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/* $OpenBSD: evutil.c,v 1.11 2019/06/28 13:32:42 deraadt Exp $ */
/*
* Copyright (c) 2007 Niels Provos <provos@citi.umich.edu>
* 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. 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 <sys/types.h>
#include <sys/socket.h>
#include <sys/queue.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdlib.h>
#include <errno.h>
#include <stdio.h>
#include <signal.h>
#include "event.h"
#include "event-internal.h"
#include "evutil.h"
#include "log.h"
int
evutil_socketpair(int family, int type, int protocol, int fd[2])
{
return socketpair(family, type, protocol, fd);
}
int
evutil_make_socket_nonblocking(int fd)
{
int flags;
if ((flags = fcntl(fd, F_GETFL)) == -1) {
event_warn("fcntl(%d, F_GETFL)", fd);
return -1;
}
if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) == -1) {
event_warn("fcntl(%d, F_SETFL)", fd);
return -1;
}
return 0;
}
ev_int64_t
evutil_strtoll(const char *s, char **endptr, int base)
{
return (ev_int64_t)strtoll(s, endptr, base);
}
int
evutil_snprintf(char *buf, size_t buflen, const char *format, ...)
{
int r;
va_list ap;
va_start(ap, format);
r = evutil_vsnprintf(buf, buflen, format, ap);
va_end(ap);
return r;
}
int
evutil_vsnprintf(char *buf, size_t buflen, const char *format, va_list ap)
{
int r = vsnprintf(buf, buflen, format, ap);
buf[buflen-1] = '\0';
return r;
}
static int
evutil_issetugid(void)
{
return issetugid();
}
const char *
evutil_getenv(const char *varname)
{
if (evutil_issetugid())
return NULL;
return getenv(varname);
}
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