remove ECDH_METHOD typedef
[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 # The format of these files is:
10 #
11 #       routine-name    nnnn    info
12 #
13 # and the "info" part is actually a colon-separated string of fields with
14 # the following meaning:
15 #
16 #       existence:platform:kind:algorithms
17 #
18 # - "existence" can be "EXIST" or "NOEXIST" depending on if the symbol is
19 #   found somewhere in the source, 
20 # - "platforms" is empty if it exists on all platforms, otherwise it contains
21 #   comma-separated list of the platform, just as they are if the symbol exists
22 #   for those platforms, or prepended with a "!" if not.  This helps resolve
23 #   symbol name variants for platforms where the names are too long for the
24 #   compiler or linker, or if the systems is case insensitive and there is a
25 #   clash, or the symbol is implemented differently (see
26 #   EXPORT_VAR_AS_FUNCTION).  This script assumes renaming of symbols is found
27 #   in the file crypto/symhacks.h.
28 #   The semantics for the platforms is that every item is checked against the
29 #   environment.  For the negative items ("!FOO"), if any of them is false
30 #   (i.e. "FOO" is true) in the environment, the corresponding symbol can't be
31 #   used.  For the positive itms, if all of them are false in the environment,
32 #   the corresponding symbol can't be used.  Any combination of positive and
33 #   negative items are possible, and of course leave room for some redundancy.
34 # - "kind" is "FUNCTION" or "VARIABLE".  The meaning of that is obvious.
35 # - "algorithms" is a comma-separated list of algorithm names.  This helps
36 #   exclude symbols that are part of an algorithm that some user wants to
37 #   exclude.
38 #
39
40 my $debug=0;
41
42 my $crypto_num= "util/libeay.num";
43 my $ssl_num=    "util/ssleay.num";
44 my $libname;
45
46 my $do_update = 0;
47 my $do_rewrite = 1;
48 my $do_crypto = 0;
49 my $do_ssl = 0;
50 my $do_ctest = 0;
51 my $do_ctestall = 0;
52 my $do_checkexist = 0;
53
54 my $VMSVAX=0;
55 my $VMSNonVAX=0;
56 my $VMS=0;
57 my $W32=0;
58 my $NT=0;
59 my $OS2=0;
60 # Set this to make typesafe STACK definitions appear in DEF
61 my $safe_stack_def = 0;
62
63 my @known_platforms = ( "__FreeBSD__", "PERL5",
64                         "EXPORT_VAR_AS_FUNCTION", "ZLIB",
65                         "OPENSSL_FIPS", "OPENSSL_FIPSCAPABLE" );
66 my @known_ossl_platforms = ( "VMS", "WIN32", "WINNT", "OS2" );
67 my @known_algorithms = ( "RC2", "RC4", "RC5", "IDEA", "DES", "BF",
68                          "CAST", "MD2", "MD4", "MD5", "SHA", "SHA0", "SHA1",
69                          "SHA256", "SHA512", "RMD160",
70                          "MDC2", "WHIRLPOOL", "RSA", "DSA", "DH", "EC", "ECDH", "ECDSA", "EC2M",
71                          "HMAC", "AES", "CAMELLIA", "SEED", "GOST",
72                          "SCRYPT",
73                          # EC_NISTP_64_GCC_128
74                          "EC_NISTP_64_GCC_128",
75                          # Envelope "algorithms"
76                          "EVP", "X509", "ASN1_TYPEDEFS",
77                          # Helper "algorithms"
78                          "BIO", "COMP", "BUFFER", "LHASH", "STACK", "ERR",
79                          "LOCKING",
80                          # External "algorithms"
81                          "FP_API", "STDIO", "SOCK", "DGRAM",
82                          # Engines
83                          "STATIC_ENGINE", "ENGINE", "HW", "GMP",
84                          # X.509v3 Signed Certificate Timestamps
85                          "SCT",
86                          # RFC3779
87                          "RFC3779",
88                          # TLS
89                          "PSK", "SRP", "HEARTBEATS",
90                          # CMS
91                          "CMS",
92                          # CryptoAPI Engine
93                          "CAPIENG",
94                          # SSL v3 method
95                          "SSL3_METHOD",
96                          # JPAKE
97                          "JPAKE",
98                          # NEXTPROTONEG
99                          "NEXTPROTONEG",
100                          # Deprecated functions
101                          "DEPRECATED",
102                          # SCTP
103                          "SCTP",
104                          # SRTP
105                          "SRTP",
106                          # SSL TRACE
107                          "SSL_TRACE",
108                          # Unit testing
109                          "UNIT_TEST",
110                          # OCB mode
111                          "OCB",
112                          # APPLINK (win build feature?)
113                          "APPLINK"
114                      );
115
116 my $options="";
117 open(IN,"<Makefile") || die "unable to open Makefile!\n";
118 while(<IN>) {
119     $options=$1 if (/^OPTIONS=(.*)$/);
120 }
121 close(IN);
122
123 # The following ciphers may be excluded (by Configure). This means functions
124 # defined with ifndef(NO_XXX) are not included in the .def file, and everything
125 # in directory xxx is ignored.
126 my $no_rc2; my $no_rc4; my $no_rc5; my $no_idea; my $no_des; my $no_bf;
127 my $no_cast; my $no_whirlpool; my $no_camellia; my $no_seed;
128 my $no_md2; my $no_md4; my $no_md5; my $no_sha; my $no_ripemd; my $no_mdc2;
129 my $no_rsa; my $no_dsa; my $no_dh; my $no_aes; my $no_scrypt;
130 my $no_ec; my $no_ecdsa; my $no_ecdh; my $no_engine; my $no_hw;
131 my $no_fp_api; my $no_static_engine=1; my $no_gmp; my $no_deprecated;
132 my $no_sct; my $no_rfc3779; my $no_psk; my $no_cms; my $no_capieng;
133 my $no_jpake; my $no_srp; my $no_ec2m; my $no_nistp_gcc; 
134 my $no_nextprotoneg; my $no_sctp; my $no_srtp; my $no_ssl_trace;
135 my $no_unit_test; my $no_ssl3_method; my $no_ocb;
136
137 my $fips;
138
139 my $zlib;
140
141
142 foreach (@ARGV, split(/ /, $options))
143         {
144         $debug=1 if $_ eq "debug";
145         $W32=1 if $_ eq "32";
146         die "win16 not supported" if $_ eq "16";
147         if($_ eq "NT") {
148                 $W32 = 1;
149                 $NT = 1;
150         }
151         if ($_ eq "VMS-VAX") {
152                 $VMS=1;
153                 $VMSVAX=1;
154         }
155         if ($_ eq "VMS-NonVAX") {
156                 $VMS=1;
157                 $VMSNonVAX=1;
158         }
159         $VMS=1 if $_ eq "VMS";
160         $OS2=1 if $_ eq "OS2";
161         $fips=1 if /^fips/;
162         if ($_ eq "zlib" || $_ eq "enable-zlib" || $_ eq "zlib-dynamic"
163                          || $_ eq "enable-zlib-dynamic") {
164                 $zlib = 1;
165         }
166
167         $do_ssl=1 if $_ eq "ssleay";
168         if ($_ eq "ssl") {
169                 $do_ssl=1; 
170                 $libname=$_
171         }
172         $do_crypto=1 if $_ eq "libeay";
173         if ($_ eq "crypto") {
174                 $do_crypto=1;
175                 $libname=$_;
176         }
177         $no_static_engine=1 if $_ eq "no-static-engine";
178         $no_static_engine=0 if $_ eq "enable-static-engine";
179         $do_update=1 if $_ eq "update";
180         $do_rewrite=1 if $_ eq "rewrite";
181         $do_ctest=1 if $_ eq "ctest";
182         $do_ctestall=1 if $_ eq "ctestall";
183         $do_checkexist=1 if $_ eq "exist";
184         #$safe_stack_def=1 if $_ eq "-DDEBUG_SAFESTACK";
185
186         if    (/^no-rc2$/)      { $no_rc2=1; }
187         elsif (/^no-rc4$/)      { $no_rc4=1; }
188         elsif (/^no-rc5$/)      { $no_rc5=1; }
189         elsif (/^no-idea$/)     { $no_idea=1; }
190         elsif (/^no-des$/)      { $no_des=1; $no_mdc2=1; }
191         elsif (/^no-bf$/)       { $no_bf=1; }
192         elsif (/^no-cast$/)     { $no_cast=1; }
193         elsif (/^no-whirlpool$/)     { $no_whirlpool=1; }
194         elsif (/^no-md2$/)      { $no_md2=1; }
195         elsif (/^no-md4$/)      { $no_md4=1; }
196         elsif (/^no-md5$/)      { $no_md5=1; }
197         elsif (/^no-sha$/)      { $no_sha=1; }
198         elsif (/^no-ripemd$/)   { $no_ripemd=1; }
199         elsif (/^no-mdc2$/)     { $no_mdc2=1; }
200         elsif (/^no-rsa$/)      { $no_rsa=1; }
201         elsif (/^no-dsa$/)      { $no_dsa=1; }
202         elsif (/^no-dh$/)       { $no_dh=1; }
203         elsif (/^no-ec$/)       { $no_ec=1; }
204         elsif (/^no-ecdsa$/)    { $no_ecdsa=1; }
205         elsif (/^no-ecdh$/)     { $no_ecdh=1; }
206         elsif (/^no-aes$/)      { $no_aes=1; }
207         elsif (/^no-camellia$/) { $no_camellia=1; }
208         elsif (/^no-seed$/)     { $no_seed=1; }
209         elsif (/^no-scrypt$/)   { $no_scrypt=1; }
210         elsif (/^no-evp$/)      { $no_evp=1; }
211         elsif (/^no-lhash$/)    { $no_lhash=1; }
212         elsif (/^no-stack$/)    { $no_stack=1; }
213         elsif (/^no-err$/)      { $no_err=1; }
214         elsif (/^no-buffer$/)   { $no_buffer=1; }
215         elsif (/^no-bio$/)      { $no_bio=1; }
216         #elsif (/^no-locking$/) { $no_locking=1; }
217         elsif (/^no-comp$/)     { $no_comp=1; }
218         elsif (/^no-dso$/)      { $no_dso=1; }
219         elsif (/^no-engine$/)   { $no_engine=1; }
220         elsif (/^no-hw$/)       { $no_hw=1; }
221         elsif (/^no-gmp$/)      { $no_gmp=1; }
222         elsif (/^no-sct$/)      { $no_sct=1; }
223         elsif (/^no-rfc3779$/)  { $no_rfc3779=1; }
224         elsif (/^no-cms$/)      { $no_cms=1; }
225         elsif (/^no-ec2m$/)     { $no_ec2m=1; }
226         elsif (/^no-ec-nistp224-64-gcc-128$/)   { $no_nistp_gcc=1; }
227         elsif (/^no-nextprotoneg$/)     { $no_nextprotoneg=1; }
228         elsif (/^no-ssl3-method$/) { $no_ssl3_method=1; }
229         elsif (/^no-ssl-trace$/) { $no_ssl_trace=1; }
230         elsif (/^no-capieng$/)  { $no_capieng=1; }
231         elsif (/^no-jpake$/)    { $no_jpake=1; }
232         elsif (/^no-srp$/)      { $no_srp=1; }
233         elsif (/^no-sctp$/)     { $no_sctp=1; }
234         elsif (/^no-srtp$/)     { $no_srtp=1; }
235         elsif (/^no-unit-test$/){ $no_unit_test=1; }
236         elsif (/^no-deprecated$/) { $no_deprecated=1; }
237         elsif (/^no-ocb/){ $no_ocb=1; }
238         }
239
240
241 if (!$libname) { 
242         if ($do_ssl) {
243                 $libname="SSLEAY";
244         }
245         if ($do_crypto) {
246                 $libname="LIBEAY";
247         }
248 }
249
250 # If no platform is given, assume WIN32
251 if ($W32 + $VMS + $OS2 == 0) {
252         $W32 = 1;
253 }
254
255 if (!$do_ssl && !$do_crypto)
256         {
257         print STDERR "usage: $0 ( ssl | crypto ) [ 16 | 32 | NT | OS2 ]\n";
258         exit(1);
259         }
260
261 %ssl_list=&load_numbers($ssl_num);
262 $max_ssl = $max_num;
263 %crypto_list=&load_numbers($crypto_num);
264 $max_crypto = $max_num;
265
266 my $ssl="include/openssl/ssl.h";
267 $ssl.=" include/openssl/tls1.h";
268 $ssl.=" include/openssl/srtp.h";
269
270 my $crypto ="include/openssl/crypto.h";
271 $crypto.=" crypto/include/internal/cryptlib.h";
272 $crypto.=" include/internal/o_dir.h";
273 $crypto.=" include/internal/o_str.h";
274 $crypto.=" include/openssl/des.h" ; # unless $no_des;
275 $crypto.=" include/openssl/idea.h" ; # unless $no_idea;
276 $crypto.=" include/openssl/rc4.h" ; # unless $no_rc4;
277 $crypto.=" include/openssl/rc5.h" ; # unless $no_rc5;
278 $crypto.=" include/openssl/rc2.h" ; # unless $no_rc2;
279 $crypto.=" include/openssl/blowfish.h" ; # unless $no_bf;
280 $crypto.=" include/openssl/cast.h" ; # unless $no_cast;
281 $crypto.=" include/openssl/whrlpool.h" ;
282 $crypto.=" include/openssl/md2.h" ; # unless $no_md2;
283 $crypto.=" include/openssl/md4.h" ; # unless $no_md4;
284 $crypto.=" include/openssl/md5.h" ; # unless $no_md5;
285 $crypto.=" include/openssl/mdc2.h" ; # unless $no_mdc2;
286 $crypto.=" include/openssl/sha.h" ; # unless $no_sha;
287 $crypto.=" include/openssl/ripemd.h" ; # unless $no_ripemd;
288 $crypto.=" include/openssl/aes.h" ; # unless $no_aes;
289 $crypto.=" include/openssl/camellia.h" ; # unless $no_camellia;
290 $crypto.=" include/openssl/seed.h"; # unless $no_seed;
291
292 $crypto.=" include/openssl/bn.h";
293 $crypto.=" include/openssl/rsa.h" ; # unless $no_rsa;
294 $crypto.=" include/openssl/dsa.h" ; # unless $no_dsa;
295 $crypto.=" include/openssl/dh.h" ; # unless $no_dh;
296 $crypto.=" include/openssl/ec.h" ; # unless $no_ec;
297 $crypto.=" include/openssl/ecdsa.h" ; # unless $no_ecdsa;
298 $crypto.=" include/openssl/ecdh.h" ; # unless $no_ecdh;
299 $crypto.=" include/openssl/hmac.h" ; # unless $no_hmac;
300 $crypto.=" include/openssl/cmac.h" ;
301
302 $crypto.=" include/openssl/engine.h"; # unless $no_engine;
303 $crypto.=" include/openssl/stack.h" ; # unless $no_stack;
304 $crypto.=" include/openssl/buffer.h" ; # unless $no_buffer;
305 $crypto.=" include/openssl/bio.h" ; # unless $no_bio;
306 $crypto.=" include/openssl/dso.h" ; # unless $no_dso;
307 $crypto.=" include/openssl/lhash.h" ; # unless $no_lhash;
308 $crypto.=" include/openssl/conf.h";
309 $crypto.=" include/openssl/txt_db.h";
310
311 $crypto.=" include/openssl/evp.h" ; # unless $no_evp;
312 $crypto.=" include/openssl/objects.h";
313 $crypto.=" include/openssl/pem.h";
314 #$crypto.=" include/openssl/meth.h";
315 $crypto.=" include/openssl/asn1.h";
316 $crypto.=" include/openssl/asn1t.h";
317 $crypto.=" include/openssl/err.h" ; # unless $no_err;
318 $crypto.=" include/openssl/pkcs7.h";
319 $crypto.=" include/openssl/pkcs12.h";
320 $crypto.=" include/openssl/x509.h";
321 $crypto.=" include/openssl/x509_vfy.h";
322 $crypto.=" include/openssl/x509v3.h";
323 $crypto.=" include/openssl/ts.h";
324 $crypto.=" include/openssl/rand.h";
325 $crypto.=" include/openssl/comp.h" ; # unless $no_comp;
326 $crypto.=" include/openssl/ocsp.h";
327 $crypto.=" include/openssl/ui.h";
328 #$crypto.=" include/openssl/store.h";
329 $crypto.=" include/openssl/pqueue.h";
330 $crypto.=" include/openssl/cms.h";
331 $crypto.=" include/openssl/jpake.h";
332 $crypto.=" include/openssl/srp.h";
333 $crypto.=" include/openssl/modes.h";
334 $crypto.=" include/openssl/async.h";
335
336 my $symhacks="include/openssl/symhacks.h";
337
338 my @ssl_symbols = &do_defs("SSLEAY", $ssl, $symhacks);
339 my @crypto_symbols = &do_defs("LIBEAY", $crypto, $symhacks);
340
341 if ($do_update) {
342
343 if ($do_ssl == 1) {
344
345         &maybe_add_info("SSLEAY",*ssl_list,@ssl_symbols);
346         if ($do_rewrite == 1) {
347                 open(OUT, ">$ssl_num");
348                 &rewrite_numbers(*OUT,"SSLEAY",*ssl_list,@ssl_symbols);
349         } else {
350                 open(OUT, ">>$ssl_num");
351         }
352         &update_numbers(*OUT,"SSLEAY",*ssl_list,$max_ssl,@ssl_symbols);
353         close OUT;
354 }
355
356 if($do_crypto == 1) {
357
358         &maybe_add_info("LIBEAY",*crypto_list,@crypto_symbols);
359         if ($do_rewrite == 1) {
360                 open(OUT, ">$crypto_num");
361                 &rewrite_numbers(*OUT,"LIBEAY",*crypto_list,@crypto_symbols);
362         } else {
363                 open(OUT, ">>$crypto_num");
364         }
365         &update_numbers(*OUT,"LIBEAY",*crypto_list,$max_crypto,@crypto_symbols);
366         close OUT;
367
368
369 } elsif ($do_checkexist) {
370         &check_existing(*ssl_list, @ssl_symbols)
371                 if $do_ssl == 1;
372         &check_existing(*crypto_list, @crypto_symbols)
373                 if $do_crypto == 1;
374 } elsif ($do_ctest || $do_ctestall) {
375
376         print <<"EOF";
377
378 /* Test file to check all DEF file symbols are present by trying
379  * to link to all of them. This is *not* intended to be run!
380  */
381
382 int main()
383 {
384 EOF
385         &print_test_file(*STDOUT,"SSLEAY",*ssl_list,$do_ctestall,@ssl_symbols)
386                 if $do_ssl == 1;
387
388         &print_test_file(*STDOUT,"LIBEAY",*crypto_list,$do_ctestall,@crypto_symbols)
389                 if $do_crypto == 1;
390
391         print "}\n";
392
393 } else {
394
395         &print_def_file(*STDOUT,$libname,*ssl_list,@ssl_symbols)
396                 if $do_ssl == 1;
397
398         &print_def_file(*STDOUT,$libname,*crypto_list,@crypto_symbols)
399                 if $do_crypto == 1;
400
401 }
402
403
404 sub do_defs
405 {
406         my($name,$files,$symhacksfile)=@_;
407         my $file;
408         my @ret;
409         my %syms;
410         my %platform;           # For anything undefined, we assume ""
411         my %kind;               # For anything undefined, we assume "FUNCTION"
412         my %algorithm;          # For anything undefined, we assume ""
413         my %variant;
414         my %variant_cnt;        # To be able to allocate "name{n}" if "name"
415                                 # is the same name as the original.
416         my $cpp;
417         my %unknown_algorithms = ();
418         my $parens = 0;
419
420         foreach $file (split(/\s+/,$symhacksfile." ".$files))
421                 {
422                 print STDERR "DEBUG: starting on $file:\n" if $debug;
423                 open(IN,"<$file") || die "unable to open $file:$!\n";
424                 my $line = "", my $def= "";
425                 my %tag = (
426                         (map { $_ => 0 } @known_platforms),
427                         (map { "OPENSSL_SYS_".$_ => 0 } @known_ossl_platforms),
428                         (map { "OPENSSL_NO_".$_ => 0 } @known_algorithms),
429                         (map { "OPENSSL_USE_".$_ => 0 } @known_algorithms),
430                         NOPROTO         => 0,
431                         PERL5           => 0,
432                         _WINDLL         => 0,
433                         CONST_STRICT    => 0,
434                         TRUE            => 1,
435                 );
436                 my $symhacking = $file eq $symhacksfile;
437                 my @current_platforms = ();
438                 my @current_algorithms = ();
439
440                 # params: symbol, alias, platforms, kind
441                 # The reason to put this subroutine in a variable is that
442                 # it will otherwise create it's own, unshared, version of
443                 # %tag and %variant...
444                 my $make_variant = sub
445                 {
446                         my ($s, $a, $p, $k) = @_;
447                         my ($a1, $a2);
448
449                         print STDERR "DEBUG: make_variant: Entered with ",$s,", ",$a,", ",(defined($p)?$p:""),", ",(defined($k)?$k:""),"\n" if $debug;
450                         if (defined($p))
451                         {
452                                 $a1 = join(",",$p,
453                                            grep(!/^$/,
454                                                 map { $tag{$_} == 1 ? $_ : "" }
455                                                 @known_platforms));
456                         }
457                         else
458                         {
459                                 $a1 = join(",",
460                                            grep(!/^$/,
461                                                 map { $tag{$_} == 1 ? $_ : "" }
462                                                 @known_platforms));
463                         }
464                         $a2 = join(",",
465                                    grep(!/^$/,
466                                         map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ : "" }
467                                         @known_ossl_platforms));
468                         print STDERR "DEBUG: make_variant: a1 = $a1; a2 = $a2\n" if $debug;
469                         if ($a1 eq "") { $a1 = $a2; }
470                         elsif ($a1 ne "" && $a2 ne "") { $a1 .= ",".$a2; }
471                         if ($a eq $s)
472                         {
473                                 if (!defined($variant_cnt{$s}))
474                                 {
475                                         $variant_cnt{$s} = 0;
476                                 }
477                                 $variant_cnt{$s}++;
478                                 $a .= "{$variant_cnt{$s}}";
479                         }
480                         my $toadd = $a.":".$a1.(defined($k)?":".$k:"");
481                         my $togrep = $s.'(\{[0-9]+\})?:'.$a1.(defined($k)?":".$k:"");
482                         if (!grep(/^$togrep$/,
483                                   split(/;/, defined($variant{$s})?$variant{$s}:""))) {
484                                 if (defined($variant{$s})) { $variant{$s} .= ";"; }
485                                 $variant{$s} .= $toadd;
486                         }
487                         print STDERR "DEBUG: make_variant: Exit with variant of ",$s," = ",$variant{$s},"\n" if $debug;
488                 };
489
490                 print STDERR "DEBUG: parsing ----------\n" if $debug;
491                 while(<IN>) {
492                         if($parens > 0) {
493                                 #Inside a DECLARE_DEPRECATED
494                                 $stored_multiline .= $_;
495                                 chomp $stored_multiline;
496                                 print STDERR "DEBUG: Continuing multiline DEPRECATED: $stored_multiline\n" if $debug;
497                                 $parens = count_parens($stored_multiline);
498                                 if ($parens == 0) {
499                                         $stored_multiline =~ /^\s*DECLARE_DEPRECATED\s*\(\s*(\w*(\s|\*|\w)*)/;
500                                         $def .= "$1(void);";
501                                 }
502                                 next;
503                         }
504                         if (/\/\* Error codes for the \w+ functions\. \*\//)
505                                 {
506                                 undef @tag;
507                                 last;
508                                 }
509                         if ($line ne '') {
510                                 $_ = $line . $_;
511                                 $line = '';
512                         }
513
514                         if (/\\$/) {
515                                 chomp; # remove eol
516                                 chop; # remove ending backslash
517                                 $line = $_;
518                                 next;
519                         }
520
521                         if(/\/\*/) {
522                                 if (not /\*\//) {       # multiline comment...
523                                         $line = $_;     # ... just accumulate
524                                         next;
525                                 } else {
526                                         s/\/\*.*?\*\///gs;# wipe it
527                                 }
528                         }
529
530                         if ($cpp) {
531                                 $cpp++ if /^#\s*if/;
532                                 $cpp-- if /^#\s*endif/;
533                                 next;
534                         }
535                         $cpp = 1 if /^#.*ifdef.*cplusplus/;
536
537                         s/{[^{}]*}//gs;                      # ignore {} blocks
538                         print STDERR "DEBUG: \$def=\"$def\"\n" if $debug && $def ne "";
539                         print STDERR "DEBUG: \$_=\"$_\"\n" if $debug;
540                         if (/^\#\s*ifndef\s+(.*)/) {
541                                 push(@tag,"-");
542                                 push(@tag,$1);
543                                 $tag{$1}=-1;
544                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
545                         } elsif (/^\#\s*if\s+!defined\(([^\)]+)\)/) {
546                                 push(@tag,"-");
547                                 if (/^\#\s*if\s+(!defined\(([^\)]+)\)(\s+\&\&\s+!defined\(([^\)]+)\))*)$/) {
548                                         my $tmp_1 = $1;
549                                         my $tmp_;
550                                         foreach $tmp_ (split '\&\&',$tmp_1) {
551                                                 $tmp_ =~ /!defined\(([^\)]+)\)/;
552                                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
553                                                 push(@tag,$1);
554                                                 $tag{$1}=-1;
555                                         }
556                                 } else {
557                                         print STDERR "Warning: $file: complicated expression: $_" if $debug; # because it is O...
558                                         print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
559                                         push(@tag,$1);
560                                         $tag{$1}=-1;
561                                 }
562                         } elsif (/^\#\s*ifdef\s+(\S*)/) {
563                                 push(@tag,"-");
564                                 push(@tag,$1);
565                                 $tag{$1}=1;
566                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
567                         } elsif (/^\#\s*if\s+defined\(([^\)]+)\)/) {
568                                 push(@tag,"-");
569                                 if (/^\#\s*if\s+(defined\(([^\)]+)\)(\s+\|\|\s+defined\(([^\)]+)\))*)$/) {
570                                         my $tmp_1 = $1;
571                                         my $tmp_;
572                                         foreach $tmp_ (split '\|\|',$tmp_1) {
573                                                 $tmp_ =~ /defined\(([^\)]+)\)/;
574                                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
575                                                 push(@tag,$1);
576                                                 $tag{$1}=1;
577                                         }
578                                 } else {
579                                         print STDERR "Warning: $file: complicated expression: $_\n" if $debug; # because it is O...
580                                         print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
581                                         push(@tag,$1);
582                                         $tag{$1}=1;
583                                 }
584                         } elsif (/^\#\s*error\s+(\w+) is disabled\./) {
585                                 my $tag_i = $#tag;
586                                 while($tag[$tag_i] ne "-") {
587                                         if ($tag[$tag_i] eq "OPENSSL_NO_".$1) {
588                                                 $tag{$tag[$tag_i]}=2;
589                                                 print STDERR "DEBUG: $file: chaged tag $1 = 2\n" if $debug;
590                                         }
591                                         $tag_i--;
592                                 }
593                         } elsif (/^\#\s*endif/) {
594                                 my $tag_i = $#tag;
595                                 while($tag_i > 0 && $tag[$tag_i] ne "-") {
596                                         my $t=$tag[$tag_i];
597                                         print STDERR "DEBUG: \$t=\"$t\"\n" if $debug;
598                                         if ($tag{$t}==2) {
599                                                 $tag{$t}=-1;
600                                         } else {
601                                                 $tag{$t}=0;
602                                         }
603                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
604                                         pop(@tag);
605                                         if ($t =~ /^OPENSSL_NO_([A-Z0-9_]+)$/) {
606                                                 $t=$1;
607                                         } elsif($t =~ /^OPENSSL_USE_([A-Z0-9_]+)$/) {
608                                                 $t=$1;
609                                         } else {
610                                                 $t="";
611                                         }
612                                         if ($t ne ""
613                                             && !grep(/^$t$/, @known_algorithms)) {
614                                                 $unknown_algorithms{$t} = 1;
615                                                 #print STDERR "DEBUG: Added as unknown algorithm: $t\n" if $debug;
616                                         }
617                                         $tag_i--;
618                                 }
619                                 pop(@tag);
620                         } elsif (/^\#\s*else/) {
621                                 my $tag_i = $#tag;
622                                 while($tag[$tag_i] ne "-") {
623                                         my $t=$tag[$tag_i];
624                                         $tag{$t}= -$tag{$t};
625                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
626                                         $tag_i--;
627                                 }
628                         } elsif (/^\#\s*if\s+1/) {
629                                 push(@tag,"-");
630                                 # Dummy tag
631                                 push(@tag,"TRUE");
632                                 $tag{"TRUE"}=1;
633                                 print STDERR "DEBUG: $file: found 1\n" if $debug;
634                         } elsif (/^\#\s*if\s+0/) {
635                                 push(@tag,"-");
636                                 # Dummy tag
637                                 push(@tag,"TRUE");
638                                 $tag{"TRUE"}=-1;
639                                 print STDERR "DEBUG: $file: found 0\n" if $debug;
640                         } elsif (/^\#\s*define\s+(\w+)\s+(\w+)/
641                                  && $symhacking && $tag{'TRUE'} != -1) {
642                                 # This is for aliasing.  When we find an alias,
643                                 # we have to invert
644                                 &$make_variant($1,$2);
645                                 print STDERR "DEBUG: $file: defined $1 = $2\n" if $debug;
646                         }
647                         if (/^\#/) {
648                                 @current_platforms =
649                                     grep(!/^$/,
650                                          map { $tag{$_} == 1 ? $_ :
651                                                    $tag{$_} == -1 ? "!".$_  : "" }
652                                          @known_platforms);
653                                 push @current_platforms
654                                     , grep(!/^$/,
655                                            map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ :
656                                                      $tag{"OPENSSL_SYS_".$_} == -1 ? "!".$_  : "" }
657                                            @known_ossl_platforms);
658                                 @current_algorithms = ();
659                                 @current_algorithms =
660                                     grep(!/^$/,
661                                          map { $tag{"OPENSSL_NO_".$_} == -1 ? $_ : "" }
662                                          @known_algorithms);
663                                 push @current_algorithms
664                                     , grep(!/^$/,
665                                          map { $tag{"OPENSSL_USE_".$_} == 1 ? $_ : "" }
666                                          @known_algorithms);
667                                 $def .=
668                                     "#INFO:"
669                                         .join(',',@current_platforms).":"
670                                             .join(',',@current_algorithms).";";
671                                 next;
672                         }
673                         if ($tag{'TRUE'} != -1) {
674                                 if (/^\s*DECLARE_STACK_OF\s*\(\s*(\w*)\s*\)/) {
675                                         next;
676                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
677                                         $def .= "int d2i_$3(void);";
678                                         $def .= "int i2d_$3(void);";
679                                         # Variant for platforms that do not
680                                         # have to access globale variables
681                                         # in shared libraries through functions
682                                         $def .=
683                                             "#INFO:"
684                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
685                                                     .join(',',@current_algorithms).";";
686                                         $def .= "OPENSSL_EXTERN int $2_it;";
687                                         $def .=
688                                             "#INFO:"
689                                                 .join(',',@current_platforms).":"
690                                                     .join(',',@current_algorithms).";";
691                                         # Variant for platforms that have to
692                                         # access globale variables in shared
693                                         # libraries through functions
694                                         &$make_variant("$2_it","$2_it",
695                                                       "EXPORT_VAR_AS_FUNCTION",
696                                                       "FUNCTION");
697                                         next;
698                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_fname\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
699                                         $def .= "int d2i_$3(void);";
700                                         $def .= "int i2d_$3(void);";
701                                         $def .= "int $3_free(void);";
702                                         $def .= "int $3_new(void);";
703                                         # Variant for platforms that do not
704                                         # have to access globale variables
705                                         # in shared libraries through functions
706                                         $def .=
707                                             "#INFO:"
708                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
709                                                     .join(',',@current_algorithms).";";
710                                         $def .= "OPENSSL_EXTERN int $2_it;";
711                                         $def .=
712                                             "#INFO:"
713                                                 .join(',',@current_platforms).":"
714                                                     .join(',',@current_algorithms).";";
715                                         # Variant for platforms that have to
716                                         # access globale variables in shared
717                                         # libraries through functions
718                                         &$make_variant("$2_it","$2_it",
719                                                       "EXPORT_VAR_AS_FUNCTION",
720                                                       "FUNCTION");
721                                         next;
722                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS\s*\(\s*(\w*)\s*\)/ ||
723                                          /^\s*DECLARE_ASN1_FUNCTIONS_const\s*\(\s*(\w*)\s*\)/) {
724                                         $def .= "int d2i_$1(void);";
725                                         $def .= "int i2d_$1(void);";
726                                         $def .= "int $1_free(void);";
727                                         $def .= "int $1_new(void);";
728                                         # Variant for platforms that do not
729                                         # have to access globale variables
730                                         # in shared libraries through functions
731                                         $def .=
732                                             "#INFO:"
733                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
734                                                     .join(',',@current_algorithms).";";
735                                         $def .= "OPENSSL_EXTERN int $1_it;";
736                                         $def .=
737                                             "#INFO:"
738                                                 .join(',',@current_platforms).":"
739                                                     .join(',',@current_algorithms).";";
740                                         # Variant for platforms that have to
741                                         # access globale variables in shared
742                                         # libraries through functions
743                                         &$make_variant("$1_it","$1_it",
744                                                       "EXPORT_VAR_AS_FUNCTION",
745                                                       "FUNCTION");
746                                         next;
747                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS_const\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
748                                         $def .= "int d2i_$2(void);";
749                                         $def .= "int i2d_$2(void);";
750                                         # Variant for platforms that do not
751                                         # have to access globale variables
752                                         # in shared libraries through functions
753                                         $def .=
754                                             "#INFO:"
755                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
756                                                     .join(',',@current_algorithms).";";
757                                         $def .= "OPENSSL_EXTERN int $2_it;";
758                                         $def .=
759                                             "#INFO:"
760                                                 .join(',',@current_platforms).":"
761                                                     .join(',',@current_algorithms).";";
762                                         # Variant for platforms that have to
763                                         # access globale variables in shared
764                                         # libraries through functions
765                                         &$make_variant("$2_it","$2_it",
766                                                       "EXPORT_VAR_AS_FUNCTION",
767                                                       "FUNCTION");
768                                         next;
769                                 } elsif (/^\s*DECLARE_ASN1_ALLOC_FUNCTIONS\s*\(\s*(\w*)\s*\)/) {
770                                         $def .= "int $1_free(void);";
771                                         $def .= "int $1_new(void);";
772                                         next;
773                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
774                                         $def .= "int d2i_$2(void);";
775                                         $def .= "int i2d_$2(void);";
776                                         $def .= "int $2_free(void);";
777                                         $def .= "int $2_new(void);";
778                                         # Variant for platforms that do not
779                                         # have to access globale variables
780                                         # in shared libraries through functions
781                                         $def .=
782                                             "#INFO:"
783                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
784                                                     .join(',',@current_algorithms).";";
785                                         $def .= "OPENSSL_EXTERN int $2_it;";
786                                         $def .=
787                                             "#INFO:"
788                                                 .join(',',@current_platforms).":"
789                                                     .join(',',@current_algorithms).";";
790                                         # Variant for platforms that have to
791                                         # access globale variables in shared
792                                         # libraries through functions
793                                         &$make_variant("$2_it","$2_it",
794                                                       "EXPORT_VAR_AS_FUNCTION",
795                                                       "FUNCTION");
796                                         next;
797                                 } elsif (/^\s*DECLARE_ASN1_ITEM\s*\(\s*(\w*)\s*\)/) {
798                                         # Variant for platforms that do not
799                                         # have to access globale variables
800                                         # in shared libraries through functions
801                                         $def .=
802                                             "#INFO:"
803                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
804                                                     .join(',',@current_algorithms).";";
805                                         $def .= "OPENSSL_EXTERN int $1_it;";
806                                         $def .=
807                                             "#INFO:"
808                                                 .join(',',@current_platforms).":"
809                                                     .join(',',@current_algorithms).";";
810                                         # Variant for platforms that have to
811                                         # access globale variables in shared
812                                         # libraries through functions
813                                         &$make_variant("$1_it","$1_it",
814                                                       "EXPORT_VAR_AS_FUNCTION",
815                                                       "FUNCTION");
816                                         next;
817                                 } elsif (/^\s*DECLARE_ASN1_NDEF_FUNCTION\s*\(\s*(\w*)\s*\)/) {
818                                         $def .= "int i2d_$1_NDEF(void);";
819                                 } elsif (/^\s*DECLARE_ASN1_SET_OF\s*\(\s*(\w*)\s*\)/) {
820                                         next;
821                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION\s*\(\s*(\w*)\s*\)/) {
822                                         $def .= "int $1_print_ctx(void);";
823                                         next;
824                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
825                                         $def .= "int $2_print_ctx(void);";
826                                         next;
827                                 } elsif (/^\s*DECLARE_PKCS12_STACK_OF\s*\(\s*(\w*)\s*\)/) {
828                                         next;
829                                 } elsif (/^DECLARE_PEM_rw\s*\(\s*(\w*)\s*,/ ||
830                                          /^DECLARE_PEM_rw_cb\s*\(\s*(\w*)\s*,/ ||
831                                          /^DECLARE_PEM_rw_const\s*\(\s*(\w*)\s*,/ ) {
832                                         $def .=
833                                             "#INFO:"
834                                                 .join(',',@current_platforms).":"
835                                                     .join(',',@current_algorithms).";";
836                                         $def .= "int PEM_read_$1(void);";
837                                         $def .= "int PEM_write_$1(void);";
838                                         $def .=
839                                             "#INFO:"
840                                                 .join(',',@current_platforms).":"
841                                                     .join(',',@current_algorithms).";";
842                                         # Things that are everywhere
843                                         $def .= "int PEM_read_bio_$1(void);";
844                                         $def .= "int PEM_write_bio_$1(void);";
845                                         next;
846                                 } elsif (/^DECLARE_PEM_write\s*\(\s*(\w*)\s*,/ ||
847                                         /^DECLARE_PEM_write_const\s*\(\s*(\w*)\s*,/ ||
848                                          /^DECLARE_PEM_write_cb\s*\(\s*(\w*)\s*,/ ) {
849                                         $def .=
850                                             "#INFO:"
851                                                 .join(',',@current_platforms).":"
852                                                     .join(',',@current_algorithms).";";
853                                         $def .= "int PEM_write_$1(void);";
854                                         $def .=
855                                             "#INFO:"
856                                                 .join(',',@current_platforms).":"
857                                                     .join(',',@current_algorithms).";";
858                                         # Things that are everywhere
859                                         $def .= "int PEM_write_bio_$1(void);";
860                                         next;
861                                 } elsif (/^DECLARE_PEM_read\s*\(\s*(\w*)\s*,/ ||
862                                          /^DECLARE_PEM_read_cb\s*\(\s*(\w*)\s*,/ ) {
863                                         $def .=
864                                             "#INFO:"
865                                                 .join(',',@current_platforms).":"
866                                                     .join(',',@current_algorithms).";";
867                                         $def .= "int PEM_read_$1(void);";
868                                         $def .=
869                                             "#INFO:"
870                                                 .join(',',@current_platforms).":"
871                                                     .join(',',@current_algorithms).";";
872                                         # Things that are everywhere
873                                         $def .= "int PEM_read_bio_$1(void);";
874                                         next;
875                                 } elsif (/^OPENSSL_DECLARE_GLOBAL\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
876                                         # Variant for platforms that do not
877                                         # have to access globale variables
878                                         # in shared libraries through functions
879                                         $def .=
880                                             "#INFO:"
881                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
882                                                     .join(',',@current_algorithms).";";
883                                         $def .= "OPENSSL_EXTERN int _shadow_$2;";
884                                         $def .=
885                                             "#INFO:"
886                                                 .join(',',@current_platforms).":"
887                                                     .join(',',@current_algorithms).";";
888                                         # Variant for platforms that have to
889                                         # access globale variables in shared
890                                         # libraries through functions
891                                         &$make_variant("_shadow_$2","_shadow_$2",
892                                                       "EXPORT_VAR_AS_FUNCTION",
893                                                       "FUNCTION");
894                                 } elsif (/^\s*DECLARE_DEPRECATED\s*\(\s*(\w*(\s|\*|\w)*)/) {
895                                         $parens = count_parens($_);
896                                         if ($parens == 0) {
897                                                 $def .= "$1(void);";
898                                         } else {
899                                                 $stored_multiline = $_;
900                                                 chomp $stored_multiline;
901                                                 print STDERR "DEBUG: Found multiline DEPRECATED starting with: $stored_multiline\n" if $debug;
902                                                 next;
903                                         }
904                                 } elsif ($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                         $a .= ",RMD160" if($s =~ /EVP_ripemd/);
978                         $a .= ",RSA" if($s =~ /EVP_(Open|Seal)(Final|Init)/);
979                         $a .= ",RSA" if($s =~ /PEM_Seal(Final|Init|Update)/);
980                         $a .= ",RSA" if($s =~ /RSAPrivateKey/);
981                         $a .= ",RSA" if($s =~ /SSLv23?_((client|server)_)?method/);
982
983                         $platform{$s} =
984                             &reduce_platforms((defined($platform{$s})?$platform{$s}.',':"").$p);
985                         $algorithm{$s} .= ','.$a;
986
987                         if (defined($variant{$s})) {
988                                 foreach $v (split /;/,$variant{$s}) {
989                                         (my $r, my $p, my $k) = split(/:/,$v);
990                                         my $ip = join ',',map({ /^!(.*)$/ ? $1 : "!".$_ } split /,/, $p);
991                                         $syms{$r} = 1;
992                                         if (!defined($k)) { $k = $kind{$s}; }
993                                         $kind{$r} = $k."(".$s.")";
994                                         $algorithm{$r} = $algorithm{$s};
995                                         $platform{$r} = &reduce_platforms($platform{$s}.",".$p.",".$p);
996                                         $platform{$s} = &reduce_platforms($platform{$s}.','.$ip.','.$ip);
997                                         print STDERR "DEBUG: \$variant{\"$s\"} = ",$v,"; \$r = $r; \$p = ",$platform{$r},"; \$a = ",$algorithm{$r},"; \$kind = ",$kind{$r},"\n" if $debug;
998                                 }
999                         }
1000                         print STDERR "DEBUG: \$s = $s; \$p = ",$platform{$s},"; \$a = ",$algorithm{$s},"; \$kind = ",$kind{$s},"\n" if $debug;
1001                 }
1002         }
1003
1004         # Prune the returned symbols
1005
1006         delete $syms{"bn_dump1"};
1007         $platform{"BIO_s_log"} .= ",!WIN32,!macintosh";
1008
1009         $platform{"PEM_read_NS_CERT_SEQ"} = "VMS";
1010         $platform{"PEM_write_NS_CERT_SEQ"} = "VMS";
1011         $platform{"PEM_read_P8_PRIV_KEY_INFO"} = "VMS";
1012         $platform{"PEM_write_P8_PRIV_KEY_INFO"} = "VMS";
1013         $platform{"EVP_sha384"} = "!VMSVAX";
1014         $platform{"EVP_sha512"} = "!VMSVAX";
1015         $platform{"SHA384_Init"} = "!VMSVAX";
1016         $platform{"SHA384_Transform"} = "!VMSVAX";
1017         $platform{"SHA384_Update"} = "!VMSVAX";
1018         $platform{"SHA384_Final"} = "!VMSVAX";
1019         $platform{"SHA384"} = "!VMSVAX";
1020         $platform{"SHA512_Init"} = "!VMSVAX";
1021         $platform{"SHA512_Transform"} = "!VMSVAX";
1022         $platform{"SHA512_Update"} = "!VMSVAX";
1023         $platform{"SHA512_Final"} = "!VMSVAX";
1024         $platform{"SHA512"} = "!VMSVAX";
1025
1026
1027         # Info we know about
1028
1029         push @ret, map { $_."\\".&info_string($_,"EXIST",
1030                                               $platform{$_},
1031                                               $kind{$_},
1032                                               $algorithm{$_}) } keys %syms;
1033
1034         if (keys %unknown_algorithms) {
1035                 print STDERR "WARNING: mkdef.pl doesn't know the following algorithms:\n";
1036                 print STDERR "\t",join("\n\t",keys %unknown_algorithms),"\n";
1037         }
1038         return(@ret);
1039 }
1040
1041 # Param: string of comma-separated platform-specs.
1042 sub reduce_platforms
1043 {
1044         my ($platforms) = @_;
1045         my $pl = defined($platforms) ? $platforms : "";
1046         my %p = map { $_ => 0 } split /,/, $pl;
1047         my $ret;
1048
1049         print STDERR "DEBUG: Entered reduce_platforms with \"$platforms\"\n"
1050             if $debug;
1051         # We do this, because if there's code like the following, it really
1052         # means the function exists in all cases and should therefore be
1053         # everywhere.  By increasing and decreasing, we may attain 0:
1054         #
1055         # ifndef WIN16
1056         #    int foo();
1057         # else
1058         #    int _fat foo();
1059         # endif
1060         foreach $platform (split /,/, $pl) {
1061                 if ($platform =~ /^!(.*)$/) {
1062                         $p{$1}--;
1063                 } else {
1064                         $p{$platform}++;
1065                 }
1066         }
1067         foreach $platform (keys %p) {
1068                 if ($p{$platform} == 0) { delete $p{$platform}; }
1069         }
1070
1071         delete $p{""};
1072
1073         $ret = join(',',sort(map { $p{$_} < 0 ? "!".$_ : $_ } keys %p));
1074         print STDERR "DEBUG: Exiting reduce_platforms with \"$ret\"\n"
1075             if $debug;
1076         return $ret;
1077 }
1078
1079 sub info_string {
1080         (my $symbol, my $exist, my $platforms, my $kind, my $algorithms) = @_;
1081
1082         my %a = defined($algorithms) ?
1083             map { $_ => 1 } split /,/, $algorithms : ();
1084         my $k = defined($kind) ? $kind : "FUNCTION";
1085         my $ret;
1086         my $p = &reduce_platforms($platforms);
1087
1088         delete $a{""};
1089
1090         $ret = $exist;
1091         $ret .= ":".$p;
1092         $ret .= ":".$k;
1093         $ret .= ":".join(',',sort keys %a);
1094         return $ret;
1095 }
1096
1097 sub maybe_add_info {
1098         (my $name, *nums, my @symbols) = @_;
1099         my $sym;
1100         my $new_info = 0;
1101         my %syms=();
1102
1103         print STDERR "Updating $name info\n";
1104         foreach $sym (@symbols) {
1105                 (my $s, my $i) = split /\\/, $sym;
1106                 if (defined($nums{$s})) {
1107                         $i =~ s/^(.*?:.*?:\w+)(\(\w+\))?/$1/;
1108                         (my $n, my $dummy) = split /\\/, $nums{$s};
1109                         if (!defined($dummy) || $i ne $dummy) {
1110                                 $nums{$s} = $n."\\".$i;
1111                                 $new_info++;
1112                                 print STDERR "DEBUG: maybe_add_info for $s: \"$dummy\" => \"$i\"\n" if $debug;
1113                         }
1114                 }
1115                 $syms{$s} = 1;
1116         }
1117
1118         my @s=sort { &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n") } keys %nums;
1119         foreach $sym (@s) {
1120                 (my $n, my $i) = split /\\/, $nums{$sym};
1121                 if (!defined($syms{$sym}) && $i !~ /^NOEXIST:/) {
1122                         $new_info++;
1123                         print STDERR "DEBUG: maybe_add_info for $sym: -> undefined\n" if $debug;
1124                 }
1125         }
1126         if ($new_info) {
1127                 print STDERR "$new_info old symbols got an info update\n";
1128                 if (!$do_rewrite) {
1129                         print STDERR "You should do a rewrite to fix this.\n";
1130                 }
1131         } else {
1132                 print STDERR "No old symbols needed info update\n";
1133         }
1134 }
1135
1136 # Param: string of comma-separated keywords, each possibly prefixed with a "!"
1137 sub is_valid
1138 {
1139         my ($keywords_txt,$platforms) = @_;
1140         my (@keywords) = split /,/,$keywords_txt;
1141         my ($falsesum, $truesum) = (0, 1);
1142
1143         # Param: one keyword
1144         sub recognise
1145         {
1146                 my ($keyword,$platforms) = @_;
1147
1148                 if ($platforms) {
1149                         # platforms
1150                         if ($keyword eq "VMSVAX" && $VMSVAX) { return 1; }
1151                         if ($keyword eq "VMSNonVAX" && $VMSNonVAX) { return 1; }
1152                         if ($keyword eq "VMS" && $VMS) { return 1; }
1153                         if ($keyword eq "WIN32" && $W32) { return 1; }
1154                         if ($keyword eq "WINNT" && $NT) { return 1; }
1155                         if ($keyword eq "OS2" && $OS2) { return 1; }
1156                         # Special platforms:
1157                         # EXPORT_VAR_AS_FUNCTION means that global variables
1158                         # will be represented as functions.  This currently
1159                         # only happens on VMS-VAX.
1160                         if ($keyword eq "EXPORT_VAR_AS_FUNCTION" && ($VMSVAX || $W32)) {
1161                                 return 1;
1162                         }
1163                         if ($keyword eq "OPENSSL_FIPSCAPABLE") {
1164                                 return 0;
1165                         }
1166                         if ($keyword eq "OPENSSL_FIPS" && $fips) {
1167                                 return 1;
1168                         }
1169                         if ($keyword eq "ZLIB" && $zlib) { return 1; }
1170                         return 0;
1171                 } else {
1172                         # algorithms
1173                         if ($keyword eq "RC2" && $no_rc2) { return 0; }
1174                         if ($keyword eq "RC4" && $no_rc4) { return 0; }
1175                         if ($keyword eq "RC5" && $no_rc5) { return 0; }
1176                         if ($keyword eq "IDEA" && $no_idea) { return 0; }
1177                         if ($keyword eq "DES" && $no_des) { return 0; }
1178                         if ($keyword eq "BF" && $no_bf) { return 0; }
1179                         if ($keyword eq "CAST" && $no_cast) { return 0; }
1180                         if ($keyword eq "MD2" && $no_md2) { return 0; }
1181                         if ($keyword eq "MD4" && $no_md4) { return 0; }
1182                         if ($keyword eq "MD5" && $no_md5) { return 0; }
1183                         if ($keyword eq "SHA" && $no_sha) { return 0; }
1184                         if ($keyword eq "RMD160" && $no_ripemd) { return 0; }
1185                         if ($keyword eq "MDC2" && $no_mdc2) { return 0; }
1186                         if ($keyword eq "WHIRLPOOL" && $no_whirlpool) { return 0; }
1187                         if ($keyword eq "RSA" && $no_rsa) { return 0; }
1188                         if ($keyword eq "DSA" && $no_dsa) { return 0; }
1189                         if ($keyword eq "DH" && $no_dh) { return 0; }
1190                         if ($keyword eq "EC" && $no_ec) { return 0; }
1191                         if ($keyword eq "ECDSA" && $no_ecdsa) { return 0; }
1192                         if ($keyword eq "ECDH" && $no_ecdh) { return 0; }
1193                         if ($keyword eq "AES" && $no_aes) { return 0; }
1194                         if ($keyword eq "CAMELLIA" && $no_camellia) { return 0; }
1195                         if ($keyword eq "SEED" && $no_seed) { return 0; }
1196                         if ($keyword eq "SCRYPT" && $no_scrypt) { return 0; }
1197                         if ($keyword eq "EVP" && $no_evp) { return 0; }
1198                         if ($keyword eq "LHASH" && $no_lhash) { return 0; }
1199                         if ($keyword eq "STACK" && $no_stack) { return 0; }
1200                         if ($keyword eq "ERR" && $no_err) { return 0; }
1201                         if ($keyword eq "BUFFER" && $no_buffer) { return 0; }
1202                         if ($keyword eq "BIO" && $no_bio) { return 0; }
1203                         if ($keyword eq "COMP" && $no_comp) { return 0; }
1204                         if ($keyword eq "DSO" && $no_dso) { return 0; }
1205                         if ($keyword eq "ENGINE" && $no_engine) { return 0; }
1206                         if ($keyword eq "HW" && $no_hw) { return 0; }
1207                         if ($keyword eq "FP_API" && $no_fp_api) { return 0; }
1208                         if ($keyword eq "STATIC_ENGINE" && $no_static_engine) { return 0; }
1209                         if ($keyword eq "GMP" && $no_gmp) { return 0; }
1210                         if ($keyword eq "SCT" && $no_sct) { return 0; }
1211                         if ($keyword eq "RFC3779" && $no_rfc3779) { return 0; }
1212                         if ($keyword eq "PSK" && $no_psk) { return 0; }
1213                         if ($keyword eq "CMS" && $no_cms) { return 0; }
1214                         if ($keyword eq "EC_NISTP_64_GCC_128" && $no_nistp_gcc)
1215                                         { return 0; }
1216                         if ($keyword eq "EC2M" && $no_ec2m) { return 0; }
1217                         if ($keyword eq "NEXTPROTONEG" && $no_nextprotoneg) { return 0; }
1218                         if ($keyword eq "SSL3_METHOD" && $no_ssl3_method) { return 0; }
1219                         if ($keyword eq "SSL_TRACE" && $no_ssl_trace) { return 0; }
1220                         if ($keyword eq "CAPIENG" && $no_capieng) { return 0; }
1221                         if ($keyword eq "JPAKE" && $no_jpake) { return 0; }
1222                         if ($keyword eq "SRP" && $no_srp) { return 0; }
1223                         if ($keyword eq "SCTP" && $no_sctp) { return 0; }
1224                         if ($keyword eq "SRTP" && $no_srtp) { return 0; }
1225                         if ($keyword eq "UNIT_TEST" && $no_unit_test) { return 0; }
1226                         if ($keyword eq "DEPRECATED" && $no_deprecated) { return 0; }
1227                         if ($keyword eq "OCB" && $no_ocb) { return 0; }
1228
1229                         # Nothing recognise as true
1230                         return 1;
1231                 }
1232         }
1233
1234         foreach $k (@keywords) {
1235                 if ($k =~ /^!(.*)$/) {
1236                         $falsesum += &recognise($1,$platforms);
1237                 } else {
1238                         $truesum *= &recognise($k,$platforms);
1239                 }
1240         }
1241         print STDERR "DEBUG: [",$#keywords,",",$#keywords < 0,"] is_valid($keywords_txt) => (\!$falsesum) && $truesum = ",(!$falsesum) && $truesum,"\n" if $debug;
1242         return (!$falsesum) && $truesum;
1243 }
1244
1245 sub print_test_file
1246 {
1247         (*OUT,my $name,*nums,my $testall,my @symbols)=@_;
1248         my $n = 1; my @e; my @r;
1249         my $sym; my $prev = ""; my $prefSSLeay;
1250
1251         (@e)=grep(/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1252         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:.*/ && !/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1253         @symbols=((sort @e),(sort @r));
1254
1255         foreach $sym (@symbols) {
1256                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1257                 my $v = 0;
1258                 $v = 1 if $i=~ /^.*?:.*?:VARIABLE/;
1259                 my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1260                 my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1261                 if (!defined($nums{$s})) {
1262                         print STDERR "Warning: $s does not have a number assigned\n"
1263                             if(!$do_update);
1264                 } elsif (is_valid($p,1) && is_valid($a,0)) {
1265                         my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1266                         if ($prev eq $s2) {
1267                                 print OUT "\t/* The following has already appeared previously */\n";
1268                                 print STDERR "Warning: Symbol '",$s2,"' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1269                         }
1270                         $prev = $s2;    # To warn about duplicates...
1271
1272                         ($nn,$ni)=($nums{$s2} =~ /^(.*?)\\(.*)$/);
1273                         if ($v) {
1274                                 print OUT "\textern int $s2; /* type unknown */ /* $nn $ni */\n";
1275                         } else {
1276                                 print OUT "\textern int $s2(); /* type unknown */ /* $nn $ni */\n";
1277                         }
1278                 }
1279         }
1280 }
1281
1282 sub get_version {
1283    local *MF;
1284    my $v = '?';
1285    open MF, 'Makefile' or return $v;
1286    while (<MF>) {
1287      $v = $1, last if /^VERSION=(.*?)\s*$/;
1288    }
1289    close MF;
1290    return $v;
1291 }
1292
1293 sub print_def_file
1294 {
1295         (*OUT,my $name,*nums,my @symbols)=@_;
1296         my $n = 1; my @e; my @r; my @v; my $prev="";
1297         my $liboptions="";
1298         my $libname = $name;
1299         my $http_vendor = 'www.openssl.org/';
1300         my $version = get_version();
1301         my $what = "OpenSSL: implementation of Secure Socket Layer";
1302         my $description = "$what $version, $name - http://$http_vendor";
1303
1304         if ($W32)
1305                 { $libname.="32"; }
1306         elsif ($OS2)
1307                 { # DLL names should not clash on the whole system.
1308                   # However, they should not have any particular relationship
1309                   # to the name of the static library.  Chose descriptive names
1310                   # (must be at most 8 chars).
1311                   my %translate = (ssl => 'open_ssl', crypto => 'cryptssl');
1312                   $libname = $translate{$name} || $name;
1313                   $liboptions = <<EOO;
1314 INITINSTANCE
1315 DATA MULTIPLE NONSHARED
1316 EOO
1317                   # Vendor field can't contain colon, drat; so we omit http://
1318                   $description = "\@#$http_vendor:$version#\@$what; DLL for library $name.  Build for EMX -Zmtd";
1319                 }
1320
1321         print OUT <<"EOF";
1322 ;
1323 ; Definition file for the DLL version of the $name library from OpenSSL
1324 ;
1325
1326 LIBRARY         $libname        $liboptions
1327
1328 EOF
1329
1330         print "EXPORTS\n";
1331
1332         (@e)=grep(/^SSLeay(\{[0-9]+\})?\\.*?:.*?:FUNCTION/,@symbols);
1333         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:FUNCTION/ && !/^SSLeay(\{[0-9]+\})?\\.*?:.*?:FUNCTION/,@symbols);
1334         (@v)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:VARIABLE/,@symbols);
1335         @symbols=((sort @e),(sort @r), (sort @v));
1336
1337
1338         foreach $sym (@symbols) {
1339                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1340                 my $v = 0;
1341                 $v = 1 if $i =~ /^.*?:.*?:VARIABLE/;
1342                 if (!defined($nums{$s})) {
1343                         printf STDERR "Warning: $s does not have a number assigned\n"
1344                             if(!$do_update);
1345                 } else {
1346                         (my $n, my $dummy) = split /\\/, $nums{$s};
1347                         my %pf = ();
1348                         my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1349                         my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1350                         if (is_valid($p,1) && is_valid($a,0)) {
1351                                 my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1352                                 if ($prev eq $s2) {
1353                                         print STDERR "Warning: Symbol '",$s2,"' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1354                                 }
1355                                 $prev = $s2;    # To warn about duplicates...
1356                                 if($v && !$OS2) {
1357                                         printf OUT "    %s%-39s @%-8d DATA\n",($W32)?"":"_",$s2,$n;
1358                                 } else {
1359                                         printf OUT "    %s%-39s @%d\n",($W32||$OS2)?"":"_",$s2,$n;
1360                                 }
1361                         }
1362                 }
1363         }
1364         printf OUT "\n";
1365 }
1366
1367 sub load_numbers
1368 {
1369         my($name)=@_;
1370         my(@a,%ret);
1371
1372         $max_num = 0;
1373         $num_noinfo = 0;
1374         $prev = "";
1375         $prev_cnt = 0;
1376
1377         open(IN,"<$name") || die "unable to open $name:$!\n";
1378         while (<IN>) {
1379                 chop;
1380                 s/#.*$//;
1381                 next if /^\s*$/;
1382                 @a=split;
1383                 if (defined $ret{$a[0]}) {
1384                         # This is actually perfectly OK
1385                         #print STDERR "Warning: Symbol '",$a[0],"' redefined. old=",$ret{$a[0]},", new=",$a[1],"\n";
1386                 }
1387                 if ($max_num > $a[1]) {
1388                         print STDERR "Warning: Number decreased from ",$max_num," to ",$a[1],"\n";
1389                 }
1390                 elsif ($max_num == $a[1]) {
1391                         # This is actually perfectly OK
1392                         #print STDERR "Warning: Symbol ",$a[0]," has same number as previous ",$prev,": ",$a[1],"\n";
1393                         if ($a[0] eq $prev) {
1394                                 $prev_cnt++;
1395                                 $a[0] .= "{$prev_cnt}";
1396                         }
1397                 }
1398                 else {
1399                         $prev_cnt = 0;
1400                 }
1401                 if ($#a < 2) {
1402                         # Existence will be proven later, in do_defs
1403                         $ret{$a[0]}=$a[1];
1404                         $num_noinfo++;
1405                 } else {
1406                         $ret{$a[0]}=$a[1]."\\".$a[2]; # \\ is a special marker
1407                 }
1408                 $max_num = $a[1] if $a[1] > $max_num;
1409                 $prev=$a[0];
1410         }
1411         if ($num_noinfo) {
1412                 print STDERR "Warning: $num_noinfo symbols were without info.";
1413                 if ($do_rewrite) {
1414                         printf STDERR "  The rewrite will fix this.\n";
1415                 } else {
1416                         printf STDERR "  You should do a rewrite to fix this.\n";
1417                 }
1418         }
1419         close(IN);
1420         return(%ret);
1421 }
1422
1423 sub parse_number
1424 {
1425         (my $str, my $what) = @_;
1426         (my $n, my $i) = split(/\\/,$str);
1427         if ($what eq "n") {
1428                 return $n;
1429         } else {
1430                 return $i;
1431         }
1432 }
1433
1434 sub rewrite_numbers
1435 {
1436         (*OUT,$name,*nums,@symbols)=@_;
1437         my $thing;
1438
1439         print STDERR "Rewriting $name\n";
1440
1441         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1442         my $r; my %r; my %rsyms;
1443         foreach $r (@r) {
1444                 (my $s, my $i) = split /\\/, $r;
1445                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1446                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1447                 $r{$a} = $s."\\".$i;
1448                 $rsyms{$s} = 1;
1449         }
1450
1451         my %syms = ();
1452         foreach $_ (@symbols) {
1453                 (my $n, my $i) = split /\\/;
1454                 $syms{$n} = 1;
1455         }
1456
1457         my @s=sort {
1458             &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n")
1459             || $a cmp $b
1460         } keys %nums;
1461         foreach $sym (@s) {
1462                 (my $n, my $i) = split /\\/, $nums{$sym};
1463                 next if defined($i) && $i =~ /^.*?:.*?:\w+\(\w+\)/;
1464                 next if defined($rsyms{$sym});
1465                 print STDERR "DEBUG: rewrite_numbers for sym = ",$sym,": i = ",$i,", n = ",$n,", rsym{sym} = ",$rsyms{$sym},"syms{sym} = ",$syms{$sym},"\n" if $debug;
1466                 $i="NOEXIST::FUNCTION:"
1467                         if !defined($i) || $i eq "" || !defined($syms{$sym});
1468                 my $s2 = $sym;
1469                 $s2 =~ s/\{[0-9]+\}$//;
1470                 printf OUT "%s%-39s %d\t%s\n","",$s2,$n,$i;
1471                 if (exists $r{$sym}) {
1472                         (my $s, $i) = split /\\/,$r{$sym};
1473                         my $s2 = $s;
1474                         $s2 =~ s/\{[0-9]+\}$//;
1475                         printf OUT "%s%-39s %d\t%s\n","",$s2,$n,$i;
1476                 }
1477         }
1478 }
1479
1480 sub update_numbers
1481 {
1482         (*OUT,$name,*nums,my $start_num, my @symbols)=@_;
1483         my $new_syms = 0;
1484
1485         print STDERR "Updating $name numbers\n";
1486
1487         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1488         my $r; my %r; my %rsyms;
1489         foreach $r (@r) {
1490                 (my $s, my $i) = split /\\/, $r;
1491                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1492                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1493                 $r{$a} = $s."\\".$i;
1494                 $rsyms{$s} = 1;
1495         }
1496
1497         foreach $sym (@symbols) {
1498                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1499                 next if $i =~ /^.*?:.*?:\w+\(\w+\)/;
1500                 next if defined($rsyms{$sym});
1501                 die "ERROR: Symbol $sym had no info attached to it."
1502                     if $i eq "";
1503                 next if $i =~ /OPENSSL_FIPSCAPABLE/;
1504                 if (!exists $nums{$s}) {
1505                         $new_syms++;
1506                         my $s2 = $s;
1507                         $s2 =~ s/\{[0-9]+\}$//;
1508                         printf OUT "%s%-39s %d\t%s\n","",$s2, ++$start_num,$i;
1509                         if (exists $r{$s}) {
1510                                 ($s, $i) = split /\\/,$r{$s};
1511                                 $s =~ s/\{[0-9]+\}$//;
1512                                 printf OUT "%s%-39s %d\t%s\n","",$s, $start_num,$i;
1513                         }
1514                 }
1515         }
1516         if($new_syms) {
1517                 print STDERR "$new_syms New symbols added\n";
1518         } else {
1519                 print STDERR "No New symbols Added\n";
1520         }
1521 }
1522
1523 sub check_existing
1524 {
1525         (*nums, my @symbols)=@_;
1526         my %existing; my @remaining;
1527         @remaining=();
1528         foreach $sym (@symbols) {
1529                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1530                 $existing{$s}=1;
1531         }
1532         foreach $sym (keys %nums) {
1533                 if (!exists $existing{$sym}) {
1534                         push @remaining, $sym;
1535                 }
1536         }
1537         if(@remaining) {
1538                 print STDERR "The following symbols do not seem to exist:\n";
1539                 foreach $sym (@remaining) {
1540                         print STDERR "\t",$sym,"\n";
1541                 }
1542         }
1543 }
1544
1545 sub count_parens
1546 {
1547         my $line = shift(@_);
1548
1549         my $open = $line =~ tr/\(//;
1550         my $close = $line =~ tr/\)//;
1551
1552         return $open - $close;
1553 }
1554