WireGuard does not provide any configuration messages, meaning that we cannot push the IP address we receive from the DHCP server to the client.
In order to overcome the limitation we don't perform any DHCP operations and instead just extract the source IP address from the first IPv4 packet we receive in the tunnel.
The gateway address and the subnet mask can be set using the new "SetStaticNetwork" command. The values can be retrieved using "OptionsGet".
In future we will add a "allowed source IP addresses" function, similar to what the original WireGuard implementation provides.
================================================================================
SetStaticNetwork command - Set Virtual Hub static IPv4 network parameters
Help for command "SetStaticNetwork"
Purpose:
Set Virtual Hub static IPv4 network parameters
Description:
Set the static IPv4 network parameters for the Virtual Hub. They are used when DHCP is not available (e.g. WireGuard sessions).
You can get the current settings by using the OptionsGet command.
Usage:
SetStaticNetwork [/GATEWAY:gateway] [/SUBNET:subnet]
Parameters:
/GATEWAY - Specify the IP address of the gateway that will be used for internet communication.
/SUBNET - Specify the subnet mask, required to determine the size of the local VPN network.
ProtoOptionsGet command - Lists the options for the specified protocol
Help for command "ProtoOptionsGet"
Purpose:
Lists the options for the specified protocol
Description:
This command can be used to retrieve the options for a specific protocol.
Detailed info (e.g. value type) will be shown.
You can change an option's value with the ProtoOptionsSet command.
Usage:
ProtoOptionsGet [protocol]
Parameters:
protocol - Protocol name.
ProtoOptionsSet command - Sets an option's value for the specified protocol
Help for command "ProtoOptionsSet"
Purpose:
Sets an option's value for the specified protocol
Description:
This command can be used to change an option's value for a specific protocol.
You can retrieve the options using the ProtoOptionsGet command.
To execute this command, you must have VPN Server administrator privileges.
Usage:
ProtoOptionsSet [protocol] [/NAME:option_name] [/VALUE:string/true/false]
Parameters:
protocol - Protocol name.
/NAME - Option name.
/VALUE - Option value. Make sure to write a value that is accepted by the specified protocol!
BuildUtil compiles the project as 32 bit and 64 bit, before building the installer package.
64 bit binaries have the "_x64" suffix and are added to the package alongside the 32 bit ones (that have no suffix).
The CMake project compiles the binaries for a single architecture and they have no suffix.
We decided that providing two separate installers is the best solution.
As for the binaries with the "_ia64" suffix: they never existed during the this repository's lifespan.
SoftEther VPN originally created the NIC in the UP state and never changed it, even when the the client was not connected.
The behavior was changed in 59e1483dbf, which also added the NicDownOnDisconnect option
The option was disabled by default for backwards compatibility with scripts that don't check whether the NIC is down, but it's not ideal.
This commit forces the correct behavior and removes the commands "TUNDownOnDisconnectEnable", "TUNDownOnDisconnectDisable" and "TUNDownOnDisconnectGet".
PortsUDPSet: This command can be used to specify a single or multiple UDP ports the server should listen on. "0" can be specified to disable the UDP listener.
Administrator privileges are required to execute the command.
PortsUDPGet: This command can be used to retrieve the UDP ports the server is listening on.
The two commands replace the functionality that was previously provided by OpenVpnEnable and OpenVpnGet, respectively.
Originally, StrToPortList() returned NULL when it encountered a number equal to 0 or higher than 65535.
This commit adds a new parameter to the function called "limit_range":
- When its value is true, the function retains the original behavior.
- When its value is false, the function doesn't check whether the number is in the network port number range (1-65535).
The change is required because the command to set the UDP ports will allow to remove all ports by specifying "0" as the port number.
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/Command.c:9378]: (style) Variable 'ret' is assigned a value that is never used.
[src/Cedar/Command.c:9999]: (style) The function 'CmdEvalNetworkAndSubnetMask6' is never used.
found by cppcheck and coverity
[src/Cedar/Command.c:523] -> [src/Cedar/Command.c:532]: (style) Variable 'ok' is reassigned a value before the old one has been used.
[src/Cedar/Command.c:776]: (style) Variable 'tick2' is assigned a value that is never used.
[src/Cedar/Command.c:2244]: (style) Variable 'halt_timeout' is assigned a value that is never used.
[src/Cedar/Command.c:2246]: (style) Variable 'check_clock_seed' is assigned a value that is never used.
[src/Cedar/Command.c:2247]: (style) Variable 'halting' is assigned a value that is never used.
[src/Cedar/Command.c:6904]: (style) Unused variable: tmp
[src/Cedar/Command.c:12217]: (style) Variable 'packet_log' is assigned a value that is never used.
[src/Cedar/Command.c:20825]: (style) Variable 'ret' is assigned a value that is never used.
[src/Cedar/Command.c:20883]: (style) Variable 'ret' is assigned a value that is never used.
[src/Cedar/Command.c:20927]: (style) Variable 'ret' is assigned a value that is never used.
[src/Cedar/Command.c:10022]: (style) The function 'CmdEvalIpAndMask46' is never used.
[src/Cedar/Command.c:10109]: (style) The function 'CmdEvalNetworkAndSubnetMask46' is never used.
[src/Cedar/Command.c:23025]: (style) The function 'CmdPrintRow' is never used.
[src/Cedar/Command.c:167]: (style) The function 'InRpcTtResult' is never used.
[src/Cedar/Command.c:148]: (style) The function 'OutRpcTtResult' is never used.
With server certificate validation enabled, vpnclient unconditionally
stopped connection on untrusted server certificate. Added account
configuration parameter to retry connection if server certivicate failed
validation.
On startup client creates TUN interface in UP state and kept it UP even
if connection to the server was lost. Creating interface in DOWN state,
turning it UP on successful (re-)connection to server and DOWN on either
disconnect or connection loss would enable DHCP client (say dhclient5)
to detect necessity for lease renewal.
Added a client configuration parameter to create TUN interface in DOWN
state and commands to enable, disable, and query the configuration
parameter.
Enabling the parameter causes client to put all unused TUN interfaces
DOWN, create new TUN interfaces in DOWN state, and turn TUN interfaces
corresponding to active sessions DOWN on connection loss or
disconnecting from server.
Disabling the parameter forces client to turn all TUN interfaces UP and
create new TUN interfaces in UP state.
Default value is 'Disable'.
