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
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
|
<?php
/*
+-----------------------------------------------------------------------+
| program/include/rcube_db.inc |
| |
| This file is part of the RoundCube Webmail client |
| Copyright (C) 2005, RoundCube Dev. - Switzerland |
| Licensed under the GNU GPL |
| |
| PURPOSE: |
| PEAR:DB wrapper class that implements PEAR DB functions |
| See http://pear.php.net/package/DB |
| |
+-----------------------------------------------------------------------+
| Author: David Saez Padros <david@ols.es> |
+-----------------------------------------------------------------------+
$Id$
*/
require_once('MDB2.php');
class rcube_db
{
var $db_dsnw; // DSN for write operations
var $db_dsnr; // DSN for read operations
var $db_connected=false; // Already connected ?
var $db_mode=''; // Connection mode
var $db_handle=0; // Connection handle
var $a_query_results = array('dummy');
var $last_res_id = 0;
// PHP 5 constructor
function __construct($db_dsnw,$db_dsnr='')
{
if ($db_dsnr=='') $db_dsnr=$db_dsnw;
$this->db_dsnw = $db_dsnw;
$this->db_dsnr = $db_dsnr;
$dsn_array = MDB2::parseDSN($db_dsnw);
$this->db_provider = $dsn_array['phptype'];
}
// PHP 4 compatibility
function rcube_db($db_dsnw,$db_dsnr='')
{
$this->__construct($db_dsnw,$db_dsnr);
}
// Connect to specific database
function dsn_connect($dsn)
{
// Use persistent connections if available
$dbh = MDB2::factory($dsn, array('persistent' => TRUE));
if (PEAR::isError($dbh))
raise_error(array('code' => 500,
'type' => 'db',
'line' => __LINE__,
'file' => __FILE__,
'message' => $dbh->getMessage()), TRUE, FALSE);
else if ($this->db_provider=='sqlite')
{
$dsn_array = MDB2::parseDSN($dsn);
if (!filesize($dsn_array['database']) && !empty($this->sqlite_initials))
$this->_sqlite_create_database($dbh, $this->sqlite_initials);
}
return $dbh;
}
// Connect to appropiate databse
function db_connect ($mode)
{
$this->db_mode = $mode;
// Already connected
if ($this->db_connected)
{
// no replication, current connection is ok
if ($this->db_dsnw==$this->db_dsnr) return;
// connected to master, current connection is ok
if ($this->db_mode=='w') return;
// Same mode, current connection is ok
if ($this->db_mode==$mode) return;
}
if ($mode=='r')
$dsn=$this->db_dsnr;
else
$dsn=$this->db_dsnw;
$this->db_handle = $this->dsn_connect($dsn);
$this->db_connected = true;
}
// Query database
function query()
{
$params = func_get_args();
$query = array_shift($params);
return $this->_query($query, 0, 0, $params);
}
function limitquery()
{
$params = func_get_args();
$query = array_shift($params);
$offset = array_shift($params);
$numrows = array_shift($params);
return $this->_query($query, $offset, $numrows, $params);
}
function _query($query, $offset, $numrows, $params)
{
// Read or write ?
if (strtolower(trim(substr($query,0,6)))=='select')
$mode='r';
else
$mode='w';
$this->db_connect($mode);
if ($this->db_provider == 'sqlite')
$query = $this->_sqlite_prepare_query($query);
$this->db_handle->row_offset = $offset;
$this->db_handle->row_limit = $numrows;
$result = $this->db_handle->query($query);
if (PEAR::isError($result))
raise_error(array('code' => 500,
'type' => 'db',
'line' => __LINE__,
'file' => __FILE__,
'message' => $result->getMessage()), TRUE, FALSE);
return $this->_add_result($result, $query);
}
function num_rows($res_id=NULL)
{
if (!$this->db_handle)
return FALSE;
$result = $this->_get_result($res_id);
if ($result)
return $result->numRows();
else
return FALSE;
}
function affected_rows($res_id=NULL)
{
if (!$this->db_handle)
return FALSE;
return $this->db_handle->affectedRows();
}
function insert_id($sequence = '')
{
if (!$this->db_handle || $this->db_mode=='r')
return FALSE;
return $this->db_handle->lastInsertID();
}
function fetch_assoc($res_id=NULL)
{
$result = $this->_get_result($res_id);
if (PEAR::isError($result))
{
raise_error( array('code' => 500, 'type' => 'db', 'line' => __LINE__, 'file' => __FILE__,
'message' => $this->db_link->getMessage()), TRUE, FALSE);
return FALSE;
}
return $result->fetchRow(MDB2_FETCHMODE_ASSOC);
}
function quoteIdentifier ( $str )
{
if (!$this->db_handle)
$this->db_connect('r');
return $this->db_handle->quoteIdentifier($str);
}
function unixtimestamp($field)
{
switch($this->db_provider)
{
case 'pgsql':
return "EXTRACT (EPOCH FROM $field)";
break;
default:
return "UNIX_TIMESTAMP($field)";
}
}
function _add_result($res, $query)
{
// sql error occured
if (PEAR::isError($res))
{
raise_error(array('code' => 500, 'type' => 'db', 'line' => __LINE__, 'file' => __FILE__, 'message' => $res->getMessage() . " Query: " . substr(preg_replace('/[\r\n]+\s*/', ' ', $query), 0, 1024)), TRUE, FALSE);
return FALSE;
}
else
{
$res_id = sizeof($this->a_query_results);
$this->a_query_results[$res_id] = $res;
$this->last_res_id = $res_id;
return $res_id;
}
}
function _get_result($res_id)
{
if ($res_id==NULL)
$res_id = $this->last_res_id;
if ($res_id && isset($this->a_query_results[$res_id]))
return $this->a_query_results[$res_id];
else
return FALSE;
}
// create a sqlite database from a file
function _sqlite_create_database($dbh, $fileName)
{
if (empty($fileName) || !is_string($fileName))
return ;
$data = '';
if ($fd = fopen($fileName, 'r'))
{
$data = fread($fd, filesize($fileName));
fclose($fd);
}
if (strlen($data))
sqlite_exec($dbh->connection, $data);
}
// transform a query so that it is sqlite2 compliant
function _sqlite_prepare_query($query)
{
if (!is_string($query))
return ($query);
$search = array('/NOW\(\)/',
'/`/');
$replace = array("datetime('now')",
'"');
$query = preg_replace($search, $replace, $query);
return ($query);
}
}
?>
|
