version_check_feature() added to check for compile-time options at run-time

scripts/bump_version.sh

@@ -84,3 +84,8 @@ do
   mv tmp $i
 done
 
+[ $VERBOSE ] && echo "Re-generating library/error.c"
+scripts/generate_errors.pl include/polarssl scripts/data_files library/error.c
+
+[ $VERBOSE ] && echo "Re-generating library/version_features.c"
+scripts/generate_features.pl include/polarssl scripts/data_files library/version_features.c

scripts/data_files/version_features.fmt

@@ -0,0 +1,60 @@
+/*
+ *  Version feature information
+ *
+ *  Copyright (C) 2006-2014, Brainspark B.V.
+ *
+ *  This file is part of PolarSSL (http://www.polarssl.org)
+ *  Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
+ *
+ *  All rights reserved.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "polarssl/config.h"
+
+#if defined(POLARSSL_VERSION_C)
+
+#include "polarssl/version.h"
+
+#include <string.h>
+
+#if defined(_MSC_VER) && !defined  snprintf && !defined(EFIX64) && \
+    !defined(EFI32)
+#define  snprintf  _snprintf
+#endif
+
+const char *features[] = {
+FEATURE_DEFINES
+    NULL
+};
+
+int version_check_feature( const char *feature )
+{
+    const char **idx = features;
+
+    if( feature == NULL )
+        return( -1 );
+
+    while( *idx != NULL )
+    {
+        if( !strcasecmp( *idx, feature ) )
+            return( 0 );
+        idx++;
+    }
+    return( -1 );
+}
+
+#endif /* POLARSSL_VERSION_C */

scripts/generate_features.pl

@@ -0,0 +1,57 @@
+#!/usr/bin/perl
+#
+
+use strict;
+
+my $include_dir = shift or die "Missing include directory";
+my $data_dir = shift or die "Missing data directory";
+my $feature_file = shift or die "Missing destination file";
+my $feature_format_file = $data_dir.'/version_features.fmt';
+
+my @sections = ( "System support", "PolarSSL modules",
+                 "PolarSSL feature support" );
+
+my $line_separator = $/;
+undef $/;
+
+open(FORMAT_FILE, "$feature_format_file") or die "Opening feature format file '$feature_format_file': $!";
+my $feature_format = <FORMAT_FILE>;
+close(FORMAT_FILE);
+
+$/ = $line_separator;
+
+open(CONFIG_H, "$include_dir/config.h") || die("Failure when opening config.h: $!");
+
+my $feature_defines = "";
+my $in_section = 0;
+
+while (my $line = <CONFIG_H>)
+{
+    next if ($in_section && $line !~ /#define/ && $line !~ /SECTION/);
+    next if (!$in_section && $line !~ /SECTION/);
+
+    if ($in_section) {
+        if ($line =~ /SECTION/) {
+            $in_section = 0;
+            next;
+        }
+
+        my ($define) = $line =~ /#define (\w+)/;
+        $feature_defines .= "#if defined(${define})\n";
+        $feature_defines .= "    \"${define}\",\n";
+        $feature_defines .= "#endif /* ${define} */\n";
+    }
+
+    if (!$in_section) {
+        my ($section_name) = $line =~ /SECTION: ([\w ]+)/;
+        my $found_section = grep $_ eq $section_name, @sections;
+
+        $in_section = 1 if ($found_section);
+    }
+};
+
+$feature_format =~ s/FEATURE_DEFINES\n/$feature_defines/g;
+
+open(ERROR_FILE, ">$feature_file") or die "Opening destination file '$feature_file': $!";
+print ERROR_FILE $feature_format;
+close(ERROR_FILE);