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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
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