From 3722c0f4aae47663e1f3bd81cd78d4653c4db5f8 Mon Sep 17 00:00:00 2001
From: Jouni Malinen <j@w1.fi>
Date: Sun, 12 Jul 2015 11:31:28 +0300
Subject: [PATCH] Add EAPOL_SET hostapd command to configure EAPOL parameters

This new control interface command "EAPOL_REAUTH <MAC address>
<parameter> <value>" can be used to implement the IEEE 802.1X PAE
Set Authenticator Configuration operation.

Signed-off-by: Jouni Malinen <j@w1.fi>
---
 hostapd/ctrl_iface.c           | 26 ++++++++++++
 src/eapol_auth/eapol_auth_sm.c | 72 ++++++++++++++++++++++++++++++++++
 src/eapol_auth/eapol_auth_sm.h |  2 +
 3 files changed, 100 insertions(+)

diff --git a/hostapd/ctrl_iface.c b/hostapd/ctrl_iface.c
index 0533c3ed9..16add37ea 100644
--- a/hostapd/ctrl_iface.c
+++ b/hostapd/ctrl_iface.c
@@ -1905,6 +1905,29 @@ static int hostapd_ctrl_iface_eapol_reauth(struct hostapd_data *hapd,
 }
 
 
+static int hostapd_ctrl_iface_eapol_set(struct hostapd_data *hapd, char *cmd)
+{
+	u8 addr[ETH_ALEN];
+	struct sta_info *sta;
+	char *pos = cmd, *param;
+
+	if (hwaddr_aton(pos, addr) || pos[17] != ' ')
+		return -1;
+	pos += 18;
+	param = pos;
+	pos = os_strchr(pos, ' ');
+	if (!pos)
+		return -1;
+	*pos++ = '\0';
+
+	sta = ap_get_sta(hapd, addr);
+	if (!sta || !sta->eapol_sm)
+		return -1;
+
+	return eapol_auth_set_conf(sta->eapol_sm, param, pos);
+}
+
+
 static void hostapd_ctrl_iface_receive(int sock, void *eloop_ctx,
 				       void *sock_ctx)
 {
@@ -2157,6 +2180,9 @@ static void hostapd_ctrl_iface_receive(int sock, void *eloop_ctx,
 	} else if (os_strncmp(buf, "EAPOL_REAUTH ", 13) == 0) {
 		if (hostapd_ctrl_iface_eapol_reauth(hapd, buf + 13))
 			reply_len = -1;
+	} else if (os_strncmp(buf, "EAPOL_SET ", 10) == 0) {
+		if (hostapd_ctrl_iface_eapol_set(hapd, buf + 10))
+			reply_len = -1;
 	} else {
 		os_memcpy(reply, "UNKNOWN COMMAND\n", 16);
 		reply_len = 16;
diff --git a/src/eapol_auth/eapol_auth_sm.c b/src/eapol_auth/eapol_auth_sm.c
index aed89ecab..cbd528708 100644
--- a/src/eapol_auth/eapol_auth_sm.c
+++ b/src/eapol_auth/eapol_auth_sm.c
@@ -1089,6 +1089,78 @@ void eapol_auth_reauthenticate(struct eapol_state_machine *sm)
 }
 
 
+int eapol_auth_set_conf(struct eapol_state_machine *sm, const char *param,
+			const char *value)
+{
+	wpa_printf(MSG_DEBUG, "EAPOL: External configuration operation for "
+		   MACSTR " - param=%s value=%s",
+		   MAC2STR(sm->addr), param, value);
+
+	if (os_strcasecmp(param, "AdminControlledDirections") == 0) {
+		if (os_strcmp(value, "Both") == 0)
+			sm->adminControlledDirections = Both;
+		else if (os_strcmp(value, "In") == 0)
+			sm->adminControlledDirections = In;
+		else
+			return -1;
+		eapol_auth_step(sm);
+		return 0;
+	}
+
+	if (os_strcasecmp(param, "AdminControlledPortControl") == 0) {
+		if (os_strcmp(value, "ForceAuthorized") == 0)
+			sm->portControl = ForceAuthorized;
+		else if (os_strcmp(value, "ForceUnauthorized") == 0)
+			sm->portControl = ForceUnauthorized;
+		else if (os_strcmp(value, "Auto") == 0)
+			sm->portControl = Auto;
+		else
+			return -1;
+		eapol_auth_step(sm);
+		return 0;
+	}
+
+	if (os_strcasecmp(param, "quietPeriod") == 0) {
+		sm->quietPeriod = atoi(value);
+		return 0;
+	}
+
+	if (os_strcasecmp(param, "serverTimeout") == 0) {
+		sm->serverTimeout = atoi(value);
+		return 0;
+	}
+
+	if (os_strcasecmp(param, "reAuthPeriod") == 0) {
+		sm->reAuthPeriod = atoi(value);
+		return 0;
+	}
+
+	if (os_strcasecmp(param, "reAuthEnabled") == 0) {
+		if (os_strcmp(value, "TRUE") == 0)
+			sm->reAuthEnabled = TRUE;
+		else if (os_strcmp(value, "FALSE") == 0)
+			sm->reAuthEnabled = FALSE;
+		else
+			return -1;
+		eapol_auth_step(sm);
+		return 0;
+	}
+
+	if (os_strcasecmp(param, "KeyTransmissionEnabled") == 0) {
+		if (os_strcmp(value, "TRUE") == 0)
+			sm->keyTxEnabled = TRUE;
+		else if (os_strcmp(value, "FALSE") == 0)
+			sm->keyTxEnabled = FALSE;
+		else
+			return -1;
+		eapol_auth_step(sm);
+		return 0;
+	}
+
+	return -1;
+}
+
+
 static int eapol_auth_conf_clone(struct eapol_auth_config *dst,
 				 struct eapol_auth_config *src)
 {
diff --git a/src/eapol_auth/eapol_auth_sm.h b/src/eapol_auth/eapol_auth_sm.h
index bea784d34..1e0d3cce8 100644
--- a/src/eapol_auth/eapol_auth_sm.h
+++ b/src/eapol_auth/eapol_auth_sm.h
@@ -95,5 +95,7 @@ int eapol_auth_dump_state(struct eapol_state_machine *sm, char *buf,
 			  size_t buflen);
 int eapol_auth_eap_pending_cb(struct eapol_state_machine *sm, void *ctx);
 void eapol_auth_reauthenticate(struct eapol_state_machine *sm);
+int eapol_auth_set_conf(struct eapol_state_machine *sm, const char *param,
+			const char *value);
 
 #endif /* EAPOL_AUTH_SM_H */