]> git.ozlabs.org Git - ccan/blob - ccan/tdb2/tools/tdb2dump.c
tdb2: Add tools/tdb2dump, tools/tdb2restore, use "tdb2.h" includes.
[ccan] / ccan / 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 }