s4-param Add hook between Samba3 and Samba4 loadparm systems.

In the top level build, this allows calls to code that requires a
lpcfg_ style loadparm_context, while using the global parameters
loaded from the source3 loadparm code.

Andrew Bartlett

1 files changed, 175 insertions, 0 deletions

diff --git a/source4/script/mks3param.pl b/source4/script/mks3param.pl
new file mode 100644
index 0000000000..db494e7eb4
--- /dev/null
+++ b/source4/script/mks3param.pl
@@ -0,0 +1,175 @@
+#!/usr/bin/perl
+# Simple script for generating prototypes for C functions
+# 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) = @_;
+	$$public_data .= $d;
+}
+
+sub usage()
+{
+	print "Usage: mks3param.pl [options] [c files]\n";
+	print "OPTIONS:\n";
+	print "  --srcdir=path          Read files relative to this directory\n";
+	print "  --builddir=path        Write file relative to this directory\n";
+	print "  --help                 Print this help message\n\n";
+	exit 0;
+}
+
+GetOptions(
+	'file=s' => sub { my ($f,$v) = @_; $file = $v; },
+	'srcdir=s' => sub { my ($f,$v) = @_; $srcdir = $v; },
+	'builddir=s' => sub { my ($f,$v) = @_; $builddir = $v; },
+	'help' => \&usage
+) or exit(1);
+
+sub normalize_define($$)
+{
+	my ($define, $file) = @_;
+
+	if (not defined($define) and defined($file)) {
+		$define = "__" . uc($file) . "__";
+		$define =~ tr{./}{__};
+		$define =~ tr{\-}{_};
+	} elsif (not defined($define)) {
+		$define = '_S3_PARAM_H_';
+	}
+
+	return $define;
+}
+
+$public_define = normalize_define($public_define, $file);
+
+sub file_load($)
+{
+    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($$)
+{
+	my ($file, $header_name) = @_;
+	$file->("#ifndef $header_name\n");
+	$file->("#define $header_name\n\n");
+	$file->("/* This file was automatically generated by mks3param.pl. DO NOT EDIT */\n\n");
+	$file->("struct loadparm_s3_context\n");
+	$file->("{\n");
+}
+
+sub print_footer($$) 
+{
+	my ($file, $header_name) = @_;
+	$file->("};");
+	$file->("\n#endif /* $header_name */\n\n");
+}
+
+sub handle_loadparm($$) 
+{
+	my ($file,$line) = @_;
+
+	if ($line =~ /^FN_(GLOBAL|LOCAL)_(CONST_STRING|STRING|BOOL|bool|CHAR|INTEGER|LIST)\((\w+),.*\)/o) {
+		my $scope = $1;
+		my $type = $2;
+		my $name = $3;
+
+		my %tmap = (
+			    "BOOL" => "bool ",
+			    "CONST_STRING" => "const char *",
+			    "STRING" => "const char *",
+			    "INTEGER" => "int ",
+			    "CHAR" => "char ",
+			    "LIST" => "const char **",
+			    );
+
+		$file->("\t$tmap{$type} (*$name)(void);\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 =~ /^\/\*\*/) { 
+			$comment = "";
+			$incomment = 1;
+		}
+
+		if ($incomment) {
+			$comment .= $line;
+			if ($line =~ /\*\//) {
+				$incomment = 0;
+			}
+		} 
+
+		# these are ordered for maximum speed
+		next if ($line =~ /^\s/);
+	      
+		next unless ($line =~ /\(/);
+
+		next if ($line =~ /^\/|[;]/);
+
+		if ($line =~ /^FN_/) {
+			handle_loadparm($file, $line);
+		}
+		next;
+	}
+
+	close(FH);
+}
+
+
+print_header(\&public, $public_define);
+
+process_file(\&public, $_) foreach (@ARGV);
+print_footer(\&public, $public_define);
+
+if (not defined($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);
+