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	* [bugfix] Return `application/jrd+json` from webfinger queries * update finger req content-type
		
			
				
	
	
		
			99 lines
		
	
	
	
		
			3.5 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			99 lines
		
	
	
	
		
			3.5 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
// GoToSocial
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// Copyright (C) GoToSocial Authors admin@gotosocial.org
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// SPDX-License-Identifier: AGPL-3.0-or-later
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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 Affero 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 Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program.  If not, see <http://www.gnu.org/licenses/>.
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package webfinger
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import (
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	"encoding/json"
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	"errors"
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	"fmt"
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	"net/http"
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	"github.com/gin-gonic/gin"
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	apiutil "github.com/superseriousbusiness/gotosocial/internal/api/util"
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	"github.com/superseriousbusiness/gotosocial/internal/config"
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	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
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	"github.com/superseriousbusiness/gotosocial/internal/util"
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)
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// WebfingerGETRequest swagger:operation GET /.well-known/webfinger webfingerGet
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//
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// Handles webfinger account lookup requests.
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//
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// For example, a GET to `https://goblin.technology/.well-known/webfinger?resource=acct:tobi@goblin.technology` would return:
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//
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// ```
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//
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//	{"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"}]}
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//
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// ```
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//
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// See: https://webfinger.net/
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//
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//	---
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//	tags:
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//	- .well-known
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//
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//	produces:
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//	- application/jrd+json
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//
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//	responses:
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//		'200':
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//			schema:
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//				"$ref": "#/definitions/wellKnownResponse"
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func (m *Module) WebfingerGETRequest(c *gin.Context) {
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	if _, err := apiutil.NegotiateAccept(c, apiutil.WebfingerJSONAcceptHeaders...); err != nil {
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		apiutil.ErrorHandler(c, gtserror.NewErrorNotAcceptable(err, err.Error()), m.processor.InstanceGetV1)
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		return
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	}
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	resourceQuery, set := c.GetQuery("resource")
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	if !set || resourceQuery == "" {
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		err := errors.New("no 'resource' in request query")
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		apiutil.ErrorHandler(c, gtserror.NewErrorBadRequest(err, err.Error()), m.processor.InstanceGetV1)
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		return
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	}
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	requestedUsername, requestedHost, err := util.ExtractWebfingerParts(resourceQuery)
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	if err != nil {
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		err := fmt.Errorf("bad webfinger request with resource query %s: %w", resourceQuery, err)
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		apiutil.ErrorHandler(c, gtserror.NewErrorBadRequest(err, err.Error()), m.processor.InstanceGetV1)
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		return
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	}
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	if requestedHost != config.GetHost() && requestedHost != config.GetAccountDomain() {
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		err := fmt.Errorf("requested host %s does not belong to this instance", requestedHost)
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		apiutil.ErrorHandler(c, gtserror.NewErrorBadRequest(err, err.Error()), m.processor.InstanceGetV1)
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		return
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	}
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	resp, errWithCode := m.processor.Fedi().WebfingerGet(c.Request.Context(), requestedUsername)
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	if errWithCode != nil {
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		apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGetV1)
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		return
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	}
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	b, err := json.Marshal(resp)
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	if err != nil {
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		apiutil.ErrorHandler(c, gtserror.NewErrorInternalError(err), m.processor.InstanceGetV1)
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		return
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	}
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	// Always return "application/jrd+json" regardless of negotiated
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	// format. See https://www.rfc-editor.org/rfc/rfc7033#section-10.2
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	c.Data(http.StatusOK, string(apiutil.AppJRDJSON), b)
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}
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