/*
- Unix SMB/Netbios implementation.
- Version 1.9.
- Name mangling
- Copyright (C) Andrew Tridgell 1992-1998
+ Unix SMB/CIFS implementation.
+ Name mangling interface
+ Copyright (C) Andrew Tridgell 2002
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-/* -------------------------------------------------------------------------- **
- * Notable problems...
- *
- * March/April 1998 CRH
- * - Many of the functions in this module overwrite string buffers passed to
- * them. This causes a variety of problems and is, generally speaking,
- * dangerous and scarry. See the kludge notes in name_map_mangle()
- * below.
- * - It seems that something is calling name_map_mangle() twice. The
- * first call is probably some sort of test. Names which contain
- * illegal characters are being doubly mangled. I'm not sure, but
- * I'm guessing the problem is in server.c.
- *
- * -------------------------------------------------------------------------- **
- */
-
-/* -------------------------------------------------------------------------- **
- * History...
- *
- * March/April 1998 CRH
- * Updated a bit. Rewrote is_mangled() to be a bit more selective.
- * Rewrote the mangled name cache. Added comments here and there.
- * &c.
- * -------------------------------------------------------------------------- **
- */
-
#include "includes.h"
-
-/* -------------------------------------------------------------------------- **
- * External Variables...
- */
-
-extern int DEBUGLEVEL; /* Global debug level. */
-extern int case_default; /* Are conforming 8.3 names all upper or lower? */
-extern BOOL case_mangle; /* If true, all chars in 8.3 should be same case. */
-
-/* -------------------------------------------------------------------------- **
- * Other stuff...
- *
- * magic_char - This is the magic char used for mangling. It's
- * global. There is a call to lp_magicchar() in server.c
- * that is used to override the initial value.
- *
- * MANGLE_BASE - This is the number of characters we use for name mangling.
- *
- * basechars - The set characters used for name mangling. This
- * is static (scope is this file only).
- *
- * mangle() - Macro used to select a character from basechars (i.e.,
- * mangle(n) will return the nth digit, modulo MANGLE_BASE).
- *
- * chartest - array 0..255. The index range is the set of all possible
- * values of a byte. For each byte value, the content is a
- * two nibble pair. See BASECHAR_MASK and ILLEGAL_MASK,
- * below.
- *
- * ct_initialized - False until the chartest array has been initialized via
- * a call to init_chartest().
- *
- * BASECHAR_MASK - Masks the upper nibble of a one-byte value.
- *
- * ILLEGAL_MASK - Masks the lower nibble of a one-byte value.
- *
- * isbasecahr() - Given a character, check the chartest array to see
- * if that character is in the basechars set. This is
- * faster than using strchr().
- *
- * isillegal() - Given a character, check the chartest array to see
- * if that character is in the illegal characters set.
- * This is faster than using strchr().
- *
- * 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 = '~';
-
-static char basechars[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_-!@#$%";
-#define MANGLE_BASE (sizeof(basechars)/sizeof(char)-1)
-
-static unsigned char chartest[256] = { 0 };
-static BOOL ct_initialized = False;
-
-#define mangle(V) ((char)(basechars[(V) % MANGLE_BASE]))
-#define BASECHAR_MASK 0xf0
-#define ILLEGAL_MASK 0x0f
-#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 0
-#define MANGLED_CACHE_MAX_MEMORY 16384
-
-
-/* -------------------------------------------------------------------------- **
- * Functions...
- */
-
-/* ************************************************************************** **
- * Initialize the static character test array.
- *
- * Input: none
- *
- * Output: none
- *
- * Notes: This function changes (loads) the contents of the <chartest>
- * array. The scope of <chartest> is this file.
- *
- * ************************************************************************** **
- */
-static void init_chartest( void )
- {
- char *illegalchars = "*\\/?<>|\":";
- unsigned char *s;
-
- memset( (char *)chartest, '\0', 256 );
-
- for( s = (unsigned char *)illegalchars; *s; s++ )
- chartest[*s] = ILLEGAL_MASK;
-
- for( s = (unsigned char *)basechars; *s; s++ )
- chartest[*s] |= BASECHAR_MASK;
-
- ct_initialized = True;
- } /* init_chartest */
-
-/* ************************************************************************** **
- * Return True if a name is a special msdos reserved name.
- *
- * Input: fname - String containing the name to be tested.
- *
- * Output: True, if the name matches one of the list of reserved names.
- *
- * Notes: This is a static function called by is_8_3(), below.
- *
- * ************************************************************************** **
- */
-static BOOL is_reserved_msdos( char *fname )
- {
- char upperFname[13];
- char *p;
-
- StrnCpy (upperFname, fname, 12);
-
- /* lpt1.txt and con.txt etc are also illegal */
- p = strchr(upperFname,'.');
- if( p )
- *p = '\0';
-
- strupper( upperFname );
- p = upperFname + 1;
- switch( upperFname[0] )
- {
- case 'A':
- if( 0 == strcmp( p, "UX" ) )
- return( True );
- break;
- case 'C':
- if( (0 == strcmp( p, "LOCK$" ))
- || (0 == strcmp( p, "ON" ))
- || (0 == strcmp( p, "OM1" ))
- || (0 == strcmp( p, "OM2" ))
- || (0 == strcmp( p, "OM3" ))
- || (0 == strcmp( p, "OM4" ))
- )
- return( True );
- break;
- case 'L':
- if( (0 == strcmp( p, "PT1" ))
- || (0 == strcmp( p, "PT2" ))
- || (0 == strcmp( p, "PT3" ))
- )
- return( True );
- break;
- case 'N':
- if( 0 == strcmp( p, "UL" ) )
- return( True );
- break;
- case 'P':
- if( 0 == strcmp( p, "RN" ) )
- return( True );
- break;
- }
-
- return( False );
- } /* is_reserved_msdos */
-
-/* ************************************************************************** **
- * Determine whether or not a given name contains illegal characters, even
- * long names.
- *
- * Input: name - The name to be tested.
- *
- * Output: True if an illegal character was found in <name>, else False.
- *
- * Notes: This is used to test a name on the host system, long or short,
- * for characters that would be illegal on most client systems,
- * particularly DOS and Windows systems. Unix and AmigaOS, for
- * example, allow a filenames which contain such oddities as
- * quotes ("). If a name is found which does contain an illegal
- * character, it is mangled even if it conforms to the 8.3
- * format.
- *
- * ************************************************************************** **
- */
-static BOOL is_illegal_name( char *name )
- {
- unsigned char *s;
- int skip;
-
- if( !name )
- return( True );
-
- if( !ct_initialized )
- init_chartest();
-
- s = (unsigned char *)name;
- while( *s )
- {
- skip = skip_multibyte_char( *s );
- if( skip != 0 )
- {
- s += skip;
- }
- else
- {
- if( isillegal( *s ) )
- return( True );
- else
- s++;
- }
- }
-
- return( False );
- } /* is_illegal_name */
-
-/* ************************************************************************** **
- * Return True if the name *could be* a mangled name.
- *
- * Input: s - A path name - in UNIX pathname format.
- *
- * Output: True if the name matches the pattern described below in the
- * notes, else False.
- *
- * Notes: The input name is *not* tested for 8.3 compliance. This must be
- * done separately. This function returns true if the name contains
- * a magic character followed by excactly two characters from the
- * basechars list (above), which in turn are followed either by the
- * nul (end of string) byte or a dot (extension) or by a '/' (end of
- * a directory name).
- *
- * ************************************************************************** **
- */
-BOOL is_mangled( char *s )
- {
- char *magic;
-
- if( !ct_initialized )
- init_chartest();
-
- magic = strchr( s, magic_char );
- while( magic && magic[1] && magic[2] ) /* 3 chars, 1st is magic. */
- {
- if( ('.' == magic[3] || '/' == magic[3] || !(magic[3])) /* Ends with '.' or nul or '/' ? */
- && isbasechar( toupper(magic[1]) ) /* is 2nd char basechar? */
- && isbasechar( toupper(magic[2]) ) ) /* is 3rd char basechar? */
- return( True ); /* If all above, then true, */
- magic = strchr( magic+1, magic_char ); /* else seek next magic. */
- }
- return( False );
- } /* is_mangled */
-
-/* ************************************************************************** **
- * Return True if the name is a valid DOS name in 8.3 DOS format.
- *
- * Input: fname - File name to be checked.
- * check_case - If True, and if case_mangle is True, then the
- * name will be checked to see if all characters
- * are the correct case. See case_mangle and
- * case_default above.
- *
- * Output: True if the name is a valid DOS name, else FALSE.
- *
- * ************************************************************************** **
- */
-BOOL is_8_3( char *fname, BOOL check_case )
- {
- int len;
- int l;
- int skip;
- char *p;
- char *dot_pos;
- char *slash_pos = strrchr( fname, '/' );
-
- /* If there is a directory path, skip it. */
- if( slash_pos )
- fname = slash_pos + 1;
- len = strlen( fname );
-
- DEBUG( 5, ( "Checking %s for 8.3\n", fname ) );
-
- /* Can't be 0 chars or longer than 12 chars */
- if( (len == 0) || (len > 12) )
- return( False );
-
- /* Mustn't be an MS-DOS Special file such as lpt1 or even lpt1.txt */
- if( is_reserved_msdos( fname ) )
- return( False );
-
- /* Check that all characters are the correct case, if asked to do so. */
- if( check_case && case_mangle )
- {
- switch( case_default )
- {
- case CASE_LOWER:
- if( strhasupper( fname ) )
- return(False);
- break;
- case CASE_UPPER:
- if( strhaslower( fname ) )
- return(False);
- break;
- }
- }
-
- /* Can't contain invalid dos chars */
- /* Windows use the ANSI charset.
- But filenames are translated in the PC charset.
- This Translation may be more or less relaxed depending
- the Windows application. */
-
- /* %%% A nice improvment to name mangling would be to translate
- filename to ANSI charset on the smb server host */
-
- p = fname;
- dot_pos = NULL;
- while( *p )
- {
- if( (skip = skip_multibyte_char( *p )) != 0 )
- p += skip;
- else
- {
- if( *p == '.' && !dot_pos )
- dot_pos = (char *)p;
- else
- if( !isdoschar( *p ) )
- return( False );
- p++;
- }
- }
-
- /* no dot and less than 9 means OK */
- if( !dot_pos )
- return( len <= 8 );
-
- l = PTR_DIFF( dot_pos, fname );
-
- /* base must be at least 1 char except special cases . and .. */
- if( l == 0 )
- return( 0 == strcmp( fname, "." ) || 0 == strcmp( fname, ".." ) );
-
- /* base can't be greater than 8 */
- if( l > 8 )
- return( False );
-
- /* see smb.conf(5) for a description of the 'strip dot' parameter. */
- if( lp_strip_dot()
- && len - l == 1
- && !strchr( dot_pos + 1, '.' ) )
- {
- *dot_pos = 0;
- return( True );
- }
-
- /* extension must be between 1 and 3 */
- if( (len - l < 2 ) || (len - l > 4) )
- return( False );
-
- /* extensions may not have a dot */
- if( strchr( dot_pos+1, '.' ) )
- return( False );
-
- /* must be in 8.3 format */
- return( True );
- } /* is_8_3 */
-
-
-/* ************************************************************************** **
- * 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 ) );
- } /* cache_compare */
-
-/* ************************************************************************** **
- * 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 )
- {
- free( WarrenZevon );
- } /* cache_free_entry */
-
-/* ************************************************************************** **
- * 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.
- *
- * ************************************************************************** **
- */
-void reset_mangled_cache( 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() );
- */
- } /* reset_mangled_cache */
-
-
-/* ************************************************************************** **
- * 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 )
- {
- ubi_cacheEntryPtr new_entry;
- char *s1;
- char *s2;
- size_t mangled_len;
- size_t raw_len;
- size_t i;
-
- /* If the cache isn't initialized, give up. */
- if( !mc_initialized )
- return;
-
- /* Init the string lengths. */
- mangled_len = strlen( mangled_name );
- raw_len = strlen( raw_name );
-
- /* See if the extensions are unmangled. If so, store the entry
- * without the extension, thus creating a "group" reverse map.
- */
- s1 = strrchr( mangled_name, '.' );
- if( s1 && (s2 = strrchr( raw_name, '.' )) )
- {
- i = 1;
- while( s1[i] && (tolower( s1[1] ) == s2[i]) )
- i++;
- if( !s1[i] && !s2[i] )
- {
- mangled_len -= i;
- raw_len -= i;
- }
- }
-
- /* 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]);
- (void)StrnCpy( s1, mangled_name, mangled_len );
- (void)StrnCpy( s2, raw_name, raw_len );
- ubi_cachePut( mangled_cache, i, new_entry, s1 );
- } /* cache_mangled_name */
-
-/* ************************************************************************** **
- * Check for a name on the mangled name stack
- *
- * Input: s - Input *and* output string buffer.
- *
- * Output: True if the name was found in the cache, else False.
- *
- * Notes: If a reverse map is found, the function will overwrite the string
- * space indicated by the input pointer <s>. This is frightening.
- * It should be rewritten to return NULL if the long name was not
- * found, and a pointer to the long name if it was found.
- *
- * ************************************************************************** **
- */
-
-BOOL check_mangled_cache( char *s )
+static struct mangle_fns *mangle_fns;
+
+/* this allows us to add more mangling backends */
+static const struct {
+ const char *name;
+ struct mangle_fns *(*init_fn)(void);
+} mangle_backends[] = {
+ { "hash", mangle_hash_init },
+ { "hash2", mangle_hash2_init },
+ { "posix", posix_mangle_init },
+ /*{ "tdb", mangle_tdb_init }, */
+ { NULL, NULL }
+};
+
+/*
+ initialise the mangling subsystem
+*/
+static void mangle_init(void)
{
- ubi_cacheEntryPtr FoundPtr;
- char *ext_start = NULL;
- char *found_name;
- char *saved_ext = NULL;
-
- /* If the cache isn't initialized, give up. */
- if( !mc_initialized )
- return( False );
-
- FoundPtr = ubi_cacheGet( mangled_cache, (ubi_trItemPtr)s );
-
- /* If we didn't find the name *with* the extension, try without. */
- if( !FoundPtr )
- {
- 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 );
- /*
- * At this point s is the name without the
- * extension. We re-add the extension if saved_ext
- * is not null, before freeing saved_ext.
- */
- }
- }
+ int i;
+ const char *method;
- /* Okay, if we haven't found it we're done. */
- if( !FoundPtr )
- {
- if(saved_ext)
- {
- /* Replace the saved_ext as it was truncated. */
- (void)pstrcat( s, saved_ext );
- free(saved_ext);
- }
- return( False );
- }
+ if (mangle_fns)
+ return;
- /* 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);
+ method = lp_mangling_method();
- DEBUG( 3, ("Found %s on mangled stack ", s) );
-
- (void)pstrcpy( s, found_name );
- if( saved_ext )
- {
- /* Replace the saved_ext as it was truncated. */
- (void)pstrcat( s, saved_ext );
- free(saved_ext);
- }
-
- DEBUG( 3, ("as %s\n", s) );
-
- return( True );
-} /* check_mangled_cache */
-
-
-/* ************************************************************************** **
- * Used only in do_fwd_mangled_map(), below.
- * ************************************************************************** **
- */
-static char *map_filename( char *s, /* This is null terminated */
- char *pattern, /* This isn't. */
- int len ) /* This is the length of pattern. */
- {
- static pstring matching_bit; /* The bit of the string which matches */
- /* a * in pattern if indeed there is a * */
- char *sp; /* Pointer into s. */
- char *pp; /* Pointer into p. */
- char *match_start; /* Where the matching bit starts. */
- pstring pat;
-
- StrnCpy( pat, pattern, len ); /* Get pattern into a proper string! */
- pstrcpy( matching_bit, "" ); /* Match but no star gets this. */
- pp = pat; /* Initialize the pointers. */
- sp = s;
-
- if( strequal(s, ".") || strequal(s, ".."))
- {
- return NULL; /* Do not map '.' and '..' */
- }
+ /* find the first mangling method that manages to initialise and
+ matches the "mangling method" parameter */
+ for (i=0; mangle_backends[i].name && !mangle_fns; i++) {
+ if (!method || !*method || strcmp(method, mangle_backends[i].name) == 0) {
+ mangle_fns = mangle_backends[i].init_fn();
+ }
+ }
- if( (len == 1) && (*pattern == '*') )
- {
- return NULL; /* Impossible, too ambiguous for */
- } /* words! */
+ if (!mangle_fns) {
+ DEBUG(0,("Failed to initialise mangling system '%s'\n", method));
+ exit_server("mangling init failed");
+ }
+}
- while( (*sp) /* Not the end of the string. */
- && (*pp) /* Not the end of the pattern. */
- && (*sp == *pp) /* The two match. */
- && (*pp != '*') ) /* No wildcard. */
- {
- sp++; /* Keep looking. */
- pp++;
- }
- if( !*sp && !*pp ) /* End of pattern. */
- return( matching_bit ); /* Simple match. Return empty string. */
+/*
+ reset the cache. This is called when smb.conf has been reloaded
+*/
+void mangle_reset_cache(void)
+{
+ mangle_init();
+ mangle_fns->reset();
+}
- if( *pp == '*' )
- {
- pp++; /* Always interrested in the chacter */
- /* after the '*' */
- if( !*pp ) /* It is at the end of the pattern. */
- {
- StrnCpy( matching_bit, s, sp-s );
- return( matching_bit );
- }
- else
- {
- /* The next character in pattern must match a character further */
- /* along s than sp so look for that character. */
- match_start = sp;
- while( (*sp) /* Not the end of s. */
- && (*sp != *pp) ) /* Not the same */
- sp++; /* Keep looking. */
- if( !*sp ) /* Got to the end without a match. */
- {
- return( NULL );
- } /* Still hope for a match. */
- else
- {
- /* Now sp should point to a matching character. */
- StrnCpy(matching_bit, match_start, sp-match_start);
- /* Back to needing a stright match again. */
- while( (*sp) /* Not the end of the string. */
- && (*pp) /* Not the end of the pattern. */
- && (*sp == *pp) ) /* The two match. */
- {
- sp++; /* Keep looking. */
- pp++;
- }
- if( !*sp && !*pp ) /* Both at end so it matched */
- return( matching_bit );
- else
- return( NULL );
- }
- }
- }
- return( NULL ); /* No match. */
- } /* map_filename */
+void mangle_change_to_posix(void)
+{
+ mangle_fns = NULL;
+ lp_set_mangling_method("posix");
+ mangle_reset_cache();
+}
+/*
+ see if a filename has come out of our mangling code
+*/
+BOOL mangle_is_mangled(const char *s, const struct share_params *p)
+{
+ return mangle_fns->is_mangled(s, p);
+}
-/* ************************************************************************** **
- * MangledMap is a series of name pairs in () separated by spaces.
- * If s matches the first of the pair then the name given is the
- * second of the pair. A * means any number of any character and if
- * present in the second of the pair as well as the first the
- * matching part of the first string takes the place of the * in the
- * second.
- *
- * I wanted this so that we could have RCS files which can be used
- * by UNIX and DOS programs. My mapping string is (RCS rcs) which
- * converts the UNIX RCS file subdirectory to lowercase thus
- * preventing mangling.
- *
- * (I think Andrew wrote the above, but I'm not sure. -- CRH)
- *
- * See 'mangled map' in smb.conf(5).
- *
- * ************************************************************************** **
- */
-static void do_fwd_mangled_map(char *s, char *MangledMap)
- {
- char *start=MangledMap; /* Use this to search for mappings. */
- char *end; /* Used to find the end of strings. */
- char *match_string;
- pstring new_string; /* Make up the result here. */
- char *np; /* Points into new_string. */
+/*
+ see if a filename matches the rules of a 8.3 filename
+*/
+BOOL mangle_is_8_3(const char *fname, BOOL check_case,
+ const struct share_params *p)
+{
+ return mangle_fns->is_8_3(fname, check_case, False, p);
+}
- DEBUG( 5, ("Mangled Mapping '%s' map '%s'\n", s, MangledMap) );
- while( *start )
- {
- while( (*start) && (*start != '(') )
- start++;
- if( !*start )
- continue; /* Always check for the end. */
- start++; /* Skip the ( */
- end = start; /* Search for the ' ' or a ')' */
- DEBUG( 5, ("Start of first in pair '%s'\n", start) );
- while( (*end) && !((*end == ' ') || (*end == ')')) )
- end++;
- if( !*end )
- {
- start = end;
- continue; /* Always check for the end. */
- }
- DEBUG( 5, ("End of first in pair '%s'\n", end) );
- if( (match_string = map_filename( s, start, end-start )) )
- {
- DEBUG( 5, ("Found a match\n") );
- /* Found a match. */
- start = end + 1; /* Point to start of what it is to become. */
- DEBUG( 5, ("Start of second in pair '%s'\n", start) );
- end = start;
- np = new_string;
- while( (*end) /* Not the end of string. */
- && (*end != ')') /* Not the end of the pattern. */
- && (*end != '*') ) /* Not a wildcard. */
- *np++ = *end++;
- if( !*end )
- {
- start = end;
- continue; /* Always check for the end. */
- }
- if( *end == '*' )
- {
- pstrcpy( np, match_string );
- np += strlen( match_string );
- end++; /* Skip the '*' */
- while( (*end) /* Not the end of string. */
- && (*end != ')') /* Not the end of the pattern. */
- && (*end != '*') ) /* Not a wildcard. */
- *np++ = *end++;
- }
- if( !*end )
- {
- start = end;
- continue; /* Always check for the end. */
- }
- *np++ = '\0'; /* NULL terminate it. */
- DEBUG(5,("End of second in pair '%s'\n", end));
- pstrcpy( s, new_string ); /* Substitute with the new name. */
- DEBUG( 5, ("s is now '%s'\n", s) );
- }
- start = end; /* Skip a bit which cannot be wanted anymore. */
- start++;
- }
- } /* do_fwd_mangled_map */
+BOOL mangle_is_8_3_wildcards(const char *fname, BOOL check_case,
+ const struct share_params *p)
+{
+ return mangle_fns->is_8_3(fname, check_case, True, p);
+}
+
+/*
+ try to reverse map a 8.3 name to the original filename. This doesn't have to
+ always succeed, as the directory handling code in smbd will scan the directory
+ looking for a matching name if it doesn't. It should succeed most of the time
+ or there will be a huge performance penalty
+*/
+BOOL mangle_check_cache(char *s, size_t maxlen,
+ const struct share_params *p)
+{
+ return mangle_fns->check_cache(s, maxlen, p);
+}
-/*****************************************************************************
- * do the actual mangling to 8.3 format
- * the buffer must be able to hold 13 characters (including the null)
- *****************************************************************************
+/*
+ map a long filename to a 8.3 name.
*/
-void mangle_name_83( char *s)
- {
- int csum;
- char *p;
- char extension[4];
- char base[9];
- int baselen = 0;
- int extlen = 0;
- int skip;
-
- extension[0] = 0;
- base[0] = 0;
-
- p = strrchr(s,'.');
- if( p && (strlen(p+1) < (size_t)4) )
- {
- BOOL all_normal = ( strisnormal(p+1) ); /* XXXXXXXXX */
-
- if( all_normal && p[1] != 0 )
- {
- *p = 0;
- csum = str_checksum( s );
- *p = '.';
- }
- else
- csum = str_checksum(s);
- }
- else
- csum = str_checksum(s);
-
- strupper( s );
-
- DEBUG( 5, ("Mangling name %s to ",s) );
-
- if( p )
- {
- if( p == s )
- safe_strcpy( extension, "___", 3 );
- else
- {
- *p++ = 0;
- while( *p && extlen < 3 )
- {
- skip = skip_multibyte_char( *p );
- switch( skip )
- {
- case 2:
- if( extlen < 2 )
- {
- extension[extlen++] = p[0];
- extension[extlen++] = p[1];
- }
- else
- {
- extension[extlen++] = mangle( (unsigned char)*p );
- }
- p += 2;
- break;
- case 1:
- extension[extlen++] = p[0];
- p++;
- break;
- default:
- if( isdoschar (*p) && *p != '.' )
- extension[extlen++] = p[0];
- p++;
- break;
- }
- }
- extension[extlen] = 0;
- }
- }
-
- p = s;
-
- while( *p && baselen < 5 )
- {
- skip = skip_multibyte_char(*p);
- switch( skip )
- {
- case 2:
- if( baselen < 4 )
- {
- base[baselen++] = p[0];
- base[baselen++] = p[1];
- }
- else
- {
- base[baselen++] = mangle( (unsigned char)*p );
- }
- p += 2;
- break;
- case 1:
- base[baselen++] = p[0];
- p++;
- break;
- default:
- if( isdoschar( *p ) && *p != '.' )
- base[baselen++] = p[0];
- p++;
- break;
- }
- }
- base[baselen] = 0;
-
- csum = csum % (MANGLE_BASE*MANGLE_BASE);
- (void)slprintf(s, 12, "%s%c%c%c",
- base, magic_char, mangle( csum/MANGLE_BASE ), mangle( csum ) );
-
- if( *extension )
- {
- (void)pstrcat( s, "." );
- (void)pstrcat( s, extension );
- }
-
- DEBUG( 5, ( "%s\n", s ) );
-
- } /* mangle_name_83 */
-
-/*****************************************************************************
- * Convert a filename to DOS format. Return True if successful.
- *
- * Input: OutName - Source *and* destination buffer.
- *
- * NOTE that OutName must point to a memory space that
- * is at least 13 bytes in size!
- *
- * need83 - If False, name mangling will be skipped unless the
- * name contains illegal characters. Mapping will still
- * be done, if appropriate. This is probably used to
- * signal that a client does not require name mangling,
- * thus skipping the name mangling even on shares which
- * have name-mangling turned on.
- * cache83 - If False, the mangled name cache will not be updated.
- * This is usually used to prevent that we overwrite
- * a conflicting cache entry prematurely, i.e. before
- * we know whether the client is really interested in the
- * current name. (See PR#13758). UKD.
- * snum - Share number. This identifies the share in which the
- * name exists.
- *
- * Output: Returns False only if the name wanted mangling but the share does
- * not have name mangling turned on.
- *
- * ****************************************************************************
- */
-BOOL name_map_mangle(char *OutName, BOOL need83, BOOL cache83, int snum)
+void mangle_map(pstring OutName, BOOL need83, BOOL cache83,
+ const struct share_params *p)
{
- char *map;
- DEBUG(5,("name_map_mangle( %s, need83 = %s, cache83 = %s, %d )\n", OutName,
- need83 ? "TRUE" : "FALSE", cache83 ? "TRUE" : "FALSE", snum));
-
-#ifdef MANGLE_LONG_FILENAMES
- if( !need83 && is_illegal_name(OutName) )
- need83 = True;
-#endif
-
- /* apply any name mappings */
- map = lp_mangled_map(snum);
-
- if (map && *map) {
- do_fwd_mangled_map( OutName, map );
- }
-
- /* check if it's already in 8.3 format */
- if (need83 && !is_8_3(OutName, True)) {
- char *tmp = NULL;
-
- if (!lp_manglednames(snum)) {
- return(False);
- }
-
- /* mangle it into 8.3 */
- if (cache83)
- tmp = strdup(OutName);
-
- mangle_name_83(OutName);
-
- if(tmp != NULL) {
- cache_mangled_name(OutName, tmp);
- free(tmp);
+ /* name mangling can be disabled for speed, in which case
+ we just truncate the string */
+ if (!lp_manglednames(p)) {
+ if (need83) {
+ string_truncate(OutName, 12);
}
+ return;
}
- DEBUG(5,("name_map_mangle() ==> [%s]\n", OutName));
- return(True);
-} /* name_map_mangle */
-
+ /* invoke the inane "mangled map" code */
+ mangle_map_filename(OutName, p);
+ mangle_fns->name_map(OutName, need83, cache83, lp_defaultcase(p->service), p);
+}
git.samba.org / sfrench / samba-autobuild / .git / blobdiff