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Diffstat (limited to 'src/common/get_mozilla_ciphers.py')
-rw-r--r-- | src/common/get_mozilla_ciphers.py | 210 |
1 files changed, 0 insertions, 210 deletions
diff --git a/src/common/get_mozilla_ciphers.py b/src/common/get_mozilla_ciphers.py deleted file mode 100644 index 0636eb365..000000000 --- a/src/common/get_mozilla_ciphers.py +++ /dev/null @@ -1,210 +0,0 @@ -#!/usr/bin/python -# coding=utf-8 -# Copyright 2011, The Tor Project, Inc -# original version by Arturo Filastò -# See LICENSE for licensing information - -# This script parses Firefox and OpenSSL sources, and uses this information -# to generate a ciphers.inc file. -# -# It takes two arguments: the location of a firefox source directory, and the -# location of an openssl source directory. - -import os -import re -import sys - -if len(sys.argv) != 3: - print >>sys.stderr, "Syntax: get_mozilla_ciphers.py <firefox-source-dir> <openssl-source-dir>" - sys.exit(1) - -ff_root = sys.argv[1] -ossl_root = sys.argv[2] - -def ff(s): - return os.path.join(ff_root, s) -def ossl(s): - return os.path.join(ossl_root, s) - -##### -# Read the cpp file to understand what Ciphers map to what name : -# Make "ciphers" a map from name used in the javascript to a cipher macro name -fileA = open(ff('security/manager/ssl/src/nsNSSComponent.cpp'),'r') - -# The input format is a file containing exactly one section of the form: -# static CipherPref CipherPrefs[] = { -# {"name", MACRO_NAME}, // comment -# ... -# {NULL, 0} -# } - -inCipherSection = False -cipherLines = [] -for line in fileA: - if line.startswith('static const CipherPref sCipherPrefs[]'): - # Get the starting boundary of the Cipher Preferences - inCipherSection = True - elif inCipherSection: - line = line.strip() - if line.startswith('{ nullptr, 0}'): - # At the ending boundary of the Cipher Prefs - break - else: - cipherLines.append(line) -fileA.close() - -# Parse the lines and put them into a dict -ciphers = {} -cipher_pref = {} -key_pending = None -for line in cipherLines: - m = re.search(r'^{\s*\"([^\"]+)\",\s*(\S+)\s*(?:,\s*(true|false))?\s*}', line) - if m: - assert not key_pending - key,value,enabled = m.groups() - if enabled == 'true': - ciphers[key] = value - cipher_pref[value] = key - continue - m = re.search(r'^{\s*\"([^\"]+)\",', line) - if m: - assert not key_pending - key_pending = m.group(1) - continue - m = re.search(r'^\s*(\S+)(?:,\s*(true|false))?\s*}', line) - if m: - assert key_pending - key = key_pending - value,enabled = m.groups() - key_pending = None - if enabled == 'true': - ciphers[key] = value - cipher_pref[value] = key - -#### -# Now find the correct order for the ciphers -fileC = open(ff('security/nss/lib/ssl/ssl3con.c'), 'r') -firefox_ciphers = [] -inEnum=False -for line in fileC: - if not inEnum: - if "ssl3CipherSuiteCfg cipherSuites[" in line: - inEnum = True - continue - - if line.startswith("};"): - break - - m = re.match(r'^\s*\{\s*([A-Z_0-9]+),', line) - if m: - firefox_ciphers.append(m.group(1)) - -fileC.close() - -##### -# Read the JS file to understand what ciphers are enabled. The format is -# pref("name", true/false); -# Build a map enabled_ciphers from javascript name to "true" or "false", -# and an (unordered!) list of the macro names for those ciphers that are -# enabled. -fileB = open(ff('netwerk/base/public/security-prefs.js'), 'r') - -enabled_ciphers = {} -for line in fileB: - m = re.match(r'pref\(\"([^\"]+)\"\s*,\s*(\S*)\s*\)', line) - if not m: - continue - key, val = m.groups() - if key.startswith("security.ssl3"): - enabled_ciphers[key] = val -fileB.close() - -used_ciphers = [] -for k, v in enabled_ciphers.items(): - if v == "true": - used_ciphers.append(ciphers[k]) - -#oSSLinclude = ('/usr/include/openssl/ssl3.h', '/usr/include/openssl/ssl.h', -# '/usr/include/openssl/ssl2.h', '/usr/include/openssl/ssl23.h', -# '/usr/include/openssl/tls1.h') -oSSLinclude = ('ssl/ssl3.h', 'ssl/ssl.h', - 'ssl/ssl2.h', 'ssl/ssl23.h', - 'ssl/tls1.h') - -##### -# This reads the hex code for the ciphers that are used by firefox. -# sslProtoD is set to a map from macro name to macro value in sslproto.h; -# cipher_codes is set to an (unordered!) list of these hex values. -sslProto = open(ff('security/nss/lib/ssl/sslproto.h'), 'r') -sslProtoD = {} - -for line in sslProto: - m = re.match('#define\s+(\S+)\s+(\S+)', line) - if m: - key, value = m.groups() - sslProtoD[key] = value -sslProto.close() - -cipher_codes = [] -for x in used_ciphers: - cipher_codes.append(sslProtoD[x].lower()) - -#### -# Now read through all the openssl include files, and try to find the openssl -# macro names for those files. -openssl_macro_by_hex = {} -all_openssl_macros = {} -for fl in oSSLinclude: - fp = open(ossl(fl), 'r') - for line in fp.readlines(): - m = re.match('#define\s+(\S+)\s+(\S+)', line) - if m: - value,key = m.groups() - if key.startswith('0x') and "_CK_" in value: - key = key.replace('0x0300','0x').lower() - #print "%s %s" % (key, value) - openssl_macro_by_hex[key] = value - all_openssl_macros[value]=key - fp.close() - -# Now generate the output. -print """\ -/* This is an include file used to define the list of ciphers clients should - * advertise. Before including it, you should define the CIPHER and XCIPHER - * macros. - * - * This file was automatically generated by get_mozilla_ciphers.py. - */""" -# Go in order by the order in CipherPrefs -for firefox_macro in firefox_ciphers: - - try: - js_cipher_name = cipher_pref[firefox_macro] - except KeyError: - # This one has no javascript preference. - continue - - # The cipher needs to be enabled in security-prefs.js - if enabled_ciphers.get(js_cipher_name, 'false') != 'true': - continue - - hexval = sslProtoD[firefox_macro].lower() - - try: - openssl_macro = openssl_macro_by_hex[hexval.lower()] - openssl_macro = openssl_macro.replace("_CK_", "_TXT_") - if openssl_macro not in all_openssl_macros: - raise KeyError() - format = {'hex':hexval, 'macro':openssl_macro, 'note':""} - except KeyError: - # openssl doesn't have a macro for this. - format = {'hex':hexval, 'macro':firefox_macro, - 'note':"/* No openssl macro found for "+hexval+" */\n"} - - res = """\ -%(note)s#ifdef %(macro)s - CIPHER(%(hex)s, %(macro)s) -#else - XCIPHER(%(hex)s, %(macro)s) -#endif""" % format - print res |