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xt_lscan: extend info struct to support more flags (without size change)

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This commit is contained in:
Jan Engelhardt
2021-01-20 02:50:01 +01:00
parent a238253509
commit f59a4eb9d9
3 changed files with 24 additions and 15 deletions
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16
extensions/libxt_lscan.c
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@@ -45,16 +45,16 @@ static int lscan_mt_parse(int c, char **argv, int invert,
switch (c) {
case 'c':
info->match_cn = true;
info->match_fl3 |= LSCAN_FL3_CN;
return true;
case 'g':
info->match_gr = true;
info->match_fl4 |= LSCAN_FL4_GR;
return true;
case 's':
info->match_syn = true;
info->match_fl2 |= LSCAN_FL2_SYN;
return true;
case 'x':
info->match_stealth = true;
info->match_fl1 |= LSCAN_FL1_STEALTH;
return true;
}
return false;
@@ -68,13 +68,13 @@ static void lscan_mt_save(const void *ip, const struct xt_entry_match *match)
{
const struct xt_lscan_mtinfo *info = (const void *)(match->data);
if (info->match_stealth)
if (info->match_fl1 & LSCAN_FL1_STEALTH)
printf(" --stealth ");
if (info->match_syn)
if (info->match_fl2 & LSCAN_FL2_SYN)
printf(" --synscan ");
if (info->match_cn)
if (info->match_fl3 & LSCAN_FL3_CN)
printf(" --cnscan ");
if (info->match_gr)
if (info->match_fl4 & LSCAN_FL4_GR)
printf(" --grscan ");
}