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124 lines
4.1 KiB
C++
124 lines
4.1 KiB
C++
/**
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* The MIT License (MIT)
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*
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* Copyright (c) 2013-2020 John
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef SRS_PROTOCOL_RTC_STUN_HPP
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#define SRS_PROTOCOL_RTC_STUN_HPP
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#include <srs_core.hpp>
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#include <string>
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#include <srs_kernel_error.hpp>
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class SrsBuffer;
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// @see: https://tools.ietf.org/html/rfc5389
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// The magic cookie field MUST contain the fixed value 0x2112A442 in network byte order
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const uint32_t kStunMagicCookie = 0x2112A442;
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enum SrsStunMessageType
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{
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// see @ https://tools.ietf.org/html/rfc3489#section-11.1
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BindingRequest = 0x0001,
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BindingResponse = 0x0101,
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BindingErrorResponse = 0x0111,
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SharedSecretRequest = 0x0002,
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SharedSecretResponse = 0x0102,
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SharedSecretErrorResponse = 0x0112,
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};
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enum SrsStunMessageAttribute
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{
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// see @ https://tools.ietf.org/html/rfc3489#section-11.2
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MappedAddress = 0x0001,
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ResponseAddress = 0x0002,
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ChangeRequest = 0x0003,
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SourceAddress = 0x0004,
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ChangedAddress = 0x0005,
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Username = 0x0006,
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Password = 0x0007,
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MessageIntegrity = 0x0008,
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ErrorCode = 0x0009,
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UnknownAttributes = 0x000A,
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ReflectedFrom = 0x000B,
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// see @ https://tools.ietf.org/html/rfc5389#section-18.2
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Realm = 0x0014,
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Nonce = 0x0015,
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XorMappedAddress = 0x0020,
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Software = 0x8022,
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AlternateServer = 0x8023,
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Fingerprint = 0x8028,
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Priority = 0x0024,
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UseCandidate = 0x0025,
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IceControlled = 0x8029,
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IceControlling = 0x802A,
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};
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class SrsStunPacket
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{
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private:
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uint16_t message_type;
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std::string username;
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std::string local_ufrag;
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std::string remote_ufrag;
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std::string transcation_id;
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uint32_t mapped_address;
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uint16_t mapped_port;
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bool use_candidate;
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bool ice_controlled;
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bool ice_controlling;
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public:
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SrsStunPacket();
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virtual ~SrsStunPacket();
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public:
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bool is_binding_request() const;
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bool is_binding_response() const;
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uint16_t get_message_type() const;
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std::string get_username() const;
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std::string get_local_ufrag() const;
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std::string get_remote_ufrag() const;
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std::string get_transcation_id() const;
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uint32_t get_mapped_address() const;
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uint16_t get_mapped_port() const;
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bool get_ice_controlled() const;
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bool get_ice_controlling() const;
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bool get_use_candidate() const;
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void set_message_type(const uint16_t& m);
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void set_local_ufrag(const std::string& u);
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void set_remote_ufrag(const std::string& u);
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void set_transcation_id(const std::string& t);
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void set_mapped_address(const uint32_t& addr);
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void set_mapped_port(const uint32_t& port);
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srs_error_t decode(const char* buf, const int nb_buf);
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srs_error_t encode(const std::string& pwd, SrsBuffer* stream);
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private:
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srs_error_t encode_binding_response(const std::string& pwd, SrsBuffer* stream);
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std::string encode_username();
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std::string encode_mapped_address();
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std::string encode_hmac(char* hamc_buf, const int hmac_buf_len);
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std::string encode_fingerprint(uint32_t crc32);
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};
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#endif
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