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require "hbc/checkable"
require "hbc/fetcher"
module Hbc
class UrlChecker
attr_accessor :cask, :response_status, :headers
include Checkable
def initialize(cask, fetcher = Fetcher)
@cask = cask
@fetcher = fetcher
@headers = {}
end
def summary_header
"url check result for #{cask}"
end
def run
_get_data_from_request
return if errors?
_check_response_status
end
HTTP_RESPONSES = [
"HTTP/1.0 200 OK",
"HTTP/1.1 200 OK",
"HTTP/1.1 302 Found",
].freeze
OK_RESPONSES = {
"http" => HTTP_RESPONSES,
"https" => HTTP_RESPONSES,
"ftp" => ["OK"],
}.freeze
def _check_response_status
ok = OK_RESPONSES[cask.url.scheme]
return if ok.include?(@response_status)
add_error "unexpected http response, expecting #{ok.map(&:utf8_inspect).join(" or ")}, got #{@response_status.utf8_inspect}"
end
def _get_data_from_request
response = @fetcher.head(cask.url)
if response.empty?
add_error "timeout while requesting #{cask.url}"
return
end
response_lines = response.split("\n").map(&:chomp)
case cask.url.scheme
when "http", "https" then
@response_status = response_lines.grep(/^HTTP/).last
if @response_status.respond_to?(:strip)
@response_status.strip!
unless response_lines.index(@response_status).nil?
http_headers = response_lines[(response_lines.index(@response_status) + 1)..-1]
http_headers.each do |line|
header_name, header_value = line.split(": ")
@headers[header_name] = header_value
end
end
end
when "ftp" then
@response_status = "OK"
response_lines.each do |line|
header_name, header_value = line.split(": ")
@headers[header_name] = header_value
end
else
add_error "unknown scheme for #{cask.url}"
end
end
end
end
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