PASN: Move responder functionality into a separate file

PASN responder validates auth 1 frame and sends auth 2 frame to the
initiator. It analyses the auth 3 frame and verifies successful
authentication. Wi-Fi Aware modules can reuse this functionality through
a shared library libpasn.so generated from this code. Move the PASN
functionality that is now decoupled from the hapd context into a
separate file in a common directory to make it easier to build such a
library.

Signed-off-by: Jouni Malinen <quic_jouni@quicinc.com>

hostapd/Android.mk

@@ -1037,6 +1037,7 @@ ifdef NEED_AP_MLME
 OBJS += src/ap/wmm.c
 OBJS += src/ap/ap_list.c
 OBJS += src/ap/comeback_token.c
+OBJS += src/pasn/pasn_responder.c
 OBJS += src/ap/ieee802_11.c
 OBJS += src/ap/hw_features.c
 OBJS += src/ap/dfs.c

hostapd/Makefile

@@ -1183,6 +1183,7 @@ ifdef NEED_AP_MLME
 OBJS += ../src/ap/wmm.o
 OBJS += ../src/ap/ap_list.o
 OBJS += ../src/ap/comeback_token.o
+OBJS += ../src/pasn/pasn_responder.o
 OBJS += ../src/ap/ieee802_11.o
 OBJS += ../src/ap/hw_features.o
 OBJS += ../src/ap/dfs.o

src/pasn/Makefile

@@ -10,6 +10,7 @@ CFLAGS += -DCONFIG_SHA512
 CFLAGS += -DCONFIG_PASN
 
 LIB_OBJS= \
-	pasn_initiator.o
+	pasn_initiator.o \
+	pasn_responder.o
 
 include ../lib.rules

src/pasn/pasn_common.h

@@ -150,6 +150,17 @@ int wpa_pasn_auth_rx(struct wpas_pasn *pasn, const u8 *data, size_t len,
 int wpa_pasn_auth_tx_status(struct wpas_pasn *pasn,
 			    const u8 *data, size_t data_len, u8 acked);
 
+/* Responder */
+int handle_auth_pasn_1(struct wpas_pasn *pasn,
+		       const u8 *own_addr, const u8 *peer_addr,
+		       const struct ieee80211_mgmt *mgmt, size_t len);
+int handle_auth_pasn_3(struct wpas_pasn *pasn, const u8 *own_addr,
+		       const u8 *peer_addr,
+		       const struct ieee80211_mgmt *mgmt, size_t len);
+int handle_auth_pasn_resp(struct wpas_pasn *pasn, const u8 *own_addr,
+			  const u8 *peer_addr,
+			  struct rsn_pmksa_cache_entry *pmksa, u16 status);
+
 #endif /* CONFIG_PASN */
 
 #ifdef __cplusplus

wpa_supplicant/Android.mk

@@ -950,6 +950,7 @@ ifdef NEED_AP_MLME
 OBJS += src/ap/wmm.c
 OBJS += src/ap/ap_list.c
 OBJS += src/ap/comeback_token.c
+OBJS += src/pasn/pasn_responder.c
 OBJS += src/ap/ieee802_11.c
 OBJS += src/ap/hw_features.c
 OBJS += src/ap/dfs.c

wpa_supplicant/Makefile

@@ -985,6 +985,7 @@ ifdef NEED_AP_MLME
 OBJS += ../src/ap/wmm.o
 OBJS += ../src/ap/ap_list.o
 OBJS += ../src/ap/comeback_token.o
+OBJS += ../src/pasn/pasn_responder.o
 OBJS += ../src/ap/ieee802_11.o
 OBJS += ../src/ap/hw_features.o
 OBJS += ../src/ap/dfs.o