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/*
Unix SMB/CIFS implementation.
simple tdb dump util
Copyright (C) Andrew Tridgell 2001
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 "replace.h"
#include "system/locale.h"
#include "system/time.h"
#include "system/filesys.h"
#include "system/wait.h"
#include "tdb.h"
static void print_data(TDB_DATA d)
{
unsigned char *p = (unsigned char *)d.dptr;
int len = d.dsize;
while (len--) {
if (isprint(*p) && !strchr("\"\\", *p)) {
fputc(*p, stdout);
} else {
printf("\\%02X", *p);
}
p++;
}
}
static int traverse_fn(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf, void *state)
{
printf("{\n");
printf("key(%zu) = \"", key.dsize);
print_data(key);
printf("\"\n");
printf("data(%zu) = \"", dbuf.dsize);
print_data(dbuf);
printf("\"\n");
printf("}\n");
return 0;
}
static void log_stderr(struct tdb_context *tdb, enum tdb_debug_level level,
const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
static void log_stderr(struct tdb_context *tdb, enum tdb_debug_level level,
const char *fmt, ...)
{
va_list ap;
const char *name = tdb_name(tdb);
const char *prefix = "";
if (!name)
name = "unnamed";
switch (level) {
case TDB_DEBUG_ERROR:
prefix = "ERROR: ";
break;
case TDB_DEBUG_WARNING:
prefix = "WARNING: ";
break;
case TDB_DEBUG_TRACE:
return;
default:
case TDB_DEBUG_FATAL:
prefix = "FATAL: ";
break;
}
va_start(ap, fmt);
fprintf(stderr, "tdb(%s): %s", name, prefix);
vfprintf(stderr, fmt, ap);
va_end(ap);
}
static void emergency_walk(TDB_DATA key, TDB_DATA dbuf, void *keyname)
{
if (keyname) {
if (key.dsize != strlen(keyname))
return;
if (memcmp(key.dptr, keyname, key.dsize) != 0)
return;
}
traverse_fn(NULL, key, dbuf, NULL);
}
static int dump_tdb(const char *fname, const char *keyname, bool emergency)
{
TDB_CONTEXT *tdb;
TDB_DATA key, value;
struct tdb_logging_context logfn = {
.log_fn = log_stderr,
};
int tdb_flags = TDB_DEFAULT;
/*
* Note: that O_RDONLY implies TDB_NOLOCK, but we want to make it
* explicit as it's important when working on databases which were
* created with mutex locking.
*/
tdb_flags |= TDB_NOLOCK;
tdb = tdb_open_ex(fname, 0, tdb_flags, O_RDONLY, 0, &logfn, NULL);
if (!tdb) {
printf("Failed to open %s\n", fname);
return 1;
}
if (emergency) {
return tdb_rescue(tdb, emergency_walk, discard_const(keyname)) == 0;
}
if (!keyname) {
return tdb_traverse(tdb, traverse_fn, NULL) == -1 ? 1 : 0;
} else {
key.dptr = discard_const_p(uint8_t, keyname);
key.dsize = strlen(keyname);
value = tdb_fetch(tdb, key);
if (!value.dptr) {
return 1;
} else {
print_data(value);
free(value.dptr);
}
}
return 0;
}
static void usage( void)
{
printf( "Usage: tdbdump [options] <filename>\n\n");
printf( " -h this help message\n");
printf( " -k keyname dumps value of keyname\n");
printf( " -e emergency dump, for corrupt databases\n");
}
int main(int argc, char *argv[])
{
char *fname, *keyname=NULL;
bool emergency = false;
int c;
if (argc < 2) {
printf("Usage: tdbdump <fname>\n");
exit(1);
}
while ((c = getopt( argc, argv, "hk:e")) != -1) {
switch (c) {
case 'h':
usage();
exit( 0);
case 'k':
keyname = optarg;
break;
case 'e':
emergency = true;
break;
default:
usage();
exit( 1);
}
}
fname = argv[optind];
return dump_tdb(fname, keyname, emergency);
}
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