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/*************************************************************************
* *
* EJBCA Community: The OpenSource Certificate Authority *
* *
* This software is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Lesser General Public *
* License as published by the Free Software Foundation; either *
* version 2.1 of the License, or any later version. *
* *
* See terms of license at gnu.org. *
* *
*************************************************************************/
package org.cesecore.keys.token.p11;
import java.io.File;
import java.io.IOException;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import org.apache.log4j.Logger;
/**
*
* This class wraps sun.security.pkcs11.wrapper.PKCS11, so that we can access the native PKCS11 calls
* directly.
* A slot list and token labels for each slot is cached so that C_GetSlotList() only has to be called once and
* so that C_GetTokenInfo() only has to be called once for each slot.
*
* The {@link #getInstance(File)} method must be called before any PKCS#11 provider is created.
*
* @version $Id: Pkcs11Wrapper.java 27614 2017-12-21 08:55:51Z bastianf $
*
*/
public class Pkcs11Wrapper {
private static final Logger log = Logger.getLogger(Pkcs11Wrapper.class);
private static volatile Map instances = new HashMap();
private static final Lock lock = new ReentrantLock();
private final Method getSlotListMethod;
private final Method getTokenInfoMethod;
private final Field labelField;
private final Object p11;
private final HashMap labelMap;
private final long slotList[];
private Pkcs11Wrapper(final String fileName) {
final Class p11Class;
try {
p11Class = Class.forName("sun.security.pkcs11.wrapper.PKCS11");
} catch (ClassNotFoundException e) {
String msg = "Class sun.security.pkcs11.wrapper.PKCS11 was not found locally, could not wrap.";
log.error(msg, e);
throw new IllegalStateException(msg, e);
}
try {
this.getSlotListMethod = p11Class.getDeclaredMethod("C_GetSlotList", new Class[] { boolean.class });
} catch (NoSuchMethodException e) {
String msg = "Method C_GetSlotList was not found in class sun.security.pkcs11.wrapper.PKCS11, this may be due to"
+ " a change in the underlying library.";
log.error(msg, e);
throw new IllegalStateException(msg, e);
} catch (SecurityException e) {
String msg = "Access was denied to method sun.security.pkcs11.wrapper.PKCS11.C_GetSlotList";
log.error(msg, e);
throw new IllegalStateException(msg, e);
}
try {
this.getTokenInfoMethod = p11Class.getDeclaredMethod("C_GetTokenInfo", new Class[] { long.class });
} catch (NoSuchMethodException e) {
String msg = "Method C_GetTokenInfo was not found in class sun.security.pkcs11.wrapper.PKCS11, this may be due to"
+ " a change in the underlying library.";
log.error(msg, e);
throw new IllegalStateException(msg, e);
} catch (SecurityException e) {
String msg = "Access was denied to method sun.security.pkcs11.wrapper.PKCS11.C_GetTokenInfo";
log.error(msg, e);
throw new IllegalStateException(msg, e);
}
try {
this.labelField = Class.forName("sun.security.pkcs11.wrapper.CK_TOKEN_INFO").getField("label");
} catch (NoSuchFieldException e) {
String msg = "Field 'label' was not found in class sun.security.pkcs11.wrapper.CK_TOKEN_INFO, this may be due to"
+ " a change in the underlying library.";
log.error(msg, e);
throw new IllegalStateException(msg, e);
} catch (SecurityException e) {
String msg = "Access was denied to field sun.security.pkcs11.wrapper.CK_TOKEN_INFO.label";
log.error(msg, e);
throw new IllegalStateException(msg, e);
} catch (ClassNotFoundException e) {
String msg = "Class sun.security.pkcs11.wrapper.CK_TOKEN_INFO was not found locally, could not wrap.";
log.error(msg, e);
throw new IllegalStateException(msg, e);
}
final Method getInstanceMethod;
try {
getInstanceMethod = p11Class.getDeclaredMethod("getInstance",
new Class[] { String.class, String.class, Class.forName("sun.security.pkcs11.wrapper.CK_C_INITIALIZE_ARGS"), boolean.class });
} catch (NoSuchMethodException e) {
String msg = "Method getInstance was not found in class sun.security.pkcs11.wrapper.PKCS11.CK_C_INITIALIZE_ARGS, this may be due to"
+ " a change in the underlying library.";
log.error(msg, e);
throw new IllegalStateException(msg, e);
} catch (SecurityException e) {
String msg = "Access was denied to method sun.security.pkcs11.wrapper.CK_C_INITIALIZE_ARGS.getInstance";
log.error(msg, e);
throw new IllegalStateException(msg, e);
} catch (ClassNotFoundException e) {
String msg = "Class sun.security.pkcs11.wrapper.CK_C_INITIALIZE_ARGS was not found locally, could not wrap.";
log.error(msg, e);
throw new IllegalStateException(msg, e);
}
try {
this.p11 = getInstanceMethod.invoke(null, new Object[] { fileName, "C_GetFunctionList", null, Boolean.FALSE });
} catch (IllegalAccessException e) {
String msg = "Method sun.security.pkcs11.wrapper.PKCS11.CK_C_INITIALIZE_ARGS.getInstance was not accessible, this may be due to"
+ " a change in the underlying library.";
log.error(msg, e);
throw new IllegalStateException(msg, e);
} catch (IllegalArgumentException e) {
String msg = "Wrong arguments were passed to sun.security.pkcs11.wrapper.PKCS11.CK_C_INITIALIZE_ARGS.getInstance. This may be due to"
+ " a change in the underlying library.";
log.error(msg, e);
throw new IllegalStateException(msg, e);
} catch (InvocationTargetException e) {
String msg = "Wrong arguments were passed to sun.security.pkcs11.wrapper.PKCS11.CK_C_INITIALIZE_ARGS.getInstance threw an exception "
+ "for log.error(msg, e)";
log.error(msg, e);
throw new IllegalStateException(msg, e);
}
this.labelMap = new HashMap();
this.slotList = C_GetSlotList();
for( long id : this.slotList) {
this.labelMap.put(Long.valueOf(id), getTokenLabelLocal(id));
}
}
/**
* Get an instance of the class.
* @param the p11 .so file.
* @return the instance.
* @throws IllegalArgumentException
*/
public static Pkcs11Wrapper getInstance(final File file) throws IllegalArgumentException {
final String canonicalFileName;
try {
canonicalFileName = file.getCanonicalPath();
} catch (IOException e) {
throw new IllegalArgumentException(file+" is not a valid filename.",e );
}
{
final Pkcs11Wrapper storedP11 = instances.get(canonicalFileName);
if (storedP11 != null) {
return storedP11;// if instance exist we don't have to wait for lock just grab it.
}
}
try {
lock.lock();// wait for lock; some other tread might be creating the instance right now.
final Pkcs11Wrapper storedP11 = instances.get(canonicalFileName);
if (storedP11 != null) {
return storedP11;// some other thread had already created the instance
}
// no other thread has created the instance and no other will since this thread is locking.
Pkcs11SlotLabel.doC_Initialize(file);// C_Initialize with multithreading args.
final Pkcs11Wrapper newP11 = new Pkcs11Wrapper(canonicalFileName);
instances.put(canonicalFileName, newP11);
return newP11;
} finally {
lock.unlock();// now other threads might get the instance.
}
}
/**
* Get a list of p11 slot IDs to slots that has a token.
* @return the list.
*/
public long[] getSlotList() {
return this.slotList;
}
/**
* Get the token label of a specific slot ID.
* @param slotID the ID of the slot
* @return the token label, or null if no matching token was found.
*/
public char[] getTokenLabel(long slotID) {
return this.labelMap.get(Long.valueOf(slotID));
}
private long[] C_GetSlotList() {
try {
return (long[]) this.getSlotListMethod.invoke(this.p11, new Object[] { Boolean.TRUE });
} catch (IllegalAccessException e) {
String msg = "Access was denied to method sun.security.pkcs11.wrapper.PKCS11C.GetSlotList, this may be due to"
+ " a change in the underlying library.";
log.error(msg, e);
throw new IllegalStateException(msg, e);
} catch (IllegalArgumentException e) {
String msg = "Incorrect parameters sent to sun.security.pkcs11.wrapper.PKCS11C.GetSlotList, this may be due to"
+ " a change in the underlying library.";
log.error(msg, e);
throw new IllegalStateException(msg, e);
} catch (InvocationTargetException e) {
String msg = "Method sun.security.pkcs11.wrapper.PKCS11C.GetSlotList threw an unknown exception.";
log.error(msg, e);
throw new IllegalStateException(msg, e);
}
}
private char[] getTokenLabelLocal(long slotID) {
final Object tokenInfo;
try {
tokenInfo = this.getTokenInfoMethod.invoke(this.p11, new Object[] { Long.valueOf(slotID) });
} catch (IllegalAccessException e) {
String msg = "Access was denied to method sun.security.pkcs11.wrapper.PKCS11.C_GetTokenInfo, this may be due to"
+ " a change in the underlying library.";
log.error(msg, e);
throw new IllegalStateException(msg, e);
} catch (IllegalArgumentException e) {
String msg = "Incorrect parameters sent to sun.security.pkcs11.wrapper.PKCS11.C_GetTokenInfo, this may be due to"
+ " a change in the underlying library.";
log.error(msg, e);
throw new IllegalStateException(msg, e);
} catch (InvocationTargetException e) {
String msg = "Method sun.security.pkcs11.wrapper.PKCS11.C_GetTokenInfo threw an unknown exception.";
log.error(msg, e);
return null;
}
if (tokenInfo == null) {
return null;
}
try {
String result = String.copyValueOf((char[]) this.labelField.get(tokenInfo));
return result.trim().toCharArray();
} catch (IllegalArgumentException e) {
String msg = "Field sun.security.pkcs11.wrapper.PKCS11.C_GetTokenInfo was not of type sun.security.pkcs11.wrapper.CK_TOKEN_INFO"
+ ", this may be due to a change in the underlying library.";
log.error(msg, e);
throw new IllegalStateException(msg, e);
} catch (IllegalAccessException e) {
String msg = "Access was denied to field sun.security.pkcs11.wrapper.CK_TOKEN_INFO.label, this may be due to"
+ " a change in the underlying library.";
log.error(msg, e);
throw new IllegalStateException(msg, e);
}
}
}
