From 0b02a6d123b2014705998c94ddf3d460948d3eac Mon Sep 17 00:00:00 2001
From: redmatrix <git@macgirvin.com>
Date: Tue, 10 May 2016 17:26:44 -0700
Subject: initial sabre upgrade (needs lots of work - to wit: authentication,
 redo the browser interface, and rework event export/import)

---
 .../dav/lib/CardDAV/Xml/Filter/AddressData.php     |  59 +++++++
 .../dav/lib/CardDAV/Xml/Filter/ParamFilter.php     |  89 ++++++++++
 .../dav/lib/CardDAV/Xml/Filter/PropFilter.php      |  98 +++++++++++
 .../CardDAV/Xml/Property/SupportedAddressData.php  |  83 +++++++++
 .../CardDAV/Xml/Property/SupportedCollationSet.php |  47 +++++
 .../Xml/Request/AddressBookMultiGetReport.php      | 113 ++++++++++++
 .../CardDAV/Xml/Request/AddressBookQueryReport.php | 192 +++++++++++++++++++++
 7 files changed, 681 insertions(+)
 create mode 100644 vendor/sabre/dav/lib/CardDAV/Xml/Filter/AddressData.php
 create mode 100644 vendor/sabre/dav/lib/CardDAV/Xml/Filter/ParamFilter.php
 create mode 100644 vendor/sabre/dav/lib/CardDAV/Xml/Filter/PropFilter.php
 create mode 100644 vendor/sabre/dav/lib/CardDAV/Xml/Property/SupportedAddressData.php
 create mode 100644 vendor/sabre/dav/lib/CardDAV/Xml/Property/SupportedCollationSet.php
 create mode 100644 vendor/sabre/dav/lib/CardDAV/Xml/Request/AddressBookMultiGetReport.php
 create mode 100644 vendor/sabre/dav/lib/CardDAV/Xml/Request/AddressBookQueryReport.php

(limited to 'vendor/sabre/dav/lib/CardDAV/Xml')

diff --git a/vendor/sabre/dav/lib/CardDAV/Xml/Filter/AddressData.php b/vendor/sabre/dav/lib/CardDAV/Xml/Filter/AddressData.php
new file mode 100644
index 000000000..34028db85
--- /dev/null
+++ b/vendor/sabre/dav/lib/CardDAV/Xml/Filter/AddressData.php
@@ -0,0 +1,59 @@
+<?php
+
+namespace Sabre\CardDAV\Xml\Filter;
+
+use Sabre\Xml\Reader;
+use Sabre\Xml\XmlDeserializable;
+
+/**
+ * AddressData parser.
+ *
+ * This class parses the {urn:ietf:params:xml:ns:carddav}address-data XML
+ * element, as defined in:
+ *
+ * http://tools.ietf.org/html/rfc6352#section-10.4
+ *
+ * This element is used in two distinct places, but this one specifically
+ * encodes the address-data element as it appears in the addressbook-query
+ * adressbook-multiget REPORT requests.
+ *
+ * @copyright Copyright (C) fruux GmbH (https://fruux.com/)
+ * @author Evert Pot (http://www.rooftopsolutions.nl/)
+ * @license http://sabre.io/license/ Modified BSD License
+ */
+class AddressData implements XmlDeserializable {
+
+    /**
+     * The deserialize method is called during xml parsing.
+     *
+     * This method is called statictly, this is because in theory this method
+     * may be used as a type of constructor, or factory method.
+     *
+     * Often you want to return an instance of the current class, but you are
+     * free to return other data as well.
+     *
+     * You are responsible for advancing the reader to the next element. Not
+     * doing anything will result in a never-ending loop.
+     *
+     * If you just want to skip parsing for this element altogether, you can
+     * just call $reader->next();
+     *
+     * $reader->parseInnerTree() will parse the entire sub-tree, and advance to
+     * the next element.
+     *
+     * @param Reader $reader
+     * @return mixed
+     */
+    static function xmlDeserialize(Reader $reader) {
+
+        $result = [
+            'contentType' => $reader->getAttribute('content-type') ?: 'text/vcard',
+            'version'     => $reader->getAttribute('version') ?: '3.0',
+        ];
+
+        $reader->next();
+        return $result;
+
+    }
+
+}
diff --git a/vendor/sabre/dav/lib/CardDAV/Xml/Filter/ParamFilter.php b/vendor/sabre/dav/lib/CardDAV/Xml/Filter/ParamFilter.php
new file mode 100644
index 000000000..9646ae3e6
--- /dev/null
+++ b/vendor/sabre/dav/lib/CardDAV/Xml/Filter/ParamFilter.php
@@ -0,0 +1,89 @@
+<?php
+
+namespace Sabre\CardDAV\Xml\Filter;
+
+use Sabre\Xml\Element;
+use Sabre\Xml\Reader;
+use Sabre\DAV\Exception\BadRequest;
+use Sabre\CardDAV\Plugin;
+
+/**
+ * ParamFilter parser.
+ *
+ * This class parses the {urn:ietf:params:xml:ns:carddav}param-filter XML
+ * element, as defined in:
+ *
+ * http://tools.ietf.org/html/rfc6352#section-10.5.2
+ *
+ * The result will be spit out as an array.
+ *
+ * @copyright Copyright (C) fruux GmbH (https://fruux.com/)
+ * @author Evert Pot (http://evertpot.com/)
+ * @license http://sabre.io/license/ Modified BSD License
+ */
+abstract class ParamFilter implements Element {
+
+    /**
+     * The deserialize method is called during xml parsing.
+     *
+     * This method is called statictly, this is because in theory this method
+     * may be used as a type of constructor, or factory method.
+     *
+     * Often you want to return an instance of the current class, but you are
+     * free to return other data as well.
+     *
+     * You are responsible for advancing the reader to the next element. Not
+     * doing anything will result in a never-ending loop.
+     *
+     * If you just want to skip parsing for this element altogether, you can
+     * just call $reader->next();
+     *
+     * $reader->parseInnerTree() will parse the entire sub-tree, and advance to
+     * the next element.
+     *
+     * @param Reader $reader
+     * @return mixed
+     */
+    static function xmlDeserialize(Reader $reader) {
+
+        $result = [
+            'name'           => null,
+            'is-not-defined' => false,
+            'text-match'     => null,
+        ];
+
+        $att = $reader->parseAttributes();
+        $result['name'] = $att['name'];
+
+        $elems = $reader->parseInnerTree();
+
+        if (is_array($elems)) foreach ($elems as $elem) {
+
+            switch ($elem['name']) {
+
+                case '{' . Plugin::NS_CARDDAV . '}is-not-defined' :
+                    $result['is-not-defined'] = true;
+                    break;
+                case '{' . Plugin::NS_CARDDAV . '}text-match' :
+                    $matchType = isset($elem['attributes']['match-type']) ? $elem['attributes']['match-type'] : 'contains';
+
+                    if (!in_array($matchType, ['contains', 'equals', 'starts-with', 'ends-with'])) {
+                        throw new BadRequest('Unknown match-type: ' . $matchType);
+                    }
+                    $result['text-match'] = [
+                        'negate-condition' => isset($elem['attributes']['negate-condition']) && $elem['attributes']['negate-condition'] === 'yes',
+                        'collation'        => isset($elem['attributes']['collation']) ? $elem['attributes']['collation'] : 'i;unicode-casemap',
+                        'value'            => $elem['value'],
+                        'match-type'       => $matchType,
+                    ];
+                    break;
+
+            }
+
+        }
+
+        return $result;
+
+    }
+
+}
diff --git a/vendor/sabre/dav/lib/CardDAV/Xml/Filter/PropFilter.php b/vendor/sabre/dav/lib/CardDAV/Xml/Filter/PropFilter.php
new file mode 100644
index 000000000..c162da160
--- /dev/null
+++ b/vendor/sabre/dav/lib/CardDAV/Xml/Filter/PropFilter.php
@@ -0,0 +1,98 @@
+<?php
+
+namespace Sabre\CardDAV\Xml\Filter;
+
+use Sabre\Xml\Reader;
+use Sabre\Xml\XmlDeserializable;
+use Sabre\DAV\Exception\BadRequest;
+use Sabre\CardDAV\Plugin;
+
+/**
+ * PropFilter parser.
+ *
+ * This class parses the {urn:ietf:params:xml:ns:carddav}prop-filter XML
+ * element, as defined in:
+ *
+ * http://tools.ietf.org/html/rfc6352#section-10.5.1
+ *
+ * The result will be spit out as an array.
+ *
+ * @copyright Copyright (C) fruux GmbH (https://fruux.com/)
+ * @author Evert Pot (http://evertpot.com/)
+ * @license http://sabre.io/license/ Modified BSD License
+ */
+class PropFilter implements XmlDeserializable {
+
+    /**
+     * The deserialize method is called during xml parsing.
+     *
+     * This method is called statictly, this is because in theory this method
+     * may be used as a type of constructor, or factory method.
+     *
+     * Often you want to return an instance of the current class, but you are
+     * free to return other data as well.
+     *
+     * You are responsible for advancing the reader to the next element. Not
+     * doing anything will result in a never-ending loop.
+     *
+     * If you just want to skip parsing for this element altogether, you can
+     * just call $reader->next();
+     *
+     * $reader->parseInnerTree() will parse the entire sub-tree, and advance to
+     * the next element.
+     *
+     * @param Reader $reader
+     * @return mixed
+     */
+    static function xmlDeserialize(Reader $reader) {
+
+        $result = [
+            'name'           => null,
+            'test'           => 'anyof',
+            'is-not-defined' => false,
+            'param-filters'  => [],
+            'text-matches'   => [],
+        ];
+
+        $att = $reader->parseAttributes();
+        $result['name'] = $att['name'];
+
+        if (isset($att['test']) && $att['test'] === 'allof') {
+            $result['test'] = 'allof';
+        }
+
+        $elems = $reader->parseInnerTree();
+
+        if (is_array($elems)) foreach ($elems as $elem) {
+
+            switch ($elem['name']) {
+
+                case '{' . Plugin::NS_CARDDAV . '}param-filter' :
+                    $result['param-filters'][] = $elem['value'];
+                    break;
+                case '{' . Plugin::NS_CARDDAV . '}is-not-defined' :
+                    $result['is-not-defined'] = true;
+                    break;
+                case '{' . Plugin::NS_CARDDAV . '}text-match' :
+                    $matchType = isset($elem['attributes']['match-type']) ? $elem['attributes']['match-type'] : 'contains';
+
+                    if (!in_array($matchType, ['contains', 'equals', 'starts-with', 'ends-with'])) {
+                        throw new BadRequest('Unknown match-type: ' . $matchType);
+                    }
+                    $result['text-matches'][] = [
+                        'negate-condition' => isset($elem['attributes']['negate-condition']) && $elem['attributes']['negate-condition'] === 'yes',
+                        'collation'        => isset($elem['attributes']['collation']) ? $elem['attributes']['collation'] : 'i;unicode-casemap',
+                        'value'            => $elem['value'],
+                        'match-type'       => $matchType,
+                    ];
+                    break;
+
+            }
+
+        }
+
+        return $result;
+
+    }
+
+}
diff --git a/vendor/sabre/dav/lib/CardDAV/Xml/Property/SupportedAddressData.php b/vendor/sabre/dav/lib/CardDAV/Xml/Property/SupportedAddressData.php
new file mode 100644
index 000000000..6ff57b6e3
--- /dev/null
+++ b/vendor/sabre/dav/lib/CardDAV/Xml/Property/SupportedAddressData.php
@@ -0,0 +1,83 @@
+<?php
+
+namespace Sabre\CardDAV\Xml\Property;
+
+use Sabre\Xml\Writer;
+use Sabre\Xml\XmlSerializable;
+use Sabre\CardDAV\Plugin;
+
+/**
+ * Supported-address-data property
+ *
+ * This property is a representation of the supported-address-data property
+ * in the CardDAV namespace.
+ *
+ * This property is defined in:
+ *
+ * http://tools.ietf.org/html/rfc6352#section-6.2.2
+ *
+ * @copyright Copyright (C) fruux GmbH (https://fruux.com/)
+ * @author Evert Pot (http://evertpot.com/)
+ * @license http://sabre.io/license/ Modified BSD License
+ */
+class SupportedAddressData implements XmlSerializable {
+
+    /**
+     * supported versions
+     *
+     * @var array
+     */
+    protected $supportedData = [];
+
+    /**
+     * Creates the property
+     *
+     * @param array|null $supportedData
+     */
+    function __construct(array $supportedData = null) {
+
+        if (is_null($supportedData)) {
+            $supportedData = [
+                ['contentType' => 'text/vcard', 'version' => '3.0'],
+                ['contentType' => 'text/vcard', 'version' => '4.0'],
+                ['contentType' => 'application/vcard+json', 'version' => '4.0'],
+            ];
+        }
+
+        $this->supportedData = $supportedData;
+
+    }
+
+    /**
+     * The xmlSerialize metod is called during xml writing.
+     *
+     * Use the $writer argument to write its own xml serialization.
+     *
+     * An important note: do _not_ create a parent element. Any element
+     * implementing XmlSerializble should only ever write what's considered
+     * its 'inner xml'.
+     *
+     * The parent of the current element is responsible for writing a
+     * containing element.
+     *
+     * This allows serializers to be re-used for different element names.
+     *
+     * If you are opening new elements, you must also close them again.
+     *
+     * @param Writer $writer
+     * @return void
+     */
+    function xmlSerialize(Writer $writer) {
+
+        foreach ($this->supportedData as $supported) {
+            $writer->startElement('{' . Plugin::NS_CARDDAV . '}address-data-type');
+            $writer->writeAttributes([
+                'content-type' => $supported['contentType'],
+                'version'      => $supported['version']
+                ]);
+            $writer->endElement(); // address-data-type
+        }
+
+    }
+
+}
diff --git a/vendor/sabre/dav/lib/CardDAV/Xml/Property/SupportedCollationSet.php b/vendor/sabre/dav/lib/CardDAV/Xml/Property/SupportedCollationSet.php
new file mode 100644
index 000000000..1fc064900
--- /dev/null
+++ b/vendor/sabre/dav/lib/CardDAV/Xml/Property/SupportedCollationSet.php
@@ -0,0 +1,47 @@
+<?php
+
+namespace Sabre\CardDAV\Xml\Property;
+
+use Sabre\Xml\Writer;
+use Sabre\Xml\XmlSerializable;
+
+/**
+ * supported-collation-set property
+ *
+ * This property is a representation of the supported-collation-set property
+ * in the CardDAV namespace.
+ *
+ * @copyright Copyright (C) fruux GmbH (https://fruux.com/)
+ * @author Evert Pot (http://evertpot.com/)
+ * @license http://sabre.io/license/ Modified BSD License
+ */
+class SupportedCollationSet implements XmlSerializable {
+
+    /**
+     * The xmlSerialize metod is called during xml writing.
+     *
+     * Use the $writer argument to write its own xml serialization.
+     *
+     * An important note: do _not_ create a parent element. Any element
+     * implementing XmlSerializble should only ever write what's considered
+     * its 'inner xml'.
+     *
+     * The parent of the current element is responsible for writing a
+     * containing element.
+     *
+     * This allows serializers to be re-used for different element names.
+     *
+     * If you are opening new elements, you must also close them again.
+     *
+     * @param Writer $writer
+     * @return void
+     */
+    function xmlSerialize(Writer $writer) {
+
+        foreach (['i;ascii-casemap', 'i;octet', 'i;unicode-casemap'] as $coll) {
+            $writer->writeElement('{urn:ietf:params:xml:ns:carddav}supported-collation', $coll);
+        }
+
+    }
+
+}
diff --git a/vendor/sabre/dav/lib/CardDAV/Xml/Request/AddressBookMultiGetReport.php b/vendor/sabre/dav/lib/CardDAV/Xml/Request/AddressBookMultiGetReport.php
new file mode 100644
index 000000000..c97c5eb4f
--- /dev/null
+++ b/vendor/sabre/dav/lib/CardDAV/Xml/Request/AddressBookMultiGetReport.php
@@ -0,0 +1,113 @@
+<?php
+
+namespace Sabre\CardDAV\Xml\Request;
+
+use Sabre\CardDAV\Plugin;
+use Sabre\Uri;
+use Sabre\Xml\Reader;
+use Sabre\Xml\XmlDeserializable;
+
+/**
+ * AddressBookMultiGetReport request parser.
+ *
+ * This class parses the {urn:ietf:params:xml:ns:carddav}addressbook-multiget
+ * REPORT, as defined in:
+ *
+ * http://tools.ietf.org/html/rfc6352#section-8.7
+ *
+ * @copyright Copyright (C) fruux GmbH (https://fruux.com/)
+ * @author Evert Pot (http://www.rooftopsolutions.nl/)
+ * @license http://sabre.io/license/ Modified BSD License
+ */
+class AddressBookMultiGetReport implements XmlDeserializable {
+
+    /**
+     * An array with requested properties.
+     *
+     * @var array
+     */
+    public $properties;
+
+    /**
+     * This is an array with the urls that are being requested.
+     *
+     * @var array
+     */
+    public $hrefs;
+
+    /**
+     * The mimetype of the content that should be returend. Usually
+     * text/vcard.
+     *
+     * @var string
+     */
+    public $contentType = null;
+
+    /**
+     * The version of vcard data that should be returned. Usually 3.0,
+     * referring to vCard 3.0.
+     *
+     * @var string
+     */
+    public $version = null;
+
+    /**
+     * The deserialize method is called during xml parsing.
+     *
+     * This method is called statictly, this is because in theory this method
+     * may be used as a type of constructor, or factory method.
+     *
+     * Often you want to return an instance of the current class, but you are
+     * free to return other data as well.
+     *
+     * You are responsible for advancing the reader to the next element. Not
+     * doing anything will result in a never-ending loop.
+     *
+     * If you just want to skip parsing for this element altogether, you can
+     * just call $reader->next();
+     *
+     * $reader->parseInnerTree() will parse the entire sub-tree, and advance to
+     * the next element.
+     *
+     * @param Reader $reader
+     * @return mixed
+     */
+    static function xmlDeserialize(Reader $reader) {
+
+        $elems = $reader->parseInnerTree([
+            '{urn:ietf:params:xml:ns:carddav}address-data' => 'Sabre\\CardDAV\\Xml\\Filter\\AddressData',
+            '{DAV:}prop'                                   => 'Sabre\\Xml\\Element\\KeyValue',
+        ]);
+
+        $newProps = [
+            'hrefs'      => [],
+            'properties' => []
+        ];
+
+        foreach ($elems as $elem) {
+
+            switch ($elem['name']) {
+
+                case '{DAV:}prop' :
+                    $newProps['properties'] = array_keys($elem['value']);
+                    if (isset($elem['value']['{' . Plugin::NS_CARDDAV . '}address-data'])) {
+                        $newProps += $elem['value']['{' . Plugin::NS_CARDDAV . '}address-data'];
+                    }
+                    break;
+                case '{DAV:}href' :
+                    $newProps['hrefs'][] = Uri\resolve($reader->contextUri, $elem['value']);
+                    break;
+
+            }
+
+        }
+
+        $obj = new self();
+        foreach ($newProps as $key => $value) {
+            $obj->$key = $value;
+        }
+        return $obj;
+
+    }
+
+}
diff --git a/vendor/sabre/dav/lib/CardDAV/Xml/Request/AddressBookQueryReport.php b/vendor/sabre/dav/lib/CardDAV/Xml/Request/AddressBookQueryReport.php
new file mode 100644
index 000000000..a68ac5800
--- /dev/null
+++ b/vendor/sabre/dav/lib/CardDAV/Xml/Request/AddressBookQueryReport.php
@@ -0,0 +1,192 @@
+<?php
+
+namespace Sabre\CardDAV\Xml\Request;
+
+use Sabre\Xml\Reader;
+use Sabre\Xml\XmlDeserializable;
+use Sabre\DAV\Exception\BadRequest;
+use Sabre\CardDAV\Plugin;
+
+/**
+ * AddressBookQueryReport request parser.
+ *
+ * This class parses the {urn:ietf:params:xml:ns:carddav}addressbook-query
+ * REPORT, as defined in:
+ *
+ * http://tools.ietf.org/html/rfc6352#section-8.6
+ *
+ * @copyright Copyright (C) fruux GmbH (https://fruux.com/)
+ * @author Evert Pot (http://www.rooftopsolutions.nl/)
+ * @license http://sabre.io/license/ Modified BSD License
+ */
+class AddressBookQueryReport implements XmlDeserializable {
+
+    /**
+     * An array with requested properties.
+     *
+     * @var array
+     */
+    public $properties;
+
+    /**
+     * List of property/component filters.
+     *
+     * This is an array with filters. Every item is a property filter. Every
+     * property filter has the following keys:
+     *   * name - name of the component to filter on
+     *   * test - anyof or allof
+     *   * is-not-defined - Test for non-existence
+     *   * param-filters - A list of parameter filters on the property
+     *   * text-matches - A list of text values the filter needs to match
+     *
+     * Each param-filter has the following keys:
+     *   * name - name of the parameter
+     *   * is-not-defined - Test for non-existence
+     *   * text-match - Match the parameter value
+     *
+     * Each text-match in property filters, and the single text-match in
+     * param-filters have the following keys:
+     *
+     *   * value - value to match
+     *   * match-type - contains, starts-with, ends-with, equals
+     *   * negate-condition - Do the opposite match
+     *   * collation - Usually i;unicode-casemap
+     *
+     * @var array
+     */
+    public $filters;
+
+    /**
+     * The number of results the client wants
+     *
+     * null means it wasn't specified, which in most cases means 'all results'.
+     *
+     * @var int|null
+     */
+    public $limit;
+
+    /**
+     * Either 'anyof' or 'allof'
+     *
+     * @var string
+     */
+    public $test;
+
+    /**
+     * The mimetype of the content that should be returend. Usually
+     * text/vcard.
+     *
+     * @var string
+     */
+    public $contentType = null;
+
+    /**
+     * The version of vcard data that should be returned. Usually 3.0,
+     * referring to vCard 3.0.
+     *
+     * @var string
+     */
+    public $version = null;
+
+
+    /**
+     * The deserialize method is called during xml parsing.
+     *
+     * This method is called statictly, this is because in theory this method
+     * may be used as a type of constructor, or factory method.
+     *
+     * Often you want to return an instance of the current class, but you are
+     * free to return other data as well.
+     *
+     * You are responsible for advancing the reader to the next element. Not
+     * doing anything will result in a never-ending loop.
+     *
+     * If you just want to skip parsing for this element altogether, you can
+     * just call $reader->next();
+     *
+     * $reader->parseInnerTree() will parse the entire sub-tree, and advance to
+     * the next element.
+     *
+     * @param Reader $reader
+     * @return mixed
+     */
+    static function xmlDeserialize(Reader $reader) {
+
+        $elems = (array)$reader->parseInnerTree([
+            '{urn:ietf:params:xml:ns:carddav}prop-filter'  => 'Sabre\\CardDAV\\Xml\\Filter\\PropFilter',
+            '{urn:ietf:params:xml:ns:carddav}param-filter' => 'Sabre\\CardDAV\\Xml\\Filter\\ParamFilter',
+            '{urn:ietf:params:xml:ns:carddav}address-data' => 'Sabre\\CardDAV\\Xml\\Filter\\AddressData',
+            '{DAV:}prop'                                   => 'Sabre\\Xml\\Element\\KeyValue',
+        ]);
+
+        $newProps = [
+            'filters'    => null,
+            'properties' => [],
+            'test'       => 'anyof',
+            'limit'      => null,
+        ];
+
+        if (!is_array($elems)) $elems = [];
+
+        foreach ($elems as $elem) {
+
+            switch ($elem['name']) {
+
+                case '{DAV:}prop' :
+                    $newProps['properties'] = array_keys($elem['value']);
+                    if (isset($elem['value']['{' . Plugin::NS_CARDDAV . '}address-data'])) {
+                        $newProps += $elem['value']['{' . Plugin::NS_CARDDAV . '}address-data'];
+                    }
+                    break;
+                case '{' . Plugin::NS_CARDDAV . '}filter' :
+
+                    if (!is_null($newProps['filters'])) {
+                        throw new BadRequest('You can only include 1 {' . Plugin::NS_CARDDAV . '}filter element');
+                    }
+                    if (isset($elem['attributes']['test'])) {
+                        $newProps['test'] = $elem['attributes']['test'];
+                        if ($newProps['test'] !== 'allof' && $newProps['test'] !== 'anyof') {
+                            throw new BadRequest('The "test" attribute must be one of "allof" or "anyof"');
+                        }
+                    }
+
+                    $newProps['filters'] = [];
+                    foreach ((array)$elem['value'] as $subElem) {
+                        if ($subElem['name'] === '{' . Plugin::NS_CARDDAV . '}prop-filter') {
+                            $newProps['filters'][] = $subElem['value'];
+                        }
+                    }
+                    break;
+                case '{' . Plugin::NS_CARDDAV . '}limit' :
+                    foreach ($elem['value'] as $child) {
+                        if ($child['name'] === '{' . Plugin::NS_CARDDAV . '}nresults') {
+                            $newProps['limit'] = (int)$child['value'];
+                        }
+                    }
+                    break;
+
+            }
+
+        }
+
+        if (is_null($newProps['filters'])) {
+            /*
+             * We are supposed to throw this error, but KDE sometimes does not
+             * include the filter element, and we need to treat it as if no
+             * filters are supplied
+             */
+            //throw new BadRequest('The {' . Plugin::NS_CARDDAV . '}filter element is required for this request');
+            $newProps['filters'] = [];
+
+        }
+
+        $obj = new self();
+        foreach ($newProps as $key => $value) {
+            $obj->$key = $value;
+        }
+
+        return $obj;
+
+    }
+
+}
-- 
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