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98 lines
2.6 KiB
C
98 lines
2.6 KiB
C
/*-
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* SSLsplit - transparent SSL/TLS interception
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* https://www.roe.ch/SSLsplit
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*
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* Copyright (c) 2009-2019, Daniel Roethlisberger <daniel@roe.ch>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "sys.h"
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <sys/uio.h>
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#include <sys/stat.h>
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#include <sys/file.h>
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#include <sys/un.h>
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#include <sys/time.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <netdb.h>
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#include <fcntl.h>
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#include <pwd.h>
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#include <grp.h>
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#include <fts.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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/*
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* Determine address family of addr
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*/
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int
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sys_get_af(const char *addr)
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{
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if (strstr(addr, ":"))
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return AF_INET6;
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else if (!strpbrk(addr, "abcdefghijklmnopqrstu"
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"vwxyzABCDEFGHIJKLMNOP"
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"QRSTUVWXYZ-"))
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return AF_INET;
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else
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return AF_UNSPEC;
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}
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static int sys_rand_seeded = 0;
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static void
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sys_rand_seed(void) {
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struct timeval seed;
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if (gettimeofday(&seed, NULL) == -1) {
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srandom((unsigned)time(NULL));
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} else {
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srandom((unsigned)(seed.tv_sec ^ seed.tv_usec));
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}
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sys_rand_seeded = 1;
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}
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uint16_t
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sys_rand16(void) {
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if (unlikely(!sys_rand_seeded))
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sys_rand_seed();
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return random();
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}
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uint32_t
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sys_rand32(void) {
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if (unlikely(!sys_rand_seeded))
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sys_rand_seed();
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return random();
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}
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/* vim: set noet ft=c: */
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