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Unify ServerProperties X-Forwarded-For support

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Add a new `server.use-forward-headers` property which can be used to
switch on X-Forwarded-For header support in all supported embedded
servlet containers.

This commit reverts the decision to enable `RemoteIpValve` with Tomcat
by default (gh-3782) and requires that either `user-forward-headers` is
set to true or that `server.tomcat.protocol-header` or
`server.tomcat.remote-ip-header` are set.

See gh-4018
See gh-3782
pull/4057/merge
Phillip Webb 9 years ago
parent c35105b868
commit 20b29db512
2 changed files with 96 additions and 26 deletions
Show Stats Download Patch File Download Diff File

75
spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/ServerProperties.java
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@ -47,6 +47,7 @@ import org.springframework.boot.context.embedded.InitParameterConfiguringServlet
import org.springframework.boot.context.embedded.JspServlet;
import org.springframework.boot.context.embedded.ServletContextInitializer;
import org.springframework.boot.context.embedded.Ssl;
import org.springframework.boot.context.embedded.jetty.JettyEmbeddedServletContainerFactory;
import org.springframework.boot.context.embedded.tomcat.TomcatConnectorCustomizer;
import org.springframework.boot.context.embedded.tomcat.TomcatContextCustomizer;
import org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory;
@ -102,6 +103,11 @@ public class ServerProperties implements EmbeddedServletContainerCustomizer, Ord
*/
private final Map<String, String> contextParameters = new HashMap<String, String>();
/**
* If X-Forwarded-* headers should be applied to the HttpRequest.
*/
private boolean useForwardHeaders;
private Session session = new Session();
@NestedConfigurationProperty
@ -115,6 +121,8 @@ public class ServerProperties implements EmbeddedServletContainerCustomizer, Ord
private final Tomcat tomcat = new Tomcat();
private final Jetty jetty = new Jetty();
private final Undertow undertow = new Undertow();
@Override
@ -150,11 +158,16 @@ public class ServerProperties implements EmbeddedServletContainerCustomizer, Ord
container.setCompression(getCompression());
}
if (container instanceof TomcatEmbeddedServletContainerFactory) {
getTomcat()
.customizeTomcat((TomcatEmbeddedServletContainerFactory) container);
getTomcat().customizeTomcat(this,
(TomcatEmbeddedServletContainerFactory) container);
}
if (container instanceof JettyEmbeddedServletContainerFactory) {
getJetty().customizeJetty(this,
(JettyEmbeddedServletContainerFactory) container);
}
if (container instanceof UndertowEmbeddedServletContainerFactory) {
getUndertow().customizeUndertow(
getUndertow().customizeUndertow(this,
(UndertowEmbeddedServletContainerFactory) container);
}
container.addInitializers(new SessionConfiguringInitializer(this.session));
@ -267,6 +280,14 @@ public class ServerProperties implements EmbeddedServletContainerCustomizer, Ord
return this.contextParameters;
}
public boolean isUseForwardHeaders() {
return this.useForwardHeaders;
}
public void setUseForwardHeaders(boolean useForwardHeaders) {
this.useForwardHeaders = useForwardHeaders;
}
/**
* Get the session timeout.
* @return the session timeout
@ -320,6 +341,10 @@ public class ServerProperties implements EmbeddedServletContainerCustomizer, Ord
return this.tomcat;
}
private Jetty getJetty() {
return this.jetty;
}
public Undertow getUndertow() {
return this.undertow;
}
@ -488,9 +513,8 @@ public class ServerProperties implements EmbeddedServletContainerCustomizer, Ord
/**
* Header that holds the incoming protocol, usually named "X-Forwarded-Proto".
* Configures a RemoteIpValve only if remoteIpHeader is also set.
*/
private String protocolHeader = "x-forwarded-proto";
private String protocolHeader;
/**
* Value of the protocol header that indicates that the incoming request uses SSL.
@ -500,13 +524,12 @@ public class ServerProperties implements EmbeddedServletContainerCustomizer, Ord
/**
* Name of the HTTP header used to override the original port value.
*/
private String portHeader = "x-forwarded-port";
private String portHeader = "X-Forwarded-Port";
/**
* Name of the http header from which the remote ip is extracted. Configures a
* RemoteIpValve only if protocolHeader is also set.
* Name of the http header from which the remote ip is extracted..
*/
private String remoteIpHeader = "x-forwarded-for";
private String remoteIpHeader;
/**
* Tomcat base directory. If not specified a temporary directory will be used.
@ -659,12 +682,13 @@ public class ServerProperties implements EmbeddedServletContainerCustomizer, Ord
this.uriEncoding = uriEncoding;
}
void customizeTomcat(TomcatEmbeddedServletContainerFactory factory) {
void customizeTomcat(ServerProperties serverProperties,
TomcatEmbeddedServletContainerFactory factory) {
if (getBasedir() != null) {
factory.setBaseDirectory(getBasedir());
}
customizeBackgroundProcessorDelay(factory);
customizeHeaders(factory);
customizeRemoteIpValve(serverProperties, factory);
if (this.maxThreads > 0) {
customizeMaxThreads(factory);
}
@ -691,14 +715,20 @@ public class ServerProperties implements EmbeddedServletContainerCustomizer, Ord
});
}
private void customizeHeaders(TomcatEmbeddedServletContainerFactory factory) {
String remoteIpHeader = getRemoteIpHeader();
private void customizeRemoteIpValve(ServerProperties properties,
TomcatEmbeddedServletContainerFactory factory) {
String protocolHeader = getProtocolHeader();
if (StringUtils.hasText(remoteIpHeader)
&& StringUtils.hasText(protocolHeader)) {
String remoteIpHeader = getRemoteIpHeader();
// For back compatibility the valve is also enabled if protocol-header is set
if (StringUtils.hasText(protocolHeader)
|| StringUtils.hasText(remoteIpHeader)
|| properties.isUseForwardHeaders()) {
RemoteIpValve valve = new RemoteIpValve();
valve.setProtocolHeader(StringUtils.hasLength(protocolHeader) ? protocolHeader
: "X-Forwarded-Proto");
if (StringUtils.hasLength(remoteIpHeader)) {
valve.setRemoteIpHeader(remoteIpHeader);
valve.setProtocolHeader(protocolHeader);
}
// The internal proxies default to a white list of "safe" internal IP
// addresses
valve.setInternalProxies(getInternalProxies());
@ -822,6 +852,15 @@ public class ServerProperties implements EmbeddedServletContainerCustomizer, Ord
}
private static class Jetty {
void customizeJetty(ServerProperties serverProperties,
JettyEmbeddedServletContainerFactory factory) {
factory.setUseForwardHeaders(serverProperties.isUseForwardHeaders());
}
}
public static class Undertow {
/**
@ -958,7 +997,8 @@ public class ServerProperties implements EmbeddedServletContainerCustomizer, Ord
getAccesslog().setDir(accessLogDir);
}
void customizeUndertow(UndertowEmbeddedServletContainerFactory factory) {
void customizeUndertow(ServerProperties serverProperties,
UndertowEmbeddedServletContainerFactory factory) {
factory.setBufferSize(this.bufferSize);
factory.setBuffersPerRegion(this.buffersPerRegion);
factory.setIoThreads(this.ioThreads);
@ -967,6 +1007,7 @@ public class ServerProperties implements EmbeddedServletContainerCustomizer, Ord
factory.setAccessLogDirectory(this.accesslog.dir);
factory.setAccessLogPattern(this.accesslog.pattern);
factory.setAccessLogEnabled(this.accesslog.enabled);
factory.setUseForwardHeaders(serverProperties.isUseForwardHeaders());
}
public static class Accesslog {

45
spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/ServerPropertiesTests.java
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@ -39,7 +39,9 @@ import org.springframework.beans.MutablePropertyValues;
import org.springframework.boot.bind.RelaxedDataBinder;
import org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer;
import org.springframework.boot.context.embedded.ServletContextInitializer;
import org.springframework.boot.context.embedded.jetty.JettyEmbeddedServletContainerFactory;
import org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory;
import org.springframework.boot.context.embedded.undertow.UndertowEmbeddedServletContainerFactory;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.instanceOf;
@ -50,6 +52,7 @@ import static org.mockito.BDDMockito.given;
import static org.mockito.Mockito.atLeastOnce;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.verify;
/**
@ -252,27 +255,38 @@ public class ServerPropertiesTests {
map.put("server.tomcat.remote_ip_header", "");
map.put("server.tomcat.protocol_header", "");
bindProperties(map);
TomcatEmbeddedServletContainerFactory container = new TomcatEmbeddedServletContainerFactory();
this.properties.customize(container);
assertEquals(0, container.getValves().size());
}
@Test
public void defaultTomcatRemoteIpValve() throws Exception {
// Since 1.3.0 no need to explicitly set header names
Map<String, String> map = new HashMap<String, String>();
// Since 1.1.7 you need to specify at least the protocol
map.put("server.tomcat.protocol_header", "X-Forwarded-Proto");
map.put("server.tomcat.remote_ip_header", "X-Forwarded-For");
bindProperties(map);
testRemoteIpValveConfigured();
}
@Test
public void setUseForwardHeadersTomcat() throws Exception {
// Since 1.3.0 no need to explicitly set header names if use-forward-header=true
this.properties.setUseForwardHeaders(true);
testRemoteIpValveConfigured();
}
private void testRemoteIpValveConfigured() {
TomcatEmbeddedServletContainerFactory container = new TomcatEmbeddedServletContainerFactory();
this.properties.customize(container);
assertEquals(1, container.getValves().size());
Valve valve = container.getValves().iterator().next();
assertThat(valve, instanceOf(RemoteIpValve.class));
RemoteIpValve remoteIpValve = (RemoteIpValve) valve;
assertEquals("x-forwarded-proto", remoteIpValve.getProtocolHeader());
assertEquals("X-Forwarded-Proto", remoteIpValve.getProtocolHeader());
assertEquals("https", remoteIpValve.getProtocolHeaderHttpsValue());
assertEquals("x-forwarded-for", remoteIpValve.getRemoteIpHeader());
assertEquals("X-Forwarded-For", remoteIpValve.getRemoteIpHeader());
String expectedInternalProxies = "10\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}|" // 10/8
+ "192\\.168\\.\\d{1,3}\\.\\d{1,3}|" // 192.168/16
+ "169\\.254\\.\\d{1,3}\\.\\d{1,3}|" // 169.254/16
@ -280,7 +294,6 @@ public class ServerPropertiesTests {
+ "172\\.1[6-9]{1}\\.\\d{1,3}\\.\\d{1,3}|" // 172.16/12
+ "172\\.2[0-9]{1}\\.\\d{1,3}\\.\\d{1,3}|"
+ "172\\.3[0-1]{1}\\.\\d{1,3}\\.\\d{1,3}";
assertEquals(expectedInternalProxies, remoteIpValve.getInternalProxies());
}
@ -308,6 +321,22 @@ public class ServerPropertiesTests {
assertEquals("192.168.0.1", remoteIpValve.getInternalProxies());
}
@Test
public void setUseForwardHeadersUndertow() throws Exception {
this.properties.setUseForwardHeaders(true);
UndertowEmbeddedServletContainerFactory container = spy(new UndertowEmbeddedServletContainerFactory());
this.properties.customize(container);
verify(container).setUseForwardHeaders(true);
}
@Test
public void setUseForwardHeadersJetty() throws Exception {
this.properties.setUseForwardHeaders(true);
JettyEmbeddedServletContainerFactory container = spy(new JettyEmbeddedServletContainerFactory());
this.properties.customize(container);
verify(container).setUseForwardHeaders(true);
}
private void bindProperties(Map<String, String> map) {
new RelaxedDataBinder(this.properties, "server").bind(new MutablePropertyValues(
map));

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