Alexis Saettler
404 lines
12 KiB
PHP
404 lines
12 KiB
PHP
<?php
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namespace App\Http\Controllers\DAV\Backend\CardDAV;
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use Sabre\DAV;
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use App\Models\User\SyncToken;
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use App\Models\Contact\Contact;
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use Sabre\VObject\Component\VCard;
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use App\Services\VCard\ExportVCard;
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use App\Services\VCard\ImportVCard;
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use Illuminate\Support\Facades\Log;
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use Illuminate\Support\Facades\Auth;
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use Sabre\DAV\Server as SabreServer;
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use Sabre\CardDAV\Backend\SyncSupport;
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use Sabre\CalDAV\Plugin as CalDAVPlugin;
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use Sabre\CardDAV\Backend\AbstractBackend;
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use Sabre\CardDAV\Plugin as CardDAVPlugin;
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use Sabre\DAV\Sync\Plugin as DAVSyncPlugin;
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use App\Http\Controllers\DAV\Backend\IDAVBackend;
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use App\Http\Controllers\DAV\Backend\SyncDAVBackend;
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use App\Http\Controllers\DAV\DAVACL\PrincipalBackend;
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class CardDAVBackend extends AbstractBackend implements SyncSupport, IDAVBackend
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{
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use SyncDAVBackend;
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/**
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* Returns the uri for this backend.
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*
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* @return string
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*/
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public function backendUri()
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{
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return 'contacts';
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}
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/**
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* Returns the list of addressbooks for a specific user.
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*
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* Every addressbook should have the following properties:
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* id - an arbitrary unique id
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* uri - the 'basename' part of the url
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* principaluri - Same as the passed parameter
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*
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* Any additional clark-notation property may be passed besides this. Some
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* common ones are :
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* {DAV:}displayname
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* {urn:ietf:params:xml:ns:carddav}addressbook-description
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* {http://calendarserver.org/ns/}getctag
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*
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* @param string $principalUri
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* @return array
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*/
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public function getAddressBooksForUser($principalUri)
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{
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$name = Auth::user()->name;
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$token = $this->getCurrentSyncToken();
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$des = [
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'id' => $this->backendUri(),
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'uri' => $this->backendUri(),
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'principaluri' => PrincipalBackend::getPrincipalUser(),
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'{DAV:}displayname' => $name,
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'{'.CardDAVPlugin::NS_CARDDAV.'}addressbook-description' => $name,
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];
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if ($token) {
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$des += [
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'{DAV:}sync-token' => $token->id,
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'{'.SabreServer::NS_SABREDAV.'}sync-token' => $token->id,
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'{'.CalDAVPlugin::NS_CALENDARSERVER.'}getctag' => DAVSyncPlugin::SYNCTOKEN_PREFIX.$token->id,
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];
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}
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return [
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$des,
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];
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}
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/**
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* Extension for Calendar objects.
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*
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* @var string
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*/
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public function getExtension()
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{
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return '.vcf';
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}
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/**
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* The getChanges method returns all the changes that have happened, since
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* the specified syncToken in the specified address book.
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*
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* This function should return an array, such as the following:
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*
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* [
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* 'syncToken' => 'The current synctoken',
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* 'added' => [
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* 'new.txt',
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* ],
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* 'modified' => [
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* 'modified.txt',
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* ],
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* 'deleted' => [
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* 'foo.php.bak',
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* 'old.txt'
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* ]
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* ];
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*
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* The returned syncToken property should reflect the *current* syncToken
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* of the calendar, as reported in the {http://sabredav.org/ns}sync-token
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* property. This is needed here too, to ensure the operation is atomic.
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*
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* If the $syncToken argument is specified as null, this is an initial
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* sync, and all members should be reported.
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*
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* The modified property is an array of nodenames that have changed since
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* the last token.
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*
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* The deleted property is an array with nodenames, that have been deleted
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* from collection.
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*
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* The $syncLevel argument is basically the 'depth' of the report. If it's
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* 1, you only have to report changes that happened only directly in
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* immediate descendants. If it's 2, it should also include changes from
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* the nodes below the child collections. (grandchildren)
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*
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* The $limit argument allows a client to specify how many results should
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* be returned at most. If the limit is not specified, it should be treated
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* as infinite.
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*
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* If the limit (infinite or not) is higher than you're willing to return,
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* you should throw a Sabre\DAV\Exception\TooMuchMatches() exception.
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*
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* If the syncToken is expired (due to data cleanup) or unknown, you must
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* return null.
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*
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* The limit is 'suggestive'. You are free to ignore it.
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*
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* @param string $addressBookId
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* @param string $syncToken
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* @param int $syncLevel
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* @param int $limit
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* @return array
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*/
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public function getChangesForAddressBook($addressBookId, $syncToken, $syncLevel, $limit = null)
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{
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return $this->getChanges($syncToken);
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}
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/**
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* Prepare datas for this contact.
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*
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* @param Contact $contact
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* @return array|null
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*/
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private function prepareCard($contact)
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{
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try {
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$vcard = (new ExportVCard())
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->execute([
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'account_id' => Auth::user()->account_id,
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'contact_id' => $contact->id,
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]);
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$carddata = $vcard->serialize();
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return [
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'id' => $contact->hashID(),
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'uri' => $this->encodeUri($contact),
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'carddata' => $carddata,
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'etag' => '"'.md5($carddata).'"',
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'lastmodified' => $contact->updated_at->timestamp,
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];
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} catch (\Exception $e) {
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Log::debug(__CLASS__.' prepareCard: '.(string) $e);
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}
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}
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/**
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* Returns the contact for the specific uri.
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*
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* @param string $uri
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* @return Contact
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*/
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public function getObjectUuid($uuid)
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{
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return Contact::where([
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'account_id' => Auth::user()->account_id,
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'uuid' => $uuid,
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])->first();
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}
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/**
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* Returns the collection of all active contacts.
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*
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* @return \Illuminate\Support\Collection
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*/
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public function getObjects()
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{
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return Auth::user()->account
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->contacts()
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->real()
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->active()
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->get();
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}
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/**
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* Returns all cards for a specific addressbook id.
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*
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* This method should return the following properties for each card:
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* * carddata - raw vcard data
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* * uri - Some unique url
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* * lastmodified - A unix timestamp
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*
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* It's recommended to also return the following properties:
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* * etag - A unique etag. This must change every time the card changes.
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* * size - The size of the card in bytes.
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*
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* If these last two properties are provided, less time will be spent
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* calculating them. If they are specified, you can also ommit carddata.
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* This may speed up certain requests, especially with large cards.
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*
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* @param mixed $addressbookId
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* @return array
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*/
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public function getCards($addressbookId)
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{
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$contacts = $this->getObjects();
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return $contacts->map(function ($contact) {
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return $this->prepareCard($contact);
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});
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}
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/**
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* Returns a specific card.
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*
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* The same set of properties must be returned as with getCards. The only
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* exception is that 'carddata' is absolutely required.
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*
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* If the card does not exist, you must return false.
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*
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* @param mixed $addressBookId
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* @param string $cardUri
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* @return array|bool
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*/
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public function getCard($addressBookId, $cardUri)
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{
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$contact = $this->getObject($cardUri);
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if ($contact) {
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return $this->prepareCard($contact);
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}
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return false;
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}
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/**
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* Creates a new card.
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*
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* The addressbook id will be passed as the first argument. This is the
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* same id as it is returned from the getAddressBooksForUser method.
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*
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* The cardUri is a base uri, and doesn't include the full path. The
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* cardData argument is the vcard body, and is passed as a string.
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*
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* It is possible to return an ETag from this method. This ETag is for the
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* newly created resource, and must be enclosed with double quotes (that
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* is, the string itself must contain the double quotes).
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*
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* You should only return the ETag if you store the carddata as-is. If a
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* subsequent GET request on the same card does not have the same body,
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* byte-by-byte and you did return an ETag here, clients tend to get
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* confused.
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*
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* If you don't return an ETag, you can just return null.
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*
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* @param mixed $addressBookId
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* @param string $cardUri
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* @param string $cardData
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* @return string|null
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*/
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public function createCard($addressBookId, $cardUri, $cardData)
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{
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return $this->updateCard($addressBookId, $cardUri, $cardData);
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}
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/**
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* Updates a card.
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*
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* The addressbook id will be passed as the first argument. This is the
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* same id as it is returned from the getAddressBooksForUser method.
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*
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* The cardUri is a base uri, and doesn't include the full path. The
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* cardData argument is the vcard body, and is passed as a string.
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*
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* It is possible to return an ETag from this method. This ETag should
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* match that of the updated resource, and must be enclosed with double
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* quotes (that is: the string itself must contain the actual quotes).
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*
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* You should only return the ETag if you store the carddata as-is. If a
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* subsequent GET request on the same card does not have the same body,
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* byte-by-byte and you did return an ETag here, clients tend to get
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* confused.
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*
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* If you don't return an ETag, you can just return null.
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*
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* @param mixed $addressBookId
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* @param string $cardUri
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* @param string $cardData
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* @return string|null
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*/
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public function updateCard($addressBookId, $cardUri, $cardData)
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{
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$contact_id = null;
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if ($cardUri) {
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$contact = $this->getObject($cardUri);
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if ($contact) {
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$contact_id = $contact->id;
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}
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}
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try {
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$result = (new ImportVCard(Auth::user()->account_id))
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->execute([
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'contact_id' => $contact_id,
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'entry' => $cardData,
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'behaviour' => ImportVCard::BEHAVIOUR_REPLACE,
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]);
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} catch (\Exception $e) {
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Log::debug(__CLASS__.' updateCard: '.(string) $e);
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}
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if (! array_has($result, 'error')) {
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$contact = Contact::where('account_id', Auth::user()->account_id)
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->find($result['contact_id']);
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$card = $this->prepareCard($contact);
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return $card['etag'];
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}
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}
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/**
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* Deletes a card.
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*
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* @param mixed $addressBookId
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* @param string $cardUri
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* @return bool
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*/
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public function deleteCard($addressBookId, $cardUri)
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{
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return false;
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}
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/**
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* Updates properties for an address book.
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*
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* The list of mutations is stored in a Sabre\DAV\PropPatch object.
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* To do the actual updates, you must tell this object which properties
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* you're going to process with the handle() method.
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*
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* Calling the handle method is like telling the PropPatch object "I
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* promise I can handle updating this property".
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*
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* Read the PropPatch documentation for more info and examples.
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*
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* @param string $addressBookId
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* @param \Sabre\DAV\PropPatch $propPatch
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* @return void|bool
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*/
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public function updateAddressBook($addressBookId, DAV\PropPatch $propPatch)
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{
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return false;
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}
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/**
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* Creates a new address book.
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*
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* This method should return the id of the new address book. The id can be
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* in any format, including ints, strings, arrays or objects.
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*
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* @param string $principalUri
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* @param string $url Just the 'basename' of the url.
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* @param array $properties
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* @return int|bool
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*/
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public function createAddressBook($principalUri, $url, array $properties)
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{
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return false;
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}
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/**
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* Deletes an entire addressbook and all its contents.
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*
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* @param mixed $addressBookId
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* @return void|bool
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*/
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public function deleteAddressBook($addressBookId)
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{
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return false;
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}
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}
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