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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 (
"context"
"fmt"
"strings"
apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/media"
)
func (p *processor) GetFile(ctx context.Context, account *gtsmodel.Account, form *apimodel.GetContentRequestForm) (*apimodel.Content, error) {
// parse the form fields
mediaSize, err := media.ParseMediaSize(form.MediaSize)
if err != nil {
return nil, gtserror.NewErrorNotFound(fmt.Errorf("media size %s not valid", form.MediaSize))
}
mediaType, err := media.ParseMediaType(form.MediaType)
if err != nil {
return nil, gtserror.NewErrorNotFound(fmt.Errorf("media type %s not valid", form.MediaType))
}
spl := strings.Split(form.FileName, ".")
if len(spl) != 2 || spl[0] == "" || spl[1] == "" {
return nil, gtserror.NewErrorNotFound(fmt.Errorf("file name %s not parseable", form.FileName))
}
wantedMediaID := spl[0]
// get the account that owns the media and make sure it's not suspended
acct, err := p.db.GetAccountByID(ctx, form.AccountID)
if err != nil {
return nil, gtserror.NewErrorNotFound(fmt.Errorf("account with id %s could not be selected from the db: %s", form.AccountID, err))
}
if !acct.SuspendedAt.IsZero() {
return nil, gtserror.NewErrorNotFound(fmt.Errorf("account with id %s is suspended", form.AccountID))
}
// make sure the requesting account and the media account don't block each other
if account != nil {
blocked, err := p.db.IsBlocked(ctx, account.ID, form.AccountID, true)
if err != nil {
return nil, gtserror.NewErrorNotFound(fmt.Errorf("block status could not be established between accounts %s and %s: %s", form.AccountID, account.ID, err))
}
if blocked {
return nil, gtserror.NewErrorNotFound(fmt.Errorf("block exists between accounts %s and %s", form.AccountID, account.ID))
}
}
// the way we store emojis is a little different from the way we store other attachments,
// so we need to take different steps depending on the media type being requested
content := &apimodel.Content{}
var storagePath string
switch mediaType {
case media.TypeEmoji:
e := >smodel.Emoji{}
if err := p.db.GetByID(ctx, wantedMediaID, e); err != nil {
return nil, gtserror.NewErrorNotFound(fmt.Errorf("emoji %s could not be taken from the db: %s", wantedMediaID, err))
}
if e.Disabled {
return nil, gtserror.NewErrorNotFound(fmt.Errorf("emoji %s has been disabled", wantedMediaID))
}
switch mediaSize {
case media.SizeOriginal:
content.ContentType = e.ImageContentType
storagePath = e.ImagePath
case media.SizeStatic:
content.ContentType = e.ImageStaticContentType
storagePath = e.ImageStaticPath
default:
return nil, gtserror.NewErrorNotFound(fmt.Errorf("media size %s not recognized for emoji", mediaSize))
}
case media.TypeAttachment, media.TypeHeader, media.TypeAvatar:
a, err := p.db.GetAttachmentByID(ctx, wantedMediaID)
if err != nil {
return nil, gtserror.NewErrorNotFound(fmt.Errorf("attachment %s could not be taken from the db: %s", wantedMediaID, err))
}
if a.AccountID != form.AccountID {
return nil, gtserror.NewErrorNotFound(fmt.Errorf("attachment %s is not owned by %s", wantedMediaID, form.AccountID))
}
switch mediaSize {
case media.SizeOriginal:
content.ContentType = a.File.ContentType
storagePath = a.File.Path
case media.SizeSmall:
content.ContentType = a.Thumbnail.ContentType
storagePath = a.Thumbnail.Path
default:
return nil, gtserror.NewErrorNotFound(fmt.Errorf("media size %s not recognized for attachment", mediaSize))
}
}
bytes, err := p.storage.Get(storagePath)
if err != nil {
return nil, gtserror.NewErrorNotFound(fmt.Errorf("error retrieving from storage: %s", err))
}
content.ContentLength = int64(len(bytes))
content.Content = bytes
return content, nil
}
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