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Diffstat (limited to 'src')
| -rw-r--r-- | src/Main.hs | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/src/Main.hs b/src/Main.hs new file mode 100644 index 0000000..3f13b33 --- /dev/null +++ b/src/Main.hs @@ -0,0 +1,131 @@ +{-# LANGUAGE QuasiQuotes #-} +module Main ( + main +) where + +import Data.ByteString.Char8 (unpack) +import Data.Char (toLower) +import Data.HashMap.Strict (fromListWith, toList) +import Data.Maybe (fromJust) +import Data.Version (showVersion) +import LDAP.Init (ldapSimpleExternalSaslBind, ldapInitialize) +import LDAP.Modify (LDAPMod(..), LDAPModOp(..), ldapAdd, ldapDelete, ldapModify, list2ldm) +import LDAP.Search (LDAPScope(LdapScopeBase), SearchAttributes(LDAPAllUserAttrs), LDAPEntry(..), ldapSearch) +import LDAP.Types (LDAP) +import Paths_ldapply (version) -- from cabal +import System.Environment (getArgs) +import System.Exit (die) +import Text.InterpolatedString.Perl6 (qc) +import Text.LDIF.Parser (defaulLDIFConf, parseLDIFFile) +import Text.LDIF.Printer (dn2str) +import Text.LDIF.Types (Attribute(..), Value(..), Change(..), LDIF(..), LDIFRecord(..), Modify(..), reDN) +import qualified System.Console.Docopt.NoTH as O + +{-- + TODO: + 1. Streaming from stdin (good for large amount of LDIF data) + 2. Simple bind with DN and password +--} + +usage :: String +usage = + "ldapply " ++ showVersion version ++ + " - LDIF dempotent apply tool" ++ [qc| + +Usage: + ldapply [options] LDIF... + +Options: + -H <ldapuri> LDAP URL to connect to [default: ldapi:///] + + -h, --help Show this message +|] + + +main :: IO () +main = do + doco <- O.parseUsageOrExit usage + args <- O.parseArgsOrExit doco =<< getArgs + if args `O.isPresent` O.longOption "help" + then putStrLn $ O.usage doco + else do + let + ldifs = O.getAllArgs args $ O.argument "LDIF" + ldapUrl = fromJust $ O.getArg args $ O.shortOption 'H' + ldap <- ldapInitialize ldapUrl + ldapSimpleExternalSaslBind ldap + mapM_ (processLDIF ldap) ldifs + + +processLDIF :: LDAP -> FilePath -> IO () +processLDIF ldap f = do + p <- parseLDIFFile defaulLDIFConf f + case p of + Left err -> die $ show err + Right (LDIF _ rs) -> mapM_ (apply ldap) rs + + +apply :: LDAP -> LDIFRecord -> IO () +apply ldap rec = do + putStrLn $ "looking for " ++ show (dn rec) + entries <- ldapSearch ldap (Just $ dn rec) LdapScopeBase Nothing LDAPAllUserAttrs False + case entries of + [] -> do + putStrLn $ "not found " ++ show (dn rec) + update ldap Nothing rec + [e] -> do + putStrLn $ "found " ++ show (dn rec) + update ldap (Just e) rec + _ -> die $ "internal error: too many entries in response (only 1 or 0 expected): " + ++ show (length entries) + + +update :: LDAP -> Maybe LDAPEntry -> LDIFRecord -> IO () +update _ Nothing rec@(ChangeRecord _ _) = + die $ "cannot update non-existing entry " ++ show (dn rec) + +update ldap (Just _) rec@(ChangeRecord _ ch)= do + putStrLn $ "modifing " ++ show (dn rec) + change ldap (dn rec) ch + +update ldap Nothing rec@(ContentRecord _ av) = do + putStrLn $ "adding " ++ show (dn rec) + ldapAdd ldap (dn rec) . list2ldm LdapModAdd . collect $ av + +update ldap (Just (LDAPEntry _ attrs)) rec@(ContentRecord _ av)= do + putStrLn $ "replacing " ++ show (dn rec) + ldapModify ldap (dn rec) (replace ++ delete) + where + replace = list2ldm LdapModReplace newAttrs + delete = list2ldm LdapModDelete oldAttrs + newAttrs = collect av + oldAttrs = [ a | a@(v, _) <- attrs, notElem (low v) $ map fst newAttrs ] + + +change :: LDAP -> String -> Change -> IO () +change _ _ ChangeModDN = die "modrdn is not supported" +change ldap n (ChangeAdd av) = ldapModify ldap n . list2ldm LdapModAdd . collect $ av +change ldap n (ChangeModify m) = ldapModify ldap n . map mod2mod $ m +change ldap n ChangeDelete = ldapDelete ldap n + +mod2mod :: Modify -> LDAPMod +mod2mod (ModAdd a vv) = LDAPMod LdapModAdd (attr2str a) (map val2str vv) +mod2mod (ModDelete a vv) = LDAPMod LdapModDelete (attr2str a) (map val2str vv) +mod2mod (ModReplace a vv) = LDAPMod LdapModReplace (attr2str a) (map val2str vv) + +collect :: [(Attribute, Value)] -> [(String, [String])] +collect = toList . fromListWith (++) . map (\(a, v) -> (attr2str a, [val2str v])) + +attr2str :: Attribute -> String +attr2str (Attribute a) = low . unpack $ a + +val2str :: Value -> String +val2str (Value v) = unpack v +val2str (ValueI v) = unpack v + +dn :: LDIFRecord -> String +dn = unpack . dn2str . reDN + +low :: String -> String +low = map toLower + |