From fffd213c8cba2135afda493d797c41c10354770e Mon Sep 17 00:00:00 2001 From: Othmar Gsenger Date: Sat, 12 Apr 2008 11:38:42 +0000 Subject: big svn cleanup --- openvpn/sig.c | 345 ---------------------------------------------------------- 1 file changed, 345 deletions(-) delete mode 100644 openvpn/sig.c (limited to 'openvpn/sig.c') diff --git a/openvpn/sig.c b/openvpn/sig.c deleted file mode 100644 index efb3880..0000000 --- a/openvpn/sig.c +++ /dev/null @@ -1,345 +0,0 @@ -/* - * OpenVPN -- An application to securely tunnel IP networks - * over a single TCP/UDP port, with support for SSL/TLS-based - * session authentication and key exchange, - * packet encryption, packet authentication, and - * packet compression. - * - * Copyright (C) 2002-2005 OpenVPN Solutions LLC - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program (see the file COPYING included with this - * distribution); if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#ifdef WIN32 -#include "config-win32.h" -#else -#include "config.h" -#endif - -#include "syshead.h" - -#include "buffer.h" -#include "error.h" -#include "win32.h" -#include "init.h" -#include "status.h" -#include "sig.h" -#include "occ.h" -#include "manage.h" -#include "openvpn.h" - -#include "memdbg.h" - -/* Handle signals */ - -struct signal_info siginfo_static; /* GLOBAL */ - -struct signame { - int value; - const char *upper; - const char *lower; -}; - -static const struct signame signames[] = { - { SIGINT, "SIGINT", "sigint"}, - { SIGTERM, "SIGTERM", "sigterm" }, - { SIGHUP, "SIGHUP", "sighup" }, - { SIGUSR1, "SIGUSR1", "sigusr1" }, - { SIGUSR2, "SIGUSR2", "sigusr2" } -}; - -int -parse_signal (const char *signame) -{ - int i; - for (i = 0; i < (int)SIZE (signames); ++i) - { - if (!strcmp (signame, signames[i].upper)) - return signames[i].value; - } - return -1; -} - -const char * -signal_name (const int sig, const bool upper) -{ - int i; - for (i = 0; i < (int)SIZE (signames); ++i) - { - if (sig == signames[i].value) - return upper ? signames[i].upper : signames[i].lower; - } - return "UNKNOWN"; -} - -const char * -signal_description (const int signum, const char *sigtext) -{ - if (sigtext) - return sigtext; - else - return signal_name (signum, false); -} - -void -throw_signal (const int signum) -{ - siginfo_static.signal_received = signum; - siginfo_static.hard = true; -} - -static void -signal_reset (struct signal_info *si) -{ - if (si) - { - si->signal_received = 0; - si->signal_text = NULL; - si->hard = false; - } -} - -void -print_signal (const struct signal_info *si, const char *title, int msglevel) -{ - if (si) - { - const char *hs = (si->hard ? "hard" : "soft"); - const char *type = (si->signal_text ? si->signal_text : ""); - const char *t = (title ? title : "process"); - - switch (si->signal_received) - { - case SIGINT: - case SIGTERM: - msg (msglevel, "%s[%s,%s] received, %s exiting", - signal_name (si->signal_received, true), hs, type, t); - break; - case SIGHUP: - case SIGUSR1: - msg (msglevel, "%s[%s,%s] received, %s restarting", - signal_name (si->signal_received, true), hs, type, t); - break; - default: - msg (msglevel, "Unknown signal %d [%s,%s] received by %s", si->signal_received, hs, type, t); - break; - } - } - else - msg (msglevel, "Unknown signal received"); -} - -/* - * Call management interface with restart info - */ -void -signal_restart_status (const struct signal_info *si) -{ -#ifdef ENABLE_MANAGEMENT - if (management) - { - int state = -1; - switch (si->signal_received) - { - case SIGINT: - case SIGTERM: - state = OPENVPN_STATE_EXITING; - break; - case SIGHUP: - case SIGUSR1: - state = OPENVPN_STATE_RECONNECTING; - break; - } - - if (state >= 0) - management_set_state (management, - state, - si->signal_text ? si->signal_text : signal_name (si->signal_received, true), - (in_addr_t)0); - } -#endif -} - -#ifdef HAVE_SIGNAL_H - -/* normal signal handler, when we are in event loop */ -static void -signal_handler (const int signum) -{ - throw_signal (signum); - signal (signum, signal_handler); -} - -/* temporary signal handler, before we are fully initialized */ -static void -signal_handler_exit (const int signum) -{ - msg (M_FATAL, - "Signal %d (%s) received during initialization, exiting", - signum, signal_description (signum, NULL)); -} - -#endif - -void -pre_init_signal_catch (void) -{ -#ifdef HAVE_SIGNAL_H - signal (SIGINT, signal_handler); - signal (SIGTERM, signal_handler); - signal (SIGHUP, signal_handler); - signal (SIGUSR1, SIG_IGN); - signal (SIGUSR2, SIG_IGN); - signal (SIGPIPE, SIG_IGN); -#endif /* HAVE_SIGNAL_H */ -} - -void -post_init_signal_catch (void) -{ -#ifdef HAVE_SIGNAL_H - signal (SIGINT, signal_handler); - signal (SIGTERM, signal_handler); - signal (SIGHUP, signal_handler); - signal (SIGUSR1, signal_handler); - signal (SIGUSR2, signal_handler); - signal (SIGPIPE, SIG_IGN); -#endif /* HAVE_SIGNAL_H */ -} - -/* - * Print statistics. - * - * Triggered by SIGUSR2 or F2 on Windows. - */ -void -print_status (const struct context *c, struct status_output *so) -{ - struct gc_arena gc = gc_new (); - - status_reset (so); - - status_printf (so, PACKAGE_NAME " STATISTICS"); - status_printf (so, "Updated,%s", time_string (0, 0, false, &gc)); - status_printf (so, "TUN/TAP read bytes," counter_format, c->c2.tun_read_bytes); - status_printf (so, "TUN/TAP write bytes," counter_format, c->c2.tun_write_bytes); - status_printf (so, "TCP/UDP read bytes," counter_format, c->c2.link_read_bytes); - status_printf (so, "TCP/UDP write bytes," counter_format, c->c2.link_write_bytes); - status_printf (so, "Auth read bytes," counter_format, c->c2.link_read_bytes_auth); -#ifdef USE_LZO - if (c->options.comp_lzo) - lzo_print_stats (&c->c2.lzo_compwork, so); -#endif -#ifdef WIN32 - if (tuntap_defined (c->c1.tuntap)) - status_printf (so, "TAP-WIN32 driver status,\"%s\"", - tap_win32_getinfo (c->c1.tuntap, &gc)); -#endif - - status_printf (so, "END"); - status_flush (so); - gc_free (&gc); -} - -#ifdef ENABLE_OCC -/* - * Handle the triggering and time-wait of explicit - * exit notification. - */ - -static void -process_explicit_exit_notification_init (struct context *c) -{ - msg (M_INFO, "SIGTERM received, sending exit notification to peer"); - event_timeout_init (&c->c2.explicit_exit_notification_interval, 1, 0); - reset_coarse_timers (c); - signal_reset (c->sig); - halt_non_edge_triggered_signals (); - c->c2.explicit_exit_notification_time_wait = now; -} - -void -process_explicit_exit_notification_timer_wakeup (struct context *c) -{ - if (event_timeout_trigger (&c->c2.explicit_exit_notification_interval, - &c->c2.timeval, - ETT_DEFAULT)) - { - ASSERT (c->c2.explicit_exit_notification_time_wait && c->options.explicit_exit_notification); - if (now >= c->c2.explicit_exit_notification_time_wait + c->options.explicit_exit_notification) - { - event_timeout_clear (&c->c2.explicit_exit_notification_interval); - c->sig->signal_received = SIGTERM; - c->sig->signal_text = "exit-with-notification"; - } - else - { - c->c2.occ_op = OCC_EXIT; - } - } -} -#endif - -/* - * Process signals - */ - -void -remap_signal (struct context *c) -{ - if (c->sig->signal_received == SIGUSR1 && c->options.remap_sigusr1) - c->sig->signal_received = c->options.remap_sigusr1; -} - -static void -process_sigusr2 (const struct context *c) -{ - struct status_output *so = status_open (NULL, 0, M_INFO, NULL, 0); - print_status (c, so); - status_close (so); - signal_reset (c->sig); -} - -static bool -process_sigterm (struct context *c) -{ - bool ret = true; -#ifdef ENABLE_OCC - if (c->options.explicit_exit_notification - && !c->c2.explicit_exit_notification_time_wait) - { - process_explicit_exit_notification_init (c); - ret = false; - } -#endif - return ret; -} - -bool -process_signal (struct context *c) -{ - bool ret = true; - - if (c->sig->signal_received == SIGTERM || c->sig->signal_received == SIGINT) - { - ret = process_sigterm (c); - } - else if (c->sig->signal_received == SIGUSR2) - { - process_sigusr2 (c); - ret = false; - } - return ret; -} -- cgit v1.2.3