################################################### # Python function wrapper generator # Copyright jelmer@samba.org 2007-2008 # released under the GNU GPL package Parse::Pidl::Samba4::Python; use Exporter; @ISA = qw(Exporter); use strict; use Parse::Pidl qw(warning fatal error); use Parse::Pidl::Typelist qw(hasType resolveType getType mapTypeName expandAlias); use Parse::Pidl::Util qw(has_property ParseExpr unmake_str); use Parse::Pidl::NDR qw(GetPrevLevel GetNextLevel ContainsDeferred is_charset_array); use Parse::Pidl::CUtil qw(get_value_of get_pointer_to); use Parse::Pidl::Samba4 qw(ArrayDynamicallyAllocated); use Parse::Pidl::Samba4::Header qw(GenerateFunctionInEnv GenerateFunctionOutEnv EnvSubstituteValue GenerateStructEnv); use vars qw($VERSION); $VERSION = '0.01'; sub new($) { my ($class) = @_; my $self = { res => "", res_hdr => "", tabs => "", constants => {}, module_methods => [], module_objects => [], ready_types => [], module_imports => [], type_imports => {}, patch_type_calls => [], prereadycode => [], postreadycode => []}; bless($self, $class); } sub pidl_hdr ($$) { my $self = shift; $self->{res_hdr} .= shift; } sub pidl($$) { my ($self, $d) = @_; if ($d) { if ((!($d =~ /^#/))) { $self->{res} .= $self->{tabs}; } $self->{res} .= $d; } $self->{res} .= "\n"; } sub indent($) { my ($self) = @_; $self->{tabs} .= "\t"; } sub deindent($) { my ($self) = @_; $self->{tabs} = substr($self->{tabs}, 0, -1); } sub PrettifyTypeName($$) { my ($name, $basename) = @_; $name =~ s/^$basename\_//; return $name; } sub Import { my $self = shift; my @imports = @_; foreach (@imports) { $_ = unmake_str($_); s/\.idl$//; $self->pidl_hdr("#include \"librpc/gen_ndr/$_\.h\"\n"); $self->register_module_import($_); } } sub Const($$) { my ($self, $const) = @_; $self->register_constant($const->{NAME}, $const->{DTYPE}, $const->{VALUE}); } sub register_constant($$$$) { my ($self, $name, $type, $value) = @_; $self->{constants}->{$name} = [$type, $value]; } sub EnumAndBitmapConsts($$$) { my ($self, $name, $d) = @_; return unless (defined($d->{ELEMENTS})); foreach my $e (@{$d->{ELEMENTS}}) { $e =~ /^([A-Za-z0-9_]+)/; my $cname = $1; $self->register_constant($cname, $d, $cname); } } sub FromUnionToPythonFunction($$$$) { my ($self, $mem_ctx, $type, $switch, $name) = @_; $self->pidl("PyObject *ret;"); $self->pidl(""); $self->pidl("switch ($switch) {"); $self->indent; foreach my $e (@{$type->{ELEMENTS}}) { $self->pidl("$e->{CASE}:"); $self->indent; if ($e->{NAME}) { $self->ConvertObjectToPython($mem_ctx, {}, $e, "$name->$e->{NAME}", "ret", "return NULL;"); } else { $self->pidl("ret = Py_None;"); $self->pidl("Py_INCREF(ret);"); } $self->pidl("return ret;"); $self->pidl(""); $self->deindent; } $self->deindent; $self->pidl("}"); $self->pidl("PyErr_SetString(PyExc_TypeError, \"unknown union level\");"); $self->pidl("return NULL;"); } sub FromPythonToUnionFunction($$$$$) { my ($self, $type, $typename, $switch, $mem_ctx, $name) = @_; my $has_default = 0; $self->pidl("$typename *ret = talloc_zero($mem_ctx, $typename);"); $self->pidl("switch ($switch) {"); $self->indent; foreach my $e (@{$type->{ELEMENTS}}) { $self->pidl("$e->{CASE}:"); if ($e->{CASE} eq "default") { $has_default = 1; } $self->indent; if ($e->{NAME}) { $self->ConvertObjectFromPython({}, $mem_ctx, $e, $name, "ret->$e->{NAME}", "talloc_free(ret); return NULL;"); } $self->pidl("break;"); $self->deindent; $self->pidl(""); } if (!$has_default) { $self->pidl("default:"); $self->indent; $self->pidl("PyErr_SetString(PyExc_TypeError, \"invalid union level value\");"); $self->pidl("talloc_free(ret);"); $self->pidl("ret = NULL;"); $self->deindent; } $self->deindent; $self->pidl("}"); $self->pidl(""); $self->pidl("return ret;"); } sub PythonStruct($$$$$$) { my ($self, $modulename, $prettyname, $name, $cname, $d) = @_; my $env = GenerateStructEnv($d, "object"); $self->pidl(""); my $getsetters = "NULL"; if ($#{$d->{ELEMENTS}} > -1) { foreach my $e (@{$d->{ELEMENTS}}) { my $varname = "object->$e->{NAME}"; $self->pidl("static PyObject *py_$name\_get_$e->{NAME}(PyObject *obj, void *closure)"); $self->pidl("{"); $self->indent; $self->pidl("$cname *object = ($cname *)py_talloc_get_ptr(obj);"); $self->pidl("PyObject *py_$e->{NAME};"); $self->ConvertObjectToPython("py_talloc_get_mem_ctx(obj)", $env, $e, $varname, "py_$e->{NAME}", "return NULL;"); $self->pidl("return py_$e->{NAME};"); $self->deindent; $self->pidl("}"); $self->pidl(""); $self->pidl("static int py_$name\_set_$e->{NAME}(PyObject *py_obj, PyObject *value, void *closure)"); $self->pidl("{"); $self->indent; $self->pidl("$cname *object = ($cname *)py_talloc_get_ptr(py_obj);"); my $mem_ctx = "py_talloc_get_mem_ctx(py_obj)"; my $l = $e->{LEVELS}[0]; my $nl = GetNextLevel($e, $l); if ($l->{TYPE} eq "POINTER" and not ($nl->{TYPE} eq "ARRAY" and ($nl->{IS_FIXED} or is_charset_array($e, $nl))) and not ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE}))) { $self->pidl("talloc_unlink(py_talloc_get_mem_ctx(py_obj), $varname);"); } $self->ConvertObjectFromPython($env, $mem_ctx, $e, "value", $varname, "return -1;"); $self->pidl("return 0;"); $self->deindent; $self->pidl("}"); $self->pidl(""); } $getsetters = "py_$name\_getsetters"; $self->pidl("static PyGetSetDef ".$getsetters."[] = {"); $self->indent; foreach my $e (@{$d->{ELEMENTS}}) { $self->pidl("{ discard_const_p(char, \"$e->{NAME}\"), py_$name\_get_$e->{NAME}, py_$name\_set_$e->{NAME} },"); } $self->pidl("{ NULL }"); $self->deindent; $self->pidl("};"); $self->pidl(""); } $self->pidl("static PyObject *py_$name\_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)"); $self->pidl("{"); $self->indent; $self->pidl("return py_talloc_new($cname, type);"); $self->deindent; $self->pidl("}"); $self->pidl(""); my $py_methods = "NULL"; # If the struct is not public there ndr_pull/ndr_push functions will # be static so not callable from here if (has_property($d, "public")) { $self->pidl("static PyObject *py_$name\_ndr_pack(PyObject *py_obj)"); $self->pidl("{"); $self->indent; $self->pidl("$cname *object = ($cname *)py_talloc_get_ptr(py_obj);"); $self->pidl("DATA_BLOB blob;"); $self->pidl("enum ndr_err_code err;"); $self->pidl("err = ndr_push_struct_blob(&blob, py_talloc_get_mem_ctx(py_obj), object, (ndr_push_flags_fn_t)ndr_push_$name);"); $self->pidl("if (err != NDR_ERR_SUCCESS) {"); $self->indent; $self->pidl("PyErr_SetNdrError(err);"); $self->pidl("return NULL;"); $self->deindent; $self->pidl("}"); $self->pidl(""); $self->pidl("return PyString_FromStringAndSize((char *)blob.data, blob.length);"); $self->deindent; $self->pidl("}"); $self->pidl(""); $self->pidl("static PyObject *py_$name\_ndr_unpack(PyObject *py_obj, PyObject *args)"); $self->pidl("{"); $self->indent; $self->pidl("$cname *object = ($cname *)py_talloc_get_ptr(py_obj);"); $self->pidl("DATA_BLOB blob;"); $self->pidl("enum ndr_err_code err;"); $self->pidl("if (!PyArg_ParseTuple(args, \"s#:__ndr_unpack__\", &blob.data, &blob.length))"); $self->pidl("\treturn NULL;"); $self->pidl(""); $self->pidl("err = ndr_pull_struct_blob_all(&blob, py_talloc_get_mem_ctx(py_obj), object, (ndr_pull_flags_fn_t)ndr_pull_$name);"); $self->pidl("if (err != NDR_ERR_SUCCESS) {"); $self->indent; $self->pidl("PyErr_SetNdrError(err);"); $self->pidl("return NULL;"); $self->deindent; $self->pidl("}"); $self->pidl(""); $self->pidl("Py_RETURN_NONE;"); $self->deindent; $self->pidl("}"); $self->pidl(""); $self->pidl("static PyObject *py_$name\_ndr_print(PyObject *py_obj)"); $self->pidl("{"); $self->indent; $self->pidl("$cname *object = ($cname *)py_talloc_get_ptr(py_obj);"); $self->pidl("char *retstr;"); $self->pidl("retstr = ndr_print_struct_string(py_talloc_get_mem_ctx(py_obj), (ndr_print_fn_t)ndr_print_$name, \"$name\", object);"); $self->pidl("return PyString_FromString(retstr);"); $self->deindent; $self->pidl("}"); $self->pidl(""); $py_methods = "py_$name\_methods"; $self->pidl("static PyMethodDef $py_methods\[] = {"); $self->indent; $self->pidl("{ \"__ndr_pack__\", (PyCFunction)py_$name\_ndr_pack, METH_NOARGS, \"S.ndr_pack(object) -> blob\\nNDR pack\" },"); $self->pidl("{ \"__ndr_unpack__\", (PyCFunction)py_$name\_ndr_unpack, METH_VARARGS, \"S.ndr_unpack(class, blob) -> None\\nNDR unpack\" },"); $self->pidl("{ \"__ndr_print__\", (PyCFunction)py_$name\_ndr_print, METH_VARARGS, \"S.ndr_print(object) -> None\\nNDR print\" },"); $self->pidl("{ NULL, NULL, 0, NULL }"); $self->deindent; $self->pidl("};"); $self->pidl(""); } $self->pidl_hdr("staticforward PyTypeObject $name\_Type;\n"); $self->pidl(""); my $docstring = $self->DocString($d, $name); my $typeobject = "$name\_Type"; $self->pidl("static PyTypeObject $typeobject = {"); $self->indent; $self->pidl("PyObject_HEAD_INIT(NULL) 0,"); $self->pidl(".tp_name = \"$modulename.$prettyname\","); $self->pidl(".tp_basicsize = sizeof(py_talloc_Object),"); $self->pidl(".tp_dealloc = py_talloc_dealloc,"); $self->pidl(".tp_getset = $getsetters,"); $self->pidl(".tp_repr = py_talloc_default_repr,"); if ($docstring) { $self->pidl(".tp_doc = $docstring,"); } $self->pidl(".tp_methods = $py_methods,"); $self->pidl(".tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,"); $self->pidl(".tp_new = py_$name\_new,"); $self->deindent; $self->pidl("};"); $self->pidl(""); return "&$typeobject"; } sub get_metadata_var($) { my ($e) = @_; sub get_var($) { my $x = shift; $x =~ s/\*//g; return $x; } if (has_property($e, "length_is")) { return get_var($e->{PROPERTIES}->{length_is}); } elsif (has_property($e, "size_is")) { return get_var($e->{PROPERTIES}->{size_is}); } return undef; } sub find_metadata_args($) { my ($fn) = @_; my $metadata_args = { in => {}, out => {} }; # Determine arguments that are metadata for other arguments (size_is/length_is) foreach my $e (@{$fn->{ELEMENTS}}) { foreach my $dir (@{$e->{DIRECTION}}) { my $main = get_metadata_var($e); if ($main) { $metadata_args->{$dir}->{$main} = $e->{NAME}; } } } return $metadata_args; } sub PythonFunctionUnpackOut($$$) { my ($self, $fn, $fnname) = @_; my $outfnname = "unpack_$fnname\_args_out"; my $signature = ""; my $metadata_args = find_metadata_args($fn); my $env = GenerateFunctionOutEnv($fn, "r->"); my $result_size = 0; $self->pidl("static PyObject *$outfnname(struct $fn->{NAME} *r)"); $self->pidl("{"); $self->indent; $self->pidl("PyObject *result;"); foreach my $e (@{$fn->{ELEMENTS}}) { next unless (grep(/out/,@{$e->{DIRECTION}})); next if (($metadata_args->{in}->{$e->{NAME}} and grep(/in/, @{$e->{DIRECTION}})) or ($metadata_args->{out}->{$e->{NAME}}) and grep(/out/, @{$e->{DIRECTION}})); $self->pidl("PyObject *py_$e->{NAME};"); $result_size++; } if ($fn->{RETURN_TYPE}) { $result_size++ unless ($fn->{RETURN_TYPE} eq "WERROR" or $fn->{RETURN_TYPE} eq "NTSTATUS"); } my $i = 0; if ($result_size > 1) { $self->pidl("result = PyTuple_New($result_size);"); $signature .= "("; } elsif ($result_size == 0) { $self->pidl("result = Py_None;"); $self->pidl("Py_INCREF(result);"); $signature .= "None"; } foreach my $e (@{$fn->{ELEMENTS}}) { next if ($metadata_args->{out}->{$e->{NAME}}); my $py_name = "py_$e->{NAME}"; if (grep(/out/,@{$e->{DIRECTION}})) { $self->ConvertObjectToPython("r", $env, $e, "r->out.$e->{NAME}", $py_name, "return NULL;"); if ($result_size > 1) { $self->pidl("PyTuple_SetItem(result, $i, $py_name);"); $i++; $signature .= "$e->{NAME}, "; } else { $self->pidl("result = $py_name;"); $signature .= $e->{NAME}; } } } if (defined($fn->{RETURN_TYPE}) and $fn->{RETURN_TYPE} eq "NTSTATUS") { $self->handle_ntstatus("r->out.result", "NULL", undef); } elsif (defined($fn->{RETURN_TYPE}) and $fn->{RETURN_TYPE} eq "WERROR") { $self->handle_werror("r->out.result", "NULL", undef); } elsif (defined($fn->{RETURN_TYPE})) { my $conv = $self->ConvertObjectToPythonData("r", $fn->{RETURN_TYPE}, "r->out.result", $fn); if ($result_size > 1) { $self->pidl("PyTuple_SetItem(result, $i, $conv);"); } else { $self->pidl("result = $conv;"); } $signature .= "result"; } if (substr($signature, -2) eq ", ") { $signature = substr($signature, 0, -2); } if ($result_size > 1) { $signature .= ")"; } $self->pidl("return result;"); $self->deindent; $self->pidl("}"); $self->pidl(""); return ($outfnname, $signature); } sub PythonFunctionPackIn($$$) { my ($self, $fn, $fnname) = @_; my $metadata_args = find_metadata_args($fn); my $infnname = "pack_$fnname\_args_in"; $self->pidl("static bool $infnname(PyObject *args, PyObject *kwargs, struct $fn->{NAME} *r)"); $self->pidl("{"); $self->indent; my $args_format = ""; my $args_string = ""; my $args_names = ""; my $signature = ""; foreach my $e (@{$fn->{ELEMENTS}}) { next unless (grep(/in/,@{$e->{DIRECTION}})); next if (($metadata_args->{in}->{$e->{NAME}} and grep(/in/, @{$e->{DIRECTION}})) or ($metadata_args->{out}->{$e->{NAME}}) and grep(/out/, @{$e->{DIRECTION}})); $self->pidl("PyObject *py_$e->{NAME};"); $args_format .= "O"; $args_string .= ", &py_$e->{NAME}"; $args_names .= "\"$e->{NAME}\", "; $signature .= "$e->{NAME}, "; } if (substr($signature, -2) eq ", ") { $signature = substr($signature, 0, -2); } $self->pidl("const char *kwnames[] = {"); $self->indent; $self->pidl($args_names . "NULL"); $self->deindent; $self->pidl("};"); $self->pidl(""); $self->pidl("if (!PyArg_ParseTupleAndKeywords(args, kwargs, \"$args_format:$fn->{NAME}\", discard_const_p(char *, kwnames)$args_string)) {"); $self->indent; $self->pidl("return false;"); $self->deindent; $self->pidl("}"); $self->pidl(""); my $env = GenerateFunctionInEnv($fn, "r->"); my $fail = "return false;"; foreach my $e (@{$fn->{ELEMENTS}}) { next unless (grep(/in/,@{$e->{DIRECTION}})); if ($metadata_args->{in}->{$e->{NAME}}) { my $py_var = "py_".$metadata_args->{in}->{$e->{NAME}}; $self->pidl("PY_CHECK_TYPE(&PyList_Type, $py_var, $fail);"); my $val = "PyList_Size($py_var)"; if ($e->{LEVELS}[0]->{TYPE} eq "POINTER") { $self->pidl("r->in.$e->{NAME} = talloc_ptrtype(r, r->in.$e->{NAME});"); $self->pidl("*r->in.$e->{NAME} = $val;"); } else { $self->pidl("r->in.$e->{NAME} = $val;"); } } else { $self->ConvertObjectFromPython($env, "r", $e, "py_$e->{NAME}", "r->in.$e->{NAME}", $fail); } } $self->pidl("return true;"); $self->deindent; $self->pidl("}"); $self->pidl(""); return ($infnname, $signature); } sub PythonFunction($$$) { my ($self, $fn, $iface, $prettyname) = @_; my $fnname = "py_$fn->{NAME}"; my $docstring = $self->DocString($fn, $fn->{NAME}); my ($insignature, $outsignature); my ($infn, $outfn); if (has_property($fn, "todo")) { unless ($docstring) { $docstring = "NULL"; } $infn = "NULL"; $outfn = "NULL"; } else { ($infn, $insignature) = $self->PythonFunctionPackIn($fn, $fnname); ($outfn, $outsignature) = $self->PythonFunctionUnpackOut($fn, $fnname); my $signature = "S.$prettyname($insignature) -> $outsignature"; if ($docstring) { $docstring = "\"$signature\\n\\n\"$docstring"; } else { $docstring = "\"$signature\""; } } return ($infn, $outfn, $docstring); } sub handle_werror($$$$) { my ($self, $var, $retval, $mem_ctx) = @_; $self->pidl("if (!W_ERROR_IS_OK($var)) {"); $self->indent; $self->pidl("PyErr_SetWERROR($var);"); $self->pidl("talloc_free($mem_ctx);") if ($mem_ctx); $self->pidl("return $retval;"); $self->deindent; $self->pidl("}"); $self->pidl(""); } sub handle_ntstatus($$$$) { my ($self, $var, $retval, $mem_ctx) = @_; $self->pidl("if (NT_STATUS_IS_ERR($var)) {"); $self->indent; $self->pidl("PyErr_SetNTSTATUS($var);"); $self->pidl("talloc_free($mem_ctx);") if ($mem_ctx); $self->pidl("return $retval;"); $self->deindent; $self->pidl("}"); $self->pidl(""); } sub PythonType($$$$) { my ($self, $modulename, $d, $interface, $basename) = @_; my $actual_ctype = $d; if ($actual_ctype->{TYPE} eq "TYPEDEF") { $actual_ctype = $actual_ctype->{DATA}; } if ($actual_ctype->{TYPE} eq "STRUCT") { my $typeobject; my $fn_name = PrettifyTypeName($d->{NAME}, $basename); if ($d->{TYPE} eq "STRUCT") { $typeobject = $self->PythonStruct($modulename, $fn_name, $d->{NAME}, mapTypeName($d), $d); } else { $typeobject = $self->PythonStruct($modulename, $fn_name, $d->{NAME}, mapTypeName($d), $d->{DATA}); } $self->register_module_typeobject($fn_name, $typeobject); } if ($d->{TYPE} eq "ENUM" or $d->{TYPE} eq "BITMAP") { $self->EnumAndBitmapConsts($d->{NAME}, $d); } if ($d->{TYPE} eq "TYPEDEF" and ($d->{DATA}->{TYPE} eq "ENUM" or $d->{DATA}->{TYPE} eq "BITMAP")) { $self->EnumAndBitmapConsts($d->{NAME}, $d->{DATA}); } if ($actual_ctype->{TYPE} eq "UNION" and defined($actual_ctype->{ELEMENTS})) { $self->pidl("PyObject *py_import_$d->{NAME}(TALLOC_CTX *mem_ctx, int level, " .mapTypeName($d) . " *in)"); $self->pidl("{"); $self->indent; $self->FromUnionToPythonFunction("mem_ctx", $actual_ctype, "level", "in") if ($actual_ctype->{TYPE} eq "UNION"); $self->deindent; $self->pidl("}"); $self->pidl(""); $self->pidl(mapTypeName($d) . " *py_export_$d->{NAME}(TALLOC_CTX *mem_ctx, int level, PyObject *in)"); $self->pidl("{"); $self->indent; $self->FromPythonToUnionFunction($actual_ctype, mapTypeName($d), "level", "mem_ctx", "in") if ($actual_ctype->{TYPE} eq "UNION"); $self->deindent; $self->pidl("}"); $self->pidl(""); } } sub DocString($$$) { my ($self, $d, $name) = @_; if (has_property($d, "helpstring")) { my $docstring = uc("py_doc_$name"); $self->pidl("#define $docstring ".has_property($d, "helpstring")); return $docstring; } return undef; } sub Interface($$$) { my($self,$interface,$basename) = @_; if (has_property($interface, "pyhelper")) { $self->pidl("#include \"".unmake_str($interface->{PROPERTIES}->{pyhelper})."\"\n"); } $self->Const($_) foreach (@{$interface->{CONSTS}}); foreach my $d (@{$interface->{TYPES}}) { next if has_property($d, "nopython"); $self->PythonType($basename, $d, $interface, $basename); } if (defined $interface->{PROPERTIES}->{uuid}) { $self->pidl_hdr("staticforward PyTypeObject $interface->{NAME}_InterfaceType;\n"); $self->pidl(""); my @fns = (); foreach my $d (@{$interface->{FUNCTIONS}}) { next if not defined($d->{OPNUM}); next if has_property($d, "nopython"); next if has_property($d, "todo"); my $prettyname = $d->{NAME}; $prettyname =~ s/^$interface->{NAME}_//; $prettyname =~ s/^$basename\_//; my ($infn, $outfn, $fndocstring) = $self->PythonFunction($d, $interface->{NAME}, $prettyname); push (@fns, [$infn, $outfn, "dcerpc_$d->{NAME}_r", $prettyname, $fndocstring, $d->{OPNUM}]); } $self->pidl("const struct PyNdrRpcMethodDef py_ndr_$interface->{NAME}\_methods[] = {"); $self->indent; foreach my $d (@fns) { my ($infn, $outfn, $callfn, $prettyname, $docstring, $opnum) = @$d; $self->pidl("{ \"$prettyname\", $docstring, (py_dcerpc_call_fn)$callfn, (py_data_pack_fn)$infn, (py_data_unpack_fn)$outfn, $opnum, &ndr_table_$interface->{NAME} },"); } $self->pidl("{ NULL }"); $self->deindent; $self->pidl("};"); $self->pidl(""); $self->pidl("static PyObject *interface_$interface->{NAME}_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)"); $self->pidl("{"); $self->indent; $self->pidl("return py_dcerpc_interface_init_helper(type, args, kwargs, &ndr_table_$interface->{NAME});"); $self->deindent; $self->pidl("}"); $self->pidl(""); my $signature = "\"$interface->{NAME}(binding, lp_ctx=None, credentials=None) -> connection\\n\" \"\\n\" \"binding should be a DCE/RPC binding string (for example: ncacn_ip_tcp:127.0.0.1)\\n\" \"lp_ctx should be a path to a smb.conf file or a param.LoadParm object\\n\" \"credentials should be a credentials.Credentials object.\\n\\n\""; my $docstring = $self->DocString($interface, $interface->{NAME}); if ($docstring) { $docstring = "$signature$docstring"; } else { $docstring = $signature; } my $if_typename = "$interface->{NAME}_InterfaceType"; $self->pidl("static PyTypeObject $if_typename = {"); $self->indent; $self->pidl("PyObject_HEAD_INIT(NULL) 0,"); $self->pidl(".tp_name = \"$basename.$interface->{NAME}\","); $self->pidl(".tp_basicsize = sizeof(dcerpc_InterfaceObject),"); $self->pidl(".tp_doc = $docstring,"); $self->pidl(".tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,"); $self->pidl(".tp_new = interface_$interface->{NAME}_new,"); $self->deindent; $self->pidl("};"); $self->pidl(""); $self->register_module_typeobject($interface->{NAME}, "&$if_typename"); my $dcerpc_typename = $self->import_type_variable("base", "ClientConnection"); $self->register_module_prereadycode(["$if_typename.tp_base = $dcerpc_typename;", ""]); $self->register_module_postreadycode(["if (!PyInterface_AddNdrRpcMethods(&$if_typename, py_ndr_$interface->{NAME}\_methods))", "\treturn;", ""]); } $self->pidl_hdr("\n"); } sub register_module_method($$$$$) { my ($self, $fn_name, $pyfn_name, $flags, $doc) = @_; push (@{$self->{module_methods}}, [$fn_name, $pyfn_name, $flags, $doc]) } sub register_module_typeobject($$$) { my ($self, $name, $py_name) = @_; $self->register_module_object($name, "(PyObject *)(void *)$py_name"); $self->check_ready_type($py_name); $self->register_patch_type_call($name, $py_name); } sub check_ready_type($$) { my ($self, $py_name) = @_; push (@{$self->{ready_types}}, $py_name) unless (grep(/^$py_name$/,@{$self->{ready_types}})); } sub register_module_import($$) { my ($self, $basename) = @_; push (@{$self->{module_imports}}, $basename) unless (grep(/^$basename$/,@{$self->{module_imports}})); } sub import_type_variable($$$) { my ($self, $module, $name) = @_; $self->register_module_import($module); unless (defined($self->{type_imports}->{$name})) { $self->{type_imports}->{$name} = $module; } return "$name\_Type"; } sub use_type_variable($$) { my ($self, $orig_ctype) = @_; # FIXME: Have a global lookup table for types that look different on the # wire than they are named in C? if ($orig_ctype->{NAME} eq "dom_sid2" or $orig_ctype->{NAME} eq "dom_sid28") { $orig_ctype->{NAME} = "dom_sid"; } my $ctype = resolveType($orig_ctype); unless (defined($ctype->{BASEFILE})) { return undef; } # If this is an external type, make sure we do the right imports. if (($ctype->{BASEFILE} ne $self->{BASENAME})) { return $self->import_type_variable($ctype->{BASEFILE}, $ctype->{NAME}); } return "&$ctype->{NAME}_Type"; } sub register_patch_type_call($$$) { my ($self, $typename, $cvar) = @_; push(@{$self->{patch_type_calls}}, [$typename, $cvar]); } sub register_module_prereadycode($$) { my ($self, $code) = @_; push (@{$self->{prereadycode}}, @$code); } sub register_module_postreadycode($$) { my ($self, $code) = @_; push (@{$self->{postreadycode}}, @$code); } sub register_module_object($$$) { my ($self, $name, $py_name) = @_; push (@{$self->{module_objects}}, [$name, $py_name]) } sub assign($$$) { my ($self, $dest, $src) = @_; if ($dest =~ /^\&/ and $src eq "NULL") { $self->pidl("memset($dest, 0, sizeof(" . get_value_of($dest) . "));"); } elsif ($dest =~ /^\&/) { $self->pidl("memcpy($dest, $src, sizeof(" . get_value_of($dest) . "));"); } else { $self->pidl("$dest = $src;"); } } sub ConvertObjectFromPythonData($$$$$$;$) { my ($self, $mem_ctx, $cvar, $ctype, $target, $fail, $location) = @_; fatal($location, "undef type for $cvar") unless(defined($ctype)); $ctype = resolveType($ctype); my $actual_ctype = $ctype; if ($actual_ctype->{TYPE} eq "TYPEDEF") { $actual_ctype = $actual_ctype->{DATA}; } if ($actual_ctype->{TYPE} eq "ENUM" or $actual_ctype->{TYPE} eq "BITMAP") { $self->pidl("PY_CHECK_TYPE(&PyInt_Type, $cvar, $fail);"); $self->pidl("$target = PyInt_AsLong($cvar);"); return; } if ($actual_ctype->{TYPE} eq "SCALAR" ) { if (expandAlias($actual_ctype->{NAME}) =~ /^(u?int64|hyper|dlong|udlong|udlongr|NTTIME_hyper|NTTIME|NTTIME_1sec)$/) { $self->pidl("if (PyObject_TypeCheck($cvar, &PyLong_Type)) {"); $self->indent; $self->pidl("$target = PyLong_AsLongLong($cvar);"); $self->deindent; $self->pidl("} else {"); $self->indent; $self->pidl("if (PyObject_TypeCheck($cvar, &PyInt_Type)) {"); $self->indent; $self->pidl("$target = PyInt_AsLong($cvar);"); $self->deindent; $self->pidl("} else {"); $self->indent; $self->pidl("PyErr_Format(PyExc_TypeError, \"Expected type %s or %s\",\\"); $self->pidl(" PyInt_Type.tp_name, PyLong_Type.tp_name);"); $self->pidl($fail); $self->deindent; $self->pidl("}"); $self->deindent; $self->pidl("}"); return; } if (expandAlias($actual_ctype->{NAME}) =~ /^(char|u?int[0-9]*|time_t)$/) { $self->pidl("PY_CHECK_TYPE(&PyInt_Type, $cvar, $fail);"); $self->pidl("$target = PyInt_AsLong($cvar);"); return; } } if ($actual_ctype->{TYPE} eq "STRUCT" or $actual_ctype->{TYPE} eq "INTERFACE") { my $ctype_name = $self->use_type_variable($ctype); unless (defined ($ctype_name)) { error($location, "Unable to determine origin of type `" . mapTypeName($ctype) . "'"); $self->pidl("PyErr_SetString(PyExc_TypeError, \"Can not convert C Type " . mapTypeName($ctype) . " from Python\");"); return; } $self->pidl("PY_CHECK_TYPE($ctype_name, $cvar, $fail);"); $self->assign($target, "talloc_reference($mem_ctx, (".mapTypeName($ctype)." *)py_talloc_get_mem_ctx($cvar))"); return; } if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "DATA_BLOB") { $self->pidl("$target = data_blob_talloc($mem_ctx, PyString_AsString($cvar), PyString_Size($cvar));"); return; } if ($actual_ctype->{TYPE} eq "SCALAR" and ($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")) { $self->pidl("$target = talloc_strdup($mem_ctx, PyString_AsString($cvar));"); return; } if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "ipv4address") { $self->pidl("$target = PyString_AsString($cvar);"); return; } if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "dnsp_name") { $self->pidl("$target = PyString_AsString($cvar);"); return; } if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "NTSTATUS") { $self->pidl("$target = NT_STATUS(PyInt_AsLong($cvar));"); return; } if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "WERROR") { $self->pidl("$target = W_ERROR(PyInt_AsLong($cvar));"); return; } if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "string_array") { $self->pidl("$target = PyCObject_AsVoidPtr($cvar);"); return; } if ($actual_ctype->{TYPE} eq "SCALAR" and $actual_ctype->{NAME} eq "pointer") { $self->assign($target, "PyCObject_AsVoidPtr($cvar)"); return; } fatal($location, "unknown type `$actual_ctype->{TYPE}' for ".mapTypeName($ctype) . ": $cvar"); } sub ConvertObjectFromPythonLevel($$$$$$$$) { my ($self, $env, $mem_ctx, $py_var, $e, $l, $var_name, $fail) = @_; my $nl = GetNextLevel($e, $l); if ($l->{TYPE} eq "POINTER") { if ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE})) { $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $py_var, $e, $nl, $var_name, $fail); return; } if ($l->{POINTER_TYPE} ne "ref") { $self->pidl("if ($py_var == Py_None) {"); $self->indent; $self->pidl("$var_name = NULL;"); $self->deindent; $self->pidl("} else {"); $self->indent; } # if we want to handle more than one level of pointer in python interfaces # then this is where we would need to allocate it if ($l->{POINTER_TYPE} eq "ref") { $self->pidl("$var_name = talloc_ptrtype($mem_ctx, $var_name);"); } else { $self->pidl("$var_name = NULL;"); } $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $py_var, $e, $nl, get_value_of($var_name), $fail); if ($l->{POINTER_TYPE} ne "ref") { $self->deindent; $self->pidl("}"); } } elsif ($l->{TYPE} eq "ARRAY") { my $pl = GetPrevLevel($e, $l); if ($pl && $pl->{TYPE} eq "POINTER") { $var_name = get_pointer_to($var_name); } if (is_charset_array($e, $l)) { $self->pidl("PY_CHECK_TYPE(&PyUnicode_Type, $py_var, $fail);"); # FIXME: Use Unix charset setting rather than utf-8 $self->pidl($var_name . " = PyString_AsString(PyUnicode_AsEncodedString($py_var, \"utf-8\", \"ignore\"));"); } else { my $counter = "$e->{NAME}_cntr_$l->{LEVEL_INDEX}"; $self->pidl("PY_CHECK_TYPE(&PyList_Type, $py_var, $fail);"); $self->pidl("{"); $self->indent; $self->pidl("int $counter;"); if (ArrayDynamicallyAllocated($e, $l)) { $self->pidl("$var_name = talloc_array_ptrtype($mem_ctx, $var_name, PyList_Size($py_var));"); $self->pidl("if (!$var_name) { $fail; }"); $self->pidl("talloc_set_name_const($var_name, \"ARRAY: $var_name\");"); } $self->pidl("for ($counter = 0; $counter < PyList_Size($py_var); $counter++) {"); $self->indent; $self->ConvertObjectFromPythonLevel($env, $var_name, "PyList_GetItem($py_var, $counter)", $e, GetNextLevel($e, $l), $var_name."[$counter]", $fail); $self->deindent; $self->pidl("}"); $self->deindent; $self->pidl("}"); } } elsif ($l->{TYPE} eq "DATA") { if (not Parse::Pidl::Typelist::is_scalar($l->{DATA_TYPE})) { $var_name = get_pointer_to($var_name); } $self->ConvertObjectFromPythonData($mem_ctx, $py_var, $l->{DATA_TYPE}, $var_name, $fail, $e->{ORIGINAL}); } elsif ($l->{TYPE} eq "SWITCH") { $var_name = get_pointer_to($var_name); my $switch = ParseExpr($l->{SWITCH_IS}, $env, $e); my $switch_ptr = "$e->{NAME}_switch_$l->{LEVEL_INDEX}"; $self->pidl("{"); $self->indent; $self->pidl("void *$switch_ptr;"); $self->pidl("$switch_ptr = py_export_" . GetNextLevel($e, $l)->{DATA_TYPE} . "($mem_ctx, $switch, $py_var);"); $self->pidl("if ($switch_ptr == NULL) { $fail }"); $self->assign($var_name, "$switch_ptr"); $self->deindent; $self->pidl("}"); } elsif ($l->{TYPE} eq "SUBCONTEXT") { $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $py_var, $e, GetNextLevel($e, $l), $var_name, $fail); } else { fatal($e->{ORIGINAL}, "unknown level type $l->{TYPE}"); } } sub ConvertObjectFromPython($$$$$$$) { my ($self, $env, $mem_ctx, $ctype, $cvar, $target, $fail) = @_; $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $cvar, $ctype, $ctype->{LEVELS}[0], $target, $fail); } sub ConvertScalarToPython($$$) { my ($self, $ctypename, $cvar) = @_; die("expected string for $cvar, not $ctypename") if (ref($ctypename) eq "HASH"); $ctypename = expandAlias($ctypename); if ($ctypename =~ /^(u?int64|hyper|dlong|udlong|udlongr|NTTIME_hyper|NTTIME|NTTIME_1sec)$/) { return "PyLong_FromLongLong($cvar)"; } if ($ctypename =~ /^(char|u?int[0-9]*|time_t)$/) { return "PyInt_FromLong($cvar)"; } if ($ctypename eq "DATA_BLOB") { return "PyString_FromStringAndSize((char *)($cvar).data, ($cvar).length)"; } if ($ctypename eq "NTSTATUS") { return "PyErr_FromNTSTATUS($cvar)"; } if ($ctypename eq "WERROR") { return "PyErr_FromWERROR($cvar)"; } if (($ctypename eq "string" or $ctypename eq "nbt_string" or $ctypename eq "nbt_name" or $ctypename eq "wrepl_nbt_name")) { return "PyString_FromString_check_null($cvar)"; } # Not yet supported if ($ctypename eq "string_array") { return "PyCObject_FromTallocPtr($cvar)"; } if ($ctypename eq "ipv4address") { return "PyString_FromString_check_null($cvar)"; } if ($ctypename eq "dnsp_name") { return "PyString_FromString_check_null($cvar)"; } if ($ctypename eq "pointer") { return "PyCObject_FromTallocPtr($cvar)"; } die("Unknown scalar type $ctypename"); } sub ConvertObjectToPythonData($$$$$;$) { my ($self, $mem_ctx, $ctype, $cvar, $location) = @_; die("undef type for $cvar") unless(defined($ctype)); $ctype = resolveType($ctype); my $actual_ctype = $ctype; if ($actual_ctype->{TYPE} eq "TYPEDEF") { $actual_ctype = $actual_ctype->{DATA}; } if ($actual_ctype->{TYPE} eq "ENUM") { return $self->ConvertScalarToPython(Parse::Pidl::Typelist::enum_type_fn($actual_ctype), $cvar); } elsif ($actual_ctype->{TYPE} eq "BITMAP") { return $self->ConvertScalarToPython(Parse::Pidl::Typelist::bitmap_type_fn($actual_ctype), $cvar); } elsif ($actual_ctype->{TYPE} eq "SCALAR") { return $self->ConvertScalarToPython($actual_ctype->{NAME}, $cvar); } elsif ($actual_ctype->{TYPE} eq "UNION") { fatal($ctype, "union without discriminant: " . mapTypeName($ctype) . ": $cvar"); } elsif ($actual_ctype->{TYPE} eq "STRUCT" or $actual_ctype->{TYPE} eq "INTERFACE") { my $ctype_name = $self->use_type_variable($ctype); unless (defined($ctype_name)) { error($location, "Unable to determine origin of type `" . mapTypeName($ctype) . "'"); return "NULL"; # FIXME! } return "py_talloc_reference_ex($ctype_name, $mem_ctx, $cvar)"; } fatal($location, "unknown type $actual_ctype->{TYPE} for ".mapTypeName($ctype) . ": $cvar"); } sub fail_on_null($$$) { my ($self, $var, $fail) = @_; $self->pidl("if ($var == NULL) {"); $self->indent; $self->pidl($fail); $self->deindent; $self->pidl("}"); } sub ConvertObjectToPythonLevel($$$$$$) { my ($self, $mem_ctx, $env, $e, $l, $var_name, $py_var, $fail) = @_; my $nl = GetNextLevel($e, $l); if ($l->{TYPE} eq "POINTER") { if ($nl->{TYPE} eq "DATA" and Parse::Pidl::Typelist::scalar_is_reference($nl->{DATA_TYPE})) { $self->ConvertObjectToPythonLevel($var_name, $env, $e, $nl, $var_name, $py_var, $fail); return; } if ($l->{POINTER_TYPE} ne "ref") { $self->pidl("if ($var_name == NULL) {"); $self->indent; $self->pidl("$py_var = Py_None;"); $self->pidl("Py_INCREF($py_var);"); $self->deindent; $self->pidl("} else {"); $self->indent; } $self->ConvertObjectToPythonLevel($var_name, $env, $e, $nl, get_value_of($var_name), $py_var, $fail); if ($l->{POINTER_TYPE} ne "ref") { $self->deindent; $self->pidl("}"); } } elsif ($l->{TYPE} eq "ARRAY") { my $pl = GetPrevLevel($e, $l); if ($pl && $pl->{TYPE} eq "POINTER") { $var_name = get_pointer_to($var_name); } if (is_charset_array($e, $l)) { # FIXME: Use Unix charset setting rather than utf-8 $self->pidl("if ($var_name == NULL) {"); $self->indent; $self->pidl("$py_var = Py_None;"); $self->pidl("Py_INCREF($py_var);"); $self->deindent; $self->pidl("} else {"); $self->indent; $self->pidl("$py_var = PyUnicode_Decode($var_name, strlen($var_name), \"utf-8\", \"ignore\");"); $self->deindent; $self->pidl("}"); } else { die("No SIZE_IS for array $var_name") unless (defined($l->{SIZE_IS})); my $length = $l->{SIZE_IS}; if (defined($l->{LENGTH_IS})) { $length = $l->{LENGTH_IS}; } $length = ParseExpr($length, $env, $e); $self->pidl("$py_var = PyList_New($length);"); $self->fail_on_null($py_var, $fail); $self->pidl("{"); $self->indent; my $counter = "$e->{NAME}_cntr_$l->{LEVEL_INDEX}"; $self->pidl("int $counter;"); $self->pidl("for ($counter = 0; $counter < $length; $counter++) {"); $self->indent; my $member_var = "py_$e->{NAME}_$l->{LEVEL_INDEX}"; $self->pidl("PyObject *$member_var;"); $self->ConvertObjectToPythonLevel($var_name, $env, $e, GetNextLevel($e, $l), $var_name."[$counter]", $member_var, $fail); $self->pidl("PyList_SetItem($py_var, $counter, $member_var);"); $self->deindent; $self->pidl("}"); $self->deindent; $self->pidl("}"); } } elsif ($l->{TYPE} eq "SWITCH") { $var_name = get_pointer_to($var_name); my $switch = ParseExpr($l->{SWITCH_IS}, $env, $e); $self->pidl("$py_var = py_import_" . GetNextLevel($e, $l)->{DATA_TYPE} . "($mem_ctx, $switch, $var_name);"); $self->fail_on_null($py_var, $fail); } elsif ($l->{TYPE} eq "DATA") { if (not Parse::Pidl::Typelist::is_scalar($l->{DATA_TYPE})) { $var_name = get_pointer_to($var_name); } my $conv = $self->ConvertObjectToPythonData($mem_ctx, $l->{DATA_TYPE}, $var_name, $e->{ORIGINAL}); $self->pidl("$py_var = $conv;"); } elsif ($l->{TYPE} eq "SUBCONTEXT") { $self->ConvertObjectToPythonLevel($mem_ctx, $env, $e, GetNextLevel($e, $l), $var_name, $py_var, $fail); } else { fatal($e->{ORIGINAL}, "Unknown level type $l->{TYPE} $var_name"); } } sub ConvertObjectToPython($$$$$$) { my ($self, $mem_ctx, $env, $ctype, $cvar, $py_var, $fail) = @_; $self->ConvertObjectToPythonLevel($mem_ctx, $env, $ctype, $ctype->{LEVELS}[0], $cvar, $py_var, $fail); } sub Parse($$$$$) { my($self,$basename,$ndr,$ndr_hdr,$hdr) = @_; $self->{BASENAME} = $basename; $self->pidl_hdr(" /* Python wrapper functions auto-generated by pidl */ #include #include \"includes.h\" #include \"lib/talloc/pytalloc.h\" #include \"librpc/rpc/pyrpc.h\" #include \"librpc/rpc/pyrpc_util.h\" #include \"$hdr\" #include \"$ndr_hdr\" "); foreach my $x (@$ndr) { ($x->{TYPE} eq "IMPORT") && $self->Import(@{$x->{PATHS}}); ($x->{TYPE} eq "INTERFACE") && $self->Interface($x, $basename); } $self->pidl("static PyMethodDef $basename\_methods[] = {"); $self->indent; foreach (@{$self->{module_methods}}) { my ($fn_name, $pyfn_name, $flags, $doc) = @$_; $self->pidl("{ \"$fn_name\", (PyCFunction)$pyfn_name, $flags, $doc },"); } $self->pidl("{ NULL, NULL, 0, NULL }"); $self->deindent; $self->pidl("};"); $self->pidl(""); $self->pidl("void init$basename(void)"); $self->pidl("{"); $self->indent; $self->pidl("PyObject *m;"); foreach (@{$self->{module_imports}}) { $self->pidl("PyObject *dep_$_;"); } $self->pidl(""); foreach (@{$self->{module_imports}}) { $self->pidl("dep_$_ = PyImport_ImportModule(\"samba.dcerpc.$_\");"); $self->pidl("if (dep_$_ == NULL)"); $self->pidl("\treturn;"); $self->pidl(""); } foreach (keys %{$self->{type_imports}}) { my $basefile = $self->{type_imports}->{$_}; $self->pidl_hdr("static PyTypeObject *$_\_Type;\n"); my $pretty_name = PrettifyTypeName($_, $basefile); $self->pidl("$_\_Type = (PyTypeObject *)PyObject_GetAttrString(dep_$basefile, \"$pretty_name\");"); $self->pidl("if ($_\_Type == NULL)"); $self->pidl("\treturn;"); $self->pidl(""); } $self->pidl($_) foreach (@{$self->{prereadycode}}); foreach (@{$self->{ready_types}}) { $self->pidl("if (PyType_Ready($_) < 0)"); $self->pidl("\treturn;"); } $self->pidl($_) foreach (@{$self->{postreadycode}}); foreach (@{$self->{patch_type_calls}}) { my ($typename, $cvar) = @$_; $self->pidl("#ifdef PY_".uc($typename)."_PATCH"); $self->pidl("PY_".uc($typename)."_PATCH($cvar);"); $self->pidl("#endif"); } $self->pidl(""); $self->pidl("m = Py_InitModule3(\"$basename\", $basename\_methods, \"$basename DCE/RPC\");"); $self->pidl("if (m == NULL)"); $self->pidl("\treturn;"); $self->pidl(""); foreach my $name (keys %{$self->{constants}}) { my $py_obj; my ($ctype, $cvar) = @{$self->{constants}->{$name}}; if ($cvar =~ /^[0-9]+$/ or $cvar =~ /^0x[0-9a-fA-F]+$/) { $py_obj = "PyInt_FromLong($cvar)"; } elsif ($cvar =~ /^".*"$/) { $py_obj = "PyString_FromString($cvar)"; } else { $py_obj = $self->ConvertObjectToPythonData("NULL", expandAlias($ctype), $cvar, undef); } $self->pidl("PyModule_AddObject(m, \"$name\", $py_obj);"); } foreach (@{$self->{module_objects}}) { my ($object_name, $c_name) = @$_; $self->pidl("Py_INCREF($c_name);"); $self->pidl("PyModule_AddObject(m, \"$object_name\", $c_name);"); } $self->pidl("#ifdef PY_MOD_".uc($basename)."_PATCH"); $self->pidl("PY_MOD_".uc($basename)."_PATCH(m);"); $self->pidl("#endif"); $self->pidl(""); $self->deindent; $self->pidl("}"); return ($self->{res_hdr} . $self->{res}); } 1;