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

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