/** string FXMLElement::getValueFromPath(string path);
*
* Added by cmicali
* Purpose: get the value of the node referenced by the dot-path notation
* example:
*
* <config>
* <general>
* <size>50</size>
* <general>
* </config>
*
* FXMLElement *n = fxml.ParseFile("abovefile.xml");
* // n is now a pointer to root node "config"
* std::string s = n->getValueFromPath("general.size");
* // String s now is "50"
*/
std::string FXMLElement::getValueFromPath(std::string path) {
int f = path.find(".",0);
int o = 0;
std::list<std::string> l;
path = path + ".";
while (f != std::string::npos) {
std::string s = path.substr(o,f-o);
if (s != "")
l.push_back(s);
o = f+1;
f = path.find(".", o);;
}
std::list<std::string>::const_iterator iter;
iter=l.begin();
if (iter != l.end()) {
std::string s = (*iter);
FXMLElement *n = findChild(this, s);
iter++;
if (!n) return "";
for (; iter != l.end(); iter++) {
s = (*iter);
n = findChild(n, s);
if (!n) return "";
}
return n->Value();
}
return "";
}
FXMLElement* FXMLParser::ParseElement(std::string sCurInput, long* nLoc, long* nLineCount)
{
int nMode = PARSE_MODE_NONE; //set the initial mode
std::string sWord(""); //set the current word read
char ch; //current character read
std::string sAttributeName; //attribute name to save
int nSpecialMode; //if parsing comments, used to save old mode
FXMLElement *fxInput = NULL;
FXMLElement *fxChild = NULL;
std::string sElementName; //element name, to be used for error checking
//parse the line a char at a time
for (long i = (*nLoc); i < sCurInput.length(); i++)
{
ch = sCurInput.at(i);
if (ch == '<')
{
//parse the start of new elements
if (nMode == PARSE_MODE_NONE)
{
//the beginning of an element
nMode = PARSE_MODE_ELEMENT_PROVISIONAL;
//create a new input element
if (fxInput == NULL)
{
fxInput = new FXMLElement;
fxInput->fxParent = NULL;
}
}
else if ((nMode == PARSE_MODE_ELEMENT_DATA) || (nMode == PARSE_MODE_CDATA_END))
{
nMode = PARSE_MODE_END_PROVISIONAL;
//see if this is the last element or not
if (sCurInput.at(i + 1) == '/')
{
//it is a last element, set mode
fxInput->Value(sWord);
nMode = PARSE_MODE_END;
sWord.erase();
}
else
{
//if not last element, perform recursive call
if (fxInput->mChildren == NULL)
fxInput->mChildren = new std::list<FXMLElement*>;
fxChild = ParseElement(sCurInput, &i, nLineCount);
if (fxChild != NULL)
{
fxChild->fxParent = fxInput;
//V 0.92 Elements now in order thanks to
//Max Belugin - [email protected]
fxInput->mChildren->push_back(fxChild);
}
//set mode, initialize sWord with existing data
nMode = PARSE_MODE_ELEMENT_DATA;
//V0.93 removed - to be fixed later
//sWord = fxInput->Value();
}
}
else if (nMode == PARSE_MODE_CDATA)
{
sWord.append(1, ch);
}
}
else if ((ch == ' ') || (ch == '\n') || (ch == '\r') || (ch == '\t'))
{
//if in element data, add it. Else end state
//also, do not add newlines or spaces to data
if (nMode == PARSE_MODE_ELEMENT_DATA)
{
if (sWord.length() > 0) sWord.append(1,ch);
}
else if ((nMode == PARSE_MODE_CDATA) || (nMode == PARSE_MODE_ATTRIBUTE_VALUE))
//V 0.92 Attribute values with spaces now valid thanks to Max Belugin - [email protected]
sWord.append(1, ch);
else if (nMode == PARSE_MODE_ELEMENT_NAME)
{
//set the element name
sElementName = sWord;
fxInput->Name(sWord);
sWord.erase();
//now set to look for attributes
nMode = PARSE_MODE_ATTRIBUTE_PROVISIONAL;
}
//increment line count if \n
if (ch == '\n') (*nLineCount)++;
}
else if ((ch == '?') || (ch == '!'))
{
//its a comment or declaration. For this version
//of the parser, ignore them
if (nMode == PARSE_MODE_ELEMENT_PROVISIONAL)
{
//save the old mode
nSpecialMode = nMode;
nMode = PARSE_MODE_SPECIAL;
}
}
else if (ch == '[')
{
//look out for cdata tags
if (nMode == PARSE_MODE_SPECIAL)
{
if (sCurInput.substr(i+1, 5).compare("CDATA") == 0)
nMode = PARSE_MODE_CDATA_PROVISIONAL;
}
else if (nMode == PARSE_MODE_CDATA_PROVISIONAL)
{
sWord.erase();
nMode = PARSE_MODE_CDATA;
}
else
sWord.append(1, ch);
}
else if (ch == ']')
{
//look for end of CDATA
if (nMode == PARSE_MODE_CDATA)
nMode = PARSE_MODE_CDATA_END_PROVISIONAL;
else if (nMode == PARSE_MODE_CDATA_END_PROVISIONAL)
nMode = PARSE_MODE_CDATA_END;
else
sWord.append(1, ch);
}
else if (ch == '>')
{
//end of element name
if (nMode == PARSE_MODE_ELEMENT_NAME)
{
//set the element name
sElementName = sWord;
fxInput->Name(sWord);
sWord.erase();
//now set more to look for element data
nMode = PARSE_MODE_ELEMENT_DATA;
}
else if (nMode == PARSE_MODE_ATTRIBUTE_PROVISIONAL)
{
//attribute parsing over, prepare to parse element data
sWord.erase();
nMode = PARSE_MODE_ELEMENT_DATA;
}
else if (nMode == PARSE_MODE_END)
{
//end of the element
//only compare IF sWord.length > 0
if (sWord.length() > 0)
{
if (sWord.compare(sElementName) != 0)
{
//parse error!!!
//V0.93 handle parse errors nicely!
char* cError = (char*)malloc(6);
sprintf(cError, "%d", (*nLineCount));
sError = (std::string)"FXML reports parsing error. Unmatched tag: Expecting " +
sElementName + (std::string)" but encountered " + sWord + (std::string)" at line: " + cError;
free(cError);
delete fxInput;
fxInput = NULL;
}
}
//V0.93
//do NOT skip ahead one if xml file stuffed together
//handles <xml>blah</xml><more>data</more> correctly
//parse element data
sWord.erase();
if (sCurInput.length() > (i + 1))
{
if ((sCurInput.at(i + 1) =='\n') ||
(sCurInput.at(i + 1) =='\r'))
{
(*nLoc) = i + 1;
}
else
(*nLoc) = i;
}
else
(*nLoc) = i;
return fxInput;
}
else if (nMode == PARSE_MODE_SPECIAL)
{
//end of a special element, reset the mode
nMode = nSpecialMode;
}
else if (nMode == PARSE_MODE_CDATA)
{
sWord.append(1, ch);
}
}
else if (ch == '/')
{
//handle elements such as <blah ..... />
if (nMode == PARSE_MODE_ATTRIBUTE_PROVISIONAL)
{
nMode = PARSE_MODE_END;
}
else if ((nMode != PARSE_MODE_SPECIAL) && (nMode != PARSE_MODE_END))
sWord.append(1, ch);
}
else if (ch == '=')
{
//parsing of attributes
if (nMode == PARSE_MODE_ATTRIBUTE_NAME)
{
//set the attribute name
sAttributeName = sWord;
sWord.erase();
//set the mode
nMode = PARSE_MODE_ATTRIBUTE_VALUE_PROVISIONAL;
}
else if (nMode != PARSE_MODE_SPECIAL)
sWord.append(1, ch);
}
else if ((ch == '"') || (ch == '\''))
{
//parsing of attributes
if (nMode == PARSE_MODE_ATTRIBUTE_VALUE_PROVISIONAL)
{
nMode = PARSE_MODE_ATTRIBUTE_VALUE;
}
else if (nMode == PARSE_MODE_ATTRIBUTE_VALUE)
{
//save the pair
fxInput->SetAttributePair(sAttributeName, sWord);
//erase
sWord.erase();
sAttributeName.erase();
//set new mode
nMode = PARSE_MODE_ATTRIBUTE_PROVISIONAL;
}
else if (nMode != PARSE_MODE_SPECIAL)
sWord.append(1, ch);
}
else
{
//parsing of straight text/words
if (nMode == PARSE_MODE_ELEMENT_PROVISIONAL)
nMode = PARSE_MODE_ELEMENT_NAME;
else if (nMode == PARSE_MODE_ATTRIBUTE_PROVISIONAL)
nMode = PARSE_MODE_ATTRIBUTE_NAME;
//ignore comments and special declarations
if ((nMode != PARSE_MODE_SPECIAL) && (nMode != PARSE_MODE_CDATA_END))
sWord.append(1, ch);
}
}
return NULL;
}
///////////////////////////////////////////////////////
//
// Name: ReadAndWriteSocket
// Params: sd - socket to read/write from
// Returns: BOOLEAN success
// Description: Reads XML query from socket, writes
// XML result set
///////////////////////////////////////////////////////
bool ReadAndWriteSocket(SOCKET sd)
{
// Read data from client
char acReadBuffer[kBufferSize];
int nReadBytes = 0; //number of bytes read
std::string sRead, sTemp, sResult; //string to read, and result
int nFind; //result var
BOOL bAllDone = FALSE;//whether the transaction is finished or not
//variables for setting up timeout
fd_set read_fds;
struct timeval TimeOut;
FD_ZERO(&read_fds);
FD_SET(sd, &read_fds);
TimeOut.tv_sec = gnThreadTimeout; //use timeout of durartion gnThreadTimeout
TimeOut.tv_usec = 0;
try
{
if (select(FD_SETSIZE, &read_fds, NULL, NULL, &TimeOut) != SOCKET_ERROR)
{
if (FD_ISSET(sd, &read_fds))
{
do {
nReadBytes = recv(sd, acReadBuffer, kBufferSize, 0);
if (nReadBytes > 0) {
LogEvent("ReadWriteSocket reports receiving client data", 1);
//copy over inbound buffer
sTemp = acReadBuffer;
sRead.append(sTemp.substr(0,nReadBytes));
sTemp.erase();
//search for the end of XML. If found, we have received
//all data. If not found, keep receiving data
nFind = sRead.find("</request>");
if (nFind > 0)
{
//parse out request
FXMLParser fxParse; //xml parser
FXMLElement *fxElem = NULL;
try
{
fxElem = fxParse.ParseString(sRead.c_str()); //parse string
}
catch(...)
{
LogEvent("ReadAndWriteSocket reports fXML Parser exception.", 2);
break;
}
FXMLElement *fxRet = NULL;
std::string sConnectionString, sSQL;
//if string is not XML , exit
if ((fxElem == NULL) || (fxParse.sError.length() > 0))
{
LogEvent("ReadWriteSocket reports receiving invalid XML string", 2);
break;
}
//get connection string
fxRet = FindChildByName("connectionstring", fxElem, fxElem->mChildren->begin());
if (fxRet != NULL)
sConnectionString = fxRet->Value();
else
{
LogEvent("ReadWriteSocket reports no connection string found.",2);
break;
}
fxRet = NULL;
//get SQL
fxRet = FindChildByName("sql", fxElem, fxElem->mChildren->begin());
if (fxRet != NULL)
sSQL = fxRet->Value();
else
{
LogEvent("ReadWriteSocket reports no SQL string found.",2);
break;
}
if ((sConnectionString.length() == 0) || (sSQL.length() == 0)) break;
//now sub in > for < , etc..
sSQL = SubStrReplace(sSQL, "<", "<" );
sSQL = SubStrReplace(sSQL, ">", ">");
sSQL = SubStrReplace(sSQL, "&", "&");
LogEvent(((std::string)"ReadWriteSocket reports executing SQL:" + sSQL).c_str(), 1);
//now execute SQL
sResult = ExecSQL(sConnectionString, sSQL);
//now send back response
nReadBytes = sResult.length();
int nSentBytes = 0;
while (nSentBytes < nReadBytes) {
nSentBytes = send(sd, sResult.c_str() + nSentBytes,
nReadBytes - nSentBytes, 0);
if (nSentBytes <= 0)
{
//closed connection or something
LogEvent("ReadWriteSocket reports no data to return", 1);
break;
}
}//while
bAllDone = TRUE;
sRead = "";
} //nfind > 0
//look for termination request
}//nreadbytes > 0
} while ((nReadBytes > 0) && (!bAllDone));
}//FD_ISSET
}//select
else if (nReadBytes == SOCKET_ERROR) {
LogEvent("ReadWriteSocket reports socket error after data return. Not necessarily a problem.", 1);
}
if (!bAllDone) LogEvent("ReadWriteSocket reports invalid data received, no SQL executed.", 2);
}
catch(...)
{
LogEvent("ReadAndWriteSocket reports fatal exception reading data.",2);
}
try
{
SOCKETMAP::iterator iSocket; //socket iterator
if (ShutdownConnection(sd)) {
LogEvent("ReadAndWriteSocket reports closing connection", 1);
}
else {
LogEvent(WSAGetLastErrorMessage("shutdown connection"),2);
}
EnterCriticalSection(&gcsLock);
try
{
iSocket = gmSockets.find(sd);
gmSockets.erase(iSocket);
}
catch(...)
{
}
LeaveCriticalSection(&gcsLock);
}
catch(...)
{
LogEvent("ReadAndWriteSocket reports fatal exception closing connection.",2);
}
return true;
}
