Add libevent-2.0.22-stable code
Existing NOTICE and MODULE_LICENSE_BSD_LIKE files describe this code.
Removed the following directories to reduce size:
WIN32-Code/*
compat/*
m4/*
sample/*
test/*
Bug: 22229743
Change-Id: I1f32e0e7467edaa3c5ea5991b5bbec2db50762ff
diff --git a/log.c b/log.c
new file mode 100644
index 0000000..046e81f
--- /dev/null
+++ b/log.c
@@ -0,0 +1,224 @@
+/* $OpenBSD: err.c,v 1.2 2002/06/25 15:50:15 mickey Exp $ */
+
+/*
+ * log.c
+ *
+ * Based on err.c, which was adapted from OpenBSD libc *err* *warn* code.
+ *
+ * Copyright (c) 2005-2012 Niels Provos and Nick Mathewson
+ *
+ * Copyright (c) 2000 Dug Song <dugsong@monkey.org>
+ *
+ * Copyright (c) 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * 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. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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"
+
+#ifdef WIN32
+#include <winsock2.h>
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#undef WIN32_LEAN_AND_MEAN
+#endif
+#include <sys/types.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <errno.h>
+#include "event2/event.h"
+#include "event2/util.h"
+
+#include "log-internal.h"
+
+static void _warn_helper(int severity, const char *errstr, const char *fmt,
+ va_list ap);
+static void event_log(int severity, const char *msg);
+static void event_exit(int errcode) EV_NORETURN;
+
+static event_fatal_cb fatal_fn = NULL;
+
+void
+event_set_fatal_callback(event_fatal_cb cb)
+{
+ fatal_fn = cb;
+}
+
+static void
+event_exit(int errcode)
+{
+ if (fatal_fn) {
+ fatal_fn(errcode);
+ exit(errcode); /* should never be reached */
+ } else if (errcode == _EVENT_ERR_ABORT)
+ abort();
+ else
+ exit(errcode);
+}
+
+void
+event_err(int eval, const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ _warn_helper(_EVENT_LOG_ERR, strerror(errno), fmt, ap);
+ va_end(ap);
+ event_exit(eval);
+}
+
+void
+event_warn(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ _warn_helper(_EVENT_LOG_WARN, strerror(errno), fmt, ap);
+ va_end(ap);
+}
+
+void
+event_sock_err(int eval, evutil_socket_t sock, const char *fmt, ...)
+{
+ va_list ap;
+ int err = evutil_socket_geterror(sock);
+
+ va_start(ap, fmt);
+ _warn_helper(_EVENT_LOG_ERR, evutil_socket_error_to_string(err), fmt, ap);
+ va_end(ap);
+ event_exit(eval);
+}
+
+void
+event_sock_warn(evutil_socket_t sock, const char *fmt, ...)
+{
+ va_list ap;
+ int err = evutil_socket_geterror(sock);
+
+ va_start(ap, fmt);
+ _warn_helper(_EVENT_LOG_WARN, evutil_socket_error_to_string(err), fmt, ap);
+ va_end(ap);
+}
+
+void
+event_errx(int eval, const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ _warn_helper(_EVENT_LOG_ERR, NULL, fmt, ap);
+ va_end(ap);
+ event_exit(eval);
+}
+
+void
+event_warnx(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ _warn_helper(_EVENT_LOG_WARN, NULL, fmt, ap);
+ va_end(ap);
+}
+
+void
+event_msgx(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ _warn_helper(_EVENT_LOG_MSG, NULL, fmt, ap);
+ va_end(ap);
+}
+
+void
+_event_debugx(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ _warn_helper(_EVENT_LOG_DEBUG, NULL, fmt, ap);
+ va_end(ap);
+}
+
+static void
+_warn_helper(int severity, const char *errstr, const char *fmt, va_list ap)
+{
+ char buf[1024];
+ size_t len;
+
+ if (fmt != NULL)
+ evutil_vsnprintf(buf, sizeof(buf), fmt, ap);
+ else
+ buf[0] = '\0';
+
+ if (errstr) {
+ len = strlen(buf);
+ if (len < sizeof(buf) - 3) {
+ evutil_snprintf(buf + len, sizeof(buf) - len, ": %s", errstr);
+ }
+ }
+
+ event_log(severity, buf);
+}
+
+static event_log_cb log_fn = NULL;
+
+void
+event_set_log_callback(event_log_cb cb)
+{
+ log_fn = cb;
+}
+
+static void
+event_log(int severity, const char *msg)
+{
+ if (log_fn)
+ log_fn(severity, msg);
+ else {
+ const char *severity_str;
+ switch (severity) {
+ case _EVENT_LOG_DEBUG:
+ severity_str = "debug";
+ break;
+ case _EVENT_LOG_MSG:
+ severity_str = "msg";
+ break;
+ case _EVENT_LOG_WARN:
+ severity_str = "warn";
+ break;
+ case _EVENT_LOG_ERR:
+ severity_str = "err";
+ break;
+ default:
+ severity_str = "???";
+ break;
+ }
+ (void)fprintf(stderr, "[%s] %s\n", severity_str, msg);
+ }
+}