Disconnect hostapd from building in base
[dragonfly.git] / contrib / hostapd / src / eap_server / eap_server_identity.c
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1/*
2 * hostapd / EAP-Identity
3 * Copyright (c) 2004-2006, Jouni Malinen <j@w1.fi>
4 *
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5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
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7 */
8
9#include "includes.h"
10
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11#include "common.h"
12#include "eap_i.h"
13
14
15struct eap_identity_data {
16 enum { CONTINUE, SUCCESS, FAILURE } state;
17 int pick_up;
18};
19
20
21static void * eap_identity_init(struct eap_sm *sm)
22{
23 struct eap_identity_data *data;
24
a875087d 25 data = os_zalloc(sizeof(*data));
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26 if (data == NULL)
27 return NULL;
28 data->state = CONTINUE;
29
30 return data;
31}
32
33
34static void * eap_identity_initPickUp(struct eap_sm *sm)
35{
36 struct eap_identity_data *data;
37 data = eap_identity_init(sm);
38 if (data) {
39 data->pick_up = 1;
40 }
41 return data;
42}
43
44
45static void eap_identity_reset(struct eap_sm *sm, void *priv)
46{
47 struct eap_identity_data *data = priv;
a875087d 48 os_free(data);
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49}
50
51
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52static struct wpabuf * eap_identity_buildReq(struct eap_sm *sm, void *priv,
53 u8 id)
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54{
55 struct eap_identity_data *data = priv;
a875087d 56 struct wpabuf *req;
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57 const char *req_data;
58 size_t req_data_len;
59
60 if (sm->eapol_cb->get_eap_req_id_text) {
61 req_data = sm->eapol_cb->get_eap_req_id_text(sm->eapol_ctx,
62 &req_data_len);
63 } else {
64 req_data = NULL;
65 req_data_len = 0;
66 }
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67 req = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_IDENTITY, req_data_len,
68 EAP_CODE_REQUEST, id);
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69 if (req == NULL) {
70 wpa_printf(MSG_ERROR, "EAP-Identity: Failed to allocate "
71 "memory for request");
72 data->state = FAILURE;
73 return NULL;
74 }
75
a875087d 76 wpabuf_put_data(req, req_data, req_data_len);
ebfa2275 77
a875087d 78 return req;
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79}
80
81
82static Boolean eap_identity_check(struct eap_sm *sm, void *priv,
a875087d 83 struct wpabuf *respData)
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84{
85 const u8 *pos;
86 size_t len;
87
88 pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_IDENTITY,
a875087d 89 respData, &len);
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90 if (pos == NULL) {
91 wpa_printf(MSG_INFO, "EAP-Identity: Invalid frame");
92 return TRUE;
93 }
94
95 return FALSE;
96}
97
98
99static void eap_identity_process(struct eap_sm *sm, void *priv,
a875087d 100 struct wpabuf *respData)
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101{
102 struct eap_identity_data *data = priv;
103 const u8 *pos;
104 size_t len;
105
106 if (data->pick_up) {
a875087d 107 if (eap_identity_check(sm, data, respData)) {
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108 wpa_printf(MSG_DEBUG, "EAP-Identity: failed to pick "
109 "up already started negotiation");
110 data->state = FAILURE;
111 return;
112 }
113 data->pick_up = 0;
114 }
115
116 pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_IDENTITY,
a875087d 117 respData, &len);
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118 if (pos == NULL)
119 return; /* Should not happen - frame already validated */
120
121 wpa_hexdump_ascii(MSG_DEBUG, "EAP-Identity: Peer identity", pos, len);
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122 if (sm->identity)
123 sm->update_user = TRUE;
124 os_free(sm->identity);
125 sm->identity = os_malloc(len ? len : 1);
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126 if (sm->identity == NULL) {
127 data->state = FAILURE;
128 } else {
a875087d 129 os_memcpy(sm->identity, pos, len);
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130 sm->identity_len = len;
131 data->state = SUCCESS;
132 }
133}
134
135
136static Boolean eap_identity_isDone(struct eap_sm *sm, void *priv)
137{
138 struct eap_identity_data *data = priv;
139 return data->state != CONTINUE;
140}
141
142
143static Boolean eap_identity_isSuccess(struct eap_sm *sm, void *priv)
144{
145 struct eap_identity_data *data = priv;
146 return data->state == SUCCESS;
147}
148
149
150int eap_server_identity_register(void)
151{
152 struct eap_method *eap;
153 int ret;
154
155 eap = eap_server_method_alloc(EAP_SERVER_METHOD_INTERFACE_VERSION,
156 EAP_VENDOR_IETF, EAP_TYPE_IDENTITY,
157 "Identity");
158 if (eap == NULL)
159 return -1;
160
161 eap->init = eap_identity_init;
162 eap->initPickUp = eap_identity_initPickUp;
163 eap->reset = eap_identity_reset;
164 eap->buildReq = eap_identity_buildReq;
165 eap->check = eap_identity_check;
166 eap->process = eap_identity_process;
167 eap->isDone = eap_identity_isDone;
168 eap->isSuccess = eap_identity_isSuccess;
169
170 ret = eap_server_method_register(eap);
171 if (ret)
172 eap_server_method_free(eap);
173 return ret;
174}