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Use a helper function for selection group cipher for AP mode

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Signed-hostap: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2013-01-13 17:41:40 +02:00
parent 0282a8c46a
commit cf830c1c54
4 changed files with 28 additions and 37 deletions
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21
hostapd/config_file.c
View file

@ -2919,31 +2919,16 @@ static int hostapd_config_fill(struct hostapd_config *conf,
static void hostapd_set_security_params(struct hostapd_bss_config *bss) static void hostapd_set_security_params(struct hostapd_bss_config *bss)
{ {
int pairwise;
if (bss->individual_wep_key_len == 0) { if (bss->individual_wep_key_len == 0) {
/* individual keys are not use; can use key idx0 for /* individual keys are not use; can use key idx0 for
* broadcast keys */ * broadcast keys */
bss->broadcast_key_idx_min = 0; bss->broadcast_key_idx_min = 0;
} }
/* Select group cipher based on the enabled pairwise cipher if ((bss->wpa & 2) && bss->rsn_pairwise == 0)
* suites */
pairwise = 0;
if (bss->wpa & 1)
pairwise |= bss->wpa_pairwise;
if (bss->wpa & 2) {
if (bss->rsn_pairwise == 0)
bss->rsn_pairwise = bss->wpa_pairwise; bss->rsn_pairwise = bss->wpa_pairwise;
pairwise |= bss->rsn_pairwise; bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa, bss->wpa_pairwise,
} bss->rsn_pairwise);
if (pairwise & WPA_CIPHER_TKIP)
bss->wpa_group = WPA_CIPHER_TKIP;
else if ((pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP)) ==
WPA_CIPHER_GCMP)
bss->wpa_group = WPA_CIPHER_GCMP;
else
bss->wpa_group = WPA_CIPHER_CCMP;
bss->radius->auth_server = bss->radius->auth_servers; bss->radius->auth_server = bss->radius->auth_servers;
bss->radius->acct_server = bss->radius->acct_servers; bss->radius->acct_server = bss->radius->acct_servers;

18
src/common/wpa_common.c
View file

@ -1343,3 +1343,21 @@ int wpa_write_ciphers(char *start, char *end, int ciphers, const char *delim)
return pos - start; return pos - start;
} }
int wpa_select_ap_group_cipher(int wpa, int wpa_pairwise, int rsn_pairwise)
{
int pairwise = 0;
/* Select group cipher based on the enabled pairwise cipher suites */
if (wpa & 1)
pairwise |= wpa_pairwise;
if (wpa & 2)
pairwise |= rsn_pairwise;
if (pairwise & WPA_CIPHER_TKIP)
return WPA_CIPHER_TKIP;
if ((pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP)) == WPA_CIPHER_GCMP)
return WPA_CIPHER_GCMP;
return WPA_CIPHER_CCMP;
}

1
src/common/wpa_common.h
View file

@ -400,5 +400,6 @@ int wpa_pick_pairwise_cipher(int ciphers, int none_allowed);
int wpa_pick_group_cipher(int ciphers); int wpa_pick_group_cipher(int ciphers);
int wpa_parse_cipher(const char *value); int wpa_parse_cipher(const char *value);
int wpa_write_ciphers(char *start, char *end, int ciphers, const char *delim); int wpa_write_ciphers(char *start, char *end, int ciphers, const char *delim);
int wpa_select_ap_group_cipher(int wpa, int wpa_pairwise, int rsn_pairwise);
#endif /* WPA_COMMON_H */ #endif /* WPA_COMMON_H */

21
wpa_supplicant/ap.c
View file

@ -46,7 +46,6 @@ static int wpa_supplicant_conf_ap(struct wpa_supplicant *wpa_s,
struct hostapd_config *conf) struct hostapd_config *conf)
{ {
struct hostapd_bss_config *bss = &conf->bss[0]; struct hostapd_bss_config *bss = &conf->bss[0];
int pairwise;
conf->driver = wpa_s->driver; conf->driver = wpa_s->driver;
@ -211,22 +210,10 @@ static int wpa_supplicant_conf_ap(struct wpa_supplicant *wpa_s,
if (ssid->dtim_period) if (ssid->dtim_period)
bss->dtim_period = ssid->dtim_period; bss->dtim_period = ssid->dtim_period;
/* Select group cipher based on the enabled pairwise cipher suites */ if ((bss->wpa & 2) && bss->rsn_pairwise == 0)
pairwise = 0;
if (bss->wpa & 1)
pairwise |= bss->wpa_pairwise;
if (bss->wpa & 2) {
if (bss->rsn_pairwise == 0)
bss->rsn_pairwise = bss->wpa_pairwise; bss->rsn_pairwise = bss->wpa_pairwise;
pairwise |= bss->rsn_pairwise; bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa, bss->wpa_pairwise,
} bss->rsn_pairwise);
if (pairwise & WPA_CIPHER_TKIP)
bss->wpa_group = WPA_CIPHER_TKIP;
else if ((pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP)) ==
WPA_CIPHER_GCMP)
bss->wpa_group = WPA_CIPHER_GCMP;
else
bss->wpa_group = WPA_CIPHER_CCMP;
if (bss->wpa && bss->ieee802_1x) if (bss->wpa && bss->ieee802_1x)
bss->ssid.security_policy = SECURITY_WPA; bss->ssid.security_policy = SECURITY_WPA;
@ -268,7 +255,7 @@ static int wpa_supplicant_conf_ap(struct wpa_supplicant *wpa_s,
goto no_wps; goto no_wps;
#ifdef CONFIG_WPS2 #ifdef CONFIG_WPS2
if (bss->ssid.security_policy == SECURITY_WPA_PSK && if (bss->ssid.security_policy == SECURITY_WPA_PSK &&
(!(pairwise & WPA_CIPHER_CCMP) || !(bss->wpa & 2))) (!(bss->rsn_pairwise & WPA_CIPHER_CCMP) || !(bss->wpa & 2)))
goto no_wps; /* WPS2 does not allow WPA/TKIP-only goto no_wps; /* WPS2 does not allow WPA/TKIP-only
* configuration */ * configuration */
#endif /* CONFIG_WPS2 */ #endif /* CONFIG_WPS2 */