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-rw-r--r--src/grpconv.c286
1 files changed, 286 insertions, 0 deletions
diff --git a/src/grpconv.c b/src/grpconv.c
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+++ b/src/grpconv.c
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+/*
+ * Copyright (c) 1996 - 2000, Marek Michałkiewicz
+ * Copyright (c) 2002 - 2006, Tomasz Kłoczko
+ * Copyright (c) 2011 , Nicolas François
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 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. 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 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.
+ */
+
+/*
+ * grpconv - create or update /etc/gshadow with information from
+ * /etc/group.
+ *
+ */
+
+#include <config.h>
+#ident "$Id$"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <grp.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+#include <getopt.h>
+#include "nscd.h"
+#include "prototypes.h"
+/*@-exitarg@*/
+#include "exitcodes.h"
+#ifdef SHADOWGRP
+#include "groupio.h"
+#include "sgroupio.h"
+/*
+ * Global variables
+ */
+const char *Prog;
+
+static bool gr_locked = false;
+static bool sgr_locked = false;
+
+/* local function prototypes */
+static void fail_exit (int status);
+static void usage (int status);
+static void process_flags (int argc, char **argv);
+
+static void fail_exit (int status)
+{
+ 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 (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 */
+ }
+ }
+
+ exit (status);
+}
+
+static void usage (int status)
+{
+ FILE *usageout = (E_SUCCESS != status) ? stderr : stdout;
+ (void) fprintf (usageout,
+ _("Usage: %s [options]\n"
+ "\n"
+ "Options:\n"),
+ Prog);
+ (void) fputs (_(" -h, --help display this help message and exit\n"), usageout);
+ (void) fputs (_(" -R, --root CHROOT_DIR directory to chroot into\n"), usageout);
+ (void) fputs ("\n", usageout);
+ exit (status);
+}
+
+/*
+ * process_flags - parse the command line options
+ *
+ * It will not return if an error is encountered.
+ */
+static void process_flags (int argc, char **argv)
+{
+ /*
+ * Parse the command line options.
+ */
+ int c;
+ static struct option long_options[] = {
+ {"help", no_argument, NULL, 'h'},
+ {"root", required_argument, NULL, 'R'},
+ {NULL, 0, NULL, '\0'}
+ };
+
+ while ((c = getopt_long (argc, argv, "hR:",
+ long_options, NULL)) != -1) {
+ switch (c) {
+ case 'h':
+ usage (E_SUCCESS);
+ /*@notreached@*/break;
+ case 'R': /* no-op, handled in process_root_flag () */
+ break;
+ default:
+ usage (E_USAGE);
+ }
+ }
+
+ if (optind != argc) {
+ usage (E_USAGE);
+ }
+}
+
+int main (int argc, char **argv)
+{
+ const struct group *gr;
+ struct group grent;
+ const struct sgrp *sg;
+ struct sgrp sgent;
+
+ Prog = Basename (argv[0]);
+
+ (void) setlocale (LC_ALL, "");
+ (void) bindtextdomain (PACKAGE, LOCALEDIR);
+ (void) textdomain (PACKAGE);
+
+ process_root_flag ("-R", argc, argv);
+
+ OPENLOG ("grpconv");
+
+ process_flags (argc, argv);
+
+ if (gr_lock () == 0) {
+ fprintf (stderr,
+ _("%s: cannot lock %s; try again later.\n"),
+ Prog, gr_dbname ());
+ fail_exit (5);
+ }
+ gr_locked = true;
+ if (gr_open (O_CREAT | O_RDWR) == 0) {
+ fprintf (stderr, _("%s: cannot open %s\n"), Prog, gr_dbname ());
+ fail_exit (1);
+ }
+
+ if (sgr_lock () == 0) {
+ fprintf (stderr,
+ _("%s: cannot lock %s; try again later.\n"),
+ Prog, sgr_dbname ());
+ fail_exit (5);
+ }
+ sgr_locked = true;
+ if (sgr_open (O_CREAT | O_RDWR) == 0) {
+ fprintf (stderr, _("%s: cannot open %s\n"), Prog, sgr_dbname ());
+ fail_exit (1);
+ }
+
+ /*
+ * Remove /etc/gshadow entries for groups not in /etc/group.
+ */
+ (void) sgr_rewind ();
+ while ((sg = sgr_next ()) != NULL) {
+ if (gr_locate (sg->sg_name) != NULL) {
+ continue;
+ }
+
+ if (sgr_remove (sg->sg_name) == 0) {
+ /*
+ * This shouldn't happen (the entry exists) but...
+ */
+ fprintf (stderr,
+ _("%s: cannot remove entry '%s' from %s\n"),
+ Prog, sg->sg_name, sgr_dbname ());
+ fail_exit (3);
+ }
+ }
+
+ /*
+ * Update shadow group passwords if non-shadow password is not "x".
+ * Add any missing shadow group entries.
+ */
+ (void) gr_rewind ();
+ while ((gr = gr_next ()) != NULL) {
+ sg = sgr_locate (gr->gr_name);
+ if (NULL != sg) {
+ /* update existing shadow group entry */
+ sgent = *sg;
+ if (strcmp (gr->gr_passwd, SHADOW_PASSWD_STRING) != 0)
+ sgent.sg_passwd = gr->gr_passwd;
+ } else {
+ static char *empty = 0;
+
+ /* add new shadow group entry */
+ memset (&sgent, 0, sizeof sgent);
+ sgent.sg_name = gr->gr_name;
+ sgent.sg_passwd = gr->gr_passwd;
+ sgent.sg_adm = &empty;
+ }
+ /*
+ * XXX - sg_mem is redundant, it is currently always a copy
+ * of gr_mem. Very few programs actually use sg_mem, and all
+ * of them are in the shadow suite. Maybe this field could
+ * be used for something else? Any suggestions?
+ */
+ sgent.sg_mem = gr->gr_mem;
+
+ if (sgr_update (&sgent) == 0) {
+ fprintf (stderr,
+ _("%s: failed to prepare the new %s entry '%s'\n"),
+ Prog, sgr_dbname (), sgent.sg_name);
+ fail_exit (3);
+ }
+ /* remove password from /etc/group */
+ grent = *gr;
+ grent.gr_passwd = SHADOW_PASSWD_STRING; /* XXX warning: const */
+ if (gr_update (&grent) == 0) {
+ fprintf (stderr,
+ _("%s: failed to prepare the new %s entry '%s'\n"),
+ Prog, gr_dbname (), grent.gr_name);
+ fail_exit (3);
+ }
+ }
+
+ if (sgr_close () == 0) {
+ fprintf (stderr,
+ _("%s: failure while writing changes to %s\n"),
+ Prog, sgr_dbname ());
+ SYSLOG ((LOG_ERR, "failure while writing changes to %s", sgr_dbname ()));
+ fail_exit (3);
+ }
+ if (gr_close () == 0) {
+ fprintf (stderr,
+ _("%s: failure while writing changes to %s\n"),
+ Prog, gr_dbname ());
+ SYSLOG ((LOG_ERR, "failure while writing changes to %s", gr_dbname ()));
+ fail_exit (3);
+ }
+ 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 */
+ }
+ 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 */
+ }
+
+ nscd_flush_cache ("group");
+
+ return 0;
+}
+#else /* !SHADOWGRP */
+int main (int unused(argc), char **argv)
+{
+ fprintf (stderr,
+ "%s: not configured for shadow group support.\n", argv[0]);
+ exit (1);
+}
+#endif /* !SHADOWGRP */
+
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