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 use File::Basename;
  52 use if $^O ne "VMS", 'File::Glob' => qw/glob/;
  53
  54 my $debug=0;
  55
  56 my $crypto_num= catfile($config{sourcedir},"util","libcrypto.num");
  57 my $ssl_num=    catfile($config{sourcedir},"util","libssl.num");
  58 my $libname;
  59
  60 my $do_update = 0;
  61 my $do_rewrite = 1;
  62 my $do_crypto = 0;
  63 my $do_ssl = 0;
  64 my $do_ctest = 0;
  65 my $do_ctestall = 0;
  66 my $do_checkexist = 0;
  67
  68 my $VMS=0;
  69 my $W32=0;
  70 my $NT=0;
  71 my $UNIX=0;
  72 my $linux=0;
  73 # Set this to make typesafe STACK definitions appear in DEF
  74 my $safe_stack_def = 0;
  75
  76 my @known_platforms = ( "__FreeBSD__", "PERL5",
  77                         "EXPORT_VAR_AS_FUNCTION", "ZLIB", "_WIN32"
  78                         );
  79 my @known_ossl_platforms = ( "UNIX", "VMS", "WIN32", "WINNT", "OS2" );
  80 my @known_algorithms = ( "RC2", "RC4", "RC5", "IDEA", "DES", "BF",
  81                          "CAST", "MD2", "MD4", "MD5", "SHA", "SHA0", "SHA1",
  82                          "SHA256", "SHA512", "RMD160",
  83                          "MDC2", "WHIRLPOOL", "RSA", "DSA", "DH", "EC", "EC2M",
  84                          "HMAC", "AES", "CAMELLIA", "SEED", "GOST", "ARIA",
  85                          "SCRYPT", "CHACHA", "POLY1305", "BLAKE2",
  86                          "SIPHASH",
  87                          # EC_NISTP_64_GCC_128
  88                          "EC_NISTP_64_GCC_128",
  89                          # Envelope "algorithms"
  90                          "EVP", "X509", "ASN1_TYPEDEFS",
  91                          # Helper "algorithms"
  92                          "BIO", "COMP", "BUFFER", "LHASH", "STACK", "ERR",
  93                          "LOCKING",
  94                          # External "algorithms"
  95                          "FP_API", "STDIO", "SOCK", "DGRAM",
  96                          "CRYPTO_MDEBUG",
  97                          # Engines
  98                          "STATIC_ENGINE", "ENGINE", "HW", "GMP",
  99                          # Entropy Gathering
 100                          "EGD",
 101                          # Certificate Transparency
 102                          "CT",
 103                          # RFC3779
 104                          "RFC3779",
 105                          # TLS
 106                          "PSK", "SRP", "HEARTBEATS",
 107                          # CMS
 108                          "CMS",
 109                          "OCSP",
 110                          # CryptoAPI Engine
 111                          "CAPIENG",
 112                          # SSL methods
 113                          "SSL3_METHOD", "TLS1_METHOD", "TLS1_1_METHOD", "TLS1_2_METHOD", "DTLS1_METHOD", "DTLS1_2_METHOD",
 114                          # NEXTPROTONEG
 115                          "NEXTPROTONEG",
 116                          # Deprecated functions
 117                          "DEPRECATEDIN_0_9_8",
 118                          "DEPRECATEDIN_1_0_0",
 119                          "DEPRECATEDIN_1_1_0",
 120                          "DEPRECATEDIN_1_2_0",
 121                          # SCTP
 122                          "SCTP",
 123                          # SRTP
 124                          "SRTP",
 125                          # SSL TRACE
 126                          "SSL_TRACE",
 127                          # Unit testing
 128                          "UNIT_TEST",
 129                          # User Interface
 130                          "UI_CONSOLE",
 131                          #
 132                          "TS",
 133                          # OCB mode
 134                          "OCB",
 135                          "CMAC",
 136                          # APPLINK (win build feature?)
 137                          "APPLINK"
 138                      );
 139
 140 my %disabled_algorithms;
 141
 142 foreach (@known_algorithms) {
 143     $disabled_algorithms{$_} = 0;
 144 }
 145 # disabled by default
 146 $disabled_algorithms{"STATIC_ENGINE"} = 1;
 147
 148 my $apiv = sprintf "%x%02x%02x", split(/\./, $config{api});
 149 foreach (keys %disabled_algorithms) {
 150         if (/^DEPRECATEDIN_(\d+)_(\d+)_(\d+)$/) {
 151                 my $depv = sprintf "%x%02x%02x", $1, $2, $3;
 152                 $disabled_algorithms{$_} = 1 if $apiv ge $depv;
 153         }
 154 }
 155
 156 my $zlib;
 157
 158 foreach (@ARGV, split(/ /, $config{options}))
 159         {
 160         $debug=1 if $_ eq "debug";
 161         $W32=1 if $_ eq "32";
 162         die "win16 not supported" if $_ eq "16";
 163         if($_ eq "NT") {
 164                 $W32 = 1;
 165                 $NT = 1;
 166         }
 167         if ($_ eq "linux") {
 168                 $linux=1;
 169                 $UNIX=1;
 170         }
 171         $VMS=1 if $_ eq "VMS";
 172         if ($_ eq "zlib" || $_ eq "enable-zlib" || $_ eq "zlib-dynamic"
 173                          || $_ eq "enable-zlib-dynamic") {
 174                 $zlib = 1;
 175         }
 176
 177         $do_ssl=1 if $_ eq "libssl";
 178         if ($_ eq "ssl") {
 179                 $do_ssl=1;
 180                 $libname=$_
 181         }
 182         $do_crypto=1 if $_ eq "libcrypto";
 183         if ($_ eq "crypto") {
 184                 $do_crypto=1;
 185                 $libname=$_;
 186         }
 187         $do_update=1 if $_ eq "update";
 188         $do_rewrite=1 if $_ eq "rewrite";
 189         $do_ctest=1 if $_ eq "ctest";
 190         $do_ctestall=1 if $_ eq "ctestall";
 191         $do_checkexist=1 if $_ eq "exist";
 192         if (/^(enable|disable|no)-(.*)$/) {
 193                 my $alg = uc $2;
 194                 $alg =~ tr/-/_/;
 195                 if (exists $disabled_algorithms{$alg}) {
 196                         $disabled_algorithms{$alg} = $1 eq "enable" ? 0 : 1;
 197                 }
 198         }
 199
 200         }
 201
 202 if (!$libname) {
 203         if ($do_ssl) {
 204                 $libname="LIBSSL";
 205         }
 206         if ($do_crypto) {
 207                 $libname="LIBCRYPTO";
 208         }
 209 }
 210
 211 # If no platform is given, assume WIN32
 212 if ($W32 + $VMS + $linux == 0) {
 213         $W32 = 1;
 214 }
 215 die "Please, only one platform at a time"
 216     if ($W32 + $VMS + $linux > 1);
 217
 218 if (!$do_ssl && !$do_crypto)
 219         {
 220         print STDERR "usage: $0 ( ssl | crypto ) [ 16 | 32 | NT | OS2 | linux | VMS ]\n";
 221         exit(1);
 222         }
 223
 224 %ssl_list=&load_numbers($ssl_num);
 225 $max_ssl = $max_num;
 226 %crypto_list=&load_numbers($crypto_num);
 227 $max_crypto = $max_num;
 228
 229 my $ssl="include/openssl/ssl.h";
 230 $ssl.=" include/openssl/sslerr.h";
 231 $ssl.=" include/openssl/tls1.h";
 232 $ssl.=" include/openssl/srtp.h";
 233
 234 # When scanning include/openssl, skip all SSL files and some internal ones.
 235 my %skipthese;
 236 foreach my $f ( split(/\s+/, $ssl) ) {
 237     $skipthese{$f} = 1;
 238 }
 239 $skipthese{'include/openssl/conf_api.h'} = 1;
 240 $skipthese{'include/openssl/ebcdic.h'} = 1;
 241 $skipthese{'include/openssl/opensslconf.h'} = 1;
 242
 243 # We use headers found in include/openssl and include/internal only.
 244 # The latter is needed so libssl.so/.dll/.exe can link properly.
 245 my $crypto ="include/internal/dso.h";
 246 $crypto.=" include/internal/o_dir.h";
 247 $crypto.=" include/internal/o_str.h";
 248 $crypto.=" include/internal/err.h";
 249 foreach my $f ( glob(catfile($config{sourcedir},'include/openssl/*.h')) ) {
 250     my $fn = "include/openssl/" . lc(basename($f));
 251     $crypto .= " $fn" if !defined $skipthese{$fn} && $f !~ m@/[a-z]+err\.h$@;
 252 }
 253
 254 my $symhacks="include/openssl/symhacks.h";
 255
 256 my @ssl_symbols = &do_defs("LIBSSL", $ssl, $symhacks);
 257 my @crypto_symbols = &do_defs("LIBCRYPTO", $crypto, $symhacks);
 258
 259 if ($do_update) {
 260
 261 if ($do_ssl == 1) {
 262
 263         &maybe_add_info("LIBSSL",*ssl_list,@ssl_symbols);
 264         if ($do_rewrite == 1) {
 265                 open(OUT, ">$ssl_num");
 266                 &rewrite_numbers(*OUT,"LIBSSL",*ssl_list,@ssl_symbols);
 267         } else {
 268                 open(OUT, ">>$ssl_num");
 269         }
 270         &update_numbers(*OUT,"LIBSSL",*ssl_list,$max_ssl,@ssl_symbols);
 271         close OUT;
 272 }
 273
 274 if($do_crypto == 1) {
 275
 276         &maybe_add_info("LIBCRYPTO",*crypto_list,@crypto_symbols);
 277         if ($do_rewrite == 1) {
 278                 open(OUT, ">$crypto_num");
 279                 &rewrite_numbers(*OUT,"LIBCRYPTO",*crypto_list,@crypto_symbols);
 280         } else {
 281                 open(OUT, ">>$crypto_num");
 282         }
 283         &update_numbers(*OUT,"LIBCRYPTO",*crypto_list,$max_crypto,@crypto_symbols);
 284         close OUT;
 285 }
 286
 287 } elsif ($do_checkexist) {
 288         &check_existing(*ssl_list, @ssl_symbols)
 289                 if $do_ssl == 1;
 290         &check_existing(*crypto_list, @crypto_symbols)
 291                 if $do_crypto == 1;
 292 } elsif ($do_ctest || $do_ctestall) {
 293
 294         print <<"EOF";
 295
 296 /* Test file to check all DEF file symbols are present by trying
 297  * to link to all of them. This is *not* intended to be run!
 298  */
 299
 300 int main()
 301 {
 302 EOF
 303         &print_test_file(*STDOUT,"LIBSSL",*ssl_list,$do_ctestall,@ssl_symbols)
 304                 if $do_ssl == 1;
 305
 306         &print_test_file(*STDOUT,"LIBCRYPTO",*crypto_list,$do_ctestall,@crypto_symbols)
 307                 if $do_crypto == 1;
 308
 309         print "}\n";
 310
 311 } else {
 312
 313         &print_def_file(*STDOUT,$libname,*ssl_list,@ssl_symbols)
 314                 if $do_ssl == 1;
 315
 316         &print_def_file(*STDOUT,$libname,*crypto_list,@crypto_symbols)
 317                 if $do_crypto == 1;
 318
 319 }
 320
 321
 322 sub do_defs
 323 {
 324         my($name,$files,$symhacksfile)=@_;
 325         my $file;
 326         my @ret;
 327         my %syms;
 328         my %platform;           # For anything undefined, we assume ""
 329         my %kind;               # For anything undefined, we assume "FUNCTION"
 330         my %algorithm;          # For anything undefined, we assume ""
 331         my %variant;
 332         my %variant_cnt;        # To be able to allocate "name{n}" if "name"
 333                                 # is the same name as the original.
 334         my $cpp;
 335         my %unknown_algorithms = ();
 336         my $parens = 0;
 337
 338         foreach $file (split(/\s+/,$symhacksfile." ".$files))
 339                 {
 340                 my $fn = catfile($config{sourcedir},$file);
 341                 print STDERR "DEBUG: starting on $fn:\n" if $debug;
 342                 open(IN,"<$fn") || die "Can't open $fn, $!,";
 343                 my $line = "", my $def= "";
 344                 my %tag = (
 345                         (map { $_ => 0 } @known_platforms),
 346                         (map { "OPENSSL_SYS_".$_ => 0 } @known_ossl_platforms),
 347                         (map { "OPENSSL_NO_".$_ => 0 } @known_algorithms),
 348                         (map { "OPENSSL_USE_".$_ => 0 } @known_algorithms),
 349                         (grep /^DEPRECATED_/, @known_algorithms),
 350                         NOPROTO         => 0,
 351                         PERL5           => 0,
 352                         _WINDLL         => 0,
 353                         CONST_STRICT    => 0,
 354                         TRUE            => 1,
 355                 );
 356                 my $symhacking = $file eq $symhacksfile;
 357                 my @current_platforms = ();
 358                 my @current_algorithms = ();
 359
 360                 # params: symbol, alias, platforms, kind
 361                 # The reason to put this subroutine in a variable is that
 362                 # it will otherwise create it's own, unshared, version of
 363                 # %tag and %variant...
 364                 my $make_variant = sub
 365                 {
 366                         my ($s, $a, $p, $k) = @_;
 367                         my ($a1, $a2);
 368
 369                         print STDERR "DEBUG: make_variant: Entered with ",$s,", ",$a,", ",(defined($p)?$p:""),", ",(defined($k)?$k:""),"\n" if $debug;
 370                         if (defined($p))
 371                         {
 372                                 $a1 = join(",",$p,
 373                                            grep(!/^$/,
 374                                                 map { $tag{$_} == 1 ? $_ : "" }
 375                                                 @known_platforms));
 376                         }
 377                         else
 378                         {
 379                                 $a1 = join(",",
 380                                            grep(!/^$/,
 381                                                 map { $tag{$_} == 1 ? $_ : "" }
 382                                                 @known_platforms));
 383                         }
 384                         $a2 = join(",",
 385                                    grep(!/^$/,
 386                                         map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ : "" }
 387                                         @known_ossl_platforms));
 388                         print STDERR "DEBUG: make_variant: a1 = $a1; a2 = $a2\n" if $debug;
 389                         if ($a1 eq "") { $a1 = $a2; }
 390                         elsif ($a1 ne "" && $a2 ne "") { $a1 .= ",".$a2; }
 391                         if ($a eq $s)
 392                         {
 393                                 if (!defined($variant_cnt{$s}))
 394                                 {
 395                                         $variant_cnt{$s} = 0;
 396                                 }
 397                                 $variant_cnt{$s}++;
 398                                 $a .= "{$variant_cnt{$s}}";
 399                         }
 400                         my $toadd = $a.":".$a1.(defined($k)?":".$k:"");
 401                         my $togrep = $s.'(\{[0-9]+\})?:'.$a1.(defined($k)?":".$k:"");
 402                         if (!grep(/^$togrep$/,
 403                                   split(/;/, defined($variant{$s})?$variant{$s}:""))) {
 404                                 if (defined($variant{$s})) { $variant{$s} .= ";"; }
 405                                 $variant{$s} .= $toadd;
 406                         }
 407                         print STDERR "DEBUG: make_variant: Exit with variant of ",$s," = ",$variant{$s},"\n" if $debug;
 408                 };
 409
 410                 print STDERR "DEBUG: parsing ----------\n" if $debug;
 411                 while(<IN>) {
 412                         if($parens > 0) {
 413                                 #Inside a DEPRECATEDIN
 414                                 $stored_multiline .= $_;
 415                                 $stored_multiline =~ s|\R$||; # Better chomp
 416                                 print STDERR "DEBUG: Continuing multiline DEPRECATEDIN: $stored_multiline\n" if $debug;
 417                                 $parens = count_parens($stored_multiline);
 418                                 if ($parens == 0) {
 419                                         $def .= do_deprecated($stored_multiline,
 420                                                         \@current_platforms,
 421                                                         \@current_algorithms);
 422                                 }
 423                                 next;
 424                         }
 425                         if (/\/\* Error codes for the \w+ functions\. \*\//)
 426                                 {
 427                                 undef @tag;
 428                                 last;
 429                                 }
 430                         if ($line ne '') {
 431                                 $_ = $line . $_;
 432                                 $line = '';
 433                         }
 434
 435                         if (/\\$/) {
 436                                 $line = $`; # keep what was before the backslash
 437                                 next;
 438                         }
 439
 440                         if(/\/\*/) {
 441                                 if (not /\*\//) {       # multiline comment...
 442                                         $line = $_;     # ... just accumulate
 443                                         next;
 444                                 } else {
 445                                         s/\/\*.*?\*\///gs;# wipe it
 446                                 }
 447                         }
 448
 449                         if ($cpp) {
 450                                 $cpp++ if /^#\s*if/;
 451                                 $cpp-- if /^#\s*endif/;
 452                                 next;
 453                         }
 454                         if (/^#.*ifdef.*cplusplus/) {
 455                                 $cpp = 1;
 456                                 next;
 457                         }
 458
 459                         s/{[^{}]*}//gs;                      # ignore {} blocks
 460                         print STDERR "DEBUG: \$def=\"$def\"\n" if $debug && $def ne "";
 461                         print STDERR "DEBUG: \$_=\"$_\"\n" if $debug;
 462                         if (/^\#\s*if\s+OPENSSL_API_COMPAT\s*(\S)\s*(0x[0-9a-fA-F]{8})L\s*$/) {
 463                                 my $op = $1;
 464                                 my $v = hex($2);
 465                                 if ($op ne '<' && $op ne '>=') {
 466                                     die "$file unacceptable operator $op: $_\n";
 467                                 }
 468                                 my ($one, $major, $minor) =
 469                                     ( ($v >> 28) & 0xf,
 470                                       ($v >> 20) & 0xff,
 471                                       ($v >> 12) & 0xff );
 472                                 my $t = "DEPRECATEDIN_${one}_${major}_${minor}";
 473                                 push(@tag,"-");
 474                                 push(@tag,$t);
 475                                 $tag{$t}=($op eq '<' ? 1 : -1);
 476                                 print STDERR "DEBUG: $file: found tag $t = $tag{$t}\n" if $debug;
 477                         } elsif (/^\#\s*ifndef\s+(.*)/) {
 478                                 push(@tag,"-");
 479                                 push(@tag,$1);
 480                                 $tag{$1}=-1;
 481                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
 482                         } elsif (/^\#\s*if\s+!defined\(([^\)]+)\)/) {
 483                                 push(@tag,"-");
 484                                 if (/^\#\s*if\s+(!defined\(([^\)]+)\)(\s+\&\&\s+!defined\(([^\)]+)\))*)$/) {
 485                                         my $tmp_1 = $1;
 486                                         my $tmp_;
 487                                         foreach $tmp_ (split '\&\&',$tmp_1) {
 488                                                 $tmp_ =~ /!defined\(([^\)]+)\)/;
 489                                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
 490                                                 push(@tag,$1);
 491                                                 $tag{$1}=-1;
 492                                         }
 493                                 } else {
 494                                         print STDERR "Warning: $file: complicated expression: $_" if $debug; # because it is O...
 495                                         print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
 496                                         push(@tag,$1);
 497                                         $tag{$1}=-1;
 498                                 }
 499                         } elsif (/^\#\s*ifdef\s+(\S*)/) {
 500                                 push(@tag,"-");
 501                                 push(@tag,$1);
 502                                 $tag{$1}=1;
 503                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
 504                         } elsif (/^\#\s*if\s+defined\(([^\)]+)\)/) {
 505                                 push(@tag,"-");
 506                                 if (/^\#\s*if\s+(defined\(([^\)]+)\)(\s+\|\|\s+defined\(([^\)]+)\))*)$/) {
 507                                         my $tmp_1 = $1;
 508                                         my $tmp_;
 509                                         foreach $tmp_ (split '\|\|',$tmp_1) {
 510                                                 $tmp_ =~ /defined\(([^\)]+)\)/;
 511                                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
 512                                                 push(@tag,$1);
 513                                                 $tag{$1}=1;
 514                                         }
 515                                 } else {
 516                                         print STDERR "Warning: $file: complicated expression: $_\n" if $debug; # because it is O...
 517                                         print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
 518                                         push(@tag,$1);
 519                                         $tag{$1}=1;
 520                                 }
 521                         } elsif (/^\#\s*error\s+(\w+) is disabled\./) {
 522                                 my $tag_i = $#tag;
 523                                 while($tag[$tag_i] ne "-") {
 524                                         if ($tag[$tag_i] eq "OPENSSL_NO_".$1) {
 525                                                 $tag{$tag[$tag_i]}=2;
 526                                                 print STDERR "DEBUG: $file: chaged tag $1 = 2\n" if $debug;
 527                                         }
 528                                         $tag_i--;
 529                                 }
 530                         } elsif (/^\#\s*endif/) {
 531                                 my $tag_i = $#tag;
 532                                 while($tag_i > 0 && $tag[$tag_i] ne "-") {
 533                                         my $t=$tag[$tag_i];
 534                                         print STDERR "DEBUG: \$t=\"$t\"\n" if $debug;
 535                                         if ($tag{$t}==2) {
 536                                                 $tag{$t}=-1;
 537                                         } else {
 538                                                 $tag{$t}=0;
 539                                         }
 540                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
 541                                         pop(@tag);
 542                                         if ($t =~ /^OPENSSL_NO_([A-Z0-9_]+)$/) {
 543                                                 $t=$1;
 544                                         } elsif($t =~ /^OPENSSL_USE_([A-Z0-9_]+)$/) {
 545                                                 $t=$1;
 546                                         } else {
 547                                                 $t="";
 548                                         }
 549                                         if ($t ne ""
 550                                             && !grep(/^$t$/, @known_algorithms)) {
 551                                                 $unknown_algorithms{$t} = 1;
 552                                                 #print STDERR "DEBUG: Added as unknown algorithm: $t\n" if $debug;
 553                                         }
 554                                         $tag_i--;
 555                                 }
 556                                 pop(@tag);
 557                         } elsif (/^\#\s*else/) {
 558                                 my $tag_i = $#tag;
 559                                 die "$file unmatched else\n" if $tag_i < 0;
 560                                 while($tag[$tag_i] ne "-") {
 561                                         my $t=$tag[$tag_i];
 562                                         $tag{$t}= -$tag{$t};
 563                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
 564                                         $tag_i--;
 565                                 }
 566                         } elsif (/^\#\s*if\s+1/) {
 567                                 push(@tag,"-");
 568                                 # Dummy tag
 569                                 push(@tag,"TRUE");
 570                                 $tag{"TRUE"}=1;
 571                                 print STDERR "DEBUG: $file: found 1\n" if $debug;
 572                         } elsif (/^\#\s*if\s+0/) {
 573                                 push(@tag,"-");
 574                                 # Dummy tag
 575                                 push(@tag,"TRUE");
 576                                 $tag{"TRUE"}=-1;
 577                                 print STDERR "DEBUG: $file: found 0\n" if $debug;
 578                         } elsif (/^\#\s*if\s+/) {
 579                                 #Some other unrecognized "if" style
 580                                 push(@tag,"-");
 581                         } elsif (/^\#\s*define\s+(\w+)\s+(\w+)/
 582                                  && $symhacking && $tag{'TRUE'} != -1) {
 583                                 # This is for aliasing.  When we find an alias,
 584                                 # we have to invert
 585                                 &$make_variant($1,$2);
 586                                 print STDERR "DEBUG: $file: defined $1 = $2\n" if $debug;
 587                         }
 588                         if (/^\#/) {
 589                                 @current_platforms =
 590                                     grep(!/^$/,
 591                                          map { $tag{$_} == 1 ? $_ :
 592                                                    $tag{$_} == -1 ? "!".$_  : "" }
 593                                          @known_platforms);
 594                                 push @current_platforms
 595                                     , grep(!/^$/,
 596                                            map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ :
 597                                                      $tag{"OPENSSL_SYS_".$_} == -1 ? "!".$_  : "" }
 598                                            @known_ossl_platforms);
 599                                 @current_algorithms = ();
 600                                 @current_algorithms =
 601                                     grep(!/^$/,
 602                                          map { $tag{"OPENSSL_NO_".$_} == -1 ? $_ : "" }
 603                                          @known_algorithms);
 604                                 push @current_algorithms
 605                                     , grep(!/^$/,
 606                                          map { $tag{"OPENSSL_USE_".$_} == 1 ? $_ : "" }
 607                                          @known_algorithms);
 608                                 push @current_algorithms,
 609                                     grep { /^DEPRECATEDIN_/ && $tag{$_} == 1 }
 610                                     @known_algorithms;
 611                                 $def .=
 612                                     "#INFO:"
 613                                         .join(',',@current_platforms).":"
 614                                             .join(',',@current_algorithms).";";
 615                                 next;
 616                         }
 617                         if ($tag{'TRUE'} != -1) {
 618                                 if (/^\s*DEFINE_STACK_OF\s*\(\s*(\w*)\s*\)/
 619                                                 || /^\s*DEFINE_STACK_OF_CONST\s*\(\s*(\w*)\s*\)/) {
 620                                         next;
 621                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 622                                         $def .= "int d2i_$3(void);";
 623                                         $def .= "int i2d_$3(void);";
 624                                         # Variant for platforms that do not
 625                                         # have to access globale variables
 626                                         # in shared libraries through functions
 627                                         $def .=
 628                                             "#INFO:"
 629                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 630                                                     .join(',',@current_algorithms).";";
 631                                         $def .= "OPENSSL_EXTERN int $2_it;";
 632                                         $def .=
 633                                             "#INFO:"
 634                                                 .join(',',@current_platforms).":"
 635                                                     .join(',',@current_algorithms).";";
 636                                         # Variant for platforms that have to
 637                                         # access globale variables in shared
 638                                         # libraries through functions
 639                                         &$make_variant("$2_it","$2_it",
 640                                                       "EXPORT_VAR_AS_FUNCTION",
 641                                                       "FUNCTION");
 642                                         next;
 643                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_fname\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 644                                         $def .= "int d2i_$3(void);";
 645                                         $def .= "int i2d_$3(void);";
 646                                         $def .= "int $3_free(void);";
 647                                         $def .= "int $3_new(void);";
 648                                         # Variant for platforms that do not
 649                                         # have to access globale variables
 650                                         # in shared libraries through functions
 651                                         $def .=
 652                                             "#INFO:"
 653                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 654                                                     .join(',',@current_algorithms).";";
 655                                         $def .= "OPENSSL_EXTERN int $2_it;";
 656                                         $def .=
 657                                             "#INFO:"
 658                                                 .join(',',@current_platforms).":"
 659                                                     .join(',',@current_algorithms).";";
 660                                         # Variant for platforms that have to
 661                                         # access globale variables in shared
 662                                         # libraries through functions
 663                                         &$make_variant("$2_it","$2_it",
 664                                                       "EXPORT_VAR_AS_FUNCTION",
 665                                                       "FUNCTION");
 666                                         next;
 667                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS\s*\(\s*(\w*)\s*\)/ ||
 668                                          /^\s*DECLARE_ASN1_FUNCTIONS_const\s*\(\s*(\w*)\s*\)/) {
 669                                         $def .= "int d2i_$1(void);";
 670                                         $def .= "int i2d_$1(void);";
 671                                         $def .= "int $1_free(void);";
 672                                         $def .= "int $1_new(void);";
 673                                         # Variant for platforms that do not
 674                                         # have to access globale variables
 675                                         # in shared libraries through functions
 676                                         $def .=
 677                                             "#INFO:"
 678                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 679                                                     .join(',',@current_algorithms).";";
 680                                         $def .= "OPENSSL_EXTERN int $1_it;";
 681                                         $def .=
 682                                             "#INFO:"
 683                                                 .join(',',@current_platforms).":"
 684                                                     .join(',',@current_algorithms).";";
 685                                         # Variant for platforms that have to
 686                                         # access globale variables in shared
 687                                         # libraries through functions
 688                                         &$make_variant("$1_it","$1_it",
 689                                                       "EXPORT_VAR_AS_FUNCTION",
 690                                                       "FUNCTION");
 691                                         next;
 692                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS_const\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 693                                         $def .= "int d2i_$2(void);";
 694                                         $def .= "int i2d_$2(void);";
 695                                         # Variant for platforms that do not
 696                                         # have to access globale variables
 697                                         # in shared libraries through functions
 698                                         $def .=
 699                                             "#INFO:"
 700                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 701                                                     .join(',',@current_algorithms).";";
 702                                         $def .= "OPENSSL_EXTERN int $2_it;";
 703                                         $def .=
 704                                             "#INFO:"
 705                                                 .join(',',@current_platforms).":"
 706                                                     .join(',',@current_algorithms).";";
 707                                         # Variant for platforms that have to
 708                                         # access globale variables in shared
 709                                         # libraries through functions
 710                                         &$make_variant("$2_it","$2_it",
 711                                                       "EXPORT_VAR_AS_FUNCTION",
 712                                                       "FUNCTION");
 713                                         next;
 714                                 } elsif (/^\s*DECLARE_ASN1_ALLOC_FUNCTIONS\s*\(\s*(\w*)\s*\)/) {
 715                                         $def .= "int $1_free(void);";
 716                                         $def .= "int $1_new(void);";
 717                                         next;
 718                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 719                                         $def .= "int d2i_$2(void);";
 720                                         $def .= "int i2d_$2(void);";
 721                                         $def .= "int $2_free(void);";
 722                                         $def .= "int $2_new(void);";
 723                                         # Variant for platforms that do not
 724                                         # have to access globale variables
 725                                         # in shared libraries through functions
 726                                         $def .=
 727                                             "#INFO:"
 728                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 729                                                     .join(',',@current_algorithms).";";
 730                                         $def .= "OPENSSL_EXTERN int $2_it;";
 731                                         $def .=
 732                                             "#INFO:"
 733                                                 .join(',',@current_platforms).":"
 734                                                     .join(',',@current_algorithms).";";
 735                                         # Variant for platforms that have to
 736                                         # access globale variables in shared
 737                                         # libraries through functions
 738                                         &$make_variant("$2_it","$2_it",
 739                                                       "EXPORT_VAR_AS_FUNCTION",
 740                                                       "FUNCTION");
 741                                         next;
 742                                 } elsif (/^\s*DECLARE_ASN1_ITEM\s*\(\s*(\w*)\s*\)/) {
 743                                         # Variant for platforms that do not
 744                                         # have to access globale variables
 745                                         # in shared libraries through functions
 746                                         $def .=
 747                                             "#INFO:"
 748                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 749                                                     .join(',',@current_algorithms).";";
 750                                         $def .= "OPENSSL_EXTERN int $1_it;";
 751                                         $def .=
 752                                             "#INFO:"
 753                                                 .join(',',@current_platforms).":"
 754                                                     .join(',',@current_algorithms).";";
 755                                         # Variant for platforms that have to
 756                                         # access globale variables in shared
 757                                         # libraries through functions
 758                                         &$make_variant("$1_it","$1_it",
 759                                                       "EXPORT_VAR_AS_FUNCTION",
 760                                                       "FUNCTION");
 761                                         next;
 762                                 } elsif (/^\s*DECLARE_ASN1_NDEF_FUNCTION\s*\(\s*(\w*)\s*\)/) {
 763                                         $def .= "int i2d_$1_NDEF(void);";
 764                                 } elsif (/^\s*DECLARE_ASN1_SET_OF\s*\(\s*(\w*)\s*\)/) {
 765                                         next;
 766                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION\s*\(\s*(\w*)\s*\)/) {
 767                                         $def .= "int $1_print_ctx(void);";
 768                                         next;
 769                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 770                                         $def .= "int $2_print_ctx(void);";
 771                                         next;
 772                                 } elsif (/^\s*DECLARE_PKCS12_STACK_OF\s*\(\s*(\w*)\s*\)/) {
 773                                         next;
 774                                 } elsif (/^DECLARE_PEM_rw\s*\(\s*(\w*)\s*,/ ||
 775                                          /^DECLARE_PEM_rw_cb\s*\(\s*(\w*)\s*,/ ||
 776                                          /^DECLARE_PEM_rw_const\s*\(\s*(\w*)\s*,/ ) {
 777                                         $def .=
 778                                             "#INFO:"
 779                                                 .join(',',@current_platforms).":"
 780                                                     .join(',',"STDIO",@current_algorithms).";";
 781                                         $def .= "int PEM_read_$1(void);";
 782                                         $def .= "int PEM_write_$1(void);";
 783                                         $def .=
 784                                             "#INFO:"
 785                                                 .join(',',@current_platforms).":"
 786                                                     .join(',',@current_algorithms).";";
 787                                         # Things that are everywhere
 788                                         $def .= "int PEM_read_bio_$1(void);";
 789                                         $def .= "int PEM_write_bio_$1(void);";
 790                                         next;
 791                                 } elsif (/^DECLARE_PEM_write\s*\(\s*(\w*)\s*,/ ||
 792                                         /^DECLARE_PEM_write_const\s*\(\s*(\w*)\s*,/ ||
 793                                          /^DECLARE_PEM_write_cb\s*\(\s*(\w*)\s*,/ ) {
 794                                         $def .=
 795                                             "#INFO:"
 796                                                 .join(',',@current_platforms).":"
 797                                                     .join(',',"STDIO",@current_algorithms).";";
 798                                         $def .= "int PEM_write_$1(void);";
 799                                         $def .=
 800                                             "#INFO:"
 801                                                 .join(',',@current_platforms).":"
 802                                                     .join(',',@current_algorithms).";";
 803                                         # Things that are everywhere
 804                                         $def .= "int PEM_write_bio_$1(void);";
 805                                         next;
 806                                 } elsif (/^DECLARE_PEM_read\s*\(\s*(\w*)\s*,/ ||
 807                                          /^DECLARE_PEM_read_cb\s*\(\s*(\w*)\s*,/ ) {
 808                                         $def .=
 809                                             "#INFO:"
 810                                                 .join(',',@current_platforms).":"
 811                                                     .join(',',"STDIO",@current_algorithms).";";
 812                                         $def .= "int PEM_read_$1(void);";
 813                                         $def .=
 814                                             "#INFO:"
 815                                                 .join(',',@current_platforms).":"
 816                                                     .join(',',"STDIO",@current_algorithms).";";
 817                                         # Things that are everywhere
 818                                         $def .= "int PEM_read_bio_$1(void);";
 819                                         next;
 820                                 } elsif (/^OPENSSL_DECLARE_GLOBAL\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
 821                                         # Variant for platforms that do not
 822                                         # have to access globale variables
 823                                         # in shared libraries through functions
 824                                         $def .=
 825                                             "#INFO:"
 826                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
 827                                                     .join(',',@current_algorithms).";";
 828                                         $def .= "OPENSSL_EXTERN int _shadow_$2;";
 829                                         $def .=
 830                                             "#INFO:"
 831                                                 .join(',',@current_platforms).":"
 832                                                     .join(',',@current_algorithms).";";
 833                                         # Variant for platforms that have to
 834                                         # access globale variables in shared
 835                                         # libraries through functions
 836                                         &$make_variant("_shadow_$2","_shadow_$2",
 837                                                       "EXPORT_VAR_AS_FUNCTION",
 838                                                       "FUNCTION");
 839                                 } elsif (/^\s*DEPRECATEDIN/) {
 840                                         $parens = count_parens($_);
 841                                         if ($parens == 0) {
 842                                                 $def .= do_deprecated($_,
 843                                                         \@current_platforms,
 844                                                         \@current_algorithms);
 845                                         } else {
 846                                                 $stored_multiline = $_;
 847                                                 $stored_multiline =~ s|\R$||;
 848                                                 print STDERR "DEBUG: Found multiline DEPRECATEDIN starting with: $stored_multiline\n" if $debug;
 849                                                 next;
 850                                         }
 851                                 } elsif ($tag{'CONST_STRICT'} != 1) {
 852                                         if (/\{|\/\*|\([^\)]*$/) {
 853                                                 $line = $_;
 854                                         } else {
 855                                                 $def .= $_;
 856                                         }
 857                                 }
 858                         }
 859                 }
 860                 close(IN);
 861                 die "$file: Unmatched tags\n" if $#tag >= 0;
 862
 863                 my $algs;
 864                 my $plays;
 865
 866                 print STDERR "DEBUG: postprocessing ----------\n" if $debug;
 867                 foreach (split /;/, $def) {
 868                         my $s; my $k = "FUNCTION"; my $p; my $a;
 869                         s/^[\n\s]*//g;
 870                         s/[\n\s]*$//g;
 871                         next if(/\#undef/);
 872                         next if(/typedef\W/);
 873                         next if(/\#define/);
 874
 875                         # Reduce argument lists to empty ()
 876                         # fold round brackets recursively: (t(*v)(t),t) -> (t{}{},t) -> {}
 877                         while(/\(.*\)/s) {
 878                                 s/\([^\(\)]+\)/\{\}/gs;
 879                                 s/\(\s*\*\s*(\w+)\s*\{\}\s*\)/$1/gs;    #(*f{}) -> f
 880                         }
 881                         # pretend as we didn't use curly braces: {} -> ()
 882                         s/\{\}/\(\)/gs;
 883
 884                         s/STACK_OF\(\)/void/gs;
 885                         s/LHASH_OF\(\)/void/gs;
 886
 887                         print STDERR "DEBUG: \$_ = \"$_\"\n" if $debug;
 888                         if (/^\#INFO:([^:]*):(.*)$/) {
 889                                 $plats = $1;
 890                                 $algs = $2;
 891                                 print STDERR "DEBUG: found info on platforms ($plats) and algorithms ($algs)\n" if $debug;
 892                                 next;
 893                         } elsif (/^\s*OPENSSL_EXTERN\s.*?(\w+(\{[0-9]+\})?)(\[[0-9]*\])*\s*$/) {
 894                                 $s = $1;
 895                                 $k = "VARIABLE";
 896                                 print STDERR "DEBUG: found external variable $s\n" if $debug;
 897                         } elsif (/TYPEDEF_\w+_OF/s) {
 898                                 next;
 899                         } elsif (/(\w+)\s*\(\).*/s) {   # first token prior [first] () is
 900                                 $s = $1;                # a function name!
 901                                 print STDERR "DEBUG: found function $s\n" if $debug;
 902                         } elsif (/\(/ and not (/=/)) {
 903                                 print STDERR "File $file: cannot parse: $_;\n";
 904                                 next;
 905                         } else {
 906                                 next;
 907                         }
 908
 909                         $syms{$s} = 1;
 910                         $kind{$s} = $k;
 911
 912                         $p = $plats;
 913                         $a = $algs;
 914
 915                         $platform{$s} =
 916                             &reduce_platforms((defined($platform{$s})?$platform{$s}.',':"").$p);
 917                         $algorithm{$s} .= ','.$a;
 918
 919                         if (defined($variant{$s})) {
 920                                 foreach $v (split /;/,$variant{$s}) {
 921                                         (my $r, my $p, my $k) = split(/:/,$v);
 922                                         my $ip = join ',',map({ /^!(.*)$/ ? $1 : "!".$_ } split /,/, $p);
 923                                         $syms{$r} = 1;
 924                                         if (!defined($k)) { $k = $kind{$s}; }
 925                                         $kind{$r} = $k."(".$s.")";
 926                                         $algorithm{$r} = $algorithm{$s};
 927                                         $platform{$r} = &reduce_platforms($platform{$s}.",".$p.",".$p);
 928                                         $platform{$s} = &reduce_platforms($platform{$s}.','.$ip.','.$ip);
 929                                         print STDERR "DEBUG: \$variant{\"$s\"} = ",$v,"; \$r = $r; \$p = ",$platform{$r},"; \$a = ",$algorithm{$r},"; \$kind = ",$kind{$r},"\n" if $debug;
 930                                 }
 931                         }
 932                         print STDERR "DEBUG: \$s = $s; \$p = ",$platform{$s},"; \$a = ",$algorithm{$s},"; \$kind = ",$kind{$s},"\n" if $debug;
 933                 }
 934         }
 935
 936         # Prune the returned symbols
 937
 938         delete $syms{"bn_dump1"};
 939         $platform{"BIO_s_log"} .= ",!WIN32,!macintosh";
 940
 941         $platform{"PEM_read_NS_CERT_SEQ"} = "VMS";
 942         $platform{"PEM_write_NS_CERT_SEQ"} = "VMS";
 943         $platform{"PEM_read_P8_PRIV_KEY_INFO"} = "VMS";
 944         $platform{"PEM_write_P8_PRIV_KEY_INFO"} = "VMS";
 945
 946         # Info we know about
 947
 948         push @ret, map { $_."\\".&info_string($_,"EXIST",
 949                                               $platform{$_},
 950                                               $kind{$_},
 951                                               $algorithm{$_}) } keys %syms;
 952
 953         if (keys %unknown_algorithms) {
 954                 print STDERR "WARNING: mkdef.pl doesn't know the following algorithms:\n";
 955                 print STDERR "\t",join("\n\t",keys %unknown_algorithms),"\n";
 956         }
 957         return(@ret);
 958 }
 959
 960 # Param: string of comma-separated platform-specs.
 961 sub reduce_platforms
 962 {
 963         my ($platforms) = @_;
 964         my $pl = defined($platforms) ? $platforms : "";
 965         my %p = map { $_ => 0 } split /,/, $pl;
 966         my $ret;
 967
 968         print STDERR "DEBUG: Entered reduce_platforms with \"$platforms\"\n"
 969             if $debug;
 970         # We do this, because if there's code like the following, it really
 971         # means the function exists in all cases and should therefore be
 972         # everywhere.  By increasing and decreasing, we may attain 0:
 973         #
 974         # ifndef WIN16
 975         #    int foo();
 976         # else
 977         #    int _fat foo();
 978         # endif
 979         foreach $platform (split /,/, $pl) {
 980                 if ($platform =~ /^!(.*)$/) {
 981                         $p{$1}--;
 982                 } else {
 983                         $p{$platform}++;
 984                 }
 985         }
 986         foreach $platform (keys %p) {
 987                 if ($p{$platform} == 0) { delete $p{$platform}; }
 988         }
 989
 990         delete $p{""};
 991
 992         $ret = join(',',sort(map { $p{$_} < 0 ? "!".$_ : $_ } keys %p));
 993         print STDERR "DEBUG: Exiting reduce_platforms with \"$ret\"\n"
 994             if $debug;
 995         return $ret;
 996 }
 997
 998 sub info_string
 999 {
1000         (my $symbol, my $exist, my $platforms, my $kind, my $algorithms) = @_;
1001
1002         my %a = defined($algorithms) ?
1003             map { $_ => 1 } split /,/, $algorithms : ();
1004         my $k = defined($kind) ? $kind : "FUNCTION";
1005         my $ret;
1006         my $p = &reduce_platforms($platforms);
1007
1008         delete $a{""};
1009
1010         $ret = $exist;
1011         $ret .= ":".$p;
1012         $ret .= ":".$k;
1013         $ret .= ":".join(',',sort keys %a);
1014         return $ret;
1015 }
1016
1017 sub maybe_add_info
1018 {
1019         (my $name, *nums, my @symbols) = @_;
1020         my $sym;
1021         my $new_info = 0;
1022         my %syms=();
1023
1024         foreach $sym (@symbols) {
1025                 (my $s, my $i) = split /\\/, $sym;
1026                 if (defined($nums{$s})) {
1027                         $i =~ s/^(.*?:.*?:\w+)(\(\w+\))?/$1/;
1028                         (my $n, my $vers, my $dummy) = split /\\/, $nums{$s};
1029                         if (!defined($dummy) || $i ne $dummy) {
1030                                 $nums{$s} = $n."\\".$vers."\\".$i;
1031                                 $new_info++;
1032                                 print STDERR "DEBUG: maybe_add_info for $s: \"$dummy\" => \"$i\"\n" if $debug;
1033                         }
1034                 }
1035                 $syms{$s} = 1;
1036         }
1037
1038         my @s=sort { &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n") } keys %nums;
1039         foreach $sym (@s) {
1040                 (my $n, my $vers, my $i) = split /\\/, $nums{$sym};
1041                 if (!defined($syms{$sym}) && $i !~ /^NOEXIST:/) {
1042                         $new_info++;
1043                         print STDERR "DEBUG: maybe_add_info for $sym: -> undefined\n" if $debug;
1044                 }
1045         }
1046         if ($new_info) {
1047                 print STDERR "$name: $new_info old symbols have updated info\n";
1048                 if (!$do_rewrite) {
1049                         print STDERR "You should do a rewrite to fix this.\n";
1050                 }
1051         } else {
1052         }
1053 }
1054
1055 # Param: string of comma-separated keywords, each possibly prefixed with a "!"
1056 sub is_valid
1057 {
1058         my ($keywords_txt,$platforms) = @_;
1059         my (@keywords) = split /,/,$keywords_txt;
1060         my ($falsesum, $truesum) = (0, 1);
1061
1062         # Param: one keyword
1063         sub recognise
1064         {
1065                 my ($keyword,$platforms) = @_;
1066
1067                 if ($platforms) {
1068                         # platforms
1069                         if ($keyword eq "UNIX" && $UNIX) { return 1; }
1070                         if ($keyword eq "VMS" && $VMS) { return 1; }
1071                         if ($keyword eq "WIN32" && $W32) { return 1; }
1072                         if ($keyword eq "_WIN32" && $W32) { return 1; }
1073                         if ($keyword eq "WINNT" && $NT) { return 1; }
1074                         # Special platforms:
1075                         # EXPORT_VAR_AS_FUNCTION means that global variables
1076                         # will be represented as functions.
1077                         if ($keyword eq "EXPORT_VAR_AS_FUNCTION" && $W32) {
1078                                 return 1;
1079                         }
1080                         if ($keyword eq "ZLIB" && $zlib) { return 1; }
1081                         return 0;
1082                 } else {
1083                         # algorithms
1084                         if ($disabled_algorithms{$keyword} == 1) { return 0;}
1085
1086                         # Nothing recognise as true
1087                         return 1;
1088                 }
1089         }
1090
1091         foreach $k (@keywords) {
1092                 if ($k =~ /^!(.*)$/) {
1093                         $falsesum += &recognise($1,$platforms);
1094                 } else {
1095                         $truesum *= &recognise($k,$platforms);
1096                 }
1097         }
1098         print STDERR "DEBUG: [",$#keywords,",",$#keywords < 0,"] is_valid($keywords_txt) => (\!$falsesum) && $truesum = ",(!$falsesum) && $truesum,"\n" if $debug;
1099         return (!$falsesum) && $truesum;
1100 }
1101
1102 sub print_test_file
1103 {
1104         (*OUT,my $name,*nums,my $testall,my @symbols)=@_;
1105         my $n = 1; my @e; my @r;
1106         my $sym; my $prev = ""; my $prefSSLeay;
1107
1108         (@e)=grep(/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1109         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:.*/ && !/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1110         @symbols=((sort @e),(sort @r));
1111
1112         foreach $sym (@symbols) {
1113                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1114                 my $v = 0;
1115                 $v = 1 if $i=~ /^.*?:.*?:VARIABLE/;
1116                 my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1117                 my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1118                 if (!defined($nums{$s})) {
1119                         print STDERR "Warning: $s does not have a number assigned\n"
1120                             if(!$do_update);
1121                 } elsif (is_valid($p,1) && is_valid($a,0)) {
1122                         my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1123                         if ($prev eq $s2) {
1124                                 print OUT "\t/* The following has already appeared previously */\n";
1125                                 print STDERR "Warning: Symbol '",$s2,"' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1126                         }
1127                         $prev = $s2;    # To warn about duplicates...
1128
1129                         (my $nn, my $vers, my $ni) = split /\\/, $nums{$s2};
1130                         if ($v) {
1131                                 print OUT "\textern int $s2; /* type unknown */ /* $nn $ni */\n";
1132                         } else {
1133                                 print OUT "\textern int $s2(); /* type unknown */ /* $nn $ni */\n";
1134                         }
1135                 }
1136         }
1137 }
1138
1139 sub get_version
1140 {
1141    return $config{version};
1142 }
1143
1144 sub print_def_file
1145 {
1146         (*OUT,my $name,*nums,my @symbols)=@_;
1147         my $n = 1; my @e; my @r; my @v; my $prev="";
1148         my $liboptions="";
1149         my $libname = $name;
1150         my $http_vendor = 'www.openssl.org/';
1151         my $version = get_version();
1152         my $what = "OpenSSL: implementation of Secure Socket Layer";
1153         my $description = "$what $version, $name - http://$http_vendor";
1154         my $prevsymversion = "", $prevprevsymversion = "";
1155         # For VMS
1156         my $prevnum = 0;
1157         my $symvtextcount = 0;
1158
1159         if ($W32)
1160                 { $libname.="32"; }
1161
1162         if ($W32)
1163                 {
1164                 print OUT <<"EOF";
1165 ;
1166 ; Definition file for the DLL version of the $name library from OpenSSL
1167 ;
1168
1169 LIBRARY         $libname        $liboptions
1170
1171 EOF
1172
1173                 print "EXPORTS\n";
1174                 }
1175         elsif ($VMS)
1176                 {
1177                 print OUT <<"EOF";
1178 CASE_SENSITIVE=YES
1179 SYMBOL_VECTOR=(-
1180 EOF
1181                 $symvtextcount = 16; # length of "SYMBOL_VECTOR=(-"
1182                 }
1183
1184         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:FUNCTION/,@symbols);
1185         (@v)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:VARIABLE/,@symbols);
1186         if ($VMS) {
1187             # VMS needs to have the symbols on slot number order
1188             @symbols=(map { $_->[1] }
1189                       sort { $a->[0] <=> $b->[0] }
1190                       map { (my $s, my $i) = $_ =~ /^(.*?)\\(.*)$/;
1191                             die "Error: $s doesn't have a number assigned\n"
1192                                 if !defined($nums{$s});
1193                             (my $n, my @rest) = split /\\/, $nums{$s};
1194                             [ $n, $_ ] } (@e, @r, @v));
1195         } else {
1196             @symbols=((sort @e),(sort @r), (sort @v));
1197         }
1198
1199         my ($baseversion, $currversion) = get_openssl_version();
1200         my $thisversion;
1201         do {
1202                 if (!defined($thisversion)) {
1203                         $thisversion = $baseversion;
1204                 } else {
1205                         $thisversion = get_next_version($thisversion);
1206                 }
1207                 foreach $sym (@symbols) {
1208                         (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1209                         my $v = 0;
1210                         $v = 1 if $i =~ /^.*?:.*?:VARIABLE/;
1211                         if (!defined($nums{$s})) {
1212                                 die "Error: $s does not have a number assigned\n"
1213                                         if(!$do_update);
1214                         } else {
1215                                 (my $n, my $symversion, my $dummy) = split /\\/, $nums{$s};
1216                                 my %pf = ();
1217                                 my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1218                                 my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1219                                 if (is_valid($p,1) && is_valid($a,0)) {
1220                                         my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1221                                         if ($prev eq $s2) {
1222                                                 print STDERR "Warning: Symbol '",$s2,
1223                                                         "' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),
1224                                                         ", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1225                                         }
1226                                         $prev = $s2;    # To warn about duplicates...
1227                                         if($linux) {
1228                                                 next if $symversion ne $thisversion;
1229                                                 if ($symversion ne $prevsymversion) {
1230                                                         if ($prevsymversion ne "") {
1231                                                                 if ($prevprevsymversion ne "") {
1232                                                                         print OUT "} OPENSSL_"
1233                                                                                                 ."$prevprevsymversion;\n\n";
1234                                                                 } else {
1235                                                                         print OUT "};\n\n";
1236                                                                 }
1237                                                         }
1238                                                         print OUT "OPENSSL_$symversion {\n    global:\n";
1239                                                         $prevprevsymversion = $prevsymversion;
1240                                                         $prevsymversion = $symversion;
1241                                                 }
1242                                                 print OUT "        $s2;\n";
1243                                         } elsif ($VMS) {
1244                                             while(++$prevnum < $n) {
1245                                                 my $symline=" ,SPARE -\n  ,SPARE -\n";
1246                                                 if ($symvtextcount + length($symline) - 2 > 1024) {
1247                                                     print OUT ")\nSYMBOL_VECTOR=(-\n";
1248                                                     $symvtextcount = 16; # length of "SYMBOL_VECTOR=(-"
1249                                                 }
1250                                                 if ($symvtextcount == 16) {
1251                                                     # Take away first comma
1252                                                     $symline =~ s/,//;
1253                                                 }
1254                                                 print OUT $symline;
1255                                                 $symvtextcount += length($symline) - 2;
1256                                             }
1257                                             (my $s_uc = $s) =~ tr/a-z/A-Z/;
1258                                             my $symtype=
1259                                                 $v ? "DATA" : "PROCEDURE";
1260                                             my $symline=
1261                                                 ($s_uc ne $s
1262                                                  ? " ,$s_uc/$s=$symtype -\n  ,$s=$symtype -\n"
1263                                                  : " ,$s=$symtype -\n  ,SPARE -\n");
1264                                             if ($symvtextcount + length($symline) - 2 > 1024) {
1265                                                 print OUT ")\nSYMBOL_VECTOR=(-\n";
1266                                                 $symvtextcount = 16; # length of "SYMBOL_VECTOR=(-"
1267                                             }
1268                                             if ($symvtextcount == 16) {
1269                                                 # Take away first comma
1270                                                 $symline =~ s/,//;
1271                                             }
1272                                             print OUT $symline;
1273                                             $symvtextcount += length($symline) - 2;
1274                                         } elsif($v) {
1275                                                 printf OUT "    %s%-39s DATA\n",
1276                                                                 ($W32)?"":"_",$s2;
1277                                         } else {
1278                                                 printf OUT "    %s%s\n",
1279                                                                 ($W32)?"":"_",$s2;
1280                                         }
1281                                 }
1282                         }
1283                 }
1284         } while ($linux && $thisversion ne $currversion);
1285         if ($linux) {
1286                 if ($prevprevsymversion ne "") {
1287                         print OUT "    local: *;\n} OPENSSL_$prevprevsymversion;\n\n";
1288                 } else {
1289                         print OUT "    local: *;\n};\n\n";
1290                 }
1291         } elsif ($VMS) {
1292             print OUT ")\n";
1293             (my $libvmaj, my $libvmin, my $libvedit) =
1294                 $currversion =~ /^(\d+)_(\d+)_(\d+)$/;
1295             # The reason to multiply the edit number with 100 is to make space
1296             # for the possibility that we want to encode the patch letters
1297             print OUT "GSMATCH=LEQUAL,",($libvmaj * 100 + $libvmin),",",($libvedit * 100),"\n";
1298         }
1299         printf OUT "\n";
1300 }
1301
1302 sub load_numbers
1303 {
1304         my($name)=@_;
1305         my(@a,%ret);
1306         my $prevversion;
1307
1308         $max_num = 0;
1309         $num_noinfo = 0;
1310         $prev = "";
1311         $prev_cnt = 0;
1312
1313         my ($baseversion, $currversion) = get_openssl_version();
1314
1315         open(IN,"<$name") || die "unable to open $name:$!\n";
1316         while (<IN>) {
1317                 s|\R$||;        # Better chomp
1318                 s/#.*$//;
1319                 next if /^\s*$/;
1320                 @a=split;
1321                 if (defined $ret{$a[0]}) {
1322                         # This is actually perfectly OK
1323                         #print STDERR "Warning: Symbol '",$a[0],"' redefined. old=",$ret{$a[0]},", new=",$a[1],"\n";
1324                 }
1325                 if ($max_num > $a[1]) {
1326                         print STDERR "Warning: Number decreased from ",$max_num," to ",$a[1],"\n";
1327                 }
1328                 elsif ($max_num == $a[1]) {
1329                         # This is actually perfectly OK
1330                         #print STDERR "Warning: Symbol ",$a[0]," has same number as previous ",$prev,": ",$a[1],"\n";
1331                         if ($a[0] eq $prev) {
1332                                 $prev_cnt++;
1333                                 $a[0] .= "{$prev_cnt}";
1334                         }
1335                 }
1336                 else {
1337                         $prev_cnt = 0;
1338                 }
1339                 if ($#a < 2) {
1340                         # Existence will be proven later, in do_defs
1341                         $ret{$a[0]}=$a[1];
1342                         $num_noinfo++;
1343                 } else {
1344                         #Sanity check the version number
1345                         if (defined $prevversion) {
1346                                 check_version_lte($prevversion, $a[2]);
1347                         }
1348                         check_version_lte($a[2], $currversion);
1349                         $prevversion = $a[2];
1350                         $ret{$a[0]}=$a[1]."\\".$a[2]."\\".$a[3]; # \\ is a special marker
1351                 }
1352                 $max_num = $a[1] if $a[1] > $max_num;
1353                 $prev=$a[0];
1354         }
1355         if ($num_noinfo) {
1356                 print STDERR "Warning: $num_noinfo symbols were without info.";
1357                 if ($do_rewrite) {
1358                         printf STDERR "  The rewrite will fix this.\n";
1359                 } else {
1360                         printf STDERR "  You should do a rewrite to fix this.\n";
1361                 }
1362         }
1363         close(IN);
1364         return(%ret);
1365 }
1366
1367 sub parse_number
1368 {
1369         (my $str, my $what) = @_;
1370         (my $n, my $v, my $i) = split(/\\/,$str);
1371         if ($what eq "n") {
1372                 return $n;
1373         } else {
1374                 return $i;
1375         }
1376 }
1377
1378 sub rewrite_numbers
1379 {
1380         (*OUT,$name,*nums,@symbols)=@_;
1381         my $thing;
1382
1383         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1384         my $r; my %r; my %rsyms;
1385         foreach $r (@r) {
1386                 (my $s, my $i) = split /\\/, $r;
1387                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1388                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1389                 $r{$a} = $s."\\".$i;
1390                 $rsyms{$s} = 1;
1391         }
1392
1393         my %syms = ();
1394         foreach $_ (@symbols) {
1395                 (my $n, my $i) = split /\\/;
1396                 $syms{$n} = 1;
1397         }
1398
1399         my @s=sort {
1400             &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n")
1401             || $a cmp $b
1402         } keys %nums;
1403         foreach $sym (@s) {
1404                 (my $n, my $vers, my $i) = split /\\/, $nums{$sym};
1405                 next if defined($i) && $i =~ /^.*?:.*?:\w+\(\w+\)/;
1406                 next if defined($rsyms{$sym});
1407                 print STDERR "DEBUG: rewrite_numbers for sym = ",$sym,": i = ",$i,", n = ",$n,", rsym{sym} = ",$rsyms{$sym},"syms{sym} = ",$syms{$sym},"\n" if $debug;
1408                 $i="NOEXIST::FUNCTION:"
1409                         if !defined($i) || $i eq "" || !defined($syms{$sym});
1410                 my $s2 = $sym;
1411                 $s2 =~ s/\{[0-9]+\}$//;
1412                 printf OUT "%s%-39s %d\t%s\t%s\n","",$s2,$n,$vers,$i;
1413                 if (exists $r{$sym}) {
1414                         (my $s, $i) = split /\\/,$r{$sym};
1415                         my $s2 = $s;
1416                         $s2 =~ s/\{[0-9]+\}$//;
1417                         printf OUT "%s%-39s %d\t%s\t%s\n","",$s2,$n,$vers,$i;
1418                 }
1419         }
1420 }
1421
1422 sub update_numbers
1423 {
1424         (*OUT,$name,*nums,my $start_num, my @symbols)=@_;
1425         my $new_syms = 0;
1426         my $basevers;
1427         my $vers;
1428
1429         ($basevers, $vers) = get_openssl_version();
1430
1431         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1432         my $r; my %r; my %rsyms;
1433         foreach $r (@r) {
1434                 (my $s, my $i) = split /\\/, $r;
1435                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1436                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1437                 $r{$a} = $s."\\".$i;
1438                 $rsyms{$s} = 1;
1439         }
1440
1441         foreach $sym (@symbols) {
1442                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1443                 next if $i =~ /^.*?:.*?:\w+\(\w+\)/;
1444                 next if defined($rsyms{$sym});
1445                 die "ERROR: Symbol $sym had no info attached to it."
1446                     if $i eq "";
1447                 if (!exists $nums{$s}) {
1448                         $new_syms++;
1449                         my $s2 = $s;
1450                         $s2 =~ s/\{[0-9]+\}$//;
1451                         printf OUT "%s%-39s %d\t%s\t%s\n","",$s2, ++$start_num,$vers,$i;
1452                         if (exists $r{$s}) {
1453                                 ($s, $i) = split /\\/,$r{$s};
1454                                 $s =~ s/\{[0-9]+\}$//;
1455                                 printf OUT "%s%-39s %d\t%s\t%s\n","",$s, $start_num,$vers,$i;
1456                         }
1457                 }
1458         }
1459         if($new_syms) {
1460                 print STDERR "$name: Added $new_syms new symbols\n";
1461         } else {
1462                 print STDERR "$name: No new symbols added\n";
1463         }
1464 }
1465
1466 sub check_existing
1467 {
1468         (*nums, my @symbols)=@_;
1469         my %existing; my @remaining;
1470         @remaining=();
1471         foreach $sym (@symbols) {
1472                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1473                 $existing{$s}=1;
1474         }
1475         foreach $sym (keys %nums) {
1476                 if (!exists $existing{$sym}) {
1477                         push @remaining, $sym;
1478                 }
1479         }
1480         if(@remaining) {
1481                 print STDERR "The following symbols do not seem to exist:\n";
1482                 foreach $sym (@remaining) {
1483                         print STDERR "\t",$sym,"\n";
1484                 }
1485         }
1486 }
1487
1488 sub count_parens
1489 {
1490         my $line = shift(@_);
1491
1492         my $open = $line =~ tr/\(//;
1493         my $close = $line =~ tr/\)//;
1494
1495         return $open - $close;
1496 }
1497
1498 #Parse opensslv.h to get the current version number. Also work out the base
1499 #version, i.e. the lowest version number that is binary compatible with this
1500 #version
1501 sub get_openssl_version()
1502 {
1503         my $fn = catfile($config{sourcedir},"include","openssl","opensslv.h");
1504         open (IN, "$fn") || die "Can't open opensslv.h";
1505
1506         while(<IN>) {
1507                 if (/OPENSSL_VERSION_TEXT\s+"OpenSSL (\d\.\d\.)(\d[a-z]*)(-| )/) {
1508                         my $suffix = $2;
1509                         (my $baseversion = $1) =~ s/\./_/g;
1510                         close IN;
1511                         return ($baseversion."0", $baseversion.$suffix);
1512                 }
1513         }
1514         die "Can't find OpenSSL version number\n";
1515 }
1516
1517 #Given an OpenSSL version number, calculate the next version number. If the
1518 #version number gets to a.b.czz then we go to a.b.(c+1)
1519 sub get_next_version()
1520 {
1521         my $thisversion = shift;
1522
1523         my ($base, $letter) = $thisversion =~ /^(\d_\d_\d)([a-z]{0,2})$/;
1524
1525         if ($letter eq "zz") {
1526                 my $lastnum = substr($base, -1);
1527                 return substr($base, 0, length($base)-1).(++$lastnum);
1528         }
1529         return $base.get_next_letter($letter);
1530 }
1531
1532 #Given the letters off the end of an OpenSSL version string, calculate what
1533 #the letters for the next release would be.
1534 sub get_next_letter()
1535 {
1536         my $thisletter = shift;
1537         my $baseletter = "";
1538         my $endletter;
1539
1540         if ($thisletter eq "") {
1541                 return "a";
1542         }
1543         if ((length $thisletter) > 1) {
1544                 ($baseletter, $endletter) = $thisletter =~ /([a-z]+)([a-z])/;
1545         } else {
1546                 $endletter = $thisletter;
1547         }
1548
1549         if ($endletter eq "z") {
1550                 return $thisletter."a";
1551         } else {
1552                 return $baseletter.(++$endletter);
1553         }
1554 }
1555
1556 #Check if a version is less than or equal to the current version. Its a fatal
1557 #error if not. They must also only differ in letters, or the last number (i.e.
1558 #the first two numbers must be the same)
1559 sub check_version_lte()
1560 {
1561         my ($testversion, $currversion) = @_;
1562         my $lentv;
1563         my $lencv;
1564         my $cvbase;
1565
1566         my ($cvnums) = $currversion =~ /^(\d_\d_\d)[a-z]*$/;
1567         my ($tvnums) = $testversion =~ /^(\d_\d_\d)[a-z]*$/;
1568
1569         #Die if we can't parse the version numbers or they don't look sane
1570         die "Invalid version number: $testversion and $currversion\n"
1571                 if (!defined($cvnums) || !defined($tvnums)
1572                         || length($cvnums) != 5
1573                         || length($tvnums) != 5);
1574
1575         #If the base versions (without letters) don't match check they only differ
1576         #in the last number
1577         if ($cvnums ne $tvnums) {
1578                 die "Invalid version number: $testversion "
1579                         ."for current version $currversion\n"
1580                         if (substr($cvnums, 0, 4) ne substr($tvnums, 0, 4));
1581                 return;
1582         }
1583         #If we get here then the base version (i.e. the numbers) are the same - they
1584         #only differ in the letters
1585
1586         $lentv = length $testversion;
1587         $lencv = length $currversion;
1588
1589         #If the testversion has more letters than the current version then it must
1590         #be later (or malformed)
1591         if ($lentv > $lencv) {
1592                 die "Invalid version number: $testversion "
1593                         ."is greater than $currversion\n";
1594         }
1595
1596         #Get the last letter from the current version
1597         my ($cvletter) = $currversion =~ /([a-z])$/;
1598         if (defined $cvletter) {
1599                 ($cvbase) = $currversion =~ /(\d_\d_\d[a-z]*)$cvletter$/;
1600         } else {
1601                 $cvbase = $currversion;
1602         }
1603         die "Unable to parse version number $currversion" if (!defined $cvbase);
1604         my $tvbase;
1605         my ($tvletter) = $testversion =~ /([a-z])$/;
1606         if (defined $tvletter) {
1607                 ($tvbase) = $testversion =~ /(\d_\d_\d[a-z]*)$tvletter$/;
1608         } else {
1609                 $tvbase = $testversion;
1610         }
1611         die "Unable to parse version number $testversion" if (!defined $tvbase);
1612
1613         if ($lencv > $lentv) {
1614                 #If current version has more letters than testversion then testversion
1615                 #minus the final letter must be a substring of the current version
1616                 die "Invalid version number $testversion "
1617                         ."is greater than $currversion or is invalid\n"
1618                         if (index($cvbase, $tvbase) != 0);
1619         } else {
1620                 #If both versions have the same number of letters then they must be
1621                 #equal up to the last letter, and the last letter in testversion must
1622                 #be less than or equal to the last letter in current version.
1623                 die "Invalid version number $testversion "
1624                         ."is greater than $currversion\n"
1625                         if (($cvbase ne $tvbase) && ($tvletter gt $cvletter));
1626         }
1627 }
1628
1629 sub do_deprecated()
1630 {
1631         my ($decl, $plats, $algs) = @_;
1632         $decl =~ /^\s*(DEPRECATEDIN_\d+_\d+_\d+)\s*\((.*)\)\s*$/
1633             or die "Bad DEPRECTEDIN: $decl\n";
1634         my $info1 .= "#INFO:";
1635         $info1 .= join(',', @{$plats}) . ":";
1636         my $info2 = $info1;
1637         $info1 .= join(',',@{$algs}, $1) . ";";
1638         $info2 .= join(',',@{$algs}) . ";";
1639         return $info1 . $2 . ";" . $info2;
1640 }