From 14d1bc91e4d17c70002df5dd6778c7bab1cc92d2 Mon Sep 17 00:00:00 2001
From: bolvan <k@vodka.home.kg>
Date: Sun, 5 May 2019 12:00:44 +0300
Subject: [PATCH] support for centos 7+, fedora

---
 init.d/debian/zapret | 38 ++++++++++++++++++++++++++++-----
 install_easy.sh      | 50 +++++++++++++++++++++++++++++---------------
 readme.txt           | 18 +++++++++++++---
 uninstall_easy.sh    |  9 ++++++--
 4 files changed, 88 insertions(+), 27 deletions(-)

diff --git a/init.d/debian/zapret b/init.d/debian/zapret
index 2a9491f..ba60c37 100755
--- a/init.d/debian/zapret
+++ b/init.d/debian/zapret
@@ -72,7 +72,7 @@ prepare_tpws()
 	# $TPWS_USER is required to prevent redirection of the traffic originating from TPWS itself
 	# otherwise infinite loop will occur
 	# also its good idea not to run tpws as root
-	adduser --disabled-login --no-create-home --system --quiet $TPWS_USER
+	id -u $TPWS_USER >/dev/null 2>/dev/null || adduser --no-create-home --system --shell /bin/false $TPWS_USER
 	# otherwise linux kernel will treat 127.0.0.1 as "martian" ip and refuse routing to it
 	# NOTE : kernels <3.6 do not have this feature. consider upgrading or change DNAT to REDIRECT and do not bind to 127.0.0.1
 	for iface in /proc/sys/net/ipv4/conf/*; do sysctl -qw net.ipv4.conf.$(basename $iface).route_localnet=1; done
@@ -134,6 +134,10 @@ fw_nfqws_del_post()
 	true
 }
 
+exists()
+{
+	which $1 >/dev/null 2>/dev/null
+}
 run_daemon()
 {
 	# $1 - daemon string id or number. can use 1,2,3,...
@@ -141,9 +145,22 @@ run_daemon()
 	# $3 - daemon args
 	# use $PIDDIR/$DAEMONBASE$1.pid as pidfile
 	local DAEMONBASE=$(basename $2)
+	local PIDFILE=$PIDDIR/$DAEMONBASE$1.pid
 	echo "Starting daemon $1: $2 $3"
-	start-stop-daemon --start --quiet --pidfile $PIDDIR/$DAEMONBASE$1.pid --background --make-pidfile \
-		--exec $2 -- $3
+	if exists start-stop-daemon ; then
+		start-stop-daemon --start --quiet --pidfile "$PIDFILE" --background --make-pidfile \
+			--exec "$2" -- $3
+	elif exists daemonize ; then
+		daemonize -p "$PIDFILE" "$2" $3
+	else
+		nohup "$2" $3 >/dev/null 2>/dev/null &
+		PID=$(jobs -p %1)
+		if [ -n "$PID" ]; then
+			echo $PID >$PIDFILE
+		else
+			echo could not start daemon $1 : $2 $3
+		fi
+	fi
 }
 stop_daemon()
 {
@@ -151,9 +168,20 @@ stop_daemon()
 	# $2 - daemon
 	# use $PIDDIR/$DAEMONBASE$1.pid as pidfile
 	local DAEMONBASE=$(basename $2)
+	local PIDFILE=$PIDDIR/$DAEMONBASE$1.pid
 	echo "Stopping daemon $1: $2"
-	start-stop-daemon --oknodo --stop --quiet --pidfile $PIDDIR/$DAEMONBASE$1.pid \
-		--exec $2
+	if exists start-stop-daemon ; then
+		start-stop-daemon --oknodo --stop --quiet --pidfile "$PIDFILE" \
+			--exec "$2"
+	else
+		if [ -f "$PIDFILE" ]; then
+			read PID <"$PIDFILE"
+			kill $PID
+		else
+			echo no pidfile : $PIDFILE
+			false
+		fi
+	fi
 }
 
 
diff --git a/install_easy.sh b/install_easy.sh
index 44448a2..2e0e870 100755
--- a/install_easy.sh
+++ b/install_easy.sh
@@ -2,12 +2,21 @@
 
 # automated script for easy installing zapret on systemd based system
 # all required tools must be already present or system must use apt as package manager
-# if its not apt based system then manually install ipset, curl, lsb-core
+# if its not apt or yum based system then manually install ipset, curl, lsb-core
+
+exists()
+{
+	which $1 >/dev/null 2>/dev/null
+}
+whichq()
+{
+	which $1 2>/dev/null
+}
 
 [ $(id -u) -ne "0" ] && {
 	echo root is required
-	which sudo >/dev/null && exec sudo $0
-	which su >/dev/null && exec su -c $0
+	exists sudo && exec sudo $0
+	exists su && exec su -c $0
 	echo su or sudo not found
 	exit 2
 }
@@ -22,7 +31,6 @@ INIT_SCRIPT=/etc/init.d/zapret
 GET_IPLIST=$EXEDIR/ipset/get_antizapret.sh
 GET_IPLIST_PREFIX=$EXEDIR/ipset/get_
 
-
 exitp()
 {
 	echo
@@ -34,7 +42,7 @@ exitp()
 
 echo \* checking system ...
 
-SYSTEMCTL=$(which systemctl)
+SYSTEMCTL=$(whichq systemctl)
 [ ! -x "$SYSTEMCTL" ] && {
 	echo not systemd based system
 	exitp 5
@@ -73,25 +81,33 @@ echo running from $EXEDIR
 
 echo \* checking prerequisites ...
 
-if [ ! -x "$LSB_INSTALL" ] || [ ! -x "$LSB_REMOVE" ] || ! which ipset >/dev/null || ! which curl >/dev/null ; then
+if [ -x "$LSB_INSTALL" ] && [ -x "$LSB_REMOVE" ] && exists ipset && exists curl ; then
+	echo everything is present
+else
 	echo \* installing prerequisites ...
 
-	APTGET=$(which apt-get)
-	[ ! -x "$APTGET" ] && {
-		echo not apt based system
+	APTGET=$(whichq apt-get)
+	YUM=$(whichq yum)
+	if [ -x "$APTGET" ] ; then
+		"$APTGET" update
+		"$APTGET" install -y --no-install-recommends ipset curl lsb-core dnsutils || {
+			echo could not install prerequisites
+			exitp 6
+		}
+	elif [ -x "$YUM" ] ; then
+		"$YUM" -y install curl ipset redhat-lsb-core daemonize || {
+			echo could not install prerequisites
+			exitp 6
+		}
+	else
+		echo supported package manager not found
+		echo you must manually install : ipset curl lsb-core
 		exitp 5
-	}
-	"$APTGET" update
-	"$APTGET" install -y --no-install-recommends ipset curl lsb-core dnsutils || {
-		echo could not install prerequisites
-		exitp 6
-	}
+	fi
 	[ ! -x "$LSB_INSTALL" ] || [ ! -x "$LSB_REMOVE" ] && {
 		echo lsb install scripts not found
 		exitp 7
 	}
-else
-	echo everything is present
 fi
 
 echo \* installing binaries ...
diff --git a/readme.txt b/readme.txt
index b7e660c..fc87e1b 100644
--- a/readme.txt
+++ b/readme.txt
@@ -310,11 +310,23 @@ stop : systemctl stop zapret
 status, output messages : systemctl status zapret
 После изменения /etc/init.d/zapret : systemctl daemon-reload
 
-Пример установки на debian-подобную систему для чайников
---------------------------------------------------------
+Centos 7+, Fedora
+-----------------
+
+Centos с 7 версии и более-менее новые федоры построены на systemd.
+В качестве пакетного менеджера используется yum.
+
+Установить пакеты :
+ yum install -y curl ipset redhat-lsb-core daemonize
+
+Далее все аналогично debian.
+Инит скрипт init.d/debian/zapret адаптирован под условия новых centos и fedora.
+
+Пример установки на debian-подобную систему, centos 7+, fedora для чайников
+---------------------------------------------------------------------------
 
 Ты простой юзер ? Не хочешь ни во что вникать, а хочешь нажать и чтобы сразу заработало ?
-Пользуешься ubuntu или debian ? Тогда этот вариант для тебя.
+Пользуешься ubuntu 16+, debian 8+, centos 7+, fedora ? Тогда этот вариант для тебя.
 Есть шансы, что оно заработает с минимумом усилий. Запусти терминал и в нем вбивай команды :
 
 # su
diff --git a/uninstall_easy.sh b/uninstall_easy.sh
index b6d9236..f975b43 100755
--- a/uninstall_easy.sh
+++ b/uninstall_easy.sh
@@ -2,10 +2,15 @@
 
 # automated script for easy uninstalling zapret on systemd based system
 
+exists()
+{
+	which $1 >/dev/null 2>/dev/null
+}
+
 [ $(id -u) -ne "0" ] && {
 	echo root is required
-	which sudo >/dev/null && exec sudo $0
-	which su >/dev/null && exec su -c $0
+	exists sudo && exec sudo $0
+	exists su && exec su -c $0
 	echo su or sudo not found
 	exit 2
 }