(PowerBuilder) DNS Query CAA Records

See more DNS Examples

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

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

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_Dns
oleobject loo_Json
integer li_Success
string ls_Name
integer li_Ttl
integer li_Flags
string ls_Tag
string ls_Value
integer i
integer li_Count_i

loo_Dns = create oleobject
// Use "Chilkat_9_5_0.Dns" for versions of Chilkat < 10.0.0
li_rc = loo_Dns.ConnectToNewObject("Chilkat.Dns")
if li_rc < 0 then
    destroy loo_Dns
    MessageBox("Error","Connecting to COM object failed")
    return
end if

loo_Json = create oleobject
// Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
li_rc = loo_Json.ConnectToNewObject("Chilkat.JsonObject")

loo_Json.EmitCompact = 0

li_Success = loo_Dns.Query("CAA","zoom.us",loo_Json)
if li_Success = 0 then
    Write-Debug loo_Dns.LastErrorText
    destroy loo_Dns
    destroy loo_Json
    return
end if

Write-Debug loo_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
li_Count_i = loo_Json.SizeOfArray("answer.caa")
do while i < li_Count_i
    loo_Json.I = i
    ls_Name = loo_Json.StringOf("answer.caa[i].name")
    li_Ttl = loo_Json.IntOf("answer.caa[i].ttl")
    li_Flags = loo_Json.IntOf("answer.caa[i].flags")
    ls_Tag = loo_Json.StringOf("answer.caa[i].tag")
    ls_Value = loo_Json.StringOf("answer.caa[i].value")
    i = i + 1
loop


destroy loo_Dns
destroy loo_Json