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crazy mega refactor

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This commit is contained in:
Yura
2026-05-04 03:16:40 -07:00
parent 55c1d347e6
commit 6d96e2d159
11 changed files with 686 additions and 616 deletions
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317
test/CompileTests.hs
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@@ -22,6 +22,9 @@ tests = testGroup "Compile"
, layerStrippingTests
, continueTests
, configTests
, filterInjectionTests
, portforwardCompileTests
, masqueradeCompileTests
]
-- ─── Helpers ─────────────────────────────────────────────────────────────────
@@ -60,23 +63,16 @@ withKey k = filter (\v -> case at [k] v of Just _ -> True; _ -> False)
jsonStructureTests :: TestTree
jsonStructureTests = testGroup "JSON structure"
[ testCase "output is valid JSON" $ do
_ <- compileToValue
"policy output : Frame \
\ on { hook = Output, table = Filter, priority = Filter } \
\ = { | _ -> Allow; };"
_ <- compileToValue "policy output : Frame hook Output = { | _ -> Allow; };"
return ()
, testCase "top-level nftables array present" $ do
v <- compileToValue "policy output : Frame \
\ on { hook = Output, table = Filter, priority = Filter } \
\ = { | _ -> Allow; };"
v <- compileToValue "policy output : Frame hook Output = { | _ -> Allow; };"
_ <- nftArr v
return ()
, testCase "metainfo is first element" $ do
v <- compileToValue "policy output : Frame \
\ on { hook = Output, table = Filter, priority = Filter } \
\ = { | _ -> Allow; };"
v <- compileToValue "policy output : Frame hook Output = { | _ -> Allow; };"
arr <- nftArr v
case arr of
(first:_) -> case at ["metainfo"] first of
@@ -85,17 +81,13 @@ jsonStructureTests = testGroup "JSON structure"
[] -> assertFailure "Empty nftables array"
, testCase "table object present" $ do
v <- compileToValue "policy output : Frame \
\ on { hook = Output, table = Filter, priority = Filter } \
\ = { | _ -> Allow; };"
v <- compileToValue "policy output : Frame hook Output = { | _ -> Allow; };"
arr <- nftArr v
assertBool "Expected at least one table object"
(not (null (withKey "table" arr)))
, testCase "default table name is fwl" $ do
v <- compileToValue "policy output : Frame \
\ on { hook = Output, table = Filter, priority = Filter } \
\ = { | _ -> Allow; };"
v <- compileToValue "policy output : Frame hook Output = { | _ -> Allow; };"
arr <- nftArr v
case withKey "table" arr of
(t:_) -> at ["table","name"] t @?= Just (A.String "fwl")
@@ -104,9 +96,7 @@ jsonStructureTests = testGroup "JSON structure"
, testCase "custom table name respected" $ do
v <- compileToValue
"config { table = \"custom\"; } \
\policy output : Frame \
\ on { hook = Output, table = Filter, priority = Filter } \
\ = { | _ -> Allow; };"
\policy output : Frame hook Output = { | _ -> Allow; };"
arr <- nftArr v
case withKey "table" arr of
(t:_) -> at ["table","name"] t @?= Just (A.String "custom")
@@ -118,60 +108,42 @@ jsonStructureTests = testGroup "JSON structure"
chainTests :: TestTree
chainTests = testGroup "chain declarations"
[ testCase "filter input chain has correct hook" $ do
v <- compileToValue
"policy input : Frame \
\ on { hook = Input, table = Filter, priority = Filter } \
\ = { | _ -> Drop; };"
v <- compileToValue "policy input : Frame hook Input = { | _ -> Drop; };"
arr <- nftArr v
case withKey "chain" arr of
(c:_) -> at ["chain","hook"] c @?= Just (A.String "input")
[] -> assertFailure "No chain"
, testCase "filter chain type is filter" $ do
v <- compileToValue
"policy fwd : Frame \
\ on { hook = Forward, table = Filter, priority = Filter } \
\ = { | _ -> Drop; };"
v <- compileToValue "policy fwd : Frame hook Forward = { | _ -> Drop; };"
arr <- nftArr v
case withKey "chain" arr of
(c:_) -> at ["chain","type"] c @?= Just (A.String "filter")
[] -> assertFailure "No chain"
, testCase "NAT chain type is nat" $ do
v <- compileToValue
"policy nat_post : Frame \
\ on { hook = Postrouting, table = NAT, priority = SrcNat } \
\ = { | _ -> Allow; };"
v <- compileToValue "policy nat_post : Frame hook Postrouting = { | _ -> Allow; };"
arr <- nftArr v
case withKey "chain" arr of
(c:_) -> at ["chain","type"] c @?= Just (A.String "nat")
[] -> assertFailure "No chain"
, testCase "input chain default policy is drop" $ do
v <- compileToValue
"policy input : Frame \
\ on { hook = Input, table = Filter, priority = Filter } \
\ = { | _ -> Drop; };"
v <- compileToValue "policy input : Frame hook Input = { | _ -> Drop; };"
arr <- nftArr v
case withKey "chain" arr of
(c:_) -> at ["chain","policy"] c @?= Just (A.String "drop")
[] -> assertFailure "No chain"
, testCase "output chain default policy is accept" $ do
v <- compileToValue
"policy output : Frame \
\ on { hook = Output, table = Filter, priority = Filter } \
\ = { | _ -> Allow; };"
v <- compileToValue "policy output : Frame hook Output = { | _ -> Allow; };"
arr <- nftArr v
case withKey "chain" arr of
(c:_) -> at ["chain","policy"] c @?= Just (A.String "accept")
[] -> assertFailure "No chain"
, testCase "chain name matches policy name" $ do
v <- compileToValue
"policy my_input : Frame \
\ on { hook = Input, table = Filter, priority = Filter } \
\ = { | _ -> Drop; };"
v <- compileToValue "policy my_input : Frame hook Input = { | _ -> Drop; };"
arr <- nftArr v
case withKey "chain" arr of
(c:_) -> at ["chain","name"] c @?= Just (A.String "my_input")
@@ -179,12 +151,8 @@ chainTests = testGroup "chain declarations"
, testCase "two policies produce two chains" $ do
v <- compileToValue
"policy input : Frame \
\ on { hook = Input, table = Filter, priority = Filter } \
\ = { | _ -> Drop; }; \
\policy output : Frame \
\ on { hook = Output, table = Filter, priority = Filter } \
\ = { | _ -> Allow; };"
"policy input : Frame hook Input = { | _ -> Drop; }; \
\policy output : Frame hook Output = { | _ -> Allow; };"
arr <- nftArr v
length (withKey "chain" arr) @?= 2
]
@@ -199,29 +167,14 @@ ruleExprs arr =
ruleExprTests :: TestTree
ruleExprTests = testGroup "rule expressions"
[ testCase "two arms produce two rules" $ do
[ testCase "arm without guard produces rule" $ do
v <- compileToValue
"policy input : Frame \
\ on { hook = Input, table = Filter, priority = Filter } \
\ = { | _ if ct.state in { Established, Related } -> Allow; \
\ | _ -> Drop; \
\ };"
"policy output : Frame hook Output = { | _ -> Allow; };"
arr <- nftArr v
length (withKey "rule" arr) @?= 2
, testCase "arm without guard produces one rule" $ do
v <- compileToValue
"policy output : Frame \
\ on { hook = Output, table = Filter, priority = Filter } \
\ = { | _ -> Allow; };"
arr <- nftArr v
length (withKey "rule" arr) @?= 1
assertBool "Should have at least one rule" (not (null (withKey "rule" arr)))
, testCase "rule expr array is present" $ do
v <- compileToValue
"policy output : Frame \
\ on { hook = Output, table = Filter, priority = Filter } \
\ = { | _ -> Allow; };"
v <- compileToValue "policy output : Frame hook Output = { | _ -> Allow; };"
arr <- nftArr v
case withKey "rule" arr of
(r:_) -> case at ["rule","expr"] r of
@@ -231,10 +184,9 @@ ruleExprTests = testGroup "rule expressions"
, testCase "IPv4 ctor emits nfproto match" $ do
v <- compileToValue
"policy input : Frame \
\ on { hook = Input, table = Filter, priority = Filter } \
\ = { | Frame(_, IPv4(ip, _)) -> Allow; \
\ | _ -> Drop; \
"policy input : Frame hook Input = \
\ { | Frame(_, IPv4(ip, _)) -> Allow; \
\ | _ -> Drop; \
\ };"
arr <- nftArr v
let matches = withKey "match" (ruleExprs arr)
@@ -245,10 +197,9 @@ ruleExprTests = testGroup "rule expressions"
, testCase "record field pat emits payload match" $ do
v <- compileToValue
"policy input : Frame \
\ on { hook = Input, table = Filter, priority = Filter } \
\ = { | Frame(_, TCP(tcp { dport = :22 }, _)) -> Allow; \
\ | _ -> Drop; \
"policy input : Frame hook Input = \
\ { | Frame(_, TCP(tcp { dport = :22 }, _)) -> Allow; \
\ | _ -> Drop; \
\ };"
arr <- nftArr v
let matches = withKey "match" (ruleExprs arr)
@@ -269,28 +220,19 @@ allExprs arr =
verdictTests :: TestTree
verdictTests = testGroup "verdicts"
[ testCase "Allow compiles to accept" $ do
v <- compileToValue
"policy output : Frame \
\ on { hook = Output, table = Filter, priority = Filter } \
\ = { | _ -> Allow; };"
v <- compileToValue "policy output : Frame hook Output = { | _ -> Allow; };"
arr <- nftArr v
assertBool "Expected accept verdict"
(not (null (withKey "accept" (allExprs arr))))
, testCase "Drop compiles to drop" $ do
v <- compileToValue
"policy input : Frame \
\ on { hook = Input, table = Filter, priority = Filter } \
\ = { | _ -> Drop; };"
v <- compileToValue "policy input : Frame hook Input = { | _ -> Drop; };"
arr <- nftArr v
assertBool "Expected drop verdict"
(not (null (withKey "drop" (allExprs arr))))
, testCase "Masquerade compiles to masquerade" $ do
v <- compileToValue
"policy nat_post : Frame \
\ on { hook = Postrouting, table = NAT, priority = SrcNat } \
\ = { | _ -> Masquerade; };"
v <- compileToValue "policy nat_post : Frame hook Postrouting = { | _ -> Masquerade; };"
arr <- nftArr v
assertBool "Expected masquerade verdict"
(not (null (withKey "masquerade" (allExprs arr))))
@@ -298,9 +240,7 @@ verdictTests = testGroup "verdicts"
, testCase "rule call compiles to jump" $ do
v <- compileToValue
"rule blockAll : Frame -> Action = \\f -> case f of { | _ -> Drop; }; \
\policy fwd : Frame \
\ on { hook = Forward, table = Filter, priority = Filter } \
\ = { | frame -> blockAll(frame); };"
\policy fwd : Frame hook Forward = { | frame -> blockAll(frame); };"
arr <- nftArr v
assertBool "Expected jump verdict for rule call"
(not (null (withKey "jump" (allExprs arr))))
@@ -312,16 +252,14 @@ layerStrippingTests :: TestTree
layerStrippingTests = testGroup "layer stripping"
[ testCase "Frame with and without Ether both emit nfproto match" $ do
let withEther =
"policy p1 : Frame \
\ on { hook = Input, table = Filter, priority = Filter } \
\ = { | Frame(_, Ether(_, IPv4(ip, _))) -> Allow; \
\ | _ -> Drop; \
"policy p1 : Frame hook Input = \
\ { | Frame(_, Ether(_, IPv4(ip, _))) -> Allow; \
\ | _ -> Drop; \
\ };"
withoutEther =
"policy p1 : Frame \
\ on { hook = Input, table = Filter, priority = Filter } \
\ = { | Frame(_, IPv4(ip, _)) -> Allow; \
\ | _ -> Drop; \
"policy p1 : Frame hook Input = \
\ { | Frame(_, IPv4(ip, _)) -> Allow; \
\ | _ -> Drop; \
\ };"
v1 <- compileToValue withEther
v2 <- compileToValue withoutEther
@@ -338,22 +276,11 @@ layerStrippingTests = testGroup "layer stripping"
continueTests :: TestTree
continueTests = testGroup "Continue"
[ testCase "two terminal arms produce two rules" $ do
[ testCase "non-Continue arms still produce rules" $ do
v <- compileToValue
"policy fwd : Frame \
\ on { hook = Forward, table = Filter, priority = Filter } \
\ = { | _ if ct.state in { Established } -> Allow; \
\ | _ -> Drop; \
\ };"
arr <- nftArr v
length (withKey "rule" arr) @?= 2
, testCase "non-Continue arms still produce rules" $ do
v <- compileToValue
"policy input : Frame \
\ on { hook = Input, table = Filter, priority = Filter } \
\ = { | _ if ct.state in { Established } -> Allow; \
\ | _ -> Drop; \
"policy input : Frame hook Input = \
\ { | _ if ct.state in { Established } -> Allow; \
\ | _ -> Drop; \
\ };"
arr <- nftArr v
assertBool "Should have rules for non-Continue arms"
@@ -365,20 +292,166 @@ continueTests = testGroup "Continue"
configTests :: TestTree
configTests = testGroup "config"
[ testCase "all rule objects reference correct table" $ do
v <- compileToValue
"policy input : Frame \
\ on { hook = Input, table = Filter, priority = Filter } \
\ = { | _ -> Drop; };"
v <- compileToValue "policy input : Frame hook Input = { | _ -> Drop; };"
arr <- nftArr v
mapM_ (\r -> at ["rule","table"] r @?= Just (A.String "fwl"))
(withKey "rule" arr)
, testCase "chain objects reference correct table" $ do
v <- compileToValue
"policy input : Frame \
\ on { hook = Input, table = Filter, priority = Filter } \
\ = { | _ -> Drop; };"
v <- compileToValue "policy input : Frame hook Input = { | _ -> Drop; };"
arr <- nftArr v
mapM_ (\c -> at ["chain","table"] c @?= Just (A.String "fwl"))
(withKey "chain" arr)
]
-- ─── Filter-hook injection tests ─────────────────────────────────────────────
filterInjectionTests :: TestTree
filterInjectionTests = testGroup "filter hook injections"
[ testCase "Input chain first rule is stateful ct state" $ do
v <- compileToValue "policy input : Frame hook Input = { | _ -> Drop; };"
arr <- nftArr v
let rules = withKey "rule" arr
inputRules = filter (\r -> at ["rule","chain"] r == Just (A.String "input")) rules
case inputRules of
(r:_) -> case at ["rule","expr","0","match","left","ct","key"] r of
Just (A.String "state") -> return ()
_ -> case at ["rule","expr"] r of
Just (A.Array es) ->
let exprs = V.toList es
hasState = any (\e -> at ["match","left","ct","key"] e == Just (A.String "state")) exprs
in assertBool "First rule should have ct state match" hasState
_ -> assertFailure "No expr in first rule"
[] -> assertFailure "No rules for input chain"
, testCase "Input chain has loopback rule (iifname lo)" $ do
v <- compileToValue "policy input : Frame hook Input = { | _ -> Drop; };"
arr <- nftArr v
let rules = withKey "rule" arr
inputRules = filter (\r -> at ["rule","chain"] r == Just (A.String "input")) rules
hasLo = any (\r ->
case at ["rule","expr"] r of
Just (A.Array es) -> any (\e ->
at ["match","right"] e == Just (A.String "lo")) (V.toList es)
_ -> False) inputRules
assertBool "Input chain should have iifname lo rule" hasLo
, testCase "Forward chain first rule is stateful ct state" $ do
v <- compileToValue "policy forward : Frame hook Forward = { | _ -> Drop; };"
arr <- nftArr v
let rules = withKey "rule" arr
fwdRules = filter (\r -> at ["rule","chain"] r == Just (A.String "forward")) rules
case fwdRules of
(r:_) -> case at ["rule","expr"] r of
Just (A.Array es) ->
let hasState = any (\e -> at ["match","left","ct","key"] e == Just (A.String "state")) (V.toList es)
in assertBool "First forward rule should have ct state match" hasState
_ -> assertFailure "No expr"
[] -> assertFailure "No rules for forward chain"
, testCase "Output chain has stateful rule but no loopback" $ do
v <- compileToValue "policy output : Frame hook Output = { | _ -> Allow; };"
arr <- nftArr v
let rules = withKey "rule" arr
outRules = filter (\r -> at ["rule","chain"] r == Just (A.String "output")) rules
hasState = any (\r ->
case at ["rule","expr"] r of
Just (A.Array es) -> any (\e -> at ["match","left","ct","key"] e == Just (A.String "state")) (V.toList es)
_ -> False) outRules
hasLo = any (\r ->
case at ["rule","expr"] r of
Just (A.Array es) -> any (\e -> at ["match","right"] e == Just (A.String "lo")) (V.toList es)
_ -> False) outRules
assertBool "Output chain should have ct state rule" hasState
assertBool "Output chain should NOT have loopback rule" (not hasLo)
]
-- ─── PortForward compile tests ───────────────────────────────────────────────
portforwardCompileTests :: TestTree
portforwardCompileTests = testGroup "portforward compilation"
[ testCase "portforward produces a map object with the decl name" $ do
v <- compileToValue
"portforward wan_forwards on wan via Map<(Protocol, Port), (IPv4, Port)> = { \
\ (tcp, :8080) -> (10.0.0.10, :80) \
\}; \
\policy forward : Frame hook Forward = { | _ -> Drop; };"
arr <- nftArr v
let maps = withKey "map" arr
named = filter (\m -> at ["map","name"] m == Just (A.String "wan_forwards")) maps
assertBool "Should have a map named wan_forwards" (not (null named))
, testCase "portforward produces prerouting chain" $ do
v <- compileToValue
"portforward wan_forwards on wan via Map<(Protocol, Port), (IPv4, Port)> = { \
\ (tcp, :8080) -> (10.0.0.10, :80) \
\}; \
\policy forward : Frame hook Forward = { | _ -> Drop; };"
arr <- nftArr v
let chains = withKey "chain" arr
preChain = filter (\c ->
at ["chain","name"] c == Just (A.String "wan_forwards_prerouting")) chains
assertBool "Should have wan_forwards_prerouting chain" (not (null preChain))
case preChain of
(c:_) -> do
at ["chain","type"] c @?= Just (A.String "nat")
at ["chain","hook"] c @?= Just (A.String "prerouting")
[] -> return ()
, testCase "portforward injects ct status dnat accept into Forward chain" $ do
v <- compileToValue
"portforward wan_forwards on wan via Map<(Protocol, Port), (IPv4, Port)> = { \
\ (tcp, :8080) -> (10.0.0.10, :80) \
\}; \
\policy forward : Frame hook Forward = { | _ -> Drop; };"
arr <- nftArr v
let rules = withKey "rule" arr
fwdRules = filter (\r -> at ["rule","chain"] r == Just (A.String "forward")) rules
hasDnat = any (\r ->
case at ["rule","expr"] r of
Just (A.Array es) -> any (\e ->
at ["match","left","ct","key"] e == Just (A.String "status")) (V.toList es)
_ -> False) fwdRules
assertBool "Forward chain should have ct status dnat rule when portforward present" hasDnat
]
-- ─── Masquerade compile tests ────────────────────────────────────────────────
masqueradeCompileTests :: TestTree
masqueradeCompileTests = testGroup "masquerade compilation"
[ testCase "masquerade produces postrouting chain" $ do
v <- compileToValue
"let rfc1918 : Set<IPv4> = { 10.0.0.0/8 }; \
\masquerade wan_snat on wan src rfc1918;"
arr <- nftArr v
let chains = withKey "chain" arr
postChain = filter (\c ->
at ["chain","name"] c == Just (A.String "wan_snat_postrouting")) chains
assertBool "Should have wan_snat_postrouting chain" (not (null postChain))
case postChain of
(c:_) -> do
at ["chain","type"] c @?= Just (A.String "nat")
at ["chain","hook"] c @?= Just (A.String "postrouting")
[] -> return ()
, testCase "masquerade rule has oifname match and masquerade verdict" $ do
v <- compileToValue
"let rfc1918 : Set<IPv4> = { 10.0.0.0/8 }; \
\masquerade wan_snat on wan src rfc1918;"
arr <- nftArr v
let rules = withKey "rule" arr
snatRules = filter (\r ->
at ["rule","chain"] r == Just (A.String "wan_snat_postrouting")) rules
hasOifname = any (\r ->
case at ["rule","expr"] r of
Just (A.Array es) -> any (\e ->
at ["match","left","meta","key"] e == Just (A.String "oifname")) (V.toList es)
_ -> False) snatRules
hasMasq = any (\r ->
case at ["rule","expr"] r of
Just (A.Array es) -> any (\e ->
at ["masquerade"] e /= Nothing) (V.toList es)
_ -> False) snatRules
assertBool "Masquerade rule should match oifname" hasOifname
assertBool "Masquerade rule should have masquerade verdict" hasMasq
]