From a392cf0e9b11b01352d02e81fbd5ad4da49bce94 Mon Sep 17 00:00:00 2001 From: Phil Sutter Date: Fri, 26 Jan 2024 01:50:22 +0100 Subject: libxtables: xtoptions: Respect min/max values when completing ranges If an extension defines a minimum/maximum valid value for an option's range argument, treat this as the lower/upper boundary to use when completing (half) open ranges. Signed-off-by: Phil Sutter --- libxtables/xtoptions.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'libxtables/xtoptions.c') diff --git a/libxtables/xtoptions.c b/libxtables/xtoptions.c index 0a995a63..774d0ee6 100644 --- a/libxtables/xtoptions.c +++ b/libxtables/xtoptions.c @@ -289,13 +289,16 @@ static void xtopt_parse_mint(struct xt_option_call *cb) const struct xt_option_entry *entry = cb->entry; const char *arg; size_t esize = xtopt_esize_by_type(entry->type); - const uintmax_t lmax = xtopt_max_by_type(entry->type); + uintmax_t lmax = xtopt_max_by_type(entry->type); + uintmax_t value, lmin = entry->min; void *put = XTOPT_MKPTR(cb); - uintmax_t value, lmin = 0; unsigned int maxiter; char *end = ""; char sep = ':'; + if (entry->max && entry->max < lmax) + lmax = entry->max; + maxiter = entry->size / esize; if (maxiter == 0) maxiter = ARRAY_SIZE(cb->val.u32_range); @@ -312,7 +315,7 @@ static void xtopt_parse_mint(struct xt_option_call *cb) if (*arg == '\0' || *arg == sep) { /* Default range components when field not spec'd. */ end = (char *)arg; - value = (cb->nvals == 1) ? lmax : 0; + value = (cb->nvals == 1) ? lmax : lmin; } else { if (!xtables_strtoul(arg, &end, &value, lmin, lmax)) xt_params->exit_err(PARAMETER_PROBLEM, -- cgit v1.2.3