From 8b332eaaeae50e0fdabe372247015e7523c41d2b Mon Sep 17 00:00:00 2001
From: Gergely Polonkai <gergely@polonkai.eu>
Date: Fri, 15 Jan 2016 19:28:07 +0100
Subject: [PATCH] Implement token_refresh

---
 src/matrix-api.c      |  8 ++++++--
 src/matrix-http-api.c | 44 ++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 49 insertions(+), 3 deletions(-)

diff --git a/src/matrix-api.c b/src/matrix-api.c
index 2dabe92..6409bf4 100644
--- a/src/matrix-api.c
+++ b/src/matrix-api.c
@@ -1707,11 +1707,15 @@ matrix_api_login(MatrixAPI *api,
  *            finished
  * @user_data: (closure): user data to pass to the callback function
  *             @callback
- * @refresh_token: the refresh token that was issued by the server
+ * @refresh_token: (allow-none): the refresh token that was issued by
+ *                 the server
  * @error: return location for a #GError, or %NULL
  *
  * Exchanges a refresh token for a new access token. This is intended
- * to be used if the access token has expired.
+ * to be used if the access token has expired. If @refresh_token is
+ * %NULL, iplementations MUST send the stored refresh token. If it is
+ * not pesent (e.g. because login hasn’t happened yet), this function
+ * MUST yield an error.
  */
 void
 matrix_api_token_refresh(MatrixAPI *api,
diff --git a/src/matrix-http-api.c b/src/matrix-http-api.c
index 73ab941..a27f2e2 100644
--- a/src/matrix-http-api.c
+++ b/src/matrix-http-api.c
@@ -2245,6 +2245,48 @@ i_whois(MatrixAPI *api,
     g_free(path);
 }
 
+static void
+i_token_refresh(MatrixAPI *api,
+                MatrixAPICallback callback,
+                gpointer user_data,
+                const gchar *refresh_token,
+                GError **error)
+{
+    MatrixHTTPAPIPrivate *priv = matrix_http_api_get_instance_private(
+            MATRIX_HTTP_API(api));
+    JsonBuilder *builder;
+    JsonNode *body;
+
+    if (!refresh_token && !priv->token) {
+        g_set_error(error,
+                    MATRIX_API_ERROR, MATRIX_API_ERROR_MISSING_TOKEN,
+                    "No token available");
+
+        return;
+    }
+
+    builder = json_builder_new();
+    json_builder_begin_object(builder);
+
+    json_builder_set_member_name(builder, "refresh_token");
+
+    if (!refresh_token) {
+        json_builder_add_string_value(builder, priv->refresh_token);
+    } else {
+        json_builder_add_string_value(builder, refresh_token);
+    }
+
+    json_builder_end_object(builder);
+    body = json_builder_get_root(builder);
+    g_object_unref(builder);
+
+    _send(MATRIX_HTTP_API(api),
+          callback, user_data,
+          CALL_API,
+          "POST", "tokenreresh", NULL, NULL, body, NULL,
+          FALSE, error);
+}
+
 static void
 matrix_http_api_matrix_api_init(MatrixAPIInterface *iface)
 {
@@ -2319,7 +2361,7 @@ matrix_http_api_matrix_api_init(MatrixAPIInterface *iface)
 
     /* Session management */
     iface->login = i_login;
-    iface->token_refresh = NULL;
+    iface->token_refresh = i_token_refresh;
 
     /* User data */
     iface->get_3pids = NULL;