mirror of
https://git.sr.ht/~phw/scotty
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71 lines
1.9 KiB
Go
71 lines
1.9 KiB
Go
/*
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Copyright © 2023 Philipp Wolfer <phw@uploadedlobster.com>
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Scotty is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later version.
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Scotty is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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Scotty. If not, see <https://www.gnu.org/licenses/>.
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*/
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package auth
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import (
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"context"
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"golang.org/x/oauth2"
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)
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type OAuth2Strategy interface {
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Config() oauth2.Config
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AuthCodeURL(verifier string, state string) AuthUrl
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ExchangeToken(code CodeResponse, verifier string) (*oauth2.Token, error)
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}
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type AuthUrl struct {
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// The URL the user must visit to approve access
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Url string
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// Random state string passed on to the callback.
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// Leave empty if the service does not support state.
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State string
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// Parameter name of the code passed on to the callback (usually "code")
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Param string
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}
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type CodeResponse struct {
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Code string
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State string
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}
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func NewStandardStrategy(conf oauth2.Config) OAuth2Strategy {
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return StandardStrategy{conf: conf}
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}
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type StandardStrategy struct {
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conf oauth2.Config
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}
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func (s StandardStrategy) Config() oauth2.Config {
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return s.conf
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}
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func (s StandardStrategy) AuthCodeURL(verifier string, state string) AuthUrl {
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url := s.conf.AuthCodeURL(state, oauth2.AccessTypeOffline, oauth2.S256ChallengeOption(verifier))
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return AuthUrl{
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Url: url,
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State: state,
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Param: "code",
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}
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}
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func (s StandardStrategy) ExchangeToken(code CodeResponse, verifier string) (*oauth2.Token, error) {
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ctx := context.Background()
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return s.conf.Exchange(ctx, code.Code, oauth2.VerifierOption(verifier))
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}
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