43 lines
1.9 KiB
JavaScript
43 lines
1.9 KiB
JavaScript
import { HttpRequest, HttpResponse } from "@smithy/protocol-http";
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import { getSkewCorrectedDate } from "./utils/getSkewCorrectedDate";
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import { getUpdatedSystemClockOffset } from "./utils/getUpdatedSystemClockOffset";
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export const awsAuthMiddleware = (options) => (next, context) => async function (args) {
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if (!HttpRequest.isInstance(args.request))
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return next(args);
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const authScheme = context.endpointV2?.properties?.authSchemes?.[0];
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const multiRegionOverride = authScheme?.name === "sigv4a" ? authScheme?.signingRegionSet?.join(",") : undefined;
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const signer = await options.signer(authScheme);
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const output = await next({
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...args,
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request: await signer.sign(args.request, {
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signingDate: getSkewCorrectedDate(options.systemClockOffset),
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signingRegion: multiRegionOverride || context["signing_region"],
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signingService: context["signing_service"],
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}),
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}).catch((error) => {
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const serverTime = error.ServerTime ?? getDateHeader(error.$response);
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if (serverTime) {
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options.systemClockOffset = getUpdatedSystemClockOffset(serverTime, options.systemClockOffset);
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}
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throw error;
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});
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const dateHeader = getDateHeader(output.response);
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if (dateHeader) {
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options.systemClockOffset = getUpdatedSystemClockOffset(dateHeader, options.systemClockOffset);
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}
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return output;
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};
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const getDateHeader = (response) => HttpResponse.isInstance(response) ? response.headers?.date ?? response.headers?.Date : undefined;
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export const awsAuthMiddlewareOptions = {
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name: "awsAuthMiddleware",
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tags: ["SIGNATURE", "AWSAUTH"],
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relation: "after",
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toMiddleware: "retryMiddleware",
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override: true,
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};
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export const getAwsAuthPlugin = (options) => ({
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applyToStack: (clientStack) => {
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clientStack.addRelativeTo(awsAuthMiddleware(options), awsAuthMiddlewareOptions);
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},
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});
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export const getSigV4AuthPlugin = getAwsAuthPlugin;
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