/**
* Listen for arriving Interests and respond to them if possible. We expect that the Portal we are passed is
* listening for messages matching the specified domainPrefix.
*
* @param [in] portal The CCNxPortal that we will read from.
* @param [in] domainPrefix A CCNxName containing the domain prefix that the specified `portal` is listening for.
* @param [in] directoryPath A string containing the path to the directory being served.
*
* @return true if at least one Interest is received and responded to, false otherwise.
*/
static bool
_receiveAndAnswerInterests(CCNxPortal *portal, const CCNxName *domainPrefix, const char *directoryPath)
{
bool result = false;
CCNxMetaMessage *inboundMessage = NULL;
while ((inboundMessage = ccnxPortal_Receive(portal)) != NULL) {
if (ccnxMetaMessage_IsInterest(inboundMessage)) {
CCNxInterest *interest = ccnxMetaMessage_GetInterest(inboundMessage);
CCNxContentObject *response = _createInterestResponse(interest, domainPrefix, directoryPath);
// At this point, response has either the requested chunk of the request file/command,
// or remains NULL.
if (response != NULL) {
// We had a response, so send it back through the Portal.
CCNxMetaMessage *responseMessage = ccnxMetaMessage_CreateFromContentObject(response);
if (ccnxPortal_Send(portal, responseMessage) == false) {
fprintf(stderr, "ccnxPortal_Send failed (error %d). Is the Forwarder running?\n", ccnxPortal_GetError(portal));
}
ccnxMetaMessage_Release(&responseMessage);
ccnxContentObject_Release(&response);
result = true; // We have received, and responded to, at least one Interest.
}
}
ccnxMetaMessage_Release(&inboundMessage);
}
return result;
}
int
reader_writer(CCNxPortalFactory *factory, const char *uri)
{
CCNxPortal *portal = ccnxPortalFactory_GetInstance(factory, ccnxPortalTypeDatagram, ccnxPortalProtocol_TLV, &ccnxPortalAttributes_Blocking);
CCNxName *prefix = ccnxName_CreateFromURI(uri);
CCNxName *bye = ccnxName_CreateFromURI("lci:/Hello/Goodbye%21");
CCNxName *contentname = ccnxName_CreateFromURI("lci:/Hello/World");
if (ccnxPortal_Listen(portal, prefix, 365 * 86400, CCNxStackTimeout_Never)) {
CCNxMetaMessage *msg;
while ((msg = ccnxPortal_Receive(portal, CCNxStackTimeout_Never)) != NULL) {
if (ccnxMetaMessage_IsInterest(msg)) {
CCNxInterest *interest = ccnxMetaMessage_GetInterest(msg);
CCNxName *interestName = ccnxInterest_GetName(interest);
if (ccnxName_Equals(interestName, contentname)) {
const PARCKeyId *publisherKeyId = ccnxPortal_GetKeyId(portal);
char buffer[128];
time_t theTime = time(0);
sprintf(buffer, "Hello World. The time is %s", ctime(&theTime));
PARCBuffer *payload = parcBuffer_CreateFromArray(buffer, 128);
parcBuffer_Flip(payload);
PARCBuffer *b = parcBuffer_Acquire(payload);
CCNxContentObject *uob = ccnxContentObject_CreateWithDataPayload(contentname, b);
// missing NULL check, case 1024
CCNxMetaMessage *message = ccnxMetaMessage_CreateFromContentObject(uob);
if (ccnxPortal_Send(portal, message, CCNxTransportStackTimeCCNxStackTimeout_Neverout_Never) == false) {
fprintf(stderr, "ccnx_write failed\n");
}
// ccnxMessage_Release(message);
} else if (ccnxName_Equals(interestName, bye)) {
break;
}
} else {
ccnxMetaMessage_Display(msg, 0);
}
ccnxMetaMessage_Release(&msg);
}
}
ccnxName_Release(&prefix);
ccnxName_Release(&bye);
ccnxName_Release(&contentname);
ccnxPortal_Release(&portal);
return 0;
}
LONGBOW_TEST_CASE(Global, athena_ProcessContentObject)
{
PARCURI *connectionURI;
Athena *athena = athena_Create(100);
CCNxName *name = ccnxName_CreateFromCString("lci:/cakes/and/pies");
uint64_t chunkNum = 0;
CCNxNameSegment *chunkSegment = ccnxNameSegmentNumber_Create(CCNxNameLabelType_CHUNK, chunkNum);
ccnxName_Append(name, chunkSegment);
ccnxNameSegment_Release(&chunkSegment);
PARCBuffer *payload = parcBuffer_WrapCString("this is a payload");
CCNxContentObject *contentObject = ccnxContentObject_CreateWithNameAndPayload(name, payload);
ccnxName_Release(&name);
parcBuffer_Release(&payload);
connectionURI = parcURI_Parse("tcp://localhost:50100/listener/name=TCPListener");
const char *result = athenaTransportLinkAdapter_Open(athena->athenaTransportLinkAdapter, connectionURI);
assertTrue(result != NULL, "athenaTransportLinkAdapter_Open failed (%s)", strerror(errno));
parcURI_Release(&connectionURI);
connectionURI = parcURI_Parse("tcp://localhost:50100/name=TCP_0");
result = athenaTransportLinkAdapter_Open(athena->athenaTransportLinkAdapter, connectionURI);
assertTrue(result != NULL, "athenaTransportLinkAdapter_Open failed (%s)", strerror(errno));
parcURI_Release(&connectionURI);
int linkId = athenaTransportLinkAdapter_LinkNameToId(athena->athenaTransportLinkAdapter, "TCP_0");
PARCBitVector *ingressVector = parcBitVector_Create();
parcBitVector_Set(ingressVector, linkId);
athena_EncodeMessage(contentObject);
athena_ProcessMessage(athena, contentObject, ingressVector);
parcBitVector_Release(&ingressVector);
// Make sure we recover processing a "nameless" content object
payload = parcBuffer_WrapCString("Hello World");
CCNxContentObject *reply = ccnxContentObject_CreateWithPayload(payload);
parcBuffer_Release(&payload);
CCNxMetaMessage *response = ccnxMetaMessage_CreateFromContentObject(reply);
ccnxContentObject_Release(&reply);
athena_EncodeMessage(response);
athena_ProcessMessage(athena, response, ingressVector);
assertNull(ingressVector, "Processing nameless content object didn't fail.");
ccnxInterest_Release(&contentObject);
ccnxInterest_Release(&response);
athena_Release(&athena);
}
int
ccnServe(const PARCIdentity *identity, const CCNxName *listenName, const char *commandString)
{
parcSecurity_Init();
CCNxPortalFactory *factory = ccnxPortalFactory_Create(identity);
CCNxPortal *portal = ccnxPortalFactory_CreatePortal(factory, ccnxPortalRTA_Message);
assertNotNull(portal, "Expected a non-null CCNxPortal pointer.");
if (ccnxPortal_Listen(portal, listenName, 365 * 86400, CCNxStackTimeout_Never)) {
while (true) {
CCNxMetaMessage *request = ccnxPortal_Receive(portal, CCNxStackTimeout_Never);
if (request == NULL) {
break;
}
CCNxInterest *interest = ccnxMetaMessage_GetInterest(request);
if (interest != NULL) {
CCNxName *interestName = ccnxInterest_GetName(interest);
PARCBuffer *payload = makePayload(interestName, commandString);
CCNxContentObject *contentObject = ccnxContentObject_CreateWithDataPayload(interestName, payload);
CCNxMetaMessage *message = ccnxMetaMessage_CreateFromContentObject(contentObject);
if (ccnxPortal_Send(portal, message, CCNxStackTimeout_Never) == false) {
fprintf(stderr, "ccnxPortal_Write failed: %d\n", ccnxPortal_GetError(portal));
}
{
char *name = ccnxName_ToString(interestName);
time_t theTime = time(0);
char *time = ctime(&theTime);
printf("%24.24s %s\n", time, name);
parcMemory_Deallocate((void **) &name);
}
parcBuffer_Release(&payload);
}
ccnxMetaMessage_Release(&request);
}
}
ccnxPortal_Release(&portal);
ccnxPortalFactory_Release(&factory);
parcSecurity_Fini();
return 0;
}
LONGBOW_TEST_CASE(Global, ccnxMetaMessage_CreateFromContentObject)
{
CCNxName *name = ccnxName_CreateFromCString("lci:/foo/bar");
PARCBuffer *payload = parcBuffer_WrapCString("This is some data. It's not good data, but it is data.");
CCNxContentObject *contentObject = ccnxContentObject_CreateWithNameAndPayload(name, payload);
CCNxMetaMessage *portalMessage = ccnxMetaMessage_CreateFromContentObject(contentObject);
assertNotNull(portalMessage, "Expected a non-null portal message");
ccnxMetaMessage_Release(&portalMessage);
ccnxContentObject_Release(&contentObject);
parcBuffer_Release(&payload);
ccnxName_Release(&name);
}
static CCNxMetaMessage *
_mockRead(void *privateData, const uint64_t *microSeconds)
{
CCNxName *name = ccnxName_Create();
PARCBuffer *payload = parcBuffer_Allocate(10);
CCNxContentObject *object = ccnxContentObject_CreateWithNameAndPayload(name, payload);
ccnxName_Release(&name);
parcBuffer_Release(&payload);
CCNxMetaMessage *result = ccnxMetaMessage_CreateFromContentObject(object);
ccnxContentObject_Release(&object);
return result;
}
static CCNxMetaMessage *
_athenaLRUContentStore_ProcessMessage(AthenaContentStoreImplementation *store, const CCNxMetaMessage *message)
{
CCNxMetaMessage *result = NULL;
AthenaLRUContentStore *impl = (AthenaLRUContentStore *) store;
if (ccnxMetaMessage_IsInterest(message)) {
CCNxInterest *interest = ccnxMetaMessage_GetInterest(message);
CCNxName *queryName = ccnxInterest_GetName(interest);
uint64_t chunkNumber = 0;
bool hasChunkNumber = false;
_getChunkNumberFromName(queryName, &chunkNumber, &hasChunkNumber);
assertFalse(hasChunkNumber, "LRUContentStore queries don't yet support more than 1 chunk.");
PARCBuffer *responsePayload = NULL;
// Find the arguments to our query.
size_t argSegmentIndex = 0;
if (_getSegmentIndexOfQueryArgs(queryName, AthenaModule_ContentStore, &argSegmentIndex)) {
CCNxNameSegment *queryTypeSegment = ccnxName_GetSegment(queryName, argSegmentIndex);
char *queryTypeString = ccnxNameSegment_ToString(queryTypeSegment); // e.g. "stat"
char *statString = "stat";
if (strncasecmp(queryTypeString, statString, strlen(statString)) == 0) {
responsePayload = _processStatQuery(impl, queryName, argSegmentIndex + 1, chunkNumber);
}
parcMemory_Deallocate(&queryTypeString);
}
if (responsePayload != NULL) {
CCNxContentObject *contentObjectResponse = ccnxContentObject_CreateWithNameAndPayload(
ccnxInterest_GetName(interest), responsePayload);
result = ccnxMetaMessage_CreateFromContentObject(contentObjectResponse);
ccnxContentObject_SetExpiryTime(contentObjectResponse,
parcClock_GetTime(impl->wallClock) +
100); // this response is good for 100 millis
ccnxContentObject_Release(&contentObjectResponse);
parcBuffer_Release(&responsePayload);
}
}
return result; // could be NULL
}
LONGBOW_TEST_CASE(Global, ccnxMetaMessage_IsContentObject)
{
CCNxName *name = ccnxName_CreateFromCString("lci:/foo/bar");
PARCBuffer *payload = parcBuffer_WrapCString("This is some data. It's not good data, but it is data.");
CCNxContentObject *contentObject = ccnxContentObject_CreateWithNameAndPayload(name, payload);
CCNxMetaMessage *portalMessage = ccnxMetaMessage_CreateFromContentObject(contentObject);
assertTrue(ccnxMetaMessage_IsContentObject(portalMessage), "Expected portal message to be an ContentObject");
assertFalse(ccnxMetaMessage_IsInterest(portalMessage), "Did not expect portal message to be an Interest");
assertFalse(ccnxMetaMessage_IsControl(portalMessage), "Did not expect portal message to be a Control message");
ccnxMetaMessage_Release(&portalMessage);
ccnxContentObject_Release(&contentObject);
parcBuffer_Release(&payload);
ccnxName_Release(&name);
}
static CCNxMetaMessage *
_create_response(Athena *athena, CCNxName *ccnxName, const char *format, ...)
{
va_list ap;
va_start(ap, format);
char responseBuffer[MAXPATHLEN];
vsprintf(responseBuffer, format, ap);
PARCBuffer *responsePayload = parcBuffer_AllocateCString(responseBuffer);
parcLog_Info(athena->log, responseBuffer);
CCNxContentObject *responseContent = ccnxContentObject_CreateWithNameAndPayload(ccnxName, responsePayload);
CCNxMetaMessage *responseMessage = ccnxMetaMessage_CreateFromContentObject(responseContent);
ccnxContentObject_Release(&responseContent);
parcBuffer_Release(&responsePayload);
athena_EncodeMessage(responseMessage);
return responseMessage;
}
static CCNxMetaMessage *
_create_stats_response(Athena *athena, CCNxName *ccnxName)
{
PARCJSON *json = parcJSON_Create();
struct timeval tv;
gettimeofday(&tv, NULL);
uint64_t nowInMillis = (tv.tv_sec * 1000) + (tv.tv_usec / 1000);
parcJSON_AddString(json, "moduleName", athenaAbout_Name());
parcJSON_AddInteger(json, "time", nowInMillis);
parcJSON_AddInteger(json, "numProcessedInterests",
athena->stats.numProcessedInterests);
parcJSON_AddInteger(json, "numProcessedContentObjects",
athena->stats.numProcessedContentObjects);
parcJSON_AddInteger(json, "numProcessedControlMessages",
athena->stats.numProcessedControlMessages);
parcJSON_AddInteger(json, "numProcessedInterestReturns",
athena->stats.numProcessedInterestReturns);
char *jsonString = parcJSON_ToString(json);
parcJSON_Release(&json);
PARCBuffer *payload = parcBuffer_CreateFromArray(jsonString, strlen(jsonString));
parcMemory_Deallocate(&jsonString);
CCNxContentObject *contentObject =
ccnxContentObject_CreateWithNameAndPayload(ccnxName, parcBuffer_Flip(payload));
ccnxContentObject_SetExpiryTime(contentObject, nowInMillis + 100); // this response is good for 100 millis
CCNxMetaMessage *result = ccnxMetaMessage_CreateFromContentObject(contentObject);
ccnxContentObject_Release(&contentObject);
parcBuffer_Release(&payload);
return result;
}
LONGBOW_TEST_CASE(Global, ccnxMetaMessage_GetContentObject)
{
CCNxName *name = ccnxName_CreateFromCString("lci:/foo/bar");
PARCBuffer *payload = parcBuffer_WrapCString("This is some data. It's not good data, but it is data.");
CCNxContentObject *contentObject = ccnxContentObject_CreateWithNameAndPayload(name, payload);
CCNxMetaMessage *portalMessage = ccnxMetaMessage_CreateFromContentObject(contentObject);
CCNxContentObject *reference = ccnxMetaMessage_GetContentObject(portalMessage);
#ifndef BUGZID_712
// TODO: We need a ccnxContentObject_Equals()!
// assertTrue(ccnxContentObject_Equals(contentObject, reference), "Expected reference to equal original contentObject");
#endif // !BUGZID_712
ccnxContentObject_AssertValid(reference);
ccnxMetaMessage_Release(&portalMessage);
ccnxContentObject_Release(&contentObject);
parcBuffer_Release(&payload);
ccnxName_Release(&name);
}
static CCNxMetaMessage *
_create_FIBList_response(Athena *athena, CCNxName *ccnxName, PARCList *fibEntryList)
{
PARCJSON *jsonPayload = parcJSON_Create();
PARCJSONArray *jsonEntryList = parcJSONArray_Create();
parcJSON_AddArray(jsonPayload, JSON_KEY_RESULT, jsonEntryList);
for (size_t i = 0; i < parcList_Size(fibEntryList); ++i) {
AthenaFIBListEntry *entry = parcList_GetAtIndex(fibEntryList, i);
if (entry != NULL) {
CCNxName *prefixName = athenaFIBListEntry_GetName(entry);
if (prefixName) {
char *prefix = ccnxName_ToString(prefixName);
int linkId = athenaFIBListEntry_GetLinkId(entry);
const char *linkName = athenaTransportLinkAdapter_LinkIdToName(athena->athenaTransportLinkAdapter, linkId);
parcLog_Debug(athena->log, " Route: %s->%s", prefix, linkName);
PARCJSON *jsonItem = parcJSON_Create();
parcJSON_AddString(jsonItem, JSON_KEY_NAME, prefix);
parcJSON_AddString(jsonItem, JSON_KEY_LINK, linkName);
PARCJSONValue *jsonItemValue = parcJSONValue_CreateFromJSON(jsonItem);
parcJSON_Release(&jsonItem);
parcJSONArray_AddValue(jsonEntryList, jsonItemValue);
parcJSONValue_Release(&jsonItemValue);
parcMemory_Deallocate(&prefix);
} else {
int linkId = athenaFIBListEntry_GetLinkId(entry);
const char *linkName = athenaTransportLinkAdapter_LinkIdToName(athena->athenaTransportLinkAdapter, linkId);
parcLog_Debug(athena->log, " Route: <empty>->%s", linkName);
PARCJSON *jsonItem = parcJSON_Create();
parcJSON_AddString(jsonItem, JSON_KEY_NAME, "");
parcJSON_AddString(jsonItem, JSON_KEY_LINK, linkName);
PARCJSONValue *jsonItemValue = parcJSONValue_CreateFromJSON(jsonItem);
parcJSON_Release(&jsonItem);
parcJSONArray_AddValue(jsonEntryList, jsonItemValue);
parcJSONValue_Release(&jsonItemValue);
}
}
}
char *jsonString = parcJSON_ToString(jsonPayload);
parcJSONArray_Release(&jsonEntryList);
parcJSON_Release(&jsonPayload);
PARCBuffer *payload = parcBuffer_CreateFromArray(jsonString, strlen(jsonString));
CCNxContentObject *contentObject =
ccnxContentObject_CreateWithNameAndPayload(ccnxName, parcBuffer_Flip(payload));
struct timeval tv;
gettimeofday(&tv, NULL);
uint64_t nowInMillis = (tv.tv_sec * 1000) + (tv.tv_usec / 1000);
ccnxContentObject_SetExpiryTime(contentObject, nowInMillis + 100); // this response is good for 100 millis
CCNxMetaMessage *result = ccnxMetaMessage_CreateFromContentObject(contentObject);
ccnxContentObject_Release(&contentObject);
parcBuffer_Release(&payload);
parcMemory_Deallocate(&jsonString);
athena_EncodeMessage(result);
return result;
}
static CCNxMetaMessage *
_create_linkList_response(AthenaTransportLinkAdapter *athenaTransportLinkAdapter, CCNxName *ccnxName)
{
PARCJSONArray *jsonLinkList = parcJSONArray_Create();
for (int index = 0; index < parcArrayList_Size(athenaTransportLinkAdapter->listenerList); index++) {
AthenaTransportLink *athenaTransportLink = parcArrayList_Get(athenaTransportLinkAdapter->listenerList, index);
const char *linkName = athenaTransportLink_GetName(athenaTransportLink);
bool notLocal = athenaTransportLink_IsNotLocal(athenaTransportLink);
bool localForced = athenaTransportLink_IsForceLocal(athenaTransportLink);
PARCJSON *jsonItem = parcJSON_Create();
parcJSON_AddString(jsonItem, "linkName", linkName);
parcJSON_AddInteger(jsonItem, "index", -1);
parcJSON_AddBoolean(jsonItem, "notLocal", notLocal);
parcJSON_AddBoolean(jsonItem, "localForced", localForced);
PARCJSONValue *jsonItemValue = parcJSONValue_CreateFromJSON(jsonItem);
parcJSON_Release(&jsonItem);
parcJSONArray_AddValue(jsonLinkList, jsonItemValue);
parcJSONValue_Release(&jsonItemValue);
if (notLocal) {
parcLog_Debug(athenaTransportLinkAdapter->log, "\n Link listener%s: %s", localForced ? " (forced remote)" : "", linkName);
} else {
parcLog_Debug(athenaTransportLinkAdapter->log, "\n Link listener%s: %s", localForced ? " (forced local)" : "", linkName);
}
}
for (int index = 0; index < parcArrayList_Size(athenaTransportLinkAdapter->instanceList); index++) {
AthenaTransportLink *athenaTransportLink = parcArrayList_Get(athenaTransportLinkAdapter->instanceList, index);
if (athenaTransportLink) {
const char *linkName = athenaTransportLink_GetName(athenaTransportLink);
bool notLocal = athenaTransportLink_IsNotLocal(athenaTransportLink);
bool localForced = athenaTransportLink_IsForceLocal(athenaTransportLink);
PARCJSON *jsonItem = parcJSON_Create();
parcJSON_AddString(jsonItem, "linkName", linkName);
parcJSON_AddInteger(jsonItem, "index", index);
parcJSON_AddBoolean(jsonItem, "notLocal", notLocal);
parcJSON_AddBoolean(jsonItem, "localForced", localForced);
PARCJSONValue *jsonItemValue = parcJSONValue_CreateFromJSON(jsonItem);
parcJSON_Release(&jsonItem);
parcJSONArray_AddValue(jsonLinkList, jsonItemValue);
parcJSONValue_Release(&jsonItemValue);
if (notLocal) {
parcLog_Debug(athenaTransportLinkAdapter->log, "\n Link instance [%d] %s: %s", index, localForced ? "(forced remote)" : "(remote)", linkName);
} else {
parcLog_Debug(athenaTransportLinkAdapter->log, "\n Link instance [%d] %s: %s", index, localForced ? "(forced local)" : "(local)", linkName);
}
}
}
char *jsonString = parcJSONArray_ToString(jsonLinkList);
parcJSONArray_Release(&jsonLinkList);
PARCBuffer *payload = parcBuffer_CreateFromArray(jsonString, strlen(jsonString));
CCNxContentObject *contentObject =
ccnxContentObject_CreateWithDataPayload(ccnxName, parcBuffer_Flip(payload));
struct timeval tv;
gettimeofday(&tv, NULL);
uint64_t nowInMillis = (tv.tv_sec * 1000) + (tv.tv_usec / 1000);
ccnxContentObject_SetExpiryTime(contentObject, nowInMillis + 100); // this response is good for 100 millis
CCNxMetaMessage *result = ccnxMetaMessage_CreateFromContentObject(contentObject);
ccnxContentObject_Release(&contentObject);
parcBuffer_Release(&payload);
parcMemory_Deallocate(&jsonString);
athena_EncodeMessage(result);
return result;
}
