| /* |
| * $Header: /cvshome/build/org.osgi.service.condpermadmin/src/org/osgi/service/condpermadmin/BundleSignerCondition.java,v 1.10 2006/06/16 16:31:37 hargrave Exp $ |
| * |
| * Copyright (c) OSGi Alliance (2005, 2006). All Rights Reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.osgi.service.condpermadmin; |
| |
| import org.eclipse.osgi.framework.internal.core.AbstractBundle; |
| import org.osgi.framework.Bundle; |
| |
| /** |
| * Condition to test if the signer of a bundle matches a pattern. Since the bundle's signer can |
| * only change when the bundle is updated, this condition is immutable. |
| * <p> |
| * The condition expressed using a single String that specifies a Distinguished |
| * Name (DN) chain to match bundle signers against. DN's are encoded using IETF |
| * RFC 2253. Usually signers use certificates that are issued by certificate |
| * authorities, which also have a corresponding DN and certificate. The |
| * certificate authorities can form a chain of trust where the last DN and |
| * certificate is known by the framework. The signer of a bundle is expressed as |
| * signers DN followed by the DN of its issuer followed by the DN of the next |
| * issuer until the DN of the root certificate authority. Each DN is separated |
| * by a semicolon. |
| * <p> |
| * A bundle can satisfy this condition if one of its signers has a DN chain that |
| * matches the DN chain used to construct this condition. Wildcards (`*') can be |
| * used to allow greater flexibility in specifying the DN chains. Wildcards can |
| * be used in place of DNs, RDNs, or the value in an RDN. If a wildcard is used |
| * for a value of an RDN, the value must be exactly "*" and will match any value |
| * for the corresponding type in that RDN. If a wildcard is used for a RDN, it |
| * must be the first RDN and will match any number of RDNs (including zero |
| * RDNs). |
| * |
| * @version $Revision: 1.10 $ |
| */ |
| public class BundleSignerCondition { |
| private static final String CONDITION_TYPE = "org.osgi.service.condpermadmin.BundleSignerCondition"; |
| /** |
| * Constructs a Condition that tries to match the passed Bundle's location |
| * to the location pattern. |
| * |
| * @param bundle The Bundle being evaluated. |
| * @param info The ConditionInfo to construct the condition for. The args of |
| * the ConditionInfo specify a single String specifying the chain of |
| * distinguished names pattern to match against the signer of the |
| * Bundle. |
| * @return A Condition which checks the signers of the specified bundle. |
| */ |
| static public Condition getCondition(Bundle bundle, ConditionInfo info) { |
| if (!CONDITION_TYPE.equals(info.getType())) |
| throw new IllegalArgumentException("ConditionInfo must be of type \"" + CONDITION_TYPE + "\""); |
| String[] args = info.getArgs(); |
| if (args.length != 1) |
| throw new IllegalArgumentException("Illegal number of args: " + args.length); |
| // implementation specific code used here |
| AbstractBundle ab = (AbstractBundle) bundle; |
| return ab.getBundleData().matchDNChain(args[0]) ? Condition.TRUE : Condition.FALSE; |
| } |
| |
| private BundleSignerCondition() { |
| // private constructor to prevent objects of this type |
| } |
| } |