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
|
const fs = require('fs')
const path = require('path')
const jwt = require('jsonwebtoken')
const api = require('./api')
const pemPath = path.join(__dirname, '..', '..', '..', 'private-key.pem')
const privateKey = process.env.GITHUB_APP_PRIVATE_KEY || fs.readFileSync(pemPath)
function createAppToken () {
return jwt.sign({ iss: process.env.GITHUB_APP_ID }, privateKey, {
algorithm: 'RS256',
expiresIn: '10m'
})
}
function createInstallationToken (installationId) {
const token = createAppToken()
const url = `/app/installations/${installationId}/access_tokens`
return api.request({ url, method: 'POST', token })
}
function createOauthFlowUrl () {
const redirectUrl = new URL('https://github.com/login/oauth/authorize')
redirectUrl.search = new URLSearchParams({
client_id: process.env.GITHUB_CLIENT_ID,
redirect_uri: process.env.GITHUB_OAUTH_CALLBACK_URL,
state: 'foo'
}).toString()
return redirectUrl.toString()
}
function createOauthReturnUrl (token) {
const url = new URL(process.env.APP_BASE_URL)
url.search = new URLSearchParams({ token }).toString()
return url.toString()
}
function getOauthToken (code) {
return api.request({
method: 'POST',
url: 'https://github.com/login/oauth/access_token',
headers: {
Accept: 'application/json'
},
data: {
client_id: process.env.GITHUB_CLIENT_ID,
client_secret: process.env.GITHUB_CLIENT_SECRET,
code
}
})
}
function getOauthUser (token) {
return api.request({ url: '/user', headers: { Accept: 'application/json' }, token })
}
function getUserToken (oauth, user) {
return jwt.sign({
oauth_access_token: oauth.access_token,
sub: user.login
}, privateKey, {
algorithm: 'RS256'
})
}
function verifyUserToken (token) {
return jwt.verify(token, privateKey, {
algorithms: ['RS256']
})
}
module.exports = {
createAppToken,
createInstallationToken,
createOauthFlowUrl,
createOauthReturnUrl,
getOauthToken,
getOauthUser,
getUserToken,
verifyUserToken
}
|
