fix hostapd/madwifi crash (#247)

git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@3102 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/hostapd/patches/100-wpa_fix.patch

+--- hostapd-0.4.7/driver_madwifi.c	2006-01-30 10:00:44.199096000 -0800
++++ hostapd-0.4.7-new/driver_madwifi.c	2006-01-30 10:05:55.925511000 -0800
+@@ -692,6 +692,7 @@
+ 	struct hostapd_data *hapd = drv->hapd;
+ 	struct ieee80211req_wpaie ie;
+ 	int ielen, res;
++        int rsn = 0;
+ 
+ 	/*
+ 	 * Fetch negotiated WPA/RSN parameters from the system.
+@@ -702,26 +703,37 @@
+ 		printf("Failed to get WPA/RSN information element.\n");
+ 		return -1;		/* XXX not right */
+ 	}
+-	ielen = ie.wpa_ie[1];
+-	if (ielen == 0) {
++        if ((ie.wpa_ie[1] == 0) && (ie.rsn_ie[1] == 0)){
+ 		printf("No WPA/RSN information element for station!?\n");
+ 		return -1;		/* XXX not right */
+ 	}
++        ielen = ie.rsn_ie[1]; 
+ 	ielen += 2;
+-	res = wpa_validate_wpa_ie(hapd, sta, ie.wpa_ie, ielen,
+-			ie.wpa_ie[0] == WLAN_EID_RSN ?
+-			    HOSTAPD_WPA_VERSION_WPA2 : HOSTAPD_WPA_VERSION_WPA);
+-	if (res != WPA_IE_OK) {
+-		printf("WPA/RSN information element rejected? (res %u)\n", res);
+-		return -1;
+-	}
++	res = wpa_validate_wpa_ie(hapd, sta, ie.rsn_ie, ielen, 
++                                  HOSTAPD_WPA_VERSION_WPA2);
++        if (res != WPA_IE_OK){
++          // now look for WPA IE
++          ielen = ie.wpa_ie[1];
++          ielen += 2;
++          res = wpa_validate_wpa_ie(hapd, sta, ie.wpa_ie, ielen, 
++                                    HOSTAPD_WPA_VERSION_WPA);
++          if (res != WPA_IE_OK) {
++            printf("WPA/RSN information element rejected? (res %u)\n", res);
++            return -1;
++          }
++        } else {
++          rsn = 1;
++        }
+ 	free(sta->wpa_ie);
+ 	sta->wpa_ie = malloc(ielen);
+ 	if (sta->wpa_ie == NULL) {
+ 		printf("No memory to save WPA/RSN information element!\n");
+ 		return -1;
+ 	}
+-	memcpy(sta->wpa_ie, ie.wpa_ie, ielen);
++        if (rsn)
++          memcpy(sta->wpa_ie, ie.rsn_ie, ielen);
++        else
++          memcpy(sta->wpa_ie, ie.wpa_ie, ielen);
+ 	sta->wpa_ie_len = ielen;
+ 	return 0;
+ }

target/linux/package/madwifi/patches/103-wpa_crash.patch

+diff -urN madwifi.old/net80211/ieee80211_ioctl.h madwifi.dev/net80211/ieee80211_ioctl.h
+--- madwifi.old/net80211/ieee80211_ioctl.h	2005-12-07 03:53:07.000000000 +0100
++++ madwifi.dev/net80211/ieee80211_ioctl.h	2006-01-31 22:33:21.282491500 +0100
+@@ -277,6 +277,7 @@
+ struct ieee80211req_wpaie {
+ 	u_int8_t	wpa_macaddr[IEEE80211_ADDR_LEN];
+ 	u_int8_t	wpa_ie[IEEE80211_MAX_OPT_IE];
++	u_int8_t	rsn_ie[IEEE80211_MAX_OPT_IE];
+ };
+ 
+ /*
+diff -urN madwifi.old/net80211/ieee80211_wireless.c madwifi.dev/net80211/ieee80211_wireless.c
+--- madwifi.old/net80211/ieee80211_wireless.c	2006-01-23 08:07:51.000000000 +0100
++++ madwifi.dev/net80211/ieee80211_wireless.c	2006-01-31 22:33:21.286491750 +0100
+@@ -3160,6 +3160,12 @@
+ 			ielen = sizeof(wpaie.wpa_ie);
+ 		memcpy(wpaie.wpa_ie, ni->ni_wpa_ie, ielen);
+ 	}
++	if (ni->ni_rsn_ie != NULL) {
++		int ielen = ni->ni_rsn_ie[1] + 2;
++		if (ielen > sizeof(wpaie.rsn_ie))
++			ielen = sizeof(wpaie.rsn_ie);
++		memcpy(wpaie.rsn_ie, ni->ni_rsn_ie, ielen);
++	}
+ 	ieee80211_free_node(ni);
+ 	return (copy_to_user(iwr->u.data.pointer, &wpaie, sizeof(wpaie)) ?
+ 			-EFAULT : 0);