You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
608 lines
20 KiB
608 lines
20 KiB
/*
|
|
* Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
|
|
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*/
|
|
|
|
package java.security;
|
|
|
|
import sun.misc.IOUtils;
|
|
|
|
import java.io.IOException;
|
|
import java.io.ByteArrayInputStream;
|
|
import java.security.cert.Certificate;
|
|
import java.util.ArrayList;
|
|
import java.util.Hashtable;
|
|
import java.lang.reflect.*;
|
|
import java.security.cert.*;
|
|
import java.util.List;
|
|
|
|
/**
|
|
* The UnresolvedPermission class is used to hold Permissions that
|
|
* were "unresolved" when the Policy was initialized.
|
|
* An unresolved permission is one whose actual Permission class
|
|
* does not yet exist at the time the Policy is initialized (see below).
|
|
*
|
|
* <p>The policy for a Java runtime (specifying
|
|
* which permissions are available for code from various principals)
|
|
* is represented by a Policy object.
|
|
* Whenever a Policy is initialized or refreshed, Permission objects of
|
|
* appropriate classes are created for all permissions
|
|
* allowed by the Policy.
|
|
*
|
|
* <p>Many permission class types
|
|
* referenced by the policy configuration are ones that exist
|
|
* locally (i.e., ones that can be found on CLASSPATH).
|
|
* Objects for such permissions can be instantiated during
|
|
* Policy initialization. For example, it is always possible
|
|
* to instantiate a java.io.FilePermission, since the
|
|
* FilePermission class is found on the CLASSPATH.
|
|
*
|
|
* <p>Other permission classes may not yet exist during Policy
|
|
* initialization. For example, a referenced permission class may
|
|
* be in a JAR file that will later be loaded.
|
|
* For each such class, an UnresolvedPermission is instantiated.
|
|
* Thus, an UnresolvedPermission is essentially a "placeholder"
|
|
* containing information about the permission.
|
|
*
|
|
* <p>Later, when code calls AccessController.checkPermission
|
|
* on a permission of a type that was previously unresolved,
|
|
* but whose class has since been loaded, previously-unresolved
|
|
* permissions of that type are "resolved". That is,
|
|
* for each such UnresolvedPermission, a new object of
|
|
* the appropriate class type is instantiated, based on the
|
|
* information in the UnresolvedPermission.
|
|
*
|
|
* <p> To instantiate the new class, UnresolvedPermission assumes
|
|
* the class provides a zero, one, and/or two-argument constructor.
|
|
* The zero-argument constructor would be used to instantiate
|
|
* a permission without a name and without actions.
|
|
* A one-arg constructor is assumed to take a {@code String}
|
|
* name as input, and a two-arg constructor is assumed to take a
|
|
* {@code String} name and {@code String} actions
|
|
* as input. UnresolvedPermission may invoke a
|
|
* constructor with a {@code null} name and/or actions.
|
|
* If an appropriate permission constructor is not available,
|
|
* the UnresolvedPermission is ignored and the relevant permission
|
|
* will not be granted to executing code.
|
|
*
|
|
* <p> The newly created permission object replaces the
|
|
* UnresolvedPermission, which is removed.
|
|
*
|
|
* <p> Note that the {@code getName} method for an
|
|
* {@code UnresolvedPermission} returns the
|
|
* {@code type} (class name) for the underlying permission
|
|
* that has not been resolved.
|
|
*
|
|
* @see java.security.Permission
|
|
* @see java.security.Permissions
|
|
* @see java.security.PermissionCollection
|
|
* @see java.security.Policy
|
|
*
|
|
*
|
|
* @author Roland Schemers
|
|
*/
|
|
|
|
public final class UnresolvedPermission extends Permission
|
|
implements java.io.Serializable
|
|
{
|
|
|
|
private static final long serialVersionUID = -4821973115467008846L;
|
|
|
|
private static final sun.security.util.Debug debug =
|
|
sun.security.util.Debug.getInstance
|
|
("policy,access", "UnresolvedPermission");
|
|
|
|
/**
|
|
* The class name of the Permission class that will be
|
|
* created when this unresolved permission is resolved.
|
|
*
|
|
* @serial
|
|
*/
|
|
private String type;
|
|
|
|
/**
|
|
* The permission name.
|
|
*
|
|
* @serial
|
|
*/
|
|
private String name;
|
|
|
|
/**
|
|
* The actions of the permission.
|
|
*
|
|
* @serial
|
|
*/
|
|
private String actions;
|
|
|
|
private transient java.security.cert.Certificate certs[];
|
|
|
|
/**
|
|
* Creates a new UnresolvedPermission containing the permission
|
|
* information needed later to actually create a Permission of the
|
|
* specified class, when the permission is resolved.
|
|
*
|
|
* @param type the class name of the Permission class that will be
|
|
* created when this unresolved permission is resolved.
|
|
* @param name the name of the permission.
|
|
* @param actions the actions of the permission.
|
|
* @param certs the certificates the permission's class was signed with.
|
|
* This is a list of certificate chains, where each chain is composed of a
|
|
* signer certificate and optionally its supporting certificate chain.
|
|
* Each chain is ordered bottom-to-top (i.e., with the signer certificate
|
|
* first and the (root) certificate authority last). The signer
|
|
* certificates are copied from the array. Subsequent changes to
|
|
* the array will not affect this UnsolvedPermission.
|
|
*/
|
|
public UnresolvedPermission(String type,
|
|
String name,
|
|
String actions,
|
|
java.security.cert.Certificate certs[])
|
|
{
|
|
super(type);
|
|
|
|
if (type == null)
|
|
throw new NullPointerException("type can't be null");
|
|
|
|
this.type = type;
|
|
this.name = name;
|
|
this.actions = actions;
|
|
if (certs != null) {
|
|
// Extract the signer certs from the list of certificates.
|
|
for (int i=0; i<certs.length; i++) {
|
|
if (!(certs[i] instanceof X509Certificate)) {
|
|
// there is no concept of signer certs, so we store the
|
|
// entire cert array
|
|
this.certs = certs.clone();
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (this.certs == null) {
|
|
// Go through the list of certs and see if all the certs are
|
|
// signer certs.
|
|
int i = 0;
|
|
int count = 0;
|
|
while (i < certs.length) {
|
|
count++;
|
|
while (((i+1) < certs.length) &&
|
|
((X509Certificate)certs[i]).getIssuerDN().equals(
|
|
((X509Certificate)certs[i+1]).getSubjectDN())) {
|
|
i++;
|
|
}
|
|
i++;
|
|
}
|
|
if (count == certs.length) {
|
|
// All the certs are signer certs, so we store the entire
|
|
// array
|
|
this.certs = certs.clone();
|
|
}
|
|
|
|
if (this.certs == null) {
|
|
// extract the signer certs
|
|
ArrayList<java.security.cert.Certificate> signerCerts =
|
|
new ArrayList<>();
|
|
i = 0;
|
|
while (i < certs.length) {
|
|
signerCerts.add(certs[i]);
|
|
while (((i+1) < certs.length) &&
|
|
((X509Certificate)certs[i]).getIssuerDN().equals(
|
|
((X509Certificate)certs[i+1]).getSubjectDN())) {
|
|
i++;
|
|
}
|
|
i++;
|
|
}
|
|
this.certs =
|
|
new java.security.cert.Certificate[signerCerts.size()];
|
|
signerCerts.toArray(this.certs);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
private static final Class[] PARAMS0 = { };
|
|
private static final Class[] PARAMS1 = { String.class };
|
|
private static final Class[] PARAMS2 = { String.class, String.class };
|
|
|
|
/**
|
|
* try and resolve this permission using the class loader of the permission
|
|
* that was passed in.
|
|
*/
|
|
Permission resolve(Permission p, java.security.cert.Certificate certs[]) {
|
|
if (this.certs != null) {
|
|
// if p wasn't signed, we don't have a match
|
|
if (certs == null) {
|
|
return null;
|
|
}
|
|
|
|
// all certs in this.certs must be present in certs
|
|
boolean match;
|
|
for (int i = 0; i < this.certs.length; i++) {
|
|
match = false;
|
|
for (int j = 0; j < certs.length; j++) {
|
|
if (this.certs[i].equals(certs[j])) {
|
|
match = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!match) return null;
|
|
}
|
|
}
|
|
try {
|
|
Class<?> pc = p.getClass();
|
|
|
|
if (name == null && actions == null) {
|
|
try {
|
|
Constructor<?> c = pc.getConstructor(PARAMS0);
|
|
return (Permission)c.newInstance(new Object[] {});
|
|
} catch (NoSuchMethodException ne) {
|
|
try {
|
|
Constructor<?> c = pc.getConstructor(PARAMS1);
|
|
return (Permission) c.newInstance(
|
|
new Object[] { name});
|
|
} catch (NoSuchMethodException ne1) {
|
|
Constructor<?> c = pc.getConstructor(PARAMS2);
|
|
return (Permission) c.newInstance(
|
|
new Object[] { name, actions });
|
|
}
|
|
}
|
|
} else {
|
|
if (name != null && actions == null) {
|
|
try {
|
|
Constructor<?> c = pc.getConstructor(PARAMS1);
|
|
return (Permission) c.newInstance(
|
|
new Object[] { name});
|
|
} catch (NoSuchMethodException ne) {
|
|
Constructor<?> c = pc.getConstructor(PARAMS2);
|
|
return (Permission) c.newInstance(
|
|
new Object[] { name, actions });
|
|
}
|
|
} else {
|
|
Constructor<?> c = pc.getConstructor(PARAMS2);
|
|
return (Permission) c.newInstance(
|
|
new Object[] { name, actions });
|
|
}
|
|
}
|
|
} catch (NoSuchMethodException nsme) {
|
|
if (debug != null ) {
|
|
debug.println("NoSuchMethodException:\n could not find " +
|
|
"proper constructor for " + type);
|
|
nsme.printStackTrace();
|
|
}
|
|
return null;
|
|
} catch (Exception e) {
|
|
if (debug != null ) {
|
|
debug.println("unable to instantiate " + name);
|
|
e.printStackTrace();
|
|
}
|
|
return null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This method always returns false for unresolved permissions.
|
|
* That is, an UnresolvedPermission is never considered to
|
|
* imply another permission.
|
|
*
|
|
* @param p the permission to check against.
|
|
*
|
|
* @return false.
|
|
*/
|
|
public boolean implies(Permission p) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Checks two UnresolvedPermission objects for equality.
|
|
* Checks that <i>obj</i> is an UnresolvedPermission, and has
|
|
* the same type (class) name, permission name, actions, and
|
|
* certificates as this object.
|
|
*
|
|
* <p> To determine certificate equality, this method only compares
|
|
* actual signer certificates. Supporting certificate chains
|
|
* are not taken into consideration by this method.
|
|
*
|
|
* @param obj the object we are testing for equality with this object.
|
|
*
|
|
* @return true if obj is an UnresolvedPermission, and has the same
|
|
* type (class) name, permission name, actions, and
|
|
* certificates as this object.
|
|
*/
|
|
public boolean equals(Object obj) {
|
|
if (obj == this)
|
|
return true;
|
|
|
|
if (! (obj instanceof UnresolvedPermission))
|
|
return false;
|
|
UnresolvedPermission that = (UnresolvedPermission) obj;
|
|
|
|
// check type
|
|
if (!this.type.equals(that.type)) {
|
|
return false;
|
|
}
|
|
|
|
// check name
|
|
if (this.name == null) {
|
|
if (that.name != null) {
|
|
return false;
|
|
}
|
|
} else if (!this.name.equals(that.name)) {
|
|
return false;
|
|
}
|
|
|
|
// check actions
|
|
if (this.actions == null) {
|
|
if (that.actions != null) {
|
|
return false;
|
|
}
|
|
} else {
|
|
if (!this.actions.equals(that.actions)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// check certs
|
|
if ((this.certs == null && that.certs != null) ||
|
|
(this.certs != null && that.certs == null) ||
|
|
(this.certs != null && that.certs != null &&
|
|
this.certs.length != that.certs.length)) {
|
|
return false;
|
|
}
|
|
|
|
int i,j;
|
|
boolean match;
|
|
|
|
for (i = 0; this.certs != null && i < this.certs.length; i++) {
|
|
match = false;
|
|
for (j = 0; j < that.certs.length; j++) {
|
|
if (this.certs[i].equals(that.certs[j])) {
|
|
match = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!match) return false;
|
|
}
|
|
|
|
for (i = 0; that.certs != null && i < that.certs.length; i++) {
|
|
match = false;
|
|
for (j = 0; j < this.certs.length; j++) {
|
|
if (that.certs[i].equals(this.certs[j])) {
|
|
match = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!match) return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Returns the hash code value for this object.
|
|
*
|
|
* @return a hash code value for this object.
|
|
*/
|
|
|
|
public int hashCode() {
|
|
int hash = type.hashCode();
|
|
if (name != null)
|
|
hash ^= name.hashCode();
|
|
if (actions != null)
|
|
hash ^= actions.hashCode();
|
|
return hash;
|
|
}
|
|
|
|
/**
|
|
* Returns the canonical string representation of the actions,
|
|
* which currently is the empty string "", since there are no actions for
|
|
* an UnresolvedPermission. That is, the actions for the
|
|
* permission that will be created when this UnresolvedPermission
|
|
* is resolved may be non-null, but an UnresolvedPermission
|
|
* itself is never considered to have any actions.
|
|
*
|
|
* @return the empty string "".
|
|
*/
|
|
public String getActions()
|
|
{
|
|
return "";
|
|
}
|
|
|
|
/**
|
|
* Get the type (class name) of the underlying permission that
|
|
* has not been resolved.
|
|
*
|
|
* @return the type (class name) of the underlying permission that
|
|
* has not been resolved
|
|
*
|
|
* @since 1.5
|
|
*/
|
|
public String getUnresolvedType() {
|
|
return type;
|
|
}
|
|
|
|
/**
|
|
* Get the target name of the underlying permission that
|
|
* has not been resolved.
|
|
*
|
|
* @return the target name of the underlying permission that
|
|
* has not been resolved, or {@code null},
|
|
* if there is no target name
|
|
*
|
|
* @since 1.5
|
|
*/
|
|
public String getUnresolvedName() {
|
|
return name;
|
|
}
|
|
|
|
/**
|
|
* Get the actions for the underlying permission that
|
|
* has not been resolved.
|
|
*
|
|
* @return the actions for the underlying permission that
|
|
* has not been resolved, or {@code null}
|
|
* if there are no actions
|
|
*
|
|
* @since 1.5
|
|
*/
|
|
public String getUnresolvedActions() {
|
|
return actions;
|
|
}
|
|
|
|
/**
|
|
* Get the signer certificates (without any supporting chain)
|
|
* for the underlying permission that has not been resolved.
|
|
*
|
|
* @return the signer certificates for the underlying permission that
|
|
* has not been resolved, or null, if there are no signer certificates.
|
|
* Returns a new array each time this method is called.
|
|
*
|
|
* @since 1.5
|
|
*/
|
|
public java.security.cert.Certificate[] getUnresolvedCerts() {
|
|
return (certs == null) ? null : certs.clone();
|
|
}
|
|
|
|
/**
|
|
* Returns a string describing this UnresolvedPermission. The convention
|
|
* is to specify the class name, the permission name, and the actions, in
|
|
* the following format: '(unresolved "ClassName" "name" "actions")'.
|
|
*
|
|
* @return information about this UnresolvedPermission.
|
|
*/
|
|
public String toString() {
|
|
return "(unresolved " + type + " " + name + " " + actions + ")";
|
|
}
|
|
|
|
/**
|
|
* Returns a new PermissionCollection object for storing
|
|
* UnresolvedPermission objects.
|
|
* <p>
|
|
* @return a new PermissionCollection object suitable for
|
|
* storing UnresolvedPermissions.
|
|
*/
|
|
|
|
public PermissionCollection newPermissionCollection() {
|
|
return new UnresolvedPermissionCollection();
|
|
}
|
|
|
|
/**
|
|
* Writes this object out to a stream (i.e., serializes it).
|
|
*
|
|
* @serialData An initial {@code String} denoting the
|
|
* {@code type} is followed by a {@code String} denoting the
|
|
* {@code name} is followed by a {@code String} denoting the
|
|
* {@code actions} is followed by an {@code int} indicating the
|
|
* number of certificates to follow
|
|
* (a value of "zero" denotes that there are no certificates associated
|
|
* with this object).
|
|
* Each certificate is written out starting with a {@code String}
|
|
* denoting the certificate type, followed by an
|
|
* {@code int} specifying the length of the certificate encoding,
|
|
* followed by the certificate encoding itself which is written out as an
|
|
* array of bytes.
|
|
*/
|
|
private void writeObject(java.io.ObjectOutputStream oos)
|
|
throws IOException
|
|
{
|
|
oos.defaultWriteObject();
|
|
|
|
if (certs==null || certs.length==0) {
|
|
oos.writeInt(0);
|
|
} else {
|
|
// write out the total number of certs
|
|
oos.writeInt(certs.length);
|
|
// write out each cert, including its type
|
|
for (int i=0; i < certs.length; i++) {
|
|
java.security.cert.Certificate cert = certs[i];
|
|
try {
|
|
oos.writeUTF(cert.getType());
|
|
byte[] encoded = cert.getEncoded();
|
|
oos.writeInt(encoded.length);
|
|
oos.write(encoded);
|
|
} catch (CertificateEncodingException cee) {
|
|
throw new IOException(cee.getMessage());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Restores this object from a stream (i.e., deserializes it).
|
|
*/
|
|
private void readObject(java.io.ObjectInputStream ois)
|
|
throws IOException, ClassNotFoundException
|
|
{
|
|
CertificateFactory cf;
|
|
Hashtable<String, CertificateFactory> cfs = null;
|
|
List<Certificate> certList = null;
|
|
|
|
ois.defaultReadObject();
|
|
|
|
if (type == null)
|
|
throw new NullPointerException("type can't be null");
|
|
|
|
// process any new-style certs in the stream (if present)
|
|
int size = ois.readInt();
|
|
if (size > 0) {
|
|
// we know of 3 different cert types: X.509, PGP, SDSI, which
|
|
// could all be present in the stream at the same time
|
|
cfs = new Hashtable<>(3);
|
|
certList = new ArrayList<>(size > 20 ? 20 : size);
|
|
} else if (size < 0) {
|
|
throw new IOException("size cannot be negative");
|
|
}
|
|
|
|
for (int i=0; i<size; i++) {
|
|
// read the certificate type, and instantiate a certificate
|
|
// factory of that type (reuse existing factory if possible)
|
|
String certType = ois.readUTF();
|
|
if (cfs.containsKey(certType)) {
|
|
// reuse certificate factory
|
|
cf = cfs.get(certType);
|
|
} else {
|
|
// create new certificate factory
|
|
try {
|
|
cf = CertificateFactory.getInstance(certType);
|
|
} catch (CertificateException ce) {
|
|
throw new ClassNotFoundException
|
|
("Certificate factory for "+certType+" not found");
|
|
}
|
|
// store the certificate factory so we can reuse it later
|
|
cfs.put(certType, cf);
|
|
}
|
|
// parse the certificate
|
|
byte[] encoded = IOUtils.readNBytes(ois, ois.readInt());
|
|
ByteArrayInputStream bais = new ByteArrayInputStream(encoded);
|
|
try {
|
|
certList.add(cf.generateCertificate(bais));
|
|
} catch (CertificateException ce) {
|
|
throw new IOException(ce.getMessage());
|
|
}
|
|
bais.close();
|
|
}
|
|
if (certList != null) {
|
|
this.certs = certList.toArray(
|
|
new java.security.cert.Certificate[size]);
|
|
}
|
|
}
|
|
}
|