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// 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.TransportSecurityUtils;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.http.HttpClient;
import java.net.http.HttpHeaders;
import java.net.http.HttpRequest;
import java.time.Duration;
import java.util.HashMap;
import java.util.List;
import java.util.Optional;
/**
* A {@link HttpRequest} where the scheme is either http or https based on the global Vespa TLS configuration.
*
* @author bjorncs
*/
class TlsAwareHttpRequest extends HttpRequest {
private final URI rewrittenUri;
private final HttpRequest wrappedRequest;
private final HttpHeaders rewrittenHeaders;
TlsAwareHttpRequest(HttpRequest wrappedRequest, String userAgent) {
this.wrappedRequest = wrappedRequest;
this.rewrittenUri = rewriteUri(wrappedRequest.uri());
this.rewrittenHeaders = rewriteHeaders(wrappedRequest, userAgent);
}
@Override
public Optional<BodyPublisher> bodyPublisher() {
return wrappedRequest.bodyPublisher();
}
@Override
public String method() {
return wrappedRequest.method();
}
@Override
public Optional<Duration> timeout() {
return wrappedRequest.timeout();
}
@Override
public boolean expectContinue() {
return wrappedRequest.expectContinue();
}
@Override
public URI uri() {
return rewrittenUri;
}
@Override
public Optional<HttpClient.Version> version() {
return wrappedRequest.version();
}
@Override
public HttpHeaders headers() {
return rewrittenHeaders;
}
private static URI rewriteUri(URI uri) {
if (!uri.getScheme().equals("http")) {
return uri;
}
String rewrittenScheme =
TransportSecurityUtils.getConfigFile().isPresent() && TransportSecurityUtils.getInsecureMixedMode() != MixedMode.PLAINTEXT_CLIENT_MIXED_SERVER ?
"https" :
"http";
int port = uri.getPort();
int rewrittenPort = port != -1 ? port : (rewrittenScheme.equals("http") ? 80 : 443);
try {
return new URI(rewrittenScheme, uri.getUserInfo(), uri.getHost(), rewrittenPort, uri.getPath(), uri.getQuery(), uri.getFragment());
} catch (URISyntaxException e) {
throw new RuntimeException(e);
}
}
private static HttpHeaders rewriteHeaders(HttpRequest request, String userAgent) {
HttpHeaders headers = request.headers();
if (headers.firstValue("User-Agent").isPresent()) {
return headers;
}
HashMap<String, List<String>> rewrittenHeaders = new HashMap<>(headers.map());
rewrittenHeaders.put("User-Agent", List.of(userAgent));
return HttpHeaders.of(rewrittenHeaders, (ignored1, ignored2) -> true);
}
@Override
public String toString() {
return "TlsAwareHttpRequest{" +
"rewrittenUri=" + rewrittenUri +
", wrappedRequest=" + wrappedRequest +
'}';
}
}
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