mirror of
https://github.com/fleschutz/PowerShell.git
synced 2024-12-16 11:40:53 +01:00
96 lines
2.6 KiB
Markdown
96 lines
2.6 KiB
Markdown
## The *check-ipv6-address.ps1* Script
|
||
|
||
This PowerShell script checks the given IPv6 address for validity
|
||
|
||
## Parameters
|
||
```powershell
|
||
check-ipv6-address.ps1 [[-Address] <String>] [<CommonParameters>]
|
||
|
||
-Address <String>
|
||
Specifies the IPv6 address to check
|
||
|
||
Required? false
|
||
Position? 1
|
||
Default value
|
||
Accept pipeline input? false
|
||
Accept wildcard characters? false
|
||
|
||
[<CommonParameters>]
|
||
This script supports the common parameters: Verbose, Debug, ErrorAction, ErrorVariable, WarningAction,
|
||
WarningVariable, OutBuffer, PipelineVariable, and OutVariable.
|
||
```
|
||
|
||
## Example
|
||
```powershell
|
||
PS> ./check-ipv6-address fe80::200:5aee:feaa:20a2
|
||
✔️ IPv6 fe80::200:5aee:feaa:20a2 is valid
|
||
|
||
```
|
||
|
||
## Notes
|
||
Author: Markus Fleschutz | License: CC0
|
||
|
||
## Related Links
|
||
https://github.com/fleschutz/PowerShell
|
||
|
||
## Source Code
|
||
```powershell
|
||
<#
|
||
.SYNOPSIS
|
||
Checks an IPv6 address for validity
|
||
.DESCRIPTION
|
||
This PowerShell script checks the given IPv6 address for validity
|
||
.PARAMETER Address
|
||
Specifies the IPv6 address to check
|
||
.EXAMPLE
|
||
PS> ./check-ipv6-address fe80::200:5aee:feaa:20a2
|
||
✔️ IPv6 fe80::200:5aee:feaa:20a2 is valid
|
||
.LINK
|
||
https://github.com/fleschutz/PowerShell
|
||
.NOTES
|
||
Author: Markus Fleschutz | License: CC0
|
||
#>
|
||
|
||
param([string]$Address = "")
|
||
|
||
function IsIPv6AddressValid { param([string]$IP)
|
||
$IPv4Regex = '(((25[0-5]|2[0-4][0-9]|[0-1]?[0-9]{1,2})\.){3}(25[0-5]|2[0-4][0-9]|[0-1]?[0-9]{1,2}))'
|
||
$G = '[a-f\d]{1,4}'
|
||
$Tail = @(":",
|
||
"(:($G)?|$IPv4Regex)",
|
||
":($IPv4Regex|$G(:$G)?|)",
|
||
"(:$IPv4Regex|:$G(:$IPv4Regex|(:$G){0,2})|:)",
|
||
"((:$G){0,2}(:$IPv4Regex|(:$G){1,2})|:)",
|
||
"((:$G){0,3}(:$IPv4Regex|(:$G){1,2})|:)",
|
||
"((:$G){0,4}(:$IPv4Regex|(:$G){1,2})|:)")
|
||
[string] $IPv6RegexString = $G
|
||
$Tail | foreach { $IPv6RegexString = "${G}:($IPv6RegexString|$_)" }
|
||
$IPv6RegexString = ":(:$G){0,5}((:$G){1,2}|:$IPv4Regex)|$IPv6RegexString"
|
||
$IPv6RegexString = $IPv6RegexString -replace '\(' , '(?:' # make all groups non-capturing
|
||
[regex] $IPv6Regex = $IPv6RegexString
|
||
if ($IP -imatch "^$IPv6Regex$") {
|
||
return $true
|
||
} else {
|
||
return $false
|
||
}
|
||
}
|
||
|
||
try {
|
||
if ($Address -eq "" ) {
|
||
$Address = read-host "Enter IPv6 address to validate"
|
||
}
|
||
if (IsIPv6AddressValid $Address) {
|
||
"✔️ IPv6 $Address is valid"
|
||
exit 0 # success
|
||
} else {
|
||
write-warning "Invalid IPv6 address: $Address"
|
||
exit 1
|
||
}
|
||
} catch {
|
||
"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
|
||
exit 1
|
||
}
|
||
```
|
||
|
||
*Generated by convert-ps2md.ps1 using the comment-based help of check-ipv6-address.ps1*
|