Now that Proto supports UDP, the server can handle multiple protocols on each UDP port.
The UDP ports are specified by the "OpenVPN_UdpPortList" configuration setting, because:
- OpenVPN is currently the only UDP protocol supported by SoftEther VPN to allow a custom port number.
- Before Proto was introduced, a unified interface for the protocols didn't exist; each protocol implementation had to create its own listener.
In preparation for the upcoming WireGuard implementation, this commit renames "OpenVPN_UdpPortList" to "PortsUDP", which should clarify that the setting is global.
The change is reflected in the code. Also, the ports are now stored in a LIST rather than a string. The conversion between string and LIST only happens when loading/saving the configuration.
The default UDP ports are now the same as the TCP ones (443, 992, 1194, 5555).
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.
- Fixed the RADIUS PEAP client to use the standard TLS versioning.
- Implementation of a function to fix the MAC address of L3 VPN protocol by entering e.g. "MAC: 112233445566" in the "Notes" field of the user information.
- Implementation of a function to fix the virtual MAC address to be assigned to the L3 VPN client as a string attribute from RADIUS server when authentication.
This allows an OpenVPN client to bypass a firewall which is aware of the protocol and is able to block it.
The XOR mask set on the server has to be the same on the client, otherwise it will not be able to connect with certain obfuscation modes.
A special OpenVPN client built with the "XOR patch" is required in order to use this function, because it has never been merged in the official OpenVPN repository.
Two parameters are added to the server configuration: "OpenVPNObfuscationMethod" and "OpenVPNObfuscationMask".
Their value can be retrieved with "OpenVpnObfuscationGet" and set with "OpenVpnObfuscationEnable" in the VPN Command Line Management Utility.
found by coverity, cppcheck
[src/Cedar/Server.c:2899]: (style) Variable 'is_vgs_enabled' is assigned a value that is never used.
[src/Cedar/Server.c:3961]: (style) Variable 'id' is assigned a value that is never used.
[src/Cedar/Server.c:5723]: (style) Variable 'c' is assigned a value that is never used.
[src/Cedar/Server.c:5767]: (style) Variable 'num_connections_per_ip' is assigned a value that is never used.
[src/Cedar/Server.c:7327]: (style) Variable 'num' is assigned a value that is never used.
[src/Cedar/Server.c:8444]: (style) The function 'SiCallEnumHubBegin' is never used.
[src/Cedar/Server.c:8454]: (style) The function 'SiCallEnumHubEnd' is never used.
[src/Cedar/Server.c:9923]: (style) The function 'SiCallTaskAsyncBegin' is never used.
[src/Cedar/Server.c:9949]: (style) The function 'SiCallTaskAsyncEnd' is never used.
[src/Cedar/Server.c:10769]: (style) The function 'SiCheckCurrentRegion' is never used.
[src/Cedar/Server.c:2831]: (style) The function 'SiGetAzureEnable' is never used.
[src/Cedar/Server.c:208]: (style) The function 'SiGetServerNumUserObjects' is never used.
[src/Cedar/Server.c:2435]: (style) The function 'SiInitBridge' is never used.
[src/Cedar/Server.c:2540]: (style) The function 'SiTest' is never used.
[src/Cedar/Server.c:6707]: (style) The function 'StGetServer' 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.
* Allow specifying cipher suites instead of single ciphers.
CipherName now specifies all cipher suites instead of the
preferred cipher. This allows insecure ciphers like RC4 to
be permanently disabled, instead of being the default fallback
when the preferred cipher is unsupported.
CipherName is now left for OpenSSL to verify. Should it be
invalid, a secure default is used. The default CipherName setting
for new servers is one such invalid string: "~DEFAULT~". This
allows for future updates to change the default and the servers
can stay secure.
* Remove unused temporary variable.
