* #3490 ApacheProxyAddressStrategy should support Forward header from Rfc7239 * #3490 ApacheProxyAddressStrategy should support Forward header from Rfc7239 Remove one copy & paste error * #3490 ApacheProxyAddressStrategy should support Forward header from Rfc7239 Fix failing test * #3490 ApacheProxyAddressStrategy should support Forward header from Rfc7239 Fix failing test
This commit is contained in:
Thomas Papke
GitHub
parent
9e46fad1b9
commit
91799b7a8c
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@ -1,7 +1,5 @@
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package ca.uhn.fhir.rest.server;
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import java.net.URI;
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/*
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* #%L
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* HAPI FHIR - Server Framework
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@ -24,18 +22,21 @@ import java.net.URI;
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import java.util.Optional;
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import javax.servlet.ServletContext;
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import javax.servlet.http.HttpServletRequest;
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import org.apache.commons.lang3.StringUtils;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.http.HttpHeaders;
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import org.springframework.http.server.ServletServerHttpRequest;
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import org.springframework.web.util.UriComponents;
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import org.springframework.web.util.UriComponentsBuilder;
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import javax.servlet.ServletContext;
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import javax.servlet.http.HttpServletRequest;
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import static java.util.Optional.ofNullable;
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import ca.uhn.fhir.rest.server.IncomingRequestAddressStrategy;
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/**
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* Works like the normal
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@ -77,7 +78,7 @@ public class ApacheProxyAddressStrategy extends IncomingRequestAddressStrategy {
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private static final String X_FORWARDED_PREFIX = "x-forwarded-prefix";
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private static final String X_FORWARDED_PROTO = "x-forwarded-proto";
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private static final String X_FORWARDED_HOST = "x-forwarded-host";
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private static final String X_FORWARDED_PORT = "x-forwarded-port";
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private static final Logger LOG = LoggerFactory
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.getLogger(ApacheProxyAddressStrategy.class);
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@ -99,62 +100,48 @@ public class ApacheProxyAddressStrategy extends IncomingRequestAddressStrategy {
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String serverBase = super.determineServerBase(servletContext, request);
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ServletServerHttpRequest requestWrapper = new ServletServerHttpRequest(
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request);
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UriComponentsBuilder uriBuilder = UriComponentsBuilder.fromHttpRequest(requestWrapper);
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uriBuilder.replaceQuery(null);
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HttpHeaders headers = requestWrapper.getHeaders();
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Optional<String> forwardedHost = headers
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.getValuesAsList(X_FORWARDED_HOST).stream().findFirst();
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return forwardedHost
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.map(s -> forwardedServerBase(serverBase, headers, s))
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.orElse(serverBase);
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adjustSchemeWithDefault(uriBuilder, headers);
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return forwardedServerBase(serverBase, headers, uriBuilder);
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}
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/**
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* If forward host ist defined, but no forward protocol, use the configured default.
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*
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* @param uriBuilder
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* @param headers
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*/
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private void adjustSchemeWithDefault(UriComponentsBuilder uriBuilder,
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HttpHeaders headers) {
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if (headers.getFirst(X_FORWARDED_HOST) != null
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&& headers.getFirst(X_FORWARDED_PROTO) == null) {
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uriBuilder.scheme(useHttps ? "https" : "http");
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}
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}
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private String forwardedServerBase(String originalServerBase,
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HttpHeaders headers, String forwardedHost) {
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HttpHeaders headers, UriComponentsBuilder uriBuilder) {
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Optional<String> forwardedPrefix = getForwardedPrefix(headers);
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LOG.debug("serverBase: {}, forwardedHost: {}, forwardedPrefix: {}",
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originalServerBase, forwardedHost, forwardedPrefix);
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LOG.debug("serverBase: {}, forwardedPrefix: {}", originalServerBase, forwardedPrefix);
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LOG.debug("request header: {}", headers);
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String host = protocol(headers) + "://" + forwardedHost;
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String hostWithOptionalPort = port(headers).map(p -> (host + ":" + p))
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.orElse(host);
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String path = forwardedPrefix
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.orElseGet(() -> pathFrom(originalServerBase));
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return joinStringsWith(hostWithOptionalPort, path, "/");
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}
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private Optional<String> port(HttpHeaders headers) {
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return ofNullable(headers.getFirst(X_FORWARDED_PORT));
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uriBuilder.replacePath(path);
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return uriBuilder.build().toUriString();
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}
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private String pathFrom(String serverBase) {
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String serverBasePath = URI.create(serverBase).getPath();
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return StringUtils.defaultIfBlank(serverBasePath, "");
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}
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private static String joinStringsWith(String left, String right,
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String joiner) {
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if (left.endsWith(joiner) && right.startsWith(joiner)) {
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return left + right.substring(1);
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} else if (left.endsWith(joiner) || right.startsWith(joiner)) {
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return left + right;
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} else {
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return left + joiner + right;
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}
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UriComponents build = UriComponentsBuilder.fromHttpUrl(serverBase).build();
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return StringUtils.defaultIfBlank(build.getPath(), "");
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}
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private Optional<String> getForwardedPrefix(HttpHeaders headers) {
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return ofNullable(headers.getFirst(X_FORWARDED_PREFIX));
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}
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private String protocol(HttpHeaders headers) {
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String protocol = headers.getFirst(X_FORWARDED_PROTO);
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if (protocol != null) {
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return protocol;
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}
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return useHttps ? "https" : "http";
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}
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/**
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* Static factory for instance using <code>http://</code>
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*/
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@ -87,6 +87,32 @@ public class ApacheProxyAddressStrategyTest {
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serverBase);
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}
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@Test
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public void testWithForwardedHostAndUnsetPort() {
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ApacheProxyAddressStrategy addressStrategy = new ApacheProxyAddressStrategy(
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true);
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MockHttpServletRequest request = prepareRequest();
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request.addHeader("X-Forwarded-Host", "my.example.host");
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request.addHeader("X-Forwarded-Port", "-1");
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String serverBase = addressStrategy.determineServerBase(null, request);
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assertEquals("https://my.example.host/imagingstudy/fhir",
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serverBase);
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}
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@Test
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public void testWithRfc7239 () {
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ApacheProxyAddressStrategy addressStrategy = new ApacheProxyAddressStrategy(
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true);
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MockHttpServletRequest request = prepareRequest();
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request.addHeader("Forwarded", "Forwarded: for=192.0.2.43,"
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+ " for=198.51.100.17;by=203.0.113.60;proto=http;host=example.com");
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String serverBase = addressStrategy.determineServerBase(null, request);
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assertEquals("http://example.com/imagingstudy/fhir",
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serverBase);
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}
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private MockHttpServletRequest prepareRequest() {
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MockHttpServletRequest request = new MockHttpServletRequest();
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request.setMethod("POST");
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