[libgdata] freebase: Pass API key as a GET variable

[Carlos Garnacho <carlosg src gnome org>]

commit 540e624309b030af0e33ff1e43e278f9abcf4087
Author: Carlos Garnacho <carlosg gnome org>
Date:   Tue Jan 6 18:26:21 2015 +0100

    freebase: Pass API key as a GET variable
    
    This needs including on every freebase request if a developer key is set
    by the caller.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=742472

 gdata/services/freebase/gdata-freebase-service.c |   34 ++++++++++++++++++++++
 1 files changed, 34 insertions(+), 0 deletions(-)
---
diff --git a/gdata/services/freebase/gdata-freebase-service.c 
b/gdata/services/freebase/gdata-freebase-service.c
index b20fe52..ace06f6 100644
--- a/gdata/services/freebase/gdata-freebase-service.c
+++ b/gdata/services/freebase/gdata-freebase-service.c
@@ -64,6 +64,7 @@ struct _GDataFreebaseServicePrivate {
 static void gdata_freebase_service_set_property (GObject *self, guint prop_id, const GValue *value, 
GParamSpec *pspec);
 static void gdata_freebase_service_get_property (GObject *self, guint prop_id, GValue *value, GParamSpec 
*pspec);
 static void gdata_freebase_service_finalize (GObject *self);
+static void append_query_headers (GDataService *self, GDataAuthorizationDomain *domain, SoupMessage 
*message);
 static GList *get_authorization_domains (void);
 
 _GDATA_DEFINE_AUTHORIZATION_DOMAIN (freebase, "freebase", "https" URLBASE)
@@ -82,6 +83,7 @@ gdata_freebase_service_class_init (GDataFreebaseServiceClass *klass)
        gobject_class->get_property = gdata_freebase_service_get_property;
        gobject_class->finalize = gdata_freebase_service_finalize;
 
+       service_class->append_query_headers = append_query_headers;
        service_class->get_authorization_domains = get_authorization_domains;
 
        /**
@@ -105,6 +107,38 @@ gdata_freebase_service_init (GDataFreebaseService *self)
        self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self, GDATA_TYPE_FREEBASE_SERVICE, 
GDataFreebaseServicePrivate);
 }
 
+static void
+append_query_headers (GDataService *self, GDataAuthorizationDomain *domain, SoupMessage *message)
+{
+       GDataFreebaseServicePrivate *priv = GDATA_FREEBASE_SERVICE (self)->priv;
+       const gchar *query;
+       GString *new_query;
+       SoupURI *uri;
+
+       g_assert (message != NULL);
+
+       if (priv->developer_key) {
+               uri = soup_message_get_uri (message);
+               query = soup_uri_get_query (uri);
+
+               /* Set the key on every request, as per
+                * https://developers.google.com/freebase/v1/parameters
+                */
+               if (query) {
+                       new_query = g_string_new (query);
+
+                       g_string_append (new_query, "&key=");
+                       g_string_append_uri_escaped (new_query, priv->developer_key, NULL, FALSE);
+
+                       soup_uri_set_query (uri, new_query->str);
+                       g_string_free (new_query, TRUE);
+               }
+       }
+
+       /* Chain up to the parent class */
+       GDATA_SERVICE_CLASS (gdata_freebase_service_parent_class)->append_query_headers (self, domain, 
message);
+}
+
 static GList *
 get_authorization_domains (void)
 {