forked from deanmcniven/wsl2-vpn-support
-
Notifications
You must be signed in to change notification settings - Fork 0
/
configure-wsl-networking.ps1
108 lines (92 loc) · 4.73 KB
/
configure-wsl-networking.ps1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
########### Configuration Parameters
$vpn_interface_desc = "PANGP Virtual Ethernet Adapter Secure"
$wsl_interface_name = "vEthernet (WSL (Hyper-V firewall))"
$wsl_interface_id = "eth0"
$config_default_wsl_guest = 1 # 0: False, 1: True
$wsl_guest_list = @()
$state_file = "$HOME\wsl-added-routes.txt"
########### End Configuration Parameters
Write-Output "===================="
Write-Output "= WSL2 VPN Support ="
Write-Output "===================="
# Load Previous rules from file
Write-Output "Checking for previous configuration ..."
$previous_ips = [System.Collections.ArrayList]@()
if ((Test-Path $state_file)) {
Write-Output "Loading State"
foreach ($item IN (Get-Content -Path $state_file)) {
$previous_ips.Add($item.Trim())
}
}
Write-Output "[DEBUG] WSL2 Guest IP Addresses: Previous (Stored) = $previous_ips"
# Check if VPN Gateway is UP
Write-Output "Checking VPN State ..."
$vpn_state = (Get-NetAdapter | Where-Object { $_.InterfaceDescription -Match "$vpn_interface_desc" } | Select-Object -ExpandProperty Status)
Write-Output "[DEBUG] VPN Connection Status: $vpn_state"
if ($vpn_state -eq "Up") {
Write-Output "VPN is UP"
# Get key metrics for the WSL Network Interface
Write-Output "Determining WSL2 Interface parameters ..."
$wsl_interface_index = (Get-NetAdapter -IncludeHidden -Name "$wsl_interface_name" | Select-Object -ExpandProperty ifIndex)
Write-Output "[DEBUG] WSL2 Interface Parameters: Index = $wsl_interface_index"
Write-Output "Determining VPN Interface parameters ..."
$vpn_interface_index = (Get-NetAdapter | Where-Object { $_.InterfaceDescription -Match "$vpn_interface_desc" } | Select-Object -ExpandProperty ifIndex)
$vpn_interface_routemetric = (Get-NetRoute -InterfaceIndex $vpn_interface_index | Select-Object -ExpandProperty RouteMetric | Sort-Object -Unique | Select-Object -First 1)
Write-Output "[DEBUG] VPN Interface Parameters: Index = $vpn_interface_index"
Write-Output "[DEBUG] VPN Interface Parameters: RouteMetric (Actual) = $vpn_interface_routemetric"
if ($vpn_interface_routemetric -eq 0) {
$vpn_interface_routemetric = 1
Write-Output "[DEBUG] VPN Interface Parameters: RouteMetric (Adjusted) = $vpn_interface_routemetric"
}
# Get list of IPs for the WSL Guest(s)
Write-Output "Determining IP Addresses of WSL2 Guest(s) ..."
$wsl_guest_ips = [System.Collections.ArrayList]@()
if ($config_default_wsl_guest -gt 0) {
$wsl_ip_info = (wsl ip -o addr | Select-String "$wsl_interface_id\s+inet ")
$guest_cidr = ($wsl_ip_info[0] -split '\s+' | Select-Object -Index 3)
$guest_ip = $guest_cidr.ToString().Split('/')[0]
if ([string]::IsNullOrEmpty($guest_ip)) {
Write-Output "[DEBUG] No IP Found in default WSL2 Distribution, trying next. (Is your default WSL2 non-interactive like Docker Desktop?)"
}
else {
$wsl_guest_ips.Add($guest_ip.Trim())
$previous_ips.Remove($guest_ip.Trim())
}
}
foreach ($guest_name IN $wsl_guest_list) {
$wsl_ip_info = (wsl --distribution $guest_name ip -o addr | Select-String "$wsl_interface_id\s+inet ")
$guest_cidr = ($wsl_ip_info[0] -split '\s+' | Select-Object -Index 3)
$guest_ip = $guest_cidr.ToString().Split('/')[0]
if ([string]::IsNullOrEmpty($guest_ip)) {
Write-Output "[DEBUG] No IP Found in default WSL2 Distribution, trying next. (Is your default WSL2 non-interactive like Docker Desktop?)"
}
else {
$wsl_guest_ips.Add($guest_ip.Trim())
$previous_ips.Remove($guest_ip.Trim())
}
}
Write-Output "[DEBUG] WSL2 Guest IP Addresses: Previous (Revised) = $previous_ips"
Write-Output "[DEBUG] WSL2 Guest IP Addresses: Current = $wsl_guest_ips"
# Create rules for each WSL guest
Write-Output "Creating routes ..."
Write-Output $wsl_guest_ips | Out-File -FilePath $state_file
foreach ($ip IN $wsl_guest_ips) {
Write-Output "Creating route for $ip"
Write-Output "[DEBUG] Command: route add $ip mask 255.255.255.255 $ip metric $vpn_interface_routemetric if $wsl_interface_index"
route add $ip mask 255.255.255.255 $ip metric $vpn_interface_routemetric if $wsl_interface_index
}
}
else {
Write-Output "VPN is DOWN"
Write-Output "" | Out-File -FilePath $state_file
}
# Clean up previous IPs
Write-Output "Performing cleanup ..."
foreach ($ip IN $previous_ips) {
if ($ip.Trim() -ne "") {
Write-Output "Deleting route for $ip"
Write-Output "[DEBUG] Command: route delete $ip mask 255.255.255.255 $ip"
route delete $ip mask 255.255.255.255 $ip
}
}
Write-Output "Done"