(Ruby) Sign Manifest File to Generate a Passbook .pkpass file

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

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

# Note: Requires Chilkat v9.5.0.75 or greater.

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

# ---------------------------------------------------------------------------------------------
# Note: Chilkat also has the capability to do everything in-memory (no files would be involved).  
# See this example:  Sign Manifest File to Generate a Passbook .pkpass in Memory
# ---------------------------------------------------------------------------------------------

# First create the manifest.json

manifest = Chilkat::CkJsonObject.new()
crypt = Chilkat::CkCrypt2.new()

zip = Chilkat::CkZip.new()
zip.NewZip("qa_data/p7s/pass-wallet/example.pkpass")
# Set the AppendFromDir property to prevent that relative paths from being stored in the .pkpass archive.
zip.put_AppendFromDir("qa_data/p7s/pass-wallet/")

crypt.put_HashAlgorithm("sha1")
# Return hashes as lowercase hex.
crypt.put_EncodingMode("hexlower")

filePath = "qa_data/p7s/pass-wallet/icon.png"
fileHash = crypt.hashFileENC(filePath)
zip.AppendOneFileOrDir("icon.png",false)
manifest.UpdateString("\"icon.png\"",fileHash)

filePath = "qa_data/p7s/pass-wallet/icon@2x.png"
fileHash = crypt.hashFileENC(filePath)
zip.AppendOneFileOrDir("icon@2x.png",false)
manifest.UpdateString("\"icon@2x.png\"",fileHash)

filePath = "qa_data/p7s/pass-wallet/logo.png"
fileHash = crypt.hashFileENC(filePath)
zip.AppendOneFileOrDir("logo.png",false)
manifest.UpdateString("\"logo.png\"",fileHash)

filePath = "qa_data/p7s/pass-wallet/logo@2x.png"
fileHash = crypt.hashFileENC(filePath)
zip.AppendOneFileOrDir("logo@2x.png",false)
manifest.UpdateString("\"logo@2x.png\"",fileHash)

filePath = "qa_data/p7s/pass-wallet/pass.json"
fileHash = crypt.hashFileENC(filePath)
zip.AppendOneFileOrDir("pass.json",false)
manifest.UpdateString("\"pass.json\"",fileHash)

sbJson = Chilkat::CkStringBuilder.new()
manifest.EmitSb(sbJson)
manifestPath = "qa_data/p7s/pass-wallet/manifest.json"
sbJson.WriteFile(manifestPath,"utf-8",false)
zip.AppendOneFileOrDir("manifest.json",false)

# Make sure we have the Apple WWDR intermediate certificate available for 
# the cert chain in the signature.
certVault = Chilkat::CkXmlCertVault.new()
appleWwdrCert = Chilkat::CkCert.new()
success = appleWwdrCert.LoadByCommonName("Apple Worldwide Developer Relations Certification Authority")
if (success != true)
    print "The Apple WWDR intermediate certificate is not installed." + "\n";
    print "It is available at https://developer.apple.com/certificationauthority/AppleWWDRCA.cer" + "\n";
    print "You may alternatively load the .cer like this..." + "\n";
    success = appleWwdrCert.LoadFromFile("qa_data/certs/AppleWWDRCA.cer")
    if (success != true)
        print appleWwdrCert.lastErrorText() + "\n";
        exit
    end

end

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

# Use a digital certificate and private key from a PFX file (.pfx or .p12).
pfxPath = "qa_data/pfx/cert_test123.pfx"
pfxPassword = "test123"

cert = Chilkat::CkCert.new()
success = cert.LoadPfxFile(pfxPath,pfxPassword)
if (success != true)
    print cert.lastErrorText() + "\n";
    exit
end

# Provide the signing cert (with associated private key).
success = crypt.SetSigningCert(cert)
if (success != true)
    print crypt.lastErrorText() + "\n";
    exit
end

# 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.)
jsonSignedAttrs = Chilkat::CkJsonObject.new()
jsonSignedAttrs.UpdateInt("contentType",1)
jsonSignedAttrs.UpdateInt("signingTime",1)
crypt.put_SigningAttributes(jsonSignedAttrs.emit())

# Sign the manifest JSON file to produce a file named "signature".
sigPath = "qa_data/p7s/pass-wallet/signature"

# Create the "signature" file.
success = crypt.CreateP7S(manifestPath,sigPath)
if (success == false)
    print crypt.lastErrorText() + "\n";
    exit
end

zip.AppendOneFileOrDir("signature",false)

# ---------------------------------------------------------------------------------------------
# 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).
success = zip.WriteZipAndClose()
if (success != true)
    print zip.lastErrorText() + "\n";
    exit
end

print "Success." + "\n";