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author | OpenShift Merge Robot <openshift-merge-robot@users.noreply.github.com> | 2021-02-25 19:00:14 +0100 |
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committer | GitHub <noreply@github.com> | 2021-02-25 19:00:14 +0100 |
commit | b220d6cd06360d6b868cd7fb7c32d2602aab69a5 (patch) | |
tree | 6777cc2c23306d1a6b87ef40b9fe4eab2764b7dd /vendor/github.com/docker/spdystream/spdy/read.go | |
parent | 9ec8106841c55bc085012727748e2d73826be97d (diff) | |
parent | 24d9bda7ff8a3e6a9f249401e05e35e73284ae61 (diff) | |
download | podman-b220d6cd06360d6b868cd7fb7c32d2602aab69a5.tar.gz podman-b220d6cd06360d6b868cd7fb7c32d2602aab69a5.tar.bz2 podman-b220d6cd06360d6b868cd7fb7c32d2602aab69a5.zip |
Merge pull request #9518 from baude/pruneremotecommand
prune remotecommand dependency
Diffstat (limited to 'vendor/github.com/docker/spdystream/spdy/read.go')
-rw-r--r-- | vendor/github.com/docker/spdystream/spdy/read.go | 348 |
1 files changed, 0 insertions, 348 deletions
diff --git a/vendor/github.com/docker/spdystream/spdy/read.go b/vendor/github.com/docker/spdystream/spdy/read.go deleted file mode 100644 index 9359a9501..000000000 --- a/vendor/github.com/docker/spdystream/spdy/read.go +++ /dev/null @@ -1,348 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package spdy - -import ( - "compress/zlib" - "encoding/binary" - "io" - "net/http" - "strings" -) - -func (frame *SynStreamFrame) read(h ControlFrameHeader, f *Framer) error { - return f.readSynStreamFrame(h, frame) -} - -func (frame *SynReplyFrame) read(h ControlFrameHeader, f *Framer) error { - return f.readSynReplyFrame(h, frame) -} - -func (frame *RstStreamFrame) read(h ControlFrameHeader, f *Framer) error { - frame.CFHeader = h - if err := binary.Read(f.r, binary.BigEndian, &frame.StreamId); err != nil { - return err - } - if err := binary.Read(f.r, binary.BigEndian, &frame.Status); err != nil { - return err - } - if frame.Status == 0 { - return &Error{InvalidControlFrame, frame.StreamId} - } - if frame.StreamId == 0 { - return &Error{ZeroStreamId, 0} - } - return nil -} - -func (frame *SettingsFrame) read(h ControlFrameHeader, f *Framer) error { - frame.CFHeader = h - var numSettings uint32 - if err := binary.Read(f.r, binary.BigEndian, &numSettings); err != nil { - return err - } - frame.FlagIdValues = make([]SettingsFlagIdValue, numSettings) - for i := uint32(0); i < numSettings; i++ { - if err := binary.Read(f.r, binary.BigEndian, &frame.FlagIdValues[i].Id); err != nil { - return err - } - frame.FlagIdValues[i].Flag = SettingsFlag((frame.FlagIdValues[i].Id & 0xff000000) >> 24) - frame.FlagIdValues[i].Id &= 0xffffff - if err := binary.Read(f.r, binary.BigEndian, &frame.FlagIdValues[i].Value); err != nil { - return err - } - } - return nil -} - -func (frame *PingFrame) read(h ControlFrameHeader, f *Framer) error { - frame.CFHeader = h - if err := binary.Read(f.r, binary.BigEndian, &frame.Id); err != nil { - return err - } - if frame.Id == 0 { - return &Error{ZeroStreamId, 0} - } - if frame.CFHeader.Flags != 0 { - return &Error{InvalidControlFrame, StreamId(frame.Id)} - } - return nil -} - -func (frame *GoAwayFrame) read(h ControlFrameHeader, f *Framer) error { - frame.CFHeader = h - if err := binary.Read(f.r, binary.BigEndian, &frame.LastGoodStreamId); err != nil { - return err - } - if frame.CFHeader.Flags != 0 { - return &Error{InvalidControlFrame, frame.LastGoodStreamId} - } - if frame.CFHeader.length != 8 { - return &Error{InvalidControlFrame, frame.LastGoodStreamId} - } - if err := binary.Read(f.r, binary.BigEndian, &frame.Status); err != nil { - return err - } - return nil -} - -func (frame *HeadersFrame) read(h ControlFrameHeader, f *Framer) error { - return f.readHeadersFrame(h, frame) -} - -func (frame *WindowUpdateFrame) read(h ControlFrameHeader, f *Framer) error { - frame.CFHeader = h - if err := binary.Read(f.r, binary.BigEndian, &frame.StreamId); err != nil { - return err - } - if frame.CFHeader.Flags != 0 { - return &Error{InvalidControlFrame, frame.StreamId} - } - if frame.CFHeader.length != 8 { - return &Error{InvalidControlFrame, frame.StreamId} - } - if err := binary.Read(f.r, binary.BigEndian, &frame.DeltaWindowSize); err != nil { - return err - } - return nil -} - -func newControlFrame(frameType ControlFrameType) (controlFrame, error) { - ctor, ok := cframeCtor[frameType] - if !ok { - return nil, &Error{Err: InvalidControlFrame} - } - return ctor(), nil -} - -var cframeCtor = map[ControlFrameType]func() controlFrame{ - TypeSynStream: func() controlFrame { return new(SynStreamFrame) }, - TypeSynReply: func() controlFrame { return new(SynReplyFrame) }, - TypeRstStream: func() controlFrame { return new(RstStreamFrame) }, - TypeSettings: func() controlFrame { return new(SettingsFrame) }, - TypePing: func() controlFrame { return new(PingFrame) }, - TypeGoAway: func() controlFrame { return new(GoAwayFrame) }, - TypeHeaders: func() controlFrame { return new(HeadersFrame) }, - TypeWindowUpdate: func() controlFrame { return new(WindowUpdateFrame) }, -} - -func (f *Framer) uncorkHeaderDecompressor(payloadSize int64) error { - if f.headerDecompressor != nil { - f.headerReader.N = payloadSize - return nil - } - f.headerReader = io.LimitedReader{R: f.r, N: payloadSize} - decompressor, err := zlib.NewReaderDict(&f.headerReader, []byte(headerDictionary)) - if err != nil { - return err - } - f.headerDecompressor = decompressor - return nil -} - -// ReadFrame reads SPDY encoded data and returns a decompressed Frame. -func (f *Framer) ReadFrame() (Frame, error) { - var firstWord uint32 - if err := binary.Read(f.r, binary.BigEndian, &firstWord); err != nil { - return nil, err - } - if firstWord&0x80000000 != 0 { - frameType := ControlFrameType(firstWord & 0xffff) - version := uint16(firstWord >> 16 & 0x7fff) - return f.parseControlFrame(version, frameType) - } - return f.parseDataFrame(StreamId(firstWord & 0x7fffffff)) -} - -func (f *Framer) parseControlFrame(version uint16, frameType ControlFrameType) (Frame, error) { - var length uint32 - if err := binary.Read(f.r, binary.BigEndian, &length); err != nil { - return nil, err - } - flags := ControlFlags((length & 0xff000000) >> 24) - length &= 0xffffff - header := ControlFrameHeader{version, frameType, flags, length} - cframe, err := newControlFrame(frameType) - if err != nil { - return nil, err - } - if err = cframe.read(header, f); err != nil { - return nil, err - } - return cframe, nil -} - -func parseHeaderValueBlock(r io.Reader, streamId StreamId) (http.Header, error) { - var numHeaders uint32 - if err := binary.Read(r, binary.BigEndian, &numHeaders); err != nil { - return nil, err - } - var e error - h := make(http.Header, int(numHeaders)) - for i := 0; i < int(numHeaders); i++ { - var length uint32 - if err := binary.Read(r, binary.BigEndian, &length); err != nil { - return nil, err - } - nameBytes := make([]byte, length) - if _, err := io.ReadFull(r, nameBytes); err != nil { - return nil, err - } - name := string(nameBytes) - if name != strings.ToLower(name) { - e = &Error{UnlowercasedHeaderName, streamId} - name = strings.ToLower(name) - } - if h[name] != nil { - e = &Error{DuplicateHeaders, streamId} - } - if err := binary.Read(r, binary.BigEndian, &length); err != nil { - return nil, err - } - value := make([]byte, length) - if _, err := io.ReadFull(r, value); err != nil { - return nil, err - } - valueList := strings.Split(string(value), headerValueSeparator) - for _, v := range valueList { - h.Add(name, v) - } - } - if e != nil { - return h, e - } - return h, nil -} - -func (f *Framer) readSynStreamFrame(h ControlFrameHeader, frame *SynStreamFrame) error { - frame.CFHeader = h - var err error - if err = binary.Read(f.r, binary.BigEndian, &frame.StreamId); err != nil { - return err - } - if err = binary.Read(f.r, binary.BigEndian, &frame.AssociatedToStreamId); err != nil { - return err - } - if err = binary.Read(f.r, binary.BigEndian, &frame.Priority); err != nil { - return err - } - frame.Priority >>= 5 - if err = binary.Read(f.r, binary.BigEndian, &frame.Slot); err != nil { - return err - } - reader := f.r - if !f.headerCompressionDisabled { - err := f.uncorkHeaderDecompressor(int64(h.length - 10)) - if err != nil { - return err - } - reader = f.headerDecompressor - } - frame.Headers, err = parseHeaderValueBlock(reader, frame.StreamId) - if !f.headerCompressionDisabled && (err == io.EOF && f.headerReader.N == 0 || f.headerReader.N != 0) { - err = &Error{WrongCompressedPayloadSize, 0} - } - if err != nil { - return err - } - for h := range frame.Headers { - if invalidReqHeaders[h] { - return &Error{InvalidHeaderPresent, frame.StreamId} - } - } - if frame.StreamId == 0 { - return &Error{ZeroStreamId, 0} - } - return nil -} - -func (f *Framer) readSynReplyFrame(h ControlFrameHeader, frame *SynReplyFrame) error { - frame.CFHeader = h - var err error - if err = binary.Read(f.r, binary.BigEndian, &frame.StreamId); err != nil { - return err - } - reader := f.r - if !f.headerCompressionDisabled { - err := f.uncorkHeaderDecompressor(int64(h.length - 4)) - if err != nil { - return err - } - reader = f.headerDecompressor - } - frame.Headers, err = parseHeaderValueBlock(reader, frame.StreamId) - if !f.headerCompressionDisabled && (err == io.EOF && f.headerReader.N == 0 || f.headerReader.N != 0) { - err = &Error{WrongCompressedPayloadSize, 0} - } - if err != nil { - return err - } - for h := range frame.Headers { - if invalidRespHeaders[h] { - return &Error{InvalidHeaderPresent, frame.StreamId} - } - } - if frame.StreamId == 0 { - return &Error{ZeroStreamId, 0} - } - return nil -} - -func (f *Framer) readHeadersFrame(h ControlFrameHeader, frame *HeadersFrame) error { - frame.CFHeader = h - var err error - if err = binary.Read(f.r, binary.BigEndian, &frame.StreamId); err != nil { - return err - } - reader := f.r - if !f.headerCompressionDisabled { - err := f.uncorkHeaderDecompressor(int64(h.length - 4)) - if err != nil { - return err - } - reader = f.headerDecompressor - } - frame.Headers, err = parseHeaderValueBlock(reader, frame.StreamId) - if !f.headerCompressionDisabled && (err == io.EOF && f.headerReader.N == 0 || f.headerReader.N != 0) { - err = &Error{WrongCompressedPayloadSize, 0} - } - if err != nil { - return err - } - var invalidHeaders map[string]bool - if frame.StreamId%2 == 0 { - invalidHeaders = invalidReqHeaders - } else { - invalidHeaders = invalidRespHeaders - } - for h := range frame.Headers { - if invalidHeaders[h] { - return &Error{InvalidHeaderPresent, frame.StreamId} - } - } - if frame.StreamId == 0 { - return &Error{ZeroStreamId, 0} - } - return nil -} - -func (f *Framer) parseDataFrame(streamId StreamId) (*DataFrame, error) { - var length uint32 - if err := binary.Read(f.r, binary.BigEndian, &length); err != nil { - return nil, err - } - var frame DataFrame - frame.StreamId = streamId - frame.Flags = DataFlags(length >> 24) - length &= 0xffffff - frame.Data = make([]byte, length) - if _, err := io.ReadFull(f.r, frame.Data); err != nil { - return nil, err - } - if frame.StreamId == 0 { - return nil, &Error{ZeroStreamId, 0} - } - return &frame, nil -} |