PHP Extension

Configure Azure SAS Authentication for REST

Demonstrates Rest.SetAuthAzureSas, which associates an AuthAzureSAS provider so requests are authorized with an Azure Shared Access Signature token.

Background. A SAS token grants time-limited, permission-scoped access to Azure Storage resources without exposing the account key on the wire. Use SAS authorization when a query-token approach is preferred over Shared Key headers.

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PHP Extension

<?php

include("chilkat.php");

$success = false;

$rest = new CkRest();
$bTls = true;
$bAutoReconnect = true;
$success = $rest->Connect('example.com',443,$bTls,$bAutoReconnect);
if ($success == false) {
    print $rest->lastErrorText() . "\n";
    exit;
}

//  Configure Azure Shared Access Signature (SAS) authentication.  Provide the account access key
//  and the SAS token query parameters; Chilkat adds the SAS token to each request.
$azSas = new CkAuthAzureSAS();
//  Normally you would not hard-code secrets in source.  You should instead obtain them from an
//  interactive prompt, environment variable, or a secrets vault.
$azSas->put_AccessKey('BASE64_ACCOUNT_ACCESS_KEY');

//  Associate the provider with the REST object.
$success = $rest->SetAuthAzureSas($azSas);
if ($success == false) {
    print $rest->lastErrorText() . "\n";
    exit;
}

$responseText = $rest->fullRequestNoBody('GET','/mycontainer/myblob.txt');
if ($rest->get_LastMethodSuccess() == false) {
    print $rest->lastErrorText() . "\n";
    exit;
}

print $responseText . "\n";

?>