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-rw-r--r--openvpn/sig.c345
1 files changed, 0 insertions, 345 deletions
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 <info@openvpn.net>
- *
- * 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;
-}
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