VBScript

Configure AWS Signature Authentication for REST

Demonstrates Rest.SetAuthAws, which associates an AuthAws provider so Chilkat signs each request using AWS Signature Version 4. The provider supplies the access key, secret key, region, and service name.

Background. AWS requires each request to be signed with a signature derived from the secret key, region, service, and request contents. Configuring the provider lets Chilkat compute and attach the signature automatically.

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VBScript

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
'Create a Unicode (utf-16) output text file.
Set outFile = fso.CreateTextFile("output.txt", True, True)

success = 0

set rest = CreateObject("Chilkat.Rest")
bTls = 1
bAutoReconnect = 1
success = rest.Connect("example.com",443,bTls,bAutoReconnect)
If (success = 0) Then
    outFile.WriteLine(rest.LastErrorText)
    WScript.Quit
End If

'  Configure AWS Signature Version 4 request signing.  Provide the access key, secret key, region,
'  and service name.
set authAws = CreateObject("Chilkat.AuthAws")
'  Normally you would not hard-code secrets in source.  You should instead obtain them from an
'  interactive prompt, environment variable, or a secrets vault.
authAws.AccessKey = "AWS_ACCESS_KEY"
authAws.SecretKey = "AWS_SECRET_KEY"
authAws.Region = "us-east-1"
authAws.ServiceName = "s3"

'  Associate the provider so Chilkat signs each request according to AWS requirements.
success = rest.SetAuthAws(authAws)
If (success = 0) Then
    outFile.WriteLine(rest.LastErrorText)
    WScript.Quit
End If

responseText = rest.FullRequestNoBody("GET","/")
If (rest.LastMethodSuccess = 0) Then
    outFile.WriteLine(rest.LastErrorText)
    WScript.Quit
End If

outFile.WriteLine(responseText)

outFile.Close