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0b0afaa81a
The SCTP RFCs aren't very strict in specifying when a chunk or parameter is invalid, so most chunks and/or parameters must be accepted but they may need some cleaning to avoid a lot of error handling deeper in the chunk handling code. Bug: webrtc:12614 Change-Id: I723f08cbdc26e1a1b78463b6137340e638089037 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/214966 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Victor Boivie <boivie@webrtc.org> Cr-Commit-Position: refs/heads/master@{#33788}
33 lines
1.3 KiB
C++
33 lines
1.3 KiB
C++
/*
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* Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef NET_DCSCTP_PACKET_CHUNK_VALIDATORS_H_
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#define NET_DCSCTP_PACKET_CHUNK_VALIDATORS_H_
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#include "net/dcsctp/packet/chunk/sack_chunk.h"
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namespace dcsctp {
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// Validates and cleans SCTP chunks.
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class ChunkValidators {
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public:
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// Given a SackChunk, will return `true` if it's valid, and `false` if not.
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static bool Validate(const SackChunk& sack);
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// Given a SackChunk, it will return a cleaned and validated variant of it.
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// RFC4960 doesn't say anything about validity of SACKs or if the Gap ACK
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// blocks must be sorted, and non-overlapping. While they always are in
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// well-behaving implementations, this can't be relied on.
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//
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// This method internally calls `Validate`, which means that you can always
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// pass a SackChunk to this method (valid or not), and use the results.
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static SackChunk Clean(SackChunk&& sack);
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};
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} // namespace dcsctp
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#endif // NET_DCSCTP_PACKET_CHUNK_VALIDATORS_H_
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