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BUG/MINOR: resolvers: do not reject host names of length 255 in SRV records

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An off-by-one issue in buffer size calculation used to limit the output
of resolv_dn_label_to_str() to 254 instead of 255.

This must be backported to 2.0.
This commit is contained in:
Willy Tarreau 2021-10-14 08:00:38 +02:00
parent 947ae125cc
commit 85c15e6bff
1 changed files with 2 additions and 2 deletions
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4
src/resolvers.c
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@ -778,10 +778,10 @@ srv_found:
if (!srv->hostname_dn) { if (!srv->hostname_dn) {
const char *msg = NULL; const char *msg = NULL;
char hostname[DNS_MAX_NAME_SIZE]; char hostname[DNS_MAX_NAME_SIZE+1];
if (resolv_dn_label_to_str(item->target, item->data_len+1, if (resolv_dn_label_to_str(item->target, item->data_len+1,
hostname, DNS_MAX_NAME_SIZE) == -1) { hostname, sizeof(hostname)) == -1) {
HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock); HA_SPIN_UNLOCK(SERVER_LOCK, &srv->lock);
continue; continue;
} }