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_hdr("\n");
 774 }
 775
 776 sub register_module_method($$$$$)
 777 {
 778         my ($self, $fn_name, $pyfn_name, $flags, $doc) = @_;
 779
 780         push (@{$self->{module_methods}}, [$fn_name, $pyfn_name, $flags, $doc])
 781 }
 782
 783 sub register_module_typeobject($$$)
 784 {
 785         my ($self, $name, $py_name) = @_;
 786
 787         $self->register_module_object($name, "(PyObject *)(void *)$py_name");
 788
 789         $self->check_ready_type($py_name);
 790
 791         $self->register_patch_type_call($name, $py_name);
 792 }
 793
 794 sub check_ready_type($$)
 795 {
 796         my ($self, $py_name) = @_;
 797         push (@{$self->{ready_types}}, $py_name) unless (grep(/^$py_name$/,@{$self->{ready_types}}));
 798 }
 799
 800 sub register_module_import($$)
 801 {
 802         my ($self, $module_path) = @_;
 803
 804         my $var_name = $module_path;
 805         $var_name =~ s/\./_/g;
 806         $var_name = "dep_$var_name";
 807
 808         $self->{module_imports}->{$var_name} = $module_path;
 809
 810         return $var_name;
 811 }
 812
 813 sub import_type_variable($$$)
 814 {
 815         my ($self, $module, $name) = @_;
 816
 817         $self->register_module_import($module);
 818         unless (defined($self->{type_imports}->{$name})) {
 819                 $self->{type_imports}->{$name} = $module;
 820         }
 821         return "$name\_Type";
 822 }
 823
 824 sub use_type_variable($$)
 825 {
 826         my ($self, $orig_ctype) = @_;
 827         # FIXME: Have a global lookup table for types that look different on the
 828         # wire than they are named in C?
 829         if ($orig_ctype->{NAME} eq "dom_sid2" or
 830             $orig_ctype->{NAME} eq "dom_sid28" or
 831             $orig_ctype->{NAME} eq "dom_sid0") {
 832                 $orig_ctype->{NAME} = "dom_sid";
 833         }
 834         if ($orig_ctype->{NAME} eq "spoolss_security_descriptor") {
 835                 $orig_ctype->{NAME} = "security_descriptor";
 836         }
 837
 838         my $ctype = resolveType($orig_ctype);
 839         unless (defined($ctype->{BASEFILE})) {
 840                 return undef;
 841         }
 842         # If this is an external type, make sure we do the right imports.
 843         if (($ctype->{BASEFILE} ne $self->{BASENAME})) {
 844                 return $self->import_type_variable("samba.dcerpc.$ctype->{BASEFILE}", $ctype->{NAME});
 845         }
 846         return "&$ctype->{NAME}_Type";
 847 }
 848
 849 sub register_patch_type_call($$$)
 850 {
 851         my ($self, $typename, $cvar) = @_;
 852
 853         push(@{$self->{patch_type_calls}}, [$typename, $cvar]);
 854
 855 }
 856
 857 sub register_module_prereadycode($$)
 858 {
 859         my ($self, $code) = @_;
 860
 861         push (@{$self->{prereadycode}}, @$code);
 862 }
 863
 864 sub register_module_postreadycode($$)
 865 {
 866         my ($self, $code) = @_;
 867
 868         push (@{$self->{postreadycode}}, @$code);
 869 }
 870
 871 sub register_module_object($$$)
 872 {
 873         my ($self, $name, $py_name) = @_;
 874
 875         push (@{$self->{module_objects}}, [$name, $py_name])
 876 }
 877
 878 sub assign($$$)
 879 {
 880         my ($self, $dest, $src) = @_;
 881         if ($dest =~ /^\&/ and $src eq "NULL") {
 882                 $self->pidl("memset($dest, 0, sizeof(" . get_value_of($dest) . "));");
 883         } elsif ($dest =~ /^\&/) {
 884                 my $destvar = get_value_of($dest);
 885                 $self->pidl("$destvar = *$src;");
 886         } else {
 887                 $self->pidl("$dest = $src;");
 888         }
 889 }
 890
 891 sub ConvertObjectFromPythonData($$$$$$;$)
 892 {
 893         my ($self, $mem_ctx, $cvar, $ctype, $target, $fail, $location) = @_;
 894
 895         fatal($location, "undef type for $cvar") unless(defined($ctype));
 896
 897         $ctype = resolveType($ctype);
 898
 899         my $actual_ctype = $ctype;
 900         if ($actual_ctype->{TYPE} eq "TYPEDEF") {
 901                 $actual_ctype = $actual_ctype->{DATA};
 902         }
 903
 904         if ($actual_ctype->{TYPE} eq "ENUM" or $actual_ctype->{TYPE} eq "BITMAP") {
 905                 $self->pidl("if (PyLong_Check($cvar)) {");
 906                 $self->indent;
 907                 $self->pidl("$target = PyLong_AsLongLong($cvar);");
 908                 $self->deindent;
 909                 $self->pidl("} else if (PyInt_Check($cvar)) {");
 910                 $self->indent;
 911                 $self->pidl("$target = PyInt_AsLong($cvar);");
 912                 $self->deindent;
 913                 $self->pidl("} else {");
 914                 $self->indent;
 915                 $self->pidl("PyErr_Format(PyExc_TypeError, \"Expected type %s or %s\",\\");
 916                 $self->pidl("  PyInt_Type.tp_name, PyLong_Type.tp_name);");
 917                 $self->pidl($fail);
 918                 $self->deindent;
 919                 $self->pidl("}");
 920                 return;
 921         }
 922         if ($actual_ctype->{TYPE} eq "SCALAR" ) {
 923                 if (expandAlias($actual_ctype->{NAME}) =~ /^(u?int64|hyper|dlong|udlong|udlongr|NTTIME_hyper|NTTIME|NTTIME_1sec)$/) {
 924                         $self->pidl("if (PyLong_Check($cvar)) {");
 925                         $self->indent;
 926                         $self->pidl("$target = PyLong_AsLongLong($cvar);");
 927                         $self->deindent;
 928                         $self->pidl("} else if (PyInt_Check($cvar)) {");
 929                         $self->indent;
 930                         $self->pidl("$target = PyInt_AsLong($cvar);");
 931                         $self->deindent;
 932                         $self->pidl("} else {");
 933                         $self->indent;
 934                         $self->pidl("PyErr_Format(PyExc_TypeError, \"Expected type %s or %s\",\\");
 935                         $self->pidl("  PyInt_Type.tp_name, PyLong_Type.tp_name);");
 936                         $self->pidl($fail);
 937                         $self->deindent;
 938                         $self->pidl("}");
 939                         return;
 940                 }
 941                 if (expandAlias($actual_ctype->{NAME}) =~ /^(char|u?int[0-9]*|time_t|uid_t|gid_t)$/) {
 942                         $self->pidl("PY_CHECK_TYPE(&PyInt_Type, $cvar, $fail);");
 943                         $self->pidl("$target = PyInt_AsLong($cvar);");
 944                         return;
 945                 }
 946         }
 947
 948         if ($actual_ctype->{TYPE} eq "STRUCT" or $actual_ctype->{TYPE} eq "INTERFACE") {
 949                 my $ctype_name = $self->use_type_variable($ctype);
 950                 unless (defined ($ctype_name)) {
 951                         error($location, "Unable to determine origin of type `" . mapTypeName($ctype) . "'");
 952                         $self->pidl("PyErr_SetString(PyExc_TypeError, \"Can not convert C Type " . mapTypeName($ctype) . " from Python\");");
 953                         return;
 954                 }
 955                 $self->pidl("PY_CHECK_TYPE($ctype_name, $cvar, $fail);");
 956                 $self->pidl("if (talloc_reference($mem_ctx, pytalloc_get_mem_ctx($cvar)) == NULL) {");
 957                 $self->indent;
 958                 $self->pidl("PyErr_NoMemory();");
 959                 $self->pidl("$fail");
 960                 $self->deindent;
 961                 $self->pidl("}");
 962                 $self->assign($target, "(".mapTypeName($ctype)." *)pytalloc_get_ptr($cvar)");
 963                 return;
 964         }
 965
 966         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "DATA_BLOB") {
 967                 $self->pidl("$target = data_blob_talloc($mem_ctx, PyString_AS_STRING($cvar), PyString_GET_SIZE($cvar));");
 968                 return;
 969         }
 970
 971         if ($actual_ctype->{TYPE} eq "SCALAR" and
 972                 ($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")) {
 973                 $self->pidl("$target = talloc_strdup($mem_ctx, PyString_AS_STRING($cvar));");
 974                 return;
 975         }
 976
 977         if ($actual_ctype->{TYPE} eq "SCALAR" and ($actual_ctype->{NAME} eq "dns_string" or $actual_ctype->{NAME} eq "dns_name")) {
 978                 $self->pidl("$target = talloc_strdup($mem_ctx, PyString_AS_STRING($cvar));");
 979                 return;
 980         }
 981
 982         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "ipv4address") {
 983                 $self->pidl("$target = PyString_AS_STRING($cvar);");
 984                 return;
 985         }
 986
 987         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "ipv6address") {
 988                 $self->pidl("$target = PyString_AsString($cvar);");
 989                 return;
 990         }
 991
 992         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "dnsp_name") {
 993                 $self->pidl("$target = PyString_AS_STRING($cvar);");
 994                 return;
 995         }
 996
 997         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "dnsp_string") {
 998                 $self->pidl("$target = PyString_AS_STRING($cvar);");
 999                 return;
1000         }
1001
1002         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "NTSTATUS") {
1003                 $self->pidl("$target = NT_STATUS(PyInt_AsLong($cvar));");
1004                 return;
1005         }
1006
1007         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "WERROR") {
1008                 $self->pidl("$target = W_ERROR(PyInt_AsLong($cvar));");
1009                 return;
1010         }
1011
1012         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "string_array") {
1013                 $self->pidl("$target = PyCObject_AsVoidPtr($cvar);");
1014                 return;
1015         }
1016
1017         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "pointer") {
1018                 $self->assign($target, "PyCObject_AsVoidPtr($cvar)");
1019                 return;
1020         }
1021
1022         fatal($location, "unknown type `$actual_ctype->{TYPE}' for ".mapTypeName($ctype) . ": $cvar");
1023
1024 }
1025
1026 sub ConvertObjectFromPythonLevel($$$$$$$$)
1027 {
1028         my ($self, $env, $mem_ctx, $py_var, $e, $l, $var_name, $fail) = @_;
1029         my $nl = GetNextLevel($e, $l);
1030         if ($nl and $nl->{TYPE} eq "SUBCONTEXT") {
1031                 $nl = GetNextLevel($e, $nl);
1032         }
1033         my $pl = GetPrevLevel($e, $l);
1034         if ($pl and $pl->{TYPE} eq "SUBCONTEXT") {
1035                 $pl = GetPrevLevel($e, $pl);
1036         }
1037
1038         if ($l->{TYPE} eq "POINTER") {
1039                 if ($l->{POINTER_TYPE} ne "ref") {
1040                         $self->pidl("if ($py_var == Py_None) {");
1041                         $self->indent;
1042                         $self->pidl("$var_name = NULL;");
1043                         $self->deindent;
1044                         $self->pidl("} else {");
1045                         $self->indent;
1046                 }
1047                 # if we want to handle more than one level of pointer in python interfaces
1048                 # then this is where we would need to allocate it
1049                 if ($l->{POINTER_TYPE} eq "ref") {
1050                         $self->pidl("$var_name = talloc_ptrtype($mem_ctx, $var_name);");
1051                 } elsif ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::is_scalar($nl->{DATA_TYPE})
1052                          and not Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE})) {
1053                         $self->pidl("$var_name = talloc_ptrtype($mem_ctx, $var_name);");
1054                 } else {
1055                         $self->pidl("$var_name = NULL;");
1056                 }
1057                 unless ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE})) {
1058                         $var_name = get_value_of($var_name);
1059                 }
1060                 $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $py_var, $e, $nl, $var_name, $fail);
1061                 if ($l->{POINTER_TYPE} ne "ref") {
1062                         $self->deindent;
1063                         $self->pidl("}");
1064                 }
1065         } elsif ($l->{TYPE} eq "ARRAY") {
1066                 if ($pl && $pl->{TYPE} eq "POINTER") {
1067                         $var_name = get_pointer_to($var_name);
1068                 }
1069
1070                 if (is_charset_array($e, $l)) {
1071                         $self->pidl("if (PyUnicode_Check($py_var)) {");
1072                         $self->indent;
1073                         # FIXME: Use Unix charset setting rather than utf-8
1074                         $self->pidl($var_name . " = PyString_AS_STRING(PyUnicode_AsEncodedString($py_var, \"utf-8\", \"ignore\"));");
1075                         $self->deindent;
1076                         $self->pidl("} else if (PyString_Check($py_var)) {");
1077                         $self->indent;
1078                         $self->pidl($var_name . " = PyString_AS_STRING($py_var);");
1079                         $self->deindent;
1080                         $self->pidl("} else {");
1081                         $self->indent;
1082                         $self->pidl("PyErr_Format(PyExc_TypeError, \"Expected string or unicode object, got %s\", Py_TYPE($py_var)->tp_name);");
1083                         $self->pidl("$fail");
1084                         $self->deindent;
1085                         $self->pidl("}");
1086                 } else {
1087                         my $counter = "$e->{NAME}_cntr_$l->{LEVEL_INDEX}";
1088                         $self->pidl("PY_CHECK_TYPE(&PyList_Type, $py_var, $fail);");
1089                         $self->pidl("{");
1090                         $self->indent;
1091                         $self->pidl("int $counter;");
1092                         if (ArrayDynamicallyAllocated($e, $l)) {
1093                                 $self->pidl("$var_name = talloc_array_ptrtype($mem_ctx, $var_name, PyList_GET_SIZE($py_var));");
1094                                 $self->pidl("if (!$var_name) { $fail; }");
1095                                 $self->pidl("talloc_set_name_const($var_name, \"ARRAY: $var_name\");");
1096                         }
1097                         $self->pidl("for ($counter = 0; $counter < PyList_GET_SIZE($py_var); $counter++) {");
1098                         $self->indent;
1099                         $self->ConvertObjectFromPythonLevel($env, $var_name, "PyList_GET_ITEM($py_var, $counter)", $e, $nl, $var_name."[$counter]", $fail);
1100                         $self->deindent;
1101                         $self->pidl("}");
1102                         $self->deindent;
1103                         $self->pidl("}");
1104                 }
1105         } elsif ($l->{TYPE} eq "DATA") {
1106                 if (not Parse::Pidl::Typelist::is_scalar($l->{DATA_TYPE})) {
1107                         $var_name = get_pointer_to($var_name);
1108                 }
1109                 $self->ConvertObjectFromPythonData($mem_ctx, $py_var, $l->{DATA_TYPE}, $var_name, $fail, $e->{ORIGINAL});
1110         } elsif ($l->{TYPE} eq "SWITCH") {
1111                 $var_name = get_pointer_to($var_name);
1112                 my $switch = ParseExpr($l->{SWITCH_IS}, $env, $e);
1113                 my $switch_ptr = "$e->{NAME}_switch_$l->{LEVEL_INDEX}";
1114                 $self->pidl("{");
1115                 $self->indent;
1116                 my $union_type = mapTypeName($nl->{DATA_TYPE});
1117                 $self->pidl("$union_type *$switch_ptr;");
1118                 $self->pidl("$switch_ptr = py_export_" . $nl->{DATA_TYPE} . "($mem_ctx, $switch, $py_var);");
1119                 $self->fail_on_null($switch_ptr, $fail);
1120                 $self->assign($var_name, "$switch_ptr");
1121                 $self->deindent;
1122                 $self->pidl("}");
1123         } elsif ($l->{TYPE} eq "SUBCONTEXT") {
1124                 $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $py_var, $e, $nl, $var_name, $fail);
1125         } else {
1126                 fatal($e->{ORIGINAL}, "unknown level type $l->{TYPE}");
1127         }
1128 }
1129
1130 sub ConvertObjectFromPython($$$$$$$)
1131 {
1132         my ($self, $env, $mem_ctx, $ctype, $cvar, $target, $fail) = @_;
1133
1134         $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $cvar, $ctype, $ctype->{LEVELS}[0], $target, $fail);
1135 }
1136
1137 sub ConvertScalarToPython($$$)
1138 {
1139         my ($self, $ctypename, $cvar) = @_;
1140
1141         die("expected string for $cvar, not $ctypename") if (ref($ctypename) eq "HASH");
1142
1143         $ctypename = expandAlias($ctypename);
1144
1145         if ($ctypename =~ /^(u?int64|hyper|dlong|udlong|udlongr|NTTIME_hyper|NTTIME|NTTIME_1sec)$/) {
1146                 return "PyLong_FromLongLong($cvar)";
1147         }
1148
1149         if ($ctypename =~ /^(char|u?int[0-9]*|time_t|uid_t|gid_t)$/) {
1150                 return "PyInt_FromLong($cvar)";
1151         }
1152
1153         if ($ctypename eq "DATA_BLOB") {
1154                 return "PyString_FromStringAndSize((char *)($cvar).data, ($cvar).length)";
1155         }
1156
1157         if ($ctypename eq "NTSTATUS") {
1158                 return "PyErr_FromNTSTATUS($cvar)";
1159         }
1160
1161         if ($ctypename eq "WERROR") {
1162                 return "PyErr_FromWERROR($cvar)";
1163         }
1164
1165         if (($ctypename eq "string" or $ctypename eq "nbt_string" or $ctypename eq "nbt_name" or $ctypename eq "wrepl_nbt_name")) {
1166                 return "PyString_FromStringOrNULL($cvar)";
1167         }
1168
1169         if (($ctypename eq "dns_string" or $ctypename eq "dns_name")) {
1170                 return "PyString_FromStringOrNULL($cvar)";
1171         }
1172
1173         # Not yet supported
1174         if ($ctypename eq "string_array") { return "pytalloc_CObject_FromTallocPtr($cvar)"; }
1175         if ($ctypename eq "ipv4address") { return "PyString_FromStringOrNULL($cvar)"; }
1176         if ($ctypename eq "ipv6address") { return "PyString_FromStringOrNULL($cvar)"; }
1177         if ($ctypename eq "dnsp_name") { return "PyString_FromStringOrNULL($cvar)"; }
1178         if ($ctypename eq "dnsp_string") { return "PyString_FromStringOrNULL($cvar)"; }
1179         if ($ctypename eq "pointer") {
1180                 return "pytalloc_CObject_FromTallocPtr($cvar)";
1181         }
1182
1183         die("Unknown scalar type $ctypename");
1184 }
1185
1186 sub ConvertObjectToPythonData($$$$$;$)
1187 {
1188         my ($self, $mem_ctx, $ctype, $cvar, $location) = @_;
1189
1190         die("undef type for $cvar") unless(defined($ctype));
1191
1192         $ctype = resolveType($ctype);
1193
1194         my $actual_ctype = $ctype;
1195         if ($actual_ctype->{TYPE} eq "TYPEDEF") {
1196                 $actual_ctype = $actual_ctype->{DATA};
1197         }
1198
1199         if ($actual_ctype->{TYPE} eq "ENUM") {
1200                 return $self->ConvertScalarToPython(Parse::Pidl::Typelist::enum_type_fn($actual_ctype), $cvar);
1201         } elsif ($actual_ctype->{TYPE} eq "BITMAP") {
1202                 return $self->ConvertScalarToPython(Parse::Pidl::Typelist::bitmap_type_fn($actual_ctype), $cvar);
1203         } elsif ($actual_ctype->{TYPE} eq "SCALAR") {
1204                 return $self->ConvertScalarToPython($actual_ctype->{NAME}, $cvar);
1205         } elsif ($actual_ctype->{TYPE} eq "UNION") {
1206                 fatal($ctype, "union without discriminant: " . mapTypeName($ctype) . ": $cvar");
1207         } elsif ($actual_ctype->{TYPE} eq "STRUCT" or $actual_ctype->{TYPE} eq "INTERFACE") {
1208                 my $ctype_name = $self->use_type_variable($ctype);
1209                 unless (defined($ctype_name)) {
1210                         error($location, "Unable to determine origin of type `" . mapTypeName($ctype) . "'");
1211                         return "NULL"; # FIXME!
1212                 }
1213                 return "pytalloc_reference_ex($ctype_name, $mem_ctx, $cvar)";
1214         }
1215
1216         fatal($location, "unknown type $actual_ctype->{TYPE} for ".mapTypeName($ctype) . ": $cvar");
1217 }
1218
1219 sub fail_on_null($$$)
1220 {
1221         my ($self, $var, $fail) = @_;
1222         $self->pidl("if ($var == NULL) {");
1223         $self->indent;
1224         $self->pidl($fail);
1225         $self->deindent;
1226         $self->pidl("}");
1227 }
1228
1229 sub ConvertObjectToPythonLevel($$$$$$)
1230 {
1231         my ($self, $mem_ctx, $env, $e, $l, $var_name, $py_var, $fail) = @_;
1232         my $nl = GetNextLevel($e, $l);
1233         if ($nl and $nl->{TYPE} eq "SUBCONTEXT") {
1234                 $nl = GetNextLevel($e, $nl);
1235         }
1236         my $pl = GetPrevLevel($e, $l);
1237         if ($pl and $pl->{TYPE} eq "SUBCONTEXT") {
1238                 $pl = GetPrevLevel($e, $pl);
1239         }
1240
1241         if ($l->{TYPE} eq "POINTER") {
1242                 if ($l->{POINTER_TYPE} ne "ref") {
1243                         $self->pidl("if ($var_name == NULL) {");
1244                         $self->indent;
1245                         $self->pidl("$py_var = Py_None;");
1246                         $self->pidl("Py_INCREF($py_var);");
1247                         $self->deindent;
1248                         $self->pidl("} else {");
1249                         $self->indent;
1250                 }
1251                 my $var_name2 = $var_name;
1252                 unless ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE})) {
1253                         $var_name2 = get_value_of($var_name);
1254                 }
1255                 $self->ConvertObjectToPythonLevel($var_name, $env, $e, $nl, $var_name2, $py_var, $fail);
1256                 if ($l->{POINTER_TYPE} ne "ref") {
1257                         $self->deindent;
1258                         $self->pidl("}");
1259                 }
1260         } elsif ($l->{TYPE} eq "ARRAY") {
1261                 if ($pl && $pl->{TYPE} eq "POINTER") {
1262                         $var_name = get_pointer_to($var_name);
1263                 }
1264
1265                 if (is_charset_array($e, $l)) {
1266                         # FIXME: Use Unix charset setting rather than utf-8
1267                         $self->pidl("if ($var_name == NULL) {");
1268                         $self->indent;
1269                         $self->pidl("$py_var = Py_None;");
1270                         $self->pidl("Py_INCREF($py_var);");
1271                         $self->deindent;
1272                         $self->pidl("} else {");
1273                         $self->indent;
1274                         $self->pidl("$py_var = PyUnicode_Decode($var_name, strlen($var_name), \"utf-8\", \"ignore\");");
1275                         $self->deindent;
1276                         $self->pidl("}");
1277                 } else {
1278                         die("No SIZE_IS for array $var_name") unless (defined($l->{SIZE_IS}));
1279                         my $length = $l->{SIZE_IS};
1280                         if (defined($l->{LENGTH_IS})) {
1281                                 $length = $l->{LENGTH_IS};
1282                         }
1283
1284                         $length = ParseExpr($length, $env, $e);
1285                         $self->pidl("$py_var = PyList_New($length);");
1286                         $self->fail_on_null($py_var, $fail);
1287                         $self->pidl("{");
1288                         $self->indent;
1289                         my $counter = "$e->{NAME}_cntr_$l->{LEVEL_INDEX}";
1290                         $self->pidl("int $counter;");
1291                         $self->pidl("for ($counter = 0; $counter < $length; $counter++) {");
1292                         $self->indent;
1293                         my $member_var = "py_$e->{NAME}_$l->{LEVEL_INDEX}";
1294                         $self->pidl("PyObject *$member_var;");
1295                         $self->ConvertObjectToPythonLevel($var_name, $env, $e, $nl, $var_name."[$counter]", $member_var, $fail);
1296                         $self->pidl("PyList_SetItem($py_var, $counter, $member_var);");
1297                         $self->deindent;
1298                         $self->pidl("}");
1299                         $self->deindent;
1300                         $self->pidl("}");
1301                 }
1302         } elsif ($l->{TYPE} eq "SWITCH") {
1303                 $var_name = get_pointer_to($var_name);
1304                 my $switch = ParseExpr($l->{SWITCH_IS}, $env, $e);
1305                 $self->pidl("$py_var = py_import_" . $nl->{DATA_TYPE} . "($mem_ctx, $switch, $var_name);");
1306                 $self->fail_on_null($py_var, $fail);
1307
1308         } elsif ($l->{TYPE} eq "DATA") {
1309                 if (not Parse::Pidl::Typelist::is_scalar($l->{DATA_TYPE})) {
1310                         $var_name = get_pointer_to($var_name);
1311                 }
1312                 my $conv = $self->ConvertObjectToPythonData($mem_ctx, $l->{DATA_TYPE}, $var_name, $e->{ORIGINAL});
1313                 $self->pidl("$py_var = $conv;");
1314         } elsif ($l->{TYPE} eq "SUBCONTEXT") {
1315                 $self->ConvertObjectToPythonLevel($mem_ctx, $env, $e, $nl, $var_name, $py_var, $fail);
1316         } else {
1317                 fatal($e->{ORIGINAL}, "Unknown level type $l->{TYPE} $var_name");
1318         }
1319 }
1320
1321 sub ConvertObjectToPython($$$$$$)
1322 {
1323         my ($self, $mem_ctx, $env, $ctype, $cvar, $py_var, $fail) = @_;
1324
1325         $self->ConvertObjectToPythonLevel($mem_ctx, $env, $ctype, $ctype->{LEVELS}[0], $cvar, $py_var, $fail);
1326 }
1327
1328 sub Parse($$$$$)
1329 {
1330     my($self,$basename,$ndr,$ndr_hdr,$hdr) = @_;
1331
1332         $self->{BASENAME} = $basename;
1333
1334     $self->pidl_hdr("
1335 /* Python wrapper functions auto-generated by pidl */
1336 #include <Python.h>
1337 #include \"includes.h\"
1338 #include <pytalloc.h>
1339 #include \"librpc/rpc/pyrpc.h\"
1340 #include \"librpc/rpc/pyrpc_util.h\"
1341 #include \"$hdr\"
1342 #include \"$ndr_hdr\"
1343
1344 ");
1345
1346         foreach my $x (@$ndr) {
1347                 ($x->{TYPE} eq "IMPORT") && $self->Import(@{$x->{PATHS}});
1348             ($x->{TYPE} eq "INTERFACE") && $self->Interface($x, $basename);
1349         }
1350
1351         $self->pidl("static PyMethodDef $basename\_methods[] = {");
1352         $self->indent;
1353         foreach (@{$self->{module_methods}}) {
1354                 my ($fn_name, $pyfn_name, $flags, $doc) = @$_;
1355                 $self->pidl("{ \"$fn_name\", (PyCFunction)$pyfn_name, $flags, $doc },");
1356         }
1357
1358         $self->pidl("{ NULL, NULL, 0, NULL }");
1359         $self->deindent;
1360         $self->pidl("};");
1361
1362         $self->pidl("");
1363
1364         $self->pidl_hdr("void init$basename(void);");
1365         $self->pidl("void init$basename(void)");
1366         $self->pidl("{");
1367         $self->indent;
1368         $self->pidl("PyObject *m;");
1369         foreach (keys %{$self->{module_imports}}) {
1370                 $self->pidl("PyObject *$_;");
1371         }
1372         $self->pidl("");
1373
1374         foreach (keys %{$self->{module_imports}}) {
1375                 my $var_name = $_;
1376                 my $module_path = $self->{module_imports}->{$var_name};
1377                 $self->pidl("$var_name = PyImport_ImportModule(\"$module_path\");");
1378                 $self->pidl("if ($var_name == NULL)");
1379                 $self->pidl("\treturn;");
1380                 $self->pidl("");
1381         }
1382
1383         foreach (keys %{$self->{type_imports}}) {
1384                 my $type_var = "$_\_Type";
1385                 my $module_path = $self->{type_imports}->{$_};
1386                 $self->pidl_hdr("static PyTypeObject *$type_var;\n");
1387                 my $pretty_name = PrettifyTypeName($_, $module_path);
1388                 my $module_var = "dep_$module_path";
1389                 $module_var =~ s/\./_/g;
1390                 $self->pidl("$type_var = (PyTypeObject *)PyObject_GetAttrString($module_var, \"$pretty_name\");");
1391                 $self->pidl("if ($type_var == NULL)");
1392                 $self->pidl("\treturn;");
1393                 $self->pidl("");
1394         }
1395
1396         $self->pidl($_) foreach (@{$self->{prereadycode}});
1397
1398         foreach (@{$self->{ready_types}}) {
1399                 $self->pidl("if (PyType_Ready($_) < 0)");
1400                 $self->pidl("\treturn;");
1401         }
1402
1403         $self->pidl($_) foreach (@{$self->{postreadycode}});
1404
1405         foreach (@{$self->{patch_type_calls}}) {
1406                 my ($typename, $cvar) = @$_;
1407                 $self->pidl("#ifdef PY_".uc($typename)."_PATCH");
1408                 $self->pidl("PY_".uc($typename)."_PATCH($cvar);");
1409                 $self->pidl("#endif");
1410         }
1411
1412         $self->pidl("");
1413
1414         $self->pidl("m = Py_InitModule3(\"$basename\", $basename\_methods, \"$basename DCE/RPC\");");
1415         $self->pidl("if (m == NULL)");
1416         $self->pidl("\treturn;");
1417         $self->pidl("");
1418         foreach my $name (keys %{$self->{constants}}) {
1419                 my $py_obj;
1420                 my ($ctype, $cvar) = @{$self->{constants}->{$name}};
1421                 if ($cvar =~ /^[0-9]+$/ or $cvar =~ /^0x[0-9a-fA-F]+$/) {
1422                         $py_obj = "PyInt_FromLong($cvar)";
1423                 } elsif ($cvar =~ /^".*"$/) {
1424                         $py_obj = "PyString_FromString($cvar)";
1425                 } else {
1426                         $py_obj = $self->ConvertObjectToPythonData("NULL", expandAlias($ctype), $cvar, undef);
1427                 }
1428
1429                 $self->pidl("PyModule_AddObject(m, \"$name\", $py_obj);");
1430         }
1431
1432         foreach (@{$self->{module_objects}}) {
1433                 my ($object_name, $c_name) = @$_;
1434                 $self->pidl("Py_INCREF($c_name);");
1435                 $self->pidl("PyModule_AddObject(m, \"$object_name\", $c_name);");
1436         }
1437
1438         $self->pidl("#ifdef PY_MOD_".uc($basename)."_PATCH");
1439         $self->pidl("PY_MOD_".uc($basename)."_PATCH(m);");
1440         $self->pidl("#endif");
1441
1442         $self->pidl("");
1443         $self->deindent;
1444         $self->pidl("}");
1445     return ($self->{res_hdr} . $self->{res});
1446 }
1447
1448 1;