Examples with UnmarshallerFactory org.opensaml.core.xml.io.UnmarshallerFactory used on opensource projects

Example 1 with UnmarshallerFactory

use of org.opensaml.core.xml.io.UnmarshallerFactory in project cas by apereo.

the class WsFederationHelper method parseTokenFromString.

/**
     * parseTokenFromString converts a raw wresult and extracts it into an assertion.
     *
     * @param wresult the raw token returned by the IdP
     * @param config  the config
     * @return an assertion
     */
public Assertion parseTokenFromString(final String wresult, final WsFederationConfiguration config) {
    LOGGER.debug("Result token received from ADFS is [{}]", wresult);
    try (InputStream in = new ByteArrayInputStream(wresult.getBytes(StandardCharsets.UTF_8))) {
        LOGGER.debug("Parsing token into a document");
        final Document document = configBean.getParserPool().parse(in);
        final Element metadataRoot = document.getDocumentElement();
        final UnmarshallerFactory unmarshallerFactory = configBean.getUnmarshallerFactory();
        final Unmarshaller unmarshaller = unmarshallerFactory.getUnmarshaller(metadataRoot);
        if (unmarshaller == null) {
            throw new IllegalArgumentException("Unmarshaller for the metadata root element cannot be determined");
        }
        LOGGER.debug("Unmarshalling the document into a security token response");
        final RequestSecurityTokenResponse rsToken = (RequestSecurityTokenResponse) unmarshaller.unmarshall(metadataRoot);
        if (rsToken == null || rsToken.getRequestedSecurityToken() == null) {
            throw new IllegalArgumentException("Request security token response is null");
        }
        //Get our SAML token
        LOGGER.debug("Locating list of requested security tokens");
        final List<RequestedSecurityToken> rst = rsToken.getRequestedSecurityToken();
        if (rst.isEmpty()) {
            throw new IllegalArgumentException("No requested security token response is provided in the response");
        }
        LOGGER.debug("Locating the first occurrence of a requested security token in the list");
        final RequestedSecurityToken reqToken = rst.get(0);
        if (reqToken.getSecurityTokens() == null || reqToken.getSecurityTokens().isEmpty()) {
            throw new IllegalArgumentException("Requested security token response is not carrying any security tokens");
        }
        Assertion assertion = null;
        LOGGER.debug("Locating the first occurrence of a security token from the requested security token");
        XMLObject securityToken = reqToken.getSecurityTokens().get(0);
        if (securityToken instanceof EncryptedData) {
            try {
                LOGGER.debug("Security token is encrypted. Attempting to decrypt to extract the assertion");
                final EncryptedData encryptedData = EncryptedData.class.cast(securityToken);
                final Decrypter decrypter = buildAssertionDecrypter(config);
                LOGGER.debug("Built an instance of [{}]", decrypter.getClass().getName());
                securityToken = decrypter.decryptData(encryptedData);
            } catch (final Exception e) {
                throw new IllegalArgumentException("Unable to decrypt security token", e);
            }
        }
        if (securityToken instanceof Assertion) {
            LOGGER.debug("Security token is an assertion.");
            assertion = Assertion.class.cast(securityToken);
        }
        if (assertion == null) {
            throw new IllegalArgumentException("Could not extract or decrypt an assertion based on the security token provided");
        }
        LOGGER.debug("Extracted assertion successfully: [{}]", assertion);
        return assertion;
    } catch (final Exception ex) {
        LOGGER.warn(ex.getMessage());
        return null;
    }
}