/*
* Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
* 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.MalformedURLException;
import java.net.URL;
import java.net.URI;
import java.nio.file.Paths;
import java.util.*;
import java.security.*;
import java.security.cert.Certificate;
import java.security.cert.X509Certificate;
import javax.security.auth.Subject;
import javax.security.auth.x500.X500Principal;
import java.io.FilePermission;
import java.net.SocketPermission;
import java.net.NetPermission;
import java.util.concurrent.atomic.AtomicReference;
import jdk.internal.misc.JavaSecurityProtectionDomainAccess;
import static jdk.internal.misc.JavaSecurityProtectionDomainAccess.ProtectionDomainCache;
import jdk.internal.misc.SharedSecrets;
import sun.security.util.*;
import sun.net.www.ParseUtil;
/**
* This class represents a default Policy implementation for the
* "JavaPolicy" type.
*
* <p> This object stores the policy for the entire Java runtime,
* and is the amalgamation of multiple static policy
* configurations that resides in files.
* The algorithm for locating the policy file(s) and reading their
* information into this <code>Policy</code> object is:
*
* <ol>
* <li>
* Read in and load the default policy file named
* <JAVA_HOME>/lib/security/default.policy. <JAVA_HOME> refers
* to the value of the java.home system property, and specifies the directory
* where the JRE is installed. This policy file grants permissions to the
* modules loaded by the platform class loader. If the default policy file
* cannot be loaded, a fatal InternalError is thrown as these permissions
* are needed in order for the runtime to operate correctly.
* <li>
* Loop through the <code>java.security.Security</code> properties,
* and <i>policy.url.1</i>, <i>policy.url.2</i>, ...,
* <i>policy.url.X</i>". These properties are set
* in the Java security properties file, which is located in the file named
* <JAVA_HOME>/conf/security/java.security.
* Each property value specifies a <code>URL</code> pointing to a
* policy file to be loaded. Read in and load each policy.
*
* If none of these could be loaded, use a builtin static policy
* equivalent to the conf/security/java.policy file.
*
* <li>
* The <code>java.lang.System</code> property <i>java.security.policy</i>
* may also be set to a <code>URL</code> pointing to another policy file
* (which is the case when a user uses the -D switch at runtime).
* If this property is defined, and its use is allowed by the
* security property file (the Security property,
* <i>policy.allowSystemProperty</i> is set to <i>true</i>),
* also load that policy.
*
* If the <i>java.security.policy</i> property is defined using
* "==" (rather than "="), then load the specified policy file and ignore
* all other configured policies. Note, that the default.policy file is
* also loaded, as specified in the first step of the algorithm above.
* If the specified policy file cannot be loaded, use a builtin static policy
* equivalent to the default conf/security/java.policy file.
* </ol>
*
* Each policy file consists of one or more grant entries, each of
* which consists of a number of permission entries.
*
* <pre>
* grant signedBy "<b>alias</b>", codeBase "<b>URL</b>",
* principal <b>principalClass</b> "<b>principalName</b>",
* principal <b>principalClass</b> "<b>principalName</b>",
* ... {
*
* permission <b>Type</b> "<b>name</b> "<b>action</b>",
* signedBy "<b>alias</b>";
* permission <b>Type</b> "<b>name</b> "<b>action</b>",
* signedBy "<b>alias</b>";
* ....
* };
* </pre>
*
* All non-bold items above must appear as is (although case
* doesn't matter and some are optional, as noted below).
* principal entries are optional and need not be present.
* Italicized items represent variable values.
*
* <p> A grant entry must begin with the word <code>grant</code>.
* The <code>signedBy</code>,<code>codeBase</code> and <code>principal</code>
* name/value pairs are optional.
* If they are not present, then any signer (including unsigned code)
* will match, and any codeBase will match.
* Note that the <i>principalClass</i>
* may be set to the wildcard value, *, which allows it to match
* any <code>Principal</code> class. In addition, the <i>principalName</i>
* may also be set to the wildcard value, *, allowing it to match
* any <code>Principal</code> name. When setting the <i>principalName</i>
* to the *, do not surround the * with quotes.
*
* <p> A permission entry must begin with the word <code>permission</code>.
* The word <code><i>Type</i></code> in the template above is
* a specific permission type, such as <code>java.io.FilePermission</code>
* or <code>java.lang.RuntimePermission</code>.
*
* <p> The "<i>action</i>" is required for
* many permission types, such as <code>java.io.FilePermission</code>
* (where it specifies what type of file access that is permitted).
* It is not required for categories such as
* <code>java.lang.RuntimePermission</code>
* where it is not necessary - you either have the
* permission specified by the <code>"<i>name</i>"</code>
* value following the type name or you don't.
*
* <p> The <code>signedBy</code> name/value pair for a permission entry
* is optional. If present, it indicates a signed permission. That is,
* the permission class itself must be signed by the given alias in
* order for it to be granted. For example,
* suppose you have the following grant entry:
*
* <pre>
* grant principal foo.com.Principal "Duke" {
* permission Foo "foobar", signedBy "FooSoft";
* }
* </pre>
*
* <p> Then this permission of type <i>Foo</i> is granted if the
* <code>Foo.class</code> permission has been signed by the
* "FooSoft" alias, or if XXX <code>Foo.class</code> is a
* system class (i.e., is found on the CLASSPATH).
*
* <p> Items that appear in an entry must appear in the specified order
* (<code>permission</code>, <i>Type</i>, "<i>name</i>", and
* "<i>action</i>"). An entry is terminated with a semicolon.
*
* <p> Case is unimportant for the identifiers (<code>permission</code>,
* <code>signedBy</code>, <code>codeBase</code>, etc.) but is
* significant for the <i>Type</i>
* or for any string that is passed in as a value.
*
* <p> An example of two entries in a policy configuration file is
* <pre>
* // if the code is comes from "foo.com" and is running as "Duke",
* // grant it read/write to all files in /tmp.
*
* grant codeBase "foo.com", principal foo.com.Principal "Duke" {
* permission java.io.FilePermission "/tmp/*", "read,write";
* };
*
* // grant any code running as "Duke" permission to read
* // the "java.vendor" Property.
*
* grant principal foo.com.Principal "Duke" {
* permission java.util.PropertyPermission "java.vendor";
*
*
* </pre>
* This Policy implementation supports special handling of any
* permission that contains the string, "<b>${{self}}</b>", as part of
* its target name. When such a permission is evaluated
* (such as during a security check), <b>${{self}}</b> is replaced
* with one or more Principal class/name pairs. The exact
* replacement performed depends upon the contents of the
* grant clause to which the permission belongs.
* <p>
*
* If the grant clause does not contain any principal information,
* the permission will be ignored (permissions containing
* <b>${{self}}</b> in their target names are only valid in the context
* of a principal-based grant clause). For example, BarPermission
* will always be ignored in the following grant clause:
*
* <pre>
* grant codebase "www.foo.com", signedby "duke" {
* permission BarPermission "... ${{self}} ...";
* };
* </pre>
*
* If the grant clause contains principal information, <b>${{self}}</b>
* will be replaced with that same principal information.
* For example, <b>${{self}}</b> in BarPermission will be replaced by
* <b>javax.security.auth.x500.X500Principal "cn=Duke"</b>
* in the following grant clause:
*
* <pre>
* grant principal javax.security.auth.x500.X500Principal "cn=Duke" {
* permission BarPermission "... ${{self}} ...";
* };
* </pre>
*
* If there is a comma-separated list of principals in the grant
* clause, then <b>${{self}}</b> will be replaced by the same
* comma-separated list or principals.
* In the case where both the principal class and name are
* wildcarded in the grant clause, <b>${{self}}</b> is replaced
* with all the principals associated with the <code>Subject</code>
* in the current <code>AccessControlContext</code>.
*
* <p> For PrivateCredentialPermissions, you can also use "<b>self</b>"
* instead of "<b>${{self}}</b>". However the use of "<b>self</b>" is
* deprecated in favour of "<b>${{self}}</b>".
*
* @see java.security.CodeSource
* @see java.security.Permissions
* @see java.security.ProtectionDomain
*/
public class PolicyFile extends java.security.Policy {
private static final Debug debug = Debug.getInstance("policy");
private static final String SELF = "${{self}}";
private static final String X500PRINCIPAL =
"javax.security.auth.x500.X500Principal";
private static final String POLICY = "java.security.policy";
private static final String POLICY_URL = "policy.url.";
private static final int DEFAULT_CACHE_SIZE = 1;
// contains the policy grant entries, PD cache, and alias mapping
private AtomicReference<PolicyInfo> policyInfo = new AtomicReference<>();
private boolean expandProperties = true;
private boolean allowSystemProperties = true;
private boolean notUtf8 = false;
private URL url;
// for use with the reflection API
private static final Class<?>[] PARAMS0 = { };
private static final Class<?>[] PARAMS1 = { String.class };
private static final Class<?>[] PARAMS2 = { String.class, String.class };
/**
* When a policy file has a syntax error, the exception code may generate
* another permission check and this can cause the policy file to be parsed
* repeatedly, leading to a StackOverflowError or ClassCircularityError.
* To avoid this, this set is populated with policy files that have been
* previously parsed and have syntax errors, so that they can be
* subsequently ignored.
*/
private static AtomicReference<Set<URL>> badPolicyURLs =
new AtomicReference<>(new HashSet<>());
// The default.policy file
private static final URL DEFAULT_POLICY_URL =
AccessController.doPrivileged(new PrivilegedAction<>() {
@Override
public URL run() {
String sep = File.separator;
try {
return Paths.get(System.getProperty("java.home"),
"lib", "security",
"default.policy").toUri().toURL();
} catch (MalformedURLException mue) {
// should not happen
throw new Error("Malformed default.policy URL: " + mue);
}
}
});
/**
* Initializes the Policy object and reads the default policy
* configuration file(s) into the Policy object.
*/
public PolicyFile() {
init((URL)null);
}
/**
* Initializes the Policy object and reads the default policy
* from the specified URL only.
*/
public PolicyFile(URL url) {
this.url = url;
init(url);
}
/**
* Initializes the Policy object and reads the default policy
* configuration file(s) into the Policy object.
*
* See the class description for details on the algorithm used to
* initialize the Policy object.
*/
private void init(URL url) {
// Properties are set once for each init(); ignore changes between
// between diff invocations of initPolicyFile(policy, url, info).
String numCacheStr =
AccessController.doPrivileged(new PrivilegedAction<>() {
@Override
public String run() {
expandProperties = "true".equalsIgnoreCase
(Security.getProperty("policy.expandProperties"));
allowSystemProperties = "true".equalsIgnoreCase
(Security.getProperty("policy.allowSystemProperty"));
notUtf8 = "false".equalsIgnoreCase
(System.getProperty("sun.security.policy.utf8"));
return System.getProperty("sun.security.policy.numcaches");
}});
int numCaches;
if (numCacheStr != null) {
try {
numCaches = Integer.parseInt(numCacheStr);
} catch (NumberFormatException e) {
numCaches = DEFAULT_CACHE_SIZE;
}
} else {
numCaches = DEFAULT_CACHE_SIZE;
}
// System.out.println("number caches=" + numCaches);
PolicyInfo newInfo = new PolicyInfo(numCaches);
initPolicyFile(newInfo, url);
policyInfo.set(newInfo);
}
private void initPolicyFile(final PolicyInfo newInfo, final URL url) {
// always load default.policy
if (debug != null) {
debug.println("reading " + DEFAULT_POLICY_URL);
}
AccessController.doPrivileged(new PrivilegedAction<>() {
@Override
public Void run() {
init(DEFAULT_POLICY_URL, newInfo, true);
return null;
}
});
if (url != null) {
/**
* If the caller specified a URL via Policy.getInstance,
* we only read from default.policy and that URL.
*/
if (debug != null) {
debug.println("reading " + url);
}
AccessController.doPrivileged(new PrivilegedAction<>() {
@Override
public Void run() {
if (init(url, newInfo, false) == false) {
// use static policy if all else fails
initStaticPolicy(newInfo);
}
return null;
}
});
} else {
/**
* Caller did not specify URL via Policy.getInstance.
* Read from URLs listed in the java.security properties file.
*/
boolean loaded_one = initPolicyFile(POLICY, POLICY_URL, newInfo);
// To maintain strict backward compatibility
// we load the static policy only if POLICY load failed
if (!loaded_one) {
// use static policy if all else fails
initStaticPolicy(newInfo);
}
}
}
private boolean initPolicyFile(final String propname, final String urlname,
final PolicyInfo newInfo) {
boolean loadedPolicy =
AccessController.doPrivileged(new PrivilegedAction<>() {
@Override
public Boolean run() {
boolean loaded_policy = false;
if (allowSystemProperties) {
String extra_policy = System.getProperty(propname);
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 = ParseUtil.fileToEncodedURL
(new File(policyFile.getCanonicalPath()));
} else {
policyURL = new URL(extra_policy);
}
if (debug != null) {
debug.println("reading "+policyURL);
}
if (init(policyURL, newInfo, false)) {
loaded_policy = true;
}
} catch (Exception e) {
// ignore.
if (debug != null) {
debug.println("caught exception: "+e);
}
}
if (overrideAll) {
if (debug != null) {
debug.println("overriding other policies!");
}
return Boolean.valueOf(loaded_policy);
}
}
}
int n = 1;
String policy_uri;
while ((policy_uri = Security.getProperty(urlname+n)) != null) {
try {
URL policy_url = null;
String expanded_uri = PropertyExpander.expand
(policy_uri).replace(File.separatorChar, '/');
if (policy_uri.startsWith("file:${java.home}/") ||
policy_uri.startsWith("file:${user.home}/")) {
// this special case accommodates
// the situation java.home/user.home
// expand to a single slash, resulting in
// a file://foo URI
policy_url = new File
(expanded_uri.substring(5)).toURI().toURL();
} else {
policy_url = new URI(expanded_uri).toURL();
}
if (debug != null) {
debug.println("reading " + policy_url);
}
if (init(policy_url, newInfo, false)) {
loaded_policy = true;
}
} catch (Exception e) {
if (debug != null) {
debug.println(
"Debug info only. Error reading policy " +e);
e.printStackTrace();
}
// ignore that policy
}
n++;
}
return Boolean.valueOf(loaded_policy);
}
});
return loadedPolicy;
}
/**
* Reads a policy configuration into the Policy object using a
* Reader object.
*/
private boolean init(URL policy, PolicyInfo newInfo, boolean defPolicy) {
// skip parsing policy file if it has been previously parsed and
// has syntax errors
if (badPolicyURLs.get().contains(policy)) {
if (debug != null) {
debug.println("skipping bad policy file: " + policy);
}
return false;
}
try (InputStreamReader isr =
getInputStreamReader(PolicyUtil.getInputStream(policy))) {
PolicyParser pp = new PolicyParser(expandProperties);
pp.read(isr);
KeyStore keyStore = null;
try {
keyStore = PolicyUtil.getKeyStore
(policy,
pp.getKeyStoreUrl(),
pp.getKeyStoreType(),
pp.getKeyStoreProvider(),
pp.getStorePassURL(),
debug);
} catch (Exception e) {
// ignore, treat it like we have no keystore
if (debug != null) {
debug.println("Debug info only. Ignoring exception.");
e.printStackTrace();
}
}
Enumeration<PolicyParser.GrantEntry> enum_ = pp.grantElements();
while (enum_.hasMoreElements()) {
PolicyParser.GrantEntry ge = enum_.nextElement();
addGrantEntry(ge, keyStore, newInfo);
}
return true;
} catch (PolicyParser.ParsingException pe) {
if (defPolicy) {
throw new InternalError("Failed to load default.policy", pe);
}
// record bad policy file to avoid later reparsing it
badPolicyURLs.updateAndGet(k -> {
k.add(policy);
return k;
});
Object[] source = {policy, pe.getNonlocalizedMessage()};
System.err.println(LocalizedMessage.getNonlocalized
(POLICY + ".error.parsing.policy.message", source));
if (debug != null) {
pe.printStackTrace();
}
} catch (Exception e) {
if (defPolicy) {
throw new InternalError("Failed to load default.policy", e);
}
if (debug != null) {
debug.println("error parsing "+policy);
debug.println(e.toString());
e.printStackTrace();
}
}
return false;
}
private InputStreamReader getInputStreamReader(InputStream is)
throws IOException {
/*
* Read in policy using UTF-8 by default.
*
* Check non-standard system property to see if the default encoding
* should be used instead.
*/
return (notUtf8)
? new InputStreamReader(is)
: new InputStreamReader(is, "UTF-8");
}
private void initStaticPolicy(final PolicyInfo newInfo) {
if (debug != null) {
debug.println("Initializing with static permissions");
}
AccessController.doPrivileged(new PrivilegedAction<>() {
@Override
public Void run() {
PolicyEntry pe = new PolicyEntry(new CodeSource(null,
(Certificate[]) null));
pe.add(SecurityConstants.LOCAL_LISTEN_PERMISSION);
pe.add(new PropertyPermission("java.version",
SecurityConstants.PROPERTY_READ_ACTION));
pe.add(new PropertyPermission("java.vendor",
SecurityConstants.PROPERTY_READ_ACTION));
pe.add(new PropertyPermission("java.vendor.url",
SecurityConstants.PROPERTY_READ_ACTION));
pe.add(new PropertyPermission("java.class.version",
SecurityConstants.PROPERTY_READ_ACTION));
pe.add(new PropertyPermission("os.name",
SecurityConstants.PROPERTY_READ_ACTION));
pe.add(new PropertyPermission("os.version",
SecurityConstants.PROPERTY_READ_ACTION));
pe.add(new PropertyPermission("os.arch",
SecurityConstants.PROPERTY_READ_ACTION));
pe.add(new PropertyPermission("file.separator",
SecurityConstants.PROPERTY_READ_ACTION));
pe.add(new PropertyPermission("path.separator",
SecurityConstants.PROPERTY_READ_ACTION));
pe.add(new PropertyPermission("line.separator",
SecurityConstants.PROPERTY_READ_ACTION));
pe.add(new PropertyPermission
("java.specification.version",
SecurityConstants.PROPERTY_READ_ACTION));
pe.add(new PropertyPermission
("java.specification.vendor",
SecurityConstants.PROPERTY_READ_ACTION));
pe.add(new PropertyPermission
("java.specification.name",
SecurityConstants.PROPERTY_READ_ACTION));
pe.add(new PropertyPermission
("java.vm.specification.version",
SecurityConstants.PROPERTY_READ_ACTION));
pe.add(new PropertyPermission
("java.vm.specification.vendor",
SecurityConstants.PROPERTY_READ_ACTION));
pe.add(new PropertyPermission
("java.vm.specification.name",
SecurityConstants.PROPERTY_READ_ACTION));
pe.add(new PropertyPermission("java.vm.version",
SecurityConstants.PROPERTY_READ_ACTION));
pe.add(new PropertyPermission("java.vm.vendor",
SecurityConstants.PROPERTY_READ_ACTION));
pe.add(new PropertyPermission("java.vm.name",
SecurityConstants.PROPERTY_READ_ACTION));
// No need to sync because noone has access to newInfo yet
newInfo.policyEntries.add(pe);
return null;
}
});
}
/**
* Given a GrantEntry, create a codeSource.
*
* @return null if signedBy alias is not recognized
*/
private CodeSource getCodeSource(PolicyParser.GrantEntry ge, KeyStore keyStore,
PolicyInfo newInfo) throws java.net.MalformedURLException
{
Certificate[] certs = null;
if (ge.signedBy != null) {
certs = getCertificates(keyStore, ge.signedBy, newInfo);
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 entry");
}
return null;
}
}
URL location;
if (ge.codeBase != null)
location = new URL(ge.codeBase);
else
location = null;
return (canonicalizeCodebase(new CodeSource(location, certs),false));
}
/**
* Add one policy entry to the list.
*/
private void addGrantEntry(PolicyParser.GrantEntry ge,
KeyStore keyStore, PolicyInfo newInfo) {
if (debug != null) {
debug.println("Adding policy entry: ");
debug.println(" signedBy " + ge.signedBy);
debug.println(" codeBase " + ge.codeBase);
if (ge.principals != null) {
for (PolicyParser.PrincipalEntry pppe : ge.principals) {
debug.println(" " + pppe.toString());
}
}
}
try {
CodeSource codesource = getCodeSource(ge, keyStore, newInfo);
// skip if signedBy alias was unknown...
if (codesource == null) return;
// perform keystore alias principal replacement.
// for example, if alias resolves to X509 certificate,
// replace principal with: <X500Principal class> <SubjectDN>
// -- skip if alias is unknown
if (replacePrincipals(ge.principals, keyStore) == false)
return;
PolicyEntry entry = new PolicyEntry(codesource, ge.principals);
Enumeration<PolicyParser.PermissionEntry> enum_ =
ge.permissionElements();
while (enum_.hasMoreElements()) {
PolicyParser.PermissionEntry pe = enum_.nextElement();
try {
// perform ${{ ... }} expansions within permission name
expandPermissionName(pe, keyStore);
// XXX special case PrivateCredentialPermission-SELF
Permission perm;
if (pe.permission.equals
("javax.security.auth.PrivateCredentialPermission") &&
pe.name.endsWith(" self")) {
pe.name = pe.name.substring(0, pe.name.indexOf("self"))
+ SELF;
}
// check for self
if (pe.name != null && pe.name.indexOf(SELF) != -1) {
// Create a "SelfPermission" , it could be an
// an unresolved permission which will be resolved
// when implies is called
// Add it to entry
Certificate[] certs;
if (pe.signedBy != null) {
certs = getCertificates(keyStore,
pe.signedBy,
newInfo);
} else {
certs = null;
}
perm = new SelfPermission(pe.permission,
pe.name,
pe.action,
certs);
} 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,
newInfo);
} else {
certs = null;
}
// only add if we had no signer or we had
// 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) {
Object[] source = {pe.permission,
ite.getTargetException().toString()};
System.err.println(
LocalizedMessage.getNonlocalized(
POLICY + ".error.adding.Permission.perm.message",
source));
} catch (Exception e) {
Object[] source = {pe.permission,
e.toString()};
System.err.println(
LocalizedMessage.getNonlocalized(
POLICY + ".error.adding.Permission.perm.message",
source));
}
}
// No need to sync because noone has access to newInfo yet
newInfo.policyEntries.add(entry);
} catch (Exception e) {
Object[] source = {e.toString()};
System.err.println(
LocalizedMessage.getNonlocalized(
POLICY + ".error.adding.Entry.message",
source));
}
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
{
Class<?> pc = Class.forName(type, false, null);
Permission answer = getKnownPermission(pc, name, actions);
if (answer != null) {
return answer;
}
if (!Permission.class.isAssignableFrom(pc)) {
// not the right subtype
throw new ClassCastException(type + " is not a Permission");
}
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 });
}
}
}
/**
* Creates one of the well-known permissions in the java.base module
* directly instead of via reflection. Keep list short to not penalize
* permissions from other modules.
*/
private static Permission getKnownPermission(Class<?> claz, String name,
String actions) {
if (claz.equals(FilePermission.class)) {
return new FilePermission(name, actions);
} else if (claz.equals(SocketPermission.class)) {
return new SocketPermission(name, actions);
} else if (claz.equals(RuntimePermission.class)) {
return new RuntimePermission(name, actions);
} else if (claz.equals(PropertyPermission.class)) {
return new PropertyPermission(name, actions);
} else if (claz.equals(NetPermission.class)) {
return new NetPermission(name, actions);
} else if (claz.equals(AllPermission.class)) {
return SecurityConstants.ALL_PERMISSION;
} else if (claz.equals(SecurityPermission.class)) {
return new SecurityPermission(name, actions);
} else {
return null;
}
}
/**
* Creates one of the well-known principals in the java.base module
* directly instead of via reflection. Keep list short to not penalize
* principals from other modules.
*/
private static Principal getKnownPrincipal(Class<?> claz, String name) {
if (claz.equals(X500Principal.class)) {
return new X500Principal(name);
} else {
return null;
}
}
/**
* Fetch all certs associated with this alias.
*/
private Certificate[] getCertificates
(KeyStore keyStore, String aliases, PolicyInfo newInfo) {
List<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
synchronized (newInfo.aliasMapping) {
cert = (Certificate)newInfo.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) {
newInfo.aliasMapping.put(alias, cert);
newInfo.aliasMapping.put(cert, alias);
}
}
}
if (cert != null) {
if (vcerts == null)
vcerts = new ArrayList<>();
vcerts.add(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.toArray(certs);
return certs;
} else {
return null;
}
}
/**
* Refreshes the policy object by re-reading all the policy files.
*/
@Override public void refresh() {
init(url);
}
/**
* Evaluates the global policy for the permissions granted to
* the ProtectionDomain and tests whether the permission is
* granted.
*
* @param pd the ProtectionDomain to test
* @param p the Permission object to be tested for implication.
*
* @return true if "permission" is a proper subset of a permission
* granted to this ProtectionDomain.
*
* @see java.security.ProtectionDomain
*/
@Override
public boolean implies(ProtectionDomain pd, Permission p) {
PolicyInfo pi = policyInfo.get();
ProtectionDomainCache pdMap = pi.getPdMapping();
PermissionCollection pc = pdMap.get(pd);
if (pc != null) {
return pc.implies(p);
}
pc = getPermissions(pd);
if (pc == null) {
return false;
}
// cache mapping of protection domain to its PermissionCollection
pdMap.put(pd, pc);
return pc.implies(p);
}
/**
* Examines this <code>Policy</code> and returns the permissions granted
* to the specified <code>ProtectionDomain</code>. This includes
* the permissions currently associated with the domain as well
* as the policy permissions granted to the domain's
* CodeSource, ClassLoader, and Principals.
*
* <p> Note that this <code>Policy</code> implementation has
* special handling for PrivateCredentialPermissions.
* When this method encounters a <code>PrivateCredentialPermission</code>
* which specifies "self" as the <code>Principal</code> class and name,
* it does not add that <code>Permission</code> to the returned
* <code>PermissionCollection</code>. Instead, it builds
* a new <code>PrivateCredentialPermission</code>
* for each <code>Principal</code> associated with the provided
* <code>Subject</code>. Each new <code>PrivateCredentialPermission</code>
* contains the same Credential class as specified in the
* originally granted permission, as well as the Class and name
* for the respective <code>Principal</code>.
*
* @param domain the Permissions granted to this
* <code>ProtectionDomain</code> are returned.
*
* @return the Permissions granted to the provided
* <code>ProtectionDomain</code>.
*/
@Override
public PermissionCollection getPermissions(ProtectionDomain domain) {
Permissions perms = new Permissions();
if (domain == null)
return perms;
// first get policy perms
getPermissions(perms, domain);
// add static perms
// - adding static perms after policy perms is necessary
// to avoid a regression for 4301064
PermissionCollection pc = domain.getPermissions();
if (pc != null) {
synchronized (pc) {
Enumeration<Permission> e = pc.elements();
while (e.hasMoreElements()) {
perms.add(FilePermCompat.newPermPlusAltPath(e.nextElement()));
}
}
}
return perms;
}
/**
* Examines this Policy and creates a PermissionCollection object with
* the set of permissions for the specified CodeSource.
*
* @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.
*/
@Override
public PermissionCollection getPermissions(CodeSource codesource) {
return getPermissions(new Permissions(), codesource);
}
/**
* Examines the global policy and returns the provided Permissions
* object with additional permissions granted to the specified
* ProtectionDomain.
*
* @param perms the Permissions to populate
* @param pd the ProtectionDomain associated with the caller.
*
* @return the set of Permissions according to the policy.
*/
private PermissionCollection getPermissions(Permissions perms,
ProtectionDomain pd ) {
if (debug != null) {
debug.println("getPermissions:\n\t" + printPD(pd));
}
final CodeSource cs = pd.getCodeSource();
if (cs == null)
return perms;
CodeSource canonCodeSource = AccessController.doPrivileged(
new java.security.PrivilegedAction<>(){
@Override
public CodeSource run() {
return canonicalizeCodebase(cs, true);
}
});
return getPermissions(perms, canonCodeSource, pd.getPrincipals());
}
/**
* Examines the global policy and returns the provided Permissions
* object with additional permissions granted to the specified
* CodeSource.
*
* @param perms the permissions to populate
* @param cs 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.
*/
private PermissionCollection getPermissions(Permissions perms,
final CodeSource cs) {
if (cs == null)
return perms;
CodeSource canonCodeSource = AccessController.doPrivileged(
new PrivilegedAction<>(){
@Override
public CodeSource run() {
return canonicalizeCodebase(cs, true);
}
});
return getPermissions(perms, canonCodeSource, null);
}
private Permissions getPermissions(Permissions perms,
final CodeSource cs,
Principal[] principals) {
PolicyInfo pi = policyInfo.get();
for (PolicyEntry entry : pi.policyEntries) {
addPermissions(perms, cs, principals, entry);
}
return perms;
}
private void addPermissions(Permissions perms,
final CodeSource cs,
Principal[] principals,
final PolicyEntry entry) {
if (debug != null) {
debug.println("evaluate codesources:\n" +
"\tPolicy CodeSource: " + entry.getCodeSource() + "\n" +
"\tActive CodeSource: " + cs);
}
// check to see if the CodeSource implies
Boolean imp = AccessController.doPrivileged
(new PrivilegedAction<>() {
@Override
public Boolean run() {
return entry.getCodeSource().implies(cs);
}
});
if (!imp.booleanValue()) {
if (debug != null) {
debug.println("evaluation (codesource) failed");
}
// CodeSource does not imply - return and try next policy entry
return;
}
// check to see if the Principals imply
List<PolicyParser.PrincipalEntry> entryPs = entry.getPrincipals();
if (debug != null) {
List<PolicyParser.PrincipalEntry> accPs = new ArrayList<>();
if (principals != null) {
for (int i = 0; i < principals.length; i++) {
accPs.add(new PolicyParser.PrincipalEntry
(principals[i].getClass().getName(),
principals[i].getName()));
}
}
debug.println("evaluate principals:\n" +
"\tPolicy Principals: " + entryPs + "\n" +
"\tActive Principals: " + accPs);
}
if (entryPs == null || entryPs.isEmpty()) {
// policy entry has no principals -
// add perms regardless of principals in current ACC
addPerms(perms, principals, entry);
if (debug != null) {
debug.println("evaluation (codesource/principals) passed");
}
return;
} else if (principals == null || principals.length == 0) {
// current thread has no principals but this policy entry
// has principals - perms are not added
if (debug != null) {
debug.println("evaluation (principals) failed");
}
return;
}
// current thread has principals and this policy entry
// has principals. see if policy entry principals match
// principals in current ACC
for (PolicyParser.PrincipalEntry pppe : entryPs) {
// Check for wildcards
if (pppe.isWildcardClass()) {
// a wildcard class matches all principals in current ACC
continue;
}
if (pppe.isWildcardName()) {
// a wildcard name matches any principal with the same class
if (wildcardPrincipalNameImplies(pppe.principalClass,
principals)) {
continue;
}
if (debug != null) {
debug.println("evaluation (principal name wildcard) failed");
}
// policy entry principal not in current ACC -
// immediately return and go to next policy entry
return;
}
Set<Principal> pSet = new HashSet<>(Arrays.asList(principals));
Subject subject = new Subject(true, pSet,
Collections.EMPTY_SET,
Collections.EMPTY_SET);
try {
ClassLoader cl = Thread.currentThread().getContextClassLoader();
Class<?> pClass = Class.forName(pppe.principalClass, false, cl);
Principal p = getKnownPrincipal(pClass, pppe.principalName);
if (p == null) {
if (!Principal.class.isAssignableFrom(pClass)) {
// not the right subtype
throw new ClassCastException(pppe.principalClass +
" is not a Principal");
}
Constructor<?> c = pClass.getConstructor(PARAMS1);
p = (Principal)c.newInstance(new Object[] {
pppe.principalName });
}
if (debug != null) {
debug.println("found Principal " + p.getClass().getName());
}
// check if the Principal implies the current
// thread's principals
if (!p.implies(subject)) {
if (debug != null) {
debug.println("evaluation (principal implies) failed");
}
// policy principal does not imply the current Subject -
// immediately return and go to next policy entry
return;
}
} catch (Exception e) {
// fall back to default principal comparison.
// see if policy entry principal is in current ACC
if (debug != null) {
e.printStackTrace();
}
if (!pppe.implies(subject)) {
if (debug != null) {
debug.println("evaluation (default principal implies) failed");
}
// policy entry principal not in current ACC -
// immediately return and go to next policy entry
return;
}
}
// either the principal information matched,
// or the Principal.implies succeeded.
// continue loop and test the next policy principal
}
// all policy entry principals were found in the current ACC -
// grant the policy permissions
if (debug != null) {
debug.println("evaluation (codesource/principals) passed");
}
addPerms(perms, principals, entry);
}
/**
* Returns true if the array of principals contains at least one
* principal of the specified class.
*/
private static boolean wildcardPrincipalNameImplies(String principalClass,
Principal[] principals)
{
for (Principal p : principals) {
if (principalClass.equals(p.getClass().getName())) {
return true;
}
}
return false;
}
private void addPerms(Permissions perms,
Principal[] accPs,
PolicyEntry entry) {
for (int i = 0; i < entry.permissions.size(); i++) {
Permission p = entry.permissions.get(i);
if (debug != null) {
debug.println(" granting " + p);
}
if (p instanceof SelfPermission) {
// handle "SELF" permissions
expandSelf((SelfPermission)p,
entry.getPrincipals(),
accPs,
perms);
} else {
perms.add(FilePermCompat.newPermPlusAltPath(p));
}
}
}
/**
* @param sp the SelfPermission that needs to be expanded.
*
* @param entryPs list of principals for the Policy entry.
*
* @param pdp Principal array from the current ProtectionDomain.
*
* @param perms the PermissionCollection where the individual
* Permissions will be added after expansion.
*/
private void expandSelf(SelfPermission sp,
List<PolicyParser.PrincipalEntry> entryPs,
Principal[] pdp,
Permissions perms) {
if (entryPs == null || entryPs.isEmpty()) {
// No principals in the grant to substitute
if (debug != null) {
debug.println("Ignoring permission "
+ sp.getSelfType()
+ " with target name ("
+ sp.getSelfName() + "). "
+ "No Principal(s) specified "
+ "in the grant clause. "
+ "SELF-based target names are "
+ "only valid in the context "
+ "of a Principal-based grant entry."
);
}
return;
}
int startIndex = 0;
int v;
StringBuilder sb = new StringBuilder();
while ((v = sp.getSelfName().indexOf(SELF, startIndex)) != -1) {
// add non-SELF string
sb.append(sp.getSelfName().substring(startIndex, v));
// expand SELF
Iterator<PolicyParser.PrincipalEntry> pli = entryPs.iterator();
while (pli.hasNext()) {
PolicyParser.PrincipalEntry pppe = pli.next();
String[][] principalInfo = getPrincipalInfo(pppe,pdp);
for (int i = 0; i < principalInfo.length; i++) {
if (i != 0) {
sb.append(", ");
}
sb.append(principalInfo[i][0] + " " +
"\"" + principalInfo[i][1] + "\"");
}
if (pli.hasNext()) {
sb.append(", ");
}
}
startIndex = v + SELF.length();
}
// add remaining string (might be the entire string)
sb.append(sp.getSelfName().substring(startIndex));
if (debug != null) {
debug.println(" expanded:\n\t" + sp.getSelfName()
+ "\n into:\n\t" + sb.toString());
}
try {
// first try to instantiate the permission
perms.add(FilePermCompat.newPermPlusAltPath(getInstance(sp.getSelfType(),
sb.toString(),
sp.getSelfActions())));
} catch (ClassNotFoundException cnfe) {
// ok, the permission is not in the bootclasspath.
// before we add an UnresolvedPermission, check to see
// whether this perm already belongs to the collection.
// if so, use that perm's ClassLoader to create a new
// one.
Class<?> pc = null;
synchronized (perms) {
Enumeration<Permission> e = perms.elements();
while (e.hasMoreElements()) {
Permission pElement = e.nextElement();
if (pElement.getClass().getName().equals(sp.getSelfType())) {
pc = pElement.getClass();
break;
}
}
}
if (pc == null) {
// create an UnresolvedPermission
perms.add(new UnresolvedPermission(sp.getSelfType(),
sb.toString(),
sp.getSelfActions(),
sp.getCerts()));
} else {
try {
// we found an instantiated permission.
// use its class loader to instantiate a new permission.
Constructor<?> c;
// name parameter can not be null
if (sp.getSelfActions() == null) {
try {
c = pc.getConstructor(PARAMS1);
perms.add((Permission)c.newInstance
(new Object[] {sb.toString()}));
} catch (NoSuchMethodException ne) {
c = pc.getConstructor(PARAMS2);
perms.add((Permission)c.newInstance
(new Object[] {sb.toString(),
sp.getSelfActions() }));
}
} else {
c = pc.getConstructor(PARAMS2);
perms.add((Permission)c.newInstance
(new Object[] {sb.toString(),
sp.getSelfActions()}));
}
} catch (Exception nme) {
if (debug != null) {
debug.println("self entry expansion " +
" instantiation failed: "
+ nme.toString());
}
}
}
} catch (Exception e) {
if (debug != null) {
debug.println(e.toString());
}
}
}
/**
* 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
(PolicyParser.PrincipalEntry pe, Principal[] pdp) {
// 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 (!pe.isWildcardClass() && !pe.isWildcardName()) {
// build an info array for the principal
// from the Policy entry
String[][] info = new String[1][2];
info[0][0] = pe.principalClass;
info[0][1] = pe.principalName;
return info;
} else if (!pe.isWildcardClass() && pe.isWildcardName()) {
// build an info array for every principal
// in the current domain which has a principal class
// that is equal to policy entry principal class name
List<Principal> plist = new ArrayList<>();
for (int i = 0; i < pdp.length; i++) {
if (pe.principalClass.equals(pdp[i].getClass().getName()))
plist.add(pdp[i]);
}
String[][] info = new String[plist.size()][2];
int i = 0;
for (Principal p : plist) {
info[i][0] = p.getClass().getName();
info[i][1] = p.getName();
i++;
}
return info;
} else {
// build an info array for every
// one of the current Domain's principals
String[][] info = new String[pdp.length][2];
for (int i = 0; i < pdp.length; i++) {
info[i][0] = pdp[i].getClass().getName();
info[i][1] = pdp[i].getName();
}
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).
*/
protected 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;
List<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) {
String path = null;
CodeSource canonCs = cs;
URL u = cs.getLocation();
if (u != null) {
if (u.getProtocol().equals("jar")) {
// unwrap url embedded inside jar url
String spec = u.getFile();
int separator = spec.indexOf("!/");
if (separator != -1) {
try {
u = new URL(spec.substring(0, separator));
} catch (MalformedURLException e) {
// Fail silently. In this case, url stays what
// it was above
}
}
}
if (u.getProtocol().equals("file")) {
boolean isLocalFile = false;
String host = u.getHost();
isLocalFile = (host == null || host.equals("") ||
host.equals("~") || host.equalsIgnoreCase("localhost"));
if (isLocalFile) {
path = u.getFile().replace('/', File.separatorChar);
path = ParseUtil.decode(path);
}
}
}
if (path != null) {
try {
URL csUrl = null;
path = canonPath(path);
csUrl = ParseUtil.fileToEncodedURL(new File(path));
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) {
canonCs = new CodeSource(cs.getLocation(),
getSignerCertificates(cs));
}
}
} else {
if (extractSignerCerts) {
canonCs = new CodeSource(cs.getLocation(),
getSignerCertificates(cs));
}
}
return canonCs;
}
// Wrapper to return a canonical path that avoids calling getCanonicalPath()
// with paths that are intended to match all entries in the directory
private static String canonPath(String path) throws IOException {
if (path.endsWith("*")) {
path = path.substring(0, path.length()-1) + "-";
path = new File(path).getCanonicalPath();
return path.substring(0, path.length()-1) + "*";
} else {
return new File(path).getCanonicalPath();
}
}
private String printPD(ProtectionDomain pd) {
Principal[] principals = pd.getPrincipals();
String pals = "<no principals>";
if (principals != null && principals.length > 0) {
StringBuilder palBuf = new StringBuilder("(principals ");
for (int i = 0; i < principals.length; i++) {
palBuf.append(principals[i].getClass().getName() +
" \"" + principals[i].getName() +
"\"");
if (i < principals.length-1)
palBuf.append(", ");
else
palBuf.append(")");
}
pals = palBuf.toString();
}
return "PD CodeSource: "
+ pd.getCodeSource()
+"\n\t" + "PD ClassLoader: "
+ pd.getClassLoader()
+"\n\t" + "PD Principals: "
+ pals;
}
/**
* return true if no replacement was performed,
* or if replacement succeeded.
*/
private boolean replacePrincipals(
List<PolicyParser.PrincipalEntry> principals, KeyStore keystore) {
if (principals == null || principals.isEmpty() || keystore == null)
return true;
for (PolicyParser.PrincipalEntry pppe : principals) {
if (pppe.isReplaceName()) {
// perform replacement
// (only X509 replacement is possible now)
String name;
if ((name = getDN(pppe.principalName, keystore)) == null) {
return false;
}
if (debug != null) {
debug.println(" Replacing \"" +
pppe.principalName +
"\" with " +
X500PRINCIPAL + "/\"" +
name +
"\"");
}
pppe.principalClass = X500PRINCIPAL;
pppe.principalName = name;
}
}
// return true if no replacement was performed,
// or if replacement succeeded
return true;
}
private void expandPermissionName(PolicyParser.PermissionEntry pe,
KeyStore keystore) throws Exception {
// short cut the common case
if (pe.name == null || pe.name.indexOf("${{", 0) == -1) {
return;
}
int startIndex = 0;
int b, e;
StringBuilder sb = new StringBuilder();
while ((b = pe.name.indexOf("${{", startIndex)) != -1) {
e = pe.name.indexOf("}}", b);
if (e < 1) {
break;
}
sb.append(pe.name.substring(startIndex, b));
// get the value in ${{...}}
String value = pe.name.substring(b+3, e);
// parse up to the first ':'
int colonIndex;
String prefix = value;
String suffix;
if ((colonIndex = value.indexOf(':')) != -1) {
prefix = value.substring(0, colonIndex);
}
// handle different prefix possibilities
if (prefix.equalsIgnoreCase("self")) {
// do nothing - handled later
sb.append(pe.name.substring(b, e+2));
startIndex = e+2;
continue;
} else if (prefix.equalsIgnoreCase("alias")) {
// get the suffix and perform keystore alias replacement
if (colonIndex == -1) {
Object[] source = {pe.name};
throw new Exception(
LocalizedMessage.getNonlocalized(
"alias.name.not.provided.pe.name.",
source));
}
suffix = value.substring(colonIndex+1);
if ((suffix = getDN(suffix, keystore)) == null) {
Object[] source = {value.substring(colonIndex+1)};
throw new Exception(
LocalizedMessage.getNonlocalized(
"unable.to.perform.substitution.on.alias.suffix",
source));
}
sb.append(X500PRINCIPAL + " \"" + suffix + "\"");
startIndex = e+2;
} else {
Object[] source = {prefix};
throw new Exception(
LocalizedMessage.getNonlocalized(
"substitution.value.prefix.unsupported",
source));
}
}
// copy the rest of the value
sb.append(pe.name.substring(startIndex));
// replace the name with expanded value
if (debug != null) {
debug.println(" Permission name expanded from:\n\t" +
pe.name + "\nto\n\t" + sb.toString());
}
pe.name = sb.toString();
}
private String getDN(String alias, KeyStore keystore) {
Certificate cert = null;
try {
cert = keystore.getCertificate(alias);
} catch (Exception e) {
if (debug != null) {
debug.println(" Error retrieving certificate for '" +
alias +
"': " +
e.toString());
}
return null;
}
if (cert == null || !(cert instanceof X509Certificate)) {
if (debug != null) {
debug.println(" -- No certificate for '" +
alias +
"' - ignoring entry");
}
return null;
} else {
X509Certificate x509Cert = (X509Certificate)cert;
// 4702543: X500 names with an EmailAddress
// were encoded incorrectly. create new
// X500Principal name with correct encoding
X500Principal p = new X500Principal
(x509Cert.getSubjectX500Principal().toString());
return p.getName();
}
}
/**
* 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>
* permission java.io.File "/tmp", "read,write",
* signedBy "Duke";
* </pre>
* is represented internally
* <pre>
*
* FilePermission f = new FilePermission("/tmp", "read,write");
* PublicKey p = publickeys.get("Duke");
* URL u = InetAddress.getLocalHost();
* CodeBase c = new CodeBase( p, u );
* pe = new PolicyEntry(f, c);
* </pre>
*
* @author Marianne Mueller
* @author Roland Schemers
* @see java.security.CodeSource
* @see java.security.Policy
* @see java.security.Permissions
* @see java.security.ProtectionDomain
*/
private static class PolicyEntry {
private final CodeSource codesource;
final List<Permission> permissions;
private final List<PolicyParser.PrincipalEntry> principals;
/**
* Given a Permission and a CodeSource, create a policy entry.
*
* XXX Decide if/how to add validity fields and "purpose" fields to
* XXX policy entries
*
* @param cs the CodeSource, which encapsulates the URL and the
* public key
* attributes from the policy config file. Validity checks
* are performed on the public key before PolicyEntry is
* called.
*
*/
PolicyEntry(CodeSource cs, List<PolicyParser.PrincipalEntry> principals)
{
this.codesource = cs;
this.permissions = new ArrayList<Permission>();
this.principals = principals; // can be null
}
PolicyEntry(CodeSource cs)
{
this(cs, null);
}
List<PolicyParser.PrincipalEntry> getPrincipals() {
return principals; // can be null
}
/**
* add a Permission object to this entry.
* No need to sync add op because perms are added to entry only
* while entry is being initialized
*/
void add(Permission p) {
permissions.add(p);
}
/**
* Return the CodeSource for this policy entry
*/
CodeSource getCodeSource() {
return codesource;
}
@Override public String toString(){
StringBuilder sb = new StringBuilder();
sb.append(ResourcesMgr.getString("LPARAM"));
sb.append(getCodeSource());
sb.append("\n");
for (int j = 0; j < permissions.size(); j++) {
Permission p = permissions.get(j);
sb.append(ResourcesMgr.getString("SPACE"));
sb.append(ResourcesMgr.getString("SPACE"));
sb.append(p);
sb.append(ResourcesMgr.getString("NEWLINE"));
}
sb.append(ResourcesMgr.getString("RPARAM"));
sb.append(ResourcesMgr.getString("NEWLINE"));
return sb.toString();
}
}
private static class SelfPermission extends Permission {
private static final long serialVersionUID = -8315562579967246806L;
/**
* The class name of the Permission class that will be
* created when this self permission is expanded .
*
* @serial
*/
private String type;
/**
* The permission name.
*
* @serial
*/
private String name;
/**
* The actions of the permission.
*
* @serial
*/
private String actions;
/**
* The certs of the permission.
*
* @serial
*/
private Certificate[] certs;
/**
* Creates a new SelfPermission containing the permission
* information needed later to expand the self
* @param type the class name of the Permission class that will be
* created when this permission is expanded and if necessary 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).
*/
public SelfPermission(String type, String name, String actions,
Certificate[] certs)
{
super(type);
if (type == null) {
throw new NullPointerException
(LocalizedMessage.getNonlocalized("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
List<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 Certificate[signerCerts.size()];
signerCerts.toArray(this.certs);
}
}
}
}
/**
* This method always returns false for SelfPermission permissions.
* That is, an SelfPermission never considered to
* imply another permission.
*
* @param p the permission to check against.
*
* @return false.
*/
@Override public boolean implies(Permission p) {
return false;
}
/**
* Checks two SelfPermission objects for equality.
*
* Checks that <i>obj</i> is an SelfPermission, and has
* the same type (class) name, permission name, actions, and
* certificates as this object.
*
* @param obj the object we are testing for equality with this object.
*
* @return true if obj is an SelfPermission, and has the same
* type (class) name, permission name, actions, and
* certificates as this object.
*/
@Override public boolean equals(Object obj) {
if (obj == this)
return true;
if (! (obj instanceof SelfPermission))
return false;
SelfPermission that = (SelfPermission) obj;
if (!(this.type.equals(that.type) &&
this.name.equals(that.name) &&
this.actions.equals(that.actions)))
return false;
if (this.certs.length != that.certs.length)
return false;
int i,j;
boolean match;
for (i = 0; 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; 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.
*/
@Override 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 SelfPermission. That is, the actions for the
* permission that will be created when this SelfPermission
* is resolved may be non-null, but an SelfPermission
* itself is never considered to have any actions.
*
* @return the empty string "".
*/
@Override public String getActions() {
return "";
}
public String getSelfType() {
return type;
}
public String getSelfName() {
return name;
}
public String getSelfActions() {
return actions;
}
public Certificate[] getCerts() {
return certs;
}
/**
* Returns a string describing this SelfPermission. 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 SelfPermission.
*/
@Override public String toString() {
return "(SelfPermission " + type + " " + name + " " + actions + ")";
}
}
/**
* holds policy information that we need to synch on
*/
private static class PolicyInfo {
private static final boolean verbose = false;
// Stores grant entries in the policy
final List<PolicyEntry> policyEntries;
// Maps aliases to certs
final Map<Object, Object> aliasMapping;
// Maps ProtectionDomain to PermissionCollection
private final ProtectionDomainCache[] pdMapping;
private java.util.Random random;
PolicyInfo(int numCaches) {
policyEntries = new ArrayList<>();
aliasMapping = Collections.synchronizedMap(new HashMap<>(11));
pdMapping = new ProtectionDomainCache[numCaches];
JavaSecurityProtectionDomainAccess jspda
= SharedSecrets.getJavaSecurityProtectionDomainAccess();
for (int i = 0; i < numCaches; i++) {
pdMapping[i] = jspda.getProtectionDomainCache();
}
if (numCaches > 1) {
random = new java.util.Random();
}
}
ProtectionDomainCache getPdMapping() {
if (pdMapping.length == 1) {
return pdMapping[0];
} else {
int i = java.lang.Math.abs(random.nextInt() % pdMapping.length);
return pdMapping[i];
}
}
}
}