1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
/*
example code for the ldb database library
Copyright (C) Brad Hards (bradh@frogmouth.net) 2005-2006
** NOTE! The following LGPL license applies to the ldb
** library. This does NOT imply that all of Samba is released
** under the LGPL
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301 USA
*/
/** \example ldbreader.c
The code below shows a simple LDB application.
It lists / dumps the records in a LDB database to standard output.
*/
#include "includes.h"
#include "ldb/include/ldb.h"
#include "ldb/include/ldb_errors.h"
/*
ldb_ldif_write takes a function pointer to a custom output
function. This version is about as simple as the output function can
be. In a more complex example, you'd likely be doing something with
the private data function (e.g. holding a file handle).
*/
static int vprintf_fn(void *private_data, const char *fmt, ...)
{
int retval;
va_list ap;
va_start(ap, fmt);
/* We just write to standard output */
retval = vprintf(fmt, ap);
va_end(ap);
/* Note that the function should return the number of
bytes written, or a negative error code */
return retval;
}
int main(int argc, const char **argv)
{
struct ldb_context *ldb;
const char *expression = "(dn=*)";
struct ldb_result *resultMsg;
int i;
/*
This is the always the first thing you want to do in an LDB
application - initialise up the context structure.
Note that you can use the context structure as a parent
for talloc allocations as well
*/
ldb = ldb_init(NULL);
/*
We now open the database. In this example we just hard code the connection path.
Also note that the database is being opened read-only. This means that the
call will fail unless the database already exists.
*/
if (LDB_SUCCESS != ldb_connect(ldb, "tdb://tdbtest.ldb", LDB_FLG_RDONLY, NULL) ){
printf("Problem on connection\n");
exit(-1);
}
/*
At this stage we have an open database, and can start using it. It is opened
read-only, so a query is possible.
We construct a search that just returns all the (sensible) contents. You can do
quite fine grained results with the LDAP search syntax, however it is a bit
confusing to start with. See RFC2254.
*/
if (LDB_SUCCESS != ldb_search(ldb, NULL, LDB_SCOPE_DEFAULT,
expression, NULL, &resultMsg) ) {
printf("Problem in search\n");
exit(-1);
}
printf("%i records returned\n", resultMsg->count);
/*
We can now iterate through the results, writing them out
(to standard output) with our custom output routine as defined
at the top of this file
*/
for (i = 0; i < resultMsg->count; ++i) {
struct ldb_ldif ldifMsg;
printf("Message: %i\n", i+1);
ldifMsg.changetype = LDB_CHANGETYPE_NONE;
ldifMsg.msg = resultMsg->msgs[i];
ldb_ldif_write(ldb, vprintf_fn, NULL, &ldifMsg);
}
/*
There are two objects to clean up - the result from the
ldb_search() query, and the original ldb context.
*/
talloc_free(resultMsg);
talloc_free(ldb);
return 0;
}
|
