1#!/usr/bin/env python 2# Copyright (c) 2014 Google Inc. All rights reserved. 3# 4# Redistribution and use in source and binary forms, with or without 5# modification, are permitted provided that the following conditions are 6# met: 7# 8# * Redistributions of source code must retain the above copyright 9# notice, this list of conditions and the following disclaimer. 10# * Redistributions in binary form must reproduce the above 11# copyright notice, this list of conditions and the following disclaimer 12# in the documentation and/or other materials provided with the 13# distribution. 14# * Neither the name of Google Inc. nor the names of its 15# contributors may be used to endorse or promote products derived from 16# this software without specific prior written permission. 17# 18# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 30import re 31import sys 32import os 33 34 35def validate_injected_script(fileName): 36 f = open(fileName, "r") 37 lines = f.readlines() 38 f.close() 39 40 proto_functions = "|".join([ 41 # Array.prototype.* 42 "concat", "every", "filter", "forEach", "indexOf", "join", "lastIndexOf", "map", "pop", 43 "push", "reduce", "reduceRight", "reverse", "shift", "slice", "some", "sort", "splice", "toLocaleString", "toString", "unshift", 44 # Function.prototype.* 45 "apply", "bind", "call", "isGenerator", "toSource", 46 ]) 47 48 global_functions = "|".join([ 49 "eval", "uneval", "isFinite", "isNaN", "parseFloat", "parseInt", "decodeURI", "decodeURIComponent", 50 "encodeURI", "encodeURIComponent", "escape", "unescape", 51 ]) 52 53 # Black list: 54 # - Object.prototype.toString() 55 # - Array.prototype.* 56 # - Function.prototype.* 57 # - Math.* 58 # - Global functions 59 black_list_call_regex = re.compile(r"\bMath\.\w+\(|\.(toString|" + proto_functions + r")\(|[^\.]\b(" + global_functions + r")\(") 60 61 errors_found = False 62 for i, line in enumerate(lines): 63 for match in re.finditer(black_list_call_regex, line): 64 errors_found = True 65 print "ERROR: Black list function call in %s at line %02d column %02d: %s" % (os.path.basename(fileName), i + 1, match.start(), match.group(0)) 66 67 if not errors_found: 68 print "OK" 69 70 71def main(argv): 72 if len(argv) < 2: 73 print('ERROR: Usage: %s path/to/InjectedScriptSource.js' % argv[0]) 74 return 1 75 76 validate_injected_script(argv[1]) 77 78if __name__ == '__main__': 79 sys.exit(main(sys.argv)) 80