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netfilter_nft/nftnlrdr_misc.c: comments and warning in parse_rule_payload()

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Thomas Bernard 2023-11-14 23:48:15 +01:00
parent 424f5c259f
commit 4c68985304
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1 changed files with 10 additions and 0 deletions
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miniupnpd/netfilter_nft/nftnlrdr_misc.c
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@ -359,15 +359,25 @@ parse_rule_payload(struct nftnl_expr *e, rule_t *r)
} else if (offset == offsetof(struct ipv6hdr, saddr) && } else if (offset == offsetof(struct ipv6hdr, saddr) &&
len == sizeof(struct in6_addr) * 2) { len == sizeof(struct in6_addr) * 2) {
*regptr = RULE_REG_IP6_SD_ADDR; *regptr = RULE_REG_IP6_SD_ADDR;
} else {
syslog(LOG_WARNING,
"%s: Unsupported payload: (dreg:%u, base:NETWORK_HEADER, offset:%u, len:%u)",
"parse_rule_payload", dreg, offset, len);
} }
break; break;
case NFT_PAYLOAD_TRANSPORT_HEADER: case NFT_PAYLOAD_TRANSPORT_HEADER:
/* in both UDP and TCP headers, source port is at offset 0,
* destination port at offset 2 */
if (offset == offsetof(struct tcphdr, dest) && if (offset == offsetof(struct tcphdr, dest) &&
len == sizeof(uint16_t)) { len == sizeof(uint16_t)) {
*regptr = RULE_REG_TCP_DPORT; *regptr = RULE_REG_TCP_DPORT;
} else if (offset == offsetof(struct tcphdr, source) && } else if (offset == offsetof(struct tcphdr, source) &&
len == sizeof(uint16_t) * 2) { len == sizeof(uint16_t) * 2) {
*regptr = RULE_REG_TCP_SD_PORT; *regptr = RULE_REG_TCP_SD_PORT;
} else {
syslog(LOG_WARNING,
"%s: Unsupported payload: (dreg:%u, base:TRANSPORT_HEADER, offset:%u, len:%u)",
"parse_rule_payload", dreg, offset, len);
} }
break; break;
default: default: