1 | //plugins.c: |
---|
2 | |
---|
3 | /* |
---|
4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010-2012 |
---|
5 | * |
---|
6 | * This file is part of roard a part of RoarAudio, |
---|
7 | * a cross-platform sound system for both, home and professional use. |
---|
8 | * See README for details. |
---|
9 | * |
---|
10 | * This file is free software; you can redistribute it and/or modify |
---|
11 | * it under the terms of the GNU General Public License version 3 |
---|
12 | * as published by the Free Software Foundation. |
---|
13 | * |
---|
14 | * RoarAudio is distributed in the hope that it will be useful, |
---|
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
---|
17 | * GNU General Public License for more details. |
---|
18 | * |
---|
19 | * You should have received a copy of the GNU General Public License |
---|
20 | * along with this software; see the file COPYING. If not, write to |
---|
21 | * the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
---|
22 | * Boston, MA 02110-1301, USA. |
---|
23 | * |
---|
24 | */ |
---|
25 | |
---|
26 | #include "roard.h" |
---|
27 | |
---|
28 | #define MAX_PLUGINS 8 |
---|
29 | |
---|
30 | static struct _roard_plugin { |
---|
31 | struct roar_dl_lhandle * lhandle; |
---|
32 | int protocols[MAX_PROTOS]; |
---|
33 | } g_plugins[MAX_PLUGINS]; |
---|
34 | static struct _roard_plugin * _pp = NULL; |
---|
35 | |
---|
36 | static int _plugins_inited = 0; |
---|
37 | |
---|
38 | static int plugin_callback(enum roar_dl_fnreg_action action, int fn, int subtype, const void * object, size_t objectlen, int version, int options, void * userdata, struct roar_dl_lhandle * lhandle); |
---|
39 | static const struct roar_dl_fnreg _plugin_callbacks = { |
---|
40 | .fn = -1, |
---|
41 | .subtype = -1, |
---|
42 | .version = -1, |
---|
43 | .callback = plugin_callback, |
---|
44 | .userdata = NULL |
---|
45 | }; |
---|
46 | |
---|
47 | static struct _roard_plugin * _find_free(void) { |
---|
48 | int i; |
---|
49 | |
---|
50 | ROAR_DBG("_find_free(void) = ?"); |
---|
51 | |
---|
52 | for (i = 0; i < MAX_PLUGINS; i++) { |
---|
53 | if ( g_plugins[i].lhandle == NULL ) { |
---|
54 | memset(&(g_plugins[i]), 0, sizeof(struct _roard_plugin)); |
---|
55 | ROAR_DBG("_find_free(void) = %p // i=%i", &(g_plugins[i]), i); |
---|
56 | return &(g_plugins[i]); |
---|
57 | } |
---|
58 | } |
---|
59 | |
---|
60 | ROAR_DBG("_find_free(void) = NULL"); |
---|
61 | return NULL; |
---|
62 | } |
---|
63 | |
---|
64 | int plugins_preinit (void) { |
---|
65 | ROAR_DBG("plugins_preinit(void) = ?"); |
---|
66 | |
---|
67 | memset(g_plugins, 0, sizeof(g_plugins)); |
---|
68 | |
---|
69 | #ifdef DEBUG |
---|
70 | print_pluginlist(FORMAT_NATIVE); |
---|
71 | #endif |
---|
72 | |
---|
73 | ROAR_DBG("plugins_preinit(void) = 0"); |
---|
74 | return 0; |
---|
75 | } |
---|
76 | |
---|
77 | static inline void plugins_delete(struct _roard_plugin * plugin) { |
---|
78 | int i; |
---|
79 | |
---|
80 | ROAR_DBG("plugins_delete(plugin=%p) = ?", plugin); |
---|
81 | |
---|
82 | roar_dl_appsched_trigger(plugin->lhandle, ROAR_DL_APPSCHED_FREE); |
---|
83 | |
---|
84 | for (i = 0; i < MAX_PROTOS; i++) { |
---|
85 | if ( plugin->protocols[i] != -1 ) { |
---|
86 | clients_unregister_proto(plugin->protocols[i]); |
---|
87 | } |
---|
88 | } |
---|
89 | |
---|
90 | roar_dl_close(plugin->lhandle); |
---|
91 | memset(plugin, 0, sizeof(struct _roard_plugin)); |
---|
92 | plugin->lhandle = NULL; |
---|
93 | } |
---|
94 | |
---|
95 | static int plugins_init_one(struct _roard_plugin * plugin) { |
---|
96 | if ( plugin == NULL ) |
---|
97 | return -1; |
---|
98 | |
---|
99 | ROAR_DBG("plugins_init_one(plugin=%p) = ?", plugin); |
---|
100 | |
---|
101 | _pp = plugin; |
---|
102 | |
---|
103 | if ( roar_dl_ra_init(plugin->lhandle, NULL, NULL) == -1 ) { |
---|
104 | ROAR_WARN("plugins_init(void): Can not RA init lib at %p: %s", plugin->lhandle, roar_error2str(roar_error)); |
---|
105 | plugins_delete(plugin); |
---|
106 | return -1; |
---|
107 | } |
---|
108 | |
---|
109 | roar_dl_appsched_trigger(plugin->lhandle, ROAR_DL_APPSCHED_INIT); |
---|
110 | |
---|
111 | _pp = NULL; |
---|
112 | |
---|
113 | return 0; |
---|
114 | } |
---|
115 | |
---|
116 | int plugins_init (void) { |
---|
117 | size_t i; |
---|
118 | |
---|
119 | ROAR_DBG("plugins_init(void) = ?"); |
---|
120 | |
---|
121 | #ifdef DEBUG |
---|
122 | print_pluginlist(FORMAT_NATIVE); |
---|
123 | #endif |
---|
124 | |
---|
125 | if ( _plugins_inited ) { |
---|
126 | ROAR_DBG("plugins_init(void) = -1 // error=BUSY"); |
---|
127 | roar_err_set(ROAR_ERROR_BUSY); |
---|
128 | return -1; |
---|
129 | } |
---|
130 | |
---|
131 | ROAR_DL_RFNREG(ROAR_DL_HANDLE_APPLICATION, _plugin_callbacks); |
---|
132 | |
---|
133 | for (i = 0; i < MAX_PLUGINS; i++) { |
---|
134 | if ( g_plugins[i].lhandle != NULL ) { |
---|
135 | plugins_init_one(&(g_plugins[i])); |
---|
136 | } |
---|
137 | } |
---|
138 | |
---|
139 | _plugins_inited = 1; |
---|
140 | |
---|
141 | #ifdef DEBUG |
---|
142 | print_pluginlist(FORMAT_NATIVE); |
---|
143 | #endif |
---|
144 | |
---|
145 | ROAR_DBG("plugins_init(void) = 0"); |
---|
146 | return 0; |
---|
147 | } |
---|
148 | |
---|
149 | int plugins_free (void) { |
---|
150 | int i; |
---|
151 | |
---|
152 | ROAR_DBG("plugins_free(void) = ?"); |
---|
153 | |
---|
154 | for (i = 0; i < MAX_PLUGINS; i++) { |
---|
155 | if ( g_plugins[i].lhandle != NULL ) { |
---|
156 | plugins_delete(&(g_plugins[i])); |
---|
157 | } |
---|
158 | } |
---|
159 | |
---|
160 | return plugins_preinit(); |
---|
161 | } |
---|
162 | |
---|
163 | int plugins_update (void) { |
---|
164 | int ret = 0; |
---|
165 | int i; |
---|
166 | |
---|
167 | for (i = 0; i < MAX_PLUGINS; i++) { |
---|
168 | if ( g_plugins[i].lhandle != NULL ) { |
---|
169 | if ( roar_dl_appsched_trigger(g_plugins[i].lhandle, ROAR_DL_APPSCHED_UPDATE) == -1 ) |
---|
170 | if ( roar_error != ROAR_ERROR_NOENT ) |
---|
171 | ret = -1; |
---|
172 | } |
---|
173 | } |
---|
174 | |
---|
175 | return ret; |
---|
176 | } |
---|
177 | |
---|
178 | int plugins_load (const char * filename, const char * args) { |
---|
179 | struct _roard_plugin * next = _find_free(); |
---|
180 | struct roar_dl_librarypara * para; |
---|
181 | int i; |
---|
182 | |
---|
183 | ROAR_DBG("plugins_load(filename=\"%s\", args=\"%s\") = ?", filename, args); |
---|
184 | |
---|
185 | if ( next == NULL ) |
---|
186 | return -1; |
---|
187 | |
---|
188 | for (i = 0; i < MAX_PLUGINS; i++) |
---|
189 | next->protocols[i] = -1; |
---|
190 | |
---|
191 | if ( (para = roar_dl_para_new(args, NULL, ROARD_DL_APPNAME, ROARD_DL_ABIVERSION)) == NULL ) { |
---|
192 | ROAR_WARN("Can not load plugin (allocate para set): %s: %s", filename, roar_error2str(roar_error)); |
---|
193 | return -1; |
---|
194 | } |
---|
195 | |
---|
196 | next->lhandle = roar_dl_open(filename, ROAR_DL_FLAG_PLUGIN, 0 /* we delay this until plugins_init() */, para); |
---|
197 | roar_dl_para_unref(para); |
---|
198 | |
---|
199 | if ( next->lhandle == NULL ) { |
---|
200 | ROAR_ERR("plugins_load(filename='%s'): can not load plugin: %s", filename, roar_dl_errstr(NULL)); |
---|
201 | return -1; |
---|
202 | } |
---|
203 | |
---|
204 | if ( _plugins_inited ) |
---|
205 | return plugins_init_one(next); |
---|
206 | |
---|
207 | return 0; |
---|
208 | } |
---|
209 | |
---|
210 | void print_pluginlist(enum output_format format) { |
---|
211 | const struct roar_dl_libraryname * libname; |
---|
212 | struct _roard_plugin * p; |
---|
213 | size_t i; |
---|
214 | |
---|
215 | switch (format) { |
---|
216 | case FORMAT_NATIVE: |
---|
217 | printf(" Name\n"); |
---|
218 | printf(" Attributes\n"); |
---|
219 | printf("-----------------------------------------------------\n"); |
---|
220 | break; |
---|
221 | case FORMAT_WIKI: |
---|
222 | case FORMAT_CSV: |
---|
223 | default: |
---|
224 | roar_err_set(ROAR_ERROR_NOTSUP); |
---|
225 | return; |
---|
226 | } |
---|
227 | |
---|
228 | for (i = 0; i < MAX_PLUGINS; i++) { |
---|
229 | p = &(g_plugins[i]); |
---|
230 | if ( p->lhandle == NULL ) |
---|
231 | continue; |
---|
232 | |
---|
233 | libname = roar_dl_getlibname(p->lhandle); |
---|
234 | if ( libname == NULL ) { |
---|
235 | } else { |
---|
236 | printf(" %s\n", libname->libname); |
---|
237 | printf(" Flags: %s\n", ""); |
---|
238 | if ( libname->description != NULL ) |
---|
239 | printf(" Description: %s\n", libname->description); |
---|
240 | if ( libname->contact != NULL ) |
---|
241 | printf(" Contact: %s\n", libname->contact); |
---|
242 | } |
---|
243 | } |
---|
244 | } |
---|
245 | |
---|
246 | int plugins_reg_proto(struct roard_proto * proto) { |
---|
247 | int i; |
---|
248 | |
---|
249 | if ( _pp == NULL ) |
---|
250 | return -1; |
---|
251 | |
---|
252 | for (i = 0; i < MAX_PROTOS; i++) { |
---|
253 | if ( _pp->protocols[i] == -1 ) { |
---|
254 | _pp->protocols[i] = proto->proto; |
---|
255 | break; |
---|
256 | } |
---|
257 | } |
---|
258 | |
---|
259 | if ( i == MAX_PROTOS ) { |
---|
260 | roar_err_set(ROAR_ERROR_NOMEM); |
---|
261 | return -1; |
---|
262 | } |
---|
263 | |
---|
264 | return clients_register_proto(proto, _pp->lhandle); |
---|
265 | } |
---|
266 | |
---|
267 | static int plugin_callback(enum roar_dl_fnreg_action action, int fn, int subtype, const void * object, size_t objectlen, int version, int options, void * userdata, struct roar_dl_lhandle * lhandle) { |
---|
268 | |
---|
269 | (void)options, (void)userdata; |
---|
270 | |
---|
271 | ROAR_DBG("plugin_callback(action=%i, fn=%i, subtype=%i, object=%p, objectlen=%llu, version=%i, options=0x%x, userdata=%p, lhandle=%p) = ?", (int)action, fn, subtype, object, (long long unsigned int)objectlen, version, options, userdata, lhandle); |
---|
272 | |
---|
273 | switch (fn) { |
---|
274 | case ROAR_DL_FN_PROTO: |
---|
275 | if ( subtype != ROAR_DL_PROTO_SUBTYPE ) { |
---|
276 | ROAR_DBG("plugin_callback(action=%i, fn=%i, subtype=%i, object=%p, objectlen=%llu, version=%i, options=0x%x, userdata=%p, lhandle=%p) = -1 // error=TYPEMM", (int)action, fn, subtype, object, (long long unsigned int)objectlen, version, options, userdata, lhandle); |
---|
277 | |
---|
278 | roar_err_set(ROAR_ERROR_TYPEMM); |
---|
279 | return -1; |
---|
280 | } |
---|
281 | if ( objectlen != ROAR_DL_PROTO_SIZE ) { |
---|
282 | ROAR_DBG("plugin_callback(action=%i, fn=%i, subtype=%i, object=%p, objectlen=%llu, version=%i, options=0x%x, userdata=%p, lhandle=%p) = -1 // error=BADLIB", (int)action, fn, subtype, object, (long long unsigned int)objectlen, version, options, userdata, lhandle); |
---|
283 | roar_err_set(ROAR_ERROR_BADLIB); |
---|
284 | return -1; |
---|
285 | } |
---|
286 | if ( version != ROAR_DL_PROTO_VERSION ) { |
---|
287 | ROAR_DBG("plugin_callback(action=%i, fn=%i, subtype=%i, object=%p, objectlen=%llu, version=%i, options=0x%x, userdata=%p, lhandle=%p) = -1 // error=BADVERSION", (int)action, fn, subtype, object, (long long unsigned int)objectlen, version, options, userdata, lhandle); |
---|
288 | roar_err_set(ROAR_ERROR_BADVERSION); |
---|
289 | return -1; |
---|
290 | } |
---|
291 | switch (action) { |
---|
292 | case ROAR_DL_FNREG: |
---|
293 | return clients_register_proto_common(object, lhandle); |
---|
294 | break; |
---|
295 | case ROAR_DL_FNUNREG: |
---|
296 | return clients_unregister_proto(((const struct roard_proto *)object)->proto); |
---|
297 | break; |
---|
298 | } |
---|
299 | break; |
---|
300 | } |
---|
301 | |
---|
302 | ROAR_DBG("plugin_callback(action=%i, fn=%i, subtype=%i, object=%p, objectlen=%llu, version=%i, options=0x%x, userdata=%p, lhandle=%p) = -1 // error=NOTSUP", (int)action, fn, subtype, object, (long long unsigned int)objectlen, version, options, userdata, lhandle); |
---|
303 | roar_err_set(ROAR_ERROR_NOTSUP); |
---|
304 | return -1; |
---|
305 | } |
---|
306 | |
---|
307 | //ll |
---|