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authorRusty Russell <rusty@rustcorp.com.au>2005-01-03 03:48:40 +0000
committerRusty Russell <rusty@rustcorp.com.au>2005-01-03 03:48:40 +0000
commit3aef54dce4f9bbe0b466478fd33a1d3131efbbb8 (patch)
tree58c303308741dab836833dc15cade877a6bf6939 /extensions/libipt_MARK.c
parent708f7b97a5a7455abf5c3c5a86bf6603c6c7a1c5 (diff)
Extension revision number support (if kernel supports the getsockopts).
Enhance MARK match with second revision. Committed in anticipation of the kernel patch being applied.
Diffstat (limited to 'extensions/libipt_MARK.c')
-rw-r--r--extensions/libipt_MARK.c140
1 files changed, 126 insertions, 14 deletions
diff --git a/extensions/libipt_MARK.c b/extensions/libipt_MARK.c
index bc3dd42e..457f6ad3 100644
--- a/extensions/libipt_MARK.c
+++ b/extensions/libipt_MARK.c
@@ -16,12 +16,16 @@ help(void)
printf(
"MARK target v%s options:\n"
" --set-mark value Set nfmark value\n"
+" --and-mark value Binary AND the nfmark with value\n"
+" --or-mark value Binary OR the nfmark with value\n"
"\n",
IPTABLES_VERSION);
}
static struct option opts[] = {
{ "set-mark", 1, 0, '1' },
+ { "and-mark", 1, 0, '2' },
+ { "or-mark", 1, 0, '3' },
{ 0 }
};
@@ -34,9 +38,9 @@ init(struct ipt_entry_target *t, unsigned int *nfcache)
/* Function which parses command options; returns true if it
ate an option */
static int
-parse(int c, char **argv, int invert, unsigned int *flags,
- const struct ipt_entry *entry,
- struct ipt_entry_target **target)
+parse_v0(int c, char **argv, int invert, unsigned int *flags,
+ const struct ipt_entry *entry,
+ struct ipt_entry_target **target)
{
struct ipt_mark_target_info *markinfo
= (struct ipt_mark_target_info *)(*target)->data;
@@ -56,7 +60,12 @@ parse(int c, char **argv, int invert, unsigned int *flags,
"MARK target: Can't specify --set-mark twice");
*flags = 1;
break;
-
+ case '2':
+ exit_error(PARAMETER_PROBLEM,
+ "MARK target: kernel too old for --and-mark");
+ case '3':
+ exit_error(PARAMETER_PROBLEM,
+ "MARK target: kernel too old for --or-mark");
default:
return 0;
}
@@ -69,7 +78,47 @@ final_check(unsigned int flags)
{
if (!flags)
exit_error(PARAMETER_PROBLEM,
- "MARK target: Parameter --set-mark is required");
+ "MARK target: Parameter --set/and/or-mark"
+ " is required");
+}
+
+/* Function which parses command options; returns true if it
+ ate an option */
+static int
+parse_v1(int c, char **argv, int invert, unsigned int *flags,
+ const struct ipt_entry *entry,
+ struct ipt_entry_target **target)
+{
+ struct ipt_mark_target_info_v1 *markinfo
+ = (struct ipt_mark_target_info_v1 *)(*target)->data;
+
+ switch (c) {
+ case '1':
+ markinfo->mode = IPT_MARK_SET;
+ break;
+ case '2':
+ markinfo->mode = IPT_MARK_AND;
+ break;
+ case '3':
+ markinfo->mode = IPT_MARK_OR;
+ break;
+ default:
+ return 0;
+ }
+
+#ifdef KERNEL_64_USERSPACE_32
+ if (string_to_number_ll(optarg, 0, 0, &markinfo->mark))
+#else
+ if (string_to_number_l(optarg, 0, 0, &markinfo->mark))
+#endif
+ exit_error(PARAMETER_PROBLEM, "Bad MARK value `%s'", optarg);
+
+ if (*flags)
+ exit_error(PARAMETER_PROBLEM,
+ "MARK target: Can't specify --set-mark twice");
+
+ *flags = 1;
+ return 1;
}
#ifdef KERNEL_64_USERSPACE_32
@@ -88,9 +137,9 @@ print_mark(unsigned long mark)
/* Prints out the targinfo. */
static void
-print(const struct ipt_ip *ip,
- const struct ipt_entry_target *target,
- int numeric)
+print_v0(const struct ipt_ip *ip,
+ const struct ipt_entry_target *target,
+ int numeric)
{
const struct ipt_mark_target_info *markinfo =
(const struct ipt_mark_target_info *)target->data;
@@ -100,7 +149,7 @@ print(const struct ipt_ip *ip,
/* Saves the union ipt_targinfo in parsable form to stdout. */
static void
-save(const struct ipt_ip *ip, const struct ipt_entry_target *target)
+save_v0(const struct ipt_ip *ip, const struct ipt_entry_target *target)
{
const struct ipt_mark_target_info *markinfo =
(const struct ipt_mark_target_info *)target->data;
@@ -109,23 +158,86 @@ save(const struct ipt_ip *ip, const struct ipt_entry_target *target)
print_mark(markinfo->mark);
}
+/* Prints out the targinfo. */
+static void
+print_v1(const struct ipt_ip *ip,
+ const struct ipt_entry_target *target,
+ int numeric)
+{
+ const struct ipt_mark_target_info_v1 *markinfo =
+ (const struct ipt_mark_target_info_v1 *)target->data;
+
+ switch (markinfo->mode) {
+ case IPT_MARK_SET:
+ printf("MARK set ");
+ break;
+ case IPT_MARK_AND:
+ printf("MARK and ");
+ break;
+ case IPT_MARK_OR:
+ printf("MARK or ");
+ break;
+ }
+ print_mark(markinfo->mark);
+}
+
+/* Saves the union ipt_targinfo in parsable form to stdout. */
+static void
+save_v1(const struct ipt_ip *ip, const struct ipt_entry_target *target)
+{
+ const struct ipt_mark_target_info_v1 *markinfo =
+ (const struct ipt_mark_target_info_v1 *)target->data;
+
+ switch (markinfo->mode) {
+ case IPT_MARK_SET:
+ printf("--set-mark ");
+ break;
+ case IPT_MARK_AND:
+ printf("--and-mark ");
+ break;
+ case IPT_MARK_OR:
+ printf("--or-mark ");
+ break;
+ }
+ print_mark(markinfo->mark);
+}
+
static
-struct iptables_target mark = {
+struct iptables_target mark_v0 = {
.next = NULL,
.name = "MARK",
.version = IPTABLES_VERSION,
+ .revision = 0,
.size = IPT_ALIGN(sizeof(struct ipt_mark_target_info)),
.userspacesize = IPT_ALIGN(sizeof(struct ipt_mark_target_info)),
.help = &help,
.init = &init,
- .parse = &parse,
+ .parse = &parse_v0,
+ .final_check = &final_check,
+ .print = &print_v0,
+ .save = &save_v0,
+ .extra_opts = opts
+};
+
+static
+struct iptables_target mark_v1 = {
+ .next = NULL,
+ .name = "MARK",
+ .version = IPTABLES_VERSION,
+ .revision = 1,
+ .size = IPT_ALIGN(sizeof(struct ipt_mark_target_info_v1)),
+ .userspacesize = IPT_ALIGN(sizeof(struct ipt_mark_target_info_v1)),
+ .help = &help,
+ .init = &init,
+ .parse = &parse_v1,
.final_check = &final_check,
- .print = &print,
- .save = &save,
+ .print = &print_v1,
+ .save = &save_v1,
.extra_opts = opts
};
void _init(void)
{
- register_target(&mark);
+ register_target(&mark_v0);
+ register_target(&mark_v1);
}