blob: b1fc1228f07a277fc31e20676cabd911d2c86396 [file] [log] [blame]
#!/usr/bin/env python3
# Copyright (c) 2012 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Help maintaining DLL import lists."""
import ast
import optparse
import re
import sys
_EXPORT_RE = re.compile(
^\s*(?P<ordinal>[0-9]+) # The ordinal field.
\s+(?P<hint>[0-9A-F]+) # The hint field.
\s(?P<rva>........) # The RVA field.
\s+(?P<name>[^ ]+) # And finally the name we're really after.
""", re.VERBOSE)
_USAGE = r"""\
Usage: %prog [options] [master-file]
This script filters a list of exports from a DLL, generated from something
like the following command line:
C:\> dumpbin /exports user32.dll
against a master list of imports built from e.g.
C:\> dumpbin /exports user32.lib
The point of this is to trim non-public exports from the list, and to
normalize the names to their stdcall-mangled form for the generation of
import libraries.
Note that the export names from the latter incanatation are stdcall-mangled,
e.g. they are suffixed with "@" and the number of argument bytes to the
def _ReadMasterFile(master_file):
# Slurp the master file.
with open(master_file) as f:
master_exports = ast.literal_eval(
master_mapping = {}
for export in master_exports:
name = export.split('@')[0]
master_mapping[name] = export
return master_mapping
def main():
parser = optparse.OptionParser(usage=_USAGE)
help='Reverse the matching, e.g. return the functions '
'in the master list that aren\'t in the input.')
options, args = parser.parse_args()
if len(args) != 1:
parser.error('Must provide a master file.')
master_mapping = _ReadMasterFile(args[0])
found_exports = []
for line in sys.stdin:
match = _EXPORT_RE.match(line)
if match:
export_name = master_mapping.get('name'), None)
if export_name:
if options.reverse:
# Invert the found_exports list.
found_exports = set(master_mapping.values()) - set(found_exports)
# Sort the found exports for tidy output.
return 0
if __name__ == '__main__':