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($$$$)
 111 {
 112         my ($self, $mem_ctx, $type, $switch, $name) = @_;
 113
 114         $self->pidl("PyObject *ret;");
 115         $self->pidl("");
 116
 117         $self->pidl("switch ($switch) {");
 118         $self->indent;
 119
 120         foreach my $e (@{$type->{ELEMENTS}}) {
 121                 $self->pidl("$e->{CASE}:");
 122
 123                 $self->indent;
 124
 125                 if ($e->{NAME}) {
 126                         $self->ConvertObjectToPython($mem_ctx, {}, $e, "$name->$e->{NAME}", "ret", "return NULL;");
 127                 } else {
 128                         $self->pidl("ret = Py_None;");
 129                 }
 130
 131                 $self->pidl("return ret;");
 132                 $self->pidl("");
 133
 134                 $self->deindent;
 135         }
 136
 137         $self->deindent;
 138         $self->pidl("}");
 139
 140         $self->pidl("PyErr_SetString(PyExc_TypeError, \"unknown union level\");");
 141         $self->pidl("return NULL;");
 142 }
 143
 144 sub FromPythonToUnionFunction($$$$$)
 145 {
 146         my ($self, $type, $typename, $switch, $mem_ctx, $name) = @_;
 147
 148         my $has_default = 0;
 149
 150         $self->pidl("$typename *ret = talloc_zero($mem_ctx, $typename);");
 151
 152         $self->pidl("switch ($switch) {");
 153         $self->indent;
 154
 155         foreach my $e (@{$type->{ELEMENTS}}) {
 156                 $self->pidl("$e->{CASE}:");
 157                 if ($e->{CASE} eq "default") { $has_default = 1; }
 158                 $self->indent;
 159                 if ($e->{NAME}) {
 160                         $self->ConvertObjectFromPython({}, $mem_ctx, $e, $name, "ret->$e->{NAME}", "talloc_free(ret); return NULL;");
 161                 }
 162                 $self->pidl("break;");
 163                 $self->deindent;
 164                 $self->pidl("");
 165         }
 166
 167         if (!$has_default) {
 168                 $self->pidl("default:");
 169                 $self->indent;
 170                 $self->pidl("PyErr_SetString(PyExc_TypeError, \"invalid union level value\");");
 171                 $self->pidl("talloc_free(ret);");
 172                 $self->pidl("ret = NULL;");
 173                 $self->deindent;
 174         }
 175
 176         $self->deindent;
 177         $self->pidl("}");
 178         $self->pidl("");
 179         $self->pidl("return ret;");
 180 }
 181
 182 sub PythonStruct($$$$$$)
 183 {
 184         my ($self, $modulename, $prettyname, $name, $cname, $d) = @_;
 185
 186         my $env = GenerateStructEnv($d, "object");
 187
 188         $self->pidl("");
 189
 190         my $getsetters = "NULL";
 191
 192         if ($#{$d->{ELEMENTS}} > -1) {
 193                 foreach my $e (@{$d->{ELEMENTS}}) {
 194                         my $varname = "object->$e->{NAME}";
 195                         $self->pidl("static PyObject *py_$name\_get_$e->{NAME}(PyObject *obj, void *closure)");
 196                         $self->pidl("{");
 197                         $self->indent;
 198                         $self->pidl("$cname *object = ($cname *)py_talloc_get_ptr(obj);");
 199                         $self->pidl("PyObject *py_$e->{NAME};");
 200                         $self->ConvertObjectToPython("py_talloc_get_mem_ctx(obj)", $env, $e, $varname, "py_$e->{NAME}", "return NULL;");
 201                         $self->pidl("return py_$e->{NAME};");
 202                         $self->deindent;
 203                         $self->pidl("}");
 204                         $self->pidl("");
 205
 206                         $self->pidl("static int py_$name\_set_$e->{NAME}(PyObject *py_obj, PyObject *value, void *closure)");
 207                         $self->pidl("{");
 208                         $self->indent;
 209                         $self->pidl("$cname *object = ($cname *)py_talloc_get_ptr(py_obj);");
 210                         my $mem_ctx = "py_talloc_get_mem_ctx(py_obj)";
 211                         my $l = $e->{LEVELS}[0];
 212                         my $nl = GetNextLevel($e, $l);
 213                         if ($l->{TYPE} eq "POINTER" and
 214                                 not ($nl->{TYPE} eq "ARRAY" and ($nl->{IS_FIXED} or is_charset_array($e, $nl))) and
 215                                 not ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE}))) {
 216                                 $self->pidl("talloc_free($varname);");
 217                         }
 218                         $self->ConvertObjectFromPython($env, $mem_ctx, $e, "value", $varname, "return -1;");
 219                         $self->pidl("return 0;");
 220                         $self->deindent;
 221                         $self->pidl("}");
 222                         $self->pidl("");
 223                 }
 224
 225                 $getsetters = "py_$name\_getsetters";
 226                 $self->pidl("static PyGetSetDef ".$getsetters."[] = {");
 227                 $self->indent;
 228                 foreach my $e (@{$d->{ELEMENTS}}) {
 229                         $self->pidl("{ discard_const_p(char, \"$e->{NAME}\"), py_$name\_get_$e->{NAME}, py_$name\_set_$e->{NAME} },");
 230                 }
 231                 $self->pidl("{ NULL }");
 232                 $self->deindent;
 233                 $self->pidl("};");
 234                 $self->pidl("");
 235         }
 236
 237         $self->pidl("static PyObject *py_$name\_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)");
 238         $self->pidl("{");
 239         $self->indent;
 240         $self->pidl("return py_talloc_new($cname, type);");
 241         $self->deindent;
 242         $self->pidl("}");
 243         $self->pidl("");
 244
 245         my $py_methods = "NULL";
 246
 247         # If the struct is not public there ndr_pull/ndr_push functions will
 248         # be static so not callable from here
 249         if (has_property($d, "public")) {
 250                 $self->pidl("static PyObject *py_$name\_ndr_pack(PyObject *py_obj)");
 251                 $self->pidl("{");
 252                 $self->indent;
 253                 $self->pidl("$cname *object = ($cname *)py_talloc_get_ptr(py_obj);");
 254                 $self->pidl("DATA_BLOB blob;");
 255                 $self->pidl("enum ndr_err_code err;");
 256                 $self->pidl("err = ndr_push_struct_blob(&blob, py_talloc_get_mem_ctx(py_obj), NULL, object, (ndr_push_flags_fn_t)ndr_push_$name);");
 257                 $self->pidl("if (err != NDR_ERR_SUCCESS) {");
 258                 $self->indent;
 259                 $self->pidl("PyErr_SetNdrError(err);");
 260                 $self->pidl("return NULL;");
 261                 $self->deindent;
 262                 $self->pidl("}");
 263                 $self->pidl("");
 264                 $self->pidl("return PyString_FromStringAndSize((char *)blob.data, blob.length);");
 265                 $self->deindent;
 266                 $self->pidl("}");
 267                 $self->pidl("");
 268
 269                 $self->pidl("static PyObject *py_$name\_ndr_unpack(PyObject *py_obj, PyObject *args)");
 270                 $self->pidl("{");
 271                 $self->indent;
 272                 $self->pidl("$cname *object = ($cname *)py_talloc_get_ptr(py_obj);");
 273                 $self->pidl("DATA_BLOB blob;");
 274                 $self->pidl("enum ndr_err_code err;");
 275                 $self->pidl("if (!PyArg_ParseTuple(args, \"s#:__ndr_unpack__\", &blob.data, &blob.length))");
 276                 $self->pidl("\treturn NULL;");
 277                 $self->pidl("");
 278
 279                 # This disgusting hack works around the fact that ndr_pull_struct_blob_all will always fail on structures with relative pointers.
 280                 # So, map ndr_unpack to ndr_pull_struct_blob_all only if we don't have any relative pointers in this
 281                 my $got_relative = 0;
 282                 if ($#{$d->{ELEMENTS}} > -1) {
 283                         foreach my $e (@{$d->{ELEMENTS}}) {
 284                                 my $l = $e->{LEVELS}[0];
 285                                 if ($l->{TYPE} eq "POINTER" and ($l->{POINTER_TYPE} eq "relative")) {
 286                                         $got_relative = 1;
 287                                         last;
 288                                 }
 289                         }
 290                 }
 291                 if ($got_relative == 0) {
 292                         $self->pidl("err = ndr_pull_struct_blob_all(&blob, py_talloc_get_mem_ctx(py_obj), NULL, object, (ndr_pull_flags_fn_t)ndr_pull_$name);");
 293                 } else {
 294                         $self->pidl("err = ndr_pull_struct_blob(&blob, py_talloc_get_mem_ctx(py_obj), NULL, object, (ndr_pull_flags_fn_t)ndr_pull_$name);");
 295                 }
 296                 $self->pidl("if (err != NDR_ERR_SUCCESS) {");
 297                 $self->indent;
 298                 $self->pidl("PyErr_SetNdrError(err);");
 299                 $self->pidl("return NULL;");
 300                 $self->deindent;
 301                 $self->pidl("}");
 302                 $self->pidl("");
 303                 $self->pidl("Py_RETURN_NONE;");
 304                 $self->deindent;
 305                 $self->pidl("}");
 306                 $self->pidl("");
 307                 $py_methods = "py_$name\_methods";
 308                 $self->pidl("static PyMethodDef $py_methods\[] = {");
 309                 $self->indent;
 310                 $self->pidl("{ \"__ndr_pack__\", (PyCFunction)py_$name\_ndr_pack, METH_NOARGS, \"S.pack() -> blob\\nNDR pack\" },");
 311                 $self->pidl("{ \"__ndr_unpack__\", (PyCFunction)py_$name\_ndr_unpack, METH_VARARGS, \"S.unpack(blob) -> None\\nNDR unpack\" },");
 312                 $self->pidl("{ NULL, NULL, 0, NULL }");
 313                 $self->deindent;
 314                 $self->pidl("};");
 315                 $self->pidl("");
 316         }
 317
 318         $self->pidl_hdr("staticforward PyTypeObject $name\_Type;\n");
 319         $self->pidl("");
 320         my $docstring = $self->DocString($d, $name);
 321         my $typeobject = "$name\_Type";
 322         $self->pidl("static PyTypeObject $typeobject = {");
 323         $self->indent;
 324         $self->pidl("PyObject_HEAD_INIT(NULL) 0,");
 325         $self->pidl(".tp_name = \"$modulename.$prettyname\",");
 326         $self->pidl(".tp_basicsize = sizeof(py_talloc_Object),");
 327         $self->pidl(".tp_dealloc = py_talloc_dealloc,");
 328         $self->pidl(".tp_getset = $getsetters,");
 329         $self->pidl(".tp_repr = py_talloc_default_repr,");
 330         if ($docstring) {
 331                 $self->pidl(".tp_doc = $docstring,");
 332         }
 333         $self->pidl(".tp_methods = $py_methods,");
 334         $self->pidl(".tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,");
 335         $self->pidl(".tp_new = py_$name\_new,");
 336         $self->deindent;
 337         $self->pidl("};");
 338
 339         $self->pidl("");
 340
 341         return "&$typeobject";
 342 }
 343
 344 sub get_metadata_var($)
 345 {
 346         my ($e) = @_;
 347         sub get_var($) { my $x = shift; $x =~ s/\*//g; return $x; }
 348
 349          if (has_property($e, "length_is")) {
 350                 return get_var($e->{PROPERTIES}->{length_is});
 351          } elsif (has_property($e, "size_is")) {
 352                 return get_var($e->{PROPERTIES}->{size_is});
 353          }
 354
 355          return undef;
 356 }
 357
 358 sub find_metadata_args($)
 359 {
 360         my ($fn) = @_;
 361         my $metadata_args = { in => {}, out => {} };
 362
 363         # Determine arguments that are metadata for other arguments (size_is/length_is)
 364         foreach my $e (@{$fn->{ELEMENTS}}) {
 365                 foreach my $dir (@{$e->{DIRECTION}}) {
 366                          my $main = get_metadata_var($e);
 367                          if ($main) {
 368                                  $metadata_args->{$dir}->{$main} = $e->{NAME};
 369                          }
 370                  }
 371         }
 372
 373         return $metadata_args;
 374 }
 375
 376 sub PythonFunctionUnpackOut($$$)
 377 {
 378         my ($self, $fn, $fnname) = @_;
 379
 380         my $outfnname = "unpack_$fnname\_args_out";
 381         my $signature = "";
 382
 383         my $metadata_args = find_metadata_args($fn);
 384
 385         my $env = GenerateFunctionOutEnv($fn, "r->");
 386         my $result_size = 0;
 387
 388         $self->pidl("static PyObject *$outfnname(struct $fn->{NAME} *r)");
 389         $self->pidl("{");
 390         $self->indent;
 391         $self->pidl("PyObject *result = Py_None;");
 392         foreach my $e (@{$fn->{ELEMENTS}}) {
 393                 next unless (grep(/out/,@{$e->{DIRECTION}}));
 394                 next if (($metadata_args->{in}->{$e->{NAME}} and grep(/in/, @{$e->{DIRECTION}})) or
 395                          ($metadata_args->{out}->{$e->{NAME}}) and grep(/out/, @{$e->{DIRECTION}}));
 396                 $self->pidl("PyObject *py_$e->{NAME};");
 397                 $result_size++;
 398         }
 399
 400         if ($fn->{RETURN_TYPE}) {
 401                 $result_size++ unless ($fn->{RETURN_TYPE} eq "WERROR" or $fn->{RETURN_TYPE} eq "NTSTATUS");
 402         }
 403
 404         my $i = 0;
 405
 406         if ($result_size > 1) {
 407                 $self->pidl("result = PyTuple_New($result_size);");
 408                 $signature .= "(";
 409         } elsif ($result_size == 0) {
 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", $e, "py_$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
 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}", $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, (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 *)$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" or
 837                 $actual_ctype->{TYPE} eq "SCALAR" and (
 838                 expandAlias($actual_ctype->{NAME}) =~ /^(u?int[0-9]*|hyper|NTTIME|time_t|NTTIME_hyper|NTTIME_1sec|dlong|udlong|udlongr)$/)) {
 839                 $self->pidl("PY_CHECK_TYPE(&PyInt_Type, $cvar, $fail);");
 840                 $self->pidl("$target = PyInt_AsLong($cvar);");
 841                 return;
 842         }
 843
 844         if ($actual_ctype->{TYPE} eq "STRUCT" or $actual_ctype->{TYPE} eq "INTERFACE") {
 845                 my $ctype_name = $self->use_type_variable($ctype);
 846                 unless (defined ($ctype_name)) {
 847                         error($location, "Unable to determine origin of type `" . mapTypeName($ctype) . "'");
 848                         $self->pidl("PyErr_SetString(PyExc_TypeError, \"Can not convert C Type " . mapTypeName($ctype) . " to Python\");");
 849                         return;
 850                 }
 851                 $self->pidl("PY_CHECK_TYPE($ctype_name, $cvar, $fail);");
 852                 $self->assign($target, "py_talloc_get_ptr($cvar)");
 853                 return;
 854         }
 855
 856         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "DATA_BLOB") {
 857                 $self->pidl("$target = data_blob_talloc($mem_ctx, PyString_AsString($cvar), PyString_Size($cvar));");
 858                 return;
 859         }
 860
 861         if ($actual_ctype->{TYPE} eq "SCALAR" and
 862                 ($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")) {
 863                 $self->pidl("$target = talloc_strdup($mem_ctx, PyString_AsString($cvar));");
 864                 return;
 865         }
 866
 867         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "ipv4address") {
 868                 $self->pidl("$target = PyString_AsString($cvar);");
 869                 return;
 870                 }
 871
 872
 873         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "NTSTATUS") {
 874                 $self->pidl("$target = NT_STATUS(PyInt_AsLong($cvar));");
 875                 return;
 876         }
 877
 878         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "WERROR") {
 879                 $self->pidl("$target = W_ERROR(PyInt_AsLong($cvar));");
 880                 return;
 881         }
 882
 883         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "string_array") {
 884                 $self->pidl("$target = PyCObject_AsVoidPtr($cvar);");
 885                 return;
 886         }
 887
 888         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "pointer") {
 889                 $self->assign($target, "PyCObject_AsVoidPtr($cvar)");
 890                 return;
 891         }
 892
 893         fatal($location, "unknown type `$actual_ctype->{TYPE}' for ".mapTypeName($ctype) . ": $cvar");
 894
 895 }
 896
 897 sub ConvertObjectFromPythonLevel($$$$$$$$)
 898 {
 899         my ($self, $env, $mem_ctx, $py_var, $e, $l, $var_name, $fail) = @_;
 900         my $nl = GetNextLevel($e, $l);
 901
 902         if ($l->{TYPE} eq "POINTER") {
 903                 if ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE})) {
 904                         $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $py_var, $e, $nl, $var_name, $fail);
 905                         return;
 906                 }
 907                 if ($l->{POINTER_TYPE} ne "ref") {
 908                         $self->pidl("if ($py_var == Py_None) {");
 909                         $self->indent;
 910                         $self->pidl("$var_name = NULL;");
 911                         $self->deindent;
 912                         $self->pidl("} else {");
 913                         $self->indent;
 914                 }
 915                 $self->pidl("$var_name = talloc_ptrtype($mem_ctx, $var_name);");
 916                 $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $py_var, $e, $nl, get_value_of($var_name), $fail);
 917                 if ($l->{POINTER_TYPE} ne "ref") {
 918                         $self->deindent;
 919                         $self->pidl("}");
 920                 }
 921         } elsif ($l->{TYPE} eq "ARRAY") {
 922                 my $pl = GetPrevLevel($e, $l);
 923                 if ($pl && $pl->{TYPE} eq "POINTER") {
 924                         $var_name = get_pointer_to($var_name);
 925                 }
 926
 927                 if (is_charset_array($e, $l)) {
 928                         $self->pidl("PY_CHECK_TYPE(&PyUnicode_Type, $py_var, $fail);");
 929                         # FIXME: Use Unix charset setting rather than utf-8
 930                         $self->pidl($var_name . " = PyString_AsString(PyUnicode_AsEncodedString($py_var, \"utf-8\", \"ignore\"));");
 931                 } else {
 932                         my $counter = "$e->{NAME}_cntr_$l->{LEVEL_INDEX}";
 933                         $self->pidl("PY_CHECK_TYPE(&PyList_Type, $py_var, $fail);");
 934                         $self->pidl("{");
 935                         $self->indent;
 936                         $self->pidl("int $counter;");
 937                         if (ArrayDynamicallyAllocated($e, $l)) {
 938                                 $self->pidl("$var_name = talloc_array_ptrtype($mem_ctx, $var_name, PyList_Size($py_var));");
 939                         }
 940                         $self->pidl("for ($counter = 0; $counter < PyList_Size($py_var); $counter++) {");
 941                         $self->indent;
 942                         $self->ConvertObjectFromPythonLevel($env, $var_name, "PyList_GetItem($py_var, $counter)", $e, GetNextLevel($e, $l), $var_name."[$counter]", $fail);
 943                         $self->deindent;
 944                         $self->pidl("}");
 945                         $self->deindent;
 946                         $self->pidl("}");
 947                 }
 948         } elsif ($l->{TYPE} eq "DATA") {
 949
 950                 if (not Parse::Pidl::Typelist::is_scalar($l->{DATA_TYPE})) {
 951                         $var_name = get_pointer_to($var_name);
 952                 }
 953                 $self->ConvertObjectFromPythonData($mem_ctx, $py_var, $l->{DATA_TYPE}, $var_name, $fail, $e->{ORIGINAL});
 954         } elsif ($l->{TYPE} eq "SWITCH") {
 955                 $var_name = get_pointer_to($var_name);
 956                 my $switch = ParseExpr($l->{SWITCH_IS}, $env, $e);
 957                 $self->assign($var_name, "py_export_" . GetNextLevel($e, $l)->{DATA_TYPE} . "($mem_ctx, $switch, $py_var)");
 958         } elsif ($l->{TYPE} eq "SUBCONTEXT") {
 959                 $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $py_var, $e, GetNextLevel($e, $l), $var_name, $fail);
 960         } else {
 961                 fatal($e->{ORIGINAL}, "unknown level type $l->{TYPE}");
 962         }
 963 }
 964
 965 sub ConvertObjectFromPython($$$$$$$)
 966 {
 967         my ($self, $env, $mem_ctx, $ctype, $cvar, $target, $fail) = @_;
 968
 969         $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $cvar, $ctype, $ctype->{LEVELS}[0], $target, $fail);
 970 }
 971
 972 sub ConvertScalarToPython($$$)
 973 {
 974         my ($self, $ctypename, $cvar) = @_;
 975
 976         die("expected string for $cvar, not $ctypename") if (ref($ctypename) eq "HASH");
 977
 978         $ctypename = expandAlias($ctypename);
 979
 980         if ($ctypename =~ /^(char|u?int[0-9]*|hyper|dlong|udlong|udlongr|time_t|NTTIME_hyper|NTTIME|NTTIME_1sec)$/) {
 981                 return "PyInt_FromLong($cvar)";
 982         }
 983
 984         if ($ctypename eq "DATA_BLOB") {
 985                 return "PyString_FromStringAndSize((char *)($cvar).data, ($cvar).length)";
 986         }
 987
 988         if ($ctypename eq "NTSTATUS") {
 989                 return "PyErr_FromNTSTATUS($cvar)";
 990         }
 991
 992         if ($ctypename eq "WERROR") {
 993                 return "PyErr_FromWERROR($cvar)";
 994         }
 995
 996         if (($ctypename eq "string" or $ctypename eq "nbt_string" or $ctypename eq "nbt_name" or $ctypename eq "wrepl_nbt_name")) {
 997                 return "PyString_FromString($cvar)";
 998         }
 999
1000         # Not yet supported
1001         if ($ctypename eq "string_array") { return "PyCObject_FromVoidPtr($cvar, talloc_free)"; }
1002         if ($ctypename eq "ipv4address") { return "PyString_FromString($cvar)"; }
1003         if ($ctypename eq "pointer") {
1004                 return "PyCObject_FromVoidPtr($cvar, talloc_free)";
1005         }
1006
1007         die("Unknown scalar type $ctypename");
1008 }
1009
1010 sub ConvertObjectToPythonData($$$$$;$)
1011 {
1012         my ($self, $mem_ctx, $ctype, $cvar, $location) = @_;
1013
1014         die("undef type for $cvar") unless(defined($ctype));
1015
1016         $ctype = resolveType($ctype);
1017
1018         my $actual_ctype = $ctype;
1019         if ($actual_ctype->{TYPE} eq "TYPEDEF") {
1020                 $actual_ctype = $actual_ctype->{DATA};
1021         }
1022
1023         if ($actual_ctype->{TYPE} eq "ENUM") {
1024                 return $self->ConvertScalarToPython(Parse::Pidl::Typelist::enum_type_fn($actual_ctype), $cvar);
1025         } elsif ($actual_ctype->{TYPE} eq "BITMAP") {
1026                 return $self->ConvertScalarToPython(Parse::Pidl::Typelist::bitmap_type_fn($actual_ctype), $cvar);
1027         } elsif ($actual_ctype->{TYPE} eq "SCALAR") {
1028                 return $self->ConvertScalarToPython($actual_ctype->{NAME}, $cvar);
1029         } elsif ($actual_ctype->{TYPE} eq "UNION") {
1030                 fatal($ctype, "union without discriminant: " . mapTypeName($ctype) . ": $cvar");
1031         } elsif ($actual_ctype->{TYPE} eq "STRUCT" or $actual_ctype->{TYPE} eq "INTERFACE") {
1032                 my $ctype_name = $self->use_type_variable($ctype);
1033                 unless (defined($ctype_name)) {
1034                         error($location, "Unable to determine origin of type `" . mapTypeName($ctype) . "'");
1035                         return "NULL"; # FIXME!
1036                 }
1037                 return "py_talloc_reference_ex($ctype_name, $mem_ctx, $cvar)";
1038         }
1039
1040         fatal($location, "unknown type $actual_ctype->{TYPE} for ".mapTypeName($ctype) . ": $cvar");
1041 }
1042
1043 sub fail_on_null($$$)
1044 {
1045         my ($self, $var, $fail) = @_;
1046         $self->pidl("if ($var == NULL) {");
1047         $self->indent;
1048         $self->pidl($fail);
1049         $self->deindent;
1050         $self->pidl("}");
1051 }
1052
1053 sub ConvertObjectToPythonLevel($$$$$$)
1054 {
1055         my ($self, $mem_ctx, $env, $e, $l, $var_name, $py_var, $fail) = @_;
1056         my $nl = GetNextLevel($e, $l);
1057
1058         if ($l->{TYPE} eq "POINTER") {
1059                 if ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE})) {
1060                         $self->ConvertObjectToPythonLevel($var_name, $env, $e, $nl, $var_name, $py_var, $fail);
1061                         return;
1062                 }
1063                 if ($l->{POINTER_TYPE} ne "ref") {
1064                         $self->pidl("if ($var_name == NULL) {");
1065                         $self->indent;
1066                         $self->pidl("$py_var = Py_None;");
1067                         $self->deindent;
1068                         $self->pidl("} else {");
1069                         $self->indent;
1070                 }
1071                 $self->ConvertObjectToPythonLevel($var_name, $env, $e, $nl, get_value_of($var_name), $py_var, $fail);
1072                 if ($l->{POINTER_TYPE} ne "ref") {
1073                         $self->deindent;
1074                         $self->pidl("}");
1075                 }
1076         } elsif ($l->{TYPE} eq "ARRAY") {
1077                 my $pl = GetPrevLevel($e, $l);
1078                 if ($pl && $pl->{TYPE} eq "POINTER") {
1079                         $var_name = get_pointer_to($var_name);
1080                 }
1081
1082                 if (is_charset_array($e, $l)) {
1083                         # FIXME: Use Unix charset setting rather than utf-8
1084                         $self->pidl("$py_var = PyUnicode_Decode($var_name, strlen($var_name), \"utf-8\", \"ignore\");");
1085                 } else {
1086                         die("No SIZE_IS for array $var_name") unless (defined($l->{SIZE_IS}));
1087                         my $length = $l->{SIZE_IS};
1088                         if (defined($l->{LENGTH_IS})) {
1089                                 $length = $l->{LENGTH_IS};
1090                         }
1091
1092                         $length = ParseExpr($length, $env, $e);
1093                         $self->pidl("$py_var = PyList_New($length);");
1094                         $self->fail_on_null($py_var, $fail);
1095                         $self->pidl("{");
1096                         $self->indent;
1097                         my $counter = "$e->{NAME}_cntr_$l->{LEVEL_INDEX}";
1098                         $self->pidl("int $counter;");
1099                         $self->pidl("for ($counter = 0; $counter < $length; $counter++) {");
1100                         $self->indent;
1101                         my $member_var = "py_$e->{NAME}_$l->{LEVEL_INDEX}";
1102                         $self->pidl("PyObject *$member_var;");
1103                         $self->ConvertObjectToPythonLevel($var_name, $env, $e, GetNextLevel($e, $l), $var_name."[$counter]", $member_var, $fail);
1104                         $self->pidl("PyList_SetItem($py_var, $counter, $member_var);");
1105                         $self->deindent;
1106                         $self->pidl("}");
1107                         $self->deindent;
1108                         $self->pidl("}");
1109                 }
1110         } elsif ($l->{TYPE} eq "SWITCH") {
1111                 $var_name = get_pointer_to($var_name);
1112                 my $switch = ParseExpr($l->{SWITCH_IS}, $env, $e);
1113                 $self->pidl("$py_var = py_import_" . GetNextLevel($e, $l)->{DATA_TYPE} . "($mem_ctx, $switch, $var_name);");
1114                 $self->fail_on_null($py_var, $fail);
1115
1116         } elsif ($l->{TYPE} eq "DATA") {
1117                 if (not Parse::Pidl::Typelist::is_scalar($l->{DATA_TYPE})) {
1118                         $var_name = get_pointer_to($var_name);
1119                 }
1120                 my $conv = $self->ConvertObjectToPythonData($mem_ctx, $l->{DATA_TYPE}, $var_name, $e->{ORIGINAL});
1121                 $self->pidl("$py_var = $conv;");
1122         } elsif ($l->{TYPE} eq "SUBCONTEXT") {
1123                 $self->ConvertObjectToPythonLevel($mem_ctx, $env, $e, GetNextLevel($e, $l), $var_name, $py_var, $fail);
1124         } else {
1125                 fatal($e->{ORIGINAL}, "Unknown level type $l->{TYPE} $var_name");
1126         }
1127 }
1128
1129 sub ConvertObjectToPython($$$$$$)
1130 {
1131         my ($self, $mem_ctx, $env, $ctype, $cvar, $py_var, $fail) = @_;
1132
1133         $self->ConvertObjectToPythonLevel($mem_ctx, $env, $ctype, $ctype->{LEVELS}[0], $cvar, $py_var, $fail);
1134 }
1135
1136 sub Parse($$$$$)
1137 {
1138     my($self,$basename,$ndr,$ndr_hdr,$hdr) = @_;
1139
1140         $self->{BASENAME} = $basename;
1141
1142     $self->pidl_hdr("
1143 /* Python wrapper functions auto-generated by pidl */
1144 #include \"includes.h\"
1145 #include <Python.h>
1146 #include \"librpc/rpc/dcerpc.h\"
1147 #include \"lib/talloc/pytalloc.h\"
1148 #include \"librpc/rpc/pyrpc.h\"
1149 #include \"$hdr\"
1150 #include \"$ndr_hdr\"
1151
1152 #ifndef Py_RETURN_NONE
1153 #define Py_RETURN_NONE return Py_INCREF(Py_None), Py_None
1154 #endif
1155
1156 ");
1157
1158         foreach my $x (@$ndr) {
1159                 ($x->{TYPE} eq "IMPORT") && $self->Import(@{$x->{PATHS}});
1160             ($x->{TYPE} eq "INTERFACE") && $self->Interface($x, $basename);
1161         }
1162
1163         $self->pidl("static PyMethodDef $basename\_methods[] = {");
1164         $self->indent;
1165         foreach (@{$self->{module_methods}}) {
1166                 my ($fn_name, $pyfn_name, $flags, $doc) = @$_;
1167                 $self->pidl("{ \"$fn_name\", (PyCFunction)$pyfn_name, $flags, $doc },");
1168         }
1169
1170         $self->pidl("{ NULL, NULL, 0, NULL }");
1171         $self->deindent;
1172         $self->pidl("};");
1173
1174         $self->pidl("");
1175
1176         $self->pidl("void init$basename(void)");
1177         $self->pidl("{");
1178         $self->indent;
1179         $self->pidl("PyObject *m;");
1180         foreach (@{$self->{module_imports}}) {
1181                 $self->pidl("PyObject *dep_$_;");
1182         }
1183         $self->pidl("");
1184
1185         foreach (@{$self->{module_imports}}) {
1186                 $self->pidl("dep_$_ = PyImport_ImportModule(\"samba.dcerpc.$_\");");
1187                 $self->pidl("if (dep_$_ == NULL)");
1188                 $self->pidl("\treturn;");
1189                 $self->pidl("");
1190         }
1191
1192         foreach (keys %{$self->{type_imports}}) {
1193                 my $basefile = $self->{type_imports}->{$_};
1194                 $self->pidl_hdr("static PyTypeObject *$_\_Type;\n");
1195                 my $pretty_name = PrettifyTypeName($_, $basefile);
1196                 $self->pidl("$_\_Type = (PyTypeObject *)PyObject_GetAttrString(dep_$basefile, \"$pretty_name\");");
1197                 $self->pidl("if ($_\_Type == NULL)");
1198                 $self->pidl("\treturn;");
1199                 $self->pidl("");
1200         }
1201
1202         foreach (@{$self->{ready_types}}) {
1203                 $self->pidl("if (PyType_Ready($_) < 0)");
1204                 $self->pidl("\treturn;");
1205         }
1206
1207         $self->pidl($_) foreach (@{$self->{readycode}});
1208
1209         foreach (@{$self->{patch_type_calls}}) {
1210                 my ($typename, $cvar) = @$_;
1211                 $self->pidl("#ifdef PY_".uc($typename)."_PATCH");
1212                 $self->pidl("PY_".uc($typename)."_PATCH($cvar);");
1213                 $self->pidl("#endif");
1214         }
1215
1216         $self->pidl("");
1217
1218         $self->pidl("m = Py_InitModule3(\"$basename\", $basename\_methods, \"$basename DCE/RPC\");");
1219         $self->pidl("if (m == NULL)");
1220         $self->pidl("\treturn;");
1221         $self->pidl("");
1222         foreach my $name (keys %{$self->{constants}}) {
1223                 my $py_obj;
1224                 my ($ctype, $cvar) = @{$self->{constants}->{$name}};
1225                 if ($cvar =~ /^[0-9]+$/ or $cvar =~ /^0x[0-9a-fA-F]+$/) {
1226                         $py_obj = "PyInt_FromLong($cvar)";
1227                 } elsif ($cvar =~ /^".*"$/) {
1228                         $py_obj = "PyString_FromString($cvar)";
1229                 } else {
1230                         $py_obj = $self->ConvertObjectToPythonData("NULL", expandAlias($ctype), $cvar, undef);
1231                 }
1232
1233                 $self->pidl("PyModule_AddObject(m, \"$name\", $py_obj);");
1234         }
1235
1236         foreach (@{$self->{module_objects}}) {
1237                 my ($object_name, $c_name) = @$_;
1238                 $self->pidl("Py_INCREF($c_name);");
1239                 $self->pidl("PyModule_AddObject(m, \"$object_name\", $c_name);");
1240         }
1241
1242         $self->pidl("#ifdef PY_MOD_".uc($basename)."_PATCH");
1243         $self->pidl("PY_MOD_".uc($basename)."_PATCH(m);");
1244         $self->pidl("#endif");
1245
1246         $self->pidl("");
1247         $self->deindent;
1248         $self->pidl("}");
1249     return ($self->{res_hdr} . $self->{res});
1250 }
1251
1252 1;