pidl/lib/Parse/Pidl/Samba4/Python.pm

   1 ###################################################
   2 # Python function wrapper generator
   3 # Copyright jelmer@samba.org 2007-2008
   4 # released under the GNU GPL
   5
   6 package Parse::Pidl::Samba4::Python;
   7
   8 use Exporter;
   9 @ISA = qw(Exporter);
  10
  11 use strict;
  12 use Parse::Pidl qw(warning fatal);
  13 use Parse::Pidl::Typelist qw(hasType resolveType getType mapTypeName expandAlias);
  14 use Parse::Pidl::Util qw(has_property ParseExpr unmake_str);
  15 use Parse::Pidl::NDR qw(GetPrevLevel GetNextLevel ContainsDeferred is_charset_array);
  16 use Parse::Pidl::CUtil qw(get_value_of get_pointer_to);
  17 use Parse::Pidl::Samba4 qw(ArrayDynamicallyAllocated);
  18 use Parse::Pidl::Samba4::Header qw(GenerateFunctionInEnv GenerateFunctionOutEnv EnvSubstituteValue GenerateStructEnv);
  19
  20 use vars qw($VERSION);
  21 $VERSION = '0.01';
  22
  23 sub new($) {
  24         my ($class) = @_;
  25         my $self = { res => "", res_hdr => "", tabs => "", constants => {},
  26                      module_methods => [], module_objects => [], ready_types => [],
  27                                  readycode => [] };
  28         bless($self, $class);
  29 }
  30
  31 sub pidl_hdr ($$)
  32 {
  33         my $self = shift;
  34         $self->{res_hdr} .= shift;
  35 }
  36
  37 sub pidl($$)
  38 {
  39         my ($self, $d) = @_;
  40         if ($d) {
  41                 $self->{res} .= $self->{tabs};
  42                 $self->{res} .= $d;
  43         }
  44         $self->{res} .= "\n";
  45 }
  46
  47 sub indent($)
  48 {
  49         my ($self) = @_;
  50         $self->{tabs} .= "\t";
  51 }
  52
  53 sub deindent($)
  54 {
  55         my ($self) = @_;
  56         $self->{tabs} = substr($self->{tabs}, 0, -1);
  57 }
  58
  59 sub Import
  60 {
  61         my $self = shift;
  62         my @imports = @_;
  63         foreach (@imports) {
  64                 $_ = unmake_str($_);
  65                 s/\.idl$//;
  66                 $self->pidl_hdr("#include \"librpc/gen_ndr/py_$_\.h\"\n");
  67         }
  68 }
  69
  70 sub Const($$)
  71 {
  72     my ($self, $const) = @_;
  73         $self->register_constant($const->{NAME}, $const->{DTYPE}, $const->{VALUE});
  74 }
  75
  76 sub register_constant($$$$)
  77 {
  78         my ($self, $name, $type, $value) = @_;
  79
  80         $self->{constants}->{$name} = [$type, $value];
  81 }
  82
  83 sub EnumAndBitmapConsts($$$)
  84 {
  85         my ($self, $name, $d) = @_;
  86
  87         return unless (defined($d->{ELEMENTS}));
  88
  89         foreach my $e (@{$d->{ELEMENTS}}) {
  90                 $e =~ /^([A-Za-z0-9_]+)/;
  91                 my $cname = $1;
  92
  93                 $self->register_constant($cname, $d, $cname);
  94         }
  95 }
  96
  97 sub FromUnionToPythonFunction($$$$)
  98 {
  99         my ($self, $mem_ctx, $type, $switch, $name) = @_;
 100
 101         $self->pidl("PyObject *ret;");
 102         $self->pidl("");
 103
 104         $self->pidl("switch ($switch) {");
 105         $self->indent;
 106
 107         foreach my $e (@{$type->{ELEMENTS}}) {
 108                 $self->pidl("$e->{CASE}:");
 109
 110                 $self->indent;
 111
 112                 if ($e->{NAME}) {
 113                         $self->ConvertObjectToPython($mem_ctx, {}, $e, "$name->$e->{NAME}", "ret", "return NULL;");
 114                 } else {
 115                         $self->pidl("ret = Py_None;");
 116                 }
 117
 118                 $self->pidl("return ret;");
 119                 $self->pidl("");
 120
 121                 $self->deindent;
 122         }
 123
 124         $self->deindent;
 125         $self->pidl("}");
 126
 127         $self->pidl("PyErr_SetString(PyExc_TypeError, \"unknown union level\");");
 128         $self->pidl("return NULL;");
 129 }
 130
 131 sub FromPythonToUnionFunction($$$$$)
 132 {
 133         my ($self, $type, $typename, $switch, $mem_ctx, $name) = @_;
 134
 135         my $has_default = 0;
 136
 137         $self->pidl("$typename *ret = talloc_zero($mem_ctx, $typename);");
 138
 139         $self->pidl("switch ($switch) {");
 140         $self->indent;
 141
 142         foreach my $e (@{$type->{ELEMENTS}}) {
 143                 $self->pidl("$e->{CASE}:");
 144                 if ($e->{CASE} eq "default") { $has_default = 1; }
 145                 $self->indent;
 146                 if ($e->{NAME}) {
 147                         $self->ConvertObjectFromPython({}, $mem_ctx, $e, $name, "ret->$e->{NAME}", "talloc_free(ret); return NULL;");
 148                 }
 149                 $self->pidl("break;");
 150                 $self->deindent;
 151                 $self->pidl("");
 152         }
 153
 154         if (!$has_default) {
 155                 $self->pidl("default:");
 156                 $self->indent;
 157                 $self->pidl("PyErr_SetString(PyExc_TypeError, \"invalid union level value\");");
 158                 $self->pidl("talloc_free(ret);");
 159                 $self->pidl("ret = NULL;");
 160                 $self->deindent;
 161         }
 162
 163         $self->deindent;
 164         $self->pidl("}");
 165         $self->pidl("");
 166         $self->pidl("return ret;");
 167 }
 168
 169 sub PythonStruct($$$$$$)
 170 {
 171         my ($self, $modulename, $prettyname, $name, $cname, $d) = @_;
 172
 173         my $env = GenerateStructEnv($d, "object");
 174
 175         $self->pidl("");
 176
 177         my $getsetters = "NULL";
 178
 179         if ($#{$d->{ELEMENTS}} > -1) {
 180                 foreach my $e (@{$d->{ELEMENTS}}) {
 181                         my $varname = "object->$e->{NAME}";
 182                         $self->pidl("static PyObject *py_$name\_get_$e->{NAME}(PyObject *obj, void *closure)");
 183                         $self->pidl("{");
 184                         $self->indent;
 185                         $self->pidl("$cname *object = py_talloc_get_ptr(obj);");
 186                         $self->pidl("PyObject *py_$e->{NAME};");
 187                         $self->ConvertObjectToPython("py_talloc_get_mem_ctx(obj)", $env, $e, $varname, "py_$e->{NAME}", "return NULL;");
 188                         $self->pidl("return py_$e->{NAME};");
 189                         $self->deindent;
 190                         $self->pidl("}");
 191                         $self->pidl("");
 192
 193                         $self->pidl("static int py_$name\_set_$e->{NAME}(PyObject *py_obj, PyObject *value, void *closure)");
 194                         $self->pidl("{");
 195                         $self->indent;
 196                         $self->pidl("$cname *object = py_talloc_get_ptr(py_obj);");
 197                         my $mem_ctx = "py_talloc_get_mem_ctx(py_obj)";
 198                         my $l = $e->{LEVELS}[0];
 199                         my $nl = GetNextLevel($e, $l);
 200                         if ($l->{TYPE} eq "POINTER" and
 201                                 not ($nl->{TYPE} eq "ARRAY" and ($nl->{IS_FIXED} or is_charset_array($e, $nl))) and
 202                                 not ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE}))) {
 203                                 $self->pidl("talloc_free($varname);");
 204                         }
 205                         $self->ConvertObjectFromPython($env, $mem_ctx, $e, "value", $varname, "return -1;");
 206                         $self->pidl("return 0;");
 207                         $self->deindent;
 208                         $self->pidl("}");
 209                         $self->pidl("");
 210                 }
 211
 212                 $getsetters = "py_$name\_getsetters";
 213                 $self->pidl("static PyGetSetDef ".$getsetters."[] = {");
 214                 $self->indent;
 215                 foreach my $e (@{$d->{ELEMENTS}}) {
 216                         $self->pidl("{ discard_const_p(char, \"$e->{NAME}\"), py_$name\_get_$e->{NAME}, py_$name\_set_$e->{NAME} },");
 217                 }
 218                 $self->pidl("{ NULL }");
 219                 $self->deindent;
 220                 $self->pidl("};");
 221                 $self->pidl("");
 222         }
 223
 224         $self->pidl("static PyObject *py_$name\_new(PyTypeObject *self, PyObject *args, PyObject *kwargs)");
 225         $self->pidl("{");
 226         $self->indent;
 227         $self->pidl("char *kwlist[] = {NULL};");
 228         $self->pidl("$cname *ret = talloc_zero(NULL, $cname);");
 229         $self->pidl("if (!PyArg_ParseTupleAndKeywords(args, kwargs, \"\", kwlist))");
 230         $self->pidl("\treturn NULL;");
 231         $self->pidl("return py_talloc_import(&$name\_Type, ret);");
 232         $self->deindent;
 233         $self->pidl("}");
 234         $self->pidl("");
 235
 236         my $py_methods = "NULL";
 237
 238         # If the struct is not public there ndr_pull/ndr_push functions will
 239         # be static so not callable from here
 240         if (has_property($d, "public")) {
 241                 $self->pidl("static PyObject *py_$name\_ndr_pack(PyObject *py_obj)");
 242                 $self->pidl("{");
 243                 $self->indent;
 244                 $self->pidl("$cname *object = py_talloc_get_ptr(py_obj);");
 245                 $self->pidl("DATA_BLOB blob;");
 246                 $self->pidl("enum ndr_err_code err;");
 247                 $self->pidl("err = ndr_push_struct_blob(&blob, py_talloc_get_mem_ctx(py_obj), NULL, object, (ndr_push_flags_fn_t)ndr_push_$name);");
 248                 $self->pidl("if (err != NDR_ERR_SUCCESS) {");
 249                 $self->indent;
 250                 $self->pidl("PyErr_SetNdrError(err);");
 251                 $self->pidl("return NULL;");
 252                 $self->deindent;
 253                 $self->pidl("}");
 254                 $self->pidl("");
 255                 $self->pidl("return PyString_FromStringAndSize((char *)blob.data, blob.length);");
 256                 $self->deindent;
 257                 $self->pidl("}");
 258                 $self->pidl("");
 259
 260                 $self->pidl("static PyObject *py_$name\_ndr_unpack(PyObject *py_obj, PyObject *args)");
 261                 $self->pidl("{");
 262                 $self->indent;
 263                 $self->pidl("$cname *object = py_talloc_get_ptr(py_obj);");
 264                 $self->pidl("DATA_BLOB blob;");
 265                 $self->pidl("enum ndr_err_code err;");
 266                 $self->pidl("if (!PyArg_ParseTuple(args, \"s#:__ndr_unpack__\", &blob.data, &blob.length))");
 267                 $self->pidl("\treturn NULL;");
 268                 $self->pidl("");
 269                 $self->pidl("err = ndr_pull_struct_blob_all(&blob, py_talloc_get_mem_ctx(py_obj), NULL, object, (ndr_pull_flags_fn_t)ndr_pull_$name);");
 270                 $self->pidl("if (err != NDR_ERR_SUCCESS) {");
 271                 $self->indent;
 272                 $self->pidl("PyErr_SetNdrError(err);");
 273                 $self->pidl("return NULL;");
 274                 $self->deindent;
 275                 $self->pidl("}");
 276                 $self->pidl("");
 277                 $self->pidl("return Py_None;");
 278                 $self->deindent;
 279                 $self->pidl("}");
 280                 $self->pidl("");
 281                 $py_methods = "py_$name\_methods";
 282                 $self->pidl("static PyMethodDef $py_methods\[] = {");
 283                 $self->indent;
 284                 $self->pidl("{ \"__ndr_pack__\", (PyCFunction)py_$name\_ndr_pack, METH_NOARGS, \"S.pack() -> blob\\nNDR pack\" },");
 285                 $self->pidl("{ \"__ndr_unpack__\", (PyCFunction)py_$name\_ndr_unpack, METH_VARARGS, \"S.unpack(blob) -> None\\nNDR unpack\" },");
 286                 $self->deindent;
 287                 $self->pidl("#ifdef ".uc("py_$name\_extra_methods"));
 288                 $self->pidl("\t" .uc("py_$name\_extra_methods"));
 289                 $self->pidl("#endif");
 290                 $self->indent;
 291                 $self->pidl("{ NULL, NULL, 0, NULL }");
 292                 $self->deindent;
 293                 $self->pidl("};");
 294                 $self->pidl("");
 295         }
 296
 297         $self->pidl_hdr("PyAPI_DATA(PyTypeObject) $name\_Type;\n");
 298         $self->pidl_hdr("#define $name\_Check(op) PyObject_TypeCheck(op, &$name\_Type)\n");
 299         $self->pidl_hdr("#define $name\_CheckExact(op) ((op)->ob_type == &$name\_Type)\n");
 300         $self->pidl_hdr("\n");
 301         $self->pidl("#ifndef ".uc("py_$name\_repr"));
 302         $self->pidl("#define ".uc("py_$name\_repr") . " py_talloc_default_repr");
 303         $self->pidl("#endif");
 304         $self->pidl("");
 305         my $docstring = ($self->DocString($d, $name) or "NULL");
 306         my $typeobject = "$name\_Type";
 307         $self->pidl("PyTypeObject $typeobject = {");
 308         $self->indent;
 309         $self->pidl("PyObject_HEAD_INIT(NULL) 0,");
 310         $self->pidl(".tp_name = \"$modulename.$prettyname\",");
 311         $self->pidl(".tp_basicsize = sizeof(py_talloc_Object),");
 312         $self->pidl(".tp_dealloc = py_talloc_dealloc,");
 313         $self->pidl(".tp_getset = $getsetters,");
 314         $self->pidl(".tp_repr = ".uc("py_$name\_repr").",");
 315         $self->pidl(".tp_doc = $docstring,");
 316         $self->pidl(".tp_methods = $py_methods,");
 317         $self->pidl(".tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,");
 318         $self->pidl(".tp_new = py_$name\_new,");
 319         $self->deindent;
 320         $self->pidl("};");
 321
 322         $self->pidl("");
 323
 324         return "&$typeobject";
 325 }
 326
 327 sub get_metadata_var($)
 328 {
 329         my ($e) = @_;
 330         sub get_var($) { my $x = shift; $x =~ s/\*//g; return $x; }
 331
 332          if (has_property($e, "length_is")) {
 333                 return get_var($e->{PROPERTIES}->{length_is});
 334          } elsif (has_property($e, "size_is")) {
 335                 return get_var($e->{PROPERTIES}->{size_is});
 336          }
 337
 338          return undef;
 339 }
 340
 341 sub find_metadata_args($)
 342 {
 343         my ($fn) = @_;
 344         my $metadata_args = { in => {}, out => {} };
 345
 346         # Determine arguments that are metadata for other arguments (size_is/length_is)
 347         foreach my $e (@{$fn->{ELEMENTS}}) {
 348                 foreach my $dir (@{$e->{DIRECTION}}) {
 349                          my $main = get_metadata_var($e);
 350                          if ($main) {
 351                                  $metadata_args->{$dir}->{$main} = $e->{NAME};
 352                          }
 353                  }
 354         }
 355
 356         return $metadata_args;
 357 }
 358
 359 sub PythonFunctionUnpackOut($$$)
 360 {
 361         my ($self, $fn, $fnname) = @_;
 362
 363         my $outfnname = "unpack_$fnname\_args_out";
 364         my $signature = "";
 365
 366         my $metadata_args = find_metadata_args($fn);
 367
 368         my $env = GenerateFunctionOutEnv($fn, "r->");
 369         my $result_size = 0;
 370
 371         $self->pidl("static PyObject *$outfnname(struct $fn->{NAME} *r)");
 372         $self->pidl("{");
 373         $self->indent;
 374         $self->pidl("PyObject *result = Py_None;");
 375         foreach my $e (@{$fn->{ELEMENTS}}) {
 376                 next unless (grep(/out/,@{$e->{DIRECTION}}));
 377                 next if (($metadata_args->{in}->{$e->{NAME}} and grep(/in/, @{$e->{DIRECTION}})) or
 378                          ($metadata_args->{out}->{$e->{NAME}}) and grep(/out/, @{$e->{DIRECTION}}));
 379                 $self->pidl("PyObject *py_$e->{NAME};");
 380                 $result_size++;
 381         }
 382
 383         if ($fn->{RETURN_TYPE}) {
 384                 $result_size++ unless ($fn->{RETURN_TYPE} eq "WERROR" or $fn->{RETURN_TYPE} eq "NTSTATUS");
 385         }
 386
 387         my $i = 0;
 388
 389         if ($result_size > 1) {
 390                 $self->pidl("result = PyTuple_New($result_size);");
 391                 $signature .= "(";
 392         } elsif ($result_size == 0) {
 393                 $signature .= "None";
 394         }
 395
 396         foreach my $e (@{$fn->{ELEMENTS}}) {
 397                 next if ($metadata_args->{out}->{$e->{NAME}});
 398                 my $py_name = "py_$e->{NAME}";
 399                 if (grep(/out/,@{$e->{DIRECTION}})) {
 400                         $self->ConvertObjectToPython("r", $env, $e, "r->out.$e->{NAME}", $py_name, "return NULL;");
 401                         if ($result_size > 1) {
 402                                 $self->pidl("PyTuple_SetItem(result, $i, $py_name);");
 403                                 $i++;
 404                                 $signature .= "$e->{NAME}, ";
 405                         } else {
 406                                 $self->pidl("result = $py_name;");
 407                                 $signature .= $e->{NAME};
 408                         }
 409                 }
 410         }
 411
 412         if (defined($fn->{RETURN_TYPE}) and $fn->{RETURN_TYPE} eq "NTSTATUS") {
 413                 $self->handle_ntstatus("r->out.result", "NULL", undef);
 414         } elsif (defined($fn->{RETURN_TYPE}) and $fn->{RETURN_TYPE} eq "WERROR") {
 415                 $self->handle_werror("r->out.result", "NULL", undef);
 416         } elsif (defined($fn->{RETURN_TYPE})) {
 417                 my $conv = $self->ConvertObjectToPythonData("r", $fn->{RETURN_TYPE}, "r->out.result");
 418                 if ($result_size > 1) {
 419                         $self->pidl("PyTuple_SetItem(result, $i, $conv);");
 420                 } else {
 421                         $self->pidl("result = $conv;");
 422                 }
 423                 $signature .= "result";
 424         }
 425
 426         if (substr($signature, -2) eq ", ") {
 427                 $signature = substr($signature, 0, -2);
 428         }
 429         if ($result_size > 1) {
 430                 $signature .= ")";
 431         }
 432
 433         $self->pidl("return result;");
 434         $self->deindent;
 435         $self->pidl("}");
 436         $self->pidl("");
 437
 438         return ($outfnname, $signature);
 439 }
 440
 441 sub PythonFunctionPackIn($$$)
 442 {
 443         my ($self, $fn, $fnname) = @_;
 444         my $metadata_args = find_metadata_args($fn);
 445
 446         my $infnname = "pack_$fnname\_args_in";
 447
 448         $self->pidl("static bool $infnname(PyObject *args, PyObject *kwargs, struct $fn->{NAME} *r)");
 449         $self->pidl("{");
 450         $self->indent;
 451         my $args_format = "";
 452         my $args_string = "";
 453         my $args_names = "";
 454         my $signature = "";
 455
 456         foreach my $e (@{$fn->{ELEMENTS}}) {
 457                 next unless (grep(/in/,@{$e->{DIRECTION}}));
 458                 next if (($metadata_args->{in}->{$e->{NAME}} and grep(/in/, @{$e->{DIRECTION}})) or
 459                                  ($metadata_args->{out}->{$e->{NAME}}) and grep(/out/, @{$e->{DIRECTION}}));
 460                 $self->pidl("PyObject *py_$e->{NAME};");
 461                 $args_format .= "O";
 462                 $args_string .= ", &py_$e->{NAME}";
 463                 $args_names .= "\"$e->{NAME}\", ";
 464                 $signature .= "$e->{NAME}, ";
 465         }
 466         if (substr($signature, -2) eq ", ") {
 467                 $signature = substr($signature, 0, -2);
 468         }
 469         $self->pidl("const char *kwnames[] = {");
 470         $self->indent;
 471         $self->pidl($args_names . "NULL");
 472         $self->deindent;
 473         $self->pidl("};");
 474
 475         $self->pidl("");
 476         $self->pidl("if (!PyArg_ParseTupleAndKeywords(args, kwargs, \"$args_format:$fn->{NAME}\", discard_const_p(char *, kwnames)$args_string)) {");
 477         $self->indent;
 478         $self->pidl("return false;");
 479         $self->deindent;
 480         $self->pidl("}");
 481         $self->pidl("");
 482
 483         my $env = GenerateFunctionInEnv($fn, "r->");
 484
 485         my $fail = "return false;";
 486         foreach my $e (@{$fn->{ELEMENTS}}) {
 487                 next unless (grep(/in/,@{$e->{DIRECTION}}));
 488                 if ($metadata_args->{in}->{$e->{NAME}}) {
 489                         my $py_var = "py_".$metadata_args->{in}->{$e->{NAME}};
 490                         $self->pidl("PY_CHECK_TYPE(PyList, $py_var, $fail);");
 491                         my $val = "PyList_Size($py_var)";
 492                         if ($e->{LEVELS}[0]->{TYPE} eq "POINTER") {
 493                                 $self->pidl("r->in.$e->{NAME} = talloc_ptrtype(r, r->in.$e->{NAME});");
 494                                 $self->pidl("*r->in.$e->{NAME} = $val;");
 495                         } else {
 496                                 $self->pidl("r->in.$e->{NAME} = $val;");
 497                         }
 498                 } else {
 499                         $self->ConvertObjectFromPython($env, "r", $e, "py_$e->{NAME}", "r->in.$e->{NAME}", $fail);
 500                 }
 501         }
 502         $self->pidl("return true;");
 503         $self->deindent;
 504         $self->pidl("}");
 505         $self->pidl("");
 506         return ($infnname, $signature);
 507 }
 508
 509 sub PythonFunction($$$)
 510 {
 511         my ($self, $fn, $iface, $prettyname) = @_;
 512
 513         my $fnname = "py_$fn->{NAME}";
 514         my $docstring = $self->DocString($fn, $fn->{NAME});
 515
 516         my ($insignature, $outsignature);
 517         my ($infn, $outfn);
 518
 519         if (has_property($fn, "todo")) {
 520                 unless ($docstring) { $docstring = "NULL"; }
 521                 $infn = "NULL";
 522                 $outfn = "NULL";
 523         } else {
 524                 ($infn, $insignature) = $self->PythonFunctionPackIn($fn, $fnname);
 525                 ($outfn, $outsignature) = $self->PythonFunctionUnpackOut($fn, $fnname);
 526                 my $signature = "S.$prettyname($insignature) -> $outsignature";
 527                 if ($docstring) {
 528                         $docstring = "\"$signature\\n\\n\"$docstring";
 529                 } else {
 530                         $docstring = "\"$signature\"";
 531                 }
 532         }
 533
 534         return ($infn, $outfn, $docstring);
 535 }
 536
 537 sub handle_werror($$$$)
 538 {
 539         my ($self, $var, $retval, $mem_ctx) = @_;
 540
 541         $self->pidl("if (!W_ERROR_IS_OK($var)) {");
 542         $self->indent;
 543         $self->pidl("PyErr_SetWERROR($var);");
 544         $self->pidl("talloc_free($mem_ctx);") if ($mem_ctx);
 545         $self->pidl("return $retval;");
 546         $self->deindent;
 547         $self->pidl("}");
 548         $self->pidl("");
 549 }
 550
 551 sub handle_ntstatus($$$$)
 552 {
 553         my ($self, $var, $retval, $mem_ctx) = @_;
 554
 555         $self->pidl("if (NT_STATUS_IS_ERR($var)) {");
 556         $self->indent;
 557         $self->pidl("PyErr_SetNTSTATUS($var);");
 558         $self->pidl("talloc_free($mem_ctx);") if ($mem_ctx);
 559         $self->pidl("return $retval;");
 560         $self->deindent;
 561         $self->pidl("}");
 562         $self->pidl("");
 563 }
 564
 565 sub PythonType($$$$)
 566 {
 567         my ($self, $modulename, $d, $interface, $basename) = @_;
 568
 569         my $actual_ctype = $d;
 570         if ($actual_ctype->{TYPE} eq "TYPEDEF") {
 571                 $actual_ctype = $actual_ctype->{DATA};
 572         }
 573
 574         if ($actual_ctype->{TYPE} eq "STRUCT") {
 575                 my $typeobject;
 576                 my $fn_name = $d->{NAME};
 577
 578                 $fn_name =~ s/^$interface->{NAME}_//;
 579                 $fn_name =~ s/^$basename\_//;
 580
 581
 582                 if ($d->{TYPE} eq "STRUCT") {
 583                         $typeobject = $self->PythonStruct($modulename, $fn_name, $d->{NAME}, mapTypeName($d), $d);
 584                 } else {
 585                         $typeobject = $self->PythonStruct($modulename, $fn_name, $d->{NAME}, mapTypeName($d), $d->{DATA});
 586                 }
 587
 588                 $self->register_module_typeobject($fn_name, $typeobject);
 589         }
 590
 591         if ($d->{TYPE} eq "ENUM" or $d->{TYPE} eq "BITMAP") {
 592                 $self->EnumAndBitmapConsts($d->{NAME}, $d);
 593         }
 594
 595         if ($d->{TYPE} eq "TYPEDEF" and ($d->{DATA}->{TYPE} eq "ENUM" or $d->{DATA}->{TYPE} eq "BITMAP")) {
 596                 $self->EnumAndBitmapConsts($d->{NAME}, $d->{DATA});
 597         }
 598
 599         if ($actual_ctype->{TYPE} eq "UNION" and defined($actual_ctype->{ELEMENTS})) {
 600                 $self->pidl("PyObject *py_import_$d->{NAME}(TALLOC_CTX *mem_ctx, int level, " .mapTypeName($d) . " *in)");
 601                 $self->pidl("{");
 602                 $self->indent;
 603                 $self->FromUnionToPythonFunction("mem_ctx", $actual_ctype, "level", "in") if ($actual_ctype->{TYPE} eq "UNION");
 604                 $self->deindent;
 605                 $self->pidl("}");
 606                 $self->pidl("");
 607
 608                 $self->pidl(mapTypeName($d) . " *py_export_$d->{NAME}(TALLOC_CTX *mem_ctx, int level, PyObject *in)");
 609                 $self->pidl("{");
 610                 $self->indent;
 611                 $self->FromPythonToUnionFunction($actual_ctype, mapTypeName($d), "level", "mem_ctx", "in") if ($actual_ctype->{TYPE} eq "UNION");
 612                 $self->deindent;
 613                 $self->pidl("}");
 614                 $self->pidl("");
 615         }
 616 }
 617
 618 sub DocString($$$)
 619 {
 620         my ($self, $d, $name) = @_;
 621         if (has_property($d, "helpstring")) {
 622                 my $docstring = uc("py_doc_$name");
 623                 $self->pidl("#define $docstring ".has_property($d, "helpstring"));
 624                 return $docstring;
 625         }
 626
 627         return undef;
 628 }
 629
 630 sub Interface($$$)
 631 {
 632         my($self,$interface,$basename) = @_;
 633
 634         $self->pidl_hdr("#ifndef _HEADER_PYTHON_$interface->{NAME}\n");
 635         $self->pidl_hdr("#define _HEADER_PYTHON_$interface->{NAME}\n\n");
 636
 637         $self->pidl_hdr("\n");
 638
 639         if (has_property($interface, "pyhelper")) {
 640                 $self->pidl("#include \"".unmake_str($interface->{PROPERTIES}->{pyhelper})."\"\n");
 641         }
 642
 643         $self->Const($_) foreach (@{$interface->{CONSTS}});
 644
 645         foreach my $d (@{$interface->{TYPES}}) {
 646                 next if has_property($d, "nopython");
 647
 648                 $self->PythonType($basename, $d, $interface, $basename);
 649         }
 650
 651         if (defined $interface->{PROPERTIES}->{uuid}) {
 652                 $self->pidl_hdr("PyAPI_DATA(PyTypeObject) $interface->{NAME}_InterfaceType;\n");
 653                 $self->pidl("");
 654
 655                 my @fns = ();
 656
 657                 foreach my $d (@{$interface->{FUNCTIONS}}) {
 658                         next if not defined($d->{OPNUM});
 659                         next if has_property($d, "nopython");
 660
 661                         my $prettyname = $d->{NAME};
 662
 663                         $prettyname =~ s/^$interface->{NAME}_//;
 664                         $prettyname =~ s/^$basename\_//;
 665
 666                         my ($infn, $outfn, $fndocstring) = $self->PythonFunction($d, $interface->{NAME}, $prettyname);
 667
 668                         push (@fns, [$infn, $outfn, "dcerpc_$d->{NAME}", $prettyname, $fndocstring, $d->{OPNUM}]);
 669                 }
 670
 671                 $self->pidl("const struct PyNdrRpcMethodDef py_ndr_$interface->{NAME}\_methods[] = {");
 672                 $self->pidl_hdr("extern const struct PyNdrRpcMethodDef py_ndr_$interface->{NAME}\_methods[];");
 673                 $self->indent;
 674                 foreach my $d (@fns) {
 675                         my ($infn, $outfn, $callfn, $prettyname, $docstring, $opnum) = @$d;
 676                         $self->pidl("{ \"$prettyname\", $docstring, (dcerpc_call_fn)$callfn, (py_data_pack_fn)$infn, (py_data_unpack_fn)$outfn, $opnum, &ndr_table_$interface->{NAME} },");
 677                 }
 678                 $self->pidl("{ NULL }");
 679                 $self->deindent;
 680                 $self->pidl("};");
 681                 $self->pidl("");
 682
 683                 $self->pidl("static PyObject *interface_$interface->{NAME}_new(PyTypeObject *self, PyObject *args, PyObject *kwargs)");
 684                 $self->pidl("{");
 685                 $self->indent;
 686                 $self->pidl("dcerpc_InterfaceObject *ret;");
 687                 $self->pidl("const char *binding_string;");
 688                 $self->pidl("struct cli_credentials *credentials;");
 689                 $self->pidl("struct loadparm_context *lp_ctx = NULL;");
 690                 $self->pidl("PyObject *py_lp_ctx = Py_None, *py_credentials = Py_None, *py_basis = Py_None;");
 691                 $self->pidl("TALLOC_CTX *mem_ctx = NULL;");
 692                 $self->pidl("struct event_context *event_ctx;");
 693                 $self->pidl("NTSTATUS status;");
 694                 $self->pidl("");
 695                 $self->pidl("const char *kwnames[] = {");
 696                 $self->indent;
 697                 $self->pidl("\"binding\", \"lp_ctx\", \"credentials\", \"basis_connection\", NULL");
 698                 $self->deindent;
 699                 $self->pidl("};");
 700                 $self->pidl("extern struct loadparm_context *lp_from_py_object(PyObject *py_obj);");
 701                 $self->pidl("extern struct cli_credentials *cli_credentials_from_py_object(PyObject *py_obj);");
 702                 $self->pidl("");
 703                 $self->pidl("if (!PyArg_ParseTupleAndKeywords(args, kwargs, \"s|OOO:$interface->{NAME}\", discard_const_p(char *, kwnames), &binding_string, &py_lp_ctx, &py_credentials, &py_basis)) {");
 704                 $self->indent;
 705                 $self->pidl("return NULL;");
 706                 $self->deindent;
 707                 $self->pidl("}");
 708                 $self->pidl("");
 709                 $self->pidl("lp_ctx = lp_from_py_object(py_lp_ctx);");
 710                 $self->pidl("if (lp_ctx == NULL) {");
 711                 $self->indent;
 712                 $self->pidl("PyErr_SetString(PyExc_TypeError, \"Expected loadparm context\");");
 713                 $self->pidl("return NULL;");
 714                 $self->deindent;
 715                 $self->pidl("}");
 716                 $self->pidl("");
 717
 718                 $self->pidl("status = dcerpc_init(lp_ctx);");
 719                 $self->pidl("if (!NT_STATUS_IS_OK(status)) {");
 720                 $self->indent;
 721                 $self->pidl("PyErr_SetNTSTATUS(status);");
 722                 $self->pidl("return NULL;");
 723                 $self->deindent;
 724                 $self->pidl("}");
 725
 726                 $self->pidl("credentials = cli_credentials_from_py_object(py_credentials);");
 727                 $self->pidl("if (credentials == NULL) {");
 728                 $self->indent;
 729                 $self->pidl("PyErr_SetString(PyExc_TypeError, \"Expected credentials\");");
 730                 $self->pidl("return NULL;");
 731                 $self->deindent;
 732                 $self->pidl("}");
 733
 734                 $self->pidl("ret = PyObject_New(dcerpc_InterfaceObject, &$interface->{NAME}_InterfaceType);");
 735                 $self->pidl("");
 736                 $self->pidl("event_ctx = event_context_init(mem_ctx);");
 737                 $self->pidl("");
 738
 739                 $self->pidl("if (py_basis != Py_None) {");
 740                 $self->indent;
 741                 $self->pidl("struct dcerpc_pipe *base_pipe;");
 742                 $self->pidl("");
 743                 $self->pidl("if (!PyObject_TypeCheck(py_basis, &dcerpc_InterfaceType)) {");
 744                 $self->indent;
 745                 $self->pidl("PyErr_SetString(PyExc_ValueError, \"basis_connection must be a DCE/RPC connection\");");
 746                 $self->pidl("talloc_free(mem_ctx);");
 747                 $self->pidl("return NULL;");
 748                 $self->deindent;
 749                 $self->pidl("}");
 750                 $self->pidl("");
 751                 $self->pidl("base_pipe = ((dcerpc_InterfaceObject *)py_basis)->pipe;");
 752                 $self->pidl("");
 753                 $self->pidl("status = dcerpc_secondary_context(base_pipe, &ret->pipe, &ndr_table_$interface->{NAME});");
 754                 $self->deindent;
 755                 $self->pidl("} else {");
 756                 $self->indent;
 757                 $self->pidl("status = dcerpc_pipe_connect(NULL, &ret->pipe, binding_string, ");
 758                 $self->pidl("             &ndr_table_$interface->{NAME}, credentials, event_ctx, lp_ctx);");
 759                 $self->deindent;
 760                 $self->pidl("}");
 761                 $self->handle_ntstatus("status", "NULL", "mem_ctx");
 762
 763                 $self->pidl("ret->pipe->conn->flags |= DCERPC_NDR_REF_ALLOC;");
 764
 765                 $self->pidl("return (PyObject *)ret;");
 766                 $self->deindent;
 767                 $self->pidl("}");
 768
 769                 $self->pidl("");
 770
 771                 my $signature =
 772 "\"$interface->{NAME}(binding, lp_ctx=None, credentials=None) -> connection\\n\"
 773 \"\\n\"
 774 \"binding should be a DCE/RPC binding string (for example: ncacn_ip_tcp:127.0.0.1)\\n\"
 775 \"lp_ctx should be a path to a smb.conf file or a param.LoadParm object\\n\"
 776 \"credentials should be a credentials.Credentials object.\\n\\n\"";
 777
 778                 my $docstring = $self->DocString($interface, $interface->{NAME});
 779
 780                 if ($docstring) {
 781                         $docstring = "$signature$docstring";
 782                 } else {
 783                         $docstring = $signature;
 784                 }
 785
 786                 $self->pidl("PyTypeObject $interface->{NAME}_InterfaceType = {");
 787                 $self->indent;
 788                 $self->pidl("PyObject_HEAD_INIT(NULL) 0,");
 789                 $self->pidl(".tp_name = \"$basename.$interface->{NAME}\",");
 790                 $self->pidl(".tp_basicsize = sizeof(dcerpc_InterfaceObject),");
 791                 $self->pidl(".tp_base = &dcerpc_InterfaceType,");
 792                 $self->pidl(".tp_doc = $docstring,");
 793                 $self->pidl(".tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,");
 794                 $self->pidl(".tp_new = interface_$interface->{NAME}_new,");
 795                 $self->deindent;
 796                 $self->pidl("};");
 797
 798                 $self->pidl("");
 799
 800                 $self->register_module_typeobject($interface->{NAME}, "&$interface->{NAME}_InterfaceType");
 801                 $self->register_module_readycode(["if (!PyInterface_AddNdrRpcMethods(&$interface->{NAME}_InterfaceType, py_ndr_$interface->{NAME}\_methods))", "\treturn;", ""]);
 802         }
 803
 804         $self->pidl_hdr("\n");
 805         $self->pidl_hdr("#endif /* _HEADER_NDR_$interface->{NAME} */\n");
 806 }
 807
 808 sub register_module_method($$$$$)
 809 {
 810         my ($self, $fn_name, $pyfn_name, $flags, $doc) = @_;
 811
 812         push (@{$self->{module_methods}}, [$fn_name, $pyfn_name, $flags, $doc])
 813 }
 814
 815 sub register_module_typeobject($$$)
 816 {
 817         my ($self, $name, $py_name) = @_;
 818
 819         $self->register_module_object($name, "(PyObject *)$py_name");
 820
 821         $self->check_ready_type($py_name);
 822 }
 823
 824 sub check_ready_type($$)
 825 {
 826         my ($self, $py_name) = @_;
 827         push (@{$self->{ready_types}}, $py_name) unless (grep(/^$py_name$/,@{$self->{ready_types}}));
 828 }
 829
 830 sub register_module_readycode($$)
 831 {
 832         my ($self, $code) = @_;
 833
 834         push (@{$self->{readycode}}, @$code);
 835 }
 836
 837 sub register_module_object($$$)
 838 {
 839         my ($self, $name, $py_name) = @_;
 840
 841         push (@{$self->{module_objects}}, [$name, $py_name])
 842 }
 843
 844 sub assign($$$)
 845 {
 846         my ($self, $dest, $src) = @_;
 847         if ($dest =~ /^\&/) {
 848                 $self->pidl("memcpy($dest, $src, sizeof(" . get_value_of($dest) . "));");
 849         } else {
 850                 $self->pidl("$dest = $src;");
 851         }
 852 }
 853
 854 sub ConvertObjectFromPythonData($$$$$$)
 855 {
 856         my ($self, $mem_ctx, $cvar, $ctype, $target, $fail) = @_;
 857
 858         die("undef type for $cvar") unless(defined($ctype));
 859
 860         $ctype = resolveType($ctype);
 861
 862         my $actual_ctype = $ctype;
 863         if ($ctype->{TYPE} eq "TYPEDEF") {
 864                 $actual_ctype = $ctype->{DATA};
 865         }
 866
 867         if ($actual_ctype->{TYPE} eq "ENUM" or $actual_ctype->{TYPE} eq "BITMAP" or
 868                 $actual_ctype->{TYPE} eq "SCALAR" and (
 869                 expandAlias($actual_ctype->{NAME}) =~ /^(u?int[0-9]*|hyper|NTTIME|time_t|NTTIME_hyper|NTTIME_1sec|dlong|udlong|udlongr)$/)) {
 870                 $self->pidl("PY_CHECK_TYPE(PyInt, $cvar, $fail);");
 871                 $self->pidl("$target = PyInt_AsLong($cvar);");
 872                 return;
 873         }
 874
 875         if ($actual_ctype->{TYPE} eq "STRUCT" or $actual_ctype->{TYPE} eq "INTERFACE") {
 876                 $self->pidl("PY_CHECK_TYPE($ctype->{NAME}, $cvar, $fail);");
 877                 $self->assign($target, "py_talloc_get_ptr($cvar)");
 878                 return;
 879         }
 880
 881         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "DATA_BLOB") {
 882                 $self->pidl("$target = data_blob_talloc($mem_ctx, PyString_AsString($cvar), PyString_Size($cvar));");
 883                 return;
 884         }
 885
 886         if ($actual_ctype->{TYPE} eq "SCALAR" and
 887                 ($actual_ctype->{NAME} eq "string" or $actual_ctype->{NAME} eq "nbt_string" or $actual_ctype->{NAME} eq "nbt_name" or $actual_ctype->{NAME} eq "wrepl_nbt_name")) {
 888                 $self->pidl("$target = talloc_strdup($mem_ctx, PyString_AsString($cvar));");
 889                 return;
 890         }
 891
 892         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "ipv4address") {
 893                 $self->pidl("$target = PyString_AsString($cvar);");
 894                 return;
 895                 }
 896
 897
 898         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "NTSTATUS") {
 899                 $self->pidl("$target = NT_STATUS(PyInt_AsLong($cvar));");
 900                 return;
 901         }
 902
 903         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "WERROR") {
 904                 $self->pidl("$target = W_ERROR(PyInt_AsLong($cvar));");
 905                 return;
 906         }
 907
 908         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "string_array") {
 909                 $self->pidl("$target = PyCObject_AsVoidPtr($cvar);");
 910                 return;
 911         }
 912
 913         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "pointer") {
 914                 $self->assign($target, "PyCObject_AsVoidPtr($cvar)");
 915                 return;
 916         }
 917
 918         fatal($ctype, "unknown type $actual_ctype->{TYPE} for ".mapTypeName($ctype) . ": $cvar");
 919
 920 }
 921
 922 sub ConvertObjectFromPythonLevel($$$$$$$$)
 923 {
 924         my ($self, $env, $mem_ctx, $py_var, $e, $l, $var_name, $fail) = @_;
 925         my $nl = GetNextLevel($e, $l);
 926
 927         if ($l->{TYPE} eq "POINTER") {
 928                 if ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE})) {
 929                         $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $py_var, $e, $nl, $var_name, $fail);
 930                         return;
 931                 }
 932                 if ($l->{POINTER_TYPE} ne "ref") {
 933                         $self->pidl("if ($py_var == Py_None) {");
 934                         $self->indent;
 935                         $self->pidl("$var_name = NULL;");
 936                         $self->deindent;
 937                         $self->pidl("} else {");
 938                         $self->indent;
 939                 }
 940                 $self->pidl("$var_name = talloc_ptrtype($mem_ctx, $var_name);");
 941                 $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $py_var, $e, $nl, get_value_of($var_name), $fail);
 942                 if ($l->{POINTER_TYPE} ne "ref") {
 943                         $self->deindent;
 944                         $self->pidl("}");
 945                 }
 946         } elsif ($l->{TYPE} eq "ARRAY") {
 947                 my $pl = GetPrevLevel($e, $l);
 948                 if ($pl && $pl->{TYPE} eq "POINTER") {
 949                         $var_name = get_pointer_to($var_name);
 950                 }
 951
 952                 if (is_charset_array($e, $l)) {
 953                         $self->pidl("PY_CHECK_TYPE(PyUnicode, $py_var, $fail);");
 954                         # FIXME: Use Unix charset setting rather than utf-8
 955                         $self->pidl($var_name . " = PyString_AsString(PyUnicode_AsEncodedString($py_var, \"utf-8\", \"ignore\"));");
 956                 } else {
 957                         my $counter = "$e->{NAME}_cntr_$l->{LEVEL_INDEX}";
 958                         $self->pidl("PY_CHECK_TYPE(PyList, $py_var, $fail);");
 959                         $self->pidl("{");
 960                         $self->indent;
 961                         $self->pidl("int $counter;");
 962                         if (ArrayDynamicallyAllocated($e, $l)) {
 963                                 $self->pidl("$var_name = talloc_array_ptrtype($mem_ctx, $var_name, PyList_Size($py_var));");
 964                         }
 965                         $self->pidl("for ($counter = 0; $counter < PyList_Size($py_var); $counter++) {");
 966                         $self->indent;
 967                         $self->ConvertObjectFromPythonLevel($env, $var_name, "PyList_GetItem($py_var, $counter)", $e, GetNextLevel($e, $l), $var_name."[$counter]", $fail);
 968                         $self->deindent;
 969                         $self->pidl("}");
 970                         $self->deindent;
 971                         $self->pidl("}");
 972                 }
 973         } elsif ($l->{TYPE} eq "DATA") {
 974
 975                 if (not Parse::Pidl::Typelist::is_scalar($l->{DATA_TYPE})) {
 976                         $var_name = get_pointer_to($var_name);
 977                 }
 978                 $self->ConvertObjectFromPythonData($mem_ctx, $py_var, $l->{DATA_TYPE}, $var_name, $fail);
 979         } elsif ($l->{TYPE} eq "SWITCH") {
 980                 $var_name = get_pointer_to($var_name);
 981                 my $switch = ParseExpr($l->{SWITCH_IS}, $env, $e);
 982                 $self->assign($var_name, "py_export_" . GetNextLevel($e, $l)->{DATA_TYPE} . "($mem_ctx, $switch, $py_var)");
 983         } elsif ($l->{TYPE} eq "SUBCONTEXT") {
 984                 $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $py_var, $e, GetNextLevel($e, $l), $var_name, $fail);
 985         } else {
 986                 die("unknown level type $l->{TYPE}");
 987         }
 988 }
 989
 990 sub ConvertObjectFromPython($$$$$$$)
 991 {
 992         my ($self, $env, $mem_ctx, $ctype, $cvar, $target, $fail) = @_;
 993
 994         $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $cvar, $ctype, $ctype->{LEVELS}[0], $target, $fail);
 995 }
 996
 997 sub ConvertScalarToPython($$$)
 998 {
 999         my ($self, $ctypename, $cvar) = @_;
1000
1001         die("expected string for $cvar, not $ctypename") if (ref($ctypename) eq "HASH");
1002
1003         $ctypename = expandAlias($ctypename);
1004
1005         if ($ctypename =~ /^(char|u?int[0-9]*|hyper|dlong|udlong|udlongr|time_t|NTTIME_hyper|NTTIME|NTTIME_1sec)$/) {
1006                 return "PyInt_FromLong($cvar)";
1007         }
1008
1009         if ($ctypename eq "DATA_BLOB") {
1010                 return "PyString_FromStringAndSize((char *)($cvar).data, ($cvar).length)";
1011         }
1012
1013         if ($ctypename eq "NTSTATUS") {
1014                 return "PyErr_FromNTSTATUS($cvar)";
1015         }
1016
1017         if ($ctypename eq "WERROR") {
1018                 return "PyErr_FromWERROR($cvar)";
1019         }
1020
1021         if (($ctypename eq "string" or $ctypename eq "nbt_string" or $ctypename eq "nbt_name" or $ctypename eq "wrepl_nbt_name")) {
1022                 return "PyString_FromString($cvar)";
1023         }
1024
1025         # Not yet supported
1026         if ($ctypename eq "string_array") { return "PyCObject_FromVoidPtr($cvar)"; }
1027         if ($ctypename eq "ipv4address") { return "PyString_FromString($cvar)"; }
1028         if ($ctypename eq "pointer") {
1029                 return "PyCObject_FromVoidPtr($cvar, talloc_free)";
1030         }
1031
1032         die("Unknown scalar type $ctypename");
1033 }
1034
1035 sub ConvertObjectToPythonData($$$$$)
1036 {
1037         my ($self, $mem_ctx, $ctype, $cvar) = @_;
1038
1039         die("undef type for $cvar") unless(defined($ctype));
1040
1041         $ctype = resolveType($ctype);
1042
1043         my $actual_ctype = $ctype;
1044         if ($ctype->{TYPE} eq "TYPEDEF") {
1045                 $actual_ctype = $ctype->{DATA};
1046         }
1047
1048         if ($actual_ctype->{TYPE} eq "ENUM") {
1049                 return $self->ConvertScalarToPython(Parse::Pidl::Typelist::enum_type_fn($actual_ctype), $cvar);
1050         } elsif ($actual_ctype->{TYPE} eq "BITMAP") {
1051                 return $self->ConvertScalarToPython(Parse::Pidl::Typelist::bitmap_type_fn($actual_ctype), $cvar);
1052         } elsif ($actual_ctype->{TYPE} eq "SCALAR") {
1053                 return $self->ConvertScalarToPython($actual_ctype->{NAME}, $cvar);
1054         } elsif ($actual_ctype->{TYPE} eq "UNION") {
1055                 fatal($ctype, "union without discriminant: " . mapTypeName($ctype) . ": $cvar");
1056         } elsif ($actual_ctype->{TYPE} eq "STRUCT" or $actual_ctype->{TYPE} eq "INTERFACE") {
1057                 return "py_talloc_import_ex(&$ctype->{NAME}_Type, $mem_ctx, $cvar)";
1058         }
1059
1060         fatal($ctype, "unknown type $actual_ctype->{TYPE} for ".mapTypeName($ctype) . ": $cvar");
1061 }
1062
1063 sub fail_on_null($$$)
1064 {
1065         my ($self, $var, $fail) = @_;
1066         $self->pidl("if ($var == NULL) {");
1067         $self->indent;
1068         $self->pidl($fail);
1069         $self->deindent;
1070         $self->pidl("}");
1071 }
1072
1073 sub ConvertObjectToPythonLevel($$$$$$)
1074 {
1075         my ($self, $mem_ctx, $env, $e, $l, $var_name, $py_var, $fail) = @_;
1076         my $nl = GetNextLevel($e, $l);
1077
1078         if ($l->{TYPE} eq "POINTER") {
1079                 if ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE})) {
1080                         $self->ConvertObjectToPythonLevel($var_name, $env, $e, $nl, $var_name, $py_var, $fail);
1081                         return;
1082                 }
1083                 if ($l->{POINTER_TYPE} ne "ref") {
1084                         $self->pidl("if ($var_name == NULL) {");
1085                         $self->indent;
1086                         $self->pidl("$py_var = Py_None;");
1087                         $self->deindent;
1088                         $self->pidl("} else {");
1089                         $self->indent;
1090                 }
1091                 $self->ConvertObjectToPythonLevel($var_name, $env, $e, $nl, get_value_of($var_name), $py_var, $fail);
1092                 if ($l->{POINTER_TYPE} ne "ref") {
1093                         $self->deindent;
1094                         $self->pidl("}");
1095                 }
1096         } elsif ($l->{TYPE} eq "ARRAY") {
1097                 my $pl = GetPrevLevel($e, $l);
1098                 if ($pl && $pl->{TYPE} eq "POINTER") {
1099                         $var_name = get_pointer_to($var_name);
1100                 }
1101
1102                 if (is_charset_array($e, $l)) {
1103                         # FIXME: Use Unix charset setting rather than utf-8
1104                         $self->pidl("$py_var = PyUnicode_Decode($var_name, strlen($var_name), \"utf-8\", \"ignore\");");
1105                 } else {
1106                         die("No SIZE_IS for array $var_name") unless (defined($l->{SIZE_IS}));
1107                         my $length = $l->{SIZE_IS};
1108                         if (defined($l->{LENGTH_IS})) {
1109                                 $length = $l->{LENGTH_IS};
1110                         }
1111
1112                         $length = ParseExpr($length, $env, $e);
1113                         $self->pidl("$py_var = PyList_New($length);");
1114                         $self->fail_on_null($py_var, $fail);
1115                         $self->pidl("{");
1116                         $self->indent;
1117                         my $counter = "$e->{NAME}_cntr_$l->{LEVEL_INDEX}";
1118                         $self->pidl("int $counter;");
1119                         $self->pidl("for ($counter = 0; $counter < $length; $counter++) {");
1120                         $self->indent;
1121                         my $member_var = "py_$e->{NAME}_$l->{LEVEL_INDEX}";
1122                         $self->pidl("PyObject *$member_var;");
1123                         $self->ConvertObjectToPythonLevel($var_name, $env, $e, GetNextLevel($e, $l), $var_name."[$counter]", $member_var, $fail);
1124                         $self->pidl("PyList_SetItem($py_var, $counter, $member_var);");
1125                         $self->deindent;
1126                         $self->pidl("}");
1127                         $self->deindent;
1128                         $self->pidl("}");
1129                 }
1130         } elsif ($l->{TYPE} eq "SWITCH") {
1131                 $var_name = get_pointer_to($var_name);
1132                 my $switch = ParseExpr($l->{SWITCH_IS}, $env, $e);
1133                 $self->pidl("$py_var = py_import_" . GetNextLevel($e, $l)->{DATA_TYPE} . "($mem_ctx, $switch, $var_name);");
1134                 $self->fail_on_null($py_var, $fail);
1135
1136         } elsif ($l->{TYPE} eq "DATA") {
1137                 if (not Parse::Pidl::Typelist::is_scalar($l->{DATA_TYPE})) {
1138                         $var_name = get_pointer_to($var_name);
1139                 }
1140                 my $conv = $self->ConvertObjectToPythonData($mem_ctx, $l->{DATA_TYPE}, $var_name);
1141                 $self->pidl("$py_var = $conv;");
1142         } elsif ($l->{TYPE} eq "SUBCONTEXT") {
1143                 $self->ConvertObjectToPythonLevel($mem_ctx, $env, $e, GetNextLevel($e, $l), $var_name, $py_var, $fail);
1144         } else {
1145                 die("Unknown level type $l->{TYPE} $var_name");
1146         }
1147 }
1148
1149 sub ConvertObjectToPython($$$$$$)
1150 {
1151         my ($self, $mem_ctx, $env, $ctype, $cvar, $py_var, $fail) = @_;
1152
1153         $self->ConvertObjectToPythonLevel($mem_ctx, $env, $ctype, $ctype->{LEVELS}[0], $cvar, $py_var, $fail);
1154 }
1155
1156 sub Parse($$$$$)
1157 {
1158     my($self,$basename,$ndr,$ndr_hdr,$hdr) = @_;
1159
1160     my $py_hdr = $hdr;
1161     $py_hdr =~ s/ndr_([^\/]+)$/py_$1/g;
1162
1163     $self->pidl_hdr("/* header auto-generated by pidl */\n\n");
1164
1165     $self->pidl("
1166 /* Python wrapper functions auto-generated by pidl */
1167 #include \"includes.h\"
1168 #include <Python.h>
1169 #include \"librpc/rpc/dcerpc.h\"
1170 #include \"lib/talloc/pytalloc.h\"
1171 #include \"librpc/rpc/pyrpc.h\"
1172 #include \"lib/events/events.h\"
1173 #include \"$hdr\"
1174 #include \"$ndr_hdr\"
1175 #include \"$py_hdr\"
1176
1177 ");
1178
1179         foreach my $x (@$ndr) {
1180                 ($x->{TYPE} eq "IMPORT") && $self->Import(@{$x->{PATHS}});
1181             ($x->{TYPE} eq "INTERFACE") && $self->Interface($x, $basename);
1182         }
1183
1184         $self->pidl("static PyMethodDef $basename\_methods[] = {");
1185         $self->indent;
1186         foreach (@{$self->{module_methods}}) {
1187                 my ($fn_name, $pyfn_name, $flags, $doc) = @$_;
1188                 $self->pidl("{ \"$fn_name\", (PyCFunction)$pyfn_name, $flags, $doc },");
1189         }
1190
1191         $self->pidl("{ NULL, NULL, 0, NULL }");
1192         $self->deindent;
1193         $self->pidl("};");
1194
1195         $self->pidl("");
1196
1197         $self->pidl("void init$basename(void)");
1198         $self->pidl("{");
1199         $self->indent;
1200         $self->pidl("PyObject *m;");
1201         $self->pidl("");
1202
1203         foreach (@{$self->{ready_types}}) {
1204                 $self->pidl("if (PyType_Ready($_) < 0)");
1205                 $self->pidl("\treturn;");
1206         }
1207
1208         $self->pidl($_) foreach (@{$self->{readycode}});
1209
1210         $self->pidl("");
1211
1212         $self->pidl("m = Py_InitModule3(\"$basename\", $basename\_methods, \"$basename DCE/RPC\");");
1213         $self->pidl("if (m == NULL)");
1214         $self->pidl("\treturn;");
1215         $self->pidl("");
1216         foreach my $name (keys %{$self->{constants}}) {
1217                 my $py_obj;
1218                 my ($ctype, $cvar) = @{$self->{constants}->{$name}};
1219                 if ($cvar =~ /^[0-9]+$/ or $cvar =~ /^0x[0-9a-fA-F]+$/) {
1220                         $py_obj = "PyInt_FromLong($cvar)";
1221                 } elsif ($cvar =~ /^".*"$/) {
1222                         $py_obj = "PyString_FromString($cvar)";
1223                 } else {
1224                         $py_obj = $self->ConvertObjectToPythonData("NULL", expandAlias($ctype), $cvar);
1225                 }
1226
1227                 $self->pidl("PyModule_AddObject(m, \"$name\", $py_obj);");
1228         }
1229
1230         foreach (@{$self->{module_objects}}) {
1231                 my ($object_name, $c_name) = @$_;
1232                 $self->pidl("Py_INCREF($c_name);");
1233                 $self->pidl("PyModule_AddObject(m, \"$object_name\", $c_name);");
1234         }
1235
1236         $self->pidl("");
1237         $self->deindent;
1238         $self->pidl("}");
1239     return ($self->{res_hdr}, $self->{res});
1240 }
1241
1242 1;