Initial

resources/app/node_modules/@aws-sdk/middleware-flexible-checksums/dist-es/configuration.js

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+export {};

resources/app/node_modules/@aws-sdk/middleware-flexible-checksums/dist-es/constants.js

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+export var ChecksumAlgorithm;
+(function (ChecksumAlgorithm) {
+    ChecksumAlgorithm["MD5"] = "MD5";
+    ChecksumAlgorithm["CRC32"] = "CRC32";
+    ChecksumAlgorithm["CRC32C"] = "CRC32C";
+    ChecksumAlgorithm["SHA1"] = "SHA1";
+    ChecksumAlgorithm["SHA256"] = "SHA256";
+})(ChecksumAlgorithm || (ChecksumAlgorithm = {}));
+export var ChecksumLocation;
+(function (ChecksumLocation) {
+    ChecksumLocation["HEADER"] = "header";
+    ChecksumLocation["TRAILER"] = "trailer";
+})(ChecksumLocation || (ChecksumLocation = {}));
+export const DEFAULT_CHECKSUM_ALGORITHM = ChecksumAlgorithm.MD5;
+export const S3_EXPRESS_DEFAULT_CHECKSUM_ALGORITHM = ChecksumAlgorithm.CRC32;

resources/app/node_modules/@aws-sdk/middleware-flexible-checksums/dist-es/flexibleChecksumsMiddleware.js

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+import { HttpRequest } from "@smithy/protocol-http";
+import { getChecksumAlgorithmForRequest } from "./getChecksumAlgorithmForRequest";
+import { getChecksumLocationName } from "./getChecksumLocationName";
+import { hasHeader } from "./hasHeader";
+import { isStreaming } from "./isStreaming";
+import { selectChecksumAlgorithmFunction } from "./selectChecksumAlgorithmFunction";
+import { stringHasher } from "./stringHasher";
+export const flexibleChecksumsMiddlewareOptions = {
+    name: "flexibleChecksumsMiddleware",
+    step: "build",
+    tags: ["BODY_CHECKSUM"],
+    override: true,
+};
+export const flexibleChecksumsMiddleware = (config, middlewareConfig) => (next, context) => async (args) => {
+    if (!HttpRequest.isInstance(args.request)) {
+        return next(args);
+    }
+    const { request } = args;
+    const { body: requestBody, headers } = request;
+    const { base64Encoder, streamHasher } = config;
+    const { input, requestChecksumRequired, requestAlgorithmMember } = middlewareConfig;
+    const checksumAlgorithm = getChecksumAlgorithmForRequest(input, {
+        requestChecksumRequired,
+        requestAlgorithmMember,
+    }, !!context.isS3ExpressBucket);
+    let updatedBody = requestBody;
+    let updatedHeaders = headers;
+    if (checksumAlgorithm) {
+        const checksumLocationName = getChecksumLocationName(checksumAlgorithm);
+        const checksumAlgorithmFn = selectChecksumAlgorithmFunction(checksumAlgorithm, config);
+        if (isStreaming(requestBody)) {
+            const { getAwsChunkedEncodingStream, bodyLengthChecker } = config;
+            updatedBody = getAwsChunkedEncodingStream(requestBody, {
+                base64Encoder,
+                bodyLengthChecker,
+                checksumLocationName,
+                checksumAlgorithmFn,
+                streamHasher,
+            });
+            updatedHeaders = {
+                ...headers,
+                "content-encoding": headers["content-encoding"]
+                    ? `${headers["content-encoding"]},aws-chunked`
+                    : "aws-chunked",
+                "transfer-encoding": "chunked",
+                "x-amz-decoded-content-length": headers["content-length"],
+                "x-amz-content-sha256": "STREAMING-UNSIGNED-PAYLOAD-TRAILER",
+                "x-amz-trailer": checksumLocationName,
+            };
+            delete updatedHeaders["content-length"];
+        }
+        else if (!hasHeader(checksumLocationName, headers)) {
+            const rawChecksum = await stringHasher(checksumAlgorithmFn, requestBody);
+            updatedHeaders = {
+                ...headers,
+                [checksumLocationName]: base64Encoder(rawChecksum),
+            };
+        }
+    }
+    const result = await next({
+        ...args,
+        request: {
+            ...request,
+            headers: updatedHeaders,
+            body: updatedBody,
+        },
+    });
+    return result;
+};

resources/app/node_modules/@aws-sdk/middleware-flexible-checksums/dist-es/flexibleChecksumsResponseMiddleware.js

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+import { HttpRequest } from "@smithy/protocol-http";
+import { getChecksumAlgorithmListForResponse } from "./getChecksumAlgorithmListForResponse";
+import { getChecksumLocationName } from "./getChecksumLocationName";
+import { isChecksumWithPartNumber } from "./isChecksumWithPartNumber";
+import { isStreaming } from "./isStreaming";
+import { createReadStreamOnBuffer } from "./streams/create-read-stream-on-buffer";
+import { validateChecksumFromResponse } from "./validateChecksumFromResponse";
+export const flexibleChecksumsResponseMiddlewareOptions = {
+    name: "flexibleChecksumsResponseMiddleware",
+    toMiddleware: "deserializerMiddleware",
+    relation: "after",
+    tags: ["BODY_CHECKSUM"],
+    override: true,
+};
+export const flexibleChecksumsResponseMiddleware = (config, middlewareConfig) => (next, context) => async (args) => {
+    if (!HttpRequest.isInstance(args.request)) {
+        return next(args);
+    }
+    const input = args.input;
+    const result = await next(args);
+    const response = result.response;
+    let collectedStream = undefined;
+    const { requestValidationModeMember, responseAlgorithms } = middlewareConfig;
+    if (requestValidationModeMember && input[requestValidationModeMember] === "ENABLED") {
+        const { clientName, commandName } = context;
+        const isS3WholeObjectMultipartGetResponseChecksum = clientName === "S3Client" &&
+            commandName === "GetObjectCommand" &&
+            getChecksumAlgorithmListForResponse(responseAlgorithms).every((algorithm) => {
+                const responseHeader = getChecksumLocationName(algorithm);
+                const checksumFromResponse = response.headers[responseHeader];
+                return !checksumFromResponse || isChecksumWithPartNumber(checksumFromResponse);
+            });
+        if (isS3WholeObjectMultipartGetResponseChecksum) {
+            return result;
+        }
+        const isStreamingBody = isStreaming(response.body);
+        if (isStreamingBody) {
+            collectedStream = await config.streamCollector(response.body);
+            response.body = createReadStreamOnBuffer(collectedStream);
+        }
+        await validateChecksumFromResponse(result.response, {
+            config,
+            responseAlgorithms,
+        });
+        if (isStreamingBody && collectedStream) {
+            response.body = createReadStreamOnBuffer(collectedStream);
+        }
+    }
+    return result;
+};

resources/app/node_modules/@aws-sdk/middleware-flexible-checksums/dist-es/getChecksum.js

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+import { isStreaming } from "./isStreaming";
+import { stringHasher } from "./stringHasher";
+export const getChecksum = async (body, { streamHasher, checksumAlgorithmFn, base64Encoder }) => {
+    const digest = isStreaming(body) ? streamHasher(checksumAlgorithmFn, body) : stringHasher(checksumAlgorithmFn, body);
+    return base64Encoder(await digest);
+};

resources/app/node_modules/@aws-sdk/middleware-flexible-checksums/dist-es/getChecksumAlgorithmForRequest.js

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+import { DEFAULT_CHECKSUM_ALGORITHM, S3_EXPRESS_DEFAULT_CHECKSUM_ALGORITHM } from "./constants";
+import { CLIENT_SUPPORTED_ALGORITHMS } from "./types";
+export const getChecksumAlgorithmForRequest = (input, { requestChecksumRequired, requestAlgorithmMember }, isS3Express) => {
+    const defaultAlgorithm = isS3Express ? S3_EXPRESS_DEFAULT_CHECKSUM_ALGORITHM : DEFAULT_CHECKSUM_ALGORITHM;
+    if (!requestAlgorithmMember || !input[requestAlgorithmMember]) {
+        return requestChecksumRequired ? defaultAlgorithm : undefined;
+    }
+    const checksumAlgorithm = input[requestAlgorithmMember];
+    if (!CLIENT_SUPPORTED_ALGORITHMS.includes(checksumAlgorithm)) {
+        throw new Error(`The checksum algorithm "${checksumAlgorithm}" is not supported by the client.` +
+            ` Select one of ${CLIENT_SUPPORTED_ALGORITHMS}.`);
+    }
+    return checksumAlgorithm;
+};

resources/app/node_modules/@aws-sdk/middleware-flexible-checksums/dist-es/getChecksumAlgorithmListForResponse.js

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+import { CLIENT_SUPPORTED_ALGORITHMS, PRIORITY_ORDER_ALGORITHMS } from "./types";
+export const getChecksumAlgorithmListForResponse = (responseAlgorithms = []) => {
+    const validChecksumAlgorithms = [];
+    for (const algorithm of PRIORITY_ORDER_ALGORITHMS) {
+        if (!responseAlgorithms.includes(algorithm) || !CLIENT_SUPPORTED_ALGORITHMS.includes(algorithm)) {
+            continue;
+        }
+        validChecksumAlgorithms.push(algorithm);
+    }
+    return validChecksumAlgorithms;
+};

resources/app/node_modules/@aws-sdk/middleware-flexible-checksums/dist-es/getChecksumLocationName.js

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+import { ChecksumAlgorithm } from "./constants";
+export const getChecksumLocationName = (algorithm) => algorithm === ChecksumAlgorithm.MD5 ? "content-md5" : `x-amz-checksum-${algorithm.toLowerCase()}`;

resources/app/node_modules/@aws-sdk/middleware-flexible-checksums/dist-es/getFlexibleChecksumsPlugin.js

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+import { flexibleChecksumsMiddleware, flexibleChecksumsMiddlewareOptions, } from "./flexibleChecksumsMiddleware";
+import { flexibleChecksumsResponseMiddleware, flexibleChecksumsResponseMiddlewareOptions, } from "./flexibleChecksumsResponseMiddleware";
+export const getFlexibleChecksumsPlugin = (config, middlewareConfig) => ({
+    applyToStack: (clientStack) => {
+        clientStack.add(flexibleChecksumsMiddleware(config, middlewareConfig), flexibleChecksumsMiddlewareOptions);
+        clientStack.addRelativeTo(flexibleChecksumsResponseMiddleware(config, middlewareConfig), flexibleChecksumsResponseMiddlewareOptions);
+    },
+});

resources/app/node_modules/@aws-sdk/middleware-flexible-checksums/dist-es/hasHeader.js

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+export const hasHeader = (header, headers) => {
+    const soughtHeader = header.toLowerCase();
+    for (const headerName of Object.keys(headers)) {
+        if (soughtHeader === headerName.toLowerCase()) {
+            return true;
+        }
+    }
+    return false;
+};

resources/app/node_modules/@aws-sdk/middleware-flexible-checksums/dist-es/index.js

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+export * from "./constants";
+export * from "./flexibleChecksumsMiddleware";
+export * from "./getFlexibleChecksumsPlugin";

resources/app/node_modules/@aws-sdk/middleware-flexible-checksums/dist-es/isChecksumWithPartNumber.js

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+export const isChecksumWithPartNumber = (checksum) => {
+    const lastHyphenIndex = checksum.lastIndexOf("-");
+    if (lastHyphenIndex !== -1) {
+        const numberPart = checksum.slice(lastHyphenIndex + 1);
+        if (!numberPart.startsWith("0")) {
+            const number = parseInt(numberPart, 10);
+            if (!isNaN(number) && number >= 1 && number <= 10000) {
+                return true;
+            }
+        }
+    }
+    return false;
+};

resources/app/node_modules/@aws-sdk/middleware-flexible-checksums/dist-es/isStreaming.js

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+import { isArrayBuffer } from "@smithy/is-array-buffer";
+export const isStreaming = (body) => body !== undefined && typeof body !== "string" && !ArrayBuffer.isView(body) && !isArrayBuffer(body);

resources/app/node_modules/@aws-sdk/middleware-flexible-checksums/dist-es/selectChecksumAlgorithmFunction.js

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+import { AwsCrc32 } from "@aws-crypto/crc32";
+import { AwsCrc32c } from "@aws-crypto/crc32c";
+import { ChecksumAlgorithm } from "./constants";
+export const selectChecksumAlgorithmFunction = (checksumAlgorithm, config) => ({
+    [ChecksumAlgorithm.MD5]: config.md5,
+    [ChecksumAlgorithm.CRC32]: AwsCrc32,
+    [ChecksumAlgorithm.CRC32C]: AwsCrc32c,
+    [ChecksumAlgorithm.SHA1]: config.sha1,
+    [ChecksumAlgorithm.SHA256]: config.sha256,
+}[checksumAlgorithm]);

resources/app/node_modules/@aws-sdk/middleware-flexible-checksums/dist-es/streams/create-read-stream-on-buffer.browser.js

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+export function createReadStreamOnBuffer(buffer) {
+    return new Blob([buffer]).stream();
+}

resources/app/node_modules/@aws-sdk/middleware-flexible-checksums/dist-es/streams/create-read-stream-on-buffer.js

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+import { Transform } from "stream";
+export function createReadStreamOnBuffer(buffer) {
+    const stream = new Transform();
+    stream.push(buffer);
+    stream.push(null);
+    return stream;
+}

resources/app/node_modules/@aws-sdk/middleware-flexible-checksums/dist-es/stringHasher.js

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+import { toUint8Array } from "@smithy/util-utf8";
+export const stringHasher = (checksumAlgorithmFn, body) => {
+    const hash = new checksumAlgorithmFn();
+    hash.update(toUint8Array(body || ""));
+    return hash.digest();
+};

resources/app/node_modules/@aws-sdk/middleware-flexible-checksums/dist-es/types.js

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+import { ChecksumAlgorithm } from "./constants";
+export const CLIENT_SUPPORTED_ALGORITHMS = [
+    ChecksumAlgorithm.CRC32,
+    ChecksumAlgorithm.CRC32C,
+    ChecksumAlgorithm.SHA1,
+    ChecksumAlgorithm.SHA256,
+];
+export const PRIORITY_ORDER_ALGORITHMS = [
+    ChecksumAlgorithm.CRC32,
+    ChecksumAlgorithm.CRC32C,
+    ChecksumAlgorithm.SHA1,
+    ChecksumAlgorithm.SHA256,
+];

resources/app/node_modules/@aws-sdk/middleware-flexible-checksums/dist-es/validateChecksumFromResponse.js

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+import { getChecksum } from "./getChecksum";
+import { getChecksumAlgorithmListForResponse } from "./getChecksumAlgorithmListForResponse";
+import { getChecksumLocationName } from "./getChecksumLocationName";
+import { selectChecksumAlgorithmFunction } from "./selectChecksumAlgorithmFunction";
+export const validateChecksumFromResponse = async (response, { config, responseAlgorithms }) => {
+    const checksumAlgorithms = getChecksumAlgorithmListForResponse(responseAlgorithms);
+    const { body: responseBody, headers: responseHeaders } = response;
+    for (const algorithm of checksumAlgorithms) {
+        const responseHeader = getChecksumLocationName(algorithm);
+        const checksumFromResponse = responseHeaders[responseHeader];
+        if (checksumFromResponse) {
+            const checksumAlgorithmFn = selectChecksumAlgorithmFunction(algorithm, config);
+            const { streamHasher, base64Encoder } = config;
+            const checksum = await getChecksum(responseBody, { streamHasher, checksumAlgorithmFn, base64Encoder });
+            if (checksum === checksumFromResponse) {
+                break;
+            }
+            throw new Error(`Checksum mismatch: expected "${checksum}" but received "${checksumFromResponse}"` +
+                ` in response header "${responseHeader}".`);
+        }
+    }
+};