| #!/usr/bin/perl |
| # |
| # This file is part of mbed TLS (https://tls.mbed.org) |
| # |
| # Copyright (c) 2014-2016, ARM Limited, All Rights Reserved |
| # |
| # Purpose |
| # |
| # Comments and uncomments #define lines in the given header file and optionally |
| # sets their value or can get the value. This is to provide scripting control of |
| # what preprocessor symbols, and therefore what build time configuration flags |
| # are set in the 'config.h' file. |
| # |
| # Usage: config.pl [-f <file> | --file <file>] [-o | --force] |
| # [set <symbol> <value> | unset <symbol> | get <symbol> | |
| # full | realfull] |
| # |
| # Full usage description provided below. |
| # |
| # The following options are disabled instead of enabled with "full". |
| # |
| # MBEDTLS_TEST_NULL_ENTROPY |
| # MBEDTLS_DEPRECATED_REMOVED |
| # MBEDTLS_HAVE_SSE2 |
| # MBEDTLS_PLATFORM_NO_STD_FUNCTIONS |
| # MBEDTLS_ECP_DP_M221_ENABLED |
| # MBEDTLS_ECP_DP_M383_ENABLED |
| # MBEDTLS_ECP_DP_M511_ENABLED |
| # MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES |
| # MBEDTLS_NO_PLATFORM_ENTROPY |
| # MBEDTLS_REMOVE_ARC4_CIPHERSUITES |
| # MBEDTLS_SSL_HW_RECORD_ACCEL |
| # MBEDTLS_RSA_NO_CRT |
| # MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3 |
| # MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION |
| # - this could be enabled if the respective tests were adapted |
| # MBEDTLS_ZLIB_SUPPORT |
| # MBEDTLS_PKCS11_C |
| # and any symbol beginning _ALT |
| # |
| |
| use warnings; |
| use strict; |
| |
| my $config_file = "include/mbedtls/config.h"; |
| my $usage = <<EOU; |
| $0 [-f <file> | --file <file>] [-o | --force] |
| [set <symbol> <value> | unset <symbol> | get <symbol> | |
| full | realfull | baremetal] |
| |
| Commands |
| set <symbol> [<value>] - Uncomments or adds a #define for the <symbol> to |
| the configuration file, and optionally making it |
| of <value>. |
| If the symbol isn't present in the file an error |
| is returned. |
| unset <symbol> - Comments out the #define for the given symbol if |
| present in the configuration file. |
| get <symbol> - Finds the #define for the given symbol, returning |
| an exitcode of 0 if the symbol is found, and 1 if |
| not. The value of the symbol is output if one is |
| specified in the configuration file. |
| full - Uncomments all #define's in the configuration file |
| excluding some reserved symbols, until the |
| 'Module configuration options' section |
| realfull - Uncomments all #define's with no exclusions |
| baremetal - Sets full configuration suitable for baremetal build. |
| |
| Options |
| -f | --file <filename> - The file or file path for the configuration file |
| to edit. When omitted, the following default is |
| used: |
| $config_file |
| -o | --force - If the symbol isn't present in the configuration |
| file when setting its value, a #define is |
| appended to the end of the file. |
| |
| EOU |
| |
| my @excluded = qw( |
| MBEDTLS_TEST_NULL_ENTROPY |
| MBEDTLS_DEPRECATED_REMOVED |
| MBEDTLS_HAVE_SSE2 |
| MBEDTLS_PLATFORM_NO_STD_FUNCTIONS |
| MBEDTLS_ECP_DP_M221_ENABLED |
| MBEDTLS_ECP_DP_M383_ENABLED |
| MBEDTLS_ECP_DP_M511_ENABLED |
| MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES |
| MBEDTLS_NO_PLATFORM_ENTROPY |
| MBEDTLS_RSA_NO_CRT |
| MBEDTLS_REMOVE_ARC4_CIPHERSUITES |
| MBEDTLS_SSL_HW_RECORD_ACCEL |
| MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3 |
| MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION |
| MBEDTLS_ZLIB_SUPPORT |
| MBEDTLS_PKCS11_C |
| MBEDTLS_NO_UDBL_DIVISION |
| _ALT\s*$ |
| ); |
| |
| # Things that should be disabled in "baremetal" |
| my @excluded_baremetal = qw( |
| MBEDTLS_NET_C |
| MBEDTLS_TIMING_C |
| MBEDTLS_FS_IO |
| MBEDTLS_ENTROPY_NV_SEED |
| MBEDTLS_HAVE_TIME |
| MBEDTLS_HAVE_TIME_DATE |
| MBEDTLS_DEPRECATED_WARNING |
| MBEDTLS_HAVEGE_C |
| MBEDTLS_THREADING_C |
| MBEDTLS_THREADING_PTHREAD |
| MBEDTLS_MEMORY_BACKTRACE |
| MBEDTLS_MEMORY_BUFFER_ALLOC_C |
| MBEDTLS_PLATFORM_TIME_ALT |
| MBEDTLS_PLATFORM_FPRINTF_ALT |
| ); |
| |
| # Things that should be enabled in "full" even if they match @excluded |
| my @non_excluded = qw( |
| PLATFORM_[A-Z0-9]+_ALT |
| ); |
| |
| # Things that should be enabled in "baremetal" |
| my @non_excluded_baremetal = qw( |
| MBEDTLS_NO_PLATFORM_ENTROPY |
| ); |
| |
| # Process the command line arguments |
| |
| my $force_option = 0; |
| |
| my ($arg, $name, $value, $action); |
| |
| while ($arg = shift) { |
| |
| # Check if the argument is an option |
| if ($arg eq "-f" || $arg eq "--file") { |
| $config_file = shift; |
| |
| -f $config_file or die "No such file: $config_file\n"; |
| |
| } |
| elsif ($arg eq "-o" || $arg eq "--force") { |
| $force_option = 1; |
| |
| } |
| else |
| { |
| # ...else assume it's a command |
| $action = $arg; |
| |
| if ($action eq "full" || $action eq "realfull" || $action eq "baremetal" ) { |
| # No additional parameters |
| die $usage if @ARGV; |
| |
| } |
| elsif ($action eq "unset" || $action eq "get") { |
| die $usage unless @ARGV; |
| $name = shift; |
| |
| } |
| elsif ($action eq "set") { |
| die $usage unless @ARGV; |
| $name = shift; |
| $value = shift if @ARGV; |
| |
| } |
| else { |
| die "Command '$action' not recognised.\n\n".$usage; |
| } |
| } |
| } |
| |
| # If no command was specified, exit... |
| if ( not defined($action) ){ die $usage; } |
| |
| # Check the config file is present |
| if (! -f $config_file) { |
| |
| chdir '..' or die; |
| |
| # Confirm this is the project root directory and try again |
| if ( !(-d 'scripts' && -d 'include' && -d 'library' && -f $config_file) ) { |
| die "If no file specified, must be run from the project root or scripts directory.\n"; |
| } |
| } |
| |
| |
| # Now read the file and process the contents |
| |
| open my $config_read, '<', $config_file or die "read $config_file: $!\n"; |
| my @config_lines = <$config_read>; |
| close $config_read; |
| |
| # Add required baremetal symbols to the list that is included. |
| if ( $action eq "baremetal" ) { |
| @non_excluded = ( @non_excluded, @non_excluded_baremetal ); |
| } |
| |
| my ($exclude_re, $no_exclude_re, $exclude_baremetal_re); |
| if ($action eq "realfull") { |
| $exclude_re = qr/^$/; |
| $no_exclude_re = qr/./; |
| } else { |
| $exclude_re = join '|', @excluded; |
| $no_exclude_re = join '|', @non_excluded; |
| } |
| if ( $action eq "baremetal" ) { |
| $exclude_baremetal_re = join '|', @excluded_baremetal; |
| } |
| |
| my $config_write = undef; |
| if ($action ne "get") { |
| open $config_write, '>', $config_file or die "write $config_file: $!\n"; |
| } |
| |
| my $done; |
| for my $line (@config_lines) { |
| if ($action eq "full" || $action eq "realfull" || $action eq "baremetal" ) { |
| if ($line =~ /name SECTION: Module configuration options/) { |
| $done = 1; |
| } |
| |
| if (!$done && $line =~ m!^//\s?#define! && |
| ( $line !~ /$exclude_re/ || $line =~ /$no_exclude_re/ ) && |
| ( $action ne "baremetal" || ( $line !~ /$exclude_baremetal_re/ ) ) ) { |
| $line =~ s!^//\s?!!; |
| } |
| if (!$done && $line =~ m!^\s?#define! && |
| ! ( ( $line !~ /$exclude_re/ || $line =~ /$no_exclude_re/ ) && |
| ( $action ne "baremetal" || ( $line !~ /$exclude_baremetal_re/ ) ) ) ) { |
| $line =~ s!^!//!; |
| } |
| } elsif ($action eq "unset") { |
| if (!$done && $line =~ /^\s*#define\s*$name\b/) { |
| $line = '//' . $line; |
| $done = 1; |
| } |
| } elsif (!$done && $action eq "set") { |
| if ($line =~ m!^(?://)?\s*#define\s*$name\b!) { |
| $line = "#define $name"; |
| $line .= " $value" if defined $value && $value ne ""; |
| $line .= "\n"; |
| $done = 1; |
| } |
| } elsif (!$done && $action eq "get") { |
| if ($line =~ /^\s*#define\s*$name(?:\s+(.*?))\s*(?:$|\/\*|\/\/)/) { |
| $value = $1; |
| $done = 1; |
| } |
| } |
| |
| if (defined $config_write) { |
| print $config_write $line or die "write $config_file: $!\n"; |
| } |
| } |
| |
| # Did the set command work? |
| if ($action eq "set" && $force_option && !$done) { |
| |
| # If the force option was set, append the symbol to the end of the file |
| my $line = "#define $name"; |
| $line .= " $value" if defined $value && $value ne ""; |
| $line .= "\n"; |
| $done = 1; |
| |
| print $config_write $line or die "write $config_file: $!\n"; |
| } |
| |
| if (defined $config_write) { |
| close $config_write or die "close $config_file: $!\n"; |
| } |
| |
| if ($action eq "get") { |
| if ($done) { |
| if ($value ne '') { |
| print "$value\n"; |
| } |
| exit 0; |
| } else { |
| # If the symbol was not found, return an error |
| exit 1; |
| } |
| } |
| |
| if ($action eq "full" && !$done) { |
| die "Configuration section was not found in $config_file\n"; |
| |
| } |
| |
| if ($action ne "full" && $action ne "unset" && !$done) { |
| die "A #define for the symbol $name was not found in $config_file\n"; |
| } |
| |
| __END__ |