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memoize
me, my userKeys and my browserKeys
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| import { base64 } from 'rfc4648'; | ||
| import backend, { DeviceDto, UserDto } from './backend'; | ||
| import { BrowserKeys, UserKeys } from './crypto'; | ||
|
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| class UserData { | ||
|
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| #me?: Promise<UserDto>; | ||
| #browserKeys?: Promise<BrowserKeys | undefined>; | ||
|
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| public get me(): Promise<UserDto> { | ||
| if (!this.#me) { | ||
| this.#me = backend.users.me(true); | ||
| } | ||
| return this.#me; | ||
| } | ||
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| public get browserKeys(): Promise<BrowserKeys | undefined> { | ||
| return this.me.then(me => { | ||
| if (!this.#browserKeys) { | ||
| this.#browserKeys = BrowserKeys.load(me.id); | ||
| } | ||
| return this.#browserKeys; | ||
| }); | ||
| } | ||
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| public get browser(): Promise<DeviceDto | undefined> { | ||
| return this.me.then(async me => { | ||
| const browserKeys = await this.browserKeys; | ||
| if (browserKeys == null) { | ||
| return undefined; | ||
| } else { | ||
| const browserId = await browserKeys.id(); | ||
| return me.devices.find(d => d.id == browserId); | ||
| } | ||
| }); | ||
| } | ||
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| public async reload() { | ||
| this.#me = backend.users.me(true); | ||
| this.#browserKeys = undefined; | ||
| } | ||
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| public async createBrowserKeys(): Promise<BrowserKeys> { | ||
| const me = await this.me; | ||
| const browserKeys = await BrowserKeys.create(); | ||
| await browserKeys.store(me.id); | ||
| this.#browserKeys = Promise.resolve(browserKeys); | ||
| return browserKeys; | ||
| } | ||
|
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| public async decryptUserKeysWithSetupCode(setupCode: string): Promise<UserKeys> { | ||
| const me = await this.me; | ||
| if (!me.privateKey || !me.ecdhPublicKey) { | ||
| throw new Error('User not initialized.'); | ||
| } | ||
| const ecdhPublicKey = base64.parse(me.ecdhPublicKey); | ||
| const ecdsaPublicKey = me.ecdsaPublicKey ? base64.parse(me.ecdsaPublicKey) : undefined; // TODO keep ecdsa key optional? | ||
| return await UserKeys.recover(me.privateKey, setupCode, ecdhPublicKey, ecdsaPublicKey); | ||
| } | ||
|
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| public async decryptUserKeysWithBrowser(): Promise<UserKeys> { | ||
| const me = await this.me; | ||
| if (!me.privateKey || !me.ecdhPublicKey || !me.ecdsaPublicKey) { | ||
| throw new Error('User not initialized.'); | ||
| } | ||
| const browserKeys = await this.browserKeys; | ||
| if (!browserKeys) { | ||
| throw new Error('Browser keys not found.'); | ||
| } | ||
| const browser = await this.browser; | ||
| if (!browser) { | ||
| throw new Error('Device not initialized.'); | ||
| } | ||
| return await UserKeys.decryptOnBrowser(browser.userPrivateKey, browserKeys.keyPair.privateKey, base64.parse(me.ecdhPublicKey), base64.parse(me.ecdsaPublicKey)); | ||
| } | ||
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| } | ||
|
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| const instance = new UserData(); | ||
| export default instance; |
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