From 535a04fa05f739ec16dd81666e3b0f82dfbd442d Mon Sep 17 00:00:00 2001 From: tknall Date: Wed, 9 Jan 2013 15:41:29 +0000 Subject: pdf-as-lib maven project files moved to pdf-as-lib git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/pdf-as/trunk@926 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c --- .../SignatureLayoutHandlerFactory.java | 147 +++++++++++++++++++++ 1 file changed, 147 insertions(+) create mode 100644 pdf-as-lib/src/main/java/at/knowcenter/wag/egov/egiz/sig/signaturelayout/SignatureLayoutHandlerFactory.java (limited to 'pdf-as-lib/src/main/java/at/knowcenter/wag/egov/egiz/sig/signaturelayout/SignatureLayoutHandlerFactory.java') diff --git a/pdf-as-lib/src/main/java/at/knowcenter/wag/egov/egiz/sig/signaturelayout/SignatureLayoutHandlerFactory.java b/pdf-as-lib/src/main/java/at/knowcenter/wag/egov/egiz/sig/signaturelayout/SignatureLayoutHandlerFactory.java new file mode 100644 index 0000000..07a7792 --- /dev/null +++ b/pdf-as-lib/src/main/java/at/knowcenter/wag/egov/egiz/sig/signaturelayout/SignatureLayoutHandlerFactory.java @@ -0,0 +1,147 @@ +/** + * Copyright 2006 by Know-Center, Graz, Austria + * PDF-AS has been contracted by the E-Government Innovation Center EGIZ, a + * joint initiative of the Federal Chancellery Austria and Graz University of + * Technology. + * + * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by + * the European Commission - subsequent versions of the EUPL (the "Licence"); + * You may not use this work except in compliance with the Licence. + * You may obtain a copy of the Licence at: + * http://www.osor.eu/eupl/ + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the Licence is distributed on an "AS IS" basis, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the Licence for the specific language governing permissions and + * limitations under the Licence. + * + * This product combines work with different licenses. See the "NOTICE" text + * file for details on the various modules and licenses. + * The "NOTICE" text file is part of the distribution. Any derivative works + * that you distribute must include a readable copy of the "NOTICE" text file. + */ +package at.knowcenter.wag.egov.egiz.sig.signaturelayout; + +import java.util.Collections; +import java.util.HashMap; +import java.util.Iterator; +import java.util.Map; +import java.util.Vector; +import java.util.regex.Pattern; + +import org.apache.commons.logging.Log; +import org.apache.commons.logging.LogFactory; + +import at.gv.egiz.pdfas.exceptions.ErrorCode; +import at.knowcenter.wag.egov.egiz.cfg.SettingsReader; +import at.knowcenter.wag.egov.egiz.exceptions.ConnectorException; +import at.knowcenter.wag.egov.egiz.exceptions.SettingNotFoundException; +import at.knowcenter.wag.egov.egiz.exceptions.SettingsException; + +/** + * Returns instances of signature layout handlers based on given bku + * identifiers. + * + * @author tknall + */ +public class SignatureLayoutHandlerFactory { + + /** + * Prefix of configuration keys defining bku identifiers for a signature layout. + */ + private final static String SIGNATURE_LAYOUT_CONFIG_KEY_PATTERN = "signaturelayout.pattern"; + + /** + * Prefix of configuration keys defining implementations of signature layout handlers. + * @see SignatureLayoutHandler + */ + private final static String SIGNATURE_LAYOUT_CONFIG_KEY_IMPL = "signaturelayout.implementation"; + + /** + * A map holding instantiated signature layout implementations (for performance reasons). + */ + private final static Map instances = Collections.synchronizedMap(new HashMap()); + + /** + * The log. + */ + private static Log log = LogFactory.getLog(SignatureLayoutHandlerFactory.class); + + /** + * Returns an instance of a signature layout handler based on the given bku identifier. + * @param bkuIdentifier The bku identifier (e.g. citizen-card-environment/1.2 MOCCA/1.1.1). + * @return An implementation of a signature layout handler. + * @throws ConnectorException Thrown in case of an error finding a match within the configuration with the given bku identifier. + * @throws SettingsException Thrown in case of an error within the configuration. + */ + public static SignatureLayoutHandler getSignatureLayoutHandlerInstance(String bkuIdentifier) throws ConnectorException, SettingsException { + if (bkuIdentifier == null) { + throw new SettingsException(ErrorCode.MISSING_HEADER_SERVER_USER_AGENT, "Unable to determine type of citizen card environment. Response header \"Server\" resp. \"user-agent\" is missing. Refer to security layer specification 1.2.2, section 3.3.2."); + } + SignatureLayoutHandler signatureLayoutHandler = (SignatureLayoutHandler) instances.get(bkuIdentifier); + + if (signatureLayoutHandler == null) { + SettingsReader sr = SettingsReader.getInstance(); + + Vector v = sr.getSettingKeys(SIGNATURE_LAYOUT_CONFIG_KEY_PATTERN); + String implValue = null; + + Iterator it = v.iterator(); + try { + while (it.hasNext()) { + String subKey = (String) it.next(); + String key = SIGNATURE_LAYOUT_CONFIG_KEY_PATTERN + "." + subKey; + String value = sr.getSetting(key); + Pattern p = Pattern.compile(value); + if (p.matcher(bkuIdentifier).matches()) { + String implKey = SIGNATURE_LAYOUT_CONFIG_KEY_IMPL + "." + subKey; + implValue = sr.getSetting(implKey); + } + } + } catch (SettingNotFoundException e) { + throw new SettingsException(ErrorCode.INVALID_SIGNATURE_LAYOUT_IMPL_CONFIGURED, e.getMessage()); + } + + if (implValue == null) { + throw new ConnectorException(ErrorCode.BKU_NOT_SUPPORTED, "Unsupported BKU: " + bkuIdentifier); + } + + log.debug("Trying to instantiate SignatureLayoutHandler \"" + implValue + "\"."); + + try { + Class clazz = Class.forName(implValue); + Object obj = clazz.newInstance(); + if (!(obj instanceof SignatureLayoutHandler)) { + throw new SettingsException(ErrorCode.INVALID_SIGNATURE_LAYOUT_IMPL_CONFIGURED, "Invalid signature layout implementation (\"" + implValue + "\") configured for bku identifier \"" + bkuIdentifier + "\"."); + } + signatureLayoutHandler = (SignatureLayoutHandler) obj; + } catch (InstantiationException e) { + throw new SettingsException(ErrorCode.INVALID_SIGNATURE_LAYOUT_IMPL_CONFIGURED, "Error instantiating signature layout implementation (\"" + implValue + "\") configured for bku identifier \"" + bkuIdentifier + "\"."); + } catch (IllegalAccessException e) { + throw new SettingsException(ErrorCode.INVALID_SIGNATURE_LAYOUT_IMPL_CONFIGURED, "Illegal access instantiating signature layout implementation (\"" + implValue + "\") configured for bku identifier \"" + bkuIdentifier + "\"."); + } catch (ClassNotFoundException e) { + throw new SettingsException(ErrorCode.INVALID_SIGNATURE_LAYOUT_IMPL_CONFIGURED, "Unable to find signature layout implementation (\"" + implValue + "\") configured for bku identifier \"" + bkuIdentifier + "\"."); + } + + log.debug("SignatureLayoutHandler successfully instantiated."); + instances.put(bkuIdentifier, signatureLayoutHandler); + } else { + log.trace("SignatureLayoutHandler has already been instantiated. Returning old instance."); + } + + return signatureLayoutHandler; + + } + + /** + * Verifies that the bku is supported trying to match the given bku identifier. + * @param bkuIdentifier The bku identifier (e.g. citizen-card-environment/1.2 MOCCA/1.1.1). + * @throws ConnectorException Thrown in case of an error (e.g. bku not supported). + * @throws SettingsException Thrown in case of an error within the configuration. + */ + public static void verifyBKUSupport(String bkuIdentifier) throws ConnectorException, SettingsException { + getSignatureLayoutHandlerInstance(bkuIdentifier); + } + +} -- cgit v1.2.3