/*
This file is part of GNUnet.
- Copyright (C) 2010-2015 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2010-2015 GNUnet e.V.
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
/**
#include "gnunet_peerinfo_service.h"
#include "gnunet_signatures.h"
+/**
+ * Current state of a validation process.
+ *
+ * FIXME: what state is used to indicate that a validation
+ * was successful? If that is clarified/determined, "UGH" in
+ * ~gnunetpeerinfogtk.c:1103 should be resolved.
+ */
+enum GNUNET_TRANSPORT_ValidationState
+{
+ /**
+ * Undefined state
+ *
+ * Used for final callback indicating operation done
+ */
+ GNUNET_TRANSPORT_VS_NONE,
+
+ /**
+ * Fresh validation entry
+ *
+ * Entry was just created, no validation process was executed
+ */
+ GNUNET_TRANSPORT_VS_NEW,
+
+ /**
+ * Updated validation entry
+ *
+ * This is an update for an existing validation entry
+ */
+ GNUNET_TRANSPORT_VS_UPDATE,
+
+ /**
+ * Timeout for validation entry
+ *
+ * A timeout occured during the validation process
+ */
+ GNUNET_TRANSPORT_VS_TIMEOUT,
+
+ /**
+ * Validation entry is removed
+ *
+ * The validation entry is getting removed due to a failed validation
+ */
+ GNUNET_TRANSPORT_VS_REMOVE
+};
+
+
+
/**
* How long is a PONG signature valid? We'll recycle a signature until
enum GNUNET_TRANSPORT_ValidationState state)
{
ve->state = state;
- GST_clients_broadcast_validation_notification (&ve->address->peer,
- ve->address,
- ve->send_time,
- ve->valid_until,
- ve->next_validation,
- state);
}
if (GNUNET_YES == ve->known_to_ats)
{
GST_ats_expire_address (ve->address);
+ GNUNET_assert (GNUNET_NO ==
+ GST_ats_is_known_no_session (ve->address));
ve->known_to_ats = GNUNET_NO;
}
GNUNET_HELLO_address_free (ve->address);
* longer valid and then possibly triggers its removal.
*
* @param cls the `struct ValidationEntry`
- * @param tc scheduler context (unused)
*/
static void
-timeout_hello_validation (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+timeout_hello_validation (void *cls)
{
struct ValidationEntry *ve = cls;
struct GNUNET_TIME_Absolute max;
until we give up on the PING */
max = GNUNET_TIME_absolute_max (ve->valid_until,
ve->revalidation_block);
- left = GNUNET_TIME_absolute_get_remaining (ve->max);
+ left = GNUNET_TIME_absolute_get_remaining (max);
if (left.rel_value_us > 0)
{
/* We should wait a bit longer. This happens when
*
* @param cls our `struct ValidationEntry`
* @param pid identity of the other peer
- * @param result #GNUNET_OK if the connection is allowed, #GNUNET_NO if not
+ * @param address_null address associated with the request, always NULL
+ * @param session_null session associated with the request, always NULL
+ * @param result #GNUNET_OK if the connection is allowed,
+ * #GNUNET_NO if not,
+ * #GNUNET_SYSERR if operation was aborted
*/
static void
transmit_ping_if_allowed (void *cls,
const struct GNUNET_PeerIdentity *pid,
+ const struct GNUNET_HELLO_Address *address_null,
+ struct GNUNET_ATS_Session *session_null,
int result)
{
struct ValidationEntry *ve = cls;
struct GNUNET_TRANSPORT_PluginFunctions *papi;
struct GNUNET_TIME_Absolute next;
const struct GNUNET_MessageHeader *hello;
- enum GNUNET_ATS_Network_Type network;
ssize_t ret;
size_t tsize;
size_t slen;
uint16_t hsize;
+ struct GNUNET_ATS_Session *session;
ve->bc = NULL;
- if (GNUNET_NO == result)
+ if (GNUNET_OK != result)
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Blacklist denies sending PING to `%s' `%s' `%s'\n",
return;
}
hello = GST_hello_get ();
- if (NULL == hello)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Not PINGing peer `%s' as our HELLO is not yet ready\n",
- GNUNET_i2s (pid));
- return;
- }
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Transmitting plain PING to `%s' `%s' `%s'\n",
- GNUNET_i2s (pid),
- GST_plugins_a2s (ve->address),
- ve->address->transport_name);
-
+ GNUNET_assert (NULL != hello);
slen = strlen (ve->address->transport_name) + 1;
hsize = ntohs (hello->size);
- tsize =
- sizeof (struct TransportPingMessage) + ve->address->address_length +
- slen + hsize;
+ tsize = sizeof (struct TransportPingMessage) +
+ ve->address->address_length + slen + hsize;
ping.header.size =
htons (sizeof (struct TransportPingMessage) +
slen + hsize;
}
{
- char message_buf[tsize];
+ char message_buf[tsize] GNUNET_ALIGN;
- /* build message with structure:
- * [HELLO][TransportPingMessage][Transport name][Address] */
- memcpy (message_buf, hello, hsize);
+ memcpy (message_buf,
+ hello,
+ hsize);
memcpy (&message_buf[hsize],
&ping,
sizeof (struct TransportPingMessage));
ve->address->address_length);
papi = GST_plugins_find (ve->address->transport_name);
GNUNET_assert (NULL != papi);
- GNUNET_assert (NULL != papi->send);
- struct Session *session = papi->get_session (papi->cls,
- ve->address);
-
- if (NULL != session)
- {
- ret = papi->send (papi->cls, session,
- message_buf, tsize,
- PING_PRIORITY,
- ACCEPTABLE_PING_DELAY,
- NULL, NULL);
- network = papi->get_network (papi->cls, session);
- if (GNUNET_ATS_NET_UNSPECIFIED == network)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Could not obtain a valid network for `%s' `%s'\n",
- GNUNET_i2s (pid),
- GST_plugins_a2s (ve->address));
- GNUNET_break(0);
- }
- GST_neighbours_notify_data_sent (ve->address, session, tsize);
- }
- else
+ session = papi->get_session (papi->cls,
+ ve->address);
+ if (NULL == session)
{
/* Could not get a valid session */
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Could not get a valid session for `%s' `%s'\n",
+ "Failed to get session to send PING to `%s' at `%s'\n",
GNUNET_i2s (pid),
GST_plugins_a2s (ve->address));
- ret = -1;
+ return;
}
- }
- if (-1 != ret)
- {
+
+ ret = papi->send (papi->cls, session,
+ message_buf, tsize,
+ PING_PRIORITY,
+ ACCEPTABLE_PING_DELAY,
+ NULL, NULL);
+ if (-1 == ret)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "Failed to send PING to `%s' at `%s'\n",
+ GNUNET_i2s (pid),
+ GST_plugins_a2s (ve->address));
+ return;
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Transmitted plain PING to `%s' `%s' `%s'\n",
+ GNUNET_i2s (pid),
+ GST_plugins_a2s (ve->address),
+ ve->address->transport_name);
+ ve->network = papi->get_network (papi->cls,
+ session);
+ GNUNET_break (GNUNET_ATS_NET_UNSPECIFIED != ve->network);
+ GST_neighbours_notify_data_sent (ve->address,
+ session,
+ tsize);
next = GNUNET_TIME_relative_to_absolute (validation_delay);
validation_next = GNUNET_TIME_absolute_max (next,
validation_next);
gettext_noop ("# PINGs for address validation sent"),
1,
GNUNET_NO);
- ve->network = network;
ve->expecting_pong = GNUNET_YES;
validations_running++;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
validations_running,
GNUNET_NO);
/* Notify about PING sent */
- validation_entry_changed (ve, GNUNET_TRANSPORT_VS_UPDATE);
+ validation_entry_changed (ve,
+ GNUNET_TRANSPORT_VS_UPDATE);
+
}
}
* Do address validation again to keep address valid.
*
* @param cls the `struct ValidationEntry`
- * @param tc scheduler context (unused)
*/
static void
-revalidate_address (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+revalidate_address (void *cls)
{
struct ValidationEntry *ve = cls;
struct GNUNET_TIME_Relative canonical_delay;
{
/* should wait a bit longer */
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Waiting for %s longer before validating address `%s'\n",
+ "Waiting for %s longer before (re)validating address `%s'\n",
GNUNET_STRINGS_relative_time_to_string (delay,
GNUNET_YES),
GST_plugins_a2s (ve->address));
delay = GNUNET_TIME_relative_add (canonical_delay,
GNUNET_TIME_relative_multiply
- (GNUNET_TIME_UNIT_MICROSECONDS, rdelay));
+ (GNUNET_TIME_UNIT_MICROSECONDS,
+ rdelay));
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Validating now, next scheduled for %s, now validating address `%s'\n",
GNUNET_YES),
GST_plugins_a2s (ve->address));
ve->revalidation_task =
- GNUNET_SCHEDULER_add_delayed (delay, &revalidate_address, ve);
+ GNUNET_SCHEDULER_add_delayed (delay,
+ &revalidate_address,
+ ve);
ve->next_validation = GNUNET_TIME_relative_to_absolute (delay);
/* start PINGing by checking blacklist */
GNUNET_NO);
bc = GST_blacklist_test_allowed (&ve->address->peer,
ve->address->transport_name,
- &transmit_ping_if_allowed, ve);
+ &transmit_ping_if_allowed,
+ ve,
+ NULL,
+ NULL);
if (NULL != bc)
ve->bc = bc; /* only set 'bc' if 'transmit_ping_if_allowed' was not already
* called... */
&validation_entry_match, &vemc);
if (NULL != (ve = vemc.ve))
return ve;
+ GNUNET_assert (GNUNET_NO ==
+ GST_ats_is_known_no_session (address));
ve = GNUNET_new (struct ValidationEntry);
ve->in_use = GNUNET_SYSERR; /* not defined */
ve->address = GNUNET_HELLO_address_copy (address);
ve->pong_sig_valid_until = GNUNET_TIME_UNIT_ZERO_ABS;
- memset (&ve->pong_sig_cache, '\0', sizeof (struct GNUNET_CRYPTO_EddsaSignature));
+ memset (&ve->pong_sig_cache,
+ '\0',
+ sizeof (struct GNUNET_CRYPTO_EddsaSignature));
ve->latency = GNUNET_TIME_UNIT_FOREVER_REL;
ve->challenge =
GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_NONCE, UINT32_MAX);
ve,
GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
publish_ve_stat_update ();
- validation_entry_changed (ve, GNUNET_TRANSPORT_VS_NEW);
+ validation_entry_changed (ve,
+ GNUNET_TRANSPORT_VS_NEW);
return ve;
}
struct ValidationEntry *ve;
struct GNUNET_PeerIdentity pid;
struct GNUNET_ATS_Properties prop;
+ struct GNUNET_TRANSPORT_PluginFunctions *papi;
if (0 == GNUNET_TIME_absolute_get_remaining (expiration).rel_value_us)
return GNUNET_OK; /* expired */
GNUNET_break (0);
return GNUNET_OK; /* invalid HELLO !? */
}
- if (NULL == GST_plugins_find (address->transport_name))
+ if (NULL == (papi = GST_plugins_find (address->transport_name)))
{
/* might have been valid in the past, but we don't have that
plugin loaded right now */
return GNUNET_OK;
}
+ if (NULL ==
+ papi->address_to_string (papi->cls,
+ address->address,
+ address->address_length))
+ {
+ /* Why do we try to add an ill-formed address? */
+ GNUNET_break (0);
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Address with %u bytes for plugin %s and peer %s is malformed\n",
+ (unsigned int) address->address_length,
+ address->transport_name,
+ GNUNET_i2s (&pid));
+ return GNUNET_OK;
+ }
ve = find_validation_entry (address);
+ ve->network = papi->get_network_for_address (papi->cls,
+ address);
+ GNUNET_break (GNUNET_ATS_NET_UNSPECIFIED != ve->network);
ve->valid_until = GNUNET_TIME_absolute_max (ve->valid_until,
expiration);
if (NULL == ve->revalidation_task)
ve->next_validation = GNUNET_TIME_absolute_get();
ve->revalidation_task = GNUNET_SCHEDULER_add_now (&revalidate_address, ve);
}
- validation_entry_changed (ve, GNUNET_TRANSPORT_VS_UPDATE);
+ validation_entry_changed (ve,
+ GNUNET_TRANSPORT_VS_UPDATE);
memset (&prop, 0, sizeof (prop));
prop.scope = ve->network;
prop.delay = GNUNET_TIME_relative_divide (ve->latency, 2);
{
ve->known_to_ats = GNUNET_YES;
GST_ats_add_address (address, &prop);
+ GNUNET_assert (GNUNET_YES ==
+ GST_ats_is_known_no_session (ve->address));
}
return GNUNET_OK;
}
{
struct TransportPongMessage *pong = cls;
struct GNUNET_TRANSPORT_PluginFunctions *papi;
- struct Session *session;
+ struct GNUNET_ATS_Session *session;
papi = GST_plugins_find (address->transport_name);
if (NULL == papi)
GST_validation_handle_ping (const struct GNUNET_PeerIdentity *sender,
const struct GNUNET_MessageHeader *hdr,
const struct GNUNET_HELLO_Address *sender_address,
- struct Session *session)
+ struct GNUNET_ATS_Session *session)
{
const struct TransportPingMessage *ping;
struct TransportPongMessage *pong;
ssize_t ret;
struct GNUNET_HELLO_Address address;
+ if (0 ==
+ memcmp (&GST_my_identity,
+ sender,
+ sizeof (struct GNUNET_PeerIdentity)))
+ return GNUNET_OK; /* our own, ignore! */
if (ntohs (hdr->size) < sizeof (struct TransportPingMessage))
{
GNUNET_break_op (0);
int sig_res;
int do_verify;
+ if (0 ==
+ memcmp (&GST_my_identity,
+ sender,
+ sizeof (struct GNUNET_PeerIdentity)))
+ return GNUNET_OK; /* our own, ignore! */
+
if (ntohs (hdr->size) < sizeof (struct TransportPongMessage))
{
GNUNET_break_op (0);
{
/* We have a cached and valid signature for this peer,
* try to compare instead of verify */
- if (0 == memcmp (&ve->pong_sig_cache, &pong->signature, sizeof (struct GNUNET_CRYPTO_EddsaSignature)))
+ if (0 == memcmp (&ve->pong_sig_cache,
+ &pong->signature,
+ sizeof (struct GNUNET_CRYPTO_EddsaSignature)))
{
/* signatures are identical, we can skip verification */
sig_res = GNUNET_OK;
{
/* Do expensive verification */
sig_res = GNUNET_CRYPTO_eddsa_verify (GNUNET_SIGNATURE_PURPOSE_TRANSPORT_PONG_OWN,
- &pong->purpose, &pong->signature,
+ &pong->purpose,
+ &pong->signature,
&ve->address->peer.public_key);
if (sig_res == GNUNET_SYSERR)
{
ve->expecting_pong = GNUNET_NO;
ve->valid_until = GNUNET_TIME_relative_to_absolute (HELLO_ADDRESS_EXPIRATION);
ve->pong_sig_cache = pong->signature;
- ve->pong_sig_valid_until = GNUNET_TIME_absolute_ntoh (pong->expiration);
+ ve->pong_sig_valid_until = GNUNET_TIME_absolute_ntoh (pong->expiration);
ve->latency = GNUNET_TIME_absolute_get_duration (ve->send_time);
{
if (GNUNET_YES == ve->known_to_ats)
{
+ GNUNET_assert (GNUNET_YES ==
+ GST_ats_is_known_no_session (ve->address));
GST_ats_update_delay (ve->address,
GNUNET_TIME_relative_divide (ve->latency, 2));
}
struct GNUNET_ATS_Properties prop;
memset (&prop, 0, sizeof (prop));
+ GNUNET_break (GNUNET_ATS_NET_UNSPECIFIED != ve->network);
prop.scope = ve->network;
prop.delay = GNUNET_TIME_relative_divide (ve->latency, 2);
+ GNUNET_assert (GNUNET_NO ==
+ GST_ats_is_known_no_session (ve->address));
ve->known_to_ats = GNUNET_YES;
GST_ats_add_address (ve->address, &prop);
+ GNUNET_assert (GNUNET_YES ==
+ GST_ats_is_known_no_session (ve->address));
}
}
if (validations_running > 0)
}
/* Notify about new validity */
- validation_entry_changed (ve, GNUNET_TRANSPORT_VS_UPDATE);
+ validation_entry_changed (ve,
+ GNUNET_TRANSPORT_VS_UPDATE);
/* build HELLO to store in PEERINFO */
ve->copied = GNUNET_NO;
hello = GNUNET_HELLO_create (&ve->address->peer.public_key,
- &add_valid_peer_address, ve,
+ &add_valid_peer_address,
+ ve,
GNUNET_NO);
- GNUNET_PEERINFO_add_peer (GST_peerinfo, hello, NULL, NULL);
+ GNUNET_PEERINFO_add_peer (GST_peerinfo,
+ hello,
+ NULL,
+ NULL);
GNUNET_free (hello);
return GNUNET_OK;
}
const struct GNUNET_HELLO_Message *hm =
(const struct GNUNET_HELLO_Message *) hello;
struct GNUNET_PeerIdentity pid;
- struct GNUNET_HELLO_Message *h;
int friend;
friend = GNUNET_HELLO_is_friend_only (hm);
/* got our own HELLO, how boring */
return GNUNET_OK;
}
- if (GNUNET_NO ==
- GNUNET_CONTAINER_multipeermap_contains (validation_map,
- &pid))
- {
- /* Add peer identity without addresses to peerinfo service */
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Adding HELLO without addresses for peer `%s'\n",
- GNUNET_i2s (&pid));
- h = GNUNET_HELLO_create (&pid.public_key, NULL, NULL, friend);
- GNUNET_PEERINFO_add_peer (GST_peerinfo, h, NULL, NULL);
-
- GNUNET_free (h);
- }
- else
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Validation received HELLO message for peer `%s' with size %u, checking for new addresses\n",
- GNUNET_i2s (&pid),
- ntohs (hello->size));
- }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Validation received HELLO message for peer `%s' with size %u, checking for new addresses\n",
+ GNUNET_i2s (&pid),
+ ntohs (hello->size));
GNUNET_assert (NULL ==
GNUNET_HELLO_iterate_addresses (hm,
GNUNET_NO,
}
-/**
- * Closure for the validation_entries_iterate function.
- */
-struct ValidationIteratorContext
-{
- /**
- * Function to call on each validation entry
- */
- GST_ValidationChangedCallback cb;
-
- /**
- * Closure for @e cb.
- */
- void *cb_cls;
-};
-
-
-/**
- * Function called on each entry in the validation map.
- * Passes the information from the validation entry to
- * the callback given in the closure.
- *
- * @param cls the `struct ValidationIteratorContext`
- * @param key peer this is about
- * @param value the `struct ValidationEntry`
- * @return #GNUNET_OK (continue to iterate)
- */
-static int
-validation_entries_iterate (void *cls,
- const struct GNUNET_PeerIdentity *key,
- void *value)
-{
- struct ValidationIteratorContext *ic = cls;
- struct ValidationEntry *ve = value;
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Notifying about validation entry for peer `%s' address `%s' \n",
- GNUNET_i2s (&ve->address->peer),
- GST_plugins_a2s (ve->address));
- ic->cb (ic->cb_cls,
- ve->address,
- ve->send_time,
- ve->valid_until,
- ve->next_validation,
- ve->state);
- return GNUNET_OK;
-}
-
-
-/**
- * Iterate over all iteration entries
- *
- * @param cb function to call
- * @param cb_cls closure for @a cb
- */
-void
-GST_validation_iterate (GST_ValidationChangedCallback cb,
- void *cb_cls)
-{
- struct ValidationIteratorContext ic;
-
- if (NULL == validation_map)
- return; /* can happen during shutdown */
- ic.cb = cb;
- ic.cb_cls = cb_cls;
- GNUNET_CONTAINER_multipeermap_iterate (validation_map,
- &validation_entries_iterate,
- &ic);
-}
-
/* end of file gnunet-service-transport_validation.c */