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# encoding: UTF-8
require 'log4r'
require 'net/http'
require 'net/https'
require 'uri'
module Mauve
# Interface to the Bytemark calendar.
#
# Nota Bene that this does not include a chaching mechanism. Some caching
# is implemented in the Person object.
#
# @see Mauve::Person
# @author yann Golanski.
class CalendarInterface
class << self
def logger
@logger ||= Log4r::Logger.new(self.to_s)
end
# Gets a list of ssologin on support.
#
# Class method.
#
# @param [String] url A Calendar API url.
# @return [Array] A list of all the username on support.
def get_users_on_support(url)
result = do_get(url)
if result.is_a?(String)
result = result.split("\n")
else
result = []
end
return result
end
# Check to see if the user is on support.
#
# Class method.
#
# @param [String] url A Calendar API url.
# @param [String] usr User single sign on.
# @return [Boolean] True if on support, false otherwise.
def is_user_on_support?(url, usr)
return get_users_on_support(url).include?(usr)
end
# Check to see if the user is on holiday.
#
# Class method.
#
# @param [String] url A Calendar API url.
# @param [String] usr User single sign on.
# @return [Boolean] True if on holiday, false otherwise.
def is_user_on_holiday?(url, usr)
result = do_get(url)
if result.is_a?(String) and result =~ /^\d{4}(-\d\d){2}[ T](\d\d:){2}\d\d/
return result
else
return false
end
end
private
# Grab a URL from the wide web.
#
# @TODO: boot this in its own class since list of ips will need it too.
#
# @param [String] uri -- a URL
# @return [String or nil] -- the contents of the URI or nil if an error has been encountered.
#
def do_get (uri, limit = 11)
if 0 == limit
logger.warn("HTTP redirect too deep for #{uri}.")
return nil
end
begin
uri = URI.parse(uri) unless uri.is_a?(URI::HTTP)
raise ArgumentError, "#{uri_str.inspect} doesn't look like an HTTP uri" unless uri.is_a?(URI::HTTP)
http = Net::HTTP.new(uri.host, uri.port)
http.open_timeout = http.read_timeout = TIMEOUT
if (uri.scheme == "https")
http.use_ssl = true
http.verify_mode = OpenSSL::SSL::VERIFY_NONE
end
response = http.start { http.get(uri.request_uri()) }
if response.is_a?(Net::HTTPOK)
return response.body
elsif response.is_a?(Net::HTTPRedirection) and response.has_key?('Location')
location = response['Location']
#
# Bodge locations..
#
if location =~ /^\//
location = uri.class.build([uri.userinfo, uri.host, uri.port, nil, nil, nil]).to_s + location
end
return do_get(location, limit-1)
else
logger.warn("Request to #{uri.to_s} returned #{response.code} #{response.message}.")
return nil
end
rescue Timeout::Error => ex
logger.error("Time out reached during fetch of #{uri.to_s}.")
rescue StandardError => ex
logger.error("Time out reached during fetch of #{uri.to_s}.")
end
return nil
end
end
end
end
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