Class: HttpRequest

Inherits:
Object
  • Object
show all
Includes:
Singleton
Defined in:
lib/http_request.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.ftp(method, options) ⇒ Object

for ftp



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# File 'lib/http_request.rb', line 134

def self.ftp(method, options)
  require 'net/ftp'
  options = {:close => true}.merge(options)
  options[:url] = "ftp://#{options[:url]}" unless options[:url] =~ /^ftp:\/\//
  uri = URI(options[:url])
  guest_name, guest_pass = 'anonymous', 'guest@' + uri.host
  unless options[:username]
    options[:username], options[:password] = uri.userinfo ? uri.userinfo.split(':') : [guest_name, guest_pass]
  end
  options[:username] = guest_user unless options[:username]
  options[:password] = guest_pass unless options[:password]
  ftp = Net::FTP.open(uri.host, options[:username], options[:password])
  return ftp unless method
  stat = case method.to_sym
         when :get
           options[:to] = File.basename(uri.path) unless options[:to]
           ftp.getbinaryfile(uri.path, options[:to])
         when :put
           ftp.putbinaryfile(options[:from], uri.path)
         when :mkdir, :rmdir, :delete, :size, :mtime, :list, :nlst
           ftp.method(method).call(uri.path)
         when :rename
           ftp.rename(uri.path, options[:to]) if options[:to]
         when :status
           ftp.status
         else
           return ftp
         end
  if options[:close]
    ftp.close
    stat
  else
    ftp.response = stat
    ftp
  end
end

.http_methods ⇒ Object 



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# File 'lib/http_request.rb', line 32

def self.http_methods
   %w{get head post put proppatch lock unlock options propfind delete move copy mkcol trace}
end

.method_missing(method_name, args) ⇒ Object

catch all of http requests

Raises:



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# File 'lib/http_request.rb', line 172

def self.method_missing(method_name, args)
	method_name = method_name.to_s.downcase
	raise NoHttpMethodException, "No such http method can be called: #{method_name}" unless self.http_methods.include?(method_name)
	self.instance.request(method_name, args)
end

Instance Method Details

#init_args(method, options) ⇒ Object

initialize



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# File 'lib/http_request.rb', line 37

def init_args(method, options)
	options = {:url => options.to_s} if [String, Array].include? options.class
	@options = {
		:ssl_port        => 443,
		:redirect_limits => 5,
		:redirect        => true,
		:url             => nil
	}
	@options.merge!(options)
	@uri = URI(@options[:url])
   @uri.path = '/' if @uri.path.empty?
	@headers = {
     'Host' => @uri.host,
     'Referer' => @options[:url],
     'Accept-Language' => 'en-us,zh-cn;q=0.7,en;q=0.3',
     'Accept-Charset' => 'zh-cn,zh;q=0.5',
     'Accept' => 'text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5',
     'Cache-Control' => 'max-age=0',
     'User-Agent' => 'Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.0.7) Gecko/2009030423 Ubuntu/8.04 (hardy) Firefox/3.0.7',
     'Connection' => 'keep-alive'
	}

   # Basic Authenication
   @headers['Authorization'] = "Basic " + [@uri.userinfo].pack('m').delete!("\r\n") if @uri.userinfo

   # headers
   @options[:headers].each {|k, v| @headers[k] = v} if @options[:headers].is_a? Hash

   # add cookies if have
   if @options[:cookies]
     if @options[:cookies].is_a? Hash
       cookies = []
       @options[:cookies].each {|k, v|
         cookies << "#{CGI.escape(k.to_s)}=#{CGI.escape(v.to_s)}"
       }
       cookies = cookies.join('; ')
     else
       cookies = @options[:cookies].to_s
     end
     @headers['Cookie'] = cookies unless cookies.empty?
   end

   @redirect_times = 0 if @options[:redirect]
end

#request(method, opt) ⇒ Object

send request



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# File 'lib/http_request.rb', line 83

def request(method, opt)
	init_args(method, opt)
	@options[:method] = method

   # for upload files
   if @options[:files].is_a?(Array) && 'post'.eql?(method)
     build_multipart
   else
     if @options[:parameters].is_a? Hash
       @options[:parameters] = @options[:parameters].collect{|k, v| 
         CGI.escape(k.to_s) + '=' + CGI.escape(v.to_s)
       }.join('&')
     end
   end

	http =  if @options[:proxy_addr]
     if @options[:proxy_user] and @options[:proxy_pass]
       Net::HTTP::Proxy(@options[:proxy_addr], @options[:proxy_port], @options[:proxy_user], @options[:proxy_pass]).new(@u.host, @u.port)
     else
       Net::HTTP::Proxy(@options[:proxy_addr], @options[:proxy_port]).new(@uri.host, @uri.port)
     end
   else
     Net::HTTP.new(@uri.host, @uri.port)
   end

	# ssl support
	http.use_ssl = true if @uri.scheme =~ /^https$/i

	# get data by post or get method.
	response = send_request http

	return response unless @options[:redirect]

	# redirect....===>>>
	case response
	when Net::HTTPRedirection
		@options[:url] = if response['location'] =~ /^http[s]*:\/\//i
       response['location']
     else
       @uri.scheme + '://' + @uri.host + ':' + @uri.port.to_s + response['location']
     end
		@redirect_times = 0 unless @redirect_times
		@redirect_times = @redirect_times.succ
		raise 'too deep redirect...' if @redirect_times > @options[:redirect_limits]
		request('get', @options)
	else
		response
	end
end