nixpkgs/pkgs/tools/networking/ucspi-tcp/default.nix

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{ lib, stdenv, fetchurl }:
stdenv.mkDerivation rec {
pname = "ucspi-tcp";
version = "0.88";
src = fetchurl {
url = "https://cr.yp.to/ucspi-tcp/ucspi-tcp-${version}.tar.gz";
sha256 = "171yl9kfm8w7l17dfxild99mbf877a9k5zg8yysgb1j8nz51a1ja";
};
# Plain upstream tarball doesn't build, get patches from Debian
patches = [
(fetchurl {
url = "http://ftp.de.debian.org/debian/pool/main/u/ucspi-tcp/ucspi-tcp_0.88-3.diff.gz";
sha256 = "0mzmhz8hjkrs0khmkzs5i0s1kgmgaqz07h493bd5jj5fm5njxln6";
})
./remove-setuid.patch
];
# Apply Debian patches
postPatch = ''
for fname in debian/diff/*.diff; do
echo "Applying patch $fname"
patch < "$fname"
done
'';
# The build system is weird; 'make install' doesn't install anything, instead
# it builds an executable called ./install (from C code) which installs
# binaries to the directory given on line 1 in ./conf-home.
#
# Also, assume getgroups and setgroups work, instead of doing a build time
# test that breaks on NixOS (I think because nixbld users lack CAP_SETGID
# capability).
preBuild = ''
echo "$out" > conf-home
echo "main() { return 0; }" > chkshsgr.c
'';
installPhase = ''
mkdir -p "$out/bin"
mkdir -p "$out/share/man/man1"
# run the newly built installer
./install
# Install Debian man pages (upstream has none)
cp debian/ucspi-tcp-man/*.1 "$out/share/man/man1"
'';
meta = with lib; {
description = "Command-line tools for building TCP client-server applications";
longDescription = ''
tcpserver waits for incoming connections and, for each connection, runs a
program of your choice. Your program receives environment variables
showing the local and remote host names, IP addresses, and port numbers.
tcpserver offers a concurrency limit to protect you from running out of
processes and memory. When you are handling 40 (by default) simultaneous
connections, tcpserver smoothly defers acceptance of new connections.
tcpserver also provides TCP access control features, similar to
tcp-wrappers/tcpd's hosts.allow but much faster. Its access control rules
are compiled into a hashed format with cdb, so it can easily deal with
thousands of different hosts.
This package includes a recordio tool that monitors all the input and
output of a server.
tcpclient makes a TCP connection and runs a program of your choice. It
sets up the same environment variables as tcpserver.
This package includes several sample clients built on top of tcpclient:
who@, date@, finger@, http@, tcpcat, and mconnect.
tcpserver and tcpclient conform to UCSPI, the UNIX Client-Server Program
Interface, using the TCP protocol. UCSPI tools are available for several
different networks.
'';
homepage = "http://cr.yp.to/ucspi-tcp.html";
license = licenses.publicDomain;
platforms = platforms.linux;
maintainers = [ maintainers.bjornfor ];
};
}