extract gpg functionality to lib class

1 files changed, 32 insertions, 0 deletions

diff --git a/lib/gitlab/gpg.rb b/lib/gitlab/gpg.rb
new file mode 100644
index 00000000000..373ef79ab85
--- /dev/null
+++ b/lib/gitlab/gpg.rb
@@ -0,0 +1,32 @@
+module Gitlab
+  module Gpg
+    extend self
+
+    def fingerprints_from_key(key)
+      using_tmp_keychain do
+        import = GPGME::Key.import(key)
+
+        return [] if import.imported == 0
+
+        import.imports.map(&:fingerprint)
+      end
+    end
+
+    def using_tmp_keychain
+      Dir.mktmpdir do |dir|
+        @original_dirs ||= [GPGME::Engine.dirinfo('homedir')]
+        @original_dirs.push(dir)
+
+        GPGME::Engine.home_dir = dir
+
+        return_value = yield
+
+        @original_dirs.pop
+
+        GPGME::Engine.home_dir = @original_dirs[-1]
+
+        return_value
+      end
+    end
+  end
+end