系统管理员通常从svn/git中检索代码,部署站点后通常首先会生成该站点所有文件的MD5值,如果上线后网站页面内容被篡改(如挂马)等,可以比对之前生成MD5值快速查找去那些文件被更改,为了使系统管理员第一时间发现,可结合crontab或nagios等工具。
程序测试如下:
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# python check_change.py
Usage: python check_change.py update / home / wwwroot
python check_change.py check / home / wwwroot
# python check_change.py update /data/www #生成站点的md5值
# echo ' ' > /data/www/sitemap.html #测试清空文件
# rm -rf /data/www/sitemap.xml #测试删除文件
# python check_change.py check /data/www #查找那些文件被篡改
/ data / www / sitemap.xml
/ data / www / sitemap.html
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代码如下(check_change.py):
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#!/usr/bin/env python
import os,sys,subprocess
def update(path):
f = open ( file , 'w' )
for root,dirs,files in os.walk(path):
for name in files:
line = os.path.join(root, name)
(stdin,stderr) = subprocess.Popen([ 'md5sum' ,line],stdout = subprocess.PIPE).communicate()
f.write(stdin)
f.close()
def check(path):
f = open ( file , 'r' )
for line in f:
check_ok = """echo '%s' | md5sum -c > /dev/null 2>&1""" % line
#print check_ok
if not subprocess.call(check_ok, shell = True ) = = 0 :
abnormal = line.split()
print abnormal[ 1 ]
f.close()
def Usage():
print '''
Usage: python %s update /home/wwwroot
python %s check /home/wwwroot
''' % (sys.argv[ 0 ],sys.argv[ 0 ])
sys.exit()
if len (sys.argv) ! = 3 :
Usage()
file = 'file.key'
model = sys.argv[ 1 ]
path = sys.argv[ 2 ]
if os.path.exists(path) = = False :
print "\033[;31mThe directory or file does not exist\033[0m"
sys.exit()
elif model = = 'update' :
update(path)
elif model = = 'check' :
check(path)
else :
Usage()
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