diff --git a/net/cm/cm.py b/net/cm/cm.py
new file mode 100644
index 0000000..ea45993
--- /dev/null
+++ b/net/cm/cm.py
@@ -0,0 +1,137 @@
+#!/usr/bin/env python3
+import os
+import re
+import sys
+import io
+from subprocess import call, Popen, check_output
+import time
+
+__author__ = 'ty'
+
+from bs4 import BeautifulSoup
+from bs4 import Tag
+
+from cmfile import CMFile
+
+import requests
+import json
+
+
+def sha1_file(file_path):
+    import hashlib
+
+    sha = hashlib.sha1()
+    with open(file_path, 'rb') as f:
+        while True:
+            block = f.read(2 ** 10)  # Magic number: one-megabyte blocks.
+            if not block: break
+            sha.update(block)
+        return sha.hexdigest()
+
+
+try:
+    mode = sys.argv[1]
+except IndexError:
+    mode = "--download"
+
+url = "http://download.cyanogenmod.org"
+
+while True:
+
+    cmFiles_dict = {}
+    cmFiles = []
+    count = 0
+
+    download_dir = "/var/cyanogenmod/"
+
+    if os.path.exists("cm.json"):
+        with open('cm.json') as data_file:
+            data = json.load(data_file)
+            for d in data["cmFiles"]:
+                cmFile = CMFile()
+                cmFile.url = d["url"]
+                cmFile.sha1 = d["sha1"]
+                cmFiles.append(json.JSONDecoder().decode(cmFile.json()))
+                count += 1
+
+    r = requests.get(url, verify=False)
+
+    # print(r.text)
+
+    soup = BeautifulSoup(r.text)
+
+    if mode and (mode == "--list" or mode == "-l"):
+        td_list = soup.find_all('li', id=re.compile('device_.*'))
+
+        print("codename".ljust(20) + "fullname")
+
+        for td in td_list:
+            for content in td.contents[0].contents:
+                s = ""
+                if isinstance(content, Tag):
+                    device = content.text.rsplit(' ', 1)
+                    s = device[1].replace('(', '').replace(')', '')
+                    s = s.ljust(20) + device[0]
+                    print(s)
+    else:
+        link_list = soup.find_all('a', href=re.compile('/get/jenkins/.*'))
+        for link in link_list:
+            if isinstance(link, Tag):
+
+                cmFile = CMFile()
+                cmFile.url = url + link.get('href')
+
+                parent = link.parent
+                if isinstance(parent, Tag):
+                    sha1 = parent.find('small', class_='md5')
+                    sha1 = sha1.text.splitlines()[1].strip().replace('sha1: ', '')
+                    cmFile.sha1 = sha1
+                    s = json.JSONDecoder().decode(cmFile.json())
+                    if s in cmFiles:
+                        print("downloaded, skip")
+                    else:
+
+                        while int(check_output('ps -ef | grep /root/bypy/bypy.py |grep -v grep |wc -l', shell=True)) > 5:
+                            time.sleep(3)
+
+                        # download zip and recovery.img and check hash
+                        print(cmFile.url)
+
+                        index = cmFile.url.rfind('/')
+                        filename = cmFile.url[index + 1:]
+                        print(filename)
+
+                        device = ""
+                        if filename.endswith('.img'):
+                            device = filename.replace('-recovery.img', '')
+                        else:
+                            device = filename.replace('.zip', '')
+                        device = device[device.rfind('-') + 1:]
+                        print(device)
+
+                        out_file = "{}{}/{}".format(download_dir, device, filename)
+
+                        call("mkdir -p {}{}".format(download_dir, device), shell=True)
+
+                        call("wget --progress=dot:binary \"{}\" -O \"{}\"".format(cmFile.url, out_file), shell=True)
+                        if sha1_file(out_file) == cmFile.sha1:
+
+                            # upload file via bypy
+
+                            call("sha1sum {} > {}.sha1".format(out_file, out_file), shell=True)
+
+                            cmFiles.append(s)
+                            count += 1
+
+                            if filename.endswith('.img'):
+                                Popen("./cm.sh {}{}/{} {}".format(download_dir, device, filename, device), shell=True)
+                            else:
+                                Popen("./cm.sh {}{} {}".format(download_dir, device, device), shell=True)
+                        else:
+                            continue
+
+    cmFiles_dict["count"] = count
+    cmFiles_dict["cmFiles"] = cmFiles
+
+    with io.open('cm.json', 'w') as f:
+        json.dump(cmFiles_dict, f, ensure_ascii=False, sort_keys=True, indent=4, separators=(',', ': '))