[svn-upgrade] Integrating new upstream version, shadow (19990709)
This commit is contained in:
nekral-guest
650
src/grpck.c
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650
src/grpck.c
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@ -0,0 +1,650 @@
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/*
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* Copyright 1992 - 1994, Julianne Frances Haugh
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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||||
* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of Julianne F. Haugh nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <config.h>
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#include "rcsid.h"
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RCSID(PKG_VER "$Id: grpck.c,v 1.12 1999/06/07 16:40:45 marekm Exp $")
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#include <stdio.h>
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#include <fcntl.h>
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#include <grp.h>
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#include "prototypes.h"
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#include "defines.h"
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#include "chkname.h"
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#include <pwd.h>
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#include "commonio.h"
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#include "groupio.h"
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extern void __gr_del_entry P_((const struct commonio_entry *));
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extern struct commonio_entry *__gr_get_head P_((void));
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#ifdef SHADOWGRP
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#include "sgroupio.h"
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extern void __sgr_del_entry P_((const struct commonio_entry *));
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extern struct commonio_entry *__sgr_get_head P_((void));
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#endif
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/*
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* Exit codes
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*/
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#define E_OKAY 0
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#define E_USAGE 1
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#define E_BAD_ENTRY 2
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#define E_CANT_OPEN 3
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#define E_CANT_LOCK 4
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#define E_CANT_UPDATE 5
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/*
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* Global variables
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*/
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extern int optind;
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extern char *optarg;
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/*
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* Local variables
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*/
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static char *Prog;
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static const char *grp_file = GROUP_FILE;
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#ifdef SHADOWGRP
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static const char *sgr_file = SGROUP_FILE;
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#endif
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static int read_only = 0;
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|
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/* local function prototypes */
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static void usage P_((void));
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static int yes_or_no P_((void));
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static void delete_member P_((char **, const char *));
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int main P_((int, char **));
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/*
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* usage - print syntax message and exit
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*/
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static void
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usage(void)
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{
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#ifdef SHADOWGRP
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fprintf(stderr, _("Usage: %s [ -r ] [ group [ gshadow ] ]\n"), Prog);
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#else
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fprintf(stderr, _("Usage: %s [ -r ] [ group ]\n"), Prog);
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#endif
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exit(E_USAGE);
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}
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/*
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* yes_or_no - get answer to question from the user
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*/
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static int
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yes_or_no(void)
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{
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char buf[80];
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/*
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* In read-only mode all questions are answered "no".
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*/
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if (read_only) {
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puts(_("No"));
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return 0;
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}
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/*
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* Get a line and see what the first character is.
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*/
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if (fgets(buf, sizeof buf, stdin))
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return buf[0] == 'y' || buf[0] == 'Y';
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return 0;
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}
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/*
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* delete_member - delete an entry in a list of members
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*/
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static void
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delete_member(char **list, const char *member)
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{
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int i;
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for (i = 0; list[i]; i++)
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if (list[i] == member)
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break;
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if (list[i])
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for (; list[i]; i++)
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list[i] = list[i + 1];
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}
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/*
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* grpck - verify group file integrity
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*/
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int
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main(int argc, char **argv)
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{
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int arg;
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int errors = 0;
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int deleted = 0;
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int i;
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struct commonio_entry *gre, *tgre;
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struct group *grp;
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#ifdef SHADOWGRP
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struct commonio_entry *sge, *tsge;
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struct sgrp *sgr;
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int is_shadow = 0;
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#endif
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/*
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* Get my name so that I can use it to report errors.
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*/
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Prog = Basename(argv[0]);
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setlocale(LC_ALL, "");
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bindtextdomain(PACKAGE, LOCALEDIR);
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textdomain(PACKAGE);
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openlog(Prog, LOG_PID|LOG_CONS|LOG_NOWAIT, LOG_AUTH);
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/*
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* Parse the command line arguments
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*/
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while ((arg = getopt(argc, argv, "qr")) != EOF) {
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switch (arg) {
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case 'q':
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/* quiet - ignored for now */
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break;
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case 'r':
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read_only = 1;
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break;
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default:
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usage();
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}
|
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}
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|
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/*
|
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* Make certain we have the right number of arguments
|
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*/
|
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#ifdef SHADOWGRP
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if (optind != argc && optind + 1 != argc && optind + 2 != argc)
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#else
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if (optind != argc && optind + 1 != argc)
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#endif
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usage();
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/*
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* If there are two left over filenames, use those as the
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* group and group password filenames.
|
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*/
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if (optind != argc) {
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grp_file = argv[optind];
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gr_name(grp_file);
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}
|
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#ifdef SHADOWGRP
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if (optind + 2 == argc) {
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sgr_file = argv[optind + 1];
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sgr_name(sgr_file);
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is_shadow = 1;
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} else if (optind == argc)
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is_shadow = sgr_file_present();
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#endif
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/*
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* Lock the files if we aren't in "read-only" mode
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*/
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if (!read_only) {
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if (!gr_lock()) {
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fprintf(stderr, _("%s: cannot lock file %s\n"), Prog, grp_file);
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if (optind == argc)
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SYSLOG((LOG_WARN,"cannot lock %s\n",grp_file));
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closelog();
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exit(E_CANT_LOCK);
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}
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#ifdef SHADOWGRP
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if (is_shadow && !sgr_lock()) {
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fprintf(stderr, _("%s: cannot lock file %s\n"), Prog, sgr_file);
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if (optind == argc)
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SYSLOG((LOG_WARN,"cannot lock %s\n",sgr_file));
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closelog();
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exit(E_CANT_LOCK);
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}
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#endif
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}
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/*
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* Open the files. Use O_RDONLY if we are in read_only mode,
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* O_RDWR otherwise.
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*/
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if (!gr_open(read_only ? O_RDONLY : O_RDWR)) {
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fprintf(stderr, _("%s: cannot open file %s\n"), Prog, grp_file);
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if (optind == argc)
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SYSLOG((LOG_WARN, "cannot open %s\n", grp_file));
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closelog();
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exit(E_CANT_OPEN);
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}
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#ifdef SHADOWGRP
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if (is_shadow && !sgr_open(read_only ? O_RDONLY : O_RDWR)) {
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fprintf(stderr, _("%s: cannot open file %s\n"), Prog, sgr_file);
|
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if (optind == argc)
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SYSLOG((LOG_WARN, "cannot open %s\n", sgr_file));
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closelog();
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exit(E_CANT_OPEN);
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}
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#endif
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/*
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* Loop through the entire group file.
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*/
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for (gre = __gr_get_head(); gre; gre = gre->next) {
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/*
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* Skip all NIS entries.
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*/
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if (gre->line[0] == '+' || gre->line[0] == '-')
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continue;
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/*
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* Start with the entries that are completely corrupt.
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* They have no (struct group) entry because they couldn't
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* be parsed properly.
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*/
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if (!gre->entry) {
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/*
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* Tell the user this entire line is bogus and
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* ask them to delete it.
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*/
|
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printf(_("invalid group file entry\n"));
|
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printf(_("delete line `%s'? "), gre->line);
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errors++;
|
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|
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/*
|
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* prompt the user to delete the entry or not
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*/
|
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|
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if (!yes_or_no())
|
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continue;
|
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|
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/*
|
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* All group file deletions wind up here. This
|
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* code removes the current entry from the linked
|
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* list. When done, it skips back to the top of
|
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* the loop to try out the next list element.
|
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*/
|
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|
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delete_gr:
|
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SYSLOG((LOG_INFO, "delete group line `%s'\n",
|
||||
gre->line));
|
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deleted++;
|
||||
|
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__gr_del_entry(gre);
|
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continue;
|
||||
}
|
||||
|
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/*
|
||||
* Group structure is good, start using it.
|
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*/
|
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|
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grp = gre->entry;
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/*
|
||||
* Make sure this entry has a unique name.
|
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*/
|
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|
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for (tgre = __gr_get_head(); tgre; tgre = tgre->next) {
|
||||
|
||||
const struct group *ent = tgre->entry;
|
||||
|
||||
/*
|
||||
* Don't check this entry
|
||||
*/
|
||||
|
||||
if (tgre == gre)
|
||||
continue;
|
||||
|
||||
/*
|
||||
* Don't check invalid entries.
|
||||
*/
|
||||
|
||||
if (!ent)
|
||||
continue;
|
||||
|
||||
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++;
|
||||
|
||||
/*
|
||||
* prompt the user to delete the entry or not
|
||||
*/
|
||||
|
||||
if (yes_or_no())
|
||||
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);
|
||||
}
|
||||
|
||||
/*
|
||||
* Check for a Slackware bug. Make sure GID is not -1
|
||||
* (it has special meaning for some syscalls). --marekm
|
||||
*/
|
||||
|
||||
if (grp->gr_gid == (gid_t) -1) {
|
||||
errors++;
|
||||
printf(_("group %s: bad GID (%d)\n"),
|
||||
grp->gr_name, (int) grp->gr_gid);
|
||||
}
|
||||
|
||||
/*
|
||||
* Workaround for a NYS libc 5.3.12 bug on RedHat 4.2 -
|
||||
* groups with no members are returned as groups with
|
||||
* one member "", causing grpck to fail. --marekm
|
||||
*/
|
||||
|
||||
if (grp->gr_mem[0] && !grp->gr_mem[1] && *(grp->gr_mem[0]) == '\0')
|
||||
grp->gr_mem[0] = (char *) 0;
|
||||
|
||||
/*
|
||||
* Make sure each member exists
|
||||
*/
|
||||
|
||||
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'\n",
|
||||
grp->gr_mem[i], grp->gr_name));
|
||||
deleted++;
|
||||
delete_member(grp->gr_mem, grp->gr_mem[i]);
|
||||
gre->changed = 1;
|
||||
__gr_set_changed();
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef SHADOWGRP
|
||||
if (!is_shadow)
|
||||
goto shadow_done;
|
||||
|
||||
/*
|
||||
* Loop through the entire shadow group file.
|
||||
*/
|
||||
|
||||
for (sge = __sgr_get_head(); 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->entry) {
|
||||
|
||||
/*
|
||||
* 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++;
|
||||
|
||||
/*
|
||||
* prompt the user to delete the entry or not
|
||||
*/
|
||||
|
||||
if (!yes_or_no())
|
||||
continue;
|
||||
|
||||
/*
|
||||
* All shadow group file deletions wind up here.
|
||||
* This code removes the current entry from the
|
||||
* 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'\n",
|
||||
sge->line));
|
||||
deleted++;
|
||||
|
||||
__sgr_del_entry(sge);
|
||||
continue;
|
||||
}
|
||||
|
||||
/*
|
||||
* Shadow group structure is good, start using it.
|
||||
*/
|
||||
|
||||
sgr = sge->entry;
|
||||
|
||||
/*
|
||||
* Make sure this entry has a unique name.
|
||||
*/
|
||||
|
||||
for (tsge = __sgr_get_head(); tsge; tsge = tsge->next) {
|
||||
|
||||
const struct sgrp *ent = tsge->entry;
|
||||
|
||||
/*
|
||||
* Don't check this entry
|
||||
*/
|
||||
|
||||
if (tsge == sge)
|
||||
continue;
|
||||
|
||||
/*
|
||||
* Don't check invalid entries.
|
||||
*/
|
||||
|
||||
if (!ent)
|
||||
continue;
|
||||
|
||||
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++;
|
||||
|
||||
/*
|
||||
* prompt the user to delete the entry or not
|
||||
*/
|
||||
|
||||
if (yes_or_no())
|
||||
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())
|
||||
goto delete_sg;
|
||||
}
|
||||
|
||||
/*
|
||||
* 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'\n",
|
||||
sgr->sg_adm[i], sgr->sg_name));
|
||||
deleted++;
|
||||
delete_member(sgr->sg_adm, sgr->sg_adm[i]);
|
||||
sge->changed = 1;
|
||||
__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'\n",
|
||||
sgr->sg_mem[i], sgr->sg_name));
|
||||
deleted++;
|
||||
delete_member(sgr->sg_mem, sgr->sg_mem[i]);
|
||||
sge->changed = 1;
|
||||
__sgr_set_changed();
|
||||
}
|
||||
}
|
||||
|
||||
shadow_done:
|
||||
#endif /* SHADOWGRP */
|
||||
|
||||
/*
|
||||
* All done. If there were no deletions we can just abandon any
|
||||
* changes to the files.
|
||||
*/
|
||||
|
||||
if (deleted) {
|
||||
if (!gr_close()) {
|
||||
fprintf(stderr, _("%s: cannot update file %s\n"),
|
||||
Prog, grp_file);
|
||||
exit(E_CANT_UPDATE);
|
||||
}
|
||||
#ifdef SHADOWGRP
|
||||
if (is_shadow && !sgr_close()) {
|
||||
fprintf(stderr, _("%s: cannot update file %s\n"),
|
||||
Prog, sgr_file);
|
||||
exit(E_CANT_UPDATE);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
/*
|
||||
* Don't be anti-social - unlock the files when you're done.
|
||||
*/
|
||||
|
||||
#ifdef SHADOWGRP
|
||||
if (is_shadow)
|
||||
sgr_unlock();
|
||||
#endif
|
||||
(void) gr_unlock();
|
||||
|
||||
/*
|
||||
* Tell the user what we did and exit.
|
||||
*/
|
||||
|
||||
if (errors)
|
||||
#ifdef NDBM
|
||||
printf(deleted ?
|
||||
_("%s: the files have been updated; run mkpasswd\n") :
|
||||
_("%s: no changes\n"), Prog);
|
||||
#else
|
||||
printf(deleted ?
|
||||
_("%s: the files have been updated\n") :
|
||||
_("%s: no changes\n"), Prog);
|
||||
#endif
|
||||
|
||||
exit(errors ? E_BAD_ENTRY : E_OKAY);
|
||||
}
|
||||
Reference in New Issue
Block a user