- require llh 2.6.7.0-3 (previous versions had broken ip{,6}t API)

[packages/iptables.git] / mark-bitwise-ops.patch.userspace

--- userspace/extensions/libipt_mark.c.old	2002-09-20 17:25:13.000000000 +0200
+++ userspace/extensions/libipt_mark.c	2003-04-07 03:07:45.000000000 +0200
@@ -14,13 +14,17 @@
 {
 	printf(
 "MARK match v%s options:\n"
-"[!] --mark value[/mask]         Match nfmark value with optional mask\n"
+"[!] --mark    value           Match nfmark value\n"
+"[!] --markor  value/mask      Match nfmark value, the packets nfmark is ORed with mask before matching.\n"
+"[!] --markand value/mask      Match nfmark value, the packets nfmark is ORed with mask before matching.\n"
 "\n",
 IPTABLES_VERSION);
 }
 
 static struct option opts[] = {
 	{ "mark", 1, 0, '1' },
+	{ "markor", 1, 0, '2' },
+	{ "markand", 1, 0, '3' },
 	{0}
 };
 
@@ -41,45 +45,60 @@
       struct ipt_entry_match **match)
 {
 	struct ipt_mark_info *markinfo = (struct ipt_mark_info *)(*match)->data;
+	char *end;
 
-	switch (c) {
-		char *end;
-	case '1':
-		check_inverse(optarg, &invert, &optind, 0);
+	if ((c=='1') || (c=='2') || (c=='3')) // we ate an option ?
+        {
+                if (*flags)
+                        exit_error(PARAMETER_PROBLEM, "mark match: can specify only one action");
 		markinfo->mark = strtoul(optarg, &end, 0);
-		if (*end == '/') {
-			markinfo->mask = strtoul(end+1, &end, 0);
-		} else
-			markinfo->mask = 0xffffffff;
-		if (*end != '\0' || end == optarg)
-			exit_error(PARAMETER_PROBLEM, "Bad MARK value `%s'", optarg);
+		if (((*end != '\0') && (*end != '/')) || (end == optarg))
+			exit_error(PARAMETER_PROBLEM, "Bad mark value `%s'", optarg);
 		if (invert)
 			markinfo->invert = 1;
-		*flags = 1;
+                *flags = 1;
+        }
+	else
+		return 0;
+
+	switch (c) {
+
+	case '1':
+		markinfo->bit_op = IPT_MARK_BIT_OP_NONE;
+		markinfo->mask = 0;
 		break;
 
+	case '2':
+		if (*end != '/')
+			exit_error(PARAMETER_PROBLEM, "mark match: you must specify a mask when using markor\n");
+		markinfo->mask = strtoul(end+1, &end, 0);
+                if (*end != '\0' || end == optarg)
+                        exit_error(PARAMETER_PROBLEM, "Bad mark OR value `%s'", optarg);
+		markinfo->bit_op = IPT_MARK_BIT_OP_OR;
+                break;
+
+	case '3':
+		if (*end != '/')
+			exit_error(PARAMETER_PROBLEM, "mark match: you must specify a mask when using markand\n");
+		markinfo->mask = strtoul(end+1, &end, 0);
+                if (*end != '\0' || end == optarg)
+                        exit_error(PARAMETER_PROBLEM, "Bad mark AND value `%s'", optarg);
+		markinfo->bit_op = IPT_MARK_BIT_OP_AND;
+                break;
+
 	default:
-		return 0;
+		break; /* will never happen, but at least no warning */
 	}
 	return 1;
 }
 
-static void
-print_mark(unsigned long mark, unsigned long mask, int numeric)
-{
-	if(mask != 0xffffffff)
-		printf("0x%lx/0x%lx ", mark, mask);
-	else
-		printf("0x%lx ", mark);
-}
-
 /* Final check; must have specified --mark. */
 static void
 final_check(unsigned int flags)
 {
 	if (!flags)
 		exit_error(PARAMETER_PROBLEM,
-			   "MARK match: You must specify `--mark'");
+			   "MARK match: you must specify a mark to match");
 }
 
 /* Prints out the matchinfo. */
@@ -90,12 +109,15 @@
 {
 	struct ipt_mark_info *info = (struct ipt_mark_info *)match->data;
 
-	printf("MARK match ");
-
+	printf("MARK ");
+	if (info->bit_op == IPT_MARK_BIT_OP_AND)
+		printf("& 0x%lx ", info->mask);
+	else
+		if (info->bit_op == IPT_MARK_BIT_OP_OR)
+			printf("| 0x%lx ", info->mask);
 	if (info->invert)
-		printf("!");
-	
-	print_mark(info->mark, info->mask, numeric);
+		printf("! ");
+	printf("match 0x%lx ", info->mark);
 }
 
 /* Saves the union ipt_matchinfo in parsable form to stdout. */
@@ -107,8 +129,18 @@
 	if (info->invert)
 		printf("! ");
 	
-	printf("--mark ");
-	print_mark(info->mark, info->mask, 0);
+	switch (info->bit_op)
+	{
+	case IPT_MARK_BIT_OP_AND :
+		printf("--markand 0x%lx/0x%lx ", info->mark, info->mask);
+		break;
+	case IPT_MARK_BIT_OP_OR :
+		printf("--markor 0x%lx/0x%lx ", info->mark, info->mask);
+		break;
+	case IPT_MARK_BIT_OP_NONE :
+		printf("--mark 0x%lx ", info->mark);
+		break;
+	}
 }
 
 static