JDK8/Java8源码在线阅读
/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package sun.security.provider;
import java.io.*;
import java.lang.reflect.*;
import java.net.URL;
import java.util.*;
import java.security.AccessController;
import java.security.CodeSource;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.Permission;
import java.security.Permissions;
import java.security.PermissionCollection;
import java.security.Principal;
import java.security.PrivilegedAction;
import java.security.UnresolvedPermission;
import java.security.Security;
import java.security.cert.Certificate;
import java.security.cert.X509Certificate;
import javax.security.auth.Subject;
import javax.security.auth.PrivateCredentialPermission;
import sun.security.provider.PolicyParser.GrantEntry;
import sun.security.provider.PolicyParser.PermissionEntry;
import sun.security.provider.PolicyParser.PrincipalEntry;
import sun.security.util.Debug;
import sun.security.util.PolicyUtil;
import sun.security.util.PropertyExpander;
/**
* See {@code com.sun.security.auth.PolicyFile} for the class description.
* This class is necessary in order to support a default
* {@code javax.security.auth.Policy} implementation on the compact1 and
* compact2 profiles.
*
* @deprecated As of JDK 1.4, replaced by
* {@code sun.security.provider.PolicyFile}.
* This class is entirely deprecated.
*/
@Deprecated
public class AuthPolicyFile extends javax.security.auth.Policy {
static final ResourceBundle rb =
AccessController.doPrivileged(new PrivilegedAction<ResourceBundle>() {
@Override public ResourceBundle run() {
return (ResourceBundle.getBundle
("sun.security.util.AuthResources"));
}
});
private static final Debug debug = Debug.getInstance("policy",
"\t[Auth Policy]");
private static final String AUTH_POLICY = "java.security.auth.policy";
private static final String SECURITY_MANAGER = "java.security.manager";
private static final String AUTH_POLICY_URL = "auth.policy.url.";
private Vector<PolicyEntry> policyEntries;
private Hashtable<Object, Object> aliasMapping;
private boolean initialized = false;
private boolean expandProperties = true;
private boolean ignoreIdentityScope = true;
// for use with the reflection API
private static final Class<?>[] PARAMS = { String.class, String.class};
/**
* Initializes the Policy object and reads the default policy
* configuration file(s) into the Policy object.
*/
public AuthPolicyFile() {
// initialize Policy if either the AUTH_POLICY or
// SECURITY_MANAGER properties are set
String prop = System.getProperty(AUTH_POLICY);
if (prop == null) {
prop = System.getProperty(SECURITY_MANAGER);
}
if (prop != null) {
init();
}
}
private synchronized void init() {
if (initialized) {
return;
}
policyEntries = new Vector<PolicyEntry>();
aliasMapping = new Hashtable<Object, Object>(11);
initPolicyFile();
initialized = true;
}
@Override
public synchronized void refresh() {
java.lang.SecurityManager sm = System.getSecurityManager();
if (sm != null) {
sm.checkPermission(new javax.security.auth.AuthPermission
("refreshPolicy"));
}
// XXX
//
// 1) if code instantiates PolicyFile directly, then it will need
// all the permissions required for the PolicyFile initialization
// 2) if code calls Policy.getPolicy, then it simply needs
// AuthPermission(getPolicy), and the javax.security.auth.Policy
// implementation instantiates PolicyFile in a doPrivileged block
// 3) if after instantiating a Policy (either via #1 or #2),
// code calls refresh, it simply needs
// AuthPermission(refreshPolicy). then PolicyFile wraps
// the refresh in a doPrivileged block.
initialized = false;
AccessController.doPrivileged(new PrivilegedAction<Void>() {
@Override public Void run() {
init();
return null;
}
});
}
private KeyStore initKeyStore(URL policyUrl, String keyStoreName,
String keyStoreType) {
if (keyStoreName != null) {
try {
/*
* location of keystore is specified as absolute URL in policy
* file, or is relative to URL of policy file
*/
URL keyStoreUrl = null;
try {
keyStoreUrl = new URL(keyStoreName);
// absolute URL
} catch (java.net.MalformedURLException e) {
// relative URL
keyStoreUrl = new URL(policyUrl, keyStoreName);
}
if (debug != null) {
debug.println("reading keystore"+keyStoreUrl);
}
InputStream inStream = new BufferedInputStream(
PolicyUtil.getInputStream(keyStoreUrl));
KeyStore ks;
if (keyStoreType != null)
ks = KeyStore.getInstance(keyStoreType);
else
ks = KeyStore.getInstance(KeyStore.getDefaultType());
ks.load(inStream, null);
inStream.close();
return ks;
} catch (Exception e) {
// ignore, treat it like we have no keystore
if (debug != null) {
e.printStackTrace();
}
return null;
}
}
return null;
}
private void initPolicyFile() {
String prop = Security.getProperty("policy.expandProperties");
if (prop != null) {
expandProperties = prop.equalsIgnoreCase("true");
}
String iscp = Security.getProperty("policy.ignoreIdentityScope");
if (iscp != null) {
ignoreIdentityScope = iscp.equalsIgnoreCase("true");
}
String allowSys = Security.getProperty("policy.allowSystemProperty");
if (allowSys != null && allowSys.equalsIgnoreCase("true")) {
String extra_policy = System.getProperty(AUTH_POLICY);
if (extra_policy != null) {
boolean overrideAll = false;
if (extra_policy.startsWith("=")) {
overrideAll = true;
extra_policy = extra_policy.substring(1);
}
try {
extra_policy = PropertyExpander.expand(extra_policy);
URL policyURL;
File policyFile = new File(extra_policy);
if (policyFile.exists()) {
policyURL =
new URL("file:" + policyFile.getCanonicalPath());
} else {
policyURL = new URL(extra_policy);
}
if (debug != null) {
debug.println("reading " + policyURL);
}
init(policyURL);
} catch (Exception e) {
// ignore.
if (debug != null) {
debug.println("caught exception: " + e);
}
}
if (overrideAll) {
if (debug != null) {
debug.println("overriding other policies!");
}
return;
}
}
}
int n = 1;
boolean loaded_one = false;
String policy_url;
while ((policy_url = Security.getProperty(AUTH_POLICY_URL+n)) != null) {
try {
policy_url = PropertyExpander.expand(policy_url).replace
(File.separatorChar, '/');
if (debug != null) {
debug.println("reading " + policy_url);
}
init(new URL(policy_url));
loaded_one = true;
} catch (Exception e) {
if (debug != null) {
debug.println("error reading policy " + e);
e.printStackTrace();
}
// ignore that policy
}
n++;
}
if (loaded_one == false) {
// do not load a static policy
}
}
/**
* Checks public key. If it is marked as trusted in
* the identity database, add it to the policy
* with the AllPermission.
*/
private boolean checkForTrustedIdentity(final Certificate cert) {
return false;
}
/**
* Reads a policy configuration into the Policy object using a
* Reader object.
*
* @param policyFile the policy Reader object.
*/
private void init(URL policy) {
PolicyParser pp = new PolicyParser(expandProperties);
try (InputStreamReader isr
= new InputStreamReader(PolicyUtil.getInputStream(policy))) {
pp.read(isr);
KeyStore keyStore = initKeyStore(policy, pp.getKeyStoreUrl(),
pp.getKeyStoreType());
Enumeration<GrantEntry> enum_ = pp.grantElements();
while (enum_.hasMoreElements()) {
GrantEntry ge = enum_.nextElement();
addGrantEntry(ge, keyStore);
}
} catch (PolicyParser.ParsingException pe) {
System.err.println(AUTH_POLICY +
rb.getString(".error.parsing.") + policy);
System.err.println(AUTH_POLICY + rb.getString("COLON") +
pe.getMessage());
if (debug != null) {
pe.printStackTrace();
}
} catch (Exception e) {
if (debug != null) {
debug.println("error parsing " + policy);
debug.println(e.toString());
e.printStackTrace();
}
}
}
/**
* Given a PermissionEntry, create a codeSource.
*
* @return null if signedBy alias is not recognized
*/
CodeSource getCodeSource(GrantEntry ge, KeyStore keyStore)
throws java.net.MalformedURLException
{
Certificate[] certs = null;
if (ge.signedBy != null) {
certs = getCertificates(keyStore, ge.signedBy);
if (certs == null) {
// we don't have a key for this alias,
// just return
if (debug != null) {
debug.println(" no certs for alias " +
ge.signedBy + ", ignoring.");
}
return null;
}
}
URL location;
if (ge.codeBase != null) {
location = new URL(ge.codeBase);
} else {
location = null;
}
if (ge.principals == null || ge.principals.size() == 0) {
return (canonicalizeCodebase
(new CodeSource(location, certs),
false));
} else {
return (canonicalizeCodebase
(new SubjectCodeSource(null, ge.principals, location, certs),
false));
}
}
/**
* Add one policy entry to the vector.
*/
private void addGrantEntry(GrantEntry ge, KeyStore keyStore) {
if (debug != null) {
debug.println("Adding policy entry: ");
debug.println(" signedBy " + ge.signedBy);
debug.println(" codeBase " + ge.codeBase);
if (ge.principals != null) {
for (PrincipalEntry pppe : ge.principals) {
debug.println(" " + pppe.getPrincipalClass() +
" " + pppe.getPrincipalName());
}
}
debug.println();
}
try {
CodeSource codesource = getCodeSource(ge, keyStore);
// skip if signedBy alias was unknown...
if (codesource == null) return;
PolicyEntry entry = new PolicyEntry(codesource);
Enumeration<PermissionEntry> enum_ = ge.permissionElements();
while (enum_.hasMoreElements()) {
PermissionEntry pe = enum_.nextElement();
try {
// XXX special case PrivateCredentialPermission-SELF
Permission perm;
if (pe.permission.equals
("javax.security.auth.PrivateCredentialPermission") &&
pe.name.endsWith(" self")) {
perm = getInstance(pe.permission,
pe.name + " \"self\"",
pe.action);
} else {
perm = getInstance(pe.permission,
pe.name,
pe.action);
}
entry.add(perm);
if (debug != null) {
debug.println(" "+perm);
}
} catch (ClassNotFoundException cnfe) {
Certificate certs[];
if (pe.signedBy != null) {
certs = getCertificates(keyStore, pe.signedBy);
} else {
certs = null;
}
// only add if we had no signer or we had a
// a signer and found the keys for it.
if (certs != null || pe.signedBy == null) {
Permission perm = new UnresolvedPermission(
pe.permission,
pe.name,
pe.action,
certs);
entry.add(perm);
if (debug != null) {
debug.println(" "+perm);
}
}
} catch (java.lang.reflect.InvocationTargetException ite) {
System.err.println
(AUTH_POLICY +
rb.getString(".error.adding.Permission.") +
pe.permission +
rb.getString("SPACE") +
ite.getTargetException());
} catch (Exception e) {
System.err.println
(AUTH_POLICY +
rb.getString(".error.adding.Permission.") +
pe.permission +
rb.getString("SPACE") +
e);
}
}
policyEntries.addElement(entry);
} catch (Exception e) {
System.err.println
(AUTH_POLICY +
rb.getString(".error.adding.Entry.") +
ge +
rb.getString("SPACE") +
e);
}
if (debug != null) {
debug.println();
}
}
/**
* Returns a new Permission object of the given Type. The Permission is
* created by getting the
* Class object using the <code>Class.forName</code> method, and using
* the reflection API to invoke the (String name, String actions)
* constructor on the
* object.
*
* @param type the type of Permission being created.
* @param name the name of the Permission being created.
* @param actions the actions of the Permission being created.
*
* @exception ClassNotFoundException if the particular Permission
* class could not be found.
*
* @exception IllegalAccessException if the class or initializer is
* not accessible.
*
* @exception InstantiationException if getInstance tries to
* instantiate an abstract class or an interface, or if the
* instantiation fails for some other reason.
*
* @exception NoSuchMethodException if the (String, String) constructor
* is not found.
*
* @exception InvocationTargetException if the underlying Permission
* constructor throws an exception.
*
*/
private static final Permission getInstance(String type,
String name,
String actions)
throws ClassNotFoundException,
InstantiationException,
IllegalAccessException,
NoSuchMethodException,
InvocationTargetException
{
//XXX we might want to keep a hash of created factories...
Class<?> pc = Class.forName(type);
Constructor<?> c = pc.getConstructor(PARAMS);
return (Permission) c.newInstance(new Object[] { name, actions });
}
/**
* Fetch all certs associated with this alias.
*/
Certificate[] getCertificates(KeyStore keyStore, String aliases) {
Vector<Certificate> vcerts = null;
StringTokenizer st = new StringTokenizer(aliases, ",");
int n = 0;
while (st.hasMoreTokens()) {
String alias = st.nextToken().trim();
n++;
Certificate cert = null;
// See if this alias's cert has already been cached
cert = (Certificate) aliasMapping.get(alias);
if (cert == null && keyStore != null) {
try {
cert = keyStore.getCertificate(alias);
} catch (KeyStoreException kse) {
// never happens, because keystore has already been loaded
// when we call this
}
if (cert != null) {
aliasMapping.put(alias, cert);
aliasMapping.put(cert, alias);
}
}
if (cert != null) {
if (vcerts == null) {
vcerts = new Vector<Certificate>();
}
vcerts.addElement(cert);
}
}
// make sure n == vcerts.size, since we are doing a logical *and*
if (vcerts != null && n == vcerts.size()) {
Certificate[] certs = new Certificate[vcerts.size()];
vcerts.copyInto(certs);
return certs;
} else {
return null;
}
}
/**
* Enumerate all the entries in the global policy object.
* This method is used by policy admin tools. The tools
* should use the Enumeration methods on the returned object
* to fetch the elements sequentially.
*/
private final synchronized Enumeration<PolicyEntry> elements() {
return policyEntries.elements();
}
@Override
public PermissionCollection getPermissions(final Subject subject,
final CodeSource codesource) {
// 1) if code instantiates PolicyFile directly, then it will need
// all the permissions required for the PolicyFile initialization
// 2) if code calls Policy.getPolicy, then it simply needs
// AuthPermission(getPolicy), and the javax.security.auth.Policy
// implementation instantiates PolicyFile in a doPrivileged block
// 3) if after instantiating a Policy (either via #1 or #2),
// code calls getPermissions, PolicyFile wraps the call
// in a doPrivileged block.
return AccessController.doPrivileged
(new PrivilegedAction<PermissionCollection>() {
@Override public PermissionCollection run() {
SubjectCodeSource scs = new SubjectCodeSource(
subject, null,
codesource == null ? null : codesource.getLocation(),
codesource == null ? null : codesource.getCertificates());
if (initialized) {
return getPermissions(new Permissions(), scs);
} else {
return new PolicyPermissions(AuthPolicyFile.this, scs);
}
}
});
}
/**
* Examines the global policy for the specified CodeSource, and
* creates a PermissionCollection object with
* the set of permissions for that principal's protection domain.
*
* @param CodeSource the codesource associated with the caller.
* This encapsulates the original location of the code (where the code
* came from) and the public key(s) of its signer.
*
* @return the set of permissions according to the policy.
*/
PermissionCollection getPermissions(CodeSource codesource) {
if (initialized) {
return getPermissions(new Permissions(), codesource);
} else {
return new PolicyPermissions(this, codesource);
}
}
/**
* Examines the global policy for the specified CodeSource, and
* creates a PermissionCollection object with
* the set of permissions for that principal's protection domain.
*
* @param permissions the permissions to populate
* @param codesource the codesource associated with the caller.
* This encapsulates the original location of the code (where the code
* came from) and the public key(s) of its signer.
*
* @return the set of permissions according to the policy.
*/
Permissions getPermissions(final Permissions perms,
final CodeSource cs)
{
if (!initialized) {
init();
}
final CodeSource codesource[] = {null};
codesource[0] = canonicalizeCodebase(cs, true);
if (debug != null) {
debug.println("evaluate(" + codesource[0] + ")\n");
}
// needs to be in a begin/endPrivileged block because
// codesource.implies calls URL.equals which does an
// InetAddress lookup
for (int i = 0; i < policyEntries.size(); i++) {
PolicyEntry entry = policyEntries.elementAt(i);
if (debug != null) {
debug.println("PolicyFile CodeSource implies: " +
entry.codesource.toString() + "\n\n" +
"\t" + codesource[0].toString() + "\n\n");
}
if (entry.codesource.implies(codesource[0])) {
for (int j = 0; j < entry.permissions.size(); j++) {
Permission p = entry.permissions.elementAt(j);
if (debug != null) {
debug.println(" granting " + p);
}
if (!addSelfPermissions(p, entry.codesource,
codesource[0], perms)) {
// we could check for duplicates
// before adding new permissions,
// but the SubjectDomainCombiner
// already checks for duplicates later
perms.add(p);
}
}
}
}
// now see if any of the keys are trusted ids.
if (!ignoreIdentityScope) {
Certificate certs[] = codesource[0].getCertificates();
if (certs != null) {
for (int k=0; k < certs.length; k++) {
if (aliasMapping.get(certs[k]) == null &&
checkForTrustedIdentity(certs[k])) {
// checkForTrustedIdentity added it
// to the policy for us. next time
// around we'll find it. This time
// around we need to add it.
perms.add(new java.security.AllPermission());
}
}
}
}
return perms;
}
/**
* Returns true if 'Self' permissions were added to the provided
* 'perms', and false otherwise.
*
* <p>
*
* @param p check to see if this Permission is a "SELF"
* PrivateCredentialPermission. <p>
*
* @param entryCs the codesource for the Policy entry.
*
* @param accCs the codesource for from the current AccessControlContext.
*
* @param perms the PermissionCollection where the individual
* PrivateCredentialPermissions will be added.
*/
private boolean addSelfPermissions(final Permission p,
CodeSource entryCs,
CodeSource accCs,
Permissions perms) {
if (!(p instanceof PrivateCredentialPermission)) {
return false;
}
if (!(entryCs instanceof SubjectCodeSource)) {
return false;
}
PrivateCredentialPermission pcp = (PrivateCredentialPermission)p;
SubjectCodeSource scs = (SubjectCodeSource)entryCs;
// see if it is a SELF permission
String[][] pPrincipals = pcp.getPrincipals();
if (pPrincipals.length <= 0 ||
!pPrincipals[0][0].equalsIgnoreCase("self") ||
!pPrincipals[0][1].equalsIgnoreCase("self")) {
// regular PrivateCredentialPermission
return false;
} else {
// granted a SELF permission - create a
// PrivateCredentialPermission for each
// of the Policy entry's CodeSource Principals
if (scs.getPrincipals() == null) {
// XXX SubjectCodeSource has no Subject???
return true;
}
for (PrincipalEntry principal : scs.getPrincipals()) {
// if the Policy entry's Principal does not contain a
// WILDCARD for the Principal name, then a
// new PrivateCredentialPermission is created
// for the Principal listed in the Policy entry.
// if the Policy entry's Principal contains a WILDCARD
// for the Principal name, then a new
// PrivateCredentialPermission is created
// for each Principal associated with the Subject
// in the current ACC.
String[][] principalInfo = getPrincipalInfo(principal, accCs);
for (int i = 0; i < principalInfo.length; i++) {
// here's the new PrivateCredentialPermission
PrivateCredentialPermission newPcp =
new PrivateCredentialPermission
(pcp.getCredentialClass() +
" " +
principalInfo[i][0] +
" " +
"\"" + principalInfo[i][1] + "\"",
"read");
if (debug != null) {
debug.println("adding SELF permission: " +
newPcp.toString());
}
perms.add(newPcp);
}
}
}
return true;
}
/**
* return the principal class/name pair in the 2D array.
* array[x][y]: x corresponds to the array length.
* if (y == 0), it's the principal class.
* if (y == 1), it's the principal name.
*/
private String[][] getPrincipalInfo(PrincipalEntry principal,
final CodeSource accCs) {
// there are 3 possibilities:
// 1) the entry's Principal class and name are not wildcarded
// 2) the entry's Principal name is wildcarded only
// 3) the entry's Principal class and name are wildcarded
if (!principal.getPrincipalClass().equals
(PrincipalEntry.WILDCARD_CLASS) &&
!principal.getPrincipalName().equals
(PrincipalEntry.WILDCARD_NAME)) {
// build a PrivateCredentialPermission for the principal
// from the Policy entry
String[][] info = new String[1][2];
info[0][0] = principal.getPrincipalClass();
info[0][1] = principal.getPrincipalName();
return info;
} else if (!principal.getPrincipalClass().equals
(PrincipalEntry.WILDCARD_CLASS) &&
principal.getPrincipalName().equals
(PrincipalEntry.WILDCARD_NAME)) {
// build a PrivateCredentialPermission for all
// the Subject's principals that are instances of principalClass
// the accCs is guaranteed to be a SubjectCodeSource
// because the earlier CodeSource.implies succeeded
SubjectCodeSource scs = (SubjectCodeSource)accCs;
Set<? extends Principal> principalSet = null;
try {
// principal.principalClass should extend Principal
// If it doesn't, we should stop here with a ClassCastException.
@SuppressWarnings("unchecked")
Class<? extends Principal> pClass = (Class<? extends Principal>)
Class.forName(principal.getPrincipalClass(), false,
ClassLoader.getSystemClassLoader());
principalSet = scs.getSubject().getPrincipals(pClass);
} catch (Exception e) {
if (debug != null) {
debug.println("problem finding Principal Class " +
"when expanding SELF permission: " +
e.toString());
}
}
if (principalSet == null) {
// error
return new String[0][0];
}
String[][] info = new String[principalSet.size()][2];
int i = 0;
for (Principal p : principalSet) {
info[i][0] = p.getClass().getName();
info[i][1] = p.getName();
i++;
}
return info;
} else {
// build a PrivateCredentialPermission for every
// one of the current Subject's principals
// the accCs is guaranteed to be a SubjectCodeSource
// because the earlier CodeSource.implies succeeded
SubjectCodeSource scs = (SubjectCodeSource)accCs;
Set<Principal> principalSet = scs.getSubject().getPrincipals();
String[][] info = new String[principalSet.size()][2];
int i = 0;
for (Principal p : principalSet) {
info[i][0] = p.getClass().getName();
info[i][1] = p.getName();
i++;
}
return info;
}
}
/*
* Returns the signer certificates from the list of certificates associated
* with the given code source.
*
* The signer certificates are those certificates that were used to verify
* signed code originating from the codesource location.
*
* This method assumes that in the given code source, each signer
* certificate is followed by its supporting certificate chain
* (which may be empty), and that the signer certificate and its
* supporting certificate chain are ordered bottom-to-top (i.e., with the
* signer certificate first and the (root) certificate authority last).
*/
Certificate[] getSignerCertificates(CodeSource cs) {
Certificate[] certs = null;
if ((certs = cs.getCertificates()) == null) {
return null;
}
for (int i = 0; i < certs.length; i++) {
if (!(certs[i] instanceof X509Certificate))
return cs.getCertificates();
}
// Do we have to do anything?
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) {
// Done
return certs;
}
ArrayList<Certificate> userCertList = new ArrayList<>();
i = 0;
while (i < certs.length) {
userCertList.add(certs[i]);
while (((i+1) < certs.length)
&& ((X509Certificate)certs[i]).getIssuerDN().equals(
((X509Certificate)certs[i+1]).getSubjectDN())) {
i++;
}
i++;
}
Certificate[] userCerts = new Certificate[userCertList.size()];
userCertList.toArray(userCerts);
return userCerts;
}
private CodeSource canonicalizeCodebase(CodeSource cs,
boolean extractSignerCerts) {
CodeSource canonCs = cs;
if (cs.getLocation() != null &&
cs.getLocation().getProtocol().equalsIgnoreCase("file")) {
try {
String path = cs.getLocation().getFile().replace
('/',
File.separatorChar);
URL csUrl = null;
if (path.endsWith("*")) {
// remove trailing '*' because it causes canonicalization
// to fail on win32
path = path.substring(0, path.length()-1);
boolean appendFileSep = false;
if (path.endsWith(File.separator)) {
appendFileSep = true;
}
if (path.equals("")) {
path = System.getProperty("user.dir");
}
File f = new File(path);
path = f.getCanonicalPath();
StringBuffer sb = new StringBuffer(path);
// reappend '*' to canonicalized filename (note that
// canonicalization may have removed trailing file
// separator, so we have to check for that, too)
if (!path.endsWith(File.separator) &&
(appendFileSep || f.isDirectory())) {
sb.append(File.separatorChar);
}
sb.append('*');
path = sb.toString();
} else {
path = new File(path).getCanonicalPath();
}
csUrl = new File(path).toURL();
if (cs instanceof SubjectCodeSource) {
SubjectCodeSource scs = (SubjectCodeSource)cs;
if (extractSignerCerts) {
canonCs = new SubjectCodeSource(scs.getSubject(),
scs.getPrincipals(),
csUrl,
getSignerCertificates(scs));
} else {
canonCs = new SubjectCodeSource(scs.getSubject(),
scs.getPrincipals(),
csUrl,
scs.getCertificates());
}
} else {
if (extractSignerCerts) {
canonCs = new CodeSource(csUrl,
getSignerCertificates(cs));
} else {
canonCs = new CodeSource(csUrl,
cs.getCertificates());
}
}
} catch (IOException ioe) {
// leave codesource as it is, unless we have to extract its
// signer certificates
if (extractSignerCerts) {
if (!(cs instanceof SubjectCodeSource)) {
canonCs = new CodeSource(cs.getLocation(),
getSignerCertificates(cs));
} else {
SubjectCodeSource scs = (SubjectCodeSource)cs;
canonCs = new SubjectCodeSource(scs.getSubject(),
scs.getPrincipals(),
scs.getLocation(),
getSignerCertificates(scs));
}
}
}
} else {
if (extractSignerCerts) {
if (!(cs instanceof SubjectCodeSource)) {
canonCs = new CodeSource(cs.getLocation(),
getSignerCertificates(cs));
} else {
SubjectCodeSource scs = (SubjectCodeSource)cs;
canonCs = new SubjectCodeSource(scs.getSubject(),
scs.getPrincipals(),
scs.getLocation(),
getSignerCertificates(scs));
}
}
}
return canonCs;
}
/**
* Each entry in the policy configuration file is represented by a
* PolicyEntry object. <p>
*
* A PolicyEntry is a (CodeSource,Permission) pair. The
* CodeSource contains the (URL, PublicKey) that together identify
* where the Java bytecodes come from and who (if anyone) signed
* them. The URL could refer to localhost. The URL could also be
* null, meaning that this policy entry is given to all comers, as
* long as they match the signer field. The signer could be null,
* meaning the code is not signed. <p>
*
* The Permission contains the (Type, Name, Action) triplet. <p>
*
* For now, the Policy object retrieves the public key from the
* X.509 certificate on disk that corresponds to the signedBy
* alias specified in the Policy config file. For reasons of
* efficiency, the Policy object keeps a hashtable of certs already
* read in. This could be replaced by a secure internal key
* store.
*
* <p>
* For example, the entry
* <pre>
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