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Code

Use getaddrinfo(3) to resolve hostnames / ip addresses.

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OK dlg
This commit is contained in:
florian 2024-08-21 10:35:12 +00:00
parent 09cdc875bf
commit ac6360cb39
1 changed files with 11 additions and 9 deletions
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20
usr.sbin/dhcrelay/dhcrelay.c
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@ -1,4 +1,4 @@
/* $OpenBSD: dhcrelay.c,v 1.66 2021/10/24 21:24:18 deraadt Exp $ */
/* $OpenBSD: dhcrelay.c,v 1.67 2024/08/21 10:35:12 florian Exp $ */
/*
* Copyright (c) 2004 Henning Brauer <henning@cvs.openbsd.org>
@ -162,12 +162,15 @@ main(int argc, char *argv[])
}
while (argc > 0) {
struct hostent *he;
struct addrinfo hints, *res;
struct in_addr ia, *iap = NULL;
if ((sp = calloc(1, sizeof(*sp))) == NULL)
fatalx("calloc");
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_INET;
if ((sp->intf = register_interface(argv[0], got_one,
1)) != NULL) {
if (drm == DRM_LAYER3)
@ -185,15 +188,14 @@ main(int argc, char *argv[])
continue;
}
if (inet_aton(argv[0], &ia))
iap = &ia;
else {
he = gethostbyname(argv[0]);
if (!he)
if (getaddrinfo(argv[0], NULL, &hints, &res) != 0)
log_warnx("%s: host unknown", argv[0]);
else
iap = ((struct in_addr *)he->h_addr_list[0]);
else {
ia = ((struct sockaddr_in *)res->ai_addr)->sin_addr;
iap = &ia;
freeaddrinfo(res);
}
if (iap) {
if (drm == DRM_LAYER2)
fatalx("don't mix interfaces with hosts");