mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-12-05 14:40:42 +01:00
fe3e9ede52
Bumps [github.com/minio/minio-go/v7](https://github.com/minio/minio-go) from 7.0.44 to 7.0.47. - [Release notes](https://github.com/minio/minio-go/releases) - [Commits](https://github.com/minio/minio-go/compare/v7.0.44...v7.0.47) --- updated-dependencies: - dependency-name: github.com/minio/minio-go/v7 dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
225 lines
6.6 KiB
Go
225 lines
6.6 KiB
Go
/*
|
|
* MinIO Go Library for Amazon S3 Compatible Cloud Storage
|
|
* Copyright 2022 MinIO, Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package signer
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"io"
|
|
"net/http"
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
)
|
|
|
|
// getUnsignedChunkLength - calculates the length of chunk metadata
|
|
func getUnsignedChunkLength(chunkDataSize int64) int64 {
|
|
return int64(len(fmt.Sprintf("%x", chunkDataSize))) +
|
|
crlfLen +
|
|
chunkDataSize +
|
|
crlfLen
|
|
}
|
|
|
|
// getUSStreamLength - calculates the length of the overall stream (data + metadata)
|
|
func getUSStreamLength(dataLen, chunkSize int64, trailers http.Header) int64 {
|
|
if dataLen <= 0 {
|
|
return 0
|
|
}
|
|
|
|
chunksCount := int64(dataLen / chunkSize)
|
|
remainingBytes := int64(dataLen % chunkSize)
|
|
streamLen := int64(0)
|
|
streamLen += chunksCount * getUnsignedChunkLength(chunkSize)
|
|
if remainingBytes > 0 {
|
|
streamLen += getUnsignedChunkLength(remainingBytes)
|
|
}
|
|
streamLen += getUnsignedChunkLength(0)
|
|
if len(trailers) > 0 {
|
|
for name, placeholder := range trailers {
|
|
if len(placeholder) > 0 {
|
|
streamLen += int64(len(name) + len(trailerKVSeparator) + len(placeholder[0]) + 1)
|
|
}
|
|
}
|
|
streamLen += crlfLen
|
|
}
|
|
|
|
return streamLen
|
|
}
|
|
|
|
// prepareStreamingRequest - prepares a request with appropriate
|
|
// headers before computing the seed signature.
|
|
func prepareUSStreamingRequest(req *http.Request, sessionToken string, dataLen int64, timestamp time.Time) {
|
|
req.TransferEncoding = []string{"aws-chunked"}
|
|
if sessionToken != "" {
|
|
req.Header.Set("X-Amz-Security-Token", sessionToken)
|
|
}
|
|
|
|
req.Header.Set("X-Amz-Date", timestamp.Format(iso8601DateFormat))
|
|
// Set content length with streaming signature for each chunk included.
|
|
req.ContentLength = getUSStreamLength(dataLen, int64(payloadChunkSize), req.Trailer)
|
|
}
|
|
|
|
// StreamingUSReader implements chunked upload signature as a reader on
|
|
// top of req.Body's ReaderCloser chunk header;data;... repeat
|
|
type StreamingUSReader struct {
|
|
contentLen int64 // Content-Length from req header
|
|
baseReadCloser io.ReadCloser // underlying io.Reader
|
|
bytesRead int64 // bytes read from underlying io.Reader
|
|
buf bytes.Buffer // holds signed chunk
|
|
chunkBuf []byte // holds raw data read from req Body
|
|
chunkBufLen int // no. of bytes read so far into chunkBuf
|
|
done bool // done reading the underlying reader to EOF
|
|
chunkNum int
|
|
totalChunks int
|
|
lastChunkSize int
|
|
trailer http.Header
|
|
}
|
|
|
|
// writeChunk - signs a chunk read from s.baseReader of chunkLen size.
|
|
func (s *StreamingUSReader) writeChunk(chunkLen int, addCrLf bool) {
|
|
s.buf.WriteString(strconv.FormatInt(int64(chunkLen), 16) + "\r\n")
|
|
|
|
// Write chunk data into streaming buffer
|
|
s.buf.Write(s.chunkBuf[:chunkLen])
|
|
|
|
// Write the chunk trailer.
|
|
if addCrLf {
|
|
s.buf.Write([]byte("\r\n"))
|
|
}
|
|
|
|
// Reset chunkBufLen for next chunk read.
|
|
s.chunkBufLen = 0
|
|
s.chunkNum++
|
|
}
|
|
|
|
// addSignedTrailer - adds a trailer with the provided headers,
|
|
// then signs a chunk and adds it to output.
|
|
func (s *StreamingUSReader) addTrailer(h http.Header) {
|
|
olen := len(s.chunkBuf)
|
|
s.chunkBuf = s.chunkBuf[:0]
|
|
for k, v := range h {
|
|
s.chunkBuf = append(s.chunkBuf, []byte(strings.ToLower(k)+trailerKVSeparator+v[0]+"\n")...)
|
|
}
|
|
|
|
s.buf.Write(s.chunkBuf)
|
|
s.buf.WriteString("\r\n\r\n")
|
|
|
|
// Reset chunkBufLen for next chunk read.
|
|
s.chunkBuf = s.chunkBuf[:olen]
|
|
s.chunkBufLen = 0
|
|
s.chunkNum++
|
|
}
|
|
|
|
// StreamingUnsignedV4 - provides chunked upload
|
|
func StreamingUnsignedV4(req *http.Request, sessionToken string, dataLen int64, reqTime time.Time) *http.Request {
|
|
// Set headers needed for streaming signature.
|
|
prepareUSStreamingRequest(req, sessionToken, dataLen, reqTime)
|
|
|
|
if req.Body == nil {
|
|
req.Body = io.NopCloser(bytes.NewReader([]byte("")))
|
|
}
|
|
|
|
stReader := &StreamingUSReader{
|
|
baseReadCloser: req.Body,
|
|
chunkBuf: make([]byte, payloadChunkSize),
|
|
contentLen: dataLen,
|
|
chunkNum: 1,
|
|
totalChunks: int((dataLen+payloadChunkSize-1)/payloadChunkSize) + 1,
|
|
lastChunkSize: int(dataLen % payloadChunkSize),
|
|
}
|
|
if len(req.Trailer) > 0 {
|
|
stReader.trailer = req.Trailer
|
|
// Remove...
|
|
req.Trailer = nil
|
|
}
|
|
|
|
req.Body = stReader
|
|
|
|
return req
|
|
}
|
|
|
|
// Read - this method performs chunk upload signature providing a
|
|
// io.Reader interface.
|
|
func (s *StreamingUSReader) Read(buf []byte) (int, error) {
|
|
switch {
|
|
// After the last chunk is read from underlying reader, we
|
|
// never re-fill s.buf.
|
|
case s.done:
|
|
|
|
// s.buf will be (re-)filled with next chunk when has lesser
|
|
// bytes than asked for.
|
|
case s.buf.Len() < len(buf):
|
|
s.chunkBufLen = 0
|
|
for {
|
|
n1, err := s.baseReadCloser.Read(s.chunkBuf[s.chunkBufLen:])
|
|
// Usually we validate `err` first, but in this case
|
|
// we are validating n > 0 for the following reasons.
|
|
//
|
|
// 1. n > 0, err is one of io.EOF, nil (near end of stream)
|
|
// A Reader returning a non-zero number of bytes at the end
|
|
// of the input stream may return either err == EOF or err == nil
|
|
//
|
|
// 2. n == 0, err is io.EOF (actual end of stream)
|
|
//
|
|
// Callers should always process the n > 0 bytes returned
|
|
// before considering the error err.
|
|
if n1 > 0 {
|
|
s.chunkBufLen += n1
|
|
s.bytesRead += int64(n1)
|
|
|
|
if s.chunkBufLen == payloadChunkSize ||
|
|
(s.chunkNum == s.totalChunks-1 &&
|
|
s.chunkBufLen == s.lastChunkSize) {
|
|
// Sign the chunk and write it to s.buf.
|
|
s.writeChunk(s.chunkBufLen, true)
|
|
break
|
|
}
|
|
}
|
|
if err != nil {
|
|
if err == io.EOF {
|
|
// No more data left in baseReader - last chunk.
|
|
// Done reading the last chunk from baseReader.
|
|
s.done = true
|
|
|
|
// bytes read from baseReader different than
|
|
// content length provided.
|
|
if s.bytesRead != s.contentLen {
|
|
return 0, fmt.Errorf("http: ContentLength=%d with Body length %d", s.contentLen, s.bytesRead)
|
|
}
|
|
|
|
// Sign the chunk and write it to s.buf.
|
|
s.writeChunk(0, len(s.trailer) == 0)
|
|
if len(s.trailer) > 0 {
|
|
// Trailer must be set now.
|
|
s.addTrailer(s.trailer)
|
|
}
|
|
break
|
|
}
|
|
return 0, err
|
|
}
|
|
|
|
}
|
|
}
|
|
return s.buf.Read(buf)
|
|
}
|
|
|
|
// Close - this method makes underlying io.ReadCloser's Close method available.
|
|
func (s *StreamingUSReader) Close() error {
|
|
return s.baseReadCloser.Close()
|
|
}
|