4f397d76e80623b5ac8236143a036a0f6c8a16eb
[strongswan.git] / src / libcharon / plugins / whitelist / whitelist_plugin.c
1 /*
2 * Copyright (C) 2011 Martin Willi
3 * Copyright (C) 2011 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 "whitelist_plugin.h"
17
18 #include "whitelist_listener.h"
19 #include "whitelist_control.h"
20
21 #include <daemon.h>
22
23 typedef struct private_whitelist_plugin_t private_whitelist_plugin_t;
24
25 /**
26 * private data of whitelist plugin
27 */
28 struct private_whitelist_plugin_t {
29
30 /**
31 * implements plugin interface
32 */
33 whitelist_plugin_t public;
34
35 /**
36 * Listener checking whitelist entries during authorization
37 */
38 whitelist_listener_t *listener;
39
40 /**
41 * Whitelist control socket
42 */
43 whitelist_control_t *control;
44 };
45
46 METHOD(plugin_t, get_name, char*,
47 private_whitelist_plugin_t *this)
48 {
49 return "whitelist";
50 }
51
52 /**
53 * Register listener
54 */
55 static bool plugin_cb(private_whitelist_plugin_t *this,
56 plugin_feature_t *feature, bool reg, void *cb_data)
57 {
58 if (reg)
59 {
60 charon->bus->add_listener(charon->bus, &this->listener->listener);
61 }
62 else
63 {
64 charon->bus->remove_listener(charon->bus, &this->listener->listener);
65 }
66 return TRUE;
67 }
68
69 METHOD(plugin_t, get_features, int,
70 private_whitelist_plugin_t *this, plugin_feature_t *features[])
71 {
72 static plugin_feature_t f[] = {
73 PLUGIN_CALLBACK((plugin_feature_callback_t)plugin_cb, NULL),
74 PLUGIN_PROVIDE(CUSTOM, "whitelist"),
75 };
76 *features = f;
77 return countof(f);
78 }
79
80 METHOD(plugin_t, destroy, void,
81 private_whitelist_plugin_t *this)
82 {
83 this->listener->destroy(this->listener);
84 DESTROY_IF(this->control);
85 free(this);
86 }
87
88 /**
89 * Plugin constructor
90 */
91 plugin_t *whitelist_plugin_create()
92 {
93 private_whitelist_plugin_t *this;
94
95 if (!lib->caps->keep(lib->caps, CAP_CHOWN))
96 { /* required to chown(2) control socket */
97 DBG1(DBG_CFG, "whitelist plugin requires CAP_CHOWN capability");
98 return NULL;
99 }
100
101 INIT(this,
102 .public = {
103 .plugin = {
104 .get_name = _get_name,
105 .get_features = _get_features,
106 .destroy = _destroy,
107 },
108 },
109 .listener = whitelist_listener_create(),
110 );
111 this->control = whitelist_control_create(this->listener);
112
113 return &this->public.plugin;
114 }