pidl/lib/Parse/Pidl/NDR.pm

   1 ###################################################
   2 # Samba4 NDR info tree generator
   3 # Copyright tridge@samba.org 2000-2003
   4 # Copyright tpot@samba.org 2001
   5 # Copyright jelmer@samba.org 2004-2006
   6 # released under the GNU GPL
   7
   8 =pod
   9
  10 =head1 NAME
  11
  12 Parse::Pidl::NDR - NDR parsing information generator
  13
  14 =head1 DESCRIPTION
  15
  16 Return a table describing the order in which the parts of an element
  17 should be parsed
  18 Possible level types:
  19  - POINTER
  20  - ARRAY
  21  - SUBCONTEXT
  22  - SWITCH
  23  - DATA
  24
  25 =head1 AUTHOR
  26
  27 Jelmer Vernooij <jelmer@samba.org>
  28
  29 =cut
  30
  31 package Parse::Pidl::NDR;
  32
  33 require Exporter;
  34 use vars qw($VERSION);
  35 $VERSION = '0.01';
  36 @ISA = qw(Exporter);
  37 @EXPORT = qw(GetPrevLevel GetNextLevel ContainsDeferred ContainsString);
  38 @EXPORT_OK = qw(GetElementLevelTable ParseElement ValidElement align_type mapToScalar ParseType can_contain_deferred is_charset_array);
  39
  40 use strict;
  41 use Parse::Pidl qw(warning fatal);
  42 use Parse::Pidl::Typelist qw(hasType getType expandAlias);
  43 use Parse::Pidl::Util qw(has_property property_matches);
  44
  45 # Alignment of the built-in scalar types
  46 my $scalar_alignment = {
  47         'void' => 0,
  48         'char' => 1,
  49         'int8' => 1,
  50         'uint8' => 1,
  51         'int16' => 2,
  52         'uint16' => 2,
  53         'int32' => 4,
  54         'uint32' => 4,
  55         'hyper' => 8,
  56         'double' => 8,
  57         'pointer' => 8,
  58         'dlong' => 4,
  59         'udlong' => 4,
  60         'udlongr' => 4,
  61         'DATA_BLOB' => 4,
  62         'string' => 4,
  63         'string_array' => 4, #???
  64         'time_t' => 4,
  65         'NTTIME' => 4,
  66         'NTTIME_1sec' => 4,
  67         'NTTIME_hyper' => 8,
  68         'WERROR' => 4,
  69         'NTSTATUS' => 4,
  70         'COMRESULT' => 4,
  71         'nbt_string' => 4,
  72         'wrepl_nbt_name' => 4,
  73         'ipv4address' => 4
  74 };
  75
  76 sub GetElementLevelTable($$)
  77 {
  78         my ($e, $pointer_default) = @_;
  79
  80         my $order = [];
  81         my $is_deferred = 0;
  82         my @bracket_array = ();
  83         my @length_is = ();
  84         my @size_is = ();
  85         my $pointer_idx = 0;
  86
  87         if (has_property($e, "size_is")) {
  88                 @size_is = split /,/, has_property($e, "size_is");
  89         }
  90
  91         if (has_property($e, "length_is")) {
  92                 @length_is = split /,/, has_property($e, "length_is");
  93         }
  94
  95         if (defined($e->{ARRAY_LEN})) {
  96                 @bracket_array = @{$e->{ARRAY_LEN}};
  97         }
  98
  99         if (has_property($e, "out")) {
 100                 my $needptrs = 1;
 101
 102                 if (has_property($e, "string")) { $needptrs++; }
 103                 if ($#bracket_array >= 0) { $needptrs = 0; }
 104
 105                 warning($e, "[out] argument `$e->{NAME}' not a pointer") if ($needptrs > $e->{POINTERS});
 106         }
 107
 108         # Parse the [][][][] style array stuff
 109         for my $i (0 .. $#bracket_array) {
 110                 my $d = $bracket_array[$#bracket_array - $i];
 111                 my $size = $d;
 112                 my $length = $d;
 113                 my $is_surrounding = 0;
 114                 my $is_varying = 0;
 115                 my $is_conformant = 0;
 116                 my $is_string = 0;
 117                 my $is_fixed = 0;
 118                 my $is_inline = 0;
 119
 120                 if ($d eq "*") {
 121                         $is_conformant = 1;
 122                         if ($size = shift @size_is) {
 123                         } elsif ((scalar(@size_is) == 0) and has_property($e, "string")) {
 124                                 $is_string = 1;
 125                                 delete($e->{PROPERTIES}->{string});
 126                         } else {
 127                                 fatal($e, "Must specify size_is() for conformant array!")
 128                         }
 129
 130                         if (($length = shift @length_is) or $is_string) {
 131                                 $is_varying = 1;
 132                         } else {
 133                                 $length = $size;
 134                         }
 135
 136                         if ($e == $e->{PARENT}->{ELEMENTS}[-1]
 137                                 and $e->{PARENT}->{TYPE} ne "FUNCTION") {
 138                                 $is_surrounding = 1;
 139                         }
 140                 }
 141
 142                 $is_fixed = 1 if (not $is_conformant and Parse::Pidl::Util::is_constant($size));
 143                 $is_inline = 1 if (not $is_conformant and not Parse::Pidl::Util::is_constant($size));
 144
 145                 push (@$order, {
 146                         TYPE => "ARRAY",
 147                         SIZE_IS => $size,
 148                         LENGTH_IS => $length,
 149                         IS_DEFERRED => $is_deferred,
 150                         IS_SURROUNDING => $is_surrounding,
 151                         IS_ZERO_TERMINATED => $is_string,
 152                         IS_VARYING => $is_varying,
 153                         IS_CONFORMANT => $is_conformant,
 154                         IS_FIXED => $is_fixed,
 155                         IS_INLINE => $is_inline
 156                 });
 157         }
 158
 159         # Next, all the pointers
 160         foreach my $i (1..$e->{POINTERS}) {
 161                 my $level = "EMBEDDED";
 162                 # Top level "ref" pointers do not have a referrent identifier
 163                 $level = "TOP" if ($i == 1 and $e->{PARENT}->{TYPE} eq "FUNCTION");
 164
 165                 my $pt;
 166                 #
 167                 # Only the first level gets the pointer type from the
 168                 # pointer property, the others get them from
 169                 # the pointer_default() interface property
 170                 #
 171                 # see http://msdn2.microsoft.com/en-us/library/aa378984(VS.85).aspx
 172                 # (Here they talk about the rightmost pointer, but testing shows
 173                 #  they mean the leftmost pointer.)
 174                 #
 175                 # --metze
 176                 #
 177                 $pt = pointer_type($e);
 178                 if ($i > 1) {
 179                         $is_deferred = 1 if ($pt ne "ref" and $e->{PARENT}->{TYPE} eq "FUNCTION");
 180                         $pt = $pointer_default;
 181                 }
 182
 183                 push (@$order, {
 184                         TYPE => "POINTER",
 185                         POINTER_TYPE => $pt,
 186                         POINTER_INDEX => $pointer_idx,
 187                         IS_DEFERRED => "$is_deferred",
 188                         LEVEL => $level
 189                 });
 190
 191                 warning($e, "top-level \[out\] pointer `$e->{NAME}' is not a \[ref\] pointer")
 192                         if ($i == 1 and $pt ne "ref" and
 193                                 $e->{PARENT}->{TYPE} eq "FUNCTION" and
 194                                 not has_property($e, "in"));
 195
 196                 $pointer_idx++;
 197
 198                 # everything that follows will be deferred
 199                 $is_deferred = 1 if ($level ne "TOP");
 200
 201                 my $array_size = shift @size_is;
 202                 my $array_length;
 203                 my $is_varying;
 204                 my $is_conformant;
 205                 my $is_string = 0;
 206                 if ($array_size) {
 207                         $is_conformant = 1;
 208                         if ($array_length = shift @length_is) {
 209                                 $is_varying = 1;
 210                         } else {
 211                                 $array_length = $array_size;
 212                                 $is_varying =0;
 213                         }
 214                 }
 215
 216                 if (scalar(@size_is) == 0 and has_property($e, "string") and
 217                     $i == $e->{POINTERS}) {
 218                         $is_string = 1;
 219                         $is_varying = $is_conformant = has_property($e, "noheader")?0:1;
 220                         delete($e->{PROPERTIES}->{string});
 221                 }
 222
 223                 if ($array_size or $is_string) {
 224                         push (@$order, {
 225                                 TYPE => "ARRAY",
 226                                 SIZE_IS => $array_size,
 227                                 LENGTH_IS => $array_length,
 228                                 IS_DEFERRED => $is_deferred,
 229                                 IS_SURROUNDING => 0,
 230                                 IS_ZERO_TERMINATED => $is_string,
 231                                 IS_VARYING => $is_varying,
 232                                 IS_CONFORMANT => $is_conformant,
 233                                 IS_FIXED => 0,
 234                                 IS_INLINE => 0
 235                         });
 236
 237                         $is_deferred = 0;
 238                 }
 239         }
 240
 241         if (defined(has_property($e, "subcontext"))) {
 242                 my $hdr_size = has_property($e, "subcontext");
 243                 my $subsize = has_property($e, "subcontext_size");
 244                 if (not defined($subsize)) {
 245                         $subsize = -1;
 246                 }
 247
 248                 push (@$order, {
 249                         TYPE => "SUBCONTEXT",
 250                         HEADER_SIZE => $hdr_size,
 251                         SUBCONTEXT_SIZE => $subsize,
 252                         IS_DEFERRED => $is_deferred,
 253                         COMPRESSION => has_property($e, "compression"),
 254                 });
 255         }
 256
 257         if (my $switch = has_property($e, "switch_is")) {
 258                 push (@$order, {
 259                         TYPE => "SWITCH",
 260                         SWITCH_IS => $switch,
 261                         IS_DEFERRED => $is_deferred
 262                 });
 263         }
 264
 265         if (scalar(@size_is) > 0) {
 266                 fatal($e, "size_is() on non-array element");
 267         }
 268
 269         if (scalar(@length_is) > 0) {
 270                 fatal($e, "length_is() on non-array element");
 271         }
 272
 273         if (has_property($e, "string")) {
 274                 fatal($e, "string() attribute on non-array element");
 275         }
 276
 277         push (@$order, {
 278                 TYPE => "DATA",
 279                 DATA_TYPE => $e->{TYPE},
 280                 IS_DEFERRED => $is_deferred,
 281                 CONTAINS_DEFERRED => can_contain_deferred($e->{TYPE}),
 282                 IS_SURROUNDING => 0 #FIXME
 283         });
 284
 285         my $i = 0;
 286         foreach (@$order) { $_->{LEVEL_INDEX} = $i; $i+=1; }
 287
 288         return $order;
 289 }
 290
 291 sub GetTypedefLevelTable($$$)
 292 {
 293         my ($e, $data, $pointer_default) = @_;
 294
 295         my $order = [];
 296
 297         push (@$order, {
 298                 TYPE => "TYPEDEF"
 299         });
 300
 301         my $i = 0;
 302         foreach (@$order) { $_->{LEVEL_INDEX} = $i; $i+=1; }
 303
 304         return $order;
 305 }
 306
 307 #####################################################################
 308 # see if a type contains any deferred data
 309 sub can_contain_deferred($)
 310 {
 311         sub can_contain_deferred($);
 312         my ($type) = @_;
 313
 314         return 1 unless (hasType($type)); # assume the worst
 315
 316         $type = getType($type);
 317
 318         return 0 if (Parse::Pidl::Typelist::is_scalar($type));
 319
 320         return can_contain_deferred($type->{DATA}) if ($type->{TYPE} eq "TYPEDEF");
 321
 322         return 0 unless defined($type->{ELEMENTS});
 323
 324         foreach (@{$type->{ELEMENTS}}) {
 325                 return 1 if ($_->{POINTERS});
 326                 return 1 if (can_contain_deferred ($_->{TYPE}));
 327         }
 328
 329         return 0;
 330 }
 331
 332 sub pointer_type($)
 333 {
 334         my $e = shift;
 335
 336         return undef unless $e->{POINTERS};
 337
 338         return "ref" if (has_property($e, "ref"));
 339         return "full" if (has_property($e, "ptr"));
 340         return "sptr" if (has_property($e, "sptr"));
 341         return "unique" if (has_property($e, "unique"));
 342         return "relative" if (has_property($e, "relative"));
 343         return "ignore" if (has_property($e, "ignore"));
 344
 345         return undef;
 346 }
 347
 348 #####################################################################
 349 # work out the correct alignment for a structure or union
 350 sub find_largest_alignment($)
 351 {
 352         my $s = shift;
 353
 354         my $align = 1;
 355         for my $e (@{$s->{ELEMENTS}}) {
 356                 my $a = 1;
 357
 358                 if ($e->{POINTERS}) {
 359                         $a = 4;
 360                 } elsif (has_property($e, "subcontext")) {
 361                         $a = 1;
 362                 } elsif (has_property($e, "transmit_as")) {
 363                         $a = align_type($e->{PROPERTIES}->{transmit_as});
 364                 } else {
 365                         $a = align_type($e->{TYPE});
 366                 }
 367
 368                 $align = $a if ($align < $a);
 369         }
 370
 371         return $align;
 372 }
 373
 374 #####################################################################
 375 # align a type
 376 sub align_type($)
 377 {
 378         sub align_type($);
 379         my ($e) = @_;
 380
 381         if (ref($e) eq "HASH" and $e->{TYPE} eq "SCALAR") {
 382                 return $scalar_alignment->{$e->{NAME}};
 383         }
 384
 385         return 0 if ($e eq "EMPTY");
 386
 387         unless (hasType($e)) {
 388             # it must be an external type - all we can do is guess
 389                 # warning($e, "assuming alignment of unknown type '$e' is 4");
 390             return 4;
 391         }
 392
 393         my $dt = getType($e);
 394
 395         if ($dt->{TYPE} eq "TYPEDEF") {
 396                 return align_type($dt->{DATA});
 397         } elsif ($dt->{TYPE} eq "ENUM") {
 398                 return align_type(Parse::Pidl::Typelist::enum_type_fn($dt));
 399         } elsif ($dt->{TYPE} eq "BITMAP") {
 400                 return align_type(Parse::Pidl::Typelist::bitmap_type_fn($dt));
 401         } elsif (($dt->{TYPE} eq "STRUCT") or ($dt->{TYPE} eq "UNION")) {
 402                 # Struct/union without body: assume 4
 403                 return 4 unless (defined($dt->{ELEMENTS}));
 404                 return find_largest_alignment($dt);
 405         }
 406
 407         die("Unknown data type type $dt->{TYPE}");
 408 }
 409
 410 sub ParseElement($$)
 411 {
 412         my ($e, $pointer_default) = @_;
 413
 414         $e->{TYPE} = expandAlias($e->{TYPE});
 415
 416         if (ref($e->{TYPE}) eq "HASH") {
 417                 $e->{TYPE} = ParseType($e->{TYPE}, $pointer_default);
 418         }
 419
 420         return {
 421                 NAME => $e->{NAME},
 422                 TYPE => $e->{TYPE},
 423                 PROPERTIES => $e->{PROPERTIES},
 424                 LEVELS => GetElementLevelTable($e, $pointer_default),
 425                 REPRESENTATION_TYPE => ($e->{PROPERTIES}->{represent_as} or $e->{TYPE}),
 426                 ALIGN => align_type($e->{TYPE}),
 427                 ORIGINAL => $e
 428         };
 429 }
 430
 431 sub ParseStruct($$)
 432 {
 433         my ($struct, $pointer_default) = @_;
 434         my @elements = ();
 435         my $surrounding = undef;
 436
 437         return {
 438                 TYPE => "STRUCT",
 439                 NAME => $struct->{NAME},
 440                 SURROUNDING_ELEMENT => undef,
 441                 ELEMENTS => undef,
 442                 PROPERTIES => $struct->{PROPERTIES},
 443                 ORIGINAL => $struct,
 444                 ALIGN => undef
 445         } unless defined($struct->{ELEMENTS});
 446
 447         CheckPointerTypes($struct, $pointer_default);
 448
 449         foreach my $x (@{$struct->{ELEMENTS}})
 450         {
 451                 my $e = ParseElement($x, $pointer_default);
 452                 if ($x != $struct->{ELEMENTS}[-1] and
 453                         $e->{LEVELS}[0]->{IS_SURROUNDING}) {
 454                         fatal($x, "conformant member not at end of struct");
 455                 }
 456                 push @elements, $e;
 457         }
 458
 459         my $e = $elements[-1];
 460         if (defined($e) and defined($e->{LEVELS}[0]->{IS_SURROUNDING}) and
 461                 $e->{LEVELS}[0]->{IS_SURROUNDING}) {
 462                 $surrounding = $e;
 463         }
 464
 465         if (defined $e->{TYPE} && $e->{TYPE} eq "string"
 466             &&  property_matches($e, "flag", ".*LIBNDR_FLAG_STR_CONFORMANT.*")) {
 467                 $surrounding = $struct->{ELEMENTS}[-1];
 468         }
 469
 470         my $align = undef;
 471         if ($struct->{NAME}) {
 472                 $align = align_type($struct->{NAME});
 473         }
 474
 475         return {
 476                 TYPE => "STRUCT",
 477                 NAME => $struct->{NAME},
 478                 SURROUNDING_ELEMENT => $surrounding,
 479                 ELEMENTS => \@elements,
 480                 PROPERTIES => $struct->{PROPERTIES},
 481                 ORIGINAL => $struct,
 482                 ALIGN => $align
 483         };
 484 }
 485
 486 sub ParseUnion($$)
 487 {
 488         my ($e, $pointer_default) = @_;
 489         my @elements = ();
 490         my $hasdefault = 0;
 491         my $switch_type = has_property($e, "switch_type");
 492         unless (defined($switch_type)) { $switch_type = "uint32"; }
 493         if (has_property($e, "nodiscriminant")) { $switch_type = undef; }
 494
 495         return {
 496                 TYPE => "UNION",
 497                 NAME => $e->{NAME},
 498                 SWITCH_TYPE => $switch_type,
 499                 ELEMENTS => undef,
 500                 PROPERTIES => $e->{PROPERTIES},
 501                 HAS_DEFAULT => $hasdefault,
 502                 ORIGINAL => $e
 503         } unless defined($e->{ELEMENTS});
 504
 505         CheckPointerTypes($e, $pointer_default);
 506
 507         foreach my $x (@{$e->{ELEMENTS}})
 508         {
 509                 my $t;
 510                 if ($x->{TYPE} eq "EMPTY") {
 511                         $t = { TYPE => "EMPTY" };
 512                 } else {
 513                         $t = ParseElement($x, $pointer_default);
 514                 }
 515                 if (has_property($x, "default")) {
 516                         $t->{CASE} = "default";
 517                         $hasdefault = 1;
 518                 } elsif (defined($x->{PROPERTIES}->{case})) {
 519                         $t->{CASE} = "case $x->{PROPERTIES}->{case}";
 520                 } else {
 521                         die("Union element $x->{NAME} has neither default nor case property");
 522                 }
 523                 push @elements, $t;
 524         }
 525
 526         return {
 527                 TYPE => "UNION",
 528                 NAME => $e->{NAME},
 529                 SWITCH_TYPE => $switch_type,
 530                 ELEMENTS => \@elements,
 531                 PROPERTIES => $e->{PROPERTIES},
 532                 HAS_DEFAULT => $hasdefault,
 533                 ORIGINAL => $e
 534         };
 535 }
 536
 537 sub ParseEnum($$)
 538 {
 539         my ($e, $pointer_default) = @_;
 540
 541         return {
 542                 TYPE => "ENUM",
 543                 NAME => $e->{NAME},
 544                 BASE_TYPE => Parse::Pidl::Typelist::enum_type_fn($e),
 545                 ELEMENTS => $e->{ELEMENTS},
 546                 PROPERTIES => $e->{PROPERTIES},
 547                 ORIGINAL => $e
 548         };
 549 }
 550
 551 sub ParseBitmap($$)
 552 {
 553         my ($e, $pointer_default) = @_;
 554
 555         return {
 556                 TYPE => "BITMAP",
 557                 NAME => $e->{NAME},
 558                 BASE_TYPE => Parse::Pidl::Typelist::bitmap_type_fn($e),
 559                 ELEMENTS => $e->{ELEMENTS},
 560                 PROPERTIES => $e->{PROPERTIES},
 561                 ORIGINAL => $e
 562         };
 563 }
 564
 565 sub ParseType($$)
 566 {
 567         my ($d, $pointer_default) = @_;
 568
 569         my $data = {
 570                 STRUCT => \&ParseStruct,
 571                 UNION => \&ParseUnion,
 572                 ENUM => \&ParseEnum,
 573                 BITMAP => \&ParseBitmap,
 574                 TYPEDEF => \&ParseTypedef,
 575         }->{$d->{TYPE}}->($d, $pointer_default);
 576
 577         return $data;
 578 }
 579
 580 sub ParseTypedef($$)
 581 {
 582         my ($d, $pointer_default) = @_;
 583
 584         if (defined($d->{DATA}->{PROPERTIES}) && !defined($d->{PROPERTIES})) {
 585                 $d->{PROPERTIES} = $d->{DATA}->{PROPERTIES};
 586         }
 587
 588         my $data = ParseType($d->{DATA}, $pointer_default);
 589         $data->{ALIGN} = align_type($d->{NAME});
 590
 591         return {
 592                 NAME => $d->{NAME},
 593                 TYPE => $d->{TYPE},
 594                 PROPERTIES => $d->{PROPERTIES},
 595                 LEVELS => GetTypedefLevelTable($d, $data, $pointer_default),
 596                 DATA => $data,
 597                 ORIGINAL => $d
 598         };
 599 }
 600
 601 sub ParseConst($$)
 602 {
 603         my ($ndr,$d) = @_;
 604
 605         return $d;
 606 }
 607
 608 sub ParseFunction($$$)
 609 {
 610         my ($ndr,$d,$opnum) = @_;
 611         my @elements = ();
 612         my $rettype = undef;
 613         my $thisopnum = undef;
 614
 615         CheckPointerTypes($d, "ref");
 616
 617         if (not defined($d->{PROPERTIES}{noopnum})) {
 618                 $thisopnum = ${$opnum};
 619                 ${$opnum}++;
 620         }
 621
 622         foreach my $x (@{$d->{ELEMENTS}}) {
 623                 my $e = ParseElement($x, $ndr->{PROPERTIES}->{pointer_default});
 624                 push (@{$e->{DIRECTION}}, "in") if (has_property($x, "in"));
 625                 push (@{$e->{DIRECTION}}, "out") if (has_property($x, "out"));
 626
 627                 push (@elements, $e);
 628         }
 629
 630         if ($d->{RETURN_TYPE} ne "void") {
 631                 $rettype = expandAlias($d->{RETURN_TYPE});
 632         }
 633
 634         my $async = 0;
 635         if (has_property($d, "async")) { $async = 1; }
 636
 637         return {
 638                         NAME => $d->{NAME},
 639                         TYPE => "FUNCTION",
 640                         OPNUM => $thisopnum,
 641                         ASYNC => $async,
 642                         RETURN_TYPE => $rettype,
 643                         PROPERTIES => $d->{PROPERTIES},
 644                         ELEMENTS => \@elements,
 645                         ORIGINAL => $d
 646                 };
 647 }
 648
 649 sub CheckPointerTypes($$)
 650 {
 651         my ($s,$default) = @_;
 652
 653         return unless defined($s->{ELEMENTS});
 654
 655         foreach my $e (@{$s->{ELEMENTS}}) {
 656                 if ($e->{POINTERS} and not defined(pointer_type($e))) {
 657                         $e->{PROPERTIES}->{$default} = '1';
 658                 }
 659         }
 660 }
 661
 662 sub FindNestedTypes($$)
 663 {
 664         sub FindNestedTypes($$);
 665         my ($l, $t) = @_;
 666
 667         return unless defined($t->{ELEMENTS});
 668         return if ($t->{TYPE} eq "ENUM");
 669         return if ($t->{TYPE} eq "BITMAP");
 670
 671         foreach (@{$t->{ELEMENTS}}) {
 672                 if (ref($_->{TYPE}) eq "HASH") {
 673                         push (@$l, $_->{TYPE}) if (defined($_->{TYPE}->{NAME}));
 674                         FindNestedTypes($l, $_->{TYPE});
 675                 }
 676         }
 677 }
 678
 679 sub ParseInterface($)
 680 {
 681         my $idl = shift;
 682         my @types = ();
 683         my @consts = ();
 684         my @functions = ();
 685         my @endpoints;
 686         my $opnum = 0;
 687         my $version;
 688
 689         if (not has_property($idl, "pointer_default")) {
 690                 # MIDL defaults to "ptr" in DCE compatible mode (/osf)
 691                 # and "unique" in Microsoft Extensions mode (default)
 692                 $idl->{PROPERTIES}->{pointer_default} = "unique";
 693         }
 694
 695         foreach my $d (@{$idl->{DATA}}) {
 696                 if ($d->{TYPE} eq "FUNCTION") {
 697                         push (@functions, ParseFunction($idl, $d, \$opnum));
 698                 } elsif ($d->{TYPE} eq "CONST") {
 699                         push (@consts, ParseConst($idl, $d));
 700                 } else {
 701                         push (@types, ParseType($d, $idl->{PROPERTIES}->{pointer_default}));
 702                         FindNestedTypes(\@types, $d);
 703                 }
 704         }
 705
 706         $version = "0.0";
 707
 708         if(defined $idl->{PROPERTIES}->{version}) {
 709                 my @if_version = split(/\./, $idl->{PROPERTIES}->{version});
 710                 if ($if_version[0] == $idl->{PROPERTIES}->{version}) {
 711                                 $version = $idl->{PROPERTIES}->{version};
 712                 } else {
 713                                 $version = $if_version[1] << 16 | $if_version[0];
 714                 }
 715         }
 716
 717         # If no endpoint is set, default to the interface name as a named pipe
 718         if (!defined $idl->{PROPERTIES}->{endpoint}) {
 719                 push @endpoints, "\"ncacn_np:[\\\\pipe\\\\" . $idl->{NAME} . "]\"";
 720         } else {
 721                 @endpoints = split /,/, $idl->{PROPERTIES}->{endpoint};
 722         }
 723
 724         return {
 725                 NAME => $idl->{NAME},
 726                 UUID => lc(has_property($idl, "uuid")),
 727                 VERSION => $version,
 728                 TYPE => "INTERFACE",
 729                 PROPERTIES => $idl->{PROPERTIES},
 730                 FUNCTIONS => \@functions,
 731                 CONSTS => \@consts,
 732                 TYPES => \@types,
 733                 ENDPOINTS => \@endpoints
 734         };
 735 }
 736
 737 # Convert a IDL tree to a NDR tree
 738 # Gives a result tree describing all that's necessary for easily generating
 739 # NDR parsers / generators
 740 sub Parse($)
 741 {
 742         my $idl = shift;
 743
 744         return undef unless (defined($idl));
 745
 746         Parse::Pidl::NDR::Validate($idl);
 747
 748         my @ndr = ();
 749
 750         foreach (@{$idl}) {
 751                 ($_->{TYPE} eq "CPP_QUOTE") && push(@ndr, $_);
 752                 ($_->{TYPE} eq "INTERFACE") && push(@ndr, ParseInterface($_));
 753                 ($_->{TYPE} eq "IMPORT") && push(@ndr, $_);
 754         }
 755
 756         return \@ndr;
 757 }
 758
 759 sub GetNextLevel($$)
 760 {
 761         my $e = shift;
 762         my $fl = shift;
 763
 764         my $seen = 0;
 765
 766         foreach my $l (@{$e->{LEVELS}}) {
 767                 return $l if ($seen);
 768                 ($seen = 1) if ($l == $fl);
 769         }
 770
 771         return undef;
 772 }
 773
 774 sub GetPrevLevel($$)
 775 {
 776         my ($e,$fl) = @_;
 777         my $prev = undef;
 778
 779         foreach my $l (@{$e->{LEVELS}}) {
 780                 (return $prev) if ($l == $fl);
 781                 $prev = $l;
 782         }
 783
 784         return undef;
 785 }
 786
 787 sub ContainsString($)
 788 {
 789         my ($e) = @_;
 790
 791         foreach my $l (@{$e->{LEVELS}}) {
 792                 return 1 if ($l->{TYPE} eq "ARRAY" and $l->{IS_ZERO_TERMINATED});
 793         }
 794
 795         return 0;
 796 }
 797
 798 sub ContainsDeferred($$)
 799 {
 800         my ($e,$l) = @_;
 801
 802         return 1 if ($l->{CONTAINS_DEFERRED});
 803
 804         while ($l = GetNextLevel($e,$l))
 805         {
 806                 return 1 if ($l->{IS_DEFERRED});
 807                 return 1 if ($l->{CONTAINS_DEFERRED});
 808         }
 809
 810         return 0;
 811 }
 812
 813 sub el_name($)
 814 {
 815         my $e = shift;
 816         my $name = "<ANONYMOUS>";
 817
 818         $name = $e->{NAME} if defined($e->{NAME});
 819
 820         if (defined($e->{PARENT}) and defined($e->{PARENT}->{NAME})) {
 821                 return "$e->{PARENT}->{NAME}.$name";
 822         }
 823
 824         if (defined($e->{PARENT}) and
 825             defined($e->{PARENT}->{PARENT}) and
 826             defined($e->{PARENT}->{PARENT}->{NAME})) {
 827                 return "$e->{PARENT}->{PARENT}->{NAME}.$name";
 828         }
 829
 830         return $name;
 831 }
 832
 833 ###################################
 834 # find a sibling var in a structure
 835 sub find_sibling($$)
 836 {
 837         my($e,$name) = @_;
 838         my($fn) = $e->{PARENT};
 839
 840         if ($name =~ /\*(.*)/) {
 841                 $name = $1;
 842         }
 843
 844         for my $e2 (@{$fn->{ELEMENTS}}) {
 845                 return $e2 if ($e2->{NAME} eq $name);
 846         }
 847
 848         return undef;
 849 }
 850
 851 my %property_list = (
 852         # interface
 853         "helpstring"            => ["INTERFACE", "FUNCTION"],
 854         "version"               => ["INTERFACE"],
 855         "uuid"                  => ["INTERFACE"],
 856         "endpoint"              => ["INTERFACE"],
 857         "pointer_default"       => ["INTERFACE"],
 858         "helper"                => ["INTERFACE"],
 859         "pyhelper"              => ["INTERFACE"],
 860         "authservice"           => ["INTERFACE"],
 861         "restricted"    => ["INTERFACE"],
 862
 863         # dcom
 864         "object"                => ["INTERFACE"],
 865         "local"                 => ["INTERFACE", "FUNCTION"],
 866         "iid_is"                => ["ELEMENT"],
 867         "call_as"               => ["FUNCTION"],
 868         "idempotent"            => ["FUNCTION"],
 869
 870         # function
 871         "noopnum"               => ["FUNCTION"],
 872         "in"                    => ["ELEMENT"],
 873         "out"                   => ["ELEMENT"],
 874         "async"                 => ["FUNCTION"],
 875
 876         # pointer
 877         "ref"                   => ["ELEMENT"],
 878         "ptr"                   => ["ELEMENT"],
 879         "unique"                => ["ELEMENT"],
 880         "ignore"                => ["ELEMENT"],
 881         "relative"              => ["ELEMENT"],
 882         "null_is_ffffffff" => ["ELEMENT"],
 883         "relative_base"         => ["TYPEDEF", "STRUCT", "UNION"],
 884
 885         "gensize"               => ["TYPEDEF", "STRUCT", "UNION"],
 886         "value"                 => ["ELEMENT"],
 887         "flag"                  => ["ELEMENT", "TYPEDEF", "STRUCT", "UNION", "ENUM", "BITMAP"],
 888
 889         # generic
 890         "public"                => ["FUNCTION", "TYPEDEF", "STRUCT", "UNION", "ENUM", "BITMAP"],
 891         "nopush"                => ["FUNCTION", "TYPEDEF", "STRUCT", "UNION", "ENUM", "BITMAP"],
 892         "nopull"                => ["FUNCTION", "TYPEDEF", "STRUCT", "UNION", "ENUM", "BITMAP"],
 893         "nosize"                => ["FUNCTION", "TYPEDEF", "STRUCT", "UNION", "ENUM", "BITMAP"],
 894         "noprint"               => ["FUNCTION", "TYPEDEF", "STRUCT", "UNION", "ENUM", "BITMAP", "ELEMENT"],
 895         "todo"                  => ["FUNCTION"],
 896
 897         # union
 898         "switch_is"             => ["ELEMENT"],
 899         "switch_type"           => ["ELEMENT", "UNION"],
 900         "nodiscriminant"        => ["UNION"],
 901         "case"                  => ["ELEMENT"],
 902         "default"               => ["ELEMENT"],
 903
 904         "represent_as"          => ["ELEMENT"],
 905         "transmit_as"           => ["ELEMENT"],
 906
 907         # subcontext
 908         "subcontext"            => ["ELEMENT"],
 909         "subcontext_size"       => ["ELEMENT"],
 910         "compression"           => ["ELEMENT"],
 911
 912         # enum
 913         "enum8bit"              => ["ENUM"],
 914         "enum16bit"             => ["ENUM"],
 915         "v1_enum"               => ["ENUM"],
 916
 917         # bitmap
 918         "bitmap8bit"            => ["BITMAP"],
 919         "bitmap16bit"           => ["BITMAP"],
 920         "bitmap32bit"           => ["BITMAP"],
 921         "bitmap64bit"           => ["BITMAP"],
 922
 923         # array
 924         "range"                 => ["ELEMENT"],
 925         "size_is"               => ["ELEMENT"],
 926         "string"                => ["ELEMENT"],
 927         "noheader"              => ["ELEMENT"],
 928         "charset"               => ["ELEMENT"],
 929         "length_is"             => ["ELEMENT"],
 930 );
 931
 932 #####################################################################
 933 # check for unknown properties
 934 sub ValidProperties($$)
 935 {
 936         my ($e,$t) = @_;
 937
 938         return unless defined $e->{PROPERTIES};
 939
 940         foreach my $key (keys %{$e->{PROPERTIES}}) {
 941                 warning($e, el_name($e) . ": unknown property '$key'")
 942                         unless defined($property_list{$key});
 943
 944                 fatal($e, el_name($e) . ": property '$key' not allowed on '$t'")
 945                         unless grep(/^$t$/, @{$property_list{$key}});
 946         }
 947 }
 948
 949 sub mapToScalar($)
 950 {
 951         sub mapToScalar($);
 952         my $t = shift;
 953         return $t->{NAME} if (ref($t) eq "HASH" and $t->{TYPE} eq "SCALAR");
 954         my $ti = getType($t);
 955
 956         if (not defined ($ti)) {
 957                 return undef;
 958         } elsif ($ti->{TYPE} eq "TYPEDEF") {
 959                 return mapToScalar($ti->{DATA});
 960         } elsif ($ti->{TYPE} eq "ENUM") {
 961                 return Parse::Pidl::Typelist::enum_type_fn($ti);
 962         } elsif ($ti->{TYPE} eq "BITMAP") {
 963                 return Parse::Pidl::Typelist::bitmap_type_fn($ti);
 964         }
 965
 966         return undef;
 967 }
 968
 969 #####################################################################
 970 # validate an element
 971 sub ValidElement($)
 972 {
 973         my $e = shift;
 974
 975         ValidProperties($e,"ELEMENT");
 976
 977         # Check whether switches are used correctly.
 978         if (my $switch = has_property($e, "switch_is")) {
 979                 my $e2 = find_sibling($e, $switch);
 980                 my $type = getType($e->{TYPE});
 981
 982                 if (defined($type) and $type->{DATA}->{TYPE} ne "UNION") {
 983                         fatal($e, el_name($e) . ": switch_is() used on non-union type $e->{TYPE} which is a $type->{DATA}->{TYPE}");
 984                 }
 985
 986                 if (not has_property($type->{DATA}, "nodiscriminant") and defined($e2)) {
 987                         my $discriminator_type = has_property($type->{DATA}, "switch_type");
 988                         $discriminator_type = "uint32" unless defined ($discriminator_type);
 989
 990                         my $t1 = mapToScalar($discriminator_type);
 991
 992                         if (not defined($t1)) {
 993                                 fatal($e, el_name($e) . ": unable to map discriminator type '$discriminator_type' to scalar");
 994                         }
 995
 996                         my $t2 = mapToScalar($e2->{TYPE});
 997                         if (not defined($t2)) {
 998                                 fatal($e, el_name($e) . ": unable to map variable used for switch_is() to scalar");
 999                         }
1000
1001                         if ($t1 ne $t2) {
1002                                 warning($e, el_name($e) . ": switch_is() is of type $e2->{TYPE} ($t2), while discriminator type for union $type->{NAME} is $discriminator_type ($t1)");
1003                         }
1004                 }
1005         }
1006
1007         if (has_property($e, "subcontext") and has_property($e, "represent_as")) {
1008                 fatal($e, el_name($e) . " : subcontext() and represent_as() can not be used on the same element");
1009         }
1010
1011         if (has_property($e, "subcontext") and has_property($e, "transmit_as")) {
1012                 fatal($e, el_name($e) . " : subcontext() and transmit_as() can not be used on the same element");
1013         }
1014
1015         if (has_property($e, "represent_as") and has_property($e, "transmit_as")) {
1016                 fatal($e, el_name($e) . " : represent_as() and transmit_as() can not be used on the same element");
1017         }
1018
1019         if (has_property($e, "represent_as") and has_property($e, "value")) {
1020                 fatal($e, el_name($e) . " : represent_as() and value() can not be used on the same element");
1021         }
1022
1023         if (has_property($e, "subcontext")) {
1024                 warning($e, "subcontext() is deprecated. Use represent_as() or transmit_as() instead");
1025         }
1026
1027         if (defined (has_property($e, "subcontext_size")) and not defined(has_property($e, "subcontext"))) {
1028                 fatal($e, el_name($e) . " : subcontext_size() on non-subcontext element");
1029         }
1030
1031         if (defined (has_property($e, "compression")) and not defined(has_property($e, "subcontext"))) {
1032                 fatal($e, el_name($e) . " : compression() on non-subcontext element");
1033         }
1034
1035         if (!$e->{POINTERS} && (
1036                 has_property($e, "ptr") or
1037                 has_property($e, "unique") or
1038                 has_property($e, "relative") or
1039                 has_property($e, "ref"))) {
1040                 fatal($e, el_name($e) . " : pointer properties on non-pointer element\n");
1041         }
1042 }
1043
1044 #####################################################################
1045 # validate an enum
1046 sub ValidEnum($)
1047 {
1048         my ($enum) = @_;
1049
1050         ValidProperties($enum, "ENUM");
1051 }
1052
1053 #####################################################################
1054 # validate a bitmap
1055 sub ValidBitmap($)
1056 {
1057         my ($bitmap) = @_;
1058
1059         ValidProperties($bitmap, "BITMAP");
1060 }
1061
1062 #####################################################################
1063 # validate a struct
1064 sub ValidStruct($)
1065 {
1066         my($struct) = shift;
1067
1068         ValidProperties($struct, "STRUCT");
1069
1070         return unless defined($struct->{ELEMENTS});
1071
1072         foreach my $e (@{$struct->{ELEMENTS}}) {
1073                 $e->{PARENT} = $struct;
1074                 ValidElement($e);
1075         }
1076 }
1077
1078 #####################################################################
1079 # parse a union
1080 sub ValidUnion($)
1081 {
1082         my($union) = shift;
1083
1084         ValidProperties($union,"UNION");
1085
1086         if (has_property($union->{PARENT}, "nodiscriminant") and
1087                 has_property($union->{PARENT}, "switch_type")) {
1088                 fatal($union->{PARENT}, $union->{PARENT}->{NAME} . ": switch_type(" . $union->{PARENT}->{PROPERTIES}->{switch_type} . ") on union without discriminant");
1089         }
1090
1091         return unless defined($union->{ELEMENTS});
1092
1093         foreach my $e (@{$union->{ELEMENTS}}) {
1094                 $e->{PARENT} = $union;
1095
1096                 if (defined($e->{PROPERTIES}->{default}) and
1097                         defined($e->{PROPERTIES}->{case})) {
1098                         fatal($e, "Union member $e->{NAME} can not have both default and case properties!");
1099                 }
1100
1101                 unless (defined ($e->{PROPERTIES}->{default}) or
1102                                 defined ($e->{PROPERTIES}->{case})) {
1103                         fatal($e, "Union member $e->{NAME} must have default or case property");
1104                 }
1105
1106                 if (has_property($e, "ref")) {
1107                         fatal($e, el_name($e) . ": embedded ref pointers are not supported yet\n");
1108                 }
1109
1110
1111                 ValidElement($e);
1112         }
1113 }
1114
1115 #####################################################################
1116 # parse a typedef
1117 sub ValidTypedef($)
1118 {
1119         my($typedef) = shift;
1120         my $data = $typedef->{DATA};
1121
1122         ValidProperties($typedef, "TYPEDEF");
1123
1124         $data->{PARENT} = $typedef;
1125
1126         $data->{FILE} = $typedef->{FILE} unless defined($data->{FILE});
1127         $data->{LINE} = $typedef->{LINE} unless defined($data->{LINE});
1128
1129         ValidType($data) if (ref($data) eq "HASH");
1130 }
1131
1132 #####################################################################
1133 # validate a function
1134 sub ValidFunction($)
1135 {
1136         my($fn) = shift;
1137
1138         ValidProperties($fn,"FUNCTION");
1139
1140         foreach my $e (@{$fn->{ELEMENTS}}) {
1141                 $e->{PARENT} = $fn;
1142                 if (has_property($e, "ref") && !$e->{POINTERS}) {
1143                         fatal($e, "[ref] variables must be pointers ($fn->{NAME}/$e->{NAME})");
1144                 }
1145                 ValidElement($e);
1146         }
1147 }
1148
1149 #####################################################################
1150 # validate a type
1151 sub ValidType($)
1152 {
1153         my ($t) = @_;
1154
1155         {
1156                 TYPEDEF => \&ValidTypedef,
1157                 STRUCT => \&ValidStruct,
1158                 UNION => \&ValidUnion,
1159                 ENUM => \&ValidEnum,
1160                 BITMAP => \&ValidBitmap
1161         }->{$t->{TYPE}}->($t);
1162 }
1163
1164 #####################################################################
1165 # parse the interface definitions
1166 sub ValidInterface($)
1167 {
1168         my($interface) = shift;
1169         my($data) = $interface->{DATA};
1170
1171         if (has_property($interface, "helper")) {
1172                 warning($interface, "helper() is pidl-specific and deprecated. Use `include' instead");
1173         }
1174
1175         ValidProperties($interface,"INTERFACE");
1176
1177         if (has_property($interface, "pointer_default")) {
1178                 if (not grep (/$interface->{PROPERTIES}->{pointer_default}/,
1179                                         ("ref", "unique", "ptr"))) {
1180                         fatal($interface, "Unknown default pointer type `$interface->{PROPERTIES}->{pointer_default}'");
1181                 }
1182         }
1183
1184         if (has_property($interface, "object")) {
1185                 if (has_property($interface, "version") &&
1186                         $interface->{PROPERTIES}->{version} != 0) {
1187                         fatal($interface, "Object interfaces must have version 0.0 ($interface->{NAME})");
1188                 }
1189
1190                 if (!defined($interface->{BASE}) &&
1191                         not ($interface->{NAME} eq "IUnknown")) {
1192                         fatal($interface, "Object interfaces must all derive from IUnknown ($interface->{NAME})");
1193                 }
1194         }
1195
1196         foreach my $d (@{$data}) {
1197                 ($d->{TYPE} eq "FUNCTION") && ValidFunction($d);
1198                 ($d->{TYPE} eq "TYPEDEF" or
1199                  $d->{TYPE} eq "STRUCT" or
1200                  $d->{TYPE} eq "UNION" or
1201                  $d->{TYPE} eq "ENUM" or
1202                  $d->{TYPE} eq "BITMAP") && ValidType($d);
1203         }
1204
1205 }
1206
1207 #####################################################################
1208 # Validate an IDL structure
1209 sub Validate($)
1210 {
1211         my($idl) = shift;
1212
1213         foreach my $x (@{$idl}) {
1214                 ($x->{TYPE} eq "INTERFACE") &&
1215                     ValidInterface($x);
1216                 ($x->{TYPE} eq "IMPORTLIB") &&
1217                         fatal($x, "importlib() not supported");
1218         }
1219 }
1220
1221 sub is_charset_array($$)
1222 {
1223         my ($e,$l) = @_;
1224
1225         return 0 if ($l->{TYPE} ne "ARRAY");
1226
1227         my $nl = GetNextLevel($e,$l);
1228
1229         return 0 unless ($nl->{TYPE} eq "DATA");
1230
1231         return has_property($e, "charset");
1232 }
1233
1234
1235
1236 1;