fix(carddav): return the correct vCard version on report

apps/contactsinteraction/lib/Card.php

@@ -79,6 +79,10 @@ public function getContentType(): ?string {
 		return 'text/vcard; charset=utf-8';
 	}
 
+	public function getVersion(): ?string {
+		return '3.0';
+	}
+
 	/**
 	 * @inheritDoc
 	 */

apps/dav/lib/CardDAV/Card.php

@@ -30,6 +30,11 @@ public function getAddressbookId(): int {
 		return (int)$this->cardData['addressbookid'];
 	}
 
+	public function getVersion(): ?string {
+		preg_match('/^VERSION:([34])\.0/mi', $this->cardData['carddata'], $matches);
+		return isset($matches[1]) ? $matches[1] . '.0' : null;
+	}
+
 	public function getPrincipalUri(): string {
 		return $this->addressBookInfo['principaluri'];
 	}

apps/dav/lib/CardDAV/Plugin.php

@@ -9,6 +9,7 @@
 namespace OCA\DAV\CardDAV;
 
 use OCA\DAV\CardDAV\Xml\Groups;
+use Sabre\DAV\Exception\ReportNotSupported;
 use Sabre\DAV\INode;
 use Sabre\DAV\PropFind;
 use Sabre\DAV\Server;
@@ -58,4 +59,88 @@
 			});
 		}
 	}
+
+	/**
+	 * This function handles the addressbook-query REPORT.
+	 *
+	 * This report is used by the client to filter an addressbook based on a
+	 * complex query.
+	 *
+	 * @param \Sabre\CardDAV\Xml\Request\AddressBookQueryReport $report
+	 */
+	protected function addressbookQueryReport($report) {
+		$depth = $this->server->getHTTPDepth(0);
+
+		if ($depth == 0) {
+			$candidateNodes = [
+				$this->server->tree->getNodeForPath($this->server->getRequestUri()),
+			];
+			if (!$candidateNodes[0] instanceof Card) {
+				throw new ReportNotSupported('The addressbook-query report is not supported on this url with Depth: 0');
+			}
+		} else {
+			$candidateNodes = $this->server->tree->getChildren($this->server->getRequestUri());
+		}
+
+		$validNodes = [];
+		foreach ($candidateNodes as $node) {
+			if (!$node instanceof Card) {
+				continue;
+			}
+
+			$blob = $node->get();
+			if (is_resource($blob)) {
+				$blob = stream_get_contents($blob);
+			}
+
+			if (!$this->validateFilters($blob, $report->filters, $report->test)) {
+				continue;
+			}
+
+			$validNodes[] = $node;
+
+			if ($report->limit && $report->limit <= count($validNodes)) {
+				// We hit the maximum number of items, we can stop now.
+				break;
+			}
+		}
+
+		$result = [];
+		foreach ($validNodes as $validNode) {
+			$contentType = $report->contentType;
+			// we theoretically support versions  3.0 and 4.0 so $vcardType should be dyncamic depending on the node
+			if ($validNode->getVersion()) {
+				$contentType .= '; version=' . $validNode->getVersion();
+			} elseif ($report->version) {
+				$contentType .= '; version=' . $report->version;
+			}
+			$vcardType = $this->negotiateVCard(
+				$contentType
+			);
+			if ($depth == 0) {
+				$href = $this->server->getRequestUri();
+			} else {
+				$href = $this->server->getRequestUri() . '/' . $validNode->getName();
+			}
+
+			/** @psalm-suppress DeprecatedMethod */
+			[$props] = $this->server->getPropertiesForPath($href, $report->properties, 0);
+
+			if (isset($props[200]['{' . self::NS_CARDDAV . '}address-data'])) {
+				$props[200]['{' . self::NS_CARDDAV . '}address-data'] = $this->convertVCard(
+					$props[200]['{' . self::NS_CARDDAV . '}address-data'],
+					$vcardType,
+					$report->addressDataProperties
+				);
+			}
+			$result[] = $props;
+		}
+
+		$prefer = $this->server->getHTTPPrefer();
+
+		$this->server->httpResponse->setStatus(207);
+		$this->server->httpResponse->setHeader('Content-Type', 'application/xml; charset=utf-8');
+		$this->server->httpResponse->setHeader('Vary', 'Brief,Prefer');
+		$this->server->httpResponse->setBody($this->server->generateMultiStatus($result, $prefer['return'] === 'minimal'));
+	}
 }