################################################### # 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::Typelist qw(hasType resolveType getType mapTypeName expandAlias); use Parse::Pidl::Util qw(has_property ParseExpr); 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::Header qw(GenerateFunctionInEnv GenerateFunctionOutEnv EnvSubstituteValue GenerateStructEnv); use vars qw($VERSION); $VERSION = '0.01'; sub new($) { my ($class) = @_; my $self = { res => "", res_hdr => "", tabs => "", constants => {}, module_methods => [], module_objects => [], module_types => []}; bless($self, $class); } sub pidl_hdr ($$) { my $self = shift; $self->{res_hdr} .= shift; } sub pidl($$) { my ($self, $d) = @_; if ($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 Import { my $self = shift; my @imports = @_; foreach (@imports) { s/\.idl\"$//; s/^\"//; $self->pidl_hdr("#include \"librpc/gen_ndr/py_$_\.h\"\n"); } } 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($$$$) { my ($self, $mem_ctx, $type, $switch, $name) = @_; $self->pidl("PyObject *ret;"); $self->pidl(""); $self->pidl("switch ($switch) {"); $self->indent; foreach my $e (@{$type->{ELEMENTS}}) { $self->pidl("$e->{CASE}:"); $self->indent; if ($e->{NAME}) { $self->ConvertObjectToPython($mem_ctx, {}, $e, "$name->$e->{NAME}", "ret"); } else { $self->pidl("ret = Py_None;"); } $self->pidl("return ret;"); $self->pidl(""); $self->deindent; } $self->deindent; $self->pidl("}"); $self->pidl("PyErr_SetString(PyExc_TypeError, \"unknown union level\");"); $self->pidl("return NULL;"); } sub FromPythonToUnionFunction($$$$$) { my ($self, $type, $typename, $switch, $mem_ctx, $name) = @_; my $has_default = 0; $self->pidl("$typename *ret = talloc_zero($mem_ctx, $typename);"); $self->pidl("switch ($switch) {"); $self->indent; foreach my $e (@{$type->{ELEMENTS}}) { $self->pidl("$e->{CASE}:"); if ($e->{CASE} eq "default") { $has_default = 1; } $self->indent; if ($e->{NAME}) { $self->ConvertObjectFromPython({}, $mem_ctx, $e, $name, "ret->$e->{NAME}", "talloc_free(ret); return NULL;"); } $self->pidl("break;"); $self->deindent; $self->pidl(""); } if (!$has_default) { $self->pidl("default:"); $self->indent; $self->pidl("PyErr_SetString(PyExc_TypeError, \"invalid union level value\");"); $self->pidl("talloc_free(ret);"); $self->pidl("ret = NULL;"); $self->deindent; } $self->deindent; $self->pidl("}"); $self->pidl(""); $self->pidl("return ret;"); } sub PythonStruct($$$$$$) { 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 = 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}"); $self->pidl("return py_$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 = 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}))) { $self->pidl("talloc_free($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 *self, PyObject *args, PyObject *kwargs)"); $self->pidl("{"); $self->indent; $self->pidl("$cname *ret = talloc_zero(NULL, $cname);"); $self->pidl("return py_talloc_import(&$name\_Type, ret);"); $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 = py_talloc_get_ptr(py_obj);"); $self->pidl("DATA_BLOB blob;"); $self->pidl("enum ndr_err_code err;"); $self->pidl("err = ndr_push_struct_blob(&blob, py_talloc_get_mem_ctx(py_obj), NULL, object, (ndr_push_flags_fn_t)ndr_push_$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 = 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(""); $self->pidl("err = ndr_pull_struct_blob_all(&blob, py_talloc_get_mem_ctx(py_obj), NULL, object, (ndr_pull_flags_fn_t)ndr_pull_$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("return Py_None;"); $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.pack() -> blob\\nNDR pack\" },"); $self->pidl("{ \"__ndr_unpack__\", (PyCFunction)py_$name\_ndr_unpack, METH_VARARGS, \"S.unpack(blob) -> None\\nNDR unpack\" },"); $self->pidl("{ NULL, NULL, 0, NULL }"); $self->deindent; $self->pidl("};"); $self->pidl(""); } $self->pidl_hdr("PyAPI_DATA(PyTypeObject) $name\_Type;\n"); $self->pidl_hdr("#define $name\_Check(op) PyObject_TypeCheck(op, &$name\_Type)\n"); $self->pidl_hdr("#define $name\_CheckExact(op) ((op)->ob_type == &$name\_Type)\n"); $self->pidl_hdr("\n"); my $docstring = ($self->DocString($d, $name) or "NULL"); my $typeobject = "$name\_Type"; $self->pidl("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,"); $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 PythonFunctionBody($$$$$) { my ($self, $fn, $iface, $prettyname, $infn, $outfn) = @_; $self->pidl("dcerpc_InterfaceObject *iface = (dcerpc_InterfaceObject *)self;"); $self->pidl("NTSTATUS status;"); $self->pidl("TALLOC_CTX *mem_ctx = talloc_new(NULL);"); $self->pidl("struct $fn->{NAME} *r = talloc_zero(mem_ctx, struct $fn->{NAME});"); $self->pidl("PyObject *result = Py_None;"); $self->pidl("if (!$infn(args, kwargs, r)) {"); $self->indent; $self->pidl("talloc_free(mem_ctx);"); $self->pidl("return NULL;"); $self->deindent; $self->pidl("}"); $self->pidl(""); $self->pidl("status = dcerpc_$fn->{NAME}(iface->pipe, mem_ctx, r);"); $self->pidl("if (NT_STATUS_IS_ERR(status)) {"); $self->indent; $self->pidl("PyErr_SetDCERPCStatus(iface->pipe, status);"); $self->pidl("talloc_free(mem_ctx);"); $self->pidl("return NULL;"); $self->deindent; $self->pidl("}"); $self->pidl(""); $self->pidl("result = $outfn(r);"); $self->pidl(""); $self->pidl("talloc_free(mem_ctx);"); $self->pidl("return result;"); } sub PythonFunctionUnpackOut($$$) { 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 = Py_None;"); 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) { $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}", $py_name); if ($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", $fn->{RETURN_TYPE}, "r->out.result"); if ($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; $self->pidl("}"); return ($outfnname, $signature); } sub PythonFunctionPackIn($$$) { my ($self, $fn, $fnname) = @_; my $metadata_args = find_metadata_args($fn); my $infnname = "pack_$fnname\_args_in"; $self->pidl("static bool $infnname(PyObject *args, PyObject *kwargs, struct $fn->{NAME} *r)"); $self->pidl("{"); $self->indent; my $args_format = ""; my $args_string = ""; my $args_names = ""; my $signature = ""; foreach my $e (@{$fn->{ELEMENTS}}) { next unless (grep(/in/,@{$e->{DIRECTION}})); next if (($metadata_args->{in}->{$e->{NAME}} and grep(/in/, @{$e->{DIRECTION}})) or ($metadata_args->{out}->{$e->{NAME}}) and grep(/out/, @{$e->{DIRECTION}})); $self->pidl("PyObject *py_$e->{NAME};"); $args_format .= "O"; $args_string .= ", &py_$e->{NAME}"; $args_names .= "\"$e->{NAME}\", "; $signature .= "$e->{NAME}, "; } if (substr($signature, -2) eq ", ") { $signature = substr($signature, 0, -2); } $self->pidl("const char *kwnames[] = {"); $self->indent; $self->pidl($args_names . "NULL"); $self->deindent; $self->pidl("};"); $self->pidl(""); $self->pidl("if (!PyArg_ParseTupleAndKeywords(args, kwargs, \"$args_format:$fn->{NAME}\", discard_const_p(char *, kwnames)$args_string)) {"); $self->indent; $self->pidl("return false;"); $self->deindent; $self->pidl("}"); $self->pidl(""); my $env = GenerateFunctionInEnv($fn, "r->"); my $fail = "return false;"; foreach my $e (@{$fn->{ELEMENTS}}) { next unless (grep(/in/,@{$e->{DIRECTION}})); if ($metadata_args->{in}->{$e->{NAME}}) { my $py_var = "py_".$metadata_args->{in}->{$e->{NAME}}; $self->pidl("PY_CHECK_TYPE(PyList, $py_var, $fail);"); my $val = "PyList_Size($py_var)"; if ($e->{LEVELS}[0]->{TYPE} eq "POINTER") { $self->pidl("r->in.$e->{NAME} = talloc_ptrtype(r, r->in.$e->{NAME});"); $self->pidl("*r->in.$e->{NAME} = $val;"); } else { $self->pidl("r->in.$e->{NAME} = $val;"); } } else { $self->ConvertObjectFromPython($env, "r", $e, "py_$e->{NAME}", "r->in.$e->{NAME}", $fail); } } $self->pidl("return true;"); $self->deindent; $self->pidl("}"); $self->pidl(""); return ($infnname, $signature); } sub PythonFunction($$$) { my ($self, $fn, $iface, $prettyname) = @_; my $fnname = "py_$fn->{NAME}"; my $docstring = $self->DocString($fn, $fn->{NAME}); my ($insignature, $outsignature); my ($infn, $outfn); if (not has_property($fn, "todo")) { ($infn, $insignature) = $self->PythonFunctionPackIn($fn, $fnname); ($outfn, $outsignature) = $self->PythonFunctionUnpackOut($fn, $fnname); } $self->pidl("static PyObject *$fnname(PyObject *self, PyObject *args, PyObject *kwargs)"); $self->pidl("{"); $self->indent; if (has_property($fn, "todo")) { $self->pidl("PyErr_SetString(PyExc_NotImplementedError, \"No marshalling code available yet for $prettyname\");"); $self->pidl("return NULL;"); unless ($docstring) { $docstring = "NULL"; } } else { $self->PythonFunctionBody($fn, $iface, $prettyname, $infn, $outfn); my $signature = "S.$prettyname($insignature) -> $outsignature"; if ($docstring) { $docstring = "\"$signature\\n\\n\"$docstring"; } else { $docstring = "\"$signature\""; } } $self->deindent; $self->pidl("}"); $self->pidl(""); return ($fnname, $docstring); } sub handle_werror($$$$) { my ($self, $var, $retval, $mem_ctx) = @_; $self->pidl("if (!W_ERROR_IS_OK($var)) {"); $self->indent; $self->pidl("PyErr_SetWERROR($var);"); $self->pidl("talloc_free($mem_ctx);") if ($mem_ctx); $self->pidl("return $retval;"); $self->deindent; $self->pidl("}"); $self->pidl(""); } sub handle_ntstatus($$$$) { my ($self, $var, $retval, $mem_ctx) = @_; $self->pidl("if (NT_STATUS_IS_ERR($var)) {"); $self->indent; $self->pidl("PyErr_SetNTSTATUS($var);"); $self->pidl("talloc_free($mem_ctx);") if ($mem_ctx); $self->pidl("return $retval;"); $self->deindent; $self->pidl("}"); $self->pidl(""); } sub PythonType($$$$) { my ($self, $modulename, $d, $interface, $basename) = @_; my $actual_ctype = $d; if ($actual_ctype->{TYPE} eq "TYPEDEF") { $actual_ctype = $actual_ctype->{DATA}; } if ($actual_ctype->{TYPE} eq "STRUCT") { my $typeobject; my $fn_name = $d->{NAME}; $fn_name =~ s/^$interface->{NAME}_//; $fn_name =~ s/^$basename\_//; if ($d->{TYPE} eq "STRUCT") { $typeobject = $self->PythonStruct($modulename, $fn_name, $d->{NAME}, mapTypeName($d), $d); } else { $typeobject = $self->PythonStruct($modulename, $fn_name, $d->{NAME}, mapTypeName($d), $d->{DATA}); } $self->register_module_typeobject($fn_name, $typeobject); } if ($d->{TYPE} eq "ENUM" or $d->{TYPE} eq "BITMAP") { $self->EnumAndBitmapConsts($d->{NAME}, $d); } if ($d->{TYPE} eq "TYPEDEF" and ($d->{DATA}->{TYPE} eq "ENUM" or $d->{DATA}->{TYPE} eq "BITMAP")) { $self->EnumAndBitmapConsts($d->{NAME}, $d->{DATA}); } if ($actual_ctype->{TYPE} eq "UNION" and defined($actual_ctype->{ELEMENTS})) { $self->pidl("PyObject *py_import_$d->{NAME}(TALLOC_CTX *mem_ctx, int level, " .mapTypeName($d) . " *in)"); $self->pidl("{"); $self->indent; $self->FromUnionToPythonFunction("mem_ctx", $actual_ctype, "level", "in") if ($actual_ctype->{TYPE} eq "UNION"); $self->deindent; $self->pidl("}"); $self->pidl(""); $self->pidl(mapTypeName($d) . " *py_export_$d->{NAME}(TALLOC_CTX *mem_ctx, int level, PyObject *in)"); $self->pidl("{"); $self->indent; $self->FromPythonToUnionFunction($actual_ctype, mapTypeName($d), "level", "mem_ctx", "in") if ($actual_ctype->{TYPE} eq "UNION"); $self->deindent; $self->pidl("}"); $self->pidl(""); } } sub DocString($$$) { 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) = @_; $self->pidl_hdr("#ifndef _HEADER_PYTHON_$interface->{NAME}\n"); $self->pidl_hdr("#define _HEADER_PYTHON_$interface->{NAME}\n\n"); $self->pidl_hdr("\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("PyAPI_DATA(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"); my $prettyname = $d->{NAME}; $prettyname =~ s/^$interface->{NAME}_//; $prettyname =~ s/^$basename\_//; my ($fnname, $fndocstring) = $self->PythonFunction($d, $interface->{NAME}, $prettyname); push (@fns, [$fnname, $prettyname, $fndocstring]); } $self->pidl("static PyMethodDef interface_$interface->{NAME}\_methods[] = {"); $self->indent; foreach my $d (@fns) { my ($c_fn, $prettyname, $docstring) = @$d; $self->pidl("{ \"$prettyname\", (PyCFunction)$c_fn, METH_VARARGS|METH_KEYWORDS, $docstring },"); } $self->pidl("{ NULL, NULL, 0, NULL }"); $self->deindent; $self->pidl("};"); $self->pidl(""); $self->pidl("static PyObject *interface_$interface->{NAME}_new(PyTypeObject *self, PyObject *args, PyObject *kwargs)"); $self->pidl("{"); $self->indent; $self->pidl("dcerpc_InterfaceObject *ret;"); $self->pidl("const char *binding_string;"); $self->pidl("struct cli_credentials *credentials;"); $self->pidl("struct loadparm_context *lp_ctx = NULL;"); $self->pidl("PyObject *py_lp_ctx = Py_None, *py_credentials = Py_None, *py_basis = Py_None;"); $self->pidl("TALLOC_CTX *mem_ctx = NULL;"); $self->pidl("struct event_context *event_ctx;"); $self->pidl("NTSTATUS status;"); $self->pidl(""); $self->pidl("const char *kwnames[] = {"); $self->indent; $self->pidl("\"binding\", \"lp_ctx\", \"credentials\", \"basis_connection\", NULL"); $self->deindent; $self->pidl("};"); $self->pidl("extern struct loadparm_context *lp_from_py_object(PyObject *py_obj);"); $self->pidl("extern struct cli_credentials *cli_credentials_from_py_object(PyObject *py_obj);"); $self->pidl(""); $self->pidl("if (!PyArg_ParseTupleAndKeywords(args, kwargs, \"s|OOO:$interface->{NAME}\", discard_const_p(char *, kwnames), &binding_string, &py_lp_ctx, &py_credentials, &py_basis)) {"); $self->indent; $self->pidl("return NULL;"); $self->deindent; $self->pidl("}"); $self->pidl(""); $self->pidl("lp_ctx = lp_from_py_object(py_lp_ctx);"); $self->pidl("if (lp_ctx == NULL) {"); $self->indent; $self->pidl("PyErr_SetString(PyExc_TypeError, \"Expected loadparm context\");"); $self->pidl("return NULL;"); $self->deindent; $self->pidl("}"); $self->pidl(""); $self->pidl("credentials = cli_credentials_from_py_object(py_credentials);"); $self->pidl("if (credentials == NULL) {"); $self->indent; $self->pidl("PyErr_SetString(PyExc_TypeError, \"Expected credentials\");"); $self->pidl("return NULL;"); $self->deindent; $self->pidl("}"); $self->pidl("ret = PyObject_New(dcerpc_InterfaceObject, &$interface->{NAME}_InterfaceType);"); $self->pidl(""); $self->pidl("event_ctx = event_context_init(mem_ctx);"); $self->pidl(""); $self->pidl("if (py_basis != Py_None) {"); $self->indent; $self->pidl("struct dcerpc_pipe *base_pipe;"); $self->pidl(""); $self->pidl("if (!PyObject_TypeCheck(py_basis, &dcerpc_InterfaceType)) {"); $self->indent; $self->pidl("PyErr_SetString(PyExc_ValueError, \"basis_connection must be a DCE/RPC connection\");"); $self->pidl("talloc_free(mem_ctx);"); $self->pidl("return NULL;"); $self->deindent; $self->pidl("}"); $self->pidl(""); $self->pidl("base_pipe = ((dcerpc_InterfaceObject *)py_basis)->pipe;"); $self->pidl(""); $self->pidl("status = dcerpc_secondary_context(base_pipe, &ret->pipe, &ndr_table_$interface->{NAME});"); $self->deindent; $self->pidl("} else {"); $self->indent; $self->pidl("status = dcerpc_pipe_connect(NULL, &ret->pipe, binding_string, "); $self->pidl(" &ndr_table_$interface->{NAME}, credentials, event_ctx, lp_ctx);"); $self->deindent; $self->pidl("}"); $self->handle_ntstatus("status", "NULL", "mem_ctx"); $self->pidl("ret->pipe->conn->flags |= DCERPC_NDR_REF_ALLOC;"); $self->pidl("return (PyObject *)ret;"); $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; } $self->pidl("PyTypeObject $interface->{NAME}_InterfaceType = {"); $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_base = &dcerpc_InterfaceType,"); $self->pidl(".tp_methods = interface_$interface->{NAME}_methods,"); $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}, "&$interface->{NAME}_InterfaceType"); } $self->pidl_hdr("\n"); $self->pidl_hdr("#endif /* _HEADER_NDR_$interface->{NAME} */\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 *)$py_name"); push (@{$self->{module_types}}, [$name, $py_name]) } sub register_module_object($$$) { my ($self, $name, $py_name) = @_; push (@{$self->{module_objects}}, [$name, $py_name]) } sub assign($$$) { my ($self, $dest, $src) = @_; if ($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) = @_; die("undef type for $cvar") unless(defined($ctype)); $ctype = resolveType($ctype); my $actual_ctype = $ctype; if ($ctype->{TYPE} eq "TYPEDEF") { $actual_ctype = $ctype->{DATA}; } if ($actual_ctype->{TYPE} eq "ENUM" or $actual_ctype->{TYPE} eq "BITMAP" or $actual_ctype->{TYPE} eq "SCALAR" and ( expandAlias($actual_ctype->{NAME}) =~ /^(u?int[0-9]*|hyper|NTTIME|time_t|NTTIME_hyper|NTTIME_1sec|dlong|udlong|udlongr)$/)) { $self->pidl("PY_CHECK_TYPE(PyInt, $cvar, $fail);"); $self->pidl("$target = PyInt_AsLong($cvar);"); return; } if ($actual_ctype->{TYPE} eq "STRUCT") { $self->pidl("PY_CHECK_TYPE($ctype->{NAME}, $cvar, $fail);"); $self->assign($target, "py_talloc_get_ptr($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 "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; } die("unknown type ".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; } $self->pidl("$var_name = talloc_ptrtype($mem_ctx, $var_name);"); $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, $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, $py_var, $fail);"); $self->pidl("{"); $self->indent; $self->pidl("int $counter;"); if (!$l->{IS_FIXED}) { $self->pidl("$var_name = talloc_array_ptrtype($mem_ctx, $var_name, PyList_Size($py_var));"); } $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); } elsif ($l->{TYPE} eq "SWITCH") { $var_name = get_pointer_to($var_name); my $switch = ParseExpr($l->{SWITCH_IS}, $env, $e); $self->assign($var_name, "py_export_" . GetNextLevel($e, $l)->{DATA_TYPE} . "($mem_ctx, $switch, $py_var)"); } elsif ($l->{TYPE} eq "SUBCONTEXT") { $self->ConvertObjectFromPythonLevel($env, $mem_ctx, $py_var, $e, GetNextLevel($e, $l), $var_name, $fail); } else { die("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 ($ctypename =~ /^(char|u?int[0-9]*|hyper|dlong|udlong|udlongr|time_t|NTTIME_hyper|NTTIME|NTTIME_1sec)$/) { 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 $ctypename eq "wrepl_nbt_name")) { return "PyString_FromString($cvar)"; } # Not yet supported if ($ctypename eq "string_array") { return "PyCObject_FromVoidPtr($cvar)"; } if ($ctypename eq "ipv4address") { return "PyString_FromString($cvar)"; } if ($ctypename eq "pointer") { return "PyCObject_FromVoidPtr($cvar, talloc_free)"; } die("Unknown scalar type $ctypename"); } sub ConvertObjectToPythonData($$$$$) { my ($self, $mem_ctx, $ctype, $cvar) = @_; die("undef type for $cvar") unless(defined($ctype)); $ctype = resolveType($ctype); my $actual_ctype = $ctype; if ($ctype->{TYPE} eq "TYPEDEF") { $actual_ctype = $ctype->{DATA}; } if ($actual_ctype->{TYPE} eq "ENUM") { return $self->ConvertScalarToPython(Parse::Pidl::Typelist::enum_type_fn($actual_ctype), $cvar); } elsif ($actual_ctype->{TYPE} eq "BITMAP") { return $self->ConvertScalarToPython(Parse::Pidl::Typelist::bitmap_type_fn($actual_ctype), $cvar); } elsif ($actual_ctype->{TYPE} eq "SCALAR") { return $self->ConvertScalarToPython($actual_ctype->{NAME}, $cvar); } elsif ($actual_ctype->{TYPE} eq "STRUCT") { return "py_talloc_import_ex(&$ctype->{NAME}_Type, $mem_ctx, $cvar)"; } die("unknown type ".mapTypeName($ctype) . ": $cvar"); } sub ConvertObjectToPythonLevel($$$$$) { my ($self, $mem_ctx, $env, $e, $l, $var_name, $py_var) = @_; 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); return; } if ($l->{POINTER_TYPE} ne "ref") { $self->pidl("if ($var_name == NULL) {"); $self->indent; $self->pidl("$py_var = Py_None;"); $self->deindent; $self->pidl("} else {"); $self->indent; } $self->ConvertObjectToPythonLevel($var_name, $env, $e, $nl, get_value_of($var_name), $py_var); 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("$py_var = PyUnicode_Decode($var_name, strlen($var_name), \"utf-8\", \"ignore\");"); } 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->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); $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);"); } 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); $self->pidl("$py_var = $conv;"); } elsif ($l->{TYPE} eq "SUBCONTEXT") { $self->ConvertObjectToPythonLevel($mem_ctx, $env, $e, GetNextLevel($e, $l), $var_name, $py_var); } else { die("Unknown level type $l->{TYPE} $var_name"); } } sub ConvertObjectToPython($$$$$$) { my ($self, $mem_ctx, $env, $ctype, $cvar, $py_var) = @_; $self->ConvertObjectToPythonLevel($mem_ctx, $env, $ctype, $ctype->{LEVELS}[0], $cvar, $py_var); } sub Parse($$$$$) { my($self,$basename,$ndr,$ndr_hdr,$hdr) = @_; my $py_hdr = $hdr; $py_hdr =~ s/ndr_([^\/]+)$/py_$1/g; $self->pidl_hdr("/* header auto-generated by pidl */\n\n"); $self->pidl(" /* Python wrapper functions auto-generated by pidl */ #include \"includes.h\" #include #include \"librpc/rpc/dcerpc.h\" #include \"scripting/python/pytalloc.h\" #include \"librpc/rpc/pyrpc.h\" #include \"lib/events/events.h\" #include \"$hdr\" #include \"$ndr_hdr\" #include \"$py_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;"); $self->pidl(""); foreach (@{$self->{module_types}}) { my ($object_name, $c_name) = @$_; $self->pidl("if (PyType_Ready($c_name) < 0)"); $self->pidl("\treturn;"); } $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); } $self->pidl("PyModule_AddObject(m, \"$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->deindent; $self->pidl("}"); return ($self->{res_hdr}, $self->{res}); } 1;