X-Git-Url: http://andersk.mit.edu/gitweb/gssapi-openssh.git/blobdiff_plain/a7213e650521b1d30dd258aef112591b6f5f7827..8d212d56428a6f99849ad239d25a7a0995ca59d8:/openssh/clientloop.c diff --git a/openssh/clientloop.c b/openssh/clientloop.c index 3089bcf..2f7ce2b 100644 --- a/openssh/clientloop.c +++ b/openssh/clientloop.c @@ -1,3 +1,4 @@ +/* $OpenBSD: clientloop.c,v 1.176 2006/10/11 12:38:03 markus Exp $ */ /* * Author: Tatu Ylonen * Copyright (c) 1995 Tatu Ylonen , Espoo, Finland @@ -59,20 +60,43 @@ */ #include "includes.h" -RCSID("$OpenBSD: clientloop.c,v 1.149 2005/12/30 15:56:37 reyk Exp $"); +#include +#include +#include +#ifdef HAVE_SYS_STAT_H +# include +#endif +#ifdef HAVE_SYS_TIME_H +# include +#endif +#include + +#include +#include +#ifdef HAVE_PATHS_H +#include +#endif +#include +#include +#include +#include +#include +#include +#include +#include + +#include "xmalloc.h" #include "ssh.h" #include "ssh1.h" #include "ssh2.h" -#include "xmalloc.h" #include "packet.h" #include "buffer.h" #include "compat.h" #include "channels.h" #include "dispatch.h" -#include "buffer.h" -#include "bufaux.h" #include "key.h" +#include "cipher.h" #include "kex.h" #include "log.h" #include "readconf.h" @@ -118,7 +142,7 @@ static volatile sig_atomic_t received_signal = 0; static int in_non_blocking_mode = 0; /* Common data for the client loop code. */ -static int quit_pending; /* Set to non-zero to quit the client loop. */ +static volatile sig_atomic_t quit_pending; /* Set non-zero to quit the loop. */ static int escape_char; /* Escape character. */ static int escape_pending; /* Last character was the escape character */ static int last_was_cr; /* Last character was a newline. */ @@ -178,7 +202,7 @@ enter_non_blocking(void) * Signal handler for the window change signal (SIGWINCH). This just sets a * flag indicating that the window has changed. */ - +/*ARGSUSED */ static void window_change_handler(int sig) { @@ -190,7 +214,7 @@ window_change_handler(int sig) * Signal handler for signals that cause the program to terminate. These * signals must be trapped to restore terminal modes. */ - +/*ARGSUSED */ static void signal_handler(int sig) { @@ -422,10 +446,10 @@ client_check_window_change(void) if (ioctl(fileno(stdin), TIOCGWINSZ, &ws) < 0) return; packet_start(SSH_CMSG_WINDOW_SIZE); - packet_put_int(ws.ws_row); - packet_put_int(ws.ws_col); - packet_put_int(ws.ws_xpixel); - packet_put_int(ws.ws_ypixel); + packet_put_int((u_int)ws.ws_row); + packet_put_int((u_int)ws.ws_col); + packet_put_int((u_int)ws.ws_xpixel); + packet_put_int((u_int)ws.ws_ypixel); packet_send(); } } @@ -440,8 +464,10 @@ client_global_request_reply(int type, u_int32_t seq, void *ctxt) static void server_alive_check(void) { - if (++server_alive_timeouts > options.server_alive_count_max) - packet_disconnect("Timeout, server not responding."); + if (++server_alive_timeouts > options.server_alive_count_max) { + logit("Timeout, server not responding."); + cleanup_exit(255); + } packet_start(SSH2_MSG_GLOBAL_REQUEST); packet_put_cstring("keepalive@openssh.com"); packet_put_char(1); /* boolean: want reply */ @@ -569,7 +595,7 @@ client_suspend_self(Buffer *bin, Buffer *bout, Buffer *berr) } static void -client_process_net_input(fd_set * readset) +client_process_net_input(fd_set *readset) { int len; char buf[8192]; @@ -677,7 +703,7 @@ client_extra_session2_setup(int id, void *arg) } static void -client_process_control(fd_set * readset) +client_process_control(fd_set *readset) { Buffer m; Channel *c; @@ -844,8 +870,7 @@ client_process_control(fd_set * readset) return; } - cctx = xmalloc(sizeof(*cctx)); - memset(cctx, 0, sizeof(*cctx)); + cctx = xcalloc(1, sizeof(*cctx)); cctx->want_tty = (flags & SSHMUX_FLAG_TTY) != 0; cctx->want_subsys = (flags & SSHMUX_FLAG_SUBSYS) != 0; cctx->want_x_fwd = (flags & SSHMUX_FLAG_X11_FWD) != 0; @@ -860,7 +885,7 @@ client_process_control(fd_set * readset) env_len = MIN(env_len, 4096); debug3("%s: receiving %d env vars", __func__, env_len); if (env_len != 0) { - cctx->env = xmalloc(sizeof(*cctx->env) * (env_len + 1)); + cctx->env = xcalloc(env_len + 1, sizeof(*cctx->env)); for (i = 0; i < env_len; i++) cctx->env[i] = buffer_get_string(&m, &len); cctx->env[i] = NULL; @@ -868,6 +893,7 @@ client_process_control(fd_set * readset) debug2("%s: accepted tty %d, subsys %d, cmd %s", __func__, cctx->want_tty, cctx->want_subsys, cmd); + xfree(cmd); /* Gather fds from client */ new_fd[0] = mm_receive_fd(client_fd); @@ -953,12 +979,16 @@ process_cmdline(void) if (*s == 'h' || *s == 'H' || *s == '?') { logit("Commands:"); - logit(" -Lport:host:hostport Request local forward"); - logit(" -Rport:host:hostport Request remote forward"); - logit(" -KRhostport Cancel remote forward"); + logit(" -L[bind_address:]port:host:hostport " + "Request local forward"); + logit(" -R[bind_address:]port:host:hostport " + "Request remote forward"); + logit(" -KR[bind_address:]port " + "Cancel remote forward"); if (!options.permit_local_command) goto out; - logit(" !args Execute local command"); + logit(" !args " + "Execute local command"); goto out; } @@ -1020,9 +1050,12 @@ process_cmdline(void) goto out; } } else { - channel_request_remote_forwarding(fwd.listen_host, + if (channel_request_remote_forwarding(fwd.listen_host, fwd.listen_port, fwd.connect_host, - fwd.connect_port); + fwd.connect_port) < 0) { + logit("Port forwarding failed."); + goto out; + } } logit("Forwarding port."); @@ -1214,7 +1247,7 @@ Supported escape sequences:\r\n\ } static void -client_process_input(fd_set * readset) +client_process_input(fd_set *readset) { int len; char buf[8192]; @@ -1267,7 +1300,7 @@ client_process_input(fd_set * readset) } static void -client_process_output(fd_set * writeset) +client_process_output(fd_set *writeset) { int len; char buf[100]; @@ -1928,10 +1961,10 @@ client_session2_setup(int id, int want_tty, int want_subsystem, channel_request_start(id, "pty-req", 0); packet_put_cstring(term != NULL ? term : ""); - packet_put_int(ws.ws_col); - packet_put_int(ws.ws_row); - packet_put_int(ws.ws_xpixel); - packet_put_int(ws.ws_ypixel); + packet_put_int((u_int)ws.ws_col); + packet_put_int((u_int)ws.ws_row); + packet_put_int((u_int)ws.ws_xpixel); + packet_put_int((u_int)ws.ws_ypixel); tio = get_saved_tio(); tty_make_modes(-1, tiop != NULL ? tiop : &tio); packet_send();