Remove the old README.
Switch license from GPL-3 to AGPL-3.
Add a reverse lookup example (using dig) to the man page.
- GNU GENERAL PUBLIC LICENSE
- Version 3, 29 June 2007
+ 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
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-your programs, too.
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+
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+
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+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.
+++ /dev/null
-
-Overview
---------
-
-Hath is a Haskell program for working with network blocks in CIDR[1]
-notation. When dealing with blocks of network addresses, there are a
-few things that you (i.e. I) want to do with them:
-
- * Create a regular expression matching the CIDR block(s). This is
- because grep will throw up if you feed it CIDR.
-
- * Combine small blocks into larger ones. For example, if you have two
- consecutive /24s, they might combine into a larger /23.
-
- * View the result of block combination in a useful way.
-
-Hath does just that. It takes as its input (via stdin, or a file with
-the -i parameter) a list of CIDR blocks. From now on, assume we have
-the following in cidrs.txt:
-
- 10.0.0.0/24
- 10.0.1.0/24
-
-
-Modes
------
-
-Hath has the following modes:
-
- * Regexed
-
- This computes a (Perl-compatible) regular expression matching
- the input CIDR blocks. It's the default mode of operation.
-
- $ hath -i cidrs.txt
- ([^\.0-9](10)\.(0)\.(0)\.(0)[^\.0-9]|[^\.0-9](10)\.(0)\.(1)
- \.(0)[^\.0-9])
-
- * Reduced
-
- This combines small blocks into larger ones where possible, and
- eliminates redundant blocks. The output should be equivalent to
- the input, though.
-
- $ hath reduced -i cidrs.txt
- 10.0.0.0/23
-
- * Duped
-
- Shows only the blocks that would be removed by reduce; that is, it
- shows the ones that would get combined into larger blocks or are
- simply redundant.
-
- $ hath duped -i cidrs.txt
- 10.0.0.0/24
- 10.0.1.0/24
-
- * Diffed
-
- Shows what would change if you used reduce. Uses diff-like
- notation.
-
- $ hath diffed -i cidrs.txt
- -10.0.0.0/24
- -10.0.1.0/24
- +10.0.0.0/23
-
-Each of the modes also supports a present-tense flavor; the following
-are equivalent to their counterparts: regex, reduce, dupe, diff.
-
-
-Bugs
-----
-
-Send bugs to the moon[2].
-
-
-
-[1] http://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing
-
-[2] michael@orlitzky.com
+++ /dev/null
-1. The use of parallel-io limits us to a number of threads equal to
- the number of capabilities. This doesn't make much sense since the
- DNS lookups aren't CPU-bound.
hath \- Manipulate network blocks in CIDR notation
.SH SYNOPSIS
-\fBhath\fR [\fBregexed|reduced|duped|diffed|listed|reversed\fR] [\fB\-hb\fR] \fI<input>\fR
+\fBhath\fR [\fBregexed|reduced|duped|diffed|listed\fR] [\fB\-hb\fR] \fI<input>\fR
.SH INPUT
.P
The \fIinput\fR (stdin) should be a list of CIDR blocks, separated by
View the result of block combination in a useful way.
.IP \(bu
List them.
-.IP \(bu
-Find their associated PTR records.
.P
Hath does just that. It takes as its input (via stdin) a list of CIDR
blocks.
Hath has several modes:
.IP \(bu 2
\fBRegexed\fR
-.P
+
This computes a (Perl-compatible) regular expression matching
the input CIDR blocks. It's the default mode of operation.
-.P
+
.nf
.I $ echo \(dq10.0.0.0/29 10.0.0.8/29\(dq | hath
((10)\.(0)\.(0)\.(15|14|13|12|11|10|9|8|7|6|5|4|3|2|1|0))
.fi
.IP \(bu 2
\fBReduced\fR
-.P
+
This combines small blocks into larger ones where possible, and
eliminates redundant blocks. The output should be equivalent to
the input, though.
-.P
+
.nf
.I $ echo \(dq10.0.0.0/24 10.0.1.0/24\(dq | hath reduced
10.0.0.0/23
.fi
.IP \(bu 2
\fBDuped\fR
-.P
+
Shows only the blocks that would be removed by reduce; that is, it
shows the ones that would get combined into larger blocks or are
simply redundant.
-.P
+
.nf
.I $ echo \(dq10.0.0.0/24 10.0.1.0/24\(dq | hath duped
10.0.0.0/24
.fi
.IP \(bu 2
\fBDiffed\fR
-.P
+
Shows what would change if you used reduce. Uses diff-like
notation.
-.P
+
.nf
.I $ echo \(dq10.0.0.0/24 10.0.1.0/24\(dq | hath diffed
-10.0.0.0/24
.fi
.IP \(bu 2
\fBListed\fR
-.P
+
List the IP addresses contained within the given CIDRs.
-.P
+
.nf
.I $ echo 192.168.0.240/29 | hath listed
192.168.0.240
192.168.0.246
192.168.0.247
.fi
-.IP \(bu 2
-\fBReversed\fR
-.P
-Perform reverse DNS (PTR) lookups on the IP addresses contained within
-the given CIDRs.
-.P
-.nf
-.I $ echo 198.41.0.4/30 | hath reversed
-198.41.0.4: a.root-servers.net.
-198.41.0.5:
-198.41.0.6: rs.internic.net.
-198.41.0.7:
-.fi
-.P
-The DNS lookups are usually the bottleneck for this mode, but we can
-perform them in parallel. Simply pass the number of threads to the GHC
-runtime on the command line; for example, the following will perform
-25 lookups in parallel:
+.SH EXAMPLES
.P
+Use the \(dqdig\(dq command to look up the PTR records for a netblock:
+
.nf
-.I $ echo 198.41.0.4/24 | hath reversed +RTS -N25
-198.41.0.4: a.root-servers.net.
-198.41.0.5:
-198.41.0.6: rs.internic.net.
-\(pc\(pc\(pc
+.I $ echo 198.41.0.4/30 | hath listed | xargs -I{} dig +noall +answer -x '{}'
+4.0.41.198.in-addr.arpa. 897 IN PTR a.root-servers.net.
+6.0.41.198.in-addr.arpa. 900 IN PTR rs.internic.net.
.fi
-
.SH OPTIONS
.IP \fB\-\-barriers\fR,\ \fB\-b\fR
-(regexed mode only) place barriers in front/back of the regex to
-prevent e.g. '127.0.0.1' from matching '127.0.0.100'. The downside is
-that the resulting regexp will match something that is not an IP
-address, and this messes up e.g. \fIgrep -o\fR.
+(regexed mode only)
+
+Place barriers in front/back of the regex to prevent, for
+example, '127.0.0.1' from matching '127.0.0.100'. The downside is that
+the resulting regexp will match something that is not an IP address.
+This can interfere with things like \fIgrep -o\fR.
-.P
Without \fB\-\-barriers\fR, you can match things you shouldn't:
.nf
127.0.0.100
.fi
-.P
Using \fB\-\-barriers\fR can prevent this:
-
.nf
.I $ echo 127.0.0.100 | grep -P $(echo 127.0.0.1/32 | hath -b)
.I $ echo $?
1
.fi
-.P
But, this may also cause the regex to match something that isn't an IP
address:
-
.nf
.I $ echo x127.0.0.1x | grep -Po $(echo 127.0.0.1/32 | hath -b)
x127.0.0.1x
.fi
+.SH BUGS
+
+Send bugs to michael@orlitzky.com.
name: hath
-version: 0.2.4
+version: 0.3.0
cabal-version: >= 1.8
author: Michael Orlitzky
maintainer: Michael Orlitzky <michael@orlitzky.com>
homepage: http://michael.orlitzky.com/code/hath.php
category: Utils
-license: GPL-3
+license: AGPL-3
license-file: doc/LICENSE
build-type: Simple
extra-source-files:
doc/man1/hath.1
test/shell/*.test
- test/shell-net/*.test
synopsis:
Hath manipulates network blocks in CIDR notation.
description:
* View the result of block combination in a useful way.
.
* List them.
- .
- * Find their associated PTR records.
.
Hath has several modes to perform these functions:
.
.
[@Listed@]
List the IP addresses contained within the given CIDRs.
- .
- [@Reversed@]
- Perform reverse DNS (PTR) lookups on the IP addresses contained
- within the given CIDRs.
.
/Examples/:
.
192.168.0.247
@
.
- Perform PTR lookups on all of 198.41.0.4\/30:
- .
- @
- $ echo 198.41.0.4\/30 | hath reversed
- 198.41.0.4: a.root-servers.net.
- 198.41.0.5:
- 198.41.0.6: rs.internic.net.
- 198.41.0.7:
- @
- .
- The DNS lookups are usually the bottleneck for this mode, but we can
- perform them in parallel. Simply pass the number of threads to the
- GHC runtime on the command line; for example, the following will
- perform 25 lookups in parallel:
- .
- @
- $ echo 198.41.0.4\/24 | hath reversed +RTS -N25
- 198.41.0.4: a.root-servers.net.
- 198.41.0.5:
- 198.41.0.6: rs.internic.net.
- ...
- @
- .
The command-line syntax and complete set of options are documented in
the man page.
Bit
Cidr
CommandLine
- DNS
ExitCodes
IPv4Address
Maskable
build-depends:
base == 4.*,
- bytestring >= 0.10,
cmdargs >= 0.10,
- dns >= 1.2,
MissingH >= 1.2,
- parallel-io >= 0.3,
split >= 0.2,
tasty >= 0.8,
tasty-hunit >= 0.8,
build-depends:
base == 4.*,
- bytestring >= 0.10,
cmdargs >= 0.10,
- dns >= 1.2,
MissingH >= 1.2,
- parallel-io >= 0.3,
split >= 0.2,
tasty >= 0.8,
tasty-hunit >= 0.8,
build-depends:
base == 4.*,
- bytestring >= 0.10,
cmdargs >= 0.10,
- dns >= 1.2,
MissingH >= 1.2,
- parallel-io >= 0.3,
process >= 1.1,
split >= 0.2,
tasty >= 0.8,
-optc-march=native
-O2
-
-test-suite shelltests-net
- type: exitcode-stdio-1.0
- hs-source-dirs: test
- main-is: ShellTestsNet.hs
-
- build-depends:
- base == 4.*,
- bytestring >= 0.10,
- cmdargs >= 0.10,
- dns >= 1.2,
- MissingH >= 1.2,
- parallel-io >= 0.3,
- process >= 1.1,
- split >= 0.2,
- tasty >= 0.8,
- tasty-hunit >= 0.8,
- tasty-quickcheck >= 0.8.1
-
- -- It's not entirely clear to me why I have to reproduce all of this.
- ghc-options:
- -Wall
- -fwarn-hi-shadowing
- -fwarn-missing-signatures
- -fwarn-name-shadowing
- -fwarn-orphans
- -fwarn-type-defaults
- -fwarn-tabs
- -fwarn-incomplete-record-updates
- -fwarn-monomorphism-restriction
- -fwarn-unused-do-bind
- -rtsopts
- -threaded
- -optc-O3
- -optc-march=native
- -O2
-
-
source-repository head
type: git
location: http://michael.orlitzky.com/git/hath.git
Reduced { barriers :: Bool } |
Duped { barriers :: Bool } |
Diffed { barriers :: Bool } |
- Listed { barriers :: Bool } |
- Reversed { barriers :: Bool }
+ Listed { barriers :: Bool }
deriving (Data, Show, Typeable)
-- | Description of the 'Regexed' mode.
listed_description =
"Enumerate the IP addresses contained within the input CIDRs."
--- | Description of the 'Reversed' mode.
-reversed_description :: String
-reversed_description =
- "Perform a reverse DNS (PTR) lookup on each IP address " ++
- "contained within the input CIDRs."
-
-
-- | We use explicit annotation here because if we use the magic
-- annotation, we have to duplicate the same argument definitions six
-- times.
--
arg_spec :: Annotate Ann
arg_spec =
- modes_ [regexed += auto, reduced, duped, diffed, listed, reversed]
+ modes_ [regexed += auto, reduced, duped, diffed, listed]
+= program program_name
+= summary my_summary
+= helpArg [explicit,
duped = make_mode Duped duped_description
diffed = make_mode Diffed diffed_description
listed = make_mode Listed listed_description
- reversed = make_mode Reversed reversed_description
-- | This is the public interface; i.e. what main() should use to get
-- the command-line arguments.
+++ /dev/null
--- | Helpers to perform DNS queries.
-module DNS (
- Domain,
- PTRResult,
- lookup_ptrs )
-where
-
-import Control.Concurrent.ParallelIO.Global ( parallel )
-import Network.DNS (
- Domain,
- DNSError,
- ResolvConf(..),
- defaultResolvConf,
- lookupRDNS,
- makeResolvSeed,
- withResolver )
-
-
--- The return type of lookupRDNS.
-type PTRResult = Either DNSError [Domain]
-
-
--- | Take the default ResolvConf and increase the timeout to 15
--- seconds.
-our_resolv_conf :: ResolvConf
-our_resolv_conf =
- defaultResolvConf { resolvTimeout = 15*1000*1000 } -- 15s
-
-
--- | Takes a list of IP addresses (as ByteStrings) and performs
--- reverse (PTR) lookups on each of them.
-lookup_ptrs :: [Domain] -> IO [PTRResult]
-lookup_ptrs ips = do
- rs <- makeResolvSeed our_resolv_conf
- let lookup' addr = withResolver rs $ \resolver ->
- lookupRDNS resolver addr
-
- parallel $ map lookup' ips
module Main
where
-import Control.Concurrent.ParallelIO.Global ( stopGlobalPool )
import Control.Monad (when)
-import qualified Data.ByteString.Char8 as BS (intercalate, pack, unpack)
import Data.List ((\\), intercalate)
import Data.Maybe (catMaybes, isNothing)
import Data.String.Utils (splitWs)
-import Network.DNS.Types ( DNSError (NameError) )
import System.Exit (ExitCode(..), exitWith)
import System.IO (stderr, hPutStrLn)
import Text.Read (readMaybe)
min_octet3,
min_octet4 )
import CommandLine (Args(..), get_args)
-import DNS (Domain, PTRResult, lookup_ptrs)
import ExitCodes ( exit_invalid_cidr )
import Octet ()
-- | A regular expression that matches a non-address character.
+--
non_addr_char :: String
non_addr_char = "[^\\.0-9]"
-- | Add non_addr_chars on either side of the given String. This
-- prevents (for example) the regex '127.0.0.1' from matching
-- '127.0.0.100'.
+--
add_barriers :: String -> String
add_barriers x = non_addr_char ++ x ++ non_addr_char
-- | Take a list of Strings, and return a regular expression matching
-- any of them.
+--
alternate :: [String] -> String
alternate terms = "(" ++ (intercalate "|" terms) ++ ")"
let combined_cidrs = combine_all valid_cidrs
let addrs = concatMap enumerate combined_cidrs
mapM_ print addrs
- Reversed{} -> do
- let combined_cidrs = combine_all valid_cidrs
- let addrs = concatMap enumerate combined_cidrs
- let addr_bytestrings = map (BS.pack . show) addrs
- ptrs <- lookup_ptrs addr_bytestrings
- let pairs = zip addr_bytestrings ptrs
- mapM_ (putStrLn . show_pair) pairs
-
- stopGlobalPool
-
- where
- show_pair :: (Domain, PTRResult) -> String
- show_pair (s, eds) =
- (BS.unpack s) ++ ": " ++ results
- where
- space = BS.pack " "
- results =
- case eds of
- -- NameError simply means "not found" so we output nothing.
- Left NameError -> ""
- Left err -> "ERROR (" ++ (show err) ++ ")"
- Right ds -> BS.unpack $ BS.intercalate space ds
+++ /dev/null
-module Main
-where
-
-import System.Process (
- CreateProcess( env ),
- createProcess,
- shell,
- waitForProcess )
-import System.Exit ( exitWith )
-
-main :: IO ()
-main = do
- -- Get a CreateProcess object corresponding to our shell command.
- let createproc = shell "shelltest test/shell-net/*.test"
-
- -- But clear its environment before running the command.
- let empty_env_createproc = createproc { env = Just [] }
-
- -- Ignore stdin/stdout/stderr...
- (_,_,_,hproc) <- createProcess empty_env_createproc
-
- -- Now run the ProcessHandle and exit with its result.
- result <- waitForProcess hproc
- exitWith result
octet_properties,
octet_tests ]
--- TODO: Run 5000 generated tests, we have a large space.
main :: IO ()
main =
defaultMain $
+++ /dev/null
-# Test the regexed example from the man page.
-echo 198.41.0.4/30 | dist/build/hath/hath reversed
->>>
-198.41.0.4: a.root-servers.net.
-198.41.0.5:
-198.41.0.6: rs.internic.net.
-198.41.0.7:
->>>= 0
projects / hath.git / commitdiff