 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
27 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
28 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
29 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
30 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
50 #include "auth-options.h"
52 static Buffer stdin_buffer; /* Buffer for stdin data. */
53 static Buffer stdout_buffer; /* Buffer for stdout data. */
54 static Buffer stderr_buffer; /* Buffer for stderr data. */
55 static int fdin; /* Descriptor for stdin (for writing) */
56 static int fdout; /* Descriptor for stdout (for reading);
57 May be same number as fdin. */
58 static int fderr; /* Descriptor for stderr. May be -1. */
59 static long stdin_bytes = 0; /* Number of bytes written to stdin. */
60 static long stdout_bytes = 0; /* Number of stdout bytes sent to client. */
61 static long stderr_bytes = 0; /* Number of stderr bytes sent to client. */
62 static long fdout_bytes = 0; /* Number of stdout bytes read from program. */
63 static int stdin_eof = 0; /* EOF message received from client. */
64 static int fdout_eof = 0; /* EOF encountered reading from fdout. */
65 static int fderr_eof = 0; /* EOF encountered readung from fderr. */
66 static int connection_in; /* Connection to client (input). */
67 static int connection_out; /* Connection to client (output). */
68 static unsigned int buffer_high;/* "Soft" max buffer size. */
69 static int max_fd; /* Max file descriptor number for select(). */
72 * This SIGCHLD kludge is used to detect when the child exits. The server
73 * will exit after that, as soon as forwarded connections have terminated.
75 * After SIGCHLD child_has_selected is set to 1 after the first pass
76 * through the wait_until_can_do_something() select(). This ensures
77 * that the child's output gets a chance to drain before it is yanked.
80 static pid_t child_pid; /* Pid of the child. */
81 static volatile int child_terminated; /* The child has terminated. */
82 static volatile int child_has_selected; /* Child has had chance to drain. */
83 static volatile int child_wait_status; /* Status from wait(). */
85 void server_init_dispatch(void);
88 sigchld_handler(int sig)
90 int save_errno = errno;
93 debug("Received SIGCHLD.");
94 wait_pid = wait((int *) &child_wait_status);
96 if (wait_pid != child_pid)
97 error("Strange, got SIGCHLD and wait returned pid %d but child is %d",
99 if (WIFEXITED(child_wait_status) ||
100 WIFSIGNALED(child_wait_status))
101 child_terminated = 1;
102 child_has_selected = 0;
104 signal(SIGCHLD, sigchld_handler);
108 sigchld_handler2(int sig)
110 int save_errno = errno;
111 debug("Received SIGCHLD.");
112 child_terminated = 1;
117 * Make packets from buffered stderr data, and buffer it for sending
121 make_packets_from_stderr_data()
125 /* Send buffered stderr data to the client. */
126 while (buffer_len(&stderr_buffer) > 0 &&
127 packet_not_very_much_data_to_write()) {
128 len = buffer_len(&stderr_buffer);
129 if (packet_is_interactive()) {
133 /* Keep the packets at reasonable size. */
134 if (len > packet_get_maxsize())
135 len = packet_get_maxsize();
137 packet_start(SSH_SMSG_STDERR_DATA);
138 packet_put_string(buffer_ptr(&stderr_buffer), len);
140 buffer_consume(&stderr_buffer, len);
146 * Make packets from buffered stdout data, and buffer it for sending to the
150 make_packets_from_stdout_data()
154 /* Send buffered stdout data to the client. */
155 while (buffer_len(&stdout_buffer) > 0 &&
156 packet_not_very_much_data_to_write()) {
157 len = buffer_len(&stdout_buffer);
158 if (packet_is_interactive()) {
162 /* Keep the packets at reasonable size. */
163 if (len > packet_get_maxsize())
164 len = packet_get_maxsize();
166 packet_start(SSH_SMSG_STDOUT_DATA);
167 packet_put_string(buffer_ptr(&stdout_buffer), len);
169 buffer_consume(&stdout_buffer, len);
175 * Sleep in select() until we can do something. This will initialize the
176 * select masks. Upon return, the masks will indicate which descriptors
177 * have data or can accept data. Optionally, a maximum time can be specified
178 * for the duration of the wait (0 = infinite).
181 wait_until_can_do_something(fd_set * readset, fd_set * writeset,
182 unsigned int max_time_milliseconds)
184 struct timeval tv, *tvp;
187 /* When select fails we restart from here. */
190 /* Initialize select() masks. */
195 /* wrong: bad condition XXX */
196 if (channel_not_very_much_buffered_data())
197 FD_SET(connection_in, readset);
200 * Read packets from the client unless we have too much
201 * buffered stdin or channel data.
203 if (buffer_len(&stdin_buffer) < buffer_high &&
204 channel_not_very_much_buffered_data())
205 FD_SET(connection_in, readset);
207 * If there is not too much data already buffered going to
208 * the client, try to get some more data from the program.
210 if (packet_not_very_much_data_to_write()) {
212 FD_SET(fdout, readset);
214 FD_SET(fderr, readset);
217 * If we have buffered data, try to write some of that data
220 if (fdin != -1 && buffer_len(&stdin_buffer) > 0)
221 FD_SET(fdin, writeset);
223 /* Set masks for channel descriptors. */
224 channel_prepare_select(readset, writeset);
227 * If we have buffered packet data going to the client, mark that
230 if (packet_have_data_to_write())
231 FD_SET(connection_out, writeset);
233 /* Update the maximum descriptor number if appropriate. */
234 if (channel_max_fd() > max_fd)
235 max_fd = channel_max_fd();
238 * If child has terminated and there is enough buffer space to read
239 * from it, then read as much as is available and exit.
241 if (child_terminated && packet_not_very_much_data_to_write())
242 if (max_time_milliseconds == 0)
243 max_time_milliseconds = 100;
245 if (max_time_milliseconds == 0)
248 tv.tv_sec = max_time_milliseconds / 1000;
249 tv.tv_usec = 1000 * (max_time_milliseconds % 1000);
253 debug("tvp!=NULL kid %d mili %d", child_terminated, max_time_milliseconds);
255 /* Wait for something to happen, or the timeout to expire. */
256 ret = select(max_fd + 1, readset, writeset, NULL, tvp);
260 error("select: %.100s", strerror(errno));
265 if (child_terminated)
266 child_has_selected = 1;
270 * Processes input from the client and the program. Input data is stored
271 * in buffers and processed later.
274 process_input(fd_set * readset)
279 /* Read and buffer any input data from the client. */
280 if (FD_ISSET(connection_in, readset)) {
281 len = read(connection_in, buf, sizeof(buf));
283 verbose("Connection closed by remote host.");
285 } else if (len < 0) {
286 if (errno != EINTR && errno != EAGAIN) {
287 verbose("Read error from remote host: %.100s", strerror(errno));
291 /* Buffer any received data. */
292 packet_process_incoming(buf, len);
298 /* Read and buffer any available stdout data from the program. */
299 if (!fdout_eof && FD_ISSET(fdout, readset)) {
300 len = read(fdout, buf, sizeof(buf));
301 if (len < 0 && (errno == EINTR || errno == EAGAIN)) {
303 } else if (len <= 0) {
306 buffer_append(&stdout_buffer, buf, len);
310 /* Read and buffer any available stderr data from the program. */
311 if (!fderr_eof && FD_ISSET(fderr, readset)) {
312 len = read(fderr, buf, sizeof(buf));
313 if (len < 0 && (errno == EINTR || errno == EAGAIN)) {
315 } else if (len <= 0) {
318 buffer_append(&stderr_buffer, buf, len);
324 * Sends data from internal buffers to client program stdin.
327 process_output(fd_set * writeset)
331 /* Write buffered data to program stdin. */
332 if (!compat20 && fdin != -1 && FD_ISSET(fdin, writeset)) {
333 len = write(fdin, buffer_ptr(&stdin_buffer),
334 buffer_len(&stdin_buffer));
335 if (len < 0 && (errno == EINTR || errno == EAGAIN)) {
337 } else if (len <= 0) {
344 shutdown(fdin, SHUT_WR); /* We will no longer send. */
348 /* Successful write. Consume the data from the buffer. */
349 buffer_consume(&stdin_buffer, len);
350 /* Update the count of bytes written to the program. */
354 /* Send any buffered packet data to the client. */
355 if (FD_ISSET(connection_out, writeset))
360 * Wait until all buffered output has been sent to the client.
361 * This is used when the program terminates.
366 /* Send any buffered stdout data to the client. */
367 if (buffer_len(&stdout_buffer) > 0) {
368 packet_start(SSH_SMSG_STDOUT_DATA);
369 packet_put_string(buffer_ptr(&stdout_buffer),
370 buffer_len(&stdout_buffer));
372 /* Update the count of sent bytes. */
373 stdout_bytes += buffer_len(&stdout_buffer);
375 /* Send any buffered stderr data to the client. */
376 if (buffer_len(&stderr_buffer) > 0) {
377 packet_start(SSH_SMSG_STDERR_DATA);
378 packet_put_string(buffer_ptr(&stderr_buffer),
379 buffer_len(&stderr_buffer));
381 /* Update the count of sent bytes. */
382 stderr_bytes += buffer_len(&stderr_buffer);
384 /* Wait until all buffered data has been written to the client. */
389 process_buffered_input_packets()
391 dispatch_run(DISPATCH_NONBLOCK, NULL, NULL);
395 * Performs the interactive session. This handles data transmission between
396 * the client and the program. Note that the notion of stdin, stdout, and
397 * stderr in this function is sort of reversed: this function writes to
398 * stdin (of the child program), and reads from stdout and stderr (of the
402 server_loop(pid_t pid, int fdin_arg, int fdout_arg, int fderr_arg)
404 fd_set readset, writeset;
405 int wait_status; /* Status returned by wait(). */
406 pid_t wait_pid; /* pid returned by wait(). */
407 int waiting_termination = 0; /* Have displayed waiting close message. */
408 unsigned int max_time_milliseconds;
409 unsigned int previous_stdout_buffer_bytes;
410 unsigned int stdout_buffer_bytes;
413 debug("Entering interactive session.");
415 /* Initialize the SIGCHLD kludge. */
417 child_terminated = 0;
418 child_has_selected = 0;
419 signal(SIGCHLD, sigchld_handler);
420 signal(SIGPIPE, SIG_IGN);
422 /* Initialize our global variables. */
430 /* we don't have stderr for interactive terminal sessions, see below */
434 connection_in = packet_get_connection_in();
435 connection_out = packet_get_connection_out();
437 previous_stdout_buffer_bytes = 0;
439 /* Set approximate I/O buffer size. */
440 if (packet_is_interactive())
443 buffer_high = 64 * 1024;
445 /* Initialize max_fd to the maximum of the known file descriptors. */
449 if (fderr != -1 && fderr > max_fd)
451 if (connection_in > max_fd)
452 max_fd = connection_in;
453 if (connection_out > max_fd)
454 max_fd = connection_out;
456 /* Initialize Initialize buffers. */
457 buffer_init(&stdin_buffer);
458 buffer_init(&stdout_buffer);
459 buffer_init(&stderr_buffer);
462 * If we have no separate fderr (which is the case when we have a pty
463 * - there we cannot make difference between data sent to stdout and
464 * stderr), indicate that we have seen an EOF from stderr. This way
465 * we don\'t need to check the descriptor everywhere.
470 server_init_dispatch();
472 /* Main loop of the server for the interactive session mode. */
475 /* Process buffered packets from the client. */
476 process_buffered_input_packets();
479 * If we have received eof, and there is no more pending
480 * input data, cause a real eof by closing fdin.
482 if (stdin_eof && fdin != -1 && buffer_len(&stdin_buffer) == 0) {
489 shutdown(fdin, SHUT_WR); /* We will no longer send. */
493 /* Make packets from buffered stderr data to send to the client. */
494 make_packets_from_stderr_data();
497 * Make packets from buffered stdout data to send to the
498 * client. If there is very little to send, this arranges to
499 * not send them now, but to wait a short while to see if we
500 * are getting more data. This is necessary, as some systems
501 * wake up readers from a pty after each separate character.
503 max_time_milliseconds = 0;
504 stdout_buffer_bytes = buffer_len(&stdout_buffer);
505 if (stdout_buffer_bytes != 0 && stdout_buffer_bytes < 256 &&
506 stdout_buffer_bytes != previous_stdout_buffer_bytes) {
507 /* try again after a while */
508 max_time_milliseconds = 10;
511 make_packets_from_stdout_data();
513 previous_stdout_buffer_bytes = buffer_len(&stdout_buffer);
515 /* Send channel data to the client. */
516 if (packet_not_very_much_data_to_write())
517 channel_output_poll();
520 * Bail out of the loop if the program has closed its output
521 * descriptors, and we have no more data to send to the
522 * client, and there is no pending buffered data.
524 if (((fdout_eof && fderr_eof) ||
525 (child_terminated && child_has_selected)) &&
526 !packet_have_data_to_write() &&
527 (buffer_len(&stdout_buffer) == 0) &&
528 (buffer_len(&stderr_buffer) == 0)) {
529 if (!channel_still_open())
531 if (!waiting_termination) {
532 const char *s = "Waiting for forwarded connections to terminate...\r\n";
534 waiting_termination = 1;
535 buffer_append(&stderr_buffer, s, strlen(s));
537 /* Display list of open channels. */
538 cp = channel_open_message();
539 buffer_append(&stderr_buffer, cp, strlen(cp));
543 /* Sleep in select() until we can do something. */
544 wait_until_can_do_something(&readset, &writeset,
545 max_time_milliseconds);
547 /* Process any channel events. */
548 channel_after_select(&readset, &writeset);
550 /* Process input from the client and from program stdout/stderr. */
551 process_input(&readset);
553 /* Process output to the client and to program stdin. */
554 process_output(&writeset);
557 /* Cleanup and termination code. */
559 /* Wait until all output has been sent to the client. */
562 debug("End of interactive session; stdin %ld, stdout (read %ld, sent %ld), stderr %ld bytes.",
563 stdin_bytes, fdout_bytes, stdout_bytes, stderr_bytes);
565 /* Free and clear the buffers. */
566 buffer_free(&stdin_buffer);
567 buffer_free(&stdout_buffer);
568 buffer_free(&stderr_buffer);
570 /* Close the file descriptors. */
583 /* Stop listening for channels; this removes unix domain sockets. */
584 channel_stop_listening();
586 /* Wait for the child to exit. Get its exit status. */
587 wait_pid = wait(&wait_status);
590 * It is possible that the wait was handled by SIGCHLD
591 * handler. This may result in either: this call
592 * returning with EINTR, or: this call returning ECHILD.
594 if (child_terminated)
595 wait_status = child_wait_status;
597 packet_disconnect("wait: %.100s", strerror(errno));
599 /* Check if it matches the process we forked. */
601 error("Strange, wait returned pid %d, expected %d",
605 /* We no longer want our SIGCHLD handler to be called. */
606 signal(SIGCHLD, SIG_DFL);
608 /* Check if it exited normally. */
609 if (WIFEXITED(wait_status)) {
610 /* Yes, normal exit. Get exit status and send it to the client. */
611 debug("Command exited with status %d.", WEXITSTATUS(wait_status));
612 packet_start(SSH_SMSG_EXITSTATUS);
613 packet_put_int(WEXITSTATUS(wait_status));
618 * Wait for exit confirmation. Note that there might be
619 * other packets coming before it; however, the program has
620 * already died so we just ignore them. The client is
621 * supposed to respond with the confirmation when it receives
626 type = packet_read(&plen);
628 while (type != SSH_CMSG_EXIT_CONFIRMATION);
630 debug("Received exit confirmation.");
633 /* Check if the program terminated due to a signal. */
634 if (WIFSIGNALED(wait_status))
635 packet_disconnect("Command terminated on signal %d.",
636 WTERMSIG(wait_status));
638 /* Some weird exit cause. Just exit. */
639 packet_disconnect("wait returned status %04x.", wait_status);
646 fd_set readset, writeset;
651 debug("Entering interactive session for SSH2.");
653 signal(SIGCHLD, sigchld_handler2);
654 signal(SIGPIPE, SIG_IGN);
655 child_terminated = 0;
656 connection_in = packet_get_connection_in();
657 connection_out = packet_get_connection_out();
658 max_fd = connection_in;
659 if (connection_out > max_fd)
660 max_fd = connection_out;
661 server_init_dispatch();
664 process_buffered_input_packets();
665 if (!had_channel && channel_still_open())
667 if (had_channel && !channel_still_open()) {
668 debug("!channel_still_open.");
671 if (packet_not_very_much_data_to_write())
672 channel_output_poll();
673 wait_until_can_do_something(&readset, &writeset, 0);
674 if (child_terminated) {
675 while ((pid = waitpid(-1, &status, WNOHANG)) > 0)
676 session_close_by_pid(pid, status);
677 child_terminated = 0;
678 signal(SIGCHLD, sigchld_handler2);
679 if (used_sessions() == 0)
682 channel_after_select(&readset, &writeset);
683 process_input(&readset);
684 process_output(&writeset);
686 signal(SIGCHLD, SIG_DFL);
687 while ((pid = waitpid(-1, &status, WNOHANG)) > 0)
688 session_close_by_pid(pid, status);
689 channel_stop_listening();
693 server_input_stdin_data(int type, int plen, void *ctxt)
696 unsigned int data_len;
698 /* Stdin data from the client. Append it to the buffer. */
699 /* Ignore any data if the client has closed stdin. */
702 data = packet_get_string(&data_len);
703 packet_integrity_check(plen, (4 + data_len), type);
704 buffer_append(&stdin_buffer, data, data_len);
705 memset(data, 0, data_len);
710 server_input_eof(int type, int plen, void *ctxt)
713 * Eof from the client. The stdin descriptor to the
714 * program will be closed when all buffered data has
717 debug("EOF received for stdin.");
718 packet_integrity_check(plen, 0, type);
723 server_input_window_size(int type, int plen, void *ctxt)
725 int row = packet_get_int();
726 int col = packet_get_int();
727 int xpixel = packet_get_int();
728 int ypixel = packet_get_int();
730 debug("Window change received.");
731 packet_integrity_check(plen, 4 * 4, type);
733 pty_change_window_size(fdin, row, col, xpixel, ypixel);
737 input_direct_tcpip(void)
740 char *target, *originator;
741 int target_port, originator_port;
743 target = packet_get_string(NULL);
744 target_port = packet_get_int();
745 originator = packet_get_string(NULL);
746 originator_port = packet_get_int();
749 debug("open direct-tcpip: from %s port %d to %s port %d",
750 originator, originator_port, target, target_port);
752 /* XXX check permission */
753 if (no_port_forwarding_flag) {
758 sock = channel_connect_to(target, target_port);
763 return channel_new("direct-tcpip", SSH_CHANNEL_OPEN,
764 sock, sock, -1, CHAN_TCP_WINDOW_DEFAULT,
765 CHAN_TCP_PACKET_DEFAULT, 0, xstrdup("direct-tcpip"));
769 server_input_channel_open(int type, int plen, void *ctxt)
779 ctype = packet_get_string(&len);
780 rchan = packet_get_int();
781 rwindow = packet_get_int();
782 rmaxpack = packet_get_int();
784 debug("server_input_channel_open: ctype %s rchan %d win %d max %d",
785 ctype, rchan, rwindow, rmaxpack);
787 if (strcmp(ctype, "session") == 0) {
788 debug("open session");
791 * A server session has no fd to read or write
792 * until a CHANNEL_REQUEST for a shell is made,
793 * so we set the type to SSH_CHANNEL_LARVAL.
794 * Additionally, a callback for handling all
795 * CHANNEL_REQUEST messages is registered.
797 id = channel_new(ctype, SSH_CHANNEL_LARVAL,
798 -1, -1, -1, 0, CHAN_SES_PACKET_DEFAULT,
799 0, xstrdup("server-session"));
800 if (session_open(id) == 1) {
801 channel_register_callback(id, SSH2_MSG_CHANNEL_REQUEST,
802 session_input_channel_req, (void *)0);
803 channel_register_cleanup(id, session_close_by_channel);
804 c = channel_lookup(id);
806 debug("session open failed, free channel %d", id);
809 } else if (strcmp(ctype, "direct-tcpip") == 0) {
810 id = input_direct_tcpip();
812 c = channel_lookup(id);
815 debug("confirm %s", ctype);
816 c->remote_id = rchan;
817 c->remote_window = rwindow;
818 c->remote_maxpacket = rmaxpack;
820 packet_start(SSH2_MSG_CHANNEL_OPEN_CONFIRMATION);
821 packet_put_int(c->remote_id);
822 packet_put_int(c->self);
823 packet_put_int(c->local_window);
824 packet_put_int(c->local_maxpacket);
827 debug("failure %s", ctype);
828 packet_start(SSH2_MSG_CHANNEL_OPEN_FAILURE);
829 packet_put_int(rchan);
830 packet_put_int(SSH2_OPEN_ADMINISTRATIVELY_PROHIBITED);
831 packet_put_cstring("bla bla");
832 packet_put_cstring("");
839 server_init_dispatch_20()
841 debug("server_init_dispatch_20");
842 dispatch_init(&dispatch_protocol_error);
843 dispatch_set(SSH2_MSG_CHANNEL_CLOSE, &channel_input_oclose);
844 dispatch_set(SSH2_MSG_CHANNEL_DATA, &channel_input_data);
845 dispatch_set(SSH2_MSG_CHANNEL_EOF, &channel_input_ieof);
846 dispatch_set(SSH2_MSG_CHANNEL_EXTENDED_DATA, &channel_input_extended_data);
847 dispatch_set(SSH2_MSG_CHANNEL_OPEN, &server_input_channel_open);
848 dispatch_set(SSH2_MSG_CHANNEL_OPEN_CONFIRMATION, &channel_input_open_confirmation);
849 dispatch_set(SSH2_MSG_CHANNEL_OPEN_FAILURE, &channel_input_open_failure);
850 dispatch_set(SSH2_MSG_CHANNEL_REQUEST, &channel_input_channel_request);
851 dispatch_set(SSH2_MSG_CHANNEL_WINDOW_ADJUST, &channel_input_window_adjust);
854 server_init_dispatch_13()
856 debug("server_init_dispatch_13");
858 dispatch_set(SSH_CMSG_EOF, &server_input_eof);
859 dispatch_set(SSH_CMSG_STDIN_DATA, &server_input_stdin_data);
860 dispatch_set(SSH_CMSG_WINDOW_SIZE, &server_input_window_size);
861 dispatch_set(SSH_MSG_CHANNEL_CLOSE, &channel_input_close);
862 dispatch_set(SSH_MSG_CHANNEL_CLOSE_CONFIRMATION, &channel_input_close_confirmation);
863 dispatch_set(SSH_MSG_CHANNEL_DATA, &channel_input_data);
864 dispatch_set(SSH_MSG_CHANNEL_OPEN_CONFIRMATION, &channel_input_open_confirmation);
865 dispatch_set(SSH_MSG_CHANNEL_OPEN_FAILURE, &channel_input_open_failure);
866 dispatch_set(SSH_MSG_PORT_OPEN, &channel_input_port_open);
869 server_init_dispatch_15()
871 server_init_dispatch_13();
872 debug("server_init_dispatch_15");
873 dispatch_set(SSH_MSG_CHANNEL_CLOSE, &channel_input_ieof);
874 dispatch_set(SSH_MSG_CHANNEL_CLOSE_CONFIRMATION, &channel_input_oclose);
877 server_init_dispatch()
880 server_init_dispatch_20();
882 server_init_dispatch_13();
884 server_init_dispatch_15();