diff options
Diffstat (limited to 'icmp.c')
| -rw-r--r-- | icmp.c | 13 |
1 files changed, 9 insertions, 4 deletions
@@ -160,6 +160,9 @@ int icmp_tap_handler(const struct ctx *c, int af, const void *addr, if (!ih) return 1; + if (ih->type != ICMP_ECHO && ih->type != ICMP_ECHOREPLY) + return 1; + sa.sin_port = ih->un.echo.id; iref.icmp.id = id = ntohs(ih->un.echo.id); @@ -179,8 +182,9 @@ int icmp_tap_handler(const struct ctx *c, int af, const void *addr, bitmap_set(icmp_act[V4], id); sa.sin_addr = *(struct in_addr *)addr; - sendto(s, ih, sizeof(*ih) + plen, MSG_NOSIGNAL, - (struct sockaddr *)&sa, sizeof(sa)); + if (sendto(s, ih, sizeof(*ih) + plen, MSG_NOSIGNAL, + (struct sockaddr *)&sa, sizeof(sa)) < 0) + debug("ICMP: failed to relay request to socket"); } else if (af == AF_INET6) { union icmp_epoll_ref iref = { .icmp.v6 = 1 }; struct sockaddr_in6 sa = { @@ -216,8 +220,9 @@ int icmp_tap_handler(const struct ctx *c, int af, const void *addr, bitmap_set(icmp_act[V6], id); sa.sin6_addr = *(struct in6_addr *)addr; - sendto(s, ih, sizeof(*ih) + plen, MSG_NOSIGNAL, - (struct sockaddr *)&sa, sizeof(sa)); + if (sendto(s, ih, sizeof(*ih) + plen, MSG_NOSIGNAL, + (struct sockaddr *)&sa, sizeof(sa)) < 1) + debug("ICMPv6: failed to relay request to socket"); } return 1; |