feature: keep trying if no Host header given

So far we would error out if no host was specified in the config or
the request. It's true that we can't do local lookup if we don't
know our own domain. However we can still use HKP.

In the future we will query leaps own API for other providers. If the
host was not set in the initial request we might even proxy a request to
ourselves. Providing the Host header will prevent an infinite loop in
that case.

4 files changed, 57 insertions, 50 deletions

diff --git a/lib/nickserver/request_handlers/local_email_handler.rb b/lib/nickserver/request_handlers/local_email_handler.rb
index 1f2abc2..9e8ed48 100644
--- a/lib/nickserver/request_handlers/local_email_handler.rb
+++ b/lib/nickserver/request_handlers/local_email_handler.rb
@@ -9,7 +9,6 @@ module Nickserver
       def call(request)
         return nil unless request.email
         domain = Config.domain || request.domain
-        return missing_domain_response if domain.nil? || domain == ''
         email = EmailAddress.new(request.email)
         return nil unless email.domain?(domain)
         source.query email
@@ -17,16 +16,10 @@ module Nickserver
 
       protected
 
-      attr_reader :domain
-
       def source
         Nickserver::CouchDB::Source.new
       end
 
-      def missing_domain_response
-        ErrorResponse.new "HTTP request must include a Host header."
-      end
-
     end
   end
 end
diff --git a/test/integration/dispatcher_test.rb b/test/integration/dispatcher_test.rb
index 60d252b..4ec823b 100644
--- a/test/integration/dispatcher_test.rb
+++ b/test/integration/dispatcher_test.rb
@@ -15,16 +15,12 @@ class Nickserver::DispatcherTest < Minitest::Test
 
   def test_missing_domain
     handle address: ['valid@email.tld']
-    assert_response status: 500, content: "500 HTTP request must include a Host header.\n"
+    assert_response_from_hkp
   end
 
   def test_email_from_hkp
     handle address: ['valid@email.tld'], headers: { "Host" => "http://nickserver.me" }
-    source = Minitest::Mock.new
-    source.expect :query, Nickserver::Response.new(200, "fake content"), [Nickserver::EmailAddress]
-    Nickserver::Hkp::Source.stub :new, source do
-      assert_response status: 200, content: "200 fake content"
-    end
+    assert_response_from_hkp
   end
 
   def test_fingerprint_to_short
@@ -62,6 +58,14 @@ class Nickserver::DispatcherTest < Minitest::Test
     responder.verify
   end
 
+  def assert_response_from_hkp
+    source = Minitest::Mock.new
+    source.expect :query, Nickserver::Response.new(200, "fake content"), [Nickserver::EmailAddress]
+    Nickserver::Hkp::Source.stub :new, source do
+      assert_response status: 200, content: "200 fake content"
+    end
+  end
+
   def dispatcher
     Nickserver::Dispatcher.new responder
   end
diff --git a/test/support/request_handler_test_helper.rb b/test/support/request_handler_test_helper.rb
new file mode 100644
index 0000000..3ca89ba
--- /dev/null
+++ b/test/support/request_handler_test_helper.rb
@@ -0,0 +1,39 @@
+module RequestHandlerTestHelper
+
+  protected
+
+  def assert_refuses(opts = {})
+    assert_nil handle(request(opts))
+  end
+
+  def assert_handles(opts = {})
+    assert handle(request(opts))
+  end
+
+  def assert_queries_for(*query_args, &block)
+    source_class.stub :new, source_expecting_query_for(*query_args), &block
+  end
+
+  def source_expecting_query_for(*query_args)
+    source = Minitest::Mock.new
+    source.expect :query, 'response', query_args
+    source
+  end
+
+  def assert_responds_with_error(msg, opts)
+    response = handle(request(opts))
+    assert_equal 500, response.status
+    assert_equal "500 #{msg}\n", response.content
+  end
+
+  def handle(request)
+    handler.call(request)
+  end
+
+  def request(opts = {})
+    params = {'address' => [opts[:email]]}
+    headers = {'Host' => opts[:domain]}
+    Nickserver::Request.new params, headers
+  end
+
+end
diff --git a/test/unit/request_handlers/local_email_handler_test.rb b/test/unit/request_handlers/local_email_handler_test.rb
index 8f303ec..1bfe264 100644
--- a/test/unit/request_handlers/local_email_handler_test.rb
+++ b/test/unit/request_handlers/local_email_handler_test.rb
@@ -1,7 +1,9 @@
 require 'test_helper'
+require 'support/request_handler_test_helper'
 require 'nickserver/request_handlers/local_email_handler'
 
 class LocalEmailHandlerTest < MiniTest::Test
+  include RequestHandlerTestHelper
 
   def test_no_email
     assert_refuses
@@ -12,14 +14,13 @@ class LocalEmailHandlerTest < MiniTest::Test
   end
 
   def test_local_email
-    assert_handles email: 'me@local.tld', domain: 'local.tld'
+    assert_queries_for Nickserver::EmailAddress do
+      assert_handles email: 'me@local.tld', domain: 'local.tld'
+    end
   end
 
   def test_missing_host_header
-    Nickserver::Config.stub :domain, nil do
-      assert_responds_with_error "HTTP request must include a Host header.",
-        email: 'me@local.tld'
-    end
+    assert_refuses email: 'me@local.tld'
   end
 
   protected
@@ -28,38 +29,8 @@ class LocalEmailHandlerTest < MiniTest::Test
     Nickserver::RequestHandlers::LocalEmailHandler.new
   end
 
-  def source
-    source = Minitest::Mock.new
-    source.expect :query,
-      'response',
-      [Nickserver::EmailAddress]
-    source
-  end
-
-  def assert_handles(opts)
-    Nickserver::CouchDB::Source.stub :new, source do
-      assert_equal 'response', handle(request(opts))
-    end
-  end
-
-  def assert_responds_with_error(msg, opts)
-    response = handle(request(opts))
-    assert_equal 500, response.status
-    assert_equal "500 #{msg}\n", response.content
-  end
-
-  def assert_refuses(opts = {})
-    assert_nil handle(request(opts))
-  end
-
-  def handle(request)
-    handler.call(request)
-  end
-
-  def request(opts = {})
-    params = {'address' => [opts[:email]]}
-    headers = {'Host' => opts[:domain]}
-    Nickserver::Request.new params, headers
+  def source_class
+    Nickserver::CouchDB::Source
   end
 
 end