[Minor] Implement `hosts` parameter in DNS config

diff --git a/src/libserver/dns.c b/src/libserver/dns.c
index 1d114ec96791805fbe982f7efc37d58099f61a47..8fe0c6f92991a4eaabd2a11aa768e070d531e9bc 100644 (file)
--- a/src/libserver/dns.c
+++ b/src/libserver/dns.c
@@ -766,18 +766,32 @@ rspamd_dns_resolver_config_ucl (struct rspamd_config *cfg,
        }
 
        hosts = ucl_object_lookup (dns_section, "hosts");
+
        if (hosts == NULL) {
                /* Read normal `/etc/hosts` file */
                rspamd_dns_read_hosts_file (cfg, dns_resolver, "/etc/hosts");
        }
        else if (ucl_object_type (hosts) == UCL_NULL) {
-
+               /* Do nothing, hosts are explicitly disabled */
        }
        else if (ucl_object_type (hosts) == UCL_STRING) {
-
+               if (!rspamd_dns_read_hosts_file (cfg, dns_resolver, ucl_object_tostring (hosts))) {
+                       msg_err_config ("cannot read hosts file %s", ucl_object_tostring (hosts));
+               }
        }
        else if (ucl_object_type (hosts) == UCL_ARRAY) {
+               const ucl_object_t *cur;
+               ucl_object_iter_t it = NULL;
 
+               while ((cur = ucl_object_iterate (hosts, &it, true)) != NULL) {
+                       if (!rspamd_dns_read_hosts_file (cfg, dns_resolver, ucl_object_tostring (cur))) {
+                               msg_err_config ("cannot read hosts file %s", ucl_object_tostring (cur));
+                       }
+               }
+       }
+       else {
+               msg_err_config ("invalid type for hosts parameter: %s",
+                               ucl_object_type_to_string (ucl_object_type (hosts)));
        }
 
        fails_cache_size = ucl_object_lookup (dns_section, "fails_cache_size");