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index.js
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index.js
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const os = require('os');
const fs = require('fs');
const promisify = require('util').promisify;
const Koa = require('koa');
const Router = require('koa-router');
const config = require('config');
const mysql = require('mysql2/promise');
const request = require('request-promise');
const nodemailer = require('nodemailer');
const aws = require('aws-sdk');
const hummus = require('hummus');
const { v4: uuidv4 } = require('uuid');
const sha3 = require('js-sha3');
const privateToAccount = require('ethjs-account').privateToAccount;
const koaBody = require('koa-body');
const logger = require('koa-logger');
const streams = require('memory-streams');
const cors = require('@koa/cors');
const Stripe = require('stripe');
const { IncomingWebhook } = require('@slack/client');
global.XMLHttpRequest = require("xmlhttprequest").XMLHttpRequest;
const { SpaceClient } = require('@fleekhq/space-client');
const readFile = promisify(fs.readFile);
const writeFile = promisify(fs.writeFile);
const app = module.exports = new Koa();
const router = new Router();
const stripe = new Stripe(config.get('stripe').secret);
const slackDataHook = new IncomingWebhook(config.get('slack_hooks').data);
const slackErrorHook = new IncomingWebhook(config.get('slack_hooks').error);
const slackStripeHook = new IncomingWebhook(config.get('slack_hooks').stripe);
const apiPrefix = config.get('api_prefix');
const ethvigil_api = JSON.parse(JSON.stringify(config.get('ethvigil_api')));
var spaceClient;
if (!process.env.TESTS) {
spaceClient = new SpaceClient(config.get('spaceDaemon'));
var mysqlPool = mysql.createPool(config.get('mysql'));
var sesConfig = JSON.parse(JSON.stringify(config.get('ses'))); //aws sdk doesn't like the object from config
mysqlPool.query('SELECT 1 + 1 AS solution', function (error, results, fields) {
if (error) throw error;
});
var transporter = nodemailer.createTransport({
SES: new aws.SES({
apiVersion: '2010-12-01',
region: sesConfig.region,
credentials: sesConfig,
sendingRate: 10
})
});
var s3Config = JSON.parse(JSON.stringify(config.get('s3'))); //aws sdk doesn't like the object from config
var s3 = new aws.S3({
apiVersion: '2010-12-01',
region: s3Config.region,
credentials: s3Config
});
}
router.get(apiPrefix+'/', async (ctx) => {
ctx.type = 'application/json';
ctx.body = {
success: true
}
});
router.get(apiPrefix+'/check', async (ctx) => {
ctx.type = 'application/json';
ctx.body = {
success: true,
data: {
message: 'Hello World'
}
}
});
router.post(apiPrefix+'/confirm', async (ctx) => {
ctx.type = 'application/json';
ctx.body = {
success: false
}
var [docRequest] = await mysqlPool.execute('SELECT * FROM docs WHERE token = ?', [ctx.request.body.token]);
if (docRequest.length == 0){
logError('doc not found', ctx.request.body.token);
ctx.body.error = 'notfound';
ctx.status = 404;
return;
}
docRequest = docRequest[0];
if (docRequest.status != 'unconfirmed'){
logError('doc already confirmed', ctx.request.body.token);
ctx.body.error = docRequest.status;
ctx.status = 400;
return;
}
docRequest.sender = JSON.parse(docRequest.sender);
if (docRequest.stripeCustomer){
if (docRequest.plan == 'monthly'){
try {
const subscription = await stripe.subscriptions.create({
customer: docRequest.stripeCustomer,
trial_from_plan: true,
items: [{
plan: config.get('stripe').plans.monthly
}]
});
console.log(subscription.id);
const [insertSubsription] = await mysqlPool.query('INSERT into stripe_subscriptions SET ?', {
subscription_id: subscription.id,
doc_id: docRequest.id,
email: docRequest.sender.email,
ctime: parseInt(+new Date()/1000)
});
}
catch (e){
logError('stripe', e);
ctx.body.error = 'stripe';
ctx.status = 400;
sendToSlack('stripe', 'Coud not subscribe customer '+docRequest.stripeCustomer);
return;
}
} else {
try {
const charge = await stripe.charges.create({
customer: docRequest.stripeCustomer,
amount: 100,
currency: 'USD',
description: 'BlockSig - Pay as you go Fee',
statement_descriptor: 'BlockSig.app',
capture: false
});
console.log(charge.id);
const [insertCharge] = await mysqlPool.query('INSERT into stripe_charges SET ?', {
charge_id: charge.id,
doc_id: docRequest.id,
email: docRequest.sender.email,
ctime: parseInt(+new Date()/1000)
});
}
catch (e){
logError('stripe', e);
ctx.body.error = 'stripe';
ctx.status = 400;
sendToSlack('stripe', 'Coud not charge customer '+docRequest.stripeCustomer);
return;
}
}
}
const [confirmDoc] = await mysqlPool.query('UPDATE docs SET status="confirmed" WHERE id = ?', docRequest.id);
docRequest.signers = JSON.parse(docRequest.signers);
var signerHashes = [];
for (i in docRequest.signers){
let token = uuidv4();
let address = privateToAccount(sha3.keccak256(docRequest.token+docRequest.signers[i].email)).address.toLowerCase();
var [insertSigner] = await mysqlPool.query('INSERT into requests SET ?', {
token: token,
doc_id: docRequest.id,
address: address.substr(2),
signer_id: i
});
if (!docRequest.notarize || docRequest.signers[i].email != docRequest.sender.email){
signerHashes.push(address);
}
}
var response;
try {
var network;
switch (docRequest.plan){
case 'free':
network = 'testnet';
break;
default:
network = 'mainnet';
break;
}
response = await request.post({
url: ethvigil_api[network].prefix+'/createDoc',
headers: {'x-api-key': ethvigil_api[network].key},
body: {
hash: '0x'+docRequest.orig_hash,
notarize: (docRequest.notarize == 1),
signers: JSON.stringify(signerHashes)
},
json: true
});
}
catch (e){
logError('ethvigil', e);
ctx.body.error = 'ethvigil';
ctx.status = 400;
return;
}
if (!response.success){
logError('ethvigil', response);
ctx.body.error = 'ethvigil';
ctx.status = 400;
return;
}
const [txDoc] = await mysqlPool.query('UPDATE docs SET txHash=? WHERE id = ?', [response.data[0].txHash.substr(2), docRequest.id]);
body = {
success: true
}
});
router.post(apiPrefix+'/notarize', async (ctx) => {
ctx.type = 'application/json';
ctx.body = {
success: false
}
var [docRequest] = await mysqlPool.execute('SELECT * FROM docs WHERE token = ?', [ctx.request.body.token]);
if (docRequest.length == 0){
logError('doc not found', ctx.request.body.token);
ctx.body.error = 'notfound';
ctx.status = 404;
return;
}
docRequest = docRequest[0];
if (docRequest.status != 'pendingnotary'){
logError('doc already notarized', ctx.request.body.token, docRequest.status);
ctx.body.error = docRequest.status;
ctx.status = 400;
return;
}
docRequest.sender = JSON.parse(docRequest.sender);
docRequest.signers = JSON.parse(docRequest.signers);
docRequest.signatures = JSON.parse(docRequest.signatures);
var network;
switch (docRequest.plan){
case 'free':
network = 'testnet';
break;
default:
network = 'mainnet';
break;
}
/*
var params = {
Bucket: config.get('s3').bucket,
Key: 'bsfiles/'+docRequest.token+'.pdf'
};
var s3Response = await s3.getObject(params).promise();
*/
const signedFile = await spaceClient.openFile({
path: docRequest.token+'.pdf',
});
var writer = new streams.WritableStream();
//var reader = new hummus.PDFRStreamForBuffer(new Buffer(s3Response.Body));
var reader = new hummus.PDFRStreamForBuffer(await readFile(signedFile.getLocation()));
var pdfWriter = hummus.createWriterToModify(reader, new hummus.PDFStreamForResponse(writer));
var [signatureBlocks] = await mysqlPool.execute('SELECT signer_id, token, btime FROM requests WHERE doc_id = ?', [docRequest.id]);
for (var i=0; i<signatureBlocks.length; i++){
docRequest.signers[signatureBlocks[i].signer_id].token = signatureBlocks[i].token;
docRequest.signers[signatureBlocks[i].signer_id].btime = signatureBlocks[i].btime;
}
var pageModifier = new hummus.PDFPageModifier(pdfWriter,0);
var pageTop = pdfWriter.getModifiedFileParser().parsePage(0).getMediaBox()[3];
var sortedSigs = {};
for (i in docRequest.signatures){
if (sortedSigs[docRequest.signatures[i].page-1] == undefined){
sortedSigs[docRequest.signatures[i].page-1] = [];
}
sortedSigs[docRequest.signatures[i].page-1].push(docRequest.signatures[i]);
}
var textOptions = {
font: pdfWriter.getFontForFile(__dirname + '/arial.ttf'),
size: 8,
colorspace: 'gray',
color: 0x00,
};
for (i in sortedSigs) {
pageModifier = new hummus.PDFPageModifier(pdfWriter, parseInt(i), true);
for (j in sortedSigs[i]){
var left = parseInt(sortedSigs[i][j].position.left/1.5);
var top = parseInt(pageTop-53-sortedSigs[i][j].position.top/1.5);
/*
params = {
Bucket: config.get('s3').bucket,
Key: 'bsfiles/'+docRequest.signers[sortedSigs[i][j].signer].token+'.png'
};
s3Response = await s3.getObject(params).promise();
//#FIXME Need to switch to FormXObject so we can use memory streams instead of files here
await writeFile(os.tmpdir()+'/'+docRequest.signers[sortedSigs[i][j].signer].token+'.png', new Buffer(s3Response.Body));
*/
const openFileRes = await spaceClient.openFile({
path: docRequest.signers[sortedSigs[i][j].signer].token+'.png'
});
await writeFile(os.tmpdir()+'/'+docRequest.signers[sortedSigs[i][j].signer].token+'.png', await readFile(openFileRes.getLocation()));
pageModifier.startContext().getContext().drawImage(left, top, os.tmpdir()+'/'+docRequest.signers[sortedSigs[i][j].signer].token+'.png', {
transformation: {
width: 160,
height: 53
}
});
textOptions.size = 8;
top -= 6;
pageModifier.startContext().getContext().writeText(docRequest.signers[sortedSigs[i][j].signer].name, left, top, textOptions);
textOptions.size = 6;
top -= 5;
pageModifier.startContext().getContext().writeText(docRequest.signers[sortedSigs[i][j].signer].email, left, top, textOptions);
pageModifier.endContext().writePage();
fs.unlink(os.tmpdir()+'/'+docRequest.signers[sortedSigs[i][j].signer].token+'.png', (err) => {
if (err){
logError('file delete', err);
}
});
}
}
pageModifier = new hummus.PDFPageModifier(pdfWriter, pdfWriter.getModifiedFileParser().getPagesCount()-1);
var y = 755;
var x = 25;
for (i in docRequest.signers){
textOptions.size = 12;
pageModifier.startContext().getContext().writeText('Document Signed by '+docRequest.signers[i].name+'('+docRequest.signers[i].email+')', x, y, textOptions);
y -= 15;
textOptions.size = 8;
pageModifier.startContext().getContext().writeText('Timestamp: '+(new Date(docRequest.signers[i].btime*1000)), x, y, textOptions);
y -= 35;
if (y < 50){
//Run out of space on page, let's create a new one
pageModifier.endContext().writePage();
var page = pdfWriter.createPage(0,0,595,842);
pdfWriter.writePage(page);
pdfWriter.end();
reader = new hummus.PDFRStreamForBuffer(writer.toBuffer());
writer = new streams.WritableStream();
pdfWriter = hummus.createWriterToModify(reader, new hummus.PDFStreamForResponse(writer));
textOptions = {
font: pdfWriter.getFontForFile(__dirname + '/arial.ttf'),
size: 12,
colorspace: 'gray',
color: 0x00,
};
pageModifier = new hummus.PDFPageModifier(pdfWriter, pdfWriter.getModifiedFileParser().getPagesCount()-1);
y = 755;
}
}
textOptions.size = 12;
pageModifier.startContext().getContext().writeText('Document Notarized by '+docRequest.sender.name+'('+docRequest.sender.email+')', x, y, textOptions);
y -= 15;
textOptions.size = 8;
pageModifier.startContext().getContext().writeText('Timestamp: '+(new Date()), x, y, textOptions);
y -= 35;
textOptions.size = 14;
pageModifier.startContext().getContext().writeText('Verfication - '+config.get('frontend_prefix')+'/verify.html', x, y, textOptions);
pageModifier.endContext().writePage();
var infoDictionary = pdfWriter.getDocumentContext().getInfoDictionary();
infoDictionary.creator = 'BlockSig_'+docRequest.token;
infoDictionary.addAdditionalInfoEntry('BlockSigData', JSON.stringify({
token: docRequest.token,
ethvigil_api_prefix: ethvigil_api[network].prefix,
sender: docRequest.sender,
signers: docRequest.signers
}));
pdfWriter.end();
writer = writer.toBuffer()
const finalHash = sha3.keccak256(writer);
/*
//store the file on S3
var params = {
Bucket: config.get('s3').bucket,
Key: 'bsfiles/'+docRequest.token+'_signed.pdf',
Body: writer
};
var s3Response = await s3.putObject(params).promise();
*/
await writeFile(os.tmpdir()+'/'+docRequest.token+'_signed.pdf', writer);
try {
await spaceClient.addItems({
targetPath: '/',
sourcePaths: [os.tmpdir()+'/'+docRequest.token+'_signed.pdf']
});
}
catch (e){
logError('space', e);
ctx.body.error = 'space';
ctx.status = 400;
return;
}
const [signedDoc] = await mysqlPool.query('UPDATE docs SET status="signed" WHERE id = ?', docRequest.id);
var response = await request.post({
url: ethvigil_api[network].prefix+'/finalizeDoc',
headers: {'x-api-key': ethvigil_api[network].key},
form: {
originalHash: '0x'+docRequest.orig_hash,
finalHash: '0x'+finalHash
},
json: true
});
if (!response.success){
logError('ethvigil', response);
ctx.body.error = 'ethvigil';
ctx.status = 400;
return;
}
ctx.body = {
success: true
}
});
router.post(apiPrefix+'/submit', async (ctx) => {
ctx.type = 'application/json';
ctx.body = {
success: false
}
ctx.request.body = JSON.parse(ctx.request.body.json);
const docToken = uuidv4();
if (ctx.request.body.stripeToken){
try {
const customer = await stripe.customers.create({
source: ctx.request.body.stripeToken,
description: 'Document Token - '+docToken,
email: ctx.request.body.sender.email
});
ctx.request.body.stripeToken = customer.id;
sendToSlack('stripe', 'Paid signup ('+ctx.request.body.plan+') from '+ctx.request.body.sender.email);
}
catch (e){
logError('stripe', e);
ctx.body.error = 'stripe';
ctx.status = 400;
return;
}
} else {
// we can ignore recaptcha if we have stripe token
if (config.get('recaptcha')){
var response = await request.post({url: 'https://www.google.com/recaptcha/api/siteverify', form: {
secret: config.get('recaptcha'),
response: ctx.request.body.recaptchaToken,
remoteip: ctx.ip
}});
response = JSON.parse(response);
if (!response.success){
logError('recaptcha', response);
ctx.body.error = 'recaptcha';
ctx.status = 400;
return;
}
ctx.request.body.plan = 'free';
}
}
var network, mailPrefix = '';
switch (ctx.request.body.plan){
case 'free':
network = 'testnet';
mailPrefix = '] [Testnet';
break;
default:
network = 'mainnet';
break;
}
var writer = new streams.WritableStream();
var reader = new hummus.PDFRStreamForBuffer(await readFile(ctx.request.files.document.path));
var pdfWriter = hummus.createWriterToModify(reader, new hummus.PDFStreamForResponse(writer));
var page = pdfWriter.createPage(0,0,595,842);
var cxt = pdfWriter.startPageContentContext(page);
var textOptions = {
font: pdfWriter.getFontForFile(__dirname + '/arial.ttf'),
size: 14,
colorspace: 'gray',
color: 0x00,
};
cxt.writeText('BlockSig Document ID: '+docToken, 25, 805, textOptions);
var infoDictionary = pdfWriter.getDocumentContext().getInfoDictionary();
infoDictionary.creator = 'BlockSig_'+docToken;
infoDictionary.addAdditionalInfoEntry('BlockSigData', JSON.stringify({
token: docToken,
ethvigil_api_prefix: ethvigil_api[network].prefix,
sender: ctx.request.body.sender,
signers: ctx.request.body.signers
}));
pdfWriter.writePage(page);
pdfWriter.end();
writer = writer.toBuffer()
const origHash = sha3.keccak256(writer);
console.log('got hash for', docToken, origHash)
await writeFile(os.tmpdir()+'/'+docToken+'.pdf', writer);
const stream = await spaceClient.addItems({
targetPath: '/', // path in the bucket to be saved
sourcePaths: [os.tmpdir()+'/'+docToken+'.pdf']
});
console.log('uploaded to space daemon');
/*
stream.on('data', (data) => {
console.log('data: ', data);
});
stream.on('error', (error) => {
console.error('error: ', error);
});
stream.on('end', () => {
console.log('end');
});
*/
/*
//store the file on S3
const params = {
Bucket: config.get('s3').bucket,
Key: 'bsfiles/'+docToken+'.pdf',
Body: writer
};
const s3Response = await s3.putObject(params).promise();
*/
const [insertDoc] = await mysqlPool.query('INSERT into docs SET ?', {
//url: config.get('s3').bucket+'//bsfiles/'+docToken+'.pdf',
url: config.get('spaceDaemon').defaultBucket+'/'+docToken+'.pdf',
name: ctx.request.body.docName,
orig_hash: origHash,
token: docToken,
signers: JSON.stringify(ctx.request.body.signers),
plan: ctx.request.body.plan,
stripeCustomer: ctx.request.body.stripeToken,
signatures: JSON.stringify(ctx.request.body.signatures),
sender: JSON.stringify(ctx.request.body.sender),
notarize: ctx.request.body.notarize,
ctime: parseInt(+new Date()/1000)
});
//send out email to sender for confirmation
var _html = await readFile(__dirname+'/emails/confirm.html');
_html = _html.toString().replace('__name__', ctx.request.body.sender.name).replace('__confirmUrl__', config.get('frontend_prefix')+'/confirm.html?'+docToken);
var mailOptions = {
from: sesConfig.from,
to: ctx.request.body.sender.email,
subject: (config.get('dev') ? 'DEV - ' : '')+'[BlockSig'+mailPrefix+'] Confirm Request for - '+ctx.request.body.docName,
text: config.get('frontend_prefix')+'/confirm.html?'+docToken,
html: _html
//html: '<p>'+config.get('frontend_prefix')+'/confirm.html?'+docToken+'</p>'
};
transporter.sendMail(mailOptions, (error, info) => {
if (error){
logError('email', error);
} else {
console.log(info);
}
});
//delete the uploaded file
fs.unlink(os.tmpdir()+'/'+docToken+'.pdf', (err) => {
if (err){
logError('file delete', error);
}
});
fs.unlink(ctx.request.files.document.path, (err) => {
if (err){
logError('file delete', error);
}
});
ctx.body = {
success: true
}
});
router.get(apiPrefix+'/viewDoc/:token', async (ctx) => {
ctx.type = 'application/json';
ctx.body = {
success: false
}
var [docRequest] = await mysqlPool.execute('SELECT * FROM docs WHERE token = ?', [ctx.params.token]);
if (docRequest.length == 0){
logError('Missing document', ctx.params.token);
ctx.body.error = 'notfound';
ctx.status = 404;
return;
}
docRequest = docRequest[0];
if (docRequest.status == 'canceled'){
logError('Canceled document', ctx.params.token);
ctx.body.error = docRequest.status;
ctx.status = 400;
return;
}
/*
const params = {
Bucket: config.get('s3').bucket,
Key: 'bsfiles/'+docRequest.token+'.pdf'
};
try {
const s3Response = await s3.getObject(params).promise();
ctx.type = 'application/pdf';
ctx.body = new Buffer(s3Response.Body);
}
catch (e){
logError('s3', e);
ctx.body.error = 'notfound';
ctx.status = 400;
return;
}
*/
const openFileRes = await spaceClient.openFile({
path: ctx.params.token+'.pdf',
});
const location = openFileRes.getLocation();
console.log(location);
ctx.type = 'application/pdf';
ctx.body = await readFile(location);
});
router.get(apiPrefix+'/getDoc/:token', async (ctx) => {
ctx.type = 'application/json';
ctx.body = {
success: false
}
const sigRequest = await getSigRequest(ctx, ctx.params.token);
if (!sigRequest){
return;
}
/*
const params = {
Bucket: config.get('s3').bucket,
Key: 'bsfiles/'+sigRequest.doc_token+'.pdf'
};
try {
const s3Response = await s3.getObject(params).promise();
ctx.type = 'application/pdf';
ctx.body = new Buffer(s3Response.Body);
}
catch (e){
logError('S3', e);
ctx.body.error = 'notfound';
ctx.status = 400;
return;
}
*/
const openFileRes = await spaceClient.openFile({
path: sigRequest.doc_token+'.pdf',
});
const location = openFileRes.getLocation();
console.log(location);
ctx.type = 'application/pdf';
ctx.body = await readFile(location);
});
router.get(apiPrefix+'/getSignatures/:token', async (ctx) => {
ctx.type = 'application/json';
ctx.body = {
success: false
}
const sigRequest = await getSigRequest(ctx, ctx.params.token);
if (!sigRequest){
return;
}
ctx.body = {
success: true,
data: {
signer_id: sigRequest.signer_id,
signers: JSON.parse(sigRequest.signers),
signatures: JSON.parse(sigRequest.signatures)
}
}
});
router.post(apiPrefix+'/sign', async (ctx) => {
ctx.type = 'application/json';
ctx.body = {
success: false
}
const sigRequest = await getSigRequest(ctx, ctx.request.body.token);
if (!sigRequest){
return;
}
sigRequest.signers = JSON.parse(sigRequest.signers);
var response;
var network;
switch (sigRequest.plan){
case 'free':
network = 'testnet';
break;
default:
network = 'mainnet';
break;
}
ctx.request.body.signatureData = new Buffer(ctx.request.body.signatureData.replace(/^data:image\/png;base64,/, ""), 'base64');
var notarized = sigRequest.notarize && sigRequest.signer_id == 0;
try {
response = await request.post({
url: ethvigil_api[network].prefix+'/sign',
headers: {'x-api-key': ethvigil_api[network].key},
body: {
hash: '0x'+sigRequest.orig_hash,
signatureHash: '0x'+sha3.keccak256(ctx.request.body.signatureData),
notarized: notarized,
signer: privateToAccount(sha3.keccak256(sigRequest.doc_token+sigRequest.signers[sigRequest.signer_id].email)).address.toLowerCase()
},
json: true
});
}
catch (e){
logError('ethvigil', e);
ctx.body.error = 'ethvigil';
ctx.status = 400;
return;
}
if (!response.success){
logError('ethvigil', response);
ctx.body.error = 'ethvigil';
ctx.status = 400;
return;
}
const [sign] = await mysqlPool.query('UPDATE requests SET ? WHERE id = ?', [{
txHash: response.data[0].txHash.substr(2),
status: 'signed',
stime: parseInt(+new Date()/1000)
}, sigRequest.id]);
/*
//store the signature on S3
const params = {
Bucket: config.get('s3').bucket,
Key: 'bsfiles/'+sigRequest.token+'.png',
Body: new Buffer(ctx.request.body.signatureData, 'base64')
};
try {
const s3Response = await s3.putObject(params).promise();
}
catch (e){
logError('s3', e);
ctx.body.error = 's3';
ctx.status = 400;
return;
}
*/
await writeFile(os.tmpdir()+'/'+sigRequest.token+'.png', ctx.request.body.signatureData)
const stream = await spaceClient.addItems({
targetPath: '/',
sourcePaths: [os.tmpdir()+'/'+sigRequest.token+'.png']
});
ctx.body = {
success: true,
notarized: notarized,
data: ctx.request.body
}
});
router.get(apiPrefix+'/view/:token', async (ctx) => {
ctx.type = 'application/json';
ctx.body = {
success: false
}
var [docRequest] = await mysqlPool.execute('SELECT * FROM docs WHERE token = ?', [ctx.params.token]);
if (docRequest.length == 0){
logError('Missing document', ctx.params.token);
ctx.body.error = 'notfound';
ctx.status = 404;
return;
}
docRequest = docRequest[0];
if (docRequest.status == 'canceled'){
logError('Document Canceled', ctx.params.token);
ctx.body.error = docRequest.status;
ctx.status = 400;
return;
}
docRequest.signers = JSON.parse(docRequest.signers);
docRequest.signatures = JSON.parse(docRequest.signatures);
ctx.body = {
success: true,
data: docRequest
}
})
router.post(apiPrefix+'/hook', async (ctx) => {
ctx.type = 'application/json';
if (ctx.request.body.data){
console.log('hook registration');
ctx.body = {
success: true
}
return;
}
if (!ctx.request.body.event_name){
if (!ctx.request.body.status){
logError('transaction failed', ctx.request.body.txHash);
var [docRequest] = await mysqlPool.execute('SELECT * FROM docs WHERE txHash = ?', [ctx.request.body.txHash.substr(2)]);
if (docRequest.length > 0){
logError('ethvigil tx error for doc?', ctx.request.body.txHash);
return;
}
var [sigRequest] = await mysqlPool.execute('SELECT sr.*, d.name as docName, d.url, d.orig_hash, d.token as doc_token, d.sender, d.signatures, d.signers, d.notarize FROM requests as sr, docs as d WHERE sr.txHash = ? AND d.id=sr.doc_id', [ctx.request.body.txHash.substr(2)]);
if (sigRequest.length > 0){
sigRequest = sigRequest[0];
if (sigRequest.prevHash){
logError('sig failed previously, investigate', sigRequest);
ctx.body = {
success: true
}
return;
}
logError('failed tx for sig', sigRequest[0].id);
sigRequest.signers = JSON.parse(sigRequest.signers);
var network;
switch (sigRequest.plan){
case 'free':
network = 'testnet';
break;
default:
network = 'mainnet';
break;
}
var response = await request.post({
url: ethvigil_api[network].prefix+'/sign',
headers: {'x-api-key': ethvigil_api[network].key},
form: {
hash: '0x'+sigRequest.orig_hash,
signer: privateToAccount(sha3.keccak256(sigRequest.doc_token+sigRequest.signers[sigRequest.signer_id].email)).address.toLowerCase()
}
});
response = JSON.parse(response);
if (!response.success){
logError('ethvigil error', response);
ctx.body.error = 'ethvigil';
ctx.status = 400;
return;
}
const [sign] = await mysqlPool.query('UPDATE requests SET ? WHERE id = ?', [{
txHash: response.data[0].txHash.substr(2),
prevHash: sigRequest.txHash,
stime: parseInt(+new Date()/1000)
}, sigRequest.id]);
return;
}
logError('found no matching hashes', ctx.request.body.txHash);
} else {
console.log('transaction got mined', ctx.request.body.txHash);
}
ctx.body = {
success: true
}
return;
}
ctx.body = {
success: false
}
var [docRequest] = await mysqlPool.execute('SELECT * FROM docs WHERE orig_hash = ?', [ctx.request.body.event_data ? ctx.request.body.event_data.hash.substr(2) : '']);
if (docRequest.length == 0){
logError('unknown hash', ctx.request.body.txHash);
ctx.body.error = 'unknown hash';
return;
}
console.log('eventName', ctx.request.body.event_name);
docRequest = docRequest[0];
docRequest.sender = JSON.parse(docRequest.sender);
docRequest.signers = JSON.parse(docRequest.signers);
docRequest.signatures = JSON.parse(docRequest.signatures);
var network, mailPrefix = '';
switch (docRequest.plan){
case 'free':
network = 'testnet';
mailPrefix = '] [Testnet';
break;
default:
network = 'mainnet';
break;
}
switch (ctx.request.body.event_name){
case 'Signature':
console.log('doc signature propagated', docRequest.token)
var [sigRequest] = await mysqlPool.query('UPDATE requests SET btime= ?, status="propagated" WHERE doc_id = ? AND address = ?', [parseInt(+new Date()/1000), docRequest.id, ctx.request.body.event_data.signer.toLowerCase().substr(2)]);
break;
case 'Created':
let signerLength = Object.keys(docRequest.signers).length;
if (signerLength == 0){
/*
var params = {
Bucket: config.get('s3').bucket,
Key: 'bsfiles/'+docRequest.token+'.pdf'
};
var s3Response = await s3.getObject(params).promise();
*/
const openFileRes = await spaceClient.openFile({
path: docRequest.token+'.pdf'
});
var _html = await readFile(__dirname+'/emails/completed.html');
_html = _html.toString().replace('__name__', docRequest.sender.name).replace('__verifyUrl__', config.get('frontend_prefix')+'/verify.html?');
var mailOptions = {
from: sesConfig.from,
to: docRequest.sender.email,
subject: (config.get('dev') ? 'DEV - ' : '')+'[BlockSig'+mailPrefix+'] Document Ready - '+docRequest.name,
text: 'The [attached] document is now on the blockchain. Visit the following URL to verify proof: '+config.get('frontend_prefix')+'/verify.html',
html: _html,
attachments: [
{
filename: docRequest.name.replace('.', '')+'.pdf',
content: await readFile(openFileRes.getLocation())
//content: new Buffer(s3Response.Body)
}
]
};
transporter.sendMail(mailOptions, (error, info) => {
if (error){
logError('email', error);
} else {
console.log(info);
}
});
docRequest.status = 'signed';
} else {
for (i in docRequest.signers){
if (docRequest.notarize && docRequest.signers[i].email == docRequest.sender.email){
continue;
}
var [sigRequest] = await mysqlPool.query('SELECT token FROM requests WHERE doc_id = ? AND signer_id = ?', [docRequest.id, i])
if (sigRequest.length == 0){
logError('no sigrequest', docRequest.id+' - '+i);
break;
}
var token = sigRequest[0].token;
var _html = await readFile(__dirname+'/emails/sign.html');
_html = _html.toString().replace('__name__', docRequest.signers[i].name).replace('__senderName__', docRequest.sender.name).replace('__senderEmail__', docRequest.sender.email).replace('__signUrl__', config.get('frontend_prefix')+'/sign.html?'+token);
var mailOptions = {
from: sesConfig.from,
to: docRequest.signers[i].email,
subject: (config.get('dev') ? 'DEV - ' : '')+'[BlockSig'+mailPrefix+'] Signature Request for - '+docRequest.name,
text: docRequest.sender.name+' ('+docRequest.sender.email+') has sent a document to e-sign via BlockSig: '+config.get('frontend_prefix')+'/sign.html?'+token,
html: _html
};
transporter.sendMail(mailOptions, (error, info) => {
if (error){
logError('email', error);
} else {
console.log(info);
}
});
}
if (!docRequest.notarize || signerLength != 1){
docRequest.status = 'pending';
}
}
if (docRequest.status != 'confirmed'){
const [confirmDoc] = await mysqlPool.query('UPDATE docs SET status="'+docRequest.status+'" WHERE id = ?', docRequest.id);
break;
}
console.log('skipping to notarization step');
case 'Notarized':
case 'Signed':
if (ctx.request.body.event_name == 'Notarized'){
const [signedDoc] = await mysqlPool.query('UPDATE docs SET status="notarized" WHERE id = ?', docRequest.id);
} else {
if (docRequest.notarize){
var [sigRequest] = await mysqlPool.query('SELECT token FROM requests WHERE doc_id = ? AND signer_id = 0', [docRequest.id])
if (sigRequest.length == 0){
logError('no sigrequest for sender', docRequest.id);
break;
}
sigRequest = sigRequest[0];
console.log('requires notarization');
var _html = await readFile(__dirname+'/emails/notarize.html');
_html = _html.toString().replace('__name__', docRequest.sender.name).replace('__notarizeUrl__', config.get('frontend_prefix')+'/sign.html?'+sigRequest.token);
const [pendingnotary] = await mysqlPool.query('UPDATE docs SET status="pendingnotary" WHERE id = ?', docRequest.id);
var mailOptions = {
from: sesConfig.from,
to: docRequest.sender.email,
subject: (config.get('dev') ? 'DEV - ' : '')+'[BlockSig'+mailPrefix+'] Notarization Request for - '+docRequest.name,
text: config.get('frontend_prefix')+'/notarize.html?'+docRequest.token,
html: _html
};
transporter.sendMail(mailOptions, (error, info) => {
if (error){
logError('email', error);
} else {
console.log(info);
}
});
break;
}
const [signedDoc] = await mysqlPool.query('UPDATE docs SET status="signed" WHERE id = ?', docRequest.id);
}
/*
var params = {
Bucket: config.get('s3').bucket,
Key: 'bsfiles/'+docRequest.token+'.pdf'
};
var s3Response = await s3.getObject(params).promise();
*/
const signedFile = await spaceClient.openFile({
path: docRequest.token+'.pdf',
});
var writer = new streams.WritableStream();
//var reader = new hummus.PDFRStreamForBuffer(new Buffer(s3Response.Body));
var reader = new hummus.PDFRStreamForBuffer(await readFile(signedFile.getLocation()));
var pdfWriter = hummus.createWriterToModify(reader, new hummus.PDFStreamForResponse(writer));
var [signatureBlocks] = await mysqlPool.execute('SELECT signer_id, token, btime FROM requests WHERE doc_id = ?', [docRequest.id]);
for (var i=0; i<signatureBlocks.length; i++){
docRequest.signers[signatureBlocks[i].signer_id].token = signatureBlocks[i].token;
docRequest.signers[signatureBlocks[i].signer_id].btime = signatureBlocks[i].btime;
}
var pageModifier = new hummus.PDFPageModifier(pdfWriter,0);
var pageTop = pdfWriter.getModifiedFileParser().parsePage(0).getMediaBox()[3];
var sortedSigs = {};
for (i in docRequest.signatures){
if (sortedSigs[docRequest.signatures[i].page-1] == undefined){
sortedSigs[docRequest.signatures[i].page-1] = [];
}
sortedSigs[docRequest.signatures[i].page-1].push(docRequest.signatures[i]);
}
var textOptions = {
font: pdfWriter.getFontForFile(__dirname + '/arial.ttf'),
size: 8,
colorspace: 'gray',
color: 0x00,