GoToSocial/internal/api/auth/token.go

121 lines
3.9 KiB
Go

// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package auth
import (
"net/http"
"net/url"
apiutil "github.com/superseriousbusiness/gotosocial/internal/api/util"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/oauth"
"github.com/gin-gonic/gin"
)
type tokenRequestForm struct {
GrantType *string `form:"grant_type" json:"grant_type" xml:"grant_type"`
Code *string `form:"code" json:"code" xml:"code"`
RedirectURI *string `form:"redirect_uri" json:"redirect_uri" xml:"redirect_uri"`
ClientID *string `form:"client_id" json:"client_id" xml:"client_id"`
ClientSecret *string `form:"client_secret" json:"client_secret" xml:"client_secret"`
Scope *string `form:"scope" json:"scope" xml:"scope"`
}
// TokenPOSTHandler should be served as a POST at https://example.org/oauth/token
// The idea here is to serve an oauth access token to a user, which can be used for authorizing against non-public APIs.
func (m *Module) TokenPOSTHandler(c *gin.Context) {
if _, err := apiutil.NegotiateAccept(c, apiutil.JSONAcceptHeaders...); err != nil {
apiutil.ErrorHandler(c, gtserror.NewErrorNotAcceptable(err, err.Error()), m.processor.InstanceGetV1)
return
}
help := []string{}
form := &tokenRequestForm{}
if err := c.ShouldBind(form); err != nil {
apiutil.OAuthErrorHandler(c, gtserror.NewErrorBadRequest(oauth.ErrInvalidRequest, err.Error()))
return
}
c.Request.Form = url.Values{}
var grantType string
if form.GrantType != nil {
grantType = *form.GrantType
c.Request.Form.Set("grant_type", grantType)
} else {
help = append(help, "grant_type was not set in the token request form, but must be set to authorization_code or client_credentials")
}
if form.ClientID != nil {
c.Request.Form.Set("client_id", *form.ClientID)
} else {
help = append(help, "client_id was not set in the token request form")
}
if form.ClientSecret != nil {
c.Request.Form.Set("client_secret", *form.ClientSecret)
} else {
help = append(help, "client_secret was not set in the token request form")
}
if form.RedirectURI != nil {
c.Request.Form.Set("redirect_uri", *form.RedirectURI)
} else {
help = append(help, "redirect_uri was not set in the token request form")
}
var code string
if form.Code != nil {
if grantType != "authorization_code" {
help = append(help, "a code was provided in the token request form, but grant_type was not set to authorization_code")
} else {
code = *form.Code
c.Request.Form.Set("code", code)
}
} else if grantType == "authorization_code" {
help = append(help, "code was not set in the token request form, but must be set since grant_type is authorization_code")
}
if form.Scope != nil {
c.Request.Form.Set("scope", *form.Scope)
}
if len(help) != 0 {
apiutil.OAuthErrorHandler(c, gtserror.NewErrorBadRequest(oauth.ErrInvalidRequest, help...))
return
}
token, errWithCode := m.processor.OAuthHandleTokenRequest(c.Request)
if errWithCode != nil {
apiutil.OAuthErrorHandler(c, errWithCode)
return
}
c.Header("Cache-Control", "no-store")
c.Header("Pragma", "no-cache")
apiutil.EncodeJSONResponse(
c.Writer,
c.Request,
http.StatusOK,
apiutil.AppJSON,
token,
)
}