param: Autogenerate s3 lp_ctx glue table

This allows us to use more lpcfg_ functions without adding them
manually.

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>

1 files changed, 139 insertions, 0 deletions

diff --git a/script/mks3param_ctx_table.pl b/script/mks3param_ctx_table.pl
new file mode 100644
index 0000000000..cfd6e029da
--- /dev/null
+++ b/script/mks3param_ctx_table.pl
@@ -0,0 +1,139 @@
+#!/usr/bin/perl
+# Generate loadparm interfaces tables for Samba3/Samba4 integration
+# by Andrew Bartlett
+# based on mkproto.pl Written by Jelmer Vernooij
+# based on the original mkproto.sh by Andrew Tridgell
+
+use strict;
+
+# don't use warnings module as it is not portable enough
+# use warnings;
+
+use Getopt::Long;
+use File::Basename;
+use File::Path;
+
+#####################################################################
+# read a file into a string
+
+my $file = undef;
+my $public_define = undef;
+my $_public = "";
+my $_private = "";
+my $public_data = \$_public;
+my $builddir = ".";
+my $srcdir = ".";
+
+sub public($)
+{
+	my ($d) = @_;
+	$$public_data .= $d;
+}
+
+sub usage()
+{
+	print "Usage: mks3param.pl [options] [c files]\n";
+	print "OPTIONS:\n";
+	print "  --srcdir=path          Read files relative to this directory\n";
+	print "  --builddir=path        Write file relative to this directory\n";
+	print "  --help                 Print this help message\n\n";
+	exit 0;
+}
+
+GetOptions(
+	'file=s' => sub { my ($f,$v) = @_; $file = $v; },
+	'srcdir=s' => sub { my ($f,$v) = @_; $srcdir = $v; },
+	'builddir=s' => sub { my ($f,$v) = @_; $builddir = $v; },
+	'help' => \&usage
+) or exit(1);
+
+sub file_load($)
+{
+    my($filename) = @_;
+    local(*INPUTFILE);
+    open(INPUTFILE, $filename) or return undef;
+    my($saved_delim) = $/;
+    undef $/;
+    my($data) = <INPUTFILE>;
+    close(INPUTFILE);
+    $/ = $saved_delim;
+    return $data;
+}
+
+sub print_header($)
+{
+	my ($file) = @_;
+	$file->("/* This file was automatically generated by mks3param_ctx.pl. DO NOT EDIT */\n\n");
+	$file->("static const struct loadparm_s3_helpers s3_fns = \n");
+	$file->("{\n");
+	$file->("\t.get_parametric = lp_parm_const_string_service,\n");
+	$file->("\t.get_parm_struct = lp_get_parameter,\n");
+	$file->("\t.get_parm_ptr = lp_parm_ptr,\n");
+	$file->("\t.get_service = lp_service_for_s4_ctx,\n");
+	$file->("\t.get_servicebynum = lp_servicebynum_for_s4_ctx,\n");
+	$file->("\t.get_default_loadparm_service = lp_default_loadparm_service,\n");
+	$file->("\t.get_numservices = lp_numservices,\n");
+	$file->("\t.load = lp_load_for_s4_ctx,\n");
+	$file->("\t.set_cmdline = lp_set_cmdline,\n");
+	$file->("\t.dump = lp_dump,\n");
+}
+
+sub print_footer($)
+{
+	my ($file) = @_;
+	$file->("};");
+}
+
+sub handle_loadparm($$)
+{
+	my ($file,$line) = @_;
+
+	# STRING isn't handled here, as we still don't know what to do with the substituted vars */
+	# LOCAL also isn't handled here
+	if ($line =~ /^FN_(GLOBAL)_(CONST_STRING|BOOL|bool|CHAR|INTEGER|LIST)\((\w+),.*\)/o) {
+		my $scope = $1;
+		my $type = $2;
+		my $name = $3;
+
+		$file->(".$name = lp_$name,\n");
+	}
+}
+
+sub process_file($$)
+{
+	my ($file, $filename) = @_;
+
+	$filename =~ s/\.o$/\.c/g;
+
+	if ($filename =~ /^\//) {
+		open(FH, "<$filename") or die("Failed to open $filename");
+	} elsif (!open(FH, "< $builddir/$filename")) {
+	    open(FH, "< $srcdir/$filename") || die "Failed to open $filename";
+	}
+
+	my $comment = undef;
+	my $incomment = 0;
+	while (my $line = <FH>) {
+		if ($line =~ /^FN_/) {
+			handle_loadparm($file, $line);
+		}
+		next;
+	}
+
+	close(FH);
+}
+
+
+print_header(\&public);
+
+process_file(\&public, $_) foreach (@ARGV);
+print_footer(\&public);
+
+if (not defined($file)) {
+	print STDOUT $$public_data;
+}
+
+mkpath(dirname($file), 0, 0755);
+open(PUBLIC, ">$file") or die("Can't open `$file': $!");
+print PUBLIC "$$public_data";
+close(PUBLIC);