2b00020020499bbe2101c6dee624fbc3d3353f83
[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
74 return TRUE;
75 }
76
77 METHOD(imv_manager_t, remove_, imv_t*,
78 private_tnc_imv_manager_t *this, TNC_IMVID id)
79 {
80 enumerator_t *enumerator;
81 imv_t *imv;
82
83 enumerator = this->imvs->create_enumerator(this->imvs);
84 while (enumerator->enumerate(enumerator, &imv))
85 {
86 if (id == imv->get_id(imv))
87 {
88 this->imvs->remove_at(this->imvs, enumerator);
89 return imv;
90 }
91 }
92 enumerator->destroy(enumerator);
93 return NULL;
94 }
95
96 METHOD(imv_manager_t, notify_connection_change, void,
97 private_tnc_imv_manager_t *this, TNC_ConnectionID id,
98 TNC_ConnectionState state)
99 {
100 enumerator_t *enumerator;
101 imv_t *imv;
102
103 enumerator = this->imvs->create_enumerator(this->imvs);
104 while (enumerator->enumerate(enumerator, &imv))
105 {
106 if (imv->notify_connection_change)
107 {
108 imv->notify_connection_change(imv->get_id(imv), id, state);
109 }
110 }
111 enumerator->destroy(enumerator);
112 }
113
114 METHOD(imv_manager_t, set_message_types, TNC_Result,
115 private_tnc_imv_manager_t *this, TNC_IMVID id,
116 TNC_MessageTypeList supported_types,
117 TNC_UInt32 type_count)
118 {
119 enumerator_t *enumerator;
120 imv_t *imv;
121 TNC_Result result = TNC_RESULT_FATAL;
122
123 enumerator = this->imvs->create_enumerator(this->imvs);
124 while (enumerator->enumerate(enumerator, &imv))
125 {
126 if (id == imv->get_id(imv))
127 {
128 imv->set_message_types(imv, supported_types, type_count);
129 result = TNC_RESULT_SUCCESS;
130 break;
131 }
132 }
133 enumerator->destroy(enumerator);
134 return result;
135 }
136
137 METHOD(imv_manager_t, receive_message, void,
138 private_tnc_imv_manager_t *this, TNC_ConnectionID connection_id,
139 TNC_BufferReference message,
140 TNC_UInt32 message_len,
141 TNC_MessageType message_type)
142 {
143 enumerator_t *enumerator;
144 imv_t *imv;
145
146 enumerator = this->imvs->create_enumerator(this->imvs);
147 while (enumerator->enumerate(enumerator, &imv))
148 {
149 if (imv->receive_message && imv->type_supported(imv, message_type))
150 {
151 imv->receive_message(imv->get_id(imv), connection_id,
152 message, message_len, message_type);
153 }
154 }
155 enumerator->destroy(enumerator);
156 }
157
158 METHOD(imv_manager_t, destroy, void,
159 private_tnc_imv_manager_t *this)
160 {
161 imv_t *imv;
162
163 while (this->imvs->remove_last(this->imvs, (void**)&imv) == SUCCESS)
164 {
165 if (imv->terminate &&
166 imv->terminate(imv->get_id(imv)) != TNC_RESULT_SUCCESS)
167 {
168 DBG1(DBG_TNC, "IMV '%s' not terminated successfully",
169 imv->get_name(imv));
170 }
171 imv->destroy(imv);
172 }
173 this->imvs->destroy(this->imvs);
174 free(this);
175 }
176
177 /**
178 * Described in header.
179 */
180 imv_manager_t* tnc_imv_manager_create(void)
181 {
182 private_tnc_imv_manager_t *this;
183
184 INIT(this,
185 .public = {
186 .add = _add,
187 .remove = _remove_, /* avoid name conflict with stdio.h */
188 .notify_connection_change = _notify_connection_change,
189 .set_message_types = _set_message_types,
190 .receive_message = _receive_message,
191 .destroy = _destroy,
192 },
193 .imvs = linked_list_create(),
194 .next_imv_id = 1,
195 );
196
197 return &this->public;
198 }