Add a rake task to update SSL Certificates.

Added a rake task under rubygems namespace that updates the SSL
certificates in bundler if they meet either of the following criteria:

a) The filenames do not match that of the certificates in Rubygems
   master
b) Rubygems contains an updated certificate

1 files changed, 41 insertions, 0 deletions

diff --git a/lib/bundler/ssl_certs/certificate_manager.rb b/lib/bundler/ssl_certs/certificate_manager.rb
new file mode 100644
index 00000000..74850722
--- /dev/null
+++ b/lib/bundler/ssl_certs/certificate_manager.rb
@@ -0,0 +1,41 @@
+class CertificateManager
+  BUNDLER_CERTIFICATES_PATH = "lib/bundler/ssl_certs/"
+  LOCAL_RUBYGEMS_PATH = "tmp/rubygems"
+  RUBYGEMS_CERTIFICATES_PATH = "#{File.join(LOCAL_RUBYGEMS_PATH, 'lib/rubygems/ssl_certs/')}"
+  CERTIFICATE_FILE_EXTENSION = ".pem"
+
+  attr_reader :bundler_certificates, :rubygems_certificates
+
+  def initialize
+    @bundler_certificates = certificate_files(BUNDLER_CERTIFICATES_PATH)
+    @rubygems_certificates = certificate_files(RUBYGEMS_CERTIFICATES_PATH)
+  end
+
+  def up_to_date?
+    same_filenames = (bundler_certificates == rubygems_certificates)
+    same_certificates = false
+
+    if same_filenames
+      same_certificates = bundler_certificates.all? do |filename|
+        FileUtils.compare_file(File.join(BUNDLER_CERTIFICATES_PATH, filename), File.join(RUBYGEMS_CERTIFICATES_PATH, filename))
+      end
+    end
+
+    same_filenames && same_certificates
+  end
+
+  def update!
+    unless up_to_date?
+      FileUtils.rm Dir.glob(File.join(BUNDLER_CERTIFICATES_PATH, "*#{CERTIFICATE_FILE_EXTENSION}"))
+      FileUtils.cp_r Dir.glob(File.join(RUBYGEMS_CERTIFICATES_PATH, "*#{CERTIFICATE_FILE_EXTENSION}")), BUNDLER_CERTIFICATES_PATH
+    end
+  end
+
+  private
+
+  def certificate_files(path)
+    Dir.entries(path).select do |filename|
+      filename.end_with?(CERTIFICATE_FILE_EXTENSION)
+    end.sort
+  end
+end