source: vendor/current/source3/lib/ldb/examples/ldifreader.c@ 414

Last change on this file since 414 was 414, checked in by Herwig Bauernfeind, 15 years ago

Samba 3.5.0: Initial import
File size: 3.2 KB
Line 
1/*
2 example code for the ldb database library
3
4 Copyright (C) Brad Hards (bradh@frogmouth.net) 2005-2006
5
6 ** NOTE! The following LGPL license applies to the ldb
7 ** library. This does NOT imply that all of Samba is released
8 ** under the LGPL
9
10 This library is free software; you can redistribute it and/or
11 modify it under the terms of the GNU Lesser General Public
12 License as published by the Free Software Foundation; either
13 version 3 of the License, or (at your option) any later version.
14
15 This library is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 Lesser General Public License for more details.
19
20 You should have received a copy of the GNU Lesser General Public
21 License along with this library; if not, see <http://www.gnu.org/licenses/>.
22*/
23
24/** \example ldifreader.c
25
26The code below shows a simple LDB application.
27
28It lists / dumps the entries in an LDIF file to standard output.
29
30*/
31
32#include "includes.h"
33#include "ldb/include/ldb.h"
34#include "ldb/include/ldb_errors.h"
35
36/*
37 ldb_ldif_write takes a function pointer to a custom output
38 function. This version is about as simple as the output function can
39 be. In a more complex example, you'd likely be doing something with
40 the private data function (e.g. holding a file handle).
41*/
42static int vprintf_fn(void *private_data, const char *fmt, ...)
43{
44 int retval;
45 va_list ap;
46
47 va_start(ap, fmt);
48 /* We just write to standard output */
49 retval = vprintf(fmt, ap);
50 va_end(ap);
51 /* Note that the function should return the number of
52 bytes written, or a negative error code */
53 return retval;
54}
55
56int main(int argc, const char **argv)
57{
58 struct ldb_context *ldb;
59 FILE *fileStream;
60 struct ldb_ldif *ldifMsg;
61
62 if (argc != 2) {
63 printf("Usage %s filename.ldif\n", argv[0]);
64 exit(1);
65 }
66
67 /*
68 This is the always the first thing you want to do in an LDB
69 application - initialise up the context structure.
70
71 Note that you can use the context structure as a parent
72 for talloc allocations as well
73 */
74 ldb = ldb_init(NULL);
75
76 fileStream = fopen(argv[1], "r");
77 if (0 == fileStream) {
78 perror(argv[1]);
79 exit(1);
80 }
81
82 /*
83 We now work through the filestream to get each entry.
84 */
85 while ( (ldifMsg = ldb_ldif_read_file(ldb, fileStream)) ) {
86 /*
87 Each message has a particular change type. For Add,
88 Modify and Delete, this will also appear in the
89 output listing (as changetype: add, changetype:
90 modify or changetype:delete, respectively).
91 */
92 switch (ldifMsg->changetype) {
93 case LDB_CHANGETYPE_NONE:
94 printf("ChangeType: None\n");
95 break;
96 case LDB_CHANGETYPE_ADD:
97 printf("ChangeType: Add\n");
98 break;
99 case LDB_CHANGETYPE_MODIFY:
100 printf("ChangeType: Modify\n");
101 break;
102 case LDB_CHANGETYPE_DELETE:
103 printf("ChangeType: Delete\n");
104 break;
105 default:
106 printf("ChangeType: Unknown\n");
107 }
108
109 /*
110 We can now write out the results, using our custom
111 output routine as defined at the top of this file.
112 */
113 ldb_ldif_write(ldb, vprintf_fn, NULL, ldifMsg);
114
115 /*
116 Clean up the message
117 */
118 ldb_ldif_read_free(ldb, ldifMsg);
119 }
120
121 /*
122 Clean up the context
123 */
124 talloc_free(ldb);
125
126 return 0;
127}
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