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(PHP Extension) How to Generate an Azure Service Bus Shared Access Signature (SAS)

Demonstrates generating and using an Azure Service Bus Shared Access Signature (SAS).

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

Chilkat PHP Downloads

PHP Extension for Windows, Linux, MAC OS X,
Alpine Linux, Solaris, OpenBSD, FreeBSD,
and Linux armhf/aarch64

<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

//  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 Azure Service Bus.
//  -------------------------------------------------------------------

$authSas = new CkAuthAzureSAS();
$authSas->put_AccessKey('AzureServiceBus_PrimaryKey');

//  The SAS token for Service Bus will look like this:
//  (The order of params will be different.  The order does not matter.)
//  sig=<signature-string>&se=<expiry>&skn=<keyName>&sr=<URL-encoded-resourceURI>

//  Specify the format of the string to sign.
$authSas->put_StringToSign('resourceURI,expiry');

//  Create an expiry to 30 days in the future.
$dtExpiry = new CkDateTime();
$dtExpiry->SetFromCurrentSystemTime();
$dtExpiry->AddDays(30);
$authSas->SetTokenParam('expiry','se',$dtExpiry->getAsUnixTimeStr(true));

//  Set the skn (keyname)
//  This example uses the key "RootManageSharedAccessKey".  This give full access.
//  In a typical scenario, you would create a new Azure key (for the service bus)
//  in the Azure portal, such that the key has limited permissions.  This would
//  allow you to give the SAS token to others for specific access for some period of time.
$authSas->SetTokenParam('keyName','skn','RootManageSharedAccessKey');

//  Set the URL-encoded-resourceURI
$sbResourceUri = new CkStringBuilder();
$sbResourceUri->Append('https://<yournamespace>.servicebus.windows.net/');
$sbResourceUri->Encode('url','utf-8');
$authSas->SetTokenParam('resourceURI','sr',$sbResourceUri->getAsString());

//  Generate the SAS token.
$sasToken = $authSas->generateToken();
if ($authSas->get_LastMethodSuccess() != true) {
    print $authSas->lastErrorText() . "\n";
    exit;
}

print 'SAS token: ' . $sasToken . "\n";

//  Save the SAS token to a file.
//  We can then use this pre-generated token for future Service Bus operations.
$fac = new CkFileAccess();
$fac->WriteEntireTextFile('qa_data/tokens/serviceBusSas.txt',$sasToken,'utf-8',false);

?>

 

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