diff --git a/AUTHORS b/AUTHORS new file mode 100644 --- /dev/null +++ b/AUTHORS @@ -0,0 +1,1 @@ +Jens-Ulrik Petersen diff --git a/ChangeLog b/ChangeLog new file mode 100644 --- /dev/null +++ b/ChangeLog @@ -0,0 +1,211 @@ +2001-11-13 Jens Petersen + + * linkchk.hs: Simplified description. Updated todo list. + (gtksetup): No longer set window policy to auto_skrink. + Shorten initial label to just "...". + (hopchk): debug "hopchk:". Don't debug out when returning err. + (reportTime): Remove quotes around regexp string. + (ifaceDown): Use new ifconfig function. Check ifconfig output to + be sure interface is really UP with regexp. + (ifconfig): New function. + (peeraddr): debug "peeraddr:". + (ptpAddress): use new ifconfig function. Don't quote regexp string. + (popen): Add debug message for popen with commands and opts. + +2001-11-01 Jens Petersen + + * linkchk.hs: Updated todo list. Import elemIndex from List, + readFloat and showFFloat from Numeric. + (FlagNullary): New type for options with no arg. + (FlagUnary): New type for options with one arg. + (Flag): Redefined in terms of them. + (debugging): -V gone, -v is now --version. Added --interface, + and --host. Restructured to use FlagNullary and FlagUnary. + (unaryVal): New function that maybe returns value of option with + arg. + (unaryOpt): New function to test whether a unary option present. + (nullaryOpt): New function that tests whether a nullary opt present. + (main): Use FlagNullary and FlagUnary. Updated version. Implicit + parameter opts to start and optsOk. + (optsOk): Tests directly whether both --version and --help, or + --host and --interface specified in implicit ?opt. + (optOk): Removed. + (header): Interface is now an option. + (AF): Removed. + (start): Use implicit opts, and just test for --tty. + (delay): Removed. + (chkDelay): Removed. + (startTty): Use ?opts. labeltxt replaces ifname. doSleep for sleep. + (startGtk): Use ?opts. + (gtksetup): Use ?opts. labeltxt instead of ifname. Give window + autoshrink policy. signalConnect was widgetSignalConnect. Use + containerSetBorderWidth for containerBorderWidth. Rename label to + lbl. Fix width at 50 pixels for now. + (idleHandler): Use ?opts and doSleep. + (interface): New function to return interface. Use ?opts and unaryVal. + (labeltxt): was ifname. Use ?opts and interface. + (doSleep): New. Use ?opts to read --delay. + (hopchk): Use ?opts. Check ifconfig first if --interface given. + ifaceAddr is now pingOpts. debug out when failing with err. + (ping): Use ?opts. + (pingOpts): was ifaceAddr. Use ?opts. + (sigfig): New function in reportTime, to round up time to 3sf's. + (reportTime): Use it. + (ifaceDown): New function to test with ifconfig whether interface + is down. + (peeraddr): Use ?opts and only maybe return interface. If --host + then return host. Use interface and defaultRoute. + (maybeRead): New function which maybe ReadS from a string. + (readRtGwys): Use ?opts. + (gtwyHost): Use ?opts and defaultRoute. + (parseRT): Use ?opts and afOpt. + (adOpt): Use ?opts. + (doParseRTE): Ditto. Drop second guard. + (debug): Use ?opts. + (defaultRoute): New function. + + * README: Rewrote description. Updated dependencies' versions. + + * NEWS: New features in 0.02 + +2001-10-24 Jens Petersen + + * linkchk.spec.in: Added defattr. Increased release number. + + * index.html: add screenshot of window. Restructured Releases and + put Building at end. + + * configure.in: increment version number. Removed AC_CACHE_CHECK + for popenhs version. + +2001-10-18 Jens Petersen + + * linkchk.hs: changed description and updated todo list. Don't + import readHex from Numeric. + (main): Update version to 0.01. + (optsOk): use `and'. + (startTty): debug count. + (gtksetup): window title is now linkchk ++ interface. + (hopchk): peeraddr now returns (address, interface). Add + interface option to ping if necessary. Handle leaking fixed in + ghc-5.02, so drop guard hacks that read all of other stream. + "broken" to "dropped". + (ifaceAddr): return address arg for ping with interface option if + linklocal ipv6. + (reportTime): simplify regexp since handle leaking fixed in ghc. + (chkError): Removed for same reason. + (reportError): Ditto. + (linklocal): tests if an ipv6 address is linklocal. + (peeraddr): returns (address, interface). + + * linkchk.hs: + * linkchk.spec.in: New file, based on popenhs.spec.in + + * screenshot.png: new file. + + * index.html: Add image of window running. Restructured page. + + * configure.in: added AM_INIT_AUTOMAKE. Don't test for grep and + hstags. No more `cat VERSION`. Put gtk+hs cflags in + HCFLAGS. Test for popenhs-config. Add popenhs cflags to + HCFLAGS. Generate Makefile. + + * aclocal.m4: Now autogenerated by aclocal from + + * acinclude.m4: New file. Based on file in popenhs, which turn is + based on gtk+hs file, based on ghc.... + + * VERSION: removed. Version number is now in "configure.in" [and + "linkchk.hs" :-( ] + + * README: updated for 0.01 + + * NEWS: 0.01 entries, describing --delay, -6, time, netstat, + openhs, automake and autoconf + + * Makefile: now autogenerated by autoconf. + + * Makefile.in: autogenerated by automake. + + * Makefile.am: New file. Based on popenhs "Makefile.am". + + * INSTALL: Moved contents to README. This is now generic GNU file. + +2001-10-02 Jens Petersen + + * linkchk.hs: changed license to GPL 2 only. + Program not library. Not LGPL. + Improve description. + Added Todo section. + Don't import IO, since no longer used. + Import Popen. + Import RegexString is back + (LinkState) gone. + (Flag) new flags added: Delay, IPv6 and Debug. + Derive Eq. + (debugging): new unsafe IORef to hold debug state. + (main): version 0.01. Pass all options to start. + (optsOk): handle multiple options. + (AF): new type to denote IP v6 or v4. + (start): Set debugging ioref if debug option set and decide + whether IP v4 or v6. + (delay): New. Converts delay option parameter to integer. + (chkDelay): Helper function to read decimal from string. + (startTty): Signature has maybe interface, af and delay. + pppchk changed to hopchk with af. Instead of report, use a case + to display result. sleep for delay. + (startGtk): Signature has maybe interface, af and delay. + (gtksetup): Ditto. Use ifname to decide name of interface. + (idlehandler): pppchk changed to hopchk with af. Instead of + report, use a case to display result. sleep for delay. + (ifname): new function returns given interface or default as + name. + (Result): new type to denote result. + (hopchk): was pppchk. Signature includes af and Result. peeraddr + takes af. If no address return "no route". Use popen2 instead of + popen, and use ping. If succeeds and no error or jusr warning -- + checking closes err handle! -- return time, report broken if + error, otherwise return ping error message. + (ping): new function that gives ping command depending on af. + (fdCat): removed. + (reportTime): new function to read ping time and format it. + (chkError): New. If err null or just warning, then fine. + (RtEntry): destination back again. + (findInterface): removed + (peeraddr): signature takes maybe interface and af to maybe + string address. readRtHosts renamed to readRtGwys with af. + Find with function cased on maybe interface and af. If no address + return nothing instead of raising error, otherwise just address. + (readRtGwys): was readRtHosts. Takes af. parseRT takes af. + (gtwyHost): handle ipv6 "::" too. + (parseRT): take af. Don't openFile "/proc/net/route", popen2 + netstat -rn instead. afOpt gives inet6 or inet option. If ok, + then parse and return list route entries, otherwise empty list. + (afOpt): New. Returns inet or inet6 depending on af. + (linesRoutingTable): Gone. + (doParseRT): Reflect netstat -rn output instead of /proc/net/route + format. Don't need to convNtoA since netstat gives decimal ipv4 + addresses. Handle both v4 and v6 output. + (convNtoA): Removed. + (debug): new program to print value when debugging. + (popenInOutErr): Moved to POpen, a new separate module. + +2001-10-02 Jens Petersen + + * INSTALL: updated to reflect current versions of dependencies. + Removed text about old versions of gtkhs-config. + + * Makefile: change call of gtkhs-config from variable shell call + to backquote eval inside ghc call. Include popen module. + + * README: GPL 2. Changed description including v4 and v6. + Changed text about /proc to Linux options of ping and netstat. + + * VERSION: 0.01 + + * index.html: changed description. Added section headings. + Improved formatting of releases and add links to rpms. + +2001-08-17 Jens Petersen + + * version 0.00, first public release diff --git a/INSTALL b/INSTALL new file mode 100644 --- /dev/null +++ b/INSTALL @@ -0,0 +1,182 @@ +Basic Installation +================== + + These are generic installation instructions. + + The `configure' shell script attempts to guess correct values for +various system-dependent variables used during compilation. It uses +those values to create a `Makefile' in each directory of the package. +It may also create one or more `.h' files containing system-dependent +definitions. 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See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this library; if not, write to the + Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307 USA. + +Also add information on how to contact you by electronic and paper mail. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the library, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the + library `Frob' (a library for tweaking knobs) written by James Random Hacker. + + , 1 April 1990 + Ty Coon, President of Vice + +That's all there is to it! diff --git a/Linkchk.hs b/Linkchk.hs new file mode 100644 --- /dev/null +++ b/Linkchk.hs @@ -0,0 +1,455 @@ +{-# LANGUAGE ImplicitParams #-} +-- linkchk - a network link monitor +-- +-- Author : Jens-Ulrik Petersen +-- Created: May 2001 +-- +-- Version: $Revision: 1.17 $ from $Date: 2001/11/09 09:03:56 $ +-- +-- Copyright (c) 2001 Jens-Ulrik Holger Petersen +-- +-- 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, version 2. +-- +-- 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. +-- +-- Description ---------------------------------------------------------------- +-- +-- A network link monitor that displays ping times +-- +-- Todo ----------------------------------------------------------------------- +-- +-- * graphic chart output +-- * C-c in controlling tty usually doesn't terminate program +-- * use "do let" more +-- * use broadcast/multicast for tunnels +-- * pass args to Gtk.init +-- * move version to "Version.hs.in" +-- * separate options that can appear multiply from those that can't. +-- * i18n of messages +-- * font sizing +-- * typing of option flags +-- * move network commands to separate module +-- * popup menu +-- * bps output? +-- * display multiple hosts and interfaces +-- * simplify ping error message ("ping: unknown host host HOST", "connect: Network is unreachable") + +import System.Console.GetOpt (getOpt, usageInfo, ArgDescr(..), OptDescr(..), ArgOrder(..)) +import Graphics.UI.Gtk hiding (initGUI, mainGUI) +import qualified Graphics.UI.Gtk as Gtk (initGUI, mainGUI) +import System.IO.Unsafe (unsafePerformIO) +-- import Data.IORef +import List (find, elemIndex) +import Maybe (listToMaybe, fromMaybe, mapMaybe) +import Numeric (readDec, readFloat, showFFloat) +import System.Posix.POpen (popen) +import System.Posix (ProcessStatus(..), getProcessStatus, sleep) +import Text.Regex (mkRegex, matchRegex) +import System (getArgs, getEnv, getProgName, ExitCode(..), exitWith) + +data FlagNullary = Verbose | Version | Help | Tty | IPv6 | Debug + deriving (Show, Eq) +data FlagUnary = Delay | Interface | Host | Width | Wait + deriving (Show, Eq) +data Flag = FNull FlagNullary | FUni FlagUnary String + deriving (Show, Eq) + +options :: [OptDescr Flag] +options = + [ Option [] ["verbose"] (NoArg (FNull Verbose)) "chatty output on stderr", + Option ['v'] ["version"] (NoArg (FNull Version)) "show version number", + Option ['t'] ["tty"] (NoArg (FNull Tty)) "use tty even if X available", + Option ['6'] ["inet6"] (NoArg (FNull IPv6)) "use IPv6", + Option [] ["help"] (NoArg (FNull Help)) "show this message", + Option [] ["debug"] (NoArg (FNull Debug)) "debug output", + Option ['i'] ["interface"] (ReqArg (FUni Interface) "IFACE") "interface", + Option ['h'] ["host"] (ReqArg (FUni Host) "HOST") "hostname or address", + Option ['w'] ["width"] (ReqArg (FUni Width) "WIDTH") "width of gtk window", + Option ['d'] ["delay"] (ReqArg (FUni Delay) "SECONDS") "delay between pings", + Option ['d'] ["wait"] (ReqArg (FUni Wait) "SECONDS") "how long ping waits for each reply"] + +unaryValList :: (?opts :: [Flag]) => FlagUnary -> [String] +unaryValList c = + mapMaybe (chkOpt c) ?opts + where + chkOpt :: FlagUnary -> Flag -> Maybe String + chkOpt d f = + case f of + FUni d' s | d' == d -> Just s + _ -> Nothing + +unaryVal :: (?opts :: [Flag]) => FlagUnary -> Maybe String +unaryVal = listToMaybe . unaryValList + +unaryOpt :: (?opts :: [Flag]) => FlagUnary -> Bool +unaryOpt c = + or $ map (chkOpt c) ?opts + where + chkOpt :: FlagUnary -> Flag -> Bool + chkOpt d f = + case f of + FUni d' _ | d' == d -> True + _ -> False + +nullaryOpt :: (?opts :: [Flag]) => FlagNullary -> Bool +nullaryOpt c = + (FNull c) `elem` ?opts + +type Interface = String +type Address = String +type Result = String + +main :: IO () +main = + do + cmdline <- getArgs + case (getOpt Permute options cmdline) of + ([FNull Help], [], []) -> putStr (usageInfo header options) + ([FNull Version], [], []) -> putStrLn "linkchk version 0.02" + (opts, [], []) + | let ?opts = opts in optsOk + -> let ?opts = opts in start + | otherwise -> putStr $ usageInfo header options + (_,_,errs) -> error (concat errs ++ usageInfo header options) + where optsOk :: (?opts :: [Flag]) => Bool + optsOk = not (nullaryOpt Version && nullaryOpt Help) + && + not (unaryOpt Interface && unaryOpt Host) + +header :: String +header = "Usage: " ++ (unsafePerformIO $ getProgName) + ++ " [OPTION...]" + +start :: (?opts :: [Flag]) => IO () +start = + if nullaryOpt Tty + then do startTty 0 + else do startGtk + +startTty :: (?opts :: [Flag]) => Int -> IO () +startTty count = + do + st <- hopchk + putStrLn (labeltxt ++ ": " ++ st) + debug count + doSleep + startTty (count+1) + +startGtk :: (?opts :: [Flag]) => IO () +startGtk = + do + dsply <- catch (do + d <- getEnv "DISPLAY" + return $ Just $ d) + (\_ -> (return Nothing)) + case dsply of + Just _ -> + do + gtksetup + Nothing -> + do + startTty 0 + +gtksetup :: (?opts :: [Flag]) => IO () +gtksetup = + do + args <- Gtk.initGUI + + window <- windowNew -- WindowToplevel + windowSetTitle window ("linkchk " ++ labeltxt) +-- windowSetPolicy window False False True -- auto_skrink +-- let winDelHdl = WidgetDeleteEventHandler $ \_ _ -> do +-- mainQuit +-- return False +-- signalConnect window winDelHdl + containerSetBorderWidth window 3 + + frame <- frameNew -- labeltxt + frameSetShadowType frame ShadowEtchedIn + containerAdd window frame + + lbl <- labelNew $ Just "..." +-- functions no longer exist? +-- widgetSetUSize lbl width 0 +-- labelSetLineWrap lbl True + containerAdd frame lbl + +-- type sig changed +-- idleAdd (IdleHandler $ idleHandler lbl ) + + widgetShowAll window + + Gtk.mainGUI + exitWith ExitSuccess + where + idleHandler :: (?opts :: [Flag]) => Label -> IO Bool + idleHandler lbl = + do + st <- hopchk + labelSetLabel lbl st + doSleep + return True + width :: (?opts :: [Flag]) => Int + width = + case unaryVal Width + of + Just w -> + case maybeRead readDec w + of + Just n -> n + Nothing -> error ("WIDTH must be non-neg int.\n" + ++ usageInfo header options) + Nothing -> 50 + +interface :: (?opts :: [Flag]) => Maybe Interface +interface = unaryVal Interface + +labeltxt :: (?opts :: [Flag]) => String +labeltxt = + fromMaybe ifname $ unaryVal Host + where + ifname :: (?opts :: [Flag]) => String + ifname = fromMaybe "default" interface + +doSleep :: (?opts :: [Flag]) => IO () +doSleep = + let delaytime = + case unaryVal Delay + of + Just ds -> + case maybeRead readDec ds + of + Just t -> t + Nothing -> error ("DELAY must be non-neg int.\n" + ++ usageInfo header options) + Nothing -> 1 + in + do sleep delaytime >> return () + +hopchk :: (?opts :: [Flag]) => IO Result +hopchk = + do + debug "hopchk:" + ifDown <- ifaceDown + if ifDown then + return "down" + else + do + addrIface <- peeraddr + debug addrIface + case addrIface + of + Nothing -> return "no route" + Just (addr,iface) -> + do + (out, err, status) <- popen2 ping $ pingOpts iface addr + case status + of + Just (Exited ExitSuccess) -> + return $ reportTime out + Just (Exited (ExitFailure _)) | null err -> + return "dropped" + _ -> + do + return err + where + ping :: (?opts :: [Flag]) => String + ping = + if nullaryOpt IPv6 + then "ping6" + else "ping" + pingOpts :: (?opts :: [Flag]) => Maybe Interface -> Address -> [String] + pingOpts iface addr = + case iface + of + Nothing -> [] + Just ifc -> + if nullaryOpt IPv6 && linklocal addr + then ["-I", ifc] + else [] + ++ ["-c", "1", + "-w", (fromMaybe "1" $ unaryVal Wait), + addr] + reportTime :: String -> String + reportTime str = + let re = mkRegex ".*\n.*time=([0-9\\.]+) (us|ms|s)ec" + sigfig :: String -> String + sigfig time = + let wholeDigits = elemIndex '.' time + in + case wholeDigits + of + Just d -> + case maybeRead readFloat time + of + Just t -> + showFFloat (Just (3 - d)) t "" + Nothing -> time + Nothing -> time + in + case matchRegex re str + of + Just (time:unit:_) -> sigfig time ++ " " ++ unit + _ -> "> 1 s" + +ifaceDown :: (?opts :: [Flag]) => IO Bool +ifaceDown = + case interface + of + Nothing -> return False + Just ifce -> + do + res <- ifconfig ifce + case res + of + Just out -> + let re = mkRegex "(.*\n)+ *(UP) " in + case matchRegex re out + of + Just _ -> return False + Nothing -> return True + Nothing -> return True + +ifconfig :: (?opts :: [Flag]) => Interface -> IO (Maybe String) +ifconfig ifc = + do + (out, err, status) <- popen2 "ifconfig" [ifc] + case status + of + Just (Exited ExitSuccess) | null err -> return $ Just out + _ -> return Nothing + + +peeraddr :: (?opts :: [Flag]) => IO (Maybe (Address, Maybe Interface)) +peeraddr = + case unaryVal Host + of + Just h -> return $ Just $ (h, Nothing) + Nothing -> + do + debug "peeraddr:" + peerAddr <- ptpAddress + case peerAddr + of + Just a -> return $ Just $ (a, interface) + Nothing -> + do + rt <- readRtGwys + debug rt + case (find (case interface + of + -- look for default route + Nothing -> + \ x -> (rteDest x) == defaultRoute + -- look for gateway for interface + Just iface -> + \ x -> (rteIface x) == iface) + rt) + of + Just x -> + return $ Just $ (rteGtwy x, Just $ rteIface x) + _ -> return Nothing + +ptpAddress :: (?opts :: [Flag]) => IO (Maybe Address) +ptpAddress = + case interface + of + Nothing -> return Nothing + Just ifc -> + do + res <- ifconfig ifc + case res + of + Just out -> + case matchRegex re out + of + Just (addr:_) -> return $ Just addr + _ -> return Nothing + _ -> + return Nothing + where + re = mkRegex ".*\n.*P-t-P:([0-9\\.]+) " + + +maybeRead :: ReadS a -> String -> Maybe a +maybeRead rd str = + case rd str + of + [(t, "")] -> Just t + _ -> Nothing + +linklocal :: Address -> Bool +linklocal addr = + (take 5 addr) == "fe80:" + +data RtEntry = RtEntry {rteIface :: Interface, rteDest, rteGtwy :: Address} + deriving (Show) + +readRtGwys :: (?opts :: [Flag]) => IO [RtEntry] +readRtGwys = + do + rt <- parseRT + return $ filter gtwyHost $ rt + where + gtwyHost :: (?opts :: [Flag]) => RtEntry -> Bool + gtwyHost x = (rteGtwy x) /= defaultRoute + parseRT :: (?opts :: [Flag]) => IO [RtEntry] + parseRT = + do + (out, err, status) <- popen2 "netstat" ["-r", "-n", afOpt] + case status + of + Just (Exited ExitSuccess) | null err -> + return $ map doParseRTE $ drop 2 $ lines out + _ -> + return [] + afOpt :: (?opts :: [Flag]) => String + afOpt = + if nullaryOpt IPv6 + then "--inet6" + else "--inet" + + doParseRTE :: (?opts :: [Flag]) => String -> RtEntry + doParseRTE l = + case (words l) + of + dest:gtwy:_:_:_:_:iface:_ | nullaryOpt IPv6 -> + (RtEntry iface (cleanAddr dest) (cleanAddr gtwy)) + dest:gtwy:_:_:_:_:_:iface:_ -> + (RtEntry iface dest gtwy) + _ -> error ("Can't parse routing table line:\n" ++ l) + cleanAddr :: String -> Address + cleanAddr addr = + takeWhile (/= '/') addr + +defaultRoute :: (?opts :: [Flag]) => Address +defaultRoute = + if nullaryOpt IPv6 + then "::" + else "0.0.0.0" + +debug :: (?opts :: [Flag], Show a) => a -> IO () +debug v = + if nullaryOpt Debug then + do + print v + else + return () + +popen2 :: (?opts :: [Flag]) => String -> [String] -> + IO (String, String, Maybe ProcessStatus) +popen2 cmd opts = + do + debug ("popen " ++ cmd ++ " " ++ show opts) + (out, err, pid) <- popen cmd opts Nothing + status <- getProcessStatus True False pid + debug status + debug out + debug err + return (out, err, status) +-- return $ (out, err, pid) diff --git a/NEWS b/NEWS new file mode 100644 --- /dev/null +++ b/NEWS @@ -0,0 +1,24 @@ +New in 0.02 + +* fixed width of window. The width no longer varies annoyingly. +++ --width option to set width of window +* --host option to ping a specific host +* interface arg is now an option --interface +** when interface specified, checks ifconfig first to see if it is up +* use implicit parameter to float options around + + +New in 0.01 + +* displays ping time instead of ok status +* IPv6 support +* command option to set delay between pings +* uses netstat instead of /proc/net/route +* uses popenhs +* uses automake and autoconf + + +New in 0.00 + +* basic IPv4 ping support to network gateway +* gtk and tty output diff --git a/README b/README new file mode 100644 --- /dev/null +++ b/README @@ -0,0 +1,51 @@ +linkchk is an active network link monitor +(c) 2001 Jens-Ulrik Petersen + +It is licensed under GPL 2 and comes with no warranty. + +The latest version can be found at: + +DESCRIPTION + +By default it repeatedly pings the IPv4 (or IPv6) address of +the default gateway of a given interface appearing in the +routing table and shows the link status in a small gtk +window or in a tty. With appropriate options it can be used +monitor any interface with a gateway or to ping any specific +host. gtk+hs is currently required to build it. The reason +for starting this project was to monitor an unreliable ppp +link at home with a tendency suddenly to start dropping +packets after a while. + +Currently it uses some options of ping, ping6 and netstat +that are probably specific to Linux, but porting to most +unices should be straightforward I imagine. If you get +linkchk working on another platform and can send me patches, +or can send me "ifconfig" and "netstat" output from your +platform, then I will be happy to try to fold them into the +distribution. + +If you find linkchk useful, or have comments, feedback or +other contributions, I would be glad to hear from you. + +BUILDING + +In order to build linkchk you need to have installed + +* gtk+hs: a recent version (I'm using 0.12.1 from cvs) + (available from ). +* c2hs: a recent version (I'm using 0.10.1 from cvs) +* ghc: a recent version (I'm using 5.02) + +Once you have those in place, you should be able to build in +the standard way; ie something like: + + % ./configure + % make + % make install + +should make and install the executable "linkchk", that +you can then test by running. "linkchk --help" lists its +options. + +See the generic INSTALL instructions for more information on building. diff --git a/Setup.hs b/Setup.hs new file mode 100644 --- /dev/null +++ b/Setup.hs @@ -0,0 +1,5 @@ +#!/usr/bin/runhaskell + +import Distribution.Simple + +main = defaultMainWithHooks defaultUserHooks diff --git a/TODO b/TODO new file mode 100644 --- /dev/null +++ b/TODO @@ -0,0 +1,25 @@ +TODO List + +* Modularisation +** separating gtk support and make it a build-time option +** Modularise route-table parsing. + +* The restriction to the local link is essentially arbitrary: +extending the program to check the transport ("ping"!) to +any ip address should not be too difficult: for distant +hosts some timeout conditions may be required. + +* Make it portable: check ping and netstat options and +output on other systems. + +Too many others things! + +* gnome applet?! +* gtk configuration +* multiple interfaces? +* parsing the output of one long-lived ping process instead +* dealing with multiple routers on link +* shortcuts, eg C-q + +* ppp control +** if ppp link is broken, option to restart it automatically diff --git a/index.html b/index.html new file mode 100644 --- /dev/null +++ b/index.html @@ -0,0 +1,60 @@ + + + + Linkchk + + + + +

linkchk

+ [screenshot (540B)] +

Description

+

linkchk is a network interface link ping monitor. It supports both IPv4 and IPv6. It works by monitoring the routing table and pinging the gateway (next hop) of a network interface. When the link is up and functioning the ping time is displayed in a small gtk window, otherwise the link status is displayed. linkchk can also run in a tty.

+

I wrote this because of my unreliable ISDN TA which has a + tendency to freeze my ppp link intermittently. So I wanted a quick and + convenient way of monitoring the link's state.

+ +

Releases

+ +

2001-11-14 linkchk-0.02 released: source tarball, i386 rpm and source rpm +

    +
  • fixed width of window
    • +
  • host option to allowing pinging of a specific host
    • +
  • interface argument made into an option
    • +
  • uses implicit parameters
    • +
+

+

2001-10-18 linkchk-0.01 released: source tarball, i386 rpm and source rpm +

    +
  • displays ping time when link working
    • +
  • added IPv6 support
    • +
  • command option to set delay between pings
    • +
  • uses popenhs
    • +
+

+

2001-08-17 initial release: linkchk-0.00 and gzip'ed Linux binary

+ + (The binaries probably require a newish Linux distribution to work.) + +

Building

+

Building requires: +

    +
  • the Glasgow Haskell Compiler ghc,
    • +
  • the GTK+ Binding for Haskell gtk+hs, and
    • +
  • C->Haskell c2hs
    • +
  • popenhs
    • +
+

+
+
Jens-Ulrik Petersen
+ + +Last modified: Wed Nov 14 07:03:45 JST 2001 + + + diff --git a/linkchk.cabal b/linkchk.cabal new file mode 100644 --- /dev/null +++ b/linkchk.cabal @@ -0,0 +1,26 @@ +name: linkchk +version: 0.0.2 +synopsis: linkchk is a network interface link ping monitor. +description: It supports both IPv4 and IPv6. It works by monitoring + the routing table and pinging the gateway (next hop) + of a network interface. When the link is up and functioning + the ping time is displayed in a small gtk window, otherwise + the link status is displayed. linkchk can also run in a tty. +category: System +license: GPL +license-file: LICENSE +author: Jens-Ulrik Petersen +maintainer: Jens-Ulrik Petersen +homepage: http://www.haskell.org/~petersen/haskell/linkchk/ +build-type: Simple +Cabal-Version: >= 1.2 +data-files: AUTHORS, INSTALL, NEWS, README, TODO, ChangeLog, index.html + +Executable linkchk + main-is: Linkchk.hs + -- The GTK dependency was tested with gtk-0.9.12.1; I don't version it because + -- GTK doesn't change too fast. + build-depends: base, haskell98, regex-compat, unix, popenhs, gtk + + ghc-options: -O2 -Wall -optl-Wl,-s + ghc-prof-options: -prof -auto-all