From e26fe5c363a5eea163635ff59352ba9cde2a855e Mon Sep 17 00:00:00 2001
From: Håkon Hallingstad <hakon@verizonmedia.com>
Date: Mon, 8 Apr 2019 11:23:51 +0200
Subject: Revert "Bjorncs/http utils"

---
 .../security/tls/https/VespaHttpClientBuilder.java | 109 +++++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 security-utils/src/main/java/com/yahoo/security/tls/https/VespaHttpClientBuilder.java

(limited to 'security-utils/src/main/java/com/yahoo/security/tls/https')

diff --git a/security-utils/src/main/java/com/yahoo/security/tls/https/VespaHttpClientBuilder.java b/security-utils/src/main/java/com/yahoo/security/tls/https/VespaHttpClientBuilder.java
new file mode 100644
index 00000000000..9fa51fc36cb
--- /dev/null
+++ b/security-utils/src/main/java/com/yahoo/security/tls/https/VespaHttpClientBuilder.java
@@ -0,0 +1,109 @@
+// Copyright 2019 Oath Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.security.tls.https;
+
+import com.yahoo.security.tls.MixedMode;
+import com.yahoo.security.tls.TlsContext;
+import com.yahoo.security.tls.TransportSecurityUtils;
+import org.apache.http.HttpRequest;
+import org.apache.http.HttpRequestInterceptor;
+import org.apache.http.client.methods.HttpRequestBase;
+import org.apache.http.client.utils.URIBuilder;
+import org.apache.http.conn.HttpClientConnectionManager;
+import org.apache.http.conn.ssl.NoopHostnameVerifier;
+import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
+import org.apache.http.impl.client.HttpClientBuilder;
+import org.apache.http.protocol.HttpContext;
+
+import javax.net.ssl.SSLParameters;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ * Http client builder for internal Vespa communications over http/https.
+ *
+ * Notes:
+ *  - hostname verification is not enabled - CN/SAN verification is assumed to be handled by the underlying x509 trust manager.
+ *  - custom connection managers must be configured through {@link #createBuilder(ConnectionManagerFactory)}. Do not call {@link HttpClientBuilder#setConnectionManager(HttpClientConnectionManager)}.
+ *
+ * @author bjorncs
+ */
+public class VespaHttpClientBuilder {
+
+    private static final Logger log = Logger.getLogger(VespaHttpClientBuilder.class.getName());
+
+    public interface ConnectionManagerFactory {
+        HttpClientConnectionManager create(SSLConnectionSocketFactory sslSocketFactory);
+    }
+
+    private VespaHttpClientBuilder() {}
+
+    public static HttpClientBuilder create() {
+        return createBuilder(null);
+    }
+
+    public static HttpClientBuilder create(ConnectionManagerFactory connectionManagerFactory) {
+        return createBuilder(connectionManagerFactory);
+    }
+
+    private static HttpClientBuilder createBuilder(ConnectionManagerFactory connectionManagerFactory) {
+        var builder = HttpClientBuilder.create();
+        addSslSocketFactory(builder, connectionManagerFactory);
+        addTlsAwareRequestInterceptor(builder);
+        return builder;
+    }
+
+    private static void addSslSocketFactory(HttpClientBuilder builder, ConnectionManagerFactory connectionManagerFactory)  {
+        TransportSecurityUtils.createTlsContext()
+                .ifPresent(tlsContext -> {
+                    log.log(Level.FINE, "Adding ssl socket factory to client");
+                    SSLConnectionSocketFactory socketFactory = createSslSocketFactory(tlsContext);
+                    if (connectionManagerFactory != null) {
+                        builder.setConnectionManager(connectionManagerFactory.create(socketFactory));
+                    } else {
+                        builder.setSSLSocketFactory(socketFactory);
+                    }
+                });
+    }
+
+    private static void addTlsAwareRequestInterceptor(HttpClientBuilder builder) {
+        if (TransportSecurityUtils.isTransportSecurityEnabled()
+                && TransportSecurityUtils.getInsecureMixedMode() != MixedMode.PLAINTEXT_CLIENT_MIXED_SERVER) {
+            log.log(Level.FINE, "Adding request interceptor to client");
+            builder.addInterceptorFirst(new HttpToHttpsRewritingRequestInterceptor());
+        }
+    }
+
+    private static SSLConnectionSocketFactory createSslSocketFactory(TlsContext tlsContext) {
+        SSLParameters parameters = tlsContext.parameters();
+        return new SSLConnectionSocketFactory(tlsContext.context(), parameters.getProtocols(), parameters.getCipherSuites(), new NoopHostnameVerifier());
+    }
+
+    static class HttpToHttpsRewritingRequestInterceptor implements HttpRequestInterceptor {
+        @Override
+        public void process(HttpRequest request, HttpContext context) {
+            if (request instanceof HttpRequestBase) {
+                HttpRequestBase httpUriRequest = (HttpRequestBase) request;
+                httpUriRequest.setURI(rewriteUri(httpUriRequest.getURI()));
+            } else {
+                log.log(Level.FINE, () -> "Not a HttpRequestBase - skipping URI rewriting: " + request.getClass().getName());
+            }
+        }
+
+        private static URI rewriteUri(URI originalUri) {
+            if (!originalUri.getScheme().equals("http")) {
+                return originalUri;
+            }
+            int port = originalUri.getPort();
+            int rewrittenPort = port != -1 ? port : 80;
+            try {
+                URI rewrittenUri = new URIBuilder(originalUri).setScheme("https").setPort(rewrittenPort).build();
+                log.log(Level.FINE, () -> String.format("Uri rewritten from '%s' to '%s'", originalUri, rewrittenUri));
+                return rewrittenUri;
+            } catch (URISyntaxException e) {
+                throw new RuntimeException(e);
+            }
+        }
+    }
+}
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