1 /* Copyright (c) 1997-2017 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
23 #include <rpcsvc/nis.h>
26 nis_local_group (void)
28 static char __nisgroup
[NIS_MAXNAMELEN
+ 1];
31 if (__nisgroup
[0] == '\0'
32 && (cptr
= getenv ("NIS_GROUP")) != NULL
33 && strlen (cptr
) < NIS_MAXNAMELEN
)
35 char *cp
= stpcpy (__nisgroup
, cptr
);
39 cptr
= nis_local_directory ();
40 if ((cp
- __nisgroup
) + strlen (cptr
) + 1 < NIS_MAXNAMELEN
)
52 libnsl_hidden_def (nis_local_group
)
55 nis_local_directory (void)
57 static char __nisdomainname
[NIS_MAXNAMELEN
+ 1];
59 if (__nisdomainname
[0] == '\0')
61 if (getdomainname (__nisdomainname
, NIS_MAXNAMELEN
) < 0)
62 __nisdomainname
[0] = '\0';
65 char *cp
= rawmemchr (__nisdomainname
, '\0');
67 /* Missing trailing dot? */
76 return __nisdomainname
;
78 libnsl_hidden_def (nis_local_directory
)
81 nis_local_principal (void)
83 static char __principal
[NIS_MAXNAMELEN
+ 1];
85 if (__principal
[0] == '\0')
87 char buf
[NIS_MAXNAMELEN
+ 1];
89 uid_t uid
= geteuid ();
93 int len
= snprintf (buf
, NIS_MAXNAMELEN
- 1,
94 "[auth_name=%d,auth_type=LOCAL],cred.org_dir.%s",
95 uid
, nis_local_directory ());
97 if (len
>= NIS_MAXNAMELEN
- 1)
99 /* XXX The buffer is too small. Can this happen??? */
100 return strcpy (__principal
, "nobody");
102 if (buf
[len
- 1] != '.')
108 res
= nis_list (buf
, USE_DGRAM
+ NO_AUTHINFO
+ FOLLOW_LINKS
+
109 FOLLOW_PATH
, NULL
, NULL
);
114 if (NIS_RES_STATUS (res
) == NIS_SUCCESS
)
116 if (res
->objects
.objects_len
> 1)
118 /* More than one principal with same uid? something
119 wrong with cred table. Should be unique. Warn user
122 LOCAL entry for UID %d in directory %s not unique\n"),
123 uid
, nis_local_directory ());
125 strcpy (__principal
, ENTRY_VAL (res
->objects
.objects_val
, 0));
126 nis_freeresult (res
);
131 nis_freeresult (res
);
136 return strcpy (__principal
, nis_local_host ());
138 /* Should be never reached */
143 libnsl_hidden_def (nis_local_principal
)
146 nis_local_host (void)
148 static char __nishostname
[NIS_MAXNAMELEN
+ 1];
150 if (__nishostname
[0] == '\0')
152 if (gethostname (__nishostname
, NIS_MAXNAMELEN
) < 0)
153 __nishostname
[0] = '\0';
156 char *cp
= rawmemchr (__nishostname
, '\0');
157 int len
= cp
- __nishostname
;
159 /* Hostname already fully qualified? */
161 return __nishostname
;
163 if (len
+ strlen (nis_local_directory ()) + 1 > NIS_MAXNAMELEN
)
165 __nishostname
[0] = '\0';
166 return __nishostname
;
170 strncpy (cp
, nis_local_directory (), NIS_MAXNAMELEN
- len
-1);
171 __nishostname
[NIS_MAXNAMELEN
] = '\0';
175 return __nishostname
;
177 libnsl_hidden_def (nis_local_host
)