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...c/main/scala/org/opensearch/flint/core/auth/AWSRequestSigV4ASigningApacheInterceptor.java
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|---|---|---|
| @@ -0,0 +1,228 @@ | ||
| /* | ||
| * Copyright OpenSearch Contributors | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
|
|
||
| package org.opensearch.flint.core.auth; | ||
|
|
||
| import com.amazonaws.auth.AWSSessionCredentials; | ||
| import com.amazonaws.auth.AWSCredentialsProvider; | ||
| import com.amazonaws.services.glue.model.InvalidStateException; | ||
| import org.apache.http.Header; | ||
| import org.apache.http.HttpEntity; | ||
| import org.apache.http.HttpEntityEnclosingRequest; | ||
| import org.apache.http.HttpHost; | ||
| import org.apache.http.HttpRequest; | ||
| import org.apache.http.HttpRequestInterceptor; | ||
| import org.apache.http.client.utils.URIBuilder; | ||
| import org.apache.http.entity.BasicHttpEntity; | ||
| import org.apache.http.message.BasicHeader; | ||
| import org.apache.http.protocol.HttpContext; | ||
| import software.amazon.awssdk.auth.credentials.AwsSessionCredentials; | ||
| import software.amazon.awssdk.auth.signer.AwsSignerExecutionAttribute; | ||
| import software.amazon.awssdk.core.interceptor.ExecutionAttributes; | ||
| import software.amazon.awssdk.core.signer.Signer; | ||
| import software.amazon.awssdk.http.SdkHttpFullRequest; | ||
| import software.amazon.awssdk.http.SdkHttpMethod; | ||
| import software.amazon.awssdk.regions.Region; | ||
|
|
||
| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.io.UncheckedIOException; | ||
| import java.net.URISyntaxException; | ||
| import java.util.ArrayList; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.TreeMap; | ||
|
|
||
| import static org.apache.http.protocol.HttpCoreContext.HTTP_TARGET_HOST; | ||
| import static org.opensearch.flint.core.auth.AWSRequestSigningApacheInterceptor.nvpToMapParams; | ||
| import static org.opensearch.flint.core.auth.AWSRequestSigningApacheInterceptor.skipHeader; | ||
|
|
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| /** | ||
| * Interceptor for signing AWS requests according to Signature Version 4A. | ||
| * This interceptor processes HTTP requests, signs them with AWS credentials, | ||
| * and updates the request headers to include the signature. | ||
| */ | ||
| public class AWSRequestSigV4ASigningApacheInterceptor implements HttpRequestInterceptor { | ||
| private static final String HTTPS_PROTOCOL = "https"; | ||
| private static final int HTTPS_PORT = 443; | ||
|
|
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| private final String service; | ||
| private final String region; | ||
| private final Signer signer; | ||
| private final AWSCredentialsProvider awsCredentialsProvider; | ||
|
|
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| /** | ||
| * Constructs an interceptor for AWS request signing with metadata access. | ||
| * | ||
| * @param service The AWS service name. | ||
| * @param region The AWS region for signing. | ||
| * @param signer The signer implementation. | ||
| * @param awsCredentialsProvider The credentials provider for metadata access. | ||
| */ | ||
| public AWSRequestSigV4ASigningApacheInterceptor(String service, String region, Signer signer, AWSCredentialsProvider awsCredentialsProvider) { | ||
| this.service = service; | ||
| this.region = region; | ||
| this.signer = signer; | ||
| this.awsCredentialsProvider = awsCredentialsProvider; | ||
| } | ||
|
|
||
| /** | ||
| * Processes and signs an HTTP request, updating its headers with the signature. | ||
| * | ||
| * @param request the HTTP request to process and sign. | ||
| * @param context the HTTP context associated with the request. | ||
| * @throws IOException if an I/O error occurs during request processing. | ||
| */ | ||
| @Override | ||
| public void process(HttpRequest request, HttpContext context) throws IOException { | ||
| SdkHttpFullRequest requestToSign = buildSdkHttpRequest(request, context); | ||
| SdkHttpFullRequest signedRequest = signRequest(requestToSign); | ||
| updateRequestHeaders(request, signedRequest.headers()); | ||
| updateRequestEntity(request, signedRequest); | ||
| } | ||
|
|
||
| /** | ||
| * Builds an {@link SdkHttpFullRequest} from the Apache {@link HttpRequest}. | ||
| * | ||
| * @param request the HTTP request to process and sign. | ||
| * @param context the HTTP context associated with the request. | ||
| * @return an SDK HTTP request ready to be signed. | ||
| * @throws IOException if an error occurs while building the request. | ||
| */ | ||
| private SdkHttpFullRequest buildSdkHttpRequest(HttpRequest request, HttpContext context) throws IOException { | ||
| URIBuilder uriBuilder = parseUri(request); | ||
| SdkHttpFullRequest.Builder builder = SdkHttpFullRequest.builder() | ||
| .method(SdkHttpMethod.fromValue(request.getRequestLine().getMethod())) | ||
| .protocol(HTTPS_PROTOCOL) | ||
| .port(HTTPS_PORT) | ||
| .headers(headerArrayToMap(request.getAllHeaders())) | ||
| .rawQueryParameters(nvpToMapParams(uriBuilder.getQueryParams())); | ||
|
|
||
| HttpHost host = (HttpHost) context.getAttribute(HTTP_TARGET_HOST); | ||
| if (host == null) { | ||
| throw new InvalidStateException("Host must not be null"); | ||
| } | ||
| builder.host(host.getHostName()); | ||
| try { | ||
| builder.encodedPath(uriBuilder.build().getRawPath()); | ||
| } catch (URISyntaxException e) { | ||
| throw new IOException("Invalid URI", e); | ||
| } | ||
| setRequestEntity(request, builder); | ||
| return builder.build(); | ||
| } | ||
|
|
||
| /** | ||
| * Sets the request entity for the {@link SdkHttpFullRequest.Builder} if the original request contains an entity. | ||
| * This is used for requests that have a body, such as POST or PUT requests. | ||
| * | ||
| * @param request the original HTTP request. | ||
| * @param builder the SDK HTTP request builder. | ||
| */ | ||
| private void setRequestEntity(HttpRequest request, SdkHttpFullRequest.Builder builder) { | ||
| if (request instanceof HttpEntityEnclosingRequest) { | ||
| HttpEntity entity = ((HttpEntityEnclosingRequest) request).getEntity(); | ||
| if (entity != null) { | ||
| builder.contentStreamProvider(() -> { | ||
| try { | ||
| return entity.getContent(); | ||
| } catch (IOException e) { | ||
| throw new UncheckedIOException(e); | ||
| } | ||
| }); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| private URIBuilder parseUri(HttpRequest request) throws IOException { | ||
| try { | ||
| return new URIBuilder(request.getRequestLine().getUri()); | ||
| } catch (URISyntaxException e) { | ||
| throw new IOException("Invalid URI", e); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Signs the given SDK HTTP request using the provided AWS credentials and signer. | ||
| * | ||
| * @param request the SDK HTTP request to sign. | ||
| * @return a signed SDK HTTP request. | ||
| */ | ||
| private SdkHttpFullRequest signRequest(SdkHttpFullRequest request) { | ||
| AWSSessionCredentials sessionCredentials = (AWSSessionCredentials) awsCredentialsProvider.getCredentials(); | ||
| AwsSessionCredentials awsCredentials = AwsSessionCredentials.create( | ||
| sessionCredentials.getAWSAccessKeyId(), | ||
| sessionCredentials.getAWSSecretKey(), | ||
| sessionCredentials.getSessionToken() | ||
| ); | ||
|
|
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| ExecutionAttributes executionAttributes = new ExecutionAttributes() | ||
| .putAttribute(AwsSignerExecutionAttribute.AWS_CREDENTIALS, awsCredentials) | ||
| .putAttribute(AwsSignerExecutionAttribute.SERVICE_SIGNING_NAME, service) | ||
| .putAttribute(AwsSignerExecutionAttribute.SIGNING_REGION, Region.of(region)); | ||
|
|
||
| return signer.sign(request, executionAttributes); | ||
| } | ||
|
|
||
| /** | ||
| * Updates the HTTP request headers with the signed headers. | ||
| * | ||
| * @param request the original HTTP request. | ||
| * @param signedHeaders the headers after signing. | ||
| */ | ||
| private void updateRequestHeaders(HttpRequest request, Map<String, List<String>> signedHeaders) { | ||
| Header[] headers = convertHeaderMapToArray(signedHeaders); | ||
| request.setHeaders(headers); | ||
| } | ||
|
|
||
| /** | ||
| * Updates the request entity based on the signed request. This is used to update the request body after signing. | ||
| * | ||
| * @param request the original HTTP request. | ||
| * @param signedRequest the signed SDK HTTP request. | ||
| */ | ||
| private void updateRequestEntity(HttpRequest request, SdkHttpFullRequest signedRequest) { | ||
| if (request instanceof HttpEntityEnclosingRequest) { | ||
| HttpEntityEnclosingRequest httpEntityEnclosingRequest = (HttpEntityEnclosingRequest) request; | ||
| signedRequest.contentStreamProvider().ifPresent(provider -> { | ||
| InputStream contentStream = provider.newStream(); | ||
| BasicHttpEntity basicHttpEntity = new BasicHttpEntity(); | ||
| basicHttpEntity.setContent(contentStream); | ||
| signedRequest.firstMatchingHeader("Content-Length").ifPresent(value -> | ||
| basicHttpEntity.setContentLength(Long.parseLong(value))); | ||
| signedRequest.firstMatchingHeader("Content-Type").ifPresent(basicHttpEntity::setContentType); | ||
| httpEntityEnclosingRequest.setEntity(basicHttpEntity); | ||
| }); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Converts an array of {@link Header} objects into a map, consolidating multiple values for the same header name. | ||
| * | ||
| * @param headers the array of {@link Header} objects to convert. | ||
| * @return a map where each key is a header name and each value is a list of header values. | ||
| */ | ||
| private static Map<String, List<String>> headerArrayToMap(final Header[] headers) { | ||
| Map<String, List<String>> headersMap = new TreeMap<>(String.CASE_INSENSITIVE_ORDER); | ||
| for (Header header : headers) { | ||
| if (!skipHeader(header)) { | ||
| headersMap.computeIfAbsent(header.getName(), k -> new ArrayList<>()).add(header.getValue()); | ||
| } | ||
| } | ||
| return headersMap; | ||
| } | ||
|
|
||
| /** | ||
| * Converts a map of headers back into an array of {@link Header} objects. | ||
| * | ||
| * @param mapHeaders the map of headers to convert. | ||
| * @return an array of {@link Header} objects. | ||
| */ | ||
| private Header[] convertHeaderMapToArray(final Map<String, List<String>> mapHeaders) { | ||
| return mapHeaders.entrySet().stream() | ||
| .map(entry -> new BasicHeader(entry.getKey(), String.join(",", entry.getValue()))) | ||
| .toArray(Header[]::new); | ||
| } | ||
| } |
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