diff options
| author | Phil Sutter <phil@nwl.cc> | 2022-03-16 17:14:07 +0100 |
|---|---|---|
| committer | Phil Sutter <phil@nwl.cc> | 2022-03-17 09:55:48 +0100 |
| commit | b1aee6b2238794446feba41778f88703784560f7 (patch) | |
| tree | 13be8d334a7e9a2212e7a468124003fc485d23b1 /iptables/xtables-restore.c | |
| parent | b555bfed542635259c489596630a75fce50aab1b (diff) | |
nft: Reject standard targets as chain names when restoring
Reuse parse_chain() called from do_parse() for '-N' and rename it for a
better description of what it does.
Note that by itself, this patch will likely kill iptables-restore
performance for big rulesets due to the extra extension lookup for chain
lines. A following patch announcing those chains to libxtables will
alleviate that.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Reviewed-by: Florian Westphal <fw@strlen.de>
Diffstat (limited to 'iptables/xtables-restore.c')
| -rw-r--r-- | iptables/xtables-restore.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/iptables/xtables-restore.c b/iptables/xtables-restore.c index b3cf4017..b70a3cb1 100644 --- a/iptables/xtables-restore.c +++ b/iptables/xtables-restore.c @@ -155,10 +155,7 @@ static void xtables_restore_parse_line(struct nft_handle *h, "%s: line %u chain name invalid\n", xt_params->program_name, line); - if (strlen(chain) >= XT_EXTENSION_MAXNAMELEN) - xtables_error(PARAMETER_PROBLEM, - "Invalid chain name `%s' (%u chars max)", - chain, XT_EXTENSION_MAXNAMELEN - 1); + assert_valid_chain_name(chain); policy = strtok(NULL, " \t\n"); DEBUGP("line %u, policy '%s'\n", line, policy); |