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z-push_ynh/sources/include/z_carddav.php

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<?php
/**
* CardDAV PHP
*
* Simple CardDAV query
* --------------------
* $carddav = new carddav_backend('https://davical.example.com/user/contacts/');
* $carddav->set_auth('username', 'password');
* echo $carddav->get();
*
*
* Simple vCard query
* ------------------
* $carddav = new carddav_backend('https://davical.example.com/user/contacts/');
* $carddav->set_auth('username', 'password');
* echo $carddav->get_vcard('0126FFB4-2EB74D0A-302EA17F');
*
*
* XML vCard query
* ------------------
* $carddav = new carddav_backend('https://davical.example.com/user/contacts/');
* $carddav->set_auth('username', 'password');
* echo $carddav->get_xml_vcard('0126FFB4-2EB74D0A-302EA17F');
*
*
* Check CardDAV server connection
* -------------------------------
* $carddav = new carddav_backend('https://davical.example.com/user/contacts/');
* $carddav->set_auth('username', 'password');
* var_dump($carddav->check_connection());
*
*
* CardDAV delete query
* --------------------
* $carddav = new carddav_backend('https://davical.example.com/user/contacts/');
* $carddav->set_auth('username', 'password');
* $carddav->delete('0126FFB4-2EB74D0A-302EA17F');
*
*
* CardDAV add query
* --------------------
* $vcard = 'BEGIN:VCARD
* VERSION:3.0
* UID:1f5ea45f-b28a-4b96-25as-ed4f10edf57b
* FN:Christian Putzke
* N:Christian;Putzke;;;
* EMAIL;TYPE=OTHER:christian.putzke@graviox.de
* END:VCARD';
*
* $carddav = new carddav_backend('https://davical.example.com/user/contacts/');
* $carddav->set_auth('username', 'password');
* $vcard_id = $carddav->add($vcard);
*
*
* CardDAV update query
* --------------------
* $vcard = 'BEGIN:VCARD
* VERSION:3.0
* UID:1f5ea45f-b28a-4b96-25as-ed4f10edf57b
* FN:Christian Putzke
* N:Christian;Putzke;;;
* EMAIL;TYPE=OTHER:christian.putzke@graviox.de
* END:VCARD';
*
* $carddav = new carddav_backend('https://davical.example.com/user/contacts/');
* $carddav->set_auth('username', 'password');
* $carddav->update($vcard, '0126FFB4-2EB74D0A-302EA17F');
*
*
* CardDAV debug
* -------------
* $carddav = new carddav_backend('https://davical.example.com/user/contacts/');
* $carddav->enable_debug();
* $carddav->set_auth('username', 'password');
* $carddav->get();
* var_dump($carddav->get_debug());
*
*
* CardDAV server list
* -------------------
* DAViCal: https://example.com/{resource|principal|username}/{collection}/
* Apple Addressbook Server: https://example.com/addressbooks/users/{resource|principal|username}/{collection}/
* memotoo: https://sync.memotoo.com/cardDAV/
* SabreDAV: https://example.com/addressbooks/{resource|principal|username}/{collection}/
* ownCloud: https://example.com/apps/contacts/carddav.php/addressbooks/{resource|principal|username}/{collection}/
* SOGo: https://example.com/SOGo/dav/{resource|principal|username}/Contacts/{collection}/
*
*
* @author Christian Putzke <christian.putzke@graviox.de>
* @copyright Christian Putzke
* @link http://www.graviox.de/
* @link https://twitter.com/cputzke/
* @since 20.07.2011
* @version 0.6
* @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
*/
class carddav_backend
{
/**
* CardDAV PHP Version
*
* @constant string
*/
const VERSION = '0.6.c';
/**
* User agent displayed in http requests
*
* @constant string
*/
const USERAGENT = 'Z-Push CardDAV/';
/**
* CardDAV server url
*
* @var string
*/
private $url = null;
/**
* CardDAV server url_parts
*
* @var array
*/
private $url_parts = null;
/**
* Authentication string
*
* @var string
*/
private $auth = null;
/**
* Authentication: username
*
* @var string
*/
private $username = null;
/**
* Authentication: password
*
* @var string
*/
private $password = null;
/**
* Characters used for vCard id generation
*
* @var array
*/
private $vcard_id_chars = array(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 'A', 'B', 'C', 'D', 'E', 'F');
/**
* CardDAV server connection (curl handle)
*
* @var resource
*/
private $curl = false;
/**
* Debug on or off
*
* @var boolean
*/
private $debug = false;
/**
* All available debug information
*
* @var array
*/
private $debug_information = array();
/**
* Sync-token for sync-collection operations.
*
* @var array[string]
*/
private $synctoken = array();
/* VCard File URL Extension
*
* @var string
*/
private $url_vcard_extension;
/**
* Exception codes
*/
const EXCEPTION_WRONG_HTTP_STATUS_CODE_GET = 1000;
const EXCEPTION_WRONG_HTTP_STATUS_CODE_GET_VCARD = 1001;
const EXCEPTION_WRONG_HTTP_STATUS_CODE_GET_XML_VCARD = 1002;
const EXCEPTION_WRONG_HTTP_STATUS_CODE_DELETE = 1003;
const EXCEPTION_WRONG_HTTP_STATUS_CODE_ADD = 1004;
const EXCEPTION_WRONG_HTTP_STATUS_CODE_UPDATE = 1005;
const EXCEPTION_MALFORMED_XML_RESPONSE = 1006;
const EXCEPTION_COULD_NOT_GENERATE_NEW_VCARD_ID = 1007;
const EXCEPTION_COULD_NOT_FIND_VCARD_HREF = 1008;
/**
* Constructor
* Sets the CardDAV server url
*
* @param string $url CardDAV server url
* @param string $url_vcard_extension extension needed to recover the vcard, it could be empty
*/
public function __construct($url = null, $url_vcard_extension = '.vcf') {
if ($url !== null) {
$this->set_url($url);
}
$this->url_vcard_extension = $url_vcard_extension;
}
/**
* Sets debug information
*
* @param array $debug_information Debug information
* @return void
*/
public function set_debug(array $debug_information) {
$this->debug_information[] = $debug_information;
}
/**
* Sets the CardDAV server url
*
* @param string $url CardDAV server url
* @return void
*/
public function set_url($url) {
$this->url = $url;
// Url always end with trailing /
if (substr($this->url, -1, 1) !== '/') {
$this->url .= '/';
}
$this->url_parts = parse_url($this->url);
}
/**
* Sets authentication information
*
* @param string $username CardDAV server username
* @param string $password CardDAV server password
* @return void
*/
public function set_auth($username, $password) {
$this->username = $username;
$this->password = $password;
$this->auth = $username . ':' . $password;
}
/**
* Gets all available debug information
*
* @return array $this->debug_information All available debug information
*/
public function get_debug() {
return $this->debug_information;
}
/**
* Sets the CardDAV vcard url extension
*
* Most providers do requests handling Vcards with .vcf, however
* this isn't always the case and some providers (such as Google)
* returned a 404 if the .vcf extension is used - or the other
* way around, returning 404 unless .vcf is used.
*
* Both approaches are technically correct, see rfc635
* http://tools.ietf.org/html/rfc6352
*
*
* @param string $extension File extension
* @return void
*/
public function set_vcard_extension($extension) {
$this->url_vcard_extension = $extension;
}
/**
* Gets all vCards including additional information from the CardDAV server.
* This operation could be slow if you have a lot of vcards.
*
* @param boolean $include_vcards Include vCards within the response (simplified only)
* @param boolean $raw Get response raw or simplified
* @params boolean $discover Only discover addressbooks
* @return string Raw or simplified XML response
*/
public function get($include_vcards = true, $raw = false, $discover = false) {
// ZLog::Write(LOGLEVEL_DEBUG, sprintf("BackendCardDAV->carddav_backend->get"));
if ($discover) {
$result = $this->query($this->url, 'PROPFIND', null, null, '1');
}
else {
$result = $this->query($this->url, 'PROPFIND');
}
switch ($result['http_code']) {
case 200:
case 207:
if ($raw === true) {
return $result['response'];
}
else {
return $this->simplify($result['response'], $include_vcards);
}
break;
default:
throw new Exception('Woops, something\'s gone wrong! The CardDAV server returned the http status code ' . $result['http_code'] . '.', self::EXCEPTION_WRONG_HTTP_STATUS_CODE_GET);
break;
}
}
/**
* Get all vcards matching a full name or mail.
*
* @param string $pattern Pattern to search
* @param integer $limit Return only N vcards
* @param boolean $include_vcards Include vCards within the response (simplified only)
* @param boolean $raw Get response raw or simplified
* @param boolean $support_fn_search If the server supports searchs by fn
* @return string Raw or simplified XML response
*/
public function search_vcards($pattern, $limit, $include_vcards = true, $raw = false, $support_fn_search = false) {
// ZLog::Write(LOGLEVEL_DEBUG, sprintf("BackendCardDAV->carddav_backend->search_vcards"));
if ($support_fn_search) {
$xml = <<<EOFCONTENTSEARCH
<?xml version="1.0" encoding="utf-8" ?>
<C:addressbook-query xmlns:D="DAV:" xmlns:C="urn:ietf:params:xml:ns:carddav">
<D:prop>
<D:getetag/>
<C:address-data>
<C:allprop/>
</C:address-data>
</D:prop>
<C:filter test="anyof">
<C:prop-filter name="FN">
<C:text-match collation="i;unicode-casemap" negate-condition="no" match-type="contains">$pattern</C:text-match>
</C:prop-filter>
</C:filter>
<C:limit>
<C:nresults>$limit</C:nresults>
</C:limit>
</C:addressbook-query>
EOFCONTENTSEARCH;
}
else {
$xml = <<<EOFCONTENTSEARCH
<?xml version="1.0" encoding="utf-8" ?>
<C:addressbook-query xmlns:D="DAV:" xmlns:C="urn:ietf:params:xml:ns:carddav">
<D:prop>
<D:getetag/>
<C:address-data>
<C:allprop/>
</C:address-data>
</D:prop>
<C:filter test="anyof">
<C:prop-filter name="sn">
<C:text-match collation="i;unicode-casemap" negate-condition="no" match-type="contains">$pattern</C:text-match>
</C:prop-filter>
<C:prop-filter name="givenname">
<C:text-match collation="i;unicode-casemap" negate-condition="no" match-type="contains">$pattern</C:text-match>
</C:prop-filter>
<C:prop-filter name="email">
<C:text-match collation="i;unicode-casemap" negate-condition="no" match-type="contains">$pattern</C:text-match>
</C:prop-filter>
</C:filter>
<C:limit>
<C:nresults>$limit</C:nresults>
</C:limit>
</C:addressbook-query>
EOFCONTENTSEARCH;
}
return $this->do_query_report($xml, $include_vcards, $raw, true);
}
/**
* Get all vcards or changes since the last sync.
*
* @param boolean $initial If the sync should be full
* @param boolean $include_vcards If the vCards should be included within the response
* @param boolean $support_carddav_sync If the cardDAV server supports sync-collection operations (DAViCal supports it)
* @return string Simplified XML response
*/
public function do_sync($initial = true, $include_vcards = false, $support_carddav_sync = false) {
// ZLog::Write(LOGLEVEL_DEBUG, sprintf("BackendCardDAV->carddav_backend->do_sync"));
if ($support_carddav_sync) {
if ($initial) {
$token = "";
}
else {
$token = $this->synctoken[$this->url];
}
$xml = <<<EOFXMLINITIALSYNC
<?xml version="1.0" encoding="utf-8"?>
<D:sync-collection xmlns:D="DAV:">
<D:sync-token>$token</D:sync-token>
<D:sync-level>1</D:sync-level>
<D:prop>
<D:getetag/>
<D:getlastmodified/>
</D:prop>
</D:sync-collection>
EOFXMLINITIALSYNC;
return $this->do_query_report($xml, $include_vcards, false);
}
else {
return $this->get($include_vcards, false);
}
}
/**
* Do a REPORT query against the server
*
* @param string $xml XML body request
* @param boolean $include_vcards If the vCards should be included within the response
* @param boolean $raw If the response should be raw or XML simplified
* @param boolean $remove_duplicates If we will apply uniqness to the response vcards
* @return string
*/
private function do_query_report($xml, $include_vcards = true, $raw = false, $remove_duplicates = false) {
// ZLog::Write(LOGLEVEL_DEBUG, sprintf("BackendCardDAV->carddav_backend->do_query_report"));
$result = $this->query($this->url, 'REPORT', $xml, 'text/xml');
try {
switch ($result['http_code']) {
case 200:
case 207:
if ($raw === true) {
return $result['response'];
}
else {
return $this->simplify($result['response'], $include_vcards, $remove_duplicates);
}
break;
default:
throw new Exception('Woops, something\'s gone wrong! The CardDAV server returned the http status code ' . $result['http_code'] . '.', self::EXCEPTION_WRONG_HTTP_STATUS_CODE_GET);
break;
}
}
catch(Exception $ex) {
// vcard not found
if ($ex->getCode() == self::EXCEPTION_COULD_NOT_FIND_VCARD_HREF) {
if (strlen($this->url_vcard_extension) == 0 || stripos($xml, $this->url_vcard_extension) === FALSE) {
throw $ex;
}
else {
// try to do the same without the $this->url_vcard_extension
return $this->do_query_report(str_ireplace($this->url_vcard_extension, "", $xml), $include_vcards, $raw, $remove_duplicates);
}
}
else {
throw $ex;
}
}
}
/**
* Gets a clean vCard from the CardDAV server
*
* @param string $vcard_href vCard href on the CardDAV server
* @return string vCard (text/vcard)
*/
private function get_vcard($vcard_href) {
// ZLog::Write(LOGLEVEL_DEBUG, sprintf("BackendCardDAV->carddav_backend->get_vcard"));
$url = $this->url_parts['scheme'] . '://' . $this->url_parts['host'] . ':' . $this->url_parts['port'] . $vcard_href;
$result = $this->query($url, 'GET');
switch ($result['http_code']) {
case 200:
case 207:
return $result['response'];
break;
default:
throw new Exception('Woops, something\'s gone wrong! The CardDAV server returned the http status code ' . $result['http_code'] . '.', self::EXCEPTION_WRONG_HTTP_STATUS_CODE_GET_VCARD);
break;
}
}
/**
* Gets a vCard + XML from the CardDAV Server
*
* @param string $vcard_id vCard id on the CardDAV Server
* @return string Raw or simplified vCard (text/xml)
*/
public function get_xml_vcard($vcard_id) {
// ZLog::Write(LOGLEVEL_DEBUG, sprintf("BackendCardDAV->carddav_backend->get_xml_vcard"));
$href = $this->url_parts['path'] . str_replace($this->url_vcard_extension, null, $vcard_id) . $this->url_vcard_extension;
// If we don't ask for allprop, SOGo doesn't return the content_type
$xml = <<<EOFXMLGETXMLVCARD
<?xml version="1.0" encoding="utf-8" ?>
<C:addressbook-multiget xmlns:D="DAV:" xmlns:C="urn:ietf:params:xml:ns:carddav">
<D:prop>
<D:getetag/>
<D:getlastmodified/>
<C:address-data>
<C:allprop/>
</C:address-data>
</D:prop>
<D:href>$href</D:href>
</C:addressbook-multiget>
EOFXMLGETXMLVCARD;
return $this->do_query_report($xml);
}
/**
* Enables the debug mode
*
* @return void
*/
public function enable_debug() {
$this->debug = true;
}
/**
* Checks if the CardDAV server is reachable
*
* @return boolean
*/
public function check_connection() {
// ZLog::Write(LOGLEVEL_DEBUG, sprintf("BackendCardDAV->carddav_backend->check_connection"));
$result = $this->query($this->url, 'OPTIONS');
$status = false;
switch($result['http_code']) {
case 200:
case 207:
$status = true;
break;
}
return $status;
}
/**
* Deletes an entry from the CardDAV server
*
* @param string $vcard_id vCard id on the CardDAV server
* @return boolean
*/
public function delete($vcard_id) {
// ZLog::Write(LOGLEVEL_DEBUG, sprintf("BackendCardDAV->carddav_backend->delete"));
$result = $this->query($this->url . $vcard_id . $this->url_vcard_extension, 'DELETE');
switch ($result['http_code']) {
case 204:
return true;
break;
default:
throw new Exception('Woops, something\'s gone wrong! The CardDAV server returned the http status code ' . $result['http_code'] . '.', self::EXCEPTION_WRONG_HTTP_STATUS_CODE_DELETE);
break;
}
}
/**
* Adds an entry to the CardDAV server
*
* @param string $vcard vCard
* @param string $vcard_id vCard id on the CardDAV server
* @return string The new vCard id
*/
public function add($vcard, $vcard_id = null) {
// ZLog::Write(LOGLEVEL_DEBUG, sprintf("BackendCardDAV->carddav_backend->add"));
if ($vcard_id === null) {
$vcard_id = $this->generate_vcard_id();
}
$vcard = str_replace("\nEND:VCARD","\nUID:" . $vcard_id . "\r\nEND:VCARD", $vcard);
$result = $this->query($this->url . $vcard_id . $this->url_vcard_extension, 'PUT', $vcard, 'text/vcard');
switch($result['http_code']) {
case 201:
case 204:
return $vcard_id;
break;
default:
throw new Exception('Woops, something\'s gone wrong! The CardDAV server returned the http status code ' . $result['http_code'] . '.', self::EXCEPTION_WRONG_HTTP_STATUS_CODE_ADD);
break;
}
}
/**
* Updates an entry to the CardDAV server
*
* @param string $vcard vCard
* @param string $vcard_id vCard id on the CardDAV server
* @return boolean
*/
public function update($vcard, $vcard_id) {
try {
return $this->add($vcard, $vcard_id);
}
catch (Exception $e) {
throw new Exception($e->getMessage(), self::EXCEPTION_WRONG_HTTP_STATUS_CODE_UPDATE);
}
}
/**
* Simplify CardDAV XML response
*
* @param string $response CardDAV XML response
* @param boolean $include_vcards Include vCards or not
* @param boolean $remove_duplicates If we will apply uniqness to the response vcards
* @return string Simplified CardDAV XML response
*/
private function simplify($response, $include_vcards = true, $remove_duplicates = false) {
$response = $this->remove_namespaces($response);
try {
$xml = new SimpleXMLElement($response);
}
catch(Exception $e) {
throw new Exception('The XML response seems to be malformed and can\'t be simplified!', self::EXCEPTION_MALFORMED_XML_RESPONSE, $e);
}
if (!empty($xml->{'sync-token'})) {
$this->synctoken[$this->url] = $xml->{'sync-token'};
}
$simplified_xml = new XMLWriter();
$simplified_xml->openMemory();
$simplified_xml->setIndent(4);
$simplified_xml->startDocument('1.0', 'utf-8');
$simplified_xml->startElement('response');
if (!empty($xml->response)) {
$unique_etags = array();
foreach ($xml->response as $response) {
if (isset($response->propstat)) {
if ((strlen($this->url_vcard_extension) > 0 && preg_match('/'.$this->url_vcard_extension.'/', $response->href) &&
!(isset($response->propstat->prop->resourcetype) && isset($response->propstat->prop->resourcetype->addressbook)))
|| preg_match('/vcard/', $response->propstat->prop->getcontenttype) || isset($response->propstat->prop->{'address-data'}) || isset($response->propstat->prop->{'addressbook-data'})) {
// It's a vcard
$id = basename($response->href);
$id = str_replace($this->url_vcard_extension, null, $id);
if (!empty($id)) {
$simplified_xml->startElement('element');
$simplified_xml->writeElement('id', $id);
$simplified_xml->writeElement('etag', str_replace('"', null, $response->propstat->prop->getetag));
$simplified_xml->writeElement('last_modified', $response->propstat->prop->getlastmodified);
if ($include_vcards === true) {
if (isset($response->propstat->prop->{'address-data'})) {
// We already have the full vcard
$simplified_xml->writeElement('vcard', $response->propstat->prop->{'address-data'});
}
else if (isset($response->propstat->prop->{'addressbook-data'})) {
// We already have the full vcard, also
$simplified_xml->writeElement('vcard', $response->propstat->prop->{'addressbook-data'});
}
else {
// We don't have the vcard, we need to get it. We never should hit here, it would mean a buggy server
$simplified_xml->writeElement('vcard', $this->get_vcard($response->href));
}
}
$simplified_xml->endElement();
}
}
else if (isset($response->propstat->prop->resourcetype->addressbook)) {
// It's an addressbook
if (isset($response->propstat->prop->href)) {
$href = $response->propstat->prop->href;
}
else if (isset($response->href)) {
$href = $response->href;
}
else {
$href = null;
}
$url = str_replace($this->url_parts['path'], null, $this->url) . $href;
$simplified_xml->startElement('addressbook_element');
$simplified_xml->writeElement('display_name', $response->propstat->prop->displayname);
$simplified_xml->writeElement('url', $url);
$simplified_xml->writeElement('last_modified', $response->propstat->prop->getlastmodified);
$simplified_xml->endElement();
}
}
else {
// We don't have a propstat node, so it will be an error answer
if (isset($response->status) && preg_match('/404 Not Found/', $response->status)) {
throw new Exception('Not found!', self::EXCEPTION_COULD_NOT_FIND_VCARD_HREF);
}
else {
throw new Exception('The XML response is an error message and can\'t be simplified!', self::EXCEPTION_MALFORMED_XML_RESPONSE);
}
}
}
unset($unique_etags);
}
$simplified_xml->endElement();
$simplified_xml->endDocument();
return $simplified_xml->outputMemory();
}
/**
* Cleans CardDAV XML response
*
* @param string $response CardDAV XML response
* @return string $response Cleaned CardDAV XML response
*/
private function remove_namespaces($response) {
// $response = preg_replace('/<[a-z0-9]+:(.*)/i', '<$1', $response);
// $response = preg_replace('/<\/[a-z0-9]+:(.*)/i', '</$1', $response);
// Removing namespace it's pretty hard with regex.
// Also, each server uses different namespaces, so using namespaces it's impossible
// This uses DOMDocument, so it won't be the fastest or least memory-using way.
// Feel free to suggest or improve it
// http://stackoverflow.com/questions/15634291/remove-name-space-from-xml-file-and-save-as-new-xml
$xsl = <<<EOFXSL
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"><xsl:output method="xml" version="1.0" encoding="UTF-8" />
<xsl:template match="*">
<xsl:element name="{local-name()}">
<xsl:apply-templates select="@* | node()"/>
</xsl:element>
</xsl:template>
</xsl:stylesheet>
EOFXSL;
$dom = new DOMDocument();
$dom->loadXML($response);
$stylesheet = new DOMDocument();
$stylesheet->loadXML($xsl);
$xsltprocessor = new XSLTProcessor();
$xsltprocessor->importStylesheet($stylesheet);
$response = $xsltprocessor->transformToXML($dom);
$dom = null;
$stylesheet = null;
$xsltprocessor = null;
return $response;
}
/**
* Curl initialization
*
* @return void
*/
public function curl_init() {
if ($this->curl === false) {
$this->curl = curl_init();
curl_setopt($this->curl, CURLOPT_HEADER, true);
curl_setopt($this->curl, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($this->curl, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($this->curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($this->curl, CURLOPT_USERAGENT, self::USERAGENT.self::VERSION);
if ($this->auth !== null) {
curl_setopt($this->curl, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
curl_setopt($this->curl, CURLOPT_USERPWD, $this->auth);
}
}
}
/**
* Query the CardDAV server via curl and returns the response
*
* @param string $url CardDAV server URL
* @param string $method HTTP method like (OPTIONS, GET, HEAD, POST, PUT, DELETE, TRACE, COPY, MOVE)
* @param string $content Content for CardDAV queries
* @param string $content_type Set content type
* @param string $depth Set Depth
* @return array Raw CardDAV Response and http status code
*/
private function query($url, $method, $content = null, $content_type = null, $depth = "infinity") {
// ZLog::Write(LOGLEVEL_DEBUG, sprintf("BackendCardDAV->carddav_backend->query - '%s' '%s' '%s' '%s'", $url, $method, $content, $content_type));
$this->curl_init();
curl_setopt($this->curl, CURLOPT_URL, $url);
curl_setopt($this->curl, CURLOPT_CUSTOMREQUEST, $method);
if ($content !== null) {
curl_setopt($this->curl, CURLOPT_POST, true);
curl_setopt($this->curl, CURLOPT_POSTFIELDS, $content);
}
else {
curl_setopt($this->curl, CURLOPT_POST, false);
curl_setopt($this->curl, CURLOPT_POSTFIELDS, null);
}
if ($content_type !== null) {
curl_setopt($this->curl, CURLOPT_HTTPHEADER, array('Content-type: '.$content_type. '; charset=utf-8', 'Depth: '.$depth));
}
else {
curl_setopt($this->curl, CURLOPT_HTTPHEADER, array('Depth: '.$depth));
}
$complete_response = curl_exec($this->curl);
$header_size = curl_getinfo($this->curl, CURLINFO_HEADER_SIZE);
$http_code = curl_getinfo($this->curl, CURLINFO_HTTP_CODE);
$header = trim(substr($complete_response, 0, $header_size));
$response = substr($complete_response, $header_size);
$return = array(
'response' => $response,
'http_code' => $http_code
);
if ($this->debug === true) {
$debug = $return;
$debug['url'] = $url;
$debug['method'] = $method;
$debug['content'] = $content;
$debug['content_type'] = $content_type;
$debug['header'] = $header;
$this->set_debug($debug);
}
return $return;
}
/**
* Returns a valid and unused vCard id
*
* @return string $vcard_id Valid vCard id
*/
private function generate_vcard_id() {
$vcard_id = null;
for ($number = 0; $number <= 25; $number ++) {
if ($number == 8 || $number == 17) {
$vcard_id .= '-';
}
else {
$vcard_id .= $this->vcard_id_chars[mt_rand(0, (count($this->vcard_id_chars) - 1))];
}
}
try {
$carddav = new carddav_backend($this->url);
$carddav->set_auth($this->username, $this->password);
$result = $carddav->query($this->url . $vcard_id . $this->url_vcard_extension, 'GET');
if ($result['http_code'] !== 404) {
$vcard_id = $this->generate_vcard_id();
}
return $vcard_id;
}
catch (Exception $e) {
throw new Exception($e->getMessage(), self::EXCEPTION_COULD_NOT_GENERATE_NEW_VCARD_ID);
}
}
/**
* Destructor
* Close curl connection if it's open
*
* @return void
*/
public function __destruct() {
$this->disconnect();
}
/**
* Disconnect curl connection
*
*/
public function disconnect() {
if ($this->curl !== false) {
curl_close($this->curl);
$this->curl = false;
}
}
}
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