1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
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
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
{-# LANGUAGE BangPatterns #-}
{-# LANGUAGE OverloadedStrings #-}
module Snap.Util.Proxy.Tests (tests) where
------------------------------------------------------------------------------
import Control.Monad.State hiding (get)
import Data.ByteString.Char8 (ByteString)
import qualified Data.ByteString.Char8 as S
import Data.CaseInsensitive (CI(..))
import qualified Data.Map as Map
import Test.Framework
import Test.Framework.Providers.HUnit
import Test.HUnit hiding (Test, path)
------------------------------------------------------------------------------
import Snap.Core hiding (setHeader)
import Snap.Test
import Snap.Test.Common
import Snap.Util.Proxy
------------------------------------------------------------------------------
------------------------------------------------------------------------------
tests :: [Test]
tests = [ testNoProxy
, testForwardedFor
, testTrivials
]
---------------
-- Constants --
---------------
------------------------------------------------------------------------------
initialPort :: Int
initialPort = 9999
initialAddr :: ByteString
initialAddr = "127.0.0.1"
-----------
-- Tests --
-----------
------------------------------------------------------------------------------
testNoProxy :: Test
testNoProxy = testCase "proxy/no-proxy" $ do
a <- evalHandler (mkReq $ forwardedFor [("4.3.2.1", Nothing)])
(behindProxy NoProxy reportRemoteAddr)
p <- evalHandler (mkReq $ forwardedFor [("4.3.2.1", Nothing)])
(behindProxy NoProxy reportRemotePort)
assertEqual "NoProxy leaves request alone" initialAddr a
assertEqual "NoProxy leaves request alone" initialPort p
--------------------------------------------------------------------------
b <- evalHandler (mkReq $ xForwardedFor [("4.3.2.1", Nothing)])
(behindProxy NoProxy reportRemoteAddr)
assertEqual "NoProxy leaves request alone" initialAddr b
--------------------------------------------------------------------------
c <- evalHandler (mkReq $ return ())
(behindProxy NoProxy reportRemoteAddr)
assertEqual "NoProxy leaves request alone" initialAddr c
------------------------------------------------------------------------------
testForwardedFor :: Test
testForwardedFor = testCase "proxy/forwarded-for" $ do
(a,p) <- evalHandler (mkReq $ return ()) handler
assertEqual "No Forwarded-For, no change" initialAddr a
assertEqual "port" initialPort p
--------------------------------------------------------------------------
(b,_) <- evalHandler (mkReq $ forwardedFor addr) handler
assertEqual "Behind 5.6.7.8" ip b
--------------------------------------------------------------------------
(c,q) <- evalHandler (mkReq $ xForwardedFor addrs2) handler
assertEqual "Behind 5.6.7.8" ip c
assertEqual "port change" port q
where
handler = behindProxy X_Forwarded_For $ do
!a <- reportRemoteAddr
!p <- reportRemotePort
return $! (a,p)
ip = "5.6.7.8"
port = 10101
addr = [ (ip, Nothing) ]
addr2 = [ (ip, Just port) ]
addrs2 = [("4.3.2.1", Just 20202)] ++ addr2
------------------------------------------------------------------------------
testTrivials :: Test
testTrivials = testCase "proxy/trivials" $ do
coverShowInstance NoProxy
coverReadInstance NoProxy
coverEqInstance NoProxy
coverOrdInstance NoProxy
---------------
-- Functions --
---------------
------------------------------------------------------------------------------
mkReq :: RequestBuilder IO () -> RequestBuilder IO ()
mkReq m = do
get "/" Map.empty
modify $ \req -> req { rqRemoteAddr = initialAddr
, rqRemotePort = initialPort
}
m
------------------------------------------------------------------------------
reportRemoteAddr :: Snap ByteString
reportRemoteAddr = withRequest $ \req -> return $ rqRemoteAddr req
------------------------------------------------------------------------------
reportRemotePort :: Snap Int
reportRemotePort = withRequest $ \req -> return $ rqRemotePort req
------------------------------------------------------------------------------
forwardedFor' :: CI ByteString -- ^ header name
-> [(ByteString, Maybe Int)] -- ^ list of "forwarded-for"
-> RequestBuilder IO ()
forwardedFor' hdr addrs = do
setHeader hdr out
where
toStr (a, Nothing) = a
toStr (a, Just p ) = S.concat [ a, ":", S.pack $ show p ]
out = S.intercalate ", " $ map toStr addrs
------------------------------------------------------------------------------
forwardedFor :: [(ByteString, Maybe Int)]
-> RequestBuilder IO ()
forwardedFor = forwardedFor' "Forwarded-For"
------------------------------------------------------------------------------
xForwardedFor :: [(ByteString, Maybe Int)]
-> RequestBuilder IO ()
xForwardedFor = forwardedFor' "X-Forwarded-For"
|
