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https://github.com/transatoshi-mw/grin-web-wallet.git
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contents of zip
This commit is contained in:
transatoshi
392
scripts/output_worker.js
Executable file
392
scripts/output_worker.js
Executable file
@@ -0,0 +1,392 @@
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<?php
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// Included files
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require_once __DIR__ . "/../backend/common.php";
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require_once __DIR__ . "/../backend/resources.php";
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// Main function
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// Set content type header
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header("Content-Type: application/javascript; charset=" . mb_internal_encoding());
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?>// Use strict
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"use strict";
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// Import scripts
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importScripts(".<?= escapeString(getResource("./scripts/BLAKE2b-0.0.2.js")); ?>");
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importScripts(".<?= escapeString(getResource("./scripts/secp256k1-zkp-0.0.29.js")); ?>");
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importScripts(".<?= escapeString(getResource("./scripts/bignumber.js-9.1.1.js")); ?>");
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importScripts(".<?= escapeString(getResource("./scripts/common.js")); ?>");
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importScripts(".<?= escapeString(getResource("./scripts/crypto.js")); ?>");
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importScripts(".<?= escapeString(getResource("./scripts/identifier.js")); ?>");
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importScripts(".<?= escapeString(getResource("./scripts/proof_builder.js")); ?>");
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importScripts(".<?= escapeString(getResource("./scripts/legacy_proof_builder.js")); ?>");
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importScripts(".<?= escapeString(getResource("./scripts/new_proof_builder.js")); ?>");
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importScripts(".<?= escapeString(getResource("./scripts/view_proof_builder.js")); ?>");
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importScripts(".<?= escapeString(getResource("./scripts/output.js")); ?>");
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// Constants
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// Files
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const FILES = <?= json_encode($files); ?>;
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// Dependencies initializations
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const DEPENDENCIES_INITIALIZATIONS = [
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// BLAKE2b initialize
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Blake2b.initialize,
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// Secp256k1-zkp initialize
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Secp256k1Zkp.initialize
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];
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// Dependencies uninitializations
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const DEPENDENCIES_UNINITIALIZATIONS = [
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// Secp256k1-zkp uninitialize
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Secp256k1Zkp.uninitialize
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];
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// Global variables
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// URL query string
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var URL_QUERY_STRING;
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// Events
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// Message event
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self.addEventListener("message", function(event) {
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// Get message
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var message = event["data"];
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// Get message's request index
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var requestIndex = message[Output.MESSAGE_REQUEST_INDEX_OFFSET];
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// Get message's type
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var type = message[Output.MESSAGE_TYPE_OFFSET];
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// Check type
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switch(type) {
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// Initialize request type
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case Output.INITIALIZE_REQUEST_TYPE:
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// Get message's URL query string
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URL_QUERY_STRING = message[Output.MESSAGE_INITIALIZE_URL_QUERY_STRING_OFFSET];
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// Perform dependencies initializations
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Promise.all(DEPENDENCIES_INITIALIZATIONS.map(function(dependencyInitialization) {
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// Return performing dependency initialization
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return dependencyInitialization();
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})).then(function() {
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// Respond with success status
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postMessage([
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// Request index
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requestIndex,
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// Type
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type,
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// Status
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Output.STATUS_SUCCESS_VALUE
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]);
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// Catch errors
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}).catch(function(error) {
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// Respond with failed status
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postMessage([
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// Request index
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requestIndex,
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// Type
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type,
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// Status
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Output.STATUS_FAILED_VALUE
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]);
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});
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// Break
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break;
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// Uninitialize request type
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case Output.UNINITIALIZE_REQUEST_TYPE:
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// Go through all dependencies uninitializations
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for(var i = 0; i < DEPENDENCIES_UNINITIALIZATIONS["length"]; ++i) {
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// Get dependency's uninitialization
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var dependencyUninitialization = DEPENDENCIES_UNINITIALIZATIONS[i];
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// Perform dependency's uninitialization
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dependencyUninitialization();
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}
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// Respond with success status
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postMessage([
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// Request index
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requestIndex,
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// Type
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type,
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// Status
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Output.STATUS_SUCCESS_VALUE
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]);
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// Break
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break;
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// Legacy information request type, new information request type, or view information request type
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case Output.LEGACY_INFORMATION_REQUEST_TYPE:
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case Output.NEW_INFORMATION_REQUEST_TYPE:
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case Output.VIEW_INFORMATION_REQUEST_TYPE:
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// Get message's proof
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var proof = message[Output.MESSAGE_PROOF_OFFSET];
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// Get message's commit
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var commit = message[Output.MESSAGE_COMMIT_OFFSET];
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// Get message's extended private key or root public key
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var extendedPrivateKeyOrRootPublicKey = message[Output.MESSAGE_EXTENDED_PRIVATE_KEY_OR_ROOT_PUBLIC_KEY_OFFSET];
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// Check type
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switch(type) {
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// Legacy information request type
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case Output.LEGACY_INFORMATION_REQUEST_TYPE:
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// Create legacy proof builder
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var proofBuilder = new LegacyProofBuilder();
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// Break
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break;
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// New information request type
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case Output.NEW_INFORMATION_REQUEST_TYPE:
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// Create new proof builder
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var proofBuilder = new NewProofBuilder();
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// Break
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break;
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// View information request type
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case Output.VIEW_INFORMATION_REQUEST_TYPE:
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// Create view proof builder
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var proofBuilder = new ViewProofBuilder();
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// Break
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break;
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}
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// Initialize proof builder
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proofBuilder.initialize(extendedPrivateKeyOrRootPublicKey).then(function() {
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// Get information
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getInformation(proof, commit, extendedPrivateKeyOrRootPublicKey, proofBuilder).then(function(information) {
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// Uninitialize proof builder
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proofBuilder.uninitialize();
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// Securely clear extended private key or root public key
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extendedPrivateKeyOrRootPublicKey.fill(0);
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// Respond with information
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postMessage([
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// Request index
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requestIndex,
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// Type
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type,
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// Information
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information
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]);
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// Catch errors
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}).catch(function(error) {
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// Uninitialize proof builder
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proofBuilder.uninitialize();
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// Securely clear extended private key or root public key
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extendedPrivateKeyOrRootPublicKey.fill(0);
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// Respond with no information
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postMessage([
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// Request index
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requestIndex,
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// Type
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type,
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// Information
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Output.NO_INFORMATION
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]);
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});
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// Catch errors
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}).catch(function(error) {
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// Securely clear extended private key or root public key
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extendedPrivateKeyOrRootPublicKey.fill(0);
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// Respond with no information
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postMessage([
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// Request index
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requestIndex,
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// Type
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type,
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// Information
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Output.NO_INFORMATION
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]);
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});
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// Break;
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break;
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}
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});
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// Supporting function implementation
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// Add minified suffix
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function addMinifiedSuffix(file) {
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// Get file's suffix offset
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var suffixOffset = file.lastIndexOf(".");
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// Check if file contains no suffix
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if(suffixOffset === Common.INDEX_NOT_FOUND || suffixOffset < "./"["length"])
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// Return file with minified suffix at the end
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return file + ".min";
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// Otherwise
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else
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// Return file with minified suffix insert before its suffix
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return file.substring(0, suffixOffset) + ".min" + file.substring(suffixOffset);
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}
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// Get resource
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function getResource(file) {
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// Return resource with version
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return ((file in FILES === true && FILES[file]["Minified"] === true) ? addMinifiedSuffix(file) : file) + ((file in FILES === true && FILES[file]["Version"] !== 0) ? "?" + FILES[file]["Version"] : "");
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}
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// Get information
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function getInformation(proof, commit, extendedPrivateKeyOrRootPublicKey, proofBuilder) {
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// Return promise
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return new Promise(function(resolve, reject) {
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// Check if commit is valid
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if(Secp256k1Zkp.isValidCommit(commit) === true) {
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// Return getting rewind nonce from the proof builder
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return proofBuilder.rewindNonce(commit).then(function(rewindNonce) {
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// Check if rewinding bulletproof was successful
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var bulletproof = Secp256k1Zkp.rewindBulletproof(proof, commit, rewindNonce);
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if(bulletproof !== Secp256k1Zkp.OPERATION_FAILED) {
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// Securely clear rewind nonce
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rewindNonce.fill(0);
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// Get amount from bulletproof
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var amount = new BigNumber(bulletproof["Value"]);
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// Get message from bulletproof
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var message = bulletproof["Message"];
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// Return having the proof builder get the output
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return proofBuilder.getOutput(extendedPrivateKeyOrRootPublicKey, amount, commit, message).then(function(output) {
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// Get identifier from output
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var identifier = output[ProofBuilder.OUTPUT_IDENTIFIER_INDEX];
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// Get switch type from output
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var switchType = output[ProofBuilder.OUTPUT_SWITCH_TYPE_INDEX];
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// Check if output's proof verifies the output's commit
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if(Secp256k1Zkp.verifyBulletproof(proof, commit, new Uint8Array([])) === true) {
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// Resolve information
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resolve([
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// Amount
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Common.serializeObject(amount),
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// Identifier
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Common.serializeObject(identifier),
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// Switch type
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switchType
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]);
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}
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// Otherwise
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else {
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// Resolve no information
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resolve(Output.NO_INFORMATION);
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}
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// Catch errors
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}).catch(function(error) {
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// Resolve no information
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resolve(Output.NO_INFORMATION);
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});
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}
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// Otherwise
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else {
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// Securely clear rewind nonce
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rewindNonce.fill(0);
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// Resolve no information
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resolve(Output.NO_INFORMATION);
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}
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// Catch errors
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}).catch(function(error) {
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// Resolve no information
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resolve(Output.NO_INFORMATION);
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});
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}
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// Otherwise
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else {
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// Resolve no information
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resolve(Output.NO_INFORMATION);
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}
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});
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}
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