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Node.js Examples


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(Node.js) 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.

Install Chilkat for Node.js and Electron using npm at

Chilkat npm packages for Node.js

Chilkat npm packages for Electron

on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    var chilkat = require('chilkat_node10_win32'); 
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('chilkat_node10_arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('chilkat_node10_linux32');
    } else {
        var chilkat = require('chilkat_node10_linux64');
    }
} else if (os.platform() == 'darwin') {
    var chilkat = require('chilkat_node10_macosx');
}

function chilkatExample() {

    //  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.

    var authSas = new chilkat.AuthAzureSAS();
    authSas.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.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");

    var dt = new chilkat.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.
    var sasToken = authSas.GenerateToken();
    if (authSas.LastMethodSuccess !== true) {
        console.log(authSas.LastErrorText);
        return;
    }

    console.log("SAS token: " + sasToken);

    //  Save the SAS token to a file.
    //  We can then use this pre-generated token for future Azure Storage Account operations.
    var fac = new chilkat.FileAccess();
    fac.WriteEntireTextFile("qa_data/tokens/azureStorageAccountSas.txt",sasToken,"utf-8",false);

}

chilkatExample();

 

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