@fgiova/aws-signature/dist/aws/getPayloadHash.js

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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.getPayloadHash = getPayloadHash;
const constants_1 = require("./constants");
const utils_1 = require("./utils");
const crypto_1 = require("crypto");
/**
 * @private
 */
function getPayloadHash({ headers, body }) {
    if (headers) {
        for (const headerName of Object.keys(headers)) {
            if (headerName.toLowerCase() === constants_1.SHA256_HEADER) {
                return headers[headerName];
            }
        }
    }
    if (body == undefined) {
        return "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855";
    }
    else if (typeof body === "string" || ArrayBuffer.isView(body) || (0, utils_1.isArrayBuffer)(body)) {
        return (0, crypto_1.createHash)("sha256").update((0, utils_1.toUint8Array)(body)).digest("hex");
    }
    // As any defined body that is not a string or binary data is a stream, this
    // body is unsignable. Attempt to send the request with an unsigned payload,
    // which may or may not be accepted by the service.
    return constants_1.UNSIGNED_PAYLOAD;
}