108 void	session_set_fds(struct ssh *, Session *, int, int, int, int, int);
111 int	session_setup_x11fwd(struct ssh *, Session *);
112 int	do_exec_pty(struct ssh *, Session *, const char *);
113 int	do_exec_no_pty(struct ssh *, Session *, const char *);
114 int	do_exec(struct ssh *, Session *, const char *);
115 void	do_login(struct ssh *, Session *, const char *);
116 __dead void	do_child(struct ssh *, Session *, const char *);
120 static void do_authenticated2(struct ssh *, Authctxt *);
122 static int session_pty_req(struct ssh *, Session *);
177 auth_input_request_forwarding(struct ssh *ssh, struct passwd * pw)  in auth_input_request_forwarding()  argument
195 		ssh_packet_send_debug(ssh, "Agent forwarding disabled: "  in auth_input_request_forwarding()
217 	nc = channel_new(ssh, "auth-listener",  in auth_input_request_forwarding()
287 set_fwdpermit_from_authopts(struct ssh *ssh, const struct sshauthopt *opts)  in set_fwdpermit_from_authopts()  argument
294 		channel_clear_permission(ssh, FORWARD_USER, FORWARD_LOCAL);  in set_fwdpermit_from_authopts()
303 			channel_add_permission(ssh,  in set_fwdpermit_from_authopts()
309 		channel_clear_permission(ssh, FORWARD_USER, FORWARD_REMOTE);  in set_fwdpermit_from_authopts()
318 			channel_add_permission(ssh,  in set_fwdpermit_from_authopts()
326 do_authenticated(struct ssh *ssh, Authctxt *authctxt)  in do_authenticated()  argument
334 	set_fwdpermit_from_authopts(ssh, auth_opts);  in do_authenticated()
338 		channel_disable_admin(ssh, FORWARD_LOCAL);  in do_authenticated()
339 		channel_disable_admin(ssh, FORWARD_REMOTE);  in do_authenticated()
342 			channel_disable_admin(ssh, FORWARD_LOCAL);  in do_authenticated()
344 			channel_permit_all(ssh, FORWARD_LOCAL);  in do_authenticated()
346 			channel_disable_admin(ssh, FORWARD_REMOTE);  in do_authenticated()
348 			channel_permit_all(ssh, FORWARD_REMOTE);  in do_authenticated()
350 	auth_debug_send(ssh);  in do_authenticated()
354 	do_authenticated2(ssh, authctxt);  in do_authenticated()
356 	do_cleanup(ssh, authctxt);  in do_authenticated()
381 do_exec_no_pty(struct ssh *ssh, Session *s, const char *command)  in do_exec_no_pty()  argument
498 		do_child(ssh, s, command);  in do_exec_no_pty()
506 	ssh_packet_set_interactive(ssh, s->display != NULL,  in do_exec_no_pty()
515 	session_set_fds(ssh, s, pin[1], pout[0], perr[0],  in do_exec_no_pty()
526 	session_set_fds(ssh, s, inout[1], inout[1], err[1],  in do_exec_no_pty()
539 do_exec_pty(struct ssh *ssh, Session *s, const char *command)  in do_exec_pty()  argument
604 		do_login(ssh, s, command);  in do_exec_pty()
610 		do_child(ssh, s, command);  in do_exec_pty()
622 	ssh_packet_set_interactive(ssh, 1,  in do_exec_pty()
624 	session_set_fds(ssh, s, ptyfd, fdout, -1, 1, 1);  in do_exec_pty()
633 do_exec(struct ssh *ssh, Session *s, const char *command)  in do_exec()  argument
679 	    ssh_remote_ipaddr(ssh),  in do_exec()
680 	    ssh_remote_port(ssh),  in do_exec()
691 		ret = do_exec_pty(ssh, s, command);  in do_exec()
693 		ret = do_exec_no_pty(ssh, s, command);  in do_exec()
710 do_login(struct ssh *ssh, Session *s, const char *command)  in do_login()  argument
721 	if (ssh_packet_connection_is_on_socket(ssh)) {  in do_login()
722 		if (getpeername(ssh_packet_get_connection_in(ssh),  in do_login()
869 do_setup_env(struct ssh *ssh, Session *s, const char *shell)  in do_setup_env()  argument
988 	    ssh_remote_ipaddr(ssh), ssh_remote_port(ssh),  in do_setup_env()
989 	    ssh_local_port(ssh));  in do_setup_env()
992 	laddr = get_local_ipaddr(ssh_packet_get_connection_in(ssh));  in do_setup_env()
994 	    ssh_remote_ipaddr(ssh), ssh_remote_port(ssh),  in do_setup_env()
995 	    laddr, ssh_local_port(ssh));  in do_setup_env()
1034 do_rc_files(struct ssh *ssh, Session *s, const char *shell)  in do_rc_files()  argument
1290 child_close_fds(struct ssh *ssh)  in child_close_fds()  argument
1299 	if (ssh_packet_get_connection_in(ssh) ==  in child_close_fds()
1300 	    ssh_packet_get_connection_out(ssh))  in child_close_fds()
1301 		close(ssh_packet_get_connection_in(ssh));  in child_close_fds()
1303 		close(ssh_packet_get_connection_in(ssh));  in child_close_fds()
1304 		close(ssh_packet_get_connection_out(ssh));  in child_close_fds()
1311 	channel_close_all(ssh);  in child_close_fds()
1338 do_child(struct ssh *ssh, Session *s, const char *command)  in do_child()  argument
1346 	sshpkt_fmt_connection_id(ssh, remote_id, sizeof(remote_id));  in do_child()
1350 	ssh_packet_clear_keys(ssh);  in do_child()
1355 		child_close_fds(ssh);  in do_child()
1393 	env = do_setup_env(ssh, s, shell);  in do_child()
1407 	child_close_fds(ssh);  in do_child()
1456 	do_rc_files(ssh, s, shell);  in do_child()
1698 session_window_change_req(struct ssh *ssh, Session *s)  in session_window_change_req()  argument
1702 	if ((r = sshpkt_get_u32(ssh, &s->col)) != 0 ||  in session_window_change_req()
1703 	    (r = sshpkt_get_u32(ssh, &s->row)) != 0 ||  in session_window_change_req()
1704 	    (r = sshpkt_get_u32(ssh, &s->xpixel)) != 0 ||  in session_window_change_req()
1705 	    (r = sshpkt_get_u32(ssh, &s->ypixel)) != 0 ||  in session_window_change_req()
1706 	    (r = sshpkt_get_end(ssh)) != 0)  in session_window_change_req()
1707 		sshpkt_fatal(ssh, r, "%s: parse packet", __func__);  in session_window_change_req()
1713 session_pty_req(struct ssh *ssh, Session *s)  in session_pty_req()  argument
1722 		ssh_packet_disconnect(ssh, "Protocol error: you already have a pty.");  in session_pty_req()
1726 	if ((r = sshpkt_get_cstring(ssh, &s->term, NULL)) != 0 ||  in session_pty_req()
1727 	    (r = sshpkt_get_u32(ssh, &s->col)) != 0 ||  in session_pty_req()
1728 	    (r = sshpkt_get_u32(ssh, &s->row)) != 0 ||  in session_pty_req()
1729 	    (r = sshpkt_get_u32(ssh, &s->xpixel)) != 0 ||  in session_pty_req()
1730 	    (r = sshpkt_get_u32(ssh, &s->ypixel)) != 0)  in session_pty_req()
1731 		sshpkt_fatal(ssh, r, "%s: parse packet", __func__);  in session_pty_req()
1750 	ssh_tty_parse_modes(ssh, s->ttyfd);  in session_pty_req()
1752 	if ((r = sshpkt_get_end(ssh)) != 0)  in session_pty_req()
1753 		sshpkt_fatal(ssh, r, "%s: parse packet", __func__);  in session_pty_req()
1763 session_subsystem_req(struct ssh *ssh, Session *s)  in session_subsystem_req()  argument
1770 	if ((r = sshpkt_get_cstring(ssh, &s->subsys, NULL)) != 0 ||  in session_subsystem_req()
1771 	    (r = sshpkt_get_end(ssh)) != 0)  in session_subsystem_req()
1772 		sshpkt_fatal(ssh, r, "%s: parse packet", __func__);  in session_subsystem_req()
1792 			channel_set_xtype(ssh, s->chanid, type);  in session_subsystem_req()
1794 			success = do_exec(ssh, s, cmd) == 0;  in session_subsystem_req()
1807 session_x11_req(struct ssh *ssh, Session *s)  in session_x11_req()  argument
1817 	if ((r = sshpkt_get_u8(ssh, &single_connection)) != 0 ||  in session_x11_req()
1818 	    (r = sshpkt_get_cstring(ssh, &s->auth_proto, NULL)) != 0 ||  in session_x11_req()
1819 	    (r = sshpkt_get_cstring(ssh, &s->auth_data, NULL)) != 0 ||  in session_x11_req()
1820 	    (r = sshpkt_get_u32(ssh, &s->screen)) != 0 ||  in session_x11_req()
1821 	    (r = sshpkt_get_end(ssh)) != 0)  in session_x11_req()
1822 		sshpkt_fatal(ssh, r, "%s: parse packet", __func__);  in session_x11_req()
1828 		success = session_setup_x11fwd(ssh, s);  in session_x11_req()
1843 session_shell_req(struct ssh *ssh, Session *s)  in session_shell_req()  argument
1847 	if ((r = sshpkt_get_end(ssh)) != 0)  in session_shell_req()
1848 		sshpkt_fatal(ssh, r, "%s: parse packet", __func__);  in session_shell_req()
1850 	channel_set_xtype(ssh, s->chanid, "session:shell");  in session_shell_req()
1852 	return do_exec(ssh, s, NULL) == 0;  in session_shell_req()
1856 session_exec_req(struct ssh *ssh, Session *s)  in session_exec_req()  argument
1862 	if ((r = sshpkt_get_cstring(ssh, &command, NULL)) != 0 ||  in session_exec_req()
1863 	    (r = sshpkt_get_end(ssh)) != 0)  in session_exec_req()
1864 		sshpkt_fatal(ssh, r, "%s: parse packet", __func__);  in session_exec_req()
1866 	channel_set_xtype(ssh, s->chanid, "session:command");  in session_exec_req()
1868 	success = do_exec(ssh, s, command) == 0;  in session_exec_req()
1874 session_break_req(struct ssh *ssh, Session *s)  in session_break_req()  argument
1878 	if ((r = sshpkt_get_u32(ssh, NULL)) != 0 || /* ignore */  in session_break_req()
1879 	    (r = sshpkt_get_end(ssh)) != 0)  in session_break_req()
1880 		sshpkt_fatal(ssh, r, "%s: parse packet", __func__);  in session_break_req()
1888 session_env_req(struct ssh *ssh, Session *s)  in session_env_req()  argument
1894 	if ((r = sshpkt_get_cstring(ssh, &name, NULL)) != 0 ||  in session_env_req()
1895 	    (r = sshpkt_get_cstring(ssh, &val, NULL)) != 0 ||  in session_env_req()
1896 	    (r = sshpkt_get_end(ssh)) != 0)  in session_env_req()
1897 		sshpkt_fatal(ssh, r, "%s: parse packet", __func__);  in session_env_req()
1947 session_signal_req(struct ssh *ssh, Session *s)  in session_signal_req()  argument
1952 	if ((r = sshpkt_get_cstring(ssh, &signame, NULL)) != 0 ||  in session_signal_req()
1953 	    (r = sshpkt_get_end(ssh)) != 0) {  in session_signal_req()
1993 session_auth_agent_req(struct ssh *ssh, Session *s)  in session_auth_agent_req()  argument
1998 	if ((r = sshpkt_get_end(ssh)) != 0)  in session_auth_agent_req()
1999 		sshpkt_fatal(ssh, r, "%s: parse packet", __func__);  in session_auth_agent_req()
2009 		return auth_input_request_forwarding(ssh, s->pw);  in session_auth_agent_req()
2014 session_input_channel_req(struct ssh *ssh, Channel *c, const char *rtype)  in session_input_channel_req()  argument
2031 			success = session_shell_req(ssh, s);  in session_input_channel_req()
2033 			success = session_exec_req(ssh, s);  in session_input_channel_req()
2035 			success = session_pty_req(ssh, s);  in session_input_channel_req()
2037 			success = session_x11_req(ssh, s);  in session_input_channel_req()
2039 			success = session_auth_agent_req(ssh, s);  in session_input_channel_req()
2041 			success = session_subsystem_req(ssh, s);  in session_input_channel_req()
2043 			success = session_env_req(ssh, s);  in session_input_channel_req()
2047 		success = session_window_change_req(ssh, s);  in session_input_channel_req()
2049 		success = session_break_req(ssh, s);  in session_input_channel_req()
2051 		success = session_signal_req(ssh, s);  in session_input_channel_req()
2058 session_set_fds(struct ssh *ssh, Session *s,  in session_set_fds()  argument
2068 	channel_set_fds(ssh, s->chanid,  in session_set_fds()
2073 		channel_set_fds(ssh, s->chanid,  in session_set_fds()
2144 session_close_x11(struct ssh *ssh, int id)  in session_close_x11()  argument
2148 	if ((c = channel_by_id(ssh, id)) == NULL) {  in session_close_x11()
2153 		channel_cancel_cleanup(ssh, id);  in session_close_x11()
2155 			chan_mark_dead(ssh, c);  in session_close_x11()
2160 session_close_single_x11(struct ssh *ssh, int id, int force, void *arg)  in session_close_single_x11()  argument
2166 	channel_cancel_cleanup(ssh, id);  in session_close_single_x11()
2177 			session_close_x11(ssh, s->x11_chanids[i]);  in session_close_single_x11()
2192 session_exit_message(struct ssh *ssh, Session *s, int status)  in session_exit_message()  argument
2198 	if ((c = channel_lookup(ssh, s->chanid)) == NULL)  in session_exit_message()
2202 		channel_request_start(ssh, s->chanid, "exit-status", 0);  in session_exit_message()
2203 		if ((r = sshpkt_put_u32(ssh, WEXITSTATUS(status))) != 0 ||  in session_exit_message()
2204 		    (r = sshpkt_send(ssh)) != 0)  in session_exit_message()
2205 			sshpkt_fatal(ssh, r, "%s: exit reply", __func__);  in session_exit_message()
2208 		channel_request_start(ssh, s->chanid, "exit-signal", 0);  in session_exit_message()
2209 		if ((r = sshpkt_put_cstring(ssh, sig2name(WTERMSIG(status)))) != 0 ||  in session_exit_message()
2210 		    (r = sshpkt_put_u8(ssh, WCOREDUMP(status)? 1 : 0)) != 0 ||  in session_exit_message()
2211 		    (r = sshpkt_put_cstring(ssh, "")) != 0 ||  in session_exit_message()
2212 		    (r = sshpkt_put_cstring(ssh, "")) != 0 ||  in session_exit_message()
2213 		    (r = sshpkt_send(ssh)) != 0)  in session_exit_message()
2214 			sshpkt_fatal(ssh, r, "%s: exit reply", __func__);  in session_exit_message()
2219 		ssh_packet_disconnect(ssh, "wait returned status %04x.",  in session_exit_message()
2235 	channel_register_cleanup(ssh, c->self, session_close_by_channel, 1);  in session_exit_message()
2244 		chan_write_failed(ssh, c);  in session_exit_message()
2248 session_close(struct ssh *ssh, Session *s)  in session_close()  argument
2254 	    ssh_remote_ipaddr(ssh),  in session_close()
2255 	    ssh_remote_port(ssh),  in session_close()
2279 session_close_by_pid(struct ssh *ssh, pid_t pid, int status)  in session_close_by_pid()  argument
2287 		session_exit_message(ssh, s, status);  in session_close_by_pid()
2298 session_close_by_channel(struct ssh *ssh, int id, int force, void *arg)  in session_close_by_channel()  argument
2321 	channel_cancel_cleanup(ssh, s->chanid);  in session_close_by_channel()
2326 			session_close_x11(ssh, s->x11_chanids[i]);  in session_close_by_channel()
2332 	session_close(ssh, s);  in session_close_by_channel()
2336 session_destroy_all(struct ssh *ssh, void (*closefunc)(Session *))  in session_destroy_all()  argument
2345 				session_close(ssh, s);  in session_destroy_all()
2388 session_setup_x11fwd(struct ssh *ssh, Session *s)  in session_setup_x11fwd()  argument
2396 		ssh_packet_send_debug(ssh, "X11 forwarding disabled by key options.");  in session_setup_x11fwd()
2405 		ssh_packet_send_debug(ssh, "No xauth program; cannot forward X11.");  in session_setup_x11fwd()
2412 	if (x11_create_display_inet(ssh, options.x11_display_offset,  in session_setup_x11fwd()
2419 		channel_register_cleanup(ssh, s->x11_chanids[i],  in session_setup_x11fwd()
2449 do_authenticated2(struct ssh *ssh, Authctxt *authctxt)  in do_authenticated2()  argument
2451 	server_loop2(ssh, authctxt);  in do_authenticated2()
2455 do_cleanup(struct ssh *ssh, Authctxt *authctxt)  in do_cleanup()  argument
2511 		session_destroy_all(ssh, session_pty_cleanup2);  in do_cleanup()
2517 session_get_remote_name_or_ip(struct ssh *ssh, u_int utmp_size, int use_dns)  in session_get_remote_name_or_ip()  argument
2522 		remote = auth_get_canonical_hostname(ssh, use_dns);  in session_get_remote_name_or_ip()
2524 		remote = ssh_remote_ipaddr(ssh);  in session_get_remote_name_or_ip()