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appinfo: Launch the OpenURI portal using a synchronous D-Bus call

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Calling the D-Bus method for the OpenURI portal "protects" the logic from
not ever having the remote method running in case the xdg-desktop-portal
process is not yet running and the caller quits quickly after the call.

This should not be a problem as the method returns immediately (regardless
of the user making a selection), but making it synchronous would prevent
situations where the OpenURI method would never be called because of D-Bus
dropping the message after the caller dies, without explicitly waiting for
a reply.

https://bugzilla.gnome.org/show_bug.cgi?id=780441
This commit is contained in:
Mario Sanchez Prada 2017-03-22 17:49:27 +00:00
parent 26e0b3dde4
commit b374cc2e23
1 changed files with 104 additions and 22 deletions
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126
gio/gappinfo.c
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@ -36,6 +36,12 @@
#include "gportalsupport.h"
#endif
#ifdef G_OS_UNIX
#define FLATPAK_OPENURI_PORTAL_BUS_NAME "org.freedesktop.portal.Desktop"
#define FLATPAK_OPENURI_PORTAL_PATH "/org/freedesktop/portal/desktop"
#define FLATPAK_OPENURI_PORTAL_IFACE "org.freedesktop.portal.OpenURI"
#define FLATPAK_OPENURI_PORTAL_METHOD "OpenURI"
#endif
/**
* SECTION:gappinfo
@ -745,6 +751,38 @@ open_uri_done (GObject *source,
g_variant_unref (res);
}
static char *
real_uri_for_portal (const char *uri,
GAppLaunchContext *context,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data,
GError **error)
{
GFile *file = NULL;
char *real_uri = NULL;
file = g_file_new_for_uri (uri);
if (g_file_is_native (file))
{
real_uri = g_document_portal_add_document (file, error);
g_object_unref (file);
if (real_uri == NULL)
{
g_task_report_error (context, callback, user_data, NULL, *error);
return NULL;
}
}
else
{
g_object_unref (file);
real_uri = g_strdup (uri);
}
return real_uri;
}
static void
launch_default_with_portal_async (const char *uri,
GAppLaunchContext *context,
@ -755,7 +793,6 @@ launch_default_with_portal_async (const char *uri,
GDBusConnection *session_bus;
GVariantBuilder opt_builder;
const char *parent_window = NULL;
GFile *file;
char *real_uri;
GTask *task;
GAsyncReadyCallback dbus_callback;
@ -771,28 +808,15 @@ launch_default_with_portal_async (const char *uri,
if (context && context->priv->envp)
parent_window = g_environ_getenv (context->priv->envp, "PARENT_WINDOW_ID");
real_uri = real_uri_for_portal (uri, context, cancellable, callback, user_data, &error);
if (real_uri == NULL)
{
g_object_unref (session_bus);
return;
}
g_variant_builder_init (&opt_builder, G_VARIANT_TYPE_VARDICT);
file = g_file_new_for_uri (uri);
if (g_file_is_native (file))
{
real_uri = g_document_portal_add_document (file, &error);
g_object_unref (file);
if (real_uri == NULL)
{
g_task_report_error (context, callback, user_data, NULL, error);
g_object_unref (session_bus);
return;
}
}
else
{
g_object_unref (file);
real_uri = g_strdup (uri);
}
if (callback)
{
task = g_task_new (context, cancellable, callback, user_data);
@ -825,12 +849,70 @@ launch_default_with_portal_async (const char *uri,
g_free (real_uri);
}
static void
launch_default_with_portal_sync (const char *uri,
GAppLaunchContext *context)
{
GDBusConnection *session_bus;
GVariantBuilder opt_builder;
GVariant *res = NULL;
const char *parent_window = NULL;
char *real_uri;
GError *error = NULL;
session_bus = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, &error);
if (session_bus == NULL)
{
g_task_report_error (context, NULL, NULL, NULL, error);
return;
}
if (context && context->priv->envp)
parent_window = g_environ_getenv (context->priv->envp, "PARENT_WINDOW_ID");
real_uri = real_uri_for_portal (uri, context, NULL, NULL, NULL, &error);
if (real_uri == NULL)
{
g_object_unref (session_bus);
return;
}
g_variant_builder_init (&opt_builder, G_VARIANT_TYPE_VARDICT);
/* Calling the D-Bus method for the OpenURI portal "protects" the logic from
* not ever having the remote method running in case the xdg-desktop-portal
* process is not yet running and the caller quits quickly after the call.
*/
res = g_dbus_connection_call_sync (session_bus,
FLATPAK_OPENURI_PORTAL_BUS_NAME,
FLATPAK_OPENURI_PORTAL_PATH,
FLATPAK_OPENURI_PORTAL_IFACE,
FLATPAK_OPENURI_PORTAL_METHOD,
g_variant_new ("(ss@a{sv})",
parent_window ? parent_window : "",
real_uri,
g_variant_builder_end (&opt_builder)),
NULL,
G_DBUS_CALL_FLAGS_NONE,
G_MAXINT,
NULL,
&error);
if (res == NULL)
g_task_report_error (context, NULL, NULL, NULL, error);
else
g_variant_unref (res);
g_dbus_connection_flush (session_bus, NULL, NULL, NULL);
g_object_unref (session_bus);
g_free (real_uri);
}
static gboolean
launch_default_with_portal (const char *uri,
GAppLaunchContext *context,
GError **error)
{
launch_default_with_portal_async (uri, context, NULL, NULL, NULL);
launch_default_with_portal_sync (uri, context);
return TRUE;
}
#endif