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                          # 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                          # NEXTPROTONEG
 113                          "NEXTPROTONEG",
 114                          # Deprecated functions
 115                          "DEPRECATED",
 116                          # Hide SSL internals
 117                          "SSL_INTERN");
 118
 119 my $options="";
 120 open(IN,"<Makefile") || die "unable to open Makefile!\n";
 121 while(<IN>) {
 122     $options=$1 if (/^OPTIONS=(.*)$/);
 123 }
 124 close(IN);
 125
 126 # The following ciphers may be excluded (by Configure). This means functions
 127 # defined with ifndef(NO_XXX) are not included in the .def file, and everything
 128 # in directory xxx is ignored.
 129 my $no_rc2; my $no_rc4; my $no_rc5; my $no_idea; my $no_des; my $no_bf;
 130 my $no_cast; my $no_whirlpool; my $no_camellia; my $no_seed;
 131 my $no_md2; my $no_md4; my $no_md5; my $no_sha; my $no_ripemd; my $no_mdc2;
 132 my $no_rsa; my $no_dsa; my $no_dh; my $no_hmac=0; my $no_aes; my $no_krb5;
 133 my $no_ec; my $no_ecdsa; my $no_ecdh; my $no_engine; my $no_hw;
 134 my $no_fp_api; my $no_static_engine=1; my $no_gmp; my $no_deprecated;
 135 my $no_rfc3779; my $no_psk; my $no_tlsext; my $no_cms; my $no_capieng;
 136 my $no_jpake; my $no_ssl2; my $no_ec2m; my $no_nextprotoneg;
 137 my $no_srp;
 138
 139 my $fips;
 140
 141 my $zlib;
 142
 143
 144 foreach (@ARGV, split(/ /, $options))
 145         {
 146         $debug=1 if $_ eq "debug";
 147         $W32=1 if $_ eq "32";
 148         $W16=1 if $_ eq "16";
 149         if($_ eq "NT") {
 150                 $W32 = 1;
 151                 $NT = 1;
 152         }
 153         if ($_ eq "VMS-VAX") {
 154                 $VMS=1;
 155                 $VMSVAX=1;
 156         }
 157         if ($_ eq "VMS-NonVAX") {
 158                 $VMS=1;
 159                 $VMSNonVAX=1;
 160         }
 161         $VMS=1 if $_ eq "VMS";
 162         $OS2=1 if $_ eq "OS2";
 163         $fips=1 if /^fips/;
 164         if ($_ eq "zlib" || $_ eq "enable-zlib" || $_ eq "zlib-dynamic"
 165                          || $_ eq "enable-zlib-dynamic") {
 166                 $zlib = 1;
 167         }
 168
 169         $do_ssl=1 if $_ eq "ssleay";
 170         if ($_ eq "ssl") {
 171                 $do_ssl=1;
 172                 $libname=$_
 173         }
 174         $do_crypto=1 if $_ eq "libeay";
 175         if ($_ eq "crypto") {
 176                 $do_crypto=1;
 177                 $libname=$_;
 178         }
 179         $no_static_engine=1 if $_ eq "no-static-engine";
 180         $no_static_engine=0 if $_ eq "enable-static-engine";
 181         $do_update=1 if $_ eq "update";
 182         $do_rewrite=1 if $_ eq "rewrite";
 183         $do_ctest=1 if $_ eq "ctest";
 184         $do_ctestall=1 if $_ eq "ctestall";
 185         $do_checkexist=1 if $_ eq "exist";
 186         #$safe_stack_def=1 if $_ eq "-DDEBUG_SAFESTACK";
 187
 188         if    (/^no-rc2$/)      { $no_rc2=1; }
 189         elsif (/^no-rc4$/)      { $no_rc4=1; }
 190         elsif (/^no-rc5$/)      { $no_rc5=1; }
 191         elsif (/^no-idea$/)     { $no_idea=1; }
 192         elsif (/^no-des$/)      { $no_des=1; $no_mdc2=1; }
 193         elsif (/^no-bf$/)       { $no_bf=1; }
 194         elsif (/^no-cast$/)     { $no_cast=1; }
 195         elsif (/^no-whirlpool$/)     { $no_whirlpool=1; }
 196         elsif (/^no-md2$/)      { $no_md2=1; }
 197         elsif (/^no-md4$/)      { $no_md4=1; }
 198         elsif (/^no-md5$/)      { $no_md5=1; }
 199         elsif (/^no-sha$/)      { $no_sha=1; }
 200         elsif (/^no-ripemd$/)   { $no_ripemd=1; }
 201         elsif (/^no-mdc2$/)     { $no_mdc2=1; }
 202         elsif (/^no-rsa$/)      { $no_rsa=1; }
 203         elsif (/^no-dsa$/)      { $no_dsa=1; }
 204         elsif (/^no-dh$/)       { $no_dh=1; }
 205         elsif (/^no-ec$/)       { $no_ec=1; }
 206         elsif (/^no-ecdsa$/)    { $no_ecdsa=1; }
 207         elsif (/^no-ecdh$/)     { $no_ecdh=1; }
 208         elsif (/^no-hmac$/)     { $no_hmac=1; }
 209         elsif (/^no-aes$/)      { $no_aes=1; }
 210         elsif (/^no-camellia$/) { $no_camellia=1; }
 211         elsif (/^no-seed$/)     { $no_seed=1; }
 212         elsif (/^no-evp$/)      { $no_evp=1; }
 213         elsif (/^no-lhash$/)    { $no_lhash=1; }
 214         elsif (/^no-stack$/)    { $no_stack=1; }
 215         elsif (/^no-err$/)      { $no_err=1; }
 216         elsif (/^no-buffer$/)   { $no_buffer=1; }
 217         elsif (/^no-bio$/)      { $no_bio=1; }
 218         #elsif (/^no-locking$/) { $no_locking=1; }
 219         elsif (/^no-comp$/)     { $no_comp=1; }
 220         elsif (/^no-dso$/)      { $no_dso=1; }
 221         elsif (/^no-krb5$/)     { $no_krb5=1; }
 222         elsif (/^no-engine$/)   { $no_engine=1; }
 223         elsif (/^no-hw$/)       { $no_hw=1; }
 224         elsif (/^no-gmp$/)      { $no_gmp=1; }
 225         elsif (/^no-rfc3779$/)  { $no_rfc3779=1; }
 226         elsif (/^no-tlsext$/)   { $no_tlsext=1; }
 227         elsif (/^no-cms$/)      { $no_cms=1; }
 228         elsif (/^no-ec2m$/)     { $no_ec2m=1; }
 229         elsif (/^no-nextprotoneg$/)     { $no_nextprotoneg=1; }
 230         elsif (/^no-ssl2$/)     { $no_ssl2=1; }
 231         elsif (/^no-capieng$/)  { $no_capieng=1; }
 232         elsif (/^no-jpake$/)    { $no_jpake=1; }
 233         elsif (/^no-srp$/)      { $no_srp=1; }
 234         }
 235
 236
 237 if (!$libname) {
 238         if ($do_ssl) {
 239                 $libname="SSLEAY";
 240         }
 241         if ($do_crypto) {
 242                 $libname="LIBEAY";
 243         }
 244 }
 245
 246 # If no platform is given, assume WIN32
 247 if ($W32 + $W16 + $VMS + $OS2 == 0) {
 248         $W32 = 1;
 249 }
 250
 251 # Add extra knowledge
 252 if ($W16) {
 253         $no_fp_api=1;
 254 }
 255
 256 if (!$do_ssl && !$do_crypto)
 257         {
 258         print STDERR "usage: $0 ( ssl | crypto ) [ 16 | 32 | NT | OS2 ]\n";
 259         exit(1);
 260         }
 261
 262 %ssl_list=&load_numbers($ssl_num);
 263 $max_ssl = $max_num;
 264 %crypto_list=&load_numbers($crypto_num);
 265 $max_crypto = $max_num;
 266
 267 my $ssl="ssl/ssl.h";
 268 $ssl.=" ssl/kssl.h";
 269 $ssl.=" ssl/tls1.h";
 270
 271 my $crypto ="crypto/crypto.h";
 272 $crypto.=" crypto/o_dir.h";
 273 $crypto.=" crypto/o_str.h";
 274 $crypto.=" crypto/o_time.h";
 275 $crypto.=" crypto/des/des.h crypto/des/des_old.h" ; # unless $no_des;
 276 $crypto.=" crypto/idea/idea.h" ; # unless $no_idea;
 277 $crypto.=" crypto/rc4/rc4.h" ; # unless $no_rc4;
 278 $crypto.=" crypto/rc5/rc5.h" ; # unless $no_rc5;
 279 $crypto.=" crypto/rc2/rc2.h" ; # unless $no_rc2;
 280 $crypto.=" crypto/bf/blowfish.h" ; # unless $no_bf;
 281 $crypto.=" crypto/cast/cast.h" ; # unless $no_cast;
 282 $crypto.=" crypto/whrlpool/whrlpool.h" ;
 283 $crypto.=" crypto/md2/md2.h" ; # unless $no_md2;
 284 $crypto.=" crypto/md4/md4.h" ; # unless $no_md4;
 285 $crypto.=" crypto/md5/md5.h" ; # unless $no_md5;
 286 $crypto.=" crypto/mdc2/mdc2.h" ; # unless $no_mdc2;
 287 $crypto.=" crypto/sha/sha.h" ; # unless $no_sha;
 288 $crypto.=" crypto/ripemd/ripemd.h" ; # unless $no_ripemd;
 289 $crypto.=" crypto/aes/aes.h" ; # unless $no_aes;
 290 $crypto.=" crypto/camellia/camellia.h" ; # unless $no_camellia;
 291 $crypto.=" crypto/seed/seed.h"; # unless $no_seed;
 292
 293 $crypto.=" crypto/bn/bn.h";
 294 $crypto.=" crypto/rsa/rsa.h" ; # unless $no_rsa;
 295 $crypto.=" crypto/dsa/dsa.h" ; # unless $no_dsa;
 296 $crypto.=" crypto/dh/dh.h" ; # unless $no_dh;
 297 $crypto.=" crypto/ec/ec.h" ; # unless $no_ec;
 298 $crypto.=" crypto/ecdsa/ecdsa.h" ; # unless $no_ecdsa;
 299 $crypto.=" crypto/ecdh/ecdh.h" ; # unless $no_ecdh;
 300 $crypto.=" crypto/hmac/hmac.h" ; # unless $no_hmac;
 301
 302 $crypto.=" crypto/engine/engine.h"; # unless $no_engine;
 303 $crypto.=" crypto/stack/stack.h" ; # unless $no_stack;
 304 $crypto.=" crypto/buffer/buffer.h" ; # unless $no_buffer;
 305 $crypto.=" crypto/bio/bio.h" ; # unless $no_bio;
 306 $crypto.=" crypto/dso/dso.h" ; # unless $no_dso;
 307 $crypto.=" crypto/lhash/lhash.h" ; # unless $no_lhash;
 308 $crypto.=" crypto/conf/conf.h";
 309 $crypto.=" crypto/txt_db/txt_db.h";
 310
 311 $crypto.=" crypto/evp/evp.h" ; # unless $no_evp;
 312 $crypto.=" crypto/objects/objects.h";
 313 $crypto.=" crypto/pem/pem.h";
 314 #$crypto.=" crypto/meth/meth.h";
 315 $crypto.=" crypto/asn1/asn1.h";
 316 $crypto.=" crypto/asn1/asn1t.h";
 317 $crypto.=" crypto/asn1/asn1_mac.h";
 318 $crypto.=" crypto/err/err.h" ; # unless $no_err;
 319 $crypto.=" crypto/pkcs7/pkcs7.h";
 320 $crypto.=" crypto/pkcs12/pkcs12.h";
 321 $crypto.=" crypto/x509/x509.h";
 322 $crypto.=" crypto/x509/x509_vfy.h";
 323 $crypto.=" crypto/x509v3/x509v3.h";
 324 $crypto.=" crypto/ts/ts.h";
 325 $crypto.=" crypto/rand/rand.h";
 326 $crypto.=" crypto/comp/comp.h" ; # unless $no_comp;
 327 $crypto.=" crypto/ocsp/ocsp.h";
 328 $crypto.=" crypto/ui/ui.h crypto/ui/ui_compat.h";
 329 $crypto.=" crypto/krb5/krb5_asn.h";
 330 #$crypto.=" crypto/store/store.h";
 331 $crypto.=" crypto/pqueue/pqueue.h";
 332 $crypto.=" crypto/cms/cms.h";
 333 $crypto.=" crypto/jpake/jpake.h";
 334 $crypto.=" crypto/srp/srp.h";
 335 $crypto.=" crypto/modes/modes.h";
 336 $crypto.=" fips/fips.h fips/rand/fips_rand.h";
 337
 338 my $symhacks="crypto/symhacks.h";
 339
 340 my @ssl_symbols = &do_defs("SSLEAY", $ssl, $symhacks);
 341 my @crypto_symbols = &do_defs("LIBEAY", $crypto, $symhacks);
 342
 343 if ($do_update) {
 344
 345 if ($do_ssl == 1) {
 346
 347         &maybe_add_info("SSLEAY",*ssl_list,@ssl_symbols);
 348         if ($do_rewrite == 1) {
 349                 open(OUT, ">$ssl_num");
 350                 &rewrite_numbers(*OUT,"SSLEAY",*ssl_list,@ssl_symbols);
 351         } else {
 352                 open(OUT, ">>$ssl_num");
 353         }
 354         &update_numbers(*OUT,"SSLEAY",*ssl_list,$max_ssl,@ssl_symbols);
 355         close OUT;
 356 }
 357
 358 if($do_crypto == 1) {
 359
 360         &maybe_add_info("LIBEAY",*crypto_list,@crypto_symbols);
 361         if ($do_rewrite == 1) {
 362                 open(OUT, ">$crypto_num");
 363                 &rewrite_numbers(*OUT,"LIBEAY",*crypto_list,@crypto_symbols);
 364         } else {
 365                 open(OUT, ">>$crypto_num");
 366         }
 367         &update_numbers(*OUT,"LIBEAY",*crypto_list,$max_crypto,@crypto_symbols);
 368         close OUT;
 369 }
 370
 371 } elsif ($do_checkexist) {
 372         &check_existing(*ssl_list, @ssl_symbols)
 373                 if $do_ssl == 1;
 374         &check_existing(*crypto_list, @crypto_symbols)
 375                 if $do_crypto == 1;
 376 } elsif ($do_ctest || $do_ctestall) {
 377
 378         print <<"EOF";
 379
 380 /* Test file to check all DEF file symbols are present by trying
 381  * to link to all of them. This is *not* intended to be run!
 382  */
 383
 384 int main()
 385 {
 386 EOF
 387         &print_test_file(*STDOUT,"SSLEAY",*ssl_list,$do_ctestall,@ssl_symbols)
 388                 if $do_ssl == 1;
 389
 390         &print_test_file(*STDOUT,"LIBEAY",*crypto_list,$do_ctestall,@crypto_symbols)
 391                 if $do_crypto == 1;
 392
 393         print "}\n";
 394
 395 } else {
 396
 397         &print_def_file(*STDOUT,$libname,*ssl_list,@ssl_symbols)
 398                 if $do_ssl == 1;
 399
 400         &print_def_file(*STDOUT,$libname,*crypto_list,@crypto_symbols)
 401                 if $do_crypto == 1;
 402
 403 }
 404
 405
 406 sub do_defs
 407 {
 408         my($name,$files,$symhacksfile)=@_;
 409         my $file;
 410         my @ret;
 411         my %syms;
 412         my %platform;           # For anything undefined, we assume ""
 413         my %kind;               # For anything undefined, we assume "FUNCTION"
 414         my %algorithm;          # For anything undefined, we assume ""
 415         my %variant;
 416         my %variant_cnt;        # To be able to allocate "name{n}" if "name"
 417                                 # is the same name as the original.
 418         my $cpp;
 419         my %unknown_algorithms = ();
 420
 421         foreach $file (split(/\s+/,$symhacksfile." ".$files))
 422                 {
 423                 print STDERR "DEBUG: starting on $file:\n" if $debug;
 424                 open(IN,"<$file") || die "unable to open $file:$!\n";
 425                 my $line = "", my $def= "";
 426                 my %tag = (
 427                         (map { $_ => 0 } @known_platforms),
 428                         (map { "OPENSSL_SYS_".$_ => 0 } @known_ossl_platforms),
 429                         (map { "OPENSSL_NO_".$_ => 0 } @known_algorithms),
 430                         NOPROTO         => 0,
 431                         PERL5           => 0,
 432                         _WINDLL         => 0,
 433                         CONST_STRICT    => 0,
 434                         TRUE            => 1,
 435                 );
 436                 my $symhacking = $file eq $symhacksfile;
 437                 my @current_platforms = ();
 438                 my @current_algorithms = ();
 439
 440                 # params: symbol, alias, platforms, kind
 441                 # The reason to put this subroutine in a variable is that
 442                 # it will otherwise create it's own, unshared, version of
 443                 # %tag and %variant...
 444                 my $make_variant = sub
 445                 {
 446                         my ($s, $a, $p, $k) = @_;
 447                         my ($a1, $a2);
 448
 449                         print STDERR "DEBUG: make_variant: Entered with ",$s,", ",$a,", ",(defined($p)?$p:""),", ",(defined($k)?$k:""),"\n" if $debug;
 450                         if (defined($p))
 451                         {
 452                                 $a1 = join(",",$p,
 453                                            grep(!/^$/,
 454                                                 map { $tag{$_} == 1 ? $_ : "" }
 455                                                 @known_platforms));
 456                         }
 457                         else
 458                         {
 459                                 $a1 = join(",",
 460                                            grep(!/^$/,
 461                                                 map { $tag{$_} == 1 ? $_ : "" }
 462                                                 @known_platforms));
 463                         }
 464                         $a2 = join(",",
 465                                    grep(!/^$/,
 466                                         map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ : "" }
 467                                         @known_ossl_platforms));
 468                         print STDERR "DEBUG: make_variant: a1 = $a1; a2 = $a2\n" if $debug;
 469                         if ($a1 eq "") { $a1 = $a2; }
 470                         elsif ($a1 ne "" && $a2 ne "") { $a1 .= ",".$a2; }
 471                         if ($a eq $s)
 472                         {
 473                                 if (!defined($variant_cnt{$s}))
 474                                 {
 475                                         $variant_cnt{$s} = 0;
 476                                 }
 477                                 $variant_cnt{$s}++;
 478                                 $a .= "{$variant_cnt{$s}}";
 479                         }
 480                         my $toadd = $a.":".$a1.(defined($k)?":".$k:"");
 481                         my $togrep = $s.'(\{[0-9]+\})?:'.$a1.(defined($k)?":".$k:"");
 482                         if (!grep(/^$togrep$/,
 483                                   split(/;/, defined($variant{$s})?$variant{$s}:""))) {
 484                                 if (defined($variant{$s})) { $variant{$s} .= ";"; }
 485                                 $variant{$s} .= $toadd;
 486                         }
 487                         print STDERR "DEBUG: make_variant: Exit with variant of ",$s," = ",$variant{$s},"\n" if $debug;
 488                 };
 489
 490                 print STDERR "DEBUG: parsing ----------\n" if $debug;
 491                 while(<IN>) {
 492                         if (/\/\* Error codes for the \w+ functions\. \*\//)
 493                                 {
 494                                 undef @tag;
 495                                 last;
 496                                 }
 497                         if ($line ne '') {
 498                                 $_ = $line . $_;
 499                                 $line = '';
 500                         }
 501
 502                         if (/\\$/) {
 503                                 chomp; # remove eol
 504                                 chop; # remove ending backslash
 505                                 $line = $_;
 506                                 next;
 507                         }
 508
 509                         if(/\/\*/) {
 510                                 if (not /\*\//) {       # multiline comment...
 511                                         $line = $_;     # ... just accumulate
 512                                         next;
 513                                 } else {
 514                                         s/\/\*.*?\*\///gs;# wipe it
 515                                 }
 516                         }
 517
 518                         if ($cpp) {
 519                                 $cpp++ if /^#\s*if/;
 520                                 $cpp-- if /^#\s*endif/;
 521                                 next;
 522                         }
 523                         $cpp = 1 if /^#.*ifdef.*cplusplus/;
 524
 525                         s/{[^{}]*}//gs;                      # ignore {} blocks
 526                         print STDERR "DEBUG: \$def=\"$def\"\n" if $debug && $def ne "";
 527                         print STDERR "DEBUG: \$_=\"$_\"\n" if $debug;
 528                         if (/^\#\s*ifndef\s+(.*)/) {
 529                                 push(@tag,"-");
 530                                 push(@tag,$1);
 531                                 $tag{$1}=-1;
 532                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
 533                         } elsif (/^\#\s*if\s+!defined\(([^\)]+)\)/) {
 534                                 push(@tag,"-");
 535                                 if (/^\#\s*if\s+(!defined\(([^\)]+)\)(\s+\&\&\s+!defined\(([^\)]+)\))*)$/) {
 536                                         my $tmp_1 = $1;
 537                                         my $tmp_;
 538                                         foreach $tmp_ (split '\&\&',$tmp_1) {
 539                                                 $tmp_ =~ /!defined\(([^\)]+)\)/;
 540                                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
 541                                                 push(@tag,$1);
 542                                                 $tag{$1}=-1;
 543                                         }
 544                                 } else {
 545                                         print STDERR "Warning: $file: complicated expression: $_" if $debug; # because it is O...
 546                                         print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
 547                                         push(@tag,$1);
 548                                         $tag{$1}=-1;
 549                                 }
 550                         } elsif (/^\#\s*ifdef\s+(\S*)/) {
 551                                 push(@tag,"-");
 552                                 push(@tag,$1);
 553                                 $tag{$1}=1;
 554                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
 555                         } elsif (/^\#\s*if\s+defined\(([^\)]+)\)/) {
 556                                 push(@tag,"-");
 557                                 if (/^\#\s*if\s+(defined\(([^\)]+)\)(\s+\|\|\s+defined\(([^\)]+)\))*)$/) {
 558                                         my $tmp_1 = $1;
 559                                         my $tmp_;
 560                                         foreach $tmp_ (split '\|\|',$tmp_1) {
 561                                                 $tmp_ =~ /defined\(([^\)]+)\)/;
 562                                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
 563                                                 push(@tag,$1);
 564                                                 $tag{$1}=1;
 565                                         }
 566                                 } else {
 567                                         print STDERR "Warning: $file: complicated expression: $_\n" if $debug; # because it is O...
 568                                         print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
 569                                         push(@tag,$1);
 570                                         $tag{$1}=1;
 571                                 }
 572                         } elsif (/^\#\s*error\s+(\w+) is disabled\./) {
 573                                 my $tag_i = $#tag;
 574                                 while($tag[$tag_i] ne "-") {
 575                                         if ($tag[$tag_i] eq "OPENSSL_NO_".$1) {
 576                                                 $tag{$tag[$tag_i]}=2;
 577                                                 print STDERR "DEBUG: $file: chaged tag $1 = 2\n" if $debug;
 578                                         }
 579                                         $tag_i--;
 580                                 }
 581                         } elsif (/^\#\s*endif/) {
 582                                 my $tag_i = $#tag;
 583                                 while($tag_i > 0 && $tag[$tag_i] ne "-") {
 584                                         my $t=$tag[$tag_i];
 585                                         print STDERR "DEBUG: \$t=\"$t\"\n" if $debug;
 586                                         if ($tag{$t}==2) {
 587                                                 $tag{$t}=-1;
 588                                         } else {
 589                                                 $tag{$t}=0;
 590                                         }
 591                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
 592                                         pop(@tag);
 593                                         if ($t =~ /^OPENSSL_NO_([A-Z0-9_]+)$/) {
 594                                                 $t=$1;
 595                                         } else {
 596                                                 $t="";
 597                                         }
 598                                         if ($t ne ""
 599                                             && !grep(/^$t$/, @known_algorithms)) {
 600                                                 $unknown_algorithms{$t} = 1;
 601                                                 #print STDERR "DEBUG: Added as unknown algorithm: $t\n" if $debug;
 602                                         }
 603                                         $tag_i--;
 604                                 }
 605                                 pop(@tag);
 606                         } elsif (/^\#\s*else/) {
 607                                 my $tag_i = $#tag;
 608                                 while($tag[$tag_i] ne "-") {
 609                                         my $t=$tag[$tag_i];
 610                                         $tag{$t}= -$tag{$t};
 611                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
 612                                         $tag_i--;
 613                                 }
 614                         } elsif (/^\#\s*if\s+1/) {
 615                                 push(@tag,"-");
 616                                 # Dummy tag
 617                                 push(@tag,"TRUE");
 618                                 $tag{"TRUE"}=1;
 619                                 print STDERR "DEBUG: $file: found 1\n" if $debug;
 620                         } elsif (/^\#\s*if\s+0/) {
 621                                 push(@tag,"-");
 622                                 # Dummy tag
 623                                 push(@tag,"TRUE");
 624                                 $tag{"TRUE"}=-1;
 625                                 print STDERR "DEBUG: $file: found 0\n" if $debug;
 626                         } elsif (/^\#\s*define\s+(\w+)\s+(\w+)/
 627                                  && $symhacking && $tag{'TRUE'} != -1) {
 628                                 # This is for aliasing.  When we find an alias,
 629                                 # we have to invert
 630                                 &$make_variant($1,$2);
 631                                 print STDERR "DEBUG: $file: defined $1 = $2\n" if $debug;
 632                         }
 633                         if (/^\#/) {
 634                                 @current_platforms =
 635                                     grep(!/^$/,
 636                                          map { $tag{$_} == 1 ? $_ :
 637                                                    $tag{$_} == -1 ? "!".$_  : "" }
 638                                          @known_platforms);
 639                                 push @current_platforms
 640                                     , grep(!/^$/,
 641                                            map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ :
 642                                                      $tag{"OPENSSL_SYS_".$_} == -1 ? "!".$_  : "" }
 643                                            @known_ossl_platforms);
 644                                 @current_algorithms =
 645                                     grep(!/^$/,
 646                                          map { $tag{"OPENSSL_NO_".$_} == -1 ? $_ : "" }
 647                                          @known_algorithms);
 648                                 $def .=
 649                                     "#INFO:"
 650                                         .join(',',@current_platforms).":"
 651                                             .join(',',@current_algorithms).";";
 652                                 next;
 653                         }
 654                         if ($tag{'TRUE'} != -1) {
 655                                 if (/^\s*DECLARE_STACK_OF\s*\(\s*(\w*)\s*\)/) {
 656                                         next;
 657                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 658                                         $def .= "int d2i_$3(void);";
 659                                         $def .= "int i2d_$3(void);";
 660                                         # Variant for platforms that do not
 661                                         # have to access globale variables
 662                                         # in shared libraries through functions
 663                                         $def .=
 664                                             "#INFO:"
 665                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 666                                                     .join(',',@current_algorithms).";";
 667                                         $def .= "OPENSSL_EXTERN int $2_it;";
 668                                         $def .=
 669                                             "#INFO:"
 670                                                 .join(',',@current_platforms).":"
 671                                                     .join(',',@current_algorithms).";";
 672                                         # Variant for platforms that have to
 673                                         # access globale variables in shared
 674                                         # libraries through functions
 675                                         &$make_variant("$2_it","$2_it",
 676                                                       "EXPORT_VAR_AS_FUNCTION",
 677                                                       "FUNCTION");
 678                                         next;
 679                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_fname\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 680                                         $def .= "int d2i_$3(void);";
 681                                         $def .= "int i2d_$3(void);";
 682                                         $def .= "int $3_free(void);";
 683                                         $def .= "int $3_new(void);";
 684                                         # Variant for platforms that do not
 685                                         # have to access globale variables
 686                                         # in shared libraries through functions
 687                                         $def .=
 688                                             "#INFO:"
 689                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 690                                                     .join(',',@current_algorithms).";";
 691                                         $def .= "OPENSSL_EXTERN int $2_it;";
 692                                         $def .=
 693                                             "#INFO:"
 694                                                 .join(',',@current_platforms).":"
 695                                                     .join(',',@current_algorithms).";";
 696                                         # Variant for platforms that have to
 697                                         # access globale variables in shared
 698                                         # libraries through functions
 699                                         &$make_variant("$2_it","$2_it",
 700                                                       "EXPORT_VAR_AS_FUNCTION",
 701                                                       "FUNCTION");
 702                                         next;
 703                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS\s*\(\s*(\w*)\s*\)/ ||
 704                                          /^\s*DECLARE_ASN1_FUNCTIONS_const\s*\(\s*(\w*)\s*\)/) {
 705                                         $def .= "int d2i_$1(void);";
 706                                         $def .= "int i2d_$1(void);";
 707                                         $def .= "int $1_free(void);";
 708                                         $def .= "int $1_new(void);";
 709                                         # Variant for platforms that do not
 710                                         # have to access globale variables
 711                                         # in shared libraries through functions
 712                                         $def .=
 713                                             "#INFO:"
 714                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 715                                                     .join(',',@current_algorithms).";";
 716                                         $def .= "OPENSSL_EXTERN int $1_it;";
 717                                         $def .=
 718                                             "#INFO:"
 719                                                 .join(',',@current_platforms).":"
 720                                                     .join(',',@current_algorithms).";";
 721                                         # Variant for platforms that have to
 722                                         # access globale variables in shared
 723                                         # libraries through functions
 724                                         &$make_variant("$1_it","$1_it",
 725                                                       "EXPORT_VAR_AS_FUNCTION",
 726                                                       "FUNCTION");
 727                                         next;
 728                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS_const\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 729                                         $def .= "int d2i_$2(void);";
 730                                         $def .= "int i2d_$2(void);";
 731                                         # Variant for platforms that do not
 732                                         # have to access globale variables
 733                                         # in shared libraries through functions
 734                                         $def .=
 735                                             "#INFO:"
 736                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 737                                                     .join(',',@current_algorithms).";";
 738                                         $def .= "OPENSSL_EXTERN int $2_it;";
 739                                         $def .=
 740                                             "#INFO:"
 741                                                 .join(',',@current_platforms).":"
 742                                                     .join(',',@current_algorithms).";";
 743                                         # Variant for platforms that have to
 744                                         # access globale variables in shared
 745                                         # libraries through functions
 746                                         &$make_variant("$2_it","$2_it",
 747                                                       "EXPORT_VAR_AS_FUNCTION",
 748                                                       "FUNCTION");
 749                                         next;
 750                                 } elsif (/^\s*DECLARE_ASN1_ALLOC_FUNCTIONS\s*\(\s*(\w*)\s*\)/) {
 751                                         $def .= "int $1_free(void);";
 752                                         $def .= "int $1_new(void);";
 753                                         next;
 754                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 755                                         $def .= "int d2i_$2(void);";
 756                                         $def .= "int i2d_$2(void);";
 757                                         $def .= "int $2_free(void);";
 758                                         $def .= "int $2_new(void);";
 759                                         # Variant for platforms that do not
 760                                         # have to access globale variables
 761                                         # in shared libraries through functions
 762                                         $def .=
 763                                             "#INFO:"
 764                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 765                                                     .join(',',@current_algorithms).";";
 766                                         $def .= "OPENSSL_EXTERN int $2_it;";
 767                                         $def .=
 768                                             "#INFO:"
 769                                                 .join(',',@current_platforms).":"
 770                                                     .join(',',@current_algorithms).";";
 771                                         # Variant for platforms that have to
 772                                         # access globale variables in shared
 773                                         # libraries through functions
 774                                         &$make_variant("$2_it","$2_it",
 775                                                       "EXPORT_VAR_AS_FUNCTION",
 776                                                       "FUNCTION");
 777                                         next;
 778                                 } elsif (/^\s*DECLARE_ASN1_ITEM\s*\(\s*(\w*)\s*\)/) {
 779                                         # Variant for platforms that do not
 780                                         # have to access globale variables
 781                                         # in shared libraries through functions
 782                                         $def .=
 783                                             "#INFO:"
 784                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 785                                                     .join(',',@current_algorithms).";";
 786                                         $def .= "OPENSSL_EXTERN int $1_it;";
 787                                         $def .=
 788                                             "#INFO:"
 789                                                 .join(',',@current_platforms).":"
 790                                                     .join(',',@current_algorithms).";";
 791                                         # Variant for platforms that have to
 792                                         # access globale variables in shared
 793                                         # libraries through functions
 794                                         &$make_variant("$1_it","$1_it",
 795                                                       "EXPORT_VAR_AS_FUNCTION",
 796                                                       "FUNCTION");
 797                                         next;
 798                                 } elsif (/^\s*DECLARE_ASN1_NDEF_FUNCTION\s*\(\s*(\w*)\s*\)/) {
 799                                         $def .= "int i2d_$1_NDEF(void);";
 800                                 } elsif (/^\s*DECLARE_ASN1_SET_OF\s*\(\s*(\w*)\s*\)/) {
 801                                         next;
 802                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION\s*\(\s*(\w*)\s*\)/) {
 803                                         $def .= "int $1_print_ctx(void);";
 804                                         next;
 805                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 806                                         $def .= "int $2_print_ctx(void);";
 807                                         next;
 808                                 } elsif (/^\s*DECLARE_PKCS12_STACK_OF\s*\(\s*(\w*)\s*\)/) {
 809                                         next;
 810                                 } elsif (/^DECLARE_PEM_rw\s*\(\s*(\w*)\s*,/ ||
 811                                          /^DECLARE_PEM_rw_cb\s*\(\s*(\w*)\s*,/ ||
 812                                          /^DECLARE_PEM_rw_const\s*\(\s*(\w*)\s*,/ ) {
 813                                         # Things not in Win16
 814                                         $def .=
 815                                             "#INFO:"
 816                                                 .join(',',"!WIN16",@current_platforms).":"
 817                                                     .join(',',@current_algorithms).";";
 818                                         $def .= "int PEM_read_$1(void);";
 819                                         $def .= "int PEM_write_$1(void);";
 820                                         $def .=
 821                                             "#INFO:"
 822                                                 .join(',',@current_platforms).":"
 823                                                     .join(',',@current_algorithms).";";
 824                                         # Things that are everywhere
 825                                         $def .= "int PEM_read_bio_$1(void);";
 826                                         $def .= "int PEM_write_bio_$1(void);";
 827                                         next;
 828                                 } elsif (/^DECLARE_PEM_write\s*\(\s*(\w*)\s*,/ ||
 829                                          /^DECLARE_PEM_write_cb\s*\(\s*(\w*)\s*,/ ) {
 830                                         # Things not in Win16
 831                                         $def .=
 832                                             "#INFO:"
 833                                                 .join(',',"!WIN16",@current_platforms).":"
 834                                                     .join(',',@current_algorithms).";";
 835                                         $def .= "int PEM_write_$1(void);";
 836                                         $def .=
 837                                             "#INFO:"
 838                                                 .join(',',@current_platforms).":"
 839                                                     .join(',',@current_algorithms).";";
 840                                         # Things that are everywhere
 841                                         $def .= "int PEM_write_bio_$1(void);";
 842                                         next;
 843                                 } elsif (/^DECLARE_PEM_read\s*\(\s*(\w*)\s*,/ ||
 844                                          /^DECLARE_PEM_read_cb\s*\(\s*(\w*)\s*,/ ) {
 845                                         # Things not in Win16
 846                                         $def .=
 847                                             "#INFO:"
 848                                                 .join(',',"!WIN16",@current_platforms).":"
 849                                                     .join(',',@current_algorithms).";";
 850                                         $def .= "int PEM_read_$1(void);";
 851                                         $def .=
 852                                             "#INFO:"
 853                                                 .join(',',@current_platforms).":"
 854                                                     .join(',',@current_algorithms).";";
 855                                         # Things that are everywhere
 856                                         $def .= "int PEM_read_bio_$1(void);";
 857                                         next;
 858                                 } elsif (/^OPENSSL_DECLARE_GLOBAL\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 859                                         # Variant for platforms that do not
 860                                         # have to access globale variables
 861                                         # in shared libraries through functions
 862                                         $def .=
 863                                             "#INFO:"
 864                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 865                                                     .join(',',@current_algorithms).";";
 866                                         $def .= "OPENSSL_EXTERN int _shadow_$2;";
 867                                         $def .=
 868                                             "#INFO:"
 869                                                 .join(',',@current_platforms).":"
 870                                                     .join(',',@current_algorithms).";";
 871                                         # Variant for platforms that have to
 872                                         # access globale variables in shared
 873                                         # libraries through functions
 874                                         &$make_variant("_shadow_$2","_shadow_$2",
 875                                                       "EXPORT_VAR_AS_FUNCTION",
 876                                                       "FUNCTION");
 877                                 } elsif ($tag{'CONST_STRICT'} != 1) {
 878                                         if (/\{|\/\*|\([^\)]*$/) {
 879                                                 $line = $_;
 880                                         } else {
 881                                                 $def .= $_;
 882                                         }
 883                                 }
 884                         }
 885                 }
 886                 close(IN);
 887
 888                 my $algs;
 889                 my $plays;
 890
 891                 print STDERR "DEBUG: postprocessing ----------\n" if $debug;
 892                 foreach (split /;/, $def) {
 893                         my $s; my $k = "FUNCTION"; my $p; my $a;
 894                         s/^[\n\s]*//g;
 895                         s/[\n\s]*$//g;
 896                         next if(/\#undef/);
 897                         next if(/typedef\W/);
 898                         next if(/\#define/);
 899
 900                         # Reduce argument lists to empty ()
 901                         # fold round brackets recursively: (t(*v)(t),t) -> (t{}{},t) -> {}
 902                         while(/\(.*\)/s) {
 903                                 s/\([^\(\)]+\)/\{\}/gs;
 904                                 s/\(\s*\*\s*(\w+)\s*\{\}\s*\)/$1/gs;    #(*f{}) -> f
 905                         }
 906                         # pretend as we didn't use curly braces: {} -> ()
 907                         s/\{\}/\(\)/gs;
 908
 909                         s/STACK_OF\(\)/void/gs;
 910                         s/LHASH_OF\(\)/void/gs;
 911
 912                         print STDERR "DEBUG: \$_ = \"$_\"\n" if $debug;
 913                         if (/^\#INFO:([^:]*):(.*)$/) {
 914                                 $plats = $1;
 915                                 $algs = $2;
 916                                 print STDERR "DEBUG: found info on platforms ($plats) and algorithms ($algs)\n" if $debug;
 917                                 next;
 918                         } elsif (/^\s*OPENSSL_EXTERN\s.*?(\w+(\{[0-9]+\})?)(\[[0-9]*\])*\s*$/) {
 919                                 $s = $1;
 920                                 $k = "VARIABLE";
 921                                 print STDERR "DEBUG: found external variable $s\n" if $debug;
 922                         } elsif (/TYPEDEF_\w+_OF/s) {
 923                                 next;
 924                         } elsif (/(\w+)\s*\(\).*/s) {   # first token prior [first] () is
 925                                 $s = $1;                # a function name!
 926                                 print STDERR "DEBUG: found function $s\n" if $debug;
 927                         } elsif (/\(/ and not (/=/)) {
 928                                 print STDERR "File $file: cannot parse: $_;\n";
 929                                 next;
 930                         } else {
 931                                 next;
 932                         }
 933
 934                         $syms{$s} = 1;
 935                         $kind{$s} = $k;
 936
 937                         $p = $plats;
 938                         $a = $algs;
 939                         $a .= ",BF" if($s =~ /EVP_bf/);
 940                         $a .= ",CAST" if($s =~ /EVP_cast/);
 941                         $a .= ",DES" if($s =~ /EVP_des/);
 942                         $a .= ",DSA" if($s =~ /EVP_dss/);
 943                         $a .= ",IDEA" if($s =~ /EVP_idea/);
 944                         $a .= ",MD2" if($s =~ /EVP_md2/);
 945                         $a .= ",MD4" if($s =~ /EVP_md4/);
 946                         $a .= ",MD5" if($s =~ /EVP_md5/);
 947                         $a .= ",RC2" if($s =~ /EVP_rc2/);
 948                         $a .= ",RC4" if($s =~ /EVP_rc4/);
 949                         $a .= ",RC5" if($s =~ /EVP_rc5/);
 950                         $a .= ",RIPEMD" if($s =~ /EVP_ripemd/);
 951                         $a .= ",SHA" if($s =~ /EVP_sha/);
 952                         $a .= ",RSA" if($s =~ /EVP_(Open|Seal)(Final|Init)/);
 953                         $a .= ",RSA" if($s =~ /PEM_Seal(Final|Init|Update)/);
 954                         $a .= ",RSA" if($s =~ /RSAPrivateKey/);
 955                         $a .= ",RSA" if($s =~ /SSLv23?_((client|server)_)?method/);
 956
 957                         $platform{$s} =
 958                             &reduce_platforms((defined($platform{$s})?$platform{$s}.',':"").$p);
 959                         $algorithm{$s} .= ','.$a;
 960
 961                         if (defined($variant{$s})) {
 962                                 foreach $v (split /;/,$variant{$s}) {
 963                                         (my $r, my $p, my $k) = split(/:/,$v);
 964                                         my $ip = join ',',map({ /^!(.*)$/ ? $1 : "!".$_ } split /,/, $p);
 965                                         $syms{$r} = 1;
 966                                         if (!defined($k)) { $k = $kind{$s}; }
 967                                         $kind{$r} = $k."(".$s.")";
 968                                         $algorithm{$r} = $algorithm{$s};
 969                                         $platform{$r} = &reduce_platforms($platform{$s}.",".$p.",".$p);
 970                                         $platform{$s} = &reduce_platforms($platform{$s}.','.$ip.','.$ip);
 971                                         print STDERR "DEBUG: \$variant{\"$s\"} = ",$v,"; \$r = $r; \$p = ",$platform{$r},"; \$a = ",$algorithm{$r},"; \$kind = ",$kind{$r},"\n" if $debug;
 972                                 }
 973                         }
 974                         print STDERR "DEBUG: \$s = $s; \$p = ",$platform{$s},"; \$a = ",$algorithm{$s},"; \$kind = ",$kind{$s},"\n" if $debug;
 975                 }
 976         }
 977
 978         # Prune the returned symbols
 979
 980         delete $syms{"bn_dump1"};
 981         $platform{"BIO_s_log"} .= ",!WIN32,!WIN16,!macintosh";
 982
 983         $platform{"PEM_read_NS_CERT_SEQ"} = "VMS";
 984         $platform{"PEM_write_NS_CERT_SEQ"} = "VMS";
 985         $platform{"PEM_read_P8_PRIV_KEY_INFO"} = "VMS";
 986         $platform{"PEM_write_P8_PRIV_KEY_INFO"} = "VMS";
 987         $platform{"EVP_sha384"} = "!VMSVAX";
 988         $platform{"EVP_sha512"} = "!VMSVAX";
 989         $platform{"SHA384_Init"} = "!VMSVAX";
 990         $platform{"SHA384_Transform"} = "!VMSVAX";
 991         $platform{"SHA384_Update"} = "!VMSVAX";
 992         $platform{"SHA384_Final"} = "!VMSVAX";
 993         $platform{"SHA384"} = "!VMSVAX";
 994         $platform{"SHA512_Init"} = "!VMSVAX";
 995         $platform{"SHA512_Transform"} = "!VMSVAX";
 996         $platform{"SHA512_Update"} = "!VMSVAX";
 997         $platform{"SHA512_Final"} = "!VMSVAX";
 998         $platform{"SHA512"} = "!VMSVAX";
 999
1000
1001         # Info we know about
1002
1003         push @ret, map { $_."\\".&info_string($_,"EXIST",
1004                                               $platform{$_},
1005                                               $kind{$_},
1006                                               $algorithm{$_}) } keys %syms;
1007
1008         if (keys %unknown_algorithms) {
1009                 print STDERR "WARNING: mkdef.pl doesn't know the following algorithms:\n";
1010                 print STDERR "\t",join("\n\t",keys %unknown_algorithms),"\n";
1011         }
1012         return(@ret);
1013 }
1014
1015 # Param: string of comma-separated platform-specs.
1016 sub reduce_platforms
1017 {
1018         my ($platforms) = @_;
1019         my $pl = defined($platforms) ? $platforms : "";
1020         my %p = map { $_ => 0 } split /,/, $pl;
1021         my $ret;
1022
1023         print STDERR "DEBUG: Entered reduce_platforms with \"$platforms\"\n"
1024             if $debug;
1025         # We do this, because if there's code like the following, it really
1026         # means the function exists in all cases and should therefore be
1027         # everywhere.  By increasing and decreasing, we may attain 0:
1028         #
1029         # ifndef WIN16
1030         #    int foo();
1031         # else
1032         #    int _fat foo();
1033         # endif
1034         foreach $platform (split /,/, $pl) {
1035                 if ($platform =~ /^!(.*)$/) {
1036                         $p{$1}--;
1037                 } else {
1038                         $p{$platform}++;
1039                 }
1040         }
1041         foreach $platform (keys %p) {
1042                 if ($p{$platform} == 0) { delete $p{$platform}; }
1043         }
1044
1045         delete $p{""};
1046
1047         $ret = join(',',sort(map { $p{$_} < 0 ? "!".$_ : $_ } keys %p));
1048         print STDERR "DEBUG: Exiting reduce_platforms with \"$ret\"\n"
1049             if $debug;
1050         return $ret;
1051 }
1052
1053 sub info_string {
1054         (my $symbol, my $exist, my $platforms, my $kind, my $algorithms) = @_;
1055
1056         my %a = defined($algorithms) ?
1057             map { $_ => 1 } split /,/, $algorithms : ();
1058         my $k = defined($kind) ? $kind : "FUNCTION";
1059         my $ret;
1060         my $p = &reduce_platforms($platforms);
1061
1062         delete $a{""};
1063
1064         $ret = $exist;
1065         $ret .= ":".$p;
1066         $ret .= ":".$k;
1067         $ret .= ":".join(',',sort keys %a);
1068         return $ret;
1069 }
1070
1071 sub maybe_add_info {
1072         (my $name, *nums, my @symbols) = @_;
1073         my $sym;
1074         my $new_info = 0;
1075         my %syms=();
1076
1077         print STDERR "Updating $name info\n";
1078         foreach $sym (@symbols) {
1079                 (my $s, my $i) = split /\\/, $sym;
1080                 if (defined($nums{$s})) {
1081                         $i =~ s/^(.*?:.*?:\w+)(\(\w+\))?/$1/;
1082                         (my $n, my $dummy) = split /\\/, $nums{$s};
1083                         if (!defined($dummy) || $i ne $dummy) {
1084                                 $nums{$s} = $n."\\".$i;
1085                                 $new_info++;
1086                                 print STDERR "DEBUG: maybe_add_info for $s: \"$dummy\" => \"$i\"\n" if $debug;
1087                         }
1088                 }
1089                 $syms{$s} = 1;
1090         }
1091
1092         my @s=sort { &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n") } keys %nums;
1093         foreach $sym (@s) {
1094                 (my $n, my $i) = split /\\/, $nums{$sym};
1095                 if (!defined($syms{$sym}) && $i !~ /^NOEXIST:/) {
1096                         $new_info++;
1097                         print STDERR "DEBUG: maybe_add_info for $sym: -> undefined\n" if $debug;
1098                 }
1099         }
1100         if ($new_info) {
1101                 print STDERR "$new_info old symbols got an info update\n";
1102                 if (!$do_rewrite) {
1103                         print STDERR "You should do a rewrite to fix this.\n";
1104                 }
1105         } else {
1106                 print STDERR "No old symbols needed info update\n";
1107         }
1108 }
1109
1110 # Param: string of comma-separated keywords, each possibly prefixed with a "!"
1111 sub is_valid
1112 {
1113         my ($keywords_txt,$platforms) = @_;
1114         my (@keywords) = split /,/,$keywords_txt;
1115         my ($falsesum, $truesum) = (0, 1);
1116
1117         # Param: one keyword
1118         sub recognise
1119         {
1120                 my ($keyword,$platforms) = @_;
1121
1122                 if ($platforms) {
1123                         # platforms
1124                         if ($keyword eq "VMSVAX" && $VMSVAX) { return 1; }
1125                         if ($keyword eq "VMSNonVAX" && $VMSNonVAX) { return 1; }
1126                         if ($keyword eq "VMS" && $VMS) { return 1; }
1127                         if ($keyword eq "WIN32" && $W32) { return 1; }
1128                         if ($keyword eq "WIN16" && $W16) { return 1; }
1129                         if ($keyword eq "WINNT" && $NT) { return 1; }
1130                         if ($keyword eq "OS2" && $OS2) { return 1; }
1131                         # Special platforms:
1132                         # EXPORT_VAR_AS_FUNCTION means that global variables
1133                         # will be represented as functions.  This currently
1134                         # only happens on VMS-VAX.
1135                         if ($keyword eq "EXPORT_VAR_AS_FUNCTION" && ($VMSVAX || $W32 || $W16)) {
1136                                 return 1;
1137                         }
1138                         if ($keyword eq "OPENSSL_FIPS" && $fips) {
1139                                 return 1;
1140                         }
1141                         if ($keyword eq "ZLIB" && $zlib) { return 1; }
1142                         return 0;
1143                 } else {
1144                         # algorithms
1145                         if ($keyword eq "RC2" && $no_rc2) { return 0; }
1146                         if ($keyword eq "RC4" && $no_rc4) { return 0; }
1147                         if ($keyword eq "RC5" && $no_rc5) { return 0; }
1148                         if ($keyword eq "IDEA" && $no_idea) { return 0; }
1149                         if ($keyword eq "DES" && $no_des) { return 0; }
1150                         if ($keyword eq "BF" && $no_bf) { return 0; }
1151                         if ($keyword eq "CAST" && $no_cast) { return 0; }
1152                         if ($keyword eq "MD2" && $no_md2) { return 0; }
1153                         if ($keyword eq "MD4" && $no_md4) { return 0; }
1154                         if ($keyword eq "MD5" && $no_md5) { return 0; }
1155                         if ($keyword eq "SHA" && $no_sha) { return 0; }
1156                         if ($keyword eq "RIPEMD" && $no_ripemd) { return 0; }
1157                         if ($keyword eq "MDC2" && $no_mdc2) { return 0; }
1158                         if ($keyword eq "WHIRLPOOL" && $no_whirlpool) { return 0; }
1159                         if ($keyword eq "RSA" && $no_rsa) { return 0; }
1160                         if ($keyword eq "DSA" && $no_dsa) { return 0; }
1161                         if ($keyword eq "DH" && $no_dh) { return 0; }
1162                         if ($keyword eq "EC" && $no_ec) { return 0; }
1163                         if ($keyword eq "ECDSA" && $no_ecdsa) { return 0; }
1164                         if ($keyword eq "ECDH" && $no_ecdh) { return 0; }
1165                         if ($keyword eq "HMAC" && $no_hmac) { return 0; }
1166                         if ($keyword eq "AES" && $no_aes) { return 0; }
1167                         if ($keyword eq "CAMELLIA" && $no_camellia) { return 0; }
1168                         if ($keyword eq "SEED" && $no_seed) { return 0; }
1169                         if ($keyword eq "EVP" && $no_evp) { return 0; }
1170                         if ($keyword eq "LHASH" && $no_lhash) { return 0; }
1171                         if ($keyword eq "STACK" && $no_stack) { return 0; }
1172                         if ($keyword eq "ERR" && $no_err) { return 0; }
1173                         if ($keyword eq "BUFFER" && $no_buffer) { return 0; }
1174                         if ($keyword eq "BIO" && $no_bio) { return 0; }
1175                         if ($keyword eq "COMP" && $no_comp) { return 0; }
1176                         if ($keyword eq "DSO" && $no_dso) { return 0; }
1177                         if ($keyword eq "KRB5" && $no_krb5) { return 0; }
1178                         if ($keyword eq "ENGINE" && $no_engine) { return 0; }
1179                         if ($keyword eq "HW" && $no_hw) { return 0; }
1180                         if ($keyword eq "FP_API" && $no_fp_api) { return 0; }
1181                         if ($keyword eq "STATIC_ENGINE" && $no_static_engine) { return 0; }
1182                         if ($keyword eq "GMP" && $no_gmp) { return 0; }
1183                         if ($keyword eq "RFC3779" && $no_rfc3779) { return 0; }
1184                         if ($keyword eq "TLSEXT" && $no_tlsext) { return 0; }
1185                         if ($keyword eq "PSK" && $no_psk) { return 0; }
1186                         if ($keyword eq "CMS" && $no_cms) { return 0; }
1187                         if ($keyword eq "EC2M" && $no_ec2m) { return 0; }
1188                         if ($keyword eq "NEXTPROTONEG" && $no_nextprotoneg) { return 0; }
1189                         if ($keyword eq "SSL2" && $no_ssl2) { return 0; }
1190                         if ($keyword eq "CAPIENG" && $no_capieng) { return 0; }
1191                         if ($keyword eq "JPAKE" && $no_jpake) { return 0; }
1192                         if ($keyword eq "SRP" && $no_srp) { return 0; }
1193                         if ($keyword eq "DEPRECATED" && $no_deprecated) { return 0; }
1194
1195                         # Nothing recognise as true
1196                         return 1;
1197                 }
1198         }
1199
1200         foreach $k (@keywords) {
1201                 if ($k =~ /^!(.*)$/) {
1202                         $falsesum += &recognise($1,$platforms);
1203                 } else {
1204                         $truesum *= &recognise($k,$platforms);
1205                 }
1206         }
1207         print STDERR "DEBUG: [",$#keywords,",",$#keywords < 0,"] is_valid($keywords_txt) => (\!$falsesum) && $truesum = ",(!$falsesum) && $truesum,"\n" if $debug;
1208         return (!$falsesum) && $truesum;
1209 }
1210
1211 sub print_test_file
1212 {
1213         (*OUT,my $name,*nums,my $testall,my @symbols)=@_;
1214         my $n = 1; my @e; my @r;
1215         my $sym; my $prev = ""; my $prefSSLeay;
1216
1217         (@e)=grep(/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1218         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:.*/ && !/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1219         @symbols=((sort @e),(sort @r));
1220
1221         foreach $sym (@symbols) {
1222                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1223                 my $v = 0;
1224                 $v = 1 if $i=~ /^.*?:.*?:VARIABLE/;
1225                 my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1226                 my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1227                 if (!defined($nums{$s})) {
1228                         print STDERR "Warning: $s does not have a number assigned\n"
1229                             if(!$do_update);
1230                 } elsif (is_valid($p,1) && is_valid($a,0)) {
1231                         my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1232                         if ($prev eq $s2) {
1233                                 print OUT "\t/* The following has already appeared previously */\n";
1234                                 print STDERR "Warning: Symbol '",$s2,"' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1235                         }
1236                         $prev = $s2;    # To warn about duplicates...
1237
1238                         ($nn,$ni)=($nums{$s2} =~ /^(.*?)\\(.*)$/);
1239                         if ($v) {
1240                                 print OUT "\textern int $s2; /* type unknown */ /* $nn $ni */\n";
1241                         } else {
1242                                 print OUT "\textern int $s2(); /* type unknown */ /* $nn $ni */\n";
1243                         }
1244                 }
1245         }
1246 }
1247
1248 sub get_version {
1249    local *MF;
1250    my $v = '?';
1251    open MF, 'Makefile' or return $v;
1252    while (<MF>) {
1253      $v = $1, last if /^VERSION=(.*?)\s*$/;
1254    }
1255    close MF;
1256    return $v;
1257 }
1258
1259 sub print_def_file
1260 {
1261         (*OUT,my $name,*nums,my @symbols)=@_;
1262         my $n = 1; my @e; my @r; my @v; my $prev="";
1263         my $liboptions="";
1264         my $libname = $name;
1265         my $http_vendor = 'www.openssl.org/';
1266         my $version = get_version();
1267         my $what = "OpenSSL: implementation of Secure Socket Layer";
1268         my $description = "$what $version, $name - http://$http_vendor";
1269
1270         if ($W32)
1271                 { $libname.="32"; }
1272         elsif ($W16)
1273                 { $libname.="16"; }
1274         elsif ($OS2)
1275                 { # DLL names should not clash on the whole system.
1276                   # However, they should not have any particular relationship
1277                   # to the name of the static library.  Chose descriptive names
1278                   # (must be at most 8 chars).
1279                   my %translate = (ssl => 'open_ssl', crypto => 'cryptssl');
1280                   $libname = $translate{$name} || $name;
1281                   $liboptions = <<EOO;
1282 INITINSTANCE
1283 DATA MULTIPLE NONSHARED
1284 EOO
1285                   # Vendor field can't contain colon, drat; so we omit http://
1286                   $description = "\@#$http_vendor:$version#\@$what; DLL for library $name.  Build for EMX -Zmtd";
1287                 }
1288
1289         print OUT <<"EOF";
1290 ;
1291 ; Definition file for the DLL version of the $name library from OpenSSL
1292 ;
1293
1294 LIBRARY         $libname        $liboptions
1295
1296 EOF
1297
1298         if ($W16) {
1299                 print <<"EOF";
1300 CODE            PRELOAD MOVEABLE
1301 DATA            PRELOAD MOVEABLE SINGLE
1302
1303 EXETYPE         WINDOWS
1304
1305 HEAPSIZE        4096
1306 STACKSIZE       8192
1307
1308 EOF
1309         }
1310
1311         print "EXPORTS\n";
1312
1313         (@e)=grep(/^SSLeay(\{[0-9]+\})?\\.*?:.*?:FUNCTION/,@symbols);
1314         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:FUNCTION/ && !/^SSLeay(\{[0-9]+\})?\\.*?:.*?:FUNCTION/,@symbols);
1315         (@v)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:VARIABLE/,@symbols);
1316         @symbols=((sort @e),(sort @r), (sort @v));
1317
1318
1319         foreach $sym (@symbols) {
1320                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1321                 my $v = 0;
1322                 $v = 1 if $i =~ /^.*?:.*?:VARIABLE/;
1323                 if (!defined($nums{$s})) {
1324                         printf STDERR "Warning: $s does not have a number assigned\n"
1325                             if(!$do_update);
1326                 } else {
1327                         (my $n, my $dummy) = split /\\/, $nums{$s};
1328                         my %pf = ();
1329                         my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1330                         my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1331                         if (is_valid($p,1) && is_valid($a,0)) {
1332                                 my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1333                                 if ($prev eq $s2) {
1334                                         print STDERR "Warning: Symbol '",$s2,"' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1335                                 }
1336                                 $prev = $s2;    # To warn about duplicates...
1337                                 if($v && !$OS2) {
1338                                         printf OUT "    %s%-39s @%-8d DATA\n",($W32)?"":"_",$s2,$n;
1339                                 } else {
1340                                         printf OUT "    %s%-39s @%d\n",($W32||$OS2)?"":"_",$s2,$n;
1341                                 }
1342                         }
1343                 }
1344         }
1345         printf OUT "\n";
1346 }
1347
1348 sub load_numbers
1349 {
1350         my($name)=@_;
1351         my(@a,%ret);
1352
1353         $max_num = 0;
1354         $num_noinfo = 0;
1355         $prev = "";
1356         $prev_cnt = 0;
1357
1358         open(IN,"<$name") || die "unable to open $name:$!\n";
1359         while (<IN>) {
1360                 chop;
1361                 s/#.*$//;
1362                 next if /^\s*$/;
1363                 @a=split;
1364                 if (defined $ret{$a[0]}) {
1365                         # This is actually perfectly OK
1366                         #print STDERR "Warning: Symbol '",$a[0],"' redefined. old=",$ret{$a[0]},", new=",$a[1],"\n";
1367                 }
1368                 if ($max_num > $a[1]) {
1369                         print STDERR "Warning: Number decreased from ",$max_num," to ",$a[1],"\n";
1370                 }
1371                 elsif ($max_num == $a[1]) {
1372                         # This is actually perfectly OK
1373                         #print STDERR "Warning: Symbol ",$a[0]," has same number as previous ",$prev,": ",$a[1],"\n";
1374                         if ($a[0] eq $prev) {
1375                                 $prev_cnt++;
1376                                 $a[0] .= "{$prev_cnt}";
1377                         }
1378                 }
1379                 else {
1380                         $prev_cnt = 0;
1381                 }
1382                 if ($#a < 2) {
1383                         # Existence will be proven later, in do_defs
1384                         $ret{$a[0]}=$a[1];
1385                         $num_noinfo++;
1386                 } else {
1387                         $ret{$a[0]}=$a[1]."\\".$a[2]; # \\ is a special marker
1388                 }
1389                 $max_num = $a[1] if $a[1] > $max_num;
1390                 $prev=$a[0];
1391         }
1392         if ($num_noinfo) {
1393                 print STDERR "Warning: $num_noinfo symbols were without info.";
1394                 if ($do_rewrite) {
1395                         printf STDERR "  The rewrite will fix this.\n";
1396                 } else {
1397                         printf STDERR "  You should do a rewrite to fix this.\n";
1398                 }
1399         }
1400         close(IN);
1401         return(%ret);
1402 }
1403
1404 sub parse_number
1405 {
1406         (my $str, my $what) = @_;
1407         (my $n, my $i) = split(/\\/,$str);
1408         if ($what eq "n") {
1409                 return $n;
1410         } else {
1411                 return $i;
1412         }
1413 }
1414
1415 sub rewrite_numbers
1416 {
1417         (*OUT,$name,*nums,@symbols)=@_;
1418         my $thing;
1419
1420         print STDERR "Rewriting $name\n";
1421
1422         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1423         my $r; my %r; my %rsyms;
1424         foreach $r (@r) {
1425                 (my $s, my $i) = split /\\/, $r;
1426                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1427                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1428                 $r{$a} = $s."\\".$i;
1429                 $rsyms{$s} = 1;
1430         }
1431
1432         my %syms = ();
1433         foreach $_ (@symbols) {
1434                 (my $n, my $i) = split /\\/;
1435                 $syms{$n} = 1;
1436         }
1437
1438         my @s=sort {
1439             &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n")
1440             || $a cmp $b
1441         } keys %nums;
1442         foreach $sym (@s) {
1443                 (my $n, my $i) = split /\\/, $nums{$sym};
1444                 next if defined($i) && $i =~ /^.*?:.*?:\w+\(\w+\)/;
1445                 next if defined($rsyms{$sym});
1446                 print STDERR "DEBUG: rewrite_numbers for sym = ",$sym,": i = ",$i,", n = ",$n,", rsym{sym} = ",$rsyms{$sym},"syms{sym} = ",$syms{$sym},"\n" if $debug;
1447                 $i="NOEXIST::FUNCTION:"
1448                         if !defined($i) || $i eq "" || !defined($syms{$sym});
1449                 my $s2 = $sym;
1450                 $s2 =~ s/\{[0-9]+\}$//;
1451                 printf OUT "%s%-39s %d\t%s\n","",$s2,$n,$i;
1452                 if (exists $r{$sym}) {
1453                         (my $s, $i) = split /\\/,$r{$sym};
1454                         my $s2 = $s;
1455                         $s2 =~ s/\{[0-9]+\}$//;
1456                         printf OUT "%s%-39s %d\t%s\n","",$s2,$n,$i;
1457                 }
1458         }
1459 }
1460
1461 sub update_numbers
1462 {
1463         (*OUT,$name,*nums,my $start_num, my @symbols)=@_;
1464         my $new_syms = 0;
1465
1466         print STDERR "Updating $name numbers\n";
1467
1468         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1469         my $r; my %r; my %rsyms;
1470         foreach $r (@r) {
1471                 (my $s, my $i) = split /\\/, $r;
1472                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1473                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1474                 $r{$a} = $s."\\".$i;
1475                 $rsyms{$s} = 1;
1476         }
1477
1478         foreach $sym (@symbols) {
1479                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1480                 next if $i =~ /^.*?:.*?:\w+\(\w+\)/;
1481                 next if defined($rsyms{$sym});
1482                 die "ERROR: Symbol $sym had no info attached to it."
1483                     if $i eq "";
1484                 if (!exists $nums{$s}) {
1485                         $new_syms++;
1486                         my $s2 = $s;
1487                         $s2 =~ s/\{[0-9]+\}$//;
1488                         printf OUT "%s%-39s %d\t%s\n","",$s2, ++$start_num,$i;
1489                         if (exists $r{$s}) {
1490                                 ($s, $i) = split /\\/,$r{$s};
1491                                 $s =~ s/\{[0-9]+\}$//;
1492                                 printf OUT "%s%-39s %d\t%s\n","",$s, $start_num,$i;
1493                         }
1494                 }
1495         }
1496         if($new_syms) {
1497                 print STDERR "$new_syms New symbols added\n";
1498         } else {
1499                 print STDERR "No New symbols Added\n";
1500         }
1501 }
1502
1503 sub check_existing
1504 {
1505         (*nums, my @symbols)=@_;
1506         my %existing; my @remaining;
1507         @remaining=();
1508         foreach $sym (@symbols) {
1509                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1510                 $existing{$s}=1;
1511         }
1512         foreach $sym (keys %nums) {
1513                 if (!exists $existing{$sym}) {
1514                         push @remaining, $sym;
1515                 }
1516         }
1517         if(@remaining) {
1518                 print STDERR "The following symbols do not seem to exist:\n";
1519                 foreach $sym (@remaining) {
1520                         print STDERR "\t",$sym,"\n";
1521                 }
1522         }
1523 }
1524