TCP Wrappers

Download Source:	ftp://ftp.porcupine.org/pub/security/tcp_wrappers_7.6-ipv6.1.tar.gz
Download Patch:	http://svn.cross-lfs.org/svn/repos/patches/tcp_wrappers/tcp_wrappers-7.6-ipv6.1-shared_lib_plus_plus-1.patch

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Introduction to TCP Wrappers

The TCP Wrappers package provides daemon wrapper programs that report the name of the client requesting network services and the requested service.

Additional Configuration Options

Note to DESTDIR fans: TCP Wrappers fortunately does use DESTDIR. However, it fails to create the necessary directories for it and so make install fails when using DESTDIR. You need to create the necessary directories prior to installation:

install -dv <DESTDIR>/usr/include
install -dv <DESTDIR>/usr/lib (or lib{32} or lib{64})
install -dv <DESTDIR>/usr/sbin
install -dv <DESTDIR>/usr/share/man/man{3,5,8}

Non-Multilib

Configure and compile the package:

patch -Np1 -i ../tcp_wrappers-7.6-ipv6.1-shared_lib_plus_plus-1.patch &&
sed -i "s,^extern char \*malloc();,/* & */," scaffold.c &&
make REAL_DAEMON_DIR=/usr/sbin STYLE=-DPROCESS_OPTIONS linux 

Install the package:

make install

Command Explanations

sed -i -e ... scaffold.c: This command removes an obsolete C declaration which causes the build to fail if using GCC >= 3.4.x.

Multilib

32Bit

Configure and compile the package:

patch -Np1 -i ../tcp_wrappers-7.6-ipv6.1-shared_lib_plus_plus-1.patch &&
sed -i "s,^extern char \*malloc();,/* & */," scaffold.c &&
make CC="gcc ${BUILD32}" REAL_DAEMON_DIR=/usr/sbin STYLE=-DPROCESS_OPTIONS linux 

Install the package:

make install

N32

Configure and compile the package:

patch -Np1 -i ../tcp_wrappers-7.6-ipv6.1-shared_lib_plus_plus-1.patch &&
sed -i "s,^extern char \*malloc();,/* & */," scaffold.c &&
sed -i -e "s@/lib/@/lib32/@g" Makefile &&
make CC="gcc ${BUILDN32}" REAL_DAEMON_DIR=/usr/sbin STYLE=-DPROCESS_OPTIONS linux 

Install the package:

make install

64Bit

Configure and compile the package:

patch -Np1 -i ../tcp_wrappers-7.6-ipv6.1-shared_lib_plus_plus-1.patch &&
sed -i "s,^extern char \*malloc();,/* & */," scaffold.c &&
sed -i -e "s@/lib/@/lib64/@g" Makefile &&
make CC="gcc ${BUILD64}" REAL_DAEMON_DIR=/usr/sbin STYLE=-DPROCESS_OPTIONS linux 

Install the package:

make install

Contents

Installed Programs:	tcpd, tcpdchk, tcpdmatch, try-from, and safe_finger
Installed Libraries:	libwrap.{so,a}
Installed Directories:	None

Short Descriptions

tcpd	is the main access control daemon for all Internet services, which inetd or xinetd will run instead of running the requested service daemon.
tcpdchk	is a tool to examine a tcpd wrapper configuration and report problems with it.
tcpdmatch	is used to predict how the TCP wrapper would handle a specific request for a service.
try-from	can be called via a remote shell command to find out if the host name and address are properly recognized.
safe_finger	is a wrapper for the finger utility, to provide automatic reverse name lookups.
libwrap.{so,a}	contains the API functions required by the TCP Wrapper programs as well as other programs to become “TCP Wrapper-aware”.