From 1eecfb3dce2508b04278ad3a21e235e3ce256c44 Mon Sep 17 00:00:00 2001
From: Miroslav Stampar <miroslav.stampar@gmail.com>
Date: Mon, 23 Apr 2012 14:25:16 +0000
Subject: [PATCH] adding new file related to the last commit

---
 lib/core/purge.py | 74 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 lib/core/purge.py

diff --git a/lib/core/purge.py b/lib/core/purge.py
new file mode 100644
index 000000000..1ec9b7e84
--- /dev/null
+++ b/lib/core/purge.py
@@ -0,0 +1,74 @@
+#!/usr/bin/env python
+
+"""
+$Id$
+
+Copyright (c) 2006-2012 sqlmap developers (http://www.sqlmap.org/)
+See the file 'doc/COPYING' for copying permission
+"""
+
+import os
+import random
+import shutil
+import stat
+import string
+
+from lib.core.data import logger
+
+def purge(directory):
+    """
+    Safely removes content from a given directory
+    """
+
+    filepaths = []
+    dirpaths = []
+
+    for rootpath, directories, filenames in os.walk(directory):
+        dirpaths.extend([os.path.abspath(os.path.join(rootpath, _)) for _ in directories])
+        filepaths.extend([os.path.abspath(os.path.join(rootpath, _)) for _ in filenames])
+
+    logger.info("changing file attributes...")
+    for filepath in filepaths:
+        try:
+            os.chmod(filepath, stat.S_IREAD | stat.S_IWRITE)
+        except:
+            pass
+
+    logger.info("writing random data to files...")
+    for filepath in filepaths:
+        try:
+            filesize = os.path.getsize(filepath)
+            with open(filepath, 'w+b') as f:
+                f.write("".join(chr(random.randint(0, 255)) for _ in xrange(filesize)))
+        except:
+            pass
+
+    logger.info("truncating files...")
+    for filepath in filepaths:
+        try:
+            with open(filepath, 'w') as f:
+                pass
+        except:
+            pass
+
+    logger.info("renaming filenames to random values...")
+    for filepath in filepaths:
+        try:
+            os.rename(filepath, os.path.join(os.path.dirname(filepath), "".join(random.sample(string.letters, random.randint(4, 8)))))
+        except:
+            pass
+
+    dirpaths.sort(cmp = lambda x, y: y.count(os.path.sep) - x.count(os.path.sep))
+
+    logger.info("renaming directory names to random values...")
+    for dirpath in dirpaths:
+        try:
+            os.rename(dirpath, os.path.join(os.path.dirname(dirpath), "".join(random.sample(string.letters, random.randint(4, 8)))))
+        except:
+            pass
+
+    logger.info("deleting the whole directory tree...")
+    os.chdir(os.path.join(directory, ".."))
+    shutil.rmtree(directory)
+
+    logger.info("purging done")