/**
* This method returns the original document appended with an XML signature element, if it exists.
* Before an advertisement is signed, the method returns the original document. After the
* advertisement is signed successfully, the method returns the original document appended with a
* valid XML signature element. For a newly discovered advertisement, the method may return the
* original document with or without an XML signature element attached, depending on whether the
* original publisher has signed it or not. If there is an XML signature attached, the verify()
* method must return true before you can trust the advertisement.
*
* <p>When the XML signature element is not attached, the method is equivalent to
* getDocument(MimeMediaType.XMLUTF8).
*
* <p>The abstract method getDocument(MimeMediaType asMimeType) is used only for the subclass to
* implement the advertisement. The getSignedDocument() is used whenever you want to get the
* document out of the advertisement.
*
* @return The document with an XML signature, if it exists.
*/
public final synchronized Document getSignedDocument() {
if (this.xmlSignatureInfoElement == null || this.xmlSignatureElement == null) {
return this.getDocument(MimeMediaType.XMLUTF8);
} else {
XMLDocument tempDoc = (XMLDocument) this.getDocument(MimeMediaType.XMLUTF8);
StructuredDocumentUtils.copyElements(
tempDoc, tempDoc.getRoot(), this.xmlSignatureInfoElement);
StructuredDocumentUtils.copyElements(tempDoc, tempDoc.getRoot(), this.xmlSignatureElement);
return tempDoc;
}
}
/**
* Return a string representation of this advertisement. The string will contain the advertisement
* pretty-print formatted as a UTF-8 encoded XML Document.
*
* @return A String containing the advertisement.
*/
@Override
public String toString() {
XMLDocument doc = (XMLDocument) getDocument(MimeMediaType.XMLUTF8);
// Force pretty printing
doc.addAttribute("xml:space", "default");
if (this.xmlSignatureInfoElement == null || this.xmlSignatureElement == null) {
// Not signature available.
} else {
StructuredDocumentUtils.copyElements(doc, doc.getRoot(), this.xmlSignatureInfoElement);
StructuredDocumentUtils.copyElements(doc, doc.getRoot(), this.xmlSignatureElement);
}
return doc.toString();
}