<?php /** * EGroupware API - Preferences * * @link http://www.egroupware.org * @author Joseph Engo <jengo@phpgroupware.org> * @author Mark Peters <skeeter@phpgroupware.org> * @author Ralf Becker <RalfBecker-AT-outdoor-training.de> merging prefs on runtime, session prefs and reworked the class * Copyright (C) 2000, 2001 Joseph Engo * @license http://opensource.org/licenses/lgpl-license.php LGPL - GNU Lesser General Public License * @package api * @version $Id$ */ /** * preferences class used for setting application preferences * * preferences are read into following arrays: * - $data effective prefs used everywhere in EGroupware * Effective prefs are merged together in following precedence from: * - $forced forced preferences set by the admin, they take precedence over user or default prefs * - $session temporary prefs eg. language set on login just for session * - $user the stored user prefs, only used for manipulating and storeing the user prefs * - $group the stored prefs of all group-memberships of current user, can NOT be deleted or stored directly! * - $default the default preferences, always used when the user has no own preference set * * To update the prefs of a certain group, not just the primary group of the user, you have to * create a new instance of preferences class, with the given id of the group. This takes into * account the offset of DEFAULT_ID, we are using currently for groups (as -1, and -2) are already * taken! * * Preferences get now json-encoded and no longer PHP serialized and addslashed, * thought they only change when they get updated. */ class preferences { /** * account_id for default prefs */ const DEFAULT_ID = -2; /** * account_id for forced prefs */ const FORCED_ID = -1; /** * account the class is instanciated for * @var int */ var $account_id; /** * account-type u or g * @var string */ var $account_type; /** * effectiv user prefs, used by all apps * @var array */ var $data = array(); /** * set user prefs for saveing (no defaults/forced prefs merged) * @var array */ var $user = array(); /** * primary group prefs * @var array */ var $group = array(); /** * default prefs * @var array */ var $default = array(); /** * forced prefs * @var array */ var $forced = array(); /** * session / tempory prefs * @var array */ var $session = array(); /** * @var egw_db */ var $db; /** * table-name */ const TABLE = 'egw_preferences'; var $table = self::TABLE; var $values,$vars; // standard notify substitues, will be set by standard_substitues() /** * Contstructor * * @param int|string $account_id ='' * @return preferences */ function __construct($account_id = '') { if (isset($GLOBALS['egw']->db)) { $this->db = $GLOBALS['egw']->db; } else { $this->db = $GLOBALS['egw_setup']->db; $this->table = $GLOBALS['egw_setup']->prefs_table; } $this->set_account_id($account_id); } /** * Set account_id for class * * Takes care of offset for groups. * * @param int|string $account_id numeric account_id, "default", "forced" to load default or forced preferences * or account_lid (only if !== "default" or "forced"!) */ function set_account_id($account_id) { if ($account_id === 'default') { $this->account_id = self::DEFAULT_ID; } elseif ($account_id === 'forced') { $this->account_id = self::FORCED_ID; } // if we got instancated for a group, need to set offset of DEFAULT_ID! elseif ($account_id < 0 || !is_numeric($account_id) && ($account_id = get_account_id($account_id)) < 0) { $this->account_id = $account_id + self::DEFAULT_ID; } else { $this->account_id = $account_id; } //error_log(__METHOD__."($account_id) setting this->account_id to $this->account_id"); } /** * Return account_id class is instanciated for or "default" or "forced" * * Takes care of offset for groups. * * @return string|int */ function get_account_id() { switch ($this->account_id) { case self::DEFAULT_ID: return 'default'; case self::FORCED_ID: return 'forced'; } return $this->account_id < self::DEFAULT_ID ? $this->account_id-self::DEFAULT_ID : $this->account_id; } /** * Old PHP4 contstructor * * @param int|string $account_id ='' * @return preferences * @deprecated */ function preferences($account_id = '') { self::__construct($account_id); } /** * Magic function to avoid storing perferences in session, as they get re-read on each request by egw_session::verify() * * @return array with class vars to store */ function __sleep() { $vars = array_keys(get_object_vars($this)); return array_diff($vars, array('data', 'user', 'group', 'default', 'forced', 'session')); } /** * Lifetime in seconds of cached items 1d */ const CACHE_LIFETIME = 86400; /** * Read preferences of requested id(s) * * @param int|array $ids * @return array id => app => preference data */ function cache_read($ids) { $prefs = egw_cache::getInstance(__CLASS__, $ids); $db_read = array(); foreach((array)$ids as $id) { // if prefs are not returned, null or not an array, read them from db if (!isset($prefs[$id]) && !is_array($prefs[$id])) $db_read[] = $id; } if ($db_read) { foreach($this->db->select($this->table,'*',array('preference_owner' => $db_read),__LINE__,__FILE__) as $row) { // The following replacement is required for PostgreSQL to work $app = trim($row['preference_app']); $prefs[$row['preference_owner']][$app] = self::unserialize($row['preference_value']); } foreach($db_read as $id) { if (!isset($prefs[$id])) $prefs[$id] = array(); egw_cache::setInstance(__CLASS__, $id, $prefs[$id]); } } //error_log(__METHOD__.'('.array2string($ids).') read-from-db='.array2string($db_read)); return $prefs; } /** * parses a notify and replaces the substitutes * * @param string $msg message to parse / substitute * @param array $values =array() extra vars to replace in addition to $this->values, vars are in an array with \ * $key => $value pairs, $key does not include the $'s and is the *untranslated* name * @param boolean $use_standard_values =true should the standard values are used * @return string with parsed notify-msg */ function parse_notify($msg,$values=array(),$use_standard_values=True) { $vals = $values ? $values : array(); if ($use_standard_values && is_array($this->values)) { $vals += $this->values; } $replace = $with = array(); foreach($vals as $key => $val) { if ($this->debug) error_log(__METHOD__." replacing \$\$$key\$\$ with $val "); $replace[] = '$$'.$key.'$$'; $with[] = $val; } return str_replace($replace,$with,$msg); } /** * replaces the english key's with translated ones, or if $un_lang the opposite * * @param string $msg message to translate * @param array $vals =array() extra vars to replace in addition to $this->values, vars are in an array with \ * $key => $value pairs, $key does not include the $'s and is the *untranslated* name * @param boolean $un_lang =false if true translate back * @return string */ function lang_notify($msg,$vals=array(),$un_lang=False) { foreach(array_keys($vals) as $key) { $lname = ($lname = lang($key)) == $key.'*' ? $key : $lname; if ($un_lang) { $langs[$lname] = '$$'.$key.'$$'; } else { $langs[$key] = '$$'.$lname.'$$'; } } return $this->parse_notify($msg,$langs,False); } /** * define some standard substitues-values and use them on the prefs, if needed */ function standard_substitutes() { if ($this->debug) error_log(__METHOD__." is called "); if (!is_array(@$GLOBALS['egw_info']['user']['preferences'])) { $GLOBALS['egw_info']['user']['preferences'] = $this->data; // else no lang() } // we cant use phpgw_info/user/fullname, as it's not set when we run $lid = $fname = $lname = null; $GLOBALS['egw']->accounts->get_account_name($this->account_id,$lid,$fname,$lname); $this->values = array( // standard notify replacements 'fullname' => common::display_fullname('',$fname,$lname), 'firstname' => $fname, 'lastname' => $lname, 'domain' => $GLOBALS['egw_info']['server']['mail_suffix'], 'email' => $this->email_address($this->account_id), 'date' => common::show_date('',$GLOBALS['egw_info']['user']['preferences']['common']['dateformat']), ); // do this first, as it might be already contain some substitues // $this->values['email'] = $this->parse_notify($this->values['email']); $this->vars = array( // langs have to be in common !!! 'fullname' => lang('name of the user, eg. "%1"',$this->values['fullname']), 'firstname' => lang('first name of the user, eg. "%1"',$this->values['firstname']), 'lastname' => lang('last name of the user, eg. "%1"',$this->values['lastname']), 'domain' => lang('domain name for mail-address, eg. "%1"',$this->values['domain']), 'email' => lang('email-address of the user, eg. "%1"',$this->values['email']), 'date' => lang('todays date, eg. "%1"',$this->values['date']), ); if ($this->debug) error_log(__METHOD__.print_r($this->vars,true)); // do the substituetion in the effective prefs (data) // foreach($this->data as $app => $data) { if(!is_array($data)) continue; foreach($data as $key => $val) { if (!is_array($val) && strpos($val,'$$') !== False) { $this->data[$app][$key] = $this->parse_notify($val); } elseif (is_array($val)) { foreach($val as $k => $v) { if (!is_array($v) && strpos($v,'$$') !== False) { $this->data[$app][$key][$k] = $this->parse_notify($v); } } } } } } /** * Unserialize data from either json_encode or PHP serialize and addslashes * * @param string $str serialized prefs * @return array */ protected static function unserialize($str) { // handling of new json-encoded prefs if ($str[0] != 'a' && $str[1] != ':') { return json_decode($str, true); } // handling of old PHP serialized and addslashed prefs $data = php_safe_unserialize($str); if($data === false) { // manually retrieve the string lengths of the serialized array if unserialize failed $data = php_safe_unserialize(preg_replace_callback('!s:(\d+):"(.*?)";!s', function($matches) { return 's:'.mb_strlen($matches[2],'8bit').':"'.$matches[2].'";'; }, $str)); } self::unquote($data); return $data; } /** * unquote (stripslashes) recursivly the whole array * * @param array &$arr array to unquote (var-param!) */ protected static function unquote(&$arr) { if (!is_array($arr)) { $arr = stripslashes($arr); return; } foreach($arr as $key => $value) { if (is_array($value)) { self::unquote($arr[$key]); } else { $arr[$key] = stripslashes($value); } } } /** * read preferences from the repository * * the function ready all 3 prefs user/default/forced and merges them to the effective ones * * @param boolean $use_session =true should the session prefs get used (default true) or not (false) * @return array with effective prefs ($this->data) */ function read_repository($use_session=true) { $this->session = $use_session ? egw_cache::getSession('preferences','preferences') : array(); if (!is_array($this->session)) { $this->session = array(); } $this->forced = $this->default = $this->user = $this->group = array(); $to_read = array(self::DEFAULT_ID,self::FORCED_ID,$this->account_id); if ($this->account_id > 0) { $primary_group = accounts::id2name($this->account_id, 'account_primary_group'); foreach((array)$GLOBALS['egw']->accounts->memberships($this->account_id, true) as $gid) { if ($gid != $primary_group) $to_read[] = $gid + self::DEFAULT_ID; // need to offset it with DEFAULT_ID = -2! } $to_read[] = $primary_group + self::DEFAULT_ID; } foreach($this->cache_read($to_read) as $id => $values) { switch($id) { case self::FORCED_ID: $this->forced = $values; break; case self::DEFAULT_ID: $this->default = $values; break; case $this->account_id: // user $this->user = $values; break; default: foreach($values as $app => $vals) { $this->group[$app] = $vals + (array)$this->group[$app]; } break; } } $this->data = $this->user; // let the (temp.) session prefs. override the user prefs. // foreach($this->session as $app => $values) { foreach($values as $var => $value) { $this->data[$app][$var] = $value; } } // now use (primary) group defaults if needed (user-value unset or empty) // foreach((array)$this->group as $app => $values) { foreach((array)$values as $var => $value) { if (!isset($this->data[$app][$var]) || $this->data[$app][$var] === '') { $this->data[$app][$var] = $value; } } } // now use defaults if needed (user-value unset or empty) // foreach((array)$this->default as $app => $values) { foreach((array)$values as $var => $value) { if (!isset($this->data[$app][$var]) || $this->data[$app][$var] === '') { //if ($var=='remote_application_url') error_log(__METHOD__.__LINE__.' default for '.$var.' with '.$value); $this->data[$app][$var] = $value; } } } // now set/force forced values // foreach((array)$this->forced as $app => $values) { foreach((array)$values as $var => $value) { $this->data[$app][$var] = $value; } } // setup the standard substitutes and substitutes the data in $this->data // if ($GLOBALS['egw_info']['flags']['load_translations'] !== false) { $this->standard_substitutes(); } // This is to supress warnings during login if (is_array($this->data)) { reset($this->data); } if (isset($this->debug) && substr($GLOBALS['egw_info']['flags']['currentapp'],0,3) != 'log') { echo 'user<pre>'; print_r($this->user); echo "</pre>\n"; echo 'forced<pre>'; print_r($this->forced); echo "</pre>\n"; echo 'default<pre>'; print_r($this->default); echo "</pre>\n"; echo 'group<pre>'; print_r($this->group); echo "</pre>\n"; echo 'effectiv<pre>'; print_r($this->data); echo "</pre>\n"; } $this->check_set_tz_offset(); return $this->data; } /** * Get default preferences (also taking forced preferences into account!) * * @param string $app =null * @param string $name =null * @return mixed */ function default_prefs($app=null,$name=null) { // boetemplate::complete_array_merge() is identical to PHP >= 5.3 array_replace_recursive() $default = boetemplate::complete_array_merge($this->default, $this->forced); if ($app) $default = $default[$app]; if ($name && is_array($default)) $default = $default[$name]; return $default; } /** * Checking new timezone ('tz') pref and setting old tz_offset pref from it * */ function check_set_tz_offset() { $prefs =& $GLOBALS['egw_info']['user']['preferences']['common']; if (!empty($prefs['tz'])) { egw_time::setUserPrefs($prefs['tz'],$prefs['dateformat'],$prefs['timeformat']); // set the old preference for compatibilty with old code $prefs['tz_offset'] = egw_time::tz_offset_s()/3600; //echo "<p>".__METHOD__."() tz=$prefs[tz] --> tz_offset=$prefs[tz_offset]</p>\n"; // ToDo: get rid of that if (isset($GLOBALS['egw']) && ($GLOBALS['egw'] instanceof egw)) { $GLOBALS['egw']->unset_datetime(); // to force an update } } } /** * Set user timezone, if we get restored from session * */ function __wakeup() { $this->check_set_tz_offset(); } /** * read preferences from repository and stores in an array * * @return array containing the effective user preferences */ function read() { if (count($this->data) == 0) { $this->read_repository(); } reset ($this->data); return $this->data; } /** * add preference to $app_name a particular app * * the effective prefs ($this->data) are updated to reflect the change * * @param string $app_name name of the app * @param string $var name of preference to be stored * @param mixed $value ='##undef##' value of the preference, if not given $GLOBALS[$var] is used * @param string $type ='user' of preference to set: forced, default, user * @return array with new effective prefs (even when forced or default prefs are set !) */ function add($app_name,$var,$value = '##undef##',$type='user') { //echo "<p>add('$app_name','$var','$value')</p>\n"; if ($value === '##undef##') { $value = $GLOBALS[$var]; } switch ($type) { case 'session': if (!isset($this->forced[$app_name][$var]) || $this->forced[$app_name][$var] === '') { $this->session[$app_name][$var] = $this->data[$app_name][$var] = $value; $GLOBALS['egw']->session->appsession('preferences','preferences',$this->session); if (method_exists($GLOBALS['egw'],'invalidate_session_cache')) // egw object in setup is limited { $GLOBALS['egw']->invalidate_session_cache(); // in case with cache the egw_info array in the session } } break; case 'forced': $this->data[$app_name][$var] = $this->forced[$app_name][$var] = $value; break; case 'default': $this->default[$app_name][$var] = $value; if ((!isset($this->forced[$app_name][$var]) || $this->forced[$app_name][$var] === '') && (!isset($this->user[$app_name][$var]) || $this->user[$app_name][$var] === '')) { $this->data[$app_name][$var] = $value; } break; case 'user': default: $this->user[$app_name][$var] = $value; if (!isset($this->forced[$app_name][$var]) || $this->forced[$app_name][$var] === '') { $this->data[$app_name][$var] = $value; } break; } reset($this->data); return $this->data; } /** * delete preference from $app_name * * the effektive prefs ($this->data) are updated to reflect the change * * @param string $app_name name of app * @param string $var =false variable to be deleted * @param string $type ='user' of preference to set: forced, default, user * @return array with new effective prefs (even when forced or default prefs are deleted!) */ function delete($app_name, $var = False,$type = 'user') { //echo "<p>delete('$app_name','$var','$type')</p>\n"; $set_via = array( 'forced' => array('user','default'), 'default' => array('forced','user'), 'user' => array('forced','group','default'), 'group' => array('forced'), ); if (!isset($set_via[$type])) { $type = 'user'; } $pref = &$this->$type; if (($all = empty($var))) // to check if $var is regarded as empty (false, 0, '', null, array() should do the trick { unset($pref[$app_name]); unset($this->data[$app_name]); } else { unset($pref[$app_name][$var]); unset($this->data[$app_name][$var]); } // set the effectiv pref again if needed // foreach ($set_via[$type] as $set_from) { $arr = &$this->$set_from; if ($all) { if (isset($arr[$app_name])) { $this->data[$app_name] = $arr[$app_name]; break; } } else { if($var && @isset($arr[$app_name][$var]) && $arr[$app_name][$var] !== '') { $this->data[$app_name][$var] = $arr[$app_name][$var]; break; } } unset($arr); } reset ($this->data); return $this->data; } /** * delete all prefs of a given user * * @param int $accountid */ function delete_user($accountid) { if ($accountid > 0) { $this->db->delete($this->table,array('preference_owner' => $accountid),__LINE__,__FILE__); egw_cache::unsetInstance(__CLASS__, $accountid); } } /** * delete all prefs of a given group * * @param int $accountid */ function delete_group($accountid) { if ($accountid < 0) { $this->db->delete($this->table,array('preference_owner' => $accountid+self::DEFAULT_ID),__LINE__,__FILE__); egw_cache::unsetInstance(__CLASS__, $accountid+self::DEFAULT_ID); } } /** * Change single value in preferences of all users (incl. groups, default and forced) * * @param string $app * @param string $name * @param string $value new value to set, or null or '' to delete it * @param string $old_value if given, only change if that's current value * @param string $type if given limit to "user", "forced", "default", "group" */ public static function change_preference($app, $name, $value, $old_value=null, $type=null) { $db = isset($GLOBALS['egw_setup']->db) ? $GLOBALS['egw_setup']->db : $GLOBALS['egw']->db; $where = array( 'preference_app' => $app, ); switch($type) { case 'forced': $where['preference_owner'] = self::FORCED_ID; break; case 'default': $where['preference_owner'] = self::DEFAULT_ID; break; case 'user': $where[] = 'preference_owner > 0'; break; case 'group': $where[] = 'preference_owner < '.self::DEFAULT_ID; break; } foreach($db->select(self::TABLE, '*', $where, __LINE__, __FILE__) as $row) { $prefs = self::unserialize($row['preference_value']); if (isset($old_value) && $prefs[$name] != $old_value) continue; if ((string)$value !== '') { $prefs[$name] = $value; } else { unset($prefs[$name]); } $db->update(self::TABLE, array( 'preference_value' => json_encode($prefs), ), array( 'preference_owner' => $row['preference_owner'], 'preference_app' => $row['preference_app'], ), __LINE__, __FILE__); // update instance-wide cache $cached = egw_cache::getInstance(__CLASS__, $row['preference_owner']); if($cached && $cached[$row['preference_app']]) { $cached[$row['preference_app']] = $prefs; egw_cache::setInstance(__CLASS__, $row['preference_owner'], $cached); } } } /** * Completely delete the specified preference name from all users * * @param string $app Application name * @param string $name Preference name * @param string $type ='user' of preference to set: forced, default, user */ public static function delete_preference($app, $name, $type='user') { self::change_preference($app, $name, null, null, $type); } /** * Copy preferences from one app to an other * * @param string $from_app * @param string $to_app * @param array $names =null array of names to copy or null for all */ public static function copy_preferences($from_app, $to_app, array $names=null) { //error_log(__METHOD__."('$from_app', '$to_app', ".array2string($names).')'); $db = isset($GLOBALS['egw_setup']->db) ? $GLOBALS['egw_setup']->db : $GLOBALS['egw']->db; foreach($db->select(self::TABLE, '*', array('preference_app' => $from_app), __LINE__, __FILE__) as $row) { $prefs = self::unserialize($row['preference_value']); if ($names) { $prefs = array_intersect_key($prefs, array_flip($names)); } if (!$prefs) continue; // nothing to change, as nothing set $row['preference_app'] = $to_app; unset($row['preference_value']); if (($values = $db->select(self::TABLE, 'preference_value', $row, __LINE__, __FILE__)->fetchColumn())) { $prefs = array_merge(self::unserialize($values), $prefs); } //error_log(__LINE__.': '.__METHOD__."() inserting app=$row[preference_app], owner=$row[preference_owner]: ".array2string($prefs)); $db->insert(self::TABLE, array( 'preference_value' => json_encode($prefs) ), $row, __LINE__, __FILE__); // update instance-wide cache if (($cached = egw_cache::getInstance(__CLASS__, $row['prefences_owner']))) { $cached[$from_app] = $prefs; egw_cache::setInstance(__CLASS__, $row['preference_owner'], $cached); } } } /** * Save the the preferences to the repository * * User prefs for saveing are in $this->user not in $this->data, which are the effectiv prefs only! * * @param boolean $update_session_info =false old param, seems not to be used (not used anymore) * @param string $type ='user' which prefs to update: user/default/forced * @param boolean $invalid_cache =true should we invalidate the cache, default true (not used anymore) * @return array with new effective prefs (even when forced or default prefs are deleted!) */ function save_repository($update_session_info = False,$type='user',$invalid_cache=true) { unset($update_session_info, $invalid_cache); // no longer used switch($type) { case 'forced': $account_id = self::FORCED_ID; $prefs = &$this->forced; break; case 'default': $account_id = self::DEFAULT_ID; $prefs = &$this->default; break; case 'group': throw new egw_exception_wrong_parameter("Can NOT save group preferences, as they are from multiple groups!"); default: $account_id = (int)$this->account_id; $prefs = &$this->user; // we use the user-array as data contains default values too break; } //echo "<p>preferences::save_repository(,$type): account_id=$account_id, prefs="; print_r($prefs); echo "</p>\n"; if (isset($GLOBALS['egw_setup']) || !$GLOBALS['egw']->acl->check('session_only_preferences',1,'preferences') && (!($old_prefs = $this->cache_read($account_id)) || $old_prefs != $prefs)) { //error_log(__METHOD__."(type=$type) saved, because old_prefs[$account_id] != prefs=".array2string($prefs)); $changed = 0; foreach($prefs as $app => $value) { // check if app preferences have changed, if not no need to save them if ($old_prefs && $old_prefs[$app] == $value) continue; if (!$changed++) $this->db->transaction_begin(); if (!is_array($value) || !$value) { $this->db->delete($this->table, array( 'preference_owner' => $account_id, 'preference_app' => $app, ), __LINE__, __FILE__); unset($prefs[$app]); } else { $this->db->insert($this->table,array( 'preference_value' => json_encode($value), ),array( 'preference_owner' => $account_id, 'preference_app' => $app, ),__LINE__,__FILE__); } } if ($changed) { $this->db->transaction_commit(); // update instance-wide cache egw_cache::setInstance(__CLASS__, $account_id, $prefs); } } //else error_log(__METHOD__."(type=$type) NOT saved because old_prefs[$account_id] == prefs=".array2string($prefs)); return $this->data; } /** * @deprecated use add */ function change($app_name,$var,$value = "") { return $this->add($app_name,$var,$value); } /** * returns the custom email-address (if set) or generates a default one * * This will generate the appropriate email address used as the "From:" * email address when the user sends email, the localpert * part. The "personal" * part is generated elsewhere. * In the absence of a custom ['email']['address'], this function should be used to set it. * * @access public * @param int $account_id as determined in and/or passed to "create_email_preferences" * @return string with email-address */ function email_address($account_id='') { if (isset($this->data['email']['address'])) { return $this->data['email']['address']; } // if email-address is set in the account, return it if (($email = $GLOBALS['egw']->accounts->id2name($account_id,'account_email'))) { return $email; } $prefs_email_address = $GLOBALS['egw']->accounts->id2name($account_id); if (strpos($prefs_email_address,'@') === False) { $prefs_email_address .= '@' . $GLOBALS['egw_info']['server']['mail_suffix']; } return $prefs_email_address; } }