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package message
import (
"bytes"
"errors"
"fmt"
"io"
"strconv"
"strings"
apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
"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.
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.ProcessLocalAttachment(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
// TODO: tidy this up into a separate function and just return an error so all the c.JSON and return calls are obviated
var focusx, focusy float32
if form.Focus != "" {
spl := strings.Split(form.Focus, ",")
if len(spl) != 2 {
return nil, fmt.Errorf("improperly formatted focus %s", form.Focus)
}
xStr := spl[0]
yStr := spl[1]
if xStr == "" || yStr == "" {
return nil, fmt.Errorf("improperly formatted focus %s", form.Focus)
}
fx, err := strconv.ParseFloat(xStr, 32)
if err != nil {
return nil, fmt.Errorf("improperly formatted focus %s: %s", form.Focus, err)
}
if fx > 1 || fx < -1 {
return nil, fmt.Errorf("improperly formatted focus %s", form.Focus)
}
focusx = float32(fx)
fy, err := strconv.ParseFloat(yStr, 32)
if err != nil {
return nil, fmt.Errorf("improperly formatted focus %s: %s", form.Focus, err)
}
if fy > 1 || fy < -1 {
return nil, fmt.Errorf("improperly formatted focus %s", form.Focus)
}
focusy = float32(fy)
}
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, 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 := >smodel.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 := >smodel.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 := >smodel.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
}
|
