118 void	session_set_fds(struct ssh *, Session *, int, int, int, int, int);
121 int	session_setup_x11fwd(struct ssh *, Session *);
122 int	do_exec_pty(struct ssh *, Session *, const char *);
123 int	do_exec_no_pty(struct ssh *, Session *, const char *);
124 int	do_exec(struct ssh *, Session *, const char *);
125 void	do_login(struct ssh *, Session *, const char *);
126 void	do_child(struct ssh *, Session *, const char *);
130 static void do_authenticated2(struct ssh *, Authctxt *);
132 static int session_pty_req(struct ssh *, Session *);
187 auth_input_request_forwarding(struct ssh *ssh, struct passwd * pw)  in auth_input_request_forwarding()  argument
205 		ssh_packet_send_debug(ssh, "Agent forwarding disabled: "  in auth_input_request_forwarding()
227 	nc = channel_new(ssh, "auth socket",  in auth_input_request_forwarding()
297 set_fwdpermit_from_authopts(struct ssh *ssh, const struct sshauthopt *opts)  in set_fwdpermit_from_authopts()  argument
304 		channel_clear_permission(ssh, FORWARD_USER, FORWARD_LOCAL);  in set_fwdpermit_from_authopts()
313 			channel_add_permission(ssh,  in set_fwdpermit_from_authopts()
319 		channel_clear_permission(ssh, FORWARD_USER, FORWARD_REMOTE);  in set_fwdpermit_from_authopts()
328 			channel_add_permission(ssh,  in set_fwdpermit_from_authopts()
336 do_authenticated(struct ssh *ssh, Authctxt *authctxt)  in do_authenticated()  argument
344 	set_fwdpermit_from_authopts(ssh, auth_opts);  in do_authenticated()
348 		channel_disable_admin(ssh, FORWARD_LOCAL);  in do_authenticated()
349 		channel_disable_admin(ssh, FORWARD_REMOTE);  in do_authenticated()
352 			channel_disable_admin(ssh, FORWARD_LOCAL);  in do_authenticated()
354 			channel_permit_all(ssh, FORWARD_LOCAL);  in do_authenticated()
356 			channel_disable_admin(ssh, FORWARD_REMOTE);  in do_authenticated()
358 			channel_permit_all(ssh, FORWARD_REMOTE);  in do_authenticated()
360 	auth_debug_send(ssh);  in do_authenticated()
364 	do_authenticated2(ssh, authctxt);  in do_authenticated()
366 	do_cleanup(ssh, authctxt);  in do_authenticated()
391 do_exec_no_pty(struct ssh *ssh, Session *s, const char *command)  in do_exec_no_pty()  argument
508 		do_child(ssh, s, command);  in do_exec_no_pty()
520 	ssh_packet_set_interactive(ssh, s->display != NULL,  in do_exec_no_pty()
536 	session_set_fds(ssh, s, pin[1], pout[0], perr[0],  in do_exec_no_pty()
547 	session_set_fds(ssh, s, inout[1], inout[1], err[1],  in do_exec_no_pty()
560 do_exec_pty(struct ssh *ssh, Session *s, const char *command)  in do_exec_pty()  argument
626 		do_login(ssh, s, command);  in do_exec_pty()
632 		do_child(ssh, s, command);  in do_exec_pty()
649 	ssh_packet_set_interactive(ssh, 1,  in do_exec_pty()
651 	session_set_fds(ssh, s, ptyfd, fdout, -1, 1, 1);  in do_exec_pty()
660 do_exec(struct ssh *ssh, Session *s, const char *command)  in do_exec()  argument
706 	    ssh_remote_ipaddr(ssh),  in do_exec()
707 	    ssh_remote_port(ssh),  in do_exec()
722 		ret = do_exec_pty(ssh, s, command);  in do_exec()
724 		ret = do_exec_no_pty(ssh, s, command);  in do_exec()
740 do_login(struct ssh *ssh, Session *s, const char *command)  in do_login()  argument
753 	if (ssh_packet_connection_is_on_socket(ssh)) {  in do_login()
754 		if (getpeername(ssh_packet_get_connection_in(ssh),  in do_login()
764 		    session_get_remote_name_or_ip(ssh, utmp_len,  in do_login()
985 do_setup_env(struct ssh *ssh, Session *s, const char *shell)  in do_setup_env()  argument
1191 	    ssh_remote_ipaddr(ssh), ssh_remote_port(ssh),  in do_setup_env()
1192 	    ssh_local_port(ssh));  in do_setup_env()
1195 	laddr = get_local_ipaddr(ssh_packet_get_connection_in(ssh));  in do_setup_env()
1197 	    ssh_remote_ipaddr(ssh), ssh_remote_port(ssh),  in do_setup_env()
1198 	    laddr, ssh_local_port(ssh));  in do_setup_env()
1226 do_rc_files(struct ssh *ssh, Session *s, const char *shell)  in do_rc_files()  argument
1492 child_close_fds(struct ssh *ssh)  in child_close_fds()  argument
1501 	if (ssh_packet_get_connection_in(ssh) ==  in child_close_fds()
1502 	    ssh_packet_get_connection_out(ssh))  in child_close_fds()
1503 		close(ssh_packet_get_connection_in(ssh));  in child_close_fds()
1505 		close(ssh_packet_get_connection_in(ssh));  in child_close_fds()
1506 		close(ssh_packet_get_connection_out(ssh));  in child_close_fds()
1513 	channel_close_all(ssh);  in child_close_fds()
1540 do_child(struct ssh *ssh, Session *s, const char *command)  in do_child()  argument
1548 	sshpkt_fmt_connection_id(ssh, remote_id, sizeof(remote_id));  in do_child()
1552 	ssh_packet_clear_keys(ssh);  in do_child()
1557 		child_close_fds(ssh);  in do_child()
1602 	env = do_setup_env(ssh, s, shell);  in do_child()
1615 	child_close_fds(ssh);  in do_child()
1666 	do_rc_files(ssh, s, shell);  in do_child()
1911 session_window_change_req(struct ssh *ssh, Session *s)  in session_window_change_req()  argument
1915 	if ((r = sshpkt_get_u32(ssh, &s->col)) != 0 ||  in session_window_change_req()
1916 	    (r = sshpkt_get_u32(ssh, &s->row)) != 0 ||  in session_window_change_req()
1917 	    (r = sshpkt_get_u32(ssh, &s->xpixel)) != 0 ||  in session_window_change_req()
1918 	    (r = sshpkt_get_u32(ssh, &s->ypixel)) != 0 ||  in session_window_change_req()
1919 	    (r = sshpkt_get_end(ssh)) != 0)  in session_window_change_req()
1920 		sshpkt_fatal(ssh, r, "%s: parse packet", __func__);  in session_window_change_req()
1926 session_pty_req(struct ssh *ssh, Session *s)  in session_pty_req()  argument
1935 		ssh_packet_disconnect(ssh, "Protocol error: you already have a pty.");  in session_pty_req()
1939 	if ((r = sshpkt_get_cstring(ssh, &s->term, NULL)) != 0 ||  in session_pty_req()
1940 	    (r = sshpkt_get_u32(ssh, &s->col)) != 0 ||  in session_pty_req()
1941 	    (r = sshpkt_get_u32(ssh, &s->row)) != 0 ||  in session_pty_req()
1942 	    (r = sshpkt_get_u32(ssh, &s->xpixel)) != 0 ||  in session_pty_req()
1943 	    (r = sshpkt_get_u32(ssh, &s->ypixel)) != 0)  in session_pty_req()
1944 		sshpkt_fatal(ssh, r, "%s: parse packet", __func__);  in session_pty_req()
1964 	ssh_tty_parse_modes(ssh, s->ttyfd);  in session_pty_req()
1966 	if ((r = sshpkt_get_end(ssh)) != 0)  in session_pty_req()
1967 		sshpkt_fatal(ssh, r, "%s: parse packet", __func__);  in session_pty_req()
1980 session_subsystem_req(struct ssh *ssh, Session *s)  in session_subsystem_req()  argument
1987 	if ((r = sshpkt_get_cstring(ssh, &s->subsys, NULL)) != 0 ||  in session_subsystem_req()
1988 	    (r = sshpkt_get_end(ssh)) != 0)  in session_subsystem_req()
1989 		sshpkt_fatal(ssh, r, "%s: parse packet", __func__);  in session_subsystem_req()
2007 			success = do_exec(ssh, s, cmd) == 0;  in session_subsystem_req()
2020 session_x11_req(struct ssh *ssh, Session *s)  in session_x11_req()  argument
2030 	if ((r = sshpkt_get_u8(ssh, &single_connection)) != 0 ||  in session_x11_req()
2031 	    (r = sshpkt_get_cstring(ssh, &s->auth_proto, NULL)) != 0 ||  in session_x11_req()
2032 	    (r = sshpkt_get_cstring(ssh, &s->auth_data, NULL)) != 0 ||  in session_x11_req()
2033 	    (r = sshpkt_get_u32(ssh, &s->screen)) != 0 ||  in session_x11_req()
2034 	    (r = sshpkt_get_end(ssh)) != 0)  in session_x11_req()
2035 		sshpkt_fatal(ssh, r, "%s: parse packet", __func__);  in session_x11_req()
2041 		success = session_setup_x11fwd(ssh, s);  in session_x11_req()
2056 session_shell_req(struct ssh *ssh, Session *s)  in session_shell_req()  argument
2060 	if ((r = sshpkt_get_end(ssh)) != 0)  in session_shell_req()
2061 		sshpkt_fatal(ssh, r, "%s: parse packet", __func__);  in session_shell_req()
2062 	return do_exec(ssh, s, NULL) == 0;  in session_shell_req()
2066 session_exec_req(struct ssh *ssh, Session *s)  in session_exec_req()  argument
2072 	if ((r = sshpkt_get_cstring(ssh, &command, NULL)) != 0 ||  in session_exec_req()
2073 	    (r = sshpkt_get_end(ssh)) != 0)  in session_exec_req()
2074 		sshpkt_fatal(ssh, r, "%s: parse packet", __func__);  in session_exec_req()
2076 	success = do_exec(ssh, s, command) == 0;  in session_exec_req()
2082 session_break_req(struct ssh *ssh, Session *s)  in session_break_req()  argument
2086 	if ((r = sshpkt_get_u32(ssh, NULL)) != 0 || /* ignore */  in session_break_req()
2087 	    (r = sshpkt_get_end(ssh)) != 0)  in session_break_req()
2088 		sshpkt_fatal(ssh, r, "%s: parse packet", __func__);  in session_break_req()
2096 session_env_req(struct ssh *ssh, Session *s)  in session_env_req()  argument
2102 	if ((r = sshpkt_get_cstring(ssh, &name, NULL)) != 0 ||  in session_env_req()
2103 	    (r = sshpkt_get_cstring(ssh, &val, NULL)) != 0 ||  in session_env_req()
2104 	    (r = sshpkt_get_end(ssh)) != 0)  in session_env_req()
2105 		sshpkt_fatal(ssh, r, "%s: parse packet", __func__);  in session_env_req()
2157 session_signal_req(struct ssh *ssh, Session *s)  in session_signal_req()  argument
2162 	if ((r = sshpkt_get_cstring(ssh, &signame, NULL)) != 0 ||  in session_signal_req()
2163 	    (r = sshpkt_get_end(ssh)) != 0) {  in session_signal_req()
2203 session_auth_agent_req(struct ssh *ssh, Session *s)  in session_auth_agent_req()  argument
2208 	if ((r = sshpkt_get_end(ssh)) != 0)  in session_auth_agent_req()
2209 		sshpkt_fatal(ssh, r, "%s: parse packet", __func__);  in session_auth_agent_req()
2219 		return auth_input_request_forwarding(ssh, s->pw);  in session_auth_agent_req()
2224 session_input_channel_req(struct ssh *ssh, Channel *c, const char *rtype)  in session_input_channel_req()  argument
2241 			success = session_shell_req(ssh, s);  in session_input_channel_req()
2243 			success = session_exec_req(ssh, s);  in session_input_channel_req()
2245 			success = session_pty_req(ssh, s);  in session_input_channel_req()
2247 			success = session_x11_req(ssh, s);  in session_input_channel_req()
2249 			success = session_auth_agent_req(ssh, s);  in session_input_channel_req()
2251 			success = session_subsystem_req(ssh, s);  in session_input_channel_req()
2253 			success = session_env_req(ssh, s);  in session_input_channel_req()
2257 		success = session_window_change_req(ssh, s);  in session_input_channel_req()
2259 		success = session_break_req(ssh, s);  in session_input_channel_req()
2261 		success = session_signal_req(ssh, s);  in session_input_channel_req()
2268 session_set_fds(struct ssh *ssh, Session *s,  in session_set_fds()  argument
2277 	channel_set_fds(ssh, s->chanid,  in session_set_fds()
2348 session_close_x11(struct ssh *ssh, int id)  in session_close_x11()  argument
2352 	if ((c = channel_by_id(ssh, id)) == NULL) {  in session_close_x11()
2357 		channel_cancel_cleanup(ssh, id);  in session_close_x11()
2359 			chan_mark_dead(ssh, c);  in session_close_x11()
2364 session_close_single_x11(struct ssh *ssh, int id, void *arg)  in session_close_single_x11()  argument
2370 	channel_cancel_cleanup(ssh, id);  in session_close_single_x11()
2381 			session_close_x11(ssh, s->x11_chanids[i]);  in session_close_single_x11()
2396 session_exit_message(struct ssh *ssh, Session *s, int status)  in session_exit_message()  argument
2401 	if ((c = channel_lookup(ssh, s->chanid)) == NULL)  in session_exit_message()
2407 		channel_request_start(ssh, s->chanid, "exit-status", 0);  in session_exit_message()
2408 		if ((r = sshpkt_put_u32(ssh, WEXITSTATUS(status))) != 0 ||  in session_exit_message()
2409 		    (r = sshpkt_send(ssh)) != 0)  in session_exit_message()
2410 			sshpkt_fatal(ssh, r, "%s: exit reply", __func__);  in session_exit_message()
2412 		channel_request_start(ssh, s->chanid, "exit-signal", 0);  in session_exit_message()
2416 		if ((r = sshpkt_put_cstring(ssh, sig2name(WTERMSIG(status)))) != 0 ||  in session_exit_message()
2417 		    (r = sshpkt_put_u8(ssh, WCOREDUMP(status)? 1 : 0)) != 0 ||  in session_exit_message()
2418 		    (r = sshpkt_put_cstring(ssh, "")) != 0 ||  in session_exit_message()
2419 		    (r = sshpkt_put_cstring(ssh, "")) != 0 ||  in session_exit_message()
2420 		    (r = sshpkt_send(ssh)) != 0)  in session_exit_message()
2421 			sshpkt_fatal(ssh, r, "%s: exit reply", __func__);  in session_exit_message()
2424 		ssh_packet_disconnect(ssh, "wait returned status %04x.", status);  in session_exit_message()
2435 	channel_register_cleanup(ssh, c->self, session_close_by_channel, 1);  in session_exit_message()
2444 		chan_write_failed(ssh, c);  in session_exit_message()
2448 session_close(struct ssh *ssh, Session *s)  in session_close()  argument
2454 	    ssh_remote_ipaddr(ssh),  in session_close()
2455 	    ssh_remote_port(ssh),  in session_close()
2479 session_close_by_pid(struct ssh *ssh, pid_t pid, int status)  in session_close_by_pid()  argument
2487 		session_exit_message(ssh, s, status);  in session_close_by_pid()
2498 session_close_by_channel(struct ssh *ssh, int id, void *arg)  in session_close_by_channel()  argument
2519 	channel_cancel_cleanup(ssh, s->chanid);  in session_close_by_channel()
2524 			session_close_x11(ssh, s->x11_chanids[i]);  in session_close_by_channel()
2530 	session_close(ssh, s);  in session_close_by_channel()
2534 session_destroy_all(struct ssh *ssh, void (*closefunc)(Session *))  in session_destroy_all()  argument
2543 				session_close(ssh, s);  in session_destroy_all()
2586 session_setup_x11fwd(struct ssh *ssh, Session *s)  in session_setup_x11fwd()  argument
2594 		ssh_packet_send_debug(ssh, "X11 forwarding disabled by key options.");  in session_setup_x11fwd()
2603 		ssh_packet_send_debug(ssh, "No xauth program; cannot forward X11.");  in session_setup_x11fwd()
2610 	if (x11_create_display_inet(ssh, options.x11_display_offset,  in session_setup_x11fwd()
2617 		channel_register_cleanup(ssh, s->x11_chanids[i],  in session_setup_x11fwd()
2644 			ssh_packet_send_debug(ssh, "Can't get IP address for X11 DISPLAY.");  in session_setup_x11fwd()
2662 do_authenticated2(struct ssh *ssh, Authctxt *authctxt)  in do_authenticated2()  argument
2664 	server_loop2(ssh, authctxt);  in do_authenticated2()
2668 do_cleanup(struct ssh *ssh, Authctxt *authctxt)  in do_cleanup()  argument
2724 		session_destroy_all(ssh, session_pty_cleanup2);  in do_cleanup()
2730 session_get_remote_name_or_ip(struct ssh *ssh, u_int utmp_size, int use_dns)  in session_get_remote_name_or_ip()  argument
2735 		remote = auth_get_canonical_hostname(ssh, use_dns);  in session_get_remote_name_or_ip()
2737 		remote = ssh_remote_ipaddr(ssh);  in session_get_remote_name_or_ip()