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 |
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() |