void DSIGKeyInfoValue::load()

in xsec/dsig/DSIGKeyInfoValue.cpp [78:229]
97 lines of code
33 McCabe index (conditional complexity)

void DSIGKeyInfoValue::load(void) {

	if (mp_keyInfoDOMNode == NULL || !strEquals(getDSIGLocalName(mp_keyInfoDOMNode), "KeyValue")) {

		throw XSECException(XSECException::ExpectedDSIGChildNotFound,
			"Empty or incorrect node passed to DSIGKeyInfoValue");

	}

	DOMNode *child, *p, *val;

	child = mp_keyInfoDOMNode->getFirstChild();
	while (child != NULL && child->getNodeType() != DOMNode::ELEMENT_NODE)
		child = child->getNextSibling();
	//child = findFirstChildOfType(mp_valueNode, DOMNode::ELEMENT_NODE);

	if (child == 0) {
		throw XSECException(XSECException::ExpectedDSIGChildNotFound,
			"Empty Expected value node beneath <KeyValue>");
	}

	if (strEquals(getDSIGLocalName(child), "DSAKeyValue")) {

		m_keyInfoType = KEYINFO_VALUE_DSA;

		p = findFirstChildOfType(child, DOMNode::ELEMENT_NODE);

		while (p != NULL) {

			if (strEquals(getDSIGLocalName(p), "P")) {
				val = findFirstChildOfType(p, DOMNode::TEXT_NODE);
				if (val != NULL) {
					mp_PTextNode = val;
				}
			}
			if (strEquals(getDSIGLocalName(p), "Q")) {
				val = findFirstChildOfType(p, DOMNode::TEXT_NODE);
				if (val != NULL) {
					mp_QTextNode = val;
				}
			}
			if (strEquals(getDSIGLocalName(p), "G")) {
				val = findFirstChildOfType(p, DOMNode::TEXT_NODE);
				if (val != NULL) {
					mp_GTextNode = val;
				}
			}
			if (strEquals(getDSIGLocalName(p), "Y")) {
				val = findFirstChildOfType(p, DOMNode::TEXT_NODE);
				if (val != NULL) {
					mp_YTextNode = val;
				}
			}

			p = p->getNextSibling();

		}
	}

	else if (strEquals(getDSIGLocalName(child), "RSAKeyValue")) {

		m_keyInfoType = KEYINFO_VALUE_RSA;

		p = findFirstChildOfType(child, DOMNode::ELEMENT_NODE);

		if (p == 0 || !strEquals(getDSIGLocalName(p), "Modulus")) {

			throw XSECException(XSECException::ExpectedDSIGChildNotFound,
				"Expected <Modulus> node beneath <RSAKeyValue>");

		}

		val = findFirstChildOfType(p, DOMNode::TEXT_NODE);

		if (val == 0) {

			throw XSECException(XSECException::ExpectedDSIGChildNotFound,
				"Expected a text node beneath <Modulus>");

		}
		
		mp_modulusTextNode = val;

		// Find the Exponent

		p = p->getNextSibling();

		while (p != 0 && p->getNodeType() != DOMNode::ELEMENT_NODE)
			p = p->getNextSibling();

		if (p == 0 || !strEquals(getDSIGLocalName(p), "Exponent")) {

			throw XSECException(XSECException::ExpectedDSIGChildNotFound,
				"Expected <Exponent> node beneath <RSAKeyValue>");

		}

		val = findFirstChildOfType(p, DOMNode::TEXT_NODE);

		if (val == 0) {

			throw XSECException(XSECException::ExpectedDSIGChildNotFound,
				"Expected a text node beneath <Exponent>");

		}
		
		mp_exponentTextNode = val;

	}

    else if (strEquals(getDSIG11LocalName(child), "ECKeyValue")) {

        m_keyInfoType = KEYINFO_VALUE_EC;

        p = findFirstChildOfType(child, DOMNode::ELEMENT_NODE);
        if (p == 0 || !strEquals(getDSIG11LocalName(p), "NamedCurve")) {
			throw XSECException(XSECException::ExpectedDSIGChildNotFound,
				"Expected <NamedCurve> node beneath <ECKeyValue> (<ECParameters> not supported)");
        }

        mp_namedCurveElementNode = p;

		p = p->getNextSibling();

		while (p != 0 && p->getNodeType() != DOMNode::ELEMENT_NODE)
			p = p->getNextSibling();

        if (p == 0 || !strEquals(getDSIG11LocalName(p), "PublicKey")) {
			throw XSECException(XSECException::ExpectedDSIGChildNotFound,
				"Expected <PublicKey> node beneath <ECKeyValue>");
        }

		val = findFirstChildOfType(p, DOMNode::TEXT_NODE);

		if (val == 0) {

			throw XSECException(XSECException::ExpectedDSIGChildNotFound,
				"Expected a text node beneath <PublicKey>");

		}
		
		mp_ecPublicKeyTextNode = val;

    }

	else {

		throw XSECException(XSECException::UnknownKeyValue);

	}

}