/* 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.
+ * Licensed under GPLv2, see file LICENSE in this source tree.
*
*/
-#include "busybox.h"
+//usage:#define deluser_trivial_usage
+//usage: IF_LONG_OPTS("[--remove-home] ") "USER"
+//usage:#define deluser_full_usage "\n\n"
+//usage: "Delete USER from the system"
+// --remove-home is self-explanatory enough to put it in --help
-static void del_line_matching(const char *login, const char *filename)
+//usage:#define delgroup_trivial_usage
+//usage: IF_FEATURE_DEL_USER_FROM_GROUP("[USER] ")"GROUP"
+//usage:#define delgroup_full_usage "\n\n"
+//usage: "Delete group GROUP from the system"
+//usage: IF_FEATURE_DEL_USER_FROM_GROUP(" or user USER from group GROUP")
+
+#include "libbb.h"
+
+int deluser_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int deluser_main(int argc, char **argv)
{
- char *line;
- FILE *passwd;
- int len = strlen(login);
- int found = 0;
- llist_t *plist = NULL;
-
- passwd = fopen_or_warn(filename, "r");
- if (!passwd) return;
+ /* User or group name */
+ char *name;
+ /* Username (non-NULL only in "delgroup USER GROUP" case) */
+ char *member;
+ /* Name of passwd or group file */
+ const char *pfile;
+ /* Name of shadow or gshadow file */
+ const char *sfile;
+ /* Are we deluser or delgroup? */
+ int do_deluser = (ENABLE_DELUSER && (!ENABLE_DELGROUP || applet_name[3] == 'u'));
- while ((line = xmalloc_fgets(passwd))) {
- if (!strncmp(line, login, len)
- && line[len] == ':'
- ) {
- found++;
- free(line);
- } else {
- llist_add_to_end(&plist, line);
- }
+#if !ENABLE_LONG_OPTS
+ const int opt_delhome = 0;
+#else
+ int opt_delhome = 0;
+ if (do_deluser) {
+ applet_long_options =
+ "remove-home\0" No_argument "\xff";
+ opt_delhome = getopt32(argv, "");
+ argv += opt_delhome;
+ argc -= opt_delhome;
}
+#endif
- if (!ENABLE_FEATURE_CLEAN_UP) {
- if (!found) {
- bb_error_msg("can't find '%s' in '%s'", login, filename);
- return;
- }
- passwd = fopen_or_warn(filename, "w");
- if (passwd)
- while ((line = llist_pop(&plist)))
- fputs(line, passwd);
- } else {
- if (!found) {
- bb_error_msg("can't find '%s' in '%s'", login, filename);
- goto clean_up;
- }
- fclose(passwd);
- passwd = fopen_or_warn(filename, "w");
- if (passwd) {
- clean_up:
- while ((line = llist_pop(&plist))) {
- if (found) fputs(line, passwd);
- free(line);
+ if (geteuid() != 0)
+ bb_error_msg_and_die(bb_msg_perm_denied_are_you_root);
+
+ name = argv[1];
+ member = NULL;
+
+ switch (argc) {
+ case 3:
+ if (!ENABLE_FEATURE_DEL_USER_FROM_GROUP || do_deluser)
+ break;
+ /* It's "delgroup USER GROUP" */
+ member = name;
+ name = argv[2];
+ /* Fallthrough */
+
+ case 2:
+ if (do_deluser) {
+ /* "deluser USER" */
+ struct passwd *pw;
+
+ pw = xgetpwnam(name); /* bail out if USER is wrong */
+ pfile = bb_path_passwd_file;
+ if (ENABLE_FEATURE_SHADOWPASSWDS)
+ sfile = bb_path_shadow_file;
+ if (opt_delhome)
+ remove_file(pw->pw_dir, FILEUTILS_RECUR);
+ } else {
+ struct group *gr;
+ do_delgroup:
+ /* "delgroup GROUP" or "delgroup USER GROUP" */
+ if (do_deluser < 0) { /* delgroup after deluser? */
+ gr = getgrnam(name);
+ if (!gr)
+ return EXIT_SUCCESS;
+ } else {
+ gr = xgetgrnam(name); /* bail out if GROUP is wrong */
}
- fclose(passwd);
+ if (!member) {
+ /* "delgroup GROUP" */
+ struct passwd *pw;
+ /* Check if the group is in use */
+ while ((pw = getpwent()) != NULL) {
+ if (pw->pw_gid == gr->gr_gid)
+ bb_error_msg_and_die("'%s' still has '%s' as their primary group!",
+ pw->pw_name, name);
+ }
+ //endpwent();
+ }
+ pfile = bb_path_group_file;
+ if (ENABLE_FEATURE_SHADOWPASSWDS)
+ sfile = bb_path_gshadow_file;
}
- }
-}
-int deluser_main(int argc, char **argv)
-{
- if (argc != 2)
- bb_show_usage();
+ /* Modify pfile, then sfile */
+ do {
+ if (update_passwd(pfile, name, NULL, member) == -1)
+ return EXIT_FAILURE;
+ if (ENABLE_FEATURE_SHADOWPASSWDS) {
+ pfile = sfile;
+ sfile = NULL;
+ }
+ } while (ENABLE_FEATURE_SHADOWPASSWDS && pfile);
- if (ENABLE_DELUSER
- && (!ENABLE_DELGROUP || applet_name[3] == 'u')
- ) {
- del_line_matching(argv[1], bb_path_passwd_file);
- if (ENABLE_FEATURE_SHADOWPASSWDS)
- del_line_matching(argv[1], bb_path_shadow_file);
- }
- del_line_matching(argv[1], bb_path_group_file);
- if (ENABLE_FEATURE_SHADOWPASSWDS)
- del_line_matching(argv[1], bb_path_gshadow_file);
+ if (do_deluser > 0) {
+ /* Delete user from all groups */
+ if (update_passwd(bb_path_group_file, NULL, NULL, name) == -1)
+ return EXIT_FAILURE;
- return EXIT_SUCCESS;
+ if (ENABLE_DELGROUP) {
+ /* "deluser USER" also should try to delete
+ * same-named group. IOW: do "delgroup USER"
+ */
+// On debian deluser is a perl script that calls userdel.
+// From man userdel:
+// If USERGROUPS_ENAB is defined to yes in /etc/login.defs, userdel will
+// delete the group with the same name as the user.
+ do_deluser = -1;
+ goto do_delgroup;
+ }
+ }
+ return EXIT_SUCCESS;
+ }
+ /* Reached only if number of command line args is wrong */
+ bb_show_usage();
}
-
-/* $Id: deluser.c,v 1.4 2003/07/14 20:20:45 andersen Exp $ */
projects / oweals / busybox.git / blobdiff