/*
- * Copyright 1992 - 1994, Julianne Frances Haugh
+ * Copyright (c) 1992 - 1994, Julianne Frances Haugh
+ * Copyright (c) 1996 - 2000, Marek Michałkiewicz
+ * Copyright (c) 2001 , Michał Moskal
+ * Copyright (c) 2001 - 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: grpck.c,v 1.23 2005/04/06 04:26:06 kloczek Exp $")
-#include <stdio.h>
+#ident "$Id$"
+
#include <fcntl.h>
#include <grp.h>
-#include "prototypes.h"
-#include "defines.h"
-#include "chkname.h"
#include <pwd.h>
+#include <stdio.h>
+#include "chkname.h"
#include "commonio.h"
+#include "defines.h"
#include "groupio.h"
-extern void __gr_del_entry (const struct commonio_entry *);
-extern struct commonio_entry *__gr_get_head (void);
+#include "nscd.h"
+#include "prototypes.h"
#ifdef SHADOWGRP
#include "sgroupio.h"
-extern void __sgr_del_entry (const struct commonio_entry *);
-extern struct commonio_entry *__sgr_get_head (void);
#endif
/*
* Exit codes
*/
-
+/*@-exitarg@*/
#define E_OKAY 0
#define E_USAGE 1
#define E_BAD_ENTRY 2
#define E_CANT_UPDATE 5
/*
- * Local variables
+ * Global variables
*/
+char *Prog;
-static char *Prog;
static const char *grp_file = GROUP_FILE;
+static bool use_system_grp_file = true;
#ifdef SHADOWGRP
static const char *sgr_file = SGROUP_FILE;
+static bool use_system_sgr_file = true;
+static bool is_shadow = false;
+static bool sgr_locked = false;
#endif
-static int read_only = 0;
+static bool gr_locked = false;
+/* Options */
+static bool read_only = false;
+static bool sort_mode = false;
/* local function prototypes */
+static void fail_exit (int status);
static void usage (void);
-static int yes_or_no (void);
static void delete_member (char **, const char *);
+static void process_flags (int argc, char **argv);
+static void open_files (void);
+static void close_files (bool changed);
+static int check_members (const char *groupname,
+ char **members,
+ const char *fmt_info,
+ const char *fmt_prompt,
+ const char *fmt_syslog,
+ int *errors);
+static void check_grp_file (int *errors, bool *changed);
+#ifdef SHADOWGRP
+static void compare_members_lists (const char *groupname,
+ char **members,
+ char **other_members,
+ const char *file,
+ const char *other_file);
+static void check_sgr_file (int *errors, bool *changed);
+#endif
/*
- * usage - print syntax message and exit
+ * fail_exit - exit with an error code after unlocking files
*/
+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 */
+ }
+ }
+#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
+
+ closelog ();
+
+ exit (status);
+}
+
+/*
+ * usage - print syntax message and exit
+ */
static void usage (void)
{
#ifdef SHADOWGRP
exit (E_USAGE);
}
-/*
- * yes_or_no - get answer to question from the user
- */
-
-static int yes_or_no (void)
-{
- char buf[80];
-
- /*
- * In read-only mode all questions are answered "no".
- */
-
- if (read_only) {
- puts (_("No"));
- return 0;
- }
-
- /*
- * Get a line and see what the first character is.
- */
-
- if (fgets (buf, sizeof buf, stdin))
- return buf[0] == 'y' || buf[0] == 'Y';
-
- return 0;
-}
-
/*
* delete_member - delete an entry in a list of members
+ *
+ * It only deletes the first entry with the given name.
*/
-
static void delete_member (char **list, const char *member)
{
int i;
- for (i = 0; list[i]; i++)
- if (list[i] == member)
+ for (i = 0; list[i]; i++) {
+ if (list[i] == member) {
break;
+ }
+ }
- if (list[i])
- for (; list[i]; i++)
+ if (list[i]) {
+ for (; list[i]; i++) {
list[i] = list[i + 1];
+ }
+ }
}
/*
- * grpck - verify group file integrity
+ * process_flags - parse the command line options
+ *
+ * It will not return if an error is encountered.
*/
-
-int main (int argc, char **argv)
+static void process_flags (int argc, char **argv)
{
int arg;
- int errors = 0;
- int deleted = 0;
- int i;
- struct commonio_entry *gre, *tgre;
- struct group *grp;
- int sort_mode = 0;
-
-#ifdef SHADOWGRP
- struct commonio_entry *sge, *tsge;
- struct sgrp *sgr;
- int is_shadow = 0;
-#endif
-
- /*
- * Get my name so that I can use it to report errors.
- */
-
- Prog = Basename (argv[0]);
-
- setlocale (LC_ALL, "");
- bindtextdomain (PACKAGE, LOCALEDIR);
- textdomain (PACKAGE);
-
- OPENLOG ("grpck");
/*
* Parse the command line arguments
*/
-
while ((arg = getopt (argc, argv, "qrs")) != EOF) {
switch (arg) {
case 'q':
/* quiet - ignored for now */
break;
case 'r':
- read_only = 1;
+ read_only = true;
break;
case 's':
- sort_mode = 1;
+ sort_mode = true;
break;
default:
usage ();
/*
* Make certain we have the right number of arguments
*/
-
#ifdef SHADOWGRP
- if (optind != argc && optind + 1 != argc && optind + 2 != argc)
+ if ((argc < optind) || (argc > (optind + 2)))
#else
- if (optind != argc && optind + 1 != argc)
+ if ((argc < optind) || (argc > (optind + 1)))
#endif
+ {
usage ();
+ }
/*
* If there are two left over filenames, use those as the group and
* group password filenames.
*/
-
if (optind != argc) {
grp_file = argv[optind];
- gr_name (grp_file);
+ gr_setdbname (grp_file);
+ use_system_grp_file = false;
}
#ifdef SHADOWGRP
- if (optind + 2 == argc) {
+ if ((optind + 2) == argc) {
sgr_file = argv[optind + 1];
- sgr_name (sgr_file);
- is_shadow = 1;
- } else if (optind == argc)
+ sgr_setdbname (sgr_file);
+ is_shadow = true;
+ use_system_sgr_file = false;
+ } else if (optind == argc) {
is_shadow = sgr_file_present ();
+ }
#endif
+}
+/*
+ * open_files - open the shadow database
+ *
+ * In read-only mode, the databases are not locked and are opened
+ * only for reading.
+ */
+static void open_files (void)
+{
/*
* Lock the files if we aren't in "read-only" mode
*/
-
if (!read_only) {
- if (!gr_lock ()) {
- fprintf (stderr, _("%s: cannot lock file %s\n"),
- Prog, grp_file);
- if (optind == argc)
- SYSLOG ((LOG_WARN, "cannot lock %s", grp_file));
- closelog ();
- exit (E_CANT_LOCK);
+ if (gr_lock () == 0) {
+ fprintf (stderr,
+ _("%s: cannot lock %s; try again later.\n"),
+ Prog, grp_file);
+ fail_exit (E_CANT_LOCK);
}
+ gr_locked = true;
#ifdef SHADOWGRP
- if (is_shadow && !sgr_lock ()) {
- fprintf (stderr, _("%s: cannot lock file %s\n"),
- Prog, sgr_file);
- if (optind == argc)
- SYSLOG ((LOG_WARN, "cannot lock %s", sgr_file));
- closelog ();
- exit (E_CANT_LOCK);
+ if (is_shadow) {
+ if (sgr_lock () == 0) {
+ fprintf (stderr,
+ _("%s: cannot lock %s; try again later.\n"),
+ Prog, sgr_file);
+ fail_exit (E_CANT_LOCK);
+ }
+ sgr_locked = true;
}
#endif
}
* Open the files. Use O_RDONLY if we are in read_only mode,
* O_RDWR otherwise.
*/
-
- if (!gr_open (read_only ? O_RDONLY : O_RDWR)) {
- fprintf (stderr, _("%s: cannot open file %s\n"), Prog,
- grp_file);
- if (optind == argc)
+ if (gr_open (read_only ? O_RDONLY : O_RDWR) == 0) {
+ fprintf (stderr, _("%s: cannot open %s\n"), Prog,
+ grp_file);
+ if (use_system_grp_file) {
SYSLOG ((LOG_WARN, "cannot open %s", grp_file));
- closelog ();
- exit (E_CANT_OPEN);
+ }
+ fail_exit (E_CANT_OPEN);
}
#ifdef SHADOWGRP
- if (is_shadow && !sgr_open (read_only ? O_RDONLY : O_RDWR)) {
- fprintf (stderr, _("%s: cannot open file %s\n"), Prog,
- sgr_file);
- if (optind == argc)
+ if (is_shadow && (sgr_open (read_only ? O_RDONLY : O_RDWR) == 0)) {
+ fprintf (stderr, _("%s: cannot open %s\n"), Prog,
+ sgr_file);
+ if (use_system_sgr_file) {
SYSLOG ((LOG_WARN, "cannot open %s", sgr_file));
- closelog ();
- exit (E_CANT_OPEN);
+ }
+ fail_exit (E_CANT_OPEN);
}
#endif
+}
- if (sort_mode) {
- gr_sort ();
+/*
+ * close_files - close and unlock the group/gshadow databases
+ *
+ * If changed is not set, the databases are not closed, and no
+ * changes are committed in the databases. The databases are
+ * unlocked anyway.
+ */
+static void close_files (bool changed)
+{
+ /*
+ * All done. If there were no change we can just abandon any
+ * changes to the files.
+ */
+ if (changed) {
+ if (gr_close () == 0) {
+ fprintf (stderr, _("%s: failure while writing changes to %s\n"),
+ Prog, grp_file);
+ fail_exit (E_CANT_UPDATE);
+ }
#ifdef SHADOWGRP
- if (is_shadow)
- sgr_sort ();
+ if (is_shadow && (sgr_close () == 0)) {
+ fprintf (stderr, _("%s: failure while writing changes to %s\n"),
+ Prog, sgr_file);
+ fail_exit (E_CANT_UPDATE);
+ }
#endif
- goto write_and_bye;
}
/*
- * Loop through the entire group file.
+ * Don't be anti-social - unlock the files when you're done.
+ */
+#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 */
+ }
+ sgr_locked = false;
+ }
+#endif
+ 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 */
+ }
+ gr_locked = false;
+ }
+}
+
+/*
+ * check_members - check that every members of a group exist
+ *
+ * If an error is detected, *errors is incremented.
+ *
+ * The user will be prompted for the removal of the non-existent
+ * user.
+ *
+ * If any changes are performed, the return value will be 1,
+ * otherwise check_members() returns 0.
+ *
+ * fmt_info, fmt_prompt, and fmt_syslog are used for logging.
+ * * fmt_info must contain two string flags (%s): for the group's
+ * name and the missing member.
+ * * fmt_prompt must contain one string flags (%s): the missing
+ * member.
+ * * fmt_syslog must contain two string flags (%s): for the
+ * group's name and the missing member.
+ */
+static int check_members (const char *groupname,
+ char **members,
+ const char *fmt_info,
+ const char *fmt_prompt,
+ const char *fmt_syslog,
+ int *errors)
+{
+ int i;
+ int members_changed = 0;
+
+ /*
+ * Make sure each member exists
*/
+ for (i = 0; NULL != members[i]; i++) {
+ /* local, no need for xgetpwnam */
+ if (getpwnam (members[i]) != NULL) {
+ continue;
+ }
+ /*
+ * Can't find this user. Remove them
+ * from the list.
+ */
+ *errors += 1;
+ printf (fmt_info, groupname, members[i]);
+ printf (fmt_prompt, members[i]);
+
+ if (!yes_or_no (read_only)) {
+ continue;
+ }
+
+ SYSLOG ((LOG_INFO, fmt_syslog, members[i], groupname));
+ members_changed = 1;
+ delete_member (members, members[i]);
+
+ /* Rewind in case of removal */
+ i--;
+ }
+
+ return members_changed;
+}
+
+#ifdef SHADOWGRP
+/*
+ * compare_members_lists - make sure the list of members is contained in
+ * another list.
+ *
+ * compare_members_lists() checks that all the members of members are
+ * also in other_members.
+ * file and other_file are used for logging.
+ *
+ * TODO: No changes are performed on the lists.
+ */
+static void compare_members_lists (const char *groupname,
+ char **members,
+ char **other_members,
+ const char *file,
+ const char *other_file)
+{
+ char **pmem, **other_pmem;
+
+ for (pmem = members; NULL != *pmem; pmem++) {
+ for (other_pmem = other_members; NULL != *other_pmem; other_pmem++) {
+ if (strcmp (*pmem, *other_pmem) == 0) {
+ break;
+ }
+ }
+ if (*other_pmem == NULL) {
+ printf
+ ("'%s' is a member of the '%s' group in %s but not in %s\n",
+ *pmem, groupname, file, other_file);
+ }
+ }
+}
+#endif /* SHADOWGRP */
- for (gre = __gr_get_head (); gre; gre = gre->next) {
+/*
+ * check_grp_file - check the content of the group file
+ */
+static void check_grp_file (int *errors, bool *changed)
+{
+ struct commonio_entry *gre, *tgre;
+ struct group *grp;
+#ifdef SHADOWGRP
+ struct sgrp *sgr;
+#endif
+
+ /*
+ * Loop through the entire group file.
+ */
+ for (gre = __gr_get_head (); NULL != gre; gre = gre->next) {
/*
* Skip all NIS entries.
*/
- if (gre->line[0] == '+' || gre->line[0] == '-')
+ if ((gre->line[0] == '+') || (gre->line[0] == '-')) {
continue;
+ }
/*
* Start with the entries that are completely corrupt. They
* have no (struct group) entry because they couldn't be
* parsed properly.
*/
-
- if (!gre->eptr) {
+ if (NULL == gre->eptr) {
/*
* Tell the user this entire line is bogus and ask
* them to delete it.
*/
-
- printf (_("invalid group file entry\n"));
- printf (_("delete line `%s'? "), gre->line);
- errors++;
+ (void) puts (_("invalid group file entry"));
+ printf (_("delete line '%s'? "), gre->line);
+ *errors += 1;
/*
* prompt the user to delete the entry or not
*/
-
- if (!yes_or_no ())
+ if (!yes_or_no (read_only)) {
continue;
+ }
/*
* All group file deletions wind up here. This code
* When done, it skips back to the top of the loop
* to try out the next list element.
*/
-
delete_gr:
- SYSLOG ((LOG_INFO, "delete group line `%s'",
- gre->line));
- deleted++;
+ SYSLOG ((LOG_INFO, "delete group line '%s'",
+ gre->line));
+ *changed = true;
__gr_del_entry (gre);
continue;
/*
* Group structure is good, start using it.
*/
-
grp = gre->eptr;
/*
* Make sure this entry has a unique name.
*/
-
- for (tgre = __gr_get_head (); tgre; tgre = tgre->next) {
+ for (tgre = __gr_get_head (); NULL != tgre; tgre = tgre->next) {
const struct group *ent = tgre->eptr;
/*
* Don't check this entry
*/
-
- if (tgre == gre)
+ if (tgre == gre) {
continue;
+ }
/*
* Don't check invalid entries.
*/
-
- if (!ent)
+ if (NULL == ent) {
continue;
+ }
- if (strcmp (grp->gr_name, ent->gr_name) != 0)
+ if (strcmp (grp->gr_name, ent->gr_name) != 0) {
continue;
+ }
/*
* Tell the user this entry is a duplicate of
* another and ask them to delete it.
*/
-
- puts (_("duplicate group entry\n"));
- printf (_("delete line `%s'? "), gre->line);
- errors++;
+ (void) puts (_("duplicate group entry"));
+ printf (_("delete line '%s'? "), gre->line);
+ *errors += 1;
/*
* prompt the user to delete the entry or not
*/
-
- if (yes_or_no ())
+ if (yes_or_no (read_only)) {
goto delete_gr;
+ }
}
/*
* Check for invalid group names. --marekm
*/
- if (!check_group_name (grp->gr_name)) {
- errors++;
- printf (_("invalid group name `%s'\n"), grp->gr_name);
+ if (!is_valid_group_name (grp->gr_name)) {
+ *errors += 1;
+ printf (_("invalid group name '%s'\n"), grp->gr_name);
+ }
+
+ /*
+ * Check for invalid group ID.
+ */
+ if (grp->gr_gid == (gid_t)-1) {
+ printf (_("invalid group ID '%lu'\n"), (long unsigned int)grp->gr_gid);
+ *errors += 1;
}
/*
* groups with no members are returned as groups with one
* member "", causing grpck to fail. --marekm
*/
+ if ( (NULL != grp->gr_mem[0])
+ && (NULL == grp->gr_mem[1])
+ && ('\0' == grp->gr_mem[0][0])) {
+ grp->gr_mem[0] = NULL;
+ }
- if (grp->gr_mem[0] && !grp->gr_mem[1]
- && *(grp->gr_mem[0]) == '\0')
- grp->gr_mem[0] = (char *) 0;
+ if (check_members (grp->gr_name, grp->gr_mem,
+ _("group %s: no user %s\n"),
+ _("delete member '%s'? "),
+ "delete member '%s' from group '%s'",
+ errors) == 1) {
+ *changed = true;
+ gre->changed = true;
+ __gr_set_changed ();
+ }
+#ifdef SHADOWGRP
/*
- * Make sure each member exists
+ * Make sure this entry exists in the /etc/gshadow file.
*/
- for (i = 0; grp->gr_mem[i]; i++) {
- if (getpwnam (grp->gr_mem[i]))
- continue;
- /*
- * Can't find this user. Remove them
- * from the list.
- */
-
- errors++;
- printf (_("group %s: no user %s\n"),
- grp->gr_name, grp->gr_mem[i]);
- printf (_("delete member `%s'? "), grp->gr_mem[i]);
-
- if (!yes_or_no ())
- continue;
-
- SYSLOG ((LOG_INFO, "delete member `%s' group `%s'",
- grp->gr_mem[i], grp->gr_name));
- deleted++;
- delete_member (grp->gr_mem, grp->gr_mem[i]);
- gre->changed = 1;
- __gr_set_changed ();
+ if (is_shadow) {
+ sgr = (struct sgrp *) sgr_locate (grp->gr_name);
+ if (sgr == NULL) {
+ printf (_("no matching group file entry in %s\n"),
+ sgr_file);
+ printf (_("add group '%s' in %s? "),
+ grp->gr_name, sgr_file);
+ *errors += 1;
+ if (yes_or_no (read_only)) {
+ struct sgrp sg;
+ struct group gr;
+ static char *empty = NULL;
+
+ sg.sg_name = grp->gr_name;
+ sg.sg_passwd = grp->gr_passwd;
+ sg.sg_adm = ∅
+ sg.sg_mem = grp->gr_mem;
+ SYSLOG ((LOG_INFO,
+ "add group '%s' to '%s'",
+ grp->gr_name, sgr_file));
+ *changed = true;
+
+ if (sgr_update (&sg) == 0) {
+ fprintf (stderr,
+ _("%s: failed to prepare the new %s entry '%s'\n"),
+ Prog, sgr_dbname (), sg.sg_name);
+ fail_exit (E_CANT_UPDATE);
+ }
+ /* remove password from /etc/group */
+ gr = *grp;
+ gr.gr_passwd = SHADOW_PASSWD_STRING; /* XXX warning: const */
+ if (gr_update (&gr) == 0) {
+ fprintf (stderr,
+ _("%s: failed to prepare the new %s entry '%s'\n"),
+ Prog, gr_dbname (), gr.gr_name);
+ fail_exit (E_CANT_UPDATE);
+ }
+ }
+ } else {
+ /**
+ * Verify that all the members defined in /etc/group are also
+ * present in /etc/gshadow.
+ */
+ compare_members_lists (grp->gr_name,
+ grp->gr_mem, sgr->sg_mem,
+ grp_file, sgr_file);
+ }
}
+#endif
+
}
+}
-#ifdef SHADOWGRP
- if (!is_shadow)
- goto shadow_done;
+#ifdef SHADOWGRP
+/*
+ * check_sgr_file - check the content of the shadowed group file (gshadow)
+ */
+static void check_sgr_file (int *errors, bool *changed)
+{
+ struct group *grp;
+ struct commonio_entry *sge, *tsge;
+ struct sgrp *sgr;
/*
* Loop through the entire shadow group file.
*/
-
- for (sge = __sgr_get_head (); sge; sge = sge->next) {
+ for (sge = __sgr_get_head (); NULL != sge; sge = sge->next) {
/*
* Start with the entries that are completely corrupt. They
* have no (struct sgrp) entry because they couldn't be
* parsed properly.
*/
-
- if (!sge->eptr) {
+ if (NULL == sge->eptr) {
/*
* Tell the user this entire line is bogus and ask
* them to delete it.
*/
-
- printf (_("invalid shadow group file entry\n"));
- printf (_("delete line `%s'? "), sge->line);
- errors++;
+ (void) puts (_("invalid shadow group file entry"));
+ printf (_("delete line '%s'? "), sge->line);
+ *errors += 1;
/*
* prompt the user to delete the entry or not
*/
-
- if (!yes_or_no ())
+ if (!yes_or_no (read_only)) {
continue;
+ }
/*
* All shadow group file deletions wind up here.
* linked list. When done, it skips back to the top
* of the loop to try out the next list element.
*/
-
delete_sg:
- SYSLOG ((LOG_INFO, "delete shadow line `%s'",
- sge->line));
- deleted++;
+ SYSLOG ((LOG_INFO, "delete shadow line '%s'",
+ sge->line));
+ *changed = true;
__sgr_del_entry (sge);
continue;
/*
* Shadow group structure is good, start using it.
*/
-
sgr = sge->eptr;
/*
* Make sure this entry has a unique name.
*/
-
- for (tsge = __sgr_get_head (); tsge; tsge = tsge->next) {
+ for (tsge = __sgr_get_head (); NULL != tsge; tsge = tsge->next) {
const struct sgrp *ent = tsge->eptr;
/*
* Don't check this entry
*/
-
- if (tsge == sge)
+ if (tsge == sge) {
continue;
+ }
/*
* Don't check invalid entries.
*/
-
- if (!ent)
+ if (NULL == ent) {
continue;
+ }
- if (strcmp (sgr->sg_name, ent->sg_name) != 0)
+ if (strcmp (sgr->sg_name, ent->sg_name) != 0) {
continue;
+ }
/*
* Tell the user this entry is a duplicate of
* another and ask them to delete it.
*/
-
- puts (_("duplicate shadow group entry\n"));
- printf (_("delete line `%s'? "), sge->line);
- errors++;
+ (void) puts (_("duplicate shadow group entry"));
+ printf (_("delete line '%s'? "), sge->line);
+ *errors += 1;
/*
* prompt the user to delete the entry or not
*/
-
- if (yes_or_no ())
+ if (yes_or_no (read_only)) {
goto delete_sg;
+ }
}
/*
* Make sure this entry exists in the /etc/group file.
*/
-
- if (!gr_locate (sgr->sg_name)) {
- puts (_("no matching group file entry\n"));
- printf (_("delete line `%s'? "), sge->line);
- errors++;
- if (yes_or_no ())
+ grp = (struct group *) gr_locate (sgr->sg_name);
+ if (grp == NULL) {
+ printf (_("no matching group file entry in %s\n"),
+ grp_file);
+ printf (_("delete line '%s'? "), sge->line);
+ *errors += 1;
+ if (yes_or_no (read_only)) {
goto delete_sg;
+ }
+ } else {
+ /**
+ * Verify that the all members defined in /etc/gshadow are also
+ * present in /etc/group.
+ */
+ compare_members_lists (sgr->sg_name,
+ sgr->sg_mem, grp->gr_mem,
+ sgr_file, grp_file);
}
/*
* Make sure each administrator exists
*/
-
- for (i = 0; sgr->sg_adm[i]; i++) {
- if (getpwnam (sgr->sg_adm[i]))
- continue;
- /*
- * Can't find this user. Remove them
- * from the list.
- */
-
- errors++;
- printf (_
- ("shadow group %s: no administrative user %s\n"),
- sgr->sg_name, sgr->sg_adm[i]);
- printf (_("delete administrative member `%s'? "),
- sgr->sg_adm[i]);
-
- if (!yes_or_no ())
- continue;
-
- SYSLOG ((LOG_INFO,
- "delete admin `%s' from shadow group `%s'",
- sgr->sg_adm[i], sgr->sg_name));
- deleted++;
- delete_member (sgr->sg_adm, sgr->sg_adm[i]);
- sge->changed = 1;
+ if (check_members (sgr->sg_name, sgr->sg_adm,
+ _("shadow group %s: no administrative user %s\n"),
+ _("delete administrative member '%s'? "),
+ "delete admin '%s' from shadow group '%s'",
+ errors) == 1) {
+ *changed = true;
+ sge->changed = true;
__sgr_set_changed ();
}
/*
* Make sure each member exists
*/
-
- for (i = 0; sgr->sg_mem[i]; i++) {
- if (getpwnam (sgr->sg_mem[i]))
- continue;
-
- /*
- * Can't find this user. Remove them from the list.
- */
-
- errors++;
- printf (_("shadow group %s: no user %s\n"),
- sgr->sg_name, sgr->sg_mem[i]);
- printf (_("delete member `%s'? "), sgr->sg_mem[i]);
-
- if (!yes_or_no ())
- continue;
-
- SYSLOG ((LOG_INFO,
- "delete member `%s' from shadow group `%s'",
- sgr->sg_mem[i], sgr->sg_name));
- deleted++;
- delete_member (sgr->sg_mem, sgr->sg_mem[i]);
- sge->changed = 1;
+ if (check_members (sgr->sg_name, sgr->sg_mem,
+ _("shadow group %s: no user %s\n"),
+ _("delete member '%s'? "),
+ "delete member '%s' from shadow group '%s'",
+ errors) == 1) {
+ *changed = true;
+ sge->changed = true;
__sgr_set_changed ();
}
}
-
- shadow_done:
+}
#endif /* SHADOWGRP */
+/*
+ * grpck - verify group file integrity
+ */
+int main (int argc, char **argv)
+{
+ int errors = 0;
+ bool changed = false;
+
/*
- * All done. If there were no deletions we can just abandon any
- * changes to the files.
+ * 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);
+
+ OPENLOG ("grpck");
- if (deleted) {
- write_and_bye:
- if (!gr_close ()) {
- fprintf (stderr, _("%s: cannot update file %s\n"),
- Prog, grp_file);
- exit (E_CANT_UPDATE);
+ /* Parse the command line arguments */
+ process_flags (argc, argv);
+
+ open_files ();
+
+ if (sort_mode) {
+ gr_sort ();
+#ifdef SHADOWGRP
+ if (is_shadow) {
+ sgr_sort ();
}
+ changed = true;
+#endif
+ } else {
+ check_grp_file (&errors, &changed);
#ifdef SHADOWGRP
- if (is_shadow && !sgr_close ()) {
- fprintf (stderr, _("%s: cannot update file %s\n"),
- Prog, sgr_file);
- exit (E_CANT_UPDATE);
+ if (is_shadow) {
+ check_sgr_file (&errors, &changed);
}
#endif
}
- /*
- * Don't be anti-social - unlock the files when you're done.
- */
+ /* Commit the change in the database if needed */
+ close_files (changed);
-#ifdef SHADOWGRP
- if (is_shadow)
- sgr_unlock ();
-#endif
- (void) gr_unlock ();
+ nscd_flush_cache ("group");
/*
* Tell the user what we did and exit.
*/
+ if (0 != errors) {
+ if (changed) {
+ printf (_("%s: the files have been updated\n"), Prog);
+ } else {
+ printf (_("%s: no changes\n"), Prog);
+ }
+ }
- if (errors)
- printf (deleted ?
- _("%s: the files have been updated\n") :
- _("%s: no changes\n"), Prog);
-
- exit (errors ? E_BAD_ENTRY : E_OKAY);
+ return ((0 != errors) ? E_BAD_ENTRY : E_OKAY);
}
+
projects / shadow / blobdiff