sin/samba-mirror
1
0
Fork 0
mirror of https://github.com/samba-team/samba.git synced 2025-01-10 01:18:15 +03:00
Code

tdb: Add tdbdump option to output all data as hex values

Browse Source 
This can be useful for debugging tdb databases, the hex output of the
key can be used for "net tdb" or ctdb commands.

Signed-off-by: Christof Schmitt <cs@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This commit is contained in:
Christof Schmitt 2024-03-07 16:38:53 -07:00
parent f6a47de2db
commit 5f5290c271
1 changed files with 35 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
lib/tdb/tools/tdbdump.c
View File

@ -24,12 +24,19 @@
#include "system/wait.h"
#include "tdb.h"
static void print_data(TDB_DATA d)
struct traverse_state {
bool hex_output;
const char *keyname;
};
static void print_data(TDB_DATA d, bool hex_output)
{
unsigned char *p = (unsigned char *)d.dptr;
int len = d.dsize;
while (len--) {
if (isprint(*p) && !strchr("\"\\", *p)) {
if (hex_output) {
printf("%02X", *p);
} else if(isprint(*p) && !strchr("\"\\", *p)) {
fputc(*p, stdout);
} else {
printf("\\%02X", *p);
@ -40,12 +47,14 @@ static void print_data(TDB_DATA d)
static int traverse_fn(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf, void *state)
{
struct traverse_state *traverse = state;
printf("{\n");
printf("key(%zu) = \"", key.dsize);
print_data(key);
print_data(key, traverse->hex_output);
printf("\"\n");
printf("data(%zu) = \"", dbuf.dsize);
print_data(dbuf);
print_data(dbuf, traverse->hex_output);
printf("\"\n");
printf("}\n");
return 0;
@ -86,18 +95,21 @@ static void log_stderr(struct tdb_context *tdb, enum tdb_debug_level level,
va_end(ap);
}
static void emergency_walk(TDB_DATA key, TDB_DATA dbuf, void *keyname)
static void emergency_walk(TDB_DATA key, TDB_DATA dbuf, void *state)
{
if (keyname) {
if (key.dsize != strlen(keyname))
struct traverse_state *traverse = state;
if (traverse->keyname) {
if (key.dsize != strlen(traverse->keyname))
return;
if (memcmp(key.dptr, keyname, key.dsize) != 0)
if (memcmp(key.dptr, traverse->keyname, key.dsize) != 0)
return;
}
traverse_fn(NULL, key, dbuf, NULL);
traverse_fn(NULL, key, dbuf, traverse);
}
static int dump_tdb(const char *fname, const char *keyname, bool emergency)
static int dump_tdb(const char *fname, const char *keyname,
bool emergency, bool hex_output)
{
TDB_CONTEXT *tdb;
TDB_DATA key, value;
@ -120,10 +132,14 @@ static int dump_tdb(const char *fname, const char *keyname, bool emergency)
}
if (emergency) {
return tdb_rescue(tdb, emergency_walk, discard_const(keyname)) == 0;
struct traverse_state traverse =
{ .hex_output = hex_output,
.keyname = keyname };
return tdb_rescue(tdb, emergency_walk, &traverse) == 0;
}
if (!keyname) {
return tdb_traverse(tdb, traverse_fn, NULL) == -1 ? 1 : 0;
struct traverse_state traverse = { .hex_output = hex_output };
return tdb_traverse(tdb, traverse_fn, &traverse) == -1 ? 1 : 0;
} else {
key.dptr = discard_const_p(uint8_t, keyname);
key.dsize = strlen(keyname);
@ -131,7 +147,7 @@ static int dump_tdb(const char *fname, const char *keyname, bool emergency)
if (!value.dptr) {
return 1;
} else {
print_data(value);
print_data(value, hex_output);
free(value.dptr);
}
}
@ -150,7 +166,7 @@ static void usage( void)
int main(int argc, char *argv[])
{
char *fname, *keyname=NULL;
bool emergency = false;
bool emergency = false, hex_output = false;
int c;
if (argc < 2) {
@ -158,7 +174,7 @@ static void usage( void)
exit(1);
}
while ((c = getopt( argc, argv, "hk:e")) != -1) {
while ((c = getopt( argc, argv, "hk:ex")) != -1) {
switch (c) {
case 'h':
usage();
@ -169,6 +185,9 @@ static void usage( void)
case 'e':
emergency = true;
break;
case 'x':
hex_output = true;
break;
default:
usage();
exit( 1);
@ -177,5 +196,5 @@ static void usage( void)
fname = argv[optind];
return dump_tdb(fname, keyname, emergency);
return dump_tdb(fname, keyname, emergency, hex_output);
}