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AbstractWalletPlugin,
ChainDefinition,
Checksum256,
LoginContext,
Logo,
PermissionLevel,
PrivateKey,
PublicKey,
ResolvedSigningRequest,
TransactContext,
WalletPluginConfig,
WalletPluginLoginResponse,
WalletPluginMetadata,
WalletPluginSignResponse,
} from '@wharfkit/session'
import {Checksum256Type} from '@wharfkit/antelope'
import {createIdentityRequest} from '@wharfkit/protocol-esr'
import WebSocket from 'isomorphic-ws'
import defaultTranslations from './translations'
import {resolveWebAuthenticatorUrl} from './chains'
import {
AnchorMode,
promptForMode,
promptForRecovery,
readLoginOptions,
readMode,
writeMode,
} from './mode'
import {AnchorRequestCancelledError} from './transports/errors'
import {NativeTransport} from './transports/native'
import {openAuthenticatorWindow, WebTransport} from './transports/web'
import {IdentityRequestBundle, Translator, TransportOptions} from './transports/types'
/** Options controlling Anchor's native and browser transports. */
export interface WalletPluginAnchorOptions {
/** Buoy callback service URL. */
buoyUrl?: string
/** WebSocket override forwarded to Buoy callback handling. */
buoyWs?: WebSocket
/** Extra or replacement web-authenticator URLs keyed by chain ID. */
webAuthenticatorUrls?: Record<string, string>
/** Delay in milliseconds before app login offers the browser fallback. */
webFallbackDelayMs?: number
/** Explicit login route; omit it to ask on each supported-chain login. */
mode?: AnchorMode
/** Buoy and callback overrides forwarded to both transports. */
transport?: Pick<TransportOptions, 'send' | 'waitForCallback' | 'generateReturnUrl'>
}
/** Default delay before app login offers the browser fallback, in milliseconds. */
export const DEFAULT_WEB_FALLBACK_DELAY_MS = 8000
export class WalletPluginAnchor extends AbstractWalletPlugin {
chain: Checksum256 | undefined
auth: PermissionLevel | undefined
requestKey: PublicKey | undefined
privateKey: PrivateKey | undefined
signerKey: PublicKey | undefined
channelUrl: string | undefined
channelName: string | undefined
buoyUrl: string
buoyWs: WebSocket | undefined
webAuthenticatorUrls: Record<string, string>
webFallbackDelayMs: number
private native: NativeTransport
private web: WebTransport
private loginModeOverride: AnchorMode | undefined
/**
* The unique identifier for the wallet plugin.
*/
id = 'anchor'
/**
* The translations for this plugin
*/
translations = defaultTranslations
constructor(options?: WalletPluginAnchorOptions) {
super()
this.buoyUrl = options?.buoyUrl || 'https://cb.anchor.link'
this.buoyWs = options?.buoyWs
this.webAuthenticatorUrls = options?.webAuthenticatorUrls || {}
this.webFallbackDelayMs = options?.webFallbackDelayMs ?? DEFAULT_WEB_FALLBACK_DELAY_MS
const transportOptions: TransportOptions = {
id: this.id,
buoyUrl: this.buoyUrl,
buoyWs: this.buoyWs,
...options?.transport,
}
this.native = new NativeTransport(transportOptions)
this.web = new WebTransport(transportOptions)
this.setMode(options?.mode)
}
/**
* The logic configuration for the wallet plugin.
*/
readonly config: WalletPluginConfig = {
// Should the user interface display a chain selector?
requiresChainSelect: false,
// Should the user interface display a permission selector?
requiresPermissionSelect: false,
}
/**
* The metadata for the wallet plugin to be displayed in the user interface.
*/
readonly metadata: WalletPluginMetadata = WalletPluginMetadata.from({
name: 'Anchor',
description: '',
logo: Logo.from({
dark: 'data:image/svg+xml;base64,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',
light: 'data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMTYwIiBoZWlnaHQ9IjE2MCIgdmlld0JveD0iMCAwIDE2MCAxNjAiIGZpbGw9Im5vbmUiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+CjxjaXJjbGUgY3g9IjgwIiBjeT0iODAiIHI9IjgwIiBmaWxsPSIjMzY1MEEyIi8+CjxwYXRoIGZpbGwtcnVsZT0iZXZlbm9kZCIgY2xpcC1ydWxlPSJldmVub2RkIiBkPSJNODAuMDA2MyAzMEM4Mi4zMDUxIDMwIDg0LjQwMTkgMzEuMzEzNCA4NS40MDUgMzMuMzgxOEwxMDkuNDExIDgyLjg4MjJMMTA5Ljk1MyA4NEg5Ni42MTYzTDkyLjczNjYgNzZINjcuMjc1OUw2My4zOTYxIDg0SDUwLjA1OTRMNTAuNjAxNyA4Mi44ODE4TDc0LjYwNzcgMzMuMzgxOEM3NS42MTA4IDMxLjMxMzQgNzcuNzA3NSAzMCA4MC4wMDYzIDMwWk03Mi4xMjU2IDY2SDg3Ljg4N0w4MC4wMDYzIDQ5Ljc1MDFMNzIuMTI1NiA2NlpNOTcuOTk5NSAxMDFIMTEwLjAwNUMxMDkuNjQ0IDExNy4xNTIgOTYuMjczOCAxMzAgODAuMDA2MyAxMzBDNjMuNzM4OCAxMzAgNTAuMzY4NiAxMTcuMTUyIDUwLjAwNzggMTAxSDYyLjAxMzFDNjIuMjk0MSAxMDguMzU0IDY3LjE4MDQgMTE0LjYzMSA3NC4wMDAzIDExNi45OTZWOTNDNzQuMDAwMyA4OS42ODYzIDc2LjY4NjYgODcgODAuMDAwMyA4N0M4My4zMTQgODcgODYuMDAwMyA4OS42ODYzIDg2LjAwMDMgOTNWMTE3QzkyLjgyNjUgMTE0LjYzOCA5Ny43MTgzIDEwOC4zNTkgOTcuOTk5NSAxMDFaIiBmaWxsPSJ3aGl0ZSIvPgo8L3N2Zz4K',
}),
homepage: 'https://anchorwallet.io',
download: 'https://anchorwallet.io/download',
})
login(context: LoginContext): Promise<WalletPluginLoginResponse> {
return this.handleLogin(context)
}
/** Override login routing until cleared; pass `undefined` to restore the chooser. */
setMode(mode: AnchorMode | undefined) {
if (mode === undefined) {
this.loginModeOverride = undefined
delete this.data.mode
return
}
writeMode(this.data, mode)
this.loginModeOverride = mode
}
/** Return the mode stored or inferred for signing; this does not imply a login override. */
getMode(): AnchorMode | undefined {
return readMode(this.data)
}
/** Open the chain's web authenticator in a user gesture; unsupported chains return `null`. */
openWallet(chain?: ChainDefinition | Checksum256Type): Window | null {
return WalletPluginAnchor.openWallet(chain, this.webAuthenticatorUrls)
}
/** Open a chain's web authenticator with URL overrides; unsupported chains return `null`. */
static openWallet(
chain?: ChainDefinition | Checksum256Type,
webAuthenticatorUrls?: Record<string, string>
): Window | null {
const chainId = chain && typeof chain === 'object' && 'id' in chain ? chain.id : chain
const url = resolveWebAuthenticatorUrl(
chainId as Checksum256Type | undefined,
webAuthenticatorUrls
)
if (!url) {
return null
}
return openAuthenticatorWindow(url)
}
async handleLogin(context: LoginContext): Promise<WalletPluginLoginResponse> {
Iif (!context.ui) {
throw new Error('No UI available')
}
const perCall = readLoginOptions(this.id, context.arbitrary)
const preopened = perCall.popup
const t = context.ui.getTranslate(this.id)
const webUrl = resolveWebAuthenticatorUrl(context.chain?.id, this.webAuthenticatorUrls)
try {
const bundle = (await createIdentityRequest(
context,
this.buoyUrl
)) as IdentityRequestBundle
// Native-only chain: the question has no second answer, so never ask it.
if (!webUrl) {
preopened?.close()
return await this.native.login(this.data, context, bundle, t)
}
const forcedMode = perCall.mode ?? this.loginModeOverride
if (forcedMode) {
writeMode(this.data, forcedMode)
return await this.loginWithSwitch(
context,
bundle,
t,
webUrl,
forcedMode,
true,
preopened
)
}
const {mode, popup} = await this.chooseMode(context, bundle, t, webUrl, preopened)
writeMode(this.data, mode)
if (mode === 'web') {
return await this.web.login(this.data, context, bundle, webUrl, popup)
}
// Freshly chosen: no immediate switch link, but still recover from a silent deep link.
return await this.loginWithSwitch(context, bundle, t, webUrl, 'app', false)
} catch (error) {
preopened?.close()
Iif (!(error instanceof AnchorRequestCancelledError)) {
throw error
}
return this.recoverLogin(context, t, webUrl)
}
}
private async recoverLogin(
context: LoginContext,
t: Translator,
webUrl?: string
): Promise<WalletPluginLoginResponse> {
for (;;) {
const bundle = (await createIdentityRequest(
context,
this.buoyUrl
)) as IdentityRequestBundle
const {mode, popup} = await this.chooseRecoveryMode(context, bundle, t, webUrl)
writeMode(this.data, mode)
try {
return mode === 'web' && webUrl
? await this.web.login(this.data, context, bundle, webUrl, popup)
: await this.native.login(this.data, context, bundle, t)
} catch (error) {
Iif (!(error instanceof AnchorRequestCancelledError)) {
throw error
}
}
}
}
// The alternate transport needs its own identity request: two receivers on one channel race.
private async loginWithSwitch(
context: LoginContext,
bundle: IdentityRequestBundle,
t: Translator,
webUrl: string,
mode: AnchorMode,
immediate: boolean,
preopened?: Window
): Promise<WalletPluginLoginResponse> {
if (preopened) {
if (mode === 'web') {
// Navigate before the alternate-request await; the caller's popup is idling on a landing page.
preopened.location.href = this.web.loginUrl(context, bundle, webUrl)
} else {
preopened.close()
preopened = undefined
}
}
const alternateBundle = (await createIdentityRequest(
context,
this.buoyUrl
)) as IdentityRequestBundle
const alternateUrl = this.web.loginUrl(context, alternateBundle, webUrl)
let popup: Window | null = null
let switchTo: () => void = () => undefined
const switched = new Promise<'switched'>((resolve) => {
switchTo = () => {
if (mode === 'app') {
// Must happen inside the click, before any await.
popup = this.web.openWindow(alternateUrl)
}
resolve('switched')
}
})
const primary =
mode === 'app'
? this.native.login(this.data, context, bundle, t, {
immediate,
delayMs: this.webFallbackDelayMs,
onSelect: () => switchTo(),
})
: this.web.login(this.data, context, bundle, webUrl, preopened, {
onSelect: () => switchTo(),
})
// The loser of the race is abandoned; swallow its eventual rejection.
primary.catch(() => undefined)
const winner = await Promise.race([primary.then(() => 'primary' as const), switched])
if (winner === 'primary') {
return primary
}
const next: AnchorMode = mode === 'app' ? 'web' : 'app'
writeMode(this.data, next)
return next === 'web'
? this.web.login(this.data, context, alternateBundle, webUrl, popup)
: this.native.login(this.data, context, alternateBundle, t)
}
/** The browser popup opens inside the click handler, before this promise resolves. */
private chooseMode(
context: LoginContext,
bundle: IdentityRequestBundle,
t: Translator,
webUrl: string,
preopened?: Window
): Promise<{mode: AnchorMode; popup?: Window | null}> {
return new Promise((resolve, reject) => {
const url = this.web.loginUrl(context, bundle, webUrl)
const prompt = promptForMode(context, t, (mode) => {
if (mode === 'web') {
if (preopened) {
preopened.location.href = url
resolve({mode, popup: preopened})
} else {
resolve({mode, popup: this.web.openWindow(url)})
}
} else {
preopened?.close()
resolve({mode})
}
})
prompt.catch(reject)
})
}
private chooseRecoveryMode(
context: LoginContext,
bundle: IdentityRequestBundle,
t: Translator,
webUrl?: string
): Promise<{mode: AnchorMode; popup?: Window | null}> {
return new Promise((resolve, reject) => {
const prompt = promptForRecovery(context, t, Boolean(webUrl), (mode) => {
if (mode === 'web' && webUrl) {
const url = this.web.loginUrl(context, bundle, webUrl)
resolve({mode, popup: this.web.openWindow(url)})
} else {
resolve({mode})
}
})
prompt.catch(reject)
})
}
sign(
resolved: ResolvedSigningRequest,
context: TransactContext
): Promise<WalletPluginSignResponse> {
return this.handleSign(resolved, context)
}
private async handleSign(
resolved: ResolvedSigningRequest,
context: TransactContext
): Promise<WalletPluginSignResponse> {
// Never asks a question; v1.x sessions predate the concept and are always native.
const mode = readMode(this.data) || 'app'
if (mode === 'web') {
const webUrl = resolveWebAuthenticatorUrl(context.chain?.id, this.webAuthenticatorUrls)
if (!webUrl) {
throw new Error(
`This session signs in the browser, but there is no Anchor web authenticator for chain ${context.chain?.id}.`
)
}
return this.web.sign(this.data, resolved, context, webUrl)
}
return this.native.sign(this.data, resolved, context)
}
}
export {DEFAULT_WEB_AUTHENTICATOR_URLS} from './chains'
export type {AnchorLoginOptions, AnchorMode} from './mode'
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