| commit | author | age | ||
| f45ec7 | 1 | <?php |
| S | 2 | |
| 3 | /* | |
| 4 | +-----------------------------------------------------------------------+ | |
| 5 | | program/include/rcube_db.inc | | |
| 6 | | | | |
| 7 | | This file is part of the RoundCube Webmail client | | |
| 8 | | Copyright (C) 2005, RoundCube Dev. - Switzerland | | |
| 9 | | Licensed under the GNU GPL | | |
| 10 | | | | |
| 11 | | PURPOSE: | | |
| 12 | | PEAR:DB wrapper class that implements PEAR DB functions | | |
| 13 | | See http://pear.php.net/package/DB | | |
| 14 | | | | |
| 15 | +-----------------------------------------------------------------------+ | |
| 16 | | Author: David Saez Padros <david@ols.es> | | |
| 17 | +-----------------------------------------------------------------------+ | |
| 18 | ||
| 19 | $Id$ | |
| 20 | ||
| 21 | */ | |
| 22 | ||
| 23 | require_once('MDB2.php'); | |
| 24 | ||
| 25 | class rcube_db | |
| 26 | { | |
| 27 | var $db_dsnw; // DSN for write operations | |
| 28 | var $db_dsnr; // DSN for read operations | |
| 29 | var $db_connected=false; // Already connected ? | |
| 30 | var $db_mode=''; // Connection mode | |
| 31 | var $db_handle=0; // Connection handle | |
| 32 | ||
| 33 | var $a_query_results = array('dummy'); | |
| 34 | var $last_res_id = 0; | |
| 35 | ||
| 36 | // PHP 5 constructor | |
| 37 | function __construct($db_dsnw,$db_dsnr='') | |
| 38 | { | |
| 39 | if ($db_dsnr=='') $db_dsnr=$db_dsnw; | |
| 40 | ||
| 41 | $this->db_dsnw = $db_dsnw; | |
| 42 | $this->db_dsnr = $db_dsnr; | |
| 43 | ||
| 44 | $dsn_array = MDB2::parseDSN($db_dsnw); | |
| 45 | $this->db_provider = $dsn_array['phptype']; | |
| 46 | } | |
| 47 | ||
| 48 | // PHP 4 compatibility | |
| 49 | function rcube_db($db_dsnw,$db_dsnr='') | |
| 50 | { | |
| 51 | $this->__construct($db_dsnw,$db_dsnr); | |
| 52 | } | |
| 53 | ||
| 54 | // Connect to specific database | |
| 55 | function dsn_connect($dsn) | |
| 56 | { | |
| 57 | // Use persistent connections if available | |
| 58 | $dbh = MDB2::factory($dsn, array('persistent' => $true)); | |
| 59 | ||
| 60 | if (PEAR::isError($dbh)) | |
| 61 | raise_error(array('code' => 500, | |
| 62 | 'type' => 'db', | |
| 63 | 'line' => __LINE__, | |
| 64 | 'file' => __FILE__, | |
| 65 | 'message' => $dbh->getMessage()), TRUE, FALSE); | |
| 66 | ||
| 67 | else if ($this->db_provider=='sqlite') | |
| 68 | { | |
| 69 | $dsn_array = MDB2::parseDSN($dsn); | |
| 70 | if (!filesize($dsn_array['database']) && !empty($this->sqlite_initials)) | |
| 71 | $this->_sqlite_create_database($dbh, $this->sqlite_initials); | |
| 72 | } | |
| 73 | ||
| 74 | return $dbh; | |
| 75 | } | |
| 76 | ||
| 77 | // Connect to appropiate databse | |
| 78 | function db_connect ($mode) | |
| 79 | { | |
| 80 | $this->db_mode = $mode; | |
| 81 | ||
| 82 | // Already connected | |
| 83 | if ($this->db_connected) | |
| 84 | { | |
| 85 | // no replication, current connection is ok | |
| 86 | if ($this->db_dsnw==$this->db_dsnr) return; | |
| 87 | ||
| 88 | // connected to master, current connection is ok | |
| 89 | if ($this->db_mode=='w') return; | |
| 90 | ||
| 91 | // Same mode, current connection is ok | |
| 92 | if ($this->db_mode==$mode) return; | |
| 93 | } | |
| 94 | ||
| 95 | if ($mode=='r') | |
| 96 | $dsn=$this->db_dsnr; | |
| 97 | else | |
| 98 | $dsn=$this->db_dsnw; | |
| 99 | ||
| 100 | $this->db_handle = $this->dsn_connect($dsn); | |
| 101 | $this->db_connected = true; | |
| 102 | } | |
| 103 | ||
| 104 | // Query database (read operations) | |
| 105 | ||
| 106 | function query($query) | |
| 107 | { | |
| 108 | // Read or write ? | |
| 109 | if (strtolower(trim(substr($query,0,6)))=='select') | |
| 110 | $mode='r'; | |
| 111 | else | |
| 112 | $mode='w'; | |
| 113 | ||
| 114 | $this->db_connect($mode); | |
| 115 | ||
| 116 | if ($this->db_provider == 'sqlite') | |
| 117 | $query = $this->_sqlite_prepare_query($query); | |
| 118 | ||
| 119 | $result = $this->db_handle->query($query); | |
| 120 | ||
| 121 | if (PEAR::isError($result)) | |
| 122 | raise_error(array('code' => 500, | |
| 123 | 'type' => 'db', | |
| 124 | 'line' => __LINE__, | |
| 125 | 'file' => __FILE__, | |
| 126 | 'message' => $result->getMessage()), TRUE, FALSE); | |
| 127 | ||
| 128 | return $this->_add_result($result, $query); | |
| 129 | } | |
| 130 | ||
| 131 | function num_rows($res_id=NULL) | |
| 132 | { | |
| 133 | if (!$this->db_handle) | |
| 134 | return FALSE; | |
| 135 | ||
| 136 | $result = $this->_get_result($res_id); | |
| 137 | ||
| 138 | if ($result) | |
| 139 | return $result->numRows(); | |
| 140 | else | |
| 141 | return FALSE; | |
| 142 | } | |
| 143 | ||
| 144 | function affected_rows($res_id=NULL) | |
| 145 | { | |
| 146 | if (!$this->db_handle) | |
| 147 | return FALSE; | |
| 148 | ||
| 149 | return $this->db_handle->affectedRows(); | |
| 150 | } | |
| 151 | ||
| 152 | function insert_id($sequence = '') | |
| 153 | { | |
| 154 | if (!$this->db_handle || $this->db_mode=='r') | |
| 155 | return FALSE; | |
| 156 | ||
| 157 | return $this->db_handle->lastInsertID(); | |
| 158 | } | |
| 159 | ||
| 160 | ||
| 161 | function fetch_assoc($res_id=NULL) | |
| 162 | { | |
| 163 | $result = $this->_get_result($res_id); | |
| 164 | ||
| 165 | if (PEAR::isError($result)) | |
| 166 | { | |
| 167 | raise_error( array('code' => 500, 'type' => 'db', 'line' => __LINE__, 'file' => __FILE__, | |
| 168 | 'message' => $this->db_link->getMessage()), TRUE, FALSE); | |
| 169 | return FALSE; | |
| 170 | } | |
| 171 | ||
| 172 | return $result->fetchRow(MDB2_FETCHMODE_ASSOC); | |
| 173 | } | |
| 174 | ||
| 175 | function _add_result($res, $query) | |
| 176 | { | |
| 177 | // sql error occured | |
| 178 | if (PEAR::isError($res)) | |
| 179 | { | |
| 180 | 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); | |
| 181 | return FALSE; | |
| 182 | } | |
| 183 | else | |
| 184 | { | |
| 185 | $res_id = sizeof($this->a_query_results); | |
| 186 | $this->a_query_results[$res_id] = $res; | |
| 187 | $this->last_res_id = $res_id; | |
| 188 | return $res_id; | |
| 189 | } | |
| 190 | } | |
| 191 | ||
| 192 | ||
| 193 | function _get_result($res_id) | |
| 194 | { | |
| 195 | if ($res_id==NULL) | |
| 196 | $res_id = $this->last_res_id; | |
| 197 | ||
| 198 | if ($res_id && isset($this->a_query_results[$res_id])) | |
| 199 | return $this->a_query_results[$res_id]; | |
| 200 | else | |
| 201 | return FALSE; | |
| 202 | } | |
| 203 | ||
| 204 | ||
| 205 | // create a sqlite database from a file | |
| 206 | function _sqlite_create_database($dbh, $fileName) | |
| 207 | { | |
| 208 | if (empty($fileName) || !is_string($fileName)) | |
| 209 | return ; | |
| 210 | ||
| 211 | $data = ''; | |
| 212 | if ($fd = fopen($fileName, 'r')) | |
| 213 | { | |
| 214 | $data = fread($fd, filesize($fileName)); | |
| 215 | fclose($fd); | |
| 216 | } | |
| 217 | ||
| 218 | if (strlen($data)) | |
| 219 | sqlite_exec($dbh->connection, $data); | |
| 220 | } | |
| 221 | ||
| 222 | // transform a query so that it is sqlite2 compliant | |
| 223 | function _sqlite_prepare_query($query) | |
| 224 | { | |
| 225 | if (!is_string($query)) | |
| 226 | return ($query); | |
| 227 | ||
| 228 | $search = array('/NOW\(\)/', | |
| 229 | '/`/'); | |
| 230 | $replace = array("datetime('now')", | |
| 231 | '"'); | |
| 232 | $query = preg_replace($search, $replace, $query); | |
| 233 | ||
| 234 | return ($query); | |
| 235 | } | |
| 236 | ||
| 237 | } | |
| 238 | ||
| 239 | ?> | |
