diff options
| author | Florian Obser <florian@cvs.openbsd.org> | 2024-06-02 17:33:49 +0000 |
|---|---|---|
| committer | Florian Obser <florian@cvs.openbsd.org> | 2024-06-02 17:33:49 +0000 |
| commit | b7a67f9affe7fb0791e3800dbc541cc199fdab2a (patch) | |
| tree | caae4055e9bd6127dea39a149f60ef3d33bbdb2e | |
| parent | bc36cab6beca9a3075b9e4399fbae83fdb6161c1 (diff) | |
Make sure we find a link-local address and rdomain
pointed out by jsg & miod
| -rw-r--r-- | sbin/dhcp6leased/dhcp6leased.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/sbin/dhcp6leased/dhcp6leased.c b/sbin/dhcp6leased/dhcp6leased.c index 658be71710f..9d9c4d545b4 100644 --- a/sbin/dhcp6leased/dhcp6leased.c +++ b/sbin/dhcp6leased/dhcp6leased.c @@ -1,4 +1,4 @@ -/* $OpenBSD: dhcp6leased.c,v 1.4 2024/06/02 15:43:24 florian Exp $ */ +/* $OpenBSD: dhcp6leased.c,v 1.5 2024/06/02 17:33:48 florian Exp $ */ /* * Copyright (c) 2017, 2021, 2024 Florian Obser <florian@openbsd.org> @@ -750,8 +750,8 @@ void open_udpsock(uint32_t if_index) { struct ifaddrs *ifap, *ifa; - struct sockaddr_in6 *sin6; - int udpsock = -1, rdomain, opt = 1; + struct sockaddr_in6 *sin6 = NULL; + int udpsock = -1, rdomain = -1, opt = 1; char if_name[IF_NAMESIZE]; if (if_indextoname(if_index, if_name) == NULL) { @@ -797,6 +797,18 @@ open_udpsock(uint32_t if_index) } } + if(sin6 == NULL) { + log_warnx("%s: missing link-local address on %s", __func__, + if_name); + goto out; + } + + if(rdomain == -1) { + log_warnx("%s: cannot find rdomain for %s", __func__, + if_name); + goto out; + } + sin6->sin6_port = htons(CLIENT_PORT); log_debug("%s: %s rdomain: %d", __func__, sin6_to_str(sin6), rdomain); |