refine dns resolve

Improve the compatibility by using IPC

README.md

@@ -14,8 +14,8 @@ Help to translate shadowsocks: http://crowdin.net/project/shadowsocks/invite
 
 * JDK 1.7+
 * SBT 0.13.0+
-* Android SDK r21+
-* Android NDK r9+
+* Android SDK r24+
+* Android NDK r10d+
 
 ### BUILD
 
@@ -58,6 +58,16 @@ Help to translate shadowsocks: http://crowdin.net/project/shadowsocks/invite
     sbt clean android:package-release
 ```
 
+## OPEN SOURCE LICENSES
+
+* shadowsocks-libev: [GPLv3](https://github.com/shadowsocks/shadowsocks-libev/blob/master/LICENSE)
+* tun2socks: [BSD](https://github.com/shadowsocks/shadowsocks-android/blob/master/src/main/jni/badvpn/COPYING)
+* redsocks: [APL 2.0](https://github.com/shadowsocks/shadowsocks-android/blob/master/src/main/jni/redsocks/README)
+* OpenSSL: [OpenSSL](https://github.com/shadowsocks/shadowsocks-android/blob/master/src/main/jni/openssl/NOTICE)
+* pdnsd: [GPLv3](https://github.com/shadowsocks/shadowsocks-android/blob/master/src/main/jni/pdnsd/COPYING)
+* libev: [GPLv2](https://github.com/shadowsocks/shadowsocks-android/blob/master/src/main/jni/libev/LICENSE)
+* libevent: [BSD](https://github.com/shadowsocks/shadowsocks-android/blob/master/src/main/jni/libevent/LICENSE)
+
 ### LICENSE
 
 Copyright (C) 2014 Max Lv <max.c.lv@gmail.com>

build.sh

@@ -7,8 +7,8 @@ function try () {
 try pushd src/main
 
 # Build
-try $ANDROID_NDK_HOME/ndk-build clean
-try $ANDROID_NDK_HOME/ndk-build
+#try $ANDROID_NDK_HOME/ndk-build clean
+try $ANDROID_NDK_HOME/ndk-build -j8
 
 # copy executables
 rm -rf assets/armeabi-v7a

gfwlist/gen.py

@@ -10,20 +10,21 @@ import IPy
 
 def main():
     china_list_set = IPy.IPSet()
-    for line in sys.stdin:
-        line_params = line.split("|")
-        if len(line_params) < 5 or line_params[2] != "ipv4" or line_params[1] != "CN":
-            continue
-        ip_addr = line_params[3]
-        ip_length = float(line_params[4])
-        ip_mask = 32 - int(math.ceil(math.log(ip_length, 2)))
-        china_list_set.add(IPy.IP("%s/%d" % (ip_addr, ip_mask)))
+    # for line in sys.stdin:
+    #     line_params = line.split("|")
+    #     if len(line_params) < 5 or line_params[2] != "ipv4" or line_params[1] != "CN":
+    #         continue
+    #     ip_addr = line_params[3]
+    #     ip_length = float(line_params[4])
+    #     ip_mask = 32 - int(math.ceil(math.log(ip_length, 2)))
+    #     china_list_set.add(IPy.IP("%s/%d" % (ip_addr, ip_mask)))
 
     # 添加内网地址
     internal_list = IPy.IPSet(map(IPy.IP, [
         "0.0.0.0/8",
         "10.0.0.0/8",
         "100.64.0.0/10",
+        "114.114.114.0/24",
         "127.0.0.0/8",
         "169.254.0.0/16",
         "172.16.0.0/12",
@@ -34,6 +35,7 @@ def main():
         "198.18.0.0/15",
         "198.51.100.0/24",
         "203.0.113.0/24",
+        "223.5.5.0/24",
         "224.0.0.0/4",
         "240.0.0.0/4",
     ]))
@@ -45,10 +47,10 @@ def main():
     for ip in china_list_set:
         all.discard(ip)
 
-    filter = itertools.ifilter(lambda x: len(x) <= 65536, all)
-    for ip in filter:
-        all.discard(ip)
-        all.add(IPy.IP(ip.strNormal(0)).make_net('255.255.0.0'))
+    # filter = itertools.ifilter(lambda x: len(x) <= 65536, all)
+    # for ip in filter:
+    #     all.discard(ip)
+    #     all.add(IPy.IP(ip.strNormal(0)).make_net('255.255.0.0'))
 
     # 输出结果
     for ip in all:

project/plugins.sbt

@@ -1,7 +1,7 @@
 resolvers += Resolver.url("scalasbt releases", new URL("http://scalasbt.artifactoryonline.com/scalasbt/sbt-plugin-snapshots"))(Resolver.ivyStylePatterns)
 
-addSbtPlugin("com.hanhuy.sbt" % "android-sdk-plugin" % "1.3.22")
+addSbtPlugin("com.hanhuy.sbt" % "android-sdk-plugin" % "1.4.7")
 
-resolvers += Resolver.sbtPluginRepo("snapshots")
+resolvers += "Sonatype snapshots" at "https://oss.sonatype.org/content/repositories/snapshots/"
 
-addSbtPlugin("com.hanhuy.sbt" % "sbt-idea" % "1.7.0-SNAPSHOT")
+addSbtPlugin("com.github.mpeltonen" % "sbt-idea" % "1.7.0-SNAPSHOT")

src/main/AndroidManifest.xml

@@ -1,7 +1,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.github.shadowsocks"
-    android:versionCode="105"
-    android:versionName="2.6.7">
+    android:versionCode="112"
+    android:versionName="2.7.4">
 
   <uses-permission android:name="android.permission.INTERNET"/>
   <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

src/main/assets/pages/about.html

@@ -286,6 +286,17 @@ GNU General Public License for more details.</p>
 <p>You should have received a copy of the GNU General Public License
 along with this program. If not, see <a href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>.</p>
 
+<h3>Open Source Licenses</h3>
+<ul>
+    <li>shadowsocks-libev: <a href="https://github.com/shadowsocks/shadowsocks-libev/blob/master/LICENSE">GPLv3</a></li>
+    <li>tun2socks: <a href="https://github.com/shadowsocks/shadowsocks-android/blob/master/src/main/jni/badvpn/COPYING">BSD</a></li>
+    <li>redsocks: <a href="https://github.com/shadowsocks/shadowsocks-android/blob/master/src/main/jni/redsocks/README">APL 2.0</a></li>
+    <li>OpenSSL: <a href="https://github.com/shadowsocks/shadowsocks-android/blob/master/src/main/jni/openssl/NOTICE">OpenSSL</a></li>
+    <li>pdnsd: <a href="https://github.com/shadowsocks/shadowsocks-android/blob/master/src/main/jni/pdnsd/COPYING">GPLv3</a></li>
+    <li>libev: <a href="https://github.com/shadowsocks/shadowsocks-android/blob/master/src/main/jni/libev/LICENSE">GPLv2</a></li>
+    <li>libevent: <a href="https://github.com/shadowsocks/shadowsocks-android/blob/master/src/main/jni/libevent/LICENSE">BSD</a></li>
+</ul>
+
 </body>
 </html>
 <!-- This document was created with MarkdownPad, the Markdown editor for Windows (http://markdownpad.com) -->

src/main/java/com/github/shadowsocks/System.java

@@ -45,4 +45,6 @@ public class System {
 
   public static native void exec(String cmd);
   public static native String getABI();
+  public static native int sendfd(int fd);
+  public static native void jniclose(int fd);
 }

src/main/jni/Android.mk

@@ -110,6 +110,21 @@ LOCAL_CFLAGS := -O2 -I$(LOCAL_PATH)/libevent \
 
 include $(BUILD_STATIC_LIBRARY)
 
+########################################################
+## libancillary
+########################################################
+
+include $(CLEAR_VARS)
+
+ANCILLARY_SOURCE := fd_recv.c fd_send.c
+
+LOCAL_MODULE := libancillary
+LOCAL_CFLAGS += -O2 -I$(LOCAL_PATH)/libancillary
+
+LOCAL_SRC_FILES := $(addprefix libancillary/, $(ANCILLARY_SOURCE))
+
+include $(BUILD_STATIC_LIBRARY)
+
 ########################################################
 ## libipset
 ########################################################
@@ -234,13 +249,14 @@ include $(BUILD_EXECUTABLE)
 
 include $(CLEAR_VARS)
 
-SHADOWSOCKS_SOURCES := local.c cache.c udprelay.c encrypt.c utils.c netutils.c json.c jconf.c acl.c
+SHADOWSOCKS_SOURCES := local.c cache.c udprelay.c encrypt.c utils.c netutils.c json.c jconf.c acl.c android.c
 
 LOCAL_MODULE    := ss-local
 LOCAL_SRC_FILES := $(addprefix shadowsocks-libev/src/, $(SHADOWSOCKS_SOURCES))
 LOCAL_CFLAGS    := -Wall -O2 -fno-strict-aliasing -DUDPRELAY_LOCAL \
 					-DUSE_CRYPTO_OPENSSL -DANDROID -DHAVE_CONFIG_H \
-					-I$(LOCAL_PATH)/libev/ \
+					-I$(LOCAL_PATH)/libev \
+					-I$(LOCAL_PATH)/libancillary \
 					-I$(LOCAL_PATH)/openssl/include  \
 					-I$(LOCAL_PATH)/shadowsocks-libev/libudns \
 					-I$(LOCAL_PATH)/shadowsocks-libev/libcork/include \
@@ -248,7 +264,7 @@ LOCAL_CFLAGS    := -Wall -O2 -fno-strict-aliasing -DUDPRELAY_LOCAL \
 					-I$(LOCAL_PATH)/shadowsocks-libev/libsodium/src/libsodium/include/sodium \
 					-I$(LOCAL_PATH)/shadowsocks-libev/libipset/include
 
-LOCAL_STATIC_LIBRARIES := libev libcrypto libipset libcork libudns libsodium
+LOCAL_STATIC_LIBRARIES := libev libcrypto libipset libcork libudns libsodium libancillary
 
 LOCAL_LDLIBS := -llog
 
@@ -260,20 +276,21 @@ include $(BUILD_EXECUTABLE)
 
 include $(CLEAR_VARS)
 
-SHADOWSOCKS_SOURCES := tunnel.c cache.c udprelay.c encrypt.c utils.c netutils.c json.c jconf.c
+SHADOWSOCKS_SOURCES := tunnel.c cache.c udprelay.c encrypt.c utils.c netutils.c json.c jconf.c android.c
 
 LOCAL_MODULE    := ss-tunnel
 LOCAL_SRC_FILES := $(addprefix shadowsocks-libev/src/, $(SHADOWSOCKS_SOURCES))
 LOCAL_CFLAGS    := -Wall -O2 -fno-strict-aliasing -DUDPRELAY_LOCAL -DUDPRELAY_TUNNEL \
 					-DUSE_CRYPTO_OPENSSL -DANDROID -DHAVE_CONFIG_H -DSSTUNNEL_JNI \
-					-I$(LOCAL_PATH)/libev/ \
+					-I$(LOCAL_PATH)/libev \
+					-I$(LOCAL_PATH)/libancillary \
 					-I$(LOCAL_PATH)/shadowsocks-libev/libudns \
 					-I$(LOCAL_PATH)/shadowsocks-libev/libcork/include \
 					-I$(LOCAL_PATH)/shadowsocks-libev/libsodium/src/libsodium/include \
 					-I$(LOCAL_PATH)/shadowsocks-libev/libsodium/src/libsodium/include/sodium \
 					-I$(LOCAL_PATH)/openssl/include 
 
-LOCAL_STATIC_LIBRARIES := libev libcrypto libsodium libcork libudns
+LOCAL_STATIC_LIBRARIES := libev libcrypto libsodium libcork libudns libancillary
 
 LOCAL_LDLIBS := -llog
 
@@ -287,12 +304,13 @@ include $(CLEAR_VARS)
 
 LOCAL_MODULE:= system
 
-LOCAL_SRC_FILES:= \
-	   system.cpp
+LOCAL_C_INCLUDES:= $(LOCAL_PATH)/libancillary
+
+LOCAL_SRC_FILES:= system.cpp
 
 LOCAL_LDLIBS := -ldl -llog
 
-LOCAL_STATIC_LIBRARIES := cpufeatures
+LOCAL_STATIC_LIBRARIES := cpufeatures libancillary
 
 include $(BUILD_SHARED_LIBRARY)
 
@@ -309,7 +327,10 @@ LOCAL_CFLAGS += -DBADVPN_LITTLE_ENDIAN -DBADVPN_THREAD_SAFE
 LOCAL_CFLAGS += -DNDEBUG -DANDROID
 # LOCAL_CFLAGS += -DTUN2SOCKS_JNI
 
+LOCAL_STATIC_LIBRARIES := libancillary
+
 LOCAL_C_INCLUDES:= \
+		$(LOCAL_PATH)/libancillary \
         $(LOCAL_PATH)/badvpn/lwip/src/include/ipv4 \
         $(LOCAL_PATH)/badvpn/lwip/src/include/ipv6 \
         $(LOCAL_PATH)/badvpn/lwip/src/include \

src/main/jni/badvpn/tun2socks/tun2socks.c

@@ -71,9 +71,13 @@
 #include <generated/blog_channel_tun2socks.h>
 
 #ifdef ANDROID
+
+#include <ancillary.h>
+
 #include <sys/prctl.h>
 #include <sys/un.h>
 #include <structure/BAVL.h>
+
 BAVL connections_tree;
 typedef struct {
     BAddr local_addr;
@@ -408,7 +412,6 @@ int main (int argc, char **argv)
         prctl(PR_SET_NAME, "com.github.shadowsocks");
     }
 
-
     // handle --help and --version
     if (options.help) {
         print_version();
@@ -490,11 +493,56 @@ int main (int argc, char **argv)
 
 #ifdef ANDROID
     // use supplied file descriptor
+    
+    int sock, fd;
+    struct sockaddr_un addr;
+
+    if ((sock = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
+        BLog(BLOG_ERROR, "socket() failed: %s (socket sock = %d)\n", strerror(errno), sock);
+        goto fail2;
+    }
+
+    char *path = "/data/data/com.github.shadowsocks/sock_path";
+    unlink(path);
+    memset(&addr, 0, sizeof(addr));
+    addr.sun_family = AF_UNIX;
+    strncpy(addr.sun_path, path, sizeof(addr.sun_path)-1);
+
+    if (bind(sock, (struct sockaddr*)&addr, sizeof(addr)) == -1) {
+        BLog(BLOG_ERROR, "bind() failed: %s (sock = %d)\n", strerror(errno), sock);
+        close(sock);
+        goto fail2;
+    }
+
+    if (listen(sock, 5) == -1) {
+        BLog(BLOG_ERROR, "listen() failed: %s (sock = %d)\n", strerror(errno), sock);
+        close(sock);
+        goto fail2;
+    }
+
+    for (;;) {
+        int sock2;
+        struct sockaddr_un remote;
+        int t = sizeof(remote);
+        if ((sock2 = accept(sock, (struct sockaddr *)&remote, &t)) == -1) { 
+            BLog(BLOG_ERROR, "accept() failed: %s (sock = %d)\n", strerror(errno), sock);
+            continue;
+        }
+        if (ancil_recv_fd(sock2, &fd)) {
+            BLog(BLOG_ERROR, "ancil_recv_fd: %s (sock = %d)\n", strerror(errno), sock2);
+            close(sock2);
+        } else {
+            close(sock2);
+            BLog(BLOG_INFO, "received fd = %d", fd);
+            break;
+        }
+    }
+    close(sock);
 
     struct BTap_init_data init_data;
     init_data.dev_type = BTAP_DEV_TUN;
     init_data.init_type = BTAP_INIT_FD;
-    init_data.init.fd.fd = options.tun_fd;
+    init_data.init.fd.fd = fd;
     init_data.init.fd.mtu = options.tun_mtu;
 
     if (!BTap_Init2(&device, &ss, init_data, device_error_handler, NULL)) {

src/main/jni/libancillary/API

@@ -0,0 +1,139 @@
+  This library provide an easy interface to the black magic that can be done
+  on Unix domain sockets, like passing file descriptors from one process to
+  another.
+
+  Programs that uses this library should include the ancillary.h header file.
+  Nothing else is required.
+
+  All functions of this library require the following header:
+
+	#include <ancillary.h>
+
+  At this time, the only ancillary data defined by the Single Unix
+  Specification (v3) is file descriptors.
+
+Passing file descriptors
+
+	int ancil_send_fd(socket, file_descriptor)
+	  int socket: the Unix socket
+	  int file_descriptor: the file descriptor
+	  Return value: 0 for success, -1 for failure.
+
+  Sends one file descriptor on a socket.
+  In case of failure, errno is set; the possible values are the ones of the
+  sendmsg(2) system call.
+
+
+	int ancil_recv_fd(socket, file_descriptor)
+	  int socket: the Unix socket
+	  int *file_descriptor: pointer to the returned file descriptor
+	  Return value: 0 for success, -1 for failure
+
+  Receives one file descriptor from a socket.
+  In case of success, the file descriptor is stored in the integer pointed
+  to by file_descriptor.
+  In case of failure, errno is set; the possible values are the ones of the
+  recvmsg(2) system call.
+  The behavior is undefined if the recv_fd does not match a send_fd* on the
+  other side.
+
+
+	int ancil_send_fds(socket, file_descriptors, num_file_descriptors)
+	  int socket: the Unix socket
+	  const int *file_descriptors: array of file descriptors
+	  unsigned num_file_descriptors: number of file descriptors
+	  Return value: 0 for success, -1 for failure
+
+  Sends several file descriptors on a socket.
+  In case of failure, errno is set; the possible values are the ones of the
+  sendmsg(2) system call.
+  The maximum number of file descriptors that can be sent using this
+  function is ANCIL_MAX_N_FDS; the behavior is undefined in case of
+  overflow, probably a stack corruption.
+
+
+	int ancil_recv_fds(socket, file_descriptors, num_file_descriptors)
+	  int socket: the Unix socket
+	  int *file_descriptors: return array of file descriptors
+	  unsigned num_file_descriptors: number of file descriptors
+	  Return value: number of received fd for success, -1 for failure
+
+  Receives several file descriptors from a socket, no more than
+  num_file_descriptors.
+  In case of success, the received file descriptors are stored in the array
+  pointed to by file_descriptors.
+  In case of failure, errno is set; the possible values are the ones of the
+  recvmsg(2) system call.
+  The maximum number of file descriptors that can be received using this
+  function is ANCIL_MAX_N_FDS; the behavior is undefined in case of
+  overflow, probably a stack corruption.
+  The behavior is undefined if the recv_fds does not match a send_fd* on
+  the other side, or if the number of received file descriptors is more than
+  num_file_descriptors.
+
+
+	int ancil_send_fds_with_buffer(socket, fds, num, buffer)
+	  int socket: the Unix socket
+	  const int *fds: array of file descriptors
+	  unsigned num: number of file descriptors
+	  void *buffer: buffer to hold the system data structures
+	  Return value: 0 for success, -1 for failure
+
+  Sends several file descriptors on a socket.
+  In case of failure, errno is set; the possible values are the ones of the
+  sendmsg(2) system call.
+  The buffer argument must point to a memory area large enough to hold the
+  system data structures, see ANCIL_FD_BUFFER.
+
+
+	int ancil_send_fds_with_buffer(socket, fds, num, buffer)
+	  int socket: the Unix socket
+	  int *fds: return array of file descriptors
+	  unsigned num: number of file descriptors
+	  void *buffer: buffer to hold the system data structures
+	  Return value: number of received fd for success, -1 for failure
+
+  Receives several file descriptors from a socket, no more than
+  num_file_descriptors.
+  In case of success, the received file descriptors are stored in the array
+  pointed to by file_descriptors.
+  In case of failure, errno is set; the possible values are the ones of the
+  recvmsg(2) system call.
+  The behavior is undefined if the recv_fds does not match a send_fd* on
+  the other side, or if the number of received file descriptors is more than
+  num_file_descriptors.
+  The buffer argument must point to a memory area large enough to hold the
+  system data structures, see ANCIL_FD_BUFFER.
+
+
+	ANCIL_MAX_N_FDS
+
+  Maximum number of file descriptors that can be sent with the sent_fds and
+  recv_fds functions. If you have to send more at once, use the
+  *_with_buffer versions. The value is enough to send "quite a few" file
+  descriptors.
+
+
+	ANCIL_FD_BUFFER(n)
+	  int n: number of file descriptors
+
+  Expands to a structure data type large enough to hold the system data
+  structures for n file descriptors. So the address of a variable declared
+  of type ANCIL_FD_BUFFER(n) is suitable as the buffer argument for
+  *_with_buffer on n file descriptors.
+  To use this macro, you need <sys/types.h> and <sys/socket.h>. Bevare: with
+  Solaris, the _XPG4_2 macro must be defined before sys/socket is included.
+
+
+Tuning the compilation
+
+  This library is designed to be included in projects, not installed in
+  /usr/lib. If your project does not use some of the functions, the
+  TUNE_OPTS variable in the Makefile allows not to build them. It is a list
+  of proprocessor options:
+
+  -DNDEBUG: turn assertions off (see assert(3))
+  -DSPARE_SEND_FDS: do not build ancil_send_fds
+  -DSPARE_SEND_FD:  do not build ancil_send_fd
+  -DSPARE_RECV_FDS: do not build ancil_recv_fds
+  -DSPARE_RECV_FD:  do not build ancil_recv_fd

src/main/jni/libancillary/COPYING

@@ -0,0 +1,21 @@
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright notice,
+    this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in the
+    documentation and/or other materials provided with the distribution.
+ 3. The name of the author may not be used to endorse or promote products
+    derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.

src/main/jni/libancillary/Makefile

@@ -0,0 +1,73 @@
+###########################################################################
+# libancillary - black magic on Unix domain sockets
+# (C) Nicolas George
+# Makefile - guess what
+###########################################################################
+
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+# 
+#  1. Redistributions of source code must retain the above copyright notice,
+#     this list of conditions and the following disclaimer.
+#  2. Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in the
+#     documentation and/or other materials provided with the distribution.
+#  3. The name of the author may not be used to endorse or promote products
+#     derived from this software without specific prior written permission.
+# 
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+
+CC=gcc
+CFLAGS=-Wall -g -O2
+LDFLAGS=
+LIBS=
+AR=ar
+RANLIB=ranlib
+RM=rm
+CP=cp
+MKDIR=mkdir
+TAR=tar
+GZIP=gzip -9
+
+NAME=libancillary
+DISTRIBUTION=API COPYING Makefile ancillary.h fd_send.c fd_recv.c test.c
+VERSION=0.9.1
+
+OBJECTS=fd_send.o fd_recv.o
+
+TUNE_OPTS=-DNDEBUG
+#TUNE_OPTS=-DNDEBUG \
+	-DSPARE_SEND_FDS -DSPARE_SEND_FD -DSPARE_RECV_FDS -DSPARE_RECV_FD
+
+.c.o:
+	$(CC) -c $(CFLAGS) $(TUNE_OPTS) $<
+
+all: libancillary.a
+
+libancillary.a: $(OBJECTS)
+	$(AR) cr $@ $(OBJECTS)
+	$(RANLIB) $@
+
+fd_send.o: ancillary.h
+fd_recv.o: ancillary.h
+
+test: test.c libancillary.a
+	$(CC) -o $@ $(CFLAGS) $(LDFLAGS) -L. test.c -lancillary $(LIBS)
+
+clean:
+	-$(RM) -f *.o *.a test 
+
+dist:
+	$(MKDIR) $(NAME)-$(VERSION)
+	$(CP) $(DISTRIBUTION) $(NAME)-$(VERSION)
+	$(TAR) -cf - $(NAME)-$(VERSION) | $(GZIP) > $(NAME)-$(VERSION).tar.gz
+	$(RM) -rf $(NAME)-$(VERSION)

src/main/jni/libancillary/ancillary.h

@@ -0,0 +1,131 @@
+/***************************************************************************
+ * libancillary - black magic on Unix domain sockets
+ * (C) Nicolas George
+ * ancillary.c - public header
+ ***************************************************************************/
+
+/*
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 
+ *  1. Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *  2. Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *  3. The name of the author may not be used to endorse or promote products
+ *     derived from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+
+#ifndef ANCILLARY_H__
+#define ANCILLARY_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/***************************************************************************
+ * Start of the readable part.
+ ***************************************************************************/
+
+#define ANCIL_MAX_N_FDS 960
+/*
+ * Maximum number of fds that can be sent or received using the "esay"
+ * functions; this is so that all can fit in one page.
+ */
+
+extern int
+ancil_send_fds_with_buffer(int, const int *, unsigned, void *);
+/*
+ * ancil_send_fds_with_buffer(sock, n_fds, fds, buffer)
+ *
+ * Sends the file descriptors in the array pointed by fds, of length n_fds
+ * on the socket sock.
+ * buffer is a writeable memory area large enough to hold the required data
+ * structures.
+ * Returns: -1 and errno in case of error, 0 in case of success.
+ */
+
+extern int
+ancil_recv_fds_with_buffer(int, int *, unsigned, void *);
+/*
+ * ancil_recv_fds_with_buffer(sock, n_fds, fds, buffer)
+ *
+ * Receives *n_fds file descriptors into the array pointed by fds
+ * from the socket sock.
+ * buffer is a writeable memory area large enough to hold the required data
+ * structures.
+ * Returns: -1 and errno in case of error, the actual number of received fd
+ * in case of success
+ */
+
+#define ANCIL_FD_BUFFER(n) \
+    struct { \
+	struct cmsghdr h; \
+	int fd[n]; \
+    }
+/* ANCIL_FD_BUFFER(n)
+ *
+ * A structure type suitable to be used as buffer for n file descriptors.
+ * Requires <sys/socket.h>.
+ * Example:
+ * ANCIL_FD_BUFFER(42) buffer;
+ * ancil_recv_fds_with_buffer(sock, 42, my_fds, &buffer);
+ */
+
+extern int
+ancil_send_fds(int, const int *, unsigned);
+/*
+ * ancil_send_fds(sock, n_fds, fds)
+ *
+ * Sends the file descriptors in the array pointed by fds, of length n_fds
+ * on the socket sock.
+ * n_fds must not be greater than ANCIL_MAX_N_FDS.
+ * Returns: -1 and errno in case of error, 0 in case of success.
+ */
+
+extern int
+ancil_recv_fds(int, int *, unsigned);
+/*
+ * ancil_recv_fds(sock, n_fds, fds)
+ *
+ * Receives *n_fds file descriptors into the array pointed by fds
+ * from the socket sock.
+ * *n_fds must not be greater than ANCIL_MAX_N_FDS.
+ * Returns: -1 and errno in case of error, the actual number of received fd
+ * in case of success.
+ */
+
+
+extern int
+ancil_send_fd(int, int);
+/* ancil_recv_fd(sock, fd);
+ *
+ * Sends the file descriptor fd on the socket sock.
+ * Returns : -1 and errno in case of error, 0 in case of success.
+ */
+
+extern int
+ancil_recv_fd(int, int *);
+/* ancil_send_fd(sock, &fd);
+ *
+ * Receives the file descriptor fd from the socket sock.
+ * Returns : -1 and errno in case of error, 0 in case of success.
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ANCILLARY_H__ */

src/main/jni/libancillary/fd_recv.c

@@ -0,0 +1,98 @@
+/***************************************************************************
+ * libancillary - black magic on Unix domain sockets
+ * (C) Nicolas George
+ * fd_send.c - receiving file descriptors
+ ***************************************************************************/
+
+/*
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 
+ *  1. Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *  2. Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *  3. The name of the author may not be used to endorse or promote products
+ *     derived from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+
+#ifndef _XPG4_2 /* Solaris sucks */
+# define _XPG4_2
+#endif
+
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/uio.h>
+#include <assert.h>
+#if defined(__FreeBSD__)
+# include <sys/param.h> /* FreeBSD sucks */
+#endif
+
+#include "ancillary.h"
+
+int
+ancil_recv_fds_with_buffer(int sock, int *fds, unsigned n_fds, void *buffer)
+{
+    struct msghdr msghdr;
+    char nothing;
+    struct iovec nothing_ptr;
+    struct cmsghdr *cmsg;
+    int i;
+
+    nothing_ptr.iov_base = &nothing;
+    nothing_ptr.iov_len = 1;
+    msghdr.msg_name = NULL;
+    msghdr.msg_namelen = 0;
+    msghdr.msg_iov = &nothing_ptr;
+    msghdr.msg_iovlen = 1;
+    msghdr.msg_flags = 0;
+    msghdr.msg_control = buffer;
+    msghdr.msg_controllen = sizeof(struct cmsghdr) + sizeof(int) * n_fds;
+    cmsg = CMSG_FIRSTHDR(&msghdr);
+    cmsg->cmsg_len = msghdr.msg_controllen;
+    cmsg->cmsg_level = SOL_SOCKET;
+    cmsg->cmsg_type = SCM_RIGHTS;
+    for(i = 0; i < n_fds; i++)
+	((int *)CMSG_DATA(cmsg))[i] = -1;
+    
+    if(recvmsg(sock, &msghdr, 0) < 0)
+	return(-1);
+    for(i = 0; i < n_fds; i++)
+	fds[i] = ((int *)CMSG_DATA(cmsg))[i];
+    n_fds = (msghdr.msg_controllen - sizeof(struct cmsghdr)) / sizeof(int);
+    return(n_fds);
+}
+
+#ifndef SPARE_RECV_FDS
+int
+ancil_recv_fds(int sock, int *fd, unsigned n_fds)
+{
+    ANCIL_FD_BUFFER(ANCIL_MAX_N_FDS) buffer;
+
+    assert(n_fds <= ANCIL_MAX_N_FDS);
+    return(ancil_recv_fds_with_buffer(sock, fd, n_fds, &buffer));
+}
+#endif /* SPARE_RECV_FDS */
+
+#ifndef SPARE_RECV_FD
+int
+ancil_recv_fd(int sock, int *fd)
+{
+    ANCIL_FD_BUFFER(1) buffer;
+
+    return(ancil_recv_fds_with_buffer(sock, fd, 1, &buffer) == 1 ? 0 : -1);
+}
+#endif /* SPARE_RECV_FD */

src/main/jni/libancillary/fd_send.c

@@ -0,0 +1,92 @@
+/***************************************************************************
+ * libancillary - black magic on Unix domain sockets
+ * (C) Nicolas George
+ * fd_send.c - sending file descriptors
+ ***************************************************************************/
+
+/*
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 
+ *  1. Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *  2. Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *  3. The name of the author may not be used to endorse or promote products
+ *     derived from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+
+#ifndef _XPG4_2 /* Solaris sucks */
+# define _XPG4_2
+#endif
+
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/uio.h>
+#include <assert.h>
+#if defined(__FreeBSD__)
+# include <sys/param.h> /* FreeBSD sucks */
+#endif
+
+#include "ancillary.h"
+
+int
+ancil_send_fds_with_buffer(int sock, const int *fds, unsigned n_fds, void *buffer)
+{
+    struct msghdr msghdr;
+    char nothing = '!';
+    struct iovec nothing_ptr;
+    struct cmsghdr *cmsg;
+    int i;
+
+    nothing_ptr.iov_base = &nothing;
+    nothing_ptr.iov_len = 1;
+    msghdr.msg_name = NULL;
+    msghdr.msg_namelen = 0;
+    msghdr.msg_iov = &nothing_ptr;
+    msghdr.msg_iovlen = 1;
+    msghdr.msg_flags = 0;
+    msghdr.msg_control = buffer;
+    msghdr.msg_controllen = sizeof(struct cmsghdr) + sizeof(int) * n_fds;
+    cmsg = CMSG_FIRSTHDR(&msghdr);
+    cmsg->cmsg_len = msghdr.msg_controllen;
+    cmsg->cmsg_level = SOL_SOCKET;
+    cmsg->cmsg_type = SCM_RIGHTS;
+    for(i = 0; i < n_fds; i++)
+	((int *)CMSG_DATA(cmsg))[i] = fds[i];
+    return(sendmsg(sock, &msghdr, 0) >= 0 ? 0 : -1);
+}
+
+#ifndef SPARE_SEND_FDS
+int
+ancil_send_fds(int sock, const int *fds, unsigned n_fds)
+{
+    ANCIL_FD_BUFFER(ANCIL_MAX_N_FDS) buffer;
+
+    assert(n_fds <= ANCIL_MAX_N_FDS);
+    return(ancil_send_fds_with_buffer(sock, fds, n_fds, &buffer));
+}
+#endif /* SPARE_SEND_FDS */
+
+#ifndef SPARE_SEND_FD
+int
+ancil_send_fd(int sock, int fd)
+{
+    ANCIL_FD_BUFFER(1) buffer;
+
+    return(ancil_send_fds_with_buffer(sock, &fd, 1, &buffer));
+}
+#endif /* SPARE_SEND_FD */

src/main/jni/libancillary/test.c

@@ -0,0 +1,112 @@
+/***************************************************************************
+ * libancillary - black magic on Unix domain sockets
+ * (C) Nicolas George
+ * test.c - testing and example program
+ ***************************************************************************/
+
+/*
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 
+ *  1. Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *  2. Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *  3. The name of the author may not be used to endorse or promote products
+ *     derived from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <sys/wait.h>
+#include <sys/socket.h>
+#include "ancillary.h"
+
+void child_process(int sock)
+{
+    int fd;
+    int fds[3], nfds;
+    char b[] = "This is on the received fd!\n";
+
+    if(ancil_recv_fd(sock, &fd)) {
+	perror("ancil_recv_fd");
+	exit(1);
+    } else {
+	printf("Received fd: %d\n", fd);
+    }
+    write(fd, b, sizeof(b));
+    close(fd);
+    sleep(2);
+
+    nfds = ancil_recv_fds(sock, fds, 3);
+    if(nfds < 0) {
+	perror("ancil_recv_fds");
+	exit(1);
+    } else {
+	printf("Received %d/3 fds : %d %d %d.\n", nfds,
+	    fds[0], fds[1], fds[2]);
+    }
+}
+
+void parent_process(int sock)
+{
+    int fds[2] = { 1, 2 };
+
+    if(ancil_send_fd(sock, 1)) {
+	perror("ancil_send_fd");
+	exit(1);
+    } else {
+	printf("Sent fd.\n");
+    }
+    sleep(1);
+
+    if(ancil_send_fds(sock, fds, 2)) {
+	perror("ancil_send_fds");
+	exit(1);
+    } else {
+	printf("Sent two fds.\n");
+    }
+}
+
+int main(void)
+{
+    int sock[2];
+
+    if(socketpair(PF_UNIX, SOCK_STREAM, 0, sock)) {
+	perror("socketpair");
+	exit(1);
+    } else {
+	printf("Established socket pair: (%d, %d)\n", sock[0], sock[1]);
+    }
+
+    switch(fork()) {
+	case 0:
+	    close(sock[0]);
+	    child_process(sock[1]);
+	    break;
+	case -1:
+	    perror("fork");
+	    exit(1);
+	default:
+	    close(sock[1]);
+	    parent_process(sock[0]);
+	    wait(NULL);
+	    break;
+    }
+    return(0);
+}

src/main/jni/system.cpp

@@ -5,8 +5,15 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include <errno.h>
 #include <cpu-features.h>
 
+#include <sys/un.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <ancillary.h>
+
 #define LOGI(...) do { __android_log_print(ANDROID_LOG_INFO, LOG_TAG, __VA_ARGS__); } while(0)
 #define LOGW(...) do { __android_log_print(ANDROID_LOG_WARN, LOG_TAG, __VA_ARGS__); } while(0)
 #define LOGE(...) do { __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__); } while(0)
@@ -36,9 +43,46 @@ void Java_com_github_shadowsocks_system_exec(JNIEnv *env, jobject thiz, jstring
     env->ReleaseStringUTFChars(cmd, str);
 }
 
+void Java_com_github_shadowsocks_system_jniclose(JNIEnv *env, jobject thiz, jint fd) {
+    close(fd);
+}
+
+jint Java_com_github_shadowsocks_system_sendfd(JNIEnv *env, jobject thiz, jint tun_fd) {
+    int fd;
+    struct sockaddr_un addr;
+
+    if ( (fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
+        LOGE("socket() failed: %s (socket fd = %d)\n", strerror(errno), fd);
+        return (jint)-1;
+    }
+
+    memset(&addr, 0, sizeof(addr));
+    addr.sun_family = AF_UNIX;
+    strncpy(addr.sun_path, "/data/data/com.github.shadowsocks/sock_path", sizeof(addr.sun_path)-1);
+
+    if (connect(fd, (struct sockaddr*)&addr, sizeof(addr)) == -1) {
+        LOGE("connect() failed: %s (fd = %d)\n", strerror(errno), fd);
+        close(fd);
+        return (jint)-1;
+    }
+
+    if (ancil_send_fd(fd, tun_fd)) {
+        LOGE("ancil_send_fd: %s", strerror(errno));
+        close(fd);
+        return (jint)-1;
+    }
+
+    close(fd);
+    return 0;
+}
+
 static const char *classPathName = "com/github/shadowsocks/System";
 
 static JNINativeMethod method_table[] = {
+    { "jniclose", "(I)V",
+        (void*) Java_com_github_shadowsocks_system_jniclose },
+    { "sendfd", "(I)I",
+        (void*) Java_com_github_shadowsocks_system_sendfd },
     { "exec", "(Ljava/lang/String;)V",
         (void*) Java_com_github_shadowsocks_system_exec },
     { "getABI", "()Ljava/lang/String;",

src/main/res/values/arrays.xml

@@ -85,7 +85,25 @@
         <item>101.0.0.0/8</item>
         <item>102.0.0.0/7</item>
         <item>104.0.0.0/5</item>
-        <item>112.0.0.0/5</item>
+        <item>112.0.0.0/7</item>
+        <item>114.0.0.0/10</item>
+        <item>114.64.0.0/11</item>
+        <item>114.96.0.0/12</item>
+        <item>114.112.0.0/15</item>
+        <item>114.114.0.0/18</item>
+        <item>114.114.64.0/19</item>
+        <item>114.114.96.0/20</item>
+        <item>114.114.112.0/23</item>
+        <item>114.114.115.0/24</item>
+        <item>114.114.116.0/22</item>
+        <item>114.114.120.0/21</item>
+        <item>114.114.128.0/17</item>
+        <item>114.115.0.0/16</item>
+        <item>114.116.0.0/14</item>
+        <item>114.120.0.0/13</item>
+        <item>114.128.0.0/9</item>
+        <item>115.0.0.0/8</item>
+        <item>116.0.0.0/6</item>
         <item>120.0.0.0/6</item>
         <item>124.0.0.0/7</item>
         <item>126.0.0.0/8</item>
@@ -190,6 +208,25 @@
         <item>203.64.0.0/10</item>
         <item>203.128.0.0/9</item>
         <item>204.0.0.0/6</item>
-        <item>208.0.0.0/4</item>
+        <item>208.0.0.0/5</item>
+        <item>216.0.0.0/6</item>
+        <item>220.0.0.0/7</item>
+        <item>222.0.0.0/8</item>
+        <item>223.0.0.0/14</item>
+        <item>223.4.0.0/16</item>
+        <item>223.5.0.0/22</item>
+        <item>223.5.4.0/24</item>
+        <item>223.5.6.0/23</item>
+        <item>223.5.8.0/21</item>
+        <item>223.5.16.0/20</item>
+        <item>223.5.32.0/19</item>
+        <item>223.5.64.0/18</item>
+        <item>223.5.128.0/17</item>
+        <item>223.6.0.0/15</item>
+        <item>223.8.0.0/13</item>
+        <item>223.16.0.0/12</item>
+        <item>223.32.0.0/11</item>
+        <item>223.64.0.0/10</item>
+        <item>223.128.0.0/9</item>
     </string-array>
 </resources>

src/main/scala/com/github/shadowsocks/Shadowsocks.scala

@@ -474,22 +474,22 @@ class Shadowsocks
 
     addPreferencesFromResource(R.xml.pref_all)
 
-    // Initialize the profile
-    currentProfile = {
-      profileManager.getProfile(settings.getInt(Key.profileId, -1)) getOrElse currentProfile
-    }
-
     // Update the profile
     if (!status.getBoolean(getVersionName, false)) {
       val h = showProgress(getString(R.string.initializing))
       status.edit.putBoolean(getVersionName, true).apply()
+      currentProfile = profileManager.create()
       spawn {
-        reset()
-        currentProfile = profileManager.create()
+        install()
         h.sendEmptyMessage(0)
       }
     }
 
+    // Initialize the profile
+    currentProfile = {
+      profileManager.getProfile(settings.getInt(Key.profileId, -1)) getOrElse currentProfile
+    }
+
     // Initialize drawer
     menuAdapter.setActiveId(settings.getInt(Key.profileId, -1))
     menuAdapter.setListener(this)
@@ -847,7 +847,8 @@ class Shadowsocks
     ConfigUtils.refresh(this)
 
     // Check if profile list changed
-    if (currentProfile.id != settings.getInt(Key.profileId, -1))
+    val id = settings.getInt(Key.profileId, -1)
+    if (id != -1 && id != currentProfile.id)
       reloadProfile()
   }
 
@@ -915,10 +916,7 @@ class Shadowsocks
     Console.runRootCommand(ab.toArray)
   }
 
-  def reset() {
-
-    crashRecovery()
-
+  def install() {
     copyAssets(System.getABI)
 
     val ab = new ArrayBuffer[String]
@@ -926,15 +924,25 @@ class Shadowsocks
       ab.append("chmod 755 " + Path.BASE + executable)
     }
     Console.runCommand(ab.toArray)
+  }
 
+  def reset() {
+
+    crashRecovery()
+
+    install()
   }
 
   private def recovery() {
     val h = showProgress(getString(R.string.recovering))
-    serviceStop()
     spawn {
       reset()
-      h.sendEmptyMessage(0)
+      handler.post(new Runnable {
+        override def run() {
+          serviceStop
+          h.sendEmptyMessage(0)
+        }
+      })
     }
   }
 

src/main/scala/com/github/shadowsocks/ShadowsocksVpnService.scala

@@ -61,18 +61,16 @@ import scala.concurrent.ops._
 
 class ShadowsocksVpnService extends VpnService with BaseService {
 
+  private lazy val application = getApplication.asInstanceOf[ShadowsocksApplication]
   val TAG = "ShadowsocksVpnService"
-
   val VPN_MTU = 1500
   val PRIVATE_VLAN = "26.26.26.%s"
-
   var conn: ParcelFileDescriptor = null
   var notificationManager: NotificationManager = null
   var receiver: BroadcastReceiver = null
   var apps: Array[ProxiedApp] = null
   var config: Config = null
-
-  private lazy val application = getApplication.asInstanceOf[ShadowsocksApplication]
+  var vpnThread: ShadowsocksVpnThread = null
 
   def isByass(net: SubnetUtils): Boolean = {
     val info = net.getInfo
@@ -95,81 +93,71 @@ class ShadowsocksVpnService extends VpnService with BaseService {
     }
   }
 
-  def startShadowsocksDaemon() {
-
-    if (Utils.isLollipopOrAbove && config.route != Route.ALL) {
-      val acl: Array[String] = config.route match {
-        case Route.BYPASS_LAN => getResources.getStringArray(R.array.private_route)
-        case Route.BYPASS_CHN => getResources.getStringArray(R.array.chn_route_full)
-      }
-      ConfigUtils.printToFile(new File(Path.BASE + "acl.list"))(p => {
-        acl.foreach(item => p.println(item))
-      })
+  override def onBind(intent: Intent): IBinder = {
+    val action = intent.getAction
+    if (VpnService.SERVICE_INTERFACE == action) {
+      return super.onBind(intent)
+    } else if (Action.SERVICE == action) {
+      return binder
     }
-
-    val conf = ConfigUtils
-      .SHADOWSOCKS.formatLocal(Locale.ENGLISH, config.proxy, config.remotePort, config.localPort,
-        config.sitekey, config.encMethod, 10)
-    ConfigUtils.printToFile(new File(Path.BASE + "ss-local-vpn.conf"))(p => {
-      p.println(conf)
-    })
-
-    val cmd = new ArrayBuffer[String]
-    cmd +=(Path.BASE + "ss-local", "-u"
-      , "-b" , "127.0.0.1"
-      , "-t" , "600"
-      , "-c" , Path.BASE + "ss-local-vpn.conf"
-      , "-f" , Path.BASE + "ss-local-vpn.pid")
-
-    if (Utils.isLollipopOrAbove && config.route != Route.ALL) {
-      cmd += "--acl"
-      cmd += (Path.BASE + "acl.list")
-    }
-
-    if (BuildConfig.DEBUG) Log.d(TAG, cmd.mkString(" "))
-    Console.runCommand(cmd.mkString(" "))
+    null
   }
 
-  def startDnsTunnel() = {
-    val conf = ConfigUtils
-      .SHADOWSOCKS.formatLocal(Locale.ENGLISH, config.proxy, config.remotePort, 8163,
-        config.sitekey, config.encMethod, 10)
-    ConfigUtils.printToFile(new File(Path.BASE + "ss-tunnel-vpn.conf"))(p => {
-      p.println(conf)
-    })
-    val cmd = new ArrayBuffer[String]
-    cmd +=(Path.BASE + "ss-tunnel"
-      , "-u"
-      , "-t" , "10"
-      , "-b" , "127.0.0.1"
-      , "-l" , "8163"
-      , "-L" , "8.8.8.8:53"
-      , "-c" , Path.BASE + "ss-tunnel-vpn.conf"
-      , "-f" , Path.BASE + "ss-tunnel-vpn.pid")
-
-    if (BuildConfig.DEBUG) Log.d(TAG, cmd.mkString(" "))
-    Console.runCommand(cmd.mkString(" "))
+  override def onDestroy() {
+    super.onDestroy()
+    if (vpnThread != null) vpnThread.stopThread()
   }
 
-  def startDnsDaemon() {
-    val conf = {
-      if (config.route == Route.BYPASS_CHN) {
-        val reject = ConfigUtils.getRejectList(getContext, application)
-        val blackList = ConfigUtils.getBlackList(getContext, application)
-        ConfigUtils.PDNSD_DIRECT.formatLocal(Locale.ENGLISH, "0.0.0.0", 8153,
-          Path.BASE + "pdnsd-vpn.pid", reject, blackList, 8163)
-      } else {
-        ConfigUtils.PDNSD_LOCAL.formatLocal(Locale.ENGLISH, "0.0.0.0", 8153,
-          Path.BASE + "pdnsd-vpn.pid", 8163)
-      }
-    }
-    ConfigUtils.printToFile(new File(Path.BASE + "pdnsd-vpn.conf"))(p => {
-      p.println(conf)
-    })
-    val cmd = Path.BASE + "pdnsd -c " + Path.BASE + "pdnsd-vpn.conf"
+  override def onCreate() {
+    super.onCreate()
 
-    if (BuildConfig.DEBUG) Log.d(TAG, cmd)
-    Console.runCommand(cmd)
+    ConfigUtils.refresh(this)
+
+    notificationManager = getSystemService(Context.NOTIFICATION_SERVICE)
+      .asInstanceOf[NotificationManager]
+
+    vpnThread = new ShadowsocksVpnThread(this)
+    vpnThread.start()
+  }
+
+  override def onRevoke() {
+    stopRunner()
+  }
+
+  override def stopRunner() {
+
+    // channge the state
+    changeState(State.STOPPING)
+
+    // send event
+    application.tracker.send(new HitBuilders.EventBuilder()
+      .setCategory(TAG)
+      .setAction("stop")
+      .setLabel(getVersionName)
+      .build())
+
+    // reset VPN
+    killProcesses()
+
+    // close connections
+    if (conn != null) {
+      conn.close()
+      conn = null
+    }
+
+    // stop the service if no callback registered
+    if (getCallbackCount == 0) {
+      stopSelf()
+    }
+
+    // clean up the context
+    if (receiver != null) {
+      unregisterReceiver(receiver)
+      receiver = null
+    }
+
+    // channge the state
+    changeState(State.STOPPED)
   }
 
   def getVersionName: String = {
@@ -184,195 +172,6 @@ class ShadowsocksVpnService extends VpnService with BaseService {
     version
   }
 
-  def startVpn() {
-
-    val builder = new Builder()
-    builder
-      .setSession(config.profileName)
-      .setMtu(VPN_MTU)
-      .addAddress(PRIVATE_VLAN.formatLocal(Locale.ENGLISH, "1"), 24)
-      .addDnsServer("8.8.8.8")
-
-    if (Utils.isLollipopOrAbove) {
-
-      builder.allowFamily(android.system.OsConstants.AF_INET6)
-
-      if (!config.isGlobalProxy) {
-        val apps = AppManager.getProxiedApps(this, config.proxiedAppString)
-        val pkgSet: mutable.HashSet[String] = new mutable.HashSet[String]
-        for (app <- apps) {
-          if (app.proxied) {
-            pkgSet.add(app.packageName)
-          }
-        }
-        for (pkg <- pkgSet) {
-          if (!config.isBypassApps) {
-            builder.addAllowedApplication(pkg)
-          } else {
-            builder.addDisallowedApplication(pkg)
-          }
-        }
-
-        if (config.isBypassApps) {
-          builder.addDisallowedApplication(this.getPackageName)
-        }
-      } else {
-        builder.addDisallowedApplication(this.getPackageName)
-      }
-    }
-
-    if (InetAddressUtils.isIPv6Address(config.proxy)) {
-      builder.addRoute("0.0.0.0", 0)
-    } else {
-      if (!Utils.isLollipopOrAbove) {
-        config.route match {
-          case Route.BYPASS_LAN =>
-            for (i <- 1 to 223) {
-              if (i != 26 && i != 127) {
-                val addr = i.toString + ".0.0.0"
-                val cidr = addr + "/8"
-                val net = new SubnetUtils(cidr)
-
-                if (!isByass(net) && !isPrivateA(i)) {
-                  builder.addRoute(addr, 8)
-                } else {
-                  for (j <- 0 to 255) {
-                    val subAddr = i.toString + "." + j.toString + ".0.0"
-                    val subCidr = subAddr + "/16"
-                    val subNet = new SubnetUtils(subCidr)
-                    if (!isByass(subNet) && !isPrivateB(i, j)) {
-                      builder.addRoute(subAddr, 16)
-                    }
-                  }
-                }
-              }
-            }
-          case Route.BYPASS_CHN =>
-            val list = {
-              if (Build.VERSION.SDK_INT == Build.VERSION_CODES.KITKAT) {
-                getResources.getStringArray(R.array.simple_route)
-              } else {
-                getResources.getStringArray(R.array.gfw_route)
-              }
-            }
-            list.foreach(cidr => {
-              val net = new SubnetUtils(cidr)
-              if (!isByass(net)) {
-                val addr = cidr.split('/')
-                builder.addRoute(addr(0), addr(1).toInt)
-              }
-            })
-          case Route.ALL =>
-            for (i <- 1 to 223) {
-              if (i != 26 && i != 127) {
-                val addr = i.toString + ".0.0.0"
-                val cidr = addr + "/8"
-                val net = new SubnetUtils(cidr)
-
-                if (!isByass(net)) {
-                  builder.addRoute(addr, 8)
-                } else {
-                  for (j <- 0 to 255) {
-                    val subAddr = i.toString + "." + j.toString + ".0.0"
-                    val subCidr = subAddr + "/16"
-                    val subNet = new SubnetUtils(subCidr)
-                    if (!isByass(subNet)) {
-                      builder.addRoute(subAddr, 16)
-                    }
-                  }
-                }
-              }
-            }
-        }
-      } else {
-        if (config.route == Route.ALL) {
-          builder.addRoute("0.0.0.0", 0)
-        } else {
-          val privateList = getResources.getStringArray(R.array.bypass_private_route)
-          privateList.foreach(cidr => {
-            val addr = cidr.split('/')
-            builder.addRoute(addr(0), addr(1).toInt)
-          })
-        }
-      }
-    }
-
-    builder.addRoute("8.8.0.0", 16)
-
-    try {
-      conn = builder.establish()
-    } catch {
-      case ex: IllegalStateException =>
-        changeState(State.STOPPED, ex.getMessage)
-        conn = null
-      case ex: Exception => conn = null
-    }
-
-    if (conn == null) {
-      stopRunner()
-      return
-    }
-
-    val fd = conn.getFd
-
-    var cmd = (Path.BASE +
-      "tun2socks --netif-ipaddr %s "
-      + "--netif-netmask 255.255.255.0 "
-      + "--socks-server-addr 127.0.0.1:%d "
-      + "--tunfd %d "
-      + "--tunmtu %d "
-      + "--loglevel 3 "
-      + "--pid %stun2socks-vpn.pid")
-      .formatLocal(Locale.ENGLISH, PRIVATE_VLAN.formatLocal(Locale.ENGLISH, "2"), config.localPort, fd, VPN_MTU, Path.BASE)
-
-    if (config.isUdpDns)
-      cmd += " --enable-udprelay"
-    else
-      cmd += " --dnsgw %s:8153".formatLocal(Locale.ENGLISH, PRIVATE_VLAN.formatLocal(Locale.ENGLISH, "1"))
-
-    if (Utils.isLollipopOrAbove) {
-      cmd += " --fake-proc"
-    }
-
-    if (BuildConfig.DEBUG) Log.d(TAG, cmd)
-
-    System.exec(cmd)
-  }
-
-  /** Called when the activity is first created. */
-  def handleConnection: Boolean = {
-    startShadowsocksDaemon()
-    if (!config.isUdpDns) {
-      startDnsDaemon()
-      startDnsTunnel()
-    }
-    startVpn()
-    true
-  }
-
-  override def onBind(intent: Intent): IBinder = {
-    val action = intent.getAction
-    if (VpnService.SERVICE_INTERFACE == action) {
-      return super.onBind(intent)
-    } else if (Action.SERVICE == action) {
-      return binder
-    }
-    null
-  }
-
-  override def onCreate() {
-    super.onCreate()
-
-    ConfigUtils.refresh(this)
-
-    notificationManager = getSystemService(Context.NOTIFICATION_SERVICE)
-      .asInstanceOf[NotificationManager]
-  }
-
-  override def onRevoke() {
-    stopRunner()
-  }
-
   def killProcesses() {
     for (task <- Array("ss-local", "ss-tunnel", "pdnsd", "tun2socks")) {
       try {
@@ -458,40 +257,188 @@ class ShadowsocksVpnService extends VpnService with BaseService {
     }
   }
 
-  override def stopRunner() {
-
-    // channge the state
-    changeState(State.STOPPING)
-
-    // send event
-    application.tracker.send(new HitBuilders.EventBuilder()
-      .setCategory(TAG)
-      .setAction("stop")
-      .setLabel(getVersionName)
-      .build())
-
-    // reset VPN
-    killProcesses()
-
-    // close connections
-    if (conn != null) {
-      conn.close()
-      conn = null
+  /** Called when the activity is first created. */
+  def handleConnection: Boolean = {
+    startShadowsocksDaemon()
+    if (!config.isUdpDns) {
+      startDnsDaemon()
+      startDnsTunnel()
     }
 
-    // stop the service if no callback registered
-    if (getCallbackCount == 0) {
-      stopSelf()
+    val fd = startVpn()
+
+    if (fd != -1) {
+      var tries = 1
+      while (tries < 5) {
+        Thread.sleep(1000 * tries)
+        if (System.sendfd(fd) != -1) {
+          return true
+        }
+        tries += 1
+      }
+    }
+    false
+  }
+
+  def startShadowsocksDaemon() {
+
+    if (config.route != Route.ALL) {
+      val acl: Array[String] = config.route match {
+        case Route.BYPASS_LAN => getResources.getStringArray(R.array.private_route)
+        case Route.BYPASS_CHN => getResources.getStringArray(R.array.chn_route_full)
+      }
+      ConfigUtils.printToFile(new File(Path.BASE + "acl.list"))(p => {
+        acl.foreach(item => p.println(item))
+      })
     }
 
-    // clean up the context
-    if (receiver != null) {
-      unregisterReceiver(receiver)
-      receiver = null
+    val conf = ConfigUtils
+      .SHADOWSOCKS.formatLocal(Locale.ENGLISH, config.proxy, config.remotePort, config.localPort,
+        config.sitekey, config.encMethod, 10)
+    ConfigUtils.printToFile(new File(Path.BASE + "ss-local-vpn.conf"))(p => {
+      p.println(conf)
+    })
+
+    val cmd = new ArrayBuffer[String]
+    cmd +=(Path.BASE + "ss-local", "-V", "-u"
+      , "-b", "127.0.0.1"
+      , "-t", "600"
+      , "-c", Path.BASE + "ss-local-vpn.conf"
+      , "-f", Path.BASE + "ss-local-vpn.pid")
+
+    if (config.route != Route.ALL) {
+      cmd += "--acl"
+      cmd += (Path.BASE + "acl.list")
     }
 
-    // channge the state
-    changeState(State.STOPPED)
+    if (BuildConfig.DEBUG) Log.d(TAG, cmd.mkString(" "))
+    Console.runCommand(cmd.mkString(" "))
+  }
+
+  def startDnsTunnel() = {
+    val conf = ConfigUtils
+      .SHADOWSOCKS.formatLocal(Locale.ENGLISH, config.proxy, config.remotePort, 8163,
+        config.sitekey, config.encMethod, 10)
+    ConfigUtils.printToFile(new File(Path.BASE + "ss-tunnel-vpn.conf"))(p => {
+      p.println(conf)
+    })
+    val cmd = new ArrayBuffer[String]
+    cmd +=(Path.BASE + "ss-tunnel"
+      , "-V"
+      , "-u"
+      , "-t", "10"
+      , "-b", "127.0.0.1"
+      , "-l", "8163"
+      , "-L", "8.8.8.8:53"
+      , "-c", Path.BASE + "ss-tunnel-vpn.conf"
+      , "-f", Path.BASE + "ss-tunnel-vpn.pid")
+
+    if (BuildConfig.DEBUG) Log.d(TAG, cmd.mkString(" "))
+    Console.runCommand(cmd.mkString(" "))
+  }
+
+  def startDnsDaemon() {
+    val conf = {
+      if (config.route == Route.BYPASS_CHN) {
+        val reject = ConfigUtils.getRejectList(getContext, application)
+        val blackList = ConfigUtils.getBlackList(getContext, application)
+        ConfigUtils.PDNSD_DIRECT.formatLocal(Locale.ENGLISH, "0.0.0.0", 8153,
+          Path.BASE + "pdnsd-vpn.pid", reject, blackList, 8163)
+      } else {
+        ConfigUtils.PDNSD_LOCAL.formatLocal(Locale.ENGLISH, "0.0.0.0", 8153,
+          Path.BASE + "pdnsd-vpn.pid", 8163)
+      }
+    }
+    ConfigUtils.printToFile(new File(Path.BASE + "pdnsd-vpn.conf"))(p => {
+      p.println(conf)
+    })
+    val cmd = Path.BASE + "pdnsd -c " + Path.BASE + "pdnsd-vpn.conf"
+
+    if (BuildConfig.DEBUG) Log.d(TAG, cmd)
+    Console.runCommand(cmd)
+  }
+
+  override def getContext = getBaseContext
+
+  def startVpn(): Int = {
+
+    val builder = new Builder()
+    builder
+      .setSession(config.profileName)
+      .setMtu(VPN_MTU)
+      .addAddress(PRIVATE_VLAN.formatLocal(Locale.ENGLISH, "1"), 24)
+      .addDnsServer("8.8.8.8")
+
+    if (Utils.isLollipopOrAbove) {
+
+      builder.allowFamily(android.system.OsConstants.AF_INET6)
+
+      if (!config.isGlobalProxy) {
+        val apps = AppManager.getProxiedApps(this, config.proxiedAppString)
+        val pkgSet: mutable.HashSet[String] = new mutable.HashSet[String]
+        for (app <- apps) {
+          if (app.proxied) {
+            pkgSet.add(app.packageName)
+          }
+        }
+        for (pkg <- pkgSet) {
+          if (!config.isBypassApps) {
+            builder.addAllowedApplication(pkg)
+          } else {
+            builder.addDisallowedApplication(pkg)
+          }
+        }
+      }
+    }
+
+    if (config.route == Route.ALL) {
+      builder.addRoute("0.0.0.0", 0)
+    } else {
+      val privateList = getResources.getStringArray(R.array.bypass_private_route)
+      privateList.foreach(cidr => {
+        val addr = cidr.split('/')
+        builder.addRoute(addr(0), addr(1).toInt)
+      })
+    }
+
+    builder.addRoute("8.8.0.0", 16)
+
+    try {
+      conn = builder.establish()
+    } catch {
+      case ex: IllegalStateException =>
+        changeState(State.STOPPED, ex.getMessage)
+        conn = null
+      case ex: Exception => conn = null
+    }
+
+    if (conn == null) {
+      stopRunner()
+      return -1
+    }
+
+    val fd = conn.getFd
+
+    var cmd = (Path.BASE +
+      "tun2socks --netif-ipaddr %s "
+      + "--netif-netmask 255.255.255.0 "
+      + "--socks-server-addr 127.0.0.1:%d "
+      + "--tunfd %d "
+      + "--tunmtu %d "
+      + "--loglevel 3 "
+      + "--pid %stun2socks-vpn.pid")
+      .formatLocal(Locale.ENGLISH, PRIVATE_VLAN.formatLocal(Locale.ENGLISH, "2"), config.localPort, fd, VPN_MTU, Path.BASE)
+
+    if (config.isUdpDns)
+      cmd += " --enable-udprelay"
+    else
+      cmd += " --dnsgw %s:8153".formatLocal(Locale.ENGLISH, PRIVATE_VLAN.formatLocal(Locale.ENGLISH, "1"))
+
+    if (BuildConfig.DEBUG) Log.d(TAG, cmd)
+
+    Console.runCommand(cmd)
+
+    return fd
   }
 
   override def stopBackgroundService() {
@@ -501,6 +448,4 @@ class ShadowsocksVpnService extends VpnService with BaseService {
   override def getTag = TAG
 
   override def getServiceMode = Mode.VPN
-
-  override def getContext = getBaseContext
 }

src/main/scala/com/github/shadowsocks/ShadowsocksVpnThread.scala

@@ -0,0 +1,138 @@
+/*
+ * Shadowsocks - A shadowsocks client for Android
+ * Copyright (C) 2015 <max.c.lv@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ *                            ___====-_  _-====___
+ *                      _--^^^#####//      \\#####^^^--_
+ *                   _-^##########// (    ) \\##########^-_
+ *                  -############//  |\^^/|  \\############-
+ *                _/############//   (@::@)   \\############\_
+ *               /#############((     \\//     ))#############\
+ *              -###############\\    (oo)    //###############-
+ *             -#################\\  / VV \  //#################-
+ *            -###################\\/      \//###################-
+ *           _#/|##########/\######(   /\   )######/\##########|\#_
+ *           |/ |#/\#/\#/\/  \#/\##\  |  |  /##/\#/  \/\#/\#/\#| \|
+ *           `  |/  V  V  `   V  \#\| |  | |/#/  V   '  V  V  \|  '
+ *              `   `  `      `   / | |  | | \   '      '  '   '
+ *                               (  | |  | |  )
+ *                              __\ | |  | | /__
+ *                             (vvv(VVV)(VVV)vvv)
+ *
+ *                              HERE BE DRAGONS
+ *
+ */
+
+package com.github.shadowsocks
+
+import java.io.{File, FileDescriptor, IOException}
+import java.util.concurrent.Executors
+
+import android.net.{LocalServerSocket, LocalSocket, LocalSocketAddress}
+import android.util.Log
+
+class ShadowsocksVpnThread(vpnService: ShadowsocksVpnService) extends Thread {
+
+  val TAG = "ShadowsocksVpnService"
+  val PATH = "/data/data/com.github.shadowsocks/protect_path"
+
+  var isRunning: Boolean = true
+  var serverSocket: LocalServerSocket = null
+
+  def stopThread() {
+    isRunning = false
+    if (serverSocket != null) {
+      serverSocket.close()
+      serverSocket = null
+    }
+  }
+
+  override def run(): Unit = {
+
+    try {
+      new File(PATH).delete()
+    } catch {
+      case _: Exception => // ignore
+    }
+
+    try {
+      val localSocket = new LocalSocket
+
+      localSocket.bind(new LocalSocketAddress(PATH, LocalSocketAddress.Namespace.FILESYSTEM))
+      serverSocket = new LocalServerSocket(localSocket.getFileDescriptor)
+    } catch {
+      case e: IOException =>
+        Log.e(TAG, "unable to bind", e)
+        vpnService.stopBackgroundService()
+        return
+    }
+
+    val pool = Executors.newFixedThreadPool(4)
+
+    while (isRunning) {
+
+      try {
+        val socket = serverSocket.accept()
+
+        pool.execute(new Runnable {
+          override def run() {
+            try {
+              val input = socket.getInputStream
+              val output = socket.getOutputStream
+
+              input.read()
+
+              val fds = socket.getAncillaryFileDescriptors
+
+              if (fds.length > 0) {
+                var ret = false
+
+                val getInt = classOf[FileDescriptor].getDeclaredMethod("getInt$")
+                val fd = getInt.invoke(fds(0)).asInstanceOf[Int]
+                ret = vpnService.protect(fd)
+
+                // Trick to close file decriptor
+                System.jniclose(fd)
+
+                if (ret) {
+                  output.write(0)
+                } else {
+                  output.write(1)
+                }
+
+                input.close()
+                output.close()
+              }
+          } catch {
+            case e: Exception =>
+              Log.e(TAG, "Error when protect socket", e)
+          }
+
+          // close socket
+          try {
+            socket.close()
+          } catch {
+            case _: Exception => // ignore
+          }
+
+        }})
+      } catch {
+        case e: IOException => Log.e(TAG, "Error when accept socket", e)
+      }
+    }
+  }
+}