first batch of license fixes (boring)
[oweals/gnunet.git] / src / hostlist / gnunet-daemon-hostlist_server.c
index e090bfd87c7d6d4aed3f0ca761c80c2a88744c9e..47666181292244f8ef47689e33c701f89b2af90f 100644 (file)
@@ -1,21 +1,16 @@
 /*
      This file is part of GNUnet.
-     (C) 2008, 2009, 2010, 2014 Christian Grothoff (and other contributing authors)
+     Copyright (C) 2008, 2009, 2010, 2014, 2016 GNUnet e.V.
 
-     GNUnet is free software; you can redistribute it and/or modify
-     it under the terms of the GNU General Public License as published
-     by the Free Software Foundation; either version 3, or (at your
-     option) any later version.
+     GNUnet is free software: you can redistribute it and/or modify it
+     under the terms of the GNU General Public License as published
+     by the Free Software Foundation, either version 3 of the License,
+     or (at your option) any later version.
 
      GNUnet is distributed in the hope that it will be useful, but
      WITHOUT ANY WARRANTY; without even the implied warranty of
      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-     General Public License for more details.
-
-     You should have received a copy of the GNU General Public License
-     along with GNUnet; see the file COPYING.  If not, write to the
-     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-     Boston, MA 02111-1307, USA.
+     Affero General Public License for more details.
 */
 
 /**
@@ -74,12 +69,12 @@ static struct GNUNET_PEERINFO_NotifyContext *notify;
 /**
  * Our primary task for IPv4.
  */
-static GNUNET_SCHEDULER_TaskIdentifier hostlist_task_v4;
+static struct GNUNET_SCHEDULER_Task *hostlist_task_v4;
 
 /**
  * Our primary task for IPv6.
  */
-static GNUNET_SCHEDULER_TaskIdentifier hostlist_task_v6;
+static struct GNUNET_SCHEDULER_Task *hostlist_task_v6;
 
 /**
  * Our canonical response.
@@ -101,12 +96,6 @@ static int advertising;
  */
 static char *hostlist_uri;
 
-/**
- * Map of peer identities to `struct GNUNET_CORE_TransmitHandle *` for
- * pending hostlist server advertisements.
- */
-static struct GNUNET_CONTAINER_MultiPeerMap *advertisements;
-
 
 /**
  * Context for #host_processor().
@@ -170,8 +159,9 @@ finish_response ()
               "Creating hostlist response with %u bytes\n",
               (unsigned int) builder->size);
   response =
-      MHD_create_response_from_data (builder->size, builder->data, MHD_YES,
-                                     MHD_NO);
+      MHD_create_response_from_buffer (builder->size,
+                                       builder->data,
+                                       MHD_RESPMEM_MUST_FREE);
   add_cors_headers (response);
   if ((NULL == daemon_handle_v4) && (NULL == daemon_handle_v6))
   {
@@ -237,6 +227,7 @@ host_processor (void *cls,
     builder->pitr = NULL;
     GNUNET_free_non_null (builder->data);
     GNUNET_free (builder);
+    builder = NULL;
     GNUNET_log (GNUNET_ERROR_TYPE_INFO,
                 _("Error in communication with PEERINFO service: %s\n"),
                 err_msg);
@@ -290,7 +281,7 @@ host_processor (void *cls,
   GNUNET_array_grow (builder->data,
                      builder->size,
                      old + s);
-  memcpy (&builder->data[old],
+  GNUNET_memcpy (&builder->data[old],
           hello,
           s);
 }
@@ -393,9 +384,7 @@ access_handler_callback (void *cls,
   if (NULL == *con_cls)
   {
     (*con_cls) = &dummy;
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-                "Sending 100 CONTINUE reply\n");
-    return MHD_YES;             /* send 100 continue */
+    return MHD_YES;
   }
   if (0 != *upload_data_size)
   {
@@ -430,51 +419,47 @@ access_handler_callback (void *cls,
 /**
  * Handler called by CORE when CORE is ready to transmit message
  *
- * @param cls closure
+ * @param cls closure with the `const struct GNUNET_PeerIdentity *` of
+ *            the peer we are sending to
  * @param size size of buffer to copy message to
  * @param buf buffer to copy message to
  * @return number of bytes copied to @a buf
  */
-static size_t
-adv_transmit_ready (void *cls,
-                    size_t size,
-                    void *buf)
+static void
+adv_transmit (struct GNUNET_MQ_Handle *mq)
 {
   static uint64_t hostlist_adv_count;
-  size_t transmission_size;
+  const void *extra;
+  uint64_t flags;
   size_t uri_size;              /* Including \0 termination! */
-  struct GNUNET_MessageHeader header;
-  char *cbuf;
+  struct GNUNET_MessageHeader *header;
+  struct GNUNET_MQ_Envelope *env;
 
-  if (NULL == buf)
-  {
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-                "Transmission failed, buffer invalid!\n");
-    return 0;
-  }
+  extra = GNUNET_CORE_get_mq_options (GNUNET_YES,
+                                     GNUNET_CORE_PRIO_BEST_EFFORT,
+                                     &flags);
   uri_size = strlen (hostlist_uri) + 1;
-  transmission_size = sizeof (struct GNUNET_MessageHeader) + uri_size;
-  header.type = htons (GNUNET_MESSAGE_TYPE_HOSTLIST_ADVERTISEMENT);
-  header.size = htons (transmission_size);
-  GNUNET_assert (size >= transmission_size);
-  memcpy (buf,
-          &header,
-          sizeof (struct GNUNET_MessageHeader));
-  cbuf = buf;
-  memcpy (&cbuf[sizeof (struct GNUNET_MessageHeader)],
-          hostlist_uri,
-          uri_size);
+  env = GNUNET_MQ_msg_extra (header,
+                            uri_size,
+                            GNUNET_MESSAGE_TYPE_HOSTLIST_ADVERTISEMENT);
+  GNUNET_memcpy (&header[1],
+                hostlist_uri,
+                uri_size);
+  GNUNET_MQ_env_set_options (env,
+                            flags,
+                            extra);
+  GNUNET_MQ_send (mq,
+                 env);
   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
               "Sent advertisement message: Copied %u bytes into buffer!\n",
-              (unsigned int) transmission_size);
+              (unsigned int) uri_size);
   hostlist_adv_count++;
   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              " # Sent advertisement message: %u\n",
-              hostlist_adv_count);
+              " # Sent advertisement message: %llu\n",
+              (unsigned long long) hostlist_adv_count);
   GNUNET_STATISTICS_update (stats,
                             gettext_noop ("# hostlist advertisements send"), 1,
                             GNUNET_NO);
-  return transmission_size;
 }
 
 
@@ -483,77 +468,39 @@ adv_transmit_ready (void *cls,
  *
  * @param cls closure
  * @param peer peer identity this notification is about
+ * @param mq queue for transmission to @a peer
+ * @return NULL (must!)
  */
-static void
+static void *
 connect_handler (void *cls,
-                 const struct GNUNET_PeerIdentity *peer)
+                 const struct GNUNET_PeerIdentity *peer,
+                struct GNUNET_MQ_Handle *mq)
 {
   size_t size;
-  struct GNUNET_CORE_TransmitHandle *th;
 
   if (! advertising)
-    return;
+    return NULL;
   if (NULL == hostlist_uri)
-    return;
+    return NULL;
   size = strlen (hostlist_uri) + 1;
   if (size + sizeof (struct GNUNET_MessageHeader) >=
-      GNUNET_SERVER_MAX_MESSAGE_SIZE)
+      GNUNET_MAX_MESSAGE_SIZE)
   {
     GNUNET_break (0);
-    return;
+    return NULL;
   }
   size += sizeof (struct GNUNET_MessageHeader);
   if (NULL == core)
   {
     GNUNET_break (0);
-    return;
+    return NULL;
   }
   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
               "Asked CORE to transmit advertisement message with a size of %u bytes to peer `%s'\n",
-              size,
+              (unsigned int) size,
               GNUNET_i2s (peer));
-  if (NULL ==
-      (th = GNUNET_CORE_notify_transmit_ready (core, GNUNET_YES,
-                                               GNUNET_CORE_PRIO_BEST_EFFORT,
-                                               GNUNET_ADV_TIMEOUT,
-                                               peer,
-                                               size,
-                                               &adv_transmit_ready, NULL)) )
-  {
-    GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
-                _("Advertisement message could not be queued by core\n"));
-  }
-  GNUNET_assert (GNUNET_YES ==
-                 GNUNET_CONTAINER_multipeermap_put (advertisements,
-                                                    peer,
-                                                    th,
-                                                    GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
-}
-
-
-/**
- * Method called whenever a given peer disconnects.
- *
- * @param cls closure
- * @param peer peer identity this notification is about
- */
-static void
-disconnect_handler (void *cls,
-                    const struct GNUNET_PeerIdentity *peer)
-{
-  struct GNUNET_CORE_TransmitHandle *th;
-
-  if (! advertising)
-    return;
-  th = GNUNET_CONTAINER_multipeermap_get (advertisements,
-                                          peer);
-  if (NULL == th)
-    return;
-  GNUNET_assert (GNUNET_YES ==
-                 GNUNET_CONTAINER_multipeermap_remove (advertisements,
-                                                       peer,
-                                                       th));
-  GNUNET_CORE_notify_transmit_ready_cancel (th);
+  adv_transmit (mq);
+  return NULL;
 }
 
 
@@ -598,7 +545,6 @@ process_notify (void *cls,
   builder->pitr
     = GNUNET_PEERINFO_iterate (peerinfo,
                                GNUNET_NO, NULL,
-                               GNUNET_TIME_UNIT_MINUTES,
                                &host_processor, NULL);
 }
 
@@ -607,7 +553,7 @@ process_notify (void *cls,
  * Function that queries MHD's select sets and
  * starts the task waiting for them.
  */
-static GNUNET_SCHEDULER_TaskIdentifier
+static struct GNUNET_SCHEDULER_Task *
 prepare_daemon (struct MHD_Daemon *daemon_handle);
 
 
@@ -616,21 +562,16 @@ prepare_daemon (struct MHD_Daemon *daemon_handle);
  * and schedule the next run.
  *
  * @param cls the `struct MHD_Daemon` of the HTTP server to run
- * @param tc scheduler context
  */
 static void
-run_daemon (void *cls,
-            const struct GNUNET_SCHEDULER_TaskContext *tc)
+run_daemon (void *cls)
 {
   struct MHD_Daemon *daemon_handle = cls;
 
   if (daemon_handle == daemon_handle_v4)
-    hostlist_task_v4 = GNUNET_SCHEDULER_NO_TASK;
+    hostlist_task_v4 = NULL;
   else
-    hostlist_task_v6 = GNUNET_SCHEDULER_NO_TASK;
-
-  if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
-    return;
+    hostlist_task_v6 = NULL;
   GNUNET_assert (MHD_YES == MHD_run (daemon_handle));
   if (daemon_handle == daemon_handle_v4)
     hostlist_task_v4 = prepare_daemon (daemon_handle);
@@ -645,10 +586,10 @@ run_daemon (void *cls,
  *
  * @param daemon_handle HTTP server to prepare to run
  */
-static GNUNET_SCHEDULER_TaskIdentifier
+static struct GNUNET_SCHEDULER_Task *
 prepare_daemon (struct MHD_Daemon *daemon_handle)
 {
-  GNUNET_SCHEDULER_TaskIdentifier ret;
+  struct GNUNET_SCHEDULER_Task * ret;
   fd_set rs;
   fd_set ws;
   fd_set es;
@@ -665,7 +606,9 @@ prepare_daemon (struct MHD_Daemon *daemon_handle)
   wrs = GNUNET_NETWORK_fdset_create ();
   wws = GNUNET_NETWORK_fdset_create ();
   max = -1;
-  GNUNET_assert (MHD_YES == MHD_get_fdset (daemon_handle, &rs, &ws, &es, &max));
+  GNUNET_assert (MHD_YES ==
+                MHD_get_fdset (daemon_handle,
+                               &rs, &ws, &es, &max));
   haveto = MHD_get_timeout (daemon_handle, &timeout);
   if (haveto == MHD_YES)
     tv.rel_value_us = (uint64_t) timeout * 1000LL;
@@ -673,10 +616,9 @@ prepare_daemon (struct MHD_Daemon *daemon_handle)
     tv = GNUNET_TIME_UNIT_FOREVER_REL;
   GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
   GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
-  ret =
-      GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_HIGH,
-                                  tv, wrs, wws,
-                                   &run_daemon, daemon_handle);
+  ret = GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_HIGH,
+                                    tv, wrs, wws,
+                                    &run_daemon, daemon_handle);
   GNUNET_NETWORK_fdset_destroy (wrs);
   GNUNET_NETWORK_fdset_destroy (wws);
   return ret;
@@ -690,7 +632,6 @@ prepare_daemon (struct MHD_Daemon *daemon_handle)
  * @param st statistics handle to use
  * @param co core handle to use
  * @param[out] server_ch set to handler for CORE connect events
- * @param[out] server_dh set to handler for CORE disconnect events
  * @param advertise #GNUNET_YES if we should advertise our hostlist
  * @return #GNUNET_OK on success
  */
@@ -699,7 +640,6 @@ GNUNET_HOSTLIST_server_start (const struct GNUNET_CONFIGURATION_Handle *c,
                               struct GNUNET_STATISTICS_Handle *st,
                               struct GNUNET_CORE_Handle *co,
                               GNUNET_CORE_ConnectEventHandler *server_ch,
-                              GNUNET_CORE_DisconnectEventHandler *server_dh,
                               int advertise)
 {
   unsigned long long port;
@@ -724,8 +664,6 @@ GNUNET_HOSTLIST_server_start (const struct GNUNET_CONFIGURATION_Handle *c,
   {
     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                 "Advertising enabled on this hostlist server\n");
-    advertisements = GNUNET_CONTAINER_multipeermap_create (8,
-                                                           GNUNET_NO);
   }
   cfg = c;
   stats = st;
@@ -791,11 +729,15 @@ GNUNET_HOSTLIST_server_start (const struct GNUNET_CONFIGURATION_Handle *c,
   }
   else
     ipv4 = NULL;
-  if (GNUNET_CONFIGURATION_have_value (cfg, "HOSTLIST", "BINDTOIPV6"))
+  if (GNUNET_CONFIGURATION_have_value (cfg,
+                                      "HOSTLIST",
+                                      "BINDTOIPV6"))
   {
     if (GNUNET_OK !=
-        GNUNET_CONFIGURATION_get_value_string (cfg, "HOSTLIST",
-                                               "BINDTOIP", &ipv6))
+        GNUNET_CONFIGURATION_get_value_string (cfg,
+                                              "HOSTLIST",
+                                               "BINDTOIP",
+                                              &ipv6))
       {
       GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
           _("BINDTOIP does not a valid IPv4 address! Ignoring BINDTOIPV6.\n"));
@@ -849,9 +791,9 @@ GNUNET_HOSTLIST_server_start (const struct GNUNET_CONFIGURATION_Handle *c,
                                        &accept_policy_callback, NULL,
                                        &access_handler_callback, NULL,
                                        MHD_OPTION_CONNECTION_LIMIT,
-                                       (unsigned int) 16,
+                                       (unsigned int) 128,
                                        MHD_OPTION_PER_IP_CONNECTION_LIMIT,
-                                       (unsigned int) 1,
+                                       (unsigned int) 32,
                                        MHD_OPTION_CONNECTION_TIMEOUT,
                                        (unsigned int) 16,
                                        MHD_OPTION_CONNECTION_MEMORY_LIMIT,
@@ -864,9 +806,9 @@ GNUNET_HOSTLIST_server_start (const struct GNUNET_CONFIGURATION_Handle *c,
                                        &accept_policy_callback, NULL,
                                        &access_handler_callback, NULL,
                                        MHD_OPTION_CONNECTION_LIMIT,
-                                       (unsigned int) 16,
+                                       (unsigned int) 128,
                                        MHD_OPTION_PER_IP_CONNECTION_LIMIT,
-                                       (unsigned int) 1,
+                                       (unsigned int) 32,
                                        MHD_OPTION_CONNECTION_TIMEOUT,
                                        (unsigned int) 16,
                                        MHD_OPTION_CONNECTION_MEMORY_LIMIT,
@@ -886,7 +828,6 @@ GNUNET_HOSTLIST_server_start (const struct GNUNET_CONFIGURATION_Handle *c,
 
   core = co;
   *server_ch = &connect_handler;
-  *server_dh = &disconnect_handler;
   if (NULL != daemon_handle_v4)
     hostlist_task_v4 = prepare_daemon (daemon_handle_v4);
   if (NULL != daemon_handle_v6)
@@ -906,15 +847,15 @@ GNUNET_HOSTLIST_server_stop ()
 {
   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
               "Hostlist server shutdown\n");
-  if (GNUNET_SCHEDULER_NO_TASK != hostlist_task_v6)
+  if (NULL != hostlist_task_v6)
   {
     GNUNET_SCHEDULER_cancel (hostlist_task_v6);
-    hostlist_task_v6 = GNUNET_SCHEDULER_NO_TASK;
+    hostlist_task_v6 = NULL;
   }
-  if (GNUNET_SCHEDULER_NO_TASK != hostlist_task_v4)
+  if (NULL != hostlist_task_v4)
   {
     GNUNET_SCHEDULER_cancel (hostlist_task_v4);
-    hostlist_task_v4 = GNUNET_SCHEDULER_NO_TASK;
+    hostlist_task_v4 = NULL;
   }
   if (NULL != daemon_handle_v4)
   {
@@ -945,19 +886,13 @@ GNUNET_HOSTLIST_server_stop ()
     }
     GNUNET_free_non_null (builder->data);
     GNUNET_free (builder);
+    builder = NULL;
   }
   if (NULL != peerinfo)
   {
     GNUNET_PEERINFO_disconnect (peerinfo);
     peerinfo = NULL;
   }
-  if (NULL != advertisements)
-  {
-    GNUNET_break (0 ==
-                  GNUNET_CONTAINER_multipeermap_size (advertisements));
-    GNUNET_CONTAINER_multipeermap_destroy (advertisements);
-    advertisements = NULL;
-  }
   cfg = NULL;
   stats = NULL;
   core = NULL;