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/*
GoToSocial
Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
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 (
"context"
"fmt"
"net/http"
"codeberg.org/gruf/go-kv"
"github.com/gin-gonic/gin"
"github.com/superseriousbusiness/gotosocial/internal/ap"
"github.com/superseriousbusiness/gotosocial/internal/api"
"github.com/superseriousbusiness/gotosocial/internal/config"
"github.com/superseriousbusiness/gotosocial/internal/log"
"github.com/superseriousbusiness/gotosocial/internal/util"
)
// 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:
// - webfinger
//
// produces:
// - application/json
//
// responses:
// '200':
// schema:
// "$ref": "#/definitions/wellKnownResponse"
func (m *Module) WebfingerGETRequest(c *gin.Context) {
l := log.WithFields(kv.Fields{
{K: "user-agent", V: c.Request.UserAgent()},
}...)
resourceQuery, set := c.GetQuery("resource")
if !set || resourceQuery == "" {
l.Debug("aborting request because no resource was set in query")
c.JSON(http.StatusBadRequest, gin.H{"error": "no 'resource' in request query"})
return
}
requestedUsername, requestedHost, err := util.ExtractWebfingerParts(resourceQuery)
if err != nil {
l.Debugf("bad webfinger request with resource query %s: %s", resourceQuery, err)
c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Sprintf("bad webfinger request with resource query %s", resourceQuery)})
return
}
accountDomain := config.GetAccountDomain()
host := config.GetHost()
if requestedHost != host && requestedHost != accountDomain {
l.Debugf("aborting request because requestedHost %s does not belong to this instance", requestedHost)
c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Sprintf("requested host %s does not belong to this instance", requestedHost)})
return
}
// transfer the signature verifier from the gin context to the request context
ctx := c.Request.Context()
verifier, signed := c.Get(string(ap.ContextRequestingPublicKeyVerifier))
if signed {
ctx = context.WithValue(ctx, ap.ContextRequestingPublicKeyVerifier, verifier)
}
resp, errWithCode := m.processor.GetWebfingerAccount(ctx, requestedUsername)
if errWithCode != nil {
api.ErrorHandler(c, errWithCode, m.processor.InstanceGet)
return
}
c.JSON(http.StatusOK, resp)
}
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