ExtFunc void CloseNet(void)
{
MyEvent event;
if (sock >= 0) {
if (!lostConn) {
SendPacket(NP_endConn, 0, NULL);
if (isServer) {
while (!lostConn)
WaitMyEvent(&event, EM_net);
}
else {
while (!gotEndConn)
WaitMyEvent(&event, EM_net);
SendPacket(NP_byeBye, 0, NULL);
}
}
close(sock);
sock = -1;
}
if (netGen.next)
RemoveEventGen(&netGen);
}
ExtFunc void InitRobot(char *robotProg)
{
int to[2], from[2];
int status;
MyEvent event;
signal(SIGPIPE, CatchPipe);
AtExit(CloseRobot);
if (pipe(to) || pipe(from))
die("pipe");
robotProcess = fork();
if (robotProcess < 0)
die("fork");
if (robotProcess == 0) {
dup2(to[0], STDIN_FILENO);
dup2(from[1], STDOUT_FILENO);
close(to[0]);
close(to[1]);
close(from[0]);
close(from[1]);
execl("/bin/sh", "sh", "-c", robotProg, NULL);
die("execl failed");
}
close(to[0]);
close(from[1]);
toRobotFd = to[1];
robotGen.fd = fromRobotFd = from[0];
if (!(toRobot = fdopen(toRobotFd, "w")))
die("fdopen");
if ((status = fcntl(fromRobotFd, F_GETFL, 0)) < 0)
die("fcntl/F_GETFL");
status |= O_NONBLOCK;
if (fcntl(fromRobotFd, F_SETFL, status) < 0)
die("fcntl/F_SETFL");
AddEventGen(&robotGen);
RobotCmd(1, "Version %d\n", ROBOT_VERSION);
if (WaitMyEvent(&event, EM_robot) != E_robot)
fatal("Robot didn't start successfully");
if (1 > sscanf(event.u.robot.data, "Version %d", &robotVersion)
|| robotVersion < 1)
fatal("Invalid Version line from robot");
if (robotVersion > ROBOT_VERSION)
robotVersion = ROBOT_VERSION;
}
