Differential D7976 Diff 27254 native/media/encryption-utils.js

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native/media/encryption-utils.js

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import { getMessageForException } from 'lib/utils/errors.js';		import { getMessageForException } from 'lib/utils/errors.js';
import { pad, unpad, calculatePaddedLength } from 'lib/utils/pkcs7-padding.js';		import { pad, unpad, calculatePaddedLength } from 'lib/utils/pkcs7-padding.js';

import { temporaryDirectoryPath } from './file-utils.js';		import { temporaryDirectoryPath } from './file-utils.js';
import { getFetchableURI } from './identifier-utils.js';		import { getFetchableURI } from './identifier-utils.js';
import type { MediaResult } from './media-utils.js';		import type { MediaResult } from './media-utils.js';
import { commUtilsModule } from '../native-modules.js';		import { commUtilsModule } from '../native-modules.js';
import * as AES from '../utils/aes-crypto-module.js';		import * as AES from '../utils/aes-crypto-module.js';
		import { arrayBufferFromBlob } from '../utils/blob-utils-module.js';

const PADDING_THRESHOLD = 5000000; // we don't pad files larger than this		const PADDING_THRESHOLD = 5000000; // we don't pad files larger than this

type EncryptedFileResult = {		type EncryptedFileResult = {
+success: true,		+success: true,
+uri: string,		+uri: string,
+sha256Hash: string,		+sha256Hash: string,
+encryptionKey: string,		+encryptionKey: string,
Show All 25 Lines	async function encryptFile(uri: string): Promise<{
try {		try {
const path = pathFromURI(uri);		const path = pathFromURI(uri);
// for local paths (file:// URI) we can use native module which is faster		// for local paths (file:// URI) we can use native module which is faster
if (path) {		if (path) {
const buffer = await commUtilsModule.readBufferFromFile(path);		const buffer = await commUtilsModule.readBufferFromFile(path);
data = new Uint8Array(buffer);		data = new Uint8Array(buffer);
} else {		} else {
const response = await fetch(getFetchableURI(uri));		const response = await fetch(getFetchableURI(uri));
const buffer = await response.arrayBuffer();		const blob = await response.blob();
		const buffer = arrayBufferFromBlob(blob);
data = new Uint8Array(buffer);		data = new Uint8Array(buffer);
}		}
} catch (e) {		} catch (e) {
success = false;		success = false;
exceptionMessage = getMessageForException(e);		exceptionMessage = getMessageForException(e);
}		}
steps.push({		steps.push({
step: 'read_plaintext_file',		step: 'read_plaintext_file',
▲ Show 20 Lines • Show All 216 Lines • ▼ Show 20 Lines	): Promise<{
// Step 1. Fetch the file and convert it to a Uint8Array		// Step 1. Fetch the file and convert it to a Uint8Array
const fetchStartTime = Date.now();		const fetchStartTime = Date.now();
let data;		let data;
try {		try {
const response = await fetch(getFetchableURI(holder));		const response = await fetch(getFetchableURI(holder));
if (!response.ok) {		if (!response.ok) {
throw new Error(`HTTP error ${response.status}: ${response.statusText}`);		throw new Error(`HTTP error ${response.status}: ${response.statusText}`);
}		}
const buf = await response.arrayBuffer();		const blob = await response.blob();
data = new Uint8Array(buf);		const buffer = arrayBufferFromBlob(blob);
		data = new Uint8Array(buffer);
} catch (e) {		} catch (e) {
success = false;		success = false;
exceptionMessage = getMessageForException(e);		exceptionMessage = getMessageForException(e);
}		}
steps.push({		steps.push({
step: 'fetch_file',		step: 'fetch_file',
file: holder,		file: holder,
time: Date.now() - fetchStartTime,		time: Date.now() - fetchStartTime,
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