static void
register_hashcode (struct GNUNET_HashCode *hash)
{
struct GNUNET_HashCode replicated;
struct IBF_Key key;
key = ibf_key_from_hashcode (hash);
ibf_hashcode_from_key (key, &replicated);
(void) GNUNET_CONTAINER_multihashmap_put (key_to_hashcode,
&replicated,
GNUNET_memdup (hash, sizeof *hash),
GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
}
/**
* Parses a sensor reading message struct
*
* @param msg message header received
* @param sensors multihashmap of loaded sensors
* @return sensor reading struct or NULL if error
*/
static struct ClientSensorReading *
parse_reading_message (const struct GNUNET_MessageHeader *msg,
struct GNUNET_CONTAINER_MultiHashMap *sensors)
{
uint16_t msg_size;
uint16_t value_size;
struct GNUNET_SENSOR_ValueMessage *vm;
struct GNUNET_SENSOR_SensorInfo *sensor;
struct ClientSensorReading *reading;
msg_size = ntohs (msg->size);
if (msg_size < sizeof (struct GNUNET_SENSOR_ValueMessage))
{
GNUNET_break_op (0);
return NULL;
}
vm = (struct GNUNET_SENSOR_ValueMessage *) msg;
value_size = ntohs (vm->value_size);
if ((sizeof (struct GNUNET_SENSOR_ValueMessage) + value_size) != msg_size)
{
GNUNET_break_op (0);
return NULL;
}
sensor = GNUNET_CONTAINER_multihashmap_get (sensors, &vm->sensorname_hash);
if (NULL == sensor)
{
GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
"Unknown sensor name in reading message.\n");
return NULL;
}
if ((sensor->version_minor != ntohs (vm->sensorversion_minor)) ||
(sensor->version_major != ntohs (vm->sensorversion_major)))
{
GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
"Sensor version mismatch in reading message.\n");
return NULL;
}
if (0 == strcmp (sensor->expected_datatype, "numeric") &&
sizeof (double) != value_size)
{
GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
"Invalid value size for a numerical sensor.\n");
return NULL;
}
reading = GNUNET_new (struct ClientSensorReading);
reading->sensor = sensor;
reading->timestamp = vm->timestamp;
reading->value_size = value_size;
reading->value = GNUNET_memdup (&vm[1], value_size);
return reading;
}
/**
* Store a new entry in the PEERSTORE.
* Note that stored entries can be lost in some cases
* such as power failure.
*
* @param h Handle to the PEERSTORE service
* @param sub_system name of the sub system
* @param peer Peer Identity
* @param key entry key
* @param value entry value BLOB
* @param size size of @e value
* @param expiry absolute time after which the entry is (possibly) deleted
* @param options options specific to the storage operation
* @param cont Continuation function after the store request is sent
* @param cont_cls Closure for @a cont
*/
struct GNUNET_PEERSTORE_StoreContext *
GNUNET_PEERSTORE_store (struct GNUNET_PEERSTORE_Handle *h,
const char *sub_system,
const struct GNUNET_PeerIdentity *peer, const char *key,
const void *value, size_t size,
struct GNUNET_TIME_Absolute expiry,
enum GNUNET_PEERSTORE_StoreOption options,
GNUNET_PEERSTORE_Continuation cont, void *cont_cls)
{
struct GNUNET_MQ_Envelope *ev;
struct GNUNET_PEERSTORE_StoreContext *sc;
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Storing value (size: %lu) for subsytem `%s', peer `%s', key `%s'\n",
size, sub_system, GNUNET_i2s (peer), key);
ev = PEERSTORE_create_record_mq_envelope (sub_system, peer, key, value, size,
&expiry, options,
GNUNET_MESSAGE_TYPE_PEERSTORE_STORE);
sc = GNUNET_new (struct GNUNET_PEERSTORE_StoreContext);
sc->sub_system = GNUNET_strdup (sub_system);
sc->peer = *peer;
sc->key = GNUNET_strdup (key);
sc->value = GNUNET_memdup (value, size);
sc->size = size;
sc->expiry = expiry;
sc->options = options;
sc->cont = cont;
sc->cont_cls = cont_cls;
sc->h = h;
GNUNET_CONTAINER_DLL_insert_tail (h->store_head, h->store_tail, sc);
GNUNET_MQ_notify_sent (ev, &store_request_sent, sc);
GNUNET_MQ_send (h->mq, ev);
return sc;
}
/**
* Handles messages received from the service. Calls the proper client
* callback.
*/
static void
process_result (struct GNUNET_CHAT_Room *room,
const struct GNUNET_MessageHeader *reply)
{
struct LeaveNotificationMessage *leave_msg;
struct JoinNotificationMessage *join_msg;
struct ReceiveNotificationMessage *received_msg;
struct ConfirmationReceiptMessage *receipt;
struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pkey;
GNUNET_HashCode id;
const GNUNET_HashCode *sender;
struct GNUNET_CONTAINER_MetaData *meta;
struct GNUNET_CHAT_SendReceiptContext *src;
struct MemberList *pos;
struct MemberList *prev;
struct GNUNET_CRYPTO_AesSessionKey key;
char decrypted_msg[MAX_MESSAGE_LENGTH];
uint16_t size;
uint16_t meta_len;
uint16_t msg_len;
char *message_content;
size = ntohs (reply->size);
switch (ntohs (reply->type))
{
case GNUNET_MESSAGE_TYPE_CHAT_JOIN_NOTIFICATION:
#if DEBUG_CHAT
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Got a join notification\n");
#endif
if (size < sizeof (struct JoinNotificationMessage))
{
GNUNET_break (0);
return;
}
join_msg = (struct JoinNotificationMessage *) reply;
meta_len = size - sizeof (struct JoinNotificationMessage);
meta =
GNUNET_CONTAINER_meta_data_deserialize ((const char *) &join_msg[1],
meta_len);
if (NULL == meta)
{
GNUNET_break (0);
return;
}
pos = GNUNET_malloc (sizeof (struct MemberList));
pos->meta = meta;
GNUNET_CRYPTO_hash (&join_msg->public_key,
sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
&pos->id);
GNUNET_PSEUDONYM_add (room->cfg, &pos->id, meta);
pos->next = room->members;
room->members = pos;
if (GNUNET_NO == room->is_joined)
{
GNUNET_CRYPTO_rsa_key_get_public (room->my_private_key, &pkey);
if (0 ==
memcmp (&join_msg->public_key, &pkey,
sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded)))
{
room->join_callback (room->join_callback_cls);
room->is_joined = GNUNET_YES;
}
else
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
_("The current user must be the the first one joined\n"));
GNUNET_break (0);
return;
}
}
else
room->member_list_callback (room->member_list_callback_cls, meta,
&join_msg->public_key,
ntohl (join_msg->msg_options));
break;
case GNUNET_MESSAGE_TYPE_CHAT_LEAVE_NOTIFICATION:
#if DEBUG_CHAT
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Got a leave notification\n");
#endif
if (size < sizeof (struct LeaveNotificationMessage))
{
GNUNET_break (0);
return;
}
leave_msg = (struct LeaveNotificationMessage *) reply;
room->member_list_callback (room->member_list_callback_cls, NULL,
&leave_msg->user, GNUNET_CHAT_MSG_OPTION_NONE);
GNUNET_CRYPTO_hash (&leave_msg->user,
sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
&id);
prev = NULL;
pos = room->members;
while ((NULL != pos) &&
(0 != memcmp (&pos->id, &id, sizeof (GNUNET_HashCode))))
{
prev = pos;
pos = pos->next;
}
GNUNET_assert (NULL != pos);
if (NULL == prev)
room->members = pos->next;
else
prev->next = pos->next;
GNUNET_CONTAINER_meta_data_destroy (pos->meta);
GNUNET_free (pos);
break;
case GNUNET_MESSAGE_TYPE_CHAT_MESSAGE_NOTIFICATION:
#if DEBUG_CHAT
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Got a message notification\n");
#endif
if (size <= sizeof (struct ReceiveNotificationMessage))
{
GNUNET_break (0);
return;
}
received_msg = (struct ReceiveNotificationMessage *) reply;
if (0 != (ntohl (received_msg->msg_options) & GNUNET_CHAT_MSG_ACKNOWLEDGED))
{
src = GNUNET_malloc (sizeof (struct GNUNET_CHAT_SendReceiptContext));
src->chat_room = room;
src->received_msg = GNUNET_memdup (received_msg, size);
GNUNET_CLIENT_notify_transmit_ready (room->client,
sizeof (struct
ConfirmationReceiptMessage),
GNUNET_CONSTANTS_SERVICE_TIMEOUT,
GNUNET_YES,
&transmit_acknowledge_request, src);
}
msg_len = size - sizeof (struct ReceiveNotificationMessage);
if (0 != (ntohl (received_msg->msg_options) & GNUNET_CHAT_MSG_PRIVATE))
{
if (-1 ==
GNUNET_CRYPTO_rsa_decrypt (room->my_private_key,
&received_msg->encrypted_key, &key,
sizeof (struct
GNUNET_CRYPTO_AesSessionKey)))
{
GNUNET_break (0);
return;
}
msg_len =
GNUNET_CRYPTO_aes_decrypt (&received_msg[1], msg_len, &key,
(const struct
GNUNET_CRYPTO_AesInitializationVector *)
INITVALUE, decrypted_msg);
message_content = decrypted_msg;
}
else
{
message_content = GNUNET_malloc (msg_len + 1);
memcpy (message_content, &received_msg[1], msg_len);
}
message_content[msg_len] = '\0';
if (0 != (ntohl (received_msg->msg_options) & GNUNET_CHAT_MSG_ANONYMOUS))
{
sender = NULL;
meta = NULL;
}
else
{
pos = room->members;
while ((NULL != pos) &&
(0 !=
memcmp (&pos->id, &received_msg->sender,
sizeof (GNUNET_HashCode))))
pos = pos->next;
GNUNET_assert (NULL != pos);
sender = &received_msg->sender;
meta = pos->meta;
}
room->message_callback (room->message_callback_cls, room, sender, meta,
message_content,
GNUNET_TIME_absolute_ntoh (received_msg->timestamp),
ntohl (received_msg->msg_options));
if (message_content != decrypted_msg)
GNUNET_free (message_content);
break;
case GNUNET_MESSAGE_TYPE_CHAT_CONFIRMATION_NOTIFICATION:
#if DEBUG_CHAT
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Got a confirmation receipt\n");
#endif
if (size < sizeof (struct ConfirmationReceiptMessage))
{
GNUNET_break (0);
return;
}
receipt = (struct ConfirmationReceiptMessage *) reply;
if (NULL != room->confirmation_callback)
room->confirmation_callback (room->confirmation_cls, room,
ntohl (receipt->sequence_number),
GNUNET_TIME_absolute_ntoh
(receipt->timestamp), &receipt->target);
break;
default:
GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Unknown message type: '%u'\n"),
ntohs (reply->type));
GNUNET_break_op (0);
break;
}
}
