gotosocial/internal/api/wellknown/webfinger/webfingerget.go

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/*
GoToSocial
Copyright (C) 2021-2023 GoToSocial Authors admin@gotosocial.org
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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 webfinger
import (
"errors"
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"fmt"
"net/http"
"github.com/gin-gonic/gin"
apiutil "github.com/superseriousbusiness/gotosocial/internal/api/util"
"github.com/superseriousbusiness/gotosocial/internal/config"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/util"
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)
// WebfingerGETRequest swagger:operation GET /.well-known/webfinger webfingerGet
//
// Handles webfinger account lookup requests.
//
// For example, a GET to `https://goblin.technology/.well-known/webfinger?resource=acct:tobi@goblin.technology` would return:
//
// ```
//
// {"subject":"acct:tobi@goblin.technology","aliases":["https://goblin.technology/users/tobi","https://goblin.technology/@tobi"],"links":[{"rel":"http://webfinger.net/rel/profile-page","type":"text/html","href":"https://goblin.technology/@tobi"},{"rel":"self","type":"application/activity+json","href":"https://goblin.technology/users/tobi"}]}
//
// ```
//
// See: https://webfinger.net/
//
// ---
// tags:
// - .well-known
//
// produces:
// - application/json
//
// responses:
// '200':
// schema:
// "$ref": "#/definitions/wellKnownResponse"
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func (m *Module) WebfingerGETRequest(c *gin.Context) {
if _, err := apiutil.NegotiateAccept(c, apiutil.JSONAcceptHeaders...); err != nil {
apiutil.ErrorHandler(c, gtserror.NewErrorNotAcceptable(err, err.Error()), m.processor.InstanceGet)
return
}
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resourceQuery, set := c.GetQuery("resource")
if !set || resourceQuery == "" {
err := errors.New("no 'resource' in request query")
apiutil.ErrorHandler(c, gtserror.NewErrorBadRequest(err, err.Error()), m.processor.InstanceGet)
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return
}
requestedUsername, requestedHost, err := util.ExtractWebfingerParts(resourceQuery)
if err != nil {
err := fmt.Errorf("bad webfinger request with resource query %s: %w", resourceQuery, err)
apiutil.ErrorHandler(c, gtserror.NewErrorBadRequest(err, err.Error()), m.processor.InstanceGet)
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return
}
if requestedHost != config.GetHost() && requestedHost != config.GetAccountDomain() {
err := fmt.Errorf("requested host %s does not belong to this instance", requestedHost)
apiutil.ErrorHandler(c, gtserror.NewErrorBadRequest(err, err.Error()), m.processor.InstanceGet)
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return
}
resp, errWithCode := m.processor.GetWebfingerAccount(c.Request.Context(), requestedUsername)
if errWithCode != nil {
apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGet)
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return
}
c.JSON(http.StatusOK, resp)
}