From 438e3b52394e2936f6e286e0cddaaf4d41125324 Mon Sep 17 00:00:00 2001
From: Endi Sukma Dewata <edewata@redhat.com>
Date: Wed, 20 Feb 2013 12:40:28 -0500
Subject: WIP

---
 .../java/org/dogtagpki/javacard/ProxyApplet.java   | 116 +++++++++++++++++++++
 1 file changed, 116 insertions(+)
 create mode 100644 base/javacard/src/java/org/dogtagpki/javacard/ProxyApplet.java

(limited to 'base/javacard/src/java/org/dogtagpki/javacard/ProxyApplet.java')

diff --git a/base/javacard/src/java/org/dogtagpki/javacard/ProxyApplet.java b/base/javacard/src/java/org/dogtagpki/javacard/ProxyApplet.java
new file mode 100644
index 000000000..fd6c9d405
--- /dev/null
+++ b/base/javacard/src/java/org/dogtagpki/javacard/ProxyApplet.java
@@ -0,0 +1,116 @@
+package org.dogtagpki.javacard;
+
+import javacard.framework.*;
+
+/**
+ * @author Endi Sukma Dewata
+ */
+public class ProxyApplet extends Applet implements MultiSelectable {
+
+    private final static byte[] TEST_APPLET_AID = {(byte) 0xa0, 0x00, 0x00, 0x00, 0x62, 0x03, 0x01, 0x0c, 0x01, 0x01 };
+
+    private final static byte SAY_HELLO_INS = (byte) 0x01;
+    private final static byte SAY_ECHO2_INS = (byte) 0x03;
+    private final static byte SAY_IPARAMS_INS = (byte) 0x04;
+    private final static byte NOP_INS = (byte) 0x02;
+
+    private static byte[] helloMessage = new byte[] {
+        'P', 'r', 'o', 'x', 'y',
+        'A', 'p', 'p', 'l', 'e', 't'
+    };
+
+    private byte[] echoBytes;
+    private byte[] initParamsBytes;
+    private static final short LENGTH_ECHO_BYTES = 256;
+
+    protected ProxyApplet(byte[] bArray, short bOffset, byte bLength) {
+        echoBytes = new byte[LENGTH_ECHO_BYTES];
+        if (bLength > 0) {
+            byte iLen = bArray[bOffset]; // aid length
+            bOffset = (short) (bOffset + iLen + 1);
+            byte cLen = bArray[bOffset]; // info length
+            bOffset = (short) (bOffset + cLen + 1);
+            byte aLen = bArray[bOffset]; // applet data length
+            initParamsBytes = new byte[aLen];
+            Util.arrayCopyNonAtomic(bArray, (short) (bOffset + 1), initParamsBytes, (short) 0, aLen);
+        }
+        register();
+    }
+
+    public static void install(byte[] bArray, short bOffset, byte bLength)
+            throws ISOException {
+        new ProxyApplet(bArray, bOffset,bLength);
+    }
+
+    public void process(APDU apdu) {
+        if(selectingApplet()) return;
+
+        byte[] buffer = apdu.getBuffer();
+        switch (buffer[ISO7816.OFFSET_INS]) {
+            case SAY_HELLO_INS:
+                sayHello(apdu);
+                return;
+            case SAY_ECHO2_INS:
+                sayEcho2(apdu);
+                return;
+            case SAY_IPARAMS_INS:
+                sayIParams(apdu);
+                return;
+            case NOP_INS:
+                return;
+            default:
+                ISOException.throwIt(ISO7816.SW_INS_NOT_SUPPORTED);
+        }
+        return;
+    }
+
+    private void sayHello(APDU apdu) {
+        byte[] buffer = apdu.getBuffer();
+        short incomeBytes = apdu.setIncomingAndReceive();
+        byte[] echo;
+
+        if (buffer[ISO7816.OFFSET_P1] == 0x01) {
+            echo = JCSystem.makeTransientByteArray(incomeBytes, JCSystem.CLEAR_ON_RESET);
+            Util.arrayCopyNonAtomic(buffer, ISO7816.OFFSET_CDATA, echo, (short) 0, incomeBytes);
+        } else {
+            echo = JCSystem.makeTransientByteArray((short) helloMessage.length, JCSystem.CLEAR_ON_RESET);
+            Util.arrayCopyNonAtomic(helloMessage, (short) 0, echo, (short) 0, (short) helloMessage.length);
+        }
+
+        apdu.setOutgoing();
+        apdu.setOutgoingLength((short) echo.length);
+        apdu.sendBytesLong(echo, (short) 0, (short) echo.length);
+    }
+
+    private void sayEcho2(APDU apdu) {
+        byte buffer[] = apdu.getBuffer();
+        short bytesRead = apdu.setIncomingAndReceive();
+        short echoOffset = (short) 0;
+
+        while (bytesRead > 0) {
+            Util.arrayCopyNonAtomic(buffer, ISO7816.OFFSET_CDATA, echoBytes, echoOffset, bytesRead);
+            echoOffset += bytesRead;
+            bytesRead = apdu.receiveBytes(ISO7816.OFFSET_CDATA);
+        }
+
+        apdu.setOutgoing();
+        apdu.setOutgoingLength((short) (echoOffset + 5));
+
+        apdu.sendBytes((short) 0, (short) 5);
+        apdu.sendBytesLong(echoBytes, (short) 0, echoOffset);
+    }
+
+    private void sayIParams(APDU apdu) {
+        AID aid = JCSystem.lookupAID(TEST_APPLET_AID, (short)0, (byte)TEST_APPLET_AID.length);
+        TestShareable shareable = (TestShareable)JCSystem.getAppletShareableInterfaceObject(aid, (byte)0);
+
+        shareable.sayIParams(apdu);
+    }
+
+    public boolean select(boolean b) {
+        return true;
+    }
+
+    public void deselect(boolean b) {
+    }
+}
-- 
cgit