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, PyObject *kwargs)");
 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("const char * const kwnames[] = { \"data_blob\", \"allow_remaining\", NULL };");
 282                 $self->pidl("PyObject *allow_remaining_obj = NULL;");
 283                 $self->pidl("bool allow_remaining = false;");
 284                 $self->pidl("");
 285                 $self->pidl("if (!PyArg_ParseTupleAndKeywords(args, kwargs, \"s#|O:__ndr_unpack__\",");
 286                 $self->indent;
 287                 $self->pidl("discard_const_p(char *, kwnames),");
 288                 $self->pidl("&blob.data, &blob_length,");
 289                 $self->pidl("&allow_remaining_obj)) {");
 290                 $self->deindent;
 291                 $self->indent;
 292                 $self->pidl("return NULL;");
 293                 $self->deindent;
 294                 $self->pidl("}");
 295                 $self->pidl("blob.length = blob_length;");
 296                 $self->pidl("");
 297                 $self->pidl("if (allow_remaining_obj && PyObject_IsTrue(allow_remaining_obj)) {");
 298                 $self->indent;
 299                 $self->pidl("allow_remaining = true;");
 300                 $self->deindent;
 301                 $self->pidl("}");
 302                 $self->pidl("");
 303                 $self->pidl("if (allow_remaining) {");
 304                 $self->indent;
 305                 $self->pidl("err = ndr_pull_struct_blob(&blob, pytalloc_get_mem_ctx(py_obj), object, (ndr_pull_flags_fn_t)ndr_pull_$name);");
 306                 $self->deindent;
 307                 $self->pidl("} else {");
 308                 $self->indent;
 309                 $self->pidl("err = ndr_pull_struct_blob_all(&blob, pytalloc_get_mem_ctx(py_obj), object, (ndr_pull_flags_fn_t)ndr_pull_$name);");
 310                 $self->deindent;
 311                 $self->pidl("}");
 312                 $self->pidl("if (err != NDR_ERR_SUCCESS) {");
 313                 $self->indent;
 314                 $self->pidl("PyErr_SetNdrError(err);");
 315                 $self->pidl("return NULL;");
 316                 $self->deindent;
 317                 $self->pidl("}");
 318                 $self->pidl("");
 319                 $self->pidl("Py_RETURN_NONE;");
 320                 $self->deindent;
 321                 $self->pidl("}");
 322                 $self->pidl("");
 323
 324                 $self->pidl("static PyObject *py_$name\_ndr_print(PyObject *py_obj)");
 325                 $self->pidl("{");
 326                 $self->indent;
 327                 $self->pidl("$cname *object = ($cname *)pytalloc_get_ptr(py_obj);");
 328                 $self->pidl("PyObject *ret;");
 329                 $self->pidl("char *retstr;");
 330                 $self->pidl("");
 331                 $self->pidl("retstr = ndr_print_struct_string(pytalloc_get_mem_ctx(py_obj), (ndr_print_fn_t)ndr_print_$name, \"$name\", object);");
 332                 $self->pidl("ret = PyString_FromString(retstr);");
 333                 $self->pidl("talloc_free(retstr);");
 334                 $self->pidl("");
 335                 $self->pidl("return ret;");
 336                 $self->deindent;
 337                 $self->pidl("}");
 338                 $self->pidl("");
 339
 340                 $py_methods = "py_$name\_methods";
 341                 $self->pidl("static PyMethodDef $py_methods\[] = {");
 342                 $self->indent;
 343                 $self->pidl("{ \"__ndr_pack__\", (PyCFunction)py_$name\_ndr_pack, METH_NOARGS, \"S.ndr_pack(object) -> blob\\nNDR pack\" },");
 344                 $self->pidl("{ \"__ndr_unpack__\", (PyCFunction)py_$name\_ndr_unpack, METH_VARARGS|METH_KEYWORDS, \"S.ndr_unpack(class, blob, allow_remaining=False) -> None\\nNDR unpack\" },");
 345                 $self->pidl("{ \"__ndr_print__\", (PyCFunction)py_$name\_ndr_print, METH_VARARGS, \"S.ndr_print(object) -> None\\nNDR print\" },");
 346                 $self->pidl("{ NULL, NULL, 0, NULL }");
 347                 $self->deindent;
 348                 $self->pidl("};");
 349                 $self->pidl("");
 350         }
 351
 352         $self->pidl_hdr("staticforward PyTypeObject $name\_Type;\n");
 353         $self->pidl("");
 354         my $docstring = $self->DocString($d, $name);
 355         my $typeobject = "$name\_Type";
 356         $self->pidl("static PyTypeObject $typeobject = {");
 357         $self->indent;
 358         $self->pidl("PyObject_HEAD_INIT(NULL) 0,");
 359         $self->pidl(".tp_name = \"$modulename.$prettyname\",");
 360         $self->pidl(".tp_getset = $getsetters,");
 361         if ($docstring) {
 362                 $self->pidl(".tp_doc = $docstring,");
 363         }
 364         $self->pidl(".tp_methods = $py_methods,");
 365         $self->pidl(".tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,");
 366         $self->pidl(".tp_basicsize = sizeof(pytalloc_Object),");
 367         $self->pidl(".tp_new = py_$name\_new,");
 368         $self->deindent;
 369         $self->pidl("};");
 370
 371         $self->pidl("");
 372
 373         my $talloc_typename = $self->import_type_variable("talloc", "Object");
 374         $self->register_module_prereadycode(["$name\_Type.tp_base = $talloc_typename;", ""]);
 375
 376         return "&$typeobject";
 377 }
 378
 379 sub get_metadata_var($)
 380 {
 381         my ($e) = @_;
 382         sub get_var($) { my $x = shift; $x =~ s/\*//g; return $x; }
 383
 384          if (has_property($e, "length_is")) {
 385                 return get_var($e->{PROPERTIES}->{length_is});
 386          } elsif (has_property($e, "size_is")) {
 387                 return get_var($e->{PROPERTIES}->{size_is});
 388          }
 389
 390          return undef;
 391 }
 392
 393 sub find_metadata_args($)
 394 {
 395         my ($fn) = @_;
 396         my $metadata_args = { in => {}, out => {} };
 397
 398         # Determine arguments that are metadata for other arguments (size_is/length_is)
 399         foreach my $e (@{$fn->{ELEMENTS}}) {
 400                 foreach my $dir (@{$e->{DIRECTION}}) {
 401                          my $main = get_metadata_var($e);
 402                          if ($main) {
 403                                  $metadata_args->{$dir}->{$main} = $e->{NAME};
 404                          }
 405                  }
 406         }
 407
 408         return $metadata_args;
 409 }
 410
 411 sub PythonFunctionUnpackOut($$$)
 412 {
 413         my ($self, $fn, $fnname) = @_;
 414
 415         my $outfnname = "unpack_$fnname\_args_out";
 416         my $signature = "";
 417
 418         my $metadata_args = find_metadata_args($fn);
 419
 420         my $env = GenerateFunctionOutEnv($fn, "r->");
 421         my $result_size = 0;
 422
 423         $self->pidl("static PyObject *$outfnname(struct $fn->{NAME} *r)");
 424         $self->pidl("{");
 425         $self->indent;
 426         $self->pidl("PyObject *result;");
 427         foreach my $e (@{$fn->{ELEMENTS}}) {
 428                 next unless (grep(/out/,@{$e->{DIRECTION}}));
 429                 next if (($metadata_args->{in}->{$e->{NAME}} and grep(/in/, @{$e->{DIRECTION}})) or
 430                          ($metadata_args->{out}->{$e->{NAME}}) and grep(/out/, @{$e->{DIRECTION}}));
 431                 $self->pidl("PyObject *py_$e->{NAME};");
 432                 $result_size++;
 433         }
 434
 435         if ($fn->{RETURN_TYPE}) {
 436                 $result_size++ unless ($fn->{RETURN_TYPE} eq "WERROR" or $fn->{RETURN_TYPE} eq "NTSTATUS");
 437         }
 438
 439         my $i = 0;
 440
 441         if ($result_size > 1) {
 442                 $self->pidl("result = PyTuple_New($result_size);");
 443                 $signature .= "(";
 444         } elsif ($result_size == 0) {
 445                 $self->pidl("result = Py_None;");
 446                 $self->pidl("Py_INCREF(result);");
 447                 $signature .= "None";
 448         }
 449
 450         foreach my $e (@{$fn->{ELEMENTS}}) {
 451                 next if ($metadata_args->{out}->{$e->{NAME}});
 452                 my $py_name = "py_$e->{NAME}";
 453                 if (grep(/out/,@{$e->{DIRECTION}})) {
 454                         $self->ConvertObjectToPython("r", $env, $e, "r->out.$e->{NAME}", $py_name, "return NULL;");
 455                         if ($result_size > 1) {
 456                                 $self->pidl("PyTuple_SetItem(result, $i, $py_name);");
 457                                 $i++;
 458                                 $signature .= "$e->{NAME}, ";
 459                         } else {
 460                                 $self->pidl("result = $py_name;");
 461                                 $signature .= $e->{NAME};
 462                         }
 463                 }
 464         }
 465
 466         if (defined($fn->{RETURN_TYPE}) and $fn->{RETURN_TYPE} eq "NTSTATUS") {
 467                 $self->handle_ntstatus("r->out.result", "NULL", undef);
 468         } elsif (defined($fn->{RETURN_TYPE}) and $fn->{RETURN_TYPE} eq "WERROR") {
 469                 $self->handle_werror("r->out.result", "NULL", undef);
 470         } elsif (defined($fn->{RETURN_TYPE})) {
 471                 my $conv = $self->ConvertObjectToPythonData("r", $fn->{RETURN_TYPE}, "r->out.result", $fn);
 472                 if ($result_size > 1) {
 473                         $self->pidl("PyTuple_SetItem(result, $i, $conv);");
 474                 } else {
 475                         $self->pidl("result = $conv;");
 476                 }
 477                 $signature .= "result";
 478         }
 479
 480         if (substr($signature, -2) eq ", ") {
 481                 $signature = substr($signature, 0, -2);
 482         }
 483         if ($result_size > 1) {
 484                 $signature .= ")";
 485         }
 486
 487         $self->pidl("return result;");
 488         $self->deindent;
 489         $self->pidl("}");
 490         $self->pidl("");
 491
 492         return ($outfnname, $signature);
 493 }
 494
 495 sub PythonFunctionPackIn($$$)
 496 {
 497         my ($self, $fn, $fnname) = @_;
 498         my $metadata_args = find_metadata_args($fn);
 499
 500         my $infnname = "pack_$fnname\_args_in";
 501
 502         $self->pidl("static bool $infnname(PyObject *args, PyObject *kwargs, struct $fn->{NAME} *r)");
 503         $self->pidl("{");
 504         $self->indent;
 505         my $args_format = "";
 506         my $args_string = "";
 507         my $args_names = "";
 508         my $signature = "";
 509
 510         foreach my $e (@{$fn->{ELEMENTS}}) {
 511                 next unless (grep(/in/,@{$e->{DIRECTION}}));
 512                 next if (($metadata_args->{in}->{$e->{NAME}} and grep(/in/, @{$e->{DIRECTION}})) or
 513                                  ($metadata_args->{out}->{$e->{NAME}}) and grep(/out/, @{$e->{DIRECTION}}));
 514                 $self->pidl("PyObject *py_$e->{NAME};");
 515                 $args_format .= "O";
 516                 $args_string .= ", &py_$e->{NAME}";
 517                 $args_names .= "\"$e->{NAME}\", ";
 518                 $signature .= "$e->{NAME}, ";
 519         }
 520         if (substr($signature, -2) eq ", ") {
 521                 $signature = substr($signature, 0, -2);
 522         }
 523         $self->pidl("const char *kwnames[] = {");
 524         $self->indent;
 525         $self->pidl($args_names . "NULL");
 526         $self->deindent;
 527         $self->pidl("};");
 528
 529         $self->pidl("");
 530         $self->pidl("if (!PyArg_ParseTupleAndKeywords(args, kwargs, \"$args_format:$fn->{NAME}\", discard_const_p(char *, kwnames)$args_string)) {");
 531         $self->indent;
 532         $self->pidl("return false;");
 533         $self->deindent;
 534         $self->pidl("}");
 535         $self->pidl("");
 536
 537         my $env = GenerateFunctionInEnv($fn, "r->");
 538
 539         my $fail = "return false;";
 540         foreach my $e (@{$fn->{ELEMENTS}}) {
 541                 next unless (grep(/in/,@{$e->{DIRECTION}}));
 542                 if ($metadata_args->{in}->{$e->{NAME}}) {
 543                         my $py_var = "py_".$metadata_args->{in}->{$e->{NAME}};
 544                         $self->pidl("PY_CHECK_TYPE(&PyList_Type, $py_var, $fail);");
 545                         my $val = "PyList_GET_SIZE($py_var)";
 546                         if ($e->{LEVELS}[0]->{TYPE} eq "POINTER") {
 547                                 $self->pidl("r->in.$e->{NAME} = talloc_ptrtype(r, r->in.$e->{NAME});");
 548                                 $self->pidl("*r->in.$e->{NAME} = $val;");
 549                         } else {
 550                                 $self->pidl("r->in.$e->{NAME} = $val;");
 551                         }
 552                 } else {
 553                         $self->ConvertObjectFromPython($env, "r", $e, "py_$e->{NAME}", "r->in.$e->{NAME}", $fail);
 554                 }
 555         }
 556         $self->pidl("return true;");
 557         $self->deindent;
 558         $self->pidl("}");
 559         $self->pidl("");
 560         return ($infnname, $signature);
 561 }
 562
 563 sub PythonFunction($$$)
 564 {
 565         my ($self, $fn, $iface, $prettyname) = @_;
 566
 567         my $fnname = "py_$fn->{NAME}";
 568         my $docstring = $self->DocString($fn, $fn->{NAME});
 569
 570         my ($infn, $insignature) = $self->PythonFunctionPackIn($fn, $fnname);
 571         my ($outfn, $outsignature) = $self->PythonFunctionUnpackOut($fn, $fnname);
 572         my $signature = "S.$prettyname($insignature) -> $outsignature";
 573         if ($docstring) {
 574                 $docstring = "\"$signature\\n\\n\"$docstring";
 575         } else {
 576                 $docstring = "\"$signature\"";
 577         }
 578
 579         return ($infn, $outfn, $docstring);
 580 }
 581
 582 sub handle_werror($$$$)
 583 {
 584         my ($self, $var, $retval, $mem_ctx) = @_;
 585
 586         $self->pidl("if (!W_ERROR_IS_OK($var)) {");
 587         $self->indent;
 588         $self->pidl("PyErr_SetWERROR($var);");
 589         $self->pidl("talloc_free($mem_ctx);") if ($mem_ctx);
 590         $self->pidl("return $retval;");
 591         $self->deindent;
 592         $self->pidl("}");
 593         $self->pidl("");
 594 }
 595
 596 sub handle_ntstatus($$$$)
 597 {
 598         my ($self, $var, $retval, $mem_ctx) = @_;
 599
 600         $self->pidl("if (NT_STATUS_IS_ERR($var)) {");
 601         $self->indent;
 602         $self->pidl("PyErr_SetNTSTATUS($var);");
 603         $self->pidl("talloc_free($mem_ctx);") if ($mem_ctx);
 604         $self->pidl("return $retval;");
 605         $self->deindent;
 606         $self->pidl("}");
 607         $self->pidl("");
 608 }
 609
 610 sub PythonType($$$$)
 611 {
 612         my ($self, $modulename, $d, $interface, $basename) = @_;
 613
 614         my $actual_ctype = $d;
 615         if ($actual_ctype->{TYPE} eq "TYPEDEF") {
 616                 $actual_ctype = $actual_ctype->{DATA};
 617         }
 618
 619         if ($actual_ctype->{TYPE} eq "STRUCT") {
 620                 my $typeobject;
 621                 my $fn_name = PrettifyTypeName($d->{NAME}, $basename);
 622
 623                 if ($d->{TYPE} eq "STRUCT") {
 624                         $typeobject = $self->PythonStruct($modulename, $fn_name, $d->{NAME}, mapTypeName($d), $d);
 625                 } else {
 626                         $typeobject = $self->PythonStruct($modulename, $fn_name, $d->{NAME}, mapTypeName($d), $d->{DATA});
 627                 }
 628
 629                 $self->register_module_typeobject($fn_name, $typeobject);
 630         }
 631
 632         if ($d->{TYPE} eq "ENUM" or $d->{TYPE} eq "BITMAP") {
 633                 $self->EnumAndBitmapConsts($d->{NAME}, $d);
 634         }
 635
 636         if ($d->{TYPE} eq "TYPEDEF" and ($d->{DATA}->{TYPE} eq "ENUM" or $d->{DATA}->{TYPE} eq "BITMAP")) {
 637                 $self->EnumAndBitmapConsts($d->{NAME}, $d->{DATA});
 638         }
 639
 640         if ($actual_ctype->{TYPE} eq "UNION" and defined($actual_ctype->{ELEMENTS})) {
 641                 $self->pidl("PyObject *py_import_$d->{NAME}(TALLOC_CTX *mem_ctx, int level, " .mapTypeName($d) . " *in)");
 642                 $self->pidl("{");
 643                 $self->indent;
 644                 $self->FromUnionToPythonFunction("mem_ctx", $actual_ctype, "level", "in") if ($actual_ctype->{TYPE} eq "UNION");
 645                 $self->deindent;
 646                 $self->pidl("}");
 647                 $self->pidl("");
 648
 649                 $self->pidl(mapTypeName($d) . " *py_export_$d->{NAME}(TALLOC_CTX *mem_ctx, int level, PyObject *in)");
 650                 $self->pidl("{");
 651                 $self->indent;
 652                 $self->FromPythonToUnionFunction($actual_ctype, mapTypeName($d), "level", "mem_ctx", "in") if ($actual_ctype->{TYPE} eq "UNION");
 653                 $self->deindent;
 654                 $self->pidl("}");
 655                 $self->pidl("");
 656         }
 657 }
 658
 659 sub DocString($$$)
 660 {
 661         my ($self, $d, $name) = @_;
 662         if (has_property($d, "helpstring")) {
 663                 my $docstring = uc("py_doc_$name");
 664                 $self->pidl("#define $docstring ".has_property($d, "helpstring"));
 665                 return $docstring;
 666         }
 667
 668         return undef;
 669 }
 670
 671 sub Interface($$$)
 672 {
 673         my($self,$interface,$basename) = @_;
 674
 675         if (has_property($interface, "pyhelper")) {
 676                 $self->pidl("#include \"".unmake_str($interface->{PROPERTIES}->{pyhelper})."\"\n");
 677         }
 678
 679         $self->Const($_) foreach (@{$interface->{CONSTS}});
 680
 681         foreach my $d (@{$interface->{TYPES}}) {
 682                 next if has_property($d, "nopython");
 683
 684                 $self->PythonType($basename, $d, $interface, $basename);
 685         }
 686
 687         if (defined $interface->{PROPERTIES}->{uuid}) {
 688                 $self->pidl_hdr("staticforward PyTypeObject $interface->{NAME}_InterfaceType;\n");
 689                 $self->pidl("");
 690
 691                 my @fns = ();
 692
 693                 foreach my $d (@{$interface->{FUNCTIONS}}) {
 694                         next if has_property($d, "noopnum");
 695                         next if has_property($d, "nopython");
 696                         next if has_property($d, "todo");
 697
 698                         my $skip = 0;
 699                         foreach my $e (@{$d->{ELEMENTS}}) {
 700                                 if (ContainsPipe($e, $e->{LEVELS}[0])) {
 701                                         $skip = 1;
 702                                         last;
 703                                 }
 704                         }
 705                         next if $skip;
 706
 707                         my $prettyname = $d->{NAME};
 708
 709                         $prettyname =~ s/^$interface->{NAME}_//;
 710                         $prettyname =~ s/^$basename\_//;
 711
 712                         my ($infn, $outfn, $fndocstring) = $self->PythonFunction($d, $interface->{NAME}, $prettyname);
 713
 714                         push (@fns, [$infn, $outfn, "dcerpc_$d->{NAME}_r", $prettyname, $fndocstring, $d->{OPNUM}]);
 715                 }
 716
 717                 $self->pidl("const struct PyNdrRpcMethodDef py_ndr_$interface->{NAME}\_methods[] = {");
 718                 $self->indent;
 719                 foreach my $d (@fns) {
 720                         my ($infn, $outfn, $callfn, $prettyname, $docstring, $opnum) = @$d;
 721                         $self->pidl("{ \"$prettyname\", $docstring, (py_dcerpc_call_fn)$callfn, (py_data_pack_fn)$infn, (py_data_unpack_fn)$outfn, $opnum, &ndr_table_$interface->{NAME} },");
 722                 }
 723                 $self->pidl("{ NULL }");
 724                 $self->deindent;
 725                 $self->pidl("};");
 726                 $self->pidl("");
 727
 728                 $self->pidl("static PyObject *interface_$interface->{NAME}_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)");
 729                 $self->pidl("{");
 730                 $self->indent;
 731                 $self->pidl("return py_dcerpc_interface_init_helper(type, args, kwargs, &ndr_table_$interface->{NAME});");
 732                 $self->deindent;
 733                 $self->pidl("}");
 734
 735                 $self->pidl("");
 736
 737                 my $signature =
 738 "\"$interface->{NAME}(binding, lp_ctx=None, credentials=None) -> connection\\n\"
 739 \"\\n\"
 740 \"binding should be a DCE/RPC binding string (for example: ncacn_ip_tcp:127.0.0.1)\\n\"
 741 \"lp_ctx should be a path to a smb.conf file or a param.LoadParm object\\n\"
 742 \"credentials should be a credentials.Credentials object.\\n\\n\"";
 743
 744                 my $docstring = $self->DocString($interface, $interface->{NAME});
 745
 746                 if ($docstring) {
 747                         $docstring = "$signature$docstring";
 748                 } else {
 749                         $docstring = $signature;
 750                 }
 751
 752                 my $if_typename = "$interface->{NAME}_InterfaceType";
 753
 754                 $self->pidl("static PyTypeObject $if_typename = {");
 755                 $self->indent;
 756                 $self->pidl("PyObject_HEAD_INIT(NULL) 0,");
 757                 $self->pidl(".tp_name = \"$basename.$interface->{NAME}\",");
 758                 $self->pidl(".tp_basicsize = sizeof(dcerpc_InterfaceObject),");
 759                 $self->pidl(".tp_doc = $docstring,");
 760                 $self->pidl(".tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,");
 761                 $self->pidl(".tp_new = interface_$interface->{NAME}_new,");
 762                 $self->deindent;
 763                 $self->pidl("};");
 764
 765                 $self->pidl("");
 766
 767                 $self->register_module_typeobject($interface->{NAME}, "&$if_typename");
 768                 my $dcerpc_typename = $self->import_type_variable("samba.dcerpc.base", "ClientConnection");
 769                 $self->register_module_prereadycode(["$if_typename.tp_base = $dcerpc_typename;", ""]);
 770                 $self->register_module_postreadycode(["if (!PyInterface_AddNdrRpcMethods(&$if_typename, py_ndr_$interface->{NAME}\_methods))", "\treturn;", ""]);
 771
 772
 773                 $self->pidl("static PyObject *syntax_$interface->{NAME}_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)");
 774                 $self->pidl("{");
 775                 $self->indent;
 776                 $self->pidl("return py_dcerpc_syntax_init_helper(type, args, kwargs, &ndr_table_$interface->{NAME}.syntax_id);");
 777                 $self->deindent;
 778                 $self->pidl("}");
 779
 780                 $self->pidl("");
 781
 782                 my $signature = "\"abstract_syntax()\\n\"";
 783
 784                 my $docstring = $self->DocString($interface, $interface->{NAME}."_syntax");
 785
 786                 if ($docstring) {
 787                         $docstring = "$signature$docstring";
 788                 } else {
 789                         $docstring = $signature;
 790                 }
 791
 792                 my $syntax_typename = "$interface->{NAME}_SyntaxType";
 793
 794                 $self->pidl("static PyTypeObject $syntax_typename = {");
 795                 $self->indent;
 796                 $self->pidl("PyObject_HEAD_INIT(NULL) 0,");
 797                 $self->pidl(".tp_name = \"$basename.$interface->{NAME}\",");
 798                 $self->pidl(".tp_basicsize = sizeof(pytalloc_Object),");
 799                 $self->pidl(".tp_doc = $docstring,");
 800                 $self->pidl(".tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,");
 801                 $self->pidl(".tp_new = syntax_$interface->{NAME}_new,");
 802                 $self->deindent;
 803                 $self->pidl("};");
 804
 805                 $self->pidl("");
 806
 807                 $self->register_module_typeobject("abstract_syntax", "&$syntax_typename");
 808                 my $ndr_typename = $self->import_type_variable("samba.dcerpc.misc", "ndr_syntax_id");
 809                 $self->register_module_prereadycode(["$syntax_typename.tp_base = $ndr_typename;", ""]);
 810         }
 811
 812         $self->pidl_hdr("\n");
 813 }
 814
 815 sub register_module_method($$$$$)
 816 {
 817         my ($self, $fn_name, $pyfn_name, $flags, $doc) = @_;
 818
 819         push (@{$self->{module_methods}}, [$fn_name, $pyfn_name, $flags, $doc])
 820 }
 821
 822 sub register_module_typeobject($$$)
 823 {
 824         my ($self, $name, $py_name) = @_;
 825
 826         $self->register_module_object($name, "(PyObject *)(void *)$py_name");
 827
 828         $self->check_ready_type($py_name);
 829
 830         $self->register_patch_type_call($name, $py_name);
 831 }
 832
 833 sub check_ready_type($$)
 834 {
 835         my ($self, $py_name) = @_;
 836         push (@{$self->{ready_types}}, $py_name) unless (grep(/^$py_name$/,@{$self->{ready_types}}));
 837 }
 838
 839 sub register_module_import($$)
 840 {
 841         my ($self, $module_path) = @_;
 842
 843         my $var_name = $module_path;
 844         $var_name =~ s/\./_/g;
 845         $var_name = "dep_$var_name";
 846
 847         $self->{module_imports}->{$var_name} = $module_path;
 848
 849         return $var_name;
 850 }
 851
 852 sub import_type_variable($$$)
 853 {
 854         my ($self, $module, $name) = @_;
 855
 856         $self->register_module_import($module);
 857         unless (defined($self->{type_imports}->{$name})) {
 858                 $self->{type_imports}->{$name} = $module;
 859         }
 860         return "$name\_Type";
 861 }
 862
 863 sub use_type_variable($$)
 864 {
 865         my ($self, $orig_ctype) = @_;
 866         # FIXME: Have a global lookup table for types that look different on the
 867         # wire than they are named in C?
 868         if ($orig_ctype->{NAME} eq "dom_sid2" or
 869             $orig_ctype->{NAME} eq "dom_sid28" or
 870             $orig_ctype->{NAME} eq "dom_sid0") {
 871                 $orig_ctype->{NAME} = "dom_sid";
 872         }
 873         if ($orig_ctype->{NAME} eq "spoolss_security_descriptor") {
 874                 $orig_ctype->{NAME} = "security_descriptor";
 875         }
 876
 877         my $ctype = resolveType($orig_ctype);
 878         unless (defined($ctype->{BASEFILE})) {
 879                 return undef;
 880         }
 881         # If this is an external type, make sure we do the right imports.
 882         if (($ctype->{BASEFILE} ne $self->{BASENAME})) {
 883                 return $self->import_type_variable("samba.dcerpc.$ctype->{BASEFILE}", $ctype->{NAME});
 884         }
 885         return "&$ctype->{NAME}_Type";
 886 }
 887
 888 sub register_patch_type_call($$$)
 889 {
 890         my ($self, $typename, $cvar) = @_;
 891
 892         push(@{$self->{patch_type_calls}}, [$typename, $cvar]);
 893
 894 }
 895
 896 sub register_module_prereadycode($$)
 897 {
 898         my ($self, $code) = @_;
 899
 900         push (@{$self->{prereadycode}}, @$code);
 901 }
 902
 903 sub register_module_postreadycode($$)
 904 {
 905         my ($self, $code) = @_;
 906
 907         push (@{$self->{postreadycode}}, @$code);
 908 }
 909
 910 sub register_module_object($$$)
 911 {
 912         my ($self, $name, $py_name) = @_;
 913
 914         push (@{$self->{module_objects}}, [$name, $py_name])
 915 }
 916
 917 sub assign($$$)
 918 {
 919         my ($self, $dest, $src) = @_;
 920         if ($dest =~ /^\&/ and $src eq "NULL") {
 921                 $self->pidl("memset($dest, 0, sizeof(" . get_value_of($dest) . "));");
 922         } elsif ($dest =~ /^\&/) {
 923                 my $destvar = get_value_of($dest);
 924                 $self->pidl("$destvar = *$src;");
 925         } else {
 926                 $self->pidl("$dest = $src;");
 927         }
 928 }
 929
 930 sub ConvertObjectFromPythonData($$$$$$;$)
 931 {
 932         my ($self, $mem_ctx, $cvar, $ctype, $target, $fail, $location) = @_;
 933
 934         fatal($location, "undef type for $cvar") unless(defined($ctype));
 935
 936         $ctype = resolveType($ctype);
 937
 938         my $actual_ctype = $ctype;
 939         if ($actual_ctype->{TYPE} eq "TYPEDEF") {
 940                 $actual_ctype = $actual_ctype->{DATA};
 941         }
 942
 943         if ($actual_ctype->{TYPE} eq "ENUM" or $actual_ctype->{TYPE} eq "BITMAP") {
 944                 $self->pidl("if (PyLong_Check($cvar)) {");
 945                 $self->indent;
 946                 $self->pidl("$target = PyLong_AsLongLong($cvar);");
 947                 $self->deindent;
 948                 $self->pidl("} else if (PyInt_Check($cvar)) {");
 949                 $self->indent;
 950                 $self->pidl("$target = PyInt_AsLong($cvar);");
 951                 $self->deindent;
 952                 $self->pidl("} else {");
 953                 $self->indent;
 954                 $self->pidl("PyErr_Format(PyExc_TypeError, \"Expected type %s or %s\",\\");
 955                 $self->pidl("  PyInt_Type.tp_name, PyLong_Type.tp_name);");
 956                 $self->pidl($fail);
 957                 $self->deindent;
 958                 $self->pidl("}");
 959                 return;
 960         }
 961         if ($actual_ctype->{TYPE} eq "SCALAR" ) {
 962                 if (expandAlias($actual_ctype->{NAME}) =~ /^(u?int64|hyper|dlong|udlong|udlongr|NTTIME_hyper|NTTIME|NTTIME_1sec)$/) {
 963                         $self->pidl("if (PyLong_Check($cvar)) {");
 964                         $self->indent;
 965                         $self->pidl("$target = PyLong_AsLongLong($cvar);");
 966                         $self->deindent;
 967                         $self->pidl("} else if (PyInt_Check($cvar)) {");
 968                         $self->indent;
 969                         $self->pidl("$target = PyInt_AsLong($cvar);");
 970                         $self->deindent;
 971                         $self->pidl("} else {");
 972                         $self->indent;
 973                         $self->pidl("PyErr_Format(PyExc_TypeError, \"Expected type %s or %s\",\\");
 974                         $self->pidl("  PyInt_Type.tp_name, PyLong_Type.tp_name);");
 975                         $self->pidl($fail);
 976                         $self->deindent;
 977                         $self->pidl("}");
 978                         return;
 979                 }
 980                 if (expandAlias($actual_ctype->{NAME}) =~ /^(char|u?int[0-9]*|time_t|uid_t|gid_t)$/) {
 981                         $self->pidl("PY_CHECK_TYPE(&PyInt_Type, $cvar, $fail);");
 982                         $self->pidl("$target = PyInt_AsLong($cvar);");
 983                         return;
 984                 }
 985         }
 986
 987         if ($actual_ctype->{TYPE} eq "STRUCT" or $actual_ctype->{TYPE} eq "INTERFACE") {
 988                 my $ctype_name = $self->use_type_variable($ctype);
 989                 unless (defined ($ctype_name)) {
 990                         error($location, "Unable to determine origin of type `" . mapTypeName($ctype) . "'");
 991                         $self->pidl("PyErr_SetString(PyExc_TypeError, \"Can not convert C Type " . mapTypeName($ctype) . " from Python\");");
 992                         return;
 993                 }
 994                 $self->pidl("PY_CHECK_TYPE($ctype_name, $cvar, $fail);");
 995                 $self->pidl("if (talloc_reference($mem_ctx, pytalloc_get_mem_ctx($cvar)) == NULL) {");
 996                 $self->indent;
 997                 $self->pidl("PyErr_NoMemory();");
 998                 $self->pidl("$fail");
 999                 $self->deindent;
1000                 $self->pidl("}");
1001                 $self->assign($target, "(".mapTypeName($ctype)." *)pytalloc_get_ptr($cvar)");
1002                 return;
1003         }
1004
1005         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "DATA_BLOB") {
1006                 $self->pidl("$target = data_blob_talloc($mem_ctx, PyString_AS_STRING($cvar), PyString_GET_SIZE($cvar));");
1007                 return;
1008         }
1009
1010         if ($actual_ctype->{TYPE} eq "SCALAR" and
1011                 ($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")) {
1012                 $self->pidl("$target = talloc_strdup($mem_ctx, PyString_AS_STRING($cvar));");
1013                 return;
1014         }
1015
1016         if ($actual_ctype->{TYPE} eq "SCALAR" and ($actual_ctype->{NAME} eq "dns_string" or $actual_ctype->{NAME} eq "dns_name")) {
1017                 $self->pidl("$target = talloc_strdup($mem_ctx, PyString_AS_STRING($cvar));");
1018                 return;
1019         }
1020
1021         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "ipv4address") {
1022                 $self->pidl("$target = PyString_AS_STRING($cvar);");
1023                 return;
1024         }
1025
1026         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "ipv6address") {
1027                 $self->pidl("$target = PyString_AsString($cvar);");
1028                 return;
1029         }
1030
1031         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "dnsp_name") {
1032                 $self->pidl("$target = PyString_AS_STRING($cvar);");
1033                 return;
1034         }
1035
1036         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "dnsp_string") {
1037                 $self->pidl("$target = PyString_AS_STRING($cvar);");
1038                 return;
1039         }
1040
1041         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "NTSTATUS") {
1042                 $self->pidl("$target = NT_STATUS(PyInt_AsLong($cvar));");
1043                 return;
1044         }
1045
1046         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "WERROR") {
1047                 $self->pidl("$target = W_ERROR(PyInt_AsLong($cvar));");
1048                 return;
1049         }
1050
1051         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "string_array") {
1052                 $self->pidl("$target = PyCObject_AsVoidPtr($cvar);");
1053                 return;
1054         }
1055
1056         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "pointer") {
1057                 $self->assign($target, "PyCObject_AsVoidPtr($cvar)");
1058                 return;
1059         }
1060
1061         fatal($location, "unknown type `$actual_ctype->{TYPE}' for ".mapTypeName($ctype) . ": $cvar");
1062
1063 }
1064
1065 sub ConvertObjectFromPythonLevel($$$$$$$$)
1066 {
1067         my ($self, $env, $mem_ctx, $py_var, $e, $l, $var_name, $fail) = @_;
1068         my $nl = GetNextLevel($e, $l);
1069         if ($nl and $nl->{TYPE} eq "SUBCONTEXT") {
1070                 $nl = GetNextLevel($e, $nl);
1071         }
1072         my $pl = GetPrevLevel($e, $l);
1073         if ($pl and $pl->{TYPE} eq "SUBCONTEXT") {
1074                 $pl = GetPrevLevel($e, $pl);
1075         }
1076
1077         if ($l->{TYPE} eq "POINTER") {
1078                 if ($l->{POINTER_TYPE} ne "ref") {
1079                         $self->pidl("if ($py_var == Py_None) {");
1080                         $self->indent;
1081                         $self->pidl("$var_name = NULL;");
1082                         $self->deindent;
1083                         $self->pidl("} else {");
1084                         $self->indent;
1085                 }
1086                 # if we want to handle more than one level of pointer in python interfaces
1087                 # then this is where we would need to allocate it
1088                 if ($l->{POINTER_TYPE} eq "ref") {
1089                         $self->pidl("$var_name = talloc_ptrtype($mem_ctx, $var_name);");
1090                 } elsif ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::is_scalar($nl->{DATA_TYPE})
1091                          and not Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE})) {
1092                         $self->pidl("$var_name = talloc_ptrtype($mem_ctx, $var_name);");
1093                 } else {
1094                         $self->pidl("$var_name = NULL;");
1095                 }
1096                 unless ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE})) {
1097                         $var_name = get_value_of($var_name);
1098                 }
1099                 $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $py_var, $e, $nl, $var_name, $fail);
1100                 if ($l->{POINTER_TYPE} ne "ref") {
1101                         $self->deindent;
1102                         $self->pidl("}");
1103                 }
1104         } elsif ($l->{TYPE} eq "ARRAY") {
1105                 if ($pl && $pl->{TYPE} eq "POINTER") {
1106                         $var_name = get_pointer_to($var_name);
1107                 }
1108
1109                 if (is_charset_array($e, $l)) {
1110                         $self->pidl("if (PyUnicode_Check($py_var)) {");
1111                         $self->indent;
1112                         # FIXME: Use Unix charset setting rather than utf-8
1113                         $self->pidl($var_name . " = PyString_AS_STRING(PyUnicode_AsEncodedString($py_var, \"utf-8\", \"ignore\"));");
1114                         $self->deindent;
1115                         $self->pidl("} else if (PyString_Check($py_var)) {");
1116                         $self->indent;
1117                         $self->pidl($var_name . " = PyString_AS_STRING($py_var);");
1118                         $self->deindent;
1119                         $self->pidl("} else {");
1120                         $self->indent;
1121                         $self->pidl("PyErr_Format(PyExc_TypeError, \"Expected string or unicode object, got %s\", Py_TYPE($py_var)->tp_name);");
1122                         $self->pidl("$fail");
1123                         $self->deindent;
1124                         $self->pidl("}");
1125                 } else {
1126                         my $counter = "$e->{NAME}_cntr_$l->{LEVEL_INDEX}";
1127                         $self->pidl("PY_CHECK_TYPE(&PyList_Type, $py_var, $fail);");
1128                         $self->pidl("{");
1129                         $self->indent;
1130                         $self->pidl("int $counter;");
1131                         if (ArrayDynamicallyAllocated($e, $l)) {
1132                                 $self->pidl("$var_name = talloc_array_ptrtype($mem_ctx, $var_name, PyList_GET_SIZE($py_var));");
1133                                 $self->pidl("if (!$var_name) { $fail; }");
1134                                 $self->pidl("talloc_set_name_const($var_name, \"ARRAY: $var_name\");");
1135                         }
1136                         $self->pidl("for ($counter = 0; $counter < PyList_GET_SIZE($py_var); $counter++) {");
1137                         $self->indent;
1138                         $self->ConvertObjectFromPythonLevel($env, $var_name, "PyList_GET_ITEM($py_var, $counter)", $e, $nl, $var_name."[$counter]", $fail);
1139                         $self->deindent;
1140                         $self->pidl("}");
1141                         $self->deindent;
1142                         $self->pidl("}");
1143                 }
1144         } elsif ($l->{TYPE} eq "DATA") {
1145                 if (not Parse::Pidl::Typelist::is_scalar($l->{DATA_TYPE})) {
1146                         $var_name = get_pointer_to($var_name);
1147                 }
1148                 $self->ConvertObjectFromPythonData($mem_ctx, $py_var, $l->{DATA_TYPE}, $var_name, $fail, $e->{ORIGINAL});
1149         } elsif ($l->{TYPE} eq "SWITCH") {
1150                 $var_name = get_pointer_to($var_name);
1151                 my $switch = ParseExpr($l->{SWITCH_IS}, $env, $e);
1152                 my $switch_ptr = "$e->{NAME}_switch_$l->{LEVEL_INDEX}";
1153                 $self->pidl("{");
1154                 $self->indent;
1155                 my $union_type = mapTypeName($nl->{DATA_TYPE});
1156                 $self->pidl("$union_type *$switch_ptr;");
1157                 $self->pidl("$switch_ptr = py_export_" . $nl->{DATA_TYPE} . "($mem_ctx, $switch, $py_var);");
1158                 $self->fail_on_null($switch_ptr, $fail);
1159                 $self->assign($var_name, "$switch_ptr");
1160                 $self->deindent;
1161                 $self->pidl("}");
1162         } elsif ($l->{TYPE} eq "SUBCONTEXT") {
1163                 $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $py_var, $e, $nl, $var_name, $fail);
1164         } else {
1165                 fatal($e->{ORIGINAL}, "unknown level type $l->{TYPE}");
1166         }
1167 }
1168
1169 sub ConvertObjectFromPython($$$$$$$)
1170 {
1171         my ($self, $env, $mem_ctx, $ctype, $cvar, $target, $fail) = @_;
1172
1173         $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $cvar, $ctype, $ctype->{LEVELS}[0], $target, $fail);
1174 }
1175
1176 sub ConvertScalarToPython($$$)
1177 {
1178         my ($self, $ctypename, $cvar) = @_;
1179
1180         die("expected string for $cvar, not $ctypename") if (ref($ctypename) eq "HASH");
1181
1182         $ctypename = expandAlias($ctypename);
1183
1184         if ($ctypename =~ /^(u?int64|hyper|dlong|udlong|udlongr|NTTIME_hyper|NTTIME|NTTIME_1sec)$/) {
1185                 return "PyLong_FromLongLong($cvar)";
1186         }
1187
1188         if ($ctypename =~ /^(char|u?int[0-9]*|time_t|uid_t|gid_t)$/) {
1189                 return "PyInt_FromLong($cvar)";
1190         }
1191
1192         if ($ctypename eq "DATA_BLOB") {
1193                 return "PyString_FromStringAndSize((char *)($cvar).data, ($cvar).length)";
1194         }
1195
1196         if ($ctypename eq "NTSTATUS") {
1197                 return "PyErr_FromNTSTATUS($cvar)";
1198         }
1199
1200         if ($ctypename eq "WERROR") {
1201                 return "PyErr_FromWERROR($cvar)";
1202         }
1203
1204         if (($ctypename eq "string" or $ctypename eq "nbt_string" or $ctypename eq "nbt_name" or $ctypename eq "wrepl_nbt_name")) {
1205                 return "PyString_FromStringOrNULL($cvar)";
1206         }
1207
1208         if (($ctypename eq "dns_string" or $ctypename eq "dns_name")) {
1209                 return "PyString_FromStringOrNULL($cvar)";
1210         }
1211
1212         # Not yet supported
1213         if ($ctypename eq "string_array") { return "pytalloc_CObject_FromTallocPtr($cvar)"; }
1214         if ($ctypename eq "ipv4address") { return "PyString_FromStringOrNULL($cvar)"; }
1215         if ($ctypename eq "ipv6address") { return "PyString_FromStringOrNULL($cvar)"; }
1216         if ($ctypename eq "dnsp_name") { return "PyString_FromStringOrNULL($cvar)"; }
1217         if ($ctypename eq "dnsp_string") { return "PyString_FromStringOrNULL($cvar)"; }
1218         if ($ctypename eq "pointer") {
1219                 return "pytalloc_CObject_FromTallocPtr($cvar)";
1220         }
1221
1222         die("Unknown scalar type $ctypename");
1223 }
1224
1225 sub ConvertObjectToPythonData($$$$$;$)
1226 {
1227         my ($self, $mem_ctx, $ctype, $cvar, $location) = @_;
1228
1229         die("undef type for $cvar") unless(defined($ctype));
1230
1231         $ctype = resolveType($ctype);
1232
1233         my $actual_ctype = $ctype;
1234         if ($actual_ctype->{TYPE} eq "TYPEDEF") {
1235                 $actual_ctype = $actual_ctype->{DATA};
1236         }
1237
1238         if ($actual_ctype->{TYPE} eq "ENUM") {
1239                 return $self->ConvertScalarToPython(Parse::Pidl::Typelist::enum_type_fn($actual_ctype), $cvar);
1240         } elsif ($actual_ctype->{TYPE} eq "BITMAP") {
1241                 return $self->ConvertScalarToPython(Parse::Pidl::Typelist::bitmap_type_fn($actual_ctype), $cvar);
1242         } elsif ($actual_ctype->{TYPE} eq "SCALAR") {
1243                 return $self->ConvertScalarToPython($actual_ctype->{NAME}, $cvar);
1244         } elsif ($actual_ctype->{TYPE} eq "UNION") {
1245                 fatal($ctype, "union without discriminant: " . mapTypeName($ctype) . ": $cvar");
1246         } elsif ($actual_ctype->{TYPE} eq "STRUCT" or $actual_ctype->{TYPE} eq "INTERFACE") {
1247                 my $ctype_name = $self->use_type_variable($ctype);
1248                 unless (defined($ctype_name)) {
1249                         error($location, "Unable to determine origin of type `" . mapTypeName($ctype) . "'");
1250                         return "NULL"; # FIXME!
1251                 }
1252                 return "pytalloc_reference_ex($ctype_name, $mem_ctx, $cvar)";
1253         }
1254
1255         fatal($location, "unknown type $actual_ctype->{TYPE} for ".mapTypeName($ctype) . ": $cvar");
1256 }
1257
1258 sub fail_on_null($$$)
1259 {
1260         my ($self, $var, $fail) = @_;
1261         $self->pidl("if ($var == NULL) {");
1262         $self->indent;
1263         $self->pidl($fail);
1264         $self->deindent;
1265         $self->pidl("}");
1266 }
1267
1268 sub ConvertObjectToPythonLevel($$$$$$)
1269 {
1270         my ($self, $mem_ctx, $env, $e, $l, $var_name, $py_var, $fail) = @_;
1271         my $nl = GetNextLevel($e, $l);
1272         if ($nl and $nl->{TYPE} eq "SUBCONTEXT") {
1273                 $nl = GetNextLevel($e, $nl);
1274         }
1275         my $pl = GetPrevLevel($e, $l);
1276         if ($pl and $pl->{TYPE} eq "SUBCONTEXT") {
1277                 $pl = GetPrevLevel($e, $pl);
1278         }
1279
1280         if ($l->{TYPE} eq "POINTER") {
1281                 if ($l->{POINTER_TYPE} ne "ref") {
1282                         $self->pidl("if ($var_name == NULL) {");
1283                         $self->indent;
1284                         $self->pidl("$py_var = Py_None;");
1285                         $self->pidl("Py_INCREF($py_var);");
1286                         $self->deindent;
1287                         $self->pidl("} else {");
1288                         $self->indent;
1289                 }
1290                 my $var_name2 = $var_name;
1291                 unless ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE})) {
1292                         $var_name2 = get_value_of($var_name);
1293                 }
1294                 $self->ConvertObjectToPythonLevel($var_name, $env, $e, $nl, $var_name2, $py_var, $fail);
1295                 if ($l->{POINTER_TYPE} ne "ref") {
1296                         $self->deindent;
1297                         $self->pidl("}");
1298                 }
1299         } elsif ($l->{TYPE} eq "ARRAY") {
1300                 if ($pl && $pl->{TYPE} eq "POINTER") {
1301                         $var_name = get_pointer_to($var_name);
1302                 }
1303
1304                 if (is_charset_array($e, $l)) {
1305                         # FIXME: Use Unix charset setting rather than utf-8
1306                         $self->pidl("if ($var_name == NULL) {");
1307                         $self->indent;
1308                         $self->pidl("$py_var = Py_None;");
1309                         $self->pidl("Py_INCREF($py_var);");
1310                         $self->deindent;
1311                         $self->pidl("} else {");
1312                         $self->indent;
1313                         $self->pidl("$py_var = PyUnicode_Decode($var_name, strlen($var_name), \"utf-8\", \"ignore\");");
1314                         $self->deindent;
1315                         $self->pidl("}");
1316                 } else {
1317                         die("No SIZE_IS for array $var_name") unless (defined($l->{SIZE_IS}));
1318                         my $length = $l->{SIZE_IS};
1319                         if (defined($l->{LENGTH_IS})) {
1320                                 $length = $l->{LENGTH_IS};
1321                         }
1322
1323                         $length = ParseExpr($length, $env, $e);
1324                         $self->pidl("$py_var = PyList_New($length);");
1325                         $self->fail_on_null($py_var, $fail);
1326                         $self->pidl("{");
1327                         $self->indent;
1328                         my $counter = "$e->{NAME}_cntr_$l->{LEVEL_INDEX}";
1329                         $self->pidl("int $counter;");
1330                         $self->pidl("for ($counter = 0; $counter < $length; $counter++) {");
1331                         $self->indent;
1332                         my $member_var = "py_$e->{NAME}_$l->{LEVEL_INDEX}";
1333                         $self->pidl("PyObject *$member_var;");
1334                         $self->ConvertObjectToPythonLevel($var_name, $env, $e, $nl, $var_name."[$counter]", $member_var, $fail);
1335                         $self->pidl("PyList_SetItem($py_var, $counter, $member_var);");
1336                         $self->deindent;
1337                         $self->pidl("}");
1338                         $self->deindent;
1339                         $self->pidl("}");
1340                 }
1341         } elsif ($l->{TYPE} eq "SWITCH") {
1342                 $var_name = get_pointer_to($var_name);
1343                 my $switch = ParseExpr($l->{SWITCH_IS}, $env, $e);
1344                 $self->pidl("$py_var = py_import_" . $nl->{DATA_TYPE} . "($mem_ctx, $switch, $var_name);");
1345                 $self->fail_on_null($py_var, $fail);
1346
1347         } elsif ($l->{TYPE} eq "DATA") {
1348                 if (not Parse::Pidl::Typelist::is_scalar($l->{DATA_TYPE})) {
1349                         $var_name = get_pointer_to($var_name);
1350                 }
1351                 my $conv = $self->ConvertObjectToPythonData($mem_ctx, $l->{DATA_TYPE}, $var_name, $e->{ORIGINAL});
1352                 $self->pidl("$py_var = $conv;");
1353         } elsif ($l->{TYPE} eq "SUBCONTEXT") {
1354                 $self->ConvertObjectToPythonLevel($mem_ctx, $env, $e, $nl, $var_name, $py_var, $fail);
1355         } else {
1356                 fatal($e->{ORIGINAL}, "Unknown level type $l->{TYPE} $var_name");
1357         }
1358 }
1359
1360 sub ConvertObjectToPython($$$$$$)
1361 {
1362         my ($self, $mem_ctx, $env, $ctype, $cvar, $py_var, $fail) = @_;
1363
1364         $self->ConvertObjectToPythonLevel($mem_ctx, $env, $ctype, $ctype->{LEVELS}[0], $cvar, $py_var, $fail);
1365 }
1366
1367 sub Parse($$$$$)
1368 {
1369     my($self,$basename,$ndr,$ndr_hdr,$hdr) = @_;
1370
1371         $self->{BASENAME} = $basename;
1372
1373     $self->pidl_hdr("
1374 /* Python wrapper functions auto-generated by pidl */
1375 #include <Python.h>
1376 #include \"includes.h\"
1377 #include <pytalloc.h>
1378 #include \"librpc/rpc/pyrpc.h\"
1379 #include \"librpc/rpc/pyrpc_util.h\"
1380 #include \"$hdr\"
1381 #include \"$ndr_hdr\"
1382
1383 ");
1384
1385         foreach my $x (@$ndr) {
1386                 ($x->{TYPE} eq "IMPORT") && $self->Import(@{$x->{PATHS}});
1387             ($x->{TYPE} eq "INTERFACE") && $self->Interface($x, $basename);
1388         }
1389
1390         $self->pidl("static PyMethodDef $basename\_methods[] = {");
1391         $self->indent;
1392         foreach (@{$self->{module_methods}}) {
1393                 my ($fn_name, $pyfn_name, $flags, $doc) = @$_;
1394                 $self->pidl("{ \"$fn_name\", (PyCFunction)$pyfn_name, $flags, $doc },");
1395         }
1396
1397         $self->pidl("{ NULL, NULL, 0, NULL }");
1398         $self->deindent;
1399         $self->pidl("};");
1400
1401         $self->pidl("");
1402
1403         $self->pidl_hdr("void init$basename(void);");
1404         $self->pidl("void init$basename(void)");
1405         $self->pidl("{");
1406         $self->indent;
1407         $self->pidl("PyObject *m;");
1408         foreach (keys %{$self->{module_imports}}) {
1409                 $self->pidl("PyObject *$_;");
1410         }
1411         $self->pidl("");
1412
1413         foreach (keys %{$self->{module_imports}}) {
1414                 my $var_name = $_;
1415                 my $module_path = $self->{module_imports}->{$var_name};
1416                 $self->pidl("$var_name = PyImport_ImportModule(\"$module_path\");");
1417                 $self->pidl("if ($var_name == NULL)");
1418                 $self->pidl("\treturn;");
1419                 $self->pidl("");
1420         }
1421
1422         foreach (keys %{$self->{type_imports}}) {
1423                 my $type_var = "$_\_Type";
1424                 my $module_path = $self->{type_imports}->{$_};
1425                 $self->pidl_hdr("static PyTypeObject *$type_var;\n");
1426                 my $pretty_name = PrettifyTypeName($_, $module_path);
1427                 my $module_var = "dep_$module_path";
1428                 $module_var =~ s/\./_/g;
1429                 $self->pidl("$type_var = (PyTypeObject *)PyObject_GetAttrString($module_var, \"$pretty_name\");");
1430                 $self->pidl("if ($type_var == NULL)");
1431                 $self->pidl("\treturn;");
1432                 $self->pidl("");
1433         }
1434
1435         $self->pidl($_) foreach (@{$self->{prereadycode}});
1436
1437         foreach (@{$self->{ready_types}}) {
1438                 $self->pidl("if (PyType_Ready($_) < 0)");
1439                 $self->pidl("\treturn;");
1440         }
1441
1442         $self->pidl($_) foreach (@{$self->{postreadycode}});
1443
1444         foreach (@{$self->{patch_type_calls}}) {
1445                 my ($typename, $cvar) = @$_;
1446                 $self->pidl("#ifdef PY_".uc($typename)."_PATCH");
1447                 $self->pidl("PY_".uc($typename)."_PATCH($cvar);");
1448                 $self->pidl("#endif");
1449         }
1450
1451         $self->pidl("");
1452
1453         $self->pidl("m = Py_InitModule3(\"$basename\", $basename\_methods, \"$basename DCE/RPC\");");
1454         $self->pidl("if (m == NULL)");
1455         $self->pidl("\treturn;");
1456         $self->pidl("");
1457         foreach my $name (keys %{$self->{constants}}) {
1458                 my $py_obj;
1459                 my ($ctype, $cvar) = @{$self->{constants}->{$name}};
1460                 if ($cvar =~ /^[0-9]+$/ or $cvar =~ /^0x[0-9a-fA-F]+$/) {
1461                         $py_obj = "PyInt_FromLong($cvar)";
1462                 } elsif ($cvar =~ /^".*"$/) {
1463                         $py_obj = "PyString_FromString($cvar)";
1464                 } else {
1465                         $py_obj = $self->ConvertObjectToPythonData("NULL", expandAlias($ctype), $cvar, undef);
1466                 }
1467
1468                 $self->pidl("PyModule_AddObject(m, \"$name\", $py_obj);");
1469         }
1470
1471         foreach (@{$self->{module_objects}}) {
1472                 my ($object_name, $c_name) = @$_;
1473                 $self->pidl("Py_INCREF($c_name);");
1474                 $self->pidl("PyModule_AddObject(m, \"$object_name\", $c_name);");
1475         }
1476
1477         $self->pidl("#ifdef PY_MOD_".uc($basename)."_PATCH");
1478         $self->pidl("PY_MOD_".uc($basename)."_PATCH(m);");
1479         $self->pidl("#endif");
1480
1481         $self->pidl("");
1482         $self->deindent;
1483         $self->pidl("}");
1484     return ($self->{res_hdr} . $self->{res});
1485 }
1486
1487 1;