1 files changed, 0 insertions, 479 deletions
diff --git a/protocols/Telegram/tgl/libevent/signal.c b/protocols/Telegram/tgl/libevent/signal.c
deleted file mode 100644
index 3f46295024..0000000000
--- a/protocols/Telegram/tgl/libevent/signal.c
+++ /dev/null
@@ -1,479 +0,0 @@
-/*	$OpenBSD: select.c,v 1.2 2002/06/25 15:50:15 mickey Exp $	*/
-
-/*
- * Copyright 2000-2007 Niels Provos <provos@citi.umich.edu>
- * Copyright 2007-2012 Niels Provos and Nick Mathewson
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-#include "event2/event-config.h"
-#include "evconfig-private.h"
-
-#ifdef _WIN32
-#define WIN32_LEAN_AND_MEAN
-#include <winsock2.h>
-#include <windows.h>
-#undef WIN32_LEAN_AND_MEAN
-#endif
-#include <sys/types.h>
-#ifdef EVENT__HAVE_SYS_TIME_H
-#include <sys/time.h>
-#endif
-#include <sys/queue.h>
-#ifdef EVENT__HAVE_SYS_SOCKET_H
-#include <sys/socket.h>
-#endif
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#ifdef EVENT__HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <errno.h>
-#ifdef EVENT__HAVE_FCNTL_H
-#include <fcntl.h>
-#endif
-
-#include "event2/event.h"
-#include "event2/event_struct.h"
-#include "event-internal.h"
-#include "event2/util.h"
-#include "evsignal-internal.h"
-#include "log-internal.h"
-#include "evmap-internal.h"
-#include "evthread-internal.h"
-
-/*
-  signal.c
-
-  This is the signal-handling implementation we use for backends that don't
-  have a better way to do signal handling.  It uses sigaction() or signal()
-  to set a signal handler, and a socket pair to tell the event base when
-
-  Note that I said "the event base" : only one event base can be set up to use
-  this at a time.  For historical reasons and backward compatibility, if you
-  add an event for a signal to event_base A, then add an event for a signal
-  (any signal!) to event_base B, event_base B will get informed about the
-  signal, but event_base A won't.
-
-  It would be neat to change this behavior in some future version of Libevent.
-  kqueue already does something far more sensible.  We can make all backends
-  on Linux do a reasonable thing using signalfd.
-*/
-
-#ifndef _WIN32
-/* Windows wants us to call our signal handlers as __cdecl.  Nobody else
- * expects you to do anything crazy like this. */
-#define __cdecl
-#endif
-
-static int evsig_add(struct event_base *, evutil_socket_t, short, short, void *);
-static int evsig_del(struct event_base *, evutil_socket_t, short, short, void *);
-
-static const struct eventop evsigops = {
-	"signal",
-	NULL,
-	evsig_add,
-	evsig_del,
-	NULL,
-	NULL,
-	0, 0, 0
-};
-
-#ifndef EVENT__DISABLE_THREAD_SUPPORT
-/* Lock for evsig_base and evsig_base_n_signals_added fields. */
-static void *evsig_base_lock = NULL;
-#endif
-/* The event base that's currently getting informed about signals. */
-static struct event_base *evsig_base = NULL;
-/* A copy of evsig_base->sigev_n_signals_added. */
-static int evsig_base_n_signals_added = 0;
-static evutil_socket_t evsig_base_fd = -1;
-
-static void __cdecl evsig_handler(int sig);
-
-#define EVSIGBASE_LOCK() EVLOCK_LOCK(evsig_base_lock, 0)
-#define EVSIGBASE_UNLOCK() EVLOCK_UNLOCK(evsig_base_lock, 0)
-
-void
-evsig_set_base_(struct event_base *base)
-{
-	EVSIGBASE_LOCK();
-	evsig_base = base;
-	evsig_base_n_signals_added = base->sig.ev_n_signals_added;
-	evsig_base_fd = base->sig.ev_signal_pair[1];
-	EVSIGBASE_UNLOCK();
-}
-
-/* Callback for when the signal handler write a byte to our signaling socket */
-static void
-evsig_cb(evutil_socket_t fd, short what, void *arg)
-{
-	static char signals[1024];
-	ev_ssize_t n;
-	int i;
-	int ncaught[NSIG];
-	struct event_base *base;
-
-	base = arg;
-
-	memset(&ncaught, 0, sizeof(ncaught));
-
-	while (1) {
-#ifdef _WIN32
-		n = recv(fd, signals, sizeof(signals), 0);
-#else
-		n = read(fd, signals, sizeof(signals));
-#endif
-		if (n == -1) {
-			int err = evutil_socket_geterror(fd);
-			if (! EVUTIL_ERR_RW_RETRIABLE(err))
-				event_sock_err(1, fd, "%s: recv", __func__);
-			break;
-		} else if (n == 0) {
-			/* XXX warn? */
-			break;
-		}
-		for (i = 0; i < n; ++i) {
-			ev_uint8_t sig = signals[i];
-			if (sig < NSIG)
-				ncaught[sig]++;
-		}
-	}
-
-	EVBASE_ACQUIRE_LOCK(base, th_base_lock);
-	for (i = 0; i < NSIG; ++i) {
-		if (ncaught[i])
-			evmap_signal_active_(base, i, ncaught[i]);
-	}
-	EVBASE_RELEASE_LOCK(base, th_base_lock);
-}
-
-int
-evsig_init_(struct event_base *base)
-{
-	/*
-	 * Our signal handler is going to write to one end of the socket
-	 * pair to wake up our event loop.  The event loop then scans for
-	 * signals that got delivered.
-	 */
-	if (evutil_make_internal_pipe_(base->sig.ev_signal_pair) == -1) {
-#ifdef _WIN32
-		/* Make this nonfatal on win32, where sometimes people
-		   have localhost firewalled. */
-		event_sock_warn(-1, "%s: socketpair", __func__);
-#else
-		event_sock_err(1, -1, "%s: socketpair", __func__);
-#endif
-		return -1;
-	}
-
-	if (base->sig.sh_old) {
-		mm_free(base->sig.sh_old);
-	}
-	base->sig.sh_old = NULL;
-	base->sig.sh_old_max = 0;
-
-	event_assign(&base->sig.ev_signal, base, base->sig.ev_signal_pair[0],
-		EV_READ | EV_PERSIST, evsig_cb, base);
-
-	base->sig.ev_signal.ev_flags |= EVLIST_INTERNAL;
-	event_priority_set(&base->sig.ev_signal, 0);
-
-	base->evsigsel = &evsigops;
-
-	return 0;
-}
-
-/* Helper: set the signal handler for evsignal to handler in base, so that
- * we can restore the original handler when we clear the current one. */
-int
-evsig_set_handler_(struct event_base *base,
-    int evsignal, void (__cdecl *handler)(int))
-{
-#ifdef EVENT__HAVE_SIGACTION
-	struct sigaction sa;
-#else
-	ev_sighandler_t sh;
-#endif
-	struct evsig_info *sig = &base->sig;
-	void *p;
-
-	/*
-	 * resize saved signal handler array up to the highest signal number.
-	 * a dynamic array is used to keep footprint on the low side.
-	 */
-	if (evsignal >= sig->sh_old_max) {
-		int new_max = evsignal + 1;
-		event_debug(("%s: evsignal (%d) >= sh_old_max (%d), resizing",
-			    __func__, evsignal, sig->sh_old_max));
-		p = mm_realloc(sig->sh_old, new_max * sizeof(*sig->sh_old));
-		if (p == NULL) {
-			event_warn("realloc");
-			return (-1);
-		}
-
-		memset((char *)p + sig->sh_old_max * sizeof(*sig->sh_old),
-		    0, (new_max - sig->sh_old_max) * sizeof(*sig->sh_old));
-
-		sig->sh_old_max = new_max;
-		sig->sh_old = p;
-	}
-
-	/* allocate space for previous handler out of dynamic array */
-	sig->sh_old[evsignal] = mm_malloc(sizeof *sig->sh_old[evsignal]);
-	if (sig->sh_old[evsignal] == NULL) {
-		event_warn("malloc");
-		return (-1);
-	}
-
-	/* save previous handler and setup new handler */
-#ifdef EVENT__HAVE_SIGACTION
-	memset(&sa, 0, sizeof(sa));
-	sa.sa_handler = handler;
-	sa.sa_flags |= SA_RESTART;
-	sigfillset(&sa.sa_mask);
-
-	if (sigaction(evsignal, &sa, sig->sh_old[evsignal]) == -1) {
-		event_warn("sigaction");
-		mm_free(sig->sh_old[evsignal]);
-		sig->sh_old[evsignal] = NULL;
-		return (-1);
-	}
-#else
-	if ((sh = signal(evsignal, handler)) == SIG_ERR) {
-		event_warn("signal");
-		mm_free(sig->sh_old[evsignal]);
-		sig->sh_old[evsignal] = NULL;
-		return (-1);
-	}
-	*sig->sh_old[evsignal] = sh;
-#endif
-
-	return (0);
-}
-
-static int
-evsig_add(struct event_base *base, evutil_socket_t evsignal, short old, short events, void *p)
-{
-	struct evsig_info *sig = &base->sig;
-	(void)p;
-
-	EVUTIL_ASSERT(evsignal >= 0 && evsignal < NSIG);
-
-	/* catch signals if they happen quickly */
-	EVSIGBASE_LOCK();
-	if (evsig_base != base && evsig_base_n_signals_added) {
-		event_warnx("Added a signal to event base %p with signals "
-		    "already added to event_base %p.  Only one can have "
-		    "signals at a time with the %s backend.  The base with "
-		    "the most recently added signal or the most recent "
-		    "event_base_loop() call gets preference; do "
-		    "not rely on this behavior in future Libevent versions.",
-		    base, evsig_base, base->evsel->name);
-	}
-	evsig_base = base;
-	evsig_base_n_signals_added = ++sig->ev_n_signals_added;
-	evsig_base_fd = base->sig.ev_signal_pair[1];
-	EVSIGBASE_UNLOCK();
-
-	event_debug(("%s: %d: changing signal handler", __func__, (int)evsignal));
-	if (evsig_set_handler_(base, (int)evsignal, evsig_handler) == -1) {
-		goto err;
-	}
-
-
-	if (!sig->ev_signal_added) {
-		if (event_add_nolock_(&sig->ev_signal, NULL, 0))
-			goto err;
-		sig->ev_signal_added = 1;
-	}
-
-	return (0);
-
-err:
-	EVSIGBASE_LOCK();
-	--evsig_base_n_signals_added;
-	--sig->ev_n_signals_added;
-	EVSIGBASE_UNLOCK();
-	return (-1);
-}
-
-int
-evsig_restore_handler_(struct event_base *base, int evsignal)
-{
-	int ret = 0;
-	struct evsig_info *sig = &base->sig;
-#ifdef EVENT__HAVE_SIGACTION
-	struct sigaction *sh;
-#else
-	ev_sighandler_t *sh;
-#endif
-
-	if (evsignal >= sig->sh_old_max) {
-		/* Can't actually restore. */
-		/* XXXX.*/
-		return 0;
-	}
-
-	/* restore previous handler */
-	sh = sig->sh_old[evsignal];
-	sig->sh_old[evsignal] = NULL;
-#ifdef EVENT__HAVE_SIGACTION
-	if (sigaction(evsignal, sh, NULL) == -1) {
-		event_warn("sigaction");
-		ret = -1;
-	}
-#else
-	if (signal(evsignal, *sh) == SIG_ERR) {
-		event_warn("signal");
-		ret = -1;
-	}
-#endif
-
-	mm_free(sh);
-
-	return ret;
-}
-
-static int
-evsig_del(struct event_base *base, evutil_socket_t evsignal, short old, short events, void *p)
-{
-	EVUTIL_ASSERT(evsignal >= 0 && evsignal < NSIG);
-
-	event_debug(("%s: "EV_SOCK_FMT": restoring signal handler",
-		__func__, EV_SOCK_ARG(evsignal)));
-
-	EVSIGBASE_LOCK();
-	--evsig_base_n_signals_added;
-	--base->sig.ev_n_signals_added;
-	EVSIGBASE_UNLOCK();
-
-	return (evsig_restore_handler_(base, (int)evsignal));
-}
-
-static void __cdecl
-evsig_handler(int sig)
-{
-	int save_errno = errno;
-#ifdef _WIN32
-	int socket_errno = EVUTIL_SOCKET_ERROR();
-#endif
-	ev_uint8_t msg;
-
-	if (evsig_base == NULL) {
-		event_warnx(
-			"%s: received signal %d, but have no base configured",
-			__func__, sig);
-		return;
-	}
-
-#ifndef EVENT__HAVE_SIGACTION
-	signal(sig, evsig_handler);
-#endif
-
-	/* Wake up our notification mechanism */
-	msg = sig;
-#ifdef _WIN32
-	send(evsig_base_fd, (char*)&msg, 1, 0);
-#else
-	{
-		int r = write(evsig_base_fd, (char*)&msg, 1);
-		(void)r; /* Suppress 'unused return value' and 'unused var' */
-	}
-#endif
-	errno = save_errno;
-#ifdef _WIN32
-	EVUTIL_SET_SOCKET_ERROR(socket_errno);
-#endif
-}
-
-void
-evsig_dealloc_(struct event_base *base)
-{
-	int i = 0;
-	if (base->sig.ev_signal_added) {
-		event_del(&base->sig.ev_signal);
-		base->sig.ev_signal_added = 0;
-	}
-	/* debug event is created in evsig_init_/event_assign even when
-	 * ev_signal_added == 0, so unassign is required */
-	event_debug_unassign(&base->sig.ev_signal);
-
-	for (i = 0; i < NSIG; ++i) {
-		if (i < base->sig.sh_old_max && base->sig.sh_old[i] != NULL)
-			evsig_restore_handler_(base, i);
-	}
-	EVSIGBASE_LOCK();
-	if (base == evsig_base) {
-		evsig_base = NULL;
-		evsig_base_n_signals_added = 0;
-		evsig_base_fd = -1;
-	}
-	EVSIGBASE_UNLOCK();
-
-	if (base->sig.ev_signal_pair[0] != -1) {
-		evutil_closesocket(base->sig.ev_signal_pair[0]);
-		base->sig.ev_signal_pair[0] = -1;
-	}
-	if (base->sig.ev_signal_pair[1] != -1) {
-		evutil_closesocket(base->sig.ev_signal_pair[1]);
-		base->sig.ev_signal_pair[1] = -1;
-	}
-	base->sig.sh_old_max = 0;
-
-	/* per index frees are handled in evsig_del() */
-	if (base->sig.sh_old) {
-		mm_free(base->sig.sh_old);
-		base->sig.sh_old = NULL;
-	}
-}
-
-static void
-evsig_free_globals_locks(void)
-{
-#ifndef EVENT__DISABLE_THREAD_SUPPORT
-	if (evsig_base_lock != NULL) {
-		EVTHREAD_FREE_LOCK(evsig_base_lock, 0);
-		evsig_base_lock = NULL;
-	}
-#endif
-	return;
-}
-
-void
-evsig_free_globals_(void)
-{
-	evsig_free_globals_locks();
-}
-
-#ifndef EVENT__DISABLE_THREAD_SUPPORT
-int
-evsig_global_setup_locks_(const int enable_locks)
-{
-	EVTHREAD_SETUP_GLOBAL_LOCK(evsig_base_lock, 0);
-	return 0;
-}
-
-#endif