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# -*- coding: utf-8 -*-
from biplist import *
from biplist import PlistTrailer
from collections import namedtuple
from math import pow
import os
from struct import pack
from test_utils import *
import unittest
def trailerToString(trailer):
# Trailer is:
# 6 padding bytes
# 1 byte offsetSize
# 1 byte objectRefSize
# 8 bytes offsetCount (number of objects)
# 8 bytes topObjectNumber
# 8 bytes offsetTableOffset
# = 32 byte trailer
return pack('!xxxxxxBBQQQ', *trailer)
class TestInvalidPlistFile(unittest.TestCase):
def setUp(self):
pass
def testEmptyFile(self):
try:
readPlist(data_path('empty_file.plist'))
self.fail("Should not successfully read empty plist.")
except NotBinaryPlistException as e:
pass
except InvalidPlistException as e:
pass
def testTooShort(self):
try:
readPlistFromString(b"bplist0")
self.fail("Should not successfully read plist which is too short.")
except InvalidPlistException as e:
pass
def testInvalid(self):
try:
readPlistFromString(b"bplist0-------------------------------------")
self.fail("Should not successfully read invalid plist.")
except InvalidPlistException as e:
pass
def testInvalidTemplate(self):
# Test that our template plists for range tests are valid.
trailer = PlistTrailer(1, 1, 1, 0, 9)
contents = b''.join([b'bplist00', # header
b'\x08', # bool false
b'\x08', # object at offset 8
trailerToString(trailer)
])
result = readPlistFromString(contents)
self.assertEqual(result, False)
trailer = PlistTrailer(1, 1, 3, 0, 25)
contents = b''.join([b'bplist00bybiplist1.0', # header
b'\xA2', # array with two entries
b'\x01', # object entry 1
b'\x02', # object entry 2
b'\x09', # boolean false
b'\x08', # boolean true
b'\x14', # offset at 20
b'\x17', # offset at 23
b'\x18', # offset at 24
trailerToString(trailer)
])
result = readPlistFromString(contents)
self.assertEqual(result, [True, False])
def testInvalidOffsetSize(self):
# offset size can't be zero
try:
trailer = PlistTrailer(0, 1, 1, 0, 9)
contents = b''.join([b'bplist00', # header
b'\x08', # bool false
b'\x08', # object at offset 8
trailerToString(trailer)
])
readPlistFromString(contents)
self.fail("Offset size can't be zero")
except InvalidPlistException as e:
pass
# offset size can't be greater than 16
try:
trailer = PlistTrailer(17, 1, 1, 0, 9)
contents = b''.join([b'bplist00', # header
b'\x08', # bool false
b'\x08', # object at offset 8
trailerToString(trailer)
])
readPlistFromString(contents)
self.fail("Offset size can't be greater than 16")
except InvalidPlistException as e:
pass
def testInvalidOffsetOverflow(self):
# The offsets can't overflow the number of bytes used to represent them.
try:
c = readPlist(data_path('invalid_object_offset_size.plist'))
self.fail("Object offset size too small to reference all objects")
except InvalidPlistException as e:
pass
def testInvalidObjectRefSize(self):
# object reference size can't be zero
try:
trailer = PlistTrailer(1, 0, 1, 0, 9)
contents = b''.join([b'bplist00', # header
b'\x08', # bool false
b'\x08', # object at offset 8
trailerToString(trailer)
])
readPlistFromString(contents)
self.fail("Object reference size can't be zero")
except InvalidPlistException as e:
pass
def testInvalidObjectRefOverflow(self):
try:
readPlist(data_path('invalid_object_ref_size.plist'))
self.fail("Object ref size too small to reference all objects in the object table")
except InvalidPlistException as e:
pass
def testInvalidOffsestTableOffset(self):
# offsetTableOffset too large, extending into trailer
try:
trailer = PlistTrailer(1, 1, 1, 0, 10)
contents = b''.join([b'bplist00', # header
b'\x08', # bool false
b'\x08', # object at offset 8
trailerToString(trailer)
])
readPlistFromString(contents)
self.fail("Should not read plist when offsetTableOffset is too large")
except InvalidPlistException as e:
pass
# offsetTableOffset too small, extending into header or objects
try:
trailer = PlistTrailer(1, 1, 1, 0, 8)
contents = b''.join([b'bplist00', # header
b'\x08', # bool false
b'\x08', # object at offset 8
trailerToString(trailer)
])
readPlistFromString(contents)
self.fail("Should not read plist when offsetTableOffset is too small")
except InvalidPlistException as e:
pass
def testInvalidTopObjectNumber(self):
# topObjectNumber can't be greater than number of objects
try:
trailer = PlistTrailer(1, 1, 1, 1, 9)
contents = b''.join([b'bplist00', # header
b'\x08', # bool false
b'\x08', # object at offset 8
trailerToString(trailer)
])
readPlistFromString(contents)
self.fail("Top object number should not be greater than number of objects")
except InvalidPlistException as e:
pass
if __name__ == '__main__':
unittest.main()
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