Python文件完整性监控

Question

我编写了以下代码但无法使其正常工作，我看不出原因。代码：

1. 读取目标文件列表
2. 循环浏览目录
3. 在文件上运行MD5哈希
4. 检查activefile以查找所述文件的先前md5哈希值
5. 如果文件是新文件，则会将其记录为新文件
6. 如果日志已存在但已更改，则会写入更改并记录更改
7. 如果不是新的，没有变化，那么什么都不做

以下是代码：

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

你从来没有真正描述过这个问题，但一个可能的罪魁祸首是你永远不会关闭tempFile（或其他文件），所以最后的文件副本可能会失败。