gotosocial/internal/api/s2s/user/publickeyget.go

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package user
import (
"context"
"encoding/json"
"fmt"
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"net/http"
"github.com/gin-gonic/gin"
"github.com/sirupsen/logrus"
"github.com/superseriousbusiness/gotosocial/internal/util"
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)
// PublicKeyGETHandler should be served at eg https://example.org/users/:username/main-key.
//
// The goal here is to return a MINIMAL activitypub representation of an account
// in the form of a vocab.ActivityStreamsPerson. The account will only contain the id,
// public key, username, and type of the account.
func (m *Module) PublicKeyGETHandler(c *gin.Context) {
l := m.log.WithFields(logrus.Fields{
"func": "PublicKeyGETHandler",
"url": c.Request.RequestURI,
})
requestedUsername := c.Param(UsernameKey)
if requestedUsername == "" {
c.JSON(http.StatusBadRequest, gin.H{"error": "no username specified in request"})
return
}
// make sure this actually an AP request
format := c.NegotiateFormat(ActivityPubAcceptHeaders...)
if format == "" {
c.JSON(http.StatusNotAcceptable, gin.H{"error": "could not negotiate format with given Accept header(s)"})
return
}
l.Tracef("negotiated format: %s", format)
// transfer the signature verifier from the gin context to the request context
ctx := c.Request.Context()
verifier, signed := c.Get(string(util.APRequestingPublicKeyVerifier))
if signed {
ctx = context.WithValue(ctx, util.APRequestingPublicKeyVerifier, verifier)
}
user, err := m.processor.GetFediUser(ctx, requestedUsername, c.Request.URL) // GetFediUser handles auth as well
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if err != nil {
l.Info(err.Error())
c.JSON(err.Code(), gin.H{"error": err.Safe()})
return
}
b, mErr := json.Marshal(user)
if mErr != nil {
err := fmt.Errorf("could not marshal json: %s", mErr)
l.Error(err)
c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
return
}
c.Data(http.StatusOK, format, b)
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}