481 lines
No EOL
12 KiB
PHP
481 lines
No EOL
12 KiB
PHP
<?php
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/**
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** addressbook.php
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**
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** Functions and classes for the addressbook system.
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**
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** $Id$
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**/
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if (defined ('addressbook_php'))
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return;
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define ('addressbook_php', true);
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// This is the path to the global site-wide addressbook.
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// It looks and feels just like a user's .abook file
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// If this is in the data directory, use "$data_dir/global.abook"
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// If not, specify the path as though it was accessed from the
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// src/ directory ("../global.abook" -> in main directory)
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//
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// If you don't want a global site-wide addressbook, comment these
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// two lines out. (They are disabled by default.)
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//
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// The global addressbook is unmodifiable by anyone. You must actually
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// use a shell script or whatnot to modify the contents.
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//
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//global $data_dir;
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//$address_book_global_filename = "$data_dir/global.abook";
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// Include backends here.
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require_once('../functions/abook_local_file.php');
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require_once('../functions/abook_ldap_server.php');
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// Use this if you wanna have a global address book
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if (isset($address_book_global_filename))
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include_once('../functions/abook_global_file.php');
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// Only load database backend if database is configured
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global $addrbook_dsn;
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if(isset($addrbook_dsn))
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include_once('../functions/abook_database.php');
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// Create and initialize an addressbook object.
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// Returns the created object
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function addressbook_init($showerr = true, $onlylocal = false) {
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global $data_dir, $username, $ldap_server, $address_book_global_filename;
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global $addrbook_dsn;
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// Create a new addressbook object
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$abook = new AddressBook;
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// Always add a local backend. We use *either* file-based *or* a
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// database addressbook. If $addrbook_dsn is set, the database
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// backend is used. If not, addressbooks are stores in files.
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if(isset($addrbook_dsn) && !empty($addrbook_dsn)) {
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// Database
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$r = $abook->add_backend('database', Array('dsn' => $addrbook_dsn,
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'owner' => $username,
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'table' => 'address'));
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if(!$r && $showerr) {
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printf(_("Error initializing addressbook database."));
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exit;
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}
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} else {
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// File
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$filename = sprintf('%s%s.abook', $data_dir, $username);
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$r = $abook->add_backend('local_file', Array('filename' => $filename,
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'create' => true));
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if(!$r && $showerr) {
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printf(_("Error opening file %s"), $filename);
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exit;
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}
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}
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// This would be for the global addressbook
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if (isset($address_book_global_filename)) {
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$r = $abook->add_backend('global_file');
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if (!$r && $showerr) {
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printf(_("Error initializing global addressbook."));
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exit;
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}
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}
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if($onlylocal)
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return $abook;
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// Load configured LDAP servers (if PHP has LDAP support)
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if(isset($ldap_server) && is_array($ldap_server) &&
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function_exists('ldap_connect')) {
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reset($ldap_server);
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while(list($undef,$param) = each($ldap_server)) {
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if(is_array($param)) {
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$r = $abook->add_backend('ldap_server', $param);
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if(!$r && $showerr) {
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printf(' ' . _("Error initializing LDAP server %s:") .
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"<BR>\n", $param['host']);
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print(' ' . $abook->error);
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exit;
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}
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}
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}
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}
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// Return the initialized object
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return $abook;
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}
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// Had to move this function outside of the Addressbook Class
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// PHP 4.0.4 Seemed to be having problems with inline functions.
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function addressbook_cmp($a,$b) {
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if($a['backend'] > $b['backend'])
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return 1;
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else if($a['backend'] < $b['backend'])
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return -1;
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return (strtolower($a['name']) > strtolower($b['name'])) ? 1 : -1;
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}
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/**
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** This is the main address book class that connect all the
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** backends and provide services to the functions above.
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**
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**/
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class AddressBook {
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var $backends = array();
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var $numbackends = 0;
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var $error = '';
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var $localbackend = 0;
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var $localbackendname = '';
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// Constructor function.
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function AddressBook() {
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$localbackendname = _("Personal address book");
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}
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// Return an array of backends of a given type,
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// or all backends if no type is specified.
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function get_backend_list($type = '') {
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$ret = array();
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for($i = 1 ; $i <= $this->numbackends ; $i++) {
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if(empty($type) || $type == $this->backends[$i]->btype) {
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$ret[] = &$this->backends[$i];
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}
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}
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return $ret;
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}
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// ========================== Public ========================
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// Add a new backend. $backend is the name of a backend
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// (without the abook_ prefix), and $param is an optional
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// mixed variable that is passed to the backend constructor.
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// See each of the backend classes for valid parameters.
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function add_backend($backend, $param = '') {
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$backend_name = 'abook_' . $backend;
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eval('$newback = new ' . $backend_name . '($param);');
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if(!empty($newback->error)) {
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$this->error = $newback->error;
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return false;
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}
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$this->numbackends++;
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$newback->bnum = $this->numbackends;
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$this->backends[$this->numbackends] = $newback;
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// Store ID of first local backend added
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if($this->localbackend == 0 && $newback->btype == 'local') {
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$this->localbackend = $this->numbackends;
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$this->localbackendname = $newback->sname;
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}
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return $this->numbackends;
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}
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// Return a list of addresses matching expression in
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// all backends of a given type.
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function search($expression, $bnum = -1) {
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$ret = array();
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$this->error = '';
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// Search all backends
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if($bnum == -1) {
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$sel = $this->get_backend_list('');
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$failed = 0;
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for($i = 0 ; $i < sizeof($sel) ; $i++) {
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$backend = &$sel[$i];
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$backend->error = '';
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$res = $backend->search($expression);
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if(is_array($res)) {
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$ret = array_merge($ret, $res);
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} else {
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$this->error .= "<br>\n" . $backend->error;
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$failed++;
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}
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}
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// Only fail if all backends failed
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if($failed >= sizeof($sel))
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return false;
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}
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// Search only one backend
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else {
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$ret = $this->backends[$bnum]->search($expression);
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if(!is_array($ret)) {
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$this->error .= "<br>\n" . $this->backends[$bnum]->error;
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return false;
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}
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}
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return $ret;
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}
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// Return a sorted search
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function s_search($expression, $bnum = -1) {
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$ret = $this->search($expression, $bnum);
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if(!is_array($ret))
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return $ret;
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usort($ret, 'addressbook_cmp');
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return $ret;
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}
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// Lookup an address by alias. Only possible in
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// local backends.
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function lookup($alias, $bnum = -1) {
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$ret = array();
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if($bnum > -1) {
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$res = $this->backends[$bnum]->lookup($alias);
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if(is_array($res)) {
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return $res;
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} else {
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$this->error = $backend->error;
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return false;
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}
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}
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$sel = $this->get_backend_list('local');
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for($i = 0 ; $i < sizeof($sel) ; $i++) {
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$backend = &$sel[$i];
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$backend->error = '';
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$res = $backend->lookup($alias);
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if(is_array($res)) {
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if(!empty($res))
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return $res;
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} else {
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$this->error = $backend->error;
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return false;
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}
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}
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return $ret;
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}
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// Return all addresses
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function list_addr($bnum = -1) {
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$ret = array();
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if($bnum == -1)
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$sel = $this->get_backend_list('local');
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else
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$sel = array(0 => &$this->backends[$bnum]);
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for($i = 0 ; $i < sizeof($sel) ; $i++) {
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$backend = &$sel[$i];
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$backend->error = '';
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$res = $backend->list_addr();
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if(is_array($res)) {
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$ret = array_merge($ret, $res);
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} else {
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$this->error = $backend->error;
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return false;
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}
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}
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return $ret;
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}
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// Create a new address from $userdata, in backend $bnum.
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// Return the backend number that the/ address was added
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// to, or false if it failed.
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function add($userdata, $bnum) {
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// Validate data
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if(!is_array($userdata)) {
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$this->error = _("Invalid input data");
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return false;
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}
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if(empty($userdata['firstname']) &&
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empty($userdata['lastname'])) {
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$this->error = _("Name is missing");
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return false;
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}
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if(empty($userdata['email'])) {
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$this->error = _("E-mail address is missing");
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return false;
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}
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if(empty($userdata['nickname'])) {
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$userdata['nickname'] = $userdata['email'];
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}
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if(eregi('[ \\:\\|\\#\\"\\!]', $userdata['nickname'])) {
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$this->error = _("Nickname contain illegal characters");
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return false;
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}
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// Check that specified backend accept new entries
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if(!$this->backends[$bnum]->writeable) {
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$this->error = _("Addressbook is read-only");
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return false;
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}
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// Add address to backend
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$res = $this->backends[$bnum]->add($userdata);
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if($res) {
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return $bnum;
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} else {
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$this->error = $this->backends[$bnum]->error;
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return false;
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}
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return false; // Not reached
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} // end of add()
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// Remove the user identified by $alias from backend $bnum
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// If $alias is an array, all users in the array are removed.
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function remove($alias, $bnum) {
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// Check input
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if(empty($alias))
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return true;
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// Convert string to single element array
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if(!is_array($alias))
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$alias = array(0 => $alias);
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// Check that specified backend is writable
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if(!$this->backends[$bnum]->writeable) {
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$this->error = _("Addressbook is read-only");
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return false;
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}
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// Remove user from backend
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$res = $this->backends[$bnum]->remove($alias);
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if($res) {
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return $bnum;
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} else {
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$this->error = $this->backends[$bnum]->error;
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return false;
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}
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return false; // Not reached
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} // end of remove()
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// Remove the user identified by $alias from backend $bnum
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// If $alias is an array, all users in the array are removed.
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function modify($alias, $userdata, $bnum) {
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// Check input
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if(empty($alias) || !is_string($alias))
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return true;
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// Validate data
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if(!is_array($userdata)) {
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$this->error = _("Invalid input data");
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return false;
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}
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if(empty($userdata['firstname']) &&
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empty($userdata['lastname'])) {
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$this->error = _("Name is missing");
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return false;
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}
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if(empty($userdata['email'])) {
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$this->error = _("E-mail address is missing");
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return false;
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}
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if(eregi('[\\: \\|\\#"\\!]', $userdata['nickname'])) {
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$this->error = _("Nickname contain illegal characters");
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return false;
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}
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if(empty($userdata['nickname'])) {
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$userdata['nickname'] = $userdata['email'];
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}
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// Check that specified backend is writable
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if(!$this->backends[$bnum]->writeable) {
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$this->error = _("Addressbook is read-only");;
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return false;
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}
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// Modify user in backend
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$res = $this->backends[$bnum]->modify($alias, $userdata);
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if($res) {
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return $bnum;
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} else {
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$this->error = $this->backends[$bnum]->error;
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return false;
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}
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return false; // Not reached
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} // end of modify()
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} // End of class Addressbook
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/**
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** Generic backend that all other backends extend
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**/
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class addressbook_backend {
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// Variables that all backends must provide.
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var $btype = 'dummy';
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var $bname = 'dummy';
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var $sname = 'Dummy backend';
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// Variables common for all backends, but that
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// should not be changed by the backends.
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var $bnum = -1;
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var $error = '';
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var $writeable = false;
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function set_error($string) {
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$this->error = '[' . $this->sname . '] ' . $string;
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return false;
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}
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// ========================== Public ========================
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function search($expression) {
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$this->set_error('search not implemented');
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return false;
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}
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function lookup($alias) {
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$this->set_error('lookup not implemented');
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return false;
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}
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function list_addr() {
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$this->set_error('list_addr not implemented');
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return false;
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}
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function add($userdata) {
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$this->set_error('add not implemented');
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return false;
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}
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function remove($alias) {
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$this->set_error('delete not implemented');
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return false;
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}
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function modify($alias, $newuserdata) {
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$this->set_error('modify not implemented');
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return false;
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}
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}
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?>
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