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

   1 ###################################################
   2 # Python function wrapper generator
   3 # Copyright jelmer@samba.org 2007-2008
   4 # released under the GNU GPL
   5
   6 package Parse::Pidl::Samba4::Python;
   7
   8 use Exporter;
   9 @ISA = qw(Exporter);
  10
  11 use strict;
  12 use Parse::Pidl qw(warning fatal error);
  13 use Parse::Pidl::Typelist qw(hasType resolveType getType mapTypeName expandAlias);
  14 use Parse::Pidl::Util qw(has_property ParseExpr unmake_str);
  15 use Parse::Pidl::NDR qw(GetPrevLevel GetNextLevel ContainsDeferred ContainsPipe is_charset_array);
  16 use Parse::Pidl::CUtil qw(get_value_of get_pointer_to);
  17 use Parse::Pidl::Samba4 qw(ArrayDynamicallyAllocated);
  18 use Parse::Pidl::Samba4::Header qw(GenerateFunctionInEnv GenerateFunctionOutEnv EnvSubstituteValue GenerateStructEnv);
  19
  20 use vars qw($VERSION);
  21 $VERSION = '0.01';
  22
  23 sub new($) {
  24         my ($class) = @_;
  25         my $self = { res => "", res_hdr => "", tabs => "", constants => {},
  26                      module_methods => [], module_objects => [], ready_types => [],
  27                                  module_imports => {}, type_imports => {},
  28                                  patch_type_calls => [], prereadycode => [],
  29                                  postreadycode => []};
  30         bless($self, $class);
  31 }
  32
  33 sub pidl_hdr ($$)
  34 {
  35         my $self = shift;
  36         $self->{res_hdr} .= shift;
  37 }
  38
  39 sub pidl($$)
  40 {
  41         my ($self, $d) = @_;
  42         if ($d) {
  43                 if ((!($d =~ /^#/))) {
  44                         $self->{res} .= $self->{tabs};
  45                 }
  46                 $self->{res} .= $d;
  47         }
  48         $self->{res} .= "\n";
  49 }
  50
  51 sub indent($)
  52 {
  53         my ($self) = @_;
  54         $self->{tabs} .= "\t";
  55 }
  56
  57 sub deindent($)
  58 {
  59         my ($self) = @_;
  60         $self->{tabs} = substr($self->{tabs}, 0, -1);
  61 }
  62
  63 sub PrettifyTypeName($$)
  64 {
  65         my ($name, $basename) = @_;
  66
  67         $basename =~ s/^.*\.([^.]+)$/\1/;
  68
  69         $name =~ s/^$basename\_//;
  70
  71
  72         return $name;
  73 }
  74
  75 sub Import
  76 {
  77         my $self = shift;
  78         my @imports = @_;
  79         foreach (@imports) {
  80                 $_ = unmake_str($_);
  81                 s/\.idl$//;
  82                 $self->pidl_hdr("#include \"librpc/gen_ndr/$_\.h\"\n");
  83                 $self->register_module_import("samba.dcerpc.$_");
  84         }
  85 }
  86
  87 sub Const($$)
  88 {
  89     my ($self, $const) = @_;
  90         $self->register_constant($const->{NAME}, $const->{DTYPE}, $const->{VALUE});
  91 }
  92
  93 sub register_constant($$$$)
  94 {
  95         my ($self, $name, $type, $value) = @_;
  96
  97         $self->{constants}->{$name} = [$type, $value];
  98 }
  99
 100 sub EnumAndBitmapConsts($$$)
 101 {
 102         my ($self, $name, $d) = @_;
 103
 104         return unless (defined($d->{ELEMENTS}));
 105
 106         foreach my $e (@{$d->{ELEMENTS}}) {
 107                 $e =~ /^([A-Za-z0-9_]+)/;
 108                 my $cname = $1;
 109
 110                 $self->register_constant($cname, $d, $cname);
 111         }
 112 }
 113
 114 sub FromUnionToPythonFunction($$$$)
 115 {
 116         my ($self, $mem_ctx, $type, $switch, $name) = @_;
 117
 118         $self->pidl("PyObject *ret;");
 119         $self->pidl("");
 120
 121         $self->pidl("switch ($switch) {");
 122         $self->indent;
 123
 124         foreach my $e (@{$type->{ELEMENTS}}) {
 125                 $self->pidl("$e->{CASE}:");
 126
 127                 $self->indent;
 128
 129                 if ($e->{NAME}) {
 130                         $self->ConvertObjectToPython($mem_ctx, {}, $e, "$name->$e->{NAME}", "ret", "return NULL;");
 131                 } else {
 132                         $self->pidl("ret = Py_None;");
 133                         $self->pidl("Py_INCREF(ret);");
 134                 }
 135
 136                 $self->pidl("return ret;");
 137                 $self->pidl("");
 138
 139                 $self->deindent;
 140         }
 141
 142         $self->deindent;
 143         $self->pidl("}");
 144
 145         $self->pidl("PyErr_SetString(PyExc_TypeError, \"unknown union level\");");
 146         $self->pidl("return NULL;");
 147 }
 148
 149 sub FromPythonToUnionFunction($$$$$)
 150 {
 151         my ($self, $type, $typename, $switch, $mem_ctx, $name) = @_;
 152
 153         my $has_default = 0;
 154
 155         $self->pidl("$typename *ret = talloc_zero($mem_ctx, $typename);");
 156
 157         $self->pidl("switch ($switch) {");
 158         $self->indent;
 159
 160         foreach my $e (@{$type->{ELEMENTS}}) {
 161                 $self->pidl("$e->{CASE}:");
 162                 if ($e->{CASE} eq "default") { $has_default = 1; }
 163                 $self->indent;
 164                 if ($e->{NAME}) {
 165                         $self->ConvertObjectFromPython({}, $mem_ctx, $e, $name, "ret->$e->{NAME}", "talloc_free(ret); return NULL;");
 166                 }
 167                 $self->pidl("break;");
 168                 $self->deindent;
 169                 $self->pidl("");
 170         }
 171
 172         if (!$has_default) {
 173                 $self->pidl("default:");
 174                 $self->indent;
 175                 $self->pidl("PyErr_SetString(PyExc_TypeError, \"invalid union level value\");");
 176                 $self->pidl("talloc_free(ret);");
 177                 $self->pidl("ret = NULL;");
 178                 $self->deindent;
 179         }
 180
 181         $self->deindent;
 182         $self->pidl("}");
 183         $self->pidl("");
 184         $self->pidl("return ret;");
 185 }
 186
 187 sub PythonStruct($$$$$$)
 188 {
 189         my ($self, $modulename, $prettyname, $name, $cname, $d) = @_;
 190
 191         my $env = GenerateStructEnv($d, "object");
 192
 193         $self->pidl("");
 194
 195         my $getsetters = "NULL";
 196
 197         if ($#{$d->{ELEMENTS}} > -1) {
 198                 foreach my $e (@{$d->{ELEMENTS}}) {
 199                         my $varname = "object->$e->{NAME}";
 200                         $self->pidl("static PyObject *py_$name\_get_$e->{NAME}(PyObject *obj, void *closure)");
 201                         $self->pidl("{");
 202                         $self->indent;
 203                         $self->pidl("$cname *object = ($cname *)pytalloc_get_ptr(obj);");
 204                         $self->pidl("PyObject *py_$e->{NAME};");
 205                         $self->ConvertObjectToPython("pytalloc_get_mem_ctx(obj)", $env, $e, $varname, "py_$e->{NAME}", "return NULL;");
 206                         $self->pidl("return py_$e->{NAME};");
 207                         $self->deindent;
 208                         $self->pidl("}");
 209                         $self->pidl("");
 210
 211                         $self->pidl("static int py_$name\_set_$e->{NAME}(PyObject *py_obj, PyObject *value, void *closure)");
 212                         $self->pidl("{");
 213                         $self->indent;
 214                         $self->pidl("$cname *object = ($cname *)pytalloc_get_ptr(py_obj);");
 215                         my $mem_ctx = "pytalloc_get_mem_ctx(py_obj)";
 216                         my $l = $e->{LEVELS}[0];
 217                         my $nl = GetNextLevel($e, $l);
 218                         if ($l->{TYPE} eq "POINTER" and
 219                                 not ($nl->{TYPE} eq "ARRAY" and ($nl->{IS_FIXED} or is_charset_array($e, $nl))) and
 220                                 not ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE}))) {
 221                                 $self->pidl("talloc_unlink(pytalloc_get_mem_ctx(py_obj), $varname);");
 222                         }
 223                         $self->ConvertObjectFromPython($env, $mem_ctx, $e, "value", $varname, "return -1;");
 224                         $self->pidl("return 0;");
 225                         $self->deindent;
 226                         $self->pidl("}");
 227                         $self->pidl("");
 228                 }
 229
 230                 $getsetters = "py_$name\_getsetters";
 231                 $self->pidl("static PyGetSetDef ".$getsetters."[] = {");
 232                 $self->indent;
 233                 foreach my $e (@{$d->{ELEMENTS}}) {
 234                         $self->pidl("{ discard_const_p(char, \"$e->{NAME}\"), py_$name\_get_$e->{NAME}, py_$name\_set_$e->{NAME} },");
 235                 }
 236                 $self->pidl("{ NULL }");
 237                 $self->deindent;
 238                 $self->pidl("};");
 239                 $self->pidl("");
 240         }
 241
 242         $self->pidl("static PyObject *py_$name\_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)");
 243         $self->pidl("{");
 244         $self->indent;
 245         $self->pidl("return pytalloc_new($cname, type);");
 246         $self->deindent;
 247         $self->pidl("}");
 248         $self->pidl("");
 249
 250         my $py_methods = "NULL";
 251
 252         # If the struct is not public there ndr_pull/ndr_push functions will
 253         # be static so not callable from here
 254         if (has_property($d, "public")) {
 255                 $self->pidl("static PyObject *py_$name\_ndr_pack(PyObject *py_obj)");
 256                 $self->pidl("{");
 257                 $self->indent;
 258                 $self->pidl("$cname *object = ($cname *)pytalloc_get_ptr(py_obj);");
 259                 $self->pidl("DATA_BLOB blob;");
 260                 $self->pidl("enum ndr_err_code err;");
 261                 $self->pidl("err = ndr_push_struct_blob(&blob, pytalloc_get_mem_ctx(py_obj), object, (ndr_push_flags_fn_t)ndr_push_$name);");
 262                 $self->pidl("if (err != NDR_ERR_SUCCESS) {");
 263                 $self->indent;
 264                 $self->pidl("PyErr_SetNdrError(err);");
 265                 $self->pidl("return NULL;");
 266                 $self->deindent;
 267                 $self->pidl("}");
 268                 $self->pidl("");
 269                 $self->pidl("return PyString_FromStringAndSize((char *)blob.data, blob.length);");
 270                 $self->deindent;
 271                 $self->pidl("}");
 272                 $self->pidl("");
 273
 274                 $self->pidl("static PyObject *py_$name\_ndr_unpack(PyObject *py_obj, PyObject *args)");
 275                 $self->pidl("{");
 276                 $self->indent;
 277                 $self->pidl("$cname *object = ($cname *)pytalloc_get_ptr(py_obj);");
 278                 $self->pidl("DATA_BLOB blob;");
 279                 $self->pidl("int blob_length = 0;");
 280                 $self->pidl("enum ndr_err_code err;");
 281                 $self->pidl("if (!PyArg_ParseTuple(args, \"s#:__ndr_unpack__\", &blob.data, &blob_length)) {");
 282                 $self->indent;
 283                 $self->pidl("return NULL;");
 284                 $self->deindent;
 285                 $self->pidl("}");
 286                 $self->pidl("blob.length = blob_length;");
 287                 $self->pidl("");
 288                 $self->pidl("err = ndr_pull_struct_blob_all(&blob, pytalloc_get_mem_ctx(py_obj), object, (ndr_pull_flags_fn_t)ndr_pull_$name);");
 289                 $self->pidl("if (err != NDR_ERR_SUCCESS) {");
 290                 $self->indent;
 291                 $self->pidl("PyErr_SetNdrError(err);");
 292                 $self->pidl("return NULL;");
 293                 $self->deindent;
 294                 $self->pidl("}");
 295                 $self->pidl("");
 296                 $self->pidl("Py_RETURN_NONE;");
 297                 $self->deindent;
 298                 $self->pidl("}");
 299                 $self->pidl("");
 300
 301                 $self->pidl("static PyObject *py_$name\_ndr_print(PyObject *py_obj)");
 302                 $self->pidl("{");
 303                 $self->indent;
 304                 $self->pidl("$cname *object = ($cname *)pytalloc_get_ptr(py_obj);");
 305                 $self->pidl("PyObject *ret;");
 306                 $self->pidl("char *retstr;");
 307                 $self->pidl("");
 308                 $self->pidl("retstr = ndr_print_struct_string(pytalloc_get_mem_ctx(py_obj), (ndr_print_fn_t)ndr_print_$name, \"$name\", object);");
 309                 $self->pidl("ret = PyString_FromString(retstr);");
 310                 $self->pidl("talloc_free(retstr);");
 311                 $self->pidl("");
 312                 $self->pidl("return ret;");
 313                 $self->deindent;
 314                 $self->pidl("}");
 315                 $self->pidl("");
 316
 317                 $py_methods = "py_$name\_methods";
 318                 $self->pidl("static PyMethodDef $py_methods\[] = {");
 319                 $self->indent;
 320                 $self->pidl("{ \"__ndr_pack__\", (PyCFunction)py_$name\_ndr_pack, METH_NOARGS, \"S.ndr_pack(object) -> blob\\nNDR pack\" },");
 321                 $self->pidl("{ \"__ndr_unpack__\", (PyCFunction)py_$name\_ndr_unpack, METH_VARARGS, \"S.ndr_unpack(class, blob) -> None\\nNDR unpack\" },");
 322                 $self->pidl("{ \"__ndr_print__\", (PyCFunction)py_$name\_ndr_print, METH_VARARGS, \"S.ndr_print(object) -> None\\nNDR print\" },");
 323                 $self->pidl("{ NULL, NULL, 0, NULL }");
 324                 $self->deindent;
 325                 $self->pidl("};");
 326                 $self->pidl("");
 327         }
 328
 329         $self->pidl_hdr("staticforward PyTypeObject $name\_Type;\n");
 330         $self->pidl("");
 331         my $docstring = $self->DocString($d, $name);
 332         my $typeobject = "$name\_Type";
 333         $self->pidl("static PyTypeObject $typeobject = {");
 334         $self->indent;
 335         $self->pidl("PyObject_HEAD_INIT(NULL) 0,");
 336         $self->pidl(".tp_name = \"$modulename.$prettyname\",");
 337         $self->pidl(".tp_getset = $getsetters,");
 338         if ($docstring) {
 339                 $self->pidl(".tp_doc = $docstring,");
 340         }
 341         $self->pidl(".tp_methods = $py_methods,");
 342         $self->pidl(".tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,");
 343         $self->pidl(".tp_basicsize = sizeof(pytalloc_Object),");
 344         $self->pidl(".tp_new = py_$name\_new,");
 345         $self->deindent;
 346         $self->pidl("};");
 347
 348         $self->pidl("");
 349
 350         my $talloc_typename = $self->import_type_variable("talloc", "Object");
 351         $self->register_module_prereadycode(["$name\_Type.tp_base = $talloc_typename;", ""]);
 352
 353         return "&$typeobject";
 354 }
 355
 356 sub get_metadata_var($)
 357 {
 358         my ($e) = @_;
 359         sub get_var($) { my $x = shift; $x =~ s/\*//g; return $x; }
 360
 361          if (has_property($e, "length_is")) {
 362                 return get_var($e->{PROPERTIES}->{length_is});
 363          } elsif (has_property($e, "size_is")) {
 364                 return get_var($e->{PROPERTIES}->{size_is});
 365          }
 366
 367          return undef;
 368 }
 369
 370 sub find_metadata_args($)
 371 {
 372         my ($fn) = @_;
 373         my $metadata_args = { in => {}, out => {} };
 374
 375         # Determine arguments that are metadata for other arguments (size_is/length_is)
 376         foreach my $e (@{$fn->{ELEMENTS}}) {
 377                 foreach my $dir (@{$e->{DIRECTION}}) {
 378                          my $main = get_metadata_var($e);
 379                          if ($main) {
 380                                  $metadata_args->{$dir}->{$main} = $e->{NAME};
 381                          }
 382                  }
 383         }
 384
 385         return $metadata_args;
 386 }
 387
 388 sub PythonFunctionUnpackOut($$$)
 389 {
 390         my ($self, $fn, $fnname) = @_;
 391
 392         my $outfnname = "unpack_$fnname\_args_out";
 393         my $signature = "";
 394
 395         my $metadata_args = find_metadata_args($fn);
 396
 397         my $env = GenerateFunctionOutEnv($fn, "r->");
 398         my $result_size = 0;
 399
 400         $self->pidl("static PyObject *$outfnname(struct $fn->{NAME} *r)");
 401         $self->pidl("{");
 402         $self->indent;
 403         $self->pidl("PyObject *result;");
 404         foreach my $e (@{$fn->{ELEMENTS}}) {
 405                 next unless (grep(/out/,@{$e->{DIRECTION}}));
 406                 next if (($metadata_args->{in}->{$e->{NAME}} and grep(/in/, @{$e->{DIRECTION}})) or
 407                          ($metadata_args->{out}->{$e->{NAME}}) and grep(/out/, @{$e->{DIRECTION}}));
 408                 $self->pidl("PyObject *py_$e->{NAME};");
 409                 $result_size++;
 410         }
 411
 412         if ($fn->{RETURN_TYPE}) {
 413                 $result_size++ unless ($fn->{RETURN_TYPE} eq "WERROR" or $fn->{RETURN_TYPE} eq "NTSTATUS");
 414         }
 415
 416         my $i = 0;
 417
 418         if ($result_size > 1) {
 419                 $self->pidl("result = PyTuple_New($result_size);");
 420                 $signature .= "(";
 421         } elsif ($result_size == 0) {
 422                 $self->pidl("result = Py_None;");
 423                 $self->pidl("Py_INCREF(result);");
 424                 $signature .= "None";
 425         }
 426
 427         foreach my $e (@{$fn->{ELEMENTS}}) {
 428                 next if ($metadata_args->{out}->{$e->{NAME}});
 429                 my $py_name = "py_$e->{NAME}";
 430                 if (grep(/out/,@{$e->{DIRECTION}})) {
 431                         $self->ConvertObjectToPython("r", $env, $e, "r->out.$e->{NAME}", $py_name, "return NULL;");
 432                         if ($result_size > 1) {
 433                                 $self->pidl("PyTuple_SetItem(result, $i, $py_name);");
 434                                 $i++;
 435                                 $signature .= "$e->{NAME}, ";
 436                         } else {
 437                                 $self->pidl("result = $py_name;");
 438                                 $signature .= $e->{NAME};
 439                         }
 440                 }
 441         }
 442
 443         if (defined($fn->{RETURN_TYPE}) and $fn->{RETURN_TYPE} eq "NTSTATUS") {
 444                 $self->handle_ntstatus("r->out.result", "NULL", undef);
 445         } elsif (defined($fn->{RETURN_TYPE}) and $fn->{RETURN_TYPE} eq "WERROR") {
 446                 $self->handle_werror("r->out.result", "NULL", undef);
 447         } elsif (defined($fn->{RETURN_TYPE})) {
 448                 my $conv = $self->ConvertObjectToPythonData("r", $fn->{RETURN_TYPE}, "r->out.result", $fn);
 449                 if ($result_size > 1) {
 450                         $self->pidl("PyTuple_SetItem(result, $i, $conv);");
 451                 } else {
 452                         $self->pidl("result = $conv;");
 453                 }
 454                 $signature .= "result";
 455         }
 456
 457         if (substr($signature, -2) eq ", ") {
 458                 $signature = substr($signature, 0, -2);
 459         }
 460         if ($result_size > 1) {
 461                 $signature .= ")";
 462         }
 463
 464         $self->pidl("return result;");
 465         $self->deindent;
 466         $self->pidl("}");
 467         $self->pidl("");
 468
 469         return ($outfnname, $signature);
 470 }
 471
 472 sub PythonFunctionPackIn($$$)
 473 {
 474         my ($self, $fn, $fnname) = @_;
 475         my $metadata_args = find_metadata_args($fn);
 476
 477         my $infnname = "pack_$fnname\_args_in";
 478
 479         $self->pidl("static bool $infnname(PyObject *args, PyObject *kwargs, struct $fn->{NAME} *r)");
 480         $self->pidl("{");
 481         $self->indent;
 482         my $args_format = "";
 483         my $args_string = "";
 484         my $args_names = "";
 485         my $signature = "";
 486
 487         foreach my $e (@{$fn->{ELEMENTS}}) {
 488                 next unless (grep(/in/,@{$e->{DIRECTION}}));
 489                 next if (($metadata_args->{in}->{$e->{NAME}} and grep(/in/, @{$e->{DIRECTION}})) or
 490                                  ($metadata_args->{out}->{$e->{NAME}}) and grep(/out/, @{$e->{DIRECTION}}));
 491                 $self->pidl("PyObject *py_$e->{NAME};");
 492                 $args_format .= "O";
 493                 $args_string .= ", &py_$e->{NAME}";
 494                 $args_names .= "\"$e->{NAME}\", ";
 495                 $signature .= "$e->{NAME}, ";
 496         }
 497         if (substr($signature, -2) eq ", ") {
 498                 $signature = substr($signature, 0, -2);
 499         }
 500         $self->pidl("const char *kwnames[] = {");
 501         $self->indent;
 502         $self->pidl($args_names . "NULL");
 503         $self->deindent;
 504         $self->pidl("};");
 505
 506         $self->pidl("");
 507         $self->pidl("if (!PyArg_ParseTupleAndKeywords(args, kwargs, \"$args_format:$fn->{NAME}\", discard_const_p(char *, kwnames)$args_string)) {");
 508         $self->indent;
 509         $self->pidl("return false;");
 510         $self->deindent;
 511         $self->pidl("}");
 512         $self->pidl("");
 513
 514         my $env = GenerateFunctionInEnv($fn, "r->");
 515
 516         my $fail = "return false;";
 517         foreach my $e (@{$fn->{ELEMENTS}}) {
 518                 next unless (grep(/in/,@{$e->{DIRECTION}}));
 519                 if ($metadata_args->{in}->{$e->{NAME}}) {
 520                         my $py_var = "py_".$metadata_args->{in}->{$e->{NAME}};
 521                         $self->pidl("PY_CHECK_TYPE(&PyList_Type, $py_var, $fail);");
 522                         my $val = "PyList_GET_SIZE($py_var)";
 523                         if ($e->{LEVELS}[0]->{TYPE} eq "POINTER") {
 524                                 $self->pidl("r->in.$e->{NAME} = talloc_ptrtype(r, r->in.$e->{NAME});");
 525                                 $self->pidl("*r->in.$e->{NAME} = $val;");
 526                         } else {
 527                                 $self->pidl("r->in.$e->{NAME} = $val;");
 528                         }
 529                 } else {
 530                         $self->ConvertObjectFromPython($env, "r", $e, "py_$e->{NAME}", "r->in.$e->{NAME}", $fail);
 531                 }
 532         }
 533         $self->pidl("return true;");
 534         $self->deindent;
 535         $self->pidl("}");
 536         $self->pidl("");
 537         return ($infnname, $signature);
 538 }
 539
 540 sub PythonFunction($$$)
 541 {
 542         my ($self, $fn, $iface, $prettyname) = @_;
 543
 544         my $fnname = "py_$fn->{NAME}";
 545         my $docstring = $self->DocString($fn, $fn->{NAME});
 546
 547         my ($infn, $insignature) = $self->PythonFunctionPackIn($fn, $fnname);
 548         my ($outfn, $outsignature) = $self->PythonFunctionUnpackOut($fn, $fnname);
 549         my $signature = "S.$prettyname($insignature) -> $outsignature";
 550         if ($docstring) {
 551                 $docstring = "\"$signature\\n\\n\"$docstring";
 552         } else {
 553                 $docstring = "\"$signature\"";
 554         }
 555
 556         return ($infn, $outfn, $docstring);
 557 }
 558
 559 sub handle_werror($$$$)
 560 {
 561         my ($self, $var, $retval, $mem_ctx) = @_;
 562
 563         $self->pidl("if (!W_ERROR_IS_OK($var)) {");
 564         $self->indent;
 565         $self->pidl("PyErr_SetWERROR($var);");
 566         $self->pidl("talloc_free($mem_ctx);") if ($mem_ctx);
 567         $self->pidl("return $retval;");
 568         $self->deindent;
 569         $self->pidl("}");
 570         $self->pidl("");
 571 }
 572
 573 sub handle_ntstatus($$$$)
 574 {
 575         my ($self, $var, $retval, $mem_ctx) = @_;
 576
 577         $self->pidl("if (NT_STATUS_IS_ERR($var)) {");
 578         $self->indent;
 579         $self->pidl("PyErr_SetNTSTATUS($var);");
 580         $self->pidl("talloc_free($mem_ctx);") if ($mem_ctx);
 581         $self->pidl("return $retval;");
 582         $self->deindent;
 583         $self->pidl("}");
 584         $self->pidl("");
 585 }
 586
 587 sub PythonType($$$$)
 588 {
 589         my ($self, $modulename, $d, $interface, $basename) = @_;
 590
 591         my $actual_ctype = $d;
 592         if ($actual_ctype->{TYPE} eq "TYPEDEF") {
 593                 $actual_ctype = $actual_ctype->{DATA};
 594         }
 595
 596         if ($actual_ctype->{TYPE} eq "STRUCT") {
 597                 my $typeobject;
 598                 my $fn_name = PrettifyTypeName($d->{NAME}, $basename);
 599
 600                 if ($d->{TYPE} eq "STRUCT") {
 601                         $typeobject = $self->PythonStruct($modulename, $fn_name, $d->{NAME}, mapTypeName($d), $d);
 602                 } else {
 603                         $typeobject = $self->PythonStruct($modulename, $fn_name, $d->{NAME}, mapTypeName($d), $d->{DATA});
 604                 }
 605
 606                 $self->register_module_typeobject($fn_name, $typeobject);
 607         }
 608
 609         if ($d->{TYPE} eq "ENUM" or $d->{TYPE} eq "BITMAP") {
 610                 $self->EnumAndBitmapConsts($d->{NAME}, $d);
 611         }
 612
 613         if ($d->{TYPE} eq "TYPEDEF" and ($d->{DATA}->{TYPE} eq "ENUM" or $d->{DATA}->{TYPE} eq "BITMAP")) {
 614                 $self->EnumAndBitmapConsts($d->{NAME}, $d->{DATA});
 615         }
 616
 617         if ($actual_ctype->{TYPE} eq "UNION" and defined($actual_ctype->{ELEMENTS})) {
 618                 $self->pidl("PyObject *py_import_$d->{NAME}(TALLOC_CTX *mem_ctx, int level, " .mapTypeName($d) . " *in)");
 619                 $self->pidl("{");
 620                 $self->indent;
 621                 $self->FromUnionToPythonFunction("mem_ctx", $actual_ctype, "level", "in") if ($actual_ctype->{TYPE} eq "UNION");
 622                 $self->deindent;
 623                 $self->pidl("}");
 624                 $self->pidl("");
 625
 626                 $self->pidl(mapTypeName($d) . " *py_export_$d->{NAME}(TALLOC_CTX *mem_ctx, int level, PyObject *in)");
 627                 $self->pidl("{");
 628                 $self->indent;
 629                 $self->FromPythonToUnionFunction($actual_ctype, mapTypeName($d), "level", "mem_ctx", "in") if ($actual_ctype->{TYPE} eq "UNION");
 630                 $self->deindent;
 631                 $self->pidl("}");
 632                 $self->pidl("");
 633         }
 634 }
 635
 636 sub DocString($$$)
 637 {
 638         my ($self, $d, $name) = @_;
 639         if (has_property($d, "helpstring")) {
 640                 my $docstring = uc("py_doc_$name");
 641                 $self->pidl("#define $docstring ".has_property($d, "helpstring"));
 642                 return $docstring;
 643         }
 644
 645         return undef;
 646 }
 647
 648 sub Interface($$$)
 649 {
 650         my($self,$interface,$basename) = @_;
 651
 652         if (has_property($interface, "pyhelper")) {
 653                 $self->pidl("#include \"".unmake_str($interface->{PROPERTIES}->{pyhelper})."\"\n");
 654         }
 655
 656         $self->Const($_) foreach (@{$interface->{CONSTS}});
 657
 658         foreach my $d (@{$interface->{TYPES}}) {
 659                 next if has_property($d, "nopython");
 660
 661                 $self->PythonType($basename, $d, $interface, $basename);
 662         }
 663
 664         if (defined $interface->{PROPERTIES}->{uuid}) {
 665                 $self->pidl_hdr("staticforward PyTypeObject $interface->{NAME}_InterfaceType;\n");
 666                 $self->pidl("");
 667
 668                 my @fns = ();
 669
 670                 foreach my $d (@{$interface->{FUNCTIONS}}) {
 671                         next if has_property($d, "noopnum");
 672                         next if has_property($d, "nopython");
 673                         next if has_property($d, "todo");
 674
 675                         my $skip = 0;
 676                         foreach my $e (@{$d->{ELEMENTS}}) {
 677                                 if (ContainsPipe($e, $e->{LEVELS}[0])) {
 678                                         $skip = 1;
 679                                         last;
 680                                 }
 681                         }
 682                         next if $skip;
 683
 684                         my $prettyname = $d->{NAME};
 685
 686                         $prettyname =~ s/^$interface->{NAME}_//;
 687                         $prettyname =~ s/^$basename\_//;
 688
 689                         my ($infn, $outfn, $fndocstring) = $self->PythonFunction($d, $interface->{NAME}, $prettyname);
 690
 691                         push (@fns, [$infn, $outfn, "dcerpc_$d->{NAME}_r", $prettyname, $fndocstring, $d->{OPNUM}]);
 692                 }
 693
 694                 $self->pidl("const struct PyNdrRpcMethodDef py_ndr_$interface->{NAME}\_methods[] = {");
 695                 $self->indent;
 696                 foreach my $d (@fns) {
 697                         my ($infn, $outfn, $callfn, $prettyname, $docstring, $opnum) = @$d;
 698                         $self->pidl("{ \"$prettyname\", $docstring, (py_dcerpc_call_fn)$callfn, (py_data_pack_fn)$infn, (py_data_unpack_fn)$outfn, $opnum, &ndr_table_$interface->{NAME} },");
 699                 }
 700                 $self->pidl("{ NULL }");
 701                 $self->deindent;
 702                 $self->pidl("};");
 703                 $self->pidl("");
 704
 705                 $self->pidl("static PyObject *interface_$interface->{NAME}_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)");
 706                 $self->pidl("{");
 707                 $self->indent;
 708                 $self->pidl("return py_dcerpc_interface_init_helper(type, args, kwargs, &ndr_table_$interface->{NAME});");
 709                 $self->deindent;
 710                 $self->pidl("}");
 711
 712                 $self->pidl("");
 713
 714                 my $signature =
 715 "\"$interface->{NAME}(binding, lp_ctx=None, credentials=None) -> connection\\n\"
 716 \"\\n\"
 717 \"binding should be a DCE/RPC binding string (for example: ncacn_ip_tcp:127.0.0.1)\\n\"
 718 \"lp_ctx should be a path to a smb.conf file or a param.LoadParm object\\n\"
 719 \"credentials should be a credentials.Credentials object.\\n\\n\"";
 720
 721                 my $docstring = $self->DocString($interface, $interface->{NAME});
 722
 723                 if ($docstring) {
 724                         $docstring = "$signature$docstring";
 725                 } else {
 726                         $docstring = $signature;
 727                 }
 728
 729                 my $if_typename = "$interface->{NAME}_InterfaceType";
 730
 731                 $self->pidl("static PyTypeObject $if_typename = {");
 732                 $self->indent;
 733                 $self->pidl("PyObject_HEAD_INIT(NULL) 0,");
 734                 $self->pidl(".tp_name = \"$basename.$interface->{NAME}\",");
 735                 $self->pidl(".tp_basicsize = sizeof(dcerpc_InterfaceObject),");
 736                 $self->pidl(".tp_doc = $docstring,");
 737                 $self->pidl(".tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,");
 738                 $self->pidl(".tp_new = interface_$interface->{NAME}_new,");
 739                 $self->deindent;
 740                 $self->pidl("};");
 741
 742                 $self->pidl("");
 743
 744                 $self->register_module_typeobject($interface->{NAME}, "&$if_typename");
 745                 my $dcerpc_typename = $self->import_type_variable("samba.dcerpc.base", "ClientConnection");
 746                 $self->register_module_prereadycode(["$if_typename.tp_base = $dcerpc_typename;", ""]);
 747                 $self->register_module_postreadycode(["if (!PyInterface_AddNdrRpcMethods(&$if_typename, py_ndr_$interface->{NAME}\_methods))", "\treturn;", ""]);
 748         }
 749
 750         $self->pidl_hdr("\n");
 751 }
 752
 753 sub register_module_method($$$$$)
 754 {
 755         my ($self, $fn_name, $pyfn_name, $flags, $doc) = @_;
 756
 757         push (@{$self->{module_methods}}, [$fn_name, $pyfn_name, $flags, $doc])
 758 }
 759
 760 sub register_module_typeobject($$$)
 761 {
 762         my ($self, $name, $py_name) = @_;
 763
 764         $self->register_module_object($name, "(PyObject *)(void *)$py_name");
 765
 766         $self->check_ready_type($py_name);
 767
 768         $self->register_patch_type_call($name, $py_name);
 769 }
 770
 771 sub check_ready_type($$)
 772 {
 773         my ($self, $py_name) = @_;
 774         push (@{$self->{ready_types}}, $py_name) unless (grep(/^$py_name$/,@{$self->{ready_types}}));
 775 }
 776
 777 sub register_module_import($$)
 778 {
 779         my ($self, $module_path) = @_;
 780
 781         my $var_name = $module_path;
 782         $var_name =~ s/\./_/g;
 783         $var_name = "dep_$var_name";
 784
 785         $self->{module_imports}->{$var_name} = $module_path;
 786
 787         return $var_name;
 788 }
 789
 790 sub import_type_variable($$$)
 791 {
 792         my ($self, $module, $name) = @_;
 793
 794         $self->register_module_import($module);
 795         unless (defined($self->{type_imports}->{$name})) {
 796                 $self->{type_imports}->{$name} = $module;
 797         }
 798         return "$name\_Type";
 799 }
 800
 801 sub use_type_variable($$)
 802 {
 803         my ($self, $orig_ctype) = @_;
 804         # FIXME: Have a global lookup table for types that look different on the
 805         # wire than they are named in C?
 806         if ($orig_ctype->{NAME} eq "dom_sid2" or $orig_ctype->{NAME} eq "dom_sid28") {
 807                 $orig_ctype->{NAME} = "dom_sid";
 808         }
 809         my $ctype = resolveType($orig_ctype);
 810         unless (defined($ctype->{BASEFILE})) {
 811                 return undef;
 812         }
 813         # If this is an external type, make sure we do the right imports.
 814         if (($ctype->{BASEFILE} ne $self->{BASENAME})) {
 815                 return $self->import_type_variable("samba.dcerpc.$ctype->{BASEFILE}", $ctype->{NAME});
 816         }
 817         return "&$ctype->{NAME}_Type";
 818 }
 819
 820 sub register_patch_type_call($$$)
 821 {
 822         my ($self, $typename, $cvar) = @_;
 823
 824         push(@{$self->{patch_type_calls}}, [$typename, $cvar]);
 825
 826 }
 827
 828 sub register_module_prereadycode($$)
 829 {
 830         my ($self, $code) = @_;
 831
 832         push (@{$self->{prereadycode}}, @$code);
 833 }
 834
 835 sub register_module_postreadycode($$)
 836 {
 837         my ($self, $code) = @_;
 838
 839         push (@{$self->{postreadycode}}, @$code);
 840 }
 841
 842 sub register_module_object($$$)
 843 {
 844         my ($self, $name, $py_name) = @_;
 845
 846         push (@{$self->{module_objects}}, [$name, $py_name])
 847 }
 848
 849 sub assign($$$)
 850 {
 851         my ($self, $dest, $src) = @_;
 852         if ($dest =~ /^\&/ and $src eq "NULL") {
 853                 $self->pidl("memset($dest, 0, sizeof(" . get_value_of($dest) . "));");
 854         } elsif ($dest =~ /^\&/) {
 855                 my $destvar = get_value_of($dest);
 856                 $self->pidl("$destvar = *$src;");
 857         } else {
 858                 $self->pidl("$dest = $src;");
 859         }
 860 }
 861
 862 sub ConvertObjectFromPythonData($$$$$$;$)
 863 {
 864         my ($self, $mem_ctx, $cvar, $ctype, $target, $fail, $location) = @_;
 865
 866         fatal($location, "undef type for $cvar") unless(defined($ctype));
 867
 868         $ctype = resolveType($ctype);
 869
 870         my $actual_ctype = $ctype;
 871         if ($actual_ctype->{TYPE} eq "TYPEDEF") {
 872                 $actual_ctype = $actual_ctype->{DATA};
 873         }
 874
 875         if ($actual_ctype->{TYPE} eq "ENUM" or $actual_ctype->{TYPE} eq "BITMAP") {
 876                 $self->pidl("if (PyLong_Check($cvar)) {");
 877                 $self->indent;
 878                 $self->pidl("$target = PyLong_AsLongLong($cvar);");
 879                 $self->deindent;
 880                 $self->pidl("} else if (PyInt_Check($cvar)) {");
 881                 $self->indent;
 882                 $self->pidl("$target = PyInt_AsLong($cvar);");
 883                 $self->deindent;
 884                 $self->pidl("} else {");
 885                 $self->indent;
 886                 $self->pidl("PyErr_Format(PyExc_TypeError, \"Expected type %s or %s\",\\");
 887                 $self->pidl("  PyInt_Type.tp_name, PyLong_Type.tp_name);");
 888                 $self->pidl($fail);
 889                 $self->deindent;
 890                 $self->pidl("}");
 891                 return;
 892         }
 893         if ($actual_ctype->{TYPE} eq "SCALAR" ) {
 894                 if (expandAlias($actual_ctype->{NAME}) =~ /^(u?int64|hyper|dlong|udlong|udlongr|NTTIME_hyper|NTTIME|NTTIME_1sec)$/) {
 895                         $self->pidl("if (PyLong_Check($cvar)) {");
 896                         $self->indent;
 897                         $self->pidl("$target = PyLong_AsLongLong($cvar);");
 898                         $self->deindent;
 899                         $self->pidl("} else if (PyInt_Check($cvar)) {");
 900                         $self->indent;
 901                         $self->pidl("$target = PyInt_AsLong($cvar);");
 902                         $self->deindent;
 903                         $self->pidl("} else {");
 904                         $self->indent;
 905                         $self->pidl("PyErr_Format(PyExc_TypeError, \"Expected type %s or %s\",\\");
 906                         $self->pidl("  PyInt_Type.tp_name, PyLong_Type.tp_name);");
 907                         $self->pidl($fail);
 908                         $self->deindent;
 909                         $self->pidl("}");
 910                         return;
 911                 }
 912                 if (expandAlias($actual_ctype->{NAME}) =~ /^(char|u?int[0-9]*|time_t|uid_t|gid_t)$/) {
 913                         $self->pidl("PY_CHECK_TYPE(&PyInt_Type, $cvar, $fail);");
 914                         $self->pidl("$target = PyInt_AsLong($cvar);");
 915                         return;
 916                 }
 917         }
 918
 919         if ($actual_ctype->{TYPE} eq "STRUCT" or $actual_ctype->{TYPE} eq "INTERFACE") {
 920                 my $ctype_name = $self->use_type_variable($ctype);
 921                 unless (defined ($ctype_name)) {
 922                         error($location, "Unable to determine origin of type `" . mapTypeName($ctype) . "'");
 923                         $self->pidl("PyErr_SetString(PyExc_TypeError, \"Can not convert C Type " . mapTypeName($ctype) . " from Python\");");
 924                         return;
 925                 }
 926                 $self->pidl("PY_CHECK_TYPE($ctype_name, $cvar, $fail);");
 927                 $self->pidl("if (talloc_reference($mem_ctx, pytalloc_get_mem_ctx($cvar)) == NULL) {");
 928                 $self->indent;
 929                 $self->pidl("PyErr_NoMemory();");
 930                 $self->pidl("$fail");
 931                 $self->deindent;
 932                 $self->pidl("}");
 933                 $self->assign($target, "(".mapTypeName($ctype)." *)pytalloc_get_ptr($cvar)");
 934                 return;
 935         }
 936
 937         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "DATA_BLOB") {
 938                 $self->pidl("$target = data_blob_talloc($mem_ctx, PyString_AS_STRING($cvar), PyString_GET_SIZE($cvar));");
 939                 return;
 940         }
 941
 942         if ($actual_ctype->{TYPE} eq "SCALAR" and
 943                 ($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")) {
 944                 $self->pidl("$target = talloc_strdup($mem_ctx, PyString_AS_STRING($cvar));");
 945                 return;
 946         }
 947
 948         if ($actual_ctype->{TYPE} eq "SCALAR" and ($actual_ctype->{NAME} eq "dns_string" or $actual_ctype->{NAME} eq "dns_name")) {
 949                 $self->pidl("$target = talloc_strdup($mem_ctx, PyString_AS_STRING($cvar));");
 950                 return;
 951         }
 952
 953         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "ipv4address") {
 954                 $self->pidl("$target = PyString_AS_STRING($cvar);");
 955                 return;
 956         }
 957
 958         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "ipv6address") {
 959                 $self->pidl("$target = PyString_AsString($cvar);");
 960                 return;
 961         }
 962
 963         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "dnsp_name") {
 964                 $self->pidl("$target = PyString_AS_STRING($cvar);");
 965                 return;
 966         }
 967
 968         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "dnsp_string") {
 969                 $self->pidl("$target = PyString_AS_STRING($cvar);");
 970                 return;
 971         }
 972
 973         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "NTSTATUS") {
 974                 $self->pidl("$target = NT_STATUS(PyInt_AsLong($cvar));");
 975                 return;
 976         }
 977
 978         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "WERROR") {
 979                 $self->pidl("$target = W_ERROR(PyInt_AsLong($cvar));");
 980                 return;
 981         }
 982
 983         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "string_array") {
 984                 $self->pidl("$target = PyCObject_AsVoidPtr($cvar);");
 985                 return;
 986         }
 987
 988         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "pointer") {
 989                 $self->assign($target, "PyCObject_AsVoidPtr($cvar)");
 990                 return;
 991         }
 992
 993         fatal($location, "unknown type `$actual_ctype->{TYPE}' for ".mapTypeName($ctype) . ": $cvar");
 994
 995 }
 996
 997 sub ConvertObjectFromPythonLevel($$$$$$$$)
 998 {
 999         my ($self, $env, $mem_ctx, $py_var, $e, $l, $var_name, $fail) = @_;
1000         my $nl = GetNextLevel($e, $l);
1001         if ($nl and $nl->{TYPE} eq "SUBCONTEXT") {
1002                 $nl = GetNextLevel($e, $nl);
1003         }
1004         my $pl = GetPrevLevel($e, $l);
1005         if ($pl and $pl->{TYPE} eq "SUBCONTEXT") {
1006                 $pl = GetPrevLevel($e, $pl);
1007         }
1008
1009         if ($l->{TYPE} eq "POINTER") {
1010                 if ($l->{POINTER_TYPE} ne "ref") {
1011                         $self->pidl("if ($py_var == Py_None) {");
1012                         $self->indent;
1013                         $self->pidl("$var_name = NULL;");
1014                         $self->deindent;
1015                         $self->pidl("} else {");
1016                         $self->indent;
1017                 }
1018                 # if we want to handle more than one level of pointer in python interfaces
1019                 # then this is where we would need to allocate it
1020                 if ($l->{POINTER_TYPE} eq "ref") {
1021                         $self->pidl("$var_name = talloc_ptrtype($mem_ctx, $var_name);");
1022                 } elsif ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::is_scalar($nl->{DATA_TYPE})
1023                          and not Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE})) {
1024                         $self->pidl("$var_name = talloc_ptrtype($mem_ctx, $var_name);");
1025                 } else {
1026                         $self->pidl("$var_name = NULL;");
1027                 }
1028                 unless ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE})) {
1029                         $var_name = get_value_of($var_name);
1030                 }
1031                 $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $py_var, $e, $nl, $var_name, $fail);
1032                 if ($l->{POINTER_TYPE} ne "ref") {
1033                         $self->deindent;
1034                         $self->pidl("}");
1035                 }
1036         } elsif ($l->{TYPE} eq "ARRAY") {
1037                 if ($pl && $pl->{TYPE} eq "POINTER") {
1038                         $var_name = get_pointer_to($var_name);
1039                 }
1040
1041                 if (is_charset_array($e, $l)) {
1042                         $self->pidl("if (PyUnicode_Check($py_var)) {");
1043                         $self->indent;
1044                         # FIXME: Use Unix charset setting rather than utf-8
1045                         $self->pidl($var_name . " = PyString_AS_STRING(PyUnicode_AsEncodedString($py_var, \"utf-8\", \"ignore\"));");
1046                         $self->deindent;
1047                         $self->pidl("} else if (PyString_Check($py_var)) {");
1048                         $self->indent;
1049                         $self->pidl($var_name . " = PyString_AS_STRING($py_var);");
1050                         $self->deindent;
1051                         $self->pidl("} else {");
1052                         $self->indent;
1053                         $self->pidl("PyErr_Format(PyExc_TypeError, \"Expected string or unicode object, got %s\", Py_TYPE($py_var)->tp_name);");
1054                         $self->pidl("$fail");
1055                         $self->deindent;
1056                         $self->pidl("}");
1057                 } else {
1058                         my $counter = "$e->{NAME}_cntr_$l->{LEVEL_INDEX}";
1059                         $self->pidl("PY_CHECK_TYPE(&PyList_Type, $py_var, $fail);");
1060                         $self->pidl("{");
1061                         $self->indent;
1062                         $self->pidl("int $counter;");
1063                         if (ArrayDynamicallyAllocated($e, $l)) {
1064                                 $self->pidl("$var_name = talloc_array_ptrtype($mem_ctx, $var_name, PyList_GET_SIZE($py_var));");
1065                                 $self->pidl("if (!$var_name) { $fail; }");
1066                                 $self->pidl("talloc_set_name_const($var_name, \"ARRAY: $var_name\");");
1067                         }
1068                         $self->pidl("for ($counter = 0; $counter < PyList_GET_SIZE($py_var); $counter++) {");
1069                         $self->indent;
1070                         $self->ConvertObjectFromPythonLevel($env, $var_name, "PyList_GET_ITEM($py_var, $counter)", $e, $nl, $var_name."[$counter]", $fail);
1071                         $self->deindent;
1072                         $self->pidl("}");
1073                         $self->deindent;
1074                         $self->pidl("}");
1075                 }
1076         } elsif ($l->{TYPE} eq "DATA") {
1077                 if (not Parse::Pidl::Typelist::is_scalar($l->{DATA_TYPE})) {
1078                         $var_name = get_pointer_to($var_name);
1079                 }
1080                 $self->ConvertObjectFromPythonData($mem_ctx, $py_var, $l->{DATA_TYPE}, $var_name, $fail, $e->{ORIGINAL});
1081         } elsif ($l->{TYPE} eq "SWITCH") {
1082                 $var_name = get_pointer_to($var_name);
1083                 my $switch = ParseExpr($l->{SWITCH_IS}, $env, $e);
1084                 my $switch_ptr = "$e->{NAME}_switch_$l->{LEVEL_INDEX}";
1085                 $self->pidl("{");
1086                 $self->indent;
1087                 my $union_type = mapTypeName($nl->{DATA_TYPE});
1088                 $self->pidl("$union_type *$switch_ptr;");
1089                 $self->pidl("$switch_ptr = py_export_" . $nl->{DATA_TYPE} . "($mem_ctx, $switch, $py_var);");
1090                 $self->fail_on_null($switch_ptr, $fail);
1091                 $self->assign($var_name, "$switch_ptr");
1092                 $self->deindent;
1093                 $self->pidl("}");
1094         } elsif ($l->{TYPE} eq "SUBCONTEXT") {
1095                 $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $py_var, $e, $nl, $var_name, $fail);
1096         } else {
1097                 fatal($e->{ORIGINAL}, "unknown level type $l->{TYPE}");
1098         }
1099 }
1100
1101 sub ConvertObjectFromPython($$$$$$$)
1102 {
1103         my ($self, $env, $mem_ctx, $ctype, $cvar, $target, $fail) = @_;
1104
1105         $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $cvar, $ctype, $ctype->{LEVELS}[0], $target, $fail);
1106 }
1107
1108 sub ConvertScalarToPython($$$)
1109 {
1110         my ($self, $ctypename, $cvar) = @_;
1111
1112         die("expected string for $cvar, not $ctypename") if (ref($ctypename) eq "HASH");
1113
1114         $ctypename = expandAlias($ctypename);
1115
1116         if ($ctypename =~ /^(u?int64|hyper|dlong|udlong|udlongr|NTTIME_hyper|NTTIME|NTTIME_1sec)$/) {
1117                 return "PyLong_FromLongLong($cvar)";
1118         }
1119
1120         if ($ctypename =~ /^(char|u?int[0-9]*|time_t|uid_t|gid_t)$/) {
1121                 return "PyInt_FromLong($cvar)";
1122         }
1123
1124         if ($ctypename eq "DATA_BLOB") {
1125                 return "PyString_FromStringAndSize((char *)($cvar).data, ($cvar).length)";
1126         }
1127
1128         if ($ctypename eq "NTSTATUS") {
1129                 return "PyErr_FromNTSTATUS($cvar)";
1130         }
1131
1132         if ($ctypename eq "WERROR") {
1133                 return "PyErr_FromWERROR($cvar)";
1134         }
1135
1136         if (($ctypename eq "string" or $ctypename eq "nbt_string" or $ctypename eq "nbt_name" or $ctypename eq "wrepl_nbt_name")) {
1137                 return "PyString_FromStringOrNULL($cvar)";
1138         }
1139
1140         if (($ctypename eq "dns_string" or $ctypename eq "dns_name")) {
1141                 return "PyString_FromStringOrNULL($cvar)";
1142         }
1143
1144         # Not yet supported
1145         if ($ctypename eq "string_array") { return "pytalloc_CObject_FromTallocPtr($cvar)"; }
1146         if ($ctypename eq "ipv4address") { return "PyString_FromStringOrNULL($cvar)"; }
1147         if ($ctypename eq "ipv6address") { return "PyString_FromStringOrNULL($cvar)"; }
1148         if ($ctypename eq "dnsp_name") { return "PyString_FromStringOrNULL($cvar)"; }
1149         if ($ctypename eq "dnsp_string") { return "PyString_FromStringOrNULL($cvar)"; }
1150         if ($ctypename eq "pointer") {
1151                 return "pytalloc_CObject_FromTallocPtr($cvar)";
1152         }
1153
1154         die("Unknown scalar type $ctypename");
1155 }
1156
1157 sub ConvertObjectToPythonData($$$$$;$)
1158 {
1159         my ($self, $mem_ctx, $ctype, $cvar, $location) = @_;
1160
1161         die("undef type for $cvar") unless(defined($ctype));
1162
1163         $ctype = resolveType($ctype);
1164
1165         my $actual_ctype = $ctype;
1166         if ($actual_ctype->{TYPE} eq "TYPEDEF") {
1167                 $actual_ctype = $actual_ctype->{DATA};
1168         }
1169
1170         if ($actual_ctype->{TYPE} eq "ENUM") {
1171                 return $self->ConvertScalarToPython(Parse::Pidl::Typelist::enum_type_fn($actual_ctype), $cvar);
1172         } elsif ($actual_ctype->{TYPE} eq "BITMAP") {
1173                 return $self->ConvertScalarToPython(Parse::Pidl::Typelist::bitmap_type_fn($actual_ctype), $cvar);
1174         } elsif ($actual_ctype->{TYPE} eq "SCALAR") {
1175                 return $self->ConvertScalarToPython($actual_ctype->{NAME}, $cvar);
1176         } elsif ($actual_ctype->{TYPE} eq "UNION") {
1177                 fatal($ctype, "union without discriminant: " . mapTypeName($ctype) . ": $cvar");
1178         } elsif ($actual_ctype->{TYPE} eq "STRUCT" or $actual_ctype->{TYPE} eq "INTERFACE") {
1179                 my $ctype_name = $self->use_type_variable($ctype);
1180                 unless (defined($ctype_name)) {
1181                         error($location, "Unable to determine origin of type `" . mapTypeName($ctype) . "'");
1182                         return "NULL"; # FIXME!
1183                 }
1184                 return "pytalloc_reference_ex($ctype_name, $mem_ctx, $cvar)";
1185         }
1186
1187         fatal($location, "unknown type $actual_ctype->{TYPE} for ".mapTypeName($ctype) . ": $cvar");
1188 }
1189
1190 sub fail_on_null($$$)
1191 {
1192         my ($self, $var, $fail) = @_;
1193         $self->pidl("if ($var == NULL) {");
1194         $self->indent;
1195         $self->pidl($fail);
1196         $self->deindent;
1197         $self->pidl("}");
1198 }
1199
1200 sub ConvertObjectToPythonLevel($$$$$$)
1201 {
1202         my ($self, $mem_ctx, $env, $e, $l, $var_name, $py_var, $fail) = @_;
1203         my $nl = GetNextLevel($e, $l);
1204         if ($nl and $nl->{TYPE} eq "SUBCONTEXT") {
1205                 $nl = GetNextLevel($e, $nl);
1206         }
1207         my $pl = GetPrevLevel($e, $l);
1208         if ($pl and $pl->{TYPE} eq "SUBCONTEXT") {
1209                 $pl = GetPrevLevel($e, $pl);
1210         }
1211
1212         if ($l->{TYPE} eq "POINTER") {
1213                 if ($l->{POINTER_TYPE} ne "ref") {
1214                         $self->pidl("if ($var_name == NULL) {");
1215                         $self->indent;
1216                         $self->pidl("$py_var = Py_None;");
1217                         $self->pidl("Py_INCREF($py_var);");
1218                         $self->deindent;
1219                         $self->pidl("} else {");
1220                         $self->indent;
1221                 }
1222                 my $var_name2 = $var_name;
1223                 unless ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE})) {
1224                         $var_name2 = get_value_of($var_name);
1225                 }
1226                 $self->ConvertObjectToPythonLevel($var_name, $env, $e, $nl, $var_name2, $py_var, $fail);
1227                 if ($l->{POINTER_TYPE} ne "ref") {
1228                         $self->deindent;
1229                         $self->pidl("}");
1230                 }
1231         } elsif ($l->{TYPE} eq "ARRAY") {
1232                 if ($pl && $pl->{TYPE} eq "POINTER") {
1233                         $var_name = get_pointer_to($var_name);
1234                 }
1235
1236                 if (is_charset_array($e, $l)) {
1237                         # FIXME: Use Unix charset setting rather than utf-8
1238                         $self->pidl("if ($var_name == NULL) {");
1239                         $self->indent;
1240                         $self->pidl("$py_var = Py_None;");
1241                         $self->pidl("Py_INCREF($py_var);");
1242                         $self->deindent;
1243                         $self->pidl("} else {");
1244                         $self->indent;
1245                         $self->pidl("$py_var = PyUnicode_Decode($var_name, strlen($var_name), \"utf-8\", \"ignore\");");
1246                         $self->deindent;
1247                         $self->pidl("}");
1248                 } else {
1249                         die("No SIZE_IS for array $var_name") unless (defined($l->{SIZE_IS}));
1250                         my $length = $l->{SIZE_IS};
1251                         if (defined($l->{LENGTH_IS})) {
1252                                 $length = $l->{LENGTH_IS};
1253                         }
1254
1255                         $length = ParseExpr($length, $env, $e);
1256                         $self->pidl("$py_var = PyList_New($length);");
1257                         $self->fail_on_null($py_var, $fail);
1258                         $self->pidl("{");
1259                         $self->indent;
1260                         my $counter = "$e->{NAME}_cntr_$l->{LEVEL_INDEX}";
1261                         $self->pidl("int $counter;");
1262                         $self->pidl("for ($counter = 0; $counter < $length; $counter++) {");
1263                         $self->indent;
1264                         my $member_var = "py_$e->{NAME}_$l->{LEVEL_INDEX}";
1265                         $self->pidl("PyObject *$member_var;");
1266                         $self->ConvertObjectToPythonLevel($var_name, $env, $e, $nl, $var_name."[$counter]", $member_var, $fail);
1267                         $self->pidl("PyList_SetItem($py_var, $counter, $member_var);");
1268                         $self->deindent;
1269                         $self->pidl("}");
1270                         $self->deindent;
1271                         $self->pidl("}");
1272                 }
1273         } elsif ($l->{TYPE} eq "SWITCH") {
1274                 $var_name = get_pointer_to($var_name);
1275                 my $switch = ParseExpr($l->{SWITCH_IS}, $env, $e);
1276                 $self->pidl("$py_var = py_import_" . $nl->{DATA_TYPE} . "($mem_ctx, $switch, $var_name);");
1277                 $self->fail_on_null($py_var, $fail);
1278
1279         } elsif ($l->{TYPE} eq "DATA") {
1280                 if (not Parse::Pidl::Typelist::is_scalar($l->{DATA_TYPE})) {
1281                         $var_name = get_pointer_to($var_name);
1282                 }
1283                 my $conv = $self->ConvertObjectToPythonData($mem_ctx, $l->{DATA_TYPE}, $var_name, $e->{ORIGINAL});
1284                 $self->pidl("$py_var = $conv;");
1285         } elsif ($l->{TYPE} eq "SUBCONTEXT") {
1286                 $self->ConvertObjectToPythonLevel($mem_ctx, $env, $e, $nl, $var_name, $py_var, $fail);
1287         } else {
1288                 fatal($e->{ORIGINAL}, "Unknown level type $l->{TYPE} $var_name");
1289         }
1290 }
1291
1292 sub ConvertObjectToPython($$$$$$)
1293 {
1294         my ($self, $mem_ctx, $env, $ctype, $cvar, $py_var, $fail) = @_;
1295
1296         $self->ConvertObjectToPythonLevel($mem_ctx, $env, $ctype, $ctype->{LEVELS}[0], $cvar, $py_var, $fail);
1297 }
1298
1299 sub Parse($$$$$)
1300 {
1301     my($self,$basename,$ndr,$ndr_hdr,$hdr) = @_;
1302
1303         $self->{BASENAME} = $basename;
1304
1305     $self->pidl_hdr("
1306 /* Python wrapper functions auto-generated by pidl */
1307 #include <Python.h>
1308 #include \"includes.h\"
1309 #include <pytalloc.h>
1310 #include \"librpc/rpc/pyrpc.h\"
1311 #include \"librpc/rpc/pyrpc_util.h\"
1312 #include \"$hdr\"
1313 #include \"$ndr_hdr\"
1314
1315 ");
1316
1317         foreach my $x (@$ndr) {
1318                 ($x->{TYPE} eq "IMPORT") && $self->Import(@{$x->{PATHS}});
1319             ($x->{TYPE} eq "INTERFACE") && $self->Interface($x, $basename);
1320         }
1321
1322         $self->pidl("static PyMethodDef $basename\_methods[] = {");
1323         $self->indent;
1324         foreach (@{$self->{module_methods}}) {
1325                 my ($fn_name, $pyfn_name, $flags, $doc) = @$_;
1326                 $self->pidl("{ \"$fn_name\", (PyCFunction)$pyfn_name, $flags, $doc },");
1327         }
1328
1329         $self->pidl("{ NULL, NULL, 0, NULL }");
1330         $self->deindent;
1331         $self->pidl("};");
1332
1333         $self->pidl("");
1334
1335         $self->pidl_hdr("void init$basename(void);");
1336         $self->pidl("void init$basename(void)");
1337         $self->pidl("{");
1338         $self->indent;
1339         $self->pidl("PyObject *m;");
1340         foreach (keys %{$self->{module_imports}}) {
1341                 $self->pidl("PyObject *$_;");
1342         }
1343         $self->pidl("");
1344
1345         foreach (keys %{$self->{module_imports}}) {
1346                 my $var_name = $_;
1347                 my $module_path = $self->{module_imports}->{$var_name};
1348                 $self->pidl("$var_name = PyImport_ImportModule(\"$module_path\");");
1349                 $self->pidl("if ($var_name == NULL)");
1350                 $self->pidl("\treturn;");
1351                 $self->pidl("");
1352         }
1353
1354         foreach (keys %{$self->{type_imports}}) {
1355                 my $type_var = "$_\_Type";
1356                 my $module_path = $self->{type_imports}->{$_};
1357                 $self->pidl_hdr("static PyTypeObject *$type_var;\n");
1358                 my $pretty_name = PrettifyTypeName($_, $module_path);
1359                 my $module_var = "dep_$module_path";
1360                 $module_var =~ s/\./_/g;
1361                 $self->pidl("$type_var = (PyTypeObject *)PyObject_GetAttrString($module_var, \"$pretty_name\");");
1362                 $self->pidl("if ($type_var == NULL)");
1363                 $self->pidl("\treturn;");
1364                 $self->pidl("");
1365         }
1366
1367         $self->pidl($_) foreach (@{$self->{prereadycode}});
1368
1369         foreach (@{$self->{ready_types}}) {
1370                 $self->pidl("if (PyType_Ready($_) < 0)");
1371                 $self->pidl("\treturn;");
1372         }
1373
1374         $self->pidl($_) foreach (@{$self->{postreadycode}});
1375
1376         foreach (@{$self->{patch_type_calls}}) {
1377                 my ($typename, $cvar) = @$_;
1378                 $self->pidl("#ifdef PY_".uc($typename)."_PATCH");
1379                 $self->pidl("PY_".uc($typename)."_PATCH($cvar);");
1380                 $self->pidl("#endif");
1381         }
1382
1383         $self->pidl("");
1384
1385         $self->pidl("m = Py_InitModule3(\"$basename\", $basename\_methods, \"$basename DCE/RPC\");");
1386         $self->pidl("if (m == NULL)");
1387         $self->pidl("\treturn;");
1388         $self->pidl("");
1389         foreach my $name (keys %{$self->{constants}}) {
1390                 my $py_obj;
1391                 my ($ctype, $cvar) = @{$self->{constants}->{$name}};
1392                 if ($cvar =~ /^[0-9]+$/ or $cvar =~ /^0x[0-9a-fA-F]+$/) {
1393                         $py_obj = "PyInt_FromLong($cvar)";
1394                 } elsif ($cvar =~ /^".*"$/) {
1395                         $py_obj = "PyString_FromString($cvar)";
1396                 } else {
1397                         $py_obj = $self->ConvertObjectToPythonData("NULL", expandAlias($ctype), $cvar, undef);
1398                 }
1399
1400                 $self->pidl("PyModule_AddObject(m, \"$name\", $py_obj);");
1401         }
1402
1403         foreach (@{$self->{module_objects}}) {
1404                 my ($object_name, $c_name) = @$_;
1405                 $self->pidl("Py_INCREF($c_name);");
1406                 $self->pidl("PyModule_AddObject(m, \"$object_name\", $c_name);");
1407         }
1408
1409         $self->pidl("#ifdef PY_MOD_".uc($basename)."_PATCH");
1410         $self->pidl("PY_MOD_".uc($basename)."_PATCH(m);");
1411         $self->pidl("#endif");
1412
1413         $self->pidl("");
1414         $self->deindent;
1415         $self->pidl("}");
1416     return ($self->{res_hdr} . $self->{res});
1417 }
1418
1419 1;