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glibc/nis/nss-nis.c
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/* Copyright (C) 1996, 2001, 2004 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C Library is distributed in the hope that it will be useful, | |
but WITHOUT ANY WARRANTY; without even the implied warranty of | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, write to the Free | |
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
02111-1307 USA. */ | |
#include <ctype.h> | |
#include <stdio.h> | |
#include <stdio_ext.h> | |
#include <rpcsvc/ypclnt.h> | |
#include "nss-nis.h" | |
#include "nsswitch.h" | |
/* Convert YP error number to NSS error number. */ | |
const enum nss_status __yperr2nss_tab[] = | |
{ | |
[YPERR_SUCCESS] = NSS_STATUS_SUCCESS, | |
[YPERR_BADARGS] = NSS_STATUS_UNAVAIL, | |
[YPERR_RPC] = NSS_STATUS_UNAVAIL, | |
[YPERR_DOMAIN] = NSS_STATUS_UNAVAIL, | |
[YPERR_MAP] = NSS_STATUS_UNAVAIL, | |
[YPERR_KEY] = NSS_STATUS_NOTFOUND, | |
[YPERR_YPERR] = NSS_STATUS_UNAVAIL, | |
[YPERR_RESRC] = NSS_STATUS_TRYAGAIN, | |
[YPERR_NOMORE] = NSS_STATUS_NOTFOUND, | |
[YPERR_PMAP] = NSS_STATUS_UNAVAIL, | |
[YPERR_YPBIND] = NSS_STATUS_UNAVAIL, | |
[YPERR_YPSERV] = NSS_STATUS_UNAVAIL, | |
[YPERR_NODOM] = NSS_STATUS_UNAVAIL, | |
[YPERR_BADDB] = NSS_STATUS_UNAVAIL, | |
[YPERR_VERS] = NSS_STATUS_UNAVAIL, | |
[YPERR_ACCESS] = NSS_STATUS_UNAVAIL, | |
[YPERR_BUSY] = NSS_STATUS_TRYAGAIN | |
}; | |
const unsigned int __yperr2nss_count = (sizeof (__yperr2nss_tab) | |
/ sizeof (__yperr2nss_tab[0])); | |
int _nis_default_nss_flags; | |
static const char default_nss[] = "/etc/default/nss"; | |
int | |
_nis_check_default_nss (void) | |
{ | |
FILE *fp = fopen (default_nss, "rc"); | |
int flags = NSS_FLAG_SET; | |
if (fp != NULL) | |
{ | |
char *line = NULL; | |
size_t linelen = 0; | |
__fsetlocking (fp, FSETLOCKING_BYCALLER); | |
while (!feof_unlocked (fp)) | |
{ | |
ssize_t n = getline (&line, &linelen, fp); | |
if (n <= 0) | |
break; | |
/* There currently are only two variables we expect, so | |
simplify the parsing. Recognize only | |
NETID_AUTHORITATIVE = TRUE | |
SERVICES_AUTHORITATIVE = TRUE | |
with arbitrary white spaces. */ | |
char *cp = line; | |
while (isspace (*cp)) | |
++cp; | |
/* Recognize comment lines. */ | |
if (*cp == '#') | |
continue; | |
static const char netid_authoritative[] = "NETID_AUTHORITATIVE"; | |
static const char services_authoritative[] | |
= "SERVICES_AUTHORITATIVE"; | |
size_t flag_len; | |
if (strncmp (cp, netid_authoritative, | |
flag_len = sizeof (netid_authoritative) - 1) != 0 | |
&& strncmp (cp, services_authoritative, | |
flag_len = sizeof (services_authoritative) - 1) | |
!= 0) | |
continue; | |
cp += flag_len; | |
while (isspace (*cp)) | |
++cp; | |
if (*cp++ != '=') | |
continue; | |
while (isspace (*cp)) | |
++cp; | |
if (strncmp (cp, "TRUE", 4) != 0) | |
continue; | |
cp += 4; | |
while (isspace (*cp)) | |
++cp; | |
if (*cp == '\0') | |
flags |= flag_len == sizeof (netid_authoritative) - 1 | |
? NSS_FLAG_NETID_AUTHORITATIVE | |
: NSS_FLAG_SERVICES_AUTHORITATIVE; | |
} | |
free (line); | |
fclose (fp); | |
} | |
_nis_default_nss_flags = flags; | |
return flags; | |
} |