[bugfix] Wrap media reader in length reader to determine length if no content-length given (#848)

* use lengthReader 2 determine fileSize if not given

* update tests

* small fixes

* go fmt
This commit is contained in:
tobi 2022-09-24 11:11:47 +02:00 committed by GitHub
parent 69a193dae5
commit 78409f1985
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6 changed files with 397 additions and 30 deletions

View file

@ -40,6 +40,177 @@ type ManagerTestSuite struct {
MediaStandardTestSuite
}
func (suite *ManagerTestSuite) TestEmojiProcessBlocking() {
ctx := context.Background()
data := func(_ context.Context) (io.Reader, int, error) {
// load bytes from a test image
b, err := os.ReadFile("./test/rainbow-original.png")
if err != nil {
panic(err)
}
return bytes.NewBuffer(b), len(b), nil
}
emojiID := "01GDQ9G782X42BAMFASKP64343"
emojiURI := "http://localhost:8080/emoji/01GDQ9G782X42BAMFASKP64343"
processingEmoji, err := suite.manager.ProcessEmoji(ctx, data, nil, "rainbow_test", emojiID, emojiURI, nil)
suite.NoError(err)
// do a blocking call to fetch the emoji
emoji, err := processingEmoji.LoadEmoji(ctx)
suite.NoError(err)
suite.NotNil(emoji)
// make sure it's got the stuff set on it that we expect
suite.Equal(emojiID, emoji.ID)
// file meta should be correctly derived from the image
suite.Equal("image/png", emoji.ImageContentType)
suite.Equal("image/png", emoji.ImageStaticContentType)
suite.Equal(36702, emoji.ImageFileSize)
// now make sure the emoji is in the database
dbEmoji, err := suite.db.GetEmojiByID(ctx, emojiID)
suite.NoError(err)
suite.NotNil(dbEmoji)
// make sure the processed emoji file is in storage
processedFullBytes, err := suite.storage.Get(ctx, emoji.ImagePath)
suite.NoError(err)
suite.NotEmpty(processedFullBytes)
// load the processed bytes from our test folder, to compare
processedFullBytesExpected, err := os.ReadFile("./test/rainbow-original.png")
suite.NoError(err)
suite.NotEmpty(processedFullBytesExpected)
// the bytes in storage should be what we expected
suite.Equal(processedFullBytesExpected, processedFullBytes)
// now do the same for the thumbnail and make sure it's what we expected
processedStaticBytes, err := suite.storage.Get(ctx, emoji.ImageStaticPath)
suite.NoError(err)
suite.NotEmpty(processedStaticBytes)
processedStaticBytesExpected, err := os.ReadFile("./test/rainbow-static.png")
suite.NoError(err)
suite.NotEmpty(processedStaticBytesExpected)
suite.Equal(processedStaticBytesExpected, processedStaticBytes)
}
func (suite *ManagerTestSuite) TestEmojiProcessBlockingTooLarge() {
ctx := context.Background()
data := func(_ context.Context) (io.Reader, int, error) {
// load bytes from a test image
b, err := os.ReadFile("./test/big-panda.gif")
if err != nil {
panic(err)
}
return bytes.NewBuffer(b), len(b), nil
}
emojiID := "01GDQ9G782X42BAMFASKP64343"
emojiURI := "http://localhost:8080/emoji/01GDQ9G782X42BAMFASKP64343"
processingEmoji, err := suite.manager.ProcessEmoji(ctx, data, nil, "big_panda", emojiID, emojiURI, nil)
suite.NoError(err)
// do a blocking call to fetch the emoji
emoji, err := processingEmoji.LoadEmoji(ctx)
suite.EqualError(err, "store: given emoji fileSize (645688b) is larger than allowed size (51200b)")
suite.Nil(emoji)
}
func (suite *ManagerTestSuite) TestEmojiProcessBlockingTooLargeNoSizeGiven() {
ctx := context.Background()
data := func(_ context.Context) (io.Reader, int, error) {
// load bytes from a test image
b, err := os.ReadFile("./test/big-panda.gif")
if err != nil {
panic(err)
}
return bytes.NewBuffer(b), len(b), nil
}
emojiID := "01GDQ9G782X42BAMFASKP64343"
emojiURI := "http://localhost:8080/emoji/01GDQ9G782X42BAMFASKP64343"
processingEmoji, err := suite.manager.ProcessEmoji(ctx, data, nil, "big_panda", emojiID, emojiURI, nil)
suite.NoError(err)
// do a blocking call to fetch the emoji
emoji, err := processingEmoji.LoadEmoji(ctx)
suite.EqualError(err, "store: given emoji fileSize (645688b) is larger than allowed size (51200b)")
suite.Nil(emoji)
}
func (suite *ManagerTestSuite) TestEmojiProcessBlockingNoFileSizeGiven() {
ctx := context.Background()
data := func(_ context.Context) (io.Reader, int, error) {
// load bytes from a test image
b, err := os.ReadFile("./test/rainbow-original.png")
if err != nil {
panic(err)
}
return bytes.NewBuffer(b), -1, nil
}
emojiID := "01GDQ9G782X42BAMFASKP64343"
emojiURI := "http://localhost:8080/emoji/01GDQ9G782X42BAMFASKP64343"
// process the media with no additional info provided
processingEmoji, err := suite.manager.ProcessEmoji(ctx, data, nil, "rainbow_test", emojiID, emojiURI, nil)
suite.NoError(err)
// do a blocking call to fetch the emoji
emoji, err := processingEmoji.LoadEmoji(ctx)
suite.NoError(err)
suite.NotNil(emoji)
// make sure it's got the stuff set on it that we expect
suite.Equal(emojiID, emoji.ID)
// file meta should be correctly derived from the image
suite.Equal("image/png", emoji.ImageContentType)
suite.Equal("image/png", emoji.ImageStaticContentType)
suite.Equal(36702, emoji.ImageFileSize)
// now make sure the emoji is in the database
dbEmoji, err := suite.db.GetEmojiByID(ctx, emojiID)
suite.NoError(err)
suite.NotNil(dbEmoji)
// make sure the processed emoji file is in storage
processedFullBytes, err := suite.storage.Get(ctx, emoji.ImagePath)
suite.NoError(err)
suite.NotEmpty(processedFullBytes)
// load the processed bytes from our test folder, to compare
processedFullBytesExpected, err := os.ReadFile("./test/rainbow-original.png")
suite.NoError(err)
suite.NotEmpty(processedFullBytesExpected)
// the bytes in storage should be what we expected
suite.Equal(processedFullBytesExpected, processedFullBytes)
// now do the same for the thumbnail and make sure it's what we expected
processedStaticBytes, err := suite.storage.Get(ctx, emoji.ImageStaticPath)
suite.NoError(err)
suite.NotEmpty(processedStaticBytes)
processedStaticBytesExpected, err := os.ReadFile("./test/rainbow-static.png")
suite.NoError(err)
suite.NotEmpty(processedStaticBytesExpected)
suite.Equal(processedStaticBytesExpected, processedStaticBytes)
}
func (suite *ManagerTestSuite) TestSimpleJpegProcessBlocking() {
ctx := context.Background()
@ -112,6 +283,152 @@ func (suite *ManagerTestSuite) TestSimpleJpegProcessBlocking() {
suite.Equal(processedThumbnailBytesExpected, processedThumbnailBytes)
}
func (suite *ManagerTestSuite) TestSimpleJpegProcessBlockingNoContentLengthGiven() {
ctx := context.Background()
data := func(_ context.Context) (io.Reader, int, error) {
// load bytes from a test image
b, err := os.ReadFile("./test/test-jpeg.jpg")
if err != nil {
panic(err)
}
// give length as -1 to indicate unknown
return bytes.NewBuffer(b), -1, nil
}
accountID := "01FS1X72SK9ZPW0J1QQ68BD264"
// process the media with no additional info provided
processingMedia, err := suite.manager.ProcessMedia(ctx, data, nil, accountID, nil)
suite.NoError(err)
// fetch the attachment id from the processing media
attachmentID := processingMedia.AttachmentID()
// do a blocking call to fetch the attachment
attachment, err := processingMedia.LoadAttachment(ctx)
suite.NoError(err)
suite.NotNil(attachment)
// make sure it's got the stuff set on it that we expect
// the attachment ID and accountID we expect
suite.Equal(attachmentID, attachment.ID)
suite.Equal(accountID, attachment.AccountID)
// file meta should be correctly derived from the image
suite.EqualValues(gtsmodel.Original{
Width: 1920, Height: 1080, Size: 2073600, Aspect: 1.7777777777777777,
}, attachment.FileMeta.Original)
suite.EqualValues(gtsmodel.Small{
Width: 512, Height: 288, Size: 147456, Aspect: 1.7777777777777777,
}, attachment.FileMeta.Small)
suite.Equal("image/jpeg", attachment.File.ContentType)
suite.Equal("image/jpeg", attachment.Thumbnail.ContentType)
suite.Equal(269739, attachment.File.FileSize)
suite.Equal("LiBzRk#6V[WF_NvzV@WY_3rqV@a$", attachment.Blurhash)
// now make sure the attachment is in the database
dbAttachment, err := suite.db.GetAttachmentByID(ctx, attachmentID)
suite.NoError(err)
suite.NotNil(dbAttachment)
// make sure the processed file is in storage
processedFullBytes, err := suite.storage.Get(ctx, attachment.File.Path)
suite.NoError(err)
suite.NotEmpty(processedFullBytes)
// load the processed bytes from our test folder, to compare
processedFullBytesExpected, err := os.ReadFile("./test/test-jpeg-processed.jpg")
suite.NoError(err)
suite.NotEmpty(processedFullBytesExpected)
// the bytes in storage should be what we expected
suite.Equal(processedFullBytesExpected, processedFullBytes)
// now do the same for the thumbnail and make sure it's what we expected
processedThumbnailBytes, err := suite.storage.Get(ctx, attachment.Thumbnail.Path)
suite.NoError(err)
suite.NotEmpty(processedThumbnailBytes)
processedThumbnailBytesExpected, err := os.ReadFile("./test/test-jpeg-thumbnail.jpg")
suite.NoError(err)
suite.NotEmpty(processedThumbnailBytesExpected)
suite.Equal(processedThumbnailBytesExpected, processedThumbnailBytes)
}
func (suite *ManagerTestSuite) TestSimpleJpegProcessBlockingReadCloser() {
ctx := context.Background()
data := func(_ context.Context) (io.Reader, int, error) {
// open test image as a file
f, err := os.Open("./test/test-jpeg.jpg")
if err != nil {
panic(err)
}
// give length as -1 to indicate unknown
return f, -1, nil
}
accountID := "01FS1X72SK9ZPW0J1QQ68BD264"
// process the media with no additional info provided
processingMedia, err := suite.manager.ProcessMedia(ctx, data, nil, accountID, nil)
suite.NoError(err)
// fetch the attachment id from the processing media
attachmentID := processingMedia.AttachmentID()
// do a blocking call to fetch the attachment
attachment, err := processingMedia.LoadAttachment(ctx)
suite.NoError(err)
suite.NotNil(attachment)
// make sure it's got the stuff set on it that we expect
// the attachment ID and accountID we expect
suite.Equal(attachmentID, attachment.ID)
suite.Equal(accountID, attachment.AccountID)
// file meta should be correctly derived from the image
suite.EqualValues(gtsmodel.Original{
Width: 1920, Height: 1080, Size: 2073600, Aspect: 1.7777777777777777,
}, attachment.FileMeta.Original)
suite.EqualValues(gtsmodel.Small{
Width: 512, Height: 288, Size: 147456, Aspect: 1.7777777777777777,
}, attachment.FileMeta.Small)
suite.Equal("image/jpeg", attachment.File.ContentType)
suite.Equal("image/jpeg", attachment.Thumbnail.ContentType)
suite.Equal(269739, attachment.File.FileSize)
suite.Equal("LiBzRk#6V[WF_NvzV@WY_3rqV@a$", attachment.Blurhash)
// now make sure the attachment is in the database
dbAttachment, err := suite.db.GetAttachmentByID(ctx, attachmentID)
suite.NoError(err)
suite.NotNil(dbAttachment)
// make sure the processed file is in storage
processedFullBytes, err := suite.storage.Get(ctx, attachment.File.Path)
suite.NoError(err)
suite.NotEmpty(processedFullBytes)
// load the processed bytes from our test folder, to compare
processedFullBytesExpected, err := os.ReadFile("./test/test-jpeg-processed.jpg")
suite.NoError(err)
suite.NotEmpty(processedFullBytesExpected)
// the bytes in storage should be what we expected
suite.Equal(processedFullBytesExpected, processedFullBytes)
// now do the same for the thumbnail and make sure it's what we expected
processedThumbnailBytes, err := suite.storage.Get(ctx, attachment.Thumbnail.Path)
suite.NoError(err)
suite.NotEmpty(processedThumbnailBytes)
processedThumbnailBytesExpected, err := os.ReadFile("./test/test-jpeg-thumbnail.jpg")
suite.NoError(err)
suite.NotEmpty(processedThumbnailBytesExpected)
suite.Equal(processedThumbnailBytesExpected, processedThumbnailBytes)
}
func (suite *ManagerTestSuite) TestPngNoAlphaChannelProcessBlocking() {
ctx := context.Background()

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@ -171,11 +171,6 @@ func (p *ProcessingEmoji) store(ctx context.Context) error {
return fmt.Errorf("store: error executing data function: %s", err)
}
maxSize := config.GetMediaEmojiRemoteMaxSize()
if fileSize > maxSize {
return fmt.Errorf("store: emoji size (%db) is larger than allowed emojiRemoteMaxSize (%db)", fileSize, maxSize)
}
// defer closing the reader when we're done with it
defer func() {
if rc, ok := reader.(io.ReadCloser); ok {
@ -211,16 +206,42 @@ func (p *ProcessingEmoji) store(ctx context.Context) error {
p.emoji.ImageURL = uris.GenerateURIForAttachment(p.instanceAccountID, string(TypeEmoji), string(SizeOriginal), p.emoji.ID, extension)
p.emoji.ImagePath = fmt.Sprintf("%s/%s/%s/%s.%s", p.instanceAccountID, TypeEmoji, SizeOriginal, p.emoji.ID, extension)
p.emoji.ImageContentType = contentType
p.emoji.ImageFileSize = fileSize
// concatenate the first bytes with the existing bytes still in the reader (thanks Mara)
multiReader := io.MultiReader(bytes.NewBuffer(firstBytes), reader)
readerToStore := io.MultiReader(bytes.NewBuffer(firstBytes), reader)
var maxEmojiSize int
if p.emoji.Domain == "" {
maxEmojiSize = config.GetMediaEmojiLocalMaxSize()
} else {
maxEmojiSize = config.GetMediaEmojiRemoteMaxSize()
}
// if we know the fileSize already, make sure it's not bigger than our limit
var checkedSize bool
if fileSize > 0 {
checkedSize = true
if fileSize > maxEmojiSize {
return fmt.Errorf("store: given emoji fileSize (%db) is larger than allowed size (%db)", fileSize, maxEmojiSize)
}
}
// store this for now -- other processes can pull it out of storage as they please
if err := p.storage.PutStream(ctx, p.emoji.ImagePath, multiReader); err != nil && err != storage.ErrAlreadyExists {
if fileSize, err = putStream(ctx, p.storage, p.emoji.ImagePath, readerToStore, fileSize); err != nil && err != storage.ErrAlreadyExists {
return fmt.Errorf("store: error storing stream: %s", err)
}
// if we didn't know the fileSize yet, we do now, so check if we need to
if !checkedSize && fileSize > maxEmojiSize {
defer func() {
if err := p.storage.Delete(ctx, p.emoji.ImagePath); err != nil {
log.Errorf("store: error removing too-large emoji from the store: %s", err)
}
}()
return fmt.Errorf("store: discovered emoji fileSize (%db) is larger than allowed emojiRemoteMaxSize (%db)", fileSize, maxEmojiSize)
}
p.emoji.ImageFileSize = fileSize
p.read = true
if p.postData != nil {

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@ -268,7 +268,6 @@ func (p *ProcessingMedia) store(ctx context.Context) error {
if err != nil {
return fmt.Errorf("store: error executing data function: %s", err)
}
log.Tracef("store: reading %d bytes from data function for media %s", fileSize, p.attachment.URL)
// defer closing the reader when we're done with it
defer func() {
@ -304,49 +303,48 @@ func (p *ProcessingMedia) store(ctx context.Context) error {
extension := split[1] // something like 'jpeg'
// concatenate the cleaned up first bytes with the existing bytes still in the reader (thanks Mara)
multiReader := io.MultiReader(bytes.NewBuffer(firstBytes), reader)
readerToStore := io.MultiReader(bytes.NewBuffer(firstBytes), reader)
// we'll need to clean exif data from the first bytes; while we're
// here, we can also use the extension to derive the attachment type
var clean io.Reader
// use the extension to derive the attachment type
// and, while we're in here, clean up exif data from
// the image if we already know the fileSize
switch extension {
case mimeGif:
p.attachment.Type = gtsmodel.FileTypeImage
clean = multiReader // nothing to clean from a gif
case mimeJpeg, mimePng:
p.attachment.Type = gtsmodel.FileTypeImage
purged, err := terminator.Terminate(multiReader, fileSize, extension)
if fileSize > 0 {
var err error
readerToStore, err = terminator.Terminate(readerToStore, fileSize, extension)
if err != nil {
return fmt.Errorf("store: exif error: %s", err)
}
clean = purged
defer func() {
if rc, ok := readerToStore.(io.ReadCloser); ok {
if err := rc.Close(); err != nil {
log.Errorf("store: error closing terminator reader: %s", err)
}
}
}()
}
default:
return fmt.Errorf("store: couldn't process %s", extension)
}
// defer closing the clean reader when we're done with it
defer func() {
if rc, ok := clean.(io.ReadCloser); ok {
if err := rc.Close(); err != nil {
log.Errorf("store: error closing clean readcloser: %s", err)
}
}
}()
// now set some additional fields on the attachment since
// we know more about what the underlying media actually is
p.attachment.URL = uris.GenerateURIForAttachment(p.attachment.AccountID, string(TypeAttachment), string(SizeOriginal), p.attachment.ID, extension)
p.attachment.File.Path = fmt.Sprintf("%s/%s/%s/%s.%s", p.attachment.AccountID, TypeAttachment, SizeOriginal, p.attachment.ID, extension)
p.attachment.File.ContentType = contentType
p.attachment.File.FileSize = fileSize
p.attachment.File.Path = fmt.Sprintf("%s/%s/%s/%s.%s", p.attachment.AccountID, TypeAttachment, SizeOriginal, p.attachment.ID, extension)
// store this for now -- other processes can pull it out of storage as they please
if err := p.storage.PutStream(ctx, p.attachment.File.Path, clean); err != nil && err != storage.ErrAlreadyExists {
if fileSize, err = putStream(ctx, p.storage, p.attachment.File.Path, readerToStore, fileSize); err != nil && err != storage.ErrAlreadyExists {
return fmt.Errorf("store: error storing stream: %s", err)
}
cached := true
p.attachment.Cached = &cached
p.attachment.File.FileSize = fileSize
p.read = true
if p.postData != nil {

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@ -19,12 +19,15 @@
package media
import (
"context"
"errors"
"fmt"
"io"
"time"
"github.com/h2non/filetype"
"github.com/superseriousbusiness/gotosocial/internal/log"
"github.com/superseriousbusiness/gotosocial/internal/storage"
)
// AllSupportedMIMETypes just returns all media
@ -144,3 +147,31 @@ func parseOlderThan(olderThanDays int) (time.Time, error) {
return olderThan, nil
}
// lengthReader wraps a reader and reads the length of total bytes written as it goes.
type lengthReader struct {
source io.Reader
length int
}
func (r *lengthReader) Read(b []byte) (int, error) {
n, err := r.source.Read(b)
r.length += n
return n, err
}
// putStream either puts a file with a known fileSize into storage directly, and returns the
// fileSize unchanged, or it wraps the reader with a lengthReader and returns the discovered
// fileSize.
func putStream(ctx context.Context, storage storage.Driver, key string, r io.Reader, fileSize int) (int, error) {
if fileSize > 0 {
return fileSize, storage.PutStream(ctx, key, r)
}
lr := &lengthReader{
source: r,
}
err := storage.PutStream(ctx, key, lr)
return lr.length, err
}