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|
###################################################
# Samba3 client generator for IDL structures
# on top of Samba4 style NDR functions
# Copyright jelmer@samba.org 2005-2006
# Copyright gd@samba.org 2008
# released under the GNU GPL
package Parse::Pidl::Samba3::ClientNDR;
use Exporter;
@ISA = qw(Exporter);
@EXPORT_OK = qw(ParseFunction $res $res_hdr ParseOutputArgument);
use strict;
use Parse::Pidl qw(fatal warning error);
use Parse::Pidl::Util qw(has_property ParseExpr);
use Parse::Pidl::Samba4 qw(DeclLong);
use Parse::Pidl::Samba4::Header qw(GenerateFunctionInEnv);
use vars qw($VERSION);
$VERSION = '0.01';
sub indent($) { my ($self) = @_; $self->{tabs}.="\t"; }
sub deindent($) { my ($self) = @_; $self->{tabs} = substr($self->{tabs}, 1); }
sub pidl($$) { my ($self,$txt) = @_; $self->{res} .= $txt ? "$self->{tabs}$txt\n" : "\n"; }
sub pidl_hdr($$) { my ($self, $txt) = @_; $self->{res_hdr} .= "$txt\n"; }
sub fn_declare($$) { my ($self,$n) = @_; $self->pidl($n); $self->pidl_hdr("$n;"); }
sub genpad($)
{
my ($s) = @_;
my $nt = int((length($s)+1)/8);
my $lt = ($nt*8)-1;
my $ns = (length($s)-$lt);
return "\t"x($nt)." "x($ns);
}
sub new($)
{
my ($class) = shift;
my $self = { res => "", res_hdr => "", tabs => "" };
bless($self, $class);
}
sub ElementDirection($)
{
my ($e) = @_;
return "[in,out]" if (has_property($e, "in") and has_property($e, "out"));
return "[in]" if (has_property($e, "in"));
return "[out]" if (has_property($e, "out"));
return "[in,out]";
}
sub HeaderProperties($$)
{
my($props,$ignores) = @_;
my $ret = "";
foreach my $d (keys %{$props}) {
next if (grep(/^$d$/, @$ignores));
if($props->{$d} ne "1") {
$ret.= "$d($props->{$d}),";
} else {
$ret.="$d,";
}
}
if ($ret) {
return "[" . substr($ret, 0, -1) . "]";
}
}
sub ParseOutputArgument($$$)
{
my ($self, $fn, $e) = @_;
my $level = 0;
if ($e->{LEVELS}[0]->{TYPE} ne "POINTER" and $e->{LEVELS}[0]->{TYPE} ne "ARRAY") {
$self->pidl("return NT_STATUS_NOT_SUPPORTED;");
error($e->{ORIGINAL}, "[out] argument is not a pointer or array");
return;
}
if ($e->{LEVELS}[0]->{TYPE} eq "POINTER") {
$level = 1;
if ($e->{LEVELS}[0]->{POINTER_TYPE} ne "ref") {
$self->pidl("if ($e->{NAME} && r.out.$e->{NAME}) {");
$self->indent;
}
}
if ($e->{LEVELS}[$level]->{TYPE} eq "ARRAY") {
# This is a call to GenerateFunctionInEnv intentionally.
# Since the data is being copied into a user-provided data
# structure, the user should be able to know the size beforehand
# to allocate a structure of the right size.
my $env = GenerateFunctionInEnv($fn, "r.");
my $l = $e->{LEVELS}[$level];
unless (defined($l->{SIZE_IS})) {
error($e->{ORIGINAL}, "no size known for [out] array `$e->{NAME}'");
$self->pidl('#error No size known for [out] array `$e->{NAME}');
} else {
my $size_is = ParseExpr($l->{SIZE_IS}, $env, $e->{ORIGINAL});
if (has_property($e, "charset")) {
$self->pidl("memcpy(CONST_DISCARD(char *, $e->{NAME}), r.out.$e->{NAME}, $size_is * sizeof(*$e->{NAME}));");
} else {
$self->pidl("memcpy($e->{NAME}, r.out.$e->{NAME}, $size_is * sizeof(*$e->{NAME}));");
}
}
} else {
$self->pidl("*$e->{NAME} = *r.out.$e->{NAME};");
}
if ($e->{LEVELS}[0]->{TYPE} eq "POINTER") {
if ($e->{LEVELS}[0]->{POINTER_TYPE} ne "ref") {
$self->deindent;
$self->pidl("}");
}
}
}
sub ParseFunction($$$)
{
my ($self, $if, $fn) = @_;
my $fn_args = "";
my $uif = uc($if);
my $ufn = "NDR_".uc($fn->{NAME});
my $fn_str = "NTSTATUS rpccli_$fn->{NAME}";
my $pad = genpad($fn_str);
$fn_args .= "struct rpc_pipe_client *cli,\n" . $pad . "TALLOC_CTX *mem_ctx";
foreach (@{$fn->{ELEMENTS}}) {
my $dir = ElementDirection($_);
my $prop = HeaderProperties($_->{PROPERTIES}, ["in", "out"]);
$fn_args .= ",\n" . $pad . DeclLong($_) . " /* $dir $prop */";
}
if (defined($fn->{RETURN_TYPE}) && ($fn->{RETURN_TYPE} eq "WERROR")) {
$fn_args .= ",\n" . $pad . "WERROR *werror";
}
$self->fn_declare("$fn_str($fn_args)");
$self->pidl("{");
$self->indent;
$self->pidl("struct $fn->{NAME} r;");
$self->pidl("NTSTATUS status;");
$self->pidl("");
$self->pidl("/* In parameters */");
foreach (@{$fn->{ELEMENTS}}) {
if (grep(/in/, @{$_->{DIRECTION}})) {
$self->pidl("r.in.$_->{NAME} = $_->{NAME};");
}
}
$self->pidl("");
$self->pidl("if (DEBUGLEVEL >= 10) {");
$self->indent;
$self->pidl("NDR_PRINT_IN_DEBUG($fn->{NAME}, &r);");
$self->deindent;
$self->pidl("}");
$self->pidl("");
$self->pidl("status = cli->dispatch(cli,");
$self->pidl("\t\t\tmem_ctx,");
$self->pidl("\t\t\t&ndr_table_$if,");
$self->pidl("\t\t\t$ufn,");
$self->pidl("\t\t\t&r);");
$self->pidl("");
$self->pidl("if (!NT_STATUS_IS_OK(status)) {");
$self->indent;
$self->pidl("return status;");
$self->deindent;
$self->pidl("}");
$self->pidl("");
$self->pidl("if (DEBUGLEVEL >= 10) {");
$self->indent;
$self->pidl("NDR_PRINT_OUT_DEBUG($fn->{NAME}, &r);");
$self->deindent;
$self->pidl("}");
$self->pidl("");
$self->pidl("if (NT_STATUS_IS_ERR(status)) {");
$self->indent;
$self->pidl("return status;");
$self->deindent;
$self->pidl("}");
$self->pidl("");
$self->pidl("/* Return variables */");
foreach my $e (@{$fn->{ELEMENTS}}) {
next unless (grep(/out/, @{$e->{DIRECTION}}));
$self->ParseOutputArgument($fn, $e);
}
$self->pidl("");
$self->pidl("/* Return result */");
if (not $fn->{RETURN_TYPE}) {
$self->pidl("return NT_STATUS_OK;");
} elsif ($fn->{RETURN_TYPE} eq "NTSTATUS") {
$self->pidl("return r.out.result;");
} elsif ($fn->{RETURN_TYPE} eq "WERROR") {
$self->pidl("if (werror) {");
$self->indent;
$self->pidl("*werror = r.out.result;");
$self->deindent;
$self->pidl("}");
$self->pidl("");
$self->pidl("return werror_to_ntstatus(r.out.result);");
} else {
warning($fn->{ORIGINAL}, "Unable to convert $fn->{RETURN_TYPE} to NTSTATUS");
$self->pidl("return NT_STATUS_OK;");
}
$self->deindent;
$self->pidl("}");
$self->pidl("");
}
sub ParseInterface($$)
{
my ($self, $if) = @_;
my $uif = uc($if->{NAME});
$self->pidl_hdr("#ifndef __CLI_$uif\__");
$self->pidl_hdr("#define __CLI_$uif\__");
foreach (@{$if->{FUNCTIONS}}) {
next if ($_->{PROPERTIES}{noopnum});
$self->ParseFunction($if->{NAME}, $_);
}
$self->pidl_hdr("#endif /* __CLI_$uif\__ */");
}
sub Parse($$$$)
{
my($self,$ndr,$header,$ndr_header) = @_;
$self->pidl("/*");
$self->pidl(" * Unix SMB/CIFS implementation.");
$self->pidl(" * client auto-generated by pidl. DO NOT MODIFY!");
$self->pidl(" */");
$self->pidl("");
$self->pidl("#include \"includes.h\"");
$self->pidl("#include \"$header\"");
$self->pidl_hdr("#include \"$ndr_header\"");
$self->pidl("");
foreach (@$ndr) {
$self->ParseInterface($_) if ($_->{TYPE} eq "INTERFACE");
}
return ($self->{res}, $self->{res_hdr});
}
1;
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