From 58d687f927aabc8aa2fdfc46132cb71706bdde46 Mon Sep 17 00:00:00 2001
From: Azul <azul@riseup.net>
Date: Mon, 29 Aug 2016 09:41:12 +0200
Subject: refactor: split up ResponseHandler

Now we have a Dispatcher and two ResponseHandlers that have the same interface.

Moving towards a Chain of Responsibility pattern.
---
 lib/nickserver/request_handlers/email_handler.rb   | 49 ++++++++++++++++++++++
 .../request_handlers/fingerprint_handler.rb        | 20 +++++++++
 2 files changed, 69 insertions(+)
 create mode 100644 lib/nickserver/request_handlers/email_handler.rb
 create mode 100644 lib/nickserver/request_handlers/fingerprint_handler.rb

(limited to 'lib/nickserver/request_handlers')

diff --git a/lib/nickserver/request_handlers/email_handler.rb b/lib/nickserver/request_handlers/email_handler.rb
new file mode 100644
index 0000000..3f7515d
--- /dev/null
+++ b/lib/nickserver/request_handlers/email_handler.rb
@@ -0,0 +1,49 @@
+require 'nickserver/email_address'
+require 'nickserver/error_response'
+require 'nickserver/hkp/source'
+require 'nickserver/couch_db/source'
+
+module Nickserver
+  module RequestHandlers
+    class EmailHandler
+
+      def call(request)
+        email = EmailAddress.new(request.email)
+        if email.invalid?
+          ErrorResponse.new("Not a valid address")
+        else
+          send_key(email, request)
+        end
+      end
+
+      protected
+
+      def send_key(email, request)
+        if local_address?(email, request)
+          source = Nickserver::CouchDB::Source.new
+        else
+          source = Nickserver::Hkp::Source.new
+        end
+        source.query(email)
+      rescue MissingHostHeader
+        ErrorResponse.new("HTTP request must include a Host header.")
+      end
+
+      #
+      # Return true if the user address is for a user of this service provider.
+      # e.g. if the provider is example.org, then alice@example.org returns true.
+      #
+      # If 'domain' is not configured, we rely on the Host header of the HTTP request.
+      #
+      def local_address?(email, request)
+        domain = Config.domain || request.domain
+        raise MissingHostHeader if domain == ''
+        email.domain? domain
+      end
+    end
+
+
+    class MissingHostHeader < StandardError
+    end
+  end
+end
diff --git a/lib/nickserver/request_handlers/fingerprint_handler.rb b/lib/nickserver/request_handlers/fingerprint_handler.rb
new file mode 100644
index 0000000..3202c41
--- /dev/null
+++ b/lib/nickserver/request_handlers/fingerprint_handler.rb
@@ -0,0 +1,20 @@
+require 'nickserver/hkp/source'
+require 'nickserver/error_response'
+
+module Nickserver
+  module RequestHandlers
+    class FingerprintHandler
+
+      def call(request)
+        fingerprint = request.fingerprint
+        if fingerprint.length == 40 && !fingerprint[/\H/]
+          source = Nickserver::Hkp::Source.new
+          source.get_key_by_fingerprint(fingerprint)
+        else
+          ErrorResponse.new('Fingerprint invalid: ' + fingerprint)
+        end
+      end
+
+    end
+  end
+end
-- 
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