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#pragma once |
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#include "inc.h" |
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#include "utils.h" |
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#include "Error.h" |
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#include "FrameHeader.h" |
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#include |
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#include |
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#include |
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#include |
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#include |
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#include |
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namespace panda { namespace protocol { namespace websocket { |
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using panda::string; |
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struct Frame : virtual panda::Refcnt, AllocatedObject { |
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static constexpr int MAX_CONTROL_PAYLOAD = 125; |
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static constexpr int MAX_CLOSE_PAYLOAD = MAX_CONTROL_PAYLOAD - 2; |
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ErrorCode error; |
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std::vector payload; |
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Frame (bool mask_required, size_t max_size) : _mask_required(mask_required), _max_size(max_size), _state(State::HEADER) {} |
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bool is_control () const { return _header.is_control(); } |
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Opcode opcode () const { return _header.opcode; } |
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bool final () const { return _header.fin; } |
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bool rsv1 () const { return _header.rsv1; } |
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bool rsv2 () const { return _header.rsv2; } |
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bool rsv3 () const { return _header.rsv3; } |
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size_t payload_length () const { return _header.length; } |
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uint16_t close_code () const { return _close_code; } |
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string close_message () const { return _close_message; } |
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size_t max_size () const { return _max_size; } |
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void max_size (size_t newsize) { _max_size = newsize; } |
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bool parse (string& buf); |
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void reset () { |
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_state = State::HEADER; |
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_header.reset(); |
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error.clear(); |
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payload.clear(); |
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} |
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static string compile (const FrameHeader& header) { |
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return header.compile(0); |
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} |
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static string compile (const FrameHeader& header, string& payload) { |
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size_t plen = payload.length(); |
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if (header.has_mask && plen) crypt_mask(payload.buf(), plen, header.mask, 0); |
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return header.compile(plen); |
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} |
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template |
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static string compile (const FrameHeader& header, It payload_begin, It payload_end) { |
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size_t plen = 0; |
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auto payload = IteratorPair(payload_begin, payload_end); |
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if (header.has_mask) for (string& str : payload) { |
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auto slen = str.length(); |
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crypt_mask(str.buf(), slen, header.mask, plen); |
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plen += slen; |
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} |
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else for (string& str : payload) plen += str.length(); |
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return header.compile(plen); |
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} |
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private: |
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enum class State { HEADER, PAYLOAD, DONE }; |
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bool _mask_required; |
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size_t _max_size; |
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State _state; |
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FrameHeader _header; |
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uint64_t _payload_bytes_left; |
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uint16_t _close_code; |
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string _close_message; |
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}; |
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using FrameSP = panda::iptr; |
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}}} |