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Grégory Soutadé
2021-05-08 18:57:54 +02:00
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#!/bin/bash
function check_tool()
{
tool=$1
cmd=$2
a=`${cmd} 2>/dev/null`
if [ ! $? -eq 0 ] ; then
echo "${tool} is missing"
exit 1
fi
}
function check_tools()
{
check_tool "readelf" "readelf --version"
check_tool "objdump" "objdump --version"
check_tool "c++filt" "c++filt --version"
if [ ! -e ./vtable-dumper ] ; then
check_tool "git" "git --version"
check_tool "make" "make --version"
check_tool "g++" "g++ --version"
fi
}
TARGET=$1
readelf_target="${TARGET}.readelf"
sections_target="${TARGET}.sections"
vtable_target="${TARGET}.vtable"
if [ ! -f "${TARGET}" ] ; then
echo "$0 <target>"
exit 1
fi
check_tools
if [ ${TARGET} -nt ${readelf_target} ] ; then
echo "Regenerating ${readelf_target}"
$((readelf -sW ${TARGET}|c++filt > ${readelf_target}))
fi
if [ ${TARGET} -nt ${sections_target} ] ; then
echo "Regenerating ${sections_target}"
$((readelf --sections ${TARGET}|c++filt > ${sections_target}))
fi
VTABLE_ARG="-V ${vtable_target}"
if [ ${TARGET} -nt ${vtable_target} ] ; then
`objdump -d ${TARGET} 2>/dev/null`
if [ ! $? -eq 0 ]; then
echo "Unable to do objdump, maybe ${TARGET} is for another platform"
VTABLE_ARG=""
else
if [ ! -e ./vtable-dumper/vtable-dumper ] ; then
git clone XXX || exit 1
cd ./vtable-dumper
make
cd -
fi
if [ -x ./vtable-dumper/vtable-dumper ] ; then
echo "Regenerating ${vtable_target}"
$((./vtable-dumper/vtable-dumper --demangle ${TARGET}|c++filt > ${vtable_target}))
else
echo "./vtable-dumper not available"
VTABLE_ARG=""
fi
fi
fi
./InterfaceDiscovery.py -f ${TARGET} -S ${readelf_target} -s ${sections_target} ${VTABLE_ARG} -c

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LICENCE Normal file
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END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

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SOAdvancedDissector
-------------------
SOAdvancedDissector is a Python(3) script that rely on _GNU readelf_, _c++filt_ and _vtable-dumper_ to extract symbols from Linux shared libraries (.so file).
Thanks to these symbols, the full class hierarchy is built allowing to link your code with the target library.
Nevertheless, extracted information is only the start of work. It needs to be reworked to find function type returns, attributes types, filter public/private functions/attributes/methods, add some class attributes and clean some unneeded symbols.
**Important** vtable-dumper has been forked, the original tool must not be used because it doesn't (for now) implements all needed features. Please use the one from https://github.com/soutade/vtable-dumper
Details
=======
A first pass is done thanks to _readelf_ + binary analysis to extract static information, it's mandatory. It scans _typeinfo_ and _vtable_ entries.
A second optional pass use _vtable-dumper_ which load the shared library allowing to read runtime vtable (which can be cleared in static file compiled with -fPIC) and find class hierarchy. This can be done apart, especially if shared library has been compiled for another platform (ARM).
Improvments
===========
This tool has been designed to do reverse engineering of a specific library (_librmsdk.so_ from Adobe) and even if I tried to do my best, it may doesn't cover all your cases. I won't do a long term support on it but feel free to send patches.
Usage
-----
SOAdvancedDissector.py [-h] -f TARGET -s SECTION_FILE -S SYMBOL_FILE [-V VTABLE_FILE] [-o OUTPUT_DIR] [-c] [-r]
-h, --help show this help message and exit
-f TARGET, --file TARGET
Target file
-s SECTION_FILE, --section-file SECTION_FILE
Section file (result from 'readelf --sections|c++filt')
-S SYMBOL_FILE, --symbol-file SYMBOL_FILE
Symbol file (result from 'readelf -sW|c++filt')
-V VTABLE_FILE, --vtable-file VTABLE_FILE
Dynamic vtable file (result from 'vtable-dumper --demangle|c++filt')
-o OUTPUT_DIR, --output-dir OUTPUT_DIR
output directory (default ./output)
-c, --clean-output-dir
Clean output directory before computing (instead update it)
-r, --print-raw-virtual-table
Print raw virtual table (debug purpose)
It's recommended to use _SOAdvancedDissector.sh_ script that do all tools extraction stuff.
Sources
-------
Sources can be found @ http://indefero.soutade.fr/p/soadvanceddissector
Copyright
---------
Grégory Soutadé
Licence
-------
GNU GPLv3

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SOAdvancedDissector.py Executable file
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# Copyright Grégory Soutadé
# This file is part of SOAdvancedDissector
# SOAdvancedDissector is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# SOAdvancedDissector is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with SOAdvancedDissector. If not, see <http://www.gnu.org/licenses/>.
#
import re
import os
import shutil
import struct
import sys
import subprocess
import argparse
from objects import *
from cppprototypeparser import CPPPrototypeParser
from display import ProgressionDisplay
#
# Regexp for readelf -sW|c++filt
#
# 6: 006f25d0 20 OBJECT WEAK DEFAULT 20 vtable for dpdoc::Annot
num_re = '(?P<num>[0-9]+\:)'
address_re = '(?P<address>[0-9a-f]+)'
size_re = '(?P<size>[0-9]+)'
ustr_re = '(?P<{}>[A-Z]+)'
type_re = ustr_re.format('type')
link_re = ustr_re.format('link')
visibility_re = ustr_re.format('visibility')
ndx_re = '(?P<ndx>[0-9]+)'
name_re = '(?P<name>.*)'
readelf = r'[ ]+{}[ ]+{}[ ]+{}[ ]+{}[ ]+{}[ ]+{}[ ]+{}[ ]+{}'
readelf = readelf.format(num_re, address_re, size_re, type_re, link_re, visibility_re,ndx_re,name_re)
readelf_re = re.compile(readelf)
#
# Regexp for readelf --sections|c++filt
#
# [ 0] NULL 00000000 000000 000000 00 0 0 0
# [ 1] .interp PROGBITS 00000154 000154 000019 00 A 0 0 1
num_re = '(?P<num>\[[ ]*[0-9]+\])'
name_re = '(?P<name>.+)'
type_re = ustr_re.format('type')
address_re = '(?P<address>[0-9a-f]+)'
offset_re = '(?P<offset>[0-9a-f]+)'
size_re = '(?P<size>[0-9a-f]+)'
sections = r'[ ]+{}[ ]+{}[ ]+{}[ ]+{}[ ]+{}[ ]+{}[ ]+.*'
sections = sections.format(num_re, name_re, type_re, address_re, offset_re, size_re)
sections_re = re.compile(sections)
#
# Regexp for vtable-dumper --demangle|c++filt
#
# 0 0000000000000000
# 4 006e9fd0 (& typeinfo for zip::EditableStream)
# Inherit from dputils::GuardedStream
# Inherit from dpio::StreamClient
# 8 002a793d zip::EditableStream::~EditableStream()
dynvtable_idx_re = re.compile(r'(?P<index>[0-9]+)[ ]+(?P<vtable_index>[-]?0[x]?[0-9a-f]+)')
dynvtable_entry_re = re.compile(r'(?P<index>[0-9]+)[ ]+(?P<address>[0-9a-f]+) (?P<name>.*)')
dynvtable_inherit_re = re.compile(r'Inherit from (?P<inherit>.*)')
#
# Global variables
#
global_namespace = Namespace('global')
namespaces = {'global':global_namespace} # Root namespace with one (without namespace) 'global'
matched_lines = [] # Matched lines from readelf symbols output
sections_lines = [] # Matched lines from readelf sections output
sections_addr = [] # Contains tuple (section_addr_start, section_addr_end, section_offset)
address_size = 4 # Target address size (32bits by default)
classes_with_inheritance = []
namespace_dependencies = {}
display = ProgressionDisplay()
def line_count(filename):
"""Do 'wc -l <filename>'
Returns
-------
int
Line count of filename
"""
try:
return int(subprocess.check_output(['wc', '-l', filename]).split()[0])
except:
return 0
def findBinOffset(addr):
"""Find offset into binary file from target address
Sections must have been extracted
Parameters
----------
addr : int
Target address
Returns
-------
int
Offset or None if not found
"""
for (start, end, offset) in sections_addr:
if addr >= start and addr <= end:
return (addr - start) + offset
return None
def funcnameFromProtype(fullname):
"""Return function name (name + parameters)
from prototype (includes namespaces + base class)
Parameters
----------
fullname : str
Full function name (package::NCXStreamReceiver::totalLengthReady(unsigned int))
Returns
-------
str
Function name + parameters
"""
if fullname.startswith('typeinfo'):
return ('typeinfo()', '')
parser = CPPPrototypeParser(fullname)
return (parser.funcname + parser.fullparameters, '::'.join(parser.namespaces))
def findObjectInCache(name):
"""Find class object in namespaces
Parameters
----------
name : str
Full class name (package::NCXStreamReceiver)
Returns
-------
obj
Found class or None
"""
parser = CPPPrototypeParser(name)
if parser.is_function:
return global_namespace.child(parser.funcname)
if not parser.namespaces:
return global_namespace.child(parser.classname)
if not parser.namespaces[0] in namespaces.keys():
return None
namespace = namespaces[parser.namespaces[0]]
# Don't directly use find on root to avoid duplicate name in sub namespaces
# eg : ns0::ns1::ns2::ns0::ns3::func
for targetNamespace in parser.namespaces[1:]:
namespace = namespace.find(targetNamespace)
if not namespace: return None
# print('findObjectInCache({}) --> {}'.format(name, namespace.name))
return namespace.find(parser.classname)
def findObjectFromAddr(addr):
"""Find object from address (in readelf output)
Parameters
----------
addr : int
Object address
Returns
-------
obj
Matched object or None
"""
for match in matched_lines:
if int(match.group('address'),16) == addr:
#print(match.groups())
return match
return None
def createClass(fullname):
"""Find class object in namespaces or create
it if it doesn't exists
Parameters
----------
name : str
Full class name (package::NCXStreamReceiver)
Returns
-------
obj
Found class or created one
"""
parser = CPPPrototypeParser(fullname)
class_ = Class(parser.classname, '::'.join(parser.namespaces))
if not parser.namespaces:
global_namespace.addChild(class_)
else:
if not parser.namespaces[0] in namespaces.keys():
lastNamespace = Namespace(parser.namespaces[0])
namespaces[parser.namespaces[0]] = lastNamespace
else:
lastNamespace = namespaces[parser.namespaces[0]]
for name in parser.namespaces[1:]:
newNamespace = lastNamespace.child(name)
if not newNamespace:
newNamespace = Namespace(name)
lastNamespace.addChild(newNamespace)
lastNamespace = newNamespace
lastNamespace.addChild(class_)
return class_
def parseDynamicVtable(filename):
"""Parse dynamic vtable (vtable-dumper) file
and fix static vtable
Parameters
----------
filename : str
Filename to parse
"""
display.setTarget(' * Parse dynamic vtable', line_count(filename), 10)
curObj = None
with open(filename, 'r') as fd:
for line in fd.readlines():
display.progress(1)
# Empty line -> end of current class
line = line.strip()
if len(line) == 0:
curObj = None
continue
if curObj is None:
# New vtable
if not line.startswith('Vtable for '): continue
objname = line[len('Vtable for '):]
curObj = findObjectInCache(objname)
else:
# First, try object vtable entry
match = dynvtable_entry_re.match(line)
if match:
idx = int(match.group('index'))
func = None
if match.group('name') == '__cxa_pure_virtual':
func = Function('virtfunc{}()'.format(idx), 0, True, True)
else:
funcaddr = int(match.group('address'),16)
match = findObjectFromAddr(funcaddr)
funcname = 'unknown_virtfunc{}()'.format(idx)
funcnamespaces = ''
if match:
(funcname, funcnamespaces) = funcnameFromProtype(match.group('name'))
else:
sys.stderr.write('Error dynvtable0, no match for {}\n'.format(hex(funcaddr)))
func = Function(funcname, funcaddr, virtual=True, namespace=funcnamespaces)
curObj.updateVirtualFunction(int(idx/address_size), func)
continue
# Index vtable entry
match = dynvtable_idx_re.match(line)
if match:
funcaddr = int(match.group('vtable_index'),16)
funcname = 'vtable_index{}'.format(-funcaddr)
func = Function(funcname, funcaddr, True)
curObj.updateVirtualFunction(int(int(match.group('index'))/address_size), func)
continue
# Inherit entry
match = dynvtable_inherit_re.match(line)
if match:
basename = match.group('inherit')
base = findObjectInCache(basename)
if not base:
base = createClass(basename)
curObj.addBaseClass(base)
classes_with_inheritance.append(curObj)
continue
sys.stderr.write('Error dynvtable, no match for {}\n'.format(line))
sys.stderr.flush()
display.finish()
def fixupInheritance():
"""Fix inheritance : each class reports implemented pure virtual function
into its base(s)
"""
global classes_with_inheritance
display.setTarget(' * Fixup inheritance', len(classes_with_inheritance))
for class_ in classes_with_inheritance:
display.progress(1)
class_.fixupInheritance()
display.finish()
classes_with_inheritance = None # Release memory
def parseStaticVtable(binfile):
"""Parse vtable vtable object into binary file
and create static vtable entries
Parameters
----------
binfile : str
Filename of binary file to inspect objects
"""
display.setTarget(' * Parse static vtable', len(matched_lines), 10)
with open(binfile, 'rb') as fd:
for match in matched_lines:
display.progress(1)
name = match.group('name')
if not name.startswith('vtable for'): continue
address = int(match.group('address'), 16)
# vtable for mtext::cts::ListOfGlyphRunsCTS
classname = name[len('vtable for '):]
class_ = findObjectInCache(classname)
if class_ is None:
class_ = createClass(classname)
binaddr = findBinOffset(address)
fd.seek(binaddr)
nb_funcs = int(int(match.group('size'))/address_size)
#print('vtable {} {} funcs'.format(classname, nb_funcs))
fd.seek(binaddr)
for i in range(0, nb_funcs):
funcaddr = 0
if address_size == 4:
funcaddr, = struct.unpack('<I', fd.read(address_size))
elif address_size == 8:
funcaddr, = struct.unpack('<Q', fd.read(address_size))
func = None
if funcaddr == 0:
# Address == 0 --> pure virtual
func = Function('virtfunc{}()'.format(i), 0, True, True)
else:
funcname = ''
funcnamespaces = ''
if funcaddr == 0 or hex(funcaddr).startswith('0xf'): # Negative address
funcname = 'vtable_index{}'.format(-funcaddr)
else:
match = findObjectFromAddr(funcaddr)
try:
if not match:
sys.stderr.write('No func found at : {}\n'.format(hex(funcaddr)))
(funcname, funcnamespaces) = funcnameFromProtype(match.group('name'))
except:
if match:
sys.stderr.write('FFP except : {}'.format(match.group('name')))
funcname = 'unknown_virtfunc{}()'.format(i)
func = Function(funcname, funcaddr, virtual=True, namespace=funcnamespaces)
try:
# print('Add virt {}'.format(func))
class_.addVirtualFunction(func)
except:
print(match.group('name'))
print(class_)
raise
display.finish()
def parseTypeinfo():
"""Parse typeinfo objects in matched_lines
and create classes
"""
typeinfos = []
for match in matched_lines:
name = match.group('name')
# "typeinfo for css::MediaParser"
if not name.startswith('typeinfo for'): continue
typeinfos.append(name[len('typeinfo for '):])
# print(name)
# Sort array before creating class in order to have the right
# class hierarchy
for classname in sorted(typeinfos):
#print(classname)
createClass(classname)
def parseSymbolFile(filename):
"""Parse readelf symbols output file
and fill matched_lines
Parameters
----------
filename : str
Filename to parse
"""
display.setTarget(' * Parse symbols file', line_count(filename), 10)
with open(filename, 'r') as fd:
for line in fd.readlines():
display.progress(1)
line = line.rstrip()
if not line: continue
match = readelf_re.match(line)
if not match: continue
if match.group('type') not in ('FUNC', 'OBJECT'):
continue
if match.group('link') not in ('GLOBAL', 'WEAK'):
continue
if match.group('visibility') not in ('DEFAULT'):
continue
matched_lines.append(match)
if matched_lines:
address_size = int(len(matched_lines[0].group('address'))/2)
display.finish()
def parseSectionFile(filename):
"""Parse readelf sections output file
and fill sections_lines and sections_addr
Parameters
----------
filename : str
Filename to parse
"""
# We assume there is about 20 sections
display.setTarget(' * Parse sections file (1/2)', line_count(filename))
with open(filename, 'r') as fd:
for line in fd.readlines():
display.progress(1)
line = line.rstrip()
if not line: continue
match = sections_re.match(line)
if not match: continue
sections_lines.append(match)
display.finish()
display.setTarget(' * Parse sections file (2/2)', line_count(filename))
for match in sections_lines:
display.progress(1)
start = int(match.group('address'), 16)
size = int(match.group('size'), 16)
offset = int(match.group('offset'), 16)
sections_addr.append((start, start+size, offset))
display.finish()
def addAllMembers():
"""Add all other members that have not been computed
"""
display.setTarget(' * Add all members', len(matched_lines), 10)
for match in matched_lines:
display.progress(1)
virtual = False
funcaddr = int(match.group('address'),16)
name = match.group('name')
if name.startswith('typeinfo') or\
name.startswith('vtable'):
continue
if name.startswith('non-virtual thunk to '):
name = name[len('non-virtual thunk to '):]
virtual = True
parser = CPPPrototypeParser(name)
class_ = None
obj = None
funcname = ''
classname = ''
if match.group('type') == 'FUNC':
classname = parser.fullclassname
# C functions doesn't have () in their name
if not '(' in name:
obj = Function(name + '()', funcaddr)
global_namespace.addChild(obj)
continue
else:
(funcname, funcnamespaces) = funcnameFromProtype(name)
obj = Function(funcname, funcaddr, virtual=virtual, namespace=funcnamespaces)
# No classname : add into global namespace
if not classname:
global_namespace.addChild(obj)
continue
class_ = findObjectInCache(classname)
else: # Object
if parser.funcname:
obj = Attribute(parser.funcname, funcaddr)
classname = parser.classname
elif parser.classname:
obj = Attribute(parser.classname, funcaddr)
# No namespaces : add into global namespace
if not parser.namespaces:
global_namespace.addChild(obj)
continue
classname = '::'.join(parser.namespaces)
class_ = findObjectInCache(parser.fullclassname)
# Try to search in namespaces from C++ method
if not class_ and parser.namespaces:
class_ = findObjectInCache('::'.join(parser.namespaces))
# Try to search in namespaces from C function
if not class_ and classname in namespaces.keys():
class_ = namespaces[classname]
# If still not, it's a new class/function
if not class_:
if not classname:
sys.stderr.write('AAM Err3 "{}" "{}"\n'.format(name, funcname))
continue
else:
class_ = createClass(classname)
try:
# Could be class or namespace
class_.addChild(obj)
except:
sys.stderr.write('Not class {} {}\n'.format(name, class_.name))
sys.stderr.flush()
# raise
display.finish()
def fixBadClassAssertion():
"""We could have consider obj from a class and created it,
but in fact, it just namespace
"""
toDelete = []
toAdd = []
display.setTarget(' * Fix bad class assertion (1/2)', len(global_namespace.childs))
for obj in global_namespace.childs:
display.progress(1)
if type(obj) == Class and obj.looksLikeNamespace():
if obj.name in namespaces:
newNamespace = namespaces[obj.name]
else:
newNamespace = Namespace(obj.name)
newNamespace.fillFrom(obj)
toAdd.append(newNamespace)
toDelete.append(obj)
display.finish()
display.setTarget(' * Fix bad class assertion (2/2)', len(toDelete)+len(toAdd))
for obj in toDelete:
display.progress(1)
global_namespace.removeChild(obj)
for obj in toAdd:
display.progress(1)
global_namespace.addChild(obj)
display.finish()
def analyseDependencies():
"""Find classes present in method parameters but
not previously found
"""
display.setTarget(' * Analyse dependencies (1/2)', len(namespaces.keys()))
allParams = []
for namespace in namespaces.values():
display.progress(1)
params = namespace.getDependencies()
for param in params:
allParams.append(param)
display.finish()
if allParams:
allParams = list(set(allParams))
display.setTarget(' * Analyse dependencies (2/2)', len(allParams))
for param in allParams:
display.progress(1)
class_ = findObjectInCache(param)
if not class_:
createClass(param)
display.finish()
header_re = re.compile('[A-Za-z0-9_-]+')
def headerNameToFilename(name):
"""Transform namespace name into filename
Keep only characters from header_re and change name
in lower case
Parameters
----------
name : str
Name to transform
Returns
-------
str
Computed name
"""
if '::' in name:
parser = CPPPrototypeParser(name)
if not parser.namespaces:
return None
res = parser.namespaces[0].lower()
else:
res = name.lower()
if '.so' in res:
res = os.path.basename(res).split('.so')[0] # Remove .so* extension
res = ''.join([c for c in res if header_re.match(c)])
return res
def outputHeader(namespace, filename):
"""Create header file from namespace description
Parameters
----------
namespace : str
Namespace name
filename : str
Output filename
"""
dependecies = namespace.getDependencies()
# Remove standard dependencies
if 'std' in dependecies:
dependecies.remove('std')
elif '__gnu_cxx' in dependecies:
dependecies.remove('__gnu_cxx')
headers = []
define = '_{}'.format(os.path.basename(filename).upper().replace('.', '_'))
with open(filename, 'w') as fd:
fd.write('/*\n')
fd.write(' File automatically generated by SOAdvancedDissector.py\n')
fd.write(' More information at http://indefero.soutade.fr/p/soadvanceddissector\n')
fd.write('*/\n\n')
fd.write('#ifndef {}\n'.format(define))
fd.write('#define {}\n\n'.format(define))
for dep in dependecies:
headername = headerNameToFilename(dep)
if headername and not headername in headers:
fd.write('#include <{}.h>\n'.format(headername))
# Filter multiple headers
headers.append(headername)
if dependecies:
fd.write('\n\n')
fd.write('{}'.format(namespace))
fd.write('#endif // {}'.format(define))
def writeResult(target, outputDir, cleanOutputDir):
"""Write result into header files (one per namespace)
Parameters
----------
cleanOutputDir : bool
Clean output directory before processing
"""
if cleanOutputDir:
print('Clean {}'.format(outputDir))
shutil.rmtree(outputDir, ignore_errors=True)
if not os.path.exists(outputDir):
os.mkdir(outputDir)
setPrintIndent(True)
keys = namespaces.keys()
display.setTarget(' * Write output files', len(keys))
for namespace in keys:
if namespace == 'std': continue # Don't try to write std classes
filename = '{}.h'.format(headerNameToFilename(namespace))
if namespace == 'global':
filename = '{}.h'.format(headerNameToFilename(target))
outputHeader(namespaces[namespace], '{}/{}'.format(outputDir, filename))
display.progress(1)
display.finish()
setPrintIndent(False)
if __name__ == "__main__":
parser = argparse.ArgumentParser(description='Extract interfaces (classes, functions, variables) from a GNU/Linux shared library')
parser.add_argument('-f', '--file', help="Target file",
dest="target", required=True)
parser.add_argument('-s', '--section-file', help="Section file (result from 'readelf --sections|c++filt')",
dest="section_file", required=True)
parser.add_argument('-S', '--symbol-file', help="Symbol file (result from 'readelf -sW|c++filt')",
dest="symbol_file", required=True)
parser.add_argument('-V', '--vtable-file', help="Dynamic vtable file (result from 'vtable-dumper --demangle|c++filt')",
dest="vtable_file")
parser.add_argument('-o', '--output-dir', help="output directory (default ./output)",
default="./output", dest="output_dir")
parser.add_argument('-c', '--clean-output-dir', help="Clean output directory before computing (instead update it)",
default=False, action="store_true", dest="clean_output")
parser.add_argument('-r', '--print-raw-virtual-table', help="Print raw virtual table (debug purpose)",
default=False, action="store_true", dest="raw_virtual_table")
args = parser.parse_args()
setPrintRawVirtualTable(args.raw_virtual_table)
print('Analyse {}'.format(args.target))
parseSectionFile(args.section_file)
parseSymbolFile(args.symbol_file)
parseTypeinfo()
parseStaticVtable(args.target)
if args.vtable_file:
parseDynamicVtable(args.vtable_file)
fixupInheritance()
addAllMembers()
if args.vtable_file:
fixBadClassAssertion()
analyseDependencies()
writeResult(args.target, args.output_dir, args.clean_output)
print('Result wrote in {}'.format(args.output_dir))

75
SOAdvancedDissector.sh Executable file
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#!/bin/bash
function check_tool()
{
tool=$1
cmd=$2
a=`${cmd} 2>/dev/null`
if [ ! $? -eq 0 ] ; then
echo "${tool} is missing"
exit 1
fi
}
function check_tools()
{
check_tool "readelf" "readelf --version"
check_tool "objdump" "objdump --version"
check_tool "c++filt" "c++filt --version"
if [ ! -e ./vtable-dumper ] ; then
check_tool "git" "git --version"
check_tool "make" "make --version"
check_tool "g++" "g++ --version"
fi
}
TARGET=$1
target=`basename ${TARGET}`
readelf_target="${target}.readelf"
sections_target="${target}.sections"
vtable_target="${target}.vtable"
if [ ! -f "${TARGET}" ] ; then
echo "$0 <target>"
exit 1
fi
check_tools
if [ ${TARGET} -nt ${readelf_target} ] ; then
echo "Regenerating ${readelf_target}"
readelf -sW ${TARGET}|c++filt > ${readelf_target}
fi
if [ ${TARGET} -nt ${sections_target} ] ; then
echo "Regenerating ${sections_target}"
readelf --sections ${TARGET}|c++filt > ${sections_target}
fi
VTABLE_ARG="-V ${vtable_target}"
if [ ${TARGET} -nt ${vtable_target} ] ; then
echo objdump -d ${TARGET}
objdump -d ${TARGET} >/dev/null 2>&1
if [ ! $? -eq 0 ]; then
echo "Unable to do objdump, maybe ${TARGET} is for another platform"
VTABLE_ARG=""
else
if [ ! -e ./vtable-dumper/vtable-dumper ] ; then
git clone https://github.com/soutade/vtable-dumper.git || exit 1
cd ./vtable-dumper
make
cd -
fi
if [ -x ./vtable-dumper/vtable-dumper ] ; then
echo "Regenerating ${vtable_target}"
./vtable-dumper/vtable-dumper -demangled ${TARGET}|c++filt > ${vtable_target}
else
echo "./vtable-dumper not available"
VTABLE_ARG=""
fi
fi
fi
./SOAdvancedDissector.py -f ${TARGET} -S ${readelf_target} -s ${sections_target} ${VTABLE_ARG} -c

220
cppprototypeparser.py Executable file
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# Copyright Grégory Soutadé
# This file is part of SOAdvancedDissector
# SOAdvancedDissector is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# SOAdvancedDissector is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with SOAdvancedDissector. If not, see <http://www.gnu.org/licenses/>.
#
class CPPPrototypeParser:
"""Class that extract all parts of a cpp method prototype"""
def __init__(self, fullname=''):
if fullname:
self.parse(fullname)
else:
self._reset()
def _reset(self):
self.fullclassname = '' # Class name with its namespaces
self.names = [] # All decoded names : namespaces, class, function
self.namespaces = [] # Namespaces part
self.parameters = [] # Parameters part
self.fullparameters = '' # Full parameters string
self.funcname = '' # Function name
self.classname = '' # Class name
self.fullname = '' # namespaces + class + function + parameters
self.has_parameters = False
self.is_function = False # Is single function or class method
# Should parse something like :
# uft::ClassDescriptor<layout::MasterConditionalReference>::queryFunc(uft::StructDescriptor const*, void*, uft::Value const&, void*)
def parse(self, fullname):
"""Parse CPP method prototype and fill class members
with right values
Parameters
----------
fullname : str
Prototype to parse
"""
self._reset()
self.fullname = fullname
if '(' in fullname:
self.has_parameters = True
splitname = fullname.split('(')
if 'operator()' in fullname:
namepart = splitname[0] + '()'
self.fullparameters = '(' + ''.join(splitname[2:])
else:
namepart = splitname[0]
self.fullparameters = '(' + ''.join(splitname[1:])
self._parseParameters()
else:
namepart = fullname
self.names = self._parseName(namepart)
# Function or class method
if self.has_parameters:
self.funcname = self.names[-1]
# Class method with at least class name + method name
if len(self.names) >= 2:
self.classname = self.names[-2]
self.fullclassname = '::'.join(self.names[:-1])
# Contains namespaces
if len(self.names) > 2:
self.namespaces = self.names[:-2]
# Simple function
else:
self.is_function = True
self.funcname = self.names[0]
else:
# Class name with or without namespaces
self.classname = self.names[-1]
if len(self.names) > 1:
self.namespaces = self.names[:-1]
if self.funcname.endswith(' const'):
self.funcname = self.funcname[:-len(' const')]
if self.classname.endswith(' const'):
self.classname = self.classname[:-len(' const')]
def _parseName(self, name):
"""Parse CPP method name and split in different parts
using '::' as delimiter.
It supports templates names and function prototypes
Parameters
----------
name : str
Name to parse
Returns
-------
list
Splitted name parts
"""
nb_parenthesis = 0
nb_chevrons = 0
nb_parenthesis = 0
cur_buf = ''
names = []
nb_db_points = 0
in_template = False
in_parenthesis = False
operator = False
for c in name.strip():
if operator:
cur_buf += c
continue
if c == '(':
cur_buf += c
nb_parenthesis += 1
in_parenthesis = True
elif c == ')':
cur_buf += c
nb_parenthesis -= 1
if nb_parenthesis == 0:
in_parenthesis = False
elif c == ':':
if in_template or in_parenthesis:
cur_buf += c
continue
nb_db_points += 1
if nb_db_points == 2:
names.append(cur_buf)
cur_buf = ''
nb_db_points = 0
elif c == '<':
cur_buf += c
in_template = True
nb_chevrons += 1
elif c == '>':
cur_buf += c
nb_chevrons -= 1
if nb_chevrons == 0:
in_template = False
else:
cur_buf += c
# Next characters are part of operator name
if cur_buf == 'operator':
operator = True
if cur_buf:
names.append(cur_buf)
return names
def _parseParameters(self):
"""Parse each parameters and do split on them
using '::' as delimiter.
Update self.parameters member
"""
nb_chevrons = 0
in_template = False
cur_buf = ''
# Parse fullparameters except parenthesis
for c in self.fullparameters[1:-1]:
if c == ',':
if in_template: continue
self.parameters.append(self._parseName(cur_buf))
cur_buf = ''
elif c == '<':
cur_buf += c
if in_template: continue
in_template = True
nb_chevrons += 1
elif c == '>':
cur_buf += c
nb_chevrons -= 1
if nb_chevrons == 0:
in_template = False
else:
cur_buf += c
if cur_buf:
self.parameters.append(self._parseName(cur_buf))
# Some tests
if __name__ == "__main__":
strings = ['uft::ClassDescriptor<layout::MasterConditionalReference>::queryFunc(uft::StructDescriptor const*, void*, uft::Value const&, void*)',
'adept::LicenseImpl::getVoucherID()',
'adept::DRMProcessorImpl::addSignIn()',
'layout::InlineLayoutEngine::AnnotationGlyphRunCounter::operator()(uft::sref<layout::RunListItem>&)',
'dp::PointerVector<void>::~PointerVector()',
'adept::IoCallbackWrapper<adept::DRMProcessorImpl>::IoCallbackWrapper(adept::DRMProcessorImpl*, void (adept::DRMProcessorImpl::*)(dp::Unknown*, bool), void (adept::DRMProcessorImpl::*)(double), void (adept::DRMProcessorImpl::*)(dp::String const&))',
'tetraphilia::ThreadImpl<T3AppTraits, tetraphilia::PFiber<T3AppTraits>, tetraphilia::NoClientYieldHook<T3AppTraits> >',
'debugOutputOpen']
for s in strings:
p = CPPPrototypeParser(s)
print('Original {}'.format(s))
print('Full parameters {}'.format(p.fullparameters))
print('Names {}'.format(p.names))
print('Namespaces {}'.format(p.namespaces))
print('Parameters {}'.format(p.parameters))
print('Class name {}'.format(p.classname))
print('Func name {}'.format(p.funcname))
print('Full class name {}'.format(p.fullclassname))
print('Full parameters {}'.format(p.fullparameters))
print('Is function ? {}'.format(p.is_function))
print('Has parameters ? {}'.format(p.has_parameters))
print("")

89
display.py Normal file
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# -*- coding: utf-8 -*-
#
# Copyright Grégory Soutadé
# This file is part of SOAdvancedDissector
# SOAdvancedDissector is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# SOAdvancedDissector is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with SOAdvancedDissector. If not, see <http://www.gnu.org/licenses/>.
#
import sys
class ProgressionDisplay():
"""Class that manage nice display
with progression continuous update in percent"""
def __init__(self):
self.reset(False)
def reset(self, printEmptyLine=False):
"""Reset display and optionaly print an empty line"""
self.message = ''
self.target_progression = 0
self.cur_progression = 0
self.watermark = 0
self.cur_watermark = 0
if printEmptyLine:
print('')
def setTarget(self, message, target=0, watermark=0):
"""New progression to display
Parameters
----------
message : str
Message to display
target (Optional) : int
Max progression value, if not set, no percent will be displayed
watermark (Optional) : int
Only display message when progression >= watermark
"""
self.reset()
self.message = message
self.target_progression = target
self.watermark = watermark
def progress(self, increment):
"""Increment progression and display new one"""
self.cur_progression += increment
self.cur_watermark += increment
if self.cur_progression > self.target_progression:
self.cur_progression = self.target_progression
if self.cur_watermark < self.watermark and\
self.cur_progression < self.target_progression:
return
display = ''
if self.target_progression:
cur_percent = int((self.cur_progression*100)/self.target_progression)
display = '{} [{}%]'.format(self.message, cur_percent)
else:
display = '{}'.format(self.message)
sys.stdout.write('\r{}\r'.format(' ' * (len(display)+5))) # First, clear line
sys.stdout.write(display)
sys.stdout.flush()
def finish(self):
"""End of progression, ensure we display "100%" value"""
if self.target_progression:
self.progress(self.target_progression) # Print 100%
print('')
else:
pass # Do nothing

536
objects.py Normal file
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# -*- coding: utf-8 -*-
#
# Copyright Grégory Soutadé
# This file is part of SOAdvancedDissector
# SOAdvancedDissector is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# SOAdvancedDissector is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with SOAdvancedDissector. If not, see <http://www.gnu.org/licenses/>.
#
import sys
from cppprototypeparser import CPPPrototypeParser
print_raw_virtual_table = False
print_indent = False
cur_indent = 0
parser = CPPPrototypeParser()
def setPrintRawVirtualTable(value):
global print_raw_virtual_table
print_raw_virtual_table = value
def setPrintIndent(value):
global print_indent
print_indent = value
def _getIndent():
global print_indent
indent = ''
if print_indent:
indent = ' '*cur_indent
return indent
class Object:
"""Abstract object representation (simply a name)"""
def __init__(self, name):
self.name = name
def find(self, obj):
if self == obj:
return self
return None
def getParametersDependencies(self):
return None
def getDependencies(self):
"""Get dependencies from other namespaces"""
return None
def __eq__(self, other):
if type(other) == str:
return self.name == other
else:
return self.name == other.name
def __lt__(self, other):
return self.name < other.name
class Attribute(Object):
"""Class attribute (member)"""
def __init__(self, name, address=0, namespace=''):
Object.__init__(self, name)
self.address = address
self.namespace = namespace
def fullname(self):
"""Return namespace::name"""
if self.namespace:
return '{}::{}'.format(self.namespace, self.name)
else:
return self.name
def __eq__(self, other):
if type(other) == str:
return self.name == other
else:
if hasattr(other, 'address'):
return self.address == other.address
else:
return self.name == other.name
def __str__(self):
return '{}void* {};\n'.format(_getIndent(), self.name)
class Function(Attribute):
"""Function description"""
def __init__(self, name, address=0, virtual=False, pure_virtual=False, namespace=''):
# Be sure we have () in name
if '(' in name and not name.endswith(')') and not name.endswith('const')\
and not name.endswith('const&'):
name += ')'
Attribute.__init__(self, name, address, namespace)
self.virtual = virtual
self.pure_virtual = pure_virtual
self.constructor = False
def isPure(self):
"""Is function pure virtual"""
return self.pure_virtual
def setConstructor(self, value):
"""Set/clear constructor property"""
self.constructor = value
def getDependencies(self):
"""Get dependencies from other namespaces"""
dependencies = []
parser.parse(self.name)
if not parser.has_parameters:
return None
for p in parser.parameters:
# If parameter has namespace, add into dependencies
if type(p) == list and len(p) > 1 and not self.namespace.startswith(p[0]):
dep = '::'.join(p)
if not '::' in dep: continue
dep = dep.replace('*', '')
dep = dep.replace('&', '')
if dep.endswith(' const'):
dep = dep[:-len(' const')]
dependencies.append(dep)
if dependencies:
return list(set(dependencies))
return None
def _getReturnType(self):
"""Get method return type"""
type_ = 'void '
if self.name.startswith('vtable_index'): type_='void* '
elif self.name.startswith('operator new'): type_='void* '
elif self.constructor: type_ = ''
return type_
def __str__(self):
res = ''
type_ = self._getReturnType()
if self.pure_virtual:
res = 'virtual {}{} = 0;\n'.format(type_, self.name)
elif self.virtual:
res = 'virtual {}{};\n'.format(type_, self.name)
else:
res = '{}{};\n'.format(type_, self.name)
res = '{}{}'.format(_getIndent(), res)
return res
class Namespace(Object):
"""Namespace description"""
def __init__(self, name):
Object.__init__(self, name)
self.childs = []
self.dependencies = [] # Dependencies from objects in other namespace
def addChild(self, child):
"""Add child (function, class, attribute) to namespace"""
if not child in self.childs:
self.childs.append(child)
def removeChild(self, child):
"""Remove child from namespace"""
self.childs.remove(child)
def child(self, name):
"""Try to find name in childs without recursion"""
for child in self.childs:
if child.name == name:
return child
return None
def find(self, obj):
"""Try to find obj in childs and their own child (with recursion)"""
if self == obj:
return self
for child in self.childs:
res = child.find(obj)
if res:
return res
return None
def fillFrom(self, other):
"""Copy all childs from other object"""
for child in other.childs:
self.childs.append(child)
def getDependencies(self):
"""Get dependencies from other namespaces"""
dependencies = []
for child in self.childs:
depend = child.getDependencies()
if depend:
for d in depend:
if not d.startswith('{}::'.format(self.name)):
dependencies.append(d)
if dependencies:
return list(set(dependencies))
return []
def __str__(self):
global cur_indent
if self.name != 'global':
res = '{}namespace {} {{\n\n'.format(_getIndent(), self.name)
cur_indent += 1
else:
res = ''
namespaces = []
classes = []
functions = []
other = []
for child in self.childs:
if type(child) == Namespace: namespaces.append(child)
elif type(child) == Class: classes.append(child)
elif type(child) == Function: functions.append(child)
else: other.append(child)
# Compute classes inheritance dependency
classes_dep = []
for class_ in sorted(classes):
isDep = False
for pos, class2 in enumerate(classes_dep):
if class_ in class2.inherit_from:
isDep = True
classes_dep.insert(pos, class_)
break
if not isDep:
classes_dep.append(class_)
# Add class declaration
if len(classes_dep) > 1:
for c in classes_dep:
res += '{}class {};\n'.format(_getIndent(), c.name)
if classes_dep: res += '\n\n'
for namespace in sorted(namespaces):
res += namespace.__str__()
if namespaces: res += '\n'
for c in classes_dep:
res += c.__str__()
if classes_dep: res += '\n'
for func in sorted(functions):
res += func.__str__()
if functions: res += '\n'
for child in sorted(other):
res += child.__str__()
if other: res += '\n'
if self.name != 'global':
cur_indent -= 1
res += '{}}}\n'.format(_getIndent())
res += '\n'
return res
class Class(Namespace):
"""Class description"""
def __init__(self, name, namespace=''):
Namespace.__init__(self, name)
self.constructors = []
self.destructors = []
self.inherit_from = []
self.virtual_functions = []
self.namespace = namespace
def fullname(self):
"""Return namespace::name"""
if self.namespace:
return '{}::{}'.format(self.namespace, self.name)
else:
return self.name
def _checkConstructor(self, obj):
"""Check if obj is a constructor/destructor and
set its property.
Returns
-------
list
Adequat list (constructor or destructor) or None
"""
if type(obj) != Function: return None
if obj.name.startswith('~'):
# sys.stderr.write('Check C {} -> D\n'.format(obj.name))
obj.setConstructor(True)
return self.destructors
if obj.name.startswith('{}('.format(self.name)):
# sys.stderr.write('Check C {} -> C\n'.format(obj.name))
obj.setConstructor(True)
return self.constructors
# sys.stderr.write('Check C {} -> N\n'.format(obj.name))
return None
def addVirtualFunction(self, obj):
"""Add a new virtual function"""
if obj.address == 0 or not obj in self.virtual_functions:
self._checkConstructor(obj)
self.virtual_functions.append(obj)
def updateVirtualFunction(self, idx, obj):
"""Update virtual function at index idx"""
try:
self._checkConstructor(obj)
self.virtual_functions[idx] = obj
except:
sys.stderr.write('updateVirtualFunction Error, cur vtable size {}; idx {}, class {}, obj {}\n'.format(len(self.virtual_functions), idx, self.name, obj))
sys.stderr.flush()
def addMember(self, obj):
"""Add a new member"""
if obj in self.virtual_functions or\
obj in self.constructors or\
obj in self.destructors or\
obj in self.childs:
return
targetList = self._checkConstructor(obj)
if targetList is None:
self.childs.append(obj)
else:
targetList.append(obj)
def addChild(self, child):
return self.addMember(child)
def addBaseClass(self, obj):
self.inherit_from.append(obj)
def fixVirtualFunction(self, index, newName):
"""Set real name for virtfunc and unknown virtfunc
generic names
"""
if index >= len(self.virtual_functions):
sys.stderr.write('FVF Error {} > {} for {}/{}\n'.format(index, len(self.virtual_functions), newName, self.fullname()))
return False
virtfunc = self.virtual_functions[index]
if not virtfunc.isPure():
return False
if virtfunc.name.startswith('virtfunc') or\
virtfunc.name.startswith('unknown_virtfunc'):
virtfunc.name = newName
self._checkConstructor(virtfunc)
return True
return False
def hasMultipleVirtualSections(self):
"""Check if we have a vtable_indexX (X>0) entry in our
virtual functions table
"""
if not self.virtual_functions:
return False
for vfunc in self.virtual_functions:
if vfunc.name.startswith('vtable_index') and\
vfunc.name != 'vtable_index0':
return True
return False
def fixupInheritance(self):
"""Report virtual function name in base class
if there are pure virtual.
"""
if not self.inherit_from:
return
# First, handle all of our bases
for base in self.inherit_from:
base.fixupInheritance()
updated = False
curIdx = 0
if self.hasMultipleVirtualSections():
for base in self.inherit_from:
# First is vtable_index, skip it
curIdx += 1
targetIdx = 1
updated = False
while curIdx < len(base.virtual_functions):
vfunc = self.virtual_functions[curIdx]
if vfunc.name.startswith('virtual_index'):
break
if base.fixVirtualFunction(targetIdx, vfunc.name):
updated = True
curIdx += 1
targetIdx += 1
if updated:
base.fixupInheritance()
# Go to next vtable index if we are not
while curIdx < len(self.virtual_functions):
vfunc = self.virtual_functions[curIdx]
if vfunc.name.startswith('virtual_index'):
break
curIdx += 1
else:
for base in self.inherit_from:
targetIdx = 0
while targetIdx < len(base.virtual_functions):
vfunc = self.virtual_functions[curIdx]
if base.fixVirtualFunction(targetIdx, vfunc.name):
updated = True
curIdx += 1
targetIdx += 1
if updated:
base.fixupInheritance()
def looksLikeNamespace(self):
"""Empty specific class attributes looks like a namespace
"""
return not self.constructors and\
not self.destructors and\
not self.inherit_from and\
not self.virtual_functions
def _getDependencies(self, targetList, dependencies):
for obj in targetList:
res = obj.getDependencies()
if res:
for d in res:
if self.namespace and not d.startswith(self.namespace):
dependencies.append(d)
def getDependencies(self):
"""Get dependencies from other namespaces"""
dependencies = []
for base in self.inherit_from:
if base.namespace:
dependencies.append(base.fullname())
self._getDependencies(self.constructors, dependencies)
self._getDependencies(self.destructors, dependencies)
self._getDependencies(self.virtual_functions, dependencies)
self._getDependencies(self.childs, dependencies)
if dependencies:
return list(set(dependencies))
return None
def printOverloadedVirtualTable(self):
"""Only select overloaded methods from
virtual table
"""
res = ''
vfunc_res = ''
for vfunc in self.virtual_functions:
if vfunc.name.startswith('vtable_index') or\
vfunc.name.startswith('typeinfo()'):
continue
# Not overloaded by us
if vfunc.namespace and vfunc.namespace != self.namespace:
continue
vfunc_res = vfunc.__str__()
# Method already in result,
# It's the case for virtual descriptor
if vfunc_res in res:
continue
res += vfunc_res
return res
def __str__(self):
global print_raw_virtual_table
global cur_indent
res = '{}class {}'.format(_getIndent(), self.name)
if self.inherit_from:
res += ': '
bases = []
for base in self.inherit_from:
bases.append('public {}'.format(base.fullname()))
res += ', '.join(bases)
res += '\n{}{{\n'.format(_getIndent())
res += '{}public:\n'.format(_getIndent())
cur_indent += 1
for constructor in sorted(self.constructors):
res += constructor.__str__()
if len(self.constructors): res += '\n'
for destructor in sorted(self.destructors):
res += destructor.__str__()
if len(self.destructors): res += '\n'
# Do not sort virtual tables !
virtfuncs = ''
if print_raw_virtual_table:
for virtfunc in self.virtual_functions:
virtfuncs += virtfunc.__str__()
else:
virtfuncs = self.printOverloadedVirtualTable()
if len(virtfuncs): res += '{}\n'.format(virtfuncs)
methods = []
other = []
for child in self.childs:
if type(child) == Function: methods.append(child)
else: other.append(child)
for method in sorted(methods):
res += method.__str__()
if methods: res += '\n'
for child in sorted(other):
res += child.__str__()
if other: res += '\n'
cur_indent -= 1
res += '{}}};\n\n'.format(_getIndent())
return res