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author | Diego Louzán <diego.louzan.ext@siemens.com> | 2019-07-10 22:40:28 +0300 |
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committer | Diego Louzán <diego.louzan.ext@siemens.com> | 2019-08-20 17:13:32 +0300 |
commit | 0dcb9d21efc1db97765d82ee39a0f0905ba945ba (patch) | |
tree | 48b0fa42bbe0186e28758ba496f45ef11972aed6 /spec/support | |
parent | d8966abd20c860d2f30141f3647f2b81f70b683d (diff) |
feat: SMIME signed notification emails
- Add mail interceptor the signs outgoing email with SMIME
- Add lib and helpers to work with SMIME data
- New configuration params for setting up SMIME key and cert files
Diffstat (limited to 'spec/support')
-rw-r--r-- | spec/support/helpers/smime_helper.rb | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/spec/support/helpers/smime_helper.rb b/spec/support/helpers/smime_helper.rb new file mode 100644 index 00000000000..656b3e196ba --- /dev/null +++ b/spec/support/helpers/smime_helper.rb @@ -0,0 +1,55 @@ +module SmimeHelper + include OpenSSL + + INFINITE_EXPIRY = 1000.years + SHORT_EXPIRY = 30.minutes + + def generate_root + issue(signed_by: nil, expires_in: INFINITE_EXPIRY, certificate_authority: true) + end + + def generate_cert(root_ca:, expires_in: SHORT_EXPIRY) + issue(signed_by: root_ca, expires_in: expires_in, certificate_authority: false) + end + + # returns a hash { key:, cert: } containing a generated key, cert pair + def issue(email_address: 'test@example.com', signed_by:, expires_in:, certificate_authority:) + key = OpenSSL::PKey::RSA.new(4096) + public_key = key.public_key + + subject = if certificate_authority + X509::Name.parse("/CN=EU") + else + X509::Name.parse("/CN=#{email_address}") + end + + cert = X509::Certificate.new + cert.subject = subject + + cert.issuer = signed_by&.fetch(:cert, nil)&.subject || subject + + cert.not_before = Time.now + cert.not_after = expires_in.from_now + cert.public_key = public_key + cert.serial = 0x0 + cert.version = 2 + + extension_factory = X509::ExtensionFactory.new + if certificate_authority + extension_factory.subject_certificate = cert + extension_factory.issuer_certificate = cert + cert.add_extension(extension_factory.create_extension('subjectKeyIdentifier', 'hash')) + cert.add_extension(extension_factory.create_extension('basicConstraints', 'CA:TRUE', true)) + cert.add_extension(extension_factory.create_extension('keyUsage', 'cRLSign,keyCertSign', true)) + else + cert.add_extension(extension_factory.create_extension('subjectAltName', "email:#{email_address}", false)) + cert.add_extension(extension_factory.create_extension('basicConstraints', 'CA:FALSE', true)) + cert.add_extension(extension_factory.create_extension('keyUsage', 'digitalSignature,keyEncipherment', true)) + cert.add_extension(extension_factory.create_extension('extendedKeyUsage', 'clientAuth,emailProtection', false)) + end + + cert.sign(signed_by&.fetch(:key, nil) || key, Digest::SHA256.new) + + { key: key, cert: cert } + end +end |