Source code for binaryninja.fileaccessor

# Copyright (c) 2015-2017 Vector 35 LLC
#
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# furnished to do so, subject to the following conditions:
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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import traceback
import ctypes

# Binary Ninja components
import _binaryninjacore as core
import log


[docs]class FileAccessor(object):
[docs] def __init__(self): self._cb = core.BNFileAccessor() self._cb.context = 0 self._cb.getLength = self._cb.getLength.__class__(self._get_length) self._cb.read = self._cb.read.__class__(self._read) self._cb.write = self._cb.write.__class__(self._write)
def __len__(self): return self.get_length() def _get_length(self, ctxt): try: return self.get_length() except: log.log_error(traceback.format_exc()) return 0 def _read(self, ctxt, dest, offset, length): try: data = self.read(offset, length) if data is None: return 0 if len(data) > length: data = data[0:length] ctypes.memmove(dest, data, len(data)) return len(data) except: log.log_error(traceback.format_exc()) return 0 def _write(self, ctxt, offset, src, length): try: data = ctypes.create_string_buffer(length) ctypes.memmove(data, src, length) return self.write(offset, data.raw) except: log.log_error(traceback.format_exc()) return 0
[docs]class CoreFileAccessor(FileAccessor):
[docs] def __init__(self, accessor): self._cb.context = accessor.context self._cb.getLength = accessor.getLength self._cb.read = accessor.read self._cb.write = accessor.write
[docs] def get_length(self): return self._cb.getLength(self._cb.context)
[docs] def read(self, offset, length): data = ctypes.create_string_buffer(length) length = self._cb.read(self._cb.context, data, offset, length) return data.raw[0:length]
[docs] def write(self, offset, value): value = str(value) data = ctypes.create_string_buffer(value) return self._cb.write(self._cb.context, offset, data, len(value))