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sourceware.org Git - glibc.git/blob - nis/nss_nis/nis-alias.c
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1 /* Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 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 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
25 #include <bits/libc-lock.h>
26 #include <rpcsvc/yp.h>
27 #include <rpcsvc/ypclnt.h>
31 __libc_lock_define_initialized (static, lock
)
33 static bool_t new_start
= 1;
34 static char *oldkey
= NULL
;
35 static int oldkeylen
= 0;
38 _nss_nis_parse_aliasent (const char *key
, char *alias
, struct aliasent
*result
,
39 char *buffer
, size_t buflen
, int *errnop
)
41 char *first_unused
= buffer
+ strlen (alias
) + 1;
43 buflen
- (buflen
% __alignof__ (char *)) - strlen (alias
) - 2;
47 result
->alias_members_len
= 0;
50 strcpy (first_unused
, key
);
52 if (first_unused
[room_left
- 1] != '\0')
54 /* The line is too long for our buffer. */
60 result
->alias_name
= first_unused
;
62 /* Terminate the line for any case. */
63 cp
= strpbrk (alias
, "#\n");
67 first_unused
+= strlen (result
->alias_name
) + 1;
68 /* Adjust the pointer so it is aligned for
70 first_unused
+= __alignof__ (char *) - 1;
71 first_unused
-= ((first_unused
- (char *) 0) % __alignof__ (char *));
72 result
->alias_members
= (char **) first_unused
;
78 /* Skip leading blanks. */
79 while (isspace (*line
))
85 if (room_left
< sizeof (char *))
87 room_left
-= sizeof (char *);
88 result
->alias_members
[result
->alias_members_len
] = line
;
90 while (*line
!= '\0' && *line
!= ',')
93 if (line
!= result
->alias_members
[result
->alias_members_len
])
97 result
->alias_members_len
++;
100 return result
->alias_members_len
== 0 ? 0 : 1;
104 _nss_nis_setaliasent (void)
106 __libc_lock_lock (lock
);
116 __libc_lock_unlock (lock
);
118 return NSS_STATUS_SUCCESS
;
122 _nss_nis_endaliasent (void)
124 __libc_lock_lock (lock
);
134 __libc_lock_unlock (lock
);
136 return NSS_STATUS_SUCCESS
;
139 static enum nss_status
140 internal_nis_getaliasent_r (struct aliasent
*alias
, char *buffer
,
141 size_t buflen
, int *errnop
)
151 if (yp_get_default_domain (&domain
))
152 return NSS_STATUS_UNAVAIL
;
154 alias
->alias_local
= 0;
156 /* Get the next entry until we found a correct one. */
159 enum nss_status retval
;
162 retval
= yperr2nss (yp_first (domain
, "mail.aliases",
163 &outkey
, &keylen
, &result
, &len
));
165 retval
= yperr2nss ( yp_next (domain
, "mail.aliases", oldkey
,
166 oldkeylen
, &outkey
, &keylen
,
168 if (retval
!= NSS_STATUS_SUCCESS
)
170 if (retval
== NSS_STATUS_TRYAGAIN
)
175 if ((size_t) (len
+ 1) > buflen
)
179 return NSS_STATUS_TRYAGAIN
;
181 p
= strncpy (buffer
, result
, len
);
187 parse_res
= _nss_nis_parse_aliasent (outkey
, p
, alias
, buffer
, buflen
,
193 return NSS_STATUS_TRYAGAIN
;
203 return NSS_STATUS_SUCCESS
;
207 _nss_nis_getaliasent_r (struct aliasent
*alias
, char *buffer
, size_t buflen
,
210 enum nss_status status
;
212 __libc_lock_lock (lock
);
214 status
= internal_nis_getaliasent_r (alias
, buffer
, buflen
, errnop
);
216 __libc_lock_unlock (lock
);
222 _nss_nis_getaliasbyname_r (const char *name
, struct aliasent
*alias
,
223 char *buffer
, size_t buflen
, int *errnop
)
225 enum nss_status retval
;
231 size_t namlen
= strlen (name
);
232 char name2
[namlen
+ 1];
238 return NSS_STATUS_UNAVAIL
;
241 if (yp_get_default_domain (&domain
))
242 return NSS_STATUS_UNAVAIL
;
244 /* Convert name to lowercase. */
245 for (i
= 0; i
< namlen
; ++i
)
246 name2
[i
] = tolower (name
[i
]);
249 retval
= yperr2nss (yp_match (domain
, "mail.aliases", name2
, namlen
,
252 if (retval
!= NSS_STATUS_SUCCESS
)
254 if (retval
== NSS_STATUS_TRYAGAIN
)
259 if ((size_t) (len
+ 1) > buflen
)
263 return NSS_STATUS_TRYAGAIN
;
266 p
= strncpy (buffer
, result
, len
);
272 alias
->alias_local
= 0;
273 parse_res
= _nss_nis_parse_aliasent (name
, p
, alias
, buffer
, buflen
, errnop
);
277 return NSS_STATUS_TRYAGAIN
;
279 return NSS_STATUS_NOTFOUND
;
282 return NSS_STATUS_SUCCESS
;
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