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From 9ba48c2e4f1a8a0670ffc40c02ac6a909c62668e Mon Sep 17 00:00:00 2001
From: Natanael Copa <ncopa@alpinelinux.org>
Date: Wed, 25 May 2016 09:37:54 +0200
Subject: [PATCH] check result from res_mkquery
we don't want to try send a query that may be malformatted.
---
src/network/lookup_name.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/src/network/lookup_name.c b/src/network/lookup_name.c
index 86f90ac..d3d97b4 100644
--- a/src/network/lookup_name.c
+++ b/src/network/lookup_name.c
@@ -145,11 +145,15 @@ static int name_from_dns(struct address buf[static MAXADDRS], char canon[static
if (family != AF_INET6) {
qlens[nq] = __res_mkquery(0, name, 1, RR_A, 0, 0, 0,
qbuf[nq], sizeof *qbuf);
+ if (qlens[nq] == -1)
+ return EAI_NONAME;
nq++;
}
if (family != AF_INET) {
qlens[nq] = __res_mkquery(0, name, 1, RR_AAAA, 0, 0, 0,
qbuf[nq], sizeof *qbuf);
+ if (qlens[nq] == -1)
+ return EAI_NONAME;
nq++;
}
--
2.8.4
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