GNUnet  0.20.0
gnunet-service-cadet.c File Reference

GNUnet CADET service with encryption. More...

Include dependency graph for gnunet-service-cadet.c:

Go to the source code of this file.

Data Structures

struct  CadetClient
 Struct containing information about a client of the service. More...
 

Macros

#define LOG(level, ...)   GNUNET_log (level, __VA_ARGS__)
 

Functions

void GSC_send_to_client (struct CadetClient *c, struct GNUNET_MQ_Envelope *env)
 Send a message to a client. More...
 
const char * GSC_2s (struct CadetClient *c)
 Return identifier for a client as a string. More...
 
static struct CadetChannellookup_channel (struct CadetClient *c, struct GNUNET_CADET_ClientChannelNumber ccn)
 Lookup channel of client c by ccn. More...
 
static struct GNUNET_CADET_ClientChannelNumber client_get_next_ccn (struct CadetClient *c)
 Obtain the next LID to use for incoming connections to the given client. More...
 
struct GNUNET_CADET_ClientChannelNumber GSC_bind (struct CadetClient *c, struct CadetChannel *ch, struct CadetPeer *dest, const struct GNUNET_HashCode *port, uint32_t options)
 Bind incoming channel to this client, and notify client about incoming connection. More...
 
static int destroy_tunnels_now (void *cls, const struct GNUNET_PeerIdentity *pid, void *value)
 Callback invoked on all peers to destroy all tunnels that may still exist. More...
 
static int destroy_paths_now (void *cls, const struct GNUNET_PeerIdentity *pid, void *value)
 Callback invoked on all peers to destroy all tunnels that may still exist. More...
 
static void shutdown_rest ()
 Shutdown everything once the clients have disconnected. More...
 
static void shutdown_task (void *cls)
 Task run during shutdown. More...
 
static int bind_loose_channel (void *cls, const struct GNUNET_HashCode *port, void *value)
 We had a remote connection value to port h_port before client cls opened port port. More...
 
static void handle_port_open (void *cls, const struct GNUNET_CADET_PortMessage *pmsg)
 Handle port open request. More...
 
static void handle_port_close (void *cls, const struct GNUNET_CADET_PortMessage *pmsg)
 Handler for port close requests. More...
 
static void handle_channel_create (void *cls, const struct GNUNET_CADET_LocalChannelCreateMessage *tcm)
 Handler for requests for us creating a new channel to another peer and port. More...
 
static void handle_channel_destroy (void *cls, const struct GNUNET_CADET_LocalChannelDestroyMessage *msg)
 Handler for requests of destroying an existing channel. More...
 
static int check_local_data (void *cls, const struct GNUNET_CADET_LocalData *msg)
 Check for client traffic data message is well-formed. More...
 
static void handle_local_data (void *cls, const struct GNUNET_CADET_LocalData *msg)
 Handler for client payload traffic to be send on a channel to another peer. More...
 
static void handle_local_ack (void *cls, const struct GNUNET_CADET_LocalAck *msg)
 Handler for client's ACKs for payload traffic. More...
 
static int get_all_peers_iterator (void *cls, const struct GNUNET_PeerIdentity *peer, void *value)
 Iterator over all peers to send a monitoring client info about each peer. More...
 
static void handle_get_peers (void *cls, const struct GNUNET_MessageHeader *message)
 Handler for client's INFO PEERS request. More...
 
static int path_info_iterator (void *cls, struct CadetPeerPath *path, unsigned int off)
 Iterator over all paths of a peer to build an InfoPeer message. More...
 
static void handle_show_path (void *cls, const struct GNUNET_CADET_RequestPathInfoMessage *msg)
 Handler for client's GNUNET_MESSAGE_TYPE_CADET_LOCAL_REQUEST_INFO_PATH request. More...
 
static int get_all_tunnels_iterator (void *cls, const struct GNUNET_PeerIdentity *peer, void *value)
 Iterator over all tunnels to send a monitoring client info about each tunnel. More...
 
static void handle_info_tunnels (void *cls, const struct GNUNET_MessageHeader *message)
 Handler for client's GNUNET_MESSAGE_TYPE_CADET_LOCAL_REQUEST_INFO_TUNNELS request. More...
 
static void handle_drop_message (void *cls, const struct GNUNET_CADET_RequestDropCadetMessage *message)
 Handler for client's GNUNET_MESSAGE_TYPE_CADET_DROP_CADET_MESSAGE request. More...
 
static void * client_connect_cb (void *cls, struct GNUNET_SERVICE_Client *client, struct GNUNET_MQ_Handle *mq)
 Callback called when a client connects to the service. More...
 
void GSC_handle_remote_channel_destroy (struct CadetClient *c, struct GNUNET_CADET_ClientChannelNumber ccn, struct CadetChannel *ch)
 A channel was destroyed by the other peer. More...
 
void GSC_drop_loose_channel (const struct GNUNET_HashCode *h_port, struct CadetChannel *ch)
 A client that created a loose channel that was not bound to a port disconnected, drop it from the loose_channels list. More...
 
static int channel_destroy_iterator (void *cls, uint32_t key, void *value)
 Iterator for deleting each channel whose client endpoint disconnected. More...
 
static int client_release_ports (void *cls, const struct GNUNET_HashCode *port, void *value)
 Remove client's ports from the global hashmap on disconnect. More...
 
static void client_disconnect_cb (void *cls, struct GNUNET_SERVICE_Client *client, void *internal_cls)
 Callback called when a client disconnected from the service. More...
 
static void run (void *cls, const struct GNUNET_CONFIGURATION_Handle *c, struct GNUNET_SERVICE_Handle *service)
 Setup CADET internals. More...
 
 GNUNET_SERVICE_MAIN ("cadet", GNUNET_SERVICE_OPTION_NONE, &run, &client_connect_cb, &client_disconnect_cb, NULL, GNUNET_MQ_hd_fixed_size(port_open, GNUNET_MESSAGE_TYPE_CADET_LOCAL_PORT_OPEN, struct GNUNET_CADET_PortMessage, NULL), GNUNET_MQ_hd_fixed_size(port_close, GNUNET_MESSAGE_TYPE_CADET_LOCAL_PORT_CLOSE, struct GNUNET_CADET_PortMessage, NULL), GNUNET_MQ_hd_fixed_size(channel_create, GNUNET_MESSAGE_TYPE_CADET_LOCAL_CHANNEL_CREATE, struct GNUNET_CADET_LocalChannelCreateMessage, NULL), GNUNET_MQ_hd_fixed_size(channel_destroy, GNUNET_MESSAGE_TYPE_CADET_LOCAL_CHANNEL_DESTROY, struct GNUNET_CADET_LocalChannelDestroyMessage, NULL), GNUNET_MQ_hd_var_size(local_data, GNUNET_MESSAGE_TYPE_CADET_LOCAL_DATA, struct GNUNET_CADET_LocalData, NULL), GNUNET_MQ_hd_fixed_size(local_ack, GNUNET_MESSAGE_TYPE_CADET_LOCAL_ACK, struct GNUNET_CADET_LocalAck, NULL), GNUNET_MQ_hd_fixed_size(get_peers, GNUNET_MESSAGE_TYPE_CADET_LOCAL_REQUEST_INFO_PEERS, struct GNUNET_MessageHeader, NULL), GNUNET_MQ_hd_fixed_size(show_path, GNUNET_MESSAGE_TYPE_CADET_LOCAL_REQUEST_INFO_PATH, struct GNUNET_CADET_RequestPathInfoMessage, NULL), GNUNET_MQ_hd_fixed_size(info_tunnels, GNUNET_MESSAGE_TYPE_CADET_LOCAL_REQUEST_INFO_TUNNELS, struct GNUNET_MessageHeader, NULL), GNUNET_MQ_hd_fixed_size(drop_message, GNUNET_MESSAGE_TYPE_CADET_DROP_CADET_MESSAGE, struct GNUNET_CADET_RequestDropCadetMessage, NULL), GNUNET_MQ_handler_end())
 Define "main" method using service macro. More...
 

Variables

const struct GNUNET_CONFIGURATION_Handlecfg
 Handle to our configuration. More...
 
struct GNUNET_STATISTICS_Handlestats
 Handle to the statistics service. More...
 
struct GNUNET_ATS_ConnectivityHandleats_ch
 Handle to communicate with ATS. More...
 
struct GNUNET_PeerIdentity my_full_id
 Local peer own ID. More...
 
struct GNUNET_CRYPTO_EddsaPrivateKeymy_private_key
 Own private key. More...
 
int shutting_down
 Signal that shutdown is happening: prevent recovery measures. More...
 
static struct CadetClientclients_head
 DLL with all the clients, head. More...
 
static struct CadetClientclients_tail
 DLL with all the clients, tail. More...
 
static unsigned int next_client_id
 Next ID to assign to a client. More...
 
struct GNUNET_CONTAINER_MultiHashMapopen_ports
 All ports clients of this peer have opened. More...
 
struct GNUNET_CONTAINER_MultiHashMaploose_channels
 Map from ports to channels where the ports were closed at the time we got the inbound connection. More...
 
struct GNUNET_CONTAINER_MultiPeerMappeers
 Map from PIDs to struct CadetPeer entries. More...
 
struct GNUNET_CONTAINER_MultiShortmapconnections
 Map from struct GNUNET_CADET_ConnectionTunnelIdentifier hash codes to struct CadetConnection objects. More...
 
unsigned long long ratchet_messages
 How many messages are needed to trigger an AXOLOTL ratchet advance. More...
 
struct GNUNET_TIME_Relative ratchet_time
 How long until we trigger a ratched advance due to time. More...
 
struct GNUNET_TIME_Relative keepalive_period
 How frequently do we send KEEPALIVE messages on idle connections? More...
 
unsigned long long drop_percent
 Set to non-zero values to create random drops to test retransmissions. More...
 

Detailed Description

GNUnet CADET service with encryption.

Author
Bartlomiej Polot
Christian Grothoff

Dictionary:

  • peer: other cadet instance. If there is direct connection it's a neighbor.
  • path: series of directly connected peer from one peer to another.
  • connection: path which is being used in a tunnel.
  • tunnel: encrypted connection to a peer, neighbor or not.
  • channel: logical link between two clients, on the same or different peers. have properties like reliability.

Definition in file gnunet-service-cadet.c.

Macro Definition Documentation

◆ LOG

#define LOG (   level,
  ... 
)    GNUNET_log (level, __VA_ARGS__)

Definition at line 49 of file gnunet-service-cadet.c.

Function Documentation

◆ GSC_send_to_client()

void GSC_send_to_client ( struct CadetClient c,
struct GNUNET_MQ_Envelope env 
)

Send a message to a client.

Parameters
cclient to get the message
envenvelope with the message

Definition at line 205 of file gnunet-service-cadet.c.

207 {
208  GNUNET_MQ_send (c->mq,
209  env);
210 }
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
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:304
struct GNUNET_MQ_Handle * mq
Handle to communicate with the client.

References env, GNUNET_MQ_send(), and CadetClient::mq.

Referenced by GCCH_handle_channel_plaintext_data(), GCCH_handle_local_ack(), GCCH_handle_local_data(), GSC_handle_remote_channel_destroy(), and send_ack_to_client().

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◆ GSC_2s()

const char* GSC_2s ( struct CadetClient c)

Return identifier for a client as a string.

Parameters
cclient to identify
Returns
string for debugging

Definition at line 220 of file gnunet-service-cadet.c.

221 {
222  static char buf[32];
223 
225  sizeof(buf),
226  "Client(%u)",
227  c->id);
228  return buf;
229 }
static char buf[2048]
int GNUNET_snprintf(char *buf, size_t size, const char *format,...) __attribute__((format(printf
Like snprintf, just aborts if the buffer is of insufficient size.
unsigned int id
ID of the client, mainly for debug messages.

References buf, GNUNET_snprintf(), and CadetClient::id.

Referenced by channel_destroy_iterator(), client_connect_cb(), client_disconnect_cb(), client_release_ports(), GCCH_bind(), GCCH_channel_local_destroy(), GCCH_channel_local_new(), GCCH_debug(), GCCH_handle_channel_plaintext_data(), GCCH_handle_local_ack(), handle_channel_create(), handle_channel_destroy(), handle_local_ack(), handle_local_data(), handle_port_close(), handle_port_open(), and send_ack_to_client().

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◆ lookup_channel()

static struct CadetChannel* lookup_channel ( struct CadetClient c,
struct GNUNET_CADET_ClientChannelNumber  ccn 
)
static

Lookup channel of client c by ccn.

Parameters
cclient to look in
ccnchannel ID to look up
Returns
NULL if no such channel exists

Definition at line 240 of file gnunet-service-cadet.c.

242 {
244  ntohl (ccn.channel_of_client));
245 }
void * GNUNET_CONTAINER_multihashmap32_get(const struct GNUNET_CONTAINER_MultiHashMap32 *map, uint32_t key)
Given a key find a value in the map matching the key.
struct GNUNET_CONTAINER_MultiHashMap32 * channels
Tunnels that belong to this client, indexed by local id, value is a struct CadetChannel.
uint32_t channel_of_client
Values for channel numbering.
Definition: cadet.h:109

Referenced by handle_channel_create(), handle_channel_destroy(), handle_drop_message(), handle_local_ack(), and handle_local_data().

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◆ client_get_next_ccn()

static struct GNUNET_CADET_ClientChannelNumber client_get_next_ccn ( struct CadetClient c)
static

Obtain the next LID to use for incoming connections to the given client.

Parameters
cclient handle

Definition at line 240 of file gnunet-service-cadet.c.

256 {
258 
259  /* increment until we have a free one... */
260  while (NULL !=
261  lookup_channel (c,
262  ccn))
263  {
265  = htonl (1 + (ntohl (ccn.channel_of_client)));
266  if (ntohl (ccn.channel_of_client) >=
268  ccn.channel_of_client = htonl (0);
269  }
271  = htonl (1 + (ntohl (ccn.channel_of_client)));
272  return ccn;
273 }
#define GNUNET_CADET_LOCAL_CHANNEL_ID_CLI
Minimum value for channel IDs of local clients.
Definition: cadet.h:70
static struct CadetChannel * lookup_channel(struct CadetClient *c, struct GNUNET_CADET_ClientChannelNumber ccn)
Lookup channel of client c by ccn.
struct GNUNET_CADET_ClientChannelNumber next_ccn
Channel ID to use for the next incoming channel for this client.
Number uniquely identifying a channel of a client.
Definition: cadet.h:101

References GNUNET_CADET_ClientChannelNumber::channel_of_client, CadetClient::channels, and GNUNET_CONTAINER_multihashmap32_get().

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◆ GSC_bind()

struct GNUNET_CADET_ClientChannelNumber GSC_bind ( struct CadetClient c,
struct CadetChannel ch,
struct CadetPeer dest,
const struct GNUNET_HashCode port,
uint32_t  options 
)

Bind incoming channel to this client, and notify client about incoming connection.

Caller is responsible for notifying the other peer about our acceptance of the channel.

Parameters
cclient to bind to
chchannel to be bound
destpeer that establishes the connection
portport number
optionsoptions
Returns
local channel number assigned to the new client

Definition at line 240 of file gnunet-service-cadet.c.

294 {
295  struct GNUNET_MQ_Envelope *env;
298 
299  ccn = client_get_next_ccn (c);
302  ntohl (
303  ccn.channel_of_client),
304  ch,
307  "Accepting incoming %s from %s on open port %s (%u), assigning ccn %X\n",
308  GCCH_2s (ch),
309  GCP_2s (dest),
310  GNUNET_h2s (port),
311  (uint32_t) ntohl (options),
312  (uint32_t) ntohl (ccn.channel_of_client));
313  /* notify local client about incoming connection! */
314  env = GNUNET_MQ_msg (cm,
316  cm->ccn = ccn;
317  cm->port = *port;
318  cm->opt = htonl (options);
319  cm->peer = *GCP_get_id (dest);
321  env);
322  return ccn;
323 }
struct GNUNET_GETOPT_CommandLineOption options[]
Definition: 002.c:5
static uint16_t port
Port number.
Definition: gnunet-bcd.c:147
static struct GNUNET_CADET_Channel * ch
Channel handle.
Definition: gnunet-cadet.c:117
void GSC_send_to_client(struct CadetClient *c, struct GNUNET_MQ_Envelope *env)
Send a message to a client.
#define LOG(level,...)
static struct GNUNET_CADET_ClientChannelNumber client_get_next_ccn(struct CadetClient *c)
Obtain the next LID to use for incoming connections to the given client.
const char * GCCH_2s(const struct CadetChannel *ch)
Get the static string for identification of the channel.
const struct GNUNET_PeerIdentity * GCP_get_id(struct CadetPeer *cp)
Obtain the peer identity for a struct CadetPeer.
const char * GCP_2s(const struct CadetPeer *cp)
Get the static string for a peer ID.
enum GNUNET_GenericReturnValue GNUNET_CONTAINER_multihashmap32_put(struct GNUNET_CONTAINER_MultiHashMap32 *map, uint32_t key, void *value, enum GNUNET_CONTAINER_MultiHashMapOption opt)
Store a key-value pair in the map.
@ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY
There must only be one value per key; storing a value should fail if a value under the same key alrea...
@ GNUNET_YES
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
const char * GNUNET_h2s(const struct GNUNET_HashCode *hc)
Convert a hash value to a string (for printing debug messages).
@ GNUNET_ERROR_TYPE_DEBUG
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:78
#define GNUNET_MESSAGE_TYPE_CADET_LOCAL_CHANNEL_CREATE
Ask the cadet service to create a new channel.
Message for a client to create channels.
Definition: cadet.h:201
struct GNUNET_PeerIdentity peer
Channel's peer.
Definition: cadet.h:217
struct GNUNET_CADET_ClientChannelNumber ccn
ID of a channel controlled by this client.
Definition: cadet.h:212
struct GNUNET_HashCode port
Port of the channel.
Definition: cadet.h:222

Referenced by GCCH_bind().

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◆ destroy_tunnels_now()

static int destroy_tunnels_now ( void *  cls,
const struct GNUNET_PeerIdentity pid,
void *  value 
)
static

Callback invoked on all peers to destroy all tunnels that may still exist.

Parameters
clsNULL
pididentify of a peer
valuea struct CadetPeer that may still have a tunnel
Returns
GNUNET_OK (iterate over all entries)

Definition at line 336 of file gnunet-service-cadet.c.

339 {
340  struct CadetPeer *cp = value;
341  struct CadetTunnel *t = GCP_get_tunnel (cp,
342  GNUNET_NO);
343 
344  if (NULL != t)
346  return GNUNET_OK;
347 }
static char * value
Value of the record to add/remove.
struct CadetTunnel * GCP_get_tunnel(struct CadetPeer *cp, int create)
Get the tunnel towards a peer.
void GCT_destroy_tunnel_now(struct CadetTunnel *t)
Destroys the tunnel t now, without delay.
static struct GNUNET_SCHEDULER_Task * t
Main task.
@ GNUNET_OK
@ GNUNET_NO
Peer description.
Struct containing all information regarding a tunnel to a peer.

References GCP_get_tunnel(), GCT_destroy_tunnel_now(), GNUNET_NO, GNUNET_OK, t, and value.

Referenced by shutdown_rest().

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◆ destroy_paths_now()

static int destroy_paths_now ( void *  cls,
const struct GNUNET_PeerIdentity pid,
void *  value 
)
static

Callback invoked on all peers to destroy all tunnels that may still exist.

Parameters
clsNULL
pididentify of a peer
valuea struct CadetPeer that may still have a tunnel
Returns
GNUNET_OK (iterate over all entries)

Definition at line 360 of file gnunet-service-cadet.c.

363 {
364  struct CadetPeer *cp = value;
365 
367  return GNUNET_OK;
368 }
void GCP_drop_owned_paths(struct CadetPeer *cp)
Drop all paths owned by this peer, and do not allow new ones to be added: We are shutting down.

References GCP_drop_owned_paths(), GNUNET_OK, and value.

Referenced by shutdown_rest().

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◆ shutdown_rest()

static void shutdown_rest ( )
static

Shutdown everything once the clients have disconnected.

Definition at line 375 of file gnunet-service-cadet.c.

376 {
377  if (NULL != stats)
378  {
380  GNUNET_NO);
381  stats = NULL;
382  }
383  /* Destroy tunnels. Note that all channels must be destroyed first! */
385  NULL);
386  /* All tunnels, channels, connections and CORE must be down before this point. */
388  NULL);
389  /* All paths, tunnels, channels, connections and CORE must be down before this point. */
391  if (NULL != open_ports)
392  {
394  open_ports = NULL;
395  }
396  if (NULL != loose_channels)
397  {
399  loose_channels = NULL;
400  }
401  if (NULL != peers)
402  {
404  peers = NULL;
405  }
406  if (NULL != connections)
407  {
409  connections = NULL;
410  }
411  if (NULL != ats_ch)
412  {
414  ats_ch = NULL;
415  }
416  GCD_shutdown ();
417  GCH_shutdown ();
419  my_private_key = NULL;
420 }
struct GNUNET_CONTAINER_MultiPeerMap * peers
Map from PIDs to struct CadetPeer entries.
struct GNUNET_CONTAINER_MultiShortmap * connections
Map from struct GNUNET_CADET_ConnectionTunnelIdentifier hash codes to struct CadetConnection objects.
struct GNUNET_STATISTICS_Handle * stats
Handle to the statistics service.
struct GNUNET_ATS_ConnectivityHandle * ats_ch
Handle to communicate with ATS.
static int destroy_paths_now(void *cls, const struct GNUNET_PeerIdentity *pid, void *value)
Callback invoked on all peers to destroy all tunnels that may still exist.
struct GNUNET_CONTAINER_MultiHashMap * open_ports
All ports clients of this peer have opened.
struct GNUNET_CONTAINER_MultiHashMap * loose_channels
Map from ports to channels where the ports were closed at the time we got the inbound connection.
struct GNUNET_CRYPTO_EddsaPrivateKey * my_private_key
Own private key.
static int destroy_tunnels_now(void *cls, const struct GNUNET_PeerIdentity *pid, void *value)
Callback invoked on all peers to destroy all tunnels that may still exist.
void GCD_shutdown(void)
Shut down the DHT subsystem.
void GCH_shutdown()
Shut down the hello subsystem.
void GCP_destroy_all_peers()
Clean up all entries about all peers.
void GCP_iterate_all(GNUNET_CONTAINER_PeerMapIterator iter, void *cls)
Iterate over all known peers.
void GNUNET_ATS_connectivity_done(struct GNUNET_ATS_ConnectivityHandle *ch)
Client is done with ATS connectivity management, release resources.
void GNUNET_CONTAINER_multipeermap_destroy(struct GNUNET_CONTAINER_MultiPeerMap *map)
Destroy a hash map.
void GNUNET_CONTAINER_multihashmap_destroy(struct GNUNET_CONTAINER_MultiHashMap *map)
Destroy a hash map.
void GNUNET_CONTAINER_multishortmap_destroy(struct GNUNET_CONTAINER_MultiShortmap *map)
Destroy a hash map.
#define GNUNET_free(ptr)
Wrapper around free.
void GNUNET_STATISTICS_destroy(struct GNUNET_STATISTICS_Handle *h, int sync_first)
Destroy a handle (free all state associated with it).

References ats_ch, connections, destroy_paths_now(), destroy_tunnels_now(), GCD_shutdown(), GCH_shutdown(), GCP_destroy_all_peers(), GCP_iterate_all(), GNUNET_ATS_connectivity_done(), GNUNET_CONTAINER_multihashmap_destroy(), GNUNET_CONTAINER_multipeermap_destroy(), GNUNET_CONTAINER_multishortmap_destroy(), GNUNET_free, GNUNET_NO, GNUNET_STATISTICS_destroy(), loose_channels, my_private_key, open_ports, peers, and stats.

Referenced by client_disconnect_cb(), and shutdown_task().

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◆ shutdown_task()

static void shutdown_task ( void *  cls)
static

Task run during shutdown.

Parameters
clsunused

Definition at line 429 of file gnunet-service-cadet.c.

430 {
432  "Shutting down\n");
434  GCO_shutdown ();
435  if (NULL == clients_head)
436  shutdown_rest ();
437 }
int shutting_down
Signal that shutdown is happening: prevent recovery measures.
static void shutdown_rest()
Shutdown everything once the clients have disconnected.
static struct CadetClient * clients_head
DLL with all the clients, head.
void GCO_shutdown()
Shut down the CORE subsystem.
#define GNUNET_log(kind,...)

References clients_head, GCO_shutdown(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_YES, shutdown_rest(), and shutting_down.

Referenced by run().

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◆ bind_loose_channel()

static int bind_loose_channel ( void *  cls,
const struct GNUNET_HashCode port,
void *  value 
)
static

We had a remote connection value to port h_port before client cls opened port port.

Bind them now.

Parameters
clsthe struct CadetClient
portthe hashed port
valuethe struct CadetChannel
Returns
GNUNET_YES (iterate over all such channels)

Definition at line 450 of file gnunet-service-cadet.c.

453 {
454  struct OpenPort *op = cls;
455  struct CadetChannel *ch = value;
456 
457  GCCH_bind (ch,
458  op->c,
459  &op->port);
462  &op->h_port,
463  ch));
464  return GNUNET_YES;
465 }
static struct GNUNET_ARM_Operation * op
Current operation.
Definition: gnunet-arm.c:144
void GCCH_bind(struct CadetChannel *ch, struct CadetClient *c, const struct GNUNET_HashCode *port)
A client is bound to the port that we have a channel open to.
enum GNUNET_GenericReturnValue GNUNET_CONTAINER_multihashmap_remove(struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key, const void *value)
Remove the given key-value pair from the map.
Struct containing all information regarding a channel to a remote client.
Port opened by a client.

References ch, GCCH_bind(), GNUNET_assert, GNUNET_CONTAINER_multihashmap_remove(), GNUNET_YES, loose_channels, op, and value.

Referenced by handle_port_open().

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◆ handle_port_open()

static void handle_port_open ( void *  cls,
const struct GNUNET_CADET_PortMessage pmsg 
)
static

Handle port open request.

Creates a mapping from the port to the respective client and checks whether we have loose channels trying to bind to the port. If so, those are bound.

Parameters
clsIdentification of the client.
pmsgThe actual message.

Definition at line 478 of file gnunet-service-cadet.c.

480 {
481  struct CadetClient *c = cls;
482  struct OpenPort *op;
483 
485  "Open port %s requested by %s\n",
486  GNUNET_h2s (&pmsg->port),
487  GSC_2s (c));
488  if (NULL == c->ports)
490  GNUNET_NO);
491  op = GNUNET_new (struct OpenPort);
492  op->c = c;
493  op->port = pmsg->port;
494  GCCH_hash_port (&op->h_port,
495  &pmsg->port,
496  &my_full_id);
497  if (GNUNET_OK !=
499  &op->port,
500  op,
502  {
503  GNUNET_break (0);
505  return;
506  }
508  &op->h_port,
509  op,
512  &op->h_port,
514  op);
516 }
struct GNUNET_PeerIdentity my_full_id
Local peer own ID.
const char * GSC_2s(struct CadetClient *c)
Return identifier for a client as a string.
static int bind_loose_channel(void *cls, const struct GNUNET_HashCode *port, void *value)
We had a remote connection value to port h_port before client cls opened port port.
void GCCH_hash_port(struct GNUNET_HashCode *h_port, const struct GNUNET_HashCode *port, const struct GNUNET_PeerIdentity *listener)
Hash the port and initiator and listener to calculate the "challenge" h_port we send to the other pee...
enum GNUNET_GenericReturnValue GNUNET_CONTAINER_multihashmap_put(struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key, void *value, enum GNUNET_CONTAINER_MultiHashMapOption opt)
Store a key-value pair in the map.
struct GNUNET_CONTAINER_MultiHashMap * GNUNET_CONTAINER_multihashmap_create(unsigned int len, int do_not_copy_keys)
Create a multi hash map.
enum GNUNET_GenericReturnValue GNUNET_CONTAINER_multihashmap_get_multiple(struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key, GNUNET_CONTAINER_MultiHashMapIteratorCallback it, void *it_cls)
Iterate over all entries in the map that match a particular key.
@ GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE
Allow multiple values with the same key.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
void GNUNET_SERVICE_client_drop(struct GNUNET_SERVICE_Client *c)
Ask the server to disconnect from the given client.
Definition: service.c:2330
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2249
Struct containing information about a client of the service.
struct GNUNET_SERVICE_Client * client
Client handle.
struct GNUNET_CONTAINER_MultiHashMap * ports
Ports that this client has declared interest in.
struct GNUNET_HashCode port
Port to open/close.
Definition: cadet.h:193
struct CadetClient * c
Client that opened the port.

References bind_loose_channel(), OpenPort::c, CadetClient::client, GCCH_hash_port(), GNUNET_break, GNUNET_CONTAINER_multihashmap_create(), GNUNET_CONTAINER_multihashmap_get_multiple(), GNUNET_CONTAINER_multihashmap_put(), GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY, GNUNET_ERROR_TYPE_DEBUG, GNUNET_h2s(), GNUNET_new, GNUNET_NO, GNUNET_OK, GNUNET_SERVICE_client_continue(), GNUNET_SERVICE_client_drop(), GSC_2s(), LOG, loose_channels, my_full_id, op, open_ports, GNUNET_CADET_PortMessage::port, and CadetClient::ports.

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◆ handle_port_close()

static void handle_port_close ( void *  cls,
const struct GNUNET_CADET_PortMessage pmsg 
)
static

Handler for port close requests.

Marks this port as closed (unless of course we have another client with the same port open). Note that existing channels accepted on the port are not affected.

Parameters
clsIdentification of the client.
pmsgThe actual message.

Definition at line 529 of file gnunet-service-cadet.c.

531 {
532  struct CadetClient *c = cls;
533  struct OpenPort *op;
534 
536  "Closing port %s as requested by %s\n",
537  GNUNET_h2s (&pmsg->port),
538  GSC_2s (c));
539  if (NULL == c->ports)
540  {
541  /* Client closed a port despite _never_ having opened one? */
542  GNUNET_break (0);
544  return;
545  }
547  &pmsg->port);
548  if (NULL == op)
549  {
550  GNUNET_break (0);
552  return;
553  }
556  &op->port,
557  op));
560  &op->h_port,
561  op));
562  GNUNET_free (op);
564 }
void * GNUNET_CONTAINER_multihashmap_get(const struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key)
Given a key find a value in the map matching the key.

References OpenPort::c, CadetClient::client, GNUNET_assert, GNUNET_break, GNUNET_CONTAINER_multihashmap_get(), GNUNET_CONTAINER_multihashmap_remove(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_h2s(), GNUNET_SERVICE_client_continue(), GNUNET_SERVICE_client_drop(), GNUNET_YES, GSC_2s(), LOG, op, open_ports, GNUNET_CADET_PortMessage::port, and CadetClient::ports.

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◆ handle_channel_create()

static void handle_channel_create ( void *  cls,
const struct GNUNET_CADET_LocalChannelCreateMessage tcm 
)
static

Handler for requests for us creating a new channel to another peer and port.

Parameters
clsIdentification of the client.
tcmThe actual message.

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

576 {
577  struct CadetClient *c = cls;
578  struct CadetChannel *ch;
579 
581  {
582  /* Channel ID not in allowed range. */
583  LOG (GNUNET_ERROR_TYPE_DEBUG,"Channel ID not in allowed range.");
584  GNUNET_break (0);
586  return;
587  }
588  ch = lookup_channel (c,
589  tcm->ccn);
590  if (NULL != ch)
591  {
592  /* Channel ID already in use. Not allowed. */
593  LOG (GNUNET_ERROR_TYPE_DEBUG,"Channel ID already in use. Not allowed.");
594  GNUNET_break (0);
596  return;
597  }
599  "New channel to %s at port %s requested by %s\n",
600  GNUNET_i2s (&tcm->peer),
601  GNUNET_h2s (&tcm->port),
602  GSC_2s (c));
603 
604  /* Create channel */
606  tcm->ccn,
607  GCP_get (&tcm->peer,
608  GNUNET_YES),
609  &tcm->port,
610  ntohl (tcm->opt));
611  if (NULL == ch)
612  {
613  GNUNET_break (0);
615  return;
616  }
619  ntohl (
620  tcm->ccn.
621  channel_of_client),
622  ch,
624 
626 }
struct CadetChannel * GCCH_channel_local_new(struct CadetClient *owner, struct GNUNET_CADET_ClientChannelNumber ccn, struct CadetPeer *destination, const struct GNUNET_HashCode *port, uint32_t options)
Create a new channel.
struct CadetPeer * GCP_get(const struct GNUNET_PeerIdentity *peer_id, int create)
Retrieve the CadetPeer structure associated with the peer.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).

References GNUNET_CADET_LocalChannelCreateMessage::ccn, ch, GNUNET_CADET_ClientChannelNumber::channel_of_client, CadetClient::channels, CadetClient::client, GCCH_channel_local_new(), GCP_get(), GNUNET_assert, GNUNET_break, GNUNET_CADET_LOCAL_CHANNEL_ID_CLI, GNUNET_CONTAINER_multihashmap32_put(), GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY, GNUNET_ERROR_TYPE_DEBUG, GNUNET_h2s(), GNUNET_i2s(), GNUNET_SERVICE_client_continue(), GNUNET_SERVICE_client_drop(), GNUNET_YES, GSC_2s(), LOG, lookup_channel(), GNUNET_CADET_LocalChannelCreateMessage::opt, GNUNET_CADET_LocalChannelCreateMessage::peer, and GNUNET_CADET_LocalChannelCreateMessage::port.

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◆ handle_channel_destroy()

static void handle_channel_destroy ( void *  cls,
const struct GNUNET_CADET_LocalChannelDestroyMessage msg 
)
static

Handler for requests of destroying an existing channel.

Parameters
clsclient identification of the client
msgthe actual message

Definition at line 636 of file gnunet-service-cadet.c.

639 {
640  struct CadetClient *c = cls;
641  struct CadetChannel *ch;
642 
643  ch = lookup_channel (c,
644  msg->ccn);
645  if (NULL == ch)
646  {
647  /* Client attempted to destroy unknown channel.
648  Can happen if the other side went down at the same time.*/
650  "%s tried to destroy unknown channel %X\n",
651  GSC_2s (c),
652  (uint32_t) ntohl (msg->ccn.channel_of_client));
654  return;
655  }
657  "%s is destroying %s\n",
658  GSC_2s (c),
659  GCCH_2s (ch));
662  ntohl (
663  msg->ccn.
664  channel_of_client),
665  ch));
667  c,
668  msg->ccn);
670 }
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
void GCCH_channel_local_destroy(struct CadetChannel *ch, struct CadetClient *c, struct GNUNET_CADET_ClientChannelNumber ccn)
Destroy locally created channel.
enum GNUNET_GenericReturnValue GNUNET_CONTAINER_multihashmap32_remove(struct GNUNET_CONTAINER_MultiHashMap32 *map, uint32_t key, const void *value)
Remove the given key-value pair from the map.

References ch, CadetClient::channels, CadetClient::client, GCCH_2s(), GCCH_channel_local_destroy(), GNUNET_assert, GNUNET_CONTAINER_multihashmap32_remove(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_SERVICE_client_continue(), GNUNET_YES, GSC_2s(), LOG, lookup_channel(), and msg.

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◆ check_local_data()

static int check_local_data ( void *  cls,
const struct GNUNET_CADET_LocalData msg 
)
static

Check for client traffic data message is well-formed.

Parameters
clsidentification of the client
msgthe actual message
Returns
GNUNET_OK if msg is OK, GNUNET_SYSERR if not

Definition at line 681 of file gnunet-service-cadet.c.

683 {
684  size_t payload_size;
685  size_t payload_claimed_size;
686  const char *buf;
687  struct GNUNET_MessageHeader pa;
688 
689  /* FIXME: what is the format we shall allow for @a msg?
690  ONE payload item or multiple? Seems current cadet_api
691  at least in theory allows more than one. Next-gen
692  cadet_api will likely no more, so we could then
693  simplify this mess again. *//* Sanity check for message size */payload_size = ntohs (msg->header.size) - sizeof(*msg);
694  buf = (const char *) &msg[1];
695  while (payload_size >= sizeof(struct GNUNET_MessageHeader))
696  {
697  /* need to memcpy() for alignment */
698  GNUNET_memcpy (&pa,
699  buf,
700  sizeof(pa));
701  payload_claimed_size = ntohs (pa.size);
702  if ((payload_size < payload_claimed_size) ||
703  (payload_claimed_size < sizeof(struct GNUNET_MessageHeader)) ||
704  (GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE < payload_claimed_size))
705  {
706  GNUNET_break (0);
708  "Local data of %u total size had sub-message %u at %u with %u bytes\n",
709  ntohs (msg->header.size),
710  ntohs (pa.type),
711  (unsigned int) (buf - (const char *) &msg[1]),
712  (unsigned int) payload_claimed_size);
713  return GNUNET_SYSERR;
714  }
715  payload_size -= payload_claimed_size;
716  buf += payload_claimed_size;
717  }
718  if (0 != payload_size)
719  {
720  GNUNET_break_op (0);
721  return GNUNET_SYSERR;
722  }
723  return GNUNET_OK;
724 }
#define GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE
Maximum message size that can be sent on CADET.
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
@ GNUNET_SYSERR
#define GNUNET_break_op(cond)
Use this for assertion violations caused by other peers (i.e.
Header for all communications.
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format.

References buf, GNUNET_break, GNUNET_break_op, GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE, GNUNET_ERROR_TYPE_DEBUG, GNUNET_memcpy, GNUNET_OK, GNUNET_SYSERR, LOG, msg, GNUNET_MessageHeader::size, and GNUNET_MessageHeader::type.

◆ handle_local_data()

static void handle_local_data ( void *  cls,
const struct GNUNET_CADET_LocalData msg 
)
static

Handler for client payload traffic to be send on a channel to another peer.

Parameters
clsidentification of the client
msgthe actual message

Definition at line 735 of file gnunet-service-cadet.c.

737 {
738  struct CadetClient *c = cls;
739  struct CadetChannel *ch;
740  size_t payload_size;
741  const char *buf;
742 
743  ch = lookup_channel (c,
744  msg->ccn);
745  if (NULL == ch)
746  {
747  /* Channel does not exist (anymore) */
749  "Dropping payload for channel %u from client (channel unknown, other endpoint may have disconnected)\n",
750  (unsigned int) ntohl (msg->ccn.channel_of_client));
752  return;
753  }
754  payload_size = ntohs (msg->header.size) - sizeof(*msg);
756  "# payload received from clients",
757  payload_size,
758  GNUNET_NO);
759  buf = (const char *) &msg[1];
761  "Received %u bytes payload from %s for %s\n",
762  (unsigned int) payload_size,
763  GSC_2s (c),
764  GCCH_2s (ch));
765  if (GNUNET_OK !=
767  msg->ccn,
768  buf,
769  payload_size))
770  {
771  GNUNET_break (0);
773  return;
774  }
776 }
int GCCH_handle_local_data(struct CadetChannel *ch, struct GNUNET_CADET_ClientChannelNumber sender_ccn, const char *buf, size_t buf_len)
Handle data given by a client.
@ GNUNET_ERROR_TYPE_WARNING
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.

References buf, ch, CadetClient::client, GCCH_2s(), GCCH_handle_local_data(), GNUNET_break, GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_WARNING, GNUNET_NO, GNUNET_OK, GNUNET_SERVICE_client_continue(), GNUNET_SERVICE_client_drop(), GNUNET_STATISTICS_update(), GSC_2s(), LOG, lookup_channel(), msg, GNUNET_MessageHeader::size, and stats.

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◆ handle_local_ack()

static void handle_local_ack ( void *  cls,
const struct GNUNET_CADET_LocalAck msg 
)
static

Handler for client's ACKs for payload traffic.

Parameters
clsidentification of the client.
msgThe actual message.

Definition at line 786 of file gnunet-service-cadet.c.

788 {
789  struct CadetClient *c = cls;
790  struct CadetChannel *ch;
791 
792  ch = lookup_channel (c,
793  msg->ccn);
794  if (NULL == ch)
795  {
796  /* Channel does not exist (anymore) */
798  "Ignoring local ACK for channel %u from client (channel unknown, other endpoint may have disconnected)\n",
799  (unsigned int) ntohl (msg->ccn.channel_of_client));
801  return;
802  }
804  "Got a local ACK from %s for %s\n",
805  GSC_2s (c),
806  GCCH_2s (ch));
808  msg->ccn);
810 }
void GCCH_handle_local_ack(struct CadetChannel *ch, struct GNUNET_CADET_ClientChannelNumber client_ccn)
Handle ACK from client on local channel.

References ch, CadetClient::client, GCCH_2s(), GCCH_handle_local_ack(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_WARNING, GNUNET_SERVICE_client_continue(), GSC_2s(), LOG, lookup_channel(), and msg.

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◆ get_all_peers_iterator()

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

Iterator over all peers to send a monitoring client info about each peer.

Parameters
clsClosure ().
peerPeer ID (tunnel remote peer).
valuePeer info.
Returns
GNUNET_YES, to keep iterating.

Definition at line 822 of file gnunet-service-cadet.c.

825 {
826  struct CadetClient *c = cls;
827  struct CadetPeer *p = value;
828  struct GNUNET_MQ_Envelope *env;
830 
831  env = GNUNET_MQ_msg (msg,
833  msg->destination = *peer;
834  msg->paths = htons (GCP_count_paths (p));
835  msg->tunnel = htons (NULL != GCP_get_tunnel (p,
836  GNUNET_NO));
837  msg->best_path_length = htonl (0); // FIXME: get length of shortest known path!
838  GNUNET_MQ_send (c->mq,
839  env);
840  return GNUNET_YES;
841 }
unsigned int GCP_count_paths(const struct CadetPeer *cp)
Count the number of known paths toward the peer.
static struct GNUNET_OS_Process * p
Helper process we started.
Definition: gnunet-uri.c:38
#define GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_PEERS
Local information about all peers known to the service.
Message to inform the client about one of the peers in the service.
Definition: cadet.h:424
struct GNUNET_TESTBED_Peer * peer
The peer associated with this model.

References env, GCP_count_paths(), GCP_get_tunnel(), GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_PEERS, GNUNET_MQ_msg, GNUNET_MQ_send(), GNUNET_NO, GNUNET_YES, CadetClient::mq, msg, p, peer, and value.

Referenced by handle_get_peers().

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◆ handle_get_peers()

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

Handler for client's INFO PEERS request.

Parameters
clsIdentification of the client.
messageThe actual message.

Definition at line 851 of file gnunet-service-cadet.c.

853 {
854  struct CadetClient *c = cls;
855  struct GNUNET_MQ_Envelope *env;
856  struct GNUNET_MessageHeader *reply;
857 
859  c);
860  env = GNUNET_MQ_msg (reply,
862  GNUNET_MQ_send (c->mq,
863  env);
865 }
static int get_all_peers_iterator(void *cls, const struct GNUNET_PeerIdentity *peer, void *value)
Iterator over all peers to send a monitoring client info about each peer.
#define GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_PEERS_END
End of local information about all peers known to the service.

References CadetClient::client, env, GCP_iterate_all(), get_all_peers_iterator(), GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_PEERS_END, GNUNET_MQ_msg, GNUNET_MQ_send(), GNUNET_SERVICE_client_continue(), and CadetClient::mq.

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◆ path_info_iterator()

static int path_info_iterator ( void *  cls,
struct CadetPeerPath path,
unsigned int  off 
)
static

Iterator over all paths of a peer to build an InfoPeer message.

Message contains blocks of peers, first not included.

Parameters
clsmessage queue for transmission
pathPath itself
offoffset of the peer on path
Returns
GNUNET_YES if should keep iterating. GNUNET_NO otherwise.

Definition at line 879 of file gnunet-service-cadet.c.

882 {
883  struct GNUNET_MQ_Handle *mq = cls;
884  struct GNUNET_MQ_Envelope *env;
885  struct GNUNET_CADET_LocalInfoPath *resp;
886  struct GNUNET_PeerIdentity *id;
887  size_t path_size;
888  unsigned int path_length;
889 
890  path_length = GCPP_get_length (path);
891  path_size = sizeof(struct GNUNET_PeerIdentity) * path_length;
892  if (sizeof(*resp) + path_size > UINT16_MAX)
893  {
894  /* try just giving the relevant path */
895  path_length = GNUNET_MIN ((UINT16_MAX - sizeof(*resp)) / sizeof(struct
897  off);
898  path_size = sizeof(struct GNUNET_PeerIdentity) * path_length;
899  }
900  if (sizeof(*resp) + path_size > UINT16_MAX)
901  {
903  "Path of %u entries is too long for info message\n",
904  path_length);
905  return GNUNET_YES;
906  }
907  env = GNUNET_MQ_msg_extra (resp,
908  path_size,
910  id = (struct GNUNET_PeerIdentity *) &resp[1];
911 
912  /* Don't copy first peer. First peer is always the local one. Last
913  * peer is always the destination (leave as 0, EOL).
914  */
915  for (unsigned int i = 0; i < path_length; i++)
916  id[i] = *GCP_get_id (GCPP_get_peer_at_offset (path,
917  i));
918  resp->off = htonl (off);
920  env);
921  return GNUNET_YES;
922 }
struct GNUNET_MQ_Handle * mq
Definition: 003.c:5
static struct GNUNET_IDENTITY_Handle * id
Handle to identity service.
struct CadetPeer * GCPP_get_peer_at_offset(struct CadetPeerPath *path, unsigned int off)
Obtain the peer at offset off in path.
unsigned int GCPP_get_length(struct CadetPeerPath *path)
Return the length of the path.
#define GNUNET_MIN(a, b)
#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:63
#define GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_PATH
Local information of service about a specific path.
Message to inform the client about one of the paths known to the service.
Definition: cadet.h:407
uint32_t off
Offset of the peer that was requested.
Definition: cadet.h:416
Handle to a message queue.
Definition: mq.c:87
The identity of the host (wraps the signing key of the peer).

References env, GCP_get_id(), GCPP_get_length(), GCPP_get_peer_at_offset(), GNUNET_ERROR_TYPE_WARNING, GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_PATH, GNUNET_MIN, GNUNET_MQ_msg_extra, GNUNET_MQ_send(), GNUNET_YES, id, LOG, mq, and GNUNET_CADET_LocalInfoPath::off.

Referenced by handle_show_path().

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◆ handle_show_path()

static void handle_show_path ( void *  cls,
const struct GNUNET_CADET_RequestPathInfoMessage msg 
)
static

Handler for client's GNUNET_MESSAGE_TYPE_CADET_LOCAL_REQUEST_INFO_PATH request.

Parameters
clsIdentification of the client.
msgThe actual message.

Definition at line 932 of file gnunet-service-cadet.c.

934 {
935  struct CadetClient *c = cls;
936  struct CadetPeer *p;
937  struct GNUNET_MQ_Envelope *env;
938  struct GNUNET_MessageHeader *resp;
939 
940  p = GCP_get (&msg->peer,
941  GNUNET_NO);
942  if (NULL != p)
945  c->mq);
946  env = GNUNET_MQ_msg (resp,
948  GNUNET_MQ_send (c->mq,
949  env);
951 }
static int path_info_iterator(void *cls, struct CadetPeerPath *path, unsigned int off)
Iterator over all paths of a peer to build an InfoPeer message.
unsigned int GCP_iterate_indirect_paths(struct CadetPeer *cp, GCP_PathIterator callback, void *callback_cls)
Iterate over the paths to a peer without direct link.
#define GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_PATH_END
End of local information of service about a specific path.

References CadetClient::client, env, GCP_get(), GCP_iterate_indirect_paths(), GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_PATH_END, GNUNET_MQ_msg, GNUNET_MQ_send(), GNUNET_NO, GNUNET_SERVICE_client_continue(), CadetClient::mq, msg, p, and path_info_iterator().

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◆ get_all_tunnels_iterator()

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

Iterator over all tunnels to send a monitoring client info about each tunnel.

Parameters
clsClosure ().
peerPeer ID (tunnel remote peer).
valuea struct CadetPeer
Returns
GNUNET_YES, to keep iterating.

Definition at line 963 of file gnunet-service-cadet.c.

966 {
967  struct CadetClient *c = cls;
968  struct CadetPeer *p = value;
969  struct GNUNET_MQ_Envelope *env;
971  struct CadetTunnel *t;
972 
973  t = GCP_get_tunnel (p,
974  GNUNET_NO);
975  if (NULL == t)
976  return GNUNET_YES;
977  env = GNUNET_MQ_msg (msg,
979  msg->destination = *peer;
980  msg->channels = htonl (GCT_count_channels (t));
981  msg->connections = htonl (GCT_count_any_connections (t));
982  msg->cstate = htons (0);
983  msg->estate = htons ((uint16_t) GCT_get_estate (t));
984  GNUNET_MQ_send (c->mq,
985  env);
986  return GNUNET_YES;
987 }
unsigned int GCT_count_any_connections(const struct CadetTunnel *t)
Counts the number of connections created for a tunnel, including busy connections.
unsigned int GCT_count_channels(struct CadetTunnel *t)
Returns the number of channels using a tunnel.
enum CadetTunnelEState GCT_get_estate(struct CadetTunnel *t)
Get the encryption state of a tunnel.
#define GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_TUNNELS
Local information about all tunnels of service.
Message to inform the client about one of the tunnels in the service.
Definition: cadet.h:458

References env, GCP_get_tunnel(), GCT_count_any_connections(), GCT_count_channels(), GCT_get_estate(), GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_TUNNELS, GNUNET_MQ_msg, GNUNET_MQ_send(), GNUNET_NO, GNUNET_YES, CadetClient::mq, msg, p, peer, t, and value.

Referenced by handle_info_tunnels().

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◆ handle_info_tunnels()

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

Handler for client's GNUNET_MESSAGE_TYPE_CADET_LOCAL_REQUEST_INFO_TUNNELS request.

Parameters
clsclient Identification of the client.
messageThe actual message.

Definition at line 997 of file gnunet-service-cadet.c.

999 {
1000  struct CadetClient *c = cls;
1001  struct GNUNET_MQ_Envelope *env;
1002  struct GNUNET_MessageHeader *reply;
1003 
1005  c);
1006  env = GNUNET_MQ_msg (reply,
1008  GNUNET_MQ_send (c->mq,
1009  env);
1011 }
static int get_all_tunnels_iterator(void *cls, const struct GNUNET_PeerIdentity *peer, void *value)
Iterator over all tunnels to send a monitoring client info about each tunnel.
#define GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_TUNNELS_END
End of local information about all tunnels of service.

References CadetClient::client, env, GCP_iterate_all(), get_all_tunnels_iterator(), GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_TUNNELS_END, GNUNET_MQ_msg, GNUNET_MQ_send(), GNUNET_SERVICE_client_continue(), and CadetClient::mq.

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◆ handle_drop_message()

static void handle_drop_message ( void *  cls,
const struct GNUNET_CADET_RequestDropCadetMessage message 
)
static

Handler for client's GNUNET_MESSAGE_TYPE_CADET_DROP_CADET_MESSAGE request.

Parameters
clsclient Identification of the client.
messageThe actual message.

Definition at line 1021 of file gnunet-service-cadet.c.

1023 {
1024  struct CadetClient *c = cls;
1025  struct CadetChannel *ch;
1026 
1027  ch = lookup_channel (c,
1028  message->ccn);
1029 
1030  if (NULL != ch)
1031  GCCH_assign_type_to_drop (ch, message);
1032 
1034 }
void GCCH_assign_type_to_drop(struct CadetChannel *ch, const struct GNUNET_CADET_RequestDropCadetMessage *message)
Assign type of message to drop.
struct GNUNET_CADET_ClientChannelNumber ccn
ID of the channel we want to drop a message for.
Definition: cadet.h:336

References GNUNET_CADET_RequestDropCadetMessage::ccn, ch, CadetClient::client, GCCH_assign_type_to_drop(), GNUNET_SERVICE_client_continue(), and lookup_channel().

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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

Callback called when a client connects to the service.

Parameters
clsclosure for the service
clientthe new client that connected to the service
mqthe message queue used to send messages to the client
Returns
c

Definition at line 1046 of file gnunet-service-cadet.c.

1049 {
1050  struct CadetClient *c;
1051 
1052  c = GNUNET_new (struct CadetClient);
1053  c->client = client;
1054  c->mq = mq;
1055  c->id = next_client_id++; /* overflow not important: just for debug */
1056  c->channels
1059  clients_tail,
1060  c);
1062  "# clients",
1063  +1,
1064  GNUNET_NO);
1066  "%s connected\n",
1067  GSC_2s (c));
1068  return c;
1069 }
static struct CadetClient * clients_tail
DLL with all the clients, tail.
static unsigned int next_client_id
Next ID to assign to a client.
#define GNUNET_CONTAINER_DLL_insert(head, tail, element)
Insert an element at the head of a DLL.
struct GNUNET_CONTAINER_MultiHashMap32 * GNUNET_CONTAINER_multihashmap32_create(unsigned int len)
Create a 32-bit key multi hash map.

References CadetClient::channels, CadetClient::client, clients_head, clients_tail, GNUNET_CONTAINER_DLL_insert, GNUNET_CONTAINER_multihashmap32_create(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_new, GNUNET_NO, GNUNET_STATISTICS_update(), GSC_2s(), CadetClient::id, LOG, mq, CadetClient::mq, next_client_id, and stats.

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◆ GSC_handle_remote_channel_destroy()

void GSC_handle_remote_channel_destroy ( struct CadetClient c,
struct GNUNET_CADET_ClientChannelNumber  ccn,
struct CadetChannel ch 
)

A channel was destroyed by the other peer.

Tell our client.

Parameters
cclient that lost a channel
ccnchannel identification number for the client
chthe channel object

Definition at line 1080 of file gnunet-service-cadet.c.

1083 {
1084  struct GNUNET_MQ_Envelope *env;
1086 
1087  env = GNUNET_MQ_msg (tdm,
1089  tdm->ccn = ccn;
1090  GSC_send_to_client (c,
1091  env);
1094  ntohl (
1096  ch));
1097 }
#define GNUNET_MESSAGE_TYPE_CADET_LOCAL_CHANNEL_DESTROY
Tell client that a channel was destroyed.
Message for or to a client to destroy tunnel.
Definition: cadet.h:235
struct GNUNET_CADET_ClientChannelNumber ccn
ID of a channel controlled by this client.
Definition: cadet.h:244

References GNUNET_CADET_LocalChannelDestroyMessage::ccn, ch, GNUNET_CADET_ClientChannelNumber::channel_of_client, CadetClient::channels, env, GNUNET_assert, GNUNET_CONTAINER_multihashmap32_remove(), GNUNET_MESSAGE_TYPE_CADET_LOCAL_CHANNEL_DESTROY, GNUNET_MQ_msg, GNUNET_YES, and GSC_send_to_client().

Referenced by GCCH_handle_remote_destroy(), and signal_remote_destroy_cb().

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◆ GSC_drop_loose_channel()

void GSC_drop_loose_channel ( const struct GNUNET_HashCode h_port,
struct CadetChannel ch 
)

A client that created a loose channel that was not bound to a port disconnected, drop it from the loose_channels list.

Parameters
h_portthe hashed port the channel was trying to bind to
chthe channel that was lost

Definition at line 1101 of file gnunet-service-cadet.c.

1103 {
1106  h_port,
1107  ch));
1108 }

References ch, GNUNET_assert, GNUNET_CONTAINER_multihashmap_remove(), GNUNET_YES, and loose_channels.

Referenced by channel_destroy().

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◆ channel_destroy_iterator()

static int channel_destroy_iterator ( void *  cls,
uint32_t  key,
void *  value 
)
static

Iterator for deleting each channel whose client endpoint disconnected.

Parameters
clsClosure (client that has disconnected).
keyThe local channel id in host byte order
valueThe value stored at the key (channel to destroy).
Returns
GNUNET_OK, keep iterating.

Definition at line 1120 of file gnunet-service-cadet.c.

1123 {
1124  struct CadetClient *c = cls;
1126  struct CadetChannel *ch = value;
1127 
1129  "Destroying %s, due to %s disconnecting.\n",
1130  GCCH_2s (ch),
1131  GSC_2s (c));
1132  ccn.channel_of_client = htonl (key);
1135  key,
1136  ch));
1138  c,
1139  ccn);
1140  return GNUNET_OK;
1141 }
struct GNUNET_HashCode key
The key used in the DHT.

References ch, GNUNET_CADET_ClientChannelNumber::channel_of_client, CadetClient::channels, GCCH_2s(), GCCH_channel_local_destroy(), GNUNET_assert, GNUNET_CONTAINER_multihashmap32_remove(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_OK, GNUNET_YES, GSC_2s(), key, LOG, and value.

Referenced by client_disconnect_cb().

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◆ client_release_ports()

static int client_release_ports ( void *  cls,
const struct GNUNET_HashCode port,
void *  value 
)
static

Remove client's ports from the global hashmap on disconnect.

Parameters
clsthe struct CadetClient
portthe port.
valuethe struct OpenPort to remove
Returns
GNUNET_OK, keep iterating.

Definition at line 1153 of file gnunet-service-cadet.c.

1156 {
1157  struct CadetClient *c = cls;
1158  struct OpenPort *op = value;
1159 
1160  GNUNET_assert (c == op->c);
1162  "Closing port %s due to %s disconnect.\n",
1163  GNUNET_h2s (port),
1164  GSC_2s (c));
1167  &op->h_port,
1168  op));
1171  port,
1172  op));
1173  GNUNET_free (op);
1174  return GNUNET_OK;
1175 }

References OpenPort::c, GNUNET_assert, GNUNET_CONTAINER_multihashmap_remove(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_h2s(), GNUNET_OK, GNUNET_YES, GSC_2s(), LOG, op, open_ports, port, CadetClient::ports, and value.

Referenced by client_disconnect_cb().

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◆ client_disconnect_cb()

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

Callback called when a client disconnected from the service.

Parameters
clsclosure for the service
clientthe client that disconnected
internal_clsshould be equal to c

Definition at line 1186 of file gnunet-service-cadet.c.

1189 {
1190  struct CadetClient *c = internal_cls;
1191 
1192  GNUNET_assert (c->client == client);
1194  "%s is disconnecting.\n",
1195  GSC_2s (c));
1196  if (NULL != c->channels)
1197  {
1200  c);
1203  }
1204  if (NULL != c->ports)
1205  {
1208  c);
1210  }
1212  clients_tail,
1213  c);
1215  "# clients",
1216  -1,
1217  GNUNET_NO);
1218  GNUNET_free (c);
1219  if ((NULL == clients_head) &&
1221  shutdown_rest ();
1222 }
static int channel_destroy_iterator(void *cls, uint32_t key, void *value)
Iterator for deleting each channel whose client endpoint disconnected.
static int client_release_ports(void *cls, const struct GNUNET_HashCode *port, void *value)
Remove client's ports from the global hashmap on disconnect.
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
unsigned int GNUNET_CONTAINER_multihashmap32_size(const struct GNUNET_CONTAINER_MultiHashMap32 *map)
Get the number of key-value pairs in the map.
enum GNUNET_GenericReturnValue GNUNET_CONTAINER_multihashmap_iterate(struct GNUNET_CONTAINER_MultiHashMap *map, GNUNET_CONTAINER_MultiHashMapIteratorCallback it, void *it_cls)
Iterate over all entries in the map.
void GNUNET_CONTAINER_multihashmap32_destroy(struct GNUNET_CONTAINER_MultiHashMap32 *map)
Destroy a 32-bit key hash map.
int GNUNET_CONTAINER_multihashmap32_iterate(struct GNUNET_CONTAINER_MultiHashMap32 *map, GNUNET_CONTAINER_MultiHashMapIterator32Callback it, void *it_cls)
Iterate over all entries in the map.

References channel_destroy_iterator(), CadetClient::channels, CadetClient::client, client_release_ports(), clients_head, clients_tail, GNUNET_assert, GNUNET_CONTAINER_DLL_remove, GNUNET_CONTAINER_multihashmap32_destroy(), GNUNET_CONTAINER_multihashmap32_iterate(), GNUNET_CONTAINER_multihashmap32_size(), GNUNET_CONTAINER_multihashmap_destroy(), GNUNET_CONTAINER_multihashmap_iterate(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_NO, GNUNET_STATISTICS_update(), GNUNET_YES, GSC_2s(), LOG, CadetClient::ports, shutdown_rest(), shutting_down, and stats.

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◆ run()

static void run ( void *  cls,
const struct GNUNET_CONFIGURATION_Handle c,
struct GNUNET_SERVICE_Handle service 
)
static

Setup CADET internals.

Parameters
clsclosure
cconfiguration to use

Definition at line 1232 of file gnunet-service-cadet.c.

1235 {
1236  cfg = c;
1237  if (GNUNET_OK !=
1239  "CADET",
1240  "RATCHET_MESSAGES",
1241  &ratchet_messages))
1242  {
1244  "CADET",
1245  "RATCHET_MESSAGES",
1246  "needs to be a number");
1247  ratchet_messages = 64;
1248  }
1249  if (GNUNET_OK !=
1251  "CADET",
1252  "RATCHET_TIME",
1253  &ratchet_time))
1254  {
1256  "CADET",
1257  "RATCHET_TIME",
1258  "need delay value");
1260  }
1261  if (GNUNET_OK !=
1263  "CADET",
1264  "REFRESH_CONNECTION_TIME",
1265  &keepalive_period))
1266  {
1268  "CADET",
1269  "REFRESH_CONNECTION_TIME",
1270  "need delay value");
1272  }
1273  if (GNUNET_OK !=
1275  "CADET",
1276  "DROP_PERCENT",
1277  &drop_percent))
1278  {
1279  drop_percent = 0;
1280  }
1281  else
1282  {
1283  LOG (GNUNET_ERROR_TYPE_WARNING, "**************************************\n");
1284  LOG (GNUNET_ERROR_TYPE_WARNING, "Cadet is running with DROP enabled.\n");
1285  LOG (GNUNET_ERROR_TYPE_WARNING, "This is NOT a good idea!\n");
1286  LOG (GNUNET_ERROR_TYPE_WARNING, "Remove DROP_PERCENT from config file.\n");
1287  LOG (GNUNET_ERROR_TYPE_WARNING, "**************************************\n");
1288  }
1290  if (NULL == my_private_key)
1291  {
1292  GNUNET_break (0);
1294  return;
1295  }
1298  stats = GNUNET_STATISTICS_create ("cadet",
1299  c);
1301  NULL);
1303  /* FIXME: optimize code to allow GNUNET_YES here! */
1305  GNUNET_NO);
1307  GNUNET_NO);
1309  GNUNET_YES);
1311  GNUNET_YES);
1312  GCH_init (c);
1313  GCD_init (c);
1314  GCO_init (c);
1316  "CADET started for peer %s\n",
1317  GNUNET_i2s (&my_full_id));
1318 }
unsigned long long drop_percent
Set to non-zero values to create random drops to test retransmissions.
const struct GNUNET_CONFIGURATION_Handle * cfg
Handle to our configuration.
struct GNUNET_TIME_Relative keepalive_period
How frequently do we send KEEPALIVE messages on idle connections?
static void shutdown_task(void *cls)
Task run during shutdown.
unsigned long long ratchet_messages
How many messages are needed to trigger an AXOLOTL ratchet advance.
struct GNUNET_TIME_Relative ratchet_time
How long until we trigger a ratched advance due to time.
void GCO_init(const struct GNUNET_CONFIGURATION_Handle *c)
Initialize the CORE subsystem.
void GCD_init(const struct GNUNET_CONFIGURATION_Handle *c)
Initialize the DHT subsystem.
void GCH_init(const struct GNUNET_CONFIGURATION_Handle *c)
Initialize the hello subsystem.
struct GNUNET_ATS_ConnectivityHandle * GNUNET_ATS_connectivity_init(const struct GNUNET_CONFIGURATION_Handle *cfg)
Initialize the ATS connectivity suggestion client handle.
enum GNUNET_GenericReturnValue GNUNET_CONFIGURATION_get_value_number(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, unsigned long long *number)
Get a configuration value that should be a number.
enum GNUNET_GenericReturnValue GNUNET_CONFIGURATION_get_value_time(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, struct GNUNET_TIME_Relative *time)
Get a configuration value that should be a relative time.
struct GNUNET_CRYPTO_EddsaPrivateKey * GNUNET_CRYPTO_eddsa_key_create_from_configuration(const struct GNUNET_CONFIGURATION_Handle *cfg)
Create a new private key by reading our peer's key from the file specified in the configuration.
void GNUNET_CRYPTO_eddsa_key_get_public(const struct GNUNET_CRYPTO_EddsaPrivateKey *priv, struct GNUNET_CRYPTO_EddsaPublicKey *pub)
Extract the public key for the given private key.
Definition: crypto_ecc.c:198
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).
struct GNUNET_CONTAINER_MultiShortmap * GNUNET_CONTAINER_multishortmap_create(unsigned int len, int do_not_copy_keys)
Create a multi peer map (hash map for public keys of peers).
void GNUNET_log_config_invalid(enum GNUNET_ErrorType kind, const char *section, const char *option, const char *required)
Log error message about invalid configuration option value.
@ GNUNET_ERROR_TYPE_INFO
void GNUNET_SCHEDULER_shutdown(void)
Request the shutdown of a scheduler.
Definition: scheduler.c:562
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_shutdown(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run on shutdown, that is when a CTRL-C signal is received,...
Definition: scheduler.c:1334
struct GNUNET_STATISTICS_Handle * GNUNET_STATISTICS_create(const char *subsystem, const struct GNUNET_CONFIGURATION_Handle *cfg)
Get handle for the statistics service.
#define GNUNET_TIME_UNIT_HOURS
One hour.
#define GNUNET_TIME_UNIT_MINUTES
One minute.
struct GNUNET_CRYPTO_EddsaPublicKey public_key

References ats_ch, cfg, connections, drop_percent, GCD_init(), GCH_init(), GCO_init(), GNUNET_ATS_connectivity_init(), GNUNET_break, GNUNET_CONFIGURATION_get_value_number(), GNUNET_CONFIGURATION_get_value_time(), GNUNET_CONTAINER_multihashmap_create(), GNUNET_CONTAINER_multipeermap_create(), GNUNET_CONTAINER_multishortmap_create(), GNUNET_CRYPTO_eddsa_key_create_from_configuration(), GNUNET_CRYPTO_eddsa_key_get_public(), GNUNET_ERROR_TYPE_INFO, GNUNET_ERROR_TYPE_WARNING, GNUNET_i2s(), GNUNET_log, GNUNET_log_config_invalid(), GNUNET_NO, GNUNET_OK, GNUNET_SCHEDULER_add_shutdown(), GNUNET_SCHEDULER_shutdown(), GNUNET_STATISTICS_create(), GNUNET_TIME_UNIT_HOURS, GNUNET_TIME_UNIT_MINUTES, GNUNET_YES, keepalive_period, LOG, loose_channels, my_full_id, my_private_key, open_ports, peers, GNUNET_PeerIdentity::public_key, ratchet_messages, ratchet_time, shutdown_task(), and stats.

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◆ GNUNET_SERVICE_MAIN()

Define "main" method using service macro.

Variable Documentation

◆ cfg

const struct GNUNET_CONFIGURATION_Handle* cfg

Handle to our configuration.

Definition at line 111 of file gnunet-service-cadet.c.

Referenced by run().

◆ stats

◆ ats_ch

Handle to communicate with ATS.

Definition at line 121 of file gnunet-service-cadet.c.

Referenced by run(), and shutdown_rest().

◆ my_full_id

◆ my_private_key

struct GNUNET_CRYPTO_EddsaPrivateKey* my_private_key

Own private key.

Definition at line 131 of file gnunet-service-cadet.c.

Referenced by GCT_add_channel(), run(), send_kx(), send_kx_auth(), set_monotime_sig(), shutdown_rest(), and update_ax_by_kx().

◆ shutting_down

int shutting_down

Signal that shutdown is happening: prevent recovery measures.

Definition at line 136 of file gnunet-service-cadet.c.

Referenced by client_disconnect_cb(), GCT_destroy_tunnel_now(), and shutdown_task().

◆ clients_head

struct CadetClient* clients_head
static

DLL with all the clients, head.

Definition at line 141 of file gnunet-service-cadet.c.

Referenced by client_connect_cb(), client_disconnect_cb(), and shutdown_task().

◆ clients_tail

struct CadetClient* clients_tail
static

DLL with all the clients, tail.

Definition at line 146 of file gnunet-service-cadet.c.

Referenced by client_connect_cb(), and client_disconnect_cb().

◆ next_client_id

unsigned int next_client_id
static

Next ID to assign to a client.

Definition at line 151 of file gnunet-service-cadet.c.

Referenced by client_connect_cb().

◆ open_ports

struct GNUNET_CONTAINER_MultiHashMap* open_ports

All ports clients of this peer have opened.

Maps from a hashed port to a struct OpenPort.

Definition at line 157 of file gnunet-service-cadet.c.

Referenced by client_release_ports(), GCCH_channel_incoming_new(), GCCH_channel_local_new(), handle_port_close(), handle_port_open(), run(), and shutdown_rest().

◆ loose_channels

struct GNUNET_CONTAINER_MultiHashMap* loose_channels

Map from ports to channels where the ports were closed at the time we got the inbound connection.

Indexed by h_port, contains struct CadetChannel.

Definition at line 164 of file gnunet-service-cadet.c.

Referenced by bind_loose_channel(), GCCH_channel_incoming_new(), GCCH_channel_local_new(), GSC_drop_loose_channel(), handle_port_open(), run(), and shutdown_rest().

◆ peers

Map from PIDs to struct CadetPeer entries.

Definition at line 169 of file gnunet-service-cadet.c.

Referenced by run(), and shutdown_rest().

◆ connections

struct GNUNET_CONTAINER_MultiShortmap* connections

◆ ratchet_messages

unsigned long long ratchet_messages

How many messages are needed to trigger an AXOLOTL ratchet advance.

Definition at line 180 of file gnunet-service-cadet.c.

Referenced by run().

◆ ratchet_time

struct GNUNET_TIME_Relative ratchet_time

How long until we trigger a ratched advance due to time.

Definition at line 180 of file gnunet-service-cadet.c.

Referenced by run(), t_ax_encrypt(), and update_ax_by_kx().

◆ keepalive_period

struct GNUNET_TIME_Relative keepalive_period

How frequently do we send KEEPALIVE messages on idle connections?

Definition at line 180 of file gnunet-service-cadet.c.

Referenced by GCC_handle_connection_create_ack(), handle_connection_create(), keepalive_done(), manage_first_hop_mq(), run(), send_create_ack(), send_keepalive(), and timeout_cb().

◆ drop_percent

unsigned long long drop_percent

Set to non-zero values to create random drops to test retransmissions.

Definition at line 195 of file gnunet-service-cadet.c.

Referenced by get_channel_weight(), run(), and should_I_drop().