1 /* Copyright (c) 2003 Juan Lang
3 * This library is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU Lesser General Public
5 * License as published by the Free Software Foundation; either
6 * version 2.1 of the License, or (at your option) any later version.
8 * This library is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * Lesser General Public License for more details.
13 * You should have received a copy of the GNU Lesser General Public
14 * License along with this library; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 #ifndef __WINE_NBNAMECACHE_H
18 #define __WINE_NBNAMECACHE_H
28 /* Represents an entry in the name cache. If the NetBIOS name is known, it's
29 * in nbname. Otherwise, nbname begins with '*'. numAddresses defines the
30 * number of addresses in addresses.
31 * Notice that it allows multiple addresses per name, but doesn't explicitly
32 * allow group names. That's because all names so far are unique; if a use for
33 * group names comes up, adding a flag here is simple enough.
34 * Also, only the first NCBNAMSZ - 1 bytes are considered significant. This is
35 * because a name may have been resolved using DNS, and the suffix byte is
36 * always truncated for DNS lookups.
38 typedef struct _NBNameCacheEntry
41 UCHAR nbname[NCBNAMSZ];
46 /* Functions that create, manipulate, and destroy a name cache. Thread-safe,
47 * with the exception of NBNameCacheDestroy--ensure that no other threads are
48 * manipulating the cache before destoying it.
51 /* Allocates a new name cache from heap, and sets the expire time on new
52 * entries to entryExpireTimeMS after a cache entry is added.
54 struct NBNameCache *NBNameCacheCreate(HANDLE heap, DWORD entryExpireTimeMS);
56 /* Adds an entry to the cache. The entry is assumed to have been allocated
57 * from the same heap as the name cache; the name cache will own the entry
58 * from now on. The entry's expire time is initialized at this time to
59 * entryExpireTimeMS + the current time in MS. If an existing entry with the
60 * same name was in the cache, the entry is replaced. Returns TRUE on success
61 * or FALSE on failure.
63 BOOL NBNameCacheAddEntry(struct NBNameCache *cache, NBNameCacheEntry *entry);
65 /* Finds the entry with name name in the cache and returns a pointer to it, or
66 * NULL if it isn't found.
68 const NBNameCacheEntry *NBNameCacheFindEntry(struct NBNameCache *cache,
69 const UCHAR name[NCBNAMSZ]);
71 /* If the entry with name name is in the cache, updates its nbname member to
72 * nbname. The entry's expire time is implicitly updated to entryExpireTimeMS
73 * + the current time in MS, since getting the NetBIOS name meant validating
74 * the name and address anyway.
75 * Returns TRUE on success or FALSE on failure.
77 BOOL NBNameCacheUpdateNBName(struct NBNameCache *cache,
78 const UCHAR name[NCBNAMSZ], const UCHAR nbname[NCBNAMSZ]);
80 void NBNameCacheDestroy(struct NBNameCache *cache);
82 #endif /* ndef __WINE_NBNAMECACHE_H */