Merge branch 'hailey/expo-oauth-helper' into hailey/oauth

This commit is contained in:
Hailey
2024-04-15 02:18:36 -07:00
5 changed files with 360 additions and 0 deletions
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import {Fetch} from '@atproto/fetch'
import {UniversalIdentityResolver} from '@atproto/identity-resolver'
import {
OAuthAuthorizeOptions,
OAuthClientFactory,
OAuthResponseMode,
OAuthResponseType,
Session,
} from '@atproto/oauth-client'
import {OAuthClientMetadata} from '@atproto/oauth-client-metadata'
import {IsomorphicOAuthServerMetadataResolver} from '@atproto/oauth-server-metadata-resolver'
import {ReactNativeCryptoImplementation} from './react-native-crypto-implementation'
import {DatabaseStore} from './react-native-oauth-database'
import {RNOAuthDatabase} from './react-native-oauth-database.native'
export type RNOAuthClientOptions = {
responseMode?: OAuthResponseMode
responseType?: OAuthResponseType
clientMetadata: OAuthClientMetadata
fetch?: Fetch
crypto?: any
}
export class RNOAuthClientFactory extends OAuthClientFactory {
readonly sessionStore: DatabaseStore<Session>
constructor({
clientMetadata,
// "fragment" is safer as it is not sent to the server
responseMode = 'fragment',
fetch = globalThis.fetch,
}: RNOAuthClientOptions) {
const database = new RNOAuthDatabase()
super({
clientMetadata,
responseMode,
fetch,
cryptoImplementation: new ReactNativeCryptoImplementation(),
sessionStore: database.getSessionStore(),
stateStore: database.getStateStore(),
metadataResolver: new IsomorphicOAuthServerMetadataResolver({
fetch,
cache: database.getMetadataCache(),
}),
identityResolver: UniversalIdentityResolver.from({
fetch,
didCache: database.getDidCache(),
handleCache: database.getHandleCache(),
}),
dpopNonceCache: database.getDpopNonceCache(),
})
this.sessionStore = database.getSessionStore()
}
async restoreAll() {
const sessionIds = await this.sessionStore.getKeys()
return Object.fromEntries(
await Promise.all(
sessionIds.map(
async sessionId =>
[sessionId, await this.restore(sessionId, false)] as const,
),
),
)
}
// async init(sessionId?: string, forceRefresh = false) {
// // // const signInResult = await this.signInCallback()
// // if (signInResult) {
// // return signInResult
// // } else if (sessionId) {
// // const client = await this.restore(sessionId, forceRefresh)
// // return {client}
// // } else {
// // // TODO: we could restore any session from the store ?
// // }
// }
async signIn(input: string, options?: OAuthAuthorizeOptions) {
return await this.authorize(input, options)
}
// async signInCallback() {
// const redirectUri = new URL(this.clientMetadata.redirect_uris[0])
// if (location.pathname !== redirectUri.pathname) return null
//
// const params =
// this.responseMode === 'query'
// ? new URLSearchParams(location.search)
// : new URLSearchParams(location.hash.slice(1))
//
// // Only if the query string contains oauth callback params
// if (
// !params.has('iss') ||
// !params.has('state') ||
// !(params.has('code') || params.has('error'))
// ) {
// return null
// }
//
// // Replace the current history entry without the query string (this will
// // prevent this 'if' branch to run again if the user refreshes the page)
// history.replaceState(null, '', location.pathname)
//
// return this.callback(params)
// .then(async result => {
// if (result.state?.startsWith(POPUP_KEY_PREFIX)) {
// const stateKey = result.state.slice(POPUP_KEY_PREFIX.length)
//
// await this.popupStore.set(stateKey, {
// status: 'fulfilled',
// value: result.client.sessionId,
// })
//
// window.close() // continued in signInPopup
// throw new Error('Login complete, please close the popup window.')
// }
//
// return result
// })
// .catch(async err => {
// // TODO: Throw a proper error from parent class to actually detect
// // oauth authorization errors
// const state = typeof (err as any)?.state
// if (typeof state === 'string' && state?.startsWith(POPUP_KEY_PREFIX)) {
// const stateKey = state.slice(POPUP_KEY_PREFIX.length)
//
// await this.popupStore.set(stateKey, {
// status: 'rejected',
// reason: err,
// })
//
// window.close() // continued in signInPopup
// throw new Error('Login complete, please close the popup window.')
// }
//
// throw err
// })
// }
}
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export * from '@atproto/oauth-client-browser/src/browser-oauth-client-factory'
@@ -0,0 +1,214 @@
import {GenericStore, Value} from '@atproto/caching'
import {DidDocument} from '@atproto/did'
import {ResolvedHandle} from '@atproto/handle-resolver'
import {Key} from '@atproto/jwk'
import {WebcryptoKey} from '@atproto/jwk-webcrypto'
import {InternalStateData, Session, TokenSet} from '@atproto/oauth-client'
import {OAuthServerMetadata} from '@atproto/oauth-server-metadata'
import Storage from '@react-native-async-storage/async-storage'
type Item = {
value: string
expiresAt: null | Date
}
type EncodedKey = {
keyId: string
keyPair: CryptoKeyPair
}
function encodeKey(key: Key): EncodedKey {
if (!(key instanceof WebcryptoKey) || !key.kid) {
throw new Error('Invalid key object')
}
return {
keyId: key.kid,
keyPair: key.cryptoKeyPair,
}
}
async function decodeKey(encoded: EncodedKey): Promise<Key> {
return WebcryptoKey.fromKeypair(encoded.keyId, encoded.keyPair)
}
export type Schema = {
state: Item<{
dpopKey: EncodedKey
iss: string
nonce: string
verifier?: string
appState?: string
}>
session: Item<{
dpopKey: EncodedKey
tokenSet: TokenSet
}>
didCache: Item<DidDocument>
dpopNonceCache: Item<string>
handleCache: Item<ResolvedHandle>
metadataCache: Item<OAuthServerMetadata>
}
export type DatabaseStore<V extends Value> = GenericStore<string, V> & {
getKeys: () => Promise<string[]>
}
const STORES = [
'state',
'session',
'didCache',
'dpopNonceCache',
'handleCache',
'metadataCache',
] as const
export class RNOAuthDatabase {
async delete(key: string) {
await Storage.removeItem(key)
}
protected createStore<N extends keyof Schema, V extends Value>(
dbName: N,
{
encode,
decode,
maxAge,
}: {
encode: (value: V) => Schema[N]['value'] | PromiseLike<Schema[N]['value']>
decode: (encoded: Schema[N]['value']) => V | PromiseLike<V>
maxAge?: number
},
): DatabaseStore<V> {
return {
get: async key => {
const itemJson = await Storage.getItem(`${dbName}.${key}`)
if (itemJson == null) return undefined
const item = JSON.parse(itemJson) as Schema[N]
// Too old, proactively delete
if (item.expiresAt != null && item.expiresAt < new Date()) {
await this.delete(`${dbName}.${key}`)
return undefined
}
// Item found and valid. Decode
return decode(item.value)
},
getKeys: async () => {
const keys = await Storage.getAllKeys()
return keys.filter(key => key.startsWith(`${dbName}.`)) as string[]
},
set: async (key, value) => {
const item = {
value: await encode(value),
expiresAt: maxAge == null ? null : new Date(Date.now() + maxAge),
} as Schema[N]
await Storage.setItem(`${dbName}.${key}`, JSON.stringify(item))
},
del: async key => {
await this.delete(`${dbName}.${key}`)
},
}
}
getSessionStore(): DatabaseStore<Session> {
return this.createStore('session', {
encode: ({dpopKey, ...session}) => ({
...session,
dpopKey: encodeKey(dpopKey),
}),
decode: async ({dpopKey, ...encoded}) => ({
...encoded,
dpopKey: await decodeKey(dpopKey),
}),
})
}
getStateStore(): DatabaseStore<InternalStateData> {
return this.createStore('state', {
encode: ({dpopKey, ...session}) => ({
...session,
dpopKey: encodeKey(dpopKey),
}),
decode: async ({dpopKey, ...encoded}) => ({
...encoded,
dpopKey: await decodeKey(dpopKey),
}),
})
}
getDpopNonceCache(): undefined | DatabaseStore<string> {
return this.createStore('dpopNonceCache', {
// No time limit. It is better to try with a potentially outdated nonce
// and potentially succeed rather than make requests without a nonce and
// 100% fail.
encode: value => value,
decode: encoded => encoded,
})
}
getDidCache(): undefined | DatabaseStore<DidDocument> {
return this.createStore('didCache', {
maxAge: 60e3,
encode: value => value,
decode: encoded => encoded,
})
}
getHandleCache(): undefined | DatabaseStore<ResolvedHandle> {
return this.createStore('handleCache', {
maxAge: 60e3,
encode: value => value,
decode: encoded => encoded,
})
}
getMetadataCache(): undefined | DatabaseStore<OAuthServerMetadata> {
return this.createStore('metadataCache', {
maxAge: 60e3,
encode: value => value,
decode: encoded => encoded,
})
}
async cleanup() {
await Promise.all(
STORES.map(
async storeName =>
[
storeName,
await tx
.objectStore(storeName)
.index('expiresAt')
.getAllKeys(query),
] as const,
),
)
const storesWithInvalidKeys = res.filter(r => r[1].length > 0)
await db.transaction(
storesWithInvalidKeys.map(r => r[0]),
'readwrite',
tx =>
Promise.all(
storesWithInvalidKeys.map(async ([name, keys]) =>
tx.objectStore(name).delete(keys),
),
),
)
}
async [Symbol.asyncDispose]() {
await this.cleanup()
}
}
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export * from '@atproto/oauth-client-browser/src/browser-oauth-database'
@@ -0,0 +1 @@
export * from '@atproto/oauth-client-browser/src/indexed-db-store'