mirror of
https://github.com/badaix/snapcast.git
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95 lines
2.3 KiB
C++
95 lines
2.3 KiB
C++
/***
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This file is part of snapcast
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Copyright (C) 2014-2019 Johannes Pohl
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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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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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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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#ifndef FILE_UTILS_H
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#define FILE_UTILS_H
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#include "string_utils.hpp"
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#include <fstream>
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#include <grp.h>
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#include <pwd.h>
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#include <stdexcept>
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#include <vector>
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namespace utils
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{
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namespace file
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{
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static bool exists(const std::string& filename)
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{
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std::ifstream infile(filename.c_str());
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return infile.good();
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}
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static void do_chown(const std::string& file_path, const std::string& user_name, const std::string& group_name)
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{
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if (user_name.empty() && group_name.empty())
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return;
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if (!exists(file_path))
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return;
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uid_t uid = -1;
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gid_t gid = -1;
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if (!user_name.empty())
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{
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struct passwd* pwd = getpwnam(user_name.c_str());
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if (pwd == nullptr)
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throw std::runtime_error("Failed to get uid");
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uid = pwd->pw_uid;
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}
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if (!group_name.empty())
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{
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struct group* grp = getgrnam(group_name.c_str());
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if (grp == nullptr)
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throw std::runtime_error("Failed to get gid");
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gid = grp->gr_gid;
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}
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if (chown(file_path.c_str(), uid, gid) == -1)
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throw std::runtime_error("chown failed");
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}
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static int mkdirRecursive(const char* path, mode_t mode)
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{
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std::vector<std::string> pathes = utils::string::split(path, '/');
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std::stringstream ss;
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int res = 0;
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for (const auto& p : pathes)
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{
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if (p.empty())
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continue;
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ss << "/" << p;
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int res = mkdir(ss.str().c_str(), mode);
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if ((res != 0) && (errno != EEXIST))
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return res;
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}
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return res;
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}
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} // namespace file
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} // namespace utils
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#endif
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