diff options
| -rw-r--r-- | src/router.c | 56 |
1 files changed, 1 insertions, 55 deletions
diff --git a/src/router.c b/src/router.c index fffdc4c..5f3921d 100644 --- a/src/router.c +++ b/src/router.c @@ -130,66 +130,12 @@ static void sigusr1_refresh(_unused int signal) uloop_timeout_set(&iface->timer_rs, 1000); } -static int router_icmpv6_valid(struct sockaddr_in6 *source, uint8_t *data, size_t len) -{ - struct icmp6_hdr *hdr = (struct icmp6_hdr *)data; - struct icmpv6_opt *opt; - size_t optlen = len - sizeof(*hdr); - - /* Hoplimit is already checked in odhcpd_receive_packets */ - if (len < sizeof(*hdr)) - return 0; - - if (hdr->icmp6_code) - return 0; - - switch (hdr->icmp6_type) { - case ND_ROUTER_ADVERT: - if (!IN6_IS_ADDR_LINKLOCAL(&source->sin6_addr)) - return 0; - - opt = (struct icmpv6_opt *)((struct nd_router_advert *)data + 1); - break; - - case ND_ROUTER_SOLICIT: - opt = (struct icmpv6_opt *)((struct nd_router_solicit *)data + 1); - break; - - default: - return 0; - } - - while (optlen > 0) { - size_t l = opt->len << 3; - - if (optlen < sizeof(*opt)) - return 0; - - if (l > optlen || l == 0) - return 0; - - if (opt->type == ND_OPT_SOURCE_LINKADDR && IN6_IS_ADDR_UNSPECIFIED(&source->sin6_addr) && - hdr->icmp6_type == ND_ROUTER_SOLICIT) { - return 0; - } - - opt = (struct icmpv6_opt *)(((uint8_t *)opt) + l); - - optlen -= l; - } - - return 1; -} // Event handler for incoming ICMPv6 packets -static void handle_icmpv6(void *addr, void *data, size_t len, +static void handle_icmpv6(_unused void *addr, void *data, size_t len, struct interface *iface) { struct icmp6_hdr *hdr = data; - - if (!router_icmpv6_valid(addr, data, len)) - return; - if ((iface->ra == RELAYD_SERVER && !iface->master)) { // Server mode if (hdr->icmp6_type == ND_ROUTER_SOLICIT) send_router_advert(&iface->timer_rs); |