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/*
GoToSocial
Copyright (C) 2021 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 admin
import (
"bytes"
"errors"
"fmt"
"io"
"net/http"
"github.com/gin-gonic/gin"
"github.com/sirupsen/logrus"
mastotypes "github.com/superseriousbusiness/gotosocial/internal/mastotypes/mastomodel"
"github.com/superseriousbusiness/gotosocial/internal/media"
"github.com/superseriousbusiness/gotosocial/internal/oauth"
"github.com/superseriousbusiness/gotosocial/internal/util"
)
func (m *Module) emojiCreatePOSTHandler(c *gin.Context) {
l := m.log.WithFields(logrus.Fields{
"func": "emojiCreatePOSTHandler",
"request_uri": c.Request.RequestURI,
"user_agent": c.Request.UserAgent(),
"origin_ip": c.ClientIP(),
})
// make sure we're authed with an admin account
authed, err := oauth.MustAuth(c, true, true, true, true) // posting a status is serious business so we want *everything*
if err != nil {
l.Debugf("couldn't auth: %s", err)
c.JSON(http.StatusForbidden, gin.H{"error": err.Error()})
return
}
if !authed.User.Admin {
l.Debugf("user %s not an admin", authed.User.ID)
c.JSON(http.StatusForbidden, gin.H{"error": "not an admin"})
return
}
// extract the media create form from the request context
l.Tracef("parsing request form: %+v", c.Request.Form)
form := &mastotypes.EmojiCreateRequest{}
if err := c.ShouldBind(form); err != nil {
l.Debugf("error parsing form %+v: %s", c.Request.Form, err)
c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Sprintf("could not parse form: %s", err)})
return
}
// Give the fields on the request form a first pass to make sure the request is superficially valid.
l.Tracef("validating form %+v", form)
if err := validateCreateEmoji(form); err != nil {
l.Debugf("error validating form: %s", err)
c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
return
}
// open the emoji and extract the bytes from it
f, err := form.Image.Open()
if err != nil {
l.Debugf("error opening emoji: %s", err)
c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Sprintf("could not open provided emoji: %s", err)})
return
}
buf := new(bytes.Buffer)
size, err := io.Copy(buf, f)
if err != nil {
l.Debugf("error reading emoji: %s", err)
c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Sprintf("could not read provided emoji: %s", err)})
return
}
if size == 0 {
l.Debug("could not read provided emoji: size 0 bytes")
c.JSON(http.StatusBadRequest, gin.H{"error": "could not read provided emoji: size 0 bytes"})
return
}
// allow the mediaHandler to work its magic of processing the emoji bytes, and putting them in whatever storage backend we're using
emoji, err := m.mediaHandler.ProcessLocalEmoji(buf.Bytes(), form.Shortcode)
if err != nil {
l.Debugf("error reading emoji: %s", err)
c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Sprintf("could not process emoji: %s", err)})
return
}
mastoEmoji, err := m.mastoConverter.EmojiToMasto(emoji)
if err != nil {
l.Debugf("error converting emoji to mastotype: %s", err)
c.JSON(http.StatusInternalServerError, gin.H{"error": fmt.Sprintf("could not convert emoji: %s", err)})
return
}
if err := m.db.Put(emoji); err != nil {
l.Debugf("database error while processing emoji: %s", err)
c.JSON(http.StatusInternalServerError, gin.H{"error": fmt.Sprintf("database error while processing emoji: %s", err)})
return
}
c.JSON(http.StatusOK, mastoEmoji)
}
func validateCreateEmoji(form *mastotypes.EmojiCreateRequest) error {
// check there actually is an image attached and it's not size 0
if form.Image == nil || form.Image.Size == 0 {
return errors.New("no emoji given")
}
// a very superficial check to see if the media size limit is exceeded
if form.Image.Size > media.EmojiMaxBytes {
return fmt.Errorf("file size limit exceeded: limit is %d bytes but emoji was %d bytes", media.EmojiMaxBytes, form.Image.Size)
}
return util.ValidateEmojiShortcode(form.Shortcode)
}
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