/*
This file is part of GNUnet.
- (C) 2013 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2013 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
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.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
{
GNUNET_break (0);
LOG (GNUNET_ERROR_TYPE_WARNING,
- "Port %u by client %p was not registered.\n",
- key, value);
+ "Port %u by client %p was not registered.\n",
+ key, value);
}
return GNUNET_OK;
}
+/**
+ * Iterator for deleting each channel whose client endpoint disconnected.
+ *
+ * @param cls Closure (client that has disconnected).
+ * @param key The local channel id (used to access the hashmap).
+ * @param value The value stored at the key (channel to destroy).
+ *
+ * @return GNUNET_OK, keep iterating.
+ */
+static int
+channel_destroy_iterator (void *cls,
+ uint32_t key,
+ void *value)
+{
+ struct CadetChannel *ch = value;
+ struct CadetClient *c = cls;
-/******************************************************************************/
-/******************************** HANDLES ***********************************/
-/******************************************************************************/
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ " Channel %s destroy, due to client %s shutdown.\n",
+ GCCH_2s (ch), GML_2s (c));
+
+ GCCH_handle_local_destroy (ch, c, key < GNUNET_CADET_LOCAL_CHANNEL_ID_SERV);
+ return GNUNET_OK;
+}
/**
- * Handler for client connection.
+ * Unregister data and free memory for a client.
*
- * @param cls Closure (unused).
- * @param client Client handler.
+ * @param c Client to destroy. No longer valid after call.
*/
static void
-handle_client_connect (void *cls, struct GNUNET_SERVER_Client *client)
+client_destroy (struct CadetClient *c)
+{
+ LOG (GNUNET_ERROR_TYPE_INFO, " client destroy: %p/%u\n", c, c->id);
+ GNUNET_SERVER_client_drop (c->handle);
+ c->shutting_down = GNUNET_YES;
+
+ if (NULL != c->own_channels)
+ {
+ GNUNET_CONTAINER_multihashmap32_iterate (c->own_channels,
+ &channel_destroy_iterator, c);
+ GNUNET_CONTAINER_multihashmap32_destroy (c->own_channels);
+ }
+ if (NULL != c->incoming_channels)
+ {
+ GNUNET_CONTAINER_multihashmap32_iterate (c->incoming_channels,
+ &channel_destroy_iterator, c);
+ GNUNET_CONTAINER_multihashmap32_destroy (c->incoming_channels);
+ }
+ if (NULL != c->ports)
+ {
+ GNUNET_CONTAINER_multihashmap32_iterate (c->ports,
+ &client_release_ports, c);
+ GNUNET_CONTAINER_multihashmap32_destroy (c->ports);
+ }
+
+ GNUNET_CONTAINER_DLL_remove (clients_head, clients_tail, c);
+ GNUNET_STATISTICS_update (stats, "# clients", -1, GNUNET_NO);
+ GNUNET_SERVER_client_set_user_context (c->handle, NULL);
+ GNUNET_free (c);
+}
+
+/**
+ * Create a client record, register data and initialize memory.
+ *
+ * @param client Client's handle.
+ */
+static struct CadetClient *
+client_new (struct GNUNET_SERVER_Client *client)
{
struct CadetClient *c;
- LOG (GNUNET_ERROR_TYPE_DEBUG, "client connected: %p\n", client);
- if (NULL == client)
- return;
+ GNUNET_SERVER_client_keep (client);
+ GNUNET_SERVER_notification_context_add (nc, client);
+
c = GNUNET_new (struct CadetClient);
c->handle = client;
c->id = next_client_id++; /* overflow not important: just for debug */
c->next_chid = GNUNET_CADET_LOCAL_CHANNEL_ID_SERV;
- GNUNET_SERVER_client_keep (client);
+
+ c->own_channels = GNUNET_CONTAINER_multihashmap32_create (32);
+ c->incoming_channels = GNUNET_CONTAINER_multihashmap32_create (32);
+
GNUNET_SERVER_client_set_user_context (client, c);
GNUNET_CONTAINER_DLL_insert (clients_head, clients_tail, c);
+ GNUNET_STATISTICS_update (stats, "# clients", +1, GNUNET_NO);
+
+ LOG (GNUNET_ERROR_TYPE_INFO, " client created: %p/%u\n", c, c->id);
+
+ return c;
}
+/******************************************************************************/
+/******************************** HANDLES ***********************************/
+/******************************************************************************/
+
/**
- * Iterator for deleting each channel whose client endpoint disconnected.
- *
- * @param cls Closure (client that has disconnected).
- * @param key The local channel id (used to access the hashmap).
- * @param value The value stored at the key (channel to destroy).
+ * Handler for client connection.
*
- * @return GNUNET_OK, keep iterating.
+ * @param cls Closure (unused).
+ * @param client Client handler.
*/
-static int
-channel_destroy_iterator (void *cls,
- uint32_t key,
- void *value)
+static void
+handle_client_connect (void *cls, struct GNUNET_SERVER_Client *client)
{
- struct CadetChannel *ch = value;
- struct CadetClient *c = cls;
-
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- " Channel %s destroy, due to client %s shutdown.\n",
- GCCH_2s (ch), GML_2s (c));
+ LOG (GNUNET_ERROR_TYPE_INFO, "Client connected: %p\n", client);
+ if (NULL == client)
+ return;
- GCCH_handle_local_destroy (ch, c, key < GNUNET_CADET_LOCAL_CHANNEL_ID_SERV);
- return GNUNET_OK;
+ (void) client_new (client);
}
+
/**
* Handler for client disconnection
*
{
struct CadetClient *c;
- LOG (GNUNET_ERROR_TYPE_DEBUG, "client disconnected: %p\n", client);
- if (client == NULL)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG, " (SERVER DOWN)\n");
- return;
- }
+ LOG (GNUNET_ERROR_TYPE_INFO, "Client disconnected: %p\n", client);
c = GML_client_get (client);
if (NULL != c)
{
LOG (GNUNET_ERROR_TYPE_DEBUG, "matching client found (%u, %p)\n",
c->id, c);
- GNUNET_SERVER_client_drop (c->handle);
- c->shutting_down = GNUNET_YES;
- if (NULL != c->own_channels)
- {
- GNUNET_CONTAINER_multihashmap32_iterate (c->own_channels,
- &channel_destroy_iterator, c);
- GNUNET_CONTAINER_multihashmap32_destroy (c->own_channels);
- }
-
- if (NULL != c->incoming_channels)
- {
- GNUNET_CONTAINER_multihashmap32_iterate (c->incoming_channels,
- &channel_destroy_iterator, c);
- GNUNET_CONTAINER_multihashmap32_destroy (c->incoming_channels);
- }
-
- if (NULL != c->ports)
- {
- GNUNET_CONTAINER_multihashmap32_iterate (c->ports,
- &client_release_ports, c);
- GNUNET_CONTAINER_multihashmap32_destroy (c->ports);
- }
- GNUNET_CONTAINER_DLL_remove (clients_head, clients_tail, c);
- GNUNET_STATISTICS_update (stats, "# clients", -1, GNUNET_NO);
- LOG (GNUNET_ERROR_TYPE_DEBUG, " client free (%p)\n", c);
- GNUNET_free (c);
+ client_destroy (c);
}
else
{
- LOG (GNUNET_ERROR_TYPE_WARNING, " context NULL!\n");
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " disconnecting client's context NULL\n");
}
- LOG (GNUNET_ERROR_TYPE_DEBUG, "done!\n");
return;
}
unsigned int i;
LOG (GNUNET_ERROR_TYPE_DEBUG, "\n");
- LOG (GNUNET_ERROR_TYPE_DEBUG, "new client connected %p\n", client);
+ LOG (GNUNET_ERROR_TYPE_INFO, "new client registering %p\n", client);
/* Check data sanity */
- size = ntohs (message->size) - sizeof (struct GNUNET_CADET_ClientConnect);
- cc_msg = (struct GNUNET_CADET_ClientConnect *) message;
+ size = ntohs (message->size);
+ if (size < sizeof (struct GNUNET_CADET_ClientConnect))
+ {
+ GNUNET_break (0);
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ return;
+ }
+ size -= sizeof (struct GNUNET_CADET_ClientConnect); /* Array size */
if (0 != (size % sizeof (uint32_t)))
{
GNUNET_break (0);
GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
return;
}
- size /= sizeof (uint32_t);
+ size /= sizeof (uint32_t); /* Number of ports */
+ cc_msg = (struct GNUNET_CADET_ClientConnect *) message;
- /* Initialize new client structure */
+ /* Retrieve client structure */
c = GNUNET_SERVER_client_get_user_context (client, struct CadetClient);
- LOG (GNUNET_ERROR_TYPE_DEBUG, " client id %u\n", c->id);
- LOG (GNUNET_ERROR_TYPE_DEBUG, " client has %u ports\n", size);
+ if (NULL == c)
+ {
+ GNUNET_break (0);
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ return;
+ }
+
+ LOG (GNUNET_ERROR_TYPE_INFO, " client %u has %u ports\n", c-> id, size);
if (size > 0)
{
uint32_t u32;
for (i = 0; i < size; i++)
{
u32 = ntohl (p[i]);
- LOG (GNUNET_ERROR_TYPE_DEBUG, " port: %u\n", u32);
+ LOG (GNUNET_ERROR_TYPE_INFO, " port: %u\n", u32);
/* store in client's hashmap */
GNUNET_CONTAINER_multihashmap32_put (c->ports, u32, c,
}
}
- c->own_channels = GNUNET_CONTAINER_multihashmap32_create (32);
- c->incoming_channels = GNUNET_CONTAINER_multihashmap32_create (32);
- GNUNET_SERVER_notification_context_add (nc, client);
- GNUNET_STATISTICS_update (stats, "# clients", 1, GNUNET_NO);
-
GNUNET_SERVER_receive_done (client, GNUNET_OK);
- LOG (GNUNET_ERROR_TYPE_DEBUG, "new client processed\n");
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "new regitering processed\n");
}
handle_data (void *cls, struct GNUNET_SERVER_Client *client,
const struct GNUNET_MessageHeader *message)
{
+ const struct GNUNET_MessageHeader *payload;
struct GNUNET_CADET_LocalData *msg;
struct CadetClient *c;
struct CadetChannel *ch;
CADET_ChannelNumber chid;
- size_t size;
+ size_t message_size;
+ size_t payload_size;
+ size_t payload_claimed_size;
int fwd;
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Got data from a client!\n");
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "\n");
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "\n");
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Got data from a client\n");
/* Sanity check for client registration */
if (NULL == (c = GML_client_get (client)))
GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
return;
}
- LOG (GNUNET_ERROR_TYPE_DEBUG, " by client %u\n", c->id);
-
- msg = (struct GNUNET_CADET_LocalData *) message;
/* Sanity check for message size */
- size = ntohs (message->size) - sizeof (struct GNUNET_CADET_LocalData);
- if (size < sizeof (struct GNUNET_MessageHeader))
+ message_size = ntohs (message->size);
+ if (sizeof (struct GNUNET_CADET_LocalData)
+ + sizeof (struct GNUNET_MessageHeader) > message_size
+ || GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE < message_size)
{
GNUNET_break (0);
GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
return;
}
- /* Channel exists? */
+ /* Sanity check for payload size */
+ payload_size = message_size - sizeof (struct GNUNET_CADET_LocalData);
+ msg = (struct GNUNET_CADET_LocalData *) message;
+ payload = (struct GNUNET_MessageHeader *) &msg[1];
+ payload_claimed_size = ntohs (payload->size);
+ if (sizeof (struct GNUNET_MessageHeader) > payload_claimed_size
+ || GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE < payload_claimed_size
+ || payload_claimed_size > payload_size)
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "client claims to send %u bytes in %u payload\n",
+ payload_claimed_size, payload_size);
+ GNUNET_break (0);
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ return;
+ }
+
chid = ntohl (msg->id);
- LOG (GNUNET_ERROR_TYPE_DEBUG, " on channel %X\n", chid);
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " %u bytes (%u payload) by client %u\n",
+ payload_size, payload_claimed_size, c->id);
+
+ /* Channel exists? */
fwd = chid < GNUNET_CADET_LOCAL_CHANNEL_ID_SERV;
ch = GML_channel_get (c, chid);
if (NULL == ch)
return;
}
- if (GNUNET_OK !=
- GCCH_handle_local_data (ch, c,
- (struct GNUNET_MessageHeader *)&msg[1], fwd))
+ if (GNUNET_OK != GCCH_handle_local_data (ch, c, fwd, payload, payload_size))
{
GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
return;
}
+/**
+ * Iterator over all paths of a peer to build an InfoPeer message.
+ *
+ * Message contains blocks of peers, first not included.
+ *
+ * @param cls Closure (message to build).
+ * @param peer Peer this path is towards.
+ * @param path Path itself
+ * @return #GNUNET_YES if should keep iterating.
+ * #GNUNET_NO otherwise.
+ */
+static int
+path_info_iterator (void *cls,
+ struct CadetPeer *peer,
+ struct CadetPeerPath *path)
+{
+ struct GNUNET_CADET_LocalInfoPeer *resp = cls;
+ struct GNUNET_PeerIdentity *id;
+ uint16_t msg_size;
+ uint16_t path_size;
+ unsigned int i;
+
+ msg_size = ntohs (resp->header.size);
+ path_size = sizeof (struct GNUNET_PeerIdentity) * (path->length - 1);
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Info Path %u\n", path->length);
+ if (msg_size + path_size > UINT16_MAX)
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING, "path too long for info message\n");
+ return GNUNET_NO;
+ }
+
+ i = msg_size - sizeof (struct GNUNET_CADET_LocalInfoPeer);
+ i = i / sizeof (struct GNUNET_PeerIdentity);
+
+ /* Set id to the address of the first free peer slot. */
+ id = (struct GNUNET_PeerIdentity *) &resp[1];
+ id = &id[i];
+
+ /* Don't copy first peers.
+ * First peer is always the local one.
+ * Last peer is always the destination (leave as 0, EOL).
+ */
+ for (i = 0; i < path->length - 1; i++)
+ {
+ GNUNET_PEER_resolve (path->peers[i + 1], &id[i]);
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " %s\n", GNUNET_i2s (&id[i]));
+ }
+
+ resp->header.size = htons (msg_size + path_size);
+
+ return GNUNET_YES;
+}
+
+
/**
* Handler for client's INFO PEERS request.
*
}
+/**
+ * Handler for client's SHOW_PEER request.
+ *
+ * @param cls Closure (unused).
+ * @param client Identification of the client.
+ * @param message The actual message.
+ */
+void
+handle_show_peer (void *cls, struct GNUNET_SERVER_Client *client,
+ const struct GNUNET_MessageHeader *message)
+{
+ const struct GNUNET_CADET_LocalInfo *msg;
+ struct GNUNET_CADET_LocalInfoPeer *resp;
+ struct CadetPeer *p;
+ struct CadetClient *c;
+ unsigned char cbuf[64 * 1024];
+
+ /* Sanity check for client registration */
+ if (NULL == (c = GML_client_get (client)))
+ {
+ GNUNET_break (0);
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ return;
+ }
+
+ msg = (struct GNUNET_CADET_LocalInfo *) message;
+ resp = (struct GNUNET_CADET_LocalInfoPeer *) cbuf;
+ LOG (GNUNET_ERROR_TYPE_INFO,
+ "Received peer info request from client %u for peer %s\n",
+ c->id, GNUNET_i2s_full (&msg->peer));
+
+ resp->header.type = htons (GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_PEER);
+ resp->header.size = htons (sizeof (struct GNUNET_CADET_LocalInfoPeer));
+ resp->destination = msg->peer;
+ p = GCP_get (&msg->peer, GNUNET_NO);
+ if (NULL == p)
+ {
+ /* We don't know the peer */
+
+ LOG (GNUNET_ERROR_TYPE_INFO, "Peer %s unknown\n",
+ GNUNET_i2s_full (&msg->peer));
+ resp->paths = htons (0);
+ resp->tunnel = htons (NULL != GCP_get_tunnel (p));
+
+ GNUNET_SERVER_notification_context_unicast (nc, client,
+ &resp->header,
+ GNUNET_NO);
+ GNUNET_SERVER_receive_done (client, GNUNET_OK);
+ return;
+ }
+
+ resp->paths = htons (GCP_count_paths (p));
+ resp->tunnel = htons (NULL != GCP_get_tunnel (p));
+ GCP_iterate_paths (p, &path_info_iterator, resp);
+
+ GNUNET_SERVER_notification_context_unicast (nc, c->handle,
+ &resp->header, GNUNET_NO);
+
+ LOG (GNUNET_ERROR_TYPE_INFO, "Show peer request from client %u completed.\n");
+ GNUNET_SERVER_receive_done (client, GNUNET_OK);
+}
+
+
/**
* Iterator over all tunnels to send a monitoring client info about each tunnel.
*
msg.header.type = htons (GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_TUNNELS);
msg.destination = *peer;
msg.channels = htonl (GCT_count_channels (t));
- msg.connections = htonl (GCT_count_connections (t));
+ msg.connections = htonl (GCT_count_any_connections (t));
msg.cstate = htons ((uint16_t) GCT_get_cstate (t));
msg.estate = htons ((uint16_t) GCT_get_estate (t));
struct GNUNET_HashCode *h = (struct GNUNET_HashCode *) &msg[1];
CADET_ChannelNumber *chn = (CADET_ChannelNumber *) &h[msg->connections];
- chn[msg->channels] = GCCH_get_id (ch);
+ chn[msg->channels] = htonl (GCCH_get_id (ch));
msg->channels++;
}
}
msg = (struct GNUNET_CADET_LocalInfo *) message;
- LOG (GNUNET_ERROR_TYPE_INFO,
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
"Received tunnel info request from client %u for tunnel %s\n",
c->id, GNUNET_i2s_full(&msg->peer));
- t = GCP_get_tunnel (GCP_get (&msg->peer));
+ t = GCP_get_tunnel (GCP_get (&msg->peer, GNUNET_NO));
if (NULL == t)
{
/* We don't know the tunnel */
/* Initialize context */
ch_n = GCT_count_channels (t);
- c_n = GCT_count_connections (t);
+ c_n = GCT_count_any_connections (t);
size = sizeof (struct GNUNET_CADET_LocalInfoTunnel);
size += c_n * sizeof (struct GNUNET_CADET_Hash);
&resp->header, GNUNET_NO);
GNUNET_free (resp);
- LOG (GNUNET_ERROR_TYPE_INFO,
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
"Show tunnel request from client %u completed. %u conn, %u ch\n",
c->id, c_n, ch_n);
GNUNET_SERVER_receive_done (client, GNUNET_OK);
sizeof (struct GNUNET_CADET_LocalAck)},
{&handle_get_peers, NULL, GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_PEERS,
sizeof (struct GNUNET_MessageHeader)},
+ {&handle_show_peer, NULL, GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_PEER,
+ sizeof (struct GNUNET_CADET_LocalInfo)},
{&handle_get_tunnels, NULL, GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_TUNNELS,
sizeof (struct GNUNET_MessageHeader)},
{&handle_show_tunnel, NULL, GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_TUNNEL,
void
GML_shutdown (void)
{
+ struct CadetClient *c;
+
+ for (c = clients_head; NULL != clients_head; c = clients_head)
+ client_destroy (c);
+
if (nc != NULL)
{
GNUNET_SERVER_notification_context_destroy (nc);
nc = NULL;
}
+
}
{
static char buf[32];
- sprintf (buf, "%u", c->id);
+ SPRINTF (buf, "%u", c->id);
return buf;
}
projects / oweals / gnunet.git / blobdiff