Add e_mail_ui_session_check_known_address_sync().

Replaces em_utils_in_addressbook().

Foregos any address caching since any such cache would likely not be
updated properly as contacts are added and removed and would lead to
incorrect results.

An asynchronous variation of this function can be easily added at some
future date should a need arise.

2 files changed, 126 insertions, 0 deletions

diff --git a/mail/e-mail-ui-session.c b/mail/e-mail-ui-session.c
index 48c1df5bda..978e78b1bd 100644
--- a/mail/e-mail-ui-session.c
+++ b/mail/e-mail-ui-session.c
@@ -831,3 +831,122 @@ e_mail_ui_session_add_activity (EMailUISession *session,
 	g_signal_emit (session, signals[ACTIVITY_ADDED], 0, activity);
 }
 
+/**
+ * e_mail_ui_session_check_known_address_sync:
+ * @session: an #EMailUISession
+ * @addr: a #CamelInternetAddress
+ * @check_local_only: only check the builtin address book
+ * @cancellable: optional #GCancellable object, or %NULL
+ * @out_known_address: return location for the determination of
+ *                     whether @addr is a known address
+ * @error: return location for a #GError, or %NULL
+ *
+ * Determines whether @addr is a known email address by querying address
+ * books for contacts with a matching email address.  If @check_local_only
+ * is %TRUE then only the builtin address book is checked, otherwise all
+ * enabled address books are checked.
+ *
+ * The result of the query is returned through the @out_known_address
+ * boolean pointer, not through the return value.  The return value only
+ * indicates whether the address book queries were completed successfully.
+ * If an error occurred, the function sets @error and returns %FALSE.
+ *
+ * Returns: whether address books were successfully queried
+ **/
+gboolean
+e_mail_ui_session_check_known_address_sync (EMailUISession *session,
+                                            CamelInternetAddress *addr,
+                                            gboolean check_local_only,
+                                            GCancellable *cancellable,
+                                            gboolean *out_known_address,
+                                            GError **error)
+{
+	EPhotoCache *photo_cache;
+	EClientCache *client_cache;
+	ESourceRegistry *registry;
+	EBookQuery *book_query;
+	GList *list, *link;
+	const gchar *email_address = NULL;
+	gchar *book_query_string;
+	gboolean known_address = FALSE;
+	gboolean success = TRUE;
+
+	g_return_val_if_fail (E_IS_MAIL_UI_SESSION (session), FALSE);
+	g_return_val_if_fail (CAMEL_IS_INTERNET_ADDRESS (addr), FALSE);
+
+	camel_internet_address_get (addr, 0, NULL, &email_address);
+	g_return_val_if_fail (email_address != NULL, FALSE);
+
+	/* XXX EPhotoCache holds a reference on EClientCache, which
+	 *     we need.  EMailUISession should probably hold its own
+	 *     EClientCache reference, but this will do for now. */
+	photo_cache = e_mail_ui_session_get_photo_cache (session);
+	client_cache = e_photo_cache_ref_client_cache (photo_cache);
+	registry = e_client_cache_ref_registry (client_cache);
+
+	book_query = e_book_query_field_test (
+		E_CONTACT_EMAIL, E_BOOK_QUERY_IS, email_address);
+	book_query_string = e_book_query_to_string (book_query);
+	e_book_query_unref (book_query);
+
+	if (check_local_only) {
+		ESource *source;
+
+		source = e_source_registry_ref_builtin_address_book (registry);
+		list = g_list_prepend (NULL, g_object_ref (source));
+		g_object_unref (source);
+	} else {
+		list = e_source_registry_list_sources (
+			registry, E_SOURCE_EXTENSION_ADDRESS_BOOK);
+	}
+
+	for (link = list; link != NULL; link = g_list_next (link)) {
+		ESource *source = E_SOURCE (link->data);
+		EClient *client;
+		GSList *uids = NULL;
+
+		/* Skip disabled sources. */
+		if (!e_source_get_enabled (source))
+			continue;
+
+		client = e_client_cache_get_client_sync (
+			client_cache, source,
+			E_SOURCE_EXTENSION_ADDRESS_BOOK,
+			cancellable, error);
+
+		if (client == NULL) {
+			success = FALSE;
+			break;
+		}
+
+		success = e_book_client_get_contacts_uids_sync (
+			E_BOOK_CLIENT (client), book_query_string,
+			&uids, cancellable, error);
+
+		g_object_unref (client);
+
+		if (!success) {
+			g_warn_if_fail (uids == NULL);
+			break;
+		}
+
+		if (uids != NULL) {
+			g_slist_free_full (uids, (GDestroyNotify) g_free);
+			known_address = TRUE;
+			break;
+		}
+	}
+
+	g_list_free_full (list, (GDestroyNotify) g_object_unref);
+
+	g_free (book_query_string);
+
+	g_object_unref (registry);
+	g_object_unref (client_cache);
+
+	if (success && out_known_address != NULL)
+		*out_known_address = known_address;
+
+	return success;
+}
+
diff --git a/mail/e-mail-ui-session.h b/mail/e-mail-ui-session.h
index c199a7b334..9950219728 100644
--- a/mail/e-mail-ui-session.h
+++ b/mail/e-mail-ui-session.h
@@ -97,6 +97,13 @@ CamelCertTrust	e_mail_ui_session_trust_prompt	(CamelSession *session,
 						 guint32 certificate_errors,
 						 GList *issuers,
 						 GCancellable *cancellable);
+gboolean	e_mail_ui_session_check_known_address_sync
+						(EMailUISession *session,
+						 CamelInternetAddress *addr,
+						 gboolean check_local_only,
+						 GCancellable *cancellable,
+						 gboolean *out_known_address,
+						 GError **error);
 
 G_END_DECLS