383 lines
15 KiB
Python
383 lines
15 KiB
Python
#*
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#* GRUB -- GRand Unified Bootloader
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#* Copyright (C) 2009 Free Software Foundation, Inc.
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#*
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#* GRUB is free software: you can redistribute it and/or modify
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#* it under the terms of the GNU General Public License as published by
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#* the Free Software Foundation, either version 3 of the License, or
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#* (at your option) any later version.
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#*
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#* GRUB is distributed in the hope that it will be useful,
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#* but WITHOUT ANY WARRANTY; without even the implied warranty of
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#* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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#* GNU General Public License for more details.
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#*
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#* You should have received a copy of the GNU General Public License
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#* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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#*
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import re
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import sys
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import os
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import datetime
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if len (sys.argv) < 3:
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print ("Usage: %s SOURCE DESTINATION" % sys.argv[0])
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exit (0)
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indir = sys.argv[1]
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outdir = sys.argv[2]
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basedir = os.path.join (outdir, "lib/libgcrypt-grub")
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try:
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os.makedirs (basedir)
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except:
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print ("WARNING: %s already exists" % basedir)
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cipher_dir_in = os.path.join (indir, "cipher")
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cipher_dir_out = os.path.join (basedir, "cipher")
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try:
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os.makedirs (cipher_dir_out)
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except:
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print ("WARNING: %s already exists" % cipher_dir_out)
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cipher_files = os.listdir (cipher_dir_in)
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conf = open (os.path.join ("grub-core", "Makefile.gcry.def"), "w")
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conf.write ("AutoGen definitions Makefile.tpl;\n\n")
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confutil = open ("Makefile.utilgcry.def", "w")
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confutil.write ("AutoGen definitions Makefile.tpl;\n\n")
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confutil.write ("library = {\n");
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confutil.write (" name = libgrubgcry.a;\n");
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confutil.write (" cflags = '$(CFLAGS_GCRY)';\n");
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confutil.write (" cppflags = '$(CPPFLAGS_GCRY)';\n");
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confutil.write ("\n");
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chlog = ""
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modules = []
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# Strictly speaking CRC32/CRC24 work on bytes so this value should be 1
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# But libgcrypt uses 64. Let's keep the value for compatibility. Since
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# noone uses CRC24/CRC32 for HMAC this is no problem
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mdblocksizes = {"_gcry_digest_spec_crc32" : 64,
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"_gcry_digest_spec_crc32_rfc1510" : 64,
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"_gcry_digest_spec_crc24_rfc2440" : 64,
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"_gcry_digest_spec_md4" : 64,
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"_gcry_digest_spec_md5" : 64,
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"_gcry_digest_spec_rmd160" : 64,
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"_gcry_digest_spec_sha1" : 64,
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"_gcry_digest_spec_sha224" : 64,
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"_gcry_digest_spec_sha256" : 64,
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"_gcry_digest_spec_sha384" : 128,
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"_gcry_digest_spec_sha512" : 128,
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"_gcry_digest_spec_tiger" : 64,
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"_gcry_digest_spec_whirlpool" : 64}
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cryptolist = open (os.path.join (cipher_dir_out, "crypto.lst"), "w")
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# rijndael is the only cipher using aliases. So no need for mangling, just
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# hardcode it
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cryptolist.write ("RIJNDAEL: gcry_rijndael\n");
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cryptolist.write ("RIJNDAEL192: gcry_rijndael\n");
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cryptolist.write ("RIJNDAEL256: gcry_rijndael\n");
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cryptolist.write ("AES128: gcry_rijndael\n");
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cryptolist.write ("AES-128: gcry_rijndael\n");
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cryptolist.write ("AES-192: gcry_rijndael\n");
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cryptolist.write ("AES-256: gcry_rijndael\n");
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for cipher_file in cipher_files:
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infile = os.path.join (cipher_dir_in, cipher_file)
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outfile = os.path.join (cipher_dir_out, cipher_file)
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if cipher_file == "ChangeLog":
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continue
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chlognew = " * %s" % cipher_file
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if re.match ("(Manifest|Makefile\.am|ac\.c|cipher\.c|hash-common\.c|hmac-tests\.c|md\.c|pubkey\.c)$", cipher_file):
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chlog = "%s%s: Removed\n" % (chlog, chlognew)
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continue
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# Autogenerated files. Not even worth mentionning in ChangeLog
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if re.match ("Makefile\.in$", cipher_file):
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continue
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nch = False
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if re.match (".*\.[ch]$", cipher_file):
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isc = re.match (".*\.c$", cipher_file)
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f = open (infile, "r")
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fw = open (outfile, "w")
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fw.write ("/* This file was automatically imported with \n")
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fw.write (" import_gcry.py. Please don't modify it */\n")
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fw.write ("#include <grub/dl.h>\n")
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# Whole libgcrypt is distributed under GPLv3+ or compatible
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if isc:
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fw.write ("GRUB_MOD_LICENSE (\"GPLv3+\");\n")
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ciphernames = []
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mdnames = []
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hold = False
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skip = False
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skip2 = False
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ismd = False
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iscryptostart = False
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iscomma = False
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isglue = False
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skip_statement = False
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if isc:
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modname = cipher_file [0:len(cipher_file) - 2]
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if re.match (".*-glue$", modname):
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modname = modname.replace ("-glue", "")
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isglue = True
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modname = "gcry_%s" % modname
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for line in f:
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if skip_statement:
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if not re.search (";", line) is None:
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skip_statement = False
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continue
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if skip:
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if line[0] == "}":
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skip = False
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continue
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if skip2:
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if not re.search (" *};", line) is None:
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skip2 = False
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continue
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if iscryptostart:
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s = re.search (" *\"([A-Z0-9_a-z]*)\"", line)
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if not s is None:
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sg = s.groups()[0]
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cryptolist.write (("%s: %s\n") % (sg, modname))
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iscryptostart = False
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if ismd:
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if not re.search (" *};", line) is None:
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if not mdblocksizes.has_key (mdname):
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print ("ERROR: Unknown digest blocksize: %s\n" % mdname)
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exit (1)
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if not iscomma:
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fw.write (" ,\n")
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fw.write (" .blocksize = %s\n" % mdblocksizes [mdname])
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ismd = False
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iscomma = not re.search (",$", line) is None
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# Used only for selftests.
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m = re.match ("(static byte|static unsigned char) (weak_keys_chksum)\[[0-9]*\] =", line)
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if not m is None:
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skip = True
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fname = m.groups ()[1]
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chmsg = "(%s): Removed." % fname
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if nch:
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chlognew = "%s\n %s" % (chlognew, chmsg)
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else:
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chlognew = "%s %s" % (chlognew, chmsg)
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nch = True
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continue
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if hold:
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hold = False
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# We're optimising for size.
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if not re.match ("(run_selftests|selftest|_gcry_aes_c.._..c|_gcry_[a-z0-9]*_hash_buffer|tripledes_set2keys|do_tripledes_set_extra_info)", line) is None:
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skip = True
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fname = re.match ("[a-zA-Z0-9_]*", line).group ()
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chmsg = "(%s): Removed." % fname
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if nch:
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chlognew = "%s\n %s" % (chlognew, chmsg)
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else:
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chlognew = "%s %s" % (chlognew, chmsg)
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nch = True
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continue
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else:
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fw.write (holdline)
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m = re.match ("#include <.*>", line)
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if not m is None:
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chmsg = "Removed including of %s" % \
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m.group () [len ("#include <"):len (m.group ()) - 1]
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if nch:
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chlognew = "%s\n %s" % (chlognew, chmsg)
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else:
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chlognew = "%s: %s" % (chlognew, chmsg)
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nch = True
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continue
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m = re.match ("gcry_cipher_spec_t", line)
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if isc and not m is None:
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assert (not iscryptostart)
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ciphername = line [len ("gcry_cipher_spec_t"):].strip ()
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ciphername = re.match("[a-zA-Z0-9_]*",ciphername).group ()
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ciphernames.append (ciphername)
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iscryptostart = True
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m = re.match ("gcry_md_spec_t", line)
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if isc and not m is None:
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assert (not ismd)
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assert (not iscryptostart)
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mdname = line [len ("gcry_md_spec_t"):].strip ()
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mdname = re.match("[a-zA-Z0-9_]*",mdname).group ()
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mdnames.append (mdname)
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ismd = True
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iscryptostart = True
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m = re.match ("static const char \*selftest.*;$", line)
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if not m is None:
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fname = line[len ("static const char \*"):]
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fname = re.match ("[a-zA-Z0-9_]*", fname).group ()
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chmsg = "(%s): Removed declaration." % fname
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if nch:
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chlognew = "%s\n %s" % (chlognew, chmsg)
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else:
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chlognew = "%s %s" % (chlognew, chmsg)
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nch = True
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continue
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m = re.match ("(static const char( |)\*|static gpg_err_code_t|void|static int|static gcry_err_code_t)$", line)
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if not m is None:
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hold = True
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holdline = line
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continue
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m = re.match ("static int tripledes_set2keys \(.*\);", line)
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if not m is None:
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continue
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m = re.match ("static int tripledes_set2keys \(", line)
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if not m is None:
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skip_statement = True
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continue
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m = re.match ("cipher_extra_spec_t", line)
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if isc and not m is None:
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skip2 = True
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fname = line[len ("cipher_extra_spec_t "):]
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fname = re.match ("[a-zA-Z0-9_]*", fname).group ()
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chmsg = "(%s): Removed." % fname
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if nch:
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chlognew = "%s\n %s" % (chlognew, chmsg)
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else:
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chlognew = "%s %s" % (chlognew, chmsg)
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nch = True
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continue
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m = re.match ("md_extra_spec_t", line)
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if isc and not m is None:
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skip2 = True
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fname = line[len ("md_extra_spec_t "):]
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fname = re.match ("[a-zA-Z0-9_]*", fname).group ()
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chmsg = "(%s): Removed." % fname
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if nch:
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chlognew = "%s\n %s" % (chlognew, chmsg)
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else:
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chlognew = "%s %s" % (chlognew, chmsg)
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nch = True
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continue
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fw.write (line)
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if len (ciphernames) > 0 or len (mdnames) > 0:
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if isglue:
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modfiles = "lib/libgcrypt-grub/cipher/%s lib/libgcrypt-grub/cipher/%s" \
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% (cipher_file, cipher_file.replace ("-glue.c", ".c"))
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else:
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modfiles = "lib/libgcrypt-grub/cipher/%s" % cipher_file
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modules.append (modname)
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chmsg = "(GRUB_MOD_INIT(%s)): New function\n" % modname
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if nch:
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chlognew = "%s\n %s" % (chlognew, chmsg)
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else:
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chlognew = "%s%s" % (chlognew, chmsg)
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nch = True
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fw.write ("\n\nGRUB_MOD_INIT(%s)\n" % modname)
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fw.write ("{\n")
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for ciphername in ciphernames:
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chmsg = "Register cipher %s" % ciphername
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chlognew = "%s\n %s" % (chlognew, chmsg)
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fw.write (" grub_cipher_register (&%s);\n" % ciphername)
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for mdname in mdnames:
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chmsg = "Register digest %s" % mdname
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chlognew = "%s\n %s" % (chlognew, chmsg)
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fw.write (" grub_md_register (&%s);\n" % mdname)
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fw.write ("}")
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chmsg = "(GRUB_MOD_FINI(%s)): New function\n" % modname
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chlognew = "%s\n %s" % (chlognew, chmsg)
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fw.write ("\n\nGRUB_MOD_FINI(%s)\n" % modname)
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fw.write ("{\n")
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for ciphername in ciphernames:
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chmsg = "Unregister cipher %s" % ciphername
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chlognew = "%s\n %s" % (chlognew, chmsg)
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fw.write (" grub_cipher_unregister (&%s);\n" % ciphername)
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for mdname in mdnames:
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chmsg = "Unregister MD %s" % mdname
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chlognew = "%s\n %s" % (chlognew, chmsg)
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fw.write (" grub_md_unregister (&%s);\n" % mdname)
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fw.write ("}\n")
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conf.write ("module = {\n")
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conf.write (" name = %s;\n" % modname)
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for src in modfiles.split():
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conf.write (" common = %s;\n" % src)
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confutil.write (" common = grub-core/%s;\n" % src)
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conf.write (" cflags = '$(CFLAGS_GCRY)';\n");
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conf.write (" cppflags = '$(CPPFLAGS_GCRY)';\n");
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conf.write ("};\n\n")
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elif isc and cipher_file != "camellia.c":
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print ("WARNING: C file isn't a module: %s" % cipher_file)
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f.close ()
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fw.close ()
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if nch:
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chlog = "%s%s\n" % (chlog, chlognew)
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continue
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chlog = "%s%sSkipped unknown file\n" % (chlog, chlognew)
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print ("WARNING: unknown file %s" % cipher_file)
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cryptolist.close ()
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chlog = "%s * crypto.lst: New file.\n" % chlog
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outfile = os.path.join (cipher_dir_out, "types.h")
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fw=open (outfile, "w")
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fw.write ("#include <grub/types.h>\n")
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fw.write ("#include <cipher_wrap.h>\n")
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chlog = "%s * types.h: New file.\n" % chlog
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fw.close ()
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outfile = os.path.join (cipher_dir_out, "memory.h")
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fw=open (outfile, "w")
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fw.write ("#include <cipher_wrap.h>\n")
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chlog = "%s * memory.h: New file.\n" % chlog
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fw.close ()
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outfile = os.path.join (cipher_dir_out, "cipher.h")
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fw=open (outfile, "w")
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fw.write ("#include <grub/crypto.h>\n")
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fw.write ("#include <cipher_wrap.h>\n")
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chlog = "%s * cipher.h: Likewise.\n" % chlog
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fw.close ()
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outfile = os.path.join (cipher_dir_out, "g10lib.h")
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fw=open (outfile, "w")
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fw.write ("#include <cipher_wrap.h>\n")
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chlog = "%s * g10lib.h: Likewise.\n" % chlog
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fw.close ()
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infile = os.path.join (cipher_dir_in, "ChangeLog")
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outfile = os.path.join (cipher_dir_out, "ChangeLog")
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conf.close ();
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initfile = open (os.path.join (cipher_dir_out, "init.c"), "w")
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for module in modules:
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initfile.write ("extern void grub_%s_init (void);\n" % module)
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initfile.write ("extern void grub_%s_fini (void);\n" % module)
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initfile.write ("\n")
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initfile.write ("void\n")
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initfile.write ("grub_gcry_init_all (void)\n")
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initfile.write ("{\n")
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for module in modules:
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initfile.write (" grub_%s_init ();\n" % module)
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initfile.write ("}\n")
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initfile.write ("\n")
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initfile.write ("void\n")
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initfile.write ("grub_gcry_fini_all (void)\n")
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initfile.write ("{\n")
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for module in modules:
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initfile.write (" grub_%s_fini ();\n" % module)
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initfile.write ("}\n")
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initfile.close ()
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confutil.write (" common = grub-core/lib/libgcrypt-grub/cipher/init.c;\n")
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confutil.write ("};\n");
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confutil.close ();
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f=open (infile, "r")
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fw=open (outfile, "w")
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dt = datetime.date.today ()
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fw.write ("%04d-%02d-%02d Automatic import tool\n" % \
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(dt.year,dt.month, dt.day))
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fw.write ("\n")
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fw.write (" Imported ciphers to GRUB\n")
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fw.write ("\n")
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fw.write (chlog)
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fw.write ("\n")
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for line in f:
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fw.write (line)
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f.close ()
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fw.close ()
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