[4302] | 1 | //notify.c: |
---|
| 2 | |
---|
| 3 | /* |
---|
[6052] | 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010-2015 |
---|
[4302] | 5 | * |
---|
| 6 | * This file is part of libroar 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 | * libroar 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 | * NOTE for everyone want's to change something and send patches: |
---|
| 25 | * read README and HACKING! There a addition information on |
---|
| 26 | * the license of this document you need to read before you send |
---|
| 27 | * any patches. |
---|
| 28 | * |
---|
| 29 | * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc |
---|
| 30 | * or libpulse*: |
---|
| 31 | * The libs libroaresd, libroararts and libroarpulse link this lib |
---|
| 32 | * and are therefore GPL. Because of this it may be illigal to use |
---|
| 33 | * them with any software that uses libesd, libartsc or libpulse*. |
---|
| 34 | */ |
---|
| 35 | |
---|
| 36 | #include "libroar.h" |
---|
| 37 | |
---|
[4304] | 38 | struct roar_subscriber { |
---|
| 39 | uint32_t flags; |
---|
| 40 | uint32_t event; |
---|
| 41 | int emitter; |
---|
| 42 | int target; |
---|
| 43 | int target_type; |
---|
[4306] | 44 | void (*cb)(struct roar_notify_core * core, struct roar_event * event, void * userdata); |
---|
[4304] | 45 | void * userdata; |
---|
| 46 | size_t refc; |
---|
[4305] | 47 | unsigned int hash; |
---|
| 48 | // struct roar_subscriber * prev; |
---|
[4304] | 49 | struct roar_subscriber * next; |
---|
| 50 | }; |
---|
| 51 | |
---|
[4305] | 52 | struct roar_notify_core { |
---|
| 53 | size_t refc; |
---|
| 54 | size_t listc; |
---|
| 55 | struct roar_subscriber ** lists; |
---|
[4313] | 56 | void (*proxy)(struct roar_notify_core * core, struct roar_event * event, void * userdata); |
---|
| 57 | void * proxy_userdata; |
---|
[4305] | 58 | }; |
---|
| 59 | |
---|
[4320] | 60 | static struct roar_notify_core * _libroar_notify_core = NULL; |
---|
| 61 | |
---|
[4873] | 62 | #define _CKRCORE(ret) if ( core == NULL ) { if ( _libroar_notify_core == NULL ) { roar_err_set(ROAR_ERROR_INVAL); return (ret); } else { core = _libroar_notify_core; } } |
---|
[4305] | 63 | #define _CKICORE() _CKRCORE(-1) |
---|
| 64 | |
---|
| 65 | static unsigned int _hash_event (struct roar_notify_core * core, struct roar_event * event) { |
---|
| 66 | unsigned int hash = 0; |
---|
| 67 | unsigned int mask = core->listc - 1; |
---|
| 68 | |
---|
| 69 | hash ^= event->event >> 0; |
---|
| 70 | hash ^= event->event >> 8; |
---|
| 71 | hash ^= event->event >> 16; |
---|
| 72 | hash ^= event->event >> 24; |
---|
| 73 | |
---|
| 74 | return hash & mask; |
---|
| 75 | } |
---|
| 76 | |
---|
| 77 | struct roar_notify_core * roar_notify_core_new(ssize_t lists) { |
---|
| 78 | struct roar_notify_core * core = NULL; |
---|
| 79 | |
---|
| 80 | switch (lists) { |
---|
[4310] | 81 | case 1: |
---|
| 82 | case 2: |
---|
| 83 | case 4: |
---|
| 84 | case 8: |
---|
| 85 | case 16: |
---|
| 86 | case 32: |
---|
| 87 | case 64: |
---|
| 88 | case 128: |
---|
| 89 | case 256: |
---|
| 90 | case 512: |
---|
| 91 | case 1024: |
---|
[4305] | 92 | // they all are ok. |
---|
| 93 | break; |
---|
| 94 | case -1: |
---|
| 95 | // handle defult: |
---|
| 96 | lists = 16; |
---|
| 97 | break; |
---|
| 98 | default: |
---|
[4873] | 99 | roar_err_set(ROAR_ERROR_INVAL); |
---|
[4305] | 100 | return NULL; |
---|
| 101 | break; |
---|
| 102 | } |
---|
| 103 | |
---|
| 104 | if ( (core = roar_mm_malloc(sizeof(struct roar_notify_core))) == NULL ) { |
---|
| 105 | return NULL; |
---|
| 106 | } |
---|
| 107 | |
---|
| 108 | memset(core, 0, sizeof(struct roar_notify_core)); |
---|
| 109 | |
---|
| 110 | core->refc = 1; |
---|
| 111 | core->listc = lists; |
---|
| 112 | core->lists = roar_mm_malloc(lists*sizeof(struct roar_subscriber *)); |
---|
[4313] | 113 | core->proxy = NULL; |
---|
| 114 | core->proxy_userdata = NULL; |
---|
[4305] | 115 | |
---|
| 116 | if ( core->lists == NULL ) { |
---|
| 117 | roar_mm_free(core); |
---|
| 118 | return NULL; |
---|
| 119 | } |
---|
| 120 | |
---|
[4308] | 121 | memset(core->lists, 0, lists*sizeof(struct roar_subscriber *)); |
---|
| 122 | |
---|
[4305] | 123 | return core; |
---|
| 124 | } |
---|
| 125 | |
---|
| 126 | int roar_notify_core_ref(struct roar_notify_core * core) { |
---|
| 127 | _CKICORE(); |
---|
| 128 | |
---|
| 129 | core->refc++; |
---|
| 130 | |
---|
| 131 | return 0; |
---|
| 132 | } |
---|
| 133 | |
---|
| 134 | int roar_notify_core_unref(struct roar_notify_core * core) { |
---|
| 135 | struct roar_subscriber * cur, * next; |
---|
| 136 | size_t i; |
---|
| 137 | |
---|
| 138 | _CKICORE(); |
---|
| 139 | |
---|
| 140 | if ( core->refc == 0 ) { |
---|
| 141 | ROAR_ERR("roar_notify_core_unref(core=%p): refc is zero, must be greater zero. resolving by setting to one.", core); |
---|
| 142 | core->refc = 1; |
---|
[4973] | 143 | roar_panic(ROAR_FATAL_ERROR_MEMORY_CORRUPTION, NULL); |
---|
[4305] | 144 | } |
---|
| 145 | |
---|
| 146 | core->refc--; |
---|
| 147 | |
---|
| 148 | if ( core->refc > 0 ) { |
---|
| 149 | return 0; |
---|
| 150 | } |
---|
| 151 | |
---|
[4322] | 152 | // if we work on the global core, reset it to NULL if we free it. |
---|
| 153 | if ( core == _libroar_notify_core ) { |
---|
| 154 | _libroar_notify_core = NULL; |
---|
| 155 | } |
---|
| 156 | |
---|
[4305] | 157 | for (i = 0; i < core->listc; i++) { |
---|
| 158 | cur = core->lists[i]; |
---|
| 159 | while (cur != NULL) { |
---|
| 160 | next = cur->next; |
---|
| 161 | |
---|
| 162 | roar_mm_free(cur); |
---|
| 163 | |
---|
| 164 | cur = next; |
---|
| 165 | } |
---|
| 166 | } |
---|
| 167 | |
---|
| 168 | roar_mm_free(core->lists); |
---|
| 169 | roar_mm_free(core); |
---|
| 170 | return 0; |
---|
| 171 | } |
---|
| 172 | |
---|
[4320] | 173 | int roar_notify_core_new_global(ssize_t lists) { |
---|
| 174 | if ( _libroar_notify_core != NULL ) { |
---|
[4873] | 175 | roar_err_set(ROAR_ERROR_INVAL); |
---|
[4320] | 176 | return -1; |
---|
| 177 | } |
---|
| 178 | |
---|
| 179 | if ( (_libroar_notify_core = roar_notify_core_new(lists)) == NULL ) |
---|
| 180 | return -1; |
---|
| 181 | |
---|
| 182 | return 0; |
---|
| 183 | } |
---|
| 184 | |
---|
[5311] | 185 | struct roar_notify_core * roar_notify_core_swap_global(struct roar_notify_core * core) { |
---|
| 186 | struct roar_notify_core * ret = _libroar_notify_core; |
---|
| 187 | |
---|
| 188 | if ( core != NULL ) |
---|
| 189 | if ( roar_notify_core_ref(core) == -1 ) |
---|
| 190 | return NULL; |
---|
| 191 | |
---|
| 192 | _libroar_notify_core = core; |
---|
| 193 | |
---|
| 194 | return ret; |
---|
| 195 | } |
---|
| 196 | |
---|
[4313] | 197 | int roar_notify_core_register_proxy(struct roar_notify_core * core, void (*cb)(struct roar_notify_core * core, struct roar_event * event, void * userdata), void * userdata) { |
---|
| 198 | _CKICORE(); |
---|
| 199 | |
---|
| 200 | core->proxy = cb; |
---|
| 201 | core->proxy_userdata = userdata; |
---|
| 202 | |
---|
| 203 | return 0; |
---|
| 204 | } |
---|
| 205 | |
---|
| 206 | |
---|
[4306] | 207 | struct roar_subscriber * roar_notify_core_subscribe(struct roar_notify_core * core, struct roar_event * event, void (*cb)(struct roar_notify_core * core, struct roar_event * event, void * userdata), void * userdata) { |
---|
[4305] | 208 | struct roar_subscriber * subs = NULL; |
---|
| 209 | struct roar_subscriber * cur, * old; |
---|
| 210 | |
---|
[4309] | 211 | ROAR_DBG("roar_notify_core_subscribe(core=%p, event=%p, cb=%p, userdata=%p) = ?", core, event, cb, userdata); |
---|
| 212 | |
---|
[4305] | 213 | _CKRCORE(NULL); |
---|
| 214 | |
---|
| 215 | if ( event == NULL || cb == NULL ) { |
---|
[4309] | 216 | ROAR_DBG("roar_notify_core_subscribe(core=%p, event=%p, cb=%p, userdata=%p) = NULL // errno = EINVAL", core, event, cb, userdata); |
---|
[4873] | 217 | roar_err_set(ROAR_ERROR_FAULT); |
---|
[4305] | 218 | return NULL; |
---|
| 219 | } |
---|
| 220 | |
---|
| 221 | if ( (subs = roar_mm_malloc(sizeof(struct roar_subscriber))) == NULL ) { |
---|
[4309] | 222 | ROAR_DBG("roar_notify_core_subscribe(core=%p, event=%p, cb=%p, userdata=%p) = NULL // errno = ENOMEM?", core, event, cb, userdata); |
---|
[4305] | 223 | return NULL; |
---|
| 224 | } |
---|
| 225 | |
---|
| 226 | memset(subs, 0, sizeof(struct roar_subscriber)); |
---|
| 227 | |
---|
| 228 | subs->flags = 0; |
---|
| 229 | subs->event = event->event; |
---|
| 230 | subs->emitter = event->emitter; |
---|
| 231 | subs->target = event->target; |
---|
| 232 | subs->target_type = event->target_type; |
---|
| 233 | subs->cb = cb; |
---|
| 234 | subs->userdata = userdata; |
---|
| 235 | subs->refc = 1; |
---|
| 236 | subs->hash = _hash_event(core, event); |
---|
| 237 | subs->next = NULL; |
---|
| 238 | |
---|
| 239 | if ( (cur = core->lists[subs->hash]) == NULL ) { |
---|
| 240 | core->lists[subs->hash] = subs; |
---|
| 241 | } else { |
---|
| 242 | old = cur; |
---|
| 243 | while (cur != NULL) { |
---|
| 244 | old = cur; |
---|
| 245 | cur = cur->next; |
---|
| 246 | } |
---|
| 247 | |
---|
| 248 | old->next = subs; |
---|
| 249 | } |
---|
| 250 | |
---|
[4309] | 251 | ROAR_DBG("roar_notify_core_subscribe(core=%p, event=%p, cb=%p, userdata=%p) = %p", core, event, cb, userdata, subs); |
---|
[4305] | 252 | return subs; |
---|
| 253 | } |
---|
| 254 | |
---|
| 255 | int roar_notify_core_unsubscribe(struct roar_notify_core * core, struct roar_subscriber * subscriber) { |
---|
| 256 | struct roar_subscriber * cur, * old; |
---|
| 257 | |
---|
| 258 | _CKICORE(); |
---|
| 259 | |
---|
[4309] | 260 | if ( subscriber == NULL ) { |
---|
[4873] | 261 | roar_err_set(ROAR_ERROR_FAULT); |
---|
[4305] | 262 | return -1; |
---|
| 263 | } |
---|
| 264 | |
---|
| 265 | if ( (cur = core->lists[subscriber->hash]) == subscriber ) { |
---|
| 266 | core->lists[subscriber->hash] = core->lists[subscriber->hash]->next; |
---|
| 267 | } else { |
---|
| 268 | old = NULL; |
---|
| 269 | while (cur != NULL && cur != subscriber ) { |
---|
| 270 | old = cur; |
---|
| 271 | cur = cur->next; |
---|
| 272 | } |
---|
| 273 | |
---|
| 274 | if ( cur != subscriber ) |
---|
| 275 | return -1; |
---|
| 276 | |
---|
| 277 | old->next = cur->next; |
---|
| 278 | roar_mm_free(cur); |
---|
| 279 | } |
---|
| 280 | |
---|
| 281 | return 0; |
---|
| 282 | } |
---|
| 283 | |
---|
| 284 | int roar_notify_core_emit(struct roar_notify_core * core, struct roar_event * event) { |
---|
| 285 | struct roar_subscriber * cur; |
---|
[5151] | 286 | struct roar_error_state errstate; |
---|
[4305] | 287 | |
---|
| 288 | _CKICORE(); |
---|
| 289 | |
---|
[4309] | 290 | if ( event == NULL ) { |
---|
[4873] | 291 | roar_err_set(ROAR_ERROR_FAULT); |
---|
[4305] | 292 | return -1; |
---|
| 293 | } |
---|
| 294 | |
---|
[4316] | 295 | if ( core->proxy != NULL && !(event->flags & ROAR_EVENT_FLAG_PROXYEVENT) ) { |
---|
[4313] | 296 | core->proxy(core, event, core->proxy_userdata); |
---|
| 297 | } |
---|
| 298 | |
---|
[4305] | 299 | cur = core->lists[_hash_event(core, event)]; |
---|
[4309] | 300 | ROAR_DBG("roar_notify_core_emit(core=%p, event=%p): cur=%p", core, event, cur); |
---|
[4305] | 301 | |
---|
| 302 | while (cur != NULL) { |
---|
[4309] | 303 | ROAR_DBG("roar_notify_core_emit(core=%p, event=%p): cur=%p", core, event, cur); |
---|
| 304 | |
---|
| 305 | // test if we can skip this one: |
---|
| 306 | if ( !( (cur->event == ROAR_NOTIFY_SPECIAL || cur->event == event->event) && |
---|
| 307 | (cur->emitter == -1 || cur->emitter == event->emitter) && |
---|
| 308 | (cur->target == -1 || cur->target == event->target) && |
---|
| 309 | (cur->target_type == -1 || cur->target_type == event->target_type) |
---|
| 310 | ) ) { |
---|
| 311 | cur = cur->next; |
---|
| 312 | continue; |
---|
| 313 | } |
---|
| 314 | |
---|
[4305] | 315 | if ( cur->cb == NULL ) { |
---|
| 316 | ROAR_ERR("roar_notify_core_emit(core=%p, event=%p): cur=%p, cb is set NULL, bad.", core, event, cur); |
---|
| 317 | } else { |
---|
[5151] | 318 | // The callback is started in an clear error context which is destroyed after it finished so it |
---|
| 319 | // does not alter our caller's context. |
---|
| 320 | roar_err_store(&errstate); |
---|
| 321 | roar_err_clear_all(); |
---|
| 322 | |
---|
[4306] | 323 | cur->cb(core, event, cur->userdata); |
---|
[5151] | 324 | |
---|
| 325 | roar_err_restore(&errstate); |
---|
[4305] | 326 | } |
---|
| 327 | cur = cur->next; |
---|
| 328 | } |
---|
| 329 | |
---|
| 330 | return 0; |
---|
| 331 | } |
---|
| 332 | |
---|
[4321] | 333 | int roar_notify_core_emit_simple(uint32_t event, int emitter, int target, int target_type, int arg0, int arg1, void * arg2, ssize_t arg2_len) { |
---|
| 334 | struct roar_event locevent; |
---|
| 335 | |
---|
| 336 | memset(&locevent, 0, sizeof(locevent)); |
---|
| 337 | |
---|
| 338 | locevent.event = event; |
---|
| 339 | locevent.emitter = emitter; |
---|
| 340 | locevent.target = target; |
---|
| 341 | locevent.target_type = target_type; |
---|
| 342 | locevent.arg0 = arg0; |
---|
| 343 | locevent.arg1 = arg1; |
---|
| 344 | locevent.arg2 = arg2; |
---|
| 345 | locevent.arg2_len = arg2_len; |
---|
| 346 | |
---|
[4337] | 347 | if ( arg2 == NULL && (arg2_len == 0 || arg2_len == -1) ) { |
---|
[5445] | 348 | locevent.flags |= ROAR_EVENT_FLAG_NETTRANS; // we guess packages with only int args are network transparent. |
---|
[4337] | 349 | } |
---|
| 350 | |
---|
[4321] | 351 | return roar_notify_core_emit(NULL, &locevent); |
---|
| 352 | } |
---|
| 353 | |
---|
[4339] | 354 | |
---|
| 355 | int roar_event_to_blob(struct roar_event * event, void * blob, size_t * len) { |
---|
| 356 | size_t needed_len = (2 * 4) + (4 * 2); |
---|
| 357 | uint32_t * u32 = blob; |
---|
| 358 | uint16_t * u16 = blob; |
---|
| 359 | size_t data_offset_neg = 0; |
---|
| 360 | |
---|
| 361 | u16 += 4; |
---|
| 362 | |
---|
| 363 | // error checking: |
---|
| 364 | if ( event == NULL || blob == NULL || len == NULL ) |
---|
| 365 | return -1; |
---|
| 366 | |
---|
| 367 | if ( *len == 0 ) |
---|
| 368 | return -1; |
---|
| 369 | |
---|
| 370 | // calc and check length: |
---|
| 371 | if ( event->flags & ROAR_EVENT_FLAG_PROXYEVENT ) |
---|
| 372 | needed_len += 4; |
---|
| 373 | |
---|
| 374 | if ( event->flags & ROAR_EVENT_FLAG_NETTRANS ) { |
---|
| 375 | |
---|
| 376 | // this is not a real maximum but a value good to detect all kinds of errors. |
---|
| 377 | // a notify event should not be longer anyway. |
---|
[5019] | 378 | if ( event->arg2_len > 32767 ) |
---|
[4339] | 379 | return -1; |
---|
| 380 | |
---|
| 381 | needed_len += 4; |
---|
| 382 | if ( event->arg2_len > 0 ) { |
---|
| 383 | needed_len += event->arg2_len; |
---|
| 384 | data_offset_neg = event->arg2_len; |
---|
| 385 | } |
---|
| 386 | } |
---|
| 387 | |
---|
| 388 | if ( *len < needed_len ) |
---|
| 389 | return -1; |
---|
| 390 | |
---|
| 391 | *len = 0; |
---|
| 392 | |
---|
| 393 | // fill in the data... |
---|
| 394 | memset(blob, 0, needed_len); |
---|
| 395 | |
---|
| 396 | u32[1] = ROAR_HOST2NET32(0); |
---|
| 397 | |
---|
| 398 | if ( event->flags & ROAR_EVENT_FLAG_PROXYEVENT ) { |
---|
| 399 | u32[0] |= ROAR_HOST2NET32(ROAR_EVENT_NETFLAG_PROXYEVENT); |
---|
| 400 | u16 += 2; |
---|
| 401 | } |
---|
| 402 | |
---|
| 403 | if ( event->flags & ROAR_EVENT_FLAG_NETTRANS ) { |
---|
| 404 | u32[0] |= ROAR_HOST2NET32(ROAR_EVENT_NETFLAG_DATA); |
---|
| 405 | } |
---|
| 406 | |
---|
| 407 | u32[1] = ROAR_HOST2NET32(event->event); |
---|
| 408 | |
---|
| 409 | if ( event->flags & ROAR_EVENT_FLAG_PROXYEVENT ) |
---|
| 410 | u32[2] = ROAR_HOST2NET32(event->event_proxy); |
---|
| 411 | |
---|
| 412 | u16[0] = ROAR_HOST2NET16(event->emitter); |
---|
| 413 | u16[1] = ROAR_HOST2NET16(event->target); |
---|
| 414 | u16[2] = ROAR_HOST2NET16(event->target_type); |
---|
| 415 | if ( event->flags & ROAR_EVENT_FLAG_NETTRANS ) { |
---|
| 416 | u16[3] = ROAR_HOST2NET16(event->arg2_len); |
---|
| 417 | u16[4] = ROAR_HOST2NET16(event->arg0); |
---|
| 418 | u16[5] = ROAR_HOST2NET16(event->arg1); |
---|
| 419 | } else { |
---|
| 420 | u16[3] = ROAR_HOST2NET16(0); |
---|
| 421 | } |
---|
| 422 | |
---|
| 423 | memcpy(blob + needed_len - data_offset_neg, event->arg2, event->arg2_len); |
---|
| 424 | |
---|
| 425 | *len = needed_len; |
---|
| 426 | |
---|
| 427 | return 0; |
---|
| 428 | } |
---|
| 429 | |
---|
| 430 | int roar_event_from_blob(struct roar_event * event, void * blob, size_t * len) { |
---|
| 431 | size_t needed_len = (2 * 4) + (4 * 2); |
---|
| 432 | uint32_t * u32 = blob; |
---|
| 433 | uint16_t * u16 = blob; |
---|
| 434 | uint32_t flags; |
---|
| 435 | |
---|
| 436 | u16 += 4; |
---|
| 437 | |
---|
| 438 | // error checking: |
---|
| 439 | if ( event == NULL || blob == NULL || len == NULL ) |
---|
| 440 | return -1; |
---|
| 441 | |
---|
| 442 | // check for minimum length. |
---|
| 443 | if ( *len < needed_len ) |
---|
| 444 | return -1; |
---|
| 445 | |
---|
| 446 | flags = ROAR_NET2HOST32(u32[0]); |
---|
| 447 | |
---|
| 448 | #if 0 |
---|
| 449 | if ( event->flags & ROAR_EVENT_FLAG_PROXYEVENT ) { |
---|
| 450 | u32[0] |= ROAR_HOST2NET32(ROAR_EVENT_NETFLAG_PROXYEVENT); |
---|
| 451 | u16 += 2; |
---|
| 452 | } |
---|
| 453 | |
---|
| 454 | if ( event->flags & ROAR_EVENT_FLAG_NETTRANS ) { |
---|
| 455 | u32[0] |= ROAR_HOST2NET32(ROAR_EVENT_NETFLAG_DATA); |
---|
| 456 | } |
---|
| 457 | #endif |
---|
| 458 | |
---|
| 459 | if ( flags & ROAR_EVENT_NETFLAG_PROXYEVENT ) { |
---|
| 460 | needed_len += 4; |
---|
| 461 | u16 += 2; |
---|
| 462 | } |
---|
| 463 | |
---|
| 464 | if ( flags & ROAR_EVENT_NETFLAG_DATA ) { |
---|
| 465 | needed_len += 4; |
---|
| 466 | } |
---|
| 467 | |
---|
| 468 | // do we have a full header? |
---|
| 469 | if ( *len < needed_len ) |
---|
| 470 | return -1; |
---|
| 471 | |
---|
| 472 | needed_len += ROAR_NET2HOST16(u16[3]); |
---|
| 473 | |
---|
| 474 | // is all of the event complet? |
---|
| 475 | if ( *len < needed_len ) |
---|
| 476 | return -1; |
---|
| 477 | |
---|
| 478 | // now we know everything is complet we can start to extract data... |
---|
| 479 | |
---|
| 480 | *len = 0; |
---|
| 481 | |
---|
| 482 | memset(event, 0, sizeof(struct roar_event)); |
---|
| 483 | |
---|
| 484 | if ( flags & ROAR_EVENT_NETFLAG_PROXYEVENT ) { |
---|
| 485 | flags -= ROAR_EVENT_NETFLAG_PROXYEVENT; |
---|
| 486 | event->flags |= ROAR_EVENT_FLAG_PROXYEVENT; |
---|
| 487 | } |
---|
| 488 | |
---|
| 489 | if ( flags & ROAR_EVENT_NETFLAG_DATA ) { |
---|
| 490 | flags -= ROAR_EVENT_NETFLAG_DATA; |
---|
| 491 | event->flags |= ROAR_EVENT_FLAG_NETTRANS; |
---|
| 492 | } |
---|
| 493 | |
---|
| 494 | // test if there are flags left we do not understand: |
---|
| 495 | if ( flags ) { |
---|
| 496 | return -1; |
---|
| 497 | } |
---|
| 498 | |
---|
| 499 | event->event = ROAR_NET2HOST32(u32[1]); |
---|
| 500 | |
---|
| 501 | if ( event->flags & ROAR_EVENT_FLAG_PROXYEVENT ) |
---|
| 502 | event->event_proxy = ROAR_NET2HOST32(u32[2]); |
---|
| 503 | |
---|
| 504 | event->emitter = ROAR_NET2HOST16(u16[0]); |
---|
| 505 | event->target = ROAR_NET2HOST16(u16[1]); |
---|
| 506 | event->target_type = ROAR_NET2HOST16(u16[2]); |
---|
| 507 | event->arg2_len = ROAR_NET2HOST16(u16[3]); |
---|
| 508 | |
---|
[4342] | 509 | if ( event->emitter == (uint16_t)-1) |
---|
| 510 | event->emitter = -1; |
---|
| 511 | |
---|
| 512 | if ( event->target == (uint16_t)-1) |
---|
| 513 | event->target = -1; |
---|
| 514 | |
---|
| 515 | if ( event->target_type == (uint16_t)-1) |
---|
| 516 | event->target_type = -1; |
---|
| 517 | |
---|
[4339] | 518 | if ( event->flags & ROAR_EVENT_FLAG_NETTRANS ) { |
---|
| 519 | event->arg0 = ROAR_NET2HOST16(u16[4]); |
---|
[4342] | 520 | event->arg1 = ROAR_NET2HOST16(u16[5]); |
---|
| 521 | |
---|
| 522 | if ( event->arg0 == (uint16_t)-1) |
---|
| 523 | event->arg0 = -1; |
---|
| 524 | |
---|
| 525 | if ( event->arg1 == (uint16_t)-1) |
---|
| 526 | event->arg1 = -1; |
---|
| 527 | |
---|
[4339] | 528 | event->arg2 = blob + needed_len - event->arg2_len; |
---|
| 529 | } else { |
---|
| 530 | event->arg0 = -1; |
---|
| 531 | event->arg1 = -1; |
---|
| 532 | event->arg2 = NULL; |
---|
| 533 | } |
---|
| 534 | |
---|
| 535 | *len = needed_len; |
---|
| 536 | |
---|
| 537 | return 0; |
---|
| 538 | } |
---|
| 539 | |
---|
| 540 | |
---|
[4302] | 541 | //ll |
---|