* if that character is in the illegal characters set.
* This is faster than using strchr_m().
*
- * mangled_cache - Cache header used for storing mangled -> original
- * reverse maps.
- *
- * mc_initialized - False until the mangled_cache structure has been
- * initialized via a call to reset_mangled_cache().
- *
- * MANGLED_CACHE_MAX_ENTRIES - Default maximum number of entries for the
- * cache. A value of 0 indicates "infinite".
- *
- * MANGLED_CACHE_MAX_MEMORY - Default maximum amount of memory for the
- * cache. When the cache was kept as an array of 256
- * byte strings, the default cache size was 50 entries.
- * This required a fixed 12.5Kbytes of memory. The
- * mangled stack parameter is no longer used (though
- * this might change). We're now using a fixed 16Kbyte
- * maximum cache size. This will probably be much more
- * than 50 entries.
*/
char magic_char = '~';
#define isbasechar(C) ( (chartest[ ((C) & 0xff) ]) & BASECHAR_MASK )
#define isillegal(C) ( (chartest[ ((C) & 0xff) ]) & ILLEGAL_MASK )
-static ubi_cacheRoot mangled_cache[1] = { { { 0, 0, 0, 0 }, 0, 0, 0, 0, 0, 0 } };
-static BOOL mc_initialized = False;
-#define MANGLED_CACHE_MAX_ENTRIES 1024
-#define MANGLED_CACHE_MAX_MEMORY 0
+static TDB_CONTEXT *tdb_mangled_cache;
/* -------------------------------------------------------------------- */
return( False );
}
-/* ************************************************************************** **
- * Compare two cache keys and return a value indicating their ordinal
- * relationship.
- *
- * Input: ItemPtr - Pointer to a comparison key. In this case, this will
- * be a mangled name string.
- * NodePtr - Pointer to a node in the cache. The node structure
- * will be followed in memory by a mangled name string.
- *
- * Output: A signed integer, as follows:
- * (x < 0) <==> Key1 less than Key2
- * (x == 0) <==> Key1 equals Key2
- * (x > 0) <==> Key1 greater than Key2
- *
- * Notes: This is a ubiqx-style comparison routine. See ubi_BinTree for
- * more info.
- *
- * ************************************************************************** **
- */
-static signed int cache_compare( ubi_btItemPtr ItemPtr, ubi_btNodePtr NodePtr )
-{
- char *Key1 = (char *)ItemPtr;
- char *Key2 = (char *)(((ubi_cacheEntryPtr)NodePtr) + 1);
-
- return( StrCaseCmp( Key1, Key2 ) );
-}
-
-/* ************************************************************************** **
- * Free a cache entry.
- *
- * Input: WarrenZevon - Pointer to the entry that is to be returned to
- * Nirvana.
- * Output: none.
- *
- * Notes: This function gets around the possibility that the standard
- * free() function may be implemented as a macro, or other evil
- * subversions (oh, so much fun).
- *
- * ************************************************************************** **
- */
-static void cache_free_entry( ubi_trNodePtr WarrenZevon )
-{
- ZERO_STRUCTP(WarrenZevon);
- SAFE_FREE( WarrenZevon );
-}
-
-/* ************************************************************************** **
- * Initializes or clears the mangled cache.
- *
- * Input: none.
- * Output: none.
- *
- * Notes: There is a section below that is commented out. It shows how
- * one might use lp_ calls to set the maximum memory and entry size
- * of the cache. You might also want to remove the constants used
- * in ubi_cacheInit() and replace them with lp_ calls. If so, then
- * the calls to ubi_cacheSetMax*() would be moved into the else
- * clause. Another option would be to pass in the max_entries and
- * max_memory values as parameters. crh 09-Apr-1998.
- *
- * ************************************************************************** **
- */
+/***************************************************************************
+ Initializes or clears the mangled cache.
+***************************************************************************/
static void mangle_reset( void )
{
- if( !mc_initialized ) {
- (void)ubi_cacheInit( mangled_cache,
- cache_compare,
- cache_free_entry,
- MANGLED_CACHE_MAX_ENTRIES,
- MANGLED_CACHE_MAX_MEMORY );
- mc_initialized = True;
- } else {
- (void)ubi_cacheClear( mangled_cache );
- }
-
- /*
- (void)ubi_cacheSetMaxEntries( mangled_cache, lp_mangled_cache_entries() );
- (void)ubi_cacheSetMaxMemory( mangled_cache, lp_mangled_cache_memory() );
- */
+ /* We could close and re-open the tdb here... should we ? The old code did
+ the equivalent... JRA. */
}
-/* ************************************************************************** **
- * Add a mangled name into the cache.
- *
- * Notes: If the mangled cache has not been initialized, then the
- * function will simply fail. It could initialize the cache,
- * but that's not the way it was done before I changed the
- * cache mechanism, so I'm sticking with the old method.
- *
- * If the extension of the raw name maps directly to the
- * extension of the mangled name, then we'll store both names
- * *without* extensions. That way, we can provide consistent
- * reverse mangling for all names that match. The test here is
- * a bit more careful than the one done in earlier versions of
- * mangle.c:
- *
- * - the extension must exist on the raw name,
- * - it must be all lower case
- * - it must match the mangled extension (to prove that no
- * mangling occurred).
- *
- * crh 07-Apr-1998
- *
- * ************************************************************************** **
- */
-static void cache_mangled_name( char *mangled_name, char *raw_name )
+/***************************************************************************
+ Add a mangled name into the cache.
+ If the extension of the raw name maps directly to the
+ extension of the mangled name, then we'll store both names
+ *without* extensions. That way, we can provide consistent
+ reverse mangling for all names that match. The test here is
+ a bit more careful than the one done in earlier versions of
+ mangle.c:
+
+ - the extension must exist on the raw name,
+ - it must be all lower case
+ - it must match the mangled extension (to prove that no
+ mangling occurred).
+ crh 07-Apr-1998
+**************************************************************************/
+
+static void cache_mangled_name( const char mangled_name[13], char *raw_name )
{
- ubi_cacheEntryPtr new_entry;
- char *s1;
- char *s2;
- size_t mangled_len;
- size_t raw_len;
- size_t i;
+ TDB_DATA data_val;
+ char mangled_name_key[13];
+ char *s1;
+ char *s2;
/* If the cache isn't initialized, give up. */
- if( !mc_initialized )
+ if( !tdb_mangled_cache )
return;
/* Init the string lengths. */
- mangled_len = strlen( mangled_name );
- raw_len = strlen( raw_name );
+ safe_strcpy(mangled_name_key, mangled_name, sizeof(mangled_name_key)-1);
/* See if the extensions are unmangled. If so, store the entry
* without the extension, thus creating a "group" reverse map.
*/
- s1 = strrchr( mangled_name, '.' );
+ s1 = strrchr( mangled_name_key, '.' );
if( s1 && (s2 = strrchr( raw_name, '.' )) ) {
- i = 1;
+ size_t i = 1;
while( s1[i] && (tolower( s1[i] ) == s2[i]) )
i++;
if( !s1[i] && !s2[i] ) {
- mangled_len -= i;
- raw_len -= i;
+ /* Truncate at the '.' */
+ *s1 = '\0';
+ *s2 = '\0';
}
}
/* Allocate a new cache entry. If the allocation fails, just return. */
- i = sizeof( ubi_cacheEntry ) + mangled_len + raw_len + 2;
- new_entry = malloc( i );
- if( !new_entry )
- return;
-
- /* Fill the new cache entry, and add it to the cache. */
- s1 = (char *)(new_entry + 1);
- s2 = (char *)&(s1[mangled_len + 1]);
- memcpy( s1, mangled_name, mangled_len );
- s1[mangled_len] = '\0';
- memcpy( s2, raw_name, raw_len );
- s2[raw_len] = '\0';
- ubi_cachePut( mangled_cache, i, new_entry, s1 );
+ data_val.dptr = raw_name;
+ data_val.dsize = strlen(raw_name)+1;
+ if (tdb_store_bystring(tdb_mangled_cache, mangled_name_key, data_val, TDB_REPLACE) != 0) {
+ DEBUG(0,("cache_mangled_name: Error storing entry %s -> %s\n", mangled_name_key, raw_name));
+ } else {
+ DEBUG(5,("cache_mangled_name: Stored entry %s -> %s\n", mangled_name_key, raw_name));
+ }
}
/* ************************************************************************** **
static BOOL check_cache( char *s, size_t maxlen )
{
- ubi_cacheEntryPtr FoundPtr;
- char *ext_start = NULL;
- char *found_name;
- char *saved_ext = NULL;
+ TDB_DATA data_val;
+ char *ext_start = NULL;
+ char *saved_ext = NULL;
/* If the cache isn't initialized, give up. */
- if( !mc_initialized )
+ if( !tdb_mangled_cache )
return( False );
- FoundPtr = ubi_cacheGet( mangled_cache, (ubi_trItemPtr)s );
+ data_val = tdb_fetch_bystring(tdb_mangled_cache, s);
/* If we didn't find the name *with* the extension, try without. */
- if( !FoundPtr ) {
+ if(data_val.dptr == NULL || data_val.dsize == 0) {
ext_start = strrchr( s, '.' );
if( ext_start ) {
if((saved_ext = strdup(ext_start)) == NULL)
return False;
*ext_start = '\0';
- FoundPtr = ubi_cacheGet( mangled_cache, (ubi_trItemPtr)s );
+ data_val = tdb_fetch_bystring(tdb_mangled_cache, s);
/*
* At this point s is the name without the
* extension. We re-add the extension if saved_ext
}
/* Okay, if we haven't found it we're done. */
- if( !FoundPtr ) {
+ if(data_val.dptr == NULL || data_val.dsize == 0) {
if(saved_ext) {
/* Replace the saved_ext as it was truncated. */
(void)safe_strcat( s, saved_ext, maxlen );
}
/* If we *did* find it, we need to copy it into the string buffer. */
- found_name = (char *)(FoundPtr + 1);
- found_name += (strlen( found_name ) + 1);
-
- (void)safe_strcpy( s, found_name, maxlen );
+ (void)safe_strcpy( s, data_val.dptr, maxlen );
if( saved_ext ) {
/* Replace the saved_ext as it was truncated. */
(void)safe_strcat( s, saved_ext, maxlen );
SAFE_FREE(saved_ext);
}
-
+ SAFE_FREE(data_val.dptr);
return( True );
}
{
mangle_reset();
+ /* Create the in-memory tdb using our custom hash function. */
+ tdb_mangled_cache = tdb_open_ex("mangled_cache", 1031, TDB_INTERNAL,
+ (O_RDWR|O_CREAT), 0644, NULL, fast_string_hash);
+
return &mangle_fns;
}
git.samba.org / amitay / samba.git / commitdiff