diff options
Diffstat (limited to 'roms/skiboot/libstb/crypto/mbedtls/scripts/generate_errors.pl')
| -rwxr-xr-x | roms/skiboot/libstb/crypto/mbedtls/scripts/generate_errors.pl | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/roms/skiboot/libstb/crypto/mbedtls/scripts/generate_errors.pl b/roms/skiboot/libstb/crypto/mbedtls/scripts/generate_errors.pl new file mode 100755 index 000000000..0c1f7e16e --- /dev/null +++ b/roms/skiboot/libstb/crypto/mbedtls/scripts/generate_errors.pl @@ -0,0 +1,207 @@ +#!/usr/bin/env perl + +# Generate error.c +# +# Usage: ./generate_errors.pl or scripts/generate_errors.pl without arguments, +# or generate_errors.pl include_dir data_dir error_file + +use strict; + +my ($include_dir, $data_dir, $error_file); + +if( @ARGV ) { + die "Invalid number of arguments" if scalar @ARGV != 3; + ($include_dir, $data_dir, $error_file) = @ARGV; + + -d $include_dir or die "No such directory: $include_dir\n"; + -d $data_dir or die "No such directory: $data_dir\n"; +} else { + $include_dir = 'include/mbedtls'; + $data_dir = 'scripts/data_files'; + $error_file = 'library/error.c'; + + unless( -d $include_dir && -d $data_dir ) { + chdir '..' or die; + -d $include_dir && -d $data_dir + or die "Without arguments, must be run from root or scripts\n" + } +} + +my $error_format_file = $data_dir.'/error.fmt'; + +my @low_level_modules = qw( AES ARC4 ARIA ASN1 BASE64 BIGNUM BLOWFISH + CAMELLIA CCM CHACHA20 CHACHAPOLY CMAC CTR_DRBG DES + ENTROPY GCM HKDF HMAC_DRBG MD2 MD4 MD5 + NET OID PADLOCK PBKDF2 PLATFORM POLY1305 RIPEMD160 + SHA1 SHA256 SHA512 THREADING XTEA ); +my @high_level_modules = qw( CIPHER DHM ECP MD + PEM PK PKCS12 PKCS5 + RSA SSL X509 ); + +my $line_separator = $/; +undef $/; + +open(FORMAT_FILE, "$error_format_file") or die "Opening error format file '$error_format_file': $!"; +my $error_format = <FORMAT_FILE>; +close(FORMAT_FILE); + +$/ = $line_separator; + +my @files = <$include_dir/*.h>; +my @matches; +foreach my $file (@files) { + open(FILE, "$file"); + my @grep_res = grep(/^\s*#define\s+MBEDTLS_ERR_\w+\s+\-0x[0-9A-Fa-f]+/, <FILE>); + push(@matches, @grep_res); + close FILE; +} + +my $ll_old_define = ""; +my $hl_old_define = ""; + +my $ll_code_check = ""; +my $hl_code_check = ""; + +my $headers = ""; + +my %error_codes_seen; + + +foreach my $line (@matches) +{ + next if ($line =~ /compat-1.2.h/); + my ($error_name, $error_code) = $line =~ /(MBEDTLS_ERR_\w+)\s+\-(0x\w+)/; + my ($description) = $line =~ /\/\*\*< (.*?)\.? \*\//; + + die "Duplicated error code: $error_code ($error_name)\n" + if( $error_codes_seen{$error_code}++ ); + + $description =~ s/\\/\\\\/g; + if ($description eq "") { + $description = "DESCRIPTION MISSING"; + warn "Missing description for $error_name\n"; + } + + my ($module_name) = $error_name =~ /^MBEDTLS_ERR_([^_]+)/; + + # Fix faulty ones + $module_name = "BIGNUM" if ($module_name eq "MPI"); + $module_name = "CTR_DRBG" if ($module_name eq "CTR"); + $module_name = "HMAC_DRBG" if ($module_name eq "HMAC"); + + my $define_name = $module_name; + $define_name = "X509_USE,X509_CREATE" if ($define_name eq "X509"); + $define_name = "ASN1_PARSE" if ($define_name eq "ASN1"); + $define_name = "SSL_TLS" if ($define_name eq "SSL"); + $define_name = "PEM_PARSE,PEM_WRITE" if ($define_name eq "PEM"); + + my $include_name = $module_name; + $include_name =~ tr/A-Z/a-z/; + $include_name = "" if ($include_name eq "asn1"); + + # Fix faulty ones + $include_name = "net_sockets" if ($module_name eq "NET"); + + my $found_ll = grep $_ eq $module_name, @low_level_modules; + my $found_hl = grep $_ eq $module_name, @high_level_modules; + if (!$found_ll && !$found_hl) + { + printf("Error: Do not know how to handle: $module_name\n"); + exit 1; + } + + my $code_check; + my $old_define; + my $white_space; + my $first; + + if ($found_ll) + { + $code_check = \$ll_code_check; + $old_define = \$ll_old_define; + $white_space = ' '; + } + else + { + $code_check = \$hl_code_check; + $old_define = \$hl_old_define; + $white_space = ' '; + } + + if ($define_name ne ${$old_define}) + { + if (${$old_define} ne "") + { + ${$code_check} .= "#endif /* "; + $first = 0; + foreach my $dep (split(/,/, ${$old_define})) + { + ${$code_check} .= " || " if ($first++); + ${$code_check} .= "MBEDTLS_${dep}_C"; + } + ${$code_check} .= " */\n\n"; + } + + ${$code_check} .= "#if "; + $headers .= "#if " if ($include_name ne ""); + $first = 0; + foreach my $dep (split(/,/, ${define_name})) + { + ${$code_check} .= " || " if ($first); + $headers .= " || " if ($first++); + + ${$code_check} .= "defined(MBEDTLS_${dep}_C)"; + $headers .= "defined(MBEDTLS_${dep}_C)" if + ($include_name ne ""); + } + ${$code_check} .= "\n"; + $headers .= "\n#include \"mbedtls/${include_name}.h\"\n". + "#endif\n\n" if ($include_name ne ""); + ${$old_define} = $define_name; + } + + if ($error_name eq "MBEDTLS_ERR_SSL_FATAL_ALERT_MESSAGE") + { + ${$code_check} .= "${white_space}if( use_ret == -($error_name) )\n". + "${white_space}\{\n". + "${white_space} mbedtls_snprintf( buf, buflen, \"$module_name - $description\" );\n". + "${white_space} return;\n". + "${white_space}}\n" + } + else + { + ${$code_check} .= "${white_space}if( use_ret == -($error_name) )\n". + "${white_space} mbedtls_snprintf( buf, buflen, \"$module_name - $description\" );\n" + } +}; + +if ($ll_old_define ne "") +{ + $ll_code_check .= "#endif /* "; + my $first = 0; + foreach my $dep (split(/,/, $ll_old_define)) + { + $ll_code_check .= " || " if ($first++); + $ll_code_check .= "MBEDTLS_${dep}_C"; + } + $ll_code_check .= " */\n"; +} +if ($hl_old_define ne "") +{ + $hl_code_check .= "#endif /* "; + my $first = 0; + foreach my $dep (split(/,/, $hl_old_define)) + { + $hl_code_check .= " || " if ($first++); + $hl_code_check .= "MBEDTLS_${dep}_C"; + } + $hl_code_check .= " */\n"; +} + +$error_format =~ s/HEADER_INCLUDED\n/$headers/g; +$error_format =~ s/LOW_LEVEL_CODE_CHECKS\n/$ll_code_check/g; +$error_format =~ s/HIGH_LEVEL_CODE_CHECKS\n/$hl_code_check/g; + +open(ERROR_FILE, ">$error_file") or die "Opening destination file '$error_file': $!"; +print ERROR_FILE $error_format; +close(ERROR_FILE); |