cryptpad/www/common/outer/upload.js

135 lines
4.8 KiB
JavaScript

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