addrblock: Use plugin features with soft dependency on X.509 decoding
[strongswan.git] / src / libcharon / plugins / addrblock / addrblock_plugin.c
1 /*
2 * Copyright (C) 2010 Martin Willi
3 * Copyright (C) 2010 revosec AG
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 "addrblock_plugin.h"
17
18 #include <daemon.h>
19 #include <plugins/plugin_feature.h>
20
21 #include "addrblock_validator.h"
22 #include "addrblock_narrow.h"
23
24 typedef struct private_addrblock_plugin_t private_addrblock_plugin_t;
25
26 /**
27 * private data of addrblock_plugin
28 */
29 struct private_addrblock_plugin_t {
30
31 /**
32 * public functions
33 */
34 addrblock_plugin_t public;
35
36 /**
37 * Validator implementation instance.
38 */
39 addrblock_validator_t *validator;
40
41 /**
42 * Listener to check TS list
43 */
44 addrblock_narrow_t *narrower;
45 };
46
47 METHOD(plugin_t, get_name, char*,
48 private_addrblock_plugin_t *this)
49 {
50 return "addrblock";
51 }
52
53 /**
54 * Register listener
55 */
56 static bool plugin_cb(private_addrblock_plugin_t *this,
57 plugin_feature_t *feature, bool reg, void *cb_data)
58 {
59 if (reg)
60 {
61 lib->credmgr->add_validator(lib->credmgr, &this->validator->validator);
62 charon->bus->add_listener(charon->bus, &this->narrower->listener);
63 }
64 else
65 {
66 charon->bus->remove_listener(charon->bus, &this->narrower->listener);
67 lib->credmgr->remove_validator(lib->credmgr,
68 &this->validator->validator);
69 }
70 return TRUE;
71 }
72
73 METHOD(plugin_t, get_features, int,
74 private_addrblock_plugin_t *this, plugin_feature_t *features[])
75 {
76 static plugin_feature_t f[] = {
77 PLUGIN_CALLBACK((plugin_feature_callback_t)plugin_cb, NULL),
78 PLUGIN_PROVIDE(CUSTOM, "addrblock"),
79 PLUGIN_SDEPEND(CERT_DECODE, CERT_X509),
80 };
81 *features = f;
82 return countof(f);
83 }
84
85 METHOD(plugin_t, destroy, void,
86 private_addrblock_plugin_t *this)
87 {
88 this->narrower->destroy(this->narrower);
89 this->validator->destroy(this->validator);
90 free(this);
91 }
92
93 /*
94 * see header file
95 */
96 plugin_t *addrblock_plugin_create()
97 {
98 private_addrblock_plugin_t *this;
99
100 INIT(this,
101 .public = {
102 .plugin = {
103 .get_name = _get_name,
104 .get_features = _get_features,
105 .destroy = _destroy,
106 },
107 },
108 .validator = addrblock_validator_create(),
109 .narrower = addrblock_narrow_create(),
110 );
111
112 return &this->public.plugin;
113 }