Class: Userlist::Token

Inherits:
Object
  • Object
show all
Defined in:
lib/userlist/token.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(payload:, header:, key:, algorithm: 'HS256') ⇒ Token

Returns a new instance of Token.



28
29
30
31
32
33
 
# File 'lib/userlist/token.rb', line 28

def initialize(payload:, header:, key:, algorithm: 'HS256')
  @payload = payload
  @header = header
  @algorithm = algorithm
  @key = key
end

Class Method Details

.generate(user, configuration = {}) ⇒ Object

Raises:



3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
 
# File 'lib/userlist/token.rb', line 3

def self.generate(user, configuration = {})
  config = Userlist.config.merge(configuration)

  raise Userlist::ConfigurationError, :push_key unless config.push_key
  raise Userlist::ConfigurationError, :push_id unless config.push_id
  raise Userlist::ArgumentError, 'Missing required user or identifier' unless user

  user = Userlist::Push::User.from_payload(user, config)

  now = Time.now.utc.to_i

  header = {
    kid: config.push_id,
    alg: 'HS256'
  }

  payload = {
    sub: user.identifier,
    exp: now + config.token_lifetime,
    iat: now
  }

  new(payload: payload, header: header, key: config.push_key).to_s
end

Instance Method Details

#encoded_header ⇒ Object 



35
36
37
 
# File 'lib/userlist/token.rb', line 35

def encoded_header
  encode(header)
end

#encoded_header_and_payload ⇒ Object 



43
44
45
 
# File 'lib/userlist/token.rb', line 43

def encoded_header_and_payload
  "#{encoded_header}.#{encoded_payload}"
end

#encoded_payload ⇒ Object 



39
40
41
 
# File 'lib/userlist/token.rb', line 39

def encoded_payload
  encode(payload)
end

#signature ⇒ Object 



47
48
49
50
51
52
 
# File 'lib/userlist/token.rb', line 47

def signature
  digest = OpenSSL::Digest.new(algorithm.sub('HS', 'SHA'))
  signature = OpenSSL::HMAC.digest(digest, key, encoded_header_and_payload)

  encode(signature)
end

#to_s ⇒ Object 



54
55
56
 
# File 'lib/userlist/token.rb', line 54

def to_s
  "#{encoded_header_and_payload}.#{signature}"
end