mirror of
https://github.com/bitwarden/browser
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065725df7a
* Add proxy support for file downloads Instead of using node's native fetch we extend ApiService with NodeApiService to add support for proxies using `node-fetch` * Add comments to the DownloadCommand --------- Co-authored-by: Daniel James Smith <djsmith85@users.noreply.github.com>
66 lines
2.4 KiB
TypeScript
66 lines
2.4 KiB
TypeScript
// FIXME: Update this file to be type safe and remove this and next line
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// @ts-strict-ignore
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import { ApiService } from "@bitwarden/common/abstractions/api.service";
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import { EncryptService } from "@bitwarden/common/platform/abstractions/encrypt.service";
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import { EncArrayBuffer } from "@bitwarden/common/platform/models/domain/enc-array-buffer";
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import { SymmetricCryptoKey } from "@bitwarden/common/platform/models/domain/symmetric-crypto-key";
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import { Response } from "../models/response";
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import { FileResponse } from "../models/response/file.response";
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import { CliUtils } from "../utils";
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/**
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* Used to download and save attachments
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*/
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export abstract class DownloadCommand {
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/**
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* @param encryptService - Needed for decryption of the retrieved attachment
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* @param apiService - Needed to override the existing nativeFetch which is available as of Node 18, to support proxies
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*/
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constructor(
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protected encryptService: EncryptService,
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protected apiService: ApiService,
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) {}
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/**
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* Fetches an attachment via the url, decrypts it's content and saves it to a file
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* @param url - url used to retrieve the attachment
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* @param key - SymmetricCryptoKey to decrypt the file contents
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* @param fileName - filename used when written to disk
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* @param output - If output is empty or `--raw` was passed to the initial command the content is output onto stdout
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* @returns Promise<FileResponse>
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*/
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protected async saveAttachmentToFile(
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url: string,
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key: SymmetricCryptoKey,
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fileName: string,
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output?: string,
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) {
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const response = await this.apiService.nativeFetch(
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new Request(url, { headers: { cache: "no-cache" } }),
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);
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if (response.status !== 200) {
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return Response.error(
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"A " + response.status + " error occurred while downloading the attachment.",
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);
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}
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try {
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const encBuf = await EncArrayBuffer.fromResponse(response);
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const decBuf = await this.encryptService.decryptToBytes(encBuf, key);
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if (process.env.BW_SERVE === "true") {
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const res = new FileResponse(Buffer.from(decBuf), fileName);
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return Response.success(res);
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} else {
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return await CliUtils.saveResultToFile(Buffer.from(decBuf), output, fileName);
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}
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} catch (e) {
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if (typeof e === "string") {
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return Response.error(e);
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} else {
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return Response.error("An error occurred while saving the attachment.");
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}
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}
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}
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}
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