/* 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 CeegBot CeegBot CeegBot :CeegBot\r\nNICK CeegBot\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"); /* === at this point the bot is connected to the irc channel === and sitting quietly in a channel doing nothing assuming the nick wasn't taken you'll get kicked at the first PING though. i'm just trying to learn some basic sockets here ;) */ if ((inCommand = getchar()) == 'q') { sendMsg = "QUIT :byebye"; close(sock); exit(0); }}void DieWithError(char *errorMsg){ perror(errorMsg); exit(1);}