#1293 added a share action extension "Save to ownCloud"

ownCloud Action Extension/Info.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>OCKeychainAccessGroupIdentifier</key>
+	<string>group.com.owncloud.ios-app</string>
+	<key>OCHasFileProvider</key>
+	<true/>
+	<key>OCAppComponentIdentifier</key>
+	<string>shareExtension</string>
+	<key>OCAppIdentifierPrefix</key>
+	<string>$(AppIdentifierPrefix)</string>
+	<key>OCAppGroupIdentifier</key>
+	<string>group.com.owncloud.ios-app</string>
+	<key>NSExtension</key>
+	<dict>
+		<key>NSExtensionAttributes</key>
+		<dict>
+			<key>NSExtensionActivationRule</key>
+			<string>SUBQUERY (
+    extensionItems,
+    $extensionItem,
+    SUBQUERY (
+        $extensionItem.attachments,
+        $attachment,
+        (
+          ANY $attachment.registeredTypeIdentifiers UTI-CONFORMS-TO &quot;public.data&quot;
+        )
+    ).@count == $extensionItem.attachments.@count
+).@count &gt; 0</string>
+		</dict>
+		<key>NSExtensionPrincipalClass</key>
+		<string>ShareExtensionViewController</string>
+		<key>NSExtensionPointIdentifier</key>
+		<string>com.apple.ui-services</string>
+	</dict>
+</dict>
+</plist>

ownCloud Action Extension/de.lproj/InfoPlist.strings

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+/* 
+  InfoPlist.strings
+  ownCloud
+
+  Created by Matthias Hühne on 11/20/2023.
+  Copyright © 2020 ownCloud GmbH. All rights reserved.
+*/
+
+/*
+ * Copyright (C) 2020, ownCloud GmbH.
+ *
+ * This code is covered by the GNU Public License Version 3.
+ *
+ * For distribution utilizing Apple mechanisms please see https://owncloud.org/contribute/iOS-license-exception/
+ * You should have received a copy of this license along with this program. If not, see <http://www.gnu.org/licenses/gpl-3.0.en.html>.
+ *
+ */
+
+"CFBundleDisplayName" = "Speichern in ownCloud";
+
+"The Share Extension is not available on this system." = "Die Erweiterung ist auf diesem System nicht verfügbar.";
+"Share Extension unavailable" = "Erweiterung nicht verfügbar";

ownCloud Action Extension/en.lproj/InfoPlist.strings

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+/* 
+  InfoPlist.strings
+  ownCloud
+
+  Created by Matthias Hühne on 11/20/2023.
+  Copyright © 2020 ownCloud GmbH. All rights reserved.
+*/
+
+/*
+ * Copyright (C) 2020, ownCloud GmbH.
+ *
+ * This code is covered by the GNU Public License Version 3.
+ *
+ * For distribution utilizing Apple mechanisms please see https://owncloud.org/contribute/iOS-license-exception/
+ * You should have received a copy of this license along with this program. If not, see <http://www.gnu.org/licenses/gpl-3.0.en.html>.
+ *
+ */
+
+"CFBundleDisplayName" = "Save to ownCloud";
+
+"The Share Extension is not available on this system." = "The Share Extension is not available on this system.";
+"Share Extension unavailable" = "Share Extension unavailable";

ownCloud Action Extension/ownCloud Action Extension.entitlements

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>com.apple.security.application-groups</key>
+	<array>
+		<string>group.com.owncloud.ios-app</string>
+	</array>
+	<key>keychain-access-groups</key>
+	<array>
+		<string>$(AppIdentifierPrefix)group.com.owncloud.ios-app</string>
+	</array>
+</dict>
+</plist>