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/*-
* SSLsplit - transparent SSL/TLS interception
* https://www.roe.ch/SSLsplit
*
* Copyright (c) 2009-2019, Daniel Roethlisberger <daniel@roe.ch>.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER 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 COPYRIGHT HOLDER 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 "sys.h"
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/uio.h>
#include <sys/stat.h>
#include <sys/file.h>
#include <sys/un.h>
#include <sys/time.h>
#include <time.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netdb.h>
#include <fcntl.h>
#include <pwd.h>
#include <grp.h>
#include <fts.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
/*
* Determine address family of addr
*/
int sys_get_af(const char *addr) {
if(strstr(addr, ":"))
return AF_INET6;
else if(!strpbrk(addr,
"abcdefghijklmnopqrstu"
"vwxyzABCDEFGHIJKLMNOP"
"QRSTUVWXYZ-"))
return AF_INET;
else
return AF_UNSPEC;
}
static int sys_rand_seeded = 0;
static void sys_rand_seed(void) {
struct timeval seed;
if(gettimeofday(&seed, NULL) == -1) {
srandom((unsigned)time(NULL));
} else {
srandom((unsigned)(seed.tv_sec ^ seed.tv_usec));
}
sys_rand_seeded = 1;
}
uint16_t sys_rand16(void) {
if(unlikely(!sys_rand_seeded))
sys_rand_seed();
return random();
}
uint32_t sys_rand32(void) {
if(unlikely(!sys_rand_seeded))
sys_rand_seed();
return random();
}
/* vim: set noet ft=c: */
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