aboutsummaryrefslogtreecommitdiff
path: root/nis
diff options
context:
space:
mode:
Diffstat (limited to 'nis')
-rw-r--r--nis/nss-nis.c83
-rw-r--r--nis/nss-nis.h14
-rw-r--r--nis/nss_nis/nis-initgroups.c79
-rw-r--r--nis/nss_nis/nis-service.c4
4 files changed, 100 insertions, 80 deletions
diff --git a/nis/nss-nis.c b/nis/nss-nis.c
index 7f91e64..eef73c4 100644
--- a/nis/nss-nis.c
+++ b/nis/nss-nis.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996, 2001 Free Software Foundation, Inc.
+/* 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
@@ -16,6 +16,9 @@
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"
@@ -45,3 +48,81 @@ const enum nss_status __yperr2nss_tab[] =
};
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;
+}
diff --git a/nis/nss-nis.h b/nis/nss-nis.h
index 47b0a67..659b3a1 100644
--- a/nis/nss-nis.h
+++ b/nis/nss-nis.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996 Free Software Foundation, Inc.
+/* Copyright (C) 1996, 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
@@ -36,4 +36,16 @@ yperr2nss (int errval)
return __yperr2nss_tab[(unsigned int) errval];
}
+#define NSS_FLAG_SET 1
+#define NSS_FLAG_NETID_AUTHORITATIVE 2
+#define NSS_FLAG_SERVICES_AUTHORITATIVE 4
+extern int _nis_default_nss_flags attribute_hidden;
+extern int _nis_check_default_nss (void) attribute_hidden;
+
+extern inline __attribute__((always_inline)) int
+_nis_default_nss (void)
+{
+ return _nis_default_nss_flags ?: _nis_check_default_nss ();
+}
+
#endif /* nis/nss-nis.h */
diff --git a/nis/nss_nis/nis-initgroups.c b/nis/nss_nis/nis-initgroups.c
index e3ba0cd..c1efe9d 100644
--- a/nis/nss_nis/nis-initgroups.c
+++ b/nis/nss_nis/nis-initgroups.c
@@ -23,8 +23,6 @@
#include <grp.h>
#include <nss.h>
#include <pwd.h>
-#include <stdio.h>
-#include <stdio_ext.h>
#include <string.h>
#include <unistd.h>
#include <rpcsvc/yp.h>
@@ -129,78 +127,6 @@ internal_getgrent_r (struct group *grp, char *buffer, size_t buflen,
}
-static int init;
-static int use_netid;
-
-
-static const char default_nss[] = "/etc/default/nss";
-
-static void
-check_default_nss (void)
-{
- FILE *fp = fopen (default_nss, "rc");
- 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 is only one variable we expect, so
- simplify the parsing. Recognize only
-
- NETID_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";
- if (strncmp (cp, netid_authoritative,
- sizeof (netid_authoritative) - 1) != 0)
- continue;
-
- cp += sizeof (netid_authoritative) - 1;
- 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')
- use_netid = 1;
-
- /* For now, just drop out of the loop. */
- break;
- }
-
- free (line);
-
- fclose (fp);
- }
- init = 1;
-}
-
-
static int
get_uid (const char *user, uid_t *uidp)
{
@@ -321,10 +247,7 @@ _nss_nis_initgroups_dyn (const char *user, gid_t group, long int *start,
return NSS_STATUS_UNAVAIL;
/* Check whether we are supposed to use the netid.byname map. */
- if (!init)
- check_default_nss ();
-
- if (use_netid)
+ if (_nis_default_nss () & NSS_FLAG_NETID_AUTHORITATIVE)
{
/* We need the user ID. */
uid_t uid;
diff --git a/nis/nss_nis/nis-service.c b/nis/nss_nis/nis-service.c
index 6e086e4..32ac619 100644
--- a/nis/nss_nis/nis-service.c
+++ b/nis/nss_nis/nis-service.c
@@ -330,6 +330,10 @@ _nss_nis_getservbyname_r (const char *name, const char *protocol,
return NSS_STATUS_SUCCESS;
}
+ /* Check if it is safe to rely on services.byservicename. */
+ if (_nis_default_nss () & NSS_FLAG_SERVICES_AUTHORITATIVE)
+ return status;
+
struct ypall_callback ypcb;
struct search_t req;
generated by cgit v1.1 at 2024-11-27 00:54:15 +0000