[gnome-software/wip/kalev/flatpak-auth-support: 2/3] Add webflow auth support to flatpak plugin

[Kalev Lember <klember src gnome org>]

commit de3afc6463aeb0e2d637a0360d1b96acffdf4e6d
Author: Kalev Lember <klember redhat com>
Date:   Tue May 19 14:28:10 2020 +0200

    Add webflow auth support to flatpak plugin
    
    This is just the minimal support, launching the auth page in the default
    web browser when libflatpak signals that we need to do the webflow auth.
    
    Possible improvements could include doing either a webkitgtk dialog, or
    maybe asking for confirmation before launching the web browser.

 plugins/flatpak/gs-plugin-flatpak.c | 69 +++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)
---
diff --git a/plugins/flatpak/gs-plugin-flatpak.c b/plugins/flatpak/gs-plugin-flatpak.c
index 2518025d..a453cec8 100644
--- a/plugins/flatpak/gs-plugin-flatpak.c
+++ b/plugins/flatpak/gs-plugin-flatpak.c
@@ -503,6 +503,71 @@ _basic_auth_start (FlatpakTransaction *transaction,
        gs_plugin_basic_auth_start (plugin, remote, realm, G_CALLBACK (_basic_auth_cb), data);
        return TRUE;
 }
+
+static gboolean
+_webflow_start (FlatpakTransaction *transaction,
+                const char *remote,
+                const char *url,
+                GVariant *options,
+                guint id,
+                GsPlugin *plugin)
+{
+       const char *browser;
+       g_autoptr(GError) error_local = NULL;
+
+       if (!gs_plugin_has_flags (plugin, GS_PLUGIN_FLAGS_INTERACTIVE))
+               return FALSE;
+
+       g_debug ("Authentication required for remote '%s'", remote);
+
+       /* Allow hard overrides with $BROWSER */
+       browser = g_getenv ("BROWSER");
+       if (browser != NULL) {
+               const char *args[3] = { NULL, url, NULL };
+               args[0] = browser;
+               if (!g_spawn_async (NULL, (char **)args, NULL, G_SPAWN_SEARCH_PATH,
+                                   NULL, NULL, NULL, &error_local)) {
+                       g_autoptr(GsPluginEvent) event = NULL;
+
+                       g_warning ("Failed to start browser %s: %s", browser, error_local->message);
+
+                       event = gs_plugin_event_new ();
+                       gs_flatpak_error_convert (&error_local);
+                       gs_plugin_event_set_error (event, error_local);
+                       gs_plugin_event_add_flag (event, GS_PLUGIN_EVENT_FLAG_WARNING);
+                       gs_plugin_report_event (plugin, event);
+
+                       return FALSE;
+               }
+       } else {
+               if (!g_app_info_launch_default_for_uri (url, NULL, &error_local)) {
+                       g_autoptr(GsPluginEvent) event = NULL;
+
+                       g_warning ("Failed to show url: %s", error_local->message);
+
+                       event = gs_plugin_event_new ();
+                       gs_flatpak_error_convert (&error_local);
+                       gs_plugin_event_set_error (event, error_local);
+                       gs_plugin_event_add_flag (event, GS_PLUGIN_EVENT_FLAG_WARNING);
+                       gs_plugin_report_event (plugin, event);
+
+                       return FALSE;
+               }
+       }
+
+       g_debug ("Waiting for browser...");
+
+       return TRUE;
+}
+
+static void
+_webflow_done (FlatpakTransaction *transaction,
+               GVariant *options,
+               guint id,
+               GsPlugin *plugin)
+{
+       g_debug ("Browser done");
+}
 #endif
 
 static FlatpakTransaction *
@@ -543,6 +608,10 @@ _build_transaction (GsPlugin *plugin, GsFlatpak *flatpak,
 #if FLATPAK_CHECK_VERSION(1,6,0)
        g_signal_connect (transaction, "basic-auth-start",
                          G_CALLBACK (_basic_auth_start), plugin);
+       g_signal_connect (transaction, "webflow-start",
+                         G_CALLBACK (_webflow_start), plugin);
+       g_signal_connect (transaction, "webflow-done",
+                         G_CALLBACK (_webflow_done), plugin);
 #endif
 
        /* use system installations as dependency sources for user installations */