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132 lines
4.6 KiB
JavaScript
132 lines
4.6 KiB
JavaScript
define([
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'/file/file-crypto.js',
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'/common/common-hash.js',
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'/bower_components/nthen/index.js',
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'/bower_components/tweetnacl/nacl-fast.min.js',
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], function (FileCrypto, Hash, nThen) {
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var Nacl = window.nacl;
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var module = {};
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module.upload = function (file, noStore, common, updateProgress, onComplete, onError, onPending) {
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var u8 = file.blob; // This is not a blob but a uint8array
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var metadata = file.metadata;
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var owned = file.owned;
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// if it exists, path contains the new pad location in the drive
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var path = file.path;
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var password = file.password;
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var hash, secret, key, id, href;
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var getNewHash = function () {
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hash = Hash.createRandomHash('file', password);
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secret = Hash.getSecrets('file', hash, password);
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key = secret.keys.cryptKey;
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id = secret.channel;
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href = '/file/#' + hash;
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};
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var getValidHash = function (cb) {
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getNewHash();
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common.getFileSize(href, password, function (err, size) {
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if (err || typeof(size) !== "number") { throw new Error(err || "Invalid size!"); }
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if (size === 0) { return void cb(); }
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getValidHash();
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});
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};
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var edPublic;
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nThen(function (waitFor) {
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// Generate a hash and check if the resulting id is valid (not already used)
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getValidHash(waitFor());
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}).nThen(function (waitFor) {
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if (!owned) { return; }
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common.getMetadata(waitFor(function (err, m) {
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edPublic = m.priv.edPublic;
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metadata.owners = [edPublic];
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}));
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}).nThen(function () {
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var next = FileCrypto.encrypt(u8, metadata, key);
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var estimate = FileCrypto.computeEncryptedSize(u8.length, metadata);
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var sendChunk = function (box, cb) {
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var enc = Nacl.util.encodeBase64(box);
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common.uploadChunk(enc, function (e, msg) {
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cb(e, msg);
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});
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};
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var actual = 0;
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var again = function (err, box) {
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if (err) { throw new Error(err); }
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if (box) {
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actual += box.length;
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var progressValue = (actual / estimate * 100);
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updateProgress(progressValue);
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return void sendChunk(box, function (e) {
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if (e) { return console.error(e); }
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next(again);
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});
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}
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if (actual !== estimate) {
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console.error('Estimated size does not match actual size');
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}
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// if not box then done
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common.uploadComplete(id, owned, function (e) {
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if (e) { return void console.error(e); }
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var uri = ['', 'blob', id.slice(0,2), id].join('/');
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console.log("encrypted blob is now available as %s", uri);
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var title = metadata.name;
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if (noStore) { return void onComplete(href); }
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var data = {
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title: title || "",
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href: href,
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path: path,
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password: password,
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channel: id,
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owners: metadata.owners
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};
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common.setPadTitle(data, function (err) {
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if (err) { return void console.error(err); }
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onComplete(href);
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common.setPadAttribute('fileType', metadata.type, null, href);
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common.setPadAttribute('owners', metadata.owners, null, href);
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});
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});
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};
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common.uploadStatus(estimate, function (e, pending) {
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if (e) {
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console.error(e);
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onError(e);
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return;
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}
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if (pending) {
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return void onPending(function () {
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// if the user wants to cancel the pending upload to execute that one
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common.uploadCancel(estimate, function (e) {
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if (e) {
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return void console.error(e);
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}
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next(again);
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});
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});
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}
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next(again);
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});
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});
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};
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return module;
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});
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