/*
- * Copyright 1991 - 1993, Julianne Frances Haugh
+ * Copyright (c) 1991 - 1993, Julianne Frances Haugh
+ * Copyright (c) 1996 - 2000, Marek Michałkiewicz
+ * Copyright (c) 2000 - 2006, Tomasz Kłoczko
+ * Copyright (c) 2007 - 2009, Nicolas François
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
- * 3. Neither the name of Julianne F. Haugh nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
+ * 3. The name of the copyright holders or contributors may not be used to
+ * endorse or promote products derived from this software without
+ * specific prior written permission.
*
- * THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <config.h>
-#include "rcsid.h"
-RCSID(PKG_VER "$Id: groupadd.c,v 1.15 2000/08/26 18:27:18 marekm Exp $")
+#ident "$Id$"
-#include <sys/types.h>
-#include <stdio.h>
-#include <grp.h>
#include <ctype.h>
#include <fcntl.h>
-
-#include "defines.h"
-#include "prototypes.h"
+#include <getopt.h>
+#include <grp.h>
+#include <stdio.h>
+#include <sys/types.h>
+#ifdef ACCT_TOOLS_SETUID
+#ifdef USE_PAM
+#include "pam_defs.h"
+#include <pwd.h>
+#endif /* USE_PAM */
+#endif /* ACCT_TOOLS_SETUID */
#include "chkname.h"
-
+#include "defines.h"
#include "getdef.h"
-
#include "groupio.h"
-
+#include "nscd.h"
+#include "prototypes.h"
#ifdef SHADOWGRP
#include "sgroupio.h"
-
-static int is_shadow_grp;
#endif
/*
* exit status values
*/
-
+/*@-exitarg@*/
#define E_SUCCESS 0 /* success */
#define E_USAGE 2 /* invalid command syntax */
#define E_BAD_ARG 3 /* invalid argument to option */
#define E_GID_IN_USE 4 /* gid not unique (when -o not used) */
-#define E_NAME_IN_USE 9 /* group name nut unique */
+#define E_NAME_IN_USE 9 /* group name not unique */
#define E_GRP_UPDATE 10 /* can't update group file */
-static char *group_name;
-static gid_t group_id;
-static char *empty_list = NULL;
+/*
+ * Global variables
+ */
+const char *Prog;
-static char *Prog;
+static /*@null@*/char *group_name;
+static gid_t group_id;
+static /*@null@*/char *group_passwd;
+static /*@null@*/char *empty_list = NULL;
-static int oflg = 0; /* permit non-unique group ID to be specified with -g */
-static int gflg = 0; /* ID value for the new group */
-static int fflg = 0; /* if group already exists, do nothing and exit(0) */
+static bool oflg = false; /* permit non-unique group ID to be specified with -g */
+static bool gflg = false; /* ID value for the new group */
+static bool fflg = false; /* if group already exists, do nothing and exit(0) */
+static bool rflg = false; /* create a system account */
+static bool pflg = false; /* new encrypted password */
-#ifdef NDBM
-extern int gr_dbm_mode;
-extern int sg_dbm_mode;
+#ifdef SHADOWGRP
+static bool is_shadow_grp;
#endif
-extern int optind;
-extern char *optarg;
-
/* local function prototypes */
-static void usage(void);
-static void new_grent(struct group *);
+static void usage (int status);
+static void new_grent (struct group *grent);
+
#ifdef SHADOWGRP
-static void new_sgent(struct sgrp *);
+static void new_sgent (struct sgrp *sgent);
#endif
-static void grp_update(void);
-static void find_new_gid(void);
-static void check_new_name(void);
-static void process_flags(int, char **);
-static void close_files(void);
-static void open_files(void);
-static void fail_exit(int);
+static void grp_update (void);
+static void check_new_name (void);
+static void close_files (void);
+static void open_files (void);
+static void process_flags (int argc, char **argv);
+static void check_flags (void);
+static void check_perms (void);
/*
* usage - display usage message and exit
*/
-
-static void
-usage(void)
+static void usage (int status)
{
- fprintf(stderr, _("usage: groupadd [-g gid [-o]] group\n"));
- exit(E_USAGE);
+ FILE *usageout = (E_SUCCESS != status) ? stderr : stdout;
+ (void) fprintf (usageout,
+ _("Usage: %s [options] GROUP\n"
+ "\n"
+ "Options:\n"),
+ Prog);
+ (void) fputs (_(" -f, --force exit successfully if the group already exists,\n"
+ " and cancel -g if the GID is already used\n"), usageout);
+ (void) fputs (_(" -g, --gid GID use GID for the new group\n"), usageout);
+ (void) fputs (_(" -h, --help display this help message and exit\n"), usageout);
+ (void) fputs (_(" -K, --key KEY=VALUE override /etc/login.defs defaults\n"), usageout);
+ (void) fputs (_(" -o, --non-unique allow to create groups with duplicate\n"
+ " (non-unique) GID\n"), usageout);
+ (void) fputs (_(" -p, --password PASSWORD use this encrypted password for the new group\n"), usageout);
+ (void) fputs (_(" -r, --system create a system account\n"), usageout);
+ (void) fputs ("\n", usageout);
+ exit (status);
}
/*
* new_grent - initialize the values in a group file entry
*
- * new_grent() takes all of the values that have been entered and
- * fills in a (struct group) with them.
+ * new_grent() takes all of the values that have been entered and fills
+ * in a (struct group) with them.
*/
-
-static void
-new_grent(struct group *grent)
+static void new_grent (struct group *grent)
{
- memzero(grent, sizeof *grent);
+ memzero (grent, sizeof *grent);
grent->gr_name = group_name;
- grent->gr_passwd = SHADOW_PASSWD_STRING; /* XXX warning: const */
+ if (pflg) {
+ grent->gr_passwd = group_passwd;
+ } else {
+ grent->gr_passwd = SHADOW_PASSWD_STRING; /* XXX warning: const */
+ }
grent->gr_gid = group_id;
grent->gr_mem = &empty_list;
}
/*
* new_sgent - initialize the values in a shadow group file entry
*
- * new_sgent() takes all of the values that have been entered and
- * fills in a (struct sgrp) with them.
+ * new_sgent() takes all of the values that have been entered and fills
+ * in a (struct sgrp) with them.
*/
-
-static void
-new_sgent(struct sgrp *sgent)
+static void new_sgent (struct sgrp *sgent)
{
- memzero(sgent, sizeof *sgent);
+ memzero (sgent, sizeof *sgent);
sgent->sg_name = group_name;
- sgent->sg_passwd = "!"; /* XXX warning: const */
+ if (pflg) {
+ sgent->sg_passwd = group_passwd;
+ } else {
+ sgent->sg_passwd = "!"; /* XXX warning: const */
+ }
sgent->sg_adm = &empty_list;
sgent->sg_mem = &empty_list;
}
-#endif /* SHADOWGRP */
+#endif /* SHADOWGRP */
/*
* grp_update - add new group file entries
*
* grp_update() writes the new records to the group files.
*/
-
-static void
-grp_update(void)
+static void grp_update (void)
{
- struct group grp;
+ struct group grp;
+
#ifdef SHADOWGRP
- struct sgrp sgrp;
-#endif /* SHADOWGRP */
+ struct sgrp sgrp;
+#endif /* SHADOWGRP */
/*
- * Create the initial entries for this new group.
+ * To add the group, we need to update /etc/group.
+ * Make sure failures will be reported.
*/
-
- new_grent (&grp);
+ add_cleanup (cleanup_report_add_group_group, group_name);
#ifdef SHADOWGRP
- new_sgent (&sgrp);
-#endif /* SHADOWGRP */
+ if (is_shadow_grp) {
+ /* We also need to update /etc/gshadow */
+ add_cleanup (cleanup_report_add_group_gshadow, group_name);
+ }
+#endif
/*
- * Write out the new group file entry.
+ * Create the initial entries for this new group.
*/
-
- if (! gr_update (&grp)) {
- fprintf(stderr, _("%s: error adding new group entry\n"), Prog);
- fail_exit(E_GRP_UPDATE);
+ new_grent (&grp);
+#ifdef SHADOWGRP
+ new_sgent (&sgrp);
+ if (is_shadow_grp && pflg) {
+ grp.gr_passwd = SHADOW_PASSWD_STRING; /* XXX warning: const */
}
-#ifdef NDBM
+#endif /* SHADOWGRP */
/*
- * Update the DBM group file with the new entry as well.
+ * Write out the new group file entry.
*/
-
- if (gr_dbm_present() && ! gr_dbm_update (&grp)) {
- fprintf(stderr, _("%s: cannot add new dbm group entry\n"), Prog);
- fail_exit(E_GRP_UPDATE);
+ if (gr_update (&grp) == 0) {
+ fprintf (stderr,
+ _("%s: failed to prepare the new %s entry '%s'\n"),
+ Prog, gr_dbname (), grp.gr_name);
+ exit (E_GRP_UPDATE);
}
- endgrent ();
-#endif /* NDBM */
-
#ifdef SHADOWGRP
-
/*
* Write out the new shadow group entries as well.
*/
-
- if (is_shadow_grp && ! sgr_update (&sgrp)) {
- fprintf(stderr, _("%s: error adding new group entry\n"), Prog);
- fail_exit(E_GRP_UPDATE);
+ if (is_shadow_grp && (sgr_update (&sgrp) == 0)) {
+ fprintf (stderr,
+ _("%s: failed to prepare the new %s entry '%s'\n"),
+ Prog, sgr_dbname (), sgrp.sg_name);
+ exit (E_GRP_UPDATE);
}
-#ifdef NDBM
-
- /*
- * Update the DBM group file with the new entry as well.
- */
-
- if (is_shadow_grp && sg_dbm_present() && ! sg_dbm_update (&sgrp)) {
- fprintf(stderr, _("%s: cannot add new dbm group entry\n"), Prog);
- fail_exit(E_GRP_UPDATE);
- }
- endsgent ();
-#endif /* NDBM */
-#endif /* SHADOWGRP */
- SYSLOG((LOG_INFO, "new group: name=%s, gid=%d\n",
- group_name, group_id));
+#endif /* SHADOWGRP */
}
/*
- * find_new_gid - find the next available GID
+ * check_new_name - check the new name for validity
*
- * find_new_gid() locates the next highest unused GID in the group
- * file, or checks the given group ID against the existing ones for
- * uniqueness.
+ * check_new_name() insures that the new name doesn't contain any
+ * illegal characters.
*/
-
-static void
-find_new_gid(void)
+static void check_new_name (void)
{
- const struct group *grp;
- gid_t gid_min, gid_max;
-
- gid_min = getdef_num("GID_MIN", 100);
- gid_max = getdef_num("GID_MAX", 60000);
+ if (is_valid_group_name (group_name)) {
+ return;
+ }
/*
- * Start with some GID value if the user didn't provide us with
- * one already.
+ * All invalid group names land here.
*/
- if (! gflg)
- group_id = gid_min;
+ fprintf (stderr, _("%s: '%s' is not a valid group name\n"),
+ Prog, group_name);
- /*
- * Search the entire group file, either looking for this
- * GID (if the user specified one with -g) or looking for the
- * largest unused value.
- */
+ exit (E_BAD_ARG);
+}
-#ifdef NO_GETGRENT
- gr_rewind();
- while ((grp = gr_next())) {
-#else
- setgrent();
- while ((grp = getgrent())) {
+/*
+ * close_files - close all of the files that were opened
+ *
+ * close_files() closes all of the files that were opened for this new
+ * group. This causes any modified entries to be written out.
+ */
+static void close_files (void)
+{
+ /* First, write the changes in the regular group database */
+ if (gr_close () == 0) {
+ fprintf (stderr,
+ _("%s: failure while writing changes to %s\n"),
+ Prog, gr_dbname ());
+ exit (E_GRP_UPDATE);
+ }
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_ADD_GROUP, Prog,
+ "adding group to /etc/group",
+ group_name, (unsigned int) group_id,
+ SHADOW_AUDIT_SUCCESS);
#endif
- if (strcmp(group_name, grp->gr_name) == 0) {
- if (fflg) {
- fail_exit(E_SUCCESS);
- }
- fprintf(stderr, _("%s: name %s is not unique\n"),
- Prog, group_name);
- fail_exit(E_NAME_IN_USE);
+ SYSLOG ((LOG_INFO, "group added to %s: name=%s, GID=%u",
+ gr_dbname (), group_name, (unsigned int) group_id));
+ del_cleanup (cleanup_report_add_group_group);
+
+ cleanup_unlock_group (NULL);
+ del_cleanup (cleanup_unlock_group);
+
+ /* Now, write the changes in the shadow database */
+#ifdef SHADOWGRP
+ if (is_shadow_grp) {
+ if (sgr_close () == 0) {
+ fprintf (stderr,
+ _("%s: failure while writing changes to %s\n"),
+ Prog, sgr_dbname ());
+ exit (E_GRP_UPDATE);
}
- if (gflg && group_id == grp->gr_gid) {
- if (fflg) {
- /* turn off -g and search again */
- gflg = 0;
-#ifdef NO_GETGRENT
- gr_rewind();
-#else
- setgrent();
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_ADD_GROUP, Prog,
+ "adding group to /etc/gshadow",
+ group_name, (unsigned int) group_id,
+ SHADOW_AUDIT_SUCCESS);
#endif
- continue;
- }
- fprintf(stderr, _("%s: gid %ld is not unique\n"),
- Prog, (long) group_id);
- fail_exit(E_GID_IN_USE);
- }
- if (! gflg && grp->gr_gid >= group_id) {
- if (grp->gr_gid > gid_max)
- continue;
- group_id = grp->gr_gid + 1;
- }
+ SYSLOG ((LOG_INFO, "group added to %s: name=%s",
+ sgr_dbname (), group_name));
+ del_cleanup (cleanup_report_add_group_gshadow);
+
+ cleanup_unlock_gshadow (NULL);
+ del_cleanup (cleanup_unlock_gshadow);
}
- if (!gflg && group_id == gid_max + 1) {
- for (group_id = gid_min; group_id < gid_max; group_id++) {
-#ifdef NO_GETGRENT
- gr_rewind();
- while ((grp = gr_next()) && grp->gr_gid != group_id)
- ;
- if (!grp)
- break;
-#else
- if (!getgrgid(group_id))
- break;
+#endif /* SHADOWGRP */
+
+ /* Report success at the system level */
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_ADD_GROUP, Prog,
+ "",
+ group_name, (unsigned int) group_id,
+ SHADOW_AUDIT_SUCCESS);
#endif
- }
- if (group_id == gid_max) {
- fprintf(stderr, _("%s: can't get unique gid\n"),
- Prog);
- fail_exit(E_GID_IN_USE);
- }
- }
+ SYSLOG ((LOG_INFO, "new group: name=%s, GID=%u",
+ group_name, (unsigned int) group_id));
+ del_cleanup (cleanup_report_add_group);
}
/*
- * check_new_name - check the new name for validity
+ * open_files - lock and open the group files
*
- * check_new_name() insures that the new name doesn't contain
- * any illegal characters.
+ * open_files() opens the two group files.
*/
-
-static void
-check_new_name(void)
+static void open_files (void)
{
- if (check_group_name(group_name))
- return;
+ /* First, lock the databases */
+ if (gr_lock () == 0) {
+ fprintf (stderr,
+ _("%s: cannot lock %s; try again later.\n"),
+ Prog, gr_dbname ());
+ exit (E_GRP_UPDATE);
+ }
+ add_cleanup (cleanup_unlock_group, NULL);
+
+#ifdef SHADOWGRP
+ if (is_shadow_grp) {
+ if (sgr_lock () == 0) {
+ fprintf (stderr,
+ _("%s: cannot lock %s; try again later.\n"),
+ Prog, sgr_dbname ());
+ exit (E_GRP_UPDATE);
+ }
+ add_cleanup (cleanup_unlock_gshadow, NULL);
+ }
+#endif /* SHADOWGRP */
/*
- * All invalid group names land here.
+ * Now if the group is not added, it's our fault.
+ * Make sure failures will be reported.
*/
+ add_cleanup (cleanup_report_add_group, group_name);
- fprintf(stderr, _("%s: %s is a not a valid group name\n"),
- Prog, group_name);
+ /* And now open the databases */
+ if (gr_open (O_RDWR) == 0) {
+ fprintf (stderr, _("%s: cannot open %s\n"), Prog, gr_dbname ());
+ SYSLOG ((LOG_WARN, "cannot open %s", gr_dbname ()));
+ exit (E_GRP_UPDATE);
+ }
- exit(E_BAD_ARG);
+#ifdef SHADOWGRP
+ if (is_shadow_grp) {
+ if (sgr_open (O_RDWR) == 0) {
+ fprintf (stderr,
+ _("%s: cannot open %s\n"),
+ Prog, sgr_dbname ());
+ SYSLOG ((LOG_WARN, "cannot open %s", sgr_dbname ()));
+ exit (E_GRP_UPDATE);
+ }
+ }
+#endif /* SHADOWGRP */
}
/*
- * process_flags - perform command line argument setting
+ * process_flags - parse the command line options
*
- * process_flags() interprets the command line arguments and sets
- * the values that the user will be created with accordingly. The
- * values are checked for sanity.
+ * It will not return if an error is encountered.
*/
-
-static void
-process_flags(int argc, char **argv)
+static void process_flags (int argc, char **argv)
{
+ /*
+ * Parse the command line options.
+ */
char *cp;
- int arg;
-
- while ((arg = getopt(argc, argv, "og:O:f")) != EOF) {
- switch (arg) {
+ int option_index = 0;
+ int c;
+ static struct option long_options[] = {
+ {"force", no_argument, NULL, 'f'},
+ {"gid", required_argument, NULL, 'g'},
+ {"help", no_argument, NULL, 'h'},
+ {"key", required_argument, NULL, 'K'},
+ {"non-unique", no_argument, NULL, 'o'},
+ {"password", required_argument, NULL, 'p'},
+ {"system", no_argument, NULL, 'r'},
+ {NULL, 0, NULL, '\0'}
+ };
+
+ while ((c =
+ getopt_long (argc, argv, "fg:hK:op:r", long_options,
+ &option_index)) != -1) {
+ switch (c) {
+ case 'f':
+ /*
+ * "force" - do nothing, just exit(0), if the
+ * specified group already exists. With -g, if
+ * specified gid already exists, choose another
+ * (unique) gid (turn off -g). Based on the RedHat's
+ * patch from shadow-utils-970616-9.
+ */
+ fflg = true;
+ break;
case 'g':
- gflg++;
- if (! isdigit (optarg[0]))
- usage ();
-
- group_id = strtol(optarg, &cp, 10);
- if (*cp != '\0') {
- fprintf(stderr, _("%s: invalid group %s\n"),
- Prog, optarg);
- fail_exit(E_BAD_ARG);
+ gflg = true;
+ if ( (get_gid (optarg, &group_id) == 0)
+ || (group_id == (gid_t)-1)) {
+ fprintf (stderr,
+ _("%s: invalid group ID '%s'\n"),
+ Prog, optarg);
+ exit (E_BAD_ARG);
}
break;
- case 'o':
- oflg++;
+ case 'h':
+ usage (E_SUCCESS);
break;
- case 'O':
+ case 'K':
/*
- * override login.defs defaults (-O name=value)
- * example: -O GID_MIN=100 -O GID_MAX=499
- * note: -O GID_MIN=10,GID_MAX=499 doesn't work yet
+ * override login.defs defaults (-K name=value)
+ * example: -K GID_MIN=100 -K GID_MAX=499
+ * note: -K GID_MIN=10,GID_MAX=499 doesn't work yet
*/
- cp = strchr(optarg, '=');
- if (!cp) {
- fprintf(stderr,
- _("%s: -O requires NAME=VALUE\n"),
- Prog);
- exit(E_BAD_ARG);
+ cp = strchr (optarg, '=');
+ if (NULL == cp) {
+ fprintf (stderr,
+ _("%s: -K requires KEY=VALUE\n"),
+ Prog);
+ exit (E_BAD_ARG);
}
/* terminate name, point to value */
*cp++ = '\0';
- if (putdef_str(optarg, cp) < 0)
- exit(E_BAD_ARG);
+ if (putdef_str (optarg, cp) < 0) {
+ exit (E_BAD_ARG);
+ }
break;
- case 'f':
- /*
- * "force" - do nothing, just exit(0), if the
- * specified group already exists. With -g, if
- * specified gid already exists, choose another
- * (unique) gid (turn off -g). Based on the
- * RedHat's patch from shadow-utils-970616-9.
- */
- fflg++;
+ case 'o':
+ oflg = true;
+ break;
+ case 'p':
+ pflg = true;
+ group_passwd = optarg;
+ break;
+ case 'r':
+ rflg = true;
break;
default:
- usage();
+ usage (E_USAGE);
}
}
- if (oflg && !gflg)
- usage();
-
- if (optind != argc - 1)
- usage();
+ /*
+ * Check the flags consistency
+ */
+ if (optind != argc - 1) {
+ usage (E_USAGE);
+ }
+ group_name = argv[optind];
- group_name = argv[argc - 1];
- check_new_name();
+ check_flags ();
}
/*
- * close_files - close all of the files that were opened
+ * check_flags - check flags and parameters consistency
*
- * close_files() closes all of the files that were opened for this
- * new group. This causes any modified entries to be written out.
+ * It will not return if an error is encountered.
*/
-
-static void
-close_files(void)
+static void check_flags (void)
{
- if (!gr_close()) {
- fprintf(stderr, _("%s: cannot rewrite group file\n"), Prog);
- fail_exit(E_GRP_UPDATE);
+ /* -o does not make sense without -g */
+ if (oflg && !gflg) {
+ usage (E_USAGE);
}
- gr_unlock();
-#ifdef SHADOWGRP
- if (is_shadow_grp && !sgr_close()) {
- fprintf(stderr, _("%s: cannot rewrite shadow group file\n"),
- Prog);
- fail_exit(E_GRP_UPDATE);
+
+ check_new_name ();
+
+ /*
+ * Check if the group already exist.
+ */
+ /* local, no need for xgetgrnam */
+ if (getgrnam (group_name) != NULL) {
+ /* The group already exist */
+ if (fflg) {
+ /* OK, no need to do anything */
+ exit (E_SUCCESS);
+ }
+ fprintf (stderr,
+ _("%s: group '%s' already exists\n"),
+ Prog, group_name);
+ exit (E_NAME_IN_USE);
+ }
+
+ if (gflg && (getgrgid (group_id) != NULL)) {
+ /* A GID was specified, and a group already exist with that GID
+ * - either we will use this GID anyway (-o)
+ * - either we ignore the specified GID and
+ * we will use another one (-f)
+ * - either it is a failure
+ */
+ if (oflg) {
+ /* Continue with this GID */
+ } else if (fflg) {
+ /* Turn off -g, we can use any GID */
+ gflg = false;
+ } else {
+ fprintf (stderr,
+ _("%s: GID '%lu' already exists\n"),
+ Prog, (unsigned long int) group_id);
+ exit (E_GID_IN_USE);
+ }
}
- if (is_shadow_grp)
- sgr_unlock ();
-#endif /* SHADOWGRP */
}
/*
- * open_files - lock and open the group files
+ * check_perms - check if the caller is allowed to add a group
*
- * open_files() opens the two group files.
+ * With PAM support, the setuid bit can be set on groupadd to allow
+ * non-root users to groups.
+ * Without PAM support, only users who can write in the group databases
+ * can add groups.
+ *
+ * It will not return if the user is not allowed.
*/
-
-static void
-open_files(void)
+static void check_perms (void)
{
- if (! gr_lock ()) {
- fprintf(stderr, _("%s: unable to lock group file\n"), Prog);
- exit(E_GRP_UPDATE);
- }
- if (! gr_open (O_RDWR)) {
- fprintf(stderr, _("%s: unable to open group file\n"), Prog);
- fail_exit(E_GRP_UPDATE);
- }
-#ifdef SHADOWGRP
- if (is_shadow_grp && ! sgr_lock ()) {
- fprintf(stderr, _("%s: unable to lock shadow group file\n"),
- Prog);
- fail_exit(E_GRP_UPDATE);
+#ifdef ACCT_TOOLS_SETUID
+#ifdef USE_PAM
+ pam_handle_t *pamh = NULL;
+ int retval;
+ struct passwd *pampw;
+
+ pampw = getpwuid (getuid ()); /* local, no need for xgetpwuid */
+ if (NULL == pampw) {
+ fprintf (stderr,
+ _("%s: Cannot determine your user name.\n"),
+ Prog);
+ exit (1);
}
- if (is_shadow_grp && ! sgr_open (O_RDWR)) {
- fprintf(stderr, _("%s: unable to open shadow group file\n"),
- Prog);
- fail_exit(E_GRP_UPDATE);
+
+ retval = pam_start ("groupadd", pampw->pw_name, &conv, &pamh);
+
+ if (PAM_SUCCESS == retval) {
+ retval = pam_authenticate (pamh, 0);
}
-#endif /* SHADOWGRP */
-}
-/*
- * fail_exit - exit with an error code after unlocking files
- */
+ if (PAM_SUCCESS == retval) {
+ retval = pam_acct_mgmt (pamh, 0);
+ }
-static void
-fail_exit(int code)
-{
- (void) gr_unlock ();
-#ifdef SHADOWGRP
- if (is_shadow_grp)
- sgr_unlock ();
-#endif
- exit (code);
+ if (NULL != pamh) {
+ (void) pam_end (pamh, retval);
+ }
+ if (PAM_SUCCESS != retval) {
+ fprintf (stderr, _("%s: PAM authentication failed\n"), Prog);
+ exit (1);
+ }
+#endif /* USE_PAM */
+#endif /* ACCT_TOOLS_SETUID */
}
/*
* main - groupadd command
*/
-
-int
-main(int argc, char **argv)
+int main (int argc, char **argv)
{
+#ifdef WITH_AUDIT
+ audit_help_open ();
+#endif
+ atexit (do_cleanups);
/*
* Get my name so that I can use it to report errors.
*/
+ Prog = Basename (argv[0]);
- Prog = Basename(argv[0]);
-
- setlocale(LC_ALL, "");
- bindtextdomain(PACKAGE, LOCALEDIR);
- textdomain(PACKAGE);
+ (void) setlocale (LC_ALL, "");
+ (void) bindtextdomain (PACKAGE, LOCALEDIR);
+ (void) textdomain (PACKAGE);
- openlog(Prog, LOG_PID|LOG_CONS|LOG_NOWAIT, LOG_AUTH);
-
-#ifdef SHADOWGRP
- is_shadow_grp = sgr_file_present();
-#endif
+ OPENLOG ("groupadd");
/*
- * The open routines for the DBM files don't use read-write
- * as the mode, so we have to clue them in.
+ * Parse the command line options.
*/
+ process_flags (argc, argv);
-#ifdef NDBM
- gr_dbm_mode = O_RDWR;
-#ifdef SHADOWGRP
- sg_dbm_mode = O_RDWR;
-#endif /* SHADOWGRP */
-#endif /* NDBM */
- process_flags(argc, argv);
-
- /*
- * Start with a quick check to see if the group exists.
- */
+ check_perms ();
- if (getgrnam(group_name)) {
- if (fflg) {
- exit(E_SUCCESS);
- }
- fprintf(stderr, _("%s: group %s exists\n"), Prog, group_name);
- exit(E_NAME_IN_USE);
- }
+#ifdef SHADOWGRP
+ is_shadow_grp = sgr_file_present ();
+#endif
/*
* Do the hard stuff - open the files, create the group entries,
* then close and update the files.
*/
+ open_files ();
- open_files();
+ if (!gflg) {
+ if (find_new_gid (rflg, &group_id, NULL) < 0) {
+ exit (E_GID_IN_USE);
+ }
+ }
- if (!gflg || !oflg)
- find_new_gid();
+ grp_update ();
+ close_files ();
- grp_update();
+ nscd_flush_cache ("group");
- close_files();
- exit(E_SUCCESS);
- /*NOTREACHED*/
+ exit (E_SUCCESS);
+ /*@notreached@*/
}
+
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