[v1.0.1] Add Transparent proxy iptables script.

META-INF/com/google/android/update-binary

@@ -1,10 +1,151 @@
 #!/sbin/sh
-# This is a dummy file that should be replaced with a proper installer script
 
-# If you are creating a module locally for personal usage or testing,
+TMPDIR=/dev/tmp
-# download the script in the following URL:
+MOUNTPATH=/dev/magisk_img
-# https://github.com/topjohnwu/Magisk/blob/master/scripts/module_installer.sh
-# And replace this script with the downloaded script
 
-# Error, this script should always be replaced
+# Default permissions
-exit 1
+umask 022
+
+# Initial cleanup
+rm -rf $TMPDIR 2>/dev/null
+mkdir -p $TMPDIR
+
+# echo before loading util_functions
+ui_print() { echo "$1"; }
+
+require_new_magisk() {
+  ui_print "***********************************"
+  ui_print " Please install the latest Magisk! "
+  ui_print "***********************************"
+  exit 1
+}
+
+imageless_magisk() {
+  [ $MAGISK_VER_CODE -gt 18100 ]
+  return $?
+}
+
+##########################################################################################
+# Environment
+##########################################################################################
+
+OUTFD=$2
+ZIPFILE=$3
+
+mount /data 2>/dev/null
+
+# Load utility functions
+if [ -f /data/adb/magisk/util_functions.sh ]; then
+  . /data/adb/magisk/util_functions.sh
+  NVBASE=/data/adb
+else
+  require_new_magisk
+fi
+
+# Preperation for flashable zips
+setup_flashable
+
+# Mount partitions
+mount_partitions
+
+# Detect version and architecture
+api_level_arch_detect
+
+# Setup busybox and binaries
+$BOOTMODE && boot_actions || recovery_actions
+
+##########################################################################################
+# Preparation
+##########################################################################################
+
+# Extract common files
+unzip -oj "$ZIPFILE" module.prop install.sh uninstall.sh 'common/*' -d $TMPDIR >&2
+
+[ ! -f $TMPDIR/install.sh ] && abort "! Unable to extract zip file!"
+# Load install script
+. $TMPDIR/install.sh
+
+if imageless_magisk; then
+  $BOOTMODE && MODDIRNAME=modules_update || MODDIRNAME=modules
+  MODULEROOT=$NVBASE/$MODDIRNAME
+else
+  $BOOTMODE && IMGNAME=magisk_merge.img || IMGNAME=magisk.img
+  IMG=$NVBASE/$IMGNAME
+  request_zip_size_check "$ZIPFILE"
+  mount_magisk_img
+  MODULEROOT=$MOUNTPATH
+fi
+
+MODID=`grep_prop id $TMPDIR/module.prop`
+MODPATH=$MODULEROOT/$MODID
+
+print_modname
+
+ui_print "******************************"
+ui_print "Powered by Magisk (@topjohnwu)"
+ui_print "******************************"
+
+##########################################################################################
+# Install
+##########################################################################################
+
+# Create mod paths
+rm -rf $MODPATH 2>/dev/null
+mkdir -p $MODPATH
+
+# Remove placeholder
+rm -f $MODPATH/system/placeholder 2>/dev/null
+
+# Custom uninstaller
+[ -f $TMPDIR/uninstall.sh ] && cp -af $TMPDIR/uninstall.sh $MODPATH/uninstall.sh
+
+# Auto Mount
+if imageless_magisk; then
+  $SKIPMOUNT && touch $MODPATH/skip_mount
+else
+  $SKIPMOUNT || touch $MODPATH/auto_mount
+fi
+
+# prop files
+$PROPFILE && cp -af $TMPDIR/system.prop $MODPATH/system.prop
+
+# Module info
+cp -af $TMPDIR/module.prop $MODPATH/module.prop
+if $BOOTMODE; then
+  # Update info for Magisk Manager
+  if imageless_magisk; then
+    mktouch $NVBASE/modules/$MODID/update
+    cp -af $TMPDIR/module.prop $NVBASE/modules/$MODID/module.prop
+  else
+    mktouch /sbin/.magisk/img/$MODID/update
+    cp -af $TMPDIR/module.prop /sbin/.magisk/img/$MODID/module.prop
+  fi
+fi
+
+# post-fs-data mode scripts
+$POSTFSDATA && cp -af $TMPDIR/post-fs-data.sh $MODPATH/post-fs-data.sh
+
+# service mode scripts
+$LATESTARTSERVICE && cp -af $TMPDIR/service.sh $MODPATH/service.sh
+
+on_install
+
+# Handle replace folders
+for TARGET in $REPLACE; do
+  mktouch $MODPATH$TARGET/.replace
+done
+
+ui_print "- Setting permissions"
+set_permissions
+
+##########################################################################################
+# Finalizing
+##########################################################################################
+
+cd /
+imageless_magisk || unmount_magisk_img
+$BOOTMODE || recovery_cleanup
+rm -rf $TMPDIR $MOUNTPATH
+
+ui_print "- Done"
+exit 0

README.md

@@ -6,9 +6,11 @@ This is a v2ray module for Magisk, and includes binaries for arm, arm64, x86, x6
 
 ## Included
 
-* [V2Ray](<https://github.com/v2ray/v2ray-core>)
+* [V2Ray core](<https://github.com/v2ray/v2ray-core>)
 * [magisk-module-installer](https://github.com/topjohnwu/magisk-module-installer)
 
+- V2Ray service script and Android transparent proxy iptables script
+
 
 
 ## Install
@@ -19,9 +21,13 @@ This is a v2ray module for Magisk, and includes binaries for arm, arm64, x86, x6
 
 ## Config
 
-V2ray config file is store in `/data/v2ray/config.json` .
+- V2ray config file is store in `/data/v2ray/config.json` .
+
+
+- Please make sure the config is correct. You can check it by running a command :
+
+   `export V2RAY_LOCATION_ASSET=/data/v2ray; v2ray -test -config /data/v2ray/config.json`  in android terminal.
 
-Please make sure the config is correct. You can do that by running a command `v2ray -test -config /data/v2ray/config.json`  in android terminal.
 
 
 
@@ -29,7 +35,7 @@ Please make sure the config is correct. You can do that by running a command `v2
 
 - V2ray service is autorun on boot. If you don't want it run automatically, you can just add a file `/data/v2ray/no-autostart` .
 
-- You can also start / stop manually by run the service script in `$MODDIR` . For example, in my environment , the script's absolute path is `/sbin/.magisk/img/v2ray/v2ray.service` . 
+- You can start / stop manually by execute the service script in `$MODDIR/v2ray.service` . For example, in my environment , the script's absolute path is `/sbin/.magisk/img/v2ray/v2ray.service` .
 
 - So, if you want to start v2ray service, just run:
 
@@ -43,12 +49,62 @@ Please make sure the config is correct. You can do that by running a command `v2
 
   `/sbin/.magisk/img/v2ray/v2ray.service restart`
 
+## Transparent proxy
+
+### Working principle
+
+This module also contains a simple script that helping you to make transparent proxy via iptables. In fact , the script is just make some REDIRECT and TPROXY rules to redirect app's network into 65535 port in localhost. And 65535 port is listen by v2ray inbond with dokodemo-door protocol. In summarize, the App proxy network path is looks like :
+
+
+
+**Android App** ( Browser, Google, Facebook, Twitter ... ... )
+
+  &vArr;  ( TCP & UDP network protocol )
+
+Android system **iptables**                          [ localhost inside ]
+
+  &vArr;  ( REDIRECT & TPROXY iptables rules )
+
+127.0.0.1:65535 [ Inbond ] ----- **V2Ray** ----- [ Outbond ]
+
+​          ( Shadowsocks, Vmess )                                &vArr;
+
+  [ Internet outside ]            ( SS, V2Ray)       **Proxy Server**
+
+​       ( HTTP, TCP, ... other application protocol )   &vArr;
+
+ ( Google, Facebook, Twitter ... ... )                 **App Server**
+
+
+
+### Choose proxy target
+
+- Select mode : You can write a list of App's uid into `/data/v2ray/appid.list` file so that the script would select these App's network proxy via V2Ray. Each App's uid should separate by space or just One App's uid per line.
+
+- Global mode : You can write a single number "0" into `/data/v2ray/appid.list` file to make all App's network proxy via V2Ray.
+
+
+
+### Enable/Disable proxy
+
+- Only when the V2Ray service start normally on boot and  `/data/v2ray/appid.list` file is not empty, the transparent proxy iptables script can run automatically.
+
+- Otherwise, you can execute iptables script in `$MODDIR/v2ray.redirect` . For example, in my environment:
+
+  Enable transparent proxy:
+
+  `/sbin/.magisk/img/v2ray/v2ray.redirect enable`
+
+  Disable transparent proxy:
+
+  `/sbin/.magisk/img/v2ray/v2ray.redirect disable`
+
 
 
 ## Uninstall
 
 1. Uninstall the module via Magisk Manager App.
-2. Remove the directory with command `rm -rf /data/v2ray` .
+2. You can clean v2ray data dir by running command `rm -rf /data/v2ray` .
 
 
 

common/service.sh

@@ -8,4 +8,4 @@ MODDIR=${0%/*}
 
 # This script will be executed in late_start service mode
 
-if [ ! -f /data/v2ray/no-autostart ] ; then $MODDIR/v2ray.service start ; fi
+if [ ! -f /data/v2ray/no-autostart ] ; then $MODDIR/v2ray.service start  && [ -f /data/v2ray/appid.list ] && $MODDIR/v2ray.redirect enable ; fi

install.sh

@@ -140,13 +140,14 @@ on_install() {
   mkdir -p $MODPATH/system/bin
   mkdir -p $MODPATH/system/etc
   unzip -j -o "$ZIPFILE" "v2ray/etc/v2ray.service" -d $MODPATH >&2
+  unzip -j -o "$ZIPFILE" "v2ray/etc/v2ray.redirect" -d $MODPATH >&2
   unzip -j -o "$ZIPFILE" "v2ray/bin/$ARCH/*" -d $MODPATH/system/bin >&2
 
   # copy v2ray data and config
   ui_print "- Copy V2Ray config and data files"
   mkdir -p /data/v2ray
   mkdir -p /data/v2ray/run
-  [ -f /data/v2ray/config.json ] || \\
+  [ -f /data/v2ray/config.json ] || \
   unzip -j -o "$ZIPFILE" "v2ray/etc/config.json" -d /data/v2ray >&2
   unzip -j -o "$ZIPFILE" "v2ray/etc/resolv.conf" -d /data/v2ray >&2
   unzip -j -o "$ZIPFILE" "v2ray/etc/geosite.dat" -d /data/v2ray >&2
@@ -163,6 +164,7 @@ set_permissions() {
   # The following is the default rule, DO NOT remove
   set_perm_recursive $MODPATH 0 0 0755 0644
   set_perm  $MODPATH/v2ray.service     0  0  0755
+  set_perm  $MODPATH/v2ray.redirect    0  0  0755
   set_perm  $MODPATH/system/bin/v2ray  ${inet_uid}  ${inet_uid}  6755
   set_perm  $MODPATH/system/bin/v2ctl  ${inet_uid}  ${inet_uid}  6755
   set_perm  /data/v2ray                ${inet_uid}  ${inet_uid}  0755

module.prop

@@ -1,6 +1,6 @@
 id=v2ray
 name=V2ray for Android
 version=v4.18
-versionCode=20190329
+versionCode=20190330
 author=chendefine
 description=V2ray core with service scripts for Android

system/placeholder

@@ -1 +0,0 @@
-This file will be deleted in Magisk Manager, it is only a placeholder for git

uninstall.sh

@@ -0,0 +1,11 @@
+##########################################################################################
+#
+# V2Ray Magisk Module Uninstaller Script
+#
+##########################################################################################
+
+remove_v2ray_data_dir() {
+  rm -rf /data/v2ray
+}
+
+remove_v2ray_data_dir

v2ray/etc/config.json

@@ -8,6 +8,7 @@
 
     // By default, V2Ray write error log to stdout.
     // "error": "/path/to/error/log/file",
+    "error": "/data/v2ray/run/error.log",
 
     // Log level, one of "debug", "info", "warning", "error", "none"
     "loglevel": "warning"
@@ -15,22 +16,22 @@
   // List of inbound proxy configurations.
   "inbounds": [{
     // Port to listen on. You may need root access if the value is less than 1024.
-    "port": 1080,
+    "port": 65535,
 
     // IP address to listen on. Change to "0.0.0.0" to listen on all network interfaces.
     "listen": "127.0.0.1",
 
     // Tag of the inbound proxy. May be used for routing.
-    "tag": "socks-inbound",
+    "tag": "proxy-inbound",
 
     // Protocol name of inbound proxy.
-    "protocol": "socks",
+    "protocol": "dokodemo-door",
 
     // Settings of the protocol. Varies based on protocol.
     "settings": {
-      "auth": "noauth",
+      "timeout": 10,
-      "udp": false,
+      "network": "tcp,udp",
-      "ip": "127.0.0.1"
+      "followRedirect": true
     },
 
     // Enable sniffing on TCP connection.
@@ -42,6 +43,15 @@
   }],
   // List of outbound proxy configurations.
   "outbounds": [{
+    // Replace your proxy protocol in this section, like: vmess or shadowsocks
+    "protocol": "freedom",
+
+    // Settings of the protocol. Varies based on protocol.
+    "settings": {},
+
+    // Tag of the outbound. May be used for routing.
+    "tag": "proxy"
+  },{
     // Protocol name of the outbound proxy.
     "protocol": "freedom",
 
@@ -65,10 +75,22 @@
     "domainStrategy": "IPOnDemand",
     "rules":[
       {
-        // Blocks access to private IPs. Remove this if you want to access your router.
+        // Bypass private IPs.
         "type": "field",
         "ip": ["geoip:private"],
-        "outboundTag": "blocked"
+        "outboundTag": "direct"
+      },
+      {
+        // Bypass all china IPs.
+        "type": "field",
+        "ip": ["geoip:cn"],
+        "outboundTag": "direct"
+      },
+      {
+        // Bypass all china sites.
+        "type": "field",
+        "domain": ["geosite:cn"],
+        "outboundTag": "direct"
       },
       {
         // Blocks major ads.

v2ray/etc/v2ray.redirect

@@ -0,0 +1,149 @@
+#!/system/bin/sh
+
+route_id="1130"
+inet_uid="3003"
+route_name="v2ray"
+proxy_port="65535"
+proxy_mark="0x20151130"
+appid_file="/data/v2ray/appid.list"
+table_file="/data/misc/net/rt_tables"
+
+appid_list=`[ -f ${appid_file} ] && cat ${appid_file}`
+
+intranet=(0.0.0.0/8 10.0.0.0/8 127.0.0.0/8 169.254.0.0/16 172.16.0.0/12 192.168.0.0/16 224.0.0.0/4 240.0.0.0/4)
+
+probe_uid_app_name() {
+  app_name=`grep " $1 " /data/system/packages.list | cut -d ' ' -f 1`
+  app_name=`echo ${app_name} | sed 's/ / \& /g'`
+  if [ "${app_name}" != "" ] ; then
+    echo "Redirect ${app_name} APP's network."
+  else
+    echo "APP with uid=$1 is not found."
+    return 1
+  fi
+}
+
+delete_route_table() {
+  if eval "ip rule | grep -q \"from all fwmark ${proxy_mark} lookup\"" ; then
+    echo "Clean UDP redirection route table."
+    ip rule del fwmark ${proxy_mark} lookup ${route_id}
+    ip route flush table ${route_id}
+  fi
+  sed -i "/${route_id} ${route_name}/d" ${table_file}
+}
+
+create_route_table() {
+  echo "Create UDP redirection route table."
+  echo "${route_id} ${route_name}" >> ${table_file}
+  ip route add local default dev lo table ${route_id}
+  ip rule add fwmark ${proxy_mark} lookup ${route_id}
+}
+
+flush_tcp_iptables() {
+  echo "Clean TCP redirection iptables rules."
+  iptables -w 10 -t nat -D OUTPUT -p tcp -j TCP_PRE_PROXY 2>/dev/null
+  if eval "iptables -w 10 -t nat -L TCP_PRE_PROXY &>/dev/null" ; then
+    iptables -w 10 -t nat -F TCP_PRE_PROXY
+    iptables -w 10 -t nat -X TCP_PRE_PROXY
+  fi
+  if eval "iptables-save -t nat | grep -q ':V2RAY '" ; then
+    iptables -w 10 -t nat -F V2RAY
+    iptables -w 10 -t nat -X V2RAY
+  fi
+}
+
+flush_udp_iptables() {
+  echo "Clean UDP redirection iptables rules."
+  iptables -w 10 -t mangle -D PREROUTING -p udp -j V2RAY 2>/dev/null
+  iptables -w 10 -t mangle -D OUTPUT -p udp -j UDP_PRE_PROXY 2>/dev/null
+  if eval "iptables-save -t mangle | grep -q ':UDP_PRE_PROXY '" ; then
+    iptables -w 10 -t mangle -F UDP_PRE_PROXY
+    iptables -w 10 -t mangle -X UDP_PRE_PROXY
+  fi
+  if eval "iptables-save -t mangle | grep -q ':V2RAY '" ; then
+    iptables -w 10 -t mangle -F V2RAY
+    iptables -w 10 -t mangle -X V2RAY
+  fi
+}
+
+init_tcp_iptables() {
+  echo "Create TCP redirection iptables rules."
+  ## create NAT iptables for TCP redirect
+  iptables -w 10 -t nat -N V2RAY
+  iptables -w 10 -t nat -N TCP_PRE_PROXY
+  ## bypass intranet
+  for subnet in ${intranet[@]}; do
+    iptables -w 10 -t nat -A V2RAY -d ${subnet} -j RETURN
+  done
+  ## bypass v2ray program
+  iptables -w 10 -t nat -A TCP_PRE_PROXY -m owner --uid-owner ${inet_uid} -j RETURN
+  ## apply to NAT iptables OUTPUT
+  iptables -w 10 -t nat -A V2RAY -p tcp -j REDIRECT --to-ports ${proxy_port}
+}
+
+init_udp_iptables() {
+  echo "Create UDP redirection iptables rules."
+  ## create Mangle iptables for UDP redirect
+  iptables -w 10 -t mangle -N V2RAY
+  iptables -w 10 -t mangle -N UDP_PRE_PROXY
+  ## bypass intranet
+  for subnet in ${intranet[@]}; do
+    iptables -w 10 -t mangle -A UDP_PRE_PROXY -d ${subnet} -j RETURN
+  done
+  ## bypass v2ray program
+  iptables -w 10 -t mangle -A UDP_PRE_PROXY -m owner --uid-owner ${inet_uid} -j RETURN
+  ## apply to Mangle iptables OUTPUT & PREROUTING
+  iptables -w 10 -t mangle -A V2RAY -p udp -m mark --mark ${proxy_mark} -j TPROXY --on-ip 127.0.0.1 --on-port ${proxy_port}
+}
+
+redirect_iptables() {
+  if [ "${appid_list}" = "0" ] ; then
+  ## redirect global network
+    echo "Redirect TCP & UDP with Global mode."
+    iptables -w 10 -t nat -A TCP_PRE_PROXY -m owner ! --uid-owner ${inet_uid} -j V2RAY
+    iptables -w 10 -t mangle -A UDP_PRE_PROXY -m owner ! --uid-owner ${inet_uid} -j MARK --set-mark ${proxy_mark}
+  else
+  ## effect assign app
+    for appid in ${appid_list}; do
+      probe_uid_app_name ${appid} && \
+      iptables -w 10 -t nat -A TCP_PRE_PROXY -m owner --uid-owner ${appid} -j V2RAY && \
+      iptables -w 10 -t mangle -A UDP_PRE_PROXY -m owner --uid-owner ${appid} -j MARK --set-mark ${proxy_mark}
+    done
+  fi
+}
+
+apply_iptables_rules() {
+  iptables -w 10 -t nat -A OUTPUT -p tcp -j TCP_PRE_PROXY
+  iptables -w 10 -t mangle -A OUTPUT -p udp -j UDP_PRE_PROXY
+  iptables -w 10 -t mangle -A PREROUTING -p udp -j V2RAY
+}
+
+disable_redirect() {
+  delete_route_table
+  flush_tcp_iptables
+  flush_udp_iptables
+}
+
+enable_redirect() {
+  disable_redirect
+  create_route_table
+  init_tcp_iptables
+  init_udp_iptables
+  redirect_iptables
+  apply_iptables_rules
+}
+
+case "$1" in
+  enable)
+    enable_redirect
+    ;;
+  disable)
+    disable_redirect
+    ;;
+  renew)
+    enable_redirect
+    ;;
+  *)
+    echo "$0:  usage:  $0 {enable|disable|renew}"
+    ;;
+esac

v2ray/etc/v2ray.service

@@ -22,6 +22,13 @@ probe_service() {
   fi
 }
 
+simple_clean_iptables() {
+  echo "Clean relevant iptables simply."
+  iptables -w 10 -t nat -D OUTPUT -p tcp -j TCP_PRE_PROXY 2>/dev/null
+  iptables -w 10 -t mangle -D PREROUTING -p udp -j V2RAY 2>/dev/null
+  iptables -w 10 -t mangle -D OUTPUT -p udp -j UDP_PRE_PROXY 2>/dev/null
+}
+
 do_start() {
   if ! probe_service && [ -f ${CONFFILE} ] && ${V2RAY} ${V2RAY_OPTS} -test ; then
     echo "Starting ${NAME} service."
@@ -31,6 +38,16 @@ do_start() {
     chmod 6755 ${V2RAY}
     ${V2RAY} ${V2RAY_OPTS} &
     echo -n $! > ${PIDFILE}
+    sleep 10
+    if probe_service ; then
+      echo "Start ${NAME} service Done."
+    else
+      rm -f ${PIDFILE}
+      echo "Start ${NAME} service Failed."
+      return 1
+    fi
+  else
+    return 2
   fi
 }
 
@@ -47,11 +64,13 @@ case "$1" in
     do_start
     ;;
   stop)
+    simple_clean_iptables
     do_stop
     ;;
   restart)
     do_stop
-    do_start
+    do_start || \
+    simple_clean_iptables
     ;;
   *)
     echo "$0:  usage:  $0 {start|stop|restart}"