Add support for KDE search completion

KDE krunner supports DBus plugins that allow search completion
comparable to the already supported gnome-shell searchprovider.

Exporting the contents of the runner directory enables us to enable
search results from within flatpack applications.

app/flatpak-builtins-build-finish.c

@@ -236,6 +236,7 @@ collect_exports (GFile          *base,
     "share/icons",                        /* Icons */
     "share/dbus-1/services",              /* D-Bus service files */
     "share/gnome-shell/search-providers", /* Search providers */
+    "share/krunner/dbusplugins",          /* KDE krunner DBus plugins */
     "share/appdata",                      /* Copy appdata/metainfo files (legacy path) */
     "share/metainfo",                     /* Copy appdata/metainfo files */
     NULL,

common/flatpak-context.c

@@ -3181,6 +3181,10 @@ flatpak_context_get_allowed_exports (FlatpakContext *context,
     {
       g_ptr_array_add (allowed_extensions, g_strdup (".ini"));
     }
+  else if (strcmp (source_path, "share/krunner/dbusplugins") == 0)
+    {
+      g_ptr_array_add (allowed_extensions, g_strdup (".desktop"));
+    }
   else if (strcmp (source_path, "share/mime/packages") == 0)
     {
       g_ptr_array_add (allowed_extensions, g_strdup (".xml"));

common/flatpak-dir.c

@@ -7604,6 +7604,15 @@ export_desktop_file (const char         *app,
       /* Add a marker so consumers can easily find out that this launches a sandbox */
       g_key_file_set_string (keyfile, G_KEY_FILE_DESKTOP_GROUP, "X-Flatpak", app);
 
+      /* Disable krunner dbusplugins by default, so that flatpak applications cannot
+       * unintentionally grab sensible search data.
+       */
+      if (g_key_file_get_boolean (keyfile, G_KEY_FILE_DESKTOP_GROUP,
+                               "X-KDE-PluginInfo-EnabledByDefault", NULL))
+        {
+          g_key_file_set_string (keyfile, G_KEY_FILE_DESKTOP_GROUP, "X-KDE-PluginInfo-EnabledByDefault", "false");
+        }
+
       /* If the app has been renamed, add its old .desktop filename to
        * X-Flatpak-RenamedFrom in the new .desktop file, taking care not to
        * introduce duplicates.
@@ -8074,6 +8083,7 @@ flatpak_export_dir (GFile        *source,
     "share/icons",                         "../..",
     "share/dbus-1/services",               "../../..",
     "share/gnome-shell/search-providers",  "../../..",
+    "share/krunner/dbusplugins",           "../../..",
     "share/mime/packages",                 "../../..",
     "share/metainfo",                      "../..",
     "bin",                                 "..",

tests/make-test-app.sh

@@ -114,6 +114,20 @@ ObjectPath=/org/test/Hello/SearchProvider
 Version=2
 EOF
 
+mkdir -p ${DIR}/files/share/krunner/dbusplugins
+cat > ${DIR}/files/share/krunner/dbusplugins/org.test.Hello.desktop <<EOF
+[Desktop Entry]
+Name=Hello
+X-KDE-ServiceTypes=Plasma/Runner
+Type=Service
+Icon=org.test.Hello
+X-KDE-ServiceTypes=Plasma/Runner
+X-KDE-PluginInfo-EnabledByDefault=true
+X-Plasma-API=DBus
+X-Plasma-DBusRunner-Service=org.test.Hello.KRunner
+X-Plasma-DBusRunner-Path=/org/test/Hello/KRunner
+EOF
+
 mkdir -p ${DIR}/files/share/icons/hicolor/64x64/apps
 cp $(dirname $0)/org.test.Hello.png ${DIR}/files/share/icons/hicolor/64x64/apps/${APP_ID}.png
 cp $(dirname $0)/org.test.Hello.png ${DIR}/files/share/icons/hicolor/64x64/apps/dont-export.png

tests/test-run.sh

@@ -50,6 +50,8 @@ assert_has_file $FL_DIR/exports/share/metainfo/org.test.Hello.cmd.appdata.xml
 assert_file_has_content $FL_DIR/exports/share/applications/org.test.Hello.desktop "^Exec=.*flatpak run --branch=stable --arch=$ARCH --command=hello\.sh org\.test\.Hello$"
 assert_has_file $FL_DIR/exports/share/gnome-shell/search-providers/org.test.Hello.search-provider.ini
 assert_file_has_content $FL_DIR/exports/share/gnome-shell/search-providers/org.test.Hello.search-provider.ini "^DefaultDisabled=true$"
+assert_has_file $FL_DIR/exports/share/krunner/dbusplugins/org.test.Hello.desktop
+assert_file_has_content $FL_DIR/exports/share/krunner/dbusplugins/org.test.Hello.desktop "^X-KDE-PluginInfo-EnabledByDefault=false$"
 assert_has_file $FL_DIR/exports/share/icons/hicolor/64x64/apps/org.test.Hello.png
 assert_not_has_file $FL_DIR/exports/share/icons/hicolor/64x64/apps/dont-export.png
 assert_has_file $FL_DIR/exports/share/icons/HighContrast/64x64/apps/org.test.Hello.png