[evolution-data-server/account-mgmt: 16/40] Adapt address book backends to the new ESource API.

[Matthew Barnes <mbarnes src gnome org>]

commit cea302beb37b6a551a18eae66addff516283e3bd
Author: Matthew Barnes <mbarnes redhat com>
Date:   Fri Nov 12 17:46:14 2010 -0500

    Adapt address book backends to the new ESource API.

 addressbook/backends/file/e-book-backend-file.c    |   53 ++---
 .../backends/google/e-book-backend-google.c        |  260 ++++++++++----------
 .../backends/webdav/e-book-backend-webdav.c        |  236 +++++++++---------
 3 files changed, 277 insertions(+), 272 deletions(-)
---
diff --git a/addressbook/backends/file/e-book-backend-file.c b/addressbook/backends/file/e-book-backend-file.c
index 824e65f..28539bb 100644
--- a/addressbook/backends/file/e-book-backend-file.c
+++ b/addressbook/backends/file/e-book-backend-file.c
@@ -327,32 +327,35 @@ e_book_backend_file_extract_path_from_source (ESource *source,
                                               GetPathType path_type)
 {
 	const gchar *user_data_dir;
-	const gchar *source_dir;
-	gchar *mangled_source_dir;
+	const gchar *uid;
 	gchar *filename = NULL;
 
-	user_data_dir = e_get_user_data_dir ();
-	source_dir = e_source_peek_relative_uri (source);
+	uid = e_source_get_uid (source);
+	g_return_val_if_fail (uid != NULL, NULL);
 
-	if (!source_dir || !g_str_equal (source_dir, "system"))
-		source_dir = e_source_peek_uid (source);
+	user_data_dir = e_get_user_data_dir ();
 
-	/* Mangle the URI to not contain invalid characters. */
-	mangled_source_dir = g_strdelimit (g_strdup (source_dir), ":/", '_');
+	/* XXX Backward-compatibility hack:
+	 *
+	 * The special built-in "Personal" data source UIDs are now named
+	 * "system-$COMPONENT" but since the data directories are already
+	 * split out by component, we'll continue to use the old "system"
+	 * directories for these particular data sources. */
+	if (g_strcmp0 (uid, E_SOURCE_BUILTIN_ADDRESS_BOOK_UID) == 0)
+		uid = "system";
 
 	switch (path_type) {
-	case GET_PATH_DB_DIR:
-		filename = g_build_filename
-			(user_data_dir, "addressbook", mangled_source_dir, NULL);
-		break;
-	case GET_PATH_PHOTO_DIR:
-		filename = g_build_filename
-			(user_data_dir, "addressbook", mangled_source_dir, "photos", NULL);
-		break;
-	default:
-		break;
+		case GET_PATH_DB_DIR:
+			filename = g_build_filename (
+				user_data_dir, "addressbook", uid, NULL);
+			break;
+		case GET_PATH_PHOTO_DIR:
+			filename = g_build_filename (
+				user_data_dir, "addressbook", uid, "photos", NULL);
+			break;
+		default:
+			g_warn_if_reached ();
 	}
-	g_free (mangled_source_dir);
 
 	return filename;
 }
@@ -1701,15 +1704,6 @@ e_book_backend_file_stop_book_view (EBookBackend *backend,
 		g_thread_join (closure->thread);
 }
 
-static void
-e_book_backend_file_authenticate_user (EBookBackendSync *backend,
-                                       GCancellable *cancellable,
-                                       ECredentials *credentials,
-                                       GError **perror)
-{
-	/* Success */
-}
-
 /*
 ** versions:
 **
@@ -2202,7 +2196,7 @@ e_book_backend_file_remove (EBookBackendSync *backend,
 		while ((name = g_dir_read_name (dir))) {
 			if (select_changes (name)) {
 				gchar *full_path = g_build_filename (bf->priv->dirname, name, NULL);
-				if (-1 == g_unlink (full_path)) {
+				if (g_unlink (full_path) == -1) {
 					g_warning ("failed to remove change db `%s': %s", full_path, g_strerror (errno));
 				}
 				g_free (full_path);
@@ -2467,7 +2461,6 @@ e_book_backend_file_class_init (EBookBackendFileClass *class)
 	sync_class->get_contact_sync		= e_book_backend_file_get_contact;
 	sync_class->get_contact_list_sync	= e_book_backend_file_get_contact_list;
 	sync_class->get_contact_list_uids_sync	= e_book_backend_file_get_contact_list_uids;
-	sync_class->authenticate_user_sync	= e_book_backend_file_authenticate_user;
 
 	object_class->dispose = e_book_backend_file_dispose;
 	object_class->finalize = e_book_backend_file_finalize;
diff --git a/addressbook/backends/google/e-book-backend-google.c b/addressbook/backends/google/e-book-backend-google.c
index b8e80fc..9d69e92 100644
--- a/addressbook/backends/google/e-book-backend-google.c
+++ b/addressbook/backends/google/e-book-backend-google.c
@@ -27,7 +27,11 @@
 
 #include <glib/gi18n-lib.h>
 #include <libedataserver/e-proxy.h>
-#include <libebook/e-vcard.h>
+#include <libedataserver/e-source-authentication.h>
+#include <libedataserver/e-source-authenticator.h>
+#include <libedataserver/e-source-offline.h>
+#include <libedataserver/e-source-refresh.h>
+#include <libedataserver/e-source-security.h>
 #include <libebook/e-contact.h>
 #include <libedata-book/e-data-book.h>
 #include <libedata-book/e-data-book-view.h>
@@ -63,7 +67,17 @@
 #define EDB_ERROR(_code) e_data_book_create_error (E_DATA_BOOK_STATUS_ ## _code, NULL)
 #define EDB_ERROR_EX(_code, _msg) e_data_book_create_error (E_DATA_BOOK_STATUS_ ## _code, _msg)
 
-G_DEFINE_TYPE (EBookBackendGoogle, e_book_backend_google, E_TYPE_BOOK_BACKEND)
+/* Forward Declarations */
+static void	e_book_backend_google_source_authenticator_init
+				(ESourceAuthenticatorInterface *interface);
+
+G_DEFINE_TYPE_WITH_CODE (
+	EBookBackendGoogle,
+	e_book_backend_google,
+	E_TYPE_BOOK_BACKEND,
+	G_IMPLEMENT_INTERFACE (
+		E_TYPE_SOURCE_AUTHENTICATOR,
+		e_book_backend_google_source_authenticator_init))
 
 typedef enum {
 	NO_CACHE,
@@ -1229,12 +1243,18 @@ proxy_settings_changed (EProxy *proxy,
 	g_free (uri);
 }
 
-static void
-request_authorization (EBookBackend *backend)
+static gboolean
+request_authorization (EBookBackend *backend,
+                       GCancellable *cancellable,
+                       GError **error)
 {
 	EBookBackendGooglePrivate *priv;
+	ESourceRegistry *registry;
+	ESource *source;
 
 	priv = E_BOOK_BACKEND_GOOGLE_GET_PRIVATE (backend);
+	source = e_backend_get_source (E_BACKEND (backend));
+	registry = e_backend_get_registry (E_BACKEND (backend));
 
 	/* Make sure we have the GDataService configured
 	 * before requesting authorization. */
@@ -1275,13 +1295,15 @@ request_authorization (EBookBackend *backend)
 #ifdef HAVE_GOA
 	/* If we're using OAuth tokens, then as far as the backend
 	 * is concerned it's always authorized.  The GDataAuthorizer
-	 * will take care of everything in the background without
-	 * bothering clients with "auth-required" signals. */
+	 * will take care of everything in the background. */
 	if (E_IS_GDATA_GOA_AUTHORIZER (priv->authorizer))
-		return;
+		return TRUE;
 #endif
 
-	e_book_backend_notify_auth_required (backend, TRUE, NULL);
+	/* Otherwise it's up to us to obtain a login secret. */
+	return e_source_registry_authenticate_sync (
+		registry, source, E_SOURCE_AUTHENTICATOR (backend),
+		cancellable, error);
 }
 
 typedef struct {
@@ -2104,6 +2126,7 @@ e_book_backend_google_start_book_view (EBookBackend *backend,
 {
 	EBookBackendGooglePrivate *priv;
 	GList *cached_contacts;
+	GError *error = NULL;
 
 	g_return_if_fail (E_IS_BOOK_BACKEND_GOOGLE (backend));
 	g_return_if_fail (E_IS_DATA_BOOK_VIEW (bookview));
@@ -2122,9 +2145,11 @@ e_book_backend_google_start_book_view (EBookBackend *backend,
 
 	/* Update the cache if necessary */
 	if (cache_needs_update (backend, NULL)) {
+		/* XXX We ought to be authorized by now, I would think.
+		 *     Not sure when we wouldn't be or how to handle it. */
 		if (!backend_is_authorized (backend)) {
-			/* We need authorization first */
-			request_authorization (backend);
+			error = EDB_ERROR (AUTHENTICATION_REQUIRED);
+			goto exit;
 		} else {
 			/* Update in an idle function, so that this call doesn't block */
 			priv->idle_id = g_idle_add ((GSourceFunc) on_refresh_idle, backend);
@@ -2142,7 +2167,9 @@ e_book_backend_google_start_book_view (EBookBackend *backend,
 		g_object_unref (contact);
 	}
 
-	e_data_book_view_notify_complete (bookview, NULL /* Success */);
+exit:
+	/* This function frees the GError passed to it. */
+	e_data_book_view_notify_complete (bookview, error);
 }
 
 static void
@@ -2167,96 +2194,6 @@ e_book_backend_google_stop_book_view (EBookBackend *backend,
 		set_live_mode (backend, FALSE);
 }
 
-typedef struct {
-	EBookBackend *backend;
-	guint32 opid;
-} AuthenticateUserData;
-
-static void
-authenticate_client_login_cb (GDataClientLoginAuthorizer *authorizer,
-                              GAsyncResult *result,
-                              AuthenticateUserData *data)
-{
-	GError *gdata_error = NULL;
-	GError *book_error = NULL;
-
-	__debug__ (G_STRFUNC);
-
-	/* Finish authenticating */
-	gdata_client_login_authorizer_authenticate_finish (
-		authorizer, result, &gdata_error);
-
-	if (gdata_error != NULL) {
-		data_book_error_from_gdata_error (&book_error, gdata_error);
-		__debug__ ("Authentication failed: %s", gdata_error->message);
-	}
-
-	finish_operation (data->backend, data->opid, gdata_error);
-	e_book_backend_notify_readonly (data->backend, gdata_error != NULL);
-	e_book_backend_notify_opened (data->backend, book_error);
-
-	g_object_unref (data->backend);
-	g_slice_free (AuthenticateUserData, data);
-
-	g_clear_error (&gdata_error);
-}
-
-static void
-e_book_backend_google_authenticate_user (EBookBackend *backend,
-                                         GCancellable *cancellable,
-                                         ECredentials *credentials)
-{
-	EBookBackendGooglePrivate *priv;
-	AuthenticateUserData *data;
-	guint32 opid;
-
-	priv = E_BOOK_BACKEND_GOOGLE_GET_PRIVATE (backend);
-
-	__debug__ (G_STRFUNC);
-
-	if (!e_backend_get_online (E_BACKEND (backend))) {
-		e_book_backend_notify_readonly (backend, TRUE);
-		e_book_backend_notify_online (backend, FALSE);
-		e_book_backend_notify_opened (backend, EDB_ERROR (SUCCESS));
-		return;
-	}
-
-	if (backend_is_authorized (backend)) {
-		g_warning ("Connection to Google already established.");
-		e_book_backend_notify_readonly (backend, FALSE);
-		e_book_backend_notify_opened (backend, NULL);
-		return;
-	}
-
-	if (!credentials || !e_credentials_has_key (credentials, E_CREDENTIALS_KEY_USERNAME) || !e_credentials_has_key (credentials, E_CREDENTIALS_KEY_PASSWORD)) {
-		e_book_backend_notify_opened (backend, EDB_ERROR (AUTHENTICATION_REQUIRED));
-		return;
-	}
-
-	opid = -1;
-	while (g_hash_table_lookup (priv->cancellables, GUINT_TO_POINTER (opid)))
-		opid--;
-
-	/* Authenticate with the server asynchronously */
-	data = g_slice_new (AuthenticateUserData);
-	data->backend = g_object_ref (backend);
-	data->opid = opid;
-
-	cancellable = start_operation (
-		backend, opid, cancellable,
-		_("Authenticating with the serverâ"));
-
-	gdata_client_login_authorizer_authenticate_async (
-		GDATA_CLIENT_LOGIN_AUTHORIZER (priv->authorizer),
-		e_credentials_peek (credentials, E_CREDENTIALS_KEY_USERNAME),
-		e_credentials_peek (credentials, E_CREDENTIALS_KEY_PASSWORD),
-		cancellable,
-		(GAsyncReadyCallback) authenticate_client_login_cb,
-		data);
-
-	g_object_unref (cancellable);
-}
-
 static void
 e_book_backend_google_remove (EBookBackend *backend,
                               EDataBook *book,
@@ -2275,11 +2212,15 @@ e_book_backend_google_open (EBookBackend *backend,
                             gboolean only_if_exists)
 {
 	EBookBackendGooglePrivate *priv;
-	const gchar *refresh_interval_str, *use_ssl_str, *use_cache_str;
-	guint refresh_interval;
-	gboolean use_ssl, use_cache;
+	ESourceOffline *offline_extension;
+	ESourceRefresh *refresh_extension;
+	ESourceSecurity *security_extension;
 	ESource *source;
+	guint interval_in_minutes;
+	gboolean use_ssl, use_cache;
+	const gchar *extension_name;
 	gboolean is_online;
+	GError *error = NULL;
 
 	priv = E_BOOK_BACKEND_GOOGLE_GET_PRIVATE (backend);
 
@@ -2292,24 +2233,22 @@ e_book_backend_google_open (EBookBackend *backend,
 
 	source = e_backend_get_source (E_BACKEND (backend));
 
-	/* Parse various other properties */
-	refresh_interval_str = e_source_get_property (source, "refresh-interval");
-	use_ssl_str = e_source_get_property (source, "ssl");
-	use_cache_str = e_source_get_property (source, "offline_sync");
+	extension_name = E_SOURCE_EXTENSION_OFFLINE;
+	offline_extension = e_source_get_extension (source, extension_name);
 
-	refresh_interval = 3600;
-	if (refresh_interval_str && sscanf (refresh_interval_str, "%u", &refresh_interval) != 1) {
-		g_warning ("Could not parse refresh-interval!");
-		refresh_interval = 3600;
-	}
+	extension_name = E_SOURCE_EXTENSION_REFRESH;
+	refresh_extension = e_source_get_extension (source, extension_name);
+
+	extension_name = E_SOURCE_EXTENSION_SECURITY;
+	security_extension = e_source_get_extension (source, extension_name);
+
+	interval_in_minutes =
+		e_source_refresh_get_enabled (refresh_extension) ?
+		e_source_refresh_get_interval_minutes (refresh_extension) : 0;
 
-	use_ssl = TRUE;
-	if (use_ssl_str && (g_ascii_strcasecmp (use_ssl_str, "false") == 0 || strcmp (use_ssl_str, "0") == 0))
-		use_ssl = FALSE;
+	use_ssl = e_source_security_get_secure (security_extension);
 
-	use_cache = TRUE;
-	if (use_cache_str && (g_ascii_strcasecmp (use_cache_str, "false") == 0 || strcmp (use_cache_str, "0") == 0))
-		use_cache = FALSE;
+	use_cache = e_source_offline_get_stay_synchronized (offline_extension);
 
 	/* Set up our object */
 	if (!priv->cancellables) {
@@ -2321,10 +2260,10 @@ e_book_backend_google_open (EBookBackend *backend,
 
 	cache_init (backend, use_cache);
 	priv->use_ssl = use_ssl;
-	priv->refresh_interval = refresh_interval;
+	priv->refresh_interval = interval_in_minutes * 60;
 
 	/* Remove and re-add the timeout */
-	if (priv->refresh_id != 0) {
+	if (priv->refresh_id != 0 && priv->refresh_interval > 0) {
 		g_source_remove (priv->refresh_id);
 		priv->refresh_id = g_timeout_add_seconds (priv->refresh_interval, (GSourceFunc) on_refresh_timeout, backend);
 	}
@@ -2335,11 +2274,11 @@ e_book_backend_google_open (EBookBackend *backend,
 	e_book_backend_notify_readonly (backend, TRUE);
 
 	if (is_online) {
-		request_authorization (backend);
-
-		/* Refresh the authorizer.  This may block. */
-		gdata_authorizer_refresh_authorization (
-			priv->authorizer, cancellable, NULL);
+		if (request_authorization (backend, cancellable, &error)) {
+			/* Refresh the authorizer.  This may block. */
+			gdata_authorizer_refresh_authorization (
+				priv->authorizer, cancellable, &error);
+		}
 	}
 
 	if (!is_online || backend_is_authorized (backend)) {
@@ -2348,7 +2287,8 @@ e_book_backend_google_open (EBookBackend *backend,
 		e_book_backend_notify_opened (backend, NULL /* Success */);
 	}
 
-	e_data_book_respond_open (book, opid, NULL /* Success */);
+	/* This function frees the GError passed to it. */
+	e_data_book_respond_open (book, opid, error);
 }
 
 static void
@@ -2550,7 +2490,7 @@ e_book_backend_google_notify_online_cb (EBookBackend *backend,
 	e_book_backend_notify_online (backend, is_online);
 
 	if (is_online && e_book_backend_is_opened (backend)) {
-		request_authorization (backend);
+		request_authorization (backend, NULL, NULL);
 		if (backend_is_authorized (backend))
 			e_book_backend_notify_readonly (backend, FALSE);
 	} else {
@@ -2626,6 +2566,63 @@ e_book_backend_google_finalize (GObject *object)
 	G_OBJECT_CLASS (e_book_backend_google_parent_class)->finalize (object);
 }
 
+static ESourceAuthenticationResult
+book_backend_google_try_password_sync (ESourceAuthenticator *authenticator,
+                                       const GString *password,
+                                       GCancellable *cancellable,
+                                       GError **error)
+{
+	EBookBackendGooglePrivate *priv;
+	ESourceAuthentication *auth_extension;
+	ESourceAuthenticationResult result;
+	ESource *source;
+	const gchar *extension_name;
+	gchar *user;
+	GError *local_error = NULL;
+
+	__debug__ (G_STRFUNC);
+
+	/* We should not have gotten here if we're offline. */
+	g_return_val_if_fail (
+		e_backend_get_online (E_BACKEND (authenticator)),
+		E_SOURCE_AUTHENTICATION_ERROR);
+
+	/* Nor should we have gotten here if we're already authorized. */
+	g_return_val_if_fail (
+		!backend_is_authorized (E_BOOK_BACKEND (authenticator)),
+		E_SOURCE_AUTHENTICATION_ERROR);
+
+	priv = E_BOOK_BACKEND_GOOGLE (authenticator)->priv;
+
+	source = e_backend_get_source (E_BACKEND (authenticator));
+	extension_name = E_SOURCE_EXTENSION_AUTHENTICATION;
+	auth_extension = e_source_get_extension (source, extension_name);
+	user = e_source_authentication_dup_user (auth_extension);
+
+	gdata_client_login_authorizer_authenticate (
+		GDATA_CLIENT_LOGIN_AUTHORIZER (priv->authorizer),
+		user, password->str, cancellable, &local_error);
+
+	g_free (user);
+
+	if (local_error == NULL) {
+		result = E_SOURCE_AUTHENTICATION_ACCEPTED;
+
+	} else if (g_error_matches (
+		local_error, GDATA_CLIENT_LOGIN_AUTHORIZER_ERROR,
+		GDATA_CLIENT_LOGIN_AUTHORIZER_ERROR_BAD_AUTHENTICATION)) {
+
+		g_clear_error (&local_error);
+		result = E_SOURCE_AUTHENTICATION_REJECTED;
+
+	} else {
+		g_propagate_error (error, local_error);
+		result = E_SOURCE_AUTHENTICATION_ERROR;
+	}
+
+	return result;
+}
+
 static void
 e_book_backend_google_class_init (EBookBackendGoogleClass *class)
 {
@@ -2646,7 +2643,6 @@ e_book_backend_google_class_init (EBookBackendGoogleClass *class)
 	backend_class->get_contact		= e_book_backend_google_get_contact;
 	backend_class->get_contact_list		= e_book_backend_google_get_contact_list;
 	backend_class->get_contact_list_uids	= e_book_backend_google_get_contact_list_uids;
-	backend_class->authenticate_user	= e_book_backend_google_authenticate_user;
 
 	object_class->dispose  = e_book_backend_google_dispose;
 	object_class->finalize = e_book_backend_google_finalize;
@@ -2655,6 +2651,12 @@ e_book_backend_google_class_init (EBookBackendGoogleClass *class)
 }
 
 static void
+e_book_backend_google_source_authenticator_init (ESourceAuthenticatorInterface *interface)
+{
+	interface->try_password_sync = book_backend_google_try_password_sync;
+}
+
+static void
 e_book_backend_google_init (EBookBackendGoogle *backend)
 {
 	__debug__ (G_STRFUNC);
diff --git a/addressbook/backends/webdav/e-book-backend-webdav.c b/addressbook/backends/webdav/e-book-backend-webdav.c
index 8ae2ca8..800752b 100644
--- a/addressbook/backends/webdav/e-book-backend-webdav.c
+++ b/addressbook/backends/webdav/e-book-backend-webdav.c
@@ -35,6 +35,9 @@
 #include <libedataserver/e-url.h>
 #include <libedataserver/e-flag.h>
 #include <libedataserver/e-proxy.h>
+#include <libedataserver/e-source-authentication.h>
+#include <libedataserver/e-source-offline.h>
+#include <libedataserver/e-source-webdav.h>
 #include <libebook/e-contact.h>
 #include <libebook/e-address-western.h>
 
@@ -63,7 +66,17 @@
 #define WEBDAV_CLOSURE_NAME   "EBookBackendWebdav.BookView::closure"
 #define WEBDAV_CTAG_KEY "WEBDAV_CTAG"
 
-G_DEFINE_TYPE (EBookBackendWebdav, e_book_backend_webdav, E_TYPE_BOOK_BACKEND)
+/* Forward Declarations */
+static void	e_book_backend_webdav_source_authenticator_init
+				(ESourceAuthenticatorInterface *interface);
+
+G_DEFINE_TYPE_WITH_CODE (
+	EBookBackendWebdav,
+	e_book_backend_webdav,
+	E_TYPE_BOOK_BACKEND,
+	G_IMPLEMENT_INTERFACE (
+		E_TYPE_SOURCE_AUTHENTICATOR,
+		e_book_backend_webdav_source_authenticator_init))
 
 struct _EBookBackendWebdavPrivate {
 	gboolean           marked_for_offline;
@@ -193,14 +206,20 @@ upload_contact (EBookBackendWebdav *webdav,
                 gchar **reason)
 {
 	ESource     *source;
+	ESourceWebdav *webdav_extension;
 	SoupMessage *message;
 	gchar       *uri;
 	gchar       *etag;
 	const gchar  *new_etag, *redir_uri;
 	gchar        *request;
 	guint        status;
-	const gchar  *property;
 	gboolean     avoid_ifmatch;
+	const gchar *extension_name;
+
+	source = e_backend_get_source (E_BACKEND (webdav));
+
+	extension_name = E_SOURCE_EXTENSION_WEBDAV_BACKEND;
+	webdav_extension = e_source_get_extension (source, extension_name);
 
 	source = e_backend_get_source (E_BACKEND (webdav));
 
@@ -214,12 +233,7 @@ upload_contact (EBookBackendWebdav *webdav,
 	soup_message_headers_append (message->request_headers, "User-Agent", USERAGENT);
 	soup_message_headers_append (message->request_headers, "Connection", "close");
 
-	property = e_source_get_property(source, "avoid_ifmatch");
-	if (property != NULL && strcmp(property, "1") == 0) {
-		avoid_ifmatch = TRUE;
-	} else {
-		avoid_ifmatch = FALSE;
-	}
+	avoid_ifmatch = e_source_webdav_get_avoid_ifmatch (webdav_extension);
 
 	/* some servers (like apache < 2.2.8) don't handle If-Match, correctly so
 	 * we can leave it out */
@@ -293,7 +307,7 @@ webdav_handle_auth_request (EBookBackendWebdav *webdav)
 	if (priv->username != NULL) {
 		g_free (priv->username);
 		priv->username = NULL;
-		e_credentials_util_safe_free_string (priv->password);
+		g_free (priv->password);
 		priv->password = NULL;
 
 		return EDB_ERROR (AUTHENTICATION_FAILED);
@@ -1197,40 +1211,13 @@ e_book_backend_webdav_get_contact_list_uids (EBookBackend *backend,
 	g_slist_free (uids_list);
 }
 
-static void
-e_book_backend_webdav_authenticate_user (EBookBackend *backend,
-                                         GCancellable *cancellable,
-                                         ECredentials *credentials)
-{
-	EBookBackendWebdav        *webdav = E_BOOK_BACKEND_WEBDAV (backend);
-	EBookBackendWebdavPrivate *priv   = webdav->priv;
-	SoupMessage               *message;
-	guint                      status;
-
-	priv->username = e_credentials_get (credentials, E_CREDENTIALS_KEY_USERNAME);
-	priv->password = e_credentials_get (credentials, E_CREDENTIALS_KEY_PASSWORD);
-
-	/* Evolution API requires a direct feedback on the authentication,
-	 * so we send a PROPFIND to test wether user/password is correct */
-	message = send_propfind (webdav);
-	status  = message->status_code;
-	g_object_unref (message);
-
-	if (status == 401 || status == 407) {
-		g_free (priv->username);
-		priv->username = NULL;
-		e_credentials_util_safe_free_string (priv->password);
-		priv->password = NULL;
-
-		e_book_backend_notify_opened (backend, EDB_ERROR (AUTHENTICATION_FAILED));
-	} else {
-		e_book_backend_notify_opened (backend, EDB_ERROR (SUCCESS));
-	}
-}
-
 /** authentication callback for libsoup */
-static void soup_authenticate (SoupSession *session, SoupMessage *message,
-                              SoupAuth *auth, gboolean retrying, gpointer data)
+static void
+soup_authenticate (SoupSession *session,
+                   SoupMessage *message,
+                   SoupAuth *auth,
+                   gboolean retrying,
+                   gpointer data)
 {
 	EBookBackendWebdav        *webdav = data;
 	EBookBackendWebdavPrivate *priv   = webdav->priv;
@@ -1270,86 +1257,44 @@ e_book_backend_webdav_open (EBookBackend *backend,
 {
 	EBookBackendWebdav        *webdav = E_BOOK_BACKEND_WEBDAV (backend);
 	EBookBackendWebdavPrivate *priv   = webdav->priv;
-	ESource			  *source;
-	gchar                     *uri;
+	ESourceAuthentication     *auth_extension;
+	ESourceOffline            *offline_extension;
+	ESourceWebdav             *webdav_extension;
+	ESourceRegistry           *registry;
+	ESource                   *source;
+	const gchar               *extension_name;
 	const gchar               *cache_dir;
-	const gchar               *offline;
-	const gchar               *use_ssl;
 	gchar                     *filename;
 	SoupSession               *session;
 	SoupURI                   *suri;
-	gint			   port;
+	GError                    *error = NULL;
 
 	/* will try fetch ctag for the first time, if it fails then sets this to FALSE */
 	priv->supports_getctag = TRUE;
 
+	registry = e_backend_get_registry (E_BACKEND (backend));
+
 	source = e_backend_get_source (E_BACKEND (backend));
 	cache_dir = e_book_backend_get_cache_dir (backend);
 
-	uri = e_source_get_uri (source);
-	if (uri == NULL) {
-		e_book_backend_respond_opened (backend, book, opid, EDB_ERROR_EX (OTHER_ERROR, "No uri given for addressbook"));
-		return;
-	}
+	extension_name = E_SOURCE_EXTENSION_AUTHENTICATION;
+	auth_extension = e_source_get_extension (source, extension_name);
 
-	suri = soup_uri_new (uri);
-	g_free (uri);
+	extension_name = E_SOURCE_EXTENSION_OFFLINE;
+	offline_extension = e_source_get_extension (source, extension_name);
 
-	if (!suri) {
-		e_book_backend_respond_opened (backend, book, opid, EDB_ERROR_EX (OTHER_ERROR, "Invalid uri given for addressbook"));
-		return;
-	}
+	extension_name = E_SOURCE_EXTENSION_WEBDAV_BACKEND;
+	webdav_extension = e_source_get_extension (source, extension_name);
 
-	offline = e_source_get_property(source, "offline_sync");
-	if (offline && g_str_equal(offline, "1"))
-		priv->marked_for_offline = TRUE;
+	priv->marked_for_offline =
+		e_source_offline_get_stay_synchronized (offline_extension);
 
 	if (!e_backend_get_online (E_BACKEND (backend)) && !priv->marked_for_offline ) {
-		soup_uri_free (suri);
 		e_book_backend_respond_opened (backend, book, opid, EDB_ERROR (OFFLINE_UNAVAILABLE));
 		return;
 	}
 
-	if (!suri->scheme || !g_str_equal (suri->scheme, "webdav")) {
-		/* the book is not for us */
-		soup_uri_free (suri);
-		e_book_backend_respond_opened (backend, book, opid, EDB_ERROR_EX (OTHER_ERROR, "Not a webdav uri"));
-		return;
-	}
-
-	port = soup_uri_get_port (suri);
-	use_ssl = e_source_get_property (source, "use_ssl");
-	if (use_ssl != NULL && strcmp (use_ssl, "1") == 0) {
-		soup_uri_set_scheme (suri, "https");
-	} else {
-		soup_uri_set_scheme (suri, "http");
-	}
-
-	if (port > 0 && port != soup_uri_get_port (suri))
-		soup_uri_set_port (suri, port);
-
-	/* append slash if missing */
-	if (!suri->path || !*suri->path || suri->path[strlen (suri->path) - 1] != '/') {
-		gchar *new_path = g_strconcat (suri->path ? suri->path : "", "/", NULL);
-		soup_uri_set_path (suri, new_path);
-		g_free (new_path);
-	}
-
-	if (suri->host && strchr (suri->host, '@')) {
-		gchar *at = strchr (suri->host, '@');
-		gchar *new_user;
-
-		*at = '\0';
-
-		new_user = g_strconcat (suri->user ? suri->user : "", "@", suri->host, NULL);
-
-		*at = '@';
-
-		soup_uri_set_host (suri, at + 1);
-		soup_uri_set_user (suri, new_user);
-
-		g_free (new_user);
-	}
+	suri = e_source_webdav_dup_soup_uri (webdav_extension);
 
 	priv->uri = soup_uri_to_string (suri, FALSE);
 	if (!priv->uri) {
@@ -1363,23 +1308,32 @@ e_book_backend_webdav_open (EBookBackend *backend,
 	g_free (filename);
 
 	session = soup_session_sync_new ();
-	g_signal_connect(session, "authenticate", G_CALLBACK(soup_authenticate),
-			 webdav);
+	g_signal_connect (
+		session, "authenticate",
+		G_CALLBACK (soup_authenticate), webdav);
 
 	priv->session = session;
 	priv->proxy = e_proxy_new ();
 	e_proxy_setup_proxy (priv->proxy);
-	g_signal_connect (priv->proxy, "changed", G_CALLBACK (proxy_settings_changed), priv);
+	g_signal_connect (
+		priv->proxy, "changed",
+		G_CALLBACK (proxy_settings_changed), priv);
 	proxy_settings_changed (priv->proxy, priv);
 	webdav_debug_setup (priv->session);
 
-	e_book_backend_notify_auth_required (backend, TRUE, NULL);
 	e_book_backend_notify_online (backend, TRUE);
 	e_book_backend_notify_readonly (backend, FALSE);
 
+	if (e_source_authentication_required (auth_extension))
+		e_source_registry_authenticate_sync (
+			registry, source,
+			E_SOURCE_AUTHENTICATOR (backend),
+			cancellable, &error);
+
 	soup_uri_free (suri);
 
-	e_data_book_respond_open (book, opid, NULL /* Success */);
+	/* This function frees the GError passed to it. */
+	e_data_book_respond_open (book, opid, error);
 }
 
 static void
@@ -1451,21 +1405,72 @@ e_book_backend_webdav_dispose (GObject *object)
 	EBookBackendWebdavPrivate *priv   = webdav->priv;
 
 	#define do_unref(x) { if (x) g_object_unref (x); x = NULL; }
-	#define do_free(x) { if (x) g_free (x); x = NULL; }
 
 	do_unref (priv->session);
 	do_unref (priv->proxy);
 	do_unref (priv->cache);
-	do_free (priv->uri);
-	do_free (priv->username);
-	if (priv->password) { e_credentials_util_safe_free_string (priv->password); priv->password = NULL; }
+
+	g_free (priv->uri);
+	g_free (priv->username);
+	g_free (priv->password);
 
 	#undef do_unref
-	#undef do_free
 
 	G_OBJECT_CLASS (e_book_backend_webdav_parent_class)->dispose (object);
 }
 
+static ESourceAuthenticationResult
+book_backend_webdav_try_password_sync (ESourceAuthenticator *authenticator,
+                                       const GString *password,
+                                       GCancellable *cancellable,
+                                       GError **error)
+{
+	EBookBackendWebdav *webdav = E_BOOK_BACKEND_WEBDAV (authenticator);
+	ESourceAuthentication *auth_extension;
+	ESourceAuthenticationResult result;
+	ESource *source;
+	SoupMessage *message;
+	const gchar *extension_name;
+
+	source = e_backend_get_source (E_BACKEND (authenticator));
+	extension_name = E_SOURCE_EXTENSION_AUTHENTICATION;
+	auth_extension = e_source_get_extension (source, extension_name);
+
+	webdav->priv->username =
+		e_source_authentication_dup_user (auth_extension);
+	webdav->priv->password = g_strdup (password->str);
+
+	/* Send a PROPFIND to test whether user/password is correct. */
+	message = send_propfind (webdav);
+
+	switch (message->status_code) {
+		case SOUP_STATUS_OK:
+			result = E_SOURCE_AUTHENTICATION_ACCEPTED;
+			break;
+
+		case SOUP_STATUS_UNAUTHORIZED:
+		case SOUP_STATUS_PROXY_UNAUTHORIZED:  /* XXX really? */
+			g_free (webdav->priv->username);
+			webdav->priv->username = NULL;
+			g_free (webdav->priv->password);
+			webdav->priv->password = NULL;
+			result = E_SOURCE_AUTHENTICATION_REJECTED;
+			break;
+
+		default:
+			g_set_error (
+				error, SOUP_HTTP_ERROR,
+				message->status_code,
+				"%s", message->reason_phrase);
+			result = E_SOURCE_AUTHENTICATION_ERROR;
+			break;
+	}
+
+	g_object_unref (message);
+
+	return result;
+}
+
 static void
 e_book_backend_webdav_class_init (EBookBackendWebdavClass *class)
 {
@@ -1488,13 +1493,18 @@ e_book_backend_webdav_class_init (EBookBackendWebdavClass *class)
 	backend_class->get_contact_list_uids	= e_book_backend_webdav_get_contact_list_uids;
 	backend_class->start_book_view		= e_book_backend_webdav_start_book_view;
 	backend_class->stop_book_view		= e_book_backend_webdav_stop_book_view;
-	backend_class->authenticate_user	= e_book_backend_webdav_authenticate_user;
 	backend_class->remove			= e_book_backend_webdav_remove;
 
 	object_class->dispose			= e_book_backend_webdav_dispose;
 }
 
 static void
+e_book_backend_webdav_source_authenticator_init (ESourceAuthenticatorInterface *interface)
+{
+	interface->try_password_sync = book_backend_webdav_try_password_sync;
+}
+
+static void
 e_book_backend_webdav_init (EBookBackendWebdav *backend)
 {
 	backend->priv = E_BOOK_BACKEND_WEBDAV_GET_PRIVATE (backend);