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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 web
import (
"context"
"encoding/json"
"errors"
"fmt"
"net/http"
"strings"
"github.com/gin-gonic/gin"
"github.com/superseriousbusiness/gotosocial/internal/ap"
apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
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/oauth"
)
func (m *Module) threadGETHandler(c *gin.Context) {
ctx := c.Request.Context()
authed, err := oauth.Authed(c, false, false, false, false)
if err != nil {
apiutil.ErrorHandler(c, gtserror.NewErrorUnauthorized(err, err.Error()), m.processor.InstanceGet)
return
}
// usernames on our instance will always be lowercase
username := strings.ToLower(c.Param(usernameKey))
if username == "" {
err := errors.New("no account username specified")
apiutil.ErrorHandler(c, gtserror.NewErrorBadRequest(err, err.Error()), m.processor.InstanceGet)
return
}
// status ids will always be uppercase
statusID := strings.ToUpper(c.Param(statusIDKey))
if statusID == "" {
err := errors.New("no status id specified")
apiutil.ErrorHandler(c, gtserror.NewErrorBadRequest(err, err.Error()), m.processor.InstanceGet)
return
}
host := config.GetHost()
instance, err := m.processor.InstanceGet(ctx, host)
if err != nil {
apiutil.ErrorHandler(c, gtserror.NewErrorInternalError(err), m.processor.InstanceGet)
return
}
instanceGet := func(ctx context.Context, domain string) (*apimodel.Instance, gtserror.WithCode) {
return instance, nil
}
// do this check to make sure the status is actually from a local account,
// we shouldn't render threads from statuses that don't belong to us!
if _, errWithCode := m.processor.AccountGetLocalByUsername(ctx, authed, username); errWithCode != nil {
apiutil.ErrorHandler(c, errWithCode, instanceGet)
return
}
status, errWithCode := m.processor.StatusGet(ctx, authed, statusID)
if errWithCode != nil {
apiutil.ErrorHandler(c, errWithCode, instanceGet)
return
}
if !strings.EqualFold(username, status.Account.Username) {
err := gtserror.NewErrorNotFound(errors.New("path username not equal to status author username"))
apiutil.ErrorHandler(c, gtserror.NewErrorNotFound(err), instanceGet)
return
}
// if we're getting an AP request on this endpoint we
// should render the status's AP representation instead
accept := c.NegotiateFormat(string(apiutil.TextHTML), string(apiutil.AppActivityJSON), string(apiutil.AppActivityLDJSON))
if accept == string(apiutil.AppActivityJSON) || accept == string(apiutil.AppActivityLDJSON) {
m.returnAPStatus(ctx, c, username, statusID, accept)
return
}
context, errWithCode := m.processor.StatusGetContext(ctx, authed, statusID)
if errWithCode != nil {
apiutil.ErrorHandler(c, errWithCode, instanceGet)
return
}
stylesheets := []string{
assetsPathPrefix + "/Fork-Awesome/css/fork-awesome.min.css",
distPathPrefix + "/status.css",
}
if config.GetAccountsAllowCustomCSS() {
stylesheets = append(stylesheets, "/@"+username+"/custom.css")
}
c.HTML(http.StatusOK, "thread.tmpl", gin.H{
"instance": instance,
"status": status,
"context": context,
"ogMeta": ogBase(instance).withStatus(status),
"stylesheets": stylesheets,
"javascript": []string{distPathPrefix + "/frontend.js"},
})
}
func (m *Module) returnAPStatus(ctx context.Context, c *gin.Context, username string, statusID string, accept string) {
verifier, signed := c.Get(string(ap.ContextRequestingPublicKeyVerifier))
if signed {
ctx = context.WithValue(ctx, ap.ContextRequestingPublicKeyVerifier, verifier)
}
signature, signed := c.Get(string(ap.ContextRequestingPublicKeySignature))
if signed {
ctx = context.WithValue(ctx, ap.ContextRequestingPublicKeySignature, signature)
}
status, errWithCode := m.processor.GetFediStatus(ctx, username, statusID, c.Request.URL)
if errWithCode != nil {
apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGet) //nolint:contextcheck
return
}
b, mErr := json.Marshal(status)
if mErr != nil {
err := fmt.Errorf("could not marshal json: %s", mErr)
apiutil.ErrorHandler(c, gtserror.NewErrorInternalError(err), m.processor.InstanceGet) //nolint:contextcheck
return
}
c.Data(http.StatusOK, accept, b)
}
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