Add rule support for ChinaDNS.

README.en.md

@@ -97,6 +97,18 @@ can use it somewhere else, like in other type of connections.
 Since Windows doesn't provide hook scripts for PPTP dialing, you have to run
 those manually before connecting and after disconnecting.
 
+ChinaDNS Usage
+----------
+
+The generated chnroute.txt file in this section is general-purpose for other
+OpenWRT application than ChinaDNS (such as [Shadowsocks-libev for OpenWrt]).
+
+### ChinaDNS (including other OpenWRT applications)
+
+* Download `chnroutes.py`.
+* `cd` into the download destination and run `python chnroutes.py -p chinadns`.
+This generate `chnroute.txt` file.
+
 Using this on a router
 ----------------------
 
@@ -131,4 +143,5 @@ write an issue.
 [APNIC Delegated List]:https://ftp.apnic.net/apnic/stats/apnic/delegated-apnic-latest
 [chinaip]:https://github.com/liudongmiao/chinaip
 [PR48]:https://github.com/fivesheep/chnroutes/pull/48
-[autoddvpn]:https://github.com/lincank/autoddvpn
+[autoddvpn]:https://github.com/lincank/autoddvpn
+[Shadowsocks-libev for OpenWrt]:https://github.com/shadowsocks/openwrt-shadowsocks

README.md

@@ -103,6 +103,17 @@ PPTP 用法
 
 如果机器上没有安装 Python, 可以直接从下载页面上下载已经预生成的 bat 文件。
 
+ChinaDNS 用法
+---------
+
+生成的chnroute.txt是OpenWRT大部分应用通用的（如[Shadowsocks-libev for OpenWrt]）。
+
+### ChinaDNS (包括其他 OpenWRT 应用)
+
+* 下载 `chnroutes.py`。
+* 从终端进入下载目录, 执行 `python chnroutes.py -p chinadns`, 执行之后会生成 `chnroute.txt`
+文件。
+
 在路由器上使用
 --------------
 
@@ -137,4 +148,5 @@ emule, BT 等 P2P 下载软件（P2P 流量不应穿过 VPN）。
 [APNIC Delegated List]:https://ftp.apnic.net/apnic/stats/apnic/delegated-apnic-latest
 [chinaip]:https://github.com/liudongmiao/chinaip
 [PR48]:https://github.com/fivesheep/chnroutes/pull/48
-[autoddvpn]:https://github.com/lincank/autoddvpn
+[autoddvpn]:https://github.com/lincank/autoddvpn
+[Shadowsocks-libev for OpenWrt]:https://github.com/shadowsocks/openwrt-shadowsocks

chnroutes.py

@@ -6,7 +6,9 @@
 import argparse
 import math
 import textwrap
+import ssl
 
+ssl._create_default_https_context = ssl._create_unverified_context
 
 def generate_ovpn(metric):
     results = fetch_ip_data()  
@@ -18,6 +20,15 @@ def generate_ovpn(metric):
     print "Usage: Append the content of the newly created routes.txt to your openvpn config file," \
           " and also add 'max-routes %d', which takes a line, to the head of the file." % (len(results)+20)
 
+def generate_chinadns(metric):
+    exchange_mask = lambda ipmask: sum(bin(int(i)).count('1') \
+	    for i in ipmask.split('.'))
+    results = fetch_ip_data()  
+    rfile=open('chnroute.txt','w')
+    for ip,mask,_ in results:
+        route_item="%s/%s\r\n"%(ip,exchange_mask(mask))
+        rfile.write(route_item)
+    rfile.close()
 
 def generate_linux(metric):
     results = fetch_ip_data()
@@ -195,8 +206,14 @@ def fetch_ip_data():
     #fetch data from apnic
     print "Fetching data from apnic.net, it might take a few minutes, please wait..."
     url=r'https://ftp.apnic.net/apnic/stats/apnic/delegated-apnic-latest'
-    data=urllib2.urlopen(url).read()
-
+    # data=urllib2.urlopen(url).read()
+    data=None
+    try:
+        # global data
+        data=urllib2.urlopen(url, timeout = 3).read()
+    except urllib2.URLError, e:
+        raise MyException("There was an error: %r" % e)
+        exit()
     cnregex=re.compile(r'apnic\|cn\|ipv4\|[0-9\.]+\|[0-9]+\|[0-9]+\|a.*',re.IGNORECASE)
     cndata=cnregex.findall(data)
 
@@ -245,7 +262,9 @@ def fetch_ip_data():
 
     args = parser.parse_args()
 
-    if args.platform.lower() == 'openvpn':
+    if args.platform.lower() == 'chinadns':
+        generate_chinadns(args.metric)
+    elif args.platform.lower() == 'openvpn':
         generate_ovpn(args.metric)
     elif args.platform.lower() == 'linux':
         generate_linux(args.metric)