f0a63185c9
src/faillog.c, src/gpasswd.c, src/groupadd.c, src/groupdel.c, src/groupmems.c, src/groupmod.c, src/grpconv.c, src/grpunconv.c, src/lastlog.c, src/newusers.c, src/passwd.c, src/pwconv.c, src/pwunconv.c, src/su.c, src/useradd.c, src/userdel.c, src/usermod.c, src/vipw.c: Align and sort options.
1119 lines
29 KiB
C
1119 lines
29 KiB
C
/*
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* Copyright (c) 1991 - 1994, Julianne Frances Haugh
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* Copyright (c) 1996 - 2000, Marek Michałkiewicz
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* Copyright (c) 2000 - 2006, Tomasz Kłoczko
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* Copyright (c) 2007 - 2011, Nicolas François
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the copyright holders or contributors may not be used to
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* endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <config.h>
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#ident "$Id$"
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#include <errno.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <grp.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <stdio.h>
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#include <sys/stat.h>
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#include <sys/stat.h>
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#ifdef ACCT_TOOLS_SETUID
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#ifdef USE_PAM
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#include "pam_defs.h"
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#endif /* USE_PAM */
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#endif /* ACCT_TOOLS_SETUID */
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#include "defines.h"
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#include "getdef.h"
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#include "groupio.h"
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#include "nscd.h"
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#include "prototypes.h"
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#include "pwauth.h"
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#include "pwio.h"
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#include "shadowio.h"
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#ifdef SHADOWGRP
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#include "sgroupio.h"
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#endif /* SHADOWGRP */
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#ifdef WITH_TCB
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#include <tcb.h>
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#include "tcbfuncs.h"
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#endif /* WITH_TCB */
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/*@-exitarg@*/
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#include "exitcodes.h"
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/*
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* exit status values
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*/
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#define E_PW_UPDATE 1 /* can't update password file */
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#define E_NOTFOUND 6 /* specified user doesn't exist */
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#define E_USER_BUSY 8 /* user currently logged in */
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#define E_GRP_UPDATE 10 /* can't update group file */
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#define E_HOMEDIR 12 /* can't remove home directory */
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/*
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* Global variables
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*/
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const char *Prog;
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static char *user_name;
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static uid_t user_id;
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static gid_t user_gid;
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static char *user_home;
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static bool fflg = false;
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static bool rflg = false;
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static bool is_shadow_pwd;
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#ifdef SHADOWGRP
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static bool is_shadow_grp;
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static bool sgr_locked = false;
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#endif /* SHADOWGRP */
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static bool pw_locked = false;
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static bool gr_locked = false;
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static bool spw_locked = false;
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/* local function prototypes */
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static void usage (int status);
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static void update_groups (void);
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static void remove_usergroup (void);
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static void close_files (void);
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static void fail_exit (int);
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static void open_files (void);
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static void update_user (void);
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static void user_cancel (const char *);
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#ifdef EXTRA_CHECK_HOME_DIR
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static bool path_prefix (const char *, const char *);
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#endif /* EXTRA_CHECK_HOME_DIR */
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static int is_owner (uid_t, const char *);
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static int remove_mailbox (void);
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#ifdef WITH_TCB
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static int remove_tcbdir (const char *user_name, uid_t user_id);
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#endif /* WITH_TCB */
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/*
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* usage - display usage message and exit
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*/
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static void usage (int status)
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{
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FILE *usageout = (E_SUCCESS != status) ? stderr : stdout;
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(void) fprintf (usageout,
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_("Usage: %s [options] LOGIN\n"
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"\n"
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"Options:\n"),
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Prog);
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(void) fputs (_(" -f, --force force removal of files,\n"
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" even if not owned by user\n"),
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usageout);
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(void) fputs (_(" -h, --help display this help message and exit\n"), usageout);
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(void) fputs (_(" -r, --remove remove home directory and mail spool\n"), usageout);
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(void) fputs (_(" -R, --root CHROOT_DIR directory to chroot into\n"), usageout);
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(void) fputs ("\n", usageout);
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exit (status);
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}
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/*
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* update_groups - delete user from secondary group set
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*
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* update_groups() takes the user name that was given and searches
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* the group files for membership in any group.
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*
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* we also check to see if they have any groups they own (the same
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* name is their user name) and delete them too (only if USERGROUPS_ENAB
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* is enabled).
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*/
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static void update_groups (void)
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{
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const struct group *grp;
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struct group *ngrp;
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#ifdef SHADOWGRP
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const struct sgrp *sgrp;
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struct sgrp *nsgrp;
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#endif /* SHADOWGRP */
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/*
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* Scan through the entire group file looking for the groups that
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* the user is a member of.
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*/
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for (gr_rewind (), grp = gr_next (); NULL != grp; grp = gr_next ()) {
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/*
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* See if the user specified this group as one of their
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* concurrent groups.
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*/
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if (!is_on_list (grp->gr_mem, user_name)) {
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continue;
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}
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/*
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* Delete the username from the list of group members and
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* update the group entry to reflect the change.
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*/
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ngrp = __gr_dup (grp);
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if (NULL == ngrp) {
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fprintf (stderr,
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_("%s: Out of memory. Cannot update %s.\n"),
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Prog, gr_dbname ());
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exit (13); /* XXX */
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}
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ngrp->gr_mem = del_list (ngrp->gr_mem, user_name);
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if (gr_update (ngrp) == 0) {
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fprintf (stderr,
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_("%s: failed to prepare the new %s entry '%s'\n"),
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Prog, gr_dbname (), ngrp->gr_name);
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exit (E_GRP_UPDATE);
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}
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/*
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* Update the DBM group file with the new entry as well.
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*/
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#ifdef WITH_AUDIT
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audit_logger (AUDIT_DEL_USER, Prog,
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"deleting user from group",
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user_name, (unsigned int) user_id,
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SHADOW_AUDIT_SUCCESS);
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#endif /* WITH_AUDIT */
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SYSLOG ((LOG_INFO, "delete '%s' from group '%s'\n",
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user_name, ngrp->gr_name));
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}
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if (getdef_bool ("USERGROUPS_ENAB")) {
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remove_usergroup ();
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}
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#ifdef SHADOWGRP
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if (!is_shadow_grp) {
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return;
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}
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/*
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* Scan through the entire shadow group file looking for the groups
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* that the user is a member of. Both the administrative list and
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* the ordinary membership list is checked.
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*/
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for (sgr_rewind (), sgrp = sgr_next ();
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NULL != sgrp;
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sgrp = sgr_next ()) {
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bool was_member, was_admin;
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/*
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* See if the user specified this group as one of their
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* concurrent groups.
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*/
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was_member = is_on_list (sgrp->sg_mem, user_name);
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was_admin = is_on_list (sgrp->sg_adm, user_name);
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if (!was_member && !was_admin) {
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continue;
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}
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nsgrp = __sgr_dup (sgrp);
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if (NULL == nsgrp) {
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fprintf (stderr,
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_("%s: Out of memory. Cannot update %s.\n"),
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Prog, sgr_dbname ());
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exit (13); /* XXX */
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}
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if (was_member) {
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nsgrp->sg_mem = del_list (nsgrp->sg_mem, user_name);
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}
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if (was_admin) {
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nsgrp->sg_adm = del_list (nsgrp->sg_adm, user_name);
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}
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if (sgr_update (nsgrp) == 0) {
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fprintf (stderr,
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_("%s: failed to prepare the new %s entry '%s'\n"),
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Prog, sgr_dbname (), nsgrp->sg_name);
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exit (E_GRP_UPDATE);
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}
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#ifdef WITH_AUDIT
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audit_logger (AUDIT_DEL_USER, Prog,
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"deleting user from shadow group",
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user_name, (unsigned int) user_id,
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SHADOW_AUDIT_SUCCESS);
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#endif /* WITH_AUDIT */
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SYSLOG ((LOG_INFO, "delete '%s' from shadow group '%s'\n",
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user_name, nsgrp->sg_name));
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}
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#endif /* SHADOWGRP */
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}
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/*
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* remove_usergroup - delete the user's group if it is a usergroup
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*
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* An usergroup is removed if
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* + it has the same name as the user
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* + it is the primary group of the user
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* + it has no other members
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* + it is not the primary group of any other user
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*/
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static void remove_usergroup (void)
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{
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const struct group *grp;
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const struct passwd *pwd = NULL;
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grp = gr_locate (user_name);
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if (NULL == grp) {
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/* This user has no usergroup. */
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return;
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}
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if (grp->gr_gid != user_gid) {
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fprintf (stderr,
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_("%s: group %s not removed because it is not the primary group of user %s.\n"),
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Prog, grp->gr_name, user_name);
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return;
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}
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if (NULL != grp->gr_mem[0]) {
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/* The usergroup has other members. */
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fprintf (stderr,
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_("%s: group %s not removed because it has other members.\n"),
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Prog, grp->gr_name);
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return;
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}
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if (!fflg) {
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/*
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* Scan the passwd file to check if this group is still
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* used as a primary group.
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*/
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setpwent ();
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while ((pwd = getpwent ()) != NULL) {
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if (strcmp (pwd->pw_name, user_name) == 0) {
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continue;
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}
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if (pwd->pw_gid == grp->gr_gid) {
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fprintf (stderr,
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_("%s: group %s is the primary group of another user and is not removed.\n"),
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Prog, grp->gr_name);
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break;
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}
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}
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endpwent ();
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}
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if (NULL == pwd) {
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/*
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* We can remove this group, it is not the primary
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* group of any remaining user.
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*/
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if (gr_remove (grp->gr_name) == 0) {
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fprintf (stderr,
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_("%s: cannot remove entry '%s' from %s\n"),
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Prog, grp->gr_name, gr_dbname ());
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fail_exit (E_GRP_UPDATE);
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}
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#ifdef WITH_AUDIT
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audit_logger (AUDIT_DEL_GROUP, Prog,
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"deleting group",
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grp->gr_name, AUDIT_NO_ID,
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SHADOW_AUDIT_SUCCESS);
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#endif /* WITH_AUDIT */
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SYSLOG ((LOG_INFO,
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"removed group '%s' owned by '%s'\n",
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grp->gr_name, user_name));
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#ifdef SHADOWGRP
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if (sgr_locate (user_name) != NULL) {
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if (sgr_remove (user_name) == 0) {
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fprintf (stderr,
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_("%s: cannot remove entry '%s' from %s\n"),
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Prog, user_name, sgr_dbname ());
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fail_exit (E_GRP_UPDATE);
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}
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#ifdef WITH_AUDIT
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audit_logger (AUDIT_DEL_GROUP, Prog,
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"deleting shadow group",
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grp->gr_name, AUDIT_NO_ID,
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SHADOW_AUDIT_SUCCESS);
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#endif /* WITH_AUDIT */
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SYSLOG ((LOG_INFO,
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"removed shadow group '%s' owned by '%s'\n",
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grp->gr_name, user_name));
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}
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#endif /* SHADOWGRP */
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}
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}
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/*
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* close_files - close all of the files that were opened
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*
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* close_files() closes all of the files that were opened for this
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* new user. This causes any modified entries to be written out.
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*/
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static void close_files (void)
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{
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if (pw_close () == 0) {
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fprintf (stderr, _("%s: failure while writing changes to %s\n"), Prog, pw_dbname ());
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SYSLOG ((LOG_ERR, "failure while writing changes to %s", pw_dbname ()));
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fail_exit (E_PW_UPDATE);
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}
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if (pw_unlock () == 0) {
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fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, pw_dbname ());
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SYSLOG ((LOG_ERR, "failed to unlock %s", pw_dbname ()));
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/* continue */
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}
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pw_locked = false;
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if (is_shadow_pwd) {
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if (spw_close () == 0) {
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fprintf (stderr,
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_("%s: failure while writing changes to %s\n"), Prog, spw_dbname ());
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SYSLOG ((LOG_ERR, "failure while writing changes to %s", spw_dbname ()));
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fail_exit (E_PW_UPDATE);
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}
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if (spw_unlock () == 0) {
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fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, spw_dbname ());
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SYSLOG ((LOG_ERR, "failed to unlock %s", spw_dbname ()));
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/* continue */
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}
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spw_locked = false;
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}
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if (gr_close () == 0) {
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fprintf (stderr, _("%s: failure while writing changes to %s\n"), Prog, gr_dbname ());
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SYSLOG ((LOG_ERR, "failure while writing changes to %s", gr_dbname ()));
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fail_exit (E_GRP_UPDATE);
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}
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if (gr_unlock () == 0) {
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fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, gr_dbname ());
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SYSLOG ((LOG_ERR, "failed to unlock %s", gr_dbname ()));
|
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/* continue */
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}
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gr_locked = false;
|
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|
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#ifdef SHADOWGRP
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if (is_shadow_grp) {
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if (sgr_close () == 0) {
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fprintf (stderr,
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_("%s: failure while writing changes to %s\n"), Prog, sgr_dbname ());
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SYSLOG ((LOG_ERR, "failure while writing changes to %s", sgr_dbname ()));
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fail_exit (E_GRP_UPDATE);
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}
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|
|
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if (sgr_unlock () == 0) {
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fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, sgr_dbname ());
|
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SYSLOG ((LOG_ERR, "failed to unlock %s", sgr_dbname ()));
|
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/* continue */
|
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}
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sgr_locked = false;
|
|
}
|
|
#endif /* SHADOWGRP */
|
|
}
|
|
|
|
/*
|
|
* fail_exit - exit with a failure code after unlocking the files
|
|
*/
|
|
static void fail_exit (int code)
|
|
{
|
|
if (pw_locked) {
|
|
if (pw_unlock () == 0) {
|
|
fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, pw_dbname ());
|
|
SYSLOG ((LOG_ERR, "failed to unlock %s", pw_dbname ()));
|
|
/* continue */
|
|
}
|
|
}
|
|
if (gr_locked) {
|
|
if (gr_unlock () == 0) {
|
|
fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, gr_dbname ());
|
|
SYSLOG ((LOG_ERR, "failed to unlock %s", gr_dbname ()));
|
|
/* continue */
|
|
}
|
|
}
|
|
if (spw_locked) {
|
|
if (spw_unlock () == 0) {
|
|
fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, spw_dbname ());
|
|
SYSLOG ((LOG_ERR, "failed to unlock %s", spw_dbname ()));
|
|
/* continue */
|
|
}
|
|
}
|
|
#ifdef SHADOWGRP
|
|
if (sgr_locked) {
|
|
if (sgr_unlock () == 0) {
|
|
fprintf (stderr, _("%s: failed to unlock %s\n"), Prog, sgr_dbname ());
|
|
SYSLOG ((LOG_ERR, "failed to unlock %s", sgr_dbname ()));
|
|
/* continue */
|
|
}
|
|
}
|
|
#endif /* SHADOWGRP */
|
|
|
|
#ifdef WITH_AUDIT
|
|
audit_logger (AUDIT_DEL_USER, Prog,
|
|
"deleting user",
|
|
user_name, (unsigned int) user_id,
|
|
SHADOW_AUDIT_FAILURE);
|
|
#endif /* WITH_AUDIT */
|
|
|
|
exit (code);
|
|
}
|
|
|
|
/*
|
|
* open_files - lock and open the password files
|
|
*
|
|
* open_files() opens the two password files.
|
|
*/
|
|
|
|
static void open_files (void)
|
|
{
|
|
if (pw_lock () == 0) {
|
|
fprintf (stderr,
|
|
_("%s: cannot lock %s; try again later.\n"),
|
|
Prog, pw_dbname ());
|
|
#ifdef WITH_AUDIT
|
|
audit_logger (AUDIT_DEL_USER, Prog,
|
|
"locking password file",
|
|
user_name, (unsigned int) user_id,
|
|
SHADOW_AUDIT_FAILURE);
|
|
#endif /* WITH_AUDIT */
|
|
fail_exit (E_PW_UPDATE);
|
|
}
|
|
pw_locked = true;
|
|
if (pw_open (O_RDWR) == 0) {
|
|
fprintf (stderr,
|
|
_("%s: cannot open %s\n"), Prog, pw_dbname ());
|
|
#ifdef WITH_AUDIT
|
|
audit_logger (AUDIT_DEL_USER, Prog,
|
|
"opening password file",
|
|
user_name, (unsigned int) user_id,
|
|
SHADOW_AUDIT_FAILURE);
|
|
#endif /* WITH_AUDIT */
|
|
fail_exit (E_PW_UPDATE);
|
|
}
|
|
if (is_shadow_pwd) {
|
|
if (spw_lock () == 0) {
|
|
fprintf (stderr,
|
|
_("%s: cannot lock %s; try again later.\n"),
|
|
Prog, spw_dbname ());
|
|
#ifdef WITH_AUDIT
|
|
audit_logger (AUDIT_DEL_USER, Prog,
|
|
"locking shadow password file",
|
|
user_name, (unsigned int) user_id,
|
|
SHADOW_AUDIT_FAILURE);
|
|
#endif /* WITH_AUDIT */
|
|
fail_exit (E_PW_UPDATE);
|
|
}
|
|
spw_locked = true;
|
|
if (spw_open (O_RDWR) == 0) {
|
|
fprintf (stderr,
|
|
_("%s: cannot open %s\n"),
|
|
Prog, spw_dbname ());
|
|
#ifdef WITH_AUDIT
|
|
audit_logger (AUDIT_DEL_USER, Prog,
|
|
"opening shadow password file",
|
|
user_name, (unsigned int) user_id,
|
|
SHADOW_AUDIT_FAILURE);
|
|
#endif /* WITH_AUDIT */
|
|
fail_exit (E_PW_UPDATE);
|
|
}
|
|
}
|
|
if (gr_lock () == 0) {
|
|
fprintf (stderr,
|
|
_("%s: cannot lock %s; try again later.\n"),
|
|
Prog, gr_dbname ());
|
|
#ifdef WITH_AUDIT
|
|
audit_logger (AUDIT_DEL_USER, Prog,
|
|
"locking group file",
|
|
user_name, (unsigned int) user_id,
|
|
SHADOW_AUDIT_FAILURE);
|
|
#endif /* WITH_AUDIT */
|
|
fail_exit (E_GRP_UPDATE);
|
|
}
|
|
gr_locked = true;
|
|
if (gr_open (O_RDWR) == 0) {
|
|
fprintf (stderr, _("%s: cannot open %s\n"), Prog, gr_dbname ());
|
|
#ifdef WITH_AUDIT
|
|
audit_logger (AUDIT_DEL_USER, Prog,
|
|
"opening group file",
|
|
user_name, (unsigned int) user_id,
|
|
SHADOW_AUDIT_FAILURE);
|
|
#endif /* WITH_AUDIT */
|
|
fail_exit (E_GRP_UPDATE);
|
|
}
|
|
#ifdef SHADOWGRP
|
|
if (is_shadow_grp) {
|
|
if (sgr_lock () == 0) {
|
|
fprintf (stderr,
|
|
_("%s: cannot lock %s; try again later.\n"),
|
|
Prog, sgr_dbname ());
|
|
#ifdef WITH_AUDIT
|
|
audit_logger (AUDIT_DEL_USER, Prog,
|
|
"locking shadow group file",
|
|
user_name, (unsigned int) user_id,
|
|
SHADOW_AUDIT_FAILURE);
|
|
#endif /* WITH_AUDIT */
|
|
fail_exit (E_GRP_UPDATE);
|
|
}
|
|
sgr_locked= true;
|
|
if (sgr_open (O_RDWR) == 0) {
|
|
fprintf (stderr, _("%s: cannot open %s\n"),
|
|
Prog, sgr_dbname ());
|
|
#ifdef WITH_AUDIT
|
|
audit_logger (AUDIT_DEL_USER, Prog,
|
|
"opening shadow group file",
|
|
user_name, (unsigned int) user_id,
|
|
SHADOW_AUDIT_FAILURE);
|
|
#endif /* WITH_AUDIT */
|
|
fail_exit (E_GRP_UPDATE);
|
|
}
|
|
}
|
|
#endif /* SHADOWGRP */
|
|
}
|
|
|
|
/*
|
|
* update_user - delete the user entries
|
|
*
|
|
* update_user() deletes the password file entries for this user
|
|
* and will update the group entries as required.
|
|
*/
|
|
static void update_user (void)
|
|
{
|
|
if (pw_remove (user_name) == 0) {
|
|
fprintf (stderr,
|
|
_("%s: cannot remove entry '%s' from %s\n"),
|
|
Prog, user_name, pw_dbname ());
|
|
fail_exit (E_PW_UPDATE);
|
|
}
|
|
if ( is_shadow_pwd
|
|
&& (spw_locate (user_name) != NULL)
|
|
&& (spw_remove (user_name) == 0)) {
|
|
fprintf (stderr,
|
|
_("%s: cannot remove entry '%s' from %s\n"),
|
|
Prog, user_name, spw_dbname ());
|
|
fail_exit (E_PW_UPDATE);
|
|
}
|
|
#ifdef WITH_AUDIT
|
|
audit_logger (AUDIT_DEL_USER, Prog,
|
|
"deleting user entries",
|
|
user_name, (unsigned int) user_id,
|
|
SHADOW_AUDIT_SUCCESS);
|
|
#endif /* WITH_AUDIT */
|
|
SYSLOG ((LOG_INFO, "delete user '%s'\n", user_name));
|
|
}
|
|
|
|
/*
|
|
* user_cancel - cancel cron and at jobs
|
|
*
|
|
* user_cancel calls a script for additional cleanups like removal of
|
|
* cron, at, or print jobs.
|
|
*/
|
|
|
|
static void user_cancel (const char *user)
|
|
{
|
|
const char *cmd;
|
|
const char *argv[3];
|
|
int status;
|
|
|
|
cmd = getdef_str ("USERDEL_CMD");
|
|
if (NULL == cmd) {
|
|
return;
|
|
}
|
|
argv[0] = cmd;
|
|
argv[1] = user;
|
|
argv[2] = (char *)0;
|
|
(void) run_command (cmd, argv, NULL, &status);
|
|
}
|
|
|
|
#ifdef EXTRA_CHECK_HOME_DIR
|
|
static bool path_prefix (const char *s1, const char *s2)
|
|
{
|
|
return ( (strncmp (s2, s1, strlen (s1)) == 0)
|
|
&& ( ('\0' == s2[strlen (s1)])
|
|
|| ('/' == s2[strlen (s1)])));
|
|
}
|
|
#endif /* EXTRA_CHECK_HOME_DIR */
|
|
|
|
/*
|
|
* is_owner - Check if path is owned by uid
|
|
*
|
|
* Return
|
|
* 1: path exists and is owned by uid
|
|
* 0: path is not owned by uid, or a failure occurred
|
|
* -1: path does not exist
|
|
*/
|
|
static int is_owner (uid_t uid, const char *path)
|
|
{
|
|
struct stat st;
|
|
|
|
errno = 0;
|
|
if (stat (path, &st) != 0) {
|
|
if ((ENOENT == errno) || (ENOTDIR == errno)) {
|
|
/* The file or directory does not exist */
|
|
return -1;
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
return (st.st_uid == uid) ? 1 : 0;
|
|
}
|
|
|
|
static int remove_mailbox (void)
|
|
{
|
|
const char *maildir;
|
|
char mailfile[1024];
|
|
int i;
|
|
int errors = 0;
|
|
|
|
maildir = getdef_str ("MAIL_DIR");
|
|
#ifdef MAIL_SPOOL_DIR
|
|
if ((NULL == maildir) && (getdef_str ("MAIL_FILE") == NULL)) {
|
|
maildir = MAIL_SPOOL_DIR;
|
|
}
|
|
#endif /* MAIL_SPOOL_DIR */
|
|
if (NULL == maildir) {
|
|
return 0;
|
|
}
|
|
snprintf (mailfile, sizeof mailfile, "%s/%s", maildir, user_name);
|
|
|
|
if (access (mailfile, F_OK) != 0) {
|
|
if (ENOENT == errno) {
|
|
fprintf (stderr,
|
|
_("%s: %s mail spool (%s) not found\n"),
|
|
Prog, user_name, mailfile);
|
|
return 0;
|
|
} else {
|
|
fprintf (stderr,
|
|
_("%s: warning: can't remove %s: %s\n"),
|
|
Prog, mailfile, strerror (errno));
|
|
SYSLOG ((LOG_ERR, "Cannot remove %s: %s", mailfile, strerror (errno)));
|
|
#ifdef WITH_AUDIT
|
|
audit_logger (AUDIT_DEL_USER, Prog,
|
|
"deleting mail file",
|
|
user_name, (unsigned int) user_id,
|
|
SHADOW_AUDIT_FAILURE);
|
|
#endif /* WITH_AUDIT */
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (fflg) {
|
|
if (unlink (mailfile) != 0) {
|
|
fprintf (stderr,
|
|
_("%s: warning: can't remove %s: %s\n"),
|
|
Prog, mailfile, strerror (errno));
|
|
SYSLOG ((LOG_ERR, "Cannot remove %s: %s", mailfile, strerror (errno)));
|
|
#ifdef WITH_AUDIT
|
|
audit_logger (AUDIT_DEL_USER, Prog,
|
|
"deleting mail file",
|
|
user_name, (unsigned int) user_id,
|
|
SHADOW_AUDIT_FAILURE);
|
|
#endif /* WITH_AUDIT */
|
|
errors = 1;
|
|
/* continue */
|
|
}
|
|
#ifdef WITH_AUDIT
|
|
else
|
|
{
|
|
audit_logger (AUDIT_DEL_USER, Prog,
|
|
"deleting mail file",
|
|
user_name, (unsigned int) user_id,
|
|
SHADOW_AUDIT_SUCCESS);
|
|
}
|
|
#endif /* WITH_AUDIT */
|
|
return errors;
|
|
}
|
|
i = is_owner (user_id, mailfile);
|
|
if (i == 0) {
|
|
fprintf (stderr,
|
|
_("%s: %s not owned by %s, not removing\n"),
|
|
Prog, mailfile, user_name);
|
|
SYSLOG ((LOG_ERR,
|
|
"%s not owned by %s, not removed",
|
|
mailfile, strerror (errno)));
|
|
#ifdef WITH_AUDIT
|
|
audit_logger (AUDIT_DEL_USER, Prog,
|
|
"deleting mail file",
|
|
user_name, (unsigned int) user_id,
|
|
SHADOW_AUDIT_FAILURE);
|
|
#endif /* WITH_AUDIT */
|
|
return 1;
|
|
} else if (i == -1) {
|
|
return 0; /* mailbox doesn't exist */
|
|
}
|
|
if (unlink (mailfile) != 0) {
|
|
fprintf (stderr,
|
|
_("%s: warning: can't remove %s: %s\n"),
|
|
Prog, mailfile, strerror (errno));
|
|
SYSLOG ((LOG_ERR, "Cannot remove %s: %s", mailfile, strerror (errno)));
|
|
#ifdef WITH_AUDIT
|
|
audit_logger (AUDIT_DEL_USER, Prog,
|
|
"deleting mail file",
|
|
user_name, (unsigned int) user_id,
|
|
SHADOW_AUDIT_FAILURE);
|
|
#endif /* WITH_AUDIT */
|
|
errors = 1;
|
|
/* continue */
|
|
}
|
|
#ifdef WITH_AUDIT
|
|
else
|
|
{
|
|
audit_logger (AUDIT_DEL_USER, Prog,
|
|
"deleting mail file",
|
|
user_name, (unsigned int) user_id,
|
|
SHADOW_AUDIT_SUCCESS);
|
|
}
|
|
#endif /* WITH_AUDIT */
|
|
return errors;
|
|
}
|
|
|
|
#ifdef WITH_TCB
|
|
static int remove_tcbdir (const char *user_name, uid_t user_id)
|
|
{
|
|
char *buf;
|
|
int ret = 0;
|
|
size_t bufsize = (sizeof TCB_DIR) + strlen (user_name) + 2;
|
|
|
|
if (!getdef_bool ("USE_TCB")) {
|
|
return 0;
|
|
}
|
|
|
|
buf = malloc (buflen);
|
|
if (NULL == buf) {
|
|
fprintf (stderr, _("%s: Can't allocate memory, "
|
|
"tcb entry for %s not removed.\n"),
|
|
Prog, user_name);
|
|
return 1;
|
|
}
|
|
snprintf (buf, buflen, TCB_DIR "/%s", user_name);
|
|
if (shadowtcb_drop_priv () == SHADOWTCB_FAILURE) {
|
|
fprintf (stderr, _("%s: Cannot drop privileges: %s\n"),
|
|
Prog, strerror (errno));
|
|
shadowtcb_gain_priv ();
|
|
free (buf);
|
|
return 1;
|
|
}
|
|
/* Only remove directory contents with dropped privileges.
|
|
* We will regain them and remove the user's tcb directory afterwards.
|
|
*/
|
|
if (remove_tree (buf, false) != 0) {
|
|
fprintf (stderr, _("%s: Cannot remove the content of %s: %s\n"),
|
|
Prog, buf, strerror (errno));
|
|
shadowtcb_gain_priv ();
|
|
free (buf);
|
|
return 1;
|
|
}
|
|
shadowtcb_gain_priv ();
|
|
free (buf);
|
|
if (shadowtcb_remove (user_name) == SHADOWTCB_FAILURE) {
|
|
fprintf (stderr, _("%s: Cannot remove tcb files for %s: %s\n"),
|
|
Prog, user_name, strerror (errno));
|
|
ret = 1;
|
|
}
|
|
return ret;
|
|
}
|
|
#endif /* WITH_TCB */
|
|
|
|
/*
|
|
* 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'},
|
|
{NULL, 0, NULL, '\0'}
|
|
};
|
|
while ((c = getopt_long (argc, argv, "fhrR:",
|
|
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;
|
|
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 (NULL != pamh) {
|
|
(void) pam_end (pamh, retval);
|
|
}
|
|
if (PAM_SUCCESS != retval) {
|
|
fprintf (stderr, _("%s: PAM authentication failed\n"), Prog);
|
|
exit (E_PW_UPDATE);
|
|
}
|
|
#endif /* USE_PAM */
|
|
#endif /* ACCT_TOOLS_SETUID */
|
|
|
|
is_shadow_pwd = spw_file_present ();
|
|
#ifdef SHADOWGRP
|
|
is_shadow_grp = sgr_file_present ();
|
|
#endif /* SHADOWGRP */
|
|
|
|
/*
|
|
* 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 (is_selinux_enabled () > 0) {
|
|
const char *args[5];
|
|
args[0] = "/usr/sbin/semanage";
|
|
args[1] = "login";
|
|
args[2] = "-d";
|
|
args[3] = user_name;
|
|
args[4] = NULL;
|
|
safe_system (args[0], args, NULL, true);
|
|
}
|
|
#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);
|
|
}
|
|
|