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.
38 RCSID("$OpenBSD: serverloop.c,v 1.51 2001/02/23 15:34:53 markus Exp $");
53 #include "auth-options.h"
54 #include "serverloop.h"
57 extern ServerOptions options;
59 static Buffer stdin_buffer; /* Buffer for stdin data. */
60 static Buffer stdout_buffer; /* Buffer for stdout data. */
61 static Buffer stderr_buffer; /* Buffer for stderr data. */
62 static int fdin; /* Descriptor for stdin (for writing) */
63 static int fdout; /* Descriptor for stdout (for reading);
64 May be same number as fdin. */
65 static int fderr; /* Descriptor for stderr. May be -1. */
66 static long stdin_bytes = 0; /* Number of bytes written to stdin. */
67 static long stdout_bytes = 0; /* Number of stdout bytes sent to client. */
68 static long stderr_bytes = 0; /* Number of stderr bytes sent to client. */
69 static long fdout_bytes = 0; /* Number of stdout bytes read from program. */
70 static int stdin_eof = 0; /* EOF message received from client. */
71 static int fdout_eof = 0; /* EOF encountered reading from fdout. */
72 static int fderr_eof = 0; /* EOF encountered readung from fderr. */
73 static int fdin_is_tty = 0; /* fdin points to a tty. */
74 static int connection_in; /* Connection to client (input). */
75 static int connection_out; /* Connection to client (output). */
76 static u_int buffer_high;/* "Soft" max buffer size. */
79 * This SIGCHLD kludge is used to detect when the child exits. The server
80 * will exit after that, as soon as forwarded connections have terminated.
83 static pid_t child_pid; /* Pid of the child. */
84 static volatile int child_terminated; /* The child has terminated. */
85 static volatile int child_wait_status; /* Status from wait(). */
87 void server_init_dispatch(void);
90 sigchld_handler(int sig)
92 int save_errno = errno;
95 debug("Received SIGCHLD.");
96 wait_pid = wait((int *) &child_wait_status);
98 if (wait_pid != child_pid)
99 error("Strange, got SIGCHLD and wait returned pid %d but child is %d",
100 wait_pid, child_pid);
101 if (WIFEXITED(child_wait_status) ||
102 WIFSIGNALED(child_wait_status))
103 child_terminated = 1;
105 signal(SIGCHLD, sigchld_handler);
109 sigchld_handler2(int sig)
111 int save_errno = errno;
112 debug("Received SIGCHLD.");
113 child_terminated = 1;
114 mysignal(SIGCHLD, sigchld_handler2);
119 * Make packets from buffered stderr data, and buffer it for sending
123 make_packets_from_stderr_data(void)
127 /* Send buffered stderr data to the client. */
128 while (buffer_len(&stderr_buffer) > 0 &&
129 packet_not_very_much_data_to_write()) {
130 len = buffer_len(&stderr_buffer);
131 if (packet_is_interactive()) {
135 /* Keep the packets at reasonable size. */
136 if (len > packet_get_maxsize())
137 len = packet_get_maxsize();
139 packet_start(SSH_SMSG_STDERR_DATA);
140 packet_put_string(buffer_ptr(&stderr_buffer), len);
142 buffer_consume(&stderr_buffer, len);
148 * Make packets from buffered stdout data, and buffer it for sending to the
152 make_packets_from_stdout_data(void)
156 /* Send buffered stdout data to the client. */
157 while (buffer_len(&stdout_buffer) > 0 &&
158 packet_not_very_much_data_to_write()) {
159 len = buffer_len(&stdout_buffer);
160 if (packet_is_interactive()) {
164 /* Keep the packets at reasonable size. */
165 if (len > packet_get_maxsize())
166 len = packet_get_maxsize();
168 packet_start(SSH_SMSG_STDOUT_DATA);
169 packet_put_string(buffer_ptr(&stdout_buffer), len);
171 buffer_consume(&stdout_buffer, len);
177 * Sleep in select() until we can do something. This will initialize the
178 * select masks. Upon return, the masks will indicate which descriptors
179 * have data or can accept data. Optionally, a maximum time can be specified
180 * for the duration of the wait (0 = infinite).
183 wait_until_can_do_something(fd_set **readsetp, fd_set **writesetp, int *maxfdp,
184 u_int max_time_milliseconds)
186 struct timeval tv, *tvp;
189 /* When select fails we restart from here. */
192 /* Allocate and update select() masks for channel descriptors. */
193 channel_prepare_select(readsetp, writesetp, maxfdp);
196 /* wrong: bad condition XXX */
197 if (channel_not_very_much_buffered_data())
198 FD_SET(connection_in, *readsetp);
201 * Read packets from the client unless we have too much
202 * buffered stdin or channel data.
204 if (buffer_len(&stdin_buffer) < buffer_high &&
205 channel_not_very_much_buffered_data())
206 FD_SET(connection_in, *readsetp);
208 * If there is not too much data already buffered going to
209 * the client, try to get some more data from the program.
211 if (packet_not_very_much_data_to_write()) {
213 FD_SET(fdout, *readsetp);
215 FD_SET(fderr, *readsetp);
218 * If we have buffered data, try to write some of that data
221 if (fdin != -1 && buffer_len(&stdin_buffer) > 0)
222 FD_SET(fdin, *writesetp);
226 * If we have buffered packet data going to the client, mark that
229 if (packet_have_data_to_write())
230 FD_SET(connection_out, *writesetp);
233 * If child has terminated and there is enough buffer space to read
234 * from it, then read as much as is available and exit.
236 if (child_terminated && packet_not_very_much_data_to_write())
237 if (max_time_milliseconds == 0)
238 max_time_milliseconds = 100;
240 if (max_time_milliseconds == 0)
243 tv.tv_sec = max_time_milliseconds / 1000;
244 tv.tv_usec = 1000 * (max_time_milliseconds % 1000);
248 debug3("tvp!=NULL kid %d mili %d", child_terminated, max_time_milliseconds);
250 /* Wait for something to happen, or the timeout to expire. */
251 ret = select((*maxfdp)+1, *readsetp, *writesetp, NULL, tvp);
255 error("select: %.100s", strerror(errno));
262 * Processes input from the client and the program. Input data is stored
263 * in buffers and processed later.
266 process_input(fd_set * readset)
271 /* Read and buffer any input data from the client. */
272 if (FD_ISSET(connection_in, readset)) {
273 len = read(connection_in, buf, sizeof(buf));
275 verbose("Connection closed by remote host.");
277 } else if (len < 0) {
278 if (errno != EINTR && errno != EAGAIN) {
279 verbose("Read error from remote host: %.100s", strerror(errno));
283 /* Buffer any received data. */
284 packet_process_incoming(buf, len);
290 /* Read and buffer any available stdout data from the program. */
291 if (!fdout_eof && FD_ISSET(fdout, readset)) {
292 len = read(fdout, buf, sizeof(buf));
293 if (len < 0 && (errno == EINTR || errno == EAGAIN)) {
295 } else if (len <= 0) {
298 buffer_append(&stdout_buffer, buf, len);
302 /* Read and buffer any available stderr data from the program. */
303 if (!fderr_eof && FD_ISSET(fderr, readset)) {
304 len = read(fderr, buf, sizeof(buf));
305 if (len < 0 && (errno == EINTR || errno == EAGAIN)) {
307 } else if (len <= 0) {
310 buffer_append(&stderr_buffer, buf, len);
316 * Sends data from internal buffers to client program stdin.
319 process_output(fd_set * writeset)
324 /* Write buffered data to program stdin. */
325 if (!compat20 && fdin != -1 && FD_ISSET(fdin, writeset)) {
326 len = write(fdin, buffer_ptr(&stdin_buffer),
327 buffer_len(&stdin_buffer));
328 if (len < 0 && (errno == EINTR || errno == EAGAIN)) {
330 } else if (len <= 0) {
337 shutdown(fdin, SHUT_WR); /* We will no longer send. */
341 /* Successful write. */
342 if (fdin_is_tty && tcgetattr(fdin, &tio) == 0 &&
343 !(tio.c_lflag & ECHO) && (tio.c_lflag & ICANON)) {
345 * Simulate echo to reduce the impact of
348 packet_start(SSH_MSG_IGNORE);
349 memset(buffer_ptr(&stdin_buffer), 0, len);
350 packet_put_string(buffer_ptr(&stdin_buffer), len);
353 /* Consume the data from the buffer. */
354 buffer_consume(&stdin_buffer, len);
355 /* Update the count of bytes written to the program. */
359 /* Send any buffered packet data to the client. */
360 if (FD_ISSET(connection_out, writeset))
365 * Wait until all buffered output has been sent to the client.
366 * This is used when the program terminates.
371 /* Send any buffered stdout data to the client. */
372 if (buffer_len(&stdout_buffer) > 0) {
373 packet_start(SSH_SMSG_STDOUT_DATA);
374 packet_put_string(buffer_ptr(&stdout_buffer),
375 buffer_len(&stdout_buffer));
377 /* Update the count of sent bytes. */
378 stdout_bytes += buffer_len(&stdout_buffer);
380 /* Send any buffered stderr data to the client. */
381 if (buffer_len(&stderr_buffer) > 0) {
382 packet_start(SSH_SMSG_STDERR_DATA);
383 packet_put_string(buffer_ptr(&stderr_buffer),
384 buffer_len(&stderr_buffer));
386 /* Update the count of sent bytes. */
387 stderr_bytes += buffer_len(&stderr_buffer);
389 /* Wait until all buffered data has been written to the client. */
394 process_buffered_input_packets(void)
396 dispatch_run(DISPATCH_NONBLOCK, NULL, NULL);
400 * Performs the interactive session. This handles data transmission between
401 * the client and the program. Note that the notion of stdin, stdout, and
402 * stderr in this function is sort of reversed: this function writes to
403 * stdin (of the child program), and reads from stdout and stderr (of the
407 server_loop(pid_t pid, int fdin_arg, int fdout_arg, int fderr_arg)
409 fd_set *readset = NULL, *writeset = NULL;
411 int wait_status; /* Status returned by wait(). */
412 pid_t wait_pid; /* pid returned by wait(). */
413 int waiting_termination = 0; /* Have displayed waiting close message. */
414 u_int max_time_milliseconds;
415 u_int previous_stdout_buffer_bytes;
416 u_int stdout_buffer_bytes;
419 debug("Entering interactive session.");
421 /* Initialize the SIGCHLD kludge. */
423 child_terminated = 0;
424 signal(SIGCHLD, sigchld_handler);
425 signal(SIGPIPE, SIG_IGN);
427 /* Initialize our global variables. */
435 /* we don't have stderr for interactive terminal sessions, see below */
439 if (!(datafellows & SSH_BUG_IGNOREMSG) && isatty(fdin))
442 connection_in = packet_get_connection_in();
443 connection_out = packet_get_connection_out();
445 previous_stdout_buffer_bytes = 0;
447 /* Set approximate I/O buffer size. */
448 if (packet_is_interactive())
451 buffer_high = 64 * 1024;
453 /* Initialize max_fd to the maximum of the known file descriptors. */
454 max_fd = MAX(fdin, fdout);
456 max_fd = MAX(max_fd, fderr);
457 max_fd = MAX(max_fd, connection_in);
458 max_fd = MAX(max_fd, connection_out);
460 /* Initialize Initialize buffers. */
461 buffer_init(&stdin_buffer);
462 buffer_init(&stdout_buffer);
463 buffer_init(&stderr_buffer);
466 * If we have no separate fderr (which is the case when we have a pty
467 * - there we cannot make difference between data sent to stdout and
468 * stderr), indicate that we have seen an EOF from stderr. This way
469 * we don\'t need to check the descriptor everywhere.
474 server_init_dispatch();
476 /* Main loop of the server for the interactive session mode. */
479 /* Process buffered packets from the client. */
480 process_buffered_input_packets();
483 * If we have received eof, and there is no more pending
484 * input data, cause a real eof by closing fdin.
486 if (stdin_eof && fdin != -1 && buffer_len(&stdin_buffer) == 0) {
493 shutdown(fdin, SHUT_WR); /* We will no longer send. */
497 /* Make packets from buffered stderr data to send to the client. */
498 make_packets_from_stderr_data();
501 * Make packets from buffered stdout data to send to the
502 * client. If there is very little to send, this arranges to
503 * not send them now, but to wait a short while to see if we
504 * are getting more data. This is necessary, as some systems
505 * wake up readers from a pty after each separate character.
507 max_time_milliseconds = 0;
508 stdout_buffer_bytes = buffer_len(&stdout_buffer);
509 if (stdout_buffer_bytes != 0 && stdout_buffer_bytes < 256 &&
510 stdout_buffer_bytes != previous_stdout_buffer_bytes) {
511 /* try again after a while */
512 max_time_milliseconds = 10;
515 make_packets_from_stdout_data();
517 previous_stdout_buffer_bytes = buffer_len(&stdout_buffer);
519 /* Send channel data to the client. */
520 if (packet_not_very_much_data_to_write())
521 channel_output_poll();
524 * Bail out of the loop if the program has closed its output
525 * descriptors, and we have no more data to send to the
526 * client, and there is no pending buffered data.
528 if (fdout_eof && fderr_eof && !packet_have_data_to_write() &&
529 buffer_len(&stdout_buffer) == 0 && buffer_len(&stderr_buffer) == 0) {
530 if (!channel_still_open())
532 if (!waiting_termination) {
533 const char *s = "Waiting for forwarded connections to terminate...\r\n";
535 waiting_termination = 1;
536 buffer_append(&stderr_buffer, s, strlen(s));
538 /* Display list of open channels. */
539 cp = channel_open_message();
540 buffer_append(&stderr_buffer, cp, strlen(cp));
544 /* Sleep in select() until we can do something. */
545 wait_until_can_do_something(&readset, &writeset, &max_fd,
546 max_time_milliseconds);
548 /* Process any channel events. */
549 channel_after_select(readset, writeset);
551 /* Process input from the client and from program stdout/stderr. */
552 process_input(readset);
554 /* Process output to the client and to program stdin. */
555 process_output(writeset);
562 /* Cleanup and termination code. */
564 /* Wait until all output has been sent to the client. */
567 debug("End of interactive session; stdin %ld, stdout (read %ld, sent %ld), stderr %ld bytes.",
568 stdin_bytes, fdout_bytes, stdout_bytes, stderr_bytes);
570 /* Free and clear the buffers. */
571 buffer_free(&stdin_buffer);
572 buffer_free(&stdout_buffer);
573 buffer_free(&stderr_buffer);
575 /* Close the file descriptors. */
588 /* Stop listening for channels; this removes unix domain sockets. */
589 channel_stop_listening();
591 /* Wait for the child to exit. Get its exit status. */
592 wait_pid = wait(&wait_status);
593 if (wait_pid == -1) {
595 * It is possible that the wait was handled by SIGCHLD
596 * handler. This may result in either: this call
597 * returning with EINTR, or: this call returning ECHILD.
599 if (child_terminated)
600 wait_status = child_wait_status;
602 packet_disconnect("wait: %.100s", strerror(errno));
604 /* Check if it matches the process we forked. */
606 error("Strange, wait returned pid %d, expected %d",
610 /* We no longer want our SIGCHLD handler to be called. */
611 signal(SIGCHLD, SIG_DFL);
613 /* Check if it exited normally. */
614 if (WIFEXITED(wait_status)) {
615 /* Yes, normal exit. Get exit status and send it to the client. */
616 debug("Command exited with status %d.", WEXITSTATUS(wait_status));
617 packet_start(SSH_SMSG_EXITSTATUS);
618 packet_put_int(WEXITSTATUS(wait_status));
623 * Wait for exit confirmation. Note that there might be
624 * other packets coming before it; however, the program has
625 * already died so we just ignore them. The client is
626 * supposed to respond with the confirmation when it receives
631 type = packet_read(&plen);
633 while (type != SSH_CMSG_EXIT_CONFIRMATION);
635 debug("Received exit confirmation.");
638 /* Check if the program terminated due to a signal. */
639 if (WIFSIGNALED(wait_status))
640 packet_disconnect("Command terminated on signal %d.",
641 WTERMSIG(wait_status));
643 /* Some weird exit cause. Just exit. */
644 packet_disconnect("wait returned status %04x.", wait_status);
651 fd_set *readset = NULL, *writeset = NULL;
657 debug("Entering interactive session for SSH2.");
659 mysignal(SIGCHLD, sigchld_handler2);
660 signal(SIGPIPE, SIG_IGN);
661 child_terminated = 0;
662 connection_in = packet_get_connection_in();
663 connection_out = packet_get_connection_out();
665 max_fd = MAX(connection_in, connection_out);
667 server_init_dispatch();
670 process_buffered_input_packets();
671 if (!had_channel && channel_still_open())
673 if (had_channel && !channel_still_open()) {
674 debug("!channel_still_open.");
677 if (packet_not_very_much_data_to_write())
678 channel_output_poll();
679 wait_until_can_do_something(&readset, &writeset, &max_fd, 0);
680 if (child_terminated) {
681 while ((pid = waitpid(-1, &status, WNOHANG)) > 0)
682 session_close_by_pid(pid, status);
683 child_terminated = 0;
685 channel_after_select(readset, writeset);
686 process_input(readset);
687 process_output(writeset);
694 signal(SIGCHLD, SIG_DFL);
695 while ((pid = waitpid(-1, &status, WNOHANG)) > 0)
696 session_close_by_pid(pid, status);
697 channel_stop_listening();
701 server_input_stdin_data(int type, int plen, void *ctxt)
706 /* Stdin data from the client. Append it to the buffer. */
707 /* Ignore any data if the client has closed stdin. */
710 data = packet_get_string(&data_len);
711 packet_integrity_check(plen, (4 + data_len), type);
712 buffer_append(&stdin_buffer, data, data_len);
713 memset(data, 0, data_len);
718 server_input_eof(int type, int plen, void *ctxt)
721 * Eof from the client. The stdin descriptor to the
722 * program will be closed when all buffered data has
725 debug("EOF received for stdin.");
726 packet_integrity_check(plen, 0, type);
731 server_input_window_size(int type, int plen, void *ctxt)
733 int row = packet_get_int();
734 int col = packet_get_int();
735 int xpixel = packet_get_int();
736 int ypixel = packet_get_int();
738 debug("Window change received.");
739 packet_integrity_check(plen, 4 * 4, type);
741 pty_change_window_size(fdin, row, col, xpixel, ypixel);
745 server_request_direct_tcpip(char *ctype)
748 char *target, *originator;
749 int target_port, originator_port;
751 target = packet_get_string(NULL);
752 target_port = packet_get_int();
753 originator = packet_get_string(NULL);
754 originator_port = packet_get_int();
757 debug("server_request_direct_tcpip: originator %s port %d, target %s port %d",
758 originator, originator_port, target, target_port);
760 /* XXX check permission */
761 if (no_port_forwarding_flag || !options.allow_tcp_forwarding) {
766 sock = channel_connect_to(target, target_port);
771 newch = channel_new(ctype, SSH_CHANNEL_CONNECTING,
772 sock, sock, -1, CHAN_TCP_WINDOW_DEFAULT,
773 CHAN_TCP_PACKET_DEFAULT, 0, xstrdup("direct-tcpip"), 1);
774 return (newch >= 0) ? channel_lookup(newch) : NULL;
778 server_request_session(char *ctype)
782 debug("input_session_request");
785 * A server session has no fd to read or write until a
786 * CHANNEL_REQUEST for a shell is made, so we set the type to
787 * SSH_CHANNEL_LARVAL. Additionally, a callback for handling all
788 * CHANNEL_REQUEST messages is registered.
790 newch = channel_new(ctype, SSH_CHANNEL_LARVAL,
791 -1, -1, -1, 0, CHAN_SES_PACKET_DEFAULT,
792 0, xstrdup("server-session"), 1);
793 if (session_open(newch) == 1) {
794 channel_register_callback(newch, SSH2_MSG_CHANNEL_REQUEST,
795 session_input_channel_req, (void *)0);
796 channel_register_cleanup(newch, session_close_by_channel);
797 return channel_lookup(newch);
799 debug("session open failed, free channel %d", newch);
806 server_input_channel_open(int type, int plen, void *ctxt)
815 ctype = packet_get_string(&len);
816 rchan = packet_get_int();
817 rwindow = packet_get_int();
818 rmaxpack = packet_get_int();
820 debug("server_input_channel_open: ctype %s rchan %d win %d max %d",
821 ctype, rchan, rwindow, rmaxpack);
823 if (strcmp(ctype, "session") == 0) {
824 c = server_request_session(ctype);
825 } else if (strcmp(ctype, "direct-tcpip") == 0) {
826 c = server_request_direct_tcpip(ctype);
829 debug("server_input_channel_open: confirm %s", ctype);
830 c->remote_id = rchan;
831 c->remote_window = rwindow;
832 c->remote_maxpacket = rmaxpack;
834 packet_start(SSH2_MSG_CHANNEL_OPEN_CONFIRMATION);
835 packet_put_int(c->remote_id);
836 packet_put_int(c->self);
837 packet_put_int(c->local_window);
838 packet_put_int(c->local_maxpacket);
841 debug("server_input_channel_open: failure %s", ctype);
842 packet_start(SSH2_MSG_CHANNEL_OPEN_FAILURE);
843 packet_put_int(rchan);
844 packet_put_int(SSH2_OPEN_ADMINISTRATIVELY_PROHIBITED);
845 packet_put_cstring("bla bla");
846 packet_put_cstring("");
853 server_input_global_request(int type, int plen, void *ctxt)
859 rtype = packet_get_string(NULL);
860 want_reply = packet_get_char();
861 debug("server_input_global_request: rtype %s want_reply %d", rtype, want_reply);
863 if (strcmp(rtype, "tcpip-forward") == 0) {
865 char *listen_address;
868 pw = auth_get_user();
870 fatal("server_input_global_request: no user");
871 listen_address = packet_get_string(NULL); /* XXX currently ignored */
872 listen_port = (u_short)packet_get_int();
873 debug("server_input_global_request: tcpip-forward listen %s port %d",
874 listen_address, listen_port);
876 /* check permissions */
877 if (!options.allow_tcp_forwarding ||
878 no_port_forwarding_flag ||
879 (listen_port < IPPORT_RESERVED && pw->pw_uid != 0)) {
881 packet_send_debug("Server has disabled port forwarding.");
883 /* Start listening on the port */
884 success = channel_request_forwarding(
885 listen_address, listen_port,
886 /*unspec host_to_connect*/ "<unspec host>",
887 /*unspec port_to_connect*/ 0,
888 options.gateway_ports, /*remote*/ 1);
890 xfree(listen_address);
893 packet_start(success ?
894 SSH2_MSG_REQUEST_SUCCESS : SSH2_MSG_REQUEST_FAILURE);
902 server_init_dispatch_20(void)
904 debug("server_init_dispatch_20");
905 dispatch_init(&dispatch_protocol_error);
906 dispatch_set(SSH2_MSG_CHANNEL_CLOSE, &channel_input_oclose);
907 dispatch_set(SSH2_MSG_CHANNEL_DATA, &channel_input_data);
908 dispatch_set(SSH2_MSG_CHANNEL_EOF, &channel_input_ieof);
909 dispatch_set(SSH2_MSG_CHANNEL_EXTENDED_DATA, &channel_input_extended_data);
910 dispatch_set(SSH2_MSG_CHANNEL_OPEN, &server_input_channel_open);
911 dispatch_set(SSH2_MSG_CHANNEL_OPEN_CONFIRMATION, &channel_input_open_confirmation);
912 dispatch_set(SSH2_MSG_CHANNEL_OPEN_FAILURE, &channel_input_open_failure);
913 dispatch_set(SSH2_MSG_CHANNEL_REQUEST, &channel_input_channel_request);
914 dispatch_set(SSH2_MSG_CHANNEL_WINDOW_ADJUST, &channel_input_window_adjust);
915 dispatch_set(SSH2_MSG_GLOBAL_REQUEST, &server_input_global_request);
918 server_init_dispatch_13(void)
920 debug("server_init_dispatch_13");
922 dispatch_set(SSH_CMSG_EOF, &server_input_eof);
923 dispatch_set(SSH_CMSG_STDIN_DATA, &server_input_stdin_data);
924 dispatch_set(SSH_CMSG_WINDOW_SIZE, &server_input_window_size);
925 dispatch_set(SSH_MSG_CHANNEL_CLOSE, &channel_input_close);
926 dispatch_set(SSH_MSG_CHANNEL_CLOSE_CONFIRMATION, &channel_input_close_confirmation);
927 dispatch_set(SSH_MSG_CHANNEL_DATA, &channel_input_data);
928 dispatch_set(SSH_MSG_CHANNEL_OPEN_CONFIRMATION, &channel_input_open_confirmation);
929 dispatch_set(SSH_MSG_CHANNEL_OPEN_FAILURE, &channel_input_open_failure);
930 dispatch_set(SSH_MSG_PORT_OPEN, &channel_input_port_open);
933 server_init_dispatch_15(void)
935 server_init_dispatch_13();
936 debug("server_init_dispatch_15");
937 dispatch_set(SSH_MSG_CHANNEL_CLOSE, &channel_input_ieof);
938 dispatch_set(SSH_MSG_CHANNEL_CLOSE_CONFIRMATION, &channel_input_oclose);
941 server_init_dispatch(void)
944 server_init_dispatch_20();
946 server_init_dispatch_13();
948 server_init_dispatch_15();