106 lines
2.8 KiB
C++
106 lines
2.8 KiB
C++
/* XMRig
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* Copyright 2010 Jeff Garzik <jgarzik@pobox.com>
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* Copyright 2012-2014 pooler <pooler@litecoinpool.org>
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* Copyright 2014 Lucas Jones <https://github.com/lucasjones>
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* Copyright 2014-2016 Wolf9466 <https://github.com/OhGodAPet>
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* Copyright 2016 Jay D Dee <jayddee246@gmail.com>
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* Copyright 2017-2018 XMR-Stak <https://github.com/fireice-uk>, <https://github.com/psychocrypt>
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* Copyright 2018-2019 SChernykh <https://github.com/SChernykh>
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* Copyright 2016-2019 XMRig <https://github.com/xmrig>, <support@xmrig.com>
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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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* (at your option) 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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#include "base/kernel/Env.h"
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#include <regex>
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#include <uv.h>
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#ifndef UV_MAXHOSTNAMESIZE
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# ifdef MAXHOSTNAMELEN
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# define UV_MAXHOSTNAMESIZE (MAXHOSTNAMELEN + 1)
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# else
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# define UV_MAXHOSTNAMESIZE 256
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# endif
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#endif
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xmrig::String xmrig::Env::expand(const char *in)
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{
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if (in == nullptr) {
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return {};
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}
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std::string text(in);
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if (text.size() < 4) {
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return text.c_str();
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}
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static const std::regex env_re{R"--(\$\{([^}]+)\})--"};
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std::map<std::string, String> vars;
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for (std::sregex_iterator i = std::sregex_iterator(text.begin(), text.end(), env_re); i != std::sregex_iterator(); ++i) {
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std::smatch m = *i;
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const auto var = m.str();
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if (vars.count(var)) {
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continue;
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}
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vars.insert({ var, get(m[1].str().c_str()) });
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}
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for (const auto &kv : vars) {
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if (kv.second.isNull()) {
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continue;
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}
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size_t pos = 0;
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while ((pos = text.find(kv.first, pos)) != std::string::npos) {
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text.replace(pos, kv.first.size(), kv.second);
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pos += kv.second.size();
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}
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}
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return text.c_str();
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}
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xmrig::String xmrig::Env::get(const char *name)
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{
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return static_cast<const char *>(getenv(name));
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}
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xmrig::String xmrig::Env::hostname()
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{
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char buf[UV_MAXHOSTNAMESIZE]{};
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size_t size = sizeof(buf);
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# if UV_VERSION_HEX >= 0x010c00
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if (uv_os_gethostname(buf, &size) == 0) {
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return static_cast<const char *>(buf);
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}
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# else
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if (gethostname(buf, size) == 0) {
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return static_cast<const char *>(buf);
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}
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# endif
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return {};
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}
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