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 $VMSVAX=0;
  67 my $VMSNonVAX=0;
  68 my $VMS=0;
  69 my $W32=0;
  70 my $NT=0;
  71 my $linux=0;
  72 # Set this to make typesafe STACK definitions appear in DEF
  73 my $safe_stack_def = 0;
  74
  75 my @known_platforms = ( "__FreeBSD__", "PERL5",
  76                         "EXPORT_VAR_AS_FUNCTION", "ZLIB", "_WIN32"
  77                         );
  78 my @known_ossl_platforms = ( "VMS", "WIN32", "WINNT", "OS2" );
  79 my @known_algorithms = ( "RC2", "RC4", "RC5", "IDEA", "DES", "BF",
  80                          "CAST", "MD2", "MD4", "MD5", "SHA", "SHA0", "SHA1",
  81                          "SHA256", "SHA512", "RMD160",
  82                          "MDC2", "WHIRLPOOL", "RSA", "DSA", "DH", "EC", "EC2M",
  83                          "HMAC", "AES", "CAMELLIA", "SEED", "GOST", "ARIA",
  84                          "SCRYPT", "CHACHA", "POLY1305", "BLAKE2",
  85                          "SIPHASH",
  86                          # EC_NISTP_64_GCC_128
  87                          "EC_NISTP_64_GCC_128",
  88                          # Envelope "algorithms"
  89                          "EVP", "X509", "ASN1_TYPEDEFS",
  90                          # Helper "algorithms"
  91                          "BIO", "COMP", "BUFFER", "LHASH", "STACK", "ERR",
  92                          "LOCKING",
  93                          # External "algorithms"
  94                          "FP_API", "STDIO", "SOCK", "DGRAM",
  95                          "CRYPTO_MDEBUG",
  96                          # Engines
  97                          "STATIC_ENGINE", "ENGINE", "HW", "GMP",
  98                          # Entropy Gathering
  99                          "EGD",
 100                          # Certificate Transparency
 101                          "CT",
 102                          # RFC3779
 103                          "RFC3779",
 104                          # TLS
 105                          "PSK", "SRP", "HEARTBEATS",
 106                          # CMS
 107                          "CMS",
 108                          "OCSP",
 109                          # CryptoAPI Engine
 110                          "CAPIENG",
 111                          # SSL methods
 112                          "SSL3_METHOD", "TLS1_METHOD", "TLS1_1_METHOD", "TLS1_2_METHOD", "DTLS1_METHOD", "DTLS1_2_METHOD",
 113                          # NEXTPROTONEG
 114                          "NEXTPROTONEG",
 115                          # Deprecated functions
 116                          "DEPRECATEDIN_0_9_8",
 117                          "DEPRECATEDIN_1_0_0",
 118                          "DEPRECATEDIN_1_1_0",
 119                          # SCTP
 120                          "SCTP",
 121                          # SRTP
 122                          "SRTP",
 123                          # SSL TRACE
 124                          "SSL_TRACE",
 125                          # Unit testing
 126                          "UNIT_TEST",
 127                          # User Interface
 128                          "UI",
 129                          #
 130                          "TS",
 131                          # OCB mode
 132                          "OCB",
 133                          "CMAC",
 134                          # APPLINK (win build feature?)
 135                          "APPLINK"
 136                      );
 137
 138 my %disabled_algorithms;
 139
 140 foreach (@known_algorithms) {
 141     $disabled_algorithms{$_} = 0;
 142 }
 143 # disabled by default
 144 $disabled_algorithms{"STATIC_ENGINE"} = 1;
 145
 146 my $zlib;
 147
 148 foreach (@ARGV, split(/ /, $config{options}))
 149         {
 150         $debug=1 if $_ eq "debug";
 151         $W32=1 if $_ eq "32";
 152         die "win16 not supported" if $_ eq "16";
 153         if($_ eq "NT") {
 154                 $W32 = 1;
 155                 $NT = 1;
 156         }
 157         if ($_ eq "VMS-VAX") {
 158                 $VMS=1;
 159                 $VMSVAX=1;
 160         }
 161         if ($_ eq "VMS-NonVAX") {
 162                 $VMS=1;
 163                 $VMSNonVAX=1;
 164         }
 165         if ($_ eq "linux") {
 166                 $linux=1;
 167         }
 168         $VMS=$VMSNonVAX=1 if $_ eq "VMS";
 169         if ($_ eq "zlib" || $_ eq "enable-zlib" || $_ eq "zlib-dynamic"
 170                          || $_ eq "enable-zlib-dynamic") {
 171                 $zlib = 1;
 172         }
 173
 174         $do_ssl=1 if $_ eq "libssl";
 175         if ($_ eq "ssl") {
 176                 $do_ssl=1;
 177                 $libname=$_
 178         }
 179         $do_crypto=1 if $_ eq "libcrypto";
 180         if ($_ eq "crypto") {
 181                 $do_crypto=1;
 182                 $libname=$_;
 183         }
 184         $do_update=1 if $_ eq "update";
 185         $do_rewrite=1 if $_ eq "rewrite";
 186         $do_ctest=1 if $_ eq "ctest";
 187         $do_ctestall=1 if $_ eq "ctestall";
 188         $do_checkexist=1 if $_ eq "exist";
 189         if (/^--api=(\d+)\.(\d+)\.(\d+)$/) {
 190                 my $apiv = sprintf "%x%02x%02x", $1, $2, $3;
 191                 foreach (keys %disabled_algorithms) {
 192                         if (/^DEPRECATEDIN_(\d+)_(\d+)_(\d+)$/) {
 193                                 my $depv = sprintf "%x%02x%02x", $1, $2, $3;
 194                                 $disabled_algorithms{$_} = 1 if $apiv ge $depv;
 195                         }
 196                 }
 197         }
 198         if (/^no-deprecated$/) {
 199                 foreach (keys %disabled_algorithms) {
 200                         if (/^DEPRECATEDIN_/) {
 201                                 $disabled_algorithms{$_} = 1;
 202                         }
 203                 }
 204         }
 205         elsif (/^(enable|disable|no)-(.*)$/) {
 206                 my $alg = uc $2;
 207         $alg =~ tr/-/_/;
 208                 if (exists $disabled_algorithms{$alg}) {
 209                         $disabled_algorithms{$alg} = $1 eq "enable" ? 0 : 1;
 210                 }
 211         }
 212
 213         }
 214
 215 if (!$libname) {
 216         if ($do_ssl) {
 217                 $libname="LIBSSL";
 218         }
 219         if ($do_crypto) {
 220                 $libname="LIBCRYPTO";
 221         }
 222 }
 223
 224 # If no platform is given, assume WIN32
 225 if ($W32 + $VMS + $linux == 0) {
 226         $W32 = 1;
 227 }
 228 die "Please, only one platform at a time"
 229     if ($W32 + $VMS + $linux > 1);
 230
 231 if (!$do_ssl && !$do_crypto)
 232         {
 233         print STDERR "usage: $0 ( ssl | crypto ) [ 16 | 32 | NT | OS2 | linux | VMS ]\n";
 234         exit(1);
 235         }
 236
 237 %ssl_list=&load_numbers($ssl_num);
 238 $max_ssl = $max_num;
 239 %crypto_list=&load_numbers($crypto_num);
 240 $max_crypto = $max_num;
 241
 242 my $ssl="include/openssl/ssl.h";
 243 $ssl.=" include/openssl/tls1.h";
 244 $ssl.=" include/openssl/srtp.h";
 245
 246 # We use headers found in include/openssl and include/internal only.
 247 # The latter is needed so libssl.so/.dll/.exe can link properly.
 248 my $crypto ="include/openssl/crypto.h";
 249 $crypto.=" include/internal/o_dir.h";
 250 $crypto.=" include/internal/o_str.h";
 251 $crypto.=" include/internal/err.h";
 252 $crypto.=" include/openssl/des.h" ; # unless $no_des;
 253 $crypto.=" include/openssl/idea.h" ; # unless $no_idea;
 254 $crypto.=" include/openssl/rc4.h" ; # unless $no_rc4;
 255 $crypto.=" include/openssl/rc5.h" ; # unless $no_rc5;
 256 $crypto.=" include/openssl/rc2.h" ; # unless $no_rc2;
 257 $crypto.=" include/openssl/blowfish.h" ; # unless $no_bf;
 258 $crypto.=" include/openssl/cast.h" ; # unless $no_cast;
 259 $crypto.=" include/openssl/whrlpool.h" ;
 260 $crypto.=" include/openssl/md2.h" ; # unless $no_md2;
 261 $crypto.=" include/openssl/md4.h" ; # unless $no_md4;
 262 $crypto.=" include/openssl/md5.h" ; # unless $no_md5;
 263 $crypto.=" include/openssl/mdc2.h" ; # unless $no_mdc2;
 264 $crypto.=" include/openssl/sha.h" ; # unless $no_sha;
 265 $crypto.=" include/openssl/ripemd.h" ; # unless $no_ripemd;
 266 $crypto.=" include/openssl/aes.h" ; # unless $no_aes;
 267 $crypto.=" include/openssl/camellia.h" ; # unless $no_camellia;
 268 $crypto.=" include/openssl/seed.h"; # unless $no_seed;
 269
 270 $crypto.=" include/openssl/bn.h";
 271 $crypto.=" include/openssl/rsa.h" ; # unless $no_rsa;
 272 $crypto.=" include/openssl/dsa.h" ; # unless $no_dsa;
 273 $crypto.=" include/openssl/dh.h" ; # unless $no_dh;
 274 $crypto.=" include/openssl/ec.h" ; # unless $no_ec;
 275 $crypto.=" include/openssl/hmac.h" ; # unless $no_hmac;
 276 $crypto.=" include/openssl/cmac.h" ;
 277
 278 $crypto.=" include/openssl/engine.h"; # unless $no_engine;
 279 $crypto.=" include/openssl/stack.h" ; # unless $no_stack;
 280 $crypto.=" include/openssl/buffer.h" ; # unless $no_buffer;
 281 $crypto.=" include/openssl/bio.h" ; # unless $no_bio;
 282 $crypto.=" include/internal/dso.h" ; # unless $no_dso;
 283 $crypto.=" include/openssl/lhash.h" ; # unless $no_lhash;
 284 $crypto.=" include/openssl/conf.h";
 285 $crypto.=" include/openssl/txt_db.h";
 286
 287 $crypto.=" include/openssl/evp.h" ; # unless $no_evp;
 288 $crypto.=" include/openssl/objects.h";
 289 $crypto.=" include/openssl/pem.h";
 290 #$crypto.=" include/openssl/meth.h";
 291 $crypto.=" include/openssl/asn1.h";
 292 $crypto.=" include/openssl/asn1t.h";
 293 $crypto.=" include/openssl/err.h" ; # unless $no_err;
 294 $crypto.=" include/openssl/pkcs7.h";
 295 $crypto.=" include/openssl/pkcs12.h";
 296 $crypto.=" include/openssl/x509.h";
 297 $crypto.=" include/openssl/x509_vfy.h";
 298 $crypto.=" include/openssl/x509v3.h";
 299 $crypto.=" include/openssl/ts.h";
 300 $crypto.=" include/openssl/rand.h";
 301 $crypto.=" include/openssl/comp.h" ; # unless $no_comp;
 302 $crypto.=" include/openssl/ocsp.h";
 303 $crypto.=" include/openssl/ui.h";
 304 #$crypto.=" include/openssl/store.h";
 305 $crypto.=" include/openssl/cms.h";
 306 $crypto.=" include/openssl/srp.h";
 307 $crypto.=" include/openssl/modes.h";
 308 $crypto.=" include/openssl/async.h";
 309 $crypto.=" include/openssl/ct.h";
 310 $crypto.=" include/openssl/kdf.h";
 311
 312 my $symhacks="include/openssl/symhacks.h";
 313
 314 my @ssl_symbols = &do_defs("LIBSSL", $ssl, $symhacks);
 315 my @crypto_symbols = &do_defs("LIBCRYPTO", $crypto, $symhacks);
 316
 317 if ($do_update) {
 318
 319 if ($do_ssl == 1) {
 320
 321         &maybe_add_info("LIBSSL",*ssl_list,@ssl_symbols);
 322         if ($do_rewrite == 1) {
 323                 open(OUT, ">$ssl_num");
 324                 &rewrite_numbers(*OUT,"LIBSSL",*ssl_list,@ssl_symbols);
 325         } else {
 326                 open(OUT, ">>$ssl_num");
 327         }
 328         &update_numbers(*OUT,"LIBSSL",*ssl_list,$max_ssl,@ssl_symbols);
 329         close OUT;
 330 }
 331
 332 if($do_crypto == 1) {
 333
 334         &maybe_add_info("LIBCRYPTO",*crypto_list,@crypto_symbols);
 335         if ($do_rewrite == 1) {
 336                 open(OUT, ">$crypto_num");
 337                 &rewrite_numbers(*OUT,"LIBCRYPTO",*crypto_list,@crypto_symbols);
 338         } else {
 339                 open(OUT, ">>$crypto_num");
 340         }
 341         &update_numbers(*OUT,"LIBCRYPTO",*crypto_list,$max_crypto,@crypto_symbols);
 342         close OUT;
 343 }
 344
 345 } elsif ($do_checkexist) {
 346         &check_existing(*ssl_list, @ssl_symbols)
 347                 if $do_ssl == 1;
 348         &check_existing(*crypto_list, @crypto_symbols)
 349                 if $do_crypto == 1;
 350 } elsif ($do_ctest || $do_ctestall) {
 351
 352         print <<"EOF";
 353
 354 /* Test file to check all DEF file symbols are present by trying
 355  * to link to all of them. This is *not* intended to be run!
 356  */
 357
 358 int main()
 359 {
 360 EOF
 361         &print_test_file(*STDOUT,"LIBSSL",*ssl_list,$do_ctestall,@ssl_symbols)
 362                 if $do_ssl == 1;
 363
 364         &print_test_file(*STDOUT,"LIBCRYPTO",*crypto_list,$do_ctestall,@crypto_symbols)
 365                 if $do_crypto == 1;
 366
 367         print "}\n";
 368
 369 } else {
 370
 371         &print_def_file(*STDOUT,$libname,*ssl_list,@ssl_symbols)
 372                 if $do_ssl == 1;
 373
 374         &print_def_file(*STDOUT,$libname,*crypto_list,@crypto_symbols)
 375                 if $do_crypto == 1;
 376
 377 }
 378
 379
 380 sub do_defs
 381 {
 382         my($name,$files,$symhacksfile)=@_;
 383         my $file;
 384         my @ret;
 385         my %syms;
 386         my %platform;           # For anything undefined, we assume ""
 387         my %kind;               # For anything undefined, we assume "FUNCTION"
 388         my %algorithm;          # For anything undefined, we assume ""
 389         my %variant;
 390         my %variant_cnt;        # To be able to allocate "name{n}" if "name"
 391                                 # is the same name as the original.
 392         my $cpp;
 393         my %unknown_algorithms = ();
 394         my $parens = 0;
 395
 396         foreach $file (split(/\s+/,$symhacksfile." ".$files))
 397                 {
 398                 my $fn = catfile($config{sourcedir},$file);
 399                 print STDERR "DEBUG: starting on $fn:\n" if $debug;
 400                 open(IN,"<$fn") || die "unable to open $fn:$!\n";
 401                 my $line = "", my $def= "";
 402                 my %tag = (
 403                         (map { $_ => 0 } @known_platforms),
 404                         (map { "OPENSSL_SYS_".$_ => 0 } @known_ossl_platforms),
 405                         (map { "OPENSSL_NO_".$_ => 0 } @known_algorithms),
 406                         (map { "OPENSSL_USE_".$_ => 0 } @known_algorithms),
 407                         NOPROTO         => 0,
 408                         PERL5           => 0,
 409                         _WINDLL         => 0,
 410                         CONST_STRICT    => 0,
 411                         TRUE            => 1,
 412                 );
 413                 my $symhacking = $file eq $symhacksfile;
 414                 my @current_platforms = ();
 415                 my @current_algorithms = ();
 416
 417                 # params: symbol, alias, platforms, kind
 418                 # The reason to put this subroutine in a variable is that
 419                 # it will otherwise create it's own, unshared, version of
 420                 # %tag and %variant...
 421                 my $make_variant = sub
 422                 {
 423                         my ($s, $a, $p, $k) = @_;
 424                         my ($a1, $a2);
 425
 426                         print STDERR "DEBUG: make_variant: Entered with ",$s,", ",$a,", ",(defined($p)?$p:""),", ",(defined($k)?$k:""),"\n" if $debug;
 427                         if (defined($p))
 428                         {
 429                                 $a1 = join(",",$p,
 430                                            grep(!/^$/,
 431                                                 map { $tag{$_} == 1 ? $_ : "" }
 432                                                 @known_platforms));
 433                         }
 434                         else
 435                         {
 436                                 $a1 = join(",",
 437                                            grep(!/^$/,
 438                                                 map { $tag{$_} == 1 ? $_ : "" }
 439                                                 @known_platforms));
 440                         }
 441                         $a2 = join(",",
 442                                    grep(!/^$/,
 443                                         map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ : "" }
 444                                         @known_ossl_platforms));
 445                         print STDERR "DEBUG: make_variant: a1 = $a1; a2 = $a2\n" if $debug;
 446                         if ($a1 eq "") { $a1 = $a2; }
 447                         elsif ($a1 ne "" && $a2 ne "") { $a1 .= ",".$a2; }
 448                         if ($a eq $s)
 449                         {
 450                                 if (!defined($variant_cnt{$s}))
 451                                 {
 452                                         $variant_cnt{$s} = 0;
 453                                 }
 454                                 $variant_cnt{$s}++;
 455                                 $a .= "{$variant_cnt{$s}}";
 456                         }
 457                         my $toadd = $a.":".$a1.(defined($k)?":".$k:"");
 458                         my $togrep = $s.'(\{[0-9]+\})?:'.$a1.(defined($k)?":".$k:"");
 459                         if (!grep(/^$togrep$/,
 460                                   split(/;/, defined($variant{$s})?$variant{$s}:""))) {
 461                                 if (defined($variant{$s})) { $variant{$s} .= ";"; }
 462                                 $variant{$s} .= $toadd;
 463                         }
 464                         print STDERR "DEBUG: make_variant: Exit with variant of ",$s," = ",$variant{$s},"\n" if $debug;
 465                 };
 466
 467                 print STDERR "DEBUG: parsing ----------\n" if $debug;
 468                 while(<IN>) {
 469                         if($parens > 0) {
 470                                 #Inside a DEPRECATEDIN
 471                                 $stored_multiline .= $_;
 472                                 $stored_multiline =~ s|\R$||; # Better chomp
 473                                 print STDERR "DEBUG: Continuing multiline DEPRECATEDIN: $stored_multiline\n" if $debug;
 474                                 $parens = count_parens($stored_multiline);
 475                                 if ($parens == 0) {
 476                                         $def .= do_deprecated($stored_multiline,
 477                                                         \@current_platforms,
 478                                                         \@current_algorithms);
 479                                 }
 480                                 next;
 481                         }
 482                         if (/\/\* Error codes for the \w+ functions\. \*\//)
 483                                 {
 484                                 undef @tag;
 485                                 last;
 486                                 }
 487                         if ($line ne '') {
 488                                 $_ = $line . $_;
 489                                 $line = '';
 490                         }
 491
 492                         if (/\\$/) {
 493                                 $line = $`; # keep what was before the backslash
 494                                 next;
 495                         }
 496
 497                         if(/\/\*/) {
 498                                 if (not /\*\//) {       # multiline comment...
 499                                         $line = $_;     # ... just accumulate
 500                                         next;
 501                                 } else {
 502                                         s/\/\*.*?\*\///gs;# wipe it
 503                                 }
 504                         }
 505
 506                         if ($cpp) {
 507                                 $cpp++ if /^#\s*if/;
 508                                 $cpp-- if /^#\s*endif/;
 509                                 next;
 510                         }
 511                         if (/^#.*ifdef.*cplusplus/) {
 512                                 $cpp = 1;
 513                                 next;
 514                         }
 515
 516                         s/{[^{}]*}//gs;                      # ignore {} blocks
 517                         print STDERR "DEBUG: \$def=\"$def\"\n" if $debug && $def ne "";
 518                         print STDERR "DEBUG: \$_=\"$_\"\n" if $debug;
 519                         if (/^\#\s*ifndef\s+(.*)/) {
 520                                 push(@tag,"-");
 521                                 push(@tag,$1);
 522                                 $tag{$1}=-1;
 523                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
 524                         } elsif (/^\#\s*if\s+!defined\(([^\)]+)\)/) {
 525                                 push(@tag,"-");
 526                                 if (/^\#\s*if\s+(!defined\(([^\)]+)\)(\s+\&\&\s+!defined\(([^\)]+)\))*)$/) {
 527                                         my $tmp_1 = $1;
 528                                         my $tmp_;
 529                                         foreach $tmp_ (split '\&\&',$tmp_1) {
 530                                                 $tmp_ =~ /!defined\(([^\)]+)\)/;
 531                                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
 532                                                 push(@tag,$1);
 533                                                 $tag{$1}=-1;
 534                                         }
 535                                 } else {
 536                                         print STDERR "Warning: $file: complicated expression: $_" if $debug; # because it is O...
 537                                         print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
 538                                         push(@tag,$1);
 539                                         $tag{$1}=-1;
 540                                 }
 541                         } elsif (/^\#\s*ifdef\s+(\S*)/) {
 542                                 push(@tag,"-");
 543                                 push(@tag,$1);
 544                                 $tag{$1}=1;
 545                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
 546                         } elsif (/^\#\s*if\s+defined\(([^\)]+)\)/) {
 547                                 push(@tag,"-");
 548                                 if (/^\#\s*if\s+(defined\(([^\)]+)\)(\s+\|\|\s+defined\(([^\)]+)\))*)$/) {
 549                                         my $tmp_1 = $1;
 550                                         my $tmp_;
 551                                         foreach $tmp_ (split '\|\|',$tmp_1) {
 552                                                 $tmp_ =~ /defined\(([^\)]+)\)/;
 553                                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
 554                                                 push(@tag,$1);
 555                                                 $tag{$1}=1;
 556                                         }
 557                                 } else {
 558                                         print STDERR "Warning: $file: complicated expression: $_\n" if $debug; # because it is O...
 559                                         print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
 560                                         push(@tag,$1);
 561                                         $tag{$1}=1;
 562                                 }
 563                         } elsif (/^\#\s*error\s+(\w+) is disabled\./) {
 564                                 my $tag_i = $#tag;
 565                                 while($tag[$tag_i] ne "-") {
 566                                         if ($tag[$tag_i] eq "OPENSSL_NO_".$1) {
 567                                                 $tag{$tag[$tag_i]}=2;
 568                                                 print STDERR "DEBUG: $file: chaged tag $1 = 2\n" if $debug;
 569                                         }
 570                                         $tag_i--;
 571                                 }
 572                         } elsif (/^\#\s*endif/) {
 573                                 my $tag_i = $#tag;
 574                                 while($tag_i > 0 && $tag[$tag_i] ne "-") {
 575                                         my $t=$tag[$tag_i];
 576                                         print STDERR "DEBUG: \$t=\"$t\"\n" if $debug;
 577                                         if ($tag{$t}==2) {
 578                                                 $tag{$t}=-1;
 579                                         } else {
 580                                                 $tag{$t}=0;
 581                                         }
 582                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
 583                                         pop(@tag);
 584                                         if ($t =~ /^OPENSSL_NO_([A-Z0-9_]+)$/) {
 585                                                 $t=$1;
 586                                         } elsif($t =~ /^OPENSSL_USE_([A-Z0-9_]+)$/) {
 587                                                 $t=$1;
 588                                         } else {
 589                                                 $t="";
 590                                         }
 591                                         if ($t ne ""
 592                                             && !grep(/^$t$/, @known_algorithms)) {
 593                                                 $unknown_algorithms{$t} = 1;
 594                                                 #print STDERR "DEBUG: Added as unknown algorithm: $t\n" if $debug;
 595                                         }
 596                                         $tag_i--;
 597                                 }
 598                                 pop(@tag);
 599                         } elsif (/^\#\s*else/) {
 600                                 my $tag_i = $#tag;
 601                                 die "$file unmatched else\n" if $tag_i < 0;
 602                                 while($tag[$tag_i] ne "-") {
 603                                         my $t=$tag[$tag_i];
 604                                         $tag{$t}= -$tag{$t};
 605                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
 606                                         $tag_i--;
 607                                 }
 608                         } elsif (/^\#\s*if\s+1/) {
 609                                 push(@tag,"-");
 610                                 # Dummy tag
 611                                 push(@tag,"TRUE");
 612                                 $tag{"TRUE"}=1;
 613                                 print STDERR "DEBUG: $file: found 1\n" if $debug;
 614                         } elsif (/^\#\s*if\s+0/) {
 615                                 push(@tag,"-");
 616                                 # Dummy tag
 617                                 push(@tag,"TRUE");
 618                                 $tag{"TRUE"}=-1;
 619                                 print STDERR "DEBUG: $file: found 0\n" if $debug;
 620                         } elsif (/^\#\s*if\s+/) {
 621                                 #Some other unrecognized "if" style
 622                                 push(@tag,"-");
 623                         } elsif (/^\#\s*define\s+(\w+)\s+(\w+)/
 624                                  && $symhacking && $tag{'TRUE'} != -1) {
 625                                 # This is for aliasing.  When we find an alias,
 626                                 # we have to invert
 627                                 &$make_variant($1,$2);
 628                                 print STDERR "DEBUG: $file: defined $1 = $2\n" if $debug;
 629                         }
 630                         if (/^\#/) {
 631                                 @current_platforms =
 632                                     grep(!/^$/,
 633                                          map { $tag{$_} == 1 ? $_ :
 634                                                    $tag{$_} == -1 ? "!".$_  : "" }
 635                                          @known_platforms);
 636                                 push @current_platforms
 637                                     , grep(!/^$/,
 638                                            map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ :
 639                                                      $tag{"OPENSSL_SYS_".$_} == -1 ? "!".$_  : "" }
 640                                            @known_ossl_platforms);
 641                                 @current_algorithms = ();
 642                                 @current_algorithms =
 643                                     grep(!/^$/,
 644                                          map { $tag{"OPENSSL_NO_".$_} == -1 ? $_ : "" }
 645                                          @known_algorithms);
 646                                 push @current_algorithms
 647                                     , grep(!/^$/,
 648                                          map { $tag{"OPENSSL_USE_".$_} == 1 ? $_ : "" }
 649                                          @known_algorithms);
 650                                 $def .=
 651                                     "#INFO:"
 652                                         .join(',',@current_platforms).":"
 653                                             .join(',',@current_algorithms).";";
 654                                 next;
 655                         }
 656                         if ($tag{'TRUE'} != -1) {
 657                                 if (/^\s*DEFINE_STACK_OF\s*\(\s*(\w*)\s*\)/
 658                                                 || /^\s*DEFINE_STACK_OF_CONST\s*\(\s*(\w*)\s*\)/) {
 659                                         next;
 660                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 661                                         $def .= "int d2i_$3(void);";
 662                                         $def .= "int i2d_$3(void);";
 663                                         # Variant for platforms that do not
 664                                         # have to access globale variables
 665                                         # in shared libraries through functions
 666                                         $def .=
 667                                             "#INFO:"
 668                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 669                                                     .join(',',@current_algorithms).";";
 670                                         $def .= "OPENSSL_EXTERN int $2_it;";
 671                                         $def .=
 672                                             "#INFO:"
 673                                                 .join(',',@current_platforms).":"
 674                                                     .join(',',@current_algorithms).";";
 675                                         # Variant for platforms that have to
 676                                         # access globale variables in shared
 677                                         # libraries through functions
 678                                         &$make_variant("$2_it","$2_it",
 679                                                       "EXPORT_VAR_AS_FUNCTION",
 680                                                       "FUNCTION");
 681                                         next;
 682                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_fname\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 683                                         $def .= "int d2i_$3(void);";
 684                                         $def .= "int i2d_$3(void);";
 685                                         $def .= "int $3_free(void);";
 686                                         $def .= "int $3_new(void);";
 687                                         # Variant for platforms that do not
 688                                         # have to access globale variables
 689                                         # in shared libraries through functions
 690                                         $def .=
 691                                             "#INFO:"
 692                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 693                                                     .join(',',@current_algorithms).";";
 694                                         $def .= "OPENSSL_EXTERN int $2_it;";
 695                                         $def .=
 696                                             "#INFO:"
 697                                                 .join(',',@current_platforms).":"
 698                                                     .join(',',@current_algorithms).";";
 699                                         # Variant for platforms that have to
 700                                         # access globale variables in shared
 701                                         # libraries through functions
 702                                         &$make_variant("$2_it","$2_it",
 703                                                       "EXPORT_VAR_AS_FUNCTION",
 704                                                       "FUNCTION");
 705                                         next;
 706                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS\s*\(\s*(\w*)\s*\)/ ||
 707                                          /^\s*DECLARE_ASN1_FUNCTIONS_const\s*\(\s*(\w*)\s*\)/) {
 708                                         $def .= "int d2i_$1(void);";
 709                                         $def .= "int i2d_$1(void);";
 710                                         $def .= "int $1_free(void);";
 711                                         $def .= "int $1_new(void);";
 712                                         # Variant for platforms that do not
 713                                         # have to access globale variables
 714                                         # in shared libraries through functions
 715                                         $def .=
 716                                             "#INFO:"
 717                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 718                                                     .join(',',@current_algorithms).";";
 719                                         $def .= "OPENSSL_EXTERN int $1_it;";
 720                                         $def .=
 721                                             "#INFO:"
 722                                                 .join(',',@current_platforms).":"
 723                                                     .join(',',@current_algorithms).";";
 724                                         # Variant for platforms that have to
 725                                         # access globale variables in shared
 726                                         # libraries through functions
 727                                         &$make_variant("$1_it","$1_it",
 728                                                       "EXPORT_VAR_AS_FUNCTION",
 729                                                       "FUNCTION");
 730                                         next;
 731                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS_const\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 732                                         $def .= "int d2i_$2(void);";
 733                                         $def .= "int i2d_$2(void);";
 734                                         # Variant for platforms that do not
 735                                         # have to access globale variables
 736                                         # in shared libraries through functions
 737                                         $def .=
 738                                             "#INFO:"
 739                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 740                                                     .join(',',@current_algorithms).";";
 741                                         $def .= "OPENSSL_EXTERN int $2_it;";
 742                                         $def .=
 743                                             "#INFO:"
 744                                                 .join(',',@current_platforms).":"
 745                                                     .join(',',@current_algorithms).";";
 746                                         # Variant for platforms that have to
 747                                         # access globale variables in shared
 748                                         # libraries through functions
 749                                         &$make_variant("$2_it","$2_it",
 750                                                       "EXPORT_VAR_AS_FUNCTION",
 751                                                       "FUNCTION");
 752                                         next;
 753                                 } elsif (/^\s*DECLARE_ASN1_ALLOC_FUNCTIONS\s*\(\s*(\w*)\s*\)/) {
 754                                         $def .= "int $1_free(void);";
 755                                         $def .= "int $1_new(void);";
 756                                         next;
 757                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 758                                         $def .= "int d2i_$2(void);";
 759                                         $def .= "int i2d_$2(void);";
 760                                         $def .= "int $2_free(void);";
 761                                         $def .= "int $2_new(void);";
 762                                         # Variant for platforms that do not
 763                                         # have to access globale variables
 764                                         # in shared libraries through functions
 765                                         $def .=
 766                                             "#INFO:"
 767                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 768                                                     .join(',',@current_algorithms).";";
 769                                         $def .= "OPENSSL_EXTERN int $2_it;";
 770                                         $def .=
 771                                             "#INFO:"
 772                                                 .join(',',@current_platforms).":"
 773                                                     .join(',',@current_algorithms).";";
 774                                         # Variant for platforms that have to
 775                                         # access globale variables in shared
 776                                         # libraries through functions
 777                                         &$make_variant("$2_it","$2_it",
 778                                                       "EXPORT_VAR_AS_FUNCTION",
 779                                                       "FUNCTION");
 780                                         next;
 781                                 } elsif (/^\s*DECLARE_ASN1_ITEM\s*\(\s*(\w*)\s*\)/) {
 782                                         # Variant for platforms that do not
 783                                         # have to access globale variables
 784                                         # in shared libraries through functions
 785                                         $def .=
 786                                             "#INFO:"
 787                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 788                                                     .join(',',@current_algorithms).";";
 789                                         $def .= "OPENSSL_EXTERN int $1_it;";
 790                                         $def .=
 791                                             "#INFO:"
 792                                                 .join(',',@current_platforms).":"
 793                                                     .join(',',@current_algorithms).";";
 794                                         # Variant for platforms that have to
 795                                         # access globale variables in shared
 796                                         # libraries through functions
 797                                         &$make_variant("$1_it","$1_it",
 798                                                       "EXPORT_VAR_AS_FUNCTION",
 799                                                       "FUNCTION");
 800                                         next;
 801                                 } elsif (/^\s*DECLARE_ASN1_NDEF_FUNCTION\s*\(\s*(\w*)\s*\)/) {
 802                                         $def .= "int i2d_$1_NDEF(void);";
 803                                 } elsif (/^\s*DECLARE_ASN1_SET_OF\s*\(\s*(\w*)\s*\)/) {
 804                                         next;
 805                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION\s*\(\s*(\w*)\s*\)/) {
 806                                         $def .= "int $1_print_ctx(void);";
 807                                         next;
 808                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 809                                         $def .= "int $2_print_ctx(void);";
 810                                         next;
 811                                 } elsif (/^\s*DECLARE_PKCS12_STACK_OF\s*\(\s*(\w*)\s*\)/) {
 812                                         next;
 813                                 } elsif (/^DECLARE_PEM_rw\s*\(\s*(\w*)\s*,/ ||
 814                                          /^DECLARE_PEM_rw_cb\s*\(\s*(\w*)\s*,/ ||
 815                                          /^DECLARE_PEM_rw_const\s*\(\s*(\w*)\s*,/ ) {
 816                                         $def .=
 817                                             "#INFO:"
 818                                                 .join(',',@current_platforms).":"
 819                                                     .join(',',"STDIO",@current_algorithms).";";
 820                                         $def .= "int PEM_read_$1(void);";
 821                                         $def .= "int PEM_write_$1(void);";
 822                                         $def .=
 823                                             "#INFO:"
 824                                                 .join(',',@current_platforms).":"
 825                                                     .join(',',@current_algorithms).";";
 826                                         # Things that are everywhere
 827                                         $def .= "int PEM_read_bio_$1(void);";
 828                                         $def .= "int PEM_write_bio_$1(void);";
 829                                         next;
 830                                 } elsif (/^DECLARE_PEM_write\s*\(\s*(\w*)\s*,/ ||
 831                                         /^DECLARE_PEM_write_const\s*\(\s*(\w*)\s*,/ ||
 832                                          /^DECLARE_PEM_write_cb\s*\(\s*(\w*)\s*,/ ) {
 833                                         $def .=
 834                                             "#INFO:"
 835                                                 .join(',',@current_platforms).":"
 836                                                     .join(',',"STDIO",@current_algorithms).";";
 837                                         $def .= "int PEM_write_$1(void);";
 838                                         $def .=
 839                                             "#INFO:"
 840                                                 .join(',',@current_platforms).":"
 841                                                     .join(',',@current_algorithms).";";
 842                                         # Things that are everywhere
 843                                         $def .= "int PEM_write_bio_$1(void);";
 844                                         next;
 845                                 } elsif (/^DECLARE_PEM_read\s*\(\s*(\w*)\s*,/ ||
 846                                          /^DECLARE_PEM_read_cb\s*\(\s*(\w*)\s*,/ ) {
 847                                         $def .=
 848                                             "#INFO:"
 849                                                 .join(',',@current_platforms).":"
 850                                                     .join(',',"STDIO",@current_algorithms).";";
 851                                         $def .= "int PEM_read_$1(void);";
 852                                         $def .=
 853                                             "#INFO:"
 854                                                 .join(',',@current_platforms).":"
 855                                                     .join(',',"STDIO",@current_algorithms).";";
 856                                         # Things that are everywhere
 857                                         $def .= "int PEM_read_bio_$1(void);";
 858                                         next;
 859                                 } elsif (/^OPENSSL_DECLARE_GLOBAL\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 860                                         # Variant for platforms that do not
 861                                         # have to access globale variables
 862                                         # in shared libraries through functions
 863                                         $def .=
 864                                             "#INFO:"
 865                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 866                                                     .join(',',@current_algorithms).";";
 867                                         $def .= "OPENSSL_EXTERN int _shadow_$2;";
 868                                         $def .=
 869                                             "#INFO:"
 870                                                 .join(',',@current_platforms).":"
 871                                                     .join(',',@current_algorithms).";";
 872                                         # Variant for platforms that have to
 873                                         # access globale variables in shared
 874                                         # libraries through functions
 875                                         &$make_variant("_shadow_$2","_shadow_$2",
 876                                                       "EXPORT_VAR_AS_FUNCTION",
 877                                                       "FUNCTION");
 878                                 } elsif (/^\s*DEPRECATEDIN/) {
 879                                         $parens = count_parens($_);
 880                                         if ($parens == 0) {
 881                                                 $def .= do_deprecated($_,
 882                                                         \@current_platforms,
 883                                                         \@current_algorithms);
 884                                         } else {
 885                                                 $stored_multiline = $_;
 886                                                 $stored_multiline =~ s|\R$||;
 887                                                 print STDERR "DEBUG: Found multiline DEPRECATEDIN starting with: $stored_multiline\n" if $debug;
 888                                                 next;
 889                                         }
 890                                 } elsif ($tag{'CONST_STRICT'} != 1) {
 891                                         if (/\{|\/\*|\([^\)]*$/) {
 892                                                 $line = $_;
 893                                         } else {
 894                                                 $def .= $_;
 895                                         }
 896                                 }
 897                         }
 898                 }
 899                 close(IN);
 900                 die "$file: Unmatched tags\n" if $#tag >= 0;
 901
 902                 my $algs;
 903                 my $plays;
 904
 905                 print STDERR "DEBUG: postprocessing ----------\n" if $debug;
 906                 foreach (split /;/, $def) {
 907                         my $s; my $k = "FUNCTION"; my $p; my $a;
 908                         s/^[\n\s]*//g;
 909                         s/[\n\s]*$//g;
 910                         next if(/\#undef/);
 911                         next if(/typedef\W/);
 912                         next if(/\#define/);
 913
 914                         # Reduce argument lists to empty ()
 915                         # fold round brackets recursively: (t(*v)(t),t) -> (t{}{},t) -> {}
 916                         while(/\(.*\)/s) {
 917                                 s/\([^\(\)]+\)/\{\}/gs;
 918                                 s/\(\s*\*\s*(\w+)\s*\{\}\s*\)/$1/gs;    #(*f{}) -> f
 919                         }
 920                         # pretend as we didn't use curly braces: {} -> ()
 921                         s/\{\}/\(\)/gs;
 922
 923                         s/STACK_OF\(\)/void/gs;
 924                         s/LHASH_OF\(\)/void/gs;
 925
 926                         print STDERR "DEBUG: \$_ = \"$_\"\n" if $debug;
 927                         if (/^\#INFO:([^:]*):(.*)$/) {
 928                                 $plats = $1;
 929                                 $algs = $2;
 930                                 print STDERR "DEBUG: found info on platforms ($plats) and algorithms ($algs)\n" if $debug;
 931                                 next;
 932                         } elsif (/^\s*OPENSSL_EXTERN\s.*?(\w+(\{[0-9]+\})?)(\[[0-9]*\])*\s*$/) {
 933                                 $s = $1;
 934                                 $k = "VARIABLE";
 935                                 print STDERR "DEBUG: found external variable $s\n" if $debug;
 936                         } elsif (/TYPEDEF_\w+_OF/s) {
 937                                 next;
 938                         } elsif (/(\w+)\s*\(\).*/s) {   # first token prior [first] () is
 939                                 $s = $1;                # a function name!
 940                                 print STDERR "DEBUG: found function $s\n" if $debug;
 941                         } elsif (/\(/ and not (/=/)) {
 942                                 print STDERR "File $file: cannot parse: $_;\n";
 943                                 next;
 944                         } else {
 945                                 next;
 946                         }
 947
 948                         $syms{$s} = 1;
 949                         $kind{$s} = $k;
 950
 951                         $p = $plats;
 952                         $a = $algs;
 953
 954                         $platform{$s} =
 955                             &reduce_platforms((defined($platform{$s})?$platform{$s}.',':"").$p);
 956                         $algorithm{$s} .= ','.$a;
 957
 958                         if (defined($variant{$s})) {
 959                                 foreach $v (split /;/,$variant{$s}) {
 960                                         (my $r, my $p, my $k) = split(/:/,$v);
 961                                         my $ip = join ',',map({ /^!(.*)$/ ? $1 : "!".$_ } split /,/, $p);
 962                                         $syms{$r} = 1;
 963                                         if (!defined($k)) { $k = $kind{$s}; }
 964                                         $kind{$r} = $k."(".$s.")";
 965                                         $algorithm{$r} = $algorithm{$s};
 966                                         $platform{$r} = &reduce_platforms($platform{$s}.",".$p.",".$p);
 967                                         $platform{$s} = &reduce_platforms($platform{$s}.','.$ip.','.$ip);
 968                                         print STDERR "DEBUG: \$variant{\"$s\"} = ",$v,"; \$r = $r; \$p = ",$platform{$r},"; \$a = ",$algorithm{$r},"; \$kind = ",$kind{$r},"\n" if $debug;
 969                                 }
 970                         }
 971                         print STDERR "DEBUG: \$s = $s; \$p = ",$platform{$s},"; \$a = ",$algorithm{$s},"; \$kind = ",$kind{$s},"\n" if $debug;
 972                 }
 973         }
 974
 975         # Prune the returned symbols
 976
 977         delete $syms{"bn_dump1"};
 978         $platform{"BIO_s_log"} .= ",!WIN32,!macintosh";
 979
 980         $platform{"PEM_read_NS_CERT_SEQ"} = "VMS";
 981         $platform{"PEM_write_NS_CERT_SEQ"} = "VMS";
 982         $platform{"PEM_read_P8_PRIV_KEY_INFO"} = "VMS";
 983         $platform{"PEM_write_P8_PRIV_KEY_INFO"} = "VMS";
 984         $platform{"EVP_sha384"} = "!VMSVAX";
 985         $platform{"EVP_sha512"} = "!VMSVAX";
 986         $platform{"SHA384_Init"} = "!VMSVAX";
 987         $platform{"SHA384_Transform"} = "!VMSVAX";
 988         $platform{"SHA384_Update"} = "!VMSVAX";
 989         $platform{"SHA384_Final"} = "!VMSVAX";
 990         $platform{"SHA384"} = "!VMSVAX";
 991         $platform{"SHA512_Init"} = "!VMSVAX";
 992         $platform{"SHA512_Transform"} = "!VMSVAX";
 993         $platform{"SHA512_Update"} = "!VMSVAX";
 994         $platform{"SHA512_Final"} = "!VMSVAX";
 995         $platform{"SHA512"} = "!VMSVAX";
 996
 997
 998         # Info we know about
 999
1000         push @ret, map { $_."\\".&info_string($_,"EXIST",
1001                                               $platform{$_},
1002                                               $kind{$_},
1003                                               $algorithm{$_}) } keys %syms;
1004
1005         if (keys %unknown_algorithms) {
1006                 print STDERR "WARNING: mkdef.pl doesn't know the following algorithms:\n";
1007                 print STDERR "\t",join("\n\t",keys %unknown_algorithms),"\n";
1008         }
1009         return(@ret);
1010 }
1011
1012 # Param: string of comma-separated platform-specs.
1013 sub reduce_platforms
1014 {
1015         my ($platforms) = @_;
1016         my $pl = defined($platforms) ? $platforms : "";
1017         my %p = map { $_ => 0 } split /,/, $pl;
1018         my $ret;
1019
1020         print STDERR "DEBUG: Entered reduce_platforms with \"$platforms\"\n"
1021             if $debug;
1022         # We do this, because if there's code like the following, it really
1023         # means the function exists in all cases and should therefore be
1024         # everywhere.  By increasing and decreasing, we may attain 0:
1025         #
1026         # ifndef WIN16
1027         #    int foo();
1028         # else
1029         #    int _fat foo();
1030         # endif
1031         foreach $platform (split /,/, $pl) {
1032                 if ($platform =~ /^!(.*)$/) {
1033                         $p{$1}--;
1034                 } else {
1035                         $p{$platform}++;
1036                 }
1037         }
1038         foreach $platform (keys %p) {
1039                 if ($p{$platform} == 0) { delete $p{$platform}; }
1040         }
1041
1042         delete $p{""};
1043
1044         $ret = join(',',sort(map { $p{$_} < 0 ? "!".$_ : $_ } keys %p));
1045         print STDERR "DEBUG: Exiting reduce_platforms with \"$ret\"\n"
1046             if $debug;
1047         return $ret;
1048 }
1049
1050 sub info_string
1051 {
1052         (my $symbol, my $exist, my $platforms, my $kind, my $algorithms) = @_;
1053
1054         my %a = defined($algorithms) ?
1055             map { $_ => 1 } split /,/, $algorithms : ();
1056         my $k = defined($kind) ? $kind : "FUNCTION";
1057         my $ret;
1058         my $p = &reduce_platforms($platforms);
1059
1060         delete $a{""};
1061
1062         $ret = $exist;
1063         $ret .= ":".$p;
1064         $ret .= ":".$k;
1065         $ret .= ":".join(',',sort keys %a);
1066         return $ret;
1067 }
1068
1069 sub maybe_add_info
1070 {
1071         (my $name, *nums, my @symbols) = @_;
1072         my $sym;
1073         my $new_info = 0;
1074         my %syms=();
1075
1076         foreach $sym (@symbols) {
1077                 (my $s, my $i) = split /\\/, $sym;
1078                 if (defined($nums{$s})) {
1079                         $i =~ s/^(.*?:.*?:\w+)(\(\w+\))?/$1/;
1080                         (my $n, my $vers, my $dummy) = split /\\/, $nums{$s};
1081                         if (!defined($dummy) || $i ne $dummy) {
1082                                 $nums{$s} = $n."\\".$vers."\\".$i;
1083                                 $new_info++;
1084                                 print STDERR "DEBUG: maybe_add_info for $s: \"$dummy\" => \"$i\"\n" if $debug;
1085                         }
1086                 }
1087                 $syms{$s} = 1;
1088         }
1089
1090         my @s=sort { &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n") } keys %nums;
1091         foreach $sym (@s) {
1092                 (my $n, my $vers, my $i) = split /\\/, $nums{$sym};
1093                 if (!defined($syms{$sym}) && $i !~ /^NOEXIST:/) {
1094                         $new_info++;
1095                         print STDERR "DEBUG: maybe_add_info for $sym: -> undefined\n" if $debug;
1096                 }
1097         }
1098         if ($new_info) {
1099                 print STDERR "$name: $new_info old symbols have updated info\n";
1100                 if (!$do_rewrite) {
1101                         print STDERR "You should do a rewrite to fix this.\n";
1102                 }
1103         } else {
1104         }
1105 }
1106
1107 # Param: string of comma-separated keywords, each possibly prefixed with a "!"
1108 sub is_valid
1109 {
1110         my ($keywords_txt,$platforms) = @_;
1111         my (@keywords) = split /,/,$keywords_txt;
1112         my ($falsesum, $truesum) = (0, 1);
1113
1114         # Param: one keyword
1115         sub recognise
1116         {
1117                 my ($keyword,$platforms) = @_;
1118
1119                 if ($platforms) {
1120                         # platforms
1121                         if ($keyword eq "VMSVAX" && $VMSVAX) { return 1; }
1122                         if ($keyword eq "VMSNonVAX" && $VMSNonVAX) { return 1; }
1123                         if ($keyword eq "VMS" && $VMS) { return 1; }
1124                         if ($keyword eq "WIN32" && $W32) { return 1; }
1125                         if ($keyword eq "_WIN32" && $W32) { return 1; }
1126                         if ($keyword eq "WINNT" && $NT) { return 1; }
1127                         # Special platforms:
1128                         # EXPORT_VAR_AS_FUNCTION means that global variables
1129                         # will be represented as functions.  This currently
1130                         # only happens on VMS-VAX.
1131                         if ($keyword eq "EXPORT_VAR_AS_FUNCTION" && ($VMSVAX || $W32)) {
1132                                 return 1;
1133                         }
1134                         if ($keyword eq "ZLIB" && $zlib) { return 1; }
1135                         return 0;
1136                 } else {
1137                         # algorithms
1138                         if ($disabled_algorithms{$keyword} == 1) { return 0;}
1139
1140                         # Nothing recognise as true
1141                         return 1;
1142                 }
1143         }
1144
1145         foreach $k (@keywords) {
1146                 if ($k =~ /^!(.*)$/) {
1147                         $falsesum += &recognise($1,$platforms);
1148                 } else {
1149                         $truesum *= &recognise($k,$platforms);
1150                 }
1151         }
1152         print STDERR "DEBUG: [",$#keywords,",",$#keywords < 0,"] is_valid($keywords_txt) => (\!$falsesum) && $truesum = ",(!$falsesum) && $truesum,"\n" if $debug;
1153         return (!$falsesum) && $truesum;
1154 }
1155
1156 sub print_test_file
1157 {
1158         (*OUT,my $name,*nums,my $testall,my @symbols)=@_;
1159         my $n = 1; my @e; my @r;
1160         my $sym; my $prev = ""; my $prefSSLeay;
1161
1162         (@e)=grep(/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1163         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:.*/ && !/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1164         @symbols=((sort @e),(sort @r));
1165
1166         foreach $sym (@symbols) {
1167                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1168                 my $v = 0;
1169                 $v = 1 if $i=~ /^.*?:.*?:VARIABLE/;
1170                 my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1171                 my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1172                 if (!defined($nums{$s})) {
1173                         print STDERR "Warning: $s does not have a number assigned\n"
1174                             if(!$do_update);
1175                 } elsif (is_valid($p,1) && is_valid($a,0)) {
1176                         my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1177                         if ($prev eq $s2) {
1178                                 print OUT "\t/* The following has already appeared previously */\n";
1179                                 print STDERR "Warning: Symbol '",$s2,"' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1180                         }
1181                         $prev = $s2;    # To warn about duplicates...
1182
1183                         (my $nn, my $vers, my $ni) = split /\\/, $nums{$s2};
1184                         if ($v) {
1185                                 print OUT "\textern int $s2; /* type unknown */ /* $nn $ni */\n";
1186                         } else {
1187                                 print OUT "\textern int $s2(); /* type unknown */ /* $nn $ni */\n";
1188                         }
1189                 }
1190         }
1191 }
1192
1193 sub get_version
1194 {
1195    return $config{version};
1196 }
1197
1198 sub print_def_file
1199 {
1200         (*OUT,my $name,*nums,my @symbols)=@_;
1201         my $n = 1; my @e; my @r; my @v; my $prev="";
1202         my $liboptions="";
1203         my $libname = $name;
1204         my $http_vendor = 'www.openssl.org/';
1205         my $version = get_version();
1206         my $what = "OpenSSL: implementation of Secure Socket Layer";
1207         my $description = "$what $version, $name - http://$http_vendor";
1208         my $prevsymversion = "", $prevprevsymversion = "";
1209         # For VMS
1210         my $prevnum = 0;
1211         my $symvtextcount = 0;
1212
1213         if ($W32)
1214                 { $libname.="32"; }
1215
1216         if ($W32)
1217                 {
1218                 print OUT <<"EOF";
1219 ;
1220 ; Definition file for the DLL version of the $name library from OpenSSL
1221 ;
1222
1223 LIBRARY         $libname        $liboptions
1224
1225 EOF
1226
1227                 print "EXPORTS\n";
1228                 }
1229         elsif ($VMS)
1230                 {
1231                 print OUT <<"EOF";
1232 CASE_SENSITIVE=YES
1233 SYMBOL_VECTOR=(-
1234 EOF
1235                 $symvtextcount = 16; # length of "SYMBOL_VECTOR=(-"
1236                 }
1237
1238         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:FUNCTION/,@symbols);
1239         (@v)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:VARIABLE/,@symbols);
1240         if ($VMS) {
1241             # VMS needs to have the symbols on slot number order
1242             @symbols=(map { $_->[1] }
1243                       sort { $a->[0] <=> $b->[0] }
1244                       map { (my $s, my $i) = $_ =~ /^(.*?)\\(.*)$/;
1245                             die "Error: $s doesn't have a number assigned\n"
1246                                 if !defined($nums{$s});
1247                             (my $n, my @rest) = split /\\/, $nums{$s};
1248                             [ $n, $_ ] } (@e, @r, @v));
1249         } else {
1250             @symbols=((sort @e),(sort @r), (sort @v));
1251         }
1252
1253         my ($baseversion, $currversion) = get_openssl_version();
1254         my $thisversion;
1255         do {
1256                 if (!defined($thisversion)) {
1257                         $thisversion = $baseversion;
1258                 } else {
1259                         $thisversion = get_next_version($thisversion);
1260                 }
1261                 foreach $sym (@symbols) {
1262                         (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1263                         my $v = 0;
1264                         $v = 1 if $i =~ /^.*?:.*?:VARIABLE/;
1265                         if (!defined($nums{$s})) {
1266                                 die "Error: $s does not have a number assigned\n"
1267                                         if(!$do_update);
1268                         } else {
1269                                 (my $n, my $symversion, my $dummy) = split /\\/, $nums{$s};
1270                                 next if $symversion ne $thisversion;
1271                                 my %pf = ();
1272                                 my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1273                                 my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1274                                 if (is_valid($p,1) && is_valid($a,0)) {
1275                                         my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1276                                         if ($prev eq $s2) {
1277                                                 print STDERR "Warning: Symbol '",$s2,
1278                                                         "' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),
1279                                                         ", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1280                                         }
1281                                         $prev = $s2;    # To warn about duplicates...
1282                                         if($linux) {
1283                                                 if ($symversion ne $prevsymversion) {
1284                                                         if ($prevsymversion ne "") {
1285                                                                 if ($prevprevsymversion ne "") {
1286                                                                         print OUT "} OPENSSL_"
1287                                                                                                 ."$prevprevsymversion;\n\n";
1288                                                                 } else {
1289                                                                         print OUT "};\n\n";
1290                                                                 }
1291                                                         }
1292                                                         print OUT "OPENSSL_$symversion {\n    global:\n";
1293                                                         $prevprevsymversion = $prevsymversion;
1294                                                         $prevsymversion = $symversion;
1295                                                 }
1296                                                 print OUT "        $s2;\n";
1297                                         } elsif ($VMS) {
1298                                             while(++$prevnum < $n) {
1299                                                 my $symline=" ,SPARE -\n  ,SPARE -\n";
1300                                                 if ($symvtextcount + length($symline) - 2 > 1024) {
1301                                                     print OUT ")\nSYMBOL_VECTOR=(-\n";
1302                                                     $symvtextcount = 16; # length of "SYMBOL_VECTOR=(-"
1303                                                 }
1304                                                 if ($symvtextcount == 16) {
1305                                                     # Take away first comma
1306                                                     $symline =~ s/,//;
1307                                                 }
1308                                                 print OUT $symline;
1309                                                 $symvtextcount += length($symline) - 2;
1310                                             }
1311                                             (my $s_uc = $s) =~ tr/a-z/A-Z/;
1312                                             my $symtype=
1313                                                 $v ? "DATA" : "PROCEDURE";
1314                                             my $symline=
1315                                                 ($s_uc ne $s
1316                                                  ? " ,$s_uc/$s=$symtype -\n  ,$s=$symtype -\n"
1317                                                  : " ,$s=$symtype -\n  ,SPARE -\n");
1318                                             if ($symvtextcount + length($symline) - 2 > 1024) {
1319                                                 print OUT ")\nSYMBOL_VECTOR=(-\n";
1320                                                 $symvtextcount = 16; # length of "SYMBOL_VECTOR=(-"
1321                                             }
1322                                             if ($symvtextcount == 16) {
1323                                                 # Take away first comma
1324                                                 $symline =~ s/,//;
1325                                             }
1326                                             print OUT $symline;
1327                                             $symvtextcount += length($symline) - 2;
1328                                         } elsif($v) {
1329                                                 printf OUT "    %s%-39s DATA\n",
1330                                                                 ($W32)?"":"_",$s2;
1331                                         } else {
1332                                                 printf OUT "    %s%s\n",
1333                                                                 ($W32)?"":"_",$s2;
1334                                         }
1335                                 }
1336                         }
1337                 }
1338         } while ($thisversion ne $currversion);
1339         if ($linux) {
1340                 if ($prevprevsymversion ne "") {
1341                         print OUT "    local: *;\n} OPENSSL_$prevprevsymversion;\n\n";
1342                 } else {
1343                         print OUT "    local: *;\n};\n\n";
1344                 }
1345         } elsif ($VMS) {
1346             print OUT ")\n";
1347             (my $libvmaj, my $libvmin, my $libvedit) =
1348                 $currversion =~ /^(\d+)_(\d+)_(\d+)$/;
1349             # The reason to multiply the edit number with 100 is to make space
1350             # for the possibility that we want to encode the patch letters
1351             print OUT "GSMATCH=LEQUAL,",($libvmaj * 100 + $libvmin),",",($libvedit * 100),"\n";
1352         }
1353         printf OUT "\n";
1354 }
1355
1356 sub load_numbers
1357 {
1358         my($name)=@_;
1359         my(@a,%ret);
1360         my $prevversion;
1361
1362         $max_num = 0;
1363         $num_noinfo = 0;
1364         $prev = "";
1365         $prev_cnt = 0;
1366
1367         my ($baseversion, $currversion) = get_openssl_version();
1368
1369         open(IN,"<$name") || die "unable to open $name:$!\n";
1370         while (<IN>) {
1371                 s|\R$||;        # Better chomp
1372                 s/#.*$//;
1373                 next if /^\s*$/;
1374                 @a=split;
1375                 if (defined $ret{$a[0]}) {
1376                         # This is actually perfectly OK
1377                         #print STDERR "Warning: Symbol '",$a[0],"' redefined. old=",$ret{$a[0]},", new=",$a[1],"\n";
1378                 }
1379                 if ($max_num > $a[1]) {
1380                         print STDERR "Warning: Number decreased from ",$max_num," to ",$a[1],"\n";
1381                 }
1382                 elsif ($max_num == $a[1]) {
1383                         # This is actually perfectly OK
1384                         #print STDERR "Warning: Symbol ",$a[0]," has same number as previous ",$prev,": ",$a[1],"\n";
1385                         if ($a[0] eq $prev) {
1386                                 $prev_cnt++;
1387                                 $a[0] .= "{$prev_cnt}";
1388                         }
1389                 }
1390                 else {
1391                         $prev_cnt = 0;
1392                 }
1393                 if ($#a < 2) {
1394                         # Existence will be proven later, in do_defs
1395                         $ret{$a[0]}=$a[1];
1396                         $num_noinfo++;
1397                 } else {
1398                         #Sanity check the version number
1399                         if (defined $prevversion) {
1400                                 check_version_lte($prevversion, $a[2]);
1401                         }
1402                         check_version_lte($a[2], $currversion);
1403                         $prevversion = $a[2];
1404                         $ret{$a[0]}=$a[1]."\\".$a[2]."\\".$a[3]; # \\ is a special marker
1405                 }
1406                 $max_num = $a[1] if $a[1] > $max_num;
1407                 $prev=$a[0];
1408         }
1409         if ($num_noinfo) {
1410                 print STDERR "Warning: $num_noinfo symbols were without info.";
1411                 if ($do_rewrite) {
1412                         printf STDERR "  The rewrite will fix this.\n";
1413                 } else {
1414                         printf STDERR "  You should do a rewrite to fix this.\n";
1415                 }
1416         }
1417         close(IN);
1418         return(%ret);
1419 }
1420
1421 sub parse_number
1422 {
1423         (my $str, my $what) = @_;
1424         (my $n, my $v, my $i) = split(/\\/,$str);
1425         if ($what eq "n") {
1426                 return $n;
1427         } else {
1428                 return $i;
1429         }
1430 }
1431
1432 sub rewrite_numbers
1433 {
1434         (*OUT,$name,*nums,@symbols)=@_;
1435         my $thing;
1436
1437         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1438         my $r; my %r; my %rsyms;
1439         foreach $r (@r) {
1440                 (my $s, my $i) = split /\\/, $r;
1441                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1442                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1443                 $r{$a} = $s."\\".$i;
1444                 $rsyms{$s} = 1;
1445         }
1446
1447         my %syms = ();
1448         foreach $_ (@symbols) {
1449                 (my $n, my $i) = split /\\/;
1450                 $syms{$n} = 1;
1451         }
1452
1453         my @s=sort {
1454             &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n")
1455             || $a cmp $b
1456         } keys %nums;
1457         foreach $sym (@s) {
1458                 (my $n, my $vers, my $i) = split /\\/, $nums{$sym};
1459                 next if defined($i) && $i =~ /^.*?:.*?:\w+\(\w+\)/;
1460                 next if defined($rsyms{$sym});
1461                 print STDERR "DEBUG: rewrite_numbers for sym = ",$sym,": i = ",$i,", n = ",$n,", rsym{sym} = ",$rsyms{$sym},"syms{sym} = ",$syms{$sym},"\n" if $debug;
1462                 $i="NOEXIST::FUNCTION:"
1463                         if !defined($i) || $i eq "" || !defined($syms{$sym});
1464                 my $s2 = $sym;
1465                 $s2 =~ s/\{[0-9]+\}$//;
1466                 printf OUT "%s%-39s %d\t%s\t%s\n","",$s2,$n,$vers,$i;
1467                 if (exists $r{$sym}) {
1468                         (my $s, $i) = split /\\/,$r{$sym};
1469                         my $s2 = $s;
1470                         $s2 =~ s/\{[0-9]+\}$//;
1471                         printf OUT "%s%-39s %d\t%s\t%s\n","",$s2,$n,$vers,$i;
1472                 }
1473         }
1474 }
1475
1476 sub update_numbers
1477 {
1478         (*OUT,$name,*nums,my $start_num, my @symbols)=@_;
1479         my $new_syms = 0;
1480         my $basevers;
1481         my $vers;
1482
1483         ($basevers, $vers) = get_openssl_version();
1484
1485         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1486         my $r; my %r; my %rsyms;
1487         foreach $r (@r) {
1488                 (my $s, my $i) = split /\\/, $r;
1489                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1490                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1491                 $r{$a} = $s."\\".$i;
1492                 $rsyms{$s} = 1;
1493         }
1494
1495         foreach $sym (@symbols) {
1496                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1497                 next if $i =~ /^.*?:.*?:\w+\(\w+\)/;
1498                 next if defined($rsyms{$sym});
1499                 die "ERROR: Symbol $sym had no info attached to it."
1500                     if $i eq "";
1501                 if (!exists $nums{$s}) {
1502                         $new_syms++;
1503                         my $s2 = $s;
1504                         $s2 =~ s/\{[0-9]+\}$//;
1505                         printf OUT "%s%-39s %d\t%s\t%s\n","",$s2, ++$start_num,$vers,$i;
1506                         if (exists $r{$s}) {
1507                                 ($s, $i) = split /\\/,$r{$s};
1508                                 $s =~ s/\{[0-9]+\}$//;
1509                                 printf OUT "%s%-39s %d\t%s\t%s\n","",$s, $start_num,$vers,$i;
1510                         }
1511                 }
1512         }
1513         if($new_syms) {
1514                 print STDERR "$name: Added $new_syms new symbols\n";
1515         } else {
1516                 print STDERR "$name: No new symbols added\n";
1517         }
1518 }
1519
1520 sub check_existing
1521 {
1522         (*nums, my @symbols)=@_;
1523         my %existing; my @remaining;
1524         @remaining=();
1525         foreach $sym (@symbols) {
1526                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1527                 $existing{$s}=1;
1528         }
1529         foreach $sym (keys %nums) {
1530                 if (!exists $existing{$sym}) {
1531                         push @remaining, $sym;
1532                 }
1533         }
1534         if(@remaining) {
1535                 print STDERR "The following symbols do not seem to exist:\n";
1536                 foreach $sym (@remaining) {
1537                         print STDERR "\t",$sym,"\n";
1538                 }
1539         }
1540 }
1541
1542 sub count_parens
1543 {
1544         my $line = shift(@_);
1545
1546         my $open = $line =~ tr/\(//;
1547         my $close = $line =~ tr/\)//;
1548
1549         return $open - $close;
1550 }
1551
1552 #Parse opensslv.h to get the current version number. Also work out the base
1553 #version, i.e. the lowest version number that is binary compatible with this
1554 #version
1555 sub get_openssl_version()
1556 {
1557         my $fn = catfile($config{sourcedir},"include","openssl","opensslv.h");
1558         open (IN, "$fn") || die "Can't open opensslv.h";
1559
1560         while(<IN>) {
1561                 if (/OPENSSL_VERSION_TEXT\s+"OpenSSL (\d\.\d\.)(\d[a-z]*)(-| )/) {
1562                         my $suffix = $2;
1563                         (my $baseversion = $1) =~ s/\./_/g;
1564                         close IN;
1565                         return ($baseversion."0", $baseversion.$suffix);
1566                 }
1567         }
1568         die "Can't find OpenSSL version number\n";
1569 }
1570
1571 #Given an OpenSSL version number, calculate the next version number. If the
1572 #version number gets to a.b.czz then we go to a.b.(c+1)
1573 sub get_next_version()
1574 {
1575         my $thisversion = shift;
1576
1577         my ($base, $letter) = $thisversion =~ /^(\d_\d_\d)([a-z]{0,2})$/;
1578
1579         if ($letter eq "zz") {
1580                 my $lastnum = substr($base, -1);
1581                 return substr($base, 0, length($base)-1).(++$lastnum);
1582         }
1583         return $base.get_next_letter($letter);
1584 }
1585
1586 #Given the letters off the end of an OpenSSL version string, calculate what
1587 #the letters for the next release would be.
1588 sub get_next_letter()
1589 {
1590         my $thisletter = shift;
1591         my $baseletter = "";
1592         my $endletter;
1593
1594         if ($thisletter eq "") {
1595                 return "a";
1596         }
1597         if ((length $thisletter) > 1) {
1598                 ($baseletter, $endletter) = $thisletter =~ /([a-z]+)([a-z])/;
1599         } else {
1600                 $endletter = $thisletter;
1601         }
1602
1603         if ($endletter eq "z") {
1604                 return $thisletter."a";
1605         } else {
1606                 return $baseletter.(++$endletter);
1607         }
1608 }
1609
1610 #Check if a version is less than or equal to the current version. Its a fatal
1611 #error if not. They must also only differ in letters, or the last number (i.e.
1612 #the first two numbers must be the same)
1613 sub check_version_lte()
1614 {
1615         my ($testversion, $currversion) = @_;
1616         my $lentv;
1617         my $lencv;
1618         my $cvbase;
1619
1620         my ($cvnums) = $currversion =~ /^(\d_\d_\d)[a-z]*$/;
1621         my ($tvnums) = $testversion =~ /^(\d_\d_\d)[a-z]*$/;
1622
1623         #Die if we can't parse the version numbers or they don't look sane
1624         die "Invalid version number: $testversion and $currversion\n"
1625                 if (!defined($cvnums) || !defined($tvnums)
1626                         || length($cvnums) != 5
1627                         || length($tvnums) != 5);
1628
1629         #If the base versions (without letters) don't match check they only differ
1630         #in the last number
1631         if ($cvnums ne $tvnums) {
1632                 die "Invalid version number: $testversion "
1633                         ."for current version $currversion\n"
1634                         if (substr($cvnums, 0, 4) ne substr($tvnums, 0, 4));
1635                 return;
1636         }
1637         #If we get here then the base version (i.e. the numbers) are the same - they
1638         #only differ in the letters
1639
1640         $lentv = length $testversion;
1641         $lencv = length $currversion;
1642
1643         #If the testversion has more letters than the current version then it must
1644         #be later (or malformed)
1645         if ($lentv > $lencv) {
1646                 die "Invalid version number: $testversion "
1647                         ."is greater than $currversion\n";
1648         }
1649
1650         #Get the last letter from the current version
1651         my ($cvletter) = $currversion =~ /([a-z])$/;
1652         if (defined $cvletter) {
1653                 ($cvbase) = $currversion =~ /(\d_\d_\d[a-z]*)$cvletter$/;
1654         } else {
1655                 $cvbase = $currversion;
1656         }
1657         die "Unable to parse version number $currversion" if (!defined $cvbase);
1658         my $tvbase;
1659         my ($tvletter) = $testversion =~ /([a-z])$/;
1660         if (defined $tvletter) {
1661                 ($tvbase) = $testversion =~ /(\d_\d_\d[a-z]*)$tvletter$/;
1662         } else {
1663                 $tvbase = $testversion;
1664         }
1665         die "Unable to parse version number $testversion" if (!defined $tvbase);
1666
1667         if ($lencv > $lentv) {
1668                 #If current version has more letters than testversion then testversion
1669                 #minus the final letter must be a substring of the current version
1670                 die "Invalid version number $testversion "
1671                         ."is greater than $currversion or is invalid\n"
1672                         if (index($cvbase, $tvbase) != 0);
1673         } else {
1674                 #If both versions have the same number of letters then they must be
1675                 #equal up to the last letter, and the last letter in testversion must
1676                 #be less than or equal to the last letter in current version.
1677                 die "Invalid version number $testversion "
1678                         ."is greater than $currversion\n"
1679                         if (($cvbase ne $tvbase) && ($tvletter gt $cvletter));
1680         }
1681 }
1682
1683 sub do_deprecated()
1684 {
1685         my ($decl, $plats, $algs) = @_;
1686         $decl =~ /^\s*(DEPRECATEDIN_\d+_\d+_\d+)\s*\((.*)\)\s*$/
1687             or die "Bad DEPRECTEDIN: $decl\n";
1688         my $info1 .= "#INFO:";
1689         $info1 .= join(',', @{$plats}) . ":";
1690         my $info2 = $info1;
1691         $info1 .= join(',',@{$algs}, $1) . ";";
1692         $info2 .= join(',',@{$algs}) . ";";
1693         return $info1 . $2 . ";" . $info2;
1694 }