83 lines
2.2 KiB
Crystal
83 lines
2.2 KiB
Crystal
# Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
|
|
# Copyright (C) 2022 Dominic Grimm
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU 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 General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
|
|
require "jwt"
|
|
require "json"
|
|
|
|
module Backend
|
|
module Api
|
|
# Authorization and authentication utilities
|
|
module Auth
|
|
extend self
|
|
|
|
# Bearer token header
|
|
BEARER = "Bearer "
|
|
|
|
# JWT token
|
|
struct Token
|
|
include JSON::Serializable
|
|
|
|
getter iss : String
|
|
getter iat : Int64
|
|
getter exp : Int64
|
|
getter jti : String
|
|
getter context : Context
|
|
|
|
def initialize(
|
|
@iss : String,
|
|
@iat : Int64,
|
|
@exp : Int64,
|
|
@jti : String,
|
|
@context : Context
|
|
)
|
|
end
|
|
|
|
def encode : String
|
|
JWT.encode(self, Backend.config.api.jwt_secret, JWT::Algorithm::HS256)
|
|
end
|
|
|
|
def self.from_hash(token : Hash(String, JSON::Any)) : self
|
|
self.new(
|
|
iss: token["iss"].as_s,
|
|
iat: token["iat"].as_i64,
|
|
exp: token["exp"].as_i64,
|
|
jti: token["jti"].as_s,
|
|
context: Context.from_hash(token["context"].as_h)
|
|
)
|
|
end
|
|
|
|
def self.decode(jwt : String) : self
|
|
self.from_hash(JWT.decode(jwt, Backend.config.api.jwt_secret, JWT::Algorithm::HS256)[0].as_h)
|
|
end
|
|
end
|
|
|
|
# JWT token context data
|
|
struct Context
|
|
include JSON::Serializable
|
|
|
|
getter user : Int32
|
|
|
|
def initialize(@user : Int32)
|
|
end
|
|
|
|
def self.from_hash(data : Hash(String, JSON::Any))
|
|
self.new(user: data["user"].as_i)
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|