2 Unix SMB/CIFS implementation.
3 Name mangling interface
4 Copyright (C) Andrew Tridgell 2002
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 static struct mangle_fns *mangle_fns;
25 /* this allows us to add more mangling backends */
28 struct mangle_fns *(*init_fn)(void);
29 } mangle_backends[] = {
30 { "hash", mangle_hash_init },
35 initialise the mangling subsystem
37 static void mangle_init(void)
42 if (mangle_fns) return;
44 method = lp_mangling_method();
46 /* find the first mangling method that manages to initialise and
47 matches the "mangling method" parameter */
48 for (i=0; mangle_backends[i].name && !mangle_fns; i++) {
49 if (!method || !*method || strcmp(method, mangle_backends[i].name) == 0) {
50 mangle_fns = mangle_backends[i].init_fn();
55 DEBUG(0,("Failed to initialise mangling system '%s'\n", method));
56 exit_server("mangling init failed");
62 reset the cache. This is called when smb.conf has been reloaded
64 void mangle_reset_cache(void)
68 return mangle_fns->reset();
72 see if a filename has come out of our mangling code
74 BOOL mangle_is_mangled(const char *s)
76 return mangle_fns->is_mangled(s);
80 see if a filename matches the rules of a 8.3 filename
82 BOOL mangle_is_8_3(const char *fname, BOOL check_case)
84 return mangle_fns->is_8_3(fname, check_case);
88 try to reverse map a 8.3 name to the original filename. This doesn't have to
89 always succeed, as the directory handling code in smbd will scan the directory
90 looking for a matching name if it doesn't. It should succeed most of the time
91 or there will be a huge performance penalty
93 BOOL mangle_check_cache(char *s)
95 return mangle_fns->check_cache(s);
99 map a long filename to a 8.3 name.
101 BOOL mangle_map(char *OutName, BOOL need83, BOOL cache83, int snum)
103 /* name mangling can be disabled for speed, in which case
104 we just truncate the string */
105 if (!lp_manglednames(snum)) {
107 string_truncate(OutName, 12);
112 /* invoke the inane "mangled map" code */
113 mangle_map_filename(OutName, snum);
115 return mangle_fns->name_map(OutName, need83, cache83);