diff options
Diffstat (limited to 'moaSig/moa-sig-lib/src/main/java/at/gv/egovernment/moa/spss/server/iaik/xml/XSLTTransformationImpl.java')
| -rw-r--r-- | moaSig/moa-sig-lib/src/main/java/at/gv/egovernment/moa/spss/server/iaik/xml/XSLTTransformationImpl.java | 350 |
1 files changed, 170 insertions, 180 deletions
diff --git a/moaSig/moa-sig-lib/src/main/java/at/gv/egovernment/moa/spss/server/iaik/xml/XSLTTransformationImpl.java b/moaSig/moa-sig-lib/src/main/java/at/gv/egovernment/moa/spss/server/iaik/xml/XSLTTransformationImpl.java index 9dc45fc..6c71f42 100644 --- a/moaSig/moa-sig-lib/src/main/java/at/gv/egovernment/moa/spss/server/iaik/xml/XSLTTransformationImpl.java +++ b/moaSig/moa-sig-lib/src/main/java/at/gv/egovernment/moa/spss/server/iaik/xml/XSLTTransformationImpl.java @@ -45,204 +45,194 @@ import at.gv.egovernment.moaspss.util.XPathException; import at.gv.egovernment.moaspss.util.XPathUtils; import iaik.server.modules.xml.MOAXSecProvider; import iaik.server.modules.xml.XSLTTransformation; -import iaik.xml.crypto.dsig.XMLSignatureFactory; -import iaik.xml.filter.impl.dsig.CanonInputStream; -import iaik.xml.filter.impl.dsig.Canonicalizer; -import iaik.xml.filter.impl.dsig.Traverser; /** * A <code>Transformation</code> containing an XSLT transformation. - * + * * @author Patrick Peck * @version $Id$ */ public class XSLTTransformationImpl extends TransformationImpl implements XSLTTransformation { - /** The XSLT stylesheet. */ - private Element styleSheetElement; - /** - * The hash code of the canonicalized stylesheet. If calculated, this value - * should be != 0. - */ - private int hashCode; - - /** - * Create a new <code>XSLTTransformationImpl</code> object. - * - * @param styleSheetElement - * The XSLT stylesheet element. - */ - public XSLTTransformationImpl(Element styleSheetElement) { - setAlgorithmURI(XSLTTransformation.XSLT); - setStyleSheetElement(styleSheetElement); - } - - /** - * Set the XSLT stylesheet element. - * - * @param styleSheetElement - * The XSLT stylesheet element to set. - */ - protected void setStyleSheetElement(Element styleSheetElement) { - this.styleSheetElement = styleSheetElement; - this.hashCode = 0; - } - - /** - * @see iaik.server.modules.xml.XSLTTransformation#getStylesheetElement() - */ - public Element getStylesheetElement() { - return styleSheetElement; - } - - /** - * Compare this <code>XSLTTransformation</code> to another. - * - * @param other - * The object to compare this <code>XSLTTransformation</code> to. - * @return <code>true</code>, if <code>other</code> is an - * <code>XSLTTransformation</code> and if the canonicalized - * representations of the stylesheets contained in <code>this</code> - * and <code>other</code> match. Otherwise, <code>false</code> is - * returned. - * @see java.lang.Object#equals(Object) - */ - public boolean equals(Object other) { - if (other instanceof XSLTTransformation) { - XSLTTransformation xslt = (XSLTTransformation) other; - - return compareElements(getStylesheetElement(), xslt.getStylesheetElement()); - } - return false; - } - - /** - * @see java.lang.Object#hashCode() - */ - public int hashCode() { - if (hashCode == 0) { - hashCode = calculateHashCode(getStylesheetElement()); - } - return hashCode; - } - - /** - * Calculate the hash code for a DOM element by canonicalizing it. - * - * @param element - * The DOM element for which the hash code is to be calculated. - * @return int The hash code, or <code>0</code>, if it could not be - * calculated. - */ - private static int calculateHashCode(Element element) { - try { - InputStream is = canonicalize(element); - byte[] buf = new byte[256]; - int hashCode = 1; - int length; - int i; - - while ((length = is.read(buf)) > 0) { - for (i = 0; i < length; i++) { - hashCode += buf[i] * 31 + i; - } - } - is.close(); - return hashCode; - } catch (IOException e) { - return 0; - } catch (NoSuchAlgorithmException e) { - return 0; - } catch (InvalidAlgorithmParameterException e) { - return 0; - } catch (TransformException e) { - return 0; - } - } - - /** - * Compare two DOM elements by canonicalizing their contents and comparing - * the resulting byte stream. - * - * @param elem1 - * The 1st element to compare. - * @param elem2 - * The 2nd element to compare. - * @return boolean <code>true</code>, if the elements are considered equal - * after canonicalization. Otherwise <code>false</code> is returned. - */ - private static boolean compareElements(Element elem1, Element elem2) { - try { - InputStream is1 = canonicalize(elem1); - InputStream is2 = canonicalize(elem2); - return StreamUtils.compareStreams(is1, is2); - } catch (IOException e) { - return false; - } catch (NoSuchAlgorithmException e) { - return false; - } catch (InvalidAlgorithmParameterException e) { - return false; - } catch (TransformException e) { - return false; - } - } - - /** - * Canonicalize a DOM element. + /** The XSLT stylesheet. */ + private Element styleSheetElement; + /** + * The hash code of the canonicalized stylesheet. If calculated, this value + * should be != 0. + */ + private int hashCode; + + /** + * Create a new <code>XSLTTransformationImpl</code> object. + * + * @param styleSheetElement The XSLT stylesheet element. + */ + public XSLTTransformationImpl(Element styleSheetElement) { + setAlgorithmURI(XSLTTransformation.XSLT); + setStyleSheetElement(styleSheetElement); + } + + /** + * Set the XSLT stylesheet element. + * + * @param styleSheetElement The XSLT stylesheet element to set. + */ + protected void setStyleSheetElement(Element styleSheetElement) { + this.styleSheetElement = styleSheetElement; + this.hashCode = 0; + } + + /** + * @see iaik.server.modules.xml.XSLTTransformation#getStylesheetElement() + */ + @Override + public Element getStylesheetElement() { + return styleSheetElement; + } + + /** + * Compare this <code>XSLTTransformation</code> to another. + * + * @param other The object to compare this <code>XSLTTransformation</code> to. + * @return <code>true</code>, if <code>other</code> is an + * <code>XSLTTransformation</code> and if the canonicalized + * representations of the stylesheets contained in <code>this</code> and + * <code>other</code> match. Otherwise, <code>false</code> is returned. + * @see java.lang.Object#equals(Object) + */ + @Override + public boolean equals(Object other) { + if (other instanceof XSLTTransformation) { + final XSLTTransformation xslt = (XSLTTransformation) other; + + return compareElements(getStylesheetElement(), xslt.getStylesheetElement()); + } + return false; + } + + /** + * @see java.lang.Object#hashCode() + */ + @Override + public int hashCode() { + if (hashCode == 0) { + hashCode = calculateHashCode(getStylesheetElement()); + } + return hashCode; + } + + /** + * Calculate the hash code for a DOM element by canonicalizing it. * + * @param element The DOM element for which the hash code is to be calculated. + * @return int The hash code, or <code>0</code>, if it could not be calculated. + */ + private static int calculateHashCode(Element element) { + try { + final InputStream is = canonicalize(element); + final byte[] buf = new byte[256]; + int hashCode = 1; + int length; + int i; + + while ((length = is.read(buf)) > 0) { + for (i = 0; i < length; i++) { + hashCode += buf[i] * 31 + i; + } + } + is.close(); + return hashCode; + } catch (final IOException e) { + return 0; + } catch (final NoSuchAlgorithmException e) { + return 0; + } catch (final InvalidAlgorithmParameterException e) { + return 0; + } catch (final TransformException e) { + return 0; + } + } + + /** + * Compare two DOM elements by canonicalizing their contents and comparing the + * resulting byte stream. + * + * @param elem1 The 1st element to compare. + * @param elem2 The 2nd element to compare. + * @return boolean <code>true</code>, if the elements are considered equal after + * canonicalization. Otherwise <code>false</code> is returned. + */ + private static boolean compareElements(Element elem1, Element elem2) { + try { + final InputStream is1 = canonicalize(elem1); + final InputStream is2 = canonicalize(elem2); + return StreamUtils.compareStreams(is1, is2); + } catch (final IOException e) { + return false; + } catch (final NoSuchAlgorithmException e) { + return false; + } catch (final InvalidAlgorithmParameterException e) { + return false; + } catch (final TransformException e) { + return false; + } + } + + /** + * Canonicalize a DOM element. + * * @param element The element to canonicalize. * @return InputStream A stream with the canonicalized data. - * @throws InvalidAlgorithmParameterException - * @throws IOException - * @throws TransformException - * @throws AlgorithmException An error occurred canonicalizing the element. + * @throws InvalidAlgorithmParameterException + * @throws IOException + * @throws TransformException + * @throws AlgorithmException An error occurred canonicalizing + * the element. */ private static InputStream canonicalize(Element element) - throws NoSuchAlgorithmException, InvalidAlgorithmParameterException, IOException, TransformException { - // CanonicalizationMethod canonicalizationMethod = - // MOAXSecProvider.getXMLSignatureFactory().newCanonicalizationMethod( - // CanonicalizationMethod.EXCLUSIVE, new ExcC14NParameterSpec()); - - //CanonicalizationAlgorithm c14n = - // new CanonicalizationAlgorithmImplExclusiveCanonicalXML(); - //Traverser traverser = new Traverser(element, true, true); - //Canonicalizer canonicalizer = new Canonicalizer(traverser, false, true, null); - - //return new CanonInputStream(canonicalizer); - - CanonicalizationMethod canonicalizationMethod = - MOAXSecProvider.getXMLSignatureFactory().newCanonicalizationMethod( - CanonicalizationMethod.EXCLUSIVE, new ExcC14NParameterSpec()); - - //CanonicalizationAlgorithm c14n = - // new CanonicalizationAlgorithmImplExclusiveCanonicalXML(); - NodeList nodeList; - - try { - nodeList = XPathUtils.selectNodeList(element, - XPathUtils.ALL_NODES_XPATH); - } catch (XPathException e) { - nodeList = new NodeListAdapter(Collections.EMPTY_LIST); - } - //c14n.setInput(nodeList); - ByteArrayOutputStream baos = new ByteArrayOutputStream(); - canonicalizationMethod.transform(new - NodeListToNodeSetDataAdapter(nodeList), null, baos); - baos.close(); - return new ByteArrayInputStream(baos.toByteArray()); - /* - NodeList nodeList; - + throws NoSuchAlgorithmException, InvalidAlgorithmParameterException, IOException, TransformException { + // CanonicalizationMethod canonicalizationMethod = + // MOAXSecProvider.getXMLSignatureFactory().newCanonicalizationMethod( + // CanonicalizationMethod.EXCLUSIVE, new ExcC14NParameterSpec()); + + // CanonicalizationAlgorithm c14n = + // new CanonicalizationAlgorithmImplExclusiveCanonicalXML(); + // Traverser traverser = new Traverser(element, true, true); + // Canonicalizer canonicalizer = new Canonicalizer(traverser, false, true, + // null); + + // return new CanonInputStream(canonicalizer); + + final CanonicalizationMethod canonicalizationMethod = + MOAXSecProvider.getXMLSignatureFactory().newCanonicalizationMethod( + CanonicalizationMethod.EXCLUSIVE, new ExcC14NParameterSpec()); + + // CanonicalizationAlgorithm c14n = + // new CanonicalizationAlgorithmImplExclusiveCanonicalXML(); + NodeList nodeList; + try { - nodeList = XPathUtils.selectNodeList(element, XPathUtils.ALL_NODES_XPATH); - } catch (XPathException e) { + nodeList = XPathUtils.selectNodeList(element, + XPathUtils.ALL_NODES_XPATH); + } catch (final XPathException e) { nodeList = new NodeListAdapter(Collections.EMPTY_LIST); } - //c14n.setInput(nodeList); - ByteArrayOutputStream baos = new ByteArrayOutputStream(); + // c14n.setInput(nodeList); + final ByteArrayOutputStream baos = new ByteArrayOutputStream(); canonicalizationMethod.transform(new NodeListToNodeSetDataAdapter(nodeList), null, baos); baos.close(); - return new ByteArrayInputStream(baos.toByteArray());*/ + return new ByteArrayInputStream(baos.toByteArray()); + /* + * NodeList nodeList; + * + * try { nodeList = XPathUtils.selectNodeList(element, + * XPathUtils.ALL_NODES_XPATH); } catch (XPathException e) { nodeList = new + * NodeListAdapter(Collections.EMPTY_LIST); } //c14n.setInput(nodeList); + * ByteArrayOutputStream baos = new ByteArrayOutputStream(); + * canonicalizationMethod.transform(new NodeListToNodeSetDataAdapter(nodeList), + * null, baos); baos.close(); return new + * ByteArrayInputStream(baos.toByteArray()); + */ } } |