diff options
Diffstat (limited to 'extensions')
| -rw-r--r-- | extensions/libxt_MARK.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/extensions/libxt_MARK.c b/extensions/libxt_MARK.c index 43aa9779..b765af6c 100644 --- a/extensions/libxt_MARK.c +++ b/extensions/libxt_MARK.c @@ -1,3 +1,4 @@ +#include <getopt.h> #include <stdbool.h> #include <stdio.h> #include <xtables.h> @@ -245,6 +246,87 @@ static void mark_tg_save(const void *ip, const struct xt_entry_target *target) printf(" --set-xmark 0x%x/0x%x", info->mark, info->mask); } +static void mark_tg_arp_save(const void *ip, const struct xt_entry_target *target) +{ + const struct xt_mark_tginfo2 *info = (const void *)target->data; + + if (info->mark == 0) + printf(" --and-mark %x", (unsigned int)(uint32_t)~info->mask); + else if (info->mark == info->mask) + printf(" --or-mark %x", info->mark); + else + printf(" --set-mark %x", info->mark); +} + +static void mark_tg_arp_print(const void *ip, + const struct xt_entry_target *target, int numeric) +{ + mark_tg_arp_save(ip, target); +} + +#define MARK_OPT 1 +#define AND_MARK_OPT 2 +#define OR_MARK_OPT 3 + +static struct option mark_tg_arp_opts[] = { + { .name = "set-mark", .has_arg = required_argument, .flag = 0, .val = MARK_OPT }, + { .name = "and-mark", .has_arg = required_argument, .flag = 0, .val = AND_MARK_OPT }, + { .name = "or-mark", .has_arg = required_argument, .flag = 0, .val = OR_MARK_OPT }, + { .name = NULL} +}; + +static int +mark_tg_arp_parse(int c, char **argv, int invert, unsigned int *flags, + const void *entry, struct xt_entry_target **target) +{ + struct xt_mark_tginfo2 *info = + (struct xt_mark_tginfo2 *)(*target)->data; + int i; + + switch (c) { + case MARK_OPT: + if (sscanf(argv[optind-1], "%x", &i) != 1) { + xtables_error(PARAMETER_PROBLEM, + "Bad mark value `%s'", optarg); + return 0; + } + info->mark = i; + if (*flags) + xtables_error(PARAMETER_PROBLEM, + "MARK: Can't specify --set-mark twice"); + *flags = 1; + break; + case AND_MARK_OPT: + if (sscanf(argv[optind-1], "%x", &i) != 1) { + xtables_error(PARAMETER_PROBLEM, + "Bad mark value `%s'", optarg); + return 0; + } + info->mark = 0; + info->mask = ~i; + if (*flags) + xtables_error(PARAMETER_PROBLEM, + "MARK: Can't specify --and-mark twice"); + *flags = 1; + break; + case OR_MARK_OPT: + if (sscanf(argv[optind-1], "%x", &i) != 1) { + xtables_error(PARAMETER_PROBLEM, + "Bad mark value `%s'", optarg); + return 0; + } + info->mark = info->mask = i; + if (*flags) + xtables_error(PARAMETER_PROBLEM, + "MARK: Can't specify --or-mark twice"); + *flags = 1; + break; + default: + return 0; + } + return 1; +} + static int mark_tg_xlate(struct xt_xlate *xl, const struct xt_xlate_tg_params *params) { @@ -335,6 +417,19 @@ static struct xtables_target mark_tg_reg[] = { .x6_options = mark_tg_opts, .xlate = mark_tg_xlate, }, + { + .version = XTABLES_VERSION, + .name = "MARK", + .revision = 2, + .family = NFPROTO_ARP, + .size = XT_ALIGN(sizeof(struct xt_mark_tginfo2)), + .userspacesize = XT_ALIGN(sizeof(struct xt_mark_tginfo2)), + .help = mark_tg_help, + .print = mark_tg_arp_print, + .save = mark_tg_arp_save, + .parse = mark_tg_arp_parse, + .extra_opts = mark_tg_arp_opts, + }, }; void _init(void) |