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<?php
/**
* functions/addressbook.php - Functions and classes for the addressbook system
*
* Functions require SM_PATH and support of forms.php functions
*
* @copyright 1999-2010 The SquirrelMail Project Team
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
* @version $Id: addressbook.php 13893 2010-01-25 02:47:41Z pdontthink $
* @package squirrelmail
* @subpackage addressbook
*/
/**
* If SM_PATH isn't defined, define it. Required to include files.
* @ignore
*/
if (!defined('SM_PATH')) {
define('SM_PATH','../');
}
/* make sure that display_messages.php is loaded */
include_once(SM_PATH . 'functions/display_messages.php');
global $addrbook_dsn, $addrbook_global_dsn;
/**
Create and initialize an addressbook object.
Returns the created object
*/
function addressbook_init($showerr = true, $onlylocal = false) {
global $data_dir, $username, $color, $ldap_server, $address_book_global_filename;
global $addrbook_dsn, $addrbook_table;
// Shared file based address book globals
global $abook_global_file, $abook_global_file_writeable, $abook_global_file_listing;
// Shared DB based address book globals
global $addrbook_global_dsn, $addrbook_global_table, $addrbook_global_writeable, $addrbook_global_listing;
// Record size restriction in file based address books
global $abook_file_line_length;
/* Create a new addressbook object */
$abook = new AddressBook;
/* Create empty error message */
$abook_init_error='';
/*
Always add a local backend. We use *either* file-based *or* a
database addressbook. If $addrbook_dsn is set, the database
backend is used. If not, addressbooks are stores in files.
*/
if (isset($addrbook_dsn) && !empty($addrbook_dsn)) {
/* Database */
if (!isset($addrbook_table) || empty($addrbook_table)) {
$addrbook_table = 'address';
}
$r = $abook->add_backend('database', Array('dsn' => $addrbook_dsn,
'owner' => $username,
'table' => $addrbook_table));
if (!$r && $showerr) {
$abook_init_error.=_("Error initializing address book database.") .' '. $abook->error;
}
} else {
/* File */
$filename = getHashedFile($username, $data_dir, "$username.abook");
$r = $abook->add_backend('local_file', Array('filename' => $filename,
'umask' => 0077,
'line_length' => $abook_file_line_length,
'create' => true));
if(!$r && $showerr) {
$abook_init_error.=sprintf( _("Error opening file %s"), $filename );
}
}
/* This would be for the global addressbook */
if (isset($abook_global_file) && isset($abook_global_file_writeable)
&& trim($abook_global_file)!=''){
// Detect place of address book
if (! preg_match("/[\/\\\]/",$abook_global_file)) {
/* no path chars, address book stored in data directory
* make sure that there is a slash between data directory
* and address book file name
*/
$abook_global_filename=$data_dir
. ((substr($data_dir, -1) != '/') ? '/' : '')
. $abook_global_file;
} elseif (preg_match("/^\/|\w:/",$abook_global_file)) {
// full path is set in options (starts with slash or x:)
$abook_global_filename=$abook_global_file;
} else {
$abook_global_filename=SM_PATH . $abook_global_file;
}
$r = $abook->add_backend('local_file',array('filename'=>$abook_global_filename,
'name' => _("Global address book"),
'detect_writeable' => false,
'line_length' => $abook_file_line_length,
'writeable'=> $abook_global_file_writeable,
'listing' => $abook_global_file_listing));
if (!$r && $showerr) {
if ($abook_init_error!='') $abook_init_error.="\n";
$abook_init_error.=_("Error initializing global address book.") . "\n" . $abook->error;
}
}
/* Load global addressbook from SQL if configured */
if (isset($addrbook_global_dsn) && !empty($addrbook_global_dsn)) {
/* Database configured */
if (!isset($addrbook_global_table) || empty($addrbook_global_table)) {
$addrbook_global_table = 'global_abook';
}
$r = $abook->add_backend('database',
Array('dsn' => $addrbook_global_dsn,
'owner' => 'global',
'name' => _("Global address book"),
'writeable' => $addrbook_global_writeable,
'listing' => $addrbook_global_listing,
'table' => $addrbook_global_table));
if (!$r && $showerr) {
if ($abook_init_error!='') $abook_init_error.="\n";
$abook_init_error.=_("Error initializing global address book.") . "\n" . $abook->error;
}
}
/*
* hook allows to include different address book backends.
* plugins should extract $abook and $r from arguments
* and use same add_backend commands as above functions.
* @since 1.5.1 and 1.4.5
*/
$hookReturn = do_hook('abook_init', $abook, $r);
$abook = $hookReturn[1];
$r = $hookReturn[2];
if (! $onlylocal) {
/* Load configured LDAP servers (if PHP has LDAP support) */
if (isset($ldap_server) && is_array($ldap_server) && function_exists('ldap_connect')) {
reset($ldap_server);
while (list($undef,$param) = each($ldap_server)) {
if (is_array($param)) {
$r = $abook->add_backend('ldap_server', $param);
if (!$r && $showerr) {
if ($abook_init_error!='') $abook_init_error.="\n";
$abook_init_error.=sprintf(_("Error initializing LDAP server %s:") .
"\n", $param['host']);
$abook_init_error.= $abook->error;
}
}
}
}
} // end of remote abook backends init
/**
* display address book init errors.
*/
if ($abook_init_error!='' && $showerr) {
$abook_init_error = htmlspecialchars($abook_init_error);
error_box($abook_init_error,$color);
}
/* Return the initialized object */
return $abook;
}
/*
* Had to move this function outside of the Addressbook Class
* PHP 4.0.4 Seemed to be having problems with inline functions.
*/
function addressbook_cmp($a,$b) {
if($a['backend'] > $b['backend']) {
return 1;
} else if($a['backend'] < $b['backend']) {
return -1;
}
return (strtolower($a['name']) > strtolower($b['name'])) ? 1 : -1;
}
/**
* Sort array by the key "name"
*/
function alistcmp($a,$b) {
$abook_sort_order=get_abook_sort();
switch ($abook_sort_order) {
case 0:
case 1:
$abook_sort='nickname';
break;
case 4:
case 5:
$abook_sort='email';
break;
case 6:
case 7:
$abook_sort='label';
break;
case 2:
case 3:
case 8:
default:
$abook_sort='name';
}
if ($a['backend'] > $b['backend']) {
return 1;
} else {
if ($a['backend'] < $b['backend']) {
return -1;
}
}
if( (($abook_sort_order+2) % 2) == 1) {
return (strtolower($a[$abook_sort]) < strtolower($b[$abook_sort])) ? 1 : -1;
} else {
return (strtolower($a[$abook_sort]) > strtolower($b[$abook_sort])) ? 1 : -1;
}
}
/**
* Address book sorting options
*
* returns address book sorting order
* @return integer book sorting options order
*/
function get_abook_sort() {
global $data_dir, $username;
/* get sorting order */
if(sqgetGlobalVar('abook_sort_order', $temp, SQ_GET)) {
$abook_sort_order = (int) $temp;
if ($abook_sort_order < 0 or $abook_sort_order > 8)
$abook_sort_order=8;
setPref($data_dir, $username, 'abook_sort_order', $abook_sort_order);
} else {
/* get previous sorting options. default to unsorted */
$abook_sort_order = getPref($data_dir, $username, 'abook_sort_order', 8);
}
return $abook_sort_order;
}
/**
* This function shows the address book sort button.
*
* @param integer $abook_sort_order current sort value
* @param string $alt_tag alt tag value (string visible to text only browsers)
* @param integer $Down sort value when list is sorted ascending
* @param integer $Up sort value when list is sorted descending
* @return string html code with sorting images and urls
* @since 1.5.1 and 1.4.6
*/
function show_abook_sort_button($abook_sort_order, $alt_tag, $Down, $Up ) {
global $form_url;
/* Figure out which image we want to use. */
if ($abook_sort_order != $Up && $abook_sort_order != $Down) {
$img = 'sort_none.png';
$which = $Up;
} elseif ($abook_sort_order == $Up) {
$img = 'up_pointer.png';
$which = $Down;
} else {
$img = 'down_pointer.png';
$which = 8;
}
/* Now that we have everything figured out, show the actual button. */
return ' <a href="' . $form_url .'?abook_sort_order=' . $which
. '"><img src="../images/' . $img
. '" border="0" width="12" height="10" alt="' . $alt_tag . '" title="'
. _("Click here to change the sorting of the address list") .'" /></a>';
}
/**
* This is the main address book class that connect all the
* backends and provide services to the functions above.
* @package squirrelmail
*/
class AddressBook {
var $backends = array();
var $numbackends = 0;
var $error = '';
var $localbackend = 0;
var $localbackendname = '';
var $add_extra_field = false;
// Constructor function.
function AddressBook() {
$this->localbackendname = _("Personal address book");
}
/*
* Return an array of backends of a given type,
* or all backends if no type is specified.
*/
function get_backend_list($type = '') {
$ret = array();
for ($i = 1 ; $i <= $this->numbackends ; $i++) {
if (empty($type) || $type == $this->backends[$i]->btype) {
$ret[] = &$this->backends[$i];
}
}
return $ret;
}
/*
========================== Public ========================
Add a new backend. $backend is the name of a backend
(without the abook_ prefix), and $param is an optional
mixed variable that is passed to the backend constructor.
See each of the backend classes for valid parameters.
*/
function add_backend($backend, $param = '') {
$backend_name = 'abook_' . $backend;
eval('$newback = new ' . $backend_name . '($param);');
if(!empty($newback->error)) {
$this->error = $newback->error;
return false;
}
$this->numbackends++;
$newback->bnum = $this->numbackends;
$this->backends[$this->numbackends] = $newback;
/* Store ID of first local backend added */
if ($this->localbackend == 0 && $newback->btype == 'local') {
$this->localbackend = $this->numbackends;
$this->localbackendname = $newback->sname;
}
return $this->numbackends;
}
/*
* This function takes a $row array as returned by the addressbook
* search and returns an e-mail address with the full name or
* nickname optionally prepended.
*/
function full_address($row) {
global $data_dir, $username;
$addrsrch_fullname = getPref($data_dir, $username, 'addrsrch_fullname', 'fullname');
// allow multiple addresses in one row (poor person's grouping - bah)
// (separate with commas)
//
$return = '';
$addresses = explode(',', $row['email']);
foreach ($addresses as $address) {
if (!empty($return)) $return .= ', ';
if ($addrsrch_fullname == 'fullname')
$return .= '"' . $row['name'] . '" <' . trim($address) . '>';
else if ($addrsrch_fullname == 'nickname')
$return .= '"' . $row['nickname'] . '" <' . trim($address) . '>';
else // "noprefix"
$return .= trim($address);
}
return $return;
}
/*
Return a list of addresses matching expression in
all backends of a given type.
*/
function search($expression, $bnum = -1) {
$ret = array();
$this->error = '';
/* Search all backends */
if ($bnum == -1) {
$sel = $this->get_backend_list('');
$failed = 0;
for ($i = 0 ; $i < sizeof($sel) ; $i++) {
$backend = &$sel[$i];
$backend->error = '';
$res = $backend->search($expression);
if (is_array($res)) {
$ret = array_merge($ret, $res);
} else {
$this->error .= "\n" . $backend->error;
$failed++;
}
}
/* Only fail if all backends failed */
if( $failed >= sizeof( $sel ) ) {
$ret = FALSE;
}
} else {
/* Search only one backend */
$ret = $this->backends[$bnum]->search($expression);
if (!is_array($ret)) {
$this->error .= "\n" . $this->backends[$bnum]->error;
$ret = FALSE;
}
}
return( $ret );
}
/* Return a sorted search */
function s_search($expression, $bnum = -1) {
$ret = $this->search($expression, $bnum);
if ( is_array( $ret ) ) {
usort($ret, 'addressbook_cmp');
}
return $ret;
}
/*
* Lookup an address by the indicated field. Only
* possible in local backends.
*/
function lookup($value, $bnum = -1, $field = SM_ABOOK_FIELD_NICKNAME) {
$ret = array();
if ($bnum > -1) {
$res = $this->backends[$bnum]->lookup($value, $field);
if (is_array($res)) {
return $res;
} else {
$this->error = $this->backends[$bnum]->error;
return false;
}
}
$sel = $this->get_backend_list('local');
for ($i = 0 ; $i < sizeof($sel) ; $i++) {
$backend = &$sel[$i];
$backend->error = '';
$res = $backend->lookup($value, $field);
// return an address if one is found
// (empty array means lookup concluded
// but no result found - in this case,
// proceed to next backend)
//
if (is_array($res)) {
if (!empty($res)) return $res;
} else {
$this->error = $backend->error;
return false;
}
}
return $ret;
}
/* Return all addresses */
function list_addr($bnum = -1) {
$ret = array();
if ($bnum == -1) {
$sel = $this->get_backend_list('');
} else {
$sel = array(0 => &$this->backends[$bnum]);
}
for ($i = 0 ; $i < sizeof($sel) ; $i++) {
$backend = &$sel[$i];
$backend->error = '';
$res = $backend->list_addr();
if (is_array($res)) {
$ret = array_merge($ret, $res);
} else {
$this->error = $backend->error;
return false;
}
}
return $ret;
}
/*
* Create a new address from $userdata, in backend $bnum.
* Return the backend number that the/ address was added
* to, or false if it failed.
*/
function add($userdata, $bnum) {
/* Validate data */
if (!is_array($userdata)) {
$this->error = _("Invalid input data");
return false;
}
if (empty($userdata['firstname']) && empty($userdata['lastname'])) {
$this->error = _("Name is missing");
return false;
}
if (empty($userdata['email'])) {
$this->error = _("E-mail address is missing");
return false;
}
if (empty($userdata['nickname'])) {
$userdata['nickname'] = $userdata['email'];
}
if (preg_match('/[ :|#"!]/', $userdata['nickname'])) {
$this->error = _("Nickname contains illegal characters");
return false;
}
/* Check that specified backend accept new entries */
if (!$this->backends[$bnum]->writeable) {
$this->error = _("Address book is read-only");
return false;
}
/* Add address to backend */
$res = $this->backends[$bnum]->add($userdata);
if ($res) {
return $bnum;
} else {
$this->error = $this->backends[$bnum]->error;
return false;
}
return false; // Not reached
} /* end of add() */
/*
* Remove the user identified by $alias from backend $bnum
* If $alias is an array, all users in the array are removed.
*/
function remove($alias, $bnum) {
/* Check input */
if (empty($alias)) {
return true;
}
/* Convert string to single element array */
if (!is_array($alias)) {
$alias = array(0 => $alias);
}
/* Check that specified backend is writable */
if (!$this->backends[$bnum]->writeable) {
$this->error = _("Address book is read-only");
return false;
}
/* Remove user from backend */
$res = $this->backends[$bnum]->remove($alias);
if ($res) {
return $bnum;
} else {
$this->error = $this->backends[$bnum]->error;
return false;
}
return FALSE; /* Not reached */
} /* end of remove() */
/*
* Remove the user identified by $alias from backend $bnum
* If $alias is an array, all users in the array are removed.
*/
function modify($alias, $userdata, $bnum) {
/* Check input */
if (empty($alias) || !is_string($alias)) {
return true;
}
/* Validate data */
if(!is_array($userdata)) {
$this->error = _("Invalid input data");
return false;
}
if (empty($userdata['firstname']) && empty($userdata['lastname'])) {
$this->error = _("Name is missing");
return false;
}
if (empty($userdata['email'])) {
$this->error = _("E-mail address is missing");
return false;
}
if (preg_match('/[: |#"!]/', $userdata['nickname'])) {
$this->error = _("Nickname contains illegal characters");
return false;
}
if (empty($userdata['nickname'])) {
$userdata['nickname'] = $userdata['email'];
}
/* Check that specified backend is writable */
if (!$this->backends[$bnum]->writeable) {
$this->error = _("Address book is read-only");;
return false;
}
/* Modify user in backend */
$res = $this->backends[$bnum]->modify($alias, $userdata);
if ($res) {
return $bnum;
} else {
$this->error = $this->backends[$bnum]->error;
return false;
}
return FALSE; /* Not reached */
} /* end of modify() */
} /* End of class Addressbook */
/**
* Generic backend that all other backends extend
* @package squirrelmail
*/
class addressbook_backend {
/* Variables that all backends must provide. */
var $btype = 'dummy';
var $bname = 'dummy';
var $sname = 'Dummy backend';
/*
* Variables common for all backends, but that
* should not be changed by the backends.
*/
var $bnum = -1;
var $error = '';
var $writeable = false;
function set_error($string) {
$this->error = '[' . $this->sname . '] ' . $string;
return false;
}
/* ========================== Public ======================== */
function search($expression) {
$this->set_error('search not implemented');
return false;
}
function lookup($value, $field) {
$this->set_error('lookup not implemented');
return false;
}
function list_addr() {
$this->set_error('list_addr not implemented');
return false;
}
function add($userdata) {
$this->set_error('add not implemented');
return false;
}
function remove($alias) {
$this->set_error('delete not implemented');
return false;
}
function modify($alias, $newuserdata) {
$this->set_error('modify not implemented');
return false;
}
}
/*
PHP 5 requires that the class be made first, which seems rather
logical, and should have been the way it was generated the first time.
*/
require_once(SM_PATH . 'functions/abook_local_file.php');
require_once(SM_PATH . 'functions/abook_ldap_server.php');
/* Only load database backend if database is configured */
if((isset($addrbook_dsn) && !empty($addrbook_dsn)) ||
(isset($addrbook_global_dsn) && !empty($addrbook_global_dsn))) {
include_once(SM_PATH . 'functions/abook_database.php');
}
/*
* hook allows adding different address book classes.
* class must follow address book class coding standards.
*
* see addressbook_backend class and functions/abook_*.php files.
* @since 1.5.1 and 1.4.5
*/
do_hook('abook_add_class');
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