7f2bd7f4f0
This fixes a problem on old Ubuntu distro causing the Node ID to be the same for multiple hosts. Additional minor changes: - removed compilation warnings - some fixes to code indentation
93 lines
2.9 KiB
C++
Executable File
93 lines
2.9 KiB
C++
Executable File
//
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// utils.cpp
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//
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// Copyright (c) 2019 2020 Andrea Bondavalli. All rights reserved.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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//
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#include <boost/format.hpp>
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#include "utils.hpp"
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uint16_t crc16(const uint8_t* p, size_t len) {
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uint8_t x;
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uint16_t crc = 0xFFFF;
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while (len--) {
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x = crc >> 8 ^ *p++;
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x ^= x >> 4;
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crc = (crc << 8) ^ (static_cast<uint16_t>(x << 12)) ^
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(static_cast<uint16_t>(x << 5)) ^ (static_cast<uint16_t>(x));
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}
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return crc;
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}
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std::tuple<bool /* res */,
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std::string /* protocol */,
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std::string /* host */,
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std::string /* port */,
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std::string /* path */>
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parse_url(const std::string& _url) {
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std::string url = httplib::detail::decode_url(_url);
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size_t protocol_sep_pos = url.find_first_of("://");
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if (protocol_sep_pos == std::string::npos) {
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/* no protocol, invalid URL */
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return {false, "", "", "", ""};
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}
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std::string port, host, path("/");
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std::string protocol = url.substr(0, protocol_sep_pos);
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std::string url_new = url.substr(protocol_sep_pos + 3);
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size_t path_sep_pos = url_new.find_first_of("/");
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size_t port_sep_pos = url_new.find_first_of(":");
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if (port_sep_pos != std::string::npos) {
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/* port specified */
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if (path_sep_pos != std::string::npos) {
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/* path specified */
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port = url_new.substr(port_sep_pos + 1, path_sep_pos - port_sep_pos - 1);
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path = url_new.substr(path_sep_pos);
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} else {
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/* path not specified */
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port = url_new.substr(port_sep_pos + 1);
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}
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host = url_new.substr(0, port_sep_pos);
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} else if (path_sep_pos != std::string::npos) {
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/* port not specified, path specified */
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host = url_new.substr(0, path_sep_pos);
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path = url_new.substr(path_sep_pos);
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} else {
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/* port and path not specified */
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host = url_new;
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}
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return {host.length() > 0, protocol, host, port, path};
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}
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std::string get_node_id(uint32_t ip_addr) {
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std::stringstream ss;
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if (gethostid() == 0x7f0101) {
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/* hostid is using lo interface ip
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we create an host ID based on the current IP */
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ss << "AES67 daemon "
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<< boost::format("%02x%02x%02x%02x")
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% ((ip_addr >> 8) & 0xff)
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% ((ip_addr >> 24) & 0xff)
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% (ip_addr & 0xff)
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% ((ip_addr >> 16) & 0xff);
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} else {
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ss << "AES67 daemon " << std::hex << (uint32_t)gethostid();
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}
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return ss.str();
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}
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