Dominic Grimm
860ae7ed5e
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87 lines
2.3 KiB
Crystal
87 lines
2.3 KiB
Crystal
# Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
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# Copyright (C) 2022 Dominic Grimm
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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require "jwt"
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require "json"
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require "uuid"
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module Backend
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module Api
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# Authorization and authentication utilities
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module Auth
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extend self
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# Bearer token header
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BEARER = "Bearer "
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# JWT token
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struct Token
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include JSON::Serializable
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getter iss : String
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getter vrs : String
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getter iat : Int64
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getter exp : Int64
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getter jti : UUID
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getter context : Context
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def initialize(
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@iss : String,
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@vrs : String,
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@iat : Int64,
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@exp : Int64,
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@jti : UUID,
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@context : Context
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)
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end
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def encode : String
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JWT.encode(self, Backend.config.api.jwt_secret, JWT::Algorithm::HS256)
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end
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def self.from_hash(token : Hash(String, JSON::Any)) : self
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self.new(
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iss: token["iss"].as_s,
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vrs: token["vrs"].as_s,
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iat: token["iat"].as_i64,
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exp: token["exp"].as_i64,
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jti: UUID.new(token["jti"].as_s),
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context: Context.from_hash(token["context"].as_h)
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)
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end
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def self.decode(jwt : String) : self
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self.from_hash(JWT.decode(jwt, Backend.config.api.jwt_secret, JWT::Algorithm::HS256)[0].as_h)
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end
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end
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# JWT token context data
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struct Context
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include JSON::Serializable
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getter user : Int32
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def initialize(@user : Int32)
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end
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def self.from_hash(data : Hash(String, JSON::Any))
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self.new(user: data["user"].as_i)
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end
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end
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end
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end
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end
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