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106 lines
2.9 KiB
C++
106 lines
2.9 KiB
C++
/*
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The MIT License (MIT)
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Copyright (c) 2013-2014 winlin
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Permission is hereby granted, free of charge, to any person obtaining a copy of
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this software and associated documentation files (the "Software"), to deal in
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the Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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the Software, and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <srs_core.hpp>
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#include <string.h>
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#include <sys/time.h>
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#include <netdb.h>
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#include <arpa/inet.h>
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static int64_t _srs_system_time_us_cache = 0;
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int64_t srs_get_system_time_ms()
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{
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return _srs_system_time_us_cache / 1000;
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}
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void srs_update_system_time_ms()
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{
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timeval now;
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gettimeofday(&now, NULL);
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// we must convert the tv_sec/tv_usec to int64_t.
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_srs_system_time_us_cache = ((int64_t)now.tv_sec) * 1000 * 1000 + (int64_t)now.tv_usec;
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_srs_system_time_us_cache = srs_max(0, _srs_system_time_us_cache);
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}
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std::string srs_replace(std::string str, std::string old_str, std::string new_str)
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{
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std::string ret = str;
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if (old_str == new_str) {
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return ret;
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}
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size_t pos = 0;
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while ((pos = ret.find(old_str, pos)) != std::string::npos) {
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ret = ret.replace(pos, old_str.length(), new_str);
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pos += new_str.length();
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}
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return ret;
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}
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std::string srs_dns_resolve(std::string host)
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{
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if (inet_addr(host.c_str()) != INADDR_NONE) {
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return host;
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}
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hostent* answer = gethostbyname(host.c_str());
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if (answer == NULL) {
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return "";
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}
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char ipv4[16];
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memset(ipv4, 0, sizeof(ipv4));
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for (int i = 0; i < answer->h_length; i++) {
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inet_ntop(AF_INET, answer->h_addr_list[i], ipv4, sizeof(ipv4));
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break;
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}
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return ipv4;
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}
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bool srs_is_little_endian()
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{
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// convert to network(big-endian) order, if not equals,
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// the system is little-endian, so need to convert the int64
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static int little_endian_check = -1;
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if(little_endian_check == -1) {
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union {
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int32_t i;
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int8_t c;
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} little_check_union;
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little_check_union.i = 0x01;
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little_endian_check = little_check_union.c;
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}
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return (little_endian_check == 1);
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}
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