diff options
Diffstat (limited to 'spss.server/src/at/gv/egovernment/moa/spss/api/xmlbind/VerifyCMSSignatureRequestParser.java')
-rw-r--r-- | spss.server/src/at/gv/egovernment/moa/spss/api/xmlbind/VerifyCMSSignatureRequestParser.java | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/spss.server/src/at/gv/egovernment/moa/spss/api/xmlbind/VerifyCMSSignatureRequestParser.java b/spss.server/src/at/gv/egovernment/moa/spss/api/xmlbind/VerifyCMSSignatureRequestParser.java new file mode 100644 index 000000000..74d14b7cc --- /dev/null +++ b/spss.server/src/at/gv/egovernment/moa/spss/api/xmlbind/VerifyCMSSignatureRequestParser.java @@ -0,0 +1,169 @@ +package at.gv.egovernment.moa.spss.api.xmlbind; + +import java.io.InputStream; +import java.util.ArrayList; +import java.util.Date; +import java.util.List; +import java.util.StringTokenizer; + +import org.w3c.dom.Element; + +import at.gv.egovernment.moa.util.Base64Utils; +import at.gv.egovernment.moa.util.CollectionUtils; +import at.gv.egovernment.moa.util.Constants; +import at.gv.egovernment.moa.util.DOMUtils; +import at.gv.egovernment.moa.util.XPathUtils; + +import at.gv.egovernment.moa.spss.MOAApplicationException; +import at.gv.egovernment.moa.spss.api.SPSSFactory; +import at.gv.egovernment.moa.spss.api.cmsverify.CMSContent; +import at.gv.egovernment.moa.spss.api.cmsverify.CMSDataObject; +import at.gv.egovernment.moa.spss.api.cmsverify.VerifyCMSSignatureRequest; +import at.gv.egovernment.moa.spss.api.common.MetaInfo; + +/** + * A parser to parse <code>VerifyCMSSignatureRequest</code> DOM trees into + * <code>VerifyCMSSignatureRequest</code> API objects. + * + * @author Patrick Peck + * @version $Id$ + */ +public class VerifyCMSSignatureRequestParser { + + // + // XPath expressions for selecting parts of the DOM message + // + private static final String MOA = Constants.MOA_PREFIX + ":"; + private static final String DATE_TIME_XPATH = MOA + "DateTime"; + private static final String CMS_SIGNATURE_XPATH = MOA + "CMSSignature"; + private static final String TRUST_PROFILE_ID_XPATH = MOA + "TrustProfileID"; + private static final String DATA_OBJECT_XPATH = MOA + "DataObject"; + private static final String META_INFO_XPATH = MOA + "MetaInfo"; + private static final String CONTENT_XPATH = MOA + "Content"; + private static final String BASE64_CONTENT_XPATH = MOA + "Base64Content"; + + /** The <code>SPSSFactory</code> for creating new API objects. */ + private SPSSFactory factory = SPSSFactory.getInstance(); + + /** + * Parse a <code>VerifyCMSSignatureRequest</code> DOM element, as defined + * by the MOA schema. + * + * @param requestElem The <code>VerifyCMSSignatureRequest</code> to parse. The + * request must have been successfully parsed against the schema for this + * method to succeed. + * @return A <code>VerifyCMSSignatureRequest</code> API objects containing + * the data from the DOM element. + * @throws MOAApplicationException An error occurred parsing the request. + */ + public VerifyCMSSignatureRequest parse(Element requestElem) + throws MOAApplicationException { + + int[] signatories = parseSignatories(requestElem); + Date dateTime = + RequestParserUtils.parseDateTime(requestElem, DATE_TIME_XPATH); + String cmsSignatureStr = + XPathUtils.getElementValue(requestElem, CMS_SIGNATURE_XPATH, ""); + CMSDataObject dataObject = parseDataObject(requestElem); + String trustProfileID = + XPathUtils.getElementValue(requestElem, TRUST_PROFILE_ID_XPATH, null); + InputStream cmsSignature = + Base64Utils.decodeToStream(cmsSignatureStr, true); + + return factory.createVerifyCMSSignatureRequest( + signatories, + dateTime, + cmsSignature, + dataObject, + trustProfileID); + } + + /** + * Parse the <code>Signatories</code> attribute contained in the + * <code>VerifyCMSSignatureRequest</code> DOM element. + * + * @param requestElem The <code>VerifyCMSSignatureRequest</code> DOM element. + * @return The signatories contained in the given + * <code>VerifyCMSSignatureRequest</code> DOM element. + */ + private int[] parseSignatories(Element requestElem) { + String signatoriesStr = requestElem.getAttribute("Signatories"); + + if ("all".equals(signatoriesStr)) { + return VerifyCMSSignatureRequest.ALL_SIGNATORIES; + } else { + StringTokenizer tokenizer = new StringTokenizer(signatoriesStr); + List signatoriesList = new ArrayList(); + int[] signatories; + + // put the signatories into a List + while (tokenizer.hasMoreTokens()) { + try { + signatoriesList.add(new Integer(tokenizer.nextToken())); + } catch (NumberFormatException e) { + // this cannot occur if the request has been validated + } + } + + // convert the List into an int array + signatories = CollectionUtils.toIntArray(signatoriesList); + + return signatories; + } + } + + /** + * Parse a the <code>DataObject</code> DOM element contained in a given + * <code>VerifyCMSSignatureRequest</code> DOM element. + * + * @param requestElem The <code>VerifyCMSSignatureRequest</code> DOM element + * to parse. + * @return The <code>CMSDataObject</code> API object containing the data + * from the <code>DataObject</code> DOM element. + */ + private CMSDataObject parseDataObject(Element requestElem) { + Element dataObjectElem = + (Element) XPathUtils.selectSingleNode(requestElem, DATA_OBJECT_XPATH); + + if (dataObjectElem != null) { + Element metaInfoElem = + (Element) XPathUtils.selectSingleNode(dataObjectElem, META_INFO_XPATH); + MetaInfo metaInfo = null; + Element contentElem = + (Element) XPathUtils.selectSingleNode(dataObjectElem, CONTENT_XPATH); + CMSContent content = parseContent(contentElem); + + if (metaInfoElem != null) { + metaInfo = RequestParserUtils.parseMetaInfo(metaInfoElem); + } + + return factory.createCMSDataObject(metaInfo, content); + } else { + return null; + } + + } + + /** + * Parse the content contained in a <code>CMSContentBaseType</code> kind of + * DOM element. + * + * @param contentElem The <code>CMSContentBaseType</code> kind of element to + * parse. + * @return A <code>CMSDataObject</code> API object containing the data + * from the given DOM element. + */ + private CMSContent parseContent(Element contentElem) { + Element base64ContentElem = + (Element) XPathUtils.selectSingleNode(contentElem, BASE64_CONTENT_XPATH); + + if (base64ContentElem != null) { + String base64Str = DOMUtils.getText(base64ContentElem); + InputStream binaryContent = Base64Utils.decodeToStream(base64Str, true); + return factory.createCMSContent(binaryContent); + } else { + return factory.createCMSContent( + contentElem.getAttribute("Reference")); + } + } +} |