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d0c-s4vage / pfp

pfp - Python Format Parser - a python-based 010 Editor template interpreter
MIT License
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parsing SWFTemplate error num must be a multiple of 8 #31

Open ghost opened 8 years ago

ghost commented 8 years ago

When I attempt to pfp.parse a SWF with the SWFTemplate, i get an error message on line 1001: http://www.sweetscape.com/010editor/templates/files/SWFTemplate.bt Line 1001: if (StateFillStyle0) { int FillStyle0 : FillBits; ... Line 1012: ubyte NumFillBits : 4; Line 1014: FillBits = NumFillBits; Error num must be a multiple of 8

However, later in the file FillBits is defined. Also, when I open 010editor and run the template against the swf file it is applied successfully with no errors The SWF in question is at: http://www.bio.davidson.edu/people/macampbell/111/memb-swf/membranes.swf

d0c-s4vage commented 4 years ago

Just in case the original site goes down:

membranes.zip

d0c-s4vage commented 4 years ago

I think the original error that was reported was directly related to bit fields. It is crashing in a different way for me now:

pfp -t tests/templates/SWFTemplate.bt ~/Downloads/membranes.swf
Traceback (most recent call last):
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 913, in _run
    res = self._handle_node(self._ast, None, None, self._stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1065, in _handle_file_ast
    self._handle_node(child, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1287, in _handle_decl
    field._pfp__init(stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 83, in _pfp__init
    self._pfp__interp._handle_node(decls, ctxt=self, stream=stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1584, in _handle_struct_decls
    self._handle_node(decl, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 2231, in _handle_if
    return self._handle_node(node.iftrue, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 2100, in _handle_compound
    self._handle_node(child, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 2307, in _handle_do_while
    self._handle_node(node.stmt, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 2100, in _handle_compound
    self._handle_node(child, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1287, in _handle_decl
    field._pfp__init(stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 83, in _pfp__init
    self._pfp__interp._handle_node(decls, ctxt=self, stream=stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1584, in _handle_struct_decls
    self._handle_node(decl, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 2394, in _handle_switch
    exec_case(idx, cases)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 2343, in exec_case
    self._handle_node(stmt, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1287, in _handle_decl
    field._pfp__init(stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 83, in _pfp__init
    self._pfp__interp._handle_node(decls, ctxt=self, stream=stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1584, in _handle_struct_decls
    self._handle_node(decl, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1173, in _handle_decl
    and prev.__class__.width == field.width
AttributeError: type object 'LINESTYLEARRAY' has no attribute 'width'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/james/__ws__/dev/pfp/venv3/bin/pfp", line 11, in <module>
    load_entry_point('pfp', 'console_scripts', 'pfp')()
  File "/home/james/__ws__/dev/pfp/pfp/__main__.py", line 55, in main
    keep_successful=args.keep,
  File "/home/james/__ws__/dev/pfp/pfp/__init__.py", line 91, in parse
    printf=printf,
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 736, in parse
    res = self._run(keep_successful)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 940, in _run
    traceback,
  File "/home/james/__ws__/dev/pfp/venv3/lib/python3.6/site-packages/six.py", line 692, in reraise
    raise value.with_traceback(tb)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 913, in _run
    res = self._handle_node(self._ast, None, None, self._stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1065, in _handle_file_ast
    self._handle_node(child, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1287, in _handle_decl
    field._pfp__init(stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 83, in _pfp__init
    self._pfp__interp._handle_node(decls, ctxt=self, stream=stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1584, in _handle_struct_decls
    self._handle_node(decl, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 2231, in _handle_if
    return self._handle_node(node.iftrue, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 2100, in _handle_compound
    self._handle_node(child, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 2307, in _handle_do_while
    self._handle_node(node.stmt, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 2100, in _handle_compound
    self._handle_node(child, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1287, in _handle_decl
    field._pfp__init(stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 83, in _pfp__init
    self._pfp__interp._handle_node(decls, ctxt=self, stream=stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1584, in _handle_struct_decls
    self._handle_node(decl, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 2394, in _handle_switch
    exec_case(idx, cases)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 2343, in exec_case
    self._handle_node(stmt, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1287, in _handle_decl
    field._pfp__init(stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 83, in _pfp__init
    self._pfp__interp._handle_node(decls, ctxt=self, stream=stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1584, in _handle_struct_decls
    self._handle_node(decl, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1022, in _handle_node
    res = self._node_switch[node.__class__](node, scope, ctxt, stream)
  File "/home/james/__ws__/dev/pfp/pfp/interp.py", line 1173, in _handle_decl
    and prev.__class__.width == field.width
pfp.errors.PfpError: AttributeError: type object 'LINESTYLEARRAY' has no attribute 'width'
Exception at tests/templates/SWFTemplate.bt:1078
d0c-s4vage commented 4 years ago

Running with pdb:

$> python -m pdb pfp/__main__.py -t tests/templates/SWFTemplate.bt ~/Downloads/membranes.swf
...
> /home/james/__ws__/dev/pfp/pfp/interp.py(1173)_handle_decl()
-> and prev.__class__.width == field.width
(Pdb) field
<class 'pfp.fields.UChar'>
(Pdb) field.width
1
(Pdb) prev
<pfp.interp.LINESTYLEARRAY object at 0x7f1f474f59e8>
(Pdb) prev.__class__
<class 'pfp.interp.LINESTYLEARRAY'>
(Pdb) prev.__class__.width
*** AttributeError: type object 'LINESTYLEARRAY' has no attribute 'width'