(PowerShell) DNS Query CAA Records

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Shows how to perform a DNS query to retrieve CAA records.

Note: This example requires Chilkat v9.5.0.96 or later.

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Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

$dns = New-Object Chilkat.Dns

$json = New-Object Chilkat.JsonObject
$json.EmitCompact = $false

$success = $dns.Query("CAA","zoom.us",$json)
if ($success -eq $false) {
    $($dns.LastErrorText)
    exit
}

$($json.Emit())

# Sample response.
# Parsing code below..

# {
#   "answer": {
#     "caa": [
#       {
#         "name": "zoom.us",
#         "ttl": 300,
#         "flags": 0,
#         "tag": "iodef",
#         "value": "mailto:security@zoom.us"
#       },
#       {
#         "name": "zoom.us",
#         "ttl": 300,
#         "flags": 0,
#         "tag": "issue",
#         "value": "amazon.com"
#       },
#       {
#         "name": "zoom.us",
#         "ttl": 300,
#         "flags": 0,
#         "tag": "issue",
#         "value": "digicert.com"
#       },
#       {
#         "name": "zoom.us",
#         "ttl": 300,
#         "flags": 0,
#         "tag": "issue",
#         "value": "godaddy.com"
#       },
#       {
#         "name": "zoom.us",
#         "ttl": 300,
#         "flags": 0,
#         "tag": "issue",
#         "value": "letsencrypt.org"
#       },
#       {
#         "name": "zoom.us",
#         "ttl": 300,
#         "flags": 0,
#         "tag": "issue",
#         "value": "pki.goog"
#       },
#       {
#         "name": "zoom.us",
#         "ttl": 300,
#         "flags": 0,
#         "tag": "issue",
#         "value": "sectigo.com"
#       }
#     ]
#   }
# }

# Use this online tool to generate parsing code from sample JSON: 
# Generate Parsing Code from JSON

$i = 0
$count_i = $json.SizeOfArray("answer.caa")
while ($i -lt $count_i) {
    $json.I = $i
    $name = $json.StringOf("answer.caa[i].name")
    $ttl = $json.IntOf("answer.caa[i].ttl")
    $flags = $json.IntOf("answer.caa[i].flags")
    $tag = $json.StringOf("answer.caa[i].tag")
    $value = $json.StringOf("answer.caa[i].value")
    $i = $i + 1
}