ProxyResource.java

package org.browsermob.proxy.bricks;

import com.google.inject.Inject;
import com.google.inject.name.Named;
import com.google.sitebricks.At;
import com.google.sitebricks.client.transport.Json;
import com.google.sitebricks.headless.Reply;
import com.google.sitebricks.headless.Request;
import com.google.sitebricks.headless.Service;
import com.google.sitebricks.http.Delete;
import com.google.sitebricks.http.Get;
import com.google.sitebricks.http.Post;
import com.google.sitebricks.http.Put;
import org.browsermob.core.har.Har;
import org.browsermob.proxy.ProxyManager;
import org.browsermob.proxy.ProxyServer;
import org.browsermob.proxy.http.BrowserMobHttpRequest;
import org.browsermob.proxy.http.BrowserMobHttpResponse;
import org.browsermob.proxy.http.RequestInterceptor;
import org.browsermob.proxy.http.ResponseInterceptor;
import org.browsermob.proxy.util.Log;
import org.java_bandwidthlimiter.StreamManager;

import javax.script.*;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Map;

@At("/proxy")
@Service
public class ProxyResource {
    private static final Log LOG = new Log();

    private ProxyManager proxyManager;

    @Inject
    public ProxyResource(ProxyManager proxyManager) {
        this.proxyManager = proxyManager;
    }

    @Post
    public Reply<ProxyDescriptor> newProxy(Request request) throws Exception {
        String systemProxyHost = System.getProperty("http.proxyHost");
        String systemProxyPort = System.getProperty("http.proxyPort");
        String httpProxy = request.param("httpProxy");
        Hashtable<String, String> options = new Hashtable<String, String>();

        // If the upstream proxy is specified via query params that should override any default system level proxy.
        if (httpProxy != null) {
            options.put("httpProxy", httpProxy);
        } else if ((systemProxyHost != null) && (systemProxyPort != null)) {
            options.put("httpProxy", String.format("%s:%s", systemProxyHost, systemProxyPort));
        }

        String paramPort = request.param("port");
        int port = 0;
        if (paramPort != null) {
            port = Integer.parseInt(paramPort);
            ProxyServer proxy = proxyManager.create(options, port);
        } else {
            ProxyServer proxy = proxyManager.create(options);
            port = proxy.getPort();
        }
        return Reply.with(new ProxyDescriptor(port)).as(Json.class);
    }

    @Get
    @At("/:port/har")
    public Reply<Har> getHar(@Named("port") int port) {
        ProxyServer proxy = proxyManager.get(port);
        Har har = proxy.getHar();

        return Reply.with(har).as(Json.class);
    }

    @Put
    @At("/:port/har")
    public Reply<?> newHar(@Named("port") int port, Request request) {
        String initialPageRef = request.param("initialPageRef");
        ProxyServer proxy = proxyManager.get(port);
        Har oldHar = proxy.newHar(initialPageRef);

        String captureHeaders = request.param("captureHeaders");
        String captureContent = request.param("captureContent");
        String captureBinaryContent = request.param("captureBinaryContent"); 
        proxy.setCaptureHeaders(Boolean.parseBoolean(captureHeaders));
        proxy.setCaptureContent(Boolean.parseBoolean(captureContent));
        proxy.setCaptureBinaryContent(Boolean.parseBoolean(captureBinaryContent)); 

        if (oldHar != null) {
            return Reply.with(oldHar).as(Json.class);
        } else {
            return Reply.saying().noContent();
        }
    }

    @Put
    @At("/:port/har/pageRef")
    public Reply<?> setPage(@Named("port") int port, Request request) {
        String pageRef = request.param("pageRef");
        ProxyServer proxy = proxyManager.get(port);
        proxy.newPage(pageRef);

        return Reply.saying().ok();
    }

    @Put
    @At("/:port/blacklist")
    public Reply<?> blacklist(@Named("port") int port, Request request) {
        String blacklist = request.param("regex");
        int responseCode = parseResponseCode(request.param("status"));
        ProxyServer proxy = proxyManager.get(port);
        proxy.blacklistRequests(blacklist, responseCode);

        return Reply.saying().ok();
    }

    @Put
    @At("/:port/whitelist")
    public Reply<?> whitelist(@Named("port") int port, Request request) {
        String regex = request.param("regex");
        int responseCode = parseResponseCode(request.param("status"));
        ProxyServer proxy = proxyManager.get(port);
        proxy.whitelistRequests(regex.split(","), responseCode);

        return Reply.saying().ok();
    }

    @Post
    @At("/:port/auth/basic/:domain")
    public Reply<?> autoBasicAuth(@Named("port") int port, @Named("domain") String domain, Request request) {
        Map<String, String> credentials = request.read(HashMap.class).as(Json.class);
        ProxyServer proxy = proxyManager.get(port);
        proxy.autoBasicAuthorization(domain, credentials.get("username"), credentials.get("password"));

        return Reply.saying().ok();
    }

    @Post
    @At("/:port/headers")
    public Reply<?> updateHeaders(@Named("port") int port, Request request) {
        ProxyServer proxy = proxyManager.get(port);
        Map<String, String> headers = request.read(Map.class).as(Json.class);
        for (Map.Entry<String, String> entry : headers.entrySet()) {
            String key = entry.getKey();
            String value = entry.getValue();
            proxy.addHeader(key, value);
        }
        return Reply.saying().ok();
    }

    @Post
    @At("/:port/interceptor/response")
    public Reply<?> addResponseInterceptor(@Named("port") int port, Request request) throws IOException, ScriptException {
        ProxyServer proxy = proxyManager.get(port);

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        request.readTo(baos);

        ScriptEngineManager mgr = new ScriptEngineManager();
        final ScriptEngine engine = mgr.getEngineByName("JavaScript");
        Compilable compilable = (Compilable)  engine;
        final CompiledScript script = compilable.compile(baos.toString());

        proxy.addResponseInterceptor(new ResponseInterceptor() {
            @Override
            public void process(BrowserMobHttpResponse response) {
                Bindings bindings = engine.createBindings();
                bindings.put("response", response);
                bindings.put("log", LOG);
                try {
                    script.eval(bindings);
                } catch (ScriptException e) {
                    LOG.severe("Could not execute JS-based response interceptor", e);
                }
            }
        });



        return Reply.saying().ok();
    }

    @Post
    @At("/:port/interceptor/request")
    public Reply<?> addRequestInterceptor(@Named("port") int port, Request request) throws IOException, ScriptException {
        ProxyServer proxy = proxyManager.get(port);

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        request.readTo(baos);

        ScriptEngineManager mgr = new ScriptEngineManager();
        final ScriptEngine engine = mgr.getEngineByName("JavaScript");
        Compilable compilable = (Compilable)  engine;
        final CompiledScript script = compilable.compile(baos.toString());

        proxy.addRequestInterceptor(new RequestInterceptor() {
            @Override
            public void process(BrowserMobHttpRequest request) {
                Bindings bindings = engine.createBindings();
                bindings.put("request", request);
                bindings.put("log", LOG);
                try {
                    script.eval(bindings);
                } catch (ScriptException e) {
                    LOG.severe("Could not execute JS-based response interceptor", e);
                }
            }
        });

        return Reply.saying().ok();
    }

    @Put
    @At("/:port/limit")
    public Reply<?> limit(@Named("port") int port, Request request) {
        ProxyServer proxy = proxyManager.get(port);
        StreamManager streamManager = proxy.getStreamManager();
        String upstreamKbps = request.param("upstreamKbps");
        if (upstreamKbps != null) {
            try {
                streamManager.setUpstreamKbps(Integer.parseInt(upstreamKbps));
                streamManager.enable();
            } catch (NumberFormatException e) { }
        }
        String downstreamKbps = request.param("downstreamKbps");
        if (downstreamKbps != null) {
            try {
                streamManager.setDownstreamKbps(Integer.parseInt(downstreamKbps));
                streamManager.enable();
            } catch (NumberFormatException e) { }
        }
        String latency = request.param("latency");
        if (latency != null) {
            try {
                streamManager.setLatency(Integer.parseInt(latency));
                streamManager.enable();
            } catch (NumberFormatException e) { }
        }
        String payloadPercentage = request.param("payloadPercentage");
        if (payloadPercentage != null) {
            try {
                streamManager.setPayloadPercentage(Integer.parseInt(payloadPercentage));
            } catch (NumberFormatException e) { }
        }
        String maxBitsPerSecond = request.param("maxBitsPerSecond");
        if (maxBitsPerSecond != null) {
            try {
                streamManager.setMaxBitsPerSecondThreshold(Integer.parseInt(maxBitsPerSecond));
            } catch (NumberFormatException e) { }
        }
        String enable = request.param("enable");
        if (enable != null) {
            if( Boolean.parseBoolean(enable) ) {
                streamManager.enable();
            } else {
                streamManager.disable();
            }
        }
        return Reply.saying().ok();
    }
    
    @Put
    @At("/:port/timeout")
    public Reply<?> timeout(@Named("port") int port, Request request) {
        ProxyServer proxy = proxyManager.get(port);
        String requestTimeout = request.param("requestTimeout");
        if (requestTimeout != null) {
            try {
                proxy.setRequestTimeout(Integer.parseInt(requestTimeout));
            } catch (NumberFormatException e) { }
        }
        String readTimeout = request.param("readTimeout");
        if (readTimeout != null) {
            try {
                proxy.setSocketOperationTimeout(Integer.parseInt(readTimeout));
            } catch (NumberFormatException e) { }
        }
        String connectionTimeout = request.param("connectionTimeout");
        if (connectionTimeout != null) {
            try {
                proxy.setConnectionTimeout(Integer.parseInt(connectionTimeout));
            } catch (NumberFormatException e) { }
        }
        String dnsCacheTimeout = request.param("dnsCacheTimeout");
        if (dnsCacheTimeout != null) {
            try {
                proxy.setDNSCacheTimeout(Integer.parseInt(dnsCacheTimeout));
            } catch (NumberFormatException e) { }
        }
        return Reply.saying().ok();
    }

    @Delete
    @At("/:port")
    public Reply<?> delete(@Named("port") int port) throws Exception {
        proxyManager.delete(port);
        return Reply.saying().ok();
    }

    @Post
    @At("/:port/hosts")
    public Reply<?> remapHosts(@Named("port") int port, Request request) {
        ProxyServer proxy = proxyManager.get(port);
        @SuppressWarnings("unchecked") Map<String, String> headers = request.read(Map.class).as(Json.class);

        for (Map.Entry<String, String> entry : headers.entrySet()) {
            String key = entry.getKey();
            String value = entry.getValue();
            proxy.remapHost(key, value);
            proxy.setDNSCacheTimeout(0);
            proxy.clearDNSCache();
        }

        return Reply.saying().ok();
    }


    @Put
    @At("/:port/wait")
    public Reply<?> wait(@Named("port") int port, Request request) {
        String quietPeriodInMs = request.param("quietPeriodInMs");
        String timeoutInMs = request.param("timeoutInMs");
        ProxyServer proxy = proxyManager.get(port);
        proxy.waitForNetworkTrafficToStop(Integer.parseInt(quietPeriodInMs), Integer.parseInt(timeoutInMs));
        return Reply.saying().ok();
    }
    
    @Delete
    @At("/:port/dns/cache")
    public Reply<?> clearDnsCache(@Named("port") int port) throws Exception {
    	ProxyServer proxy = proxyManager.get(port);
    	proxy.clearDNSCache();
        return Reply.saying().ok();
    }

    @Put
    @At("/:port/rewrite")
    public Reply<?> rewriteUrl(@Named("port") int port, Request request) {
        String match = request.param("matchRegex");
        String replace = request.param("replace");
        ProxyServer proxy = proxyManager.get(port);
        proxy.rewriteUrl(match, replace);
        return Reply.saying().ok();
    } 
    
    @Put
    @At("/:port/retry")
    public Reply<?> retryCount(@Named("port") int port, Request request) {
        String count = request.param("retrycount");
        ProxyServer proxy = proxyManager.get(port);
        proxy.setRetryCount(Integer.parseInt(count));
        return Reply.saying().ok();
    } 
    
    private int parseResponseCode(String response)
    {
        int responseCode = 200;
        if (response != null) {
            try {
                responseCode = Integer.parseInt(response);
            } catch (NumberFormatException e) { }
        }
        return responseCode;
    }

    public static class ProxyDescriptor {
        private int port;

        public ProxyDescriptor() {
        }

        public ProxyDescriptor(int port) {
            this.port = port;
        }

        public int getPort() {
            return port;
        }

        public void setPort(int port) {
            this.port = port;
        }
    }
}