charon-nm: Port to libnm
[strongswan.git] / src / charon-nm / nm / nm_backend.c
1 /*
2 * Copyright (C) 2012 Tobias Brunner
3 * Copyright (C) 2008-2009 Martin Willi
4 * Hochschule fuer Technik Rapperswil
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * for more details.
15 */
16
17 #include "nm_service.h"
18 #include "nm_creds.h"
19 #include "nm_handler.h"
20
21 #include <daemon.h>
22 #include <processing/jobs/callback_job.h>
23
24 typedef struct nm_backend_t nm_backend_t;
25
26 /**
27 * Data for the NetworkManager backend.
28 */
29 struct nm_backend_t {
30
31 /**
32 * NetworkManager service (VPNPlugin)
33 */
34 NMStrongswanPlugin *plugin;
35
36 /**
37 * Glib main loop for a thread, handles DBUS calls
38 */
39 GMainLoop *loop;
40
41 /**
42 * credential set registered at the daemon
43 */
44 nm_creds_t *creds;
45
46 /**
47 * attribute handler regeisterd at the daemon
48 */
49 nm_handler_t *handler;
50 };
51
52 /**
53 * Global (but private) instance of the NM backend.
54 */
55 static nm_backend_t *nm_backend = NULL;
56
57 /**
58 * NM plugin processing routine, creates and handles NMVpnServicePlugin
59 */
60 static job_requeue_t run(nm_backend_t *this)
61 {
62 this->loop = g_main_loop_new(NULL, FALSE);
63 g_main_loop_run(this->loop);
64 return JOB_REQUEUE_NONE;
65 }
66
67 /**
68 * Cancel the GLib Main Event Loop
69 */
70 static bool cancel(nm_backend_t *this)
71 {
72 if (this->loop)
73 {
74 if (g_main_loop_is_running(this->loop))
75 {
76 g_main_loop_quit(this->loop);
77 }
78 g_main_loop_unref(this->loop);
79 }
80 return TRUE;
81 }
82
83 /**
84 * Deinitialize NetworkManager backend
85 */
86 static void nm_backend_deinit()
87 {
88 nm_backend_t *this = nm_backend;
89
90 if (!this)
91 {
92 return;
93 }
94 if (this->plugin)
95 {
96 g_object_unref(this->plugin);
97 }
98 lib->credmgr->remove_set(lib->credmgr, &this->creds->set);
99 charon->attributes->remove_handler(charon->attributes,
100 &this->handler->handler);
101 this->creds->destroy(this->creds);
102 this->handler->destroy(this->handler);
103 free(this);
104
105 nm_backend = NULL;
106 }
107
108 /**
109 * Initialize NetworkManager backend
110 */
111 static bool nm_backend_init()
112 {
113 nm_backend_t *this;
114
115 #if !GLIB_CHECK_VERSION(2,36,0)
116 g_type_init ();
117 #endif
118
119 #if !GLIB_CHECK_VERSION(2,23,0)
120 if (!g_thread_supported())
121 {
122 g_thread_init(NULL);
123 }
124 #endif
125
126 INIT(this,
127 .creds = nm_creds_create(),
128 .handler = nm_handler_create(),
129 );
130 this->plugin = nm_strongswan_plugin_new(this->creds, this->handler);
131 nm_backend = this;
132
133 charon->attributes->add_handler(charon->attributes, &this->handler->handler);
134 lib->credmgr->add_set(lib->credmgr, &this->creds->set);
135 if (!this->plugin)
136 {
137 DBG1(DBG_CFG, "DBUS binding failed");
138 nm_backend_deinit();
139 return FALSE;
140 }
141
142 lib->processor->queue_job(lib->processor,
143 (job_t*)callback_job_create_with_prio((callback_job_cb_t)run, this,
144 NULL, (callback_job_cancel_t)cancel, JOB_PRIO_CRITICAL));
145 return TRUE;
146 }
147
148 /**
149 * Initialize/deinitialize NetworkManager backend
150 */
151 static bool nm_backend_cb(void *plugin,
152 plugin_feature_t *feature, bool reg, void *data)
153 {
154 if (reg)
155 {
156 return nm_backend_init();
157 }
158 nm_backend_deinit();
159 return TRUE;
160 }
161
162 /*
163 * see header file
164 */
165 void nm_backend_register()
166 {
167 static plugin_feature_t features[] = {
168 PLUGIN_CALLBACK((plugin_feature_callback_t)nm_backend_cb, NULL),
169 PLUGIN_PROVIDE(CUSTOM, "NetworkManager backend"),
170 PLUGIN_DEPENDS(CUSTOM, "libcharon"),
171 PLUGIN_SDEPEND(PRIVKEY, KEY_RSA),
172 PLUGIN_SDEPEND(PRIVKEY, KEY_ECDSA),
173 PLUGIN_SDEPEND(CERT_DECODE, CERT_ANY),
174 PLUGIN_SDEPEND(CERT_DECODE, CERT_X509),
175 };
176 lib->plugins->add_static_features(lib->plugins, "nm-backend", features,
177 countof(features), TRUE, NULL, NULL);
178 }