char *replaceAll( const char *inHaystack, const char *inTarget,
const char *inSubstitute,
char *outFound ) {
// repeatedly replace once until replacing fails
char lastFound = true;
char atLeastOneFound = false;
char *returnString = stringDuplicate( inHaystack );
while( lastFound ) {
char *nextReturnString =
replaceOnce( returnString, inTarget, inSubstitute, &lastFound );
delete [] returnString;
returnString = nextReturnString;
if( lastFound ) {
atLeastOneFound = true;
}
}
*outFound = atLeastOneFound;
return returnString;
}
char *replaceTicketHash( char *inString ) {
const char *keyA = "sequence_number=";
const char *keyB = "ticket_hmac=";
if( inString == NULL ) {
return NULL;
}
else if( strstr( inString, keyA ) != NULL &&
strstr( inString, keyB ) != NULL ) {
// present
char *copy = stringDuplicate( inString );
char *startPointerA = strstr( copy, keyA );
char *startPointerB = strstr( copy, keyB );
char *hmacStart = &( startPointerB[ strlen( keyB ) ] );
int i = 0;
while( hmacStart[i] != '\0' &&
( ( hmacStart[i] >= '0' &&
hmacStart[i] <= '9' )
||
( hmacStart[i] >= 'A' &&
hmacStart[i] <= 'F' ) ) ) {
i++;
}
// truncate here, after end of hmac
hmacStart[i] = '\0';
// now startPointerA points to the full hash
char *newHash = getTicketHash();
char found;
char *newHashInPlace = replaceOnce( inString, startPointerA,
newHash,
&found );
delete [] newHash;
delete [] copy;
delete [] inString;
return newHashInPlace;
}
else {
// no hash present
char *result = stringDuplicate( inString );
delete [] inString;
return result;
}
}
// reads full request up to [END_REQUEST]
// returns result WITHOUT [END_REQUEST] marker at end
// returns NULL on failure
static char *readFullRequest( Socket *inSock ) {
char *readSoFar = stringDuplicate( "" );
char error = false;
while( !checkForEndMarker( readSoFar ) && ! error ) {
int numRead = inSock->receive( (unsigned char *)readBuffer,
READ_SIZE, 0 );
if( numRead >= 0 ) {
readBuffer[ numRead ] = '\0';
char *newReadSoFar = concatonate( readSoFar, readBuffer );
delete [] readSoFar;
readSoFar = newReadSoFar;
}
else if( numRead != -2 ) {
// not timeout, real error
error = true;
}
}
if( error ) {
return NULL;
}
char found;
char *message = replaceOnce( readSoFar, END_REQUEST,
"", &found);
delete [] readSoFar;
char *trimmedMessage = trimWhitespace( message );
delete [] message;
return trimmedMessage;
}
