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Simulate card removal and insertion by raising SIGUSR2 (when using vpcd) #159

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Simulate card removal and insertion by raising SIGUSR2 (when using vpcd) #159

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45 changes: 40 additions & 5 deletions src/main/java/com/licel/jcardsim/remote/VSmartCard.java
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,9 @@
import java.security.InvalidParameterException;
import java.util.Enumeration;
import java.util.Properties;
import java.net.SocketException;
import sun.misc.Signal;
import sun.misc.SignalHandler;

/**
* VSmartCard Card Implementation.
Expand All @@ -37,7 +40,7 @@ public class VSmartCard {
public VSmartCard(String host, int port) throws IOException {
VSmartCardTCPProtocol driverProtocol = new VSmartCardTCPProtocol();
driverProtocol.connect(host, port);
startThread(driverProtocol);
startThread(driverProtocol, host, port);
}

static public void main(String args[]) throws Exception {
Expand Down Expand Up @@ -80,9 +83,9 @@ static public void main(String args[]) throws Exception {
new VSmartCard(host, Integer.parseInt(port));
}

private void startThread(VSmartCardTCPProtocol driverProtocol) throws IOException {
private void startThread(VSmartCardTCPProtocol driverProtocol, String host, int port) throws IOException {
sim = new Simulator();
final IOThread ioThread = new IOThread(sim, driverProtocol);
final IOThread ioThread = new IOThread(sim, driverProtocol, host, port);
ShutDownHook hook = new ShutDownHook(ioThread);
Runtime.getRuntime().addShutdownHook(hook);
ioThread.start();
Expand All @@ -102,21 +105,33 @@ public void run() {
}
}

static class IOThread extends Thread {
static class IOThread extends Thread implements SignalHandler {
VSmartCardTCPProtocol driverProtocol;
Simulator sim;
boolean isRunning;
String host;
int port;
boolean inserted;

public IOThread(Simulator sim, VSmartCardTCPProtocol driverProtocol) {
public IOThread(Simulator sim, VSmartCardTCPProtocol driverProtocol, String host, int port) {
this.sim = sim;
this.driverProtocol = driverProtocol;
isRunning = true;
this.host = host;
this.port = port;
inserted = true;
Signal.handle(new Signal("USR2"), this);
}

@Override
public void run() {
while (isRunning) {
try {
if (!inserted) {
synchronized(this) {
wait();
}
}
int cmd = driverProtocol.readCommand();
switch (cmd) {
case VSmartCardTCPProtocol.POWER_ON:
Expand All @@ -132,6 +147,26 @@ public void run() {
driverProtocol.writeData(reply);
break;
}
} catch (SocketException e) {
if (!inserted)
sim.reset();
} catch (Exception e) {}
}
}

public void handle(Signal sig) {
if (inserted) {
inserted = false;
driverProtocol.disconnect();
System.out.println("Smartcard removed");
} else {
try {
driverProtocol.connect(host, port);
inserted = true;
synchronized(this) {
notify();
}
System.out.println("Smartcard inserted");
} catch (Exception e) {}
}
}
Expand Down