/*
This file is part of GNUnet
- (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Christian Grothoff (and other contributing authors)
+ (C) 2002--2012 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
*/
struct GNUNET_NAT_Handle *nat;
- struct GNUNET_CONTAINER_MultiHashMap * sessionmap;
+ /**
+ * Map from peer identities to sessions for the given peer.
+ */
+ struct GNUNET_CONTAINER_MultiHashMap *sessionmap;
/**
* Handle to the network service.
static void
start_session_timeout (struct Session *s);
+
/**
* Increment session timeout due to activity
*/
static void
reschedule_session_timeout (struct Session *s);
+
/**
* Cancel timeout
*/
static const char *
tcp_address_to_string (void *cls, const void *addr, size_t addrlen);
+
static unsigned int sessions;
-static void inc_sessions (struct Plugin *plugin, struct Session *session, int line)
+
+static void
+inc_sessions (struct Plugin *plugin, struct Session *session, int line)
{
- sessions ++;
+ sessions++;
unsigned int size = GNUNET_CONTAINER_multihashmap_size(plugin->sessionmap);
if (sessions != size)
LOG (GNUNET_ERROR_TYPE_DEBUG, "Inconsistent sessions %u <-> session map size: %u\n",
tcp_address_to_string (NULL, session->addr, session->addrlen));
}
-static void dec_sessions (struct Plugin *plugin, struct Session *session, int line)
+
+static void
+dec_sessions (struct Plugin *plugin, struct Session *session, int line)
{
GNUNET_assert (sessions > 0);
unsigned int size = GNUNET_CONTAINER_multihashmap_size(plugin->sessionmap);
- sessions --;
+ sessions--;
if (sessions != size)
LOG (GNUNET_ERROR_TYPE_DEBUG, "Inconsistent sessions %u <-> session map size: %u\n",
sessions, size);
int af;
uint16_t port;
- if (addrlen == sizeof (struct IPv6TcpAddress))
+ switch (addrlen)
{
+ case sizeof (struct IPv6TcpAddress):
t6 = addr;
af = AF_INET6;
port = ntohs (t6->t6_port);
memcpy (&a6, &t6->ipv6_addr, sizeof (a6));
sb = &a6;
- }
- else if (addrlen == sizeof (struct IPv4TcpAddress))
- {
+ break;
+ case sizeof (struct IPv4TcpAddress):
t4 = addr;
af = AF_INET;
port = ntohs (t4->t4_port);
memcpy (&a4, &t4->ipv4_addr, sizeof (a4));
sb = &a4;
- }
- else
- {
+ break;
+ default:
LOG (GNUNET_ERROR_TYPE_ERROR,
_("Unexpected address length: %u bytes\n"),
(unsigned int) addrlen);
GNUNET_break (0);
return GNUNET_SYSERR;
}
-
if ('\0' != addr[addrlen - 1])
{
GNUNET_break (0);
return GNUNET_SYSERR;
}
-
if (strlen (addr) != addrlen - 1)
{
GNUNET_break (0);
return GNUNET_SYSERR;
}
-
- int ret = GNUNET_STRINGS_to_address_ip (addr, strlen (addr),
- &socket_address);
-
- if (ret != GNUNET_OK)
+ if (GNUNET_OK !=
+ GNUNET_STRINGS_to_address_ip (addr, strlen (addr),
+ &socket_address))
{
GNUNET_break (0);
return GNUNET_SYSERR;
}
-
- if (socket_address.ss_family == AF_INET)
- {
- struct IPv4TcpAddress *t4;
- struct sockaddr_in *in4 = (struct sockaddr_in *) &socket_address;
- t4 = GNUNET_malloc (sizeof (struct IPv4TcpAddress));
- t4->ipv4_addr = in4->sin_addr.s_addr;
- t4->t4_port = in4->sin_port;
- *buf = t4;
- *added = sizeof (struct IPv4TcpAddress);
- return GNUNET_OK;
- }
- else if (socket_address.ss_family == AF_INET6)
+ switch (socket_address.ss_family)
{
- struct IPv6TcpAddress *t6;
- struct sockaddr_in6 *in6 = (struct sockaddr_in6 *) &socket_address;
- t6 = GNUNET_malloc (sizeof (struct IPv6TcpAddress));
- t6->ipv6_addr = in6->sin6_addr;
- t6->t6_port = in6->sin6_port;
- *buf = t6;
- *added = sizeof (struct IPv6TcpAddress);
- return GNUNET_OK;
+ case AF_INET:
+ {
+ struct IPv4TcpAddress *t4;
+ struct sockaddr_in *in4 = (struct sockaddr_in *) &socket_address;
+
+ t4 = GNUNET_malloc (sizeof (struct IPv4TcpAddress));
+ t4->ipv4_addr = in4->sin_addr.s_addr;
+ t4->t4_port = in4->sin_port;
+ *buf = t4;
+ *added = sizeof (struct IPv4TcpAddress);
+ return GNUNET_OK;
+ }
+ case AF_INET6:
+ {
+ struct IPv6TcpAddress *t6;
+ struct sockaddr_in6 *in6 = (struct sockaddr_in6 *) &socket_address;
+ t6 = GNUNET_malloc (sizeof (struct IPv6TcpAddress));
+ t6->ipv6_addr = in6->sin6_addr;
+ t6->t6_port = in6->sin6_port;
+ *buf = t6;
+ *added = sizeof (struct IPv6TcpAddress);
+ return GNUNET_OK;
+ }
+ default:
+ return GNUNET_SYSERR;
}
- return GNUNET_SYSERR;
}
static int
session_lookup_by_client_it (void *cls,
- const GNUNET_HashCode * key,
- void *value)
+ const struct GNUNET_HashCode * key,
+ void *value)
{
struct SessionClientCtx *sc_ctx = cls;
struct Session *s = value;
*/
static struct Session *
lookup_session_by_client (struct Plugin *plugin,
- const struct GNUNET_SERVER_Client *client)
+ const struct GNUNET_SERVER_Client *client)
{
struct SessionClientCtx sc_ctx;
*
* @param plugin the plugin
* @param target peer to connect to
- * @param client client to use
+ * @param client client to use, reference counter must have already been increased
* @param is_nat this a NAT session, we should wait for a client to
* connect to us from an address, then assign that to
* the session
struct PendingMessage *pm;
struct WelcomeMessage welcome;
- if (is_nat != GNUNET_YES)
- GNUNET_assert (client != NULL);
+ if (GNUNET_YES != is_nat)
+ GNUNET_assert (NULL != client);
else
- GNUNET_assert (client == NULL);
+ GNUNET_assert (NULL == client);
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Creating new session for peer `%4s'\n",
pm->message_size, GNUNET_NO);
GNUNET_CONTAINER_DLL_insert (ret->pending_messages_head,
ret->pending_messages_tail, pm);
- if (is_nat != GNUNET_YES)
+ if (GNUNET_YES != is_nat)
{
GNUNET_STATISTICS_update (plugin->env->stats,
gettext_noop ("# TCP sessions active"), 1,
char *cbuf;
size_t ret;
- GNUNET_assert (session != NULL);
+ GNUNET_assert (NULL != session);
session->transmit_handle = NULL;
plugin = session->plugin;
- if (buf == NULL)
+ if (NULL == buf)
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Timeout trying to transmit to peer `%4s', discarding message queue.\n",
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Disconnecting session of peer `%s' address `%s'\n",
GNUNET_i2s (&session->target),
- tcp_address_to_string(NULL, session->addr, session->addrlen));
+ tcp_address_to_string (NULL, session->addr, session->addrlen));
stop_session_timeout (session);
- if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove(plugin->sessionmap, &session->target.hashPubKey, session))
+ if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove (plugin->sessionmap, &session->target.hashPubKey, session))
{
- GNUNET_STATISTICS_update (session->plugin->env->stats,
- gettext_noop ("# TCP sessions active"), -1,
- GNUNET_NO);
- dec_sessions (plugin, session, __LINE__);
+ GNUNET_STATISTICS_update (session->plugin->env->stats,
+ gettext_noop ("# TCP sessions active"), -1,
+ GNUNET_NO);
+ dec_sessions (plugin, session, __LINE__);
}
- else GNUNET_assert (GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove(plugin->nat_wait_conns, &session->target.hashPubKey, session));
+ else GNUNET_assert (GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove (plugin->nat_wait_conns, &session->target.hashPubKey, session));
/* clean up state */
if (session->transmit_handle != NULL)
session->plugin->env->session_end (session->plugin->env->cls,
&session->target, session);
- if (session->nat_connection_timeout != GNUNET_SCHEDULER_NO_TASK)
+ if (GNUNET_SCHEDULER_NO_TASK != session->nat_connection_timeout)
{
GNUNET_SCHEDULER_cancel (session->nat_connection_timeout);
session->nat_connection_timeout = GNUNET_SCHEDULER_NO_TASK;
if (session->receive_delay_task != GNUNET_SCHEDULER_NO_TASK)
{
GNUNET_SCHEDULER_cancel (session->receive_delay_task);
- if (session->client != NULL)
+ if (NULL != session->client)
GNUNET_SERVER_receive_done (session->client, GNUNET_SYSERR);
}
- if (session->client != NULL)
+ if (NULL != session->client)
{
+ GNUNET_SERVER_client_disconnect (session->client);
GNUNET_SERVER_client_drop (session->client);
session->client = NULL;
}
-
-
GNUNET_free_non_null (session->addr);
GNUNET_assert (NULL == session->transmit_handle);
GNUNET_free (session);
struct Plugin * plugin = cls;
struct PendingMessage *pm;
- GNUNET_assert (plugin != NULL);
- GNUNET_assert (session != NULL);
+ GNUNET_assert (NULL != plugin);
+ GNUNET_assert (NULL != session);
/* create new message entry */
pm = GNUNET_malloc (sizeof (struct PendingMessage) + msgbuf_size);
}
else
{
- if (cont != NULL)
+ if (NULL != cont)
cont (cont_cls, &session->target, GNUNET_SYSERR);
GNUNET_break (0);
GNUNET_free (pm);
}
}
+
struct SessionItCtx
{
- void * addr;
+ void *addr;
size_t addrlen;
- struct Session * result;
+ struct Session *result;
};
+
static int
session_lookup_it (void *cls,
- const GNUNET_HashCode * key,
+ const struct GNUNET_HashCode *key,
void *value)
{
struct SessionItCtx * si_ctx = cls;
*/
static struct Session *
tcp_plugin_get_session (void *cls,
- const struct GNUNET_HELLO_Address *address)
+ const struct GNUNET_HELLO_Address *address)
{
struct Plugin * plugin = cls;
struct Session * session = NULL;
static int
session_disconnect_it (void *cls,
- const GNUNET_HashCode * key,
+ const struct GNUNET_HashCode * key,
void *value)
{
struct Session *session = value;
return GNUNET_YES;
}
+
/**
* Function that can be called to force a disconnect from the
* specified neighbour. This should also cancel all previously
session->nat_connection_timeout = GNUNET_SCHEDULER_NO_TASK;
}
- GNUNET_assert (GNUNET_CONTAINER_multihashmap_remove
- (plugin->nat_wait_conns,
- &tcp_nat_probe->clientIdentity.hashPubKey,
- session) == GNUNET_YES);
if (GNUNET_OK != GNUNET_SERVER_client_get_address (client, &vaddr, &alen))
{
GNUNET_break (0);
- GNUNET_free (session);
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ disconnect_session (session);
return;
}
-
- GNUNET_SERVER_client_keep (client);
- session->client = client;
+ GNUNET_assert (GNUNET_CONTAINER_multihashmap_remove
+ (plugin->nat_wait_conns,
+ &tcp_nat_probe->clientIdentity.hashPubKey,
+ session) == GNUNET_YES);
+ GNUNET_CONTAINER_multihashmap_put(plugin->sessionmap,
+ &session->target.hashPubKey, session,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
session->last_activity = GNUNET_TIME_absolute_get ();
session->inbound = GNUNET_NO;
LOG (GNUNET_ERROR_TYPE_DEBUG,
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Bad address for incoming connection!\n");
GNUNET_free (vaddr);
-
- GNUNET_SERVER_client_drop (client);
- GNUNET_free (session);
GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ disconnect_session (session);
return;
}
GNUNET_free (vaddr);
-
- GNUNET_CONTAINER_multihashmap_put(plugin->sessionmap, &session->target.hashPubKey, session, GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
+ GNUNET_break (NULL == session->client);
+ GNUNET_SERVER_client_keep (client);
+ session->client = client;
inc_sessions (plugin, session, __LINE__);
GNUNET_STATISTICS_update (plugin->env->stats,
gettext_noop ("# TCP sessions active"), 1,
struct Session *s = cls;
s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Session %p was idle for %llu, disconnecting\n",
- s, GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
-
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Session %p was idle for %llu, disconnecting\n",
+ s, GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
/* call session destroy function */
disconnect_session(s);
-
}
+
/**
* Start session timeout
*/
{
GNUNET_assert (NULL != s);
GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == s->timeout_task);
-
s->timeout_task = GNUNET_SCHEDULER_add_delayed (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT,
&session_timeout,
s);
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Timeout for session %p set to %llu\n",
- s, GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Timeout for session %p set to %llu\n",
+ s,
+ GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
}
+
/**
* Increment session timeout due to activity
*/
reschedule_session_timeout (struct Session *s)
{
GNUNET_assert (NULL != s);
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != s->timeout_task);
-
+ if (GNUNET_SCHEDULER_NO_TASK == s->timeout_task)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Timeout for peer `%s' %s not scheduled\n",
+ GNUNET_i2s (&s->target),
+ tcp_address_to_string(NULL, s->addr, s->addrlen));
+ return;
+ }
GNUNET_SCHEDULER_cancel (s->timeout_task);
s->timeout_task = GNUNET_SCHEDULER_add_delayed (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT,
&session_timeout,
s);
-
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Timeout rescheduled for session %p set to %llu\n",
- s, GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
+ s,
+ (unsigned long long) GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
}
+
/**
* Cancel timeout
*/
stop_session_timeout (struct Session *s)
{
GNUNET_assert (NULL != s);
-
if (GNUNET_SCHEDULER_NO_TASK != s->timeout_task)
{
GNUNET_SCHEDULER_cancel (s->timeout_task);
s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Timeout rescheduled for session %p canceled\n",
- s, GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Timeout rescheduled for session %p canceled\n",
+ s, GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value);
}
else
{
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Timeout for session %p was not active\n",
- s);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Timeout for session %p was not active\n",
+ s);
}
}
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