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

   1 ###################################################
   2 # Python function wrapper generator
   3 # Copyright jelmer@samba.org 2007-2008
   4 # released under the GNU GPL
   5
   6 package Parse::Pidl::Samba4::Python;
   7
   8 use Exporter;
   9 @ISA = qw(Exporter);
  10
  11 use strict;
  12 use Parse::Pidl qw(warning fatal);
  13 use Parse::Pidl::Typelist qw(hasType resolveType getType mapTypeName expandAlias);
  14 use Parse::Pidl::Util qw(has_property ParseExpr unmake_str);
  15 use Parse::Pidl::NDR qw(GetPrevLevel GetNextLevel ContainsDeferred is_charset_array);
  16 use Parse::Pidl::CUtil qw(get_value_of get_pointer_to);
  17 use Parse::Pidl::Samba4 qw(ArrayDynamicallyAllocated);
  18 use Parse::Pidl::Samba4::Header qw(GenerateFunctionInEnv GenerateFunctionOutEnv EnvSubstituteValue GenerateStructEnv);
  19
  20 use vars qw($VERSION);
  21 $VERSION = '0.01';
  22
  23 sub new($) {
  24         my ($class) = @_;
  25         my $self = { res => "", res_hdr => "", tabs => "", constants => {},
  26                      module_methods => [], module_objects => [], ready_types => [],
  27                                  patch_type_calls => [], readycode => [] };
  28         bless($self, $class);
  29 }
  30
  31 sub pidl_hdr ($$)
  32 {
  33         my $self = shift;
  34         $self->{res_hdr} .= shift;
  35 }
  36
  37 sub pidl($$)
  38 {
  39         my ($self, $d) = @_;
  40         if ($d) {
  41                 if ((!($d =~ /^#/))) {
  42                         $self->{res} .= $self->{tabs};
  43                 }
  44                 $self->{res} .= $d;
  45         }
  46         $self->{res} .= "\n";
  47 }
  48
  49 sub indent($)
  50 {
  51         my ($self) = @_;
  52         $self->{tabs} .= "\t";
  53 }
  54
  55 sub deindent($)
  56 {
  57         my ($self) = @_;
  58         $self->{tabs} = substr($self->{tabs}, 0, -1);
  59 }
  60
  61 sub Import
  62 {
  63         my $self = shift;
  64         my @imports = @_;
  65         foreach (@imports) {
  66                 $_ = unmake_str($_);
  67                 s/\.idl$//;
  68                 $self->pidl_hdr("#include \"librpc/gen_ndr/py_$_\.h\"\n");
  69         }
  70 }
  71
  72 sub Const($$)
  73 {
  74     my ($self, $const) = @_;
  75         $self->register_constant($const->{NAME}, $const->{DTYPE}, $const->{VALUE});
  76 }
  77
  78 sub register_constant($$$$)
  79 {
  80         my ($self, $name, $type, $value) = @_;
  81
  82         $self->{constants}->{$name} = [$type, $value];
  83 }
  84
  85 sub EnumAndBitmapConsts($$$)
  86 {
  87         my ($self, $name, $d) = @_;
  88
  89         return unless (defined($d->{ELEMENTS}));
  90
  91         foreach my $e (@{$d->{ELEMENTS}}) {
  92                 $e =~ /^([A-Za-z0-9_]+)/;
  93                 my $cname = $1;
  94
  95                 $self->register_constant($cname, $d, $cname);
  96         }
  97 }
  98
  99 sub FromUnionToPythonFunction($$$$)
 100 {
 101         my ($self, $mem_ctx, $type, $switch, $name) = @_;
 102
 103         $self->pidl("PyObject *ret;");
 104         $self->pidl("");
 105
 106         $self->pidl("switch ($switch) {");
 107         $self->indent;
 108
 109         foreach my $e (@{$type->{ELEMENTS}}) {
 110                 $self->pidl("$e->{CASE}:");
 111
 112                 $self->indent;
 113
 114                 if ($e->{NAME}) {
 115                         $self->ConvertObjectToPython($mem_ctx, {}, $e, "$name->$e->{NAME}", "ret", "return NULL;");
 116                 } else {
 117                         $self->pidl("ret = Py_None;");
 118                 }
 119
 120                 $self->pidl("return ret;");
 121                 $self->pidl("");
 122
 123                 $self->deindent;
 124         }
 125
 126         $self->deindent;
 127         $self->pidl("}");
 128
 129         $self->pidl("PyErr_SetString(PyExc_TypeError, \"unknown union level\");");
 130         $self->pidl("return NULL;");
 131 }
 132
 133 sub FromPythonToUnionFunction($$$$$)
 134 {
 135         my ($self, $type, $typename, $switch, $mem_ctx, $name) = @_;
 136
 137         my $has_default = 0;
 138
 139         $self->pidl("$typename *ret = talloc_zero($mem_ctx, $typename);");
 140
 141         $self->pidl("switch ($switch) {");
 142         $self->indent;
 143
 144         foreach my $e (@{$type->{ELEMENTS}}) {
 145                 $self->pidl("$e->{CASE}:");
 146                 if ($e->{CASE} eq "default") { $has_default = 1; }
 147                 $self->indent;
 148                 if ($e->{NAME}) {
 149                         $self->ConvertObjectFromPython({}, $mem_ctx, $e, $name, "ret->$e->{NAME}", "talloc_free(ret); return NULL;");
 150                 }
 151                 $self->pidl("break;");
 152                 $self->deindent;
 153                 $self->pidl("");
 154         }
 155
 156         if (!$has_default) {
 157                 $self->pidl("default:");
 158                 $self->indent;
 159                 $self->pidl("PyErr_SetString(PyExc_TypeError, \"invalid union level value\");");
 160                 $self->pidl("talloc_free(ret);");
 161                 $self->pidl("ret = NULL;");
 162                 $self->deindent;
 163         }
 164
 165         $self->deindent;
 166         $self->pidl("}");
 167         $self->pidl("");
 168         $self->pidl("return ret;");
 169 }
 170
 171 sub PythonStruct($$$$$$)
 172 {
 173         my ($self, $modulename, $prettyname, $name, $cname, $d) = @_;
 174
 175         my $env = GenerateStructEnv($d, "object");
 176
 177         $self->pidl("");
 178
 179         my $getsetters = "NULL";
 180
 181         if ($#{$d->{ELEMENTS}} > -1) {
 182                 foreach my $e (@{$d->{ELEMENTS}}) {
 183                         my $varname = "object->$e->{NAME}";
 184                         $self->pidl("static PyObject *py_$name\_get_$e->{NAME}(PyObject *obj, void *closure)");
 185                         $self->pidl("{");
 186                         $self->indent;
 187                         $self->pidl("$cname *object = py_talloc_get_ptr(obj);");
 188                         $self->pidl("PyObject *py_$e->{NAME};");
 189                         $self->ConvertObjectToPython("py_talloc_get_mem_ctx(obj)", $env, $e, $varname, "py_$e->{NAME}", "return NULL;");
 190                         $self->pidl("return py_$e->{NAME};");
 191                         $self->deindent;
 192                         $self->pidl("}");
 193                         $self->pidl("");
 194
 195                         $self->pidl("static int py_$name\_set_$e->{NAME}(PyObject *py_obj, PyObject *value, void *closure)");
 196                         $self->pidl("{");
 197                         $self->indent;
 198                         $self->pidl("$cname *object = py_talloc_get_ptr(py_obj);");
 199                         my $mem_ctx = "py_talloc_get_mem_ctx(py_obj)";
 200                         my $l = $e->{LEVELS}[0];
 201                         my $nl = GetNextLevel($e, $l);
 202                         if ($l->{TYPE} eq "POINTER" and
 203                                 not ($nl->{TYPE} eq "ARRAY" and ($nl->{IS_FIXED} or is_charset_array($e, $nl))) and
 204                                 not ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE}))) {
 205                                 $self->pidl("talloc_free($varname);");
 206                         }
 207                         $self->ConvertObjectFromPython($env, $mem_ctx, $e, "value", $varname, "return -1;");
 208                         $self->pidl("return 0;");
 209                         $self->deindent;
 210                         $self->pidl("}");
 211                         $self->pidl("");
 212                 }
 213
 214                 $getsetters = "py_$name\_getsetters";
 215                 $self->pidl("static PyGetSetDef ".$getsetters."[] = {");
 216                 $self->indent;
 217                 foreach my $e (@{$d->{ELEMENTS}}) {
 218                         $self->pidl("{ discard_const_p(char, \"$e->{NAME}\"), py_$name\_get_$e->{NAME}, py_$name\_set_$e->{NAME} },");
 219                 }
 220                 $self->pidl("{ NULL }");
 221                 $self->deindent;
 222                 $self->pidl("};");
 223                 $self->pidl("");
 224         }
 225
 226         $self->pidl("static PyObject *py_$name\_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)");
 227         $self->pidl("{");
 228         $self->indent;
 229         $self->pidl("return py_talloc_new($cname, type);");
 230         $self->deindent;
 231         $self->pidl("}");
 232         $self->pidl("");
 233
 234         my $py_methods = "NULL";
 235
 236         # If the struct is not public there ndr_pull/ndr_push functions will
 237         # be static so not callable from here
 238         if (has_property($d, "public")) {
 239                 $self->pidl("static PyObject *py_$name\_ndr_pack(PyObject *py_obj)");
 240                 $self->pidl("{");
 241                 $self->indent;
 242                 $self->pidl("$cname *object = py_talloc_get_ptr(py_obj);");
 243                 $self->pidl("DATA_BLOB blob;");
 244                 $self->pidl("enum ndr_err_code err;");
 245                 $self->pidl("err = ndr_push_struct_blob(&blob, py_talloc_get_mem_ctx(py_obj), NULL, object, (ndr_push_flags_fn_t)ndr_push_$name);");
 246                 $self->pidl("if (err != NDR_ERR_SUCCESS) {");
 247                 $self->indent;
 248                 $self->pidl("PyErr_SetNdrError(err);");
 249                 $self->pidl("return NULL;");
 250                 $self->deindent;
 251                 $self->pidl("}");
 252                 $self->pidl("");
 253                 $self->pidl("return PyString_FromStringAndSize((char *)blob.data, blob.length);");
 254                 $self->deindent;
 255                 $self->pidl("}");
 256                 $self->pidl("");
 257
 258                 $self->pidl("static PyObject *py_$name\_ndr_unpack(PyObject *py_obj, PyObject *args)");
 259                 $self->pidl("{");
 260                 $self->indent;
 261                 $self->pidl("$cname *object = py_talloc_get_ptr(py_obj);");
 262                 $self->pidl("DATA_BLOB blob;");
 263                 $self->pidl("enum ndr_err_code err;");
 264                 $self->pidl("if (!PyArg_ParseTuple(args, \"s#:__ndr_unpack__\", &blob.data, &blob.length))");
 265                 $self->pidl("\treturn NULL;");
 266                 $self->pidl("");
 267                 $self->pidl("err = ndr_pull_struct_blob_all(&blob, py_talloc_get_mem_ctx(py_obj), NULL, object, (ndr_pull_flags_fn_t)ndr_pull_$name);");
 268                 $self->pidl("if (err != NDR_ERR_SUCCESS) {");
 269                 $self->indent;
 270                 $self->pidl("PyErr_SetNdrError(err);");
 271                 $self->pidl("return NULL;");
 272                 $self->deindent;
 273                 $self->pidl("}");
 274                 $self->pidl("");
 275                 $self->pidl("return Py_None;");
 276                 $self->deindent;
 277                 $self->pidl("}");
 278                 $self->pidl("");
 279                 $py_methods = "py_$name\_methods";
 280                 $self->pidl("static PyMethodDef $py_methods\[] = {");
 281                 $self->indent;
 282                 $self->pidl("{ \"__ndr_pack__\", (PyCFunction)py_$name\_ndr_pack, METH_NOARGS, \"S.pack() -> blob\\nNDR pack\" },");
 283                 $self->pidl("{ \"__ndr_unpack__\", (PyCFunction)py_$name\_ndr_unpack, METH_VARARGS, \"S.unpack(blob) -> None\\nNDR unpack\" },");
 284                 $self->pidl("{ NULL, NULL, 0, NULL }");
 285                 $self->deindent;
 286                 $self->pidl("};");
 287                 $self->pidl("");
 288         }
 289
 290         $self->pidl_hdr("PyAPI_DATA(PyTypeObject) $name\_Type;\n");
 291         $self->pidl_hdr("#define $name\_Check(op) PyObject_TypeCheck(op, &$name\_Type)\n");
 292         $self->pidl_hdr("#define $name\_CheckExact(op) ((op)->ob_type == &$name\_Type)\n");
 293         $self->pidl_hdr("\n");
 294         $self->pidl("");
 295         my $docstring = $self->DocString($d, $name);
 296         my $typeobject = "$name\_Type";
 297         $self->pidl("PyTypeObject $typeobject = {");
 298         $self->indent;
 299         $self->pidl("PyObject_HEAD_INIT(NULL) 0,");
 300         $self->pidl(".tp_name = \"$modulename.$prettyname\",");
 301         $self->pidl(".tp_basicsize = sizeof(py_talloc_Object),");
 302         $self->pidl(".tp_dealloc = py_talloc_dealloc,");
 303         $self->pidl(".tp_getset = $getsetters,");
 304         $self->pidl(".tp_repr = py_talloc_default_repr,");
 305         if ($docstring) {
 306                 $self->pidl(".tp_doc = $docstring,");
 307         }
 308         $self->pidl(".tp_methods = $py_methods,");
 309         $self->pidl(".tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,");
 310         $self->pidl(".tp_new = py_$name\_new,");
 311         $self->deindent;
 312         $self->pidl("};");
 313
 314         $self->pidl("");
 315
 316         return "&$typeobject";
 317 }
 318
 319 sub get_metadata_var($)
 320 {
 321         my ($e) = @_;
 322         sub get_var($) { my $x = shift; $x =~ s/\*//g; return $x; }
 323
 324          if (has_property($e, "length_is")) {
 325                 return get_var($e->{PROPERTIES}->{length_is});
 326          } elsif (has_property($e, "size_is")) {
 327                 return get_var($e->{PROPERTIES}->{size_is});
 328          }
 329
 330          return undef;
 331 }
 332
 333 sub find_metadata_args($)
 334 {
 335         my ($fn) = @_;
 336         my $metadata_args = { in => {}, out => {} };
 337
 338         # Determine arguments that are metadata for other arguments (size_is/length_is)
 339         foreach my $e (@{$fn->{ELEMENTS}}) {
 340                 foreach my $dir (@{$e->{DIRECTION}}) {
 341                          my $main = get_metadata_var($e);
 342                          if ($main) {
 343                                  $metadata_args->{$dir}->{$main} = $e->{NAME};
 344                          }
 345                  }
 346         }
 347
 348         return $metadata_args;
 349 }
 350
 351 sub PythonFunctionUnpackOut($$$)
 352 {
 353         my ($self, $fn, $fnname) = @_;
 354
 355         my $outfnname = "unpack_$fnname\_args_out";
 356         my $signature = "";
 357
 358         my $metadata_args = find_metadata_args($fn);
 359
 360         my $env = GenerateFunctionOutEnv($fn, "r->");
 361         my $result_size = 0;
 362
 363         $self->pidl("static PyObject *$outfnname(struct $fn->{NAME} *r)");
 364         $self->pidl("{");
 365         $self->indent;
 366         $self->pidl("PyObject *result = Py_None;");
 367         foreach my $e (@{$fn->{ELEMENTS}}) {
 368                 next unless (grep(/out/,@{$e->{DIRECTION}}));
 369                 next if (($metadata_args->{in}->{$e->{NAME}} and grep(/in/, @{$e->{DIRECTION}})) or
 370                          ($metadata_args->{out}->{$e->{NAME}}) and grep(/out/, @{$e->{DIRECTION}}));
 371                 $self->pidl("PyObject *py_$e->{NAME};");
 372                 $result_size++;
 373         }
 374
 375         if ($fn->{RETURN_TYPE}) {
 376                 $result_size++ unless ($fn->{RETURN_TYPE} eq "WERROR" or $fn->{RETURN_TYPE} eq "NTSTATUS");
 377         }
 378
 379         my $i = 0;
 380
 381         if ($result_size > 1) {
 382                 $self->pidl("result = PyTuple_New($result_size);");
 383                 $signature .= "(";
 384         } elsif ($result_size == 0) {
 385                 $signature .= "None";
 386         }
 387
 388         foreach my $e (@{$fn->{ELEMENTS}}) {
 389                 next if ($metadata_args->{out}->{$e->{NAME}});
 390                 my $py_name = "py_$e->{NAME}";
 391                 if (grep(/out/,@{$e->{DIRECTION}})) {
 392                         $self->ConvertObjectToPython("r", $env, $e, "r->out.$e->{NAME}", $py_name, "return NULL;");
 393                         if ($result_size > 1) {
 394                                 $self->pidl("PyTuple_SetItem(result, $i, $py_name);");
 395                                 $i++;
 396                                 $signature .= "$e->{NAME}, ";
 397                         } else {
 398                                 $self->pidl("result = $py_name;");
 399                                 $signature .= $e->{NAME};
 400                         }
 401                 }
 402         }
 403
 404         if (defined($fn->{RETURN_TYPE}) and $fn->{RETURN_TYPE} eq "NTSTATUS") {
 405                 $self->handle_ntstatus("r->out.result", "NULL", undef);
 406         } elsif (defined($fn->{RETURN_TYPE}) and $fn->{RETURN_TYPE} eq "WERROR") {
 407                 $self->handle_werror("r->out.result", "NULL", undef);
 408         } elsif (defined($fn->{RETURN_TYPE})) {
 409                 my $conv = $self->ConvertObjectToPythonData("r", $fn->{RETURN_TYPE}, "r->out.result");
 410                 if ($result_size > 1) {
 411                         $self->pidl("PyTuple_SetItem(result, $i, $conv);");
 412                 } else {
 413                         $self->pidl("result = $conv;");
 414                 }
 415                 $signature .= "result";
 416         }
 417
 418         if (substr($signature, -2) eq ", ") {
 419                 $signature = substr($signature, 0, -2);
 420         }
 421         if ($result_size > 1) {
 422                 $signature .= ")";
 423         }
 424
 425         $self->pidl("return result;");
 426         $self->deindent;
 427         $self->pidl("}");
 428         $self->pidl("");
 429
 430         return ($outfnname, $signature);
 431 }
 432
 433 sub PythonFunctionPackIn($$$)
 434 {
 435         my ($self, $fn, $fnname) = @_;
 436         my $metadata_args = find_metadata_args($fn);
 437
 438         my $infnname = "pack_$fnname\_args_in";
 439
 440         $self->pidl("static bool $infnname(PyObject *args, PyObject *kwargs, struct $fn->{NAME} *r)");
 441         $self->pidl("{");
 442         $self->indent;
 443         my $args_format = "";
 444         my $args_string = "";
 445         my $args_names = "";
 446         my $signature = "";
 447
 448         foreach my $e (@{$fn->{ELEMENTS}}) {
 449                 next unless (grep(/in/,@{$e->{DIRECTION}}));
 450                 next if (($metadata_args->{in}->{$e->{NAME}} and grep(/in/, @{$e->{DIRECTION}})) or
 451                                  ($metadata_args->{out}->{$e->{NAME}}) and grep(/out/, @{$e->{DIRECTION}}));
 452                 $self->pidl("PyObject *py_$e->{NAME};");
 453                 $args_format .= "O";
 454                 $args_string .= ", &py_$e->{NAME}";
 455                 $args_names .= "\"$e->{NAME}\", ";
 456                 $signature .= "$e->{NAME}, ";
 457         }
 458         if (substr($signature, -2) eq ", ") {
 459                 $signature = substr($signature, 0, -2);
 460         }
 461         $self->pidl("const char *kwnames[] = {");
 462         $self->indent;
 463         $self->pidl($args_names . "NULL");
 464         $self->deindent;
 465         $self->pidl("};");
 466
 467         $self->pidl("");
 468         $self->pidl("if (!PyArg_ParseTupleAndKeywords(args, kwargs, \"$args_format:$fn->{NAME}\", discard_const_p(char *, kwnames)$args_string)) {");
 469         $self->indent;
 470         $self->pidl("return false;");
 471         $self->deindent;
 472         $self->pidl("}");
 473         $self->pidl("");
 474
 475         my $env = GenerateFunctionInEnv($fn, "r->");
 476
 477         my $fail = "return false;";
 478         foreach my $e (@{$fn->{ELEMENTS}}) {
 479                 next unless (grep(/in/,@{$e->{DIRECTION}}));
 480                 if ($metadata_args->{in}->{$e->{NAME}}) {
 481                         my $py_var = "py_".$metadata_args->{in}->{$e->{NAME}};
 482                         $self->pidl("PY_CHECK_TYPE(PyList, $py_var, $fail);");
 483                         my $val = "PyList_Size($py_var)";
 484                         if ($e->{LEVELS}[0]->{TYPE} eq "POINTER") {
 485                                 $self->pidl("r->in.$e->{NAME} = talloc_ptrtype(r, r->in.$e->{NAME});");
 486                                 $self->pidl("*r->in.$e->{NAME} = $val;");
 487                         } else {
 488                                 $self->pidl("r->in.$e->{NAME} = $val;");
 489                         }
 490                 } else {
 491                         $self->ConvertObjectFromPython($env, "r", $e, "py_$e->{NAME}", "r->in.$e->{NAME}", $fail);
 492                 }
 493         }
 494         $self->pidl("return true;");
 495         $self->deindent;
 496         $self->pidl("}");
 497         $self->pidl("");
 498         return ($infnname, $signature);
 499 }
 500
 501 sub PythonFunction($$$)
 502 {
 503         my ($self, $fn, $iface, $prettyname) = @_;
 504
 505         my $fnname = "py_$fn->{NAME}";
 506         my $docstring = $self->DocString($fn, $fn->{NAME});
 507
 508         my ($insignature, $outsignature);
 509         my ($infn, $outfn);
 510
 511         if (has_property($fn, "todo")) {
 512                 unless ($docstring) { $docstring = "NULL"; }
 513                 $infn = "NULL";
 514                 $outfn = "NULL";
 515         } else {
 516                 ($infn, $insignature) = $self->PythonFunctionPackIn($fn, $fnname);
 517                 ($outfn, $outsignature) = $self->PythonFunctionUnpackOut($fn, $fnname);
 518                 my $signature = "S.$prettyname($insignature) -> $outsignature";
 519                 if ($docstring) {
 520                         $docstring = "\"$signature\\n\\n\"$docstring";
 521                 } else {
 522                         $docstring = "\"$signature\"";
 523                 }
 524         }
 525
 526         return ($infn, $outfn, $docstring);
 527 }
 528
 529 sub handle_werror($$$$)
 530 {
 531         my ($self, $var, $retval, $mem_ctx) = @_;
 532
 533         $self->pidl("if (!W_ERROR_IS_OK($var)) {");
 534         $self->indent;
 535         $self->pidl("PyErr_SetWERROR($var);");
 536         $self->pidl("talloc_free($mem_ctx);") if ($mem_ctx);
 537         $self->pidl("return $retval;");
 538         $self->deindent;
 539         $self->pidl("}");
 540         $self->pidl("");
 541 }
 542
 543 sub handle_ntstatus($$$$)
 544 {
 545         my ($self, $var, $retval, $mem_ctx) = @_;
 546
 547         $self->pidl("if (NT_STATUS_IS_ERR($var)) {");
 548         $self->indent;
 549         $self->pidl("PyErr_SetNTSTATUS($var);");
 550         $self->pidl("talloc_free($mem_ctx);") if ($mem_ctx);
 551         $self->pidl("return $retval;");
 552         $self->deindent;
 553         $self->pidl("}");
 554         $self->pidl("");
 555 }
 556
 557 sub PythonType($$$$)
 558 {
 559         my ($self, $modulename, $d, $interface, $basename) = @_;
 560
 561         my $actual_ctype = $d;
 562         if ($actual_ctype->{TYPE} eq "TYPEDEF") {
 563                 $actual_ctype = $actual_ctype->{DATA};
 564         }
 565
 566         if ($actual_ctype->{TYPE} eq "STRUCT") {
 567                 my $typeobject;
 568                 my $fn_name = $d->{NAME};
 569
 570                 $fn_name =~ s/^$interface->{NAME}_//;
 571                 $fn_name =~ s/^$basename\_//;
 572
 573
 574                 if ($d->{TYPE} eq "STRUCT") {
 575                         $typeobject = $self->PythonStruct($modulename, $fn_name, $d->{NAME}, mapTypeName($d), $d);
 576                 } else {
 577                         $typeobject = $self->PythonStruct($modulename, $fn_name, $d->{NAME}, mapTypeName($d), $d->{DATA});
 578                 }
 579
 580                 $self->register_module_typeobject($fn_name, $typeobject);
 581         }
 582
 583         if ($d->{TYPE} eq "ENUM" or $d->{TYPE} eq "BITMAP") {
 584                 $self->EnumAndBitmapConsts($d->{NAME}, $d);
 585         }
 586
 587         if ($d->{TYPE} eq "TYPEDEF" and ($d->{DATA}->{TYPE} eq "ENUM" or $d->{DATA}->{TYPE} eq "BITMAP")) {
 588                 $self->EnumAndBitmapConsts($d->{NAME}, $d->{DATA});
 589         }
 590
 591         if ($actual_ctype->{TYPE} eq "UNION" and defined($actual_ctype->{ELEMENTS})) {
 592                 $self->pidl("PyObject *py_import_$d->{NAME}(TALLOC_CTX *mem_ctx, int level, " .mapTypeName($d) . " *in)");
 593                 $self->pidl("{");
 594                 $self->indent;
 595                 $self->FromUnionToPythonFunction("mem_ctx", $actual_ctype, "level", "in") if ($actual_ctype->{TYPE} eq "UNION");
 596                 $self->deindent;
 597                 $self->pidl("}");
 598                 $self->pidl("");
 599
 600                 $self->pidl(mapTypeName($d) . " *py_export_$d->{NAME}(TALLOC_CTX *mem_ctx, int level, PyObject *in)");
 601                 $self->pidl("{");
 602                 $self->indent;
 603                 $self->FromPythonToUnionFunction($actual_ctype, mapTypeName($d), "level", "mem_ctx", "in") if ($actual_ctype->{TYPE} eq "UNION");
 604                 $self->deindent;
 605                 $self->pidl("}");
 606                 $self->pidl("");
 607         }
 608 }
 609
 610 sub DocString($$$)
 611 {
 612         my ($self, $d, $name) = @_;
 613         if (has_property($d, "helpstring")) {
 614                 my $docstring = uc("py_doc_$name");
 615                 $self->pidl("#define $docstring ".has_property($d, "helpstring"));
 616                 return $docstring;
 617         }
 618
 619         return undef;
 620 }
 621
 622 sub Interface($$$)
 623 {
 624         my($self,$interface,$basename) = @_;
 625
 626         $self->pidl_hdr("#ifndef _HEADER_PYTHON_$interface->{NAME}\n");
 627         $self->pidl_hdr("#define _HEADER_PYTHON_$interface->{NAME}\n\n");
 628
 629         $self->pidl_hdr("\n");
 630
 631         if (has_property($interface, "pyhelper")) {
 632                 $self->pidl("#include \"".unmake_str($interface->{PROPERTIES}->{pyhelper})."\"\n");
 633         }
 634
 635         $self->Const($_) foreach (@{$interface->{CONSTS}});
 636
 637         foreach my $d (@{$interface->{TYPES}}) {
 638                 next if has_property($d, "nopython");
 639
 640                 $self->PythonType($basename, $d, $interface, $basename);
 641         }
 642
 643         if (defined $interface->{PROPERTIES}->{uuid}) {
 644                 $self->pidl_hdr("PyAPI_DATA(PyTypeObject) $interface->{NAME}_InterfaceType;\n");
 645                 $self->pidl("");
 646
 647                 my @fns = ();
 648
 649                 foreach my $d (@{$interface->{FUNCTIONS}}) {
 650                         next if not defined($d->{OPNUM});
 651                         next if has_property($d, "nopython");
 652
 653                         my $prettyname = $d->{NAME};
 654
 655                         $prettyname =~ s/^$interface->{NAME}_//;
 656                         $prettyname =~ s/^$basename\_//;
 657
 658                         my ($infn, $outfn, $fndocstring) = $self->PythonFunction($d, $interface->{NAME}, $prettyname);
 659
 660                         push (@fns, [$infn, $outfn, "dcerpc_$d->{NAME}", $prettyname, $fndocstring, $d->{OPNUM}]);
 661                 }
 662
 663                 $self->pidl("const struct PyNdrRpcMethodDef py_ndr_$interface->{NAME}\_methods[] = {");
 664                 $self->pidl_hdr("extern const struct PyNdrRpcMethodDef py_ndr_$interface->{NAME}\_methods[];");
 665                 $self->indent;
 666                 foreach my $d (@fns) {
 667                         my ($infn, $outfn, $callfn, $prettyname, $docstring, $opnum) = @$d;
 668                         $self->pidl("{ \"$prettyname\", $docstring, (dcerpc_call_fn)$callfn, (py_data_pack_fn)$infn, (py_data_unpack_fn)$outfn, $opnum, &ndr_table_$interface->{NAME} },");
 669                 }
 670                 $self->pidl("{ NULL }");
 671                 $self->deindent;
 672                 $self->pidl("};");
 673                 $self->pidl("");
 674
 675                 $self->pidl("static PyObject *interface_$interface->{NAME}_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)");
 676                 $self->pidl("{");
 677                 $self->indent;
 678                 $self->pidl("dcerpc_InterfaceObject *ret;");
 679                 $self->pidl("const char *binding_string;");
 680                 $self->pidl("struct cli_credentials *credentials;");
 681                 $self->pidl("struct loadparm_context *lp_ctx = NULL;");
 682                 $self->pidl("PyObject *py_lp_ctx = Py_None, *py_credentials = Py_None, *py_basis = Py_None;");
 683                 $self->pidl("TALLOC_CTX *mem_ctx = NULL;");
 684                 $self->pidl("struct event_context *event_ctx;");
 685                 $self->pidl("NTSTATUS status;");
 686                 $self->pidl("");
 687                 $self->pidl("const char *kwnames[] = {");
 688                 $self->indent;
 689                 $self->pidl("\"binding\", \"lp_ctx\", \"credentials\", \"basis_connection\", NULL");
 690                 $self->deindent;
 691                 $self->pidl("};");
 692                 $self->pidl("extern struct loadparm_context *lp_from_py_object(PyObject *py_obj);");
 693                 $self->pidl("extern struct cli_credentials *cli_credentials_from_py_object(PyObject *py_obj);");
 694                 $self->pidl("");
 695                 $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)) {");
 696                 $self->indent;
 697                 $self->pidl("return NULL;");
 698                 $self->deindent;
 699                 $self->pidl("}");
 700                 $self->pidl("");
 701                 $self->pidl("lp_ctx = lp_from_py_object(py_lp_ctx);");
 702                 $self->pidl("if (lp_ctx == NULL) {");
 703                 $self->indent;
 704                 $self->pidl("PyErr_SetString(PyExc_TypeError, \"Expected loadparm context\");");
 705                 $self->pidl("return NULL;");
 706                 $self->deindent;
 707                 $self->pidl("}");
 708                 $self->pidl("");
 709
 710                 $self->pidl("status = dcerpc_init(lp_ctx);");
 711                 $self->pidl("if (!NT_STATUS_IS_OK(status)) {");
 712                 $self->indent;
 713                 $self->pidl("PyErr_SetNTSTATUS(status);");
 714                 $self->pidl("return NULL;");
 715                 $self->deindent;
 716                 $self->pidl("}");
 717
 718                 $self->pidl("credentials = cli_credentials_from_py_object(py_credentials);");
 719                 $self->pidl("if (credentials == NULL) {");
 720                 $self->indent;
 721                 $self->pidl("PyErr_SetString(PyExc_TypeError, \"Expected credentials\");");
 722                 $self->pidl("return NULL;");
 723                 $self->deindent;
 724                 $self->pidl("}");
 725
 726                 $self->pidl("ret = PyObject_New(dcerpc_InterfaceObject, type);");
 727                 $self->pidl("");
 728                 $self->pidl("event_ctx = event_context_init(mem_ctx);");
 729                 $self->pidl("");
 730
 731                 $self->pidl("if (py_basis != Py_None) {");
 732                 $self->indent;
 733                 $self->pidl("struct dcerpc_pipe *base_pipe;");
 734                 $self->pidl("");
 735                 $self->pidl("if (!PyObject_TypeCheck(py_basis, &dcerpc_InterfaceType)) {");
 736                 $self->indent;
 737                 $self->pidl("PyErr_SetString(PyExc_ValueError, \"basis_connection must be a DCE/RPC connection\");");
 738                 $self->pidl("talloc_free(mem_ctx);");
 739                 $self->pidl("return NULL;");
 740                 $self->deindent;
 741                 $self->pidl("}");
 742                 $self->pidl("");
 743                 $self->pidl("base_pipe = ((dcerpc_InterfaceObject *)py_basis)->pipe;");
 744                 $self->pidl("");
 745                 $self->pidl("status = dcerpc_secondary_context(base_pipe, &ret->pipe, &ndr_table_$interface->{NAME});");
 746                 $self->deindent;
 747                 $self->pidl("} else {");
 748                 $self->indent;
 749                 $self->pidl("status = dcerpc_pipe_connect(NULL, &ret->pipe, binding_string, ");
 750                 $self->pidl("             &ndr_table_$interface->{NAME}, credentials, event_ctx, lp_ctx);");
 751                 $self->deindent;
 752                 $self->pidl("}");
 753                 $self->handle_ntstatus("status", "NULL", "mem_ctx");
 754
 755                 $self->pidl("ret->pipe->conn->flags |= DCERPC_NDR_REF_ALLOC;");
 756
 757                 $self->pidl("return (PyObject *)ret;");
 758                 $self->deindent;
 759                 $self->pidl("}");
 760
 761                 $self->pidl("");
 762
 763                 my $signature =
 764 "\"$interface->{NAME}(binding, lp_ctx=None, credentials=None) -> connection\\n\"
 765 \"\\n\"
 766 \"binding should be a DCE/RPC binding string (for example: ncacn_ip_tcp:127.0.0.1)\\n\"
 767 \"lp_ctx should be a path to a smb.conf file or a param.LoadParm object\\n\"
 768 \"credentials should be a credentials.Credentials object.\\n\\n\"";
 769
 770                 my $docstring = $self->DocString($interface, $interface->{NAME});
 771
 772                 if ($docstring) {
 773                         $docstring = "$signature$docstring";
 774                 } else {
 775                         $docstring = $signature;
 776                 }
 777
 778                 $self->pidl("PyTypeObject $interface->{NAME}_InterfaceType = {");
 779                 $self->indent;
 780                 $self->pidl("PyObject_HEAD_INIT(NULL) 0,");
 781                 $self->pidl(".tp_name = \"$basename.$interface->{NAME}\",");
 782                 $self->pidl(".tp_basicsize = sizeof(dcerpc_InterfaceObject),");
 783                 $self->pidl(".tp_base = &dcerpc_InterfaceType,");
 784                 $self->pidl(".tp_doc = $docstring,");
 785                 $self->pidl(".tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,");
 786                 $self->pidl(".tp_new = interface_$interface->{NAME}_new,");
 787                 $self->deindent;
 788                 $self->pidl("};");
 789
 790                 $self->pidl("");
 791
 792                 $self->register_module_typeobject($interface->{NAME}, "&$interface->{NAME}_InterfaceType");
 793                 $self->register_module_readycode(["if (!PyInterface_AddNdrRpcMethods(&$interface->{NAME}_InterfaceType, py_ndr_$interface->{NAME}\_methods))", "\treturn;", ""]);
 794         }
 795
 796         $self->pidl_hdr("\n");
 797         $self->pidl_hdr("#endif /* _HEADER_NDR_$interface->{NAME} */\n");
 798 }
 799
 800 sub register_module_method($$$$$)
 801 {
 802         my ($self, $fn_name, $pyfn_name, $flags, $doc) = @_;
 803
 804         push (@{$self->{module_methods}}, [$fn_name, $pyfn_name, $flags, $doc])
 805 }
 806
 807 sub register_module_typeobject($$$)
 808 {
 809         my ($self, $name, $py_name) = @_;
 810
 811         $self->register_module_object($name, "(PyObject *)$py_name");
 812
 813         $self->check_ready_type($py_name);
 814
 815         $self->register_patch_type_call($name, $py_name);
 816 }
 817
 818 sub check_ready_type($$)
 819 {
 820         my ($self, $py_name) = @_;
 821         push (@{$self->{ready_types}}, $py_name) unless (grep(/^$py_name$/,@{$self->{ready_types}}));
 822 }
 823
 824 sub register_patch_type_call($$$)
 825 {
 826         my ($self, $typename, $cvar) = @_;
 827
 828         push(@{$self->{patch_type_calls}}, [$typename, $cvar]);
 829
 830 }
 831
 832 sub register_module_readycode($$)
 833 {
 834         my ($self, $code) = @_;
 835
 836         push (@{$self->{readycode}}, @$code);
 837 }
 838
 839 sub register_module_object($$$)
 840 {
 841         my ($self, $name, $py_name) = @_;
 842
 843         push (@{$self->{module_objects}}, [$name, $py_name])
 844 }
 845
 846 sub assign($$$)
 847 {
 848         my ($self, $dest, $src) = @_;
 849         if ($dest =~ /^\&/) {
 850                 $self->pidl("memcpy($dest, $src, sizeof(" . get_value_of($dest) . "));");
 851         } else {
 852                 $self->pidl("$dest = $src;");
 853         }
 854 }
 855
 856 sub ConvertObjectFromPythonData($$$$$$)
 857 {
 858         my ($self, $mem_ctx, $cvar, $ctype, $target, $fail) = @_;
 859
 860         die("undef type for $cvar") unless(defined($ctype));
 861
 862         $ctype = resolveType($ctype);
 863
 864         my $actual_ctype = $ctype;
 865         if ($ctype->{TYPE} eq "TYPEDEF") {
 866                 $actual_ctype = $ctype->{DATA};
 867         }
 868
 869         if ($actual_ctype->{TYPE} eq "ENUM" or $actual_ctype->{TYPE} eq "BITMAP" or
 870                 $actual_ctype->{TYPE} eq "SCALAR" and (
 871                 expandAlias($actual_ctype->{NAME}) =~ /^(u?int[0-9]*|hyper|NTTIME|time_t|NTTIME_hyper|NTTIME_1sec|dlong|udlong|udlongr)$/)) {
 872                 $self->pidl("PY_CHECK_TYPE(PyInt, $cvar, $fail);");
 873                 $self->pidl("$target = PyInt_AsLong($cvar);");
 874                 return;
 875         }
 876
 877         if ($actual_ctype->{TYPE} eq "STRUCT" or $actual_ctype->{TYPE} eq "INTERFACE") {
 878                 $self->pidl("PY_CHECK_TYPE($ctype->{NAME}, $cvar, $fail);");
 879                 $self->assign($target, "py_talloc_get_ptr($cvar)");
 880                 return;
 881         }
 882
 883         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "DATA_BLOB") {
 884                 $self->pidl("$target = data_blob_talloc($mem_ctx, PyString_AsString($cvar), PyString_Size($cvar));");
 885                 return;
 886         }
 887
 888         if ($actual_ctype->{TYPE} eq "SCALAR" and
 889                 ($actual_ctype->{NAME} eq "string" or $actual_ctype->{NAME} eq "nbt_string" or $actual_ctype->{NAME} eq "nbt_name" or $actual_ctype->{NAME} eq "wrepl_nbt_name")) {
 890                 $self->pidl("$target = talloc_strdup($mem_ctx, PyString_AsString($cvar));");
 891                 return;
 892         }
 893
 894         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "ipv4address") {
 895                 $self->pidl("$target = PyString_AsString($cvar);");
 896                 return;
 897                 }
 898
 899
 900         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "NTSTATUS") {
 901                 $self->pidl("$target = NT_STATUS(PyInt_AsLong($cvar));");
 902                 return;
 903         }
 904
 905         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "WERROR") {
 906                 $self->pidl("$target = W_ERROR(PyInt_AsLong($cvar));");
 907                 return;
 908         }
 909
 910         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "string_array") {
 911                 $self->pidl("$target = PyCObject_AsVoidPtr($cvar);");
 912                 return;
 913         }
 914
 915         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "pointer") {
 916                 $self->assign($target, "PyCObject_AsVoidPtr($cvar)");
 917                 return;
 918         }
 919
 920         fatal($ctype, "unknown type $actual_ctype->{TYPE} for ".mapTypeName($ctype) . ": $cvar");
 921
 922 }
 923
 924 sub ConvertObjectFromPythonLevel($$$$$$$$)
 925 {
 926         my ($self, $env, $mem_ctx, $py_var, $e, $l, $var_name, $fail) = @_;
 927         my $nl = GetNextLevel($e, $l);
 928
 929         if ($l->{TYPE} eq "POINTER") {
 930                 if ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE})) {
 931                         $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $py_var, $e, $nl, $var_name, $fail);
 932                         return;
 933                 }
 934                 if ($l->{POINTER_TYPE} ne "ref") {
 935                         $self->pidl("if ($py_var == Py_None) {");
 936                         $self->indent;
 937                         $self->pidl("$var_name = NULL;");
 938                         $self->deindent;
 939                         $self->pidl("} else {");
 940                         $self->indent;
 941                 }
 942                 $self->pidl("$var_name = talloc_ptrtype($mem_ctx, $var_name);");
 943                 $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $py_var, $e, $nl, get_value_of($var_name), $fail);
 944                 if ($l->{POINTER_TYPE} ne "ref") {
 945                         $self->deindent;
 946                         $self->pidl("}");
 947                 }
 948         } elsif ($l->{TYPE} eq "ARRAY") {
 949                 my $pl = GetPrevLevel($e, $l);
 950                 if ($pl && $pl->{TYPE} eq "POINTER") {
 951                         $var_name = get_pointer_to($var_name);
 952                 }
 953
 954                 if (is_charset_array($e, $l)) {
 955                         $self->pidl("PY_CHECK_TYPE(PyUnicode, $py_var, $fail);");
 956                         # FIXME: Use Unix charset setting rather than utf-8
 957                         $self->pidl($var_name . " = PyString_AsString(PyUnicode_AsEncodedString($py_var, \"utf-8\", \"ignore\"));");
 958                 } else {
 959                         my $counter = "$e->{NAME}_cntr_$l->{LEVEL_INDEX}";
 960                         $self->pidl("PY_CHECK_TYPE(PyList, $py_var, $fail);");
 961                         $self->pidl("{");
 962                         $self->indent;
 963                         $self->pidl("int $counter;");
 964                         if (ArrayDynamicallyAllocated($e, $l)) {
 965                                 $self->pidl("$var_name = talloc_array_ptrtype($mem_ctx, $var_name, PyList_Size($py_var));");
 966                         }
 967                         $self->pidl("for ($counter = 0; $counter < PyList_Size($py_var); $counter++) {");
 968                         $self->indent;
 969                         $self->ConvertObjectFromPythonLevel($env, $var_name, "PyList_GetItem($py_var, $counter)", $e, GetNextLevel($e, $l), $var_name."[$counter]", $fail);
 970                         $self->deindent;
 971                         $self->pidl("}");
 972                         $self->deindent;
 973                         $self->pidl("}");
 974                 }
 975         } elsif ($l->{TYPE} eq "DATA") {
 976
 977                 if (not Parse::Pidl::Typelist::is_scalar($l->{DATA_TYPE})) {
 978                         $var_name = get_pointer_to($var_name);
 979                 }
 980                 $self->ConvertObjectFromPythonData($mem_ctx, $py_var, $l->{DATA_TYPE}, $var_name, $fail);
 981         } elsif ($l->{TYPE} eq "SWITCH") {
 982                 $var_name = get_pointer_to($var_name);
 983                 my $switch = ParseExpr($l->{SWITCH_IS}, $env, $e);
 984                 $self->assign($var_name, "py_export_" . GetNextLevel($e, $l)->{DATA_TYPE} . "($mem_ctx, $switch, $py_var)");
 985         } elsif ($l->{TYPE} eq "SUBCONTEXT") {
 986                 $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $py_var, $e, GetNextLevel($e, $l), $var_name, $fail);
 987         } else {
 988                 die("unknown level type $l->{TYPE}");
 989         }
 990 }
 991
 992 sub ConvertObjectFromPython($$$$$$$)
 993 {
 994         my ($self, $env, $mem_ctx, $ctype, $cvar, $target, $fail) = @_;
 995
 996         $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $cvar, $ctype, $ctype->{LEVELS}[0], $target, $fail);
 997 }
 998
 999 sub ConvertScalarToPython($$$)
1000 {
1001         my ($self, $ctypename, $cvar) = @_;
1002
1003         die("expected string for $cvar, not $ctypename") if (ref($ctypename) eq "HASH");
1004
1005         $ctypename = expandAlias($ctypename);
1006
1007         if ($ctypename =~ /^(char|u?int[0-9]*|hyper|dlong|udlong|udlongr|time_t|NTTIME_hyper|NTTIME|NTTIME_1sec)$/) {
1008                 return "PyInt_FromLong($cvar)";
1009         }
1010
1011         if ($ctypename eq "DATA_BLOB") {
1012                 return "PyString_FromStringAndSize((char *)($cvar).data, ($cvar).length)";
1013         }
1014
1015         if ($ctypename eq "NTSTATUS") {
1016                 return "PyErr_FromNTSTATUS($cvar)";
1017         }
1018
1019         if ($ctypename eq "WERROR") {
1020                 return "PyErr_FromWERROR($cvar)";
1021         }
1022
1023         if (($ctypename eq "string" or $ctypename eq "nbt_string" or $ctypename eq "nbt_name" or $ctypename eq "wrepl_nbt_name")) {
1024                 return "PyString_FromString($cvar)";
1025         }
1026
1027         # Not yet supported
1028         if ($ctypename eq "string_array") { return "PyCObject_FromVoidPtr($cvar)"; }
1029         if ($ctypename eq "ipv4address") { return "PyString_FromString($cvar)"; }
1030         if ($ctypename eq "pointer") {
1031                 return "PyCObject_FromVoidPtr($cvar, talloc_free)";
1032         }
1033
1034         die("Unknown scalar type $ctypename");
1035 }
1036
1037 sub ConvertObjectToPythonData($$$$$)
1038 {
1039         my ($self, $mem_ctx, $ctype, $cvar) = @_;
1040
1041         die("undef type for $cvar") unless(defined($ctype));
1042
1043         $ctype = resolveType($ctype);
1044
1045         my $actual_ctype = $ctype;
1046         if ($ctype->{TYPE} eq "TYPEDEF") {
1047                 $actual_ctype = $ctype->{DATA};
1048         }
1049
1050         if ($actual_ctype->{TYPE} eq "ENUM") {
1051                 return $self->ConvertScalarToPython(Parse::Pidl::Typelist::enum_type_fn($actual_ctype), $cvar);
1052         } elsif ($actual_ctype->{TYPE} eq "BITMAP") {
1053                 return $self->ConvertScalarToPython(Parse::Pidl::Typelist::bitmap_type_fn($actual_ctype), $cvar);
1054         } elsif ($actual_ctype->{TYPE} eq "SCALAR") {
1055                 return $self->ConvertScalarToPython($actual_ctype->{NAME}, $cvar);
1056         } elsif ($actual_ctype->{TYPE} eq "UNION") {
1057                 fatal($ctype, "union without discriminant: " . mapTypeName($ctype) . ": $cvar");
1058         } elsif ($actual_ctype->{TYPE} eq "STRUCT" or $actual_ctype->{TYPE} eq "INTERFACE") {
1059                 return "py_talloc_import_ex(&$ctype->{NAME}_Type, $mem_ctx, $cvar)";
1060         }
1061
1062         fatal($ctype, "unknown type $actual_ctype->{TYPE} for ".mapTypeName($ctype) . ": $cvar");
1063 }
1064
1065 sub fail_on_null($$$)
1066 {
1067         my ($self, $var, $fail) = @_;
1068         $self->pidl("if ($var == NULL) {");
1069         $self->indent;
1070         $self->pidl($fail);
1071         $self->deindent;
1072         $self->pidl("}");
1073 }
1074
1075 sub ConvertObjectToPythonLevel($$$$$$)
1076 {
1077         my ($self, $mem_ctx, $env, $e, $l, $var_name, $py_var, $fail) = @_;
1078         my $nl = GetNextLevel($e, $l);
1079
1080         if ($l->{TYPE} eq "POINTER") {
1081                 if ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE})) {
1082                         $self->ConvertObjectToPythonLevel($var_name, $env, $e, $nl, $var_name, $py_var, $fail);
1083                         return;
1084                 }
1085                 if ($l->{POINTER_TYPE} ne "ref") {
1086                         $self->pidl("if ($var_name == NULL) {");
1087                         $self->indent;
1088                         $self->pidl("$py_var = Py_None;");
1089                         $self->deindent;
1090                         $self->pidl("} else {");
1091                         $self->indent;
1092                 }
1093                 $self->ConvertObjectToPythonLevel($var_name, $env, $e, $nl, get_value_of($var_name), $py_var, $fail);
1094                 if ($l->{POINTER_TYPE} ne "ref") {
1095                         $self->deindent;
1096                         $self->pidl("}");
1097                 }
1098         } elsif ($l->{TYPE} eq "ARRAY") {
1099                 my $pl = GetPrevLevel($e, $l);
1100                 if ($pl && $pl->{TYPE} eq "POINTER") {
1101                         $var_name = get_pointer_to($var_name);
1102                 }
1103
1104                 if (is_charset_array($e, $l)) {
1105                         # FIXME: Use Unix charset setting rather than utf-8
1106                         $self->pidl("$py_var = PyUnicode_Decode($var_name, strlen($var_name), \"utf-8\", \"ignore\");");
1107                 } else {
1108                         die("No SIZE_IS for array $var_name") unless (defined($l->{SIZE_IS}));
1109                         my $length = $l->{SIZE_IS};
1110                         if (defined($l->{LENGTH_IS})) {
1111                                 $length = $l->{LENGTH_IS};
1112                         }
1113
1114                         $length = ParseExpr($length, $env, $e);
1115                         $self->pidl("$py_var = PyList_New($length);");
1116                         $self->fail_on_null($py_var, $fail);
1117                         $self->pidl("{");
1118                         $self->indent;
1119                         my $counter = "$e->{NAME}_cntr_$l->{LEVEL_INDEX}";
1120                         $self->pidl("int $counter;");
1121                         $self->pidl("for ($counter = 0; $counter < $length; $counter++) {");
1122                         $self->indent;
1123                         my $member_var = "py_$e->{NAME}_$l->{LEVEL_INDEX}";
1124                         $self->pidl("PyObject *$member_var;");
1125                         $self->ConvertObjectToPythonLevel($var_name, $env, $e, GetNextLevel($e, $l), $var_name."[$counter]", $member_var, $fail);
1126                         $self->pidl("PyList_SetItem($py_var, $counter, $member_var);");
1127                         $self->deindent;
1128                         $self->pidl("}");
1129                         $self->deindent;
1130                         $self->pidl("}");
1131                 }
1132         } elsif ($l->{TYPE} eq "SWITCH") {
1133                 $var_name = get_pointer_to($var_name);
1134                 my $switch = ParseExpr($l->{SWITCH_IS}, $env, $e);
1135                 $self->pidl("$py_var = py_import_" . GetNextLevel($e, $l)->{DATA_TYPE} . "($mem_ctx, $switch, $var_name);");
1136                 $self->fail_on_null($py_var, $fail);
1137
1138         } elsif ($l->{TYPE} eq "DATA") {
1139                 if (not Parse::Pidl::Typelist::is_scalar($l->{DATA_TYPE})) {
1140                         $var_name = get_pointer_to($var_name);
1141                 }
1142                 my $conv = $self->ConvertObjectToPythonData($mem_ctx, $l->{DATA_TYPE}, $var_name);
1143                 $self->pidl("$py_var = $conv;");
1144         } elsif ($l->{TYPE} eq "SUBCONTEXT") {
1145                 $self->ConvertObjectToPythonLevel($mem_ctx, $env, $e, GetNextLevel($e, $l), $var_name, $py_var, $fail);
1146         } else {
1147                 die("Unknown level type $l->{TYPE} $var_name");
1148         }
1149 }
1150
1151 sub ConvertObjectToPython($$$$$$)
1152 {
1153         my ($self, $mem_ctx, $env, $ctype, $cvar, $py_var, $fail) = @_;
1154
1155         $self->ConvertObjectToPythonLevel($mem_ctx, $env, $ctype, $ctype->{LEVELS}[0], $cvar, $py_var, $fail);
1156 }
1157
1158 sub Parse($$$$$)
1159 {
1160     my($self,$basename,$ndr,$ndr_hdr,$hdr) = @_;
1161
1162     my $py_hdr = $hdr;
1163     $py_hdr =~ s/ndr_([^\/]+)$/py_$1/g;
1164
1165     $self->pidl_hdr("/* header auto-generated by pidl */\n\n");
1166
1167     $self->pidl("
1168 /* Python wrapper functions auto-generated by pidl */
1169 #include \"includes.h\"
1170 #include <Python.h>
1171 #include \"librpc/rpc/dcerpc.h\"
1172 #include \"lib/talloc/pytalloc.h\"
1173 #include \"librpc/rpc/pyrpc.h\"
1174 #include \"lib/events/events.h\"
1175 #include \"$hdr\"
1176 #include \"$ndr_hdr\"
1177 #include \"$py_hdr\"
1178
1179 ");
1180
1181         foreach my $x (@$ndr) {
1182                 ($x->{TYPE} eq "IMPORT") && $self->Import(@{$x->{PATHS}});
1183             ($x->{TYPE} eq "INTERFACE") && $self->Interface($x, $basename);
1184         }
1185
1186         $self->pidl("static PyMethodDef $basename\_methods[] = {");
1187         $self->indent;
1188         foreach (@{$self->{module_methods}}) {
1189                 my ($fn_name, $pyfn_name, $flags, $doc) = @$_;
1190                 $self->pidl("{ \"$fn_name\", (PyCFunction)$pyfn_name, $flags, $doc },");
1191         }
1192
1193         $self->pidl("{ NULL, NULL, 0, NULL }");
1194         $self->deindent;
1195         $self->pidl("};");
1196
1197         $self->pidl("");
1198
1199         $self->pidl("void init$basename(void)");
1200         $self->pidl("{");
1201         $self->indent;
1202         $self->pidl("PyObject *m;");
1203         $self->pidl("");
1204
1205         foreach (@{$self->{ready_types}}) {
1206                 $self->pidl("if (PyType_Ready($_) < 0)");
1207                 $self->pidl("\treturn;");
1208         }
1209
1210         $self->pidl($_) foreach (@{$self->{readycode}});
1211
1212         foreach (@{$self->{patch_type_calls}}) {
1213                 my ($typename, $cvar) = @$_;
1214                 $self->pidl("#ifdef PY_".uc($typename)."_PATCH");
1215                 $self->pidl("PY_".uc($typename)."_PATCH($cvar);");
1216                 $self->pidl("#endif");
1217         }
1218
1219         $self->pidl("");
1220
1221         $self->pidl("m = Py_InitModule3(\"$basename\", $basename\_methods, \"$basename DCE/RPC\");");
1222         $self->pidl("if (m == NULL)");
1223         $self->pidl("\treturn;");
1224         $self->pidl("");
1225         foreach my $name (keys %{$self->{constants}}) {
1226                 my $py_obj;
1227                 my ($ctype, $cvar) = @{$self->{constants}->{$name}};
1228                 if ($cvar =~ /^[0-9]+$/ or $cvar =~ /^0x[0-9a-fA-F]+$/) {
1229                         $py_obj = "PyInt_FromLong($cvar)";
1230                 } elsif ($cvar =~ /^".*"$/) {
1231                         $py_obj = "PyString_FromString($cvar)";
1232                 } else {
1233                         $py_obj = $self->ConvertObjectToPythonData("NULL", expandAlias($ctype), $cvar);
1234                 }
1235
1236                 $self->pidl("PyModule_AddObject(m, \"$name\", $py_obj);");
1237         }
1238
1239         foreach (@{$self->{module_objects}}) {
1240                 my ($object_name, $c_name) = @$_;
1241                 $self->pidl("Py_INCREF($c_name);");
1242                 $self->pidl("PyModule_AddObject(m, \"$object_name\", $c_name);");
1243         }
1244
1245         $self->pidl("#ifdef PY_MOD_".uc($basename)."_PATCH");
1246         $self->pidl("PY_MOD_".uc($basename)."_PATCH(m);");
1247         $self->pidl("#endif");
1248
1249         $self->pidl("");
1250         $self->deindent;
1251         $self->pidl("}");
1252     return ($self->{res_hdr}, $self->{res});
1253 }
1254
1255 1;