forked from cashonize/legacy-wallet
-
Notifications
You must be signed in to change notification settings - Fork 0
/
cash-connect.js
406 lines (345 loc) · 12.2 KB
/
cash-connect.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
// Import Wallet Connect
import { CashConnectWallet } from 'cashconnect';
// Import Libauth.
import { stringify, authenticationTemplateP2pkhNonHd, binToHex, hexToBin, binToNumberUintLE, cashAddressToLockingBytecode, decodePrivateKeyWif, lockingBytecodeToCashAddress } from "@bitauth/libauth";
// Import Vue.
import { createApp } from 'vue/dist/vue.esm-browser.js'
//-----------------------------------------------------------------------------
// Setup Utilities
//-----------------------------------------------------------------------------
async function getPrivateKey() {
const wallet = await walletClass.named("mywallet")
const privateKeyWif = wallet.privateKeyWif;
const decodeResult = decodePrivateKeyWif(privateKeyWif);
if (typeof decodeResult === "string") {
throw new Error(decodeResult);
}
const privateKey = decodeResult.privateKey;
return privateKey;
}
//-----------------------------------------------------------------------------
// Setup Vue
//-----------------------------------------------------------------------------
// WalletConnect Tab (CashConnect Section).
window.cashConnectSessions = createApp({
data() {
return {
// List of Sessions.
sessions: {},
}
},
methods: {
disconnectSession: async function(topic) {
await window.cashConnectService.disconnectSession(topic);
},
onSessionsUpdated: async function(sessions) {
this.sessions = sessions;
},
}
}).mount('#cashconnect-sessions-vue');
// CashConnect Dialogs.
window.cashConnectDialogs = createApp({
data() {
return {
// List of Modals displaying for Session Requests.
sessionRequests: [],
// List of Modals displaying for RPC Requests.
rpcRequests: [],
// List of Modals displaying for Errors.
errors: [],
// Auto-approved methods.
autoApprove: ['wc_authRequest', 'bch_getTokens_V0', 'bch_getBalance_V0', 'bch_getChangeLockingBytecode_V0'],
}
},
computed: {
isSessionApprovalVisible: function() {
return this.sessionRequests.length ? true : false;
},
isRequestApprovalVisible: function() {
return this.rpcRequests.length ? true : false;
},
isErrorsVisible: function() {
return this.errors.length ? true : false;
},
},
methods: {
pair: async function(wcUri) {
// Pair with the service.
await window.cashConnectService.core.pairing.pair({ uri: wcUri });
},
viewTemplate: function(template) {
// Your JSON data
const jsonData = JSON.stringify(template, null, 2);
// Create a new HTML document with the JSON data
const newDoc = document.implementation.createHTMLDocument();
const pre = newDoc.createElement('pre');
pre.textContent = jsonData;
newDoc.body.appendChild(pre);
// Open a new tab with the data URL
const newTab = window.open();
newTab.document.write('<html><head><title>JSON Data</title></head><body><pre>' + jsonData + '</pre></body></html>');
newTab.document.close();
},
//-----------------------------------------------------------------------------
// UI Approvals
//-----------------------------------------------------------------------------
showApprovalModal: async function(modalType, data, onAccept) {
const approval = new Promise(async (resolve, reject) => {
// Generate a random ID so that we can find this dialog in our list of visible dialogs.
// NOTE: Typically, a full-featured framework would have its own Dialog function so this wouldn't be necessary.
// However, I'm using Pat's HTML (albeit slightly modified) so am going to keep with his approach.
const thisModalId = Math.floor(Math.random() * 1_000_000);
// Push onto our list of session requests.
// NOTE: We support more than one session request in UI at once.
this[modalType].push({
// Arbitrary data we are passing to modal.
...data,
// Modal-specific
modalId: thisModalId,
accept: async () => {
// Remove this request from our list of requests.
this[modalType] = this[modalType].filter((modal) => modal.modalId !== thisModalId );
// Execute the onAccept callback.
if (onAccept) {
resolve(await onAccept());
} else {
resolve();
}
},
reject: async () => {
// Remove this request from our list of requests.
this[modalType] = this[modalType].filter((modal) => modal.modalId !== thisModalId);
// Reject the promise with an error.
reject('User rejected')
},
});
});
return approval;
},
onSessionProposal: async function(sessionProposal) {
// NOTE: The walletClass.network property appears to return quirky values (e.g. undefined).
// So we use the networkPrefix property to determine which chain we are currently on.
const currentChain = window.walletClass.networkPrefix;
const targetChain = sessionProposal.params.requiredNamespaces.bch.chains[0].replace('bch:', '');
// Cashonize expects network to be either mainnet or chipnet.
const targetChainCashonizeFormat = (targetChain === 'bitcoincash') ? 'mainnet' : 'chipnet';
// Check if the current chain is the target chain.
if(currentChain !== targetChain) {
// If it is not, prompt user to switch.
if (!confirm(`Dapp requires ${targetChain}, but you are using ${currentChain}. Would you like to switch to ${targetChain}?`)) {
throw new Error(`Wallet is using ${currentChain}: ${targetChain} required`);
}
// Switch if user answered yes to prompt.
changeNetwork({ target: { value: targetChainCashonizeFormat } });
changeView(4);
}
// Show a modal to approve the session request.
return this.showApprovalModal('sessionRequests', {
session: sessionProposal,
}, async () => {
return {
autoApprove: this.autoApprove
}
});
},
onRPCRequest: async function(session, request, response) {
// If this method is not whitelisted...
if(!this.autoApprove.includes(request.method)) {
// Show a modal to approve the RPC Request.
return this.showApprovalModal('rpcRequests', {
method: request.method,
session,
params: request.params,
response,
});
}
},
onError: async function(error) {
// Print error to console first in case something goes wrong in render.
console.error(error);
// Show the error in a dialog.
return this.showApprovalModal('errors', {
error
});
},
//-----------------------------------------------------------------------------
// Formatting Utils
//-----------------------------------------------------------------------------
formatBin(bin) {
return binToHex(bin);
},
formatSessionSigner(session) {
return session?.namespaces?.['bch']?.accounts?.[0] || 'Unable to display signer';
},
formatScriptName(scriptId, template) {
return template?.scripts?.[scriptId]?.name || scriptId;
},
formatDataName(dataId, template) {
return template?.entities?.common?.variables?.[dataId]?.name || dataId;
},
formatDataValue(value, dataId, template) {
const type = template?.entities?.common?.variables?.[dataId]?.description;
switch (type) {
case 'lockscript': return this.formatLockscript(value);
case 'number': return binToNumberUintLE(value);
case 'unixTimestamp': return new Date(binToNumberUintLE(value) * 1000).toISOString();
}
return `0x${binToHex(value)}`;
},
formatLockscript(lockingBytecode) {
const result = lockingBytecodeToCashAddress(lockingBytecode, 'bitcoincash');
if (typeof result !== "string") {
return binToHex(lockingBytecode);
}
return result;
},
formatSats(satoshis) {
const numberAmount = Number(satoshis);
if (Math.abs(numberAmount / (10 ** 4)) > 1000) {
const bchAmount = numberAmount * (10 ** -8)
return `${bchAmount.toFixed(8)} BCH`
} else {
return `${numberAmount} Sats`
}
},
stringify(payload) {
return stringify(payload);
}
}
}).mount('#cashconnect-dialogs-vue');
//-----------------------------------------------------------------------------
// Start Wallet Connect
//-----------------------------------------------------------------------------
// NOTE: We have to wait for the wallet to load.
// So this gets called in script.js under loadWalletInfo() (at the very end).
window.initCashConnect = async () => {
const privateKey = await getPrivateKey();
// Setup Wallet Connect.
window.cashConnectService = new CashConnectWallet(
// The master private key.
privateKey,
// Project ID.
'3fd234b8e2cd0e1da4bc08a0011bbf64',
// Metadata.
{
name: 'Cashonize',
description: 'Cashonize BitcoinCash Web Wallet',
url: 'cashonize.com/',
icons: ['https://cashonize.com/images/favicon.ico'],
},
// Event Callbacks.
{
// Session State Callbacks.
onSessionsUpdated: window.cashConnectSessions.onSessionsUpdated,
onSessionProposal: window.cashConnectDialogs.onSessionProposal,
onSessionDelete: () => {},
onRPCRequest: window.cashConnectDialogs.onRPCRequest,
onError: window.cashConnectDialogs.onError,
},
// CashRPC Callbacks.
{
// Network-related callbacks.
network: {
// Get the source output of the given transaction and index.
getSourceOutput: async (outpointTransactionHash, outpointIndex) => {
const wallet = await walletClass.named("mywallet");
const transaction = await wallet.provider.getRawTransactionObject(binToHex(outpointTransactionHash));
const outpoint = transaction.vout[outpointIndex];
let token;
if(outpoint.tokenData) {
token = {
amount: BigInt(outpoint.tokenData.amount),
category: hexToBin(outpoint.tokenData.category),
nft: outpoint.tokenData.nft ? {
capability: outpoint.tokenData.nft.capability,
commitment: outpoint.tokenData.nft.commitment ? hexToBin(outpoint.tokenData.nft.commitment) : undefined,
} : undefined
}
}
const formatted = {
valueSatoshis: BigInt(Math.round(outpoint.value * 100_000_000)),
lockingBytecode: hexToBin(outpoint.scriptPubKey.hex),
token,
}
return formatted;
},
// NOTE: Other callbacks may be supported in future (e.g. Block Height).
},
// Wallet-related callbacks.
wallet: {
// Get the unspents available for this wallet.
getUnspents: async () => {
const wallet = await walletClass.named("mywallet");
const utxos = await wallet.getUtxos();
const privateKey = await getPrivateKey();
const lockingBytecode = cashAddressToLockingBytecode(wallet.cashaddr);
if(typeof lockingBytecode === 'string') {
throw new Error('Failed to convert CashAddr to Locking Bytecode');
}
const transformed = utxos.map((utxo) => {
let token;
if(utxo.token) {
token = {
amount: BigInt(utxo.token.amount),
category: hexToBin(utxo.token.tokenId),
}
if(utxo.token.capability || utxo.token.commitment) {
token.nft = {
capability: utxo.token.capability,
commitment: hexToBin(utxo.token.commitment),
}
}
}
return {
outpointTransactionHash: hexToBin(utxo.txid),
outpointIndex: utxo.vout,
lockingBytecode: lockingBytecode.bytecode,
unlockingBytecode: {
template: authenticationTemplateP2pkhNonHd,
valueSatoshis: BigInt(utxo.satoshis),
script: 'unlock',
data: {
keys: {
privateKeys: {
key: privateKey,
},
},
},
token,
}
}
})
return transformed;
},
// Get the LibAuth change template for this wallet.
getChangeTemplate: async () => {
return {
template: authenticationTemplateP2pkhNonHd,
data: {
keys: {
privateKeys: {
key: await getPrivateKey()
}
}
}
}
},
},
},
);
// Start Wallet Connect.
await window.cashConnectService.start();
// Handle URL.
// NOTE: To differentiate from Pat's implementation, we use protohandler "cc:" (CashConnect:).
// NOTE: "web+cc:" is also supported to support PWA Wallets.
const wcuri = new URL(window.location.href.replace("#", "")).searchParams.get("uri");
if (wcuri && (wcuri.indexOf("cc:") === 0 || wcuri.indexOf('web+cc:') === 0)) {
const pairings = window.cashConnectService.core.pairing.pairings.getAll();
const topic = wcuri.match(/^cc:([a-zA-Z0-9]+).*/)?.[1];
if (pairings.some(val => val.topic === topic)) {
// skip
} else {
window.cashConnectService.pair(wcuri);
}
}
};