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/* rtp_helper.c
*
* Has some standard functions. !Red!
*
*
* Copyright (C) 2013 Tox project All Rights Reserved.
*
* This file is part of Tox.
*
* Tox is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Tox is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Tox. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif /* HAVE_CONFIG_H */
#include "toxrtp_helper.h"
#include "../toxcore/network.h"
#include <assert.h>
#ifdef WIN
#include <windows.h>
#endif /* WIN */
static int _seed = 0; /* Not initiated */
int t_setipport ( const char *_ip, unsigned short _port, void *_dest )
{
assert(_dest);
IP_Port *_dest_c = ( IP_Port * ) _dest;
ip_init(&_dest_c->ip, 0);
IP_Port _ipv6_garbage;
if ( !addr_resolve(_ip, &_dest_c->ip, &_ipv6_garbage.ip) )
return FAILURE;
_dest_c->port = htons ( _port );
return SUCCESS;
}
uint32_t t_random ( uint32_t _max )
{
if ( !_seed ) {
srand ( t_time() );
_seed++;
}
if ( _max <= 0 ) {
return ( unsigned ) rand();
} else {
return ( unsigned ) rand() % _max;
}
}
void t_memcpy ( uint8_t *_dest, const uint8_t *_source, size_t _size )
{
/*
* Using countdown to zero method
* It's faster than for(_it = 0; _it < _size; _it++);
*/
size_t _it = _size;
do {
_it--;
_dest[_it] = _source[_it];
} while ( _it );
}
uint8_t *t_memset ( uint8_t *_dest, uint8_t _valu, size_t _size )
{
/*
* Again using countdown to zero method
*/
size_t _it = _size;
do {
_it--;
_dest[_it] = _valu;
} while ( _it );
return _dest;
}
size_t t_memlen ( const uint8_t *_valu)
{
const uint8_t *_it;
size_t _retu = 0;
for ( _it = _valu; *_it; ++_it ) ++_retu;
return _retu;
}
uint8_t *t_strallcpy ( const uint8_t *_source ) /* string alloc and copy */
{
assert(_source);
size_t _length = t_memlen(_source) + 1; /* make space for null character */
uint8_t *_dest = calloc( sizeof ( uint8_t ), _length );
assert(_dest);
t_memcpy(_dest, _source, _length);
return _dest;
}
size_t t_strfind ( const uint8_t *_str, const uint8_t *_substr )
{
size_t _pos = 0;
size_t _it, _delit = 0;
for ( _it = 0; _str[_it] != '\0'; _it++ ) {
if ( _str[_it] == _substr[_delit] ) {
_pos = _it;
while ( _str[_it] == _substr[_delit] && _str[_it] != '\0' ) {
_it ++;
_delit++;
if ( _substr[_delit] == '\0' ) {
return _pos;
}
}
_delit = 0;
_pos = 0;
}
}
return _pos;
}
#ifdef WIN
#if defined(_MSC_VER) || defined(_MSC_EXTENSIONS)
#define DELTA_EPOCH_IN_MICROSECS 11644473600000000Ui64
#else
#define DELTA_EPOCH_IN_MICROSECS 11644473600000000ULL
#endif
struct timezone {
int tz_minuteswest; /* minutes W of Greenwich */
int tz_dsttime; /* type of dst correction */
};
int gettimeofday(struct timeval *tv, struct timezone *tz)
{
FILETIME ft;
unsigned __int64 tmpres = 0;
static int tzflag;
if (NULL != tv) {
GetSystemTimeAsFileTime(&ft);
tmpres |= ft.dwHighDateTime;
tmpres <<= 32;
tmpres |= ft.dwLowDateTime;
/*converting file time to unix epoch*/
tmpres -= DELTA_EPOCH_IN_MICROSECS;
tmpres /= 10; /*convert into microseconds*/
tv->tv_sec = (long)(tmpres / 1000000UL);
tv->tv_usec = (long)(tmpres % 1000000UL);
}
if (NULL != tz) {
if (!tzflag) {
_tzset();
tzflag++;
}
tz->tz_minuteswest = _timezone / 60;
tz->tz_dsttime = _daylight;
}
return 0;
}
#endif /* WIN */
uint64_t t_time()
{
struct timeval _tv;
gettimeofday(&_tv, NULL);
uint64_t _retu_usec = _tv.tv_sec % 1000000; /* get 6 digits an leave space for 3 more */
_retu_usec = _retu_usec * 1000 + (_tv.tv_usec / 1000 );
return _retu_usec;
}
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