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Fixed rtcp rpsi parsing of invalid packets.

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Added packet type RpsiItem to destinguish parsed rpsi header and Rpsi body
  preventing handling two half-valid (header-only) rpsi packets as one valid,
  making test parser calculate rpsi packet once instead of twice.
Added check padding bits doesn't exceed native bit string length.
Marking rpsi received moved after it is validated.

BUG=600977

Review URL: https://codereview.webrtc.org/1880443002

Cr-Commit-Position: refs/heads/master@{#12318}
This commit is contained in:
danilchap
2016-04-11 10:05:02 -07:00
committed by Commit bot
parent f7704d197b
commit 90a1351072
6 changed files with 60 additions and 4 deletions
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10
webrtc/modules/rtp_rtcp/source/rtcp_utility.cc
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@ -1334,11 +1334,19 @@ bool RTCPUtility::RTCPParserV2::ParseRPSIItem() {
return false;
}
_packetType = RTCPPacketTypes::kPsfbRpsi;
uint8_t padding_bits = *_ptrRTCPData++;
_packet.RPSI.PayloadType = *_ptrRTCPData++;
if (padding_bits > static_cast<uint16_t>(length - 2) * 8) {
_state = ParseState::State_TopLevel;
EndCurrentBlock();
return false;
}
_packetType = RTCPPacketTypes::kPsfbRpsiItem;
memcpy(_packet.RPSI.NativeBitString, _ptrRTCPData, length - 2);
_ptrRTCPData += length - 2;