GNUnet  0.17.6
Data Structures | Functions | Variables
gnunet-service-revocation.c File Reference

key revocation service More...

#include "platform.h"
#include <math.h>
#include "gnunet_util_lib.h"
#include "gnunet_block_lib.h"
#include "gnunet_constants.h"
#include "gnunet_protocols.h"
#include "gnunet_signatures.h"
#include "gnunet_statistics_service.h"
#include "gnunet_core_service.h"
#include "gnunet_revocation_service.h"
#include "gnunet_setu_service.h"
#include "revocation.h"
#include <gcrypt.h>
Include dependency graph for gnunet-service-revocation.c:

Go to the source code of this file.

Data Structures

struct  PeerEntry
 Per-peer information. More...
 

Functions

static struct PeerEntrynew_peer_entry (const struct GNUNET_PeerIdentity *peer)
 Create a new PeerEntry and add it to the peers multipeermap. More...
 
static enum GNUNET_GenericReturnValue verify_revoke_message (const struct RevokeMessage *rm)
 An revoke message has been received, check that it is well-formed. More...
 
static void * client_connect_cb (void *cls, struct GNUNET_SERVICE_Client *client, struct GNUNET_MQ_Handle *mq)
 Handle client connecting to the service. More...
 
static void client_disconnect_cb (void *cls, struct GNUNET_SERVICE_Client *client, void *app_cls)
 Handle client connecting to the service. More...
 
static void handle_query_message (void *cls, const struct QueryMessage *qm)
 Handle QUERY message from client. More...
 
static enum GNUNET_GenericReturnValue do_flood (void *cls, const struct GNUNET_PeerIdentity *target, void *value)
 Flood the given revocation message to all neighbours. More...
 
static enum GNUNET_GenericReturnValue publicize_rm (const struct RevokeMessage *rm)
 Publicize revocation message. More...
 
static int check_revoke_message (void *cls, const struct RevokeMessage *rm)
 
static void handle_revoke_message (void *cls, const struct RevokeMessage *rm)
 Handle REVOKE message from client. More...
 
static int check_p2p_revoke (void *cls, const struct RevokeMessage *rm)
 
static void handle_p2p_revoke (void *cls, const struct RevokeMessage *rm)
 Core handler for flooded revocation messages. More...
 
static void add_revocation (void *cls, const struct GNUNET_SETU_Element *element, uint64_t current_size, enum GNUNET_SETU_Status status)
 Callback for set operation results. More...
 
static void transmit_task_cb (void *cls)
 The timeout for performing the set union has expired, run the set operation on the revocation certificates. More...
 
static void * handle_core_connect (void *cls, const struct GNUNET_PeerIdentity *peer, struct GNUNET_MQ_Handle *mq)
 Method called whenever a peer connects. More...
 
static void handle_core_disconnect (void *cls, const struct GNUNET_PeerIdentity *peer, void *internal_cls)
 Method called whenever a peer disconnects. More...
 
static int free_entry (void *cls, const struct GNUNET_HashCode *key, void *value)
 Free all values in a hash map. More...
 
static void shutdown_task (void *cls)
 Task run during shutdown. More...
 
static void core_init (void *cls, const struct GNUNET_PeerIdentity *identity)
 Called on core init/fail. More...
 
static void handle_revocation_union_request (void *cls, const struct GNUNET_PeerIdentity *other_peer, const struct GNUNET_MessageHeader *context_msg, struct GNUNET_SETU_Request *request)
 Called when another peer wants to do a set operation with the local peer. More...
 
static void run (void *cls, const struct GNUNET_CONFIGURATION_Handle *c, struct GNUNET_SERVICE_Handle *service)
 Handle network size estimate clients. More...
 
 GNUNET_SERVICE_MAIN ("revocation", GNUNET_SERVICE_OPTION_NONE, &run, &client_connect_cb, &client_disconnect_cb, NULL, GNUNET_MQ_hd_fixed_size(query_message, GNUNET_MESSAGE_TYPE_REVOCATION_QUERY, struct QueryMessage, NULL), GNUNET_MQ_hd_var_size(revoke_message, GNUNET_MESSAGE_TYPE_REVOCATION_REVOKE, struct RevokeMessage, NULL), GNUNET_MQ_handler_end())
 Define "main" method using service macro. More...
 

Variables

static struct GNUNET_SETU_Handlerevocation_set
 Set from all revocations known to us. More...
 
static struct GNUNET_CONTAINER_MultiHashMaprevocation_map
 Hash map with all revoked keys, maps the hash of the public key to the respective struct RevokeMessage. More...
 
static const struct GNUNET_CONFIGURATION_Handlecfg
 Handle to our current configuration. More...
 
static struct GNUNET_STATISTICS_Handlestats
 Handle to the statistics service. More...
 
static struct GNUNET_CORE_Handlecore_api
 Handle to the core service (for flooding) More...
 
static struct GNUNET_CONTAINER_MultiPeerMappeers
 Map of all connected peers. More...
 
static struct GNUNET_PeerIdentity my_identity
 The peer identity of this peer. More...
 
static struct GNUNET_DISK_FileHandlerevocation_db
 File handle for the revocation database. More...
 
static struct GNUNET_SETU_ListenHandlerevocation_union_listen_handle
 Handle for us listening to incoming revocation set union requests. More...
 
static unsigned long long revocation_work_required
 Amount of work required (W-bit collisions) for REVOCATION proofs, in collision-bits. More...
 
static struct GNUNET_TIME_Relative epoch_duration
 Length of an expiration expoch. More...
 
static struct GNUNET_HashCode revocation_set_union_app_id
 Our application ID for set union operations. More...
 

Detailed Description

key revocation service

Author
Christian Grothoff

The purpose of this service is to allow users to permanently revoke (compromised) keys. This is done by flooding the network with the revocation requests. To reduce the attack potential offered by such flooding, revocations must include a proof of work. We use the set service for efficiently computing the union of revocations of peers that connect.

TODO:

Definition in file gnunet-service-revocation.c.

Function Documentation

◆ new_peer_entry()

static struct PeerEntry* new_peer_entry ( const struct GNUNET_PeerIdentity peer)
static

Create a new PeerEntry and add it to the peers multipeermap.

Parameters
peerthe peer identity
Returns
a pointer to the new PeerEntry

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

151 {
152  struct PeerEntry *peer_entry;
153 
154  peer_entry = GNUNET_new (struct PeerEntry);
155  peer_entry->id = *peer;
158  &peer_entry->id,
159  peer_entry,
161  return peer_entry;
162 }
static struct GNUNET_CONTAINER_MultiPeerMap * peers
Map of all connected peers.
int GNUNET_CONTAINER_multipeermap_put(struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key, void *value, enum GNUNET_CONTAINER_MultiHashMapOption opt)
Store a key-value pair in the map.
@ 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_OK
Definition: gnunet_common.h:99
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
Per-peer information.
struct GNUNET_PeerIdentity id
What is the identity of the peer?
struct GNUNET_TESTBED_Peer * peer
The peer associated with this model.

References GNUNET_assert, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY, GNUNET_CONTAINER_multipeermap_put(), GNUNET_new, GNUNET_OK, PeerEntry::id, peer, and peers.

Referenced by handle_core_connect(), and handle_revocation_union_request().

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◆ verify_revoke_message()

static enum GNUNET_GenericReturnValue verify_revoke_message ( const struct RevokeMessage rm)
static

An revoke message has been received, check that it is well-formed.

Parameters
rmthe message to verify
Returns
GNUNET_YES if the message is verified GNUNET_NO if the key/signature don't verify

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

174 {
175  const struct GNUNET_REVOCATION_PowP *pow
176  = (const struct GNUNET_REVOCATION_PowP *) &rm[1];
177 
178  if (GNUNET_YES !=
180  (unsigned int) revocation_work_required,
182  {
184  "Proof of work invalid!\n");
185  GNUNET_break_op (0);
186  return GNUNET_NO;
187  }
188  return GNUNET_YES;
189 }
static struct GNUNET_TIME_Relative epoch_duration
Length of an expiration expoch.
static unsigned long long revocation_work_required
Amount of work required (W-bit collisions) for REVOCATION proofs, in collision-bits.
#define GNUNET_log(kind,...)
@ GNUNET_YES
@ GNUNET_NO
Definition: gnunet_common.h:98
#define GNUNET_break_op(cond)
Use this for assertion violations caused by other peers (i.e.
@ GNUNET_ERROR_TYPE_DEBUG
enum GNUNET_GenericReturnValue GNUNET_REVOCATION_check_pow(const struct GNUNET_REVOCATION_PowP *pow, unsigned int matching_bits, struct GNUNET_TIME_Relative epoch_duration)
Check if the given proof-of-work is valid.
Struct for a proof of work as part of the revocation.

◆ client_connect_cb()

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

Handle client connecting to the service.

Parameters
clsNULL
clientthe new client
mqthe message queue of client
Returns
client

Definition at line 201 of file gnunet-service-revocation.c.

204 {
205  return client;
206 }

◆ client_disconnect_cb()

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

Handle client connecting to the service.

Parameters
clsNULL
clientthe new client
app_clsmust alias client

Definition at line 217 of file gnunet-service-revocation.c.

220 {
221  GNUNET_assert (client == app_cls);
222 }

References GNUNET_assert.

◆ handle_query_message()

static void handle_query_message ( void *  cls,
const struct QueryMessage qm 
)
static

Handle QUERY message from client.

Parameters
clsclient who sent the message
qmthe message received

Definition at line 232 of file gnunet-service-revocation.c.

234 {
235  struct GNUNET_SERVICE_Client *client = cls;
236  struct GNUNET_MQ_Envelope *env;
237  struct QueryResponseMessage *qrm;
238  struct GNUNET_HashCode hc;
239  int res;
240 
241  GNUNET_CRYPTO_hash (&qm->key,
242  sizeof(struct GNUNET_IDENTITY_PublicKey),
243  &hc);
245  &hc);
247  (GNUNET_NO == res)
248  ? "Received revocation check for valid key `%s' from client\n"
249  : "Received revocation check for revoked key `%s' from client\n",
250  GNUNET_h2s (&hc));
251  env = GNUNET_MQ_msg (qrm,
253  qrm->is_valid = htonl ((GNUNET_YES == res) ? GNUNET_NO : GNUNET_YES);
255  env);
257 }
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
static int res
static struct GNUNET_CONTAINER_MultiHashMap * revocation_map
Hash map with all revoked keys, maps the hash of the public key to the respective struct RevokeMessag...
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
enum GNUNET_GenericReturnValue GNUNET_CONTAINER_multihashmap_contains(const struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key)
Check if the map contains any value under the given key (including values that are NULL).
const char * GNUNET_h2s(const struct GNUNET_HashCode *hc)
Convert a hash value to a string (for printing debug messages).
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:302
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:71
#define GNUNET_MESSAGE_TYPE_REVOCATION_QUERY_RESPONSE
Service to client: answer if key was revoked!
struct GNUNET_MQ_Handle * GNUNET_SERVICE_client_get_mq(struct GNUNET_SERVICE_Client *c)
Obtain the message queue of c.
Definition: service.c:2442
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2248
A 512-bit hashcode.
An identity key as per LSD0001.
Handle to a client that is connected to a service.
Definition: service.c:251
struct GNUNET_IDENTITY_PublicKey key
Key to check.
Definition: revocation.h:52
Key revocation response.
Definition: revocation.h:60
uint32_t is_valid
GNUNET_NO if revoked, GNUNET_YES if valid.
Definition: revocation.h:69

◆ do_flood()

static enum GNUNET_GenericReturnValue do_flood ( void *  cls,
const struct GNUNET_PeerIdentity target,
void *  value 
)
static

Flood the given revocation message to all neighbours.

Parameters
clsthe struct RevokeMessage to flood
targeta neighbour
valueour struct PeerEntry for the neighbour
Returns
GNUNET_OK (continue to iterate)

Definition at line 232 of file gnunet-service-revocation.c.

272 {
273  const struct RevokeMessage *rm = cls;
274  struct PeerEntry *pe = value;
275  struct GNUNET_MQ_Envelope *e;
276  struct RevokeMessage *cp;
277 
278  if (NULL == pe->mq)
279  return GNUNET_OK; /* peer connected to us via SET,
280  but we have no direct CORE
281  connection for flooding */
282  e = GNUNET_MQ_msg_extra (cp,
283  htonl (rm->pow_size),
285  *cp = *rm;
286  memcpy (&cp[1],
287  &rm[1],
288  htonl (rm->pow_size));
290  "Flooding revocation to `%s'\n",
291  GNUNET_i2s (target));
292  GNUNET_MQ_send (pe->mq,
293  e);
294  return GNUNET_OK;
295 }
static struct Experiment * e
static char * value
Value of the record to add/remove.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
#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:56
#define GNUNET_MESSAGE_TYPE_REVOCATION_REVOKE
Client to service OR peer-to-peer: revoke this key!
struct GNUNET_MQ_Handle * mq
Queue for sending messages to this peer.
Revoke key.
Definition: revocation.h:81
uint32_t pow_size
Length of PoW with signature.
Definition: revocation.h:90

References env, GNUNET_CONTAINER_multihashmap_contains(), GNUNET_CRYPTO_hash(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_h2s(), GNUNET_log, GNUNET_MESSAGE_TYPE_REVOCATION_QUERY_RESPONSE, GNUNET_MQ_msg, GNUNET_MQ_send(), GNUNET_NO, GNUNET_SERVICE_client_continue(), GNUNET_SERVICE_client_get_mq(), GNUNET_YES, QueryResponseMessage::is_valid, QueryMessage::key, res, and revocation_map.

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◆ publicize_rm()

static enum GNUNET_GenericReturnValue publicize_rm ( const struct RevokeMessage rm)
static

Publicize revocation message.

Stores the message locally in the database and passes it to all connected neighbours (and adds it to the set for future connections).

Parameters
rmmessage to publicize
Returns
GNUNET_OK on success, GNUNET_NO if we encountered an error, GNUNET_SYSERR if the message was malformed

Definition at line 232 of file gnunet-service-revocation.c.

309 {
310  struct RevokeMessage *cp;
311  struct GNUNET_HashCode hc;
312  struct GNUNET_SETU_Element e;
313  ssize_t pklen;
314  const struct GNUNET_REVOCATION_PowP *pow
315  = (const struct GNUNET_REVOCATION_PowP *) &rm[1];
316  const struct GNUNET_IDENTITY_PublicKey *pk
317  = (const struct GNUNET_IDENTITY_PublicKey *) &pow[1];
318 
320  if (0 > pklen)
321  {
322  GNUNET_break_op (0);
323  return GNUNET_SYSERR;
324  }
326  pklen,
327  &hc);
328  if (GNUNET_YES ==
330  &hc))
331  {
333  "Duplicate revocation received from peer. Ignored.\n");
334  return GNUNET_OK;
335  }
336  if (GNUNET_OK !=
338  {
339  GNUNET_break_op (0);
340  return GNUNET_SYSERR;
341  }
342  /* write to disk */
343  if (sizeof(struct RevokeMessage) !=
345  rm,
346  sizeof(struct RevokeMessage)))
347  {
349  "write");
350  return GNUNET_NO;
351  }
352  if (GNUNET_OK !=
354  {
356  "sync");
357  return GNUNET_NO;
358  }
359  /* keep copy in memory */
360  cp = (struct RevokeMessage *) GNUNET_copy_message (&rm->header);
363  &hc,
364  cp,
366  /* add to set for future connections */
367  e.size = htons (rm->header.size);
368  e.element_type = GNUNET_BLOCK_TYPE_REVOCATION;
369  e.data = rm;
370  if (GNUNET_OK !=
372  &e,
373  NULL,
374  NULL))
375  {
376  GNUNET_break (0);
377  return GNUNET_OK;
378  }
379  else
380  {
382  "Added revocation info to SET\n");
383  }
384  /* flood to neighbours */
386  &do_flood,
387  cp);
388  return GNUNET_OK;
389 }
@ GNUNET_BLOCK_TYPE_REVOCATION
Block type for a revocation message by which a key is revoked.
struct GNUNET_IDENTITY_PrivateKey pk
Private key from command line option, or NULL.
static struct GNUNET_DISK_FileHandle * revocation_db
File handle for the revocation database.
static struct GNUNET_SETU_Handle * revocation_set
Set from all revocations known to us.
static enum GNUNET_GenericReturnValue do_flood(void *cls, const struct GNUNET_PeerIdentity *target, void *value)
Flood the given revocation message to all neighbours.
static enum GNUNET_GenericReturnValue verify_revoke_message(const struct RevokeMessage *rm)
An revoke message has been received, check that it is well-formed.
ssize_t GNUNET_DISK_file_write(const struct GNUNET_DISK_FileHandle *h, const void *buffer, size_t n)
Write a buffer to a file.
Definition: disk.c:686
enum GNUNET_GenericReturnValue GNUNET_DISK_file_sync(const struct GNUNET_DISK_FileHandle *h)
Write file changes to disk.
Definition: disk.c:1425
int GNUNET_CONTAINER_multipeermap_iterate(struct GNUNET_CONTAINER_MultiPeerMap *map, GNUNET_CONTAINER_PeerMapIterator it, void *it_cls)
Iterate over all entries in the map.
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.
ssize_t GNUNET_IDENTITY_key_get_length(const struct GNUNET_IDENTITY_PublicKey *key)
Get the compacted length of a GNUNET_IDENTITY_PublicKey.
Definition: identity_api.c:991
@ GNUNET_SYSERR
Definition: gnunet_common.h:97
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur.
#define GNUNET_log_strerror(level, cmd)
Log an error message at log-level 'level' that indicates a failure of the command 'cmd' with the mess...
@ GNUNET_ERROR_TYPE_ERROR
struct GNUNET_MessageHeader * GNUNET_copy_message(const struct GNUNET_MessageHeader *msg)
Create a copy of the given message.
int GNUNET_SETU_add_element(struct GNUNET_SETU_Handle *set, const struct GNUNET_SETU_Element *element, GNUNET_SCHEDULER_TaskCallback cb, void *cb_cls)
Add an element to the given set.
Definition: setu_api.c:429
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format.
Element stored in a set.
struct GNUNET_MessageHeader header
Type: GNUNET_MESSAGE_TYPE_REVOCATION_REVOKE.
Definition: revocation.h:85

Referenced by handle_p2p_revoke(), and handle_revoke_message().

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◆ check_revoke_message()

static int check_revoke_message ( void *  cls,
const struct RevokeMessage rm 
)
static

Definition at line 393 of file gnunet-service-revocation.c.

395 {
396  uint16_t size;
397 
398  size = ntohs (rm->header.size);
399  if (size <= sizeof(struct RevokeMessage) ||
400  (size > UINT16_MAX))
401  {
402  GNUNET_break (0);
403  return GNUNET_SYSERR;
404  }
405  return GNUNET_OK;
406 
407 }
static unsigned int size
Size of the "table".
Definition: peer.c:67

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

◆ handle_revoke_message()

static void handle_revoke_message ( void *  cls,
const struct RevokeMessage rm 
)
static

Handle REVOKE message from client.

Parameters
clsclient who sent the message
rmthe message received

Definition at line 417 of file gnunet-service-revocation.c.

419 {
420  struct GNUNET_SERVICE_Client *client = cls;
421  struct GNUNET_MQ_Envelope *env;
422  struct RevocationResponseMessage *rrm;
423  int ret;
424 
426  "Received REVOKE message from client\n");
427  if (GNUNET_SYSERR == (ret = publicize_rm (rm)))
428  {
429  GNUNET_break_op (0);
431  return;
432  }
433  env = GNUNET_MQ_msg (rrm,
435  rrm->is_valid = htonl ((GNUNET_OK == ret) ? GNUNET_NO : GNUNET_YES);
437  env);
439 }
static int ret
Return value of the commandline.
Definition: gnunet-abd.c:81
static enum GNUNET_GenericReturnValue publicize_rm(const struct RevokeMessage *rm)
Publicize revocation message.
#define GNUNET_MESSAGE_TYPE_REVOCATION_REVOKE_RESPONSE
Service to client: revocation confirmed.
void GNUNET_SERVICE_client_drop(struct GNUNET_SERVICE_Client *c)
Ask the server to disconnect from the given client.
Definition: service.c:2329
Key revocation response.
Definition: revocation.h:100
uint32_t is_valid
GNUNET_NO if revocation failed for internal reasons (e.g.
Definition: revocation.h:110

References env, GNUNET_break_op, GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_MESSAGE_TYPE_REVOCATION_REVOKE_RESPONSE, GNUNET_MQ_msg, GNUNET_MQ_send(), GNUNET_NO, GNUNET_OK, GNUNET_SERVICE_client_continue(), GNUNET_SERVICE_client_drop(), GNUNET_SERVICE_client_get_mq(), GNUNET_SYSERR, GNUNET_YES, RevocationResponseMessage::is_valid, publicize_rm(), and ret.

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◆ check_p2p_revoke()

static int check_p2p_revoke ( void *  cls,
const struct RevokeMessage rm 
)
static

Definition at line 443 of file gnunet-service-revocation.c.

445 {
446  uint16_t size;
447 
448  size = ntohs (rm->header.size);
449  if (size <= sizeof(struct RevokeMessage))
450  {
451  GNUNET_break (0);
452  return GNUNET_SYSERR;
453  }
454  return GNUNET_OK;
455 
456 }

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

◆ handle_p2p_revoke()

static void handle_p2p_revoke ( void *  cls,
const struct RevokeMessage rm 
)
static

Core handler for flooded revocation messages.

Parameters
clsclosure unused
rmrevocation message

Definition at line 466 of file gnunet-service-revocation.c.

468 {
470  "Received REVOKE message\n");
472  publicize_rm (rm));
473 }

References GNUNET_break_op, GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_SYSERR, and publicize_rm().

Referenced by add_revocation().

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◆ add_revocation()

static void add_revocation ( void *  cls,
const struct GNUNET_SETU_Element element,
uint64_t  current_size,
enum GNUNET_SETU_Status  status 
)
static

Callback for set operation results.

Called for each element in the result set. Each element contains a revocation, which we should validate and then add to our revocation list (and set).

Parameters
clsclosure
elementa result element, only valid if status is #GNUNET_SETU_STATUS_OK
current_sizecurrent set size
statussee enum GNUNET_SETU_Status

Definition at line 487 of file gnunet-service-revocation.c.

491 {
492  struct PeerEntry *peer_entry = cls;
493  const struct RevokeMessage *rm;
494 
495  switch (status)
496  {
498  if (element->size != sizeof(struct RevokeMessage))
499  {
500  GNUNET_break_op (0);
501  return;
502  }
504  {
506  gettext_noop (
507  "# unsupported revocations received via set union"),
508  1,
509  GNUNET_NO);
510  return;
511  }
512  rm = element->data;
513  (void) handle_p2p_revoke (NULL,
514  rm);
516  gettext_noop (
517  "# revocation messages received via set union"),
518  1, GNUNET_NO);
519  break;
522  _ ("Error computing revocation set union with %s\n"),
523  GNUNET_i2s (&peer_entry->id));
524  peer_entry->so = NULL;
526  gettext_noop ("# revocation set unions failed"),
527  1,
528  GNUNET_NO);
529  break;
531  peer_entry->so = NULL;
533  gettext_noop (
534  "# revocation set unions completed"),
535  1,
536  GNUNET_NO);
537  break;
538  default:
539  GNUNET_break (0);
540  break;
541  }
542 }
#define gettext_noop(String)
Definition: gettext.h:69
uint16_t status
See PRISM_STATUS_*-constants.
static struct GNUNET_STATISTICS_Handle * stats
Handle to the statistics service.
static void handle_p2p_revoke(void *cls, const struct RevokeMessage *rm)
Core handler for flooded revocation messages.
@ GNUNET_ERROR_TYPE_WARNING
@ GNUNET_SETU_STATUS_DONE
Success, all elements have been sent (and received).
@ GNUNET_SETU_STATUS_FAILURE
The other peer refused to do the operation with us, or something went wrong.
@ GNUNET_SETU_STATUS_ADD_LOCAL
Element should be added to the result set of the local peer, i.e.
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
#define _(String)
GNU gettext support macro.
Definition: platform.h:177
uint16_t element_type
Application-specific element type.
uint16_t size
Number of bytes in the buffer pointed to by data.
const void * data
Actual data of the element.
struct GNUNET_SETU_OperationHandle * so
Handle to active set union operation (over revocation sets).

References _, GNUNET_SETU_Element::data, GNUNET_SETU_Element::element_type, gettext_noop, GNUNET_BLOCK_TYPE_REVOCATION, GNUNET_break, GNUNET_break_op, GNUNET_ERROR_TYPE_WARNING, GNUNET_i2s(), GNUNET_log, GNUNET_NO, GNUNET_SETU_STATUS_ADD_LOCAL, GNUNET_SETU_STATUS_DONE, GNUNET_SETU_STATUS_FAILURE, GNUNET_STATISTICS_update(), handle_p2p_revoke(), PeerEntry::id, GNUNET_SETU_Element::size, PeerEntry::so, stats, and status.

Referenced by handle_revocation_union_request().

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◆ transmit_task_cb()

static void transmit_task_cb ( void *  cls)
static

The timeout for performing the set union has expired, run the set operation on the revocation certificates.

Parameters
clsNULL

Definition at line 552 of file gnunet-service-revocation.c.

553 {
554  struct PeerEntry *peer_entry = cls;
555 
557  "Starting set exchange with peer `%s'\n",
558  GNUNET_i2s (&peer_entry->id));
559  peer_entry->transmit_task = NULL;
560  GNUNET_assert (NULL == peer_entry->so);
561  peer_entry->so = GNUNET_SETU_prepare (&peer_entry->id,
563  NULL,
564  (struct GNUNET_SETU_Option[]) { { 0 } },
566  peer_entry);
567  if (GNUNET_OK !=
568  GNUNET_SETU_commit (peer_entry->so,
570  {
572  _ ("SET service crashed, terminating revocation service\n"));
574  return;
575  }
576 }
static struct GNUNET_HashCode revocation_set_union_app_id
Our application ID for set union operations.
static void add_revocation(void *cls, const struct GNUNET_SETU_Element *element, uint64_t current_size, enum GNUNET_SETU_Status status)
Callback for set operation results.
void GNUNET_SCHEDULER_shutdown(void)
Request the shutdown of a scheduler.
Definition: scheduler.c:533
struct GNUNET_SETU_OperationHandle * GNUNET_SETU_prepare(const struct GNUNET_PeerIdentity *other_peer, const struct GNUNET_HashCode *app_id, const struct GNUNET_MessageHeader *context_msg, const struct GNUNET_SETU_Option options[], GNUNET_SETU_ResultIterator result_cb, void *result_cls)
Prepare a set operation to be evaluated with another peer.
Definition: setu_api.c:509
int GNUNET_SETU_commit(struct GNUNET_SETU_OperationHandle *oh, struct GNUNET_SETU_Handle *set)
Commit a set to be used with a set operation.
Definition: setu_api.c:877
Option for set operations.
struct GNUNET_SCHEDULER_Task * transmit_task
Tasked used to trigger the set union operation.

References GNUNET_assert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_i2s(), GNUNET_log, GNUNET_SETU_prepare(), PeerEntry::id, revocation_set_union_app_id, PeerEntry::so, and PeerEntry::transmit_task.

Referenced by handle_core_connect().

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◆ handle_core_connect()

static void* handle_core_connect ( void *  cls,
const struct GNUNET_PeerIdentity peer,
struct GNUNET_MQ_Handle mq 
)
static

Method called whenever a peer connects.

Sets up the PeerEntry and schedules the initial revocation set exchange with this peer.

Parameters
clsclosure
peerpeer identity this notification is about

Definition at line 587 of file gnunet-service-revocation.c.

590 {
591  struct PeerEntry *peer_entry;
592  struct GNUNET_HashCode my_hash;
593  struct GNUNET_HashCode peer_hash;
594 
595  if (0 == GNUNET_memcmp (peer,
596  &my_identity))
597  {
598  return NULL;
599  }
600 
602  "Peer `%s' connected to us\n",
603  GNUNET_i2s (peer));
605  "# peers connected",
606  1,
607  GNUNET_NO);
609  peer);
610  if (NULL != peer_entry)
611  {
612  /* This can happen if "core"'s notification is a tad late
613  and CADET+SET were faster and already produced a
614  #handle_revocation_union_request() for us to deal
615  with. This should be rare, but isn't impossible. */
616  peer_entry->mq = mq;
617  return peer_entry;
618  }
619  peer_entry = new_peer_entry (peer);
620  peer_entry->mq = mq;
622  sizeof(my_identity),
623  &my_hash);
625  sizeof(*peer),
626  &peer_hash);
627  if (0 < GNUNET_CRYPTO_hash_cmp (&my_hash,
628  &peer_hash))
629  {
631  "Starting SET operation with peer `%s'\n",
632  GNUNET_i2s (peer));
633  peer_entry->transmit_task =
636  peer_entry);
637  }
638  return peer_entry;
639 }
struct GNUNET_MQ_Handle * mq
Definition: 003.c:5
static void transmit_task_cb(void *cls)
The timeout for performing the set union has expired, run the set operation on the revocation certifi...
static struct GNUNET_PeerIdentity my_identity
The peer identity of this peer.
static struct PeerEntry * new_peer_entry(const struct GNUNET_PeerIdentity *peer)
Create a new PeerEntry and add it to the peers multipeermap.
int GNUNET_CRYPTO_hash_cmp(const struct GNUNET_HashCode *h1, const struct GNUNET_HashCode *h2)
Compare function for HashCodes, producing a total ordering of all hashcodes.
Definition: crypto_hash.c:220
void * GNUNET_CONTAINER_multipeermap_get(const struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key)
Given a key find a value in the map matching the key.
#define GNUNET_memcmp(a, b)
Compare memory in a and b, where both must be of the same pointer type.
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:1254
#define GNUNET_TIME_UNIT_SECONDS
One second.

References GNUNET_CONTAINER_multipeermap_get(), GNUNET_CRYPTO_hash(), GNUNET_CRYPTO_hash_cmp(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_i2s(), GNUNET_log, GNUNET_memcmp, GNUNET_NO, GNUNET_SCHEDULER_add_delayed(), GNUNET_STATISTICS_update(), GNUNET_TIME_UNIT_SECONDS, mq, PeerEntry::mq, my_identity, new_peer_entry(), peer, peers, stats, PeerEntry::transmit_task, and transmit_task_cb().

Referenced by run().

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◆ handle_core_disconnect()

static void handle_core_disconnect ( void *  cls,
const struct GNUNET_PeerIdentity peer,
void *  internal_cls 
)
static

Method called whenever a peer disconnects.

Deletes the PeerEntry and cancels any pending transmission requests to that peer.

Parameters
clsclosure
peerpeer identity this notification is about
internal_clsour struct PeerEntry for this peer

Definition at line 651 of file gnunet-service-revocation.c.

654 {
655  struct PeerEntry *peer_entry = internal_cls;
656 
657  if (0 == GNUNET_memcmp (peer,
658  &my_identity))
659  return;
660  GNUNET_assert (NULL != peer_entry);
662  "Peer `%s' disconnected from us\n",
663  GNUNET_i2s (peer));
666  peer,
667  peer_entry));
668  if (NULL != peer_entry->transmit_task)
669  {
671  peer_entry->transmit_task = NULL;
672  }
673  if (NULL != peer_entry->so)
674  {
675  GNUNET_SETU_operation_cancel (peer_entry->so);
676  peer_entry->so = NULL;
677  }
678  GNUNET_free (peer_entry);
680  "# peers connected",
681  -1,
682  GNUNET_NO);
683 }
enum GNUNET_GenericReturnValue GNUNET_CONTAINER_multipeermap_remove(struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key, const void *value)
Remove the given key-value pair from the map.
#define GNUNET_free(ptr)
Wrapper around free.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:957
void GNUNET_SETU_operation_cancel(struct GNUNET_SETU_OperationHandle *oh)
Cancel the given set operation.
Definition: setu_api.c:320

References GNUNET_assert, GNUNET_CONTAINER_multipeermap_remove(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_i2s(), GNUNET_log, GNUNET_memcmp, GNUNET_NO, GNUNET_SCHEDULER_cancel(), GNUNET_SETU_operation_cancel(), GNUNET_STATISTICS_update(), GNUNET_YES, my_identity, peer, peers, PeerEntry::so, stats, and PeerEntry::transmit_task.

Referenced by run().

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◆ free_entry()

static int free_entry ( void *  cls,
const struct GNUNET_HashCode key,
void *  value 
)
static

Free all values in a hash map.

Parameters
clsNULL
keythe key
valuevalue to free
Returns
GNUNET_OK (continue to iterate)

Definition at line 695 of file gnunet-service-revocation.c.

698 {
699  GNUNET_free (value);
700  return GNUNET_OK;
701 }

References GNUNET_free, GNUNET_OK, and value.

Referenced by shutdown_task().

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◆ shutdown_task()

static void shutdown_task ( void *  cls)
static

Task run during shutdown.

Parameters
clsunused

Definition at line 710 of file gnunet-service-revocation.c.

711 {
712  if (NULL != revocation_set)
713  {
715  revocation_set = NULL;
716  }
717  if (NULL != revocation_union_listen_handle)
718  {
721  }
722  if (NULL != core_api)
723  {
725  core_api = NULL;
726  }
727  if (NULL != stats)
728  {
730  stats = NULL;
731  }
732  if (NULL != peers)
733  {
735  peers = NULL;
736  }
737  if (NULL != revocation_db)
738  {
740  revocation_db = NULL;
741  }
743  &free_entry,
744  NULL);
746 }
static struct GNUNET_SETU_ListenHandle * revocation_union_listen_handle
Handle for us listening to incoming revocation set union requests.
static int free_entry(void *cls, const struct GNUNET_HashCode *key, void *value)
Free all values in a hash map.
static struct GNUNET_CORE_Handle * core_api
Handle to the core service (for flooding)
void GNUNET_CORE_disconnect(struct GNUNET_CORE_Handle *handle)
Disconnect from the core service.
Definition: core_api.c:730
enum GNUNET_GenericReturnValue GNUNET_DISK_file_close(struct GNUNET_DISK_FileHandle *h)
Close an open file.
Definition: disk.c:1306
void GNUNET_CONTAINER_multipeermap_destroy(struct GNUNET_CONTAINER_MultiPeerMap *map)
Destroy a hash map.
int GNUNET_CONTAINER_multihashmap_iterate(struct GNUNET_CONTAINER_MultiHashMap *map, GNUNET_CONTAINER_MulitHashMapIteratorCallback it, void *it_cls)
Iterate over all entries in the map.
void GNUNET_CONTAINER_multihashmap_destroy(struct GNUNET_CONTAINER_MultiHashMap *map)
Destroy a hash map.
void GNUNET_SETU_destroy(struct GNUNET_SETU_Handle *set)
Destroy the set handle, and free all associated resources.
Definition: setu_api.c:471
void GNUNET_SETU_listen_cancel(struct GNUNET_SETU_ListenHandle *lh)
Cancel the given listen operation.
Definition: setu_api.c:761
void GNUNET_STATISTICS_destroy(struct GNUNET_STATISTICS_Handle *h, int sync_first)
Destroy a handle (free all state associated with it).

References core_api, free_entry(), GNUNET_CONTAINER_multihashmap_destroy(), GNUNET_CONTAINER_multihashmap_iterate(), GNUNET_CONTAINER_multipeermap_destroy(), GNUNET_CORE_disconnect(), GNUNET_DISK_file_close(), GNUNET_NO, GNUNET_SETU_destroy(), GNUNET_SETU_listen_cancel(), GNUNET_STATISTICS_destroy(), peers, revocation_db, revocation_map, revocation_set, revocation_union_listen_handle, and stats.

Referenced by run().

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◆ core_init()

static void core_init ( void *  cls,
const struct GNUNET_PeerIdentity identity 
)
static

Called on core init/fail.

Parameters
clsservice closure
identitythe public identity of this peer

Definition at line 756 of file gnunet-service-revocation.c.

758 {
759  if (NULL == identity)
760  {
762  "Connection to core FAILED!\n");
764  return;
765  }
767 }
static struct GNUNET_IDENTITY_Handle * identity
Which namespace do we publish to? NULL if we do not publish to a namespace.

References GNUNET_ERROR_TYPE_ERROR, GNUNET_log, GNUNET_SCHEDULER_shutdown(), identity, and my_identity.

Referenced by run().

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◆ handle_revocation_union_request()

static void handle_revocation_union_request ( void *  cls,
const struct GNUNET_PeerIdentity other_peer,
const struct GNUNET_MessageHeader context_msg,
struct GNUNET_SETU_Request request 
)
static

Called when another peer wants to do a set operation with the local peer.

If a listen error occurs, the 'request' is NULL.

Parameters
clsclosure
other_peerthe other peer
context_msgmessage with application specific information from the other peer
requestrequest from the other peer (never NULL), use GNUNET_SETU_accept() to accept it, otherwise the request will be refused Note that we can't just return value from the listen callback, as it is also necessary to specify the set we want to do the operation with, which sometimes can be derived from the context message. It's necessary to specify the timeout.

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

790 {
791  struct PeerEntry *peer_entry;
792 
793  if (NULL == request)
794  {
795  GNUNET_break (0);
796  return;
797  }
799  "Received set exchange request from peer `%s'\n",
800  GNUNET_i2s (other_peer));
802  other_peer);
803  if (NULL == peer_entry)
804  {
805  peer_entry = new_peer_entry (other_peer);
806  }
807  if (NULL != peer_entry->so)
808  {
809  GNUNET_break_op (0);
810  return;
811  }
812  peer_entry->so = GNUNET_SETU_accept (request,
813  (struct GNUNET_SETU_Option[]) { { 0 } },
815  peer_entry);
816  if (GNUNET_OK !=
817  GNUNET_SETU_commit (peer_entry->so,
819  {
820  GNUNET_break (0);
822  return;
823  }
824 }
static struct GNUNET_VPN_RedirectionRequest * request
Opaque redirection request handle.
Definition: gnunet-vpn.c:41
struct GNUNET_SETU_OperationHandle * GNUNET_SETU_accept(struct GNUNET_SETU_Request *request, const struct GNUNET_SETU_Option options[], GNUNET_SETU_ResultIterator result_cb, void *result_cls)
Accept a request we got via GNUNET_SETU_listen().
Definition: setu_api.c:795

References add_revocation(), GNUNET_break, GNUNET_break_op, GNUNET_CONTAINER_multipeermap_get(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_i2s(), GNUNET_log, GNUNET_OK, GNUNET_SCHEDULER_shutdown(), GNUNET_SETU_accept(), GNUNET_SETU_commit(), new_peer_entry(), peers, request, revocation_set, and PeerEntry::so.

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

Handle network size estimate clients.

Parameters
clsclosure
serverthe initialized server
cconfiguration to use

Definition at line 835 of file gnunet-service-revocation.c.

838 {
839  struct GNUNET_MQ_MessageHandler core_handlers[] = {
840  GNUNET_MQ_hd_var_size (p2p_revoke,
842  struct RevokeMessage,
843  NULL),
845  };
846  char *fn;
847  uint64_t left;
848  struct RevokeMessage *rm;
849  struct GNUNET_HashCode hc;
850  const struct GNUNET_IDENTITY_PublicKey *pk;
851 
852  GNUNET_CRYPTO_hash ("revocation-set-union-application-id",
853  strlen ("revocation-set-union-application-id"),
855  if (GNUNET_OK !=
857  "REVOCATION",
858  "DATABASE",
859  &fn))
860  {
862  "REVOCATION",
863  "DATABASE");
865  return;
866  }
867  cfg = c;
869  GNUNET_NO);
870  if (GNUNET_OK !=
872  "REVOCATION",
873  "WORKBITS",
875  {
877  "REVOCATION",
878  "WORKBITS");
880  GNUNET_free (fn);
881  return;
882  }
883  if (revocation_work_required >= sizeof(struct GNUNET_HashCode) * 8)
884  {
886  "REVOCATION",
887  "WORKBITS",
888  _ ("Value is too large.\n"));
890  GNUNET_free (fn);
891  return;
892  }
893  if (GNUNET_OK !=
895  "REVOCATION",
896  "EPOCH_DURATION",
897  &epoch_duration))
898  {
900  "REVOCATION",
901  "EPOCH_DURATION");
903  GNUNET_free (fn);
904  return;
905  }
906 
912  NULL);
920  if (NULL == revocation_db)
921  {
923  "REVOCATION",
924  "DATABASE",
925  _ ("Could not open revocation database file!"));
927  GNUNET_free (fn);
928  return;
929  }
930  if (GNUNET_OK !=
932  left = 0;
933  while (left > sizeof(struct RevokeMessage))
934  {
935  rm = GNUNET_new (struct RevokeMessage);
936  if (sizeof(struct RevokeMessage) !=
938  rm,
939  sizeof(struct RevokeMessage)))
940  {
942  "read",
943  fn);
944  GNUNET_free (rm);
946  GNUNET_free (fn);
947  return;
948  }
949  struct GNUNET_REVOCATION_PowP *pow = (struct
950  GNUNET_REVOCATION_PowP *) &rm[1];
951  ssize_t ksize;
952  pk = (const struct GNUNET_IDENTITY_PublicKey *) &pow[1];
954  if (0 > ksize)
955  {
956  GNUNET_break_op (0);
957  GNUNET_free (rm);
958  GNUNET_free (fn);
959  return;
960  }
962  ksize,
963  &hc);
966  &hc,
967  rm,
969  }
970  GNUNET_free (fn);
971 
973  NULL);
975  GNUNET_YES);
976  /* Connect to core service and register core handlers */
977  core_api = GNUNET_CORE_connect (cfg, /* Main configuration */
978  NULL, /* Closure passed to functions */
979  &core_init, /* Call core_init once connected */
980  &handle_core_connect, /* Handle connects */
981  &handle_core_disconnect, /* Handle disconnects */
982  core_handlers); /* Register these handlers */
983  if (NULL == core_api)
984  {
986  return;
987  }
988  stats = GNUNET_STATISTICS_create ("revocation",
989  cfg);
990 }
static void core_init(void *cls, const struct GNUNET_PeerIdentity *identity)
Called on core init/fail.
static const struct GNUNET_CONFIGURATION_Handle * cfg
Handle to our current configuration.
static void shutdown_task(void *cls)
Task run during shutdown.
static void handle_core_disconnect(void *cls, const struct GNUNET_PeerIdentity *peer, void *internal_cls)
Method called whenever a peer disconnects.
static void * handle_core_connect(void *cls, const struct GNUNET_PeerIdentity *peer, struct GNUNET_MQ_Handle *mq)
Method called whenever a peer connects.
static void handle_revocation_union_request(void *cls, const struct GNUNET_PeerIdentity *other_peer, const struct GNUNET_MessageHeader *context_msg, struct GNUNET_SETU_Request *request)
Called when another peer wants to do a set operation with the local peer.
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.
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_CORE_Handle * GNUNET_CORE_connect(const struct GNUNET_CONFIGURATION_Handle *cfg, void *cls, GNUNET_CORE_StartupCallback init, GNUNET_CORE_ConnectEventHandler connects, GNUNET_CORE_DisconnectEventHandler disconnects, const struct GNUNET_MQ_MessageHandler *handlers)
Connect to the core service.
Definition: core_api.c:692
struct GNUNET_DISK_FileHandle * GNUNET_DISK_file_open(const char *fn, enum GNUNET_DISK_OpenFlags flags, enum GNUNET_DISK_AccessPermissions perm)
Open a file.
Definition: disk.c:1235
enum GNUNET_GenericReturnValue GNUNET_DISK_file_size(const char *filename, uint64_t *size, int include_symbolic_links, int single_file_mode)
Get the size of the file (or directory) of the given file (in bytes).
Definition: disk.c:222
ssize_t GNUNET_DISK_file_read(const struct GNUNET_DISK_FileHandle *h, void *result, size_t len)
Read the contents of a binary file into a buffer.
Definition: disk.c:622
@ GNUNET_DISK_OPEN_CREATE
Create file if it doesn't exist.
@ GNUNET_DISK_OPEN_READWRITE
Open the file for both reading and writing.
@ GNUNET_DISK_PERM_USER_READ
Owner can read.
@ GNUNET_DISK_PERM_GROUP_READ
Group can read.
@ GNUNET_DISK_PERM_USER_WRITE
Owner can write.
@ GNUNET_DISK_PERM_OTHER_READ
Everybody can read.
struct GNUNET_CONTAINER_MultiHashMap * GNUNET_CONTAINER_multihashmap_create(unsigned int len, int do_not_copy_keys)
Create a multi hash map.
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).
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.
void GNUNET_log_config_missing(enum GNUNET_ErrorType kind, const char *section, const char *option)
Log error message about missing configuration option.
#define GNUNET_log_strerror_file(level, cmd, filename)
Log an error message at log-level 'level' that indicates a failure of the command 'cmd' with the mess...
#define GNUNET_MQ_handler_end()
End-marker for the handlers array.
#define GNUNET_MQ_hd_var_size(name, code, str, ctx)
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:1316
struct GNUNET_SETU_Handle * GNUNET_SETU_create(const struct GNUNET_CONFIGURATION_Handle *cfg)
Create an empty set, supporting the specified operation.
Definition: setu_api.c:384
struct GNUNET_SETU_ListenHandle * GNUNET_SETU_listen(const struct GNUNET_CONFIGURATION_Handle *cfg, const struct GNUNET_HashCode *app_id, GNUNET_SETU_ListenCallback listen_cb, void *listen_cls)
Wait for set operation requests for the given application ID.
Definition: setu_api.c:729
struct GNUNET_STATISTICS_Handle * GNUNET_STATISTICS_create(const char *subsystem, const struct GNUNET_CONFIGURATION_Handle *cfg)
Get handle for the statistics service.
Message handler for a specific message type.

References _, cfg, core_api, core_init(), epoch_duration, GNUNET_break, GNUNET_break_op, GNUNET_CONFIGURATION_get_value_filename(), GNUNET_CONFIGURATION_get_value_number(), GNUNET_CONFIGURATION_get_value_time(), GNUNET_CONTAINER_multihashmap_create(), GNUNET_CONTAINER_multihashmap_put(), GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY, GNUNET_CONTAINER_multipeermap_create(), GNUNET_CORE_connect(), GNUNET_CRYPTO_hash(), GNUNET_DISK_file_open(), GNUNET_DISK_file_read(), GNUNET_DISK_file_size(), GNUNET_DISK_OPEN_CREATE, GNUNET_DISK_OPEN_READWRITE, GNUNET_DISK_PERM_GROUP_READ, GNUNET_DISK_PERM_OTHER_READ, GNUNET_DISK_PERM_USER_READ, GNUNET_DISK_PERM_USER_WRITE, GNUNET_ERROR_TYPE_ERROR, GNUNET_free, GNUNET_IDENTITY_key_get_length(), GNUNET_log_config_invalid(), GNUNET_log_config_missing(), GNUNET_log_strerror_file, GNUNET_MESSAGE_TYPE_REVOCATION_REVOKE, GNUNET_MQ_handler_end, GNUNET_MQ_hd_var_size, GNUNET_new, GNUNET_NO, GNUNET_OK, GNUNET_SCHEDULER_add_shutdown(), GNUNET_SCHEDULER_shutdown(), GNUNET_SETU_create(), GNUNET_SETU_listen(), GNUNET_STATISTICS_create(), GNUNET_YES, handle_core_connect(), handle_core_disconnect(), handle_revocation_union_request(), peers, pk, GNUNET_REVOCATION_PowP::pow, revocation_db, revocation_map, revocation_set, revocation_set_union_app_id, revocation_union_listen_handle, revocation_work_required, shutdown_task(), and stats.

Here is the call graph for this function:

◆ GNUNET_SERVICE_MAIN()

GNUNET_SERVICE_MAIN ( "revocation"  ,
GNUNET_SERVICE_OPTION_NONE  ,
run,
client_connect_cb,
client_disconnect_cb,
NULL  ,
GNUNET_MQ_hd_fixed_size(query_message, GNUNET_MESSAGE_TYPE_REVOCATION_QUERY, struct QueryMessage, NULL)  ,
GNUNET_MQ_hd_var_size(revoke_message, GNUNET_MESSAGE_TYPE_REVOCATION_REVOKE, struct RevokeMessage, NULL)  ,
GNUNET_MQ_handler_end()   
)

Define "main" method using service macro.

Variable Documentation

◆ revocation_set

struct GNUNET_SETU_Handle* revocation_set
static

Set from all revocations known to us.

Definition at line 83 of file gnunet-service-revocation.c.

Referenced by handle_revocation_union_request(), run(), and shutdown_task().

◆ revocation_map

struct GNUNET_CONTAINER_MultiHashMap* revocation_map
static

Hash map with all revoked keys, maps the hash of the public key to the respective struct RevokeMessage.

Definition at line 89 of file gnunet-service-revocation.c.

Referenced by do_flood(), run(), and shutdown_task().

◆ cfg

const struct GNUNET_CONFIGURATION_Handle* cfg
static

Handle to our current configuration.

Definition at line 94 of file gnunet-service-revocation.c.

Referenced by run().

◆ stats

struct GNUNET_STATISTICS_Handle* stats
static

Handle to the statistics service.

Definition at line 99 of file gnunet-service-revocation.c.

Referenced by add_revocation(), handle_core_connect(), handle_core_disconnect(), run(), and shutdown_task().

◆ core_api

struct GNUNET_CORE_Handle* core_api
static

Handle to the core service (for flooding)

Definition at line 104 of file gnunet-service-revocation.c.

Referenced by run(), and shutdown_task().

◆ peers

struct GNUNET_CONTAINER_MultiPeerMap* peers
static

◆ my_identity

struct GNUNET_PeerIdentity my_identity
static

The peer identity of this peer.

Definition at line 109 of file gnunet-service-revocation.c.

Referenced by core_init(), handle_core_connect(), and handle_core_disconnect().

◆ revocation_db

struct GNUNET_DISK_FileHandle* revocation_db
static

File handle for the revocation database.

Definition at line 119 of file gnunet-service-revocation.c.

Referenced by run(), and shutdown_task().

◆ revocation_union_listen_handle

struct GNUNET_SETU_ListenHandle* revocation_union_listen_handle
static

Handle for us listening to incoming revocation set union requests.

Definition at line 124 of file gnunet-service-revocation.c.

Referenced by run(), and shutdown_task().

◆ revocation_work_required

unsigned long long revocation_work_required
static

Amount of work required (W-bit collisions) for REVOCATION proofs, in collision-bits.

Definition at line 129 of file gnunet-service-revocation.c.

Referenced by run().

◆ epoch_duration

struct GNUNET_TIME_Relative epoch_duration
static

Length of an expiration expoch.

Definition at line 129 of file gnunet-service-revocation.c.

Referenced by run().

◆ revocation_set_union_app_id

struct GNUNET_HashCode revocation_set_union_app_id
static

Our application ID for set union operations.

Must be the same for all (compatible) peers.

Definition at line 129 of file gnunet-service-revocation.c.

Referenced by run(), and transmit_task_cb().