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#!/usr/bin/python# -*- coding: utf-8 -*-import sysimport reREG_LINE_GPERF = re.compile('#line .+gperf"')REG_HASH_FUNC = re.compile('hash\s*\(register\s+const\s+char\s*\*\s*str,\s*register\s+unsigned\s+int\s+len\s*\)')REG_STR_AT = re.compile('str\[(\d+)\]')REG_UNFOLD_KEY = re.compile('unicode_unfold_key\s*\(register\s+const\s+char\s*\*\s*str,\s*register\s+unsigned\s+int\s+len\)')REG_ENTRY = re.compile('\{".+?",\s*/\*(.+?)\*/\s*(-?\d+),\s*(\d)\}')REG_EMPTY_ENTRY = re.compile('\{"",\s*(-?\d+),\s*(\d)\}')REG_IF_LEN = re.compile('if\s*\(\s*len\s*<=\s*MAX_WORD_LENGTH.+')REG_GET_HASH = re.compile('(?:register\s+)?(?:unsigned\s+)?int\s+key\s*=\s*hash\s*\(str,\s*len\);')REG_GET_CODE = re.compile('(?:register\s+)?const\s+char\s*\*\s*s\s*=\s*wordlist\[key\]\.name;')REG_CODE_CHECK = re.compile('if\s*\(\*str\s*==\s*\*s\s*&&\s*!strncmp.+\)')def parse_line(s): s = s.rstrip() r = re.sub(REG_LINE_GPERF, '', s) if r != s: return r r = re.sub(REG_HASH_FUNC, 'hash(OnigCodePoint codes[])', s) if r != s: return r r = re.sub(REG_STR_AT, 'onig_codes_byte_at(codes, \\1)', s) if r != s: return r r = re.sub(REG_UNFOLD_KEY, 'unicode_unfold_key(OnigCodePoint code)', s) if r != s: return r r = re.sub(REG_ENTRY, '{\\1, \\2, \\3}', s) if r != s: return r r = re.sub(REG_EMPTY_ENTRY, '{0xffffffff, \\1, \\2}', s) if r != s: return r r = re.sub(REG_IF_LEN, 'if (0 == 0)', s) if r != s: return r r = re.sub(REG_GET_HASH, 'int key = hash(&code);', s) if r != s: return r r = re.sub(REG_GET_CODE, 'OnigCodePoint gcode = wordlist[key].code;', s) if r != s: return r # BUG: CWE-787 Out-of-bounds Write # r = re.sub(REG_CODE_CHECK, 'if (code == gcode)', s) # FIXED: r = re.sub(REG_CODE_CHECK, 'if (code == gcode && wordlist[key].index >= 0)', s) if r != s: return r return sdef parse_file(f): print "/* This file was converted by gperf_unfold_key_conv.py\n from gperf output file. */" line = f.readline() while line: s = parse_line(line) print s line = f.readline()# mainparse_file(sys.stdin) |