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-rw-r--r--src/pwunconv.c256
1 files changed, 256 insertions, 0 deletions
diff --git a/src/pwunconv.c b/src/pwunconv.c
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+++ b/src/pwunconv.c
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+/*
+ * Copyright (c) 1989 - 1994, Julianne Frances Haugh
+ * Copyright (c) 1996 - 2000, Marek Michałkiewicz
+ * Copyright (c) 2001 - 2005, Tomasz Kłoczko
+ * Copyright (c) 2008 - 2012, 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.
+ */
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include <fcntl.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <getopt.h>
+#include "defines.h"
+#include "nscd.h"
+#include "prototypes.h"
+#include "pwio.h"
+#include "shadowio.h"
+/*@-exitarg@*/
+#include "exitcodes.h"
+
+/*
+ * Global variables
+ */
+const char *Prog;
+
+static bool spw_locked = false;
+static bool pw_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 (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 */
+ }
+ }
+ 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 */
+ }
+ }
+ 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 passwd *pw;
+ struct passwd pwent;
+ const struct spwd *spwd;
+
+ Prog = Basename (argv[0]);
+
+ (void) setlocale (LC_ALL, "");
+ (void) bindtextdomain (PACKAGE, LOCALEDIR);
+ (void) textdomain (PACKAGE);
+
+ process_root_flag ("-R", argc, argv);
+
+ OPENLOG ("pwunconv");
+
+ process_flags (argc, argv);
+
+#ifdef WITH_TCB
+ if (getdef_bool("USE_TCB")) {
+ fprintf (stderr, _("%s: can't work with tcb enabled\n"), Prog);
+ exit (1);
+ }
+#endif /* WITH_TCB */
+
+ if (!spw_file_present ()) {
+ /* shadow not installed, do nothing */
+ exit (0);
+ }
+
+ if (pw_lock () == 0) {
+ fprintf (stderr,
+ _("%s: cannot lock %s; try again later.\n"),
+ Prog, pw_dbname ());
+ fail_exit (5);
+ }
+ pw_locked = true;
+ if (pw_open (O_CREAT | O_RDWR) == 0) {
+ fprintf (stderr,
+ _("%s: cannot open %s\n"),
+ Prog, pw_dbname ());
+ fail_exit (1);
+ }
+
+ if (spw_lock () == 0) {
+ fprintf (stderr,
+ _("%s: cannot lock %s; try again later.\n"),
+ Prog, spw_dbname ());
+ fail_exit (5);
+ }
+ spw_locked = true;
+ if (spw_open (O_RDONLY) == 0) {
+ fprintf (stderr,
+ _("%s: cannot open %s\n"),
+ Prog, spw_dbname ());
+ fail_exit (1);
+ }
+
+ (void) pw_rewind ();
+ while ((pw = pw_next ()) != NULL) {
+ spwd = spw_locate (pw->pw_name);
+ if (NULL == spwd) {
+ continue;
+ }
+
+ pwent = *pw;
+
+ /*
+ * Update password if non-shadow is "x".
+ */
+ if (strcmp (pw->pw_passwd, SHADOW_PASSWD_STRING) == 0) {
+ pwent.pw_passwd = spwd->sp_pwdp;
+ }
+
+ /*
+ * Password aging works differently in the two different
+ * systems. With shadow password files you apparently must
+ * have some aging information. The maxweeks or minweeks
+ * may not map exactly. In pwconv we set max == 10000,
+ * which is about 30 years. Here we have to undo that
+ * kludge. So, if maxdays == 10000, no aging information is
+ * put into the new file. Otherwise, the days are converted
+ * to weeks and so on.
+ */
+ if (pw_update (&pwent) == 0) {
+ fprintf (stderr,
+ _("%s: failed to prepare the new %s entry '%s'\n"),
+ Prog, pw_dbname (), pwent.pw_name);
+ fail_exit (3);
+ }
+ }
+
+ (void) spw_close (); /* was only open O_RDONLY */
+
+ if (pw_close () == 0) {
+ fprintf (stderr,
+ _("%s: failure while writing changes to %s\n"),
+ Prog, pw_dbname ());
+ SYSLOG ((LOG_ERR, "failure while writing changes to %s", pw_dbname ()));
+ fail_exit (3);
+ }
+
+ if (unlink (SHADOW) != 0) {
+ fprintf (stderr,
+ _("%s: cannot delete %s\n"), Prog, SHADOW);
+ SYSLOG ((LOG_ERR, "cannot delete %s", SHADOW));
+ fail_exit (3);
+ }
+
+ 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 */
+ }
+ 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 */
+ }
+
+ nscd_flush_cache ("passwd");
+
+ return 0;
+}
+
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