1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
*
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <errno.h>
#include <dlfcn.h>
#include <string.h>
#include <sys/stat.h>
#include <glib.h>
#include "lib/bluetooth.h"
#include "btio/btio.h"
#include "src/plugin.h"
#include "src/log.h"
#include "src/btd.h"
static GSList *plugins = NULL;
struct bluetooth_plugin {
void *handle;
gboolean active;
struct bluetooth_plugin_desc *desc;
};
static int compare_priority(gconstpointer a, gconstpointer b)
{
const struct bluetooth_plugin *plugin1 = a;
const struct bluetooth_plugin *plugin2 = b;
return plugin2->desc->priority - plugin1->desc->priority;
}
static gboolean add_plugin(void *handle, struct bluetooth_plugin_desc *desc)
{
struct bluetooth_plugin *plugin;
if (desc->init == NULL)
return FALSE;
if (g_str_equal(desc->version, VERSION) == FALSE) {
error("Version mismatch for %s", desc->name);
return FALSE;
}
DBG("Loading %s plugin", desc->name);
plugin = g_try_new0(struct bluetooth_plugin, 1);
if (plugin == NULL)
return FALSE;
plugin->handle = handle;
plugin->active = FALSE;
plugin->desc = desc;
__btd_enable_debug(desc->debug_start, desc->debug_stop);
plugins = g_slist_insert_sorted(plugins, plugin, compare_priority);
return TRUE;
}
static gboolean enable_plugin(const char *name, char **cli_enable,
char **cli_disable)
{
if (cli_disable) {
for (; *cli_disable; cli_disable++)
if (g_pattern_match_simple(*cli_disable, name))
break;
if (*cli_disable) {
info("Excluding (cli) %s", name);
return FALSE;
}
}
if (cli_enable) {
for (; *cli_enable; cli_enable++)
if (g_pattern_match_simple(*cli_enable, name))
break;
if (!*cli_enable) {
info("Ignoring (cli) %s", name);
return FALSE;
}
}
return TRUE;
}
#include "src/builtin.h"
gboolean plugin_init(const char *enable, const char *disable)
{
GSList *list;
GDir *dir;
const char *file;
char **cli_disabled, **cli_enabled;
unsigned int i;
/* Make a call to BtIO API so its symbols got resolved before the
* plugins are loaded. */
bt_io_error_quark();
if (enable)
cli_enabled = g_strsplit_set(enable, ", ", -1);
else
cli_enabled = NULL;
if (disable)
cli_disabled = g_strsplit_set(disable, ", ", -1);
else
cli_disabled = NULL;
DBG("Loading builtin plugins");
for (i = 0; __bluetooth_builtin[i]; i++) {
if (!enable_plugin(__bluetooth_builtin[i]->name, cli_enabled,
cli_disabled))
continue;
add_plugin(NULL, __bluetooth_builtin[i]);
}
if (strlen(PLUGINDIR) == 0)
goto start;
DBG("Loading plugins %s", PLUGINDIR);
dir = g_dir_open(PLUGINDIR, 0, NULL);
if (!dir)
goto start;
while ((file = g_dir_read_name(dir)) != NULL) {
struct bluetooth_plugin_desc *desc;
void *handle;
char *filename;
if (g_str_has_prefix(file, "lib") == TRUE ||
g_str_has_suffix(file, ".so") == FALSE)
continue;
filename = g_build_filename(PLUGINDIR, file, NULL);
handle = dlopen(filename, RTLD_NOW);
if (handle == NULL) {
error("Can't load plugin %s: %s", filename,
dlerror());
g_free(filename);
continue;
}
g_free(filename);
desc = dlsym(handle, "bluetooth_plugin_desc");
if (desc == NULL) {
error("Can't load plugin description: %s", dlerror());
dlclose(handle);
continue;
}
if (!enable_plugin(desc->name, cli_enabled, cli_disabled)) {
dlclose(handle);
continue;
}
if (add_plugin(handle, desc) == FALSE)
dlclose(handle);
}
g_dir_close(dir);
start:
for (list = plugins; list; list = list->next) {
struct bluetooth_plugin *plugin = list->data;
int err;
err = plugin->desc->init();
if (err < 0) {
if (err == -ENOSYS)
warn("System does not support %s plugin",
plugin->desc->name);
else
error("Failed to init %s plugin",
plugin->desc->name);
continue;
}
plugin->active = TRUE;
}
g_strfreev(cli_enabled);
g_strfreev(cli_disabled);
return TRUE;
}
void plugin_cleanup(void)
{
GSList *list;
DBG("Cleanup plugins");
for (list = plugins; list; list = list->next) {
struct bluetooth_plugin *plugin = list->data;
if (plugin->active == TRUE && plugin->desc->exit)
plugin->desc->exit();
if (plugin->handle != NULL)
dlclose(plugin->handle);
g_free(plugin);
}
g_slist_free(plugins);
}
|
