How to write a FTP request

char    *command[] =    //these are the commands we send to ftp server
{
        "USER anonymous\r\n",   
        "PASS asdf@aol.com\r\n",
        "PASV\r\n",             //passive mode for firewalls
        "STOR file\r\n"         //put the file onto the server
};

case 2:         //PASV command; this causes the server to send us the port number
                                        //that it opens for us to connect to, we log this for the next command
                                if( (buf[0] == '4') || (buf[0] == '5') )
                                {
                                        printf(buf);    
                                        return 0;       
                                }

                                //parse the reply and extract port number; format: (195,167,65,228,9,170).
                                //start from the end and count 3 commas to get here--------------/
                                //then add 2 to that to point at first byte of port (network byte ordered)
                                y = 0;
                                len = strlen(buf);
                                tmp = buf + len - 1;    //the last nonNULL byte of buffer
                                
                                while(y < 3)    //find 2 ',' and 1 ')'
                                {
                                        if( (tmp != NULL) && ( (*tmp == ',') || (*tmp == ')')) )//sanity check b4 dereference
                                        {       
                                                y++;    
                                                *tmp = '\0';    //null terminate to make tokens
                                        }
                                        tmp--;
                                }       //now tmp points 2 bytes behind start of port byte one
                                        
                                tmp += 2;       //move back to first byte of port
                                *port       = (u_char)(atoi(tmp));      //this is byte one
                                *(port + 1) = (u_char)(atoi(tmp + strlen(tmp) + 1));    //byte two
                                da_port =  *(unsigned short *)port;     //the port in n0rdered port 
                                
                                break;