GNUnet  0.10.x
Data Structures | Macros | Enumerations | Functions | Variables
gnunet-service-transport.c File Reference

main for gnunet-service-transport More...

#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_hello_lib.h"
#include "gnunet_statistics_service.h"
#include "gnunet_transport_service.h"
#include "gnunet_peerinfo_service.h"
#include "gnunet_ats_service.h"
#include "gnunet-service-transport.h"
#include "gnunet-service-transport_ats.h"
#include "gnunet-service-transport_hello.h"
#include "gnunet-service-transport_neighbours.h"
#include "gnunet-service-transport_plugins.h"
#include "gnunet-service-transport_validation.h"
#include "gnunet-service-transport_manipulation.h"
#include "transport.h"
Include dependency graph for gnunet-service-transport.c:

Go to the source code of this file.

Data Structures

struct  GNUNET_ATS_SessionKiller
 Information we need for an asynchronous session kill. More...
 
struct  TransportClient
 Client connected to the transport service. More...
 
struct  GST_BlacklistCheck
 Context we use when performing a blacklist check. More...
 
struct  AddressToStringContext
 Context for address to string operations. More...
 
struct  SendTransmitContinuationContext
 Closure for handle_send_transmit_continuation() More...
 
struct  IterationContext
 Closure for call_iterator(). More...
 
struct  TestConnectionContext
 Closure for test_connection_ok(). More...
 

Macros

#define TRANSPORT_BLACKLIST_HT_SIZE   64
 Size of the blacklist hash map. More...
 
#define MAX_PENDING   (128 * 1024)
 How many messages can we have pending for a given client process before we start to drop incoming messages? We typically should have only one client and so this would be the primary buffer for messages, so the number should be chosen rather generously. More...
 

Enumerations

enum  ClientType {
  CT_NONE = 0, CT_TRANSPORT, CT_APPLICATION, CT_NONE = 0,
  CT_CORE = 1, CT_MONITOR = 2, CT_COMMUNICATOR = 3, CT_APPLICATION = 4,
  CT_NONE = 0, CT_CORE = 1, CT_MONITOR = 2, CT_BLACKLIST = 3,
  CT_CORE_NO_HANDLERS = 4
}
 What type of client is the struct TransportClient about? More...
 

Functions

static void unicast (struct TransportClient *tc, const struct GNUNET_MessageHeader *msg, int may_drop)
 Queue the given message for transmission to the given client. More...
 
static void * client_connect_cb (void *cls, struct GNUNET_SERVICE_Client *client, struct GNUNET_MQ_Handle *mq)
 Called whenever a client connects. More...
 
static void do_blacklist_check (void *cls)
 Perform next action in the blacklist check. More...
 
static int mark_match_down (void *cls, const struct GNUNET_PeerIdentity *peer, void *value)
 Mark the peer as down so we don't call the continuation context in the future. More...
 
static void client_disconnect_cb (void *cls, struct GNUNET_SERVICE_Client *client, void *app_ctx)
 Called whenever a client is disconnected. More...
 
static void notify_client_about_neighbour (void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, enum GNUNET_TRANSPORT_PeerState state, struct GNUNET_TIME_Absolute state_timeout, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
 Function called for each of our connected neighbours. More...
 
static void handle_client_start (void *cls, const struct StartMessage *start)
 Initialize a normal client. More...
 
static int check_client_hello (void *cls, const struct GNUNET_MessageHeader *message)
 Client sent us a HELLO. More...
 
static void handle_client_hello (void *cls, const struct GNUNET_MessageHeader *message)
 Client sent us a HELLO. More...
 
static void handle_send_transmit_continuation (void *cls, int success, size_t bytes_payload, size_t bytes_on_wire)
 Function called after the transmission is done. More...
 
static int check_client_send (void *cls, const struct OutboundMessage *obm)
 Client asked for transmission to a peer. More...
 
static void handle_client_send (void *cls, const struct OutboundMessage *obm)
 Client asked for transmission to a peer. More...
 
static void transmit_address_to_client (void *cls, const char *buf, int res)
 Take the given address and append it to the set of results sent back to the client. More...
 
static int check_client_address_to_string (void *cls, const struct AddressLookupMessage *alum)
 Client asked to resolve an address. More...
 
static void handle_client_address_to_string (void *cls, const struct AddressLookupMessage *alum)
 Client asked to resolve an address. More...
 
static struct PeerIterateResponseMessagecompose_address_iterate_response_message (const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address)
 Compose PeerIterateResponseMessage using the given peer and address. More...
 
static void send_peer_information (void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, enum GNUNET_TRANSPORT_PeerState state, struct GNUNET_TIME_Absolute state_timeout, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
 Output information of neighbours to the given client. More...
 
static void handle_client_monitor_peers (void *cls, const struct PeerMonitorMessage *msg)
 Client asked to obtain information about a specific or all peers Process the request. More...
 
static void plugin_session_info_cb (void *cls, struct GNUNET_ATS_Session *session, const struct GNUNET_TRANSPORT_SessionInfo *info)
 Function called by the plugin with information about the current sessions managed by the plugin (for monitoring). More...
 
static void handle_client_monitor_plugins (void *cls, const struct GNUNET_MessageHeader *message)
 Client asked to obtain information about all plugin connections. More...
 
void GST_clients_broadcast (const struct GNUNET_MessageHeader *msg, int may_drop)
 Broadcast the given message to all of our clients. More...
 
void GST_clients_broadcast_peer_notification (const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, enum GNUNET_TRANSPORT_PeerState state, struct GNUNET_TIME_Absolute state_timeout)
 Broadcast the new active address to all clients monitoring the peer. More...
 
static int mark_peer_down (void *cls, const struct GNUNET_PeerIdentity *peer, void *value)
 Mark the peer as down so we don't call the continuation context in the future. More...
 
void GST_clients_broadcast_disconnect (const struct GNUNET_PeerIdentity *peer)
 Notify all clients about a disconnect, and cancel pending SEND_OK messages for this peer. More...
 
static void transmit_our_hello (void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, enum GNUNET_TRANSPORT_PeerState state, struct GNUNET_TIME_Absolute state_timeout, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
 Transmit our HELLO message to the given (connected) neighbour. More...
 
static void process_hello_update (void *cls, const struct GNUNET_MessageHeader *hello)
 My HELLO has changed. More...
 
static struct GNUNET_TIME_Relative process_payload (const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, const struct GNUNET_MessageHeader *message)
 We received some payload. More...
 
static void kill_session_task (void *cls)
 Task to asynchronously terminate a session. More...
 
static void kill_session (const char *plugin_name, struct GNUNET_ATS_Session *session)
 Force plugin to terminate session due to communication issue. More...
 
static void connect_bl_check_cont (void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, int result)
 Black list check result for try_connect call If connection to the peer is allowed request adddress and ??? More...
 
struct GNUNET_TIME_Relative GST_receive_callback (void *cls, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, const struct GNUNET_MessageHeader *message)
 Function called by the transport for each received message. More...
 
static void plugin_env_address_change_notification (void *cls, int add_remove, const struct GNUNET_HELLO_Address *address)
 Function that will be called for each address the transport is aware that it might be reachable under. More...
 
static void plugin_env_session_end (void *cls, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session)
 Function that will be called whenever the plugin internally cleans up a session pointer and hence the service needs to discard all of those sessions as well. More...
 
static void plugin_env_session_start_bl_check_cont (void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, int result)
 Black list check result from blacklist check triggered when a plugin gave us a new session in plugin_env_session_start(). More...
 
static void plugin_env_session_start (void *cls, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, enum GNUNET_NetworkType scope)
 Plugin tells transport service about a new inbound session. More...
 
static void ats_request_address_change (void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in)
 Function called by ATS to notify the callee that the assigned bandwidth or address for a given peer was changed. More...
 
static void confirm_or_drop_neighbour (void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, int allowed)
 Got the result about an existing connection from a new blacklister. More...
 
static void test_connection_ok (void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, enum GNUNET_TRANSPORT_PeerState state, struct GNUNET_TIME_Absolute state_timeout, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
 Test if an existing connection is still acceptable given a new blacklisting client. More...
 
static void handle_client_blacklist_init (void *cls, const struct GNUNET_MessageHeader *message)
 Initialize a blacklisting client. More...
 
static int free_blacklist_entry (void *cls, const struct GNUNET_PeerIdentity *key, void *value)
 Free the given entry in the blacklist. More...
 
static void handle_client_set_metric (void *cls, const struct TrafficMetricMessage *tm)
 Set traffic metric to manipulate. More...
 
static void shutdown_task (void *cls)
 Function called when the service shuts down. More...
 
static void handle_client_blacklist_reply (void *cls, const struct BlacklistMessage *msg)
 A blacklisting client has sent us reply. More...
 
void GST_blacklist_add_peer (const struct GNUNET_PeerIdentity *peer, const char *transport_name)
 Add the given peer to the blacklist (for the given transport). More...
 
void GST_blacklist_abort_matching (const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session)
 Abort blacklist if address and session match. More...
 
static int test_blacklisted (void *cls, const struct GNUNET_PeerIdentity *key, void *value)
 Test if the given blacklist entry matches. More...
 
struct GST_BlacklistCheckGST_blacklist_test_allowed (const struct GNUNET_PeerIdentity *peer, const char *transport_name, GST_BlacklistTestContinuation cont, void *cont_cls, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session)
 Test if a peer/transport combination is blacklisted. More...
 
void GST_blacklist_test_cancel (struct GST_BlacklistCheck *bc)
 Cancel a blacklist check. More...
 
static void blacklist_cfg_iter (void *cls, const char *section, const char *option, const char *value)
 Function to iterate over options in the blacklisting section for a peer. More...
 
static void read_blacklist_configuration (const struct GNUNET_CONFIGURATION_Handle *cfg, const struct GNUNET_PeerIdentity *my_id)
 Read blacklist configuration. More...
 
static void run (void *cls, const struct GNUNET_CONFIGURATION_Handle *c, struct GNUNET_SERVICE_Handle *service)
 Initiate transport service. More...
 
 GNUNET_SERVICE_MAIN ("transport", GNUNET_SERVICE_OPTION_NONE, &run, &client_connect_cb, &client_disconnect_cb, NULL, GNUNET_MQ_hd_fixed_size(client_start, GNUNET_MESSAGE_TYPE_TRANSPORT_START, struct StartMessage, NULL), GNUNET_MQ_hd_var_size(client_hello, GNUNET_MESSAGE_TYPE_HELLO, struct GNUNET_MessageHeader, NULL), GNUNET_MQ_hd_var_size(client_send, GNUNET_MESSAGE_TYPE_TRANSPORT_SEND, struct OutboundMessage, NULL), GNUNET_MQ_hd_var_size(client_address_to_string, GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_TO_STRING, struct AddressLookupMessage, NULL), GNUNET_MQ_hd_fixed_size(client_monitor_peers, GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_REQUEST, struct PeerMonitorMessage, NULL), GNUNET_MQ_hd_fixed_size(client_blacklist_init, GNUNET_MESSAGE_TYPE_TRANSPORT_BLACKLIST_INIT, struct GNUNET_MessageHeader, NULL), GNUNET_MQ_hd_fixed_size(client_blacklist_reply, GNUNET_MESSAGE_TYPE_TRANSPORT_BLACKLIST_REPLY, struct BlacklistMessage, NULL), GNUNET_MQ_hd_fixed_size(client_set_metric, GNUNET_MESSAGE_TYPE_TRANSPORT_TRAFFIC_METRIC, struct TrafficMetricMessage, NULL), GNUNET_MQ_hd_fixed_size(client_monitor_plugins, GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PLUGIN_START, struct GNUNET_MessageHeader, NULL), GNUNET_MQ_handler_end())
 Define "main" method using service macro. More...
 

Variables

static struct TransportClientclients_head
 Head of linked list of all clients to this service. More...
 
static struct TransportClientclients_tail
 Tail of linked list of all clients to this service. More...
 
static struct GNUNET_CONTAINER_MultiPeerMapactive_stccs
 Map of peer identities to active send transmit continuation contexts. More...
 
static struct AddressToStringContexta2s_head
 Head of linked list of all pending address iterations. More...
 
static struct AddressToStringContexta2s_tail
 Tail of linked list of all pending address iterations. More...
 
static struct GST_BlacklistCheckbc_head
 Head of DLL of active blacklisting queries. More...
 
static struct GST_BlacklistCheckbc_tail
 Tail of DLL of active blacklisting queries. More...
 
static struct GNUNET_CONTAINER_MultiPeerMapblacklist
 Hashmap of blacklisted peers. More...
 
static struct GNUNET_NotificationContextplugin_nc
 Notification context, to send updates on changes to active plugin connections. More...
 
static struct TransportClientsync_client
 Plugin monitoring client we are currently syncing, NULL if all monitoring clients are in sync. More...
 
static struct GNUNET_PeerIdentity all_zeros
 Peer identity that is all zeros, used as a way to indicate "all peers". More...
 
struct GNUNET_STATISTICS_HandleGST_stats
 Statistics handle. More...
 
const struct GNUNET_CONFIGURATION_HandleGST_cfg
 Configuration handle. More...
 
struct GNUNET_PeerIdentity GST_my_identity
 Configuration handle. More...
 
struct GNUNET_PEERINFO_HandleGST_peerinfo
 Handle to peerinfo service. More...
 
struct GNUNET_CRYPTO_EddsaPrivateKeyGST_my_private_key
 Our private key. More...
 
struct GNUNET_ATS_SchedulingHandleGST_ats
 ATS scheduling handle. More...
 
struct GNUNET_ATS_ConnectivityHandleGST_ats_connect
 ATS connectivity handle. More...
 
struct GNUNET_TIME_Relative hello_expiration
 Hello address expiration. More...
 
static struct GNUNET_ATS_SessionKillersk_head
 Head of DLL of asynchronous tasks to kill sessions. More...
 
static struct GNUNET_ATS_SessionKillersk_tail
 Tail of DLL of asynchronous tasks to kill sessions. More...
 
struct GNUNET_NT_InterfaceScannerGST_is
 Interface scanner determines our LAN address range(s). More...
 

Detailed Description

main for gnunet-service-transport

Author
Christian Grothoff

Definition in file gnunet-service-transport.c.

Macro Definition Documentation

◆ TRANSPORT_BLACKLIST_HT_SIZE

#define TRANSPORT_BLACKLIST_HT_SIZE   64

Size of the blacklist hash map.

Definition at line 44 of file gnunet-service-transport.c.

Referenced by GST_blacklist_add_peer().

◆ MAX_PENDING

#define MAX_PENDING   (128 * 1024)

How many messages can we have pending for a given client process before we start to drop incoming messages? We typically should have only one client and so this would be the primary buffer for messages, so the number should be chosen rather generously.

The expectation here is that most of the time the queue is large enough so that a drop is virtually never required. Note that this value must be about as large as 'TOTAL_MSGS' in the 'test_transport_api_reliability.c', otherwise that testcase may fail.

Definition at line 58 of file gnunet-service-transport.c.

Referenced by unicast().

Enumeration Type Documentation

◆ ClientType

enum ClientType

What type of client is the struct TransportClient about?

Enumerator
CT_NONE 

We don't know yet.

CT_TRANSPORT 

Transport service.

CT_APPLICATION 

Application.

CT_NONE 

We do not know yet (client is fresh).

CT_CORE 

Is the CORE service, we need to forward traffic to it.

CT_MONITOR 

It is a monitor, forward monitor data.

CT_COMMUNICATOR 

It is a communicator, use for communication.

CT_APPLICATION 

"Application" telling us where to connect (i.e.

TOPOLOGY, DHT or CADET).

CT_NONE 

We do not know yet (client is fresh).

CT_CORE 

Is the CORE service, we need to forward traffic to it.

CT_MONITOR 

It is a monitor, forward monitor data.

CT_BLACKLIST 

It is a blacklist, query about allowed connections.

CT_CORE_NO_HANDLERS 

CORE client without any handlers.

Definition at line 95 of file gnunet-service-transport.c.

95  {
99  CT_NONE = 0,
100 
104  CT_CORE = 1,
105 
109  CT_MONITOR = 2,
110 
114  CT_BLACKLIST = 3,
115 
120 };
It is a monitor, forward monitor data.
We do not know yet (client is fresh).
It is a blacklist, query about allowed connections.
CORE client without any handlers.
Is the CORE service, we need to forward traffic to it.

Function Documentation

◆ unicast()

static void unicast ( struct TransportClient tc,
const struct GNUNET_MessageHeader msg,
int  may_drop 
)
static

Queue the given message for transmission to the given client.

Parameters
tctarget of the message
msgmessage to transmit
may_dropGNUNET_YES if the message can be dropped

Definition at line 419 of file gnunet-service-transport.c.

References env, gettext_noop, GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_MQ_get_length(), GNUNET_MQ_msg_copy(), GNUNET_MQ_send(), GNUNET_NO, GNUNET_STATISTICS_update(), GNUNET_YES, MAX_PENDING, TransportClient::mq, GNUNET_MessageHeader::size, and GNUNET_MessageHeader::type.

Referenced by GST_clients_broadcast(), handle_client_start(), handle_send_transmit_continuation(), and notify_client_about_neighbour().

422 {
423  struct GNUNET_MQ_Envelope *env;
424 
425  if ((GNUNET_MQ_get_length(tc->mq) >= MAX_PENDING) &&
426  (GNUNET_YES == may_drop))
427  {
428  GNUNET_log(
430  "Dropping message of type %u and size %u, have %u/%u messages pending\n",
431  ntohs(msg->type),
432  ntohs(msg->size),
434  MAX_PENDING);
436  gettext_noop(
437  "# messages dropped due to slow client"),
438  1,
439  GNUNET_NO);
440  return;
441  }
442  env = GNUNET_MQ_msg_copy(msg);
443  GNUNET_MQ_send(tc->mq, env);
444 }
struct GNUNET_MQ_Envelope * GNUNET_MQ_msg_copy(const struct GNUNET_MessageHeader *hdr)
Create a new envelope by copying an existing message.
Definition: mq.c:651
struct GNUNET_STATISTICS_Handle * GST_stats
Statistics handle.
#define GNUNET_NO
Definition: gnunet_common.h:78
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
#define MAX_PENDING
How many messages can we have pending for a given client process before we start to drop incoming mes...
uint16_t type
The type of the message (GNUNET_MESSAGE_TYPE_XXXX), in big-endian format.
unsigned int GNUNET_MQ_get_length(struct GNUNET_MQ_Handle *mq)
Obtain the current length of the message queue.
Definition: mq.c:333
struct GNUNET_MQ_Handle * mq
Message queue to the client.
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
#define GNUNET_log(kind,...)
#define GNUNET_YES
Definition: gnunet_common.h:77
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:351
#define gettext_noop(String)
Definition: gettext.h:69
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◆ client_connect_cb()

static void* client_connect_cb ( void *  cls,
struct GNUNET_SERVICE_Client client,
struct GNUNET_MQ_Handle mq 
)
static

Called whenever a client connects.

Allocates our data structures associated with that client.

Parameters
clsclosure, NULL
clientidentification of the client
mqmessage queue for the client
Returns
our struct TransportClient

Definition at line 457 of file gnunet-service-transport.c.

References TransportClient::client, do_blacklist_check(), GNUNET_CONTAINER_DLL_insert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_new, mq, TransportClient::mq, and tc.

Referenced by run().

460 {
461  struct TransportClient *tc;
462 
463  tc = GNUNET_new(struct TransportClient);
464  tc->client = client;
465  tc->mq = mq;
467  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Client %p connected\n", tc);
468  return tc;
469 }
#define GNUNET_CONTAINER_DLL_insert(head, tail, element)
Insert an element at the head of a DLL.
static struct GNUNET_SCHEDULER_TaskContext tc
Task context of the current task.
Definition: scheduler.c:410
#define GNUNET_new(type)
Allocate a struct or union of the given type.
static struct TransportClient * clients_tail
Tail of linked list of all clients to this service.
struct GNUNET_SERVICE_Client * client
Handle to the client.
static struct TransportClient * clients_head
Head of linked list of all clients to this service.
struct GNUNET_MQ_Handle * mq
Message queue to the client.
struct GNUNET_MQ_Handle * mq
Definition: 003.c:5
Client connected to the transport service.
#define GNUNET_log(kind,...)
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◆ do_blacklist_check()

static void do_blacklist_check ( void *  cls)
static

Perform next action in the blacklist check.

Parameters
clsthe struct BlacklistCheck*
clsthe struct GST_BlacklistCheck *

Definition at line 2187 of file gnunet-service-transport.c.

References GST_BlacklistCheck::address, GST_BlacklistCheck::bl_pos, TransportClient::blacklist, TransportClient::client, GST_BlacklistCheck::cont, GST_BlacklistCheck::cont_cls, CT_BLACKLIST, TransportClient::details, env, GNUNET_ERROR_TYPE_DEBUG, GNUNET_i2s(), GNUNET_log, GNUNET_MESSAGE_TYPE_TRANSPORT_BLACKLIST_QUERY, GNUNET_MQ_msg, GNUNET_MQ_send(), GNUNET_NO, GNUNET_OK, GNUNET_SERVICE_client_continue(), GNUNET_YES, GST_blacklist_test_cancel(), BlacklistMessage::is_allowed, TransportClient::mq, TransportClient::next, GST_BlacklistCheck::peer, BlacklistMessage::peer, GST_BlacklistCheck::session, GST_BlacklistCheck::task, tc, and TransportClient::type.

Referenced by client_connect_cb(), client_disconnect_cb(), GST_blacklist_test_allowed(), handle_client_blacklist_reply(), and test_connection_ok().

2188 {
2189  struct GST_BlacklistCheck *bc = cls;
2190  struct TransportClient *tc;
2191  struct GNUNET_MQ_Envelope *env;
2192  struct BlacklistMessage *bm;
2193 
2194  bc->task = NULL;
2195  while (NULL != (tc = bc->bl_pos))
2196  {
2197  if (CT_BLACKLIST == tc->type)
2198  break;
2199  bc->bl_pos = tc->next;
2200  }
2201  if (NULL == tc)
2202  {
2204  "No other blacklist clients active, will allow neighbour `%s'\n",
2205  GNUNET_i2s(&bc->peer));
2206 
2207  bc->cont(bc->cont_cls, &bc->peer, bc->address, bc->session, GNUNET_OK);
2209  return;
2210  }
2211  if ((NULL != tc->details.blacklist.bc) ||
2212  (GNUNET_NO != tc->details.blacklist.waiting_for_reply))
2213  return; /* someone else busy with this client */
2214  tc->details.blacklist.bc = bc;
2216  bm->is_allowed = htonl(0);
2217  bm->peer = bc->peer;
2218  GNUNET_MQ_send(tc->mq, env);
2219  if (GNUNET_YES == tc->details.blacklist.call_receive_done)
2220  {
2221  tc->details.blacklist.call_receive_done = GNUNET_NO;
2223  }
2224  tc->details.blacklist.waiting_for_reply = GNUNET_YES;
2225 }
struct GNUNET_HELLO_Address * address
Address for GST_blacklist_abort_matching(), can be NULL.
struct TransportClient::@81::@82 blacklist
Additional details if type is CT_BLACKLIST.
Context we use when performing a blacklist check.
struct GNUNET_PeerIdentity peer
Which peer is being blacklisted or queried?
Definition: transport.h:586
uint32_t is_allowed
0 for the query, GNUNET_OK (allowed) or GNUNET_SYSERR (disallowed) for the response.
Definition: transport.h:581
static struct GNUNET_SCHEDULER_TaskContext tc
Task context of the current task.
Definition: scheduler.c:410
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
#define GNUNET_NO
Definition: gnunet_common.h:78
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
struct GNUNET_SERVICE_Client * client
Handle to the client.
enum ClientType type
What type of client is this?
It is a blacklist, query about allowed connections.
struct GNUNET_ATS_Session * session
Session for GST_blacklist_abort_matching(), can be NULL.
Change in blacklisting (either request or notification, depending on which direction it is going)...
Definition: transport.h:570
struct GNUNET_MQ_Handle * mq
Message queue to the client.
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
void GST_blacklist_test_cancel(struct GST_BlacklistCheck *bc)
Cancel a blacklist check.
GST_BlacklistTestContinuation cont
Continuation to call with the result.
struct TransportClient * next
Kept in a DLL.
struct TransportClient * bl_pos
Our current position in the blacklisters list.
union TransportClient::@75 details
struct GNUNET_SCHEDULER_Task * task
Current task performing the check.
Client connected to the transport service.
#define GNUNET_log(kind,...)
#define GNUNET_MESSAGE_TYPE_TRANSPORT_BLACKLIST_QUERY
Query to a blacklisting client (is this peer blacklisted)?
#define GNUNET_YES
Definition: gnunet_common.h:77
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:351
struct GNUNET_PeerIdentity peer
Peer being checked.
void * cont_cls
Closure for cont.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2234
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◆ mark_match_down()

static int mark_match_down ( void *  cls,
const struct GNUNET_PeerIdentity peer,
void *  value 
)
static

Mark the peer as down so we don't call the continuation context in the future.

Parameters
clsa struct TransportClient
peera peer we are sending to
valuea struct SendTransmitContinuationContext to mark
Returns
GNUNET_OK (continue to iterate)

Definition at line 491 of file gnunet-service-transport.c.

References SendTransmitContinuationContext::down, GNUNET_OK, GNUNET_YES, SendTransmitContinuationContext::tc, tc, and value.

Referenced by client_disconnect_cb().

492 {
493  struct TransportClient *tc = cls;
494  struct SendTransmitContinuationContext *stcc = value;
495 
496  if (tc == stcc->tc)
497  {
498  stcc->down = GNUNET_YES;
499  stcc->tc = NULL;
500  }
501  return GNUNET_OK;
502 }
static struct GNUNET_SCHEDULER_TaskContext tc
Task context of the current task.
Definition: scheduler.c:410
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
struct TransportClient * tc
Client that made the request.
static char * value
Value of the record to add/remove.
int down
Set to GNUNET_YES if the connection for target goes down and we thus must no longer send the GNUNET_M...
Closure for handle_send_transmit_continuation()
Client connected to the transport service.
#define GNUNET_YES
Definition: gnunet_common.h:77
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◆ client_disconnect_cb()

static void client_disconnect_cb ( void *  cls,
struct GNUNET_SERVICE_Client client,
void *  app_ctx 
)
static

Called whenever a client is disconnected.

Frees our resources associated with that client.

Parameters
clsclosure, NULL
clientidentification of the client
app_ctxour struct TransportClient

Definition at line 514 of file gnunet-service-transport.c.

References GST_BlacklistCheck::bl_pos, CT_BLACKLIST, CT_CORE, CT_CORE_NO_HANDLERS, CT_MONITOR, CT_NONE, do_blacklist_check(), GNUNET_CONTAINER_DLL_remove, GNUNET_CONTAINER_multipeermap_iterate(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_log, GNUNET_SCHEDULER_add_now(), mark_match_down(), GST_BlacklistCheck::next, AddressToStringContext::next, TransportClient::next, GST_BlacklistCheck::task, tc, and TransportClient::type.

Referenced by run().

517 {
518  struct TransportClient *tc = app_ctx;
519  struct GST_BlacklistCheck *bc;
520 
522  "Client %p disconnected, cleaning up.\n",
523  tc);
525  for (struct AddressToStringContext *cur = a2s_head; NULL != cur;
526  cur = cur->next)
527  {
528  if (cur->tc == tc)
529  cur->tc = NULL;
530  }
532  switch (tc->type)
533  {
534  case CT_NONE:
535  break;
536 
537  case CT_CORE:
538  break;
539 
540  case CT_MONITOR:
541  break;
542 
543  case CT_BLACKLIST:
544  for (bc = bc_head; NULL != bc; bc = bc->next)
545  {
546  if (bc->bl_pos != tc)
547  continue;
548  bc->bl_pos = tc->next;
549  if (NULL == bc->task)
551  }
552  break;
553 
554  case CT_CORE_NO_HANDLERS:
555  break;
556  }
557  GNUNET_free(tc);
558 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
static struct GNUNET_CONTAINER_MultiPeerMap * active_stccs
Map of peer identities to active send transmit continuation contexts.
It is a monitor, forward monitor data.
Context we use when performing a blacklist check.
static struct GNUNET_SCHEDULER_TaskContext tc
Task context of the current task.
Definition: scheduler.c:410
static int mark_match_down(void *cls, const struct GNUNET_PeerIdentity *peer, void *value)
Mark the peer as down so we don't call the continuation context in the future.
We do not know yet (client is fresh).
static struct TransportClient * clients_tail
Tail of linked list of all clients to this service.
static void do_blacklist_check(void *cls)
Perform next action in the blacklist check.
static struct TransportClient * clients_head
Head of linked list of all clients to this service.
struct GST_BlacklistCheck * next
This is a linked list.
enum ClientType type
What type of client is this?
It is a blacklist, query about allowed connections.
static struct GST_BlacklistCheck * bc_head
Head of DLL of active blacklisting queries.
struct AddressToStringContext * next
This is a doubly-linked list.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_now(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run as soon as possible.
Definition: scheduler.c:1264
CORE client without any handlers.
struct TransportClient * next
Kept in a DLL.
int GNUNET_CONTAINER_multipeermap_iterate(struct GNUNET_CONTAINER_MultiPeerMap *map, GNUNET_CONTAINER_PeerMapIterator it, void *it_cls)
Iterate over all entries in the map.
static struct AddressToStringContext * a2s_head
Head of linked list of all pending address iterations.
struct TransportClient * bl_pos
Our current position in the blacklisters list.
struct GNUNET_SCHEDULER_Task * task
Current task performing the check.
Client connected to the transport service.
#define GNUNET_log(kind,...)
Is the CORE service, we need to forward traffic to it.
Context for address to string operations.
#define GNUNET_free(ptr)
Wrapper around free.
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◆ notify_client_about_neighbour()

static void notify_client_about_neighbour ( void *  cls,
const struct GNUNET_PeerIdentity peer,
const struct GNUNET_HELLO_Address address,
enum GNUNET_TRANSPORT_PeerState  state,
struct GNUNET_TIME_Absolute  state_timeout,
struct GNUNET_BANDWIDTH_Value32NBO  bandwidth_in,
struct GNUNET_BANDWIDTH_Value32NBO  bandwidth_out 
)
static

Function called for each of our connected neighbours.

Notify the client about the existing neighbour.

Parameters
clsthe struct TransportClient * to notify
peeridentity of the neighbour
addressthe address
statethe current state of the peer
state_timeoutthe time out for the state
bandwidth_ininbound bandwidth in NBO
bandwidth_outoutbound bandwidth in NBO

Definition at line 574 of file gnunet-service-transport.c.

References GNUNET_MESSAGE_TYPE_TRANSPORT_CONNECT, GNUNET_NO, GST_neighbours_test_connected(), ConnectInfoMessage::header, ConnectInfoMessage::id, peer, ConnectInfoMessage::quota_out, GNUNET_MessageHeader::size, tc, GNUNET_MessageHeader::type, and unicast().

Referenced by handle_client_start().

581 {
582  struct TransportClient *tc = cls;
583  struct ConnectInfoMessage cim;
584 
586  return;
587  cim.header.size = htons(sizeof(struct ConnectInfoMessage));
588  cim.header.type = htons(GNUNET_MESSAGE_TYPE_TRANSPORT_CONNECT);
589  cim.id = *peer;
590  cim.quota_out = bandwidth_out;
591  unicast(tc, &cim.header, GNUNET_NO);
592 }
struct GNUNET_MessageHeader header
Type will be GNUNET_MESSAGE_TYPE_TRANSPORT_CONNECT.
Definition: transport.h:120
int GST_neighbours_test_connected(const struct GNUNET_PeerIdentity *target)
Test if we're connected to the given peer.
static struct GNUNET_SCHEDULER_TaskContext tc
Task context of the current task.
Definition: scheduler.c:410
#define GNUNET_NO
Definition: gnunet_common.h:78
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
#define GNUNET_MESSAGE_TYPE_TRANSPORT_CONNECT
Message from TRANSPORT notifying about a client that connected to us.
Message from the transport service to the library informing about neighbors.
Definition: transport.h:116
struct GNUNET_TESTBED_Peer * peer
The peer associated with this model.
static void unicast(struct TransportClient *tc, const struct GNUNET_MessageHeader *msg, int may_drop)
Queue the given message for transmission to the given client.
Client connected to the transport service.
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◆ handle_client_start()

static void handle_client_start ( void *  cls,
const struct StartMessage start 
)
static

Initialize a normal client.

We got a start message from this client, add it to the list of clients for broadcasting of inbound messages.

Parameters
clsthe client
startthe start message that was sent

Definition at line 604 of file gnunet-service-transport.c.

References TransportClient::client, CT_CORE, CT_CORE_NO_HANDLERS, CT_NONE, GNUNET_break, GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_NO, GNUNET_SERVICE_client_continue(), GNUNET_SERVICE_client_drop(), GST_hello_get(), GST_my_identity, GST_neighbours_iterate(), notify_client_about_neighbour(), options, StartMessage::options, StartMessage::self, tc, TransportClient::type, and unicast().

605 {
606  struct TransportClient *tc = cls;
607  const struct GNUNET_MessageHeader *hello;
608  uint32_t options;
609 
610  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Client %p sent START\n", tc);
611  options = ntohl(start->options);
612  if ((0 != (1 & options)) &&
613  (0 != memcmp(&start->self,
615  sizeof(struct GNUNET_PeerIdentity))))
616  {
617  /* client thinks this is a different peer, reject */
618  GNUNET_break(0);
620  return;
621  }
622  if (CT_NONE != tc->type)
623  {
624  GNUNET_break(0);
626  return;
627  }
628  if (0 != (2 & options))
629  tc->type = CT_CORE;
630  else
632  hello = GST_hello_get();
633  if (NULL != hello)
634  unicast(tc, hello, GNUNET_NO);
637 }
void GST_neighbours_iterate(GST_NeighbourIterator cb, void *cb_cls)
Iterate over all connected neighbours.
struct GNUNET_GETOPT_CommandLineOption options[]
Definition: 002.c:5
struct GNUNET_PeerIdentity GST_my_identity
Configuration handle.
static struct GNUNET_SCHEDULER_TaskContext tc
Task context of the current task.
Definition: scheduler.c:410
static void notify_client_about_neighbour(void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, enum GNUNET_TRANSPORT_PeerState state, struct GNUNET_TIME_Absolute state_timeout, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
Function called for each of our connected neighbours.
We do not know yet (client is fresh).
#define GNUNET_NO
Definition: gnunet_common.h:78
struct GNUNET_PeerIdentity self
Identity we think we have.
Definition: transport.h:108
struct GNUNET_SERVICE_Client * client
Handle to the client.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
enum ClientType type
What type of client is this?
uint32_t options
0: no options 1: The self field should be checked 2: this client is interested in payload traffic ...
Definition: transport.h:102
void GNUNET_SERVICE_client_drop(struct GNUNET_SERVICE_Client *c)
Ask the server to disconnect from the given client.
Definition: service.c:2315
CORE client without any handlers.
static void unicast(struct TransportClient *tc, const struct GNUNET_MessageHeader *msg, int may_drop)
Queue the given message for transmission to the given client.
const struct GNUNET_MessageHeader * GST_hello_get()
Obtain this peers HELLO message.
The identity of the host (wraps the signing key of the peer).
Client connected to the transport service.
#define GNUNET_log(kind,...)
Header for all communications.
Is the CORE service, we need to forward traffic to it.
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2234
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◆ check_client_hello()

static int check_client_hello ( void *  cls,
const struct GNUNET_MessageHeader message 
)
static

Client sent us a HELLO.

Check the request.

Parameters
clsthe client
messagethe HELLO message

Definition at line 647 of file gnunet-service-transport.c.

References GNUNET_OK.

648 {
649  return GNUNET_OK; /* FIXME: check here? */
650 }
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75

◆ handle_client_hello()

static void handle_client_hello ( void *  cls,
const struct GNUNET_MessageHeader message 
)
static

Client sent us a HELLO.

Process the request.

Parameters
clsthe client
messagethe HELLO message

Definition at line 660 of file gnunet-service-transport.c.

References TransportClient::client, GNUNET_ERROR_TYPE_INFO, GNUNET_log, GNUNET_SERVICE_client_continue(), GST_validation_handle_hello(), and tc.

661 {
662  struct TransportClient *tc = cls;
663 
664  GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Received HELLO message\n");
667 }
static struct GNUNET_SCHEDULER_TaskContext tc
Task context of the current task.
Definition: scheduler.c:410
int GST_validation_handle_hello(const struct GNUNET_MessageHeader *hello)
We've received a HELLO, check which addresses are new and trigger validation.
struct GNUNET_SERVICE_Client * client
Handle to the client.
Client connected to the transport service.
#define GNUNET_log(kind,...)
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2234
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◆ handle_send_transmit_continuation()

static void handle_send_transmit_continuation ( void *  cls,
int  success,
size_t  bytes_payload,
size_t  bytes_on_wire 
)
static

Function called after the transmission is done.

Notify the client that it is OK to send the next message.

Parameters
clsclosure
successGNUNET_OK on success, GNUNET_NO on failure, GNUNET_SYSERR if we're not connected
bytes_payloadbytes payload sent
bytes_on_wirebytes sent on wire

Definition at line 680 of file gnunet-service-transport.c.

References SendOkMessage::bytes_msg, SendOkMessage::bytes_physical, SendTransmitContinuationContext::down, GNUNET_assert, GNUNET_CONSTANTS_LATENCY_WARN, GNUNET_CONTAINER_multipeermap_remove(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_WARNING, GNUNET_free, GNUNET_i2s(), GNUNET_log, GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_OK, GNUNET_NO, GNUNET_OK, GNUNET_STRINGS_relative_time_to_string(), GNUNET_TIME_absolute_get_duration(), GNUNET_YES, GST_neighbour_get_current_address(), SendOkMessage::header, SendOkMessage::peer, GNUNET_TIME_Relative::rel_value_us, SendTransmitContinuationContext::send_time, GNUNET_MessageHeader::size, SendOkMessage::success, SendTransmitContinuationContext::target, SendTransmitContinuationContext::tc, GNUNET_HELLO_Address::transport_name, GNUNET_MessageHeader::type, unicast(), and SendTransmitContinuationContext::uuid.

Referenced by handle_client_send().

684 {
685  struct SendTransmitContinuationContext *stcc = cls;
686  struct SendOkMessage send_ok_msg;
688  const struct GNUNET_HELLO_Address *addr;
689 
694  "It took us %s to send %u/%u bytes to %s (%d, %s)\n",
696  (unsigned int)bytes_payload,
697  (unsigned int)bytes_on_wire,
698  GNUNET_i2s(&stcc->target),
699  success,
700  (NULL != addr) ? addr->transport_name : "%");
701  else
703  "It took us %s to send %u/%u bytes to %s (%d, %s)\n",
705  (unsigned int)bytes_payload,
706  (unsigned int)bytes_on_wire,
707  GNUNET_i2s(&stcc->target),
708  success,
709  (NULL != addr) ? addr->transport_name : "%");
710 
711  if (GNUNET_NO == stcc->down)
712  {
713  /* Only send confirmation if we are still connected */
715  "Sending SEND_OK for transmission request %llu\n",
716  stcc->uuid);
717  send_ok_msg.header.size = htons(sizeof(send_ok_msg));
718  send_ok_msg.header.type = htons(GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_OK);
719  send_ok_msg.bytes_msg = htonl(bytes_payload);
720  send_ok_msg.bytes_physical = htonl(bytes_on_wire);
721  send_ok_msg.success = htonl(success);
722  send_ok_msg.peer = stcc->target;
723  unicast(stcc->tc, &send_ok_msg.header, GNUNET_NO);
724  }
726  GNUNET_OK ==
728  GNUNET_free(stcc);
729 }
static struct GNUNET_CONTAINER_MultiPeerMap * active_stccs
Map of peer identities to active send transmit continuation contexts.
uint64_t rel_value_us
The actual value.
struct GNUNET_TIME_Absolute send_time
At what time did we receive the message?
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
struct GNUNET_PeerIdentity target
Peer that was the target.
#define GNUNET_CONSTANTS_LATENCY_WARN
After what amount of latency for a message do we print a warning?
int GNUNET_CONTAINER_multipeermap_remove(struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key, const void *value)
Remove the given key-value pair from the map.
#define GNUNET_NO
Definition: gnunet_common.h:78
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
struct TransportClient * tc
Client that made the request.
const struct GNUNET_HELLO_Address * GST_neighbour_get_current_address(const struct GNUNET_PeerIdentity *peer)
Obtain current address information for the given neighbour.
const char * GNUNET_STRINGS_relative_time_to_string(struct GNUNET_TIME_Relative delta, int do_round)
Give relative time in human-readable fancy format.
Definition: strings.c:686
const char * transport_name
Name of the transport plugin enabling the communication using this address.
int down
Set to GNUNET_YES if the connection for target goes down and we thus must no longer send the GNUNET_M...
unsigned long long uuid
Unique ID, for logging.
static void unicast(struct TransportClient *tc, const struct GNUNET_MessageHeader *msg, int may_drop)
Queue the given message for transmission to the given client.
static struct GNUNET_TIME_Relative delay
When should dkg communication start?
#define GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_OK
Confirmation from TRANSPORT that message for transmission has been queued (and that the next message ...
Message used to notify the transport API that it can send another message to the transport service...
Definition: transport.h:211
struct GNUNET_TIME_Relative GNUNET_TIME_absolute_get_duration(struct GNUNET_TIME_Absolute whence)
Get the duration of an operation as the difference of the current time and the given start time "henc...
Definition: time.c:373
Closure for handle_send_transmit_continuation()
An address for communicating with a peer.
#define GNUNET_log(kind,...)
#define GNUNET_YES
Definition: gnunet_common.h:77
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
#define GNUNET_free(ptr)
Wrapper around free.
Time for relative time used by GNUnet, in microseconds.
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◆ check_client_send()

static int check_client_send ( void *  cls,
const struct OutboundMessage obm 
)
static

Client asked for transmission to a peer.

Process the request.

Parameters
clsthe client
obmthe send message that was sent

Definition at line 739 of file gnunet-service-transport.c.

References GNUNET_break, GNUNET_OK, GNUNET_SYSERR, OutboundMessage::header, size, and GNUNET_MessageHeader::size.

740 {
741  uint16_t size;
742  const struct GNUNET_MessageHeader *obmm;
743 
744  size = ntohs(obm->header.size) - sizeof(struct OutboundMessage);
745  if (size < sizeof(struct GNUNET_MessageHeader))
746  {
747  GNUNET_break(0);
748  return GNUNET_SYSERR;
749  }
750  obmm = (const struct GNUNET_MessageHeader *)&obm[1];
751  if (size != ntohs(obmm->size))
752  {
753  GNUNET_break(0);
754  return GNUNET_SYSERR;
755  }
756  return GNUNET_OK;
757 }
struct GNUNET_MessageHeader header
Type will be GNUNET_MESSAGE_TYPE_TRANSPORT_SEND.
Definition: transport.h:281
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
Message used to notify the transport service about a message to be transmitted to another peer...
Definition: transport.h:277
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
static unsigned int size
Size of the "table".
Definition: peer.c:66
Header for all communications.

◆ handle_client_send()

static void handle_client_send ( void *  cls,
const struct OutboundMessage obm 
)
static

Client asked for transmission to a peer.

Process the request.

Parameters
clsthe client
obmthe send message that was sent

Definition at line 767 of file gnunet-service-transport.c.

References TransportClient::client, gettext_noop, GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE, GNUNET_CONTAINER_multipeermap_put(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_i2s(), GNUNET_log, GNUNET_new, GNUNET_NO, GNUNET_SERVICE_client_continue(), GNUNET_STATISTICS_update(), GNUNET_TIME_absolute_get(), GNUNET_TIME_relative_ntoh(), GST_manipulation_send(), GST_neighbours_test_connected(), handle_send_transmit_continuation(), OutboundMessage::peer, SendTransmitContinuationContext::send_time, GNUNET_MessageHeader::size, SendTransmitContinuationContext::target, SendTransmitContinuationContext::tc, tc, OutboundMessage::timeout, GNUNET_MessageHeader::type, and SendTransmitContinuationContext::uuid.

768 {
769  static unsigned long long uuid_gen;
770  struct TransportClient *tc = cls;
771  const struct GNUNET_MessageHeader *obmm;
772  struct SendTransmitContinuationContext *stcc;
773 
774  obmm = (const struct GNUNET_MessageHeader *)&obm[1];
776  {
777  /* not connected, not allowed to send; can happen due to asynchronous operations */
779  "Could not send message to peer `%s': not connected\n",
780  GNUNET_i2s(&obm->peer));
782  GST_stats,
783  gettext_noop("# bytes payload dropped (other peer was not connected)"),
784  ntohs(obmm->size),
785  GNUNET_NO);
787  return;
788  }
789  GNUNET_log(
791  "Received SEND request %llu for `%s' and first message of type %u and total size %u\n",
792  uuid_gen,
793  GNUNET_i2s(&obm->peer),
794  ntohs(obmm->type),
795  ntohs(obmm->size));
797 
799  stcc->target = obm->peer;
800  stcc->tc = tc;
802  stcc->uuid = uuid_gen++;
804  active_stccs,
805  &stcc->target,
806  stcc,
809  obmm,
810  ntohs(obmm->size),
813  stcc);
814 }
static struct GNUNET_CONTAINER_MultiPeerMap * active_stccs
Map of peer identities to active send transmit continuation contexts.
struct GNUNET_TIME_Absolute send_time
At what time did we receive the message?
struct GNUNET_STATISTICS_Handle * GST_stats
Statistics handle.
int GST_neighbours_test_connected(const struct GNUNET_PeerIdentity *target)
Test if we&#39;re connected to the given peer.
struct GNUNET_PeerIdentity peer
Which peer should receive the message?
Definition: transport.h:300
struct GNUNET_PeerIdentity target
Peer that was the target.
static struct GNUNET_SCHEDULER_TaskContext tc
Task context of the current task.
Definition: scheduler.c:410
static void handle_send_transmit_continuation(void *cls, int success, size_t bytes_payload, size_t bytes_on_wire)
Function called after the transmission is done.
#define GNUNET_NO
Definition: gnunet_common.h:78
#define GNUNET_new(type)
Allocate a struct or union of the given type.
struct GNUNET_SERVICE_Client * client
Handle to the client.
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
struct TransportClient * tc
Client that made the request.
uint16_t type
The type of the message (GNUNET_MESSAGE_TYPE_XXXX), in big-endian format.
struct GNUNET_TIME_RelativeNBO timeout
Allowed delay.
Definition: transport.h:294
struct GNUNET_TIME_Relative GNUNET_TIME_relative_ntoh(struct GNUNET_TIME_RelativeNBO a)
Convert relative time from network byte order.
Definition: time.c:639
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_get(void)
Get the current time.
Definition: time.c:118
void GST_manipulation_send(const struct GNUNET_PeerIdentity *target, const void *msg, size_t msg_size, struct GNUNET_TIME_Relative timeout, GST_NeighbourSendContinuation cont, void *cont_cls)
Adapter function between transport&#39;s send function and transport plugins.
unsigned long long uuid
Unique ID, for logging.
Allow multiple values with the same key.
int GNUNET_CONTAINER_multipeermap_put(struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key, void *value, enum GNUNET_CONTAINER_MultiHashMapOption opt)
Store a key-value pair in the map.
Closure for handle_send_transmit_continuation()
Client connected to the transport service.
#define GNUNET_log(kind,...)
Header for all communications.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2234
#define gettext_noop(String)
Definition: gettext.h:69
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◆ transmit_address_to_client()

static void transmit_address_to_client ( void *  cls,
const char *  buf,
int  res 
)
static

Take the given address and append it to the set of results sent back to the client.

This function may be called serveral times for a single conversion. The last invocation will be with a address of NULL and a res of GNUNET_OK. Thus, to indicate conversion errors, the callback might be called first with address NULL and res being GNUNET_SYSERR. In that case, there will still be a subsequent call later with address NULL and res GNUNET_OK.

Parameters
clsthe struct AddressToStringContext
buftext to transmit (contains the human-readable address, or NULL)
resGNUNET_OK if conversion was successful, GNUNET_SYSERR on error, never GNUNET_NO

Definition at line 832 of file gnunet-service-transport.c.

References AddressToStringResultMessage::addr_len, env, GNUNET_assert, GNUNET_CONTAINER_DLL_remove, GNUNET_free, GNUNET_memcpy, GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_TO_STRING_REPLY, GNUNET_MQ_msg, GNUNET_MQ_msg_extra, GNUNET_MQ_send(), GNUNET_OK, GNUNET_SYSERR, GNUNET_YES, TransportClient::mq, AddressToStringResultMessage::res, and AddressToStringContext::tc.

Referenced by handle_client_address_to_string().

833 {
834  struct AddressToStringContext *actx = cls;
835  struct GNUNET_MQ_Envelope *env;
836  struct AddressToStringResultMessage *atsm;
837  size_t slen;
838 
840  if (NULL == actx->tc)
841  return;
842  if (NULL == buf)
843  {
844  env = GNUNET_MQ_msg(atsm,
846  if (GNUNET_OK == res)
847  {
848  /* this was the last call, transmit */
849  atsm->res = htonl(GNUNET_OK);
850  atsm->addr_len = htonl(0);
851  GNUNET_MQ_send(actx->tc->mq, env);
853  GNUNET_free(actx);
854  return;
855  }
856  if (GNUNET_SYSERR == res)
857  {
858  /* address conversion failed, but there will be more callbacks */
859  atsm->res = htonl(GNUNET_SYSERR);
860  atsm->addr_len = htonl(0);
861  GNUNET_MQ_send(actx->tc->mq, env);
862  return;
863  }
864  }
866  /* succesful conversion, append*/
867  slen = strlen(buf) + 1;
868  env =
869  GNUNET_MQ_msg_extra(atsm,
870  slen,
872  atsm->res = htonl(GNUNET_YES);
873  atsm->addr_len = htonl(slen);
874  GNUNET_memcpy(&atsm[1], buf, slen);
875  GNUNET_MQ_send(actx->tc->mq, env);
876 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
Message used to notify the transport API about an address to string conversion.
Definition: transport.h:315
uint32_t addr_len
Length of the following string, zero if is GNUNET_SYSERR.
Definition: transport.h:330
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
#define GNUNET_MQ_msg_extra(mvar, esize, type)
Allocate an envelope, with extra space allocated after the space needed by the message struct...
Definition: gnunet_mq_lib.h:52
uint32_t res
GNUNET_OK if the conversion succeeded, GNUNET_SYSERR if it failed
Definition: transport.h:325
struct TransportClient * tc
Client that made the request.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_TO_STRING_REPLY
Response to the address lookup request.
static char buf[2048]
static struct AddressToStringContext * a2s_tail
Tail of linked list of all pending address iterations.
static int res
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
struct GNUNET_MQ_Handle * mq
Message queue to the client.
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
static struct AddressToStringContext * a2s_head
Head of linked list of all pending address iterations.
#define GNUNET_YES
Definition: gnunet_common.h:77
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:351
Context for address to string operations.
#define GNUNET_free(ptr)
Wrapper around free.
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◆ check_client_address_to_string()

static int check_client_address_to_string ( void *  cls,
const struct AddressLookupMessage alum 
)
static

Client asked to resolve an address.

Check the request.

Parameters
clsthe client
alumthe resolution request
Returns
GNUNET_OK if alum is well-formed

Definition at line 887 of file gnunet-service-transport.c.

References address, AddressLookupMessage::addrlen, GNUNET_break, GNUNET_OK, GNUNET_SYSERR, AddressLookupMessage::header, plugin_name, size, and GNUNET_MessageHeader::size.

889 {
890  const char *plugin_name;
891  const char *address;
892  uint32_t address_len;
893  uint16_t size;
894 
895  size = ntohs(alum->header.size);
896  address_len = ntohs(alum->addrlen);
897  if (size <= sizeof(struct AddressLookupMessage) + address_len)
898  {
899  GNUNET_break(0);
900  return GNUNET_SYSERR;
901  }
902  address = (const char *)&alum[1];
903  plugin_name = (const char *)&address[address_len];
904  if ('\0' != plugin_name[size - sizeof(struct AddressLookupMessage) -
905  address_len - 1])
906  {
907  GNUNET_break(0);
908  return GNUNET_SYSERR;
909  }
910  return GNUNET_OK;
911 }
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
static char * plugin_name
Solver plugin name as string.
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
static unsigned int size
Size of the "table".
Definition: peer.c:66
Message from the library to the transport service asking for converting a transport address to a huma...
Definition: transport.h:339
struct GNUNET_MessageHeader header
Type will be GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_TO_STRING.
Definition: transport.h:343
uint16_t addrlen
Length of the (binary) address in bytes, in big-endian.
Definition: transport.h:354
static char * address
GNS address for this phone.

◆ handle_client_address_to_string()

static void handle_client_address_to_string ( void *  cls,
const struct AddressLookupMessage alum 
)
static

Client asked to resolve an address.

Process the request.

Parameters
clsthe client
alumthe resolution request

Definition at line 921 of file gnunet-service-transport.c.

References AddressToStringResultMessage::addr_len, address, GNUNET_TRANSPORT_PluginFunctions::address_pretty_printer, AddressLookupMessage::addrlen, TransportClient::client, GNUNET_TRANSPORT_PluginFunctions::cls, env, GNUNET_CONTAINER_DLL_insert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_WARNING, GNUNET_log, GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_TO_STRING_REPLY, GNUNET_MQ_msg, GNUNET_MQ_send(), GNUNET_new, GNUNET_OK, GNUNET_SERVICE_client_disable_continue_warning(), GNUNET_SYSERR, GNUNET_TIME_relative_ntoh(), GST_plugins_printer_find(), TransportClient::mq, numeric, AddressLookupMessage::numeric_only, plugin_name, AddressToStringResultMessage::res, AddressToStringContext::tc, tc, AddressLookupMessage::timeout, and transmit_address_to_client().

923 {
924  struct TransportClient *tc = cls;
926  const char *plugin_name;
927  const char *address;
928  uint32_t address_len;
929  struct AddressToStringContext *actx;
930  struct GNUNET_MQ_Envelope *env;
931  struct AddressToStringResultMessage *atsm;
932  struct GNUNET_TIME_Relative rtimeout;
933  int32_t numeric;
934 
935  address_len = ntohs(alum->addrlen);
936  address = (const char *)&alum[1];
937  plugin_name = (const char *)&address[address_len];
938  rtimeout = GNUNET_TIME_relative_ntoh(alum->timeout);
939  numeric = ntohs(alum->numeric_only);
940  papi = GST_plugins_printer_find(plugin_name);
941  if (NULL == papi)
942  {
944  "Failed to find plugin `%s'\n",
945  plugin_name);
946  env = GNUNET_MQ_msg(atsm,
948  atsm->res = htonl(GNUNET_SYSERR);
949  atsm->addr_len = htonl(0);
950  GNUNET_MQ_send(tc->mq, env);
951  env = GNUNET_MQ_msg(atsm,
953  atsm->res = htonl(GNUNET_OK);
954  atsm->addr_len = htonl(0);
955  GNUNET_MQ_send(tc->mq, env);
956  return;
957  }
958  actx = GNUNET_new(struct AddressToStringContext);
959  actx->tc = tc;
963  "Pretty-printing address of %u bytes using plugin `%s'\n",
964  address_len,
965  plugin_name);
966  papi->address_pretty_printer(papi->cls,
967  plugin_name,
968  address,
969  address_len,
970  numeric,
971  rtimeout,
973  actx);
974 }
Message used to notify the transport API about an address to string conversion.
Definition: transport.h:315
#define GNUNET_CONTAINER_DLL_insert(head, tail, element)
Insert an element at the head of a DLL.
uint32_t addr_len
Length of the following string, zero if is GNUNET_SYSERR.
Definition: transport.h:330
static struct GNUNET_SCHEDULER_TaskContext tc
Task context of the current task.
Definition: scheduler.c:410
static void transmit_address_to_client(void *cls, const char *buf, int res)
Take the given address and append it to the set of results sent back to the client.
Each plugin is required to return a pointer to a struct of this type as the return value from its ent...
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
static int numeric
Option -n.
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
#define GNUNET_new(type)
Allocate a struct or union of the given type.
struct GNUNET_TRANSPORT_PluginFunctions * GST_plugins_printer_find(const char *name)
Obtain the plugin API based on a the stripped plugin name after the underscore.
struct GNUNET_SERVICE_Client * client
Handle to the client.
uint32_t res
GNUNET_OK if the conversion succeeded, GNUNET_SYSERR if it failed
Definition: transport.h:325
struct TransportClient * tc
Client that made the request.
void * cls
Closure for all of the callbacks.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_TO_STRING_REPLY
Response to the address lookup request.
static char * plugin_name
Solver plugin name as string.
struct GNUNET_TIME_Relative GNUNET_TIME_relative_ntoh(struct GNUNET_TIME_RelativeNBO a)
Convert relative time from network byte order.
Definition: time.c:639
int16_t numeric_only
Should the conversion use numeric IP addresses (otherwise a reverse DNS lookup is OK – if applicable...
Definition: transport.h:349
static struct AddressToStringContext * a2s_tail
Tail of linked list of all pending address iterations.
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
struct GNUNET_MQ_Handle * mq
Message queue to the client.
struct GNUNET_TIME_RelativeNBO timeout
timeout to give up (for DNS resolution timeout mostly)
Definition: transport.h:359
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
static struct AddressToStringContext * a2s_head
Head of linked list of all pending address iterations.
Client connected to the transport service.
#define GNUNET_log(kind,...)
GNUNET_TRANSPORT_AddressPrettyPrinter address_pretty_printer
Function to pretty-print addresses.
uint16_t addrlen
Length of the (binary) address in bytes, in big-endian.
Definition: transport.h:354
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:351
void GNUNET_SERVICE_client_disable_continue_warning(struct GNUNET_SERVICE_Client *c)
Disable the warning the server issues if a message is not acknowledged in a timely fashion...
Definition: service.c:2258
Context for address to string operations.
static char * address
GNS address for this phone.
Time for relative time used by GNUnet, in microseconds.
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◆ compose_address_iterate_response_message()

static struct PeerIterateResponseMessage* compose_address_iterate_response_message ( const struct GNUNET_PeerIdentity peer,
const struct GNUNET_HELLO_Address address 
)
static

Compose PeerIterateResponseMessage using the given peer and address.

Parameters
peeridentity of the peer
addressthe address, NULL on disconnect
Returns
composed message

Definition at line 985 of file gnunet-service-transport.c.

References GNUNET_HELLO_Address::address, GNUNET_HELLO_Address::address_length, PeerIterateResponseMessage::addrlen, GNUNET_assert, GNUNET_malloc, GNUNET_memcpy, GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_RESPONSE, PeerIterateResponseMessage::header, PeerIterateResponseMessage::local_address_info, GNUNET_HELLO_Address::local_info, msg, peer, PeerIterateResponseMessage::peer, PeerIterateResponseMessage::pluginlen, PeerIterateResponseMessage::reserved, size, GNUNET_MessageHeader::size, GNUNET_HELLO_Address::transport_name, and GNUNET_MessageHeader::type.

Referenced by GST_clients_broadcast_peer_notification(), and send_peer_information().

988 {
990  size_t size;
991  size_t tlen;
992  size_t alen;
993  char *addr;
994 
995  GNUNET_assert(NULL != peer);
996  if (NULL != address)
997  {
998  tlen = strlen(address->transport_name) + 1;
999  alen = address->address_length;
1000  }
1001  else
1002  {
1003  tlen = 0;
1004  alen = 0;
1005  }
1006  size = (sizeof(struct PeerIterateResponseMessage) + alen + tlen);
1007  msg = GNUNET_malloc(size);
1008  msg->header.size = htons(size);
1009  msg->header.type =
1011  msg->reserved = htonl(0);
1012  msg->peer = *peer;
1013  msg->addrlen = htonl(alen);
1014  msg->pluginlen = htonl(tlen);
1015 
1016  if (NULL != address)
1017  {
1018  msg->local_address_info = htonl((uint32_t)address->local_info);
1019  addr = (char *)&msg[1];
1020  GNUNET_memcpy(addr, address->address, alen);
1021  GNUNET_memcpy(&addr[alen], address->transport_name, tlen);
1022  }
1023  return msg;
1024 }
size_t address_length
Number of bytes in address.
enum GNUNET_HELLO_AddressInfo local_info
Extended information about address.
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
const void * address
Binary representation of the address (plugin-specific).
uint32_t local_address_info
Local info about the address.
Definition: transport.h:547
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
Message from the transport service to the library containing information about a peer.
Definition: transport.h:523
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
uint32_t addrlen
Address length.
Definition: transport.h:557
uint16_t type
The type of the message (GNUNET_MESSAGE_TYPE_XXXX), in big-endian format.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_RESPONSE
Response to GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_REQUEST request to iterate over all known addr...
const char * transport_name
Name of the transport plugin enabling the communication using this address.
struct GNUNET_TESTBED_Peer * peer
The peer associated with this model.
static unsigned int size
Size of the "table".
Definition: peer.c:66
uint32_t reserved
For alignment.
Definition: transport.h:532
struct GNUNET_PeerIdentity peer
Peer identity.
Definition: transport.h:537
struct GNUNET_MessageHeader header
Type is GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_RESPONSE.
Definition: transport.h:527
uint32_t pluginlen
Length of the plugin name.
Definition: transport.h:562
#define GNUNET_malloc(size)
Wrapper around malloc.
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◆ send_peer_information()

static void send_peer_information ( void *  cls,
const struct GNUNET_PeerIdentity peer,
const struct GNUNET_HELLO_Address address,
enum GNUNET_TRANSPORT_PeerState  state,
struct GNUNET_TIME_Absolute  state_timeout,
struct GNUNET_BANDWIDTH_Value32NBO  bandwidth_in,
struct GNUNET_BANDWIDTH_Value32NBO  bandwidth_out 
)
static

Output information of neighbours to the given client.

Parameters
clsthe struct PeerIterationContext *
peeridentity of the neighbour
addressthe address
statecurrent state this peer is in
state_timeouttimeout for the current state of the peer
bandwidth_ininbound quota in NBO
bandwidth_outoutbound quota in NBO

Definition at line 1061 of file gnunet-service-transport.c.

References IterationContext::all, compose_address_iterate_response_message(), env, GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_i2s(), GNUNET_log, GNUNET_MQ_msg_copy(), GNUNET_MQ_send(), GNUNET_TIME_absolute_hton(), GNUNET_TRANSPORT_ps2s(), GNUNET_YES, GST_plugins_a2s(), PeerIterateResponseMessage::header, IterationContext::id, TransportClient::mq, msg, pc, PeerIterateResponseMessage::state, PeerIterateResponseMessage::state_timeout, and IterationContext::tc.

Referenced by handle_client_monitor_peers().

1068 {
1069  struct IterationContext *pc = cls;
1070  struct GNUNET_MQ_Envelope *env;
1072 
1073  if ((GNUNET_YES != pc->all) && (0 != memcmp(peer, &pc->id, sizeof(pc->id))))
1074  return;
1076  "Sending information about `%s' using address `%s' in state `%s'\n",
1077  GNUNET_i2s(peer),
1078  (NULL != address) ? GST_plugins_a2s(address) : "<none>",
1080  msg = compose_address_iterate_response_message(peer, address);
1081  msg->state = htonl(state);
1082  msg->state_timeout = GNUNET_TIME_absolute_hton(state_timeout);
1083  env = GNUNET_MQ_msg_copy(&msg->header);
1084  GNUNET_free(msg);
1085  GNUNET_MQ_send(pc->tc->mq, env);
1086 }
Closure for call_iterator().
struct GNUNET_MQ_Envelope * GNUNET_MQ_msg_copy(const struct GNUNET_MessageHeader *hdr)
Create a new envelope by copying an existing message.
Definition: mq.c:651
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
struct GNUNET_TIME_AbsoluteNBO state_timeout
Timeout for the state this peer is in.
Definition: transport.h:542
Message from the transport service to the library containing information about a peer.
Definition: transport.h:523
struct GNUNET_PeerIdentity id
Which peers do we care about?
uint32_t state
State this peer is in as an enum GNUNET_TRANSPORT_PeerState
Definition: transport.h:552
enum State state
current state of profiling
static struct PeerIterateResponseMessage * compose_address_iterate_response_message(const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address)
Compose PeerIterateResponseMessage using the given peer and address.
const char * GST_plugins_a2s(const struct GNUNET_HELLO_Address *address)
Convert a given address to a human-readable format.
int all
GNUNET_YES if id should be ignored because we want all peers.
const char * GNUNET_TRANSPORT_ps2s(enum GNUNET_TRANSPORT_PeerState state)
Convert a transport state to a human readable string.
struct GNUNET_MQ_Handle * mq
Message queue to the client.
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
static struct GNUNET_FS_PublishContext * pc
Handle to FS-publishing operation.
#define GNUNET_log(kind,...)
struct GNUNET_MessageHeader header
Type is GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_RESPONSE.
Definition: transport.h:527
#define GNUNET_YES
Definition: gnunet_common.h:77
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:351
struct TransportClient * tc
Context to use for the transmission.
struct GNUNET_TIME_AbsoluteNBO GNUNET_TIME_absolute_hton(struct GNUNET_TIME_Absolute a)
Convert absolute time to network byte order.
Definition: time.c:655
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
#define GNUNET_free(ptr)
Wrapper around free.
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◆ handle_client_monitor_peers()

static void handle_client_monitor_peers ( void *  cls,
const struct PeerMonitorMessage msg 
)
static

Client asked to obtain information about a specific or all peers Process the request.

Parameters
clsthe client
msgthe peer address information request

Definition at line 1097 of file gnunet-service-transport.c.

References IterationContext::all, all_zeros, TransportClient::client, CT_MONITOR, CT_NONE, TransportClient::details, env, GNUNET_break, GNUNET_ERROR_TYPE_DEBUG, GNUNET_i2s(), GNUNET_log, GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_RESPONSE_END, GNUNET_MQ_msg, GNUNET_MQ_send(), GNUNET_NO, GNUNET_SERVICE_client_disable_continue_warning(), GNUNET_SERVICE_client_drop(), GNUNET_SERVICE_client_mark_monitor(), GNUNET_YES, GST_neighbours_iterate(), IterationContext::id, TransportClient::monitor_peer, TransportClient::mq, msg, PeerMonitorMessage::one_shot, PeerMonitorMessage::peer, send_peer_information(), tc, IterationContext::tc, and TransportClient::type.

1098 {
1099  struct TransportClient *tc = cls;
1100  struct IterationContext pc;
1101 
1102  if (CT_NONE != tc->type)
1103  {
1104  GNUNET_break(0);
1106  return;
1107  }
1110 
1111  /* Send initial list */
1112  pc.tc = tc;
1113  if (0 == memcmp(&msg->peer, &all_zeros, sizeof(struct GNUNET_PeerIdentity)))
1114  {
1115  /* iterate over all neighbours */
1116  pc.all = GNUNET_YES;
1117  pc.id = msg->peer;
1118  }
1119  else
1120  {
1121  /* just return one neighbour */
1122  pc.all = GNUNET_NO;
1123  pc.id = msg->peer;
1124  }
1126 
1127  if (GNUNET_YES != ntohl(msg->one_shot))
1128  {
1129  tc->details.monitor_peer = msg->peer;
1130  tc->type = CT_MONITOR;
1131  if (0 !=
1132  memcmp(&msg->peer, &all_zeros, sizeof(struct GNUNET_PeerIdentity)))
1134  "Client %p started monitoring of the peer `%s'\n",
1135  tc,
1136  GNUNET_i2s(&msg->peer));
1137  else
1139  "Client %p started monitoring all peers\n",
1140  tc);
1141  }
1142  else
1143  {
1144  struct GNUNET_MessageHeader *msg;
1145  struct GNUNET_MQ_Envelope *env;
1146 
1147  env =
1148  GNUNET_MQ_msg(msg,
1150  GNUNET_MQ_send(tc->mq, env);
1151  }
1152 }
Closure for call_iterator().
void GST_neighbours_iterate(GST_NeighbourIterator cb, void *cb_cls)
Iterate over all connected neighbours.
struct GNUNET_PeerIdentity monitor_peer
Peer identity to monitor the addresses of.
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
It is a monitor, forward monitor data.
static void send_peer_information(void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, enum GNUNET_TRANSPORT_PeerState state, struct GNUNET_TIME_Absolute state_timeout, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
Output information of neighbours to the given client.
static struct GNUNET_SCHEDULER_TaskContext tc
Task context of the current task.
Definition: scheduler.c:410
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
We do not know yet (client is fresh).
#define GNUNET_NO
Definition: gnunet_common.h:78
struct GNUNET_SERVICE_Client * client
Handle to the client.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
enum ClientType type
What type of client is this?
#define GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_RESPONSE_END
Response to GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_RESPONSE_END terminating list of replies...
struct GNUNET_PeerIdentity peer
The identity of the peer to look up.
Definition: transport.h:472
void GNUNET_SERVICE_client_mark_monitor(struct GNUNET_SERVICE_Client *c)
Set the &#39;monitor&#39; flag on this client.
Definition: service.c:2394
void GNUNET_SERVICE_client_drop(struct GNUNET_SERVICE_Client *c)
Ask the server to disconnect from the given client.
Definition: service.c:2315
struct GNUNET_MQ_Handle * mq
Message queue to the client.
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
static struct GNUNET_PeerIdentity all_zeros
Peer identity that is all zeros, used as a way to indicate "all peers".
The identity of the host (wraps the signing key of the peer).
static struct GNUNET_FS_PublishContext * pc
Handle to FS-publishing operation.
union TransportClient::@75 details
uint32_t one_shot
One shot call or continous replies?
Definition: transport.h:467
Client connected to the transport service.
#define GNUNET_log(kind,...)
Header for all communications.
#define GNUNET_YES
Definition: gnunet_common.h:77
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:351
void GNUNET_SERVICE_client_disable_continue_warning(struct GNUNET_SERVICE_Client *c)
Disable the warning the server issues if a message is not acknowledged in a timely fashion...
Definition: service.c:2258
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
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◆ plugin_session_info_cb()

static void plugin_session_info_cb ( void *  cls,
struct GNUNET_ATS_Session session,
const struct GNUNET_TRANSPORT_SessionInfo info 
)
static

Function called by the plugin with information about the current sessions managed by the plugin (for monitoring).

Parameters
clsclosure
sessionsession handle this information is about, NULL to indicate that we are "in sync" (initial iteration complete)
infoinformation about the state of the session, NULL if session is also NULL and we are merely signalling that the initial iteration is over

Definition at line 1168 of file gnunet-service-transport.c.

References GNUNET_HELLO_Address::address, GNUNET_TRANSPORT_SessionInfo::address, GNUNET_HELLO_Address::address_length, TransportPluginMonitorMessage::bytes_pending, TransportPluginMonitorMessage::delay, env, GNUNET_assert, GNUNET_break, GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_i2s(), GNUNET_log, GNUNET_malloc, GNUNET_memcpy, GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PLUGIN_EVENT, GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PLUGIN_SYNC, GNUNET_MQ_msg, GNUNET_MQ_msg_copy(), GNUNET_MQ_send(), GNUNET_NO, GNUNET_notification_context_broadcast(), GNUNET_notification_context_get_size(), GNUNET_TIME_absolute_hton(), GST_plugins_monitor_subscribe(), TransportPluginMonitorMessage::header, GNUNET_TRANSPORT_SessionInfo::is_inbound, TransportPluginMonitorMessage::is_inbound, TransportClient::mq, msg, TransportPluginMonitorMessage::msgs_pending, name, GNUNET_TRANSPORT_SessionInfo::num_bytes_pending, GNUNET_TRANSPORT_SessionInfo::num_msg_pending, GNUNET_HELLO_Address::peer, TransportPluginMonitorMessage::peer, TransportPluginMonitorMessage::plugin_address_len, TransportPluginMonitorMessage::plugin_name_len, GNUNET_TRANSPORT_SessionInfo::receive_delay, GNUNET_ATS_SessionKiller::session, TransportPluginMonitorMessage::session_id, TransportPluginMonitorMessage::session_state, GNUNET_TRANSPORT_SessionInfo::session_timeout, size, GNUNET_MessageHeader::size, GNUNET_TRANSPORT_SessionInfo::state, TransportPluginMonitorMessage::timeout, GNUNET_HELLO_Address::transport_name, and GNUNET_MessageHeader::type.

Referenced by handle_client_monitor_plugins().

1171 {
1172  struct GNUNET_MQ_Envelope *env;
1174  struct GNUNET_MessageHeader *sync;
1175  size_t size;
1176  size_t slen;
1177  uint16_t alen;
1178  char *name;
1179  char *addr;
1180 
1182  {
1183  GST_plugins_monitor_subscribe(NULL, NULL);
1184  return;
1185  }
1186  if ((NULL == info) && (NULL == session))
1187  {
1188  /* end of initial iteration */
1189  if (NULL != sync_client)
1190  {
1191  env =
1193  GNUNET_MQ_send(sync_client->mq, env);
1194  sync_client = NULL;
1195  }
1196  return;
1197  }
1198  GNUNET_assert(NULL != info);
1200  "Plugin event for peer %s on transport %s\n",
1201  GNUNET_i2s(&info->address->peer),
1202  info->address->transport_name);
1203  slen = strlen(info->address->transport_name) + 1;
1204  alen = info->address->address_length;
1205  size = sizeof(struct TransportPluginMonitorMessage) + slen + alen;
1206  if (size > UINT16_MAX)
1207  {
1208  GNUNET_break(0);
1209  return;
1210  }
1211  msg = GNUNET_malloc(size);
1212  msg->header.size = htons(size);
1214  msg->session_state = htons((uint16_t)info->state);
1215  msg->is_inbound = htons((int16_t)info->is_inbound);
1216  msg->msgs_pending = htonl(info->num_msg_pending);
1217  msg->bytes_pending = htonl(info->num_bytes_pending);
1220  msg->peer = info->address->peer;
1221  msg->session_id = (uint64_t)(intptr_t)session;
1222  msg->plugin_name_len = htons(slen);
1223  msg->plugin_address_len = htons(alen);
1224  name = (char *)&msg[1];
1225  GNUNET_memcpy(name, info->address->transport_name, slen);
1226  addr = &name[slen];
1227  GNUNET_memcpy(addr, info->address->address, alen);
1228  if (NULL != sync_client)
1229  {
1230  struct GNUNET_MQ_Envelope *env;
1231 
1232  env = GNUNET_MQ_msg_copy(&msg->header);
1233  GNUNET_MQ_send(sync_client->mq, env);
1234  }
1235  else
1236  {
1238  }
1239  GNUNET_free(msg);
1240 }
size_t address_length
Number of bytes in address.
uint32_t num_bytes_pending
Number of bytes pending transmission for this session.
struct GNUNET_MQ_Envelope * GNUNET_MQ_msg_copy(const struct GNUNET_MessageHeader *hdr)
Create a new envelope by copying an existing message.
Definition: mq.c:651
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
const void * address
Binary representation of the address (plugin-specific).
#define GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PLUGIN_EVENT
Monitoring event about the connection state of plugins, generated in response to a subscription initi...
void GST_plugins_monitor_subscribe(GNUNET_TRANSPORT_SessionInfoCallback cb, void *cb_cls)
Register callback with all plugins to monitor their status.
int16_t is_inbound
GNUNET_YES if this is an inbound connection, GNUNET_NO if this is an outbound connection, GNUNET_SYSERR if connections of this plugin are so fundamentally bidirectional that they have no &#39;initiator&#39; Value given in NBO.
Definition: transport.h:612
int is_inbound
GNUNET_YES if this is an inbound connection, GNUNET_NO if this is an outbound connection, GNUNET_SYSERR if connections of this plugin are so fundamentally bidirectional that they have no &#39;initiator&#39;
struct GNUNET_PeerIdentity peer
Which peer is this connection for?
Definition: transport.h:637
enum GNUNET_TRANSPORT_SessionState state
New state of the session.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
#define GNUNET_NO
Definition: gnunet_common.h:78
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
const struct GNUNET_HELLO_Address * address
Address used by the session.
uint32_t num_msg_pending
Number of messages pending transmission for this session.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
static struct TransportClient * sync_client
Plugin monitoring client we are currently syncing, NULL if all monitoring clients are in sync...
struct GNUNET_TIME_Absolute receive_delay
Until when does this plugin refuse to receive to manage staying within the inbound quota...
uint16_t type
The type of the message (GNUNET_MESSAGE_TYPE_XXXX), in big-endian format.
unsigned int GNUNET_notification_context_get_size(struct GNUNET_NotificationContext *nc)
Return active number of subscribers in this context.
Definition: nc.c:213
uint16_t plugin_name_len
Length of the plugin name in bytes, including 0-termination.
Definition: transport.h:647
uint16_t plugin_address_len
Length of the plugin address in bytes.
Definition: transport.h:652
const char * transport_name
Name of the transport plugin enabling the communication using this address.
uint32_t msgs_pending
Number of messages waiting transmission.
Definition: transport.h:617
struct GNUNET_TIME_Absolute session_timeout
At what time will this session timeout (unless activity happens)?
struct GNUNET_TIME_AbsoluteNBO timeout
When will this transport plugin session time out?
Definition: transport.h:627
#define GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PLUGIN_SYNC
Monitoring event notifying client that the initial iteration is now completed and we are in sync with...
static unsigned int size
Size of the "table".
Definition: peer.c:66
struct GNUNET_MQ_Handle * mq
Message queue to the client.
Transport-level connection status update.
Definition: transport.h:593
const char * name
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
uint32_t bytes_pending
Number of bytes waiting for transmission.
Definition: transport.h:622
struct GNUNET_PeerIdentity peer
For which peer is this an address?
uint64_t session_id
Unique identifier for the session.
Definition: transport.h:642
void GNUNET_notification_context_broadcast(struct GNUNET_NotificationContext *nc, const struct GNUNET_MessageHeader *msg, int can_drop)
Send a message to all subscribers of this context.
Definition: nc.c:187
uint16_t session_state
An enum GNUNET_TRANSPORT_SessionState in NBO.
Definition: transport.h:602
struct GNUNET_TIME_AbsoluteNBO delay
Until how long is this plugin currently blocked from reading?
Definition: transport.h:632
#define GNUNET_log(kind,...)
static struct GNUNET_NotificationContext * plugin_nc
Notification context, to send updates on changes to active plugin connections.
Header for all communications.
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:351
struct GNUNET_TIME_AbsoluteNBO GNUNET_TIME_absolute_hton(struct GNUNET_TIME_Absolute a)
Convert absolute time to network byte order.
Definition: time.c:655
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
#define GNUNET_malloc(size)
Wrapper around malloc.
#define GNUNET_free(ptr)
Wrapper around free.
struct GNUNET_MessageHeader header
Type will be GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PLUGIN_EVENT.
Definition: transport.h:597
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◆ handle_client_monitor_plugins()

static void handle_client_monitor_plugins ( void *  cls,
const struct GNUNET_MessageHeader message 
)
static

Client asked to obtain information about all plugin connections.

Parameters
clsthe client
messagethe peer address information request

Definition at line 1250 of file gnunet-service-transport.c.

References TransportClient::client, GNUNET_assert, GNUNET_notification_context_add(), GNUNET_SERVICE_client_disable_continue_warning(), GNUNET_SERVICE_client_mark_monitor(), GST_plugins_monitor_subscribe(), TransportClient::mq, plugin_session_info_cb(), and tc.

1252 {
1253  struct TransportClient *tc = cls;
1254 
1258  GNUNET_assert(NULL == sync_client);
1259  sync_client = tc;
1261 }
static void plugin_session_info_cb(void *cls, struct GNUNET_ATS_Session *session, const struct GNUNET_TRANSPORT_SessionInfo *info)
Function called by the plugin with information about the current sessions managed by the plugin (for ...
void GST_plugins_monitor_subscribe(GNUNET_TRANSPORT_SessionInfoCallback cb, void *cb_cls)
Register callback with all plugins to monitor their status.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
static struct GNUNET_SCHEDULER_TaskContext tc
Task context of the current task.
Definition: scheduler.c:410
struct GNUNET_SERVICE_Client * client
Handle to the client.
void GNUNET_notification_context_add(struct GNUNET_NotificationContext *nc, struct GNUNET_MQ_Handle *mq)
Add a subscriber to the notification context.
Definition: nc.c:158
static struct TransportClient * sync_client
Plugin monitoring client we are currently syncing, NULL if all monitoring clients are in sync...
void GNUNET_SERVICE_client_mark_monitor(struct GNUNET_SERVICE_Client *c)
Set the &#39;monitor&#39; flag on this client.
Definition: service.c:2394
struct GNUNET_MQ_Handle * mq
Message queue to the client.
Client connected to the transport service.
static struct GNUNET_NotificationContext * plugin_nc
Notification context, to send updates on changes to active plugin connections.
void GNUNET_SERVICE_client_disable_continue_warning(struct GNUNET_SERVICE_Client *c)
Disable the warning the server issues if a message is not acknowledged in a timely fashion...
Definition: service.c:2258
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◆ GST_clients_broadcast()

void GST_clients_broadcast ( const struct GNUNET_MessageHeader msg,
int  may_drop 
)

Broadcast the given message to all of our clients.

Parameters
msgmessage to broadcast
may_dropGNUNET_YES if the message can be dropped / is payload

Definition at line 1271 of file gnunet-service-transport.c.

References CT_CORE, CT_NONE, done(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_NO, GNUNET_YES, GNUNET_MessageHeader::size, tc, GNUNET_MessageHeader::type, and unicast().

Referenced by GST_clients_broadcast_disconnect(), neighbours_connect_notification(), process_hello_update(), process_payload(), and send_outbound_quota_to_clients().

1272 {
1273  int done;
1274 
1276  "Asked to broadcast message of type %u with %u bytes\n",
1277  (unsigned int)ntohs(msg->type),
1278  (unsigned int)ntohs(msg->size));
1279  done = GNUNET_NO;
1280  for (struct TransportClient *tc = clients_head; NULL != tc; tc = tc->next)
1281  {
1282  if (CT_NONE == tc->type)
1283  continue; /* client not yet ready */
1284  if ((GNUNET_YES == may_drop) && (CT_CORE != tc->type))
1285  continue; /* skip, this client does not care about payload */
1286  unicast(tc, msg, may_drop);
1287  done = GNUNET_YES;
1288  }
1289  if (GNUNET_NO == done)
1291  "Message of type %u not delivered, is CORE service up?\n",
1292  ntohs(msg->type));
1293 }
static void done()
static struct GNUNET_SCHEDULER_TaskContext tc
Task context of the current task.
Definition: scheduler.c:410
We do not know yet (client is fresh).
#define GNUNET_NO
Definition: gnunet_common.h:78
static struct TransportClient * clients_head
Head of linked list of all clients to this service.
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
uint16_t type
The type of the message (GNUNET_MESSAGE_TYPE_XXXX), in big-endian format.
static void unicast(struct TransportClient *tc, const struct GNUNET_MessageHeader *msg, int may_drop)
Queue the given message for transmission to the given client.
Client connected to the transport service.
#define GNUNET_log(kind,...)
#define GNUNET_YES
Definition: gnunet_common.h:77
Is the CORE service, we need to forward traffic to it.
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◆ GST_clients_broadcast_peer_notification()

void GST_clients_broadcast_peer_notification ( const struct GNUNET_PeerIdentity peer,
const struct GNUNET_HELLO_Address address,
enum GNUNET_TRANSPORT_PeerState  state,
struct GNUNET_TIME_Absolute  state_timeout 
)

Broadcast the new active address to all clients monitoring the peer.

Parameters
peerpeer this update is about (never NULL)
addressaddress, NULL on disconnect
statethe current state of the peer
state_timeoutthe time out for the state

Definition at line 1305 of file gnunet-service-transport.c.

References all_zeros, compose_address_iterate_response_message(), CT_MONITOR, env, GNUNET_free, GNUNET_MQ_msg_copy(), GNUNET_MQ_send(), GNUNET_TIME_absolute_hton(), PeerIterateResponseMessage::header, msg, PeerIterateResponseMessage::state, PeerIterateResponseMessage::state_timeout, and tc.

Referenced by neighbours_changed_notification().

1310 {
1311  struct GNUNET_MQ_Envelope *env;
1313 
1314  msg = compose_address_iterate_response_message(peer, address);
1315  msg->state = htonl(state);
1316  msg->state_timeout = GNUNET_TIME_absolute_hton(state_timeout);
1317  for (struct TransportClient *tc = clients_head; NULL != tc; tc = tc->next)
1318  {
1319  if (CT_MONITOR != tc->type)
1320  continue;
1321  if ((0 == memcmp(&tc->details.monitor_peer,
1322  &all_zeros,
1323  sizeof(struct GNUNET_PeerIdentity))) ||
1324  (0 == memcmp(&tc->details.monitor_peer,
1325  peer,
1326  sizeof(struct GNUNET_PeerIdentity))))
1327  {
1328  env = GNUNET_MQ_msg_copy(&msg->header);
1329  GNUNET_MQ_send(tc->mq, env);
1330  }
1331  }
1332  GNUNET_free(msg);
1333 }
struct GNUNET_MQ_Envelope * GNUNET_MQ_msg_copy(const struct GNUNET_MessageHeader *hdr)
Create a new envelope by copying an existing message.
Definition: mq.c:651
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
It is a monitor, forward monitor data.
static struct GNUNET_SCHEDULER_TaskContext tc
Task context of the current task.
Definition: scheduler.c:410
struct GNUNET_TIME_AbsoluteNBO state_timeout
Timeout for the state this peer is in.
Definition: transport.h:542
Message from the transport service to the library containing information about a peer.
Definition: transport.h:523
static struct TransportClient * clients_head
Head of linked list of all clients to this service.
uint32_t state
State this peer is in as an enum GNUNET_TRANSPORT_PeerState
Definition: transport.h:552
enum State state
current state of profiling
static struct PeerIterateResponseMessage * compose_address_iterate_response_message(const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address)
Compose PeerIterateResponseMessage using the given peer and address.
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
static struct GNUNET_PeerIdentity all_zeros
Peer identity that is all zeros, used as a way to indicate "all peers".
The identity of the host (wraps the signing key of the peer).
Client connected to the transport service.
struct GNUNET_MessageHeader header
Type is GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_RESPONSE.
Definition: transport.h:527
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:351
struct GNUNET_TIME_AbsoluteNBO GNUNET_TIME_absolute_hton(struct GNUNET_TIME_Absolute a)
Convert absolute time to network byte order.
Definition: time.c:655
#define GNUNET_free(ptr)
Wrapper around free.
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◆ mark_peer_down()

static int mark_peer_down ( void *  cls,
const struct GNUNET_PeerIdentity peer,
void *  value 
)
static

Mark the peer as down so we don't call the continuation context in the future.

Parameters
clsNULL
peerpeer that got disconnected
valuea struct SendTransmitContinuationContext to mark
Returns
GNUNET_OK (continue to iterate)

Definition at line 1346 of file gnunet-service-transport.c.

References SendTransmitContinuationContext::down, GNUNET_OK, GNUNET_YES, and value.

Referenced by GST_clients_broadcast_disconnect().

1347 {
1348  struct SendTransmitContinuationContext *stcc = value;
1349 
1350  stcc->down = GNUNET_YES;
1351  return GNUNET_OK;
1352 }
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
static char * value
Value of the record to add/remove.
int down
Set to GNUNET_YES if the connection for target goes down and we thus must no longer send the GNUNET_M...
Closure for handle_send_transmit_continuation()
#define GNUNET_YES
Definition: gnunet_common.h:77
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◆ GST_clients_broadcast_disconnect()

void GST_clients_broadcast_disconnect ( const struct GNUNET_PeerIdentity peer)

Notify all clients about a disconnect, and cancel pending SEND_OK messages for this peer.

Parameters
peerpeer that disconnected

Definition at line 1362 of file gnunet-service-transport.c.

References GNUNET_CONTAINER_multipeermap_get_multiple(), GNUNET_MESSAGE_TYPE_TRANSPORT_DISCONNECT, GNUNET_NO, GST_clients_broadcast(), DisconnectInfoMessage::header, mark_peer_down(), peer, DisconnectInfoMessage::peer, DisconnectInfoMessage::reserved, GNUNET_MessageHeader::size, and GNUNET_MessageHeader::type.

Referenced by neighbours_disconnect_notification().

1363 {
1364  struct DisconnectInfoMessage disconnect_msg;
1365 
1367  peer,
1368  &mark_peer_down,
1369  NULL);
1370  disconnect_msg.header.size = htons(sizeof(struct DisconnectInfoMessage));
1371  disconnect_msg.header.type = htons(GNUNET_MESSAGE_TYPE_TRANSPORT_DISCONNECT);
1372  disconnect_msg.reserved = htonl(0);
1373  disconnect_msg.peer = *peer;
1374  GST_clients_broadcast(&disconnect_msg.header, GNUNET_NO);
1375 }
static struct GNUNET_CONTAINER_MultiPeerMap * active_stccs
Map of peer identities to active send transmit continuation contexts.
void GST_clients_broadcast(const struct GNUNET_MessageHeader *msg, int may_drop)
Broadcast the given message to all of our clients.
#define GNUNET_NO
Definition: gnunet_common.h:78
static int mark_peer_down(void *cls, const struct GNUNET_PeerIdentity *peer, void *value)
Mark the peer as down so we don&#39;t call the continuation context in the future.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_DISCONNECT
Message from TRANSPORT notifying about a client that disconnected from us.
struct GNUNET_TESTBED_Peer * peer
The peer associated with this model.
Message from the transport service to the library informing about disconnects.
Definition: transport.h:147
int GNUNET_CONTAINER_multipeermap_get_multiple(struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key, GNUNET_CONTAINER_PeerMapIterator it, void *it_cls)
Iterate over all entries in the map that match a particular key.
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◆ transmit_our_hello()

static void transmit_our_hello ( void *  cls,
const struct GNUNET_PeerIdentity peer,
const struct GNUNET_HELLO_Address address,
enum GNUNET_TRANSPORT_PeerState  state,
struct GNUNET_TIME_Absolute  state_timeout,
struct GNUNET_BANDWIDTH_Value32NBO  bandwidth_in,
struct GNUNET_BANDWIDTH_Value32NBO  bandwidth_out 
)
static

Transmit our HELLO message to the given (connected) neighbour.

Parameters
clsthe 'HELLO' message
peeridentity of the peer
addressthe address
statecurrent state this peer is in
state_timeouttimeout for the current state of the peer
bandwidth_ininbound quota in NBO
bandwidth_outoutbound quota in NBO

Definition at line 1390 of file gnunet-service-transport.c.

References GNUNET_NO, GST_my_identity, GST_neighbours_send(), GST_neighbours_test_connected(), hello_expiration, and GNUNET_MessageHeader::size.

Referenced by process_hello_update().

1397 {
1398  const struct GNUNET_MessageHeader *hello = cls;
1399 
1400  if (0 == memcmp(peer, &GST_my_identity, sizeof(struct GNUNET_PeerIdentity)))
1401  return; /* not to ourselves */
1403  return;
1404 
1405  GST_neighbours_send(peer,
1406  hello,
1407  ntohs(hello->size),
1409  NULL,
1410  NULL);
1411 }
struct GNUNET_PeerIdentity GST_my_identity
Configuration handle.
int GST_neighbours_test_connected(const struct GNUNET_PeerIdentity *target)
Test if we&#39;re connected to the given peer.
#define GNUNET_NO
Definition: gnunet_common.h:78
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
struct GNUNET_TIME_Relative hello_expiration
Hello address expiration.
The identity of the host (wraps the signing key of the peer).
void GST_neighbours_send(const struct GNUNET_PeerIdentity *target, const void *msg, size_t msg_size, struct GNUNET_TIME_Relative timeout, GST_NeighbourSendContinuation cont, void *cont_cls)
Transmit a message to the given target using the active connection.
Header for all communications.
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◆ process_hello_update()

static void process_hello_update ( void *  cls,
const struct GNUNET_MessageHeader hello 
)
static

My HELLO has changed.

Tell everyone who should know.

Parameters
clsunused
hellonew HELLO

Definition at line 1421 of file gnunet-service-transport.c.

References GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_NO, GST_clients_broadcast(), GST_neighbours_iterate(), and transmit_our_hello().

Referenced by run().

1422 {
1423  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Broadcasting HELLO to clients\n");
1425  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Broadcasting HELLO to neighbours\n");
1426  GST_neighbours_iterate(&transmit_our_hello, (void *)hello);
1427 }
void GST_neighbours_iterate(GST_NeighbourIterator cb, void *cb_cls)
Iterate over all connected neighbours.
void GST_clients_broadcast(const struct GNUNET_MessageHeader *msg, int may_drop)
Broadcast the given message to all of our clients.
#define GNUNET_NO
Definition: gnunet_common.h:78
#define GNUNET_log(kind,...)
static void transmit_our_hello(void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, enum GNUNET_TRANSPORT_PeerState state, struct GNUNET_TIME_Absolute state_timeout, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
Transmit our HELLO message to the given (connected) neighbour.
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◆ process_payload()

static struct GNUNET_TIME_Relative process_payload ( const struct GNUNET_HELLO_Address address,
struct GNUNET_ATS_Session session,
const struct GNUNET_MessageHeader message 
)
static

We received some payload.

Prepare to pass it on to our clients.

Parameters
addressaddress and (claimed) identity of the other peer
sessionidentifier used for this session (NULL for plugins that do not offer bi-directional communication to the sender using the same "connection")
messagethe message to process
Returns
how long the plugin should wait until receiving more data

Definition at line 1441 of file gnunet-service-transport.c.

References buf, gettext_noop, GNUNET_ALIGN, GNUNET_ERROR_TYPE_DEBUG, GNUNET_i2s(), GNUNET_log, GNUNET_memcpy, GNUNET_MESSAGE_TYPE_TRANSPORT_RECV, GNUNET_NO, GNUNET_STATISTICS_update(), GNUNET_SYSERR, GNUNET_YES, GST_clients_broadcast(), GST_neighbours_calculate_receive_delay(), GST_neighbours_test_connected(), InboundMessage::header, InboundMessage::peer, ret, size, GNUNET_MessageHeader::size, and GNUNET_MessageHeader::type.

Referenced by GST_receive_callback().

1444 {
1445  struct GNUNET_TIME_Relative ret;
1446  int do_forward;
1447  struct InboundMessage *im;
1448  size_t msg_size = ntohs(message->size);
1449  size_t size = sizeof(struct InboundMessage) + msg_size;
1450  char buf[size] GNUNET_ALIGN;
1451 
1452  do_forward = GNUNET_SYSERR;
1454  msg_size,
1455  &do_forward);
1456  if (!GST_neighbours_test_connected(&address->peer))
1457  {
1459  "Discarded %u bytes type %u payload from peer `%s'\n",
1460  (unsigned int)msg_size,
1461  ntohs(message->type),
1462  GNUNET_i2s(&address->peer));
1464  GST_stats,
1465  gettext_noop("# bytes payload discarded due to not connected peer"),
1466  msg_size,
1467  GNUNET_NO);
1468  return ret;
1469  }
1470 
1471  if (GNUNET_YES != do_forward)
1472  return ret;
1473  im = (struct InboundMessage *)buf;
1474  im->header.size = htons(size);
1476  im->peer = address->peer;
1477  GNUNET_memcpy(&im[1], message, ntohs(message->size));
1479  return ret;
1480 }
void GST_clients_broadcast(const struct GNUNET_MessageHeader *msg, int may_drop)
Broadcast the given message to all of our clients.
struct GNUNET_STATISTICS_Handle * GST_stats
Statistics handle.
int GST_neighbours_test_connected(const struct GNUNET_PeerIdentity *target)
Test if we&#39;re connected to the given peer.
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
#define GNUNET_NO
Definition: gnunet_common.h:78
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
static int ret
Final status code.
Definition: gnunet-arm.c:89
struct GNUNET_TIME_Relative GST_neighbours_calculate_receive_delay(const struct GNUNET_PeerIdentity *sender, ssize_t size, int *do_forward)
We have received a message from the given sender.
uint16_t type
The type of the message (GNUNET_MESSAGE_TYPE_XXXX), in big-endian format.
static char buf[2048]
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
static unsigned int size
Size of the "table".
Definition: peer.c:66
struct GNUNET_PeerIdentity peer
Which peer sent the message?
Definition: transport.h:203
struct GNUNET_PeerIdentity peer
For which peer is this an address?
#define GNUNET_ALIGN
gcc-ism to force alignment; we use this to align char-arrays that may then be cast to &#39;struct&#39;s...
#define GNUNET_MESSAGE_TYPE_TRANSPORT_RECV
Message from TRANSPORT notifying about a message that was received.
#define GNUNET_log(kind,...)
#define GNUNET_YES
Definition: gnunet_common.h:77
struct GNUNET_MessageHeader header
Type will be GNUNET_MESSAGE_TYPE_TRANSPORT_RECV.
Definition: transport.h:198
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
Message used to notify the transport API about a message received from the network.
Definition: transport.h:194
Time for relative time used by GNUnet, in microseconds.
#define gettext_noop(String)
Definition: gettext.h:69
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◆ kill_session_task()

static void kill_session_task ( void *  cls)
static

Task to asynchronously terminate a session.

Parameters
clsthe struct GNUNET_ATS_SessionKiller with the information for the kill

Definition at line 1489 of file gnunet-service-transport.c.

References GNUNET_TRANSPORT_PluginFunctions::cls, GNUNET_TRANSPORT_PluginFunctions::disconnect_session, GNUNET_CONTAINER_DLL_remove, GNUNET_free, GNUNET_ATS_SessionKiller::plugin, GNUNET_ATS_SessionKiller::session, and GNUNET_ATS_SessionKiller::task.

Referenced by kill_session().

1490 {
1491  struct GNUNET_ATS_SessionKiller *sk = cls;
1492 
1493  sk->task = NULL;
1495  sk->plugin->disconnect_session(sk->plugin->cls, sk->session);
1496  GNUNET_free(sk);
1497 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
static struct GNUNET_ATS_SessionKiller * sk_head
Head of DLL of asynchronous tasks to kill sessions.
struct GNUNET_TRANSPORT_PluginFunctions * plugin
Plugin for the session.
GNUNET_TRANSPORT_DisconnectSessionFunction disconnect_session
Function that can be used to force the plugin to disconnect from the given peer and cancel all previo...
void * cls
Closure for all of the callbacks.
struct GNUNET_ATS_Session * session
Session to kill.
static struct GNUNET_ATS_SessionKiller * sk_tail
Tail of DLL of asynchronous tasks to kill sessions.
Information we need for an asynchronous session kill.
struct GNUNET_SCHEDULER_Task * task
The kill task.
#define GNUNET_free(ptr)
Wrapper around free.
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◆ kill_session()

static void kill_session ( const char *  plugin_name,
struct GNUNET_ATS_Session session 
)
static

Force plugin to terminate session due to communication issue.

Parameters
plugin_namename of the plugin
sessionsession to termiante

Definition at line 1508 of file gnunet-service-transport.c.

References GNUNET_break, GNUNET_CONTAINER_DLL_insert, GNUNET_new, GNUNET_SCHEDULER_add_now(), GST_plugins_find(), kill_session_task(), GNUNET_ATS_SessionKiller::next, GNUNET_ATS_SessionKiller::plugin, GNUNET_ATS_SessionKiller::session, and GNUNET_ATS_SessionKiller::task.

Referenced by connect_bl_check_cont(), GST_receive_callback(), and plugin_env_session_start_bl_check_cont().

1509 {
1511  struct GNUNET_ATS_SessionKiller *sk;
1512 
1513  for (sk = sk_head; NULL != sk; sk = sk->next)
1514  if (sk->session == session)
1515  return;
1516  plugin = GST_plugins_find(plugin_name);
1517  if (NULL == plugin)
1518  {
1519  GNUNET_break(0);
1520  return;
1521  }
1522  /* need to issue disconnect asynchronously */
1523  sk = GNUNET_new(struct GNUNET_ATS_SessionKiller);
1524  sk->session = session;
1525  sk->plugin = plugin;
1528 }
static struct GNUNET_ATS_SessionKiller * sk_head
Head of DLL of asynchronous tasks to kill sessions.
#define GNUNET_CONTAINER_DLL_insert(head, tail, element)
Insert an element at the head of a DLL.
struct GNUNET_TRANSPORT_PluginFunctions * plugin
Plugin for the session.
Each plugin is required to return a pointer to a struct of this type as the return value from its ent...
struct GNUNET_ATS_SessionKiller * next
Kept in a DLL.
static void kill_session_task(void *cls)
Task to asynchronously terminate a session.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
static struct GNUNET_ATS_SolverFunctions * plugin
Our solver.
struct GNUNET_ATS_Session * session
Session to kill.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_now(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run as soon as possible.
Definition: scheduler.c:1264
static char * plugin_name
Solver plugin name as string.
struct GNUNET_TRANSPORT_PluginFunctions * GST_plugins_find(const char *name)
Obtain the plugin API based on a plugin name.
static struct GNUNET_ATS_SessionKiller * sk_tail
Tail of DLL of asynchronous tasks to kill sessions.
Information we need for an asynchronous session kill.
struct GNUNET_SCHEDULER_Task * task
The kill task.
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◆ connect_bl_check_cont()

static void connect_bl_check_cont ( void *  cls,
const struct GNUNET_PeerIdentity peer,
const struct GNUNET_HELLO_Address address,
struct GNUNET_ATS_Session session,
int  result 
)
static

Black list check result for try_connect call If connection to the peer is allowed request adddress and ???

Parameters
clsthe message
peerthe peer
addressthe address
sessionthe session
resultthe result

Definition at line 1542 of file gnunet-service-transport.c.

References GNUNET_ERROR_TYPE_INFO, GNUNET_free, GNUNET_i2s(), GNUNET_log, GNUNET_OK, GNUNET_SYSERR, GST_blacklist_abort_matching(), GST_neighbours_handle_session_syn(), GST_plugins_a2s(), kill_session(), msg, and GNUNET_HELLO_Address::transport_name.

Referenced by GST_receive_callback().

1547 {
1548  struct GNUNET_MessageHeader *msg = cls;
1549 
1550  if (GNUNET_OK == result)
1551  {
1552  /* Blacklist allows to speak to this peer, forward SYN to neighbours */
1554  "Received SYN message from peer `%s' at `%s'\n",
1555  GNUNET_i2s(peer),
1556  GST_plugins_a2s(address));
1557  if (GNUNET_OK != GST_neighbours_handle_session_syn(msg, peer))
1558  {
1559  GST_blacklist_abort_matching(address, session);
1560  kill_session(address->transport_name, session);
1561  }
1562  GNUNET_free(msg);
1563  return;
1564  }
1565  GNUNET_free(msg);
1566  if (GNUNET_SYSERR == result)
1567  return; /* check was aborted, session destroyed */
1568  /* Blacklist denies to speak to this peer */
1570  "Discarding SYN message from `%s' due to denied blacklist check\n",
1571  GNUNET_i2s(peer));
1572  kill_session(address->transport_name, session);
1573 }
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
int GST_neighbours_handle_session_syn(const struct GNUNET_MessageHeader *message, const struct GNUNET_PeerIdentity *peer)
We received a &#39;SYN&#39; message from the other peer.
void GST_blacklist_abort_matching(const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session)
Abort blacklist if address and session match.
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
static void kill_session(const char *plugin_name, struct GNUNET_ATS_Session *session)
Force plugin to terminate session due to communication issue.
const char * transport_name
Name of the transport plugin enabling the communication using this address.
static int result
Global testing status.
const char * GST_plugins_a2s(const struct GNUNET_HELLO_Address *address)
Convert a given address to a human-readable format.
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
#define GNUNET_log(kind,...)
Header for all communications.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
#define GNUNET_free(ptr)
Wrapper around free.
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◆ GST_receive_callback()

struct GNUNET_TIME_Relative GST_receive_callback ( void *  cls,
const struct GNUNET_HELLO_Address address,
struct GNUNET_ATS_Session session,
const struct GNUNET_MessageHeader message 
)

Function called by the transport for each received message.

Parameters
clsclosure, const char* with the name of the plugin we received the message from
addressaddress and (claimed) identity of the other peer
messagethe message, NULL if we only care about learning about the delay until we should receive again
sessionidentifier used for this session (NULL for plugins that do not offer bi-directional communication to the sender using the same "connection")
Returns
how long the plugin should wait until receiving more data (plugins that do not support this, can ignore the return value)

Definition at line 1590 of file gnunet-service-transport.c.

References address, connect_bl_check_cont(), end, gettext_noop, GNUNET_break_op, GNUNET_copy_message(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_i2s(), GNUNET_log, GNUNET_MESSAGE_TYPE_HELLO, GNUNET_MESSAGE_TYPE_HELLO_LEGACY, GNUNET_MESSAGE_TYPE_TRANSPORT_PING, GNUNET_MESSAGE_TYPE_TRANSPORT_PONG, GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_ACK, GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_DISCONNECT, GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE, GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE_RESPONSE, GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_QUOTA, GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_SYN, GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_SYN_ACK, GNUNET_NO, GNUNET_OK, GNUNET_STATISTICS_update(), GNUNET_STRINGS_relative_time_to_string(), GNUNET_TIME_UNIT_ZERO, GNUNET_YES, GST_blacklist_abort_matching(), GST_blacklist_test_allowed(), GST_neighbours_handle_disconnect_message(), GST_neighbours_handle_quota_message(), GST_neighbours_handle_session_ack(), GST_neighbours_handle_session_syn_ack(), GST_neighbours_keepalive(), GST_neighbours_keepalive_response(), GST_neighbours_notify_data_recv(), GST_plugins_a2s(), GST_validation_handle_hello(), GST_validation_handle_ping(), GST_validation_handle_pong(), kill_session(), GNUNET_HELLO_Address::peer, plugin_name, process_payload(), ret, GNUNET_ATS_SessionKiller::session, and type.

Referenced by GST_manipulation_recv().

1594 {
1595  const char *plugin_name = cls;
1596  struct GNUNET_TIME_Relative ret;
1597  uint16_t type;
1598 
1600  if (NULL == message)
1601  goto end;
1602  type = ntohs(message->type);
1604  "Received message with type %u from peer `%s' at %s\n",
1605  type,
1606  GNUNET_i2s(&address->peer),
1607  GST_plugins_a2s(address));
1608 
1610  gettext_noop("# bytes total received"),
1611  ntohs(message->size),
1612  GNUNET_NO);
1613  GST_neighbours_notify_data_recv(address, message);
1614  switch (type)
1615  {
1617  /* Legacy HELLO message, discard */
1618  return ret;
1619 
1621  if (GNUNET_OK != GST_validation_handle_hello(message))
1622  {
1623  GNUNET_break_op(0);
1624  GST_blacklist_abort_matching(address, session);
1625  }
1626  return ret;
1627 
1630  "Processing PING from `%s'\n",
1631  GST_plugins_a2s(address));
1632  if (GNUNET_OK !=
1633  GST_validation_handle_ping(&address->peer, message, address, session))
1634  {
1635  GST_blacklist_abort_matching(address, session);
1636  kill_session(plugin_name, session);
1637  }
1638  break;
1639 
1642  "Processing PONG from `%s'\n",
1643  GST_plugins_a2s(address));
1644  if (GNUNET_OK != GST_validation_handle_pong(&address->peer, message))
1645  {
1646  GNUNET_break_op(0);
1647  GST_blacklist_abort_matching(address, session);
1648  kill_session(plugin_name, session);
1649  }
1650  break;
1651 
1653  /* Do blacklist check if communication with this peer is allowed */
1654  (void)GST_blacklist_test_allowed(&address->peer,
1655  NULL,
1657  GNUNET_copy_message(message),
1658  address,
1659  session);
1660  break;
1661 
1663  if (GNUNET_OK !=
1664  GST_neighbours_handle_session_syn_ack(message, address, session))
1665  {
1666  GST_blacklist_abort_matching(address, session);
1667  kill_session(plugin_name, session);
1668  }
1669  break;
1670 
1672  if (GNUNET_OK !=
1673  GST_neighbours_handle_session_ack(message, address, session))
1674  {
1675  GNUNET_break_op(0);
1676  GST_blacklist_abort_matching(address, session);
1677  kill_session(plugin_name, session);
1678  }
1679  break;
1680 
1682  GST_neighbours_handle_disconnect_message(&address->peer, message);
1683  break;
1684 
1686  GST_neighbours_handle_quota_message(&address->peer, message);
1687  break;
1688 
1690  GST_neighbours_keepalive(&address->peer, message);
1691  break;
1692 
1694  GST_neighbours_keepalive_response(&address->peer, message);
1695  break;
1696 
1697  default:
1698  /* should be payload */
1700  gettext_noop("# bytes payload received"),
1701  ntohs(message->size),
1702  GNUNET_NO);
1703  ret = process_payload(address, session, message);
1704  break;
1705  }
1706 end:
1708  "Allowing receive from peer %s to continue in %s\n",
1709  GNUNET_i2s(&address->peer),
1711  return ret;
1712 }
static int end
Set if we are to shutdown all services (including ARM).
Definition: gnunet-arm.c:34
#define GNUNET_MESSAGE_TYPE_TRANSPORT_PING
Transport PING message.
void GST_neighbours_keepalive_response(const struct GNUNET_PeerIdentity *neighbour, const struct GNUNET_MessageHeader *m)
We received a KEEP_ALIVE_RESPONSE message and use this to calculate latency to this peer...
struct GNUNET_STATISTICS_Handle * GST_stats
Statistics handle.
struct GST_BlacklistCheck * GST_blacklist_test_allowed(const struct GNUNET_PeerIdentity *peer, const char *transport_name, GST_BlacklistTestContinuation cont, void *cont_cls, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session)
Test if a peer/transport combination is blacklisted.
void GST_blacklist_abort_matching(const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session)
Abort blacklist if address and session match.
int GST_validation_handle_ping(const struct GNUNET_PeerIdentity *sender, const struct GNUNET_MessageHeader *hdr, const struct GNUNET_HELLO_Address *sender_address, struct GNUNET_ATS_Session *session)
We&#39;ve received a PING.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_QUOTA
Message exchanged between transport services to indicate that the sender should limit its transmissio...
static struct GNUNET_TIME_Relative process_payload(const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, const struct GNUNET_MessageHeader *message)
We received some payload.
#define GNUNET_NO
Definition: gnunet_common.h:78
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
int GST_validation_handle_hello(const struct GNUNET_MessageHeader *hello)
We&#39;ve received a HELLO, check which addresses are new and trigger validation.
void GST_neighbours_keepalive(const struct GNUNET_PeerIdentity *neighbour, const struct GNUNET_MessageHeader *m)
Keep the connection to the given neighbour alive longer, we received a KEEPALIVE (or equivalent); sen...
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
static int ret
Final status code.
Definition: gnunet-arm.c:89
#define GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE_RESPONSE
Response to a GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE message to measure latency in a regular...
int GST_neighbours_handle_session_syn_ack(const struct GNUNET_MessageHeader *message, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session)
We received a &#39;SESSION_SYN_ACK&#39; message from the other peer.
#define GNUNET_MESSAGE_TYPE_HELLO_LEGACY
Previously used for HELLO messages used for communicating peer addresses.
int GST_validation_handle_pong(const struct GNUNET_PeerIdentity *sender, const struct GNUNET_MessageHeader *hdr)
We&#39;ve received a PONG.
uint16_t type
The type of the message (GNUNET_MESSAGE_TYPE_XXXX), in big-endian format.
void GST_neighbours_handle_disconnect_message(const struct GNUNET_PeerIdentity *peer, const struct GNUNET_MessageHeader *msg)
We received a disconnect message from the given peer, validate and process.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_SYN_ACK
Transport SYN_ACK message exchanged between transport services to indicate that a SYN message was acc...
int GST_neighbours_handle_session_ack(const struct GNUNET_MessageHeader *message, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session)
We received a &#39;ACK&#39; message from the other peer.
static void kill_session(const char *plugin_name, struct GNUNET_ATS_Session *session)
Force plugin to terminate session due to communication issue.
#define GNUNET_break_op(cond)
Use this for assertion violations caused by other peers (i.e.
const char * GNUNET_STRINGS_relative_time_to_string(struct GNUNET_TIME_Relative delta, int do_round)
Give relative time in human-readable fancy format.
Definition: strings.c:686
void GST_neighbours_notify_data_recv(const struct GNUNET_HELLO_Address *address, const struct GNUNET_MessageHeader *message)
Track information about data we received from the given address (used to notify ATS about our utiliza...
const char * GST_plugins_a2s(const struct GNUNET_HELLO_Address *address)
Convert a given address to a human-readable format.
static char * plugin_name
Solver plugin name as string.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE
Message send by a peer to notify the other to keep the session alive and measure latency in a regular...
struct GNUNET_PeerIdentity peer
For which peer is this an address?
#define GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_DISCONNECT
Transport DISCONNECT message exchanged between transport services to indicate that a connection shoul...
#define GNUNET_TIME_UNIT_ZERO
Relative time zero.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_PONG
Transport PONG message.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_SYN
Transport SYN message exchanged between transport services to indicate that a session should be marke...
static void connect_bl_check_cont(void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, int result)
Black list check result for try_connect call If connection to the peer is allowed request adddress an...
void GST_neighbours_handle_quota_message(const struct GNUNET_PeerIdentity *peer, const struct GNUNET_MessageHeader *msg)
We received a quota message from the given peer, validate and process.
#define GNUNET_log(kind,...)
#define GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_ACK
Transport ACK message exchanged between transport services to indicate that a SYN_ACK message was acc...
enum GNUNET_TESTBED_UnderlayLinkModelType type
the type of this model
#define GNUNET_YES
Definition: gnunet_common.h:77
#define GNUNET_MESSAGE_TYPE_HELLO
HELLO message with friend only flag used for communicating peer addresses.
static char * address
GNS address for this phone.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
Time for relative time used by GNUnet, in microseconds.
struct GNUNET_MessageHeader * GNUNET_copy_message(const struct GNUNET_MessageHeader *msg)
Create a copy of the given message.
#define gettext_noop(String)
Definition: gettext.h:69
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◆ plugin_env_address_change_notification()

static void plugin_env_address_change_notification ( void *  cls,
int  add_remove,
const struct GNUNET_HELLO_Address address 
)
static

Function that will be called for each address the transport is aware that it might be reachable under.

Update our HELLO.

Parameters
clsname of the plugin (const char*)
add_removeshould the address added (YES) or removed (NO) from the set of valid addresses?
addressthe address to add or remove

Definition at line 1725 of file gnunet-service-transport.c.

References addresses, GNUNET_break, GNUNET_ERROR_TYPE_INFO, GNUNET_log, GNUNET_NO, GNUNET_STATISTICS_update(), GNUNET_YES, and GST_hello_modify_addresses().

Referenced by run().

1729 {
1730  static int addresses = 0;
1731 
1732  if (GNUNET_YES == add_remove)
1733  {
1734  addresses++;
1735  GNUNET_STATISTICS_update(GST_stats, "# transport addresses", 1, GNUNET_NO);
1736  }
1737  else if (GNUNET_NO == add_remove)
1738  {
1739  if (0 == addresses)
1740  {
1741  GNUNET_break(0);
1742  }
1743  else
1744  {
1745  addresses--;
1747  "# transport addresses",
1748  -1,
1749  GNUNET_NO);
1750  }
1751  }
1753  "Transport now has %u addresses to communicate\n",
1754  addresses);
1755  GST_hello_modify_addresses(add_remove, address);
1756 }
struct GNUNET_STATISTICS_Handle * GST_stats
Statistics handle.
#define GNUNET_NO
Definition: gnunet_common.h:78
static struct GNUNET_CONTAINER_MultiPeerMap * addresses
Hashmap to store addresses.
Definition: gnunet-ats.c:146
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
#define GNUNET_log(kind,...)
#define GNUNET_YES
Definition: gnunet_common.h:77
void GST_hello_modify_addresses(int addremove, const struct GNUNET_HELLO_Address *address)
Add or remove an address from this peer&#39;s HELLO message.
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◆ plugin_env_session_end()

static void plugin_env_session_end ( void *  cls,
const struct GNUNET_HELLO_Address address,
struct GNUNET_ATS_Session session 
)
static

Function that will be called whenever the plugin internally cleans up a session pointer and hence the service needs to discard all of those sessions as well.

Plugins that do not use sessions can simply omit calling this function and always use NULL wherever a session pointer is needed. This function should be called BEFORE a potential "TransmitContinuation" from the "TransmitFunction".

Parameters
clsclosure
addresswhich address was the session for
sessionwhich session is being destoyed

Definition at line 1773 of file gnunet-service-transport.c.

References GNUNET_assert, GNUNET_break, GNUNET_CONTAINER_DLL_remove, GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_i2s(), GNUNET_log, GNUNET_SCHEDULER_cancel(), GST_ats_del_session(), GST_blacklist_abort_matching(), GST_neighbours_session_terminated(), GST_plugins_a2s(), GNUNET_ATS_SessionKiller::next, GNUNET_HELLO_Address::peer, GNUNET_ATS_SessionKiller::session, GNUNET_ATS_SessionKiller::task, and GNUNET_HELLO_Address::transport_name.

Referenced by run().

1776 {
1777  struct GNUNET_ATS_SessionKiller *sk;
1778 
1779  if (NULL == address)
1780  {
1781  GNUNET_break(0);
1782  return;
1783  }
1784  if (NULL == session)
1785  {
1786  GNUNET_break(0);
1787  return;
1788  }
1789  GNUNET_assert(strlen(address->transport_name) > 0);
1790 
1791  GNUNET_log(
1793  "Notification from plugin about terminated session %p from peer `%s' address `%s'\n",
1794  session,
1795  GNUNET_i2s(&address->peer),
1796  GST_plugins_a2s(address));
1797 
1798  GST_neighbours_session_terminated(&address->peer, session);
1799  GST_ats_del_session(address, session);
1800  GST_blacklist_abort_matching(address, session);
1801 
1802  for (sk = sk_head; NULL != sk; sk = sk->next)
1803  {
1804  if (sk->session == session)
1805  {
1808  GNUNET_free(sk);
1809  break;
1810  }
1811  }
1812 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
static struct GNUNET_ATS_SessionKiller * sk_head
Head of DLL of asynchronous tasks to kill sessions.
void GST_blacklist_abort_matching(const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session)
Abort blacklist if address and session match.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
int GST_neighbours_session_terminated(const struct GNUNET_PeerIdentity *peer, struct GNUNET_ATS_Session *session)
A session was terminated.
struct GNUNET_ATS_SessionKiller * next
Kept in a DLL.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
struct GNUNET_ATS_Session * session
Session to kill.
const char * transport_name
Name of the transport plugin enabling the communication using this address.
const char * GST_plugins_a2s(const struct GNUNET_HELLO_Address *address)
Convert a given address to a human-readable format.
static struct GNUNET_ATS_SessionKiller * sk_tail
Tail of DLL of asynchronous tasks to kill sessions.
struct GNUNET_PeerIdentity peer
For which peer is this an address?
Information we need for an asynchronous session kill.
struct GNUNET_SCHEDULER_Task * task
The kill task.
#define GNUNET_log(kind,...)
void GST_ats_del_session(const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session)
Notify ATS that the session (but not the address) of a given address is no longer relevant...
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
#define GNUNET_free(ptr)
Wrapper around free.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:956
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◆ plugin_env_session_start_bl_check_cont()

static void plugin_env_session_start_bl_check_cont ( void *  cls,
const struct GNUNET_PeerIdentity peer,
const struct GNUNET_HELLO_Address address,
struct GNUNET_ATS_Session session,
int  result 
)
static

Black list check result from blacklist check triggered when a plugin gave us a new session in plugin_env_session_start().

If connection to the peer is disallowed, kill the session.

Parameters
clsNULL
peerthe peer
addressaddress associated with the request
sessionsession associated with the request
resultthe result

Definition at line 1827 of file gnunet-service-transport.c.

References GNUNET_ERROR_TYPE_DEBUG, GNUNET_HELLO_address_check_option(), GNUNET_HELLO_ADDRESS_INFO_INBOUND, GNUNET_log, GNUNET_OK, GNUNET_YES, GST_plugins_a2s(), GST_validation_handle_address(), kill_session(), and GNUNET_HELLO_Address::transport_name.

Referenced by plugin_env_session_start().

1833 {
1834  if (GNUNET_OK != result)
1835  {
1836  kill_session(address->transport_name, session);
1837  return;
1838  }
1839  if (GNUNET_YES !=
1842  {
1844  "Informing verifier about inbound session's address `%s'\n",
1845  GST_plugins_a2s(address));
1847  }
1848 }
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
int GNUNET_HELLO_address_check_option(const struct GNUNET_HELLO_Address *address, enum GNUNET_HELLO_AddressInfo option)
Check if an address has a local option set.
Definition: address.c:39
static void kill_session(const char *plugin_name, struct GNUNET_ATS_Session *session)
Force plugin to terminate session due to communication issue.
This is an inbound address and cannot be used to initiate an outbound connection to another peer...
const char * transport_name
Name of the transport plugin enabling the communication using this address.
static int result
Global testing status.
const char * GST_plugins_a2s(const struct GNUNET_HELLO_Address *address)
Convert a given address to a human-readable format.
#define GNUNET_log(kind,...)
#define GNUNET_YES
Definition: gnunet_common.h:77
void GST_validation_handle_address(const struct GNUNET_HELLO_Address *address)
Validate an individual address.
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◆ plugin_env_session_start()

static void plugin_env_session_start ( void *  cls,
const struct GNUNET_HELLO_Address address,
struct GNUNET_ATS_Session session,
enum GNUNET_NetworkType  scope 
)
static

Plugin tells transport service about a new inbound session.

Parameters
clsunused
addressthe address
sessionthe new session
scopenetwork scope information

Definition at line 1860 of file gnunet-service-transport.c.

References GNUNET_break, GNUNET_ERROR_TYPE_INFO, GNUNET_HELLO_address_check_option(), GNUNET_HELLO_ADDRESS_INFO_INBOUND, GNUNET_i2s(), GNUNET_log, GNUNET_NT_UNSPECIFIED, GNUNET_YES, GST_ats_add_inbound_address(), GST_blacklist_test_allowed(), GST_plugins_a2s(), GNUNET_HELLO_Address::peer, plugin_env_session_start_bl_check_cont(), GNUNET_ATS_Properties::scope, scope, and GNUNET_HELLO_Address::transport_name.

Referenced by run().

1864 {
1865  struct GNUNET_ATS_Properties prop;
1866 
1867  if (NULL == address)
1868  {
1869  GNUNET_break(0);
1870  return;
1871  }
1872  if (NULL == session)
1873  {
1874  GNUNET_break(0);
1875  return;
1876  }
1877  GNUNET_log(
1879  "Notification from plugin `%s' about new session from peer `%s' address `%s'\n",
1880  address->transport_name,
1881  GNUNET_i2s(&address->peer),
1882  GST_plugins_a2s(address));
1883  if (GNUNET_YES ==
1886  {
1887  /* inbound is always new, but outbound MAY already be known, but
1888  for example for UNIX, we have symmetric connections and thus we
1889  may not know the address yet; add if necessary! */
1890  /* FIXME: maybe change API here so we just pass scope? */
1891  memset(&prop, 0, sizeof(prop));
1893  prop.scope = scope;
1894  GST_ats_add_inbound_address(address, session, &prop);
1895  }
1896  /* Do blacklist check if communication with this peer is allowed */
1897  (void)GST_blacklist_test_allowed(&address->peer,
1898  address->transport_name,
1900  NULL,
1901  address,
1902  session);
1903 }
struct GST_BlacklistCheck * GST_blacklist_test_allowed(const struct GNUNET_PeerIdentity *peer, const char *transport_name, GST_BlacklistTestContinuation cont, void *cont_cls, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session)
Test if a peer/transport combination is blacklisted.
ATS performance characteristics for an address.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
int GNUNET_HELLO_address_check_option(const struct GNUNET_HELLO_Address *address, enum GNUNET_HELLO_AddressInfo option)
Check if an address has a local option set.
Definition: address.c:39
This is an inbound address and cannot be used to initiate an outbound connection to another peer...
static enum GNUNET_NetworkType scope
Which network scope do we belong to?
const char * transport_name
Name of the transport plugin enabling the communication using this address.
static void plugin_env_session_start_bl_check_cont(void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, int result)
Black list check result from blacklist check triggered when a plugin gave us a new session in plugin_...
void GST_ats_add_inbound_address(const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, const struct GNUNET_ATS_Properties *prop)
Notify ATS about a new inbound address.
const char * GST_plugins_a2s(const struct GNUNET_HELLO_Address *address)
Convert a given address to a human-readable format.
struct GNUNET_PeerIdentity peer
For which peer is this an address?
#define GNUNET_log(kind,...)
#define GNUNET_YES
Definition: gnunet_common.h:77
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
Category of last resort.
Definition: gnunet_nt_lib.h:39
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◆ ats_request_address_change()

static void ats_request_address_change ( void *  cls,
const struct GNUNET_PeerIdentity peer,
const struct GNUNET_HELLO_Address address,
struct GNUNET_ATS_Session session,
struct GNUNET_BANDWIDTH_Value32NBO  bandwidth_out,
struct GNUNET_BANDWIDTH_Value32NBO  bandwidth_in 
)
static

Function called by ATS to notify the callee that the assigned bandwidth or address for a given peer was changed.

If the callback is called with address/bandwidth assignments of zero, the ATS disconnect function will still be called once the disconnect actually happened.

Parameters
clsclosure
peerthe peer this address is intended for
addressaddress to use (for peer given in address)
sessionsession to use (if available)
bandwidth_outassigned outbound bandwidth for the connection in NBO, 0 to disconnect from peer
bandwidth_inassigned inbound bandwidth for the connection in NBO, 0 to disconnect from peer
atsATS information
ats_countnumber of ats elements

Definition at line 1925 of file gnunet-service-transport.c.

References GNUNET_assert, GNUNET_ERROR_TYPE_INFO, GNUNET_i2s(), GNUNET_log, GNUNET_NO, GNUNET_STATISTICS_update(), GST_neighbours_force_disconnect(), GST_neighbours_switch_to_address(), and GNUNET_BANDWIDTH_Value32NBO::value__.

Referenced by run().

1931 {
1932  uint32_t bw_in = ntohl(bandwidth_in.value__);
1933  uint32_t bw_out = ntohl(bandwidth_out.value__);
1934 
1935  if (NULL == peer)
1936  {
1937  /* ATS service died, all suggestions become invalid!
1938  (but we'll keep using the allocations for a little
1939  while, to keep going while ATS restarts) */
1940  /* FIXME: We should drop all
1941  connections now, as ATS won't explicitly tell
1942  us and be unaware of ongoing resource allocations! */
1943  return;
1944  }
1945  /* ATS tells me to disconnect from peer */
1946  if ((0 == bw_in) && (0 == bw_out))
1947  {
1949  "ATS tells me to disconnect from peer `%s'\n",
1950  GNUNET_i2s(peer));
1952  return;
1953  }
1954  GNUNET_assert(NULL != address);
1956  "# ATS suggestions received",
1957  1,
1958  GNUNET_NO);
1960  session,
1961  bandwidth_in,
1962  bandwidth_out);
1963 }
struct GNUNET_STATISTICS_Handle * GST_stats
Statistics handle.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define GNUNET_NO
Definition: gnunet_common.h:78
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
uint32_t value__
The actual value (bytes per second).
void GST_neighbours_switch_to_address(const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
For the given peer, switch to this address.
void GST_neighbours_force_disconnect(const struct GNUNET_PeerIdentity *target)
If we have an active connection to the given target, it must be shutdown.
#define GNUNET_log(kind,...)
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
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◆ confirm_or_drop_neighbour()

static void confirm_or_drop_neighbour ( void *  cls,
const struct GNUNET_PeerIdentity peer,
const struct GNUNET_HELLO_Address address,
struct GNUNET_ATS_Session session,
int  allowed 
)
static

Got the result about an existing connection from a new blacklister.

Shutdown the neighbour if necessary.

Parameters
clsunused
peerthe neighbour that was investigated
addressaddress associated with the request
sessionsession associated with the request
allowedGNUNET_OK if we can keep it, GNUNET_NO if we must shutdown the connection

Definition at line 1994 of file gnunet-service-transport.c.

References gettext_noop, GNUNET_NO, GNUNET_OK, GNUNET_STATISTICS_update(), and GST_neighbours_force_disconnect().

Referenced by test_connection_ok().

1999 {
2000  if (GNUNET_OK == allowed)
2001  return; /* we're done */
2003  gettext_noop("# disconnects due to blacklist"),
2004  1,
2005  GNUNET_NO);
2007 }
struct GNUNET_STATISTICS_Handle * GST_stats
Statistics handle.
#define GNUNET_NO
Definition: gnunet_common.h:78
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
void GST_neighbours_force_disconnect(const struct GNUNET_PeerIdentity *target)
If we have an active connection to the given target, it must be shutdown.
#define gettext_noop(String)
Definition: gettext.h:69
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◆ test_connection_ok()

static void test_connection_ok ( void *  cls,
const struct GNUNET_PeerIdentity peer,
const struct GNUNET_HELLO_Address address,
enum GNUNET_TRANSPORT_PeerState  state,
struct GNUNET_TIME_Absolute  state_timeout,
struct GNUNET_BANDWIDTH_Value32NBO  bandwidth_in,
struct GNUNET_BANDWIDTH_Value32NBO  bandwidth_out 
)
static

Test if an existing connection is still acceptable given a new blacklisting client.

Parameters
clsthe struct TestConnectionContext *
peeridentity of the peer
addressthe address
statecurrent state this peer is in
state_timeouttimeout for the current state of the peer
bandwidth_inbandwidth assigned inbound
bandwidth_outbandwidth assigned outbound

Definition at line 2023 of file gnunet-service-transport.c.

References GST_BlacklistCheck::address, GST_BlacklistCheck::bl_pos, confirm_or_drop_neighbour(), GST_BlacklistCheck::cont, GST_BlacklistCheck::cont_cls, do_blacklist_check(), TestConnectionContext::first, GNUNET_CONTAINER_DLL_insert, GNUNET_HELLO_address_copy(), GNUNET_new, GNUNET_NO, GNUNET_SCHEDULER_add_now(), GNUNET_YES, peer, GST_BlacklistCheck::peer, GST_BlacklistCheck::task, and TestConnectionContext::tc.

Referenced by handle_client_blacklist_init().

2030 {
2031  struct TestConnectionContext *tcc = cls;
2032  struct GST_BlacklistCheck *bc;
2033 
2034  bc = GNUNET_new(struct GST_BlacklistCheck);
2036  bc->peer = *peer;
2037  bc->address = GNUNET_HELLO_address_copy(address);
2039  bc->cont_cls = NULL;
2040  bc->bl_pos = tcc->tc;
2041  if (GNUNET_YES == tcc->first)
2042  {
2043  /* all would wait for the same client, no need to
2044  * create more than just the first task right now */
2046  tcc->first = GNUNET_NO;
2047  }
2048 }
struct GNUNET_HELLO_Address * address
Address for GST_blacklist_abort_matching(), can be NULL.
struct TransportClient * tc
Handle to the blacklisting client we need to ask.
Context we use when performing a blacklist check.
#define GNUNET_CONTAINER_DLL_insert(head, tail, element)
Insert an element at the head of a DLL.
static void confirm_or_drop_neighbour(void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, int allowed)
Got the result about an existing connection from a new blacklister.
#define GNUNET_NO
Definition: gnunet_common.h:78
Closure for test_connection_ok().
#define GNUNET_new(type)
Allocate a struct or union of the given type.
static void do_blacklist_check(void *cls)
Perform next action in the blacklist check.
static struct GST_BlacklistCheck * bc_head
Head of DLL of active blacklisting queries.
int first
Is this the first neighbour we&#39;re checking?
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_now(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run as soon as possible.
Definition: scheduler.c:1264
struct GNUNET_TESTBED_Peer * peer
The peer associated with this model.
GST_BlacklistTestContinuation cont
Continuation to call with the result.
struct TransportClient * bl_pos
Our current position in the blacklisters list.
struct GNUNET_SCHEDULER_Task * task
Current task performing the check.
struct GNUNET_HELLO_Address * GNUNET_HELLO_address_copy(const struct GNUNET_HELLO_Address *address)
Copy an address struct.
Definition: address.c:109
#define GNUNET_YES
Definition: gnunet_common.h:77
struct GNUNET_PeerIdentity peer
Peer being checked.
void * cont_cls
Closure for cont.
static struct GST_BlacklistCheck * bc_tail
Tail of DLL of active blacklisting queries.
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◆ handle_client_blacklist_init()

static void handle_client_blacklist_init ( void *  cls,
const struct GNUNET_MessageHeader message 
)
static

Initialize a blacklisting client.

We got a blacklist-init message from this client, add it to the list of clients to query for blacklisting.

Parameters
clsthe client
messagethe blacklist-init message that was sent

Definition at line 2060 of file gnunet-service-transport.c.

References TransportClient::blacklist, TransportClient::client, CT_BLACKLIST, CT_NONE, TransportClient::details, TestConnectionContext::first, GNUNET_break, GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_SERVICE_client_drop(), GNUNET_SERVICE_client_mark_monitor(), GNUNET_YES, GST_neighbours_iterate(), tc, TestConnectionContext::tc, test_connection_ok(), and TransportClient::type.

2062 {
2063  struct TransportClient *tc = cls;
2064  struct TestConnectionContext tcc;
2065 
2066  if (CT_NONE != tc->type)
2067  {
2068  GNUNET_break(0);
2070  return;
2071  }
2073  tc->type = CT_BLACKLIST;
2074  tc->details.blacklist.call_receive_done = GNUNET_YES;
2075  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "New blacklist client %p\n", tc);
2076  /* confirm that all existing connections are OK! */
2077  tcc.tc = tc;
2078  tcc.first = GNUNET_YES;
2080 }
void GST_neighbours_iterate(GST_NeighbourIterator cb, void *cb_cls)
Iterate over all connected neighbours.
struct TransportClient::@81::@82 blacklist
Additional details if type is CT_BLACKLIST.
static struct GNUNET_SCHEDULER_TaskContext tc
Task context of the current task.
Definition: scheduler.c:410
We do not know yet (client is fresh).
Closure for test_connection_ok().
struct GNUNET_SERVICE_Client * client
Handle to the client.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
enum ClientType type
What type of client is this?
It is a blacklist, query about allowed connections.
void GNUNET_SERVICE_client_mark_monitor(struct GNUNET_SERVICE_Client *c)
Set the &#39;monitor&#39; flag on this client.
Definition: service.c:2394
void GNUNET_SERVICE_client_drop(struct GNUNET_SERVICE_Client *c)
Ask the server to disconnect from the given client.
Definition: service.c:2315
union TransportClient::@75 details
Client connected to the transport service.
#define GNUNET_log(kind,...)
#define GNUNET_YES
Definition: gnunet_common.h:77
static void test_connection_ok(void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, enum GNUNET_TRANSPORT_PeerState state, struct GNUNET_TIME_Absolute state_timeout, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
Test if an existing connection is still acceptable given a new blacklisting client.
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◆ free_blacklist_entry()

static int free_blacklist_entry ( void *  cls,
const struct GNUNET_PeerIdentity key,
void *  value 
)
static

Free the given entry in the blacklist.

Parameters
clsunused
keyhost identity (unused)
valuethe blacklist entry
Returns
GNUNET_OK (continue to iterate)

Definition at line 2092 of file gnunet-service-transport.c.

References GNUNET_free_non_null, GNUNET_OK, and value.

Referenced by shutdown_task().

2095 {
2096  char *be = value;
2097 
2099  return GNUNET_OK;
2100 }
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
#define GNUNET_free_non_null(ptr)
Free the memory pointed to by ptr if ptr is not NULL.
static char * value
Value of the record to add/remove.
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◆ handle_client_set_metric()

static void handle_client_set_metric ( void *  cls,
const struct TrafficMetricMessage tm 
)
static

Set traffic metric to manipulate.

Parameters
clsclosure
messagecontaining information

Definition at line 2110 of file gnunet-service-transport.c.

References TransportClient::client, GNUNET_SERVICE_client_continue(), GST_manipulation_set_metric(), and tc.

2111 {
2112  struct TransportClient *tc = cls;
2113 
2116 }
static struct GNUNET_SCHEDULER_TaskContext tc
Task context of the current task.
Definition: scheduler.c:410
struct GNUNET_SERVICE_Client * client
Handle to the client.
void GST_manipulation_set_metric(const struct TrafficMetricMessage *tm)
Set traffic metric to manipulate.
Client connected to the transport service.
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2234
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◆ shutdown_task()

static void shutdown_task ( void *  cls)
static

Function called when the service shuts down.

Unloads our plugins and cancels pending validations.

Parameters
clsclosure, unused

Definition at line 2126 of file gnunet-service-transport.c.

References free_blacklist_entry(), GNUNET_ATS_connectivity_done(), GNUNET_ATS_scheduling_done(), GNUNET_CONTAINER_DLL_remove, GNUNET_CONTAINER_multipeermap_destroy(), GNUNET_CONTAINER_multipeermap_iterate(), GNUNET_free, GNUNET_NO, GNUNET_notification_context_destroy(), GNUNET_NT_scanner_done(), GNUNET_PEERINFO_disconnect(), GNUNET_STATISTICS_destroy(), GST_ats_done(), GST_hello_stop(), GST_manipulation_stop(), GST_neighbours_stop(), GST_plugins_unload(), and GST_validation_stop().

Referenced by run().

2127 {
2128  struct AddressToStringContext *cur;
2129 
2133  GST_ats_done();
2135  GST_ats = NULL;
2137  GST_ats_connect = NULL;
2139  GST_is = NULL;
2140  while (NULL != (cur = a2s_head))
2141  {
2143  GNUNET_free(cur);
2144  }
2145  if (NULL != plugin_nc)
2146  {
2148  plugin_nc = NULL;
2149  }
2151  active_stccs = NULL;
2152  if (NULL != blacklist)
2153  {
2156  NULL);
2158  blacklist = NULL;
2159  }
2160  GST_hello_stop();
2162 
2163  if (NULL != GST_peerinfo)
2164  {
2166  GST_peerinfo = NULL;
2167  }
2168  if (NULL != GST_stats)
2169  {
2171  GST_stats = NULL;
2172  }
2173  if (NULL != GST_my_private_key)
2174  {
2176  GST_my_private_key = NULL;
2177  }
2178 }
struct GNUNET_CRYPTO_EddsaPrivateKey * GST_my_private_key
Our private key.
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
static struct GNUNET_CONTAINER_MultiPeerMap * active_stccs
Map of peer identities to active send transmit continuation contexts.
void GST_ats_done()
Shutdown ATS subsystem.
struct GNUNET_STATISTICS_Handle * GST_stats
Statistics handle.
void GST_manipulation_stop()
Stop traffic manipulation.
static int free_blacklist_entry(void *cls, const struct GNUNET_PeerIdentity *key, void *value)
Free the given entry in the blacklist.
void GNUNET_ATS_scheduling_done(struct GNUNET_ATS_SchedulingHandle *sh)
Client is done with ATS scheduling, release resources.
#define GNUNET_NO
Definition: gnunet_common.h:78
void GST_validation_stop()
Stop the validation subsystem.
struct GNUNET_ATS_SchedulingHandle * GST_ats
ATS scheduling handle.
void GNUNET_STATISTICS_destroy(struct GNUNET_STATISTICS_Handle *h, int sync_first)
Destroy a handle (free all state associated with it).
void GNUNET_CONTAINER_multipeermap_destroy(struct GNUNET_CONTAINER_MultiPeerMap *map)
Destroy a hash map.
struct GNUNET_NT_InterfaceScanner * GST_is
Interface scanner determines our LAN address range(s).
void GST_neighbours_stop()
Cleanup the neighbours subsystem.
static struct AddressToStringContext * a2s_tail
Tail of linked list of all pending address iterations.
void GNUNET_NT_scanner_done(struct GNUNET_NT_InterfaceScanner *is)
Terminate interface scanner.
Definition: nt.c:419
static struct GNUNET_CONTAINER_MultiPeerMap * blacklist
Hashmap of blacklisted peers.
struct GNUNET_ATS_ConnectivityHandle * GST_ats_connect
ATS connectivity handle.
int GNUNET_CONTAINER_multipeermap_iterate(struct GNUNET_CONTAINER_MultiPeerMap *map, GNUNET_CONTAINER_PeerMapIterator it, void *it_cls)
Iterate over all entries in the map.
static struct AddressToStringContext * a2s_head
Head of linked list of all pending address iterations.
struct GNUNET_PEERINFO_Handle * GST_peerinfo
Handle to peerinfo service.
void GST_plugins_unload()
Unload all plugins.
static struct GNUNET_NotificationContext * plugin_nc
Notification context, to send updates on changes to active plugin connections.
void GNUNET_PEERINFO_disconnect(struct GNUNET_PEERINFO_Handle *h)
Disconnect from the peerinfo service.
Definition: peerinfo_api.c:154
void GNUNET_notification_context_destroy(struct GNUNET_NotificationContext *nc)
Destroy the context, force disconnect for all subscribers.
Definition: nc.c:135
void GNUNET_ATS_connectivity_done(struct GNUNET_ATS_ConnectivityHandle *ch)
Client is done with ATS connectivity management, release resources.
Context for address to string operations.
void GST_hello_stop()
Shutdown the HELLO module.
#define GNUNET_free(ptr)
Wrapper around free.
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◆ handle_client_blacklist_reply()

static void handle_client_blacklist_reply ( void *  cls,
const struct BlacklistMessage msg 
)
static

A blacklisting client has sent us reply.

Process it.

Parameters
clsthe client
msgthe blacklist-reply message that was sent

Definition at line 2235 of file gnunet-service-transport.c.

References GST_BlacklistCheck::address, GST_BlacklistCheck::bl_pos, TransportClient::blacklist, TransportClient::client, GST_BlacklistCheck::cont, GST_BlacklistCheck::cont_cls, CT_BLACKLIST, TransportClient::details, do_blacklist_check(), GNUNET_assert, GNUNET_break, GNUNET_CONTAINER_DLL_insert, GNUNET_CONTAINER_DLL_remove, GNUNET_ERROR_TYPE_DEBUG, GNUNET_i2s(), GNUNET_log, GNUNET_NO, GNUNET_SCHEDULER_add_now(), GNUNET_SERVICE_client_continue(), GNUNET_SERVICE_client_drop(), GNUNET_SYSERR, GNUNET_YES, GST_blacklist_test_cancel(), BlacklistMessage::is_allowed, GST_BlacklistCheck::next, TransportClient::next, GST_BlacklistCheck::peer, BlacklistMessage::peer, GST_BlacklistCheck::session, GST_BlacklistCheck::task, tc, and TransportClient::type.

2236 {
2237  struct TransportClient *tc = cls;
2238  struct GST_BlacklistCheck *bc;
2239 
2240  if (CT_BLACKLIST != tc->type)
2241  {
2242  GNUNET_break(0);
2244  return;
2245  }
2247  "Blacklist client %p sent reply for `%s'\n",
2248  tc,
2249  GNUNET_i2s(&msg->peer));
2250  bc = tc->details.blacklist.bc;
2251  tc->details.blacklist.bc = NULL;
2252  tc->details.blacklist.waiting_for_reply = GNUNET_NO;
2253  tc->details.blacklist.call_receive_done = GNUNET_YES;
2254  if (NULL != bc)
2255  {
2256  /* only run this if the blacklist check has not been
2257  * cancelled in the meantime... */
2258  GNUNET_assert(bc->bl_pos == tc);
2259  if (ntohl(msg->is_allowed) == GNUNET_SYSERR)
2260  {
2262  "Blacklist check failed, peer not allowed\n");
2263  /* For the duration of the continuation, make the ongoing
2264  check invisible (to avoid double-cancellation); then
2265  add it back again so we can re-use GST_blacklist_test_cancel() */
2267  bc->cont(bc->cont_cls, &bc->peer, bc->address, bc->session, GNUNET_NO);
2270  tc->details.blacklist.call_receive_done = GNUNET_NO;
2272  return;
2273  }
2274  else
2275  {
2277  "Blacklist check succeeded, continuing with checks\n");
2278  tc->details.blacklist.call_receive_done = GNUNET_NO;
2280  bc->bl_pos = tc->next;
2282  }
2283  }
2284  /* check if any other blacklist checks are waiting for this blacklister */
2285  for (bc = bc_head; bc != NULL; bc = bc->next)
2286  if ((bc->bl_pos == tc) && (NULL == bc->task))
2287  {
2289  break;
2290  }
2291 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
struct GNUNET_HELLO_Address * address
Address for GST_blacklist_abort_matching(), can be NULL.
struct TransportClient::@81::@82 blacklist
Additional details if type is CT_BLACKLIST.
Context we use when performing a blacklist check.
#define GNUNET_CONTAINER_DLL_insert(head, tail, element)
Insert an element at the head of a DLL.
struct GNUNET_PeerIdentity peer
Which peer is being blacklisted or queried?
Definition: transport.h:586
uint32_t is_allowed
0 for the query, GNUNET_OK (allowed) or GNUNET_SYSERR (disallowed) for the response.
Definition: transport.h:581
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
static struct GNUNET_SCHEDULER_TaskContext tc
Task context of the current task.
Definition: scheduler.c:410
#define GNUNET_NO
Definition: gnunet_common.h:78
static void do_blacklist_check(void *cls)
Perform next action in the blacklist check.
struct GNUNET_SERVICE_Client * client
Handle to the client.
struct GST_BlacklistCheck * next
This is a linked list.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
enum ClientType type
What type of client is this?
It is a blacklist, query about allowed connections.
struct GNUNET_ATS_Session * session
Session for GST_blacklist_abort_matching(), can be NULL.
static struct GST_BlacklistCheck * bc_head
Head of DLL of active blacklisting queries.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_now(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run as soon as possible.
Definition: scheduler.c:1264
void GNUNET_SERVICE_client_drop(struct GNUNET_SERVICE_Client *c)
Ask the server to disconnect from the given client.
Definition: service.c:2315
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
void GST_blacklist_test_cancel(struct GST_BlacklistCheck *bc)
Cancel a blacklist check.
GST_BlacklistTestContinuation cont
Continuation to call with the result.
struct TransportClient * next
Kept in a DLL.
struct TransportClient * bl_pos
Our current position in the blacklisters list.
union TransportClient::@75 details
struct GNUNET_SCHEDULER_Task * task
Current task performing the check.
Client connected to the transport service.
#define GNUNET_log(kind,...)
#define GNUNET_YES
Definition: gnunet_common.h:77
struct GNUNET_PeerIdentity peer
Peer being checked.
void * cont_cls
Closure for cont.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2234
static struct GST_BlacklistCheck * bc_tail
Tail of DLL of active blacklisting queries.
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◆ GST_blacklist_add_peer()

void GST_blacklist_add_peer ( const struct GNUNET_PeerIdentity peer,
const char *  transport_name 
)

Add the given peer to the blacklist (for the given transport).

Parameters
peerpeer to blacklist
transport_nametransport to blacklist for this peer, NULL for all

Definition at line 2301 of file gnunet-service-transport.c.

References GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE, GNUNET_CONTAINER_multipeermap_create(), GNUNET_CONTAINER_multipeermap_put(), GNUNET_ERROR_TYPE_INFO, GNUNET_i2s(), GNUNET_log, GNUNET_NO, GNUNET_strdup, transport, and TRANSPORT_BLACKLIST_HT_SIZE.

Referenced by blacklist_cfg_iter(), and run().

2303 {
2304  char *transport = NULL;
2305 
2306  if (NULL != transport_name)
2307  {
2309  "Adding peer `%s' with plugin `%s' to blacklist\n",
2310  GNUNET_i2s(peer),
2311  transport_name);
2312  transport = GNUNET_strdup(transport_name);
2313  }
2314  else
2316  "Adding peer `%s' with all plugins to blacklist\n",
2317  GNUNET_i2s(peer));
2318  if (NULL == blacklist)
2319  blacklist =
2321  GNUNET_NO);
2322 
2324  peer,
2325  transport,
2327 }
static struct GNUNET_TRANSPORT_CoreHandle * transport
Transport service.
#define GNUNET_NO
Definition: gnunet_common.h:78
struct GNUNET_CONTAINER_MultiPeerMap * GNUNET_CONTAINER_multipeermap_create(unsigned int len, int do_not_copy_keys)
Create a multi peer map (hash map for public keys of peers).
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
static struct GNUNET_CONTAINER_MultiPeerMap * blacklist
Hashmap of blacklisted peers.
Allow multiple values with the same key.
int GNUNET_CONTAINER_multipeermap_put(struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key, void *value, enum GNUNET_CONTAINER_MultiHashMapOption opt)
Store a key-value pair in the map.
#define GNUNET_log(kind,...)
#define TRANSPORT_BLACKLIST_HT_SIZE
Size of the blacklist hash map.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
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◆ GST_blacklist_abort_matching()

void GST_blacklist_abort_matching ( const struct GNUNET_HELLO_Address address,
struct GNUNET_ATS_Session session 
)

Abort blacklist if address and session match.

Parameters
addressaddress used to abort matching checks
sessionsession used to abort matching checks

Definition at line 2337 of file gnunet-service-transport.c.

References GST_BlacklistCheck::address, bc_head, GST_BlacklistCheck::cont, GST_BlacklistCheck::cont_cls, GNUNET_HELLO_address_cmp(), GNUNET_SYSERR, GST_blacklist_test_cancel(), GST_BlacklistCheck::next, GST_BlacklistCheck::peer, and GST_BlacklistCheck::session.

Referenced by connect_bl_check_cont(), GST_receive_callback(), and plugin_env_session_end().

2339 {
2340  struct GST_BlacklistCheck *bc;
2341  struct GST_BlacklistCheck *n;
2342 
2343  n = bc_head;
2344  while (NULL != (bc = n))
2345  {
2346  n = bc->next;
2347  if ((bc->session == session) &&
2348  (0 == GNUNET_HELLO_address_cmp(bc->address, address)))
2349  {
2350  bc->cont(bc->cont_cls,
2351  &bc->peer,
2352  bc->address,
2353  bc->session,
2354  GNUNET_SYSERR);
2356  }
2357  }
2358 }
struct GNUNET_HELLO_Address * address
Address for GST_blacklist_abort_matching(), can be NULL.
Context we use when performing a blacklist check.
struct GST_BlacklistCheck * next
This is a linked list.
struct GNUNET_ATS_Session * session
Session for GST_blacklist_abort_matching(), can be NULL.
static struct GST_BlacklistCheck * bc_head
Head of DLL of active blacklisting queries.
int GNUNET_HELLO_address_cmp(const struct GNUNET_HELLO_Address *a1, const struct GNUNET_HELLO_Address *a2)
Compare two addresses.
Definition: address.c:130
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
void GST_blacklist_test_cancel(struct GST_BlacklistCheck *bc)
Cancel a blacklist check.
GST_BlacklistTestContinuation cont
Continuation to call with the result.
struct GNUNET_PeerIdentity peer
Peer being checked.
void * cont_cls
Closure for cont.
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◆ test_blacklisted()

static int test_blacklisted ( void *  cls,
const struct GNUNET_PeerIdentity key,
void *  value 
)
static

Test if the given blacklist entry matches.

If so, abort the iteration.

Parameters
clsthe transport name to match (const char*)
keythe key (unused)
valuethe 'char *' (name of a blacklisted transport)
Returns
GNUNET_OK if the entry does not match, GNUNET_NO if it matches

Definition at line 2371 of file gnunet-service-transport.c.

References GNUNET_ERROR_TYPE_DEBUG, GNUNET_i2s(), GNUNET_log, GNUNET_NO, GNUNET_OK, and value.

Referenced by GST_blacklist_test_allowed().

2372 {
2373  const char *transport_name = cls;
2374  char *be = value;
2375 
2376  /* Blacklist entry be:
2377  * (NULL == be): peer is blacklisted with all plugins
2378  * (NULL != be): peer is blacklisted for a specific plugin
2379  *
2380  * If (NULL != transport_name) we look for a transport specific entry:
2381  * if (transport_name == be) forbidden
2382  *
2383  */
2384 
2386  "Comparing BL request for peer `%4s':`%s' with BL entry: `%s'\n",
2387  GNUNET_i2s(key),
2388  (NULL == transport_name) ? "unspecified" : transport_name,
2389  (NULL == be) ? "all plugins" : be);
2390  /* all plugins for this peer were blacklisted: disallow */
2391  if (NULL == value)
2392  return GNUNET_NO;
2393 
2394  /* blacklist check for specific transport */
2395  if ((NULL != transport_name) && (NULL != value))
2396  {
2397  if (0 == strcmp(transport_name, be))
2398  return GNUNET_NO; /* plugin is blacklisted! */
2399  }
2400  return GNUNET_OK;
2401 }
#define GNUNET_NO
Definition: gnunet_common.h:78
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
static char * value
Value of the record to add/remove.
#define GNUNET_log(kind,...)
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
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◆ GST_blacklist_test_allowed()

struct GST_BlacklistCheck* GST_blacklist_test_allowed ( const struct GNUNET_PeerIdentity peer,
const char *  transport_name,
GST_BlacklistTestContinuation  cont,
void *  cont_cls,
const struct GNUNET_HELLO_Address address,
struct GNUNET_ATS_Session session 
)

Test if a peer/transport combination is blacklisted.

Parameters
peerthe identity of the peer to test
transport_namename of the transport to test, never NULL
contfunction to call with result
cont_clsclosure for cont
addressaddress to pass back to cont, can be NULL
sessionsession to pass back to cont, can be NULL
Returns
handle to the blacklist check, NULL if the decision was made instantly and cont was already called

Definition at line 2417 of file gnunet-service-transport.c.

References _, GST_BlacklistCheck::address, TransportClient::bc, GST_BlacklistCheck::bl_pos, GST_BlacklistCheck::cont, GST_BlacklistCheck::cont_cls, CT_BLACKLIST, do_blacklist_check(), gettext_noop, GNUNET_assert, GNUNET_CONTAINER_DLL_insert, GNUNET_CONTAINER_multipeermap_get_multiple(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_INFO, GNUNET_HELLO_address_copy(), GNUNET_i2s(), GNUNET_log, GNUNET_new, GNUNET_NO, GNUNET_OK, GNUNET_SCHEDULER_add_now(), GNUNET_STATISTICS_update(), GNUNET_SYSERR, TransportClient::next, peer, GST_BlacklistCheck::peer, GNUNET_ATS_SessionKiller::session, GST_BlacklistCheck::session, GST_BlacklistCheck::task, tc, test_blacklisted(), and TransportClient::type.

Referenced by GST_neighbours_switch_to_address(), GST_receive_callback(), plugin_env_session_start(), and revalidate_address().

2423 {
2424  struct GST_BlacklistCheck *bc;
2425  struct TransportClient *tc;
2426 
2427  GNUNET_assert(NULL != peer);
2429  "Blacklist check for peer `%s':%s\n",
2430  GNUNET_i2s(peer),
2431  (NULL != transport_name) ? transport_name : "unspecified");
2432 
2433  /* Check local blacklist by iterating over hashmap
2434  * If iteration is aborted, we found a matching blacklist entry */
2435  if ((NULL != blacklist) &&
2436  (GNUNET_SYSERR ==
2438  peer,
2440  (void *)transport_name)))
2441  {
2442  /* Disallowed by config, disapprove instantly */
2444  gettext_noop("# disconnects due to blacklist"),
2445  1,
2446  GNUNET_NO);
2448  _("Disallowing connection to peer `%s' on transport %s\n"),
2449  GNUNET_i2s(peer),
2450  (NULL != transport_name) ? transport_name : "unspecified");
2451  if (NULL != cont)
2452  cont(cont_cls, peer, address, session, GNUNET_NO);
2453  return NULL;
2454  }
2455 
2456  for (tc = clients_head; NULL != tc; tc = tc->next)
2457  if (CT_BLACKLIST == tc->type)
2458  break;
2459  if (NULL == tc)
2460  {
2461  /* no blacklist clients, approve instantly */
2462  if (NULL != cont)
2463  cont(cont_cls, peer, address, session, GNUNET_OK);
2465  "Allowing connection to peer `%s' %s\n",
2466  GNUNET_i2s(peer),
2467  (NULL != transport_name) ? transport_name : "");
2468  return NULL;
2469  }
2470 
2471  /* need to query blacklist clients */
2472  bc = GNUNET_new(struct GST_BlacklistCheck);
2474  bc->peer = *peer;
2475  bc->address = GNUNET_HELLO_address_copy(address);
2476  bc->session = session;
2477  bc->cont = cont;
2478  bc->cont_cls = cont_cls;
2479  bc->bl_pos = tc;
2481  return bc;
2482 }
struct GNUNET_HELLO_Address * address
Address for GST_blacklist_abort_matching(), can be NULL.
Context we use when performing a blacklist check.
#define GNUNET_CONTAINER_DLL_insert(head, tail, element)
Insert an element at the head of a DLL.
struct GNUNET_STATISTICS_Handle * GST_stats
Statistics handle.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
static struct GNUNET_SCHEDULER_TaskContext tc
Task context of the current task.
Definition: scheduler.c:410
#define GNUNET_NO
Definition: gnunet_common.h:78
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
#define GNUNET_new(type)
Allocate a struct or union of the given type.
static void do_blacklist_check(void *cls)
Perform next action in the blacklist check.
static struct TransportClient * clients_head
Head of linked list of all clients to this service.
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
enum ClientType type
What type of client is this?
It is a blacklist, query about allowed connections.
#define _(String)
GNU gettext support macro.
Definition: platform.h:181
struct GNUNET_ATS_Session * session
Session for GST_blacklist_abort_matching(), can be NULL.
static struct GST_BlacklistCheck * bc_head
Head of DLL of active blacklisting queries.
struct GST_BlacklistCheck * bc
Blacklist check that we&#39;re currently performing (or NULL if we&#39;re performing one that has been cancel...
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_now(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run as soon as possible.
Definition: scheduler.c:1264
struct GNUNET_TESTBED_Peer * peer
The peer associated with this model.
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
GST_BlacklistTestContinuation cont
Continuation to call with the result.
static struct GNUNET_CONTAINER_MultiPeerMap * blacklist
Hashmap of blacklisted peers.
static int test_blacklisted(void *cls, const struct GNUNET_PeerIdentity *key, void *value)
Test if the given blacklist entry matches.
struct TransportClient * next
Kept in a DLL.
struct TransportClient * bl_pos
Our current position in the blacklisters list.
struct GNUNET_SCHEDULER_Task * task
Current task performing the check.
struct GNUNET_HELLO_Address * GNUNET_HELLO_address_copy(const struct GNUNET_HELLO_Address *address)
Copy an address struct.
Definition: address.c:109
Client connected to the transport service.
#define GNUNET_log(kind,...)
struct GNUNET_PeerIdentity peer
Peer being checked.
void * cont_cls
Closure for cont.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
int GNUNET_CONTAINER_multipeermap_get_multiple(struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key, GNUNET_CONTAINER_PeerMapIterator it, void *it_cls)
Iterate over all entries in the map that match a particular key.
#define gettext_noop(String)
Definition: gettext.h:69
static struct GST_BlacklistCheck * bc_tail
Tail of DLL of active blacklisting queries.
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◆ GST_blacklist_test_cancel()

void GST_blacklist_test_cancel ( struct GST_BlacklistCheck bc)

Cancel a blacklist check.

Parameters
bccheck to cancel

Definition at line 2491 of file gnunet-service-transport.c.

References GST_BlacklistCheck::address, GST_BlacklistCheck::bl_pos, TransportClient::blacklist, CT_BLACKLIST, TransportClient::details, GNUNET_CONTAINER_DLL_remove, GNUNET_free, GNUNET_free_non_null, GNUNET_SCHEDULER_cancel(), GST_BlacklistCheck::task, and TransportClient::type.

Referenced by cleanup_validation_entry(), do_blacklist_check(), GST_blacklist_abort_matching(), handle_client_blacklist_reply(), and revalidate_address().

2492 {
2494  if (NULL != bc->bl_pos)
2495  {
2496  if ((CT_BLACKLIST == bc->bl_pos->type) &&
2497  (bc->bl_pos->details.blacklist.bc == bc))
2498  {
2499  /* we're at the head of the queue, remove us! */
2500  bc->bl_pos->details.blacklist.bc = NULL;
2501  }
2502  }
2503  if (NULL != bc->task)
2504  {
2506  bc->task = NULL;
2507  }
2509  GNUNET_free(bc);
2510 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
struct GNUNET_HELLO_Address * address
Address for GST_blacklist_abort_matching(), can be NULL.
struct TransportClient::@81::@82 blacklist
Additional details if type is CT_BLACKLIST.
#define GNUNET_free_non_null(ptr)
Free the memory pointed to by ptr if ptr is not NULL.
enum ClientType type
What type of client is this?
It is a blacklist, query about allowed connections.
static struct GST_BlacklistCheck * bc_head
Head of DLL of active blacklisting queries.
struct TransportClient * bl_pos
Our current position in the blacklisters list.
union TransportClient::@75 details
struct GNUNET_SCHEDULER_Task * task
Current task performing the check.
#define GNUNET_free(ptr)
Wrapper around free.
static struct GST_BlacklistCheck * bc_tail
Tail of DLL of active blacklisting queries.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:956
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◆ blacklist_cfg_iter()

static void blacklist_cfg_iter ( void *  cls,
const char *  section,
const char *  option,
const char *  value 
)
static

Function to iterate over options in the blacklisting section for a peer.

Parameters
clsclosure
sectionname of the section
optionname of the option
valuevalue of the option

Definition at line 2522 of file gnunet-service-transport.c.

References _, GNUNET_CRYPTO_eddsa_public_key_from_string(), GNUNET_ERROR_TYPE_INFO, GNUNET_free, GNUNET_i2s(), GNUNET_log, GNUNET_OK, GNUNET_strdup, GST_blacklist_add_peer(), GNUNET_PeerIdentity::public_key, and res.

Referenced by read_blacklist_configuration().

2526 {
2527  unsigned int *res = cls;
2528  struct GNUNET_PeerIdentity peer;
2529  char *plugs;
2530  char *pos;
2531 
2532  if (GNUNET_OK !=
2534  strlen(option),
2535  &peer.public_key))
2536  return;
2537 
2538  if ((NULL == value) || (0 == strcmp(value, "")))
2539  {
2540  /* Blacklist whole peer */
2541  GST_blacklist_add_peer(&peer, NULL);
2543  _("Adding blacklisting entry for peer `%s'\n"),
2544  GNUNET_i2s(&peer));
2545  }
2546  else
2547  {
2548  plugs = GNUNET_strdup(value);
2549  for (pos = strtok(plugs, " "); pos != NULL; pos = strtok(NULL, " "))
2550  {
2552  _("Adding blacklisting entry for peer `%s':`%s'\n"),
2553  GNUNET_i2s(&peer),
2554  pos);
2556  }
2557  GNUNET_free(plugs);
2558  }
2559  (*res)++;
2560 }
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
#define _(String)
GNU gettext support macro.
Definition: platform.h:181
static char * value
Value of the record to add/remove.
static char * option
Name of the option.
Definition: gnunet-config.c:38
static int res
void GST_blacklist_add_peer(const struct GNUNET_PeerIdentity *peer, const char *transport_name)
Add the given peer to the blacklist (for the given transport).
struct GNUNET_TESTBED_Peer * peer
The peer associated with this model.
int GNUNET_CRYPTO_eddsa_public_key_from_string(const char *enc, size_t enclen, struct GNUNET_CRYPTO_EddsaPublicKey *pub)
Convert a string representing a public key to a public key.
Definition: crypto_ecc.c:501
The identity of the host (wraps the signing key of the peer).
#define GNUNET_log(kind,...)