+enum ssid_match_result {
+ NO_SSID_MATCH,
+ EXACT_SSID_MATCH,
+ WILDCARD_SSID_MATCH
+};
+
+static enum ssid_match_result ssid_match(struct hostapd_data *hapd,
+ const u8 *ssid, size_t ssid_len,
+ const u8 *ssid_list,
+ size_t ssid_list_len)
+{
+ const u8 *pos, *end;
+ int wildcard = 0;
+
+ if (ssid_len == 0)
+ wildcard = 1;
+ if (ssid_len == hapd->conf->ssid.ssid_len &&
+ os_memcmp(ssid, hapd->conf->ssid.ssid, ssid_len) == 0)
+ return EXACT_SSID_MATCH;
+
+ if (ssid_list == NULL)
+ return wildcard ? WILDCARD_SSID_MATCH : NO_SSID_MATCH;
+
+ pos = ssid_list;
+ end = ssid_list + ssid_list_len;
+ while (pos + 1 <= end) {
+ if (pos + 2 + pos[1] > end)
+ break;
+ if (pos[1] == 0)
+ wildcard = 1;
+ if (pos[1] == hapd->conf->ssid.ssid_len &&
+ os_memcmp(pos + 2, hapd->conf->ssid.ssid, pos[1]) == 0)
+ return EXACT_SSID_MATCH;
+ pos += 2 + pos[1];
+ }
+
+ return wildcard ? WILDCARD_SSID_MATCH : NO_SSID_MATCH;
+}
+
+