r10694: Add some work I did this afternoon on getting pidl to output Samba3

RPC parsers. Currently the following files can be generated:

- include/rpc_BASENAME.h
- rpc_server/srv_BASENAME.c
- rpc_server/srv_BASENAME_nt.c (template only, user has to fill in functions)
- rpc_client/cli_BASENAME.c
- rpc_parse/parse_BASENAME.c

So far, I have been working on getting DFS working. Currently still to do
(all in rpc_parse/parse_BASENAME.c):
 - Proper handling of declarations
 - Proper handling of scalar/buffer parts of structs and unions
 - Subcontexts
 - Proper handling of arrays
 - Support for custom (non-scalar) types

I hope to have a somewhat more working version later this week.

Some files as currently generated are available from:
http://samba.org/~jelmer/pidl_samba3/
(This used to be commit 8af8eaeeef6d46f4d25ccb1d25890e1eef063e4f)

1 files changed, 269 insertions, 0 deletions

diff --git a/source4/pidl/lib/Parse/Pidl/Samba3/Parser.pm b/source4/pidl/lib/Parse/Pidl/Samba3/Parser.pm
new file mode 100644
index 0000000000..8518537ddb
--- /dev/null
+++ b/source4/pidl/lib/Parse/Pidl/Samba3/Parser.pm
@@ -0,0 +1,269 @@
+###################################################
+# Samba3 NDR parser generator for IDL structures
+# Copyright jelmer@samba.org 2005
+# released under the GNU GPL
+
+package Parse::Pidl::Samba3::Parser;
+
+use strict;
+use Parse::Pidl::Typelist qw(hasType getType mapType);
+use Parse::Pidl::Util qw(has_property ParseExpr);
+use Parse::Pidl::NDR qw(GetPrevLevel GetNextLevel ContainsDeferred);
+use Parse::Pidl::Samba3::Util qw(MapSamba3Type);
+
+use vars qw($VERSION);
+$VERSION = '0.01';
+
+my $res = "";
+my $tabs = "";
+sub indent() { $tabs.="\t"; }
+sub deindent() { $tabs = substr($tabs, 1); }
+sub pidl($) { $res .= $tabs.(shift)."\n"; }
+sub fatal($$) { my ($e,$s) = @_; die("$e->{FILE}:$e->{LINE}: $s\n"); }
+
+sub ParseElementLevelData($$$$$)
+{
+	my ($e,$l,$nl,$env,$varname) = @_;
+
+	#FIXME: This only works for scalar types
+	pidl "if (!prs_$l->{DATA_TYPE}(\"$e->{NAME}\", ps, depth, &$varname))";
+	pidl "\treturn False;";
+	pidl "";
+}
+
+sub ParseElementLevelArray($$$$$)
+{
+	my ($e,$l,$nl,$env,$varname) = @_;
+
+	#FIXME
+	pidl "for (i=0; i<".ParseExpr("length_$e->{NAME}", $env) .";i++) {";
+	indent;
+	ParseElementLevel($e,$nl,$env,"$varname\[i]");
+	deindent;
+	pidl "}";
+}
+
+sub ParseElementLevelSwitch($$$$$)
+{
+	my ($e,$l,$nl,$env,$varname) = @_;
+
+	pidl "if (!prs_uint32(\"level\", ps, depth, " . ParseExpr("level_$e->{NAME}", $env) . ", ps, depth))";
+	pidl "\treturn False;";
+	pidl "";
+
+	ParseElementLevel($e,$nl,$env,$varname);
+}
+
+sub ParseElementLevelPtr($$$$$)
+{
+	my ($e,$l,$nl,$env,$varname) = @_;
+
+	# No top-level ref pointers for Samba 3
+	return if ($l->{POINTER_TYPE} eq "ref" and $l->{LEVEL} eq "TOP");
+
+	pidl "if (!prs_uint32(\"ptr_$e->{NAME}\",ps,depth,&" . ParseExpr("ptr_$e->{NAME}", $env) . ", ps, depth))";
+	pidl "\treturn False;";
+	pidl "";
+	
+	pidl "if (" . ParseExpr("ptr_$e->{NAME}", $env) . ") {";
+	indent;
+	ParseElementLevel($e,$nl,$env,$varname);
+	deindent;
+	pidl "}";
+}
+
+sub ParseElementLevelSubcontext($$$$$)
+{
+	my ($e,$l,$nl,$env,$varname) = @_;
+
+	fatal($e, "subcontext() not supported for Samba 3");
+}
+
+sub ParseElementLevel($$$$)
+{
+	my ($e,$l,$env,$varname) = @_;
+
+	{
+		DATA => \&ParseElementLevelData,
+		SUBCONTEXT => \&ParseElementLevelSubcontext,
+		POINTER => \&ParseElementLevelPtr,
+		SWITCH => \&ParseElementLevelSwitch,
+		ARRAY => \&ParseElementLevelArray
+	}->{$l->{TYPE}}->($e,$l,GetNextLevel($e,$l),$env,$varname);
+}
+
+sub ParseElement($$)
+{
+	my ($e,$env) = @_;
+
+	ParseElementLevel($e, $e->{LEVELS}[0], $env, ParseExpr($e->{NAME}, $env));
+}
+
+sub CreateStruct($$$)
+{
+	my ($fn,$s,$es) = @_;
+
+	my $args = "";
+	foreach my $e (@$es) {
+		$args .= ", " . MapSamba3Type($_);
+	}
+
+	pidl "BOOL init_$fn($s *v$args)";
+	pidl "{";
+	indent;
+	pidl "DEBUG(5,(\"init_$fn\\n\"));";
+	# Call init for all arguments
+	foreach my $e (@$es) {
+		foreach my $l (@{$e->{LEVELS}}) {
+			#FIXME
+		}
+	}
+	pidl "return True;";
+	deindent;
+	pidl "}";
+	pidl "";
+	
+	pidl "BOOL $fn(const char *desc, $s *v, prs_struct *ps, int depth)";
+	pidl "{";
+	indent;
+	pidl "if (v == NULL)";
+	pidl "\treturn False;";
+	pidl "";
+	pidl "prs_debug(ps, depth, desc, \"$fn\");";
+	pidl "depth++;";
+	pidl "if (!prs_align(ps))";
+	pidl "\treturn False;";
+	pidl "";
+
+	my $env = {};
+	foreach my $e (@$es) {
+		foreach my $l (@{$e->{LEVELS}}) {
+			if ($l->{TYPE} eq "DATA") {
+				$env->{"$e->{NAME}"} = $e->{"v->$e->{NAME}"};
+			} elsif ($l->{TYPE} eq "POINTER") {
+				$env->{"ptr_$e->{NAME}"} = $e->{"v->ptr_$e->{NAME}"};
+			} elsif ($l->{TYPE} eq "SWITCH") {
+				$env->{"level_$e->{NAME}"} = $e->{"v->level_$e->{NAME}"};
+			} 
+		}
+	}
+
+	ParseElement($_, $env) foreach (@$es);
+
+	pidl "return True;";
+	deindent;
+	pidl "}";
+	pidl "";
+}
+
+sub ParseStruct($$$)
+{
+	my ($if,$s,$n) = @_;
+
+	my $fn = "$if->{NAME}_io_$n";
+	my $sn = uc("$if->{NAME}_$n");
+
+	CreateStruct($fn, $sn, $s->{ELEMENTS});
+}
+
+sub ParseUnion($$$)
+{
+	my ($if,$u,$n) = @_;
+
+	my $fn = "$if->{NAME}_io_$n";
+	my $sn = uc("$if->{NAME}_$n");
+
+	pidl "BOOL $fn(const char *desc, $sn* v, uint32 level, prs_struct *ps, int depth)";
+	pidl "{";
+	indent;
+	pidl "switch (level) {";
+	indent;
+
+	foreach (@{$u->{ELEMENTS}}) {
+		pidl "$_->{CASE}:";
+		indent;
+		pidl "depth++;";
+		ParseElement($_, {});
+		deindent;
+		pidl "depth--;";
+		pidl "break";
+	}
+
+	deindent;
+	pidl "}";
+	pidl "";
+	pidl "return True;";
+	deindent;
+	pidl "}";
+}
+
+sub ParseFunction($$)
+{
+	my ($if,$fn) = @_;
+
+	my @in = ();
+	my @out = ();
+
+	foreach (@{$fn->{ELEMENTS}}) {
+		push (@in, $_) if (grep(/in/, @{$_->{DIRECTION}}));
+		push (@out, $_) if (grep(/out/, @{$_->{DIRECTION}}));
+	}
+
+	if (defined($fn->{RETURN_TYPE})) {
+		push (@out, { 
+			NAME => "status", 
+			TYPE => $fn->{RETURN_TYPE},
+			LEVELS => [
+				{
+					TYPE => "DATA",
+					DATA_TYPE => $fn->{RETURN_TYPE}
+				}
+			]
+		} );
+	}
+
+	CreateStruct("$if->{NAME}_io_q_$fn->{NAME}", uc("$if->{NAME}_q_$fn->{NAME}"), \@in);
+	CreateStruct("$if->{NAME}_io_r_$fn->{NAME}", uc("$if->{NAME}_r_$fn->{NAME}"), \@out);
+}
+
+sub ParseInterface($)
+{
+	my $if = shift;
+
+	# Structures first 
+	pidl "/* $if->{NAME} structures */";
+	foreach (@{$if->{TYPEDEFS}}) {
+		ParseStruct($if, $_->{DATA}, $_->{NAME}) if ($_->{TYPE} eq "STRUCT");
+		ParseUnion($if, $_->{DATA}, $_->{NAME}) if ($_->{TYPE} eq "UNION");
+	}
+
+	pidl "/* $if->{NAME} functions */";
+	ParseFunction($if, $_) foreach (@{$if->{FUNCTIONS}});
+}
+
+sub Parse($$)
+{
+	my($ndr,$filename) = @_;
+
+	$tabs = "";
+	$res = "";
+
+	pidl "/*";
+	pidl " * Unix SMB/CIFS implementation.";
+	pidl " * parser auto-generated by pidl. DO NOT MODIFY!";
+	pidl " */";
+	pidl "";
+	pidl "#include \"includes.h\"";
+	pidl "";
+	pidl "#undef DBGC_CLASS";
+	pidl "#define DBGC_CLASS DBGC_RPC_PARSE";
+	pidl "";
+
+	foreach (@$ndr) {
+		ParseInterface($_) if ($_->{TYPE} eq "INTERFACE");
+	}
+
+	return $res;
+}
+
+1;