6f2cd1b184
Add --with-nsswitch to allow users to specify nsswitch.conf path or disable it. If --with-nsswitch=no but --with-ldap, order is LDAP, then sudoers. Fix --with-ldap-conf-file and --with-ldap-secret-file
123 lines
3.0 KiB
C
123 lines
3.0 KiB
C
/*
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* Copyright (c) 2007 Todd C. Miller <Todd.Miller@courtesan.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <config.h>
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#include <sys/types.h>
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#include <sys/param.h>
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#include <stdio.h>
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#ifdef STDC_HEADERS
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# include <stdlib.h>
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# include <stddef.h>
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#else
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# ifdef HAVE_STDLIB_H
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# include <stdlib.h>
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# endif
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#endif /* STDC_HEADERS */
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#ifdef HAVE_STRING_H
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# include <string.h>
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#else
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# ifdef HAVE_STRINGS_H
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# include <strings.h>
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# endif
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#endif /* HAVE_STRING_H */
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#include "sudo.h"
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#ifndef lint
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__unused static const char rcsid[] = "$Sudo$";
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#endif /* lint */
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extern struct sudo_nss sudo_nss_file;
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#ifdef HAVE_LDAP
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extern struct sudo_nss sudo_nss_ldap;
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#endif
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#if defined(HAVE_LDAP) && defined(_PATH_NSSWITCH_CONF)
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/*
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* Read in /etc/nsswitch.conf
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* Returns a tail queue of matches.
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*/
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struct sudo_nss_list *
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sudo_read_nss()
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{
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FILE *fp;
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char *cp;
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int saw_files = FALSE;
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int saw_ldap = FALSE;
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int got_match = FALSE;
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static struct sudo_nss_list snl;
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if ((fp = fopen(_PATH_NSSWITCH_CONF, "r")) == NULL)
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goto nomatch;
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while ((cp = sudo_parseln(fp)) != NULL) {
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/* Skip blank or comment lines */
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if (*cp == '\0')
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continue;
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/* Look for a line starting with "sudoers:" */
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if (strncasecmp(cp, "sudoers:", 8) != 0)
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continue;
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/* Parse line */
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for ((cp = strtok(cp + 8, " \t")); cp != NULL; (cp = strtok(NULL, " \t"))) {
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if (strcasecmp(cp, "files") == 0 && !saw_files) {
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tq_append(&snl, &sudo_nss_file);
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got_match = TRUE;
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} else if (strcasecmp(cp, "ldap") == 0 && !saw_ldap) {
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tq_append(&snl, &sudo_nss_ldap);
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got_match = TRUE;
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} else if (strcasecmp(cp, "[NOTFOUND=return]") == 0 && got_match) {
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/* NOTFOUND affects the most recent entry */
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tq_last(&snl)->ret_notfound = TRUE;
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got_match = FALSE;
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} else
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got_match = FALSE;
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}
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/* Only parse the first "sudoers:" line */
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break;
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}
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fclose(fp);
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nomatch:
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/* Default to files only if no matches */
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if (tq_empty(&snl))
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tq_append(&snl, &sudo_nss_file);
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return(&snl);
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}
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#else /* HAVE_LDAP && _PATH_NSSWITCH_CONF */
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/*
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* Non-nsswitch.conf version with hard-coded order.
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*/
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struct sudo_nss_list *
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sudo_read_nss()
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{
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static struct sudo_nss_list snl;
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# ifdef HAVE_LDAP
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tq_append(&snl, &sudo_nss_ldap);
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# endif
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tq_append(&snl, &sudo_nss_file);
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return(&snl);
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}
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#endif /* HAVE_LDAP && _PATH_NSSWITCH_CONF */
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