Script generation of query_config.c file
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Andres Amaya Garcia
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2 changed files with 175 additions and 0 deletions
113
scripts/data_files/query_config.fmt
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113
scripts/data_files/query_config.fmt
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/*
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* Query configuration information
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*
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* Copyright (C) 2018, Arm Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This file is part of Mbed TLS (https://tls.mbed.org)
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*/
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#if !defined(MBEDTLS_CONFIG_FILE)
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#include "mbedtls/config.h"
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#else
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#include MBEDTLS_CONFIG_FILE
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#endif
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#if defined(MBEDTLS_PLATFORM_C)
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#include "mbedtls/platform.h"
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#else
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#define mbedtls_printf printf
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#endif /* MBEDTLS_PLATFORM_C */
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/* Include all the headers with public APIs in case they modify any configs */
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#include "mbedtls/aes.h"
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#include "mbedtls/aesni.h"
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#include "mbedtls/arc4.h"
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#include "mbedtls/aria.h"
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#include "mbedtls/asn1.h"
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#include "mbedtls/asn1write.h"
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#include "mbedtls/base64.h"
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#include "mbedtls/bignum.h"
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#include "mbedtls/blowfish.h"
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#include "mbedtls/camellia.h"
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#include "mbedtls/ccm.h"
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#include "mbedtls/certs.h"
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#include "mbedtls/chacha20.h"
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#include "mbedtls/chachapoly.h"
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#include "mbedtls/cipher.h"
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#include "mbedtls/cmac.h"
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#include "mbedtls/ctr_drbg.h"
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#include "mbedtls/debug.h"
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#include "mbedtls/des.h"
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#include "mbedtls/dhm.h"
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#include "mbedtls/ecdh.h"
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#include "mbedtls/ecdsa.h"
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#include "mbedtls/ecjpake.h"
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#include "mbedtls/ecp.h"
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#include "mbedtls/entropy.h"
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#include "mbedtls/entropy_poll.h"
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#include "mbedtls/error.h"
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#include "mbedtls/gcm.h"
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#include "mbedtls/havege.h"
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#include "mbedtls/hkdf.h"
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#include "mbedtls/hmac_drbg.h"
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#include "mbedtls/md.h"
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#include "mbedtls/md2.h"
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#include "mbedtls/md4.h"
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#include "mbedtls/md5.h"
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#include "mbedtls/memory_buffer_alloc.h"
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#include "mbedtls/net_sockets.h"
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#include "mbedtls/nist_kw.h"
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#include "mbedtls/oid.h"
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#include "mbedtls/padlock.h"
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#include "mbedtls/pem.h"
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#include "mbedtls/pk.h"
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#include "mbedtls/pkcs11.h"
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#include "mbedtls/pkcs12.h"
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#include "mbedtls/pkcs5.h"
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#include "mbedtls/platform_time.h"
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#include "mbedtls/platform_util.h"
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#include "mbedtls/poly1305.h"
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#include "mbedtls/ripemd160.h"
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#include "mbedtls/rsa.h"
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#include "mbedtls/sha1.h"
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#include "mbedtls/sha256.h"
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#include "mbedtls/sha512.h"
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#include "mbedtls/ssl.h"
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#include "mbedtls/ssl_cache.h"
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#include "mbedtls/ssl_ciphersuites.h"
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#include "mbedtls/ssl_cookie.h"
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#include "mbedtls/ssl_internal.h"
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#include "mbedtls/ssl_ticket.h"
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#include "mbedtls/threading.h"
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#include "mbedtls/timing.h"
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#include "mbedtls/version.h"
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#include "mbedtls/x509.h"
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#include "mbedtls/x509_crl.h"
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#include "mbedtls/x509_crt.h"
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#include "mbedtls/x509_csr.h"
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#include "mbedtls/xtea.h"
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#include <stdio.h>
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#include <string.h>
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/* Helper macros to convert a macro or its expansion into a string */
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#define MACRO_EXPANSION_TO_STR(macro) MACRO_NAME_TO_STR(macro)
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#define MACRO_NAME_TO_STR(macro) strlen( #macro ) > 0 ? #macro "\n" : ""
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int query_config( const char *config )
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{
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CHECK_CONFIG return( 1 );
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}
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62
scripts/generate_query_config.pl
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62
scripts/generate_query_config.pl
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#! /usr/bin/env perl
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# Generate query_config.c
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#
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# The file query_config.c contains a C function that can be used to check if
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# a configuration macro is defined and to retrieve its expansion in string
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# form (if any). This facilitates querying the compile time configuration of
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# the library, for example, for testing.
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#
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# The query_config.c is generated from the current configuration at
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# include/mbedtls/config.h. The idea is that the config.h contains ALL the
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# compile time configurations available in Mbed TLS (commented or uncommented).
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# This script extracts the configuration macros from the config.h and this
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# information is used to automatically generate the body of the query_config()
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# function by using the template in scripts/data_files/query_config.fmt.
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#
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# Usage: ./scripts/generate_query_config.pl without arguments
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use strict;
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my $config_file = "./include/mbedtls/config.h";
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my $query_config_format_file = "./scripts/data_files/query_config.fmt";
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my $query_config_file = "./programs/ssl/query_config.c";
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open(CONFIG_FILE, "$config_file") or die "Opening config file '$config_file': $!";
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# This variable will contain the string to replace in the CHECK_CONFIG of the
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# format file
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my $config_check = "";
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while (my $line = <CONFIG_FILE>) {
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if ($line =~ /^(\/\/)?\s*#\s*define\s+(MBEDTLS_\w+).*/) {
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my $name = $2;
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# Skip over the macro that prevents multiple inclusion
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next if "MBEDTLS_CONFIG_H" eq $name;
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$config_check .= "#if defined($name)\n";
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$config_check .= " if( strcmp( \"$name\", config ) == 0 )\n";
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$config_check .= " {\n";
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$config_check .= " mbedtls_printf( MACRO_EXPANSION_TO_STR( $name ) );\n";
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$config_check .= " return( 0 );\n";
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$config_check .= " }\n";
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$config_check .= "#endif /* $name */\n";
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$config_check .= "\n";
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}
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}
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# Read the fill format file into a string
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local $/;
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open(FORMAT_FILE, "$query_config_format_file") or die "Opening query config format file '$query_config_format_file': $!";
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my $query_config_format = <FORMAT_FILE>;
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close(FORMAT_FILE);
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# Replace the body of the query_config() function with the code we just wrote
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$query_config_format =~ s/CHECK_CONFIG/$config_check/g;
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# Rewrite the query_config.c file
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open(QUERY_CONFIG_FILE, ">$query_config_file") or die "Opening destination file '$query_config_file': $!";
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print QUERY_CONFIG_FILE $query_config_format;
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close(QUERY_CONFIG_FILE);
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