5 # Usage: ./generate_errors.pl or scripts/generate_errors.pl without arguments,
6 # or generate_errors.pl include_dir data_dir error_file include_crypto
7 # include_crypto can be either 0 (don't include) or 1 (include). On by default.
11 my ($include_dir, $data_dir, $error_file, $include_crypto);
12 my $crypto_dir = "crypto";
15 die "Invalid number of arguments" if scalar @ARGV != 4;
16 ($include_dir, $data_dir, $error_file, $include_crypto) = @ARGV;
18 -d $include_dir or die "No such directory: $include_dir\n";
19 -d $data_dir or die "No such directory: $data_dir\n";
21 $include_dir = 'include/mbedtls';
22 $data_dir = 'scripts/data_files';
23 $error_file = 'library/error.c';
26 unless( -d $include_dir && -d $data_dir ) {
28 -d $include_dir && -d $data_dir
29 or die "Without arguments, must be run from root or scripts\n"
33 if( $include_crypto ) {
34 -d $crypto_dir or die "Crypto submodule not present\n";
37 my $error_format_file = $data_dir.'/error.fmt';
39 my @low_level_modules = qw( AES ARC4 ARIA ASN1 BASE64 BIGNUM BLOWFISH
40 CAMELLIA CCM CHACHA20 CHACHAPOLY CMAC CTR_DRBG DES
41 ENTROPY GCM HKDF HMAC_DRBG MD2 MD4 MD5
42 NET OID PADLOCK PBKDF2 PLATFORM POLY1305 RIPEMD160
43 SHA1 SHA256 SHA512 THREADING XTEA );
44 my @high_level_modules = qw( CIPHER DHM ECP MD
48 my $line_separator = $/;
51 open(FORMAT_FILE, "$error_format_file") or die "Opening error format file '$error_format_file': $!";
52 my $error_format = <FORMAT_FILE>;
58 if ($include_crypto) {
59 @headers = <$crypto_dir/$include_dir/*.h>;
60 foreach my $header (<$include_dir/*.h>) {
61 my $basename = $header; $basename =~ s!.*/!!;
62 push @headers, $header unless -e "$crypto_dir/$include_dir/$basename";
65 @headers = <$include_dir/*.h>;
69 foreach my $file (@headers) {
71 my @grep_res = grep(/^\s*#define\s+MBEDTLS_ERR_\w+\s+\-0x[0-9A-Fa-f]+/, <FILE>);
72 push(@matches, @grep_res);
76 my $ll_old_define = "";
77 my $hl_old_define = "";
79 my $ll_code_check = "";
80 my $hl_code_check = "";
87 foreach my $line (@matches)
89 next if ($line =~ /compat-1.2.h/);
90 my ($error_name, $error_code) = $line =~ /(MBEDTLS_ERR_\w+)\s+\-(0x\w+)/;
91 my ($description) = $line =~ /\/\*\*< (.*?)\.? \*\//;
93 if( $error_codes_seen{$error_code}++ ) {
94 die "Duplicated error code: $error_code ($error_name)\n";
97 $description =~ s/\\/\\\\/g;
98 if ($description eq "") {
99 $description = "DESCRIPTION MISSING";
100 warn "Missing description for $error_name\n";
103 my ($module_name) = $error_name =~ /^MBEDTLS_ERR_([^_]+)/;
106 $module_name = "BIGNUM" if ($module_name eq "MPI");
107 $module_name = "CTR_DRBG" if ($module_name eq "CTR");
108 $module_name = "HMAC_DRBG" if ($module_name eq "HMAC");
110 my $define_name = $module_name;
111 $define_name = "X509_USE,X509_CREATE" if ($define_name eq "X509");
112 $define_name = "ASN1_PARSE" if ($define_name eq "ASN1");
113 $define_name = "SSL_TLS" if ($define_name eq "SSL");
114 $define_name = "PEM_PARSE,PEM_WRITE" if ($define_name eq "PEM");
116 my $include_name = $module_name;
117 $include_name =~ tr/A-Z/a-z/;
118 $include_name = "" if ($include_name eq "asn1");
121 $include_name = "net_sockets" if ($module_name eq "NET");
123 my $found_ll = grep $_ eq $module_name, @low_level_modules;
124 my $found_hl = grep $_ eq $module_name, @high_level_modules;
125 if (!$found_ll && !$found_hl)
127 printf("Error: Do not know how to handle: $module_name\n");
138 $code_check = \$ll_code_check;
139 $old_define = \$ll_old_define;
144 $code_check = \$hl_code_check;
145 $old_define = \$hl_old_define;
149 if ($define_name ne ${$old_define})
151 if (${$old_define} ne "")
153 ${$code_check} .= "#endif /* ";
155 foreach my $dep (split(/,/, ${$old_define}))
157 ${$code_check} .= " || " if ($first++);
158 ${$code_check} .= "MBEDTLS_${dep}_C";
160 ${$code_check} .= " */\n\n";
163 ${$code_check} .= "#if ";
164 $headers .= "#if " if ($include_name ne "");
166 foreach my $dep (split(/,/, ${define_name}))
168 ${$code_check} .= " || " if ($first);
169 $headers .= " || " if ($first++);
171 ${$code_check} .= "defined(MBEDTLS_${dep}_C)";
172 $headers .= "defined(MBEDTLS_${dep}_C)" if
173 ($include_name ne "");
175 ${$code_check} .= "\n";
176 $headers .= "\n#include \"mbedtls/${include_name}.h\"\n".
177 "#endif\n\n" if ($include_name ne "");
178 ${$old_define} = $define_name;
181 if ($error_name eq "MBEDTLS_ERR_SSL_FATAL_ALERT_MESSAGE")
183 ${$code_check} .= "${white_space}if( use_ret == -($error_name) )\n".
184 "${white_space}\{\n".
185 "${white_space} mbedtls_snprintf( buf, buflen, \"$module_name - $description\" );\n".
186 "${white_space} return;\n".
191 ${$code_check} .= "${white_space}if( use_ret == -($error_name) )\n".
192 "${white_space} mbedtls_snprintf( buf, buflen, \"$module_name - $description\" );\n"
196 if ($ll_old_define ne "")
198 $ll_code_check .= "#endif /* ";
200 foreach my $dep (split(/,/, $ll_old_define))
202 $ll_code_check .= " || " if ($first++);
203 $ll_code_check .= "MBEDTLS_${dep}_C";
205 $ll_code_check .= " */\n";
207 if ($hl_old_define ne "")
209 $hl_code_check .= "#endif /* ";
211 foreach my $dep (split(/,/, $hl_old_define))
213 $hl_code_check .= " || " if ($first++);
214 $hl_code_check .= "MBEDTLS_${dep}_C";
216 $hl_code_check .= " */\n";
219 $error_format =~ s/HEADER_INCLUDED\n/$headers/g;
220 $error_format =~ s/LOW_LEVEL_CODE_CHECKS\n/$ll_code_check/g;
221 $error_format =~ s/HIGH_LEVEL_CODE_CHECKS\n/$hl_code_check/g;
223 open(ERROR_FILE, ">$error_file") or die "Opening destination file '$error_file': $!";
224 print ERROR_FILE $error_format;