source: branches/samba-3.5.x/lib/tdb/tools/tdbdump.c

/* 
   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(%d) = \"", (int)key.dsize);
        print_data(key);
        printf("\"\n");
        printf("data(%d) = \"", (int)dbuf.dsize);
        print_data(dbuf);
        printf("\"\n");
        printf("}\n");
        return 0;
}

static int dump_tdb(const char *fname, const char *keyname)
{
        TDB_CONTEXT *tdb;
        TDB_DATA key, value;
        tdb = tdb_open(fname, 0, 0, O_RDONLY, 0);
        if (!tdb) {
                printf("Failed to open %s\n", fname);
                return 1;
        }

        if (!keyname) {
                tdb_traverse(tdb, traverse_fn, NULL);
        } 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");
}

 int main(int argc, char *argv[])
{
        char *fname, *keyname=NULL;
        int c;

        if (argc < 2) {
                printf("Usage: tdbdump <fname>\n");
                exit(1);
        }

        while ((c = getopt( argc, argv, "hk:")) != -1) {
                switch (c) {
                case 'h':
                        usage();
                        exit( 0);
                case 'k':
                        keyname = optarg;
                        break;
                default:
                        usage();
                        exit( 1);
                }
        }

        fname = argv[optind];

        return dump_tdb(fname, keyname);
}