/* vi: set sw=4 ts=4: */
/*
- * deluser (remove lusers from the system ;) for TinyLogin
+ * deluser/delgroup implementation for busybox
*
* Copyright (C) 1999 by Lineo, inc. and John Beppu
* Copyright (C) 1999,2000,2001 by John Beppu <beppu@codepoet.org>
- * Unified with delgroup by Tito Ragusa <farmatito@tiscali.it>
+ * Copyright (C) 2007 by Tito Ragusa <farmatito@tiscali.it>
*
* Licensed under GPL version 2, see file LICENSE in this tarball for details.
*
*/
+#include "libbb.h"
-#include "busybox.h"
-
-static void del_line_matching(const char *login, const char *filename)
+static int del_line_matching(char **args, const char *filename)
{
- char *line;
- FILE *passwd;
- int len = strlen(login);
- int found = 0;
- llist_t *plist = NULL;
-
- passwd = fopen_or_warn(filename, "r");
- if (!passwd) return;
-
- while ((line = xmalloc_fgets(passwd))) {
- if (!strncmp(line, login, len)
- && line[len] == ':'
- ) {
- found++;
- free(line);
- } else {
- llist_add_to_end(&plist, line);
- }
- }
-
- if (!found) {
- bb_error_msg("can't find '%s' in '%s'", login, filename);
- if (!ENABLE_FEATURE_CLEAN_UP) return;
- goto clean_up;
- }
-
- if (ENABLE_FEATURE_CLEAN_UP)
- fclose(passwd);
-
- passwd = fopen_or_warn(filename, "w");
- if (passwd) {
- if (ENABLE_FEATURE_CLEAN_UP) {
- clean_up:
- while ((line = llist_pop(&plist))) {
- if (found) fputs(line, passwd);
- free(line);
- }
- fclose(passwd);
- } else {
- /* found != 0 here, no need to check */
- while ((line = llist_pop(&plist)))
- fputs(line, passwd);
- }
+ if (ENABLE_FEATURE_DEL_USER_FROM_GROUP && args[2]) {
+ return update_passwd(filename, args[2], NULL, args[1]);
}
+ return update_passwd(filename, args[1], NULL, NULL);
}
+int deluser_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int deluser_main(int argc, char **argv)
{
- if (argc != 2)
+ if (argc != 2
+ && (!ENABLE_FEATURE_DEL_USER_FROM_GROUP
+ || (applet_name[3] != 'g' || argc != 3))
+ ) {
bb_show_usage();
+ }
- if (ENABLE_DELUSER
- && (!ENABLE_DELGROUP || applet_name[3] == 'u')
+ if (geteuid())
+ bb_error_msg_and_die(bb_msg_perm_denied_are_you_root);
+
+ if ((ENABLE_FEATURE_DEL_USER_FROM_GROUP && argc != 3)
+ || ENABLE_DELUSER
+ || (ENABLE_DELGROUP && ENABLE_DESKTOP)
) {
- del_line_matching(argv[1], bb_path_passwd_file);
- if (ENABLE_FEATURE_SHADOWPASSWDS)
- del_line_matching(argv[1], bb_path_shadow_file);
+ if (ENABLE_DELUSER
+ && (!ENABLE_DELGROUP || applet_name[3] == 'u')
+ ) {
+ if (del_line_matching(argv, bb_path_passwd_file) < 0)
+ return EXIT_FAILURE;
+ if (ENABLE_FEATURE_SHADOWPASSWDS) {
+ del_line_matching(argv, bb_path_shadow_file);
+ }
+ } else if (ENABLE_DESKTOP && ENABLE_DELGROUP && getpwnam(argv[1]))
+ bb_error_msg_and_die("can't remove primary group of user %s", argv[1]);
+ }
+ if (del_line_matching(argv, bb_path_group_file) < 0)
+ return EXIT_FAILURE;
+ if (ENABLE_FEATURE_SHADOWPASSWDS) {
+ del_line_matching(argv, bb_path_gshadow_file);
}
- del_line_matching(argv[1], bb_path_group_file);
- if (ENABLE_FEATURE_SHADOWPASSWDS)
- del_line_matching(argv[1], bb_path_gshadow_file);
-
return EXIT_SUCCESS;
}
-
-/* $Id: deluser.c,v 1.4 2003/07/14 20:20:45 andersen Exp $ */