Class: XRealIp::Middleware

Inherits:
Object
  • Object
show all
Defined in:
lib/x-real-ip/middleware.rb

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ Middleware

Returns a new instance of Middleware.



3
4
5
 
# File 'lib/x-real-ip/middleware.rb', line 3

def initialize(app)
  @app = app
end

Instance Method Details

#call(env) ⇒ Object 



16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
 
# File 'lib/x-real-ip/middleware.rb', line 16

def call(env)
  real_ips  = env["HTTP_X_REAL_IP"]
  if real_ips
    proxies = []
    list = real_ips.split(',')
    return @app.call(env) if list.empty?
    begin
      list.push env["REMOTE_ADDR"]
      while tmp = list.pop
        addr = tmp
        if is_trusted?(tmp)
          proxies.push tmp
        else
          break
        end
      end
      
      if addr
        env["x.proxies"] = proxies.join(',')
        env["REMOTE_ADDR"] = addr
        proto = env["HTTP_X_FORWARDED_PROTO"] || env['HTTP_X_REAL_PROTO']
        if (proto && proto == 'https')
          env["rack.url_scheme"] = 'https'
        end
      end
    rescue => e
      $stderr.puts "Error in x-real-ip: #{$!}"
      $stderr.puts "Backtrace:\n\t#{e.backtrace.join("\n\t")}"
    end
  end
  @app.call(env)
end

#is_trusted?(str) ⇒ Boolean

Returns:

  • (Boolean) 


7
8
9
10
11
12
13
14
 
# File 'lib/x-real-ip/middleware.rb', line 7

def is_trusted?(str)
  ip = IPAddr.new(str)
  if ip.ipv4?
    XRealIp.trusted4.include?(ip.to_s)
  else
    XRealIp.trusted6.include?(ip.to_s)
  end
end