04649d3668f6abff18a87bba87891fc7aeb83e2e
[ira/wip.git] / source / 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::Typelist qw(hasType getType mapTypeName expandAlias);
13 use Parse::Pidl::Util qw(has_property ParseExpr);
14 use Parse::Pidl::NDR qw(GetPrevLevel GetNextLevel ContainsDeferred is_charset_array);
15 use Parse::Pidl::CUtil qw(get_value_of get_pointer_to);
16 use Parse::Pidl::Samba4::Header qw(GenerateFunctionInEnv GenerateFunctionOutEnv EnvSubstituteValue GenerateStructEnv);
17
18 use vars qw($VERSION);
19 $VERSION = '0.01';
20
21 sub new($) {
22         my ($class) = @_;
23         my $self = { res => "", res_hdr => "", tabs => "", constants => {},
24                      module_methods => []};
25         bless($self, $class);
26 }
27
28 sub pidl_hdr ($$)
29 {
30         my $self = shift;
31         $self->{res_hdr} .= shift;
32 }
33
34 sub pidl($$)
35 {
36         my ($self, $d) = @_;
37         if ($d) {
38                 $self->{res} .= $self->{tabs};
39                 $self->{res} .= $d;
40         }
41         $self->{res} .= "\n";
42 }
43
44 sub indent($)
45 {
46         my ($self) = @_;
47         $self->{tabs} .= "\t";
48 }
49
50 sub deindent($)
51 {
52         my ($self) = @_;
53         $self->{tabs} = substr($self->{tabs}, 0, -1);
54 }
55
56 sub Import
57 {
58         my $self = shift;
59         my @imports = @_;
60         foreach (@imports) {
61                 s/\.idl\"$//;
62                 s/^\"//;
63                 $self->pidl_hdr("#include \"librpc/gen_ndr/py_$_\.h\"\n");
64         }
65 }
66
67 sub Const($$)
68 {
69     my ($self, $const) = @_;
70         $self->register_constant($const->{NAME}, $const->{DTYPE}, $const->{VALUE});
71 }
72
73 sub register_constant($$$$)
74 {
75         my ($self, $name, $type, $value) = @_;
76
77         $self->{constants}->{$name} = [$type, $value];
78 }
79
80 sub EnumAndBitmapConsts($$$)
81 {
82         my ($self, $name, $d) = @_;
83
84         return unless (defined($d->{ELEMENTS}));
85
86         foreach my $e (@{$d->{ELEMENTS}}) {
87                 $e =~ /^([A-Za-z0-9_]+)=(.*)$/;
88                 my $cname = $1;
89                 
90                 $self->register_constant($cname, $d, $cname);
91         }
92 }
93
94 sub FromUnionToPythonFunction($$$)
95 {
96         my ($self, $type, $switch, $name) = @_;
97
98         $self->pidl("PyObject *ret;");
99         $self->pidl("");
100
101         $self->pidl("switch ($switch) {");
102         $self->indent;
103
104         foreach my $e (@{$type->{ELEMENTS}}) {
105                 if (defined($e->{CASE})) {
106                         $self->pidl("$e->{CASE}:");
107                 } else {
108                         $self->pidl("default:");
109                 }
110
111                 $self->indent;
112
113                 if ($e->{NAME}) {
114                         $self->ConvertObjectToPython({}, $e, "$name->$e->{NAME}", "ret");
115                 } else {
116                         $self->pidl("ret = Py_None;");
117                 }
118
119                 $self->pidl("return ret;");
120                 $self->pidl("");
121
122                 $self->deindent;
123         }
124
125         $self->deindent;
126         $self->pidl("}");
127
128         $self->pidl("PyErr_SetString(PyExc_TypeError, \"unknown union level\");");
129         $self->pidl("return NULL;");
130 }
131
132 sub FromPythonToUnionFunction($$$$$)
133 {
134         my ($self, $type, $typename, $switch, $mem_ctx, $name) = @_;
135
136         my $has_default = 0;
137
138         $self->pidl("$typename *ret = talloc_zero($mem_ctx, $typename);");
139
140         $self->pidl("switch ($switch) {");
141         $self->indent;
142
143         foreach my $e (@{$type->{ELEMENTS}}) {
144                 if (defined($e->{CASE})) {
145                         $self->pidl("$e->{CASE}:");
146                 } else {
147                         $has_default = 1;
148                         $self->pidl("default:");
149                 }
150                 $self->indent;
151                 if ($e->{NAME}) {
152                         $self->ConvertObjectFromPython({}, $mem_ctx, $e, $name, "ret->$e->{NAME}", "talloc_free(ret); return NULL;");
153                 }
154                 $self->pidl("break;");
155                 $self->deindent;
156                 $self->pidl("");
157         }
158
159         if (!$has_default) {
160                 $self->pidl("default:");
161                 $self->indent;
162                 $self->pidl("PyErr_SetString(PyExc_TypeError, \"invalid union level value\");");
163                 $self->pidl("talloc_free(ret);");
164                 $self->pidl("ret = NULL;");
165                 $self->deindent;
166         }
167
168         $self->deindent;
169         $self->pidl("}");
170         $self->pidl("");
171         $self->pidl("return ret;");
172 }
173
174 sub PythonStruct($$$$)
175 {
176         my ($self, $name, $cname, $d) = @_;
177
178         my $env = GenerateStructEnv($d, "object");
179
180         $self->pidl("");
181
182         $self->pidl("static PyObject *py_$name\_getattr(PyObject *obj, char *name)");
183         $self->pidl("{");
184         $self->indent;
185         $self->pidl("$cname *object = py_talloc_get_type(obj, $cname);");
186         foreach my $e (@{$d->{ELEMENTS}}) {
187                 $self->pidl("if (!strcmp(name, \"$e->{NAME}\")) {");
188                 my $varname = "object->$e->{NAME}";
189                 $self->indent;
190                 $self->pidl("PyObject *py_$e->{NAME};");
191                 $self->ConvertObjectToPython($env, $e, $varname, "py_$e->{NAME}");
192                 $self->pidl("return py_$e->{NAME};");
193                 $self->deindent;
194                 $self->pidl("}");
195         }
196         $self->pidl("PyErr_SetString(PyExc_AttributeError, \"no such attribute\");");
197         $self->pidl("return NULL;");
198         $self->deindent;
199         $self->pidl("}");
200         $self->pidl("");
201
202         $self->pidl("static int py_$name\_setattr(PyObject *py_obj, char *name, PyObject *value)");
203         $self->pidl("{");
204         $self->indent;
205         $self->pidl("$cname *object = py_talloc_get_type(py_obj, $cname);");
206         my $mem_ctx = "py_talloc_get_mem_ctx(py_obj)";
207         foreach my $e (@{$d->{ELEMENTS}}) {
208                 $self->pidl("if (!strcmp(name, \"$e->{NAME}\")) {");
209                 my $varname = "object->$e->{NAME}";
210                 $self->indent;
211                 if ($e->{ORIGINAL}->{POINTERS} > 0) {
212                         $self->pidl("talloc_free($varname);");
213                 }
214                 $self->ConvertObjectFromPython($env, $mem_ctx, $e, "value", $varname, "return -1;");
215                 $self->pidl("return 0;");
216                 $self->deindent;
217                 $self->pidl("}");
218         }
219         $self->pidl("PyErr_SetString(PyExc_AttributeError, \"no such attribute\");");
220         $self->pidl("return -1;");
221         $self->deindent;
222         $self->pidl("}");
223         $self->pidl("");
224
225         $self->pidl_hdr("PyAPI_DATA(PyTypeObject) $name\_Type;\n");
226         $self->pidl_hdr("#define $name\_Check(op) PyObject_TypeCheck(op, &$name\_Type)\n");
227         $self->pidl_hdr("#define $name\_CheckExact(op) ((op)->ob_type == &$name\_Type)\n");
228         $self->pidl_hdr("\n");
229         $self->pidl("PyTypeObject $name\_Type = {");
230         $self->indent;
231         $self->pidl("PyObject_HEAD_INIT(NULL) 0,");
232         $self->pidl(".tp_name = \"$name\",");
233         $self->pidl(".tp_basicsize = sizeof(py_talloc_Object),");
234         $self->pidl(".tp_dealloc = py_talloc_dealloc,");
235         $self->pidl(".tp_getattr = py_$name\_getattr,");
236         $self->pidl(".tp_setattr = py_$name\_setattr,");
237         $self->pidl(".tp_repr = py_talloc_default_repr,");
238         $self->deindent;
239         $self->pidl("};");
240
241         $self->pidl("");
242
243         my $py_fnname = "py_$name";
244         $self->pidl("static PyObject *$py_fnname(PyObject *self, PyObject *args)");
245         $self->pidl("{");
246         $self->indent;
247         $self->pidl("$cname *ret = talloc_zero(NULL, $cname);");
248         $self->pidl("return py_talloc_import(&$name\_Type, ret);");
249         $self->deindent;
250         $self->pidl("}");
251         $self->pidl("");
252
253         return $py_fnname;
254 }
255
256 sub PythonFunction($$$)
257 {
258         my ($self, $fn, $iface) = @_;
259
260         $self->pidl("static PyObject *py_$fn->{NAME}(PyObject *self, PyObject *args, PyObject *kwargs)");
261         $self->pidl("{");
262         $self->indent;
263         $self->pidl("$iface\_InterfaceObject *iface = ($iface\_InterfaceObject *)self;");
264         $self->pidl("NTSTATUS status;");
265         $self->pidl("TALLOC_CTX *mem_ctx = talloc_new(NULL);");
266         $self->pidl("struct $fn->{NAME} r;");
267         $self->pidl("PyObject *result = Py_None;");
268
269         my $env = GenerateFunctionInEnv($fn, "r.");
270         my $result_size = 0;
271
272         my $args_format = "";
273         my $args_string = "";
274         my $args_names = "";
275
276         foreach my $e (@{$fn->{ELEMENTS}}) {
277                 $self->pidl("PyObject *py_$e->{NAME};");
278                 if (grep(/out/,@{$e->{DIRECTION}})) {
279                         $result_size++;
280                 }
281                 if (grep(/in/,@{$e->{DIRECTION}})) {
282                         $args_format .= "O";
283                         $args_string .= ", &py_$e->{NAME}";
284                         $args_names .= "\"$e->{NAME}\", ";
285                 }
286         }
287         $self->pidl("const char *kwnames[] = {");
288         $self->indent;
289         $self->pidl($args_names . "NULL");
290         $self->deindent;
291         $self->pidl("};");
292
293         $self->pidl("");
294         $self->pidl("if (!PyArg_ParseTupleAndKeywords(args, kwargs, \"$args_format:$fn->{NAME}\", discard_const_p(char *, kwnames)$args_string)) {");
295         $self->indent;
296         $self->pidl("return NULL;");
297         $self->deindent;
298         $self->pidl("}");
299
300         if ($result_size > 0) {
301                 $self->pidl("");
302                 $self->pidl("ZERO_STRUCT(r.out);");
303         }
304         if ($fn->{RETURN_TYPE}) {
305                 $result_size++;
306         }
307
308         foreach my $e (@{$fn->{ELEMENTS}}) {
309                 if (grep(/in/,@{$e->{DIRECTION}})) {
310                         $self->ConvertObjectFromPython($env, "mem_ctx", $e, "py_$e->{NAME}", "r.in.$e->{NAME}", "talloc_free(mem_ctx); return NULL;");
311                 }
312         }
313         $self->pidl("status = dcerpc_$fn->{NAME}(iface->pipe, mem_ctx, &r);");
314         $self->handle_ntstatus("status", "NULL", "mem_ctx");
315
316         $env = GenerateFunctionOutEnv($fn, "r.");
317         my $i = 0;
318
319         if ($result_size > 1) {
320                 $self->pidl("result = PyTuple_New($result_size);");
321         }
322
323         foreach my $e (@{$fn->{ELEMENTS}}) {
324                 my $py_name = "py_$e->{NAME}";
325                 if (grep(/out/,@{$e->{DIRECTION}})) {
326                         $self->ConvertObjectToPython($env, $e, "r.out.$e->{NAME}", $py_name);
327                         if ($result_size > 1) {
328                                 $self->pidl("PyTuple_SetItem(result, $i, $py_name);");
329                                 $i++;
330                         } else {
331                                 $self->pidl("result = $py_name;");
332                         }
333                 }
334         }
335
336         if (defined($fn->{RETURN_TYPE})) {
337                 my $conv = $self->ConvertObjectToPythonData($fn->{RETURN_TYPE}, "r.out.result");
338                 if ($result_size > 1) {
339                         $self->pidl("PyTuple_SetItem(result, $i, $conv);");
340                 } else {
341                         $self->pidl("result = $conv;");
342                 }
343         }
344
345         $self->pidl("talloc_free(mem_ctx);");
346         $self->pidl("return result;");
347         $self->deindent;
348         $self->pidl("}");
349         $self->pidl("");
350 }
351
352 sub handle_ntstatus($$$$)
353 {
354         my ($self, $var, $retval, $mem_ctx) = @_;
355
356         $self->pidl("if (NT_STATUS_IS_ERR($var)) {");
357         $self->indent;
358         $self->pidl("PyErr_SetString(PyExc_RuntimeError, nt_errstr($var));");
359         $self->pidl("talloc_free($mem_ctx);") if ($mem_ctx);
360         $self->pidl("return $retval;");
361         $self->deindent;
362         $self->pidl("}");
363         $self->pidl("");
364 }
365
366 sub PythonType($$$)
367 {
368         my ($self, $d, $interface, $basename) = @_;
369
370         my $actual_ctype = $d;
371         if ($actual_ctype->{TYPE} eq "TYPEDEF") {
372                 $actual_ctype = $actual_ctype->{DATA};
373         }
374
375         if ($actual_ctype->{TYPE} eq "STRUCT") {
376                 my $py_fnname;
377                 if ($d->{TYPE} eq "STRUCT") {
378                         $py_fnname = $self->PythonStruct($d->{NAME}, mapTypeName($d), $d);
379                 } else {
380                         $py_fnname = $self->PythonStruct($d->{NAME}, mapTypeName($d), $d->{DATA});
381                 }
382
383                 my $fn_name = $d->{NAME};
384
385                 $fn_name =~ s/^$interface->{NAME}_//;
386                 $fn_name =~ s/^$basename\_//;
387
388                 $self->register_module_method($fn_name, $py_fnname, "METH_NOARGS", "NULL");
389         }
390
391         if ($d->{TYPE} eq "ENUM" or $d->{TYPE} eq "BITMAP") {
392                 $self->EnumAndBitmapConsts($d->{NAME}, $d);
393         }
394
395         if ($d->{TYPE} eq "TYPEDEF" and ($d->{DATA}->{TYPE} eq "ENUM" or $d->{DATA}->{TYPE} eq "BITMAP")) {
396                 $self->EnumAndBitmapConsts($d->{NAME}, $d->{DATA});
397         }
398
399         if ($actual_ctype->{TYPE} eq "UNION" and defined($actual_ctype->{ELEMENTS})) {
400                 $self->pidl("PyObject *py_import_$d->{NAME}(int level, " .mapTypeName($d) . " *in)");
401                 $self->pidl("{");
402                 $self->indent;
403                 $self->FromUnionToPythonFunction($actual_ctype, "level", "in") if ($actual_ctype->{TYPE} eq "UNION");
404                 $self->deindent;
405                 $self->pidl("}");
406                 $self->pidl("");
407
408                 $self->pidl(mapTypeName($d) . " *py_export_$d->{NAME}(TALLOC_CTX *mem_ctx, int level, PyObject *in)");
409                 $self->pidl("{");
410                 $self->indent;
411                 $self->FromPythonToUnionFunction($actual_ctype, mapTypeName($d), "level", "mem_ctx", "in") if ($actual_ctype->{TYPE} eq "UNION");
412                 $self->deindent;
413                 $self->pidl("}");
414                 $self->pidl("");
415         }
416 }
417
418 sub Interface($$$)
419 {
420         my($self,$interface,$basename) = @_;
421
422         $self->pidl_hdr("#ifndef _HEADER_PYTHON_$interface->{NAME}\n");
423         $self->pidl_hdr("#define _HEADER_PYTHON_$interface->{NAME}\n\n");
424
425         $self->pidl_hdr("\n");
426
427         $self->Const($_) foreach (@{$interface->{CONSTS}});
428
429         foreach my $d (@{$interface->{TYPES}}) {
430                 next if has_property($d, "nopython");
431
432                 $self->PythonType($d, $interface, $basename);
433         }
434
435         $self->pidl_hdr("PyAPI_DATA(PyTypeObject) $interface->{NAME}_InterfaceType;\n");
436         $self->pidl("typedef struct {");
437         $self->indent;
438         $self->pidl("PyObject_HEAD");
439         $self->pidl("struct dcerpc_pipe *pipe;");
440         $self->deindent;
441         $self->pidl("} $interface->{NAME}_InterfaceObject;");
442
443         $self->pidl("");
444
445         foreach my $d (@{$interface->{FUNCTIONS}}) {
446                 next if not defined($d->{OPNUM});
447                 next if has_property($d, "nopython");
448
449                 $self->PythonFunction($d, $interface->{NAME});
450         }
451
452         $self->pidl("static PyMethodDef interface_$interface->{NAME}\_methods[] = {");
453         $self->indent;
454         foreach my $d (@{$interface->{FUNCTIONS}}) {
455                 next if not defined($d->{OPNUM});
456                 next if has_property($d, "nopython");
457
458                 my $fn_name = $d->{NAME};
459
460                 $fn_name =~ s/^$interface->{NAME}_//;
461                 $fn_name =~ s/^$basename\_//;
462
463                 $self->pidl("{ \"$fn_name\", (PyCFunction)py_$d->{NAME}, METH_VARARGS|METH_KEYWORDS, NULL },");
464         }
465         $self->pidl("{ NULL, NULL, 0, NULL }");
466         $self->deindent;
467         $self->pidl("};");
468         $self->pidl("");
469
470         $self->pidl("static void interface_$interface->{NAME}_dealloc(PyObject* self)");
471         $self->pidl("{");
472         $self->indent;
473         $self->pidl("$interface->{NAME}_InterfaceObject *interface = ($interface->{NAME}_InterfaceObject *)self;");
474         $self->pidl("talloc_free(interface->pipe);");
475         $self->pidl("PyObject_Del(self);");
476         $self->deindent;
477         $self->pidl("}");
478         $self->pidl("");
479
480         $self->pidl("static PyObject *interface_$interface->{NAME}_getattr(PyObject *obj, char *name)");
481         $self->pidl("{");
482         $self->indent;
483         $self->pidl("return Py_FindMethod(interface_$interface->{NAME}\_methods, obj, name);");
484         $self->deindent;
485         $self->pidl("}");
486
487         $self->pidl("");
488
489         $self->pidl("PyTypeObject $interface->{NAME}_InterfaceType = {");
490         $self->indent;
491         $self->pidl("PyObject_HEAD_INIT(NULL) 0,");
492         $self->pidl(".tp_name = \"$interface->{NAME}\",");
493         $self->pidl(".tp_basicsize = sizeof($interface->{NAME}_InterfaceObject),");
494         $self->pidl(".tp_dealloc = interface_$interface->{NAME}_dealloc,");
495         $self->pidl(".tp_getattr = interface_$interface->{NAME}_getattr,");
496         $self->deindent;
497         $self->pidl("};");
498
499         $self->pidl("");
500
501         $self->register_module_method($interface->{NAME}, "interface_$interface->{NAME}", "METH_VARARGS|METH_KEYWORDS", "NULL");
502         $self->pidl("static PyObject *interface_$interface->{NAME}(PyObject *self, PyObject *args, PyObject *kwargs)");
503         $self->pidl("{");
504         $self->indent;
505         $self->pidl("$interface->{NAME}_InterfaceObject *ret;");
506         $self->pidl("const char *binding_string;");
507         $self->pidl("struct cli_credentials *credentials;");
508         $self->pidl("struct loadparm_context *lp_ctx = NULL;");
509         $self->pidl("PyObject *py_lp_ctx = NULL, *py_credentials = Py_None;");
510         $self->pidl("TALLOC_CTX *mem_ctx = NULL;");
511         $self->pidl("NTSTATUS status;");
512         $self->pidl("");
513         $self->pidl("const char *kwnames[] = {");
514         $self->indent;
515         $self->pidl("\"binding\", \"lp_ctx\", \"credentials\", NULL");
516         $self->deindent;
517         $self->pidl("};");
518         $self->pidl("extern struct loadparm_context *lp_from_py_object(PyObject *py_obj);");
519     $self->pidl("extern struct cli_credentials *cli_credentials_from_py_object(PyObject *py_obj);");
520         $self->pidl("");
521         $self->pidl("if (!PyArg_ParseTupleAndKeywords(args, kwargs, \"sO|O:$interface->{NAME}\", discard_const_p(char *, kwnames), &binding_string, &py_lp_ctx, &py_credentials)) {");
522         $self->indent;
523         $self->pidl("return NULL;");
524         $self->deindent;
525         $self->pidl("}");
526         $self->pidl("");
527         $self->pidl("if (py_lp_ctx != NULL) {");
528         $self->indent;
529         $self->pidl("lp_ctx = lp_from_py_object(py_lp_ctx);");
530         $self->pidl("if (lp_ctx == NULL) {");
531         $self->indent;
532         $self->pidl("PyErr_SetString(PyExc_TypeError, \"Expected loadparm context\");");
533         $self->pidl("return NULL;");
534         $self->deindent;
535         $self->pidl("}");
536         $self->deindent;
537         $self->pidl("}");
538         $self->pidl("");
539
540     $self->pidl("credentials = cli_credentials_from_py_object(py_credentials);");
541     $self->pidl("if (credentials == NULL) {");
542     $self->indent;
543     $self->pidl("PyErr_SetString(PyExc_TypeError, \"Expected credentials\");");
544     $self->pidl("return NULL;");
545     $self->deindent;
546     $self->pidl("}");
547
548         $self->pidl("ret = PyObject_New($interface->{NAME}_InterfaceObject, &$interface->{NAME}_InterfaceType);");
549         $self->pidl("");
550
551         $self->pidl("status = dcerpc_pipe_connect(NULL, &ret->pipe, binding_string, ");
552         $self->pidl("             &ndr_table_$interface->{NAME}, credentials, NULL, lp_ctx);");
553         $self->handle_ntstatus("status", "NULL", "mem_ctx");
554
555         $self->pidl("ret->pipe->conn->flags |= DCERPC_NDR_REF_ALLOC;");
556
557         $self->pidl("return (PyObject *)ret;");
558         $self->deindent;
559         $self->pidl("}");
560         
561         $self->pidl("");
562
563         $self->pidl_hdr("\n");
564         $self->pidl_hdr("#endif /* _HEADER_NDR_$interface->{NAME} */\n");
565 }
566
567 sub register_module_method($$$$$)
568 {
569         my ($self, $fn_name, $pyfn_name, $flags, $doc) = @_;
570
571         push (@{$self->{module_methods}}, [$fn_name, $pyfn_name, $flags, $doc])
572 }
573
574 sub assign($$$)
575 {
576         my ($self, $dest, $src) = @_;
577         if ($dest =~ /^\&/) {
578                 $self->pidl("memcpy($dest, $src, sizeof(*$dest));");
579         } else {
580                 $self->pidl("$dest = $src;");
581         }
582 }
583
584 sub ConvertObjectFromPythonData($$$$$$)
585 {
586         my ($self, $mem_ctx, $cvar, $ctype, $target, $fail) = @_;
587
588         die("undef type for $cvar") unless(defined($ctype));
589
590         if (ref($ctype) ne "HASH") {
591                 $ctype = getType($ctype);
592         }
593
594         if (ref($ctype) ne "HASH") {
595                 $self->pidl("$target = FIXME($cvar);");
596                 return;
597         }
598
599         my $actual_ctype = $ctype;
600         if ($ctype->{TYPE} eq "TYPEDEF") {
601                 $actual_ctype = $ctype->{DATA};
602         }
603
604         if ($actual_ctype->{TYPE} eq "ENUM" or $actual_ctype->{TYPE} eq "BITMAP" or 
605                 $actual_ctype->{TYPE} eq "SCALAR" and (
606                 expandAlias($actual_ctype->{NAME}) =~ /^(u?int[0-9]+|hyper|NTTIME|time_t|NTTIME_hyper|NTTIME_1sec|dlong|udlong|udlongr)$/)) {
607                 $self->pidl("PY_CHECK_TYPE(PyInt, $cvar, $fail);");
608                 $self->pidl("$target = PyInt_AsLong($cvar);");
609                 return;
610         }
611
612         if ($actual_ctype->{TYPE} eq "STRUCT") {
613                 $self->pidl("PY_CHECK_TYPE($ctype->{NAME}, $cvar, $fail);");
614                 $self->assign($target, "py_talloc_get_ptr($cvar)");
615                 return;
616         }
617
618         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "DATA_BLOB") {
619                 $self->pidl("$target = data_blob_talloc($mem_ctx, PyString_AsString($cvar), PyString_Size($cvar));");
620                 return;
621         }
622
623         if ($actual_ctype->{TYPE} eq "SCALAR" and 
624                 ($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")) {
625                 $self->pidl("$target = talloc_strdup($mem_ctx, PyString_AsString($cvar));");
626                 return;
627         }
628
629         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "ipv4address") {
630                 $self->pidl("$target = FIXME($cvar);");
631                 return;
632                 }
633
634
635         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "NTSTATUS") {
636                 $self->pidl("$target = PyInt_AsLong($cvar);");
637                 return;
638         }
639
640         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "WERROR") {
641                 $self->pidl("$target = PyInt_AsLong($cvar);");
642                 return;
643         }
644
645         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "string_array") {
646                 $self->pidl("$target = FIXME($cvar);");
647                 return;
648         }
649
650         if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "pointer") {
651                 $self->assign($target, "PyCObject_AsVoidPtr($cvar)");
652                 return;
653         }
654
655         die("unknown type ".mapTypeName($ctype) . ": $cvar");
656
657 }
658
659 sub ConvertObjectFromPythonLevel($$$$$$$$)
660 {
661         my ($self, $env, $mem_ctx, $py_var, $e, $l, $var_name, $fail) = @_;
662
663         if ($l->{TYPE} eq "POINTER") {
664                 if ($l->{POINTER_TYPE} ne "ref") {
665                         $self->pidl("if ($py_var == Py_None) {");
666                         $self->indent;
667                         $self->pidl("$var_name = NULL;");
668                         $self->deindent;
669                         $self->pidl("} else {");
670                         $self->indent;
671                 }
672                 $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $py_var, $e, GetNextLevel($e, $l), get_value_of($var_name), $fail);
673                 if ($l->{POINTER_TYPE} ne "ref") {
674                         $self->deindent;
675                         $self->pidl("}");
676                 }
677         } elsif ($l->{TYPE} eq "ARRAY") {
678                 if (is_charset_array($e, $l)) {
679                         $self->pidl(get_pointer_to($var_name) . " = PyString_AsString(PyUnicode_AsEncodedString($py_var, \"utf-8\", \"ignore\"));");
680                 } else {
681                         my $counter = "$e->{NAME}_cntr_$l->{LEVEL_INDEX}";
682                         $self->pidl("{");
683                         $self->indent;
684                         $self->pidl("int $counter;");
685                         $self->pidl("$var_name = talloc_array_ptrtype($mem_ctx, $var_name, PyList_Size($py_var));");
686                         $self->pidl("for ($counter = 0; $counter < PyList_Size($py_var); $counter++) {");
687                         $self->indent;
688                         $self->ConvertObjectFromPythonLevel($env, $var_name, "PyList_GetItem($py_var, $counter)", $e, GetNextLevel($e, $l), $var_name."[$counter]", $fail);
689                         $self->deindent;
690                         $self->pidl("}");
691                         $self->deindent;
692                         $self->pidl("}");
693                 }
694         } elsif ($l->{TYPE} eq "DATA") {
695
696                 if (not Parse::Pidl::Typelist::is_scalar($l->{DATA_TYPE}) or 
697                         Parse::Pidl::Typelist::scalar_is_reference($l->{DATA_TYPE})) {
698                         $var_name = get_pointer_to($var_name);
699                 }
700                 $self->ConvertObjectFromPythonData($mem_ctx, $py_var, $l->{DATA_TYPE}, $var_name, $fail);
701         } elsif ($l->{TYPE} eq "SWITCH") {
702                 $var_name = get_pointer_to($var_name);
703                 my $switch = ParseExpr($l->{SWITCH_IS}, $env, $e);
704                 $self->pidl("$var_name = py_export_" . GetNextLevel($e, $l)->{DATA_TYPE} . "($mem_ctx, $switch, $py_var);");
705         } elsif ($l->{TYPE} eq "SUBCONTEXT") {
706                 $self->pidl("#error Subcontext not yet supported");
707         } else {
708                 die("unknown level type $l->{TYPE}");
709         }
710 }
711
712 sub ConvertObjectFromPython($$$$$$$)
713 {
714         my ($self, $env, $mem_ctx, $ctype, $cvar, $target, $fail) = @_;
715
716         $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $cvar, $ctype, $ctype->{LEVELS}[0], $target, $fail);
717 }
718
719 sub ConvertScalarToPython($$$)
720 {
721         my ($self, $ctypename, $cvar) = @_;
722
723         die("expected string for $cvar, not $ctypename") if (ref($ctypename) eq "HASH");
724
725         $ctypename = expandAlias($ctypename);
726
727         if ($ctypename =~ /^(int|long|char|u?int[0-9]+|hyper|dlong|udlong|udlongr|time_t|NTTIME_hyper|NTTIME|NTTIME_1sec)$/) {
728                 return "PyInt_FromLong($cvar)";
729         }
730
731         if ($ctypename eq "DATA_BLOB") {
732                 return "PyString_FromStringAndSize($cvar->data, $cvar->length)";
733         }
734
735         if ($ctypename eq "NTSTATUS") {
736                 return "PyInt_FromLong(NT_STATUS_V($cvar))";
737         }
738
739         if ($ctypename eq "WERROR") {
740                 return "PyInt_FromLong(W_ERROR_V($cvar))";
741         }
742
743         if (($ctypename eq "string" or $ctypename eq "nbt_string" or $ctypename eq "nbt_name" or $ctypename eq "wrepl_nbt_name")) {
744                 return "PyString_FromString($cvar)";
745         }
746
747         # Not yet supported
748         if ($ctypename eq "string_array") { return "PyCObject_FromVoidPtr($cvar)"; }
749         if ($ctypename eq "ipv4address") { return "PyCObject_FromVoidPtr($cvar)"; }
750         if ($ctypename eq "pointer") {
751                 return "PyCObject_FromVoidPtr($cvar, talloc_free)";
752         }
753
754         die("Unknown scalar type $ctypename");
755 }
756
757 sub ConvertObjectToPythonData($$$$)
758 {
759         my ($self, $ctype, $cvar) = @_;
760
761         die("undef type for $cvar") unless(defined($ctype));
762
763         if (ref($ctype) ne "HASH") {
764                 if (not hasType($ctype)) {
765                         if (ref($ctype) eq "HASH") {
766                                 return "py_import_$ctype->{TYPE}_$ctype->{NAME}($cvar)";
767                         } else {
768                                 return "py_import_$ctype($cvar)"; # best bet
769                         }
770                 }
771
772                 $ctype = getType($ctype);
773         }
774
775         my $actual_ctype = $ctype;
776         if ($ctype->{TYPE} eq "TYPEDEF") {
777                 $actual_ctype = $ctype->{DATA};
778         }
779
780         if ($actual_ctype->{TYPE} eq "ENUM") {
781                 return $self->ConvertScalarToPython(Parse::Pidl::Typelist::enum_type_fn($actual_ctype), $cvar);
782         }
783
784         if ($actual_ctype->{TYPE} eq "BITMAP") {
785                 return $self->ConvertScalarToPython(Parse::Pidl::Typelist::bitmap_type_fn($actual_ctype), $cvar);
786         }
787
788         if ($actual_ctype->{TYPE} eq "SCALAR") {
789                 return $self->ConvertScalarToPython($actual_ctype->{NAME}, $cvar);
790         }
791
792         if ($actual_ctype->{TYPE} eq "STRUCT") {
793                 # FIXME: if $cvar is not a pointer, do a talloc_dup()
794                 return "py_talloc_import(&$ctype->{NAME}_Type, $cvar)";
795         }
796
797         die("unknown type ".mapTypeName($ctype) . ": $cvar");
798 }
799
800 sub ConvertObjectToPythonLevel($$$$)
801 {
802         my ($self, $env, $e, $l, $var_name, $py_var) = @_;
803
804         if ($l->{TYPE} eq "POINTER") {
805                 if ($l->{POINTER_TYPE} ne "ref") {
806                         $self->pidl("if ($var_name == NULL) {");
807                         $self->indent;
808                         $self->pidl("$py_var = Py_None;");
809                         $self->deindent;
810                         $self->pidl("} else {");
811                         $self->indent;
812                 }
813                 $self->ConvertObjectToPythonLevel($env, $e, GetNextLevel($e, $l), get_value_of($var_name), $py_var);
814                 if ($l->{POINTER_TYPE} ne "ref") {
815                         $self->deindent;
816                         $self->pidl("}");
817                 }
818         } elsif ($l->{TYPE} eq "ARRAY") {
819                 if (is_charset_array($e, $l)) {
820                         $var_name = get_pointer_to($var_name);
821                         $self->pidl("$py_var = PyUnicode_Decode($var_name, strlen($var_name), \"utf-8\", \"ignore\");");
822                 } else {
823                         die("No SIZE_IS for array $var_name") unless (defined($l->{SIZE_IS}));
824                         my $length = $l->{SIZE_IS};
825                         if (defined($l->{LENGTH_IS})) {
826                                 $length = $l->{LENGTH_IS};
827                         }
828
829                         $length = ParseExpr($length, $env, $e);
830                         $self->pidl("$py_var = PyList_New($length);");
831                         $self->pidl("{");
832                         $self->indent;
833                         my $counter = "$e->{NAME}_cntr_$l->{LEVEL_INDEX}";
834                         $self->pidl("int $counter;");
835                         $self->pidl("for ($counter = 0; $counter < $length; $counter++) {");
836                         $self->indent;
837                         my $member_var = "py_$e->{NAME}_$l->{LEVEL_INDEX}";
838                         $self->pidl("PyObject *$member_var;");
839                         $self->ConvertObjectToPythonLevel($env, $e, GetNextLevel($e, $l), $var_name."[$counter]", $member_var);
840                         $self->pidl("PyList_SetItem($py_var, $counter, $member_var);");
841                         $self->deindent;
842                         $self->pidl("}");
843                         $self->deindent;
844                         $self->pidl("}");
845                 }
846         } elsif ($l->{TYPE} eq "SWITCH") {
847                 $var_name = get_pointer_to($var_name);
848                 my $switch = ParseExpr($l->{SWITCH_IS}, $env, $e);
849                 $self->pidl("$py_var = py_import_" . GetNextLevel($e, $l)->{DATA_TYPE} . "($switch, $var_name);");
850         } elsif ($l->{TYPE} eq "DATA") {
851                 if (not Parse::Pidl::Typelist::is_scalar($l->{DATA_TYPE}) or 
852                         Parse::Pidl::Typelist::scalar_is_reference($l->{DATA_TYPE})) {
853                         $var_name = get_pointer_to($var_name);
854                 }
855                 my $conv = $self->ConvertObjectToPythonData($l->{DATA_TYPE}, $var_name);
856                 $self->pidl("$py_var = $conv;");
857         } elsif ($l->{TYPE} eq "SUBCONTEXT") {
858                 $self->pidl("FIXME");
859         } else {
860                 die("Unknown level type $l->{TYPE} $var_name");
861         }
862 }
863
864 sub ConvertObjectToPython($$$$$)
865 {
866         my ($self, $env, $ctype, $cvar, $py_var) = @_;
867
868         $self->ConvertObjectToPythonLevel($env, $ctype, $ctype->{LEVELS}[0], $cvar, $py_var);
869 }
870
871 sub Parse($$$$$)
872 {
873     my($self,$basename,$ndr,$ndr_hdr,$hdr) = @_;
874     
875     my $py_hdr = $hdr;
876     $py_hdr =~ s/ndr_([^\/]+)$/py_$1/g;
877
878     $self->pidl_hdr("/* header auto-generated by pidl */\n\n");
879         
880     $self->pidl("
881 /* Python wrapper functions auto-generated by pidl */
882 #include \"includes.h\"
883 #include <Python.h>
884 #include \"librpc/rpc/dcerpc.h\"
885 #include \"scripting/python/pytalloc.h\"
886 #include \"$hdr\"
887 #include \"$ndr_hdr\"
888 #include \"$py_hdr\"
889
890 #define PY_CHECK_TYPE(type, var, fail) \\
891         if (!type ## _Check(var)) {\\
892                 PyErr_Format(PyExc_TypeError, \"Expected type %s\", type ## _Type.tp_name); \\
893                 fail; \\
894         }
895 ");
896
897         foreach my $x (@$ndr) {
898             ($x->{TYPE} eq "INTERFACE") && $self->Interface($x, $basename);
899                 ($x->{TYPE} eq "IMPORT") && $self->Import(@{$x->{PATHS}});
900         }
901         
902         $self->pidl("static PyMethodDef $basename\_methods[] = {");
903         $self->indent;
904         foreach (@{$self->{module_methods}}) {
905                 my ($fn_name, $pyfn_name, $flags, $doc) = @$_;
906                 $self->pidl("{ \"$fn_name\", (PyCFunction)$pyfn_name, $flags, $doc },");
907         }
908         
909         $self->pidl("{ NULL, NULL, 0, NULL }");
910         $self->deindent;
911         $self->pidl("};");
912
913         $self->pidl("");
914
915         $self->pidl("void init$basename(void)");
916         $self->pidl("{");
917         $self->indent;
918         $self->pidl("PyObject *m;");
919         $self->pidl("m = Py_InitModule(\"$basename\", $basename\_methods);");
920         foreach my $name (keys %{$self->{constants}}) {
921                 my $py_obj;
922                 my ($ctype, $cvar) = @{$self->{constants}->{$name}};
923                 if ($cvar =~ /^[0-9]+$/ or $cvar =~ /^0x[0-9a-fA-F]+$/) {
924                         $py_obj = "PyInt_FromLong($cvar)";
925                 } elsif ($cvar =~ /^".*"$/) {
926                         $py_obj = "PyString_FromString($cvar)";
927                 } else {
928                         $py_obj = $self->ConvertObjectToPythonData($ctype, $cvar);
929                 }
930
931                 $self->pidl("PyModule_AddObject(m, \"$name\", $py_obj);");
932         }
933         $self->deindent;
934         $self->pidl("}");
935     return ($self->{res_hdr}, $self->{res});
936 }
937
938 1;