<?php
- /**
- ** db_prefs.php
- **
- ** This contains functions for manipulating user preferences
- ** stored in a database, accessed though the Pear DB layer.
- **
- ** To use this instead of the regular prefs.php, create a
- ** database as described below, and replace prefs.php
- ** with this file.
- **
- ** Database:
- ** ---------
- **
- ** The preferences table should have tree columns:
- ** username char \ primary
- ** prefkey char / key
- ** prefval blob
- **
- ** CREATE TABLE userprefs (user CHAR(32) NOT NULL DEFAULT '',
- ** prefkey CHAR(64) NOT NULL DEFAULT '',
- ** prefval BLOB NOT NULL DEFAULT '',
- ** primary key (user,prefkey));
- **
- ** Configuration of databasename, username and password is done
- ** by changing $DSN below.
- **
- ** $Id$
- **/
-
- require_once('DB.php');
-
- class dbPrefs {
- var $DSN = 'mysql://user@host/database';
- var $table = 'userprefs';
-
- var $dbh = NULL;
- var $error = NULL;
-
- var $default = Array('chosen_theme' => '../themes/default_theme.php',
- 'show_html_default' => '0');
-
- function dbPrefs() {
- $this->open();
- }
-
- function open() {
- if(isset($this->dbh)) return true;
- $dbh = DB::connect($this->DSN, true);
-
- if(DB::isError($dbh) || DB::isWarning($dbh)) {
+
+/**
+ * db_prefs.php
+ *
+ * This contains functions for manipulating user preferences
+ * stored in a database, accessed though the Pear DB layer.
+ *
+ * Database:
+ *
+ * The preferences table should have three columns:
+ * user char \ primary
+ * prefkey char / key
+ * prefval blob
+ *
+ * CREATE TABLE userprefs (user CHAR(128) NOT NULL DEFAULT '',
+ * prefkey CHAR(64) NOT NULL DEFAULT '',
+ * prefval BLOB NOT NULL DEFAULT '',
+ * primary key (user,prefkey));
+ *
+ * Configuration of databasename, username and password is done
+ * by using conf.pl or the administrator plugin
+ *
+ * @copyright © 1999-2005 The SquirrelMail Project Team
+ * @license http://opensource.org/licenses/gpl-license.php GNU Public License
+ * @version $Id$
+ * @package squirrelmail
+ * @subpackage prefs
+ * @since 1.1.3
+ */
+
+/** @ignore */
+if (!defined('SM_PATH')) define('SM_PATH','../');
+
+/** Unknown database */
+define('SMDB_UNKNOWN', 0);
+/** MySQL */
+define('SMDB_MYSQL', 1);
+/** PostgreSQL */
+define('SMDB_PGSQL', 2);
+
+require_once(SM_PATH . 'config/config.php');
+if (!include_once('DB.php')) {
+ // same error also in abook_database.php
+ require_once(SM_PATH . 'functions/display_messages.php');
+ $error = _("Could not include PEAR database functions required for the database backend.") . "<br />\n";
+ $error .= sprintf(_("Is PEAR installed, and is the include path set correctly to find %s?"),
+ '<tt>DB.php</tt>') . "<br />\n";
+ $error .= _("Please contact your system administrator and report this error.");
+ error_box($error, $color);
+ exit;
+}
+
+global $prefs_are_cached, $prefs_cache;
+
+/**
+ * @ignore
+ */
+function cachePrefValues($username) {
+ global $prefs_are_cached, $prefs_cache;
+
+ sqgetGlobalVar('prefs_are_cached', $prefs_are_cached, SQ_SESSION );
+ if ($prefs_are_cached) {
+ sqgetGlobalVar('prefs_cache', $prefs_cache, SQ_SESSION );
+ return;
+ }
+
+ sqsession_unregister('prefs_cache');
+ sqsession_unregister('prefs_are_cached');
+
+ $db = new dbPrefs;
+ if(isset($db->error)) {
+ printf( _("Preference database error (%s). Exiting abnormally"),
+ $db->error);
+ exit;
+ }
+
+ $db->fillPrefsCache($username);
+ if (isset($db->error)) {
+ printf( _("Preference database error (%s). Exiting abnormally"),
+ $db->error);
+ exit;
+ }
+
+ $prefs_are_cached = true;
+
+ sqsession_register($prefs_cache, 'prefs_cache');
+ sqsession_register($prefs_are_cached, 'prefs_are_cached');
+}
+
+/**
+ * Class used to handle connections to prefs database and operations with preferences
+ * @package squirrelmail
+ * @subpackage prefs
+ * @since 1.1.3
+ */
+class dbPrefs {
+ /**
+ * Table used to store preferences
+ * @var string
+ */
+ var $table = 'userprefs';
+ /**
+ * Field used to store owner of preference
+ * @var string
+ */
+ var $user_field = 'user';
+ /**
+ * Field used to store preference name
+ * @var string
+ */
+ var $key_field = 'prefkey';
+ /**
+ * Field used to store preference value
+ * @var string
+ */
+ var $val_field = 'prefval';
+
+ /**
+ * Database connection object
+ * @var object
+ */
+ var $dbh = NULL;
+ /**
+ * Error messages
+ * @var string
+ */
+ var $error = NULL;
+ /**
+ * Database type (SMDB_* constants)
+ * Is used in setKey().
+ * @var integer
+ */
+ var $db_type = SMDB_UNKNOWN;
+
+ /**
+ * Default preferences
+ * @var array
+ */
+ var $default = Array('theme_default' => 0,
+ 'show_html_default' => '0');
+
+ /**
+ * Preference owner field size
+ * @var integer
+ * @since 1.5.1
+ */
+ var $user_size = 128;
+ /**
+ * Preference key field size
+ * @var integer
+ * @since 1.5.1
+ */
+ var $key_size = 64;
+ /**
+ * Preference value field size
+ * @var integer
+ * @since 1.5.1
+ */
+ var $val_size = 65536;
+
+ /**
+ * initialize DB connection object
+ * @return boolean true, if object is initialized
+ */
+ function open() {
+ global $prefs_dsn, $prefs_table;
+ global $prefs_user_field, $prefs_key_field, $prefs_val_field;
+ global $prefs_user_size, $prefs_key_size, $prefs_val_size;
+
+ if(isset($this->dbh)) {
+ return true;
+ }
+
+ if (preg_match('/^mysql/', $prefs_dsn)) {
+ $this->db_type = SMDB_MYSQL;
+ } elseif (preg_match('/^pgsql/', $prefs_dsn)) {
+ $this->db_type = SMDB_PGSQL;
+ }
+
+ if (!empty($prefs_table)) {
+ $this->table = $prefs_table;
+ }
+ if (!empty($prefs_user_field)) {
+ $this->user_field = $prefs_user_field;
+ }
+ if (!empty($prefs_key_field)) {
+ $this->key_field = $prefs_key_field;
+ }
+ if (!empty($prefs_val_field)) {
+ $this->val_field = $prefs_val_field;
+ }
+ if (!empty($prefs_user_size)) {
+ $this->user_size = (int) $prefs_user_size;
+ }
+ if (!empty($prefs_key_size)) {
+ $this->key_size = (int) $prefs_key_size;
+ }
+ if (!empty($prefs_val_size)) {
+ $this->val_size = (int) $prefs_val_size;
+ }
+ $dbh = DB::connect($prefs_dsn, true);
+
+ if(DB::isError($dbh)) {
$this->error = DB::errorMessage($dbh);
return false;
}
$this->dbh = $dbh;
return true;
- }
-
+ }
- function failQuery($res = NULL) {
+ /**
+ * Function used to handle database connection errors
+ * @param object PEAR Error object
+ */
+ function failQuery($res = NULL) {
if($res == NULL) {
printf(_("Preference database error (%s). Exiting abnormally"),
- $this->error);
+ $this->error);
} else {
printf(_("Preference database error (%s). Exiting abnormally"),
- DB::errorMessage($res));
+ DB::errorMessage($res));
}
exit;
- }
-
-
- function getKey($user, $key) {
- $this->open();
- $query = sprintf("SELECT prefval FROM %s ".
- "WHERE user='%s' AND prefkey='%s'",
- $this->table,
- $this->dbh->quoteString($user),
- $this->dbh->quoteString($key));
-
- $res = $this->dbh->query($query);
- if(DB::isError($res))
- $this->failQuery($res);
-
- if($row = $res->fetchRow(DB_FETCHMODE_ASSOC)) {
- return $row['prefval'];
+ }
+
+ /**
+ * Get user's prefs setting
+ * @param string $user user name
+ * @param string $key preference name
+ * @param mixed $default (since 1.2.5) default value
+ * @return mixed preference value
+ */
+ function getKey($user, $key, $default = '') {
+ global $prefs_cache;
+
+ cachePrefValues($user);
+
+ if (isset($prefs_cache[$key])) {
+ return $prefs_cache[$key];
} else {
- if(isset($this->default[$key])) {
- return $this->default[$key];
+ if (isset($this->default[$key])) {
+ return $this->default[$key];
} else {
- return '';
+ return $default;
}
}
-
- return '';
- }
-
- function deleteKey($user, $key) {
- $this->open();
- $query = sprintf("DELETE FROM %s WHERE user='%s' AND prefkey='%s'",
- $this->table,
- $this->dbh->quoteString($user),
- $this->dbh->quoteString($key));
+ }
+
+ /**
+ * Delete user's prefs setting
+ * @param string $user user name
+ * @param string $key preference name
+ * @return boolean
+ */
+ function deleteKey($user, $key) {
+ global $prefs_cache;
+
+ if (!$this->open()) {
+ return false;
+ }
+ $query = sprintf("DELETE FROM %s WHERE %s='%s' AND %s='%s'",
+ $this->table,
+ $this->user_field,
+ $this->dbh->quoteString($user),
+ $this->key_field,
+ $this->dbh->quoteString($key));
$res = $this->dbh->simpleQuery($query);
- if(DB::isError($res))
+ if(DB::isError($res)) {
$this->failQuery($res);
-
- if(substr($key, 0, 9) == 'highlight') {
- $this->renumberHighlightList($user);
}
+ unset($prefs_cache[$key]);
+
return true;
- }
+ }
+
+ /**
+ * Set user's preference
+ * @param string $user user name
+ * @param string $key preference name
+ * @param mixed $value preference value
+ * @return boolean
+ */
+ function setKey($user, $key, $value) {
+ if (!$this->open()) {
+ return false;
+ }
- function setKey($user, $key, $value) {
- $this->open();
- $query = sprintf("REPLACE INTO %s (user,prefkey,prefval) ".
- "VALUES('%s','%s','%s')",
- $this->table,
- $this->dbh->quoteString($user),
- $this->dbh->quoteString($key),
- $this->dbh->quoteString($value));
+ /**
+ * Check if username fits into db field
+ */
+ if (strlen($user) > $this->user_size) {
+ $this->error = "Oversized username value."
+ ." Your preferences can't be saved."
+ ." See doc/db-backend.txt or contact your system administrator.";
+
+ /**
+ * Debugging function. Can be used to log all issues that trigger
+ * oversized field errors. Function should be enabled in all three
+ * strlen checks. See http://www.php.net/error-log
+ */
+ // error_log($user.'|'.$key.'|'.$value."\n",3,'/tmp/oversized_log');
+
+ // error is fatal
+ $this->failQuery(null);
+ }
+ /**
+ * Check if preference key fits into db field
+ */
+ if (strlen($key) > $this->key_size) {
+ $err_msg = "Oversized user's preference key."
+ ." Some preferences were not saved."
+ ." See doc/db-backend.txt or contact your system administrator.";
+ // error is not fatal. Only some preference is not saved.
+ trigger_error($err_msg,E_USER_WARNING);
+ return false;
+ }
+ /**
+ * Check if preference value fits into db field
+ */
+ if (strlen($value) > $this->val_size) {
+ $err_msg = "Oversized user's preference value."
+ ." Some preferences were not saved."
+ ." See doc/db-backend.txt or contact your system administrator.";
+ // error is not fatal. Only some preference is not saved.
+ trigger_error($err_msg,E_USER_WARNING);
+ return false;
+ }
- $res = $this->dbh->simpleQuery($query);
- if(DB::isError($res))
- $this->failQuery($res);
- return true;
- }
+ if ($this->db_type == SMDB_MYSQL) {
+ $query = sprintf("REPLACE INTO %s (%s, %s, %s) ".
+ "VALUES('%s','%s','%s')",
+ $this->table,
+ $this->user_field,
+ $this->key_field,
+ $this->val_field,
+ $this->dbh->quoteString($user),
+ $this->dbh->quoteString($key),
+ $this->dbh->quoteString($value));
+ $res = $this->dbh->simpleQuery($query);
+ if(DB::isError($res)) {
+ $this->failQuery($res);
+ }
+ } elseif ($this->db_type == SMDB_PGSQL) {
+ $this->dbh->simpleQuery("BEGIN TRANSACTION");
+ $query = sprintf("DELETE FROM %s WHERE %s='%s' AND %s='%s'",
+ $this->table,
+ $this->user_field,
+ $this->dbh->quoteString($user),
+ $this->key_field,
+ $this->dbh->quoteString($key));
+ $res = $this->dbh->simpleQuery($query);
+ if (DB::isError($res)) {
+ $this->dbh->simpleQuery("ROLLBACK TRANSACTION");
+ $this->failQuery($res);
+ }
+ $query = sprintf("INSERT INTO %s (%s, %s, %s) VALUES ('%s', '%s', '%s')",
+ $this->table,
+ $this->user_field,
+ $this->key_field,
+ $this->val_field,
+ $this->dbh->quoteString($user),
+ $this->dbh->quoteString($key),
+ $this->dbh->quoteString($value));
+ $res = $this->dbh->simpleQuery($query);
+ if (DB::isError($res)) {
+ $this->dbh->simpleQuery("ROLLBACK TRANSACTION");
+ $this->failQuery($res);
+ }
+ $this->dbh->simpleQuery("COMMIT TRANSACTION");
+ } else {
+ $query = sprintf("DELETE FROM %s WHERE %s='%s' AND %s='%s'",
+ $this->table,
+ $this->user_field,
+ $this->dbh->quoteString($user),
+ $this->key_field,
+ $this->dbh->quoteString($key));
+ $res = $this->dbh->simpleQuery($query);
+ if (DB::isError($res)) {
+ $this->failQuery($res);
+ }
+ $query = sprintf("INSERT INTO %s (%s, %s, %s) VALUES ('%s', '%s', '%s')",
+ $this->table,
+ $this->user_field,
+ $this->key_field,
+ $this->val_field,
+ $this->dbh->quoteString($user),
+ $this->dbh->quoteString($key),
+ $this->dbh->quoteString($value));
+ $res = $this->dbh->simpleQuery($query);
+ if (DB::isError($res)) {
+ $this->failQuery($res);
+ }
+ }
- /**
- ** When a highlight option is deleted the preferences module
- ** must renumber the list. This should be done somewhere else,
- ** but it is not, so....
- **/
- function renumberHighlightList($user) {
- $this->open();
- $query = sprintf("SELECT * FROM %s WHERE user='%s' ".
- "AND prefkey LIKE 'highlight%%' ORDER BY prefkey",
- $this->table,
- $this->dbh->quoteString($user));
+ return true;
+ }
+
+ /**
+ * Fill preference cache array
+ * @param string $user user name
+ * @since 1.2.3
+ */
+ function fillPrefsCache($user) {
+ global $prefs_cache;
+
+ if (!$this->open()) {
+ return;
+ }
+ $prefs_cache = array();
+ $query = sprintf("SELECT %s as prefkey, %s as prefval FROM %s ".
+ "WHERE %s = '%s'",
+ $this->key_field,
+ $this->val_field,
+ $this->table,
+ $this->user_field,
+ $this->dbh->quoteString($user));
$res = $this->dbh->query($query);
- if(DB::isError($res))
+ if (DB::isError($res)) {
$this->failQuery($res);
-
- // Store old data in array
- $rows = Array();
- while($row = $res->fetchRow(DB_FETCHMODE_ASSOC))
- $rows[] = $row;
-
- // Renumber keys of old data
- $hilinum = 0;
- for($i = 0; $i < count($rows) ; $i++) {
- $oldkey = $rows[$i]['prefkey'];
- $newkey = substr($oldkey, 0, 9) . $hilinum;
- $hilinum++;
-
- if($oldkey != $newkey) {
- $query = sprintf("UPDATE %s SET prefkey='%s' WHERE user='%s' ".
- "AND prefkey='%s'",
- $this->table,
- $this->dbh->quoteString($newkey),
- $this->dbh->quoteString($user),
- $this->dbh->quoteString($oldkey));
-
- $res = $this->dbh->simpleQuery($query);
- if(DB::isError($res))
- $this->failQuery($res);
- }
}
- return;
- }
+ while ($row = $res->fetchRow(DB_FETCHMODE_ASSOC)) {
+ $prefs_cache[$row['prefkey']] = $row['prefval'];
+ }
+ }
- } // end class dbPrefs
+} /* end class dbPrefs */
- /** returns the value for the pref $string **/
- function getPref($data_dir, $username, $string, $default ) {
- $db = new dbPrefs;
- if(isset($db->error)) {
+/**
+ * returns the value for the pref $string
+ * @ignore
+ */
+function getPref($data_dir, $username, $string, $default = '') {
+ $db = new dbPrefs;
+ if(isset($db->error)) {
printf( _("Preference database error (%s). Exiting abnormally"),
- $db->error);
+ $db->error);
exit;
- }
-
- return $db->getKey($username, $string);
- }
-
- /** Remove the pref $string **/
- function removePref($data_dir, $username, $string) {
- $db = new dbPrefs;
- if(isset($db->error)) $db->failQuery();
-
- $db->deleteKey($username, $string);
- return;
- }
-
- /** sets the pref, $string, to $set_to **/
- function setPref($data_dir, $username, $string, $set_to) {
- $db = new dbPrefs;
- if(isset($db->error))
- $db->failQuery();
-
- $db->setKey($username, $string, $set_to);
- return;
- }
-
- /** This checks if the prefs are available **/
- function checkForPrefs($data_dir, $username) {
- $db = new dbPrefs;
- if(isset($db->error))
- $db->failQuery();
- }
-
- /** Writes the Signature **/
- function setSig($data_dir, $username, $string) {
- $db = new dbPrefs;
- if(isset($db->error))
- $db->failQuery();
-
- $db->setKey($username, "___signature___", $string);
- return;
- }
-
- /** Gets the signature **/
- function getSig($data_dir, $username) {
- $db = new dbPrefs;
- if(isset($db->error))
- $db->failQuery();
-
- return $db->getKey($username, "___signature___");
- }
-
-?>
+ }
+
+ return $db->getKey($username, $string, $default);
+}
+
+/**
+ * Remove the pref $string
+ * @ignore
+ */
+function removePref($data_dir, $username, $string) {
+ global $prefs_cache;
+ $db = new dbPrefs;
+ if(isset($db->error)) {
+ $db->failQuery();
+ }
+
+ $db->deleteKey($username, $string);
+
+ if (isset($prefs_cache[$string])) {
+ unset($prefs_cache[$string]);
+ }
+
+ sqsession_register($prefs_cache , 'prefs_cache');
+ return;
+}
+
+/**
+ * sets the pref, $string, to $set_to
+ * @ignore
+ */
+function setPref($data_dir, $username, $string, $set_to) {
+ global $prefs_cache;
+
+ if (isset($prefs_cache[$string]) && ($prefs_cache[$string] == $set_to)) {
+ return;
+ }
+
+ if ($set_to === '') {
+ removePref($data_dir, $username, $string);
+ return;
+ }
+
+ $db = new dbPrefs;
+ if(isset($db->error)) {
+ $db->failQuery();
+ }
+
+ $db->setKey($username, $string, $set_to);
+ $prefs_cache[$string] = $set_to;
+ assert_options(ASSERT_ACTIVE, 1);
+ assert_options(ASSERT_BAIL, 1);
+ assert ('$set_to == $prefs_cache[$string]');
+ sqsession_register($prefs_cache , 'prefs_cache');
+ return;
+}
+
+/**
+ * This checks if the prefs are available
+ * @ignore
+ */
+function checkForPrefs($data_dir, $username) {
+ $db = new dbPrefs;
+ if(isset($db->error)) {
+ $db->failQuery();
+ }
+}
+
+/**
+ * Writes the Signature
+ * @ignore
+ */
+function setSig($data_dir, $username, $number, $string) {
+ if ($number == "g") {
+ $key = '___signature___';
+ } else {
+ $key = sprintf('___sig%s___', $number);
+ }
+ setPref($data_dir, $username, $key, $string);
+ return;
+}
+
+/**
+ * Gets the signature
+ * @ignore
+ */
+function getSig($data_dir, $username, $number) {
+ if ($number == "g") {
+ $key = '___signature___';
+ } else {
+ $key = sprintf('___sig%d___', $number);
+ }
+ return getPref($data_dir, $username, $key);
+}
+
+// vim: et ts=4
+?>
\ No newline at end of file
projects / squirrelmail.git / blobdiff