{-# LANGUAGE CPP #-} {- Copyright (C) 2008 John MacFarlane This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -} module Main where import Network.Gitit import Network.Gitit.Server import Network.Gitit.Util (readFileUTF8) import System.Directory import Data.Maybe (isNothing) import Network.Gitit.Compat.Except() import Control.Monad.Reader import System.Log.Logger (Priority(..), setLevel, setHandlers, getLogger, saveGlobalLogger) import System.Log.Handler.Simple (fileHandler) import System.Environment import System.Exit import System.IO (stderr) import System.Console.GetOpt import Network.Socket hiding (Debug) import Data.Version (showVersion) import qualified Data.ByteString.Char8 as B import Data.ByteString.UTF8 (fromString) import Paths_gitit (version, getDataFileName) main :: IO () main = do -- parse options to get config file args <- getArgs >>= parseArgs -- sequence in Either monad gets first Left or all Rights opts <- case sequence args of Left Help -> putErr ExitSuccess =<< usageMessage Left Version -> do progname <- getProgName putErr ExitSuccess (progname ++ " version " ++ showVersion version ++ compileInfo ++ copyrightMessage) Left PrintDefaultConfig -> getDataFileName "data/default.conf" >>= readFileUTF8 >>= B.putStrLn . fromString >> exitSuccess Right xs -> return xs conf' <- case [f | ConfigFile f <- opts] of fs -> getConfigFromFiles fs let conf = foldl handleFlag conf' opts -- check for external programs that are needed let repoProg = case repositoryType conf of Mercurial -> "hg" Darcs -> "darcs" Git -> "git" let prereqs = ["grep", repoProg] forM_ prereqs $ \prog -> findExecutable prog >>= \mbFind -> when (isNothing mbFind) $ error $ "Required program '" ++ prog ++ "' not found in system path." -- set up logging let level = if debugMode conf then DEBUG else logLevel conf logFileHandler <- fileHandler (logFile conf) level serverLogger <- getLogger "Happstack.Server.AccessLog.Combined" gititLogger <- getLogger "gitit" saveGlobalLogger $ setLevel level $ setHandlers [logFileHandler] serverLogger saveGlobalLogger $ setLevel level $ setHandlers [logFileHandler] gititLogger -- setup the page repository, template, and static files, if they don't exist createRepoIfMissing conf createStaticIfMissing conf createTemplateIfMissing conf -- initialize state initializeGititState conf let serverConf = nullConf { validator = Nothing, port = portNumber conf, timeout = 20, logAccess = Nothing } -- open the requested interface sock <- socket AF_INET Stream defaultProtocol setSocketOption sock ReuseAddr 1 device <- inet_addr (address conf) bindSocket sock (SockAddrInet (toEnum (portNumber conf)) device) listen sock 10 -- start the server simpleHTTPWithSocket sock serverConf $ msum [ wiki conf , dir "_reloadTemplates" reloadTemplates ] data ExitOpt = Help | Version | PrintDefaultConfig data ConfigOpt = ConfigFile FilePath | Port Int | Listen String | Debug deriving (Eq) type Opt = Either ExitOpt ConfigOpt flags :: [OptDescr Opt] flags = [ Option ['h'] ["help"] (NoArg (Left Help)) "Print this help message" , Option ['v'] ["version"] (NoArg (Left Version)) "Print version information" , Option ['p'] ["port"] (ReqArg (Right . Port . read) "PORT") "Specify port" , Option ['l'] ["listen"] (ReqArg (Right . Listen) "INTERFACE") "Specify IP address to listen on" , Option [] ["print-default-config"] (NoArg (Left PrintDefaultConfig)) "Print default configuration" , Option [] ["debug"] (NoArg (Right Debug)) "Print debugging information on each request" , Option ['f'] ["config-file"] (ReqArg (Right . ConfigFile) "FILE") "Specify configuration file" ] parseArgs :: [String] -> IO [Opt] parseArgs argv = case getOpt Permute flags argv of (opts,_,[]) -> return opts (_,_,errs) -> putErr (ExitFailure 1) . (concat errs ++) =<< usageMessage usageMessage :: IO String usageMessage = do progname <- getProgName return $ usageInfo ("Usage: " ++ progname ++ " [opts...]") flags copyrightMessage :: String copyrightMessage = "\nCopyright (C) 2008 John MacFarlane\n" ++ "This is free software; see the source for copying conditions. There is no\n" ++ "warranty, not even for merchantability or fitness for a particular purpose." compileInfo :: String compileInfo = #ifdef _PLUGINS " +plugins" #else " -plugins" #endif handleFlag :: Config -> ConfigOpt -> Config handleFlag conf Debug = conf{ debugMode = True, logLevel = DEBUG } handleFlag conf (Port p) = conf { portNumber = p } handleFlag conf (Listen l) = conf { address = l } handleFlag conf _ = conf putErr :: ExitCode -> String -> IO a putErr c s = B.hPutStrLn stderr (fromString s) >> exitWith c