Removed IPv6 linklocal check
[oweals/gnunet.git] / src / transport / plugin_transport_http.c
index 0238746bce8d2642d38b860c7c4dbe3b1d339cb9..bf63769f7a29620bb9608085ed1a495c10fbe25b 100644 (file)
  */
 struct IPv4HttpAddress
 {
+  /**
+   * Linked list next
+   */
+  struct IPv4HttpAddress * next;
+
+  /**
+   * Linked list previous
+   */
+  struct IPv4HttpAddress * prev;
+
   /**
    * IPv4 address, in network byte order.
    */
@@ -113,6 +123,16 @@ struct IPv4HttpAddress
  */
 struct IPv6HttpAddress
 {
+  /**
+   * Linked list next
+   */
+  struct IPv6HttpAddress * next;
+
+  /**
+   * Linked list previous
+   */
+  struct IPv6HttpAddress * prev;
+
   /**
    * IPv6 address.
    */
@@ -203,6 +223,16 @@ struct HTTP_PeerContext
    * Last session used to send data
    */
   struct Session * last_session;
+
+  /**
+   * The task resetting inbound quota delay
+   */
+  GNUNET_SCHEDULER_TaskIdentifier reset_task;
+
+  /**
+   * Delay from transport service inbound quota tracker when to receive data again
+   */
+  struct GNUNET_TIME_Relative delay;
 };
 
 
@@ -381,6 +411,26 @@ struct Plugin
    */
   CURLM * multi_handle;
 
+  /**
+   * ipv4 DLL head
+   */
+  struct IPv4HttpAddress * ipv4_addr_head;
+
+  /**
+   * ipv4 DLL tail
+   */
+  struct IPv4HttpAddress * ipv4_addr_tail;
+
+  /**
+   * ipv6 DLL head
+   */
+  struct IPv6HttpAddress * ipv6_addr_head;
+
+  /**
+   * ipv6 DLL tail
+   */
+  struct IPv6HttpAddress * ipv6_addr_tail;
+
   /**
    * Our ASCII encoded, hashed peer identity
    * This string is used to distinguish between connections and is added to the urls
@@ -476,6 +526,27 @@ static int send_check_connections (struct Plugin *plugin, struct Session *ps);
  */
 static int curl_schedule (struct Plugin *plugin);
 
+/**
+ * Task scheduled to reset the inbound quota delay for a specific peer
+ * @param cls plugin as closure
+ * @param tc task context
+ */
+static void reset_inbound_quota_delay (void *cls,
+                                       const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+       struct HTTP_PeerContext * pc;
+
+       GNUNET_assert(cls !=NULL);
+
+       pc = (struct HTTP_PeerContext *) cls;
+       pc->reset_task = GNUNET_SCHEDULER_NO_TASK;
+
+       if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
+         return;
+
+       pc->delay = GNUNET_TIME_relative_get_zero ();
+}
+
 
 /**
  * Creates a valid url from passed address and id
@@ -674,14 +745,16 @@ process_interfaces (void *cls,
       {
          if (0 == memcmp(&plugin->bind4_address->sin_addr, &bnd_cmp, sizeof (struct in_addr)))
          {
+             GNUNET_CONTAINER_DLL_insert(plugin->ipv4_addr_head,plugin->ipv4_addr_tail,t4);
                  plugin->env->notify_address(plugin->env->cls,PROTOCOL_PREFIX,t4, sizeof (struct IPv4HttpAddress), GNUNET_TIME_UNIT_FOREVER_REL);
          }
       }
       else
       {
+          GNUNET_CONTAINER_DLL_insert(plugin->ipv4_addr_head,plugin->ipv4_addr_tail,t4);
          plugin->env->notify_address(plugin->env->cls,PROTOCOL_PREFIX,t4, sizeof (struct IPv4HttpAddress), GNUNET_TIME_UNIT_FOREVER_REL);
       }
-      GNUNET_free (t4);
+
     }
   else if ((af == AF_INET6) && (plugin->use_ipv6 == GNUNET_YES)  && (plugin->bind4_address == NULL))
     {
@@ -701,6 +774,7 @@ process_interfaces (void *cls,
                      sizeof (struct in6_addr));
              t6->u6_port = htons (plugin->port_inbound);
              plugin->env->notify_address(plugin->env->cls,PROTOCOL_PREFIX,t6,sizeof (struct IPv6HttpAddress) , GNUNET_TIME_UNIT_FOREVER_REL);
+             GNUNET_CONTAINER_DLL_insert(plugin->ipv6_addr_head,plugin->ipv6_addr_tail,t6);
          }
       }
       else
@@ -709,9 +783,9 @@ process_interfaces (void *cls,
                   &((struct sockaddr_in6 *) addr)->sin6_addr,
                   sizeof (struct in6_addr));
           t6->u6_port = htons (plugin->port_inbound);
+          GNUNET_CONTAINER_DLL_insert(plugin->ipv6_addr_head,plugin->ipv6_addr_tail,t6);
           plugin->env->notify_address(plugin->env->cls,PROTOCOL_PREFIX,t6,sizeof (struct IPv6HttpAddress) , GNUNET_TIME_UNIT_FOREVER_REL);
       }
-      GNUNET_free (t6);
     }
   return GNUNET_OK;
 }
@@ -781,7 +855,7 @@ static void mhd_write_mst_cb (void *cls,
                               void *client,
                               const struct GNUNET_MessageHeader *message)
 {
-
+  struct GNUNET_TIME_Relative delay;
   struct Session *ps  = cls;
   GNUNET_assert(ps != NULL);
 
@@ -795,11 +869,22 @@ static void mhd_write_mst_cb (void *cls,
               ntohs(message->size),
              GNUNET_i2s(&(ps->peercontext)->identity),http_plugin_address_to_string(NULL,ps->addr,ps->addrlen));
 #endif
-  pc->plugin->env->receive (ps->peercontext->plugin->env->cls,
-                           &pc->identity,
-                           message, 1, ps,
-                           NULL,
-                           0);
+  delay = pc->plugin->env->receive (ps->peercontext->plugin->env->cls,
+                                                                                                                 &pc->identity,
+                                                                                                                 message, 1, ps,
+                                                                                                                 NULL,
+                                                                                                                 0);
+  pc->delay = delay;
+  if (pc->reset_task != GNUNET_SCHEDULER_NO_TASK)
+       GNUNET_SCHEDULER_cancel (pc->plugin->env->sched, pc->reset_task);
+
+  if (delay.value > 0)
+  {
+#if DEBUG_HTTP
+       GNUNET_log (GNUNET_ERROR_TYPE_ERROR,"Connection %X: Inbound quota management: delay next read for %llu ms \n", ps, delay.value);
+#endif
+       pc->reset_task = GNUNET_SCHEDULER_add_delayed (pc->plugin->env->sched, delay, &reset_inbound_quota_delay, pc);
+  }
 }
 
 /**
@@ -906,7 +991,7 @@ mdh_access_cb (void *cls,
   struct IPv4HttpAddress ipv4addr;
   struct IPv6HttpAddress ipv6addr;
 
-  struct HTTP_PeerContext *pc;
+  struct HTTP_PeerContext *pc = NULL;
   struct Session *ps = NULL;
   struct Session *ps_tmp = NULL;
 
@@ -1090,8 +1175,17 @@ mdh_access_cb (void *cls,
     /* Recieving data */
     if ((*upload_data_size > 0) && (ps->recv_active == GNUNET_YES))
     {
-      res = GNUNET_SERVER_mst_receive(ps->msgtok, ps, upload_data,*upload_data_size, GNUNET_NO, GNUNET_NO);
-      (*upload_data_size) = 0;
+      if (pc->delay.value == 0)
+      {
+                 res = GNUNET_SERVER_mst_receive(ps->msgtok, ps, upload_data,*upload_data_size, GNUNET_NO, GNUNET_NO);
+                 (*upload_data_size) = 0;
+      }
+      else
+      {
+#if DEBUG_HTTP
+         GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: no inbound bandwidth available! Next read was delayed for  %llu ms\n", ps, ps->peercontext->delay.value);
+#endif
+      }
       return MHD_YES;
     }
     else
@@ -1461,6 +1555,7 @@ static void curl_receive_mst_cb  (void *cls,
                                 const struct GNUNET_MessageHeader *message)
 {
   struct Session *ps  = cls;
+  struct GNUNET_TIME_Relative delay;
   GNUNET_assert(ps != NULL);
 
   struct HTTP_PeerContext *pc = ps->peercontext;
@@ -1473,11 +1568,23 @@ static void curl_receive_mst_cb  (void *cls,
               ntohs(message->size),
               GNUNET_i2s(&(pc->identity)),http_plugin_address_to_string(NULL,ps->addr,ps->addrlen));
 #endif
-  pc->plugin->env->receive (pc->plugin->env->cls,
-                            &pc->identity,
-                            message, 1, ps,
-                            ps->addr,
-                            ps->addrlen);
+  delay = pc->plugin->env->receive (pc->plugin->env->cls,
+                                                                 &pc->identity,
+                                                             message, 1, ps,
+                                                             ps->addr,
+                                                             ps->addrlen);
+
+  pc->delay = delay;
+  if (pc->reset_task != GNUNET_SCHEDULER_NO_TASK)
+       GNUNET_SCHEDULER_cancel (pc->plugin->env->sched, pc->reset_task);
+
+  if (delay.value > 0)
+  {
+#if DEBUG_HTTP
+       GNUNET_log (GNUNET_ERROR_TYPE_ERROR,"Connection %X: Inbound quota management: delay next read for %llu ms \n", ps, delay.value);
+#endif
+       pc->reset_task = GNUNET_SCHEDULER_add_delayed (pc->plugin->env->sched, delay, &reset_inbound_quota_delay, pc);
+  }
 }
 
 
@@ -1493,6 +1600,15 @@ static void curl_receive_mst_cb  (void *cls,
 static size_t curl_receive_cb( void *stream, size_t size, size_t nmemb, void *ptr)
 {
   struct Session * ps = ptr;
+
+  if (ps->peercontext->delay.value > 0)
+  {
+#if DEBUG_HTTP
+         GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: no inbound bandwidth available! Next read was delayed for  %llu ms\n", ps, ps->peercontext->delay.value);
+#endif
+         return (0);
+  }
+
 #if DEBUG_CONNECTIONS
   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: %u bytes received\n",ps, size*nmemb);
 #endif
@@ -2216,7 +2332,7 @@ http_plugin_send (void *cls,
 
   if (msgbuf_size >= (ps->queue_length_max - ps->queue_length_cur))
   {
-       GNUNET_log (GNUNET_ERROR_TYPE_ERROR,"Queue %X full: (%u) bytes in queue, would discard message (%u)\n", ps, (ps->queue_length_max - ps->queue_length_cur), msgbuf_size);
+       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Queue %X full: %u bytes in queue available, message with %u is too big\n", ps, (ps->queue_length_max - ps->queue_length_cur), msgbuf_size);
        //return GNUNET_SYSERR;
   }
 
@@ -2393,6 +2509,10 @@ http_plugin_address_suggested (void *cls,
   struct Plugin *plugin = cls;
   struct IPv4HttpAddress *v4;
   struct IPv6HttpAddress *v6;
+
+  struct IPv4HttpAddress *tv4 = plugin->ipv4_addr_head;
+  struct IPv6HttpAddress *tv6 = plugin->ipv6_addr_head;
+  int res;
   unsigned int port;
 
   GNUNET_assert(cls !=NULL);
@@ -2409,6 +2529,23 @@ http_plugin_address_suggested (void *cls,
       {
         return GNUNET_SYSERR;
       } */
+
+      if (plugin->bind4_address!=NULL)
+      {
+         res = memcmp (&plugin->bind4_address->sin_addr, &v4->ipv4_addr, sizeof(uint32_t));
+         if ((res==0) && (ntohs (v4->u_port) == plugin->port_inbound))
+                 return GNUNET_OK;
+         else
+                 return GNUNET_SYSERR;
+      }
+
+      while (tv4!=NULL)
+      {
+         res = memcmp (&tv4->ipv4_addr, &v4->ipv4_addr, sizeof(uint32_t));
+         if ((res==0) && (v4->u_port == tv4->u_port) && (ntohs (v4->u_port) == plugin->port_inbound))
+                 return GNUNET_OK;
+         tv4 = tv4->next;
+      }
       port = ntohs (v4->u_port);
       if (port != plugin->port_inbound)
       {
@@ -2418,18 +2555,26 @@ http_plugin_address_suggested (void *cls,
   if (addrlen == sizeof (struct IPv6HttpAddress))
     {
       v6 = (struct IPv6HttpAddress *) addr;
-      if (IN6_IS_ADDR_LINKLOCAL (&v6->ipv6_addr))
-        {
-          return GNUNET_SYSERR;
-        }
-      port = ntohs (v6->u6_port);
-      if (port != plugin->port_inbound)
+
+      if (plugin->bind6_address!=NULL)
       {
-        return GNUNET_SYSERR;
+         res = memcmp (&plugin->bind6_address->sin6_addr, &v6->ipv6_addr, sizeof(struct in6_addr));
+         if ((res==0) && (ntohs (v6->u6_port) == plugin->port_inbound))
+                 return GNUNET_OK;
+         else
+                 return GNUNET_SYSERR;
+      }
+
+      while (tv6!=NULL)
+      {
+         res = memcmp (&tv6->ipv6_addr, &v6->ipv6_addr, sizeof(struct in6_addr));
+         if ((res==0) && (v6->u6_port == tv6->u6_port) && (ntohs (v6->u6_port) == plugin->port_inbound))
+                 return GNUNET_OK;
+         tv6 = tv6->next;
       }
     }
 
-  return GNUNET_OK;
+  return GNUNET_SYSERR;
 }
 
 
@@ -2495,6 +2640,8 @@ LIBGNUNET_PLUGIN_TRANSPORT_DONE (void *cls)
   struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
   struct Plugin *plugin = api->cls;
   CURLMcode mret;
+  struct IPv4HttpAddress * ipv4addr;
+  struct IPv6HttpAddress * ipv6addr;
   GNUNET_assert(cls !=NULL);
 
   if (plugin->http_server_daemon_v4 != NULL)
@@ -2520,6 +2667,20 @@ LIBGNUNET_PLUGIN_TRANSPORT_DONE (void *cls)
     plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
   }
 
+  while (plugin->ipv4_addr_head!=NULL)
+  {
+         ipv4addr = plugin->ipv4_addr_head;
+         GNUNET_CONTAINER_DLL_remove(plugin->ipv4_addr_head,plugin->ipv4_addr_tail,ipv4addr);
+         GNUNET_free(ipv4addr);
+  }
+
+  while (plugin->ipv6_addr_head!=NULL)
+  {
+         ipv6addr = plugin->ipv6_addr_head;
+         GNUNET_CONTAINER_DLL_remove(plugin->ipv6_addr_head,plugin->ipv6_addr_tail,ipv6addr);
+         GNUNET_free(ipv6addr);
+  }
+
   /* free all peer information */
   if (plugin->peers!=NULL)
   {