ed10da2b315ed237fc4d249befced293ae069ade
[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", "RMD160",
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                          # TLS
101                          "TLSEXT", "PSK", "SRP", "HEARTBEATS",
102                          # CMS
103                          "CMS",
104                          # CryptoAPI Engine
105                          "CAPIENG",
106                          # SSL v3 method
107                          "SSL3_METHOD",
108                          # JPAKE
109                          "JPAKE",
110                          # NEXTPROTONEG
111                          "NEXTPROTONEG",
112                          # Deprecated functions
113                          "DEPRECATED",
114                          # SCTP
115                          "SCTP",
116                          # SRTP
117                          "SRTP",
118                          # SSL TRACE
119                          "SSL_TRACE",
120                          # Unit testing
121                          "UNIT_TEST",
122                          # OCB mode
123                          "OCB");
124
125 my $options="";
126 open(IN,"<Makefile") || die "unable to open Makefile!\n";
127 while(<IN>) {
128     $options=$1 if (/^OPTIONS=(.*)$/);
129 }
130 close(IN);
131
132 # The following ciphers may be excluded (by Configure). This means functions
133 # defined with ifndef(NO_XXX) are not included in the .def file, and everything
134 # in directory xxx is ignored.
135 my $no_rc2; my $no_rc4; my $no_rc5; my $no_idea; my $no_des; my $no_bf;
136 my $no_cast; my $no_whirlpool; my $no_camellia; my $no_seed;
137 my $no_md2; my $no_md4; my $no_md5; my $no_sha; my $no_ripemd; my $no_mdc2;
138 my $no_rsa; my $no_dsa; my $no_dh; my $no_hmac=0; my $no_aes; my $no_krb5;
139 my $no_ec; my $no_ecdsa; my $no_ecdh; my $no_engine; my $no_hw;
140 my $no_fp_api; my $no_static_engine=1; my $no_gmp; my $no_deprecated;
141 my $no_psk; my $no_tlsext; my $no_cms; my $no_capieng;
142 my $no_jpake; my $no_srp; my $no_ec2m; my $no_nistp_gcc; 
143 my $no_nextprotoneg; my $no_sctp; my $no_srtp; my $no_ssl_trace;
144 my $no_unit_test; my $no_ssl3_method; my $no_ocb;
145
146 my $fips;
147
148 my $zlib;
149
150
151 foreach (@ARGV, split(/ /, $options))
152         {
153         $debug=1 if $_ eq "debug";
154         $W32=1 if $_ eq "32";
155         die "win16 not supported" if $_ eq "16";
156         if($_ eq "NT") {
157                 $W32 = 1;
158                 $NT = 1;
159         }
160         if ($_ eq "VMS-VAX") {
161                 $VMS=1;
162                 $VMSVAX=1;
163         }
164         if ($_ eq "VMS-NonVAX") {
165                 $VMS=1;
166                 $VMSNonVAX=1;
167         }
168         $VMS=1 if $_ eq "VMS";
169         $OS2=1 if $_ eq "OS2";
170         $fips=1 if /^fips/;
171         if ($_ eq "zlib" || $_ eq "enable-zlib" || $_ eq "zlib-dynamic"
172                          || $_ eq "enable-zlib-dynamic") {
173                 $zlib = 1;
174         }
175
176         $do_ssl=1 if $_ eq "ssleay";
177         if ($_ eq "ssl") {
178                 $do_ssl=1; 
179                 $libname=$_
180         }
181         $do_crypto=1 if $_ eq "libeay";
182         if ($_ eq "crypto") {
183                 $do_crypto=1;
184                 $libname=$_;
185         }
186         $no_static_engine=1 if $_ eq "no-static-engine";
187         $no_static_engine=0 if $_ eq "enable-static-engine";
188         $do_update=1 if $_ eq "update";
189         $do_rewrite=1 if $_ eq "rewrite";
190         $do_ctest=1 if $_ eq "ctest";
191         $do_ctestall=1 if $_ eq "ctestall";
192         $do_checkexist=1 if $_ eq "exist";
193         #$safe_stack_def=1 if $_ eq "-DDEBUG_SAFESTACK";
194
195         if    (/^no-rc2$/)      { $no_rc2=1; }
196         elsif (/^no-rc4$/)      { $no_rc4=1; }
197         elsif (/^no-rc5$/)      { $no_rc5=1; }
198         elsif (/^no-idea$/)     { $no_idea=1; }
199         elsif (/^no-des$/)      { $no_des=1; $no_mdc2=1; }
200         elsif (/^no-bf$/)       { $no_bf=1; }
201         elsif (/^no-cast$/)     { $no_cast=1; }
202         elsif (/^no-whirlpool$/)     { $no_whirlpool=1; }
203         elsif (/^no-md2$/)      { $no_md2=1; }
204         elsif (/^no-md4$/)      { $no_md4=1; }
205         elsif (/^no-md5$/)      { $no_md5=1; }
206         elsif (/^no-sha$/)      { $no_sha=1; }
207         elsif (/^no-ripemd$/)   { $no_ripemd=1; }
208         elsif (/^no-mdc2$/)     { $no_mdc2=1; }
209         elsif (/^no-rsa$/)      { $no_rsa=1; }
210         elsif (/^no-dsa$/)      { $no_dsa=1; }
211         elsif (/^no-dh$/)       { $no_dh=1; }
212         elsif (/^no-ec$/)       { $no_ec=1; }
213         elsif (/^no-ecdsa$/)    { $no_ecdsa=1; }
214         elsif (/^no-ecdh$/)     { $no_ecdh=1; }
215         elsif (/^no-hmac$/)     { $no_hmac=1; }
216         elsif (/^no-aes$/)      { $no_aes=1; }
217         elsif (/^no-camellia$/) { $no_camellia=1; }
218         elsif (/^no-seed$/)     { $no_seed=1; }
219         elsif (/^no-evp$/)      { $no_evp=1; }
220         elsif (/^no-lhash$/)    { $no_lhash=1; }
221         elsif (/^no-stack$/)    { $no_stack=1; }
222         elsif (/^no-err$/)      { $no_err=1; }
223         elsif (/^no-buffer$/)   { $no_buffer=1; }
224         elsif (/^no-bio$/)      { $no_bio=1; }
225         #elsif (/^no-locking$/) { $no_locking=1; }
226         elsif (/^no-comp$/)     { $no_comp=1; }
227         elsif (/^no-dso$/)      { $no_dso=1; }
228         elsif (/^no-krb5$/)     { $no_krb5=1; }
229         elsif (/^no-engine$/)   { $no_engine=1; }
230         elsif (/^no-hw$/)       { $no_hw=1; }
231         elsif (/^no-gmp$/)      { $no_gmp=1; }
232         elsif (/^no-tlsext$/)   { $no_tlsext=1; }
233         elsif (/^no-cms$/)      { $no_cms=1; }
234         elsif (/^no-ec2m$/)     { $no_ec2m=1; }
235         elsif (/^no-ec-nistp224-64-gcc-128$/)   { $no_nistp_gcc=1; }
236         elsif (/^no-nextprotoneg$/)     { $no_nextprotoneg=1; }
237         elsif (/^no-ssl3-method$/) { $no_ssl3_method=1; }
238         elsif (/^no-ssl-trace$/) { $no_ssl_trace=1; }
239         elsif (/^no-capieng$/)  { $no_capieng=1; }
240         elsif (/^no-jpake$/)    { $no_jpake=1; }
241         elsif (/^no-srp$/)      { $no_srp=1; }
242         elsif (/^no-sctp$/)     { $no_sctp=1; }
243         elsif (/^no-srtp$/)     { $no_srtp=1; }
244         elsif (/^no-unit-test$/){ $no_unit_test=1; }
245         elsif (/^no-deprecated$/) { $no_deprecated=1; }
246         elsif (/^no-ocb/){ $no_ocb=1; }
247         }
248
249
250 if (!$libname) { 
251         if ($do_ssl) {
252                 $libname="SSLEAY";
253         }
254         if ($do_crypto) {
255                 $libname="LIBEAY";
256         }
257 }
258
259 # If no platform is given, assume WIN32
260 if ($W32 + $VMS + $OS2 == 0) {
261         $W32 = 1;
262 }
263
264 if (!$do_ssl && !$do_crypto)
265         {
266         print STDERR "usage: $0 ( ssl | crypto ) [ 16 | 32 | NT | OS2 ]\n";
267         exit(1);
268         }
269
270 %ssl_list=&load_numbers($ssl_num);
271 $max_ssl = $max_num;
272 %crypto_list=&load_numbers($crypto_num);
273 $max_crypto = $max_num;
274
275 my $ssl="ssl/ssl.h";
276 $ssl.=" ssl/kssl.h";
277 $ssl.=" ssl/tls1.h";
278 $ssl.=" ssl/srtp.h";
279
280 my $crypto ="crypto/crypto.h";
281 $crypto.=" crypto/cryptlib.h";
282 $crypto.=" crypto/o_dir.h";
283 $crypto.=" crypto/o_str.h";
284 $crypto.=" crypto/des/des.h" ; # unless $no_des;
285 $crypto.=" crypto/idea/idea.h" ; # unless $no_idea;
286 $crypto.=" crypto/rc4/rc4.h" ; # unless $no_rc4;
287 $crypto.=" crypto/rc5/rc5.h" ; # unless $no_rc5;
288 $crypto.=" crypto/rc2/rc2.h" ; # unless $no_rc2;
289 $crypto.=" crypto/bf/blowfish.h" ; # unless $no_bf;
290 $crypto.=" crypto/cast/cast.h" ; # unless $no_cast;
291 $crypto.=" crypto/whrlpool/whrlpool.h" ;
292 $crypto.=" crypto/md2/md2.h" ; # unless $no_md2;
293 $crypto.=" crypto/md4/md4.h" ; # unless $no_md4;
294 $crypto.=" crypto/md5/md5.h" ; # unless $no_md5;
295 $crypto.=" crypto/mdc2/mdc2.h" ; # unless $no_mdc2;
296 $crypto.=" crypto/sha/sha.h" ; # unless $no_sha;
297 $crypto.=" crypto/ripemd/ripemd.h" ; # unless $no_ripemd;
298 $crypto.=" crypto/aes/aes.h" ; # unless $no_aes;
299 $crypto.=" crypto/camellia/camellia.h" ; # unless $no_camellia;
300 $crypto.=" crypto/seed/seed.h"; # unless $no_seed;
301
302 $crypto.=" crypto/bn/bn.h";
303 $crypto.=" crypto/rsa/rsa.h" ; # unless $no_rsa;
304 $crypto.=" crypto/dsa/dsa.h" ; # unless $no_dsa;
305 $crypto.=" crypto/dh/dh.h" ; # unless $no_dh;
306 $crypto.=" crypto/ec/ec.h" ; # unless $no_ec;
307 $crypto.=" crypto/ecdsa/ecdsa.h" ; # unless $no_ecdsa;
308 $crypto.=" crypto/ecdh/ecdh.h" ; # unless $no_ecdh;
309 $crypto.=" crypto/hmac/hmac.h" ; # unless $no_hmac;
310 $crypto.=" crypto/cmac/cmac.h" ;
311
312 $crypto.=" crypto/engine/engine.h"; # unless $no_engine;
313 $crypto.=" crypto/stack/stack.h" ; # unless $no_stack;
314 $crypto.=" crypto/buffer/buffer.h" ; # unless $no_buffer;
315 $crypto.=" crypto/bio/bio.h" ; # unless $no_bio;
316 $crypto.=" crypto/dso/dso.h" ; # unless $no_dso;
317 $crypto.=" crypto/lhash/lhash.h" ; # unless $no_lhash;
318 $crypto.=" crypto/conf/conf.h";
319 $crypto.=" crypto/txt_db/txt_db.h";
320
321 $crypto.=" crypto/evp/evp.h" ; # unless $no_evp;
322 $crypto.=" crypto/objects/objects.h";
323 $crypto.=" crypto/pem/pem.h";
324 #$crypto.=" crypto/meth/meth.h";
325 $crypto.=" crypto/asn1/asn1.h";
326 $crypto.=" crypto/asn1/asn1t.h";
327 $crypto.=" crypto/asn1/asn1_mac.h";
328 $crypto.=" crypto/err/err.h" ; # unless $no_err;
329 $crypto.=" crypto/pkcs7/pkcs7.h";
330 $crypto.=" crypto/pkcs12/pkcs12.h";
331 $crypto.=" crypto/x509/x509.h";
332 $crypto.=" crypto/x509/x509_vfy.h";
333 $crypto.=" crypto/x509v3/x509v3.h";
334 $crypto.=" crypto/ts/ts.h";
335 $crypto.=" crypto/rand/rand.h";
336 $crypto.=" crypto/comp/comp.h" ; # unless $no_comp;
337 $crypto.=" crypto/ocsp/ocsp.h";
338 $crypto.=" crypto/ui/ui.h crypto/ui/ui_compat.h";
339 $crypto.=" crypto/krb5/krb5_asn.h";
340 #$crypto.=" crypto/store/store.h";
341 $crypto.=" crypto/pqueue/pqueue.h";
342 $crypto.=" crypto/cms/cms.h";
343 $crypto.=" crypto/jpake/jpake.h";
344 $crypto.=" crypto/srp/srp.h";
345 $crypto.=" crypto/modes/modes.h";
346
347 my $symhacks="crypto/symhacks.h";
348
349 my @ssl_symbols = &do_defs("SSLEAY", $ssl, $symhacks);
350 my @crypto_symbols = &do_defs("LIBEAY", $crypto, $symhacks);
351
352 if ($do_update) {
353
354 if ($do_ssl == 1) {
355
356         &maybe_add_info("SSLEAY",*ssl_list,@ssl_symbols);
357         if ($do_rewrite == 1) {
358                 open(OUT, ">$ssl_num");
359                 &rewrite_numbers(*OUT,"SSLEAY",*ssl_list,@ssl_symbols);
360         } else {
361                 open(OUT, ">>$ssl_num");
362         }
363         &update_numbers(*OUT,"SSLEAY",*ssl_list,$max_ssl,@ssl_symbols);
364         close OUT;
365 }
366
367 if($do_crypto == 1) {
368
369         &maybe_add_info("LIBEAY",*crypto_list,@crypto_symbols);
370         if ($do_rewrite == 1) {
371                 open(OUT, ">$crypto_num");
372                 &rewrite_numbers(*OUT,"LIBEAY",*crypto_list,@crypto_symbols);
373         } else {
374                 open(OUT, ">>$crypto_num");
375         }
376         &update_numbers(*OUT,"LIBEAY",*crypto_list,$max_crypto,@crypto_symbols);
377         close OUT;
378
379
380 } elsif ($do_checkexist) {
381         &check_existing(*ssl_list, @ssl_symbols)
382                 if $do_ssl == 1;
383         &check_existing(*crypto_list, @crypto_symbols)
384                 if $do_crypto == 1;
385 } elsif ($do_ctest || $do_ctestall) {
386
387         print <<"EOF";
388
389 /* Test file to check all DEF file symbols are present by trying
390  * to link to all of them. This is *not* intended to be run!
391  */
392
393 int main()
394 {
395 EOF
396         &print_test_file(*STDOUT,"SSLEAY",*ssl_list,$do_ctestall,@ssl_symbols)
397                 if $do_ssl == 1;
398
399         &print_test_file(*STDOUT,"LIBEAY",*crypto_list,$do_ctestall,@crypto_symbols)
400                 if $do_crypto == 1;
401
402         print "}\n";
403
404 } else {
405
406         &print_def_file(*STDOUT,$libname,*ssl_list,@ssl_symbols)
407                 if $do_ssl == 1;
408
409         &print_def_file(*STDOUT,$libname,*crypto_list,@crypto_symbols)
410                 if $do_crypto == 1;
411
412 }
413
414
415 sub do_defs
416 {
417         my($name,$files,$symhacksfile)=@_;
418         my $file;
419         my @ret;
420         my %syms;
421         my %platform;           # For anything undefined, we assume ""
422         my %kind;               # For anything undefined, we assume "FUNCTION"
423         my %algorithm;          # For anything undefined, we assume ""
424         my %variant;
425         my %variant_cnt;        # To be able to allocate "name{n}" if "name"
426                                 # is the same name as the original.
427         my $cpp;
428         my %unknown_algorithms = ();
429         my $parens = 0;
430
431         foreach $file (split(/\s+/,$symhacksfile." ".$files))
432                 {
433                 print STDERR "DEBUG: starting on $file:\n" if $debug;
434                 open(IN,"<$file") || die "unable to open $file:$!\n";
435                 my $line = "", my $def= "";
436                 my %tag = (
437                         (map { $_ => 0 } @known_platforms),
438                         (map { "OPENSSL_SYS_".$_ => 0 } @known_ossl_platforms),
439                         (map { "OPENSSL_NO_".$_ => 0 } @known_algorithms),
440                         (map { "OPENSSL_USE_".$_ => 0 } @known_algorithms),
441                         NOPROTO         => 0,
442                         PERL5           => 0,
443                         _WINDLL         => 0,
444                         CONST_STRICT    => 0,
445                         TRUE            => 1,
446                 );
447                 my $symhacking = $file eq $symhacksfile;
448                 my @current_platforms = ();
449                 my @current_algorithms = ();
450
451                 # params: symbol, alias, platforms, kind
452                 # The reason to put this subroutine in a variable is that
453                 # it will otherwise create it's own, unshared, version of
454                 # %tag and %variant...
455                 my $make_variant = sub
456                 {
457                         my ($s, $a, $p, $k) = @_;
458                         my ($a1, $a2);
459
460                         print STDERR "DEBUG: make_variant: Entered with ",$s,", ",$a,", ",(defined($p)?$p:""),", ",(defined($k)?$k:""),"\n" if $debug;
461                         if (defined($p))
462                         {
463                                 $a1 = join(",",$p,
464                                            grep(!/^$/,
465                                                 map { $tag{$_} == 1 ? $_ : "" }
466                                                 @known_platforms));
467                         }
468                         else
469                         {
470                                 $a1 = join(",",
471                                            grep(!/^$/,
472                                                 map { $tag{$_} == 1 ? $_ : "" }
473                                                 @known_platforms));
474                         }
475                         $a2 = join(",",
476                                    grep(!/^$/,
477                                         map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ : "" }
478                                         @known_ossl_platforms));
479                         print STDERR "DEBUG: make_variant: a1 = $a1; a2 = $a2\n" if $debug;
480                         if ($a1 eq "") { $a1 = $a2; }
481                         elsif ($a1 ne "" && $a2 ne "") { $a1 .= ",".$a2; }
482                         if ($a eq $s)
483                         {
484                                 if (!defined($variant_cnt{$s}))
485                                 {
486                                         $variant_cnt{$s} = 0;
487                                 }
488                                 $variant_cnt{$s}++;
489                                 $a .= "{$variant_cnt{$s}}";
490                         }
491                         my $toadd = $a.":".$a1.(defined($k)?":".$k:"");
492                         my $togrep = $s.'(\{[0-9]+\})?:'.$a1.(defined($k)?":".$k:"");
493                         if (!grep(/^$togrep$/,
494                                   split(/;/, defined($variant{$s})?$variant{$s}:""))) {
495                                 if (defined($variant{$s})) { $variant{$s} .= ";"; }
496                                 $variant{$s} .= $toadd;
497                         }
498                         print STDERR "DEBUG: make_variant: Exit with variant of ",$s," = ",$variant{$s},"\n" if $debug;
499                 };
500
501                 print STDERR "DEBUG: parsing ----------\n" if $debug;
502                 while(<IN>) {
503                         if($parens > 0) {
504                                 #Inside a DECLARE_DEPRECATED
505                                 $parens += count_parens($_);
506                                 next;
507                         }
508                         if (/\/\* Error codes for the \w+ functions\. \*\//)
509                                 {
510                                 undef @tag;
511                                 last;
512                                 }
513                         if ($line ne '') {
514                                 $_ = $line . $_;
515                                 $line = '';
516                         }
517
518                         if (/\\$/) {
519                                 chomp; # remove eol
520                                 chop; # remove ending backslash
521                                 $line = $_;
522                                 next;
523                         }
524
525                         if(/\/\*/) {
526                                 if (not /\*\//) {       # multiline comment...
527                                         $line = $_;     # ... just accumulate
528                                         next;
529                                 } else {
530                                         s/\/\*.*?\*\///gs;# wipe it
531                                 }
532                         }
533
534                         if ($cpp) {
535                                 $cpp++ if /^#\s*if/;
536                                 $cpp-- if /^#\s*endif/;
537                                 next;
538                         }
539                         $cpp = 1 if /^#.*ifdef.*cplusplus/;
540
541                         s/{[^{}]*}//gs;                      # ignore {} blocks
542                         print STDERR "DEBUG: \$def=\"$def\"\n" if $debug && $def ne "";
543                         print STDERR "DEBUG: \$_=\"$_\"\n" if $debug;
544                         if (/^\#\s*ifndef\s+(.*)/) {
545                                 push(@tag,"-");
546                                 push(@tag,$1);
547                                 $tag{$1}=-1;
548                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
549                         } elsif (/^\#\s*if\s+!defined\(([^\)]+)\)/) {
550                                 push(@tag,"-");
551                                 if (/^\#\s*if\s+(!defined\(([^\)]+)\)(\s+\&\&\s+!defined\(([^\)]+)\))*)$/) {
552                                         my $tmp_1 = $1;
553                                         my $tmp_;
554                                         foreach $tmp_ (split '\&\&',$tmp_1) {
555                                                 $tmp_ =~ /!defined\(([^\)]+)\)/;
556                                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
557                                                 push(@tag,$1);
558                                                 $tag{$1}=-1;
559                                         }
560                                 } else {
561                                         print STDERR "Warning: $file: complicated expression: $_" if $debug; # because it is O...
562                                         print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
563                                         push(@tag,$1);
564                                         $tag{$1}=-1;
565                                 }
566                         } elsif (/^\#\s*ifdef\s+(\S*)/) {
567                                 push(@tag,"-");
568                                 push(@tag,$1);
569                                 $tag{$1}=1;
570                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
571                         } elsif (/^\#\s*if\s+defined\(([^\)]+)\)/) {
572                                 push(@tag,"-");
573                                 if (/^\#\s*if\s+(defined\(([^\)]+)\)(\s+\|\|\s+defined\(([^\)]+)\))*)$/) {
574                                         my $tmp_1 = $1;
575                                         my $tmp_;
576                                         foreach $tmp_ (split '\|\|',$tmp_1) {
577                                                 $tmp_ =~ /defined\(([^\)]+)\)/;
578                                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
579                                                 push(@tag,$1);
580                                                 $tag{$1}=1;
581                                         }
582                                 } else {
583                                         print STDERR "Warning: $file: complicated expression: $_\n" if $debug; # because it is O...
584                                         print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
585                                         push(@tag,$1);
586                                         $tag{$1}=1;
587                                 }
588                         } elsif (/^\#\s*error\s+(\w+) is disabled\./) {
589                                 my $tag_i = $#tag;
590                                 while($tag[$tag_i] ne "-") {
591                                         if ($tag[$tag_i] eq "OPENSSL_NO_".$1) {
592                                                 $tag{$tag[$tag_i]}=2;
593                                                 print STDERR "DEBUG: $file: chaged tag $1 = 2\n" if $debug;
594                                         }
595                                         $tag_i--;
596                                 }
597                         } elsif (/^\#\s*endif/) {
598                                 my $tag_i = $#tag;
599                                 while($tag_i > 0 && $tag[$tag_i] ne "-") {
600                                         my $t=$tag[$tag_i];
601                                         print STDERR "DEBUG: \$t=\"$t\"\n" if $debug;
602                                         if ($tag{$t}==2) {
603                                                 $tag{$t}=-1;
604                                         } else {
605                                                 $tag{$t}=0;
606                                         }
607                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
608                                         pop(@tag);
609                                         if ($t =~ /^OPENSSL_NO_([A-Z0-9_]+)$/) {
610                                                 $t=$1;
611                                         } elsif($t =~ /^OPENSSL_USE_([A-Z0-9_]+)$/) {
612                                                 $t=$1;
613                                         } else {
614                                                 $t="";
615                                         }
616                                         if ($t ne ""
617                                             && !grep(/^$t$/, @known_algorithms)) {
618                                                 $unknown_algorithms{$t} = 1;
619                                                 #print STDERR "DEBUG: Added as unknown algorithm: $t\n" if $debug;
620                                         }
621                                         $tag_i--;
622                                 }
623                                 pop(@tag);
624                         } elsif (/^\#\s*else/) {
625                                 my $tag_i = $#tag;
626                                 while($tag[$tag_i] ne "-") {
627                                         my $t=$tag[$tag_i];
628                                         $tag{$t}= -$tag{$t};
629                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
630                                         $tag_i--;
631                                 }
632                         } elsif (/^\#\s*if\s+1/) {
633                                 push(@tag,"-");
634                                 # Dummy tag
635                                 push(@tag,"TRUE");
636                                 $tag{"TRUE"}=1;
637                                 print STDERR "DEBUG: $file: found 1\n" if $debug;
638                         } elsif (/^\#\s*if\s+0/) {
639                                 push(@tag,"-");
640                                 # Dummy tag
641                                 push(@tag,"TRUE");
642                                 $tag{"TRUE"}=-1;
643                                 print STDERR "DEBUG: $file: found 0\n" if $debug;
644                         } elsif (/^\#\s*define\s+(\w+)\s+(\w+)/
645                                  && $symhacking && $tag{'TRUE'} != -1) {
646                                 # This is for aliasing.  When we find an alias,
647                                 # we have to invert
648                                 &$make_variant($1,$2);
649                                 print STDERR "DEBUG: $file: defined $1 = $2\n" if $debug;
650                         }
651                         if (/^\#/) {
652                                 @current_platforms =
653                                     grep(!/^$/,
654                                          map { $tag{$_} == 1 ? $_ :
655                                                    $tag{$_} == -1 ? "!".$_  : "" }
656                                          @known_platforms);
657                                 push @current_platforms
658                                     , grep(!/^$/,
659                                            map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ :
660                                                      $tag{"OPENSSL_SYS_".$_} == -1 ? "!".$_  : "" }
661                                            @known_ossl_platforms);
662                                 @current_algorithms = ();
663                                 @current_algorithms =
664                                     grep(!/^$/,
665                                          map { $tag{"OPENSSL_NO_".$_} == -1 ? $_ : "" }
666                                          @known_algorithms);
667                                 push @current_algorithms
668                                     , grep(!/^$/,
669                                          map { $tag{"OPENSSL_USE_".$_} == 1 ? $_ : "" }
670                                          @known_algorithms);
671                                 $def .=
672                                     "#INFO:"
673                                         .join(',',@current_platforms).":"
674                                             .join(',',@current_algorithms).";";
675                                 next;
676                         }
677                         if ($tag{'TRUE'} != -1) {
678                                 if (/^\s*DECLARE_STACK_OF\s*\(\s*(\w*)\s*\)/) {
679                                         next;
680                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
681                                         $def .= "int d2i_$3(void);";
682                                         $def .= "int i2d_$3(void);";
683                                         # Variant for platforms that do not
684                                         # have to access globale variables
685                                         # in shared libraries through functions
686                                         $def .=
687                                             "#INFO:"
688                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
689                                                     .join(',',@current_algorithms).";";
690                                         $def .= "OPENSSL_EXTERN int $2_it;";
691                                         $def .=
692                                             "#INFO:"
693                                                 .join(',',@current_platforms).":"
694                                                     .join(',',@current_algorithms).";";
695                                         # Variant for platforms that have to
696                                         # access globale variables in shared
697                                         # libraries through functions
698                                         &$make_variant("$2_it","$2_it",
699                                                       "EXPORT_VAR_AS_FUNCTION",
700                                                       "FUNCTION");
701                                         next;
702                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_fname\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
703                                         $def .= "int d2i_$3(void);";
704                                         $def .= "int i2d_$3(void);";
705                                         $def .= "int $3_free(void);";
706                                         $def .= "int $3_new(void);";
707                                         # Variant for platforms that do not
708                                         # have to access globale variables
709                                         # in shared libraries through functions
710                                         $def .=
711                                             "#INFO:"
712                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
713                                                     .join(',',@current_algorithms).";";
714                                         $def .= "OPENSSL_EXTERN int $2_it;";
715                                         $def .=
716                                             "#INFO:"
717                                                 .join(',',@current_platforms).":"
718                                                     .join(',',@current_algorithms).";";
719                                         # Variant for platforms that have to
720                                         # access globale variables in shared
721                                         # libraries through functions
722                                         &$make_variant("$2_it","$2_it",
723                                                       "EXPORT_VAR_AS_FUNCTION",
724                                                       "FUNCTION");
725                                         next;
726                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS\s*\(\s*(\w*)\s*\)/ ||
727                                          /^\s*DECLARE_ASN1_FUNCTIONS_const\s*\(\s*(\w*)\s*\)/) {
728                                         $def .= "int d2i_$1(void);";
729                                         $def .= "int i2d_$1(void);";
730                                         $def .= "int $1_free(void);";
731                                         $def .= "int $1_new(void);";
732                                         # Variant for platforms that do not
733                                         # have to access globale variables
734                                         # in shared libraries through functions
735                                         $def .=
736                                             "#INFO:"
737                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
738                                                     .join(',',@current_algorithms).";";
739                                         $def .= "OPENSSL_EXTERN int $1_it;";
740                                         $def .=
741                                             "#INFO:"
742                                                 .join(',',@current_platforms).":"
743                                                     .join(',',@current_algorithms).";";
744                                         # Variant for platforms that have to
745                                         # access globale variables in shared
746                                         # libraries through functions
747                                         &$make_variant("$1_it","$1_it",
748                                                       "EXPORT_VAR_AS_FUNCTION",
749                                                       "FUNCTION");
750                                         next;
751                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS_const\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
752                                         $def .= "int d2i_$2(void);";
753                                         $def .= "int i2d_$2(void);";
754                                         # Variant for platforms that do not
755                                         # have to access globale variables
756                                         # in shared libraries through functions
757                                         $def .=
758                                             "#INFO:"
759                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
760                                                     .join(',',@current_algorithms).";";
761                                         $def .= "OPENSSL_EXTERN int $2_it;";
762                                         $def .=
763                                             "#INFO:"
764                                                 .join(',',@current_platforms).":"
765                                                     .join(',',@current_algorithms).";";
766                                         # Variant for platforms that have to
767                                         # access globale variables in shared
768                                         # libraries through functions
769                                         &$make_variant("$2_it","$2_it",
770                                                       "EXPORT_VAR_AS_FUNCTION",
771                                                       "FUNCTION");
772                                         next;
773                                 } elsif (/^\s*DECLARE_ASN1_ALLOC_FUNCTIONS\s*\(\s*(\w*)\s*\)/) {
774                                         $def .= "int $1_free(void);";
775                                         $def .= "int $1_new(void);";
776                                         next;
777                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
778                                         $def .= "int d2i_$2(void);";
779                                         $def .= "int i2d_$2(void);";
780                                         $def .= "int $2_free(void);";
781                                         $def .= "int $2_new(void);";
782                                         # Variant for platforms that do not
783                                         # have to access globale variables
784                                         # in shared libraries through functions
785                                         $def .=
786                                             "#INFO:"
787                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
788                                                     .join(',',@current_algorithms).";";
789                                         $def .= "OPENSSL_EXTERN int $2_it;";
790                                         $def .=
791                                             "#INFO:"
792                                                 .join(',',@current_platforms).":"
793                                                     .join(',',@current_algorithms).";";
794                                         # Variant for platforms that have to
795                                         # access globale variables in shared
796                                         # libraries through functions
797                                         &$make_variant("$2_it","$2_it",
798                                                       "EXPORT_VAR_AS_FUNCTION",
799                                                       "FUNCTION");
800                                         next;
801                                 } elsif (/^\s*DECLARE_ASN1_ITEM\s*\(\s*(\w*)\s*\)/) {
802                                         # Variant for platforms that do not
803                                         # have to access globale variables
804                                         # in shared libraries through functions
805                                         $def .=
806                                             "#INFO:"
807                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
808                                                     .join(',',@current_algorithms).";";
809                                         $def .= "OPENSSL_EXTERN int $1_it;";
810                                         $def .=
811                                             "#INFO:"
812                                                 .join(',',@current_platforms).":"
813                                                     .join(',',@current_algorithms).";";
814                                         # Variant for platforms that have to
815                                         # access globale variables in shared
816                                         # libraries through functions
817                                         &$make_variant("$1_it","$1_it",
818                                                       "EXPORT_VAR_AS_FUNCTION",
819                                                       "FUNCTION");
820                                         next;
821                                 } elsif (/^\s*DECLARE_ASN1_NDEF_FUNCTION\s*\(\s*(\w*)\s*\)/) {
822                                         $def .= "int i2d_$1_NDEF(void);";
823                                 } elsif (/^\s*DECLARE_ASN1_SET_OF\s*\(\s*(\w*)\s*\)/) {
824                                         next;
825                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION\s*\(\s*(\w*)\s*\)/) {
826                                         $def .= "int $1_print_ctx(void);";
827                                         next;
828                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
829                                         $def .= "int $2_print_ctx(void);";
830                                         next;
831                                 } elsif (/^\s*DECLARE_PKCS12_STACK_OF\s*\(\s*(\w*)\s*\)/) {
832                                         next;
833                                 } elsif (/^DECLARE_PEM_rw\s*\(\s*(\w*)\s*,/ ||
834                                          /^DECLARE_PEM_rw_cb\s*\(\s*(\w*)\s*,/ ||
835                                          /^DECLARE_PEM_rw_const\s*\(\s*(\w*)\s*,/ ) {
836                                         $def .=
837                                             "#INFO:"
838                                                 .join(',',@current_platforms).":"
839                                                     .join(',',@current_algorithms).";";
840                                         $def .= "int PEM_read_$1(void);";
841                                         $def .= "int PEM_write_$1(void);";
842                                         $def .=
843                                             "#INFO:"
844                                                 .join(',',@current_platforms).":"
845                                                     .join(',',@current_algorithms).";";
846                                         # Things that are everywhere
847                                         $def .= "int PEM_read_bio_$1(void);";
848                                         $def .= "int PEM_write_bio_$1(void);";
849                                         next;
850                                 } elsif (/^DECLARE_PEM_write\s*\(\s*(\w*)\s*,/ ||
851                                         /^DECLARE_PEM_write_const\s*\(\s*(\w*)\s*,/ ||
852                                          /^DECLARE_PEM_write_cb\s*\(\s*(\w*)\s*,/ ) {
853                                         $def .=
854                                             "#INFO:"
855                                                 .join(',',@current_platforms).":"
856                                                     .join(',',@current_algorithms).";";
857                                         $def .= "int PEM_write_$1(void);";
858                                         $def .=
859                                             "#INFO:"
860                                                 .join(',',@current_platforms).":"
861                                                     .join(',',@current_algorithms).";";
862                                         # Things that are everywhere
863                                         $def .= "int PEM_write_bio_$1(void);";
864                                         next;
865                                 } elsif (/^DECLARE_PEM_read\s*\(\s*(\w*)\s*,/ ||
866                                          /^DECLARE_PEM_read_cb\s*\(\s*(\w*)\s*,/ ) {
867                                         $def .=
868                                             "#INFO:"
869                                                 .join(',',@current_platforms).":"
870                                                     .join(',',@current_algorithms).";";
871                                         $def .= "int PEM_read_$1(void);";
872                                         $def .=
873                                             "#INFO:"
874                                                 .join(',',@current_platforms).":"
875                                                     .join(',',@current_algorithms).";";
876                                         # Things that are everywhere
877                                         $def .= "int PEM_read_bio_$1(void);";
878                                         next;
879                                 } elsif (/^OPENSSL_DECLARE_GLOBAL\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
880                                         # Variant for platforms that do not
881                                         # have to access globale variables
882                                         # in shared libraries through functions
883                                         $def .=
884                                             "#INFO:"
885                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
886                                                     .join(',',@current_algorithms).";";
887                                         $def .= "OPENSSL_EXTERN int _shadow_$2;";
888                                         $def .=
889                                             "#INFO:"
890                                                 .join(',',@current_platforms).":"
891                                                     .join(',',@current_algorithms).";";
892                                         # Variant for platforms that have to
893                                         # access globale variables in shared
894                                         # libraries through functions
895                                         &$make_variant("_shadow_$2","_shadow_$2",
896                                                       "EXPORT_VAR_AS_FUNCTION",
897                                                       "FUNCTION");
898                                 } elsif (/^\s*DECLARE_DEPRECATED\s*\(\s*(\w*(\s|\*|\w)*)/) {
899                                         $def .= "$1(void);";
900                                         $parens = count_parens($_);
901                                         next;
902                                 } elsif ($tag{'CONST_STRICT'} != 1) {
903                                         if (/\{|\/\*|\([^\)]*$/) {
904                                                 $line = $_;
905                                         } else {
906                                                 $def .= $_;
907                                         }
908                                 }
909                         }
910                 }
911                 close(IN);
912
913                 my $algs;
914                 my $plays;
915
916                 print STDERR "DEBUG: postprocessing ----------\n" if $debug;
917                 foreach (split /;/, $def) {
918                         my $s; my $k = "FUNCTION"; my $p; my $a;
919                         s/^[\n\s]*//g;
920                         s/[\n\s]*$//g;
921                         next if(/\#undef/);
922                         next if(/typedef\W/);
923                         next if(/\#define/);
924
925                         # Reduce argument lists to empty ()
926                         # fold round brackets recursively: (t(*v)(t),t) -> (t{}{},t) -> {}
927                         while(/\(.*\)/s) {
928                                 s/\([^\(\)]+\)/\{\}/gs;
929                                 s/\(\s*\*\s*(\w+)\s*\{\}\s*\)/$1/gs;    #(*f{}) -> f
930                         }
931                         # pretend as we didn't use curly braces: {} -> ()
932                         s/\{\}/\(\)/gs;
933
934                         s/STACK_OF\(\)/void/gs;
935                         s/LHASH_OF\(\)/void/gs;
936
937                         print STDERR "DEBUG: \$_ = \"$_\"\n" if $debug;
938                         if (/^\#INFO:([^:]*):(.*)$/) {
939                                 $plats = $1;
940                                 $algs = $2;
941                                 print STDERR "DEBUG: found info on platforms ($plats) and algorithms ($algs)\n" if $debug;
942                                 next;
943                         } elsif (/^\s*OPENSSL_EXTERN\s.*?(\w+(\{[0-9]+\})?)(\[[0-9]*\])*\s*$/) {
944                                 $s = $1;
945                                 $k = "VARIABLE";
946                                 print STDERR "DEBUG: found external variable $s\n" if $debug;
947                         } elsif (/TYPEDEF_\w+_OF/s) {
948                                 next;
949                         } elsif (/(\w+)\s*\(\).*/s) {   # first token prior [first] () is
950                                 $s = $1;                # a function name!
951                                 print STDERR "DEBUG: found function $s\n" if $debug;
952                         } elsif (/\(/ and not (/=/)) {
953                                 print STDERR "File $file: cannot parse: $_;\n";
954                                 next;
955                         } else {
956                                 next;
957                         }
958
959                         $syms{$s} = 1;
960                         $kind{$s} = $k;
961
962                         $p = $plats;
963                         $a = $algs;
964                         $a .= ",BF" if($s =~ /EVP_bf/);
965                         $a .= ",CAST" if($s =~ /EVP_cast/);
966                         $a .= ",DES" if($s =~ /EVP_des/);
967                         $a .= ",DSA" if($s =~ /EVP_dss/);
968                         $a .= ",IDEA" if($s =~ /EVP_idea/);
969                         $a .= ",MD2" if($s =~ /EVP_md2/);
970                         $a .= ",MD4" if($s =~ /EVP_md4/);
971                         $a .= ",MD5" if($s =~ /EVP_md5/);
972                         $a .= ",RC2" if($s =~ /EVP_rc2/);
973                         $a .= ",RC4" if($s =~ /EVP_rc4/);
974                         $a .= ",RC5" if($s =~ /EVP_rc5/);
975                         $a .= ",RMD160" if($s =~ /EVP_ripemd/);
976                         $a .= ",RSA" if($s =~ /EVP_(Open|Seal)(Final|Init)/);
977                         $a .= ",RSA" if($s =~ /PEM_Seal(Final|Init|Update)/);
978                         $a .= ",RSA" if($s =~ /RSAPrivateKey/);
979                         $a .= ",RSA" if($s =~ /SSLv23?_((client|server)_)?method/);
980
981                         $platform{$s} =
982                             &reduce_platforms((defined($platform{$s})?$platform{$s}.',':"").$p);
983                         $algorithm{$s} .= ','.$a;
984
985                         if (defined($variant{$s})) {
986                                 foreach $v (split /;/,$variant{$s}) {
987                                         (my $r, my $p, my $k) = split(/:/,$v);
988                                         my $ip = join ',',map({ /^!(.*)$/ ? $1 : "!".$_ } split /,/, $p);
989                                         $syms{$r} = 1;
990                                         if (!defined($k)) { $k = $kind{$s}; }
991                                         $kind{$r} = $k."(".$s.")";
992                                         $algorithm{$r} = $algorithm{$s};
993                                         $platform{$r} = &reduce_platforms($platform{$s}.",".$p.",".$p);
994                                         $platform{$s} = &reduce_platforms($platform{$s}.','.$ip.','.$ip);
995                                         print STDERR "DEBUG: \$variant{\"$s\"} = ",$v,"; \$r = $r; \$p = ",$platform{$r},"; \$a = ",$algorithm{$r},"; \$kind = ",$kind{$r},"\n" if $debug;
996                                 }
997                         }
998                         print STDERR "DEBUG: \$s = $s; \$p = ",$platform{$s},"; \$a = ",$algorithm{$s},"; \$kind = ",$kind{$s},"\n" if $debug;
999                 }
1000         }
1001
1002         # Prune the returned symbols
1003
1004         delete $syms{"bn_dump1"};
1005         $platform{"BIO_s_log"} .= ",!WIN32,!macintosh";
1006
1007         $platform{"PEM_read_NS_CERT_SEQ"} = "VMS";
1008         $platform{"PEM_write_NS_CERT_SEQ"} = "VMS";
1009         $platform{"PEM_read_P8_PRIV_KEY_INFO"} = "VMS";
1010         $platform{"PEM_write_P8_PRIV_KEY_INFO"} = "VMS";
1011         $platform{"EVP_sha384"} = "!VMSVAX";
1012         $platform{"EVP_sha512"} = "!VMSVAX";
1013         $platform{"SHA384_Init"} = "!VMSVAX";
1014         $platform{"SHA384_Transform"} = "!VMSVAX";
1015         $platform{"SHA384_Update"} = "!VMSVAX";
1016         $platform{"SHA384_Final"} = "!VMSVAX";
1017         $platform{"SHA384"} = "!VMSVAX";
1018         $platform{"SHA512_Init"} = "!VMSVAX";
1019         $platform{"SHA512_Transform"} = "!VMSVAX";
1020         $platform{"SHA512_Update"} = "!VMSVAX";
1021         $platform{"SHA512_Final"} = "!VMSVAX";
1022         $platform{"SHA512"} = "!VMSVAX";
1023
1024
1025         # Info we know about
1026
1027         push @ret, map { $_."\\".&info_string($_,"EXIST",
1028                                               $platform{$_},
1029                                               $kind{$_},
1030                                               $algorithm{$_}) } keys %syms;
1031
1032         if (keys %unknown_algorithms) {
1033                 print STDERR "WARNING: mkdef.pl doesn't know the following algorithms:\n";
1034                 print STDERR "\t",join("\n\t",keys %unknown_algorithms),"\n";
1035         }
1036         return(@ret);
1037 }
1038
1039 # Param: string of comma-separated platform-specs.
1040 sub reduce_platforms
1041 {
1042         my ($platforms) = @_;
1043         my $pl = defined($platforms) ? $platforms : "";
1044         my %p = map { $_ => 0 } split /,/, $pl;
1045         my $ret;
1046
1047         print STDERR "DEBUG: Entered reduce_platforms with \"$platforms\"\n"
1048             if $debug;
1049         # We do this, because if there's code like the following, it really
1050         # means the function exists in all cases and should therefore be
1051         # everywhere.  By increasing and decreasing, we may attain 0:
1052         #
1053         # ifndef WIN16
1054         #    int foo();
1055         # else
1056         #    int _fat foo();
1057         # endif
1058         foreach $platform (split /,/, $pl) {
1059                 if ($platform =~ /^!(.*)$/) {
1060                         $p{$1}--;
1061                 } else {
1062                         $p{$platform}++;
1063                 }
1064         }
1065         foreach $platform (keys %p) {
1066                 if ($p{$platform} == 0) { delete $p{$platform}; }
1067         }
1068
1069         delete $p{""};
1070
1071         $ret = join(',',sort(map { $p{$_} < 0 ? "!".$_ : $_ } keys %p));
1072         print STDERR "DEBUG: Exiting reduce_platforms with \"$ret\"\n"
1073             if $debug;
1074         return $ret;
1075 }
1076
1077 sub info_string {
1078         (my $symbol, my $exist, my $platforms, my $kind, my $algorithms) = @_;
1079
1080         my %a = defined($algorithms) ?
1081             map { $_ => 1 } split /,/, $algorithms : ();
1082         my $k = defined($kind) ? $kind : "FUNCTION";
1083         my $ret;
1084         my $p = &reduce_platforms($platforms);
1085
1086         delete $a{""};
1087
1088         $ret = $exist;
1089         $ret .= ":".$p;
1090         $ret .= ":".$k;
1091         $ret .= ":".join(',',sort keys %a);
1092         return $ret;
1093 }
1094
1095 sub maybe_add_info {
1096         (my $name, *nums, my @symbols) = @_;
1097         my $sym;
1098         my $new_info = 0;
1099         my %syms=();
1100
1101         print STDERR "Updating $name info\n";
1102         foreach $sym (@symbols) {
1103                 (my $s, my $i) = split /\\/, $sym;
1104                 if (defined($nums{$s})) {
1105                         $i =~ s/^(.*?:.*?:\w+)(\(\w+\))?/$1/;
1106                         (my $n, my $dummy) = split /\\/, $nums{$s};
1107                         if (!defined($dummy) || $i ne $dummy) {
1108                                 $nums{$s} = $n."\\".$i;
1109                                 $new_info++;
1110                                 print STDERR "DEBUG: maybe_add_info for $s: \"$dummy\" => \"$i\"\n" if $debug;
1111                         }
1112                 }
1113                 $syms{$s} = 1;
1114         }
1115
1116         my @s=sort { &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n") } keys %nums;
1117         foreach $sym (@s) {
1118                 (my $n, my $i) = split /\\/, $nums{$sym};
1119                 if (!defined($syms{$sym}) && $i !~ /^NOEXIST:/) {
1120                         $new_info++;
1121                         print STDERR "DEBUG: maybe_add_info for $sym: -> undefined\n" if $debug;
1122                 }
1123         }
1124         if ($new_info) {
1125                 print STDERR "$new_info old symbols got an info update\n";
1126                 if (!$do_rewrite) {
1127                         print STDERR "You should do a rewrite to fix this.\n";
1128                 }
1129         } else {
1130                 print STDERR "No old symbols needed info update\n";
1131         }
1132 }
1133
1134 # Param: string of comma-separated keywords, each possibly prefixed with a "!"
1135 sub is_valid
1136 {
1137         my ($keywords_txt,$platforms) = @_;
1138         my (@keywords) = split /,/,$keywords_txt;
1139         my ($falsesum, $truesum) = (0, 1);
1140
1141         # Param: one keyword
1142         sub recognise
1143         {
1144                 my ($keyword,$platforms) = @_;
1145
1146                 if ($platforms) {
1147                         # platforms
1148                         if ($keyword eq "VMSVAX" && $VMSVAX) { return 1; }
1149                         if ($keyword eq "VMSNonVAX" && $VMSNonVAX) { return 1; }
1150                         if ($keyword eq "VMS" && $VMS) { return 1; }
1151                         if ($keyword eq "WIN32" && $W32) { return 1; }
1152                         if ($keyword eq "WINNT" && $NT) { return 1; }
1153                         if ($keyword eq "OS2" && $OS2) { return 1; }
1154                         # Special platforms:
1155                         # EXPORT_VAR_AS_FUNCTION means that global variables
1156                         # will be represented as functions.  This currently
1157                         # only happens on VMS-VAX.
1158                         if ($keyword eq "EXPORT_VAR_AS_FUNCTION" && ($VMSVAX || $W32)) {
1159                                 return 1;
1160                         }
1161                         if ($keyword eq "OPENSSL_FIPSCAPABLE") {
1162                                 return 0;
1163                         }
1164                         if ($keyword eq "OPENSSL_FIPS" && $fips) {
1165                                 return 1;
1166                         }
1167                         if ($keyword eq "ZLIB" && $zlib) { return 1; }
1168                         return 0;
1169                 } else {
1170                         # algorithms
1171                         if ($keyword eq "RC2" && $no_rc2) { return 0; }
1172                         if ($keyword eq "RC4" && $no_rc4) { return 0; }
1173                         if ($keyword eq "RC5" && $no_rc5) { return 0; }
1174                         if ($keyword eq "IDEA" && $no_idea) { return 0; }
1175                         if ($keyword eq "DES" && $no_des) { return 0; }
1176                         if ($keyword eq "BF" && $no_bf) { return 0; }
1177                         if ($keyword eq "CAST" && $no_cast) { return 0; }
1178                         if ($keyword eq "MD2" && $no_md2) { return 0; }
1179                         if ($keyword eq "MD4" && $no_md4) { return 0; }
1180                         if ($keyword eq "MD5" && $no_md5) { return 0; }
1181                         if ($keyword eq "SHA" && $no_sha) { return 0; }
1182                         if ($keyword eq "RMD160" && $no_ripemd) { return 0; }
1183                         if ($keyword eq "MDC2" && $no_mdc2) { return 0; }
1184                         if ($keyword eq "WHIRLPOOL" && $no_whirlpool) { return 0; }
1185                         if ($keyword eq "RSA" && $no_rsa) { return 0; }
1186                         if ($keyword eq "DSA" && $no_dsa) { return 0; }
1187                         if ($keyword eq "DH" && $no_dh) { return 0; }
1188                         if ($keyword eq "EC" && $no_ec) { return 0; }
1189                         if ($keyword eq "ECDSA" && $no_ecdsa) { return 0; }
1190                         if ($keyword eq "ECDH" && $no_ecdh) { return 0; }
1191                         if ($keyword eq "HMAC" && $no_hmac) { return 0; }
1192                         if ($keyword eq "AES" && $no_aes) { return 0; }
1193                         if ($keyword eq "CAMELLIA" && $no_camellia) { return 0; }
1194                         if ($keyword eq "SEED" && $no_seed) { return 0; }
1195                         if ($keyword eq "EVP" && $no_evp) { return 0; }
1196                         if ($keyword eq "LHASH" && $no_lhash) { return 0; }
1197                         if ($keyword eq "STACK" && $no_stack) { return 0; }
1198                         if ($keyword eq "ERR" && $no_err) { return 0; }
1199                         if ($keyword eq "BUFFER" && $no_buffer) { return 0; }
1200                         if ($keyword eq "BIO" && $no_bio) { return 0; }
1201                         if ($keyword eq "COMP" && $no_comp) { return 0; }
1202                         if ($keyword eq "DSO" && $no_dso) { return 0; }
1203                         if ($keyword eq "KRB5" && $no_krb5) { return 0; }
1204                         if ($keyword eq "ENGINE" && $no_engine) { return 0; }
1205                         if ($keyword eq "HW" && $no_hw) { return 0; }
1206                         if ($keyword eq "FP_API" && $no_fp_api) { return 0; }
1207                         if ($keyword eq "STATIC_ENGINE" && $no_static_engine) { return 0; }
1208                         if ($keyword eq "GMP" && $no_gmp) { return 0; }
1209                         if ($keyword eq "TLSEXT" && $no_tlsext) { return 0; }
1210                         if ($keyword eq "PSK" && $no_psk) { return 0; }
1211                         if ($keyword eq "CMS" && $no_cms) { return 0; }
1212                         if ($keyword eq "EC_NISTP_64_GCC_128" && $no_nistp_gcc)
1213                                         { return 0; }
1214                         if ($keyword eq "EC2M" && $no_ec2m) { return 0; }
1215                         if ($keyword eq "NEXTPROTONEG" && $no_nextprotoneg) { return 0; }
1216                         if ($keyword eq "SSL3_METHOD" && $no_ssl3_method) { return 0; }
1217                         if ($keyword eq "SSL_TRACE" && $no_ssl_trace) { return 0; }
1218                         if ($keyword eq "CAPIENG" && $no_capieng) { return 0; }
1219                         if ($keyword eq "JPAKE" && $no_jpake) { return 0; }
1220                         if ($keyword eq "SRP" && $no_srp) { return 0; }
1221                         if ($keyword eq "SCTP" && $no_sctp) { return 0; }
1222                         if ($keyword eq "SRTP" && $no_srtp) { return 0; }
1223                         if ($keyword eq "UNIT_TEST" && $no_unit_test) { return 0; }
1224                         if ($keyword eq "DEPRECATED" && $no_deprecated) { return 0; }
1225                         if ($keyword eq "OCB" && $no_ocb) { return 0; }
1226
1227                         # Nothing recognise as true
1228                         return 1;
1229                 }
1230         }
1231
1232         foreach $k (@keywords) {
1233                 if ($k =~ /^!(.*)$/) {
1234                         $falsesum += &recognise($1,$platforms);
1235                 } else {
1236                         $truesum *= &recognise($k,$platforms);
1237                 }
1238         }
1239         print STDERR "DEBUG: [",$#keywords,",",$#keywords < 0,"] is_valid($keywords_txt) => (\!$falsesum) && $truesum = ",(!$falsesum) && $truesum,"\n" if $debug;
1240         return (!$falsesum) && $truesum;
1241 }
1242
1243 sub print_test_file
1244 {
1245         (*OUT,my $name,*nums,my $testall,my @symbols)=@_;
1246         my $n = 1; my @e; my @r;
1247         my $sym; my $prev = ""; my $prefSSLeay;
1248
1249         (@e)=grep(/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1250         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:.*/ && !/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1251         @symbols=((sort @e),(sort @r));
1252
1253         foreach $sym (@symbols) {
1254                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1255                 my $v = 0;
1256                 $v = 1 if $i=~ /^.*?:.*?:VARIABLE/;
1257                 my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1258                 my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1259                 if (!defined($nums{$s})) {
1260                         print STDERR "Warning: $s does not have a number assigned\n"
1261                             if(!$do_update);
1262                 } elsif (is_valid($p,1) && is_valid($a,0)) {
1263                         my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1264                         if ($prev eq $s2) {
1265                                 print OUT "\t/* The following has already appeared previously */\n";
1266                                 print STDERR "Warning: Symbol '",$s2,"' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1267                         }
1268                         $prev = $s2;    # To warn about duplicates...
1269
1270                         ($nn,$ni)=($nums{$s2} =~ /^(.*?)\\(.*)$/);
1271                         if ($v) {
1272                                 print OUT "\textern int $s2; /* type unknown */ /* $nn $ni */\n";
1273                         } else {
1274                                 print OUT "\textern int $s2(); /* type unknown */ /* $nn $ni */\n";
1275                         }
1276                 }
1277         }
1278 }
1279
1280 sub get_version {
1281    local *MF;
1282    my $v = '?';
1283    open MF, 'Makefile' or return $v;
1284    while (<MF>) {
1285      $v = $1, last if /^VERSION=(.*?)\s*$/;
1286    }
1287    close MF;
1288    return $v;
1289 }
1290
1291 sub print_def_file
1292 {
1293         (*OUT,my $name,*nums,my @symbols)=@_;
1294         my $n = 1; my @e; my @r; my @v; my $prev="";
1295         my $liboptions="";
1296         my $libname = $name;
1297         my $http_vendor = 'www.openssl.org/';
1298         my $version = get_version();
1299         my $what = "OpenSSL: implementation of Secure Socket Layer";
1300         my $description = "$what $version, $name - http://$http_vendor";
1301
1302         if ($W32)
1303                 { $libname.="32"; }
1304         elsif ($OS2)
1305                 { # DLL names should not clash on the whole system.
1306                   # However, they should not have any particular relationship
1307                   # to the name of the static library.  Chose descriptive names
1308                   # (must be at most 8 chars).
1309                   my %translate = (ssl => 'open_ssl', crypto => 'cryptssl');
1310                   $libname = $translate{$name} || $name;
1311                   $liboptions = <<EOO;
1312 INITINSTANCE
1313 DATA MULTIPLE NONSHARED
1314 EOO
1315                   # Vendor field can't contain colon, drat; so we omit http://
1316                   $description = "\@#$http_vendor:$version#\@$what; DLL for library $name.  Build for EMX -Zmtd";
1317                 }
1318
1319         print OUT <<"EOF";
1320 ;
1321 ; Definition file for the DLL version of the $name library from OpenSSL
1322 ;
1323
1324 LIBRARY         $libname        $liboptions
1325
1326 EOF
1327
1328         print "EXPORTS\n";
1329
1330         (@e)=grep(/^SSLeay(\{[0-9]+\})?\\.*?:.*?:FUNCTION/,@symbols);
1331         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:FUNCTION/ && !/^SSLeay(\{[0-9]+\})?\\.*?:.*?:FUNCTION/,@symbols);
1332         (@v)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:VARIABLE/,@symbols);
1333         @symbols=((sort @e),(sort @r), (sort @v));
1334
1335
1336         foreach $sym (@symbols) {
1337                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1338                 my $v = 0;
1339                 $v = 1 if $i =~ /^.*?:.*?:VARIABLE/;
1340                 if (!defined($nums{$s})) {
1341                         printf STDERR "Warning: $s does not have a number assigned\n"
1342                             if(!$do_update);
1343                 } else {
1344                         (my $n, my $dummy) = split /\\/, $nums{$s};
1345                         my %pf = ();
1346                         my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1347                         my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1348                         if (is_valid($p,1) && is_valid($a,0)) {
1349                                 my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1350                                 if ($prev eq $s2) {
1351                                         print STDERR "Warning: Symbol '",$s2,"' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1352                                 }
1353                                 $prev = $s2;    # To warn about duplicates...
1354                                 if($v && !$OS2) {
1355                                         printf OUT "    %s%-39s @%-8d DATA\n",($W32)?"":"_",$s2,$n;
1356                                 } else {
1357                                         printf OUT "    %s%-39s @%d\n",($W32||$OS2)?"":"_",$s2,$n;
1358                                 }
1359                         }
1360                 }
1361         }
1362         printf OUT "\n";
1363 }
1364
1365 sub load_numbers
1366 {
1367         my($name)=@_;
1368         my(@a,%ret);
1369
1370         $max_num = 0;
1371         $num_noinfo = 0;
1372         $prev = "";
1373         $prev_cnt = 0;
1374
1375         open(IN,"<$name") || die "unable to open $name:$!\n";
1376         while (<IN>) {
1377                 chop;
1378                 s/#.*$//;
1379                 next if /^\s*$/;
1380                 @a=split;
1381                 if (defined $ret{$a[0]}) {
1382                         # This is actually perfectly OK
1383                         #print STDERR "Warning: Symbol '",$a[0],"' redefined. old=",$ret{$a[0]},", new=",$a[1],"\n";
1384                 }
1385                 if ($max_num > $a[1]) {
1386                         print STDERR "Warning: Number decreased from ",$max_num," to ",$a[1],"\n";
1387                 }
1388                 elsif ($max_num == $a[1]) {
1389                         # This is actually perfectly OK
1390                         #print STDERR "Warning: Symbol ",$a[0]," has same number as previous ",$prev,": ",$a[1],"\n";
1391                         if ($a[0] eq $prev) {
1392                                 $prev_cnt++;
1393                                 $a[0] .= "{$prev_cnt}";
1394                         }
1395                 }
1396                 else {
1397                         $prev_cnt = 0;
1398                 }
1399                 if ($#a < 2) {
1400                         # Existence will be proven later, in do_defs
1401                         $ret{$a[0]}=$a[1];
1402                         $num_noinfo++;
1403                 } else {
1404                         $ret{$a[0]}=$a[1]."\\".$a[2]; # \\ is a special marker
1405                 }
1406                 $max_num = $a[1] if $a[1] > $max_num;
1407                 $prev=$a[0];
1408         }
1409         if ($num_noinfo) {
1410                 print STDERR "Warning: $num_noinfo symbols were without info.";
1411                 if ($do_rewrite) {
1412                         printf STDERR "  The rewrite will fix this.\n";
1413                 } else {
1414                         printf STDERR "  You should do a rewrite to fix this.\n";
1415                 }
1416         }
1417         close(IN);
1418         return(%ret);
1419 }
1420
1421 sub parse_number
1422 {
1423         (my $str, my $what) = @_;
1424         (my $n, my $i) = split(/\\/,$str);
1425         if ($what eq "n") {
1426                 return $n;
1427         } else {
1428                 return $i;
1429         }
1430 }
1431
1432 sub rewrite_numbers
1433 {
1434         (*OUT,$name,*nums,@symbols)=@_;
1435         my $thing;
1436
1437         print STDERR "Rewriting $name\n";
1438
1439         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1440         my $r; my %r; my %rsyms;
1441         foreach $r (@r) {
1442                 (my $s, my $i) = split /\\/, $r;
1443                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1444                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1445                 $r{$a} = $s."\\".$i;
1446                 $rsyms{$s} = 1;
1447         }
1448
1449         my %syms = ();
1450         foreach $_ (@symbols) {
1451                 (my $n, my $i) = split /\\/;
1452                 $syms{$n} = 1;
1453         }
1454
1455         my @s=sort {
1456             &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n")
1457             || $a cmp $b
1458         } keys %nums;
1459         foreach $sym (@s) {
1460                 (my $n, my $i) = split /\\/, $nums{$sym};
1461                 next if defined($i) && $i =~ /^.*?:.*?:\w+\(\w+\)/;
1462                 next if defined($rsyms{$sym});
1463                 print STDERR "DEBUG: rewrite_numbers for sym = ",$sym,": i = ",$i,", n = ",$n,", rsym{sym} = ",$rsyms{$sym},"syms{sym} = ",$syms{$sym},"\n" if $debug;
1464                 $i="NOEXIST::FUNCTION:"
1465                         if !defined($i) || $i eq "" || !defined($syms{$sym});
1466                 my $s2 = $sym;
1467                 $s2 =~ s/\{[0-9]+\}$//;
1468                 printf OUT "%s%-39s %d\t%s\n","",$s2,$n,$i;
1469                 if (exists $r{$sym}) {
1470                         (my $s, $i) = split /\\/,$r{$sym};
1471                         my $s2 = $s;
1472                         $s2 =~ s/\{[0-9]+\}$//;
1473                         printf OUT "%s%-39s %d\t%s\n","",$s2,$n,$i;
1474                 }
1475         }
1476 }
1477
1478 sub update_numbers
1479 {
1480         (*OUT,$name,*nums,my $start_num, my @symbols)=@_;
1481         my $new_syms = 0;
1482
1483         print STDERR "Updating $name numbers\n";
1484
1485         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1486         my $r; my %r; my %rsyms;
1487         foreach $r (@r) {
1488                 (my $s, my $i) = split /\\/, $r;
1489                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1490                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1491                 $r{$a} = $s."\\".$i;
1492                 $rsyms{$s} = 1;
1493         }
1494
1495         foreach $sym (@symbols) {
1496                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1497                 next if $i =~ /^.*?:.*?:\w+\(\w+\)/;
1498                 next if defined($rsyms{$sym});
1499                 die "ERROR: Symbol $sym had no info attached to it."
1500                     if $i eq "";
1501                 next if $i =~ /OPENSSL_FIPSCAPABLE/;
1502                 if (!exists $nums{$s}) {
1503                         $new_syms++;
1504                         my $s2 = $s;
1505                         $s2 =~ s/\{[0-9]+\}$//;
1506                         printf OUT "%s%-39s %d\t%s\n","",$s2, ++$start_num,$i;
1507                         if (exists $r{$s}) {
1508                                 ($s, $i) = split /\\/,$r{$s};
1509                                 $s =~ s/\{[0-9]+\}$//;
1510                                 printf OUT "%s%-39s %d\t%s\n","",$s, $start_num,$i;
1511                         }
1512                 }
1513         }
1514         if($new_syms) {
1515                 print STDERR "$new_syms New symbols added\n";
1516         } else {
1517                 print STDERR "No New symbols Added\n";
1518         }
1519 }
1520
1521 sub check_existing
1522 {
1523         (*nums, my @symbols)=@_;
1524         my %existing; my @remaining;
1525         @remaining=();
1526         foreach $sym (@symbols) {
1527                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1528                 $existing{$s}=1;
1529         }
1530         foreach $sym (keys %nums) {
1531                 if (!exists $existing{$sym}) {
1532                         push @remaining, $sym;
1533                 }
1534         }
1535         if(@remaining) {
1536                 print STDERR "The following symbols do not seem to exist:\n";
1537                 foreach $sym (@remaining) {
1538                         print STDERR "\t",$sym,"\n";
1539                 }
1540         }
1541 }
1542
1543 sub count_parens
1544 {
1545         my $line = shift(@_);
1546
1547         my $open = $line =~ tr/\(//;
1548         my $close = $line =~ tr/\)//;
1549
1550         return $open - $close;
1551 }
1552