scripts/Windows/add_ssh_known_hosts.ps1
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function Get-IPs { Param( [Parameter(Mandatory = $true)] [array] $Subnets ) foreach ($subnet in $subnets) { #Split IP and subnet $IP = ($Subnet -split "\/")[0] $SubnetBits = ($Subnet -split "\/")[1] if ($SubnetBits -eq "32") { $IP } else { #Convert IP into binary #Split IP into different octects and for each one, figure out the binary with leading zeros and add to the total $Octets = $IP -split "\." $IPInBinary = @() foreach($Octet in $Octets) { #convert to binary $OctetInBinary = [convert]::ToString($Octet,2) #get length of binary string add leading zeros to make octet $OctetInBinary = ("0" * (8 - ($OctetInBinary).Length) + $OctetInBinary) $IPInBinary = $IPInBinary + $OctetInBinary } $IPInBinary = $IPInBinary -join "" #Get network ID by subtracting subnet mask $HostBits = 32-$SubnetBits $NetworkIDInBinary = $IPInBinary.Substring(0,$SubnetBits) #Get host ID and get the first host ID by converting all 1s into 0s $HostIDInBinary = $IPInBinary.Substring($SubnetBits,$HostBits) $HostIDInBinary = $HostIDInBinary -replace "1","0" #Work out all the host IDs in that subnet by cycling through $i from 1 up to max $HostIDInBinary (i.e. 1s stringed up to $HostBits) #Work out max $HostIDInBinary $imax = [convert]::ToInt32(("1" * $HostBits),2) -1 $IPs = @() #Next ID is first network ID converted to decimal plus $i then converted to binary For ($i = 1 ; $i -le $imax ; $i++) { #Convert to decimal and add $i $NextHostIDInDecimal = ([convert]::ToInt32($HostIDInBinary,2) + $i) #Convert back to binary $NextHostIDInBinary = [convert]::ToString($NextHostIDInDecimal,2) #Add leading zeros #Number of zeros to add $NoOfZerosToAdd = $HostIDInBinary.Length - $NextHostIDInBinary.Length $NextHostIDInBinary = ("0" * $NoOfZerosToAdd) + $NextHostIDInBinary #Work out next IP #Add networkID to hostID $NextIPInBinary = $NetworkIDInBinary + $NextHostIDInBinary #Split into octets and separate by . then join $IP = @() For ($x = 1 ; $x -le 4 ; $x++) { #Work out start character position $StartCharNumber = ($x-1)*8 #Get octet in binary $IPOctetInBinary = $NextIPInBinary.Substring($StartCharNumber,8) #Convert octet into decimal $IPOctetInDecimal = [convert]::ToInt32($IPOctetInBinary,2) #Add octet to IP $IP += $IPOctetInDecimal } #Separate by . $IP = $IP -join "." $IPs += $IP } $IPs } } } Write-Host "Adding SSH known hosts..." -ForegroundColor Cyan $sshPath = Join-Path $Home ".ssh" if(-not (Test-Path $sshPath)) { New-Item $sshPath -ItemType directory -Force } $contents = @() # GitHub IP addresses $GIthubIPs="192.30.252.0/22", "185.199.108.0/22", "13.229.188.59/32", "13.250.177.223/32", "18.194.104.89/32", "18.195.85.27/32", "35.159.8.160/32", "52.74.223.119/32" Get-IPs -subnets $GIthubIPs | ForEach-Object { $contents += "github.com,$_ ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAq2A7hRGmdnm9tUDbO9IDSwBK6TbQa+PXYPCPy6rbTrTtw7PHkccKrpp0yVhp5HdEIcKr6pLlVDBfOLX9QUsyCOV0wzfjIJNlGEYsdlLJizHhbn2mUjvSAHQqZETYP81eFzLQNnPHt4EVVUh7VfDESU84KezmD5QlWpXLmvU31/yMf+Se8xhHTvKSCZIFImWwoG6mbUoWf9nzpIoaSjB+weqqUUmpaaasXVal72J+UX2B+2RPW3RcT0eOzQgqlJL3RKrTJvdsjE3JEAvGq3lGHSZXy28G3skua2SmVi/w4yCE6gbODqnTWlg7+wC604ydGXA8VJiS5ap43JXiUFFAaQ==" } # BitBucket $BitBucketIPs="104.192.143.1", "104.192.143.2", "104.192.143.3", "104.192.143.65", "104.192.143.66", "104.192.143.67" $BitBucketIPs | ForEach-Object { $contents += "bitbucket.org,$_ ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAubiN81eDcafrgMeLzaFPsw2kNvEcqTKl/VqLat/MaB33pZy0y3rJZtnqwR2qOOvbwKZYKiEO1O6VqNEBxKvJJelCq0dTXWT5pbO2gDXC6h6QDXCaHo6pOHGPUy+YBaGQRGuSusMEASYiWunYN0vCAI8QaXnWMXNMdFP3jHAJH0eDsoiGnLPBlBp4TNm6rYI74nMzgz3B9IikW4WVK+dc8KZJZWYjAuORU3jc1c/NPskD2ASinf8v3xnfXeukU0sJ5N6m5E8VLjObPEO+mN2t/FZTMZLiFqPWc/ALSqnMnnhwrNi2rbfg/rd/IpL8Le3pSBne8+seeFVBoGqzHM9yXw==" } $knownhostfile = Join-Path $sshPath "known_hosts" [IO.File]::WriteAllLines($knownhostfile, $contents) Write-Host "Known hosts configured" -ForegroundColor Green |