GNUnet 0.21.1
gnunet-service-dht.c File Reference

GNUnet DHT service. More...

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

Go to the source code of this file.

Data Structures

struct  GDS_Underlay
 Information we keep per underlay. More...
 
struct  MyAddress
 An address of this peer. More...
 

Macros

#define HELLO_FREQUENCY   GNUNET_TIME_UNIT_HOURS
 How often do we broadcast our HELLO to neighbours if nothing special happens? More...
 

Functions

static void update_network_size_estimate (void *cls, struct GNUNET_TIME_Absolute timestamp, double logestimate, double std_dev)
 Callback that is called when network size estimate is updated. More...
 
double GDS_NSE_get (void)
 Return the current NSE. More...
 
static void broadcast_hello (void *cls)
 Task run periodically to broadcast our HELLO. More...
 
static void u_address_add (void *cls, const char *address, struct GNUNET_DHTU_Source *source, void **ctx)
 Function to call with new addresses of this peer. More...
 
static void u_address_del (void *ctx)
 Function to call with expired addresses of this peer. More...
 
void GDS_u_try_connect (const struct GNUNET_PeerIdentity *pid, const char *address)
 Ask all underlays to connect to peer pid at address. More...
 
void GDS_u_send (struct GDS_Underlay *u, struct GNUNET_DHTU_Target *target, const void *msg, size_t msg_size, GNUNET_SCHEDULER_TaskCallback finished_cb, void *finished_cb_cls)
 Send message to some other participant over the network. More...
 
void GDS_u_drop (struct GDS_Underlay *u, struct GNUNET_DHTU_PreferenceHandle *ph)
 Drop a hold ph from underlay u. More...
 
struct GNUNET_DHTU_PreferenceHandleGDS_u_hold (struct GDS_Underlay *u, struct GNUNET_DHTU_Target *target)
 Create a hold on target at underlay u. More...
 
static void shutdown_task (void *cls)
 Task run during shutdown. More...
 
static void load_underlay (void *cls, const char *section)
 Function iterating over all configuration sections. More...
 
static void run (void *cls, const struct GNUNET_CONFIGURATION_Handle *c, struct GNUNET_SERVICE_Handle *service)
 Process dht requests. More...
 
 GNUNET_SERVICE_MAIN ("dht", GNUNET_SERVICE_OPTION_NONE, &run, &client_connect_cb, &client_disconnect_cb, NULL, GNUNET_MQ_hd_var_size(dht_local_put, GNUNET_MESSAGE_TYPE_DHT_CLIENT_PUT, struct GNUNET_DHT_ClientPutMessage, NULL), GNUNET_MQ_hd_var_size(dht_local_get, GNUNET_MESSAGE_TYPE_DHT_CLIENT_GET, struct GNUNET_DHT_ClientGetMessage, NULL), GNUNET_MQ_hd_fixed_size(dht_local_get_stop, GNUNET_MESSAGE_TYPE_DHT_CLIENT_GET_STOP, struct GNUNET_DHT_ClientGetStopMessage, NULL), GNUNET_MQ_hd_fixed_size(dht_local_monitor, GNUNET_MESSAGE_TYPE_DHT_MONITOR_START, struct GNUNET_DHT_MonitorStartStopMessage, NULL), GNUNET_MQ_hd_fixed_size(dht_local_monitor_stop, GNUNET_MESSAGE_TYPE_DHT_MONITOR_STOP, struct GNUNET_DHT_MonitorStartStopMessage, NULL), GNUNET_MQ_hd_var_size(dht_local_get_result_seen, GNUNET_MESSAGE_TYPE_DHT_CLIENT_GET_RESULTS_KNOWN, struct GNUNET_DHT_ClientGetResultSeenMessage, NULL), GNUNET_MQ_hd_fixed_size(dht_local_hello_get, GNUNET_MESSAGE_TYPE_DHT_CLIENT_HELLO_GET, struct GNUNET_MessageHeader, NULL), GNUNET_MQ_hd_var_size(dht_local_hello_offer, GNUNET_MESSAGE_TYPE_DHT_CLIENT_HELLO_URL, struct GNUNET_MessageHeader, NULL), GNUNET_MQ_handler_end())
 

Variables

struct GNUNET_HELLO_BuilderGDS_my_hello
 Our HELLO. More...
 
struct GNUNET_PeerIdentity GDS_my_identity
 Identity of this peer. More...
 
struct GNUNET_HashCode GDS_my_identity_hash
 Hash of the identity of this peer. More...
 
struct GNUNET_CRYPTO_EddsaPrivateKey GDS_my_private_key
 Our private key. More...
 
static struct GNUNET_SCHEDULER_Taskhello_task
 Task broadcasting our HELLO. More...
 
static struct GDS_Underlayu_head
 Handles for the DHT underlays. More...
 
static struct GDS_Underlayu_tail
 Handles for the DHT underlays. More...
 
static struct MyAddressa_head
 Head of addresses of this peer. More...
 
static struct MyAddressa_tail
 Tail of addresses of this peer. More...
 
static double log_of_network_size_estimate
 log of the current network size estimate, used as the point where we switch between random and deterministic routing. More...
 

Detailed Description

GNUnet DHT service.

Author
Christian Grothoff
Nathan Evans

Definition in file gnunet-service-dht.c.

Macro Definition Documentation

◆ HELLO_FREQUENCY

#define HELLO_FREQUENCY   GNUNET_TIME_UNIT_HOURS

How often do we broadcast our HELLO to neighbours if nothing special happens?

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

Function Documentation

◆ update_network_size_estimate()

static void update_network_size_estimate ( void *  cls,
struct GNUNET_TIME_Absolute  timestamp,
double  logestimate,
double  std_dev 
)
static

Callback that is called when network size estimate is updated.

Parameters
clsa struct GDS_Underlay
timestamptime when the estimate was received from the server (or created by the server)
logestimatethe log(Base 2) value of the current network size estimate
std_devstandard deviation for the estimate

Definition at line 184 of file gnunet-service-dht.c.

188{
189 struct GDS_Underlay *u = cls;
190 double sum = 0.0;
191
193 "# Network size estimates received",
194 1,
195 GNUNET_NO);
196 /* do not allow estimates < 0.5 */
197 u->network_size_estimate = pow (2.0,
198 GNUNET_MAX (0.5,
199 logestimate));
200 for (struct GDS_Underlay *p = u_head; NULL != p; p = p->next)
201 sum += p->network_size_estimate;
202 if (sum <= 2.0)
204 else
206}
static mp_limb_t u[(((256)+GMP_NUMB_BITS - 1)/GMP_NUMB_BITS)]
static struct GDS_Underlay * u_head
Handles for the DHT underlays.
static double log_of_network_size_estimate
log of the current network size estimate, used as the point where we switch between random and determ...
struct GNUNET_STATISTICS_Handle * GDS_stats
Handle for the statistics service.
static struct GNUNET_OS_Process * p
Helper process we started.
Definition: gnunet-uri.c:38
#define GNUNET_MAX(a, b)
@ GNUNET_NO
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
Information we keep per underlay.

References GDS_stats, GNUNET_MAX, GNUNET_NO, GNUNET_STATISTICS_update(), log_of_network_size_estimate, p, consensus-simulation::sum, u, and u_head.

Referenced by load_underlay().

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◆ GDS_NSE_get()

double GDS_NSE_get ( void  )

Return the current NSE.

Returns
the current NSE as a logarithm

Definition at line 215 of file gnunet-service-dht.c.

216{
218}

References log_of_network_size_estimate.

Referenced by get_forward_count(), handle_find_local_hello(), and select_peer().

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◆ broadcast_hello()

static void broadcast_hello ( void *  cls)
static

Task run periodically to broadcast our HELLO.

Parameters
clsNULL

Definition at line 230 of file gnunet-service-dht.c.

231{
232 struct GNUNET_MessageHeader *hello;
233
234 (void) cls;
235 /* TODO: randomize! */
238 NULL);
242 if (NULL == hello)
243 {
244 GNUNET_break (0);
245 return;
246 }
248 GNUNET_free (hello);
249}
struct GNUNET_CRYPTO_EddsaPrivateKey GDS_my_private_key
Our private key.
#define HELLO_FREQUENCY
How often do we broadcast our HELLO to neighbours if nothing special happens?
static struct GNUNET_SCHEDULER_Task * hello_task
Task broadcasting our HELLO.
struct GNUNET_HELLO_Builder * GDS_my_hello
Our HELLO.
static void broadcast_hello(void *cls)
Task run periodically to broadcast our HELLO.
void GDS_NEIGHBOURS_broadcast(const struct GNUNET_MessageHeader *msg)
Send msg to all peers in our buckets.
struct GNUNET_MessageHeader * GNUNET_HELLO_builder_to_dht_hello_msg(const struct GNUNET_HELLO_Builder *builder, const struct GNUNET_CRYPTO_EddsaPrivateKey *priv, struct GNUNET_TIME_Relative expiration_time)
Generate DHT HELLO message (without peer ID) from a builder.
Definition: hello-uri.c:666
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur.
#define GNUNET_free(ptr)
Wrapper around free.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed(struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1278
#define GNUNET_TIME_UNIT_ZERO
Relative time zero.
Header for all communications.

References broadcast_hello(), GDS_my_hello, GDS_my_private_key, GDS_NEIGHBOURS_broadcast(), GNUNET_break, GNUNET_free, GNUNET_HELLO_builder_to_dht_hello_msg(), GNUNET_SCHEDULER_add_delayed(), GNUNET_TIME_UNIT_ZERO, HELLO_FREQUENCY, and hello_task.

Referenced by broadcast_hello(), u_address_add(), and u_address_del().

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◆ u_address_add()

static void u_address_add ( void *  cls,
const char *  address,
struct GNUNET_DHTU_Source source,
void **  ctx 
)
static

Function to call with new addresses of this peer.

Parameters
clsthe closure
addressaddress under which we are likely reachable, pointer will remain valid until address_del_cb is called; to be used for HELLOs. Example: "ip+udp://$PID/1.1.1.1:2086/"
sourcehandle for sending from this address, NULL if we can only receive
[out]ctxstorage space for DHT to use in association with this address

Definition at line 262 of file gnunet-service-dht.c.

266{
267 struct GDS_Underlay *u = cls;
268 struct MyAddress *a;
269 enum GNUNET_GenericReturnValue add_success;
270
272 "Underlay adds address %s for this peer\n",
273 address);
274 if (GNUNET_OK != (add_success = GNUNET_HELLO_builder_add_address (
276 address)))
277 {
279 "Adding address `%s' from underlay %s\n",
280 address,
281 GNUNET_NO == add_success ? "not done" : "failed");
282 return;
283 }
284 a = GNUNET_new (struct MyAddress);
285 a->source = source;
287 a->u = u;
289 a_tail,
290 a);
291 *ctx = a;
292
293 if (NULL != hello_task)
296 NULL);
297}
static char * address
GNS address for this phone.
static struct GNUNET_FS_Handle * ctx
static GstElement * source
Appsrc instance into which we write data for the pipeline.
static struct MyAddress * a_head
Head of addresses of this peer.
static struct MyAddress * a_tail
Tail of addresses of this peer.
#define GNUNET_CONTAINER_DLL_insert(head, tail, element)
Insert an element at the head of a DLL.
enum GNUNET_GenericReturnValue GNUNET_HELLO_builder_add_address(struct GNUNET_HELLO_Builder *builder, const char *address)
Add individual address to the builder.
Definition: hello-uri.c:835
#define GNUNET_log(kind,...)
GNUNET_GenericReturnValue
Named constants for return values.
@ GNUNET_OK
@ GNUNET_ERROR_TYPE_WARNING
@ GNUNET_ERROR_TYPE_INFO
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:981
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:1305
An address of this peer.
char * url
Textual representation of the address.
struct GDS_Underlay * u
Underlay of this address.
struct GNUNET_DHTU_Source * source
Underlay handle for the address.

References a_head, a_tail, address, broadcast_hello(), ctx, GDS_my_hello, GNUNET_CONTAINER_DLL_insert, GNUNET_ERROR_TYPE_INFO, GNUNET_ERROR_TYPE_WARNING, GNUNET_HELLO_builder_add_address(), GNUNET_log, GNUNET_new, GNUNET_NO, GNUNET_OK, GNUNET_SCHEDULER_add_now(), GNUNET_SCHEDULER_cancel(), GNUNET_strdup, hello_task, source, MyAddress::source, u, MyAddress::u, and MyAddress::url.

Referenced by load_underlay().

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◆ u_address_del()

static void u_address_del ( void *  ctx)
static

Function to call with expired addresses of this peer.

Parameters
[in]ctxstorage space used by the DHT in association with this address

Definition at line 306 of file gnunet-service-dht.c.

307{
308 struct MyAddress *a = ctx;
309
311 "Underlay deletes address %s for this peer\n",
312 a->url);
314 a->url);
316 a_tail,
317 a);
318 GNUNET_free (a->url);
319 GNUNET_free (a);
320 if (NULL != hello_task)
323 NULL);
324}
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
enum GNUNET_GenericReturnValue GNUNET_HELLO_builder_del_address(struct GNUNET_HELLO_Builder *builder, const char *address)
Remove individual address from the builder.
Definition: hello-uri.c:885

References a_head, a_tail, broadcast_hello(), ctx, GDS_my_hello, GNUNET_CONTAINER_DLL_remove, GNUNET_ERROR_TYPE_INFO, GNUNET_free, GNUNET_HELLO_builder_del_address(), GNUNET_log, GNUNET_SCHEDULER_add_now(), GNUNET_SCHEDULER_cancel(), hello_task, and MyAddress::url.

Referenced by load_underlay().

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◆ GDS_u_try_connect()

void GDS_u_try_connect ( const struct GNUNET_PeerIdentity pid,
const char *  address 
)

Ask all underlays to connect to peer pid at address.

Parameters
pididentity of the peer we would connect to
addressan address of pid

Definition at line 328 of file gnunet-service-dht.c.

330{
331 for (struct GDS_Underlay *u = u_head;
332 NULL != u;
333 u = u->next)
334 u->dhtu->try_connect (u->dhtu->cls,
335 pid,
336 address);
337}
static struct GNUNET_PeerIdentity pid
Identity of the peer we transmit to / connect to.

References address, pid, u, and u_head.

Referenced by GDS_try_connect().

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◆ GDS_u_send()

void GDS_u_send ( struct GDS_Underlay u,
struct GNUNET_DHTU_Target target,
const void *  msg,
size_t  msg_size,
GNUNET_SCHEDULER_TaskCallback  finished_cb,
void *  finished_cb_cls 
)

Send message to some other participant over the network.

Note that sending is not guaranteeing that the other peer actually received the message. For any given target, the DHT must wait for the finished_cb to be called before calling send() again.

Parameters
uunderlay to use for transmission
targetreceiver identification
msgmessage
msg_sizenumber of bytes in msg
finished_cbfunction called once transmission is done (not called if target disconnects, then only the disconnect_cb is called).
finished_cb_clsclosure for finished_cb

Definition at line 341 of file gnunet-service-dht.c.

347{
348 u->dhtu->send (u->dhtu->cls,
349 target,
350 msg,
351 msg_size,
353 finished_cb_cls);
354}
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
static void finished_cb(enum GNUNET_GenericReturnValue rv)

References finished_cb(), msg, and u.

Referenced by do_send().

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◆ GDS_u_drop()

void GDS_u_drop ( struct GDS_Underlay u,
struct GNUNET_DHTU_PreferenceHandle ph 
)

Drop a hold ph from underlay u.

Parameters
uthe underlay controlling the hold
phthe preference handle

Definition at line 358 of file gnunet-service-dht.c.

360{
361 u->dhtu->drop (ph);
362}

References u.

Referenced by GDS_u_disconnect().

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◆ GDS_u_hold()

struct GNUNET_DHTU_PreferenceHandle * GDS_u_hold ( struct GDS_Underlay u,
struct GNUNET_DHTU_Target target 
)

Create a hold on target at underlay u.

Parameters
uthe underlay controlling the target
targetthe peer to hold the connection to

Definition at line 366 of file gnunet-service-dht.c.

368{
369 return u->dhtu->hold (u->dhtu->cls,
370 target);
371}

References GNUNET_DHTU_PreferenceHandle::target, and u.

Referenced by update_hold().

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◆ shutdown_task()

static void shutdown_task ( void *  cls)
static

Task run during shutdown.

Parameters
clsunused

Definition at line 380 of file gnunet-service-dht.c.

381{
382 struct GDS_Underlay *u;
383
384 while (NULL != (u = u_head))
385 {
386 GNUNET_PLUGIN_unload (u->libname,
387 u->dhtu);
389 u_tail,
390 u);
391 if (0 == strcmp (u->name, "gnunet"))
392 {
393 DHTU_gnunet_done (u->dhtu);
394 }
395 else if (0 == strcmp (u->name, "ip"))
396 {
397 DHTU_ip_done (u->dhtu);
398 }
399 else
400 {
401 GNUNET_assert (0);
402 }
403 GNUNET_free (u->name);
404 GNUNET_free (u);
405 }
409 if (NULL != GDS_block_context)
410 {
412 GDS_block_context = NULL;
413 }
415 if (NULL != GDS_stats)
416 {
418 GNUNET_YES);
419 GDS_stats = NULL;
420 }
421 if (NULL != GDS_my_hello)
422 {
424 GDS_my_hello = NULL;
425 }
426 if (NULL != hello_task)
427 {
429 hello_task = NULL;
430 }
431}
static struct GDS_Underlay * u_tail
Handles for the DHT underlays.
struct GNUNET_BLOCK_Context * GDS_block_context
Our handle to the BLOCK library.
static void GDS_CLIENTS_stop(void)
Shutdown client subsystem.
void GDS_DATACACHE_done()
Shutdown datacache subsystem.
void GDS_NEIGHBOURS_done()
Shutdown neighbours subsystem.
void GDS_ROUTING_done()
Shutdown routing subsystem.
void GNUNET_BLOCK_context_destroy(struct GNUNET_BLOCK_Context *ctx)
Destroy the block context.
Definition: block.c:156
void GNUNET_HELLO_builder_free(struct GNUNET_HELLO_Builder *builder)
Release resources of a builder.
Definition: hello-uri.c:373
@ GNUNET_YES
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
void * GNUNET_PLUGIN_unload(const char *library_name, void *arg)
Unload plugin (runs the "done" callback and returns whatever "done" returned).
Definition: plugin.c:242
void GNUNET_STATISTICS_destroy(struct GNUNET_STATISTICS_Handle *h, int sync_first)
Destroy a handle (free all state associated with it).
void * DHTU_gnunet_done(struct GNUNET_DHTU_PluginFunctions *api)
Exit point from the plugin.
void * DHTU_ip_done(struct GNUNET_DHTU_PluginFunctions *api)
Exit point from the plugin.

References DHTU_gnunet_done(), DHTU_ip_done(), GDS_block_context, GDS_CLIENTS_stop(), GDS_DATACACHE_done(), GDS_my_hello, GDS_NEIGHBOURS_done(), GDS_ROUTING_done(), GDS_stats, GNUNET_assert, GNUNET_BLOCK_context_destroy(), GNUNET_CONTAINER_DLL_remove, GNUNET_free, GNUNET_HELLO_builder_free(), GNUNET_PLUGIN_unload(), GNUNET_SCHEDULER_cancel(), GNUNET_STATISTICS_destroy(), GNUNET_YES, hello_task, u, u_head, and u_tail.

Referenced by run().

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◆ load_underlay()

static void load_underlay ( void *  cls,
const char *  section 
)
static

Function iterating over all configuration sections.

Loads plugins for enabled DHT underlays.

Parameters
clsNULL
sectionconfiguration section to inspect

NOTE: This is not pretty, but it allows us to avoid dynamically loading plugins

Definition at line 442 of file gnunet-service-dht.c.

444{
445 struct GDS_Underlay *u;
446
447 (void) cls;
448 if (0 != strncasecmp (section,
449 "dhtu-",
450 strlen ("dhtu-")))
451 return;
452 if (GNUNET_YES !=
454 section,
455 "ENABLED"))
456 return;
457 section += strlen ("dhtu-");
458 u = GNUNET_new (struct GDS_Underlay);
459 u->env.cls = u;
460 u->env.cfg = GDS_cfg;
461 u->env.address_add_cb = &u_address_add;
462 u->env.address_del_cb = &u_address_del;
463 u->env.network_size_cb = &update_network_size_estimate;
464 u->env.connect_cb = &GDS_u_connect;
465 u->env.disconnect_cb = &GDS_u_disconnect;
466 u->env.receive_cb = &GDS_u_receive;
467
470 if (0 == strcmp (section, "gnunet"))
471 {
472 u->dhtu = DHTU_gnunet_init (&u->env);
473 }
474 else if (0 == strcmp (section, "ip"))
475 {
476 u->dhtu = DHTU_ip_init (&u->env);
477 }
478 if (NULL == u->dhtu)
479 {
480 GNUNET_free (u);
481 return;
482 }
483 u->name = GNUNET_strdup (section);
485 u_tail,
486 u);
487}
static void u_address_add(void *cls, const char *address, struct GNUNET_DHTU_Source *source, void **ctx)
Function to call with new addresses of this peer.
static void u_address_del(void *ctx)
Function to call with expired addresses of this peer.
static void update_network_size_estimate(void *cls, struct GNUNET_TIME_Absolute timestamp, double logestimate, double std_dev)
Callback that is called when network size estimate is updated.
const struct GNUNET_CONFIGURATION_Handle * GDS_cfg
Configuration we use.
void GDS_u_disconnect(void *ctx)
Function to call when we disconnected from a peer and can henceforth cannot transmit to that peer any...
void GDS_u_connect(void *cls, struct GNUNET_DHTU_Target *target, const struct GNUNET_PeerIdentity *pid, void **ctx)
Function to call when we connect to a peer and can henceforth transmit to that peer.
void GDS_u_receive(void *cls, void **tctx, void **sctx, const void *message, size_t message_size)
Function to call when we receive a message.
enum GNUNET_GenericReturnValue GNUNET_CONFIGURATION_get_value_yesno(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option)
Get a configuration value that should be in a set of "YES" or "NO".
struct GNUNET_DHTU_PluginFunctions * DHTU_gnunet_init(struct GNUNET_DHTU_PluginEnvironment *env)
Entry point for the plugin.
struct GNUNET_DHTU_PluginFunctions * DHTU_ip_init(struct GNUNET_DHTU_PluginEnvironment *env)
Entry point for the plugin.

References DHTU_gnunet_init(), DHTU_ip_init(), GDS_cfg, GDS_u_connect(), GDS_u_disconnect(), GDS_u_receive(), GNUNET_CONFIGURATION_get_value_yesno(), GNUNET_CONTAINER_DLL_insert, GNUNET_free, GNUNET_new, GNUNET_strdup, GNUNET_YES, u, u_address_add(), u_address_del(), u_head, u_tail, and update_network_size_estimate().

Referenced by run().

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◆ run()

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

Process dht requests.

Parameters
clsclosure
cconfiguration to use
servicethe initialized service

Definition at line 498 of file gnunet-service-dht.c.

501{
502 GDS_cfg = c;
504 {
505 char *keyfile;
506
507 if (GNUNET_OK !=
509 "PEER",
510 "PRIVATE_KEY",
511 &keyfile))
512 {
514 "PEER",
515 "PRIVATE_KEY");
517 return;
518 }
519 if (GNUNET_SYSERR ==
523 {
525 "Failed to setup peer's private key\n");
526 GNUNET_free (keyfile);
528 return;
529 }
530 GNUNET_free (keyfile);
531 }
536 sizeof(struct GNUNET_PeerIdentity),
540 GDS_cfg);
545 NULL);
546 if (GNUNET_OK !=
548 {
550 return;
551 }
554 NULL);
555 if (NULL == u_head)
556 {
558 "No DHT underlays configured!\n");
560 return;
561 }
562}
static struct GNUNET_SERVICE_Handle * service
Handle to our service instance.
static void load_underlay(void *cls, const char *section)
Function iterating over all configuration sections.
struct GNUNET_PeerIdentity GDS_my_identity
Identity of this peer.
static void shutdown_task(void *cls)
Task run during shutdown.
struct GNUNET_HashCode GDS_my_identity_hash
Hash of the identity of this peer.
struct GNUNET_SERVICE_Handle * GDS_service
Handle for the service.
static void GDS_CLIENTS_init(void)
Initialize client subsystem.
void GDS_DATACACHE_init()
Initialize datacache subsystem.
enum GNUNET_GenericReturnValue GDS_NEIGHBOURS_init()
Initialize neighbours subsystem.
void GDS_ROUTING_init()
Initialize routing subsystem.
struct GNUNET_BLOCK_Context * GNUNET_BLOCK_context_create(const struct GNUNET_CONFIGURATION_Handle *cfg)
Create a block context.
Definition: block.c:140
enum GNUNET_GenericReturnValue GNUNET_CONFIGURATION_get_value_filename(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, char **value)
Get a configuration value that should be the name of a file or directory.
void GNUNET_CONFIGURATION_iterate_sections(const struct GNUNET_CONFIGURATION_Handle *cfg, GNUNET_CONFIGURATION_SectionIterator iter, void *iter_cls)
Iterate over all sections in the configuration.
enum GNUNET_GenericReturnValue GNUNET_CRYPTO_eddsa_key_from_file(const char *filename, int do_create, struct GNUNET_CRYPTO_EddsaPrivateKey *pkey)
Create a new private key by reading it from a file.
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
void GNUNET_CRYPTO_hash(const void *block, size_t size, struct GNUNET_HashCode *ret)
Compute hash of a given block.
Definition: crypto_hash.c:41
struct GNUNET_HELLO_Builder * GNUNET_HELLO_builder_new(const struct GNUNET_PeerIdentity *pid)
Allocate builder.
Definition: hello-uri.c:355
@ GNUNET_SYSERR
void GNUNET_log_config_missing(enum GNUNET_ErrorType kind, const char *section, const char *option)
Log error message about missing configuration option.
@ GNUNET_ERROR_TYPE_ERROR
void GNUNET_SCHEDULER_shutdown(void)
Request the shutdown of a scheduler.
Definition: scheduler.c:567
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:1340
struct GNUNET_STATISTICS_Handle * GNUNET_STATISTICS_create(const char *subsystem, const struct GNUNET_CONFIGURATION_Handle *cfg)
Get handle for the statistics service.
The identity of the host (wraps the signing key of the peer).
struct GNUNET_CRYPTO_EddsaPublicKey public_key

References GDS_block_context, GDS_cfg, GDS_CLIENTS_init(), GDS_DATACACHE_init(), GDS_my_hello, GDS_my_identity, GDS_my_identity_hash, GDS_my_private_key, GDS_NEIGHBOURS_init(), GDS_ROUTING_init(), GDS_service, GDS_stats, GNUNET_BLOCK_context_create(), GNUNET_CONFIGURATION_get_value_filename(), GNUNET_CONFIGURATION_iterate_sections(), GNUNET_CRYPTO_eddsa_key_from_file(), GNUNET_CRYPTO_eddsa_key_get_public(), GNUNET_CRYPTO_hash(), GNUNET_ERROR_TYPE_ERROR, GNUNET_free, GNUNET_HELLO_builder_new(), GNUNET_log, GNUNET_log_config_missing(), GNUNET_OK, GNUNET_SCHEDULER_add_shutdown(), GNUNET_SCHEDULER_shutdown(), GNUNET_STATISTICS_create(), GNUNET_SYSERR, GNUNET_YES, load_underlay(), GNUNET_PeerIdentity::public_key, service, shutdown_task(), and u_head.

Here is the call graph for this function:

◆ GNUNET_SERVICE_MAIN()

Variable Documentation

◆ GDS_my_hello

struct GNUNET_HELLO_Builder* GDS_my_hello

◆ GDS_my_identity

◆ GDS_my_identity_hash

◆ GDS_my_private_key

struct GNUNET_CRYPTO_EddsaPrivateKey GDS_my_private_key

Our private key.

Definition at line 140 of file gnunet-service-dht.c.

Referenced by broadcast_hello(), handle_dht_local_hello_get(), handle_find_my_hello(), run(), and sign_path().

◆ hello_task

struct GNUNET_SCHEDULER_Task* hello_task
static

Task broadcasting our HELLO.

Definition at line 145 of file gnunet-service-dht.c.

Referenced by broadcast_hello(), shutdown_task(), u_address_add(), and u_address_del().

◆ u_head

struct GDS_Underlay* u_head
static

Handles for the DHT underlays.

Definition at line 150 of file gnunet-service-dht.c.

Referenced by GDS_u_try_connect(), load_underlay(), run(), shutdown_task(), and update_network_size_estimate().

◆ u_tail

struct GDS_Underlay* u_tail
static

Handles for the DHT underlays.

Definition at line 155 of file gnunet-service-dht.c.

Referenced by load_underlay(), and shutdown_task().

◆ a_head

struct MyAddress* a_head
static

Head of addresses of this peer.

Definition at line 160 of file gnunet-service-dht.c.

Referenced by u_address_add(), and u_address_del().

◆ a_tail

struct MyAddress* a_tail
static

Tail of addresses of this peer.

Definition at line 165 of file gnunet-service-dht.c.

Referenced by u_address_add(), and u_address_del().

◆ log_of_network_size_estimate

double log_of_network_size_estimate
static

log of the current network size estimate, used as the point where we switch between random and deterministic routing.

Definition at line 171 of file gnunet-service-dht.c.

Referenced by GDS_NSE_get(), and update_network_size_estimate().