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
|
<template>
<form v-if="isHttps && hasPublicKeyCredential"
ref="loginForm"
method="post"
name="login"
@submit.prevent="submit">
<fieldset>
<p class="grouptop groupbottom">
<input id="user"
ref="user"
v-model="user"
type="text"
name="user"
:autocomplete="autoCompleteAllowed ? 'on' : 'off'"
:placeholder="t('core', 'Username or email')"
:aria-label="t('core', 'Username or email')"
required
@change="$emit('update:username', user)">
<label for="user" class="infield">{{ t('core', 'Username or email') }}</label>
</p>
<div v-if="!validCredentials">
{{ t('core', 'Your account is not setup for passwordless login.') }}
</div>
<LoginButton v-if="validCredentials"
:loading="loading"
:inverted-colors="invertedColors"
@click="authenticate" />
</fieldset>
</form>
<div v-else-if="!hasPublicKeyCredential">
{{ t('core', 'Passwordless authentication is not supported in your browser.') }}
</div>
<div v-else-if="!isHttps">
{{ t('core', 'Passwordless authentication is only available over a secure connection.') }}
</div>
</template>
<script>
import {
startAuthentication,
finishAuthentication,
} from '../../services/WebAuthnAuthenticationService'
import LoginButton from './LoginButton'
class NoValidCredentials extends Error {
}
export default {
name: 'PasswordLessLoginForm',
components: {
LoginButton,
},
props: {
username: {
type: String,
default: '',
},
redirectUrl: {
type: String,
},
invertedColors: {
type: Boolean,
default: false,
},
autoCompleteAllowed: {
type: Boolean,
default: true,
},
isHttps: {
type: Boolean,
default: false,
},
hasPublicKeyCredential: {
type: Boolean,
default: false,
},
},
data() {
return {
user: this.username,
loading: false,
validCredentials: true,
}
},
methods: {
authenticate() {
console.debug('passwordless login initiated')
this.getAuthenticationData(this.user)
.then(publicKey => {
console.debug(publicKey)
return publicKey
})
.then(this.sign)
.then(this.completeAuthentication)
.catch(error => {
if (error instanceof NoValidCredentials) {
this.validCredentials = false
return
}
console.debug(error)
})
},
getAuthenticationData(uid) {
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 startAuthentication(uid)
.then(publicKey => {
console.debug('Obtained PublicKeyCredentialRequestOptions')
console.debug(publicKey)
if (!Object.prototype.hasOwnProperty.call(publicKey, 'allowCredentials')) {
console.debug('No credentials found.')
throw new NoValidCredentials()
}
publicKey.challenge = Uint8Array.from(base64urlDecode(publicKey.challenge), c => c.charCodeAt(0))
publicKey.allowCredentials = publicKey.allowCredentials.map(function(data) {
return {
...data,
id: Uint8Array.from(base64urlDecode(data.id), c => c.charCodeAt(0)),
}
})
console.debug('Converted PublicKeyCredentialRequestOptions')
console.debug(publicKey)
return publicKey
})
.catch(error => {
console.debug('Error while obtaining data')
throw error
})
},
sign(publicKey) {
const arrayToBase64String = function(a) {
return window.btoa(String.fromCharCode(...a))
}
const arrayToString = function(a) {
return String.fromCharCode(...a)
}
return navigator.credentials.get({ publicKey })
.then(data => {
console.debug(data)
console.debug(new Uint8Array(data.rawId))
console.debug(arrayToBase64String(new Uint8Array(data.rawId)))
return {
id: data.id,
type: data.type,
rawId: arrayToBase64String(new Uint8Array(data.rawId)),
response: {
authenticatorData: arrayToBase64String(new Uint8Array(data.response.authenticatorData)),
clientDataJSON: arrayToBase64String(new Uint8Array(data.response.clientDataJSON)),
signature: arrayToBase64String(new Uint8Array(data.response.signature)),
userHandle: data.response.userHandle ? arrayToString(new Uint8Array(data.response.userHandle)) : null,
},
}
})
.then(challenge => {
console.debug(challenge)
return challenge
})
.catch(error => {
console.debug('GOT AN ERROR!')
console.debug(error) // Example: timeout, interaction refused...
})
},
completeAuthentication(challenge) {
console.debug('TIME TO COMPLETE')
const location = this.redirectUrl
return finishAuthentication(JSON.stringify(challenge))
.then(data => {
console.debug('Logged in redirecting')
window.location.href = location
})
.catch(error => {
console.debug('GOT AN ERROR WHILE SUBMITTING CHALLENGE!')
console.debug(error) // Example: timeout, interaction refused...
})
},
submit() {
// noop
},
},
}
</script>
<style scoped>
</style>
|
