mirror of
https://github.com/jech/galene.git
synced 2024-11-08 17:55:59 +01:00
Handle empty VP8 headers.
Only the first byte of the VP8 header is mandatory, but we used to reject packets smaller than 4 bytes. The major part of the fix is actually in pion/rtp.
This commit is contained in:
parent
afcafb9f87
commit
06a0a2c36e
4 changed files with 64 additions and 13 deletions
|
@ -233,7 +233,7 @@ type Flags struct {
|
|||
Start bool
|
||||
End bool
|
||||
Keyframe bool
|
||||
Pid uint16 // only returned for VP8
|
||||
Pid uint16 // only returned for VP8
|
||||
Tid uint8
|
||||
Sid uint8
|
||||
TidUpSync bool
|
||||
|
@ -243,7 +243,7 @@ type Flags struct {
|
|||
}
|
||||
|
||||
func PacketFlags(codec string, buf []byte) (Flags, error) {
|
||||
if len(buf) < 12 {
|
||||
if len(buf) < 4 {
|
||||
return Flags{}, errTruncated
|
||||
}
|
||||
|
||||
|
@ -309,7 +309,7 @@ func RewritePacket(codec string, data []byte, setMarker bool, seqno uint16, delt
|
|||
return errTruncated
|
||||
}
|
||||
|
||||
if(setMarker) {
|
||||
if setMarker {
|
||||
data[1] |= 0x80
|
||||
}
|
||||
|
||||
|
@ -321,7 +321,7 @@ func RewritePacket(codec string, data []byte, setMarker bool, seqno uint16, delt
|
|||
|
||||
offset := 12
|
||||
offset += int(data[0]&0x0F) * 4
|
||||
if len(data) < offset+4 {
|
||||
if len(data) <= offset {
|
||||
return errTruncated
|
||||
}
|
||||
|
||||
|
@ -339,19 +339,30 @@ func RewritePacket(codec string, data []byte, setMarker bool, seqno uint16, delt
|
|||
if !x {
|
||||
return nil
|
||||
}
|
||||
i := (data[offset+1] & 0x80) != 0
|
||||
offset++
|
||||
if len(data) <= offset {
|
||||
return errTruncated
|
||||
}
|
||||
i := (data[offset] & 0x80) != 0
|
||||
if !i {
|
||||
return nil
|
||||
}
|
||||
m := (data[offset+2] & 0x80) != 0
|
||||
offset++
|
||||
if len(data) <= offset {
|
||||
return errTruncated
|
||||
}
|
||||
m := (data[offset] & 0x80) != 0
|
||||
if m {
|
||||
pid := (uint16(data[offset+2]&0x7F) << 8) |
|
||||
uint16(data[offset+3])
|
||||
if len(data) <= offset+1 {
|
||||
return errTruncated
|
||||
}
|
||||
pid := (uint16(data[offset]&0x7F) << 8) |
|
||||
uint16(data[offset+1])
|
||||
pid = (pid + delta) & 0x7FFF
|
||||
data[offset+2] = 0x80 | byte((pid>>8)&0x7F)
|
||||
data[offset+3] = byte(pid & 0xFF)
|
||||
data[offset] = 0x80 | byte((pid>>8)&0x7F)
|
||||
data[offset+1] = byte(pid & 0xFF)
|
||||
} else {
|
||||
data[offset+2] = (data[offset+2] + uint8(delta)) & 0x7F
|
||||
data[offset] = (data[offset] + uint8(delta)) & 0x7F
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
|
|
@ -138,6 +138,14 @@ var vp8 = []byte{
|
|||
0, 0, 0, 0,
|
||||
}
|
||||
|
||||
var emptyVP8 = []byte{
|
||||
0x80, 0, 0, 42,
|
||||
0, 0, 0, 0,
|
||||
0, 0, 0, 0,
|
||||
|
||||
0x00,
|
||||
}
|
||||
|
||||
func TestPacketFlagsVP8(t *testing.T) {
|
||||
buf := append([]byte{}, vp8...)
|
||||
flags, err := PacketFlags("video/vp8", buf)
|
||||
|
@ -151,6 +159,19 @@ func TestPacketFlagsVP8(t *testing.T) {
|
|||
}
|
||||
}
|
||||
|
||||
func TestEmptyPacketFlagsVP8(t *testing.T) {
|
||||
buf := append([]byte{}, emptyVP8...)
|
||||
flags, err := PacketFlags("video/vp8", buf)
|
||||
if flags.Seqno != 42 || flags.Start ||
|
||||
flags.Sid != 0 || flags.Tid != 0 ||
|
||||
flags.TidUpSync || flags.Discardable || err != nil {
|
||||
t.Errorf("Got %v, %v, %v, %v, %v, %v (%v)",
|
||||
flags.Seqno, flags.Start, flags.Pid, flags.Sid,
|
||||
flags.TidUpSync, flags.Discardable, err,
|
||||
)
|
||||
}
|
||||
}
|
||||
|
||||
func TestRewriteVP8(t *testing.T) {
|
||||
for i := uint16(0); i < 0x7fff; i++ {
|
||||
buf := append([]byte{}, vp8...)
|
||||
|
@ -169,6 +190,24 @@ func TestRewriteVP8(t *testing.T) {
|
|||
}
|
||||
}
|
||||
|
||||
func TestRewriteEmptyVP8(t *testing.T) {
|
||||
for i := uint16(0); i < 0x7fff; i++ {
|
||||
buf := append([]byte{}, emptyVP8...)
|
||||
err := RewritePacket("video/vp8", buf, true, i, i)
|
||||
if err != nil {
|
||||
t.Errorf("rewrite: %v", err)
|
||||
continue
|
||||
}
|
||||
flags, err := PacketFlags("video/vp8", buf)
|
||||
if err != nil || flags.Seqno != i ||
|
||||
!flags.Marker {
|
||||
t.Errorf("Expected %v %v, got %v %v (%v)",
|
||||
i, (57+i)&0x7FFF,
|
||||
flags.Seqno, flags.Pid, err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
var vp9 = []byte{
|
||||
0x80, 0, 0, 42,
|
||||
0, 0, 0, 0,
|
||||
|
|
2
go.mod
2
go.mod
|
@ -11,7 +11,7 @@ require (
|
|||
github.com/pion/ice/v2 v2.2.13
|
||||
github.com/pion/interceptor v0.1.12 // indirect
|
||||
github.com/pion/rtcp v1.2.10
|
||||
github.com/pion/rtp v1.7.13
|
||||
github.com/pion/rtp v1.7.14-0.20230109165057-d62c6716b99a
|
||||
github.com/pion/sdp/v3 v3.0.6
|
||||
github.com/pion/srtp/v2 v2.0.11 // indirect
|
||||
github.com/pion/turn/v2 v2.0.9
|
||||
|
|
3
go.sum
3
go.sum
|
@ -72,8 +72,9 @@ github.com/pion/rtcp v1.2.10 h1:nkr3uj+8Sp97zyItdN60tE/S6vk4al5CPRR6Gejsdjc=
|
|||
github.com/pion/rtcp v1.2.10/go.mod h1:ztfEwXZNLGyF1oQDttz/ZKIBaeeg/oWbRYqzBM9TL1I=
|
||||
github.com/pion/rtp v1.7.0/go.mod h1:bDb5n+BFZxXx0Ea7E5qe+klMuqiBrP+w8XSjiWtCUko=
|
||||
github.com/pion/rtp v1.7.2/go.mod h1:bDb5n+BFZxXx0Ea7E5qe+klMuqiBrP+w8XSjiWtCUko=
|
||||
github.com/pion/rtp v1.7.13 h1:qcHwlmtiI50t1XivvoawdCGTP4Uiypzfrsap+bijcoA=
|
||||
github.com/pion/rtp v1.7.13/go.mod h1:bDb5n+BFZxXx0Ea7E5qe+klMuqiBrP+w8XSjiWtCUko=
|
||||
github.com/pion/rtp v1.7.14-0.20230109165057-d62c6716b99a h1:2dsmWw+LyKy+4pgeXJeTyErucwsAP9QnrC0eao2UP2Q=
|
||||
github.com/pion/rtp v1.7.14-0.20230109165057-d62c6716b99a/go.mod h1:bDb5n+BFZxXx0Ea7E5qe+klMuqiBrP+w8XSjiWtCUko=
|
||||
github.com/pion/sctp v1.7.10/go.mod h1:EhpTUQu1/lcK3xI+eriS6/96fWetHGCvBi9MSsnaBN0=
|
||||
github.com/pion/sctp v1.7.12/go.mod h1:xFe9cLMZ5Vj6eOzpyiKjT9SwGM4KpK/8Jbw5//jc+0s=
|
||||
github.com/pion/sctp v1.8.5 h1:JCc25nghnXWOlSn3OVtEnA9PjQ2JsxQbG+CXZ1UkJKQ=
|
||||
|
|
Loading…
Reference in a new issue