00b67f09dd
Also known as ISC bind. This import adds utilities such as host(1), dig(1), and nslookup(1), as well as many other tools and libraries. Change-Id: I035ca46e64f1965d57019e773f4ff0ef035e4aa3
201 lines
6.2 KiB
Perl
201 lines
6.2 KiB
Perl
#!/bin/bin/perl -w
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#
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# Copyright (C) 2006, 2007, 2012 Internet Systems Consortium, Inc. ("ISC")
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#
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# Permission to use, copy, modify, and/or distribute this software for any
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# purpose with or without fee is hereby granted, provided that the above
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# copyright notice and this permission notice appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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# AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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# OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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# PERFORMANCE OF THIS SOFTWARE.
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# Id: spnego_asn1.pl,v 1.4 2007/06/19 23:47:16 tbox Exp
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# Our SPNEGO implementation uses some functions generated by the
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# Heimdal ASN.1 compiler, which this script then whacks a bit to make
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# them work properly in this stripped down implementation. We don't
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# want to require our users to have a copy of the compiler, so we ship
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# the output of this script, but we need to keep the script around in
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# any case to cope with future changes to the SPNEGO ASN.1 code, so we
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# might as well supply the script for users who want it.
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# Overall plan: run the ASN.1 compiler, run each of its output files
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# through indent, fix up symbols and whack everything to be static.
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# We use indent for two reasons: (1) to whack the Heimdal compiler's
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# output into something closer to ISC's coding standard, and (2) to
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# make it easier for this script to parse the result.
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# Output from this script is C code which we expect to be #included
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# into another C file, which is why everything generated by this
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# script is marked "static". The intent is to minimize the number of
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# extern symbols exported by the SPNEGO implementation, to avoid
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# potential conflicts with the GSSAPI libraries.
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###
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# Filename of the ASN.1 specification. Hardcoded for the moment
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# since this script is intended for compiling exactly one module.
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my $asn1_source = $ENV{ASN1_SOURCE} || "spnego.asn1";
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# Heimdal ASN.1 compiler. This script was written using the version
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# from Heimdal 0.7.1. To build this, download a copy of
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# heimdal-0.7.1.tar.gz, configure and build with the default options,
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# then look for the compiler in heimdal-0.7.1/lib/asn1/asn1_compile.
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my $asn1_compile = $ENV{ASN1_COMPILE} || "asn1_compile";
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# BSD indent program. This script was written using the version of
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# indent that comes with FreeBSD 4.11-STABLE. The GNU project, as
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# usual, couldn't resist the temptation to monkey with indent's
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# command line syntax, so this probably won't work with GNU indent.
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my $indent = $ENV{INDENT} || "indent";
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###
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# Step 1: run the compiler. Input is the ASN.1 file. Outputs are a
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# header file (name specified on command line without the .h suffix),
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# a file called "asn1_files" listing the names of the other output
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# files, and a set of files containing C code generated by the
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# compiler for each data type that the compiler found.
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if (! -r $asn1_source || system($asn1_compile, $asn1_source, "asn1")) {
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die("Couldn't compile ASN.1 source file $asn1_source\n");
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}
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my @files = ("asn1.h");
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open(F, "asn1_files")
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or die("Couldn't open asn1_files: $!\n");
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push(@files, split)
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while (<F>);
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close(F);
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unlink("asn1_files");
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###
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# Step 2: generate header block.
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print(q~/*
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* Copyright (C) 2006 Internet Systems Consortium, Inc. ("ISC")
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* Id: spnego_asn1.pl,v 1.4 2007/06/19 23:47:16 tbox Exp */
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/*! \file
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* \brief Method routines generated from SPNEGO ASN.1 module.
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* See spnego_asn1.pl for details. Do not edit.
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*/
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~);
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###
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# Step 3: read and process each generated file, then delete it.
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my $output;
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for my $file (@files) {
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my $is_static = 0;
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system($indent, "-di1", "-ldi1", $file) == 0
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or die("Couldn't indent $file");
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unlink("$file.BAK");
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open(F, $file)
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or die("Couldn't open $file: $!");
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while (<F>) {
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# Symbol name fixups
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s/heim_general_string/general_string/g;
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s/heim_octet_string/octet_string/g;
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s/heim_oid/oid/g;
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s/heim_utf8_string/utf8_string/g;
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# Convert all externs to statics
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if (/^static/) {
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$is_static = 1;
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}
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if (!/^typedef/ &&
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!$is_static &&
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/^[A-Za-z_][0-9A-Za-z_]*[ \t]*($|[^:0-9A-Za-z_])/) {
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$_ = "static " . $_;
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$is_static = 1;
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}
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if (/[{};]/) {
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$is_static = 0;
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}
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# Suppress file inclusion, pass anything else through
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if (!/#include/) {
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$output .= $_;
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}
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}
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close(F);
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unlink($file);
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}
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# Step 4: Delete unused stuff to avoid code bloat and compiler warnings.
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my @unused_functions = qw(ContextFlags2int
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int2ContextFlags
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asn1_ContextFlags_units
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length_NegTokenInit
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copy_NegTokenInit
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length_NegTokenResp
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copy_NegTokenResp
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length_MechTypeList
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length_MechType
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copy_MechTypeList
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length_ContextFlags
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copy_ContextFlags
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copy_MechType);
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$output =~ s<^static [^\n]+\n$_\(.+?^}></* unused function: $_ */\n>ms
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foreach (@unused_functions);
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$output =~ s<^static .+$_\(.*\);$></* unused declaration: $_ */>m
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foreach (@unused_functions);
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$output =~ s<^static struct units ContextFlags_units\[\].+?^};>
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</* unused variable: ContextFlags_units */>ms;
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$output =~ s<^static int asn1_NegotiationToken_dummy_holder = 1;>
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</* unused variable: asn1_NegotiationToken_dummy_holder */>ms;
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$output =~ s<^static void\nfree_ContextFlags\(ContextFlags \* data\)\n{\n>
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<$&\t(void)data;\n>ms;
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# Step 5: Write the result.
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print($output);
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