/**
* @file transport/plugin_transport_udp.c
- * @brief Implementation of the UDP NAT punching
- * transport service
+ * @brief Implementation of the UDP transport protocol
* @author Christian Grothoff
* @author Nathan Evans
+ * @author Matthias Wachs
*/
#include "platform.h"
+#include "plugin_transport_udp.h"
#include "gnunet_hello_lib.h"
#include "gnunet_util_lib.h"
#include "gnunet_fragmentation_lib.h"
#define LOG(kind,...) GNUNET_log_from (kind, "transport-udp", __VA_ARGS__)
-#define DEBUG_UDP GNUNET_EXTRA_LOGGING
-
-/**
- * MTU for fragmentation subsystem. Should be conservative since
- * all communicating peers MUST work with this MTU.
- */
-#define UDP_MTU 1400
-
/**
* Number of messages we can defragment in parallel. We only really
* defragment 1 message at a time, but if messages get re-ordered, we
#define UDP_MAX_SENDER_ADDRESSES_WITH_DEFRAG 128
-GNUNET_NETWORK_STRUCT_BEGIN
/**
- * UDP Message-Packet header (after defragmentation).
+ * Closure for 'append_port'.
*/
-struct UDPMessage
+struct PrettyPrinterContext
{
/**
- * Message header.
+ * Function to call with the result.
*/
- struct GNUNET_MessageHeader header;
+ GNUNET_TRANSPORT_AddressStringCallback asc;
/**
- * Always zero for now.
+ * Clsoure for 'asc'.
*/
- uint32_t reserved;
+ void *asc_cls;
/**
- * What is the identity of the sender
+ * Port to add after the IP address.
*/
- struct GNUNET_PeerIdentity sender;
-
+ uint16_t port;
};
-/**
- * UDP ACK Message-Packet header (after defragmentation).
- */
-struct UDP_ACK_Message
+struct Session
{
/**
- * Message header.
+ * Which peer is this session for?
*/
- struct GNUNET_MessageHeader header;
+ struct GNUNET_PeerIdentity target;
/**
- * Desired delay for flow control
+ * Address of the other peer
*/
- uint32_t delay;
+ const struct sockaddr *sock_addr;
+
+ size_t addrlen;
/**
- * What is the identity of the sender
+ * Desired delay for next sending we send to other peer
*/
- struct GNUNET_PeerIdentity sender;
-};
-
-
-struct UDP_Beacon_Message
-{
- /**
- * Message header.
- */
- struct GNUNET_MessageHeader header;
-
- /**
- * What is the identity of the sender
- */
- struct GNUNET_PeerIdentity sender;
-};
-
+ struct GNUNET_TIME_Relative flow_delay_for_other_peer;
-/**
- * Network format for IPv4 addresses.
- */
-struct IPv4UdpAddress
-{
/**
- * IPv4 address, in network byte order.
+ * Desired delay for next sending we received from other peer
*/
- uint32_t ipv4_addr GNUNET_PACKED;
+ struct GNUNET_TIME_Absolute flow_delay_from_other_peer;
/**
- * Port number, in network byte order.
+ * expected delay for ACKs
*/
- uint16_t u4_port GNUNET_PACKED;
-};
-
+ struct GNUNET_TIME_Relative last_expected_delay;
-/**
- * Network format for IPv6 addresses.
- */
-struct IPv6UdpAddress
-{
- /**
- * IPv6 address.
- */
- struct in6_addr ipv6_addr GNUNET_PACKED;
+ struct GNUNET_ATS_Information ats;
- /**
- * Port number, in network byte order.
- */
- uint16_t u6_port GNUNET_PACKED;
+ struct FragmentationContext * frag_ctx;
};
-GNUNET_NETWORK_STRUCT_END
-/* Forward definition */
-struct Plugin;
+
+struct SessionCompareContext
+{
+ struct Session *res;
+ const struct GNUNET_HELLO_Address *addr;
+};
/**
- * Session with another peer. FIXME: why not make this into
- * a regular 'struct Session' and pass it around!?
+ * Closure for 'process_inbound_tokenized_messages'
*/
-struct Session
+struct SourceInformation
{
-
/**
- * Which peer is this session for?
+ * Sender identity.
*/
- struct GNUNET_PeerIdentity target;
+ struct GNUNET_PeerIdentity sender;
/**
- * Pointer to the global plugin struct.
+ * Source address.
*/
- struct Plugin *plugin;
+ const void *arg;
/**
- * Address of the other peer
+ * Number of bytes in source address.
*/
- const struct sockaddr *sock_addr;
-
- size_t addrlen;
+ size_t args;
- /**
- * ATS network type in NBO
- */
- uint32_t ats_address_network_type;
+ struct Session *session;
+};
- /**
- * Function to call upon completion of the transmission.
- */
- GNUNET_TRANSPORT_TransmitContinuation cont;
+/**
+ * Closure for 'find_receive_context'.
+ */
+struct FindReceiveContext
+{
/**
- * Closure for 'cont'.
+ * Where to store the result.
*/
- void *cont_cls;
+ struct DefragContext *rc;
/**
- * Current outgoing message to this peer.
+ * Address to find.
*/
- struct GNUNET_FRAGMENT_Context *frag;
-
- struct GNUNET_TIME_Absolute valid_until;
-
- GNUNET_SCHEDULER_TaskIdentifier invalidation_task;
-
- GNUNET_SCHEDULER_TaskIdentifier delayed_cont_task;
+ const struct sockaddr *addr;
/**
- * Desired delay for next sending we send to other peer
+ * Number of bytes in 'addr'.
*/
- struct GNUNET_TIME_Relative flow_delay_for_other_peer;
+ socklen_t addr_len;
- /**
- * Desired delay for next sending we received from other peer
- */
- struct GNUNET_TIME_Absolute flow_delay_from_other_peer;
+ struct Session *session;
};
+
/**
* Data structure to track defragmentation contexts based
* on the source of the UDP traffic.
*/
-struct ReceiveContext
+struct DefragContext
{
/**
* Length of 'src_addr'
*/
size_t addr_len;
-
- struct GNUNET_PeerIdentity id;
-
};
-struct BroadcastAddress
-{
- struct BroadcastAddress *next;
- struct BroadcastAddress *prev;
-
- void *addr;
- socklen_t addrlen;
-};
/**
- * Encapsulation of all of the state of the plugin.
+ * Closure for 'process_inbound_tokenized_messages'
*/
-struct Plugin
+struct FragmentationContext
{
+ struct FragmentationContext * next;
+ struct FragmentationContext * prev;
- /**
- * Our environment.
- */
- struct GNUNET_TRANSPORT_PluginEnvironment *env;
-
- /**
- * Session of peers with whom we are currently connected,
- * map of peer identity to 'struct PeerSession'.
- */
- struct GNUNET_CONTAINER_MultiHashMap *sessions;
-
- /**
- * Session of peers with whom we are currently connected,
- * map of peer identity to 'struct PeerSession'.
- */
- struct GNUNET_CONTAINER_MultiHashMap *inbound_sessions;
-
- /**
- * Heap with all of our defragmentation activities.
- */
- struct GNUNET_CONTAINER_Heap *defrags;
-
- /**
- * ID of select task
- */
- GNUNET_SCHEDULER_TaskIdentifier select_task;
-
- /**
- * Tokenizer for inbound messages.
- */
- struct GNUNET_SERVER_MessageStreamTokenizer *mst;
-
- /**
- * Bandwidth tracker to limit global UDP traffic.
- */
- struct GNUNET_BANDWIDTH_Tracker tracker;
-
- /**
- * Address we were told to bind to exclusively (IPv4).
- */
- char *bind4_address;
-
- /**
- * Address we were told to bind to exclusively (IPv6).
- */
- char *bind6_address;
-
- /**
- * Handle to NAT traversal support.
- */
- struct GNUNET_NAT_Handle *nat;
-
- /**
- * FD Read set
- */
- struct GNUNET_NETWORK_FDSet *rs;
+ struct Plugin * plugin;
+ struct GNUNET_FRAGMENT_Context * frag;
+ struct Session * session;
- /**
- * The read socket for IPv4
- */
- struct GNUNET_NETWORK_Handle *sockv4;
-
- /**
- * The read socket for IPv6
- */
- struct GNUNET_NETWORK_Handle *sockv6;
+ struct GNUNET_TIME_Absolute timeout;
- /**
- * Beacon broadcasting
- * -------------------
- */
/**
- * Broadcast interval
+ * Function to call upon completion of the transmission.
*/
- struct GNUNET_TIME_Relative broadcast_interval;
+ GNUNET_TRANSPORT_TransmitContinuation cont;
/**
- * Broadcast with IPv4
+ * Closure for 'cont'.
*/
- int broadcast_ipv4;
+ void *cont_cls;
- /**
- * Broadcast with IPv6
- */
- int broadcast_ipv6;
+ size_t bytes_to_send;
+};
- /**
- * Tokenizer for inbound messages.
- */
- struct GNUNET_SERVER_MessageStreamTokenizer *broadcast_ipv6_mst;
- struct GNUNET_SERVER_MessageStreamTokenizer *broadcast_ipv4_mst;
+struct UDPMessageWrapper
+{
+ struct Session *session;
+ struct UDPMessageWrapper *prev;
+ struct UDPMessageWrapper *next;
+ char *udp;
+ size_t msg_size;
- /**
- * ID of select broadcast task
- */
- GNUNET_SCHEDULER_TaskIdentifier send_ipv4_broadcast_task;
+ struct GNUNET_TIME_Absolute timeout;
/**
- * ID of select broadcast task
+ * Function to call upon completion of the transmission.
*/
- GNUNET_SCHEDULER_TaskIdentifier send_ipv6_broadcast_task;
+ GNUNET_TRANSPORT_TransmitContinuation cont;
/**
- * IPv6 multicast address
+ * Closure for 'cont'.
*/
- struct sockaddr_in6 ipv6_multicast_address;
+ void *cont_cls;
- /**
- * DLL of IPv4 broadcast addresses
- */
- struct BroadcastAddress *ipv4_broadcast_tail;
- struct BroadcastAddress *ipv4_broadcast_head;
+ struct FragmentationContext *frag_ctx;
+};
- /**
- * expected delay for ACKs
- */
- struct GNUNET_TIME_Relative last_expected_delay;
+/**
+ * UDP ACK Message-Packet header (after defragmentation).
+ */
+struct UDP_ACK_Message
+{
/**
- * Port we broadcasting on.
+ * Message header.
*/
- uint16_t broadcast_port;
+ struct GNUNET_MessageHeader header;
/**
- * Port we listen on.
+ * Desired delay for flow control
*/
- uint16_t port;
+ uint32_t delay;
/**
- * Port we advertise on.
+ * What is the identity of the sender
*/
- uint16_t aport;
+ struct GNUNET_PeerIdentity sender;
};
-struct PeerSessionIteratorContext
-{
- struct Session *result;
- const void *addr;
- size_t addrlen;
-};
/**
- * Lookup the session for the given peer.
+ * Function called for a quick conversion of the binary address to
+ * a numeric address. Note that the caller must not free the
+ * address and that the next call to this function is allowed
+ * to override the address again.
*
- * @param plugin the plugin
- * @param peer peer's identity
- * @return NULL if we have no session
+ * @param cls closure
+ * @param addr binary address
+ * @param addrlen length of the address
+ * @return string representing the same address
*/
-static struct Session *
-find_session (struct Plugin *plugin, const struct GNUNET_PeerIdentity *peer)
-{
- return GNUNET_CONTAINER_multihashmap_get (plugin->sessions,
- &peer->hashPubKey);
-}
-
-
-static int
-inbound_session_iterator (void *cls, const GNUNET_HashCode * key, void *value)
+const char *
+udp_address_to_string (void *cls, const void *addr, size_t addrlen)
{
- struct PeerSessionIteratorContext *psc = cls;
- struct Session *s = value;
+ static char rbuf[INET6_ADDRSTRLEN + 10];
+ char buf[INET6_ADDRSTRLEN];
+ const void *sb;
+ struct in_addr a4;
+ struct in6_addr a6;
+ const struct IPv4UdpAddress *t4;
+ const struct IPv6UdpAddress *t6;
+ int af;
+ uint16_t port;
- if (s->addrlen == psc->addrlen)
+ if (addrlen == sizeof (struct IPv6UdpAddress))
{
- if (0 == memcmp (&s[1], psc->addr, s->addrlen))
- psc->result = s;
+ t6 = addr;
+ af = AF_INET6;
+ port = ntohs (t6->u6_port);
+ memcpy (&a6, &t6->ipv6_addr, sizeof (a6));
+ sb = &a6;
}
- if (psc->result != NULL)
- return GNUNET_NO;
- return GNUNET_YES;
+ else if (addrlen == sizeof (struct IPv4UdpAddress))
+ {
+ t4 = addr;
+ af = AF_INET;
+ port = ntohs (t4->u4_port);
+ memcpy (&a4, &t4->ipv4_addr, sizeof (a4));
+ sb = &a4;
+ }
+ else
+ {
+ GNUNET_break_op (0);
+ return NULL;
+ }
+ inet_ntop (af, sb, buf, INET6_ADDRSTRLEN);
+ GNUNET_snprintf (rbuf, sizeof (rbuf), (af == AF_INET6) ? "[%s]:%u" : "%s:%u",
+ buf, port);
+ return rbuf;
}
+
/**
- * Lookup the session for the given peer.
+ * Append our port and forward the result.
*
- * @param plugin the plugin
- * @param peer peer's identity
- * @param addr address
- * @param addrlen address length
- * @return NULL if we have no session
+ * @param cls a 'struct PrettyPrinterContext'
+ * @param hostname result from DNS resolver
*/
-static struct Session *
-find_inbound_session (struct Plugin *plugin,
- const struct GNUNET_PeerIdentity *peer, const void *addr,
- size_t addrlen)
+static void
+append_port (void *cls, const char *hostname)
{
- struct PeerSessionIteratorContext psc;
-
- psc.result = NULL;
- psc.addrlen = addrlen;
- psc.addr = addr;
+ struct PrettyPrinterContext *ppc = cls;
+ char *ret;
- GNUNET_CONTAINER_multihashmap_get_multiple (plugin->inbound_sessions,
- &peer->hashPubKey,
- &inbound_session_iterator, &psc);
- return psc.result;
+ if (hostname == NULL)
+ {
+ ppc->asc (ppc->asc_cls, NULL);
+ GNUNET_free (ppc);
+ return;
+ }
+ GNUNET_asprintf (&ret, "%s:%d", hostname, ppc->port);
+ ppc->asc (ppc->asc_cls, ret);
+ GNUNET_free (ret);
}
-static int
-inbound_session_by_addr_iterator (void *cls, const GNUNET_HashCode * key,
- void *value)
+/**
+ * Convert the transports address to a nice, human-readable
+ * format.
+ *
+ * @param cls closure
+ * @param type name of the transport that generated the address
+ * @param addr one of the addresses of the host, NULL for the last address
+ * the specific address format depends on the transport
+ * @param addrlen length of the address
+ * @param numeric should (IP) addresses be displayed in numeric form?
+ * @param timeout after how long should we give up?
+ * @param asc function to call on each string
+ * @param asc_cls closure for asc
+ */
+static void
+udp_plugin_address_pretty_printer (void *cls, const char *type,
+ const void *addr, size_t addrlen,
+ int numeric,
+ struct GNUNET_TIME_Relative timeout,
+ GNUNET_TRANSPORT_AddressStringCallback asc,
+ void *asc_cls)
{
- struct PeerSessionIteratorContext *psc = cls;
- struct Session *s = value;
+ struct PrettyPrinterContext *ppc;
+ const void *sb;
+ size_t sbs;
+ struct sockaddr_in a4;
+ struct sockaddr_in6 a6;
+ const struct IPv4UdpAddress *u4;
+ const struct IPv6UdpAddress *u6;
+ uint16_t port;
- if (s->addrlen == psc->addrlen)
+ if (addrlen == sizeof (struct IPv6UdpAddress))
{
- if (0 == memcmp (&s[1], psc->addr, s->addrlen))
- psc->result = s;
+ u6 = addr;
+ memset (&a6, 0, sizeof (a6));
+ a6.sin6_family = AF_INET6;
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ a6.sin6_len = sizeof (a6);
+#endif
+ a6.sin6_port = u6->u6_port;
+ memcpy (&a6.sin6_addr, &u6->ipv6_addr, sizeof (struct in6_addr));
+ port = ntohs (u6->u6_port);
+ sb = &a6;
+ sbs = sizeof (a6);
+ }
+ else if (addrlen == sizeof (struct IPv4UdpAddress))
+ {
+ u4 = addr;
+ memset (&a4, 0, sizeof (a4));
+ a4.sin_family = AF_INET;
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ a4.sin_len = sizeof (a4);
+#endif
+ a4.sin_port = u4->u4_port;
+ a4.sin_addr.s_addr = u4->ipv4_addr;
+ port = ntohs (u4->u4_port);
+ sb = &a4;
+ sbs = sizeof (a4);
}
- if (psc->result != NULL)
- return GNUNET_NO;
else
- return GNUNET_YES;
-};
+ {
+ /* invalid address */
+ GNUNET_break_op (0);
+ asc (asc_cls, NULL);
+ return;
+ }
+ ppc = GNUNET_malloc (sizeof (struct PrettyPrinterContext));
+ ppc->asc = asc;
+ ppc->asc_cls = asc_cls;
+ ppc->port = port;
+ GNUNET_RESOLVER_hostname_get (sb, sbs, !numeric, timeout, &append_port, ppc);
+}
+
/**
- * Lookup the session for the given peer just by address.
+ * Check if the given port is plausible (must be either our listen
+ * port or our advertised port). If it is neither, we return
+ * GNUNET_SYSERR.
*
- * @param plugin the plugin
- * @param addr address
- * @param addrlen address length
- * @return NULL if we have no session
+ * @param plugin global variables
+ * @param in_port port number to check
+ * @return GNUNET_OK if port is either open_port or adv_port
*/
-static struct Session *
-find_inbound_session_by_addr (struct Plugin *plugin, const void *addr,
- size_t addrlen)
+static int
+check_port (struct Plugin *plugin, uint16_t in_port)
{
- struct PeerSessionIteratorContext psc;
-
- psc.result = NULL;
- psc.addrlen = addrlen;
- psc.addr = addr;
-
- GNUNET_CONTAINER_multihashmap_iterate (plugin->inbound_sessions,
- &inbound_session_by_addr_iterator,
- &psc);
- return psc.result;
+ if ((in_port == plugin->port) || (in_port == plugin->aport))
+ return GNUNET_OK;
+ return GNUNET_SYSERR;
}
+
/**
- * Destroy a session, plugin is being unloaded.
+ * Function that will be called to check if a binary address for this
+ * plugin is well-formed and corresponds to an address for THIS peer
+ * (as per our configuration). Naturally, if absolutely necessary,
+ * plugins can be a bit conservative in their answer, but in general
+ * plugins should make sure that the address does not redirect
+ * traffic to a 3rd party that might try to man-in-the-middle our
+ * traffic.
+ *
+ * @param cls closure, should be our handle to the Plugin
+ * @param addr pointer to the address
+ * @param addrlen length of addr
+ * @return GNUNET_OK if this is a plausible address for this peer
+ * and transport, GNUNET_SYSERR if not
*
- * @param cls unused
- * @param key hash of public key of target peer
- * @param value a 'struct PeerSession*' to clean up
- * @return GNUNET_OK (continue to iterate)
*/
static int
-destroy_session (void *cls, const GNUNET_HashCode * key, void *value)
+udp_plugin_check_address (void *cls, const void *addr, size_t addrlen)
{
- struct Session *peer_session = value;
+ struct Plugin *plugin = cls;
+ struct IPv4UdpAddress *v4;
+ struct IPv6UdpAddress *v6;
- GNUNET_assert (GNUNET_YES ==
- GNUNET_CONTAINER_multihashmap_remove (peer_session->
- plugin->sessions,
- &peer_session->
- target.hashPubKey,
- peer_session));
- if (peer_session->frag != NULL)
- GNUNET_FRAGMENT_context_destroy (peer_session->frag);
- if (GNUNET_SCHEDULER_NO_TASK != peer_session->delayed_cont_task)
- GNUNET_SCHEDULER_cancel (peer_session->delayed_cont_task);
- GNUNET_free (peer_session);
+ if ((addrlen != sizeof (struct IPv4UdpAddress)) &&
+ (addrlen != sizeof (struct IPv6UdpAddress)))
+ {
+ GNUNET_break_op (0);
+ return GNUNET_SYSERR;
+ }
+ if (addrlen == sizeof (struct IPv4UdpAddress))
+ {
+ v4 = (struct IPv4UdpAddress *) addr;
+ if (GNUNET_OK != check_port (plugin, ntohs (v4->u4_port)))
+ return GNUNET_SYSERR;
+ if (GNUNET_OK !=
+ GNUNET_NAT_test_address (plugin->nat, &v4->ipv4_addr,
+ sizeof (struct in_addr)))
+ return GNUNET_SYSERR;
+ }
+ else
+ {
+ v6 = (struct IPv6UdpAddress *) addr;
+ if (IN6_IS_ADDR_LINKLOCAL (&v6->ipv6_addr))
+ {
+ GNUNET_break_op (0);
+ return GNUNET_SYSERR;
+ }
+ if (GNUNET_OK != check_port (plugin, ntohs (v6->u6_port)))
+ return GNUNET_SYSERR;
+ if (GNUNET_OK !=
+ GNUNET_NAT_test_address (plugin->nat, &v6->ipv6_addr,
+ sizeof (struct in6_addr)))
+ return GNUNET_SYSERR;
+ }
return GNUNET_OK;
}
* @return GNUNET_OK (continue to iterate)
*/
static int
-destroy_inbound_session (void *cls, const GNUNET_HashCode * key, void *value)
+disconnect_and_free_it (void *cls, const GNUNET_HashCode * key, void *value)
{
+ struct Plugin *plugin = cls;
struct Session *s = value;
+ struct UDPMessageWrapper *udpw;
+
+#if DEBUG_UDP
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Session %p to peer `%s' address ended \n",
+ s,
+ GNUNET_i2s (&s->target),
+ GNUNET_a2s (s->sock_addr, s->addrlen));
+#endif
+ plugin->env->session_end (plugin->env->cls, &s->target, s);
+
+ if (s->frag_ctx != NULL)
+ {
+ GNUNET_FRAGMENT_context_destroy(s->frag_ctx->frag);
+ GNUNET_free (s->frag_ctx);
+ s->frag_ctx = NULL;
+ }
+
+ udpw = plugin->msg_head;
+ while (udpw != NULL)
+ {
+ if (udpw->session == s)
+ {
+ GNUNET_CONTAINER_DLL_remove(plugin->msg_head, plugin->msg_tail, udpw);
+
+ if (udpw->cont != NULL)
+ udpw->cont (udpw->cont_cls, &s->target, GNUNET_SYSERR);
+ GNUNET_free (udpw);
+ }
+ udpw = plugin->msg_head;
+ }
+
+ GNUNET_assert (GNUNET_YES ==
+ GNUNET_CONTAINER_multihashmap_remove (plugin->sessions,
+ &s->target.hashPubKey,
+ s));
+
- if (s->invalidation_task != GNUNET_SCHEDULER_NO_TASK)
- GNUNET_SCHEDULER_cancel (s->invalidation_task);
- if (GNUNET_SCHEDULER_NO_TASK != s->delayed_cont_task)
- GNUNET_SCHEDULER_cancel (s->delayed_cont_task);
- GNUNET_CONTAINER_multihashmap_remove (s->plugin->inbound_sessions,
- &s->target.hashPubKey, s);
GNUNET_free (s);
return GNUNET_OK;
}
udp_disconnect (void *cls, const struct GNUNET_PeerIdentity *target)
{
struct Plugin *plugin = cls;
- struct Session *session;
+ GNUNET_assert (plugin != NULL);
- session = find_session (plugin, target);
- if (NULL == session)
- return;
- GNUNET_assert (GNUNET_OK ==
- GNUNET_CONTAINER_multihashmap_remove (plugin->sessions,
- &target->hashPubKey,
- session));
-
- GNUNET_CONTAINER_multihashmap_get_multiple (plugin->inbound_sessions,
- &target->hashPubKey,
- &destroy_inbound_session, NULL);
- plugin->last_expected_delay = GNUNET_FRAGMENT_context_destroy (session->frag);
- if (GNUNET_SCHEDULER_NO_TASK != session->delayed_cont_task)
- GNUNET_SCHEDULER_cancel (session->delayed_cont_task);
- if (session->cont != NULL)
- session->cont (session->cont_cls, target, GNUNET_SYSERR);
- GNUNET_free (session);
-}
+ GNUNET_assert (target != NULL);
+#if DEBUG_UDP
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Disconnecting from peer `%s'\n", GNUNET_i2s (target));
+#endif
+ /* Clean up sessions */
+ GNUNET_CONTAINER_multihashmap_get_multiple (plugin->sessions, &target->hashPubKey, &disconnect_and_free_it, plugin);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "FREEED SESSIONS from peer `%s'\n", GNUNET_i2s (target));
+}
static struct Session *
create_session (struct Plugin *plugin, const struct GNUNET_PeerIdentity *target,
const void *addr, size_t addrlen,
GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
{
- struct Session *peer_session;
+ struct Session *s;
const struct IPv4UdpAddress *t4;
const struct IPv6UdpAddress *t6;
struct sockaddr_in *v4;
struct sockaddr_in6 *v6;
size_t len;
- struct GNUNET_ATS_Information ats;
switch (addrlen)
{
return NULL;
}
t4 = addr;
- peer_session =
- GNUNET_malloc (sizeof (struct Session) + sizeof (struct sockaddr_in));
+ s = GNUNET_malloc (sizeof (struct Session) + sizeof (struct sockaddr_in));
len = sizeof (struct sockaddr_in);
- v4 = (struct sockaddr_in *) &peer_session[1];
+ v4 = (struct sockaddr_in *) &s[1];
v4->sin_family = AF_INET;
#if HAVE_SOCKADDR_IN_SIN_LEN
v4->sin_len = sizeof (struct sockaddr_in);
#endif
v4->sin_port = t4->u4_port;
v4->sin_addr.s_addr = t4->ipv4_addr;
- ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) v4, sizeof (struct sockaddr_in));
+ s->ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) v4, sizeof (struct sockaddr_in));
break;
case sizeof (struct IPv6UdpAddress):
if (NULL == plugin->sockv6)
return NULL;
}
t6 = addr;
- peer_session =
+ s =
GNUNET_malloc (sizeof (struct Session) + sizeof (struct sockaddr_in6));
len = sizeof (struct sockaddr_in6);
- v6 = (struct sockaddr_in6 *) &peer_session[1];
+ v6 = (struct sockaddr_in6 *) &s[1];
v6->sin6_family = AF_INET6;
#if HAVE_SOCKADDR_IN_SIN_LEN
v6->sin6_len = sizeof (struct sockaddr_in6);
#endif
v6->sin6_port = t6->u6_port;
v6->sin6_addr = t6->ipv6_addr;
- ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) v6, sizeof (struct sockaddr_in6));
+ s->ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) v6, sizeof (struct sockaddr_in6));
break;
default:
/* Must have a valid address to send to */
return NULL;
}
- peer_session->ats_address_network_type = ats.value;
- peer_session->valid_until = GNUNET_TIME_absolute_get_zero ();
- peer_session->invalidation_task = GNUNET_SCHEDULER_NO_TASK;
- peer_session->addrlen = len;
- peer_session->target = *target;
- peer_session->plugin = plugin;
- peer_session->sock_addr = (const struct sockaddr *) &peer_session[1];
- peer_session->cont = cont;
- peer_session->cont_cls = cont_cls;
+ s->addrlen = len;
+ s->target = *target;
+ s->sock_addr = (const struct sockaddr *) &s[1];
+ s->flow_delay_for_other_peer = GNUNET_TIME_relative_get_zero();
+ s->flow_delay_from_other_peer = GNUNET_TIME_absolute_get_zero();
+ s->last_expected_delay = GNUNET_TIME_UNIT_SECONDS;
- return peer_session;
+ return s;
}
-
static int session_cmp_it (void *cls,
const GNUNET_HashCode * key,
void *value)
{
- int res = GNUNET_OK;
- /*
- struct GNUNET_HELLO_Address *address = cls;
+ struct SessionCompareContext * cctx = cls;
+ const struct GNUNET_HELLO_Address *address = cctx->addr;
struct Session *s = value;
- struct IPv4UdpAddress * u4 = NULL;
- struct IPv4UdpAddress * u6 = NULL;
-
+ socklen_t s_addrlen = s->addrlen;
+#if VERBOSE_UDP
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Comparing address %s <-> %s\n",
+ udp_address_to_string (NULL, (void *) address->address, address->address_length),
+ GNUNET_a2s (s->sock_addr, s->addrlen));
+#endif
- if ((s->addrlen == address->address_length) &&
- (0 == memcmp (s->sock_addr, address->address, address->address_length)))
+ if ((address->address_length == sizeof (struct IPv4UdpAddress)) &&
+ (s_addrlen == sizeof (struct sockaddr_in)))
{
+ struct IPv4UdpAddress * u4 = NULL;
+ u4 = (struct IPv4UdpAddress *) address->address;
+ const struct sockaddr_in *s4 = (const struct sockaddr_in *) s->sock_addr;
+ if ((0 == memcmp ((const void *) &u4->ipv4_addr,(const void *) &s4->sin_addr, sizeof (struct in_addr))) &&
+ (u4->u4_port == s4->sin_port))
+ {
+ cctx->res = s;
+ return GNUNET_NO;
+ }
}
-*/
- return res;
+ if ((address->address_length == sizeof (struct IPv6UdpAddress)) &&
+ (s_addrlen == sizeof (struct sockaddr_in6)))
+ {
+ struct IPv6UdpAddress * u6 = NULL;
+ u6 = (struct IPv6UdpAddress *) address->address;
+ const struct sockaddr_in6 *s6 = (const struct sockaddr_in6 *) s->sock_addr;
+ if ((0 == memcmp (&u6->ipv6_addr, &s6->sin6_addr, sizeof (struct in6_addr))) &&
+ (u6->u6_port == s6->sin6_port))
+ {
+ cctx->res = s;
+ return GNUNET_NO;
+ }
+ }
+
+
+ return GNUNET_YES;
}
* @param address the address
* @return the session or NULL of max connections exceeded
*/
-
static struct Session *
udp_plugin_get_session (void *cls,
const struct GNUNET_HELLO_Address *address)
}
/* check if session already exists */
- GNUNET_CONTAINER_multihashmap_get_multiple(plugin->sessions, &address->peer.hashPubKey, session_cmp_it, (void *) address);
+ struct SessionCompareContext cctx;
+ cctx.addr = address;
+ cctx.res = NULL;
+#if VERBOSE_UDP
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Looking for existing session for peer `%s' `%s' \n", GNUNET_i2s (&address->peer), udp_address_to_string(NULL, address->address, address->address_length));
+#endif
+ GNUNET_CONTAINER_multihashmap_get_multiple(plugin->sessions, &address->peer.hashPubKey, session_cmp_it, &cctx);
+ if (cctx.res != NULL)
+ {
+#if VERBOSE_UDP
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found existing session %p\n", cctx.res);
+#endif
+ return cctx.res;
+ }
/* otherwise create new */
s = create_session (plugin,
address->address,
address->address_length,
NULL, NULL);
+#if VERBOSE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Creating new session %p for peer `%s' address `%s'\n",
+ s,
+ GNUNET_i2s(&address->peer),
+ udp_address_to_string(NULL,address->address,address->address_length));
+#endif
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_CONTAINER_multihashmap_put (plugin->sessions,
+ &s->target.hashPubKey,
+ s,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE));
return s;
}
+/**
+ * Function that is called with messages created by the fragmentation
+ * module. In the case of the 'proc' callback of the
+ * GNUNET_FRAGMENT_context_create function, this function must
+ * eventually call 'GNUNET_FRAGMENT_context_transmission_done'.
+ *
+ * @param cls closure, the 'struct FragmentationContext'
+ * @param msg the message that was created
+ */
+static void
+enqueue_fragment (void *cls, const struct GNUNET_MessageHeader *msg)
+{
+ struct FragmentationContext *frag_ctx = cls;
+ struct Plugin *plugin = frag_ctx->plugin;
+ struct UDPMessageWrapper * udpw;
+
+ size_t msg_len = ntohs (msg->size);
+
+#if VERBOSE_UDP
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Enqueuing fragment with %u bytes %u\n", msg_len , sizeof (struct UDPMessageWrapper));
+#endif
+
+ udpw = GNUNET_malloc (sizeof (struct UDPMessageWrapper) + msg_len);
+ udpw->session = frag_ctx->session;
+ udpw->udp = (char *) &udpw[1];
+
+ udpw->msg_size = msg_len;
+ udpw->cont = frag_ctx->cont;
+ udpw->cont_cls = frag_ctx->cont_cls;
+ udpw->timeout = frag_ctx->timeout;
+ udpw->frag_ctx = frag_ctx;
+ memcpy (udpw->udp, msg, msg_len);
+
+ GNUNET_CONTAINER_DLL_insert(plugin->msg_head, plugin->msg_tail, udpw);
+}
+
+
/**
* Function that can be used by the transport service to transmit
* a message using the plugin. Note that in the case of a
*/
static ssize_t
udp_plugin_send (void *cls,
- struct Session *session,
+ struct Session *s,
const char *msgbuf, size_t msgbuf_size,
unsigned int priority,
struct GNUNET_TIME_Relative to,
GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
{
- ssize_t sent = -1;
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "To be implemented\n");
- GNUNET_break (0);
- return sent;
-}
-
+ struct Plugin *plugin = cls;
+ size_t mlen = msgbuf_size + sizeof (struct UDPMessage);
-/**
- * Actually send out the message.
- *
- * @param plugin the plugin
- * @param sa the address to send the message to
- * @param msg message to transmit
- * @return the number of bytes written
- */
-static ssize_t
-udp_send (struct Plugin *plugin, const struct sockaddr *sa,
- const struct GNUNET_MessageHeader *msg)
-{
- ssize_t sent;
- size_t slen;
+ struct UDPMessageWrapper * udpw;
+ struct UDPMessage *udp;
+ char mbuf[mlen];
+ GNUNET_assert (plugin != NULL);
+ GNUNET_assert (s != NULL);
- switch (sa->sa_family)
+ if (mlen >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
{
- case AF_INET:
- if (NULL == plugin->sockv4)
- return 0;
- sent =
- GNUNET_NETWORK_socket_sendto (plugin->sockv4, msg, ntohs (msg->size),
- sa, slen = sizeof (struct sockaddr_in));
- break;
- case AF_INET6:
- if (NULL == plugin->sockv6)
- return 0;
- sent =
- GNUNET_NETWORK_socket_sendto (plugin->sockv6, msg, ntohs (msg->size),
- sa, slen = sizeof (struct sockaddr_in6));
- break;
- default:
GNUNET_break (0);
- return 0;
- }
- if (GNUNET_SYSERR == sent)
- {
- GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "sendto");
- LOG (GNUNET_ERROR_TYPE_ERROR,
- "UDP transmited %u-byte message to %s (%d: %s)\n",
- (unsigned int) ntohs (msg->size), GNUNET_a2s (sa, slen), (int) sent,
- (sent < 0) ? STRERROR (errno) : "ok");
-
+ return GNUNET_SYSERR;
}
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "UDP transmited %u-byte message to %s (%d: %s)\n",
- (unsigned int) ntohs (msg->size), GNUNET_a2s (sa, slen), (int) sent,
- (sent < 0) ? STRERROR (errno) : "ok");
- return sent;
-}
-
-
-/**
- * Function that is called with messages created by the fragmentation
- * module. In the case of the 'proc' callback of the
- * GNUNET_FRAGMENT_context_create function, this function must
- * eventually call 'GNUNET_FRAGMENT_context_transmission_done'.
- *
- * @param cls closure, the 'struct PeerSession'
- * @param msg the message that was created
- */
-static void
-send_fragment (void *cls, const struct GNUNET_MessageHeader *msg)
-{
- struct Session *session = cls;
-
- udp_send (session->plugin, session->sock_addr, msg);
- GNUNET_FRAGMENT_context_transmission_done (session->frag);
-}
-
-
-static const char *
-udp_address_to_string (void *cls, const void *addr, size_t addrlen);
-
-
-static void
-udp_call_continuation (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct Session *s = cls;
- GNUNET_TRANSPORT_TransmitContinuation cont = s->cont;
- s->delayed_cont_task = GNUNET_SCHEDULER_NO_TASK;
- s->cont = NULL;
- cont (s->cont_cls, &s->target, GNUNET_OK);
-}
-
-
-/**
- * Function that can be used by the transport service to transmit
- * a message using the plugin.
- *
- * @param cls closure
- * @param target who should receive this message (ignored by UDP)
- * @param msgbuf one or more GNUNET_MessageHeader(s) strung together
- * @param msgbuf_size the size of the msgbuf to send
- * @param priority how important is the message (ignored by UDP)
- * @param timeout when should we time out (give up) if we can not transmit?
- * @param session identifier used for this session (NULL for UDP)
- * @param addr the addr to send the message to
- * @param addrlen the len of addr
- * @param force_address not used, we had better have an address to send to
- * because we are stateless!!
- * @param cont continuation to call once the message has
- * been transmitted (or if the transport is ready
- * for the next transmission call; or if the
- * peer disconnected...)
- * @param cont_cls closure for cont
- *
- * @return the number of bytes written (may return 0 and the message can
- * still be transmitted later!)
- */
-static ssize_t
-udp_plugin_send_old (void *cls, const struct GNUNET_PeerIdentity *target,
- const char *msgbuf, size_t msgbuf_size, unsigned int priority,
- struct GNUNET_TIME_Relative timeout, struct Session *session,
- const void *addr, size_t addrlen, int force_address,
- GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
-{
- struct Plugin *plugin = cls;
- struct Session *peer_session;
- struct Session *s;
- const struct IPv4UdpAddress *t4;
- const struct IPv6UdpAddress *t6;
- size_t mlen = msgbuf_size + sizeof (struct UDPMessage);
- char mbuf[mlen];
- struct UDPMessage *udp;
- struct GNUNET_TIME_Relative delta;
-
- if (mlen >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
+ if (GNUNET_YES != GNUNET_CONTAINER_multihashmap_contains_value(plugin->sessions, &s->target.hashPubKey, s))
{
GNUNET_break (0);
return GNUNET_SYSERR;
}
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "UDP transmits %u-byte message to `%s' using address `%s' session 0x%X mode %i\n",
- msgbuf_size, GNUNET_i2s (target), udp_address_to_string (NULL, addr,
- addrlen),
- session, force_address);
-
- if ((force_address == GNUNET_SYSERR) && (session == NULL))
- return GNUNET_SYSERR;
-
- s = NULL;
- /* safety check: comparing address to address stored in session */
- if ((session != NULL) && (addr != NULL) && (addrlen != 0))
- {
- s = session;
- GNUNET_assert (GNUNET_YES ==
- GNUNET_CONTAINER_multihashmap_contains_value
- (plugin->inbound_sessions, &target->hashPubKey, s));
-
- if (0 != memcmp (&s->target, target, sizeof (struct GNUNET_PeerIdentity)))
- return GNUNET_SYSERR;
- switch (addrlen)
- {
- case sizeof (struct IPv4UdpAddress):
- if (NULL == plugin->sockv4)
- {
- if (cont != NULL)
- cont (cont_cls, target, GNUNET_SYSERR);
- return GNUNET_SYSERR;
- }
- t4 = addr;
- if (s->addrlen != (sizeof (struct sockaddr_in)))
- return GNUNET_SYSERR;
- struct sockaddr_in *a4 = (struct sockaddr_in *) s->sock_addr;
-
- GNUNET_assert (a4->sin_port == t4->u4_port);
- GNUNET_assert (0 ==
- memcmp (&a4->sin_addr, &t4->ipv4_addr,
- sizeof (struct in_addr)));
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Session 0x%X successfully checked!\n",
- session);
- break;
- case sizeof (struct IPv6UdpAddress):
- if (NULL == plugin->sockv6)
- {
- if (cont != NULL)
- cont (cont_cls, target, GNUNET_SYSERR);
- return GNUNET_SYSERR;
- }
- t6 = addr;
- GNUNET_assert (s->addrlen == sizeof (struct sockaddr_in6));
- struct sockaddr_in6 *a6 = (struct sockaddr_in6 *) s->sock_addr;
-
- GNUNET_assert (a6->sin6_port == t6->u6_port);
- GNUNET_assert (0 ==
- memcmp (&a6->sin6_addr, &t6->ipv6_addr,
- sizeof (struct in6_addr)));
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Session 0x%X successfully checked!\n",
- session);
- break;
- default:
- /* Must have a valid address to send to */
- GNUNET_break_op (0);
- }
- }
-//session_invalid:
- if ((addr == NULL) || (addrlen == 0))
- return GNUNET_SYSERR;
- peer_session = create_session (plugin, target, addr, addrlen, cont, cont_cls);
- if (peer_session == NULL)
- {
- if (cont != NULL)
- cont (cont_cls, target, GNUNET_SYSERR);
- return GNUNET_SYSERR;;
- }
-
-
-
+ "UDP transmits %u-byte message to `%s' using address `%s'\n",
+ msgbuf_size,
+ GNUNET_i2s (&s->target),
+ GNUNET_a2s(s->sock_addr, s->addrlen));
/* Message */
udp = (struct UDPMessage *) mbuf;
udp->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_MESSAGE);
udp->reserved = htonl (0);
udp->sender = *plugin->env->my_identity;
- memcpy (&udp[1], msgbuf, msgbuf_size);
- if (s != NULL)
- delta = GNUNET_TIME_absolute_get_remaining (s->flow_delay_from_other_peer);
- else
- delta = GNUNET_TIME_UNIT_ZERO;
if (mlen <= UDP_MTU)
{
- mlen = udp_send (plugin, peer_session->sock_addr, &udp->header);
- if (cont != NULL)
- {
- if ((delta.rel_value > 0) && (mlen > 0))
- {
- s->cont = cont;
- s->cont_cls = cont_cls;
- s->delayed_cont_task =
- GNUNET_SCHEDULER_add_delayed (delta, &udp_call_continuation, s);
- }
- else
- cont (cont_cls, target, (mlen > 0) ? GNUNET_OK : GNUNET_SYSERR);
- }
- GNUNET_free_non_null (peer_session);
+ udpw = GNUNET_malloc (sizeof (struct UDPMessageWrapper) + mlen);
+ udpw->session = s;
+ udpw->udp = (char *) &udpw[1];
+ udpw->msg_size = mlen;
+ udpw->timeout = GNUNET_TIME_absolute_add(GNUNET_TIME_absolute_get(), to);
+ udpw->cont = cont;
+ udpw->cont_cls = cont_cls;
+ udpw->frag_ctx = NULL;
+
+ memcpy (udpw->udp, udp, sizeof (struct UDPMessage));
+ memcpy (&udpw->udp[sizeof (struct UDPMessage)], msgbuf, msgbuf_size);
+
+ GNUNET_CONTAINER_DLL_insert(plugin->msg_head, plugin->msg_tail, udpw);
}
else
{
- GNUNET_assert (GNUNET_OK ==
- GNUNET_CONTAINER_multihashmap_put (plugin->sessions,
- &target->hashPubKey,
- peer_session,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
- peer_session->frag =
- GNUNET_FRAGMENT_context_create (plugin->env->stats, UDP_MTU,
- &plugin->tracker,
- plugin->last_expected_delay,
- &udp->header, &send_fragment,
- peer_session);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "UDP has to fragment message \n");
+ if (s->frag_ctx != NULL)
+ return GNUNET_SYSERR;
+ memcpy (&udp[1], msgbuf, msgbuf_size);
+ struct FragmentationContext * frag_ctx = GNUNET_malloc(sizeof (struct FragmentationContext));
+
+ frag_ctx->plugin = plugin;
+ frag_ctx->session = s;
+ frag_ctx->cont = cont;
+ frag_ctx->cont_cls = cont_cls;
+ frag_ctx->timeout = GNUNET_TIME_absolute_add(GNUNET_TIME_absolute_get(), to);
+ frag_ctx->bytes_to_send = mlen;
+ frag_ctx->frag = GNUNET_FRAGMENT_context_create (plugin->env->stats,
+ UDP_MTU,
+ &plugin->tracker,
+ s->last_expected_delay,
+ &udp->header,
+ &enqueue_fragment,
+ frag_ctx);
+
+ s->frag_ctx = frag_ctx;
+
}
return mlen;
}
+static ssize_t udp_plugin_send_wrapper (void *cls,
+ const struct
+ GNUNET_PeerIdentity *
+ target,
+ const char *msgbuf,
+ size_t msgbuf_size,
+ uint32_t priority,
+ struct
+ GNUNET_TIME_Relative
+ timeout,
+ struct Session * session,
+ const void *addr,
+ size_t addrlen,
+ int force_address,
+ GNUNET_TRANSPORT_TransmitContinuation
+ cont, void *cont_cls)
+{
+ int ret;
+ struct Session * s = NULL;
+ struct GNUNET_HELLO_Address * ha = NULL;
+
+ ha = GNUNET_HELLO_address_allocate(target, "", addr,addrlen);
+ GNUNET_assert (ha != NULL);
+ s = udp_plugin_get_session(cls, ha);
+ GNUNET_assert (s != NULL);
+ GNUNET_free (ha);
+ ret = udp_plugin_send (cls, s, msgbuf, msgbuf_size, priority, timeout, cont, cont_cls);
+
+ return ret;
+}
+
/**
- * Closure for 'process_inbound_tokenized_messages'
+ * Our external IP address/port mapping has changed.
+ *
+ * @param cls closure, the 'struct LocalAddrList'
+ * @param add_remove GNUNET_YES to mean the new public IP address, GNUNET_NO to mean
+ * the previous (now invalid) one
+ * @param addr either the previous or the new public IP address
+ * @param addrlen actual lenght of the address
*/
-struct SourceInformation
+static void
+udp_nat_port_map_callback (void *cls, int add_remove,
+ const struct sockaddr *addr, socklen_t addrlen)
{
- /**
- * Sender identity.
- */
- struct GNUNET_PeerIdentity sender;
-
- /**
- * Source address.
- */
- const void *arg;
-
- /**
- * Number of bytes in source address.
- */
+ struct Plugin *plugin = cls;
+ struct IPv4UdpAddress u4;
+ struct IPv6UdpAddress u6;
+ void *arg;
size_t args;
- struct Session *session;
-};
+ /* convert 'addr' to our internal format */
+ switch (addr->sa_family)
+ {
+ case AF_INET:
+ GNUNET_assert (addrlen == sizeof (struct sockaddr_in));
+ u4.ipv4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
+ u4.u4_port = ((struct sockaddr_in *) addr)->sin_port;
+ arg = &u4;
+ args = sizeof (u4);
+ break;
+ case AF_INET6:
+ GNUNET_assert (addrlen == sizeof (struct sockaddr_in6));
+ memcpy (&u6.ipv6_addr, &((struct sockaddr_in6 *) addr)->sin6_addr,
+ sizeof (struct in6_addr));
+ u6.u6_port = ((struct sockaddr_in6 *) addr)->sin6_port;
+ arg = &u6;
+ args = sizeof (u6);
+ break;
+ default:
+ GNUNET_break (0);
+ return;
+ }
+ /* modify our published address list */
+ plugin->env->notify_address (plugin->env->cls, add_remove, arg, args);
+}
+
/**
{
struct Plugin *plugin = cls;
struct SourceInformation *si = client;
- struct GNUNET_ATS_Information atsi[2];
+ struct GNUNET_ATS_Information ats[2];
struct GNUNET_TIME_Relative delay;
+ GNUNET_assert (si->session != NULL);
/* setup ATS */
- atsi[0].type = htonl (GNUNET_ATS_QUALITY_NET_DISTANCE);
- atsi[0].value = htonl (1);
- atsi[1].type = htonl (GNUNET_ATS_NETWORK_TYPE);
- atsi[1].value = si->session->ats_address_network_type;
- GNUNET_break (ntohl(si->session->ats_address_network_type) != GNUNET_ATS_NET_UNSPECIFIED);
-
-
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Giving Session %X %s to transport\n",
- si->session, GNUNET_i2s (&si->session->target));
- delay =
- plugin->env->receive (plugin->env->cls, &si->sender, hdr,
- (const struct GNUNET_ATS_Information *) &atsi, 2,
- si->session, si->arg, si->args);
+ ats[0].type = htonl (GNUNET_ATS_QUALITY_NET_DISTANCE);
+ ats[0].value = htonl (1);
+ ats[1] = si->session->ats;
+ GNUNET_break (ntohl(ats[1].value) != GNUNET_ATS_NET_UNSPECIFIED);
+
+ delay = plugin->env->receive (plugin->env->cls,
+ &si->sender,
+ hdr,
+ (const struct GNUNET_ATS_Information *) &ats, 2,
+ NULL,
+ si->arg,
+ si->args);
si->session->flow_delay_for_other_peer = delay;
}
-static void
-invalidation_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct Session *s = cls;
-
- s->invalidation_task = GNUNET_SCHEDULER_NO_TASK;
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Session %X (`%s') is now invalid\n", s,
- GNUNET_a2s (s->sock_addr, s->addrlen));
-
- s->plugin->env->session_end (s->plugin->env->cls, &s->target, s);
- GNUNET_assert (GNUNET_YES ==
- GNUNET_CONTAINER_multihashmap_remove (s->
- plugin->inbound_sessions,
- &s->target.hashPubKey,
- s));
- GNUNET_free (s);
-}
-
/**
* We've received a UDP Message. Process it (pass contents to main service).
socklen_t sender_addr_len)
{
struct SourceInformation si;
+ struct Session * s = NULL;
struct IPv4UdpAddress u4;
struct IPv6UdpAddress u6;
struct GNUNET_ATS_Information ats;
GNUNET_a2s (sender_addr, sender_addr_len));
#endif
- /* create a session for inbound connections */
- const struct UDPMessage *udp_msg = (const struct UDPMessage *) msg;
-
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Lookup inbound UDP sessions for peer `%s' address `%s'\n",
- GNUNET_i2s (&udp_msg->sender), udp_address_to_string (NULL, arg, args));
-
- struct Session *s = NULL;
-
- s = find_inbound_session (plugin, &udp_msg->sender, sender_addr,
- sender_addr_len);
+ struct GNUNET_HELLO_Address * address = GNUNET_HELLO_address_allocate(&msg->sender, "udp", arg, args);
+ s = udp_plugin_get_session(plugin, address);
+ GNUNET_free (address);
- if (s != NULL)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Found existing inbound UDP sessions 0x%X for peer `%s' address `%s'\n",
- s, GNUNET_i2s (&s->target), udp_address_to_string (NULL, arg, args));
- }
- else
- {
- s = create_session (plugin, &udp_msg->sender, arg, args, NULL, NULL);
- ats = plugin->env->get_address_type (plugin->env->cls, sender_addr, sender_addr_len);
- s->ats_address_network_type = ats.value;
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Creating inbound UDP sessions 0x%X for peer `%s' address `%s'\n", s,
- GNUNET_i2s (&s->target), udp_address_to_string (NULL, arg, args));
-
- GNUNET_assert (GNUNET_OK ==
- GNUNET_CONTAINER_multihashmap_put (plugin->inbound_sessions,
- &s->target.hashPubKey, s,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE));
- }
- s->valid_until =
- GNUNET_TIME_relative_to_absolute
- (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT);
- if (s->invalidation_task != GNUNET_SCHEDULER_NO_TASK)
- {
- GNUNET_SCHEDULER_cancel (s->invalidation_task);
- s->invalidation_task = GNUNET_SCHEDULER_NO_TASK;
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Rescheduling %X' `%s'\n", s,
- udp_address_to_string (NULL, arg, args));
- }
- s->invalidation_task =
- GNUNET_SCHEDULER_add_delayed (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT,
- &invalidation_task, s);
/* iterate over all embedded messages */
+ si.session = s;
si.sender = msg->sender;
si.arg = arg;
si.args = args;
- si.session = s;
+
GNUNET_SERVER_mst_receive (plugin->mst, &si, (const char *) &msg[1],
ntohs (msg->header.size) -
sizeof (struct UDPMessage), GNUNET_YES, GNUNET_NO);
}
+/**
+ * Scan the heap for a receive context with the given address.
+ *
+ * @param cls the 'struct FindReceiveContext'
+ * @param node internal node of the heap
+ * @param element value stored at the node (a 'struct ReceiveContext')
+ * @param cost cost associated with the node
+ * @return GNUNET_YES if we should continue to iterate,
+ * GNUNET_NO if not.
+ */
+static int
+find_receive_context (void *cls, struct GNUNET_CONTAINER_HeapNode *node,
+ void *element, GNUNET_CONTAINER_HeapCostType cost)
+{
+ struct FindReceiveContext *frc = cls;
+ struct DefragContext *e = element;
+
+ if ((frc->addr_len == e->addr_len) &&
+ (0 == memcmp (frc->addr, e->src_addr, frc->addr_len)))
+ {
+ frc->rc = e;
+ return GNUNET_NO;
+ }
+ return GNUNET_YES;
+}
+
+
/**
* Process a defragmented message.
*
static void
fragment_msg_proc (void *cls, const struct GNUNET_MessageHeader *msg)
{
- struct ReceiveContext *rc = cls;
+ struct DefragContext *rc = cls;
if (ntohs (msg->type) != GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_MESSAGE)
{
rc->src_addr, rc->addr_len);
}
+struct LookupContext
+{
+ const struct sockaddr * addr;
+ size_t addrlen;
+
+ struct Session *res;
+};
+
+static int
+lookup_session_by_addr_it (void *cls, const GNUNET_HashCode * key, void *value)
+{
+ struct LookupContext *l_ctx = cls;
+ struct Session * s = value;
+
+ if ((s->addrlen == l_ctx->addrlen) &&
+ (0 == memcmp (s->sock_addr, l_ctx->addr, s->addrlen)))
+ {
+ l_ctx->res = s;
+ return GNUNET_NO;
+ }
+ return GNUNET_YES;
+}
/**
* Transmit an acknowledgement.
static void
ack_proc (void *cls, uint32_t id, const struct GNUNET_MessageHeader *msg)
{
- struct ReceiveContext *rc = cls;
+ struct DefragContext *rc = cls;
size_t msize = sizeof (struct UDP_ACK_Message) + ntohs (msg->size);
- char buf[msize];
struct UDP_ACK_Message *udp_ack;
uint32_t delay = 0;
-
+ struct UDPMessageWrapper *udpw;
struct Session *s;
- s = find_inbound_session_by_addr (rc->plugin, rc->src_addr, rc->addr_len);
- if (s != NULL)
- {
- if (s->flow_delay_for_other_peer.rel_value <= UINT32_MAX)
- delay = s->flow_delay_for_other_peer.rel_value;
- else
- delay = UINT32_MAX;
- }
+ struct LookupContext l_ctx;
+ l_ctx.addr = rc->src_addr;
+ l_ctx.addrlen = rc->addr_len;
+ l_ctx.res = NULL;
+ GNUNET_CONTAINER_multihashmap_iterate (rc->plugin->sessions,
+ &lookup_session_by_addr_it,
+ &l_ctx);
+ s = l_ctx.res;
+ GNUNET_assert (s != NULL);
+
+ if (s->flow_delay_for_other_peer.rel_value <= UINT32_MAX)
+ delay = s->flow_delay_for_other_peer.rel_value;
#if DEBUG_UDP
LOG (GNUNET_ERROR_TYPE_DEBUG,
sockaddr_in6)),
delay);
#endif
- udp_ack = (struct UDP_ACK_Message *) buf;
+ udpw = GNUNET_malloc (sizeof (struct UDPMessageWrapper) + msize);
+ udpw->cont = NULL;
+ udpw->cont_cls = NULL;
+ udpw->frag_ctx = NULL;
+ udpw->msg_size = msize;
+ udpw->session = s;
+ udpw->timeout = GNUNET_TIME_absolute_get_forever();
+ udpw->udp = (char *)&udpw[1];
+
+ udp_ack = (struct UDP_ACK_Message *) udpw->udp;
udp_ack->header.size = htons ((uint16_t) msize);
udp_ack->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_ACK);
udp_ack->delay = htonl (delay);
udp_ack->sender = *rc->plugin->env->my_identity;
memcpy (&udp_ack[1], msg, ntohs (msg->size));
- (void) udp_send (rc->plugin, rc->src_addr, &udp_ack->header);
+
+ GNUNET_CONTAINER_DLL_insert(rc->plugin->msg_head, rc->plugin->msg_tail, udpw);
}
-/**
- * Closure for 'find_receive_context'.
- */
-struct FindReceiveContext
+static void read_process_msg (struct Plugin *plugin,
+ const struct GNUNET_MessageHeader *msg,
+ char *addr,
+ socklen_t fromlen)
{
- /**
- * Where to store the result.
- */
- struct ReceiveContext *rc;
+ if (ntohs (msg->size) < sizeof (struct UDPMessage))
+ {
+ GNUNET_break_op (0);
+ return;
+ }
+ process_udp_message (plugin, (const struct UDPMessage *) msg,
+ (const struct sockaddr *) addr, fromlen);
+ return;
+}
- /**
- * Address to find.
- */
- const struct sockaddr *addr;
+static void read_process_ack (struct Plugin *plugin,
+ const struct GNUNET_MessageHeader *msg,
+ char *addr,
+ socklen_t fromlen)
+{
+ const struct GNUNET_MessageHeader *ack;
+ const struct UDP_ACK_Message *udp_ack;
+ struct LookupContext l_ctx;
+ struct Session *s = NULL;
+ struct GNUNET_TIME_Relative flow_delay;
- /**
- * Number of bytes in 'addr'.
- */
- socklen_t addr_len;
+ if (ntohs (msg->size) <
+ sizeof (struct UDP_ACK_Message) + sizeof (struct GNUNET_MessageHeader))
+ {
+ GNUNET_break_op (0);
+ return;
+ }
- struct Session *session;
-};
+ udp_ack = (const struct UDP_ACK_Message *) msg;
+ l_ctx.addr = (const struct sockaddr *) addr;
+ l_ctx.addrlen = fromlen;
+ l_ctx.res = NULL;
+ GNUNET_CONTAINER_multihashmap_iterate (plugin->sessions,
+ &lookup_session_by_addr_it,
+ &l_ctx);
+ s = l_ctx.res;
-/**
- * Scan the heap for a receive context with the given address.
- *
- * @param cls the 'struct FindReceiveContext'
- * @param node internal node of the heap
- * @param element value stored at the node (a 'struct ReceiveContext')
- * @param cost cost associated with the node
- * @return GNUNET_YES if we should continue to iterate,
- * GNUNET_NO if not.
- */
-static int
-find_receive_context (void *cls, struct GNUNET_CONTAINER_HeapNode *node,
- void *element, GNUNET_CONTAINER_HeapCostType cost)
-{
- struct FindReceiveContext *frc = cls;
- struct ReceiveContext *e = element;
+ if ((s == NULL) || (s->frag_ctx == NULL))
+ return;
- if ((frc->addr_len == e->addr_len) &&
- (0 == memcmp (frc->addr, e->src_addr, frc->addr_len)))
+ flow_delay.rel_value = (uint64_t) ntohl (udp_ack->delay);
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "We received a sending delay of %llu\n",
+ flow_delay.rel_value);
+ s->flow_delay_from_other_peer =
+ GNUNET_TIME_relative_to_absolute (flow_delay);
+
+ ack = (const struct GNUNET_MessageHeader *) &udp_ack[1];
+ if (ntohs (ack->size) !=
+ ntohs (msg->size) - sizeof (struct UDP_ACK_Message))
{
- frc->rc = e;
- return GNUNET_NO;
+ GNUNET_break_op (0);
+ return;
}
- return GNUNET_YES;
+
+ if (GNUNET_OK != GNUNET_FRAGMENT_process_ack (s->frag_ctx->frag, ack))
+ {
+#if DEBUG_UDP
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "UDP processes %u-byte acknowledgement from `%s' at `%s'\n",
+ (unsigned int) ntohs (msg->size), GNUNET_i2s (&udp_ack->sender),
+ GNUNET_a2s ((const struct sockaddr *) addr, fromlen));
+#endif
+ return;
+ }
+
+#if DEBUG_UDP
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "FULL MESSAGE ACKed\n",
+ (unsigned int) ntohs (msg->size), GNUNET_i2s (&udp_ack->sender),
+ GNUNET_a2s ((const struct sockaddr *) addr, fromlen));
+#endif
+ s->last_expected_delay = GNUNET_FRAGMENT_context_destroy (s->frag_ctx->frag);
+
+ struct UDPMessageWrapper * udpw = plugin->msg_head;
+ while (udpw!= NULL)
+ {
+ if ((udpw->frag_ctx != NULL) && (udpw->frag_ctx == s->frag_ctx))
+ {
+ GNUNET_CONTAINER_DLL_remove(plugin->msg_head, plugin->msg_tail, udpw);
+ GNUNET_free (udpw);
+ }
+ udpw = udpw->next;
+ }
+
+ if (s->frag_ctx->cont != NULL)
+ s->frag_ctx->cont
+ (s->frag_ctx->cont_cls, &udp_ack->sender, GNUNET_OK);
+ GNUNET_free (s->frag_ctx);
+ s->frag_ctx = NULL;
+ return;
}
-struct Mstv4Context
+static void read_process_fragment (struct Plugin *plugin,
+ const struct GNUNET_MessageHeader *msg,
+ char *addr,
+ socklen_t fromlen)
{
- struct Plugin *plugin;
+ struct DefragContext *d_ctx;
+ struct GNUNET_TIME_Absolute now;
+ struct FindReceiveContext frc;
- struct IPv4UdpAddress addr;
- /**
- * ATS network type in NBO
- */
- uint32_t ats_address_network_type;
-};
-struct Mstv6Context
-{
- struct Plugin *plugin;
+ frc.rc = NULL;
+ frc.addr = (const struct sockaddr *) addr;
+ frc.addr_len = fromlen;
- struct IPv6UdpAddress addr;
- /**
- * ATS network type in NBO
- */
- uint32_t ats_address_network_type;
-};
+#if DEBUG_UDP
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "UDP processes %u-byte fragment from `%s'\n",
+ (unsigned int) ntohs (msg->size),
+ GNUNET_a2s ((const struct sockaddr *) addr, fromlen));
+#endif
+ /* Lookup existing receive context for this address */
+ GNUNET_CONTAINER_heap_iterate (plugin->defrag_ctxs,
+ &find_receive_context,
+ &frc);
+ now = GNUNET_TIME_absolute_get ();
+ d_ctx = frc.rc;
+
+ if (d_ctx == NULL)
+ {
+ /* Create a new defragmentation context */
+ d_ctx = GNUNET_malloc (sizeof (struct DefragContext) + fromlen);
+ memcpy (&d_ctx[1], addr, fromlen);
+ d_ctx->src_addr = (const struct sockaddr *) &d_ctx[1];
+ d_ctx->addr_len = fromlen;
+ d_ctx->plugin = plugin;
+ d_ctx->defrag =
+ GNUNET_DEFRAGMENT_context_create (plugin->env->stats, UDP_MTU,
+ UDP_MAX_MESSAGES_IN_DEFRAG, d_ctx,
+ &fragment_msg_proc, &ack_proc);
+ d_ctx->hnode =
+ GNUNET_CONTAINER_heap_insert (plugin->defrag_ctxs, d_ctx,
+ (GNUNET_CONTAINER_HeapCostType)
+ now.abs_value);
+#if DEBUG_UDP
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Created new defragmentation context for %u-byte fragment from `%s'\n",
+ (unsigned int) ntohs (msg->size),
+ GNUNET_a2s ((const struct sockaddr *) addr, fromlen));
+#endif
+ }
+ else
+ {
+#if DEBUG_UDP
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Found existing defragmentation context for %u-byte fragment from `%s'\n",
+ (unsigned int) ntohs (msg->size),
+ GNUNET_a2s ((const struct sockaddr *) addr, fromlen));
+#endif
+ }
+
+ if (GNUNET_OK == GNUNET_DEFRAGMENT_process_fragment (d_ctx->defrag, msg))
+ {
+ /* keep this 'rc' from expiring */
+ GNUNET_CONTAINER_heap_update_cost (plugin->defrag_ctxs, d_ctx->hnode,
+ (GNUNET_CONTAINER_HeapCostType)
+ now.abs_value);
+ }
+ if (GNUNET_CONTAINER_heap_get_size (plugin->defrag_ctxs) >
+ UDP_MAX_SENDER_ADDRESSES_WITH_DEFRAG)
+ {
+ /* remove 'rc' that was inactive the longest */
+ d_ctx = GNUNET_CONTAINER_heap_remove_root (plugin->defrag_ctxs);
+ GNUNET_assert (NULL != d_ctx);
+ GNUNET_DEFRAGMENT_context_destroy (d_ctx->defrag);
+ GNUNET_free (d_ctx);
+ }
+}
/**
* Read and process a message from the given socket.
* @param rsock socket to read from
*/
static void
-udp_read (struct Plugin *plugin, struct GNUNET_NETWORK_Handle *rsock)
+udp_select_read (struct Plugin *plugin, struct GNUNET_NETWORK_Handle *rsock)
{
socklen_t fromlen;
char addr[32];
char buf[65536];
- ssize_t ret;
+ ssize_t size;
const struct GNUNET_MessageHeader *msg;
- const struct GNUNET_MessageHeader *ack;
- struct Session *peer_session;
- const struct UDP_ACK_Message *udp_ack;
- struct ReceiveContext *rc;
- struct GNUNET_TIME_Absolute now;
- struct FindReceiveContext frc;
- struct Session *s = NULL;
- struct GNUNET_TIME_Relative flow_delay;
- struct GNUNET_ATS_Information ats;
fromlen = sizeof (addr);
memset (&addr, 0, sizeof (addr));
- ret =
- GNUNET_NETWORK_socket_recvfrom (rsock, buf, sizeof (buf),
+ size = GNUNET_NETWORK_socket_recvfrom (rsock, buf, sizeof (buf),
(struct sockaddr *) &addr, &fromlen);
- if (ret < sizeof (struct GNUNET_MessageHeader))
+
+ if (size < sizeof (struct GNUNET_MessageHeader))
{
GNUNET_break_op (0);
return;
msg = (const struct GNUNET_MessageHeader *) buf;
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "UDP received %u-byte message from `%s' type %i\n", (unsigned int) ret,
+ "UDP received %u-byte message from `%s' type %i\n", (unsigned int) size,
GNUNET_a2s ((const struct sockaddr *) addr, fromlen), ntohs (msg->type));
- if (ret != ntohs (msg->size))
+ if (size != ntohs (msg->size))
{
GNUNET_break_op (0);
return;
}
+
switch (ntohs (msg->type))
{
case GNUNET_MESSAGE_TYPE_TRANSPORT_BROADCAST_BEACON:
- {
- if (fromlen == sizeof (struct sockaddr_in))
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Received IPv4 HELLO beacon broadcast with %i bytes from address %s\n",
- ret, GNUNET_a2s ((const struct sockaddr *) &addr, fromlen));
-
- struct Mstv4Context *mc;
-
- mc = GNUNET_malloc (sizeof (struct Mstv4Context));
- struct sockaddr_in *av4 = (struct sockaddr_in *) &addr;
-
- mc->addr.ipv4_addr = av4->sin_addr.s_addr;
- mc->addr.u4_port = av4->sin_port;
- ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) &addr, fromlen);
- mc->ats_address_network_type = ats.value;
- if (GNUNET_OK !=
- GNUNET_SERVER_mst_receive (plugin->broadcast_ipv4_mst, mc, buf, ret,
- GNUNET_NO, GNUNET_NO))
- GNUNET_free (mc);
- }
- else if (fromlen == sizeof (struct sockaddr_in6))
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Received IPv6 HELLO beacon broadcast with %i bytes from address %s\n",
- ret, GNUNET_a2s ((const struct sockaddr *) &addr, fromlen));
-
- struct Mstv6Context *mc;
-
- mc = GNUNET_malloc (sizeof (struct Mstv6Context));
- struct sockaddr_in6 *av6 = (struct sockaddr_in6 *) &addr;
-
- mc->addr.ipv6_addr = av6->sin6_addr;
- mc->addr.u6_port = av6->sin6_port;
- ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) &addr, fromlen);
- mc->ats_address_network_type = ats.value;
-
- if (GNUNET_OK !=
- GNUNET_SERVER_mst_receive (plugin->broadcast_ipv6_mst, mc, buf, ret,
- GNUNET_NO, GNUNET_NO))
- GNUNET_free (mc);
- }
+ udp_broadcast_receive (plugin, &buf, size, addr, fromlen);
return;
- }
+
case GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_MESSAGE:
- if (ntohs (msg->size) < sizeof (struct UDPMessage))
- {
- GNUNET_break_op (0);
- return;
- }
- process_udp_message (plugin, (const struct UDPMessage *) msg,
- (const struct sockaddr *) addr, fromlen);
+ read_process_msg (plugin, msg, addr, fromlen);
return;
- case GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_ACK:
-
- if (ntohs (msg->size) <
- sizeof (struct UDP_ACK_Message) + sizeof (struct GNUNET_MessageHeader))
- {
- GNUNET_break_op (0);
- return;
- }
- udp_ack = (const struct UDP_ACK_Message *) msg;
- s = find_inbound_session (plugin, &udp_ack->sender, addr, fromlen);
- if (s != NULL)
- {
- flow_delay.rel_value = (uint64_t) ntohl (udp_ack->delay);
-
- LOG (GNUNET_ERROR_TYPE_DEBUG, "We received a sending delay of %llu\n",
- flow_delay.rel_value);
-
- s->flow_delay_from_other_peer =
- GNUNET_TIME_relative_to_absolute (flow_delay);
- }
- ack = (const struct GNUNET_MessageHeader *) &udp_ack[1];
- if (ntohs (ack->size) !=
- ntohs (msg->size) - sizeof (struct UDP_ACK_Message))
- {
- GNUNET_break_op (0);
- return;
- }
-#if DEBUG_UDP
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "UDP processes %u-byte acknowledgement from `%s' at `%s'\n",
- (unsigned int) ntohs (msg->size), GNUNET_i2s (&udp_ack->sender),
- GNUNET_a2s ((const struct sockaddr *) addr, fromlen));
-#endif
- peer_session = find_session (plugin, &udp_ack->sender);
- if (NULL == peer_session)
- {
-#if DEBUG_UDP
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Session for ACK not found, dropping ACK!\n");
-#endif
- return;
- }
- if (GNUNET_OK != GNUNET_FRAGMENT_process_ack (peer_session->frag, ack))
- return;
- GNUNET_assert (GNUNET_OK ==
- GNUNET_CONTAINER_multihashmap_remove (plugin->sessions,
- &udp_ack->
- sender.hashPubKey,
- peer_session));
- plugin->last_expected_delay =
- GNUNET_FRAGMENT_context_destroy (peer_session->frag);
- if (peer_session->cont != NULL)
- peer_session->cont (peer_session->cont_cls, &udp_ack->sender, GNUNET_OK);
- GNUNET_free (peer_session);
+ case GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_ACK:
+ read_process_ack (plugin, msg, addr, fromlen);;
return;
- case GNUNET_MESSAGE_TYPE_FRAGMENT:
- frc.rc = NULL;
- frc.addr = (const struct sockaddr *) addr;
- frc.addr_len = fromlen;
- GNUNET_CONTAINER_heap_iterate (plugin->defrags, &find_receive_context,
- &frc);
- now = GNUNET_TIME_absolute_get ();
- rc = frc.rc;
- if (rc == NULL)
- {
- /* need to create a new RC */
- rc = GNUNET_malloc (sizeof (struct ReceiveContext) + fromlen);
- memcpy (&rc[1], addr, fromlen);
- rc->src_addr = (const struct sockaddr *) &rc[1];
- rc->addr_len = fromlen;
- rc->plugin = plugin;
- rc->defrag =
- GNUNET_DEFRAGMENT_context_create (plugin->env->stats, UDP_MTU,
- UDP_MAX_MESSAGES_IN_DEFRAG, rc,
- &fragment_msg_proc, &ack_proc);
- rc->hnode =
- GNUNET_CONTAINER_heap_insert (plugin->defrags, rc,
- (GNUNET_CONTAINER_HeapCostType)
- now.abs_value);
- }
-#if DEBUG_UDP
- LOG (GNUNET_ERROR_TYPE_DEBUG, "UDP processes %u-byte fragment from `%s'\n",
- (unsigned int) ntohs (msg->size),
- GNUNET_a2s ((const struct sockaddr *) addr, fromlen));
-#endif
- if (GNUNET_OK == GNUNET_DEFRAGMENT_process_fragment (rc->defrag, msg))
- {
- /* keep this 'rc' from expiring */
- GNUNET_CONTAINER_heap_update_cost (plugin->defrags, rc->hnode,
- (GNUNET_CONTAINER_HeapCostType)
- now.abs_value);
- }
- if (GNUNET_CONTAINER_heap_get_size (plugin->defrags) >
- UDP_MAX_SENDER_ADDRESSES_WITH_DEFRAG)
- {
- /* remove 'rc' that was inactive the longest */
- rc = GNUNET_CONTAINER_heap_remove_root (plugin->defrags);
- GNUNET_assert (NULL != rc);
- GNUNET_DEFRAGMENT_context_destroy (rc->defrag);
- GNUNET_free (rc);
- }
+ case GNUNET_MESSAGE_TYPE_FRAGMENT:
+ read_process_fragment (plugin, msg, addr, fromlen);
return;
+
default:
GNUNET_break_op (0);
return;
}
}
-
-/**
- * We have been notified that our writeset has something to read. We don't
- * know which socket needs to be read, so we have to check each one
- * Then reschedule this function to be called again once more is available.
- *
- * @param cls the plugin handle
- * @param tc the scheduling context (for rescheduling this function again)
- */
-static void
-udp_plugin_select (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct Plugin *plugin = cls;
-
- plugin->select_task = GNUNET_SCHEDULER_NO_TASK;
- if ((tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
- return;
- if ((NULL != plugin->sockv4) &&
- (GNUNET_NETWORK_fdset_isset (tc->read_ready, plugin->sockv4)))
- udp_read (plugin, plugin->sockv4);
- if ((NULL != plugin->sockv6) &&
- (GNUNET_NETWORK_fdset_isset (tc->read_ready, plugin->sockv6)))
- udp_read (plugin, plugin->sockv6);
- plugin->select_task =
- GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
- GNUNET_SCHEDULER_NO_TASK,
- GNUNET_TIME_UNIT_FOREVER_REL, plugin->rs,
- NULL, &udp_plugin_select, plugin);
-
-}
-
-
-void
-broadcast_ipv4_mst_cb (void *cls, void *client,
- const struct GNUNET_MessageHeader *message)
-{
- struct Plugin *plugin = cls;
- struct Mstv4Context *mc = client;
- const struct GNUNET_MessageHeader *hello;
- struct UDP_Beacon_Message *msg;
-
- msg = (struct UDP_Beacon_Message *) message;
-
- if (GNUNET_MESSAGE_TYPE_TRANSPORT_BROADCAST_BEACON !=
- ntohs (msg->header.type))
- return;
-
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Received beacon with %u bytes from peer `%s' via address `%s'\n",
- ntohs (msg->header.size), GNUNET_i2s (&msg->sender),
- udp_address_to_string (NULL, &mc->addr, sizeof (mc->addr)));
-
- struct GNUNET_ATS_Information atsi[2];
-
- /* setup ATS */
- atsi[0].type = htonl (GNUNET_ATS_QUALITY_NET_DISTANCE);
- atsi[0].value = htonl (1);
- atsi[1].type = htonl (GNUNET_ATS_NETWORK_TYPE);
- atsi[1].value = mc->ats_address_network_type;
- GNUNET_break (ntohl(mc->ats_address_network_type) != GNUNET_ATS_NET_UNSPECIFIED);
-
- hello = (struct GNUNET_MessageHeader *) &msg[1];
- plugin->env->receive (plugin->env->cls, &msg->sender, hello,
- (const struct GNUNET_ATS_Information *) &atsi, 2, NULL,
- (const char *) &mc->addr, sizeof (mc->addr));
-
- GNUNET_STATISTICS_update (plugin->env->stats,
- _
- ("# IPv4 broadcast HELLO beacons received via udp"),
- 1, GNUNET_NO);
- GNUNET_free (mc);
-}
-
-
-void
-broadcast_ipv6_mst_cb (void *cls, void *client,
- const struct GNUNET_MessageHeader *message)
+size_t
+udp_select_send (struct Plugin *plugin)
{
+ ssize_t sent;
+ size_t slen;
+ struct GNUNET_TIME_Absolute max;
+ struct GNUNET_TIME_Absolute ;
- struct Plugin *plugin = cls;
- struct Mstv6Context *mc = client;
- const struct GNUNET_MessageHeader *hello;
- struct UDP_Beacon_Message *msg;
-
- msg = (struct UDP_Beacon_Message *) message;
-
- if (GNUNET_MESSAGE_TYPE_TRANSPORT_BROADCAST_BEACON !=
- ntohs (msg->header.type))
- return;
-
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Received beacon with %u bytes from peer `%s' via address `%s'\n",
- ntohs (msg->header.size), GNUNET_i2s (&msg->sender),
- udp_address_to_string (NULL, &mc->addr, sizeof (mc->addr)));
-
- struct GNUNET_ATS_Information atsi[2];
-
- /* setup ATS */
- atsi[0].type = htonl (GNUNET_ATS_QUALITY_NET_DISTANCE);
- atsi[0].value = htonl (1);
- atsi[1].type = htonl (GNUNET_ATS_NETWORK_TYPE);
- atsi[1].value = mc->ats_address_network_type;
- GNUNET_break (ntohl(mc->ats_address_network_type) != GNUNET_ATS_NET_UNSPECIFIED);
-
- hello = (struct GNUNET_MessageHeader *) &msg[1];
- plugin->env->receive (plugin->env->cls, &msg->sender, hello,
- (const struct GNUNET_ATS_Information *) &atsi, 2, NULL,
- (const char *) &mc->addr, sizeof (mc->addr));
-
- GNUNET_STATISTICS_update (plugin->env->stats,
- _
- ("# IPv6 multicast HELLO beacons received via udp"),
- 1, GNUNET_NO);
- GNUNET_free (mc);
-}
-
-
-static void
-udp_ipv4_broadcast_send (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct Plugin *plugin = cls;
- int sent;
- uint16_t msg_size;
- uint16_t hello_size;
- char buf[65536];
+ struct UDPMessageWrapper *udpw = plugin->msg_head;
+ const struct sockaddr * sa = udpw->session->sock_addr;
- const struct GNUNET_MessageHeader *hello;
- struct UDP_Beacon_Message *msg;
- struct BroadcastAddress *baddr;
+ max = GNUNET_TIME_absolute_max(udpw->timeout, GNUNET_TIME_absolute_get());
- plugin->send_ipv4_broadcast_task = GNUNET_SCHEDULER_NO_TASK;
+ while (udpw != NULL)
+ {
+ if (max.abs_value != udpw->timeout.abs_value)
+ {
+ /* Message timed out */
- hello = plugin->env->get_our_hello ();
- hello_size = GNUNET_HELLO_size ((struct GNUNET_HELLO_Message *) hello);
- msg_size = hello_size + sizeof (struct UDP_Beacon_Message);
+ if (udpw->cont != NULL)
+ udpw->cont (udpw->cont_cls, &udpw->session->target, GNUNET_SYSERR);
+ if (udpw->frag_ctx != NULL)
+ {
+#if DEBUG_UDP
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Fragmented message for peer `%s' with size %u timed out\n",
+ GNUNET_i2s(&udpw->session->target), udpw->frag_ctx->bytes_to_send);
+#endif
+ udpw->session->last_expected_delay = GNUNET_FRAGMENT_context_destroy(udpw->frag_ctx->frag);
+ GNUNET_free (udpw->frag_ctx);
+ udpw->session->frag_ctx = NULL;
+ }
+ else
+ {
+#if DEBUG_UDP
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Message for peer `%s' with size %u timed out\n",
+ GNUNET_i2s(&udpw->session->target), udpw->msg_size);
+#endif
+ }
- if (hello_size < (sizeof (struct GNUNET_MessageHeader)) ||
- (msg_size > (UDP_MTU)))
- return;
+ GNUNET_CONTAINER_DLL_remove(plugin->msg_head, plugin->msg_tail, udpw);
+ GNUNET_free (udpw);
+ udpw = plugin->msg_head;
+ }
+ else
+ {
+ struct GNUNET_TIME_Relative delta = GNUNET_TIME_absolute_get_remaining (udpw->session->flow_delay_from_other_peer);
+ if (delta.rel_value == 0)
+ {
+ /* this message is not delayed */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Message for peer `%s' (%u bytes) is not delayed \n",
+ GNUNET_i2s(&udpw->session->target), udpw->msg_size);
+ break;
+ }
+ else
+ {
+ /* this message is delayed, try next */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Message for peer `%s' (%u bytes) is delayed for %llu \n",
+ GNUNET_i2s(&udpw->session->target), udpw->msg_size,
+ delta);
+ udpw = udpw->next;
+ }
+ }
- msg = (struct UDP_Beacon_Message *) buf;
- msg->sender = *(plugin->env->my_identity);
- msg->header.size = ntohs (msg_size);
- msg->header.type = ntohs (GNUNET_MESSAGE_TYPE_TRANSPORT_BROADCAST_BEACON);
- memcpy (&msg[1], hello, hello_size);
- sent = 0;
+ }
- baddr = plugin->ipv4_broadcast_head;
- /* just IPv4 */
- while ((baddr != NULL) && (baddr->addrlen == sizeof (struct sockaddr_in)))
+ if (udpw == NULL)
{
- struct sockaddr_in *addr = (struct sockaddr_in *) baddr->addr;
-
- addr->sin_port = htons (plugin->port);
+ /* No message left */
+ return 0;
+ }
+ switch (sa->sa_family)
+ {
+ case AF_INET:
+ if (NULL == plugin->sockv4)
+ return 0;
sent =
- GNUNET_NETWORK_socket_sendto (plugin->sockv4, msg, msg_size,
- (const struct sockaddr *) addr,
- baddr->addrlen);
- if (sent == GNUNET_SYSERR)
- GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "sendto");
- else
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Sent HELLO beacon broadcast with %i bytes to address %s\n", sent,
- GNUNET_a2s (baddr->addr, baddr->addrlen));
- baddr = baddr->next;
+ GNUNET_NETWORK_socket_sendto (plugin->sockv4, udpw->udp, udpw->msg_size,
+ sa, slen = sizeof (struct sockaddr_in));
+ break;
+ case AF_INET6:
+ if (NULL == plugin->sockv6)
+ return 0;
+ sent =
+ GNUNET_NETWORK_socket_sendto (plugin->sockv6, udpw->udp, udpw->msg_size,
+ sa, slen = sizeof (struct sockaddr_in6));
+ break;
+ default:
+ GNUNET_break (0);
+ return 0;
}
-
- plugin->send_ipv4_broadcast_task =
- GNUNET_SCHEDULER_add_delayed (plugin->broadcast_interval,
- &udp_ipv4_broadcast_send, plugin);
-}
-
-static void
-udp_ipv6_broadcast_send (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct Plugin *plugin = cls;
- int sent;
- uint16_t msg_size;
- uint16_t hello_size;
- char buf[65536];
-
- const struct GNUNET_MessageHeader *hello;
- struct UDP_Beacon_Message *msg;
-
- plugin->send_ipv6_broadcast_task = GNUNET_SCHEDULER_NO_TASK;
-
- hello = plugin->env->get_our_hello ();
- hello_size = GNUNET_HELLO_size ((struct GNUNET_HELLO_Message *) hello);
- msg_size = hello_size + sizeof (struct UDP_Beacon_Message);
-
- if (hello_size < (sizeof (struct GNUNET_MessageHeader)) ||
- (msg_size > (UDP_MTU)))
- return;
-
- msg = (struct UDP_Beacon_Message *) buf;
- msg->sender = *(plugin->env->my_identity);
- msg->header.size = ntohs (msg_size);
- msg->header.type = ntohs (GNUNET_MESSAGE_TYPE_TRANSPORT_BROADCAST_BEACON);
- memcpy (&msg[1], hello, hello_size);
- sent = 0;
-
- sent =
- GNUNET_NETWORK_socket_sendto (plugin->sockv6, msg, msg_size,
- (const struct sockaddr *)
- &plugin->ipv6_multicast_address,
- sizeof (struct sockaddr_in6));
- if (sent == GNUNET_SYSERR)
+ if (GNUNET_SYSERR == sent)
+ {
GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "sendto");
- else
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Sending IPv6 HELLO beacon broadcast with %i bytes to address %s\n",
- sent,
- GNUNET_a2s ((const struct sockaddr *) &plugin->ipv6_multicast_address,
- sizeof (struct sockaddr_in6)));
-
-
-
- plugin->send_ipv6_broadcast_task =
- GNUNET_SCHEDULER_add_delayed (plugin->broadcast_interval,
- &udp_ipv6_broadcast_send, plugin);
-}
+ "UDP transmitted %u-byte message to %s (%d: %s)\n",
+ (unsigned int) (udpw->msg_size), GNUNET_a2s (sa, slen), (int) sent,
+ (sent < 0) ? STRERROR (errno) : "ok");
+ if (udpw->cont != NULL)
+ udpw->cont (udpw->cont_cls, &udpw->session->target, GNUNET_SYSERR);
+ }
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "UDP transmitted %u-byte message to %s (%d: %s)\n",
+ (unsigned int) (udpw->msg_size), GNUNET_a2s (sa, slen), (int) sent,
+ (sent < 0) ? STRERROR (errno) : "ok");
-/**
- * Check if the given port is plausible (must be either our listen
- * port or our advertised port). If it is neither, we return
- * GNUNET_SYSERR.
- *
- * @param plugin global variables
- * @param in_port port number to check
- * @return GNUNET_OK if port is either open_port or adv_port
- */
-static int
-check_port (struct Plugin *plugin, uint16_t in_port)
-{
- if ((in_port == plugin->port) || (in_port == plugin->aport))
- return GNUNET_OK;
- return GNUNET_SYSERR;
-}
-
-
-/**
- * Function that will be called to check if a binary address for this
- * plugin is well-formed and corresponds to an address for THIS peer
- * (as per our configuration). Naturally, if absolutely necessary,
- * plugins can be a bit conservative in their answer, but in general
- * plugins should make sure that the address does not redirect
- * traffic to a 3rd party that might try to man-in-the-middle our
- * traffic.
- *
- * @param cls closure, should be our handle to the Plugin
- * @param addr pointer to the address
- * @param addrlen length of addr
- * @return GNUNET_OK if this is a plausible address for this peer
- * and transport, GNUNET_SYSERR if not
- *
- */
-static int
-udp_plugin_check_address (void *cls, const void *addr, size_t addrlen)
-{
- struct Plugin *plugin = cls;
- struct IPv4UdpAddress *v4;
- struct IPv6UdpAddress *v6;
-
- if ((addrlen != sizeof (struct IPv4UdpAddress)) &&
- (addrlen != sizeof (struct IPv6UdpAddress)))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- if (addrlen == sizeof (struct IPv4UdpAddress))
- {
- v4 = (struct IPv4UdpAddress *) addr;
- if (GNUNET_OK != check_port (plugin, ntohs (v4->u4_port)))
- return GNUNET_SYSERR;
- if (GNUNET_OK !=
- GNUNET_NAT_test_address (plugin->nat, &v4->ipv4_addr,
- sizeof (struct in_addr)))
- return GNUNET_SYSERR;
- }
- else
- {
- v6 = (struct IPv6UdpAddress *) addr;
- if (IN6_IS_ADDR_LINKLOCAL (&v6->ipv6_addr))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- if (GNUNET_OK != check_port (plugin, ntohs (v6->u6_port)))
- return GNUNET_SYSERR;
- if (GNUNET_OK !=
- GNUNET_NAT_test_address (plugin->nat, &v6->ipv6_addr,
- sizeof (struct in6_addr)))
- return GNUNET_SYSERR;
- }
- return GNUNET_OK;
-}
-
-
-/**
- * Function called for a quick conversion of the binary address to
- * a numeric address. Note that the caller must not free the
- * address and that the next call to this function is allowed
- * to override the address again.
- *
- * @param cls closure
- * @param addr binary address
- * @param addrlen length of the address
- * @return string representing the same address
- */
-static const char *
-udp_address_to_string (void *cls, const void *addr, size_t addrlen)
-{
- static char rbuf[INET6_ADDRSTRLEN + 10];
- char buf[INET6_ADDRSTRLEN];
- const void *sb;
- struct in_addr a4;
- struct in6_addr a6;
- const struct IPv4UdpAddress *t4;
- const struct IPv6UdpAddress *t6;
- int af;
- uint16_t port;
-
- if (addrlen == sizeof (struct IPv6UdpAddress))
- {
- t6 = addr;
- af = AF_INET6;
- port = ntohs (t6->u6_port);
- memcpy (&a6, &t6->ipv6_addr, sizeof (a6));
- sb = &a6;
- }
- else if (addrlen == sizeof (struct IPv4UdpAddress))
- {
- t4 = addr;
- af = AF_INET;
- port = ntohs (t4->u4_port);
- memcpy (&a4, &t4->ipv4_addr, sizeof (a4));
- sb = &a4;
- }
- else
- {
- GNUNET_break_op (0);
- return NULL;
- }
- inet_ntop (af, sb, buf, INET6_ADDRSTRLEN);
- GNUNET_snprintf (rbuf, sizeof (rbuf), (af == AF_INET6) ? "[%s]:%u" : "%s:%u",
- buf, port);
- return rbuf;
-}
-
-
-/**
- * Closure for 'append_port'.
- */
-struct PrettyPrinterContext
-{
- /**
- * Function to call with the result.
- */
- GNUNET_TRANSPORT_AddressStringCallback asc;
-
- /**
- * Clsoure for 'asc'.
- */
- void *asc_cls;
-
- /**
- * Port to add after the IP address.
- */
- uint16_t port;
-};
-
-
-/**
- * Append our port and forward the result.
- *
- * @param cls a 'struct PrettyPrinterContext'
- * @param hostname result from DNS resolver
- */
-static void
-append_port (void *cls, const char *hostname)
-{
- struct PrettyPrinterContext *ppc = cls;
- char *ret;
-
- if (hostname == NULL)
- {
- ppc->asc (ppc->asc_cls, NULL);
- GNUNET_free (ppc);
- return;
- }
- GNUNET_asprintf (&ret, "%s:%d", hostname, ppc->port);
- ppc->asc (ppc->asc_cls, ret);
- GNUNET_free (ret);
-}
-
-
-/**
- * Convert the transports address to a nice, human-readable
- * format.
- *
- * @param cls closure
- * @param type name of the transport that generated the address
- * @param addr one of the addresses of the host, NULL for the last address
- * the specific address format depends on the transport
- * @param addrlen length of the address
- * @param numeric should (IP) addresses be displayed in numeric form?
- * @param timeout after how long should we give up?
- * @param asc function to call on each string
- * @param asc_cls closure for asc
- */
-static void
-udp_plugin_address_pretty_printer (void *cls, const char *type,
- const void *addr, size_t addrlen,
- int numeric,
- struct GNUNET_TIME_Relative timeout,
- GNUNET_TRANSPORT_AddressStringCallback asc,
- void *asc_cls)
-{
- struct PrettyPrinterContext *ppc;
- const void *sb;
- size_t sbs;
- struct sockaddr_in a4;
- struct sockaddr_in6 a6;
- const struct IPv4UdpAddress *u4;
- const struct IPv6UdpAddress *u6;
- uint16_t port;
-
- if (addrlen == sizeof (struct IPv6UdpAddress))
- {
- u6 = addr;
- memset (&a6, 0, sizeof (a6));
- a6.sin6_family = AF_INET6;
-#if HAVE_SOCKADDR_IN_SIN_LEN
- a6.sin6_len = sizeof (a6);
-#endif
- a6.sin6_port = u6->u6_port;
- memcpy (&a6.sin6_addr, &u6->ipv6_addr, sizeof (struct in6_addr));
- port = ntohs (u6->u6_port);
- sb = &a6;
- sbs = sizeof (a6);
- }
- else if (addrlen == sizeof (struct IPv4UdpAddress))
- {
- u4 = addr;
- memset (&a4, 0, sizeof (a4));
- a4.sin_family = AF_INET;
-#if HAVE_SOCKADDR_IN_SIN_LEN
- a4.sin_len = sizeof (a4);
-#endif
- a4.sin_port = u4->u4_port;
- a4.sin_addr.s_addr = u4->ipv4_addr;
- port = ntohs (u4->u4_port);
- sb = &a4;
- sbs = sizeof (a4);
- }
- else
+ /* This was just a message fragment */
+ if (udpw->frag_ctx != NULL)
{
- /* invalid address */
- GNUNET_break_op (0);
- asc (asc_cls, NULL);
- return;
+ GNUNET_FRAGMENT_context_transmission_done (udpw->frag_ctx->frag);
}
- ppc = GNUNET_malloc (sizeof (struct PrettyPrinterContext));
- ppc->asc = asc;
- ppc->asc_cls = asc_cls;
- ppc->port = port;
- GNUNET_RESOLVER_hostname_get (sb, sbs, !numeric, timeout, &append_port, ppc);
-}
-
-
-/**
- * Our external IP address/port mapping has changed.
- *
- * @param cls closure, the 'struct LocalAddrList'
- * @param add_remove GNUNET_YES to mean the new public IP address, GNUNET_NO to mean
- * the previous (now invalid) one
- * @param addr either the previous or the new public IP address
- * @param addrlen actual lenght of the address
- */
-static void
-udp_nat_port_map_callback (void *cls, int add_remove,
- const struct sockaddr *addr, socklen_t addrlen)
-{
- struct Plugin *plugin = cls;
- struct IPv4UdpAddress u4;
- struct IPv6UdpAddress u6;
- void *arg;
- size_t args;
-
- /* convert 'addr' to our internal format */
- switch (addr->sa_family)
- {
- case AF_INET:
- GNUNET_assert (addrlen == sizeof (struct sockaddr_in));
- u4.ipv4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
- u4.u4_port = ((struct sockaddr_in *) addr)->sin_port;
- arg = &u4;
- args = sizeof (u4);
- break;
- case AF_INET6:
- GNUNET_assert (addrlen == sizeof (struct sockaddr_in6));
- memcpy (&u6.ipv6_addr, &((struct sockaddr_in6 *) addr)->sin6_addr,
- sizeof (struct in6_addr));
- u6.u6_port = ((struct sockaddr_in6 *) addr)->sin6_port;
- arg = &u6;
- args = sizeof (u6);
- break;
- default:
- GNUNET_break (0);
- return;
- }
- /* modify our published address list */
- plugin->env->notify_address (plugin->env->cls, add_remove, arg, args);
-}
-
-
-static int
-iface_proc (void *cls, const char *name, int isDefault,
- const struct sockaddr *addr, const struct sockaddr *broadcast_addr,
- const struct sockaddr *netmask, socklen_t addrlen)
-{
- struct Plugin *plugin = cls;
-
- if (addr != NULL)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "address %s for interface %s %p\n ",
- GNUNET_a2s (addr, addrlen), name, addr);
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "broadcast address %s for interface %s %p\n ",
- GNUNET_a2s (broadcast_addr, addrlen), name, broadcast_addr);
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "netmask %s for interface %s %p\n ",
- GNUNET_a2s (netmask, addrlen), name, netmask);
-
-
- /* Collecting broadcast addresses */
- if (broadcast_addr != NULL)
- {
- struct BroadcastAddress *ba =
- GNUNET_malloc (sizeof (struct BroadcastAddress));
- ba->addr = GNUNET_malloc (addrlen);
- memcpy (ba->addr, broadcast_addr, addrlen);
- ba->addrlen = addrlen;
- GNUNET_CONTAINER_DLL_insert (plugin->ipv4_broadcast_head,
- plugin->ipv4_broadcast_tail, ba);
- }
- }
- return GNUNET_OK;
-}
-
-
-/**
- * The exported method. Makes the core api available via a global and
- * returns the udp transport API.
- *
- * @param cls our 'struct GNUNET_TRANSPORT_PluginEnvironment'
- * @return our 'struct GNUNET_TRANSPORT_PluginFunctions'
- */
-void *
-libgnunet_plugin_transport_udp_init (void *cls)
-{
- struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
- unsigned long long port;
- unsigned long long aport;
- struct GNUNET_TRANSPORT_PluginFunctions *api;
- struct Plugin *plugin;
- int sockets_created;
- int broadcast;
- struct GNUNET_TIME_Relative interval;
- struct sockaddr_in serverAddrv4;
- struct sockaddr_in6 serverAddrv6;
- struct sockaddr *serverAddr;
- struct sockaddr *addrs[2];
- socklen_t addrlens[2];
- socklen_t addrlen;
- unsigned int tries;
- unsigned long long udp_max_bps;
-
- if (GNUNET_OK !=
- GNUNET_CONFIGURATION_get_value_number (env->cfg, "transport-udp", "PORT",
- &port))
- port = 2086;
-
- broadcast =
- GNUNET_CONFIGURATION_get_value_yesno (env->cfg, "transport-udp",
- "BROADCAST");
- if (broadcast == GNUNET_SYSERR)
- broadcast = GNUNET_NO;
-
- if (GNUNET_SYSERR ==
- GNUNET_CONFIGURATION_get_value_time (env->cfg, "transport-udp",
- "BROADCAST_INTERVAL", &interval))
- interval = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 10);
-
- if (GNUNET_OK !=
- GNUNET_CONFIGURATION_get_value_number (env->cfg, "transport-udp",
- "MAX_BPS", &udp_max_bps))
- udp_max_bps = 1024 * 1024 * 50; /* 50 MB/s == infinity for practical purposes */
- if (GNUNET_OK !=
- GNUNET_CONFIGURATION_get_value_number (env->cfg, "transport-udp",
- "ADVERTISED_PORT", &aport))
- aport = port;
- if (port > 65535)
- {
- LOG (GNUNET_ERROR_TYPE_WARNING,
- _("Given `%s' option is out of range: %llu > %u\n"), "PORT", port,
- 65535);
- return NULL;
+ /* This was a complete message*/
+ else
+ {
+ if (udpw->cont != NULL)
+ udpw->cont (udpw->cont_cls, &udpw->session->target, GNUNET_OK);
}
- memset (&serverAddrv6, 0, sizeof (serverAddrv6));
- memset (&serverAddrv4, 0, sizeof (serverAddrv4));
- plugin = GNUNET_malloc (sizeof (struct Plugin));
- GNUNET_BANDWIDTH_tracker_init (&plugin->tracker,
- GNUNET_BANDWIDTH_value_init ((uint32_t)
- udp_max_bps), 30);
- plugin->last_expected_delay = GNUNET_TIME_UNIT_SECONDS;
- plugin->port = port;
- plugin->aport = aport;
- plugin->env = env;
- plugin->broadcast_interval = interval;
- api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
- api->cls = plugin;
+ GNUNET_CONTAINER_DLL_remove(plugin->msg_head, plugin->msg_tail, udpw);
+ GNUNET_free (udpw);
- api->send = &udp_plugin_send_old;
- api->disconnect = &udp_disconnect;
- api->address_pretty_printer = &udp_plugin_address_pretty_printer;
- api->address_to_string = &udp_address_to_string;
- api->check_address = &udp_plugin_check_address;
+ return sent;
+}
- api->get_session = &udp_plugin_get_session;
- api->send_with_session = &udp_plugin_send;
+/**
+ * We have been notified that our readset has something to read. We don't
+ * know which socket needs to be read, so we have to check each one
+ * Then reschedule this function to be called again once more is available.
+ *
+ * @param cls the plugin handle
+ * @param tc the scheduling context (for rescheduling this function again)
+ */
+static void
+udp_plugin_select (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct Plugin *plugin = cls;
- if (GNUNET_YES ==
- GNUNET_CONFIGURATION_get_value_string (env->cfg, "transport-udp",
- "BINDTO", &plugin->bind4_address))
+ plugin->select_task = GNUNET_SCHEDULER_NO_TASK;
+ if ((tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
+ return;
+
+ if ((tc->reason & GNUNET_SCHEDULER_REASON_READ_READY) != 0)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Binding udp plugin to specific address: `%s'\n",
- plugin->bind4_address);
- if (1 != inet_pton (AF_INET, plugin->bind4_address, &serverAddrv4.sin_addr))
- {
- GNUNET_free (plugin->bind4_address);
- GNUNET_free (plugin);
- GNUNET_free (api);
- return NULL;
- }
+ if ((NULL != plugin->sockv4) &&
+ (GNUNET_NETWORK_fdset_isset (tc->read_ready, plugin->sockv4)))
+ udp_select_read (plugin, plugin->sockv4);
+ if ((NULL != plugin->sockv6) &&
+ (GNUNET_NETWORK_fdset_isset (tc->read_ready, plugin->sockv6)))
+ udp_select_read (plugin, plugin->sockv6);
}
- if (GNUNET_YES ==
- GNUNET_CONFIGURATION_get_value_string (env->cfg, "transport-udp",
- "BINDTO6", &plugin->bind6_address))
+ if ((tc->reason & GNUNET_SCHEDULER_REASON_WRITE_READY) != 0)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Binding udp plugin to specific address: `%s'\n",
- plugin->bind6_address);
- if (1 !=
- inet_pton (AF_INET6, plugin->bind6_address, &serverAddrv6.sin6_addr))
- {
- LOG (GNUNET_ERROR_TYPE_ERROR, _("Invalid IPv6 address: `%s'\n"),
- plugin->bind6_address);
- GNUNET_free_non_null (plugin->bind4_address);
- GNUNET_free (plugin->bind6_address);
- GNUNET_free (plugin);
- GNUNET_free (api);
- return NULL;
- }
+ if (plugin->msg_head != NULL)
+ udp_select_send (plugin);
}
- plugin->defrags =
- GNUNET_CONTAINER_heap_create (GNUNET_CONTAINER_HEAP_ORDER_MIN);
- plugin->sessions =
- GNUNET_CONTAINER_multihashmap_create (UDP_MAX_SENDER_ADDRESSES_WITH_DEFRAG
- * 2);
- plugin->inbound_sessions =
- GNUNET_CONTAINER_multihashmap_create (UDP_MAX_SENDER_ADDRESSES_WITH_DEFRAG
- * 2);
- sockets_created = 0;
- if ((GNUNET_YES !=
- GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, "nat",
- "DISABLEV6")))
+ plugin->select_task = GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
+ GNUNET_SCHEDULER_NO_TASK,
+ GNUNET_TIME_UNIT_FOREVER_REL, plugin->rs,
+ plugin->ws, &udp_plugin_select, plugin);
+
+}
+
+
+static int
+setup_sockets (struct Plugin *plugin, struct sockaddr_in6 *serverAddrv6, struct sockaddr_in *serverAddrv4)
+{
+ int tries;
+ int sockets_created = 0;
+ struct sockaddr *serverAddr;
+ struct sockaddr *addrs[2];
+ socklen_t addrlens[2];
+ socklen_t addrlen;
+
+ /* Create IPv6 socket */
+ if (plugin->enable_ipv6 == GNUNET_YES)
{
plugin->sockv6 = GNUNET_NETWORK_socket_create (PF_INET6, SOCK_DGRAM, 0);
if (NULL == plugin->sockv6)
#if HAVE_SOCKADDR_IN_SIN_LEN
serverAddrv6.sin6_len = sizeof (serverAddrv6);
#endif
- serverAddrv6.sin6_family = AF_INET6;
- serverAddrv6.sin6_addr = in6addr_any;
- serverAddrv6.sin6_port = htons (plugin->port);
- addrlen = sizeof (serverAddrv6);
- serverAddr = (struct sockaddr *) &serverAddrv6;
+ serverAddrv6->sin6_family = AF_INET6;
+ serverAddrv6->sin6_addr = in6addr_any;
+ serverAddrv6->sin6_port = htons (plugin->port);
+ addrlen = sizeof (struct sockaddr_in6);
+ serverAddr = (struct sockaddr *) serverAddrv6;
#if DEBUG_UDP
LOG (GNUNET_ERROR_TYPE_DEBUG, "Binding to IPv6 port %d\n",
- ntohs (serverAddrv6.sin6_port));
+ ntohs (serverAddrv6->sin6_port));
#endif
tries = 0;
while (GNUNET_NETWORK_socket_bind (plugin->sockv6, serverAddr, addrlen) !=
GNUNET_OK)
{
- serverAddrv6.sin6_port = htons (GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_STRONG, 33537) + 32000); /* Find a good, non-root port */
+ serverAddrv6->sin6_port = htons (GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_STRONG, 33537) + 32000); /* Find a good, non-root port */
#if DEBUG_UDP
LOG (GNUNET_ERROR_TYPE_DEBUG,
"IPv6 Binding failed, trying new port %d\n",
- ntohs (serverAddrv6.sin6_port));
+ ntohs (serverAddrv6->sin6_port));
#endif
tries++;
if (tries > 10)
}
if (plugin->sockv6 != NULL)
{
- addrs[sockets_created] = (struct sockaddr *) &serverAddrv6;
- addrlens[sockets_created] = sizeof (serverAddrv6);
+#if DEBUG_UDP
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "IPv6 socket created on port %d\n",
+ ntohs (serverAddrv6->sin6_port));
+#endif
+ addrs[sockets_created] = (struct sockaddr *) serverAddrv6;
+ addrlens[sockets_created] = sizeof (struct sockaddr_in6);
sockets_created++;
}
}
}
- plugin->mst =
- GNUNET_SERVER_mst_create (&process_inbound_tokenized_messages, plugin);
+ /* Create IPv4 socket */
plugin->sockv4 = GNUNET_NETWORK_socket_create (PF_INET, SOCK_DGRAM, 0);
if (NULL == plugin->sockv4)
{
#if HAVE_SOCKADDR_IN_SIN_LEN
serverAddrv4.sin_len = sizeof (serverAddrv4);
#endif
- serverAddrv4.sin_family = AF_INET;
- serverAddrv4.sin_addr.s_addr = INADDR_ANY;
- serverAddrv4.sin_port = htons (plugin->port);
- addrlen = sizeof (serverAddrv4);
- serverAddr = (struct sockaddr *) &serverAddrv4;
+ serverAddrv4->sin_family = AF_INET;
+ serverAddrv4->sin_addr.s_addr = INADDR_ANY;
+ serverAddrv4->sin_port = htons (plugin->port);
+ addrlen = sizeof (struct sockaddr_in);
+ serverAddr = (struct sockaddr *) serverAddrv4;
+
#if DEBUG_UDP
LOG (GNUNET_ERROR_TYPE_DEBUG, "Binding to IPv4 port %d\n",
- ntohs (serverAddrv4.sin_port));
+ ntohs (serverAddrv4->sin_port));
#endif
tries = 0;
while (GNUNET_NETWORK_socket_bind (plugin->sockv4, serverAddr, addrlen) !=
GNUNET_OK)
{
- serverAddrv4.sin_port = htons (GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_STRONG, 33537) + 32000); /* Find a good, non-root port */
+ serverAddrv4->sin_port = htons (GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_STRONG, 33537) + 32000); /* Find a good, non-root port */
#if DEBUG_UDP
LOG (GNUNET_ERROR_TYPE_DEBUG, "IPv4 Binding failed, trying new port %d\n",
- ntohs (serverAddrv4.sin_port));
+ ntohs (serverAddrv4->sin_port));
#endif
tries++;
if (tries > 10)
}
if (plugin->sockv4 != NULL)
{
- addrs[sockets_created] = (struct sockaddr *) &serverAddrv4;
- addrlens[sockets_created] = sizeof (serverAddrv4);
+ addrs[sockets_created] = (struct sockaddr *) serverAddrv4;
+ addrlens[sockets_created] = sizeof (struct sockaddr_in);
sockets_created++;
}
}
+ /* Create file descriptors */
plugin->rs = GNUNET_NETWORK_fdset_create ();
+ plugin->ws = GNUNET_NETWORK_fdset_create ();
GNUNET_NETWORK_fdset_zero (plugin->rs);
+ GNUNET_NETWORK_fdset_zero (plugin->ws);
if (NULL != plugin->sockv4)
+ {
GNUNET_NETWORK_fdset_set (plugin->rs, plugin->sockv4);
+ GNUNET_NETWORK_fdset_set (plugin->ws, plugin->sockv4);
+ }
if (NULL != plugin->sockv6)
+ {
GNUNET_NETWORK_fdset_set (plugin->rs, plugin->sockv6);
+ GNUNET_NETWORK_fdset_set (plugin->ws, plugin->sockv6);
+ }
+
+ if (sockets_created == 0)
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _("Failed to open UDP sockets\n"));
plugin->select_task =
GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
GNUNET_SCHEDULER_NO_TASK,
GNUNET_TIME_UNIT_FOREVER_REL, plugin->rs,
- NULL, &udp_plugin_select, plugin);
-
-
-
- if (broadcast)
- {
- /* create IPv4 broadcast socket */
- plugin->broadcast_ipv4 = GNUNET_NO;
- if (plugin->sockv4 != NULL)
- {
- int yes = 1;
-
- if (GNUNET_NETWORK_socket_setsockopt
- (plugin->sockv4, SOL_SOCKET, SO_BROADCAST, &yes,
- sizeof (int)) != GNUNET_OK)
- {
- LOG (GNUNET_ERROR_TYPE_WARNING,
- _
- ("Failed to set IPv4 broadcast option for broadcast socket on port %d\n"),
- ntohs (serverAddrv4.sin_port));
- }
- else
- {
- GNUNET_OS_network_interfaces_list (iface_proc, plugin);
- plugin->send_ipv4_broadcast_task =
- GNUNET_SCHEDULER_add_now (&udp_ipv4_broadcast_send, plugin);
-
- plugin->broadcast_ipv4_mst =
- GNUNET_SERVER_mst_create (broadcast_ipv4_mst_cb, plugin);
-
- LOG (GNUNET_ERROR_TYPE_DEBUG, "IPv4 Broadcasting running\n");
- plugin->broadcast_ipv4 = GNUNET_YES;
- }
- }
-
- plugin->broadcast_ipv6 = GNUNET_NO;
- if (plugin->sockv6 != NULL)
- {
- memset (&plugin->ipv6_multicast_address, 0, sizeof (struct sockaddr_in6));
- GNUNET_assert (1 ==
- inet_pton (AF_INET6, "FF05::13B",
- &plugin->ipv6_multicast_address.sin6_addr));
-
- plugin->ipv6_multicast_address.sin6_family = AF_INET6;
- plugin->ipv6_multicast_address.sin6_port = htons (plugin->port);
-
- plugin->broadcast_ipv6_mst =
- GNUNET_SERVER_mst_create (broadcast_ipv6_mst_cb, plugin);
-
- /* Create IPv6 multicast request */
- struct ipv6_mreq multicastRequest;
-
- multicastRequest.ipv6mr_multiaddr =
- plugin->ipv6_multicast_address.sin6_addr;
- /* TODO: 0 selects the "best" interface, tweak to use all interfaces
- *
- * http://tools.ietf.org/html/rfc2553#section-5.2:
- *
- * IPV6_JOIN_GROUP
- *
- * Join a multicast group on a specified local interface. If the
- * interface index is specified as 0, the kernel chooses the local
- * interface. For example, some kernels look up the multicast
- * group in the normal IPv6 routing table and using the resulting
- * interface.
- * */
- multicastRequest.ipv6mr_interface = 0;
-
- /* Join the multicast group */
- if (GNUNET_NETWORK_socket_setsockopt
- (plugin->sockv6, IPPROTO_IPV6, IPV6_JOIN_GROUP,
- (char *) &multicastRequest, sizeof (multicastRequest)) != GNUNET_OK)
- {
- LOG (GNUNET_ERROR_TYPE_WARNING,
- "Failed to join IPv6 multicast group: IPv6 broadcasting not running\n");
- }
- else
- {
-#if DEBUG_UDP
- LOG (GNUNET_ERROR_TYPE_DEBUG, "IPv6 broadcasting running\n");
-#endif
- plugin->send_ipv6_broadcast_task =
- GNUNET_SCHEDULER_add_now (&udp_ipv6_broadcast_send, plugin);
- plugin->broadcast_ipv6 = GNUNET_YES;
- }
- }
- }
+ plugin->ws, &udp_plugin_select, plugin);
- if (sockets_created == 0)
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _("Failed to open UDP sockets\n"));
- plugin->nat =
- GNUNET_NAT_register (env->cfg, GNUNET_NO, port, sockets_created,
+ plugin->nat = GNUNET_NAT_register (plugin->env->cfg,
+ GNUNET_NO, plugin->port,
+ sockets_created,
(const struct sockaddr **) addrs, addrlens,
&udp_nat_port_map_callback, NULL, plugin);
- return api;
+
+ return sockets_created;
}
+
/**
- * Shutdown the plugin.
+ * The exported method. Makes the core api available via a global and
+ * returns the udp transport API.
*
- * @param cls our 'struct GNUNET_TRANSPORT_PluginFunctions'
- * @return NULL
+ * @param cls our 'struct GNUNET_TRANSPORT_PluginEnvironment'
+ * @return our 'struct GNUNET_TRANSPORT_PluginFunctions'
*/
void *
-libgnunet_plugin_transport_udp_done (void *cls)
+libgnunet_plugin_transport_udp_init (void *cls)
{
- struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
- struct Plugin *plugin = api->cls;
- struct ReceiveContext *rc;
+ struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
+ struct GNUNET_TRANSPORT_PluginFunctions *api;
+ struct Plugin *plugin;
- /* FIXME: clean up heap and hashmap */
- GNUNET_CONTAINER_multihashmap_iterate (plugin->sessions, &destroy_session,
- NULL);
- GNUNET_CONTAINER_multihashmap_destroy (plugin->sessions);
- plugin->sessions = NULL;
- GNUNET_CONTAINER_multihashmap_iterate (plugin->inbound_sessions,
- &destroy_inbound_session, NULL);
- GNUNET_CONTAINER_multihashmap_destroy (plugin->inbound_sessions);
- plugin->inbound_sessions = NULL;
- while (NULL != (rc = GNUNET_CONTAINER_heap_remove_root (plugin->defrags)))
+ unsigned long long port;
+ unsigned long long aport;
+ unsigned long long broadcast;
+ unsigned long long udp_max_bps;
+ unsigned long long enable_v6;
+ char * bind4_address;
+ char * bind6_address;
+ struct GNUNET_TIME_Relative interval;
+
+ struct sockaddr_in serverAddrv4;
+ struct sockaddr_in6 serverAddrv6;
+
+ int res;
+
+ /* Get port number */
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_number (env->cfg, "transport-udp", "PORT",
+ &port))
+ port = 2086;
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_number (env->cfg, "transport-udp",
+ "ADVERTISED_PORT", &aport))
+ aport = port;
+ if (port > 65535)
{
- GNUNET_DEFRAGMENT_context_destroy (rc->defrag);
- GNUNET_free (rc);
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ _("Given `%s' option is out of range: %llu > %u\n"), "PORT", port,
+ 65535);
+ return NULL;
}
- GNUNET_CONTAINER_heap_destroy (plugin->defrags);
- if (plugin->select_task != GNUNET_SCHEDULER_NO_TASK)
+ /* Protocols */
+ if ((GNUNET_YES ==
+ GNUNET_CONFIGURATION_get_value_yesno (env->cfg, "nat",
+ "DISABLEV6")))
{
- GNUNET_SCHEDULER_cancel (plugin->select_task);
- plugin->select_task = GNUNET_SCHEDULER_NO_TASK;
+ enable_v6 = GNUNET_NO;
}
+ else
+ enable_v6 = GNUNET_YES;
+
+
+ /* Addresses */
+ memset (&serverAddrv6, 0, sizeof (serverAddrv6));
+ memset (&serverAddrv4, 0, sizeof (serverAddrv4));
- if (plugin->broadcast_ipv4)
+ if (GNUNET_YES ==
+ GNUNET_CONFIGURATION_get_value_string (env->cfg, "transport-udp",
+ "BINDTO", &bind4_address))
{
- if (plugin->send_ipv4_broadcast_task != GNUNET_SCHEDULER_NO_TASK)
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Binding udp plugin to specific address: `%s'\n",
+ bind4_address);
+ if (1 != inet_pton (AF_INET, bind4_address, &serverAddrv4.sin_addr))
{
- GNUNET_SCHEDULER_cancel (plugin->send_ipv4_broadcast_task);
- plugin->send_ipv4_broadcast_task = GNUNET_SCHEDULER_NO_TASK;
+ GNUNET_free (bind4_address);
+ return NULL;
}
+ }
- if (plugin->broadcast_ipv4_mst != NULL)
- GNUNET_SERVER_mst_destroy (plugin->broadcast_ipv4_mst);
-
- while (plugin->ipv4_broadcast_head != NULL)
+ if (GNUNET_YES ==
+ GNUNET_CONFIGURATION_get_value_string (env->cfg, "transport-udp",
+ "BINDTO6", &bind6_address))
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Binding udp plugin to specific address: `%s'\n",
+ bind6_address);
+ if (1 !=
+ inet_pton (AF_INET6, bind6_address, &serverAddrv6.sin6_addr))
{
- struct BroadcastAddress *p = plugin->ipv4_broadcast_head;
-
- GNUNET_CONTAINER_DLL_remove (plugin->ipv4_broadcast_head,
- plugin->ipv4_broadcast_tail, p);
- GNUNET_free (p->addr);
- GNUNET_free (p);
+ LOG (GNUNET_ERROR_TYPE_ERROR, _("Invalid IPv6 address: `%s'\n"),
+ bind6_address);
+ GNUNET_free_non_null (bind4_address);
+ GNUNET_free (bind6_address);
+ return NULL;
}
}
- if (plugin->broadcast_ipv6)
+
+ /* Enable neighbour discovery */
+ broadcast = GNUNET_CONFIGURATION_get_value_yesno (env->cfg, "transport-udp",
+ "BROADCAST");
+ if (broadcast == GNUNET_SYSERR)
+ broadcast = GNUNET_NO;
+
+ if (GNUNET_SYSERR == GNUNET_CONFIGURATION_get_value_time (env->cfg, "transport-udp",
+ "BROADCAST_INTERVAL", &interval))
{
- /* Create IPv6 multicast request */
- struct ipv6_mreq multicastRequest;
+ interval = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 10);
+ }
- multicastRequest.ipv6mr_multiaddr =
- plugin->ipv6_multicast_address.sin6_addr;
- multicastRequest.ipv6mr_interface = 0;
+ /* Maximum datarate */
+ if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number (env->cfg, "transport-udp",
+ "MAX_BPS", &udp_max_bps))
+ {
+ udp_max_bps = 1024 * 1024 * 50; /* 50 MB/s == infinity for practical purposes */
+ }
- /* Join the multicast address */
- if (GNUNET_NETWORK_socket_setsockopt
- (plugin->sockv6, IPPROTO_IPV6, IPV6_LEAVE_GROUP,
- (char *) &multicastRequest, sizeof (multicastRequest)) != GNUNET_OK)
- {
- GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, setsockopt);
- }
- else
- {
-#if DEBUG_UDP
- LOG (GNUNET_ERROR_TYPE_DEBUG, "IPv6 Broadcasting stopped\n");
-#endif
- }
+ plugin = GNUNET_malloc (sizeof (struct Plugin));
+ api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
- if (plugin->send_ipv6_broadcast_task != GNUNET_SCHEDULER_NO_TASK)
- {
- GNUNET_SCHEDULER_cancel (plugin->send_ipv6_broadcast_task);
- plugin->send_ipv6_broadcast_task = GNUNET_SCHEDULER_NO_TASK;
- }
- if (plugin->broadcast_ipv6_mst != NULL)
- GNUNET_SERVER_mst_destroy (plugin->broadcast_ipv6_mst);
+ GNUNET_BANDWIDTH_tracker_init (&plugin->tracker,
+ GNUNET_BANDWIDTH_value_init ((uint32_t)udp_max_bps), 30);
+
+
+ plugin->sessions = GNUNET_CONTAINER_multihashmap_create (10);
+ plugin->defrag_ctxs = GNUNET_CONTAINER_heap_create (GNUNET_CONTAINER_HEAP_ORDER_MIN);
+ plugin->mst = GNUNET_SERVER_mst_create (&process_inbound_tokenized_messages, plugin);
+ plugin->port = port;
+ plugin->aport = aport;
+ plugin->broadcast_interval = interval;
+ plugin->enable_ipv6 = enable_v6;
+ plugin->env = env;
+
+ api->cls = plugin;
+ api->send = NULL;
+ api->disconnect = &udp_disconnect;
+ api->address_pretty_printer = &udp_plugin_address_pretty_printer;
+ api->address_to_string = &udp_address_to_string;
+ api->check_address = &udp_plugin_check_address;
+ api->get_session = &udp_plugin_get_session;
+ api->send = &udp_plugin_send_wrapper;
+ api->send_with_session = &udp_plugin_send;
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Setting up sockets\n");
+ res = setup_sockets (plugin, &serverAddrv6, &serverAddrv4);
+ if ((res == 0) || ((plugin->sockv4 == NULL) && (plugin->sockv6 == NULL)))
+ {
+ LOG (GNUNET_ERROR_TYPE_ERROR, "Failed to create network sockets, plugin failed\n");
+ GNUNET_free (plugin);
+ GNUNET_free (api);
+ return NULL;
}
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Starting broadcasting\n");
+ if (broadcast == GNUNET_YES)
+ setup_broadcast (plugin, &serverAddrv6, &serverAddrv4);
+
+
+ GNUNET_free_non_null (bind4_address);
+ GNUNET_free_non_null (bind6_address);
+ return api;
+}
+
+int heap_cleanup_iterator (void *cls,
+ struct GNUNET_CONTAINER_HeapNode *
+ node, void *element,
+ GNUNET_CONTAINER_HeapCostType
+ cost)
+{
+ struct DefragContext * d_ctx = element;
+
+ GNUNET_CONTAINER_heap_remove_node (node);
+ GNUNET_DEFRAGMENT_context_destroy(d_ctx->defrag);
+ GNUNET_free (d_ctx);
+
+ return GNUNET_YES;
+}
+
+
+/**
+ * The exported method. Makes the core api available via a global and
+ * returns the udp transport API.
+ *
+ * @param cls our 'struct GNUNET_TRANSPORT_PluginEnvironment'
+ * @return our 'struct GNUNET_TRANSPORT_PluginFunctions'
+ */
+void *
+libgnunet_plugin_transport_udp_done (void *cls)
+{
+ struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
+ struct Plugin *plugin = api->cls;
+ stop_broadcast (plugin);
+
+ if (plugin->select_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (plugin->select_task);
+ plugin->select_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ /* Closing sockets */
if (plugin->sockv4 != NULL)
{
GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (plugin->sockv4));
GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (plugin->sockv6));
plugin->sockv6 = NULL;
}
-
- GNUNET_SERVER_mst_destroy (plugin->mst);
GNUNET_NETWORK_fdset_destroy (plugin->rs);
-
+ GNUNET_NETWORK_fdset_destroy (plugin->ws);
GNUNET_NAT_unregister (plugin->nat);
+
+ if (plugin->defrag_ctxs != NULL)
+ {
+ GNUNET_CONTAINER_heap_iterate(plugin->defrag_ctxs,
+ heap_cleanup_iterator, NULL);
+ GNUNET_CONTAINER_heap_destroy(plugin->defrag_ctxs);
+ plugin->defrag_ctxs = NULL;
+ }
+ if (plugin->mst != NULL)
+ {
+ GNUNET_SERVER_mst_destroy(plugin->mst);
+ plugin->mst = NULL;
+ }
+
+ /* Clean up leftover messages */
+ struct UDPMessageWrapper *udpw = plugin->msg_head;
+ while (udpw != NULL)
+ {
+ struct UDPMessageWrapper *tmp = udpw->next;
+ GNUNET_CONTAINER_DLL_remove(plugin->msg_head, plugin->msg_tail, udpw);
+ if (udpw->cont != NULL)
+ udpw->cont (udpw->cont_cls, &udpw->session->target, GNUNET_SYSERR);
+ GNUNET_free (udpw);
+ udpw = tmp;
+ }
+
+ /* Clean up sessions */
+#if DEBUG_UDP
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Cleaning up sessions\n");
+#endif
+ GNUNET_CONTAINER_multihashmap_iterate (plugin->sessions, &disconnect_and_free_it, plugin);
+ GNUNET_CONTAINER_multihashmap_destroy (plugin->sessions);
+
plugin->nat = NULL;
GNUNET_free (plugin);
GNUNET_free (api);
return NULL;
}
+
/* end of plugin_transport_udp.c */
projects / oweals / gnunet.git / commitdiff