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#!/usr/bin/python
# -- Content-Encoding: UTF-8 --
"""
Provides functions for reading and writing (writing is WIP currently) Java
objects serialized or will be deserialized by ObjectOutputStream. This form of
object representation is a standard data interchange format in Java world.
javaobj module exposes an API familiar to users of the standard library
marshal, pickle and json modules.
See:
http://download.oracle.com/javase/6/docs/platform/serialization/spec/protocol.html
:authors: Volodymyr Buell, Thomas Calmant
:license: Apache License 2.0
:version: 0.2.3
:status: Alpha
..
Copyright 2016 Thomas Calmant
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
"""
# Standard library
import
collections
import
logging
import
os
import
struct
import
sys
try
:
# Python 2
from
StringIO
import
StringIO
as
BytesIO
except
ImportError
:
# Python 3+
from
io
import
BytesIO
# ------------------------------------------------------------------------------
# Module version
__version_info__
=
(
0
,
2
,
3
)
__version__
=
"."
.
join
(
str
(
x
)
for
x
in
__version_info__
)
# Documentation strings format
__docformat__
=
"restructuredtext en"
# ------------------------------------------------------------------------------
# Setup the logger
_log
=
logging
.
getLogger
(
__name__
)
def
log_debug
(
message
,
ident
=
0
):
"""
Logs a message at debug level
:param message: Message to log
:param ident: Number of indentation spaces
"""
_log
.
debug
(
" "
*
(
ident
*
2
)
+
str
(
message
))
def
log_error
(
message
,
ident
=
0
):
"""
Logs a message at error level
:param message: Message to log
:param ident: Number of indentation spaces
"""
_log
.
error
(
" "
*
(
ident
*
2
)
+
str
(
message
))
# ------------------------------------------------------------------------------
if
sys
.
version_info
[
0
]
>=
3
:
# Python 3 interpreter : bytes & str
def
to_bytes
(
data
,
encoding
=
"UTF-8"
):
"""
Converts the given string to an array of bytes.
Returns the first parameter if it is already an array of bytes.
:param data: A unicode string
:param encoding: The encoding of data
:return: The corresponding array of bytes
"""
if
type
(
data
)
is
bytes
:
# Nothing to do
return
data
return
data
.
encode
(
encoding
)
def
to_str
(
data
,
encoding
=
"UTF-8"
):
"""
Converts the given parameter to a string.
Returns the first parameter if it is already an instance of ``str``.
:param data: A string
:param encoding: The encoding of data
:return: The corresponding string
"""
if
type
(
data
)
is
str
:
# Nothing to do
return
data
return
str
(
data
,
encoding
)
def
read_to_str
(
data
):
"""
Concats all bytes into a string
"""
return
''
.
join
(
chr
(
char
)
for
char
in
data
)
else
:
# Python 2 interpreter : str & unicode
def
to_str
(
data
,
encoding
=
"UTF-8"
):
"""
Converts the given parameter to a string.
Returns the first parameter if it is already an instance of ``str``.
:param data: A string
:param encoding: The encoding of data
:return: The corresponding string
"""
if
type
(
data
)
is
str
:
# Nothing to do
return
data
return
data
.
encode
(
encoding
)
# Same operation
to_bytes
=
to_str
def
read_to_str
(
data
):
"""
Nothing to do in Python 2
"""
return
data
# ------------------------------------------------------------------------------
def
load
(
file_object
,
*
transformers
,
**
kwargs
):
"""
Deserializes Java primitive data and objects serialized using
ObjectOutputStream from a file-like object.
:param file_object: A file-like object
:param transformers: Custom transformers to use
:param ignore_remaining_data: If True, don't log an error when unused
trailing bytes are remaining
:return: The deserialized object
"""
# Read keyword argument
ignore_remaining_data
=
kwargs
.
get
(
'ignore_remaining_data'
,
False
)
marshaller
=
JavaObjectUnmarshaller
(
file_object
,
kwargs
.
get
(
'use_numpy_arrays'
,
False
))
# Add custom transformers first
for
transformer
in
transformers
:
marshaller
.
add_transformer
(
transformer
)
marshaller
.
add_transformer
(
DefaultObjectTransformer
())
# Read the file object
return
marshaller
.
readObject
(
ignore_remaining_data
=
ignore_remaining_data
)
def
loads
(
string
,
*
transformers
,
**
kwargs
):
"""
Deserializes Java objects and primitive data serialized using
ObjectOutputStream from a string.
:param string: A Java data string
:param transformers: Custom transformers to use
:param ignore_remaining_data: If True, don't log an error when unused
trailing bytes are remaining
:return: The deserialized object
"""
# Read keyword argument
ignore_remaining_data
=
kwargs
.
get
(
'ignore_remaining_data'
,
False
)
# Reuse the load method (avoid code duplication)
return
load
(
BytesIO
(
string
),
*
transformers
,
ignore_remaining_data
=
ignore_remaining_data
)
def
dumps
(
obj
,
*
transformers
):
"""
Serializes Java primitive data and objects unmarshaled by load(s) before
into string.
:param obj: A Python primitive object, or one loaded using load(s)
:param transformers: Custom transformers to use
:return: The serialized data as a string
"""
marshaller
=
JavaObjectMarshaller
()
# Add custom transformers
for
transformer
in
transformers
:
marshaller
.
add_transformer
(
transformer
)
return
marshaller
.
dump
(
obj
)
# ------------------------------------------------------------------------------
class
JavaClass
(
object
):
"""
Represents a class in the Java world
"""
def
__init__
(
self
):
"""
Sets up members
"""
self
.
name
=
None
self
.
serialVersionUID
=
None
self
.
flags
=
None
self
.
fields_names
=
[]
self
.
fields_types
=
[]
self
.
superclass
=
None
def
__str__
(
self
):
"""
String representation of the Java class
"""
return
self
.
__repr__
()
def
__repr__
(
self
):
"""
String representation of the Java class
"""
return
"[{0:s}:0x{1:X}]"
.
format
(
self
.
name
,
self
.
serialVersionUID
)
def
__eq__
(
self
,
other
):
"""
Equality test between two Java classes
:param other: Other JavaClass to test
:return: True if both classes share the same fields and name
"""
if
not
isinstance
(
other
,
type
(
self
)):
return
False
return
(
self
.
name
==
other
.
name
and
self
.
serialVersionUID
==
other
.
serialVersionUID
and
self
.
flags
==
other
.
flags
and
self
.
fields_names
==
other
.
fields_names
and
self
.
fields_types
==
other
.
fields_types
and
self
.
superclass
==
other
.
superclass
)
class
JavaObject
(
object
):
"""
Represents a deserialized non-primitive Java object
"""
def
__init__
(
self
):
"""
Sets up members
"""
self
.
classdesc
=
None
self
.
annotations
=
[]
def
get_class
(
self
):
"""
Returns the JavaClass that defines the type of this object
"""
return
self
.
classdesc
def
__str__
(
self
):
"""
String representation
"""
return
self
.
__repr__
()
def
__repr__
(
self
):
"""
String representation
"""
name
=
"UNKNOWN"
if
self
.
classdesc
:
name
=
self
.
classdesc
.
name
return
"<javaobj:{0}>"
.
format
(
name
)
def
__eq__
(
self
,
other
):
"""
Equality test between two Java classes
:param other: Other JavaClass to test
:return: True if both classes share the same fields and name
"""
if
not
isinstance
(
other
,
type
(
self
)):
return
False
res
=
(
self
.
classdesc
==
other
.
classdesc
and
self
.
annotations
==
other
.
annotations
)
if
not
res
:
return
False
for
name
in
self
.
classdesc
.
fields_names
:
if
not
getattr
(
self
,
name
)
==
getattr
(
other
,
name
):
return
False
return
True
class
JavaString
(
str
):
"""
Represents a Java String
"""
def
__hash__
(
self
):
return
str
.
__hash__
(
self
)
def
__eq__
(
self
,
other
):
if
not
isinstance
(
other
,
str
):
return
False
return
str
.
__eq__
(
self
,
other
)
class
JavaEnum
(
JavaObject
):
"""
Represents a Java enumeration
"""
def
__init__
(
self
,
constant
=
None
):
super
(
JavaEnum
,
self
).
__init__
()
self
.
constant
=
constant
class
JavaArray
(
list
,
JavaObject
):
"""
Represents a Java Array
"""
def
__init__
(
self
,
classdesc
=
None
):
list
.
__init__
(
self
)
JavaObject
.
__init__
(
self
)
self
.
classdesc
=
classdesc
class
JavaByteArray
(
JavaObject
):
"""
Represents the special case of Java Array which contains bytes
"""
def
__init__
(
self
,
data
,
classdesc
=
None
):
JavaObject
.
__init__
(
self
)
self
.
_data
=
struct
.
unpack
(
"b"
*
len
(
data
),
data
)
self
.
classdesc
=
classdesc
def
__str__
(
self
):
return
"JavaByteArray({0})"
.
format
(
self
.
_data
)
def
__getitem__
(
self
,
item
):
return
self
.
_data
[
item
]
def
__iter__
(
self
):
return
iter
(
self
.
_data
)
def
__len__
(
self
):
return
len
(
self
.
_data
)
# ------------------------------------------------------------------------------
class
JavaObjectConstants
(
object
):
"""
Defines the constants of the Java serialization format
"""
STREAM_MAGIC
=
0xaced
STREAM_VERSION
=
0x05
TC_NULL
=
0x70
TC_REFERENCE
=
0x71
TC_CLASSDESC
=
0x72
TC_OBJECT
=
0x73
TC_STRING
=
0x74
TC_ARRAY
=
0x75
TC_CLASS
=
0x76
TC_BLOCKDATA
=
0x77
TC_ENDBLOCKDATA
=
0x78
TC_RESET
=
0x79
TC_BLOCKDATALONG
=
0x7A
TC_EXCEPTION
=
0x7B
TC_LONGSTRING
=
0x7C
TC_PROXYCLASSDESC
=
0x7D
TC_ENUM
=
0x7E
# Ignore TC_MAX: we don't use it and it messes with TC_ENUM
# TC_MAX = 0x7E
# classDescFlags
SC_WRITE_METHOD
=
0x01
# if SC_SERIALIZABLE
SC_BLOCK_DATA
=
0x08
# if SC_EXTERNALIZABLE
SC_SERIALIZABLE
=
0x02
SC_EXTERNALIZABLE
=
0x04
SC_ENUM
=
0x10
# type definition chars (typecode)
TYPE_BYTE
=
'B'
# 0x42
TYPE_CHAR
=
'C'
# 0x43
TYPE_DOUBLE
=
'D'
# 0x44
TYPE_FLOAT
=
'F'
# 0x46
TYPE_INTEGER
=
'I'
# 0x49
TYPE_LONG
=
'J'
# 0x4A
TYPE_SHORT
=
'S'
# 0x53
TYPE_BOOLEAN
=
'Z'
# 0x5A
TYPE_OBJECT
=
'L'
# 0x4C
TYPE_ARRAY
=
'['
# 0x5B
# list of supported typecodes listed above
TYPECODES_LIST
=
[
# primitive types
TYPE_BYTE
,
TYPE_CHAR
,
TYPE_DOUBLE
,
TYPE_FLOAT
,
TYPE_INTEGER
,
TYPE_LONG
,
TYPE_SHORT
,
TYPE_BOOLEAN
,
# object types
TYPE_OBJECT
,
TYPE_ARRAY
]
BASE_REFERENCE_IDX
=
0x7E0000
NUMPY_TYPE_MAP
=
{
TYPE_BYTE
:
'B'
,
TYPE_CHAR
:
'b'
,
TYPE_DOUBLE
:
'>d'
,
TYPE_FLOAT
:
'>f'
,
TYPE_INTEGER
:
'>i'
,
TYPE_LONG
:
'>l'
,
TYPE_SHORT
:
'>h'
,
TYPE_BOOLEAN
:
'>B'
}
class
OpCodeDebug
(
object
):
"""
OP Codes definition and utility methods
"""
# Type codes
OP_CODE
=
dict
((
getattr
(
JavaObjectConstants
,
key
),
key
)
for
key
in
dir
(
JavaObjectConstants
)
if
key
.
startswith
(
"TC_"
))
TYPE
=
dict
((
getattr
(
JavaObjectConstants
,
key
),
key
)
for
key
in
dir
(
JavaObjectConstants
)
if
key
.
startswith
(
"TYPE_"
))
STREAM_CONSTANT
=
dict
((
getattr
(
JavaObjectConstants
,
key
),
key
)
for
key
in
dir
(
JavaObjectConstants
)
if
key
.
startswith
(
"SC_"
))
@
staticmethod
def
op_id
(
op_id
):
"""
Returns the name of the given OP Code
:param op_id: OP Code
:return: Name of the OP Code
"""
return
OpCodeDebug
.
OP_CODE
.
get
(
op_id
,
"<unknown OP:{0}>"
.
format
(
op_id
))
@
staticmethod
def
type_code
(
type_id
):
"""
Returns the name of the given Type Code
:param type_id: Type code
:return: Name of the type code
"""
return
OpCodeDebug
.
TYPE
.
get
(
type_id
,
"<unknown Type:{0}>"
.
format
(
type_id
))
@
staticmethod
def
flags
(
flags
):
"""
Returns the names of the class description flags found in the given
integer
:param flags: A class description flag entry
:return: The flags names as a single string
"""
names
=
sorted
(
descr
for
key
,
descr
in
OpCodeDebug
.
STREAM_CONSTANT
.
items
()
if
key
&
flags
)
return
', '
.
join
(
names
)
# ------------------------------------------------------------------------------
class
JavaObjectUnmarshaller
(
JavaObjectConstants
):
"""
Deserializes a Java serialization stream
"""
def
__init__
(
self
,
stream
,
use_numpy_arrays
=
False
):
"""
Sets up members
:param stream: An input stream (opened in binary/bytes mode)
:raise IOError: Invalid input stream
"""
self
.
use_numpy_arrays
=
use_numpy_arrays
# Check stream
if
stream
is
None
:
raise
IOError
(
"No input stream given"
)
# Prepare the association Terminal Symbol -> Reading method
self
.
opmap
=
{
self
.
TC_NULL
:
self
.
do_null
,
self
.
TC_CLASSDESC
:
self
.
do_classdesc
,
self
.
TC_OBJECT
:
self
.
do_object
,
self
.
TC_STRING
:
self
.
do_string
,
self
.
TC_LONGSTRING
:
self
.
do_string_long
,
self
.
TC_ARRAY
:
self
.
do_array
,
self
.
TC_CLASS
:
self
.
do_class
,
self
.
TC_BLOCKDATA
:
self
.
do_blockdata
,
self
.
TC_BLOCKDATALONG
:
self
.
do_blockdata_long
,
self
.
TC_REFERENCE
:
self
.
do_reference
,
self
.
TC_ENUM
:
self
.
do_enum
,
# note that we are reusing do_null:
self
.
TC_ENDBLOCKDATA
:
self
.
do_null
,
}
# Set up members
self
.
current_object
=
None
self
.
reference_counter
=
0
self
.
references
=
[]
self
.
object_transformers
=
[]
self
.
object_stream
=
stream
# Read the stream header (magic & version)
self
.
_readStreamHeader
()
def
readObject
(
self
,
ignore_remaining_data
=
False
):
"""
Reads an object from the input stream
:param ignore_remaining_data: If True, don't log an error when
unused trailing bytes are remaining
:return: The unmarshalled object
:raise Exception: Any exception that occurred during unmarshalling
"""
try
:
# TODO: add expects
_
,
res
=
self
.
_read_and_exec_opcode
(
ident
=
0
)
position_bak
=
self
.
object_stream
.
tell
()
the_rest
=
self
.
object_stream
.
read
()
if
not
ignore_remaining_data
and
len
(
the_rest
):
log_error
(
"Warning!!!!: Stream still has {0} bytes left. "
"Enable debug mode of logging to see the hexdump."
.
format
(
len
(
the_rest
)))
log_debug
(
"
\n
{0}"
.
format
(
self
.
_create_hexdump
(
the_rest
)))
else
:
log_debug
(
"Java Object unmarshalled successfully!"
)
self
.
object_stream
.
seek
(
position_bak
)
return
res
except
Exception
:
self
.
_oops_dump_state
(
ignore_remaining_data
)
raise
def
add_transformer
(
self
,
transformer
):
"""
Appends an object transformer to the deserialization process
:param transformer: An object with a transform(obj) method
"""
self
.
object_transformers
.
append
(
transformer
)
def
_readStreamHeader
(
self
):
"""
Reads the magic header of a Java serialization stream
:raise IOError: Invalid magic header (not a Java stream)
"""
(
magic
,
version
)
=
self
.
_readStruct
(
">HH"
)
if
magic
!=
self
.
STREAM_MAGIC
or
version
!=
self
.
STREAM_VERSION
:
raise
IOError
(
"The stream is not java serialized object. "
"Invalid stream header: {0:04X}{1:04X}"
.
format
(
magic
,
version
))
def
_read_and_exec_opcode
(
self
,
ident
=
0
,
expect
=
None
):
"""
Reads the next opcode, and executes its handler
:param ident: Log identation level
:param expect: A list of expected opcodes
:return: A tuple: (opcode, result of the handler)
:raise IOError: Read opcode is not one of the expected ones
:raise RuntimeError: Unknown opcode
"""
position
=
self
.
object_stream
.
tell
()
(
opid
,)
=
self
.
_readStruct
(
">B"
)
log_debug
(
"OpCode: 0x{0:X} -- {1} (at offset 0x{2:X})"
.
format
(
opid
,
OpCodeDebug
.
op_id
(
opid
),
position
),
ident
)
if
expect
and
opid
not
in
expect
:
raise
IOError
(
"Unexpected opcode 0x{0:X} -- {1} (at offset 0x{2:X})"
.
format
(
opid
,
OpCodeDebug
.
op_id
(
opid
),
position
))
try
:
handler
=
self
.
opmap
[
opid
]
except
KeyError
:
raise
RuntimeError
(
"Unknown OpCode in the stream: 0x{0:X} (at offset 0x{1:X})"
.
format
(
opid
,
position
))
else
:
return
opid
,
handler
(
ident
=
ident
)
def
_readStruct
(
self
,
unpack
):
"""
Reads from the input stream, using struct
:param unpack: An unpack format string
:return: The result of struct.unpack (tuple)
:raise RuntimeError: End of stream reached during unpacking
"""
length
=
struct
.
calcsize
(
unpack
)
ba
=
self
.
object_stream
.
read
(
length
)
if
len
(
ba
)
!=
length
:
raise
RuntimeError
(
"Stream has been ended unexpectedly while "
"unmarshaling."
)
return
struct
.
unpack
(
unpack
,
ba
)
def
_readString
(
self
,
length_fmt
=
"H"
):
"""
Reads a serialized string
:param length_fmt: Structure format of the string length (H or Q)
:return: The deserialized string
:raise RuntimeError: Unexpected end of stream
"""
(
length
,)
=
self
.
_readStruct
(
">{0}"
.
format
(
length_fmt
))
ba
=
self
.
object_stream
.
read
(
length
)
return
to_str
(
ba
)
def
do_classdesc
(
self
,
parent
=
None
,
ident
=
0
):
"""
Handles a TC_CLASSDESC opcode
:param parent:
:param ident: Log indentation level
:return: A JavaClass object
"""
# TC_CLASSDESC className serialVersionUID newHandle classDescInfo
# classDescInfo:
# classDescFlags fields classAnnotation superClassDesc
# classDescFlags:
# (byte) // Defined in Terminal Symbols and Constants
# fields:
# (short)<count> fieldDesc[count]
# fieldDesc:
# primitiveDesc
# objectDesc
# primitiveDesc:
# prim_typecode fieldName
# objectDesc:
# obj_typecode fieldName className1
clazz
=
JavaClass
()
log_debug
(
"[classdesc]"
,
ident
)
class_name
=
self
.
_readString
()
clazz
.
name
=
class_name
log_debug
(
"Class name: %s"
%
class_name
,
ident
)
# serialVersionUID is a Java (signed) long => 8 bytes
serialVersionUID
,
classDescFlags
=
self
.
_readStruct
(
">qB"
)
clazz
.
serialVersionUID
=
serialVersionUID
clazz
.
flags
=
classDescFlags
self
.
_add_reference
(
clazz
,
ident
)
log_debug
(
"Serial: 0x{0:X} / {0:d} - classDescFlags: 0x{1:X} {2}"
.
format
(
serialVersionUID
,
classDescFlags
,
OpCodeDebug
.
flags
(
classDescFlags
)),
ident
)
(
length
,)
=
self
.
_readStruct
(
">H"
)
log_debug
(
"Fields num: 0x{0:X}"
.
format
(
length
),
ident
)
clazz
.
fields_names
=
[]
clazz
.
fields_types
=
[]
for
fieldId
in
range
(
length
):
(
typecode
,)
=
self
.
_readStruct
(
">B"
)
field_name
=
self
.
_readString
()
field_type
=
self
.
_convert_char_to_type
(
typecode
)
log_debug
(
"> Reading field {0}"
.
format
(
field_name
),
ident
)
if
field_type
==
self
.
TYPE_ARRAY
:
_
,
field_type
=
self
.
_read_and_exec_opcode
(
ident
=
ident
+
1
,
expect
=
(
self
.
TC_STRING
,
self
.
TC_REFERENCE
))
if
type
(
field_type
)
is
not
JavaString
:
raise
AssertionError
(
"Field type must be a JavaString, "
"not {0}"
.
format
(
type
(
field_type
)))
elif
field_type
==
self
.
TYPE_OBJECT
:
_
,
field_type
=
self
.
_read_and_exec_opcode
(
ident
=
ident
+
1
,
expect
=
(
self
.
TC_STRING
,
self
.
TC_REFERENCE
))
if
type
(
field_type
)
is
JavaClass
:
# FIXME: ugly trick
field_type
=
JavaString
(
field_type
.
name
)
if
type
(
field_type
)
is
not
JavaString
:
raise
AssertionError
(
"Field type must be a JavaString, "
"not {0}"
.
format
(
type
(
field_type
)))
log_debug
(
"< FieldName: 0x{0:X} Name:{1} Type:{2} ID:{3}"
.
format
(
typecode
,
field_name
,
field_type
,
fieldId
),
ident
)
assert
field_name
is
not
None
assert
field_type
is
not
None
clazz
.
fields_names
.
append
(
field_name
)
clazz
.
fields_types
.
append
(
field_type
)
if
parent
:
parent
.
__fields
=
clazz
.
fields_names
parent
.
__types
=
clazz
.
fields_types
# classAnnotation
(
opid
,)
=
self
.
_readStruct
(
">B"
)
log_debug
(
"OpCode: 0x{0:X} -- {1} (classAnnotation)"
.
format
(
opid
,
OpCodeDebug
.
op_id
(
opid
)),
ident
)
if
opid
!=
self
.
TC_ENDBLOCKDATA
:
raise
NotImplementedError
(
"classAnnotation isn't implemented yet"
)
# superClassDesc
log_debug
(
"Reading Super Class of {0}"
.
format
(
clazz
.
name
),
ident
)
_
,
superclassdesc
=
self
.
_read_and_exec_opcode
(
ident
=
ident
+
1
,
expect
=
(
self
.
TC_CLASSDESC
,
self
.
TC_NULL
,
self
.
TC_REFERENCE
))
log_debug
(
"Super Class for {0}: {1}"
.
format
(
clazz
.
name
,
str
(
superclassdesc
)),
ident
)
clazz
.
superclass
=
superclassdesc
return
clazz
def
do_blockdata
(
self
,
parent
=
None
,
ident
=
0
):
"""
Handles TC_BLOCKDATA opcode
:param parent:
:param ident: Log indentation level
:return: A string containing the block data
"""
# TC_BLOCKDATA (unsigned byte)<size> (byte)[size]
log_debug
(
"[blockdata]"
,
ident
)
(
length
,)
=
self
.
_readStruct
(
">B"
)
ba
=
self
.
object_stream
.
read
(
length
)
# Ensure we have an str
return
read_to_str
(
ba
)
def
do_blockdata_long
(
self
,
parent
=
None
,
ident
=
0
):
"""
Handles TC_BLOCKDATALONG opcode
:param parent:
:param ident: Log indentation level
:return: A string containing the block data
"""
# TC_BLOCKDATALONG (int)<size> (byte)[size]
log_debug
(
"[blockdatalong]"
,
ident
)
(
length
,)
=
self
.
_readStruct
(
">I"
)
ba
=
self
.
object_stream
.
read
(
length
)
# Ensure we have an str
return
read_to_str
(
ba
)
def
do_class
(
self
,
parent
=
None
,
ident
=
0
):
"""
Handles TC_CLASS opcode
:param parent:
:param ident: Log indentation level
:return: A JavaClass object
"""
# TC_CLASS classDesc newHandle
log_debug
(
"[class]"
,
ident
)
# TODO: what to do with "(ClassDesc)prevObject".
# (see 3rd line for classDesc:)
_
,
classdesc
=
self
.
_read_and_exec_opcode
(
ident
=
ident
+
1
,
expect
=
(
self
.
TC_CLASSDESC
,
self
.
TC_PROXYCLASSDESC
,
self
.
TC_NULL
,
self
.
TC_REFERENCE
))
log_debug
(
"Classdesc: {0}"
.
format
(
classdesc
),
ident
)
self
.
_add_reference
(
classdesc
,
ident
)
return
classdesc
def
do_object
(
self
,
parent
=
None
,
ident
=
0
):
"""
Handles a TC_OBJECT opcode
:param parent:
:param ident: Log indentation level
:return: A JavaClass object
"""
# TC_OBJECT classDesc newHandle classdata[] // data for each class
java_object
=
JavaObject
()
log_debug
(
"[object]"
,
ident
)
log_debug
(
"java_object.annotations just after instantiation: {0}"
.
format
(
java_object
.
annotations
),
ident
)
# TODO: what to do with "(ClassDesc)prevObject".
# (see 3rd line for classDesc:)
opcode
,
classdesc
=
self
.
_read_and_exec_opcode
(
ident
=
ident
+
1
,
expect
=
(
self
.
TC_CLASSDESC
,
self
.
TC_PROXYCLASSDESC
,
self
.
TC_NULL
,
self
.
TC_REFERENCE
))
# self.TC_REFERENCE hasn't shown in spec, but actually is here
# Create object
for
transformer
in
self
.
object_transformers
:
java_object
=
transformer
.
create
(
classdesc
,
self
)
if
java_object
is
not
None
:
break
# Store classdesc of this object
java_object
.
classdesc
=
classdesc
# Store the reference
self
.
_add_reference
(
java_object
,
ident
)
# classdata[]
if
classdesc
.
flags
&
self
.
SC_EXTERNALIZABLE
\
and
not
classdesc
.
flags
&
self
.
SC_BLOCK_DATA
:
# TODO:
raise
NotImplementedError
(
"externalContents isn't implemented yet"
)
if
classdesc
.
flags
&
self
.
SC_SERIALIZABLE
:
# TODO: look at ObjectInputStream.readSerialData()
# FIXME: Handle the SC_WRITE_METHOD flag
# create megalist
tempclass
=
classdesc
megalist
=
[]
megatypes
=
[]
log_debug
(
"Constructing class..."
,
ident
)
while
tempclass
:
log_debug
(
"Class: {0}"
.
format
(
tempclass
.
name
),
ident
+
1
)
class_fields_str
=
' - '
.
join
(
' '
.
join
((
field_type
,
field_name
))
for
field_type
,
field_name
in
zip
(
tempclass
.
fields_types
,
tempclass
.
fields_names
))
if
class_fields_str
:
log_debug
(
class_fields_str
,
ident
+
2
)
fieldscopy
=
tempclass
.
fields_names
[:]
fieldscopy
.
extend
(
megalist
)
megalist
=
fieldscopy
fieldscopy
=
tempclass
.
fields_types
[:]
fieldscopy
.
extend
(
megatypes
)
megatypes
=
fieldscopy
tempclass
=
tempclass
.
superclass
log_debug
(
"Values count: {0}"
.
format
(
len
(
megalist
)),
ident
)
log_debug
(
"Prepared list of values: {0}"
.
format
(
megalist
),
ident
)
log_debug
(
"Prepared list of types: {0}"
.
format
(
megatypes
),
ident
)
for
field_name
,
field_type
in
zip
(
megalist
,
megatypes
):
log_debug
(
"Reading field: {0} - {1}"
.
format
(
field_type
,
field_name
))
res
=
self
.
_read_value
(
field_type
,
ident
,
name
=
field_name
)
java_object
.
__setattr__
(
field_name
,
res
)
if
classdesc
.
flags
&
self
.
SC_SERIALIZABLE
\
and
classdesc
.
flags
&
self
.
SC_WRITE_METHOD
\
or
classdesc
.
flags
&
self
.
SC_EXTERNALIZABLE
\
and
classdesc
.
flags
&
self
.
SC_BLOCK_DATA
:
# objectAnnotation
log_debug
(
"java_object.annotations before: {0}"
.
format
(
java_object
.
annotations
),
ident
)
while
opcode
!=
self
.
TC_ENDBLOCKDATA
:
opcode
,
obj
=
self
.
_read_and_exec_opcode
(
ident
=
ident
+
1
)
# , expect=[self.TC_ENDBLOCKDATA, self.TC_BLOCKDATA,
# self.TC_OBJECT, self.TC_NULL, self.TC_REFERENCE])
if
opcode
!=
self
.
TC_ENDBLOCKDATA
:
java_object
.
annotations
.
append
(
obj
)
log_debug
(
"objectAnnotation value: {0}"
.
format
(
obj
),
ident
)
log_debug
(
"java_object.annotations after: {0}"
.
format
(
java_object
.
annotations
),
ident
)
# Allow extra loading operations
if
hasattr
(
java_object
,
"__extra_loading__"
):
log_debug
(
"Java object has extra loading capability."
)
java_object
.
__extra_loading__
(
self
,
ident
)
log_debug
(
">>> java_object: {0}"
.
format
(
java_object
),
ident
)
return
java_object
def
do_string
(
self
,
parent
=
None
,
ident
=
0
):
"""
Handles a TC_STRING opcode
:param parent:
:param ident: Log indentation level
:return: A string
"""
log_debug
(
"[string]"
,
ident
)
ba
=
JavaString
(
self
.
_readString
())
self
.
_add_reference
(
ba
,
ident
)
return
ba
def
do_string_long
(
self
,
parent
=
None
,
ident
=
0
):
"""
Handles a TC_LONGSTRING opcode
:param parent:
:param ident: Log indentation level
:return: A string
"""
log_debug
(
"[long string]"
,
ident
)
ba
=
JavaString
(
self
.
_readString
(
"Q"
))
self
.
_add_reference
(
ba
,
ident
)
return
ba
def
do_array
(
self
,
parent
=
None
,
ident
=
0
):
"""
Handles a TC_ARRAY opcode
:param parent:
:param ident: Log indentation level
:return: A list of deserialized objects
"""
# TC_ARRAY classDesc newHandle (int)<size> values[size]
log_debug
(
"[array]"
,
ident
)
_
,
classdesc
=
self
.
_read_and_exec_opcode
(
ident
=
ident
+
1
,
expect
=
(
self
.
TC_CLASSDESC
,
self
.
TC_PROXYCLASSDESC
,
self
.
TC_NULL
,
self
.
TC_REFERENCE
))
array
=
JavaArray
(
classdesc
)
self
.
_add_reference
(
array
,
ident
)
(
size
,)
=
self
.
_readStruct
(
">i"
)
log_debug
(
"size: {0}"
.
format
(
size
),
ident
)
type_char
=
classdesc
.
name
[
0
]
assert
type_char
==
self
.
TYPE_ARRAY
type_char
=
classdesc
.
name
[
1
]
if
type_char
==
self
.
TYPE_OBJECT
or
type_char
==
self
.
TYPE_ARRAY
:
for
_
in
range
(
size
):
_
,
res
=
self
.
_read_and_exec_opcode
(
ident
=
ident
+
1
)
log_debug
(
"Object value: {0}"
.
format
(
res
),
ident
)
array
.
append
(
res
)
elif
type_char
==
self
.
TYPE_BYTE
:
array
=
JavaByteArray
(
self
.
object_stream
.
read
(
size
),
classdesc
)
elif
self
.
use_numpy_arrays
:
import
numpy
array
=
numpy
.
fromfile
(
self
.
object_stream
,
dtype
=
JavaObjectConstants
.
NUMPY_TYPE_MAP
[
type_char
],
count
=
size
)
else
:
for
_
in
range
(
size
):
res
=
self
.
_read_value
(
type_char
,
ident
)
log_debug
(
"Native value: {0}"
.
format
(
res
),
ident
)
array
.
append
(
res
)
return
array
def
do_reference
(
self
,
parent
=
None
,
ident
=
0
):
"""
Handles a TC_REFERENCE opcode
:param parent:
:param ident: Log indentation level
:return: The referenced object
"""
(
handle
,)
=
self
.
_readStruct
(
">L"
)
log_debug
(
"## Reference handle: 0x{0:X}"
.
format
(
handle
),
ident
)
ref
=
self
.
references
[
handle
-
self
.
BASE_REFERENCE_IDX
]
log_debug
(
"###-> Type: {0} - Value: {1}"
.
format
(
type
(
ref
),
ref
),
ident
)
return
ref
@
staticmethod
def
do_null
(
parent
=
None
,
ident
=
0
):
"""
Handles a TC_NULL opcode
View remainder of file in raw view
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