mirror of
https://github.com/sqlmapproject/sqlmap.git
synced 2025-10-31 16:07:55 +03:00
101 lines
2.9 KiB
Python
101 lines
2.9 KiB
Python
#!/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 pickle
|
|
import tempfile
|
|
|
|
from lib.core.settings import BIGARRAY_CHUNK_LENGTH
|
|
|
|
class BigArray(list):
|
|
"""
|
|
List-like object used for storing large amounts of data (disk cached)
|
|
"""
|
|
|
|
def __init__(self):
|
|
self.chunks = [[]]
|
|
self.cache = None
|
|
self.length = 0
|
|
self.filenames = set()
|
|
|
|
def append(self, value):
|
|
self.chunks[-1].append(value)
|
|
if len(self.chunks[-1]) >= BIGARRAY_CHUNK_LENGTH:
|
|
filename = self._dump(self.chunks[-1])
|
|
del(self.chunks[-1][:])
|
|
self.chunks[-1] = filename
|
|
self.chunks.append([])
|
|
|
|
def pop(self):
|
|
if len(self.chunks[-1]) < 1:
|
|
self.chunks.pop()
|
|
with open(self.chunks[-1], 'rb') as fp:
|
|
self.chunks[-1] = pickle.load(fp)
|
|
return self.chunks[-1].pop()
|
|
|
|
def index(self, value):
|
|
for index in xrange(len(self)):
|
|
if self[index] == value:
|
|
return index
|
|
return ValueError, "%s is not in list" % value
|
|
|
|
def _dump(self, value):
|
|
handle, filename = tempfile.mkstemp()
|
|
self.filenames.add(filename)
|
|
os.close(handle)
|
|
with open(filename, 'w+b') as fp:
|
|
pickle.dump(value, fp)
|
|
return filename
|
|
|
|
def _checkcache(self, index):
|
|
if (self.cache and self.cache[0] != index and self.cache[2]):
|
|
filename = self._dump(self.cache[1])
|
|
self.chunks[self.cache[0]] = filename
|
|
if not (self.cache and self.cache[0] == index):
|
|
with open(self.chunks[index], 'rb') as fp:
|
|
self.cache = (index, pickle.load(fp), False)
|
|
|
|
def __getitem__(self, y):
|
|
index = y / BIGARRAY_CHUNK_LENGTH
|
|
offset = y % BIGARRAY_CHUNK_LENGTH
|
|
chunk = self.chunks[index]
|
|
if isinstance(chunk, list):
|
|
return chunk[offset]
|
|
else:
|
|
self._checkcache(index)
|
|
return self.cache[1][offset]
|
|
|
|
def __setitem__(self, y, value):
|
|
index = y / BIGARRAY_CHUNK_LENGTH
|
|
offset = y % BIGARRAY_CHUNK_LENGTH
|
|
chunk = self.chunks[index]
|
|
if isinstance(chunk, list):
|
|
chunk[offset] = value
|
|
else:
|
|
self._checkcache(index)
|
|
self.cache[1][offset] = value
|
|
self.cache[2] = True # dirty flag
|
|
|
|
def __repr__(self):
|
|
return "%s%s" % ("..." if len(self.chunks) > 1 else "", self.chunks[-1].__repr__())
|
|
|
|
def __iter__(self):
|
|
for i in xrange(len(self)):
|
|
yield self[i]
|
|
|
|
def __len__(self):
|
|
return len(self.chunks[-1]) if len(self.chunks) == 1 else (len(self.chunks) - 1) * BIGARRAY_CHUNK_LENGTH + len(self.chunks[-1])
|
|
|
|
def __del__(self):
|
|
for filename in self.filenames:
|
|
try:
|
|
os.remove(filename)
|
|
except OSError:
|
|
pass
|