summaryrefslogtreecommitdiffstats
path: root/tools/pidl/lib/Parse/Pidl/Samba4/Header.pm
blob: a0b002f67248168e26d521a1be4c87256e10d61e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
###################################################
# create C header files for an IDL structure
# Copyright tridge@samba.org 2000
# Copyright jelmer@samba.org 2005
# released under the GNU GPL

package Parse::Pidl::Samba4::Header;
require Exporter;

@ISA = qw(Exporter);
@EXPORT_OK = qw(GenerateFunctionInEnv GenerateFunctionOutEnv EnvSubstituteValue GenerateStructEnv);

use strict;
use warnings;
use Parse::Pidl qw(fatal);
use Parse::Pidl::Typelist qw(mapTypeName scalar_is_reference);
use Parse::Pidl::Util qw(has_property is_constant unmake_str ParseExpr);
use Parse::Pidl::Samba4 qw(is_intree ElementStars ArrayBrackets choose_header);

use vars qw($VERSION);
$VERSION = '0.01';

my($res);
my($tab_depth);

sub pidl($) { $res .= shift; }

sub tabs()
{
	my $res = "";
	$res .="\t" foreach (1..$tab_depth);
	return $res;
}

#####################################################################
# parse a properties list
sub HeaderProperties($$)
{
	my($props,$ignores) = @_;
	my $ret = "";

	foreach my $d (sort(keys %{$props})) {
		next if (grep(/^$d$/, @$ignores));
		if($props->{$d} ne "1") {
			$ret.= "$d($props->{$d}),";
		} else {
			$ret.="$d,";
		}
	}

	if ($ret) {
		pidl "/* [" . substr($ret, 0, -1) . "] */";
	}
}

#####################################################################
# parse a structure element
sub HeaderElement($)
{
	my($element) = shift;

	pidl tabs();
	if (has_property($element, "represent_as")) {
		pidl mapTypeName($element->{PROPERTIES}->{represent_as})." ";
	} else {
		if (ref($element->{TYPE}) eq "HASH") {
			HeaderType($element, $element->{TYPE}, $element->{TYPE}->{NAME});
		} else {
			HeaderType($element, $element->{TYPE}, "");
		}
		pidl " ".ElementStars($element);
	}
	pidl $element->{NAME};
	pidl ArrayBrackets($element);

	pidl ";";
	if (defined $element->{PROPERTIES}) {
		HeaderProperties($element->{PROPERTIES}, ["in", "out"]);
	}
	pidl "\n";
}

#####################################################################
# parse a struct
sub HeaderStruct($$;$)
{
	my($struct,$name,$tail) = @_;
	pidl "struct $name";
	pidl $tail if defined($tail) and not defined($struct->{ELEMENTS});
	return if (not defined($struct->{ELEMENTS}));
	pidl " {\n";
	$tab_depth++;
	my $el_count=0;
	foreach (@{$struct->{ELEMENTS}}) {
		HeaderElement($_);
		$el_count++;
	}
	if ($el_count == 0) {
		# some compilers can't handle empty structures
		pidl tabs()."char _empty_;\n";
	}
	$tab_depth--;
	pidl tabs()."}";
	if (defined $struct->{PROPERTIES}) {
		HeaderProperties($struct->{PROPERTIES}, []);
	}
	pidl $tail if defined($tail);
}

#####################################################################
# parse a enum
sub HeaderEnum($$;$)
{
	my($enum,$name,$tail) = @_;
	my $first = 1;

	pidl "enum $name";
	if (defined($enum->{ELEMENTS})) {
		pidl "\n#ifndef USE_UINT_ENUMS\n";
		pidl " {\n";
		$tab_depth++;
		foreach my $e (@{$enum->{ELEMENTS}}) {
			my @enum_els = ();
			unless ($first) { pidl ",\n"; }
			$first = 0;
			pidl tabs();
			@enum_els = split(/=/, $e);
			if (@enum_els == 2) {
				pidl $enum_els[0];
				pidl "=(int)";
				pidl "(";
				pidl $enum_els[1];
				pidl ")";
			} else {
				pidl $e;
			}
		}
		pidl "\n";
		$tab_depth--;
		pidl "}";
		pidl "\n";
		pidl "#else\n";
		my $count = 0;
		my $with_val = 0;
		my $without_val = 0;
		pidl " { __do_not_use_enum_$name=INT_MAX}\n";
		foreach my $e (@{$enum->{ELEMENTS}}) {
			my $t = "$e";
			my $name;
			my $value;
			if ($t =~ /(.*)=(.*)/) {
				$name = $1;
				$value = $2;
				$with_val = 1;
				fatal($e->{ORIGINAL}, "you can't mix enum member with values and without values!")
					unless ($without_val == 0);
			} else {
				$name = $t;
				$value = $count++;
				$without_val = 1;
				fatal($e->{ORIGINAL}, "you can't mix enum member with values and without values!")
					unless ($with_val == 0);
			}
			pidl "#define $name ( $value )\n";
		}
		pidl "#endif\n";
	}
	pidl $tail if defined($tail);
}

#####################################################################
# parse a bitmap
sub HeaderBitmap($$)
{
	my($bitmap,$name) = @_;

	return unless defined($bitmap->{ELEMENTS});

	pidl "/* bitmap $name */\n";
	pidl "#define $_\n" foreach (@{$bitmap->{ELEMENTS}});
	pidl "\n";
}

#####################################################################
# parse a union
sub HeaderUnion($$;$)
{
	my($union,$name,$tail) = @_;
	my %done = ();

	pidl "union $name";
	pidl $tail if defined($tail) and not defined($union->{ELEMENTS});
	return if (not defined($union->{ELEMENTS}));
	pidl " {\n";
	$tab_depth++;
	my $needed = 0;
	foreach my $e (@{$union->{ELEMENTS}}) {
		if ($e->{TYPE} ne "EMPTY") {
			if (! defined $done{$e->{NAME}}) {
				HeaderElement($e);
			}
			$done{$e->{NAME}} = 1;
			$needed++;
		}
	}
	if (!$needed) {
		# sigh - some compilers don't like empty structures
		pidl tabs()."int _dummy_element;\n";
	}
	$tab_depth--;
	pidl "}";

	if (defined $union->{PROPERTIES}) {
		HeaderProperties($union->{PROPERTIES}, []);
	}
	pidl $tail if defined($tail);
}

#####################################################################
# parse a pipe
sub HeaderPipe($$;$)
{
	my($pipe,$name,$tail) = @_;

	my $struct = $pipe->{DATA};
	my $e = $struct->{ELEMENTS}[1];

	pidl "struct $name;\n";
	pidl "struct $struct->{NAME} {\n";
	$tab_depth++;
	pidl tabs()."uint32_t count;\n";
	pidl tabs().mapTypeName($e->{TYPE})." *array;\n";
	$tab_depth--;
	pidl "}";

	if (defined $struct->{PROPERTIES}) {
		HeaderProperties($struct->{PROPERTIES}, []);
	}

	pidl $tail if defined($tail);
}

#####################################################################
# parse a type
sub HeaderType($$$;$)
{
	my($e,$data,$name,$tail) = @_;
	if (ref($data) eq "HASH") {
		($data->{TYPE} eq "ENUM") && HeaderEnum($data, $name, $tail);
		($data->{TYPE} eq "BITMAP") && HeaderBitmap($data, $name);
		($data->{TYPE} eq "STRUCT") && HeaderStruct($data, $name, $tail);
		($data->{TYPE} eq "UNION") && HeaderUnion($data, $name, $tail);
		($data->{TYPE} eq "PIPE") && HeaderPipe($data, $name, $tail);
		return;
	}

	if (has_property($e, "charset")) {
		pidl "const char";
	} else {
		pidl mapTypeName($e->{TYPE});
	}
	pidl $tail if defined($tail);
}

#####################################################################
# parse a typedef
sub HeaderTypedef($;$)
{
	my($typedef,$tail) = @_;
	# Don't print empty "enum foo;", since some compilers don't like it.
	return if ($typedef->{DATA}->{TYPE} eq "ENUM" and not defined($typedef->{DATA}->{ELEMENTS}));
	HeaderType($typedef, $typedef->{DATA}, $typedef->{NAME}, $tail) if defined ($typedef->{DATA});
}

#####################################################################
# parse a const
sub HeaderConst($)
{
	my($const) = shift;
	if (!defined($const->{ARRAY_LEN}[0])) {
		pidl "#define $const->{NAME}\t( $const->{VALUE} )\n";
	} else {
		pidl "#define $const->{NAME}\t $const->{VALUE}\n";
	}
}

sub ElementDirection($)
{
	my ($e) = @_;

	return "inout" if (has_property($e, "in") and has_property($e, "out"));
	return "in" if (has_property($e, "in"));
	return "out" if (has_property($e, "out"));
	return "inout";
}

#####################################################################
# parse a function
sub HeaderFunctionInOut($$)
{
	my($fn,$prop) = @_;

	return unless defined($fn->{ELEMENTS});

	foreach my $e (@{$fn->{ELEMENTS}}) {
		HeaderElement($e) if (ElementDirection($e) eq $prop);
	}
}

#####################################################################
# determine if we need an "in" or "out" section
sub HeaderFunctionInOut_needed($$)
{
	my($fn,$prop) = @_;

	return 1 if ($prop eq "out" && defined($fn->{RETURN_TYPE}));

	return undef unless defined($fn->{ELEMENTS});

	foreach my $e (@{$fn->{ELEMENTS}}) {
		return 1 if (ElementDirection($e) eq $prop);
	}

	return undef;
}

my %headerstructs;

#####################################################################
# parse a function
sub HeaderFunction($)
{
	my($fn) = shift;

	return if ($headerstructs{$fn->{NAME}});

	$headerstructs{$fn->{NAME}} = 1;

	pidl "\nstruct $fn->{NAME} {\n";
	$tab_depth++;
	my $needed = 0;

	if (HeaderFunctionInOut_needed($fn, "in") or
	    HeaderFunctionInOut_needed($fn, "inout")) {
		pidl tabs()."struct {\n";
		$tab_depth++;
		HeaderFunctionInOut($fn, "in");
		HeaderFunctionInOut($fn, "inout");
		$tab_depth--;
		pidl tabs()."} in;\n\n";
		$needed++;
	}

	if (HeaderFunctionInOut_needed($fn, "out") or
	    HeaderFunctionInOut_needed($fn, "inout")) {
		pidl tabs()."struct {\n";
		$tab_depth++;
		HeaderFunctionInOut($fn, "out");
		HeaderFunctionInOut($fn, "inout");
		if (defined($fn->{RETURN_TYPE})) {
			pidl tabs().mapTypeName($fn->{RETURN_TYPE}) . " result;\n";
		}
		$tab_depth--;
		pidl tabs()."} out;\n\n";
		$needed++;
	}

	if (!$needed) {
		# sigh - some compilers don't like empty structures
		pidl tabs()."int _dummy_element;\n";
	}

	$tab_depth--;
	pidl "};\n\n";
}

sub HeaderImport
{
	my @imports = @_;
	foreach my $import (@imports) {
		$import = unmake_str($import);
		$import =~ s/\.idl$//;
		pidl choose_header("librpc/gen_ndr/$import\.h", "gen_ndr/$import.h") . "\n";
	}
}

sub HeaderInclude
{
	my @includes = @_;
	foreach (@includes) {
		pidl "#include $_\n";
	}
}

#####################################################################
# parse the interface definitions
sub HeaderInterface($)
{
	my($interface) = shift;

	pidl "#ifndef _HEADER_$interface->{NAME}\n";
	pidl "#define _HEADER_$interface->{NAME}\n\n";

	foreach my $c (@{$interface->{CONSTS}}) {
		HeaderConst($c);
	}

	foreach my $t (@{$interface->{TYPES}}) {
		HeaderTypedef($t, ";\n\n") if ($t->{TYPE} eq "TYPEDEF");
		HeaderStruct($t, $t->{NAME}, ";\n\n") if ($t->{TYPE} eq "STRUCT");
		HeaderUnion($t, $t->{NAME}, ";\n\n") if ($t->{TYPE} eq "UNION");
		HeaderEnum($t, $t->{NAME}, ";\n\n") if ($t->{TYPE} eq "ENUM");
		HeaderBitmap($t, $t->{NAME}) if ($t->{TYPE} eq "BITMAP");
		HeaderPipe($t, $t->{NAME}, "\n\n") if ($t->{TYPE} eq "PIPE");
	}

	foreach my $fn (@{$interface->{FUNCTIONS}}) {
		HeaderFunction($fn);
	}

	pidl "#endif /* _HEADER_$interface->{NAME} */\n";
}

sub HeaderQuote($)
{
	my($quote) = shift;

	pidl unmake_str($quote->{DATA}) . "\n";
}

#####################################################################
# parse a parsed IDL into a C header
sub Parse($)
{
	my($ndr) = shift;
	$tab_depth = 0;

	$res = "";
	%headerstructs = ();
	pidl "/* header auto-generated by pidl */\n\n";

	my $ifacename = "";

	# work out a unique interface name
	foreach (@{$ndr}) {
		if ($_->{TYPE} eq "INTERFACE") {
			$ifacename = $_->{NAME};
			last;
		}
	}

	pidl "#ifndef _PIDL_HEADER_$ifacename\n";
	pidl "#define _PIDL_HEADER_$ifacename\n\n";

	if (!is_intree()) {
		pidl "#include <util/data_blob.h>\n";
	}
	pidl "#include <stdint.h>\n";
	pidl "\n";
	# FIXME: Include this only if NTSTATUS was actually used
	pidl choose_header("libcli/util/ntstatus.h", "core/ntstatus.h") . "\n";
	pidl "\n";

	foreach (@{$ndr}) {
		($_->{TYPE} eq "CPP_QUOTE") && HeaderQuote($_);
		($_->{TYPE} eq "INTERFACE") && HeaderInterface($_);
		($_->{TYPE} eq "IMPORT") && HeaderImport(@{$_->{PATHS}});
		($_->{TYPE} eq "INCLUDE") && HeaderInclude(@{$_->{PATHS}});
	}

	pidl "#endif /* _PIDL_HEADER_$ifacename */\n";

	return $res;
}

sub GenerateStructEnv($$)
{
	my ($x, $v) = @_;
	my %env;

	foreach my $e (@{$x->{ELEMENTS}}) {
		$env{$e->{NAME}} = "$v->$e->{NAME}";
	}

	$env{"this"} = $v;

	return \%env;
}

sub EnvSubstituteValue($$)
{
	my ($env,$s) = @_;

	# Substitute the value() values in the env
	foreach my $e (@{$s->{ELEMENTS}}) {
		next unless (defined(my $v = has_property($e, "value")));

		$env->{$e->{NAME}} = ParseExpr($v, $env, $e);
	}

	return $env;
}

sub GenerateFunctionInEnv($;$)
{
	my ($fn, $base) = @_;
	my %env;

	$base = "r->" unless defined($base);

	foreach my $e (@{$fn->{ELEMENTS}}) {
		if (grep (/in/, @{$e->{DIRECTION}})) {
			$env{$e->{NAME}} = $base."in.$e->{NAME}";
		}
	}

	return \%env;
}

sub GenerateFunctionOutEnv($;$)
{
	my ($fn, $base) = @_;
	my %env;

	$base = "r->" unless defined($base);

	foreach my $e (@{$fn->{ELEMENTS}}) {
		if (grep (/out/, @{$e->{DIRECTION}})) {
			$env{$e->{NAME}} = $base."out.$e->{NAME}";
		} elsif (grep (/in/, @{$e->{DIRECTION}})) {
			$env{$e->{NAME}} = $base."in.$e->{NAME}";
		}
	}

	return \%env;
}

1;