Node.js

Sign Manifest File to Generate a Passbook .pkpass in Memory

Demonstrates how to create a Passbook .pkpass archive by creating a signature of a manifest file and then zipping to a .pkpass archive in memory Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

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

    // ---------------------------------------------------------------------------------------------
    // This example is the same as Sign Manifest File to Generate a Passbook .pkpass file
    // except everything happens in memory (no input files, no output files)
    // ---------------------------------------------------------------------------------------------

    // First create the manifest.json

    var manifest = new chilkat.JsonObject();
    var crypt = new chilkat.Crypt2();

    var zip = new chilkat.Zip();
    zip.NewZip("notUsedAndNeverCreated.zip");

    crypt.HashAlgorithm = "sha1";
    // Return hashes as lowercase hex.
    crypt.EncodingMode = "hexlower";

    var digestStr;

    var pngData = new chilkat.BinData();
    // Assume we load the pngData with bytes for "icon.png" from somewhere, such as a byte array in memory.
    zip.AddBd("icon.png",pngData);
    digestStr = crypt.HashBdENC(pngData);
    manifest.UpdateString("\"icon.png\"",digestStr);

    pngData.Clear();
    // Assume we load the pngData with bytes for "icon@2x.png" from somewhere...
    zip.AddBd("icon@2x.png",pngData);
    digestStr = crypt.HashBdENC(pngData);
    manifest.UpdateString("\"icon@2x.png\"",digestStr);

    pngData.Clear();
    // Assume we load the pngData with bytes for "logo.png" from somewhere...
    zip.AddBd("logo.png",pngData);
    digestStr = crypt.HashBdENC(pngData);
    manifest.UpdateString("\"logo.png\"",digestStr);

    pngData.Clear();
    // Assume we load the pngData with bytes for "logo@2x.png" from somewhere...
    zip.AddBd("logo@2x.png",pngData);
    digestStr = crypt.HashBdENC(pngData);
    manifest.UpdateString("\"logo@2x.png\"",digestStr);

    var passJson = "{ .... }";    //  Contains the contents of pass.json
    zip.AddString("pass.json",passJson,"utf-8");
    digestStr = crypt.HashStringENC(passJson);
    manifest.UpdateString("\"pass.json\"",digestStr);

    zip.AddString("manifest.json",manifest.Emit(),"utf-8");

    // Make sure we have the Apple WWDR intermediate certificate available for 
    // the cert chain in the signature.
    var certVault = new chilkat.XmlCertVault();
    var appleWwdrCert = new chilkat.Cert();
    success = appleWwdrCert.LoadByCommonName("Apple Worldwide Developer Relations Certification Authority");
    if (success !== true) {
        console.log("The Apple WWDR intermediate certificate is not installed.");
        console.log("It is available at https://developer.apple.com/certificationauthority/AppleWWDRCA.cer");
        console.log("You may alternatively load the .cer like this...");
        success = appleWwdrCert.LoadFromFile("qa_data/certs/AppleWWDRCA.cer");
        if (success == false) {
            console.log(appleWwdrCert.LastErrorText);
            return;
        }

    }

    certVault.AddCert(appleWwdrCert);
    crypt.UseCertVault(certVault);

    // Use a digital certificate and private key from a PFX
    var bdPfx = new chilkat.BinData();
    // Assume we loaded a PFX into bdPfx....
    var pfxPassword = "test123";

    var cert = new chilkat.Cert();
    success = cert.LoadPfxBd(bdPfx,pfxPassword);
    if (success == false) {
        console.log(cert.LastErrorText);
        return;
    }

    // Provide the signing cert (with associated private key).
    success = crypt.SetSigningCert(cert);
    if (success == false) {
        console.log(crypt.LastErrorText);
        return;
    }

    // Specify the signed attributes to be included.
    // (These attributes appear to not be necessary, but we're including
    // them just in case they become necessary in the future.)
    var jsonSignedAttrs = new chilkat.JsonObject();
    jsonSignedAttrs.UpdateInt("contentType",1);
    jsonSignedAttrs.UpdateInt("signingTime",1);
    crypt.SigningAttributes = jsonSignedAttrs.Emit();

    // Sign the manifest JSON to produce a signature
    crypt.EncodingMode = "base64";
    var sig = crypt.SignStringENC(manifest.Emit());
    var bdSig = new chilkat.BinData();
    bdSig.AppendEncoded(sig,"base64");
    zip.AddBd("signature",bdSig);

    // ---------------------------------------------------------------------------------------------
    // Note: Chilkat also has the capability to do everything in-memory (no files would be involved).  
    // If this is of interest, please send email to support@chilkatsoft.com
    // ---------------------------------------------------------------------------------------------

    // Create the .pkipass archive (which is a .zip archive containing the required files).
    // the .zip is written to bdZip
    var bdZip = new chilkat.BinData();
    success = zip.WriteBd(bdZip);
    if (success == false) {
        console.log(zip.LastErrorText);
        return;
    }

    console.log("Success.");

}

chilkatExample();