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Diffstat (limited to 'source/smbd/mangle.c')
-rw-r--r-- | source/smbd/mangle.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/source/smbd/mangle.c b/source/smbd/mangle.c new file mode 100644 index 00000000000..c5d7582c033 --- /dev/null +++ b/source/smbd/mangle.c @@ -0,0 +1,124 @@ +/* + 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 + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#include "includes.h" + +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 }, + /*{ "tdb", mangle_tdb_init }, */ + { NULL, NULL } +}; + +/* + initialise the mangling subsystem +*/ +static void mangle_init(void) +{ + int i; + char *method; + + if (mangle_fns) + return; + + method = lp_mangling_method(); + + /* 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 (!mangle_fns) { + DEBUG(0,("Failed to initialise mangling system '%s'\n", method)); + exit_server("mangling init failed"); + } +} + + +/* + reset the cache. This is called when smb.conf has been reloaded +*/ +void mangle_reset_cache(void) +{ + mangle_init(); + + mangle_fns->reset(); +} + +/* + see if a filename has come out of our mangling code +*/ +BOOL mangle_is_mangled(const char *s) +{ + return mangle_fns->is_mangled(s); +} + +/* + see if a filename matches the rules of a 8.3 filename +*/ +BOOL mangle_is_8_3(const char *fname, BOOL check_case) +{ + return mangle_fns->is_8_3(fname, check_case, False); +} + +BOOL mangle_is_8_3_wildcards(const char *fname, BOOL check_case) +{ + return mangle_fns->is_8_3(fname, check_case, True); +} + +/* + 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) +{ + return mangle_fns->check_cache(s); +} + +/* + map a long filename to a 8.3 name. + */ + +void mangle_map(pstring OutName, BOOL need83, BOOL cache83, int snum) +{ + /* name mangling can be disabled for speed, in which case + we just truncate the string */ + if (!lp_manglednames(snum)) { + if (need83) { + string_truncate(OutName, 12); + } + return; + } + + /* invoke the inane "mangled map" code */ + mangle_map_filename(OutName, snum); + mangle_fns->name_map(OutName, need83, cache83); +} |