HarvestResult processHarvestFromFd(int fd, HarvestProcessor* harvestProcessor,
bool shouldProcessData) {
MwsHarvest_SaxUserData user_data;
xmlSAXHandler saxHandler;
xmlParserCtxtPtr ctxtPtr;
HarvestResult result;
result.status = -1;
user_data.harvestProcessor = harvestProcessor;
user_data.shouldProcessData = shouldProcessData;
memset(&saxHandler, 0, sizeof(xmlSAXHandler));
// Registering Sax callbacks
saxHandler.endDocument = my_endDocument;
saxHandler.startElement = my_startElement;
saxHandler.endElement = my_endElement;
saxHandler.characters = my_characters;
saxHandler.warning = my_warning;
saxHandler.error = my_error;
saxHandler.fatalError = my_fatalError;
// Locking libXML -- to allow multi-threaded use
xmlLockLibrary();
// Creating the IOParser context
if ((ctxtPtr = xmlCreateIOParserCtxt(&saxHandler, &user_data,
fdXmlInputReadCallback, nullptr, &fd,
XML_CHAR_ENCODING_UTF8)) ==
nullptr) {
PRINT_WARN("Error while creating the ParserContext\n");
}
// Parsing the document
else if ((result.status = xmlParseDocument(ctxtPtr)) == -1) {
PRINT_WARN("Parsing XML document failed\n");
}
// Freeing the parser context
if (ctxtPtr) {
xmlFreeParserCtxt(ctxtPtr);
}
// Unlocking libXML -- to allow multi-threaded use
xmlUnlockLibrary();
result.numExpressions = user_data.parsedExpr;
return result;
}
static void
exsltCryptoGcryptInit (void) {
static int gcrypt_init;
xmlLockLibrary ();
if (!gcrypt_init) {
/* The function `gcry_check_version' must be called before any other
function in the library, because it initializes the thread support
subsystem in Libgcrypt. To achieve this in all generality, it is
necessary to synchronize the call to this function with all other calls
to functions in the library, using the synchronization mechanisms
available in your thread library. (from gcrypt.info)
*/
gcry_check_version (GCRYPT_VERSION);
gcrypt_init = 1;
}
xmlUnlockLibrary ();
}
MwsQuery* readMwsQueryFromFd(int fd)
{
MwsQuery_SaxUserData user_data;
xmlSAXHandler saxHandler;
xmlParserCtxtPtr ctxtPtr;
int ret;
// Initializing the SAX Handler
memset(&saxHandler, 0, sizeof(xmlSAXHandler));
// Registering Sax callbacks with defined ones
//internalSubsetSAXFunc internalSubset;
//isStandaloneSAXFunc isStandalone;
//hasInternalSubsetSAXFunc hasInternalSubset;
//hasExternalSubsetSAXFunc hasExternalSubset;
//resolveEntitySAXFunc resolveEntity;
saxHandler.getEntity = my_getEntity; // STUB
//entityDeclSAXFunc entityDecl;
//notationDeclSAXFunc notationDecl;
//attributeDeclSAXFunc attributeDecl;
//elementDeclSAXFunc elementDecl;
//unparsedEntityDeclSAXFunc unparsedEntityDecl;
//setDocumentLocatorSAXFunc setDocumentLocator;
saxHandler.startDocument = my_startDocument;
saxHandler.endDocument = my_endDocument;
saxHandler.startElement = my_startElement;
saxHandler.endElement = my_endElement;
//referenceSAXFunc reference;
saxHandler.characters = my_characters;
//ignorableWhitespaceSAXFunc ignorableWhitespace;
//processingInstructionSAXFunc processingInstruction;
//commentSAXFunc comment;
saxHandler.warning = my_warning;
saxHandler.error = my_error;
saxHandler.fatalError = my_fatalError;
// Locking libXML -- to allow multi-threaded use
xmlLockLibrary();
// Creating the IOParser context
ctxtPtr = xmlCreateIOParserCtxt(&saxHandler,
&user_data,
fdXmlInputReadCallback,
NULL,
&fd,
XML_CHAR_ENCODING_UTF8);
if (ctxtPtr == NULL)
{
fprintf(stderr, "Error while creating the ParserContext\n");
xmlUnlockLibrary();
return NULL;
}
ret = xmlParseDocument(ctxtPtr);
if (ret == -1)
{
fprintf(stderr, "Parsing failed\n");
}
if (!ctxtPtr->wellFormed)
{
fprintf(stderr, "Bad XML document\n");
}
// Freeing the parser context
xmlFreeParserCtxt(ctxtPtr);
// Unlocking libXML -- to allow multi-threaded use
xmlUnlockLibrary();
return user_data.result;
}
string
verifyMwsMessageTypeFromFd(int fd)
{
#ifdef TRACE_FUNC_CALLS
LOG_TRACE_IN;
#endif
MwsMessage_SaxUserData user_data;
xmlSAXHandler saxHandler;
xmlParserCtxtPtr ctxtPtr;
int ret;
// Initializing the SAX Handler
memset(&saxHandler, 0, sizeof(xmlSAXHandler));
// Registering Sax callbacks with defined ones
//internalSubsetSAXFunc internalSubset;
//isStandaloneSAXFunc isStandalone;
//hasInternalSubsetSAXFunc hasInternalSubset;
//hasExternalSubsetSAXFunc hasExternalSubset;
//resolveEntitySAXFunc resolveEntity;
//saxHandler.getEntity = my_getEntity; // STUB
//entityDeclSAXFunc entityDecl;
//notationDeclSAXFunc notationDecl;
//attributeDeclSAXFunc attributeDecl;
//elementDeclSAXFunc elementDecl;
//unparsedEntityDeclSAXFunc unparsedEntityDecl;
//setDocumentLocatorSAXFunc setDocumentLocator;
saxHandler.startDocument = my_startDocument;
//saxHandler.endDocument = my_endDocument;
saxHandler.startElement = my_startElement;
//saxHandler.endElement = my_endElement;
//referenceSAXFunc reference;
//saxHandler.characters = my_characters;
//ignorableWhitespaceSAXFunc ignorableWhitespace;
//processingInstructionSAXFunc processingInstruction;
//commentSAXFunc comment;
//saxHandler.warning = my_warning;
//saxHandler.error = my_error;
//saxHandler.fatalError = my_fatalError;
// Locking libXML -- to allow multi-threaded use
xmlLockLibrary();
// Creating the IOParser context
if ((ctxtPtr = xmlCreateIOParserCtxt(&saxHandler,
&user_data,
fdXmlInputReadCallback,
NULL,
&fd,
XML_CHAR_ENCODING_UTF8))
== NULL)
{
fprintf(stderr, "Error while creating the ParserContext\n");
}
// Parsing the document
else if ((ret = xmlParseDocument(ctxtPtr))
== -1)
{
fprintf(stderr, "Parsing XML document failed\n");
}
// Freeing the parser context
if (ctxtPtr)
xmlFreeParserCtxt(ctxtPtr);
// Unlocking libXML -- to allow multi-threaded use
xmlUnlockLibrary();
// Checking for found messages
if (!user_data.messageTypeFound)
{
fprintf(stderr, "The message is not a known MWS message type\n");
}
#ifdef TRACE_FUNC_CALLS
LOG_TRACE_OUT;
#endif
return user_data.messageType;
}
