/*
SOURCE: https://raw.github.com/lightbody/browsermob-proxy/7f0a6ec2663bace3f64c878e7f006090c38fbfdc/src/main/java/net/lightbody/bmp/proxy/BrowserMobProxyHandler.java
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package com.groupon.odo.bmp;
import com.groupon.odo.proxylib.Constants;
import com.groupon.odo.proxylib.ServerRedirectService;
import java.io.File;
import java.io.IOException;
import java.net.BindException;
import java.net.ConnectException;
import java.net.InetAddress;
import java.net.Socket;
import java.net.URL;
import java.net.UnknownHostException;
import java.security.cert.X509Certificate;
import java.util.Date;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Set;
import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.Response;
import com.squareup.okhttp.RequestBody;
import com.squareup.okhttp.MediaType;
import net.lightbody.bmp.proxy.FirefoxErrorConstants;
import net.lightbody.bmp.proxy.FirefoxErrorContent;
import net.lightbody.bmp.proxy.http.BadURIException;
import net.lightbody.bmp.proxy.jetty.http.EOFException;
import net.lightbody.bmp.proxy.jetty.http.HttpConnection;
import net.lightbody.bmp.proxy.jetty.http.HttpException;
import net.lightbody.bmp.proxy.jetty.http.HttpFields;
import net.lightbody.bmp.proxy.jetty.http.HttpListener;
import net.lightbody.bmp.proxy.jetty.http.HttpMessage;
import net.lightbody.bmp.proxy.jetty.http.HttpRequest;
import net.lightbody.bmp.proxy.jetty.http.HttpResponse;
import net.lightbody.bmp.proxy.jetty.http.HttpServer;
import net.lightbody.bmp.proxy.jetty.http.HttpTunnel;
import net.lightbody.bmp.proxy.jetty.http.SocketListener;
import net.lightbody.bmp.proxy.jetty.http.SslListener;
import net.lightbody.bmp.proxy.jetty.jetty.Server;
import net.lightbody.bmp.proxy.jetty.util.InetAddrPort;
import net.lightbody.bmp.proxy.jetty.util.URI;
import net.lightbody.bmp.proxy.selenium.KeyStoreManager;
import net.lightbody.bmp.proxy.selenium.LauncherUtils;
import net.lightbody.bmp.proxy.selenium.SeleniumProxyHandler;
import net.lightbody.bmp.proxy.util.Log;
import okio.BufferedSink;
import org.apache.commons.io.IOUtils;
import org.apache.http.NoHttpResponseException;
import org.apache.http.conn.ConnectTimeoutException;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLProtocolException;
import java.security.cert.CertificateException;
public class BrowserMobProxyHandler extends SeleniumProxyHandler {
private static final Log LOG = new Log();
private static final int HEADER_BUFFER_DEFAULT = 2;
private static final long serialVersionUID = 1L;
private final String localIP = "127.0.0.1";
private Server jettyServer;
private int headerBufferMultiplier = HEADER_BUFFER_DEFAULT;
protected final Set<SslRelay> sslRelays = new HashSet<SslRelay>();
// BEGIN ODO CHANGES
// Map to hold onto listeners per hostname
protected final Map<String, SslRelayOdo> _sslMap = new LinkedHashMap<String, SslRelayOdo>();
protected final Map<String, Date> _certExpirationMap = new LinkedHashMap<String, Date>();
// END ODO CHANGES
public BrowserMobProxyHandler() {
super(true, "", "", false, false);
setShutdownLock(new Object());
// set the tunnel timeout to something larger than the default 30 seconds
// we're doing this because SSL connections taking longer than this timeout
// will result in a socket connection close that does NOT get handled by the
// normal socket connection closing reportError(). Further, it has been seen
// that Firefox will actually retry the connection, causing very strange
// behavior observed in case http://browsermob.assistly.com/agent/case/27843
//
// You can also reproduce it by simply finding some slow loading SSL site
// that takes greater than 30 seconds to response.
//
// Finally, it should be noted that we're setting this timeout to some value
// that we anticipate will be larger than any reasonable response time of a
// real world request. We don't set it to -1 because the underlying ProxyHandler
// will not use it if it's <= 0. We also don't set it to Long.MAX_VALUE because
// we don't yet know if this will cause a serious resource drain, so we're
// going to try something like 5 minutes for now.
setTunnelTimeoutMs(300000);
}
// BEGIN ODO CHANGES
private static final ThreadLocal<String> requestOriginalHostName = new ThreadLocal<String>();
private static final ThreadLocal<URI> requestOriginalURI = new ThreadLocal<URI>();
@Override
/**
* This is the original handleConnect from BrowserMobProxyHandler with the following changes:
*
* 1. Store the original URI in a ThreadLocal so that we can determine the host addr later
* 2. Store the original hostname in a ThreadLocal so we don't need to do the same string processing again later
* 2. Set the URI to 127.0.0.1 to pass into Odo
* 3. Call the original handleConnect from SeleniumProxyHandler(copied to handle an Odo SslRelay)
*/
public void handleConnect(String pathInContext, String pathParams, HttpRequest request, HttpResponse response) throws HttpException, IOException {
URI uri = request.getURI();
String original = uri.toString();
LOG.info("Hostname: " + original);
String host = original;
int colon = original.indexOf(':');
if (colon != -1) {
host = original.substring(0, colon);
}
// store the original host name
requestOriginalHostName.set(host);
// make a copy of the URI(have to create a new URI otherwise things are copied by reference and get changed)
URI realURI = new URI(request.getURI());
requestOriginalURI.set(realURI);
// send requests to Odo HTTPS port
int httpsPort = com.groupon.odo.proxylib.Utils.getSystemPort(Constants.SYS_HTTPS_PORT);
uri.setURI("127.0.0.1:" + httpsPort);
uri.setPort(httpsPort);
handleConnectOriginal(pathInContext, pathParams, request, response);
}
// END ODO CHANGES
// BEGIN ODO CHANGES
/**
* Copied from original SeleniumProxyHandler
* Changed SslRelay to SslListener and getSslRelayOrCreateNew to getSslRelayOrCreateNewOdo
* No other changes to the function
*
* @param pathInContext
* @param pathParams
* @param request
* @param response
* @throws HttpException
* @throws IOException
*/
public void handleConnectOriginal(String pathInContext, String pathParams, HttpRequest request, HttpResponse response) throws HttpException, IOException {
URI uri = request.getURI();
try {
LOG.fine("CONNECT: " + uri);
InetAddrPort addrPort;
// When logging, we'll attempt to send messages to hosts that don't exist
if (uri.toString().endsWith(".selenium.doesnotexist:443")) {
// so we have to do set the host to be localhost (you can't new up an IAP with a non-existent hostname)
addrPort = new InetAddrPort(443);
} else {
addrPort = new InetAddrPort(uri.toString());
}
if (isForbidden(HttpMessage.__SSL_SCHEME, addrPort.getHost(), addrPort.getPort(), false)) {
sendForbid(request, response, uri);
} else {
HttpConnection http_connection = request.getHttpConnection();
http_connection.forceClose();
HttpServer server = http_connection.getHttpServer();
SslListener listener = getSslRelayOrCreateNewOdo(uri, addrPort, server);
int port = listener.getPort();
// Get the timeout
int timeoutMs = 30000;
Object maybesocket = http_connection.getConnection();
if (maybesocket instanceof Socket) {
Socket s = (Socket) maybesocket;
timeoutMs = s.getSoTimeout();
}
// Create the tunnel
HttpTunnel tunnel = newHttpTunnel(request, response, InetAddress.getByName(null), port, timeoutMs);
if (tunnel != null) {
// TODO - need to setup semi-busy loop for IE.
if (_tunnelTimeoutMs > 0) {
tunnel.getSocket().setSoTimeout(_tunnelTimeoutMs);
if (maybesocket instanceof Socket) {
Socket s = (Socket) maybesocket;
s.setSoTimeout(_tunnelTimeoutMs);
}
}
tunnel.setTimeoutMs(timeoutMs);
customizeConnection(pathInContext, pathParams, request, tunnel.getSocket());
request.getHttpConnection().setHttpTunnel(tunnel);
response.setStatus(HttpResponse.__200_OK);
response.setContentLength(0);
}
request.setHandled(true);
}
} catch (Exception e) {
LOG.fine("error during handleConnect", e);
response.sendError(HttpResponse.__500_Internal_Server_Error, e.toString());
}
}
// END ODO CHANGES
// BEGIN ODO CHANGES
/**
* This function wires up a SSL Listener with the cyber villians root CA and cert with the correct CNAME for the request
*
* @param host
* @param listener
*/
protected X509Certificate wireUpSslWithCyberVilliansCAOdo(String host, SslListener listener) {
host = requestOriginalHostName.get();
// Add cybervillians CA(from browsermob)
try {
// see https://github.com/webmetrics/browsermob-proxy/issues/105
String escapedHost = host.replace('*', '_');
KeyStoreManager keyStoreManager = Utils.getKeyStoreManager(escapedHost);
keyStoreManager.getKeyStore().deleteEntry(KeyStoreManager._caPrivKeyAlias);
keyStoreManager.persist();
listener.setKeystore(new File("seleniumSslSupport" + File.separator + escapedHost + File.separator + "cybervillainsCA.jks").getAbsolutePath());
return keyStoreManager.getCertificateByAlias(escapedHost);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private SslRelayOdo getSslRelayOrCreateNewOdo(URI uri, InetAddrPort addrPort, HttpServer server) throws Exception {
URI realURI = requestOriginalURI.get();
InetAddrPort realPort = new InetAddrPort(realURI.toString());
LOG.info("GETSSLRELAY: {}, {}", realURI, realPort);
String host = new URL("https://" + realURI.toString()).getHost();
// create a host and port string so the listener sslMap can be keyed off the combination
String hostAndPort = host.concat(String.valueOf(realPort.getPort()));
LOG.info("getSSLRelay host: {}", hostAndPort);
SslRelayOdo listener = null;
synchronized (_sslMap) {
listener = _sslMap.get(hostAndPort);
// check the certificate expiration to see if we need to reload it
if (listener != null) {
Date exprDate = _certExpirationMap.get(hostAndPort);
if (exprDate.before(new Date())) {
// destroy the listener
if (listener.getHttpServer() != null && listener.isStarted()) {
listener.getHttpServer().removeListener(listener);
}
listener = null;
}
}
// create the listener if it didn't exist
if (listener == null) {
listener = new SslRelayOdo(addrPort);
listener.setNukeDirOrFile(null);
_certExpirationMap.put(hostAndPort, wireUpSslWithCyberVilliansCAOdo(host, listener).getNotAfter());
listener.setPassword("password");
listener.setKeyPassword("password");
if (!listener.isStarted()) {
server.addListener(listener);
startRelayWithPortTollerance(server, listener, 1);
}
_sslMap.put(hostAndPort, listener);
}
}
return listener;
}
// END ODO CHANGES
// BEGIN ODO CHANGES
// Changed method signature from SslRelay to SslListener
// END ODO CHANGES
private void startRelayWithPortTollerance(HttpServer server, SslListener relay, int tries) throws Exception {
if (tries >= 5) {
throw new BindException("Unable to bind to several ports, most recently " + relay.getPort() + ". Giving up");
}
try {
if (server.isStarted()) {
relay.start();
} else {
throw new RuntimeException("Can't start SslRelay: server is not started (perhaps it was just shut down?)");
}
} catch (BindException e) {
// doh - the port is being used up, let's pick a new port
LOG.info("Unable to bind to port %d, going to try port %d now", relay.getPort(), relay.getPort() + 1);
relay.setPort(relay.getPort() + 1);
startRelayWithPortTollerance(server, relay, tries + 1);
}
}
@Override
protected HttpTunnel newHttpTunnel(HttpRequest httpRequest, HttpResponse httpResponse, InetAddress inetAddress, int i, int i1) throws IOException {
// we're opening up a new tunnel, so let's make sure that the associated SslRelay (which may or may not be new) has the proper buffer settings
adjustListenerBuffers();
return super.newHttpTunnel(httpRequest, httpResponse, inetAddress, i, i1);
}
/**
* Returns a OkHttpClient that ignores SSL cert errors
* @return
*/
private static OkHttpClient getUnsafeOkHttpClient() {
try {
// Create a trust manager that does not validate certificate chains
final TrustManager[] trustAllCerts = new TrustManager[] {
new X509TrustManager() {
@Override
public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
}
@Override
public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
}
@Override
public java.security.cert.X509Certificate[] getAcceptedIssuers() {
return null;
}
}
};
// Install the all-trusting trust manager
final SSLContext sslContext = SSLContext.getInstance("SSL");
sslContext.init(null, trustAllCerts, new java.security.SecureRandom());
// Create an ssl socket factory with our all-trusting manager
final SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();
OkHttpClient okHttpClient = new OkHttpClient();
okHttpClient.setSslSocketFactory(sslSocketFactory);
okHttpClient.setHostnameVerifier(new HostnameVerifier() {
@Override
public boolean verify(String hostname, SSLSession session) {
return true;
}
});
return okHttpClient;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
// ODO VERSION
protected long proxyPlainTextRequest(final URL url, String pathInContext, String pathParams, HttpRequest request, final HttpResponse response) throws IOException {
try {
String urlStr = url.toString();
if (urlStr.toLowerCase().startsWith(Constants.ODO_INTERNAL_WEBAPP_URL)) {
urlStr = "http://localhost:" + com.groupon.odo.proxylib.Utils.getSystemPort(Constants.SYS_HTTP_PORT) + "/odo";
}
// setup okhttp to ignore ssl issues
OkHttpClient okHttpClient = getUnsafeOkHttpClient();
okHttpClient.setFollowRedirects(false);
okHttpClient.setFollowSslRedirects(false);
Request.Builder okRequestBuilder = new Request.Builder();
/*
* urlStr.indexOf(":") == urlStr.lastIndexOf(":") verifies that the url does not have a port
* by checking it only has a : as part of http://
*/
if (urlStr.startsWith("http://") && urlStr.indexOf(":") == urlStr.lastIndexOf(":")) {
int httpPort = com.groupon.odo.proxylib.Utils.getSystemPort(Constants.SYS_HTTP_PORT);
urlStr = urlStr.replace(getHostNameFromURL(urlStr), localIP + ":" + httpPort);
}
okRequestBuilder = okRequestBuilder.url(urlStr);
// copy request headers
Enumeration<?> enm = request.getFieldNames();
boolean isGet = "GET".equals(request.getMethod());
boolean hasContent = false;
boolean usedContentLength = false;
long contentLength = 0;
while (enm.hasMoreElements()) {
String hdr = (String) enm.nextElement();
if (!isGet && HttpFields.__ContentType.equals(hdr)) {
hasContent = true;
}
if (!isGet && HttpFields.__ContentLength.equals(hdr)) {
contentLength = Long.parseLong(request.getField(hdr));
usedContentLength = true;
}
Enumeration<?> vals = request.getFieldValues(hdr);
while (vals.hasMoreElements()) {
String val = (String) vals.nextElement();
if (val != null) {
if (!isGet && HttpFields.__ContentLength.equals(hdr) && Integer.parseInt(val) > 0) {
hasContent = true;
}
if (!_DontProxyHeaders.containsKey(hdr)) {
okRequestBuilder = okRequestBuilder.addHeader(hdr, val);
//httpReq.addRequestHeader(hdr, val);
}
}
}
}
if ("GET".equals(request.getMethod())) {
// don't need to do anything else
} else if ("POST".equals(request.getMethod()) ||
"PUT".equals(request.getMethod()) ||
"DELETE".equals(request.getMethod())) {
RequestBody okRequestBody = null;
if (hasContent) {
final String contentType = request.getContentType();
final byte[] bytes = IOUtils.toByteArray(request.getInputStream());
okRequestBody = new RequestBody() {
@Override
public MediaType contentType() {
MediaType.parse(contentType);
return null;
}
@Override
public void writeTo(BufferedSink bufferedSink) throws IOException {
bufferedSink.write(bytes);
}
};
// we need to add some ODO specific headers to give ODO a hint for content-length vs transfer-encoding
// since okHTTP will automatically chunk even if the request was not chunked
// this allows Odo to set the appropriate headers when the server request is made
if (usedContentLength) {
okRequestBuilder = okRequestBuilder.addHeader("ODO-POST-TYPE", "content-length:" + contentLength);
}
} else {
okRequestBody = RequestBody.create(null, new byte[0]);
}
if ("POST".equals(request.getMethod())) {
okRequestBuilder = okRequestBuilder.post(okRequestBody);
} else if ("PUT".equals(request.getMethod())) {
okRequestBuilder = okRequestBuilder.put(okRequestBody);
} else if ("DELETE".equals(request.getMethod())) {
okRequestBuilder = okRequestBuilder.delete(okRequestBody);
}
} else if ("OPTIONS".equals(request.getMethod())) {
// NOT SUPPORTED
} else if ("HEAD".equals(request.getMethod())) {
okRequestBuilder = okRequestBuilder.head();
} else {
LOG.warn("Unexpected request method %s, giving up", request.getMethod());
request.setHandled(true);
return -1;
}
Request okRequest = okRequestBuilder.build();
Response okResponse = okHttpClient.newCall(okRequest).execute();
// Set status and response message
response.setStatus(okResponse.code());
response.setReason(okResponse.message());
// copy response headers
for (int headerNum = 0; headerNum < okResponse.headers().size(); headerNum++) {
String headerName = okResponse.headers().name(headerNum);
if (!_DontProxyHeaders.containsKey(headerName) && !_ProxyAuthHeaders.containsKey(headerName)) {
response.addField(headerName, okResponse.headers().value(headerNum));
}
}
// write output to response output stream
try {
IOUtils.copy(okResponse.body().byteStream(), response.getOutputStream());
} catch (Exception e) {
// ignoring this until we refactor the proxy
// The copy occasionally fails due to an issue where okResponse has more data in the body than it's supposed to
// The client still gets all of the data it was expecting
}
request.setHandled(true);
return okResponse.body().contentLength();
} catch (Exception e) {
LOG.warn("Caught exception proxying: ", e);
reportError(e, url, response);
request.setHandled(true);
return -1;
}
}
private static void reportError(Exception e, URL url, HttpResponse response) {
FirefoxErrorContent error = FirefoxErrorContent.GENERIC;
if (e instanceof UnknownHostException) {
error = FirefoxErrorContent.DNS_NOT_FOUND;
} else if (e instanceof ConnectException) {
error = FirefoxErrorContent.CONN_FAILURE;
} else if (e instanceof ConnectTimeoutException) {
error = FirefoxErrorContent.NET_TIMEOUT;
} else if (e instanceof NoHttpResponseException) {
error = FirefoxErrorContent.NET_RESET;
} else if (e instanceof EOFException) {
error = FirefoxErrorContent.NET_INTERRUPT;
} else if (e instanceof IllegalArgumentException && e.getMessage().startsWith("Host name may not be null")) {
error = FirefoxErrorContent.DNS_NOT_FOUND;
} else if (e instanceof BadURIException) {
error = FirefoxErrorContent.MALFORMED_URI;
} else if (e instanceof SSLProtocolException) {
return;
}
String shortDesc = String.format(error.getShortDesc(), url.getHost());
String text = String.format(FirefoxErrorConstants.ERROR_PAGE, error.getTitle(), shortDesc, error.getLongDesc());
try {
response.setStatus(HttpResponse.__502_Bad_Gateway);
response.setContentLength(text.length());
response.getOutputStream().write(text.getBytes());
} catch (IOException e1) {
LOG.warn("IOException while trying to report an HTTP error");
}
}
public void setJettyServer(Server jettyServer) {
this.jettyServer = jettyServer;
}
public void adjustListenerBuffers() {
// configure the listeners to have larger buffers. We do this because we've seen cases where the header is
// too large. Normally this would happen on "meaningless" JS includes for ad networks, but we eventually saw
// it in a way that caused a Selenium script not to work due to too many headers (see tom.schwenk@musictoday.com)
HttpListener[] listeners = jettyServer.getListeners();
for (HttpListener listener : listeners) {
if (listener instanceof SocketListener) {
SocketListener sl = (SocketListener) listener;
if (sl.getBufferReserve() != 512 * headerBufferMultiplier) {
sl.setBufferReserve(512 * headerBufferMultiplier);
}
if (sl.getBufferSize() != 8192 * headerBufferMultiplier) {
sl.setBufferSize(8192 * headerBufferMultiplier);
}
}
}
}
// BEGIN ODO CHANGES
/**
* Cleanup function to remove all allocated listeners
*/
public void cleanup() {
synchronized (_sslMap) {
for (SslRelayOdo relay : _sslMap.values()) {
if (relay.getHttpServer() != null && relay.isStarted()) {
relay.getHttpServer().removeListener(relay);
}
}
sslRelays.clear();
}
}
// END ODO CHANGES
// BEGIN ODO CHANGES
// Copied from SeleniumProxyHandler(renamed to SslRelayOdo from SslRelay; no other changes)
public static class SslRelayOdo extends SslListener {
InetAddrPort _addr;
File nukeDirOrFile;
private static final long serialVersionUID = 1L;
SslRelayOdo(InetAddrPort addr) {
_addr = addr;
}
public void setNukeDirOrFile(File nukeDirOrFile) {
this.nukeDirOrFile = nukeDirOrFile;
}
protected void customizeRequest(Socket socket, HttpRequest request) {
super.customizeRequest(socket, request);
URI uri = request.getURI();
// Convert the URI to a proxy URL
//
// NOTE: Don't just add a host + port to the request URI, since this causes the URI to
// get "dirty" and be rewritten, potentially breaking the proxy slightly. Instead,
// create a brand new URI that includes the protocol, the host, and the port, but leaves
// intact the path + query string "as is" so that it does not get rewritten.
request.setURI(new URI("https://" + _addr.getHost() + ":" + _addr.getPort() + uri.toString()));
}
public void stop() throws InterruptedException {
super.stop();
if (nukeDirOrFile != null) {
if (nukeDirOrFile.isDirectory()) {
LauncherUtils.recursivelyDeleteDir(nukeDirOrFile);
} else {
nukeDirOrFile.delete();
}
}
}
}
/**
* @param url full url containing hostname
* @return hostname
*/
public static String getHostNameFromURL(String url) {
int urlLeftPos = url.indexOf("//");
String hostName = url.substring(urlLeftPos + 2);
int urlRightPos = hostName.indexOf("/");
if (urlRightPos != -1) {
hostName = hostName.substring(0, urlRightPos);
}
// now look for a port
int portPos = hostName.indexOf(":");
if (portPos != -1) {
hostName = hostName.substring(0, portPos);
}
return hostName;
}
// END ODO CHANGES
}