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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 media
import (
"errors"
"fmt"
"net/http"
"github.com/gin-gonic/gin"
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"
)
// MediaCreatePOSTHandler swagger:operation POST /api/{api_version}/media mediaCreate
//
// Upload a new media attachment.
//
// ---
// tags:
// - media
//
// consumes:
// - multipart/form-data
//
// produces:
// - application/json
//
// parameters:
// -
// name: api_version
// type: string
// in: path
// description: Version of the API to use. Must be either `v1` or `v2`.
// required: true
// -
// 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
// default: "0,0"
// -
// 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
// '422':
// description: unprocessable
// '500':
// description: internal server error
func (m *Module) MediaCreatePOSTHandler(c *gin.Context) {
apiVersion := c.Param(APIVersionKey)
if apiVersion != APIv1 && apiVersion != APIv2 {
err := errors.New("api version must be one of v1 or v2 for this path")
apiutil.ErrorHandler(c, gtserror.NewErrorNotFound(err, err.Error()), m.processor.InstanceGet)
return
}
authed, err := oauth.Authed(c, true, true, true, true)
if err != nil {
apiutil.ErrorHandler(c, gtserror.NewErrorUnauthorized(err, err.Error()), m.processor.InstanceGet)
return
}
if _, err := apiutil.NegotiateAccept(c, apiutil.JSONAcceptHeaders...); err != nil {
apiutil.ErrorHandler(c, gtserror.NewErrorNotAcceptable(err, err.Error()), m.processor.InstanceGet)
return
}
form := &apimodel.AttachmentRequest{}
if err := c.ShouldBind(&form); err != nil {
apiutil.ErrorHandler(c, gtserror.NewErrorBadRequest(err, err.Error()), m.processor.InstanceGet)
return
}
if err := validateCreateMedia(form); err != nil {
apiutil.ErrorHandler(c, gtserror.NewErrorBadRequest(err, err.Error()), m.processor.InstanceGet)
return
}
apiAttachment, errWithCode := m.processor.MediaCreate(c.Request.Context(), authed, form)
if errWithCode != nil {
apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGet)
return
}
if apiVersion == APIv2 {
// the mastodon v2 media API specifies that the URL should be null
// and that the client should call /api/v1/media/:id to get the URL
//
// so even though we have the URL already, remove it now to comply
// with the api
apiAttachment.URL = nil
}
c.JSON(http.StatusOK, apiAttachment)
}
func validateCreateMedia(form *apimodel.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")
}
maxVideoSize := config.GetMediaVideoMaxSize()
maxImageSize := config.GetMediaImageMaxSize()
minDescriptionChars := config.GetMediaDescriptionMinChars()
maxDescriptionChars := config.GetMediaDescriptionMaxChars()
// 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 length := len([]rune(form.Description)); length > maxDescriptionChars {
return fmt.Errorf("image description length must be between %d and %d characters (inclusive), but provided image description was %d chars", minDescriptionChars, maxDescriptionChars, length)
}
return nil
}
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