util/mkdef.pl

   1 #!/usr/local/bin/perl -w
   2 #
   3 # generate a .def file
   4 #
   5 # It does this by parsing the header files and looking for the
   6 # prototyped functions: it then prunes the output.
   7 #
   8 # Intermediary files are created, call libeay.num and ssleay.num,...
   9 # Previously, they had the following format:
  10 #
  11 #       routine-name    nnnn
  12 #
  13 # But that isn't enough for a number of reasons, the first on being that
  14 # this format is (needlessly) very Win32-centric, and even then...
  15 # One of the biggest problems is that there's no information about what
  16 # routines should actually be used, which varies with what crypto algorithms
  17 # are disabled.  Also, some operating systems (for example VMS with VAX C)
  18 # need to keep track of the global variables as well as the functions.
  19 #
  20 # So, a remake of this script is done so as to include information on the
  21 # kind of symbol it is (function or variable) and what algorithms they're
  22 # part of.  This will allow easy translating to .def files or the corresponding
  23 # file in other operating systems (a .opt file for VMS, possibly with a .mar
  24 # file).
  25 #
  26 # The format now becomes:
  27 #
  28 #       routine-name    nnnn    info
  29 #
  30 # and the "info" part is actually a colon-separated string of fields with
  31 # the following meaning:
  32 #
  33 #       existence:platform:kind:algorithms
  34 #
  35 # - "existence" can be "EXIST" or "NOEXIST" depending on if the symbol is
  36 #   found somewhere in the source,
  37 # - "platforms" is empty if it exists on all platforms, otherwise it contains
  38 #   comma-separated list of the platform, just as they are if the symbol exists
  39 #   for those platforms, or prepended with a "!" if not.  This helps resolve
  40 #   symbol name variants for platforms where the names are too long for the
  41 #   compiler or linker, or if the systems is case insensitive and there is a
  42 #   clash, or the symbol is implemented differently (see
  43 #   EXPORT_VAR_AS_FUNCTION).  This script assumes renaming of symbols is found
  44 #   in the file crypto/symhacks.h.
  45 #   The semantics for the platforms is that every item is checked against the
  46 #   environment.  For the negative items ("!FOO"), if any of them is false
  47 #   (i.e. "FOO" is true) in the environment, the corresponding symbol can't be
  48 #   used.  For the positive itms, if all of them are false in the environment,
  49 #   the corresponding symbol can't be used.  Any combination of positive and
  50 #   negative items are possible, and of course leave room for some redundancy.
  51 # - "kind" is "FUNCTION" or "VARIABLE".  The meaning of that is obvious.
  52 # - "algorithms" is a comma-separated list of algorithm names.  This helps
  53 #   exclude symbols that are part of an algorithm that some user wants to
  54 #   exclude.
  55 #
  56
  57 my $debug=0;
  58
  59 my $crypto_num= "util/libeay.num";
  60 my $ssl_num=    "util/ssleay.num";
  61 my $libname;
  62
  63 my $do_update = 0;
  64 my $do_rewrite = 1;
  65 my $do_crypto = 0;
  66 my $do_ssl = 0;
  67 my $do_ctest = 0;
  68 my $do_ctestall = 0;
  69 my $do_checkexist = 0;
  70
  71 my $VMSVAX=0;
  72 my $VMSNonVAX=0;
  73 my $VMS=0;
  74 my $W32=0;
  75 my $W16=0;
  76 my $NT=0;
  77 my $OS2=0;
  78 # Set this to make typesafe STACK definitions appear in DEF
  79 my $safe_stack_def = 0;
  80
  81 my @known_platforms = ( "__FreeBSD__", "PERL5", "NeXT",
  82                         "EXPORT_VAR_AS_FUNCTION", "ZLIB", "OPENSSL_FIPS" );
  83 my @known_ossl_platforms = ( "VMS", "WIN16", "WIN32", "WINNT", "OS2" );
  84 my @known_algorithms = ( "RC2", "RC4", "RC5", "IDEA", "DES", "BF",
  85                          "CAST", "MD2", "MD4", "MD5", "SHA", "SHA0", "SHA1",
  86                          "SHA256", "SHA512", "RIPEMD",
  87                          "MDC2", "WHIRLPOOL", "RSA", "DSA", "DH", "EC", "ECDH", "ECDSA", "EC2M",
  88                          "HMAC", "AES", "CAMELLIA", "SEED", "GOST",
  89                          # Envelope "algorithms"
  90                          "EVP", "X509", "ASN1_TYPEDEFS",
  91                          # Helper "algorithms"
  92                          "BIO", "COMP", "BUFFER", "LHASH", "STACK", "ERR",
  93                          "LOCKING",
  94                          # External "algorithms"
  95                          "FP_API", "STDIO", "SOCK", "KRB5", "DGRAM",
  96                          # Engines
  97                          "STATIC_ENGINE", "ENGINE", "HW", "GMP",
  98                          # RFC3779
  99                          "RFC3779",
 100                          # TLS
 101                          "TLSEXT", "PSK",
 102                          # CMS
 103                          "CMS",
 104                          # CryptoAPI Engine
 105                          "CAPIENG",
 106                          # SSL v2
 107                          "SSL2",
 108                          # JPAKE
 109                          "JPAKE",
 110                          # NEXTPROTONEG
 111                          "NEXTPROTONEG",
 112                          # Deprecated functions
 113                          "DEPRECATED" );
 114
 115 my $options="";
 116 open(IN,"<Makefile") || die "unable to open Makefile!\n";
 117 while(<IN>) {
 118     $options=$1 if (/^OPTIONS=(.*)$/);
 119 }
 120 close(IN);
 121
 122 # The following ciphers may be excluded (by Configure). This means functions
 123 # defined with ifndef(NO_XXX) are not included in the .def file, and everything
 124 # in directory xxx is ignored.
 125 my $no_rc2; my $no_rc4; my $no_rc5; my $no_idea; my $no_des; my $no_bf;
 126 my $no_cast; my $no_whirlpool; my $no_camellia; my $no_seed;
 127 my $no_md2; my $no_md4; my $no_md5; my $no_sha; my $no_ripemd; my $no_mdc2;
 128 my $no_rsa; my $no_dsa; my $no_dh; my $no_hmac=0; my $no_aes; my $no_krb5;
 129 my $no_ec; my $no_ecdsa; my $no_ecdh; my $no_engine; my $no_hw;
 130 my $no_fp_api; my $no_static_engine=1; my $no_gmp; my $no_deprecated;
 131 my $no_rfc3779; my $no_psk; my $no_tlsext; my $no_cms; my $no_capieng;
 132 my $no_jpake; my $no_ssl2; my $no_ec2m; my $no_nextprotoneg;
 133
 134 my $fips;
 135
 136 my $zlib;
 137
 138
 139 foreach (@ARGV, split(/ /, $options))
 140         {
 141         $debug=1 if $_ eq "debug";
 142         $W32=1 if $_ eq "32";
 143         $W16=1 if $_ eq "16";
 144         if($_ eq "NT") {
 145                 $W32 = 1;
 146                 $NT = 1;
 147         }
 148         if ($_ eq "VMS-VAX") {
 149                 $VMS=1;
 150                 $VMSVAX=1;
 151         }
 152         if ($_ eq "VMS-NonVAX") {
 153                 $VMS=1;
 154                 $VMSNonVAX=1;
 155         }
 156         $VMS=1 if $_ eq "VMS";
 157         $OS2=1 if $_ eq "OS2";
 158         $fips=1 if /^fips/;
 159         if ($_ eq "zlib" || $_ eq "enable-zlib" || $_ eq "zlib-dynamic"
 160                          || $_ eq "enable-zlib-dynamic") {
 161                 $zlib = 1;
 162         }
 163
 164         $do_ssl=1 if $_ eq "ssleay";
 165         if ($_ eq "ssl") {
 166                 $do_ssl=1;
 167                 $libname=$_
 168         }
 169         $do_crypto=1 if $_ eq "libeay";
 170         if ($_ eq "crypto") {
 171                 $do_crypto=1;
 172                 $libname=$_;
 173         }
 174         $no_static_engine=1 if $_ eq "no-static-engine";
 175         $no_static_engine=0 if $_ eq "enable-static-engine";
 176         $do_update=1 if $_ eq "update";
 177         $do_rewrite=1 if $_ eq "rewrite";
 178         $do_ctest=1 if $_ eq "ctest";
 179         $do_ctestall=1 if $_ eq "ctestall";
 180         $do_checkexist=1 if $_ eq "exist";
 181         #$safe_stack_def=1 if $_ eq "-DDEBUG_SAFESTACK";
 182
 183         if    (/^no-rc2$/)      { $no_rc2=1; }
 184         elsif (/^no-rc4$/)      { $no_rc4=1; }
 185         elsif (/^no-rc5$/)      { $no_rc5=1; }
 186         elsif (/^no-idea$/)     { $no_idea=1; }
 187         elsif (/^no-des$/)      { $no_des=1; $no_mdc2=1; }
 188         elsif (/^no-bf$/)       { $no_bf=1; }
 189         elsif (/^no-cast$/)     { $no_cast=1; }
 190         elsif (/^no-whirlpool$/)     { $no_whirlpool=1; }
 191         elsif (/^no-md2$/)      { $no_md2=1; }
 192         elsif (/^no-md4$/)      { $no_md4=1; }
 193         elsif (/^no-md5$/)      { $no_md5=1; }
 194         elsif (/^no-sha$/)      { $no_sha=1; }
 195         elsif (/^no-ripemd$/)   { $no_ripemd=1; }
 196         elsif (/^no-mdc2$/)     { $no_mdc2=1; }
 197         elsif (/^no-rsa$/)      { $no_rsa=1; }
 198         elsif (/^no-dsa$/)      { $no_dsa=1; }
 199         elsif (/^no-dh$/)       { $no_dh=1; }
 200         elsif (/^no-ec$/)       { $no_ec=1; }
 201         elsif (/^no-ecdsa$/)    { $no_ecdsa=1; }
 202         elsif (/^no-ecdh$/)     { $no_ecdh=1; }
 203         elsif (/^no-hmac$/)     { $no_hmac=1; }
 204         elsif (/^no-aes$/)      { $no_aes=1; }
 205         elsif (/^no-camellia$/) { $no_camellia=1; }
 206         elsif (/^no-seed$/)     { $no_seed=1; }
 207         elsif (/^no-evp$/)      { $no_evp=1; }
 208         elsif (/^no-lhash$/)    { $no_lhash=1; }
 209         elsif (/^no-stack$/)    { $no_stack=1; }
 210         elsif (/^no-err$/)      { $no_err=1; }
 211         elsif (/^no-buffer$/)   { $no_buffer=1; }
 212         elsif (/^no-bio$/)      { $no_bio=1; }
 213         #elsif (/^no-locking$/) { $no_locking=1; }
 214         elsif (/^no-comp$/)     { $no_comp=1; }
 215         elsif (/^no-dso$/)      { $no_dso=1; }
 216         elsif (/^no-krb5$/)     { $no_krb5=1; }
 217         elsif (/^no-engine$/)   { $no_engine=1; }
 218         elsif (/^no-hw$/)       { $no_hw=1; }
 219         elsif (/^no-gmp$/)      { $no_gmp=1; }
 220         elsif (/^no-rfc3779$/)  { $no_rfc3779=1; }
 221         elsif (/^no-tlsext$/)   { $no_tlsext=1; }
 222         elsif (/^no-cms$/)      { $no_cms=1; }
 223         elsif (/^no-ec2m$/)     { $no_ec2m=1; }
 224         elsif (/^no-nextprotoneg$/)     { $no_nextprotoneg=1; }
 225         elsif (/^no-ssl2$/)     { $no_ssl2=1; }
 226         elsif (/^no-capieng$/)  { $no_capieng=1; }
 227         elsif (/^no-jpake$/)    { $no_jpake=1; }
 228         }
 229
 230
 231 if (!$libname) {
 232         if ($do_ssl) {
 233                 $libname="SSLEAY";
 234         }
 235         if ($do_crypto) {
 236                 $libname="LIBEAY";
 237         }
 238 }
 239
 240 # If no platform is given, assume WIN32
 241 if ($W32 + $W16 + $VMS + $OS2 == 0) {
 242         $W32 = 1;
 243 }
 244
 245 # Add extra knowledge
 246 if ($W16) {
 247         $no_fp_api=1;
 248 }
 249
 250 if (!$do_ssl && !$do_crypto)
 251         {
 252         print STDERR "usage: $0 ( ssl | crypto ) [ 16 | 32 | NT | OS2 ]\n";
 253         exit(1);
 254         }
 255
 256 %ssl_list=&load_numbers($ssl_num);
 257 $max_ssl = $max_num;
 258 %crypto_list=&load_numbers($crypto_num);
 259 $max_crypto = $max_num;
 260
 261 my $ssl="ssl/ssl.h";
 262 $ssl.=" ssl/kssl.h";
 263 $ssl.=" ssl/tls1.h";
 264
 265 my $crypto ="crypto/crypto.h";
 266 $crypto.=" crypto/o_dir.h";
 267 $crypto.=" crypto/des/des.h crypto/des/des_old.h" ; # unless $no_des;
 268 $crypto.=" crypto/idea/idea.h" ; # unless $no_idea;
 269 $crypto.=" crypto/rc4/rc4.h" ; # unless $no_rc4;
 270 $crypto.=" crypto/rc5/rc5.h" ; # unless $no_rc5;
 271 $crypto.=" crypto/rc2/rc2.h" ; # unless $no_rc2;
 272 $crypto.=" crypto/bf/blowfish.h" ; # unless $no_bf;
 273 $crypto.=" crypto/cast/cast.h" ; # unless $no_cast;
 274 $crypto.=" crypto/whrlpool/whrlpool.h" ;
 275 $crypto.=" crypto/md2/md2.h" ; # unless $no_md2;
 276 $crypto.=" crypto/md4/md4.h" ; # unless $no_md4;
 277 $crypto.=" crypto/md5/md5.h" ; # unless $no_md5;
 278 $crypto.=" crypto/mdc2/mdc2.h" ; # unless $no_mdc2;
 279 $crypto.=" crypto/sha/sha.h" ; # unless $no_sha;
 280 $crypto.=" crypto/ripemd/ripemd.h" ; # unless $no_ripemd;
 281 $crypto.=" crypto/aes/aes.h" ; # unless $no_aes;
 282 $crypto.=" crypto/camellia/camellia.h" ; # unless $no_camellia;
 283 $crypto.=" crypto/seed/seed.h"; # unless $no_seed;
 284
 285 $crypto.=" crypto/bn/bn.h";
 286 $crypto.=" crypto/rsa/rsa.h" ; # unless $no_rsa;
 287 $crypto.=" crypto/dsa/dsa.h" ; # unless $no_dsa;
 288 $crypto.=" crypto/dh/dh.h" ; # unless $no_dh;
 289 $crypto.=" crypto/ec/ec.h" ; # unless $no_ec;
 290 $crypto.=" crypto/ecdsa/ecdsa.h" ; # unless $no_ecdsa;
 291 $crypto.=" crypto/ecdh/ecdh.h" ; # unless $no_ecdh;
 292 $crypto.=" crypto/hmac/hmac.h" ; # unless $no_hmac;
 293
 294 $crypto.=" crypto/engine/engine.h"; # unless $no_engine;
 295 $crypto.=" crypto/stack/stack.h" ; # unless $no_stack;
 296 $crypto.=" crypto/buffer/buffer.h" ; # unless $no_buffer;
 297 $crypto.=" crypto/bio/bio.h" ; # unless $no_bio;
 298 $crypto.=" crypto/dso/dso.h" ; # unless $no_dso;
 299 $crypto.=" crypto/lhash/lhash.h" ; # unless $no_lhash;
 300 $crypto.=" crypto/conf/conf.h";
 301 $crypto.=" crypto/txt_db/txt_db.h";
 302
 303 $crypto.=" crypto/evp/evp.h" ; # unless $no_evp;
 304 $crypto.=" crypto/objects/objects.h";
 305 $crypto.=" crypto/pem/pem.h";
 306 #$crypto.=" crypto/meth/meth.h";
 307 $crypto.=" crypto/asn1/asn1.h";
 308 $crypto.=" crypto/asn1/asn1t.h";
 309 $crypto.=" crypto/asn1/asn1_mac.h";
 310 $crypto.=" crypto/err/err.h" ; # unless $no_err;
 311 $crypto.=" crypto/pkcs7/pkcs7.h";
 312 $crypto.=" crypto/pkcs12/pkcs12.h";
 313 $crypto.=" crypto/x509/x509.h";
 314 $crypto.=" crypto/x509/x509_vfy.h";
 315 $crypto.=" crypto/x509v3/x509v3.h";
 316 $crypto.=" crypto/ts/ts.h";
 317 $crypto.=" crypto/rand/rand.h";
 318 $crypto.=" crypto/comp/comp.h" ; # unless $no_comp;
 319 $crypto.=" crypto/ocsp/ocsp.h";
 320 $crypto.=" crypto/ui/ui.h crypto/ui/ui_compat.h";
 321 $crypto.=" crypto/krb5/krb5_asn.h";
 322 #$crypto.=" crypto/store/store.h";
 323 $crypto.=" crypto/pqueue/pqueue.h";
 324 $crypto.=" crypto/cms/cms.h";
 325 $crypto.=" crypto/jpake/jpake.h";
 326 $crypto.=" crypto/modes/modes.h";
 327 $crypto.=" fips/fips.h fips/rand/fips_rand.h";
 328
 329 my $symhacks="crypto/symhacks.h";
 330
 331 my @ssl_symbols = &do_defs("SSLEAY", $ssl, $symhacks);
 332 my @crypto_symbols = &do_defs("LIBEAY", $crypto, $symhacks);
 333
 334 if ($do_update) {
 335
 336 if ($do_ssl == 1) {
 337
 338         &maybe_add_info("SSLEAY",*ssl_list,@ssl_symbols);
 339         if ($do_rewrite == 1) {
 340                 open(OUT, ">$ssl_num");
 341                 &rewrite_numbers(*OUT,"SSLEAY",*ssl_list,@ssl_symbols);
 342         } else {
 343                 open(OUT, ">>$ssl_num");
 344         }
 345         &update_numbers(*OUT,"SSLEAY",*ssl_list,$max_ssl,@ssl_symbols);
 346         close OUT;
 347 }
 348
 349 if($do_crypto == 1) {
 350
 351         &maybe_add_info("LIBEAY",*crypto_list,@crypto_symbols);
 352         if ($do_rewrite == 1) {
 353                 open(OUT, ">$crypto_num");
 354                 &rewrite_numbers(*OUT,"LIBEAY",*crypto_list,@crypto_symbols);
 355         } else {
 356                 open(OUT, ">>$crypto_num");
 357         }
 358         &update_numbers(*OUT,"LIBEAY",*crypto_list,$max_crypto,@crypto_symbols);
 359         close OUT;
 360 }
 361
 362 } elsif ($do_checkexist) {
 363         &check_existing(*ssl_list, @ssl_symbols)
 364                 if $do_ssl == 1;
 365         &check_existing(*crypto_list, @crypto_symbols)
 366                 if $do_crypto == 1;
 367 } elsif ($do_ctest || $do_ctestall) {
 368
 369         print <<"EOF";
 370
 371 /* Test file to check all DEF file symbols are present by trying
 372  * to link to all of them. This is *not* intended to be run!
 373  */
 374
 375 int main()
 376 {
 377 EOF
 378         &print_test_file(*STDOUT,"SSLEAY",*ssl_list,$do_ctestall,@ssl_symbols)
 379                 if $do_ssl == 1;
 380
 381         &print_test_file(*STDOUT,"LIBEAY",*crypto_list,$do_ctestall,@crypto_symbols)
 382                 if $do_crypto == 1;
 383
 384         print "}\n";
 385
 386 } else {
 387
 388         &print_def_file(*STDOUT,$libname,*ssl_list,@ssl_symbols)
 389                 if $do_ssl == 1;
 390
 391         &print_def_file(*STDOUT,$libname,*crypto_list,@crypto_symbols)
 392                 if $do_crypto == 1;
 393
 394 }
 395
 396
 397 sub do_defs
 398 {
 399         my($name,$files,$symhacksfile)=@_;
 400         my $file;
 401         my @ret;
 402         my %syms;
 403         my %platform;           # For anything undefined, we assume ""
 404         my %kind;               # For anything undefined, we assume "FUNCTION"
 405         my %algorithm;          # For anything undefined, we assume ""
 406         my %variant;
 407         my %variant_cnt;        # To be able to allocate "name{n}" if "name"
 408                                 # is the same name as the original.
 409         my $cpp;
 410         my %unknown_algorithms = ();
 411
 412         foreach $file (split(/\s+/,$symhacksfile." ".$files))
 413                 {
 414                 print STDERR "DEBUG: starting on $file:\n" if $debug;
 415                 open(IN,"<$file") || die "unable to open $file:$!\n";
 416                 my $line = "", my $def= "";
 417                 my %tag = (
 418                         (map { $_ => 0 } @known_platforms),
 419                         (map { "OPENSSL_SYS_".$_ => 0 } @known_ossl_platforms),
 420                         (map { "OPENSSL_NO_".$_ => 0 } @known_algorithms),
 421                         NOPROTO         => 0,
 422                         PERL5           => 0,
 423                         _WINDLL         => 0,
 424                         CONST_STRICT    => 0,
 425                         TRUE            => 1,
 426                 );
 427                 my $symhacking = $file eq $symhacksfile;
 428                 my @current_platforms = ();
 429                 my @current_algorithms = ();
 430
 431                 # params: symbol, alias, platforms, kind
 432                 # The reason to put this subroutine in a variable is that
 433                 # it will otherwise create it's own, unshared, version of
 434                 # %tag and %variant...
 435                 my $make_variant = sub
 436                 {
 437                         my ($s, $a, $p, $k) = @_;
 438                         my ($a1, $a2);
 439
 440                         print STDERR "DEBUG: make_variant: Entered with ",$s,", ",$a,", ",(defined($p)?$p:""),", ",(defined($k)?$k:""),"\n" if $debug;
 441                         if (defined($p))
 442                         {
 443                                 $a1 = join(",",$p,
 444                                            grep(!/^$/,
 445                                                 map { $tag{$_} == 1 ? $_ : "" }
 446                                                 @known_platforms));
 447                         }
 448                         else
 449                         {
 450                                 $a1 = join(",",
 451                                            grep(!/^$/,
 452                                                 map { $tag{$_} == 1 ? $_ : "" }
 453                                                 @known_platforms));
 454                         }
 455                         $a2 = join(",",
 456                                    grep(!/^$/,
 457                                         map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ : "" }
 458                                         @known_ossl_platforms));
 459                         print STDERR "DEBUG: make_variant: a1 = $a1; a2 = $a2\n" if $debug;
 460                         if ($a1 eq "") { $a1 = $a2; }
 461                         elsif ($a1 ne "" && $a2 ne "") { $a1 .= ",".$a2; }
 462                         if ($a eq $s)
 463                         {
 464                                 if (!defined($variant_cnt{$s}))
 465                                 {
 466                                         $variant_cnt{$s} = 0;
 467                                 }
 468                                 $variant_cnt{$s}++;
 469                                 $a .= "{$variant_cnt{$s}}";
 470                         }
 471                         my $toadd = $a.":".$a1.(defined($k)?":".$k:"");
 472                         my $togrep = $s.'(\{[0-9]+\})?:'.$a1.(defined($k)?":".$k:"");
 473                         if (!grep(/^$togrep$/,
 474                                   split(/;/, defined($variant{$s})?$variant{$s}:""))) {
 475                                 if (defined($variant{$s})) { $variant{$s} .= ";"; }
 476                                 $variant{$s} .= $toadd;
 477                         }
 478                         print STDERR "DEBUG: make_variant: Exit with variant of ",$s," = ",$variant{$s},"\n" if $debug;
 479                 };
 480
 481                 print STDERR "DEBUG: parsing ----------\n" if $debug;
 482                 while(<IN>) {
 483                         if (/\/\* Error codes for the \w+ functions\. \*\//)
 484                                 {
 485                                 undef @tag;
 486                                 last;
 487                                 }
 488                         if ($line ne '') {
 489                                 $_ = $line . $_;
 490                                 $line = '';
 491                         }
 492
 493                         if (/\\$/) {
 494                                 chomp; # remove eol
 495                                 chop; # remove ending backslash
 496                                 $line = $_;
 497                                 next;
 498                         }
 499
 500                         if(/\/\*/) {
 501                                 if (not /\*\//) {       # multiline comment...
 502                                         $line = $_;     # ... just accumulate
 503                                         next;
 504                                 } else {
 505                                         s/\/\*.*?\*\///gs;# wipe it
 506                                 }
 507                         }
 508
 509                         if ($cpp) {
 510                                 $cpp++ if /^#\s*if/;
 511                                 $cpp-- if /^#\s*endif/;
 512                                 next;
 513                         }
 514                         $cpp = 1 if /^#.*ifdef.*cplusplus/;
 515
 516                         s/{[^{}]*}//gs;                      # ignore {} blocks
 517                         print STDERR "DEBUG: \$def=\"$def\"\n" if $debug && $def ne "";
 518                         print STDERR "DEBUG: \$_=\"$_\"\n" if $debug;
 519                         if (/^\#\s*ifndef\s+(.*)/) {
 520                                 push(@tag,"-");
 521                                 push(@tag,$1);
 522                                 $tag{$1}=-1;
 523                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
 524                         } elsif (/^\#\s*if\s+!defined\(([^\)]+)\)/) {
 525                                 push(@tag,"-");
 526                                 if (/^\#\s*if\s+(!defined\(([^\)]+)\)(\s+\&\&\s+!defined\(([^\)]+)\))*)$/) {
 527                                         my $tmp_1 = $1;
 528                                         my $tmp_;
 529                                         foreach $tmp_ (split '\&\&',$tmp_1) {
 530                                                 $tmp_ =~ /!defined\(([^\)]+)\)/;
 531                                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
 532                                                 push(@tag,$1);
 533                                                 $tag{$1}=-1;
 534                                         }
 535                                 } else {
 536                                         print STDERR "Warning: $file: complicated expression: $_" if $debug; # because it is O...
 537                                         print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
 538                                         push(@tag,$1);
 539                                         $tag{$1}=-1;
 540                                 }
 541                         } elsif (/^\#\s*ifdef\s+(\S*)/) {
 542                                 push(@tag,"-");
 543                                 push(@tag,$1);
 544                                 $tag{$1}=1;
 545                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
 546                         } elsif (/^\#\s*if\s+defined\(([^\)]+)\)/) {
 547                                 push(@tag,"-");
 548                                 if (/^\#\s*if\s+(defined\(([^\)]+)\)(\s+\|\|\s+defined\(([^\)]+)\))*)$/) {
 549                                         my $tmp_1 = $1;
 550                                         my $tmp_;
 551                                         foreach $tmp_ (split '\|\|',$tmp_1) {
 552                                                 $tmp_ =~ /defined\(([^\)]+)\)/;
 553                                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
 554                                                 push(@tag,$1);
 555                                                 $tag{$1}=1;
 556                                         }
 557                                 } else {
 558                                         print STDERR "Warning: $file: complicated expression: $_\n" if $debug; # because it is O...
 559                                         print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
 560                                         push(@tag,$1);
 561                                         $tag{$1}=1;
 562                                 }
 563                         } elsif (/^\#\s*error\s+(\w+) is disabled\./) {
 564                                 my $tag_i = $#tag;
 565                                 while($tag[$tag_i] ne "-") {
 566                                         if ($tag[$tag_i] eq "OPENSSL_NO_".$1) {
 567                                                 $tag{$tag[$tag_i]}=2;
 568                                                 print STDERR "DEBUG: $file: chaged tag $1 = 2\n" if $debug;
 569                                         }
 570                                         $tag_i--;
 571                                 }
 572                         } elsif (/^\#\s*endif/) {
 573                                 my $tag_i = $#tag;
 574                                 while($tag_i > 0 && $tag[$tag_i] ne "-") {
 575                                         my $t=$tag[$tag_i];
 576                                         print STDERR "DEBUG: \$t=\"$t\"\n" if $debug;
 577                                         if ($tag{$t}==2) {
 578                                                 $tag{$t}=-1;
 579                                         } else {
 580                                                 $tag{$t}=0;
 581                                         }
 582                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
 583                                         pop(@tag);
 584                                         if ($t =~ /^OPENSSL_NO_([A-Z0-9_]+)$/) {
 585                                                 $t=$1;
 586                                         } else {
 587                                                 $t="";
 588                                         }
 589                                         if ($t ne ""
 590                                             && !grep(/^$t$/, @known_algorithms)) {
 591                                                 $unknown_algorithms{$t} = 1;
 592                                                 #print STDERR "DEBUG: Added as unknown algorithm: $t\n" if $debug;
 593                                         }
 594                                         $tag_i--;
 595                                 }
 596                                 pop(@tag);
 597                         } elsif (/^\#\s*else/) {
 598                                 my $tag_i = $#tag;
 599                                 while($tag[$tag_i] ne "-") {
 600                                         my $t=$tag[$tag_i];
 601                                         $tag{$t}= -$tag{$t};
 602                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
 603                                         $tag_i--;
 604                                 }
 605                         } elsif (/^\#\s*if\s+1/) {
 606                                 push(@tag,"-");
 607                                 # Dummy tag
 608                                 push(@tag,"TRUE");
 609                                 $tag{"TRUE"}=1;
 610                                 print STDERR "DEBUG: $file: found 1\n" if $debug;
 611                         } elsif (/^\#\s*if\s+0/) {
 612                                 push(@tag,"-");
 613                                 # Dummy tag
 614                                 push(@tag,"TRUE");
 615                                 $tag{"TRUE"}=-1;
 616                                 print STDERR "DEBUG: $file: found 0\n" if $debug;
 617                         } elsif (/^\#\s*define\s+(\w+)\s+(\w+)/
 618                                  && $symhacking && $tag{'TRUE'} != -1) {
 619                                 # This is for aliasing.  When we find an alias,
 620                                 # we have to invert
 621                                 &$make_variant($1,$2);
 622                                 print STDERR "DEBUG: $file: defined $1 = $2\n" if $debug;
 623                         }
 624                         if (/^\#/) {
 625                                 @current_platforms =
 626                                     grep(!/^$/,
 627                                          map { $tag{$_} == 1 ? $_ :
 628                                                    $tag{$_} == -1 ? "!".$_  : "" }
 629                                          @known_platforms);
 630                                 push @current_platforms
 631                                     , grep(!/^$/,
 632                                            map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ :
 633                                                      $tag{"OPENSSL_SYS_".$_} == -1 ? "!".$_  : "" }
 634                                            @known_ossl_platforms);
 635                                 @current_algorithms =
 636                                     grep(!/^$/,
 637                                          map { $tag{"OPENSSL_NO_".$_} == -1 ? $_ : "" }
 638                                          @known_algorithms);
 639                                 $def .=
 640                                     "#INFO:"
 641                                         .join(',',@current_platforms).":"
 642                                             .join(',',@current_algorithms).";";
 643                                 next;
 644                         }
 645                         if ($tag{'TRUE'} != -1) {
 646                                 if (/^\s*DECLARE_STACK_OF\s*\(\s*(\w*)\s*\)/) {
 647                                         next;
 648                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 649                                         $def .= "int d2i_$3(void);";
 650                                         $def .= "int i2d_$3(void);";
 651                                         # Variant for platforms that do not
 652                                         # have to access globale variables
 653                                         # in shared libraries through functions
 654                                         $def .=
 655                                             "#INFO:"
 656                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 657                                                     .join(',',@current_algorithms).";";
 658                                         $def .= "OPENSSL_EXTERN int $2_it;";
 659                                         $def .=
 660                                             "#INFO:"
 661                                                 .join(',',@current_platforms).":"
 662                                                     .join(',',@current_algorithms).";";
 663                                         # Variant for platforms that have to
 664                                         # access globale variables in shared
 665                                         # libraries through functions
 666                                         &$make_variant("$2_it","$2_it",
 667                                                       "EXPORT_VAR_AS_FUNCTION",
 668                                                       "FUNCTION");
 669                                         next;
 670                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_fname\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 671                                         $def .= "int d2i_$3(void);";
 672                                         $def .= "int i2d_$3(void);";
 673                                         $def .= "int $3_free(void);";
 674                                         $def .= "int $3_new(void);";
 675                                         # Variant for platforms that do not
 676                                         # have to access globale variables
 677                                         # in shared libraries through functions
 678                                         $def .=
 679                                             "#INFO:"
 680                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 681                                                     .join(',',@current_algorithms).";";
 682                                         $def .= "OPENSSL_EXTERN int $2_it;";
 683                                         $def .=
 684                                             "#INFO:"
 685                                                 .join(',',@current_platforms).":"
 686                                                     .join(',',@current_algorithms).";";
 687                                         # Variant for platforms that have to
 688                                         # access globale variables in shared
 689                                         # libraries through functions
 690                                         &$make_variant("$2_it","$2_it",
 691                                                       "EXPORT_VAR_AS_FUNCTION",
 692                                                       "FUNCTION");
 693                                         next;
 694                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS\s*\(\s*(\w*)\s*\)/ ||
 695                                          /^\s*DECLARE_ASN1_FUNCTIONS_const\s*\(\s*(\w*)\s*\)/) {
 696                                         $def .= "int d2i_$1(void);";
 697                                         $def .= "int i2d_$1(void);";
 698                                         $def .= "int $1_free(void);";
 699                                         $def .= "int $1_new(void);";
 700                                         # Variant for platforms that do not
 701                                         # have to access globale variables
 702                                         # in shared libraries through functions
 703                                         $def .=
 704                                             "#INFO:"
 705                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 706                                                     .join(',',@current_algorithms).";";
 707                                         $def .= "OPENSSL_EXTERN int $1_it;";
 708                                         $def .=
 709                                             "#INFO:"
 710                                                 .join(',',@current_platforms).":"
 711                                                     .join(',',@current_algorithms).";";
 712                                         # Variant for platforms that have to
 713                                         # access globale variables in shared
 714                                         # libraries through functions
 715                                         &$make_variant("$1_it","$1_it",
 716                                                       "EXPORT_VAR_AS_FUNCTION",
 717                                                       "FUNCTION");
 718                                         next;
 719                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS_const\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 720                                         $def .= "int d2i_$2(void);";
 721                                         $def .= "int i2d_$2(void);";
 722                                         # Variant for platforms that do not
 723                                         # have to access globale variables
 724                                         # in shared libraries through functions
 725                                         $def .=
 726                                             "#INFO:"
 727                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 728                                                     .join(',',@current_algorithms).";";
 729                                         $def .= "OPENSSL_EXTERN int $2_it;";
 730                                         $def .=
 731                                             "#INFO:"
 732                                                 .join(',',@current_platforms).":"
 733                                                     .join(',',@current_algorithms).";";
 734                                         # Variant for platforms that have to
 735                                         # access globale variables in shared
 736                                         # libraries through functions
 737                                         &$make_variant("$2_it","$2_it",
 738                                                       "EXPORT_VAR_AS_FUNCTION",
 739                                                       "FUNCTION");
 740                                         next;
 741                                 } elsif (/^\s*DECLARE_ASN1_ALLOC_FUNCTIONS\s*\(\s*(\w*)\s*\)/) {
 742                                         $def .= "int $1_free(void);";
 743                                         $def .= "int $1_new(void);";
 744                                         next;
 745                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 746                                         $def .= "int d2i_$2(void);";
 747                                         $def .= "int i2d_$2(void);";
 748                                         $def .= "int $2_free(void);";
 749                                         $def .= "int $2_new(void);";
 750                                         # Variant for platforms that do not
 751                                         # have to access globale variables
 752                                         # in shared libraries through functions
 753                                         $def .=
 754                                             "#INFO:"
 755                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 756                                                     .join(',',@current_algorithms).";";
 757                                         $def .= "OPENSSL_EXTERN int $2_it;";
 758                                         $def .=
 759                                             "#INFO:"
 760                                                 .join(',',@current_platforms).":"
 761                                                     .join(',',@current_algorithms).";";
 762                                         # Variant for platforms that have to
 763                                         # access globale variables in shared
 764                                         # libraries through functions
 765                                         &$make_variant("$2_it","$2_it",
 766                                                       "EXPORT_VAR_AS_FUNCTION",
 767                                                       "FUNCTION");
 768                                         next;
 769                                 } elsif (/^\s*DECLARE_ASN1_ITEM\s*\(\s*(\w*)\s*\)/) {
 770                                         # Variant for platforms that do not
 771                                         # have to access globale variables
 772                                         # in shared libraries through functions
 773                                         $def .=
 774                                             "#INFO:"
 775                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 776                                                     .join(',',@current_algorithms).";";
 777                                         $def .= "OPENSSL_EXTERN int $1_it;";
 778                                         $def .=
 779                                             "#INFO:"
 780                                                 .join(',',@current_platforms).":"
 781                                                     .join(',',@current_algorithms).";";
 782                                         # Variant for platforms that have to
 783                                         # access globale variables in shared
 784                                         # libraries through functions
 785                                         &$make_variant("$1_it","$1_it",
 786                                                       "EXPORT_VAR_AS_FUNCTION",
 787                                                       "FUNCTION");
 788                                         next;
 789                                 } elsif (/^\s*DECLARE_ASN1_NDEF_FUNCTION\s*\(\s*(\w*)\s*\)/) {
 790                                         $def .= "int i2d_$1_NDEF(void);";
 791                                 } elsif (/^\s*DECLARE_ASN1_SET_OF\s*\(\s*(\w*)\s*\)/) {
 792                                         next;
 793                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION\s*\(\s*(\w*)\s*\)/) {
 794                                         $def .= "int $1_print_ctx(void);";
 795                                         next;
 796                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 797                                         $def .= "int $2_print_ctx(void);";
 798                                         next;
 799                                 } elsif (/^\s*DECLARE_PKCS12_STACK_OF\s*\(\s*(\w*)\s*\)/) {
 800                                         next;
 801                                 } elsif (/^DECLARE_PEM_rw\s*\(\s*(\w*)\s*,/ ||
 802                                          /^DECLARE_PEM_rw_cb\s*\(\s*(\w*)\s*,/ ||
 803                                          /^DECLARE_PEM_rw_const\s*\(\s*(\w*)\s*,/ ) {
 804                                         # Things not in Win16
 805                                         $def .=
 806                                             "#INFO:"
 807                                                 .join(',',"!WIN16",@current_platforms).":"
 808                                                     .join(',',@current_algorithms).";";
 809                                         $def .= "int PEM_read_$1(void);";
 810                                         $def .= "int PEM_write_$1(void);";
 811                                         $def .=
 812                                             "#INFO:"
 813                                                 .join(',',@current_platforms).":"
 814                                                     .join(',',@current_algorithms).";";
 815                                         # Things that are everywhere
 816                                         $def .= "int PEM_read_bio_$1(void);";
 817                                         $def .= "int PEM_write_bio_$1(void);";
 818                                         next;
 819                                 } elsif (/^DECLARE_PEM_write\s*\(\s*(\w*)\s*,/ ||
 820                                          /^DECLARE_PEM_write_cb\s*\(\s*(\w*)\s*,/ ) {
 821                                         # Things not in Win16
 822                                         $def .=
 823                                             "#INFO:"
 824                                                 .join(',',"!WIN16",@current_platforms).":"
 825                                                     .join(',',@current_algorithms).";";
 826                                         $def .= "int PEM_write_$1(void);";
 827                                         $def .=
 828                                             "#INFO:"
 829                                                 .join(',',@current_platforms).":"
 830                                                     .join(',',@current_algorithms).";";
 831                                         # Things that are everywhere
 832                                         $def .= "int PEM_write_bio_$1(void);";
 833                                         next;
 834                                 } elsif (/^DECLARE_PEM_read\s*\(\s*(\w*)\s*,/ ||
 835                                          /^DECLARE_PEM_read_cb\s*\(\s*(\w*)\s*,/ ) {
 836                                         # Things not in Win16
 837                                         $def .=
 838                                             "#INFO:"
 839                                                 .join(',',"!WIN16",@current_platforms).":"
 840                                                     .join(',',@current_algorithms).";";
 841                                         $def .= "int PEM_read_$1(void);";
 842                                         $def .=
 843                                             "#INFO:"
 844                                                 .join(',',@current_platforms).":"
 845                                                     .join(',',@current_algorithms).";";
 846                                         # Things that are everywhere
 847                                         $def .= "int PEM_read_bio_$1(void);";
 848                                         next;
 849                                 } elsif (/^OPENSSL_DECLARE_GLOBAL\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 850                                         # Variant for platforms that do not
 851                                         # have to access globale variables
 852                                         # in shared libraries through functions
 853                                         $def .=
 854                                             "#INFO:"
 855                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 856                                                     .join(',',@current_algorithms).";";
 857                                         $def .= "OPENSSL_EXTERN int _shadow_$2;";
 858                                         $def .=
 859                                             "#INFO:"
 860                                                 .join(',',@current_platforms).":"
 861                                                     .join(',',@current_algorithms).";";
 862                                         # Variant for platforms that have to
 863                                         # access globale variables in shared
 864                                         # libraries through functions
 865                                         &$make_variant("_shadow_$2","_shadow_$2",
 866                                                       "EXPORT_VAR_AS_FUNCTION",
 867                                                       "FUNCTION");
 868                                 } elsif ($tag{'CONST_STRICT'} != 1) {
 869                                         if (/\{|\/\*|\([^\)]*$/) {
 870                                                 $line = $_;
 871                                         } else {
 872                                                 $def .= $_;
 873                                         }
 874                                 }
 875                         }
 876                 }
 877                 close(IN);
 878
 879                 my $algs;
 880                 my $plays;
 881
 882                 print STDERR "DEBUG: postprocessing ----------\n" if $debug;
 883                 foreach (split /;/, $def) {
 884                         my $s; my $k = "FUNCTION"; my $p; my $a;
 885                         s/^[\n\s]*//g;
 886                         s/[\n\s]*$//g;
 887                         next if(/\#undef/);
 888                         next if(/typedef\W/);
 889                         next if(/\#define/);
 890
 891                         # Reduce argument lists to empty ()
 892                         # fold round brackets recursively: (t(*v)(t),t) -> (t{}{},t) -> {}
 893                         while(/\(.*\)/s) {
 894                                 s/\([^\(\)]+\)/\{\}/gs;
 895                                 s/\(\s*\*\s*(\w+)\s*\{\}\s*\)/$1/gs;    #(*f{}) -> f
 896                         }
 897                         # pretend as we didn't use curly braces: {} -> ()
 898                         s/\{\}/\(\)/gs;
 899
 900                         s/STACK_OF\(\)/void/gs;
 901                         s/LHASH_OF\(\)/void/gs;
 902
 903                         print STDERR "DEBUG: \$_ = \"$_\"\n" if $debug;
 904                         if (/^\#INFO:([^:]*):(.*)$/) {
 905                                 $plats = $1;
 906                                 $algs = $2;
 907                                 print STDERR "DEBUG: found info on platforms ($plats) and algorithms ($algs)\n" if $debug;
 908                                 next;
 909                         } elsif (/^\s*OPENSSL_EXTERN\s.*?(\w+(\{[0-9]+\})?)(\[[0-9]*\])*\s*$/) {
 910                                 $s = $1;
 911                                 $k = "VARIABLE";
 912                                 print STDERR "DEBUG: found external variable $s\n" if $debug;
 913                         } elsif (/TYPEDEF_\w+_OF/s) {
 914                                 next;
 915                         } elsif (/(\w+)\s*\(\).*/s) {   # first token prior [first] () is
 916                                 $s = $1;                # a function name!
 917                                 print STDERR "DEBUG: found function $s\n" if $debug;
 918                         } elsif (/\(/ and not (/=/)) {
 919                                 print STDERR "File $file: cannot parse: $_;\n";
 920                                 next;
 921                         } else {
 922                                 next;
 923                         }
 924
 925                         $syms{$s} = 1;
 926                         $kind{$s} = $k;
 927
 928                         $p = $plats;
 929                         $a = $algs;
 930                         $a .= ",BF" if($s =~ /EVP_bf/);
 931                         $a .= ",CAST" if($s =~ /EVP_cast/);
 932                         $a .= ",DES" if($s =~ /EVP_des/);
 933                         $a .= ",DSA" if($s =~ /EVP_dss/);
 934                         $a .= ",IDEA" if($s =~ /EVP_idea/);
 935                         $a .= ",MD2" if($s =~ /EVP_md2/);
 936                         $a .= ",MD4" if($s =~ /EVP_md4/);
 937                         $a .= ",MD5" if($s =~ /EVP_md5/);
 938                         $a .= ",RC2" if($s =~ /EVP_rc2/);
 939                         $a .= ",RC4" if($s =~ /EVP_rc4/);
 940                         $a .= ",RC5" if($s =~ /EVP_rc5/);
 941                         $a .= ",RIPEMD" if($s =~ /EVP_ripemd/);
 942                         $a .= ",SHA" if($s =~ /EVP_sha/);
 943                         $a .= ",RSA" if($s =~ /EVP_(Open|Seal)(Final|Init)/);
 944                         $a .= ",RSA" if($s =~ /PEM_Seal(Final|Init|Update)/);
 945                         $a .= ",RSA" if($s =~ /RSAPrivateKey/);
 946                         $a .= ",RSA" if($s =~ /SSLv23?_((client|server)_)?method/);
 947
 948                         $platform{$s} =
 949                             &reduce_platforms((defined($platform{$s})?$platform{$s}.',':"").$p);
 950                         $algorithm{$s} .= ','.$a;
 951
 952                         if (defined($variant{$s})) {
 953                                 foreach $v (split /;/,$variant{$s}) {
 954                                         (my $r, my $p, my $k) = split(/:/,$v);
 955                                         my $ip = join ',',map({ /^!(.*)$/ ? $1 : "!".$_ } split /,/, $p);
 956                                         $syms{$r} = 1;
 957                                         if (!defined($k)) { $k = $kind{$s}; }
 958                                         $kind{$r} = $k."(".$s.")";
 959                                         $algorithm{$r} = $algorithm{$s};
 960                                         $platform{$r} = &reduce_platforms($platform{$s}.",".$p.",".$p);
 961                                         $platform{$s} = &reduce_platforms($platform{$s}.','.$ip.','.$ip);
 962                                         print STDERR "DEBUG: \$variant{\"$s\"} = ",$v,"; \$r = $r; \$p = ",$platform{$r},"; \$a = ",$algorithm{$r},"; \$kind = ",$kind{$r},"\n" if $debug;
 963                                 }
 964                         }
 965                         print STDERR "DEBUG: \$s = $s; \$p = ",$platform{$s},"; \$a = ",$algorithm{$s},"; \$kind = ",$kind{$s},"\n" if $debug;
 966                 }
 967         }
 968
 969         # Prune the returned symbols
 970
 971         delete $syms{"bn_dump1"};
 972         $platform{"BIO_s_log"} .= ",!WIN32,!WIN16,!macintosh";
 973
 974         $platform{"PEM_read_NS_CERT_SEQ"} = "VMS";
 975         $platform{"PEM_write_NS_CERT_SEQ"} = "VMS";
 976         $platform{"PEM_read_P8_PRIV_KEY_INFO"} = "VMS";
 977         $platform{"PEM_write_P8_PRIV_KEY_INFO"} = "VMS";
 978         $platform{"EVP_sha384"} = "!VMSVAX";
 979         $platform{"EVP_sha512"} = "!VMSVAX";
 980         $platform{"SHA384_Init"} = "!VMSVAX";
 981         $platform{"SHA384_Transform"} = "!VMSVAX";
 982         $platform{"SHA384_Update"} = "!VMSVAX";
 983         $platform{"SHA384_Final"} = "!VMSVAX";
 984         $platform{"SHA384"} = "!VMSVAX";
 985         $platform{"SHA512_Init"} = "!VMSVAX";
 986         $platform{"SHA512_Transform"} = "!VMSVAX";
 987         $platform{"SHA512_Update"} = "!VMSVAX";
 988         $platform{"SHA512_Final"} = "!VMSVAX";
 989         $platform{"SHA512"} = "!VMSVAX";
 990
 991
 992         # Info we know about
 993
 994         push @ret, map { $_."\\".&info_string($_,"EXIST",
 995                                               $platform{$_},
 996                                               $kind{$_},
 997                                               $algorithm{$_}) } keys %syms;
 998
 999         if (keys %unknown_algorithms) {
1000                 print STDERR "WARNING: mkdef.pl doesn't know the following algorithms:\n";
1001                 print STDERR "\t",join("\n\t",keys %unknown_algorithms),"\n";
1002         }
1003         return(@ret);
1004 }
1005
1006 # Param: string of comma-separated platform-specs.
1007 sub reduce_platforms
1008 {
1009         my ($platforms) = @_;
1010         my $pl = defined($platforms) ? $platforms : "";
1011         my %p = map { $_ => 0 } split /,/, $pl;
1012         my $ret;
1013
1014         print STDERR "DEBUG: Entered reduce_platforms with \"$platforms\"\n"
1015             if $debug;
1016         # We do this, because if there's code like the following, it really
1017         # means the function exists in all cases and should therefore be
1018         # everywhere.  By increasing and decreasing, we may attain 0:
1019         #
1020         # ifndef WIN16
1021         #    int foo();
1022         # else
1023         #    int _fat foo();
1024         # endif
1025         foreach $platform (split /,/, $pl) {
1026                 if ($platform =~ /^!(.*)$/) {
1027                         $p{$1}--;
1028                 } else {
1029                         $p{$platform}++;
1030                 }
1031         }
1032         foreach $platform (keys %p) {
1033                 if ($p{$platform} == 0) { delete $p{$platform}; }
1034         }
1035
1036         delete $p{""};
1037
1038         $ret = join(',',sort(map { $p{$_} < 0 ? "!".$_ : $_ } keys %p));
1039         print STDERR "DEBUG: Exiting reduce_platforms with \"$ret\"\n"
1040             if $debug;
1041         return $ret;
1042 }
1043
1044 sub info_string {
1045         (my $symbol, my $exist, my $platforms, my $kind, my $algorithms) = @_;
1046
1047         my %a = defined($algorithms) ?
1048             map { $_ => 1 } split /,/, $algorithms : ();
1049         my $k = defined($kind) ? $kind : "FUNCTION";
1050         my $ret;
1051         my $p = &reduce_platforms($platforms);
1052
1053         delete $a{""};
1054
1055         $ret = $exist;
1056         $ret .= ":".$p;
1057         $ret .= ":".$k;
1058         $ret .= ":".join(',',sort keys %a);
1059         return $ret;
1060 }
1061
1062 sub maybe_add_info {
1063         (my $name, *nums, my @symbols) = @_;
1064         my $sym;
1065         my $new_info = 0;
1066         my %syms=();
1067
1068         print STDERR "Updating $name info\n";
1069         foreach $sym (@symbols) {
1070                 (my $s, my $i) = split /\\/, $sym;
1071                 if (defined($nums{$s})) {
1072                         $i =~ s/^(.*?:.*?:\w+)(\(\w+\))?/$1/;
1073                         (my $n, my $dummy) = split /\\/, $nums{$s};
1074                         if (!defined($dummy) || $i ne $dummy) {
1075                                 $nums{$s} = $n."\\".$i;
1076                                 $new_info++;
1077                                 print STDERR "DEBUG: maybe_add_info for $s: \"$dummy\" => \"$i\"\n" if $debug;
1078                         }
1079                 }
1080                 $syms{$s} = 1;
1081         }
1082
1083         my @s=sort { &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n") } keys %nums;
1084         foreach $sym (@s) {
1085                 (my $n, my $i) = split /\\/, $nums{$sym};
1086                 if (!defined($syms{$sym}) && $i !~ /^NOEXIST:/) {
1087                         $new_info++;
1088                         print STDERR "DEBUG: maybe_add_info for $sym: -> undefined\n" if $debug;
1089                 }
1090         }
1091         if ($new_info) {
1092                 print STDERR "$new_info old symbols got an info update\n";
1093                 if (!$do_rewrite) {
1094                         print STDERR "You should do a rewrite to fix this.\n";
1095                 }
1096         } else {
1097                 print STDERR "No old symbols needed info update\n";
1098         }
1099 }
1100
1101 # Param: string of comma-separated keywords, each possibly prefixed with a "!"
1102 sub is_valid
1103 {
1104         my ($keywords_txt,$platforms) = @_;
1105         my (@keywords) = split /,/,$keywords_txt;
1106         my ($falsesum, $truesum) = (0, 1);
1107
1108         # Param: one keyword
1109         sub recognise
1110         {
1111                 my ($keyword,$platforms) = @_;
1112
1113                 if ($platforms) {
1114                         # platforms
1115                         if ($keyword eq "VMSVAX" && $VMSVAX) { return 1; }
1116                         if ($keyword eq "VMSNonVAX" && $VMSNonVAX) { return 1; }
1117                         if ($keyword eq "VMS" && $VMS) { return 1; }
1118                         if ($keyword eq "WIN32" && $W32) { return 1; }
1119                         if ($keyword eq "WIN16" && $W16) { return 1; }
1120                         if ($keyword eq "WINNT" && $NT) { return 1; }
1121                         if ($keyword eq "OS2" && $OS2) { return 1; }
1122                         # Special platforms:
1123                         # EXPORT_VAR_AS_FUNCTION means that global variables
1124                         # will be represented as functions.  This currently
1125                         # only happens on VMS-VAX.
1126                         if ($keyword eq "EXPORT_VAR_AS_FUNCTION" && ($VMSVAX || $W32 || $W16)) {
1127                                 return 1;
1128                         }
1129                         if ($keyword eq "OPENSSL_FIPS" && $fips) {
1130                                 return 1;
1131                         }
1132                         if ($keyword eq "ZLIB" && $zlib) { return 1; }
1133                         return 0;
1134                 } else {
1135                         # algorithms
1136                         if ($keyword eq "RC2" && $no_rc2) { return 0; }
1137                         if ($keyword eq "RC4" && $no_rc4) { return 0; }
1138                         if ($keyword eq "RC5" && $no_rc5) { return 0; }
1139                         if ($keyword eq "IDEA" && $no_idea) { return 0; }
1140                         if ($keyword eq "DES" && $no_des) { return 0; }
1141                         if ($keyword eq "BF" && $no_bf) { return 0; }
1142                         if ($keyword eq "CAST" && $no_cast) { return 0; }
1143                         if ($keyword eq "MD2" && $no_md2) { return 0; }
1144                         if ($keyword eq "MD4" && $no_md4) { return 0; }
1145                         if ($keyword eq "MD5" && $no_md5) { return 0; }
1146                         if ($keyword eq "SHA" && $no_sha) { return 0; }
1147                         if ($keyword eq "RIPEMD" && $no_ripemd) { return 0; }
1148                         if ($keyword eq "MDC2" && $no_mdc2) { return 0; }
1149                         if ($keyword eq "WHIRLPOOL" && $no_whirlpool) { return 0; }
1150                         if ($keyword eq "RSA" && $no_rsa) { return 0; }
1151                         if ($keyword eq "DSA" && $no_dsa) { return 0; }
1152                         if ($keyword eq "DH" && $no_dh) { return 0; }
1153                         if ($keyword eq "EC" && $no_ec) { return 0; }
1154                         if ($keyword eq "ECDSA" && $no_ecdsa) { return 0; }
1155                         if ($keyword eq "ECDH" && $no_ecdh) { return 0; }
1156                         if ($keyword eq "HMAC" && $no_hmac) { return 0; }
1157                         if ($keyword eq "AES" && $no_aes) { return 0; }
1158                         if ($keyword eq "CAMELLIA" && $no_camellia) { return 0; }
1159                         if ($keyword eq "SEED" && $no_seed) { return 0; }
1160                         if ($keyword eq "EVP" && $no_evp) { return 0; }
1161                         if ($keyword eq "LHASH" && $no_lhash) { return 0; }
1162                         if ($keyword eq "STACK" && $no_stack) { return 0; }
1163                         if ($keyword eq "ERR" && $no_err) { return 0; }
1164                         if ($keyword eq "BUFFER" && $no_buffer) { return 0; }
1165                         if ($keyword eq "BIO" && $no_bio) { return 0; }
1166                         if ($keyword eq "COMP" && $no_comp) { return 0; }
1167                         if ($keyword eq "DSO" && $no_dso) { return 0; }
1168                         if ($keyword eq "KRB5" && $no_krb5) { return 0; }
1169                         if ($keyword eq "ENGINE" && $no_engine) { return 0; }
1170                         if ($keyword eq "HW" && $no_hw) { return 0; }
1171                         if ($keyword eq "FP_API" && $no_fp_api) { return 0; }
1172                         if ($keyword eq "STATIC_ENGINE" && $no_static_engine) { return 0; }
1173                         if ($keyword eq "GMP" && $no_gmp) { return 0; }
1174                         if ($keyword eq "RFC3779" && $no_rfc3779) { return 0; }
1175                         if ($keyword eq "TLSEXT" && $no_tlsext) { return 0; }
1176                         if ($keyword eq "PSK" && $no_psk) { return 0; }
1177                         if ($keyword eq "CMS" && $no_cms) { return 0; }
1178                         if ($keyword eq "EC2M" && $no_ec2m) { return 0; }
1179                         if ($keyword eq "NEXTPROTONEG" && $no_nextprotoneg) { return 0; }
1180                         if ($keyword eq "SSL2" && $no_ssl2) { return 0; }
1181                         if ($keyword eq "CAPIENG" && $no_capieng) { return 0; }
1182                         if ($keyword eq "JPAKE" && $no_jpake) { return 0; }
1183                         if ($keyword eq "DEPRECATED" && $no_deprecated) { return 0; }
1184
1185                         # Nothing recognise as true
1186                         return 1;
1187                 }
1188         }
1189
1190         foreach $k (@keywords) {
1191                 if ($k =~ /^!(.*)$/) {
1192                         $falsesum += &recognise($1,$platforms);
1193                 } else {
1194                         $truesum *= &recognise($k,$platforms);
1195                 }
1196         }
1197         print STDERR "DEBUG: [",$#keywords,",",$#keywords < 0,"] is_valid($keywords_txt) => (\!$falsesum) && $truesum = ",(!$falsesum) && $truesum,"\n" if $debug;
1198         return (!$falsesum) && $truesum;
1199 }
1200
1201 sub print_test_file
1202 {
1203         (*OUT,my $name,*nums,my $testall,my @symbols)=@_;
1204         my $n = 1; my @e; my @r;
1205         my $sym; my $prev = ""; my $prefSSLeay;
1206
1207         (@e)=grep(/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1208         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:.*/ && !/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1209         @symbols=((sort @e),(sort @r));
1210
1211         foreach $sym (@symbols) {
1212                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1213                 my $v = 0;
1214                 $v = 1 if $i=~ /^.*?:.*?:VARIABLE/;
1215                 my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1216                 my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1217                 if (!defined($nums{$s})) {
1218                         print STDERR "Warning: $s does not have a number assigned\n"
1219                             if(!$do_update);
1220                 } elsif (is_valid($p,1) && is_valid($a,0)) {
1221                         my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1222                         if ($prev eq $s2) {
1223                                 print OUT "\t/* The following has already appeared previously */\n";
1224                                 print STDERR "Warning: Symbol '",$s2,"' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1225                         }
1226                         $prev = $s2;    # To warn about duplicates...
1227
1228                         ($nn,$ni)=($nums{$s2} =~ /^(.*?)\\(.*)$/);
1229                         if ($v) {
1230                                 print OUT "\textern int $s2; /* type unknown */ /* $nn $ni */\n";
1231                         } else {
1232                                 print OUT "\textern int $s2(); /* type unknown */ /* $nn $ni */\n";
1233                         }
1234                 }
1235         }
1236 }
1237
1238 sub get_version {
1239    local *MF;
1240    my $v = '?';
1241    open MF, 'Makefile' or return $v;
1242    while (<MF>) {
1243      $v = $1, last if /^VERSION=(.*?)\s*$/;
1244    }
1245    close MF;
1246    return $v;
1247 }
1248
1249 sub print_def_file
1250 {
1251         (*OUT,my $name,*nums,my @symbols)=@_;
1252         my $n = 1; my @e; my @r; my @v; my $prev="";
1253         my $liboptions="";
1254         my $libname = $name;
1255         my $http_vendor = 'www.openssl.org/';
1256         my $version = get_version();
1257         my $what = "OpenSSL: implementation of Secure Socket Layer";
1258         my $description = "$what $version, $name - http://$http_vendor";
1259
1260         if ($W32)
1261                 { $libname.="32"; }
1262         elsif ($W16)
1263                 { $libname.="16"; }
1264         elsif ($OS2)
1265                 { # DLL names should not clash on the whole system.
1266                   # However, they should not have any particular relationship
1267                   # to the name of the static library.  Chose descriptive names
1268                   # (must be at most 8 chars).
1269                   my %translate = (ssl => 'open_ssl', crypto => 'cryptssl');
1270                   $libname = $translate{$name} || $name;
1271                   $liboptions = <<EOO;
1272 INITINSTANCE
1273 DATA MULTIPLE NONSHARED
1274 EOO
1275                   # Vendor field can't contain colon, drat; so we omit http://
1276                   $description = "\@#$http_vendor:$version#\@$what; DLL for library $name.  Build for EMX -Zmtd";
1277                 }
1278
1279         print OUT <<"EOF";
1280 ;
1281 ; Definition file for the DLL version of the $name library from OpenSSL
1282 ;
1283
1284 LIBRARY         $libname        $liboptions
1285
1286 EOF
1287
1288         if ($W16) {
1289                 print <<"EOF";
1290 CODE            PRELOAD MOVEABLE
1291 DATA            PRELOAD MOVEABLE SINGLE
1292
1293 EXETYPE         WINDOWS
1294
1295 HEAPSIZE        4096
1296 STACKSIZE       8192
1297
1298 EOF
1299         }
1300
1301         print "EXPORTS\n";
1302
1303         (@e)=grep(/^SSLeay(\{[0-9]+\})?\\.*?:.*?:FUNCTION/,@symbols);
1304         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:FUNCTION/ && !/^SSLeay(\{[0-9]+\})?\\.*?:.*?:FUNCTION/,@symbols);
1305         (@v)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:VARIABLE/,@symbols);
1306         @symbols=((sort @e),(sort @r), (sort @v));
1307
1308
1309         foreach $sym (@symbols) {
1310                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1311                 my $v = 0;
1312                 $v = 1 if $i =~ /^.*?:.*?:VARIABLE/;
1313                 if (!defined($nums{$s})) {
1314                         printf STDERR "Warning: $s does not have a number assigned\n"
1315                             if(!$do_update);
1316                 } else {
1317                         (my $n, my $dummy) = split /\\/, $nums{$s};
1318                         my %pf = ();
1319                         my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1320                         my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1321                         if (is_valid($p,1) && is_valid($a,0)) {
1322                                 my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1323                                 if ($prev eq $s2) {
1324                                         print STDERR "Warning: Symbol '",$s2,"' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1325                                 }
1326                                 $prev = $s2;    # To warn about duplicates...
1327                                 if($v && !$OS2) {
1328                                         printf OUT "    %s%-39s @%-8d DATA\n",($W32)?"":"_",$s2,$n;
1329                                 } else {
1330                                         printf OUT "    %s%-39s @%d\n",($W32||$OS2)?"":"_",$s2,$n;
1331                                 }
1332                         }
1333                 }
1334         }
1335         printf OUT "\n";
1336 }
1337
1338 sub load_numbers
1339 {
1340         my($name)=@_;
1341         my(@a,%ret);
1342
1343         $max_num = 0;
1344         $num_noinfo = 0;
1345         $prev = "";
1346         $prev_cnt = 0;
1347
1348         open(IN,"<$name") || die "unable to open $name:$!\n";
1349         while (<IN>) {
1350                 chop;
1351                 s/#.*$//;
1352                 next if /^\s*$/;
1353                 @a=split;
1354                 if (defined $ret{$a[0]}) {
1355                         # This is actually perfectly OK
1356                         #print STDERR "Warning: Symbol '",$a[0],"' redefined. old=",$ret{$a[0]},", new=",$a[1],"\n";
1357                 }
1358                 if ($max_num > $a[1]) {
1359                         print STDERR "Warning: Number decreased from ",$max_num," to ",$a[1],"\n";
1360                 }
1361                 elsif ($max_num == $a[1]) {
1362                         # This is actually perfectly OK
1363                         #print STDERR "Warning: Symbol ",$a[0]," has same number as previous ",$prev,": ",$a[1],"\n";
1364                         if ($a[0] eq $prev) {
1365                                 $prev_cnt++;
1366                                 $a[0] .= "{$prev_cnt}";
1367                         }
1368                 }
1369                 else {
1370                         $prev_cnt = 0;
1371                 }
1372                 if ($#a < 2) {
1373                         # Existence will be proven later, in do_defs
1374                         $ret{$a[0]}=$a[1];
1375                         $num_noinfo++;
1376                 } else {
1377                         $ret{$a[0]}=$a[1]."\\".$a[2]; # \\ is a special marker
1378                 }
1379                 $max_num = $a[1] if $a[1] > $max_num;
1380                 $prev=$a[0];
1381         }
1382         if ($num_noinfo) {
1383                 print STDERR "Warning: $num_noinfo symbols were without info.";
1384                 if ($do_rewrite) {
1385                         printf STDERR "  The rewrite will fix this.\n";
1386                 } else {
1387                         printf STDERR "  You should do a rewrite to fix this.\n";
1388                 }
1389         }
1390         close(IN);
1391         return(%ret);
1392 }
1393
1394 sub parse_number
1395 {
1396         (my $str, my $what) = @_;
1397         (my $n, my $i) = split(/\\/,$str);
1398         if ($what eq "n") {
1399                 return $n;
1400         } else {
1401                 return $i;
1402         }
1403 }
1404
1405 sub rewrite_numbers
1406 {
1407         (*OUT,$name,*nums,@symbols)=@_;
1408         my $thing;
1409
1410         print STDERR "Rewriting $name\n";
1411
1412         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1413         my $r; my %r; my %rsyms;
1414         foreach $r (@r) {
1415                 (my $s, my $i) = split /\\/, $r;
1416                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1417                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1418                 $r{$a} = $s."\\".$i;
1419                 $rsyms{$s} = 1;
1420         }
1421
1422         my %syms = ();
1423         foreach $_ (@symbols) {
1424                 (my $n, my $i) = split /\\/;
1425                 $syms{$n} = 1;
1426         }
1427
1428         my @s=sort {
1429             &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n")
1430             || $a cmp $b
1431         } keys %nums;
1432         foreach $sym (@s) {
1433                 (my $n, my $i) = split /\\/, $nums{$sym};
1434                 next if defined($i) && $i =~ /^.*?:.*?:\w+\(\w+\)/;
1435                 next if defined($rsyms{$sym});
1436                 print STDERR "DEBUG: rewrite_numbers for sym = ",$sym,": i = ",$i,", n = ",$n,", rsym{sym} = ",$rsyms{$sym},"syms{sym} = ",$syms{$sym},"\n" if $debug;
1437                 $i="NOEXIST::FUNCTION:"
1438                         if !defined($i) || $i eq "" || !defined($syms{$sym});
1439                 my $s2 = $sym;
1440                 $s2 =~ s/\{[0-9]+\}$//;
1441                 printf OUT "%s%-39s %d\t%s\n","",$s2,$n,$i;
1442                 if (exists $r{$sym}) {
1443                         (my $s, $i) = split /\\/,$r{$sym};
1444                         my $s2 = $s;
1445                         $s2 =~ s/\{[0-9]+\}$//;
1446                         printf OUT "%s%-39s %d\t%s\n","",$s2,$n,$i;
1447                 }
1448         }
1449 }
1450
1451 sub update_numbers
1452 {
1453         (*OUT,$name,*nums,my $start_num, my @symbols)=@_;
1454         my $new_syms = 0;
1455
1456         print STDERR "Updating $name numbers\n";
1457
1458         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1459         my $r; my %r; my %rsyms;
1460         foreach $r (@r) {
1461                 (my $s, my $i) = split /\\/, $r;
1462                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1463                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1464                 $r{$a} = $s."\\".$i;
1465                 $rsyms{$s} = 1;
1466         }
1467
1468         foreach $sym (@symbols) {
1469                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1470                 next if $i =~ /^.*?:.*?:\w+\(\w+\)/;
1471                 next if defined($rsyms{$sym});
1472                 die "ERROR: Symbol $sym had no info attached to it."
1473                     if $i eq "";
1474                 if (!exists $nums{$s}) {
1475                         $new_syms++;
1476                         my $s2 = $s;
1477                         $s2 =~ s/\{[0-9]+\}$//;
1478                         printf OUT "%s%-39s %d\t%s\n","",$s2, ++$start_num,$i;
1479                         if (exists $r{$s}) {
1480                                 ($s, $i) = split /\\/,$r{$s};
1481                                 $s =~ s/\{[0-9]+\}$//;
1482                                 printf OUT "%s%-39s %d\t%s\n","",$s, $start_num,$i;
1483                         }
1484                 }
1485         }
1486         if($new_syms) {
1487                 print STDERR "$new_syms New symbols added\n";
1488         } else {
1489                 print STDERR "No New symbols Added\n";
1490         }
1491 }
1492
1493 sub check_existing
1494 {
1495         (*nums, my @symbols)=@_;
1496         my %existing; my @remaining;
1497         @remaining=();
1498         foreach $sym (@symbols) {
1499                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1500                 $existing{$s}=1;
1501         }
1502         foreach $sym (keys %nums) {
1503                 if (!exists $existing{$sym}) {
1504                         push @remaining, $sym;
1505                 }
1506         }
1507         if(@remaining) {
1508                 print STDERR "The following symbols do not seem to exist:\n";
1509                 foreach $sym (@remaining) {
1510                         print STDERR "\t",$sym,"\n";
1511                 }
1512         }
1513 }
1514