//-------------------------------------------------------------------
//	getquote.cpp
//
//	This program reimplements using C++ the functionality of our 
//	earlier Python demo-program named 'getquote.py', affording a
//	better view of the underlying 'sockets' programing interface
//	which the Python language intentionally 'hides' from a user. 
//
//	     compile using:  $ g++ getquote.cpp -o getquote
//	     execute using:  $ ./getquote
//
//	programmer: ALLAN CRUSE
//	date begun: 27 JAN 2009
//	completion: 28 JAN 2009
//	revised on: 03 FEB 2009 
//-------------------------------------------------------------------

#include <netdb.h>	// for gethostbyname()
#include <stdio.h>	// for printf(), perror() 
#include <string.h>	// for bzero(), bcopy(), strtok()
#include <stdlib.h>	// for exit() 

int main( int argc, char **argv )
{
	char	host[] = "download.finance.yahoo.com";
	int	port = 80;

	int	sock = socket( AF_INET, SOCK_STREAM, IPPROTO_IP );
	if ( sock < 0) { perror( "socket" ); exit(1); }

	struct timeval	tval = { 1, 0 } ;
	socklen_t 	tlen = sizeof( tval );
	if ( setsockopt( sock, SOL_SOCKET, SO_RCVTIMEO, &tval, tlen ) < 0 )
		{ perror( "setsockopt" ); exit(1); }

	struct hostent	*hp = gethostbyname( host );
	if ( !hp ) { herror( "gethostbyname" ); exit(1); }

	struct sockaddr_in	saddr;
	socklen_t		salen = sizeof( saddr );
	bzero( &saddr, salen );
	saddr.sin_family = AF_INET;
	saddr.sin_port = htons( port );
	bcopy( hp->h_addr, &saddr.sin_addr, hp->h_length ); 

	if ( connect( sock, (sockaddr*)&saddr, salen ) < 0 )
		{ perror( "connect" ); exit(1); }
		
	char	msg[] = "GET /d/quotes.cvs?s=INTC&f=sl1d1t1c1ohgv&e=.csv \r\n";
	int	mlen = strlen( msg );
	if ( send( sock, msg, mlen, 0 ) < 0 ) { perror( "send" ); exit(1); }
	if ( send( sock, "\r\n", 2, 0 ) < 0 ) { perror( "send" ); exit(1); }

	char	buf[ 4096 ] = {0};
	if ( recv( sock, buf, 4096, 0 ) < 0 ) { perror( "recv" ); exit(1); }
	
	char	*quote[ 9 ];
	quote[ 0 ] = strtok( buf, ",\n" );
	for (int i = 1; i < 9; i++) quote[ i ] = strtok( NULL, ",\n" );

	printf( "\n" );
	printf( "Intel Stock: $%s at %s on %s\n", quote[1],quote[3],quote[2] );
	printf( "\n" );
}