152 lines
3.9 KiB
C++
152 lines
3.9 KiB
C++
/* XMRig
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* Copyright (c) 2018-2021 SChernykh <https://github.com/SChernykh>
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* Copyright (c) 2016-2021 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/io/Env.h"
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#include "base/kernel/Process.h"
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#include "version.h"
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#include <regex>
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#include <uv.h>
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#include <map>
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#ifndef _WIN32
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# include <unistd.h>
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#endif
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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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namespace xmrig {
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#ifdef XMRIG_FEATURE_ENV
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static std::map<String, String> variables;
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static void createVariables()
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{
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variables.insert({ "XMRIG_VERSION", APP_VERSION });
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variables.insert({ "XMRIG_KIND", APP_KIND });
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variables.insert({ "XMRIG_HOSTNAME", Env::hostname() });
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variables.insert({ "XMRIG_EXE", Process::exepath() });
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variables.insert({ "XMRIG_EXE_DIR", Process::location(Process::ExeLocation) });
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variables.insert({ "XMRIG_CWD", Process::location(Process::CwdLocation) });
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variables.insert({ "XMRIG_HOME_DIR", Process::location(Process::HomeLocation) });
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variables.insert({ "XMRIG_TEMP_DIR", Process::location(Process::TempLocation) });
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variables.insert({ "XMRIG_DATA_DIR", Process::location(Process::DataLocation) });
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String hostname = "HOSTNAME";
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if (!getenv(hostname)) { // NOLINT(concurrency-mt-unsafe)
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variables.insert({ std::move(hostname), Env::hostname() });
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}
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}
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#endif
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} // namespace xmrig
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xmrig::String xmrig::Env::expand(const char *in, const std::map<String, String> &extra)
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{
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# ifdef XMRIG_FEATURE_ENV
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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(), extra) });
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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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# else
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return in;
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# endif
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}
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xmrig::String xmrig::Env::get(const String &name, const std::map<String, String> &extra)
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{
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# ifdef XMRIG_FEATURE_ENV
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if (variables.empty()) {
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createVariables();
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}
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const auto it = variables.find(name);
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if (it != variables.end()) {
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return it->second;
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}
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if (!extra.empty()) {
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const auto it = extra.find(name);
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if (it != extra.end()) {
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return it->second;
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}
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}
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# endif
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return static_cast<const char *>(getenv(name)); // NOLINT(concurrency-mt-unsafe)
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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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if (gethostname(buf, sizeof(buf)) == 0) {
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return static_cast<const char *>(buf);
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}
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return {};
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}
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