summaryrefslogtreecommitdiffstats
path: root/src/groupmod.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/groupmod.c')
-rw-r--r--src/groupmod.c905
1 files changed, 905 insertions, 0 deletions
diff --git a/src/groupmod.c b/src/groupmod.c
new file mode 100644
index 0000000..006eca1
--- /dev/null
+++ b/src/groupmod.c
@@ -0,0 +1,905 @@
+/*
+ * SPDX-FileCopyrightText: 1991 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2000 - 2006, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2007 - 2011, Nicolas François
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include <ctype.h>
+#include <fcntl.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 "groupio.h"
+#include "pwio.h"
+#include "nscd.h"
+#include "sssd.h"
+#include "prototypes.h"
+#ifdef SHADOWGRP
+#include "sgroupio.h"
+#endif
+#include "shadowlog.h"
+/*
+ * 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 already in use (and no -o) */
+#define E_NOTFOUND 6 /* specified group doesn't exist */
+#define E_NAME_IN_USE 9 /* group name already in use */
+#define E_GRP_UPDATE 10 /* can't update group file */
+#define E_CLEANUP_SERVICE 11 /* can't setup cleanup service */
+#define E_PAM_USERNAME 12 /* can't determine your username for use with pam */
+#define E_PAM_ERROR 13 /* pam returned an error, see Syslog facility id groupmod */
+
+
+/*
+ * Global variables
+ */
+const char *Prog;
+
+#ifdef SHADOWGRP
+static bool is_shadow_grp;
+#endif /* SHADOWGRP */
+static char *group_name;
+static char *group_newname;
+static char *group_passwd;
+static gid_t group_id;
+static gid_t group_newid;
+
+static const char* prefix = "";
+static char *user_list;
+
+static struct cleanup_info_mod info_passwd;
+static struct cleanup_info_mod info_group;
+#ifdef SHADOWGRP
+static struct cleanup_info_mod info_gshadow;
+#endif
+
+static bool
+ aflg = false, /* append -U members rather than replace them */
+ oflg = false, /* permit non-unique group ID to be specified with -g */
+ gflg = false, /* new ID value for the group */
+ nflg = false, /* a new name has been specified for the group */
+ pflg = false; /* new encrypted password */
+
+/* local function prototypes */
+static void usage (int status);
+static void new_grent (struct group *);
+
+#ifdef SHADOWGRP
+static void new_sgent (struct sgrp *);
+#endif
+static void grp_update (void);
+static void check_new_gid (void);
+static void check_new_name (void);
+static void process_flags (int, char **);
+static void lock_files (void);
+static void prepare_failure_reports (void);
+static void open_files (void);
+static void close_files (void);
+static void update_primary_groups (gid_t ogid, gid_t ngid);
+
+
+/*
+ * usage - display usage message and exit
+ */
+
+static void usage (int status)
+{
+ FILE *usageout = (E_SUCCESS != status) ? stderr : stdout;
+ (void) fprintf (usageout,
+ _("Usage: %s [options] GROUP\n"
+ "\n"
+ "Options:\n"),
+ Prog);
+ (void) fputs (_(" -a, --append append the users mentioned by -U option to the group \n"
+ " without removing existing user members\n"), usageout);
+ (void) fputs (_(" -g, --gid GID change the group ID to GID\n"), usageout);
+ (void) fputs (_(" -h, --help display this help message and exit\n"), usageout);
+ (void) fputs (_(" -n, --new-name NEW_GROUP change the name to NEW_GROUP\n"), usageout);
+ (void) fputs (_(" -o, --non-unique allow to use a duplicate (non-unique) GID\n"), usageout);
+ (void) fputs (_(" -p, --password PASSWORD change the password to this (encrypted)\n"
+ " PASSWORD\n"), usageout);
+ (void) fputs (_(" -R, --root CHROOT_DIR directory to chroot into\n"), usageout);
+ (void) fputs (_(" -P, --prefix PREFIX_DIR prefix directory where are located the /etc/* files\n"), usageout);
+ (void) fputs (_(" -U, --users USERS list of user members of this group\n"), usageout);
+ (void) fputs ("\n", usageout);
+ exit (status);
+}
+
+/*
+ * new_grent - updates 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.
+ */
+static void new_grent (struct group *grent)
+{
+ if (nflg) {
+ grent->gr_name = xstrdup (group_newname);
+ }
+
+ if (gflg) {
+ grent->gr_gid = group_newid;
+ }
+
+ if ( pflg
+#ifdef SHADOWGRP
+ && ( (!is_shadow_grp)
+ || (strcmp (grent->gr_passwd, SHADOW_PASSWD_STRING) != 0))
+#endif
+ ) {
+ /* Update the password in group if there is no gshadow
+ * file or if the password is currently in group
+ * (gr_passwd != "x"). We do not force the usage of
+ * shadow passwords if it was not the case before.
+ */
+ grent->gr_passwd = group_passwd;
+ }
+}
+
+#ifdef SHADOWGRP
+/*
+ * new_sgent - updates 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.
+ */
+static void new_sgent (struct sgrp *sgent)
+{
+ if (nflg) {
+ sgent->sg_name = xstrdup (group_newname);
+ }
+
+ /* Always update the shadowed password if there is a shadow entry
+ * (even if shadowed passwords might not be enabled for this group
+ * (gr_passwd != "x")).
+ * It seems better to update the password in both places in case a
+ * shadow and a non shadow entry exist.
+ * This might occur only if there were already both entries.
+ */
+ if (pflg) {
+ sgent->sg_passwd = group_passwd;
+ }
+}
+#endif /* SHADOWGRP */
+
+/*
+ * grp_update - update group file entries
+ *
+ * grp_update() updates the new records in the memory databases.
+ */
+static void grp_update (void)
+{
+ struct group grp;
+ const struct group *ogrp;
+
+#ifdef SHADOWGRP
+ struct sgrp sgrp;
+ const struct sgrp *osgrp = NULL;
+#endif /* SHADOWGRP */
+
+ /*
+ * Get the current settings for this group.
+ */
+ ogrp = gr_locate (group_name);
+ if (NULL == ogrp) {
+ fprintf (stderr,
+ _("%s: group '%s' does not exist in %s\n"),
+ Prog, group_name, gr_dbname ());
+ exit (E_GRP_UPDATE);
+ }
+ grp = *ogrp;
+ new_grent (&grp);
+#ifdef SHADOWGRP
+ if ( is_shadow_grp
+ && (pflg || nflg)) {
+ osgrp = sgr_locate (group_name);
+ if (NULL != osgrp) {
+ sgrp = *osgrp;
+ new_sgent (&sgrp);
+ } else if ( pflg
+ && (strcmp (grp.gr_passwd, SHADOW_PASSWD_STRING) == 0)) {
+ static char *empty = NULL;
+ /* If there is a gshadow file with no entries for
+ * the group, but the group file indicates a
+ * shadowed password, we force the creation of a
+ * gshadow entry when a new password is requested.
+ */
+ memset (&sgrp, 0, sizeof sgrp);
+ sgrp.sg_name = xstrdup (grp.gr_name);
+ sgrp.sg_passwd = xstrdup (grp.gr_passwd);
+ sgrp.sg_adm = &empty;
+ sgrp.sg_mem = dup_list (grp.gr_mem);
+ new_sgent (&sgrp);
+ osgrp = &sgrp; /* entry needs to be committed */
+ }
+ }
+#endif /* SHADOWGRP */
+
+ if (gflg) {
+ update_primary_groups (ogrp->gr_gid, group_newid);
+ }
+
+ if (user_list) {
+ char *token;
+
+ if (!aflg) {
+ // requested to replace the existing groups
+ if (NULL != grp.gr_mem[0])
+ gr_free_members(&grp);
+ grp.gr_mem = (char **)xmalloc(sizeof(char *));
+ grp.gr_mem[0] = (char *)0;
+ } else {
+ // append to existing groups
+ if (NULL != grp.gr_mem[0])
+ grp.gr_mem = dup_list (grp.gr_mem);
+ }
+
+ token = strtok(user_list, ",");
+ while (token) {
+ if (prefix_getpwnam (token) == NULL) {
+ fprintf (stderr, _("Invalid member username %s\n"), token);
+ exit (E_GRP_UPDATE);
+ }
+ grp.gr_mem = add_list(grp.gr_mem, token);
+ token = strtok(NULL, ",");
+ }
+ }
+
+ /*
+ * Write out the new group file entry.
+ */
+ 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);
+ }
+ if (nflg && (gr_remove (group_name) == 0)) {
+ fprintf (stderr,
+ _("%s: cannot remove entry '%s' from %s\n"),
+ Prog, grp.gr_name, gr_dbname ());
+ exit (E_GRP_UPDATE);
+ }
+
+#ifdef SHADOWGRP
+ /*
+ * Make sure there was a shadow entry to begin with.
+ */
+ if (NULL != osgrp) {
+ /*
+ * Write out the new shadow group entries as well.
+ */
+ if (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);
+ }
+ if (nflg && (sgr_remove (group_name) == 0)) {
+ fprintf (stderr,
+ _("%s: cannot remove entry '%s' from %s\n"),
+ Prog, group_name, sgr_dbname ());
+ exit (E_GRP_UPDATE);
+ }
+ }
+#endif /* SHADOWGRP */
+}
+
+/*
+ * check_new_gid - check the new GID value for uniqueness
+ *
+ * check_new_gid() insures that the new GID value is unique.
+ */
+static void check_new_gid (void)
+{
+ /*
+ * First, the easy stuff. If the ID can be duplicated, or if the ID
+ * didn't really change, just return. If the ID didn't change, turn
+ * off those flags. No sense doing needless work.
+ */
+ if (group_id == group_newid) {
+ gflg = 0;
+ return;
+ }
+
+ if (oflg ||
+ (getgrgid (group_newid) == NULL) /* local, no need for xgetgrgid */
+ ) {
+ return;
+ }
+
+ /*
+ * Tell the user what they did wrong.
+ */
+ fprintf (stderr,
+ _("%s: GID '%lu' already exists\n"),
+ Prog, (unsigned long int) group_newid);
+ exit (E_GID_IN_USE);
+}
+
+/*
+ * check_new_name - check the new name for uniqueness
+ *
+ * check_new_name() insures that the new name does not exist already.
+ * You can't have the same name twice, period.
+ */
+static void check_new_name (void)
+{
+ /*
+ * Make sure they are actually changing the name.
+ */
+ if (strcmp (group_name, group_newname) == 0) {
+ nflg = 0;
+ return;
+ }
+
+ if (is_valid_group_name (group_newname)) {
+
+ /*
+ * If the entry is found, too bad.
+ */
+ /* local, no need for xgetgrnam */
+ if (prefix_getgrnam (group_newname) != NULL) {
+ fprintf (stderr,
+ _("%s: group '%s' already exists\n"),
+ Prog, group_newname);
+ exit (E_NAME_IN_USE);
+ }
+ return;
+ }
+
+ /*
+ * All invalid group names land here.
+ */
+
+ fprintf (stderr,
+ _("%s: invalid group name '%s'\n"),
+ Prog, group_newname);
+ exit (E_BAD_ARG);
+}
+
+/*
+ * process_flags - perform command line argument setting
+ *
+ * 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.
+ */
+static void process_flags (int argc, char **argv)
+{
+ int c;
+ static struct option long_options[] = {
+ {"append", no_argument, NULL, 'a'},
+ {"gid", required_argument, NULL, 'g'},
+ {"help", no_argument, NULL, 'h'},
+ {"new-name", required_argument, NULL, 'n'},
+ {"non-unique", no_argument, NULL, 'o'},
+ {"password", required_argument, NULL, 'p'},
+ {"root", required_argument, NULL, 'R'},
+ {"prefix", required_argument, NULL, 'P'},
+ {"users", required_argument, NULL, 'U'},
+ {NULL, 0, NULL, '\0'}
+ };
+ while ((c = getopt_long (argc, argv, "ag:hn:op:R:P:U:",
+ long_options, NULL)) != -1) {
+ switch (c) {
+ case 'a':
+ aflg = true;
+ break;
+ case 'g':
+ gflg = true;
+ if ( (get_gid (optarg, &group_newid) == 0)
+ || (group_newid == (gid_t)-1)) {
+ fprintf (stderr,
+ _("%s: invalid group ID '%s'\n"),
+ Prog, optarg);
+ exit (E_BAD_ARG);
+ }
+ break;
+ case 'h':
+ usage (E_SUCCESS);
+ break;
+ case 'n':
+ nflg = true;
+ group_newname = optarg;
+ break;
+ case 'o':
+ oflg = true;
+ break;
+ case 'p':
+ group_passwd = optarg;
+ pflg = true;
+ break;
+ case 'R': /* no-op, handled in process_root_flag () */
+ break;
+ case 'P': /* no-op, handled in process_prefix_flag () */
+ break;
+ case 'U':
+ user_list = optarg;
+ break;
+ default:
+ usage (E_USAGE);
+ }
+ }
+
+ if (oflg && !gflg) {
+ usage (E_USAGE);
+ }
+
+ if (optind != (argc - 1)) {
+ usage (E_USAGE);
+ }
+
+ group_name = argv[argc - 1];
+}
+
+/*
+ * 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)
+{
+ 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_USER_ACCT, Prog,
+ info_group.audit_msg,
+ group_name, AUDIT_NO_ID,
+ SHADOW_AUDIT_SUCCESS);
+#endif
+ SYSLOG ((LOG_INFO,
+ "group changed in %s (%s)",
+ gr_dbname (), info_group.action));
+ del_cleanup (cleanup_report_mod_group);
+
+ cleanup_unlock_group (NULL);
+ del_cleanup (cleanup_unlock_group);
+
+#ifdef SHADOWGRP
+ if ( is_shadow_grp
+ && (pflg || nflg)) {
+ if (sgr_close () == 0) {
+ fprintf (stderr,
+ _("%s: failure while writing changes to %s\n"),
+ Prog, sgr_dbname ());
+ exit (E_GRP_UPDATE);
+ }
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_ACCT, Prog,
+ info_gshadow.audit_msg,
+ group_name, AUDIT_NO_ID,
+ SHADOW_AUDIT_SUCCESS);
+#endif
+ SYSLOG ((LOG_INFO,
+ "group changed in %s (%s)",
+ sgr_dbname (), info_gshadow.action));
+ del_cleanup (cleanup_report_mod_gshadow);
+
+ cleanup_unlock_gshadow (NULL);
+ del_cleanup (cleanup_unlock_gshadow);
+ }
+#endif /* SHADOWGRP */
+
+ if (gflg) {
+ if (pw_close () == 0) {
+ fprintf (stderr,
+ _("%s: failure while writing changes to %s\n"),
+ Prog, pw_dbname ());
+ exit (E_GRP_UPDATE);
+ }
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_ACCT, Prog,
+ info_passwd.audit_msg,
+ group_name, AUDIT_NO_ID,
+ SHADOW_AUDIT_SUCCESS);
+#endif
+ SYSLOG ((LOG_INFO,
+ "group changed in %s (%s)",
+ pw_dbname (), info_passwd.action));
+ del_cleanup (cleanup_report_mod_passwd);
+
+ cleanup_unlock_passwd (NULL);
+ del_cleanup (cleanup_unlock_passwd);
+ }
+
+#ifdef WITH_AUDIT
+ audit_logger (AUDIT_USER_ACCT, Prog,
+ "modifying group",
+ group_name, AUDIT_NO_ID,
+ SHADOW_AUDIT_SUCCESS);
+#endif
+}
+
+/*
+ * prepare_failure_reports - Prepare the cleanup_info structure for logging
+ * of success and failure to syslog or audit.
+ */
+static void prepare_failure_reports (void)
+{
+ info_group.name = group_name;
+#ifdef SHADOWGRP
+ info_gshadow.name = group_name;
+#endif
+ info_passwd.name = group_name;
+
+ info_group.audit_msg = xmalloc (512);
+#ifdef SHADOWGRP
+ info_gshadow.audit_msg = xmalloc (512);
+#endif
+ info_passwd.audit_msg = xmalloc (512);
+
+ (void) snprintf (info_group.audit_msg, 511,
+ "changing %s; ", gr_dbname ());
+#ifdef SHADOWGRP
+ (void) snprintf (info_gshadow.audit_msg, 511,
+ "changing %s; ", sgr_dbname ());
+#endif
+ (void) snprintf (info_passwd.audit_msg, 511,
+ "changing %s; ", pw_dbname ());
+
+ info_group.action = info_group.audit_msg
+ + strlen (info_group.audit_msg);
+#ifdef SHADOWGRP
+ info_gshadow.action = info_gshadow.audit_msg
+ + strlen (info_gshadow.audit_msg);
+#endif
+ info_passwd.action = info_passwd.audit_msg
+ + strlen (info_passwd.audit_msg);
+
+ (void) snprintf (info_group.action,
+ 511 - strlen (info_group.audit_msg),
+ "group %s/%lu",
+ group_name, (unsigned long int) group_id);
+#ifdef SHADOWGRP
+ (void) snprintf (info_gshadow.action,
+ 511 - strlen (info_group.audit_msg),
+ "group %s", group_name);
+#endif
+ (void) snprintf (info_passwd.action,
+ 511 - strlen (info_group.audit_msg),
+ "group %s/%lu",
+ group_name, (unsigned long int) group_id);
+
+ if (nflg) {
+ strncat (info_group.action, ", new name: ",
+ 511 - strlen (info_group.audit_msg));
+ strncat (info_group.action, group_newname,
+ 511 - strlen (info_group.audit_msg));
+
+#ifdef SHADOWGRP
+ strncat (info_gshadow.action, ", new name: ",
+ 511 - strlen (info_gshadow.audit_msg));
+ strncat (info_gshadow.action, group_newname,
+ 511 - strlen (info_gshadow.audit_msg));
+#endif
+
+ strncat (info_passwd.action, ", new name: ",
+ 511 - strlen (info_passwd.audit_msg));
+ strncat (info_passwd.action, group_newname,
+ 511 - strlen (info_passwd.audit_msg));
+ }
+ if (pflg) {
+ strncat (info_group.action, ", new password",
+ 511 - strlen (info_group.audit_msg));
+
+#ifdef SHADOWGRP
+ strncat (info_gshadow.action, ", new password",
+ 511 - strlen (info_gshadow.audit_msg));
+#endif
+ }
+ if (gflg) {
+ strncat (info_group.action, ", new gid: ",
+ 511 - strlen (info_group.audit_msg));
+ (void) snprintf (info_group.action+strlen (info_group.action),
+ 511 - strlen (info_group.audit_msg),
+ "%lu", (unsigned long int) group_newid);
+
+ strncat (info_passwd.action, ", new gid: ",
+ 511 - strlen (info_passwd.audit_msg));
+ (void) snprintf (info_passwd.action+strlen (info_passwd.action),
+ 511 - strlen (info_passwd.audit_msg),
+ "%lu", (unsigned long int) group_newid);
+ }
+ info_group.audit_msg[511] = '\0';
+#ifdef SHADOWGRP
+ info_gshadow.audit_msg[511] = '\0';
+#endif
+ info_passwd.audit_msg[511] = '\0';
+
+// FIXME: add a system cleanup
+ add_cleanup (cleanup_report_mod_group, &info_group);
+#ifdef SHADOWGRP
+ if ( is_shadow_grp
+ && (pflg || nflg)) {
+ add_cleanup (cleanup_report_mod_gshadow, &info_gshadow);
+ }
+#endif
+ if (gflg) {
+ add_cleanup (cleanup_report_mod_passwd, &info_passwd);
+ }
+
+}
+
+/*
+ * lock_files - lock the accounts databases
+ *
+ * lock_files() locks the group, gshadow, and passwd databases.
+ */
+static void lock_files (void)
+{
+ 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
+ && (pflg || nflg)) {
+ 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
+
+ if (gflg) {
+ if (pw_lock () == 0) {
+ fprintf (stderr,
+ _("%s: cannot lock %s; try again later.\n"),
+ Prog, pw_dbname ());
+ exit (E_GRP_UPDATE);
+ }
+ add_cleanup (cleanup_unlock_passwd, NULL);
+ }
+}
+
+
+/*
+ * open_files - open the accounts databases
+ *
+ * open_files() opens the group, gshadow, and passwd databases.
+ */
+static void open_files (void)
+{
+ if (gr_open (O_CREAT | 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);
+ }
+
+#ifdef SHADOWGRP
+ if ( is_shadow_grp
+ && (pflg || nflg)) {
+ if (sgr_open (O_CREAT | 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 */
+
+ if (gflg) {
+ if (pw_open (O_CREAT | O_RDWR) == 0) {
+ fprintf (stderr,
+ _("%s: cannot open %s\n"),
+ Prog, pw_dbname ());
+ SYSLOG ((LOG_WARN, "cannot open %s", gr_dbname ()));
+ exit (E_GRP_UPDATE);
+ }
+ }
+}
+
+void update_primary_groups (gid_t ogid, gid_t ngid)
+{
+ struct passwd *pwd;
+
+ prefix_setpwent ();
+ while ((pwd = prefix_getpwent ()) != NULL) {
+ if (pwd->pw_gid == ogid) {
+ const struct passwd *lpwd;
+ struct passwd npwd;
+ lpwd = pw_locate (pwd->pw_name);
+ if (NULL == lpwd) {
+ fprintf (stderr,
+ _("%s: user '%s' does not exist in %s\n"),
+ Prog, pwd->pw_name, pw_dbname ());
+ exit (E_GRP_UPDATE);
+ } else {
+ npwd = *lpwd;
+ npwd.pw_gid = ngid;
+ if (pw_update (&npwd) == 0) {
+ fprintf (stderr,
+ _("%s: failed to prepare the new %s entry '%s'\n"),
+ Prog, pw_dbname (), npwd.pw_name);
+ exit (E_GRP_UPDATE);
+ }
+ }
+ }
+ }
+ prefix_endpwent ();
+}
+
+/*
+ * main - groupmod command
+ *
+ */
+int main (int argc, char **argv)
+{
+#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]);
+ log_set_progname(Prog);
+ log_set_logfd(stderr);
+
+ (void) setlocale (LC_ALL, "");
+ (void) bindtextdomain (PACKAGE, LOCALEDIR);
+ (void) textdomain (PACKAGE);
+
+ process_root_flag ("-R", argc, argv);
+ prefix = process_prefix_flag ("-P", argc, argv);
+
+ OPENLOG ("groupmod");
+#ifdef WITH_AUDIT
+ audit_help_open ();
+#endif
+
+ if (atexit (do_cleanups) != 0) {
+ fprintf (stderr,
+ _("%s: Cannot setup cleanup service.\n"),
+ Prog);
+ exit (E_CLEANUP_SERVICE);
+ }
+
+ process_flags (argc, argv);
+
+#ifdef ACCT_TOOLS_SETUID
+#ifdef USE_PAM
+ {
+ 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 (E_PAM_USERNAME);
+ }
+
+ retval = pam_start ("groupmod", 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_PAM_ERROR);
+ }
+ (void) pam_end (pamh, retval);
+#endif /* USE_PAM */
+#endif /* ACCT_TOOLS_SETUID */
+
+#ifdef SHADOWGRP
+ is_shadow_grp = sgr_file_present ();
+#endif
+ {
+ struct group *grp;
+ /*
+ * Start with a quick check to see if the group exists.
+ */
+ grp = prefix_getgrnam (group_name); /* local, no need for xgetgrnam */
+ if (NULL == grp) {
+ fprintf (stderr,
+ _("%s: group '%s' does not exist\n"),
+ Prog, group_name);
+ exit (E_NOTFOUND);
+ } else {
+ group_id = grp->gr_gid;
+ }
+ }
+
+#ifdef USE_NIS
+ /*
+ * Now make sure it isn't an NIS group.
+ */
+ if (__isgrNIS ()) {
+ char *nis_domain;
+ char *nis_master;
+
+ fprintf (stderr,
+ _("%s: group %s is a NIS group\n"),
+ Prog, group_name);
+
+ if (!yp_get_default_domain (&nis_domain) &&
+ !yp_master (nis_domain, "group.byname", &nis_master)) {
+ fprintf (stderr,
+ _("%s: %s is the NIS master\n"),
+ Prog, nis_master);
+ }
+ exit (E_NOTFOUND);
+ }
+#endif
+
+ if (gflg) {
+ check_new_gid ();
+ }
+
+ if (nflg) {
+ check_new_name ();
+ }
+
+ lock_files ();
+
+ /*
+ * Now if the group is not changed, it's our fault.
+ * Make sure failures will be reported.
+ */
+ prepare_failure_reports ();
+
+ /*
+ * Do the hard stuff - open the files, create the group entries,
+ * then close and update the files.
+ */
+ open_files ();
+
+ grp_update ();
+
+ close_files ();
+
+ nscd_flush_cache ("group");
+ sssd_flush_cache (SSSD_DB_GROUP);
+
+ return E_SUCCESS;
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-03 08:12:11 +0000