1 files changed, 113 insertions, 0 deletions
diff --git a/contrib/wpa_supplicant/eap_otp.c b/contrib/wpa_supplicant/eap_otp.c
new file mode 100644
index 000000000000..e50de636accd
--- /dev/null
+++ b/contrib/wpa_supplicant/eap_otp.c
@@ -0,0 +1,113 @@
+/*
+ * WPA Supplicant / EAP-OTP (RFC 3748)
+ * Copyright (c) 2004-2005, Jouni Malinen <jkmaline@cc.hut.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Alternatively, this software may be distributed under the terms of BSD
+ * license.
+ *
+ * See README and COPYING for more details.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "common.h"
+#include "eap_i.h"
+#include "wpa_supplicant.h"
+#include "config_ssid.h"
+
+
+static void * eap_otp_init(struct eap_sm *sm)
+{
+	return (void *) 1;
+}
+
+
+static void eap_otp_deinit(struct eap_sm *sm, void *priv)
+{
+}
+
+
+static u8 * eap_otp_process(struct eap_sm *sm, void *priv,
+			    struct eap_method_ret *ret,
+			    u8 *reqData, size_t reqDataLen,
+			    size_t *respDataLen)
+{
+	struct wpa_ssid *config = eap_get_config(sm);
+	struct eap_hdr *req, *resp;
+	u8 *pos, *password;
+	size_t password_len, len;
+
+	req = (struct eap_hdr *) reqData;
+	pos = (u8 *) (req + 1);
+	if (reqDataLen < sizeof(*req) + 1 || *pos != EAP_TYPE_OTP ||
+	    (len = be_to_host16(req->length)) > reqDataLen) {
+		wpa_printf(MSG_INFO, "EAP-OTP: Invalid frame");
+		ret->ignore = TRUE;
+		return NULL;
+	}
+	pos++;
+	wpa_hexdump_ascii(MSG_MSGDUMP, "EAP-OTP: Request message",
+			  pos, len - sizeof(*req) - 1);
+
+	if (config == NULL ||
+	    (config->password == NULL && config->otp == NULL)) {
+		wpa_printf(MSG_INFO, "EAP-OTP: Password not configured");
+		eap_sm_request_otp(sm, config, (char *) pos,
+				   len - sizeof(*req) - 1);
+		ret->ignore = TRUE;
+		return NULL;
+	}
+
+	if (config->otp) {
+		password = config->otp;
+		password_len = config->otp_len;
+	} else {
+		password = config->password;
+		password_len = config->password_len;
+	}
+
+	ret->ignore = FALSE;
+
+	ret->methodState = METHOD_DONE;
+	ret->decision = DECISION_COND_SUCC;
+	ret->allowNotifications = FALSE;
+
+	*respDataLen = sizeof(struct eap_hdr) + 1 + password_len;
+	resp = malloc(*respDataLen);
+	if (resp == NULL)
+		return NULL;
+	resp->code = EAP_CODE_RESPONSE;
+	resp->identifier = req->identifier;
+	resp->length = host_to_be16(*respDataLen);
+	pos = (u8 *) (resp + 1);
+	*pos++ = EAP_TYPE_OTP;
+	memcpy(pos, password, password_len);
+	wpa_hexdump_ascii_key(MSG_MSGDUMP, "EAP-OTP: Response",
+			      password, password_len);
+
+	if (config->otp) {
+		wpa_printf(MSG_DEBUG, "EAP-OTP: Forgetting used password");
+		memset(config->otp, 0, config->otp_len);
+		free(config->otp);
+		config->otp = NULL;
+		config->otp_len = 0;
+	}
+
+	return (u8 *) resp;
+}
+
+
+const struct eap_method eap_method_otp =
+{
+	.method = EAP_TYPE_OTP,
+	.name = "OTP",
+	.init = eap_otp_init,
+	.deinit = eap_otp_deinit,
+	.process = eap_otp_process,
+};