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WPS: Fix an interoperability issue with mixed mode and AP Settings

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It looks like Windows 7 WPS implementation does not like multiple
Authentication/Encryption Type bits to be set in M7 AP Settings
attributes, i.e., it refused to add a network profile if the AP
was configured for WPA/WPA2 mixed mode and AP PIN was used to
enroll the network.

Leave only a single bit set in the Authentication/Encryption Type
attributes in M7 when the AP is acting as an Enrollee to avoid this
issue.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2012-01-27 22:32:15 +02:00 committed by Jouni Malinen
parent b21ff9cb20
commit ce7b56afab
1 changed files with 31 additions and 4 deletions
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35
src/wps/wps_enrollee.c
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@ -257,20 +257,47 @@ static int wps_build_cred_ssid(struct wps_data *wps, struct wpabuf *msg)
static int wps_build_cred_auth_type(struct wps_data *wps, struct wpabuf *msg)
{
wpa_printf(MSG_DEBUG, "WPS: * Authentication Type");
u16 auth_type = wps->wps->auth_types;
/* Select the best authentication type */
if (auth_type & WPS_AUTH_WPA2PSK)
auth_type = WPS_AUTH_WPA2PSK;
else if (auth_type & WPS_AUTH_WPAPSK)
auth_type = WPS_AUTH_WPAPSK;
else if (auth_type & WPS_AUTH_OPEN)
auth_type = WPS_AUTH_OPEN;
else if (auth_type & WPS_AUTH_SHARED)
auth_type = WPS_AUTH_SHARED;
wpa_printf(MSG_DEBUG, "WPS: * Authentication Type (0x%x)", auth_type);
wpabuf_put_be16(msg, ATTR_AUTH_TYPE);
wpabuf_put_be16(msg, 2);
wpabuf_put_be16(msg, wps->wps->auth_types);
wpabuf_put_be16(msg, auth_type);
return 0;
}
static int wps_build_cred_encr_type(struct wps_data *wps, struct wpabuf *msg)
{
wpa_printf(MSG_DEBUG, "WPS: * Encryption Type");
u16 encr_type = wps->wps->encr_types;
/* Select the best encryption type */
if (wps->wps->auth_types & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK)) {
if (encr_type & WPS_ENCR_AES)
encr_type = WPS_ENCR_AES;
else if (encr_type & WPS_ENCR_TKIP)
encr_type = WPS_ENCR_TKIP;
} else {
if (encr_type & WPS_ENCR_WEP)
encr_type = WPS_ENCR_WEP;
else if (encr_type & WPS_ENCR_NONE)
encr_type = WPS_ENCR_NONE;
}
wpa_printf(MSG_DEBUG, "WPS: * Encryption Type (0x%x)", encr_type);
wpabuf_put_be16(msg, ATTR_ENCR_TYPE);
wpabuf_put_be16(msg, 2);
wpabuf_put_be16(msg, wps->wps->encr_types);
wpabuf_put_be16(msg, encr_type);
return 0;
}