mbedtls/scripts/generate_errors.pl
Manuel Pégourié-Gonnard 0dadba2b58 Merge branch 'development' into iotssl-2257-chacha-poly-primitives
* development: (182 commits)
  Change the library version to 2.11.0
  Fix version in ChangeLog for fix for #552
  Add ChangeLog entry for clang version fix. Issue #1072
  Compilation warning fixes on 32b platfrom with IAR
  Revert "Turn on MBEDTLS_SSL_ASYNC_PRIVATE by default"
  Fix for missing len var when XTS config'd and CTR not
  ssl_server2: handle mbedtls_x509_dn_gets failure
  Fix harmless use of uninitialized memory in ssl_parse_encrypted_pms
  SSL async tests: add a few test cases for error in decrypt
  Fix memory leak in ssl_server2 with SNI + async callback
  SNI + SSL async callback: make all keys async
  ssl_async_resume: free the operation context on error
  ssl_server2: get op_name from context in ssl_async_resume as well
  Clarify "as directed here" in SSL async callback documentation
  SSL async callbacks documentation: clarify resource cleanup
  Async callback: use mbedtls_pk_check_pair to compare keys
  Rename mbedtls_ssl_async_{get,set}_data for clarity
  Fix copypasta in the async callback documentation
  SSL async callback: cert is not always from mbedtls_ssl_conf_own_cert
  ssl_async_set_key: detect if ctx->slots overflows
  ...
2018-06-19 11:13:50 +02:00

207 lines
6.2 KiB
Perl
Executable file

#!/usr/bin/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 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);