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472 lines
14 KiB
PHP
472 lines
14 KiB
PHP
<?php
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/*
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+-----------------------------------------------------------------------+
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| program/include/rcube_vcard.php |
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| This file is part of the RoundCube Webmail client |
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| Copyright (C) 2008-2009, RoundCube Dev. - Switzerland |
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| Licensed under the GNU GPL |
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| PURPOSE: |
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| Logical representation of a vcard address record |
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+-----------------------------------------------------------------------+
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| Author: Thomas Bruederli <roundcube@gmail.com> |
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+-----------------------------------------------------------------------+
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$Id$
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*/
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/**
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* Logical representation of a vcard-based address record
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* Provides functions to parse and export vCard data format
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*
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* @package Addressbook
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* @author Thomas Bruederli <roundcube@gmail.com>
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*/
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class rcube_vcard
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{
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private $raw = array(
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'FN' => array(),
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'N' => array(array('','','','','')),
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);
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public $business = false;
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public $displayname;
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public $surname;
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public $firstname;
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public $middlename;
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public $nickname;
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public $organization;
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public $notes;
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public $email = array();
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/**
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* Constructor
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*/
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public function __construct($vcard = null, $charset = RCMAIL_CHARSET)
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{
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if (!empty($vcard))
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$this->load($vcard, $charset);
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}
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/**
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* Load record from (internal, unfolded) vcard 3.0 format
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*
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* @param string vCard string to parse
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*/
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public function load($vcard, $charset = RCMAIL_CHARSET)
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{
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$this->raw = self::vcard_decode($vcard);
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// resolve charset parameters
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if ($charset == null)
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$this->raw = $this->charset_convert($this->raw);
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// find well-known address fields
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$this->displayname = $this->raw['FN'][0][0];
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$this->surname = $this->raw['N'][0][0];
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$this->firstname = $this->raw['N'][0][1];
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$this->middlename = $this->raw['N'][0][2];
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$this->nickname = $this->raw['NICKNAME'][0][0];
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$this->organization = $this->raw['ORG'][0][0];
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$this->business = ($this->raw['X-ABSHOWAS'][0][0] == 'COMPANY') || (join('', (array)$this->raw['N'][0]) == '' && !empty($this->organization));
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foreach ((array)$this->raw['EMAIL'] as $i => $raw_email)
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$this->email[$i] = is_array($raw_email) ? $raw_email[0] : $raw_email;
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// make the pref e-mail address the first entry in $this->email
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$pref_index = $this->get_type_index('EMAIL', 'pref');
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if ($pref_index > 0) {
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$tmp = $this->email[0];
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$this->email[0] = $this->email[$pref_index];
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$this->email[$pref_index] = $tmp;
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}
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}
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/**
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* Convert the data structure into a vcard 3.0 string
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*/
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public function export()
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{
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return self::rfc2425_fold(self::vcard_encode($this->raw));
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}
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/**
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* Setter for address record fields
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*
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* @param string Field name
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* @param string Field value
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* @param string Section name
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*/
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public function set($field, $value, $section = 'HOME')
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{
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switch ($field) {
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case 'name':
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case 'displayname':
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$this->raw['FN'][0][0] = $value;
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break;
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case 'firstname':
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$this->raw['N'][0][1] = $value;
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break;
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case 'surname':
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$this->raw['N'][0][0] = $value;
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break;
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case 'nickname':
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$this->raw['NICKNAME'][0][0] = $value;
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break;
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case 'organization':
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$this->raw['ORG'][0][0] = $value;
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break;
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case 'email':
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$index = $this->get_type_index('EMAIL', $section);
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if (!is_array($this->raw['EMAIL'][$index])) {
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$this->raw['EMAIL'][$index] = array(0 => $value, 'type' => array('INTERNET', $section, 'pref'));
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}
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else {
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$this->raw['EMAIL'][$index][0] = $value;
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}
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break;
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}
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}
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/**
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* Find index with the '$type' attribute
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*
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* @param string Field name
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* @return int Field index having $type set
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*/
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private function get_type_index($field, $type = 'pref')
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{
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$result = 0;
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if ($this->raw[$field]) {
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foreach ($this->raw[$field] as $i => $data) {
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if (is_array($data['type']) && in_array_nocase('pref', $data['type']))
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$result = $i;
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}
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}
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return $result;
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}
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/**
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* Convert a whole vcard (array) to UTF-8.
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* Each member value that has a charset parameter will be converted.
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*/
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private function charset_convert($card)
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{
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foreach ($card as $key => $node) {
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foreach ($node as $i => $subnode) {
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if (is_array($subnode) && $subnode['charset'] && ($charset = $subnode['charset'][0])) {
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foreach ($subnode as $j => $value) {
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if (is_numeric($j) && is_string($value))
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$card[$key][$i][$j] = rcube_charset_convert($value, $charset);
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}
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unset($card[$key][$i]['charset']);
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}
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}
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}
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return $card;
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}
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/**
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* Factory method to import a vcard file
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*
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* @param string vCard file content
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* @return array List of rcube_vcard objects
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*/
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public static function import($data)
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{
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$out = array();
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// check if charsets are specified (usually vcard version < 3.0 but this is not reliable)
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if (preg_match('/charset=/i', substr($data, 0, 2048)))
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$charset = null;
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// detect charset and convert to utf-8
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else if (($charset = self::detect_encoding($data)) && $charset != RCMAIL_CHARSET) {
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$data = rcube_charset_convert($data, $charset);
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$data = preg_replace(array('/^[\xFE\xFF]{2}/', '/^\xEF\xBB\xBF/', '/^\x00+/'), '', $data); // also remove BOM
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$charset = RCMAIL_CHARSET;
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}
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$vcard_block = '';
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$in_vcard_block = false;
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foreach (preg_split("/[\r\n]+/", $data) as $i => $line) {
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if ($in_vcard_block && !empty($line))
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$vcard_block .= $line . "\n";
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if (trim($line) == 'END:VCARD') {
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// parse vcard
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$obj = new rcube_vcard(self::cleanup($vcard_block), $charset);
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if (!empty($obj->displayname))
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$out[] = $obj;
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$in_vcard_block = false;
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}
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else if (trim($line) == 'BEGIN:VCARD') {
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$vcard_block = $line . "\n";
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$in_vcard_block = true;
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}
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}
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return $out;
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}
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/**
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* Normalize vcard data for better parsing
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*
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* @param string vCard block
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* @return string Cleaned vcard block
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*/
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private static function cleanup($vcard)
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{
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// Convert special types (like Skype) to normal type='skype' classes with this simple regex ;)
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$vcard = preg_replace(
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'/item(\d+)\.(TEL|URL)([^:]*?):(.*?)item\1.X-ABLabel:(?:_\$!<)?([\w-() ]*)(?:>!\$_)?./s',
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'\2;type=\5\3:\4',
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$vcard);
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// Remove cruft like item1.X-AB*, item1.ADR instead of ADR, and empty lines
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$vcard = preg_replace(array('/^item\d*\.X-AB.*$/m', '/^item\d*\./m', "/\n+/"), array('', '', "\n"), $vcard);
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// if N doesn't have any semicolons, add some
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$vcard = preg_replace('/^(N:[^;\R]*)$/m', '\1;;;;', $vcard);
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return $vcard;
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}
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private static function rfc2425_fold_callback($matches)
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{
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return ":\n ".rtrim(chunk_split($matches[1], 72, "\n "));
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}
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private static function rfc2425_fold($val)
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{
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return preg_replace_callback('/:([^\n]{72,})/', array('self', 'rfc2425_fold_callback'), $val) . "\n";
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}
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/**
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* Decodes a vcard block (vcard 3.0 format, unfolded)
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* into an array structure
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*
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* @param string vCard block to parse
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* @return array Raw data structure
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*/
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private static function vcard_decode($vcard)
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{
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// Perform RFC2425 line unfolding
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$vcard = preg_replace(array("/\r/", "/\n\s+/"), '', $vcard);
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$lines = preg_split('/\r?\n/', $vcard);
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$data = array();
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for ($i=0; $i < count($lines); $i++) {
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if (!preg_match('/^([^\\:]*):(.+)$/', $lines[$i], $line))
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continue;
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// convert 2.1-style "EMAIL;internet;home:" to 3.0-style "EMAIL;TYPE=internet;TYPE=home:"
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if (($data['VERSION'][0] == "2.1") && preg_match('/^([^;]+);([^:]+)/', $line[1], $regs2) && !preg_match('/^TYPE=/i', $regs2[2])) {
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$line[1] = $regs2[1];
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foreach (explode(';', $regs2[2]) as $prop)
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$line[1] .= ';' . (strpos($prop, '=') ? $prop : 'TYPE='.$prop);
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}
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if (!preg_match('/^(BEGIN|END)$/i', $line[1]) && preg_match_all('/([^\\;]+);?/', $line[1], $regs2)) {
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$entry = array();
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$field = strtoupper($regs2[1][0]);
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foreach($regs2[1] as $attrid => $attr) {
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if ((list($key, $value) = explode('=', $attr)) && $value) {
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$value = trim($value);
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if ($key == 'ENCODING') {
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// add next line(s) to value string if QP line end detected
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while ($value == 'QUOTED-PRINTABLE' && preg_match('/=$/', $lines[$i]))
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$line[2] .= "\n" . $lines[++$i];
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$line[2] = self::decode_value($line[2], $value);
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}
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else
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$entry[strtolower($key)] = array_merge((array)$entry[strtolower($key)], (array)self::vcard_unquote($value, ','));
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}
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else if ($attrid > 0) {
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$entry[$key] = true; // true means attr without =value
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}
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}
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$entry = array_merge($entry, (array)self::vcard_unquote($line[2]));
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$data[$field][] = $entry;
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}
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}
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unset($data['VERSION']);
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return $data;
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}
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/**
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* Split quoted string
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*
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* @param string vCard string to split
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* @param string Separator char/string
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* @return array List with splitted values
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*/
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private static function vcard_unquote($s, $sep = ';')
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{
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// break string into parts separated by $sep, but leave escaped $sep alone
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if (count($parts = explode($sep, strtr($s, array("\\$sep" => "\007")))) > 1) {
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foreach($parts as $s) {
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$result[] = self::vcard_unquote(strtr($s, array("\007" => "\\$sep")), $sep);
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}
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return $result;
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}
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else {
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return strtr($s, array("\r" => '', '\\\\' => '\\', '\n' => "\n", '\,' => ',', '\;' => ';', '\:' => ':'));
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}
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}
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/**
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* Decode a given string with the encoding rule from ENCODING attributes
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*
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* @param string String to decode
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* @param string Encoding type (quoted-printable and base64 supported)
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* @return string Decoded 8bit value
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*/
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private static function decode_value($value, $encoding)
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{
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switch (strtolower($encoding)) {
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case 'quoted-printable':
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return quoted_printable_decode($value);
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case 'base64':
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return base64_decode($value);
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default:
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return $value;
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}
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}
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/**
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* Encodes an entry for storage in our database (vcard 3.0 format, unfolded)
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*
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* @param array Raw data structure to encode
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* @return string vCard encoded string
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*/
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static function vcard_encode($data)
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{
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foreach((array)$data as $type => $entries) {
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/* valid N has 5 properties */
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while ($type == "N" && is_array($entries[0]) && count($entries[0]) < 5)
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$entries[0][] = "";
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foreach((array)$entries as $entry) {
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$attr = '';
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if (is_array($entry)) {
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$value = array();
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foreach($entry as $attrname => $attrvalues) {
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if (is_int($attrname))
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$value[] = $attrvalues;
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elseif ($attrvalues === true)
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$attr .= ";$attrname"; // true means just tag, not tag=value, as in PHOTO;BASE64:...
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else {
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foreach((array)$attrvalues as $attrvalue)
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$attr .= ";$attrname=" . self::vcard_quote($attrvalue, ',');
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}
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}
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}
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else {
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$value = $entry;
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}
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$vcard .= self::vcard_quote($type) . $attr . ':' . self::vcard_quote($value) . "\n";
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}
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}
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return "BEGIN:VCARD\nVERSION:3.0\n{$vcard}END:VCARD";
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}
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/**
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* Join indexed data array to a vcard quoted string
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*
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* @param array Field data
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* @param string Separator
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* @return string Joined and quoted string
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*/
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private static function vcard_quote($s, $sep = ';')
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{
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if (is_array($s)) {
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foreach($s as $part) {
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$r[] = self::vcard_quote($part, $sep);
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}
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return(implode($sep, (array)$r));
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}
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else {
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return strtr($s, array('\\' => '\\\\', "\r" => '', "\n" => '\n', ';' => '\;', ':' => '\:'));
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}
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}
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/**
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* Returns UNICODE type based on BOM (Byte Order Mark)
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*
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* @param string Input string to test
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* @return string Detected encoding
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*/
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private static function detect_encoding($string)
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{
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if (substr($string, 0, 4) == "\0\0\xFE\xFF") return 'UTF-32BE'; // Big Endian
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if (substr($string, 0, 4) == "\xFF\xFE\0\0") return 'UTF-32LE'; // Little Endian
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if (substr($string, 0, 2) == "\xFE\xFF") return 'UTF-16BE'; // Big Endian
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if (substr($string, 0, 2) == "\xFF\xFE") return 'UTF-16LE'; // Little Endian
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if (substr($string, 0, 3) == "\xEF\xBB\xBF") return 'UTF-8';
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// use mb_detect_encoding()
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$encodings = array('UTF-8', 'ISO-8859-1', 'ISO-8859-2', 'ISO-8859-3',
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'ISO-8859-4', 'ISO-8859-5', 'ISO-8859-6', 'ISO-8859-7', 'ISO-8859-8', 'ISO-8859-9',
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'ISO-8859-10', 'ISO-8859-13', 'ISO-8859-14', 'ISO-8859-15', 'ISO-8859-16',
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'WINDOWS-1252', 'WINDOWS-1251', 'BIG5', 'GB2312');
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if (function_exists('mb_detect_encoding') && ($enc = mb_detect_encoding($string, $encodings)))
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return $enc;
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// No match, check for UTF-8
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// from http://w3.org/International/questions/qa-forms-utf-8.html
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if (preg_match('/\A(
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[\x09\x0A\x0D\x20-\x7E]
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| [\xC2-\xDF][\x80-\xBF]
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| \xE0[\xA0-\xBF][\x80-\xBF]
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| [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2}
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| \xED[\x80-\x9F][\x80-\xBF]
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| \xF0[\x90-\xBF][\x80-\xBF]{2}
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| [\xF1-\xF3][\x80-\xBF]{3}
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| \xF4[\x80-\x8F][\x80-\xBF]{2}
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)*\z/xs', substr($string, 0, 2048)))
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return 'UTF-8';
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return rcmail::get_instance()->config->get('default_charset', 'ISO-8859-1'); # fallback to Latin-1
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}
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}
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