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243 lines
8.7 KiB
PHP
243 lines
8.7 KiB
PHP
<?php
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/**
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* Handlers User level alias actions - e.g. add alias, get aliases, update etc.
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*/
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class AliasHandler {
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private $username = null;
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/**
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* @param string $username
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*/
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public function __construct($username) {
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$this->username = strtolower($username);
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}
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/**
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* @return array - list of email addresses the user's mail is forwarded to.
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* (may be an empty list, especially if $CONF['alias_control'] is turned off...)
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* @param boolean - by default we don't return special addresses (e.g. vacation and mailbox alias); pass in true here if you wish to.
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*/
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public function get($all=false) {
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$username = escape_string($this->username);
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$table_alias = table_by_key('alias');
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$sql = "SELECT * FROM $table_alias WHERE address='$username'";
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$result = db_query($sql);
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if($result['rows'] != 1) {
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return false;
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}
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$row = db_array ($result['result']);
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// At the moment Postfixadmin stores aliases in it's database in a comma seperated list; this may change one day.
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$list = explode(',', $row['goto']);
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if($all) {
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$this->return = $list;
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return true;
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}
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$filtered_list = array();
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/* if !$all, remove vacation & mailbox aliases */
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foreach($list as $address) {
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if($address != '' ) {
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if($this->is_vacation_address($address) || $this->is_mailbox_alias($address)) {
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# TODO: store "vacation_active" and "mailbox" status - should be readable public
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}
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else {
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$filtered_list[] = $address;
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}
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}
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}
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$this->return = $filtered_list;
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return true;
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}
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/**
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* @param string $address
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* @param string $username
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* @return boolean true if the username is an alias for the mailbox AND we have alias_control turned off.
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* TODO: comment for @return: does alias_control really matter here?
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*/
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public function is_mailbox_alias($address) {
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global $CONF;
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if($address != $this->username) { # avoid false positives if $address is a mailbox
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return false;
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}
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$table_mailbox = table_by_key('mailbox');
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$E_address = escape_string($address);
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$sql = "SELECT * FROM $table_mailbox WHERE username='$E_address'";
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$result = db_query($sql);
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if($result['rows'] != 1) {
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return false;
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} else {
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return true;
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}
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}
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/**
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* @param string $address
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* @return boolean true if the address contains the vacation domain
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*/
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public function is_vacation_address($address) {
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global $CONF;
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if($CONF['vacation'] == 'YES') {
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if(stripos($address, '@' . $CONF['vacation_domain'])) { # TODO: check full vacation address user#domain.com@vacation_domain
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return true;
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}
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}
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return false;
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}
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/**
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* @return boolean true on success
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* @param string $username
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* @param array $addresses - list of aliases to set for the user.
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* @param string flags - forward_and_store or remote_only or ''
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* @param boolean $vacation_persist - set to false to stop the vacation address persisting across updates
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* Set the user's aliases to those provided. If $addresses ends up being empty the alias record is removed. # TODO: deleting that's buggy behaviour, error out instead
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*/
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public function update($addresses, $flags = '', $vacation_persist=true) {
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// find out if the user is on vacation or not; if they are,
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// then the vacation alias needs adding to the db (as we strip it out in the get method)
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// likewise with the alias_control address.
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# TODO: move all validation from edit-alias/create-alias and users/edit-alias here
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$valid_flags = array('', 'forward_and_store', 'remote_only');
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if(!in_array($flags, $valid_flags)) {
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die("Invalid flag passed into update()... : $flag - valid options are :" . implode(',', $valid_flags));
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}
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$addresses = array_unique($addresses);
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list (/*NULL*/, $domain) = explode('@', $this->username);
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if ( ! $this->get(true) ) die("Alias not existing?"); # TODO: better error behaviour
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foreach($this->return as $address) {
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if($vacation_persist) {
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if($this->is_vacation_address($address)) {
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$addresses[] = $address;
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}
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}
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if($flags != 'remote_only') {
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if($this->is_mailbox_alias($address)) {
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$addresses[] = $address;
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}
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}
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}
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$addresses = array_unique($addresses);
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$new_list = array();
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if($flags == 'remote_only') {
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foreach($addresses as $address) { # TODO: write a remove_from_array function, see http://tech.petegraham.co.uk/2007/03/22/php-remove-values-from-array/
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// strip out our username... if it's in the list given.
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if($address != $this->username) {
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$new_list[] = $address;
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}
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}
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$addresses = $new_list;
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}
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if($flags == 'forward_and_store') {
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if(!in_array($this->username, $addresses)) {
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$addresses[] = $this->username;
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}
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}
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$new_list = array();
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foreach($addresses as $address) {
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if($address != '') {
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$new_list[] = $address; # TODO use remove_from_array, see above
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}
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}
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$addresses = array_unique($new_list);
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$E_username = escape_string($this->username);
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$goto = implode(',', $addresses);
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if(sizeof($addresses) == 0) {
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# $result = db_delete('alias', 'address', $this->username); # '"DELETE FROM $table_alias WHERE address = '$username'"; # TODO: should never happen and causes broken behaviour
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error_log("Alias set to empty / Attemp to delete: " . $this->username); # TODO: more/better error handling - maybe just return false?
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}
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if($this->hasAliasRecord() == false) { # TODO should never happen in update() - see also the comments on handling DELETE above
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$alias_data = array(
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'address' => $this->username,
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'goto' => $goto,
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'domain' => $domain,
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'active' => db_get_boolean(True),
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);
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$result = db_insert('alias', $alias_data);
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} else {
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$alias_data = array(
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'goto' => $goto,
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);
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$result = db_update('alias', 'address', $this->username, $alias_data);
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}
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if($result != 1) {
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return false;
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}
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db_log($this->username, $domain, 'edit_alias', "$E_username -> $goto");
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return true;
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}
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/**
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* Determine whether a local delivery address is present. This is
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* stores as an alias with the same name as the mailbox name (username)
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* @return boolean true if local delivery is enabled
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*/
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public function hasStoreAndForward() {
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$result = $this->get(true); # TODO: error checking?
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if(in_array($this->username, $this->return)) {
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return true;
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}
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return false;
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}
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/**
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* @return boolean true if the user has an alias record (i.e row in alias table); else false.
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*/
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public function hasAliasRecord() {
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$username = escape_string($this->username);
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$table_alias = table_by_key('alias');
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$sql = "SELECT * FROM $table_alias WHERE address = '$username'";
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$result = db_query($sql);
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if($result['rows'] == 1) {
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return true;
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}
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return false;
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}
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/**
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* @param alias address
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* @return true on success false on failure
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*/
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public function delete(){
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if( ! $this->get() ) {
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$this->errormsg[] = 'An alias with that address does not exist.'; # TODO: make translatable
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return false;
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}
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if ($this->is_mailbox_alias($this->username) ) {
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$this->errormsg[] = 'This alias belongs to a mailbox and can\'t be deleted.'; # TODO: make translatable
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return false;
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}
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$result = db_delete('alias', 'address', $this->username);
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if( $result == 1 ) {
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list(/*NULL*/,$domain) = explode('@', $this->username);
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db_log ('CLI', $domain, 'delete_alias', $this->username); # TODO: replace hardcoded CLI
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return true;
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}
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}
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/**
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* @return return value of previously called method
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*/
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public function result() {
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return $this->return;
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}
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}
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/* vim: set expandtab softtabstop=4 tabstop=4 shiftwidth=4: */
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