mirror of
https://github.com/sqlmapproject/sqlmap.git
synced 2024-11-22 17:46:37 +03:00
102 lines
3.1 KiB
Python
102 lines
3.1 KiB
Python
#!/usr/bin/env python
|
|
|
|
"""
|
|
Copyright (c) 2006-2019 sqlmap developers (http://sqlmap.org/)
|
|
See the file 'LICENSE' for copying permission
|
|
"""
|
|
|
|
import binascii
|
|
import re
|
|
import string
|
|
import sys
|
|
|
|
if sys.version_info >= (3, 0):
|
|
xrange = range
|
|
text_type = str
|
|
string_types = (str,)
|
|
unichr = chr
|
|
else:
|
|
text_type = unicode
|
|
string_types = (basestring,)
|
|
|
|
# Regex used for recognition of hex encoded characters
|
|
HEX_ENCODED_CHAR_REGEX = r"(?P<result>\\x[0-9A-Fa-f]{2})"
|
|
|
|
# Raw chars that will be safe encoded to their slash (\) representations (e.g. newline to \n)
|
|
SAFE_ENCODE_SLASH_REPLACEMENTS = "\t\n\r\x0b\x0c"
|
|
|
|
# Characters that don't need to be safe encoded
|
|
SAFE_CHARS = "".join([_ for _ in string.printable.replace('\\', '') if _ not in SAFE_ENCODE_SLASH_REPLACEMENTS])
|
|
|
|
# Prefix used for hex encoded values
|
|
HEX_ENCODED_PREFIX = r"\x"
|
|
|
|
# Strings used for temporary marking of hex encoded prefixes (to prevent double encoding)
|
|
HEX_ENCODED_PREFIX_MARKER = "__HEX_ENCODED_PREFIX__"
|
|
|
|
# String used for temporary marking of slash characters
|
|
SLASH_MARKER = "__SLASH__"
|
|
|
|
def safecharencode(value):
|
|
"""
|
|
Returns safe representation of a given basestring value
|
|
|
|
>>> safecharencode(u'test123') == u'test123'
|
|
True
|
|
>>> safecharencode(u'test\x01\x02\xaf') == u'test\\\\x01\\\\x02\\xaf'
|
|
True
|
|
"""
|
|
|
|
retVal = value
|
|
|
|
if isinstance(value, string_types):
|
|
if any(_ not in SAFE_CHARS for _ in value):
|
|
retVal = retVal.replace(HEX_ENCODED_PREFIX, HEX_ENCODED_PREFIX_MARKER)
|
|
retVal = retVal.replace('\\', SLASH_MARKER)
|
|
|
|
for char in SAFE_ENCODE_SLASH_REPLACEMENTS:
|
|
retVal = retVal.replace(char, repr(char).strip('\''))
|
|
|
|
for char in set(retVal):
|
|
if not (char in string.printable or isinstance(value, text_type) and ord(char) >= 160):
|
|
retVal = retVal.replace(char, '\\x%02x' % ord(char))
|
|
|
|
retVal = retVal.replace(SLASH_MARKER, "\\\\")
|
|
retVal = retVal.replace(HEX_ENCODED_PREFIX_MARKER, HEX_ENCODED_PREFIX)
|
|
elif isinstance(value, list):
|
|
for i in xrange(len(value)):
|
|
retVal[i] = safecharencode(value[i])
|
|
|
|
return retVal
|
|
|
|
def safechardecode(value, binary=False):
|
|
"""
|
|
Reverse function to safecharencode
|
|
"""
|
|
|
|
retVal = value
|
|
if isinstance(value, string_types):
|
|
retVal = retVal.replace('\\\\', SLASH_MARKER)
|
|
|
|
while True:
|
|
match = re.search(HEX_ENCODED_CHAR_REGEX, retVal)
|
|
if match:
|
|
retVal = retVal.replace(match.group("result"), unichr(ord(binascii.unhexlify(match.group("result").lstrip("\\x")))))
|
|
else:
|
|
break
|
|
|
|
for char in SAFE_ENCODE_SLASH_REPLACEMENTS[::-1]:
|
|
retVal = retVal.replace(repr(char).strip('\''), char)
|
|
|
|
retVal = retVal.replace(SLASH_MARKER, '\\')
|
|
|
|
if binary:
|
|
if isinstance(retVal, text_type):
|
|
retVal = retVal.encode("utf8")
|
|
|
|
elif isinstance(value, (list, tuple)):
|
|
for i in xrange(len(value)):
|
|
retVal[i] = safechardecode(value[i])
|
|
|
|
return retVal
|