lib/tdb2/tools/tdb2dump.c

   1 /*
   2    simple tdb2 dump util
   3    Copyright (C) Andrew Tridgell              2001
   4    Copyright (C) Rusty Russell                2011
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19 #include "tdb2.h"
  20 #include <ctype.h>
  21 #include <stdio.h>
  22 #include <sys/types.h>
  23 #include <sys/stat.h>
  24 #include <fcntl.h>
  25 #include <stdlib.h>
  26 #include <unistd.h>
  27
  28 static void print_data(TDB_DATA d)
  29 {
  30         unsigned char *p = (unsigned char *)d.dptr;
  31         int len = d.dsize;
  32         while (len--) {
  33                 if (isprint(*p) && !strchr("\"\\", *p)) {
  34                         fputc(*p, stdout);
  35                 } else {
  36                         printf("\\%02X", *p);
  37                 }
  38                 p++;
  39         }
  40 }
  41
  42 static int traverse_fn(struct tdb_context *tdb, TDB_DATA key, TDB_DATA dbuf, void *state)
  43 {
  44         printf("{\n");
  45         printf("key(%d) = \"", (int)key.dsize);
  46         print_data(key);
  47         printf("\"\n");
  48         printf("data(%d) = \"", (int)dbuf.dsize);
  49         print_data(dbuf);
  50         printf("\"\n");
  51         printf("}\n");
  52         return 0;
  53 }
  54
  55 static int dump_tdb(const char *fname, const char *keyname)
  56 {
  57         struct tdb_context *tdb;
  58         TDB_DATA key, value;
  59
  60         tdb = tdb_open(fname, 0, O_RDONLY, 0, NULL);
  61         if (!tdb) {
  62                 printf("Failed to open %s\n", fname);
  63                 return 1;
  64         }
  65
  66         if (!keyname) {
  67                 tdb_traverse(tdb, traverse_fn, NULL);
  68         } else {
  69                 key = tdb_mkdata(keyname, strlen(keyname));
  70                 if (tdb_fetch(tdb, key, &value) != 0) {
  71                         return 1;
  72                 } else {
  73                         print_data(value);
  74                         free(value.dptr);
  75                 }
  76         }
  77
  78         return 0;
  79 }
  80
  81 static void usage( void)
  82 {
  83         printf( "Usage: tdb2dump [options] <filename>\n\n");
  84         printf( "   -h          this help message\n");
  85         printf( "   -k keyname  dumps value of keyname\n");
  86 }
  87
  88  int main(int argc, char *argv[])
  89 {
  90         char *fname, *keyname=NULL;
  91         int c;
  92
  93         if (argc < 2) {
  94                 printf("Usage: tdb2dump <fname>\n");
  95                 exit(1);
  96         }
  97
  98         while ((c = getopt( argc, argv, "hk:")) != -1) {
  99                 switch (c) {
 100                 case 'h':
 101                         usage();
 102                         exit( 0);
 103                 case 'k':
 104                         keyname = optarg;
 105                         break;
 106                 default:
 107                         usage();
 108                         exit( 1);
 109                 }
 110         }
 111
 112         fname = argv[optind];
 113
 114         return dump_tdb(fname, keyname);
 115 }