mirror of
https://github.com/klzgrad/naiveproxy.git
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110 lines
3.4 KiB
C++
110 lines
3.4 KiB
C++
// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "net/third_party/http2/decoder/decode_http2_structures.h"
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#include "base/logging.h"
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#include "net/third_party/http2/decoder/decode_buffer.h"
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#include "net/third_party/http2/http2_constants.h"
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namespace http2 {
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// Http2FrameHeader decoding:
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void DoDecode(Http2FrameHeader* out, DecodeBuffer* b) {
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DCHECK_NE(nullptr, out);
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DCHECK_NE(nullptr, b);
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DCHECK_LE(Http2FrameHeader::EncodedSize(), b->Remaining());
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out->payload_length = b->DecodeUInt24();
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out->type = static_cast<Http2FrameType>(b->DecodeUInt8());
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out->flags = static_cast<Http2FrameFlag>(b->DecodeUInt8());
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out->stream_id = b->DecodeUInt31();
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}
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// Http2PriorityFields decoding:
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void DoDecode(Http2PriorityFields* out, DecodeBuffer* b) {
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DCHECK_NE(nullptr, out);
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DCHECK_NE(nullptr, b);
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DCHECK_LE(Http2PriorityFields::EncodedSize(), b->Remaining());
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uint32_t stream_id_and_flag = b->DecodeUInt32();
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out->stream_dependency = stream_id_and_flag & StreamIdMask();
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if (out->stream_dependency == stream_id_and_flag) {
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out->is_exclusive = false;
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} else {
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out->is_exclusive = true;
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}
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// Note that chars are automatically promoted to ints during arithmetic,
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// so 255 + 1 doesn't end up as zero.
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out->weight = b->DecodeUInt8() + 1;
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}
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// Http2RstStreamFields decoding:
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void DoDecode(Http2RstStreamFields* out, DecodeBuffer* b) {
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DCHECK_NE(nullptr, out);
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DCHECK_NE(nullptr, b);
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DCHECK_LE(Http2RstStreamFields::EncodedSize(), b->Remaining());
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out->error_code = static_cast<Http2ErrorCode>(b->DecodeUInt32());
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}
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// Http2SettingFields decoding:
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void DoDecode(Http2SettingFields* out, DecodeBuffer* b) {
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DCHECK_NE(nullptr, out);
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DCHECK_NE(nullptr, b);
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DCHECK_LE(Http2SettingFields::EncodedSize(), b->Remaining());
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out->parameter = static_cast<Http2SettingsParameter>(b->DecodeUInt16());
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out->value = b->DecodeUInt32();
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}
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// Http2PushPromiseFields decoding:
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void DoDecode(Http2PushPromiseFields* out, DecodeBuffer* b) {
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DCHECK_NE(nullptr, out);
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DCHECK_NE(nullptr, b);
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DCHECK_LE(Http2PushPromiseFields::EncodedSize(), b->Remaining());
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out->promised_stream_id = b->DecodeUInt31();
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}
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// Http2PingFields decoding:
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void DoDecode(Http2PingFields* out, DecodeBuffer* b) {
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DCHECK_NE(nullptr, out);
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DCHECK_NE(nullptr, b);
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DCHECK_LE(Http2PingFields::EncodedSize(), b->Remaining());
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memcpy(out->opaque_bytes, b->cursor(), Http2PingFields::EncodedSize());
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b->AdvanceCursor(Http2PingFields::EncodedSize());
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}
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// Http2GoAwayFields decoding:
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void DoDecode(Http2GoAwayFields* out, DecodeBuffer* b) {
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DCHECK_NE(nullptr, out);
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DCHECK_NE(nullptr, b);
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DCHECK_LE(Http2GoAwayFields::EncodedSize(), b->Remaining());
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out->last_stream_id = b->DecodeUInt31();
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out->error_code = static_cast<Http2ErrorCode>(b->DecodeUInt32());
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}
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// Http2WindowUpdateFields decoding:
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void DoDecode(Http2WindowUpdateFields* out, DecodeBuffer* b) {
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DCHECK_NE(nullptr, out);
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DCHECK_NE(nullptr, b);
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DCHECK_LE(Http2WindowUpdateFields::EncodedSize(), b->Remaining());
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out->window_size_increment = b->DecodeUInt31();
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}
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// Http2AltSvcFields decoding:
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void DoDecode(Http2AltSvcFields* out, DecodeBuffer* b) {
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DCHECK_NE(nullptr, out);
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DCHECK_NE(nullptr, b);
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DCHECK_LE(Http2AltSvcFields::EncodedSize(), b->Remaining());
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out->origin_length = b->DecodeUInt16();
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}
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} // namespace http2
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