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