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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 $W16=0;
76 my $NT=0;
77 my $OS2=0;
78 # Set this to make typesafe STACK definitions appear in DEF
79 my $safe_stack_def = 0;
80
81 my @known_platforms = ( "__FreeBSD__", "PERL5", "NeXT",
82                         "EXPORT_VAR_AS_FUNCTION", "ZLIB", "OPENSSL_FIPS" );
83 my @known_ossl_platforms = ( "VMS", "WIN16", "WIN32", "WINNT", "OS2" );
84 my @known_algorithms = ( "RC2", "RC4", "RC5", "IDEA", "DES", "BF",
85                          "CAST", "MD2", "MD4", "MD5", "SHA", "SHA0", "SHA1",
86                          "SHA256", "SHA512", "RIPEMD",
87                          "MDC2", "WHIRLPOOL", "RSA", "DSA", "DH", "EC", "ECDH", "ECDSA", "EC2M",
88                          "HMAC", "AES", "CAMELLIA", "SEED", "GOST",
89                          # EC_NISTP_64_GCC_128
90                          "EC_NISTP_64_GCC_128",
91                          # Envelope "algorithms"
92                          "EVP", "X509", "ASN1_TYPEDEFS",
93                          # Helper "algorithms"
94                          "BIO", "COMP", "BUFFER", "LHASH", "STACK", "ERR",
95                          "LOCKING",
96                          # External "algorithms"
97                          "FP_API", "STDIO", "SOCK", "KRB5", "DGRAM",
98                          # Engines
99                          "STATIC_ENGINE", "ENGINE", "HW", "GMP",
100                          # RFC3779
101                          "RFC3779",
102                          # TLS
103                          "TLSEXT", "PSK", "SRP", "HEARTBEATS",
104                          # CMS
105                          "CMS",
106                          # CryptoAPI Engine
107                          "CAPIENG",
108                          # SSL v2
109                          "SSL2",
110                          # SSL v2 method
111                          "SSL2_METHOD",
112                          # SSL v3 method
113                          "SSL3_METHOD",
114                          # JPAKE
115                          "JPAKE",
116                          # NEXTPROTONEG
117                          "NEXTPROTONEG",
118                          # Deprecated functions
119                          "DEPRECATED",
120                          # Hide SSL internals
121                          "SSL_INTERN",
122                          # SCTP
123                          "SCTP",
124                          # SRTP
125                          "SRTP",
126                          # Unit testing
127                          "UNIT_TEST");
128
129 my $options="";
130 open(IN,"<Makefile") || die "unable to open Makefile!\n";
131 while(<IN>) {
132     $options=$1 if (/^OPTIONS=(.*)$/);
133 }
134 close(IN);
135
136 # The following ciphers may be excluded (by Configure). This means functions
137 # defined with ifndef(NO_XXX) are not included in the .def file, and everything
138 # in directory xxx is ignored.
139 my $no_rc2; my $no_rc4; my $no_rc5; my $no_idea; my $no_des; my $no_bf;
140 my $no_cast; my $no_whirlpool; my $no_camellia; my $no_seed;
141 my $no_md2; my $no_md4; my $no_md5; my $no_sha; my $no_ripemd; my $no_mdc2;
142 my $no_rsa; my $no_dsa; my $no_dh; my $no_hmac=0; my $no_aes; my $no_krb5;
143 my $no_ec; my $no_ecdsa; my $no_ecdh; my $no_engine; my $no_hw;
144 my $no_fp_api; my $no_static_engine=1; my $no_gmp; my $no_deprecated;
145 my $no_rfc3779; my $no_psk; my $no_tlsext; my $no_cms; my $no_capieng;
146 my $no_jpake; my $no_srp; my $no_ssl2; my $no_ec2m; my $no_nistp_gcc; 
147 my $no_nextprotoneg; my $no_sctp; my $no_srtp;
148 my $no_unit_test; my $no_ssl3_method; my $no_ssl2_method;
149
150 my $fips;
151
152 my $zlib;
153
154
155 foreach (@ARGV, split(/ /, $options))
156         {
157         $debug=1 if $_ eq "debug";
158         $W32=1 if $_ eq "32";
159         $W16=1 if $_ eq "16";
160         if($_ eq "NT") {
161                 $W32 = 1;
162                 $NT = 1;
163         }
164         if ($_ eq "VMS-VAX") {
165                 $VMS=1;
166                 $VMSVAX=1;
167         }
168         if ($_ eq "VMS-NonVAX") {
169                 $VMS=1;
170                 $VMSNonVAX=1;
171         }
172         $VMS=1 if $_ eq "VMS";
173         $OS2=1 if $_ eq "OS2";
174         $fips=1 if /^fips/;
175         if ($_ eq "zlib" || $_ eq "enable-zlib" || $_ eq "zlib-dynamic"
176                          || $_ eq "enable-zlib-dynamic") {
177                 $zlib = 1;
178         }
179
180         $do_ssl=1 if $_ eq "ssleay";
181         if ($_ eq "ssl") {
182                 $do_ssl=1; 
183                 $libname=$_
184         }
185         $do_crypto=1 if $_ eq "libeay";
186         if ($_ eq "crypto") {
187                 $do_crypto=1;
188                 $libname=$_;
189         }
190         $no_static_engine=1 if $_ eq "no-static-engine";
191         $no_static_engine=0 if $_ eq "enable-static-engine";
192         $do_update=1 if $_ eq "update";
193         $do_rewrite=1 if $_ eq "rewrite";
194         $do_ctest=1 if $_ eq "ctest";
195         $do_ctestall=1 if $_ eq "ctestall";
196         $do_checkexist=1 if $_ eq "exist";
197         #$safe_stack_def=1 if $_ eq "-DDEBUG_SAFESTACK";
198
199         if    (/^no-rc2$/)      { $no_rc2=1; }
200         elsif (/^no-rc4$/)      { $no_rc4=1; }
201         elsif (/^no-rc5$/)      { $no_rc5=1; }
202         elsif (/^no-idea$/)     { $no_idea=1; }
203         elsif (/^no-des$/)      { $no_des=1; $no_mdc2=1; }
204         elsif (/^no-bf$/)       { $no_bf=1; }
205         elsif (/^no-cast$/)     { $no_cast=1; }
206         elsif (/^no-whirlpool$/)     { $no_whirlpool=1; }
207         elsif (/^no-md2$/)      { $no_md2=1; }
208         elsif (/^no-md4$/)      { $no_md4=1; }
209         elsif (/^no-md5$/)      { $no_md5=1; }
210         elsif (/^no-sha$/)      { $no_sha=1; }
211         elsif (/^no-ripemd$/)   { $no_ripemd=1; }
212         elsif (/^no-mdc2$/)     { $no_mdc2=1; }
213         elsif (/^no-rsa$/)      { $no_rsa=1; }
214         elsif (/^no-dsa$/)      { $no_dsa=1; }
215         elsif (/^no-dh$/)       { $no_dh=1; }
216         elsif (/^no-ec$/)       { $no_ec=1; }
217         elsif (/^no-ecdsa$/)    { $no_ecdsa=1; }
218         elsif (/^no-ecdh$/)     { $no_ecdh=1; }
219         elsif (/^no-hmac$/)     { $no_hmac=1; }
220         elsif (/^no-aes$/)      { $no_aes=1; }
221         elsif (/^no-camellia$/) { $no_camellia=1; }
222         elsif (/^no-seed$/)     { $no_seed=1; }
223         elsif (/^no-evp$/)      { $no_evp=1; }
224         elsif (/^no-lhash$/)    { $no_lhash=1; }
225         elsif (/^no-stack$/)    { $no_stack=1; }
226         elsif (/^no-err$/)      { $no_err=1; }
227         elsif (/^no-buffer$/)   { $no_buffer=1; }
228         elsif (/^no-bio$/)      { $no_bio=1; }
229         #elsif (/^no-locking$/) { $no_locking=1; }
230         elsif (/^no-comp$/)     { $no_comp=1; }
231         elsif (/^no-dso$/)      { $no_dso=1; }
232         elsif (/^no-krb5$/)     { $no_krb5=1; }
233         elsif (/^no-engine$/)   { $no_engine=1; }
234         elsif (/^no-hw$/)       { $no_hw=1; }
235         elsif (/^no-gmp$/)      { $no_gmp=1; }
236         elsif (/^no-rfc3779$/)  { $no_rfc3779=1; }
237         elsif (/^no-tlsext$/)   { $no_tlsext=1; }
238         elsif (/^no-cms$/)      { $no_cms=1; }
239         elsif (/^no-ec2m$/)     { $no_ec2m=1; }
240         elsif (/^no-ec_nistp_64_gcc_128$/)      { $no_nistp_gcc=1; }
241         elsif (/^no-nextprotoneg$/)     { $no_nextprotoneg=1; }
242         elsif (/^no-ssl2$/)     { $no_ssl2=1; }
243         elsif (/^no-ssl2-method$/) { $no_ssl2_method=1; }
244         elsif (/^no-ssl3-method$/) { $no_ssl3_method=1; }
245         elsif (/^no-capieng$/)  { $no_capieng=1; }
246         elsif (/^no-jpake$/)    { $no_jpake=1; }
247         elsif (/^no-srp$/)      { $no_srp=1; }
248         elsif (/^no-sctp$/)     { $no_sctp=1; }
249         elsif (/^no-srtp$/)     { $no_srtp=1; }
250         elsif (/^no-unit-test$/){ $no_unit_test=1; }
251         }
252
253
254 if (!$libname) { 
255         if ($do_ssl) {
256                 $libname="SSLEAY";
257         }
258         if ($do_crypto) {
259                 $libname="LIBEAY";
260         }
261 }
262
263 # If no platform is given, assume WIN32
264 if ($W32 + $W16 + $VMS + $OS2 == 0) {
265         $W32 = 1;
266 }
267
268 # Add extra knowledge
269 if ($W16) {
270         $no_fp_api=1;
271 }
272
273 if (!$do_ssl && !$do_crypto)
274         {
275         print STDERR "usage: $0 ( ssl | crypto ) [ 16 | 32 | NT | OS2 ]\n";
276         exit(1);
277         }
278
279 %ssl_list=&load_numbers($ssl_num);
280 $max_ssl = $max_num;
281 %crypto_list=&load_numbers($crypto_num);
282 $max_crypto = $max_num;
283
284 my $ssl="ssl/ssl.h";
285 $ssl.=" ssl/kssl.h";
286 $ssl.=" ssl/tls1.h";
287 $ssl.=" ssl/srtp.h";
288
289 my $crypto ="crypto/crypto.h";
290 $crypto.=" crypto/cryptlib.h";
291 $crypto.=" crypto/o_dir.h";
292 $crypto.=" crypto/o_str.h";
293 $crypto.=" crypto/o_time.h";
294 $crypto.=" crypto/des/des.h crypto/des/des_old.h" ; # unless $no_des;
295 $crypto.=" crypto/idea/idea.h" ; # unless $no_idea;
296 $crypto.=" crypto/rc4/rc4.h" ; # unless $no_rc4;
297 $crypto.=" crypto/rc5/rc5.h" ; # unless $no_rc5;
298 $crypto.=" crypto/rc2/rc2.h" ; # unless $no_rc2;
299 $crypto.=" crypto/bf/blowfish.h" ; # unless $no_bf;
300 $crypto.=" crypto/cast/cast.h" ; # unless $no_cast;
301 $crypto.=" crypto/whrlpool/whrlpool.h" ;
302 $crypto.=" crypto/md2/md2.h" ; # unless $no_md2;
303 $crypto.=" crypto/md4/md4.h" ; # unless $no_md4;
304 $crypto.=" crypto/md5/md5.h" ; # unless $no_md5;
305 $crypto.=" crypto/mdc2/mdc2.h" ; # unless $no_mdc2;
306 $crypto.=" crypto/sha/sha.h" ; # unless $no_sha;
307 $crypto.=" crypto/ripemd/ripemd.h" ; # unless $no_ripemd;
308 $crypto.=" crypto/aes/aes.h" ; # unless $no_aes;
309 $crypto.=" crypto/camellia/camellia.h" ; # unless $no_camellia;
310 $crypto.=" crypto/seed/seed.h"; # unless $no_seed;
311
312 $crypto.=" crypto/bn/bn.h";
313 $crypto.=" crypto/rsa/rsa.h" ; # unless $no_rsa;
314 $crypto.=" crypto/dsa/dsa.h" ; # unless $no_dsa;
315 $crypto.=" crypto/dh/dh.h" ; # unless $no_dh;
316 $crypto.=" crypto/ec/ec.h" ; # unless $no_ec;
317 $crypto.=" crypto/ecdsa/ecdsa.h" ; # unless $no_ecdsa;
318 $crypto.=" crypto/ecdh/ecdh.h" ; # unless $no_ecdh;
319 $crypto.=" crypto/hmac/hmac.h" ; # unless $no_hmac;
320 $crypto.=" crypto/cmac/cmac.h" ; # unless $no_hmac;
321
322 $crypto.=" crypto/engine/engine.h"; # unless $no_engine;
323 $crypto.=" crypto/stack/stack.h" ; # unless $no_stack;
324 $crypto.=" crypto/buffer/buffer.h" ; # unless $no_buffer;
325 $crypto.=" crypto/bio/bio.h" ; # unless $no_bio;
326 $crypto.=" crypto/dso/dso.h" ; # unless $no_dso;
327 $crypto.=" crypto/lhash/lhash.h" ; # unless $no_lhash;
328 $crypto.=" crypto/conf/conf.h";
329 $crypto.=" crypto/txt_db/txt_db.h";
330
331 $crypto.=" crypto/evp/evp.h" ; # unless $no_evp;
332 $crypto.=" crypto/objects/objects.h";
333 $crypto.=" crypto/pem/pem.h";
334 #$crypto.=" crypto/meth/meth.h";
335 $crypto.=" crypto/asn1/asn1.h";
336 $crypto.=" crypto/asn1/asn1t.h";
337 $crypto.=" crypto/asn1/asn1_mac.h";
338 $crypto.=" crypto/err/err.h" ; # unless $no_err;
339 $crypto.=" crypto/pkcs7/pkcs7.h";
340 $crypto.=" crypto/pkcs12/pkcs12.h";
341 $crypto.=" crypto/x509/x509.h";
342 $crypto.=" crypto/x509/x509_vfy.h";
343 $crypto.=" crypto/x509v3/x509v3.h";
344 $crypto.=" crypto/ts/ts.h";
345 $crypto.=" crypto/rand/rand.h";
346 $crypto.=" crypto/comp/comp.h" ; # unless $no_comp;
347 $crypto.=" crypto/ocsp/ocsp.h";
348 $crypto.=" crypto/ui/ui.h crypto/ui/ui_compat.h";
349 $crypto.=" crypto/krb5/krb5_asn.h";
350 #$crypto.=" crypto/store/store.h";
351 $crypto.=" crypto/pqueue/pqueue.h";
352 $crypto.=" crypto/cms/cms.h";
353 $crypto.=" crypto/jpake/jpake.h";
354 $crypto.=" crypto/modes/modes.h";
355 $crypto.=" crypto/srp/srp.h";
356
357 my $symhacks="crypto/symhacks.h";
358
359 my @ssl_symbols = &do_defs("SSLEAY", $ssl, $symhacks);
360 my @crypto_symbols = &do_defs("LIBEAY", $crypto, $symhacks);
361
362 if ($do_update) {
363
364 if ($do_ssl == 1) {
365
366         &maybe_add_info("SSLEAY",*ssl_list,@ssl_symbols);
367         if ($do_rewrite == 1) {
368                 open(OUT, ">$ssl_num");
369                 &rewrite_numbers(*OUT,"SSLEAY",*ssl_list,@ssl_symbols);
370         } else {
371                 open(OUT, ">>$ssl_num");
372         }
373         &update_numbers(*OUT,"SSLEAY",*ssl_list,$max_ssl,@ssl_symbols);
374         close OUT;
375 }
376
377 if($do_crypto == 1) {
378
379         &maybe_add_info("LIBEAY",*crypto_list,@crypto_symbols);
380         if ($do_rewrite == 1) {
381                 open(OUT, ">$crypto_num");
382                 &rewrite_numbers(*OUT,"LIBEAY",*crypto_list,@crypto_symbols);
383         } else {
384                 open(OUT, ">>$crypto_num");
385         }
386         &update_numbers(*OUT,"LIBEAY",*crypto_list,$max_crypto,@crypto_symbols);
387         close OUT;
388
389
390 } elsif ($do_checkexist) {
391         &check_existing(*ssl_list, @ssl_symbols)
392                 if $do_ssl == 1;
393         &check_existing(*crypto_list, @crypto_symbols)
394                 if $do_crypto == 1;
395 } elsif ($do_ctest || $do_ctestall) {
396
397         print <<"EOF";
398
399 /* Test file to check all DEF file symbols are present by trying
400  * to link to all of them. This is *not* intended to be run!
401  */
402
403 int main()
404 {
405 EOF
406         &print_test_file(*STDOUT,"SSLEAY",*ssl_list,$do_ctestall,@ssl_symbols)
407                 if $do_ssl == 1;
408
409         &print_test_file(*STDOUT,"LIBEAY",*crypto_list,$do_ctestall,@crypto_symbols)
410                 if $do_crypto == 1;
411
412         print "}\n";
413
414 } else {
415
416         &print_def_file(*STDOUT,$libname,*ssl_list,@ssl_symbols)
417                 if $do_ssl == 1;
418
419         &print_def_file(*STDOUT,$libname,*crypto_list,@crypto_symbols)
420                 if $do_crypto == 1;
421
422 }
423
424
425 sub do_defs
426 {
427         my($name,$files,$symhacksfile)=@_;
428         my $file;
429         my @ret;
430         my %syms;
431         my %platform;           # For anything undefined, we assume ""
432         my %kind;               # For anything undefined, we assume "FUNCTION"
433         my %algorithm;          # For anything undefined, we assume ""
434         my %variant;
435         my %variant_cnt;        # To be able to allocate "name{n}" if "name"
436                                 # is the same name as the original.
437         my $cpp;
438         my %unknown_algorithms = ();
439
440         foreach $file (split(/\s+/,$symhacksfile." ".$files))
441                 {
442                 print STDERR "DEBUG: starting on $file:\n" if $debug;
443                 open(IN,"<$file") || die "unable to open $file:$!\n";
444                 my $line = "", my $def= "";
445                 my %tag = (
446                         (map { $_ => 0 } @known_platforms),
447                         (map { "OPENSSL_SYS_".$_ => 0 } @known_ossl_platforms),
448                         (map { "OPENSSL_NO_".$_ => 0 } @known_algorithms),
449                         NOPROTO         => 0,
450                         PERL5           => 0,
451                         _WINDLL         => 0,
452                         CONST_STRICT    => 0,
453                         TRUE            => 1,
454                 );
455                 my $symhacking = $file eq $symhacksfile;
456                 my @current_platforms = ();
457                 my @current_algorithms = ();
458
459                 # params: symbol, alias, platforms, kind
460                 # The reason to put this subroutine in a variable is that
461                 # it will otherwise create it's own, unshared, version of
462                 # %tag and %variant...
463                 my $make_variant = sub
464                 {
465                         my ($s, $a, $p, $k) = @_;
466                         my ($a1, $a2);
467
468                         print STDERR "DEBUG: make_variant: Entered with ",$s,", ",$a,", ",(defined($p)?$p:""),", ",(defined($k)?$k:""),"\n" if $debug;
469                         if (defined($p))
470                         {
471                                 $a1 = join(",",$p,
472                                            grep(!/^$/,
473                                                 map { $tag{$_} == 1 ? $_ : "" }
474                                                 @known_platforms));
475                         }
476                         else
477                         {
478                                 $a1 = join(",",
479                                            grep(!/^$/,
480                                                 map { $tag{$_} == 1 ? $_ : "" }
481                                                 @known_platforms));
482                         }
483                         $a2 = join(",",
484                                    grep(!/^$/,
485                                         map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ : "" }
486                                         @known_ossl_platforms));
487                         print STDERR "DEBUG: make_variant: a1 = $a1; a2 = $a2\n" if $debug;
488                         if ($a1 eq "") { $a1 = $a2; }
489                         elsif ($a1 ne "" && $a2 ne "") { $a1 .= ",".$a2; }
490                         if ($a eq $s)
491                         {
492                                 if (!defined($variant_cnt{$s}))
493                                 {
494                                         $variant_cnt{$s} = 0;
495                                 }
496                                 $variant_cnt{$s}++;
497                                 $a .= "{$variant_cnt{$s}}";
498                         }
499                         my $toadd = $a.":".$a1.(defined($k)?":".$k:"");
500                         my $togrep = $s.'(\{[0-9]+\})?:'.$a1.(defined($k)?":".$k:"");
501                         if (!grep(/^$togrep$/,
502                                   split(/;/, defined($variant{$s})?$variant{$s}:""))) {
503                                 if (defined($variant{$s})) { $variant{$s} .= ";"; }
504                                 $variant{$s} .= $toadd;
505                         }
506                         print STDERR "DEBUG: make_variant: Exit with variant of ",$s," = ",$variant{$s},"\n" if $debug;
507                 };
508
509                 print STDERR "DEBUG: parsing ----------\n" if $debug;
510                 while(<IN>) {
511                         if (/\/\* Error codes for the \w+ functions\. \*\//)
512                                 {
513                                 undef @tag;
514                                 last;
515                                 }
516                         if ($line ne '') {
517                                 $_ = $line . $_;
518                                 $line = '';
519                         }
520
521                         if (/\\$/) {
522                                 chomp; # remove eol
523                                 chop; # remove ending backslash
524                                 $line = $_;
525                                 next;
526                         }
527
528                         if(/\/\*/) {
529                                 if (not /\*\//) {       # multiline comment...
530                                         $line = $_;     # ... just accumulate
531                                         next;
532                                 } else {
533                                         s/\/\*.*?\*\///gs;# wipe it
534                                 }
535                         }
536
537                         if ($cpp) {
538                                 $cpp++ if /^#\s*if/;
539                                 $cpp-- if /^#\s*endif/;
540                                 next;
541                         }
542                         $cpp = 1 if /^#.*ifdef.*cplusplus/;
543
544                         s/{[^{}]*}//gs;                      # ignore {} blocks
545                         print STDERR "DEBUG: \$def=\"$def\"\n" if $debug && $def ne "";
546                         print STDERR "DEBUG: \$_=\"$_\"\n" if $debug;
547                         if (/^\#\s*ifndef\s+(.*)/) {
548                                 push(@tag,"-");
549                                 push(@tag,$1);
550                                 $tag{$1}=-1;
551                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
552                         } elsif (/^\#\s*if\s+!defined\(([^\)]+)\)/) {
553                                 push(@tag,"-");
554                                 if (/^\#\s*if\s+(!defined\(([^\)]+)\)(\s+\&\&\s+!defined\(([^\)]+)\))*)$/) {
555                                         my $tmp_1 = $1;
556                                         my $tmp_;
557                                         foreach $tmp_ (split '\&\&',$tmp_1) {
558                                                 $tmp_ =~ /!defined\(([^\)]+)\)/;
559                                                 print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
560                                                 push(@tag,$1);
561                                                 $tag{$1}=-1;
562                                         }
563                                 } else {
564                                         print STDERR "Warning: $file: complicated expression: $_" if $debug; # because it is O...
565                                         print STDERR "DEBUG: $file: found tag $1 = -1\n" if $debug;
566                                         push(@tag,$1);
567                                         $tag{$1}=-1;
568                                 }
569                         } elsif (/^\#\s*ifdef\s+(\S*)/) {
570                                 push(@tag,"-");
571                                 push(@tag,$1);
572                                 $tag{$1}=1;
573                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
574                         } elsif (/^\#\s*if\s+defined\(([^\)]+)\)/) {
575                                 push(@tag,"-");
576                                 if (/^\#\s*if\s+(defined\(([^\)]+)\)(\s+\|\|\s+defined\(([^\)]+)\))*)$/) {
577                                         my $tmp_1 = $1;
578                                         my $tmp_;
579                                         foreach $tmp_ (split '\|\|',$tmp_1) {
580                                                 $tmp_ =~ /defined\(([^\)]+)\)/;
581                                                 print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
582                                                 push(@tag,$1);
583                                                 $tag{$1}=1;
584                                         }
585                                 } else {
586                                         print STDERR "Warning: $file: complicated expression: $_\n" if $debug; # because it is O...
587                                         print STDERR "DEBUG: $file: found tag $1 = 1\n" if $debug;
588                                         push(@tag,$1);
589                                         $tag{$1}=1;
590                                 }
591                         } elsif (/^\#\s*error\s+(\w+) is disabled\./) {
592                                 my $tag_i = $#tag;
593                                 while($tag[$tag_i] ne "-") {
594                                         if ($tag[$tag_i] eq "OPENSSL_NO_".$1) {
595                                                 $tag{$tag[$tag_i]}=2;
596                                                 print STDERR "DEBUG: $file: chaged tag $1 = 2\n" if $debug;
597                                         }
598                                         $tag_i--;
599                                 }
600                         } elsif (/^\#\s*endif/) {
601                                 my $tag_i = $#tag;
602                                 while($tag_i > 0 && $tag[$tag_i] ne "-") {
603                                         my $t=$tag[$tag_i];
604                                         print STDERR "DEBUG: \$t=\"$t\"\n" if $debug;
605                                         if ($tag{$t}==2) {
606                                                 $tag{$t}=-1;
607                                         } else {
608                                                 $tag{$t}=0;
609                                         }
610                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
611                                         pop(@tag);
612                                         if ($t =~ /^OPENSSL_NO_([A-Z0-9_]+)$/) {
613                                                 $t=$1;
614                                         } else {
615                                                 $t="";
616                                         }
617                                         if ($t ne ""
618                                             && !grep(/^$t$/, @known_algorithms)) {
619                                                 $unknown_algorithms{$t} = 1;
620                                                 #print STDERR "DEBUG: Added as unknown algorithm: $t\n" if $debug;
621                                         }
622                                         $tag_i--;
623                                 }
624                                 pop(@tag);
625                         } elsif (/^\#\s*else/) {
626                                 my $tag_i = $#tag;
627                                 while($tag[$tag_i] ne "-") {
628                                         my $t=$tag[$tag_i];
629                                         $tag{$t}= -$tag{$t};
630                                         print STDERR "DEBUG: $file: changed tag ",$t," = ",$tag{$t},"\n" if $debug;
631                                         $tag_i--;
632                                 }
633                         } elsif (/^\#\s*if\s+1/) {
634                                 push(@tag,"-");
635                                 # Dummy tag
636                                 push(@tag,"TRUE");
637                                 $tag{"TRUE"}=1;
638                                 print STDERR "DEBUG: $file: found 1\n" if $debug;
639                         } elsif (/^\#\s*if\s+0/) {
640                                 push(@tag,"-");
641                                 # Dummy tag
642                                 push(@tag,"TRUE");
643                                 $tag{"TRUE"}=-1;
644                                 print STDERR "DEBUG: $file: found 0\n" if $debug;
645                         } elsif (/^\#\s*define\s+(\w+)\s+(\w+)/
646                                  && $symhacking && $tag{'TRUE'} != -1) {
647                                 # This is for aliasing.  When we find an alias,
648                                 # we have to invert
649                                 &$make_variant($1,$2);
650                                 print STDERR "DEBUG: $file: defined $1 = $2\n" if $debug;
651                         }
652                         if (/^\#/) {
653                                 @current_platforms =
654                                     grep(!/^$/,
655                                          map { $tag{$_} == 1 ? $_ :
656                                                    $tag{$_} == -1 ? "!".$_  : "" }
657                                          @known_platforms);
658                                 push @current_platforms
659                                     , grep(!/^$/,
660                                            map { $tag{"OPENSSL_SYS_".$_} == 1 ? $_ :
661                                                      $tag{"OPENSSL_SYS_".$_} == -1 ? "!".$_  : "" }
662                                            @known_ossl_platforms);
663                                 @current_algorithms =
664                                     grep(!/^$/,
665                                          map { $tag{"OPENSSL_NO_".$_} == -1 ? $_ : "" }
666                                          @known_algorithms);
667                                 $def .=
668                                     "#INFO:"
669                                         .join(',',@current_platforms).":"
670                                             .join(',',@current_algorithms).";";
671                                 next;
672                         }
673                         if ($tag{'TRUE'} != -1) {
674                                 if (/^\s*DECLARE_STACK_OF\s*\(\s*(\w*)\s*\)/) {
675                                         next;
676                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
677                                         $def .= "int d2i_$3(void);";
678                                         $def .= "int i2d_$3(void);";
679                                         # Variant for platforms that do not
680                                         # have to access globale variables
681                                         # in shared libraries through functions
682                                         $def .=
683                                             "#INFO:"
684                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
685                                                     .join(',',@current_algorithms).";";
686                                         $def .= "OPENSSL_EXTERN int $2_it;";
687                                         $def .=
688                                             "#INFO:"
689                                                 .join(',',@current_platforms).":"
690                                                     .join(',',@current_algorithms).";";
691                                         # Variant for platforms that have to
692                                         # access globale variables in shared
693                                         # libraries through functions
694                                         &$make_variant("$2_it","$2_it",
695                                                       "EXPORT_VAR_AS_FUNCTION",
696                                                       "FUNCTION");
697                                         next;
698                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_fname\s*\(\s*(\w*)\s*,\s*(\w*)\s*,\s*(\w*)\s*\)/) {
699                                         $def .= "int d2i_$3(void);";
700                                         $def .= "int i2d_$3(void);";
701                                         $def .= "int $3_free(void);";
702                                         $def .= "int $3_new(void);";
703                                         # Variant for platforms that do not
704                                         # have to access globale variables
705                                         # in shared libraries through functions
706                                         $def .=
707                                             "#INFO:"
708                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
709                                                     .join(',',@current_algorithms).";";
710                                         $def .= "OPENSSL_EXTERN int $2_it;";
711                                         $def .=
712                                             "#INFO:"
713                                                 .join(',',@current_platforms).":"
714                                                     .join(',',@current_algorithms).";";
715                                         # Variant for platforms that have to
716                                         # access globale variables in shared
717                                         # libraries through functions
718                                         &$make_variant("$2_it","$2_it",
719                                                       "EXPORT_VAR_AS_FUNCTION",
720                                                       "FUNCTION");
721                                         next;
722                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS\s*\(\s*(\w*)\s*\)/ ||
723                                          /^\s*DECLARE_ASN1_FUNCTIONS_const\s*\(\s*(\w*)\s*\)/) {
724                                         $def .= "int d2i_$1(void);";
725                                         $def .= "int i2d_$1(void);";
726                                         $def .= "int $1_free(void);";
727                                         $def .= "int $1_new(void);";
728                                         # Variant for platforms that do not
729                                         # have to access globale variables
730                                         # in shared libraries through functions
731                                         $def .=
732                                             "#INFO:"
733                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
734                                                     .join(',',@current_algorithms).";";
735                                         $def .= "OPENSSL_EXTERN int $1_it;";
736                                         $def .=
737                                             "#INFO:"
738                                                 .join(',',@current_platforms).":"
739                                                     .join(',',@current_algorithms).";";
740                                         # Variant for platforms that have to
741                                         # access globale variables in shared
742                                         # libraries through functions
743                                         &$make_variant("$1_it","$1_it",
744                                                       "EXPORT_VAR_AS_FUNCTION",
745                                                       "FUNCTION");
746                                         next;
747                                 } elsif (/^\s*DECLARE_ASN1_ENCODE_FUNCTIONS_const\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
748                                         $def .= "int d2i_$2(void);";
749                                         $def .= "int i2d_$2(void);";
750                                         # Variant for platforms that do not
751                                         # have to access globale variables
752                                         # in shared libraries through functions
753                                         $def .=
754                                             "#INFO:"
755                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
756                                                     .join(',',@current_algorithms).";";
757                                         $def .= "OPENSSL_EXTERN int $2_it;";
758                                         $def .=
759                                             "#INFO:"
760                                                 .join(',',@current_platforms).":"
761                                                     .join(',',@current_algorithms).";";
762                                         # Variant for platforms that have to
763                                         # access globale variables in shared
764                                         # libraries through functions
765                                         &$make_variant("$2_it","$2_it",
766                                                       "EXPORT_VAR_AS_FUNCTION",
767                                                       "FUNCTION");
768                                         next;
769                                 } elsif (/^\s*DECLARE_ASN1_ALLOC_FUNCTIONS\s*\(\s*(\w*)\s*\)/) {
770                                         $def .= "int $1_free(void);";
771                                         $def .= "int $1_new(void);";
772                                         next;
773                                 } elsif (/^\s*DECLARE_ASN1_FUNCTIONS_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
774                                         $def .= "int d2i_$2(void);";
775                                         $def .= "int i2d_$2(void);";
776                                         $def .= "int $2_free(void);";
777                                         $def .= "int $2_new(void);";
778                                         # Variant for platforms that do not
779                                         # have to access globale variables
780                                         # in shared libraries through functions
781                                         $def .=
782                                             "#INFO:"
783                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
784                                                     .join(',',@current_algorithms).";";
785                                         $def .= "OPENSSL_EXTERN int $2_it;";
786                                         $def .=
787                                             "#INFO:"
788                                                 .join(',',@current_platforms).":"
789                                                     .join(',',@current_algorithms).";";
790                                         # Variant for platforms that have to
791                                         # access globale variables in shared
792                                         # libraries through functions
793                                         &$make_variant("$2_it","$2_it",
794                                                       "EXPORT_VAR_AS_FUNCTION",
795                                                       "FUNCTION");
796                                         next;
797                                 } elsif (/^\s*DECLARE_ASN1_ITEM\s*\(\s*(\w*)\s*\)/) {
798                                         # Variant for platforms that do not
799                                         # have to access globale variables
800                                         # in shared libraries through functions
801                                         $def .=
802                                             "#INFO:"
803                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
804                                                     .join(',',@current_algorithms).";";
805                                         $def .= "OPENSSL_EXTERN int $1_it;";
806                                         $def .=
807                                             "#INFO:"
808                                                 .join(',',@current_platforms).":"
809                                                     .join(',',@current_algorithms).";";
810                                         # Variant for platforms that have to
811                                         # access globale variables in shared
812                                         # libraries through functions
813                                         &$make_variant("$1_it","$1_it",
814                                                       "EXPORT_VAR_AS_FUNCTION",
815                                                       "FUNCTION");
816                                         next;
817                                 } elsif (/^\s*DECLARE_ASN1_NDEF_FUNCTION\s*\(\s*(\w*)\s*\)/) {
818                                         $def .= "int i2d_$1_NDEF(void);";
819                                 } elsif (/^\s*DECLARE_ASN1_SET_OF\s*\(\s*(\w*)\s*\)/) {
820                                         next;
821                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION\s*\(\s*(\w*)\s*\)/) {
822                                         $def .= "int $1_print_ctx(void);";
823                                         next;
824                                 } elsif (/^\s*DECLARE_ASN1_PRINT_FUNCTION_name\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
825                                         $def .= "int $2_print_ctx(void);";
826                                         next;
827                                 } elsif (/^\s*DECLARE_PKCS12_STACK_OF\s*\(\s*(\w*)\s*\)/) {
828                                         next;
829                                 } elsif (/^DECLARE_PEM_rw\s*\(\s*(\w*)\s*,/ ||
830                                          /^DECLARE_PEM_rw_cb\s*\(\s*(\w*)\s*,/ ||
831                                          /^DECLARE_PEM_rw_const\s*\(\s*(\w*)\s*,/ ) {
832                                         # Things not in Win16
833                                         $def .=
834                                             "#INFO:"
835                                                 .join(',',"!WIN16",@current_platforms).":"
836                                                     .join(',',@current_algorithms).";";
837                                         $def .= "int PEM_read_$1(void);";
838                                         $def .= "int PEM_write_$1(void);";
839                                         $def .=
840                                             "#INFO:"
841                                                 .join(',',@current_platforms).":"
842                                                     .join(',',@current_algorithms).";";
843                                         # Things that are everywhere
844                                         $def .= "int PEM_read_bio_$1(void);";
845                                         $def .= "int PEM_write_bio_$1(void);";
846                                         next;
847                                 } elsif (/^DECLARE_PEM_write\s*\(\s*(\w*)\s*,/ ||
848                                          /^DECLARE_PEM_write_cb\s*\(\s*(\w*)\s*,/ ) {
849                                         # Things not in Win16
850                                         $def .=
851                                             "#INFO:"
852                                                 .join(',',"!WIN16",@current_platforms).":"
853                                                     .join(',',@current_algorithms).";";
854                                         $def .= "int PEM_write_$1(void);";
855                                         $def .=
856                                             "#INFO:"
857                                                 .join(',',@current_platforms).":"
858                                                     .join(',',@current_algorithms).";";
859                                         # Things that are everywhere
860                                         $def .= "int PEM_write_bio_$1(void);";
861                                         next;
862                                 } elsif (/^DECLARE_PEM_read\s*\(\s*(\w*)\s*,/ ||
863                                          /^DECLARE_PEM_read_cb\s*\(\s*(\w*)\s*,/ ) {
864                                         # Things not in Win16
865                                         $def .=
866                                             "#INFO:"
867                                                 .join(',',"!WIN16",@current_platforms).":"
868                                                     .join(',',@current_algorithms).";";
869                                         $def .= "int PEM_read_$1(void);";
870                                         $def .=
871                                             "#INFO:"
872                                                 .join(',',@current_platforms).":"
873                                                     .join(',',@current_algorithms).";";
874                                         # Things that are everywhere
875                                         $def .= "int PEM_read_bio_$1(void);";
876                                         next;
877                                 } elsif (/^OPENSSL_DECLARE_GLOBAL\s*\(\s*(\w*)\s*,\s*(\w*)\s*\)/) {
878                                         # Variant for platforms that do not
879                                         # have to access globale variables
880                                         # in shared libraries through functions
881                                         $def .=
882                                             "#INFO:"
883                                                 .join(',',"!EXPORT_VAR_AS_FUNCTION",@current_platforms).":"
884                                                     .join(',',@current_algorithms).";";
885                                         $def .= "OPENSSL_EXTERN int _shadow_$2;";
886                                         $def .=
887                                             "#INFO:"
888                                                 .join(',',@current_platforms).":"
889                                                     .join(',',@current_algorithms).";";
890                                         # Variant for platforms that have to
891                                         # access globale variables in shared
892                                         # libraries through functions
893                                         &$make_variant("_shadow_$2","_shadow_$2",
894                                                       "EXPORT_VAR_AS_FUNCTION",
895                                                       "FUNCTION");
896                                 } elsif ($tag{'CONST_STRICT'} != 1) {
897                                         if (/\{|\/\*|\([^\)]*$/) {
898                                                 $line = $_;
899                                         } else {
900                                                 $def .= $_;
901                                         }
902                                 }
903                         }
904                 }
905                 close(IN);
906
907                 my $algs;
908                 my $plays;
909
910                 print STDERR "DEBUG: postprocessing ----------\n" if $debug;
911                 foreach (split /;/, $def) {
912                         my $s; my $k = "FUNCTION"; my $p; my $a;
913                         s/^[\n\s]*//g;
914                         s/[\n\s]*$//g;
915                         next if(/\#undef/);
916                         next if(/typedef\W/);
917                         next if(/\#define/);
918
919                         # Reduce argument lists to empty ()
920                         # fold round brackets recursively: (t(*v)(t),t) -> (t{}{},t) -> {}
921                         while(/\(.*\)/s) {
922                                 s/\([^\(\)]+\)/\{\}/gs;
923                                 s/\(\s*\*\s*(\w+)\s*\{\}\s*\)/$1/gs;    #(*f{}) -> f
924                         }
925                         # pretend as we didn't use curly braces: {} -> ()
926                         s/\{\}/\(\)/gs;
927
928                         s/STACK_OF\(\)/void/gs;
929                         s/LHASH_OF\(\)/void/gs;
930
931                         print STDERR "DEBUG: \$_ = \"$_\"\n" if $debug;
932                         if (/^\#INFO:([^:]*):(.*)$/) {
933                                 $plats = $1;
934                                 $algs = $2;
935                                 print STDERR "DEBUG: found info on platforms ($plats) and algorithms ($algs)\n" if $debug;
936                                 next;
937                         } elsif (/^\s*OPENSSL_EXTERN\s.*?(\w+(\{[0-9]+\})?)(\[[0-9]*\])*\s*$/) {
938                                 $s = $1;
939                                 $k = "VARIABLE";
940                                 print STDERR "DEBUG: found external variable $s\n" if $debug;
941                         } elsif (/TYPEDEF_\w+_OF/s) {
942                                 next;
943                         } elsif (/(\w+)\s*\(\).*/s) {   # first token prior [first] () is
944                                 $s = $1;                # a function name!
945                                 print STDERR "DEBUG: found function $s\n" if $debug;
946                         } elsif (/\(/ and not (/=/)) {
947                                 print STDERR "File $file: cannot parse: $_;\n";
948                                 next;
949                         } else {
950                                 next;
951                         }
952
953                         $syms{$s} = 1;
954                         $kind{$s} = $k;
955
956                         $p = $plats;
957                         $a = $algs;
958                         $a .= ",BF" if($s =~ /EVP_bf/);
959                         $a .= ",CAST" if($s =~ /EVP_cast/);
960                         $a .= ",DES" if($s =~ /EVP_des/);
961                         $a .= ",DSA" if($s =~ /EVP_dss/);
962                         $a .= ",IDEA" if($s =~ /EVP_idea/);
963                         $a .= ",MD2" if($s =~ /EVP_md2/);
964                         $a .= ",MD4" if($s =~ /EVP_md4/);
965                         $a .= ",MD5" if($s =~ /EVP_md5/);
966                         $a .= ",RC2" if($s =~ /EVP_rc2/);
967                         $a .= ",RC4" if($s =~ /EVP_rc4/);
968                         $a .= ",RC5" if($s =~ /EVP_rc5/);
969                         $a .= ",RIPEMD" if($s =~ /EVP_ripemd/);
970                         $a .= ",SHA" if($s =~ /EVP_sha/);
971                         $a .= ",RSA" if($s =~ /EVP_(Open|Seal)(Final|Init)/);
972                         $a .= ",RSA" if($s =~ /PEM_Seal(Final|Init|Update)/);
973                         $a .= ",RSA" if($s =~ /RSAPrivateKey/);
974                         $a .= ",RSA" if($s =~ /SSLv23?_((client|server)_)?method/);
975
976                         $platform{$s} =
977                             &reduce_platforms((defined($platform{$s})?$platform{$s}.',':"").$p);
978                         $algorithm{$s} .= ','.$a;
979
980                         if (defined($variant{$s})) {
981                                 foreach $v (split /;/,$variant{$s}) {
982                                         (my $r, my $p, my $k) = split(/:/,$v);
983                                         my $ip = join ',',map({ /^!(.*)$/ ? $1 : "!".$_ } split /,/, $p);
984                                         $syms{$r} = 1;
985                                         if (!defined($k)) { $k = $kind{$s}; }
986                                         $kind{$r} = $k."(".$s.")";
987                                         $algorithm{$r} = $algorithm{$s};
988                                         $platform{$r} = &reduce_platforms($platform{$s}.",".$p.",".$p);
989                                         $platform{$s} = &reduce_platforms($platform{$s}.','.$ip.','.$ip);
990                                         print STDERR "DEBUG: \$variant{\"$s\"} = ",$v,"; \$r = $r; \$p = ",$platform{$r},"; \$a = ",$algorithm{$r},"; \$kind = ",$kind{$r},"\n" if $debug;
991                                 }
992                         }
993                         print STDERR "DEBUG: \$s = $s; \$p = ",$platform{$s},"; \$a = ",$algorithm{$s},"; \$kind = ",$kind{$s},"\n" if $debug;
994                 }
995         }
996
997         # Prune the returned symbols
998
999         delete $syms{"bn_dump1"};
1000         $platform{"BIO_s_log"} .= ",!WIN32,!WIN16,!macintosh";
1001
1002         $platform{"PEM_read_NS_CERT_SEQ"} = "VMS";
1003         $platform{"PEM_write_NS_CERT_SEQ"} = "VMS";
1004         $platform{"PEM_read_P8_PRIV_KEY_INFO"} = "VMS";
1005         $platform{"PEM_write_P8_PRIV_KEY_INFO"} = "VMS";
1006         $platform{"EVP_sha384"} = "!VMSVAX";
1007         $platform{"EVP_sha512"} = "!VMSVAX";
1008         $platform{"SHA384_Init"} = "!VMSVAX";
1009         $platform{"SHA384_Transform"} = "!VMSVAX";
1010         $platform{"SHA384_Update"} = "!VMSVAX";
1011         $platform{"SHA384_Final"} = "!VMSVAX";
1012         $platform{"SHA384"} = "!VMSVAX";
1013         $platform{"SHA512_Init"} = "!VMSVAX";
1014         $platform{"SHA512_Transform"} = "!VMSVAX";
1015         $platform{"SHA512_Update"} = "!VMSVAX";
1016         $platform{"SHA512_Final"} = "!VMSVAX";
1017         $platform{"SHA512"} = "!VMSVAX";
1018         $platform{"WHIRLPOOL_Init"} = "!VMSVAX";
1019         $platform{"WHIRLPOOL"} = "!VMSVAX";
1020         $platform{"WHIRLPOOL_BitUpdate"} = "!VMSVAX";
1021         $platform{"EVP_whirlpool"} = "!VMSVAX";
1022         $platform{"WHIRLPOOL_Final"} = "!VMSVAX";
1023         $platform{"WHIRLPOOL_Update"} = "!VMSVAX";
1024
1025
1026         # Info we know about
1027
1028         push @ret, map { $_."\\".&info_string($_,"EXIST",
1029                                               $platform{$_},
1030                                               $kind{$_},
1031                                               $algorithm{$_}) } keys %syms;
1032
1033         if (keys %unknown_algorithms) {
1034                 print STDERR "WARNING: mkdef.pl doesn't know the following algorithms:\n";
1035                 print STDERR "\t",join("\n\t",keys %unknown_algorithms),"\n";
1036         }
1037         return(@ret);
1038 }
1039
1040 # Param: string of comma-separated platform-specs.
1041 sub reduce_platforms
1042 {
1043         my ($platforms) = @_;
1044         my $pl = defined($platforms) ? $platforms : "";
1045         my %p = map { $_ => 0 } split /,/, $pl;
1046         my $ret;
1047
1048         print STDERR "DEBUG: Entered reduce_platforms with \"$platforms\"\n"
1049             if $debug;
1050         # We do this, because if there's code like the following, it really
1051         # means the function exists in all cases and should therefore be
1052         # everywhere.  By increasing and decreasing, we may attain 0:
1053         #
1054         # ifndef WIN16
1055         #    int foo();
1056         # else
1057         #    int _fat foo();
1058         # endif
1059         foreach $platform (split /,/, $pl) {
1060                 if ($platform =~ /^!(.*)$/) {
1061                         $p{$1}--;
1062                 } else {
1063                         $p{$platform}++;
1064                 }
1065         }
1066         foreach $platform (keys %p) {
1067                 if ($p{$platform} == 0) { delete $p{$platform}; }
1068         }
1069
1070         delete $p{""};
1071
1072         $ret = join(',',sort(map { $p{$_} < 0 ? "!".$_ : $_ } keys %p));
1073         print STDERR "DEBUG: Exiting reduce_platforms with \"$ret\"\n"
1074             if $debug;
1075         return $ret;
1076 }
1077
1078 sub info_string {
1079         (my $symbol, my $exist, my $platforms, my $kind, my $algorithms) = @_;
1080
1081         my %a = defined($algorithms) ?
1082             map { $_ => 1 } split /,/, $algorithms : ();
1083         my $k = defined($kind) ? $kind : "FUNCTION";
1084         my $ret;
1085         my $p = &reduce_platforms($platforms);
1086
1087         delete $a{""};
1088
1089         $ret = $exist;
1090         $ret .= ":".$p;
1091         $ret .= ":".$k;
1092         $ret .= ":".join(',',sort keys %a);
1093         return $ret;
1094 }
1095
1096 sub maybe_add_info {
1097         (my $name, *nums, my @symbols) = @_;
1098         my $sym;
1099         my $new_info = 0;
1100         my %syms=();
1101
1102         print STDERR "Updating $name info\n";
1103         foreach $sym (@symbols) {
1104                 (my $s, my $i) = split /\\/, $sym;
1105                 if (defined($nums{$s})) {
1106                         $i =~ s/^(.*?:.*?:\w+)(\(\w+\))?/$1/;
1107                         (my $n, my $dummy) = split /\\/, $nums{$s};
1108                         if (!defined($dummy) || $i ne $dummy) {
1109                                 $nums{$s} = $n."\\".$i;
1110                                 $new_info++;
1111                                 print STDERR "DEBUG: maybe_add_info for $s: \"$dummy\" => \"$i\"\n" if $debug;
1112                         }
1113                 }
1114                 $syms{$s} = 1;
1115         }
1116
1117         my @s=sort { &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n") } keys %nums;
1118         foreach $sym (@s) {
1119                 (my $n, my $i) = split /\\/, $nums{$sym};
1120                 if (!defined($syms{$sym}) && $i !~ /^NOEXIST:/) {
1121                         $new_info++;
1122                         print STDERR "DEBUG: maybe_add_info for $sym: -> undefined\n" if $debug;
1123                 }
1124         }
1125         if ($new_info) {
1126                 print STDERR "$new_info old symbols got an info update\n";
1127                 if (!$do_rewrite) {
1128                         print STDERR "You should do a rewrite to fix this.\n";
1129                 }
1130         } else {
1131                 print STDERR "No old symbols needed info update\n";
1132         }
1133 }
1134
1135 # Param: string of comma-separated keywords, each possibly prefixed with a "!"
1136 sub is_valid
1137 {
1138         my ($keywords_txt,$platforms) = @_;
1139         my (@keywords) = split /,/,$keywords_txt;
1140         my ($falsesum, $truesum) = (0, 1);
1141
1142         # Param: one keyword
1143         sub recognise
1144         {
1145                 my ($keyword,$platforms) = @_;
1146
1147                 if ($platforms) {
1148                         # platforms
1149                         if ($keyword eq "VMSVAX" && $VMSVAX) { return 1; }
1150                         if ($keyword eq "VMSNonVAX" && $VMSNonVAX) { return 1; }
1151                         if ($keyword eq "VMS" && $VMS) { return 1; }
1152                         if ($keyword eq "WIN32" && $W32) { return 1; }
1153                         if ($keyword eq "WIN16" && $W16) { return 1; }
1154                         if ($keyword eq "WINNT" && $NT) { return 1; }
1155                         if ($keyword eq "OS2" && $OS2) { return 1; }
1156                         # Special platforms:
1157                         # EXPORT_VAR_AS_FUNCTION means that global variables
1158                         # will be represented as functions.  This currently
1159                         # only happens on VMS-VAX.
1160                         if ($keyword eq "EXPORT_VAR_AS_FUNCTION" && ($VMSVAX || $W32 || $W16)) {
1161                                 return 1;
1162                         }
1163                         if ($keyword eq "OPENSSL_FIPS" && $fips) {
1164                                 return 1;
1165                         }
1166                         if ($keyword eq "ZLIB" && $zlib) { return 1; }
1167                         return 0;
1168                 } else {
1169                         # algorithms
1170                         if ($keyword eq "RC2" && $no_rc2) { return 0; }
1171                         if ($keyword eq "RC4" && $no_rc4) { return 0; }
1172                         if ($keyword eq "RC5" && $no_rc5) { return 0; }
1173                         if ($keyword eq "IDEA" && $no_idea) { return 0; }
1174                         if ($keyword eq "DES" && $no_des) { return 0; }
1175                         if ($keyword eq "BF" && $no_bf) { return 0; }
1176                         if ($keyword eq "CAST" && $no_cast) { return 0; }
1177                         if ($keyword eq "MD2" && $no_md2) { return 0; }
1178                         if ($keyword eq "MD4" && $no_md4) { return 0; }
1179                         if ($keyword eq "MD5" && $no_md5) { return 0; }
1180                         if ($keyword eq "SHA" && $no_sha) { return 0; }
1181                         if ($keyword eq "RIPEMD" && $no_ripemd) { return 0; }
1182                         if ($keyword eq "MDC2" && $no_mdc2) { return 0; }
1183                         if ($keyword eq "WHIRLPOOL" && $no_whirlpool) { return 0; }
1184                         if ($keyword eq "RSA" && $no_rsa) { return 0; }
1185                         if ($keyword eq "DSA" && $no_dsa) { return 0; }
1186                         if ($keyword eq "DH" && $no_dh) { return 0; }
1187                         if ($keyword eq "EC" && $no_ec) { return 0; }
1188                         if ($keyword eq "ECDSA" && $no_ecdsa) { return 0; }
1189                         if ($keyword eq "ECDH" && $no_ecdh) { return 0; }
1190                         if ($keyword eq "HMAC" && $no_hmac) { return 0; }
1191                         if ($keyword eq "AES" && $no_aes) { return 0; }
1192                         if ($keyword eq "CAMELLIA" && $no_camellia) { return 0; }
1193                         if ($keyword eq "SEED" && $no_seed) { return 0; }
1194                         if ($keyword eq "EVP" && $no_evp) { return 0; }
1195                         if ($keyword eq "LHASH" && $no_lhash) { return 0; }
1196                         if ($keyword eq "STACK" && $no_stack) { return 0; }
1197                         if ($keyword eq "ERR" && $no_err) { return 0; }
1198                         if ($keyword eq "BUFFER" && $no_buffer) { return 0; }
1199                         if ($keyword eq "BIO" && $no_bio) { return 0; }
1200                         if ($keyword eq "COMP" && $no_comp) { return 0; }
1201                         if ($keyword eq "DSO" && $no_dso) { return 0; }
1202                         if ($keyword eq "KRB5" && $no_krb5) { return 0; }
1203                         if ($keyword eq "ENGINE" && $no_engine) { return 0; }
1204                         if ($keyword eq "HW" && $no_hw) { return 0; }
1205                         if ($keyword eq "FP_API" && $no_fp_api) { return 0; }
1206                         if ($keyword eq "STATIC_ENGINE" && $no_static_engine) { return 0; }
1207                         if ($keyword eq "GMP" && $no_gmp) { return 0; }
1208                         if ($keyword eq "RFC3779" && $no_rfc3779) { return 0; }
1209                         if ($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 "EC2M" && $no_ec2m) { return 0; }
1213                         if ($keyword eq "NEXTPROTONEG" && $no_nextprotoneg) { return 0; }
1214                         if ($keyword eq "EC_NISTP_64_GCC_128" && $no_nistp_gcc)
1215                                         { return 0; }
1216                         if ($keyword eq "SSL2" && $no_ssl2) { return 0; }
1217                         if ($keyword eq "SSL2_METHOD" && $no_ssl2_method) { return 0; }
1218                         if ($keyword eq "SSL3_METHOD" && $no_ssl3_method) { return 0; }
1219                         if ($keyword eq "CAPIENG" && $no_capieng) { return 0; }
1220                         if ($keyword eq "JPAKE" && $no_jpake) { return 0; }
1221                         if ($keyword eq "SRP" && $no_srp) { return 0; }
1222                         if ($keyword eq "SCTP" && $no_sctp) { return 0; }
1223                         if ($keyword eq "SRTP" && $no_srtp) { return 0; }
1224                         if ($keyword eq "UNIT_TEST" && $no_unit_test) { return 0; }
1225                         if ($keyword eq "DEPRECATED" && $no_deprecated) { 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                 { $libname.="32"; }
1304         elsif ($W16)
1305                 { $libname.="16"; }
1306         elsif ($OS2)
1307                 { # DLL names should not clash on the whole system.
1308                   # However, they should not have any particular relationship
1309                   # to the name of the static library.  Chose descriptive names
1310                   # (must be at most 8 chars).
1311                   my %translate = (ssl => 'open_ssl', crypto => 'cryptssl');
1312                   $libname = $translate{$name} || $name;
1313                   $liboptions = <<EOO;
1314 INITINSTANCE
1315 DATA MULTIPLE NONSHARED
1316 EOO
1317                   # Vendor field can't contain colon, drat; so we omit http://
1318                   $description = "\@#$http_vendor:$version#\@$what; DLL for library $name.  Build for EMX -Zmtd";
1319                 }
1320
1321         print OUT <<"EOF";
1322 ;
1323 ; Definition file for the DLL version of the $name library from OpenSSL
1324 ;
1325
1326 LIBRARY         $libname        $liboptions
1327
1328 EOF
1329
1330         if ($W16) {
1331                 print <<"EOF";
1332 CODE            PRELOAD MOVEABLE
1333 DATA            PRELOAD MOVEABLE SINGLE
1334
1335 EXETYPE         WINDOWS
1336
1337 HEAPSIZE        4096
1338 STACKSIZE       8192
1339
1340 EOF
1341         }
1342
1343         print "EXPORTS\n";
1344
1345         (@e)=grep(/^SSLeay(\{[0-9]+\})?\\.*?:.*?:FUNCTION/,@symbols);
1346         (@r)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:FUNCTION/ && !/^SSLeay(\{[0-9]+\})?\\.*?:.*?:FUNCTION/,@symbols);
1347         (@v)=grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:VARIABLE/,@symbols);
1348         @symbols=((sort @e),(sort @r), (sort @v));
1349
1350
1351         foreach $sym (@symbols) {
1352                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1353                 my $v = 0;
1354                 $v = 1 if $i =~ /^.*?:.*?:VARIABLE/;
1355                 if (!defined($nums{$s})) {
1356                         printf STDERR "Warning: $s does not have a number assigned\n"
1357                             if(!$do_update);
1358                 } else {
1359                         (my $n, my $dummy) = split /\\/, $nums{$s};
1360                         my %pf = ();
1361                         my $p = ($i =~ /^[^:]*:([^:]*):/,$1);
1362                         my $a = ($i =~ /^[^:]*:[^:]*:[^:]*:([^:]*)/,$1);
1363                         if (is_valid($p,1) && is_valid($a,0)) {
1364                                 my $s2 = ($s =~ /^(.*?)(\{[0-9]+\})?$/, $1);
1365                                 if ($prev eq $s2) {
1366                                         print STDERR "Warning: Symbol '",$s2,"' redefined. old=",($nums{$prev} =~ /^(.*?)\\/,$1),", new=",($nums{$s2} =~ /^(.*?)\\/,$1),"\n";
1367                                 }
1368                                 $prev = $s2;    # To warn about duplicates...
1369                                 if($v && !$OS2) {
1370                                         printf OUT "    %s%-39s @%-8d DATA\n",($W32)?"":"_",$s2,$n;
1371                                 } else {
1372                                         printf OUT "    %s%-39s @%d\n",($W32||$OS2)?"":"_",$s2,$n;
1373                                 }
1374                         }
1375                 }
1376         }
1377         printf OUT "\n";
1378 }
1379
1380 sub load_numbers
1381 {
1382         my($name)=@_;
1383         my(@a,%ret);
1384
1385         $max_num = 0;
1386         $num_noinfo = 0;
1387         $prev = "";
1388         $prev_cnt = 0;
1389
1390         open(IN,"<$name") || die "unable to open $name:$!\n";
1391         while (<IN>) {
1392                 chop;
1393                 s/#.*$//;
1394                 next if /^\s*$/;
1395                 @a=split;
1396                 if (defined $ret{$a[0]}) {
1397                         # This is actually perfectly OK
1398                         #print STDERR "Warning: Symbol '",$a[0],"' redefined. old=",$ret{$a[0]},", new=",$a[1],"\n";
1399                 }
1400                 if ($max_num > $a[1]) {
1401                         print STDERR "Warning: Number decreased from ",$max_num," to ",$a[1],"\n";
1402                 }
1403                 elsif ($max_num == $a[1]) {
1404                         # This is actually perfectly OK
1405                         #print STDERR "Warning: Symbol ",$a[0]," has same number as previous ",$prev,": ",$a[1],"\n";
1406                         if ($a[0] eq $prev) {
1407                                 $prev_cnt++;
1408                                 $a[0] .= "{$prev_cnt}";
1409                         }
1410                 }
1411                 else {
1412                         $prev_cnt = 0;
1413                 }
1414                 if ($#a < 2) {
1415                         # Existence will be proven later, in do_defs
1416                         $ret{$a[0]}=$a[1];
1417                         $num_noinfo++;
1418                 } else {
1419                         $ret{$a[0]}=$a[1]."\\".$a[2]; # \\ is a special marker
1420                 }
1421                 $max_num = $a[1] if $a[1] > $max_num;
1422                 $prev=$a[0];
1423         }
1424         if ($num_noinfo) {
1425                 print STDERR "Warning: $num_noinfo symbols were without info.";
1426                 if ($do_rewrite) {
1427                         printf STDERR "  The rewrite will fix this.\n";
1428                 } else {
1429                         printf STDERR "  You should do a rewrite to fix this.\n";
1430                 }
1431         }
1432         close(IN);
1433         return(%ret);
1434 }
1435
1436 sub parse_number
1437 {
1438         (my $str, my $what) = @_;
1439         (my $n, my $i) = split(/\\/,$str);
1440         if ($what eq "n") {
1441                 return $n;
1442         } else {
1443                 return $i;
1444         }
1445 }
1446
1447 sub rewrite_numbers
1448 {
1449         (*OUT,$name,*nums,@symbols)=@_;
1450         my $thing;
1451
1452         print STDERR "Rewriting $name\n";
1453
1454         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1455         my $r; my %r; my %rsyms;
1456         foreach $r (@r) {
1457                 (my $s, my $i) = split /\\/, $r;
1458                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1459                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1460                 $r{$a} = $s."\\".$i;
1461                 $rsyms{$s} = 1;
1462         }
1463
1464         my %syms = ();
1465         foreach $_ (@symbols) {
1466                 (my $n, my $i) = split /\\/;
1467                 $syms{$n} = 1;
1468         }
1469
1470         my @s=sort {
1471             &parse_number($nums{$a},"n") <=> &parse_number($nums{$b},"n")
1472             || $a cmp $b
1473         } keys %nums;
1474         foreach $sym (@s) {
1475                 (my $n, my $i) = split /\\/, $nums{$sym};
1476                 next if defined($i) && $i =~ /^.*?:.*?:\w+\(\w+\)/;
1477                 next if defined($rsyms{$sym});
1478                 print STDERR "DEBUG: rewrite_numbers for sym = ",$sym,": i = ",$i,", n = ",$n,", rsym{sym} = ",$rsyms{$sym},"syms{sym} = ",$syms{$sym},"\n" if $debug;
1479                 $i="NOEXIST::FUNCTION:"
1480                         if !defined($i) || $i eq "" || !defined($syms{$sym});
1481                 my $s2 = $sym;
1482                 $s2 =~ s/\{[0-9]+\}$//;
1483                 printf OUT "%s%-39s %d\t%s\n","",$s2,$n,$i;
1484                 if (exists $r{$sym}) {
1485                         (my $s, $i) = split /\\/,$r{$sym};
1486                         my $s2 = $s;
1487                         $s2 =~ s/\{[0-9]+\}$//;
1488                         printf OUT "%s%-39s %d\t%s\n","",$s2,$n,$i;
1489                 }
1490         }
1491 }
1492
1493 sub update_numbers
1494 {
1495         (*OUT,$name,*nums,my $start_num, my @symbols)=@_;
1496         my $new_syms = 0;
1497
1498         print STDERR "Updating $name numbers\n";
1499
1500         my @r = grep(/^\w+(\{[0-9]+\})?\\.*?:.*?:\w+\(\w+\)/,@symbols);
1501         my $r; my %r; my %rsyms;
1502         foreach $r (@r) {
1503                 (my $s, my $i) = split /\\/, $r;
1504                 my $a = $1 if $i =~ /^.*?:.*?:\w+\((\w+)\)/;
1505                 $i =~ s/^(.*?:.*?:\w+)\(\w+\)/$1/;
1506                 $r{$a} = $s."\\".$i;
1507                 $rsyms{$s} = 1;
1508         }
1509
1510         foreach $sym (@symbols) {
1511                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1512                 next if $i =~ /^.*?:.*?:\w+\(\w+\)/;
1513                 next if defined($rsyms{$sym});
1514                 die "ERROR: Symbol $sym had no info attached to it."
1515                     if $i eq "";
1516                 if (!exists $nums{$s}) {
1517                         $new_syms++;
1518                         my $s2 = $s;
1519                         $s2 =~ s/\{[0-9]+\}$//;
1520                         printf OUT "%s%-39s %d\t%s\n","",$s2, ++$start_num,$i;
1521                         if (exists $r{$s}) {
1522                                 ($s, $i) = split /\\/,$r{$s};
1523                                 $s =~ s/\{[0-9]+\}$//;
1524                                 printf OUT "%s%-39s %d\t%s\n","",$s, $start_num,$i;
1525                         }
1526                 }
1527         }
1528         if($new_syms) {
1529                 print STDERR "$new_syms New symbols added\n";
1530         } else {
1531                 print STDERR "No New symbols Added\n";
1532         }
1533 }
1534
1535 sub check_existing
1536 {
1537         (*nums, my @symbols)=@_;
1538         my %existing; my @remaining;
1539         @remaining=();
1540         foreach $sym (@symbols) {
1541                 (my $s, my $i) = $sym =~ /^(.*?)\\(.*)$/;
1542                 $existing{$s}=1;
1543         }
1544         foreach $sym (keys %nums) {
1545                 if (!exists $existing{$sym}) {
1546                         push @remaining, $sym;
1547                 }
1548         }
1549         if(@remaining) {
1550                 print STDERR "The following symbols do not seem to exist:\n";
1551                 foreach $sym (@remaining) {
1552                         print STDERR "\t",$sym,"\n";
1553                 }
1554         }
1555 }
1556