replace para_connect() by PARA_CONNECT.
[paraslash.git] / afs.c
1 /*
2 * Copyright (C) 2007 Andre Noll <maan@systemlinux.org>
3 *
4 * Licensed under the GPL v2. For licencing details see COPYING.
5 */
6
7 /** \file afs.c Paraslash's audio file selector. */
8
9 #include "server.cmdline.h"
10 #include "para.h"
11 #include "afh.h"
12 #include "server.h"
13 #include "error.h"
14 #include <dirent.h> /* readdir() */
15 #include <sys/mman.h>
16 #include <sys/time.h>
17 #include "net.h"
18 #include "afs.h"
19 #include "ipc.h"
20 #include "string.h"
21 #include "list.h"
22 #include "sched.h"
23 #include "signal.h"
24 #include "fd.h"
25
26 /** The osl tables used by afs. \sa blob.c. */
27 enum afs_table_num {
28 /** Contains audio file information. See aft.c. */
29 TBLNUM_AUDIO_FILES,
30 /** The table for the paraslash attributes. See attribute.c. */
31 TBLNUM_ATTRIBUTES,
32 /**
33 * Paraslash's scoring system is based on Gaussian normal
34 * distributions, and the relevant data is stored in the rbtrees of an
35 * osl table containing only volatile columns. See score.c for
36 * details.
37 */
38 TBLNUM_SCORES,
39 /**
40 * A standard blob table containing the mood definitions. For details
41 * see mood.c.
42 */
43 TBLNUM_MOODS,
44 /** A blob table containing lyrics on a per-song basis. */
45 TBLNUM_LYRICS,
46 /** Another blob table for images (for example album cover art). */
47 TBLNUM_IMAGES,
48 /** Yet another blob table for storing standard playlists. */
49 TBLNUM_PLAYLIST,
50 /** How many tables are in use? */
51 NUM_AFS_TABLES
52 };
53
54 static struct table_info afs_tables[NUM_AFS_TABLES];
55
56 struct command_task {
57 /** The file descriptor for the local socket. */
58 int fd;
59 /**
60 * Value sent by the command handlers to identify themselves as
61 * children of the running para_server.
62 */
63 uint32_t cookie;
64 /** The associated task structure. */
65 struct task task;
66 };
67
68 /**
69 * A random number used to "authenticate" the connection.
70 *
71 * para_server picks this number by random before forking the afs process. The
72 * command handlers write this number together with the id of the shared memory
73 * area containing the query. This way, a malicious local user has to know this
74 * number to be able to cause the afs process to crash by sending fake queries.
75 */
76 extern uint32_t afs_socket_cookie;
77
78 /**
79 * Struct to let command handlers execute a callback in afs context.
80 *
81 * Commands that need to change the state of afs can't change the relevant data
82 * structures directly because commands are executed in a child process, i.e.
83 * they get their own virtual address space.
84 *
85 * This structure is used by \p send_callback_request() (executed from handler
86 * context) in order to let the afs process call the specified function. An
87 * instance of that structure is written to a shared memory area together with
88 * the arguments to the callback function. The identifier of the shared memory
89 * area is written to the command socket.
90 *
91 * The afs process accepts connections on the command socket and reads the
92 * shared memory id, attaches the corresponing area, calls the given handler to
93 * perform the desired action and to optionally compute a result.
94 *
95 * The result and a \p callback_result structure is then written to another
96 * shared memory area. The identifier for that area is written to the handler's
97 * command socket, so that the handler process can read the id, attach the
98 * shared memory area and use the result.
99 *
100 * \sa struct callback_result.
101 */
102 struct callback_query {
103 /** The function to be called. */
104 callback_function *handler;
105 /** The number of bytes of the query */
106 size_t query_size;
107 };
108
109 /**
110 * Structure embedded in the result of a callback.
111 *
112 * If the callback produced a result, an instance of that structure is embeeded
113 * into the shared memory area holding the result, mainly to let the command
114 * handler know the size of the result.
115 *
116 * \sa struct callback_query.
117 */
118 struct callback_result {
119 /** The number of bytes of the result. */
120 size_t result_size;
121 };
122
123 /**
124 * Ask the parent process to call a given function.
125 *
126 * \param f The function to be called.
127 * \param query Pointer to arbitrary data for the callback.
128 * \param result Callback result will be stored here.
129 *
130 * This function creates a shared memory area, copies the buffer pointed to by
131 * \a buf to that area and notifies the afs process that \a f should be
132 * called ASAP.
133 *
134 * \return Negative, on errors, the return value of the callback function
135 * otherwise.
136 *
137 * \sa send_option_arg_callback_request(), send_standard_callback_request().
138 */
139 int send_callback_request(callback_function *f, struct osl_object *query,
140 struct osl_object *result)
141 {
142 struct callback_query *cq;
143 struct callback_result *cr;
144 int ret, fd = -1, query_shmid, result_shmid;
145 void *query_shm, *result_shm;
146 char buf[sizeof(afs_socket_cookie) + sizeof(int)];
147 // char *tmpsocket_name;
148 struct sockaddr_un unix_addr;
149
150 assert(query->data && query->size);
151 ret = shm_new(query->size + sizeof(*cq));
152 if (ret < 0)
153 return ret;
154 query_shmid = ret;
155 ret = shm_attach(query_shmid, ATTACH_RW, &query_shm);
156 if (ret < 0)
157 goto out;
158 cq = query_shm;
159 cq->handler = f;
160 cq->query_size = query->size;
161
162 memcpy(query_shm + sizeof(*cq), query->data, query->size);
163 ret = shm_detach(query_shm);
164 if (ret < 0)
165 goto out;
166
167 *(uint32_t *) buf = afs_socket_cookie;
168 *(int *) (buf + sizeof(afs_socket_cookie)) = query_shmid;
169
170 ret = get_stream_socket(PF_UNIX);
171 if (ret < 0)
172 goto out;
173 fd = ret;
174 ret = init_unix_addr(&unix_addr, conf.afs_socket_arg);
175 if (ret < 0)
176 goto out;
177 ret = PARA_CONNECT(fd, &unix_addr);
178 if (ret < 0)
179 goto out;
180 ret = send_bin_buffer(fd, buf, sizeof(buf));
181 if (ret < 0)
182 goto out;
183 ret = recv_bin_buffer(fd, buf, sizeof(buf));
184 if (ret < 0)
185 goto out;
186 if (ret != sizeof(int)) {
187 ret = -E_RECV;
188 goto out;
189 }
190 ret = *(int *) buf;
191 if (ret <= 0)
192 goto out;
193 result_shmid = ret;
194 ret = shm_attach(result_shmid, ATTACH_RO, &result_shm);
195 if (ret >= 0) {
196 assert(result);
197 cr = result_shm;
198 result->size = cr->result_size;
199 result->data = para_malloc(result->size);
200 memcpy(result->data, result_shm + sizeof(*cr), result->size);
201 ret = shm_detach(result_shm);
202 if (ret < 0)
203 PARA_ERROR_LOG("can not detach result\n");
204 } else
205 PARA_ERROR_LOG("attach result failed: %d\n", ret);
206 if (shm_destroy(result_shmid) < 0)
207 PARA_ERROR_LOG("destroy result failed\n");
208 ret = 1;
209 out:
210 if (shm_destroy(query_shmid) < 0)
211 PARA_ERROR_LOG("%s\n", "shm destroy error");
212 if (fd >= 0)
213 close(fd);
214 // PARA_DEBUG_LOG("callback_ret: %d\n", ret);
215 return ret;
216 }
217
218 /**
219 * Send a callback request passing an options structure and an argument vector.
220 *
221 * \param options pointer to an arbitrary data structure.
222 * \param argc Argument count.
223 * \param argv Standard argument vector.
224 * \param f The callback function.
225 * \param result The result of the query is stored here.
226 *
227 * Some commands have a couple of options that are parsed in child context for
228 * syntactic correctness and are stored in a special options structure for that
229 * command. This function allows to pass such a structure together with a list
230 * of further arguments (often a list of audio files) to the parent process.
231 *
232 * \sa send_standard_callback_request(), send_callback_request().
233 */
234 int send_option_arg_callback_request(struct osl_object *options,
235 int argc, char * const * const argv, callback_function *f,
236 struct osl_object *result)
237 {
238 char *p;
239 int i, ret;
240 struct osl_object query = {.size = options? options->size : 0};
241
242 for (i = 0; i < argc; i++)
243 query.size += strlen(argv[i]) + 1;
244 query.data = para_malloc(query.size);
245 p = query.data;
246 if (options) {
247 memcpy(query.data, options->data, options->size);
248 p += options->size;
249 }
250 for (i = 0; i < argc; i++) {
251 strcpy(p, argv[i]); /* OK */
252 p += strlen(argv[i]) + 1;
253 }
254 ret = send_callback_request(f, &query, result);
255 free(query.data);
256 return ret;
257 }
258
259 /**
260 * Send a callback request with an argument vector only.
261 *
262 * \param argc The same meaning as in send_option_arg_callback_request().
263 * \param argv The same meaning as in send_option_arg_callback_request().
264 * \param f The same meaning as in send_option_arg_callback_request().
265 * \param result The same meaning as in send_option_arg_callback_request().
266 *
267 * This is similar to send_option_arg_callback_request(), but no options buffer
268 * is passed to the parent process.
269 *
270 * \return The return value of the underlying call to
271 * send_option_arg_callback_request().
272 */
273 int send_standard_callback_request(int argc, char * const * const argv,
274 callback_function *f, struct osl_object *result)
275 {
276 return send_option_arg_callback_request(NULL, argc, argv, f, result);
277 }
278
279 /**
280 * Compare two osl objects of string type.
281 *
282 * \param obj1 Pointer to the first object.
283 * \param obj2 Pointer to the second object.
284 *
285 * In any case, only \p MIN(obj1->size, obj2->size) characters of each string
286 * are taken into account.
287 *
288 * \return It returns an integer less than, equal to, or greater than zero if
289 * \a obj1 is found, respectively, to be less than, to match, or be greater than
290 * obj2.
291 *
292 * \sa strcmp(3), strncmp(3), osl_compare_func.
293 */
294 int string_compare(const struct osl_object *obj1, const struct osl_object *obj2)
295 {
296 const char *str1 = (const char *)obj1->data;
297 const char *str2 = (const char *)obj2->data;
298 return strncmp(str1, str2, PARA_MIN(obj1->size, obj2->size));
299 }
300
301 /**
302 * A wrapper for strtol(3).
303 *
304 * \param str The string to be converted to a long integer.
305 * \param result The converted value is stored here.
306 *
307 * \return Positive on success, -E_ATOL on errors.
308 *
309 * \sa strtol(3), atoi(3).
310 */
311 int para_atol(const char *str, long *result)
312 {
313 char *endptr;
314 long val;
315 int ret, base = 10;
316
317 errno = 0; /* To distinguish success/failure after call */
318 val = strtol(str, &endptr, base);
319 ret = -E_ATOL;
320 if (errno == ERANGE && (val == LONG_MAX || val == LONG_MIN))
321 goto out; /* overflow */
322 if (errno != 0 && val == 0)
323 goto out; /* other error */
324 if (endptr == str)
325 goto out; /* No digits were found */
326 if (*endptr != '\0')
327 goto out; /* Further characters after number */
328 *result = val;
329 ret = 1;
330 out:
331 return ret;
332 }
333
334
335 /*
336 * write input from fd to dynamically allocated char array,
337 * but maximal max_size byte. Return size.
338 */
339 static int fd2buf(int fd, char **buf, int max_size)
340 {
341 const size_t chunk_size = 1024;
342 size_t size = 2048;
343 char *p;
344 int ret;
345
346 *buf = para_malloc(size * sizeof(char));
347 p = *buf;
348 while ((ret = read(fd, p, chunk_size)) > 0) {
349 p += ret;
350 if ((p - *buf) + chunk_size >= size) {
351 char *tmp;
352
353 size *= 2;
354 if (size > max_size) {
355 ret = -E_INPUT_TOO_LARGE;
356 goto out;
357 }
358 tmp = para_realloc(*buf, size);
359 p = (p - *buf) + tmp;
360 *buf = tmp;
361 }
362 }
363 if (ret < 0) {
364 ret = -E_READ;
365 goto out;
366 }
367 ret = p - *buf;
368 out:
369 if (ret < 0 && *buf)
370 free(*buf);
371 return ret;
372 }
373
374 /**
375 * Read from stdin, and send the result to the parent process.
376 *
377 * \param arg_obj Pointer to the arguments to \a f.
378 * \param f The callback function.
379 * \param max_len Don't read more than that many bytes from stdin.
380 * \param result The result of the query is stored here.
381 *
382 * This function is used by commands that wish to let para_server store
383 * arbitrary data specified by the user (for instance the add_blob family of
384 * commands). First, at most \a max_len bytes are read from stdin, the result
385 * is concatenated with the buffer given by \a arg_obj, and the combined buffer
386 * is made available to the parent process via shared memory.
387 *
388 * \return Negative on errors, the return value of the underlying call to
389 * send_callback_request() otherwise.
390 */
391 int stdin_command(struct osl_object *arg_obj, callback_function *f,
392 unsigned max_len, struct osl_object *result)
393 {
394 char *stdin_buf;
395 size_t stdin_len;
396 struct osl_object query;
397 int ret = fd2buf(STDIN_FILENO, &stdin_buf, max_len);
398
399 if (ret < 0)
400 return ret;
401 stdin_len = ret;
402 query.size = arg_obj->size + stdin_len;
403 query.data = para_malloc(query.size);
404 memcpy(query.data, arg_obj->data, arg_obj->size);
405 memcpy((char *)query.data + arg_obj->size, stdin_buf, stdin_len);
406 free(stdin_buf);
407 ret = send_callback_request(f, &query, result);
408 free(query.data);
409 return ret;
410 }
411
412 /**
413 * Open the audio file with highest score.
414 *
415 * \param afd Audio file data is returned here.
416 *
417 * This stores all information for streaming the "best" audio file
418 * in the \a afd structure.
419 *
420 * \return Positive on success, negative on errors.
421 *
422 * \sa close_audio_file(), open_and_update_audio_file().
423 */
424 int open_next_audio_file(struct audio_file_data *afd)
425 {
426 struct osl_row *aft_row;
427 int ret;
428 for (;;) {
429 ret = score_get_best(&aft_row, &afd->score);
430 if (ret < 0)
431 return ret;
432 ret = open_and_update_audio_file(aft_row, afd);
433 if (ret >= 0)
434 return ret;
435 }
436 }
437
438 /**
439 * Free all resources which were allocated by open_next_audio_file().
440 *
441 * \param afd The structure previously filled in by open_next_audio_file().
442 *
443 * \return The return value of the underlying call to para_munmap().
444 *
445 * \sa open_next_audio_file().
446 */
447 int close_audio_file(struct audio_file_data *afd)
448 {
449 free(afd->afhi.chunk_table);
450 return para_munmap(afd->map.data, afd->map.size);
451 }
452
453 #if 0
454 static void play_loop(enum play_mode current_play_mode)
455 {
456 int i, ret;
457 struct audio_file_data afd;
458
459 afd.current_play_mode = current_play_mode;
460 for (i = 0; i < 0; i++) {
461 ret = open_next_audio_file(&afd);
462 if (ret < 0) {
463 PARA_ERROR_LOG("failed to open next audio file: %d\n", ret);
464 return;
465 }
466 PARA_NOTICE_LOG("next audio file: %s, score: %li\n", afd.path, afd.score);
467 sleep(1);
468 close_audio_file(&afd);
469 }
470 }
471 #endif
472
473
474 static enum play_mode init_admissible_files(void)
475 {
476 int ret;
477 char *given_mood, *given_playlist;
478
479 given_mood = "mood_that_was_given_at_the_command_line";
480 given_playlist = "given_playlist";
481
482 if (given_mood) {
483 ret = mood_open(given_mood);
484 if (ret >= 0) {
485 if (given_playlist)
486 PARA_WARNING_LOG("ignoring playlist %s\n",
487 given_playlist);
488 return PLAY_MODE_MOOD;
489 }
490 }
491 if (given_playlist) {
492 ret = playlist_open(given_playlist);
493 if (ret >= 0)
494 return PLAY_MODE_PLAYLIST;
495 }
496 ret = mood_open(NULL); /* open first available mood */
497 if (ret >= 0)
498 return PLAY_MODE_MOOD;
499 mood_open(""); /* open dummy mood, always successful */
500 return PLAY_MODE_MOOD;
501 }
502
503 static int setup_command_socket_or_die(void)
504 {
505 int ret;
506 char *socket_name = conf.afs_socket_arg;
507 struct sockaddr_un unix_addr;
508
509 unlink(socket_name);
510 ret = create_local_socket(socket_name, &unix_addr,
511 S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IWOTH);
512 if (ret < 0) {
513 PARA_EMERG_LOG("%s: %s\n", PARA_STRERROR(-ret), socket_name);
514 exit(EXIT_FAILURE);
515 }
516 if (listen(ret , 5) < 0) {
517 PARA_EMERG_LOG("%s", "can not listen on socket\n");
518 exit(EXIT_FAILURE);
519 }
520 PARA_INFO_LOG("listening on command socket %s (fd %d)\n", socket_name,
521 ret);
522 return ret;
523 }
524
525 static int server_socket;
526 static struct command_task command_task_struct;
527 static struct signal_task signal_task_struct;
528
529 static void unregister_tasks(void)
530 {
531 unregister_task(&command_task_struct.task);
532 unregister_task(&signal_task_struct.task);
533 }
534
535 static void close_afs_tables(enum osl_close_flags flags)
536 {
537 PARA_NOTICE_LOG("closing afs_tables\n");
538 score_shutdown(flags);
539 attribute_shutdown(flags);
540 mood_close();
541 playlist_close();
542 moods_shutdown(flags);
543 playlists_shutdown(flags);
544 lyrics_shutdown(flags);
545 images_shutdown(flags);
546 aft_shutdown(flags);
547 }
548
549 static void signal_pre_select(struct sched *s, struct task *t)
550 {
551 struct signal_task *st = t->private_data;
552 t->ret = 1;
553 para_fd_set(st->fd, &s->rfds, &s->max_fileno);
554 }
555
556 static void signal_post_select(struct sched *s, struct task *t)
557 {
558 struct signal_task *st = t->private_data;
559 t->ret = 1;
560 if (!FD_ISSET(st->fd, &s->rfds))
561 return;
562 st->signum = para_next_signal();
563 PARA_NOTICE_LOG("caught signal %d\n", st->signum);
564 t->ret = 1;
565 if (st->signum == SIGUSR1)
566 return; /* ignore SIGUSR1 */
567 t->ret = -E_SIGNAL_CAUGHT;
568 unregister_tasks();
569 }
570
571 static void register_signal_task(void)
572 {
573 struct signal_task *st = &signal_task_struct;
574 st->fd = para_signal_init();
575 PARA_INFO_LOG("signal pipe: fd %d\n", st->fd);
576 para_install_sighandler(SIGINT);
577 para_install_sighandler(SIGTERM);
578 para_install_sighandler(SIGPIPE);
579
580 st->task.pre_select = signal_pre_select;
581 st->task.post_select = signal_post_select;
582 st->task.private_data = st;
583 sprintf(st->task.status, "signal task");
584 register_task(&st->task);
585 }
586
587 static void command_pre_select(struct sched *s, struct task *t)
588 {
589 struct command_task *ct = t->private_data;
590 t->ret = 1;
591 para_fd_set(ct->fd, &s->rfds, &s->max_fileno);
592 }
593
594 /*
595 * On errors, negative value is written to fd.
596 * On success: If query produced a result, the result_shmid is written to fd.
597 * Otherwise, zero is written.
598 */
599 static int call_callback(int fd, int query_shmid)
600 {
601 void *query_shm, *result_shm;
602 struct callback_query *cq;
603 struct callback_result *cr;
604 struct osl_object query, result = {.data = NULL};
605 int result_shmid = -1, ret, ret2;
606
607 ret = shm_attach(query_shmid, ATTACH_RW, &query_shm);
608 if (ret < 0)
609 goto out;
610 cq = query_shm;
611 query.data = (char *)query_shm + sizeof(*cq);
612 query.size = cq->query_size;
613 ret = cq->handler(&query, &result);
614 ret2 = shm_detach(query_shm);
615 if (ret2 < 0 && ret >= 0)
616 ret = ret2;
617 if (ret < 0)
618 goto out;
619 ret = 0;
620 if (!result.data || !result.size)
621 goto out;
622 ret = shm_new(result.size + sizeof(struct callback_result));
623 if (ret < 0)
624 goto out;
625 result_shmid = ret;
626 ret = shm_attach(result_shmid, ATTACH_RW, &result_shm);
627 if (ret < 0)
628 goto out;
629 cr = result_shm;
630 cr->result_size = result.size;
631 memcpy(result_shm + sizeof(*cr), result.data, result.size);
632 ret = shm_detach(result_shm);
633 if (ret < 0)
634 goto out;
635 ret = result_shmid;
636 out:
637 free(result.data);
638 ret2 = send_bin_buffer(fd, (char *)&ret, sizeof(int));
639 if (ret < 0 || ret2 < 0) {
640 if (result_shmid >= 0)
641 if (shm_destroy(result_shmid) < 0)
642 PARA_ERROR_LOG("destroy result failed\n");
643 if (ret >= 0)
644 ret = ret2;
645 }
646 return ret;
647 }
648
649 static void command_post_select(struct sched *s, struct task *t)
650 {
651 struct command_task *ct = t->private_data;
652 struct sockaddr_un unix_addr;
653 char buf[sizeof(uint32_t) + sizeof(int)];
654 uint32_t cookie;
655 int query_shmid, fd;
656
657 t->ret = 1;
658 if (!FD_ISSET(ct->fd, &s->rfds))
659 return;
660 t->ret = para_accept(ct->fd, &unix_addr, sizeof(unix_addr));
661 if (t->ret < 0)
662 return;
663 /*
664 * The following errors may be caused by a malicious local user. So do
665 * not return an error in this case as this would terminate para_afs
666 * and para_server.
667 */
668 fd = t->ret;
669 /* FIXME: This is easily dosable (peer doesn't send data) */
670 t->ret = recv_bin_buffer(fd, buf, sizeof(buf));
671 if (t->ret < 0) {
672 PARA_NOTICE_LOG("%s (%d)\n", PARA_STRERROR(-t->ret), t->ret);
673 goto out;
674 }
675 if (t->ret != sizeof(buf)) {
676 PARA_NOTICE_LOG("short read (%d bytes, expected %lu)\n",
677 t->ret, (long unsigned) sizeof(buf));
678 goto out;
679 }
680 cookie = *(uint32_t *)buf;
681 if (cookie != ct->cookie) {
682 PARA_NOTICE_LOG("received invalid cookie(got %u, expected %u)\n",
683 (unsigned)cookie, (unsigned)ct->cookie);
684 goto out;
685 }
686 query_shmid = *(int *)(buf + sizeof(cookie));
687 if (query_shmid < 0) {
688 PARA_WARNING_LOG("received invalid query shmid %d)\n",
689 query_shmid);
690 goto out;
691 }
692 /* Ignore return value: Errors might be ok here. */
693 call_callback(fd, query_shmid);
694 out:
695 t->ret = 1;
696 close(fd);
697 }
698
699 static void register_command_task(uint32_t cookie)
700 {
701 struct command_task *ct = &command_task_struct;
702 ct->fd = setup_command_socket_or_die();
703 ct->cookie = cookie;
704
705 ct->task.pre_select = command_pre_select;
706 ct->task.post_select = command_post_select;
707 ct->task.private_data = ct;
708 sprintf(ct->task.status, "command task");
709 register_task(&ct->task);
710 }
711
712 void register_tasks(uint32_t cookie)
713 {
714 register_signal_task();
715 register_command_task(cookie);
716 }
717
718 static char *database_dir;
719
720 static int make_database_dir(void)
721 {
722 int ret;
723
724 if (!database_dir) {
725 if (conf.afs_database_dir_given)
726 database_dir = para_strdup(conf.afs_database_dir_arg);
727 else {
728 char *home = para_homedir();
729 database_dir = make_message(
730 "%s/.paraslash/afs_database", home);
731 free(home);
732 }
733 }
734 PARA_INFO_LOG("afs_database dir %s\n", database_dir);
735 ret = para_mkdir(database_dir, 0777);
736 if (ret >= 0 || ret == -E_EXIST)
737 return 1;
738 free(database_dir);
739 database_dir = NULL;
740 return ret;
741 }
742
743 static int open_afs_tables(void)
744 {
745 int ret = make_database_dir();
746
747 if (ret < 0)
748 return ret;
749 ret = attribute_init(&afs_tables[TBLNUM_ATTRIBUTES], database_dir);
750 if (ret < 0)
751 return ret;
752 ret = moods_init(&afs_tables[TBLNUM_MOODS], database_dir);
753 if (ret < 0)
754 goto moods_init_error;
755 ret = playlists_init(&afs_tables[TBLNUM_PLAYLIST], database_dir);
756 if (ret < 0)
757 goto playlists_init_error;
758 ret = lyrics_init(&afs_tables[TBLNUM_LYRICS], database_dir);
759 if (ret < 0)
760 goto lyrics_init_error;
761 ret = images_init(&afs_tables[TBLNUM_IMAGES], database_dir);
762 if (ret < 0)
763 goto images_init_error;
764 ret = score_init(&afs_tables[TBLNUM_SCORES], database_dir);
765 if (ret < 0)
766 goto score_init_error;
767 ret = aft_init(&afs_tables[TBLNUM_AUDIO_FILES], database_dir);
768 if (ret < 0)
769 goto aft_init_error;
770 return 1;
771
772 aft_init_error:
773 score_shutdown(OSL_MARK_CLEAN);
774 score_init_error:
775 images_shutdown(OSL_MARK_CLEAN);
776 images_init_error:
777 lyrics_shutdown(OSL_MARK_CLEAN);
778 lyrics_init_error:
779 playlists_shutdown(OSL_MARK_CLEAN);
780 playlists_init_error:
781 moods_shutdown(OSL_MARK_CLEAN);
782 moods_init_error:
783 attribute_shutdown(OSL_MARK_CLEAN);
784 return ret;
785 }
786
787 __noreturn int afs_init(uint32_t cookie, int socket_fd)
788 {
789 enum play_mode current_play_mode;
790 struct sched s;
791 int ret = open_afs_tables();
792
793 if (ret < 0) {
794 PARA_EMERG_LOG("%s\n", PARA_STRERROR(-ret));
795 exit(EXIT_FAILURE);
796 }
797 server_socket = socket_fd;
798 PARA_INFO_LOG("server_socket: %d, afs_socket_cookie: %u\n",
799 server_socket, (unsigned) cookie);
800 current_play_mode = init_admissible_files();
801 register_tasks(cookie);
802 s.default_timeout.tv_sec = 0;
803 s.default_timeout.tv_usec = 99 * 1000;
804 ret = sched(&s);
805 if (ret < 0)
806 PARA_EMERG_LOG("%s\n", PARA_STRERROR(-ret));
807 close_afs_tables(OSL_MARK_CLEAN);
808 exit(EXIT_FAILURE);
809 }
810
811 static int create_tables_callback(const struct osl_object *query,
812 __a_unused struct osl_object *result)
813 {
814 uint32_t table_mask = *(uint32_t *)query->data;
815 int i, ret;
816
817 close_afs_tables(OSL_MARK_CLEAN);
818 for (i = 0; i < NUM_AFS_TABLES; i++) {
819 struct table_info *ti = afs_tables + i;
820
821 if (ti->flags & TBLFLAG_SKIP_CREATE)
822 continue;
823 if (!(table_mask & (1 << i)))
824 continue;
825 ret = osl_create_table(ti->desc);
826 if (ret < 0)
827 return ret;
828 }
829 ret = open_afs_tables();
830 return ret < 0? ret: 0;
831 }
832
833 int com_init(int fd, int argc, char * const * const argv)
834 {
835 int i, j, ret;
836 uint32_t table_mask = (1 << (NUM_AFS_TABLES + 1)) - 1;
837 struct osl_object query = {.data = &table_mask,
838 .size = sizeof(table_mask)};
839
840 if (argc != 1) {
841 table_mask = 0;
842 for (i = 1; i < argc; i++) {
843 for (j = 0; j < NUM_AFS_TABLES; j++) {
844 struct table_info *ti = afs_tables + j;
845
846 if (ti->flags & TBLFLAG_SKIP_CREATE)
847 continue;
848 if (strcmp(argv[i], ti->desc->name))
849 continue;
850 table_mask |= (1 << j);
851 break;
852 }
853 if (j == NUM_AFS_TABLES)
854 return -E_BAD_TABLE_NAME;
855 }
856 }
857 ret = send_callback_request(create_tables_callback, &query, NULL);
858 if (ret < 0)
859 return ret;
860 return send_va_buffer(fd, "successfully created afs table(s)\n");
861 }