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 error);
  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 $self = { res => "", res_hdr => "", tabs => "", constants => {},
  26                      module_methods => [], module_objects => [], ready_types => [],
  27                                  module_imports => [], type_imports => {},
  28                                  patch_type_calls => [], readycode => [] };
  29         bless($self, $class);
  30 }
  31
  32 sub pidl_hdr ($$)
  33 {
  34         my $self = shift;
  35         $self->{res_hdr} .= shift;
  36 }
  37
  38 sub pidl($$)
  39 {
  40         my ($self, $d) = @_;
  41         if ($d) {
  42                 if ((!($d =~ /^#/))) {
  43                         $self->{res} .= $self->{tabs};
  44                 }
  45                 $self->{res} .= $d;
  46         }
  47         $self->{res} .= "\n";
  48 }
  49
  50 sub indent($)
  51 {
  52         my ($self) = @_;
  53         $self->{tabs} .= "\t";
  54 }
  55
  56 sub deindent($)
  57 {
  58         my ($self) = @_;
  59         $self->{tabs} = substr($self->{tabs}, 0, -1);
  60 }
  61
  62 sub PrettifyTypeName($$)
  63 {
  64         my ($name, $basename) = @_;
  65
  66         $name =~ s/^$basename\_//;
  67
  68         return $name;
  69 }
  70
  71 sub Import
  72 {
  73         my $self = shift;
  74         my @imports = @_;
  75         foreach (@imports) {
  76                 $_ = unmake_str($_);
  77                 s/\.idl$//;
  78                 $self->pidl_hdr("#include \"librpc/gen_ndr/$_\.h\"\n");
  79                 $self->register_module_import($_);
  80         }
  81 }
  82
  83 sub Const($$)
  84 {
  85     my ($self, $const) = @_;
  86         $self->register_constant($const->{NAME}, $const->{DTYPE}, $const->{VALUE});
  87 }
  88
  89 sub register_constant($$$$)
  90 {
  91         my ($self, $name, $type, $value) = @_;
  92
  93         $self->{constants}->{$name} = [$type, $value];
  94 }
  95
  96 sub EnumAndBitmapConsts($$$)
  97 {
  98         my ($self, $name, $d) = @_;
  99
 100         return unless (defined($d->{ELEMENTS}));
 101
 102         foreach my $e (@{$d->{ELEMENTS}}) {
 103                 $e =~ /^([A-Za-z0-9_]+)/;
 104                 my $cname = $1;
 105
 106                 $self->register_constant($cname, $d, $cname);
 107         }
 108 }
 109
 110 sub FromUnionToPythonFunction($$$$)
 111 {
 112         my ($self, $mem_ctx, $type, $switch, $name) = @_;
 113
 114         $self->pidl("PyObject *ret;");
 115         $self->pidl("");
 116
 117         $self->pidl("switch ($switch) {");
 118         $self->indent;
 119
 120         foreach my $e (@{$type->{ELEMENTS}}) {
 121                 $self->pidl("$e->{CASE}:");
 122
 123                 $self->indent;
 124
 125                 if ($e->{NAME}) {
 126                         $self->ConvertObjectToPython($mem_ctx, {}, $e, "$name->$e->{NAME}", "ret", "return NULL;");
 127                 } else {
 128                         $self->pidl("ret = Py_None;");
 129                         $self->pidl("Py_INCREF(ret);");
 130                 }
 131
 132                 $self->pidl("return ret;");
 133                 $self->pidl("");
 134
 135                 $self->deindent;
 136         }
 137
 138         $self->deindent;
 139         $self->pidl("}");
 140
 141         $self->pidl("PyErr_SetString(PyExc_TypeError, \"unknown union level\");");
 142         $self->pidl("return NULL;");
 143 }
 144
 145 sub FromPythonToUnionFunction($$$$$)
 146 {
 147         my ($self, $type, $typename, $switch, $mem_ctx, $name) = @_;
 148
 149         my $has_default = 0;
 150
 151         $self->pidl("$typename *ret = talloc_zero($mem_ctx, $typename);");
 152
 153         $self->pidl("switch ($switch) {");
 154         $self->indent;
 155
 156         foreach my $e (@{$type->{ELEMENTS}}) {
 157                 $self->pidl("$e->{CASE}:");
 158                 if ($e->{CASE} eq "default") { $has_default = 1; }
 159                 $self->indent;
 160                 if ($e->{NAME}) {
 161                         $self->ConvertObjectFromPython({}, $mem_ctx, undef, $e, $name, "ret->$e->{NAME}", "talloc_free(ret); return NULL;");
 162                 }
 163                 $self->pidl("break;");
 164                 $self->deindent;
 165                 $self->pidl("");
 166         }
 167
 168         if (!$has_default) {
 169                 $self->pidl("default:");
 170                 $self->indent;
 171                 $self->pidl("PyErr_SetString(PyExc_TypeError, \"invalid union level value\");");
 172                 $self->pidl("talloc_free(ret);");
 173                 $self->pidl("ret = NULL;");
 174                 $self->deindent;
 175         }
 176
 177         $self->deindent;
 178         $self->pidl("}");
 179         $self->pidl("");
 180         $self->pidl("return ret;");
 181 }
 182
 183 sub PythonStruct($$$$$$)
 184 {
 185         my ($self, $modulename, $prettyname, $name, $cname, $d) = @_;
 186
 187         my $env = GenerateStructEnv($d, "object");
 188
 189         $self->pidl("");
 190
 191         my $getsetters = "NULL";
 192
 193         if ($#{$d->{ELEMENTS}} > -1) {
 194                 foreach my $e (@{$d->{ELEMENTS}}) {
 195                         my $varname = "object->$e->{NAME}";
 196                         $self->pidl("static PyObject *py_$name\_get_$e->{NAME}(PyObject *obj, void *closure)");
 197                         $self->pidl("{");
 198                         $self->indent;
 199                         $self->pidl("$cname *object = ($cname *)py_talloc_get_ptr(obj);");
 200                         $self->pidl("PyObject *py_$e->{NAME};");
 201                         $self->ConvertObjectToPython("py_talloc_get_mem_ctx(obj)", $env, $e, $varname, "py_$e->{NAME}", "return NULL;");
 202                         $self->pidl("return py_$e->{NAME};");
 203                         $self->deindent;
 204                         $self->pidl("}");
 205                         $self->pidl("");
 206
 207                         $self->pidl("static int py_$name\_set_$e->{NAME}(PyObject *py_obj, PyObject *value, void *closure)");
 208                         $self->pidl("{");
 209                         $self->indent;
 210                         $self->pidl("$cname *object = ($cname *)py_talloc_get_ptr(py_obj);");
 211                         my $mem_ctx = "py_talloc_get_mem_ctx(py_obj)";
 212                         my $mem_ref = "py_talloc_get_ptr(py_obj)";
 213                         my $l = $e->{LEVELS}[0];
 214                         my $nl = GetNextLevel($e, $l);
 215                         if ($l->{TYPE} eq "POINTER" and
 216                                 not ($nl->{TYPE} eq "ARRAY" and ($nl->{IS_FIXED} or is_charset_array($e, $nl))) and
 217                                 not ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE}))) {
 218                                 $self->pidl("talloc_unlink(py_talloc_get_mem_ctx(py_obj), $varname);");
 219                         }
 220                         $self->ConvertObjectFromPython($env, $mem_ctx, $mem_ref, $e, "value", $varname, "return -1;");
 221                         $self->pidl("return 0;");
 222                         $self->deindent;
 223                         $self->pidl("}");
 224                         $self->pidl("");
 225                 }
 226
 227                 $getsetters = "py_$name\_getsetters";
 228                 $self->pidl("static PyGetSetDef ".$getsetters."[] = {");
 229                 $self->indent;
 230                 foreach my $e (@{$d->{ELEMENTS}}) {
 231                         $self->pidl("{ discard_const_p(char, \"$e->{NAME}\"), py_$name\_get_$e->{NAME}, py_$name\_set_$e->{NAME} },");
 232                 }
 233                 $self->pidl("{ NULL }");
 234                 $self->deindent;
 235                 $self->pidl("};");
 236                 $self->pidl("");
 237         }
 238
 239         $self->pidl("static PyObject *py_$name\_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)");
 240         $self->pidl("{");
 241         $self->indent;
 242         $self->pidl("return py_talloc_new($cname, type);");
 243         $self->deindent;
 244         $self->pidl("}");
 245         $self->pidl("");
 246
 247         my $py_methods = "NULL";
 248
 249         # If the struct is not public there ndr_pull/ndr_push functions will
 250         # be static so not callable from here
 251         if (has_property($d, "public")) {
 252                 $self->pidl("static PyObject *py_$name\_ndr_pack(PyObject *py_obj)");
 253                 $self->pidl("{");
 254                 $self->indent;
 255                 $self->pidl("$cname *object = ($cname *)py_talloc_get_ptr(py_obj);");
 256                 $self->pidl("DATA_BLOB blob;");
 257                 $self->pidl("enum ndr_err_code err;");
 258                 $self->pidl("err = ndr_push_struct_blob(&blob, py_talloc_get_mem_ctx(py_obj), object, (ndr_push_flags_fn_t)ndr_push_$name);");
 259                 $self->pidl("if (err != NDR_ERR_SUCCESS) {");
 260                 $self->indent;
 261                 $self->pidl("PyErr_SetNdrError(err);");
 262                 $self->pidl("return NULL;");
 263                 $self->deindent;
 264                 $self->pidl("}");
 265                 $self->pidl("");
 266                 $self->pidl("return PyString_FromStringAndSize((char *)blob.data, blob.length);");
 267                 $self->deindent;
 268                 $self->pidl("}");
 269                 $self->pidl("");
 270
 271                 $self->pidl("static PyObject *py_$name\_ndr_unpack(PyObject *py_obj, PyObject *args)");
 272                 $self->pidl("{");
 273                 $self->indent;
 274                 $self->pidl("$cname *object = ($cname *)py_talloc_get_ptr(py_obj);");
 275                 $self->pidl("DATA_BLOB blob;");
 276                 $self->pidl("enum ndr_err_code err;");
 277                 $self->pidl("if (!PyArg_ParseTuple(args, \"s#:__ndr_unpack__\", &blob.data, &blob.length))");
 278                 $self->pidl("\treturn NULL;");
 279                 $self->pidl("");
 280                 $self->pidl("err = ndr_pull_struct_blob_all(&blob, py_talloc_get_mem_ctx(py_obj), object, (ndr_pull_flags_fn_t)ndr_pull_$name);");
 281                 $self->pidl("if (err != NDR_ERR_SUCCESS) {");
 282                 $self->indent;
 283                 $self->pidl("PyErr_SetNdrError(err);");
 284                 $self->pidl("return NULL;");
 285                 $self->deindent;
 286                 $self->pidl("}");
 287                 $self->pidl("");
 288                 $self->pidl("Py_RETURN_NONE;");
 289                 $self->deindent;
 290                 $self->pidl("}");
 291                 $self->pidl("");
 292
 293                 $self->pidl("static PyObject *py_$name\_ndr_print(PyObject *py_obj)");
 294                 $self->pidl("{");
 295                 $self->indent;
 296                 $self->pidl("$cname *object = ($cname *)py_talloc_get_ptr(py_obj);");
 297                 $self->pidl("char *retstr;");
 298                 $self->pidl("retstr = ndr_print_struct_string(py_talloc_get_mem_ctx(py_obj), (ndr_print_fn_t)ndr_print_$name, \"$name\", object);");
 299                 $self->pidl("return PyString_FromString(retstr);");
 300                 $self->deindent;
 301                 $self->pidl("}");
 302                 $self->pidl("");
 303
 304                 $py_methods = "py_$name\_methods";
 305                 $self->pidl("static PyMethodDef $py_methods\[] = {");
 306                 $self->indent;
 307                 $self->pidl("{ \"__ndr_pack__\", (PyCFunction)py_$name\_ndr_pack, METH_NOARGS, \"S.ndr_pack(object) -> blob\\nNDR pack\" },");
 308                 $self->pidl("{ \"__ndr_unpack__\", (PyCFunction)py_$name\_ndr_unpack, METH_VARARGS, \"S.ndr_unpack(class, blob) -> None\\nNDR unpack\" },");
 309                 $self->pidl("{ \"__ndr_print__\", (PyCFunction)py_$name\_ndr_print, METH_VARARGS, \"S.ndr_print(object) -> None\\nNDR print\" },");
 310                 $self->pidl("{ NULL, NULL, 0, NULL }");
 311                 $self->deindent;
 312                 $self->pidl("};");
 313                 $self->pidl("");
 314         }
 315
 316         $self->pidl_hdr("staticforward PyTypeObject $name\_Type;\n");
 317         $self->pidl("");
 318         my $docstring = $self->DocString($d, $name);
 319         my $typeobject = "$name\_Type";
 320         $self->pidl("static PyTypeObject $typeobject = {");
 321         $self->indent;
 322         $self->pidl("PyObject_HEAD_INIT(NULL) 0,");
 323         $self->pidl(".tp_name = \"$modulename.$prettyname\",");
 324         $self->pidl(".tp_basicsize = sizeof(py_talloc_Object),");
 325         $self->pidl(".tp_dealloc = py_talloc_dealloc,");
 326         $self->pidl(".tp_getset = $getsetters,");
 327         $self->pidl(".tp_repr = py_talloc_default_repr,");
 328         if ($docstring) {
 329                 $self->pidl(".tp_doc = $docstring,");
 330         }
 331         $self->pidl(".tp_methods = $py_methods,");
 332         $self->pidl(".tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,");
 333         $self->pidl(".tp_new = py_$name\_new,");
 334         $self->deindent;
 335         $self->pidl("};");
 336
 337         $self->pidl("");
 338
 339         return "&$typeobject";
 340 }
 341
 342 sub get_metadata_var($)
 343 {
 344         my ($e) = @_;
 345         sub get_var($) { my $x = shift; $x =~ s/\*//g; return $x; }
 346
 347          if (has_property($e, "length_is")) {
 348                 return get_var($e->{PROPERTIES}->{length_is});
 349          } elsif (has_property($e, "size_is")) {
 350                 return get_var($e->{PROPERTIES}->{size_is});
 351          }
 352
 353          return undef;
 354 }
 355
 356 sub find_metadata_args($)
 357 {
 358         my ($fn) = @_;
 359         my $metadata_args = { in => {}, out => {} };
 360
 361         # Determine arguments that are metadata for other arguments (size_is/length_is)
 362         foreach my $e (@{$fn->{ELEMENTS}}) {
 363                 foreach my $dir (@{$e->{DIRECTION}}) {
 364                          my $main = get_metadata_var($e);
 365                          if ($main) {
 366                                  $metadata_args->{$dir}->{$main} = $e->{NAME};
 367                          }
 368                  }
 369         }
 370
 371         return $metadata_args;
 372 }
 373
 374 sub PythonFunctionUnpackOut($$$)
 375 {
 376         my ($self, $fn, $fnname) = @_;
 377
 378         my $outfnname = "unpack_$fnname\_args_out";
 379         my $signature = "";
 380
 381         my $metadata_args = find_metadata_args($fn);
 382
 383         my $env = GenerateFunctionOutEnv($fn, "r->");
 384         my $result_size = 0;
 385
 386         $self->pidl("static PyObject *$outfnname(struct $fn->{NAME} *r)");
 387         $self->pidl("{");
 388         $self->indent;
 389         $self->pidl("PyObject *result;");
 390         foreach my $e (@{$fn->{ELEMENTS}}) {
 391                 next unless (grep(/out/,@{$e->{DIRECTION}}));
 392                 next if (($metadata_args->{in}->{$e->{NAME}} and grep(/in/, @{$e->{DIRECTION}})) or
 393                          ($metadata_args->{out}->{$e->{NAME}}) and grep(/out/, @{$e->{DIRECTION}}));
 394                 $self->pidl("PyObject *py_$e->{NAME};");
 395                 $result_size++;
 396         }
 397
 398         if ($fn->{RETURN_TYPE}) {
 399                 $result_size++ unless ($fn->{RETURN_TYPE} eq "WERROR" or $fn->{RETURN_TYPE} eq "NTSTATUS");
 400         }
 401
 402         my $i = 0;
 403
 404         if ($result_size > 1) {
 405                 $self->pidl("result = PyTuple_New($result_size);");
 406                 $signature .= "(";
 407         } elsif ($result_size == 0) {
 408                 $self->pidl("result = Py_None;");
 409                 $self->pidl("Py_INCREF(result);");
 410                 $signature .= "None";
 411         }
 412
 413         foreach my $e (@{$fn->{ELEMENTS}}) {
 414                 next if ($metadata_args->{out}->{$e->{NAME}});
 415                 my $py_name = "py_$e->{NAME}";
 416                 if (grep(/out/,@{$e->{DIRECTION}})) {
 417                         $self->ConvertObjectToPython("r", $env, $e, "r->out.$e->{NAME}", $py_name, "return NULL;");
 418                         if ($result_size > 1) {
 419                                 $self->pidl("PyTuple_SetItem(result, $i, $py_name);");
 420                                 $i++;
 421                                 $signature .= "$e->{NAME}, ";
 422                         } else {
 423                                 $self->pidl("result = $py_name;");
 424                                 $signature .= $e->{NAME};
 425                         }
 426                 }
 427         }
 428
 429         if (defined($fn->{RETURN_TYPE}) and $fn->{RETURN_TYPE} eq "NTSTATUS") {
 430                 $self->handle_ntstatus("r->out.result", "NULL", undef);
 431         } elsif (defined($fn->{RETURN_TYPE}) and $fn->{RETURN_TYPE} eq "WERROR") {
 432                 $self->handle_werror("r->out.result", "NULL", undef);
 433         } elsif (defined($fn->{RETURN_TYPE})) {
 434                 my $conv = $self->ConvertObjectToPythonData("r", $fn->{RETURN_TYPE}, "r->out.result", $fn);
 435                 if ($result_size > 1) {
 436                         $self->pidl("PyTuple_SetItem(result, $i, $conv);");
 437                 } else {
 438                         $self->pidl("result = $conv;");
 439                 }
 440                 $signature .= "result";
 441         }
 442
 443         if (substr($signature, -2) eq ", ") {
 444                 $signature = substr($signature, 0, -2);
 445         }
 446         if ($result_size > 1) {
 447                 $signature .= ")";
 448         }
 449
 450         $self->pidl("return result;");
 451         $self->deindent;
 452         $self->pidl("}");
 453         $self->pidl("");
 454
 455         return ($outfnname, $signature);
 456 }
 457
 458 sub PythonFunctionPackIn($$$)
 459 {
 460         my ($self, $fn, $fnname) = @_;
 461         my $metadata_args = find_metadata_args($fn);
 462
 463         my $infnname = "pack_$fnname\_args_in";
 464
 465         $self->pidl("static bool $infnname(PyObject *args, PyObject *kwargs, struct $fn->{NAME} *r)");
 466         $self->pidl("{");
 467         $self->indent;
 468         my $args_format = "";
 469         my $args_string = "";
 470         my $args_names = "";
 471         my $signature = "";
 472
 473         foreach my $e (@{$fn->{ELEMENTS}}) {
 474                 next unless (grep(/in/,@{$e->{DIRECTION}}));
 475                 next if (($metadata_args->{in}->{$e->{NAME}} and grep(/in/, @{$e->{DIRECTION}})) or
 476                                  ($metadata_args->{out}->{$e->{NAME}}) and grep(/out/, @{$e->{DIRECTION}}));
 477                 $self->pidl("PyObject *py_$e->{NAME};");
 478                 $args_format .= "O";
 479                 $args_string .= ", &py_$e->{NAME}";
 480                 $args_names .= "\"$e->{NAME}\", ";
 481                 $signature .= "$e->{NAME}, ";
 482         }
 483         if (substr($signature, -2) eq ", ") {
 484                 $signature = substr($signature, 0, -2);
 485         }
 486         $self->pidl("const char *kwnames[] = {");
 487         $self->indent;
 488         $self->pidl($args_names . "NULL");
 489         $self->deindent;
 490         $self->pidl("};");
 491
 492         $self->pidl("");
 493         $self->pidl("if (!PyArg_ParseTupleAndKeywords(args, kwargs, \"$args_format:$fn->{NAME}\", discard_const_p(char *, kwnames)$args_string)) {");
 494         $self->indent;
 495         $self->pidl("return false;");
 496         $self->deindent;
 497         $self->pidl("}");
 498         $self->pidl("");
 499
 500         my $env = GenerateFunctionInEnv($fn, "r->");
 501
 502         my $fail = "return false;";
 503         foreach my $e (@{$fn->{ELEMENTS}}) {
 504                 next unless (grep(/in/,@{$e->{DIRECTION}}));
 505                 if ($metadata_args->{in}->{$e->{NAME}}) {
 506                         my $py_var = "py_".$metadata_args->{in}->{$e->{NAME}};
 507                         $self->pidl("PY_CHECK_TYPE(&PyList_Type, $py_var, $fail);");
 508                         my $val = "PyList_Size($py_var)";
 509                         if ($e->{LEVELS}[0]->{TYPE} eq "POINTER") {
 510                                 $self->pidl("r->in.$e->{NAME} = talloc_ptrtype(r, r->in.$e->{NAME});");
 511                                 $self->pidl("*r->in.$e->{NAME} = $val;");
 512                         } else {
 513                                 $self->pidl("r->in.$e->{NAME} = $val;");
 514                         }
 515                 } else {
 516                         $self->ConvertObjectFromPython($env, "r", undef, $e, "py_$e->{NAME}", "r->in.$e->{NAME}", $fail);
 517                 }
 518         }
 519         $self->pidl("return true;");
 520         $self->deindent;
 521         $self->pidl("}");
 522         $self->pidl("");
 523         return ($infnname, $signature);
 524 }
 525
 526 sub PythonFunction($$$)
 527 {
 528         my ($self, $fn, $iface, $prettyname) = @_;
 529
 530         my $fnname = "py_$fn->{NAME}";
 531         my $docstring = $self->DocString($fn, $fn->{NAME});
 532
 533         my ($insignature, $outsignature);
 534         my ($infn, $outfn);
 535
 536         if (has_property($fn, "todo")) {
 537                 unless ($docstring) { $docstring = "NULL"; }
 538                 $infn = "NULL";
 539                 $outfn = "NULL";
 540         } else {
 541                 ($infn, $insignature) = $self->PythonFunctionPackIn($fn, $fnname);
 542                 ($outfn, $outsignature) = $self->PythonFunctionUnpackOut($fn, $fnname);
 543                 my $signature = "S.$prettyname($insignature) -> $outsignature";
 544                 if ($docstring) {
 545                         $docstring = "\"$signature\\n\\n\"$docstring";
 546                 } else {
 547                         $docstring = "\"$signature\"";
 548                 }
 549         }
 550
 551         return ($infn, $outfn, $docstring);
 552 }
 553
 554 sub handle_werror($$$$)
 555 {
 556         my ($self, $var, $retval, $mem_ctx) = @_;
 557
 558         $self->pidl("if (!W_ERROR_IS_OK($var)) {");
 559         $self->indent;
 560         $self->pidl("PyErr_SetWERROR($var);");
 561         $self->pidl("talloc_free($mem_ctx);") if ($mem_ctx);
 562         $self->pidl("return $retval;");
 563         $self->deindent;
 564         $self->pidl("}");
 565         $self->pidl("");
 566 }
 567
 568 sub handle_ntstatus($$$$)
 569 {
 570         my ($self, $var, $retval, $mem_ctx) = @_;
 571
 572         $self->pidl("if (NT_STATUS_IS_ERR($var)) {");
 573         $self->indent;
 574         $self->pidl("PyErr_SetNTSTATUS($var);");
 575         $self->pidl("talloc_free($mem_ctx);") if ($mem_ctx);
 576         $self->pidl("return $retval;");
 577         $self->deindent;
 578         $self->pidl("}");
 579         $self->pidl("");
 580 }
 581
 582 sub PythonType($$$$)
 583 {
 584         my ($self, $modulename, $d, $interface, $basename) = @_;
 585
 586         my $actual_ctype = $d;
 587         if ($actual_ctype->{TYPE} eq "TYPEDEF") {
 588                 $actual_ctype = $actual_ctype->{DATA};
 589         }
 590
 591         if ($actual_ctype->{TYPE} eq "STRUCT") {
 592                 my $typeobject;
 593                 my $fn_name = PrettifyTypeName($d->{NAME}, $basename);
 594
 595                 if ($d->{TYPE} eq "STRUCT") {
 596                         $typeobject = $self->PythonStruct($modulename, $fn_name, $d->{NAME}, mapTypeName($d), $d);
 597                 } else {
 598                         $typeobject = $self->PythonStruct($modulename, $fn_name, $d->{NAME}, mapTypeName($d), $d->{DATA});
 599                 }
 600
 601                 $self->register_module_typeobject($fn_name, $typeobject);
 602         }
 603
 604         if ($d->{TYPE} eq "ENUM" or $d->{TYPE} eq "BITMAP") {
 605                 $self->EnumAndBitmapConsts($d->{NAME}, $d);
 606         }
 607
 608         if ($d->{TYPE} eq "TYPEDEF" and ($d->{DATA}->{TYPE} eq "ENUM" or $d->{DATA}->{TYPE} eq "BITMAP")) {
 609                 $self->EnumAndBitmapConsts($d->{NAME}, $d->{DATA});
 610         }
 611
 612         if ($actual_ctype->{TYPE} eq "UNION" and defined($actual_ctype->{ELEMENTS})) {
 613                 $self->pidl("PyObject *py_import_$d->{NAME}(TALLOC_CTX *mem_ctx, int level, " .mapTypeName($d) . " *in)");
 614                 $self->pidl("{");
 615                 $self->indent;
 616                 $self->FromUnionToPythonFunction("mem_ctx", $actual_ctype, "level", "in") if ($actual_ctype->{TYPE} eq "UNION");
 617                 $self->deindent;
 618                 $self->pidl("}");
 619                 $self->pidl("");
 620
 621                 $self->pidl(mapTypeName($d) . " *py_export_$d->{NAME}(TALLOC_CTX *mem_ctx, int level, PyObject *in)");
 622                 $self->pidl("{");
 623                 $self->indent;
 624                 $self->FromPythonToUnionFunction($actual_ctype, mapTypeName($d), "level", "mem_ctx", "in") if ($actual_ctype->{TYPE} eq "UNION");
 625                 $self->deindent;
 626                 $self->pidl("}");
 627                 $self->pidl("");
 628         }
 629 }
 630
 631 sub DocString($$$)
 632 {
 633         my ($self, $d, $name) = @_;
 634         if (has_property($d, "helpstring")) {
 635                 my $docstring = uc("py_doc_$name");
 636                 $self->pidl("#define $docstring ".has_property($d, "helpstring"));
 637                 return $docstring;
 638         }
 639
 640         return undef;
 641 }
 642
 643 sub Interface($$$)
 644 {
 645         my($self,$interface,$basename) = @_;
 646
 647         if (has_property($interface, "pyhelper")) {
 648                 $self->pidl("#include \"".unmake_str($interface->{PROPERTIES}->{pyhelper})."\"\n");
 649         }
 650
 651         $self->Const($_) foreach (@{$interface->{CONSTS}});
 652
 653         foreach my $d (@{$interface->{TYPES}}) {
 654                 next if has_property($d, "nopython");
 655
 656                 $self->PythonType($basename, $d, $interface, $basename);
 657         }
 658
 659         if (defined $interface->{PROPERTIES}->{uuid}) {
 660                 $self->pidl_hdr("staticforward PyTypeObject $interface->{NAME}_InterfaceType;\n");
 661                 $self->pidl("");
 662
 663                 my @fns = ();
 664
 665                 foreach my $d (@{$interface->{FUNCTIONS}}) {
 666                         next if not defined($d->{OPNUM});
 667                         next if has_property($d, "nopython");
 668                         next if has_property($d, "todo");
 669
 670                         my $prettyname = $d->{NAME};
 671
 672                         $prettyname =~ s/^$interface->{NAME}_//;
 673                         $prettyname =~ s/^$basename\_//;
 674
 675                         my ($infn, $outfn, $fndocstring) = $self->PythonFunction($d, $interface->{NAME}, $prettyname);
 676
 677                         push (@fns, [$infn, $outfn, "dcerpc_$d->{NAME}_r", $prettyname, $fndocstring, $d->{OPNUM}]);
 678                 }
 679
 680                 $self->pidl("const struct PyNdrRpcMethodDef py_ndr_$interface->{NAME}\_methods[] = {");
 681                 $self->indent;
 682                 foreach my $d (@fns) {
 683                         my ($infn, $outfn, $callfn, $prettyname, $docstring, $opnum) = @$d;
 684                         $self->pidl("{ \"$prettyname\", $docstring, (py_dcerpc_call_fn)$callfn, (py_data_pack_fn)$infn, (py_data_unpack_fn)$outfn, $opnum, &ndr_table_$interface->{NAME} },");
 685                 }
 686                 $self->pidl("{ NULL }");
 687                 $self->deindent;
 688                 $self->pidl("};");
 689                 $self->pidl("");
 690
 691                 $self->pidl("static PyObject *interface_$interface->{NAME}_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)");
 692                 $self->pidl("{");
 693                 $self->indent;
 694                 $self->pidl("return py_dcerpc_interface_init_helper(type, args, kwargs, &ndr_table_$interface->{NAME});");
 695                 $self->deindent;
 696                 $self->pidl("}");
 697
 698                 $self->pidl("");
 699
 700                 my $signature =
 701 "\"$interface->{NAME}(binding, lp_ctx=None, credentials=None) -> connection\\n\"
 702 \"\\n\"
 703 \"binding should be a DCE/RPC binding string (for example: ncacn_ip_tcp:127.0.0.1)\\n\"
 704 \"lp_ctx should be a path to a smb.conf file or a param.LoadParm object\\n\"
 705 \"credentials should be a credentials.Credentials object.\\n\\n\"";
 706
 707                 my $docstring = $self->DocString($interface, $interface->{NAME});
 708
 709                 if ($docstring) {
 710                         $docstring = "$signature$docstring";
 711                 } else {
 712                         $docstring = $signature;
 713                 }
 714
 715                 $self->pidl("static PyTypeObject $interface->{NAME}_InterfaceType = {");
 716                 $self->indent;
 717                 $self->pidl("PyObject_HEAD_INIT(NULL) 0,");
 718                 $self->pidl(".tp_name = \"$basename.$interface->{NAME}\",");
 719                 $self->pidl(".tp_basicsize = sizeof(dcerpc_InterfaceObject),");
 720                 $self->pidl(".tp_base = &dcerpc_InterfaceType,");
 721                 $self->pidl(".tp_doc = $docstring,");
 722                 $self->pidl(".tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,");
 723                 $self->pidl(".tp_new = interface_$interface->{NAME}_new,");
 724                 $self->deindent;
 725                 $self->pidl("};");
 726
 727                 $self->pidl("");
 728
 729                 $self->register_module_typeobject($interface->{NAME}, "&$interface->{NAME}_InterfaceType");
 730                 $self->register_module_readycode(["if (!PyInterface_AddNdrRpcMethods(&$interface->{NAME}_InterfaceType, py_ndr_$interface->{NAME}\_methods))", "\treturn;", ""]);
 731         }
 732
 733         $self->pidl_hdr("\n");
 734 }
 735
 736 sub register_module_method($$$$$)
 737 {
 738         my ($self, $fn_name, $pyfn_name, $flags, $doc) = @_;
 739
 740         push (@{$self->{module_methods}}, [$fn_name, $pyfn_name, $flags, $doc])
 741 }
 742
 743 sub register_module_typeobject($$$)
 744 {
 745         my ($self, $name, $py_name) = @_;
 746
 747         $self->register_module_object($name, "(PyObject *)(void *)$py_name");
 748
 749         $self->check_ready_type($py_name);
 750
 751         $self->register_patch_type_call($name, $py_name);
 752 }
 753
 754 sub check_ready_type($$)
 755 {
 756         my ($self, $py_name) = @_;
 757         push (@{$self->{ready_types}}, $py_name) unless (grep(/^$py_name$/,@{$self->{ready_types}}));
 758 }
 759
 760 sub register_module_import($$)
 761 {
 762         my ($self, $basename) = @_;
 763
 764         push (@{$self->{module_imports}}, $basename) unless (grep(/^$basename$/,@{$self->{module_imports}}));
 765 }
 766
 767 sub use_type_variable($$)
 768 {
 769         my ($self, $orig_ctype) = @_;
 770         # FIXME: Have a global lookup table for types that look different on the
 771         # wire than they are named in C?
 772         if ($orig_ctype->{NAME} eq "dom_sid2") {
 773                 $orig_ctype->{NAME} = "dom_sid";
 774         }
 775         my $ctype = resolveType($orig_ctype);
 776         unless (defined($ctype->{BASEFILE})) {
 777                 return undef;
 778         }
 779         # If this is an external type, make sure we do the right imports.
 780         if (($ctype->{BASEFILE} ne $self->{BASENAME})) {
 781                 $self->register_module_import($ctype->{BASEFILE});
 782                 unless (defined($self->{type_imports}->{$ctype->{NAME}})) {
 783                         $self->{type_imports}->{$ctype->{NAME}} = $ctype->{BASEFILE};
 784                 }
 785                 return "$ctype->{NAME}_Type";
 786         }
 787         return "&$ctype->{NAME}_Type";
 788 }
 789
 790 sub register_patch_type_call($$$)
 791 {
 792         my ($self, $typename, $cvar) = @_;
 793
 794         push(@{$self->{patch_type_calls}}, [$typename, $cvar]);
 795
 796 }
 797
 798 sub register_module_readycode($$)
 799 {
 800         my ($self, $code) = @_;
 801
 802         push (@{$self->{readycode}}, @$code);
 803 }
 804
 805 sub register_module_object($$$)
 806 {
 807         my ($self, $name, $py_name) = @_;
 808
 809         push (@{$self->{module_objects}}, [$name, $py_name])
 810 }
 811
 812 sub assign($$$)
 813 {
 814         my ($self, $dest, $src) = @_;
 815         if ($dest =~ /^\&/ and $src eq "NULL") {
 816                 $self->pidl("memset($dest, 0, sizeof(" . get_value_of($dest) . "));");
 817         } elsif ($dest =~ /^\&/) {
 818                 $self->pidl("memcpy($dest, $src, sizeof(" . get_value_of($dest) . "));");
 819         } else {
 820                 $self->pidl("$dest = $src;");
 821         }
 822 }
 823
 824 sub ConvertObjectFromPythonData($$$$$$;$)
 825 {
 826         my ($self, $mem_ctx, $cvar, $ctype, $target, $fail, $location) = @_;
 827
 828         fatal($location, "undef type for $cvar") unless(defined($ctype));
 829
 830         $ctype = resolveType($ctype);
 831
 832         my $actual_ctype = $ctype;
 833         if ($actual_ctype->{TYPE} eq "TYPEDEF") {
 834                 $actual_ctype = $actual_ctype->{DATA};
 835         }
 836
 837         if ($actual_ctype->{TYPE} eq "ENUM" or $actual_ctype->{TYPE} eq "BITMAP") {
 838                 $self->pidl("PY_CHECK_TYPE(&PyInt_Type, $cvar, $fail);");
 839                 $self->pidl("$target = PyInt_AsLong($cvar);");
 840                 return;
 841         }
 842         if ($actual_ctype->{TYPE} eq "SCALAR" ) {
 843                 if (expandAlias($actual_ctype->{NAME}) =~ /^(u?int64|hyper|dlong|udlong|udlongr|NTTIME_hyper|NTTIME|NTTIME_1sec)$/) {
 844                         $self->pidl("if (PyObject_TypeCheck($cvar, &PyLong_Type)) {");
 845                         $self->indent;
 846                         $self->pidl("$target = PyLong_AsLongLong($cvar);");
 847                         $self->deindent;
 848                         $self->pidl("} else {");
 849                         $self->indent;
 850                         $self->pidl("if (PyObject_TypeCheck($cvar, &PyInt_Type)) {");
 851                         $self->indent;
 852                         $self->pidl("$target = PyInt_AsLong($cvar);");
 853                         $self->deindent;
 854                         $self->pidl("} else {");
 855                         $self->indent;
 856                         $self->pidl("PyErr_Format(PyExc_TypeError, \"Expected type %s or %s\",\\");
 857                         $self->pidl("  PyInt_Type.tp_name, PyLong_Type.tp_name);");
 858                         $self->pidl($fail);
 859                         $self->deindent;
 860                         $self->pidl("}");
 861                         $self->deindent;
 862                         $self->pidl("}");
 863                         return;
 864                 }
 865                 if (expandAlias($actual_ctype->{NAME}) =~ /^(char|u?int[0-9]*|time_t)$/) {
 866                         $self->pidl("PY_CHECK_TYPE(&PyInt_Type, $cvar, $fail);");
 867                         $self->pidl("$target = PyInt_AsLong($cvar);");
 868                         return;
 869                 }
 870         }
 871
 872         if ($actual_ctype->{TYPE} eq "STRUCT" or $actual_ctype->{TYPE} eq "INTERFACE") {
 873                 my $ctype_name = $self->use_type_variable($ctype);
 874                 unless (defined ($ctype_name)) {
 875                         error($location, "Unable to determine origin of type `" . mapTypeName($ctype) . "'");
 876                         $self->pidl("PyErr_SetString(PyExc_TypeError, \"Can not convert C Type " . mapTypeName($ctype) . " to Python\");");
 877                         return;
 878                 }
 879                 $self->pidl("PY_CHECK_TYPE($ctype_name, $cvar, $fail);");
 880                 $self->assign($target, "talloc_reference($mem_ctx, (".mapTypeName($ctype)." *)py_talloc_get_ptr($cvar))");
 881                 return;
 882         }
 883
 884         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "DATA_BLOB") {
 885                 $self->pidl("$target = data_blob_talloc($mem_ctx, PyString_AsString($cvar), PyString_Size($cvar));");
 886                 return;
 887         }
 888
 889         if ($actual_ctype->{TYPE} eq "SCALAR" and
 890                 ($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")) {
 891                 $self->pidl("$target = talloc_strdup($mem_ctx, PyString_AsString($cvar));");
 892                 return;
 893         }
 894
 895         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "ipv4address") {
 896                 $self->pidl("$target = PyString_AsString($cvar);");
 897                 return;
 898                 }
 899
 900         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "dnsp_name") {
 901                 $self->pidl("$target = PyString_AsString($cvar);");
 902                 return;
 903                 }
 904
 905
 906         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "NTSTATUS") {
 907                 $self->pidl("$target = NT_STATUS(PyInt_AsLong($cvar));");
 908                 return;
 909         }
 910
 911         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "WERROR") {
 912                 $self->pidl("$target = W_ERROR(PyInt_AsLong($cvar));");
 913                 return;
 914         }
 915
 916         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "string_array") {
 917                 $self->pidl("$target = PyCObject_AsVoidPtr($cvar);");
 918                 return;
 919         }
 920
 921         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "pointer") {
 922                 $self->assign($target, "PyCObject_AsVoidPtr($cvar)");
 923                 return;
 924         }
 925
 926         fatal($location, "unknown type `$actual_ctype->{TYPE}' for ".mapTypeName($ctype) . ": $cvar");
 927
 928 }
 929
 930 sub ConvertObjectFromPythonLevel($$$$$$$$$)
 931 {
 932         my ($self, $env, $mem_ctx, $mem_ref, $py_var, $e, $l, $var_name, $fail) = @_;
 933         my $nl = GetNextLevel($e, $l);
 934
 935         if ($l->{TYPE} eq "POINTER") {
 936                 if ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE})) {
 937                         $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $mem_ref, $py_var, $e, $nl, $var_name, $fail);
 938                         return;
 939                 }
 940                 if ($l->{POINTER_TYPE} ne "ref") {
 941                         $self->pidl("if ($py_var == Py_None) {");
 942                         $self->indent;
 943                         $self->pidl("$var_name = NULL;");
 944                         $self->deindent;
 945                         $self->pidl("} else {");
 946                         $self->indent;
 947                 }
 948                 # if we want to handle more than one level of pointer in python interfaces
 949                 # then this is where we would need to allocate it
 950                 if ($l->{POINTER_TYPE} eq "ref") {
 951                         $self->pidl("$var_name = talloc_ptrtype($mem_ctx, $var_name);");
 952                 } else {
 953                         $self->pidl("$var_name = NULL;");
 954                 }
 955                 $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $mem_ref, $py_var, $e, $nl, get_value_of($var_name), $fail);
 956                 if ($l->{POINTER_TYPE} ne "ref") {
 957                         $self->deindent;
 958                         $self->pidl("}");
 959                 }
 960         } elsif ($l->{TYPE} eq "ARRAY") {
 961                 my $pl = GetPrevLevel($e, $l);
 962                 if ($pl && $pl->{TYPE} eq "POINTER") {
 963                         $var_name = get_pointer_to($var_name);
 964                 }
 965
 966                 if (is_charset_array($e, $l)) {
 967                         $self->pidl("PY_CHECK_TYPE(&PyUnicode_Type, $py_var, $fail);");
 968                         # FIXME: Use Unix charset setting rather than utf-8
 969                         $self->pidl($var_name . " = PyString_AsString(PyUnicode_AsEncodedString($py_var, \"utf-8\", \"ignore\"));");
 970                 } else {
 971                         my $counter = "$e->{NAME}_cntr_$l->{LEVEL_INDEX}";
 972                         $self->pidl("PY_CHECK_TYPE(&PyList_Type, $py_var, $fail);");
 973                         $self->pidl("{");
 974                         $self->indent;
 975                         $self->pidl("int $counter;");
 976                         if (ArrayDynamicallyAllocated($e, $l)) {
 977                                 $self->pidl("$var_name = talloc_array_ptrtype($mem_ctx, $var_name, PyList_Size($py_var));");
 978                                 $self->pidl("if (!$var_name) { $fail; }");
 979                                 $self->pidl("talloc_set_name_const($var_name, \"ARRAY: $var_name\");");
 980                                 if ($mem_ref) {
 981                                         $self->pidl("if (!talloc_reference($mem_ref, $var_name)) { $fail }");
 982                                 }
 983                         }
 984                         $self->pidl("for ($counter = 0; $counter < PyList_Size($py_var); $counter++) {");
 985                         $self->indent;
 986                         $self->ConvertObjectFromPythonLevel($env, $var_name, undef, "PyList_GetItem($py_var, $counter)", $e, GetNextLevel($e, $l), $var_name."[$counter]", $fail);
 987                         $self->deindent;
 988                         $self->pidl("}");
 989                         $self->deindent;
 990                         $self->pidl("}");
 991                 }
 992         } elsif ($l->{TYPE} eq "DATA") {
 993
 994                 if (not Parse::Pidl::Typelist::is_scalar($l->{DATA_TYPE})) {
 995                         $var_name = get_pointer_to($var_name);
 996                 }
 997                 $self->ConvertObjectFromPythonData($mem_ctx, $py_var, $l->{DATA_TYPE}, $var_name, $fail, $e->{ORIGINAL});
 998         } elsif ($l->{TYPE} eq "SWITCH") {
 999                 $var_name = get_pointer_to($var_name);
1000                 my $switch = ParseExpr($l->{SWITCH_IS}, $env, $e);
1001                 my $switch_ptr = "$e->{NAME}_switch_$l->{LEVEL_INDEX}";
1002                 $self->pidl("{");
1003                 $self->indent;
1004                 $self->pidl("void *$switch_ptr;");
1005                 $self->pidl("$switch_ptr = py_export_" . GetNextLevel($e, $l)->{DATA_TYPE} . "($mem_ctx, $switch, $py_var);");
1006                 $self->pidl("if ($switch_ptr == NULL) { $fail }");
1007                 $self->assign($var_name, "$switch_ptr");
1008                 $self->deindent;
1009                 $self->pidl("}");
1010         } elsif ($l->{TYPE} eq "SUBCONTEXT") {
1011                 $self->ConvertObjectFromPythonLevel($env, $mem_ctx, undef, $py_var, $e, GetNextLevel($e, $l), $var_name, $fail);
1012         } else {
1013                 fatal($e->{ORIGINAL}, "unknown level type $l->{TYPE}");
1014         }
1015 }
1016
1017 sub ConvertObjectFromPython($$$$$$$$)
1018 {
1019         my ($self, $env, $mem_ctx, $mem_ref, $ctype, $cvar, $target, $fail) = @_;
1020
1021         $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $mem_ref, $cvar, $ctype, $ctype->{LEVELS}[0], $target, $fail);
1022 }
1023
1024 sub ConvertScalarToPython($$$)
1025 {
1026         my ($self, $ctypename, $cvar) = @_;
1027
1028         die("expected string for $cvar, not $ctypename") if (ref($ctypename) eq "HASH");
1029
1030         $ctypename = expandAlias($ctypename);
1031
1032         if ($ctypename =~ /^(u?int64|hyper|dlong|udlong|udlongr|NTTIME_hyper|NTTIME|NTTIME_1sec)$/) {
1033                 return "PyLong_FromLongLong($cvar)";
1034         }
1035
1036         if ($ctypename =~ /^(char|u?int[0-9]*|time_t)$/) {
1037                 return "PyInt_FromLong($cvar)";
1038         }
1039
1040         if ($ctypename eq "DATA_BLOB") {
1041                 return "PyString_FromStringAndSize((char *)($cvar).data, ($cvar).length)";
1042         }
1043
1044         if ($ctypename eq "NTSTATUS") {
1045                 return "PyErr_FromNTSTATUS($cvar)";
1046         }
1047
1048         if ($ctypename eq "WERROR") {
1049                 return "PyErr_FromWERROR($cvar)";
1050         }
1051
1052         if (($ctypename eq "string" or $ctypename eq "nbt_string" or $ctypename eq "nbt_name" or $ctypename eq "wrepl_nbt_name")) {
1053                 return "PyString_FromString($cvar)";
1054         }
1055
1056         # Not yet supported
1057         if ($ctypename eq "string_array") { return "PyCObject_FromTallocPtr($cvar)"; }
1058         if ($ctypename eq "ipv4address") { return "PyString_FromString($cvar)"; }
1059         if ($ctypename eq "dnsp_name") { return "PyString_FromString($cvar)"; }
1060         if ($ctypename eq "pointer") {
1061                 return "PyCObject_FromTallocPtr($cvar)";
1062         }
1063
1064         die("Unknown scalar type $ctypename");
1065 }
1066
1067 sub ConvertObjectToPythonData($$$$$;$)
1068 {
1069         my ($self, $mem_ctx, $ctype, $cvar, $location) = @_;
1070
1071         die("undef type for $cvar") unless(defined($ctype));
1072
1073         $ctype = resolveType($ctype);
1074
1075         my $actual_ctype = $ctype;
1076         if ($actual_ctype->{TYPE} eq "TYPEDEF") {
1077                 $actual_ctype = $actual_ctype->{DATA};
1078         }
1079
1080         if ($actual_ctype->{TYPE} eq "ENUM") {
1081                 return $self->ConvertScalarToPython(Parse::Pidl::Typelist::enum_type_fn($actual_ctype), $cvar);
1082         } elsif ($actual_ctype->{TYPE} eq "BITMAP") {
1083                 return $self->ConvertScalarToPython(Parse::Pidl::Typelist::bitmap_type_fn($actual_ctype), $cvar);
1084         } elsif ($actual_ctype->{TYPE} eq "SCALAR") {
1085                 return $self->ConvertScalarToPython($actual_ctype->{NAME}, $cvar);
1086         } elsif ($actual_ctype->{TYPE} eq "UNION") {
1087                 fatal($ctype, "union without discriminant: " . mapTypeName($ctype) . ": $cvar");
1088         } elsif ($actual_ctype->{TYPE} eq "STRUCT" or $actual_ctype->{TYPE} eq "INTERFACE") {
1089                 my $ctype_name = $self->use_type_variable($ctype);
1090                 unless (defined($ctype_name)) {
1091                         error($location, "Unable to determine origin of type `" . mapTypeName($ctype) . "'");
1092                         return "NULL"; # FIXME!
1093                 }
1094                 return "py_talloc_reference_ex($ctype_name, $mem_ctx, $cvar)";
1095         }
1096
1097         fatal($location, "unknown type $actual_ctype->{TYPE} for ".mapTypeName($ctype) . ": $cvar");
1098 }
1099
1100 sub fail_on_null($$$)
1101 {
1102         my ($self, $var, $fail) = @_;
1103         $self->pidl("if ($var == NULL) {");
1104         $self->indent;
1105         $self->pidl($fail);
1106         $self->deindent;
1107         $self->pidl("}");
1108 }
1109
1110 sub ConvertObjectToPythonLevel($$$$$$)
1111 {
1112         my ($self, $mem_ctx, $env, $e, $l, $var_name, $py_var, $fail) = @_;
1113         my $nl = GetNextLevel($e, $l);
1114
1115         if ($l->{TYPE} eq "POINTER") {
1116                 if ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE})) {
1117                         $self->ConvertObjectToPythonLevel($var_name, $env, $e, $nl, $var_name, $py_var, $fail);
1118                         return;
1119                 }
1120                 if ($l->{POINTER_TYPE} ne "ref") {
1121                         $self->pidl("if ($var_name == NULL) {");
1122                         $self->indent;
1123                         $self->pidl("$py_var = Py_None;");
1124                         $self->pidl("Py_INCREF($py_var);");
1125                         $self->deindent;
1126                         $self->pidl("} else {");
1127                         $self->indent;
1128                 }
1129                 $self->ConvertObjectToPythonLevel($var_name, $env, $e, $nl, get_value_of($var_name), $py_var, $fail);
1130                 if ($l->{POINTER_TYPE} ne "ref") {
1131                         $self->deindent;
1132                         $self->pidl("}");
1133                 }
1134         } elsif ($l->{TYPE} eq "ARRAY") {
1135                 my $pl = GetPrevLevel($e, $l);
1136                 if ($pl && $pl->{TYPE} eq "POINTER") {
1137                         $var_name = get_pointer_to($var_name);
1138                 }
1139
1140                 if (is_charset_array($e, $l)) {
1141                         # FIXME: Use Unix charset setting rather than utf-8
1142                         $self->pidl("$py_var = PyUnicode_Decode($var_name, strlen($var_name), \"utf-8\", \"ignore\");");
1143                 } else {
1144                         die("No SIZE_IS for array $var_name") unless (defined($l->{SIZE_IS}));
1145                         my $length = $l->{SIZE_IS};
1146                         if (defined($l->{LENGTH_IS})) {
1147                                 $length = $l->{LENGTH_IS};
1148                         }
1149
1150                         $length = ParseExpr($length, $env, $e);
1151                         $self->pidl("$py_var = PyList_New($length);");
1152                         $self->fail_on_null($py_var, $fail);
1153                         $self->pidl("{");
1154                         $self->indent;
1155                         my $counter = "$e->{NAME}_cntr_$l->{LEVEL_INDEX}";
1156                         $self->pidl("int $counter;");
1157                         $self->pidl("for ($counter = 0; $counter < $length; $counter++) {");
1158                         $self->indent;
1159                         my $member_var = "py_$e->{NAME}_$l->{LEVEL_INDEX}";
1160                         $self->pidl("PyObject *$member_var;");
1161                         $self->ConvertObjectToPythonLevel($var_name, $env, $e, GetNextLevel($e, $l), $var_name."[$counter]", $member_var, $fail);
1162                         $self->pidl("PyList_SetItem($py_var, $counter, $member_var);");
1163                         $self->deindent;
1164                         $self->pidl("}");
1165                         $self->deindent;
1166                         $self->pidl("}");
1167                 }
1168         } elsif ($l->{TYPE} eq "SWITCH") {
1169                 $var_name = get_pointer_to($var_name);
1170                 my $switch = ParseExpr($l->{SWITCH_IS}, $env, $e);
1171                 $self->pidl("$py_var = py_import_" . GetNextLevel($e, $l)->{DATA_TYPE} . "($mem_ctx, $switch, $var_name);");
1172                 $self->fail_on_null($py_var, $fail);
1173
1174         } elsif ($l->{TYPE} eq "DATA") {
1175                 if (not Parse::Pidl::Typelist::is_scalar($l->{DATA_TYPE})) {
1176                         $var_name = get_pointer_to($var_name);
1177                 }
1178                 my $conv = $self->ConvertObjectToPythonData($mem_ctx, $l->{DATA_TYPE}, $var_name, $e->{ORIGINAL});
1179                 $self->pidl("$py_var = $conv;");
1180         } elsif ($l->{TYPE} eq "SUBCONTEXT") {
1181                 $self->ConvertObjectToPythonLevel($mem_ctx, $env, $e, GetNextLevel($e, $l), $var_name, $py_var, $fail);
1182         } else {
1183                 fatal($e->{ORIGINAL}, "Unknown level type $l->{TYPE} $var_name");
1184         }
1185 }
1186
1187 sub ConvertObjectToPython($$$$$$)
1188 {
1189         my ($self, $mem_ctx, $env, $ctype, $cvar, $py_var, $fail) = @_;
1190
1191         $self->ConvertObjectToPythonLevel($mem_ctx, $env, $ctype, $ctype->{LEVELS}[0], $cvar, $py_var, $fail);
1192 }
1193
1194 sub Parse($$$$$)
1195 {
1196     my($self,$basename,$ndr,$ndr_hdr,$hdr) = @_;
1197
1198         $self->{BASENAME} = $basename;
1199
1200     $self->pidl_hdr("
1201 /* Python wrapper functions auto-generated by pidl */
1202 #include <Python.h>
1203 #include \"includes.h\"
1204 #include \"lib/talloc/pytalloc.h\"
1205 #include \"librpc/rpc/pyrpc.h\"
1206 #include \"$hdr\"
1207 #include \"$ndr_hdr\"
1208
1209 ");
1210
1211         foreach my $x (@$ndr) {
1212                 ($x->{TYPE} eq "IMPORT") && $self->Import(@{$x->{PATHS}});
1213             ($x->{TYPE} eq "INTERFACE") && $self->Interface($x, $basename);
1214         }
1215
1216         $self->pidl("static PyMethodDef $basename\_methods[] = {");
1217         $self->indent;
1218         foreach (@{$self->{module_methods}}) {
1219                 my ($fn_name, $pyfn_name, $flags, $doc) = @$_;
1220                 $self->pidl("{ \"$fn_name\", (PyCFunction)$pyfn_name, $flags, $doc },");
1221         }
1222
1223         $self->pidl("{ NULL, NULL, 0, NULL }");
1224         $self->deindent;
1225         $self->pidl("};");
1226
1227         $self->pidl("");
1228
1229         $self->pidl("void init$basename(void)");
1230         $self->pidl("{");
1231         $self->indent;
1232         $self->pidl("PyObject *m;");
1233         foreach (@{$self->{module_imports}}) {
1234                 $self->pidl("PyObject *dep_$_;");
1235         }
1236         $self->pidl("");
1237
1238         foreach (@{$self->{module_imports}}) {
1239                 $self->pidl("dep_$_ = PyImport_ImportModule(\"samba.dcerpc.$_\");");
1240                 $self->pidl("if (dep_$_ == NULL)");
1241                 $self->pidl("\treturn;");
1242                 $self->pidl("");
1243         }
1244
1245         foreach (keys %{$self->{type_imports}}) {
1246                 my $basefile = $self->{type_imports}->{$_};
1247                 $self->pidl_hdr("static PyTypeObject *$_\_Type;\n");
1248                 my $pretty_name = PrettifyTypeName($_, $basefile);
1249                 $self->pidl("$_\_Type = (PyTypeObject *)PyObject_GetAttrString(dep_$basefile, \"$pretty_name\");");
1250                 $self->pidl("if ($_\_Type == NULL)");
1251                 $self->pidl("\treturn;");
1252                 $self->pidl("");
1253         }
1254
1255         foreach (@{$self->{ready_types}}) {
1256                 $self->pidl("if (PyType_Ready($_) < 0)");
1257                 $self->pidl("\treturn;");
1258         }
1259
1260         $self->pidl($_) foreach (@{$self->{readycode}});
1261
1262         foreach (@{$self->{patch_type_calls}}) {
1263                 my ($typename, $cvar) = @$_;
1264                 $self->pidl("#ifdef PY_".uc($typename)."_PATCH");
1265                 $self->pidl("PY_".uc($typename)."_PATCH($cvar);");
1266                 $self->pidl("#endif");
1267         }
1268
1269         $self->pidl("");
1270
1271         $self->pidl("m = Py_InitModule3(\"$basename\", $basename\_methods, \"$basename DCE/RPC\");");
1272         $self->pidl("if (m == NULL)");
1273         $self->pidl("\treturn;");
1274         $self->pidl("");
1275         foreach my $name (keys %{$self->{constants}}) {
1276                 my $py_obj;
1277                 my ($ctype, $cvar) = @{$self->{constants}->{$name}};
1278                 if ($cvar =~ /^[0-9]+$/ or $cvar =~ /^0x[0-9a-fA-F]+$/) {
1279                         $py_obj = "PyInt_FromLong($cvar)";
1280                 } elsif ($cvar =~ /^".*"$/) {
1281                         $py_obj = "PyString_FromString($cvar)";
1282                 } else {
1283                         $py_obj = $self->ConvertObjectToPythonData("NULL", expandAlias($ctype), $cvar, undef);
1284                 }
1285
1286                 $self->pidl("PyModule_AddObject(m, \"$name\", $py_obj);");
1287         }
1288
1289         foreach (@{$self->{module_objects}}) {
1290                 my ($object_name, $c_name) = @$_;
1291                 $self->pidl("Py_INCREF($c_name);");
1292                 $self->pidl("PyModule_AddObject(m, \"$object_name\", $c_name);");
1293         }
1294
1295         $self->pidl("#ifdef PY_MOD_".uc($basename)."_PATCH");
1296         $self->pidl("PY_MOD_".uc($basename)."_PATCH(m);");
1297         $self->pidl("#endif");
1298
1299         $self->pidl("");
1300         $self->deindent;
1301         $self->pidl("}");
1302     return ($self->{res_hdr} . $self->{res});
1303 }
1304
1305 1;