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/* chown - change the file ownership
* Copyright (C) 2022 Ferass EL HAFIDI
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <errno.h>
#include <unistd.h>
#include <stdio.h>
#include <pwd.h>
#include <stdlib.h>
#include "version.h"
#ifndef COMPILETIME
#define COMPILETIME
#endif
int getopt(int argc, char *const argv[], const char *optstring);
void printUsage();
int main(int argc, char *const argv[]) {
int argument;
struct passwd *user;
if (argc == 1) {
printUsage();
return 1;
}
while ((argument = getopt(argc, argv, "")) != -1) {
if (argument == '?') {
printUsage();
return 1;
}
}
if ((user = getpwnam(argv[1])) == NULL && (user = getpwuid(strtol(argv[1], NULL, 10))) == NULL)
return errno; /* User doesn't exist */
/* User found! */
else if ((user = getpwnam(argv[1])) != NULL)
chown(argv[2], user->pw_uid, user->pw_gid);
else if ((user = getpwuid(strtol(argv[1], NULL, 10))) != NULL)
chown(argv[2], user->pw_uid, user->pw_gid);
if (errno) return errno;
return 0;
}
void printUsage() {
printf("Ferass' Base System. (%s)\n\n"
"Usage: chown owner file\n\n"
"Change file ownership.\n\n", COMPILETIME);
}
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