Python 文件完整性监控

Question

我编写了以下代码，但无法正常工作，我不明白为什么。代码：

1. 读取目标文件列表
2. 遍历目录
3. 对文件运行 MD5 哈希
4. 检查活动文件以获取该文件以前的 md5 哈希
5. 如果文件是新文件，它会将其记录为新文件
6. 如果日志存在但已更改，它将写入更改并记录更改
7. 如果不是新的并且没有变化，那就什么都不做

代码如下：

import hashlib
import logging as log
import optparse
import os
import re
import sys
import glob
import shutil

def md5(fileName):
    """Compute md5 hash of the specified file"""
    try:
        fileHandle = open(fileName, "rb")
    except IOError:
        return
    m5Hash = hashlib.md5()
    while True:
        data = fileHandle.read(8192)
        if not data:
            break
        m5Hash.update(data)
    fileHandle.close()
    return m5Hash.hexdigest()

req = open("requested.txt")
for reqline in req:
    reqName = reqline[reqline.rfind('/') + 1:len(reqline) - 1]
    reqDir = reqline[0:reqline.rfind('/') + 1] 
    tempFile = open("activetemp.txt", 'w') 
    for name in glob.glob(reqDir + reqName):    
        fileHash = md5(name) 
        actInt = 0
        if fileHash != None:

            actFile = open("activefile.txt")

            for actLine in actFile:
                actNameDir = actLine[0:actLine.rfind(' : ')]
                actHash = actLine[actLine.rfind(' : ') + 3:len(actLine) -1]
                if actNameDir == name and actHash == fileHash:
                    tempFile.write(name + " : " + fileHash + "\n")
                    actInt = 1 
                    print fileHash
                    print actHash
                    print name
                    print actNameDir
                if actNameDir == name and actHash != fileHash:
                    fimlog = open("fimlog.txt", 'a')
                    tempFile.write(name + " : " + actHash + "\n")         
                    actInt = 1
                    fimlog.write("FIM Log: The file " + name +  " was modified: " + actHash + "\n") 
            if actInt == 0: 
                fimlog = open("fimlog.txt", 'a')
                fimlog.write("FIM Log: The file " + name +  " was created: " + fileHash + "\n")
                tempFile.write(name + " : " + fileHash + "\n")                       

shutil.copyfile("activetemp.txt", "activefile.txt")

Answer 1

您从未真正描述过问题，但一个可能的罪魁祸首是您从未关闭 tempFile（或与此相关的其他文件），因此最后的文件复制可能会失败。