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Userland: Move command-line utilities to Userland/Utilities/

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This commit is contained in:
Andreas Kling 2021-01-12 11:57:58 +01:00
parent c4e2fd8123
commit ececac65c2
142 changed files with 58 additions and 58 deletions
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180
Userland/id.cpp
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@ -1,180 +0,0 @@
/*
* 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 <LibCore/ArgsParser.h>
#include <alloca.h>
#include <grp.h>
#include <pwd.h>
#include <stdio.h>
#include <unistd.h>
static int print_id_objects();
static bool flag_print_uid = false;
static bool flag_print_gid = false;
static bool flag_print_name = false;
static bool flag_print_gid_all = false;
int main(int argc, char** argv)
{
if (unveil("/etc/passwd", "r") < 0) {
perror("unveil");
return 1;
}
if (unveil("/etc/group", "r") < 0) {
perror("unveil");
return 1;
}
if (unveil(nullptr, nullptr) < 0) {
perror("unveil");
return 1;
}
if (pledge("stdio rpath", nullptr) < 0) {
perror("pledge");
return 1;
}
Core::ArgsParser args_parser;
args_parser.add_option(flag_print_uid, "Print UID", nullptr, 'u');
args_parser.add_option(flag_print_gid, "Print GID", nullptr, 'g');
args_parser.add_option(flag_print_gid_all, "Print all GIDs", nullptr, 'G');
args_parser.add_option(flag_print_name, "Print name", nullptr, 'n');
args_parser.parse(argc, argv);
if (flag_print_name && !(flag_print_uid || flag_print_gid || flag_print_gid_all)) {
fprintf(stderr, "cannot print only names or real IDs in default format\n");
return 1;
}
if (flag_print_uid + flag_print_gid + flag_print_gid_all > 1) {
fprintf(stderr, "cannot print \"only\" of more than one choice\n");
return 1;
}
int status = print_id_objects();
return status;
}
static bool print_uid_object(uid_t uid)
{
if (flag_print_name) {
struct passwd* pw = getpwuid(uid);
printf("%s", pw ? pw->pw_name : "n/a");
} else
printf("%u", uid);
return true;
}
static bool print_gid_object(gid_t gid)
{
if (flag_print_name) {
struct group* gr = getgrgid(gid);
printf("%s", gr ? gr->gr_name : "n/a");
} else
printf("%u", gid);
return true;
}
static bool print_gid_list()
{
int extra_gid_count = getgroups(0, nullptr);
if (extra_gid_count) {
auto* extra_gids = (gid_t*)alloca(extra_gid_count * sizeof(gid_t));
int rc = getgroups(extra_gid_count, extra_gids);
if (rc < 0) {
perror("\ngetgroups");
return false;
}
for (int g = 0; g < extra_gid_count; ++g) {
auto* gr = getgrgid(extra_gids[g]);
if (flag_print_name && gr)
printf("%s", gr->gr_name);
else
printf("%u", extra_gids[g]);
if (g != extra_gid_count - 1)
printf(" ");
}
}
return true;
}
static bool print_full_id_list()
{
uid_t uid = getuid();
gid_t gid = getgid();
struct passwd* pw = getpwuid(uid);
struct group* gr = getgrgid(gid);
printf("uid=%u(%s) gid=%u(%s)", uid, pw ? pw->pw_name : "n/a", gid, gr ? gr->gr_name : "n/a");
int extra_gid_count = getgroups(0, nullptr);
if (extra_gid_count) {
auto* extra_gids = (gid_t*)alloca(extra_gid_count * sizeof(gid_t));
int rc = getgroups(extra_gid_count, extra_gids);
if (rc < 0) {
perror("\ngetgroups");
return false;
}
printf(" groups=");
for (int g = 0; g < extra_gid_count; ++g) {
auto* gr = getgrgid(extra_gids[g]);
if (gr)
printf("%u(%s)", extra_gids[g], gr->gr_name);
else
printf("%u", extra_gids[g]);
if (g != extra_gid_count - 1)
printf(",");
}
}
return true;
}
static int print_id_objects()
{
if (flag_print_uid) {
if (!print_uid_object(getuid()))
return 1;
} else if (flag_print_gid) {
if (!print_gid_object(getgid()))
return 1;
} else if (flag_print_gid_all) {
if (!print_gid_list())
return 1;
} else {
if (!print_full_id_list())
return 1;
}
printf("\n");
return 0;
}