From fcbf63e62c627deae76c1b8cb8c0876c536ed811 Mon Sep 17 00:00:00 2001
From: Jari Vetoniemi <jari.vetoniemi@indooratlas.com>
Date: Mon, 16 Mar 2020 18:49:26 +0900
Subject: Fresh start

---
 jni/ruby/lib/rubygems/security/policies.rb | 115 +++++++++++++++++++++++++++++
 1 file changed, 115 insertions(+)
 create mode 100644 jni/ruby/lib/rubygems/security/policies.rb

(limited to 'jni/ruby/lib/rubygems/security/policies.rb')

diff --git a/jni/ruby/lib/rubygems/security/policies.rb b/jni/ruby/lib/rubygems/security/policies.rb
new file mode 100644
index 0000000..a976eca
--- /dev/null
+++ b/jni/ruby/lib/rubygems/security/policies.rb
@@ -0,0 +1,115 @@
+module Gem::Security
+
+  ##
+  # No security policy: all package signature checks are disabled.
+
+  NoSecurity = Policy.new(
+    'No Security',
+    :verify_data      => false,
+    :verify_signer    => false,
+    :verify_chain     => false,
+    :verify_root      => false,
+    :only_trusted     => false,
+    :only_signed      => false
+  )
+
+  ##
+  # AlmostNo security policy: only verify that the signing certificate is the
+  # one that actually signed the data.  Make no attempt to verify the signing
+  # certificate chain.
+  #
+  # This policy is basically useless. better than nothing, but can still be
+  # easily spoofed, and is not recommended.
+
+  AlmostNoSecurity = Policy.new(
+    'Almost No Security',
+    :verify_data      => true,
+    :verify_signer    => false,
+    :verify_chain     => false,
+    :verify_root      => false,
+    :only_trusted     => false,
+    :only_signed      => false
+  )
+
+  ##
+  # Low security policy: only verify that the signing certificate is actually
+  # the gem signer, and that the signing certificate is valid.
+  #
+  # This policy is better than nothing, but can still be easily spoofed, and
+  # is not recommended.
+
+  LowSecurity = Policy.new(
+    'Low Security',
+    :verify_data      => true,
+    :verify_signer    => true,
+    :verify_chain     => false,
+    :verify_root      => false,
+    :only_trusted     => false,
+    :only_signed      => false
+  )
+
+  ##
+  # Medium security policy: verify the signing certificate, verify the signing
+  # certificate chain all the way to the root certificate, and only trust root
+  # certificates that we have explicitly allowed trust for.
+  #
+  # This security policy is reasonable, but it allows unsigned packages, so a
+  # malicious person could simply delete the package signature and pass the
+  # gem off as unsigned.
+
+  MediumSecurity = Policy.new(
+    'Medium Security',
+    :verify_data      => true,
+    :verify_signer    => true,
+    :verify_chain     => true,
+    :verify_root      => true,
+    :only_trusted     => true,
+    :only_signed      => false
+  )
+
+  ##
+  # High security policy: only allow signed gems to be installed, verify the
+  # signing certificate, verify the signing certificate chain all the way to
+  # the root certificate, and only trust root certificates that we have
+  # explicitly allowed trust for.
+  #
+  # This security policy is significantly more difficult to bypass, and offers
+  # a reasonable guarantee that the contents of the gem have not been altered.
+
+  HighSecurity = Policy.new(
+    'High Security',
+    :verify_data      => true,
+    :verify_signer    => true,
+    :verify_chain     => true,
+    :verify_root      => true,
+    :only_trusted     => true,
+    :only_signed      => true
+  )
+
+  ##
+  # Policy used to verify a certificate and key when signing a gem
+
+  SigningPolicy = Policy.new(
+    'Signing Policy',
+    :verify_data      => false,
+    :verify_signer    => true,
+    :verify_chain     => true,
+    :verify_root      => true,
+    :only_trusted     => false,
+    :only_signed      => false
+  )
+
+  ##
+  # Hash of configured security policies
+
+  Policies = {
+    'NoSecurity'       => NoSecurity,
+    'AlmostNoSecurity' => AlmostNoSecurity,
+    'LowSecurity'      => LowSecurity,
+    'MediumSecurity'   => MediumSecurity,
+    'HighSecurity'     => HighSecurity,
+    # SigningPolicy is not intended for use by `gem -P` so do not list it
+  }
+
+end
+
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