-report error if starting openssl failed
[oweals/gnunet.git] / src / ats / gnunet-service-ats_scheduling.c
index bb95182c854e75e767055a08495cdc086415e4bc..4a20f909dbc496a8e915d5224ee98551fcd0f86b 100644 (file)
@@ -42,11 +42,16 @@ static struct GNUNET_SERVER_NotificationContext *nc;
 static struct GNUNET_SERVER_Client *my_client;
 
 
+/**
+ * Handle to address subsystem
+ */
+static struct GAS_Addresses_Handle *address_handle;
+
 /**
  * Register a new scheduling client.
  *
  * @param client handle of the new client
- * @return GNUNET_OK on success, GNUNET_SYSERR on error 
+ * @return GNUNET_OK on success, GNUNET_SYSERR on error
  */
 int
 GAS_scheduling_add_client (struct GNUNET_SERVER_Client *client)
@@ -54,12 +59,11 @@ GAS_scheduling_add_client (struct GNUNET_SERVER_Client *client)
   if (my_client != NULL)
   {
     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-               "This ATS already has a scheduling client, refusing new scheduling client for now.\n");
+                "This ATS already has a scheduling client, refusing new scheduling client for now.\n");
     return GNUNET_SYSERR;
   }
   my_client = client;
   GNUNET_SERVER_notification_context_add (nc, client);
-  GNUNET_SERVER_client_keep (client);
   return GNUNET_OK;
 }
 
@@ -75,8 +79,7 @@ GAS_scheduling_remove_client (struct GNUNET_SERVER_Client *client)
 {
   if (my_client != client)
     return;
-  GAS_addresses_destroy_all ();
-  GNUNET_SERVER_client_drop (client);
+  GAS_addresses_destroy_all (address_handle);
   my_client = NULL;
 }
 
@@ -96,32 +99,37 @@ GAS_scheduling_remove_client (struct GNUNET_SERVER_Client *client)
  * @param bandwidth_in assigned inbound bandwidth
  */
 void
-GAS_scheduling_transmit_address_suggestion (const struct GNUNET_PeerIdentity *peer,
-                                           const char *plugin_name,
-                                           const void *plugin_addr, size_t plugin_addr_len,
-                                           uint32_t session_id,
-                                           const struct GNUNET_ATS_Information *atsi,
-                                           uint32_t atsi_count,                                
-                                           struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
-                                           struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in)
+GAS_scheduling_transmit_address_suggestion (const struct GNUNET_PeerIdentity
+                                            *peer, const char *plugin_name,
+                                            const void *plugin_addr,
+                                            size_t plugin_addr_len,
+                                            uint32_t session_id,
+                                            const struct GNUNET_ATS_Information
+                                            *atsi, uint32_t atsi_count,
+                                            struct GNUNET_BANDWIDTH_Value32NBO
+                                            bandwidth_out,
+                                            struct GNUNET_BANDWIDTH_Value32NBO
+                                            bandwidth_in)
 {
   struct AddressSuggestionMessage *msg;
   size_t plugin_name_length = strlen (plugin_name) + 1;
-  size_t msize = sizeof (struct AddressSuggestionMessage) + atsi_count * sizeof (struct GNUNET_ATS_Information) 
-    + plugin_addr_len + plugin_name_length;
-  char buf[msize];
+  size_t msize =
+      sizeof (struct AddressSuggestionMessage) +
+      atsi_count * sizeof (struct GNUNET_ATS_Information) + plugin_addr_len +
+      plugin_name_length;
+  char buf[msize] GNUNET_ALIGN;
   struct GNUNET_ATS_Information *atsp;
   char *addrp;
 
   if (my_client == NULL)
     return;
-  GNUNET_STATISTICS_update (GSA_stats,
-                           "# address suggestions made",
-                           1,
-                           GNUNET_NO);
+  GNUNET_STATISTICS_update (GSA_stats, "# address suggestions made", 1,
+                            GNUNET_NO);
   GNUNET_assert (msize < GNUNET_SERVER_MAX_MESSAGE_SIZE);
-  GNUNET_assert (atsi_count < GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_ATS_Information));
-  msg = (struct AddressSuggestionMessage*) buf;
+  GNUNET_assert (atsi_count <
+                 GNUNET_SERVER_MAX_MESSAGE_SIZE /
+                 sizeof (struct GNUNET_ATS_Information));
+  msg = (struct AddressSuggestionMessage *) buf;
   msg->header.size = htons (msize);
   msg->header.type = htons (GNUNET_MESSAGE_TYPE_ATS_ADDRESS_SUGGESTION);
   msg->ats_count = htonl (atsi_count);
@@ -131,15 +139,19 @@ GAS_scheduling_transmit_address_suggestion (const struct GNUNET_PeerIdentity *pe
   msg->session_id = htonl (session_id);
   msg->bandwidth_out = bandwidth_out;
   msg->bandwidth_in = bandwidth_in;
-  atsp = (struct GNUNET_ATS_Information) &msg[1];
+  atsp = (struct GNUNET_ATS_Information *) &msg[1];
   memcpy (atsp, atsi, sizeof (struct GNUNET_ATS_Information) * atsi_count);
-  addrp = (char*) &atsp[atsi_count];
+  addrp = (char *) &atsp[atsi_count];
   memcpy (addrp, plugin_addr, plugin_addr_len);
   strcpy (&addrp[plugin_addr_len], plugin_name);
-  GNUNET_SERVER_notification_context_unicast (nc,
-                                             my_client,
-                                             &msg->header,
-                                             GNUNET_YES);
+
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "ATS sends quota for peer `%s': (in/out) %u/%u\n",
+              GNUNET_i2s (peer), ntohl (bandwidth_in.value__),
+              ntohl (bandwidth_out.value__));
+
+  GNUNET_SERVER_notification_context_unicast (nc, my_client, &msg->header,
+                                              GNUNET_YES);
 }
 
 
@@ -152,18 +164,120 @@ GAS_scheduling_transmit_address_suggestion (const struct GNUNET_PeerIdentity *pe
  */
 void
 GAS_handle_request_address (void *cls, struct GNUNET_SERVER_Client *client,
-                           const struct GNUNET_MessageHeader *message)
+                            const struct GNUNET_MessageHeader *message)
+{
+  const struct RequestAddressMessage *msg =
+      (const struct RequestAddressMessage *) message;
+
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n",
+              "REQUEST_ADDRESS");
+  GNUNET_break (0 == ntohl (msg->reserved));
+  GAS_addresses_request_address (address_handle, &msg->peer);
+  GNUNET_SERVER_receive_done (client, GNUNET_OK);
+}
+
 
+/**
+ * Handle 'request address' messages from clients.
+ *
+ * @param cls unused, NULL
+ * @param client client that sent the request
+ * @param message the request message
+ */
+void
+GAS_handle_request_address_cancel (void *cls,
+                                   struct GNUNET_SERVER_Client *client,
+                                   const struct GNUNET_MessageHeader *message)
 {
-  const struct RequestAddressMessage * msg = (const struct RequestAddressMessage *) message;
+  const struct RequestAddressMessage *msg =
+      (const struct RequestAddressMessage *) message;
 
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "REQUEST_ADDRESS");
-  GNUNET_STATISTICS_update (GSA_stats,
-                           "# address requests received",
-                           1,
-                           GNUNET_NO);
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n",
+              "REQUEST_ADDRESS_CANCEL");
   GNUNET_break (0 == ntohl (msg->reserved));
-  GAS_addresses_request_address (&msg->peer);
+
+  GAS_addresses_request_address_cancel (address_handle, &msg->peer);
+
+  GNUNET_SERVER_receive_done (client, GNUNET_OK);
+}
+
+/**
+ * Handle 'reset backoff' messages from clients.
+ *
+ * @param cls unused, NULL
+ * @param client client that sent the request
+ * @param message the request message
+ */
+void
+GAS_handle_reset_backoff (void *cls,
+                          struct GNUNET_SERVER_Client *client,
+                          const struct GNUNET_MessageHeader *message)
+{
+  const struct ResetBackoffMessage *msg =
+      (const struct ResetBackoffMessage *) message;
+
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n",
+              "RESET_BACKOFF");
+  GNUNET_break (0 == ntohl (msg->reserved));
+  GAS_addresses_handle_backoff_reset (address_handle, &msg->peer);
+  GNUNET_SERVER_receive_done (client, GNUNET_OK);
+}
+
+/**
+ * Handle 'address add' messages from clients.
+ *
+ * @param cls unused, NULL
+ * @param client client that sent the request
+ * @param message the request message
+ */
+void
+GAS_handle_address_add (void *cls, struct GNUNET_SERVER_Client *client,
+                        const struct GNUNET_MessageHeader *message)
+{
+  const struct AddressUpdateMessage *m;
+  const struct GNUNET_ATS_Information *atsi;
+  const char *address;
+  const char *plugin_name;
+  uint16_t address_length;
+  uint16_t plugin_name_length;
+  uint32_t ats_count;
+  uint16_t size;
+
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n",
+              "ADDRESS_ADD");
+  size = ntohs (message->size);
+  if (size < sizeof (struct AddressUpdateMessage))
+  {
+    GNUNET_break (0);
+    GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+    return;
+  }
+  m = (const struct AddressUpdateMessage *) message;
+  ats_count = ntohl (m->ats_count);
+  address_length = ntohs (m->address_length);
+  plugin_name_length = ntohs (m->plugin_name_length);
+  atsi = (const struct GNUNET_ATS_Information *) &m[1];
+  address = (const char *) &atsi[ats_count];
+  if (plugin_name_length != 0)
+    plugin_name = &address[address_length];
+  else
+    plugin_name = "";
+
+  if ((address_length + plugin_name_length +
+       ats_count * sizeof (struct GNUNET_ATS_Information) +
+       sizeof (struct AddressUpdateMessage) != ntohs (message->size)) ||
+      (ats_count >
+       GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_ATS_Information)) ||
+       ((plugin_name_length > 0) && (plugin_name[plugin_name_length - 1] != '\0')))
+  {
+    GNUNET_break (0);
+    GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+    return;
+  }
+  GNUNET_STATISTICS_update (GSA_stats, "# address updates received", 1,
+                            GNUNET_NO);
+  GAS_addresses_add (address_handle, &m->peer, plugin_name, address, address_length,
+                        ntohl (m->session_id), atsi, ats_count);
   GNUNET_SERVER_receive_done (client, GNUNET_OK);
 }
 
@@ -177,9 +291,9 @@ GAS_handle_request_address (void *cls, struct GNUNET_SERVER_Client *client,
  */
 void
 GAS_handle_address_update (void *cls, struct GNUNET_SERVER_Client *client,
-                          const struct GNUNET_MessageHeader *message)
+                           const struct GNUNET_MessageHeader *message)
 {
-  const struct AddressUpdateMessage * m;
+  const struct AddressUpdateMessage *m;
   const struct GNUNET_ATS_Information *atsi;
   const char *address;
   const char *plugin_name;
@@ -188,9 +302,8 @@ GAS_handle_address_update (void *cls, struct GNUNET_SERVER_Client *client,
   uint32_t ats_count;
   uint16_t size;
 
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, 
-             "Received `%s' message\n",
-             "ADDRESS_UPDATE");
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n",
+              "ADDRESS_UPDATE");
   size = ntohs (message->size);
   if (size < sizeof (struct AddressUpdateMessage))
   {
@@ -198,38 +311,32 @@ GAS_handle_address_update (void *cls, struct GNUNET_SERVER_Client *client,
     GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
     return;
   }
-  m = (const struct AddressUpdateMessage*) message;
+  m = (const struct AddressUpdateMessage *) message;
   ats_count = ntohl (m->ats_count);
   address_length = ntohs (m->address_length);
-  plugin_name_length = ntohs (m->plugin_name_length);  
-  atsi = (const struct GNUNET_ATS_Information*) &m[1];
-  address = (const char*) &atsi[ats_count];
+  plugin_name_length = ntohs (m->plugin_name_length);
+  atsi = (const struct GNUNET_ATS_Information *) &m[1];
+  address = (const char *) &atsi[ats_count];
   if (plugin_name_length != 0)
     plugin_name = &address[address_length];
   else
     plugin_name = "";
-  if ( (address_length +
-       plugin_name_length +
-       ats_count * sizeof (struct GNUNET_ATS_Information) +
-       sizeof (struct AddressUpdateMessage) != ntohs (message->size))  ||
-       (ats_count > GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_ATS_Information)) ||
-       (plugin_name[plugin_name_length - 1] != '\0') )
+
+  if ((address_length + plugin_name_length +
+       ats_count * sizeof (struct GNUNET_ATS_Information) +
+       sizeof (struct AddressUpdateMessage) != ntohs (message->size)) ||
+      (ats_count >
+       GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_ATS_Information)) ||
+       ((plugin_name_length > 0) && (plugin_name[plugin_name_length - 1] != '\0')))
   {
     GNUNET_break (0);
     GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
     return;
   }
-  GNUNET_STATISTICS_update (GSA_stats,
-                           "# address updates received",
-                           1,
-                           GNUNET_NO);
-  GAS_addresses_update (&m->peer,
-                       plugin_name,
-                       address,
-                       address_length,
-                       ntohl (m->session_id),
-                       atsi,
-                       ats_count);
+  GNUNET_STATISTICS_update (GSA_stats, "# address updates received", 1,
+                            GNUNET_NO);
+  GAS_addresses_update (address_handle, &m->peer, plugin_name, address, address_length,
+                        ntohl (m->session_id), atsi, ats_count);
   GNUNET_SERVER_receive_done (client, GNUNET_OK);
 }
 
@@ -245,17 +352,16 @@ void
 GAS_handle_address_in_use (void *cls, struct GNUNET_SERVER_Client *client,
                            const struct GNUNET_MessageHeader *message)
 {
-  const struct AddressUseMessage * m;
+  const struct AddressUseMessage *m;
   const char *address;
   const char *plugin_name;
+  int res;
   uint16_t address_length;
   uint16_t plugin_name_length;
 
   uint16_t size;
+  uint16_t in_use;
 
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Received `%s' message\n",
-              "ADDRESS_IN_USE");
   size = ntohs (message->size);
   if (size < sizeof (struct AddressUseMessage))
   {
@@ -263,38 +369,44 @@ GAS_handle_address_in_use (void *cls, struct GNUNET_SERVER_Client *client,
     GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
     return;
   }
-  m = (const struct AddressUseMessage*) message;
+  m = (const struct AddressUseMessage *) message;
 
   address_length = ntohs (m->address_length);
   plugin_name_length = ntohs (m->plugin_name_length);
 
-  address = (const char*) &m[1];
+  address = (const char *) &m[1];
   if (plugin_name_length != 0)
     plugin_name = &address[address_length];
   else
     plugin_name = "";
 
-  if ( (address_length +
-        plugin_name_length +
-        sizeof (struct AddressUseMessage) != ntohs (message->size))  ||
-       (plugin_name[plugin_name_length - 1] != '\0') )
+  if ((address_length + plugin_name_length +
+       sizeof (struct AddressUseMessage) != ntohs (message->size)) ||
+      ((plugin_name_length > 0) &&
+      (plugin_name[plugin_name_length - 1] != '\0')))
   {
     GNUNET_break (0);
     GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
     return;
   }
 
+  in_use = ntohs (m->in_use);
+  res = GAS_addresses_in_use (address_handle,
+                              &m->peer,
+                              plugin_name,
+                              address,
+                              address_length,
+                              ntohl (m->session_id),
+                              in_use);
+
+  if (res == GNUNET_OK)
+    GNUNET_SERVER_receive_done (client, GNUNET_OK);
+  else
+  {
+    GNUNET_break (0);
+    GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+  }
 
-/*
-  GAS_addresses_update (&m->peer,
-                        plugin_name,
-                        address,
-                        address_length,
-                        ntohl (m->session_id),
-                        atsi,
-                        ats_count);
-*/
-  GNUNET_SERVER_receive_done (client, GNUNET_OK);
 }
 
 /**
@@ -306,10 +418,9 @@ GAS_handle_address_in_use (void *cls, struct GNUNET_SERVER_Client *client,
  */
 void
 GAS_handle_address_destroyed (void *cls, struct GNUNET_SERVER_Client *client,
-                             const struct GNUNET_MessageHeader *message)
-
+                              const struct GNUNET_MessageHeader *message)
 {
-  const struct AddressDestroyedMessage * m;
+  const struct AddressDestroyedMessage *m;
   struct SessionReleaseMessage srm;
   const char *address;
   const char *plugin_name;
@@ -317,60 +428,51 @@ GAS_handle_address_destroyed (void *cls, struct GNUNET_SERVER_Client *client,
   uint16_t plugin_name_length;
   uint16_t size;
 
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-             "Received `%s' message of size %u %u\n",
-             "ADDRESS_DESTROYED", ntohs (message->size), sizeof (struct AddressDestroyedMessage));
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message of size %u %u\n",
+              "ADDRESS_DESTROYED", ntohs (message->size),
+              sizeof (struct AddressDestroyedMessage));
   size = ntohs (message->size);
-  if ( (size < sizeof (struct AddressDestroyedMessage)) ||
-       (client != my_client) )
+  if ((size < sizeof (struct AddressDestroyedMessage)) || (client != my_client))
   {
     GNUNET_break (0);
     GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
     return;
   }
-  m = (const struct AddressDestroyedMessage*) message;
+  m = (const struct AddressDestroyedMessage *) message;
   GNUNET_break (0 == ntohl (m->reserved));
   address_length = ntohs (m->address_length);
-  plugin_name_length = ntohs (m->plugin_name_length);  
-  address = (const char*) &m[1];
+  plugin_name_length = ntohs (m->plugin_name_length);
+  address = (const char *) &m[1];
   if (plugin_name_length != 0)
     plugin_name = &address[address_length];
   else
     plugin_name = "";
-  if ( (address_length +
-       plugin_name_length +
-       sizeof (struct AddressDestroyedMessage) != ntohs (message->size)))
+  if ((address_length + plugin_name_length +
+       sizeof (struct AddressDestroyedMessage) != ntohs (message->size)))
   {
     GNUNET_break (0);
     GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
     return;
-  }  
-  if ( (plugin_name_length != 0) &&
-       (plugin_name[plugin_name_length - 1] != '\0') )
+  }
+  if ((plugin_name_length == 0) ||
+      (plugin_name[plugin_name_length - 1] != '\0'))
   {
     GNUNET_break (0);
     GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
     return;
   }
-  GNUNET_STATISTICS_update (GSA_stats,
-                           "# addresses destroyed",
-                           1,
-                           GNUNET_NO);
-  GAS_addresses_destroy (&m->peer,
-                        plugin_name,
-                        address,
-                        address_length,
-                        ntohl (m->session_id));
+  GNUNET_STATISTICS_update (GSA_stats, "# addresses destroyed", 1, GNUNET_NO);
+  GAS_addresses_destroy (address_handle, &m->peer, plugin_name,
+                         address, address_length,
+                         ntohl (m->session_id));
   if (0 != ntohl (m->session_id))
   {
     srm.header.type = ntohs (GNUNET_MESSAGE_TYPE_ATS_SESSION_RELEASE);
     srm.header.size = ntohs (sizeof (struct SessionReleaseMessage));
     srm.session_id = m->session_id;
     srm.peer = m->peer;
-    GNUNET_SERVER_notification_context_unicast (nc,
-                                               client,
-                                               &srm.header,
-                                               GNUNET_NO);
+    GNUNET_SERVER_notification_context_unicast (nc, client, &srm.header,
+                                                GNUNET_NO);
   }
   GNUNET_SERVER_receive_done (client, GNUNET_OK);
 }
@@ -380,10 +482,12 @@ GAS_handle_address_destroyed (void *cls, struct GNUNET_SERVER_Client *client,
  * Initialize scheduling subsystem.
  *
  * @param server handle to our server
+ * @param ah the address handle to use
  */
 void
-GAS_scheduling_init (struct GNUNET_SERVER_Handle *server)                   
+GAS_scheduling_init (struct GNUNET_SERVER_Handle *server, struct GAS_Addresses_Handle *ah)
 {
+  address_handle = ah;
   nc = GNUNET_SERVER_notification_context_create (server, 128);
 }
 
@@ -394,8 +498,13 @@ GAS_scheduling_init (struct GNUNET_SERVER_Handle *server)
 void
 GAS_scheduling_done ()
 {
+  if (NULL != my_client)
+  {
+    my_client = NULL;
+  }
   GNUNET_SERVER_notification_context_destroy (nc);
   nc = NULL;
+
 }