mail-reports (empty) → 0.1.0.0

raw patch · 5 files changed

+979/−0 lines, 5 filesdep +basedep +bytestringdep +mtlsetup-changed

Dependencies added: base, bytestring, mtl, resourcet, streaming, streaming-bytestring, streaming-utils, text, time, xml, zip-archive

Files

• CHANGELOG.md +5/−0
• LICENSE +661/−0
• Setup.hs +2/−0
• mail-reports.cabal +40/−0
• src/Data/Mail/DMARC/Reports.hs +271/−0

@@ -0,0 +1,5 @@+# Revision history for mail-reports++## 0.1.0.0 -- 2020-12-19++First version, parsing DMARC aggregated reports.

@@ -0,0 +1,661 @@+    GNU AFFERO GENERAL PUBLIC LICENSE+                       Version 3, 19 November 2007++ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>+ Everyone is permitted to copy and distribute verbatim copies+ of this license document, but changing it is not allowed.++                            Preamble++  The GNU Affero General Public License is a free, copyleft license for+software and other kinds of works, specifically designed to ensure+cooperation with the community in the case of network server software.++  The licenses for most software and other practical works are designed+to take away your freedom to share and change the works.  By contrast,+our General Public Licenses are intended to guarantee your freedom to+share and change all versions of a program--to make sure it remains free+software for all its users.++  When we speak of free software, we are referring to freedom, not+price.  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@@ -0,0 +1,2 @@+import Distribution.Simple+main = defaultMain

@@ -0,0 +1,40 @@+cabal-version:       >=1.10+-- Initial package description 'dmarc.cabal' generated by 'cabal init'.+-- For further documentation, see http://haskell.org/cabal/users-guide/++name:                mail-reports+version:             0.1.0.0+synopsis:            A parser library for DMARC reports+description:         This library is meant to parse DMARC aggregated reports from bytestrings, XML documents or streaming bytestrings.+-- bug-reports:+license:             AGPL-3+license-file:        LICENSE+author:              Enum Cohrs+maintainer:          enum@doomanddarkness.eu+-- copyright:+category:            Mail+build-type:          Simple+extra-source-files:  CHANGELOG.md++source-repository head+  type: darcs+  location: https://hub.darcs.net/enum/mail-reports+                     +library+  exposed-modules:     Data.Mail.DMARC.Reports+  -- other-modules:+  -- other-extensions:+  build-depends:       base >=4.13 && <4.14,+                       streaming-bytestring,+                       zip-archive,+                       streaming-utils,+                       streaming,+                       bytestring,+                       xml,+                       resourcet,+                       text,+                       time,+                       mtl+                       +  hs-source-dirs:      src+  default-language:    Haskell2010

@@ -0,0 +1,271 @@+{-# LANGUAGE OverloadedStrings, FlexibleContexts, RecordWildCards #-}++-- | Utilities for parsing a DMARC aggregated report, following RFC 7489++module Data.Mail.DMARC.Reports (+  -- * Parsers+  dmarcFeedbackFromStrict,+  dmarcFeedbackFromLazy,+  dmarcFeedbackFromStream,+  dmarcFeedbackFromXml,+  -- * Data types+  Feedback(..),+  ReportMetadata(..),+  Record(..),+  Row(..),+  PolicyPublished(..),+  PolicyEvaluated(..),+  DkimAuth(..),+  SpfAuth(..),+  AuthResult(..),+  IpAddress,+  AlignmentMode(..),+  PolicyAction(..),+  -- * Utility+  uncompressStream+  ) where++import Streaming+import Streaming.Zip+import qualified Streaming.Prelude as S+import qualified Streaming.ByteString as Q+import qualified Data.ByteString.Lazy as L+import qualified Data.ByteString as B+import qualified Codec.Archive.Zip as Z+import Control.Monad.IO.Class+import Control.Monad.Trans+import Control.Monad.Trans.Resource+import Text.XML.Light+import Text.Read (readMaybe)+import Data.Time.Clock+import Data.Time.Format+import Data.Maybe+import qualified Data.Text as T+import System.IO.Unsafe++-- | Uncompress gzip or pkzip stream. If it is neither gzipped or pkzipped, return the stream unmodified.+uncompressStream :: (MonadFail m, MonadIO m) => Q.ByteStream m r -> Q.ByteStream m ()+uncompressStream stream = do+  magic <- lift $ Q.toStrict_ $ Q.take 2 stream+  if magic == "PK"+    then pkunzip stream+    else if magic == "\x1F\x8b"+         then void $ gunzip stream+         else void stream+  where pkunzip stream = do+          lbs <- lift $ Q.toLazy_ stream+          let a = Z.toArchive lbs+          case Z.zEntries a of+            [] -> lift $ fail "Empty PKZip archive :("+            (e:_) -> Q.fromLazy $ Z.fromEntry e++data ReportMetadata = ReportMetadata {+  rmOrgName :: Maybe T.Text,+  rmEmail :: Maybe T.Text,+  rmExtraContactInfo :: Maybe T.Text,+  rmReportId :: Maybe Integer,+  rmDateRange :: Maybe (UTCTime, UTCTime)+  } deriving (Eq,Show,Read)++data AlignmentMode = Strict | Relaxed deriving (Eq)++instance Show AlignmentMode where+  show Strict = "s"+  show Relaxed = "r"++instance Read AlignmentMode where+  readsPrec _ r =+    [(Strict,s) | ("s",s) <- lex r]+    ++[(Relaxed,s) | ("r",s) <- lex r]++data PolicyAction = NoPolicy+                  | Quarantine+                  | Reject deriving (Eq)++instance Show PolicyAction where+  show NoPolicy = "none"+  show Quarantine = "quarantine"+  show Reject = "reject"++instance Read PolicyAction where+  readsPrec _ r =+    [(NoPolicy,s) | ("none",s) <- lex r]+    ++[(Quarantine,s) | ("quarantine",s) <- lex r]+    ++[(Reject,s) | ("reject",s) <- lex r]+  +data PolicyPublished = PolicyPublished {+  ppDomain :: T.Text,+  ppDkimAlignment :: AlignmentMode,+  ppSpfAlignment :: AlignmentMode,+  ppPolicy :: PolicyAction,+  ppSubdomainPolicy :: PolicyAction,+  ppPercent :: Int+  } deriving (Eq,Show,Read)++data AuthResult = NoAuth    -- ^ no policy published+                | AuthPass  -- ^ successful authentication+                | AuthFail  -- ^ authentication failed+                | TempError -- ^ temporary error in resolving the policy+                | PermError -- ^ permanent error in resolving the policy+                | AuthNeutral -- ^ ??? (DKIM only)+                | AuthPolicy  -- ^ ??? (DKIM only)+                | SoftFail  -- ^ auth failed, but won't reject (SPF only)+                deriving (Eq)++instance Show AuthResult where+  show NoAuth = "none"+  show AuthPass = "pass"+  show AuthFail = "fail"+  show TempError = "temperror"+  show PermError = "permerror"+  show AuthNeutral = "neutral"+  show AuthPolicy = "policy"+  show SoftFail = "softfail"++instance Read AuthResult where+  readsPrec _ r =+    [(NoAuth,s) | ("none",s) <- lex r]+    ++[(AuthPass,s) | ("pass",s) <- lex r]+    ++[(AuthFail,s) | ("fail",s) <- lex r]+    ++[(TempError,s) | ("temperror",s) <- lex r]+    ++[(PermError,s) | ("permerror",s) <- lex r]+    ++[(AuthNeutral,s) | ("neutral",s) <- lex r]+    ++[(AuthPolicy,s) | ("policy",s) <- lex r]+    ++[(SoftFail,s) | ("softfail",s) <- lex r]++type IpAddress = String++data PolicyEvaluated = PolicyEvaluated {+  peDisposition :: PolicyAction,+  peDkimResult :: AuthResult,+  peSpfResult :: AuthResult+  } deriving (Eq, Show, Read)++data Row = Row {+  rwSourceIp :: IpAddress,+  rwCount :: Int,+  rwPolicyEvaluated :: PolicyEvaluated+  } deriving (Eq, Show, Read)++data Record = Record {+  rcRow :: Row,+  rcAuthDkim :: Maybe DkimAuth,+  rcAuthSpf :: Maybe SpfAuth+  } deriving (Eq, Show, Read)++data DkimAuth = DkimAuth {+  daResult :: AuthResult,+  daDomain :: T.Text,+  daSelector :: T.Text+  } deriving (Eq, Show, Read)++data SpfAuth = SpfAuth {+  saResult :: AuthResult,+  saDomain :: T.Text+  } deriving (Eq, Show, Read)+  +data Feedback = Feedback {+  fbReportMetadata :: ReportMetadata,+  fbPolicyPublished :: PolicyPublished,+  fbRecords :: [Record]+  } deriving (Eq,Show,Read)++xmlFromStream :: (MonadFail m, MonadIO m) => Q.ByteStream m r -> m (Maybe Element)+xmlFromStream stream = do+  let stream' = uncompressStream stream+  lbs <- Q.toLazy_ stream'+  return $ parseXMLDoc lbs++test :: IO ()+test = do+  let filename = "../google.com!enumeration.eu!1607299200!1607385599.zip"+  runResourceT $ do+    mfb <- dmarcFeedbackFromStream $ Q.readFile filename+    case mfb of+      Nothing -> liftIO $ putStrLn "nothing :("+      Just x -> liftIO $ putStrLn $ show x++-- | Parse a DMARC report from a 'Q.ByteStream'+dmarcFeedbackFromStream :: (MonadFail m, MonadIO m) => Q.ByteStream m r -> m (Maybe Feedback)+dmarcFeedbackFromStream stream = do+  mxml <- xmlFromStream stream+  return $ mxml >>= processXml++-- | Parse a DMARC report from a strict 'B.ByteString'+dmarcFeedbackFromStrict :: B.ByteString -> Maybe Feedback+dmarcFeedbackFromStrict = unsafePerformIO . dmarcFeedbackFromStream . Q.fromStrict++-- | Parse a DMARC report from a lazy 'L.ByteString'+dmarcFeedbackFromLazy :: L.ByteString -> Maybe Feedback+dmarcFeedbackFromLazy = unsafePerformIO . dmarcFeedbackFromStream . Q.fromLazy++-- | Parse a DMARC report from an XML document+dmarcFeedbackFromXml = processXml++processXml :: Element -> Maybe Feedback+processXml root =+  let strContent' = T.pack . strContent+      reportMetadata = findChild (unqual "report_metadata") root+      policyPublished = findChild (unqual "policy_published") root+      rmOrgName = strContent' <$> (findChild (unqual "org_name") =<< reportMetadata)+      rmEmail = strContent' <$> (findChild (unqual "email") =<< reportMetadata)+      rmExtraContactInfo = strContent' <$> (findChild (unqual "extra_contact_info") =<< reportMetadata)+      rmReportId = readMaybe =<< strContent <$> (findChild (unqual "report_id") =<< reportMetadata)+      rmDateRange = do+        rm <- reportMetadata+        rangee <- findChild (unqual "date_range") rm+        begine <- findChild (unqual "begin") rangee+        ende <- findChild (unqual "end") rangee+        let begins = strContent begine+            ends = strContent ende+        begint <- parseTimeM True defaultTimeLocale "%s" begins+        endt <- parseTimeM True defaultTimeLocale "%s" ends+        return (begint, endt)+      mpolicy = do+        pp <- policyPublished+        ppDomain <- strContent' <$> findChild (unqual "domain") pp+        ppDkimAlignment <- (do+          adkim <- findChild (unqual "adkim") pp+          readMaybe $ strContent adkim) <|> Just Relaxed+        ppSpfAlignment <- (do+          aspf <- findChild (unqual "spf") pp+          readMaybe $ strContent aspf) <|> Just Relaxed+        ppPolicy <- (do+          p <- findChild (unqual "p") pp+          readMaybe $ strContent p) <|> Just NoPolicy+        ppSubdomainPolicy <- (do+          sp <- findChild (unqual "sp") pp+          readMaybe $ strContent sp) <|> Just NoPolicy+        ppPercent <- (do+          pct <- findChild (unqual "pct") pp+          readMaybe $ strContent pct) <|> Just 100+        return PolicyPublished{..}+      mpe el = do+        dispo <- (readMaybe =<< strContent <$> findChild (unqual "disposition") el) <|> Just NoPolicy+        dkim <- (readMaybe =<< strContent <$> findChild (unqual "dkim") el) <|> Just NoAuth+        spf <- (readMaybe =<< strContent <$> findChild (unqual "spf") el) <|> Just NoAuth+        return $ PolicyEvaluated dispo dkim spf+      mrow el = do+        pe <- (mpe =<< findChild (unqual "policy_evaluated") el) <|> Just (PolicyEvaluated NoPolicy NoAuth NoAuth)+        sourceip <- strContent <$> findChild (unqual "source_ip") el+        count <- readMaybe =<< (strContent <$> findChild (unqual "count") el)+        return $ Row sourceip count pe+      mda el = do+        domain <- strContent' <$> findChild (unqual "domain") el+        result <- readMaybe =<< strContent <$> findChild (unqual "result") el+        selector <- strContent' <$> findChild (unqual "selector") el+        return $ DkimAuth result domain selector+      msa el = do+        domain <- strContent' <$> findChild (unqual "domain") el+        result <- readMaybe =<< strContent <$> findChild (unqual "result") el+        return $ SpfAuth result domain+      mrecord el = do+        row <- mrow =<< findChild (unqual "row") el+        let authresults = findChild (unqual "auth_results") el+        let da = mda =<< findChild (unqual "dkim") =<< authresults+        let sa = msa =<< findChild (unqual "spf") =<< authresults+        return $ Record row da sa+  in do+    policy <- mpolicy+    let records = mapMaybe mrecord $ findChildren (unqual "record") root+    return $ Feedback ReportMetadata{..} policy records