blob: a71ea785aba9a07b6ce2d95dff7853eab4504803 [file] [log] [blame]
// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "http2/decoder/payload_decoders/unknown_payload_decoder.h"
#include <stddef.h>
#include "http2/decoder/decode_buffer.h"
#include "http2/decoder/http2_frame_decoder_listener.h"
#include "http2/http2_constants.h"
#include "http2/http2_structures.h"
#include "http2/platform/api/http2_logging.h"
namespace http2 {
DecodeStatus UnknownPayloadDecoder::StartDecodingPayload(
FrameDecoderState* state,
DecodeBuffer* db) {
const Http2FrameHeader& frame_header = state->frame_header();
HTTP2_DVLOG(2) << "UnknownPayloadDecoder::StartDecodingPayload: "
<< frame_header;
QUICHE_DCHECK(!IsSupportedHttp2FrameType(frame_header.type)) << frame_header;
QUICHE_DCHECK_LE(db->Remaining(), frame_header.payload_length);
state->InitializeRemainders();
state->listener()->OnUnknownStart(frame_header);
return ResumeDecodingPayload(state, db);
}
DecodeStatus UnknownPayloadDecoder::ResumeDecodingPayload(
FrameDecoderState* state,
DecodeBuffer* db) {
HTTP2_DVLOG(2) << "UnknownPayloadDecoder::ResumeDecodingPayload "
<< "remaining_payload=" << state->remaining_payload()
<< "; db->Remaining=" << db->Remaining();
QUICHE_DCHECK(!IsSupportedHttp2FrameType(state->frame_header().type))
<< state->frame_header();
QUICHE_DCHECK_LE(state->remaining_payload(),
state->frame_header().payload_length);
QUICHE_DCHECK_LE(db->Remaining(), state->remaining_payload());
size_t avail = db->Remaining();
if (avail > 0) {
state->listener()->OnUnknownPayload(db->cursor(), avail);
db->AdvanceCursor(avail);
state->ConsumePayload(avail);
}
if (state->remaining_payload() == 0) {
state->listener()->OnUnknownEnd();
return DecodeStatus::kDecodeDone;
}
return DecodeStatus::kDecodeInProgress;
}
} // namespace http2