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BUG/MEDIUM: resolvers: Accept to create resolution without hostname

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A regression was introduced by commit 6cf2401ed ("BUG/MEDIUM: resolvers:
Make resolution owns its hostname_dn value"). In fact, it is possible (an
allowed ?!) to create a resolution without hostname (hostname_dn ==
NULL). It only happens on startup for a server relying on a resolver but
defined with an IP address and not a hostname

Because of the patch above, an error is triggered during the configuration
parsing when this happens, while it should be accepted.

This patch must be backported with the commit above.
This commit is contained in:
Christopher Faulet 2025-09-12 11:52:04 +02:00
parent 6cf2401eda
commit e6a9192af6
1 changed files with 6 additions and 4 deletions
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4
src/resolvers.c
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@ -1943,7 +1943,7 @@ static struct resolv_resolution *resolv_pick_resolution(struct resolvers *resolv
struct resolv_resolution *res = NULL; struct resolv_resolution *res = NULL;
if (!*hostname_dn) if (!*hostname_dn)
goto err; goto from_pool;
/* Search for same hostname and query type in resolutions.curr */ /* Search for same hostname and query type in resolutions.curr */
list_for_each_entry(res, &resolvers->resolutions.curr, list) { list_for_each_entry(res, &resolvers->resolutions.curr, list) {
@ -1981,9 +1981,11 @@ static struct resolv_resolution *resolv_pick_resolution(struct resolvers *resolv
res->prefered_query_type = query_type; res->prefered_query_type = query_type;
res->query_type = query_type; res->query_type = query_type;
if (*hostname_dn) {
res->hostname_dn = strdup(*hostname_dn); res->hostname_dn = strdup(*hostname_dn);
if (res->hostname_dn == NULL) if (res->hostname_dn == NULL)
goto err; goto err;
}
res->hostname_dn_len = hostname_dn_len; res->hostname_dn_len = hostname_dn_len;
++resolution_uuid; ++resolution_uuid;