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messenger_api_handle.h File Reference
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Data Structures

struct  GNUNET_MESSENGER_Handle
 

Functions

struct GNUNET_MESSENGER_Handlecreate_handle (const struct GNUNET_CONFIGURATION_Handle *cfg, GNUNET_MESSENGER_MessageCallback msg_callback, void *msg_cls)
 Creates and allocates a new handle using a given configuration and a custom message callback with a given closure for the client API.
 
void destroy_handle (struct GNUNET_MESSENGER_Handle *handle)
 Destroys a handle and frees its memory fully from the client API.
 
void set_handle_name (struct GNUNET_MESSENGER_Handle *handle, const char *name)
 Sets the name of a handle to a specific name.
 
const char * get_handle_name (const struct GNUNET_MESSENGER_Handle *handle)
 Returns the current name of a given handle or NULL if no valid name was assigned yet.
 
void set_handle_key (struct GNUNET_MESSENGER_Handle *handle, const struct GNUNET_CRYPTO_PrivateKey *key)
 Sets the keypair of a given handle to the keypair of a specific private key.
 
const struct GNUNET_CRYPTO_PrivateKeyget_handle_key (const struct GNUNET_MESSENGER_Handle *handle)
 Returns the private key of a given handle.
 
const struct GNUNET_CRYPTO_PublicKeyget_handle_pubkey (const struct GNUNET_MESSENGER_Handle *handle)
 Returns the public key of a given handle.
 
struct GNUNET_MESSENGER_ContactStoreget_handle_contact_store (struct GNUNET_MESSENGER_Handle *handle)
 Returns the used contact store of a given handle.
 
struct GNUNET_MESSENGER_Contactget_handle_contact (struct GNUNET_MESSENGER_Handle *handle, const struct GNUNET_HashCode *key)
 Returns the contact of a given handle in a room identified by a given key.
 
void open_handle_room (struct GNUNET_MESSENGER_Handle *handle, const struct GNUNET_HashCode *key)
 Marks a room known to a handle identified by a given key as open.
 
void entry_handle_room_at (struct GNUNET_MESSENGER_Handle *handle, const struct GNUNET_PeerIdentity *door, const struct GNUNET_HashCode *key)
 Adds a tunnel for a room known to a handle identified by a given key to a list of opened connections.
 
void close_handle_room (struct GNUNET_MESSENGER_Handle *handle, const struct GNUNET_HashCode *key)
 Destroys and so implicitly closes a room known to a handle identified by a given key.
 
struct GNUNET_MESSENGER_Roomget_handle_room (struct GNUNET_MESSENGER_Handle *handle, const struct GNUNET_HashCode *key)
 Returns the room known to a handle identified by a given key.
 
enum GNUNET_GenericReturnValue store_handle_epoch_key (const struct GNUNET_MESSENGER_Handle *handle, const struct GNUNET_HashCode *key, const struct GNUNET_HashCode *hash, const struct GNUNET_ShortHashCode *identifier, const struct GNUNET_CRYPTO_SymmetricSessionKey *shared_key, uint32_t flags, GNUNET_NAMESTORE_ContinuationWithStatus cont, void *cont_cls, struct GNUNET_NAMESTORE_QueueEntry **query)
 Stores/deletes a shared_key for a given room from a handle identified by its key in an epoch with certain hash using a specific identifier for this epoch key.
 

Function Documentation

◆ create_handle()

struct GNUNET_MESSENGER_Handle * create_handle ( const struct GNUNET_CONFIGURATION_Handle cfg,
GNUNET_MESSENGER_MessageCallback  msg_callback,
void *  msg_cls 
)

Creates and allocates a new handle using a given configuration and a custom message callback with a given closure for the client API.

Parameters
[in]cfgConfiguration
[in]msg_callbackMessage callback
[in,out]msg_clsClosure
Returns
New handle

Definition at line 35 of file messenger_api_handle.c.

38{
40
42
44
45 handle->config = config;
46 handle->mq = NULL;
47
49 handle->config,
51 "MESSENGER_GROUP_KEYS");
52
53 if (handle->config)
54 handle->namestore = GNUNET_NAMESTORE_connect (handle->config);
55
56 handle->msg_callback = msg_callback;
57 handle->msg_cls = msg_cls;
58
59 handle->name = NULL;
60 handle->key = NULL;
61 handle->pubkey = NULL;
62
63 handle->reconnect_time = GNUNET_TIME_relative_get_zero_ ();
64 handle->reconnect_task = NULL;
65
66 handle->key_monitor = NULL;
67
69
71
72 return handle;
73}
const struct GNUNET_CONFIGURATION_Handle * config
static struct GNUNET_VPN_Handle * handle
Handle to vpn service.
Definition gnunet-vpn.c:35
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_CONTAINER_MultiHashMap * GNUNET_CONTAINER_multihashmap_create(unsigned int len, int do_not_copy_keys)
Create a multi hash map.
@ GNUNET_NO
#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.
#define GNUNET_MESSENGER_SERVICE_NAME
Identifier of GNUnet MESSENGER Service.
struct GNUNET_NAMESTORE_Handle * GNUNET_NAMESTORE_connect(const struct GNUNET_CONFIGURATION_Handle *cfg)
Connect to the namestore service.
struct GNUNET_TIME_Relative GNUNET_TIME_relative_get_zero_(void)
Return relative time of 0ms.
Definition time.c:133
void init_contact_store(struct GNUNET_MESSENGER_ContactStore *store)
Initializes a contact store as fully empty.
struct GNUNET_MESSENGER_ContactStore * get_handle_contact_store(struct GNUNET_MESSENGER_Handle *handle)
Returns the used contact store of a given handle.
GNUNET_MESSENGER_MessageCallback msg_callback
struct GNUNET_MQ_Handle * mq
Connection to VPN service.
Definition vpn_api.c:44

References config, get_handle_contact_store(), GNUNET_assert, GNUNET_CONFIGURATION_get_value_yesno(), GNUNET_CONTAINER_multihashmap_create(), GNUNET_MESSENGER_SERVICE_NAME, GNUNET_NAMESTORE_connect(), GNUNET_new, GNUNET_NO, GNUNET_TIME_relative_get_zero_(), handle, init_contact_store(), GNUNET_VPN_Handle::mq, GNUNET_MESSENGER_Handle::msg_callback, and GNUNET_MESSENGER_Handle::msg_cls.

Referenced by GNUNET_MESSENGER_connect().

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◆ destroy_handle()

void destroy_handle ( struct GNUNET_MESSENGER_Handle handle)

Destroys a handle and frees its memory fully from the client API.

Parameters
[in,out]handleHandle

Definition at line 93 of file messenger_api_handle.c.

94{
96
98
99 if (handle->rooms)
100 {
102 handle->rooms, iterate_destroy_room, NULL);
103
105 }
106
107 if (handle->key_monitor)
109
110 if (handle->reconnect_task)
111 GNUNET_SCHEDULER_cancel (handle->reconnect_task);
112
113 if (handle->mq)
115
116 if (handle->namestore)
118
119 if (handle->name)
120 GNUNET_free (handle->name);
121
122 if (handle->key)
123 GNUNET_free (handle->key);
124
125 if (handle->pubkey)
126 GNUNET_free (handle->pubkey);
127
129}
int 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_multihashmap_destroy(struct GNUNET_CONTAINER_MultiHashMap *map)
Destroy a hash map.
#define GNUNET_free(ptr)
Wrapper around free.
void GNUNET_MQ_destroy(struct GNUNET_MQ_Handle *mq)
Destroy the message queue.
Definition mq.c:700
void GNUNET_NAMESTORE_disconnect(struct GNUNET_NAMESTORE_Handle *h)
Disconnect from the namestore service (and free associated resources).
void GNUNET_NAMESTORE_zone_monitor_stop(struct GNUNET_NAMESTORE_ZoneMonitor *zm)
Stop monitoring a zone for changes.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition scheduler.c:980
void clear_contact_store(struct GNUNET_MESSENGER_ContactStore *store)
Clears a contact store, wipes its content and deallocates its memory.
static enum GNUNET_GenericReturnValue iterate_destroy_room(void *cls, const struct GNUNET_HashCode *key, void *value)

References clear_contact_store(), get_handle_contact_store(), GNUNET_assert, GNUNET_CONTAINER_multihashmap_destroy(), GNUNET_CONTAINER_multihashmap_iterate(), GNUNET_free, GNUNET_MQ_destroy(), GNUNET_NAMESTORE_disconnect(), GNUNET_NAMESTORE_zone_monitor_stop(), GNUNET_SCHEDULER_cancel(), handle, iterate_destroy_room(), and GNUNET_VPN_Handle::mq.

Referenced by GNUNET_MESSENGER_connect(), and GNUNET_MESSENGER_disconnect().

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◆ set_handle_name()

void set_handle_name ( struct GNUNET_MESSENGER_Handle handle,
const char *  name 
)

Sets the name of a handle to a specific name.

Parameters
[in,out]handleHandle
[in]nameNew name

Definition at line 133 of file messenger_api_handle.c.

135{
137
138 if (handle->name)
139 GNUNET_free (handle->name);
140
141 handle->name = name ? GNUNET_strdup (name) : NULL;
142}
static char * name
Name (label) of the records to list.
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.

References GNUNET_assert, GNUNET_free, GNUNET_strdup, handle, and name.

Referenced by GNUNET_MESSENGER_connect(), and GNUNET_MESSENGER_set_name().

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◆ get_handle_name()

const char * get_handle_name ( const struct GNUNET_MESSENGER_Handle handle)

Returns the current name of a given handle or NULL if no valid name was assigned yet.

Parameters
[in]handleHandle
Returns
Name of the handle or NULL

Definition at line 146 of file messenger_api_handle.c.

147{
149
150 return handle->name;
151}

References GNUNET_assert, and handle.

Referenced by cb_key_error(), cb_key_sync(), GNUNET_MESSENGER_get_name(), handle_name_message(), iterate_send_name_to_room(), and send_message_to_room_with_key().

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◆ set_handle_key()

void set_handle_key ( struct GNUNET_MESSENGER_Handle handle,
const struct GNUNET_CRYPTO_PrivateKey key 
)

Sets the keypair of a given handle to the keypair of a specific private key.

Parameters
[in,out]handleHandle
[in]keyPrivate key or NULL

Definition at line 380 of file messenger_api_handle.c.

382{
384
385 if (handle->key_monitor)
386 {
388 handle->key_monitor = NULL;
389 }
390
391 if (! key)
392 {
393 if (handle->key)
394 GNUNET_free (handle->key);
395
396 if (handle->pubkey)
397 GNUNET_free (handle->pubkey);
398
399 handle->key = NULL;
400 handle->pubkey = NULL;
401 return;
402 }
403
404 if (! handle->key)
406
407 if (! handle->pubkey)
408 handle->pubkey = GNUNET_new (struct GNUNET_CRYPTO_PublicKey);
409
410 GNUNET_memcpy (handle->key, key, sizeof(*key));
412
413 // Resets epoch and group keys as not stored yet
415 handle->rooms, it_room_store_keys, NULL);
416
418 handle->config,
419 handle->key,
422 handle,
424 handle,
426 handle,
428}
struct GNUNET_HashCode key
The key used in the DHT.
@ GNUNET_GNSRECORD_FILTER_NONE
No filter flags set.
enum GNUNET_GenericReturnValue GNUNET_CRYPTO_key_get_public(const struct GNUNET_CRYPTO_PrivateKey *privkey, struct GNUNET_CRYPTO_PublicKey *key)
Retrieves the public key representation of a private key.
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
@ GNUNET_YES
struct GNUNET_NAMESTORE_ZoneMonitor * GNUNET_NAMESTORE_zone_monitor_start2(const struct GNUNET_CONFIGURATION_Handle *cfg, const struct GNUNET_CRYPTO_PrivateKey *zone, int iterate_first, GNUNET_SCHEDULER_TaskCallback error_cb, void *error_cb_cls, GNUNET_NAMESTORE_RecordSetMonitor monitor, void *monitor_cls, GNUNET_SCHEDULER_TaskCallback sync_cb, void *sync_cb_cls, enum GNUNET_GNSRECORD_Filter filter)
Begin monitoring a zone for changes.
static void cb_key_error(void *cls)
static enum GNUNET_GenericReturnValue it_room_store_keys(void *cls, const struct GNUNET_HashCode *key, void *value)
static void cb_key_sync(void *cls)
static void cb_key_monitor(void *cls, const struct GNUNET_CRYPTO_PrivateKey *zone, const char *label, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd, struct GNUNET_TIME_Absolute expiry)
A private key for an identity as per LSD0001.
An identity key as per LSD0001.

References cb_key_error(), cb_key_monitor(), cb_key_sync(), GNUNET_assert, GNUNET_CONTAINER_multihashmap_iterate(), GNUNET_CRYPTO_key_get_public(), GNUNET_free, GNUNET_GNSRECORD_FILTER_NONE, GNUNET_memcpy, GNUNET_NAMESTORE_zone_monitor_start2(), GNUNET_NAMESTORE_zone_monitor_stop(), GNUNET_new, GNUNET_YES, handle, it_room_store_keys(), and key.

Referenced by GNUNET_MESSENGER_connect(), and GNUNET_MESSENGER_set_key().

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◆ get_handle_key()

const struct GNUNET_CRYPTO_PrivateKey * get_handle_key ( const struct GNUNET_MESSENGER_Handle handle)

Returns the private key of a given handle.

Parameters
[in]handleHandle
Returns
Private key of the handle

Definition at line 432 of file messenger_api_handle.c.

433{
435
436 if (handle->key)
437 return handle->key;
438
440}
const struct GNUNET_CRYPTO_PrivateKey * get_anonymous_private_key(void)
Returns the private identity key of GNUNET_IDENTITY_ego_get_anonymous() without recalculating it ever...

References get_anonymous_private_key(), GNUNET_assert, and handle.

Referenced by enqueue_message_to_room(), handle_member_id(), handle_private_message(), and store_handle_epoch_key().

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◆ get_handle_pubkey()

const struct GNUNET_CRYPTO_PublicKey * get_handle_pubkey ( const struct GNUNET_MESSENGER_Handle handle)

Returns the public key of a given handle.

Parameters
[in]handleHandle
Returns
Public key of the handle

Definition at line 444 of file messenger_api_handle.c.

445{
447
448 if (handle->pubkey)
449 return handle->pubkey;
450
451 return get_anonymous_public_key ();
452}
const struct GNUNET_CRYPTO_PublicKey * get_anonymous_public_key(void)
Returns the public identity key of GNUNET_IDENTITY_ego_get_anonymous() without recalculating it every...

References get_anonymous_public_key(), GNUNET_assert, and handle.

Referenced by get_handle_contact(), GNUNET_MESSENGER_get_key(), handle_join_message(), send_enter_room(), send_message_to_room_with_key(), and send_open_room().

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◆ get_handle_contact_store()

struct GNUNET_MESSENGER_ContactStore * get_handle_contact_store ( struct GNUNET_MESSENGER_Handle handle)

Returns the used contact store of a given handle.

Parameters
[in,out]handleHandle
Returns
Contact store

Definition at line 456 of file messenger_api_handle.c.

457{
459
460 return &(handle->contact_store);
461}

References GNUNET_assert, and handle.

Referenced by create_handle(), destroy_handle(), get_handle_contact(), handle_id_message(), handle_join_message(), handle_key_message(), handle_transcript_message(), process_message_control(), and task_message_control().

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◆ get_handle_contact()

struct GNUNET_MESSENGER_Contact * get_handle_contact ( struct GNUNET_MESSENGER_Handle handle,
const struct GNUNET_HashCode key 
)

Returns the contact of a given handle in a room identified by a given key.

Parameters
[in,out]handleHandle
[in]keyKey of room
Returns
Contact

Definition at line 465 of file messenger_api_handle.c.

467{
468 struct GNUNET_MESSENGER_Room *room;
469 const struct GNUNET_ShortHashCode *contact_id;
470
471 GNUNET_assert ((handle) && (key));
472
474
475 if (! room)
476 return NULL;
477
478 contact_id = get_room_sender_id (room);
479
480 if (! contact_id)
481 return NULL;
482
483 {
485 get_context_from_member (key, contact_id, &context);
486
488 &context,
490 }
491}
static pa_context * context
Pulseaudio context.
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.
void get_context_from_member(const struct GNUNET_HashCode *key, const struct GNUNET_ShortHashCode *id, struct GNUNET_HashCode *context)
Calculates the context hash of a member in a room and returns it.
struct GNUNET_MESSENGER_Contact * get_store_contact(struct GNUNET_MESSENGER_ContactStore *store, const struct GNUNET_HashCode *context, const struct GNUNET_CRYPTO_PublicKey *pubkey)
Returns a contact using a specific public key.
const struct GNUNET_CRYPTO_PublicKey * get_handle_pubkey(const struct GNUNET_MESSENGER_Handle *handle)
Returns the public key of a given handle.
const struct GNUNET_ShortHashCode * get_room_sender_id(const struct GNUNET_MESSENGER_Room *room)
Returns the member id of the room's sender.
A 512-bit hashcode.
A 256-bit hashcode.

References context, get_context_from_member(), get_handle_contact_store(), get_handle_pubkey(), get_room_sender_id(), get_store_contact(), GNUNET_assert, GNUNET_CONTAINER_multihashmap_get(), handle, and key.

Referenced by get_room_availble_epoch_entry(), handle_appeal_message(), handle_epoch_announcement(), and handle_private_message().

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◆ open_handle_room()

void open_handle_room ( struct GNUNET_MESSENGER_Handle handle,
const struct GNUNET_HashCode key 
)

Marks a room known to a handle identified by a given key as open.

Parameters
[in,out]handleHandle
[in]keyKey of room

Definition at line 495 of file messenger_api_handle.c.

497{
498 struct GNUNET_MESSENGER_Room *room;
499
500 GNUNET_assert ((handle) && (key));
501
503
504 if (room)
505 room->opened = GNUNET_YES;
506}
enum GNUNET_GenericReturnValue opened

References GNUNET_assert, GNUNET_CONTAINER_multihashmap_get(), GNUNET_YES, handle, key, and GNUNET_MESSENGER_Room::opened.

Referenced by handle_room_open().

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◆ entry_handle_room_at()

void entry_handle_room_at ( struct GNUNET_MESSENGER_Handle handle,
const struct GNUNET_PeerIdentity door,
const struct GNUNET_HashCode key 
)

Adds a tunnel for a room known to a handle identified by a given key to a list of opened connections.

Parameters
[in,out]handleHandle
[in]doorPeer identity
[in]keyKey of room

Definition at line 510 of file messenger_api_handle.c.

513{
514 struct GNUNET_MESSENGER_Room *room;
515
516 GNUNET_assert ((handle) && (door) && (key));
517
519
520 if (room)
521 add_to_list_tunnels (&(room->entries), door, NULL);
522}
void add_to_list_tunnels(struct GNUNET_MESSENGER_ListTunnels *tunnels, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HashCode *hash)
Adds a specific peer from a tunnel to the end of the list.
struct GNUNET_MESSENGER_ListTunnels entries

References add_to_list_tunnels(), GNUNET_MESSENGER_Room::entries, GNUNET_assert, GNUNET_CONTAINER_multihashmap_get(), handle, and key.

Referenced by handle_room_entry().

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◆ close_handle_room()

void close_handle_room ( struct GNUNET_MESSENGER_Handle handle,
const struct GNUNET_HashCode key 
)

Destroys and so implicitly closes a room known to a handle identified by a given key.

Parameters
[in,out]handleHandle
[in]keyKey of room

Definition at line 526 of file messenger_api_handle.c.

528{
529 struct GNUNET_MESSENGER_Room *room;
530
531 GNUNET_assert ((handle) && (key));
532
534
536 handle->rooms, key, room)))
537 destroy_room (room);
538}
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.
void destroy_room(struct GNUNET_MESSENGER_Room *room)
Destroys a room and frees its memory fully from the client API.

References destroy_room(), GNUNET_assert, GNUNET_CONTAINER_multihashmap_get(), GNUNET_CONTAINER_multihashmap_remove(), GNUNET_YES, handle, and key.

Referenced by handle_room_close().

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◆ get_handle_room()

struct GNUNET_MESSENGER_Room * get_handle_room ( struct GNUNET_MESSENGER_Handle handle,
const struct GNUNET_HashCode key 
)

Returns the room known to a handle identified by a given key.

Parameters
[in,out]handlehandle Handle
[in]keyKey of room
Returns
Room or NULL

Definition at line 542 of file messenger_api_handle.c.

544{
545 GNUNET_assert ((handle) && (key));
546
548}

References GNUNET_assert, GNUNET_CONTAINER_multihashmap_get(), handle, and key.

Referenced by cb_key_monitor(), handle_member_id(), handle_miss_message(), handle_recv_message(), handle_room_close(), handle_room_entry(), handle_room_open(), and handle_room_sync().

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◆ store_handle_epoch_key()

enum GNUNET_GenericReturnValue store_handle_epoch_key ( const struct GNUNET_MESSENGER_Handle handle,
const struct GNUNET_HashCode key,
const struct GNUNET_HashCode hash,
const struct GNUNET_ShortHashCode identifier,
const struct GNUNET_CRYPTO_SymmetricSessionKey shared_key,
uint32_t  flags,
GNUNET_NAMESTORE_ContinuationWithStatus  cont,
void *  cont_cls,
struct GNUNET_NAMESTORE_QueueEntry **  query 
)

Stores/deletes a shared_key for a given room from a handle identified by its key in an epoch with certain hash using a specific identifier for this epoch key.

Parameters
[in]handleHandle
[in]keyRoom key
[in]hashEpoch hash
[in]identifierEpoch key identifier
[in]shared_keyShared epoch key or NULL
[in]flagsEpoch key flags
[in]contContinuation status callback or NULL
[in]cont_clsContinuation closure or NULL
[out]query
Returns
GNUNET_OK on success, otherwise GNUNET_SYSERR

Definition at line 552 of file messenger_api_handle.c.

562{
563 const struct GNUNET_CRYPTO_PrivateKey *zone;
567 char *label;
568
569 GNUNET_assert ((handle) && (key) && (hash) && (identifier) && (query));
570
571 if (! handle->namestore)
572 return GNUNET_SYSERR;
573
574 zone = get_handle_key (handle);
575
576 if (! zone)
577 return GNUNET_SYSERR;
578
580
581 memset (&data, 0, sizeof (data));
582 memset (&record, 0, sizeof (record));
583
584 if (shared_key)
585 {
588
589 if (GNUNET_YES != GNUNET_CRYPTO_kdf (&skey, sizeof (skey),
590 key, sizeof (*key),
591 zone, sizeof (*zone),
592 hash, sizeof (*hash),
593 identifier, sizeof (*identifier),
594 NULL))
595 return GNUNET_SYSERR;
596
597 GNUNET_memcpy (&(record.key), key, sizeof (record.key));
598 GNUNET_memcpy (&(record.hash), hash, sizeof (record.hash));
600 &(record.identifier),
601 identifier,
602 sizeof (record.identifier));
603
605 &iv,
606 &skey,
607 key, sizeof (*key),
608 hash, sizeof (*hash),
609 identifier, sizeof (*identifier),
610 NULL);
611
612 if (-1 == GNUNET_CRYPTO_symmetric_encrypt (shared_key,
613 sizeof (*shared_key),
614 &skey,
615 &iv,
616 &(record.shared_key)))
617 return GNUNET_SYSERR;
618
619 record.flags = flags;
620
622 data.data = &record;
623 data.data_size = sizeof (record);
624 data.expiration_time = expiration.abs_value_us;
626
627 GNUNET_CRYPTO_zero_keys (&skey, sizeof (skey));
628 }
629
630 {
631 char lower_key [9];
632 char lower_hash [9];
633 char lower_id [7];
634 const char *s;
635
636 memset (lower_key, 0, sizeof (lower_key));
637 memset (lower_hash, 0, sizeof (lower_hash));
638 memset (lower_id, 0, sizeof (lower_id));
639
640 s = GNUNET_h2s (key);
641 if (GNUNET_OK != GNUNET_STRINGS_utf8_tolower (s, lower_key))
642 GNUNET_memcpy (lower_key, s, sizeof (lower_key));
643
644 s = GNUNET_h2s (hash);
645 if (GNUNET_OK != GNUNET_STRINGS_utf8_tolower (s, lower_hash))
646 GNUNET_memcpy (lower_hash, s, sizeof (lower_hash));
647
648 s = GNUNET_sh2s (identifier);
649 if (GNUNET_OK != GNUNET_STRINGS_utf8_tolower (s, lower_id))
650 GNUNET_memcpy (lower_id, s, sizeof (lower_id));
651
653 &label,
654 "epoch_key_%s%s%s",
655 lower_key,
656 lower_hash,
657 lower_id);
658 }
659
660 if (! label)
661 return GNUNET_SYSERR;
662
663 if (*query)
665
667 "Store epoch key record with label: %s [%d]\n",
668 label,
669 shared_key? 1 : 0);
670
672 handle->namestore,
673 zone,
674 label,
675 shared_key? 1 : 0,
676 &data,
677 cont,
678 cont_cls);
679
680 GNUNET_free (label);
681 return GNUNET_OK;
682}
#define GNUNET_GNSRECORD_TYPE_MESSENGER_ROOM_EPOCH_KEY
Record type to store epoch keys from a messenger room.
static void record(void *cls, size_t data_size, const void *data)
Process recorded audio data.
static char * data
The data to insert into the dht.
static struct GNUNET_TIME_Relative expiration
User supplied expiration value.
ssize_t GNUNET_CRYPTO_symmetric_encrypt(const void *block, size_t size, const struct GNUNET_CRYPTO_SymmetricSessionKey *sessionkey, const struct GNUNET_CRYPTO_SymmetricInitializationVector *iv, void *result)
Encrypt a block using a symmetric sessionkey.
void GNUNET_CRYPTO_symmetric_derive_iv(struct GNUNET_CRYPTO_SymmetricInitializationVector *iv, const struct GNUNET_CRYPTO_SymmetricSessionKey *skey, const void *salt, size_t salt_len,...)
Derive an IV.
void GNUNET_CRYPTO_zero_keys(void *buffer, size_t length)
Zero out buffer, securely against compiler optimizations.
@ GNUNET_GNSRECORD_RF_PRIVATE
This is a private record of this peer and it should thus not be published.
enum GNUNET_GenericReturnValue GNUNET_CRYPTO_kdf(void *result, size_t out_len, const void *xts, size_t xts_len, const void *skm, size_t skm_len,...)
Derive key.
Definition crypto_kdf.c:62
#define GNUNET_log(kind,...)
@ GNUNET_OK
@ GNUNET_SYSERR
const char * GNUNET_sh2s(const struct GNUNET_ShortHashCode *shc)
Convert a short hash value to a string (for printing debug messages).
const char * GNUNET_h2s(const struct GNUNET_HashCode *hc)
Convert a hash value to a string (for printing debug messages).
@ GNUNET_ERROR_TYPE_DEBUG
int int GNUNET_asprintf(char **buf, const char *format,...) __attribute__((format(printf
Like asprintf, just portable.
struct GNUNET_NAMESTORE_QueueEntry * GNUNET_NAMESTORE_record_set_store(struct GNUNET_NAMESTORE_Handle *h, const struct GNUNET_CRYPTO_PrivateKey *pkey, const char *label, unsigned int rd_count, const struct GNUNET_GNSRECORD_Data *rd, GNUNET_NAMESTORE_ContinuationWithStatus cont, void *cont_cls)
Store an item in the namestore.
void GNUNET_NAMESTORE_cancel(struct GNUNET_NAMESTORE_QueueEntry *qe)
Cancel a namestore operation.
enum GNUNET_GenericReturnValue GNUNET_STRINGS_utf8_tolower(const char *input, char *output)
Convert the utf-8 input string to lower case.
Definition strings.c:475
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_get_forever_(void)
Return "forever".
Definition time.c:205
const struct GNUNET_CRYPTO_PrivateKey * get_handle_key(const struct GNUNET_MESSENGER_Handle *handle)
Returns the private key of a given handle.
A room epoch key record specifies an epoch key for a given room that can be identified via a given ke...
struct GNUNET_ShortHashCode identifier
The short hash identifying the epoch or group key.
struct GNUNET_CRYPTO_SymmetricSessionKey shared_key
The shared epoch or group key in the room.
struct GNUNET_HashCode hash
The hash identifying the epoch.
Time for absolute times used by GNUnet, in microseconds.

References data, expiration, get_handle_key(), GNUNET_asprintf(), GNUNET_assert, GNUNET_CRYPTO_kdf(), GNUNET_CRYPTO_symmetric_derive_iv(), GNUNET_CRYPTO_symmetric_encrypt(), GNUNET_CRYPTO_zero_keys(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_GNSRECORD_RF_PRIVATE, GNUNET_GNSRECORD_TYPE_MESSENGER_ROOM_EPOCH_KEY, GNUNET_h2s(), GNUNET_log, GNUNET_memcpy, GNUNET_NAMESTORE_cancel(), GNUNET_NAMESTORE_record_set_store(), GNUNET_OK, GNUNET_sh2s(), GNUNET_STRINGS_utf8_tolower(), GNUNET_SYSERR, GNUNET_TIME_absolute_get_forever_(), GNUNET_YES, handle, GNUNET_MESSENGER_RoomEpochKeyRecord::hash, GNUNET_MESSENGER_RoomEpochKeyRecord::identifier, key, record(), and GNUNET_MESSENGER_RoomEpochKeyRecord::shared_key.

Referenced by write_epoch_announcement_record(), and write_epoch_group_record().

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