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