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<!--
- @copyright 2020, Roeland Jago Douma <roeland@famdouma.nl>
-
- @author Roeland Jago Douma <roeland@famdouma.nl>
-
- @license GNU AGPL version 3 or any later version
-
- This program is free software: you can redistribute it and/or modify
- it under the terms of the GNU Affero General Public License as
- published by the Free Software Foundation, either version 3 of the
- License, or (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU Affero General Public License for more details.
-
- You should have received a copy of the GNU Affero General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-->
<template>
<div v-if="!isHttps">
{{ t('settings', 'Passwordless authentication requires a secure connection.') }}
</div>
<div v-else>
<div v-if="step === RegistrationSteps.READY">
<button @click="start">
{{ t('settings', 'Add Webauthn device') }}
</button>
</div>
<div v-else-if="step === RegistrationSteps.REGISTRATION"
class="new-webauthn-device">
<span class="icon-loading-small webauthn-loading" />
{{ t('settings', 'Please authorize your WebAuthn device.') }}
</div>
<div v-else-if="step === RegistrationSteps.NAMING"
class="new-webauthn-device">
<span class="icon-loading-small webauthn-loading" />
<input v-model="name"
type="text"
:placeholder="t('settings', 'Name your device')"
@:keyup.enter="submit">
<button @click="submit">
{{ t('settings', 'Add') }}
</button>
</div>
<div v-else-if="step === RegistrationSteps.PERSIST"
class="new-webauthn-device">
<span class="icon-loading-small webauthn-loading" />
{{ t('settings', 'Adding your device …') }}
</div>
<div v-else>
Invalid registration step. This should not have happened.
</div>
</div>
</template>
<script>
import confirmPassword from '@nextcloud/password-confirmation'
import logger from '../../logger'
import {
startRegistration,
finishRegistration,
} from '../../service/WebAuthnRegistrationSerice'
const logAndPass = (text) => (data) => {
logger.debug(text)
return data
}
const RegistrationSteps = Object.freeze({
READY: 1,
REGISTRATION: 2,
NAMING: 3,
PERSIST: 4,
})
export default {
name: 'AddDevice',
props: {
httpWarning: Boolean,
isHttps: {
type: Boolean,
default: false
}
},
data() {
return {
name: '',
credential: {},
RegistrationSteps,
step: RegistrationSteps.READY,
}
},
methods: {
arrayToBase64String(a) {
return btoa(String.fromCharCode(...a))
},
start() {
this.step = RegistrationSteps.REGISTRATION
console.debug('Starting WebAuthn registration')
return confirmPassword()
.then(this.getRegistrationData)
.then(this.register.bind(this))
.then(() => { this.step = RegistrationSteps.NAMING })
.catch(err => {
console.error(err.name, err.message)
this.step = RegistrationSteps.READY
})
},
getRegistrationData() {
console.debug('Fetching webauthn registration data')
const base64urlDecode = function(input) {
// Replace non-url compatible chars with base64 standard chars
input = input
.replace(/-/g, '+')
.replace(/_/g, '/')
// Pad out with standard base64 required padding characters
const pad = input.length % 4
if (pad) {
if (pad === 1) {
throw new Error('InvalidLengthError: Input base64url string is the wrong length to determine padding')
}
input += new Array(5 - pad).join('=')
}
return window.atob(input)
}
return startRegistration()
.then(publicKey => {
console.debug(publicKey)
publicKey.challenge = Uint8Array.from(base64urlDecode(publicKey.challenge), c => c.charCodeAt(0))
publicKey.user.id = Uint8Array.from(publicKey.user.id, c => c.charCodeAt(0))
return publicKey
})
.catch(err => {
console.error('Error getting webauthn registration data from server', err)
throw new Error(t('settings', 'Server error while trying to add webauthn device'))
})
},
register(publicKey) {
console.debug('starting webauthn registration')
return navigator.credentials.create({ publicKey })
.then(data => {
this.credential = {
id: data.id,
type: data.type,
rawId: this.arrayToBase64String(new Uint8Array(data.rawId)),
response: {
clientDataJSON: this.arrayToBase64String(new Uint8Array(data.response.clientDataJSON)),
attestationObject: this.arrayToBase64String(new Uint8Array(data.response.attestationObject)),
},
}
})
},
submit() {
this.step = RegistrationSteps.PERSIST
return confirmPassword()
.then(logAndPass('confirmed password'))
.then(this.saveRegistrationData)
.then(logAndPass('registration data saved'))
.then(() => this.reset())
.then(logAndPass('app reset'))
.catch(console.error.bind(this))
},
async saveRegistrationData() {
try {
const device = await finishRegistration(this.name, JSON.stringify(this.credential))
logger.info('new device added', { device })
this.$emit('added', device)
} catch (err) {
logger.error('Error persisting webauthn registration', { error: err })
throw new Error(t('settings', 'Server error while trying to complete webauthn device registration'))
}
},
reset() {
this.name = ''
this.registrationData = {}
this.step = RegistrationSteps.READY
},
},
}
</script>
<style scoped>
.webauthn-loading {
display: inline-block;
vertical-align: sub;
margin-left: 2px;
margin-right: 2px;
}
.new-webauthn-device {
line-height: 300%;
}
</style>
|
