mirror of
https://github.com/ton-blockchain/ton
synced 2025-02-13 03:32:22 +00:00
59 lines
1.9 KiB
C++
59 lines
1.9 KiB
C++
/*
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This file is part of TON Blockchain Library.
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TON Blockchain Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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TON Blockchain Library 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 Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with TON Blockchain Library. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2017-2020 Telegram Systems LLP
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*/
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#include "user.h"
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#if TD_LINUX
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#include <unistd.h>
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#include <sys/types.h>
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#include <pwd.h>
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#include <grp.h>
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#endif
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namespace td {
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#if TD_LINUX
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td::Status change_user(td::Slice user) {
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struct passwd *pw;
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if (getuid() != 0 || geteuid() != 0) {
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return td::Status::PosixError(errno, "cannot setuid() as not root");
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}
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if ((pw = getpwnam(user.str().c_str())) == 0) {
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return td::Status::PosixError(errno, PSTRING() << "bad user '" << user << "'");
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}
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gid_t gid = pw->pw_gid;
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if (setgroups(1, &gid) < 0) {
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return td::Status::PosixError(errno, "failed to clear supplementary groups list");
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}
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if (initgroups(user.str().c_str(), gid) != 0) {
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return td::Status::PosixError(errno, "failed to load groups of user");
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}
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if (setgid(pw->pw_gid) < 0) {
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return td::Status::PosixError(errno, "failed to setgid()");
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}
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if (setuid(pw->pw_uid) < 0) {
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return td::Status::PosixError(errno, "failed to setuid()");
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}
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return td::Status::OK();
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}
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#else
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td::Status change_user(td::Slice username) {
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return td::Status::Error("not implemented");
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}
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#endif
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} // namespace td
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