int
main(int argc, char **argv)
{
struct passwd *pwd;
int arg;
int errors = 0;
/*
* Get my name so that I can use it to report errors.
*/
Prog = Basename(argv[0]);
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
openlog(Prog, LOG_PID|LOG_CONS|LOG_NOWAIT, LOG_AUTH);
#ifdef SHADOWPWD
is_shadow_pwd = spw_file_present();
#endif
#ifdef SHADOWGRP
is_shadow_grp = sgr_file_present();
#endif
/*
* The open routines for the DBM files don't use read-write
* as the mode, so we have to clue them in.
*/
#ifdef NDBM
pw_dbm_mode = O_RDWR;
#ifdef SHADOWPWD
sp_dbm_mode = O_RDWR;
#endif
gr_dbm_mode = O_RDWR;
#ifdef SHADOWGRP
sg_dbm_mode = O_RDWR;
#endif
#endif
while ((arg = getopt (argc, argv, "fr")) != EOF) {
switch (arg) {
case 'f': /* force remove even if not owned by user */
fflg++;
break;
case 'r': /* remove home dir and mailbox */
rflg++;
break;
default:
usage();
}
}
if (optind + 1 != argc)
usage ();
/*
* Start with a quick check to see if the user exists.
*/
user_name = argv[argc - 1];
if (! (pwd = getpwnam (user_name))) {
fprintf(stderr, _("%s: user %s does not exist\n"),
Prog, user_name);
exit(E_NOTFOUND);
}
#ifdef USE_NIS
/*
* Now make sure it isn't an NIS user.
*/
if (__ispwNIS ()) {
char *nis_domain;
char *nis_master;
fprintf(stderr, _("%s: user %s is a NIS user\n"),
Prog, user_name);
if (! yp_get_default_domain (&nis_domain) &&
! yp_master (nis_domain, "passwd.byname",
&nis_master)) {
fprintf(stderr, _("%s: %s is the NIS master\n"),
Prog, nis_master);
}
exit(E_NOTFOUND);
}
#endif
user_id = pwd->pw_uid;
user_home = xstrdup(pwd->pw_dir);
/*
* Check to make certain the user isn't logged in.
*/
user_busy (user_name, user_id);
/*
* Do the hard stuff - open the files, create the user entries,
* create the home directory, then close and update the files.
*/
open_files ();
update_user ();
update_groups ();
#ifndef NO_REMOVE_MAILBOX
if (rflg)
remove_mailbox();
#endif
if (rflg && !fflg && !is_owner(user_id, user_home)) {
fprintf(stderr, _("%s: %s not owned by %s, not removing\n"),
Prog, user_home, user_name);
rflg = 0;
errors++;
}
/* This may be slow, the above should be good enough. */
#ifdef EXTRA_CHECK_HOME_DIR
if (rflg && !fflg) {
/*
* For safety, refuse to remove the home directory
* if it would result in removing some other user's
* home directory. Still not perfect so be careful,
* but should prevent accidents if someone has /home
* or / as home directory... --marekm
*/
setpwent();
while ((pwd = getpwent())) {
if (strcmp(pwd->pw_name, user_name) == 0)
continue;
if (path_prefix(user_home, pwd->pw_dir)) {
fprintf(stderr,
_("%s: not removing directory %s (would remove home of user %s)\n"),
Prog, user_home, pwd->pw_name);
rflg = 0;
errors++;
break;
}
}
}
#endif
if (rflg) {
if (remove_tree(user_home) || rmdir(user_home)) {
fprintf(stderr, _("%s: error removing directory %s\n"),
Prog, user_home);
errors++;
}
}
/*
* Cancel any crontabs or at jobs. Have to do this before we
* remove the entry from /etc/passwd.
*/
user_cancel(user_name);
close_files ();
exit(errors ? E_HOMEDIR : E_SUCCESS);
/*NOTREACHED*/
}
/*
* main - userdel command
*/
int main (int argc, char **argv)
{
int errors = 0; /* Error in the removal of the home directory */
#ifdef ACCT_TOOLS_SETUID
#ifdef USE_PAM
pam_handle_t *pamh = NULL;
int retval;
#endif /* USE_PAM */
#endif /* ACCT_TOOLS_SETUID */
/*
* Get my name so that I can use it to report errors.
*/
Prog = Basename (argv[0]);
(void) setlocale (LC_ALL, "");
(void) bindtextdomain (PACKAGE, LOCALEDIR);
(void) textdomain (PACKAGE);
process_root_flag ("-R", argc, argv);
OPENLOG ("userdel");
#ifdef WITH_AUDIT
audit_help_open ();
#endif /* WITH_AUDIT */
{
/*
* Parse the command line options.
*/
int c;
static struct option long_options[] = {
{"force", no_argument, NULL, 'f'},
{"help", no_argument, NULL, 'h'},
{"remove", no_argument, NULL, 'r'},
{"root", required_argument, NULL, 'R'},
#ifdef WITH_SELINUX
{"selinux-user", no_argument, NULL, 'Z'},
#endif /* WITH_SELINUX */
{NULL, 0, NULL, '\0'}
};
while ((c = getopt_long (argc, argv,
#ifdef WITH_SELINUX
"fhrR:Z",
#else /* !WITH_SELINUX */
"fhrR:",
#endif /* !WITH_SELINUX */
long_options, NULL)) != -1) {
switch (c) {
case 'f': /* force remove even if not owned by user */
fflg = true;
break;
case 'h':
usage (E_SUCCESS);
break;
case 'r': /* remove home dir and mailbox */
rflg = true;
break;
case 'R': /* no-op, handled in process_root_flag () */
break;
#ifdef WITH_SELINUX
case 'Z':
if (is_selinux_enabled () > 0) {
Zflg = true;
} else {
fprintf (stderr,
_("%s: -Z requires SELinux enabled kernel\n"),
Prog);
exit (E_BAD_ARG);
}
break;
#endif /* WITH_SELINUX */
default:
usage (E_USAGE);
}
}
}
if ((optind + 1) != argc) {
usage (E_USAGE);
}
#ifdef ACCT_TOOLS_SETUID
#ifdef USE_PAM
{
struct passwd *pampw;
pampw = getpwuid (getuid ()); /* local, no need for xgetpwuid */
if (pampw == NULL) {
fprintf (stderr,
_("%s: Cannot determine your user name.\n"),
Prog);
exit (E_PW_UPDATE);
}
retval = pam_start ("userdel", pampw->pw_name, &conv, &pamh);
}
if (PAM_SUCCESS == retval) {
retval = pam_authenticate (pamh, 0);
}
if (PAM_SUCCESS == retval) {
retval = pam_acct_mgmt (pamh, 0);
}
if (PAM_SUCCESS != retval) {
fprintf (stderr, _("%s: PAM: %s\n"),
Prog, pam_strerror (pamh, retval));
SYSLOG((LOG_ERR, "%s", pam_strerror (pamh, retval)));
if (NULL != pamh) {
(void) pam_end (pamh, retval);
}
exit (E_PW_UPDATE);
}
(void) pam_end (pamh, retval);
#endif /* USE_PAM */
#endif /* ACCT_TOOLS_SETUID */
is_shadow_pwd = spw_file_present ();
#ifdef SHADOWGRP
is_shadow_grp = sgr_file_present ();
#endif /* SHADOWGRP */
#ifdef ENABLE_SUBIDS
is_sub_uid = sub_uid_file_present ();
is_sub_gid = sub_gid_file_present ();
#endif /* ENABLE_SUBIDS */
/*
* Start with a quick check to see if the user exists.
*/
user_name = argv[argc - 1];
{
struct passwd *pwd;
pwd = getpwnam (user_name); /* local, no need for xgetpwnam */
if (NULL == pwd) {
fprintf (stderr, _("%s: user '%s' does not exist\n"),
Prog, user_name);
#ifdef WITH_AUDIT
audit_logger (AUDIT_DEL_USER, Prog,
"deleting user not found",
user_name, AUDIT_NO_ID,
SHADOW_AUDIT_FAILURE);
#endif /* WITH_AUDIT */
exit (E_NOTFOUND);
}
user_id = pwd->pw_uid;
user_gid = pwd->pw_gid;
user_home = xstrdup (pwd->pw_dir);
}
#ifdef WITH_TCB
if (shadowtcb_set_user (user_name) == SHADOWTCB_FAILURE) {
exit (E_NOTFOUND);
}
#endif /* WITH_TCB */
#ifdef USE_NIS
/*
* Now make sure it isn't an NIS user.
*/
if (__ispwNIS ()) {
char *nis_domain;
char *nis_master;
fprintf (stderr,
_("%s: user %s is a NIS user\n"), Prog, user_name);
if ( !yp_get_default_domain (&nis_domain)
&& !yp_master (nis_domain, "passwd.byname", &nis_master)) {
fprintf (stderr,
_("%s: %s is the NIS master\n"),
Prog, nis_master);
}
exit (E_NOTFOUND);
}
#endif /* USE_NIS */
/*
* Check to make certain the user isn't logged in.
* Note: This is a best effort basis. The user may log in between,
* a cron job may be started on her behalf, etc.
*/
if (user_busy (user_name, user_id) != 0) {
if (!fflg) {
#ifdef WITH_AUDIT
audit_logger (AUDIT_DEL_USER, Prog,
"deleting user logged in",
user_name, AUDIT_NO_ID,
SHADOW_AUDIT_FAILURE);
#endif /* WITH_AUDIT */
exit (E_USER_BUSY);
}
}
/*
* Do the hard stuff - open the files, create the user entries,
* create the home directory, then close and update the files.
*/
open_files ();
update_user ();
update_groups ();
if (rflg) {
errors += remove_mailbox ();
}
if (rflg) {
int home_owned = is_owner (user_id, user_home);
if (-1 == home_owned) {
fprintf (stderr,
_("%s: %s home directory (%s) not found\n"),
Prog, user_name, user_home);
rflg = 0;
} else if ((0 == home_owned) && !fflg) {
fprintf (stderr,
_("%s: %s not owned by %s, not removing\n"),
Prog, user_home, user_name);
rflg = 0;
errors++;
/* continue */
}
}
#ifdef EXTRA_CHECK_HOME_DIR
/* This may be slow, the above should be good enough. */
if (rflg && !fflg) {
struct passwd *pwd;
/*
* For safety, refuse to remove the home directory if it
* would result in removing some other user's home
* directory. Still not perfect so be careful, but should
* prevent accidents if someone has /home or / as home
* directory... --marekm
*/
setpwent ();
while ((pwd = getpwent ())) {
if (strcmp (pwd->pw_name, user_name) == 0) {
continue;
}
if (path_prefix (user_home, pwd->pw_dir)) {
fprintf (stderr,
_("%s: not removing directory %s (would remove home of user %s)\n"),
Prog, user_home, pwd->pw_name);
rflg = false;
errors++;
/* continue */
break;
}
}
endpwent ();
}
#endif /* EXTRA_CHECK_HOME_DIR */
if (rflg) {
if (remove_tree (user_home, true) != 0) {
fprintf (stderr,
_("%s: error removing directory %s\n"),
Prog, user_home);
errors++;
/* continue */
}
#ifdef WITH_AUDIT
else
{
audit_logger (AUDIT_DEL_USER, Prog,
"deleting home directory",
user_name, (unsigned int) user_id,
SHADOW_AUDIT_SUCCESS);
}
#endif /* WITH_AUDIT */
}
#ifdef WITH_AUDIT
if (0 != errors) {
audit_logger (AUDIT_DEL_USER, Prog,
"deleting home directory",
user_name, AUDIT_NO_ID,
SHADOW_AUDIT_FAILURE);
}
#endif /* WITH_AUDIT */
#ifdef WITH_SELINUX
if (Zflg) {
if (del_seuser (user_name) != 0) {
fprintf (stderr,
_("%s: warning: the user name %s to SELinux user mapping removal failed.\n"),
Prog, user_name);
#ifdef WITH_AUDIT
audit_logger (AUDIT_ADD_USER, Prog,
"removing SELinux user mapping",
user_name, (unsigned int) user_id,
SHADOW_AUDIT_FAILURE);
#endif /* WITH_AUDIT */
fail_exit (E_SE_UPDATE);
}
}
#endif /* WITH_SELINUX */
/*
* Cancel any crontabs or at jobs. Have to do this before we remove
* the entry from /etc/passwd.
*/
user_cancel (user_name);
close_files ();
#ifdef WITH_TCB
errors += remove_tcbdir (user_name, user_id);
#endif /* WITH_TCB */
nscd_flush_cache ("passwd");
nscd_flush_cache ("group");
return ((0 != errors) ? E_HOMEDIR : E_SUCCESS);
}