54 lines
1.7 KiB
Crystal
54 lines
1.7 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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# 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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# 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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# 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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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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# Creates raw JWT token
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#
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# WARNING: Always use a wrapper for this method
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private def create_jwt(data, expiration : Int) : String
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JWT.encode({"data" => data.to_h, "exp" => expiration}, Backend.config.api.jwt_secret, JWT::Algorithm::HS256)
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end
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# Decodes JWT token
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def decode_jwt(jwt : String) : JSON::Any
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JWT.decode(jwt, Backend.config.api.jwt_secret, JWT::Algorithm::HS256)[0]
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end
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# :ditto:
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def decode_jwt?(jwt : String) : JSON::Any?
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decode_jwt(jwt)
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rescue
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nil
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end
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# Creates JWT token for user
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def create_user_jwt(user_id : Int, expiration : Int) : String
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create_jwt({user_id: user_id}, expiration)
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end
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end
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end
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end
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