667f1e322afe385e60976e0927f546b90229b442
[strongswan.git] / src / libcharon / plugins / tnc_imv / tnc_imv_manager.c
1 /*
2 * Copyright (C) 2006 Mike McCauley
3 * Copyright (C) 2010 Andreas Steffen, HSR Hochschule fuer Technik Rapperswil
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * for more details.
14 */
15
16 #include "tnc_imv_manager.h"
17
18 #include <tnc/imv/imv_manager.h>
19 #include <tnc/tncifimv.h>
20
21 #include <debug.h>
22 #include <library.h>
23 #include <utils/linked_list.h>
24
25 typedef struct private_tnc_imv_manager_t private_tnc_imv_manager_t;
26
27 /**
28 * Private data of an imv_manager_t object.
29 */
30 struct private_tnc_imv_manager_t {
31
32 /**
33 * Public members of imv_manager_t.
34 */
35 imv_manager_t public;
36
37 /**
38 * Linked list of IMVs
39 */
40 linked_list_t *imvs;
41
42 /**
43 * Next IMV ID to be assigned
44 */
45 TNC_IMVID next_imv_id;
46 };
47
48 METHOD(imv_manager_t, add, bool,
49 private_tnc_imv_manager_t *this, imv_t *imv)
50 {
51 TNC_Version version;
52
53 /* Initialize the IMV module */
54 imv->set_id(imv, this->next_imv_id);
55 if (imv->initialize(imv->get_id(imv), TNC_IFIMV_VERSION_1,
56 TNC_IFIMV_VERSION_1, &version) != TNC_RESULT_SUCCESS)
57 {
58 DBG1(DBG_TNC, "could not initialize IMV '%s'",
59 imv->get_name(imv));
60 return FALSE;
61 }
62 this->imvs->insert_last(this->imvs, imv);
63 this->next_imv_id++;
64
65 if (imv->provide_bind_function(imv->get_id(imv), TNC_TNCS_BindFunction)
66 != TNC_RESULT_SUCCESS)
67 {
68 DBG1(DBG_TNC, "could not provide bind function for IMV '%s'",
69 imv->get_name(imv));
70 this->imvs->remove_last(this->imvs, (void**)&imv);
71 return FALSE;
72 }
73 return TRUE;
74 }
75
76 METHOD(imv_manager_t, remove_, imv_t*,
77 private_tnc_imv_manager_t *this, TNC_IMVID id)
78 {
79 enumerator_t *enumerator;
80 imv_t *imv;
81
82 enumerator = this->imvs->create_enumerator(this->imvs);
83 while (enumerator->enumerate(enumerator, &imv))
84 {
85 if (id == imv->get_id(imv))
86 {
87 this->imvs->remove_at(this->imvs, enumerator);
88 return imv;
89 }
90 }
91 enumerator->destroy(enumerator);
92 }
93
94 METHOD(imv_manager_t, notify_connection_change, void,
95 private_tnc_imv_manager_t *this, TNC_ConnectionID id,
96 TNC_ConnectionState state)
97 {
98 enumerator_t *enumerator;
99 imv_t *imv;
100
101 enumerator = this->imvs->create_enumerator(this->imvs);
102 while (enumerator->enumerate(enumerator, &imv))
103 {
104 if (imv->notify_connection_change)
105 {
106 imv->notify_connection_change(imv->get_id(imv), id, state);
107 }
108 }
109 enumerator->destroy(enumerator);
110 }
111
112 METHOD(imv_manager_t, set_message_types, TNC_Result,
113 private_tnc_imv_manager_t *this, TNC_IMVID id,
114 TNC_MessageTypeList supported_types,
115 TNC_UInt32 type_count)
116 {
117 enumerator_t *enumerator;
118 imv_t *imv;
119 TNC_Result result = TNC_RESULT_FATAL;
120
121 enumerator = this->imvs->create_enumerator(this->imvs);
122 while (enumerator->enumerate(enumerator, &imv))
123 {
124 if (id == imv->get_id(imv))
125 {
126 imv->set_message_types(imv, supported_types, type_count);
127 result = TNC_RESULT_SUCCESS;
128 break;
129 }
130 }
131 enumerator->destroy(enumerator);
132 return result;
133 }
134
135 METHOD(imv_manager_t, receive_message, void,
136 private_tnc_imv_manager_t *this, TNC_ConnectionID connection_id,
137 TNC_BufferReference message,
138 TNC_UInt32 message_len,
139 TNC_MessageType message_type)
140 {
141 enumerator_t *enumerator;
142 imv_t *imv;
143
144 enumerator = this->imvs->create_enumerator(this->imvs);
145 while (enumerator->enumerate(enumerator, &imv))
146 {
147 if (imv->receive_message && imv->type_supported(imv, message_type))
148 {
149 imv->receive_message(imv->get_id(imv), connection_id,
150 message, message_len, message_type);
151 }
152 }
153 enumerator->destroy(enumerator);
154 }
155
156 METHOD(imv_manager_t, destroy, void,
157 private_tnc_imv_manager_t *this)
158 {
159 imv_t *imv;
160
161 while (this->imvs->remove_last(this->imvs, (void**)&imv) == SUCCESS)
162 {
163 if (imv->terminate &&
164 imv->terminate(imv->get_id(imv)) != TNC_RESULT_SUCCESS)
165 {
166 DBG1(DBG_TNC, "IMV '%s' not terminated successfully",
167 imv->get_name(imv));
168 }
169 imv->destroy(imv);
170 }
171 this->imvs->destroy(this->imvs);
172 free(this);
173 }
174
175 /**
176 * Described in header.
177 */
178 imv_manager_t* tnc_imv_manager_create(void)
179 {
180 private_tnc_imv_manager_t *this;
181
182 INIT(this,
183 .public = {
184 .add = _add,
185 .remove = _remove_, /* avoid name conflict with stdio.h */
186 .notify_connection_change = _notify_connection_change,
187 .set_message_types = _set_message_types,
188 .receive_message = _receive_message,
189 .destroy = _destroy,
190 },
191 .imvs = linked_list_create(),
192 .next_imv_id = 1,
193 );
194
195
196 return &this->public;
197 }
198
199