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require 'nickserver/response'
require 'nickserver/hkp/response'
#
# Fetch keys via HKP
# http://tools.ietf.org/html/draft-shaw-openpgp-hkp-00
#
module Nickserver; module Hkp
class Source
def initialize(adapter)
@adapter = adapter
end
def query(nick, &block)
FetchKeyInfo.new.search(nick).callback {|key_info_list|
best = pick_best_key(key_info_list)
get_key_by_fingerprint(nick, best.keyid, &block)
}.errback {|status, msg|
yield Nickserver::Response.new(status, msg)
}
end
#
# fetches ascii armored OpenPGP public key from the keyserver
#
def get_key_by_fingerprint(nick, key_id)
params = {op: 'get', search: "0x" + key_id, exact: 'on', options: 'mr'}
http = EventMachine::HttpRequest.new(Config.hkp_url).get(query: params)
http.callback {
status = http.response_header.status
if status != 200
yield Nickserver::Response.new status, "HKP Request failed"
else
yield Response.new nick, http.response
end
}
http.errback {
yield Nickserver::Response.new 500, http.error
}
end
protected
#
# for now, just pick the newest key.
#
# in the future, we should perhaps pick the newest key
# that is signed by the oldest key.
#
def pick_best_key(key_info_list)
key_info_list.sort {|a,b| a.creationdate <=> b.creationdate}.last
end
end
end; end
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