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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 media
import (
"errors"
"fmt"
"net/http"
"github.com/sirupsen/logrus"
"github.com/spf13/viper"
"github.com/gin-gonic/gin"
"github.com/superseriousbusiness/gotosocial/internal/api"
"github.com/superseriousbusiness/gotosocial/internal/api/model"
"github.com/superseriousbusiness/gotosocial/internal/config"
"github.com/superseriousbusiness/gotosocial/internal/oauth"
)
// MediaCreatePOSTHandler swagger:operation POST /api/v1/media mediaCreate
//
// Upload a new media attachment.
//
// ---
// tags:
// - media
//
// consumes:
// - multipart/form-data
//
// produces:
// - application/json
//
// parameters:
// - name: description
// in: formData
// description: |-
// Image or media description to use as alt-text on the attachment.
// This is very useful for users of screenreaders.
// May or may not be required, depending on your instance settings.
// type: string
// - name: focus
// in: formData
// description: |-
// Focus of the media file.
// If present, it should be in the form of two comma-separated floats between -1 and 1.
// For example: `-0.5,0.25`.
// type: string
// - name: file
// in: formData
// description: The media attachment to upload.
// type: file
// required: true
//
// security:
// - OAuth2 Bearer:
// - write:media
//
// responses:
// '200':
// description: The newly-created media attachment.
// schema:
// "$ref": "#/definitions/attachment"
// '400':
// description: bad request
// '401':
// description: unauthorized
// '403':
// description: forbidden
// '422':
// description: unprocessable
func (m *Module) MediaCreatePOSTHandler(c *gin.Context) {
l := logrus.WithField("func", "statusCreatePOSTHandler")
authed, err := oauth.Authed(c, true, true, true, true) // posting new media is serious business so we want *everything*
if err != nil {
l.Debugf("couldn't auth: %s", err)
c.JSON(http.StatusUnauthorized, gin.H{"error": err.Error()})
return
}
if _, err := api.NegotiateAccept(c, api.JSONAcceptHeaders...); err != nil {
c.JSON(http.StatusNotAcceptable, gin.H{"error": err.Error()})
return
}
// extract the media create form from the request context
l.Tracef("parsing request form: %s", c.Request.Form)
form := &model.AttachmentRequest{}
if err := c.ShouldBind(&form); err != nil {
l.Debugf("error parsing form: %s", err)
c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Errorf("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 := validateCreateMedia(form); err != nil {
l.Debugf("error validating form: %s", err)
c.JSON(http.StatusUnprocessableEntity, gin.H{"error": err.Error()})
return
}
l.Debug("calling processor media create func")
apiAttachment, err := m.processor.MediaCreate(c.Request.Context(), authed, form)
if err != nil {
l.Debugf("error creating attachment: %s", err)
c.JSON(http.StatusUnprocessableEntity, gin.H{"error": err.Error()})
return
}
c.JSON(http.StatusOK, apiAttachment)
}
func validateCreateMedia(form *model.AttachmentRequest) error {
// check there actually is a file attached and it's not size 0
if form.File == nil {
return errors.New("no attachment given")
}
keys := config.Keys
maxVideoSize := viper.GetInt(keys.MediaVideoMaxSize)
maxImageSize := viper.GetInt(keys.MediaImageMaxSize)
minDescriptionChars := viper.GetInt(keys.MediaDescriptionMinChars)
maxDescriptionChars := viper.GetInt(keys.MediaDescriptionMaxChars)
// a very superficial check to see if no size limits are exceeded
// we still don't actually know which media types we're dealing with but the other handlers will go into more detail there
maxSize := maxVideoSize
if maxImageSize > maxSize {
maxSize = maxImageSize
}
if form.File.Size > int64(maxSize) {
return fmt.Errorf("file size limit exceeded: limit is %d bytes but attachment was %d bytes", maxSize, form.File.Size)
}
if len(form.Description) < minDescriptionChars || len(form.Description) > maxDescriptionChars {
return fmt.Errorf("image description length must be between %d and %d characters (inclusive), but provided image description was %d chars", minDescriptionChars, maxDescriptionChars, len(form.Description))
}
// TODO: validate focus here
return nil
}
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