security/generate_mapfile.py
author Alastor Wu <alwu@mozilla.com>
Tue, 05 Mar 2019 02:06:22 +0000
changeset 516285 dc39216dfad387efd439083045062e323869a428
parent 500261 63248a593eae0a14ffc33ab0057cf41d3ecb8018
permissions -rw-r--r--
Bug 1530220 - part1 : allow some non-printalble keys as supported user gesture inputs to activate document. r=masayuki,cpearce a=lizzard `carriage return` and `space` are common keys which user might use to start media, so we should take account them as supported user gesture inputs. As their pseudo char code are zero, we have to check their key code in order to distinguish them from other controls keys such as shift, alt... Differential Revision: https://phabricator.services.mozilla.com/D21253

#!/usr/bin/env python

# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

# This script processes NSS .def files according to the rules defined in
# a comment at the top of each one. The files are used to define the
# exports from NSS shared libraries, with -DEFFILE on Windows, a linker
# script on Linux, or with -exported_symbols_list on OS X.
#
# The NSS build system processes them using a series of sed replacements,
# but the Mozilla build system is already running a Python script to generate
# the file so it's simpler to just do the replacement in Python.
#
# One difference between the NSS build system and Mozilla's is that
# Mozilla's supports building on Linux for Windows using MinGW. MinGW
# expects all lines containing ;+ removed and all ;- tokens removed.

import buildconfig


def main(output, input):
    is_darwin = buildconfig.substs['OS_ARCH'] == 'Darwin'
    is_mingw = "WINNT" == buildconfig.substs['OS_ARCH'] and \
        buildconfig.substs.get('GCC_USE_GNU_LD')

    with open(input, 'rb') as f:
        for line in f:
            line = line.rstrip()
            # On everything except MinGW, remove all lines containing ';-'
            if not is_mingw and ';-' in line:
                continue
            # On OS X, remove all lines containing ';+'
            if is_darwin and ';+' in line:
                continue
            # Remove the string ' DATA '.
            line = line.replace(' DATA ', '')
            # Remove the string ';+'
            if not is_mingw:
                line = line.replace(';+', '')
            # Remove the string ';;'
            line = line.replace(';;', '')
            # If a ';' is present, remove everything after it,
            # and on OS X, remove it as well.
            i = line.find(';')
            if i != -1:
                if is_darwin or is_mingw:
                    line = line[:i]
                else:
                    line = line[:i+1]
            # On OS X, symbols get an underscore in front.
            if line and is_darwin:
                output.write('_')
            output.write(line)
            output.write('\n')