+ /* dns parameter.
+ * weight:hostname.
+ * define a RBL to use through DNS resolution.
+ */
+ case ATK_DNS: {
+ int weight = 0;
+ const char *current = param->value;
+ const char *p = m_strchrnul(param->value, ':');
+ char *next = NULL;
+ for (int i = 0 ; i < 2 ; ++i) {
+ PARSE_CHECK(i == 1 || *p,
+ "host parameter must contains a weight option");
+ switch (i) {
+ case 0:
+ weight = strtol(current, &next, 10);
+ PARSE_CHECK(next == p && weight >= 0 && weight <= 1024,
+ "illegal weight value %.*s",
+ (p - current), current);
+ break;
+
+ case 1:
+ array_add(config->host_offsets, array_len(config->hosts));
+ array_append(config->hosts, current, strlen(current) + 1);
+ array_add(config->host_weights, weight);
+ break;
+ }
+ if (i != 1) {
+ current = p + 1;
+ p = m_strchrnul(current, ':');
+ }
+ }
+ } break;
+