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-rw-r--r--lib/nickserver/dispatcher.rb65
-rw-r--r--lib/nickserver/error_response.rb11
-rw-r--r--lib/nickserver/invalid_source.rb14
-rw-r--r--lib/nickserver/lookup.rb31
-rw-r--r--lib/nickserver/reel_server.rb4
-rw-r--r--lib/nickserver/request.rb30
-rw-r--r--lib/nickserver/request_handler.rb95
-rw-r--r--lib/nickserver/request_handlers/email_handler.rb22
-rw-r--r--lib/nickserver/request_handlers/fingerprint_handler.rb27
-rw-r--r--lib/nickserver/request_handlers/invalid_email_handler.rb15
-rw-r--r--lib/nickserver/request_handlers/local_email_handler.rb32
-rw-r--r--lib/nickserver/source.rb3
12 files changed, 205 insertions, 144 deletions
diff --git a/lib/nickserver/dispatcher.rb b/lib/nickserver/dispatcher.rb
new file mode 100644
index 0000000..8bcfd05
--- /dev/null
+++ b/lib/nickserver/dispatcher.rb
@@ -0,0 +1,65 @@
+#
+# Dispatcher
+#
+# Dispatch a request so it get's handled by the correct handler.
+#
+# The dispatcher hands a request to one handler after the other until one of
+# them responds.
+#
+# This is similar to the Chain of Responsibility patter but we iterate over the
+# 'handler_chain' array instead of a linked list.
+#
+# To change the order of handlers or add other handlers change the array in the
+# handler_chain function.
+#
+
+require 'nickserver/request'
+require 'nickserver/request_handlers/invalid_email_handler'
+require 'nickserver/request_handlers/local_email_handler'
+require 'nickserver/request_handlers/email_handler'
+require 'nickserver/request_handlers/fingerprint_handler'
+
+module Nickserver
+ class Dispatcher
+
+ def initialize(responder)
+ @responder = responder
+ end
+
+ def respond_to(params, headers)
+ request = Nickserver::Request.new params, headers
+ response = handle request
+ send_response response.status, response.content
+ end
+
+ protected
+
+ def handle(request)
+ handler_chain.each do |handler|
+ response = handler.call request
+ return response if response
+ end
+ rescue RuntimeError => exc
+ puts "Error: #{exc}"
+ puts exc.backtrace
+ ErrorResponse.new(exc.to_s)
+ end
+
+ def handler_chain
+ [
+ RequestHandlers::InvalidEmailHandler.new,
+ RequestHandlers::LocalEmailHandler.new,
+ RequestHandlers::EmailHandler.new,
+ RequestHandlers::FingerprintHandler.new,
+ Proc.new { Nickserver::Response.new(404, "Not Found\n") }
+ ]
+ end
+
+ def send_response(status = 200, content = '')
+ responder.respond status, content
+ end
+
+ attr_reader :responder
+
+ end
+end
diff --git a/lib/nickserver/error_response.rb b/lib/nickserver/error_response.rb
new file mode 100644
index 0000000..1065e4e
--- /dev/null
+++ b/lib/nickserver/error_response.rb
@@ -0,0 +1,11 @@
+require 'nickserver/response'
+
+module Nickserver
+ class ErrorResponse < Nickserver::Response
+ def initialize(message)
+ @status = 500
+ @message = message + "\n"
+ end
+
+ end
+end
diff --git a/lib/nickserver/invalid_source.rb b/lib/nickserver/invalid_source.rb
deleted file mode 100644
index dac245a..0000000
--- a/lib/nickserver/invalid_source.rb
+++ /dev/null
@@ -1,14 +0,0 @@
-#
-# This is a dummy source for invalid queries.
-# It simply always returns 500 and "Not a valid address"
-#
-
-module Nickserver
- class InvalidSource
-
- def query(nick)
- yield 500, "Not a valid address"
- end
-
- end
-end
diff --git a/lib/nickserver/lookup.rb b/lib/nickserver/lookup.rb
deleted file mode 100644
index 105e77e..0000000
--- a/lib/nickserver/lookup.rb
+++ /dev/null
@@ -1,31 +0,0 @@
-require 'nickserver/invalid_source'
-
-module Nickserver
- class Lookup
-
- attr_reader :nick
-
- def initialize(nick)
- @nick = nick
- end
-
- def respond_with(responder)
- query do |status, content|
- responder.send_response status: status, content: content
- end
- end
-
- protected
-
- def query(&block)
- source.query nick, &block
- end
-
- def source
- if nick.invalid? then Nickserver::InvalidSource
- elsif nick.local? then Nickserver::Config.local_source
- else Nickserver::Config.remote_source
- end
- end
- end
-end
diff --git a/lib/nickserver/reel_server.rb b/lib/nickserver/reel_server.rb
index 6f05e0b..b681577 100644
--- a/lib/nickserver/reel_server.rb
+++ b/lib/nickserver/reel_server.rb
@@ -2,7 +2,7 @@ silence_warnings do
require 'reel'
end
require 'nickserver/adapters/celluloid_http'
-require 'nickserver/request_handler'
+require 'nickserver/dispatcher'
module Nickserver
class ReelServer < Reel::Server::HTTP
@@ -32,7 +32,7 @@ module Nickserver
protected
def handler_for(request)
- RequestHandler.new(request, Nickserver::Adapters::CelluloidHttp.new)
+ Dispatcher.new(request)
end
def params(request)
diff --git a/lib/nickserver/request.rb b/lib/nickserver/request.rb
new file mode 100644
index 0000000..c21c280
--- /dev/null
+++ b/lib/nickserver/request.rb
@@ -0,0 +1,30 @@
+module Nickserver
+ class Request
+ def initialize(params, headers)
+ @params = params || {}
+ @headers = headers
+ end
+
+ def email
+ param("address")
+ end
+
+ def fingerprint
+ param("fingerprint")
+ end
+
+ def domain
+ host_header = headers['Host'] || ''
+ domain_part = host_header.split(':')[0] || ''
+ domain_part.strip.sub(/^nicknym\./, '')
+ end
+
+ protected
+
+ def param(key)
+ params[key] && params[key].first
+ end
+
+ attr_reader :params, :headers
+ end
+end
diff --git a/lib/nickserver/request_handler.rb b/lib/nickserver/request_handler.rb
deleted file mode 100644
index 856ec5d..0000000
--- a/lib/nickserver/request_handler.rb
+++ /dev/null
@@ -1,95 +0,0 @@
-require 'nickserver/hkp/source'
-require 'nickserver/couch_db/source'
-
-module Nickserver
- class RequestHandler
-
- def initialize(responder, adapter)
- @responder = responder
- @adapter = adapter
- end
-
- def respond_to(params, headers)
- if params && params["address"] && params["address"].any?
- by_email(params, headers)
- elsif params && params["fingerprint"] && params["fingerprint"].any?
- by_fingerprint(params)
- else
- send_not_found
- end
-
- rescue RuntimeError => exc
- puts "Error: #{exc}"
- puts exc.backtrace
- send_error(exc.to_s)
- end
-
- protected
-
- def by_email(params, headers)
- email = EmailAddress.new(params["address"].first)
- if email.invalid?
- send_error("Not a valid address")
- else
- send_key(email, headers)
- end
- end
-
- def by_fingerprint(params)
- fingerprint = params["fingerprint"].first
- if fingerprint.length == 40 && !fingerprint[/\H/]
- source = Nickserver::Hkp::Source.new(adapter)
- key_response = source.get_key_by_fingerprint(fingerprint)
- send_response key_response.status, key_response.content
- else
- send_error('Fingerprint invalid: ' + fingerprint)
- end
- end
-
- def send_key(email, headers)
- if local_address?(email, headers)
- source = Nickserver::CouchDB::Source.new(adapter)
- else
- source = Nickserver::Hkp::Source.new(adapter)
- end
- response = source.query(email)
- send_response response.status, response.content
- rescue MissingHostHeader
- send_error("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, headers)
- email.domain?(Config.domain || domain_from_headers(headers))
- end
-
- # no domain configured, use Host header
- def domain_from_headers(headers)
- host_header = headers['Host']
- raise MissingHostHeader if host_header.nil?
- host_header.split(':')[0].strip.sub(/^nicknym\./, '')
- end
-
- def send_error(msg = "not supported")
- send_response 500, "500 #{msg}\n"
- end
-
- def send_not_found(msg = "Not Found")
- send_response 404, "404 #{msg}\n"
- end
-
- def send_response(status = 200, content = '')
- responder.respond status, content
- end
-
- attr_reader :responder, :adapter
-
- class MissingHostHeader < StandardError
- end
- end
-end
diff --git a/lib/nickserver/request_handlers/email_handler.rb b/lib/nickserver/request_handlers/email_handler.rb
new file mode 100644
index 0000000..96fcaf3
--- /dev/null
+++ b/lib/nickserver/request_handlers/email_handler.rb
@@ -0,0 +1,22 @@
+require 'nickserver/email_address'
+require 'nickserver/hkp/source'
+
+module Nickserver
+ module RequestHandlers
+ class EmailHandler
+
+ def call(request)
+ return unless request.email
+ email = EmailAddress.new(request.email)
+ source.query(email)
+ end
+
+ protected
+
+ def source
+ Nickserver::Hkp::Source.new
+ end
+
+ 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..3c04fcd
--- /dev/null
+++ b/lib/nickserver/request_handlers/fingerprint_handler.rb
@@ -0,0 +1,27 @@
+require 'nickserver/hkp/source'
+require 'nickserver/error_response'
+
+module Nickserver
+ module RequestHandlers
+ class FingerprintHandler
+
+ def call(request)
+ return unless request.fingerprint
+ handle_request(request)
+ end
+
+ protected
+
+ def handle_request(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
diff --git a/lib/nickserver/request_handlers/invalid_email_handler.rb b/lib/nickserver/request_handlers/invalid_email_handler.rb
new file mode 100644
index 0000000..eaf8156
--- /dev/null
+++ b/lib/nickserver/request_handlers/invalid_email_handler.rb
@@ -0,0 +1,15 @@
+require 'nickserver/email_address'
+require 'nickserver/error_response'
+
+module Nickserver
+ module RequestHandlers
+ class InvalidEmailHandler
+ def call(request)
+ return unless request.email
+ email = EmailAddress.new(request.email)
+ ErrorResponse.new("Not a valid address") if email.invalid?
+ end
+
+ end
+ end
+end
diff --git a/lib/nickserver/request_handlers/local_email_handler.rb b/lib/nickserver/request_handlers/local_email_handler.rb
new file mode 100644
index 0000000..1f2abc2
--- /dev/null
+++ b/lib/nickserver/request_handlers/local_email_handler.rb
@@ -0,0 +1,32 @@
+require 'nickserver/email_address'
+require 'nickserver/error_response'
+require 'nickserver/couch_db/source'
+
+module Nickserver
+ module RequestHandlers
+ class LocalEmailHandler
+
+ 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
+ end
+
+ 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/lib/nickserver/source.rb b/lib/nickserver/source.rb
index b8135da..78f245b 100644
--- a/lib/nickserver/source.rb
+++ b/lib/nickserver/source.rb
@@ -1,13 +1,12 @@
module Nickserver
class Source
- def initialize(adapter)
+ def initialize(adapter = Nickserver::Adapters::CelluloidHttp.new)
@adapter = adapter
end
protected
attr_reader :adapter
-
end
end
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-05 14:32:42 +0000