e5063b028a6b2714eec1dcc1cb75baab0f9ae4df
[openssl.git] / util / mkdef.pl
1 #!/usr/local/bin/perl -w
2 #
3 # generate a .def file
4 #
5 # It does this by parsing the header files and looking for the
6 # prototyped functions: it then prunes the output.
7 #
8 # Intermediary files are created, call libeay.num and ssleay.num,...
9 # Previously, they had the following format:
10 #
11 #       routine-name    nnnn
12 #
13 # But that isn't enough for a number of reasons, the first on being that
14 # this format is (needlessly) very Win32-centric, and even then...
15 # One of the biggest problems is that there's no information about what
16 # routines should actually be used, which varies with what crypto algorithms
17 # are disabled.  Also, some operating systems (for example VMS with VAX C)
18 # need to keep track of the global variables as well as the functions.
19 #
20 # So, a remake of this script is done so as to include information on the
21 # kind of symbol it is (function or variable) and what algorithms they're
22 # part of.  This will allow easy translating to .def files or the corresponding
23 # file in other operating systems (a .opt file for VMS, possibly with a .mar
24 # file).
25 #
26 # The format now becomes:
27 #
28 #       routine-name    nnnn    info
29 #
30 # and the "info" part is actually a colon-separated string of fields with
31 # the following meaning:
32 #
33 #       existence:platform:kind:algorithms
34 #
35 # - "existence" can be "EXIST" or "NOEXIST" depending on if the symbol is
36 #   found somewhere in the source, 
37 # - "platforms" is empty if it exists on all platforms, otherwise it contains
38 #   comma-separated list of the platform, just as they are if the symbol exists
39 #   for those platforms, or prepended with a "!" if not.  This helps resolve
40 #   symbol name variants for platforms where the names are too long for the
41 #   compiler or linker, or if the systems is case insensitive and there is a
42 #   clash, or the symbol is implemented differently (see
43 #   EXPORT_VAR_AS_FUNCTION).  This script assumes renaming of symbols is found
44 #   in the file crypto/symhacks.h.
45 #   The semantics for the platforms is that every item is checked against the
46 #   environment.  For the negative items ("!FOO"), if any of them is false
47 #   (i.e. "FOO" is true) in the environment, the corresponding symbol can't be
48 #   used.  For the positive itms, if all of them are false in the environment,
49 #   the corresponding symbol can't be used.  Any combination of positive and
50 #   negative items are possible, and of course leave room for some redundancy.
51 # - "kind" is "FUNCTION" or "VARIABLE".  The meaning of that is obvious.
52 # - "algorithms" is a comma-separated list of algorithm names.  This helps
53 #   exclude symbols that are part of an algorithm that some user wants to
54 #   exclude.
55 #
56
57 my $debug=0;
58
59 my $crypto_num= "util/libeay.num";
60 my $ssl_num=    "util/ssleay.num";
61 my $libname;
62
63 my $do_update = 0;
64 my $do_rewrite = 1;
65 my $do_crypto = 0;
66 my $do_ssl = 0;
67 my $do_ctest = 0;
68 my $do_ctestall = 0;
69 my $do_checkexist = 0;
70
71 my $VMSVAX=0;
72 my $VMSNonVAX=0;
73 my $VMS=0;
74 my $W32=0;
75 my $NT=0;
76 my $OS2=0;
77 # Set this to make typesafe STACK definitions appear in DEF
78 my $safe_stack_def = 0;
79
80 my @known_platforms = ( "__FreeBSD__", "PERL5",
81                         "EXPORT_VAR_AS_FUNCTION", "ZLIB",
82                         "OPENSSL_FIPS", "OPENSSL_FIPSCAPABLE" );
83 my @known_ossl_platforms = ( "VMS", "WIN32", "WINNT", "OS2" );
84 my @known_algorithms = ( "RC2", "RC4", "RC5", "IDEA", "DES", "BF",
85                          "CAST", "MD2", "MD4", "MD5", "SHA", "SHA0", "SHA1",
86                          "SHA256", "SHA512", "RIPEMD",
87                          "MDC2", "WHIRLPOOL", "RSA", "DSA", "DH", "EC", "ECDH", "ECDSA", "EC2M",
88                          "HMAC", "AES", "CAMELLIA", "SEED", "GOST",
89                          # EC_NISTP_64_GCC_128
90                          "EC_NISTP_64_GCC_128",
91                          # Envelope "algorithms"
92                          "EVP", "X509", "ASN1_TYPEDEFS",
93                          # Helper "algorithms"
94                          "BIO", "COMP", "BUFFER", "LHASH", "STACK", "ERR",
95                          "LOCKING",
96                          # External "algorithms"
97                          "FP_API", "STDIO", "SOCK", "KRB5", "DGRAM",
98                          # Engines
99                          "STATIC_ENGINE", "ENGINE", "HW", "GMP",
100                          # RFC3779
101                          "RFC3779",
102                          # TLS
103                          "TLSEXT", "PSK", "SRP", "HEARTBEATS",
104                          # CMS
105                          "CMS",
106                          # CryptoAPI Engine
107                          "CAPIENG",
108                          # SSL v3 method
109                          "SSL3_METHOD",
110                          # JPAKE
111                          "JPAKE",
112                          # NEXTPROTONEG
113                          "NEXTPROTONEG",
114                          # Deprecated functions
115                          "DEPRECATED",
116                          # Hide SSL internals
117                          "SSL_INTERN",
118                          # SCTP
119                          "SCTP",
120                          # SRTP
121                          "SRTP",
122                          # SSL TRACE
123                          "SSL_TRACE",
124                          # Unit testing
125                          "UNIT_TEST");
126
127 my $options="";
128 open(IN,"<Makefile") || die "unable to open Makefile!\n";
129 while(<IN>) {
130     $options=$1 if (/^OPTIONS=(.*)$/);
131 }
132 close(IN);
133
134 # The following ciphers may be excluded (by Configure). This means functions
135 # defined with ifndef(NO_XXX) are not included in the .def file, and everything
136 # in directory xxx is ignored.
137 my $no_rc2; my $no_rc4; my $no_rc5; my $no_idea; my $no_des; my $no_bf;
138 my $no_cast; my $no_whirlpool; my $no_camellia; my $no_seed;
139 my $no_md2; my $no_md4; my $no_md5; my $no_sha; my $no_ripemd; my $no_mdc2;
140 my $no_rsa; my $no_dsa; my $no_dh; my $no_hmac=0; my $no_aes; my $no_krb5;
141 my $no_ec; my $no_ecdsa; my $no_ecdh; my $no_engine; my $no_hw;
142 my $no_fp_api; my $no_static_engine=1; my $no_gmp; my $no_deprecated;
143 my $no_rfc3779; my $no_psk; my $no_tlsext; my $no_cms; my $no_capieng;
144 my $no_jpake; my $no_srp; my $no_ec2m; my $no_nistp_gcc; 
145 my $no_nextprotoneg; my $no_sctp; my $no_srtp; my $no_ssl_trace;
146 my $no_unit_test; my $no_ssl3_method;
147
148 my $fips;
149
150 my $zlib;
151
152
153 foreach (@ARGV, split(/ /, $options))
154         {
155         $debug=1 if $_ eq "debug";
156         $W32=1 if $_ eq "32";
157         die "win16 not supported" if $_ eq "16";
158         if($_ eq "NT") {
159                 $W32 = 1;
160                 $NT = 1;
161         }
162         if ($_ eq "VMS-VAX") {
163                 $VMS=1;
164                 $VMSVAX=1;
165         }
166         if ($_ eq "VMS-NonVAX") {
167                 $VMS=1;
168                 $VMSNonVAX=1;
169         }
170         $VMS=1 if $_ eq "VMS";
171         $OS2=1 if $_ eq "OS2";
172         $fips=1 if /^fips/;
173         if ($_ eq "zlib" || $_ eq "enable-zlib" || $_ eq "zlib-dynamic"
174                          || $_ eq "enable-zlib-dynamic") {
175                 $zlib = 1;
176         }
177
178         $do_ssl=1 if $_ eq "ssleay";
179         if ($_ eq "ssl") {
180                 $do_ssl=1; 
181                 $libname=$_
182         }
183         $do_crypto=1 if $_ eq "libeay";
184         if ($_ eq "crypto") {
185                 $do_crypto=1;
186                 $libname=$_;
187         }
188         $no_static_engine=1 if $_ eq "no-static-engine";
189         $no_static_engine=0 if $_ eq "enable-static-engine";
190         $do_update=1 if $_ eq "update";
191         $do_rewrite=1 if $_ eq "rewrite";
192         $do_ctest=1 if $_ eq "ctest";
193         $do_ctestall=1 if $_ eq "ctestall";
194         $do_checkexist=1 if $_ eq "exist";
195         #$safe_stack_def=1 if $_ eq "-DDEBUG_SAFESTACK";
196
197         if    (/^no-rc2$/)      { $no_rc2=1; }
198         elsif (/^no-rc4$/)      { $no_rc4=1; }
199         elsif (/^no-rc5$/)      { $no_rc5=1; }
200         elsif (/^no-idea$/)     { $no_idea=1; }
201         elsif (/^no-des$/)      { $no_des=1; $no_mdc2=1; }
202         elsif (/^no-bf$/)       { $no_bf=1; }
203         elsif (/^no-cast$/)     { $no_cast=1; }
204         elsif (/^no-whirlpool$/)     { $no_whirlpool=1; }
205         elsif (/^no-md2$/)      { $no_md2=1; }
206         elsif (/^no-md4$/)      { $no_md4=1; }
207         elsif (/^no-md5$/)      { $no_md5=1; }
208         elsif (/^no-sha$/)      { $no_sha=1; }
209         elsif (/^no-ripemd$/)   { $no_ripemd=1; }
210         elsif (/^no-mdc2$/)     { $no_mdc2=1; }
211         elsif (/^no-rsa$/)      { $no_rsa=1; }
212         elsif (/^no-dsa$/)      { $no_dsa=1; }
213         elsif (/^no-dh$/)       { $no_dh=1; }
214         elsif (/^no-ec$/)       { $no_ec=1; }
215         elsif (/^no-ecdsa$/)    { $no_ecdsa=1; }
216         elsif (/^no-ecdh$/)     { $no_ecdh=1; }
217         elsif (/^no-hmac$/)     { $no_hmac=1; }
218         elsif (/^no-aes$/)      { $no_aes=1; }
219         elsif (/^no-camellia$/) { $no_camellia=1; }
220         elsif (/^no-seed$/)     { $no_seed=1; }
221         elsif (/^no-evp$/)      { $no_evp=1; }
222         elsif (/^no-lhash$/)    { $no_lhash=1; }
223         elsif (/^no-stack$/)    { $no_stack=1; }
224         elsif (/^no-err$/)      { $no_err=1; }
225         elsif (/^no-buffer$/)   { $no_buffer=1; }
226         elsif (/^no-bio$/)      { $no_bio=1; }
227         #elsif (/^no-locking$/) { $no_locking=1; }
228         elsif (/^no-comp$/)     { $no_comp=1; }
229         elsif (/^no-dso$/)      { $no_dso=1; }
230         elsif (/^no-krb5$/)     { $no_krb5=1; }
231         elsif (/^no-engine$/)   { $no_engine=1; }
232         elsif (/^no-hw$/)       { $no_hw=1; }
233         elsif (/^no-gmp$/)      { $no_gmp=1; }
234         elsif (/^no-rfc3779$/)  { $no_rfc3779=1; }
235         elsif (/^no-tlsext$/)   { $no_tlsext=1; }
236         elsif (/^no-cms$/)      { $no_cms=1; }
237         elsif (/^no-ec2m$/)     { $no_ec2m=1; }
238         elsif (/^no-ec-nistp224-64-gcc-128$/)   { $no_nistp_gcc=1; }
239         elsif (/^no-nextprotoneg$/)     { $no_nextprotoneg=1; }
240         elsif (/^no-ssl3-method$/) { $no_ssl3_method=1; }
241         elsif (/^no-ssl-trace$/) { $no_ssl_trace=1; }
242         elsif (/^no-capieng$/)  { $no_capieng=1; }
243         elsif (/^no-jpake$/)    { $no_jpake=1; }
244         elsif (/^no-srp$/)      { $no_srp=1; }
245         elsif (/^no-sctp$/)     { $no_sctp=1; }
246         elsif (/^no-srtp$/)     { $no_srtp=1; }
247         elsif (/^no-unit-test$/){ $no_unit_test=1; }
248         elsif (/^no-deprecated$/) { $no_deprecated=1; }
249         }
250
251
252 if (!$libname) { 
253         if ($do_ssl) {
254                 $libname="SSLEAY";
255         }
256         if ($do_crypto) {
257                 $libname="LIBEAY";
258         }
259 }
260
261 # If no platform is given, assume WIN32
262 if ($W32 + $VMS + $OS2 == 0) {
263         $W32 = 1;
264 }
265
266 if (!$do_ssl && !$do_crypto)
267         {
268         print STDERR "usage: $0 ( ssl | crypto ) [ 16 | 32 | NT | OS2 ]\n";
269         exit(1);
270         }
271
272 %ssl_list=&load_numbers($ssl_num);
273 $max_ssl = $max_num;
274 %crypto_list=&load_numbers($crypto_num);
275 $max_crypto = $max_num;
276
277 my $ssl="ssl/ssl.h";
278 $ssl.=" ssl/kssl.h";
279 $ssl.=" ssl/tls1.h";
280 $ssl.=" ssl/srtp.h";
281
282 my $crypto ="crypto/crypto.h";
283 $crypto.=" crypto/cryptlib.h";
284 $crypto.=" crypto/o_dir.h";
285 $crypto.=" crypto/o_str.h";
286 $crypto.=" crypto/des/des.h crypto/des/des_old.h" ; # unless $no_des;
287 $crypto.=" crypto/idea/idea.h" ; # unless $no_idea;
288 $crypto.=" crypto/rc4/rc4.h" ; # unless $no_rc4;
289 $crypto.=" crypto/rc5/rc5.h" ; # unless $no_rc5;
290 $crypto.=" crypto/rc2/rc2.h" ; # unless $no_rc2;
291 $crypto.=" crypto/bf/blowfish.h" ; # unless $no_bf;
292 $crypto.=" crypto/cast/cast.h" ; # unless $no_cast;
293 $crypto.=" crypto/whrlpool/whrlpool.h" ;
294 $crypto.=" crypto/md2/md2.h" ; # unless $no_md2;
295 $crypto.=" crypto/md4/md4.h" ; # unless $no_md4;
296 $crypto.=" crypto/md5/md5.h" ; # unless $no_md5;
297 $crypto.=" crypto/mdc2/mdc2.h" ; # unless $no_mdc2;
298 $crypto.=" crypto/sha/sha.h" ; # unless $no_sha;
299 $crypto.=" crypto/ripemd/ripemd.h" ; # unless $no_ripemd;
300 $crypto.=" crypto/aes/aes.h" ; # unless $no_aes;
301 $crypto.=" crypto/camellia/camellia.h" ; # unless $no_camellia;
302 $crypto.=" crypto/seed/seed.h"; # unless $no_seed;
303
304 $crypto.=" crypto/bn/bn.h";
305 $crypto.=" crypto/rsa/rsa.h" ; # unless $no_rsa;
306 $crypto.=" crypto/dsa/dsa.h" ; # unless $no_dsa;
307 $crypto.=" crypto/dh/dh.h" ; # unless $no_dh;
308 $crypto.=" crypto/ec/ec.h" ; # unless $no_ec;
309 $crypto.=" crypto/ecdsa/ecdsa.h" ; # unless $no_ecdsa;
310 $crypto.=" crypto/ecdh/ecdh.h" ; # unless $no_ecdh;
311 $crypto.=" crypto/hmac/hmac.h" ; # unless $no_hmac;
312 $crypto.=" crypto/cmac/cmac.h" ;
313
314 $crypto.=" crypto/engine/engine.h"; # unless $no_engine;
315 $crypto.=" crypto/stack/stack.h" ; # unless $no_stack;
316 $crypto.=" crypto/buffer/buffer.h" ; # unless $no_buffer;
317 $crypto.=" crypto/bio/bio.h" ; # unless $no_bio;
318 $crypto.=" crypto/dso/dso.h" ; # unless $no_dso;
319 $crypto.=" crypto/lhash/lhash.h" ; # unless $no_lhash;
320 $crypto.=" crypto/conf/conf.h";
321 $crypto.=" crypto/txt_db/txt_db.h";
322
323 $crypto.=" crypto/evp/evp.h" ; # unless $no_evp;
324 $crypto.=" crypto/objects/objects.h";
325 $crypto.=" crypto/pem/pem.h";
326 #$crypto.=" crypto/meth/meth.h";
327 $crypto.=" crypto/asn1/asn1.h";
328 $crypto.=" crypto/asn1/asn1t.h";
329 $crypto.=" crypto/asn1/asn1_mac.h";
330 $crypto.=" crypto/err/err.h" ; # unless $no_err;
331 $crypto.=" crypto/pkcs7/pkcs7.h";
332 $crypto.=" crypto/pkcs12/pkcs12.h";
333 $crypto.=" crypto/x509/x509.h";
334 $crypto.=" crypto/x509/x509_vfy.h";
335 $crypto.=" crypto/x509v3/x509v3.h";
336 $crypto.=" crypto/ts/ts.h";
337 $crypto.=" crypto/rand/rand.h";
338 $crypto.=" crypto/comp/comp.h" ; # unless $no_comp;
339 $crypto.=" crypto/ocsp/ocsp.h";
340 $crypto.=" crypto/ui/ui.h crypto/ui/ui_compat.h";
341 $crypto.=" crypto/krb5/krb5_asn.h";
342 #$crypto.=" crypto/store/store.h";
343 $crypto.=" crypto/pqueue/pqueue.h";
344 $crypto.=" crypto/cms/cms.h";
345 $crypto.=" crypto/jpake/jpake.h";
346 $crypto.=" crypto/srp/srp.h";
347 $crypto.=" crypto/modes/modes.h";
348
349 my $symhacks="crypto/symhacks.h";
350
351 my @ssl_symbols = &do_defs("SSLEAY", $ssl, $symhacks);
352 my @crypto_symbols = &do_defs("LIBEAY", $crypto, $symhacks);
353
354 if ($do_update) {
355
356 if ($do_ssl == 1) {
357
358         &maybe_add_info("SSLEAY",*ssl_list,@ssl_symbols);
359         if ($do_rewrite == 1) {
360                 open(OUT, ">$ssl_num");
361                 &rewrite_numbers(*OUT,"SSLEAY",*ssl_list,@ssl_symbols);
362         } else {
363                 open(OUT, ">>$ssl_num");
364         }
365         &update_numbers(*OUT,"SSLEAY",*ssl_list,$max_ssl,@ssl_symbols);
366         close OUT;
367 }
368
369 if($do_crypto == 1) {
370
371         &maybe_add_info("LIBEAY",*crypto_list,@crypto_symbols);
372         if ($do_rewrite == 1) {
373                 open(OUT, ">$crypto_num");
374                 &rewrite_numbers(*OUT,"LIBEAY",*crypto_list,@crypto_symbols);
375         } else {
376                 open(OUT, ">>$crypto_num");
377         }
378         &update_numbers(*OUT,"LIBEAY",*crypto_list,$max_crypto,@crypto_symbols);
379         close OUT;
380
381
382 } elsif ($do_checkexist) {
383         &check_existing(*ssl_list, @ssl_symbols)
384                 if $do_ssl == 1;
385         &check_existing(*crypto_list, @crypto_symbols)
386                 if $do_crypto == 1;
387 } elsif ($do_ctest || $do_ctestall) {
388
389         print <<"EOF";
390
391 /* Test file to check all DEF file symbols are present by trying
392  * to link to all of them. This is *not* intended to be run!
393  */
394
395 int main()
396 {
397 EOF
398         &print_test_file(*STDOUT,"SSLEAY",*ssl_list,$do_ctestall,@ssl_symbols)
399                 if $do_ssl == 1;
400
401         &print_test_file(*STDOUT,"LIBEAY",*crypto_list,$do_ctestall,@crypto_symbols)
402                 if $do_crypto == 1;
403
404         print "}\n";
405
406 } else {
407
408         &print_def_file(*STDOUT,$libname,*ssl_list,@ssl_symbols)
409                 if $do_ssl == 1;
410
411         &print_def_file(*STDOUT,$libname,*crypto_list,@crypto_symbols)
412                 if $do_crypto == 1;
413
414 }
415
416
417 sub do_defs
418 {
419         my($name,$files,$symhacksfile)=@_;
420         my $file;
421         my @ret;
422         my %syms;
423         my %platform;           # For anything undefined, we assume ""
424         my %kind;               # For anything undefined, we assume "FUNCTION"
425         my %algorithm;          # For anything undefined, we assume ""
426         my %variant;
427         my %variant_cnt;        # To be able to allocate "name{n}" if "name"
428                                 # is the same name as the original.
429         my $cpp;
430         my %unknown_algorithms = ();
431         my $parens = 0;
432
433         foreach $file (split(/\s+/,$symhacksfile." ".$files))
434                 {
435                 print STDERR "DEBUG: starting on $file:\n" if $debug;
436                 open(IN,"<$file") || die "unable to open $file:$!\n";
437                 my $line = "", my $def= "";
438                 my %tag = (
439                         (map { $_ => 0 } @known_platforms),
440                         (map { "OPENSSL_SYS_".$_ => 0 } @known_ossl_platforms),
441                         (map { "OPENSSL_NO_".$_ => 0 } @known_algorithms),
442                         (map { "OPENSSL_USE_".$_ => 0 } @known_algorithms),
443                         NOPROTO         => 0,
444                         PERL5           => 0,
445                         _WINDLL         => 0,
446                         CONST_STRICT    => 0,
447                         TRUE            => 1,
448                 );
449                 my $symhacking = $file eq $symhacksfile;
450                 my @current_platforms = ();
451                 my @current_algorithms = ();
452
453                 # params: symbol, alias, platforms, kind
454                 # The reason to put this subroutine in a variable is that
455                 # it will otherwise create it's own, unshared, version of
456                 # %tag and %variant...
457                 my $make_variant = sub
458                 {
459                         my ($s, $a, $p, $k) = @_;
460                         my ($a1, $a2);
461
462                         print STDERR "DEBUG: make_variant: Entered with ",$s,", ",$a,", ",(defined($p)?$p:""),", ",(defined($k)?$k:""),"\n" if $debug;
463                         if (defined($p))
464                         {
465                                 $a1 = join(",",$p,
466                                            grep(!/^$/,
467                                                 map { $tag{$_} == 1 ? $_ : "" }
468                                                 @known_platforms));
469                         }
470                         else
471                         {
472                                 $a1 = join(",",
473                                            grep(!/^$/,
474                                                 map { $tag{$_} == 1 ? $_ : "" }
475                                                 @known_platforms));
476                         }
477                         $a2 = join(",",
478                                    grep(!/^$/,
479                                         map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ : "" }
480                                         @known_ossl_platforms));
481                         print STDERR "DEBUG: make_variant: a1 = $a1; a2 = $a2\n" if $debug;
482                         if ($a1 eq "") { $a1 = $a2; }
483                         elsif ($a1 ne "" && $a2 ne "") { $a1 .= ",".$a2; }
484                         if ($a eq $s)
485                         {
486                                 if (!defined($variant_cnt{$s}))
487                                 {
488                                         $variant_cnt{$s} = 0;
489                                 }
490                                 $variant_cnt{$s}++;
491                                 $a .= "{$variant_cnt{$s}}";
492                         }
493                         my $toadd = $a.":".$a1.(defined($k)?":".$k:"");
494                         my $togrep = $s.'(\{[0-9]+\})?:'.$a1.(defined($k)?":".$k:"");
495                         if (!grep(/^$togrep$/,
496                                   split(/;/, defined($variant{$s})?$variant{$s}:""))) {
497                                 if (defined($variant{$s})) { $variant{$s} .= ";"; }
498                                 $variant{$s} .= $toadd;
499                         }
500                         print STDERR "DEBUG: make_variant: Exit with variant of ",$s," = ",$variant{$s},"\n" if $debug;
501                 };
502
503                 print STDERR "DEBUG: parsing ----------\n" if $debug;
504                 while(<IN>) {
505                         if($parens > 0) {
506                                 #Inside a DECLARE_DEPRECATED
507                                 $parens += count_parens($_);
508                                 next;
509                         }
510                         if (/\/\* Error codes for the \w+ functions\. \*\//)
511                                 {
512                                 undef @tag;
513                                 last;
514                                 }
515                         if ($line ne '') {
516                                 $_ = $line . $_;
517                                 $line = '';
518                         }
519
520                         if (/\\$/) {
521                                 chomp; # remove eol
522                                 chop; # remove ending backslash
523                                 $line = $_;
524                                 next;
525                         }
526
527                         if(/\/\*/) {
528                                 if (not /\*\//) {       # multiline comment...
529                                         $line = $_;     # ... just accumulate
530                                         next;
531                                 } else {
532                                         s/\/\*.*?\*\///gs;# wipe it
533                                 }
534                         }
535
536                         if ($cpp) {
537                                 $cpp++ if /^#\s*if/;
538                                 $cpp-- if /^#\s*endif/;
539                                 next;
540                         }
541                         $cpp = 1 if /^#.*ifdef.*cplusplus/;
542
543                         s/{[^{}]*}//gs;                      # ignore {} blocks
544                         print STDERR "DEBUG: \$def=\"$def\"\n" if $debug && $def ne "";
545                         print STDERR "DEBUG: \$_=\"$_\"\n" if $debug;
546                         if (/^\#\s*ifndef\s+(.*)/) {
547                                 push(@tag,"-");
548                                 push(@tag,$1);
549                                 $tag{$1}=-1;
550                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
551                         } elsif (/^\#\s*if\s+!defined\(([^\)]+)\)/) {
552                                 push(@tag,"-");
553                                 if (/^\#\s*if\s+(!defined\(([^\)]+)\)(\s+\&\&\s+!defined\(([^\)]+)\))*)$/) {
554                                         my $tmp_1 = $1;
555                                         my $tmp_;
556                                         foreach $tmp_ (split '\&\&',$tmp_1) {
557                                                 $tmp_ =~ /!defined\(([^\)]+)\)/;
558                                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
559                                                 push(@tag,$1);
560                                                 $tag{$1}=-1;
561                                         }
562                                 } else {
563                                         print STDERR "Warning: $file: complicated expression: $_" if $debug; # because it is O...
564                                         print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
565                                         push(@tag,$1);
566                                         $tag{$1}=-1;
567                                 }
568                         } elsif (/^\#\s*ifdef\s+(\S*)/) {
569                                 push(@tag,"-");
570                                 push(@tag,$1);
571                                 $tag{$1}=1;
572                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
573                         } elsif (/^\#\s*if\s+defined\(([^\)]+)\)/) {
574                                 push(@tag,"-");
575                                 if (/^\#\s*if\s+(defined\(([^\)]+)\)(\s+\|\|\s+defined\(([^\)]+)\))*)$/) {
576                                         my $tmp_1 = $1;
577                                         my $tmp_;
578                                         foreach $tmp_ (split '\|\|',$tmp_1) {
579                                                 $tmp_ =~ /defined\(([^\)]+)\)/;
580                                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
581                                                 push(@tag,$1);
582                                                 $tag{$1}=1;
583                                         }
584                                 } else {
585                                         print STDERR "Warning: $file: complicated expression: $_\n" if $debug; # because it is O...
586                                         print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
587                                         push(@tag,$1);
588                                         $tag{$1}=1;
589                                 }
590                         } elsif (/^\#\s*error\s+(\w+) is disabled\./) {
591                                 my $tag_i = $#tag;
592                                 while($tag[$tag_i] ne "-") {
593                                         if ($tag[$tag_i] eq "OPENSSL_NO_".$1) {
594                                                 $tag{$tag[$tag_i]}=2;
595                                                 print STDERR "DEBUG: $file: chaged tag $1 = 2\n" if $debug;
596                                         }
597                                         $tag_i--;
598                                 }
599                         } elsif (/^\#\s*endif/) {
600                                 my $tag_i = $#tag;
601                                 while($tag_i > 0 && $tag[$tag_i] ne "-") {
602                                         my $t=$tag[$tag_i];
603                                         print STDERR "DEBUG: \$t=\"$t\"\n" if $debug;
604                                         if ($tag{$t}==2) {
605                                                 $tag{$t}=-1;
606                                         } else {
607                                                 $tag{$t}=0;
608                                         }
609                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
610                                         pop(@tag);
611                                         if ($t =~ /^OPENSSL_NO_([A-Z0-9_]+)$/) {
612                                                 $t=$1;
613                                         } elsif($t =~ /^OPENSSL_USE_([A-Z0-9_]+)$/) {
614                                                 $t=$1;
615                                         } else {
616                                                 $t="";
617                                         }
618                                         if ($t ne ""
619                                             && !grep(/^$t$/, @known_algorithms)) {
620                                                 $unknown_algorithms{$t} = 1;
621                                                 #print STDERR "DEBUG: Added as unknown algorithm: $t\n" if $debug;
622                                         }
623                                         $tag_i--;
624                                 }
625                                 pop(@tag);
626                         } elsif (/^\#\s*else/) {
627                                 my $tag_i = $#tag;
628                                 while($tag[$tag_i] ne "-") {
629                                         my $t=$tag[$tag_i];
630                                         $tag{$t}= -$tag{$t};
631                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
632                                         $tag_i--;
633                                 }
634                         } elsif (/^\#\s*if\s+1/) {
635                                 push(@tag,"-");
636                                 # Dummy tag
637                                 push(@tag,"TRUE");
638                                 $tag{"TRUE"}=1;
639                                 print STDERR "DEBUG: $file: found 1\n" if $debug;
640                         } elsif (/^\#\s*if\s+0/) {
641                                 push(@tag,"-");
642                                 # Dummy tag
643                                 push(@tag,"TRUE");
644                                 $tag{"TRUE"}=-1;
645                                 print STDERR "DEBUG: $file: found 0\n" if $debug;
646                         } elsif (/^\#\s*define\s+(\w+)\s+(\w+)/
647                                  && $symhacking && $tag{'TRUE'} != -1) {
648                                 # This is for aliasing.  When we find an alias,
649                                 # we have to invert
650                                 &$make_variant($1,$2);
651                                 print STDERR "DEBUG: $file: defined $1 = $2\n" if $debug;
652                         }
653                         if (/^\#/) {
654                                 @current_platforms =
655                                     grep(!/^$/,
656                                          map { $tag{$_} == 1 ? $_ :
657                                                    $tag{$_} == -1 ? "!".$_  : "" }
658                                          @known_platforms);
659                                 push @current_platforms
660                                     , grep(!/^$/,
661                                            map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ :
662                                                      $tag{"OPENSSL_SYS_".$_} == -1 ? "!".$_  : "" }
663                                            @known_ossl_platforms);
664                                 @current_algorithms = ();
665                                 @current_algorithms =
666                                     grep(!/^$/,
667                                          map { $tag{"OPENSSL_NO_".$_} == -1 ? $_ : "" }
668                                          @known_algorithms);
669                                 push @current_algorithms
670                                     , grep(!/^$/,
671                                          map { $tag{"OPENSSL_USE_".$_} == 1 ? $_ : "" }
672                                          @known_algorithms);
673                                 $def .=
674                                     "#INFO:"
675                                         .join(',',@current_platforms).":"
676                                             .join(',',@current_algorithms).";";
677                                 next;
678                         }
679                         if ($tag{'TRUE'} != -1) {
680                                 if (/^\s*DECLARE_STACK_OF\s*\(\s*(\w*)\s*\)/) {
681                                         next;
682                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
683                                         $def .= "int d2i_$3(void);";
684                                         $def .= "int i2d_$3(void);";
685                                         # Variant for platforms that do not
686                                         # have to access globale variables
687                                         # in shared libraries through functions
688                                         $def .=
689                                             "#INFO:"
690                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
691                                                     .join(',',@current_algorithms).";";
692                                         $def .= "OPENSSL_EXTERN int $2_it;";
693                                         $def .=
694                                             "#INFO:"
695                                                 .join(',',@current_platforms).":"
696                                                     .join(',',@current_algorithms).";";
697                                         # Variant for platforms that have to
698                                         # access globale variables in shared
699                                         # libraries through functions
700                                         &$make_variant("$2_it","$2_it",
701                                                       "EXPORT_VAR_AS_FUNCTION",
702                                                       "FUNCTION");
703                                         next;
704                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_fname\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
705                                         $def .= "int d2i_$3(void);";
706                                         $def .= "int i2d_$3(void);";
707                                         $def .= "int $3_free(void);";
708                                         $def .= "int $3_new(void);";
709                                         # Variant for platforms that do not
710                                         # have to access globale variables
711                                         # in shared libraries through functions
712                                         $def .=
713                                             "#INFO:"
714                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
715                                                     .join(',',@current_algorithms).";";
716                                         $def .= "OPENSSL_EXTERN int $2_it;";
717                                         $def .=
718                                             "#INFO:"
719                                                 .join(',',@current_platforms).":"
720                                                     .join(',',@current_algorithms).";";
721                                         # Variant for platforms that have to
722                                         # access globale variables in shared
723                                         # libraries through functions
724                                         &$make_variant("$2_it","$2_it",
725                                                       "EXPORT_VAR_AS_FUNCTION",
726                                                       "FUNCTION");
727                                         next;
728                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS\s*\(\s*(\w*)\s*\)/ ||
729                                          /^\s*DECLARE_ASN1_FUNCTIONS_const\s*\(\s*(\w*)\s*\)/) {
730                                         $def .= "int d2i_$1(void);";
731                                         $def .= "int i2d_$1(void);";
732                                         $def .= "int $1_free(void);";
733                                         $def .= "int $1_new(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 $1_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("$1_it","$1_it",
750                                                       "EXPORT_VAR_AS_FUNCTION",
751                                                       "FUNCTION");
752                                         next;
753                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS_const\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
754                                         $def .= "int d2i_$2(void);";
755                                         $def .= "int i2d_$2(void);";
756                                         # Variant for platforms that do not
757                                         # have to access globale variables
758                                         # in shared libraries through functions
759                                         $def .=
760                                             "#INFO:"
761                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
762                                                     .join(',',@current_algorithms).";";
763                                         $def .= "OPENSSL_EXTERN int $2_it;";
764                                         $def .=
765                                             "#INFO:"
766                                                 .join(',',@current_platforms).":"
767                                                     .join(',',@current_algorithms).";";
768                                         # Variant for platforms that have to
769                                         # access globale variables in shared
770                                         # libraries through functions
771                                         &$make_variant("$2_it","$2_it",
772                                                       "EXPORT_VAR_AS_FUNCTION",
773                                                       "FUNCTION");
774                                         next;
775                                 } elsif (/^\s*DECLARE_ASN1_ALLOC_FUNCTIONS\s*\(\s*(\w*)\s*\)/) {
776                                         $def .= "int $1_free(void);";
777                                         $def .= "int $1_new(void);";
778                                         next;
779                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
780                                         $def .= "int d2i_$2(void);";
781                                         $def .= "int i2d_$2(void);";
782                                         $def .= "int $2_free(void);";
783                                         $def .= "int $2_new(void);";
784                                         # Variant for platforms that do not
785                                         # have to access globale variables
786                                         # in shared libraries through functions
787                                         $def .=
788                                             "#INFO:"
789                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
790                                                     .join(',',@current_algorithms).";";
791                                         $def .= "OPENSSL_EXTERN int $2_it;";
792                                         $def .=
793                                             "#INFO:"
794                                                 .join(',',@current_platforms).":"
795                                                     .join(',',@current_algorithms).";";
796                                         # Variant for platforms that have to
797                                         # access globale variables in shared
798                                         # libraries through functions
799                                         &$make_variant("$2_it","$2_it",
800                                                       "EXPORT_VAR_AS_FUNCTION",
801                                                       "FUNCTION");
802                                         next;
803                                 } elsif (/^\s*DECLARE_ASN1_ITEM\s*\(\s*(\w*)\s*\)/) {
804                                         # Variant for platforms that do not
805                                         # have to access globale variables
806                                         # in shared libraries through functions
807                                         $def .=
808                                             "#INFO:"
809                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
810                                                     .join(',',@current_algorithms).";";
811                                         $def .= "OPENSSL_EXTERN int $1_it;";
812                                         $def .=
813                                             "#INFO:"
814                                                 .join(',',@current_platforms).":"
815                                                     .join(',',@current_algorithms).";";
816                                         # Variant for platforms that have to
817                                         # access globale variables in shared
818                                         # libraries through functions
819                                         &$make_variant("$1_it","$1_it",
820                                                       "EXPORT_VAR_AS_FUNCTION",
821                                                       "FUNCTION");
822                                         next;
823                                 } elsif (/^\s*DECLARE_ASN1_NDEF_FUNCTION\s*\(\s*(\w*)\s*\)/) {
824                                         $def .= "int i2d_$1_NDEF(void);";
825                                 } elsif (/^\s*DECLARE_ASN1_SET_OF\s*\(\s*(\w*)\s*\)/) {
826                                         next;
827                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION\s*\(\s*(\w*)\s*\)/) {
828                                         $def .= "int $1_print_ctx(void);";
829                                         next;
830                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
831                                         $def .= "int $2_print_ctx(void);";
832                                         next;
833                                 } elsif (/^\s*DECLARE_PKCS12_STACK_OF\s*\(\s*(\w*)\s*\)/) {
834                                         next;
835                                 } elsif (/^DECLARE_PEM_rw\s*\(\s*(\w*)\s*,/ ||
836                                          /^DECLARE_PEM_rw_cb\s*\(\s*(\w*)\s*,/ ||
837                                          /^DECLARE_PEM_rw_const\s*\(\s*(\w*)\s*,/ ) {
838                                         $def .=
839                                             "#INFO:"
840                                                 .join(',',@current_platforms).":"
841                                                     .join(',',@current_algorithms).";";
842                                         $def .= "int PEM_read_$1(void);";
843                                         $def .= "int PEM_write_$1(void);";
844                                         $def .=
845                                             "#INFO:"
846                                                 .join(',',@current_platforms).":"
847                                                     .join(',',@current_algorithms).";";
848                                         # Things that are everywhere
849                                         $def .= "int PEM_read_bio_$1(void);";
850                                         $def .= "int PEM_write_bio_$1(void);";
851                                         next;
852                                 } elsif (/^DECLARE_PEM_write\s*\(\s*(\w*)\s*,/ ||
853                                         /^DECLARE_PEM_write_const\s*\(\s*(\w*)\s*,/ ||
854                                          /^DECLARE_PEM_write_cb\s*\(\s*(\w*)\s*,/ ) {
855                                         $def .=
856                                             "#INFO:"
857                                                 .join(',',@current_platforms).":"
858                                                     .join(',',@current_algorithms).";";
859                                         $def .= "int PEM_write_$1(void);";
860                                         $def .=
861                                             "#INFO:"
862                                                 .join(',',@current_platforms).":"
863                                                     .join(',',@current_algorithms).";";
864                                         # Things that are everywhere
865                                         $def .= "int PEM_write_bio_$1(void);";
866                                         next;
867                                 } elsif (/^DECLARE_PEM_read\s*\(\s*(\w*)\s*,/ ||
868                                          /^DECLARE_PEM_read_cb\s*\(\s*(\w*)\s*,/ ) {
869                                         $def .=
870                                             "#INFO:"
871                                                 .join(',',@current_platforms).":"
872                                                     .join(',',@current_algorithms).";";
873                                         $def .= "int PEM_read_$1(void);";
874                                         $def .=
875                                             "#INFO:"
876                                                 .join(',',@current_platforms).":"
877                                                     .join(',',@current_algorithms).";";
878                                         # Things that are everywhere
879                                         $def .= "int PEM_read_bio_$1(void);";
880                                         next;
881                                 } elsif (/^OPENSSL_DECLARE_GLOBAL\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
882                                         # Variant for platforms that do not
883                                         # have to access globale variables
884                                         # in shared libraries through functions
885                                         $def .=
886                                             "#INFO:"
887                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
888                                                     .join(',',@current_algorithms).";";
889                                         $def .= "OPENSSL_EXTERN int _shadow_$2;";
890                                         $def .=
891                                             "#INFO:"
892                                                 .join(',',@current_platforms).":"
893                                                     .join(',',@current_algorithms).";";
894                                         # Variant for platforms that have to
895                                         # access globale variables in shared
896                                         # libraries through functions
897                                         &$make_variant("_shadow_$2","_shadow_$2",
898                                                       "EXPORT_VAR_AS_FUNCTION",
899                                                       "FUNCTION");
900                                 } elsif (/^\s*DECLARE_DEPRECATED\s*\(\s*(\w*(\s|\*|\w)*)/) {
901                                         $def .= "$1(void);";
902                                         $parens = count_parens($_);
903                                         next;
904                                 } elsif ($tag{'CONST_STRICT'} != 1) {
905                                         if (/\{|\/\*|\([^\)]*$/) {
906                                                 $line = $_;
907                                         } else {
908                                                 $def .= $_;
909                                         }
910                                 }
911                         }
912                 }
913                 close(IN);
914
915                 my $algs;
916                 my $plays;
917
918                 print STDERR "DEBUG: postprocessing ----------\n" if $debug;
919                 foreach (split /;/, $def) {
920                         my $s; my $k = "FUNCTION"; my $p; my $a;
921                         s/^[\n\s]*//g;
922                         s/[\n\s]*$//g;
923                         next if(/\#undef/);
924                         next if(/typedef\W/);
925                         next if(/\#define/);
926
927                         # Reduce argument lists to empty ()
928                         # fold round brackets recursively: (t(*v)(t),t) -> (t{}{},t) -> {}
929                         while(/\(.*\)/s) {
930                                 s/\([^\(\)]+\)/\{\}/gs;
931                                 s/\(\s*\*\s*(\w+)\s*\{\}\s*\)/$1/gs;    #(*f{}) -> f
932                         }
933                         # pretend as we didn't use curly braces: {} -> ()
934                         s/\{\}/\(\)/gs;
935
936                         s/STACK_OF\(\)/void/gs;
937                         s/LHASH_OF\(\)/void/gs;
938
939                         print STDERR "DEBUG: \$_ = \"$_\"\n" if $debug;
940                         if (/^\#INFO:([^:]*):(.*)$/) {
941                                 $plats = $1;
942                                 $algs = $2;
943                                 print STDERR "DEBUG: found info on platforms ($plats) and algorithms ($algs)\n" if $debug;
944                                 next;
945                         } elsif (/^\s*OPENSSL_EXTERN\s.*?(\w+(\{[0-9]+\})?)(\[[0-9]*\])*\s*$/) {
946                                 $s = $1;
947                                 $k = "VARIABLE";
948                                 print STDERR "DEBUG: found external variable $s\n" if $debug;
949                         } elsif (/TYPEDEF_\w+_OF/s) {
950                                 next;
951                         } elsif (/(\w+)\s*\(\).*/s) {   # first token prior [first] () is
952                                 $s = $1;                # a function name!
953                                 print STDERR "DEBUG: found function $s\n" if $debug;
954                         } elsif (/\(/ and not (/=/)) {
955                                 print STDERR "File $file: cannot parse: $_;\n";
956                                 next;
957                         } else {
958                                 next;
959                         }
960
961                         $syms{$s} = 1;
962                         $kind{$s} = $k;
963
964                         $p = $plats;
965                         $a = $algs;
966                         $a .= ",BF" if($s =~ /EVP_bf/);
967                         $a .= ",CAST" if($s =~ /EVP_cast/);
968                         $a .= ",DES" if($s =~ /EVP_des/);
969                         $a .= ",DSA" if($s =~ /EVP_dss/);
970                         $a .= ",IDEA" if($s =~ /EVP_idea/);
971                         $a .= ",MD2" if($s =~ /EVP_md2/);
972                         $a .= ",MD4" if($s =~ /EVP_md4/);
973                         $a .= ",MD5" if($s =~ /EVP_md5/);
974                         $a .= ",RC2" if($s =~ /EVP_rc2/);
975                         $a .= ",RC4" if($s =~ /EVP_rc4/);
976                         $a .= ",RC5" if($s =~ /EVP_rc5/);
977                         $a .= ",RIPEMD" if($s =~ /EVP_ripemd/);
978                         $a .= ",SHA" if($s =~ /EVP_sha/);
979                         $a .= ",RSA" if($s =~ /EVP_(Open|Seal)(Final|Init)/);
980                         $a .= ",RSA" if($s =~ /PEM_Seal(Final|Init|Update)/);
981                         $a .= ",RSA" if($s =~ /RSAPrivateKey/);
982                         $a .= ",RSA" if($s =~ /SSLv23?_((client|server)_)?method/);
983
984                         $platform{$s} =
985                             &reduce_platforms((defined($platform{$s})?$platform{$s}.',':"").$p);
986                         $algorithm{$s} .= ','.$a;
987
988                         if (defined($variant{$s})) {
989                                 foreach $v (split /;/,$variant{$s}) {
990                                         (my $r, my $p, my $k) = split(/:/,$v);
991                                         my $ip = join ',',map({ /^!(.*)$/ ? $1 : "!".$_ } split /,/, $p);
992                                         $syms{$r} = 1;
993                                         if (!defined($k)) { $k = $kind{$s}; }
994                                         $kind{$r} = $k."(".$s.")";
995                                         $algorithm{$r} = $algorithm{$s};
996                                         $platform{$r} = &reduce_platforms($platform{$s}.",".$p.",".$p);
997                                         $platform{$s} = &reduce_platforms($platform{$s}.','.$ip.','.$ip);
998                                         print STDERR "DEBUG: \$variant{\"$s\"} = ",$v,"; \$r = $r; \$p = ",$platform{$r},"; \$a = ",$algorithm{$r},"; \$kind = ",$kind{$r},"\n" if $debug;
999                                 }
1000                         }
1001                         print STDERR "DEBUG: \$s = $s; \$p = ",$platform{$s},"; \$a = ",$algorithm{$s},"; \$kind = ",$kind{$s},"\n" if $debug;
1002                 }
1003         }
1004
1005         # Prune the returned symbols
1006
1007         delete $syms{"bn_dump1"};
1008         $platform{"BIO_s_log"} .= ",!WIN32,!macintosh";
1009
1010         $platform{"PEM_read_NS_CERT_SEQ"} = "VMS";
1011         $platform{"PEM_write_NS_CERT_SEQ"} = "VMS";
1012         $platform{"PEM_read_P8_PRIV_KEY_INFO"} = "VMS";
1013         $platform{"PEM_write_P8_PRIV_KEY_INFO"} = "VMS";
1014         $platform{"EVP_sha384"} = "!VMSVAX";
1015         $platform{"EVP_sha512"} = "!VMSVAX";
1016         $platform{"SHA384_Init"} = "!VMSVAX";
1017         $platform{"SHA384_Transform"} = "!VMSVAX";
1018         $platform{"SHA384_Update"} = "!VMSVAX";
1019         $platform{"SHA384_Final"} = "!VMSVAX";
1020         $platform{"SHA384"} = "!VMSVAX";
1021         $platform{"SHA512_Init"} = "!VMSVAX";
1022         $platform{"SHA512_Transform"} = "!VMSVAX";
1023         $platform{"SHA512_Update"} = "!VMSVAX";
1024         $platform{"SHA512_Final"} = "!VMSVAX";
1025         $platform{"SHA512"} = "!VMSVAX";
1026
1027
1028         # Info we know about
1029
1030         push @ret, map { $_."\\".&info_string($_,"EXIST",
1031                                               $platform{$_},
1032                                               $kind{$_},
1033                                               $algorithm{$_}) } keys %syms;
1034
1035         if (keys %unknown_algorithms) {
1036                 print STDERR "WARNING: mkdef.pl doesn't know the following algorithms:\n";
1037                 print STDERR "\t",join("\n\t",keys %unknown_algorithms),"\n";
1038         }
1039         return(@ret);
1040 }
1041
1042 # Param: string of comma-separated platform-specs.
1043 sub reduce_platforms
1044 {
1045         my ($platforms) = @_;
1046         my $pl = defined($platforms) ? $platforms : "";
1047         my %p = map { $_ => 0 } split /,/, $pl;
1048         my $ret;
1049
1050         print STDERR "DEBUG: Entered reduce_platforms with \"$platforms\"\n"
1051             if $debug;
1052         # We do this, because if there's code like the following, it really
1053         # means the function exists in all cases and should therefore be
1054         # everywhere.  By increasing and decreasing, we may attain 0:
1055         #
1056         # ifndef WIN16
1057         #    int foo();
1058         # else
1059         #    int _fat foo();
1060         # endif
1061         foreach $platform (split /,/, $pl) {
1062                 if ($platform =~ /^!(.*)$/) {
1063                         $p{$1}--;
1064                 } else {
1065                         $p{$platform}++;
1066                 }
1067         }
1068         foreach $platform (keys %p) {
1069                 if ($p{$platform} == 0) { delete $p{$platform}; }
1070         }
1071
1072         delete $p{""};
1073
1074         $ret = join(',',sort(map { $p{$_} < 0 ? "!".$_ : $_ } keys %p));
1075         print STDERR "DEBUG: Exiting reduce_platforms with \"$ret\"\n"
1076             if $debug;
1077         return $ret;
1078 }
1079
1080 sub info_string {
1081         (my $symbol, my $exist, my $platforms, my $kind, my $algorithms) = @_;
1082
1083         my %a = defined($algorithms) ?
1084             map { $_ => 1 } split /,/, $algorithms : ();
1085         my $k = defined($kind) ? $kind : "FUNCTION";
1086         my $ret;
1087         my $p = &reduce_platforms($platforms);
1088
1089         delete $a{""};
1090
1091         $ret = $exist;
1092         $ret .= ":".$p;
1093         $ret .= ":".$k;
1094         $ret .= ":".join(',',sort keys %a);
1095         return $ret;
1096 }
1097
1098 sub maybe_add_info {
1099         (my $name, *nums, my @symbols) = @_;
1100         my $sym;
1101         my $new_info = 0;
1102         my %syms=();
1103
1104         print STDERR "Updating $name info\n";
1105         foreach $sym (@symbols) {
1106                 (my $s, my $i) = split /\\/, $sym;
1107                 if (defined($nums{$s})) {
1108                         $i =~ s/^(.*?:.*?:\w+)(\(\w+\))?/$1/;
1109                         (my $n, my $dummy) = split /\\/, $nums{$s};
1110                         if (!defined($dummy) || $i ne $dummy) {
1111                                 $nums{$s} = $n."\\".$i;
1112                                 $new_info++;
1113                                 print STDERR "DEBUG: maybe_add_info for $s: \"$dummy\" => \"$i\"\n" if $debug;
1114                         }
1115                 }
1116                 $syms{$s} = 1;
1117         }
1118
1119         my @s=sort { &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n") } keys %nums;
1120         foreach $sym (@s) {
1121                 (my $n, my $i) = split /\\/, $nums{$sym};
1122                 if (!defined($syms{$sym}) && $i !~ /^NOEXIST:/) {
1123                         $new_info++;
1124                         print STDERR "DEBUG: maybe_add_info for $sym: -> undefined\n" if $debug;
1125                 }
1126         }
1127         if ($new_info) {
1128                 print STDERR "$new_info old symbols got an info update\n";
1129                 if (!$do_rewrite) {
1130                         print STDERR "You should do a rewrite to fix this.\n";
1131                 }
1132         } else {
1133                 print STDERR "No old symbols needed info update\n";
1134         }
1135 }
1136
1137 # Param: string of comma-separated keywords, each possibly prefixed with a "!"
1138 sub is_valid
1139 {
1140         my ($keywords_txt,$platforms) = @_;
1141         my (@keywords) = split /,/,$keywords_txt;
1142         my ($falsesum, $truesum) = (0, 1);
1143
1144         # Param: one keyword
1145         sub recognise
1146         {
1147                 my ($keyword,$platforms) = @_;
1148
1149                 if ($platforms) {
1150                         # platforms
1151                         if ($keyword eq "VMSVAX" && $VMSVAX) { return 1; }
1152                         if ($keyword eq "VMSNonVAX" && $VMSNonVAX) { return 1; }
1153                         if ($keyword eq "VMS" && $VMS) { return 1; }
1154                         if ($keyword eq "WIN32" && $W32) { return 1; }
1155                         if ($keyword eq "WINNT" && $NT) { return 1; }
1156                         if ($keyword eq "OS2" && $OS2) { return 1; }
1157                         # Special platforms:
1158                         # EXPORT_VAR_AS_FUNCTION means that global variables
1159                         # will be represented as functions.  This currently
1160                         # only happens on VMS-VAX.
1161                         if ($keyword eq "EXPORT_VAR_AS_FUNCTION" && ($VMSVAX || $W32)) {
1162                                 return 1;
1163                         }
1164                         if ($keyword eq "OPENSSL_FIPSCAPABLE") {
1165                                 return 0;
1166                         }
1167                         if ($keyword eq "OPENSSL_FIPS" && $fips) {
1168                                 return 1;
1169                         }
1170                         if ($keyword eq "ZLIB" && $zlib) { return 1; }
1171                         return 0;
1172                 } else {
1173                         # algorithms
1174                         if ($keyword eq "RC2" && $no_rc2) { return 0; }
1175                         if ($keyword eq "RC4" && $no_rc4) { return 0; }
1176                         if ($keyword eq "RC5" && $no_rc5) { return 0; }
1177                         if ($keyword eq "IDEA" && $no_idea) { return 0; }
1178                         if ($keyword eq "DES" && $no_des) { return 0; }
1179                         if ($keyword eq "BF" && $no_bf) { return 0; }
1180                         if ($keyword eq "CAST" && $no_cast) { return 0; }
1181                         if ($keyword eq "MD2" && $no_md2) { return 0; }
1182                         if ($keyword eq "MD4" && $no_md4) { return 0; }
1183                         if ($keyword eq "MD5" && $no_md5) { return 0; }
1184                         if ($keyword eq "SHA" && $no_sha) { return 0; }
1185                         if ($keyword eq "RIPEMD" && $no_ripemd) { return 0; }
1186                         if ($keyword eq "MDC2" && $no_mdc2) { return 0; }
1187                         if ($keyword eq "WHIRLPOOL" && $no_whirlpool) { return 0; }
1188                         if ($keyword eq "RSA" && $no_rsa) { return 0; }
1189                         if ($keyword eq "DSA" && $no_dsa) { return 0; }
1190                         if ($keyword eq "DH" && $no_dh) { return 0; }
1191                         if ($keyword eq "EC" && $no_ec) { return 0; }
1192                         if ($keyword eq "ECDSA" && $no_ecdsa) { return 0; }
1193                         if ($keyword eq "ECDH" && $no_ecdh) { return 0; }
1194                         if ($keyword eq "HMAC" && $no_hmac) { return 0; }
1195                         if ($keyword eq "AES" && $no_aes) { return 0; }
1196                         if ($keyword eq "CAMELLIA" && $no_camellia) { return 0; }
1197                         if ($keyword eq "SEED" && $no_seed) { return 0; }
1198                         if ($keyword eq "EVP" && $no_evp) { return 0; }
1199                         if ($keyword eq "LHASH" && $no_lhash) { return 0; }
1200                         if ($keyword eq "STACK" && $no_stack) { return 0; }
1201                         if ($keyword eq "ERR" && $no_err) { return 0; }
1202                         if ($keyword eq "BUFFER" && $no_buffer) { return 0; }
1203                         if ($keyword eq "BIO" && $no_bio) { return 0; }
1204                         if ($keyword eq "COMP" && $no_comp) { return 0; }
1205                         if ($keyword eq "DSO" && $no_dso) { return 0; }
1206                         if ($keyword eq "KRB5" && $no_krb5) { return 0; }
1207                         if ($keyword eq "ENGINE" && $no_engine) { return 0; }
1208                         if ($keyword eq "HW" && $no_hw) { return 0; }
1209                         if ($keyword eq "FP_API" && $no_fp_api) { return 0; }
1210                         if ($keyword eq "STATIC_ENGINE" && $no_static_engine) { return 0; }
1211                         if ($keyword eq "GMP" && $no_gmp) { return 0; }
1212                         if ($keyword eq "RFC3779" && $no_rfc3779) { return 0; }
1213                         if ($keyword eq "TLSEXT" && $no_tlsext) { return 0; }
1214                         if ($keyword eq "PSK" && $no_psk) { return 0; }
1215                         if ($keyword eq "CMS" && $no_cms) { return 0; }
1216                         if ($keyword eq "EC_NISTP_64_GCC_128" && $no_nistp_gcc)
1217                                         { return 0; }
1218                         if ($keyword eq "EC2M" && $no_ec2m) { return 0; }
1219                         if ($keyword eq "NEXTPROTONEG" && $no_nextprotoneg) { return 0; }
1220                         if ($keyword eq "SSL3_METHOD" && $no_ssl3_method) { return 0; }
1221                         if ($keyword eq "SSL_TRACE" && $no_ssl_trace) { return 0; }
1222                         if ($keyword eq "CAPIENG" && $no_capieng) { return 0; }
1223                         if ($keyword eq "JPAKE" && $no_jpake) { return 0; }
1224                         if ($keyword eq "SRP" && $no_srp) { return 0; }
1225                         if ($keyword eq "SCTP" && $no_sctp) { return 0; }
1226                         if ($keyword eq "SRTP" && $no_srtp) { return 0; }
1227                         if ($keyword eq "UNIT_TEST" && $no_unit_test) { return 0; }
1228                         if ($keyword eq "DEPRECATED" && $no_deprecated) { return 0; }
1229
1230                         # Nothing recognise as true
1231                         return 1;
1232                 }
1233         }
1234
1235         foreach $k (@keywords) {
1236                 if ($k =~ /^!(.*)$/) {
1237                         $falsesum += &recognise($1,$platforms);
1238                 } else {
1239                         $truesum *= &recognise($k,$platforms);
1240                 }
1241         }
1242         print STDERR "DEBUG: [",$#keywords,",",$#keywords < 0,"] is_valid($keywords_txt) => (\!$falsesum) && $truesum = ",(!$falsesum) && $truesum,"\n" if $debug;
1243         return (!$falsesum) && $truesum;
1244 }
1245
1246 sub print_test_file
1247 {
1248         (*OUT,my $name,*nums,my $testall,my @symbols)=@_;
1249         my $n = 1; my @e; my @r;
1250         my $sym; my $prev = ""; my $prefSSLeay;
1251
1252         (@e)=grep(/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1253         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:.*/ && !/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1254         @symbols=((sort @e),(sort @r));
1255
1256         foreach $sym (@symbols) {
1257                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1258                 my $v = 0;
1259                 $v = 1 if $i=~ /^.*?:.*?:VARIABLE/;
1260                 my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1261                 my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1262                 if (!defined($nums{$s})) {
1263                         print STDERR "Warning: $s does not have a number assigned\n"
1264                             if(!$do_update);
1265                 } elsif (is_valid($p,1) && is_valid($a,0)) {
1266                         my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1267                         if ($prev eq $s2) {
1268                                 print OUT "\t/* The following has already appeared previously */\n";
1269                                 print STDERR "Warning: Symbol '",$s2,"' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1270                         }
1271                         $prev = $s2;    # To warn about duplicates...
1272
1273                         ($nn,$ni)=($nums{$s2} =~ /^(.*?)\\(.*)$/);
1274                         if ($v) {
1275                                 print OUT "\textern int $s2; /* type unknown */ /* $nn $ni */\n";
1276                         } else {
1277                                 print OUT "\textern int $s2(); /* type unknown */ /* $nn $ni */\n";
1278                         }
1279                 }
1280         }
1281 }
1282
1283 sub get_version {
1284    local *MF;
1285    my $v = '?';
1286    open MF, 'Makefile' or return $v;
1287    while (<MF>) {
1288      $v = $1, last if /^VERSION=(.*?)\s*$/;
1289    }
1290    close MF;
1291    return $v;
1292 }
1293
1294 sub print_def_file
1295 {
1296         (*OUT,my $name,*nums,my @symbols)=@_;
1297         my $n = 1; my @e; my @r; my @v; my $prev="";
1298         my $liboptions="";
1299         my $libname = $name;
1300         my $http_vendor = 'www.openssl.org/';
1301         my $version = get_version();
1302         my $what = "OpenSSL: implementation of Secure Socket Layer";
1303         my $description = "$what $version, $name - http://$http_vendor";
1304
1305         if ($W32)
1306                 { $libname.="32"; }
1307         elsif ($OS2)
1308                 { # DLL names should not clash on the whole system.
1309                   # However, they should not have any particular relationship
1310                   # to the name of the static library.  Chose descriptive names
1311                   # (must be at most 8 chars).
1312                   my %translate = (ssl => 'open_ssl', crypto => 'cryptssl');
1313                   $libname = $translate{$name} || $name;
1314                   $liboptions = <<EOO;
1315 INITINSTANCE
1316 DATA MULTIPLE NONSHARED
1317 EOO
1318                   # Vendor field can't contain colon, drat; so we omit http://
1319                   $description = "\@#$http_vendor:$version#\@$what; DLL for library $name.  Build for EMX -Zmtd";
1320                 }
1321
1322         print OUT <<"EOF";
1323 ;
1324 ; Definition file for the DLL version of the $name library from OpenSSL
1325 ;
1326
1327 LIBRARY         $libname        $liboptions
1328
1329 EOF
1330
1331         print "EXPORTS\n";
1332
1333         (@e)=grep(/^SSLeay(\{[0-9]+\})?\\.*?:.*?:FUNCTION/,@symbols);
1334         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:FUNCTION/ && !/^SSLeay(\{[0-9]+\})?\\.*?:.*?:FUNCTION/,@symbols);
1335         (@v)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:VARIABLE/,@symbols);
1336         @symbols=((sort @e),(sort @r), (sort @v));
1337
1338
1339         foreach $sym (@symbols) {
1340                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1341                 my $v = 0;
1342                 $v = 1 if $i =~ /^.*?:.*?:VARIABLE/;
1343                 if (!defined($nums{$s})) {
1344                         printf STDERR "Warning: $s does not have a number assigned\n"
1345                             if(!$do_update);
1346                 } else {
1347                         (my $n, my $dummy) = split /\\/, $nums{$s};
1348                         my %pf = ();
1349                         my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1350                         my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1351                         if (is_valid($p,1) && is_valid($a,0)) {
1352                                 my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1353                                 if ($prev eq $s2) {
1354                                         print STDERR "Warning: Symbol '",$s2,"' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1355                                 }
1356                                 $prev = $s2;    # To warn about duplicates...
1357                                 if($v && !$OS2) {
1358                                         printf OUT "    %s%-39s @%-8d DATA\n",($W32)?"":"_",$s2,$n;
1359                                 } else {
1360                                         printf OUT "    %s%-39s @%d\n",($W32||$OS2)?"":"_",$s2,$n;
1361                                 }
1362                         }
1363                 }
1364         }
1365         printf OUT "\n";
1366 }
1367
1368 sub load_numbers
1369 {
1370         my($name)=@_;
1371         my(@a,%ret);
1372
1373         $max_num = 0;
1374         $num_noinfo = 0;
1375         $prev = "";
1376         $prev_cnt = 0;
1377
1378         open(IN,"<$name") || die "unable to open $name:$!\n";
1379         while (<IN>) {
1380                 chop;
1381                 s/#.*$//;
1382                 next if /^\s*$/;
1383                 @a=split;
1384                 if (defined $ret{$a[0]}) {
1385                         # This is actually perfectly OK
1386                         #print STDERR "Warning: Symbol '",$a[0],"' redefined. old=",$ret{$a[0]},", new=",$a[1],"\n";
1387                 }
1388                 if ($max_num > $a[1]) {
1389                         print STDERR "Warning: Number decreased from ",$max_num," to ",$a[1],"\n";
1390                 }
1391                 elsif ($max_num == $a[1]) {
1392                         # This is actually perfectly OK
1393                         #print STDERR "Warning: Symbol ",$a[0]," has same number as previous ",$prev,": ",$a[1],"\n";
1394                         if ($a[0] eq $prev) {
1395                                 $prev_cnt++;
1396                                 $a[0] .= "{$prev_cnt}";
1397                         }
1398                 }
1399                 else {
1400                         $prev_cnt = 0;
1401                 }
1402                 if ($#a < 2) {
1403                         # Existence will be proven later, in do_defs
1404                         $ret{$a[0]}=$a[1];
1405                         $num_noinfo++;
1406                 } else {
1407                         $ret{$a[0]}=$a[1]."\\".$a[2]; # \\ is a special marker
1408                 }
1409                 $max_num = $a[1] if $a[1] > $max_num;
1410                 $prev=$a[0];
1411         }
1412         if ($num_noinfo) {
1413                 print STDERR "Warning: $num_noinfo symbols were without info.";
1414                 if ($do_rewrite) {
1415                         printf STDERR "  The rewrite will fix this.\n";
1416                 } else {
1417                         printf STDERR "  You should do a rewrite to fix this.\n";
1418                 }
1419         }
1420         close(IN);
1421         return(%ret);
1422 }
1423
1424 sub parse_number
1425 {
1426         (my $str, my $what) = @_;
1427         (my $n, my $i) = split(/\\/,$str);
1428         if ($what eq "n") {
1429                 return $n;
1430         } else {
1431                 return $i;
1432         }
1433 }
1434
1435 sub rewrite_numbers
1436 {
1437         (*OUT,$name,*nums,@symbols)=@_;
1438         my $thing;
1439
1440         print STDERR "Rewriting $name\n";
1441
1442         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1443         my $r; my %r; my %rsyms;
1444         foreach $r (@r) {
1445                 (my $s, my $i) = split /\\/, $r;
1446                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1447                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1448                 $r{$a} = $s."\\".$i;
1449                 $rsyms{$s} = 1;
1450         }
1451
1452         my %syms = ();
1453         foreach $_ (@symbols) {
1454                 (my $n, my $i) = split /\\/;
1455                 $syms{$n} = 1;
1456         }
1457
1458         my @s=sort {
1459             &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n")
1460             || $a cmp $b
1461         } keys %nums;
1462         foreach $sym (@s) {
1463                 (my $n, my $i) = split /\\/, $nums{$sym};
1464                 next if defined($i) && $i =~ /^.*?:.*?:\w+\(\w+\)/;
1465                 next if defined($rsyms{$sym});
1466                 print STDERR "DEBUG: rewrite_numbers for sym = ",$sym,": i = ",$i,", n = ",$n,", rsym{sym} = ",$rsyms{$sym},"syms{sym} = ",$syms{$sym},"\n" if $debug;
1467                 $i="NOEXIST::FUNCTION:"
1468                         if !defined($i) || $i eq "" || !defined($syms{$sym});
1469                 my $s2 = $sym;
1470                 $s2 =~ s/\{[0-9]+\}$//;
1471                 printf OUT "%s%-39s %d\t%s\n","",$s2,$n,$i;
1472                 if (exists $r{$sym}) {
1473                         (my $s, $i) = split /\\/,$r{$sym};
1474                         my $s2 = $s;
1475                         $s2 =~ s/\{[0-9]+\}$//;
1476                         printf OUT "%s%-39s %d\t%s\n","",$s2,$n,$i;
1477                 }
1478         }
1479 }
1480
1481 sub update_numbers
1482 {
1483         (*OUT,$name,*nums,my $start_num, my @symbols)=@_;
1484         my $new_syms = 0;
1485
1486         print STDERR "Updating $name numbers\n";
1487
1488         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1489         my $r; my %r; my %rsyms;
1490         foreach $r (@r) {
1491                 (my $s, my $i) = split /\\/, $r;
1492                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1493                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1494                 $r{$a} = $s."\\".$i;
1495                 $rsyms{$s} = 1;
1496         }
1497
1498         foreach $sym (@symbols) {
1499                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1500                 next if $i =~ /^.*?:.*?:\w+\(\w+\)/;
1501                 next if defined($rsyms{$sym});
1502                 die "ERROR: Symbol $sym had no info attached to it."
1503                     if $i eq "";
1504                 next if $i =~ /OPENSSL_FIPSCAPABLE/;
1505                 if (!exists $nums{$s}) {
1506                         $new_syms++;
1507                         my $s2 = $s;
1508                         $s2 =~ s/\{[0-9]+\}$//;
1509                         printf OUT "%s%-39s %d\t%s\n","",$s2, ++$start_num,$i;
1510                         if (exists $r{$s}) {
1511                                 ($s, $i) = split /\\/,$r{$s};
1512                                 $s =~ s/\{[0-9]+\}$//;
1513                                 printf OUT "%s%-39s %d\t%s\n","",$s, $start_num,$i;
1514                         }
1515                 }
1516         }
1517         if($new_syms) {
1518                 print STDERR "$new_syms New symbols added\n";
1519         } else {
1520                 print STDERR "No New symbols Added\n";
1521         }
1522 }
1523
1524 sub check_existing
1525 {
1526         (*nums, my @symbols)=@_;
1527         my %existing; my @remaining;
1528         @remaining=();
1529         foreach $sym (@symbols) {
1530                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1531                 $existing{$s}=1;
1532         }
1533         foreach $sym (keys %nums) {
1534                 if (!exists $existing{$sym}) {
1535                         push @remaining, $sym;
1536                 }
1537         }
1538         if(@remaining) {
1539                 print STDERR "The following symbols do not seem to exist:\n";
1540                 foreach $sym (@remaining) {
1541                         print STDERR "\t",$sym,"\n";
1542                 }
1543         }
1544 }
1545
1546 sub count_parens
1547 {
1548         my $line = shift(@_);
1549
1550         my $open = $line =~ tr/\(//;
1551         my $close = $line =~ tr/\)//;
1552
1553         return $open - $close;
1554 }
1555