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 $self = { res => "", res_hdr => "", tabs => "",
  26                                  constants => [], constants_uniq => {},
  27                      module_methods => [], module_objects => [], ready_types => [],
  28                                  module_imports => [], module_imports_uniq => {},
  29                                  type_imports => [], type_imports_uniq => {},
  30                                  patch_type_calls => [], prereadycode => [],
  31                                  postreadycode => []};
  32         bless($self, $class);
  33 }
  34
  35 sub pidl_hdr ($$)
  36 {
  37         my $self = shift;
  38         $self->{res_hdr} .= shift;
  39 }
  40
  41 sub pidl($$)
  42 {
  43         my ($self, $d) = @_;
  44         if ($d) {
  45                 if ((!($d =~ /^#/))) {
  46                         $self->{res} .= $self->{tabs};
  47                 }
  48                 $self->{res} .= $d;
  49         }
  50         $self->{res} .= "\n";
  51 }
  52
  53 sub indent($)
  54 {
  55         my ($self) = @_;
  56         $self->{tabs} .= "\t";
  57 }
  58
  59 sub deindent($)
  60 {
  61         my ($self) = @_;
  62         $self->{tabs} = substr($self->{tabs}, 0, -1);
  63 }
  64
  65 sub PrettifyTypeName($$)
  66 {
  67         my ($name, $basename) = @_;
  68
  69         $basename =~ s/^.*\.([^.]+)$/\1/;
  70
  71         $name =~ s/^$basename\_//;
  72
  73
  74         return $name;
  75 }
  76
  77 sub Import
  78 {
  79         my $self = shift;
  80         my @imports = @_;
  81         foreach (@imports) {
  82                 $_ = unmake_str($_);
  83                 s/\.idl$//;
  84                 $self->pidl_hdr("#include \"librpc/gen_ndr/$_\.h\"\n");
  85                 $self->register_module_import("samba.dcerpc.$_");
  86         }
  87 }
  88
  89 sub Const($$)
  90 {
  91     my ($self, $const) = @_;
  92         $self->register_constant($const->{NAME}, $const->{DTYPE}, $const->{VALUE});
  93 }
  94
  95 sub register_constant($$$$)
  96 {
  97         my ($self, $name, $type, $value) = @_;
  98
  99         unless (defined $self->{constants_uniq}->{$name}) {
 100                 my $h = {"key" => $name, "val" => [$type, $value]};
 101                 push @{$self->{constants}}, $h;
 102                 $self->{constants_uniq}->{$name} = $h;
 103         }
 104 }
 105
 106 sub EnumAndBitmapConsts($$$)
 107 {
 108         my ($self, $name, $d) = @_;
 109
 110         return unless (defined($d->{ELEMENTS}));
 111
 112         foreach my $e (@{$d->{ELEMENTS}}) {
 113                 $e =~ /^([A-Za-z0-9_]+)/;
 114                 my $cname = $1;
 115
 116                 $self->register_constant($cname, $d, $cname);
 117         }
 118 }
 119
 120 sub FromUnionToPythonFunction($$$$)
 121 {
 122         my ($self, $mem_ctx, $type, $switch, $name) = @_;
 123
 124         $self->pidl("PyObject *ret;");
 125         $self->pidl("");
 126
 127         $self->pidl("switch ($switch) {");
 128         $self->indent;
 129
 130         foreach my $e (@{$type->{ELEMENTS}}) {
 131                 $self->pidl("$e->{CASE}:");
 132
 133                 $self->indent;
 134
 135                 if ($e->{NAME}) {
 136                         $self->ConvertObjectToPython($mem_ctx, {}, $e, "$name->$e->{NAME}", "ret", "return NULL;");
 137                 } else {
 138                         $self->pidl("ret = Py_None;");
 139                         $self->pidl("Py_INCREF(ret);");
 140                 }
 141
 142                 $self->pidl("return ret;");
 143                 $self->pidl("");
 144
 145                 $self->deindent;
 146         }
 147
 148         $self->deindent;
 149         $self->pidl("}");
 150
 151         $self->pidl("PyErr_SetString(PyExc_TypeError, \"unknown union level\");");
 152         $self->pidl("return NULL;");
 153 }
 154
 155 sub FromPythonToUnionFunction($$$$$)
 156 {
 157         my ($self, $type, $typename, $switch, $mem_ctx, $name) = @_;
 158
 159         my $has_default = 0;
 160
 161         $self->pidl("$typename *ret = talloc_zero($mem_ctx, $typename);");
 162
 163         $self->pidl("switch ($switch) {");
 164         $self->indent;
 165
 166         foreach my $e (@{$type->{ELEMENTS}}) {
 167                 $self->pidl("$e->{CASE}:");
 168                 if ($e->{CASE} eq "default") { $has_default = 1; }
 169                 $self->indent;
 170                 if ($e->{NAME}) {
 171                         $self->ConvertObjectFromPython({}, $mem_ctx, $e, $name, "ret->$e->{NAME}", "talloc_free(ret); return NULL;");
 172                 }
 173                 $self->pidl("break;");
 174                 $self->deindent;
 175                 $self->pidl("");
 176         }
 177
 178         if (!$has_default) {
 179                 $self->pidl("default:");
 180                 $self->indent;
 181                 $self->pidl("PyErr_SetString(PyExc_TypeError, \"invalid union level value\");");
 182                 $self->pidl("talloc_free(ret);");
 183                 $self->pidl("ret = NULL;");
 184                 $self->deindent;
 185         }
 186
 187         $self->deindent;
 188         $self->pidl("}");
 189         $self->pidl("");
 190         $self->pidl("return ret;");
 191 }
 192
 193 sub PythonStruct($$$$$$)
 194 {
 195         my ($self, $modulename, $prettyname, $name, $cname, $d) = @_;
 196
 197         my $env = GenerateStructEnv($d, "object");
 198
 199         $self->pidl("");
 200
 201         my $getsetters = "NULL";
 202
 203         if ($#{$d->{ELEMENTS}} > -1) {
 204                 foreach my $e (@{$d->{ELEMENTS}}) {
 205                         my $varname = "object->$e->{NAME}";
 206                         $self->pidl("static PyObject *py_$name\_get_$e->{NAME}(PyObject *obj, void *closure)");
 207                         $self->pidl("{");
 208                         $self->indent;
 209                         $self->pidl("$cname *object = ($cname *)pytalloc_get_ptr(obj);");
 210                         $self->pidl("PyObject *py_$e->{NAME};");
 211                         $self->ConvertObjectToPython("pytalloc_get_mem_ctx(obj)", $env, $e, $varname, "py_$e->{NAME}", "return NULL;");
 212                         $self->pidl("return py_$e->{NAME};");
 213                         $self->deindent;
 214                         $self->pidl("}");
 215                         $self->pidl("");
 216
 217                         $self->pidl("static int py_$name\_set_$e->{NAME}(PyObject *py_obj, PyObject *value, void *closure)");
 218                         $self->pidl("{");
 219                         $self->indent;
 220                         $self->pidl("$cname *object = ($cname *)pytalloc_get_ptr(py_obj);");
 221                         my $mem_ctx = "pytalloc_get_mem_ctx(py_obj)";
 222                         my $l = $e->{LEVELS}[0];
 223                         my $nl = GetNextLevel($e, $l);
 224                         if ($l->{TYPE} eq "POINTER" and
 225                                 not ($nl->{TYPE} eq "ARRAY" and ($nl->{IS_FIXED} or is_charset_array($e, $nl))) and
 226                                 not ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE}))) {
 227                                 $self->pidl("talloc_unlink(pytalloc_get_mem_ctx(py_obj), $varname);");
 228                         }
 229                         $self->ConvertObjectFromPython($env, $mem_ctx, $e, "value", $varname, "return -1;");
 230                         $self->pidl("return 0;");
 231                         $self->deindent;
 232                         $self->pidl("}");
 233                         $self->pidl("");
 234                 }
 235
 236                 $getsetters = "py_$name\_getsetters";
 237                 $self->pidl("static PyGetSetDef ".$getsetters."[] = {");
 238                 $self->indent;
 239                 foreach my $e (@{$d->{ELEMENTS}}) {
 240                         $self->pidl("{ discard_const_p(char, \"$e->{NAME}\"), py_$name\_get_$e->{NAME}, py_$name\_set_$e->{NAME} },");
 241                 }
 242                 $self->pidl("{ NULL }");
 243                 $self->deindent;
 244                 $self->pidl("};");
 245                 $self->pidl("");
 246         }
 247
 248         $self->pidl("static PyObject *py_$name\_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)");
 249         $self->pidl("{");
 250         $self->indent;
 251         $self->pidl("return pytalloc_new($cname, type);");
 252         $self->deindent;
 253         $self->pidl("}");
 254         $self->pidl("");
 255
 256         my $py_methods = "NULL";
 257
 258         # If the struct is not public there ndr_pull/ndr_push functions will
 259         # be static so not callable from here
 260         if (has_property($d, "public")) {
 261                 $self->pidl("static PyObject *py_$name\_ndr_pack(PyObject *py_obj)");
 262                 $self->pidl("{");
 263                 $self->indent;
 264                 $self->pidl("$cname *object = ($cname *)pytalloc_get_ptr(py_obj);");
 265                 $self->pidl("DATA_BLOB blob;");
 266                 $self->pidl("enum ndr_err_code err;");
 267                 $self->pidl("err = ndr_push_struct_blob(&blob, pytalloc_get_mem_ctx(py_obj), object, (ndr_push_flags_fn_t)ndr_push_$name);");
 268                 $self->pidl("if (err != NDR_ERR_SUCCESS) {");
 269                 $self->indent;
 270                 $self->pidl("PyErr_SetNdrError(err);");
 271                 $self->pidl("return NULL;");
 272                 $self->deindent;
 273                 $self->pidl("}");
 274                 $self->pidl("");
 275                 $self->pidl("return PyString_FromStringAndSize((char *)blob.data, blob.length);");
 276                 $self->deindent;
 277                 $self->pidl("}");
 278                 $self->pidl("");
 279
 280                 $self->pidl("static PyObject *py_$name\_ndr_unpack(PyObject *py_obj, PyObject *args, PyObject *kwargs)");
 281                 $self->pidl("{");
 282                 $self->indent;
 283                 $self->pidl("$cname *object = ($cname *)pytalloc_get_ptr(py_obj);");
 284                 $self->pidl("DATA_BLOB blob;");
 285                 $self->pidl("int blob_length = 0;");
 286                 $self->pidl("enum ndr_err_code err;");
 287                 $self->pidl("const char * const kwnames[] = { \"data_blob\", \"allow_remaining\", NULL };");
 288                 $self->pidl("PyObject *allow_remaining_obj = NULL;");
 289                 $self->pidl("bool allow_remaining = false;");
 290                 $self->pidl("");
 291                 $self->pidl("if (!PyArg_ParseTupleAndKeywords(args, kwargs, \"s#|O:__ndr_unpack__\",");
 292                 $self->indent;
 293                 $self->pidl("discard_const_p(char *, kwnames),");
 294                 $self->pidl("&blob.data, &blob_length,");
 295                 $self->pidl("&allow_remaining_obj)) {");
 296                 $self->deindent;
 297                 $self->indent;
 298                 $self->pidl("return NULL;");
 299                 $self->deindent;
 300                 $self->pidl("}");
 301                 $self->pidl("blob.length = blob_length;");
 302                 $self->pidl("");
 303                 $self->pidl("if (allow_remaining_obj && PyObject_IsTrue(allow_remaining_obj)) {");
 304                 $self->indent;
 305                 $self->pidl("allow_remaining = true;");
 306                 $self->deindent;
 307                 $self->pidl("}");
 308                 $self->pidl("");
 309                 $self->pidl("if (allow_remaining) {");
 310                 $self->indent;
 311                 $self->pidl("err = ndr_pull_struct_blob(&blob, pytalloc_get_mem_ctx(py_obj), object, (ndr_pull_flags_fn_t)ndr_pull_$name);");
 312                 $self->deindent;
 313                 $self->pidl("} else {");
 314                 $self->indent;
 315                 $self->pidl("err = ndr_pull_struct_blob_all(&blob, pytalloc_get_mem_ctx(py_obj), object, (ndr_pull_flags_fn_t)ndr_pull_$name);");
 316                 $self->deindent;
 317                 $self->pidl("}");
 318                 $self->pidl("if (err != NDR_ERR_SUCCESS) {");
 319                 $self->indent;
 320                 $self->pidl("PyErr_SetNdrError(err);");
 321                 $self->pidl("return NULL;");
 322                 $self->deindent;
 323                 $self->pidl("}");
 324                 $self->pidl("");
 325                 $self->pidl("Py_RETURN_NONE;");
 326                 $self->deindent;
 327                 $self->pidl("}");
 328                 $self->pidl("");
 329
 330                 $self->pidl("static PyObject *py_$name\_ndr_print(PyObject *py_obj)");
 331                 $self->pidl("{");
 332                 $self->indent;
 333                 $self->pidl("$cname *object = ($cname *)pytalloc_get_ptr(py_obj);");
 334                 $self->pidl("PyObject *ret;");
 335                 $self->pidl("char *retstr;");
 336                 $self->pidl("");
 337                 $self->pidl("retstr = ndr_print_struct_string(pytalloc_get_mem_ctx(py_obj), (ndr_print_fn_t)ndr_print_$name, \"$name\", object);");
 338                 $self->pidl("ret = PyString_FromString(retstr);");
 339                 $self->pidl("talloc_free(retstr);");
 340                 $self->pidl("");
 341                 $self->pidl("return ret;");
 342                 $self->deindent;
 343                 $self->pidl("}");
 344                 $self->pidl("");
 345
 346                 $py_methods = "py_$name\_methods";
 347                 $self->pidl("static PyMethodDef $py_methods\[] = {");
 348                 $self->indent;
 349                 $self->pidl("{ \"__ndr_pack__\", (PyCFunction)py_$name\_ndr_pack, METH_NOARGS, \"S.ndr_pack(object) -> blob\\nNDR pack\" },");
 350                 $self->pidl("{ \"__ndr_unpack__\", (PyCFunction)py_$name\_ndr_unpack, METH_VARARGS|METH_KEYWORDS, \"S.ndr_unpack(class, blob, allow_remaining=False) -> None\\nNDR unpack\" },");
 351                 $self->pidl("{ \"__ndr_print__\", (PyCFunction)py_$name\_ndr_print, METH_VARARGS, \"S.ndr_print(object) -> None\\nNDR print\" },");
 352                 $self->pidl("{ NULL, NULL, 0, NULL }");
 353                 $self->deindent;
 354                 $self->pidl("};");
 355                 $self->pidl("");
 356         }
 357
 358         $self->pidl_hdr("static PyTypeObject $name\_Type;\n");
 359         $self->pidl("");
 360         my $docstring = $self->DocString($d, $name);
 361         my $typeobject = "$name\_Type";
 362         $self->pidl("static PyTypeObject $typeobject = {");
 363         $self->indent;
 364         $self->pidl("PyObject_HEAD_INIT(NULL) 0,");
 365         $self->pidl(".tp_name = \"$modulename.$prettyname\",");
 366         $self->pidl(".tp_getset = $getsetters,");
 367         if ($docstring) {
 368                 $self->pidl(".tp_doc = $docstring,");
 369         }
 370         $self->pidl(".tp_methods = $py_methods,");
 371         $self->pidl(".tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,");
 372         $self->pidl(".tp_basicsize = sizeof(pytalloc_Object),");
 373         $self->pidl(".tp_new = py_$name\_new,");
 374         $self->deindent;
 375         $self->pidl("};");
 376
 377         $self->pidl("");
 378
 379         my $talloc_typename = $self->import_type_variable("talloc", "Object");
 380         $self->register_module_prereadycode(["$name\_Type.tp_base = $talloc_typename;", ""]);
 381
 382         return "&$typeobject";
 383 }
 384
 385 sub get_metadata_var($)
 386 {
 387         my ($e) = @_;
 388         sub get_var($) { my $x = shift; $x =~ s/\*//g; return $x; }
 389
 390          if (has_property($e, "length_is")) {
 391                 return get_var($e->{PROPERTIES}->{length_is});
 392          } elsif (has_property($e, "size_is")) {
 393                 return get_var($e->{PROPERTIES}->{size_is});
 394          }
 395
 396          return undef;
 397 }
 398
 399 sub find_metadata_args($)
 400 {
 401         my ($fn) = @_;
 402         my $metadata_args = { in => {}, out => {} };
 403
 404         # Determine arguments that are metadata for other arguments (size_is/length_is)
 405         foreach my $e (@{$fn->{ELEMENTS}}) {
 406                 foreach my $dir (@{$e->{DIRECTION}}) {
 407                          my $main = get_metadata_var($e);
 408                          if ($main) {
 409                                  $metadata_args->{$dir}->{$main} = $e->{NAME};
 410                          }
 411                  }
 412         }
 413
 414         return $metadata_args;
 415 }
 416
 417 sub PythonFunctionUnpackOut($$$)
 418 {
 419         my ($self, $fn, $fnname) = @_;
 420
 421         my $outfnname = "unpack_$fnname\_args_out";
 422         my $signature = "";
 423
 424         my $metadata_args = find_metadata_args($fn);
 425
 426         my $env = GenerateFunctionOutEnv($fn, "r->");
 427         my $result_size = 0;
 428
 429         $self->pidl("static PyObject *$outfnname(struct $fn->{NAME} *r)");
 430         $self->pidl("{");
 431         $self->indent;
 432         $self->pidl("PyObject *result;");
 433         foreach my $e (@{$fn->{ELEMENTS}}) {
 434                 next unless (grep(/out/,@{$e->{DIRECTION}}));
 435                 next if (($metadata_args->{in}->{$e->{NAME}} and grep(/in/, @{$e->{DIRECTION}})) or
 436                          ($metadata_args->{out}->{$e->{NAME}}) and grep(/out/, @{$e->{DIRECTION}}));
 437                 $self->pidl("PyObject *py_$e->{NAME};");
 438                 $result_size++;
 439         }
 440
 441         if ($fn->{RETURN_TYPE}) {
 442                 $result_size++ unless ($fn->{RETURN_TYPE} eq "WERROR" or $fn->{RETURN_TYPE} eq "NTSTATUS");
 443         }
 444
 445         my $i = 0;
 446
 447         if ($result_size > 1) {
 448                 $self->pidl("result = PyTuple_New($result_size);");
 449                 $signature .= "(";
 450         } elsif ($result_size == 0) {
 451                 $self->pidl("result = Py_None;");
 452                 $self->pidl("Py_INCREF(result);");
 453                 $signature .= "None";
 454         }
 455
 456         foreach my $e (@{$fn->{ELEMENTS}}) {
 457                 next if ($metadata_args->{out}->{$e->{NAME}});
 458                 my $py_name = "py_$e->{NAME}";
 459                 if (grep(/out/,@{$e->{DIRECTION}})) {
 460                         $self->ConvertObjectToPython("r", $env, $e, "r->out.$e->{NAME}", $py_name, "return NULL;");
 461                         if ($result_size > 1) {
 462                                 $self->pidl("PyTuple_SetItem(result, $i, $py_name);");
 463                                 $i++;
 464                                 $signature .= "$e->{NAME}, ";
 465                         } else {
 466                                 $self->pidl("result = $py_name;");
 467                                 $signature .= $e->{NAME};
 468                         }
 469                 }
 470         }
 471
 472         if (defined($fn->{RETURN_TYPE}) and $fn->{RETURN_TYPE} eq "NTSTATUS") {
 473                 $self->handle_ntstatus("r->out.result", "NULL", undef);
 474         } elsif (defined($fn->{RETURN_TYPE}) and $fn->{RETURN_TYPE} eq "WERROR") {
 475                 $self->handle_werror("r->out.result", "NULL", undef);
 476         } elsif (defined($fn->{RETURN_TYPE})) {
 477                 my $conv = $self->ConvertObjectToPythonData("r", $fn->{RETURN_TYPE}, "r->out.result", $fn);
 478                 if ($result_size > 1) {
 479                         $self->pidl("PyTuple_SetItem(result, $i, $conv);");
 480                 } else {
 481                         $self->pidl("result = $conv;");
 482                 }
 483                 $signature .= "result";
 484         }
 485
 486         if (substr($signature, -2) eq ", ") {
 487                 $signature = substr($signature, 0, -2);
 488         }
 489         if ($result_size > 1) {
 490                 $signature .= ")";
 491         }
 492
 493         $self->pidl("return result;");
 494         $self->deindent;
 495         $self->pidl("}");
 496         $self->pidl("");
 497
 498         return ($outfnname, $signature);
 499 }
 500
 501 sub PythonFunctionPackIn($$$)
 502 {
 503         my ($self, $fn, $fnname) = @_;
 504         my $metadata_args = find_metadata_args($fn);
 505
 506         my $infnname = "pack_$fnname\_args_in";
 507
 508         $self->pidl("static bool $infnname(PyObject *args, PyObject *kwargs, struct $fn->{NAME} *r)");
 509         $self->pidl("{");
 510         $self->indent;
 511         my $args_format = "";
 512         my $args_string = "";
 513         my $args_names = "";
 514         my $signature = "";
 515
 516         foreach my $e (@{$fn->{ELEMENTS}}) {
 517                 next unless (grep(/in/,@{$e->{DIRECTION}}));
 518                 next if (($metadata_args->{in}->{$e->{NAME}} and grep(/in/, @{$e->{DIRECTION}})) or
 519                                  ($metadata_args->{out}->{$e->{NAME}}) and grep(/out/, @{$e->{DIRECTION}}));
 520                 $self->pidl("PyObject *py_$e->{NAME};");
 521                 $args_format .= "O";
 522                 $args_string .= ", &py_$e->{NAME}";
 523                 $args_names .= "\"$e->{NAME}\", ";
 524                 $signature .= "$e->{NAME}, ";
 525         }
 526         if (substr($signature, -2) eq ", ") {
 527                 $signature = substr($signature, 0, -2);
 528         }
 529         $self->pidl("const char *kwnames[] = {");
 530         $self->indent;
 531         $self->pidl($args_names . "NULL");
 532         $self->deindent;
 533         $self->pidl("};");
 534
 535         $self->pidl("");
 536         $self->pidl("if (!PyArg_ParseTupleAndKeywords(args, kwargs, \"$args_format:$fn->{NAME}\", discard_const_p(char *, kwnames)$args_string)) {");
 537         $self->indent;
 538         $self->pidl("return false;");
 539         $self->deindent;
 540         $self->pidl("}");
 541         $self->pidl("");
 542
 543         my $env = GenerateFunctionInEnv($fn, "r->");
 544
 545         my $fail = "return false;";
 546         foreach my $e (@{$fn->{ELEMENTS}}) {
 547                 next unless (grep(/in/,@{$e->{DIRECTION}}));
 548                 if ($metadata_args->{in}->{$e->{NAME}}) {
 549                         my $py_var = "py_".$metadata_args->{in}->{$e->{NAME}};
 550                         $self->pidl("PY_CHECK_TYPE(&PyList_Type, $py_var, $fail);");
 551                         my $val = "PyList_GET_SIZE($py_var)";
 552                         if ($e->{LEVELS}[0]->{TYPE} eq "POINTER") {
 553                                 $self->pidl("r->in.$e->{NAME} = talloc_ptrtype(r, r->in.$e->{NAME});");
 554                                 $self->pidl("*r->in.$e->{NAME} = $val;");
 555                         } else {
 556                                 $self->pidl("r->in.$e->{NAME} = $val;");
 557                         }
 558                 } else {
 559                         $self->ConvertObjectFromPython($env, "r", $e, "py_$e->{NAME}", "r->in.$e->{NAME}", $fail);
 560                 }
 561         }
 562         $self->pidl("return true;");
 563         $self->deindent;
 564         $self->pidl("}");
 565         $self->pidl("");
 566         return ($infnname, $signature);
 567 }
 568
 569 sub PythonFunction($$$)
 570 {
 571         my ($self, $fn, $iface, $prettyname) = @_;
 572
 573         my $fnname = "py_$fn->{NAME}";
 574         my $docstring = $self->DocString($fn, $fn->{NAME});
 575
 576         my ($infn, $insignature) = $self->PythonFunctionPackIn($fn, $fnname);
 577         my ($outfn, $outsignature) = $self->PythonFunctionUnpackOut($fn, $fnname);
 578         my $signature = "S.$prettyname($insignature) -> $outsignature";
 579         if ($docstring) {
 580                 $docstring = "\"$signature\\n\\n\"$docstring";
 581         } else {
 582                 $docstring = "\"$signature\"";
 583         }
 584
 585         return ($infn, $outfn, $docstring);
 586 }
 587
 588 sub handle_werror($$$$)
 589 {
 590         my ($self, $var, $retval, $mem_ctx) = @_;
 591
 592         $self->pidl("if (!W_ERROR_IS_OK($var)) {");
 593         $self->indent;
 594         $self->pidl("PyErr_SetWERROR($var);");
 595         $self->pidl("talloc_free($mem_ctx);") if ($mem_ctx);
 596         $self->pidl("return $retval;");
 597         $self->deindent;
 598         $self->pidl("}");
 599         $self->pidl("");
 600 }
 601
 602 sub handle_ntstatus($$$$)
 603 {
 604         my ($self, $var, $retval, $mem_ctx) = @_;
 605
 606         $self->pidl("if (NT_STATUS_IS_ERR($var)) {");
 607         $self->indent;
 608         $self->pidl("PyErr_SetNTSTATUS($var);");
 609         $self->pidl("talloc_free($mem_ctx);") if ($mem_ctx);
 610         $self->pidl("return $retval;");
 611         $self->deindent;
 612         $self->pidl("}");
 613         $self->pidl("");
 614 }
 615
 616 sub PythonType($$$$)
 617 {
 618         my ($self, $modulename, $d, $interface, $basename) = @_;
 619
 620         my $actual_ctype = $d;
 621         if ($actual_ctype->{TYPE} eq "TYPEDEF") {
 622                 $actual_ctype = $actual_ctype->{DATA};
 623         }
 624
 625         if ($actual_ctype->{TYPE} eq "STRUCT") {
 626                 my $typeobject;
 627                 my $fn_name = PrettifyTypeName($d->{NAME}, $basename);
 628
 629                 if ($d->{TYPE} eq "STRUCT") {
 630                         $typeobject = $self->PythonStruct($modulename, $fn_name, $d->{NAME}, mapTypeName($d), $d);
 631                 } else {
 632                         $typeobject = $self->PythonStruct($modulename, $fn_name, $d->{NAME}, mapTypeName($d), $d->{DATA});
 633                 }
 634
 635                 $self->register_module_typeobject($fn_name, $typeobject);
 636         }
 637
 638         if ($d->{TYPE} eq "ENUM" or $d->{TYPE} eq "BITMAP") {
 639                 $self->EnumAndBitmapConsts($d->{NAME}, $d);
 640         }
 641
 642         if ($d->{TYPE} eq "TYPEDEF" and ($d->{DATA}->{TYPE} eq "ENUM" or $d->{DATA}->{TYPE} eq "BITMAP")) {
 643                 $self->EnumAndBitmapConsts($d->{NAME}, $d->{DATA});
 644         }
 645
 646         if ($actual_ctype->{TYPE} eq "UNION" and defined($actual_ctype->{ELEMENTS})) {
 647                 $self->pidl("PyObject *py_import_$d->{NAME}(TALLOC_CTX *mem_ctx, int level, " .mapTypeName($d) . " *in)");
 648                 $self->pidl("{");
 649                 $self->indent;
 650                 $self->FromUnionToPythonFunction("mem_ctx", $actual_ctype, "level", "in") if ($actual_ctype->{TYPE} eq "UNION");
 651                 $self->deindent;
 652                 $self->pidl("}");
 653                 $self->pidl("");
 654
 655                 $self->pidl(mapTypeName($d) . " *py_export_$d->{NAME}(TALLOC_CTX *mem_ctx, int level, PyObject *in)");
 656                 $self->pidl("{");
 657                 $self->indent;
 658                 $self->FromPythonToUnionFunction($actual_ctype, mapTypeName($d), "level", "mem_ctx", "in") if ($actual_ctype->{TYPE} eq "UNION");
 659                 $self->deindent;
 660                 $self->pidl("}");
 661                 $self->pidl("");
 662         }
 663 }
 664
 665 sub DocString($$$)
 666 {
 667         my ($self, $d, $name) = @_;
 668         if (has_property($d, "helpstring")) {
 669                 my $docstring = uc("py_doc_$name");
 670                 $self->pidl("#define $docstring ".has_property($d, "helpstring"));
 671                 return $docstring;
 672         }
 673
 674         return undef;
 675 }
 676
 677 sub Interface($$$)
 678 {
 679         my($self,$interface,$basename) = @_;
 680
 681         if (has_property($interface, "pyhelper")) {
 682                 $self->pidl("#include \"".unmake_str($interface->{PROPERTIES}->{pyhelper})."\"\n");
 683         }
 684
 685         $self->Const($_) foreach (@{$interface->{CONSTS}});
 686
 687         foreach my $d (@{$interface->{TYPES}}) {
 688                 next if has_property($d, "nopython");
 689
 690                 $self->PythonType($basename, $d, $interface, $basename);
 691         }
 692
 693         if (defined $interface->{PROPERTIES}->{uuid}) {
 694                 $self->pidl_hdr("static PyTypeObject $interface->{NAME}_InterfaceType;\n");
 695                 $self->pidl("");
 696
 697                 my @fns = ();
 698
 699                 foreach my $d (@{$interface->{FUNCTIONS}}) {
 700                         next if has_property($d, "noopnum");
 701                         next if has_property($d, "nopython");
 702                         next if has_property($d, "todo");
 703
 704                         my $skip = 0;
 705                         foreach my $e (@{$d->{ELEMENTS}}) {
 706                                 if (ContainsPipe($e, $e->{LEVELS}[0])) {
 707                                         $skip = 1;
 708                                         last;
 709                                 }
 710                         }
 711                         next if $skip;
 712
 713                         my $prettyname = $d->{NAME};
 714
 715                         $prettyname =~ s/^$interface->{NAME}_//;
 716                         $prettyname =~ s/^$basename\_//;
 717
 718                         my ($infn, $outfn, $fndocstring) = $self->PythonFunction($d, $interface->{NAME}, $prettyname);
 719
 720                         push (@fns, [$infn, $outfn, "dcerpc_$d->{NAME}_r", $prettyname, $fndocstring, $d->{OPNUM}]);
 721                 }
 722
 723                 $self->pidl("const struct PyNdrRpcMethodDef py_ndr_$interface->{NAME}\_methods[] = {");
 724                 $self->indent;
 725                 foreach my $d (@fns) {
 726                         my ($infn, $outfn, $callfn, $prettyname, $docstring, $opnum) = @$d;
 727                         $self->pidl("{ \"$prettyname\", $docstring, (py_dcerpc_call_fn)$callfn, (py_data_pack_fn)$infn, (py_data_unpack_fn)$outfn, $opnum, &ndr_table_$interface->{NAME} },");
 728                 }
 729                 $self->pidl("{ NULL }");
 730                 $self->deindent;
 731                 $self->pidl("};");
 732                 $self->pidl("");
 733
 734                 $self->pidl("static PyObject *interface_$interface->{NAME}_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)");
 735                 $self->pidl("{");
 736                 $self->indent;
 737                 $self->pidl("return py_dcerpc_interface_init_helper(type, args, kwargs, &ndr_table_$interface->{NAME});");
 738                 $self->deindent;
 739                 $self->pidl("}");
 740
 741                 $self->pidl("");
 742
 743                 my $signature =
 744 "\"$interface->{NAME}(binding, lp_ctx=None, credentials=None) -> connection\\n\"
 745 \"\\n\"
 746 \"binding should be a DCE/RPC binding string (for example: ncacn_ip_tcp:127.0.0.1)\\n\"
 747 \"lp_ctx should be a path to a smb.conf file or a param.LoadParm object\\n\"
 748 \"credentials should be a credentials.Credentials object.\\n\\n\"";
 749
 750                 my $docstring = $self->DocString($interface, $interface->{NAME});
 751
 752                 if ($docstring) {
 753                         $docstring = "$signature$docstring";
 754                 } else {
 755                         $docstring = $signature;
 756                 }
 757
 758                 my $if_typename = "$interface->{NAME}_InterfaceType";
 759
 760                 $self->pidl("static PyTypeObject $if_typename = {");
 761                 $self->indent;
 762                 $self->pidl("PyObject_HEAD_INIT(NULL) 0,");
 763                 $self->pidl(".tp_name = \"$basename.$interface->{NAME}\",");
 764                 $self->pidl(".tp_basicsize = sizeof(dcerpc_InterfaceObject),");
 765                 $self->pidl(".tp_doc = $docstring,");
 766                 $self->pidl(".tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,");
 767                 $self->pidl(".tp_new = interface_$interface->{NAME}_new,");
 768                 $self->deindent;
 769                 $self->pidl("};");
 770
 771                 $self->pidl("");
 772
 773                 $self->register_module_typeobject($interface->{NAME}, "&$if_typename");
 774                 my $dcerpc_typename = $self->import_type_variable("samba.dcerpc.base", "ClientConnection");
 775                 $self->register_module_prereadycode(["$if_typename.tp_base = $dcerpc_typename;", ""]);
 776                 $self->register_module_postreadycode(["if (!PyInterface_AddNdrRpcMethods(&$if_typename, py_ndr_$interface->{NAME}\_methods))", "\treturn;", ""]);
 777
 778
 779                 $self->pidl("static PyObject *syntax_$interface->{NAME}_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)");
 780                 $self->pidl("{");
 781                 $self->indent;
 782                 $self->pidl("return py_dcerpc_syntax_init_helper(type, args, kwargs, &ndr_table_$interface->{NAME}.syntax_id);");
 783                 $self->deindent;
 784                 $self->pidl("}");
 785
 786                 $self->pidl("");
 787
 788                 my $signature = "\"abstract_syntax()\\n\"";
 789
 790                 my $docstring = $self->DocString($interface, $interface->{NAME}."_syntax");
 791
 792                 if ($docstring) {
 793                         $docstring = "$signature$docstring";
 794                 } else {
 795                         $docstring = $signature;
 796                 }
 797
 798                 my $syntax_typename = "$interface->{NAME}_SyntaxType";
 799
 800                 $self->pidl("static PyTypeObject $syntax_typename = {");
 801                 $self->indent;
 802                 $self->pidl("PyObject_HEAD_INIT(NULL) 0,");
 803                 $self->pidl(".tp_name = \"$basename.$interface->{NAME}\",");
 804                 $self->pidl(".tp_basicsize = sizeof(pytalloc_Object),");
 805                 $self->pidl(".tp_doc = $docstring,");
 806                 $self->pidl(".tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,");
 807                 $self->pidl(".tp_new = syntax_$interface->{NAME}_new,");
 808                 $self->deindent;
 809                 $self->pidl("};");
 810
 811                 $self->pidl("");
 812
 813                 $self->register_module_typeobject("abstract_syntax", "&$syntax_typename");
 814                 my $ndr_typename = $self->import_type_variable("samba.dcerpc.misc", "ndr_syntax_id");
 815                 $self->register_module_prereadycode(["$syntax_typename.tp_base = $ndr_typename;", ""]);
 816         }
 817
 818         $self->pidl_hdr("\n");
 819 }
 820
 821 sub register_module_method($$$$$)
 822 {
 823         my ($self, $fn_name, $pyfn_name, $flags, $doc) = @_;
 824
 825         push (@{$self->{module_methods}}, [$fn_name, $pyfn_name, $flags, $doc])
 826 }
 827
 828 sub register_module_typeobject($$$)
 829 {
 830         my ($self, $name, $py_name) = @_;
 831
 832         $self->register_module_object($name, "(PyObject *)(void *)$py_name");
 833
 834         $self->check_ready_type($py_name);
 835
 836         $self->register_patch_type_call($name, $py_name);
 837 }
 838
 839 sub check_ready_type($$)
 840 {
 841         my ($self, $py_name) = @_;
 842         push (@{$self->{ready_types}}, $py_name) unless (grep(/^$py_name$/,@{$self->{ready_types}}));
 843 }
 844
 845 sub register_module_import($$)
 846 {
 847         my ($self, $module_path) = @_;
 848
 849         my $var_name = $module_path;
 850         $var_name =~ s/\./_/g;
 851         $var_name = "dep_$var_name";
 852
 853         unless (defined $self->{module_imports_uniq}->{$var_name}) {
 854                 my $h = { "key" => $var_name, "val" => $module_path};
 855                 push @{$self->{module_imports}}, $h;
 856                 $self->{module_imports_uniq}->{$var_name} = $h;
 857         }
 858         return $var_name;
 859 }
 860
 861 sub import_type_variable($$$)
 862 {
 863         my ($self, $module, $name) = @_;
 864
 865         $self->register_module_import($module);
 866         unless (defined $self->{type_imports_uniq}->{$name}) {
 867                 my $h = { "key" => $name, "val" => $module};
 868                 push @{$self->{type_imports}}, $h;
 869                 $self->{type_imports_uniq}->{$name} = $h;
 870         }
 871         return "$name\_Type";
 872 }
 873
 874 sub use_type_variable($$)
 875 {
 876         my ($self, $orig_ctype) = @_;
 877         # FIXME: Have a global lookup table for types that look different on the
 878         # wire than they are named in C?
 879         if ($orig_ctype->{NAME} eq "dom_sid2" or
 880             $orig_ctype->{NAME} eq "dom_sid28" or
 881             $orig_ctype->{NAME} eq "dom_sid0") {
 882                 $orig_ctype->{NAME} = "dom_sid";
 883         }
 884         if ($orig_ctype->{NAME} eq "spoolss_security_descriptor") {
 885                 $orig_ctype->{NAME} = "security_descriptor";
 886         }
 887
 888         my $ctype = resolveType($orig_ctype);
 889         unless (defined($ctype->{BASEFILE})) {
 890                 return undef;
 891         }
 892         # If this is an external type, make sure we do the right imports.
 893         if (($ctype->{BASEFILE} ne $self->{BASENAME})) {
 894                 return $self->import_type_variable("samba.dcerpc.$ctype->{BASEFILE}", $ctype->{NAME});
 895         }
 896         return "&$ctype->{NAME}_Type";
 897 }
 898
 899 sub register_patch_type_call($$$)
 900 {
 901         my ($self, $typename, $cvar) = @_;
 902
 903         push(@{$self->{patch_type_calls}}, [$typename, $cvar]);
 904
 905 }
 906
 907 sub register_module_prereadycode($$)
 908 {
 909         my ($self, $code) = @_;
 910
 911         push (@{$self->{prereadycode}}, @$code);
 912 }
 913
 914 sub register_module_postreadycode($$)
 915 {
 916         my ($self, $code) = @_;
 917
 918         push (@{$self->{postreadycode}}, @$code);
 919 }
 920
 921 sub register_module_object($$$)
 922 {
 923         my ($self, $name, $py_name) = @_;
 924
 925         push (@{$self->{module_objects}}, [$name, $py_name])
 926 }
 927
 928 sub assign($$$)
 929 {
 930         my ($self, $dest, $src) = @_;
 931         if ($dest =~ /^\&/ and $src eq "NULL") {
 932                 $self->pidl("memset($dest, 0, sizeof(" . get_value_of($dest) . "));");
 933         } elsif ($dest =~ /^\&/) {
 934                 my $destvar = get_value_of($dest);
 935                 $self->pidl("$destvar = *$src;");
 936         } else {
 937                 $self->pidl("$dest = $src;");
 938         }
 939 }
 940
 941 sub ConvertObjectFromPythonData($$$$$$;$)
 942 {
 943         my ($self, $mem_ctx, $cvar, $ctype, $target, $fail, $location) = @_;
 944
 945         fatal($location, "undef type for $cvar") unless(defined($ctype));
 946
 947         $ctype = resolveType($ctype);
 948
 949         my $actual_ctype = $ctype;
 950         if ($actual_ctype->{TYPE} eq "TYPEDEF") {
 951                 $actual_ctype = $actual_ctype->{DATA};
 952         }
 953
 954         if ($actual_ctype->{TYPE} eq "ENUM" or $actual_ctype->{TYPE} eq "BITMAP") {
 955                 $self->pidl("if (PyLong_Check($cvar)) {");
 956                 $self->indent;
 957                 $self->pidl("$target = PyLong_AsLongLong($cvar);");
 958                 $self->deindent;
 959                 $self->pidl("} else if (PyInt_Check($cvar)) {");
 960                 $self->indent;
 961                 $self->pidl("$target = PyInt_AsLong($cvar);");
 962                 $self->deindent;
 963                 $self->pidl("} else {");
 964                 $self->indent;
 965                 $self->pidl("PyErr_Format(PyExc_TypeError, \"Expected type %s or %s\",\\");
 966                 $self->pidl("  PyInt_Type.tp_name, PyLong_Type.tp_name);");
 967                 $self->pidl($fail);
 968                 $self->deindent;
 969                 $self->pidl("}");
 970                 return;
 971         }
 972         if ($actual_ctype->{TYPE} eq "SCALAR" ) {
 973                 if (expandAlias($actual_ctype->{NAME}) =~ /^(u?int64|hyper|dlong|udlong|udlongr|NTTIME_hyper|NTTIME|NTTIME_1sec)$/) {
 974                         $self->pidl("if (PyLong_Check($cvar)) {");
 975                         $self->indent;
 976                         $self->pidl("$target = PyLong_AsLongLong($cvar);");
 977                         $self->deindent;
 978                         $self->pidl("} else if (PyInt_Check($cvar)) {");
 979                         $self->indent;
 980                         $self->pidl("$target = PyInt_AsLong($cvar);");
 981                         $self->deindent;
 982                         $self->pidl("} else {");
 983                         $self->indent;
 984                         $self->pidl("PyErr_Format(PyExc_TypeError, \"Expected type %s or %s\",\\");
 985                         $self->pidl("  PyInt_Type.tp_name, PyLong_Type.tp_name);");
 986                         $self->pidl($fail);
 987                         $self->deindent;
 988                         $self->pidl("}");
 989                         return;
 990                 }
 991                 if (expandAlias($actual_ctype->{NAME}) =~ /^(char|u?int[0-9]*|time_t|uid_t|gid_t)$/) {
 992                         $self->pidl("PY_CHECK_TYPE(&PyInt_Type, $cvar, $fail);");
 993                         $self->pidl("$target = PyInt_AsLong($cvar);");
 994                         return;
 995                 }
 996         }
 997
 998         if ($actual_ctype->{TYPE} eq "STRUCT" or $actual_ctype->{TYPE} eq "INTERFACE") {
 999                 my $ctype_name = $self->use_type_variable($ctype);
1000                 unless (defined ($ctype_name)) {
1001                         error($location, "Unable to determine origin of type `" . mapTypeName($ctype) . "'");
1002                         $self->pidl("PyErr_SetString(PyExc_TypeError, \"Can not convert C Type " . mapTypeName($ctype) . " from Python\");");
1003                         return;
1004                 }
1005                 $self->pidl("PY_CHECK_TYPE($ctype_name, $cvar, $fail);");
1006                 $self->pidl("if (talloc_reference($mem_ctx, pytalloc_get_mem_ctx($cvar)) == NULL) {");
1007                 $self->indent;
1008                 $self->pidl("PyErr_NoMemory();");
1009                 $self->pidl("$fail");
1010                 $self->deindent;
1011                 $self->pidl("}");
1012                 $self->assign($target, "(".mapTypeName($ctype)." *)pytalloc_get_ptr($cvar)");
1013                 return;
1014         }
1015
1016         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "DATA_BLOB") {
1017                 $self->pidl("$target = data_blob_talloc($mem_ctx, PyString_AS_STRING($cvar), PyString_GET_SIZE($cvar));");
1018                 return;
1019         }
1020
1021         if ($actual_ctype->{TYPE} eq "SCALAR" and
1022                 ($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")) {
1023                 $self->pidl("$target = talloc_strdup($mem_ctx, PyString_AS_STRING($cvar));");
1024                 return;
1025         }
1026
1027         if ($actual_ctype->{TYPE} eq "SCALAR" and ($actual_ctype->{NAME} eq "dns_string" or $actual_ctype->{NAME} eq "dns_name")) {
1028                 $self->pidl("$target = talloc_strdup($mem_ctx, PyString_AS_STRING($cvar));");
1029                 return;
1030         }
1031
1032         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "ipv4address") {
1033                 $self->pidl("$target = PyString_AS_STRING($cvar);");
1034                 return;
1035         }
1036
1037         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "ipv6address") {
1038                 $self->pidl("$target = PyString_AsString($cvar);");
1039                 return;
1040         }
1041
1042         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "dnsp_name") {
1043                 $self->pidl("$target = PyString_AS_STRING($cvar);");
1044                 return;
1045         }
1046
1047         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "dnsp_string") {
1048                 $self->pidl("$target = PyString_AS_STRING($cvar);");
1049                 return;
1050         }
1051
1052         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "NTSTATUS") {
1053                 $self->pidl("$target = NT_STATUS(PyInt_AsLong($cvar));");
1054                 return;
1055         }
1056
1057         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "WERROR") {
1058                 $self->pidl("$target = W_ERROR(PyInt_AsLong($cvar));");
1059                 return;
1060         }
1061
1062         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "HRESULT") {
1063                 $self->pidl("$target = HRES_ERROR(PyInt_AsLong($cvar));");
1064                 return;
1065         }
1066
1067         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "string_array") {
1068                 $self->pidl("$target = PyCObject_AsVoidPtr($cvar);");
1069                 return;
1070         }
1071
1072         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "pointer") {
1073                 $self->assign($target, "PyCObject_AsVoidPtr($cvar)");
1074                 return;
1075         }
1076
1077         fatal($location, "unknown type `$actual_ctype->{TYPE}' for ".mapTypeName($ctype) . ": $cvar");
1078
1079 }
1080
1081 sub ConvertObjectFromPythonLevel($$$$$$$$)
1082 {
1083         my ($self, $env, $mem_ctx, $py_var, $e, $l, $var_name, $fail) = @_;
1084         my $nl = GetNextLevel($e, $l);
1085         if ($nl and $nl->{TYPE} eq "SUBCONTEXT") {
1086                 $nl = GetNextLevel($e, $nl);
1087         }
1088         my $pl = GetPrevLevel($e, $l);
1089         if ($pl and $pl->{TYPE} eq "SUBCONTEXT") {
1090                 $pl = GetPrevLevel($e, $pl);
1091         }
1092
1093         if ($l->{TYPE} eq "POINTER") {
1094                 if ($l->{POINTER_TYPE} ne "ref") {
1095                         $self->pidl("if ($py_var == Py_None) {");
1096                         $self->indent;
1097                         $self->pidl("$var_name = NULL;");
1098                         $self->deindent;
1099                         $self->pidl("} else {");
1100                         $self->indent;
1101                 }
1102                 # if we want to handle more than one level of pointer in python interfaces
1103                 # then this is where we would need to allocate it
1104                 if ($l->{POINTER_TYPE} eq "ref") {
1105                         $self->pidl("$var_name = talloc_ptrtype($mem_ctx, $var_name);");
1106                 } elsif ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::is_scalar($nl->{DATA_TYPE})
1107                          and not Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE})) {
1108                         $self->pidl("$var_name = talloc_ptrtype($mem_ctx, $var_name);");
1109                 } else {
1110                         $self->pidl("$var_name = NULL;");
1111                 }
1112                 unless ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE})) {
1113                         $var_name = get_value_of($var_name);
1114                 }
1115                 $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $py_var, $e, $nl, $var_name, $fail);
1116                 if ($l->{POINTER_TYPE} ne "ref") {
1117                         $self->deindent;
1118                         $self->pidl("}");
1119                 }
1120         } elsif ($l->{TYPE} eq "ARRAY") {
1121                 if ($pl && $pl->{TYPE} eq "POINTER") {
1122                         $var_name = get_pointer_to($var_name);
1123                 }
1124
1125                 if (is_charset_array($e, $l)) {
1126                         $self->pidl("if (PyUnicode_Check($py_var)) {");
1127                         $self->indent;
1128                         # FIXME: Use Unix charset setting rather than utf-8
1129                         $self->pidl($var_name . " = PyString_AS_STRING(PyUnicode_AsEncodedString($py_var, \"utf-8\", \"ignore\"));");
1130                         $self->deindent;
1131                         $self->pidl("} else if (PyString_Check($py_var)) {");
1132                         $self->indent;
1133                         $self->pidl($var_name . " = PyString_AS_STRING($py_var);");
1134                         $self->deindent;
1135                         $self->pidl("} else {");
1136                         $self->indent;
1137                         $self->pidl("PyErr_Format(PyExc_TypeError, \"Expected string or unicode object, got %s\", Py_TYPE($py_var)->tp_name);");
1138                         $self->pidl("$fail");
1139                         $self->deindent;
1140                         $self->pidl("}");
1141                 } else {
1142                         my $counter = "$e->{NAME}_cntr_$l->{LEVEL_INDEX}";
1143                         $self->pidl("PY_CHECK_TYPE(&PyList_Type, $py_var, $fail);");
1144                         $self->pidl("{");
1145                         $self->indent;
1146                         $self->pidl("int $counter;");
1147                         if (ArrayDynamicallyAllocated($e, $l)) {
1148                                 $self->pidl("$var_name = talloc_array_ptrtype($mem_ctx, $var_name, PyList_GET_SIZE($py_var));");
1149                                 $self->pidl("if (!$var_name) { $fail; }");
1150                                 $self->pidl("talloc_set_name_const($var_name, \"ARRAY: $var_name\");");
1151                         }
1152                         $self->pidl("for ($counter = 0; $counter < PyList_GET_SIZE($py_var); $counter++) {");
1153                         $self->indent;
1154                         $self->ConvertObjectFromPythonLevel($env, $var_name, "PyList_GET_ITEM($py_var, $counter)", $e, $nl, $var_name."[$counter]", $fail);
1155                         $self->deindent;
1156                         $self->pidl("}");
1157                         $self->deindent;
1158                         $self->pidl("}");
1159                 }
1160         } elsif ($l->{TYPE} eq "DATA") {
1161                 if (not Parse::Pidl::Typelist::is_scalar($l->{DATA_TYPE})) {
1162                         $var_name = get_pointer_to($var_name);
1163                 }
1164                 $self->ConvertObjectFromPythonData($mem_ctx, $py_var, $l->{DATA_TYPE}, $var_name, $fail, $e->{ORIGINAL});
1165         } elsif ($l->{TYPE} eq "SWITCH") {
1166                 $var_name = get_pointer_to($var_name);
1167                 my $switch = ParseExpr($l->{SWITCH_IS}, $env, $e);
1168                 my $switch_ptr = "$e->{NAME}_switch_$l->{LEVEL_INDEX}";
1169                 $self->pidl("{");
1170                 $self->indent;
1171                 my $union_type = mapTypeName($nl->{DATA_TYPE});
1172                 $self->pidl("$union_type *$switch_ptr;");
1173                 $self->pidl("$switch_ptr = py_export_" . $nl->{DATA_TYPE} . "($mem_ctx, $switch, $py_var);");
1174                 $self->fail_on_null($switch_ptr, $fail);
1175                 $self->assign($var_name, "$switch_ptr");
1176                 $self->deindent;
1177                 $self->pidl("}");
1178         } elsif ($l->{TYPE} eq "SUBCONTEXT") {
1179                 $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $py_var, $e, $nl, $var_name, $fail);
1180         } else {
1181                 fatal($e->{ORIGINAL}, "unknown level type $l->{TYPE}");
1182         }
1183 }
1184
1185 sub ConvertObjectFromPython($$$$$$$)
1186 {
1187         my ($self, $env, $mem_ctx, $ctype, $cvar, $target, $fail) = @_;
1188
1189         $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $cvar, $ctype, $ctype->{LEVELS}[0], $target, $fail);
1190 }
1191
1192 sub ConvertScalarToPython($$$)
1193 {
1194         my ($self, $ctypename, $cvar) = @_;
1195
1196         die("expected string for $cvar, not $ctypename") if (ref($ctypename) eq "HASH");
1197
1198         $ctypename = expandAlias($ctypename);
1199
1200         if ($ctypename =~ /^(u?int64|hyper|dlong|udlong|udlongr|NTTIME_hyper|NTTIME|NTTIME_1sec)$/) {
1201                 return "PyLong_FromLongLong($cvar)";
1202         }
1203
1204         if ($ctypename =~ /^(char|u?int[0-9]*|time_t|uid_t|gid_t)$/) {
1205                 return "PyInt_FromLong($cvar)";
1206         }
1207
1208         if ($ctypename eq "DATA_BLOB") {
1209                 return "PyString_FromStringAndSize((char *)($cvar).data, ($cvar).length)";
1210         }
1211
1212         if ($ctypename eq "NTSTATUS") {
1213                 return "PyErr_FromNTSTATUS($cvar)";
1214         }
1215
1216         if ($ctypename eq "WERROR") {
1217                 return "PyErr_FromWERROR($cvar)";
1218         }
1219
1220         if ($ctypename eq "HRESULT") {
1221                 return "PyErr_FromHRESULT($cvar)";
1222         }
1223
1224         if (($ctypename eq "string" or $ctypename eq "nbt_string" or $ctypename eq "nbt_name" or $ctypename eq "wrepl_nbt_name")) {
1225                 return "PyString_FromStringOrNULL($cvar)";
1226         }
1227
1228         if (($ctypename eq "dns_string" or $ctypename eq "dns_name")) {
1229                 return "PyString_FromStringOrNULL($cvar)";
1230         }
1231
1232         # Not yet supported
1233         if ($ctypename eq "string_array") { return "pytalloc_CObject_FromTallocPtr($cvar)"; }
1234         if ($ctypename eq "ipv4address") { return "PyString_FromStringOrNULL($cvar)"; }
1235         if ($ctypename eq "ipv6address") { return "PyString_FromStringOrNULL($cvar)"; }
1236         if ($ctypename eq "dnsp_name") { return "PyString_FromStringOrNULL($cvar)"; }
1237         if ($ctypename eq "dnsp_string") { return "PyString_FromStringOrNULL($cvar)"; }
1238         if ($ctypename eq "pointer") {
1239                 return "pytalloc_CObject_FromTallocPtr($cvar)";
1240         }
1241
1242         die("Unknown scalar type $ctypename");
1243 }
1244
1245 sub ConvertObjectToPythonData($$$$$;$)
1246 {
1247         my ($self, $mem_ctx, $ctype, $cvar, $location) = @_;
1248
1249         die("undef type for $cvar") unless(defined($ctype));
1250
1251         $ctype = resolveType($ctype);
1252
1253         my $actual_ctype = $ctype;
1254         if ($actual_ctype->{TYPE} eq "TYPEDEF") {
1255                 $actual_ctype = $actual_ctype->{DATA};
1256         }
1257
1258         if ($actual_ctype->{TYPE} eq "ENUM") {
1259                 return $self->ConvertScalarToPython(Parse::Pidl::Typelist::enum_type_fn($actual_ctype), $cvar);
1260         } elsif ($actual_ctype->{TYPE} eq "BITMAP") {
1261                 return $self->ConvertScalarToPython(Parse::Pidl::Typelist::bitmap_type_fn($actual_ctype), $cvar);
1262         } elsif ($actual_ctype->{TYPE} eq "SCALAR") {
1263                 return $self->ConvertScalarToPython($actual_ctype->{NAME}, $cvar);
1264         } elsif ($actual_ctype->{TYPE} eq "UNION") {
1265                 fatal($ctype, "union without discriminant: " . mapTypeName($ctype) . ": $cvar");
1266         } elsif ($actual_ctype->{TYPE} eq "STRUCT" or $actual_ctype->{TYPE} eq "INTERFACE") {
1267                 my $ctype_name = $self->use_type_variable($ctype);
1268                 unless (defined($ctype_name)) {
1269                         error($location, "Unable to determine origin of type `" . mapTypeName($ctype) . "'");
1270                         return "NULL"; # FIXME!
1271                 }
1272                 return "pytalloc_reference_ex($ctype_name, $mem_ctx, $cvar)";
1273         }
1274
1275         fatal($location, "unknown type $actual_ctype->{TYPE} for ".mapTypeName($ctype) . ": $cvar");
1276 }
1277
1278 sub fail_on_null($$$)
1279 {
1280         my ($self, $var, $fail) = @_;
1281         $self->pidl("if ($var == NULL) {");
1282         $self->indent;
1283         $self->pidl($fail);
1284         $self->deindent;
1285         $self->pidl("}");
1286 }
1287
1288 sub ConvertObjectToPythonLevel($$$$$$)
1289 {
1290         my ($self, $mem_ctx, $env, $e, $l, $var_name, $py_var, $fail) = @_;
1291         my $nl = GetNextLevel($e, $l);
1292         if ($nl and $nl->{TYPE} eq "SUBCONTEXT") {
1293                 $nl = GetNextLevel($e, $nl);
1294         }
1295         my $pl = GetPrevLevel($e, $l);
1296         if ($pl and $pl->{TYPE} eq "SUBCONTEXT") {
1297                 $pl = GetPrevLevel($e, $pl);
1298         }
1299
1300         if ($l->{TYPE} eq "POINTER") {
1301                 if ($l->{POINTER_TYPE} ne "ref") {
1302                         $self->pidl("if ($var_name == NULL) {");
1303                         $self->indent;
1304                         $self->pidl("$py_var = Py_None;");
1305                         $self->pidl("Py_INCREF($py_var);");
1306                         $self->deindent;
1307                         $self->pidl("} else {");
1308                         $self->indent;
1309                 }
1310                 my $var_name2 = $var_name;
1311                 unless ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE})) {
1312                         $var_name2 = get_value_of($var_name);
1313                 }
1314                 $self->ConvertObjectToPythonLevel($var_name, $env, $e, $nl, $var_name2, $py_var, $fail);
1315                 if ($l->{POINTER_TYPE} ne "ref") {
1316                         $self->deindent;
1317                         $self->pidl("}");
1318                 }
1319         } elsif ($l->{TYPE} eq "ARRAY") {
1320                 if ($pl && $pl->{TYPE} eq "POINTER") {
1321                         $var_name = get_pointer_to($var_name);
1322                 }
1323
1324                 if (is_charset_array($e, $l)) {
1325                         # FIXME: Use Unix charset setting rather than utf-8
1326                         $self->pidl("if ($var_name == NULL) {");
1327                         $self->indent;
1328                         $self->pidl("$py_var = Py_None;");
1329                         $self->pidl("Py_INCREF($py_var);");
1330                         $self->deindent;
1331                         $self->pidl("} else {");
1332                         $self->indent;
1333                         $self->pidl("$py_var = PyUnicode_Decode($var_name, strlen($var_name), \"utf-8\", \"ignore\");");
1334                         $self->deindent;
1335                         $self->pidl("}");
1336                 } else {
1337                         die("No SIZE_IS for array $var_name") unless (defined($l->{SIZE_IS}));
1338                         my $length = $l->{SIZE_IS};
1339                         if (defined($l->{LENGTH_IS})) {
1340                                 $length = $l->{LENGTH_IS};
1341                         }
1342
1343                         $length = ParseExpr($length, $env, $e);
1344                         $self->pidl("$py_var = PyList_New($length);");
1345                         $self->fail_on_null($py_var, $fail);
1346                         $self->pidl("{");
1347                         $self->indent;
1348                         my $counter = "$e->{NAME}_cntr_$l->{LEVEL_INDEX}";
1349                         $self->pidl("int $counter;");
1350                         $self->pidl("for ($counter = 0; $counter < $length; $counter++) {");
1351                         $self->indent;
1352                         my $member_var = "py_$e->{NAME}_$l->{LEVEL_INDEX}";
1353                         $self->pidl("PyObject *$member_var;");
1354                         $self->ConvertObjectToPythonLevel($var_name, $env, $e, $nl, $var_name."[$counter]", $member_var, $fail);
1355                         $self->pidl("PyList_SetItem($py_var, $counter, $member_var);");
1356                         $self->deindent;
1357                         $self->pidl("}");
1358                         $self->deindent;
1359                         $self->pidl("}");
1360                 }
1361         } elsif ($l->{TYPE} eq "SWITCH") {
1362                 $var_name = get_pointer_to($var_name);
1363                 my $switch = ParseExpr($l->{SWITCH_IS}, $env, $e);
1364                 $self->pidl("$py_var = py_import_" . $nl->{DATA_TYPE} . "($mem_ctx, $switch, $var_name);");
1365                 $self->fail_on_null($py_var, $fail);
1366
1367         } elsif ($l->{TYPE} eq "DATA") {
1368                 if (not Parse::Pidl::Typelist::is_scalar($l->{DATA_TYPE})) {
1369                         $var_name = get_pointer_to($var_name);
1370                 }
1371                 my $conv = $self->ConvertObjectToPythonData($mem_ctx, $l->{DATA_TYPE}, $var_name, $e->{ORIGINAL});
1372                 $self->pidl("$py_var = $conv;");
1373         } elsif ($l->{TYPE} eq "SUBCONTEXT") {
1374                 $self->ConvertObjectToPythonLevel($mem_ctx, $env, $e, $nl, $var_name, $py_var, $fail);
1375         } else {
1376                 fatal($e->{ORIGINAL}, "Unknown level type $l->{TYPE} $var_name");
1377         }
1378 }
1379
1380 sub ConvertObjectToPython($$$$$$)
1381 {
1382         my ($self, $mem_ctx, $env, $ctype, $cvar, $py_var, $fail) = @_;
1383
1384         $self->ConvertObjectToPythonLevel($mem_ctx, $env, $ctype, $ctype->{LEVELS}[0], $cvar, $py_var, $fail);
1385 }
1386
1387 sub Parse($$$$$)
1388 {
1389     my($self,$basename,$ndr,$ndr_hdr,$hdr) = @_;
1390
1391         $self->{BASENAME} = $basename;
1392
1393     $self->pidl_hdr("
1394 /* Python wrapper functions auto-generated by pidl */
1395 #include <Python.h>
1396 #include \"includes.h\"
1397 #include <pytalloc.h>
1398 #include \"librpc/rpc/pyrpc.h\"
1399 #include \"librpc/rpc/pyrpc_util.h\"
1400 #include \"$hdr\"
1401 #include \"$ndr_hdr\"
1402
1403 ");
1404
1405         foreach my $x (@$ndr) {
1406                 ($x->{TYPE} eq "IMPORT") && $self->Import(@{$x->{PATHS}});
1407             ($x->{TYPE} eq "INTERFACE") && $self->Interface($x, $basename);
1408         }
1409
1410         $self->pidl("static PyMethodDef $basename\_methods[] = {");
1411         $self->indent;
1412         foreach (@{$self->{module_methods}}) {
1413                 my ($fn_name, $pyfn_name, $flags, $doc) = @$_;
1414                 $self->pidl("{ \"$fn_name\", (PyCFunction)$pyfn_name, $flags, $doc },");
1415         }
1416
1417         $self->pidl("{ NULL, NULL, 0, NULL }");
1418         $self->deindent;
1419         $self->pidl("};");
1420
1421         $self->pidl("");
1422
1423         $self->pidl_hdr("void init$basename(void);");
1424         $self->pidl("void init$basename(void)");
1425         $self->pidl("{");
1426         $self->indent;
1427         $self->pidl("PyObject *m;");
1428         foreach my $h (@{$self->{module_imports}}) {
1429                 $self->pidl("PyObject *$h->{'key'};");
1430         }
1431         $self->pidl("");
1432
1433         foreach my $h (@{$self->{module_imports}}) {
1434                 my $var_name = $h->{'key'};
1435                 my $module_path = $h->{'val'};
1436                 $self->pidl("$var_name = PyImport_ImportModule(\"$module_path\");");
1437                 $self->pidl("if ($var_name == NULL)");
1438                 $self->pidl("\treturn;");
1439                 $self->pidl("");
1440         }
1441
1442         foreach my $h (@{$self->{type_imports}}) {
1443                 my $type_var = "$h->{'key'}\_Type";
1444                 my $module_path = $h->{'val'};
1445                 $self->pidl_hdr("static PyTypeObject *$type_var;\n");
1446                 my $pretty_name = PrettifyTypeName($h->{'key'}, $module_path);
1447                 my $module_var = "dep_$module_path";
1448                 $module_var =~ s/\./_/g;
1449                 $self->pidl("$type_var = (PyTypeObject *)PyObject_GetAttrString($module_var, \"$pretty_name\");");
1450                 $self->pidl("if ($type_var == NULL)");
1451                 $self->pidl("\treturn;");
1452                 $self->pidl("");
1453         }
1454
1455         $self->pidl($_) foreach (@{$self->{prereadycode}});
1456
1457         foreach (@{$self->{ready_types}}) {
1458                 $self->pidl("if (PyType_Ready($_) < 0)");
1459                 $self->pidl("\treturn;");
1460         }
1461
1462         $self->pidl($_) foreach (@{$self->{postreadycode}});
1463
1464         foreach (@{$self->{patch_type_calls}}) {
1465                 my ($typename, $cvar) = @$_;
1466                 $self->pidl("#ifdef PY_".uc($typename)."_PATCH");
1467                 $self->pidl("PY_".uc($typename)."_PATCH($cvar);");
1468                 $self->pidl("#endif");
1469         }
1470
1471         $self->pidl("");
1472
1473         $self->pidl("m = Py_InitModule3(\"$basename\", $basename\_methods, \"$basename DCE/RPC\");");
1474         $self->pidl("if (m == NULL)");
1475         $self->pidl("\treturn;");
1476         $self->pidl("");
1477         foreach my $h (@{$self->{constants}}) {
1478                 my $name = $h->{'key'};
1479                 my $py_obj;
1480                 my ($ctype, $cvar) = @{$h->{'val'}};
1481                 if ($cvar =~ /^[0-9]+$/ or $cvar =~ /^0x[0-9a-fA-F]+$/) {
1482                         $py_obj = "PyInt_FromLong($cvar)";
1483                 } elsif ($cvar =~ /^".*"$/) {
1484                         $py_obj = "PyString_FromString($cvar)";
1485                 } else {
1486                         $py_obj = $self->ConvertObjectToPythonData("NULL", expandAlias($ctype), $cvar, undef);
1487                 }
1488
1489                 $self->pidl("PyModule_AddObject(m, \"$name\", $py_obj);");
1490         }
1491
1492         foreach (@{$self->{module_objects}}) {
1493                 my ($object_name, $c_name) = @$_;
1494                 $self->pidl("Py_INCREF($c_name);");
1495                 $self->pidl("PyModule_AddObject(m, \"$object_name\", $c_name);");
1496         }
1497
1498         $self->pidl("#ifdef PY_MOD_".uc($basename)."_PATCH");
1499         $self->pidl("PY_MOD_".uc($basename)."_PATCH(m);");
1500         $self->pidl("#endif");
1501
1502         $self->pidl("");
1503         $self->deindent;
1504         $self->pidl("}");
1505     return ($self->{res_hdr} . $self->{res});
1506 }
1507
1508 1;