util/mkdef.pl

   1 #! /usr/bin/env perl
   2 # Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
   3 #
   4 # Licensed under the OpenSSL license (the "License").  You may not use
   5 # this file except in compliance with the License.  You can obtain a copy
   6 # in the file LICENSE in the source distribution or at
   7 # https://www.openssl.org/source/license.html
   8
   9 #
  10 # generate a .def file
  11 #
  12 # It does this by parsing the header files and looking for the
  13 # prototyped functions: it then prunes the output.
  14 #
  15 # Intermediary files are created, call libcrypto.num and libssl.num,
  16 # The format of these files is:
  17 #
  18 #       routine-name    nnnn    vers    info
  19 #
  20 # The "nnnn" and "vers" fields are the numeric id and version for the symbol
  21 # respectively. The "info" part is actually a colon-separated string of fields
  22 # with the following meaning:
  23 #
  24 #       existence:platform:kind:algorithms
  25 #
  26 # - "existence" can be "EXIST" or "NOEXIST" depending on if the symbol is
  27 #   found somewhere in the source,
  28 # - "platforms" is empty if it exists on all platforms, otherwise it contains
  29 #   comma-separated list of the platform, just as they are if the symbol exists
  30 #   for those platforms, or prepended with a "!" if not.  This helps resolve
  31 #   symbol name variants for platforms where the names are too long for the
  32 #   compiler or linker, or if the systems is case insensitive and there is a
  33 #   clash, or the symbol is implemented differently (see
  34 #   EXPORT_VAR_AS_FUNCTION).  This script assumes renaming of symbols is found
  35 #   in the file crypto/symhacks.h.
  36 #   The semantics for the platforms is that every item is checked against the
  37 #   environment.  For the negative items ("!FOO"), if any of them is false
  38 #   (i.e. "FOO" is true) in the environment, the corresponding symbol can't be
  39 #   used.  For the positive itms, if all of them are false in the environment,
  40 #   the corresponding symbol can't be used.  Any combination of positive and
  41 #   negative items are possible, and of course leave room for some redundancy.
  42 # - "kind" is "FUNCTION" or "VARIABLE".  The meaning of that is obvious.
  43 # - "algorithms" is a comma-separated list of algorithm names.  This helps
  44 #   exclude symbols that are part of an algorithm that some user wants to
  45 #   exclude.
  46 #
  47
  48 use lib ".";
  49 use configdata;
  50 use File::Spec::Functions;
  51
  52 my $debug=0;
  53
  54 my $crypto_num= catfile($config{sourcedir},"util","libcrypto.num");
  55 my $ssl_num=    catfile($config{sourcedir},"util","libssl.num");
  56 my $libname;
  57
  58 my $do_update = 0;
  59 my $do_rewrite = 1;
  60 my $do_crypto = 0;
  61 my $do_ssl = 0;
  62 my $do_ctest = 0;
  63 my $do_ctestall = 0;
  64 my $do_checkexist = 0;
  65
  66 my $VMS=0;
  67 my $W32=0;
  68 my $NT=0;
  69 my $linux=0;
  70 # Set this to make typesafe STACK definitions appear in DEF
  71 my $safe_stack_def = 0;
  72
  73 my @known_platforms = ( "__FreeBSD__", "PERL5",
  74                         "EXPORT_VAR_AS_FUNCTION", "ZLIB", "_WIN32"
  75                         );
  76 my @known_ossl_platforms = ( "VMS", "WIN32", "WINNT", "OS2" );
  77 my @known_algorithms = ( "RC2", "RC4", "RC5", "IDEA", "DES", "BF",
  78                          "CAST", "MD2", "MD4", "MD5", "SHA", "SHA0", "SHA1",
  79                          "SHA256", "SHA512", "RMD160",
  80                          "MDC2", "WHIRLPOOL", "RSA", "DSA", "DH", "EC", "EC2M",
  81                          "HMAC", "AES", "CAMELLIA", "SEED", "GOST", "ARIA",
  82                          "SCRYPT", "CHACHA", "POLY1305", "BLAKE2",
  83                          "SIPHASH",
  84                          # EC_NISTP_64_GCC_128
  85                          "EC_NISTP_64_GCC_128",
  86                          # Envelope "algorithms"
  87                          "EVP", "X509", "ASN1_TYPEDEFS",
  88                          # Helper "algorithms"
  89                          "BIO", "COMP", "BUFFER", "LHASH", "STACK", "ERR",
  90                          "LOCKING",
  91                          # External "algorithms"
  92                          "FP_API", "STDIO", "SOCK", "DGRAM",
  93                          "CRYPTO_MDEBUG",
  94                          # Engines
  95                          "STATIC_ENGINE", "ENGINE", "HW", "GMP",
  96                          # Entropy Gathering
  97                          "EGD",
  98                          # Certificate Transparency
  99                          "CT",
 100                          # RFC3779
 101                          "RFC3779",
 102                          # TLS
 103                          "PSK", "SRP", "HEARTBEATS",
 104                          # CMS
 105                          "CMS",
 106                          "OCSP",
 107                          # CryptoAPI Engine
 108                          "CAPIENG",
 109                          # SSL methods
 110                          "SSL3_METHOD", "TLS1_METHOD", "TLS1_1_METHOD", "TLS1_2_METHOD", "DTLS1_METHOD", "DTLS1_2_METHOD",
 111                          # NEXTPROTONEG
 112                          "NEXTPROTONEG",
 113                          # Deprecated functions
 114                          "DEPRECATEDIN_0_9_8",
 115                          "DEPRECATEDIN_1_0_0",
 116                          "DEPRECATEDIN_1_1_0",
 117                          # SCTP
 118                          "SCTP",
 119                          # SRTP
 120                          "SRTP",
 121                          # SSL TRACE
 122                          "SSL_TRACE",
 123                          # Unit testing
 124                          "UNIT_TEST",
 125                          # User Interface
 126                          "UI",
 127                          #
 128                          "TS",
 129                          # OCB mode
 130                          "OCB",
 131                          "CMAC",
 132                          # APPLINK (win build feature?)
 133                          "APPLINK"
 134                      );
 135
 136 my %disabled_algorithms;
 137
 138 foreach (@known_algorithms) {
 139     $disabled_algorithms{$_} = 0;
 140 }
 141 # disabled by default
 142 $disabled_algorithms{"STATIC_ENGINE"} = 1;
 143
 144 my $zlib;
 145
 146 foreach (@ARGV, split(/ /, $config{options}))
 147         {
 148         $debug=1 if $_ eq "debug";
 149         $W32=1 if $_ eq "32";
 150         die "win16 not supported" if $_ eq "16";
 151         if($_ eq "NT") {
 152                 $W32 = 1;
 153                 $NT = 1;
 154         }
 155         if ($_ eq "linux") {
 156                 $linux=1;
 157         }
 158         $VMS=1 if $_ eq "VMS";
 159         if ($_ eq "zlib" || $_ eq "enable-zlib" || $_ eq "zlib-dynamic"
 160                          || $_ eq "enable-zlib-dynamic") {
 161                 $zlib = 1;
 162         }
 163
 164         $do_ssl=1 if $_ eq "libssl";
 165         if ($_ eq "ssl") {
 166                 $do_ssl=1;
 167                 $libname=$_
 168         }
 169         $do_crypto=1 if $_ eq "libcrypto";
 170         if ($_ eq "crypto") {
 171                 $do_crypto=1;
 172                 $libname=$_;
 173         }
 174         $do_update=1 if $_ eq "update";
 175         $do_rewrite=1 if $_ eq "rewrite";
 176         $do_ctest=1 if $_ eq "ctest";
 177         $do_ctestall=1 if $_ eq "ctestall";
 178         $do_checkexist=1 if $_ eq "exist";
 179         if (/^--api=(\d+)\.(\d+)\.(\d+)$/) {
 180                 my $apiv = sprintf "%x%02x%02x", $1, $2, $3;
 181                 foreach (keys %disabled_algorithms) {
 182                         if (/^DEPRECATEDIN_(\d+)_(\d+)_(\d+)$/) {
 183                                 my $depv = sprintf "%x%02x%02x", $1, $2, $3;
 184                                 $disabled_algorithms{$_} = 1 if $apiv ge $depv;
 185                         }
 186                 }
 187         }
 188         if (/^no-deprecated$/) {
 189                 foreach (keys %disabled_algorithms) {
 190                         if (/^DEPRECATEDIN_/) {
 191                                 $disabled_algorithms{$_} = 1;
 192                         }
 193                 }
 194         }
 195         elsif (/^(enable|disable|no)-(.*)$/) {
 196                 my $alg = uc $2;
 197         $alg =~ tr/-/_/;
 198                 if (exists $disabled_algorithms{$alg}) {
 199                         $disabled_algorithms{$alg} = $1 eq "enable" ? 0 : 1;
 200                 }
 201         }
 202
 203         }
 204
 205 if (!$libname) {
 206         if ($do_ssl) {
 207                 $libname="LIBSSL";
 208         }
 209         if ($do_crypto) {
 210                 $libname="LIBCRYPTO";
 211         }
 212 }
 213
 214 # If no platform is given, assume WIN32
 215 if ($W32 + $VMS + $linux == 0) {
 216         $W32 = 1;
 217 }
 218 die "Please, only one platform at a time"
 219     if ($W32 + $VMS + $linux > 1);
 220
 221 if (!$do_ssl && !$do_crypto)
 222         {
 223         print STDERR "usage: $0 ( ssl | crypto ) [ 16 | 32 | NT | OS2 | linux | VMS ]\n";
 224         exit(1);
 225         }
 226
 227 %ssl_list=&load_numbers($ssl_num);
 228 $max_ssl = $max_num;
 229 %crypto_list=&load_numbers($crypto_num);
 230 $max_crypto = $max_num;
 231
 232 my $ssl="include/openssl/ssl.h";
 233 $ssl.=" include/openssl/tls1.h";
 234 $ssl.=" include/openssl/srtp.h";
 235
 236 # We use headers found in include/openssl and include/internal only.
 237 # The latter is needed so libssl.so/.dll/.exe can link properly.
 238 my $crypto ="include/openssl/crypto.h";
 239 $crypto.=" include/internal/o_dir.h";
 240 $crypto.=" include/internal/o_str.h";
 241 $crypto.=" include/internal/err.h";
 242 $crypto.=" include/internal/asn1t.h";
 243 $crypto.=" include/openssl/des.h" ; # unless $no_des;
 244 $crypto.=" include/openssl/idea.h" ; # unless $no_idea;
 245 $crypto.=" include/openssl/rc4.h" ; # unless $no_rc4;
 246 $crypto.=" include/openssl/rc5.h" ; # unless $no_rc5;
 247 $crypto.=" include/openssl/rc2.h" ; # unless $no_rc2;
 248 $crypto.=" include/openssl/blowfish.h" ; # unless $no_bf;
 249 $crypto.=" include/openssl/cast.h" ; # unless $no_cast;
 250 $crypto.=" include/openssl/whrlpool.h" ;
 251 $crypto.=" include/openssl/md2.h" ; # unless $no_md2;
 252 $crypto.=" include/openssl/md4.h" ; # unless $no_md4;
 253 $crypto.=" include/openssl/md5.h" ; # unless $no_md5;
 254 $crypto.=" include/openssl/mdc2.h" ; # unless $no_mdc2;
 255 $crypto.=" include/openssl/sha.h" ; # unless $no_sha;
 256 $crypto.=" include/openssl/ripemd.h" ; # unless $no_ripemd;
 257 $crypto.=" include/openssl/aes.h" ; # unless $no_aes;
 258 $crypto.=" include/openssl/camellia.h" ; # unless $no_camellia;
 259 $crypto.=" include/openssl/seed.h"; # unless $no_seed;
 260
 261 $crypto.=" include/openssl/bn.h";
 262 $crypto.=" include/openssl/rsa.h" ; # unless $no_rsa;
 263 $crypto.=" include/openssl/dsa.h" ; # unless $no_dsa;
 264 $crypto.=" include/openssl/dh.h" ; # unless $no_dh;
 265 $crypto.=" include/openssl/ec.h" ; # unless $no_ec;
 266 $crypto.=" include/openssl/hmac.h" ; # unless $no_hmac;
 267 $crypto.=" include/openssl/cmac.h" ;
 268
 269 $crypto.=" include/openssl/engine.h"; # unless $no_engine;
 270 $crypto.=" include/openssl/stack.h" ; # unless $no_stack;
 271 $crypto.=" include/openssl/buffer.h" ; # unless $no_buffer;
 272 $crypto.=" include/openssl/bio.h" ; # unless $no_bio;
 273 $crypto.=" include/internal/dso.h" ; # unless $no_dso;
 274 $crypto.=" include/openssl/lhash.h" ; # unless $no_lhash;
 275 $crypto.=" include/openssl/conf.h";
 276 $crypto.=" include/openssl/txt_db.h";
 277
 278 $crypto.=" include/openssl/evp.h" ; # unless $no_evp;
 279 $crypto.=" include/openssl/objects.h";
 280 $crypto.=" include/openssl/pem.h";
 281 #$crypto.=" include/openssl/meth.h";
 282 $crypto.=" include/openssl/asn1.h";
 283 $crypto.=" include/openssl/asn1t.h";
 284 $crypto.=" include/openssl/err.h" ; # unless $no_err;
 285 $crypto.=" include/openssl/pkcs7.h";
 286 $crypto.=" include/openssl/pkcs12.h";
 287 $crypto.=" include/openssl/x509.h";
 288 $crypto.=" include/openssl/x509_vfy.h";
 289 $crypto.=" include/openssl/x509v3.h";
 290 $crypto.=" include/openssl/ts.h";
 291 $crypto.=" include/openssl/rand.h";
 292 $crypto.=" include/openssl/comp.h" ; # unless $no_comp;
 293 $crypto.=" include/openssl/ocsp.h";
 294 $crypto.=" include/openssl/ui.h";
 295 #$crypto.=" include/openssl/store.h";
 296 $crypto.=" include/openssl/cms.h";
 297 $crypto.=" include/openssl/srp.h";
 298 $crypto.=" include/openssl/modes.h";
 299 $crypto.=" include/openssl/async.h";
 300 $crypto.=" include/openssl/ct.h";
 301 $crypto.=" include/openssl/kdf.h";
 302
 303 my $symhacks="include/openssl/symhacks.h";
 304
 305 my @ssl_symbols = &do_defs("LIBSSL", $ssl, $symhacks);
 306 my @crypto_symbols = &do_defs("LIBCRYPTO", $crypto, $symhacks);
 307
 308 if ($do_update) {
 309
 310 if ($do_ssl == 1) {
 311
 312         &maybe_add_info("LIBSSL",*ssl_list,@ssl_symbols);
 313         if ($do_rewrite == 1) {
 314                 open(OUT, ">$ssl_num");
 315                 &rewrite_numbers(*OUT,"LIBSSL",*ssl_list,@ssl_symbols);
 316         } else {
 317                 open(OUT, ">>$ssl_num");
 318         }
 319         &update_numbers(*OUT,"LIBSSL",*ssl_list,$max_ssl,@ssl_symbols);
 320         close OUT;
 321 }
 322
 323 if($do_crypto == 1) {
 324
 325         &maybe_add_info("LIBCRYPTO",*crypto_list,@crypto_symbols);
 326         if ($do_rewrite == 1) {
 327                 open(OUT, ">$crypto_num");
 328                 &rewrite_numbers(*OUT,"LIBCRYPTO",*crypto_list,@crypto_symbols);
 329         } else {
 330                 open(OUT, ">>$crypto_num");
 331         }
 332         &update_numbers(*OUT,"LIBCRYPTO",*crypto_list,$max_crypto,@crypto_symbols);
 333         close OUT;
 334 }
 335
 336 } elsif ($do_checkexist) {
 337         &check_existing(*ssl_list, @ssl_symbols)
 338                 if $do_ssl == 1;
 339         &check_existing(*crypto_list, @crypto_symbols)
 340                 if $do_crypto == 1;
 341 } elsif ($do_ctest || $do_ctestall) {
 342
 343         print <<"EOF";
 344
 345 /* Test file to check all DEF file symbols are present by trying
 346  * to link to all of them. This is *not* intended to be run!
 347  */
 348
 349 int main()
 350 {
 351 EOF
 352         &print_test_file(*STDOUT,"LIBSSL",*ssl_list,$do_ctestall,@ssl_symbols)
 353                 if $do_ssl == 1;
 354
 355         &print_test_file(*STDOUT,"LIBCRYPTO",*crypto_list,$do_ctestall,@crypto_symbols)
 356                 if $do_crypto == 1;
 357
 358         print "}\n";
 359
 360 } else {
 361
 362         &print_def_file(*STDOUT,$libname,*ssl_list,@ssl_symbols)
 363                 if $do_ssl == 1;
 364
 365         &print_def_file(*STDOUT,$libname,*crypto_list,@crypto_symbols)
 366                 if $do_crypto == 1;
 367
 368 }
 369
 370
 371 sub do_defs
 372 {
 373         my($name,$files,$symhacksfile)=@_;
 374         my $file;
 375         my @ret;
 376         my %syms;
 377         my %platform;           # For anything undefined, we assume ""
 378         my %kind;               # For anything undefined, we assume "FUNCTION"
 379         my %algorithm;          # For anything undefined, we assume ""
 380         my %variant;
 381         my %variant_cnt;        # To be able to allocate "name{n}" if "name"
 382                                 # is the same name as the original.
 383         my $cpp;
 384         my %unknown_algorithms = ();
 385         my $parens = 0;
 386
 387         foreach $file (split(/\s+/,$symhacksfile." ".$files))
 388                 {
 389                 my $fn = catfile($config{sourcedir},$file);
 390                 print STDERR "DEBUG: starting on $fn:\n" if $debug;
 391                 open(IN,"<$fn") || die "unable to open $fn:$!\n";
 392                 my $line = "", my $def= "";
 393                 my %tag = (
 394                         (map { $_ => 0 } @known_platforms),
 395                         (map { "OPENSSL_SYS_".$_ => 0 } @known_ossl_platforms),
 396                         (map { "OPENSSL_NO_".$_ => 0 } @known_algorithms),
 397                         (map { "OPENSSL_USE_".$_ => 0 } @known_algorithms),
 398                         NOPROTO         => 0,
 399                         PERL5           => 0,
 400                         _WINDLL         => 0,
 401                         CONST_STRICT    => 0,
 402                         TRUE            => 1,
 403                 );
 404                 my $symhacking = $file eq $symhacksfile;
 405                 my @current_platforms = ();
 406                 my @current_algorithms = ();
 407
 408                 # params: symbol, alias, platforms, kind
 409                 # The reason to put this subroutine in a variable is that
 410                 # it will otherwise create it's own, unshared, version of
 411                 # %tag and %variant...
 412                 my $make_variant = sub
 413                 {
 414                         my ($s, $a, $p, $k) = @_;
 415                         my ($a1, $a2);
 416
 417                         print STDERR "DEBUG: make_variant: Entered with ",$s,", ",$a,", ",(defined($p)?$p:""),", ",(defined($k)?$k:""),"\n" if $debug;
 418                         if (defined($p))
 419                         {
 420                                 $a1 = join(",",$p,
 421                                            grep(!/^$/,
 422                                                 map { $tag{$_} == 1 ? $_ : "" }
 423                                                 @known_platforms));
 424                         }
 425                         else
 426                         {
 427                                 $a1 = join(",",
 428                                            grep(!/^$/,
 429                                                 map { $tag{$_} == 1 ? $_ : "" }
 430                                                 @known_platforms));
 431                         }
 432                         $a2 = join(",",
 433                                    grep(!/^$/,
 434                                         map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ : "" }
 435                                         @known_ossl_platforms));
 436                         print STDERR "DEBUG: make_variant: a1 = $a1; a2 = $a2\n" if $debug;
 437                         if ($a1 eq "") { $a1 = $a2; }
 438                         elsif ($a1 ne "" && $a2 ne "") { $a1 .= ",".$a2; }
 439                         if ($a eq $s)
 440                         {
 441                                 if (!defined($variant_cnt{$s}))
 442                                 {
 443                                         $variant_cnt{$s} = 0;
 444                                 }
 445                                 $variant_cnt{$s}++;
 446                                 $a .= "{$variant_cnt{$s}}";
 447                         }
 448                         my $toadd = $a.":".$a1.(defined($k)?":".$k:"");
 449                         my $togrep = $s.'(\{[0-9]+\})?:'.$a1.(defined($k)?":".$k:"");
 450                         if (!grep(/^$togrep$/,
 451                                   split(/;/, defined($variant{$s})?$variant{$s}:""))) {
 452                                 if (defined($variant{$s})) { $variant{$s} .= ";"; }
 453                                 $variant{$s} .= $toadd;
 454                         }
 455                         print STDERR "DEBUG: make_variant: Exit with variant of ",$s," = ",$variant{$s},"\n" if $debug;
 456                 };
 457
 458                 print STDERR "DEBUG: parsing ----------\n" if $debug;
 459                 while(<IN>) {
 460                         if($parens > 0) {
 461                                 #Inside a DEPRECATEDIN
 462                                 $stored_multiline .= $_;
 463                                 $stored_multiline =~ s|\R$||; # Better chomp
 464                                 print STDERR "DEBUG: Continuing multiline DEPRECATEDIN: $stored_multiline\n" if $debug;
 465                                 $parens = count_parens($stored_multiline);
 466                                 if ($parens == 0) {
 467                                         $def .= do_deprecated($stored_multiline,
 468                                                         \@current_platforms,
 469                                                         \@current_algorithms);
 470                                 }
 471                                 next;
 472                         }
 473                         if (/\/\* Error codes for the \w+ functions\. \*\//)
 474                                 {
 475                                 undef @tag;
 476                                 last;
 477                                 }
 478                         if ($line ne '') {
 479                                 $_ = $line . $_;
 480                                 $line = '';
 481                         }
 482
 483                         if (/\\$/) {
 484                                 $line = $`; # keep what was before the backslash
 485                                 next;
 486                         }
 487
 488                         if(/\/\*/) {
 489                                 if (not /\*\//) {       # multiline comment...
 490                                         $line = $_;     # ... just accumulate
 491                                         next;
 492                                 } else {
 493                                         s/\/\*.*?\*\///gs;# wipe it
 494                                 }
 495                         }
 496
 497                         if ($cpp) {
 498                                 $cpp++ if /^#\s*if/;
 499                                 $cpp-- if /^#\s*endif/;
 500                                 next;
 501                         }
 502                         if (/^#.*ifdef.*cplusplus/) {
 503                                 $cpp = 1;
 504                                 next;
 505                         }
 506
 507                         s/{[^{}]*}//gs;                      # ignore {} blocks
 508                         print STDERR "DEBUG: \$def=\"$def\"\n" if $debug && $def ne "";
 509                         print STDERR "DEBUG: \$_=\"$_\"\n" if $debug;
 510                         if (/^\#\s*ifndef\s+(.*)/) {
 511                                 push(@tag,"-");
 512                                 push(@tag,$1);
 513                                 $tag{$1}=-1;
 514                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
 515                         } elsif (/^\#\s*if\s+!defined\(([^\)]+)\)/) {
 516                                 push(@tag,"-");
 517                                 if (/^\#\s*if\s+(!defined\(([^\)]+)\)(\s+\&\&\s+!defined\(([^\)]+)\))*)$/) {
 518                                         my $tmp_1 = $1;
 519                                         my $tmp_;
 520                                         foreach $tmp_ (split '\&\&',$tmp_1) {
 521                                                 $tmp_ =~ /!defined\(([^\)]+)\)/;
 522                                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
 523                                                 push(@tag,$1);
 524                                                 $tag{$1}=-1;
 525                                         }
 526                                 } else {
 527                                         print STDERR "Warning: $file: complicated expression: $_" if $debug; # because it is O...
 528                                         print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
 529                                         push(@tag,$1);
 530                                         $tag{$1}=-1;
 531                                 }
 532                         } elsif (/^\#\s*ifdef\s+(\S*)/) {
 533                                 push(@tag,"-");
 534                                 push(@tag,$1);
 535                                 $tag{$1}=1;
 536                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
 537                         } elsif (/^\#\s*if\s+defined\(([^\)]+)\)/) {
 538                                 push(@tag,"-");
 539                                 if (/^\#\s*if\s+(defined\(([^\)]+)\)(\s+\|\|\s+defined\(([^\)]+)\))*)$/) {
 540                                         my $tmp_1 = $1;
 541                                         my $tmp_;
 542                                         foreach $tmp_ (split '\|\|',$tmp_1) {
 543                                                 $tmp_ =~ /defined\(([^\)]+)\)/;
 544                                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
 545                                                 push(@tag,$1);
 546                                                 $tag{$1}=1;
 547                                         }
 548                                 } else {
 549                                         print STDERR "Warning: $file: complicated expression: $_\n" if $debug; # because it is O...
 550                                         print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
 551                                         push(@tag,$1);
 552                                         $tag{$1}=1;
 553                                 }
 554                         } elsif (/^\#\s*error\s+(\w+) is disabled\./) {
 555                                 my $tag_i = $#tag;
 556                                 while($tag[$tag_i] ne "-") {
 557                                         if ($tag[$tag_i] eq "OPENSSL_NO_".$1) {
 558                                                 $tag{$tag[$tag_i]}=2;
 559                                                 print STDERR "DEBUG: $file: chaged tag $1 = 2\n" if $debug;
 560                                         }
 561                                         $tag_i--;
 562                                 }
 563                         } elsif (/^\#\s*endif/) {
 564                                 my $tag_i = $#tag;
 565                                 while($tag_i > 0 && $tag[$tag_i] ne "-") {
 566                                         my $t=$tag[$tag_i];
 567                                         print STDERR "DEBUG: \$t=\"$t\"\n" if $debug;
 568                                         if ($tag{$t}==2) {
 569                                                 $tag{$t}=-1;
 570                                         } else {
 571                                                 $tag{$t}=0;
 572                                         }
 573                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
 574                                         pop(@tag);
 575                                         if ($t =~ /^OPENSSL_NO_([A-Z0-9_]+)$/) {
 576                                                 $t=$1;
 577                                         } elsif($t =~ /^OPENSSL_USE_([A-Z0-9_]+)$/) {
 578                                                 $t=$1;
 579                                         } else {
 580                                                 $t="";
 581                                         }
 582                                         if ($t ne ""
 583                                             && !grep(/^$t$/, @known_algorithms)) {
 584                                                 $unknown_algorithms{$t} = 1;
 585                                                 #print STDERR "DEBUG: Added as unknown algorithm: $t\n" if $debug;
 586                                         }
 587                                         $tag_i--;
 588                                 }
 589                                 pop(@tag);
 590                         } elsif (/^\#\s*else/) {
 591                                 my $tag_i = $#tag;
 592                                 die "$file unmatched else\n" if $tag_i < 0;
 593                                 while($tag[$tag_i] ne "-") {
 594                                         my $t=$tag[$tag_i];
 595                                         $tag{$t}= -$tag{$t};
 596                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
 597                                         $tag_i--;
 598                                 }
 599                         } elsif (/^\#\s*if\s+1/) {
 600                                 push(@tag,"-");
 601                                 # Dummy tag
 602                                 push(@tag,"TRUE");
 603                                 $tag{"TRUE"}=1;
 604                                 print STDERR "DEBUG: $file: found 1\n" if $debug;
 605                         } elsif (/^\#\s*if\s+0/) {
 606                                 push(@tag,"-");
 607                                 # Dummy tag
 608                                 push(@tag,"TRUE");
 609                                 $tag{"TRUE"}=-1;
 610                                 print STDERR "DEBUG: $file: found 0\n" if $debug;
 611                         } elsif (/^\#\s*if\s+/) {
 612                                 #Some other unrecognized "if" style
 613                                 push(@tag,"-");
 614                         } elsif (/^\#\s*define\s+(\w+)\s+(\w+)/
 615                                  && $symhacking && $tag{'TRUE'} != -1) {
 616                                 # This is for aliasing.  When we find an alias,
 617                                 # we have to invert
 618                                 &$make_variant($1,$2);
 619                                 print STDERR "DEBUG: $file: defined $1 = $2\n" if $debug;
 620                         }
 621                         if (/^\#/) {
 622                                 @current_platforms =
 623                                     grep(!/^$/,
 624                                          map { $tag{$_} == 1 ? $_ :
 625                                                    $tag{$_} == -1 ? "!".$_  : "" }
 626                                          @known_platforms);
 627                                 push @current_platforms
 628                                     , grep(!/^$/,
 629                                            map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ :
 630                                                      $tag{"OPENSSL_SYS_".$_} == -1 ? "!".$_  : "" }
 631                                            @known_ossl_platforms);
 632                                 @current_algorithms = ();
 633                                 @current_algorithms =
 634                                     grep(!/^$/,
 635                                          map { $tag{"OPENSSL_NO_".$_} == -1 ? $_ : "" }
 636                                          @known_algorithms);
 637                                 push @current_algorithms
 638                                     , grep(!/^$/,
 639                                          map { $tag{"OPENSSL_USE_".$_} == 1 ? $_ : "" }
 640                                          @known_algorithms);
 641                                 $def .=
 642                                     "#INFO:"
 643                                         .join(',',@current_platforms).":"
 644                                             .join(',',@current_algorithms).";";
 645                                 next;
 646                         }
 647                         if ($tag{'TRUE'} != -1) {
 648                                 if (/^\s*DEFINE_STACK_OF\s*\(\s*(\w*)\s*\)/
 649                                                 || /^\s*DEFINE_STACK_OF_CONST\s*\(\s*(\w*)\s*\)/) {
 650                                         next;
 651                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 652                                         $def .= "int d2i_$3(void);";
 653                                         $def .= "int i2d_$3(void);";
 654                                         # Variant for platforms that do not
 655                                         # have to access globale variables
 656                                         # in shared libraries through functions
 657                                         $def .=
 658                                             "#INFO:"
 659                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 660                                                     .join(',',@current_algorithms).";";
 661                                         $def .= "OPENSSL_EXTERN int $2_it;";
 662                                         $def .=
 663                                             "#INFO:"
 664                                                 .join(',',@current_platforms).":"
 665                                                     .join(',',@current_algorithms).";";
 666                                         # Variant for platforms that have to
 667                                         # access globale variables in shared
 668                                         # libraries through functions
 669                                         &$make_variant("$2_it","$2_it",
 670                                                       "EXPORT_VAR_AS_FUNCTION",
 671                                                       "FUNCTION");
 672                                         next;
 673                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_fname\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 674                                         $def .= "int d2i_$3(void);";
 675                                         $def .= "int i2d_$3(void);";
 676                                         $def .= "int $3_free(void);";
 677                                         $def .= "int $3_new(void);";
 678                                         # Variant for platforms that do not
 679                                         # have to access globale variables
 680                                         # in shared libraries through functions
 681                                         $def .=
 682                                             "#INFO:"
 683                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 684                                                     .join(',',@current_algorithms).";";
 685                                         $def .= "OPENSSL_EXTERN int $2_it;";
 686                                         $def .=
 687                                             "#INFO:"
 688                                                 .join(',',@current_platforms).":"
 689                                                     .join(',',@current_algorithms).";";
 690                                         # Variant for platforms that have to
 691                                         # access globale variables in shared
 692                                         # libraries through functions
 693                                         &$make_variant("$2_it","$2_it",
 694                                                       "EXPORT_VAR_AS_FUNCTION",
 695                                                       "FUNCTION");
 696                                         next;
 697                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS\s*\(\s*(\w*)\s*\)/ ||
 698                                          /^\s*DECLARE_ASN1_FUNCTIONS_const\s*\(\s*(\w*)\s*\)/) {
 699                                         $def .= "int d2i_$1(void);";
 700                                         $def .= "int i2d_$1(void);";
 701                                         $def .= "int $1_free(void);";
 702                                         $def .= "int $1_new(void);";
 703                                         # Variant for platforms that do not
 704                                         # have to access globale variables
 705                                         # in shared libraries through functions
 706                                         $def .=
 707                                             "#INFO:"
 708                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 709                                                     .join(',',@current_algorithms).";";
 710                                         $def .= "OPENSSL_EXTERN int $1_it;";
 711                                         $def .=
 712                                             "#INFO:"
 713                                                 .join(',',@current_platforms).":"
 714                                                     .join(',',@current_algorithms).";";
 715                                         # Variant for platforms that have to
 716                                         # access globale variables in shared
 717                                         # libraries through functions
 718                                         &$make_variant("$1_it","$1_it",
 719                                                       "EXPORT_VAR_AS_FUNCTION",
 720                                                       "FUNCTION");
 721                                         next;
 722                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS_const\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 723                                         $def .= "int d2i_$2(void);";
 724                                         $def .= "int i2d_$2(void);";
 725                                         # Variant for platforms that do not
 726                                         # have to access globale variables
 727                                         # in shared libraries through functions
 728                                         $def .=
 729                                             "#INFO:"
 730                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 731                                                     .join(',',@current_algorithms).";";
 732                                         $def .= "OPENSSL_EXTERN int $2_it;";
 733                                         $def .=
 734                                             "#INFO:"
 735                                                 .join(',',@current_platforms).":"
 736                                                     .join(',',@current_algorithms).";";
 737                                         # Variant for platforms that have to
 738                                         # access globale variables in shared
 739                                         # libraries through functions
 740                                         &$make_variant("$2_it","$2_it",
 741                                                       "EXPORT_VAR_AS_FUNCTION",
 742                                                       "FUNCTION");
 743                                         next;
 744                                 } elsif (/^\s*DECLARE_ASN1_ALLOC_FUNCTIONS\s*\(\s*(\w*)\s*\)/) {
 745                                         $def .= "int $1_free(void);";
 746                                         $def .= "int $1_new(void);";
 747                                         next;
 748                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 749                                         $def .= "int d2i_$2(void);";
 750                                         $def .= "int i2d_$2(void);";
 751                                         $def .= "int $2_free(void);";
 752                                         $def .= "int $2_new(void);";
 753                                         # Variant for platforms that do not
 754                                         # have to access globale variables
 755                                         # in shared libraries through functions
 756                                         $def .=
 757                                             "#INFO:"
 758                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 759                                                     .join(',',@current_algorithms).";";
 760                                         $def .= "OPENSSL_EXTERN int $2_it;";
 761                                         $def .=
 762                                             "#INFO:"
 763                                                 .join(',',@current_platforms).":"
 764                                                     .join(',',@current_algorithms).";";
 765                                         # Variant for platforms that have to
 766                                         # access globale variables in shared
 767                                         # libraries through functions
 768                                         &$make_variant("$2_it","$2_it",
 769                                                       "EXPORT_VAR_AS_FUNCTION",
 770                                                       "FUNCTION");
 771                                         next;
 772                                 } elsif (/^\s*DECLARE_ASN1_ITEM\s*\(\s*(\w*)\s*\)/) {
 773                                         # Variant for platforms that do not
 774                                         # have to access globale variables
 775                                         # in shared libraries through functions
 776                                         $def .=
 777                                             "#INFO:"
 778                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 779                                                     .join(',',@current_algorithms).";";
 780                                         $def .= "OPENSSL_EXTERN int $1_it;";
 781                                         $def .=
 782                                             "#INFO:"
 783                                                 .join(',',@current_platforms).":"
 784                                                     .join(',',@current_algorithms).";";
 785                                         # Variant for platforms that have to
 786                                         # access globale variables in shared
 787                                         # libraries through functions
 788                                         &$make_variant("$1_it","$1_it",
 789                                                       "EXPORT_VAR_AS_FUNCTION",
 790                                                       "FUNCTION");
 791                                         next;
 792                                 } elsif (/^\s*DECLARE_ASN1_NDEF_FUNCTION\s*\(\s*(\w*)\s*\)/) {
 793                                         $def .= "int i2d_$1_NDEF(void);";
 794                                 } elsif (/^\s*DECLARE_ASN1_SET_OF\s*\(\s*(\w*)\s*\)/) {
 795                                         next;
 796                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION\s*\(\s*(\w*)\s*\)/) {
 797                                         $def .= "int $1_print_ctx(void);";
 798                                         next;
 799                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 800                                         $def .= "int $2_print_ctx(void);";
 801                                         next;
 802                                 } elsif (/^\s*DECLARE_PKCS12_STACK_OF\s*\(\s*(\w*)\s*\)/) {
 803                                         next;
 804                                 } elsif (/^DECLARE_PEM_rw\s*\(\s*(\w*)\s*,/ ||
 805                                          /^DECLARE_PEM_rw_cb\s*\(\s*(\w*)\s*,/ ||
 806                                          /^DECLARE_PEM_rw_const\s*\(\s*(\w*)\s*,/ ) {
 807                                         $def .=
 808                                             "#INFO:"
 809                                                 .join(',',@current_platforms).":"
 810                                                     .join(',',"STDIO",@current_algorithms).";";
 811                                         $def .= "int PEM_read_$1(void);";
 812                                         $def .= "int PEM_write_$1(void);";
 813                                         $def .=
 814                                             "#INFO:"
 815                                                 .join(',',@current_platforms).":"
 816                                                     .join(',',@current_algorithms).";";
 817                                         # Things that are everywhere
 818                                         $def .= "int PEM_read_bio_$1(void);";
 819                                         $def .= "int PEM_write_bio_$1(void);";
 820                                         next;
 821                                 } elsif (/^DECLARE_PEM_write\s*\(\s*(\w*)\s*,/ ||
 822                                         /^DECLARE_PEM_write_const\s*\(\s*(\w*)\s*,/ ||
 823                                          /^DECLARE_PEM_write_cb\s*\(\s*(\w*)\s*,/ ) {
 824                                         $def .=
 825                                             "#INFO:"
 826                                                 .join(',',@current_platforms).":"
 827                                                     .join(',',"STDIO",@current_algorithms).";";
 828                                         $def .= "int PEM_write_$1(void);";
 829                                         $def .=
 830                                             "#INFO:"
 831                                                 .join(',',@current_platforms).":"
 832                                                     .join(',',@current_algorithms).";";
 833                                         # Things that are everywhere
 834                                         $def .= "int PEM_write_bio_$1(void);";
 835                                         next;
 836                                 } elsif (/^DECLARE_PEM_read\s*\(\s*(\w*)\s*,/ ||
 837                                          /^DECLARE_PEM_read_cb\s*\(\s*(\w*)\s*,/ ) {
 838                                         $def .=
 839                                             "#INFO:"
 840                                                 .join(',',@current_platforms).":"
 841                                                     .join(',',"STDIO",@current_algorithms).";";
 842                                         $def .= "int PEM_read_$1(void);";
 843                                         $def .=
 844                                             "#INFO:"
 845                                                 .join(',',@current_platforms).":"
 846                                                     .join(',',"STDIO",@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 (/^\s*DEPRECATEDIN/) {
 870                                         $parens = count_parens($_);
 871                                         if ($parens == 0) {
 872                                                 $def .= do_deprecated($_,
 873                                                         \@current_platforms,
 874                                                         \@current_algorithms);
 875                                         } else {
 876                                                 $stored_multiline = $_;
 877                                                 $stored_multiline =~ s|\R$||;
 878                                                 print STDERR "DEBUG: Found multiline DEPRECATEDIN starting with: $stored_multiline\n" if $debug;
 879                                                 next;
 880                                         }
 881                                 } elsif ($tag{'CONST_STRICT'} != 1) {
 882                                         if (/\{|\/\*|\([^\)]*$/) {
 883                                                 $line = $_;
 884                                         } else {
 885                                                 $def .= $_;
 886                                         }
 887                                 }
 888                         }
 889                 }
 890                 close(IN);
 891                 die "$file: Unmatched tags\n" if $#tag >= 0;
 892
 893                 my $algs;
 894                 my $plays;
 895
 896                 print STDERR "DEBUG: postprocessing ----------\n" if $debug;
 897                 foreach (split /;/, $def) {
 898                         my $s; my $k = "FUNCTION"; my $p; my $a;
 899                         s/^[\n\s]*//g;
 900                         s/[\n\s]*$//g;
 901                         next if(/\#undef/);
 902                         next if(/typedef\W/);
 903                         next if(/\#define/);
 904
 905                         # Reduce argument lists to empty ()
 906                         # fold round brackets recursively: (t(*v)(t),t) -> (t{}{},t) -> {}
 907                         while(/\(.*\)/s) {
 908                                 s/\([^\(\)]+\)/\{\}/gs;
 909                                 s/\(\s*\*\s*(\w+)\s*\{\}\s*\)/$1/gs;    #(*f{}) -> f
 910                         }
 911                         # pretend as we didn't use curly braces: {} -> ()
 912                         s/\{\}/\(\)/gs;
 913
 914                         s/STACK_OF\(\)/void/gs;
 915                         s/LHASH_OF\(\)/void/gs;
 916
 917                         print STDERR "DEBUG: \$_ = \"$_\"\n" if $debug;
 918                         if (/^\#INFO:([^:]*):(.*)$/) {
 919                                 $plats = $1;
 920                                 $algs = $2;
 921                                 print STDERR "DEBUG: found info on platforms ($plats) and algorithms ($algs)\n" if $debug;
 922                                 next;
 923                         } elsif (/^\s*OPENSSL_EXTERN\s.*?(\w+(\{[0-9]+\})?)(\[[0-9]*\])*\s*$/) {
 924                                 $s = $1;
 925                                 $k = "VARIABLE";
 926                                 print STDERR "DEBUG: found external variable $s\n" if $debug;
 927                         } elsif (/TYPEDEF_\w+_OF/s) {
 928                                 next;
 929                         } elsif (/(\w+)\s*\(\).*/s) {   # first token prior [first] () is
 930                                 $s = $1;                # a function name!
 931                                 print STDERR "DEBUG: found function $s\n" if $debug;
 932                         } elsif (/\(/ and not (/=/)) {
 933                                 print STDERR "File $file: cannot parse: $_;\n";
 934                                 next;
 935                         } else {
 936                                 next;
 937                         }
 938
 939                         $syms{$s} = 1;
 940                         $kind{$s} = $k;
 941
 942                         $p = $plats;
 943                         $a = $algs;
 944
 945                         $platform{$s} =
 946                             &reduce_platforms((defined($platform{$s})?$platform{$s}.',':"").$p);
 947                         $algorithm{$s} .= ','.$a;
 948
 949                         if (defined($variant{$s})) {
 950                                 foreach $v (split /;/,$variant{$s}) {
 951                                         (my $r, my $p, my $k) = split(/:/,$v);
 952                                         my $ip = join ',',map({ /^!(.*)$/ ? $1 : "!".$_ } split /,/, $p);
 953                                         $syms{$r} = 1;
 954                                         if (!defined($k)) { $k = $kind{$s}; }
 955                                         $kind{$r} = $k."(".$s.")";
 956                                         $algorithm{$r} = $algorithm{$s};
 957                                         $platform{$r} = &reduce_platforms($platform{$s}.",".$p.",".$p);
 958                                         $platform{$s} = &reduce_platforms($platform{$s}.','.$ip.','.$ip);
 959                                         print STDERR "DEBUG: \$variant{\"$s\"} = ",$v,"; \$r = $r; \$p = ",$platform{$r},"; \$a = ",$algorithm{$r},"; \$kind = ",$kind{$r},"\n" if $debug;
 960                                 }
 961                         }
 962                         print STDERR "DEBUG: \$s = $s; \$p = ",$platform{$s},"; \$a = ",$algorithm{$s},"; \$kind = ",$kind{$s},"\n" if $debug;
 963                 }
 964         }
 965
 966         # Prune the returned symbols
 967
 968         delete $syms{"bn_dump1"};
 969         $platform{"BIO_s_log"} .= ",!WIN32,!macintosh";
 970
 971         $platform{"PEM_read_NS_CERT_SEQ"} = "VMS";
 972         $platform{"PEM_write_NS_CERT_SEQ"} = "VMS";
 973         $platform{"PEM_read_P8_PRIV_KEY_INFO"} = "VMS";
 974         $platform{"PEM_write_P8_PRIV_KEY_INFO"} = "VMS";
 975
 976         # Info we know about
 977
 978         push @ret, map { $_."\\".&info_string($_,"EXIST",
 979                                               $platform{$_},
 980                                               $kind{$_},
 981                                               $algorithm{$_}) } keys %syms;
 982
 983         if (keys %unknown_algorithms) {
 984                 print STDERR "WARNING: mkdef.pl doesn't know the following algorithms:\n";
 985                 print STDERR "\t",join("\n\t",keys %unknown_algorithms),"\n";
 986         }
 987         return(@ret);
 988 }
 989
 990 # Param: string of comma-separated platform-specs.
 991 sub reduce_platforms
 992 {
 993         my ($platforms) = @_;
 994         my $pl = defined($platforms) ? $platforms : "";
 995         my %p = map { $_ => 0 } split /,/, $pl;
 996         my $ret;
 997
 998         print STDERR "DEBUG: Entered reduce_platforms with \"$platforms\"\n"
 999             if $debug;
1000         # We do this, because if there's code like the following, it really
1001         # means the function exists in all cases and should therefore be
1002         # everywhere.  By increasing and decreasing, we may attain 0:
1003         #
1004         # ifndef WIN16
1005         #    int foo();
1006         # else
1007         #    int _fat foo();
1008         # endif
1009         foreach $platform (split /,/, $pl) {
1010                 if ($platform =~ /^!(.*)$/) {
1011                         $p{$1}--;
1012                 } else {
1013                         $p{$platform}++;
1014                 }
1015         }
1016         foreach $platform (keys %p) {
1017                 if ($p{$platform} == 0) { delete $p{$platform}; }
1018         }
1019
1020         delete $p{""};
1021
1022         $ret = join(',',sort(map { $p{$_} < 0 ? "!".$_ : $_ } keys %p));
1023         print STDERR "DEBUG: Exiting reduce_platforms with \"$ret\"\n"
1024             if $debug;
1025         return $ret;
1026 }
1027
1028 sub info_string
1029 {
1030         (my $symbol, my $exist, my $platforms, my $kind, my $algorithms) = @_;
1031
1032         my %a = defined($algorithms) ?
1033             map { $_ => 1 } split /,/, $algorithms : ();
1034         my $k = defined($kind) ? $kind : "FUNCTION";
1035         my $ret;
1036         my $p = &reduce_platforms($platforms);
1037
1038         delete $a{""};
1039
1040         $ret = $exist;
1041         $ret .= ":".$p;
1042         $ret .= ":".$k;
1043         $ret .= ":".join(',',sort keys %a);
1044         return $ret;
1045 }
1046
1047 sub maybe_add_info
1048 {
1049         (my $name, *nums, my @symbols) = @_;
1050         my $sym;
1051         my $new_info = 0;
1052         my %syms=();
1053
1054         foreach $sym (@symbols) {
1055                 (my $s, my $i) = split /\\/, $sym;
1056                 if (defined($nums{$s})) {
1057                         $i =~ s/^(.*?:.*?:\w+)(\(\w+\))?/$1/;
1058                         (my $n, my $vers, my $dummy) = split /\\/, $nums{$s};
1059                         if (!defined($dummy) || $i ne $dummy) {
1060                                 $nums{$s} = $n."\\".$vers."\\".$i;
1061                                 $new_info++;
1062                                 print STDERR "DEBUG: maybe_add_info for $s: \"$dummy\" => \"$i\"\n" if $debug;
1063                         }
1064                 }
1065                 $syms{$s} = 1;
1066         }
1067
1068         my @s=sort { &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n") } keys %nums;
1069         foreach $sym (@s) {
1070                 (my $n, my $vers, my $i) = split /\\/, $nums{$sym};
1071                 if (!defined($syms{$sym}) && $i !~ /^NOEXIST:/) {
1072                         $new_info++;
1073                         print STDERR "DEBUG: maybe_add_info for $sym: -> undefined\n" if $debug;
1074                 }
1075         }
1076         if ($new_info) {
1077                 print STDERR "$name: $new_info old symbols have updated info\n";
1078                 if (!$do_rewrite) {
1079                         print STDERR "You should do a rewrite to fix this.\n";
1080                 }
1081         } else {
1082         }
1083 }
1084
1085 # Param: string of comma-separated keywords, each possibly prefixed with a "!"
1086 sub is_valid
1087 {
1088         my ($keywords_txt,$platforms) = @_;
1089         my (@keywords) = split /,/,$keywords_txt;
1090         my ($falsesum, $truesum) = (0, 1);
1091
1092         # Param: one keyword
1093         sub recognise
1094         {
1095                 my ($keyword,$platforms) = @_;
1096
1097                 if ($platforms) {
1098                         # platforms
1099                         if ($keyword eq "VMS" && $VMS) { return 1; }
1100                         if ($keyword eq "WIN32" && $W32) { return 1; }
1101                         if ($keyword eq "_WIN32" && $W32) { return 1; }
1102                         if ($keyword eq "WINNT" && $NT) { return 1; }
1103                         # Special platforms:
1104                         # EXPORT_VAR_AS_FUNCTION means that global variables
1105                         # will be represented as functions.
1106                         if ($keyword eq "EXPORT_VAR_AS_FUNCTION" && $W32) {
1107                                 return 1;
1108                         }
1109                         if ($keyword eq "ZLIB" && $zlib) { return 1; }
1110                         return 0;
1111                 } else {
1112                         # algorithms
1113                         if ($disabled_algorithms{$keyword} == 1) { return 0;}
1114
1115                         # Nothing recognise as true
1116                         return 1;
1117                 }
1118         }
1119
1120         foreach $k (@keywords) {
1121                 if ($k =~ /^!(.*)$/) {
1122                         $falsesum += &recognise($1,$platforms);
1123                 } else {
1124                         $truesum *= &recognise($k,$platforms);
1125                 }
1126         }
1127         print STDERR "DEBUG: [",$#keywords,",",$#keywords < 0,"] is_valid($keywords_txt) => (\!$falsesum) && $truesum = ",(!$falsesum) && $truesum,"\n" if $debug;
1128         return (!$falsesum) && $truesum;
1129 }
1130
1131 sub print_test_file
1132 {
1133         (*OUT,my $name,*nums,my $testall,my @symbols)=@_;
1134         my $n = 1; my @e; my @r;
1135         my $sym; my $prev = ""; my $prefSSLeay;
1136
1137         (@e)=grep(/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1138         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:.*/ && !/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1139         @symbols=((sort @e),(sort @r));
1140
1141         foreach $sym (@symbols) {
1142                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1143                 my $v = 0;
1144                 $v = 1 if $i=~ /^.*?:.*?:VARIABLE/;
1145                 my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1146                 my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1147                 if (!defined($nums{$s})) {
1148                         print STDERR "Warning: $s does not have a number assigned\n"
1149                             if(!$do_update);
1150                 } elsif (is_valid($p,1) && is_valid($a,0)) {
1151                         my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1152                         if ($prev eq $s2) {
1153                                 print OUT "\t/* The following has already appeared previously */\n";
1154                                 print STDERR "Warning: Symbol '",$s2,"' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1155                         }
1156                         $prev = $s2;    # To warn about duplicates...
1157
1158                         (my $nn, my $vers, my $ni) = split /\\/, $nums{$s2};
1159                         if ($v) {
1160                                 print OUT "\textern int $s2; /* type unknown */ /* $nn $ni */\n";
1161                         } else {
1162                                 print OUT "\textern int $s2(); /* type unknown */ /* $nn $ni */\n";
1163                         }
1164                 }
1165         }
1166 }
1167
1168 sub get_version
1169 {
1170    return $config{version};
1171 }
1172
1173 sub print_def_file
1174 {
1175         (*OUT,my $name,*nums,my @symbols)=@_;
1176         my $n = 1; my @e; my @r; my @v; my $prev="";
1177         my $liboptions="";
1178         my $libname = $name;
1179         my $http_vendor = 'www.openssl.org/';
1180         my $version = get_version();
1181         my $what = "OpenSSL: implementation of Secure Socket Layer";
1182         my $description = "$what $version, $name - http://$http_vendor";
1183         my $prevsymversion = "", $prevprevsymversion = "";
1184         # For VMS
1185         my $prevnum = 0;
1186         my $symvtextcount = 0;
1187
1188         if ($W32)
1189                 { $libname.="32"; }
1190
1191         if ($W32)
1192                 {
1193                 print OUT <<"EOF";
1194 ;
1195 ; Definition file for the DLL version of the $name library from OpenSSL
1196 ;
1197
1198 LIBRARY         $libname        $liboptions
1199
1200 EOF
1201
1202                 print "EXPORTS\n";
1203                 }
1204         elsif ($VMS)
1205                 {
1206                 print OUT <<"EOF";
1207 CASE_SENSITIVE=YES
1208 SYMBOL_VECTOR=(-
1209 EOF
1210                 $symvtextcount = 16; # length of "SYMBOL_VECTOR=(-"
1211                 }
1212
1213         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:FUNCTION/,@symbols);
1214         (@v)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:VARIABLE/,@symbols);
1215         if ($VMS) {
1216             # VMS needs to have the symbols on slot number order
1217             @symbols=(map { $_->[1] }
1218                       sort { $a->[0] <=> $b->[0] }
1219                       map { (my $s, my $i) = $_ =~ /^(.*?)\\(.*)$/;
1220                             die "Error: $s doesn't have a number assigned\n"
1221                                 if !defined($nums{$s});
1222                             (my $n, my @rest) = split /\\/, $nums{$s};
1223                             [ $n, $_ ] } (@e, @r, @v));
1224         } else {
1225             @symbols=((sort @e),(sort @r), (sort @v));
1226         }
1227
1228         my ($baseversion, $currversion) = get_openssl_version();
1229         my $thisversion;
1230         do {
1231                 if (!defined($thisversion)) {
1232                         $thisversion = $baseversion;
1233                 } else {
1234                         $thisversion = get_next_version($thisversion);
1235                 }
1236                 foreach $sym (@symbols) {
1237                         (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1238                         my $v = 0;
1239                         $v = 1 if $i =~ /^.*?:.*?:VARIABLE/;
1240                         if (!defined($nums{$s})) {
1241                                 die "Error: $s does not have a number assigned\n"
1242                                         if(!$do_update);
1243                         } else {
1244                                 (my $n, my $symversion, my $dummy) = split /\\/, $nums{$s};
1245                                 next if $symversion ne $thisversion;
1246                                 my %pf = ();
1247                                 my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1248                                 my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1249                                 if (is_valid($p,1) && is_valid($a,0)) {
1250                                         my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1251                                         if ($prev eq $s2) {
1252                                                 print STDERR "Warning: Symbol '",$s2,
1253                                                         "' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),
1254                                                         ", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1255                                         }
1256                                         $prev = $s2;    # To warn about duplicates...
1257                                         if($linux) {
1258                                                 if ($symversion ne $prevsymversion) {
1259                                                         if ($prevsymversion ne "") {
1260                                                                 if ($prevprevsymversion ne "") {
1261                                                                         print OUT "} OPENSSL_"
1262                                                                                                 ."$prevprevsymversion;\n\n";
1263                                                                 } else {
1264                                                                         print OUT "};\n\n";
1265                                                                 }
1266                                                         }
1267                                                         print OUT "OPENSSL_$symversion {\n    global:\n";
1268                                                         $prevprevsymversion = $prevsymversion;
1269                                                         $prevsymversion = $symversion;
1270                                                 }
1271                                                 print OUT "        $s2;\n";
1272                                         } elsif ($VMS) {
1273                                             while(++$prevnum < $n) {
1274                                                 my $symline=" ,SPARE -\n  ,SPARE -\n";
1275                                                 if ($symvtextcount + length($symline) - 2 > 1024) {
1276                                                     print OUT ")\nSYMBOL_VECTOR=(-\n";
1277                                                     $symvtextcount = 16; # length of "SYMBOL_VECTOR=(-"
1278                                                 }
1279                                                 if ($symvtextcount == 16) {
1280                                                     # Take away first comma
1281                                                     $symline =~ s/,//;
1282                                                 }
1283                                                 print OUT $symline;
1284                                                 $symvtextcount += length($symline) - 2;
1285                                             }
1286                                             (my $s_uc = $s) =~ tr/a-z/A-Z/;
1287                                             my $symtype=
1288                                                 $v ? "DATA" : "PROCEDURE";
1289                                             my $symline=
1290                                                 ($s_uc ne $s
1291                                                  ? " ,$s_uc/$s=$symtype -\n  ,$s=$symtype -\n"
1292                                                  : " ,$s=$symtype -\n  ,SPARE -\n");
1293                                             if ($symvtextcount + length($symline) - 2 > 1024) {
1294                                                 print OUT ")\nSYMBOL_VECTOR=(-\n";
1295                                                 $symvtextcount = 16; # length of "SYMBOL_VECTOR=(-"
1296                                             }
1297                                             if ($symvtextcount == 16) {
1298                                                 # Take away first comma
1299                                                 $symline =~ s/,//;
1300                                             }
1301                                             print OUT $symline;
1302                                             $symvtextcount += length($symline) - 2;
1303                                         } elsif($v) {
1304                                                 printf OUT "    %s%-39s DATA\n",
1305                                                                 ($W32)?"":"_",$s2;
1306                                         } else {
1307                                                 printf OUT "    %s%s\n",
1308                                                                 ($W32)?"":"_",$s2;
1309                                         }
1310                                 }
1311                         }
1312                 }
1313         } while ($thisversion ne $currversion);
1314         if ($linux) {
1315                 if ($prevprevsymversion ne "") {
1316                         print OUT "    local: *;\n} OPENSSL_$prevprevsymversion;\n\n";
1317                 } else {
1318                         print OUT "    local: *;\n};\n\n";
1319                 }
1320         } elsif ($VMS) {
1321             print OUT ")\n";
1322             (my $libvmaj, my $libvmin, my $libvedit) =
1323                 $currversion =~ /^(\d+)_(\d+)_(\d+)$/;
1324             # The reason to multiply the edit number with 100 is to make space
1325             # for the possibility that we want to encode the patch letters
1326             print OUT "GSMATCH=LEQUAL,",($libvmaj * 100 + $libvmin),",",($libvedit * 100),"\n";
1327         }
1328         printf OUT "\n";
1329 }
1330
1331 sub load_numbers
1332 {
1333         my($name)=@_;
1334         my(@a,%ret);
1335         my $prevversion;
1336
1337         $max_num = 0;
1338         $num_noinfo = 0;
1339         $prev = "";
1340         $prev_cnt = 0;
1341
1342         my ($baseversion, $currversion) = get_openssl_version();
1343
1344         open(IN,"<$name") || die "unable to open $name:$!\n";
1345         while (<IN>) {
1346                 s|\R$||;        # Better chomp
1347                 s/#.*$//;
1348                 next if /^\s*$/;
1349                 @a=split;
1350                 if (defined $ret{$a[0]}) {
1351                         # This is actually perfectly OK
1352                         #print STDERR "Warning: Symbol '",$a[0],"' redefined. old=",$ret{$a[0]},", new=",$a[1],"\n";
1353                 }
1354                 if ($max_num > $a[1]) {
1355                         print STDERR "Warning: Number decreased from ",$max_num," to ",$a[1],"\n";
1356                 }
1357                 elsif ($max_num == $a[1]) {
1358                         # This is actually perfectly OK
1359                         #print STDERR "Warning: Symbol ",$a[0]," has same number as previous ",$prev,": ",$a[1],"\n";
1360                         if ($a[0] eq $prev) {
1361                                 $prev_cnt++;
1362                                 $a[0] .= "{$prev_cnt}";
1363                         }
1364                 }
1365                 else {
1366                         $prev_cnt = 0;
1367                 }
1368                 if ($#a < 2) {
1369                         # Existence will be proven later, in do_defs
1370                         $ret{$a[0]}=$a[1];
1371                         $num_noinfo++;
1372                 } else {
1373                         #Sanity check the version number
1374                         if (defined $prevversion) {
1375                                 check_version_lte($prevversion, $a[2]);
1376                         }
1377                         check_version_lte($a[2], $currversion);
1378                         $prevversion = $a[2];
1379                         $ret{$a[0]}=$a[1]."\\".$a[2]."\\".$a[3]; # \\ is a special marker
1380                 }
1381                 $max_num = $a[1] if $a[1] > $max_num;
1382                 $prev=$a[0];
1383         }
1384         if ($num_noinfo) {
1385                 print STDERR "Warning: $num_noinfo symbols were without info.";
1386                 if ($do_rewrite) {
1387                         printf STDERR "  The rewrite will fix this.\n";
1388                 } else {
1389                         printf STDERR "  You should do a rewrite to fix this.\n";
1390                 }
1391         }
1392         close(IN);
1393         return(%ret);
1394 }
1395
1396 sub parse_number
1397 {
1398         (my $str, my $what) = @_;
1399         (my $n, my $v, my $i) = split(/\\/,$str);
1400         if ($what eq "n") {
1401                 return $n;
1402         } else {
1403                 return $i;
1404         }
1405 }
1406
1407 sub rewrite_numbers
1408 {
1409         (*OUT,$name,*nums,@symbols)=@_;
1410         my $thing;
1411
1412         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1413         my $r; my %r; my %rsyms;
1414         foreach $r (@r) {
1415                 (my $s, my $i) = split /\\/, $r;
1416                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1417                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1418                 $r{$a} = $s."\\".$i;
1419                 $rsyms{$s} = 1;
1420         }
1421
1422         my %syms = ();
1423         foreach $_ (@symbols) {
1424                 (my $n, my $i) = split /\\/;
1425                 $syms{$n} = 1;
1426         }
1427
1428         my @s=sort {
1429             &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n")
1430             || $a cmp $b
1431         } keys %nums;
1432         foreach $sym (@s) {
1433                 (my $n, my $vers, my $i) = split /\\/, $nums{$sym};
1434                 next if defined($i) && $i =~ /^.*?:.*?:\w+\(\w+\)/;
1435                 next if defined($rsyms{$sym});
1436                 print STDERR "DEBUG: rewrite_numbers for sym = ",$sym,": i = ",$i,", n = ",$n,", rsym{sym} = ",$rsyms{$sym},"syms{sym} = ",$syms{$sym},"\n" if $debug;
1437                 $i="NOEXIST::FUNCTION:"
1438                         if !defined($i) || $i eq "" || !defined($syms{$sym});
1439                 my $s2 = $sym;
1440                 $s2 =~ s/\{[0-9]+\}$//;
1441                 printf OUT "%s%-39s %d\t%s\t%s\n","",$s2,$n,$vers,$i;
1442                 if (exists $r{$sym}) {
1443                         (my $s, $i) = split /\\/,$r{$sym};
1444                         my $s2 = $s;
1445                         $s2 =~ s/\{[0-9]+\}$//;
1446                         printf OUT "%s%-39s %d\t%s\t%s\n","",$s2,$n,$vers,$i;
1447                 }
1448         }
1449 }
1450
1451 sub update_numbers
1452 {
1453         (*OUT,$name,*nums,my $start_num, my @symbols)=@_;
1454         my $new_syms = 0;
1455         my $basevers;
1456         my $vers;
1457
1458         ($basevers, $vers) = get_openssl_version();
1459
1460         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1461         my $r; my %r; my %rsyms;
1462         foreach $r (@r) {
1463                 (my $s, my $i) = split /\\/, $r;
1464                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1465                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1466                 $r{$a} = $s."\\".$i;
1467                 $rsyms{$s} = 1;
1468         }
1469
1470         foreach $sym (@symbols) {
1471                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1472                 next if $i =~ /^.*?:.*?:\w+\(\w+\)/;
1473                 next if defined($rsyms{$sym});
1474                 die "ERROR: Symbol $sym had no info attached to it."
1475                     if $i eq "";
1476                 if (!exists $nums{$s}) {
1477                         $new_syms++;
1478                         my $s2 = $s;
1479                         $s2 =~ s/\{[0-9]+\}$//;
1480                         printf OUT "%s%-39s %d\t%s\t%s\n","",$s2, ++$start_num,$vers,$i;
1481                         if (exists $r{$s}) {
1482                                 ($s, $i) = split /\\/,$r{$s};
1483                                 $s =~ s/\{[0-9]+\}$//;
1484                                 printf OUT "%s%-39s %d\t%s\t%s\n","",$s, $start_num,$vers,$i;
1485                         }
1486                 }
1487         }
1488         if($new_syms) {
1489                 print STDERR "$name: Added $new_syms new symbols\n";
1490         } else {
1491                 print STDERR "$name: No new symbols added\n";
1492         }
1493 }
1494
1495 sub check_existing
1496 {
1497         (*nums, my @symbols)=@_;
1498         my %existing; my @remaining;
1499         @remaining=();
1500         foreach $sym (@symbols) {
1501                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1502                 $existing{$s}=1;
1503         }
1504         foreach $sym (keys %nums) {
1505                 if (!exists $existing{$sym}) {
1506                         push @remaining, $sym;
1507                 }
1508         }
1509         if(@remaining) {
1510                 print STDERR "The following symbols do not seem to exist:\n";
1511                 foreach $sym (@remaining) {
1512                         print STDERR "\t",$sym,"\n";
1513                 }
1514         }
1515 }
1516
1517 sub count_parens
1518 {
1519         my $line = shift(@_);
1520
1521         my $open = $line =~ tr/\(//;
1522         my $close = $line =~ tr/\)//;
1523
1524         return $open - $close;
1525 }
1526
1527 #Parse opensslv.h to get the current version number. Also work out the base
1528 #version, i.e. the lowest version number that is binary compatible with this
1529 #version
1530 sub get_openssl_version()
1531 {
1532         my $fn = catfile($config{sourcedir},"include","openssl","opensslv.h");
1533         open (IN, "$fn") || die "Can't open opensslv.h";
1534
1535         while(<IN>) {
1536                 if (/OPENSSL_VERSION_TEXT\s+"OpenSSL (\d\.\d\.)(\d[a-z]*)(-| )/) {
1537                         my $suffix = $2;
1538                         (my $baseversion = $1) =~ s/\./_/g;
1539                         close IN;
1540                         return ($baseversion."0", $baseversion.$suffix);
1541                 }
1542         }
1543         die "Can't find OpenSSL version number\n";
1544 }
1545
1546 #Given an OpenSSL version number, calculate the next version number. If the
1547 #version number gets to a.b.czz then we go to a.b.(c+1)
1548 sub get_next_version()
1549 {
1550         my $thisversion = shift;
1551
1552         my ($base, $letter) = $thisversion =~ /^(\d_\d_\d)([a-z]{0,2})$/;
1553
1554         if ($letter eq "zz") {
1555                 my $lastnum = substr($base, -1);
1556                 return substr($base, 0, length($base)-1).(++$lastnum);
1557         }
1558         return $base.get_next_letter($letter);
1559 }
1560
1561 #Given the letters off the end of an OpenSSL version string, calculate what
1562 #the letters for the next release would be.
1563 sub get_next_letter()
1564 {
1565         my $thisletter = shift;
1566         my $baseletter = "";
1567         my $endletter;
1568
1569         if ($thisletter eq "") {
1570                 return "a";
1571         }
1572         if ((length $thisletter) > 1) {
1573                 ($baseletter, $endletter) = $thisletter =~ /([a-z]+)([a-z])/;
1574         } else {
1575                 $endletter = $thisletter;
1576         }
1577
1578         if ($endletter eq "z") {
1579                 return $thisletter."a";
1580         } else {
1581                 return $baseletter.(++$endletter);
1582         }
1583 }
1584
1585 #Check if a version is less than or equal to the current version. Its a fatal
1586 #error if not. They must also only differ in letters, or the last number (i.e.
1587 #the first two numbers must be the same)
1588 sub check_version_lte()
1589 {
1590         my ($testversion, $currversion) = @_;
1591         my $lentv;
1592         my $lencv;
1593         my $cvbase;
1594
1595         my ($cvnums) = $currversion =~ /^(\d_\d_\d)[a-z]*$/;
1596         my ($tvnums) = $testversion =~ /^(\d_\d_\d)[a-z]*$/;
1597
1598         #Die if we can't parse the version numbers or they don't look sane
1599         die "Invalid version number: $testversion and $currversion\n"
1600                 if (!defined($cvnums) || !defined($tvnums)
1601                         || length($cvnums) != 5
1602                         || length($tvnums) != 5);
1603
1604         #If the base versions (without letters) don't match check they only differ
1605         #in the last number
1606         if ($cvnums ne $tvnums) {
1607                 die "Invalid version number: $testversion "
1608                         ."for current version $currversion\n"
1609                         if (substr($cvnums, 0, 4) ne substr($tvnums, 0, 4));
1610                 return;
1611         }
1612         #If we get here then the base version (i.e. the numbers) are the same - they
1613         #only differ in the letters
1614
1615         $lentv = length $testversion;
1616         $lencv = length $currversion;
1617
1618         #If the testversion has more letters than the current version then it must
1619         #be later (or malformed)
1620         if ($lentv > $lencv) {
1621                 die "Invalid version number: $testversion "
1622                         ."is greater than $currversion\n";
1623         }
1624
1625         #Get the last letter from the current version
1626         my ($cvletter) = $currversion =~ /([a-z])$/;
1627         if (defined $cvletter) {
1628                 ($cvbase) = $currversion =~ /(\d_\d_\d[a-z]*)$cvletter$/;
1629         } else {
1630                 $cvbase = $currversion;
1631         }
1632         die "Unable to parse version number $currversion" if (!defined $cvbase);
1633         my $tvbase;
1634         my ($tvletter) = $testversion =~ /([a-z])$/;
1635         if (defined $tvletter) {
1636                 ($tvbase) = $testversion =~ /(\d_\d_\d[a-z]*)$tvletter$/;
1637         } else {
1638                 $tvbase = $testversion;
1639         }
1640         die "Unable to parse version number $testversion" if (!defined $tvbase);
1641
1642         if ($lencv > $lentv) {
1643                 #If current version has more letters than testversion then testversion
1644                 #minus the final letter must be a substring of the current version
1645                 die "Invalid version number $testversion "
1646                         ."is greater than $currversion or is invalid\n"
1647                         if (index($cvbase, $tvbase) != 0);
1648         } else {
1649                 #If both versions have the same number of letters then they must be
1650                 #equal up to the last letter, and the last letter in testversion must
1651                 #be less than or equal to the last letter in current version.
1652                 die "Invalid version number $testversion "
1653                         ."is greater than $currversion\n"
1654                         if (($cvbase ne $tvbase) && ($tvletter gt $cvletter));
1655         }
1656 }
1657
1658 sub do_deprecated()
1659 {
1660         my ($decl, $plats, $algs) = @_;
1661         $decl =~ /^\s*(DEPRECATEDIN_\d+_\d+_\d+)\s*\((.*)\)\s*$/
1662             or die "Bad DEPRECTEDIN: $decl\n";
1663         my $info1 .= "#INFO:";
1664         $info1 .= join(',', @{$plats}) . ":";
1665         my $info2 = $info1;
1666         $info1 .= join(',',@{$algs}, $1) . ";";
1667         $info2 .= join(',',@{$algs}) . ";";
1668         return $info1 . $2 . ";" . $info2;
1669 }