Implement hide download support for public shares

Signed-off-by: Julius Härtl <jus@bitgrid.net>

appinfo/database.xml

@@ -130,6 +130,12 @@
 				<notnull>false</notnull>
 				<length>4</length>
 			</field>
+			<field>
+				<name>hide_download</name>
+				<type>boolean</type>
+				<default>false</default>
+				<notnull>true</notnull>
+			</field>
 
 			<index>
 				<name>rd_wopi_token_idx</name>

appinfo/info.xml

@@ -4,7 +4,7 @@
 	<name>Collabora Online</name>
 	<summary>Edit office documents directly in your browser.</summary>
 	<description>This application can connect to a Collabora Online server (WOPI Client). Nextcloud is the WOPI Host. Please read the documentation to learn more about that.</description>
-	<version>3.2.4</version>
+	<version>3.2.4-1</version>
 	<licence>agpl</licence>
 	<author>Collabora Productivity based on work of Frank Karlitschek, Victor Dubiniuk</author>
 	<types>

lib/Controller/WopiController.php

@@ -154,7 +154,10 @@ class WopiController extends Controller {
 			'LastModifiedTime' => Helper::toISO8601($file->getMTime()),
 			'EnableInsertRemoteImage' => true,
 			'EnableShare' => true,
-			'HideUserList' => 'desktop'
+			'HideUserList' => 'desktop',
+			'DisablePrint' => $wopi->getHideDownload(),
+			'DisableExport' => $wopi->getHideDownload(),
+			'DisableCopy' => $wopi->getHideDownload()
 		];
 
 		if ($wopi->isTemplateToken()) {

lib/Db/Wopi.php

@@ -81,6 +81,9 @@ class Wopi extends Entity {
 	/** @var int */
 	protected $templateDestination;
 
+	/** @var bool */
+	protected $hideDownload;
+
 	public function __construct() {
 		$this->addType('owner_uid', 'string');
 		$this->addType('editor_uid', 'string');
@@ -92,6 +95,7 @@ class Wopi extends Entity {
 		$this->addType('expiry', 'int');
 		$this->addType('guest_displayname', 'string');
 		$this->addType('templateDestination', 'int');
+		$this->addType('hide_download', 'bool');
 	}
 
 	public function isTemplateToken() {

lib/Db/WopiMapper.php

@@ -64,7 +64,7 @@ class WopiMapper extends Mapper {
 	 * @param int $templateDestination
 	 * @return Wopi
 	 */
-	public function generateFileToken($fileId, $owner, $editor, $version, $updatable, $serverHost, $guestDisplayname, $templateDestination = 0) {
+	public function generateFileToken($fileId, $owner, $editor, $version, $updatable, $serverHost, $guestDisplayname, $templateDestination = 0, $hideDownload = false) {
 		$token = $this->random->generate(32, ISecureRandom::CHAR_LOWER . ISecureRandom::CHAR_UPPER . ISecureRandom::CHAR_DIGITS);
 
 		$wopi = Wopi::fromParams([
@@ -78,6 +78,7 @@ class WopiMapper extends Mapper {
 			'expiry' => $this->timeFactory->getTime() + self::TOKEN_LIFETIME_SECONDS,
 			'guestDisplayname' => $guestDisplayname,
 			'templateDestination' => $templateDestination,
+			'hideDownload' => $hideDownload
 		]);
 
 		/** @var Wopi $wopi */

lib/TokenManager.php

@@ -94,6 +94,7 @@ class TokenManager {
 			$rootFolder = $this->rootFolder;
 			$share = $this->shareManager->getShareByToken($shareToken);
 			$updatable = (bool)($share->getPermissions() & \OCP\Constants::PERMISSION_UPDATE);
+			$hideDownload = $share->getHideDownload();
 			$owneruid = $share->getShareOwner();
 		} else if (!is_null($this->userId)) {
 			try {
@@ -156,7 +157,7 @@ class TokenManager {
 			$guest_name = NULL;
 		}
 
-		$wopi = $this->wopiMapper->generateFileToken($fileId, $owneruid, $editoruid, $version, (int)$updatable, $serverHost, $guest_name);
+		$wopi = $this->wopiMapper->generateFileToken($fileId, $owneruid, $editoruid, $version, (int)$updatable, $serverHost, $guest_name, 0, $hideDownload);
 
 		try {