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" );
  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",
  88                          "HMAC", "AES", "CAMELLIA", "SEED", "GOST",
  89                          # ECP_NISTP224
  90                          "EC_NISTP224_64_GCC_128",
  91                          # Envelope "algorithms"
  92                          "EVP", "X509", "ASN1_TYPEDEFS",
  93                          # Helper "algorithms"
  94                          "BIO", "COMP", "BUFFER", "LHASH", "STACK", "ERR",
  95                          "LOCKING",
  96                          # External "algorithms"
  97                          "FP_API", "STDIO", "SOCK", "KRB5", "DGRAM",
  98                          # Engines
  99                          "STATIC_ENGINE", "ENGINE", "HW", "GMP",
 100                          # RFC3779
 101                          "RFC3779",
 102                          # TLS
 103                          "TLSEXT", "PSK", "SRP",
 104                          # CMS
 105                          "CMS",
 106                          # CryptoAPI Engine
 107                          "CAPIENG",
 108                          # SSL v2
 109                          "SSL2",
 110                          # JPAKE
 111                          "JPAKE",
 112                          # Deprecated functions
 113                          "DEPRECATED",
 114                          # Hide SSL internals
 115                          "SSL_INTERN");
 116
 117 my $options="";
 118 open(IN,"<Makefile") || die "unable to open Makefile!\n";
 119 while(<IN>) {
 120     $options=$1 if (/^OPTIONS=(.*)$/);
 121 }
 122 close(IN);
 123
 124 # The following ciphers may be excluded (by Configure). This means functions
 125 # defined with ifndef(NO_XXX) are not included in the .def file, and everything
 126 # in directory xxx is ignored.
 127 my $no_rc2; my $no_rc4; my $no_rc5; my $no_idea; my $no_des; my $no_bf;
 128 my $no_cast; my $no_whirlpool; my $no_camellia; my $no_seed;
 129 my $no_md2; my $no_md4; my $no_md5; my $no_sha; my $no_ripemd; my $no_mdc2;
 130 my $no_rsa; my $no_dsa; my $no_dh; my $no_hmac=0; my $no_aes; my $no_krb5;
 131 my $no_ec; my $no_ecdsa; my $no_ecdh; my $no_engine; my $no_hw;
 132 my $no_fp_api; my $no_static_engine=1; my $no_gmp; my $no_deprecated;
 133 my $no_rfc3779; my $no_psk; my $no_tlsext; my $no_cms; my $no_capieng;
 134 my $no_jpake; my $no_srp; my $no_ssl2; my $no_nistp_gcc;
 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 $_ eq "OS2";
 158         if ($_ eq "zlib" || $_ eq "enable-zlib" || $_ eq "zlib-dynamic"
 159                          || $_ eq "enable-zlib-dynamic") {
 160                 $zlib = 1;
 161         }
 162
 163         $do_ssl=1 if $_ eq "ssleay";
 164         if ($_ eq "ssl") {
 165                 $do_ssl=1;
 166                 $libname=$_
 167         }
 168         $do_crypto=1 if $_ eq "libeay";
 169         if ($_ eq "crypto") {
 170                 $do_crypto=1;
 171                 $libname=$_;
 172         }
 173         $no_static_engine=1 if $_ eq "no-static-engine";
 174         $no_static_engine=0 if $_ eq "enable-static-engine";
 175         $do_update=1 if $_ eq "update";
 176         $do_rewrite=1 if $_ eq "rewrite";
 177         $do_ctest=1 if $_ eq "ctest";
 178         $do_ctestall=1 if $_ eq "ctestall";
 179         $do_checkexist=1 if $_ eq "exist";
 180         #$safe_stack_def=1 if $_ eq "-DDEBUG_SAFESTACK";
 181
 182         if    (/^no-rc2$/)      { $no_rc2=1; }
 183         elsif (/^no-rc4$/)      { $no_rc4=1; }
 184         elsif (/^no-rc5$/)      { $no_rc5=1; }
 185         elsif (/^no-idea$/)     { $no_idea=1; }
 186         elsif (/^no-des$/)      { $no_des=1; $no_mdc2=1; }
 187         elsif (/^no-bf$/)       { $no_bf=1; }
 188         elsif (/^no-cast$/)     { $no_cast=1; }
 189         elsif (/^no-whirlpool$/)     { $no_whirlpool=1; }
 190         elsif (/^no-md2$/)      { $no_md2=1; }
 191         elsif (/^no-md4$/)      { $no_md4=1; }
 192         elsif (/^no-md5$/)      { $no_md5=1; }
 193         elsif (/^no-sha$/)      { $no_sha=1; }
 194         elsif (/^no-ripemd$/)   { $no_ripemd=1; }
 195         elsif (/^no-mdc2$/)     { $no_mdc2=1; }
 196         elsif (/^no-rsa$/)      { $no_rsa=1; }
 197         elsif (/^no-dsa$/)      { $no_dsa=1; }
 198         elsif (/^no-dh$/)       { $no_dh=1; }
 199         elsif (/^no-ec$/)       { $no_ec=1; }
 200         elsif (/^no-ecdsa$/)    { $no_ecdsa=1; }
 201         elsif (/^no-ecdh$/)     { $no_ecdh=1; }
 202         elsif (/^no-hmac$/)     { $no_hmac=1; }
 203         elsif (/^no-aes$/)      { $no_aes=1; }
 204         elsif (/^no-camellia$/) { $no_camellia=1; }
 205         elsif (/^no-seed$/)     { $no_seed=1; }
 206         elsif (/^no-evp$/)      { $no_evp=1; }
 207         elsif (/^no-lhash$/)    { $no_lhash=1; }
 208         elsif (/^no-stack$/)    { $no_stack=1; }
 209         elsif (/^no-err$/)      { $no_err=1; }
 210         elsif (/^no-buffer$/)   { $no_buffer=1; }
 211         elsif (/^no-bio$/)      { $no_bio=1; }
 212         #elsif (/^no-locking$/) { $no_locking=1; }
 213         elsif (/^no-comp$/)     { $no_comp=1; }
 214         elsif (/^no-dso$/)      { $no_dso=1; }
 215         elsif (/^no-krb5$/)     { $no_krb5=1; }
 216         elsif (/^no-engine$/)   { $no_engine=1; }
 217         elsif (/^no-hw$/)       { $no_hw=1; }
 218         elsif (/^no-gmp$/)      { $no_gmp=1; }
 219         elsif (/^no-rfc3779$/)  { $no_rfc3779=1; }
 220         elsif (/^no-tlsext$/)   { $no_tlsext=1; }
 221         elsif (/^no-cms$/)      { $no_cms=1; }
 222         elsif (/^no-nistp224-64-gcc-128$/)      { $no_nistp_gcc=1; }
 223         elsif (/^no-ssl2$/)     { $no_ssl2=1; }
 224         elsif (/^no-capieng$/)  { $no_capieng=1; }
 225         elsif (/^no-jpake$/)    { $no_jpake=1; }
 226         elsif (/^no-srp$/)      { $no_srp=1; }
 227         }
 228
 229
 230 if (!$libname) {
 231         if ($do_ssl) {
 232                 $libname="SSLEAY";
 233         }
 234         if ($do_crypto) {
 235                 $libname="LIBEAY";
 236         }
 237 }
 238
 239 # If no platform is given, assume WIN32
 240 if ($W32 + $W16 + $VMS + $OS2 == 0) {
 241         $W32 = 1;
 242 }
 243
 244 # Add extra knowledge
 245 if ($W16) {
 246         $no_fp_api=1;
 247 }
 248
 249 if (!$do_ssl && !$do_crypto)
 250         {
 251         print STDERR "usage: $0 ( ssl | crypto ) [ 16 | 32 | NT | OS2 ]\n";
 252         exit(1);
 253         }
 254
 255 %ssl_list=&load_numbers($ssl_num);
 256 $max_ssl = $max_num;
 257 %crypto_list=&load_numbers($crypto_num);
 258 $max_crypto = $max_num;
 259
 260 my $ssl="ssl/ssl.h";
 261 $ssl.=" ssl/kssl.h";
 262 $ssl.=" ssl/tls1.h";
 263
 264 my $crypto ="crypto/crypto.h";
 265 $crypto.=" crypto/o_dir.h";
 266 $crypto.=" crypto/o_str.h";
 267 $crypto.=" crypto/o_time.h";
 268 $crypto.=" crypto/des/des.h crypto/des/des_old.h" ; # unless $no_des;
 269 $crypto.=" crypto/idea/idea.h" ; # unless $no_idea;
 270 $crypto.=" crypto/rc4/rc4.h" ; # unless $no_rc4;
 271 $crypto.=" crypto/rc5/rc5.h" ; # unless $no_rc5;
 272 $crypto.=" crypto/rc2/rc2.h" ; # unless $no_rc2;
 273 $crypto.=" crypto/bf/blowfish.h" ; # unless $no_bf;
 274 $crypto.=" crypto/cast/cast.h" ; # unless $no_cast;
 275 $crypto.=" crypto/whrlpool/whrlpool.h" ;
 276 $crypto.=" crypto/md2/md2.h" ; # unless $no_md2;
 277 $crypto.=" crypto/md4/md4.h" ; # unless $no_md4;
 278 $crypto.=" crypto/md5/md5.h" ; # unless $no_md5;
 279 $crypto.=" crypto/mdc2/mdc2.h" ; # unless $no_mdc2;
 280 $crypto.=" crypto/sha/sha.h" ; # unless $no_sha;
 281 $crypto.=" crypto/ripemd/ripemd.h" ; # unless $no_ripemd;
 282 $crypto.=" crypto/aes/aes.h" ; # unless $no_aes;
 283 $crypto.=" crypto/camellia/camellia.h" ; # unless $no_camellia;
 284 $crypto.=" crypto/seed/seed.h"; # unless $no_seed;
 285
 286 $crypto.=" crypto/bn/bn.h";
 287 $crypto.=" crypto/rsa/rsa.h" ; # unless $no_rsa;
 288 $crypto.=" crypto/dsa/dsa.h" ; # unless $no_dsa;
 289 $crypto.=" crypto/dh/dh.h" ; # unless $no_dh;
 290 $crypto.=" crypto/ec/ec.h" ; # unless $no_ec;
 291 $crypto.=" crypto/ecdsa/ecdsa.h" ; # unless $no_ecdsa;
 292 $crypto.=" crypto/ecdh/ecdh.h" ; # unless $no_ecdh;
 293 $crypto.=" crypto/hmac/hmac.h" ; # unless $no_hmac;
 294
 295 $crypto.=" crypto/engine/engine.h"; # unless $no_engine;
 296 $crypto.=" crypto/stack/stack.h" ; # unless $no_stack;
 297 $crypto.=" crypto/buffer/buffer.h" ; # unless $no_buffer;
 298 $crypto.=" crypto/bio/bio.h" ; # unless $no_bio;
 299 $crypto.=" crypto/dso/dso.h" ; # unless $no_dso;
 300 $crypto.=" crypto/lhash/lhash.h" ; # unless $no_lhash;
 301 $crypto.=" crypto/conf/conf.h";
 302 $crypto.=" crypto/txt_db/txt_db.h";
 303
 304 $crypto.=" crypto/evp/evp.h" ; # unless $no_evp;
 305 $crypto.=" crypto/objects/objects.h";
 306 $crypto.=" crypto/pem/pem.h";
 307 #$crypto.=" crypto/meth/meth.h";
 308 $crypto.=" crypto/asn1/asn1.h";
 309 $crypto.=" crypto/asn1/asn1t.h";
 310 $crypto.=" crypto/asn1/asn1_mac.h";
 311 $crypto.=" crypto/err/err.h" ; # unless $no_err;
 312 $crypto.=" crypto/pkcs7/pkcs7.h";
 313 $crypto.=" crypto/pkcs12/pkcs12.h";
 314 $crypto.=" crypto/x509/x509.h";
 315 $crypto.=" crypto/x509/x509_vfy.h";
 316 $crypto.=" crypto/x509v3/x509v3.h";
 317 $crypto.=" crypto/ts/ts.h";
 318 $crypto.=" crypto/rand/rand.h";
 319 $crypto.=" crypto/comp/comp.h" ; # unless $no_comp;
 320 $crypto.=" crypto/ocsp/ocsp.h";
 321 $crypto.=" crypto/ui/ui.h crypto/ui/ui_compat.h";
 322 $crypto.=" crypto/krb5/krb5_asn.h";
 323 #$crypto.=" crypto/store/store.h";
 324 $crypto.=" crypto/pqueue/pqueue.h";
 325 $crypto.=" crypto/cms/cms.h";
 326 $crypto.=" crypto/jpake/jpake.h";
 327 $crypto.=" crypto/modes/modes.h";
 328 $crypto.=" crypto/srp/srp.h";
 329
 330 my $symhacks="crypto/symhacks.h";
 331
 332 my @ssl_symbols = &do_defs("SSLEAY", $ssl, $symhacks);
 333 my @crypto_symbols = &do_defs("LIBEAY", $crypto, $symhacks);
 334
 335 if ($do_update) {
 336
 337 if ($do_ssl == 1) {
 338
 339         &maybe_add_info("SSLEAY",*ssl_list,@ssl_symbols);
 340         if ($do_rewrite == 1) {
 341                 open(OUT, ">$ssl_num");
 342                 &rewrite_numbers(*OUT,"SSLEAY",*ssl_list,@ssl_symbols);
 343         } else {
 344                 open(OUT, ">>$ssl_num");
 345         }
 346         &update_numbers(*OUT,"SSLEAY",*ssl_list,$max_ssl,@ssl_symbols);
 347         close OUT;
 348 }
 349
 350 if($do_crypto == 1) {
 351
 352         &maybe_add_info("LIBEAY",*crypto_list,@crypto_symbols);
 353         if ($do_rewrite == 1) {
 354                 open(OUT, ">$crypto_num");
 355                 &rewrite_numbers(*OUT,"LIBEAY",*crypto_list,@crypto_symbols);
 356         } else {
 357                 open(OUT, ">>$crypto_num");
 358         }
 359         &update_numbers(*OUT,"LIBEAY",*crypto_list,$max_crypto,@crypto_symbols);
 360         close OUT;
 361 }
 362
 363 } elsif ($do_checkexist) {
 364         &check_existing(*ssl_list, @ssl_symbols)
 365                 if $do_ssl == 1;
 366         &check_existing(*crypto_list, @crypto_symbols)
 367                 if $do_crypto == 1;
 368 } elsif ($do_ctest || $do_ctestall) {
 369
 370         print <<"EOF";
 371
 372 /* Test file to check all DEF file symbols are present by trying
 373  * to link to all of them. This is *not* intended to be run!
 374  */
 375
 376 int main()
 377 {
 378 EOF
 379         &print_test_file(*STDOUT,"SSLEAY",*ssl_list,$do_ctestall,@ssl_symbols)
 380                 if $do_ssl == 1;
 381
 382         &print_test_file(*STDOUT,"LIBEAY",*crypto_list,$do_ctestall,@crypto_symbols)
 383                 if $do_crypto == 1;
 384
 385         print "}\n";
 386
 387 } else {
 388
 389         &print_def_file(*STDOUT,$libname,*ssl_list,@ssl_symbols)
 390                 if $do_ssl == 1;
 391
 392         &print_def_file(*STDOUT,$libname,*crypto_list,@crypto_symbols)
 393                 if $do_crypto == 1;
 394
 395 }
 396
 397
 398 sub do_defs
 399 {
 400         my($name,$files,$symhacksfile)=@_;
 401         my $file;
 402         my @ret;
 403         my %syms;
 404         my %platform;           # For anything undefined, we assume ""
 405         my %kind;               # For anything undefined, we assume "FUNCTION"
 406         my %algorithm;          # For anything undefined, we assume ""
 407         my %variant;
 408         my %variant_cnt;        # To be able to allocate "name{n}" if "name"
 409                                 # is the same name as the original.
 410         my $cpp;
 411         my %unknown_algorithms = ();
 412
 413         foreach $file (split(/\s+/,$symhacksfile." ".$files))
 414                 {
 415                 print STDERR "DEBUG: starting on $file:\n" if $debug;
 416                 open(IN,"<$file") || die "unable to open $file:$!\n";
 417                 my $line = "", my $def= "";
 418                 my %tag = (
 419                         (map { $_ => 0 } @known_platforms),
 420                         (map { "OPENSSL_SYS_".$_ => 0 } @known_ossl_platforms),
 421                         (map { "OPENSSL_NO_".$_ => 0 } @known_algorithms),
 422                         NOPROTO         => 0,
 423                         PERL5           => 0,
 424                         _WINDLL         => 0,
 425                         CONST_STRICT    => 0,
 426                         TRUE            => 1,
 427                 );
 428                 my $symhacking = $file eq $symhacksfile;
 429                 my @current_platforms = ();
 430                 my @current_algorithms = ();
 431
 432                 # params: symbol, alias, platforms, kind
 433                 # The reason to put this subroutine in a variable is that
 434                 # it will otherwise create it's own, unshared, version of
 435                 # %tag and %variant...
 436                 my $make_variant = sub
 437                 {
 438                         my ($s, $a, $p, $k) = @_;
 439                         my ($a1, $a2);
 440
 441                         print STDERR "DEBUG: make_variant: Entered with ",$s,", ",$a,", ",(defined($p)?$p:""),", ",(defined($k)?$k:""),"\n" if $debug;
 442                         if (defined($p))
 443                         {
 444                                 $a1 = join(",",$p,
 445                                            grep(!/^$/,
 446                                                 map { $tag{$_} == 1 ? $_ : "" }
 447                                                 @known_platforms));
 448                         }
 449                         else
 450                         {
 451                                 $a1 = join(",",
 452                                            grep(!/^$/,
 453                                                 map { $tag{$_} == 1 ? $_ : "" }
 454                                                 @known_platforms));
 455                         }
 456                         $a2 = join(",",
 457                                    grep(!/^$/,
 458                                         map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ : "" }
 459                                         @known_ossl_platforms));
 460                         print STDERR "DEBUG: make_variant: a1 = $a1; a2 = $a2\n" if $debug;
 461                         if ($a1 eq "") { $a1 = $a2; }
 462                         elsif ($a1 ne "" && $a2 ne "") { $a1 .= ",".$a2; }
 463                         if ($a eq $s)
 464                         {
 465                                 if (!defined($variant_cnt{$s}))
 466                                 {
 467                                         $variant_cnt{$s} = 0;
 468                                 }
 469                                 $variant_cnt{$s}++;
 470                                 $a .= "{$variant_cnt{$s}}";
 471                         }
 472                         my $toadd = $a.":".$a1.(defined($k)?":".$k:"");
 473                         my $togrep = $s.'(\{[0-9]+\})?:'.$a1.(defined($k)?":".$k:"");
 474                         if (!grep(/^$togrep$/,
 475                                   split(/;/, defined($variant{$s})?$variant{$s}:""))) {
 476                                 if (defined($variant{$s})) { $variant{$s} .= ";"; }
 477                                 $variant{$s} .= $toadd;
 478                         }
 479                         print STDERR "DEBUG: make_variant: Exit with variant of ",$s," = ",$variant{$s},"\n" if $debug;
 480                 };
 481
 482                 print STDERR "DEBUG: parsing ----------\n" if $debug;
 483                 while(<IN>) {
 484                         if (/\/\* Error codes for the \w+ functions\. \*\//)
 485                                 {
 486                                 undef @tag;
 487                                 last;
 488                                 }
 489                         if ($line ne '') {
 490                                 $_ = $line . $_;
 491                                 $line = '';
 492                         }
 493
 494                         if (/\\$/) {
 495                                 chomp; # remove eol
 496                                 chop; # remove ending backslash
 497                                 $line = $_;
 498                                 next;
 499                         }
 500
 501                         if(/\/\*/) {
 502                                 if (not /\*\//) {       # multiline comment...
 503                                         $line = $_;     # ... just accumulate
 504                                         next;
 505                                 } else {
 506                                         s/\/\*.*?\*\///gs;# wipe it
 507                                 }
 508                         }
 509
 510                         if ($cpp) {
 511                                 $cpp++ if /^#\s*if/;
 512                                 $cpp-- if /^#\s*endif/;
 513                                 next;
 514                         }
 515                         $cpp = 1 if /^#.*ifdef.*cplusplus/;
 516
 517                         s/{[^{}]*}//gs;                      # ignore {} blocks
 518                         print STDERR "DEBUG: \$def=\"$def\"\n" if $debug && $def ne "";
 519                         print STDERR "DEBUG: \$_=\"$_\"\n" if $debug;
 520                         if (/^\#\s*ifndef\s+(.*)/) {
 521                                 push(@tag,"-");
 522                                 push(@tag,$1);
 523                                 $tag{$1}=-1;
 524                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
 525                         } elsif (/^\#\s*if\s+!defined\(([^\)]+)\)/) {
 526                                 push(@tag,"-");
 527                                 if (/^\#\s*if\s+(!defined\(([^\)]+)\)(\s+\&\&\s+!defined\(([^\)]+)\))*)$/) {
 528                                         my $tmp_1 = $1;
 529                                         my $tmp_;
 530                                         foreach $tmp_ (split '\&\&',$tmp_1) {
 531                                                 $tmp_ =~ /!defined\(([^\)]+)\)/;
 532                                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
 533                                                 push(@tag,$1);
 534                                                 $tag{$1}=-1;
 535                                         }
 536                                 } else {
 537                                         print STDERR "Warning: $file: complicated expression: $_" if $debug; # because it is O...
 538                                         print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
 539                                         push(@tag,$1);
 540                                         $tag{$1}=-1;
 541                                 }
 542                         } elsif (/^\#\s*ifdef\s+(\S*)/) {
 543                                 push(@tag,"-");
 544                                 push(@tag,$1);
 545                                 $tag{$1}=1;
 546                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
 547                         } elsif (/^\#\s*if\s+defined\(([^\)]+)\)/) {
 548                                 push(@tag,"-");
 549                                 if (/^\#\s*if\s+(defined\(([^\)]+)\)(\s+\|\|\s+defined\(([^\)]+)\))*)$/) {
 550                                         my $tmp_1 = $1;
 551                                         my $tmp_;
 552                                         foreach $tmp_ (split '\|\|',$tmp_1) {
 553                                                 $tmp_ =~ /defined\(([^\)]+)\)/;
 554                                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
 555                                                 push(@tag,$1);
 556                                                 $tag{$1}=1;
 557                                         }
 558                                 } else {
 559                                         print STDERR "Warning: $file: complicated expression: $_\n" if $debug; # because it is O...
 560                                         print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
 561                                         push(@tag,$1);
 562                                         $tag{$1}=1;
 563                                 }
 564                         } elsif (/^\#\s*error\s+(\w+) is disabled\./) {
 565                                 my $tag_i = $#tag;
 566                                 while($tag[$tag_i] ne "-") {
 567                                         if ($tag[$tag_i] eq "OPENSSL_NO_".$1) {
 568                                                 $tag{$tag[$tag_i]}=2;
 569                                                 print STDERR "DEBUG: $file: chaged tag $1 = 2\n" if $debug;
 570                                         }
 571                                         $tag_i--;
 572                                 }
 573                         } elsif (/^\#\s*endif/) {
 574                                 my $tag_i = $#tag;
 575                                 while($tag_i > 0 && $tag[$tag_i] ne "-") {
 576                                         my $t=$tag[$tag_i];
 577                                         print STDERR "DEBUG: \$t=\"$t\"\n" if $debug;
 578                                         if ($tag{$t}==2) {
 579                                                 $tag{$t}=-1;
 580                                         } else {
 581                                                 $tag{$t}=0;
 582                                         }
 583                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
 584                                         pop(@tag);
 585                                         if ($t =~ /^OPENSSL_NO_([A-Z0-9_]+)$/) {
 586                                                 $t=$1;
 587                                         } else {
 588                                                 $t="";
 589                                         }
 590                                         if ($t ne ""
 591                                             && !grep(/^$t$/, @known_algorithms)) {
 592                                                 $unknown_algorithms{$t} = 1;
 593                                                 #print STDERR "DEBUG: Added as unknown algorithm: $t\n" if $debug;
 594                                         }
 595                                         $tag_i--;
 596                                 }
 597                                 pop(@tag);
 598                         } elsif (/^\#\s*else/) {
 599                                 my $tag_i = $#tag;
 600                                 while($tag[$tag_i] ne "-") {
 601                                         my $t=$tag[$tag_i];
 602                                         $tag{$t}= -$tag{$t};
 603                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
 604                                         $tag_i--;
 605                                 }
 606                         } elsif (/^\#\s*if\s+1/) {
 607                                 push(@tag,"-");
 608                                 # Dummy tag
 609                                 push(@tag,"TRUE");
 610                                 $tag{"TRUE"}=1;
 611                                 print STDERR "DEBUG: $file: found 1\n" if $debug;
 612                         } elsif (/^\#\s*if\s+0/) {
 613                                 push(@tag,"-");
 614                                 # Dummy tag
 615                                 push(@tag,"TRUE");
 616                                 $tag{"TRUE"}=-1;
 617                                 print STDERR "DEBUG: $file: found 0\n" if $debug;
 618                         } elsif (/^\#\s*define\s+(\w+)\s+(\w+)/
 619                                  && $symhacking && $tag{'TRUE'} != -1) {
 620                                 # This is for aliasing.  When we find an alias,
 621                                 # we have to invert
 622                                 &$make_variant($1,$2);
 623                                 print STDERR "DEBUG: $file: defined $1 = $2\n" if $debug;
 624                         }
 625                         if (/^\#/) {
 626                                 @current_platforms =
 627                                     grep(!/^$/,
 628                                          map { $tag{$_} == 1 ? $_ :
 629                                                    $tag{$_} == -1 ? "!".$_  : "" }
 630                                          @known_platforms);
 631                                 push @current_platforms
 632                                     , grep(!/^$/,
 633                                            map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ :
 634                                                      $tag{"OPENSSL_SYS_".$_} == -1 ? "!".$_  : "" }
 635                                            @known_ossl_platforms);
 636                                 @current_algorithms =
 637                                     grep(!/^$/,
 638                                          map { $tag{"OPENSSL_NO_".$_} == -1 ? $_ : "" }
 639                                          @known_algorithms);
 640                                 $def .=
 641                                     "#INFO:"
 642                                         .join(',',@current_platforms).":"
 643                                             .join(',',@current_algorithms).";";
 644                                 next;
 645                         }
 646                         if ($tag{'TRUE'} != -1) {
 647                                 if (/^\s*DECLARE_STACK_OF\s*\(\s*(\w*)\s*\)/) {
 648                                         next;
 649                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 650                                         $def .= "int d2i_$3(void);";
 651                                         $def .= "int i2d_$3(void);";
 652                                         # Variant for platforms that do not
 653                                         # have to access globale variables
 654                                         # in shared libraries through functions
 655                                         $def .=
 656                                             "#INFO:"
 657                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 658                                                     .join(',',@current_algorithms).";";
 659                                         $def .= "OPENSSL_EXTERN int $2_it;";
 660                                         $def .=
 661                                             "#INFO:"
 662                                                 .join(',',@current_platforms).":"
 663                                                     .join(',',@current_algorithms).";";
 664                                         # Variant for platforms that have to
 665                                         # access globale variables in shared
 666                                         # libraries through functions
 667                                         &$make_variant("$2_it","$2_it",
 668                                                       "EXPORT_VAR_AS_FUNCTION",
 669                                                       "FUNCTION");
 670                                         next;
 671                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_fname\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 672                                         $def .= "int d2i_$3(void);";
 673                                         $def .= "int i2d_$3(void);";
 674                                         $def .= "int $3_free(void);";
 675                                         $def .= "int $3_new(void);";
 676                                         # Variant for platforms that do not
 677                                         # have to access globale variables
 678                                         # in shared libraries through functions
 679                                         $def .=
 680                                             "#INFO:"
 681                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 682                                                     .join(',',@current_algorithms).";";
 683                                         $def .= "OPENSSL_EXTERN int $2_it;";
 684                                         $def .=
 685                                             "#INFO:"
 686                                                 .join(',',@current_platforms).":"
 687                                                     .join(',',@current_algorithms).";";
 688                                         # Variant for platforms that have to
 689                                         # access globale variables in shared
 690                                         # libraries through functions
 691                                         &$make_variant("$2_it","$2_it",
 692                                                       "EXPORT_VAR_AS_FUNCTION",
 693                                                       "FUNCTION");
 694                                         next;
 695                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS\s*\(\s*(\w*)\s*\)/ ||
 696                                          /^\s*DECLARE_ASN1_FUNCTIONS_const\s*\(\s*(\w*)\s*\)/) {
 697                                         $def .= "int d2i_$1(void);";
 698                                         $def .= "int i2d_$1(void);";
 699                                         $def .= "int $1_free(void);";
 700                                         $def .= "int $1_new(void);";
 701                                         # Variant for platforms that do not
 702                                         # have to access globale variables
 703                                         # in shared libraries through functions
 704                                         $def .=
 705                                             "#INFO:"
 706                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 707                                                     .join(',',@current_algorithms).";";
 708                                         $def .= "OPENSSL_EXTERN int $1_it;";
 709                                         $def .=
 710                                             "#INFO:"
 711                                                 .join(',',@current_platforms).":"
 712                                                     .join(',',@current_algorithms).";";
 713                                         # Variant for platforms that have to
 714                                         # access globale variables in shared
 715                                         # libraries through functions
 716                                         &$make_variant("$1_it","$1_it",
 717                                                       "EXPORT_VAR_AS_FUNCTION",
 718                                                       "FUNCTION");
 719                                         next;
 720                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS_const\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 721                                         $def .= "int d2i_$2(void);";
 722                                         $def .= "int i2d_$2(void);";
 723                                         # Variant for platforms that do not
 724                                         # have to access globale variables
 725                                         # in shared libraries through functions
 726                                         $def .=
 727                                             "#INFO:"
 728                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 729                                                     .join(',',@current_algorithms).";";
 730                                         $def .= "OPENSSL_EXTERN int $2_it;";
 731                                         $def .=
 732                                             "#INFO:"
 733                                                 .join(',',@current_platforms).":"
 734                                                     .join(',',@current_algorithms).";";
 735                                         # Variant for platforms that have to
 736                                         # access globale variables in shared
 737                                         # libraries through functions
 738                                         &$make_variant("$2_it","$2_it",
 739                                                       "EXPORT_VAR_AS_FUNCTION",
 740                                                       "FUNCTION");
 741                                         next;
 742                                 } elsif (/^\s*DECLARE_ASN1_ALLOC_FUNCTIONS\s*\(\s*(\w*)\s*\)/) {
 743                                         $def .= "int $1_free(void);";
 744                                         $def .= "int $1_new(void);";
 745                                         next;
 746                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 747                                         $def .= "int d2i_$2(void);";
 748                                         $def .= "int i2d_$2(void);";
 749                                         $def .= "int $2_free(void);";
 750                                         $def .= "int $2_new(void);";
 751                                         # Variant for platforms that do not
 752                                         # have to access globale variables
 753                                         # in shared libraries through functions
 754                                         $def .=
 755                                             "#INFO:"
 756                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 757                                                     .join(',',@current_algorithms).";";
 758                                         $def .= "OPENSSL_EXTERN int $2_it;";
 759                                         $def .=
 760                                             "#INFO:"
 761                                                 .join(',',@current_platforms).":"
 762                                                     .join(',',@current_algorithms).";";
 763                                         # Variant for platforms that have to
 764                                         # access globale variables in shared
 765                                         # libraries through functions
 766                                         &$make_variant("$2_it","$2_it",
 767                                                       "EXPORT_VAR_AS_FUNCTION",
 768                                                       "FUNCTION");
 769                                         next;
 770                                 } elsif (/^\s*DECLARE_ASN1_ITEM\s*\(\s*(\w*)\s*\)/) {
 771                                         # Variant for platforms that do not
 772                                         # have to access globale variables
 773                                         # in shared libraries through functions
 774                                         $def .=
 775                                             "#INFO:"
 776                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 777                                                     .join(',',@current_algorithms).";";
 778                                         $def .= "OPENSSL_EXTERN int $1_it;";
 779                                         $def .=
 780                                             "#INFO:"
 781                                                 .join(',',@current_platforms).":"
 782                                                     .join(',',@current_algorithms).";";
 783                                         # Variant for platforms that have to
 784                                         # access globale variables in shared
 785                                         # libraries through functions
 786                                         &$make_variant("$1_it","$1_it",
 787                                                       "EXPORT_VAR_AS_FUNCTION",
 788                                                       "FUNCTION");
 789                                         next;
 790                                 } elsif (/^\s*DECLARE_ASN1_NDEF_FUNCTION\s*\(\s*(\w*)\s*\)/) {
 791                                         $def .= "int i2d_$1_NDEF(void);";
 792                                 } elsif (/^\s*DECLARE_ASN1_SET_OF\s*\(\s*(\w*)\s*\)/) {
 793                                         next;
 794                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION\s*\(\s*(\w*)\s*\)/) {
 795                                         $def .= "int $1_print_ctx(void);";
 796                                         next;
 797                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 798                                         $def .= "int $2_print_ctx(void);";
 799                                         next;
 800                                 } elsif (/^\s*DECLARE_PKCS12_STACK_OF\s*\(\s*(\w*)\s*\)/) {
 801                                         next;
 802                                 } elsif (/^DECLARE_PEM_rw\s*\(\s*(\w*)\s*,/ ||
 803                                          /^DECLARE_PEM_rw_cb\s*\(\s*(\w*)\s*,/ ||
 804                                          /^DECLARE_PEM_rw_const\s*\(\s*(\w*)\s*,/ ) {
 805                                         # Things not in Win16
 806                                         $def .=
 807                                             "#INFO:"
 808                                                 .join(',',"!WIN16",@current_platforms).":"
 809                                                     .join(',',@current_algorithms).";";
 810                                         $def .= "int PEM_read_$1(void);";
 811                                         $def .= "int PEM_write_$1(void);";
 812                                         $def .=
 813                                             "#INFO:"
 814                                                 .join(',',@current_platforms).":"
 815                                                     .join(',',@current_algorithms).";";
 816                                         # Things that are everywhere
 817                                         $def .= "int PEM_read_bio_$1(void);";
 818                                         $def .= "int PEM_write_bio_$1(void);";
 819                                         next;
 820                                 } elsif (/^DECLARE_PEM_write\s*\(\s*(\w*)\s*,/ ||
 821                                          /^DECLARE_PEM_write_cb\s*\(\s*(\w*)\s*,/ ) {
 822                                         # Things not in Win16
 823                                         $def .=
 824                                             "#INFO:"
 825                                                 .join(',',"!WIN16",@current_platforms).":"
 826                                                     .join(',',@current_algorithms).";";
 827                                         $def .= "int PEM_write_$1(void);";
 828                                         $def .=
 829                                             "#INFO:"
 830                                                 .join(',',@current_platforms).":"
 831                                                     .join(',',@current_algorithms).";";
 832                                         # Things that are everywhere
 833                                         $def .= "int PEM_write_bio_$1(void);";
 834                                         next;
 835                                 } elsif (/^DECLARE_PEM_read\s*\(\s*(\w*)\s*,/ ||
 836                                          /^DECLARE_PEM_read_cb\s*\(\s*(\w*)\s*,/ ) {
 837                                         # Things not in Win16
 838                                         $def .=
 839                                             "#INFO:"
 840                                                 .join(',',"!WIN16",@current_platforms).":"
 841                                                     .join(',',@current_algorithms).";";
 842                                         $def .= "int PEM_read_$1(void);";
 843                                         $def .=
 844                                             "#INFO:"
 845                                                 .join(',',@current_platforms).":"
 846                                                     .join(',',@current_algorithms).";";
 847                                         # Things that are everywhere
 848                                         $def .= "int PEM_read_bio_$1(void);";
 849                                         next;
 850                                 } elsif (/^OPENSSL_DECLARE_GLOBAL\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 851                                         # Variant for platforms that do not
 852                                         # have to access globale variables
 853                                         # in shared libraries through functions
 854                                         $def .=
 855                                             "#INFO:"
 856                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 857                                                     .join(',',@current_algorithms).";";
 858                                         $def .= "OPENSSL_EXTERN int _shadow_$2;";
 859                                         $def .=
 860                                             "#INFO:"
 861                                                 .join(',',@current_platforms).":"
 862                                                     .join(',',@current_algorithms).";";
 863                                         # Variant for platforms that have to
 864                                         # access globale variables in shared
 865                                         # libraries through functions
 866                                         &$make_variant("_shadow_$2","_shadow_$2",
 867                                                       "EXPORT_VAR_AS_FUNCTION",
 868                                                       "FUNCTION");
 869                                 } elsif ($tag{'CONST_STRICT'} != 1) {
 870                                         if (/\{|\/\*|\([^\)]*$/) {
 871                                                 $line = $_;
 872                                         } else {
 873                                                 $def .= $_;
 874                                         }
 875                                 }
 876                         }
 877                 }
 878                 close(IN);
 879
 880                 my $algs;
 881                 my $plays;
 882
 883                 print STDERR "DEBUG: postprocessing ----------\n" if $debug;
 884                 foreach (split /;/, $def) {
 885                         my $s; my $k = "FUNCTION"; my $p; my $a;
 886                         s/^[\n\s]*//g;
 887                         s/[\n\s]*$//g;
 888                         next if(/\#undef/);
 889                         next if(/typedef\W/);
 890                         next if(/\#define/);
 891
 892                         # Reduce argument lists to empty ()
 893                         # fold round brackets recursively: (t(*v)(t),t) -> (t{}{},t) -> {}
 894                         while(/\(.*\)/s) {
 895                                 s/\([^\(\)]+\)/\{\}/gs;
 896                                 s/\(\s*\*\s*(\w+)\s*\{\}\s*\)/$1/gs;    #(*f{}) -> f
 897                         }
 898                         # pretend as we didn't use curly braces: {} -> ()
 899                         s/\{\}/\(\)/gs;
 900
 901                         s/STACK_OF\(\)/void/gs;
 902                         s/LHASH_OF\(\)/void/gs;
 903
 904                         print STDERR "DEBUG: \$_ = \"$_\"\n" if $debug;
 905                         if (/^\#INFO:([^:]*):(.*)$/) {
 906                                 $plats = $1;
 907                                 $algs = $2;
 908                                 print STDERR "DEBUG: found info on platforms ($plats) and algorithms ($algs)\n" if $debug;
 909                                 next;
 910                         } elsif (/^\s*OPENSSL_EXTERN\s.*?(\w+(\{[0-9]+\})?)(\[[0-9]*\])*\s*$/) {
 911                                 $s = $1;
 912                                 $k = "VARIABLE";
 913                                 print STDERR "DEBUG: found external variable $s\n" if $debug;
 914                         } elsif (/TYPEDEF_\w+_OF/s) {
 915                                 next;
 916                         } elsif (/(\w+)\s*\(\).*/s) {   # first token prior [first] () is
 917                                 $s = $1;                # a function name!
 918                                 print STDERR "DEBUG: found function $s\n" if $debug;
 919                         } elsif (/\(/ and not (/=/)) {
 920                                 print STDERR "File $file: cannot parse: $_;\n";
 921                                 next;
 922                         } else {
 923                                 next;
 924                         }
 925
 926                         $syms{$s} = 1;
 927                         $kind{$s} = $k;
 928
 929                         $p = $plats;
 930                         $a = $algs;
 931                         $a .= ",BF" if($s =~ /EVP_bf/);
 932                         $a .= ",CAST" if($s =~ /EVP_cast/);
 933                         $a .= ",DES" if($s =~ /EVP_des/);
 934                         $a .= ",DSA" if($s =~ /EVP_dss/);
 935                         $a .= ",IDEA" if($s =~ /EVP_idea/);
 936                         $a .= ",MD2" if($s =~ /EVP_md2/);
 937                         $a .= ",MD4" if($s =~ /EVP_md4/);
 938                         $a .= ",MD5" if($s =~ /EVP_md5/);
 939                         $a .= ",RC2" if($s =~ /EVP_rc2/);
 940                         $a .= ",RC4" if($s =~ /EVP_rc4/);
 941                         $a .= ",RC5" if($s =~ /EVP_rc5/);
 942                         $a .= ",RIPEMD" if($s =~ /EVP_ripemd/);
 943                         $a .= ",SHA" if($s =~ /EVP_sha/);
 944                         $a .= ",RSA" if($s =~ /EVP_(Open|Seal)(Final|Init)/);
 945                         $a .= ",RSA" if($s =~ /PEM_Seal(Final|Init|Update)/);
 946                         $a .= ",RSA" if($s =~ /RSAPrivateKey/);
 947                         $a .= ",RSA" if($s =~ /SSLv23?_((client|server)_)?method/);
 948
 949                         $platform{$s} =
 950                             &reduce_platforms((defined($platform{$s})?$platform{$s}.',':"").$p);
 951                         $algorithm{$s} .= ','.$a;
 952
 953                         if (defined($variant{$s})) {
 954                                 foreach $v (split /;/,$variant{$s}) {
 955                                         (my $r, my $p, my $k) = split(/:/,$v);
 956                                         my $ip = join ',',map({ /^!(.*)$/ ? $1 : "!".$_ } split /,/, $p);
 957                                         $syms{$r} = 1;
 958                                         if (!defined($k)) { $k = $kind{$s}; }
 959                                         $kind{$r} = $k."(".$s.")";
 960                                         $algorithm{$r} = $algorithm{$s};
 961                                         $platform{$r} = &reduce_platforms($platform{$s}.",".$p.",".$p);
 962                                         $platform{$s} = &reduce_platforms($platform{$s}.','.$ip.','.$ip);
 963                                         print STDERR "DEBUG: \$variant{\"$s\"} = ",$v,"; \$r = $r; \$p = ",$platform{$r},"; \$a = ",$algorithm{$r},"; \$kind = ",$kind{$r},"\n" if $debug;
 964                                 }
 965                         }
 966                         print STDERR "DEBUG: \$s = $s; \$p = ",$platform{$s},"; \$a = ",$algorithm{$s},"; \$kind = ",$kind{$s},"\n" if $debug;
 967                 }
 968         }
 969
 970         # Prune the returned symbols
 971
 972         delete $syms{"bn_dump1"};
 973         $platform{"BIO_s_log"} .= ",!WIN32,!WIN16,!macintosh";
 974
 975         $platform{"PEM_read_NS_CERT_SEQ"} = "VMS";
 976         $platform{"PEM_write_NS_CERT_SEQ"} = "VMS";
 977         $platform{"PEM_read_P8_PRIV_KEY_INFO"} = "VMS";
 978         $platform{"PEM_write_P8_PRIV_KEY_INFO"} = "VMS";
 979         $platform{"EVP_sha384"} = "!VMSVAX";
 980         $platform{"EVP_sha512"} = "!VMSVAX";
 981         $platform{"SHA384_Init"} = "!VMSVAX";
 982         $platform{"SHA384_Transform"} = "!VMSVAX";
 983         $platform{"SHA384_Update"} = "!VMSVAX";
 984         $platform{"SHA384_Final"} = "!VMSVAX";
 985         $platform{"SHA384"} = "!VMSVAX";
 986         $platform{"SHA512_Init"} = "!VMSVAX";
 987         $platform{"SHA512_Transform"} = "!VMSVAX";
 988         $platform{"SHA512_Update"} = "!VMSVAX";
 989         $platform{"SHA512_Final"} = "!VMSVAX";
 990         $platform{"SHA512"} = "!VMSVAX";
 991         $platform{"WHIRLPOOL_Init"} = "!VMSVAX";
 992         $platform{"WHIRLPOOL"} = "!VMSVAX";
 993         $platform{"WHIRLPOOL_BitUpdate"} = "!VMSVAX";
 994         $platform{"EVP_whirlpool"} = "!VMSVAX";
 995         $platform{"WHIRLPOOL_Final"} = "!VMSVAX";
 996         $platform{"WHIRLPOOL_Update"} = "!VMSVAX";
 997
 998
 999         # Info we know about
1000
1001         push @ret, map { $_."\\".&info_string($_,"EXIST",
1002                                               $platform{$_},
1003                                               $kind{$_},
1004                                               $algorithm{$_}) } keys %syms;
1005
1006         if (keys %unknown_algorithms) {
1007                 print STDERR "WARNING: mkdef.pl doesn't know the following algorithms:\n";
1008                 print STDERR "\t",join("\n\t",keys %unknown_algorithms),"\n";
1009         }
1010         return(@ret);
1011 }
1012
1013 # Param: string of comma-separated platform-specs.
1014 sub reduce_platforms
1015 {
1016         my ($platforms) = @_;
1017         my $pl = defined($platforms) ? $platforms : "";
1018         my %p = map { $_ => 0 } split /,/, $pl;
1019         my $ret;
1020
1021         print STDERR "DEBUG: Entered reduce_platforms with \"$platforms\"\n"
1022             if $debug;
1023         # We do this, because if there's code like the following, it really
1024         # means the function exists in all cases and should therefore be
1025         # everywhere.  By increasing and decreasing, we may attain 0:
1026         #
1027         # ifndef WIN16
1028         #    int foo();
1029         # else
1030         #    int _fat foo();
1031         # endif
1032         foreach $platform (split /,/, $pl) {
1033                 if ($platform =~ /^!(.*)$/) {
1034                         $p{$1}--;
1035                 } else {
1036                         $p{$platform}++;
1037                 }
1038         }
1039         foreach $platform (keys %p) {
1040                 if ($p{$platform} == 0) { delete $p{$platform}; }
1041         }
1042
1043         delete $p{""};
1044
1045         $ret = join(',',sort(map { $p{$_} < 0 ? "!".$_ : $_ } keys %p));
1046         print STDERR "DEBUG: Exiting reduce_platforms with \"$ret\"\n"
1047             if $debug;
1048         return $ret;
1049 }
1050
1051 sub info_string {
1052         (my $symbol, my $exist, my $platforms, my $kind, my $algorithms) = @_;
1053
1054         my %a = defined($algorithms) ?
1055             map { $_ => 1 } split /,/, $algorithms : ();
1056         my $k = defined($kind) ? $kind : "FUNCTION";
1057         my $ret;
1058         my $p = &reduce_platforms($platforms);
1059
1060         delete $a{""};
1061
1062         $ret = $exist;
1063         $ret .= ":".$p;
1064         $ret .= ":".$k;
1065         $ret .= ":".join(',',sort keys %a);
1066         return $ret;
1067 }
1068
1069 sub maybe_add_info {
1070         (my $name, *nums, my @symbols) = @_;
1071         my $sym;
1072         my $new_info = 0;
1073         my %syms=();
1074
1075         print STDERR "Updating $name info\n";
1076         foreach $sym (@symbols) {
1077                 (my $s, my $i) = split /\\/, $sym;
1078                 if (defined($nums{$s})) {
1079                         $i =~ s/^(.*?:.*?:\w+)(\(\w+\))?/$1/;
1080                         (my $n, my $dummy) = split /\\/, $nums{$s};
1081                         if (!defined($dummy) || $i ne $dummy) {
1082                                 $nums{$s} = $n."\\".$i;
1083                                 $new_info++;
1084                                 print STDERR "DEBUG: maybe_add_info for $s: \"$dummy\" => \"$i\"\n" if $debug;
1085                         }
1086                 }
1087                 $syms{$s} = 1;
1088         }
1089
1090         my @s=sort { &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n") } keys %nums;
1091         foreach $sym (@s) {
1092                 (my $n, my $i) = split /\\/, $nums{$sym};
1093                 if (!defined($syms{$sym}) && $i !~ /^NOEXIST:/) {
1094                         $new_info++;
1095                         print STDERR "DEBUG: maybe_add_info for $sym: -> undefined\n" if $debug;
1096                 }
1097         }
1098         if ($new_info) {
1099                 print STDERR "$new_info old symbols got an info update\n";
1100                 if (!$do_rewrite) {
1101                         print STDERR "You should do a rewrite to fix this.\n";
1102                 }
1103         } else {
1104                 print STDERR "No old symbols needed info update\n";
1105         }
1106 }
1107
1108 # Param: string of comma-separated keywords, each possibly prefixed with a "!"
1109 sub is_valid
1110 {
1111         my ($keywords_txt,$platforms) = @_;
1112         my (@keywords) = split /,/,$keywords_txt;
1113         my ($falsesum, $truesum) = (0, 1);
1114
1115         # Param: one keyword
1116         sub recognise
1117         {
1118                 my ($keyword,$platforms) = @_;
1119
1120                 if ($platforms) {
1121                         # platforms
1122                         if ($keyword eq "VMSVAX" && $VMSVAX) { return 1; }
1123                         if ($keyword eq "VMSNonVAX" && $VMSNonVAX) { return 1; }
1124                         if ($keyword eq "VMS" && $VMS) { return 1; }
1125                         if ($keyword eq "WIN32" && $W32) { return 1; }
1126                         if ($keyword eq "WIN16" && $W16) { return 1; }
1127                         if ($keyword eq "WINNT" && $NT) { return 1; }
1128                         if ($keyword eq "OS2" && $OS2) { return 1; }
1129                         # Special platforms:
1130                         # EXPORT_VAR_AS_FUNCTION means that global variables
1131                         # will be represented as functions.  This currently
1132                         # only happens on VMS-VAX.
1133                         if ($keyword eq "EXPORT_VAR_AS_FUNCTION" && ($VMSVAX || $W32 || $W16)) {
1134                                 return 1;
1135                         }
1136                         if ($keyword eq "ZLIB" && $zlib) { return 1; }
1137                         return 0;
1138                 } else {
1139                         # algorithms
1140                         if ($keyword eq "RC2" && $no_rc2) { return 0; }
1141                         if ($keyword eq "RC4" && $no_rc4) { return 0; }
1142                         if ($keyword eq "RC5" && $no_rc5) { return 0; }
1143                         if ($keyword eq "IDEA" && $no_idea) { return 0; }
1144                         if ($keyword eq "DES" && $no_des) { return 0; }
1145                         if ($keyword eq "BF" && $no_bf) { return 0; }
1146                         if ($keyword eq "CAST" && $no_cast) { return 0; }
1147                         if ($keyword eq "MD2" && $no_md2) { return 0; }
1148                         if ($keyword eq "MD4" && $no_md4) { return 0; }
1149                         if ($keyword eq "MD5" && $no_md5) { return 0; }
1150                         if ($keyword eq "SHA" && $no_sha) { return 0; }
1151                         if ($keyword eq "RIPEMD" && $no_ripemd) { return 0; }
1152                         if ($keyword eq "MDC2" && $no_mdc2) { return 0; }
1153                         if ($keyword eq "WHIRLPOOL" && $no_whirlpool) { return 0; }
1154                         if ($keyword eq "RSA" && $no_rsa) { return 0; }
1155                         if ($keyword eq "DSA" && $no_dsa) { return 0; }
1156                         if ($keyword eq "DH" && $no_dh) { return 0; }
1157                         if ($keyword eq "EC" && $no_ec) { return 0; }
1158                         if ($keyword eq "ECDSA" && $no_ecdsa) { return 0; }
1159                         if ($keyword eq "ECDH" && $no_ecdh) { return 0; }
1160                         if ($keyword eq "HMAC" && $no_hmac) { return 0; }
1161                         if ($keyword eq "AES" && $no_aes) { return 0; }
1162                         if ($keyword eq "CAMELLIA" && $no_camellia) { return 0; }
1163                         if ($keyword eq "SEED" && $no_seed) { return 0; }
1164                         if ($keyword eq "EVP" && $no_evp) { return 0; }
1165                         if ($keyword eq "LHASH" && $no_lhash) { return 0; }
1166                         if ($keyword eq "STACK" && $no_stack) { return 0; }
1167                         if ($keyword eq "ERR" && $no_err) { return 0; }
1168                         if ($keyword eq "BUFFER" && $no_buffer) { return 0; }
1169                         if ($keyword eq "BIO" && $no_bio) { return 0; }
1170                         if ($keyword eq "COMP" && $no_comp) { return 0; }
1171                         if ($keyword eq "DSO" && $no_dso) { return 0; }
1172                         if ($keyword eq "KRB5" && $no_krb5) { return 0; }
1173                         if ($keyword eq "ENGINE" && $no_engine) { return 0; }
1174                         if ($keyword eq "HW" && $no_hw) { return 0; }
1175                         if ($keyword eq "FP_API" && $no_fp_api) { return 0; }
1176                         if ($keyword eq "STATIC_ENGINE" && $no_static_engine) { return 0; }
1177                         if ($keyword eq "GMP" && $no_gmp) { return 0; }
1178                         if ($keyword eq "RFC3779" && $no_rfc3779) { return 0; }
1179                         if ($keyword eq "TLSEXT" && $no_tlsext) { return 0; }
1180                         if ($keyword eq "PSK" && $no_psk) { return 0; }
1181                         if ($keyword eq "CMS" && $no_cms) { return 0; }
1182                         if ($keyword eq "NISTP224-64-GCC-128" && $no_nistp_gcc)
1183                                         { return 0; }
1184                         if ($keyword eq "SSL2" && $no_ssl2) { return 0; }
1185                         if ($keyword eq "CAPIENG" && $no_capieng) { return 0; }
1186                         if ($keyword eq "JPAKE" && $no_jpake) { return 0; }
1187                         if ($keyword eq "SRP" && $no_srp) { return 0; }
1188                         if ($keyword eq "DEPRECATED" && $no_deprecated) { return 0; }
1189
1190                         # Nothing recognise as true
1191                         return 1;
1192                 }
1193         }
1194
1195         foreach $k (@keywords) {
1196                 if ($k =~ /^!(.*)$/) {
1197                         $falsesum += &recognise($1,$platforms);
1198                 } else {
1199                         $truesum *= &recognise($k,$platforms);
1200                 }
1201         }
1202         print STDERR "DEBUG: [",$#keywords,",",$#keywords < 0,"] is_valid($keywords_txt) => (\!$falsesum) && $truesum = ",(!$falsesum) && $truesum,"\n" if $debug;
1203         return (!$falsesum) && $truesum;
1204 }
1205
1206 sub print_test_file
1207 {
1208         (*OUT,my $name,*nums,my $testall,my @symbols)=@_;
1209         my $n = 1; my @e; my @r;
1210         my $sym; my $prev = ""; my $prefSSLeay;
1211
1212         (@e)=grep(/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1213         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:.*/ && !/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1214         @symbols=((sort @e),(sort @r));
1215
1216         foreach $sym (@symbols) {
1217                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1218                 my $v = 0;
1219                 $v = 1 if $i=~ /^.*?:.*?:VARIABLE/;
1220                 my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1221                 my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1222                 if (!defined($nums{$s})) {
1223                         print STDERR "Warning: $s does not have a number assigned\n"
1224                             if(!$do_update);
1225                 } elsif (is_valid($p,1) && is_valid($a,0)) {
1226                         my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1227                         if ($prev eq $s2) {
1228                                 print OUT "\t/* The following has already appeared previously */\n";
1229                                 print STDERR "Warning: Symbol '",$s2,"' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1230                         }
1231                         $prev = $s2;    # To warn about duplicates...
1232
1233                         ($nn,$ni)=($nums{$s2} =~ /^(.*?)\\(.*)$/);
1234                         if ($v) {
1235                                 print OUT "\textern int $s2; /* type unknown */ /* $nn $ni */\n";
1236                         } else {
1237                                 print OUT "\textern int $s2(); /* type unknown */ /* $nn $ni */\n";
1238                         }
1239                 }
1240         }
1241 }
1242
1243 sub get_version {
1244    local *MF;
1245    my $v = '?';
1246    open MF, 'Makefile' or return $v;
1247    while (<MF>) {
1248      $v = $1, last if /^VERSION=(.*?)\s*$/;
1249    }
1250    close MF;
1251    return $v;
1252 }
1253
1254 sub print_def_file
1255 {
1256         (*OUT,my $name,*nums,my @symbols)=@_;
1257         my $n = 1; my @e; my @r; my @v; my $prev="";
1258         my $liboptions="";
1259         my $libname = $name;
1260         my $http_vendor = 'www.openssl.org/';
1261         my $version = get_version();
1262         my $what = "OpenSSL: implementation of Secure Socket Layer";
1263         my $description = "$what $version, $name - http://$http_vendor";
1264
1265         if ($W32)
1266                 { $libname.="32"; }
1267         elsif ($W16)
1268                 { $libname.="16"; }
1269         elsif ($OS2)
1270                 { # DLL names should not clash on the whole system.
1271                   # However, they should not have any particular relationship
1272                   # to the name of the static library.  Chose descriptive names
1273                   # (must be at most 8 chars).
1274                   my %translate = (ssl => 'open_ssl', crypto => 'cryptssl');
1275                   $libname = $translate{$name} || $name;
1276                   $liboptions = <<EOO;
1277 INITINSTANCE
1278 DATA MULTIPLE NONSHARED
1279 EOO
1280                   # Vendor field can't contain colon, drat; so we omit http://
1281                   $description = "\@#$http_vendor:$version#\@$what; DLL for library $name.  Build for EMX -Zmtd";
1282                 }
1283
1284         print OUT <<"EOF";
1285 ;
1286 ; Definition file for the DLL version of the $name library from OpenSSL
1287 ;
1288
1289 LIBRARY         $libname        $liboptions
1290
1291 EOF
1292
1293         if ($W16) {
1294                 print <<"EOF";
1295 CODE            PRELOAD MOVEABLE
1296 DATA            PRELOAD MOVEABLE SINGLE
1297
1298 EXETYPE         WINDOWS
1299
1300 HEAPSIZE        4096
1301 STACKSIZE       8192
1302
1303 EOF
1304         }
1305
1306         print "EXPORTS\n";
1307
1308         (@e)=grep(/^SSLeay(\{[0-9]+\})?\\.*?:.*?:FUNCTION/,@symbols);
1309         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:FUNCTION/ && !/^SSLeay(\{[0-9]+\})?\\.*?:.*?:FUNCTION/,@symbols);
1310         (@v)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:VARIABLE/,@symbols);
1311         @symbols=((sort @e),(sort @r), (sort @v));
1312
1313
1314         foreach $sym (@symbols) {
1315                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1316                 my $v = 0;
1317                 $v = 1 if $i =~ /^.*?:.*?:VARIABLE/;
1318                 if (!defined($nums{$s})) {
1319                         printf STDERR "Warning: $s does not have a number assigned\n"
1320                             if(!$do_update);
1321                 } else {
1322                         (my $n, my $dummy) = split /\\/, $nums{$s};
1323                         my %pf = ();
1324                         my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1325                         my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1326                         if (is_valid($p,1) && is_valid($a,0)) {
1327                                 my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1328                                 if ($prev eq $s2) {
1329                                         print STDERR "Warning: Symbol '",$s2,"' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1330                                 }
1331                                 $prev = $s2;    # To warn about duplicates...
1332                                 if($v && !$OS2) {
1333                                         printf OUT "    %s%-39s @%-8d DATA\n",($W32)?"":"_",$s2,$n;
1334                                 } else {
1335                                         printf OUT "    %s%-39s @%d\n",($W32||$OS2)?"":"_",$s2,$n;
1336                                 }
1337                         }
1338                 }
1339         }
1340         printf OUT "\n";
1341 }
1342
1343 sub load_numbers
1344 {
1345         my($name)=@_;
1346         my(@a,%ret);
1347
1348         $max_num = 0;
1349         $num_noinfo = 0;
1350         $prev = "";
1351         $prev_cnt = 0;
1352
1353         open(IN,"<$name") || die "unable to open $name:$!\n";
1354         while (<IN>) {
1355                 chop;
1356                 s/#.*$//;
1357                 next if /^\s*$/;
1358                 @a=split;
1359                 if (defined $ret{$a[0]}) {
1360                         # This is actually perfectly OK
1361                         #print STDERR "Warning: Symbol '",$a[0],"' redefined. old=",$ret{$a[0]},", new=",$a[1],"\n";
1362                 }
1363                 if ($max_num > $a[1]) {
1364                         print STDERR "Warning: Number decreased from ",$max_num," to ",$a[1],"\n";
1365                 }
1366                 elsif ($max_num == $a[1]) {
1367                         # This is actually perfectly OK
1368                         #print STDERR "Warning: Symbol ",$a[0]," has same number as previous ",$prev,": ",$a[1],"\n";
1369                         if ($a[0] eq $prev) {
1370                                 $prev_cnt++;
1371                                 $a[0] .= "{$prev_cnt}";
1372                         }
1373                 }
1374                 else {
1375                         $prev_cnt = 0;
1376                 }
1377                 if ($#a < 2) {
1378                         # Existence will be proven later, in do_defs
1379                         $ret{$a[0]}=$a[1];
1380                         $num_noinfo++;
1381                 } else {
1382                         $ret{$a[0]}=$a[1]."\\".$a[2]; # \\ is a special marker
1383                 }
1384                 $max_num = $a[1] if $a[1] > $max_num;
1385                 $prev=$a[0];
1386         }
1387         if ($num_noinfo) {
1388                 print STDERR "Warning: $num_noinfo symbols were without info.";
1389                 if ($do_rewrite) {
1390                         printf STDERR "  The rewrite will fix this.\n";
1391                 } else {
1392                         printf STDERR "  You should do a rewrite to fix this.\n";
1393                 }
1394         }
1395         close(IN);
1396         return(%ret);
1397 }
1398
1399 sub parse_number
1400 {
1401         (my $str, my $what) = @_;
1402         (my $n, my $i) = split(/\\/,$str);
1403         if ($what eq "n") {
1404                 return $n;
1405         } else {
1406                 return $i;
1407         }
1408 }
1409
1410 sub rewrite_numbers
1411 {
1412         (*OUT,$name,*nums,@symbols)=@_;
1413         my $thing;
1414
1415         print STDERR "Rewriting $name\n";
1416
1417         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1418         my $r; my %r; my %rsyms;
1419         foreach $r (@r) {
1420                 (my $s, my $i) = split /\\/, $r;
1421                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1422                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1423                 $r{$a} = $s."\\".$i;
1424                 $rsyms{$s} = 1;
1425         }
1426
1427         my %syms = ();
1428         foreach $_ (@symbols) {
1429                 (my $n, my $i) = split /\\/;
1430                 $syms{$n} = 1;
1431         }
1432
1433         my @s=sort {
1434             &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n")
1435             || $a cmp $b
1436         } keys %nums;
1437         foreach $sym (@s) {
1438                 (my $n, my $i) = split /\\/, $nums{$sym};
1439                 next if defined($i) && $i =~ /^.*?:.*?:\w+\(\w+\)/;
1440                 next if defined($rsyms{$sym});
1441                 print STDERR "DEBUG: rewrite_numbers for sym = ",$sym,": i = ",$i,", n = ",$n,", rsym{sym} = ",$rsyms{$sym},"syms{sym} = ",$syms{$sym},"\n" if $debug;
1442                 $i="NOEXIST::FUNCTION:"
1443                         if !defined($i) || $i eq "" || !defined($syms{$sym});
1444                 my $s2 = $sym;
1445                 $s2 =~ s/\{[0-9]+\}$//;
1446                 printf OUT "%s%-39s %d\t%s\n","",$s2,$n,$i;
1447                 if (exists $r{$sym}) {
1448                         (my $s, $i) = split /\\/,$r{$sym};
1449                         my $s2 = $s;
1450                         $s2 =~ s/\{[0-9]+\}$//;
1451                         printf OUT "%s%-39s %d\t%s\n","",$s2,$n,$i;
1452                 }
1453         }
1454 }
1455
1456 sub update_numbers
1457 {
1458         (*OUT,$name,*nums,my $start_num, my @symbols)=@_;
1459         my $new_syms = 0;
1460
1461         print STDERR "Updating $name numbers\n";
1462
1463         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1464         my $r; my %r; my %rsyms;
1465         foreach $r (@r) {
1466                 (my $s, my $i) = split /\\/, $r;
1467                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1468                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1469                 $r{$a} = $s."\\".$i;
1470                 $rsyms{$s} = 1;
1471         }
1472
1473         foreach $sym (@symbols) {
1474                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1475                 next if $i =~ /^.*?:.*?:\w+\(\w+\)/;
1476                 next if defined($rsyms{$sym});
1477                 die "ERROR: Symbol $sym had no info attached to it."
1478                     if $i eq "";
1479                 if (!exists $nums{$s}) {
1480                         $new_syms++;
1481                         my $s2 = $s;
1482                         $s2 =~ s/\{[0-9]+\}$//;
1483                         printf OUT "%s%-39s %d\t%s\n","",$s2, ++$start_num,$i;
1484                         if (exists $r{$s}) {
1485                                 ($s, $i) = split /\\/,$r{$s};
1486                                 $s =~ s/\{[0-9]+\}$//;
1487                                 printf OUT "%s%-39s %d\t%s\n","",$s, $start_num,$i;
1488                         }
1489                 }
1490         }
1491         if($new_syms) {
1492                 print STDERR "$new_syms New symbols added\n";
1493         } else {
1494                 print STDERR "No New symbols Added\n";
1495         }
1496 }
1497
1498 sub check_existing
1499 {
1500         (*nums, my @symbols)=@_;
1501         my %existing; my @remaining;
1502         @remaining=();
1503         foreach $sym (@symbols) {
1504                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1505                 $existing{$s}=1;
1506         }
1507         foreach $sym (keys %nums) {
1508                 if (!exists $existing{$sym}) {
1509                         push @remaining, $sym;
1510                 }
1511         }
1512         if(@remaining) {
1513                 print STDERR "The following symbols do not seem to exist:\n";
1514                 foreach $sym (@remaining) {
1515                         print STDERR "\t",$sym,"\n";
1516                 }
1517         }
1518 }
1519