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| 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "net/spdy/spdy_buffer.h" | 5 #include "net/spdy/spdy_buffer.h" |
| 6 | 6 |
| 7 #include <cstring> | 7 #include <cstring> |
| 8 #include <utility> |
| 8 | 9 |
| 9 #include "base/callback.h" | 10 #include "base/callback.h" |
| 10 #include "base/logging.h" | 11 #include "base/logging.h" |
| 11 #include "base/macros.h" | 12 #include "base/macros.h" |
| 12 #include "net/base/io_buffer.h" | 13 #include "net/base/io_buffer.h" |
| 13 #include "net/spdy/spdy_protocol.h" | 14 #include "net/spdy/spdy_protocol.h" |
| 14 | 15 |
| 15 namespace net { | 16 namespace net { |
| 16 | 17 |
| 17 namespace { | 18 namespace { |
| 18 | 19 |
| 19 // Bound on largest frame any SPDY version has allowed. | 20 // Bound on largest frame any SPDY version has allowed. |
| 20 const size_t kMaxSpdyFrameSize = 0x00ffffff; | 21 const size_t kMaxSpdyFrameSize = 0x00ffffff; |
| 21 | 22 |
| 22 // Makes a SpdyFrame with |size| bytes of data copied from | 23 // Makes a SpdyFrame with |size| bytes of data copied from |
| 23 // |data|. |data| must be non-NULL and |size| must be positive. | 24 // |data|. |data| must be non-NULL and |size| must be positive. |
| 24 scoped_ptr<SpdyFrame> MakeSpdyFrame(const char* data, size_t size) { | 25 scoped_ptr<SpdyFrame> MakeSpdyFrame(const char* data, size_t size) { |
| 25 DCHECK(data); | 26 DCHECK(data); |
| 26 CHECK_GT(size, 0u); | 27 CHECK_GT(size, 0u); |
| 27 CHECK_LE(size, kMaxSpdyFrameSize); | 28 CHECK_LE(size, kMaxSpdyFrameSize); |
| 28 scoped_ptr<char[]> frame_data(new char[size]); | 29 scoped_ptr<char[]> frame_data(new char[size]); |
| 29 std::memcpy(frame_data.get(), data, size); | 30 std::memcpy(frame_data.get(), data, size); |
| 30 scoped_ptr<SpdyFrame> frame( | 31 scoped_ptr<SpdyFrame> frame( |
| 31 new SpdyFrame(frame_data.release(), size, true /* owns_buffer */)); | 32 new SpdyFrame(frame_data.release(), size, true /* owns_buffer */)); |
| 32 return frame.Pass(); | 33 return frame; |
| 33 } | 34 } |
| 34 | 35 |
| 35 } // namespace | 36 } // namespace |
| 36 | 37 |
| 37 // This class is an IOBuffer implementation that simply holds a | 38 // This class is an IOBuffer implementation that simply holds a |
| 38 // reference to a SharedFrame object and a fixed offset. Used by | 39 // reference to a SharedFrame object and a fixed offset. Used by |
| 39 // SpdyBuffer::GetIOBufferForRemainingData(). | 40 // SpdyBuffer::GetIOBufferForRemainingData(). |
| 40 class SpdyBuffer::SharedFrameIOBuffer : public IOBuffer { | 41 class SpdyBuffer::SharedFrameIOBuffer : public IOBuffer { |
| 41 public: | 42 public: |
| 42 SharedFrameIOBuffer(const scoped_refptr<SharedFrame>& shared_frame, | 43 SharedFrameIOBuffer(const scoped_refptr<SharedFrame>& shared_frame, |
| 43 size_t offset) | 44 size_t offset) |
| 44 : IOBuffer(shared_frame->data->data() + offset), | 45 : IOBuffer(shared_frame->data->data() + offset), |
| 45 shared_frame_(shared_frame) {} | 46 shared_frame_(shared_frame) {} |
| 46 | 47 |
| 47 private: | 48 private: |
| 48 ~SharedFrameIOBuffer() override { | 49 ~SharedFrameIOBuffer() override { |
| 49 // Prevent ~IOBuffer() from trying to delete |data_|. | 50 // Prevent ~IOBuffer() from trying to delete |data_|. |
| 50 data_ = NULL; | 51 data_ = NULL; |
| 51 } | 52 } |
| 52 | 53 |
| 53 const scoped_refptr<SharedFrame> shared_frame_; | 54 const scoped_refptr<SharedFrame> shared_frame_; |
| 54 | 55 |
| 55 DISALLOW_COPY_AND_ASSIGN(SharedFrameIOBuffer); | 56 DISALLOW_COPY_AND_ASSIGN(SharedFrameIOBuffer); |
| 56 }; | 57 }; |
| 57 | 58 |
| 58 SpdyBuffer::SpdyBuffer(scoped_ptr<SpdyFrame> frame) | 59 SpdyBuffer::SpdyBuffer(scoped_ptr<SpdyFrame> frame) |
| 59 : shared_frame_(new SharedFrame()), | 60 : shared_frame_(new SharedFrame()), |
| 60 offset_(0) { | 61 offset_(0) { |
| 61 shared_frame_->data = frame.Pass(); | 62 shared_frame_->data = std::move(frame); |
| 62 } | 63 } |
| 63 | 64 |
| 64 // The given data may not be strictly a SPDY frame; we (ab)use | 65 // The given data may not be strictly a SPDY frame; we (ab)use |
| 65 // |frame_| just as a container. | 66 // |frame_| just as a container. |
| 66 SpdyBuffer::SpdyBuffer(const char* data, size_t size) : | 67 SpdyBuffer::SpdyBuffer(const char* data, size_t size) : |
| 67 shared_frame_(new SharedFrame()), | 68 shared_frame_(new SharedFrame()), |
| 68 offset_(0) { | 69 offset_(0) { |
| 69 CHECK_GT(size, 0u); | 70 CHECK_GT(size, 0u); |
| 70 CHECK_LE(size, kMaxSpdyFrameSize); | 71 CHECK_LE(size, kMaxSpdyFrameSize); |
| 71 shared_frame_->data = MakeSpdyFrame(data, size); | 72 shared_frame_->data = MakeSpdyFrame(data, size); |
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| 101 DCHECK_GE(consume_size, 1u); | 102 DCHECK_GE(consume_size, 1u); |
| 102 DCHECK_LE(consume_size, GetRemainingSize()); | 103 DCHECK_LE(consume_size, GetRemainingSize()); |
| 103 offset_ += consume_size; | 104 offset_ += consume_size; |
| 104 for (std::vector<ConsumeCallback>::const_iterator it = | 105 for (std::vector<ConsumeCallback>::const_iterator it = |
| 105 consume_callbacks_.begin(); it != consume_callbacks_.end(); ++it) { | 106 consume_callbacks_.begin(); it != consume_callbacks_.end(); ++it) { |
| 106 it->Run(consume_size, consume_source); | 107 it->Run(consume_size, consume_source); |
| 107 } | 108 } |
| 108 }; | 109 }; |
| 109 | 110 |
| 110 } // namespace net | 111 } // namespace net |
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