81e429eb14
* Render attachments inside iframes. * Fix up the image and video views * Fix m.audio * Comments, and only use the cross domain renderer if the attachment is encrypted * Fix whitespace * Don't decrypt file attachments immediately * Use https://usercontent.riot.im/v1.html by default * typos * Put the config in the React context. Use it in MFileBody to configure the cross origin renderer URL. * Call it appConfig in the context * Return the promises so they don't get dropped
67 lines
2.4 KiB
JavaScript
67 lines
2.4 KiB
JavaScript
/*
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Copyright 2016 OpenMarket Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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// Pull in the encryption lib so that we can decrypt attachments.
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import encrypt from 'browser-encrypt-attachment';
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// Pull in a fetch polyfill so we can download encrypted attachments.
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import 'isomorphic-fetch';
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// Grab the client so that we can turn mxc:// URLs into https:// URLS.
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import MatrixClientPeg from '../MatrixClientPeg';
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import q from 'q';
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/**
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* Read blob as a data:// URI.
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* @return {Promise} A promise that resolves with the data:// URI.
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*/
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export function readBlobAsDataUri(file) {
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var deferred = q.defer();
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var reader = new FileReader();
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reader.onload = function(e) {
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deferred.resolve(e.target.result);
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};
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reader.onerror = function(e) {
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deferred.reject(e);
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};
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reader.readAsDataURL(file);
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return deferred.promise;
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}
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/**
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* Decrypt a file attached to a matrix event.
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* @param file {Object} The json taken from the matrix event.
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* This passed to [link]{@link https://github.com/matrix-org/browser-encrypt-attachments}
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* as the encryption info object, so will also have the those keys in addition to
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* the keys below.
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* @param file.url {string} An mxc:// URL for the encrypted file.
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* @param file.mimetype {string} The MIME-type of the plaintext file.
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*/
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export function decryptFile(file) {
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const url = MatrixClientPeg.get().mxcUrlToHttp(file.url);
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// Download the encrypted file as an array buffer.
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return q(fetch(url)).then(function(response) {
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return response.arrayBuffer();
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}).then(function(responseData) {
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// Decrypt the array buffer using the information taken from
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// the event content.
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return encrypt.decryptAttachment(responseData, file);
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}).then(function(dataArray) {
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// Turn the array into a Blob and give it the correct MIME-type.
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var blob = new Blob([dataArray], {type: file.mimetype});
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return blob;
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});
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}
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