/**
* Common parts of setting up a MetisTlvName after the backing memory has been allocated and copied in to.
*
* PRECONDITIONS: name->memory and name->memoryLength set
*/
static void
_setup(MetisTlvName *name)
{
name->refCountPtr = parcMemory_Allocate(sizeof(unsigned));
assertNotNull(name->refCountPtr, "parcMemory_Allocate(%zu) returned NULL", sizeof(unsigned));
*name->refCountPtr = 1;
metisTlv_NameSegments(name->memory, name->memoryLength, &name->segmentArray, &name->segmentArrayLength);
name->segmentCumulativeHashArray = parcMemory_Allocate(name->segmentArrayLength * sizeof(uint32_t));
assertNotNull(name->segmentCumulativeHashArray, "parcMemory_Allocate(%zu) returned NULL", name->segmentArrayLength * sizeof(uint32_t));
name->segmentCumulativeHashArrayLengthPtr = parcMemory_Allocate(sizeof(size_t));
assertNotNull(name->segmentCumulativeHashArrayLengthPtr, "parcMemory_Allocate(%zu) returned NULL", sizeof(size_t));
*name->segmentCumulativeHashArrayLengthPtr = 1;
name->segmentCumulativeHashArrayLimit = name->segmentArrayLength;
if (name->segmentArrayLength > 0) {
// always hash the 1st name component. This is needed as the initial case
// to do the cumulative hashes in metisTlvName_HashCode
name->segmentCumulativeHashArray[0] = parcHash32_Data(&name->memory[name->segmentArray[0].offset], name->segmentArray[0].length);
}
}
TransportContext *
Transport_Create(TransportTypes type)
{
if (the_context == NULL) {
switch (type) {
case TRANSPORT_RTA:
the_context = parcMemory_Allocate(sizeof(TransportContext));
assertNotNull(the_context, "TransportContext could not be allocated, parcMemory_Allocate(%zu) returned NULL", sizeof(TransportContext));
the_context->references = 0;
the_context->ops = rta_ops;
the_context->transport_data = the_context->ops.Create();
the_context->transport_type = type;
break;
default:
fprintf(stderr, "%s unknown transport type %d\n", __func__, type);
abort();
break;
}
}
if (the_context->transport_type == type) {
the_context->references++;
return the_context;
}
fprintf(stderr, "%s transport type %d not of request type %d\n",
__func__, the_context->transport_type, type);
abort();
}
/**
* Given a CCNxName, a directory path, a file name, and a requested chunk number, return a new CCNxContentObject
* with that CCNxName and containing the specified chunk of the file. The new CCNxContentObject will also
* contain the number of the last chunk required to transfer the complete file. Note that the last chunk of the
* file being retrieved is calculated each time we retrieve a chunk so the file can be growing in size as we
* transfer it.
* The new CCnxContentObject must eventually be released by calling ccnxContentObject_Release().
*
* @param [in] name The CCNxName to use when creating the new CCNxContentObject.
* @param [in] directoryPath The directory in which to find the specified file.
* @param [in] fileName The name of the file.
* @param [in] requestedChunkNumber The number of the requested chunk from the file.
*
* @return A new CCNxContentObject instance containing the request chunk of the specified file, or NULL if
* the file did not exist or was otherwise unavailable.
*/
static CCNxContentObject *
_createFetchResponse(const CCNxName *name, const char *directoryPath, const char *fileName, uint64_t requestedChunkNumber)
{
CCNxContentObject *result = NULL;
uint64_t finalChunkNumber = 0;
// Combine the directoryPath and fileName into the full path name of the desired file
size_t filePathBufferSize = strlen(fileName) + strlen(directoryPath) + 2; // +2 for '/' and trailing null.
char *fullFilePath = parcMemory_Allocate(filePathBufferSize);
assertNotNull(fullFilePath, "parcMemory_Allocate(%zu) returned NULL", filePathBufferSize);
snprintf(fullFilePath, filePathBufferSize, "%s/%s", directoryPath, fileName);
// Make sure the file exists and is accessible before creating a ContentObject response.
if (tutorialFileIO_IsFileAvailable(fullFilePath)) {
// Since the file's length can change (e.g. if it is being written to while we're fetching
// it), the final chunk number can change between requests for content chunks. So, update
// it each time this function is called.
finalChunkNumber = _getFinalChunkNumberOfFile(fullFilePath, tutorialCommon_ChunkSize);
// Get the actual contents of the specified chunk of the file.
PARCBuffer *payload = tutorialFileIO_GetFileChunk(fullFilePath, tutorialCommon_ChunkSize, requestedChunkNumber);
if (payload != NULL) {
result = _createContentObject(name, payload, finalChunkNumber);
parcBuffer_Release(&payload);
}
}
parcMemory_Deallocate((void **) &fullFilePath);
return result; // Could be NULL if there was no payload
}
static PARCSignature *
_SignDigest(PARCPublicKeySigner *signer, const PARCCryptoHash *digestToSign)
{
parcSecurity_AssertIsInitialized();
assertNotNull(signer, "Parameter must be non-null CCNxFileKeystore");
assertNotNull(digestToSign, "Buffer to sign must not be null");
// TODO: what is the best way to expose this?
PARCKeyStore *keyStore = signer->keyStore;
PARCBuffer *privateKeyBuffer = parcKeyStore_GetDEREncodedPrivateKey(keyStore);
EVP_PKEY *privateKey = NULL;
size_t keySize = parcBuffer_Remaining(privateKeyBuffer);
uint8_t *bytes = parcBuffer_Overlay(privateKeyBuffer, keySize);
privateKey = d2i_PrivateKey(EVP_PKEY_RSA, &privateKey, (const unsigned char **) &bytes, keySize);
parcBuffer_Release(&privateKeyBuffer);
RSA *rsa = EVP_PKEY_get1_RSA(privateKey);
int opensslDigestType;
switch (parcCryptoHash_GetDigestType(digestToSign)) {
case PARCCryptoHashType_SHA256:
opensslDigestType = NID_sha256;
break;
case PARCCryptoHashType_SHA512:
opensslDigestType = NID_sha512;
break;
default:
trapUnexpectedState("Unknown digest type: %s",
parcCryptoHashType_ToString(parcCryptoHash_GetDigestType(digestToSign)));
}
uint8_t *sig = parcMemory_Allocate(RSA_size(rsa));
assertNotNull(sig, "parcMemory_Allocate(%u) returned NULL", RSA_size(rsa));
unsigned sigLength = 0;
PARCBuffer *bb_digest = parcCryptoHash_GetDigest(digestToSign);
int result = RSA_sign(opensslDigestType,
(unsigned char *) parcByteArray_Array(parcBuffer_Array(bb_digest)),
(int) parcBuffer_Remaining(bb_digest),
sig,
&sigLength,
rsa);
assertTrue(result == 1, "Got error from RSA_sign: %d", result);
RSA_free(rsa);
PARCBuffer *bbSign = parcBuffer_Allocate(sigLength);
parcBuffer_Flip(parcBuffer_PutArray(bbSign, sigLength, sig));
parcMemory_Deallocate((void **) &sig);
PARCSignature *signature =
parcSignature_Create(_GetSigningAlgorithm(signer),
parcCryptoHash_GetDigestType(digestToSign),
bbSign
);
parcBuffer_Release(&bbSign);
return signature;
}
static void *
_ccnxManifestHashGroupIterator_Init(CCNxManifestHashGroup *group)
{
_HashgroupIteratorState *state = parcMemory_Allocate(sizeof(_HashgroupIteratorState));
state->pointerNumber = 0;
state->atEnd = false;
return state;
}
void *
valueNewInt(int value)
{
int *newValue = parcMemory_Allocate(sizeof(int));
assertNotNull(newValue, "parcMemory_Allocate(%zu) returned NULL", sizeof(int));
*newValue = value;
return newValue;
}
void *
keyNewInt(int key)
{
int *newKey = parcMemory_Allocate(sizeof(int));
assertNotNull(newKey, "parcMemory_Allocate(%zu) returned NULL", sizeof(int));
*newKey = key;
return newKey;
}
/*
* Small size allocator for creating a network buffer
*/
static size_t
_allocator(void *userarg, size_t bytes, void **output)
{
const size_t allocationSize = *(size_t *) userarg;
void *allocated = parcMemory_Allocate(allocationSize);
*output = allocated;
return allocationSize;
}
static void *
_InitForward(_DummyChunker *chunker)
{
_DummyChunkerState *state = parcMemory_Allocate(sizeof(_DummyChunkerState));
state->val = 0;
state->dir = 1;
state->atEnd = false;
return state;
}
static inline struct parc_deque_node *
_parcDequeNode_Create(void *element, struct parc_deque_node *previous, struct parc_deque_node *next)
{
struct parc_deque_node *result = parcMemory_Allocate(sizeof(struct parc_deque_node));
if (result != NULL) {
result->element = element;
result->next = next;
result->previous = previous;
}
return result;
}
char *
parcBuffer_ToString(const PARCBuffer *buffer)
{
size_t remaining = parcBuffer_Remaining(buffer);
char *result = parcMemory_Allocate(remaining + 1);
if (remaining > 0) {
assertNotNull(result, "parcMemory_Allocate returned NULL");
if (result != NULL) {
memcpy(result, parcBuffer_Overlay((PARCBuffer *) buffer, 0), remaining);
}
}
result[remaining] = 0;
return result;
}
MetisTlvName *
metisTlvName_Create(const uint8_t *memory, size_t memoryLength)
{
MetisTlvName *name = parcMemory_AllocateAndClear(sizeof(MetisTlvName));
assertNotNull(name, "parcMemory_AllocateAndClear(%zu) returned NULL", sizeof(MetisTlvName));
name->memory = parcMemory_Allocate(memoryLength);
assertNotNull(name->memory, "parcMemory_Allocate(%zu) returned NULL", memoryLength);
memcpy(name->memory, memory, memoryLength);
name->memoryLength = memoryLength;
_setup(name);
return name;
}
MetisTlvName *
metisTlvName_CreateFromCCNxName(const CCNxName *ccnxName)
{
// to avoid reallocs, calculate the exact size we need
size_t memoryLength = 0;
for (size_t i = 0; i < ccnxName_GetSegmentCount(ccnxName); i++) {
CCNxNameSegment *segment = ccnxName_GetSegment(ccnxName, i);
memoryLength += 4 + ccnxNameSegment_Length(segment);
}
MetisTlvName *name = parcMemory_AllocateAndClear(sizeof(MetisTlvName));
assertNotNull(name, "parcMemory_AllocateAndClear(%zu) returned NULL", sizeof(MetisTlvName));
name->memoryLength = memoryLength;
name->memory = parcMemory_Allocate(memoryLength);
assertNotNull(name->memory, "parcMemory_Allocate(%zu) returned NULL", memoryLength);
uint8_t *p = name->memory;
uint8_t *end = p + memoryLength;
for (size_t i = 0; i < ccnxName_GetSegmentCount(ccnxName); i++) {
CCNxNameSegment *segment = ccnxName_GetSegment(ccnxName, i);
uint16_t type = ccnxNameSegment_GetType(segment);
uint16_t length = ccnxNameSegment_Length(segment);
*(uint16_t *) p = htons(type);
p += 2;
*(uint16_t *) p = htons(length);
p += 2;
if (length >0) {
PARCBuffer *buffer = ccnxNameSegment_GetValue(segment);
uint8_t *overlay = parcBuffer_Overlay(buffer, 0);
memcpy(p, overlay, length);
p += length;
}
// sanity check
assertTrue(p <= end, "Wrote past the end of buffer, now at %p end at %p", p, end);
}
_setup(name);
return name;
}
static void *
_InitForward(PARCBufferChunker *chunker)
{
_ChunkerState *state = parcMemory_Allocate(sizeof(_ChunkerState));
state->chunkNumber = 0;
state->direction = 0;
state->position = 0;
state->atEnd = false;
if (parcBuffer_Remaining(chunker->data) < chunker->chunkSize) {
state->nextChunkSize = parcBuffer_Remaining(chunker->data);
} else {
state->nextChunkSize = chunker->chunkSize;
}
return state;
}
static void *
_hmacCreate(void *env)
{
_PARCAesSignerFileStore *keystore = (_PARCAesSignerFileStore *) env;
// HMAC_Init_ex seems to overrun the size of HMAC_CTX, so make it bigger
HMAC_CTX *ctx = parcMemory_Allocate(sizeof(HMAC_CTX) * 2);
assertNotNull(ctx, "parcMemory_Allocate(%zu) returned NULL for HMAC_CTX", sizeof(HMAC_CTX) * 2);
HMAC_CTX_init(ctx);
// Now initialize it with our digest and key, so in hmac_init we can avoid using those
assertTrue(parcBuffer_Remaining(keystore->secretKey) < INT_MAX, "The keystore secret key cannot be longer than %d", INT_MAX);
HMAC_Init_ex(ctx, parcByteArray_Array(parcBuffer_Array(keystore->secretKey)), (int) parcBuffer_Remaining(keystore->secretKey), keystore->opensslMd, NULL);
return ctx;
}
MetisHopByHopFragmenter *
metisHopByHopFragmenter_Create(MetisLogger *logger, unsigned mtu)
{
MetisHopByHopFragmenter *fragmenter = parcMemory_Allocate(sizeof(MetisHopByHopFragmenter));
if (fragmenter) {
fragmenter->nextReceiveFragSequenceNumber = 0;
fragmenter->nextSendFragSequenceNumber = 0;
fragmenter->logger = metisLogger_Acquire(logger);
fragmenter->mtu = mtu;
fragmenter->receiveQueueCapacity = 128; // this is a many-to-one queue, so not too big
fragmenter->sendQueueCapacity = 2048; // this is a one-to-many queue, so bigger (e.g. 64 KB in to 1KB payloads)
fragmenter->receiveQueue = parcRingBuffer1x1_Create(fragmenter->receiveQueueCapacity, _ringBufferDestroyer);
fragmenter->sendQueue = parcRingBuffer1x1_Create(fragmenter->sendQueueCapacity, _ringBufferDestroyer);
fragmenter->currentReceiveBuffer = parcEventBuffer_Create();
fragmenter->parserState = _ParserState_Idle;
}
return fragmenter;
}
static void *
_hmacCreate(void *env)
{
PARCSymmetricKeySigner *signer = (PARCSymmetricKeySigner *) env;
// HMAC_Init_ex seems to overrun the size of HMAC_CTX, so make it bigger
HMAC_CTX *ctx = parcMemory_Allocate(sizeof(HMAC_CTX) * 2);
assertNotNull(ctx, "parcMemory_Allocate(%zu) returned NULL for HMAC_CTX", sizeof(HMAC_CTX) * 2);
HMAC_CTX_init(ctx);
// Now initialize it with our digest and key, so in hmac_init we can avoid using those
PARCBuffer *secretKey = parcSymmetricKeyStore_GetKey(signer->keyStore);
assertTrue(parcBuffer_Remaining(secretKey) < 512, "The keystore secret key cannot be longer than %d", 512);
HMAC_Init_ex(ctx, parcByteArray_Array(parcBuffer_Array(secretKey)), (int) parcBuffer_Remaining(secretKey), signer->opensslMd, NULL);
return ctx;
}
static void *
_InitReverse(PARCFileChunker *chunker)
{
_ChunkerState *state = parcMemory_Allocate(sizeof(_ChunkerState));
state->chunkNumber = 0;
state->direction = 1;
state->atEnd = false;
state->totalSize = parcFile_GetFileSize(chunker->file);
if (state->totalSize < chunker->chunkSize) {
state->position = 0;
state->nextChunkSize = state->totalSize;
} else {
state->position = state->totalSize - chunker->chunkSize;
state->nextChunkSize = chunker->chunkSize;
}
return state;
}
LONGBOW_TEST_CASE(Global, ccnxWireFormatMessage_PutGetIoVec)
{
uint8_t *data = parcMemory_Allocate(64);
memset(data, 0, 64);
PARCBuffer *buffer = parcBuffer_Allocate(1);
CCNxCodecNetworkBuffer *netbuff = ccnxCodecNetworkBuffer_CreateFromArray(&ParcMemoryMemoryBlock, NULL, 64, data);
CCNxCodecNetworkBufferIoVec *iovec = ccnxCodecNetworkBuffer_CreateIoVec(netbuff);
CCNxTlvDictionary *packet = ccnxCodecSchemaV1TlvDictionary_CreateInterest();
ccnxWireFormatMessage_PutIoVec((CCNxWireFormatMessage *) packet, iovec);
CCNxCodecNetworkBufferIoVec *test = ccnxWireFormatMessage_GetIoVec((CCNxWireFormatMessage *) packet);
assertTrue(test == iovec, "Failed to get iovec from dictionary, expected %p got %p", (void *) iovec, (void *) test);
ccnxTlvDictionary_Release(&packet);
parcBuffer_Release(&buffer);
ccnxCodecNetworkBufferIoVec_Release(&iovec);
ccnxCodecNetworkBuffer_Release(&netbuff);
}
PARCEventSignal *
parcEventSignal_Create(PARCEventScheduler *eventScheduler, int signal, PARCEventType flags, PARCEvent_Callback *callback, void *callbackArgs)
{
PARCEventSignal *parcEventSignal = parcMemory_Allocate(sizeof(PARCEventSignal));
assertNotNull(parcEventSignal, "parcMemory_Allocate(%zu) returned NULL", sizeof(PARCEventSignal));
parcEventSignal->eventScheduler = eventScheduler;
parcEventSignal->callback = callback;
parcEventSignal->callbackUserData = callbackArgs;
parcEventSignal->event = event_new(parcEventScheduler_GetEvBase(eventScheduler), signal,
internal_PARCEventType_to_libevent_type(flags),
_parc_event_signal_callback, parcEventSignal);
assertNotNull(parcEventSignal->event, "Could not create a new event!");
parcEventSignal_LogDebug(parcEventSignal,
"parcEventSignal_Create(base=%p,signal=%x,flags=%x,cb=%p,args=%p) = %p\n",
parcEventScheduler_GetEvBase(eventScheduler), signal, flags,
callback, callbackArgs, parcEventSignal);
return parcEventSignal;
}
char *
parcMemory_Format(const char *format, ...)
{
va_list ap;
va_start(ap, format);
va_list copy;
va_copy(copy, ap);
int length = vsnprintf(NULL, 0, format, copy);
va_end(copy);
char *result = NULL;
if (length >= 0) {
result = parcMemory_Allocate(length + 1);
if (result != NULL) {
vsprintf(result, format, ap);
}
}
return result;
}
/**
* Creates a client-specific session
*
* <#Discussion#>
*
* @param <#param1#>
* @return <#return#>
*
* Example:
* @code
* <#example#>
* @endcode
*/
static _MetisCommandLineInterface_Session *
metisCliSession_Create(MetisCommandLineInterface *cli, MetisSocketType clientSocket, struct sockaddr *clientAddress, int clientAddressLength)
{
_MetisCommandLineInterface_Session *session = parcMemory_AllocateAndClear(sizeof(_MetisCommandLineInterface_Session));
assertNotNull(session, "parcMemory_AllocateAndClear(%zu) returned NULL", sizeof(_MetisCommandLineInterface_Session));
session->parentCli = cli;
session->clientAddress = parcMemory_Allocate(clientAddressLength);
assertNotNull(session->clientAddress, "parcMemory_Allocate(%d) returned NULL", clientAddressLength);
session->clientAddressLength = clientAddressLength;
session->clientSocket = clientSocket;
memcpy(session->clientAddress, clientAddress, clientAddressLength);
MetisDispatcher *dispatcher = metisForwarder_GetDispatcher(cli->metis);
PARCEventScheduler *eventBase = metisDispatcher_GetEventScheduler(dispatcher);
session->streamBuffer = parcEventQueue_Create(eventBase, clientSocket, PARCEventQueueOption_CloseOnFree | PARCEventQueueOption_DeferCallbacks);
parcEventQueue_SetCallbacks(session->streamBuffer, _metisCliSession_ReadCallback, NULL, _metisCliSession_EventCallback, session);
parcEventQueue_Enable(session->streamBuffer, PARCEventType_Read);
return session;
}
PARCHashMap *
parcHashMap_Copy(const PARCHashMap *original)
{
parcHashMap_OptionalAssertValid(original);
PARCHashMap *result = parcObject_CreateInstance(PARCHashMap);
result->capacity = original->capacity;
result->minCapacity = original->minCapacity;
result->maxLoadFactor = original->maxLoadFactor;
result->minLoadFactor = original->minLoadFactor;
result->size = original->size;
result->buckets = parcMemory_Allocate(result->capacity * sizeof(PARCLinkedList*));
for (unsigned int i = 0; i < result->capacity; i++) {
result->buckets[i] = NULL;
if (original->buckets[i] != NULL) {
result->buckets[i] = parcLinkedList_Copy(original->buckets[i]);
}
}
return result;
}
LONGBOW_TEST_CASE(CreateRelease, CreateRelease)
{
CCNxPortalFactory *factory = (CCNxPortalFactory *) longBowTestCase_GetClipBoardData(testCase);
CCNxPortalAttributes *attributes = NULL;
CCNxPortalStack *actual =
ccnxPortalStack_Create(factory,
attributes,
_mockStart,
_mockStop,
_mockRead,
_mockSend,
_mockListen,
_mockIgnore,
_mockGetFileId,
_mockSetAttributes,
_mockGetAttributes,
parcMemory_Allocate(10),
parcMemory_DeallocateImpl);
parcObjectTesting_AssertAcquire(actual);
ccnxPortalStack_Release(&actual);
}
return 1;
}
}
static uint32_t
_dummy_HashCode(const _DummyObject *obj)
{
_DummyObject *dummy = (_DummyObject *) obj;
dummy->calledCount++;
return 1337;
}
static char *
_dummy_ToString(const _DummyObject *x __attribute__((unused)))
{
char *str = (char *) parcMemory_Allocate(6);
char *test = "dummy";
sprintf(str, "%s", test);
return str;
}
static PARCJSON *
_dummy_ToJSON(const _DummyObject *x __attribute__((unused)))
{
PARCJSON *json = parcJSON_ParseString("{ \"type\" : \"dummy\" }");
return json;
}
parcObject_ExtendPARCObject(_DummyObject, _dummy_Destroy, _dummy_Copy, _dummy_ToString,
_dummy_Equals, _dummy_Compare, _dummy_HashCode, _dummy_ToJSON);
static int
_ETHSend(AthenaTransportLink *athenaTransportLink, CCNxMetaMessage *ccnxMetaMessage)
{
struct _ETHLinkData *linkData = athenaTransportLink_GetPrivateData(athenaTransportLink);
if (ccnxTlvDictionary_GetSchemaVersion(ccnxMetaMessage) == CCNxTlvDictionary_SchemaVersion_V0) {
parcLog_Debug(athenaTransportLink_GetLogger(athenaTransportLink),
"sending deprecated version %d message\n", ccnxTlvDictionary_GetSchemaVersion(ccnxMetaMessage));
}
// Construct our header to prepend
struct ether_header header;
memcpy(header.ether_shost, &(linkData->link.myAddress), ETHER_ADDR_LEN * sizeof(uint8_t));
memcpy(header.ether_dhost, &(linkData->link.peerAddress), ETHER_ADDR_LEN * sizeof(uint8_t));
header.ether_type = htons(athenaEthernet_GetEtherType(linkData->athenaEthernet));
// An iovec to contain the header and packet data
struct iovec iov[2];
struct iovec *array = iov;
int iovcnt = 2;
size_t messageLength = 0;
// If the iovec we're prepending to has more than one element, allocatedIovec holds the
// allocated IO vector of the right size that we must deallocate before returning.
struct iovec *allocatedIovec = NULL;
// Attach the header and populate the iovec
CCNxCodecNetworkBufferIoVec *iovec = athenaTransportLinkModule_GetMessageIoVector(ccnxMetaMessage);
iovcnt = ccnxCodecNetworkBufferIoVec_GetCount((CCNxCodecNetworkBufferIoVec *) iovec);
const struct iovec *networkBufferIovec = ccnxCodecNetworkBufferIoVec_GetArray((CCNxCodecNetworkBufferIoVec *) iovec);
// Trivial case, single iovec element.
if (iovcnt == 1) {
// Header
array[0].iov_len = sizeof(struct ether_header);
array[0].iov_base = &header;
// Message content
array[1].iov_len = networkBufferIovec->iov_len;
array[1].iov_base = networkBufferIovec->iov_base;
messageLength = array[0].iov_len + array[1].iov_len;
} else {
// Allocate a new iovec if more than one vector
allocatedIovec = parcMemory_Allocate(sizeof(struct iovec) * (iovcnt + 1));
array = allocatedIovec;
// Header
array[0].iov_len = sizeof(struct ether_header);
array[0].iov_base = &header;
messageLength = array[0].iov_len;
// Append message content
for (int i = 0; i < iovcnt; i++) {
array[i + 1].iov_len = networkBufferIovec[i].iov_len;
array[i + 1].iov_base = networkBufferIovec[i].iov_base;
messageLength += array[i + 1].iov_len;
}
}
iovcnt++; // increment for the header
if (linkData->link.mtu) {
if (messageLength > linkData->link.mtu) {
if (allocatedIovec != NULL) {
parcMemory_Deallocate(&allocatedIovec);
}
ccnxCodecNetworkBufferIoVec_Release(&iovec);
errno = EMSGSIZE;
return -1;
}
}
parcLog_Debug(athenaTransportLink_GetLogger(athenaTransportLink),
"sending message (size=%d)", messageLength);
ssize_t writeCount = 0;
writeCount = athenaEthernet_Send(linkData->athenaEthernet, array, iovcnt);
ccnxCodecNetworkBufferIoVec_Release(&iovec);
// Free up any storage allocated for a non-singular iovec
if (allocatedIovec != NULL) {
parcMemory_Deallocate(&allocatedIovec);
array = NULL;
}
// on error close the link, else return to retry a zero write
if (writeCount == -1) {
if ((errno == EAGAIN) || (errno == EINTR)) {
parcLog_Info(athenaTransportLink_GetLogger(athenaTransportLink), "send retry");
linkData->_stats.send_Retry++;
return -1;
}
athenaTransportLink_SetEvent(athenaTransportLink, AthenaTransportLinkEvent_Error);
parcLog_Error(athenaTransportLink_GetLogger(athenaTransportLink),
"send error (%s)", strerror(errno));
linkData->_stats.send_Error++;
return -1;
}
// Short write
if (writeCount != messageLength) {
linkData->_stats.send_ShortWrite++;
parcLog_Debug(athenaTransportLink_GetLogger(athenaTransportLink), "short write");
return -1;
}
return 0;
}