#include "gnunet_ats_service.h"
#include "ats.h"
+#define DEBUG_ATS GNUNET_EXTRA_LOGGING
+
+#define INTERFACE_PROCESSING_INTERVALL GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 1)
/**
* Message in linked list we should send to the ATS service. The
/**
* Kept in a DLL.
- */
+ */
struct PendingMessage *next;
/**
* Kept in a DLL.
- */
+ */
struct PendingMessage *prev;
/**
/**
* Is this the 'ATS_START' message?
- */
+ */
int is_init;
};
+/**
+ * Information we track per session.
+ */
+struct SessionRecord
+{
+ /**
+ * Identity of the peer (just needed for error checking).
+ */
+ struct GNUNET_PeerIdentity peer;
+
+ /**
+ * Session handle.
+ */
+ struct Session *session;
+
+ /**
+ * Set to GNUNET_YES if the slot is used.
+ */
+ int slot_used;
+};
+
+
+struct ATS_Network
+{
+ struct ATS_Network * next;
+
+ struct ATS_Network * prev;
+
+ struct sockaddr *network;
+ struct sockaddr *netmask;
+ socklen_t length;
+};
+
+
+
/**
* Handle to the ATS subsystem for bandwidth/transport scheduling information.
*/
struct GNUNET_ATS_SchedulingHandle
{
-
+
/**
* Our configuration.
*/
* Callback to invoke on suggestions.
*/
GNUNET_ATS_AddressSuggestionCallback suggest_cb;
-
+
/**
* Closure for 'suggest_cb'.
*/
*/
struct GNUNET_CLIENT_TransmitHandle *th;
+ /**
+ * Head of network list
+ */
+ struct ATS_Network * net_head;
+
+ /**
+ * Tail of network list
+ */
+ struct ATS_Network * net_tail;
+
+
/**
* Array of session objects (we need to translate them to numbers and back
* for the protocol; the offset in the array is the session number on the
* network). Index 0 is always NULL and reserved to represent the NULL pointer.
* Unused entries are also NULL.
*/
- struct Session **session_array;
+ struct SessionRecord *session_array;
/**
* Task to trigger reconnect.
- */
+ */
GNUNET_SCHEDULER_TaskIdentifier task;
-
+
+ /**
+ * Task retrieving interfaces from the system
+ */
+
+ GNUNET_SCHEDULER_TaskIdentifier interface_task;
+
+
/**
* Size of the session array.
*/
unsigned int session_array_size;
+ /**
+ * Should we reconnect to ATS due to some serious error?
+ */
+ int reconnect;
};
reconnect (struct GNUNET_ATS_SchedulingHandle *sh);
-
/**
* Re-establish the connection to the ATS service.
*
* @param tc scheduler context
*/
static void
-reconnect_task (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+reconnect_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct GNUNET_ATS_SchedulingHandle *sh = cls;
}
+/**
+ * Disconnect from ATS and then reconnect.
+ *
+ * @param sh our handle
+ */
+static void
+force_reconnect (struct GNUNET_ATS_SchedulingHandle *sh)
+{
+ sh->reconnect = GNUNET_NO;
+ GNUNET_CLIENT_disconnect (sh->client, GNUNET_NO);
+ sh->client = NULL;
+ sh->task =
+ GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS, &reconnect_task,
+ sh);
+}
+
+
/**
* Transmit messages from the message queue to the service
* (if there are any, and if we are not already trying).
* @param msg message received, NULL on timeout or fatal error
*/
static void
-process_ats_message (void *cls,
- const struct GNUNET_MessageHeader *msg);
+process_ats_message (void *cls, const struct GNUNET_MessageHeader *msg);
/**
* @return number of bytes copied into buf
*/
static size_t
-transmit_message_to_ats (void *cls,
- size_t size,
- void *buf)
+transmit_message_to_ats (void *cls, size_t size, void *buf)
{
struct GNUNET_ATS_SchedulingHandle *sh = cls;
struct PendingMessage *p;
char *cbuf;
sh->th = NULL;
+ if ((size == 0) || (buf == NULL))
+ {
+ force_reconnect (sh);
+ return 0;
+ }
ret = 0;
cbuf = buf;
- while ( (NULL != (p = sh->pending_head)) &&
- (p->size <= size) )
+ while ((NULL != (p = sh->pending_head)) && (p->size <= size))
{
- memcpy (&cbuf[ret], &p[1], p->size);
+ memcpy (&cbuf[ret], &p[1], p->size);
ret += p->size;
size -= p->size;
- GNUNET_CONTAINER_DLL_remove (sh->pending_head,
- sh->pending_tail,
- p);
+ GNUNET_CONTAINER_DLL_remove (sh->pending_head, sh->pending_tail, p);
if (GNUNET_YES == p->is_init)
- GNUNET_CLIENT_receive (sh->client,
- &process_ats_message, sh,
- GNUNET_TIME_UNIT_FOREVER_REL);
+ GNUNET_CLIENT_receive (sh->client, &process_ats_message, sh,
+ GNUNET_TIME_UNIT_FOREVER_REL);
GNUNET_free (p);
}
do_transmit (sh);
return;
if (NULL == (p = sh->pending_head))
return;
- sh->th = GNUNET_CLIENT_notify_transmit_ready (sh->client,
- p->size,
- GNUNET_TIME_UNIT_FOREVER_REL,
- GNUNET_YES,
- &transmit_message_to_ats, sh);
+ if (NULL == sh->client)
+ return; /* currently reconnecting */
+ sh->th =
+ GNUNET_CLIENT_notify_transmit_ready (sh->client, p->size,
+ GNUNET_TIME_UNIT_FOREVER_REL,
+ GNUNET_NO, &transmit_message_to_ats,
+ sh);
}
*
* @param sh our handle
* @param session_id current session ID
+ * @param peer peer the session belongs to
* @return the session object (or NULL)
*/
-static struct Session*
-find_session (struct GNUNET_ATS_SchedulingHandle *sh,
- uint32_t session_id)
+static struct Session *
+find_session (struct GNUNET_ATS_SchedulingHandle *sh, uint32_t session_id,
+ const struct GNUNET_PeerIdentity *peer)
{
+#if DEBUG_ATS
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Find session %u from peer %s in %p\n",
+ (unsigned int) session_id, GNUNET_i2s (peer), sh);
+#endif
if (session_id >= sh->session_array_size)
{
GNUNET_break (0);
return NULL;
}
- return sh->session_array[session_id];
+ if (0 == session_id)
+ return NULL;
+ if (sh->session_array[session_id].session == NULL)
+ {
+ GNUNET_break (0 ==
+ memcmp (peer, &sh->session_array[session_id].peer,
+ sizeof (struct GNUNET_PeerIdentity)));
+ return NULL;
+ }
+
+ if (0 !=
+ memcmp (peer, &sh->session_array[session_id].peer,
+ sizeof (struct GNUNET_PeerIdentity)))
+ {
+ GNUNET_break (0);
+ sh->reconnect = GNUNET_YES;
+ return NULL;
+ }
+ return sh->session_array[session_id].session;
}
*
* @param sh our handle
* @param session session object
+ * @param peer peer the session belongs to
* @return the session id
*/
-static uint32_t
-get_session_id (struct GNUNET_ATS_SchedulingHandle *sh,
- struct Session *session)
+static uint32_t
+get_session_id (struct GNUNET_ATS_SchedulingHandle *sh, struct Session *session,
+ const struct GNUNET_PeerIdentity *peer)
{
unsigned int i;
unsigned int f;
-
+
+#if DEBUG_ATS
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Get session ID for session %p from peer %s in %p\n", session,
+ GNUNET_i2s (peer), sh);
+#endif
+ if (NULL == session)
+ return 0;
f = 0;
- for (i=1;i<sh->session_array_size;i++)
+ for (i = 1; i < sh->session_array_size; i++)
{
- if (session == sh->session_array[i])
+ if (session == sh->session_array[i].session)
+ {
+ GNUNET_assert (0 ==
+ memcmp (peer, &sh->session_array[i].peer,
+ sizeof (struct GNUNET_PeerIdentity)));
return i;
- if ( (f == 0) &&
- (sh->session_array[i] == NULL) )
+ }
+ if ((f == 0) && (sh->session_array[i].slot_used == GNUNET_NO))
f = i;
}
if (f == 0)
{
f = sh->session_array_size;
- GNUNET_array_grow (sh->session_array,
- sh->session_array_size,
- sh->session_array_size * 2);
+ GNUNET_array_grow (sh->session_array, sh->session_array_size,
+ sh->session_array_size * 2);
}
- sh->session_array[f] = session;
+ GNUNET_assert (f > 0);
+ sh->session_array[f].session = session;
+ sh->session_array[f].peer = *peer;
+ sh->session_array[f].slot_used = GNUNET_YES;
+#if DEBUG_ATS
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Assigning session ID %u for session %p of peer %s in %p\n", f,
+ session, GNUNET_i2s (peer), sh);
+#endif
return f;
}
*
* @param sh our handle
* @param session_id identifies session that is no longer valid
+ * @param peer peer the session belongs to
*/
static void
-remove_session (struct GNUNET_ATS_SchedulingHandle *sh,
- uint32_t session_id)
+remove_session (struct GNUNET_ATS_SchedulingHandle *sh, uint32_t session_id,
+ const struct GNUNET_PeerIdentity *peer)
{
+#if DEBUG_ATS
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Remove sessionID %u from peer %s in %p\n",
+ (unsigned int) session_id, GNUNET_i2s (peer), sh);
+#endif
+ if (0 == session_id)
+ return;
GNUNET_assert (session_id < sh->session_array_size);
- sh->session_array[session_id] = NULL;
+ GNUNET_assert (GNUNET_YES == sh->session_array[session_id].slot_used);
+ GNUNET_assert (0 ==
+ memcmp (peer, &sh->session_array[session_id].peer,
+ sizeof (struct GNUNET_PeerIdentity)));
+ sh->session_array[session_id].session = NULL;
+}
+
+
+/**
+ * Release the session slot from the session table (ATS service is
+ * also done using it).
+ *
+ * @param sh our handle
+ * @param session_id identifies session that is no longer valid
+ * @param peer peer the session belongs to
+ */
+static void
+release_session (struct GNUNET_ATS_SchedulingHandle *sh, uint32_t session_id,
+ const struct GNUNET_PeerIdentity *peer)
+{
+#if DEBUG_ATS
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Release sessionID %u from peer %s in %p\n",
+ (unsigned int) session_id, GNUNET_i2s (peer), sh);
+#endif
+ if (session_id >= sh->session_array_size)
+ {
+ GNUNET_break (0);
+ sh->reconnect = GNUNET_YES;
+ return;
+ }
+
+ /* this slot should have been removed from remove_session before */
+ GNUNET_assert (sh->session_array[session_id].session == NULL);
+
+ if (0 !=
+ memcmp (peer, &sh->session_array[session_id].peer,
+ sizeof (struct GNUNET_PeerIdentity)))
+ {
+ GNUNET_break (0);
+ sh->reconnect = GNUNET_YES;
+ return;
+ }
+ sh->session_array[session_id].slot_used = GNUNET_NO;
+ memset (&sh->session_array[session_id].peer, 0,
+ sizeof (struct GNUNET_PeerIdentity));
+}
+
+
+static void
+process_release_message (struct GNUNET_ATS_SchedulingHandle *sh,
+ const struct SessionReleaseMessage *srm)
+{
+ release_session (sh, ntohl (srm->session_id), &srm->peer);
}
* @param msg message received, NULL on timeout or fatal error
*/
static void
-process_ats_message (void *cls,
- const struct GNUNET_MessageHeader *msg)
+process_ats_message (void *cls, const struct GNUNET_MessageHeader *msg)
{
struct GNUNET_ATS_SchedulingHandle *sh = cls;
const struct AddressSuggestionMessage *m;
- const struct GNUNET_TRANSPORT_ATS_Information *atsi;
- const char *address;
+ const struct GNUNET_ATS_Information *atsi;
+ const char *plugin_address;
const char *plugin_name;
- uint16_t address_length;
+ uint16_t plugin_address_length;
uint16_t plugin_name_length;
uint32_t ats_count;
+ struct GNUNET_HELLO_Address address;
+ struct Session *s;
- if (NULL == msg)
+ if (NULL == msg)
{
- GNUNET_CLIENT_disconnect (sh->client, GNUNET_NO);
- sh->client = NULL;
- sh->task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS,
- &reconnect_task, sh);
+ force_reconnect (sh);
return;
}
- if ( (ntohs (msg->type) != GNUNET_MESSAGE_TYPE_ATS_ADDRESS_SUGGESTION) ||
- (ntohs (msg->size) <= sizeof (struct AddressSuggestionMessage)) )
+ if ((ntohs (msg->type) == GNUNET_MESSAGE_TYPE_ATS_SESSION_RELEASE) &&
+ (ntohs (msg->size) == sizeof (struct SessionReleaseMessage)))
+ {
+ process_release_message (sh, (const struct SessionReleaseMessage *) msg);
+ GNUNET_CLIENT_receive (sh->client, &process_ats_message, sh,
+ GNUNET_TIME_UNIT_FOREVER_REL);
+ if (GNUNET_YES == sh->reconnect)
+ force_reconnect (sh);
+ return;
+ }
+ if ((ntohs (msg->type) != GNUNET_MESSAGE_TYPE_ATS_ADDRESS_SUGGESTION) ||
+ (ntohs (msg->size) <= sizeof (struct AddressSuggestionMessage)))
{
GNUNET_break (0);
- GNUNET_CLIENT_disconnect (sh->client, GNUNET_NO);
- sh->client = NULL;
- sh->task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS,
- &reconnect_task, sh);
+ force_reconnect (sh);
return;
}
- m = (const struct AddressSuggestionMessage*) msg;
+ m = (const struct AddressSuggestionMessage *) msg;
ats_count = ntohl (m->ats_count);
- address_length = ntohs (m->address_length);
- atsi = (const struct GNUNET_TRANSPORT_ATS_Information*) &m[1];
- address = (const char*) &atsi[ats_count];
- plugin_name = &address[address_length];
+ plugin_address_length = ntohs (m->address_length);
+ atsi = (const struct GNUNET_ATS_Information *) &m[1];
+ plugin_address = (const char *) &atsi[ats_count];
+ plugin_name = &plugin_address[plugin_address_length];
plugin_name_length = ntohs (m->plugin_name_length);
- if ( (address_length +
- plugin_name_length +
- ats_count * sizeof (struct GNUNET_TRANSPORT_ATS_Information) +
- sizeof (struct AddressSuggestionMessage) != ntohs (msg->size)) ||
- (ats_count > GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_TRANSPORT_ATS_Information)) ||
- (plugin_name[plugin_name_length - 1] != '\0') )
+ if ((plugin_address_length + plugin_name_length +
+ ats_count * sizeof (struct GNUNET_ATS_Information) +
+ sizeof (struct AddressSuggestionMessage) != ntohs (msg->size)) ||
+ (ats_count >
+ GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_ATS_Information))
+ || (plugin_name[plugin_name_length - 1] != '\0'))
{
GNUNET_break (0);
- GNUNET_CLIENT_disconnect (sh->client, GNUNET_NO);
- sh->client = NULL;
- sh->task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS,
- &reconnect_task, sh);
+ force_reconnect (sh);
+ return;
+ }
+ uint32_t session_id = ntohl (m->session_id);
+
+ if (session_id == 0)
+ s = NULL;
+ else
+ {
+ s = find_session (sh, session_id, &m->peer);
+ if (s == NULL)
+ {
+#if DEBUG_ATS
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "ATS tries to use outdated session `%s'\n",
+ GNUNET_i2s (&m->peer));
+#endif
+ GNUNET_CLIENT_receive (sh->client, &process_ats_message, sh,
+ GNUNET_TIME_UNIT_FOREVER_REL);
+ return;
+ }
+ }
+ address.peer = m->peer;
+ address.address = plugin_address;
+ address.address_length = plugin_address_length;
+ address.transport_name = plugin_name;
+
+ if ((s == NULL) && (0 == address.address_length))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "ATS returned invalid address for peer `%s' transport `%s' address length %i, session_id %i\n",
+ GNUNET_i2s (&address.peer), address.transport_name,
+ plugin_address_length, session_id);
+ GNUNET_break_op (0);
+ GNUNET_CLIENT_receive (sh->client, &process_ats_message, sh,
+ GNUNET_TIME_UNIT_FOREVER_REL);
return;
}
- sh->suggest_cb (sh->suggest_cb_cls,
- &m->peer,
- plugin_name,
- address, address_length,
- find_session (sh, ntohl (m->session_id)),
- m->bandwidth_out,
- m->bandwidth_in,
- atsi,
- ats_count);
- GNUNET_CLIENT_receive (sh->client,
- &process_ats_message, sh,
- GNUNET_TIME_UNIT_FOREVER_REL);
+
+ sh->suggest_cb (sh->suggest_cb_cls, &address, s, m->bandwidth_out,
+ m->bandwidth_in, atsi, ats_count);
+
+ GNUNET_CLIENT_receive (sh->client, &process_ats_message, sh,
+ GNUNET_TIME_UNIT_FOREVER_REL);
+ if (GNUNET_YES == sh->reconnect)
+ force_reconnect (sh);
}
GNUNET_assert (NULL == sh->client);
sh->client = GNUNET_CLIENT_connect ("ats", sh->cfg);
GNUNET_assert (NULL != sh->client);
- if ( (NULL == (p = sh->pending_head)) ||
- (GNUNET_YES != p->is_init) )
+ if ((NULL == (p = sh->pending_head)) || (GNUNET_YES != p->is_init))
{
p = GNUNET_malloc (sizeof (struct PendingMessage) +
- sizeof (struct ClientStartMessage));
+ sizeof (struct ClientStartMessage));
p->size = sizeof (struct ClientStartMessage);
p->is_init = GNUNET_YES;
init = (struct ClientStartMessage *) &p[1];
init->header.type = htons (GNUNET_MESSAGE_TYPE_ATS_START);
init->header.size = htons (sizeof (struct ClientStartMessage));
init->start_flag = htonl (START_FLAG_SCHEDULING);
- GNUNET_CONTAINER_DLL_insert (sh->pending_head,
- sh->pending_tail,
- p);
+ GNUNET_CONTAINER_DLL_insert (sh->pending_head, sh->pending_tail, p);
}
do_transmit (sh);
}
+/**
+ * delete the current network list
+ */
+
+static void
+delete_networks (struct GNUNET_ATS_SchedulingHandle *sh)
+{
+ struct ATS_Network * cur = sh->net_head;
+ while (cur != NULL)
+ {
+ GNUNET_CONTAINER_DLL_remove(sh->net_head, sh->net_tail, cur);
+ GNUNET_free (cur);
+ cur = sh->net_head;
+ }
+}
+
+
+static int
+interface_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 GNUNET_ATS_SchedulingHandle * sh = cls;
+ /* Calculate network */
+ struct ATS_Network *net = NULL;
+
+ /* Skipping IPv4 loopback addresses since we have special check */
+ if (addr->sa_family == AF_INET)
+ {
+ struct sockaddr_in * a4 = (struct sockaddr_in *) addr;
+
+ if ((a4->sin_addr.s_addr & htonl(0xff000000)) == htonl (0x7f000000))
+ return GNUNET_OK;
+ }
+ /* Skipping IPv6 loopback addresses since we have special check */
+ if (addr->sa_family == AF_INET6)
+ {
+ struct sockaddr_in6 * a6 = (struct sockaddr_in6 *) addr;
+ if (IN6_IS_ADDR_LOOPBACK (&a6->sin6_addr))
+ return GNUNET_OK;
+ }
+
+ if (addr->sa_family == AF_INET)
+ {
+ struct sockaddr_in *addr4 = (struct sockaddr_in *) addr;
+ struct sockaddr_in *netmask4 = (struct sockaddr_in *) netmask;
+ struct sockaddr_in *tmp = NULL;
+ struct sockaddr_in network4;
+
+ net = GNUNET_malloc(sizeof (struct ATS_Network) + 2 * sizeof (struct sockaddr_in));
+ tmp = (struct sockaddr_in *) &net[1];
+ net->network = (struct sockaddr *) &tmp[0];
+ net->netmask = (struct sockaddr *) &tmp[1];
+ net->length = addrlen;
+
+ memset (&network4, 0, sizeof (network4));
+ network4.sin_family = AF_INET;
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ network4.sin_len = sizeof (network4);
+#endif
+ network4.sin_addr.s_addr = (addr4->sin_addr.s_addr & netmask4->sin_addr.s_addr);
+
+ memcpy (net->netmask, netmask4, sizeof (struct sockaddr_in));
+ memcpy (net->network, &network4, sizeof (struct sockaddr_in));
+ }
+
+ if (addr->sa_family == AF_INET6)
+ {
+ struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *) addr;
+ struct sockaddr_in6 *netmask6 = (struct sockaddr_in6 *) netmask;
+ struct sockaddr_in6 * tmp = NULL;
+ struct sockaddr_in6 network6;
+
+ net = GNUNET_malloc(sizeof (struct ATS_Network) + 2 * sizeof (struct sockaddr_in6));
+ tmp = (struct sockaddr_in6 *) &net[1];
+ net->network = (struct sockaddr *) &tmp[0];
+ net->netmask = (struct sockaddr *) &tmp[1];
+ net->length = addrlen;
+
+ memset (&network6, 0, sizeof (network6));
+ network6.sin6_family = AF_INET6;
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ network6.sin6_len = sizeof (network6);
+#endif
+ int c = 0;
+ uint32_t *addr_elem = (uint32_t *) &addr6->sin6_addr;
+ uint32_t *mask_elem = (uint32_t *) &netmask6->sin6_addr;
+ uint32_t *net_elem = (uint32_t *) &network6.sin6_addr;
+ for (c = 0; c < 4; c++)
+ net_elem[c] = addr_elem[c] & mask_elem[c];
+
+ memcpy (net->netmask, netmask6, sizeof (struct sockaddr_in6));
+ memcpy (net->network, &network6, sizeof (struct sockaddr_in6));
+ }
+
+ /* Store in list */
+ if (net != NULL)
+ {
+#if VERBOSE_ATS
+ char * netmask = GNUNET_strdup (GNUNET_a2s((struct sockaddr *) net->netmask, addrlen));
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Adding network `%s', netmask `%s'\n",
+ GNUNET_a2s((struct sockaddr *) net->network, addrlen),
+ netmask);
+ GNUNET_free (netmask);
+# endif
+ GNUNET_CONTAINER_DLL_insert(sh->net_head, sh->net_tail, net);
+ }
+ return GNUNET_OK;
+}
+
+
+
+/**
+ * Periodically get list of addresses
+ * @param cls closure
+ * @param tc Task context
+ */
+static void
+get_addresses (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct GNUNET_ATS_SchedulingHandle * sh = cls;
+ sh->interface_task = GNUNET_SCHEDULER_NO_TASK;
+ delete_networks (sh);
+ GNUNET_OS_network_interfaces_list(interface_proc, sh);
+ sh->interface_task = GNUNET_SCHEDULER_add_delayed (INTERFACE_PROCESSING_INTERVALL,
+ get_addresses,
+ sh);
+}
+
+/**
+ * Returns where the address is located: LAN or WAN or ...
+ * @param sh the scheduling handle
+ * @param addr address
+ * @param addrlen address length
+ * @return location as GNUNET_ATS_Information
+ */
+
+const struct GNUNET_ATS_Information
+GNUNET_ATS_address_get_type (struct GNUNET_ATS_SchedulingHandle * sh, const struct sockaddr * addr, socklen_t addrlen)
+{
+ GNUNET_assert (sh != NULL);
+ struct GNUNET_ATS_Information ats;
+ struct ATS_Network * cur = sh->net_head;
+ int type = GNUNET_ATS_NET_UNSPECIFIED;
+
+ if (addr->sa_family == AF_UNIX)
+ {
+ type = GNUNET_ATS_NET_LOOPBACK;
+ }
+
+ /* IPv4 loopback check */
+ if (addr->sa_family == AF_INET)
+ {
+ struct sockaddr_in * a4 = (struct sockaddr_in *) addr;
+
+ if ((a4->sin_addr.s_addr & htonl(0xff000000)) == htonl (0x7f000000))
+ type = GNUNET_ATS_NET_LOOPBACK;
+ }
+ /* IPv6 loopback check */
+ if (addr->sa_family == AF_INET6)
+ {
+ struct sockaddr_in6 * a6 = (struct sockaddr_in6 *) addr;
+ if (IN6_IS_ADDR_LOOPBACK (&a6->sin6_addr))
+ type = GNUNET_ATS_NET_LOOPBACK;
+ }
+
+ /* Check local networks */
+ while ((cur != NULL) && (type == GNUNET_ATS_NET_UNSPECIFIED))
+ {
+ if (addrlen != cur->length)
+ {
+ cur = cur->next;
+ continue;
+ }
+
+ if (addr->sa_family == AF_INET)
+ {
+ struct sockaddr_in * a4 = (struct sockaddr_in *) addr;
+ struct sockaddr_in * net4 = (struct sockaddr_in *) cur->network;
+ struct sockaddr_in * mask4 = (struct sockaddr_in *) cur->netmask;
+
+ if (((a4->sin_addr.s_addr & mask4->sin_addr.s_addr)) == net4->sin_addr.s_addr)
+ {
+ char * net = GNUNET_strdup (GNUNET_a2s ((const struct sockaddr *) net4, addrlen));
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "`%s' is in network `%s'\n",
+ GNUNET_a2s ((const struct sockaddr *)a4, addrlen),
+ net);
+ GNUNET_free (net);
+ type = GNUNET_ATS_NET_LAN;
+ }
+ }
+ if (addr->sa_family == AF_INET6)
+ {
+ struct sockaddr_in6 * a6 = (struct sockaddr_in6 *) addr;
+ struct sockaddr_in6 * net6 = (struct sockaddr_in6 *) cur->network;
+ struct sockaddr_in6 * mask6 = (struct sockaddr_in6 *) cur->netmask;
+
+ int res = GNUNET_YES;
+ int c = 0;
+ uint32_t *addr_elem = (uint32_t *) &a6->sin6_addr;
+ uint32_t *mask_elem = (uint32_t *) &mask6->sin6_addr;
+ uint32_t *net_elem = (uint32_t *) &net6->sin6_addr;
+ for (c = 0; c < 4; c++)
+ if ((addr_elem[c] & mask_elem[c]) != net_elem[c])
+ res = GNUNET_NO;
+
+ if (res == GNUNET_YES)
+ {
+ char * net = GNUNET_strdup (GNUNET_a2s ((const struct sockaddr *) net6, addrlen));
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "`%s' is in network `%s'\n",
+ GNUNET_a2s ((const struct sockaddr *) a6, addrlen),
+ net);
+ GNUNET_free (net);
+ type = GNUNET_ATS_NET_LAN;
+ }
+ }
+ cur = cur->next;
+ }
+
+ /* no local network found for this address, default: WAN */
+ if (type == GNUNET_ATS_NET_UNSPECIFIED)
+ type = GNUNET_ATS_NET_WAN;
+
+#if VERBOSE
+ const char * range;
+ switch (type) {
+ case GNUNET_ATS_NET_WAN:
+ range = "WAN";
+ break;
+ case GNUNET_ATS_NET_LAN:
+ range = "LAN";
+ break;
+ case GNUNET_ATS_NET_LOOPBACK:
+ range = "LOOPBACK";
+ break;
+ default:
+
+ break;
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "`%s' is in network `%s'\n",
+ GNUNET_a2s ((const struct sockaddr *) addr, addrlen),
+ range);
+#endif
+
+ ats.type = htonl (GNUNET_ATS_NETWORK_TYPE);
+ ats.value = htonl (type);
+ return (const struct GNUNET_ATS_Information) ats;
+}
/**
* Initialize the ATS subsystem.
*/
struct GNUNET_ATS_SchedulingHandle *
GNUNET_ATS_scheduling_init (const struct GNUNET_CONFIGURATION_Handle *cfg,
- GNUNET_ATS_AddressSuggestionCallback suggest_cb,
- void *suggest_cb_cls)
+ GNUNET_ATS_AddressSuggestionCallback suggest_cb,
+ void *suggest_cb_cls)
{
struct GNUNET_ATS_SchedulingHandle *sh;
sh->cfg = cfg;
sh->suggest_cb = suggest_cb;
sh->suggest_cb_cls = suggest_cb_cls;
- GNUNET_array_grow (sh->session_array,
- sh->session_array_size,
- 4);
+ GNUNET_array_grow (sh->session_array, sh->session_array_size, 4);
+ GNUNET_OS_network_interfaces_list(interface_proc, sh);
+ sh->interface_task = GNUNET_SCHEDULER_add_delayed (INTERFACE_PROCESSING_INTERVALL,
+ get_addresses,
+ sh);
reconnect (sh);
return sh;
}
while (NULL != (p = sh->pending_head))
{
- GNUNET_CONTAINER_DLL_remove (sh->pending_head,
- sh->pending_tail,
- p);
+ GNUNET_CONTAINER_DLL_remove (sh->pending_head, sh->pending_tail, p);
GNUNET_free (p);
}
if (NULL != sh->client)
GNUNET_SCHEDULER_cancel (sh->task);
sh->task = GNUNET_SCHEDULER_NO_TASK;
}
- GNUNET_array_grow (sh->session_array,
- sh->session_array_size,
- 0);
+
+ delete_networks (sh);
+ if (sh->interface_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel(sh->interface_task);
+ sh->interface_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ GNUNET_array_grow (sh->session_array, sh->session_array_size, 0);
GNUNET_free (sh);
+ sh = NULL;
}
struct RequestAddressMessage *m;
p = GNUNET_malloc (sizeof (struct PendingMessage) +
- sizeof (struct RequestAddressMessage));
+ sizeof (struct RequestAddressMessage));
p->size = sizeof (struct RequestAddressMessage);
p->is_init = GNUNET_NO;
- m = (struct RequestAddressMessage*) &p[1];
+ m = (struct RequestAddressMessage *) &p[1];
m->header.type = htons (GNUNET_MESSAGE_TYPE_ATS_REQUEST_ADDRESS);
m->header.size = htons (sizeof (struct RequestAddressMessage));
m->reserved = htonl (0);
m->peer = *peer;
- GNUNET_CONTAINER_DLL_insert_tail (sh->pending_head,
- sh->pending_tail,
- p);
+ GNUNET_CONTAINER_DLL_insert_tail (sh->pending_head, sh->pending_tail, p);
do_transmit (sh);
}
+/**
+ * We would like to stop receiving address updates for this peer
+ *
+ * @param sh handle
+ * @param peer identity of the peer
+ */
+void
+GNUNET_ATS_suggest_address_cancel (struct GNUNET_ATS_SchedulingHandle *sh,
+ const struct GNUNET_PeerIdentity *peer)
+{
+ struct PendingMessage *p;
+ struct RequestAddressMessage *m;
+
+ p = GNUNET_malloc (sizeof (struct PendingMessage) +
+ sizeof (struct RequestAddressMessage));
+ p->size = sizeof (struct RequestAddressMessage);
+ p->is_init = GNUNET_NO;
+ m = (struct RequestAddressMessage *) &p[1];
+ m->header.type = htons (GNUNET_MESSAGE_TYPE_ATS_REQUEST_ADDRESS_CANCEL);
+ m->header.size = htons (sizeof (struct RequestAddressMessage));
+ m->reserved = htonl (0);
+ m->peer = *peer;
+ GNUNET_CONTAINER_DLL_insert_tail (sh->pending_head, sh->pending_tail, p);
+ do_transmit (sh);
+}
+
/**
* We have updated performance statistics for a given address. Note
* that this function can be called for addresses that are currently
* for later use). Update bandwidth assignments.
*
* @param sh handle
- * @param peer identity of the new peer
- * @param plugin_name name of the transport plugin
- * @param plugin_addr address (if available)
- * @param plugin_addr_len number of bytes in plugin_addr
+ * @param address the address
* @param session session handle (if available)
* @param ats performance data for the address
* @param ats_count number of performance records in 'ats'
*/
void
GNUNET_ATS_address_update (struct GNUNET_ATS_SchedulingHandle *sh,
- const struct GNUNET_PeerIdentity *peer,
- const char *plugin_name,
- const void *plugin_addr, size_t plugin_addr_len,
- struct Session *session,
- const struct GNUNET_TRANSPORT_ATS_Information *ats,
+ const struct GNUNET_HELLO_Address *address,
+ struct Session *session,
+ const struct GNUNET_ATS_Information *ats,
uint32_t ats_count)
{
struct PendingMessage *p;
struct AddressUpdateMessage *m;
- struct GNUNET_TRANSPORT_ATS_Information *am;
+ struct GNUNET_ATS_Information *am;
char *pm;
size_t namelen;
size_t msize;
- namelen = (plugin_name == NULL) ? 0 : strlen (plugin_name) + 1;
- msize = sizeof (struct AddressUpdateMessage) + plugin_addr_len +
- ats_count * sizeof (struct GNUNET_TRANSPORT_ATS_Information) + namelen;
- if ( (msize >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
- (plugin_addr_len >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
- (namelen >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
- (ats_count >= GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_TRANSPORT_ATS_Information)) )
+ if (address == NULL)
{
GNUNET_break (0);
return;
}
- p = GNUNET_malloc (sizeof (struct PendingMessage) + msize);
+ if ((address == NULL) && (session == NULL))
+ {
+ GNUNET_break (0);
+ return;
+ }
+
+ namelen =
+ (address->transport_name ==
+ NULL) ? 0 : strlen (address->transport_name) + 1;
+ msize =
+ sizeof (struct AddressUpdateMessage) + address->address_length +
+ ats_count * sizeof (struct GNUNET_ATS_Information) + namelen;
+ if ((msize >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
+ (address->address_length >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
+ (namelen >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
+ (ats_count >=
+ GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_ATS_Information)))
+ {
+ GNUNET_break (0);
+ return;
+ }
+
+ p = GNUNET_malloc (sizeof (struct PendingMessage) + msize);
p->size = msize;
p->is_init = GNUNET_NO;
- m = (struct AddressUpdateMessage*) &p[1];
+ m = (struct AddressUpdateMessage *) &p[1];
m->header.type = htons (GNUNET_MESSAGE_TYPE_ATS_ADDRESS_UPDATE);
m->header.size = htons (msize);
m->ats_count = htonl (ats_count);
- m->peer = *peer;
- m->address_length = htons (plugin_addr_len);
+ m->peer = address->peer;
+ m->address_length = htons (address->address_length);
m->plugin_name_length = htons (namelen);
- m->session_id = htonl (get_session_id (sh, session));
- am = (struct GNUNET_TRANSPORT_ATS_Information*) &m[1];
- memcpy (am, ats, ats_count * sizeof (struct GNUNET_TRANSPORT_ATS_Information));
+ m->session_id = htonl (get_session_id (sh, session, &address->peer));
+ am = (struct GNUNET_ATS_Information *) &m[1];
+ memcpy (am, ats, ats_count * sizeof (struct GNUNET_ATS_Information));
pm = (char *) &am[ats_count];
- memcpy (pm, plugin_addr, plugin_addr_len);
- memcpy (&pm[plugin_addr_len], plugin_name, namelen);
- GNUNET_CONTAINER_DLL_insert_tail (sh->pending_head,
- sh->pending_tail,
- p);
+ memcpy (pm, address->address, address->address_length);
+ memcpy (&pm[address->address_length], address->transport_name, namelen);
+ GNUNET_CONTAINER_DLL_insert_tail (sh->pending_head, sh->pending_tail, p);
do_transmit (sh);
}
+/**
+ * An address is now in use or not used any more.
+ *
+ * @param sh handle
+ * @param address the address
+ * @param session session handle
+ * @param in_use GNUNET_YES if this address is now used, GNUNET_NO
+ * if address is not used any more
+ */
+void
+GNUNET_ATS_address_in_use (struct GNUNET_ATS_SchedulingHandle *sh,
+ const struct GNUNET_HELLO_Address *address,
+ struct Session *session, int in_use)
+{
+ struct PendingMessage *p;
+ struct AddressUseMessage *m;
+ char *pm;
+ size_t namelen;
+ size_t msize;
+
+ GNUNET_assert (NULL != address);
+ namelen =
+ (address->transport_name ==
+ NULL) ? 0 : strlen (address->transport_name) + 1;
+ msize = sizeof (struct AddressUseMessage) + address->address_length + namelen;
+ if ((msize >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
+ (address->address_length >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
+ (namelen >= GNUNET_SERVER_MAX_MESSAGE_SIZE))
+ {
+ GNUNET_break (0);
+ return;
+ }
+
+ p = GNUNET_malloc (sizeof (struct PendingMessage) + msize);
+ p->size = msize;
+ p->is_init = GNUNET_NO;
+ m = (struct AddressUseMessage *) &p[1];
+ m->header.type = htons (GNUNET_MESSAGE_TYPE_ATS_ADDRESS_IN_USE);
+ m->header.size = htons (msize);
+ m->peer = address->peer;
+ m->in_use = htons (in_use);
+ m->address_length = htons (address->address_length);
+ m->plugin_name_length = htons (namelen);
+ m->session_id = htonl (get_session_id (sh, session, &address->peer));
+ pm = (char *) &m[1];
+ memcpy (pm, address->address, address->address_length);
+ memcpy (&pm[address->address_length], address->transport_name, namelen);
+ GNUNET_CONTAINER_DLL_insert_tail (sh->pending_head, sh->pending_tail, p);
+
+ do_transmit (sh);
+}
+
/**
* A session got destroyed, stop including it as a valid address.
*
* @param sh handle
- * @param peer identity of the peer
- * @param plugin_name name of the transport plugin
- * @param plugin_addr address (if available)
- * @param plugin_addr_len number of bytes in plugin_addr
+ * @param address the address
* @param session session handle that is no longer valid
*/
void
GNUNET_ATS_address_destroyed (struct GNUNET_ATS_SchedulingHandle *sh,
- const struct GNUNET_PeerIdentity *peer,
- const char *plugin_name,
- const void *plugin_addr,
- size_t plugin_addr_len,
- struct Session *session)
+ const struct GNUNET_HELLO_Address *address,
+ struct Session *session)
{
struct PendingMessage *p;
struct AddressDestroyedMessage *m;
size_t msize;
uint32_t session_id;
- namelen = (plugin_name == NULL) ? 0 : strlen (plugin_name) + 1;
- msize = sizeof (struct AddressUpdateMessage) + plugin_addr_len +
- namelen;
- if ( (msize >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
- (plugin_addr_len >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
- (namelen >= GNUNET_SERVER_MAX_MESSAGE_SIZE) )
+ GNUNET_assert (address->transport_name != NULL);
+ namelen = strlen (address->transport_name) + 1;
+ GNUNET_assert (namelen > 1);
+ msize =
+ sizeof (struct AddressDestroyedMessage) + address->address_length +
+ namelen;
+ if ((msize >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
+ (address->address_length >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
+ (namelen >= GNUNET_SERVER_MAX_MESSAGE_SIZE))
{
GNUNET_break (0);
return;
}
- p = GNUNET_malloc (sizeof (struct PendingMessage) + msize);
+
+ p = GNUNET_malloc (sizeof (struct PendingMessage) + msize);
p->size = msize;
p->is_init = GNUNET_NO;
- m = (struct AddressDestroyedMessage*) &p[1];
+ m = (struct AddressDestroyedMessage *) &p[1];
m->header.type = htons (GNUNET_MESSAGE_TYPE_ATS_ADDRESS_DESTROYED);
m->header.size = htons (msize);
m->reserved = htonl (0);
- m->peer = *peer;
- m->address_length = htons (plugin_addr_len);
+ m->peer = address->peer;
+ m->address_length = htons (address->address_length);
m->plugin_name_length = htons (namelen);
- m->session_id = htonl (session_id = get_session_id (sh, session));
+ session_id = get_session_id (sh, session, &address->peer);
+ m->session_id = htonl (session_id);
pm = (char *) &m[1];
- memcpy (pm, plugin_addr, plugin_addr_len);
- memcpy (&pm[plugin_addr_len], plugin_name, namelen);
- GNUNET_CONTAINER_DLL_insert_tail (sh->pending_head,
- sh->pending_tail,
- p);
+ memcpy (pm, address->address, address->address_length);
+ memcpy (&pm[address->address_length], address->transport_name, namelen);
+ GNUNET_CONTAINER_DLL_insert_tail (sh->pending_head, sh->pending_tail, p);
do_transmit (sh);
- remove_session (sh, session_id);
+ remove_session (sh, session_id, &address->peer);
}
/* end of ats_api_scheduling.c */
projects / oweals / gnunet.git / blobdiff