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How to Generate an Azure Storage Account Shared Access Signature (SAS)

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Shows how to generate a Shared Access Signature (SAS) for an Azure Storage Account.

Note: This example requires Chilkat v9.5.0.65 or greater.

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;  Note: Requires Chilkat v9.5.0.65 or greater.

;  This requires the Chilkat API to have been previously unlocked.
;  See Global Unlock Sample for sample code.

;  --------------------------------------------------------------------------
;  Create a Shared Access Signature (SAS) token for an Azure Storage Account.
;  --------------------------------------------------------------------------

;  See https://docs.microsoft.com/en-us/rest/api/storageservices/fileservices/constructing-an-account-sas 
;  for details regarding the Azure Storage Account SAS fields.

$oAuthSas = ObjCreate("Chilkat.AuthAzureSAS")
$oAuthSas.AccessKey = "AZURE_ACCESS_KEY"

;  Specify the format of the string to sign.
;  Each comma character in the following string represents a LF ("\n") character.
;  The names specified in the StringToSign are replaced with the values specified
;  in the subsequent calls to SetTokenParam and SetNonTokenParam,.

;  Note: The trailing comma in the StringToSign is intentional and important. This indicates that the 
;  string to sign will end with a "\n".

;  Also note: The names in the StringToSign are case sensitive.  The names
;  specified in the 1st argument in the calls to SetNonTokenParam and SetTokenParam should
;  match a name listed in StringToSign. 
$oAuthSas.StringToSign = "accountname,signedpermissions,signedservice,signedresourcetype,signedstart,signedexpiry,signedIP,signedProtocol,signedversion,"

;   The account name is "chilkat".  Use your own account name instead of "chilkat".
;   Also use your own container name instead of "mycontainer".
$oAuthSas.SetNonTokenParam("accountname","chilkat")

$oAuthSas.SetTokenParam("signedpermissions","sp","rwdlacup")
$oAuthSas.SetTokenParam("signedservice","ss","bfqt")
$oAuthSas.SetTokenParam("signedresourcetype","srt","sco")

$oDt = ObjCreate("Chilkat.CkDateTime")
$oDt.SetFromCurrentSystemTime()
$oAuthSas.SetTokenParam("signedstart","st",$oDt.GetAsIso8601("YYYY-MM-DDThh:mmTZD",False))

;  This SAS token will be valid for 30 days.
$oDt.AddDays(30)
$oAuthSas.SetTokenParam("signedexpiry","se",$oDt.GetAsIso8601("YYYY-MM-DDThh:mmTZD",False))

$oAuthSas.SetTokenParam("signedProtocol","spr","https")

;   Specifiy values and query param names for each field.
;   If a field is not specified, then an empty string will be used for its value.
$oAuthSas.SetTokenParam("signedversion","sv","2015-04-05")

;  Note that we did not call SetTokenParam for "signedIP".  For any omitted fields
;  the value will default to the empty string.

;  Generate the SAS token.
Local $sasToken = $oAuthSas.GenerateToken()
If ($oAuthSas.LastMethodSuccess <> True) Then
    ConsoleWrite($oAuthSas.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("SAS token: " & $sasToken & @CRLF)

;  Save the SAS token to a file.
;  We can then use this pre-generated token for future Azure Storage Account operations.
$oFac = ObjCreate("Chilkat.FileAccess")
$oFac.WriteEntireTextFile("qa_data/tokens/azureStorageAccountSas.txt",$sasToken,"utf-8",False)