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

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.

Chilkat PHP Downloads

PHP Extension for Windows, Linux, MacOS,
Alpine Linux, Solaris

<?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 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.

$authSas = new CkAuthAzureSAS();
$authSas->put_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. 
$authSas->put_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".
$authSas->SetNonTokenParam('accountname','chilkat');

$authSas->SetTokenParam('signedpermissions','sp','rwdlacup');
$authSas->SetTokenParam('signedservice','ss','bfqt');
$authSas->SetTokenParam('signedresourcetype','srt','sco');

$dt = new CkDateTime();
$dt->SetFromCurrentSystemTime();
$authSas->SetTokenParam('signedstart','st',$dt->getAsIso8601('YYYY-MM-DDThh:mmTZD',false));

// This SAS token will be valid for 30 days.
$dt->AddDays(30);
$authSas->SetTokenParam('signedexpiry','se',$dt->getAsIso8601('YYYY-MM-DDThh:mmTZD',false));

$authSas->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.
$authSas->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.
$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 Azure Storage Account operations.
$fac = new CkFileAccess();
$fac->WriteEntireTextFile('qa_data/tokens/azureStorageAccountSas.txt',$sasToken,'utf-8',false);

?>

 

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