a6f64e3fc3a29d779f41138973b940dde468d269
[openssl.git] / util / mkdef.pl
1 #!/usr/local/bin/perl -w
2 #
3 # generate a .def file
4 #
5 # It does this by parsing the header files and looking for the
6 # prototyped functions: it then prunes the output.
7 #
8 # Intermediary files are created, call libeay.num and ssleay.num,...
9 # Previously, they had the following format:
10 #
11 #       routine-name    nnnn
12 #
13 # But that isn't enough for a number of reasons, the first on being that
14 # this format is (needlessly) very Win32-centric, and even then...
15 # One of the biggest problems is that there's no information about what
16 # routines should actually be used, which varies with what crypto algorithms
17 # are disabled.  Also, some operating systems (for example VMS with VAX C)
18 # need to keep track of the global variables as well as the functions.
19 #
20 # So, a remake of this script is done so as to include information on the
21 # kind of symbol it is (function or variable) and what algorithms they're
22 # part of.  This will allow easy translating to .def files or the corresponding
23 # file in other operating systems (a .opt file for VMS, possibly with a .mar
24 # file).
25 #
26 # The format now becomes:
27 #
28 #       routine-name    nnnn    info
29 #
30 # and the "info" part is actually a colon-separated string of fields with
31 # the following meaning:
32 #
33 #       existence:platform:kind:algorithms
34 #
35 # - "existence" can be "EXIST" or "NOEXIST" depending on if the symbol is
36 #   found somewhere in the source, 
37 # - "platforms" is empty if it exists on all platforms, otherwise it contains
38 #   comma-separated list of the platform, just as they are if the symbol exists
39 #   for those platforms, or prepended with a "!" if not.  This helps resolve
40 #   symbol name variants for platforms where the names are too long for the
41 #   compiler or linker, or if the systems is case insensitive and there is a
42 #   clash, or the symbol is implemented differently (see
43 #   EXPORT_VAR_AS_FUNCTION).  This script assumes renaming of symbols is found
44 #   in the file crypto/symhacks.h.
45 #   The semantics for the platforms is that every item is checked against the
46 #   environment.  For the negative items ("!FOO"), if any of them is false
47 #   (i.e. "FOO" is true) in the environment, the corresponding symbol can't be
48 #   used.  For the positive itms, if all of them are false in the environment,
49 #   the corresponding symbol can't be used.  Any combination of positive and
50 #   negative items are possible, and of course leave room for some redundancy.
51 # - "kind" is "FUNCTION" or "VARIABLE".  The meaning of that is obvious.
52 # - "algorithms" is a comma-separated list of algorithm names.  This helps
53 #   exclude symbols that are part of an algorithm that some user wants to
54 #   exclude.
55 #
56
57 my $debug=0;
58
59 my $crypto_num= "util/libeay.num";
60 my $ssl_num=    "util/ssleay.num";
61 my $libname;
62
63 my $do_update = 0;
64 my $do_rewrite = 1;
65 my $do_crypto = 0;
66 my $do_ssl = 0;
67 my $do_ctest = 0;
68 my $do_ctestall = 0;
69 my $do_checkexist = 0;
70
71 my $VMSVAX=0;
72 my $VMSNonVAX=0;
73 my $VMS=0;
74 my $W32=0;
75 my $NT=0;
76 my $OS2=0;
77 # Set this to make typesafe STACK definitions appear in DEF
78 my $safe_stack_def = 0;
79
80 my @known_platforms = ( "__FreeBSD__", "PERL5",
81                         "EXPORT_VAR_AS_FUNCTION", "ZLIB",
82                         "OPENSSL_FIPS", "OPENSSL_FIPSCAPABLE" );
83 my @known_ossl_platforms = ( "VMS", "WIN32", "WINNT", "OS2" );
84 my @known_algorithms = ( "RC2", "RC4", "RC5", "IDEA", "DES", "BF",
85                          "CAST", "MD2", "MD4", "MD5", "SHA", "SHA0", "SHA1",
86                          "SHA256", "SHA512", "RIPEMD",
87                          "MDC2", "WHIRLPOOL", "RSA", "DSA", "DH", "EC", "ECDH", "ECDSA", "EC2M",
88                          "HMAC", "AES", "CAMELLIA", "SEED", "GOST",
89                          # EC_NISTP_64_GCC_128
90                          "EC_NISTP_64_GCC_128",
91                          # Envelope "algorithms"
92                          "EVP", "X509", "ASN1_TYPEDEFS",
93                          # Helper "algorithms"
94                          "BIO", "COMP", "BUFFER", "LHASH", "STACK", "ERR",
95                          "LOCKING",
96                          # External "algorithms"
97                          "FP_API", "STDIO", "SOCK", "KRB5", "DGRAM",
98                          # Engines
99                          "STATIC_ENGINE", "ENGINE", "HW", "GMP",
100                          # 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                          # Hide SSL internals
115                          "SSL_INTERN",
116                          # SCTP
117                          "SCTP",
118                          # SRTP
119                          "SRTP",
120                          # SSL TRACE
121                          "SSL_TRACE",
122                          # Unit testing
123                          "UNIT_TEST");
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 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;
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; $no_mdc2=1; }
200         elsif (/^no-bf$/)       { $no_bf=1; }
201         elsif (/^no-cast$/)     { $no_cast=1; }
202         elsif (/^no-whirlpool$/)     { $no_whirlpool=1; }
203         elsif (/^no-md2$/)      { $no_md2=1; }
204         elsif (/^no-md4$/)      { $no_md4=1; }
205         elsif (/^no-md5$/)      { $no_md5=1; }
206         elsif (/^no-sha$/)      { $no_sha=1; }
207         elsif (/^no-ripemd$/)   { $no_ripemd=1; }
208         elsif (/^no-mdc2$/)     { $no_mdc2=1; }
209         elsif (/^no-rsa$/)      { $no_rsa=1; }
210         elsif (/^no-dsa$/)      { $no_dsa=1; }
211         elsif (/^no-dh$/)       { $no_dh=1; }
212         elsif (/^no-ec$/)       { $no_ec=1; }
213         elsif (/^no-ecdsa$/)    { $no_ecdsa=1; }
214         elsif (/^no-ecdh$/)     { $no_ecdh=1; }
215         elsif (/^no-hmac$/)     { $no_hmac=1; }
216         elsif (/^no-aes$/)      { $no_aes=1; }
217         elsif (/^no-camellia$/) { $no_camellia=1; }
218         elsif (/^no-seed$/)     { $no_seed=1; }
219         elsif (/^no-evp$/)      { $no_evp=1; }
220         elsif (/^no-lhash$/)    { $no_lhash=1; }
221         elsif (/^no-stack$/)    { $no_stack=1; }
222         elsif (/^no-err$/)      { $no_err=1; }
223         elsif (/^no-buffer$/)   { $no_buffer=1; }
224         elsif (/^no-bio$/)      { $no_bio=1; }
225         #elsif (/^no-locking$/) { $no_locking=1; }
226         elsif (/^no-comp$/)     { $no_comp=1; }
227         elsif (/^no-dso$/)      { $no_dso=1; }
228         elsif (/^no-krb5$/)     { $no_krb5=1; }
229         elsif (/^no-engine$/)   { $no_engine=1; }
230         elsif (/^no-hw$/)       { $no_hw=1; }
231         elsif (/^no-gmp$/)      { $no_gmp=1; }
232         elsif (/^no-tlsext$/)   { $no_tlsext=1; }
233         elsif (/^no-cms$/)      { $no_cms=1; }
234         elsif (/^no-ec2m$/)     { $no_ec2m=1; }
235         elsif (/^no-ec-nistp224-64-gcc-128$/)   { $no_nistp_gcc=1; }
236         elsif (/^no-nextprotoneg$/)     { $no_nextprotoneg=1; }
237         elsif (/^no-ssl3-method$/) { $no_ssl3_method=1; }
238         elsif (/^no-ssl-trace$/) { $no_ssl_trace=1; }
239         elsif (/^no-capieng$/)  { $no_capieng=1; }
240         elsif (/^no-jpake$/)    { $no_jpake=1; }
241         elsif (/^no-srp$/)      { $no_srp=1; }
242         elsif (/^no-sctp$/)     { $no_sctp=1; }
243         elsif (/^no-srtp$/)     { $no_srtp=1; }
244         elsif (/^no-unit-test$/){ $no_unit_test=1; }
245         elsif (/^no-deprecated$/) { $no_deprecated=1; }
246         }
247
248
249 if (!$libname) { 
250         if ($do_ssl) {
251                 $libname="SSLEAY";
252         }
253         if ($do_crypto) {
254                 $libname="LIBEAY";
255         }
256 }
257
258 # If no platform is given, assume WIN32
259 if ($W32 + $VMS + $OS2 == 0) {
260         $W32 = 1;
261 }
262
263 if (!$do_ssl && !$do_crypto)
264         {
265         print STDERR "usage: $0 ( ssl | crypto ) [ 16 | 32 | NT | OS2 ]\n";
266         exit(1);
267         }
268
269 %ssl_list=&load_numbers($ssl_num);
270 $max_ssl = $max_num;
271 %crypto_list=&load_numbers($crypto_num);
272 $max_crypto = $max_num;
273
274 my $ssl="ssl/ssl.h";
275 $ssl.=" ssl/kssl.h";
276 $ssl.=" ssl/tls1.h";
277 $ssl.=" ssl/srtp.h";
278
279 my $crypto ="crypto/crypto.h";
280 $crypto.=" crypto/cryptlib.h";
281 $crypto.=" crypto/o_dir.h";
282 $crypto.=" crypto/o_str.h";
283 $crypto.=" crypto/des/des.h crypto/des/des_old.h" ; # unless $no_des;
284 $crypto.=" crypto/idea/idea.h" ; # unless $no_idea;
285 $crypto.=" crypto/rc4/rc4.h" ; # unless $no_rc4;
286 $crypto.=" crypto/rc5/rc5.h" ; # unless $no_rc5;
287 $crypto.=" crypto/rc2/rc2.h" ; # unless $no_rc2;
288 $crypto.=" crypto/bf/blowfish.h" ; # unless $no_bf;
289 $crypto.=" crypto/cast/cast.h" ; # unless $no_cast;
290 $crypto.=" crypto/whrlpool/whrlpool.h" ;
291 $crypto.=" crypto/md2/md2.h" ; # unless $no_md2;
292 $crypto.=" crypto/md4/md4.h" ; # unless $no_md4;
293 $crypto.=" crypto/md5/md5.h" ; # unless $no_md5;
294 $crypto.=" crypto/mdc2/mdc2.h" ; # unless $no_mdc2;
295 $crypto.=" crypto/sha/sha.h" ; # unless $no_sha;
296 $crypto.=" crypto/ripemd/ripemd.h" ; # unless $no_ripemd;
297 $crypto.=" crypto/aes/aes.h" ; # unless $no_aes;
298 $crypto.=" crypto/camellia/camellia.h" ; # unless $no_camellia;
299 $crypto.=" crypto/seed/seed.h"; # unless $no_seed;
300
301 $crypto.=" crypto/bn/bn.h";
302 $crypto.=" crypto/rsa/rsa.h" ; # unless $no_rsa;
303 $crypto.=" crypto/dsa/dsa.h" ; # unless $no_dsa;
304 $crypto.=" crypto/dh/dh.h" ; # unless $no_dh;
305 $crypto.=" crypto/ec/ec.h" ; # unless $no_ec;
306 $crypto.=" crypto/ecdsa/ecdsa.h" ; # unless $no_ecdsa;
307 $crypto.=" crypto/ecdh/ecdh.h" ; # unless $no_ecdh;
308 $crypto.=" crypto/hmac/hmac.h" ; # unless $no_hmac;
309 $crypto.=" crypto/cmac/cmac.h" ;
310
311 $crypto.=" crypto/engine/engine.h"; # unless $no_engine;
312 $crypto.=" crypto/stack/stack.h" ; # unless $no_stack;
313 $crypto.=" crypto/buffer/buffer.h" ; # unless $no_buffer;
314 $crypto.=" crypto/bio/bio.h" ; # unless $no_bio;
315 $crypto.=" crypto/dso/dso.h" ; # unless $no_dso;
316 $crypto.=" crypto/lhash/lhash.h" ; # unless $no_lhash;
317 $crypto.=" crypto/conf/conf.h";
318 $crypto.=" crypto/txt_db/txt_db.h";
319
320 $crypto.=" crypto/evp/evp.h" ; # unless $no_evp;
321 $crypto.=" crypto/objects/objects.h";
322 $crypto.=" crypto/pem/pem.h";
323 #$crypto.=" crypto/meth/meth.h";
324 $crypto.=" crypto/asn1/asn1.h";
325 $crypto.=" crypto/asn1/asn1t.h";
326 $crypto.=" crypto/asn1/asn1_mac.h";
327 $crypto.=" crypto/err/err.h" ; # unless $no_err;
328 $crypto.=" crypto/pkcs7/pkcs7.h";
329 $crypto.=" crypto/pkcs12/pkcs12.h";
330 $crypto.=" crypto/x509/x509.h";
331 $crypto.=" crypto/x509/x509_vfy.h";
332 $crypto.=" crypto/x509v3/x509v3.h";
333 $crypto.=" crypto/ts/ts.h";
334 $crypto.=" crypto/rand/rand.h";
335 $crypto.=" crypto/comp/comp.h" ; # unless $no_comp;
336 $crypto.=" crypto/ocsp/ocsp.h";
337 $crypto.=" crypto/ui/ui.h crypto/ui/ui_compat.h";
338 $crypto.=" crypto/krb5/krb5_asn.h";
339 #$crypto.=" crypto/store/store.h";
340 $crypto.=" crypto/pqueue/pqueue.h";
341 $crypto.=" crypto/cms/cms.h";
342 $crypto.=" crypto/jpake/jpake.h";
343 $crypto.=" crypto/srp/srp.h";
344 $crypto.=" crypto/modes/modes.h";
345
346 my $symhacks="crypto/symhacks.h";
347
348 my @ssl_symbols = &do_defs("SSLEAY", $ssl, $symhacks);
349 my @crypto_symbols = &do_defs("LIBEAY", $crypto, $symhacks);
350
351 if ($do_update) {
352
353 if ($do_ssl == 1) {
354
355         &maybe_add_info("SSLEAY",*ssl_list,@ssl_symbols);
356         if ($do_rewrite == 1) {
357                 open(OUT, ">$ssl_num");
358                 &rewrite_numbers(*OUT,"SSLEAY",*ssl_list,@ssl_symbols);
359         } else {
360                 open(OUT, ">>$ssl_num");
361         }
362         &update_numbers(*OUT,"SSLEAY",*ssl_list,$max_ssl,@ssl_symbols);
363         close OUT;
364 }
365
366 if($do_crypto == 1) {
367
368         &maybe_add_info("LIBEAY",*crypto_list,@crypto_symbols);
369         if ($do_rewrite == 1) {
370                 open(OUT, ">$crypto_num");
371                 &rewrite_numbers(*OUT,"LIBEAY",*crypto_list,@crypto_symbols);
372         } else {
373                 open(OUT, ">>$crypto_num");
374         }
375         &update_numbers(*OUT,"LIBEAY",*crypto_list,$max_crypto,@crypto_symbols);
376         close OUT;
377
378
379 } elsif ($do_checkexist) {
380         &check_existing(*ssl_list, @ssl_symbols)
381                 if $do_ssl == 1;
382         &check_existing(*crypto_list, @crypto_symbols)
383                 if $do_crypto == 1;
384 } elsif ($do_ctest || $do_ctestall) {
385
386         print <<"EOF";
387
388 /* Test file to check all DEF file symbols are present by trying
389  * to link to all of them. This is *not* intended to be run!
390  */
391
392 int main()
393 {
394 EOF
395         &print_test_file(*STDOUT,"SSLEAY",*ssl_list,$do_ctestall,@ssl_symbols)
396                 if $do_ssl == 1;
397
398         &print_test_file(*STDOUT,"LIBEAY",*crypto_list,$do_ctestall,@crypto_symbols)
399                 if $do_crypto == 1;
400
401         print "}\n";
402
403 } else {
404
405         &print_def_file(*STDOUT,$libname,*ssl_list,@ssl_symbols)
406                 if $do_ssl == 1;
407
408         &print_def_file(*STDOUT,$libname,*crypto_list,@crypto_symbols)
409                 if $do_crypto == 1;
410
411 }
412
413
414 sub do_defs
415 {
416         my($name,$files,$symhacksfile)=@_;
417         my $file;
418         my @ret;
419         my %syms;
420         my %platform;           # For anything undefined, we assume ""
421         my %kind;               # For anything undefined, we assume "FUNCTION"
422         my %algorithm;          # For anything undefined, we assume ""
423         my %variant;
424         my %variant_cnt;        # To be able to allocate "name{n}" if "name"
425                                 # is the same name as the original.
426         my $cpp;
427         my %unknown_algorithms = ();
428         my $parens = 0;
429
430         foreach $file (split(/\s+/,$symhacksfile." ".$files))
431                 {
432                 print STDERR "DEBUG: starting on $file:\n" if $debug;
433                 open(IN,"<$file") || die "unable to open $file:$!\n";
434                 my $line = "", my $def= "";
435                 my %tag = (
436                         (map { $_ => 0 } @known_platforms),
437                         (map { "OPENSSL_SYS_".$_ => 0 } @known_ossl_platforms),
438                         (map { "OPENSSL_NO_".$_ => 0 } @known_algorithms),
439                         (map { "OPENSSL_USE_".$_ => 0 } @known_algorithms),
440                         NOPROTO         => 0,
441                         PERL5           => 0,
442                         _WINDLL         => 0,
443                         CONST_STRICT    => 0,
444                         TRUE            => 1,
445                 );
446                 my $symhacking = $file eq $symhacksfile;
447                 my @current_platforms = ();
448                 my @current_algorithms = ();
449
450                 # params: symbol, alias, platforms, kind
451                 # The reason to put this subroutine in a variable is that
452                 # it will otherwise create it's own, unshared, version of
453                 # %tag and %variant...
454                 my $make_variant = sub
455                 {
456                         my ($s, $a, $p, $k) = @_;
457                         my ($a1, $a2);
458
459                         print STDERR "DEBUG: make_variant: Entered with ",$s,", ",$a,", ",(defined($p)?$p:""),", ",(defined($k)?$k:""),"\n" if $debug;
460                         if (defined($p))
461                         {
462                                 $a1 = join(",",$p,
463                                            grep(!/^$/,
464                                                 map { $tag{$_} == 1 ? $_ : "" }
465                                                 @known_platforms));
466                         }
467                         else
468                         {
469                                 $a1 = join(",",
470                                            grep(!/^$/,
471                                                 map { $tag{$_} == 1 ? $_ : "" }
472                                                 @known_platforms));
473                         }
474                         $a2 = join(",",
475                                    grep(!/^$/,
476                                         map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ : "" }
477                                         @known_ossl_platforms));
478                         print STDERR "DEBUG: make_variant: a1 = $a1; a2 = $a2\n" if $debug;
479                         if ($a1 eq "") { $a1 = $a2; }
480                         elsif ($a1 ne "" && $a2 ne "") { $a1 .= ",".$a2; }
481                         if ($a eq $s)
482                         {
483                                 if (!defined($variant_cnt{$s}))
484                                 {
485                                         $variant_cnt{$s} = 0;
486                                 }
487                                 $variant_cnt{$s}++;
488                                 $a .= "{$variant_cnt{$s}}";
489                         }
490                         my $toadd = $a.":".$a1.(defined($k)?":".$k:"");
491                         my $togrep = $s.'(\{[0-9]+\})?:'.$a1.(defined($k)?":".$k:"");
492                         if (!grep(/^$togrep$/,
493                                   split(/;/, defined($variant{$s})?$variant{$s}:""))) {
494                                 if (defined($variant{$s})) { $variant{$s} .= ";"; }
495                                 $variant{$s} .= $toadd;
496                         }
497                         print STDERR "DEBUG: make_variant: Exit with variant of ",$s," = ",$variant{$s},"\n" if $debug;
498                 };
499
500                 print STDERR "DEBUG: parsing ----------\n" if $debug;
501                 while(<IN>) {
502                         if($parens > 0) {
503                                 #Inside a DECLARE_DEPRECATED
504                                 $parens += count_parens($_);
505                                 next;
506                         }
507                         if (/\/\* Error codes for the \w+ functions\. \*\//)
508                                 {
509                                 undef @tag;
510                                 last;
511                                 }
512                         if ($line ne '') {
513                                 $_ = $line . $_;
514                                 $line = '';
515                         }
516
517                         if (/\\$/) {
518                                 chomp; # remove eol
519                                 chop; # remove ending backslash
520                                 $line = $_;
521                                 next;
522                         }
523
524                         if(/\/\*/) {
525                                 if (not /\*\//) {       # multiline comment...
526                                         $line = $_;     # ... just accumulate
527                                         next;
528                                 } else {
529                                         s/\/\*.*?\*\///gs;# wipe it
530                                 }
531                         }
532
533                         if ($cpp) {
534                                 $cpp++ if /^#\s*if/;
535                                 $cpp-- if /^#\s*endif/;
536                                 next;
537                         }
538                         $cpp = 1 if /^#.*ifdef.*cplusplus/;
539
540                         s/{[^{}]*}//gs;                      # ignore {} blocks
541                         print STDERR "DEBUG: \$def=\"$def\"\n" if $debug && $def ne "";
542                         print STDERR "DEBUG: \$_=\"$_\"\n" if $debug;
543                         if (/^\#\s*ifndef\s+(.*)/) {
544                                 push(@tag,"-");
545                                 push(@tag,$1);
546                                 $tag{$1}=-1;
547                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
548                         } elsif (/^\#\s*if\s+!defined\(([^\)]+)\)/) {
549                                 push(@tag,"-");
550                                 if (/^\#\s*if\s+(!defined\(([^\)]+)\)(\s+\&\&\s+!defined\(([^\)]+)\))*)$/) {
551                                         my $tmp_1 = $1;
552                                         my $tmp_;
553                                         foreach $tmp_ (split '\&\&',$tmp_1) {
554                                                 $tmp_ =~ /!defined\(([^\)]+)\)/;
555                                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
556                                                 push(@tag,$1);
557                                                 $tag{$1}=-1;
558                                         }
559                                 } else {
560                                         print STDERR "Warning: $file: complicated expression: $_" if $debug; # because it is O...
561                                         print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
562                                         push(@tag,$1);
563                                         $tag{$1}=-1;
564                                 }
565                         } elsif (/^\#\s*ifdef\s+(\S*)/) {
566                                 push(@tag,"-");
567                                 push(@tag,$1);
568                                 $tag{$1}=1;
569                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
570                         } elsif (/^\#\s*if\s+defined\(([^\)]+)\)/) {
571                                 push(@tag,"-");
572                                 if (/^\#\s*if\s+(defined\(([^\)]+)\)(\s+\|\|\s+defined\(([^\)]+)\))*)$/) {
573                                         my $tmp_1 = $1;
574                                         my $tmp_;
575                                         foreach $tmp_ (split '\|\|',$tmp_1) {
576                                                 $tmp_ =~ /defined\(([^\)]+)\)/;
577                                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
578                                                 push(@tag,$1);
579                                                 $tag{$1}=1;
580                                         }
581                                 } else {
582                                         print STDERR "Warning: $file: complicated expression: $_\n" if $debug; # because it is O...
583                                         print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
584                                         push(@tag,$1);
585                                         $tag{$1}=1;
586                                 }
587                         } elsif (/^\#\s*error\s+(\w+) is disabled\./) {
588                                 my $tag_i = $#tag;
589                                 while($tag[$tag_i] ne "-") {
590                                         if ($tag[$tag_i] eq "OPENSSL_NO_".$1) {
591                                                 $tag{$tag[$tag_i]}=2;
592                                                 print STDERR "DEBUG: $file: chaged tag $1 = 2\n" if $debug;
593                                         }
594                                         $tag_i--;
595                                 }
596                         } elsif (/^\#\s*endif/) {
597                                 my $tag_i = $#tag;
598                                 while($tag_i > 0 && $tag[$tag_i] ne "-") {
599                                         my $t=$tag[$tag_i];
600                                         print STDERR "DEBUG: \$t=\"$t\"\n" if $debug;
601                                         if ($tag{$t}==2) {
602                                                 $tag{$t}=-1;
603                                         } else {
604                                                 $tag{$t}=0;
605                                         }
606                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
607                                         pop(@tag);
608                                         if ($t =~ /^OPENSSL_NO_([A-Z0-9_]+)$/) {
609                                                 $t=$1;
610                                         } elsif($t =~ /^OPENSSL_USE_([A-Z0-9_]+)$/) {
611                                                 $t=$1;
612                                         } else {
613                                                 $t="";
614                                         }
615                                         if ($t ne ""
616                                             && !grep(/^$t$/, @known_algorithms)) {
617                                                 $unknown_algorithms{$t} = 1;
618                                                 #print STDERR "DEBUG: Added as unknown algorithm: $t\n" if $debug;
619                                         }
620                                         $tag_i--;
621                                 }
622                                 pop(@tag);
623                         } elsif (/^\#\s*else/) {
624                                 my $tag_i = $#tag;
625                                 while($tag[$tag_i] ne "-") {
626                                         my $t=$tag[$tag_i];
627                                         $tag{$t}= -$tag{$t};
628                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
629                                         $tag_i--;
630                                 }
631                         } elsif (/^\#\s*if\s+1/) {
632                                 push(@tag,"-");
633                                 # Dummy tag
634                                 push(@tag,"TRUE");
635                                 $tag{"TRUE"}=1;
636                                 print STDERR "DEBUG: $file: found 1\n" if $debug;
637                         } elsif (/^\#\s*if\s+0/) {
638                                 push(@tag,"-");
639                                 # Dummy tag
640                                 push(@tag,"TRUE");
641                                 $tag{"TRUE"}=-1;
642                                 print STDERR "DEBUG: $file: found 0\n" if $debug;
643                         } elsif (/^\#\s*define\s+(\w+)\s+(\w+)/
644                                  && $symhacking && $tag{'TRUE'} != -1) {
645                                 # This is for aliasing.  When we find an alias,
646                                 # we have to invert
647                                 &$make_variant($1,$2);
648                                 print STDERR "DEBUG: $file: defined $1 = $2\n" if $debug;
649                         }
650                         if (/^\#/) {
651                                 @current_platforms =
652                                     grep(!/^$/,
653                                          map { $tag{$_} == 1 ? $_ :
654                                                    $tag{$_} == -1 ? "!".$_  : "" }
655                                          @known_platforms);
656                                 push @current_platforms
657                                     , grep(!/^$/,
658                                            map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ :
659                                                      $tag{"OPENSSL_SYS_".$_} == -1 ? "!".$_  : "" }
660                                            @known_ossl_platforms);
661                                 @current_algorithms = ();
662                                 @current_algorithms =
663                                     grep(!/^$/,
664                                          map { $tag{"OPENSSL_NO_".$_} == -1 ? $_ : "" }
665                                          @known_algorithms);
666                                 push @current_algorithms
667                                     , grep(!/^$/,
668                                          map { $tag{"OPENSSL_USE_".$_} == 1 ? $_ : "" }
669                                          @known_algorithms);
670                                 $def .=
671                                     "#INFO:"
672                                         .join(',',@current_platforms).":"
673                                             .join(',',@current_algorithms).";";
674                                 next;
675                         }
676                         if ($tag{'TRUE'} != -1) {
677                                 if (/^\s*DECLARE_STACK_OF\s*\(\s*(\w*)\s*\)/) {
678                                         next;
679                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
680                                         $def .= "int d2i_$3(void);";
681                                         $def .= "int i2d_$3(void);";
682                                         # Variant for platforms that do not
683                                         # have to access globale variables
684                                         # in shared libraries through functions
685                                         $def .=
686                                             "#INFO:"
687                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
688                                                     .join(',',@current_algorithms).";";
689                                         $def .= "OPENSSL_EXTERN int $2_it;";
690                                         $def .=
691                                             "#INFO:"
692                                                 .join(',',@current_platforms).":"
693                                                     .join(',',@current_algorithms).";";
694                                         # Variant for platforms that have to
695                                         # access globale variables in shared
696                                         # libraries through functions
697                                         &$make_variant("$2_it","$2_it",
698                                                       "EXPORT_VAR_AS_FUNCTION",
699                                                       "FUNCTION");
700                                         next;
701                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_fname\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
702                                         $def .= "int d2i_$3(void);";
703                                         $def .= "int i2d_$3(void);";
704                                         $def .= "int $3_free(void);";
705                                         $def .= "int $3_new(void);";
706                                         # Variant for platforms that do not
707                                         # have to access globale variables
708                                         # in shared libraries through functions
709                                         $def .=
710                                             "#INFO:"
711                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
712                                                     .join(',',@current_algorithms).";";
713                                         $def .= "OPENSSL_EXTERN int $2_it;";
714                                         $def .=
715                                             "#INFO:"
716                                                 .join(',',@current_platforms).":"
717                                                     .join(',',@current_algorithms).";";
718                                         # Variant for platforms that have to
719                                         # access globale variables in shared
720                                         # libraries through functions
721                                         &$make_variant("$2_it","$2_it",
722                                                       "EXPORT_VAR_AS_FUNCTION",
723                                                       "FUNCTION");
724                                         next;
725                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS\s*\(\s*(\w*)\s*\)/ ||
726                                          /^\s*DECLARE_ASN1_FUNCTIONS_const\s*\(\s*(\w*)\s*\)/) {
727                                         $def .= "int d2i_$1(void);";
728                                         $def .= "int i2d_$1(void);";
729                                         $def .= "int $1_free(void);";
730                                         $def .= "int $1_new(void);";
731                                         # Variant for platforms that do not
732                                         # have to access globale variables
733                                         # in shared libraries through functions
734                                         $def .=
735                                             "#INFO:"
736                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
737                                                     .join(',',@current_algorithms).";";
738                                         $def .= "OPENSSL_EXTERN int $1_it;";
739                                         $def .=
740                                             "#INFO:"
741                                                 .join(',',@current_platforms).":"
742                                                     .join(',',@current_algorithms).";";
743                                         # Variant for platforms that have to
744                                         # access globale variables in shared
745                                         # libraries through functions
746                                         &$make_variant("$1_it","$1_it",
747                                                       "EXPORT_VAR_AS_FUNCTION",
748                                                       "FUNCTION");
749                                         next;
750                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS_const\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
751                                         $def .= "int d2i_$2(void);";
752                                         $def .= "int i2d_$2(void);";
753                                         # Variant for platforms that do not
754                                         # have to access globale variables
755                                         # in shared libraries through functions
756                                         $def .=
757                                             "#INFO:"
758                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
759                                                     .join(',',@current_algorithms).";";
760                                         $def .= "OPENSSL_EXTERN int $2_it;";
761                                         $def .=
762                                             "#INFO:"
763                                                 .join(',',@current_platforms).":"
764                                                     .join(',',@current_algorithms).";";
765                                         # Variant for platforms that have to
766                                         # access globale variables in shared
767                                         # libraries through functions
768                                         &$make_variant("$2_it","$2_it",
769                                                       "EXPORT_VAR_AS_FUNCTION",
770                                                       "FUNCTION");
771                                         next;
772                                 } elsif (/^\s*DECLARE_ASN1_ALLOC_FUNCTIONS\s*\(\s*(\w*)\s*\)/) {
773                                         $def .= "int $1_free(void);";
774                                         $def .= "int $1_new(void);";
775                                         next;
776                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
777                                         $def .= "int d2i_$2(void);";
778                                         $def .= "int i2d_$2(void);";
779                                         $def .= "int $2_free(void);";
780                                         $def .= "int $2_new(void);";
781                                         # Variant for platforms that do not
782                                         # have to access globale variables
783                                         # in shared libraries through functions
784                                         $def .=
785                                             "#INFO:"
786                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
787                                                     .join(',',@current_algorithms).";";
788                                         $def .= "OPENSSL_EXTERN int $2_it;";
789                                         $def .=
790                                             "#INFO:"
791                                                 .join(',',@current_platforms).":"
792                                                     .join(',',@current_algorithms).";";
793                                         # Variant for platforms that have to
794                                         # access globale variables in shared
795                                         # libraries through functions
796                                         &$make_variant("$2_it","$2_it",
797                                                       "EXPORT_VAR_AS_FUNCTION",
798                                                       "FUNCTION");
799                                         next;
800                                 } elsif (/^\s*DECLARE_ASN1_ITEM\s*\(\s*(\w*)\s*\)/) {
801                                         # Variant for platforms that do not
802                                         # have to access globale variables
803                                         # in shared libraries through functions
804                                         $def .=
805                                             "#INFO:"
806                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
807                                                     .join(',',@current_algorithms).";";
808                                         $def .= "OPENSSL_EXTERN int $1_it;";
809                                         $def .=
810                                             "#INFO:"
811                                                 .join(',',@current_platforms).":"
812                                                     .join(',',@current_algorithms).";";
813                                         # Variant for platforms that have to
814                                         # access globale variables in shared
815                                         # libraries through functions
816                                         &$make_variant("$1_it","$1_it",
817                                                       "EXPORT_VAR_AS_FUNCTION",
818                                                       "FUNCTION");
819                                         next;
820                                 } elsif (/^\s*DECLARE_ASN1_NDEF_FUNCTION\s*\(\s*(\w*)\s*\)/) {
821                                         $def .= "int i2d_$1_NDEF(void);";
822                                 } elsif (/^\s*DECLARE_ASN1_SET_OF\s*\(\s*(\w*)\s*\)/) {
823                                         next;
824                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION\s*\(\s*(\w*)\s*\)/) {
825                                         $def .= "int $1_print_ctx(void);";
826                                         next;
827                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
828                                         $def .= "int $2_print_ctx(void);";
829                                         next;
830                                 } elsif (/^\s*DECLARE_PKCS12_STACK_OF\s*\(\s*(\w*)\s*\)/) {
831                                         next;
832                                 } elsif (/^DECLARE_PEM_rw\s*\(\s*(\w*)\s*,/ ||
833                                          /^DECLARE_PEM_rw_cb\s*\(\s*(\w*)\s*,/ ||
834                                          /^DECLARE_PEM_rw_const\s*\(\s*(\w*)\s*,/ ) {
835                                         $def .=
836                                             "#INFO:"
837                                                 .join(',',@current_platforms).":"
838                                                     .join(',',@current_algorithms).";";
839                                         $def .= "int PEM_read_$1(void);";
840                                         $def .= "int PEM_write_$1(void);";
841                                         $def .=
842                                             "#INFO:"
843                                                 .join(',',@current_platforms).":"
844                                                     .join(',',@current_algorithms).";";
845                                         # Things that are everywhere
846                                         $def .= "int PEM_read_bio_$1(void);";
847                                         $def .= "int PEM_write_bio_$1(void);";
848                                         next;
849                                 } elsif (/^DECLARE_PEM_write\s*\(\s*(\w*)\s*,/ ||
850                                         /^DECLARE_PEM_write_const\s*\(\s*(\w*)\s*,/ ||
851                                          /^DECLARE_PEM_write_cb\s*\(\s*(\w*)\s*,/ ) {
852                                         $def .=
853                                             "#INFO:"
854                                                 .join(',',@current_platforms).":"
855                                                     .join(',',@current_algorithms).";";
856                                         $def .= "int PEM_write_$1(void);";
857                                         $def .=
858                                             "#INFO:"
859                                                 .join(',',@current_platforms).":"
860                                                     .join(',',@current_algorithms).";";
861                                         # Things that are everywhere
862                                         $def .= "int PEM_write_bio_$1(void);";
863                                         next;
864                                 } elsif (/^DECLARE_PEM_read\s*\(\s*(\w*)\s*,/ ||
865                                          /^DECLARE_PEM_read_cb\s*\(\s*(\w*)\s*,/ ) {
866                                         $def .=
867                                             "#INFO:"
868                                                 .join(',',@current_platforms).":"
869                                                     .join(',',@current_algorithms).";";
870                                         $def .= "int PEM_read_$1(void);";
871                                         $def .=
872                                             "#INFO:"
873                                                 .join(',',@current_platforms).":"
874                                                     .join(',',@current_algorithms).";";
875                                         # Things that are everywhere
876                                         $def .= "int PEM_read_bio_$1(void);";
877                                         next;
878                                 } elsif (/^OPENSSL_DECLARE_GLOBAL\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
879                                         # Variant for platforms that do not
880                                         # have to access globale variables
881                                         # in shared libraries through functions
882                                         $def .=
883                                             "#INFO:"
884                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
885                                                     .join(',',@current_algorithms).";";
886                                         $def .= "OPENSSL_EXTERN int _shadow_$2;";
887                                         $def .=
888                                             "#INFO:"
889                                                 .join(',',@current_platforms).":"
890                                                     .join(',',@current_algorithms).";";
891                                         # Variant for platforms that have to
892                                         # access globale variables in shared
893                                         # libraries through functions
894                                         &$make_variant("_shadow_$2","_shadow_$2",
895                                                       "EXPORT_VAR_AS_FUNCTION",
896                                                       "FUNCTION");
897                                 } elsif (/^\s*DECLARE_DEPRECATED\s*\(\s*(\w*(\s|\*|\w)*)/) {
898                                         $def .= "$1(void);";
899                                         $parens = count_parens($_);
900                                         next;
901                                 } elsif ($tag{'CONST_STRICT'} != 1) {
902                                         if (/\{|\/\*|\([^\)]*$/) {
903                                                 $line = $_;
904                                         } else {
905                                                 $def .= $_;
906                                         }
907                                 }
908                         }
909                 }
910                 close(IN);
911
912                 my $algs;
913                 my $plays;
914
915                 print STDERR "DEBUG: postprocessing ----------\n" if $debug;
916                 foreach (split /;/, $def) {
917                         my $s; my $k = "FUNCTION"; my $p; my $a;
918                         s/^[\n\s]*//g;
919                         s/[\n\s]*$//g;
920                         next if(/\#undef/);
921                         next if(/typedef\W/);
922                         next if(/\#define/);
923
924                         # Reduce argument lists to empty ()
925                         # fold round brackets recursively: (t(*v)(t),t) -> (t{}{},t) -> {}
926                         while(/\(.*\)/s) {
927                                 s/\([^\(\)]+\)/\{\}/gs;
928                                 s/\(\s*\*\s*(\w+)\s*\{\}\s*\)/$1/gs;    #(*f{}) -> f
929                         }
930                         # pretend as we didn't use curly braces: {} -> ()
931                         s/\{\}/\(\)/gs;
932
933                         s/STACK_OF\(\)/void/gs;
934                         s/LHASH_OF\(\)/void/gs;
935
936                         print STDERR "DEBUG: \$_ = \"$_\"\n" if $debug;
937                         if (/^\#INFO:([^:]*):(.*)$/) {
938                                 $plats = $1;
939                                 $algs = $2;
940                                 print STDERR "DEBUG: found info on platforms ($plats) and algorithms ($algs)\n" if $debug;
941                                 next;
942                         } elsif (/^\s*OPENSSL_EXTERN\s.*?(\w+(\{[0-9]+\})?)(\[[0-9]*\])*\s*$/) {
943                                 $s = $1;
944                                 $k = "VARIABLE";
945                                 print STDERR "DEBUG: found external variable $s\n" if $debug;
946                         } elsif (/TYPEDEF_\w+_OF/s) {
947                                 next;
948                         } elsif (/(\w+)\s*\(\).*/s) {   # first token prior [first] () is
949                                 $s = $1;                # a function name!
950                                 print STDERR "DEBUG: found function $s\n" if $debug;
951                         } elsif (/\(/ and not (/=/)) {
952                                 print STDERR "File $file: cannot parse: $_;\n";
953                                 next;
954                         } else {
955                                 next;
956                         }
957
958                         $syms{$s} = 1;
959                         $kind{$s} = $k;
960
961                         $p = $plats;
962                         $a = $algs;
963                         $a .= ",BF" if($s =~ /EVP_bf/);
964                         $a .= ",CAST" if($s =~ /EVP_cast/);
965                         $a .= ",DES" if($s =~ /EVP_des/);
966                         $a .= ",DSA" if($s =~ /EVP_dss/);
967                         $a .= ",IDEA" if($s =~ /EVP_idea/);
968                         $a .= ",MD2" if($s =~ /EVP_md2/);
969                         $a .= ",MD4" if($s =~ /EVP_md4/);
970                         $a .= ",MD5" if($s =~ /EVP_md5/);
971                         $a .= ",RC2" if($s =~ /EVP_rc2/);
972                         $a .= ",RC4" if($s =~ /EVP_rc4/);
973                         $a .= ",RC5" if($s =~ /EVP_rc5/);
974                         $a .= ",RIPEMD" if($s =~ /EVP_ripemd/);
975                         $a .= ",SHA" if($s =~ /EVP_sha/);
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 "RIPEMD" && $no_ripemd) { return 0; }
1183                         if ($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
1226                         # Nothing recognise as true
1227                         return 1;
1228                 }
1229         }
1230
1231         foreach $k (@keywords) {
1232                 if ($k =~ /^!(.*)$/) {
1233                         $falsesum += &recognise($1,$platforms);
1234                 } else {
1235                         $truesum *= &recognise($k,$platforms);
1236                 }
1237         }
1238         print STDERR "DEBUG: [",$#keywords,",",$#keywords < 0,"] is_valid($keywords_txt) => (\!$falsesum) && $truesum = ",(!$falsesum) && $truesum,"\n" if $debug;
1239         return (!$falsesum) && $truesum;
1240 }
1241
1242 sub print_test_file
1243 {
1244         (*OUT,my $name,*nums,my $testall,my @symbols)=@_;
1245         my $n = 1; my @e; my @r;
1246         my $sym; my $prev = ""; my $prefSSLeay;
1247
1248         (@e)=grep(/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1249         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:.*/ && !/^SSLeay(\{[0-9]+\})?\\.*?:.*?:.*/,@symbols);
1250         @symbols=((sort @e),(sort @r));
1251
1252         foreach $sym (@symbols) {
1253                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1254                 my $v = 0;
1255                 $v = 1 if $i=~ /^.*?:.*?:VARIABLE/;
1256                 my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1257                 my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1258                 if (!defined($nums{$s})) {
1259                         print STDERR "Warning: $s does not have a number assigned\n"
1260                             if(!$do_update);
1261                 } elsif (is_valid($p,1) && is_valid($a,0)) {
1262                         my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1263                         if ($prev eq $s2) {
1264                                 print OUT "\t/* The following has already appeared previously */\n";
1265                                 print STDERR "Warning: Symbol '",$s2,"' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1266                         }
1267                         $prev = $s2;    # To warn about duplicates...
1268
1269                         ($nn,$ni)=($nums{$s2} =~ /^(.*?)\\(.*)$/);
1270                         if ($v) {
1271                                 print OUT "\textern int $s2; /* type unknown */ /* $nn $ni */\n";
1272                         } else {
1273                                 print OUT "\textern int $s2(); /* type unknown */ /* $nn $ni */\n";
1274                         }
1275                 }
1276         }
1277 }
1278
1279 sub get_version {
1280    local *MF;
1281    my $v = '?';
1282    open MF, 'Makefile' or return $v;
1283    while (<MF>) {
1284      $v = $1, last if /^VERSION=(.*?)\s*$/;
1285    }
1286    close MF;
1287    return $v;
1288 }
1289
1290 sub print_def_file
1291 {
1292         (*OUT,my $name,*nums,my @symbols)=@_;
1293         my $n = 1; my @e; my @r; my @v; my $prev="";
1294         my $liboptions="";
1295         my $libname = $name;
1296         my $http_vendor = 'www.openssl.org/';
1297         my $version = get_version();
1298         my $what = "OpenSSL: implementation of Secure Socket Layer";
1299         my $description = "$what $version, $name - http://$http_vendor";
1300
1301         if ($W32)
1302                 { $libname.="32"; }
1303         elsif ($OS2)
1304                 { # DLL names should not clash on the whole system.
1305                   # However, they should not have any particular relationship
1306                   # to the name of the static library.  Chose descriptive names
1307                   # (must be at most 8 chars).
1308                   my %translate = (ssl => 'open_ssl', crypto => 'cryptssl');
1309                   $libname = $translate{$name} || $name;
1310                   $liboptions = <<EOO;
1311 INITINSTANCE
1312 DATA MULTIPLE NONSHARED
1313 EOO
1314                   # Vendor field can't contain colon, drat; so we omit http://
1315                   $description = "\@#$http_vendor:$version#\@$what; DLL for library $name.  Build for EMX -Zmtd";
1316                 }
1317
1318         print OUT <<"EOF";
1319 ;
1320 ; Definition file for the DLL version of the $name library from OpenSSL
1321 ;
1322
1323 LIBRARY         $libname        $liboptions
1324
1325 EOF
1326
1327         print "EXPORTS\n";
1328
1329         (@e)=grep(/^SSLeay(\{[0-9]+\})?\\.*?:.*?:FUNCTION/,@symbols);
1330         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:FUNCTION/ && !/^SSLeay(\{[0-9]+\})?\\.*?:.*?:FUNCTION/,@symbols);
1331         (@v)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:VARIABLE/,@symbols);
1332         @symbols=((sort @e),(sort @r), (sort @v));
1333
1334
1335         foreach $sym (@symbols) {
1336                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1337                 my $v = 0;
1338                 $v = 1 if $i =~ /^.*?:.*?:VARIABLE/;
1339                 if (!defined($nums{$s})) {
1340                         printf STDERR "Warning: $s does not have a number assigned\n"
1341                             if(!$do_update);
1342                 } else {
1343                         (my $n, my $dummy) = split /\\/, $nums{$s};
1344                         my %pf = ();
1345                         my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1346                         my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1347                         if (is_valid($p,1) && is_valid($a,0)) {
1348                                 my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1349                                 if ($prev eq $s2) {
1350                                         print STDERR "Warning: Symbol '",$s2,"' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1351                                 }
1352                                 $prev = $s2;    # To warn about duplicates...
1353                                 if($v && !$OS2) {
1354                                         printf OUT "    %s%-39s @%-8d DATA\n",($W32)?"":"_",$s2,$n;
1355                                 } else {
1356                                         printf OUT "    %s%-39s @%d\n",($W32||$OS2)?"":"_",$s2,$n;
1357                                 }
1358                         }
1359                 }
1360         }
1361         printf OUT "\n";
1362 }
1363
1364 sub load_numbers
1365 {
1366         my($name)=@_;
1367         my(@a,%ret);
1368
1369         $max_num = 0;
1370         $num_noinfo = 0;
1371         $prev = "";
1372         $prev_cnt = 0;
1373
1374         open(IN,"<$name") || die "unable to open $name:$!\n";
1375         while (<IN>) {
1376                 chop;
1377                 s/#.*$//;
1378                 next if /^\s*$/;
1379                 @a=split;
1380                 if (defined $ret{$a[0]}) {
1381                         # This is actually perfectly OK
1382                         #print STDERR "Warning: Symbol '",$a[0],"' redefined. old=",$ret{$a[0]},", new=",$a[1],"\n";
1383                 }
1384                 if ($max_num > $a[1]) {
1385                         print STDERR "Warning: Number decreased from ",$max_num," to ",$a[1],"\n";
1386                 }
1387                 elsif ($max_num == $a[1]) {
1388                         # This is actually perfectly OK
1389                         #print STDERR "Warning: Symbol ",$a[0]," has same number as previous ",$prev,": ",$a[1],"\n";
1390                         if ($a[0] eq $prev) {
1391                                 $prev_cnt++;
1392                                 $a[0] .= "{$prev_cnt}";
1393                         }
1394                 }
1395                 else {
1396                         $prev_cnt = 0;
1397                 }
1398                 if ($#a < 2) {
1399                         # Existence will be proven later, in do_defs
1400                         $ret{$a[0]}=$a[1];
1401                         $num_noinfo++;
1402                 } else {
1403                         $ret{$a[0]}=$a[1]."\\".$a[2]; # \\ is a special marker
1404                 }
1405                 $max_num = $a[1] if $a[1] > $max_num;
1406                 $prev=$a[0];
1407         }
1408         if ($num_noinfo) {
1409                 print STDERR "Warning: $num_noinfo symbols were without info.";
1410                 if ($do_rewrite) {
1411                         printf STDERR "  The rewrite will fix this.\n";
1412                 } else {
1413                         printf STDERR "  You should do a rewrite to fix this.\n";
1414                 }
1415         }
1416         close(IN);
1417         return(%ret);
1418 }
1419
1420 sub parse_number
1421 {
1422         (my $str, my $what) = @_;
1423         (my $n, my $i) = split(/\\/,$str);
1424         if ($what eq "n") {
1425                 return $n;
1426         } else {
1427                 return $i;
1428         }
1429 }
1430
1431 sub rewrite_numbers
1432 {
1433         (*OUT,$name,*nums,@symbols)=@_;
1434         my $thing;
1435
1436         print STDERR "Rewriting $name\n";
1437
1438         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1439         my $r; my %r; my %rsyms;
1440         foreach $r (@r) {
1441                 (my $s, my $i) = split /\\/, $r;
1442                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1443                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1444                 $r{$a} = $s."\\".$i;
1445                 $rsyms{$s} = 1;
1446         }
1447
1448         my %syms = ();
1449         foreach $_ (@symbols) {
1450                 (my $n, my $i) = split /\\/;
1451                 $syms{$n} = 1;
1452         }
1453
1454         my @s=sort {
1455             &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n")
1456             || $a cmp $b
1457         } keys %nums;
1458         foreach $sym (@s) {
1459                 (my $n, my $i) = split /\\/, $nums{$sym};
1460                 next if defined($i) && $i =~ /^.*?:.*?:\w+\(\w+\)/;
1461                 next if defined($rsyms{$sym});
1462                 print STDERR "DEBUG: rewrite_numbers for sym = ",$sym,": i = ",$i,", n = ",$n,", rsym{sym} = ",$rsyms{$sym},"syms{sym} = ",$syms{$sym},"\n" if $debug;
1463                 $i="NOEXIST::FUNCTION:"
1464                         if !defined($i) || $i eq "" || !defined($syms{$sym});
1465                 my $s2 = $sym;
1466                 $s2 =~ s/\{[0-9]+\}$//;
1467                 printf OUT "%s%-39s %d\t%s\n","",$s2,$n,$i;
1468                 if (exists $r{$sym}) {
1469                         (my $s, $i) = split /\\/,$r{$sym};
1470                         my $s2 = $s;
1471                         $s2 =~ s/\{[0-9]+\}$//;
1472                         printf OUT "%s%-39s %d\t%s\n","",$s2,$n,$i;
1473                 }
1474         }
1475 }
1476
1477 sub update_numbers
1478 {
1479         (*OUT,$name,*nums,my $start_num, my @symbols)=@_;
1480         my $new_syms = 0;
1481
1482         print STDERR "Updating $name numbers\n";
1483
1484         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1485         my $r; my %r; my %rsyms;
1486         foreach $r (@r) {
1487                 (my $s, my $i) = split /\\/, $r;
1488                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1489                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1490                 $r{$a} = $s."\\".$i;
1491                 $rsyms{$s} = 1;
1492         }
1493
1494         foreach $sym (@symbols) {
1495                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1496                 next if $i =~ /^.*?:.*?:\w+\(\w+\)/;
1497                 next if defined($rsyms{$sym});
1498                 die "ERROR: Symbol $sym had no info attached to it."
1499                     if $i eq "";
1500                 next if $i =~ /OPENSSL_FIPSCAPABLE/;
1501                 if (!exists $nums{$s}) {
1502                         $new_syms++;
1503                         my $s2 = $s;
1504                         $s2 =~ s/\{[0-9]+\}$//;
1505                         printf OUT "%s%-39s %d\t%s\n","",$s2, ++$start_num,$i;
1506                         if (exists $r{$s}) {
1507                                 ($s, $i) = split /\\/,$r{$s};
1508                                 $s =~ s/\{[0-9]+\}$//;
1509                                 printf OUT "%s%-39s %d\t%s\n","",$s, $start_num,$i;
1510                         }
1511                 }
1512         }
1513         if($new_syms) {
1514                 print STDERR "$new_syms New symbols added\n";
1515         } else {
1516                 print STDERR "No New symbols Added\n";
1517         }
1518 }
1519
1520 sub check_existing
1521 {
1522         (*nums, my @symbols)=@_;
1523         my %existing; my @remaining;
1524         @remaining=();
1525         foreach $sym (@symbols) {
1526                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1527                 $existing{$s}=1;
1528         }
1529         foreach $sym (keys %nums) {
1530                 if (!exists $existing{$sym}) {
1531                         push @remaining, $sym;
1532                 }
1533         }
1534         if(@remaining) {
1535                 print STDERR "The following symbols do not seem to exist:\n";
1536                 foreach $sym (@remaining) {
1537                         print STDERR "\t",$sym,"\n";
1538                 }
1539         }
1540 }
1541
1542 sub count_parens
1543 {
1544         my $line = shift(@_);
1545
1546         my $open = $line =~ tr/\(//;
1547         my $close = $line =~ tr/\)//;
1548
1549         return $open - $close;
1550 }
1551