From 60756e7f8be9242b606f1b5fbcb38f45e4de29c5 Mon Sep 17 00:00:00 2001 From: Jan Engelhardt Date: Sun, 6 Mar 2011 15:21:24 +0100 Subject: libxt_MARK: use guided option parser Signed-off-by: Jan Engelhardt --- extensions/libxt_mark.c | 95 +++++++++++++------------------------------------ 1 file changed, 25 insertions(+), 70 deletions(-) (limited to 'extensions/libxt_mark.c') diff --git a/extensions/libxt_mark.c b/extensions/libxt_mark.c index d3c17277..7f8c995c 100644 --- a/extensions/libxt_mark.c +++ b/extensions/libxt_mark.c @@ -1,11 +1,5 @@ -/* Shared library add-on to iptables to add NFMARK matching support. */ #include #include -#include -#include -#include -#include - #include #include @@ -15,7 +9,7 @@ struct xt_mark_info { }; enum { - F_MARK = 1 << 0, + O_MARK = 0, }; static void mark_mt_help(void) @@ -25,62 +19,32 @@ static void mark_mt_help(void) "[!] --mark value[/mask] Match nfmark value with optional mask\n"); } -static const struct option mark_mt_opts[] = { - {.name = "mark", .has_arg = true, .val = '1'}, - XT_GETOPT_TABLEEND, +static const struct xt_option_entry mark_mt_opts[] = { + {.name = "mark", .id = O_MARK, .type = XTTYPE_MARKMASK32, + .flags = XTOPT_MAND | XTOPT_INVERT}, + XTOPT_TABLEEND, }; -static int mark_mt_parse(int c, char **argv, int invert, unsigned int *flags, - const void *entry, struct xt_entry_match **match) +static void mark_mt_parse(struct xt_option_call *cb) { - struct xt_mark_mtinfo1 *info = (void *)(*match)->data; - unsigned int mark, mask = UINT32_MAX; - char *end; - - switch (c) { - case '1': /* --mark */ - xtables_param_act(XTF_ONLY_ONCE, "mark", "--mark", *flags & F_MARK); - if (!xtables_strtoui(optarg, &end, &mark, 0, UINT32_MAX)) - xtables_param_act(XTF_BAD_VALUE, "mark", "--mark", optarg); - if (*end == '/') - if (!xtables_strtoui(end + 1, &end, &mask, 0, UINT32_MAX)) - xtables_param_act(XTF_BAD_VALUE, "mark", "--mark", optarg); - if (*end != '\0') - xtables_param_act(XTF_BAD_VALUE, "mark", "--mark", optarg); - - if (invert) - info->invert = true; - info->mark = mark; - info->mask = mask; - *flags |= F_MARK; - return true; - } - return false; + struct xt_mark_mtinfo1 *info = cb->data; + + xtables_option_parse(cb); + if (cb->invert) + info->invert = true; + info->mark = cb->val.mark; + info->mask = cb->val.mask; } -static int -mark_parse(int c, char **argv, int invert, unsigned int *flags, - const void *entry, struct xt_entry_match **match) +static void mark_parse(struct xt_option_call *cb) { - struct xt_mark_info *markinfo = (struct xt_mark_info *)(*match)->data; - - switch (c) { - char *end; - case '1': - xtables_check_inverse(optarg, &invert, &optind, 0, argv); - markinfo->mark = strtoul(optarg, &end, 0); - if (*end == '/') { - markinfo->mask = strtoul(end+1, &end, 0); - } else - markinfo->mask = 0xffffffff; - if (*end != '\0' || end == optarg) - xtables_error(PARAMETER_PROBLEM, "Bad MARK value \"%s\"", optarg); - if (invert) - markinfo->invert = 1; - *flags = 1; - break; - } - return 1; + struct xt_mark_info *markinfo = cb->data; + + xtables_option_parse(cb); + if (cb->invert) + markinfo->invert = 1; + markinfo->mark = cb->val.mark; + markinfo->mask = cb->val.mask; } static void print_mark(unsigned int mark, unsigned int mask) @@ -91,13 +55,6 @@ static void print_mark(unsigned int mark, unsigned int mask) printf(" 0x%x", mark); } -static void mark_mt_check(unsigned int flags) -{ - if (flags == 0) - xtables_error(PARAMETER_PROBLEM, - "mark match: The --mark option is required"); -} - static void mark_mt_print(const void *ip, const struct xt_entry_match *match, int numeric) { @@ -154,11 +111,10 @@ static struct xtables_match mark_mt_reg[] = { .size = XT_ALIGN(sizeof(struct xt_mark_info)), .userspacesize = XT_ALIGN(sizeof(struct xt_mark_info)), .help = mark_mt_help, - .parse = mark_parse, - .final_check = mark_mt_check, .print = mark_print, .save = mark_save, - .extra_opts = mark_mt_opts, + .x6_parse = mark_parse, + .x6_options = mark_mt_opts, }, { .version = XTABLES_VERSION, @@ -168,11 +124,10 @@ static struct xtables_match mark_mt_reg[] = { .size = XT_ALIGN(sizeof(struct xt_mark_mtinfo1)), .userspacesize = XT_ALIGN(sizeof(struct xt_mark_mtinfo1)), .help = mark_mt_help, - .parse = mark_mt_parse, - .final_check = mark_mt_check, .print = mark_mt_print, .save = mark_mt_save, - .extra_opts = mark_mt_opts, + .x6_parse = mark_mt_parse, + .x6_options = mark_mt_opts, }, }; -- cgit v1.2.3