The PROTO structure is now used to identify the system as a whole, rather than a single protocol. It's stored and initialized in Server.
ProtoCompare(), ProtoAdd() and ProtoDetected() are renamed to make the difference between PROTO and PROTO_IMPL more clear.
ProtoGet() and ProtoNum() are removed because the related list can now be accessed directly by Server.
This commit adds a protocol interface to the server, its purpose is to manage TCP connections and the various third-party protocols.
More specifically, ProtoHandleConnection() takes care of exchanging the packets between the local and remote endpoint; the protocol implementation only has to parse them and act accordingly.
The interface knows which protocol is the connection for by calling IsPacketForMe(), a function implemented for each protocol.
To fix the bug of OpenVPN 2.4.6 and particular version of kernel mode TAP driver on Linux, the TAP device must be up after the OpenVPN client is connected. However there is no direct push instruction to do so to OpenVPN client. Therefore we push the dummy IPv4 address (RFC7600) to the OpenVPN client to enforce the TAP driver UP state.
found by coverity, cppcheck
[src/Cedar/Cedar.c:1605]: (style) The function 'EnableDebugLog' is never used.
[src/Cedar/Cedar.c:858]: (style) The function 'GetUnestablishedConnections' is never used.
[src/Cedar/Cedar.c:652]: (style) The function 'InitHiddenPassword' is never used.
[src/Cedar/Cedar.c:633]: (style) The function 'IsHiddenPasswordChanged' is never used.
[src/Cedar/Cedar.c:393]: (style) The function 'IsInNoSsl' is never used.
[src/Cedar/Cedar.c:1785]: (style) The function 'IsLaterBuild' is never used.
[src/Cedar/Account.c:854]: (style) The function 'AddGroupTraffic' is never used.
[src/Mayaqua/Secure.c:1455]: (style) The function 'AddSecObjToEnumCache' is never used.
[src/Mayaqua/Network.c:18445]: (style) The function 'AddSockList' is never used.
[src/Cedar/Account.c:870]: (style) The function 'AddUserTraffic' is never used.
[src/Cedar/Server.c:1045]: (style) The function 'AdjoinEnumLogFile' is never used.
[src/Cedar/Admin.c:13780]: (style) The function 'AdminConnect' is never used.
[src/Mayaqua/Encrypt.c:855]: (style) The function 'BigNumToStr' is never used.
[src/Mayaqua/Str.c:2113]: (style) The function 'Bit128ToStr' is never used.
[src/Mayaqua/Encrypt.c:898]: (style) The function 'BufToBigNum' is never used.
[src/Mayaqua/Internat.c:1874]: (style) The function 'CalcStrToUtf8' is never used.
[src/Cedar/Hub.c:6689]: (style) The function 'CalcTrafficDiff' is never used.
[src/Mayaqua/Internat.c:1819]: (style) The function 'CalcUtf8ToStr' is never used.
[src/Mayaqua/Network.c:6495]: (style) The function 'CanGetTcpProcessId' is never used.
[src/Cedar/WinUi.c:7226]: (style) The function 'CbInsertStrA' is never used.
[src/Cedar/Client.c:3035]: (style) The function 'CcEnumObjectInSecure' is never used.
[src/Cedar/Client.c:2826]: (style) The function 'CcGetCommonProxySetting' is never used.
[src/Cedar/Client.c:2857]: (style) The function 'CcSetCommonProxySetting' is never used.
[src/Cedar/Cedar.c:575]: (style) The function 'CedarLog' is never used.
[src/Cedar/WinUi.c:9841]: (style) The function 'Center2' is never used.
[src/Mayaqua/Encrypt.c:814]: (style) The function 'CertTest' is never used.
[src/Mayaqua/Encrypt.c:809]: (style) The function 'CertTest2' is never used.
[src/Mayaqua/Encrypt.c:819]: (style) The function 'CertTest_' is never used.
[src/Mayaqua/Cfg.c:1705]: (style) The function 'CfgIsFolder' is never used.
