mirror of
https://github.com/sheumann/hush.git
synced 2024-11-05 06:07:00 +00:00
829bbd3b57
by Tito (farmatito AT tiscali.it) function old new delta update_passwd 743 1171 +428 bb_perror_nomsg - 9 +9 find_main 436 444 +8 passwd_main 1023 1027 +4 nameval 202 206 +4 chpasswd_main 315 319 +4 bb__parsespent 119 117 -2 adduser_main 654 650 -4 addgroup_main 345 341 -4 sv_main 1228 1222 -6 deluser_main 173 160 -13 bb_internal_putpwent 69 - -69 add_user_to_group 231 - -231 del_line_matching 460 31 -429 ------------------------------------------------------------------------------ (add/remove: 1/2 grow/shrink: 5/6 up/down: 457/-758) Total: -301 bytes
134 lines
3.3 KiB
C
134 lines
3.3 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* addgroup - add groups to /etc/group and /etc/gshadow
|
|
*
|
|
* Copyright (C) 1999 by Lineo, inc. and John Beppu
|
|
* Copyright (C) 1999,2000,2001 by John Beppu <beppu@codepoet.org>
|
|
* Copyright (C) 2007 by Tito Ragusa <farmatito@tiscali.it>
|
|
*
|
|
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
|
|
*
|
|
*/
|
|
#include "libbb.h"
|
|
|
|
static void xgroup_study(struct group *g)
|
|
{
|
|
/* Make sure gr_name is unused */
|
|
if (getgrnam(g->gr_name)) {
|
|
goto error;
|
|
}
|
|
|
|
/* Check if the desired gid is free
|
|
* or find the first free one */
|
|
while (1) {
|
|
if (!getgrgid(g->gr_gid)) {
|
|
return; /* found free group: return */
|
|
}
|
|
if (option_mask32) {
|
|
/* -g N, cannot pick gid other than N: error */
|
|
g->gr_name = itoa(g->gr_gid);
|
|
goto error;
|
|
}
|
|
g->gr_gid++;
|
|
if (g->gr_gid <= 0) {
|
|
/* overflowed: error */
|
|
bb_error_msg_and_die("no gids left");
|
|
}
|
|
}
|
|
|
|
error:
|
|
/* exit */
|
|
bb_error_msg_and_die("group %s already exists", g->gr_name);
|
|
}
|
|
|
|
/* append a new user to the passwd file */
|
|
static void new_group(char *group, gid_t gid)
|
|
{
|
|
struct group gr;
|
|
char *p;
|
|
|
|
/* make sure gid and group haven't already been allocated */
|
|
gr.gr_gid = gid;
|
|
gr.gr_name = group;
|
|
xgroup_study(&gr);
|
|
|
|
/* add entry to group */
|
|
p = xasprintf("x:%u:", gr.gr_gid);
|
|
if (update_passwd(bb_path_group_file, group, p, NULL) < 0)
|
|
exit(EXIT_FAILURE);
|
|
if (ENABLE_FEATURE_CLEAN_UP)
|
|
free(p);
|
|
#if ENABLE_FEATURE_SHADOWPASSWDS
|
|
/* Ignore errors: if file is missing we suppose admin doesn't want it */
|
|
update_passwd(bb_path_gshadow_file, group, "!::", NULL);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* addgroup will take a login_name as its first parameter.
|
|
*
|
|
* gid can be customized via command-line parameters.
|
|
* If called with two non-option arguments, addgroup
|
|
* will add an existing user to an existing group.
|
|
*/
|
|
int addgroup_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int addgroup_main(int argc UNUSED_PARAM, char **argv)
|
|
{
|
|
char *group;
|
|
gid_t gid = 0;
|
|
|
|
/* need to be root */
|
|
if (geteuid()) {
|
|
bb_error_msg_and_die(bb_msg_perm_denied_are_you_root);
|
|
}
|
|
|
|
/* Syntax:
|
|
* addgroup group
|
|
* addgroup -g num group
|
|
* addgroup user group
|
|
* Check for min, max and missing args */
|
|
opt_complementary = "-1:?2";
|
|
if (getopt32(argv, "g:", &group)) {
|
|
gid = xatoul_range(group, 0, ((unsigned long)(gid_t)ULONG_MAX) >> 1);
|
|
}
|
|
/* move past the commandline options */
|
|
argv += optind;
|
|
//argc -= optind;
|
|
|
|
#if ENABLE_FEATURE_ADDUSER_TO_GROUP
|
|
if (argv[1]) {
|
|
struct group *gr;
|
|
|
|
if (option_mask32) {
|
|
/* -g was there, but "addgroup -g num user group"
|
|
* is a no-no */
|
|
bb_show_usage();
|
|
}
|
|
|
|
/* check if group and user exist */
|
|
xuname2uid(argv[0]); /* unknown user: exit */
|
|
gr = xgetgrnam(argv[1]); /* unknown group: exit */
|
|
/* check if user is already in this group */
|
|
for (; *(gr->gr_mem) != NULL; (gr->gr_mem)++) {
|
|
if (!strcmp(argv[0], *(gr->gr_mem))) {
|
|
/* user is already in group: do nothing */
|
|
return EXIT_SUCCESS;
|
|
}
|
|
}
|
|
if (update_passwd(bb_path_group_file, argv[1], NULL, argv[0]) < 0) {
|
|
return EXIT_FAILURE;
|
|
}
|
|
# if ENABLE_FEATURE_SHADOWPASSWDS
|
|
update_passwd(bb_path_gshadow_file, argv[1], NULL, argv[0]);
|
|
# endif
|
|
} else
|
|
#endif /* ENABLE_FEATURE_ADDUSER_TO_GROUP */
|
|
{
|
|
die_if_bad_username(argv[0]);
|
|
new_group(argv[0], gid);
|
|
|
|
}
|
|
/* Reached only on success */
|
|
return EXIT_SUCCESS;
|
|
}
|