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>

4 files changed, 146 insertions, 63 deletions

diff --git a/lib/param/wscript_build b/lib/param/wscript_build
index 10e05a3072..0e1a2e04f3 100644
--- a/lib/param/wscript_build
+++ b/lib/param/wscript_build
@@ -11,6 +11,7 @@ bld.SAMBA_GENERATOR('s3_param_h',
                     target='s3_param.h',
                     rule='${PERL} ${SRC[0].abspath(env)} ${SRC[1].abspath(env)} ${SRC[2].abspath(env)} --file ${TGT}')
 
+
 bld.SAMBA_GENERATOR('param_global_h',
                     source= '../../script/mkparamdefs.pl loadparm.c param_functions.c',
                     target='param_global.h',
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);
diff --git a/source3/param/loadparm_ctx.c b/source3/param/loadparm_ctx.c
index 63ead53ac1..5cbc920529 100644
--- a/source3/param/loadparm_ctx.c
+++ b/source3/param/loadparm_ctx.c
@@ -56,69 +56,7 @@ static bool lp_load_for_s4_ctx(const char *filename)
 	return status;
 }
 
-/* These are in the order that they appear in the s4 loadparm file.
- * All of the s4 loadparm functions should be here eventually, once
- * they are implemented in the s3 loadparm, have the same format (enum
- * values in particular) and defaults. */
-static const struct loadparm_s3_helpers s3_fns =
-{
-	.get_parametric = lp_parm_const_string_service,
-	.get_parm_struct = lp_get_parameter,
-	.get_parm_ptr = lp_parm_ptr,
-	.get_service = lp_service_for_s4_ctx,
-	.get_servicebynum = lp_servicebynum_for_s4_ctx,
-	.get_default_loadparm_service = lp_default_loadparm_service,
-	.get_numservices = lp_numservices,
-	.load = lp_load_for_s4_ctx,
-	.set_cmdline = lp_set_cmdline,
-	.dump = lp_dump,
-
-	._server_role = lp__server_role,
-	._security = lp__security,
-	._domain_master = lp__domain_master,
-	._domain_logons = lp__domain_logons,
-
-	.winbind_separator = lp_winbind_separator,
-	.template_homedir = lp_template_homedir,
-	.template_shell = lp_template_shell,
-
-	.dos_charset = lp_dos_charset,
-	.unix_charset = lp_unix_charset,
-
-	.realm = lp_realm,
-	.dnsdomain = lp_dnsdomain,
-	.socket_options = lp_socket_options,
-	.workgroup = lp_workgroup,
-
-	.netbios_name = lp_netbios_name,
-	.netbios_scope = lp_netbios_scope,
-	.netbios_aliases = lp_netbios_aliases,
-
-	.lanman_auth = lp_lanman_auth,
-	.ntlm_auth = lp_ntlm_auth,
-
-	.client_plaintext_auth = lp_client_plaintext_auth,
-	.client_lanman_auth = lp_client_lanman_auth,
-	.client_ntlmv2_auth = lp_client_ntlmv2_auth,
-	.client_use_spnego_principal = lp_client_use_spnego_principal,
-
-	.private_dir = lp_private_dir,
-	.ncalrpc_dir = lp_ncalrpc_dir,
-	.lockdir = lp_lockdir,
-
-	.passdb_backend = lp_passdb_backend,
-
-	.host_msdfs = lp_host_msdfs,
-	.unix_extensions = lp_unix_extensions,
-	.use_spnego = lp_use_spnego,
-	.use_mmap = lp_use_mmap,
-	.use_ntdb = lp_use_ntdb,
-
-	.srv_minprotocol = lp_srv_minprotocol,
-	.srv_maxprotocol = lp_srv_maxprotocol,
-
-	.passwordserver = lp_passwordserver
-};
+#include "loadparm_ctx_table.c"
 
 const struct loadparm_s3_helpers *loadparm_s3_helpers(void)
 {
diff --git a/source3/param/wscript_build b/source3/param/wscript_build
index 643c27eac4..673cb4d049 100644
--- a/source3/param/wscript_build
+++ b/source3/param/wscript_build
@@ -18,6 +18,11 @@ bld.SAMBA_GENERATOR('s3_param_proto_h',
                     target='param_proto.h',
                     rule='${PERL} ${SRC[0].abspath(env)} ${SRC[1].abspath(env)} ${SRC[2].abspath(env)} --file ${TGT}')
 
+bld.SAMBA_GENERATOR('s3_loadparm_ctx_table_c',
+                    source= ' ../../script/mks3param_ctx_table.pl ../../lib/param/loadparm.c ../../lib/param/param_functions.c',
+                    target='loadparm_ctx_table.c',
+                    rule='${PERL} ${SRC[0].abspath(env)} ${SRC[1].abspath(env)} ${SRC[2].abspath(env)} --file ${TGT}')
+
 bld.SAMBA3_PYTHON('pys3param',
                   source='pyparam.c',
                   deps='param',