changes for AGPL handling

2 files changed, 73 insertions, 4 deletions

diff --git a/src/util/mq.c b/src/util/mq.c
index 81a42e0c6..bf8f95790 100644
--- a/src/util/mq.c
+++ b/src/util/mq.c
@@ -1216,6 +1216,43 @@ GNUNET_MQ_copy_handlers (const struct GNUNET_MQ_MessageHandler *handlers)
 
 
 /**
+ * Copy an array of handlers, appending AGPL handler.
+ *
+ * Useful if the array has been delared in local memory and needs to be
+ * persisted for future use.
+ *
+ * @param handlers Array of handlers to be copied. Can be NULL (nothing done).
+ * @param agpl_handler function to call for AGPL handling
+ * @param agpl_cls closure for @a agpl_handler
+ * @return A newly allocated array of handlers.
+ *         Needs to be freed with #GNUNET_free.
+ */
+struct GNUNET_MQ_MessageHandler *
+GNUNET_MQ_copy_handlers2 (const struct GNUNET_MQ_MessageHandler *handlers,
+                          GNUNET_MQ_MessageCallback agpl_handler,
+                          void *agpl_cls)
+{
+  struct GNUNET_MQ_MessageHandler *copy;
+  unsigned int count;
+
+  if (NULL == handlers)
+    return NULL;
+  count = GNUNET_MQ_count_handlers (handlers);
+  copy = GNUNET_new_array (count + 2,
+                           struct GNUNET_MQ_MessageHandler);
+  GNUNET_memcpy (copy,
+                 handlers,
+                 count * sizeof (struct GNUNET_MQ_MessageHandler));
+  copy[count].mv = NULL;
+  copy[count].cb = agpl_handler;
+  copy[count].cls = agpl_cls;
+  copy[count].type = GNUNET_MESSAGE_TYPE_REQUEST_AGPL;
+  copy[count].expected_size = sizeof (struct GNUNET_MessageHeader);
+  return copy;
+}
+
+
+/**
  * Count the handlers in a handler array.
  *
  * @param handlers Array of handlers to be counted.
diff --git a/src/util/service.c b/src/util/service.c
index 1156093f4..ae1809950 100644
--- a/src/util/service.c
+++ b/src/util/service.c
@@ -1572,6 +1572,36 @@ teardown_service (struct GNUNET_SERVICE_Handle *sh)
 
 
 /**
+ * Function to return link to AGPL source upon request.
+ *
+ * @param cls closure with the identification of the client
+ * @param msg AGPL request
+ */
+static void
+return_agpl (void *cls,
+             const struct GNUNET_MessageHeader *msg)
+{
+  struct GNUNET_SERVICE_Client *client = cls;
+  struct GNUNET_MQ_Handle *mq;
+  struct GNUNET_MQ_Envelope *env;
+  struct GNUNET_MessageHeader *res;
+  size_t slen;
+
+  slen = strlen (GNUNET_AGPL_URL) + 1;
+  env = GNUNET_MQ_msg_extra (res,
+                             GNUNET_MESSAGE_TYPE_RESPONSE_AGPL,
+                             slen);
+  memcpy (&res[1],
+          GNUNET_AGPL_URL,
+          slen);
+  mq = GNUNET_SERVICE_client_get_mq (client);
+  GNUNET_MQ_send (mq,
+                  env);
+  GNUNET_SERVICE_client_continue (client);
+}
+
+
+/**
  * Low-level function to start a service if the scheduler
  * is already running.  Should only be used directly in
  * special cases.
@@ -1623,7 +1653,9 @@ GNUNET_SERVICE_start (const char *service_name,
   sh->connect_cb = connect_cb;
   sh->disconnect_cb = disconnect_cb;
   sh->cb_cls = cls;
-  sh->handlers = GNUNET_MQ_copy_handlers (handlers);
+  sh->handlers = GNUNET_MQ_copy_handlers2 (handlers,
+                                           &return_agpl,
+                                           NULL);
   if (GNUNET_OK != setup_service (sh))
   {
     GNUNET_free_non_null (sh->handlers);
@@ -1723,9 +1755,9 @@ GNUNET_SERVICE_run_ (int argc,
   struct GNUNET_GETOPT_CommandLineOption service_options[] = {
     GNUNET_GETOPT_option_cfgfile (&opt_cfg_filename),
     GNUNET_GETOPT_option_flag ('d',
-                                  "daemonize",
-                                  gettext_noop ("do daemonize (detach from terminal)"),
-                                  &do_daemonize),
+                               "daemonize",
+                               gettext_noop ("do daemonize (detach from terminal)"),
+                               &do_daemonize),
     GNUNET_GETOPT_option_help (NULL),
     GNUNET_GETOPT_option_loglevel (&loglev),
     GNUNET_GETOPT_option_logfile (&logfile),