gotosocial/internal/message/mediaprocess.go
Tobi Smethurst 6cd033449f
Refine statuses (#26)
Remote media is now dereferenced and attached properly to incoming federated statuses.
    Mentions are now dereferenced and attached properly to incoming federated statuses.
    Small fixes to status visibility.
    Allow URL params for filtering statuses:

	// ExcludeRepliesKey is for specifying whether to exclude replies in a list of returned statuses by an account.
      	// PinnedKey is for specifying whether to include pinned statuses in a list of returned statuses by an account.
      	// MaxIDKey is for specifying the maximum ID of the status to retrieve.
      	// MediaOnlyKey is for specifying that only statuses with media should be returned in a list of returned statuses by an account.

    Add endpoint for fetching an account's statuses.
2021-05-17 19:06:58 +02:00

285 lines
9.8 KiB
Go

/*
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 message
import (
"bytes"
"errors"
"fmt"
"io"
"strconv"
"strings"
apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/media"
"github.com/superseriousbusiness/gotosocial/internal/oauth"
)
func (p *processor) MediaCreate(authed *oauth.Auth, form *apimodel.AttachmentRequest) (*apimodel.Attachment, error) {
// First check this user/account is permitted to create media
// There's no point continuing otherwise.
//
// TODO: move this check to the oauth.Authed function and do it for all accounts
if authed.User.Disabled || !authed.User.Approved || !authed.Account.SuspendedAt.IsZero() {
return nil, errors.New("not authorized to post new media")
}
// open the attachment and extract the bytes from it
f, err := form.File.Open()
if err != nil {
return nil, fmt.Errorf("error opening attachment: %s", err)
}
buf := new(bytes.Buffer)
size, err := io.Copy(buf, f)
if err != nil {
return nil, fmt.Errorf("error reading attachment: %s", err)
}
if size == 0 {
return nil, errors.New("could not read provided attachment: size 0 bytes")
}
// allow the mediaHandler to work its magic of processing the attachment bytes, and putting them in whatever storage backend we're using
attachment, err := p.mediaHandler.ProcessAttachment(buf.Bytes(), authed.Account.ID, "")
if err != nil {
return nil, fmt.Errorf("error reading attachment: %s", err)
}
// now we need to add extra fields that the attachment processor doesn't know (from the form)
// TODO: handle this inside mediaHandler.ProcessAttachment (just pass more params to it)
// first description
attachment.Description = form.Description
// now parse the focus parameter
focusx, focusy, err := parseFocus(form.Focus)
if err != nil {
return nil, err
}
attachment.FileMeta.Focus.X = focusx
attachment.FileMeta.Focus.Y = focusy
// prepare the frontend representation now -- if there are any errors here at least we can bail without
// having already put something in the database and then having to clean it up again (eugh)
mastoAttachment, err := p.tc.AttachmentToMasto(attachment)
if err != nil {
return nil, fmt.Errorf("error parsing media attachment to frontend type: %s", err)
}
// now we can confidently put the attachment in the database
if err := p.db.Put(attachment); err != nil {
return nil, fmt.Errorf("error storing media attachment in db: %s", err)
}
return &mastoAttachment, nil
}
func (p *processor) MediaGet(authed *oauth.Auth, mediaAttachmentID string) (*apimodel.Attachment, ErrorWithCode) {
attachment := &gtsmodel.MediaAttachment{}
if err := p.db.GetByID(mediaAttachmentID, attachment); err != nil {
if _, ok := err.(db.ErrNoEntries); ok {
// attachment doesn't exist
return nil, NewErrorNotFound(errors.New("attachment doesn't exist in the db"))
}
return nil, NewErrorNotFound(fmt.Errorf("db error getting attachment: %s", err))
}
if attachment.AccountID != authed.Account.ID {
return nil, NewErrorNotFound(errors.New("attachment not owned by requesting account"))
}
a, err := p.tc.AttachmentToMasto(attachment)
if err != nil {
return nil, NewErrorNotFound(fmt.Errorf("error converting attachment: %s", err))
}
return &a, nil
}
func (p *processor) MediaUpdate(authed *oauth.Auth, mediaAttachmentID string, form *apimodel.AttachmentUpdateRequest) (*apimodel.Attachment, ErrorWithCode) {
attachment := &gtsmodel.MediaAttachment{}
if err := p.db.GetByID(mediaAttachmentID, attachment); err != nil {
if _, ok := err.(db.ErrNoEntries); ok {
// attachment doesn't exist
return nil, NewErrorNotFound(errors.New("attachment doesn't exist in the db"))
}
return nil, NewErrorNotFound(fmt.Errorf("db error getting attachment: %s", err))
}
if attachment.AccountID != authed.Account.ID {
return nil, NewErrorNotFound(errors.New("attachment not owned by requesting account"))
}
if form.Description != nil {
attachment.Description = *form.Description
if err := p.db.UpdateByID(mediaAttachmentID, attachment); err != nil {
return nil, NewErrorInternalError(fmt.Errorf("database error updating description: %s", err))
}
}
if form.Focus != nil {
focusx, focusy, err := parseFocus(*form.Focus)
if err != nil {
return nil, NewErrorBadRequest(err)
}
attachment.FileMeta.Focus.X = focusx
attachment.FileMeta.Focus.Y = focusy
if err := p.db.UpdateByID(mediaAttachmentID, attachment); err != nil {
return nil, NewErrorInternalError(fmt.Errorf("database error updating focus: %s", err))
}
}
a, err := p.tc.AttachmentToMasto(attachment)
if err != nil {
return nil, NewErrorNotFound(fmt.Errorf("error converting attachment: %s", err))
}
return &a, nil
}
func (p *processor) FileGet(authed *oauth.Auth, form *apimodel.GetContentRequestForm) (*apimodel.Content, error) {
// parse the form fields
mediaSize, err := media.ParseMediaSize(form.MediaSize)
if err != nil {
return nil, NewErrorNotFound(fmt.Errorf("media size %s not valid", form.MediaSize))
}
mediaType, err := media.ParseMediaType(form.MediaType)
if err != nil {
return nil, 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, 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 := &gtsmodel.Account{}
if err := p.db.GetByID(form.AccountID, acct); err != nil {
return nil, NewErrorNotFound(fmt.Errorf("account with id %s could not be selected from the db: %s", form.AccountID, err))
}
if !acct.SuspendedAt.IsZero() {
return nil, 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 authed.Account != nil {
blocked, err := p.db.Blocked(authed.Account.ID, form.AccountID)
if err != nil {
return nil, NewErrorNotFound(fmt.Errorf("block status could not be established between accounts %s and %s: %s", form.AccountID, authed.Account.ID, err))
}
if blocked {
return nil, NewErrorNotFound(fmt.Errorf("block exists between accounts %s and %s", form.AccountID, authed.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.Emoji:
e := &gtsmodel.Emoji{}
if err := p.db.GetByID(wantedMediaID, e); err != nil {
return nil, NewErrorNotFound(fmt.Errorf("emoji %s could not be taken from the db: %s", wantedMediaID, err))
}
if e.Disabled {
return nil, NewErrorNotFound(fmt.Errorf("emoji %s has been disabled", wantedMediaID))
}
switch mediaSize {
case media.Original:
content.ContentType = e.ImageContentType
storagePath = e.ImagePath
case media.Static:
content.ContentType = e.ImageStaticContentType
storagePath = e.ImageStaticPath
default:
return nil, NewErrorNotFound(fmt.Errorf("media size %s not recognized for emoji", mediaSize))
}
case media.Attachment, media.Header, media.Avatar:
a := &gtsmodel.MediaAttachment{}
if err := p.db.GetByID(wantedMediaID, a); err != nil {
return nil, NewErrorNotFound(fmt.Errorf("attachment %s could not be taken from the db: %s", wantedMediaID, err))
}
if a.AccountID != form.AccountID {
return nil, NewErrorNotFound(fmt.Errorf("attachment %s is not owned by %s", wantedMediaID, form.AccountID))
}
switch mediaSize {
case media.Original:
content.ContentType = a.File.ContentType
storagePath = a.File.Path
case media.Small:
content.ContentType = a.Thumbnail.ContentType
storagePath = a.Thumbnail.Path
default:
return nil, NewErrorNotFound(fmt.Errorf("media size %s not recognized for attachment", mediaSize))
}
}
bytes, err := p.storage.RetrieveFileFrom(storagePath)
if err != nil {
return nil, NewErrorNotFound(fmt.Errorf("error retrieving from storage: %s", err))
}
content.ContentLength = int64(len(bytes))
content.Content = bytes
return content, nil
}
func parseFocus(focus string) (focusx, focusy float32, err error) {
if focus == "" {
return
}
spl := strings.Split(focus, ",")
if len(spl) != 2 {
err = fmt.Errorf("improperly formatted focus %s", focus)
return
}
xStr := spl[0]
yStr := spl[1]
if xStr == "" || yStr == "" {
err = fmt.Errorf("improperly formatted focus %s", focus)
return
}
fx, err := strconv.ParseFloat(xStr, 32)
if err != nil {
err = fmt.Errorf("improperly formatted focus %s: %s", focus, err)
return
}
if fx > 1 || fx < -1 {
err = fmt.Errorf("improperly formatted focus %s", focus)
return
}
focusx = float32(fx)
fy, err := strconv.ParseFloat(yStr, 32)
if err != nil {
err = fmt.Errorf("improperly formatted focus %s: %s", focus, err)
return
}
if fy > 1 || fy < -1 {
err = fmt.Errorf("improperly formatted focus %s", focus)
return
}
focusy = float32(fy)
return
}