/* Barebones IRC Skeleton */

#include <stdio.h> 	/* printf() */
#include <sys/socket.h> /* socket(), connect(), send(), recv() */
#include <arpa/inet.h>  /* sockaddr_in, inet_addr() */
#include <stdlib.h>	/* atoi() */
#include <string.h>	/* memset() */
#include <unistd.h>	/* close() */

void DieWithError(char *errorMsg); /* prints error msg and exits */

int main( int argc, char *argv[] )
{
	int sock;				/* the socket */
	int inCommand;				/* internal commands *not sent to server* */
	struct sockaddr_in ircServerAddr;	/* irc server address */
	unsigned short ircServerPort;		/* irc server port */
	char *serverIp;				/* x.x.x.x */
	char *sendMsg;				/* string to send to irc server */
	unsigned int sendMsgLen;		/* len of send message */
	
	if ((argc < 2) || (argc > 3))
	{
		fprintf(stderr, "Usage: %s <IRC Server IP> [port]\n", argv[0]);
		exit(1);
	}
	
	serverIp = argv[1]; 			/* first arg; required server ip */
	
	if (argc == 3)
		ircServerPort = atoi(argv[2]);	/* use provided port */
	else
		ircServerPort = 6667;		/* or use standard irc port */
	
	/* create socket */
	if ((sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0)
		DieWithError("couldn't make socket");
		
	/* fill ircServerAddr struct */
	memset(&ircServerAddr, 0, sizeof(ircServerAddr)); 	/* zero the struct */
	ircServerAddr.sin_family	= AF_INET;		/* internet address family */
	ircServerAddr.sin_addr.s_addr	= inet_addr(serverIp);  /* server ip */
	ircServerAddr.sin_port		= htons(ircServerPort); /* http://retran.com/beej/htonsman.html */
	
	/* connect to the IRC server */
	if (connect(sock, (struct sockaddr *) &ircServerAddr, sizeof(ircServerAddr)) < 0)
		DieWithError("couldn't connect to serv");
						   
	sendMsg = "USER Ceegie Ceegie Ceegie :Ceegie\r\nNICK Ceegie\r\nJOIN #LLJKLLJK\r\n";
	sendMsgLen = strlen(sendMsg);				/* size up the send message */
	
	/* send the string to the server */
	if (send(sock, sendMsg, sendMsgLen, 0) != sendMsgLen)
		DieWithError("unexpected number of bytes sent");
		
	/*and close w/out sending QUIT :hurrrrr*/
	close(sock);
}

void DieWithError(char *errorMsg)
{
    fprintf(stderr, "%s\n", errorMsg);
    exit(1);
}