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require "openid/message"
require "openid/fetchers"
module OpenID
# Exception that is raised when the server returns a 400 response
# code to a direct request.
class ServerError < OpenIDError
attr_reader :error_text, :error_code, :message
def initialize(error_text, error_code, message)
super(error_text)
@error_text = error_text
@error_code = error_code
@message = message
end
def self.from_message(msg)
error_text = msg.get_arg(OPENID_NS, 'error',
'<no error message supplied>')
error_code = msg.get_arg(OPENID_NS, 'error_code')
return self.new(error_text, error_code, msg)
end
end
class KVPostNetworkError < OpenIDError
end
class HTTPStatusError < OpenIDError
end
class Message
def self.from_http_response(response, server_url)
msg = self.from_kvform(response.body)
case response.code.to_i
when 200
return msg
when 206
return msg
when 400
raise ServerError.from_message(msg)
else
error_message = "bad status code from server #{server_url}: "\
"#{response.code}"
raise HTTPStatusError.new(error_message)
end
end
end
# Send the message to the server via HTTP POST and receive and parse
# a response in KV Form
def self.make_kv_post(request_message, server_url)
begin
http_response = self.fetch(server_url, request_message.to_url_encoded)
rescue Exception
raise KVPostNetworkError.new("Unable to contact OpenID server: #{$!.to_s}")
end
return Message.from_http_response(http_response, server_url)
end
end
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