| /* |
| * Copyright (c) OSGi Alliance (2004, 2009). 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.util.gsm; |
| |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| |
| import org.osgi.framework.Bundle; |
| import org.osgi.service.condpermadmin.Condition; |
| import org.osgi.service.condpermadmin.ConditionInfo; |
| |
| /** |
| * Class representing an IMSI condition. Instances of this class contain a |
| * string value that is matched against the IMSI of the subscriber. |
| * |
| * @ThreadSafe |
| * @version $Revision: 6439 $ |
| */ |
| public class IMSICondition { |
| private static final String ORG_OSGI_UTIL_GSM_IMSI = "org.osgi.util.gsm.imsi"; |
| private static final String IMSI; |
| private static final int IMSI_LENGTH = 15; |
| |
| static { |
| IMSI = (String) AccessController.doPrivileged(new PrivilegedAction() { |
| public Object run() { |
| return System.getProperty(ORG_OSGI_UTIL_GSM_IMSI); |
| } |
| }); |
| } |
| |
| private IMSICondition() { |
| // prevent instances being constructed |
| } |
| |
| /** |
| * Creates an IMSI condition object. |
| * |
| * @param bundle This parameter is ignored, as the IMSI number is a property |
| * of the mobile subscriber and thus is the same for all bundles. |
| * @param conditionInfo Contains the IMSI value against which to match the |
| * subscriber's IMSI. Its {@link ConditionInfo#getArgs()} method |
| * should return a String array with one value: the IMSI string. The |
| * IMSI is 15 digits without hyphens. Limited pattern matching is |
| * allowed: the string is 0 to 14 digits, followed by an asterisk ( |
| * <code>*</code>). |
| * @return A Condition object that indicates whether the specified IMSI |
| * number matches that of the subscriber. If the number ends with an |
| * asterisk (<code>*</code>), then the beginning of the IMSI is |
| * compared to the pattern. |
| * @throws IllegalArgumentException If the IMSI is not a string of 15 |
| * digits, or 0 to 14 digits with an <code>*</code> at the end. |
| */ |
| public static Condition getCondition(Bundle bundle, |
| ConditionInfo conditionInfo) { |
| String imsi = conditionInfo.getArgs()[0]; |
| int length = imsi.length(); |
| if (length > IMSI_LENGTH) { |
| throw new IllegalArgumentException("IMSI too long: " + imsi); |
| } |
| if (imsi.endsWith("*")) { |
| length--; |
| imsi = imsi.substring(0, length); |
| } |
| else { |
| if (length < IMSI_LENGTH) { |
| throw new IllegalArgumentException("IMSI too short: " + imsi); |
| } |
| } |
| for (int i = 0; i < length; i++) { |
| char c = imsi.charAt(i); |
| if (('0' <= c) && (c <= '9')) { |
| continue; |
| } |
| throw new IllegalArgumentException("not a valid IMSI: " + imsi); |
| } |
| if (IMSI == null) { |
| System.err |
| .println("The OSGi implementation of org.osgi.util.gsm.IMSICondition needs the system property " |
| + ORG_OSGI_UTIL_GSM_IMSI + " set."); |
| return Condition.FALSE; |
| } |
| return IMSI.startsWith(imsi) ? Condition.TRUE : Condition.FALSE; |
| } |
| } |