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