Disconnect hostapd from building in base
[dragonfly.git] / contrib / hostapd / src / eap_server / eap_server_methods.c
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ebfa2275 1/*
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2 * EAP server method registration
3 * Copyright (c) 2004-2009, Jouni Malinen <j@w1.fi>
ebfa2275 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
a875087d 11#include "common.h"
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12#include "eap_i.h"
13#include "eap_methods.h"
14
15
16static struct eap_method *eap_methods;
17
18
19/**
a875087d 20 * eap_server_get_eap_method - Get EAP method based on type number
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21 * @vendor: EAP Vendor-Id (0 = IETF)
22 * @method: EAP type number
23 * Returns: Pointer to EAP method or %NULL if not found
24 */
a875087d 25const struct eap_method * eap_server_get_eap_method(int vendor, EapType method)
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26{
27 struct eap_method *m;
28 for (m = eap_methods; m; m = m->next) {
29 if (m->vendor == vendor && m->method == method)
30 return m;
31 }
32 return NULL;
33}
34
35
36/**
a875087d 37 * eap_server_get_type - Get EAP type for the given EAP method name
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38 * @name: EAP method name, e.g., TLS
39 * @vendor: Buffer for returning EAP Vendor-Id
40 * Returns: EAP method type or %EAP_TYPE_NONE if not found
41 *
42 * This function maps EAP type names into EAP type numbers based on the list of
43 * EAP methods included in the build.
44 */
a875087d 45EapType eap_server_get_type(const char *name, int *vendor)
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46{
47 struct eap_method *m;
48 for (m = eap_methods; m; m = m->next) {
a875087d 49 if (os_strcmp(m->name, name) == 0) {
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50 *vendor = m->vendor;
51 return m->method;
52 }
53 }
54 *vendor = EAP_VENDOR_IETF;
55 return EAP_TYPE_NONE;
56}
57
58
59/**
60 * eap_server_method_alloc - Allocate EAP server method structure
61 * @version: Version of the EAP server method interface (set to
62 * EAP_SERVER_METHOD_INTERFACE_VERSION)
63 * @vendor: EAP Vendor-ID (EAP_VENDOR_*) (0 = IETF)
64 * @method: EAP type number (EAP_TYPE_*)
a875087d 65 * @name: Name of the method (e.g., "TLS")
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66 * Returns: Allocated EAP method structure or %NULL on failure
67 *
68 * The returned structure should be freed with eap_server_method_free() when it
69 * is not needed anymore.
70 */
71struct eap_method * eap_server_method_alloc(int version, int vendor,
72 EapType method, const char *name)
73{
74 struct eap_method *eap;
a875087d 75 eap = os_zalloc(sizeof(*eap));
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76 if (eap == NULL)
77 return NULL;
78 eap->version = version;
79 eap->vendor = vendor;
80 eap->method = method;
81 eap->name = name;
82 return eap;
83}
84
85
86/**
87 * eap_server_method_free - Free EAP server method structure
88 * @method: Method structure allocated with eap_server_method_alloc()
89 */
90void eap_server_method_free(struct eap_method *method)
91{
a875087d 92 os_free(method);
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93}
94
95
96/**
97 * eap_server_method_register - Register an EAP server method
98 * @method: EAP method to register
99 * Returns: 0 on success, -1 on invalid method, or -2 if a matching EAP method
100 * has already been registered
101 *
102 * Each EAP server method needs to call this function to register itself as a
103 * supported EAP method.
104 */
105int eap_server_method_register(struct eap_method *method)
106{
107 struct eap_method *m, *last = NULL;
108
109 if (method == NULL || method->name == NULL ||
110 method->version != EAP_SERVER_METHOD_INTERFACE_VERSION)
111 return -1;
112
113 for (m = eap_methods; m; m = m->next) {
114 if ((m->vendor == method->vendor &&
115 m->method == method->method) ||
a875087d 116 os_strcmp(m->name, method->name) == 0)
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117 return -2;
118 last = m;
119 }
120
121 if (last)
122 last->next = method;
123 else
124 eap_methods = method;
125
126 return 0;
127}
128
129
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130/**
131 * eap_server_unregister_methods - Unregister EAP server methods
132 *
133 * This function is called at program termination to unregister all EAP server
134 * methods.
135 */
136void eap_server_unregister_methods(void)
137{
138 struct eap_method *m;
139
140 while (eap_methods) {
141 m = eap_methods;
142 eap_methods = eap_methods->next;
143
144 if (m->free)
145 m->free(m);
146 else
147 eap_server_method_free(m);
148 }
149}
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150
151
152/**
153 * eap_server_get_name - Get EAP method name for the given EAP type
154 * @vendor: EAP Vendor-Id (0 = IETF)
155 * @type: EAP method type
156 * Returns: EAP method name, e.g., TLS, or %NULL if not found
157 *
158 * This function maps EAP type numbers into EAP type names based on the list of
159 * EAP methods included in the build.
160 */
161const char * eap_server_get_name(int vendor, EapType type)
162{
163 struct eap_method *m;
164 if (vendor == EAP_VENDOR_IETF && type == EAP_TYPE_EXPANDED)
165 return "expanded";
166 for (m = eap_methods; m; m = m->next) {
167 if (m->vendor == vendor && m->method == type)
168 return m->name;
169 }
170 return NULL;
171}