mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-29 19:10:26 +00:00
87 lines
2.7 KiB
C++
87 lines
2.7 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <AK/Vector.h>
|
|
#include <alloca.h>
|
|
#include <grp.h>
|
|
#include <pwd.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
extern "C" int main(int, char**);
|
|
|
|
int main(int argc, char** argv)
|
|
{
|
|
uid_t uid = 0;
|
|
gid_t gid = 0;
|
|
struct passwd* pwd = nullptr;
|
|
if (argc > 1) {
|
|
pwd = getpwnam(argv[1]);
|
|
if (!pwd) {
|
|
fprintf(stderr, "No such user: %s\n", argv[1]);
|
|
return 1;
|
|
}
|
|
uid = pwd->pw_uid;
|
|
gid = pwd->pw_gid;
|
|
}
|
|
|
|
if (!pwd)
|
|
pwd = getpwuid(0);
|
|
|
|
if (!pwd) {
|
|
fprintf(stderr, "No passwd entry.\n");
|
|
return 1;
|
|
}
|
|
|
|
Vector<gid_t> extra_gids;
|
|
for (auto* group = getgrent(); group; group = getgrent()) {
|
|
for (size_t i = 0; group->gr_mem[i]; ++i) {
|
|
if (!strcmp(pwd->pw_name, group->gr_mem[i]))
|
|
extra_gids.append(group->gr_gid);
|
|
}
|
|
}
|
|
endgrent();
|
|
|
|
int rc = setgroups(extra_gids.size(), extra_gids.data());
|
|
if (rc < 0) {
|
|
perror("setgroups");
|
|
return 1;
|
|
}
|
|
rc = setgid(gid);
|
|
if (rc < 0) {
|
|
perror("setgid");
|
|
return 1;
|
|
}
|
|
rc = setuid(uid);
|
|
if (rc < 0) {
|
|
perror("setuid");
|
|
return 1;
|
|
}
|
|
rc = execl("/bin/sh", "sh", nullptr);
|
|
perror("execl");
|
|
return 1;
|
|
}
|