From e0f2c64ad6360e2ecec983cb5e0a60f812672106 Mon Sep 17 00:00:00 2001 From: wbauer Date: Thu, 4 Sep 2008 14:56:54 +0000 Subject: finished access controller, accessed it from command invoker and configured everything within onlinebku git-svn-id: https://joinup.ec.europa.eu/svn/mocca/trunk@14 8a26b1a7-26f0-462f-b9ef-d0e30c41f5a4 --- .../gv/egiz/bku/binding/HTTPBindingProcessor.java | 1634 ++++++++++---------- 1 file changed, 816 insertions(+), 818 deletions(-) (limited to 'bkucommon/src/main/java/at/gv/egiz/bku/binding/HTTPBindingProcessor.java') diff --git a/bkucommon/src/main/java/at/gv/egiz/bku/binding/HTTPBindingProcessor.java b/bkucommon/src/main/java/at/gv/egiz/bku/binding/HTTPBindingProcessor.java index b79f7d55..19f22126 100644 --- a/bkucommon/src/main/java/at/gv/egiz/bku/binding/HTTPBindingProcessor.java +++ b/bkucommon/src/main/java/at/gv/egiz/bku/binding/HTTPBindingProcessor.java @@ -1,820 +1,818 @@ /* -* Copyright 2008 Federal Chancellery Austria and -* Graz University of Technology -* -* 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 at.gv.egiz.bku.binding; - -import java.io.IOException; -import java.io.InputStream; -import java.io.InputStreamReader; -import java.io.OutputStream; -import java.io.OutputStreamWriter; -import java.io.Reader; -import java.security.cert.X509Certificate; -import java.util.ArrayList; -import java.util.Arrays; -import java.util.Collection; -import java.util.Collections; -import java.util.HashMap; -import java.util.Iterator; -import java.util.List; -import java.util.Locale; -import java.util.Map; - -import javax.net.ssl.SSLHandshakeException; -import javax.xml.transform.Transformer; -import javax.xml.transform.TransformerException; -import javax.xml.transform.TransformerFactory; -import javax.xml.transform.URIResolver; -import javax.xml.transform.stream.StreamResult; -import javax.xml.transform.stream.StreamSource; - -import org.apache.commons.logging.Log; -import org.apache.commons.logging.LogFactory; - -import at.gv.egiz.bku.slcommands.SLCommand; -import at.gv.egiz.bku.slcommands.SLCommandContext; -import at.gv.egiz.bku.slcommands.SLCommandFactory; -import at.gv.egiz.bku.slcommands.SLCommandInvoker; -import at.gv.egiz.bku.slcommands.SLResult; -import at.gv.egiz.bku.slcommands.SLSourceContext; -import at.gv.egiz.bku.slcommands.SLTargetContext; -import at.gv.egiz.bku.slcommands.impl.ErrorResultImpl; -import at.gv.egiz.bku.slexceptions.SLBindingException; -import at.gv.egiz.bku.slexceptions.SLCanceledException; -import at.gv.egiz.bku.slexceptions.SLException; -import at.gv.egiz.bku.slexceptions.SLRuntimeException; -import at.gv.egiz.bku.utils.StreamUtil; -import at.gv.egiz.bku.utils.binding.Protocol; -import at.gv.egiz.bku.utils.urldereferencer.FormDataURLSupplier; -import at.gv.egiz.bku.utils.urldereferencer.SimpleFormDataContextImpl; -import at.gv.egiz.bku.utils.urldereferencer.StreamData; -import at.gv.egiz.bku.utils.urldereferencer.URIResolverAdapter; -import at.gv.egiz.bku.utils.urldereferencer.URLDereferencer; -import at.gv.egiz.bku.utils.urldereferencer.URLDereferencerContext; -import at.gv.egiz.stal.QuitRequest; -import at.gv.egiz.stal.STALRequest; - -/** - * Class performing the HTTP binding as defined by the CCE specification. - * Currently a huge monolithic class. - * @TODO refactor - */ -@SuppressWarnings("unchecked") -public class HTTPBindingProcessor extends AbstractBindingProcessor implements - FormDataURLSupplier { - - private static Log log = LogFactory.getLog(HTTPBindingProcessor.class); - - private static enum State { - INIT, PROCESS, DATAURL, TRANSFORM, FINISHED - }; - - public final static Collection XML_REQ_TRANSFER_ENCODING = Arrays - .asList(new String[] { "binary" }); - - /** - * Defines the maximum number of dataurl connects that are allowed within a - * single SL Request processing. - */ - protected static int MAX_DATAURL_HOPS = 10; - - protected static String XML_MIME_TYPE = "text/xml"; - protected static String BINARY_MIME_TYPE = "application/octet-stream"; - - /** - * If null everything is ok and the result is taken from the command invoker. - */ - protected SLException bindingProcessorError; - protected SLCommandInvoker commandInvoker; - protected DataUrlResponse dataUrlResponse; - protected Map headerMap = Collections.EMPTY_MAP; - protected SLCommand slCommand; - protected Map formParameterMap = new HashMap(); - protected SLSourceContext srcContex = new SLSourceContext(); - protected SLTargetContext targetContext = new SLTargetContext(); - protected Protocol protocol; - protected State currentState = State.INIT; - protected Transformer transformer = null; - protected String resultContentType = null; - protected SLResult slResult = null; - protected int responseCode = 200; - protected Map responseHeaders = Collections.EMPTY_MAP; - protected Locale locale = Locale.getDefault(); - - /** - * - * @param id - * may be null. In this case a new session id will be created. - * @param cmdInvoker - * must not be null; - */ - public HTTPBindingProcessor(String id, SLCommandInvoker cmdInvoker, - Protocol protocol) { - super(id); - if ((protocol != Protocol.HTTP) && (protocol != Protocol.HTTPS)) { - throw new SLRuntimeException("Protocol not supported: " + protocol); - } - if (cmdInvoker == null) { - throw new NullPointerException("Commandinvoker cannot be set to null"); - } - commandInvoker = cmdInvoker; - this.protocol = protocol; - srcContex.setSourceProtocol(protocol); - srcContex.setSourceIsDataURL(false); - } - - //---------------------------------------------------------------------------- - // ----------- BEGIN CONVENIENCE METHODS ----------- - - protected void sendSTALQuit() { - log.info("Sending QUIT command to STAL"); - List quit = new ArrayList(1); - quit.add(new QuitRequest()); - getSTAL().handleRequest(quit); - } - - protected String getFormParameterAsString(String formParameterName) { - FormParameter fp = formParameterMap.get(formParameterName); - return getFormParameterAsString(fp); - } - - protected String getFormParameterAsString(FormParameter fp) { - if (fp == null) { - return null; - } - try { - return StreamUtil.asString(fp.getFormParameterValue(), HttpUtil - .getCharset(fp.getFormParameterContentType(), true)); - } catch (IOException e) { - return null; - } - } - - protected String getDataUrl() { - return getFormParameterAsString(FixedFormParameters.DATAURL); - } - - protected String getStyleSheetUrl() { - return getFormParameterAsString(FixedFormParameters.STYLESHEETURL); - } - - protected List getFormParameters(String parameterNamePostfix) { - List resultList = new ArrayList(); - for (Iterator fpi = formParameterMap.keySet().iterator(); fpi - .hasNext();) { - String paramName = fpi.next(); - if (paramName.endsWith(parameterNamePostfix)) { - resultList.add(formParameterMap.get(paramName)); - } - } - return resultList; - } - - protected List getTransferHeaders() { - return getFormParameters("__"); - } - - protected List getTransferForms() { - List resultList = new ArrayList(); - for (Iterator fpi = formParameterMap.keySet().iterator(); fpi - .hasNext();) { - String paramName = fpi.next(); - if ((paramName.endsWith("_")) && (!paramName.endsWith("__"))) { - resultList.add(formParameterMap.get(paramName)); - } - } - return resultList; - } - - protected void closeDataUrlConnection() { - log.debug("Closing data url input stream"); - if (dataUrlResponse == null) { - return; - } - InputStream is = dataUrlResponse.getStream(); - if (is != null) { - try { - is.close(); - } catch (IOException e) { - log.info("Error closing input stream to dataurl server:" + e); - } - } - } - - //---------------------------------------------------------------------------- - // ----------- END CONVENIENCE METHODS ----------- - - //---------------------------------------------------------------------------- - // -- BEGIN Methods that handle the http binding activities as defined in the - // activity diagram -- - - protected void init() { - log.info("Starting Bindingprocessor in Thread: " - + Thread.currentThread().getId()); - if (bindingProcessorError != null) { - log.debug("Detected binding processor error, sending quit command"); - // sendSTALQuit(); - currentState = State.FINISHED; - } else if (slCommand == null) { - log.error("SLCommand not set (consumeRequest not called ??)"); - bindingProcessorError = new SLException(2000); - // sendSTALQuit(); - currentState = State.FINISHED; - } else { - currentState = State.PROCESS; - } - } - - protected void processRequest() { - log.debug("Entered State: " + State.PROCESS); - log.debug("Processing command: " + slCommand); - commandInvoker.setCommand(slCommand); - responseCode = 200; - responseHeaders = Collections.EMPTY_MAP; - try { - commandInvoker.invoke(srcContex); - } catch (SLCanceledException e) { - log.info("Caught exception: " + e); - bindingProcessorError = e; - currentState = State.TRANSFORM; - } - dataUrlResponse = null; - if (getDataUrl() != null) { - log.debug("Data Url set to: " + getDataUrl()); - currentState = State.DATAURL; - } else { - log.debug("No data url set"); - currentState = State.TRANSFORM; - } - } - - protected void handleDataUrl() { - log.debug("Entered State: " + State.DATAURL); - try { - DataUrl dataUrl = new DataUrl(getDataUrl()); - DataUrlConnection conn = dataUrl.openConnection(); - - // set transfer headers - for (FormParameter fp : getTransferHeaders()) { - String paramString = getFormParameterAsString(fp); - if (paramString == null) { - log.error("Got empty transfer header, ignoring this"); - } else { - String[] keyVal = paramString.split(":", 2); - String key = keyVal[0]; - String val = null; - if (keyVal.length == 2) { - val = keyVal[1]; - } - val = val.trim(); - log.debug("Setting header " + key + " to value " + val); - conn.setHTTPHeader(key, val); - } - } - - // set transfer form parameters - for (FormParameter fp : getTransferForms()) { - String contentTransferEncoding = null; - String contentType = fp.getFormParameterContentType(); - String charSet = HttpUtil.getCharset(contentType, false); - if (charSet != null) { - contentType = contentType.substring(0, contentType - .lastIndexOf(HttpUtil.SEPERATOR[0])); - } - for (Iterator header = fp.getHeaderNames(); header.hasNext();) { - if (HttpUtil.CONTENT_TRANSFER_ENCODING - .equalsIgnoreCase(header.next())) { - contentTransferEncoding = getFormParameterAsString(fp); - } - } - log.debug("Setting form: " + fp.getFormParameterName() - + " contentType: " + contentType + " charset: " + charSet - + " contentTransferEncoding: " + contentTransferEncoding); - conn.setHTTPFormParameter(fp.getFormParameterName(), fp - .getFormParameterValue(), contentType, charSet, - contentTransferEncoding); - } - - // connect - conn.connect(); - // fetch and set SL result - targetContext.setTargetIsDataURL(true); - targetContext.setTargetCertificate(conn.getServerCertificate()); - targetContext.setTargetProtocol(conn.getProtocol()); - SLResult result = commandInvoker.getResult(targetContext); - - // transfer result - conn.transmit(result); - - // process Dataurl response - dataUrlResponse = conn.getResponse(); - log.debug("Received data url response code: " - + dataUrlResponse.getResponseCode()); - protocol = Protocol.fromString(conn.getProtocol()); - - switch (dataUrlResponse.getResponseCode()) { - case 200: - String contentType = dataUrlResponse.getContentType(); - log.debug("Got dataurl response content type: " + contentType); - if (contentType != null) { - if ((contentType.startsWith(HttpUtil.APPLICATION_URL_ENCODED)) - || (contentType.startsWith(HttpUtil.MULTIPART_FOTMDATA))) { - log.debug("Detected SL Request in dataurl response"); - // process headers and request - setHTTPHeaders(dataUrlResponse.getResponseHeaders()); - consumeRequestStream(dataUrlResponse.getStream()); - closeDataUrlConnection(); - srcContex.setSourceCertificate(conn.getServerCertificate()); - srcContex.setSourceIsDataURL(true); - srcContex - .setSourceProtocol(Protocol.fromString(conn.getProtocol())); - currentState = State.PROCESS; - } else if (((contentType.startsWith(HttpUtil.TXT_HTML)) - || (contentType.startsWith(HttpUtil.TXT_PLAIN)) || (contentType - .startsWith(HttpUtil.TXT_XML))) - && (dataUrlResponse.isHttpResponseXMLOK())) { - log.info("Dataurl response matches with content type: " - + contentType); - currentState = State.TRANSFORM; - - } else if ((contentType.startsWith(HttpUtil.TXT_XML)) - && (!dataUrlResponse.isHttpResponseXMLOK())) { - log - .debug("Detected text/xml dataurl response with content != "); - headerMap.put(HttpUtil.HTTP_HEADER_CONTENT_TYPE, contentType); - assignXMLRequest(dataUrlResponse.getStream(), HttpUtil.getCharset( - contentType, true)); - closeDataUrlConnection(); - srcContex.setSourceCertificate(conn.getServerCertificate()); - srcContex.setSourceIsDataURL(true); - srcContex - .setSourceProtocol(Protocol.fromString(conn.getProtocol())); - currentState = State.PROCESS; - // just to be complete, actually not used - srcContex.setSourceHTTPReferer(dataUrlResponse.getResponseHeaders() - .get(HttpUtil.HTTP_HEADER_REFERER)); - } else { - resultContentType = contentType; - responseHeaders = dataUrlResponse.getResponseHeaders(); - responseCode = dataUrlResponse.getResponseCode(); - currentState = State.FINISHED; - } - } else { - log.debug("Content type not set in dataurl response"); - closeDataUrlConnection(); - throw new SLBindingException(2007); - } - - break; - case 307: - contentType = dataUrlResponse.getContentType(); - if ((contentType != null) && (contentType.startsWith(HttpUtil.TXT_XML))) { - log.debug("Received dataurl response code 307 with XML content"); - String location = dataUrlResponse.getResponseHeaders().get( - HttpUtil.HTTP_HEADER_LOCATION); - if (location == null) { - log - .error("Did not get a location header for a 307 data url response"); - throw new SLBindingException(2003); - } - // consumeRequestStream(dataUrlResponse.getStream()); - FormParameterStore fp = new FormParameterStore(); - fp.init(location.getBytes(HttpUtil.DEFAULT_CHARSET), - FixedFormParameters.DATAURL, null, null); - formParameterMap.put(FixedFormParameters.DATAURL, fp); - headerMap.put(HttpUtil.HTTP_HEADER_CONTENT_TYPE, contentType); - assignXMLRequest(dataUrlResponse.getStream(), HttpUtil.getCharset( - dataUrlResponse.getContentType(), true)); - closeDataUrlConnection(); - srcContex.setSourceCertificate(conn.getServerCertificate()); - srcContex.setSourceIsDataURL(true); - srcContex.setSourceProtocol(Protocol.fromString(conn.getProtocol())); - currentState = State.PROCESS; - // just to be complete, actually not used - srcContex.setSourceHTTPReferer(dataUrlResponse.getResponseHeaders() - .get(HttpUtil.HTTP_HEADER_REFERER)); - - } else { - log.debug("Received dataurl response code 307 non XML content: " - + dataUrlResponse.getContentType()); - resultContentType = dataUrlResponse.getContentType(); - currentState = State.FINISHED; - } - responseHeaders = dataUrlResponse.getResponseHeaders(); - responseCode = dataUrlResponse.getResponseCode(); - break; - - case 301: - case 302: - case 303: - responseHeaders = dataUrlResponse.getResponseHeaders(); - responseCode = dataUrlResponse.getResponseCode(); - resultContentType = dataUrlResponse.getContentType(); - currentState = State.FINISHED; - break; - - default: - // issue error - log.info("Unexpected response code from dataurl server: " - + dataUrlResponse.getResponseCode()); - throw new SLBindingException(2007); - } - - } catch (SLException slx) { - bindingProcessorError = slx; - log.error("Error during dataurl communication"); - resultContentType = HttpUtil.TXT_XML; - currentState = State.TRANSFORM; - } catch (SSLHandshakeException hx) { - bindingProcessorError = new SLException(2010); - log.info("Error during dataurl communication", hx); - resultContentType = HttpUtil.TXT_XML; - currentState = State.TRANSFORM; - } catch (IOException e) { - bindingProcessorError = new SLBindingException(2001); - log.error("Error while data url handling", e); - resultContentType = HttpUtil.TXT_XML; - currentState = State.TRANSFORM; - return; - } - } - - protected void transformResult() { - log.debug("Entered State: " + State.TRANSFORM); - if (bindingProcessorError != null) { - resultContentType = HttpUtil.TXT_XML; - } else if (dataUrlResponse != null) { - resultContentType = dataUrlResponse.getContentType(); - } else { - targetContext.setTargetIsDataURL(false); - targetContext.setTargetProtocol(protocol.toString()); - try { - slResult = commandInvoker.getResult(targetContext); - resultContentType = slResult.getMimeType(); - log - .debug("Successfully got SLResult from commandinvoker, setting mimetype to: " - + resultContentType); - } catch (SLCanceledException e) { - log.info("Cannot get result from invoker:", e); - bindingProcessorError = new SLException(6002); - resultContentType = HttpUtil.TXT_XML; - } - } - transformer = getTransformer(getStyleSheetUrl()); - if (transformer != null) { - log.debug("Output transformation required"); - resultContentType = transformer.getOutputProperty("media-type"); - log.debug("Got media type from stylesheet: " + resultContentType); - if (resultContentType == null) { - log.debug("Setting to default text/xml result conent type"); - resultContentType = "text/xml"; - } - log.debug("Deferring sytylesheet processing"); - } - currentState = State.FINISHED; - } - - protected void finished() { - log.debug("Entered State: " + State.FINISHED); - if (bindingProcessorError != null) { - log.debug("Binding processor error, sending quit command"); - resultContentType = HttpUtil.TXT_XML; - } - sendSTALQuit(); - log.info("Terminating Bindingprocessor; Thread: " - + Thread.currentThread().getId()); - } - - // -- END Methods that handle the http binding activities as defined in the - // activity diagram -- - //---------------------------------------------------------------------------- - - /** - * Sets the headers of the SL Request. IMPORTANT: make sure to set all headers - * before invoking {@link #consumeRequestStream(InputStream)} - * - * @param aHeaderMap - * if null all header will be cleared. - */ - public void setHTTPHeaders(Map aHeaderMap) { - headerMap = new HashMap(); - // ensure lowercase keys - if (aHeaderMap != null) { - for (String s : aHeaderMap.keySet()) { - if (s != null) { - headerMap.put(s.toLowerCase(), aHeaderMap.get(s)); - if (s.equalsIgnoreCase(HttpUtil.HTTP_HEADER_REFERER)) { - String referer = aHeaderMap.get(s); - log.debug("Got referer header: " + referer); - srcContex.setSourceHTTPReferer(referer); - } - } - } - } - } - - public void setSourceCertificate(X509Certificate aCert) { - srcContex.setSourceCertificate(aCert); - } - - /** - * The HTTPBindingProcessor does not handle redirect URLs. It only provides - * the parameter. - * - * @return null if redirect url is not set. - */ - public String getRedirectURL() { - return getFormParameterAsString(FixedFormParameters.REDIRECTURL); - } - - public String getFormDataContentType(String aParameterName) { - FormParameter fp = formParameterMap.get(aParameterName); - if (fp != null) { - return fp.getFormParameterContentType(); - } - return null; - } - - public InputStream getFormData(String aParameterName) { - FormParameter fp = formParameterMap.get(aParameterName); - if (fp != null) { - return fp.getFormParameterValue(); - } - return null; - } - - protected void assignXMLRequest(InputStream is, String charset) - throws IOException, SLException { - Reader r = new InputStreamReader(is, charset); - StreamSource source = new StreamSource(r); - SLCommandContext commandCtx = new SLCommandContext(); - commandCtx.setSTAL(getSTAL()); - commandCtx.setURLDereferencerContext(new SimpleFormDataContextImpl(this)); - slCommand = SLCommandFactory.getInstance().createSLCommand(source, - commandCtx); - log.debug("Created new command: " + slCommand); - } - - @Override - public void run() { - boolean done = false; - int hopcounter = 0; - if (bindingProcessorError != null) { - currentState = State.FINISHED; - } - try { - while (!done) { - try { - switch (currentState) { - case INIT: - init(); - break; - case PROCESS: - processRequest(); - break; - case DATAURL: - handleDataUrl(); - if (++hopcounter > MAX_DATAURL_HOPS) { - log.error("Maximum number of dataurl hops reached"); - bindingProcessorError = new SLBindingException(2000); - currentState = State.FINISHED; - } - break; - case TRANSFORM: - transformResult(); - break; - case FINISHED: - done = true; - finished(); - break; - } - } catch (RuntimeException rte) { - throw rte; - } catch (Exception t) { - log.error("Caught unexpected exception", t); - responseCode = 200; - resultContentType = HttpUtil.TXT_XML; - responseHeaders = Collections.EMPTY_MAP; - bindingProcessorError = new SLException(2000); - currentState = State.FINISHED; - } - } - } catch (Throwable t) { - log.error("Caught unexpected exception", t); - responseCode = 200; - resultContentType = HttpUtil.TXT_XML; - responseHeaders = Collections.EMPTY_MAP; - bindingProcessorError = new SLException(2000); - currentState = State.FINISHED; - } - log.debug("Terminated http binding processor"); - } - - @Override - public void consumeRequestStream(InputStream is) { - try { - log.debug("Start consuming request stream"); - formParameterMap.clear(); - String cl = headerMap - .get(HttpUtil.HTTP_HEADER_CONTENT_TYPE.toLowerCase()); - if (cl == null) { - log.info("No content type set in http header"); - throw new SLBindingException(2006); - } - InputDecoder id = InputDecoderFactory.getDecoder(cl, is); - id.setContentType(cl); - if (id == null) { - log.error("Cannot get inputdecoder for is"); - throw new SLException(2006); - } - for (Iterator fpi = id.getFormParameterIterator(); fpi - .hasNext();) { - FormParameter fp = fpi.next(); - log.debug("Got request parameter with name: " - + fp.getFormParameterName()); - if (fp.getFormParameterName().equals(FixedFormParameters.XMLREQUEST)) { - log.debug("Creating XML Request"); - for (Iterator headerIterator = fp.getHeaderNames(); headerIterator - .hasNext();) { - String headerName = headerIterator.next(); - if (HttpUtil.CONTENT_TRANSFER_ENCODING.equalsIgnoreCase(headerName)) { - String transferEncoding = fp.getHeaderValue(headerName); - log.debug("Got transfer encoding for xmlrequest: " - + transferEncoding); - if (XML_REQ_TRANSFER_ENCODING.contains(transferEncoding)) { - log.debug("Supported transfer encoding: " + transferEncoding); - } else { - log - .error("Transferencoding not supported: " - + transferEncoding); - throw new SLBindingException(2005); - } - } - } - String charset = HttpUtil.getCharset(cl, true); - assignXMLRequest(fp.getFormParameterValue(), charset); - } else { - FormParameterStore fps = new FormParameterStore(); - fps.init(fp); - if (!fps.isEmpty()) { - log.debug("Setting from parameter: " + fps.getFormParameterName()); - formParameterMap.put(fps.getFormParameterName(), fps); - } - } - } - if (slCommand == null) { - throw new SLBindingException(2004); - } - if (is.read() != -1) { - log.error("Request input stream not completely read"); - // consume rest of stream, should never occur - throw new SLRuntimeException( - "request input stream not consumed till end"); - } - } catch (SLException slx) { - log.info("Error while consuming input stream " + slx); - bindingProcessorError = slx; - } catch (Throwable t) { - log.info("Error while consuming input stream " + t, t); - bindingProcessorError = new SLException(2000); - } finally { - try { - while (is.read() != -1) - ; - } catch (IOException e) { - log.error(e); - } - } - } - - @Override - public String getResultContentType() { - return resultContentType; - } - - protected Transformer getTransformer(String styleSheetURL) { - if (styleSheetURL == null) { - log.debug("Stylesheet URL not set"); - return null; - } - try { - URLDereferencerContext urlCtx = new SimpleFormDataContextImpl(this); - URIResolver resolver = new URIResolverAdapter(URLDereferencer - .getInstance(), urlCtx); - TransformerFactory factory = TransformerFactory.newInstance(); - StreamData sd = URLDereferencer.getInstance().dereference(styleSheetURL, - urlCtx); - Transformer t = factory.newTransformer(new StreamSource(sd.getStream())); - t.setURIResolver(resolver); - return t; - } catch (Exception ex) { - log.info("Cannot instantiate transformer", ex); - bindingProcessorError = new SLException(2002); - return null; - } - } - - protected void handleBindingProcessorError(OutputStream os, String encoding, - Transformer transformer) throws IOException { - log.debug("Writing error as result"); - ErrorResultImpl error = new ErrorResultImpl(bindingProcessorError); - try { - error.writeTo(new StreamResult(new OutputStreamWriter(os, encoding)), - transformer); - } catch (TransformerException e) { - log.fatal("Cannot write error result to stream", e); - } - } - - @Override - public void writeResultTo(OutputStream os, String encoding) - throws IOException { - if (encoding == null) { - encoding = HttpUtil.DEFAULT_CHARSET; - } - if (bindingProcessorError != null) { - log.debug("Detected error in binding processor, writing error as result"); - handleBindingProcessorError(os, encoding, transformer); - return; - } else if (dataUrlResponse != null) { - log.debug("Writing data url response as result"); - String charEnc = HttpUtil.getCharset(dataUrlResponse.getContentType(), - true); - InputStreamReader isr = new InputStreamReader( - dataUrlResponse.getStream(), charEnc); - OutputStreamWriter osw = new OutputStreamWriter(os, encoding); - if (transformer == null) { - StreamUtil.copyStream(isr, osw); - } else { - try { - transformer.transform(new StreamSource(isr), new StreamResult(osw)); - } catch (TransformerException e) { - log.fatal("Exception occured during result transformation", e); - // bindingProcessorError = new SLException(2008); - // handleBindingProcessorError(os, encoding, null); - return; - } - } - osw.flush(); - isr.close(); - } else if (slResult == null) { - // result not yet assigned -> must be a cancel - bindingProcessorError = new SLException(6001); - handleBindingProcessorError(os, encoding, transformer); - return; - } else { - log.debug("Getting result from invoker"); - OutputStreamWriter osw = new OutputStreamWriter(os, encoding); - try { - slResult.writeTo(new StreamResult(osw), transformer); - } catch (TransformerException e) { - log.fatal("Cannot write result to stream", e); - // bindingProcessorError = new SLException(2008); - // handleBindingProcessorError(os, encoding, transformer); - } - osw.flush(); - } - } - - /** - * The response code from the dataurl server or 200 if no dataurl server - * created the result - * - * @return - */ - public int getResponseCode() { - return responseCode; - } - - /** - * All headers from the data url server in case of a direct forward from the - * dataurl server. - * - * @return - */ - public Map getResponseHeaders() { - return responseHeaders; - } - - @Override - public void setLocale(Locale locale) { - if (locale == null) { - throw new NullPointerException("Locale must not be set to null"); - } - this.locale = locale; - } - + * Copyright 2008 Federal Chancellery Austria and + * Graz University of Technology + * + * 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 at.gv.egiz.bku.binding; + +import java.io.IOException; +import java.io.InputStream; +import java.io.InputStreamReader; +import java.io.OutputStream; +import java.io.OutputStreamWriter; +import java.io.Reader; +import java.net.URL; +import java.security.cert.X509Certificate; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collection; +import java.util.Collections; +import java.util.HashMap; +import java.util.Iterator; +import java.util.List; +import java.util.Locale; +import java.util.Map; + +import javax.net.ssl.SSLHandshakeException; +import javax.xml.transform.Transformer; +import javax.xml.transform.TransformerException; +import javax.xml.transform.TransformerFactory; +import javax.xml.transform.URIResolver; +import javax.xml.transform.stream.StreamResult; +import javax.xml.transform.stream.StreamSource; + +import org.apache.commons.logging.Log; +import org.apache.commons.logging.LogFactory; + +import at.gv.egiz.bku.slcommands.SLCommand; +import at.gv.egiz.bku.slcommands.SLCommandContext; +import at.gv.egiz.bku.slcommands.SLCommandFactory; +import at.gv.egiz.bku.slcommands.SLCommandInvoker; +import at.gv.egiz.bku.slcommands.SLResult; +import at.gv.egiz.bku.slcommands.SLSourceContext; +import at.gv.egiz.bku.slcommands.SLTargetContext; +import at.gv.egiz.bku.slcommands.impl.ErrorResultImpl; +import at.gv.egiz.bku.slexceptions.SLBindingException; +import at.gv.egiz.bku.slexceptions.SLException; +import at.gv.egiz.bku.slexceptions.SLRuntimeException; +import at.gv.egiz.bku.utils.StreamUtil; +import at.gv.egiz.bku.utils.binding.Protocol; +import at.gv.egiz.bku.utils.urldereferencer.FormDataURLSupplier; +import at.gv.egiz.bku.utils.urldereferencer.SimpleFormDataContextImpl; +import at.gv.egiz.bku.utils.urldereferencer.StreamData; +import at.gv.egiz.bku.utils.urldereferencer.URIResolverAdapter; +import at.gv.egiz.bku.utils.urldereferencer.URLDereferencer; +import at.gv.egiz.bku.utils.urldereferencer.URLDereferencerContext; +import at.gv.egiz.stal.QuitRequest; +import at.gv.egiz.stal.STALRequest; + +/** + * Class performing the HTTP binding as defined by the CCE specification. + * Currently a huge monolithic class. + * + * @TODO refactor + */ +@SuppressWarnings("unchecked") +public class HTTPBindingProcessor extends AbstractBindingProcessor implements + FormDataURLSupplier { + + private static Log log = LogFactory.getLog(HTTPBindingProcessor.class); + + private static enum State { + INIT, PROCESS, DATAURL, TRANSFORM, FINISHED + }; + + public final static Collection XML_REQ_TRANSFER_ENCODING = Arrays + .asList(new String[] { "binary" }); + + /** + * Defines the maximum number of dataurl connects that are allowed within a + * single SL Request processing. + */ + protected static int MAX_DATAURL_HOPS = 10; + + protected static String XML_MIME_TYPE = "text/xml"; + protected static String BINARY_MIME_TYPE = "application/octet-stream"; + + /** + * If null everything is ok and the result is taken from the command invoker. + */ + protected SLException bindingProcessorError; + protected SLCommandInvoker commandInvoker; + protected DataUrlResponse dataUrlResponse; + protected Map headerMap = Collections.EMPTY_MAP; + protected SLCommand slCommand; + protected Map formParameterMap = new HashMap(); + protected SLSourceContext srcContex = new SLSourceContext(); + protected SLTargetContext targetContext = new SLTargetContext(); + protected URL srcUrl; + protected State currentState = State.INIT; + protected Transformer transformer = null; + protected String resultContentType = null; + protected SLResult slResult = null; + protected int responseCode = 200; + protected Map responseHeaders = Collections.EMPTY_MAP; + protected Locale locale = Locale.getDefault(); + + /** + * + * @param id + * may be null. In this case a new session id will be created. + * @param cmdInvoker + * must not be null; + */ + public HTTPBindingProcessor(String id, SLCommandInvoker cmdInvoker, URL source) { + super(id); + this.srcUrl = source; + Protocol protocol = Protocol.fromString(source.getProtocol()); + if ((protocol != Protocol.HTTP) && (protocol != Protocol.HTTPS)) { + throw new SLRuntimeException("Protocol not supported: " + protocol); + } + if (cmdInvoker == null) { + throw new NullPointerException("Commandinvoker cannot be set to null"); + } + commandInvoker = cmdInvoker; + srcContex.setSourceUrl(source); + srcContex.setSourceIsDataURL(false); + } + + //---------------------------------------------------------------------------- + // ----------- BEGIN CONVENIENCE METHODS ----------- + + protected void sendSTALQuit() { + log.info("Sending QUIT command to STAL"); + List quit = new ArrayList(1); + quit.add(new QuitRequest()); + getSTAL().handleRequest(quit); + } + + protected String getFormParameterAsString(String formParameterName) { + FormParameter fp = formParameterMap.get(formParameterName); + return getFormParameterAsString(fp); + } + + protected String getFormParameterAsString(FormParameter fp) { + if (fp == null) { + return null; + } + try { + return StreamUtil.asString(fp.getFormParameterValue(), HttpUtil + .getCharset(fp.getFormParameterContentType(), true)); + } catch (IOException e) { + return null; + } + } + + protected String getDataUrl() { + return getFormParameterAsString(FixedFormParameters.DATAURL); + } + + protected String getStyleSheetUrl() { + return getFormParameterAsString(FixedFormParameters.STYLESHEETURL); + } + + protected List getFormParameters(String parameterNamePostfix) { + List resultList = new ArrayList(); + for (Iterator fpi = formParameterMap.keySet().iterator(); fpi + .hasNext();) { + String paramName = fpi.next(); + if (paramName.endsWith(parameterNamePostfix)) { + resultList.add(formParameterMap.get(paramName)); + } + } + return resultList; + } + + protected List getTransferHeaders() { + return getFormParameters("__"); + } + + protected List getTransferForms() { + List resultList = new ArrayList(); + for (Iterator fpi = formParameterMap.keySet().iterator(); fpi + .hasNext();) { + String paramName = fpi.next(); + if ((paramName.endsWith("_")) && (!paramName.endsWith("__"))) { + resultList.add(formParameterMap.get(paramName)); + } + } + return resultList; + } + + protected void closeDataUrlConnection() { + log.debug("Closing data url input stream"); + if (dataUrlResponse == null) { + return; + } + InputStream is = dataUrlResponse.getStream(); + if (is != null) { + try { + is.close(); + } catch (IOException e) { + log.info("Error closing input stream to dataurl server:" + e); + } + } + } + + //---------------------------------------------------------------------------- + // ----------- END CONVENIENCE METHODS ----------- + + //---------------------------------------------------------------------------- + // -- BEGIN Methods that handle the http binding activities as defined in the + // activity diagram -- + + protected void init() { + log.info("Starting Bindingprocessor in Thread: " + + Thread.currentThread().getId()); + if (bindingProcessorError != null) { + log.debug("Detected binding processor error, sending quit command"); + // sendSTALQuit(); + currentState = State.FINISHED; + } else if (slCommand == null) { + log.error("SLCommand not set (consumeRequest not called ??)"); + bindingProcessorError = new SLException(2000); + // sendSTALQuit(); + currentState = State.FINISHED; + } else { + currentState = State.PROCESS; + } + } + + protected void processRequest() { + log.debug("Entered State: " + State.PROCESS); + log.debug("Processing command: " + slCommand); + commandInvoker.setCommand(slCommand); + responseCode = 200; + responseHeaders = Collections.EMPTY_MAP; + try { + commandInvoker.invoke(srcContex); + } catch (SLException e) { + log.info("Caught exception: " + e); + bindingProcessorError = e; + currentState = State.TRANSFORM; + } + dataUrlResponse = null; + if (getDataUrl() != null) { + log.debug("Data Url set to: " + getDataUrl()); + currentState = State.DATAURL; + } else { + log.debug("No data url set"); + currentState = State.TRANSFORM; + } + } + + protected void handleDataUrl() { + log.debug("Entered State: " + State.DATAURL); + try { + DataUrl dataUrl = new DataUrl(getDataUrl()); + DataUrlConnection conn = dataUrl.openConnection(); + + // set transfer headers + for (FormParameter fp : getTransferHeaders()) { + String paramString = getFormParameterAsString(fp); + if (paramString == null) { + log.error("Got empty transfer header, ignoring this"); + } else { + String[] keyVal = paramString.split(":", 2); + String key = keyVal[0]; + String val = null; + if (keyVal.length == 2) { + val = keyVal[1]; + } + val = val.trim(); + log.debug("Setting header " + key + " to value " + val); + conn.setHTTPHeader(key, val); + } + } + + // set transfer form parameters + for (FormParameter fp : getTransferForms()) { + String contentTransferEncoding = null; + String contentType = fp.getFormParameterContentType(); + String charSet = HttpUtil.getCharset(contentType, false); + if (charSet != null) { + contentType = contentType.substring(0, contentType + .lastIndexOf(HttpUtil.SEPERATOR[0])); + } + for (Iterator header = fp.getHeaderNames(); header.hasNext();) { + if (HttpUtil.CONTENT_TRANSFER_ENCODING + .equalsIgnoreCase(header.next())) { + contentTransferEncoding = getFormParameterAsString(fp); + } + } + log.debug("Setting form: " + fp.getFormParameterName() + + " contentType: " + contentType + " charset: " + charSet + + " contentTransferEncoding: " + contentTransferEncoding); + conn.setHTTPFormParameter(fp.getFormParameterName(), fp + .getFormParameterValue(), contentType, charSet, + contentTransferEncoding); + } + + // connect + conn.connect(); + // fetch and set SL result + targetContext.setTargetIsDataURL(true); + targetContext.setTargetCertificate(conn.getServerCertificate()); + targetContext.setTargetUrl(conn.getUrl()); + SLResult result = commandInvoker.getResult(targetContext); + + // transfer result + conn.transmit(result); + + // process Dataurl response + dataUrlResponse = conn.getResponse(); + log.debug("Received data url response code: " + + dataUrlResponse.getResponseCode()); + + switch (dataUrlResponse.getResponseCode()) { + case 200: + String contentType = dataUrlResponse.getContentType(); + log.debug("Got dataurl response content type: " + contentType); + if (contentType != null) { + if ((contentType.startsWith(HttpUtil.APPLICATION_URL_ENCODED)) + || (contentType.startsWith(HttpUtil.MULTIPART_FOTMDATA))) { + log.debug("Detected SL Request in dataurl response"); + // process headers and request + setHTTPHeaders(dataUrlResponse.getResponseHeaders()); + consumeRequestStream(dataUrlResponse.getStream()); + closeDataUrlConnection(); + srcContex.setSourceCertificate(conn.getServerCertificate()); + srcContex.setSourceIsDataURL(true); + srcContex.setSourceUrl(conn.getUrl()); + currentState = State.PROCESS; + } else if (((contentType.startsWith(HttpUtil.TXT_HTML)) + || (contentType.startsWith(HttpUtil.TXT_PLAIN)) || (contentType + .startsWith(HttpUtil.TXT_XML))) + && (dataUrlResponse.isHttpResponseXMLOK())) { + log.info("Dataurl response matches with content type: " + + contentType); + currentState = State.TRANSFORM; + + } else if ((contentType.startsWith(HttpUtil.TXT_XML)) + && (!dataUrlResponse.isHttpResponseXMLOK())) { + log + .debug("Detected text/xml dataurl response with content != "); + headerMap.put(HttpUtil.HTTP_HEADER_CONTENT_TYPE, contentType); + assignXMLRequest(dataUrlResponse.getStream(), HttpUtil.getCharset( + contentType, true)); + closeDataUrlConnection(); + srcContex.setSourceCertificate(conn.getServerCertificate()); + srcContex.setSourceIsDataURL(true); + srcContex.setSourceUrl(conn.getUrl()); + currentState = State.PROCESS; + // just to be complete, actually not used + srcContex.setSourceHTTPReferer(dataUrlResponse.getResponseHeaders() + .get(HttpUtil.HTTP_HEADER_REFERER)); + } else { + resultContentType = contentType; + responseHeaders = dataUrlResponse.getResponseHeaders(); + responseCode = dataUrlResponse.getResponseCode(); + currentState = State.FINISHED; + } + } else { + log.debug("Content type not set in dataurl response"); + closeDataUrlConnection(); + throw new SLBindingException(2007); + } + + break; + case 307: + contentType = dataUrlResponse.getContentType(); + if ((contentType != null) && (contentType.startsWith(HttpUtil.TXT_XML))) { + log.debug("Received dataurl response code 307 with XML content"); + String location = dataUrlResponse.getResponseHeaders().get( + HttpUtil.HTTP_HEADER_LOCATION); + if (location == null) { + log + .error("Did not get a location header for a 307 data url response"); + throw new SLBindingException(2003); + } + // consumeRequestStream(dataUrlResponse.getStream()); + FormParameterStore fp = new FormParameterStore(); + fp.init(location.getBytes(HttpUtil.DEFAULT_CHARSET), + FixedFormParameters.DATAURL, null, null); + formParameterMap.put(FixedFormParameters.DATAURL, fp); + headerMap.put(HttpUtil.HTTP_HEADER_CONTENT_TYPE, contentType); + assignXMLRequest(dataUrlResponse.getStream(), HttpUtil.getCharset( + dataUrlResponse.getContentType(), true)); + closeDataUrlConnection(); + srcContex.setSourceCertificate(conn.getServerCertificate()); + srcContex.setSourceIsDataURL(true); + srcContex.setSourceUrl(conn.getUrl()); + currentState = State.PROCESS; + // just to be complete, actually not used + srcContex.setSourceHTTPReferer(dataUrlResponse.getResponseHeaders() + .get(HttpUtil.HTTP_HEADER_REFERER)); + + } else { + log.debug("Received dataurl response code 307 non XML content: " + + dataUrlResponse.getContentType()); + resultContentType = dataUrlResponse.getContentType(); + currentState = State.FINISHED; + } + responseHeaders = dataUrlResponse.getResponseHeaders(); + responseCode = dataUrlResponse.getResponseCode(); + break; + + case 301: + case 302: + case 303: + responseHeaders = dataUrlResponse.getResponseHeaders(); + responseCode = dataUrlResponse.getResponseCode(); + resultContentType = dataUrlResponse.getContentType(); + currentState = State.FINISHED; + break; + + default: + // issue error + log.info("Unexpected response code from dataurl server: " + + dataUrlResponse.getResponseCode()); + throw new SLBindingException(2007); + } + + } catch (SLException slx) { + bindingProcessorError = slx; + log.error("Error during dataurl communication"); + resultContentType = HttpUtil.TXT_XML; + currentState = State.TRANSFORM; + } catch (SSLHandshakeException hx) { + bindingProcessorError = new SLException(2010); + log.info("Error during dataurl communication", hx); + resultContentType = HttpUtil.TXT_XML; + currentState = State.TRANSFORM; + } catch (IOException e) { + bindingProcessorError = new SLBindingException(2001); + log.error("Error while data url handling", e); + resultContentType = HttpUtil.TXT_XML; + currentState = State.TRANSFORM; + return; + } + } + + protected void transformResult() { + log.debug("Entered State: " + State.TRANSFORM); + if (bindingProcessorError != null) { + resultContentType = HttpUtil.TXT_XML; + } else if (dataUrlResponse != null) { + resultContentType = dataUrlResponse.getContentType(); + } else { + targetContext.setTargetIsDataURL(false); + targetContext.setTargetUrl(srcUrl); + try { + slResult = commandInvoker.getResult(targetContext); + resultContentType = slResult.getMimeType(); + log + .debug("Successfully got SLResult from commandinvoker, setting mimetype to: " + + resultContentType); + } catch (SLException e) { + log.info("Cannot get result from invoker:", e); + bindingProcessorError = new SLException(6002); + resultContentType = HttpUtil.TXT_XML; + } + } + transformer = getTransformer(getStyleSheetUrl()); + if (transformer != null) { + log.debug("Output transformation required"); + resultContentType = transformer.getOutputProperty("media-type"); + log.debug("Got media type from stylesheet: " + resultContentType); + if (resultContentType == null) { + log.debug("Setting to default text/xml result conent type"); + resultContentType = "text/xml"; + } + log.debug("Deferring sytylesheet processing"); + } + currentState = State.FINISHED; + } + + protected void finished() { + log.debug("Entered State: " + State.FINISHED); + if (bindingProcessorError != null) { + log.debug("Binding processor error, sending quit command"); + resultContentType = HttpUtil.TXT_XML; + } + sendSTALQuit(); + log.info("Terminating Bindingprocessor; Thread: " + + Thread.currentThread().getId()); + } + + // -- END Methods that handle the http binding activities as defined in the + // activity diagram -- + //---------------------------------------------------------------------------- + + /** + * Sets the headers of the SL Request. IMPORTANT: make sure to set all headers + * before invoking {@link #consumeRequestStream(InputStream)} + * + * @param aHeaderMap + * if null all header will be cleared. + */ + public void setHTTPHeaders(Map aHeaderMap) { + headerMap = new HashMap(); + // ensure lowercase keys + if (aHeaderMap != null) { + for (String s : aHeaderMap.keySet()) { + if (s != null) { + headerMap.put(s.toLowerCase(), aHeaderMap.get(s)); + if (s.equalsIgnoreCase(HttpUtil.HTTP_HEADER_REFERER)) { + String referer = aHeaderMap.get(s); + log.debug("Got referer header: " + referer); + srcContex.setSourceHTTPReferer(referer); + } + } + } + } + } + + public void setSourceCertificate(X509Certificate aCert) { + srcContex.setSourceCertificate(aCert); + } + + /** + * The HTTPBindingProcessor does not handle redirect URLs. It only provides + * the parameter. + * + * @return null if redirect url is not set. + */ + public String getRedirectURL() { + return getFormParameterAsString(FixedFormParameters.REDIRECTURL); + } + + public String getFormDataContentType(String aParameterName) { + FormParameter fp = formParameterMap.get(aParameterName); + if (fp != null) { + return fp.getFormParameterContentType(); + } + return null; + } + + public InputStream getFormData(String aParameterName) { + FormParameter fp = formParameterMap.get(aParameterName); + if (fp != null) { + return fp.getFormParameterValue(); + } + return null; + } + + protected void assignXMLRequest(InputStream is, String charset) + throws IOException, SLException { + Reader r = new InputStreamReader(is, charset); + StreamSource source = new StreamSource(r); + SLCommandContext commandCtx = new SLCommandContext(); + commandCtx.setSTAL(getSTAL()); + commandCtx.setURLDereferencerContext(new SimpleFormDataContextImpl(this)); + slCommand = SLCommandFactory.getInstance().createSLCommand(source, + commandCtx); + log.debug("Created new command: " + slCommand); + } + + @Override + public void run() { + boolean done = false; + int hopcounter = 0; + if (bindingProcessorError != null) { + currentState = State.FINISHED; + } + try { + while (!done) { + try { + switch (currentState) { + case INIT: + init(); + break; + case PROCESS: + processRequest(); + break; + case DATAURL: + handleDataUrl(); + if (++hopcounter > MAX_DATAURL_HOPS) { + log.error("Maximum number of dataurl hops reached"); + bindingProcessorError = new SLBindingException(2000); + currentState = State.FINISHED; + } + break; + case TRANSFORM: + transformResult(); + break; + case FINISHED: + done = true; + finished(); + break; + } + } catch (RuntimeException rte) { + throw rte; + } catch (Exception t) { + log.error("Caught unexpected exception", t); + responseCode = 200; + resultContentType = HttpUtil.TXT_XML; + responseHeaders = Collections.EMPTY_MAP; + bindingProcessorError = new SLException(2000); + currentState = State.FINISHED; + } + } + } catch (Throwable t) { + log.error("Caught unexpected exception", t); + responseCode = 200; + resultContentType = HttpUtil.TXT_XML; + responseHeaders = Collections.EMPTY_MAP; + bindingProcessorError = new SLException(2000); + currentState = State.FINISHED; + } + log.debug("Terminated http binding processor"); + } + + @Override + public void consumeRequestStream(InputStream is) { + try { + log.debug("Start consuming request stream"); + formParameterMap.clear(); + String cl = headerMap + .get(HttpUtil.HTTP_HEADER_CONTENT_TYPE.toLowerCase()); + if (cl == null) { + log.info("No content type set in http header"); + throw new SLBindingException(2006); + } + InputDecoder id = InputDecoderFactory.getDecoder(cl, is); + id.setContentType(cl); + if (id == null) { + log.error("Cannot get inputdecoder for is"); + throw new SLException(2006); + } + for (Iterator fpi = id.getFormParameterIterator(); fpi + .hasNext();) { + FormParameter fp = fpi.next(); + log.debug("Got request parameter with name: " + + fp.getFormParameterName()); + if (fp.getFormParameterName().equals(FixedFormParameters.XMLREQUEST)) { + log.debug("Creating XML Request"); + for (Iterator headerIterator = fp.getHeaderNames(); headerIterator + .hasNext();) { + String headerName = headerIterator.next(); + if (HttpUtil.CONTENT_TRANSFER_ENCODING.equalsIgnoreCase(headerName)) { + String transferEncoding = fp.getHeaderValue(headerName); + log.debug("Got transfer encoding for xmlrequest: " + + transferEncoding); + if (XML_REQ_TRANSFER_ENCODING.contains(transferEncoding)) { + log.debug("Supported transfer encoding: " + transferEncoding); + } else { + log + .error("Transferencoding not supported: " + + transferEncoding); + throw new SLBindingException(2005); + } + } + } + String charset = HttpUtil.getCharset(cl, true); + assignXMLRequest(fp.getFormParameterValue(), charset); + } else { + FormParameterStore fps = new FormParameterStore(); + fps.init(fp); + if (!fps.isEmpty()) { + log.debug("Setting from parameter: " + fps.getFormParameterName()); + formParameterMap.put(fps.getFormParameterName(), fps); + } + } + } + if (slCommand == null) { + throw new SLBindingException(2004); + } + if (is.read() != -1) { + log.error("Request input stream not completely read"); + // consume rest of stream, should never occur + throw new SLRuntimeException( + "request input stream not consumed till end"); + } + } catch (SLException slx) { + log.info("Error while consuming input stream " + slx); + bindingProcessorError = slx; + } catch (Throwable t) { + log.info("Error while consuming input stream " + t, t); + bindingProcessorError = new SLException(2000); + } finally { + try { + while (is.read() != -1) + ; + } catch (IOException e) { + log.error(e); + } + } + } + + @Override + public String getResultContentType() { + return resultContentType; + } + + protected Transformer getTransformer(String styleSheetURL) { + if (styleSheetURL == null) { + log.debug("Stylesheet URL not set"); + return null; + } + try { + URLDereferencerContext urlCtx = new SimpleFormDataContextImpl(this); + URIResolver resolver = new URIResolverAdapter(URLDereferencer + .getInstance(), urlCtx); + TransformerFactory factory = TransformerFactory.newInstance(); + StreamData sd = URLDereferencer.getInstance().dereference(styleSheetURL, + urlCtx); + Transformer t = factory.newTransformer(new StreamSource(sd.getStream())); + t.setURIResolver(resolver); + return t; + } catch (Exception ex) { + log.info("Cannot instantiate transformer", ex); + bindingProcessorError = new SLException(2002); + return null; + } + } + + protected void handleBindingProcessorError(OutputStream os, String encoding, + Transformer transformer) throws IOException { + log.debug("Writing error as result"); + ErrorResultImpl error = new ErrorResultImpl(bindingProcessorError); + try { + error.writeTo(new StreamResult(new OutputStreamWriter(os, encoding)), + transformer); + } catch (TransformerException e) { + log.fatal("Cannot write error result to stream", e); + } + } + + @Override + public void writeResultTo(OutputStream os, String encoding) + throws IOException { + if (encoding == null) { + encoding = HttpUtil.DEFAULT_CHARSET; + } + if (bindingProcessorError != null) { + log.debug("Detected error in binding processor, writing error as result"); + handleBindingProcessorError(os, encoding, transformer); + return; + } else if (dataUrlResponse != null) { + log.debug("Writing data url response as result"); + String charEnc = HttpUtil.getCharset(dataUrlResponse.getContentType(), + true); + InputStreamReader isr = new InputStreamReader( + dataUrlResponse.getStream(), charEnc); + OutputStreamWriter osw = new OutputStreamWriter(os, encoding); + if (transformer == null) { + StreamUtil.copyStream(isr, osw); + } else { + try { + transformer.transform(new StreamSource(isr), new StreamResult(osw)); + } catch (TransformerException e) { + log.fatal("Exception occured during result transformation", e); + // bindingProcessorError = new SLException(2008); + // handleBindingProcessorError(os, encoding, null); + return; + } + } + osw.flush(); + isr.close(); + } else if (slResult == null) { + // result not yet assigned -> must be a cancel + bindingProcessorError = new SLException(6001); + handleBindingProcessorError(os, encoding, transformer); + return; + } else { + log.debug("Getting result from invoker"); + OutputStreamWriter osw = new OutputStreamWriter(os, encoding); + try { + slResult.writeTo(new StreamResult(osw), transformer); + } catch (TransformerException e) { + log.fatal("Cannot write result to stream", e); + // bindingProcessorError = new SLException(2008); + // handleBindingProcessorError(os, encoding, transformer); + } + osw.flush(); + } + } + + /** + * The response code from the dataurl server or 200 if no dataurl server + * created the result + * + * @return + */ + public int getResponseCode() { + return responseCode; + } + + /** + * All headers from the data url server in case of a direct forward from the + * dataurl server. + * + * @return + */ + public Map getResponseHeaders() { + return responseHeaders; + } + + @Override + public void setLocale(Locale locale) { + if (locale == null) { + throw new NullPointerException("Locale must not be set to null"); + } + this.locale = locale; + } + } \ No newline at end of file -- cgit v1.2.3