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rcube_vcard.php
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<?php
/**
+-----------------------------------------------------------------------+
| This file is part of the Roundcube Webmail client |
| Copyright (C) 2008-2012, The Roundcube Dev Team |
| |
| Licensed under the GNU General Public License version 3 or |
| any later version with exceptions for skins & plugins. |
| See the README file for a full license statement. |
| |
| PURPOSE: |
| Logical representation of a vcard address record |
+-----------------------------------------------------------------------+
| Author: Thomas Bruederli <roundcube@gmail.com> |
| Author: Aleksander Machniak <alec@alec.pl> |
+-----------------------------------------------------------------------+
*/
/**
* Logical representation of a vcard-based address record
* Provides functions to parse and export vCard data format
*
* @package Framework
* @subpackage Addressbook
*/
class rcube_vcard
{
private static $values_decoded = false;
private $raw = array(
'FN' => array(),
'N' => array(array('','','','','')),
);
private static $fieldmap = array(
'phone' => 'TEL',
'birthday' => 'BDAY',
'website' => 'URL',
'notes' => 'NOTE',
'email' => 'EMAIL',
'address' => 'ADR',
'jobtitle' => 'TITLE',
'department' => 'X-DEPARTMENT',
'gender' => 'X-GENDER',
'maidenname' => 'X-MAIDENNAME',
'anniversary' => 'X-ANNIVERSARY',
'assistant' => 'X-ASSISTANT',
'manager' => 'X-MANAGER',
'spouse' => 'X-SPOUSE',
'edit' => 'X-AB-EDIT',
'groups' => 'CATEGORIES',
);
private $typemap = array(
'IPHONE' => 'mobile',
'CELL' => 'mobile',
'WORK,FAX' => 'workfax',
);
private $phonetypemap = array(
'HOME1' => 'HOME',
'BUSINESS1' => 'WORK',
'BUSINESS2' => 'WORK2',
'BUSINESSFAX' => 'WORK,FAX',
'MOBILE' => 'CELL',
);
private $addresstypemap = array(
'BUSINESS' => 'WORK',
);
private $immap = array(
'X-JABBER' => 'jabber',
'X-ICQ' => 'icq',
'X-MSN' => 'msn',
'X-AIM' => 'aim',
'X-YAHOO' => 'yahoo',
'X-SKYPE' => 'skype',
'X-SKYPE-USERNAME' => 'skype',
);
public $business = false;
public $displayname;
public $surname;
public $firstname;
public $middlename;
public $nickname;
public $organization;
public $email = array();
public static $eol = "\r\n";
/**
* Constructor
*/
public function __construct($vcard = null, $charset = RCUBE_CHARSET, $detect = false, $fieldmap = array())
{
if (!empty($fieldmap)) {
$this->extend_fieldmap($fieldmap);
}
if (!empty($vcard)) {
$this->load($vcard, $charset, $detect);
}
}
/**
* Load record from (internal, unfolded) vcard 3.0 format
*
* @param string vCard string to parse
* @param string Charset of string values
* @param boolean True if loading a 'foreign' vcard and extra heuristics for charset detection is required
*/
public function load($vcard, $charset = RCUBE_CHARSET, $detect = false)
{
self::$values_decoded = false;
$this->raw = self::vcard_decode(self::cleanup($vcard));
// resolve charset parameters
if ($charset == null) {
$this->raw = self::charset_convert($this->raw);
}
// vcard has encoded values and charset should be detected
else if ($detect && self::$values_decoded
&& ($detected_charset = self::detect_encoding(self::vcard_encode($this->raw)))
&& $detected_charset != RCUBE_CHARSET
) {
$this->raw = self::charset_convert($this->raw, $detected_charset);
}
// find well-known address fields
$this->displayname = $this->raw['FN'][0][0];
$this->surname = $this->raw['N'][0][0];
$this->firstname = $this->raw['N'][0][1];
$this->middlename = $this->raw['N'][0][2];
$this->nickname = $this->raw['NICKNAME'][0][0];
$this->organization = $this->raw['ORG'][0][0];
$this->business = ($this->raw['X-ABSHOWAS'][0][0] == 'COMPANY') || (join('', (array)$this->raw['N'][0]) == '' && !empty($this->organization));
foreach ((array)$this->raw['EMAIL'] as $i => $raw_email) {
$this->email[$i] = is_array($raw_email) ? $raw_email[0] : $raw_email;
}
// make the pref e-mail address the first entry in $this->email
$pref_index = $this->get_type_index('EMAIL', 'pref');
if ($pref_index > 0) {
$tmp = $this->email[0];
$this->email[0] = $this->email[$pref_index];
$this->email[$pref_index] = $tmp;
}
// fix broken vcards from Outlook that only supply ORG but not the required N or FN properties
if (!strlen(trim($this->displayname . $this->surname . $this->firstname)) && strlen($this->organization)) {
$this->displayname = $this->organization;
}
}
/**
* Return vCard data as associative array to be unsed in Roundcube address books
*
* @return array Hash array with key-value pairs
*/
public function get_assoc()
{
$out = array('name' => $this->displayname);
$typemap = $this->typemap;
// copy name fields to output array
foreach (array('firstname','surname','middlename','nickname','organization') as $col) {
if (strlen($this->$col)) {
$out[$col] = $this->$col;
}
}
if ($this->raw['N'][0][3])
$out['prefix'] = $this->raw['N'][0][3];
if ($this->raw['N'][0][4])
$out['suffix'] = $this->raw['N'][0][4];
// convert from raw vcard data into associative data for Roundcube
foreach (array_flip(self::$fieldmap) as $tag => $col) {
foreach ((array)$this->raw[$tag] as $i => $raw) {
if (is_array($raw)) {
$k = -1;
$key = $col;
$subtype = '';
if (!empty($raw['type'])) {
$combined = join(',', self::array_filter((array)$raw['type'], 'internet,pref', true));
$combined = strtoupper($combined);
if ($typemap[$combined]) {
$subtype = $typemap[$combined];
}
else if ($typemap[$raw['type'][++$k]]) {
$subtype = $typemap[$raw['type'][$k]];
}
else {
$subtype = strtolower($raw['type'][$k]);
}
while ($k < count($raw['type']) && ($subtype == 'internet' || $subtype == 'pref')) {
$subtype = $typemap[$raw['type'][++$k]] ?: strtolower($raw['type'][$k]);
}
}
// read vcard 2.1 subtype
if (!$subtype) {
foreach ($raw as $k => $v) {
if (!is_numeric($k) && $v === true && ($k = strtolower($k))
&& !in_array($k, array('pref','internet','voice','base64'))
) {
$k_uc = strtoupper($k);
$subtype = $typemap[$k_uc] ?: $k;
break;
}
}
}
// force subtype if none set
if (!$subtype && preg_match('/^(email|phone|address|website)/', $key)) {
$subtype = 'other';
}
if ($subtype) {
$key .= ':' . $subtype;
}
// split ADR values into assoc array
if ($tag == 'ADR') {
list(,, $value['street'], $value['locality'], $value['region'], $value['zipcode'], $value['country']) = $raw;
$out[$key][] = $value;
}
else {
$out[$key][] = $raw[0];
}
}
else {
$out[$col][] = $raw;
}
}
}
// handle special IM fields as used by Apple
foreach ($this->immap as $tag => $type) {
foreach ((array)$this->raw[$tag] as $i => $raw) {
$out['im:'.$type][] = $raw[0];
}
}
// copy photo data
if ($this->raw['PHOTO']) {
$out['photo'] = $this->raw['PHOTO'][0][0];
}
return $out;
}
/**
* Convert the data structure into a vcard 3.0 string
*/
public function export($folded = true)
{
$vcard = self::vcard_encode($this->raw);
return $folded ? self::rfc2425_fold($vcard) : $vcard;
}
/**
* Clear the given fields in the loaded vcard data
*
* @param array List of field names to be reset
*/
public function reset($fields = null)
{
if (!$fields) {
$fields = array_merge(array_values(self::$fieldmap), array_keys($this->immap),
array('FN','N','ORG','NICKNAME','EMAIL','ADR','BDAY'));
}
foreach ($fields as $f) {
unset($this->raw[$f]);
}
if (!$this->raw['N']) {
$this->raw['N'] = array(array('','','','',''));
}
if (!$this->raw['FN']) {
$this->raw['FN'] = array();
}
$this->email = array();
}
/**
* Setter for address record fields
*
* @param string Field name
* @param string Field value
* @param string Type/section name
*/
public function set($field, $value, $type = 'HOME')
{
$field = strtolower($field);
$type_uc = strtoupper($type);
switch ($field) {
case 'name':
case 'displayname':
$this->raw['FN'][0][0] = $this->displayname = $value;
break;
case 'surname':
$this->raw['N'][0][0] = $this->surname = $value;
break;
case 'firstname':
$this->raw['N'][0][1] = $this->firstname = $value;
break;
case 'middlename':
$this->raw['N'][0][2] = $this->middlename = $value;
break;
case 'prefix':
$this->raw['N'][0][3] = $value;
break;
case 'suffix':
$this->raw['N'][0][4] = $value;
break;
case 'nickname':
$this->raw['NICKNAME'][0][0] = $this->nickname = $value;
break;
case 'organization':
$this->raw['ORG'][0][0] = $this->organization = $value;
break;
case 'photo':
if (strpos($value, 'http:') === 0) {
// TODO: fetch file from URL and save it locally?
$this->raw['PHOTO'][0] = array(0 => $value, 'url' => true);
}
else {
$this->raw['PHOTO'][0] = array(0 => $value, 'base64' => (bool) preg_match('![^a-z0-9/=+-]!i', $value));
}
break;
case 'email':
$this->raw['EMAIL'][] = array(0 => $value, 'type' => array_filter(array('INTERNET', $type_uc)));
$this->email[] = $value;
break;
case 'im':
// save IM subtypes into extension fields
$typemap = array_flip($this->immap);
if ($field = $typemap[strtolower($type)]) {
$this->raw[$field][] = array(0 => $value);
}
break;
case 'birthday':
case 'anniversary':
if (($val = rcube_utils::anytodatetime($value)) && ($fn = self::$fieldmap[$field])) {
$this->raw[$fn][] = array(0 => $val->format('Y-m-d'), 'value' => array('date'));
}
break;
case 'address':
if ($this->addresstypemap[$type_uc]) {
$type = $this->addresstypemap[$type_uc];
}
$value = $value[0] ? $value : array('', '', $value['street'], $value['locality'], $value['region'], $value['zipcode'], $value['country']);
// fall through if not empty
if (!strlen(join('', $value))) {
break;
}
default:
if ($field == 'phone' && $this->phonetypemap[$type_uc]) {
$type = $this->phonetypemap[$type_uc];
}
if (($tag = self::$fieldmap[$field]) && (is_array($value) || strlen($value))) {
$this->raw[$tag][] = (array) $value;
if ($type) {
$index = count($this->raw[$tag]) - 1;
$typemap = array_flip($this->typemap);
$this->raw[$tag][$index]['type'] = explode(',', $typemap[$type_uc] ?: $type);
}
}
else {
unset($this->raw[$tag]);
}
break;
}
}
/**
* Setter for individual vcard properties
*
* @param string VCard tag name
* @param array Value-set of this vcard property
* @param boolean Set to true if the value-set should be appended instead of replacing any existing value-set
*/
public function set_raw($tag, $value, $append = false)
{
$index = $append && isset($this->raw[$tag]) ? count($this->raw[$tag]) : 0;
$this->raw[$tag][$index] = (array)$value;
}
/**
* Find index with the '$type' attribute
*
* @param string Field name
*
* @return int Field index having $type set
*/
private function get_type_index($field)
{
$result = 0;
if ($this->raw[$field]) {
foreach ($this->raw[$field] as $i => $data) {
if (is_array($data['type']) && in_array_nocase('pref', $data['type'])) {
$result = $i;
}
}
}
return $result;
}
/**
* Convert a whole vcard (array) to UTF-8.
* If $force_charset is null, each member value that has a charset parameter will be converted
*/
private static function charset_convert($card, $force_charset = null)
{
foreach ($card as $key => $node) {
foreach ($node as $i => $subnode) {
if (is_array($subnode) && (($charset = $force_charset) || ($subnode['charset'] && ($charset = $subnode['charset'][0])))) {
foreach ($subnode as $j => $value) {
if (is_numeric($j) && is_string($value)) {
$card[$key][$i][$j] = rcube_charset::convert($value, $charset);
}
}
unset($card[$key][$i]['charset']);
}
}
}
return $card;
}
/**
* Extends fieldmap definition
*/
public function extend_fieldmap($map)
{
if (is_array($map)) {
self::$fieldmap = array_merge($map, self::$fieldmap);
}
}
/**
* Factory method to import a vcard file
*
* @param string vCard file content
*
* @return array List of rcube_vcard objects
*/
public static function import($data)
{
$out = array();
// check if charsets are specified (usually vcard version < 3.0 but this is not reliable)
if (preg_match('/charset=/i', substr($data, 0, 2048))) {
$charset = null;
}
// detect charset and convert to utf-8
else if (($charset = self::detect_encoding($data)) && $charset != RCUBE_CHARSET) {
$data = rcube_charset::convert($data, $charset);
$data = preg_replace(array('/^[\xFE\xFF]{2}/', '/^\xEF\xBB\xBF/', '/^\x00+/'), '', $data); // also remove BOM
$charset = RCUBE_CHARSET;
}
$vcard_block = '';
$in_vcard_block = false;
foreach (preg_split("/[\r\n]+/", $data) as $line) {
if ($in_vcard_block && !empty($line)) {
$vcard_block .= $line . "\n";
}
$line = trim($line);
if (preg_match('/^END:VCARD$/i', $line)) {
// parse vcard
$obj = new rcube_vcard($vcard_block, $charset, true, self::$fieldmap);
// FN and N is required by vCard format (RFC 2426)
// on import we can be less restrictive, let's addressbook decide
if (!empty($obj->displayname) || !empty($obj->surname) || !empty($obj->firstname) || !empty($obj->email)) {
$out[] = $obj;
}
$in_vcard_block = false;
}
else if (preg_match('/^BEGIN:VCARD$/i', $line)) {
$vcard_block = $line . "\n";
$in_vcard_block = true;
}
}
return $out;
}
/**
* Normalize vcard data for better parsing
*
* @param string vCard block
*
* @return string Cleaned vcard block
*/
public static function cleanup($vcard)
{
// convert Apple X-ABRELATEDNAMES into X-* fields for better compatibility
$vcard = preg_replace_callback(
'/item(\d+)\.(X-ABRELATEDNAMES)([^:]*?):(.*?)item\1.X-ABLabel:(?:_\$!<)?([\w-() ]*)(?:>!\$_)?./s',
array('self', 'x_abrelatednames_callback'),
$vcard);
// Cleanup
$vcard = preg_replace(array(
// convert special types (like Skype) to normal type='skype' classes with this simple regex ;)
'/item(\d+)\.(TEL|EMAIL|URL)([^:]*?):(.*?)item\1.X-ABLabel:(?:_\$!<)?([\w-() ]*)(?:>!\$_)?./si',
'/^item\d*\.X-AB.*$/mi', // remove cruft like item1.X-AB*
'/^item\d*\./mi', // remove item1.ADR instead of ADR
'/\n+/', // remove empty lines
'/^(N:[^;\R]*)$/m', // if N doesn't have any semicolons, add some
),
array(
'\2;type=\5\3:\4',
'',
'',
"\n",
'\1;;;;',
), $vcard);
// convert X-WAB-GENDER to X-GENDER
if (preg_match('/X-WAB-GENDER:(\d)/', $vcard, $matches)) {
$value = $matches[1] == '2' ? 'male' : 'female';
$vcard = preg_replace('/X-WAB-GENDER:\d/', 'X-GENDER:' . $value, $vcard);
}
return $vcard;
}
private static function x_abrelatednames_callback($matches)
{
return 'X-' . strtoupper($matches[5]) . $matches[3] . ':'. $matches[4];
}
private static function rfc2425_fold_callback($matches)
{
// chunk_split string and avoid lines breaking multibyte characters
$c = 71;
$out .= substr($matches[1], 0, $c);
for ($n = $c; $c < strlen($matches[1]); $c++) {
// break if length > 75 or mutlibyte character starts after position 71
if ($n > 75 || ($n > 71 && ord($matches[1][$c]) >> 6 == 3)) {
$out .= "\r\n ";
$n = 0;
}
$out .= $matches[1][$c];
$n++;
}
return $out;
}
public static function rfc2425_fold($val)
{
return preg_replace_callback('/([^\n]{72,})/', array('self', 'rfc2425_fold_callback'), $val);
}
/**
* Decodes a vcard block (vcard 3.0 format, unfolded)
* into an array structure
*
* @param string vCard block to parse
*
* @return array Raw data structure
*/
private static function vcard_decode($vcard)
{
// Perform RFC2425 line unfolding and split lines
$vcard = preg_replace(array("/\r/", "/\n\s+/"), '', $vcard);
$lines = explode("\n", $vcard);
$result = array();
for ($i=0; $i < count($lines); $i++) {
if (!($pos = strpos($lines[$i], ':'))) {
continue;
}
$prefix = substr($lines[$i], 0, $pos);
$data = substr($lines[$i], $pos+1);
if (preg_match('/^(BEGIN|END)$/i', $prefix)) {
continue;
}
// convert 2.1-style "EMAIL;internet;home:" to 3.0-style "EMAIL;TYPE=internet;TYPE=home:"
if ($result['VERSION'][0] == "2.1"
&& preg_match('/^([^;]+);([^:]+)/', $prefix, $regs2)
&& !preg_match('/^TYPE=/i', $regs2[2])
) {
$prefix = $regs2[1];
foreach (explode(';', $regs2[2]) as $prop) {
$prefix .= ';' . (strpos($prop, '=') ? $prop : 'TYPE='.$prop);
}
}
if (preg_match_all('/([^\\;]+);?/', $prefix, $regs2)) {
$entry = array();
$field = strtoupper($regs2[1][0]);
$enc = null;
foreach ($regs2[1] as $attrid => $attr) {
$attr = preg_replace('/[\s\t\n\r\0\x0B]/', '', $attr);
if ((list($key, $value) = explode('=', $attr)) && $value) {
if ($key == 'ENCODING') {
$value = strtoupper($value);
// add next line(s) to value string if QP line end detected
if ($value == 'QUOTED-PRINTABLE') {
while (preg_match('/=$/', $lines[$i])) {
$data .= "\n" . $lines[++$i];
}
}
$enc = $value == 'BASE64' ? 'B' : $value;
}
else {
$lc_key = strtolower($key);
$entry[$lc_key] = array_merge((array)$entry[$lc_key], (array)self::vcard_unquote($value, ','));
}
}
else if ($attrid > 0) {
$entry[strtolower($key)] = true; // true means attr without =value
}
}
// decode value
if ($enc || !empty($entry['base64'])) {
// save encoding type (#1488432)
if ($enc == 'B') {
$entry['encoding'] = 'B';
// should we use vCard 3.0 instead?
// $entry['base64'] = true;
}
$data = self::decode_value($data, $enc ?: 'base64');
}
else if ($field == 'PHOTO') {
// vCard 4.0 data URI, "PHOTO:data:image/jpeg;base64,..."
if (preg_match('/^data:[a-z\/_-]+;base64,/i', $data, $m)) {
$entry['encoding'] = $enc = 'B';
$data = substr($data, strlen($m[0]));
$data = self::decode_value($data, 'base64');
}
}
if ($enc != 'B' && empty($entry['base64'])) {
$data = self::vcard_unquote($data);
}
$entry = array_merge($entry, (array) $data);
$result[$field][] = $entry;
}
}
unset($result['VERSION']);
return $result;
}
/**
* Decode a given string with the encoding rule from ENCODING attributes
*
* @param string String to decode
* @param string Encoding type (quoted-printable and base64 supported)
*
* @return string Decoded 8bit value
*/
private static function decode_value($value, $encoding)
{
switch (strtolower($encoding)) {
case 'quoted-printable':
self::$values_decoded = true;
return quoted_printable_decode($value);
case 'base64':
case 'b':
self::$values_decoded = true;
return base64_decode($value);
default:
return $value;
}
}
/**
* Encodes an entry for storage in our database (vcard 3.0 format, unfolded)
*
* @param array Raw data structure to encode
*
* @return string vCard encoded string
*/
static function vcard_encode($data)
{
foreach ((array)$data as $type => $entries) {
// valid N has 5 properties
while ($type == "N" && is_array($entries[0]) && count($entries[0]) < 5) {
$entries[0][] = "";
}
// make sure FN is not empty (required by RFC2426)
if ($type == "FN" && empty($entries)) {
$entries[0] = $data['EMAIL'][0][0];
}
foreach ((array)$entries as $entry) {
$attr = '';
if (is_array($entry)) {
$value = array();
foreach ($entry as $attrname => $attrvalues) {
if (is_int($attrname)) {
if (!empty($entry['base64']) || $entry['encoding'] == 'B') {
$attrvalues = base64_encode($attrvalues);
}
$value[] = $attrvalues;
}
else if (is_bool($attrvalues)) {
// true means just a tag, not tag=value, as in PHOTO;BASE64:...
if ($attrvalues) {
// vCard v3 uses ENCODING=b (#1489183)
if ($attrname == 'base64') {
$attr .= ";ENCODING=b";
}
else {
$attr .= strtoupper(";$attrname");
}
}
}
else {
foreach ((array)$attrvalues as $attrvalue) {
$attr .= strtoupper(";$attrname=") . self::vcard_quote($attrvalue, ',');
}
}
}
}
else {
$value = $entry;
}
// skip empty entries
if (self::is_empty($value)) {
continue;
}
$vcard .= self::vcard_quote($type) . $attr . ':' . self::vcard_quote($value) . self::$eol;
}
}
return 'BEGIN:VCARD' . self::$eol . 'VERSION:3.0' . self::$eol . $vcard . 'END:VCARD';
}
/**
* Join indexed data array to a vcard quoted string
*
* @param array Field data
* @param string Separator
*
* @return string Joined and quoted string
*/
public static function vcard_quote($s, $sep = ';')
{
if (is_array($s)) {
foreach ($s as $part) {
$r[] = self::vcard_quote($part, $sep);
}
return(implode($sep, (array)$r));
}
return strtr($s, array('\\' => '\\\\', "\r" => '', "\n" => '\n', $sep => '\\'.$sep));
}
/**
* Split quoted string
*
* @param string vCard string to split
* @param string Separator char/string
*
* @return array List with splited values
*/
private static function vcard_unquote($s, $sep = ';')
{
// break string into parts separated by $sep
if (!empty($sep)) {
// Handle properly backslash escaping (#1488896)
$rep1 = array("\\\\" => "\010", "\\$sep" => "\007");
$rep2 = array("\007" => "\\$sep", "\010" => "\\\\");
if (count($parts = explode($sep, strtr($s, $rep1))) > 1) {
foreach ($parts as $s) {
$result[] = self::vcard_unquote(strtr($s, $rep2));
}
return $result;
}
$s = trim(strtr($s, $rep2));
}
// some implementations (GMail) use non-standard backslash before colon (#1489085)
// we will handle properly any backslashed character - removing dummy backslahes
// return strtr($s, array("\r" => '', '\\\\' => '\\', '\n' => "\n", '\N' => "\n", '\,' => ',', '\;' => ';'));
$s = str_replace("\r", '', $s);
$pos = 0;
while (($pos = strpos($s, '\\', $pos)) !== false) {
$next = substr($s, $pos + 1, 1);
if ($next == 'n' || $next == 'N') {
$s = substr_replace($s, "\n", $pos, 2);
}
else {
$s = substr_replace($s, '', $pos, 1);
}
$pos += 1;
}
return $s;
}
/**
* Check if vCard entry is empty: empty string or an array with
* all entries empty.
*
* @param mixed $value Attribute value (string or array)
*
* @return bool True if the value is empty, False otherwise
*/
private static function is_empty($value)
{
foreach ((array)$value as $v) {
if (((string)$v) !== '') {
return false;
}
}
return true;
}
/**
* Extract array values by a filter
*
* @param array Array to filter
* @param keys Array or comma separated list of values to keep
* @param boolean Invert key selection: remove the listed values
*
* @return array The filtered array
*/
private static function array_filter($arr, $values, $inverse = false)
{
if (!is_array($values)) {
$values = explode(',', $values);
}
$result = array();
$keep = array_flip((array)$values);
foreach ($arr as $key => $val) {
if ($inverse != isset($keep[strtolower($val)])) {
$result[$key] = $val;
}
}
return $result;
}
/**
* Returns UNICODE type based on BOM (Byte Order Mark)
*
* @param string Input string to test
*
* @return string Detected encoding
*/
private static function detect_encoding($string)
{
$fallback = rcube::get_instance()->config->get('default_charset', 'ISO-8859-1'); // fallback to Latin-1
return rcube_charset::detect($string, $fallback);
}
}

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