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This commit is contained in:
Gérald Colangelo
2014-09-04 20:56:23 +02:00
commit 6c085d52a7
51 changed files with 2677 additions and 0 deletions
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2
Makefile.am Normal file
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AUTOMAKE_OPTIONS=foreign
SUBDIRS=src/ conf/

3
conf/Makefile.am Normal file
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confexampledir = $(prefix)/share/doc/ospow-dnsbl-proxy/
confexample_DATA = dnsbl-proxy.conf.tpl

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[general]
zone = @@ZONE@@
port = 53
# timeout in seconds
timeout = 1
# logfile or syslog:facility
log = syslog:daemon
# loglevel
loglevel = INFO
# Server list, coma separeted
server_list = sbl-xbl.spamhaus.org, cbl.abuseat.org, dnsbl.sorbs.net, spam.spam-rbl.fr,rbl.jp,dul.ru
# cache_timeout for cachelifetime (in seconds ...)
cache_timeout = 3600
# Debug = 1 for avoiding background launch ...
debug = 0

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/* config.h.in. Generated from configure.ac by autoheader. */
/* Define to 1 if you have the <arpa/inet.h> header file. */
#undef HAVE_ARPA_INET_H
/* Define to 1 if you have the <arpa/nameser.h> header file. */
#undef HAVE_ARPA_NAMESER_H
/* Define to 1 if you have the `gettimeofday' function. */
#undef HAVE_GETTIMEOFDAY
/* Define to 1 if you have the `inet_ntoa' function. */
#undef HAVE_INET_NTOA
/* Define to 1 if you have the <inttypes.h> header file. */
#undef HAVE_INTTYPES_H
/* Define to 1 if you have the `event' library (-levent). */
#undef HAVE_LIBEVENT
/* Define to 1 if you have the `resolv' library (-lresolv). */
#undef HAVE_LIBRESOLV
/* Define to 1 if your system has a GNU libc compatible `malloc' function, and
to 0 otherwise. */
#undef HAVE_MALLOC
/* Define to 1 if you have the <memory.h> header file. */
#undef HAVE_MEMORY_H
/* Define to 1 if you have the `memset' function. */
#undef HAVE_MEMSET
/* Define to 1 if you have the <netdb.h> header file. */
#undef HAVE_NETDB_H
/* Define to 1 if you have the <netinet/in.h> header file. */
#undef HAVE_NETINET_IN_H
/* Define to 1 if you have the <resolv.h> header file. */
#undef HAVE_RESOLV_H
/* Define to 1 if you have the `socket' function. */
#undef HAVE_SOCKET
/* Define to 1 if you have the <stdint.h> header file. */
#undef HAVE_STDINT_H
/* Define to 1 if you have the <stdlib.h> header file. */
#undef HAVE_STDLIB_H
/* Define to 1 if you have the `strerror' function. */
#undef HAVE_STRERROR
/* Define to 1 if you have the <strings.h> header file. */
#undef HAVE_STRINGS_H
/* Define to 1 if you have the <string.h> header file. */
#undef HAVE_STRING_H
/* Define to 1 if you have the <syslog.h> header file. */
#undef HAVE_SYSLOG_H
/* Define to 1 if you have the <sys/socket.h> header file. */
#undef HAVE_SYS_SOCKET_H
/* Define to 1 if you have the <sys/stat.h> header file. */
#undef HAVE_SYS_STAT_H
/* Define to 1 if you have the <sys/time.h> header file. */
#undef HAVE_SYS_TIME_H
/* Define to 1 if you have the <sys/types.h> header file. */
#undef HAVE_SYS_TYPES_H
/* Define to 1 if you have the <unistd.h> header file. */
#undef HAVE_UNISTD_H
/* Name of package */
#undef PACKAGE
/* Define to the address where bug reports for this package should be sent. */
#undef PACKAGE_BUGREPORT
/* Define to the full name of this package. */
#undef PACKAGE_NAME
/* Define to the full name and version of this package. */
#undef PACKAGE_STRING
/* Define to the one symbol short name of this package. */
#undef PACKAGE_TARNAME
/* Define to the home page for this package. */
#undef PACKAGE_URL
/* Define to the version of this package. */
#undef PACKAGE_VERSION
/* Define to 1 if you have the ANSI C header files. */
#undef STDC_HEADERS
/* Version number of package */
#undef VERSION
/* Define to `int' if <sys/types.h> doesn't define. */
#undef gid_t
/* Define to rpl_malloc if the replacement function should be used. */
#undef malloc
/* Define to `int' if <sys/types.h> doesn't define. */
#undef uid_t

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# -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
AC_PREREQ([2.0])
AC_INIT([ospow-dnsbl-proxy],[2.0], [gcolangelo@ospow.com])
AM_INIT_AUTOMAKE
#PKG_PROG_PKG_CONFIG(0.1)
# Checks for programs.
AC_PROG_CC
AC_PROG_CC_C_O
AM_PROG_CC_C_O
AC_CONFIG_FILES([src/Makefile conf/Makefile Makefile])
# Checks for libraries.
# FIXME: Replace `main' with a function in `-levent':
AC_CHECK_LIB([event], [main])
# FIXME: Replace `main' with a function in `-lresolv':
AC_CHECK_LIB([resolv], [main])
AC_ARG_ENABLE([static], [AC_HELP_STRING([--enable-static], [Enable static binary])],[],[enable_static=no])
if [[ "$enable_static" = "yes" ]]; then
CFLAGS="$CFLAGS -static"
fi
PKG_CHECK_MODULES(glib, gthread-2.0 glib-2.0 )
PKG_CHECK_MODULES(pcre, libpcre)
CFLAGS="-Wall -O2 $CFLAGS $glib_CFLAGS $pcre_CFLAGS"
LIBS="$LIBS $LDFLAGS $glib_LIBS $pcre_LIBS"
#AC_OUTPUT

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The Debian Package ospow-dnsbl-proxy
----------------------------
Comments regarding the Package
-- root <gcolangelo@ospow.com> Thu, 31 Jan 2013 19:11:47 +0100

6
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ospow-dnsbl-proxy for Debian
----------------------------
<possible notes regarding this package - if none, delete this file>
-- root <gcolangelo@ospow.com> Thu, 31 Jan 2013 19:11:47 +0100

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ospow-dnsbl-proxy for Debian
----------------------------
<this file describes information about the source package, see Debian policy
manual section 4.14. You WILL either need to modify or delete this file>

23
debian/changelog vendored Normal file
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ospow-dnsbl-proxy (2.3) unstable; urgency=low
* Correct memory leaks
-- Gérald COLANGELO <gcolangelo@ospow.com> Wed, 03 Apr 2013 11:01:27 +0100
ospow-dnsbl-proxy (2.2) unstable; urgency=low
* Correct bugs, lot of !
-- Gérald COLANGELO <gcolangelo@ospow.com> Wed, 03 Apr 2013 3:41:28 +0100
ospow-dnsbl-proxy (2.1) unstable; urgency=low
* Correct timeout bug
-- Gérald COLANGELO <gcolangelo@ospow.com> Thu, 07 Feb 2013 13:58:14 +0100
ospow-dnsbl-proxy (2.0) unstable; urgency=low
* New version rewritten in C.
-- Gérald COLANGELO <gcolangelo@ospow.com> Thu, 31 Jan 2013 19:11:47 +0100

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7

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debian/control vendored Normal file
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Source: ospow-dnsbl-proxy
Section: unknown
Priority: extra
Maintainer: root <gcolangelo@ospow.com>
Build-Depends: debhelper (>= 7.0.50~), autotools-dev, libevent-dev (>= 2.0.0), libglib2.0-dev (>=2.10), libpcre3-dev
Standards-Version: 3.8.4
Homepage: http://ospow.com
Package: ospow-dnsbl-proxy
Architecture: any
Depends: ${shlibs:Depends}, ${misc:Depends}
Description: Ospow DNSBL Proxy Server
A lightweight, performant DNSBL Proxy Server written in C using libevent.
Implements:
_ A cache mechanism to avoid useless queries
_ Direct interrogation of DNSBL servers
_ TXT record to get where IP is listed:

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debian/copyright vendored Normal file
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This work was packaged for Debian by:
Gérald COLANGELO <gcolangelo@ospow.com> on Thu, 31 Jan 2013 19:11:47 +0100
Upstream Author(s):
Gérald COLANGELO <gcolangelo@ospow.com>
Copyright:
<Copyright (C) 2013 Gérald COLANGELO>
License:
Redistribution and use in source and binary forms, with or without
modification, are permitted under the terms of the BSD License.
THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
On Debian systems, the complete text of the BSD License can be
found in "/usr/share/common-licenses/BSD".
The Debian packaging is:
Copyright (C) 2013 root <gcolangelo@ospow.com>
# Please chose a license for your packaging work. If the program you package
# uses a mainstream license, using the same license is the safest choice.
# Please avoid to pick license terms that are more restrictive than the
# packaged work, as it may make Debian's contributions unacceptable upstream.
# If you just want it to be GPL version 3, leave the following lines in.
and is licensed under the GPL version 3,
see "/usr/share/common-licenses/GPL-3".
# Please also look if there are files or directories which have a
# different copyright/license attached and list them here.

0
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ospow-dnsbl-proxy_2.3_amd64.deb unknown extra

11
debian/ospow-dnsbl-proxy.config vendored Executable file
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#!/bin/sh
# Source debconf library.
. /usr/share/debconf/confmodule
# Zone
db_reset dnsbl-proxy/zone
db_input high dnsbl-proxy/zone || true
db_go

48
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dh_auto_configure
dh_auto_build
dh_auto_test
dh_prep
dh_installdirs
dh_auto_install
dh_install
dh_installdocs
dh_installchangelogs
dh_installexamples
dh_installman
dh_installcatalogs
dh_installcron
dh_installdebconf
dh_installemacsen
dh_installifupdown
dh_installinfo
dh_pysupport
dh_installinit
dh_installmenu
dh_installmime
dh_installmodules
dh_installlogcheck
dh_installlogrotate
dh_installpam
dh_installppp
dh_installudev
dh_installwm
dh_installxfonts
dh_installgsettings
dh_bugfiles
dh_ucf
dh_lintian
dh_gconf
dh_icons
dh_perl
dh_usrlocal
dh_link
dh_compress
dh_fixperms
dh_strip
dh_makeshlibs
dh_shlibdeps
dh_installdeb
dh_gencontrol
dh_md5sums
dh_builddeb
dh_builddeb

129
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#!/bin/sh
### BEGIN INIT INFO
# Provides: ospow-dnsbl-proxy
# Required-Start: $network $local_fs
# Required-Stop:
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: <Enter a short description of the sortware>
# Description: <Enter a long description of the software>
# <...>
# <...>
### END INIT INFO
# Author: root <gcolangelo@ospow.com>
# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="Ospow DNSBL Proxy" # Introduce a short description here
NAME=dnsbl-proxy # Introduce the short server's name here
DAEMON=/usr/sbin/dnsbl-proxy # Introduce the server's location here
DAEMON_ARGS="" # Arguments to run the daemon with
PIDFILE=/var/run/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME
# Exit if the package is not installed
[ -x $DAEMON ] || exit 0
# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] && . /etc/default/$NAME
# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh
# Define LSB log_* functions.
# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
. /lib/lsb/init-functions
#
# Function that starts the daemon/service
#
do_start()
{
$DAEMON # Add code here, if necessary, that waits for the process to be ready
}
#
# Function that stops the daemon/service
#
do_stop()
{
pid=$(pidof dnsbl-proxy)
if [ -n "$pid" ] ; then
kill $pid
kill -9 $pid
fi
}
#
# Function that sends a SIGHUP to the daemon/service
#
do_reload() {
#
# If the daemon can reload its configuration without
# restarting (for example, when it is sent a SIGHUP),
# then implement that here.
#
start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME
return 0
}
case "$1" in
start)
[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC " "$NAME"
do_start
case "$?" in
0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
esac
;;
stop)
[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
do_stop
case "$?" in
0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
esac
;;
status)
status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
;;
#reload|force-reload)
#
# If do_reload() is not implemented then leave this commented out
# and leave 'force-reload' as an alias for 'restart'.
#
#log_daemon_msg "Reloading $DESC" "$NAME"
#do_reload
#log_end_msg $?
#;;
restart|force-reload)
#
# If the "reload" option is implemented then remove the
# 'force-reload' alias
#
log_daemon_msg "Restarting $DESC" "$NAME"
do_stop
case "$?" in
0|1)
do_start
case "$?" in
0) log_end_msg 0 ;;
1) log_end_msg 1 ;; # Old process is still running
*) log_end_msg 1 ;; # Failed to start
esac
;;
*)
# Failed to stop
log_end_msg 1
;;
esac
;;
*)
#echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload}" >&2
echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
exit 3
;;
esac
:

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#!/bin/sh
# postinst script for ospow-dnsbl-proxy
#
# see: dh_installdeb(1)
set -e
. /usr/share/debconf/confmodule
db_get dnsbl-proxy/zone
zone=$RET
case "$1" in
configure)
if [ ! -f /etc/ospow/dnsbl-proxy.conf ] ; then
mkdir -p /etc/ospow/
cat /usr/share/doc/ospow-dnsbl-proxy/dnsbl-proxy.conf.tpl | sed \
-e "s/@@ZONE@@/$zone/" > /etc/ospow/dnsbl-proxy.conf;
else
echo "Config ever exists, skipping ...";
fi
exit 0
;;
abort-upgrade|abort-remove|abort-deconfigure)
;;
*)
echo "postinst called with unknown argument \`$1'" >&2
exit 1
;;
esac
# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.
#DEBHELPER#
exit 0

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debian/ospow-dnsbl-proxy.postinst.debhelper vendored Normal file
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# Automatically added by dh_installinit
if [ -x "/etc/init.d/ospow-dnsbl-proxy" ]; then
if [ ! -e "/etc/init/ospow-dnsbl-proxy.conf" ]; then
update-rc.d ospow-dnsbl-proxy defaults >/dev/null
fi
invoke-rc.d ospow-dnsbl-proxy start || exit $?
fi
# End automatically added section

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# Automatically added by dh_installinit
if [ "$1" = "purge" ] ; then
update-rc.d ospow-dnsbl-proxy remove >/dev/null
fi
# End automatically added section
# Automatically added by dh_installdebconf
if [ "$1" = purge ] && [ -e /usr/share/debconf/confmodule ]; then
. /usr/share/debconf/confmodule
db_purge
fi
# End automatically added section

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# Automatically added by dh_installinit
if [ -x "/etc/init.d/ospow-dnsbl-proxy" ]; then
invoke-rc.d ospow-dnsbl-proxy stop || exit $?
fi
# End automatically added section

1
debian/ospow-dnsbl-proxy.substvars vendored Normal file
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misc:Depends=debconf (>= 0.5) | debconf-2.0

4
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Template: dnsbl-proxy/zone
Type: string
Default: rbl.<yourdomain>
Description: DNS Zone that dnsbl-proxy will serve RBL records

1
debian/ospow-dnsbl-proxy/DEBIAN/conffiles vendored Normal file
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/etc/init.d/ospow-dnsbl-proxy

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debian/ospow-dnsbl-proxy/DEBIAN/config vendored Executable file
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#!/bin/sh
# Source debconf library.
. /usr/share/debconf/confmodule
# Zone
db_reset dnsbl-proxy/zone
db_input high dnsbl-proxy/zone || true
db_go

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Package: ospow-dnsbl-proxy
Version: 2.3
Architecture: amd64
Maintainer: root <gcolangelo@ospow.com>
Installed-Size: 40
Depends: debconf (>= 0.5) | debconf-2.0
Section: unknown
Priority: extra
Homepage: http://ospow.com
Description: Ospow DNSBL Proxy Server
A lightweight, performant DNSBL Proxy Server written in C using libevent.
Implements:
_ A cache mechanism to avoid useless queries
_ Direct interrogation of DNSBL servers
_ TXT record to get where IP is listed:

3
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f1afcd98c46e319ac8b15a6c410a65e4 usr/share/doc/ospow-dnsbl-proxy/README.Debian
65f6569564bb4943c04ebdffd0a84bfb usr/share/doc/ospow-dnsbl-proxy/changelog.gz
92d2e00ff235a266b8e8d4e6a46e8432 usr/share/doc/ospow-dnsbl-proxy/copyright

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#!/bin/sh
# postinst script for ospow-dnsbl-proxy
#
# see: dh_installdeb(1)
set -e
. /usr/share/debconf/confmodule
db_get dnsbl-proxy/zone
zone=$RET
case "$1" in
configure)
if [ ! -f /etc/ospow/dnsbl-proxy.conf ] ; then
mkdir -p /etc/ospow/
cat /usr/share/doc/ospow-dnsbl-proxy/dnsbl-proxy.conf.tpl | sed \
-e "s/@@ZONE@@/$zone/" > /etc/ospow/dnsbl-proxy.conf;
else
echo "Config ever exists, skipping ...";
fi
exit 0
;;
abort-upgrade|abort-remove|abort-deconfigure)
;;
*)
echo "postinst called with unknown argument \`$1'" >&2
exit 1
;;
esac
# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.
# Automatically added by dh_installinit
if [ -x "/etc/init.d/ospow-dnsbl-proxy" ]; then
if [ ! -e "/etc/init/ospow-dnsbl-proxy.conf" ]; then
update-rc.d ospow-dnsbl-proxy defaults >/dev/null
fi
invoke-rc.d ospow-dnsbl-proxy start || exit $?
fi
# End automatically added section
exit 0

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debian/ospow-dnsbl-proxy/DEBIAN/postrm vendored Executable file
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#!/bin/sh
set -e
# Automatically added by dh_installinit
if [ "$1" = "purge" ] ; then
update-rc.d ospow-dnsbl-proxy remove >/dev/null
fi
# End automatically added section
# Automatically added by dh_installdebconf
if [ "$1" = purge ] && [ -e /usr/share/debconf/confmodule ]; then
. /usr/share/debconf/confmodule
db_purge
fi
# End automatically added section

7
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#!/bin/sh
set -e
# Automatically added by dh_installinit
if [ -x "/etc/init.d/ospow-dnsbl-proxy" ]; then
invoke-rc.d ospow-dnsbl-proxy stop || exit $?
fi
# End automatically added section

4
debian/ospow-dnsbl-proxy/DEBIAN/templates vendored Normal file
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Template: dnsbl-proxy/zone
Type: string
Default: rbl.<yourdomain>
Description: DNS Zone that dnsbl-proxy will serve RBL records

129
debian/ospow-dnsbl-proxy/etc/init.d/ospow-dnsbl-proxy vendored Executable file
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#!/bin/sh
### BEGIN INIT INFO
# Provides: ospow-dnsbl-proxy
# Required-Start: $network $local_fs
# Required-Stop:
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: <Enter a short description of the sortware>
# Description: <Enter a long description of the software>
# <...>
# <...>
### END INIT INFO
# Author: root <gcolangelo@ospow.com>
# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="Ospow DNSBL Proxy" # Introduce a short description here
NAME=dnsbl-proxy # Introduce the short server's name here
DAEMON=/usr/sbin/dnsbl-proxy # Introduce the server's location here
DAEMON_ARGS="" # Arguments to run the daemon with
PIDFILE=/var/run/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME
# Exit if the package is not installed
[ -x $DAEMON ] || exit 0
# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] && . /etc/default/$NAME
# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh
# Define LSB log_* functions.
# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
. /lib/lsb/init-functions
#
# Function that starts the daemon/service
#
do_start()
{
$DAEMON # Add code here, if necessary, that waits for the process to be ready
}
#
# Function that stops the daemon/service
#
do_stop()
{
pid=$(pidof dnsbl-proxy)
if [ -n "$pid" ] ; then
kill $pid
kill -9 $pid
fi
}
#
# Function that sends a SIGHUP to the daemon/service
#
do_reload() {
#
# If the daemon can reload its configuration without
# restarting (for example, when it is sent a SIGHUP),
# then implement that here.
#
start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME
return 0
}
case "$1" in
start)
[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC " "$NAME"
do_start
case "$?" in
0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
esac
;;
stop)
[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
do_stop
case "$?" in
0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
esac
;;
status)
status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
;;
#reload|force-reload)
#
# If do_reload() is not implemented then leave this commented out
# and leave 'force-reload' as an alias for 'restart'.
#
#log_daemon_msg "Reloading $DESC" "$NAME"
#do_reload
#log_end_msg $?
#;;
restart|force-reload)
#
# If the "reload" option is implemented then remove the
# 'force-reload' alias
#
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do_stop
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0|1)
do_start
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exit 3
;;
esac
:

6
debian/ospow-dnsbl-proxy/usr/share/doc/ospow-dnsbl-proxy/README.Debian vendored Normal file
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@@ -0,0 +1,6 @@
ospow-dnsbl-proxy for Debian
----------------------------
<possible notes regarding this package - if none, delete this file>
-- root <gcolangelo@ospow.com> Thu, 31 Jan 2013 19:11:47 +0100

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48
debian/ospow-dnsbl-proxy/usr/share/doc/ospow-dnsbl-proxy/copyright vendored Normal file
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@@ -0,0 +1,48 @@
This work was packaged for Debian by:
Gérald COLANGELO <gcolangelo@ospow.com> on Thu, 31 Jan 2013 19:11:47 +0100
Upstream Author(s):
Gérald COLANGELO <gcolangelo@ospow.com>
Copyright:
<Copyright (C) 2013 Gérald COLANGELO>
License:
Redistribution and use in source and binary forms, with or without
modification, are permitted under the terms of the BSD License.
THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
On Debian systems, the complete text of the BSD License can be
found in "/usr/share/common-licenses/BSD".
The Debian packaging is:
Copyright (C) 2013 root <gcolangelo@ospow.com>
# Please chose a license for your packaging work. If the program you package
# uses a mainstream license, using the same license is the safest choice.
# Please avoid to pick license terms that are more restrictive than the
# packaged work, as it may make Debian's contributions unacceptable upstream.
# If you just want it to be GPL version 3, leave the following lines in.
and is licensed under the GPL version 3,
see "/usr/share/common-licenses/GPL-3".
# Please also look if there are files or directories which have a
# different copyright/license attached and list them here.

13
debian/rules vendored Executable file
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@@ -0,0 +1,13 @@
#!/usr/bin/make -f
# -*- makefile -*-
# Sample debian/rules that uses debhelper.
# This file was originally written by Joey Hess and Craig Small.
# As a special exception, when this file is copied by dh-make into a
# dh-make output file, you may use that output file without restriction.
# This special exception was added by Craig Small in version 0.37 of dh-make.
# Uncomment this to turn on verbose mode.
#export DH_VERBOSE=1
%:
dh $@

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@@ -0,0 +1 @@
3.0 (native)

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src/Makefile.am Normal file
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test_cache_CFLAGS = ${CFLAGS} -DTEST -DTEST_CACHE
test_tools_SOURCES = cache.c tools.c
test_tools_CFLAGS = ${CFLAGS} -DTEST -DTEST_TOOLS

551
src/Makefile.in Normal file
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@@ -0,0 +1,551 @@
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130
src/cache.c Normal file
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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <glib.h>
#include <time.h>
#include <sys/time.h>
#include <event2/event_struct.h>
#include <event2/event.h>
#include <event2/util.h>
#include "types.h"
#include "tools.h"
/*
* TODO:
* Thread Safe IT !!!!
* Add a function for freeing memory when item removed
*
*/
GHashTable *cache;
time_t cache_timeout;
record_t *get_cached_name(const char *name)
{
return ((record_t *) g_hash_table_lookup(cache, name));
}
void set_cache_name(char *name, gboolean listed, char *server)
{
record_t *c;
c = g_new0(record_t,1);
c->listed = listed;
c->name = g_strdup(name);
c->server = g_strdup(server);
c->ctime = time(NULL);
g_hash_table_insert(cache, name , c);
}
gboolean checkCacheItem(gpointer name, gpointer value, gpointer data)
{
record_t *item = value;
struct timeval *now,lifetime;
now = (struct timeval *) data;
timersub(now,item->ctime,&lifetime);
if(!timercmp(&lifetime,cacheTimeout,<=)){
g_debug("Purging entry %s %p",(char *) name,&name);
return(TRUE);
}
return (FALSE);
}
void dumpCacheItem(gpointer name, gpointer value, gpointer data)
{
record_t *item = value;
if (item->listed)
debug("%s on (%s).", (char *)name, item->server);
else
debug("%s clear.", (char *)name);
}
void cache_cleanup(struct event *timer)
{
int deleted = 0;
time_t now;
debug("Cleaning cache");
now = time(NULL);
deleted = g_hash_table_foreach_remove(cache, (GHRFunc) checkCacheItem, &now);
notice("Removed %d keys (%d in cache)", deleted, g_hash_table_size(cache));
}
void cache_dump()
{
g_hash_table_foreach(cache, dumpCacheItem, NULL);
}
void free_value(gpointer data)
{
record_t *r = (record_t *) data;
if(r->name)
g_free(r->name);
if (r->server)
g_free(r->server);
g_free(r);
}
void free_key(gpointer data)
{
if (data)
g_free(data);
}
void cache_init(time_t timeout)
{
cache = g_hash_table_new_full(g_str_hash, g_str_equal, free_key, free_value);
cache_timeout = timeout;
}
void cache_destroy()
{
g_hash_table_destroy(cache);
}
#ifdef TEST_CACHE
int main(int ac, char **av)
{
int i,j;
cache_init(1);
for (j=0; j<4 ; j++){
for (i=0; i< 500000; i++) {
char *pouet;
pouet = g_malloc(16);
sprintf(pouet,"%.5d",i);
set_cache_name(pouet,1,pouet);
}
printf("Sleeping before cleanup !\n");
sleep(3);
cache_cleanup(NULL);
printf("Sleeping after cleanup !\n");
sleep(3);
}
printf("Sleeping a bit again !\n");
sleep(10);
return(0);
}
#endif

323
src/config.c Normal file
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#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <sys/time.h>
#include <sys/types.h>
#include <signal.h>
#include <unistd.h>
#include <stdlib.h>
#include <pwd.h>
#include <glib.h>
#include <glib/gprintf.h>
#include <event2/event-config.h>
#include <event2/event.h>
#include <event2/dns.h>
#include <event2/dns_struct.h>
#include <event2/util.h>
#include "types.h"
#include "config.h"
#include "tools.h"
#include "dns.h"
void free_config()
{
struct dnsbl_server_t **ptr;
/* Allocated stuff */
g_free(config->zone);
g_free(config->logging);
g_free(config->server_list);
g_regex_unref(config->zone_regex);
/* Free dnsbl servers */
ptr = config->servers;
while (*ptr) {
struct dnsbl_server_t *srv = *ptr;
free(srv->name);
free(srv->fmt);
/* free srv->evdnsBase */
evdns_base_free(srv->evdnsBase,0);
free(srv);
ptr++;
}
/* Finish with event base */
if( event_base_loopexit(config->event_base,NULL) < 0)
error("abortion of event base failed !");
event_base_free(config->event_base);
g_free(config);
cache_destroy();
return;
}
void sig_handler(int signum)
{
error("In cleanup function !");
free_config();
}
int initialize_servers(char *value)
{
char **ptr, **ptrr;
int nb_srv = 0, i = 0;
ptr = ptrr = g_strsplit(value, ",", 30);
while (*(ptrr++))
nb_srv++;
notice("Configuring %d servers...", nb_srv);
config->servers = g_new0(struct dnsbl_server_t *,nb_srv + 1);
ptrr = ptr;
while (ptrr && *ptrr) {
char *tmp = "%d.%d.%d.%d.";
struct dnsbl_server_t *s;
g_strstrip(*ptrr);
s = config->servers[i] = g_malloc(sizeof(struct dnsbl_server_t));
s->name = g_strdup(*ptrr);
s->fmt = g_malloc(strlen(s->name) + strlen(tmp) + 1);
g_sprintf(s->fmt, "%s%s", tmp, s->name);
s->evdnsBase = NULL;
if (config_dnsbl_server(s, config->event_base) < 0) {
warning("NS record can't be found, server %s ignored !", s->name);
g_free(s->fmt);
g_free(s->name);
g_free(s);
} else {
message("%s OK.", s->name);
i++;
}
ptrr++;
}
config->servers[i] = 0;
config->nb_srv = i;
notice("%d/%d DNSBL servers configured.", config->nb_srv, nb_srv);
g_strfreev(ptr);
return (config->nb_srv);
}
void configure_logging(char *logging)
{
char **log;
log = g_strsplit(logging, ":", 2);
if (!strcmp(log[0], "syslog") && log[1]) {
int facility;
facility = resolve_facility(log[1]);
if (facility < 0) {
error("syslog facility %s isn't supported: \
choose between mail/daemon/syslog or \
local0 to local7", log[1]);
exit(0);
}
message("Logging to syslog (facility %s)\n", log[1]);
close(0);
close(1);
close(2);
openlog("ospow-dnsbl-proxy", LOG_PID, facility);
config->logger = log2syslog;
} else {
message("Other logging than syslog not supported yet logging to console.");
config->logger = log2stdout;
}
free(log);
}
void config_init(const char *path)
{
GKeyFile *kfile =NULL;
gchar **keys = NULL;
struct sockaddr_in sa;
struct passwd *nobody;
struct timeval tv;
int i, ii = 0;
config = g_new0(struct config_t, 1);
/* Set defaults that differs from NULL/0 ... */
config->timeout = 1;
/* We set this temporary, to get logs ... */
config->logger = log2stdout;
config->logging = "syslog:daemon";
config->cache_timeout = 3600;
config->port = 53;
config->loglevel = G_LOG_LEVEL_INFO;
/* Parse our files */
kfile = g_key_file_new();
debug("Parsing %s", path);
/* Load file */
if (!g_key_file_load_from_file(kfile, path, G_KEY_FILE_NONE, NULL)) {
error("Error while loading %s, is it a correct .ini file ?", path);
goto cleanExit;
}
/* Check if general section is available */
if (!g_key_file_has_group(kfile, "general")) {
error("%s doesn't have [general] section, skipping ...", path);
goto cleanExit;
}
/* Retrieve all keys ... */
if (!(keys = g_key_file_get_keys(kfile, "general", NULL, NULL))) {
error("Failed to load keys from %s", path);
goto cleanExit;
}
/* Now, read the conf and store important parts */
while (keys[ii]) {
char *value;
value = g_key_file_get_value(kfile, "general", keys[ii], NULL);
if (!strcmp(keys[ii], "log"))
config->logging = g_strdup(value);
/* Parse Timeout */
else if (!strcmp(keys[ii], "timeout")) {
config->timeout = atoi(value);
debug("timeout is %d sec", config->timeout);
}
/* Parse Cache Timeout */
else if (!strcmp(keys[ii], "cache_timeout")) {
config->cache_timeout = atof(value);
debug("cache timeout is %d sec", config->cache_timeout);
}
/* Parse Zone */
else if (!strcmp(keys[ii], "zone")) {
char *begin = "(\\d{0,3}).(\\d{0,3}).(\\d{0,3}).(\\d{0,3}).";
gchar *pattern;
config->zone = g_strdup(value);
pattern = g_malloc(strlen(begin) + strlen(config->zone) + 3);
g_sprintf(pattern, "^%s%s$", begin, config->zone);
debug("Pattern for zone is %s", pattern);
config->zone_regex = g_regex_new(pattern, G_REGEX_CASELESS, 0, NULL);
g_free(pattern);
}
/* Debug mode ?? */
else if (!strcmp(keys[ii], "debug")) {
config->debug = atoi(value);
}
/* Server list... we'll parse later ! */
else if (!strcmp(keys[ii], "server_list")) {
config->server_list = g_strdup(value);
}
/* UDP port to listen to ... */
else if (!strcmp(keys[ii], "port")) {
config->port = atoi(value);
if (config->port < 0 || config->port > 65535)
error("%d isn't a valid UDP port number.", config->port);
} else if (!strcmp(keys[ii], "loglevel")) {
if (!strcmp("ERROR", value)) {
config->loglevel = LOG_ERR;
} else if (!strcmp("WARNING", value)) {
config->loglevel = LOG_WARNING;
} else if (!strcmp("NOTICE", value)) {
config->loglevel = LOG_NOTICE;
} else if (!strcmp("INFO", value)) {
config->loglevel = LOG_INFO;
} else if (!strcmp("DEBUG", value)) {
config->loglevel = LOG_DEBUG;
} else {
error("Loglevel %s not supported, choose (verbosity increasing) ERROR, WARNING, NOTICE, INFO or DEBUG",
value);
exit(EXIT_FAILURE);
}
message("Logging to level %s", value);
}
ii++;
g_key_file_remove_key(kfile,"general",keys[ii],NULL);
g_free(value);
}
g_key_file_remove_group(kfile,"general",NULL);
g_strfreev(keys);
g_key_file_free(kfile);
/* Binding signal */
signal(SIGSTOP,sig_handler);
signal(SIGTERM,sig_handler);
signal(SIGINT,sig_handler);
/* If we aren't in mode debug, daemonize */
if (!config->debug) {
int pid;
/* First, change working dir */
if (chdir("/") < 0)
error("Failed while chdir()-ing: %s", strerror(errno));
/* The fork() and setsid() */
pid = fork();
if (pid < 0)
error("Failed while fork()-ing ... ");
else if (pid > 0) {
exit(0);
}
/* We're in child */
if (setsid() < 0)
error("Failed while setsid()-ing ... ");
/* Configure logging ... */
configure_logging(config->logging);
event_set_log_callback(logevent_logger);
evdns_set_log_fn(logevent_logger);
}else{
notice("Skipping daemonization process (debug mode activated)");
}
/* Create event base */
if (!(config->event_base = event_base_new()))
error("Failed while creating event base, fatal !");
/* Now we initialize servers */
if (initialize_servers(config->server_list) < 0)
error("We don't have any working DNSBL server configured (all of them failed) ... exiting !");
/* Here we must have timeout and servers list set , so we can now set timeout on evdns_base */
for (i = 0; i < config->nb_srv; i++) {
char timeout[256];
g_snprintf(timeout, 255, "%i", config->timeout);
evdns_base_set_option(config->servers[i]->evdnsBase, "timeout", timeout);
evdns_base_set_option(config->servers[i]->evdnsBase, "initial-probe-timeout", timeout);
evdns_base_set_option(config->servers[i]->evdnsBase, "max-timeouts:", "1");
}
/* Open UDP port, bind it and give it to libevent */
if ((config->s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
fatal("Failed to create socket: %s", strerror(errno));
}
evutil_make_socket_nonblocking(config->s);
sa.sin_family = AF_INET;
sa.sin_port = htons(config->port);
sa.sin_addr.s_addr = INADDR_ANY;
if (bind(config->s, (struct sockaddr *)&sa, sizeof(sa)) < 0) {
fatal("Failed to bind socket: %s", strerror(errno));
}
evdns_add_server_port_with_base(config->event_base, config->s, 0, dns_server_callback, NULL);
/* Add a timer for cache cleanup */
config->timer_ev = event_new(config->event_base, -1, EV_PERSIST, (event_callback_fn) cache_cleanup, NULL);
tv.tv_sec = config->cache_timeout;
tv.tv_usec = 0;
evtimer_add(config->timer_ev, &tv);
/* Change user, security, security ... */
if (config->debug == 0) {
if (!(nobody = getpwnam("nobody"))) {
fatal("User nobody doesn't exist, can't set{e,}uid() ! Fatal !");
}
if (!setegid(nobody->pw_gid) && !seteuid(nobody->pw_uid)) {
message("Successfuly changed user to nobody");
} else {
fatal("Failed changing user to nobody, fatal");
}
}
notice("DNSBL Proxy successfully launched !");
return;
cleanExit:
exit(0);
}

6
src/config.h Normal file
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@@ -0,0 +1,6 @@
#ifndef OSPOW_CONFIG_H
#define OSPOW_CONFIG_H
struct config_t *config;
#endif

273
src/dns.c Normal file
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@@ -0,0 +1,273 @@
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <stdlib.h>
#include <glib.h>
#include <glib/gprintf.h>
#include <event2/event-config.h>
#include <event2/event.h>
#include <event2/dns_struct.h>
#include <event2/dns.h>
#include <event2/util.h>
#include "types.h"
#include "config.h"
#include "tools.h"
GSList *questions;
long int localhost = 0x0100007F;
float get_timespent(struct timespec b, struct timespec e)
{
float ret = 0;
#ifdef TIMEMEASURE
int tmp;
ret = (e.tv_nsec * .000001) - (b.tv_nsec * .000001);
tmp = (int)(e.tv_sec - b.tv_sec) * 1000;
ret += tmp;
#endif
return (ret);
}
int send_answer(struct evdns_server_request *r, int ret, void *value, struct timespec *timestamp)
{
struct timespec end;
/* TTL hardcoded to 10 */
if (value) {
if (r->questions[0]->type == EVDNS_TYPE_A)
evdns_server_request_add_a_reply(r, r->questions[0]->name, 1, (int *)value, 10);
else if (strcmp(value, "")) {
char *tmp = g_strdup(value);
char *tmp2 = tmp;
do {
if (*tmp2 == '.')
*tmp2 = '_';
} while (*(++tmp2));
tmp2 = g_malloc(sizeof(char) * 63);
snprintf(tmp2, 63, "dnsbl: %s", tmp);
evdns_server_request_add_reply(r, EVDNS_ANSWER_SECTION, r->questions[0]->name, EVDNS_TYPE_TXT,
EVDNS_CLASS_INET, 10, -1, 1, tmp2);
g_free(tmp2);
g_free(tmp);
}
}
if (evdns_server_request_respond(r, ret) < 0)
return (-1);
if (timestamp) {
#ifdef TIMEMEASURE
clock_gettime(CLOCK_REALTIME, &end);
#endif
debug("time elapse after sending response: %f", get_timespent(*timestamp, end));
}
return (0);
}
void dns_question_callback(int result, char type, int count, int ttl, void *addresses, void *arg)
{
struct pending_request_t *pr;
struct dnsbl_server_t *srv;
struct cb_datas_t *cb_data;
cb_data = (struct cb_datas_t *)arg;
pr = cb_data->req;
srv = cb_data->srv;
pr->pending_srv--;
debug("%p %p %p %p\n",pr->client,pr->original_ip,pr->srv,pr);
switch (result) {
case DNS_ERR_NONE:
if (count > 0) {
pr->listed = TRUE;
debug("[%s] %s is listed by %s", pr->client, pr->original_ip, srv->name);
pr->srv[pr->srv_idx] = srv->name;
pr->srv_idx++;
break;
}
case DNS_ERR_NOTEXIST:
debug("[%s] %s is not listed by %s", pr->client, pr->original_ip, srv->name);
break;
default:
notice("[%s] %s failed to resolv with %s [ret:%d|type:%d|count:%d|ttl:%d]",
pr->client, pr->original_ip, srv->name, result, type, count, ttl);
}
/* We aren't waiting for any result anymore, so let's answer and cache it ! */
if (pr->pending_srv <= 0) {
char status[255] = "not listed";
void *tmp = NULL;
char *name;
int type = pr->r->questions[0]->type;
int err = DNS_ERR_NONE;
#ifdef TIMEMEASURE
struct timespec end;
#endif
if (pr->listed) {
if (pr->srv_idx <= 1) {
g_strlcpy(status, pr->srv[0], 255);
} else {
char *tmp1;
tmp1 = g_strjoinv("/", pr->srv);
/* Max length for a TXT record is 255 bytes */
g_snprintf(status, 254, "%s", tmp1);
g_free(tmp1);
}
if (type == EVDNS_TYPE_TXT) {
tmp = (void *)status;
} else {
tmp = &localhost;
}
} else {
err = DNS_ERR_NOTEXIST;
}
/* Make answer authoritative */
name = g_strdup(pr->r->questions[0]->name);
/* Answer */
#ifdef TIMEMEASURE
clock_gettime(CLOCK_REALTIME, &end);
#endif
if (send_answer(pr->r, err, tmp, &pr->timestamp) < 0)
error("Got a pb while sending answer !");
else
#ifdef TIMEMEASURE
message("[%s] response sent in %4fsec : %s is %s%s", pr->client,
get_timespent(pr->timestamp, end),
name, pr->listed ? "listed on " : "not listed", pr->listed ? status : "");
#else
message("[%s] response sent: %s is %s%s", pr->client,
name, pr->listed ? "listed on " : "not listed", pr->listed ? status : "");
#endif
/* Then we cache */
debug("[%s] Adding answer to cache", pr->client);
set_cache_name(name, pr->listed, status);
debug("%p %p %p %p\n",pr->client,pr->original_ip,pr->srv,pr);
g_free(pr->client);
g_free(pr->original_ip);
g_free(pr->srv);
g_free(pr);
}
g_free(cb_data);
}
void dns_server_callback(struct evdns_server_request *r, void *data)
{
int i;
struct sockaddr_in client_sa;
GMatchInfo *match = NULL;
char *client = NULL;
/* Fetch client IP */
evdns_server_request_get_requesting_addr(r, (struct sockaddr *)&client_sa, sizeof(struct sockaddr_in));
client = g_strdup(inet_ntoa(client_sa.sin_addr));
/* Won't handle multiple questions this time ... */
// for (i=0;i<r->nquestions;i++)
i = 0;
do {
record_t *cache;
int j = 0;
unsigned char ip[4] = { 0, 0, 0, 0 };
struct dnsbl_server_t **ptr;
struct pending_request_t *req;
message("[%s] request for %s", client, r->questions[i]->name);
/* Send back error if request isn't A or TXT field */
if (r->questions[i]->type != EVDNS_TYPE_A && r->questions[i]->type != EVDNS_TYPE_TXT) {
debug("[%s] Request type not supported %d", client, r->questions[i]->type);
goto error;
}
/* Is the name ever cached ? Serve as it if it is ! */
cache = get_cached_name(r->questions[i]->name);
if (cache) {
message("[%s] request hit cache ( %s %s )", client, cache->listed ? "listed by" : "unlisted",
cache->server);
send_answer(r, cache->listed ? DNS_ERR_NONE : DNS_ERR_NOTEXIST,
r->questions[i]->type == EVDNS_TYPE_A ? (void *)&localhost : (void *)cache->server,
NULL);
return;
}
/* Apply a "our served zone" regexp to r->questions[i]->name,
* if it doesn't, send error */
if (!g_regex_match(config->zone_regex, r->questions[i]->name, 0, &match)) {
debug("[%s] Don't know what to do with name %s !", client, r->questions[i]->name);
g_match_info_free(match);
goto error;;
}
/* Retrieve 4 bytes of queried IP adress */
while (g_match_info_matches(match)) {
for (j = 1; j <= 4; j++) {
char *tmp;
tmp = g_match_info_fetch(match, j);
ip[j - 1] = atoi(tmp);
g_free(tmp);
}
g_match_info_next(match, NULL);
}
g_match_info_free(match);
/* Building context struct to pass to callback */
req = g_new0(struct pending_request_t,1);
req->r = r;
req->client = client;
req->original_ip = g_new0(char,16);
req->pending_srv = config->nb_srv;
req->srv = g_new0(char *,config->nb_srv + 1);
req->srv_idx = 0;
req->listed = FALSE;
debug("%p %p %p %p\n",req->client,req->original_ip,req->srv,req);
g_snprintf(req->original_ip, 15, "%u.%u.%u.%u", ip[3], ip[2], ip[1], ip[0]);
#ifdef TIMEMEASURE
clock_gettime(CLOCK_REALTIME, &(req->timestamp));
#endif
message("[%s] Dispatching query %s for %s!", client,
r->questions[i]->type == EVDNS_TYPE_TXT ? "TXT" : "A", req->original_ip);
/* Now, query this is on each dnsbl servers */
ptr = config->servers;
do {
char *name;
/* prepare datas for callback */
struct cb_datas_t *datas;
datas = g_malloc(sizeof(struct cb_datas_t));
datas->req = req;
datas->srv = *ptr;
name = g_malloc(strlen((*ptr)->fmt) + 13);
g_sprintf(name, (*ptr)->fmt, ip[0], ip[1], ip[2], ip[3]);
evdns_base_resolve_ipv4((*ptr)->evdnsBase, name, DNS_QUERY_NO_SEARCH,
dns_question_callback, datas);
g_free(name);
} while (*(++ptr));
} while (0); // Only one question ...
return;
error:
g_free(match);
if (evdns_server_request_respond(r, DNS_ERR_REFUSED) < 0)
error("Failed sending response !");
g_free(client);
return;
}

3
src/dns.h Normal file
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void dns_question_callback(int result,char type, int count, int ttl, void *addresses, void *arg);
void dns_server_callback(struct evdns_server_request *r, void *data);

53
src/main.c Normal file
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@@ -0,0 +1,53 @@
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <glib.h>
#include <event2/event-config.h>
#include <event2/event.h>
#include <event2/event_struct.h>
#include <event2/dns_struct.h>
#include <event2/dns.h>
#include <event2/util.h>
#include "types.h"
#include "config.h"
#include "tools.h"
#include "dns.h"
int sighandler(int signum, void *a)
{
}
/*
* TODO:
* _ Implement signal catching to stop server
* _ Implement pidfile.
* _
*/
int main(int ac, char **av)
{
if (ac == 2)
config_init(av[1]);
else
config_init("/etc/ospow/dnsbl-proxy.conf");
cache_init(config->cache_timeout);
/* Set logging callback */
//event_set_log_callback(logevent_logger);
event_base_dispatch(config->event_base);
/* Ending ... */
message("Event loop stopped ... exiting !");
cache_destroy();
exit(EXIT_SUCCESS);
}

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71
src/tests.c Normal file
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <glib.h>
#include <syslog.h>
#include <event2/event-config.h>
#include <event2/event.h>
#include <event2/event_struct.h>
#include <event2/dns_struct.h>
#include <event2/dns.h>
#include <event2/util.h>
#include "types.h"
#include "config.h"
#include "tools.h"
#include "dns.h"
int test_cache()
{
struct timeval timeout;
printf("Test cache");
timeout.tv_sec = 5;
timeout.tv_usec = 0;
cache_init(&timeout);
debug("t = 0\n");
set_cache_name("Test 1", TRUE, "test.org");
set_cache_name("Test 2", FALSE, NULL);
set_cache_name("Test 3", TRUE, "google.fr");
cache_dump();
sleep(3);
debug("t = 3\n");
set_cache_name("Test 4", FALSE, NULL);
set_cache_name("Test 5", FALSE, NULL);
sleep(2);
debug("t = 5\n");
cache_cleanup();
cache_dump();
sleep(10);
debug("t = 15\n");
cache_cleanup();
cache_dump();
return (0);
}
int test_config()
{
debug("%d debug", G_LOG_LEVEL_DEBUG);
message("%d info", G_LOG_LEVEL_INFO);
error("%d error", G_LOG_LEVEL_ERROR);
config_init("/etc/ospow/dnsbl-proxy.conf");
debug("%d debug", G_LOG_LEVEL_DEBUG);
message("%d info", G_LOG_LEVEL_INFO);
error("%d error", G_LOG_LEVEL_ERROR);
return (0);
}
int main(int ac, char **av)
{
printf("taille d'1 enregistrement %d\n", sizeof(record_t));
test_config();
test_cache();
}

328
src/tools.c Normal file
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#define _BSD_SOURCE
#include <netinet/ip.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <arpa/nameser.h>
#include <resolv.h>
#include <stdlib.h>
#include <string.h>
#include <event2/event-config.h>
#include <event2/event.h>
#include <event2/dns.h>
#include <event2/dns_struct.h>
#include <event2/util.h>
#include "types.h"
#include "tools.h"
#define rdata_to_long(rdata) do { } while(0);
/* Taken "as is" from syslog.h */
#define INTERNAL_NOPRI 0x10
#ifndef TEST
extern struct config_t *config;
#endif
typedef struct _code {
char *c_name;
int c_val;
} CODE;
CODE prioritynames[] =
{
{ "alert", LOG_ALERT },
{ "crit", LOG_CRIT },
{ "debug", LOG_DEBUG },
{ "emerg", LOG_EMERG },
{ "err", LOG_ERR },
{ "error", LOG_ERR }, /* DEPRECATED */
{ "info", LOG_INFO },
{ "none", INTERNAL_NOPRI }, /* INTERNAL */
{ "notice", LOG_NOTICE },
{ "panic", LOG_EMERG }, /* DEPRECATED */
{ "warn", LOG_WARNING }, /* DEPRECATED */
{ "warning", LOG_WARNING },
{ NULL, -1 }
};
int resolve_facility(char *facility)
{
GString *string = g_string_new(facility);
g_string_ascii_down(string);
char *f = (char *)string->str;
if (!strcmp("mail", f))
return LOG_MAIL;
if (!strcmp("daemon", f))
return LOG_DAEMON;
if (!strcmp("syslog", f))
return LOG_SYSLOG;
if (!strcmp("local0", f))
return LOG_LOCAL0;
if (!strcmp("local1", f))
return LOG_LOCAL1;
if (!strcmp("local2", f))
return LOG_LOCAL2;
if (!strcmp("local3", f))
return LOG_LOCAL3;
if (!strcmp("local4", f))
return LOG_LOCAL4;
if (!strcmp("local5", f))
return LOG_LOCAL5;
if (!strcmp("local6", f))
return LOG_LOCAL6;
if (!strcmp("local7", f))
return LOG_LOCAL7;
g_string_free(string, TRUE);
return (-1);
}
void logevent_logger(int severity, const char *msg)
{
debug("libevent(%d): %s", severity, msg);
}
void log2stdout(int severity, const char *fmt, va_list list)
{
char *fmt2;
int i=0;
CODE *sname;
sname = prioritynames;
while(sname[i].c_val != severity)
i++;
fmt2 = malloc(sizeof(char) * (strlen(fmt) + 50));
sprintf(fmt2,"[%s] %s\n",
sname[i].c_name ? sname[i].c_name : "UNKNOWN",
fmt);
vprintf(fmt2,list);
free(fmt2);
}
void log2syslog(int severity, const char *fmt, va_list list)
{
vsyslog(severity,fmt,list);
}
void dns_log(int severity, const char *fmt, ...)
{
va_list list;
va_start(list, fmt);
#ifndef TEST
if (!config->loglevel || severity > config->loglevel)
goto end;
if (config->logger)
config->logger(severity,fmt,list);
else
#endif
log2stdout(severity,fmt,list);
end:
va_end(list);
return;
}
struct sockaddr_in **get_domain_ns_fallback(char *domain)
{
unsigned char answer[8192];
struct sockaddr_in **ns = NULL;
int ii, i = 0, j = 0, ret = 0, nb_servers = 0;
ns_msg parser;
ns_rr rr;
debug("In %s(%s)", __FUNCTION__, domain);
ret = res_query(domain, C_IN, T_A, answer, 8192);
if (ret < 0) {
debug(" Got no result for %s", domain);
return (NULL);
}
if (ns_initparse(answer, ret, &parser) < 0) {
debug(" Failed to ns_initparse() for %s", domain);
return (NULL);
}
for (ii = 0; ii < 3; ii++) {
ret = ns_msg_count(parser, ns_s_an);
if (ret < 0) {
debug(" Failed to ns_msg_count() for %s", domain);
return (NULL);
}
/* We limit to 5 servers ... */
debug(" Got %d records", ret);
nb_servers = (ret > 5) ? 5 : ret;
ns = calloc(nb_servers + 1, sizeof(struct sockaddr *));
j = 0;
for (i = 0; i < nb_servers; i++) {
char rName[MAXDNAME];
ns_parserr(&parser, ns_s_an, i, &rr);
debug(" ns_rr_type is %d", ns_rr_type(rr));
if (ns_rr_type(rr) == ns_t_ns) {
if (ns_name_uncompress(ns_msg_base(parser), ns_msg_end(parser),
ns_rr_rdata(rr), rName, MAXDNAME) >= 0) {
/* Code below seems to create problem in a static binary :( */
int rv;
struct addrinfo *r;
struct addrinfo hint;
hint.ai_family = AF_INET;
hint.ai_socktype = SOCK_DGRAM;
hint.ai_protocol = 0;
hint.ai_flags = AI_NUMERICSERV;
/* XXX: Here, an array may be returned (Round Robin, ...) but we only deal with first element */
if (!(rv = getaddrinfo(rName, "53", &hint, &r))) {
struct sockaddr_in *addr;
addr = (struct sockaddr_in *)r->ai_addr;
ns[j] = malloc(sizeof(struct sockaddr_in));
memcpy(ns[j], addr, sizeof(struct sockaddr_in));
debug(" addr is %s", inet_ntoa(ns[j]->sin_addr));
j++;
freeaddrinfo(r);
} else {
debug("error while resolving %s : %s\n", rName, gai_strerror(rv));
}
}
} else if (ns_rr_type(rr) == ns_t_a) {
struct in_addr tmp;
memcpy(&(tmp.s_addr), ns_rr_rdata(rr), ns_rr_rdlen(rr));
debug(" addr is %s", inet_ntoa(tmp));
}
}
ns[j] = 0;
}
return (ns);
}
/*
* TODO: review this code.
*/
struct sockaddr_in **get_domain_ns(char *domain)
{
unsigned char answer[81920];
struct sockaddr_in **ns = NULL;
int i = 0, j = 0, ret = 0, nb_servers = 0;
ns_msg parser;
ns_rr rr;
res_init();
ret = res_query(domain, C_IN, T_NS, answer, 81920);
if (ret < 0) {
debug(" Got no result for %s", domain);
return (NULL);
}
if (ns_initparse(answer, ret, &parser) < 0) {
debug(" Failed to ns_initparse() for %s", domain);
return (NULL);
}
ret = ns_msg_count(parser, ns_s_an);
if (ret < 0) {
debug(" Failed to ns_msg_count() for %s", domain);
return (NULL);
}
/* We limit to 5 servers ... */
debug(" Got %d records", ret);
nb_servers = (ret > 5) ? 5 : ret;
ns = calloc(nb_servers + 1, sizeof(struct sockaddr *));
j = 0;
for (i = 0; i < nb_servers; i++) {
char rName[MAXDNAME];
ns_parserr(&parser, ns_s_an, i, &rr);
if (ns_rr_type(rr) == ns_t_ns) {
if (ns_name_uncompress(ns_msg_base(parser), ns_msg_end(parser),
ns_rr_rdata(rr), rName, MAXDNAME) >= 0) {
/* Code below seems to create problem in a static binary :( */
int rv;
struct addrinfo *r;
struct addrinfo hint;
hint.ai_family = AF_INET;
hint.ai_socktype = SOCK_DGRAM;
hint.ai_protocol = 0;
hint.ai_flags = AI_NUMERICSERV;
/* XXX: Here, an array may be returned (Round Robin, ...) but we only deal with first element */
if (!(rv = getaddrinfo(rName, "53", &hint, &r))) {
struct sockaddr_in *addr;
addr = (struct sockaddr_in *)r->ai_addr;
ns[j] = malloc(sizeof(struct sockaddr_in));
memcpy(ns[j], addr, sizeof(struct sockaddr_in));
debug(" addr is %s", inet_ntoa(ns[j]->sin_addr));
j++;
freeaddrinfo(r);
} else {
debug(" error while resolving %s : %s\n", rName, gai_strerror(rv));
}
} else {
debug(" ns_name_uncompres() failed");
}
} else {
debug("ns record isn't in good type");
}
}
ns[j] = 0;
return (ns);
}
int config_dnsbl_server(struct dnsbl_server_t *s, struct event_base *base)
{
struct sockaddr_in **nameservers, **ptr;
ptr = nameservers = get_domain_ns(s->name);
if (!nameservers || !(*nameservers)) {
debug(" Failed while configuring %s.", s->name);
return (-1);
}
s->evdnsBase = evdns_base_new(base, 0);
evdns_base_search_clear(s->evdnsBase);
while (ptr && *ptr) {
if (!
(evdns_base_nameserver_sockaddr_add
(s->evdnsBase, (const struct sockaddr *)*ptr, sizeof(struct sockaddr_in), 0))) {
debug(" registered %s successfuly.", inet_ntoa((*ptr)->sin_addr));
} else {
debug(" failed to register %s.", inet_ntoa((*ptr)->sin_addr));
}
free(*ptr);
ptr++;
}
free(nameservers);
return (0);
}
#ifdef TEST_TOOLS
int main(int ac, char **av)
{
if (ac == 2) {
message("Resolving %s", av[1]);
get_domain_ns(av[1]);
get_domain_ns_fallback(av[1]);
} else {
printf("usage: %s <domain>", av[0]);
}
return (0);
}
#endif

36
src/tools.h Normal file
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@@ -0,0 +1,36 @@
#ifndef OSPOW_TOOL_H
#define OSPOW_TOOL_H
void config_init(const char *path);
struct sockaddr_in **get_domain_ns(char *domain);
int config_dnsbl_server(struct dnsbl_server_t *s, struct event_base *base);
void logevent_logger(int severity, const char *msg);
void dns_log(int severity, const char *fmt, ...);
int resolve_facility(char *facility);
void log2stdout(int severity, const char *fmt, va_list list);
void log2syslog(int severity, const char *fmt, va_list list);
record_t *get_cached_name(const char *name);
void cache_cleanup(struct event *);
void set_cache_name(char *name, gboolean listed, char *server);
void cache_init(time_t timeout);
void cache_destroy();
float get_timespent(struct timespec b, struct timespec e);
int send_answer(struct evdns_server_request *r, int ret, void *value, struct timespec *timestamp);
#include <syslog.h>
#define message(fmt, ...) dns_log(LOG_INFO, fmt, ##__VA_ARGS__)
#define notice(fmt, ...) dns_log(LOG_NOTICE, fmt, ##__VA_ARGS__)
#define warning(fmt, ...) dns_log(LOG_WARNING, fmt, ##__VA_ARGS__)
#define error(fmt, ...) dns_log(LOG_ERR, fmt, ##__VA_ARGS__)
#define fatal(fmt, ...) do { dns_log(LOG_ERR, fmt, ##__VA_ARGS__); exit(EXIT_FAILURE); }while(0)
#define debug(fmt, ...) dns_log(LOG_DEBUG, fmt, ##__VA_ARGS__)
#endif

62
src/types.h Normal file
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#ifndef OSPOW_TYPES_H
#define OSPOW_TYPES_H
#include <glib.h>
#include <sys/types.h>
#include <sys/time.h>
typedef struct {
char *name;
char *server;
gboolean listed;
time_t ctime;
} record_t;
struct dnsbl_server_t {
char *name;
char *fmt;
struct evdns_base *evdnsBase;
} dnsbl_server_t;
struct config_t {
int s;
int port;
struct event_base *event_base;
struct event *timer_ev;
char *zone;
GRegex *zone_regex;
char *logging;
void (*logger) (int, const char *, va_list);
int timeout;
time_t cache_timeout;
int nb_srv;
int loglevel;
char *server_list;
struct dnsbl_server_t **servers;
short debug;
} config_t;
struct result_t {
struct dnsbl_server_t *server;
gboolean listed;
} result_t;
struct pending_request_t {
struct evdns_server_request *r;
char *client;
char *original_ip;
int pending_srv;
gboolean listed;
char **srv;
int srv_idx;
struct timespec timestamp;
char msg[255];
} pending_request_t;
struct cb_datas_t {
struct pending_request_t *req;
struct dnsbl_server_t *srv;
} cb_datas_t;
#endif