add CouchDB support.

6 files changed, 87 insertions, 14 deletions

diff --git a/lib/nickserver.rb b/lib/nickserver.rb
index 9ddc839..f97a95f 100644
--- a/lib/nickserver.rb
+++ b/lib/nickserver.rb
@@ -2,6 +2,8 @@
 require "nickserver/version"
 require "nickserver/config"
 
+require "nickserver/couch/fetch_key"
+
 require "nickserver/hkp/key_info"
 require "nickserver/hkp/fetch_key_info"
 require "nickserver/hkp/fetch_key"
diff --git a/lib/nickserver/config.rb b/lib/nickserver/config.rb
index 779f0a8..3f92186 100644
--- a/lib/nickserver/config.rb
+++ b/lib/nickserver/config.rb
@@ -12,6 +12,8 @@ module Nickserver
       attr_accessor :couch_port
       attr_accessor :couch_host
       attr_accessor :couch_database
+      attr_accessor :couch_user
+      attr_accessor :couch_password
       attr_accessor :port
       attr_accessor :loaded
     end
diff --git a/lib/nickserver/couch/fetch_key.rb b/lib/nickserver/couch/fetch_key.rb
new file mode 100644
index 0000000..d729ebc
--- /dev/null
+++ b/lib/nickserver/couch/fetch_key.rb
@@ -0,0 +1,62 @@
+require 'em-http'
+require 'json'
+
+module Nickserver; module Couch
+  class FetchKey
+    include EM::Deferrable
+
+    def initialize(options={})
+      @timeout = 5
+    end
+
+    def get(uid)
+      uid = uid.split('@').first # TEMPORARY HACK FOR NOW. in the future
+                                 # the database should be able to be searchable by full address
+      couch_request(uid)
+      self
+    end
+
+    protected
+
+    #
+    # curl http://localhost:5984/users/_design/User/_view/pgp_key_by_handle?key=%22bla%22\&reduce=false
+    #
+    def couch_request(uid)
+      query = {"reduce" => "false", "key" => "\"#{uid}\""}
+      request = EventMachine::HttpRequest.new("#{FetchKey.couch_url}/#{FetchKey.couch_view}").get(:timeout => @timeout, :query => query)
+      request.callback {|http|
+        if http.response_header.status != 200
+          self.fail http.response_header.status, 'Unknown Error'
+        else
+          self.succeed parse_key_from_response(uid, http.response)
+        end
+      }.errback {|http|
+        self.fail 0, http.error
+      }
+    end
+
+    def parse_key_from_response(uid, response)
+      json = JSON.load(response)
+      if json["offset"] == 0
+        self.fail 404, "Not Found"
+      else
+        return json["rows"].first["value"]
+      end
+    rescue Exception
+      self.fail 0, "Error parsing CouchDB reply"
+    end
+
+    def self.couch_view
+      "_design/User/_view/pgp_key_by_handle"
+    end
+
+    def self.couch_url
+      if Config.couch_user
+        ['http://', Config.couch_user, ':', Config.couch_password, '@', Config.couch_host, ':', Config.couch_port, '/', Config.couch_database].join
+      else
+        ['http://', Config.couch_host, ':', Config.couch_port, '/', Config.couch_database].join
+      end
+    end
+
+  end
+end; end
\ No newline at end of file
diff --git a/lib/nickserver/hkp/fetch_key.rb b/lib/nickserver/hkp/fetch_key.rb
index 211ae92..6f91d8c 100644
--- a/lib/nickserver/hkp/fetch_key.rb
+++ b/lib/nickserver/hkp/fetch_key.rb
@@ -16,8 +16,8 @@ module Nickserver; module HKP
         get_key_by_fingerprint(best.keyid) {|key|
           self.succeed key
         }
-      }.errback {|msg|
-        self.fail msg
+      }.errback {|status, msg|
+        self.fail status, msg
       }
       self
     end
@@ -30,13 +30,13 @@ module Nickserver; module HKP
       http = EventMachine::HttpRequest.new(Config.hkp_url).get(:query => params)
       http.callback {
         if http.response_header.status != 200
-          self.fail http.response_header.status #"Request failed with #{http.response_header.status}: #{http.response}"
+          self.fail http.response_header.status, "HKP Request failed"
         else
           yield http.response
         end
       }
       http.errback {
-        self.fail http.error
+        self.fail 0, http.error
       }
     end
 
diff --git a/lib/nickserver/hkp/fetch_key_info.rb b/lib/nickserver/hkp/fetch_key_info.rb
index dce0326..b341aad 100644
--- a/lib/nickserver/hkp/fetch_key_info.rb
+++ b/lib/nickserver/hkp/fetch_key_info.rb
@@ -17,12 +17,12 @@ module Nickserver; module HKP
       params = {:op => 'vindex', :search => uid, :exact => 'on', :options => 'mr', :fingerprint => 'on'}
       EventMachine::HttpRequest.new(Config.hkp_url).get(:query => params).callback {|http|
         if http.response_header.status != 200
-          self.fail http.response_header.status
+          self.fail http.response_header.status, "Could net fetch keyinfo"
         else
           self.succeed parse(uid, http.response)
         end
       }.errback {|http|
-        self.fail http.error
+        self.fail 0, http.error
       }
       self
     end
diff --git a/lib/nickserver/server.rb b/lib/nickserver/server.rb
index 7e79b98..0bda4f1 100644
--- a/lib/nickserver/server.rb
+++ b/lib/nickserver/server.rb
@@ -5,6 +5,8 @@ require 'json'
 #
 # This is the main HTTP server that clients connect to in order to fetch keys
 #
+# For info on EM::HttpServer, see https://github.com/eventmachine/evma_httpserver
+#
 module Nickserver
   class Server < EM::Connection
     include EM::HttpServer
@@ -43,7 +45,7 @@ module Nickserver
       send_response(:status => 500, :content => msg)
     end
 
-    def send_not_found(msg = "not found")
+    def send_not_found(msg = "404 Not Found")
       send_response(:status => 404, :content => msg)
     end
 
@@ -74,15 +76,20 @@ module Nickserver
     end
 
     def get_key_from_uid(uid)
-      if local_address?(uid)
-        send_not_found
+      fetcher = if local_address?(uid)
+        Nickserver::Couch::FetchKey.new
       else
-        Nickserver::HKP::FetchKey.new.get(uid).callback {|key|
-          yield key
-        }.errback {|status|
-          send_response(:status => status, :content => 'could not fetch key')
-        }
+        Nickserver::HKP::FetchKey.new
       end
+      fetcher.get(uid).callback {|key|
+        yield key
+      }.errback {|status, msg|
+        if status == 404
+          send_not_found
+        else
+          send_response(:status => status, :content => msg)
+        end
+      }
     end
 
     def format_response(map)