class JWT::Decode
Decoding logic for JWT
Attributes
header[R]
payload[R]
signature[R]
Public Class Methods
base64url_decode(str)
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# File lib/jwt/decode.rb, line 43 def self.base64url_decode(str) str += '=' * (4 - str.length.modulo(4)) Base64.decode64(str.tr('-_', '+/')) end
new(jwt, key, verify, options, &keyfinder)
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# File lib/jwt/decode.rb, line 12 def initialize(jwt, key, verify, options, &keyfinder) @jwt = jwt @key = key @verify = verify @options = options @keyfinder = keyfinder end
Public Instance Methods
decode_segments()
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# File lib/jwt/decode.rb, line 20 def decode_segments header_segment, payload_segment, crypto_segment = raw_segments(@jwt, @verify) @header, @payload = decode_header_and_payload(header_segment, payload_segment) @signature = Decode.base64url_decode(crypto_segment.to_s) if @verify signing_input = [header_segment, payload_segment].join('.') [@header, @payload, @signature, signing_input] end
verify()
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# File lib/jwt/decode.rb, line 48 def verify @options.each do |key, val| next unless key.to_s =~ /verify/ Verify.send(key, payload, @options) if val end end
Private Instance Methods
decode_header_and_payload(header_segment, payload_segment)
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# File lib/jwt/decode.rb, line 36 def decode_header_and_payload(header_segment, payload_segment) header = JWT.decode_json(Decode.base64url_decode(header_segment)) payload = JWT.decode_json(Decode.base64url_decode(payload_segment)) [header, payload] end
raw_segments(jwt, verify)
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# File lib/jwt/decode.rb, line 28 def raw_segments(jwt, verify) segments = jwt.split('.') required_num_segments = verify ? [3] : [2, 3] raise(JWT::DecodeError, 'Not enough or too many segments') unless required_num_segments.include? segments.length segments end