1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
/*
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"
"strings"
"time"
"github.com/google/uuid"
"github.com/sirupsen/logrus"
"github.com/superseriousbusiness/gotosocial/internal/config"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/db/model"
"github.com/superseriousbusiness/gotosocial/internal/storage"
)
// MediaHandler provides an interface for parsing, storing, and retrieving media objects like photos, videos, and gifs.
type MediaHandler interface {
// SetHeaderOrAvatarForAccountID takes a new header image for an account, checks it out, removes exif data from it,
// puts it in whatever storage backend we're using, sets the relevant fields in the database for the new image,
// and then returns information to the caller about the new header.
SetHeaderOrAvatarForAccountID(img []byte, accountID string, headerOrAvi string) (*model.MediaAttachment, error)
}
type mediaHandler struct {
config *config.Config
db db.DB
storage storage.Storage
log *logrus.Logger
}
func New(config *config.Config, database db.DB, storage storage.Storage, log *logrus.Logger) MediaHandler {
return &mediaHandler{
config: config,
db: database,
storage: storage,
log: log,
}
}
// HeaderInfo wraps the urls at which a Header and a StaticHeader is available from the server.
type HeaderInfo struct {
// URL to the header
Header string
// Static version of the above (eg., a path to a still image if the header is a gif)
HeaderStatic string
}
/*
INTERFACE FUNCTIONS
*/
func (mh *mediaHandler) SetHeaderOrAvatarForAccountID(img []byte, accountID string, headerOrAvi string) (*model.MediaAttachment, error) {
l := mh.log.WithField("func", "SetHeaderForAccountID")
if headerOrAvi != "header" && headerOrAvi != "avatar" {
return nil, errors.New("header or avatar not selected")
}
// make sure we have an image we can handle
contentType, err := parseContentType(img)
if err != nil {
return nil, err
}
if !supportedImageType(contentType) {
return nil, fmt.Errorf("%s is not an accepted image type", contentType)
}
if len(img) == 0 {
return nil, fmt.Errorf("passed reader was of size 0")
}
l.Tracef("read %d bytes of file", len(img))
// process it
ma, err := mh.processHeaderOrAvi(img, contentType, headerOrAvi, accountID)
if err != nil {
return nil, fmt.Errorf("error processing %s: %s", headerOrAvi, err)
}
// set it in the database
if err := mh.db.SetHeaderOrAvatarForAccountID(ma, accountID); err != nil {
return nil, fmt.Errorf("error putting %s in database: %s", headerOrAvi, err)
}
return ma, nil
}
/*
HELPER FUNCTIONS
*/
func (mh *mediaHandler) processHeaderOrAvi(imageBytes []byte, contentType string, headerOrAvi string, accountID string) (*model.MediaAttachment, error) {
var isHeader bool
var isAvatar bool
switch headerOrAvi {
case "header":
isHeader = true
case "avatar":
isAvatar = true
default:
return nil, errors.New("header or avatar not selected")
}
var clean []byte
var err error
switch contentType {
case "image/jpeg":
if clean, err = purgeExif(imageBytes); err != nil {
return nil, fmt.Errorf("error cleaning exif data: %s", err)
}
case "image/png":
if clean, err = purgeExif(imageBytes); err != nil {
return nil, fmt.Errorf("error cleaning exif data: %s", err)
}
case "image/gif":
clean = imageBytes
default:
return nil, errors.New("media type unrecognized")
}
original, err := deriveImage(clean, contentType)
if err != nil {
return nil, fmt.Errorf("error parsing image: %s", err)
}
small, err := deriveThumbnail(clean, contentType)
if err != nil {
return nil, fmt.Errorf("error deriving thumbnail: %s", err)
}
// now put it in storage, take a new uuid for the name of the file so we don't store any unnecessary info about it
extension := strings.Split(contentType, "/")[1]
newMediaID := uuid.NewString()
base := fmt.Sprintf("%s://%s%s", mh.config.StorageConfig.ServeProtocol, mh.config.StorageConfig.ServeHost, mh.config.StorageConfig.ServeBasePath)
// we store the original...
originalPath := fmt.Sprintf("%s/%s/%s/original/%s.%s", base, accountID, headerOrAvi, newMediaID, extension)
if err := mh.storage.StoreFileAt(originalPath, original.image); err != nil {
return nil, fmt.Errorf("storage error: %s", err)
}
// and a thumbnail...
smallPath := fmt.Sprintf("%s/%s/%s/small/%s.%s", base, accountID, headerOrAvi, newMediaID, extension)
if err := mh.storage.StoreFileAt(smallPath, small.image); err != nil {
return nil, fmt.Errorf("storage error: %s", err)
}
ma := &model.MediaAttachment{
ID: newMediaID,
StatusID: "",
RemoteURL: "",
CreatedAt: time.Now(),
UpdatedAt: time.Now(),
Type: model.FileTypeImage,
FileMeta: model.FileMeta{
Original: model.Original{
Width: original.width,
Height: original.height,
Size: original.size,
Aspect: original.aspect,
},
Small: model.Small{
Width: small.width,
Height: small.height,
Size: small.size,
Aspect: small.aspect,
},
},
AccountID: accountID,
Description: "",
ScheduledStatusID: "",
Blurhash: original.blurhash,
Processing: 2,
File: model.File{
Path: originalPath,
ContentType: contentType,
FileSize: len(original.image),
UpdatedAt: time.Now(),
},
Thumbnail: model.Thumbnail{
Path: smallPath,
ContentType: contentType,
FileSize: len(small.image),
UpdatedAt: time.Now(),
RemoteURL: "",
},
Avatar: isAvatar,
Header: isHeader,
}
return ma, nil
}
|
