| 1 | <?php |
| 2 | /** |
| 3 | ** db_prefs.php |
| 4 | ** |
| 5 | ** This contains functions for manipulating user preferences |
| 6 | ** stored in a database, accessed though the Pear DB layer. |
| 7 | ** |
| 8 | ** To use this instead of the regular prefs.php, create a |
| 9 | ** database as described below, and replace prefs.php |
| 10 | ** with this file. |
| 11 | ** |
| 12 | ** Database: |
| 13 | ** --------- |
| 14 | ** |
| 15 | ** The preferences table should have tree columns: |
| 16 | ** username char \ primary |
| 17 | ** prefkey char / key |
| 18 | ** prefval blob |
| 19 | ** |
| 20 | ** CREATE TABLE userprefs (user CHAR(32) NOT NULL DEFAULT '', |
| 21 | ** prefkey CHAR(64) NOT NULL DEFAULT '', |
| 22 | ** prefval BLOB NOT NULL DEFAULT '', |
| 23 | ** primary key (user,prefkey)); |
| 24 | ** |
| 25 | ** Configuration of databasename, username and password is done |
| 26 | ** by changing $DSN below. |
| 27 | ** |
| 28 | ** $Id$ |
| 29 | **/ |
| 30 | |
| 31 | if (defined('prefs_php')) |
| 32 | return; |
| 33 | define('prefs_php', true); |
| 34 | |
| 35 | require_once('DB.php'); |
| 36 | |
| 37 | class dbPrefs { |
| 38 | var $DSN = 'mysql://user@host/database'; |
| 39 | var $table = 'userprefs'; |
| 40 | |
| 41 | var $dbh = NULL; |
| 42 | var $error = NULL; |
| 43 | |
| 44 | var $default = Array('chosen_theme' => '../themes/default_theme.php', |
| 45 | 'show_html_default' => '0'); |
| 46 | |
| 47 | function dbPrefs() { |
| 48 | $this->open(); |
| 49 | } |
| 50 | |
| 51 | function open() { |
| 52 | if(isset($this->dbh)) return true; |
| 53 | $dbh = DB::connect($this->DSN, true); |
| 54 | |
| 55 | if(DB::isError($dbh) || DB::isWarning($dbh)) { |
| 56 | $this->error = DB::errorMessage($dbh); |
| 57 | return false; |
| 58 | } |
| 59 | |
| 60 | $this->dbh = $dbh; |
| 61 | return true; |
| 62 | } |
| 63 | |
| 64 | |
| 65 | function failQuery($res = NULL) { |
| 66 | if($res == NULL) { |
| 67 | printf(_("Preference database error (%s). Exiting abnormally"), |
| 68 | $this->error); |
| 69 | } else { |
| 70 | printf(_("Preference database error (%s). Exiting abnormally"), |
| 71 | DB::errorMessage($res)); |
| 72 | } |
| 73 | exit; |
| 74 | } |
| 75 | |
| 76 | |
| 77 | function getKey($user, $key) { |
| 78 | $this->open(); |
| 79 | $query = sprintf("SELECT prefval FROM %s ". |
| 80 | "WHERE user='%s' AND prefkey='%s'", |
| 81 | $this->table, |
| 82 | $this->dbh->quoteString($user), |
| 83 | $this->dbh->quoteString($key)); |
| 84 | |
| 85 | $res = $this->dbh->query($query); |
| 86 | if(DB::isError($res)) |
| 87 | $this->failQuery($res); |
| 88 | |
| 89 | if($row = $res->fetchRow(DB_FETCHMODE_ASSOC)) { |
| 90 | return $row['prefval']; |
| 91 | } else { |
| 92 | if(isset($this->default[$key])) { |
| 93 | return $this->default[$key]; |
| 94 | } else { |
| 95 | return ''; |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | return ''; |
| 100 | } |
| 101 | |
| 102 | function deleteKey($user, $key) { |
| 103 | $this->open(); |
| 104 | $query = sprintf("DELETE FROM %s WHERE user='%s' AND prefkey='%s'", |
| 105 | $this->table, |
| 106 | $this->dbh->quoteString($user), |
| 107 | $this->dbh->quoteString($key)); |
| 108 | |
| 109 | $res = $this->dbh->simpleQuery($query); |
| 110 | if(DB::isError($res)) |
| 111 | $this->failQuery($res); |
| 112 | |
| 113 | if(substr($key, 0, 9) == 'highlight') { |
| 114 | $this->renumberHighlightList($user); |
| 115 | } |
| 116 | |
| 117 | return true; |
| 118 | } |
| 119 | |
| 120 | function setKey($user, $key, $value) { |
| 121 | $this->open(); |
| 122 | $query = sprintf("REPLACE INTO %s (user,prefkey,prefval) ". |
| 123 | "VALUES('%s','%s','%s')", |
| 124 | $this->table, |
| 125 | $this->dbh->quoteString($user), |
| 126 | $this->dbh->quoteString($key), |
| 127 | $this->dbh->quoteString($value)); |
| 128 | |
| 129 | $res = $this->dbh->simpleQuery($query); |
| 130 | if(DB::isError($res)) |
| 131 | $this->failQuery($res); |
| 132 | |
| 133 | return true; |
| 134 | } |
| 135 | |
| 136 | |
| 137 | /** |
| 138 | ** When a highlight option is deleted the preferences module |
| 139 | ** must renumber the list. This should be done somewhere else, |
| 140 | ** but it is not, so.... |
| 141 | **/ |
| 142 | function renumberHighlightList($user) { |
| 143 | $this->open(); |
| 144 | $query = sprintf("SELECT * FROM %s WHERE user='%s' ". |
| 145 | "AND prefkey LIKE 'highlight%%' ORDER BY prefkey", |
| 146 | $this->table, |
| 147 | $this->dbh->quoteString($user)); |
| 148 | |
| 149 | $res = $this->dbh->query($query); |
| 150 | if(DB::isError($res)) |
| 151 | $this->failQuery($res); |
| 152 | |
| 153 | // Store old data in array |
| 154 | $rows = Array(); |
| 155 | while($row = $res->fetchRow(DB_FETCHMODE_ASSOC)) |
| 156 | $rows[] = $row; |
| 157 | |
| 158 | // Renumber keys of old data |
| 159 | $hilinum = 0; |
| 160 | for($i = 0; $i < count($rows) ; $i++) { |
| 161 | $oldkey = $rows[$i]['prefkey']; |
| 162 | $newkey = substr($oldkey, 0, 9) . $hilinum; |
| 163 | $hilinum++; |
| 164 | |
| 165 | if($oldkey != $newkey) { |
| 166 | $query = sprintf("UPDATE %s SET prefkey='%s' WHERE user='%s' ". |
| 167 | "AND prefkey='%s'", |
| 168 | $this->table, |
| 169 | $this->dbh->quoteString($newkey), |
| 170 | $this->dbh->quoteString($user), |
| 171 | $this->dbh->quoteString($oldkey)); |
| 172 | |
| 173 | $res = $this->dbh->simpleQuery($query); |
| 174 | if(DB::isError($res)) |
| 175 | $this->failQuery($res); |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | return; |
| 180 | } |
| 181 | |
| 182 | } // end class dbPrefs |
| 183 | |
| 184 | |
| 185 | /** returns the value for the pref $string **/ |
| 186 | function getPref($data_dir, $username, $string, $default ) { |
| 187 | $db = new dbPrefs; |
| 188 | if(isset($db->error)) { |
| 189 | printf(_("Preference database error (%s). Exiting abnormally"), |
| 190 | $db->error); |
| 191 | exit; |
| 192 | } |
| 193 | |
| 194 | return $db->getKey($username, $string); |
| 195 | } |
| 196 | |
| 197 | /** Remove the pref $string **/ |
| 198 | function removePref($data_dir, $username, $string) { |
| 199 | $db = new dbPrefs; |
| 200 | if(isset($db->error)) $db->failQuery(); |
| 201 | |
| 202 | $db->deleteKey($username, $string); |
| 203 | return; |
| 204 | } |
| 205 | |
| 206 | /** sets the pref, $string, to $set_to **/ |
| 207 | function setPref($data_dir, $username, $string, $set_to) { |
| 208 | $db = new dbPrefs; |
| 209 | if(isset($db->error)) |
| 210 | $db->failQuery(); |
| 211 | |
| 212 | $db->setKey($username, $string, $set_to); |
| 213 | return; |
| 214 | } |
| 215 | |
| 216 | /** This checks if the prefs are available **/ |
| 217 | function checkForPrefs($data_dir, $username) { |
| 218 | $db = new dbPrefs; |
| 219 | if(isset($db->error)) |
| 220 | $db->failQuery(); |
| 221 | } |
| 222 | |
| 223 | /** Writes the Signature **/ |
| 224 | function setSig($data_dir, $username, $string) { |
| 225 | $db = new dbPrefs; |
| 226 | if(isset($db->error)) |
| 227 | $db->failQuery(); |
| 228 | |
| 229 | $db->setKey($username, "___signature___", $string); |
| 230 | return; |
| 231 | } |
| 232 | |
| 233 | /** Gets the signature **/ |
| 234 | function getSig($data_dir, $username) { |
| 235 | $db = new dbPrefs; |
| 236 | if(isset($db->error)) |
| 237 | $db->failQuery(); |
| 238 | |
| 239 | return $db->getKey($username, "___signature___"); |
| 240 | } |
| 241 | |
| 242 | ?> |