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831 lines
22 KiB
C
831 lines
22 KiB
C
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/*
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Unix SMB/CIFS implementation.
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tdb utility functions
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Copyright (C) Andrew Tridgell 1992-1998
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "includes.h"
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#include <fnmatch.h>
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/* these are little tdb utility functions that are meant to make
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dealing with a tdb database a little less cumbersome in Samba */
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static SIG_ATOMIC_T gotalarm;
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/***************************************************************
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Signal function to tell us we timed out.
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****************************************************************/
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static void gotalarm_sig(void)
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{
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gotalarm = 1;
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}
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/***************************************************************
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Make a TDB_DATA and keep the const warning in one place
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****************************************************************/
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static TDB_DATA make_tdb_data(const char *dptr, size_t dsize)
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{
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TDB_DATA ret;
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ret.dptr = dptr;
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ret.dsize = dsize;
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return ret;
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}
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/****************************************************************************
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Lock a chain with timeout (in seconds).
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****************************************************************************/
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static int tdb_chainlock_with_timeout_internal( TDB_CONTEXT *tdb, TDB_DATA key, unsigned int timeout, int rw_type)
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{
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/* Allow tdb_chainlock to be interrupted by an alarm. */
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int ret;
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gotalarm = 0;
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tdb_set_lock_alarm(&gotalarm);
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if (timeout) {
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CatchSignal(SIGALRM, SIGNAL_CAST gotalarm_sig);
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alarm(timeout);
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}
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if (rw_type == F_RDLCK)
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ret = tdb_chainlock_read(tdb, key);
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else
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ret = tdb_chainlock(tdb, key);
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if (timeout) {
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alarm(0);
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CatchSignal(SIGALRM, SIGNAL_CAST SIG_IGN);
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if (gotalarm) {
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DEBUG(0,("tdb_chainlock_with_timeout_internal: alarm (%u) timed out for key %s in tdb %s\n",
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timeout, key.dptr, tdb->name ));
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/* TODO: If we time out waiting for a lock, it might
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* be nice to use F_GETLK to get the pid of the
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* process currently holding the lock and print that
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* as part of the debugging message. -- mbp */
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return -1;
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}
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}
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return ret;
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}
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/****************************************************************************
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Write lock a chain. Return -1 if timeout or lock failed.
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****************************************************************************/
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int tdb_chainlock_with_timeout( TDB_CONTEXT *tdb, TDB_DATA key, unsigned int timeout)
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{
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return tdb_chainlock_with_timeout_internal(tdb, key, timeout, F_WRLCK);
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}
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/****************************************************************************
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Lock a chain by string. Return -1 if timeout or lock failed.
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****************************************************************************/
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int tdb_lock_bystring(TDB_CONTEXT *tdb, const char *keyval, unsigned int timeout)
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{
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TDB_DATA key = make_tdb_data(keyval, strlen(keyval)+1);
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return tdb_chainlock_with_timeout_internal(tdb, key, timeout, F_WRLCK);
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}
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/****************************************************************************
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Unlock a chain by string.
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****************************************************************************/
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void tdb_unlock_bystring(TDB_CONTEXT *tdb, const char *keyval)
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{
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TDB_DATA key = make_tdb_data(keyval, strlen(keyval)+1);
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tdb_chainunlock(tdb, key);
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}
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/****************************************************************************
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Read lock a chain by string. Return -1 if timeout or lock failed.
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****************************************************************************/
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int tdb_read_lock_bystring(TDB_CONTEXT *tdb, const char *keyval, unsigned int timeout)
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{
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TDB_DATA key = make_tdb_data(keyval, strlen(keyval)+1);
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return tdb_chainlock_with_timeout_internal(tdb, key, timeout, F_RDLCK);
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}
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/****************************************************************************
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Read unlock a chain by string.
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****************************************************************************/
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void tdb_read_unlock_bystring(TDB_CONTEXT *tdb, const char *keyval)
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{
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TDB_DATA key = make_tdb_data(keyval, strlen(keyval)+1);
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tdb_chainunlock_read(tdb, key);
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}
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/****************************************************************************
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Fetch a int32 value by a arbitrary blob key, return -1 if not found.
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Output is int32 in native byte order.
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****************************************************************************/
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int32 tdb_fetch_int32_byblob(TDB_CONTEXT *tdb, const char *keyval, size_t len)
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{
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TDB_DATA key = make_tdb_data(keyval, len);
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TDB_DATA data;
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int32 ret;
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data = tdb_fetch(tdb, key);
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if (!data.dptr || data.dsize != sizeof(int32)) {
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SAFE_FREE(data.dptr);
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return -1;
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}
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ret = IVAL(data.dptr,0);
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SAFE_FREE(data.dptr);
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return ret;
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}
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/****************************************************************************
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Fetch a int32 value by string key, return -1 if not found.
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Output is int32 in native byte order.
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****************************************************************************/
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int32 tdb_fetch_int32(TDB_CONTEXT *tdb, const char *keystr)
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{
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return tdb_fetch_int32_byblob(tdb, keystr, strlen(keystr) + 1);
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}
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/****************************************************************************
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Store a int32 value by an arbitary blob key, return 0 on success, -1 on failure.
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Input is int32 in native byte order. Output in tdb is in little-endian.
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****************************************************************************/
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int tdb_store_int32_byblob(TDB_CONTEXT *tdb, const char *keystr, size_t len, int32 v)
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{
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TDB_DATA key = make_tdb_data(keystr, len);
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TDB_DATA data;
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int32 v_store;
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SIVAL(&v_store,0,v);
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data.dptr = (void *)&v_store;
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data.dsize = sizeof(int32);
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return tdb_store(tdb, key, data, TDB_REPLACE);
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}
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/****************************************************************************
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Store a int32 value by string key, return 0 on success, -1 on failure.
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Input is int32 in native byte order. Output in tdb is in little-endian.
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****************************************************************************/
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int tdb_store_int32(TDB_CONTEXT *tdb, const char *keystr, int32 v)
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{
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return tdb_store_int32_byblob(tdb, keystr, strlen(keystr) + 1, v);
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}
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/****************************************************************************
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Fetch a uint32 value by a arbitrary blob key, return -1 if not found.
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Output is uint32 in native byte order.
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****************************************************************************/
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BOOL tdb_fetch_uint32_byblob(TDB_CONTEXT *tdb, const char *keyval, size_t len, uint32 *value)
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{
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TDB_DATA key = make_tdb_data(keyval, len);
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TDB_DATA data;
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data = tdb_fetch(tdb, key);
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if (!data.dptr || data.dsize != sizeof(uint32)) {
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SAFE_FREE(data.dptr);
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return False;
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}
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*value = IVAL(data.dptr,0);
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SAFE_FREE(data.dptr);
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return True;
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}
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/****************************************************************************
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Fetch a uint32 value by string key, return -1 if not found.
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Output is uint32 in native byte order.
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****************************************************************************/
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BOOL tdb_fetch_uint32(TDB_CONTEXT *tdb, const char *keystr, uint32 *value)
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{
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return tdb_fetch_uint32_byblob(tdb, keystr, strlen(keystr) + 1, value);
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}
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/****************************************************************************
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Store a uint32 value by an arbitary blob key, return 0 on success, -1 on failure.
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Input is uint32 in native byte order. Output in tdb is in little-endian.
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****************************************************************************/
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BOOL tdb_store_uint32_byblob(TDB_CONTEXT *tdb, const char *keystr, size_t len, uint32 value)
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{
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TDB_DATA key = make_tdb_data(keystr, len);
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TDB_DATA data;
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uint32 v_store;
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BOOL ret = True;
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SIVAL(&v_store, 0, value);
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data.dptr = (void *)&v_store;
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data.dsize = sizeof(uint32);
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if (tdb_store(tdb, key, data, TDB_REPLACE) == -1)
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ret = False;
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return ret;
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}
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/****************************************************************************
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Store a uint32 value by string key, return 0 on success, -1 on failure.
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Input is uint32 in native byte order. Output in tdb is in little-endian.
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****************************************************************************/
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BOOL tdb_store_uint32(TDB_CONTEXT *tdb, const char *keystr, uint32 value)
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{
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return tdb_store_uint32_byblob(tdb, keystr, strlen(keystr) + 1, value);
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}
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/****************************************************************************
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Store a buffer by a null terminated string key. Return 0 on success, -1
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on failure.
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****************************************************************************/
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int tdb_store_bystring(TDB_CONTEXT *tdb, const char *keystr, TDB_DATA data, int flags)
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{
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TDB_DATA key = make_tdb_data(keystr, strlen(keystr)+1);
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return tdb_store(tdb, key, data, flags);
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}
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/****************************************************************************
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Fetch a buffer using a null terminated string key. Don't forget to call
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free() on the result dptr.
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****************************************************************************/
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TDB_DATA tdb_fetch_bystring(TDB_CONTEXT *tdb, const char *keystr)
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{
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TDB_DATA key = make_tdb_data(keystr, strlen(keystr)+1);
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return tdb_fetch(tdb, key);
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}
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/****************************************************************************
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Delete an entry using a null terminated string key.
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****************************************************************************/
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int tdb_delete_bystring(TDB_CONTEXT *tdb, const char *keystr)
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{
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TDB_DATA key = make_tdb_data(keystr, strlen(keystr)+1);
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return tdb_delete(tdb, key);
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}
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/****************************************************************************
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Atomic integer change. Returns old value. To create, set initial value in *oldval.
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****************************************************************************/
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int32 tdb_change_int32_atomic(TDB_CONTEXT *tdb, const char *keystr, int32 *oldval, int32 change_val)
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{
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int32 val;
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int32 ret = -1;
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if (tdb_lock_bystring(tdb, keystr,0) == -1)
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return -1;
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|
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if ((val = tdb_fetch_int32(tdb, keystr)) == -1) {
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/* The lookup failed */
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if (tdb_error(tdb) != TDB_ERR_NOEXIST) {
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/* but not because it didn't exist */
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goto err_out;
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}
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|
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/* Start with 'old' value */
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val = *oldval;
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|
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} else {
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/* It worked, set return value (oldval) to tdb data */
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*oldval = val;
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}
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|
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/* Increment value for storage and return next time */
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val += change_val;
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|
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if (tdb_store_int32(tdb, keystr, val) == -1)
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goto err_out;
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ret = 0;
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|
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err_out:
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|
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tdb_unlock_bystring(tdb, keystr);
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return ret;
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}
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|
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/****************************************************************************
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Atomic unsigned integer change. Returns old value. To create, set initial value in *oldval.
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****************************************************************************/
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|
|
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BOOL tdb_change_uint32_atomic(TDB_CONTEXT *tdb, const char *keystr, uint32 *oldval, uint32 change_val)
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|
{
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|
uint32 val;
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BOOL ret = False;
|
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|
|
||
|
if (tdb_lock_bystring(tdb, keystr,0) == -1)
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|
return False;
|
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|
|
||
|
if (!tdb_fetch_uint32(tdb, keystr, &val)) {
|
||
|
/* It failed */
|
||
|
if (tdb_error(tdb) != TDB_ERR_NOEXIST) {
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||
|
/* and not because it didn't exist */
|
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|
goto err_out;
|
||
|
}
|
||
|
|
||
|
/* Start with 'old' value */
|
||
|
val = *oldval;
|
||
|
|
||
|
} else {
|
||
|
/* it worked, set return value (oldval) to tdb data */
|
||
|
*oldval = val;
|
||
|
|
||
|
}
|
||
|
|
||
|
/* get a new value to store */
|
||
|
val += change_val;
|
||
|
|
||
|
if (!tdb_store_uint32(tdb, keystr, val))
|
||
|
goto err_out;
|
||
|
|
||
|
ret = True;
|
||
|
|
||
|
err_out:
|
||
|
|
||
|
tdb_unlock_bystring(tdb, keystr);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
/****************************************************************************
|
||
|
Useful pair of routines for packing/unpacking data consisting of
|
||
|
integers and strings.
|
||
|
****************************************************************************/
|
||
|
|
||
|
size_t tdb_pack(char *buf, int bufsize, const char *fmt, ...)
|
||
|
{
|
||
|
va_list ap;
|
||
|
uint8 bt;
|
||
|
uint16 w;
|
||
|
uint32 d;
|
||
|
int i;
|
||
|
void *p;
|
||
|
int len;
|
||
|
char *s;
|
||
|
char c;
|
||
|
char *buf0 = buf;
|
||
|
const char *fmt0 = fmt;
|
||
|
int bufsize0 = bufsize;
|
||
|
|
||
|
va_start(ap, fmt);
|
||
|
|
||
|
while (*fmt) {
|
||
|
switch ((c = *fmt++)) {
|
||
|
case 'b': /* unsigned 8-bit integer */
|
||
|
len = 1;
|
||
|
bt = (uint8)va_arg(ap, int);
|
||
|
if (bufsize && bufsize >= len)
|
||
|
SSVAL(buf, 0, bt);
|
||
|
break;
|
||
|
case 'w': /* unsigned 16-bit integer */
|
||
|
len = 2;
|
||
|
w = (uint16)va_arg(ap, int);
|
||
|
if (bufsize && bufsize >= len)
|
||
|
SSVAL(buf, 0, w);
|
||
|
break;
|
||
|
case 'd': /* signed 32-bit integer (standard int in most systems) */
|
||
|
len = 4;
|
||
|
d = va_arg(ap, uint32);
|
||
|
if (bufsize && bufsize >= len)
|
||
|
SIVAL(buf, 0, d);
|
||
|
break;
|
||
|
case 'p': /* pointer */
|
||
|
len = 4;
|
||
|
p = va_arg(ap, void *);
|
||
|
d = p?1:0;
|
||
|
if (bufsize && bufsize >= len)
|
||
|
SIVAL(buf, 0, d);
|
||
|
break;
|
||
|
case 'P': /* null-terminated string */
|
||
|
s = va_arg(ap,char *);
|
||
|
w = strlen(s);
|
||
|
len = w + 1;
|
||
|
if (bufsize && bufsize >= len)
|
||
|
memcpy(buf, s, len);
|
||
|
break;
|
||
|
case 'f': /* null-terminated string */
|
||
|
s = va_arg(ap,char *);
|
||
|
w = strlen(s);
|
||
|
len = w + 1;
|
||
|
if (bufsize && bufsize >= len)
|
||
|
memcpy(buf, s, len);
|
||
|
break;
|
||
|
case 'B': /* fixed-length string */
|
||
|
i = va_arg(ap, int);
|
||
|
s = va_arg(ap, char *);
|
||
|
len = 4+i;
|
||
|
if (bufsize && bufsize >= len) {
|
||
|
SIVAL(buf, 0, i);
|
||
|
memcpy(buf+4, s, i);
|
||
|
}
|
||
|
break;
|
||
|
default:
|
||
|
DEBUG(0,("Unknown tdb_pack format %c in %s\n",
|
||
|
c, fmt));
|
||
|
len = 0;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
buf += len;
|
||
|
if (bufsize)
|
||
|
bufsize -= len;
|
||
|
if (bufsize < 0)
|
||
|
bufsize = 0;
|
||
|
}
|
||
|
|
||
|
va_end(ap);
|
||
|
|
||
|
DEBUG(18,("tdb_pack(%s, %d) -> %d\n",
|
||
|
fmt0, bufsize0, (int)PTR_DIFF(buf, buf0)));
|
||
|
|
||
|
return PTR_DIFF(buf, buf0);
|
||
|
}
|
||
|
|
||
|
/****************************************************************************
|
||
|
Useful pair of routines for packing/unpacking data consisting of
|
||
|
integers and strings.
|
||
|
****************************************************************************/
|
||
|
|
||
|
int tdb_unpack(char *buf, int bufsize, const char *fmt, ...)
|
||
|
{
|
||
|
va_list ap;
|
||
|
uint8 *bt;
|
||
|
uint16 *w;
|
||
|
uint32 *d;
|
||
|
int len;
|
||
|
int *i;
|
||
|
void **p;
|
||
|
char *s, **b;
|
||
|
char c;
|
||
|
char *buf0 = buf;
|
||
|
const char *fmt0 = fmt;
|
||
|
int bufsize0 = bufsize;
|
||
|
|
||
|
va_start(ap, fmt);
|
||
|
|
||
|
while (*fmt) {
|
||
|
switch ((c=*fmt++)) {
|
||
|
case 'b':
|
||
|
len = 1;
|
||
|
bt = va_arg(ap, uint8 *);
|
||
|
if (bufsize < len)
|
||
|
goto no_space;
|
||
|
*bt = SVAL(buf, 0);
|
||
|
break;
|
||
|
case 'w':
|
||
|
len = 2;
|
||
|
w = va_arg(ap, uint16 *);
|
||
|
if (bufsize < len)
|
||
|
goto no_space;
|
||
|
*w = SVAL(buf, 0);
|
||
|
break;
|
||
|
case 'd':
|
||
|
len = 4;
|
||
|
d = va_arg(ap, uint32 *);
|
||
|
if (bufsize < len)
|
||
|
goto no_space;
|
||
|
*d = IVAL(buf, 0);
|
||
|
break;
|
||
|
case 'p':
|
||
|
len = 4;
|
||
|
p = va_arg(ap, void **);
|
||
|
if (bufsize < len)
|
||
|
goto no_space;
|
||
|
*p = (void *)IVAL(buf, 0);
|
||
|
break;
|
||
|
case 'P':
|
||
|
s = va_arg(ap,char *);
|
||
|
len = strlen(buf) + 1;
|
||
|
if (bufsize < len || len > sizeof(pstring))
|
||
|
goto no_space;
|
||
|
memcpy(s, buf, len);
|
||
|
break;
|
||
|
case 'f':
|
||
|
s = va_arg(ap,char *);
|
||
|
len = strlen(buf) + 1;
|
||
|
if (bufsize < len || len > sizeof(fstring))
|
||
|
goto no_space;
|
||
|
memcpy(s, buf, len);
|
||
|
break;
|
||
|
case 'B':
|
||
|
i = va_arg(ap, int *);
|
||
|
b = va_arg(ap, char **);
|
||
|
len = 4;
|
||
|
if (bufsize < len)
|
||
|
goto no_space;
|
||
|
*i = IVAL(buf, 0);
|
||
|
if (! *i) {
|
||
|
*b = NULL;
|
||
|
break;
|
||
|
}
|
||
|
len += *i;
|
||
|
if (bufsize < len)
|
||
|
goto no_space;
|
||
|
*b = (char *)malloc(*i);
|
||
|
if (! *b)
|
||
|
goto no_space;
|
||
|
memcpy(*b, buf+4, *i);
|
||
|
break;
|
||
|
default:
|
||
|
DEBUG(0,("Unknown tdb_unpack format %c in %s\n",
|
||
|
c, fmt));
|
||
|
|
||
|
len = 0;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
buf += len;
|
||
|
bufsize -= len;
|
||
|
}
|
||
|
|
||
|
va_end(ap);
|
||
|
|
||
|
DEBUG(18,("tdb_unpack(%s, %d) -> %d\n",
|
||
|
fmt0, bufsize0, (int)PTR_DIFF(buf, buf0)));
|
||
|
|
||
|
return PTR_DIFF(buf, buf0);
|
||
|
|
||
|
no_space:
|
||
|
return -1;
|
||
|
}
|
||
|
|
||
|
|
||
|
/**
|
||
|
* Pack SID passed by pointer
|
||
|
*
|
||
|
* @param pack_buf pointer to buffer which is to be filled with packed data
|
||
|
* @param bufsize size of packing buffer
|
||
|
* @param sid pointer to sid to be packed
|
||
|
*
|
||
|
* @return length of the packed representation of the whole structure
|
||
|
**/
|
||
|
size_t tdb_sid_pack(char* pack_buf, int bufsize, DOM_SID* sid)
|
||
|
{
|
||
|
int idx;
|
||
|
size_t len = 0;
|
||
|
|
||
|
if (!sid || !pack_buf) return -1;
|
||
|
|
||
|
len += tdb_pack(pack_buf + len, bufsize - len, "bb", sid->sid_rev_num,
|
||
|
sid->num_auths);
|
||
|
|
||
|
for (idx = 0; idx < 6; idx++) {
|
||
|
len += tdb_pack(pack_buf + len, bufsize - len, "b", sid->id_auth[idx]);
|
||
|
}
|
||
|
|
||
|
for (idx = 0; idx < MAXSUBAUTHS; idx++) {
|
||
|
len += tdb_pack(pack_buf + len, bufsize - len, "d", sid->sub_auths[idx]);
|
||
|
}
|
||
|
|
||
|
return len;
|
||
|
}
|
||
|
|
||
|
|
||
|
/**
|
||
|
* Unpack SID into a pointer
|
||
|
*
|
||
|
* @param pack_buf pointer to buffer with packed representation
|
||
|
* @param bufsize size of the buffer
|
||
|
* @param sid pointer to sid structure to be filled with unpacked data
|
||
|
*
|
||
|
* @return size of structure unpacked from buffer
|
||
|
**/
|
||
|
size_t tdb_sid_unpack(char* pack_buf, int bufsize, DOM_SID* sid)
|
||
|
{
|
||
|
int idx, len = 0;
|
||
|
|
||
|
if (!sid || !pack_buf) return -1;
|
||
|
|
||
|
len += tdb_unpack(pack_buf + len, bufsize - len, "bb",
|
||
|
&sid->sid_rev_num, &sid->num_auths);
|
||
|
|
||
|
for (idx = 0; idx < 6; idx++) {
|
||
|
len += tdb_unpack(pack_buf + len, bufsize - len, "b", &sid->id_auth[idx]);
|
||
|
}
|
||
|
|
||
|
for (idx = 0; idx < MAXSUBAUTHS; idx++) {
|
||
|
len += tdb_unpack(pack_buf + len, bufsize - len, "d", &sid->sub_auths[idx]);
|
||
|
}
|
||
|
|
||
|
return len;
|
||
|
}
|
||
|
|
||
|
|
||
|
/**
|
||
|
* Pack TRUSTED_DOM_PASS passed by pointer
|
||
|
*
|
||
|
* @param pack_buf pointer to buffer which is to be filled with packed data
|
||
|
* @param bufsize size of the buffer
|
||
|
* @param pass pointer to trusted domain password to be packed
|
||
|
*
|
||
|
* @return length of the packed representation of the whole structure
|
||
|
**/
|
||
|
size_t tdb_trusted_dom_pass_pack(char* pack_buf, int bufsize, TRUSTED_DOM_PASS* pass)
|
||
|
{
|
||
|
int idx, len = 0;
|
||
|
|
||
|
if (!pack_buf || !pass) return -1;
|
||
|
|
||
|
/* packing unicode domain name and password */
|
||
|
len += tdb_pack(pack_buf + len, bufsize - len, "d", pass->uni_name_len);
|
||
|
|
||
|
for (idx = 0; idx < 32; idx++)
|
||
|
len += tdb_pack(pack_buf + len, bufsize - len, "w", pass->uni_name[idx]);
|
||
|
|
||
|
len += tdb_pack(pack_buf + len, bufsize - len, "dPd", pass->pass_len,
|
||
|
pass->pass, pass->mod_time);
|
||
|
|
||
|
/* packing SID structure */
|
||
|
len += tdb_sid_pack(pack_buf + len, bufsize - len, &pass->domain_sid);
|
||
|
|
||
|
return len;
|
||
|
}
|
||
|
|
||
|
|
||
|
/**
|
||
|
* Unpack TRUSTED_DOM_PASS passed by pointer
|
||
|
*
|
||
|
* @param pack_buf pointer to buffer with packed representation
|
||
|
* @param bufsize size of the buffer
|
||
|
* @param pass pointer to trusted domain password to be filled with unpacked data
|
||
|
*
|
||
|
* @return size of structure unpacked from buffer
|
||
|
**/
|
||
|
size_t tdb_trusted_dom_pass_unpack(char* pack_buf, int bufsize, TRUSTED_DOM_PASS* pass)
|
||
|
{
|
||
|
int idx, len = 0;
|
||
|
|
||
|
if (!pack_buf || !pass) return -1;
|
||
|
|
||
|
/* unpack unicode domain name and plaintext password */
|
||
|
len += tdb_unpack(pack_buf, bufsize - len, "d", &pass->uni_name_len);
|
||
|
|
||
|
for (idx = 0; idx < 32; idx++)
|
||
|
len += tdb_unpack(pack_buf + len, bufsize - len, "w", &pass->uni_name[idx]);
|
||
|
|
||
|
len += tdb_unpack(pack_buf + len, bufsize - len, "dPd", &pass->pass_len, &pass->pass,
|
||
|
&pass->mod_time);
|
||
|
|
||
|
/* unpack domain sid */
|
||
|
len += tdb_sid_unpack(pack_buf + len, bufsize - len, &pass->domain_sid);
|
||
|
|
||
|
return len;
|
||
|
}
|
||
|
|
||
|
|
||
|
/****************************************************************************
|
||
|
Log tdb messages via DEBUG().
|
||
|
****************************************************************************/
|
||
|
|
||
|
static void tdb_log(TDB_CONTEXT *tdb, int level, const char *format, ...)
|
||
|
{
|
||
|
va_list ap;
|
||
|
char *ptr = NULL;
|
||
|
|
||
|
va_start(ap, format);
|
||
|
vasprintf(&ptr, format, ap);
|
||
|
va_end(ap);
|
||
|
|
||
|
if (!ptr || !*ptr)
|
||
|
return;
|
||
|
|
||
|
DEBUG(level, ("tdb(%s): %s", tdb->name ? tdb->name : "unnamed", ptr));
|
||
|
SAFE_FREE(ptr);
|
||
|
}
|
||
|
|
||
|
/****************************************************************************
|
||
|
Like tdb_open() but also setup a logging function that redirects to
|
||
|
the samba DEBUG() system.
|
||
|
****************************************************************************/
|
||
|
|
||
|
TDB_CONTEXT *tdb_open_log(const char *name, int hash_size, int tdb_flags,
|
||
|
int open_flags, mode_t mode)
|
||
|
{
|
||
|
TDB_CONTEXT *tdb;
|
||
|
|
||
|
if (!lp_use_mmap())
|
||
|
tdb_flags |= TDB_NOMMAP;
|
||
|
|
||
|
tdb = tdb_open_ex(name, hash_size, tdb_flags,
|
||
|
open_flags, mode, tdb_log);
|
||
|
if (!tdb)
|
||
|
return NULL;
|
||
|
|
||
|
return tdb;
|
||
|
}
|
||
|
|
||
|
|
||
|
/****************************************************************************
|
||
|
Allow tdb_delete to be used as a tdb_traversal_fn.
|
||
|
****************************************************************************/
|
||
|
|
||
|
int tdb_traverse_delete_fn(TDB_CONTEXT *the_tdb, TDB_DATA key, TDB_DATA dbuf,
|
||
|
void *state)
|
||
|
{
|
||
|
return tdb_delete(the_tdb, key);
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
/**
|
||
|
* Search across the whole tdb for keys that match the given pattern
|
||
|
* return the result as a list of keys
|
||
|
*
|
||
|
* @param tdb pointer to opened tdb file context
|
||
|
* @param pattern searching pattern used by fnmatch(3) functions
|
||
|
*
|
||
|
* @return list of keys found by looking up with given pattern
|
||
|
**/
|
||
|
TDB_LIST_NODE *tdb_search_keys(TDB_CONTEXT *tdb, const char* pattern)
|
||
|
{
|
||
|
TDB_DATA key, next;
|
||
|
TDB_LIST_NODE *list = NULL;
|
||
|
TDB_LIST_NODE *rec = NULL;
|
||
|
TDB_LIST_NODE *tmp = NULL;
|
||
|
|
||
|
for (key = tdb_firstkey(tdb); key.dptr; key = next) {
|
||
|
/* duplicate key string to ensure null-termination */
|
||
|
char *key_str = (char*) strndup(key.dptr, key.dsize);
|
||
|
if (!key_str) {
|
||
|
DEBUG(0, ("tdb_search_keys: strndup() failed!\n"));
|
||
|
smb_panic("strndup failed!\n");
|
||
|
}
|
||
|
|
||
|
DEBUG(18, ("checking %s for match to pattern %s\n", key_str, pattern));
|
||
|
|
||
|
next = tdb_nextkey(tdb, key);
|
||
|
|
||
|
/* do the pattern checking */
|
||
|
if (fnmatch(pattern, key_str, 0) == 0) {
|
||
|
rec = (TDB_LIST_NODE*) malloc(sizeof(*rec));
|
||
|
ZERO_STRUCTP(rec);
|
||
|
|
||
|
rec->node_key = key;
|
||
|
|
||
|
DLIST_ADD_END(list, rec, tmp);
|
||
|
|
||
|
DEBUG(18, ("checking %s matched pattern %s\n", key_str, pattern));
|
||
|
} else {
|
||
|
free(key.dptr);
|
||
|
}
|
||
|
|
||
|
/* free duplicated key string */
|
||
|
free(key_str);
|
||
|
}
|
||
|
|
||
|
return list;
|
||
|
|
||
|
};
|
||
|
|
||
|
|
||
|
/**
|
||
|
* Free the list returned by tdb_search_keys
|
||
|
*
|
||
|
* @param node list of results found by tdb_search_keys
|
||
|
**/
|
||
|
void tdb_search_list_free(TDB_LIST_NODE* node)
|
||
|
{
|
||
|
TDB_LIST_NODE *next_node;
|
||
|
|
||
|
while (node) {
|
||
|
next_node = node->next;
|
||
|
SAFE_FREE(node->node_key.dptr);
|
||
|
SAFE_FREE(node);
|
||
|
node = next_node;
|
||
|
};
|
||
|
};
|
||
|
|
||
|
|