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78 lines
2.9 KiB
C
78 lines
2.9 KiB
C
/* Copyright (c) 2003 Juan Lang
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#ifndef __WINE_NBNAMECACHE_H
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#define __WINE_NBNAMECACHE_H
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#define WIN32_NO_STATUS
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#define _INC_WINDOWS
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#define COM_NO_WINDOWS_H
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#include <stdarg.h>
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#include <windef.h>
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#include <winbase.h>
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#include <nb30.h>
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struct NBNameCache;
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/* Represents an entry in the name cache. If the NetBIOS name is known, it's
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* in nbname. Otherwise, nbname begins with '*'. numAddresses defines the
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* number of addresses in addresses.
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* Notice that it allows multiple addresses per name, but doesn't explicitly
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* allow group names. That's because all names so far are unique; if a use for
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* group names comes up, adding a flag here is simple enough.
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* Also, only the first NCBNAMSZ - 1 bytes are considered significant. This is
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* because a name may have been resolved using DNS, and the suffix byte is
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* always truncated for DNS lookups.
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*/
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typedef struct _NBNameCacheEntry
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{
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UCHAR name[NCBNAMSZ];
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UCHAR nbname[NCBNAMSZ];
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DWORD numAddresses;
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DWORD addresses[1];
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} NBNameCacheEntry;
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/* Functions that create, manipulate, and destroy a name cache. Thread-safe,
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* with the exception of NBNameCacheDestroy--ensure that no other threads are
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* manipulating the cache before destroying it.
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*/
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/* Allocates a new name cache from heap, and sets the expire time on new
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* entries to entryExpireTimeMS after a cache entry is added.
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*/
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struct NBNameCache *NBNameCacheCreate(HANDLE heap, DWORD entryExpireTimeMS);
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/* Adds an entry to the cache. The entry is assumed to have been allocated
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* from the same heap as the name cache; the name cache will own the entry
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* from now on. The entry's expire time is initialized at this time to
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* entryExpireTimeMS + the current time in MS. If an existing entry with the
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* same name was in the cache, the entry is replaced. Returns TRUE on success
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* or FALSE on failure.
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*/
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BOOL NBNameCacheAddEntry(struct NBNameCache *cache, NBNameCacheEntry *entry);
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/* Finds the entry with name name in the cache and returns a pointer to it, or
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* NULL if it isn't found.
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*/
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const NBNameCacheEntry *NBNameCacheFindEntry(struct NBNameCache *cache,
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const UCHAR name[NCBNAMSZ]);
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void NBNameCacheDestroy(struct NBNameCache *cache);
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#endif /* ndef __WINE_NBNAMECACHE_H */
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