/* 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 3 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, see <http://www.gnu.org/licenses/>. */ #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 }, { "posix", posix_mangle_init }, /*{ "tdb", mangle_tdb_init }, */ { NULL, NULL } }; /* initialise the mangling subsystem */ static void mangle_init(void) { int i; const 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(); } 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); } /* 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); } 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); } bool mangle_must_mangle(const char *fname, const struct share_params *p) { if (!lp_manglednames(p)) { return False; } return mangle_fns->must_mangle(fname, 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_lookup_name_from_8_3(TALLOC_CTX *ctx, const char *in, char **out, /* talloced on the given context. */ const struct share_params *p) { return mangle_fns->lookup_name_from_8_3(ctx, in, out, p); } /* mangle a long filename to a 8.3 name. Return True if we did mangle the name (ie. out is filled in). False on error. JRA. */ bool name_to_8_3(const char *in, char out[13], bool cache83, const struct share_params *p) { memset(out,'\0',13); /* name mangling can be disabled for speed, in which case we just truncate the string */ if (!lp_manglednames(p)) { safe_strcpy(out,in,12); return True; } return mangle_fns->name_to_8_3(in, out, cache83, lp_defaultcase(p->service), p); }