2 * Copyright (C) 2007 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file afs.c Paraslash's audio file selector. */
11 #include "server.cmdline.h"
17 #include <dirent.h> /* readdir() */
28 /** The osl tables used by afs. \sa blob.c. */
30 /** Contains audio file information. See aft.c. */
32 /** The table for the paraslash attributes. See attribute.c. */
35 * Paraslash's scoring system is based on Gaussian normal
36 * distributions, and the relevant data is stored in the rbtrees of an
37 * osl table containing only volatile columns. See score.c for
42 * A standard blob table containing the mood definitions. For details
46 /** A blob table containing lyrics on a per-song basis. */
48 /** Another blob table for images (for example album cover art). */
50 /** Yet another blob table for storing standard playlists. */
52 /** How many tables are in use? */
56 static struct afs_table afs_tables
[NUM_AFS_TABLES
] = {
57 [TBLNUM_AUDIO_FILES
] = {.init
= aft_init
},
58 [TBLNUM_ATTRIBUTES
] = {.init
= attribute_init
},
59 [TBLNUM_SCORES
] = {.init
= score_init
},
60 [TBLNUM_MOODS
] = {.init
= moods_init
},
61 [TBLNUM_LYRICS
] = {.init
= lyrics_init
},
62 [TBLNUM_IMAGES
] = {.init
= images_init
},
63 [TBLNUM_PLAYLIST
] = {.init
= playlists_init
},
67 /** The file descriptor for the local socket. */
70 * Value sent by the command handlers to identify themselves as
71 * children of the running para_server.
74 /** The associated task structure. */
79 * A random number used to "authenticate" the connection.
81 * para_server picks this number by random before forking the afs process. The
82 * command handlers write this number together with the id of the shared memory
83 * area containing the query. This way, a malicious local user has to know this
84 * number to be able to cause the afs process to crash by sending fake queries.
86 extern uint32_t afs_socket_cookie
;
89 * Struct to let command handlers execute a callback in afs context.
91 * Commands that need to change the state of afs can't change the relevant data
92 * structures directly because commands are executed in a child process, i.e.
93 * they get their own virtual address space.
95 * This structure is used by \p send_callback_request() (executed from handler
96 * context) in order to let the afs process call the specified function. An
97 * instance of that structure is written to a shared memory area together with
98 * the arguments to the callback function. The identifier of the shared memory
99 * area is written to the command socket.
101 * The afs process accepts connections on the command socket and reads the
102 * shared memory id, attaches the corresponing area, calls the given handler to
103 * perform the desired action and to optionally compute a result.
105 * The result and a \p callback_result structure is then written to another
106 * shared memory area. The identifier for that area is written to the handler's
107 * command socket, so that the handler process can read the id, attach the
108 * shared memory area and use the result.
110 * \sa struct callback_result.
112 struct callback_query
{
113 /** The function to be called. */
114 callback_function
*handler
;
115 /** The number of bytes of the query */
120 * Structure embedded in the result of a callback.
122 * If the callback produced a result, an instance of that structure is embeeded
123 * into the shared memory area holding the result, mainly to let the command
124 * handler know the size of the result.
126 * \sa struct callback_query.
128 struct callback_result
{
129 /** The number of bytes of the result. */
134 * Ask the afs process to call a given function.
136 * \param f The function to be called.
137 * \param query Pointer to arbitrary data for the callback.
138 * \param result Callback result will be stored here.
140 * This function creates a shared memory area, copies the buffer pointed to by
141 * \a buf to that area and notifies the afs process that \a f should be
144 * \return Negative, on errors, the return value of the callback function
147 * \sa send_option_arg_callback_request(), send_standard_callback_request().
149 int send_callback_request(callback_function
*f
, struct osl_object
*query
,
150 struct osl_object
*result
)
152 struct callback_query
*cq
;
153 struct callback_result
*cr
;
154 int ret
, fd
= -1, query_shmid
, result_shmid
;
155 void *query_shm
, *result_shm
;
156 char buf
[sizeof(afs_socket_cookie
) + sizeof(int)];
157 struct sockaddr_un unix_addr
;
158 size_t query_shm_size
= sizeof(*cq
);
161 query_shm_size
+= query
->size
;
162 ret
= shm_new(query_shm_size
);
166 ret
= shm_attach(query_shmid
, ATTACH_RW
, &query_shm
);
171 cq
->query_size
= query_shm_size
- sizeof(*cq
);
174 memcpy(query_shm
+ sizeof(*cq
), query
->data
, query
->size
);
175 ret
= shm_detach(query_shm
);
179 *(uint32_t *) buf
= afs_socket_cookie
;
180 *(int *) (buf
+ sizeof(afs_socket_cookie
)) = query_shmid
;
182 ret
= get_stream_socket(PF_UNIX
);
186 ret
= init_unix_addr(&unix_addr
, conf
.afs_socket_arg
);
189 ret
= PARA_CONNECT(fd
, &unix_addr
);
192 ret
= send_bin_buffer(fd
, buf
, sizeof(buf
));
195 ret
= recv_bin_buffer(fd
, buf
, sizeof(buf
));
198 if (ret
!= sizeof(int)) {
206 ret
= shm_attach(result_shmid
, ATTACH_RO
, &result_shm
);
210 result
->size
= cr
->result_size
;
211 result
->data
= para_malloc(result
->size
);
212 memcpy(result
->data
, result_shm
+ sizeof(*cr
), result
->size
);
213 ret
= shm_detach(result_shm
);
215 PARA_ERROR_LOG("can not detach result\n");
217 PARA_ERROR_LOG("attach result failed: %d\n", ret
);
218 if (shm_destroy(result_shmid
) < 0)
219 PARA_ERROR_LOG("destroy result failed\n");
222 if (shm_destroy(query_shmid
) < 0)
223 PARA_ERROR_LOG("%s\n", "shm destroy error");
226 // PARA_DEBUG_LOG("callback_ret: %d\n", ret);
231 * Send a callback request passing an options structure and an argument vector.
233 * \param options pointer to an arbitrary data structure.
234 * \param argc Argument count.
235 * \param argv Standard argument vector.
236 * \param f The callback function.
237 * \param result The result of the query is stored here.
239 * Some commands have a couple of options that are parsed in child context for
240 * syntactic correctness and are stored in a special options structure for that
241 * command. This function allows to pass such a structure together with a list
242 * of further arguments (often a list of audio files) to the parent process.
244 * \sa send_standard_callback_request(), send_callback_request().
246 int send_option_arg_callback_request(struct osl_object
*options
,
247 int argc
, char * const * const argv
, callback_function
*f
,
248 struct osl_object
*result
)
252 struct osl_object query
= {.size
= options
? options
->size
: 0};
254 for (i
= 0; i
< argc
; i
++)
255 query
.size
+= strlen(argv
[i
]) + 1;
256 query
.data
= para_malloc(query
.size
);
259 memcpy(query
.data
, options
->data
, options
->size
);
262 for (i
= 0; i
< argc
; i
++) {
263 strcpy(p
, argv
[i
]); /* OK */
264 p
+= strlen(argv
[i
]) + 1;
266 ret
= send_callback_request(f
, &query
, result
);
272 * Send a callback request with an argument vector only.
274 * \param argc The same meaning as in send_option_arg_callback_request().
275 * \param argv The same meaning as in send_option_arg_callback_request().
276 * \param f The same meaning as in send_option_arg_callback_request().
277 * \param result The same meaning as in send_option_arg_callback_request().
279 * This is similar to send_option_arg_callback_request(), but no options buffer
280 * is passed to the parent process.
282 * \return The return value of the underlying call to
283 * send_option_arg_callback_request().
285 int send_standard_callback_request(int argc
, char * const * const argv
,
286 callback_function
*f
, struct osl_object
*result
)
288 return send_option_arg_callback_request(NULL
, argc
, argv
, f
, result
);
291 static int action_if_pattern_matches(struct osl_row
*row
, void *data
)
293 struct pattern_match_data
*pmd
= data
;
294 struct osl_object name_obj
;
295 const char *p
, *name
;
296 int ret
= osl_get_object(pmd
->table
, row
, pmd
->match_col_num
, &name_obj
);
297 const char *pattern_txt
= (const char *)pmd
->patterns
.data
;
301 name
= (char *)name_obj
.data
;
302 if ((!name
|| !*name
) && (pmd
->pm_flags
& PM_SKIP_EMPTY_NAME
))
304 if (!pmd
->patterns
.size
&& (pmd
->pm_flags
& PM_NO_PATTERN_MATCHES_EVERYTHING
))
305 return pmd
->action(pmd
->table
, row
, name
, pmd
->data
);
306 for (p
= pattern_txt
; p
< pattern_txt
+ pmd
->patterns
.size
;
307 p
+= strlen(p
) + 1) {
308 ret
= fnmatch(p
, name
, pmd
->fnmatch_flags
);
309 if (ret
== FNM_NOMATCH
)
313 return pmd
->action(pmd
->table
, row
, name
, pmd
->data
);
319 * Execute the given function for each matching row.
321 * \param pmd Describes what to match and how.
323 * \return The return value of the underlying call to osl_rbtree_loop()
324 * or osl_rbtree_loop_reverse().
326 int for_each_matching_row(struct pattern_match_data
*pmd
)
328 if (pmd
->pm_flags
& PM_REVERSE_LOOP
)
329 return osl_rbtree_loop_reverse(pmd
->table
, pmd
->loop_col_num
, pmd
,
330 action_if_pattern_matches
);
331 return osl_rbtree_loop(pmd
->table
, pmd
->loop_col_num
, pmd
,
332 action_if_pattern_matches
);
336 * Compare two osl objects of string type.
338 * \param obj1 Pointer to the first object.
339 * \param obj2 Pointer to the second object.
341 * In any case, only \p MIN(obj1->size, obj2->size) characters of each string
342 * are taken into account.
344 * \return It returns an integer less than, equal to, or greater than zero if
345 * \a obj1 is found, respectively, to be less than, to match, or be greater than
348 * \sa strcmp(3), strncmp(3), osl_compare_func.
350 int string_compare(const struct osl_object
*obj1
, const struct osl_object
*obj2
)
352 const char *str1
= (const char *)obj1
->data
;
353 const char *str2
= (const char *)obj2
->data
;
354 return strncmp(str1
, str2
, PARA_MIN(obj1
->size
, obj2
->size
));
358 * write input from fd to dynamically allocated buffer,
359 * but maximal max_size byte.
361 static int fd2buf(int fd
, unsigned max_size
, struct osl_object
*obj
)
363 const size_t chunk_size
= 1024;
364 size_t size
= 2048, received
= 0;
366 char *buf
= para_malloc(size
);
369 ret
= recv_bin_buffer(fd
, buf
+ received
, chunk_size
);
373 if (received
+ chunk_size
>= size
) {
375 ret
= -E_INPUT_TOO_LARGE
;
378 buf
= para_realloc(buf
, size
);
382 obj
->size
= received
;
389 * Read data from a file descriptor, and send it to the afs process.
391 * \param fd File descriptor to read data from.
392 * \param arg_obj Pointer to the arguments to \a f.
393 * \param f The callback function.
394 * \param max_len Don't read more than that many bytes from stdin.
395 * \param result The result of the query is stored here.
397 * This function is used by commands that wish to let para_server store
398 * arbitrary data specified by the user (for instance the add_blob family of
399 * commands). First, at most \a max_len bytes are read from \a fd, the result
400 * is concatenated with the buffer given by \a arg_obj, and the combined buffer
401 * is made available to the parent process via shared memory.
403 * \return Negative on errors, the return value of the underlying call to
404 * send_callback_request() otherwise.
406 int stdin_command(int fd
, struct osl_object
*arg_obj
, callback_function
*f
,
407 unsigned max_len
, struct osl_object
*result
)
409 struct osl_object query
, stdin_obj
;
412 ret
= send_buffer(fd
, AWAITING_DATA_MSG
);
415 ret
= fd2buf(fd
, max_len
, &stdin_obj
);
418 query
.size
= arg_obj
->size
+ stdin_obj
.size
;
419 query
.data
= para_malloc(query
.size
);
420 memcpy(query
.data
, arg_obj
->data
, arg_obj
->size
);
421 memcpy((char *)query
.data
+ arg_obj
->size
, stdin_obj
.data
, stdin_obj
.size
);
422 free(stdin_obj
.data
);
423 ret
= send_callback_request(f
, &query
, result
);
429 * Open the audio file with highest score.
431 * \param afd Audio file data is returned here.
433 * This stores all information for streaming the "best" audio file
434 * in the \a afd structure.
436 * \return Positive on success, negative on errors.
438 * \sa close_audio_file(), open_and_update_audio_file().
440 int open_next_audio_file(struct audio_file_data
*afd
)
442 struct osl_row
*aft_row
;
445 ret
= score_get_best(&aft_row
, &afd
->score
);
448 ret
= open_and_update_audio_file(aft_row
, afd
);
455 * Free all resources which were allocated by open_next_audio_file().
457 * \param afd The structure previously filled in by open_next_audio_file().
459 * \return The return value of the underlying call to para_munmap().
461 * \sa open_next_audio_file().
463 int close_audio_file(struct audio_file_data
*afd
)
465 free(afd
->afhi
.chunk_table
);
466 return para_munmap(afd
->map
.data
, afd
->map
.size
);
469 static enum play_mode
init_admissible_files(void)
472 char *arg
= conf
.afs_initial_mode_arg
;
474 if (conf
.afs_initial_mode_given
) {
475 if (!strncmp(arg
, "p:", 2)) {
476 ret
= playlist_open(arg
+ 2);
478 return PLAY_MODE_PLAYLIST
;
481 if (!strncmp(arg
, "m:", 2)) {
482 ret
= change_current_mood(arg
+ 2);
484 return PLAY_MODE_MOOD
;
487 PARA_ERROR_LOG("bad afs initial mode arg: %s\n", arg
);
491 PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret
));
492 PARA_NOTICE_LOG("defaulting to dummy mood\n");
493 change_current_mood(""); /* always successful */
494 return PLAY_MODE_MOOD
;
497 static int setup_command_socket_or_die(void)
500 char *socket_name
= conf
.afs_socket_arg
;
501 struct sockaddr_un unix_addr
;
504 ret
= create_local_socket(socket_name
, &unix_addr
,
505 S_IRUSR
| S_IWUSR
| S_IRGRP
| S_IWGRP
| S_IWOTH
);
507 PARA_EMERG_LOG("%s: %s\n", PARA_STRERROR(-ret
), socket_name
);
510 if (listen(ret
, 5) < 0) {
511 PARA_EMERG_LOG("%s", "can not listen on socket\n");
514 PARA_INFO_LOG("listening on command socket %s (fd %d)\n", socket_name
,
519 static void close_afs_tables(void)
522 PARA_NOTICE_LOG("closing afs_tables\n");
523 for (i
= 0; i
< NUM_AFS_TABLES
; i
++)
524 afs_tables
[i
].close();
527 static char *database_dir
;
529 static void get_database_dir(void)
532 if (conf
.afs_database_dir_given
)
533 database_dir
= para_strdup(conf
.afs_database_dir_arg
);
535 char *home
= para_homedir();
536 database_dir
= make_message(
537 "%s/.paraslash/afs_database", home
);
541 PARA_INFO_LOG("afs_database dir %s\n", database_dir
);
544 static int make_database_dir(void)
549 ret
= para_mkdir(database_dir
, 0777);
550 if (ret
>= 0 || is_errno(-ret
, EEXIST
))
555 static int open_afs_tables(void)
560 for (i
= 0; i
< NUM_AFS_TABLES
; i
++) {
561 ret
= afs_tables
[i
].open(database_dir
);
564 PARA_ERROR_LOG("%s init: %s\n", afs_tables
[i
].name
,
565 PARA_STRERROR(-ret
));
570 afs_tables
[i
].close();
575 static int server_socket
;
576 static struct command_task command_task_struct
;
577 static struct signal_task signal_task_struct
;
579 static void unregister_tasks(void)
581 unregister_task(&command_task_struct
.task
);
582 unregister_task(&signal_task_struct
.task
);
585 static void signal_pre_select(struct sched
*s
, struct task
*t
)
587 struct signal_task
*st
= t
->private_data
;
589 para_fd_set(st
->fd
, &s
->rfds
, &s
->max_fileno
);
592 static void signal_post_select(struct sched
*s
, struct task
*t
)
594 struct signal_task
*st
= t
->private_data
;
596 if (!FD_ISSET(st
->fd
, &s
->rfds
))
598 st
->signum
= para_next_signal();
600 if (st
->signum
== SIGUSR1
)
601 return; /* ignore SIGUSR1 */
602 if (st
->signum
== SIGHUP
) {
604 t
->ret
= open_afs_tables();
607 PARA_NOTICE_LOG("caught signal %d\n", st
->signum
);
608 t
->ret
= -E_AFS_SIGNAL
;
612 static void register_signal_task(void)
614 struct signal_task
*st
= &signal_task_struct
;
615 st
->fd
= para_signal_init();
616 PARA_INFO_LOG("signal pipe: fd %d\n", st
->fd
);
617 para_install_sighandler(SIGINT
);
618 para_install_sighandler(SIGTERM
);
619 para_install_sighandler(SIGPIPE
);
620 para_install_sighandler(SIGHUP
);
622 st
->task
.pre_select
= signal_pre_select
;
623 st
->task
.post_select
= signal_post_select
;
624 st
->task
.private_data
= st
;
625 sprintf(st
->task
.status
, "signal task");
626 register_task(&st
->task
);
629 static struct list_head afs_client_list
;
632 struct list_head node
;
634 struct timeval connect_time
;
637 static void command_pre_select(struct sched
*s
, struct task
*t
)
639 struct command_task
*ct
= t
->private_data
;
640 struct afs_client
*client
;
642 para_fd_set(ct
->fd
, &s
->rfds
, &s
->max_fileno
);
643 list_for_each_entry(client
, &afs_client_list
, node
)
644 para_fd_set(client
->fd
, &s
->rfds
, &s
->max_fileno
);
649 * On errors, negative value is written to fd.
650 * On success: If query produced a result, the result_shmid is written to fd.
651 * Otherwise, zero is written.
653 static int call_callback(int fd
, int query_shmid
)
655 void *query_shm
, *result_shm
;
656 struct callback_query
*cq
;
657 struct callback_result
*cr
;
658 struct osl_object query
, result
= {.data
= NULL
};
659 int result_shmid
= -1, ret
, ret2
;
661 ret
= shm_attach(query_shmid
, ATTACH_RW
, &query_shm
);
665 query
.data
= (char *)query_shm
+ sizeof(*cq
);
666 query
.size
= cq
->query_size
;
667 ret
= cq
->handler(&query
, &result
);
668 ret2
= shm_detach(query_shm
);
669 if (ret2
< 0 && ret
>= 0)
674 if (!result
.data
|| !result
.size
)
676 ret
= shm_new(result
.size
+ sizeof(struct callback_result
));
680 ret
= shm_attach(result_shmid
, ATTACH_RW
, &result_shm
);
684 cr
->result_size
= result
.size
;
685 memcpy(result_shm
+ sizeof(*cr
), result
.data
, result
.size
);
686 ret
= shm_detach(result_shm
);
692 ret2
= send_bin_buffer(fd
, (char *)&ret
, sizeof(int));
693 if (ret
< 0 || ret2
< 0) {
694 if (result_shmid
>= 0)
695 if (shm_destroy(result_shmid
) < 0)
696 PARA_ERROR_LOG("destroy result failed\n");
703 static void execute_afs_command(int fd
, uint32_t expected_cookie
)
707 char buf
[sizeof(cookie
) + sizeof(query_shmid
)];
708 int ret
= recv_bin_buffer(fd
, buf
, sizeof(buf
));
711 PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-ret
));
714 if (ret
!= sizeof(buf
)) {
715 PARA_NOTICE_LOG("short read (%d bytes, expected %lu)\n",
716 ret
, (long unsigned) sizeof(buf
));
719 cookie
= *(uint32_t *)buf
;
720 if (cookie
!= expected_cookie
) {
721 PARA_NOTICE_LOG("received invalid cookie(got %u, expected %u)\n",
722 (unsigned)cookie
, (unsigned)expected_cookie
);
725 query_shmid
= *(int *)(buf
+ sizeof(cookie
));
726 if (query_shmid
< 0) {
727 PARA_WARNING_LOG("received invalid query shmid %d)\n",
731 /* Ignore return value: Errors might be OK here. */
732 call_callback(fd
, query_shmid
);
735 /** Shutdown connection if query has not arrived until this many seconds. */
736 #define AFS_CLIENT_TIMEOUT 3
738 static void command_post_select(struct sched
*s
, struct task
*t
)
740 struct command_task
*ct
= t
->private_data
;
741 struct sockaddr_un unix_addr
;
742 struct afs_client
*client
, *tmp
;
744 /* First, check the list of connected clients. */
745 list_for_each_entry_safe(client
, tmp
, &afs_client_list
, node
) {
746 if (FD_ISSET(client
->fd
, &s
->rfds
))
747 execute_afs_command(client
->fd
, ct
->cookie
);
748 else { /* prevent bogus connection flooding */
750 tv_diff(now
, &client
->connect_time
, &diff
);
751 if (diff
.tv_sec
< AFS_CLIENT_TIMEOUT
)
753 PARA_WARNING_LOG("connection timeout\n");
756 list_del(&client
->node
);
759 /* Next, accept connections on the local socket. */
760 if (!FD_ISSET(ct
->fd
, &s
->rfds
))
762 t
->ret
= para_accept(ct
->fd
, &unix_addr
, sizeof(unix_addr
));
764 PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-t
->ret
));
767 client
= para_malloc(sizeof(*client
));
769 client
->connect_time
= *now
;
770 para_list_add(&client
->node
, &afs_client_list
);
775 static void register_command_task(uint32_t cookie
)
777 struct command_task
*ct
= &command_task_struct
;
778 ct
->fd
= setup_command_socket_or_die();
781 ct
->task
.pre_select
= command_pre_select
;
782 ct
->task
.post_select
= command_post_select
;
783 ct
->task
.private_data
= ct
;
784 sprintf(ct
->task
.status
, "command task");
785 register_task(&ct
->task
);
788 static void register_tasks(uint32_t cookie
)
790 register_signal_task();
791 register_command_task(cookie
);
795 * Initialize the audio file selector process.
797 * \param cookie The value used for "authentication".
798 * \param socket_fd File descriptor used for communication with the server.
800 __noreturn
void afs_init(uint32_t cookie
, int socket_fd
)
802 enum play_mode current_play_mode
;
806 INIT_LIST_HEAD(&afs_client_list
);
807 for (i
= 0; i
< NUM_AFS_TABLES
; i
++)
808 afs_tables
[i
].init(&afs_tables
[i
]);
809 ret
= open_afs_tables();
812 PARA_EMERG_LOG("%s\n", PARA_STRERROR(-ret
));
815 server_socket
= socket_fd
;
816 ret
= mark_fd_nonblock(server_socket
);
819 PARA_INFO_LOG("server_socket: %d, afs_socket_cookie: %u\n",
820 server_socket
, (unsigned) cookie
);
821 current_play_mode
= init_admissible_files();
822 register_tasks(cookie
);
823 s
.default_timeout
.tv_sec
= 0;
824 s
.default_timeout
.tv_usec
= 99 * 1000;
827 PARA_EMERG_LOG("%s\n", PARA_STRERROR(-ret
));
832 static int create_tables_callback(const struct osl_object
*query
,
833 __a_unused
struct osl_object
*result
)
835 uint32_t table_mask
= *(uint32_t *)query
->data
;
839 for (i
= 0; i
< NUM_AFS_TABLES
; i
++) {
840 struct afs_table
*t
= &afs_tables
[i
];
842 if (!(table_mask
& (1 << i
)))
846 ret
= t
->create(database_dir
);
850 ret
= open_afs_tables();
851 return ret
< 0? ret
: 0;
854 int com_init(int fd
, int argc
, char * const * const argv
)
857 uint32_t table_mask
= (1 << (NUM_AFS_TABLES
+ 1)) - 1;
858 struct osl_object query
= {.data
= &table_mask
,
859 .size
= sizeof(table_mask
)};
861 ret
= make_database_dir();
866 for (i
= 1; i
< argc
; i
++) {
867 for (j
= 0; j
< NUM_AFS_TABLES
; j
++) {
868 struct afs_table
*t
= &afs_tables
[j
];
870 if (strcmp(argv
[i
], t
->name
))
872 table_mask
|= (1 << j
);
875 if (j
== NUM_AFS_TABLES
)
876 return -E_BAD_TABLE_NAME
;
879 ret
= send_callback_request(create_tables_callback
, &query
, NULL
);
882 return send_va_buffer(fd
, "successfully created afs table(s)\n");
886 * Flags for the check command.
890 enum com_check_flags
{
891 /** Check the audio file table. */
893 /** Check the mood table. */
895 /** Check the playlist table. */
899 int com_check(int fd
, int argc
, char * const * const argv
)
903 struct osl_object result
;
905 for (i
= 1; i
< argc
; i
++) {
906 const char *arg
= argv
[i
];
909 if (!strcmp(arg
, "--")) {
913 if (!strcmp(arg
, "-a")) {
917 if (!strcmp(arg
, "-p")) {
918 flags
|= CHECK_PLAYLISTS
;
921 if (!strcmp(arg
, "-m")) {
922 flags
|= CHECK_MOODS
;
925 return -E_AFS_SYNTAX
;
928 return -E_AFS_SYNTAX
;
931 if (flags
& CHECK_AFT
) {
932 ret
= send_callback_request(aft_check_callback
, NULL
, &result
);
936 ret
= send_buffer(fd
, (char *) result
.data
);
942 if (flags
& CHECK_PLAYLISTS
) {
943 ret
= send_callback_request(playlist_check_callback
, NULL
, &result
);
947 ret
= send_buffer(fd
, (char *) result
.data
);
953 if (flags
& CHECK_MOODS
) {
954 ret
= send_callback_request(mood_check_callback
, NULL
, &result
);
958 ret
= send_buffer(fd
, (char *) result
.data
);