static void signal_handler(int sig) {
int i;
if (sig == SIGINT) {
printf("Caught signal for Ctrl+C\n");
exit(1);
}
if (sig == SIGTSTP) { // CTRL-z
printf("\n...................SSL Info........................\n");
printf("\n Current State: %d, ", cfg.sslC->state);
printf("Version Req = %d, %d\n", cfg.sslC->versionResp[0],
cfg.sslC->versionResp[1]);
printf(" cfg.sslC->sessionID: Len: %d, Value: ", cfg.sslC->sessionIDLen);
for (i=0;i<cfg.sslC->sessionIDLen;i++)
printf("%hhx ", cfg.sslC->sessionID[i]);
printf("\n Handshake Responses: ");
for (i=0;i<32;i++) {
if (cfg.sslC->handshakeResp & (1<<i)) {
printf("%s ", msgToString(i));
fflush(stdout);
}
}
}
printf("\n...................................................\n");
}
void CAsciiBufferLogger::logSent(const CByteBuffer& data)
{
std::cout << "Yadoms >>> " << msgToString(data) << std::endl;
}
/**
* Daemon entry point.
*/
int main(int argc, char** argv) {
int sock; // Listening UDP socket
// Options
char bDaemon=0,bOutputToNull=1;
bVerbose=0; // Set global verbosity option to false
// Program name (i.e. argv[0])
char* progName;
// Port to listen to (set to default)
unsigned short port = SSD_DEFAULT_PORT;
progName = argv[0]; // Note our program name
argc--; argv++; // ...and get rid of it
// Get all cmdline args
while (argc >= 1 && argv[0][0]=='-') {
switch (argv[0][1]) {
case 'v': bVerbose=1; break;
case 'O': bOutputToNull=0; break;
case 'd': bDaemon=1; break;
default: usage(progName); // Invalid argument, give the help message and exit
}
argc--; argv++; // Shift cmdline arguments to get rid of this option we just processed
}
// Check for port number on command line
if (argc == 1) {
port = atoi(argv[0]);
if (port == 0) {
fprintf(stderr,"Invalid port number '%s'!\n",argv[0]);
return EXIT_FAILURE;
}
} else if (argc > 1) {
usage(progName);
}
// Emit banner with options listing
printf(
TITLE "\n"
"\n"
"Options:\n"
" Verbose? : %s\n"
" Daemon? : %s\n"
" OutputToNull? : %s (daemon mode only)\n"
"\n",
tf(bVerbose),
tf(bDaemon),
tf(bOutputToNull));
// Read the gears file
if (readGears() != 0) {
fprintf(stderr,"Unable to read frequencies list from '%s'.\n",FILE_FREQ_LIST);
return EXIT_FAILURE;
}
// Emit the detected gears
printf("Gears:\n");
int i;
for (i=0; i<numGears; i++) {
printf(" [%d] %d MHz\n",i,gearSpeeds[i]/1000);
}
printf("\n");
// Become a daemon if we should
if (bDaemon) {
printf("Forking daemon...\n");
daemonize(bOutputToNull);
}
// Create UDP socket for listening
sock = makeUDPSocket(port);
printf("Up and running!\n");
while (1) { // Server loop
struct sockaddr_in addrOther;
SSDMessage msgIn,msgOut;
int result;
// Get next request
result = recvMessage(sock, &msgIn, &addrOther);
if (result != 0) {
printf("Error receiving message...\n");
continue;
}
if (bVerbose) printf("Got message %s.\n",msgToString(&msgIn));
// Handle it
char bValid;
switch (msgIn.type) {
case SSD_SET_SPEED:
// Determine if this is a valid gear
bValid = (msgIn.gear >= 0 && msgIn.gear < numGears);
// Prepare response
if (bValid) {
msgOut.type = SSD_ACK;
msgOut.gear = msgIn.gear;
msgOut.freqKHz = gearSpeeds[msgIn.gear];
} else {
msgOut.type = SSD_NAK;
msgOut.gear = -1;
msgOut.freqKHz = -1;
}
// Send response
if (bVerbose) printf("Sending response %s.\n",msgToString(&msgOut));
sendMessage(sock, &msgOut, &addrOther);
// Actually set gear
if (bValid) setSpeed(msgIn.gear);
break;
case SSD_GET_SPEED:
// Prepare response & check for validity
msgOut.gear = getSpeed();
bValid = (msgOut.gear >= 0 && msgOut.gear < numGears);
if (bValid) {
msgOut.type = SSD_ACK;
msgOut.freqKHz = gearSpeeds[msgOut.gear];
} else { // Error, send NAK
msgOut.type = SSD_NAK;
msgOut.gear = -1;
msgOut.freqKHz = -1;
}
// Send response
if (bVerbose) printf("Sending response %s.\n",msgToString(&msgOut));
sendMessage(sock, &msgOut, &addrOther);
break;
case SSD_ACK:
case SSD_NAK:
printf("Daemon got an ACK/NAK?!?\n");
break;
default:
printf("Daemon got message with invalid type %s.\n",msgToString(&msgIn));
}
}
// We never get here, but who cares
return EXIT_SUCCESS;
}
void CAsciiBufferLogger::logReceived(const CByteBuffer& data)
{
std::cout << "Yadoms <<< " << msgToString(data) << std::endl;
}
