Examples with AccessDeniedException org.apache.nifi.authorization.AccessDeniedException used on opensource projects

Example 26 with AccessDeniedException

use of org.apache.nifi.authorization.AccessDeniedException in project nifi by apache.

the class X509AuthenticationProvider method authenticate.

@Override
public Authentication authenticate(Authentication authentication) throws AuthenticationException {
    final X509AuthenticationRequestToken request = (X509AuthenticationRequestToken) authentication;
    // attempt to authenticate if certificates were found
    final AuthenticationResponse authenticationResponse;
    try {
        authenticationResponse = certificateIdentityProvider.authenticate(request.getCertificates());
    } catch (final IllegalArgumentException iae) {
        throw new InvalidAuthenticationException(iae.getMessage(), iae);
    }
    if (StringUtils.isBlank(request.getProxiedEntitiesChain())) {
        final String mappedIdentity = mapIdentity(authenticationResponse.getIdentity());
        return new NiFiAuthenticationToken(new NiFiUserDetails(new Builder().identity(mappedIdentity).groups(getUserGroups(mappedIdentity)).clientAddress(request.getClientAddress()).build()));
    } else {
        // build the entire proxy chain if applicable - <end-user><proxy1><proxy2>
        final List<String> proxyChain = new ArrayList<>(ProxiedEntitiesUtils.tokenizeProxiedEntitiesChain(request.getProxiedEntitiesChain()));
        proxyChain.add(authenticationResponse.getIdentity());
        // add the chain as appropriate to each proxy
        NiFiUser proxy = null;
        for (final ListIterator<String> chainIter = proxyChain.listIterator(proxyChain.size()); chainIter.hasPrevious(); ) {
            String identity = chainIter.previous();
            // determine if the user is anonymous
            final boolean isAnonymous = StringUtils.isBlank(identity);
            if (isAnonymous) {
                identity = StandardNiFiUser.ANONYMOUS_IDENTITY;
            } else {
                identity = mapIdentity(identity);
            }
            final Set<String> groups = getUserGroups(identity);
            // Only set the client address for client making the request because we don't know the clientAddress of the proxied entities
            String clientAddress = (proxy == null) ? request.getClientAddress() : null;
            proxy = createUser(identity, groups, proxy, clientAddress, isAnonymous);
            if (chainIter.hasPrevious()) {
                try {
                    PROXY_AUTHORIZABLE.authorize(authorizer, RequestAction.WRITE, proxy);
                } catch (final AccessDeniedException e) {
                    throw new UntrustedProxyException(String.format("Untrusted proxy %s", identity));
                }
            }
        }
        return new NiFiAuthenticationToken(new NiFiUserDetails(proxy));
    }
}