1 /*
2  * hostapd / Test method for vendor specific (expanded) EAP type
3  * Copyright (c) 2005-2007, Jouni Malinen <j@w1.fi>
4  *
5  * This software may be distributed under the terms of the BSD license.
6  * See README for more details.
7  */
8 
9 #include "includes.h"
10 
11 #include "common.h"
12 #include "eap_i.h"
13 
14 
15 #define EAP_VENDOR_ID EAP_VENDOR_HOSTAP
16 #define EAP_VENDOR_TYPE 0xfcfbfaf9
17 
18 
19 struct eap_vendor_test_data {
20 	enum { INIT, CONFIRM, SUCCESS, FAILURE } state;
21 };
22 
23 
eap_vendor_test_state_txt(int state)24 static const char * eap_vendor_test_state_txt(int state)
25 {
26 	switch (state) {
27 	case INIT:
28 		return "INIT";
29 	case CONFIRM:
30 		return "CONFIRM";
31 	case SUCCESS:
32 		return "SUCCESS";
33 	case FAILURE:
34 		return "FAILURE";
35 	default:
36 		return "?";
37 	}
38 }
39 
40 
eap_vendor_test_state(struct eap_vendor_test_data * data,int state)41 static void eap_vendor_test_state(struct eap_vendor_test_data *data,
42 				  int state)
43 {
44 	wpa_printf(MSG_DEBUG, "EAP-VENDOR-TEST: %s -> %s",
45 		   eap_vendor_test_state_txt(data->state),
46 		   eap_vendor_test_state_txt(state));
47 	data->state = state;
48 }
49 
50 
eap_vendor_test_init(struct eap_sm * sm)51 static void * eap_vendor_test_init(struct eap_sm *sm)
52 {
53 	struct eap_vendor_test_data *data;
54 
55 	data = os_zalloc(sizeof(*data));
56 	if (data == NULL)
57 		return NULL;
58 	data->state = INIT;
59 
60 	return data;
61 }
62 
63 
eap_vendor_test_reset(struct eap_sm * sm,void * priv)64 static void eap_vendor_test_reset(struct eap_sm *sm, void *priv)
65 {
66 	struct eap_vendor_test_data *data = priv;
67 	os_free(data);
68 }
69 
70 
eap_vendor_test_buildReq(struct eap_sm * sm,void * priv,u8 id)71 static struct wpabuf * eap_vendor_test_buildReq(struct eap_sm *sm, void *priv,
72 						u8 id)
73 {
74 	struct eap_vendor_test_data *data = priv;
75 	struct wpabuf *req;
76 
77 	req = eap_msg_alloc(EAP_VENDOR_ID, EAP_VENDOR_TYPE, 1,
78 			    EAP_CODE_REQUEST, id);
79 	if (req == NULL) {
80 		wpa_printf(MSG_ERROR, "EAP-VENDOR-TEST: Failed to allocate "
81 			   "memory for request");
82 		return NULL;
83 	}
84 
85 	wpabuf_put_u8(req, data->state == INIT ? 1 : 3);
86 
87 	return req;
88 }
89 
90 
eap_vendor_test_check(struct eap_sm * sm,void * priv,struct wpabuf * respData)91 static bool eap_vendor_test_check(struct eap_sm *sm, void *priv,
92 				  struct wpabuf *respData)
93 {
94 	const u8 *pos;
95 	size_t len;
96 
97 	pos = eap_hdr_validate(EAP_VENDOR_ID, EAP_VENDOR_TYPE, respData, &len);
98 	if (pos == NULL || len < 1) {
99 		wpa_printf(MSG_INFO, "EAP-VENDOR-TEST: Invalid frame");
100 		return true;
101 	}
102 
103 	return false;
104 }
105 
106 
eap_vendor_test_process(struct eap_sm * sm,void * priv,struct wpabuf * respData)107 static void eap_vendor_test_process(struct eap_sm *sm, void *priv,
108 				    struct wpabuf *respData)
109 {
110 	struct eap_vendor_test_data *data = priv;
111 	const u8 *pos;
112 	size_t len;
113 
114 	pos = eap_hdr_validate(EAP_VENDOR_ID, EAP_VENDOR_TYPE, respData, &len);
115 	if (pos == NULL || len < 1)
116 		return;
117 
118 	if (data->state == INIT) {
119 		if (*pos == 2)
120 			eap_vendor_test_state(data, CONFIRM);
121 		else
122 			eap_vendor_test_state(data, FAILURE);
123 	} else if (data->state == CONFIRM) {
124 		if (*pos == 4)
125 			eap_vendor_test_state(data, SUCCESS);
126 		else
127 			eap_vendor_test_state(data, FAILURE);
128 	} else
129 		eap_vendor_test_state(data, FAILURE);
130 }
131 
132 
eap_vendor_test_isDone(struct eap_sm * sm,void * priv)133 static bool eap_vendor_test_isDone(struct eap_sm *sm, void *priv)
134 {
135 	struct eap_vendor_test_data *data = priv;
136 	return data->state == SUCCESS;
137 }
138 
139 
eap_vendor_test_getKey(struct eap_sm * sm,void * priv,size_t * len)140 static u8 * eap_vendor_test_getKey(struct eap_sm *sm, void *priv, size_t *len)
141 {
142 	struct eap_vendor_test_data *data = priv;
143 	u8 *key;
144 	const int key_len = 64;
145 
146 	if (data->state != SUCCESS)
147 		return NULL;
148 
149 	key = os_malloc(key_len);
150 	if (key == NULL)
151 		return NULL;
152 
153 	os_memset(key, 0x11, key_len / 2);
154 	os_memset(key + key_len / 2, 0x22, key_len / 2);
155 	*len = key_len;
156 
157 	return key;
158 }
159 
160 
eap_vendor_test_isSuccess(struct eap_sm * sm,void * priv)161 static bool eap_vendor_test_isSuccess(struct eap_sm *sm, void *priv)
162 {
163 	struct eap_vendor_test_data *data = priv;
164 	return data->state == SUCCESS;
165 }
166 
167 
eap_server_vendor_test_register(void)168 int eap_server_vendor_test_register(void)
169 {
170 	struct eap_method *eap;
171 
172 	eap = eap_server_method_alloc(EAP_SERVER_METHOD_INTERFACE_VERSION,
173 				      EAP_VENDOR_ID, EAP_VENDOR_TYPE,
174 				      "VENDOR-TEST");
175 	if (eap == NULL)
176 		return -1;
177 
178 	eap->init = eap_vendor_test_init;
179 	eap->reset = eap_vendor_test_reset;
180 	eap->buildReq = eap_vendor_test_buildReq;
181 	eap->check = eap_vendor_test_check;
182 	eap->process = eap_vendor_test_process;
183 	eap->isDone = eap_vendor_test_isDone;
184 	eap->getKey = eap_vendor_test_getKey;
185 	eap->isSuccess = eap_vendor_test_isSuccess;
186 
187 	return eap_server_method_register(eap);
188 }
189