com_touch(): Return negative on errors
[paraslash.git] / aft.c
1 /*
2 * Copyright (C) 2007 Andre Noll <maan@tuebingen.mpg.de>
3 *
4 * Licensed under the GPL v2. For licencing details see COPYING.
5 */
6
7 /** \file aft.c Audio file table functions. */
8
9 #include <regex.h>
10 #include <sys/mman.h>
11 #include <fnmatch.h>
12 #include <sys/shm.h>
13 #include <osl.h>
14
15 #include "para.h"
16 #include "error.h"
17 #include "crypt.h"
18 #include "string.h"
19 #include "afh.h"
20 #include "afs.h"
21 #include "fd.h"
22 #include "ipc.h"
23 #include "portable_io.h"
24 #include "sideband.h"
25 #include "command.h"
26
27 static struct osl_table *audio_file_table;
28 static char *status_items;
29 static char *parser_friendly_status_items;
30
31 /** The different sorting methods of the ls command. */
32 enum ls_sorting_method {
33 /** -sp (default) */
34 LS_SORT_BY_PATH,
35 /** -ss */
36 LS_SORT_BY_SCORE,
37 /** -sl */
38 LS_SORT_BY_LAST_PLAYED,
39 /** -sn */
40 LS_SORT_BY_NUM_PLAYED,
41 /** -sf */
42 LS_SORT_BY_FREQUENCY,
43 /** -sc */
44 LS_SORT_BY_CHANNELS,
45 /** -si */
46 LS_SORT_BY_IMAGE_ID,
47 /** -sy */
48 LS_SORT_BY_LYRICS_ID,
49 /** -sb */
50 LS_SORT_BY_BITRATE,
51 /** -sd */
52 LS_SORT_BY_DURATION,
53 /** -sa */
54 LS_SORT_BY_AUDIO_FORMAT,
55 /** -sh */
56 LS_SORT_BY_HASH,
57 };
58
59 /** The different listing modes of the ls command. */
60 enum ls_listing_mode {
61 /** Default listing mode. */
62 LS_MODE_SHORT,
63 /** -l or -ll */
64 LS_MODE_LONG,
65 /** -lv */
66 LS_MODE_VERBOSE,
67 /** -lm */
68 LS_MODE_MBOX,
69 /** -lc */
70 LS_MODE_CHUNKS,
71 /** -lp */
72 LS_MODE_PARSER,
73 };
74
75 /* Data about one audio file. Needed for ls and stat output. */
76 struct ls_data {
77 /* Usual audio format handler information. */
78 struct afh_info afhi;
79 /* Audio file selector information. */
80 struct afs_info afsi;
81 /* The full path of the audio file. */
82 char *path;
83 /* The score value (if -a was given). */
84 long score;
85 /* The hash value of the audio file data. */
86 unsigned char *hash;
87 };
88
89 /** The flags accepted by the ls command. */
90 enum ls_flags {
91 /** -p */
92 LS_FLAG_FULL_PATH = 1,
93 /** -a */
94 LS_FLAG_ADMISSIBLE_ONLY = 2,
95 /** -r */
96 LS_FLAG_REVERSE = 4,
97 /** -d */
98 LS_FLAG_UNIXDATE = 8,
99 };
100
101 /**
102 * The size of the individual output fields of the ls command.
103 *
104 * These depend on the content being listed. For example, if each listed file
105 * is shorter than an hour, the duration format is set to mm:ss. Otherwise it
106 * is set to hh:mm:ss.
107 */
108 struct ls_widths {
109 /** size of the score field. */
110 unsigned short score_width;
111 /** size of the image id field. */
112 unsigned short image_id_width;
113 /** size of the lyrics id field. */
114 unsigned short lyrics_id_width;
115 /** size of the bitrate field. */
116 unsigned short bitrate_width;
117 /** size of the frequency field. */
118 unsigned short frequency_width;
119 /** size of the duration field. */
120 unsigned short duration_width;
121 /** size of the num played field. */
122 unsigned short num_played_width;
123 /** size of the amp field. */
124 unsigned short amp_width;
125 /** size of the audio format field. */
126 unsigned short audio_format_width;
127 };
128
129 /** Data passed from the ls command handler to its callback function. */
130 struct ls_options {
131 /** The given command line flags. */
132 unsigned flags;
133 /** The sorting method given at the command line. */
134 enum ls_sorting_method sorting;
135 /** The given listing mode (short, long, verbose, mbox). */
136 enum ls_listing_mode mode;
137 /** The arguments passed to the ls command. */
138 char **patterns;
139 /** Number of non-option arguments. */
140 int num_patterns;
141 /** Used for long listing mode to align the output fields. */
142 struct ls_widths widths;
143 /** Size of the \a data array. */
144 uint32_t array_size;
145 /** Number of used entries in the data array. */
146 uint32_t num_matching_paths;
147 /** Array of matching entries. */
148 struct ls_data *data;
149 /** Used to sort the array. */
150 struct ls_data **data_ptr;
151 };
152
153 /**
154 * Describes the layout of the mmapped-afs info struct.
155 *
156 * \sa struct afs_info.
157 */
158 enum afsi_offsets {
159 /** Where .last_played is stored. */
160 AFSI_LAST_PLAYED_OFFSET = 0,
161 /** Storage position of the attributes bitmap. */
162 AFSI_ATTRIBUTES_OFFSET = 8,
163 /** Storage position of the .num_played field. */
164 AFSI_NUM_PLAYED_OFFSET = 16,
165 /** Storage position of the .image_id field. */
166 AFSI_IMAGE_ID_OFFSET = 20,
167 /** Storage position of the .lyrics_id field. */
168 AFSI_LYRICS_ID_OFFSET = 24,
169 /** Storage position of the .audio_format_id field. */
170 AFSI_AUDIO_FORMAT_ID_OFFSET = 28,
171 /** Storage position of the amplification field. */
172 AFSI_AMP_OFFSET = 29,
173 /** 2 bytes reserved space for future usage. */
174 AFSI_AUDIO_FORMAT_UNUSED_OFFSET = 30,
175 /** On-disk storage space needed. */
176 AFSI_SIZE = 32
177 };
178
179 /*
180 * Convert a struct afs_info to an osl object.
181 *
182 * \param afsi Pointer to the audio file info to be converted.
183 * \param obj Result pointer.
184 *
185 * \sa load_afsi().
186 */
187 static void save_afsi(struct afs_info *afsi, struct osl_object *obj)
188 {
189 char *buf = obj->data;
190
191 write_u64(buf + AFSI_LAST_PLAYED_OFFSET, afsi->last_played);
192 write_u64(buf + AFSI_ATTRIBUTES_OFFSET, afsi->attributes);
193 write_u32(buf + AFSI_NUM_PLAYED_OFFSET, afsi->num_played);
194 write_u32(buf + AFSI_IMAGE_ID_OFFSET, afsi->image_id);
195 write_u32(buf + AFSI_LYRICS_ID_OFFSET, afsi->lyrics_id);
196 write_u8(buf + AFSI_AUDIO_FORMAT_ID_OFFSET,
197 afsi->audio_format_id);
198 write_u8(buf + AFSI_AMP_OFFSET, afsi->amp);
199 memset(buf + AFSI_AUDIO_FORMAT_UNUSED_OFFSET, 0, 2);
200 }
201
202 /*
203 * Get the audio file selector info struct stored in an osl object.
204 *
205 * \param afsi Points to the audio_file info structure to be filled in.
206 * \param obj The osl object holding the data.
207 *
208 * \return Standard.
209 *
210 * \sa save_afsi().
211 */
212 static int load_afsi(struct afs_info *afsi, struct osl_object *obj)
213 {
214 char *buf = obj->data;
215 if (obj->size < AFSI_SIZE)
216 return -E_BAD_AFSI;
217 afsi->last_played = read_u64(buf + AFSI_LAST_PLAYED_OFFSET);
218 afsi->attributes = read_u64(buf + AFSI_ATTRIBUTES_OFFSET);
219 afsi->num_played = read_u32(buf + AFSI_NUM_PLAYED_OFFSET);
220 afsi->image_id = read_u32(buf + AFSI_IMAGE_ID_OFFSET);
221 afsi->lyrics_id = read_u32(buf + AFSI_LYRICS_ID_OFFSET);
222 afsi->audio_format_id = read_u8(buf +
223 AFSI_AUDIO_FORMAT_ID_OFFSET);
224 afsi->amp = read_u8(buf + AFSI_AMP_OFFSET);
225 return 1;
226 }
227
228 /** The columns of the audio file table. */
229 enum audio_file_table_columns {
230 /** The hash on the content of the audio file. */
231 AFTCOL_HASH,
232 /** The full path in the filesystem. */
233 AFTCOL_PATH,
234 /** The audio file selector info. */
235 AFTCOL_AFSI,
236 /** The audio format handler info. */
237 AFTCOL_AFHI,
238 /** The chunk table info and the chunk table of the audio file. */
239 AFTCOL_CHUNKS,
240 /** The number of columns of this table. */
241 NUM_AFT_COLUMNS
242 };
243
244 /**
245 * Compare two osl objects pointing to hash values.
246 *
247 * \param obj1 Pointer to the first hash object.
248 * \param obj2 Pointer to the second hash object.
249 *
250 * \return The values required for an osl compare function.
251 *
252 * \sa osl_compare_func, uint32_compare().
253 */
254 static int aft_hash_compare(const struct osl_object *obj1, const struct osl_object *obj2)
255 {
256 return hash_compare((unsigned char *)obj1->data, (unsigned char *)obj2->data);
257 }
258
259 static struct osl_column_description aft_cols[] = {
260 [AFTCOL_HASH] = {
261 .storage_type = OSL_MAPPED_STORAGE,
262 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE | OSL_UNIQUE,
263 .name = "hash",
264 .compare_function = aft_hash_compare,
265 .data_size = HASH_SIZE
266 },
267 [AFTCOL_PATH] = {
268 .storage_type = OSL_MAPPED_STORAGE,
269 .storage_flags = OSL_RBTREE | OSL_UNIQUE,
270 .name = "path",
271 .compare_function = string_compare,
272 },
273 [AFTCOL_AFSI] = {
274 .storage_type = OSL_MAPPED_STORAGE,
275 .storage_flags = OSL_FIXED_SIZE,
276 .name = "afs_info",
277 .data_size = AFSI_SIZE
278 },
279 [AFTCOL_AFHI] = {
280 .storage_type = OSL_MAPPED_STORAGE,
281 .name = "afh_info",
282 },
283 [AFTCOL_CHUNKS] = {
284 .storage_type = OSL_DISK_STORAGE,
285 .name = "chunks",
286 }
287 };
288
289 static struct osl_table_description audio_file_table_desc = {
290 .name = "audio_files",
291 .num_columns = NUM_AFT_COLUMNS,
292 .flags = OSL_LARGE_TABLE,
293 .column_descriptions = aft_cols
294 };
295
296 /*
297 * Produce a canonicalized absolute pathname.
298 *
299 * Returns one if the resolved path a directory, zero if it is a regular file,
300 * negative on errors.
301 */
302 static int verify_path(const char *orig_path, char **resolved_path)
303 {
304 int ret;
305 char *path = NULL;
306 struct stat statbuf;
307
308 if (*orig_path != '/') /* we only accept absolute paths */
309 goto fail;
310 path = realpath(orig_path, NULL);
311 if (!path)
312 goto fail;
313 if (stat(path, &statbuf) < 0)
314 goto fail;
315 if (S_ISREG(statbuf.st_mode))
316 ret = 0;
317 else if (S_ISDIR(statbuf.st_mode))
318 ret = 1;
319 else
320 goto fail;
321 *resolved_path = path;
322 return ret;
323 fail:
324 *resolved_path = NULL;
325 free(path);
326 return -E_BAD_PATH;
327 }
328
329 /** The on-disk layout of a afhi struct. */
330 enum afhi_offsets {
331 /** Where the number of seconds is stored. */
332 AFHI_SECONDS_TOTAL_OFFSET = 0,
333 /** Position of the bitrate. */
334 AFHI_BITRATE_OFFSET = 4,
335 /** Position of the frequency. */
336 AFHI_FREQUENCY_OFFSET = 8,
337 /** Was: Location of the audio file header. */
338 AFHI_UNUSED1_OFFSET = 12,
339 /* Length of the audio file header. Zero means: No header. */
340 AFHI_HEADER_LEN_OFFSET = 16,
341 /** The total number of chunks (4 bytes). */
342 CHUNKS_TOTAL_OFFSET = 20,
343 /** The length of the audio file header (4 bytes). */
344 HEADER_LEN_OFFSET = 24,
345 /** Was: The start of the audio file header (4 bytes). */
346 AFHI_UNUSED2_OFFSET = 28,
347 /** The seconds part of the chunk time (4 bytes). */
348 CHUNK_TV_TV_SEC_OFFSET = 32,
349 /** The microseconds part of the chunk time (4 bytes). */
350 CHUNK_TV_TV_USEC_OFFSET = 36,
351 /** Number of channels is stored here. (1 byte) */
352 AFHI_CHANNELS_OFFSET = 40,
353 /** The tag info position. */
354 AFHI_INFO_STRING_OFFSET = 41,
355 /** Minimal on-disk size of a valid afhi struct. */
356 MIN_AFHI_SIZE = 47, /* at least 6 null bytes for techinfo/tags */
357 };
358
359 static unsigned sizeof_afhi_buf(const struct afh_info *afhi)
360 {
361 if (!afhi)
362 return 0;
363 return MIN_AFHI_SIZE
364 + strlen(afhi->techinfo)
365 + strlen(afhi->tags.artist)
366 + strlen(afhi->tags.title)
367 + strlen(afhi->tags.year)
368 + strlen(afhi->tags.album)
369 + strlen(afhi->tags.comment);
370 }
371
372 static void save_afhi(struct afh_info *afhi, char *buf)
373 {
374 char *p;
375
376 if (!afhi)
377 return;
378 write_u32(buf + AFHI_SECONDS_TOTAL_OFFSET, afhi->seconds_total);
379 write_u32(buf + AFHI_BITRATE_OFFSET, afhi->bitrate);
380 write_u32(buf + AFHI_FREQUENCY_OFFSET, afhi->frequency);
381 write_u32(buf + AFHI_UNUSED1_OFFSET, 0);
382 write_u32(buf + AFHI_HEADER_LEN_OFFSET, afhi->header_len);
383 write_u8(buf + AFHI_CHANNELS_OFFSET, afhi->channels);
384 write_u32(buf + CHUNKS_TOTAL_OFFSET, afhi->chunks_total);
385 write_u32(buf + HEADER_LEN_OFFSET, afhi->header_len);
386 write_u32(buf + AFHI_UNUSED2_OFFSET, 0);
387 write_u32(buf + CHUNK_TV_TV_SEC_OFFSET, afhi->chunk_tv.tv_sec);
388 write_u32(buf + CHUNK_TV_TV_USEC_OFFSET, afhi->chunk_tv.tv_usec);
389 p = buf + AFHI_INFO_STRING_OFFSET;
390 /* The sprintf's below are OK as our caller made sure that buf is large enough */
391 p += sprintf(p, "%s", afhi->techinfo) + 1;
392 p += sprintf(p, "%s", afhi->tags.artist) + 1;
393 p += sprintf(p, "%s", afhi->tags.title) + 1;
394 p += sprintf(p, "%s", afhi->tags.year) + 1;
395 p += sprintf(p, "%s", afhi->tags.album) + 1;
396 sprintf(p, "%s", afhi->tags.comment);
397 }
398
399 static void load_afhi(const char *buf, struct afh_info *afhi)
400 {
401 afhi->seconds_total = read_u32(buf + AFHI_SECONDS_TOTAL_OFFSET);
402 afhi->bitrate = read_u32(buf + AFHI_BITRATE_OFFSET);
403 afhi->frequency = read_u32(buf + AFHI_FREQUENCY_OFFSET);
404 afhi->header_len = read_u32(buf + AFHI_HEADER_LEN_OFFSET);
405 afhi->channels = read_u8(buf + AFHI_CHANNELS_OFFSET);
406 afhi->chunks_total = read_u32(buf + CHUNKS_TOTAL_OFFSET);
407 afhi->header_len = read_u32(buf + HEADER_LEN_OFFSET);
408 afhi->chunk_tv.tv_sec = read_u32(buf + CHUNK_TV_TV_SEC_OFFSET);
409 afhi->chunk_tv.tv_usec = read_u32(buf + CHUNK_TV_TV_USEC_OFFSET);
410 afhi->techinfo = (char *)buf + AFHI_INFO_STRING_OFFSET;
411 afhi->tags.artist = afhi->techinfo + strlen(afhi->techinfo) + 1;
412 afhi->tags.title = afhi->tags.artist + strlen(afhi->tags.artist) + 1;
413 afhi->tags.year = afhi->tags.title + strlen(afhi->tags.title) + 1;
414 afhi->tags.album = afhi->tags.year + strlen(afhi->tags.year) + 1;
415 afhi->tags.comment = afhi->tags.album + strlen(afhi->tags.album) + 1;
416 }
417
418 static unsigned sizeof_chunk_table(struct afh_info *afhi)
419 {
420 if (!afhi)
421 return 0;
422 return 4 * (afhi->chunks_total + 1);
423 }
424
425 static uint32_t save_chunk_table(struct afh_info *afhi, char *buf)
426 {
427 int i;
428 uint32_t max = 0, old = 0;
429
430 for (i = 0; i <= afhi->chunks_total; i++) {
431 uint32_t val = afhi->chunk_table[i];
432 write_u32(buf + 4 * i, val);
433 /*
434 * If the first chunk is the header, do not consider it for the
435 * calculation of the largest chunk size.
436 */
437 if (i == 0 || (i == 1 && afhi->header_len > 0)) {
438 old = val;
439 continue;
440 }
441 max = PARA_MAX(max, val - old);
442 old = val;
443 }
444 return max;
445 }
446
447 static void load_chunk_table(struct afh_info *afhi, char *buf)
448 {
449 int i;
450
451 afhi->chunk_table = para_malloc(sizeof_chunk_table(afhi));
452 for (i = 0; i <= afhi->chunks_total; i++)
453 afhi->chunk_table[i] = read_u32(buf + 4 * i);
454 }
455
456 /**
457 * Get the row of the audio file table corresponding to the given path.
458 *
459 * \param path The full path of the audio file.
460 * \param row Result pointer.
461 *
462 * \return Standard.
463 */
464 int aft_get_row_of_path(const char *path, struct osl_row **row)
465 {
466 struct osl_object obj = {.data = (char *)path, .size = strlen(path) + 1};
467
468 return osl(osl_get_row(audio_file_table, AFTCOL_PATH, &obj, row));
469 }
470
471 /**
472 * Get the row of the audio file table corresponding to the given hash value.
473 *
474 * \param hash The hash value of the desired audio file.
475 * \param row Result pointer.
476 *
477 * \return Standard.
478 */
479 static int aft_get_row_of_hash(unsigned char *hash, struct osl_row **row)
480 {
481 const struct osl_object obj = {.data = hash, .size = HASH_SIZE};
482 return osl(osl_get_row(audio_file_table, AFTCOL_HASH, &obj, row));
483 }
484
485 /*
486 * Get the audio file selector info object of a row.
487 *
488 * \param row Pointer to a row in the audio file table.
489 * \param obj Result pointer.
490 *
491 * \return Standard.
492 */
493 static int get_afsi_object_of_row(const struct osl_row *row,
494 struct osl_object *obj)
495 {
496 return osl(osl_get_object(audio_file_table, row, AFTCOL_AFSI, obj));
497 }
498
499 /**
500 * Get the osl object holding the audio file selector info, given a path.
501 *
502 *
503 * \param path The full path of the audio file.
504 * \param obj Result pointer.
505 *
506 * \return Positive on success, negative on errors.
507 */
508 static int get_afsi_object_of_path(const char *path, struct osl_object *obj)
509 {
510 struct osl_row *row;
511 int ret = aft_get_row_of_path(path, &row);
512 if (ret < 0)
513 return ret;
514 return get_afsi_object_of_row(row, obj);
515 }
516
517 /**
518 * Get the audio file selector info, given a row of the audio file table.
519 *
520 * \param row Pointer to a row in the audio file table.
521 * \param afsi Result pointer.
522 *
523 * \return Positive on success, negative on errors.
524 */
525 int get_afsi_of_row(const struct osl_row *row, struct afs_info *afsi)
526 {
527 struct osl_object obj;
528 int ret = get_afsi_object_of_row(row, &obj);
529 if (ret < 0)
530 return ret;
531 return load_afsi(afsi, &obj);
532 }
533
534 /*
535 * Get the audio file selector info, given the path of an audio table.
536 *
537 * \param path The full path of the audio file.
538 * \param afsi Result pointer.
539 *
540 * \return Standard.
541 */
542 static int get_afsi_of_path(const char *path, struct afs_info *afsi)
543 {
544 struct osl_object obj;
545 int ret = get_afsi_object_of_path(path, &obj);
546 if (ret < 0)
547 return ret;
548 return load_afsi(afsi, &obj);
549 }
550
551 /**
552 * Get the path of an audio file, given a row of the audio file table.
553 *
554 * \param row Pointer to a row in the audio file table.
555 * \param path Result pointer.
556 *
557 * The result is a pointer to mmapped data. The caller must not attempt
558 * to free it.
559 *
560 * \return Standard.
561 */
562 int get_audio_file_path_of_row(const struct osl_row *row, char **path)
563 {
564 struct osl_object path_obj;
565 int ret = osl(osl_get_object(audio_file_table, row, AFTCOL_PATH,
566 &path_obj));
567 if (ret < 0)
568 return ret;
569 *path = path_obj.data;
570 return 1;
571 }
572
573 /**
574 * Get the object containing the hash value of an audio file, given a row.
575 *
576 * \param row Pointer to a row of the audio file table.
577 * \param obj Result pointer.
578 *
579 * \return The return value of the underlying call to osl_get_object().
580 *
581 * \sa get_hash_of_row().
582 */
583 static int get_hash_object_of_aft_row(const struct osl_row *row,
584 struct osl_object *obj)
585 {
586 return osl(osl_get_object(audio_file_table, row, AFTCOL_HASH, obj));
587 }
588
589 /**
590 * Get the hash value of an audio file, given a row of the audio file table.
591 *
592 * \param row Pointer to a row of the audio file table.
593 * \param hash Result pointer.
594 *
595 * \a hash points to mapped data and must not be freed by the caller.
596 *
597 * \return The return value of the underlying call to
598 * get_hash_object_of_aft_row().
599 */
600 static int get_hash_of_row(const struct osl_row *row, unsigned char **hash)
601 {
602 struct osl_object obj;
603 int ret = get_hash_object_of_aft_row(row, &obj);
604
605 if (ret < 0)
606 return ret;
607 *hash = obj.data;
608 return 1;
609 }
610
611 /**
612 * Get the audio format handler info, given a row of the audio file table.
613 *
614 * \param row Pointer to a row of the audio file table.
615 * \param afhi Result pointer.
616 *
617 * \return The return value of the underlying call to osl_get_object().
618 *
619 * \sa get_chunk_table_of_row().
620 */
621 int get_afhi_of_row(const struct osl_row *row, struct afh_info *afhi)
622 {
623 struct osl_object obj;
624 int ret = osl(osl_get_object(audio_file_table, row, AFTCOL_AFHI,
625 &obj));
626 if (ret < 0)
627 return ret;
628 load_afhi(obj.data, afhi);
629 return 1;
630 }
631
632 /* returns shmid on success */
633 static int save_afd(struct audio_file_data *afd)
634 {
635 size_t size = sizeof(*afd) + sizeof_chunk_table(&afd->afhi);
636 int shmid, ret = shm_new(size);
637 void *shm_afd;
638 char *buf;
639
640 if (ret < 0)
641 return ret;
642 shmid = ret;
643 ret = shm_attach(shmid, ATTACH_RW, &shm_afd);
644 if (ret < 0)
645 goto err;
646 buf = shm_afd;
647 buf += sizeof(*afd);
648 afd->max_chunk_size = save_chunk_table(&afd->afhi, buf);
649 *(struct audio_file_data *)shm_afd = *afd;
650 shm_detach(shm_afd);
651 return shmid;
652 err:
653 shm_destroy(shmid);
654 return ret;
655 }
656
657 /**
658 * Extract a afd stored in a shared memory area.
659 *
660 * Attach the shared memory area given by \a shmid, load the audio file data
661 * stored therein and detach the area afterwards. Called by vss, after
662 * receiving a positive response to the request for the next audio file.
663 +
664 * \param shmid The identifier of the shared memory area containing the afd.
665 * \param afd Result pointer.
666 *
667 * \return Standard.
668 */
669 int load_afd(int shmid, struct audio_file_data *afd)
670 {
671 void *shm_afd;
672 int ret;
673
674 ret = shm_attach(shmid, ATTACH_RO, &shm_afd);
675 if (ret < 0)
676 return ret;
677 *afd = *(struct audio_file_data *)shm_afd;
678 load_chunk_table(&afd->afhi, shm_afd + sizeof(*afd));
679 shm_detach(shm_afd);
680 return 1;
681 }
682
683 static int get_local_time(uint64_t *seconds, char *buf, size_t size,
684 time_t current_time, enum ls_listing_mode lm)
685 {
686 struct tm t;
687
688 if (!localtime_r((time_t *)seconds, &t))
689 return -E_LOCALTIME;
690 if (lm == LS_MODE_MBOX) {
691 if (!strftime(buf, size, "%c", &t))
692 return -E_STRFTIME;
693 return 1;
694 }
695 if (*seconds + 6 * 30 * 24 * 3600 > current_time) {
696 if (!strftime(buf, size, "%b %e %k:%M", &t))
697 return -E_STRFTIME;
698 return 1;
699 }
700 if (!strftime(buf, size, "%b %e %Y", &t))
701 return -E_STRFTIME;
702 return 1;
703 }
704
705 /** Compute the number of (decimal) digits of a number. */
706 #define GET_NUM_DIGITS(x, num) { \
707 typeof((x)) _tmp = PARA_ABS(x); \
708 *num = 1; \
709 if ((_tmp)) \
710 while ((_tmp) > 9) { \
711 (_tmp) /= 10; \
712 (*num)++; \
713 } \
714 }
715
716 __a_const static short unsigned get_duration_width(int seconds)
717 {
718 short unsigned width;
719 unsigned hours = seconds / 3600, mins = (seconds % 3600) / 60;
720
721 if (!hours) /* less than one hour => m:ss or mm:ss => 4 or 5 digits */
722 return 4 + (mins > 9);
723 /* more than one hour => h:mm:ss, hh:mm:ss, hhh:mm:ss, ... */
724 GET_NUM_DIGITS(hours, &width);
725 return width + 6;
726 }
727
728 static void get_duration_buf(int seconds, char *buf, struct ls_options *opts)
729 {
730 unsigned hours = seconds / 3600, mins = (seconds % 3600) / 60;
731 short unsigned max_width;
732
733 if (!hours) { /* m:ss or mm:ss */
734 max_width = opts->mode == LS_MODE_LONG?
735 opts->widths.duration_width : 4;
736 sprintf(buf, "%*u:%02u", max_width - 3, mins, seconds % 60);
737 } else { /* more than one hour => h:mm:ss, hh:mm:ss, hhh:mm:ss, ... */
738 max_width = opts->mode == LS_MODE_LONG?
739 opts->widths.duration_width : 7;
740 sprintf(buf, "%*u:%02u:%02u", max_width - 6, hours, mins,
741 seconds % 60);
742 }
743 }
744
745 static int write_attribute_items(struct para_buffer *b,
746 const char *att_bitmap, struct afs_info *afsi)
747 {
748 char *att_text;
749 int ret;
750
751 WRITE_STATUS_ITEM(b, SI_ATTRIBUTES_BITMAP, "%s\n", att_bitmap);
752 ret = get_attribute_text(&afsi->attributes, " ", &att_text);
753 if (ret < 0)
754 return ret;
755 WRITE_STATUS_ITEM(b, SI_ATTRIBUTES_TXT, "%s\n", att_text);
756 free(att_text);
757 return ret;
758 }
759
760 static void write_lyrics_items(struct para_buffer *b, struct afs_info *afsi)
761 {
762 char *lyrics_name;
763
764 WRITE_STATUS_ITEM(b, SI_LYRICS_ID, "%u\n", afsi->lyrics_id);
765 lyr_get_name_by_id(afsi->lyrics_id, &lyrics_name);
766 WRITE_STATUS_ITEM(b, SI_LYRICS_NAME, "%s\n", lyrics_name?
767 lyrics_name : "(none)");
768 }
769
770 static void write_image_items(struct para_buffer *b, struct afs_info *afsi)
771 {
772 char *image_name;
773
774 WRITE_STATUS_ITEM(b, SI_IMAGE_ID, "%u\n", afsi->image_id);
775 img_get_name_by_id(afsi->image_id, &image_name);
776 WRITE_STATUS_ITEM(b, SI_IMAGE_NAME, "%s\n", image_name?
777 image_name : "(none)");
778 }
779
780 static void write_filename_items(struct para_buffer *b, const char *path,
781 unsigned flags)
782 {
783 char *val;
784
785 if (!(flags & LS_FLAG_FULL_PATH)) {
786 WRITE_STATUS_ITEM(b, SI_BASENAME, "%s\n", path);
787 return;
788 }
789 WRITE_STATUS_ITEM(b, SI_PATH, "%s\n", path);
790 val = para_basename(path);
791 WRITE_STATUS_ITEM(b, SI_BASENAME, "%s\n", val? val : "");
792 val = para_dirname(path);
793 WRITE_STATUS_ITEM(b, SI_DIRECTORY, "%s\n", val? val : "");
794 free(val);
795 }
796
797 static int print_chunk_table(struct ls_data *d, struct para_buffer *b)
798 {
799 struct osl_object chunk_table_obj;
800 struct osl_row *aft_row;
801 int ret, i;
802 char *buf;
803
804 ret = aft_get_row_of_hash(d->hash, &aft_row);
805 if (ret < 0)
806 return ret;
807 ret = osl(osl_open_disk_object(audio_file_table, aft_row,
808 AFTCOL_CHUNKS, &chunk_table_obj));
809 if (ret < 0)
810 return ret;
811 para_printf(b, "%s\n"
812 "chunk_time: %lu:%lu\nchunk_offsets: ",
813 d->path,
814 (long unsigned) d->afhi.chunk_tv.tv_sec,
815 (long unsigned) d->afhi.chunk_tv.tv_usec
816 );
817 buf = chunk_table_obj.data;
818 for (i = 0; i <= d->afhi.chunks_total; i++)
819 para_printf(b, "%u ", (unsigned) read_u32(buf + 4 * i));
820 para_printf(b, "\n");
821 ret = 1;
822 osl_close_disk_object(&chunk_table_obj);
823 return ret;
824 }
825
826 static void write_score(struct para_buffer *b, struct ls_data *d,
827 struct ls_options *opts)
828 {
829 if (!(opts->flags & LS_FLAG_ADMISSIBLE_ONLY)) /* no score*/
830 return;
831 WRITE_STATUS_ITEM(b, SI_SCORE, "%li\n", d->score);
832 }
833
834 static int print_list_item(struct ls_data *d, struct ls_options *opts,
835 struct para_buffer *b, time_t current_time)
836 {
837 int ret;
838 char att_buf[65];
839 char last_played_time[30];
840 char duration_buf[30]; /* nobody has an audio file long enough to overflow this */
841 struct afs_info *afsi = &d->afsi;
842 struct afh_info *afhi = &d->afhi;
843 char asc_hash[2 * HASH_SIZE + 1];
844
845 if (opts->mode == LS_MODE_SHORT) {
846 para_printf(b, "%s\n", d->path);
847 ret = 1;
848 goto out;
849 }
850 if (opts->mode == LS_MODE_CHUNKS) {
851 ret = print_chunk_table(d, b);
852 goto out;
853 }
854 get_attribute_bitmap(&afsi->attributes, att_buf);
855 if (opts->flags & LS_FLAG_UNIXDATE)
856 sprintf(last_played_time, "%llu",
857 (long long unsigned)afsi->last_played);
858 else {
859 ret = get_local_time(&afsi->last_played, last_played_time,
860 sizeof(last_played_time), current_time, opts->mode);
861 if (ret < 0)
862 goto out;
863 }
864 get_duration_buf(afhi->seconds_total, duration_buf, opts);
865 if (opts->mode == LS_MODE_LONG) {
866 struct ls_widths *w = &opts->widths;
867 if (opts->flags & LS_FLAG_ADMISSIBLE_ONLY) {
868 para_printf(b, "%*li ", opts->widths.score_width,
869 d->score);
870 }
871 para_printf(b,
872 "%s " /* attributes */
873 "%*u " /* amp */
874 "%*d " /* image_id */
875 "%*d " /* lyrics_id */
876 "%*d " /* bitrate */
877 "%*s " /* audio format */
878 "%*d " /* frequency */
879 "%d " /* channels */
880 "%s " /* duration */
881 "%*d " /* num_played */
882 "%s " /* last_played */
883 "%s\n", /* path */
884 att_buf,
885 w->amp_width, afsi->amp,
886 w->image_id_width, afsi->image_id,
887 w->lyrics_id_width, afsi->lyrics_id,
888 w->bitrate_width, afhi->bitrate,
889 w->audio_format_width,
890 audio_format_name(afsi->audio_format_id),
891 w->frequency_width, afhi->frequency,
892 afhi->channels,
893 duration_buf,
894 w->num_played_width, afsi->num_played,
895 last_played_time,
896 d->path
897 );
898 ret = 1;
899 goto out;
900 }
901 if (opts->mode == LS_MODE_MBOX) {
902 const char *bn = para_basename(d->path);
903 para_printf(b,
904 "From foo@localhost %s\n"
905 "Received: from\nTo: bar\nFrom: a\n"
906 "Subject: %s\n\n",
907 last_played_time,
908 bn? bn : "?");
909 }
910 write_filename_items(b, d->path, opts->flags);
911 write_score(b, d, opts);
912 ret = write_attribute_items(b, att_buf, afsi);
913 if (ret < 0)
914 goto out;
915 write_image_items(b, afsi);
916 write_lyrics_items(b, afsi);
917 hash_to_asc(d->hash, asc_hash);
918 WRITE_STATUS_ITEM(b, SI_HASH, "%s\n", asc_hash);
919 WRITE_STATUS_ITEM(b, SI_BITRATE, "%dkbit/s\n", afhi->bitrate);
920 WRITE_STATUS_ITEM(b, SI_FORMAT, "%s\n",
921 audio_format_name(afsi->audio_format_id));
922 WRITE_STATUS_ITEM(b, SI_FREQUENCY, "%dHz\n", afhi->frequency);
923 WRITE_STATUS_ITEM(b, SI_CHANNELS, "%d\n", afhi->channels);
924 WRITE_STATUS_ITEM(b, SI_DURATION, "%s\n", duration_buf);
925 WRITE_STATUS_ITEM(b, SI_SECONDS_TOTAL, "%lu\n", afhi->seconds_total);
926 WRITE_STATUS_ITEM(b, SI_LAST_PLAYED, "%s\n", last_played_time);
927 WRITE_STATUS_ITEM(b, SI_NUM_PLAYED, "%d\n", afsi->num_played);
928 WRITE_STATUS_ITEM(b, SI_AMPLIFICATION, "%u\n", afsi->amp);
929 WRITE_STATUS_ITEM(b, SI_CHUNK_TIME, "%lu\n", tv2ms(&afhi->chunk_tv));
930 WRITE_STATUS_ITEM(b, SI_NUM_CHUNKS, "%lu\n", afhi->chunks_total);
931 WRITE_STATUS_ITEM(b, SI_TECHINFO, "%s\n", afhi->techinfo);
932 WRITE_STATUS_ITEM(b, SI_ARTIST, "%s\n", afhi->tags.artist);
933 WRITE_STATUS_ITEM(b, SI_TITLE, "%s\n", afhi->tags.title);
934 WRITE_STATUS_ITEM(b, SI_YEAR, "%s\n", afhi->tags.year);
935 WRITE_STATUS_ITEM(b, SI_ALBUM, "%s\n", afhi->tags.album);
936 WRITE_STATUS_ITEM(b, SI_COMMENT, "%s\n", afhi->tags.comment);
937 if (opts->mode == LS_MODE_MBOX) {
938 struct osl_object lyrics_def;
939 lyr_get_def_by_id(afsi->lyrics_id, &lyrics_def);
940 if (lyrics_def.data) {
941 para_printf(b, "Lyrics:\n~~~~~~~\n%s",
942 (char *)lyrics_def.data);
943 osl_close_disk_object(&lyrics_def);
944 }
945 }
946 out:
947 return ret;
948 }
949
950 static struct ls_data status_item_ls_data;
951 static struct osl_row *current_aft_row;
952
953 static void make_inode_status_items(struct para_buffer *pb)
954 {
955 struct stat statbuf = {.st_size = 0};
956 char *path, mtime_str[30] = "\0";
957 struct tm mtime_tm;
958 int ret;
959
960 ret = get_audio_file_path_of_row(current_aft_row, &path);
961 if (ret < 0)
962 goto out;
963 ret = stat(path, &statbuf);
964 if (ret < 0)
965 goto out;
966 localtime_r(&statbuf.st_mtime, &mtime_tm);
967 ret = strftime(mtime_str, 29, "%b %d %Y", &mtime_tm);
968 assert(ret > 0); /* number of bytes placed in mtime_str */
969 out:
970 WRITE_STATUS_ITEM(pb, SI_MTIME, "%s\n", mtime_str);
971 WRITE_STATUS_ITEM(pb, SI_FILE_SIZE, "%ld\n", statbuf.st_size / 1024);
972 }
973
974 static int make_status_items(void)
975 {
976 struct ls_options opts = {
977 .flags = LS_FLAG_FULL_PATH | LS_FLAG_ADMISSIBLE_ONLY,
978 .mode = LS_MODE_VERBOSE,
979 };
980 struct para_buffer pb = {.max_size = shm_get_shmmax() - 1};
981 time_t current_time;
982 int ret;
983
984 time(&current_time);
985 ret = print_list_item(&status_item_ls_data, &opts, &pb, current_time);
986 if (ret < 0)
987 return ret;
988 make_inode_status_items(&pb);
989 free(status_items);
990 status_items = pb.buf;
991 memset(&pb, 0, sizeof(pb));
992 pb.max_size = shm_get_shmmax() - 1;
993 pb.flags = PBF_SIZE_PREFIX;
994 ret = print_list_item(&status_item_ls_data, &opts, &pb, current_time);
995 if (ret < 0) {
996 free(status_items);
997 status_items = NULL;
998 return ret;
999 }
1000 make_inode_status_items(&pb);
1001 free(parser_friendly_status_items);
1002 parser_friendly_status_items = pb.buf;
1003 return 1;
1004 }
1005
1006 /**
1007 * Open the audio file with highest score and set up an afd structure.
1008 *
1009 * \param afd Result pointer.
1010 *
1011 * On success, the numplayed field of the audio file selector info is increased
1012 * and the lastplayed time is set to the current time. Finally, the score of
1013 * the audio file is updated.
1014 *
1015 * \return Positive shmid on success, negative on errors.
1016 */
1017 int open_and_update_audio_file(struct audio_file_data *afd)
1018 {
1019 unsigned char file_hash[HASH_SIZE];
1020 struct osl_object afsi_obj;
1021 struct afs_info new_afsi;
1022 int ret;
1023 struct afsi_change_event_data aced;
1024 struct osl_object map, chunk_table_obj;
1025 struct ls_data *d = &status_item_ls_data;
1026 again:
1027 ret = score_get_best(&current_aft_row, &d->score);
1028 if (ret < 0)
1029 return ret;
1030 ret = get_hash_of_row(current_aft_row, &d->hash);
1031 if (ret < 0)
1032 return ret;
1033 ret = get_audio_file_path_of_row(current_aft_row, &d->path);
1034 if (ret < 0)
1035 return ret;
1036 PARA_NOTICE_LOG("%s\n", d->path);
1037 ret = get_afsi_object_of_row(current_aft_row, &afsi_obj);
1038 if (ret < 0)
1039 return ret;
1040 ret = load_afsi(&d->afsi, &afsi_obj);
1041 if (ret < 0)
1042 return ret;
1043 ret = get_afhi_of_row(current_aft_row, &afd->afhi);
1044 if (ret < 0)
1045 return ret;
1046 d->afhi = afd->afhi;
1047 d->afhi.chunk_table = afd->afhi.chunk_table = NULL;
1048 ret = osl(osl_open_disk_object(audio_file_table, current_aft_row,
1049 AFTCOL_CHUNKS, &chunk_table_obj));
1050 if (ret < 0)
1051 return ret;
1052 ret = mmap_full_file(d->path, O_RDONLY, &map.data, &map.size, &afd->fd);
1053 if (ret < 0)
1054 goto out;
1055 hash_function(map.data, map.size, file_hash);
1056 ret = hash_compare(file_hash, d->hash);
1057 para_munmap(map.data, map.size);
1058 if (ret) {
1059 ret = -E_HASH_MISMATCH;
1060 goto out;
1061 }
1062 new_afsi = d->afsi;
1063 new_afsi.num_played++;
1064 new_afsi.last_played = time(NULL);
1065 save_afsi(&new_afsi, &afsi_obj); /* in-place update */
1066
1067 afd->audio_format_id = d->afsi.audio_format_id;
1068 load_chunk_table(&afd->afhi, chunk_table_obj.data);
1069 aced.aft_row = current_aft_row;
1070 aced.old_afsi = &d->afsi;
1071 /*
1072 * No need to update the status items as the AFSI_CHANGE event will
1073 * recreate them.
1074 */
1075 afs_event(AFSI_CHANGE, NULL, &aced);
1076 ret = save_afd(afd);
1077 out:
1078 free(afd->afhi.chunk_table);
1079 osl_close_disk_object(&chunk_table_obj);
1080 if (ret < 0) {
1081 PARA_ERROR_LOG("%s: %s\n", d->path, para_strerror(-ret));
1082 ret = score_delete(current_aft_row);
1083 if (ret >= 0)
1084 goto again;
1085 }
1086 return ret;
1087 }
1088
1089 static int ls_audio_format_compare(const void *a, const void *b)
1090 {
1091 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1092 return NUM_COMPARE(d1->afsi.audio_format_id, d2->afsi.audio_format_id);
1093 }
1094
1095 static int ls_duration_compare(const void *a, const void *b)
1096 {
1097 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1098 return NUM_COMPARE(d1->afhi.seconds_total, d2->afhi.seconds_total);
1099 }
1100
1101 static int ls_bitrate_compare(const void *a, const void *b)
1102 {
1103 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1104 return NUM_COMPARE(d1->afhi.bitrate, d2->afhi.bitrate);
1105 }
1106
1107 static int ls_lyrics_id_compare(const void *a, const void *b)
1108 {
1109 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1110 return NUM_COMPARE(d1->afsi.lyrics_id, d2->afsi.lyrics_id);
1111 }
1112
1113 static int ls_image_id_compare(const void *a, const void *b)
1114 {
1115 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1116 return NUM_COMPARE(d1->afsi.image_id, d2->afsi.image_id);
1117 }
1118
1119 static int ls_channels_compare(const void *a, const void *b)
1120 {
1121 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1122 return NUM_COMPARE(d1->afhi.channels, d2->afhi.channels);
1123 }
1124
1125 static int ls_frequency_compare(const void *a, const void *b)
1126 {
1127 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1128 return NUM_COMPARE(d1->afhi.frequency, d2->afhi.frequency);
1129 }
1130
1131 static int ls_num_played_compare(const void *a, const void *b)
1132 {
1133 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1134 return NUM_COMPARE(d1->afsi.num_played, d2->afsi.num_played);
1135 }
1136
1137 static int ls_last_played_compare(const void *a, const void *b)
1138 {
1139 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1140 return NUM_COMPARE(d1->afsi.last_played, d2->afsi.last_played);
1141 }
1142
1143 static int ls_score_compare(const void *a, const void *b)
1144 {
1145 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1146 return NUM_COMPARE(d1->score, d2->score);
1147 }
1148
1149 static int ls_path_compare(const void *a, const void *b)
1150 {
1151 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1152 return strcmp(d1->path, d2->path);
1153 }
1154
1155 static int sort_matching_paths(struct ls_options *options)
1156 {
1157 size_t nmemb = options->num_matching_paths;
1158 size_t size = sizeof(*options->data_ptr);
1159 int (*compar)(const void *, const void *);
1160 int i;
1161
1162 options->data_ptr = para_malloc(nmemb * sizeof(*options->data_ptr));
1163 for (i = 0; i < nmemb; i++)
1164 options->data_ptr[i] = options->data + i;
1165
1166 /* In these cases the array is already sorted */
1167 if (options->sorting == LS_SORT_BY_PATH
1168 && !(options->flags & LS_FLAG_ADMISSIBLE_ONLY)
1169 && (options->flags & LS_FLAG_FULL_PATH))
1170 return 1;
1171 if (options->sorting == LS_SORT_BY_SCORE &&
1172 options->flags & LS_FLAG_ADMISSIBLE_ONLY)
1173 return 1;
1174
1175 switch (options->sorting) {
1176 case LS_SORT_BY_PATH:
1177 compar = ls_path_compare; break;
1178 case LS_SORT_BY_SCORE:
1179 compar = ls_score_compare; break;
1180 case LS_SORT_BY_LAST_PLAYED:
1181 compar = ls_last_played_compare; break;
1182 case LS_SORT_BY_NUM_PLAYED:
1183 compar = ls_num_played_compare; break;
1184 case LS_SORT_BY_FREQUENCY:
1185 compar = ls_frequency_compare; break;
1186 case LS_SORT_BY_CHANNELS:
1187 compar = ls_channels_compare; break;
1188 case LS_SORT_BY_IMAGE_ID:
1189 compar = ls_image_id_compare; break;
1190 case LS_SORT_BY_LYRICS_ID:
1191 compar = ls_lyrics_id_compare; break;
1192 case LS_SORT_BY_BITRATE:
1193 compar = ls_bitrate_compare; break;
1194 case LS_SORT_BY_DURATION:
1195 compar = ls_duration_compare; break;
1196 case LS_SORT_BY_AUDIO_FORMAT:
1197 compar = ls_audio_format_compare; break;
1198 default:
1199 return -E_BAD_SORT;
1200 }
1201 qsort(options->data_ptr, nmemb, size, compar);
1202 return 1;
1203 }
1204
1205 /* row is either an aft_row or a row of the score table */
1206 /* TODO: Only compute widths if we need them */
1207 static int prepare_ls_row(struct osl_row *row, void *ls_opts)
1208 {
1209 int ret, i;
1210 struct ls_options *options = ls_opts;
1211 struct ls_data *d;
1212 struct ls_widths *w;
1213 unsigned short num_digits;
1214 unsigned tmp;
1215 struct osl_row *aft_row;
1216 long score;
1217 char *path;
1218
1219 if (options->flags & LS_FLAG_ADMISSIBLE_ONLY) {
1220 ret = get_score_and_aft_row(row, &score, &aft_row);
1221 if (ret < 0)
1222 return ret;
1223 } else {
1224 aft_row = row;
1225 score = 0;
1226 }
1227 ret = get_audio_file_path_of_row(aft_row, &path);
1228 if (ret < 0)
1229 return ret;
1230 if (!(options->flags & LS_FLAG_FULL_PATH)) {
1231 char *p = strrchr(path, '/');
1232 if (p)
1233 path = p + 1;
1234 }
1235 if (options->num_patterns) {
1236 for (i = 0; i < options->num_patterns; i++) {
1237 ret = fnmatch(options->patterns[i], path, 0);
1238 if (!ret)
1239 break;
1240 if (ret == FNM_NOMATCH)
1241 continue;
1242 return -E_FNMATCH;
1243 }
1244 if (i >= options->num_patterns) /* no match */
1245 return 1;
1246 }
1247 tmp = options->num_matching_paths++;
1248 if (options->num_matching_paths > options->array_size) {
1249 options->array_size++;
1250 options->array_size *= 2;
1251 options->data = para_realloc(options->data, options->array_size
1252 * sizeof(*options->data));
1253 }
1254 d = options->data + tmp;
1255 ret = get_afsi_of_row(aft_row, &d->afsi);
1256 if (ret < 0)
1257 return ret;
1258 ret = get_afhi_of_row(aft_row, &d->afhi);
1259 if (ret < 0)
1260 return ret;
1261 d->path = path;
1262 ret = get_hash_of_row(aft_row, &d->hash);
1263 if (ret < 0)
1264 goto err;
1265 w = &options->widths;
1266 GET_NUM_DIGITS(d->afsi.image_id, &num_digits);
1267 w->image_id_width = PARA_MAX(w->image_id_width, num_digits);
1268 GET_NUM_DIGITS(d->afsi.lyrics_id, &num_digits);
1269 w->lyrics_id_width = PARA_MAX(w->lyrics_id_width, num_digits);
1270 GET_NUM_DIGITS(d->afhi.bitrate, &num_digits);
1271 w->bitrate_width = PARA_MAX(w->bitrate_width, num_digits);
1272 GET_NUM_DIGITS(d->afhi.frequency, &num_digits);
1273 w->frequency_width = PARA_MAX(w->frequency_width, num_digits);
1274 GET_NUM_DIGITS(d->afsi.num_played, &num_digits);
1275 w->num_played_width = PARA_MAX(w->num_played_width, num_digits);
1276 /* get the number of chars to print this amount of time */
1277 num_digits = get_duration_width(d->afhi.seconds_total);
1278 w->duration_width = PARA_MAX(w->duration_width, num_digits);
1279 GET_NUM_DIGITS(d->afsi.amp, &num_digits);
1280 w->amp_width = PARA_MAX(w->amp_width, num_digits);
1281 num_digits = strlen(audio_format_name(d->afsi.audio_format_id));
1282 w->audio_format_width = PARA_MAX(w->audio_format_width, num_digits);
1283 if (options->flags & LS_FLAG_ADMISSIBLE_ONLY) {
1284 GET_NUM_DIGITS(score, &num_digits);
1285 num_digits++; /* add one for the sign (space or "-") */
1286 w->score_width = PARA_MAX(w->score_width, num_digits);
1287 d->score = score;
1288 }
1289 return 1;
1290 err:
1291 return ret;
1292 }
1293
1294 static int com_ls_callback(int fd, const struct osl_object *query)
1295 {
1296 struct ls_options *opts = query->data;
1297 char *p, *pattern_start = (char *)query->data + sizeof(*opts);
1298 struct para_buffer b = {
1299 .max_size = shm_get_shmmax(),
1300 .flags = (opts->mode == LS_MODE_PARSER)? PBF_SIZE_PREFIX : 0,
1301 .max_size_handler = afs_max_size_handler,
1302 .private_data = &(struct afs_max_size_handler_data) {
1303 .fd = fd,
1304 .band = SBD_OUTPUT
1305 }
1306 };
1307 int i = 0, ret;
1308 time_t current_time;
1309
1310 if (opts->num_patterns) {
1311 opts->patterns = para_malloc(opts->num_patterns * sizeof(char *));
1312 for (i = 0, p = pattern_start; i < opts->num_patterns; i++) {
1313 opts->patterns[i] = p;
1314 p += strlen(p) + 1;
1315 }
1316 } else
1317 opts->patterns = NULL;
1318 if (opts->flags & LS_FLAG_ADMISSIBLE_ONLY)
1319 ret = admissible_file_loop(opts, prepare_ls_row);
1320 else
1321 ret = osl(osl_rbtree_loop(audio_file_table, AFTCOL_PATH, opts,
1322 prepare_ls_row));
1323 if (ret < 0)
1324 goto out;
1325 if (opts->num_matching_paths == 0) {
1326 ret = opts->num_patterns > 0? -E_NO_MATCH : 0;
1327 goto out;
1328 }
1329 ret = sort_matching_paths(opts);
1330 if (ret < 0)
1331 goto out;
1332 time(&current_time);
1333 if (opts->flags & LS_FLAG_REVERSE)
1334 for (i = opts->num_matching_paths - 1; i >= 0; i--) {
1335 ret = print_list_item(opts->data_ptr[i], opts, &b, current_time);
1336 if (ret < 0)
1337 goto out;
1338 }
1339 else
1340 for (i = 0; i < opts->num_matching_paths; i++) {
1341 ret = print_list_item(opts->data_ptr[i], opts, &b, current_time);
1342 if (ret < 0)
1343 goto out;
1344 }
1345 out:
1346 flush_and_free_pb(&b);
1347 free(opts->data);
1348 free(opts->data_ptr);
1349 free(opts->patterns);
1350 return ret;
1351 }
1352
1353 /*
1354 * TODO: flags -h (sort by hash)
1355 */
1356 int com_ls(struct command_context *cc)
1357 {
1358 int i;
1359 unsigned flags = 0;
1360 enum ls_sorting_method sort = LS_SORT_BY_PATH;
1361 enum ls_listing_mode mode = LS_MODE_SHORT;
1362 struct ls_options opts = {.patterns = NULL};
1363 struct osl_object query = {.data = &opts, .size = sizeof(opts)};
1364
1365 for (i = 1; i < cc->argc; i++) {
1366 const char *arg = cc->argv[i];
1367 if (arg[0] != '-')
1368 break;
1369 if (!strcmp(arg, "--")) {
1370 i++;
1371 break;
1372 }
1373 if (!strncmp(arg, "-l", 2)) {
1374 if (!*(arg + 2)) {
1375 mode = LS_MODE_LONG;
1376 continue;
1377 }
1378 if (*(arg + 3))
1379 return -E_AFT_SYNTAX;
1380 switch(*(arg + 2)) {
1381 case 's':
1382 mode = LS_MODE_SHORT;
1383 continue;
1384 case 'l':
1385 mode = LS_MODE_LONG;
1386 continue;
1387 case 'v':
1388 mode = LS_MODE_VERBOSE;
1389 continue;
1390 case 'm':
1391 mode = LS_MODE_MBOX;
1392 continue;
1393 case 'c':
1394 mode = LS_MODE_CHUNKS;
1395 continue;
1396 case 'p':
1397 mode = LS_MODE_PARSER;
1398 continue;
1399 default:
1400 return -E_AFT_SYNTAX;
1401 }
1402 }
1403 if (!strcmp(arg, "-p")) {
1404 flags |= LS_FLAG_FULL_PATH;
1405 continue;
1406 }
1407 if (!strcmp(arg, "-a")) {
1408 flags |= LS_FLAG_ADMISSIBLE_ONLY;
1409 continue;
1410 }
1411 if (!strcmp(arg, "-r")) {
1412 flags |= LS_FLAG_REVERSE;
1413 continue;
1414 }
1415 if (!strcmp(arg, "-d")) {
1416 flags |= LS_FLAG_UNIXDATE;
1417 continue;
1418 }
1419 if (!strncmp(arg, "-s", 2)) {
1420 if (!*(arg + 2) || *(arg + 3))
1421 return -E_AFT_SYNTAX;
1422 switch(*(arg + 2)) {
1423 case 'p':
1424 sort = LS_SORT_BY_PATH;
1425 continue;
1426 case 's': /* -ss implies -a */
1427 sort = LS_SORT_BY_SCORE;
1428 flags |= LS_FLAG_ADMISSIBLE_ONLY;
1429 continue;
1430 case 'l':
1431 sort = LS_SORT_BY_LAST_PLAYED;
1432 continue;
1433 case 'n':
1434 sort = LS_SORT_BY_NUM_PLAYED;
1435 continue;
1436 case 'f':
1437 sort = LS_SORT_BY_FREQUENCY;
1438 continue;
1439 case 'c':
1440 sort = LS_SORT_BY_CHANNELS;
1441 continue;
1442 case 'i':
1443 sort = LS_SORT_BY_IMAGE_ID;
1444 continue;
1445 case 'y':
1446 sort = LS_SORT_BY_LYRICS_ID;
1447 continue;
1448 case 'b':
1449 sort = LS_SORT_BY_BITRATE;
1450 continue;
1451 case 'd':
1452 sort = LS_SORT_BY_DURATION;
1453 continue;
1454 case 'a':
1455 sort = LS_SORT_BY_AUDIO_FORMAT;
1456 continue;
1457 default:
1458 return -E_AFT_SYNTAX;
1459 }
1460 }
1461 return -E_AFT_SYNTAX;
1462 }
1463 opts.flags = flags;
1464 opts.sorting = sort;
1465 opts.mode = mode;
1466 opts.num_patterns = cc->argc - i;
1467 return send_option_arg_callback_request(&query, opts.num_patterns,
1468 cc->argv + i, com_ls_callback, afs_cb_result_handler, cc);
1469 }
1470
1471 /**
1472 * Call the given function for each file in the audio file table.
1473 *
1474 * \param private_data An arbitrary data pointer, passed to \a func.
1475 * \param func The custom function to be called.
1476 *
1477 * \return Standard.
1478 */
1479 int audio_file_loop(void *private_data, osl_rbtree_loop_func *func)
1480 {
1481 return osl(osl_rbtree_loop(audio_file_table, AFTCOL_HASH, private_data,
1482 func));
1483 }
1484
1485 static struct osl_row *find_hash_sister(unsigned char *hash)
1486 {
1487 const struct osl_object obj = {.data = hash, .size = HASH_SIZE};
1488 struct osl_row *row;
1489
1490 osl_get_row(audio_file_table, AFTCOL_HASH, &obj, &row);
1491 return row;
1492 }
1493
1494 /** The format of the data stored by save_audio_file_data(). */
1495 enum com_add_buffer_offsets {
1496 /** afhi (if present) starts here. */
1497 CAB_AFHI_OFFSET_POS = 0,
1498 /** Start of the chunk table (if present). */
1499 CAB_CHUNKS_OFFSET_POS = 2,
1500 /** Audio format id. */
1501 CAB_AUDIO_FORMAT_OFFSET = 4,
1502 /** Flags given to the add command. */
1503 CAB_FLAGS_OFFSET = 5,
1504 /** The hash of the audio file being added. */
1505 CAB_HASH_OFFSET = 9,
1506 /** Start of the path of the audio file. */
1507 CAB_PATH_OFFSET = (CAB_HASH_OFFSET + HASH_SIZE),
1508 };
1509
1510 /*
1511 * Store the given data to a single buffer. Doesn't need the audio file selector
1512 * info struct as the server knows it as well.
1513 *
1514 * It's OK to call this with afhi == NULL. In this case, the audio format
1515 * handler info won't be stored in the buffer.
1516 */
1517 static void save_add_callback_buffer(unsigned char *hash, const char *path,
1518 struct afh_info *afhi, uint32_t flags,
1519 uint8_t audio_format_num, struct osl_object *obj)
1520 {
1521 size_t path_len = strlen(path) + 1;
1522 size_t afhi_size = sizeof_afhi_buf(afhi);
1523 size_t size = CAB_PATH_OFFSET + path_len + afhi_size
1524 + sizeof_chunk_table(afhi);
1525 char *buf = para_malloc(size);
1526 uint16_t pos;
1527
1528 write_u8(buf + CAB_AUDIO_FORMAT_OFFSET, audio_format_num);
1529 write_u32(buf + CAB_FLAGS_OFFSET, flags);
1530
1531 memcpy(buf + CAB_HASH_OFFSET, hash, HASH_SIZE);
1532 strcpy(buf + CAB_PATH_OFFSET, path);
1533
1534 pos = CAB_PATH_OFFSET + path_len;
1535 PARA_DEBUG_LOG("size: %zu, afhi starts at %d\n", size, pos);
1536 PARA_DEBUG_LOG("last afhi byte: %p, pos %zu\n", buf + pos + afhi_size - 1,
1537 pos + afhi_size - 1);
1538 write_u16(buf + CAB_AFHI_OFFSET_POS, pos);
1539 save_afhi(afhi, buf + pos);
1540
1541 pos += afhi_size;
1542 PARA_DEBUG_LOG("size: %zu, chunks start at %d\n", size, pos);
1543 write_u16(buf + CAB_CHUNKS_OFFSET_POS, pos);
1544 if (afhi)
1545 save_chunk_table(afhi, buf + pos);
1546 PARA_DEBUG_LOG("last byte in buf: %p\n", buf + size - 1);
1547 obj->data = buf;
1548 obj->size = size;
1549 }
1550
1551 /*
1552
1553 Overview of the add command.
1554
1555 Input: What was passed to the callback by the command handler.
1556 ~~~~~~
1557 HS: Hash sister. Whether an audio file with identical hash
1558 already exists in the osl database.
1559
1560 PB: Path brother. Whether a file with the given path exists
1561 in the table.
1562
1563 F: Force flag given. Whether add was called with -f.
1564
1565 output: Action performed by the callback.
1566 ~~~~~~~
1567 AFHI: Whether afhi and chunk table are computed and sent.
1568 ACTION: Table modifications to be done by the callback.
1569
1570 +----+----+---+------+---------------------------------------------------+
1571 | HS | PB | F | AFHI | ACTION
1572 +----+----+---+------+---------------------------------------------------+
1573 | Y | Y | Y | Y | if HS != PB: remove PB. HS: force afhi update,
1574 | | update path, keep afsi
1575 +----+----+---+------+---------------------------------------------------+
1576 | Y | Y | N | N | if HS == PB: do not send callback request at all.
1577 | | otherwise: remove PB, HS: update path, keep afhi,
1578 | | afsi.
1579 +----+----+---+------+---------------------------------------------------+
1580 | Y | N | Y | Y | (rename) force afhi update of HS, update path of
1581 | | HS, keep afsi
1582 +----+----+---+------+---------------------------------------------------+
1583 | Y | N | N | N | (file rename) update path of HS, keep afsi, afhi
1584 +----+----+---+------+---------------------------------------------------+
1585 | N | Y | Y | Y | (file change) update afhi, hash, of PB, keep afsi
1586 | | (force has no effect)
1587 +----+----+---+------+---------------------------------------------------+
1588 | N | Y | N | Y | (file change) update afhi, hash of PB, keep afsi
1589 +----+----+---+------+---------------------------------------------------+
1590 | N | N | Y | Y | (new file) create new entry (force has no effect)
1591 +----+----+---+------+---------------------------------------------------+
1592 | N | N | N | Y | (new file) create new entry
1593 +----+----+---+------+---------------------------------------------------+
1594
1595 Notes:
1596
1597 afhi <=> force or no HS
1598 F => AFHI
1599
1600 */
1601
1602 /** Flags passed to the add command. */
1603 enum com_add_flags {
1604 /** Skip paths that exist already. */
1605 ADD_FLAG_LAZY = 1,
1606 /** Force adding. */
1607 ADD_FLAG_FORCE = 2,
1608 /** Print what is being done. */
1609 ADD_FLAG_VERBOSE = 4,
1610 /** Try to add files with unknown suffixes. */
1611 ADD_FLAG_ALL = 8,
1612 };
1613
1614 static int com_add_callback(int fd, const struct osl_object *query)
1615 {
1616 char *buf = query->data, *path;
1617 struct osl_row *pb, *aft_row;
1618 struct osl_row *hs;
1619 struct osl_object objs[NUM_AFT_COLUMNS];
1620 unsigned char *hash;
1621 char asc[2 * HASH_SIZE + 1];
1622 int ret;
1623 char afsi_buf[AFSI_SIZE];
1624 uint32_t flags = read_u32(buf + CAB_FLAGS_OFFSET);
1625 struct afs_info default_afsi = {.last_played = 0};
1626 struct para_buffer msg = {
1627 .max_size = shm_get_shmmax(),
1628 .max_size_handler = afs_max_size_handler,
1629 .private_data = &(struct afs_max_size_handler_data) {
1630 .fd = fd,
1631 .band = SBD_OUTPUT
1632 }
1633 };
1634 uint16_t afhi_offset, chunks_offset;
1635
1636 hash = (unsigned char *)buf + CAB_HASH_OFFSET;
1637 hash_to_asc(hash, asc);
1638 objs[AFTCOL_HASH].data = buf + CAB_HASH_OFFSET;
1639 objs[AFTCOL_HASH].size = HASH_SIZE;
1640
1641 path = buf + CAB_PATH_OFFSET;
1642 objs[AFTCOL_PATH].data = path;
1643 objs[AFTCOL_PATH].size = strlen(path) + 1;
1644
1645 PARA_INFO_LOG("request to add %s\n", path);
1646 hs = find_hash_sister(hash);
1647 ret = aft_get_row_of_path(path, &pb);
1648 if (ret < 0 && ret != -OSL_ERRNO_TO_PARA_ERROR(E_OSL_RB_KEY_NOT_FOUND))
1649 goto out;
1650 if (hs && pb && hs == pb && !(flags & ADD_FLAG_FORCE)) {
1651 if (flags & ADD_FLAG_VERBOSE)
1652 para_printf(&msg, "ignoring duplicate\n");
1653 ret = 1;
1654 goto out;
1655 }
1656 if (hs && hs != pb) {
1657 struct osl_object obj;
1658 if (pb) { /* hs trumps pb, remove pb */
1659 if (flags & ADD_FLAG_VERBOSE)
1660 para_printf(&msg, "removing %s\n", path);
1661 afs_event(AUDIO_FILE_REMOVE, &msg, pb);
1662 ret = osl(osl_del_row(audio_file_table, pb));
1663 if (ret < 0)
1664 goto out;
1665 pb = NULL;
1666 }
1667 /* file rename, update hs' path */
1668 if (flags & ADD_FLAG_VERBOSE) {
1669 ret = osl(osl_get_object(audio_file_table, hs,
1670 AFTCOL_PATH, &obj));
1671 if (ret < 0)
1672 goto out;
1673 para_printf(&msg, "renamed from %s\n", (char *)obj.data);
1674 }
1675 ret = osl(osl_update_object(audio_file_table, hs, AFTCOL_PATH,
1676 &objs[AFTCOL_PATH]));
1677 if (ret < 0)
1678 goto out;
1679 afs_event(AUDIO_FILE_RENAME, &msg, hs);
1680 if (!(flags & ADD_FLAG_FORCE))
1681 goto out;
1682 }
1683 /* no hs or force mode, child must have sent afhi */
1684 afhi_offset = read_u16(buf + CAB_AFHI_OFFSET_POS);
1685 chunks_offset = read_u16(buf + CAB_CHUNKS_OFFSET_POS);
1686
1687 objs[AFTCOL_AFHI].data = buf + afhi_offset;
1688 objs[AFTCOL_AFHI].size = chunks_offset - afhi_offset;
1689 ret = -E_NO_AFHI;
1690 if (!objs[AFTCOL_AFHI].size) /* "impossible" */
1691 goto out;
1692 objs[AFTCOL_CHUNKS].data = buf + chunks_offset;
1693 objs[AFTCOL_CHUNKS].size = query->size - chunks_offset;
1694 if (pb && !hs) { /* update pb's hash */
1695 char old_asc[2 * HASH_SIZE + 1];
1696 unsigned char *old_hash;
1697 ret = get_hash_of_row(pb, &old_hash);
1698 if (ret < 0)
1699 goto out;
1700 hash_to_asc(old_hash, old_asc);
1701 if (flags & ADD_FLAG_VERBOSE)
1702 para_printf(&msg, "file change: %s -> %s\n", old_asc,
1703 asc);
1704 ret = osl_update_object(audio_file_table, pb, AFTCOL_HASH,
1705 &objs[AFTCOL_HASH]);
1706 if (ret < 0)
1707 goto out;
1708 }
1709 if (hs || pb) { /* (hs != NULL and pb != NULL) implies hs == pb */
1710 struct osl_row *row = pb? pb : hs;
1711 /* update afhi and chunk_table */
1712 if (flags & ADD_FLAG_VERBOSE)
1713 para_printf(&msg, "updating afhi and chunk table\n");
1714 ret = osl(osl_update_object(audio_file_table, row, AFTCOL_AFHI,
1715 &objs[AFTCOL_AFHI]));
1716 if (ret < 0)
1717 goto out;
1718 ret = osl(osl_update_object(audio_file_table, row, AFTCOL_CHUNKS,
1719 &objs[AFTCOL_CHUNKS]));
1720 if (ret < 0)
1721 goto out;
1722 afs_event(AFHI_CHANGE, &msg, row);
1723 goto out;
1724 }
1725 /* new entry, use default afsi */
1726 if (flags & ADD_FLAG_VERBOSE)
1727 para_printf(&msg, "new file\n");
1728 default_afsi.last_played = time(NULL) - 365 * 24 * 60 * 60;
1729 default_afsi.audio_format_id = read_u8(buf + CAB_AUDIO_FORMAT_OFFSET);
1730
1731 objs[AFTCOL_AFSI].data = &afsi_buf;
1732 objs[AFTCOL_AFSI].size = AFSI_SIZE;
1733 save_afsi(&default_afsi, &objs[AFTCOL_AFSI]);
1734 ret = osl(osl_add_and_get_row(audio_file_table, objs, &aft_row));
1735 afs_event(AUDIO_FILE_ADD, &msg, aft_row);
1736 out:
1737 if (ret < 0)
1738 para_printf(&msg, "could not add %s\n", path);
1739 flush_and_free_pb(&msg);
1740 return ret;
1741 }
1742
1743 /** Used by com_add(). */
1744 struct private_add_data {
1745 /** The pointer passed to the original command handler. */
1746 struct command_context *cc;
1747 /** The given add flags. */
1748 uint32_t flags;
1749 };
1750
1751 static int path_brother_callback(int fd, const struct osl_object *query)
1752 {
1753 char *path = query->data;
1754 struct osl_row *path_brother;
1755 int ret = aft_get_row_of_path(path, &path_brother);
1756 if (ret < 0)
1757 return ret;
1758 return pass_buffer_as_shm(fd, SBD_OUTPUT, (char *)&path_brother,
1759 sizeof(path_brother));
1760 }
1761
1762 static int hash_sister_callback(int fd, const struct osl_object *query)
1763 {
1764 unsigned char *hash = query->data;
1765 struct osl_row *hash_sister;
1766
1767 hash_sister = find_hash_sister(hash);
1768 if (!hash_sister)
1769 return 0;
1770 return pass_buffer_as_shm(fd, SBD_OUTPUT, (char *)&hash_sister,
1771 sizeof(hash_sister));
1772 }
1773
1774 static int get_row_pointer_from_result(struct osl_object *result,
1775 __a_unused uint8_t band, void *private)
1776 {
1777 struct osl_row **row = private;
1778
1779 if (band == SBD_OUTPUT)
1780 *row = *(struct osl_row **)(result->data);
1781 return 1;
1782 }
1783
1784 static int add_one_audio_file(const char *path, void *private_data)
1785 {
1786 int ret, send_ret = 1, fd;
1787 uint8_t format_num = -1;
1788 struct private_add_data *pad = private_data;
1789 struct afh_info afhi, *afhi_ptr = NULL;
1790 struct osl_row *pb = NULL, *hs = NULL; /* path brother/hash sister */
1791 struct osl_object map, obj = {.data = NULL}, query;
1792 unsigned char hash[HASH_SIZE];
1793
1794 ret = guess_audio_format(path);
1795 if (ret < 0 && !(pad->flags & ADD_FLAG_ALL)) {
1796 ret = 0;
1797 goto out_free;
1798 }
1799 query.data = (char *)path;
1800 query.size = strlen(path) + 1;
1801 ret = send_callback_request(path_brother_callback, &query,
1802 get_row_pointer_from_result, &pb);
1803 if (ret < 0 && ret != -OSL_ERRNO_TO_PARA_ERROR(E_OSL_RB_KEY_NOT_FOUND))
1804 goto out_free;
1805 ret = 1;
1806 if (pb && (pad->flags & ADD_FLAG_LAZY)) { /* lazy is really cheap */
1807 if (pad->flags & ADD_FLAG_VERBOSE)
1808 send_ret = send_sb_va(&pad->cc->scc, SBD_OUTPUT,
1809 "lazy-ignore: %s\n", path);
1810 goto out_free;
1811 }
1812 /* We still want to add this file. Compute its hash. */
1813 ret = mmap_full_file(path, O_RDONLY, &map.data, &map.size, &fd);
1814 if (ret < 0)
1815 goto out_free;
1816 hash_function(map.data, map.size, hash);
1817
1818 /* Check whether the database contains a file with the same hash. */
1819 query.data = hash;
1820 query.size = HASH_SIZE;
1821 ret = send_callback_request(hash_sister_callback, &query,
1822 get_row_pointer_from_result, &hs);
1823 if (ret < 0)
1824 goto out_unmap;
1825 /* Return success if we already know this file. */
1826 ret = 1;
1827 if (pb && hs && hs == pb && !(pad->flags & ADD_FLAG_FORCE)) {
1828 if (pad->flags & ADD_FLAG_VERBOSE)
1829 send_ret = send_sb_va(&pad->cc->scc, SBD_OUTPUT,
1830 "%s exists, not forcing update\n", path);
1831 goto out_unmap;
1832 }
1833 /*
1834 * We won't recalculate the audio format info and the chunk table if
1835 * there is a hash sister and FORCE was not given.
1836 */
1837 if (!hs || (pad->flags & ADD_FLAG_FORCE)) {
1838 ret = compute_afhi(path, map.data, map.size, fd, &afhi);
1839 if (ret < 0)
1840 goto out_unmap;
1841 format_num = ret;
1842 afhi_ptr = &afhi;
1843 }
1844 munmap(map.data, map.size);
1845 close(fd);
1846 if (pad->flags & ADD_FLAG_VERBOSE) {
1847 send_ret = send_sb_va(&pad->cc->scc, SBD_OUTPUT,
1848 "adding %s\n", path);
1849 if (send_ret < 0)
1850 goto out_free;
1851 }
1852 save_add_callback_buffer(hash, path, afhi_ptr, pad->flags, format_num, &obj);
1853 /* Ask afs to consider this entry for adding. */
1854 ret = send_callback_request(com_add_callback, &obj,
1855 afs_cb_result_handler, pad->cc);
1856 goto out_free;
1857
1858 out_unmap:
1859 close(fd);
1860 munmap(map.data, map.size);
1861 out_free:
1862 if (ret < 0 && send_ret >= 0)
1863 send_ret = send_sb_va(&pad->cc->scc, SBD_ERROR_LOG,
1864 "failed to add %s (%s)\n", path, para_strerror(-ret));
1865 free(obj.data);
1866 clear_afhi(afhi_ptr);
1867 /* Stop adding files only on send errors. */
1868 return send_ret;
1869 }
1870
1871 int com_add(struct command_context *cc)
1872 {
1873 int i, ret;
1874 struct private_add_data pad = {.cc = cc, .flags = 0};
1875
1876 for (i = 1; i < cc->argc; i++) {
1877 const char *arg = cc->argv[i];
1878 if (arg[0] != '-')
1879 break;
1880 if (!strcmp(arg, "--")) {
1881 i++;
1882 break;
1883 }
1884 if (!strcmp(arg, "-a")) {
1885 pad.flags |= ADD_FLAG_ALL;
1886 continue;
1887 }
1888 if (!strcmp(arg, "-l")) {
1889 pad.flags |= ADD_FLAG_LAZY;
1890 continue;
1891 }
1892 if (!strcmp(arg, "-f")) {
1893 pad.flags |= ADD_FLAG_FORCE;
1894 continue;
1895 }
1896 if (!strcmp(arg, "-v")) {
1897 pad.flags |= ADD_FLAG_VERBOSE;
1898 continue;
1899 }
1900 }
1901 if (cc->argc <= i)
1902 return -E_AFT_SYNTAX;
1903 for (; i < cc->argc; i++) {
1904 char *path;
1905 ret = verify_path(cc->argv[i], &path);
1906 if (ret < 0) {
1907 ret = send_sb_va(&cc->scc, SBD_ERROR_LOG, "%s: %s\n",
1908 cc->argv[i], para_strerror(-ret));
1909 if (ret < 0)
1910 return ret;
1911 continue;
1912 }
1913 if (ret == 1) /* directory */
1914 ret = for_each_file_in_dir(path, add_one_audio_file,
1915 &pad);
1916 else /* regular file */
1917 ret = add_one_audio_file(path, &pad);
1918 if (ret < 0) {
1919 send_sb_va(&cc->scc, SBD_OUTPUT, "%s: %s\n", path,
1920 para_strerror(-ret));
1921 free(path);
1922 return ret;
1923 }
1924 free(path);
1925 }
1926 return 1;
1927 }
1928
1929 /**
1930 * Flags used by the touch command.
1931 *
1932 * \sa com_touch().
1933 */
1934 enum touch_flags {
1935 /** Whether the \p FNM_PATHNAME flag should be passed to fnmatch(). */
1936 TOUCH_FLAG_FNM_PATHNAME = 1,
1937 /** Activates verbose mode. */
1938 TOUCH_FLAG_VERBOSE = 2
1939 };
1940
1941 /** Options used by com_touch(). */
1942 struct com_touch_options {
1943 /** New num_played value. */
1944 int32_t num_played;
1945 /** New last played count. */
1946 int64_t last_played;
1947 /** New lyrics id. */
1948 int32_t lyrics_id;
1949 /** New image id. */
1950 int32_t image_id;
1951 /** New amplification value. */
1952 int32_t amp;
1953 /** Command line flags (see \ref touch_flags). */
1954 unsigned flags;
1955 };
1956
1957 /** Data passed to the action handler of com_touch(). */
1958 struct touch_action_data {
1959 /** Command line options (see \ref com_touch_options). */
1960 struct com_touch_options *cto;
1961 /** Message buffer. */
1962 struct para_buffer pb;
1963 };
1964
1965 static int touch_audio_file(__a_unused struct osl_table *table,
1966 struct osl_row *row, const char *name, void *data)
1967 {
1968 struct touch_action_data *tad = data;
1969 struct osl_object obj;
1970 struct afs_info old_afsi, new_afsi;
1971 int ret, no_options = tad->cto->num_played < 0 && tad->cto->last_played < 0 &&
1972 tad->cto->lyrics_id < 0 && tad->cto->image_id < 0 && tad->cto->amp < 0;
1973 struct afsi_change_event_data aced;
1974
1975 ret = get_afsi_object_of_row(row, &obj);
1976 if (ret < 0) {
1977 para_printf(&tad->pb, "cannot touch %s\n", name);
1978 return ret;
1979 }
1980 ret = load_afsi(&old_afsi, &obj);
1981 if (ret < 0) {
1982 para_printf(&tad->pb, "cannot touch %s\n", name);
1983 return ret;
1984 }
1985 new_afsi = old_afsi;
1986 if (no_options) {
1987 new_afsi.num_played++;
1988 new_afsi.last_played = time(NULL);
1989 if (tad->cto->flags & TOUCH_FLAG_VERBOSE)
1990 para_printf(&tad->pb, "%s: num_played = %u, "
1991 "last_played = now()\n", name,
1992 new_afsi.num_played);
1993 } else {
1994 if (tad->cto->flags & TOUCH_FLAG_VERBOSE)
1995 para_printf(&tad->pb, "touching %s\n", name);
1996 if (tad->cto->lyrics_id >= 0)
1997 new_afsi.lyrics_id = tad->cto->lyrics_id;
1998 if (tad->cto->image_id >= 0)
1999 new_afsi.image_id = tad->cto->image_id;
2000 if (tad->cto->num_played >= 0)
2001 new_afsi.num_played = tad->cto->num_played;
2002 if (tad->cto->last_played >= 0)
2003 new_afsi.last_played = tad->cto->last_played;
2004 if (tad->cto->amp >= 0)
2005 new_afsi.amp = tad->cto->amp;
2006 }
2007 save_afsi(&new_afsi, &obj); /* in-place update */
2008 aced.aft_row = row;
2009 aced.old_afsi = &old_afsi;
2010 afs_event(AFSI_CHANGE, &tad->pb, &aced);
2011 return 1;
2012 }
2013
2014 static int com_touch_callback(int fd, const struct osl_object *query)
2015 {
2016 struct touch_action_data tad = {.cto = query->data,
2017 .pb = {
2018 .max_size = shm_get_shmmax(),
2019 .private_data = &(struct afs_max_size_handler_data) {
2020 .fd = fd,
2021 .band = SBD_OUTPUT
2022 },
2023 .max_size_handler = afs_max_size_handler
2024 }
2025 };
2026 int ret;
2027 struct pattern_match_data pmd = {
2028 .table = audio_file_table,
2029 .loop_col_num = AFTCOL_HASH,
2030 .match_col_num = AFTCOL_PATH,
2031 .patterns = {.data = (char *)query->data + sizeof(*tad.cto),
2032 .size = query->size - sizeof(*tad.cto)},
2033 .data = &tad,
2034 .action = touch_audio_file
2035 };
2036 if (tad.cto->flags & TOUCH_FLAG_FNM_PATHNAME)
2037 pmd.fnmatch_flags |= FNM_PATHNAME;
2038 ret = for_each_matching_row(&pmd);
2039 if (ret >= 0 && pmd.num_matches == 0)
2040 ret = -E_NO_MATCH;
2041 flush_and_free_pb(&tad.pb);
2042 return ret;
2043 }
2044
2045 int com_touch(struct command_context *cc)
2046 {
2047 struct com_touch_options cto = {
2048 .num_played = -1,
2049 .last_played = -1,
2050 .lyrics_id = -1,
2051 .image_id = -1,
2052 .amp = -1,
2053 };
2054 struct osl_object query = {.data = &cto, .size = sizeof(cto)};
2055 int i, ret;
2056
2057
2058 for (i = 1; i < cc->argc; i++) {
2059 const char *arg = cc->argv[i];
2060 if (arg[0] != '-')
2061 break;
2062 if (!strcmp(arg, "--")) {
2063 i++;
2064 break;
2065 }
2066 if (!strncmp(arg, "-n=", 3)) {
2067 ret = para_atoi32(arg + 3, &cto.num_played);
2068 if (ret < 0)
2069 return ret;
2070 continue;
2071 }
2072 if (!strncmp(arg, "-l=", 3)) {
2073 ret = para_atoi64(arg + 3, &cto.last_played);
2074 if (ret < 0)
2075 return ret;
2076 continue;
2077 }
2078 if (!strncmp(arg, "-y=", 3)) {
2079 ret = para_atoi32(arg + 3, &cto.lyrics_id);
2080 if (ret < 0)
2081 return ret;
2082 continue;
2083 }
2084 if (!strncmp(arg, "-i=", 3)) {
2085 ret = para_atoi32(arg + 3, &cto.image_id);
2086 if (ret < 0)
2087 return ret;
2088 continue;
2089 }
2090 if (!strncmp(arg, "-a=", 3)) {
2091 int32_t val;
2092 ret = para_atoi32(arg + 3, &val);
2093 if (ret < 0)
2094 return ret;
2095 if (val < 0 || val > 255)
2096 return -ERRNO_TO_PARA_ERROR(EINVAL);
2097 cto.amp = val;
2098 continue;
2099 }
2100 if (!strcmp(arg, "-p")) {
2101 cto.flags |= TOUCH_FLAG_FNM_PATHNAME;
2102 continue;
2103 }
2104 if (!strcmp(arg, "-v")) {
2105 cto.flags |= TOUCH_FLAG_VERBOSE;
2106 continue;
2107 }
2108 break; /* non-option starting with dash */
2109 }
2110 if (i >= cc->argc)
2111 return -E_AFT_SYNTAX;
2112 return send_option_arg_callback_request(&query, cc->argc - i,
2113 cc->argv + i, com_touch_callback, afs_cb_result_handler, cc);
2114 }
2115
2116 /** Flags for com_rm(). */
2117 enum rm_flags {
2118 /** -v */
2119 RM_FLAG_VERBOSE = 1,
2120 /** -f */
2121 RM_FLAG_FORCE = 2,
2122 /** -p */
2123 RM_FLAG_FNM_PATHNAME = 4
2124 };
2125
2126 /** Data passed to the action handler of com_rm(). */
2127 struct com_rm_action_data {
2128 /** Command line flags ((see \ref rm_flags). */
2129 uint32_t flags;
2130 /** Message buffer. */
2131 struct para_buffer pb;
2132 };
2133
2134 static int remove_audio_file(__a_unused struct osl_table *table,
2135 struct osl_row *row, const char *name, void *data)
2136 {
2137 struct com_rm_action_data *crd = data;
2138 int ret;
2139
2140 if (crd->flags & RM_FLAG_VERBOSE)
2141 para_printf(&crd->pb, "removing %s\n", name);
2142 afs_event(AUDIO_FILE_REMOVE, &crd->pb, row);
2143 ret = osl(osl_del_row(audio_file_table, row));
2144 if (ret < 0)
2145 para_printf(&crd->pb, "%s: %s\n", name, para_strerror(-ret));
2146 return ret;
2147 }
2148
2149 static int com_rm_callback(int fd, const struct osl_object *query)
2150 {
2151 struct com_rm_action_data crd = {.flags = *(uint32_t *)query->data,
2152 .pb = {
2153 .max_size = shm_get_shmmax(),
2154 .private_data = &(struct afs_max_size_handler_data) {
2155 .fd = fd,
2156 .band = SBD_OUTPUT
2157 },
2158 .max_size_handler = afs_max_size_handler
2159 }
2160 };
2161 int ret;
2162 struct pattern_match_data pmd = {
2163 .table = audio_file_table,
2164 .loop_col_num = AFTCOL_HASH,
2165 .match_col_num = AFTCOL_PATH,
2166 .patterns = {.data = (char *)query->data + sizeof(uint32_t),
2167 .size = query->size - sizeof(uint32_t)},
2168 .data = &crd,
2169 .action = remove_audio_file
2170 };
2171 if (crd.flags & RM_FLAG_FNM_PATHNAME)
2172 pmd.fnmatch_flags |= FNM_PATHNAME;
2173 ret = for_each_matching_row(&pmd);
2174 if (ret < 0) {
2175 para_printf(&crd.pb, "%s\n", para_strerror(-ret));
2176 return 0;
2177 }
2178 if ((pmd.num_matches == 0) && !(crd.flags & RM_FLAG_FORCE))
2179 para_printf(&crd.pb, "no matches -- nothing removed\n");
2180 else if (crd.flags & RM_FLAG_VERBOSE)
2181 para_printf(&crd.pb, "removed %u files\n", pmd.num_matches);
2182 flush_and_free_pb(&crd.pb);
2183 return 0;
2184 }
2185
2186 /* TODO options: -r (recursive) */
2187 int com_rm(struct command_context *cc)
2188 {
2189 uint32_t flags = 0;
2190 struct osl_object query = {.data = &flags, .size = sizeof(flags)};
2191 int i, ret;
2192
2193 for (i = 1; i < cc->argc; i++) {
2194 const char *arg = cc->argv[i];
2195 if (arg[0] != '-')
2196 break;
2197 if (!strcmp(arg, "--")) {
2198 i++;
2199 break;
2200 }
2201 if (!strcmp(arg, "-f")) {
2202 flags |= RM_FLAG_FORCE;
2203 continue;
2204 }
2205 if (!strcmp(arg, "-p")) {
2206 flags |= RM_FLAG_FNM_PATHNAME;
2207 continue;
2208 }
2209 if (!strcmp(arg, "-v")) {
2210 flags |= RM_FLAG_VERBOSE;
2211 continue;
2212 }
2213 break;
2214 }
2215 if (i >= cc->argc)
2216 return -E_AFT_SYNTAX;
2217 ret = send_option_arg_callback_request(&query, cc->argc - i,
2218 cc->argv + i, com_rm_callback, afs_cb_result_handler, cc);
2219 if (ret < 0)
2220 send_strerror(cc, -ret);
2221 return ret;
2222 }
2223
2224 /**
2225 * Flags used by the cpsi command.
2226 *
2227 * \sa com_cpsi().
2228 */
2229 enum cpsi_flags {
2230 /** Whether the lyrics id should be copied. */
2231 CPSI_FLAG_COPY_LYRICS_ID = 1,
2232 /** Whether the image id should be copied. */
2233 CPSI_FLAG_COPY_IMAGE_ID = 2,
2234 /** Whether the lastplayed time should be copied. */
2235 CPSI_FLAG_COPY_LASTPLAYED = 4,
2236 /** Whether the numplayed count should be copied. */
2237 CPSI_FLAG_COPY_NUMPLAYED = 8,
2238 /** Whether the attributes should be copied. */
2239 CPSI_FLAG_COPY_ATTRIBUTES = 16,
2240 /** Activates verbose mode. */
2241 CPSI_FLAG_VERBOSE = 32,
2242 };
2243
2244 /** Data passed to the action handler of com_cpsi(). */
2245 struct cpsi_action_data {
2246 /** command line flags (see \ref cpsi_flags). */
2247 unsigned flags;
2248 /** Message buffer. */
2249 struct para_buffer pb;
2250 /** Values are copied from here. */
2251 struct afs_info source_afsi;
2252 };
2253
2254 static int copy_selector_info(__a_unused struct osl_table *table,
2255 struct osl_row *row, const char *name, void *data)
2256 {
2257 struct cpsi_action_data *cad = data;
2258 struct osl_object target_afsi_obj;
2259 int ret;
2260 struct afs_info old_afsi, target_afsi;
2261 struct afsi_change_event_data aced;
2262
2263 ret = get_afsi_object_of_row(row, &target_afsi_obj);
2264 if (ret < 0)
2265 return ret;
2266 load_afsi(&target_afsi, &target_afsi_obj);
2267 old_afsi = target_afsi;
2268 if (cad->flags & CPSI_FLAG_COPY_LYRICS_ID)
2269 target_afsi.lyrics_id = cad->source_afsi.lyrics_id;
2270 if (cad->flags & CPSI_FLAG_COPY_IMAGE_ID)
2271 target_afsi.image_id = cad->source_afsi.image_id;
2272 if (cad->flags & CPSI_FLAG_COPY_LASTPLAYED)
2273 target_afsi.last_played = cad->source_afsi.last_played;
2274 if (cad->flags & CPSI_FLAG_COPY_NUMPLAYED)
2275 target_afsi.num_played = cad->source_afsi.num_played;
2276 if (cad->flags & CPSI_FLAG_COPY_ATTRIBUTES)
2277 target_afsi.attributes = cad->source_afsi.attributes;
2278 save_afsi(&target_afsi, &target_afsi_obj); /* in-place update */
2279 if (cad->flags & CPSI_FLAG_VERBOSE)
2280 para_printf(&cad->pb, "copied afsi to %s\n", name);
2281 aced.aft_row = row;
2282 aced.old_afsi = &old_afsi;
2283 afs_event(AFSI_CHANGE, &cad->pb, &aced);
2284 return 1;
2285 }
2286
2287 static int com_cpsi_callback(int fd, const struct osl_object *query)
2288 {
2289 struct cpsi_action_data cad = {
2290 .flags = *(unsigned *)query->data,
2291 .pb = {
2292 .max_size = shm_get_shmmax(),
2293 .private_data = &(struct afs_max_size_handler_data) {
2294 .fd = fd,
2295 .band = SBD_OUTPUT
2296 },
2297 .max_size_handler = afs_max_size_handler
2298 }
2299 };
2300 int ret;
2301 char *source_path = (char *)query->data + sizeof(cad.flags);
2302 struct pattern_match_data pmd = {
2303 .table = audio_file_table,
2304 .loop_col_num = AFTCOL_HASH,
2305 .match_col_num = AFTCOL_PATH,
2306 .patterns = {.data = source_path + strlen(source_path) + 1,
2307 .size = query->size - sizeof(cad.flags)
2308 - strlen(source_path) - 1},
2309 .data = &cad,
2310 .action = copy_selector_info
2311 };
2312
2313 ret = get_afsi_of_path(source_path, &cad.source_afsi);
2314 if (ret < 0)
2315 goto out;
2316 ret = for_each_matching_row(&pmd);
2317 out:
2318 if (ret < 0)
2319 para_printf(&cad.pb, "%s\n", para_strerror(-ret));
2320 else if (pmd.num_matches > 0) {
2321 if (cad.flags & CPSI_FLAG_VERBOSE)
2322 para_printf(&cad.pb, "copied requested afsi from %s "
2323 "to %u files\n", source_path, pmd.num_matches);
2324 } else
2325 para_printf(&cad.pb, "no matches - nothing copied\n");
2326 flush_and_free_pb(&cad.pb);
2327 return 0;
2328 }
2329
2330 int com_cpsi(struct command_context *cc)
2331 {
2332 unsigned flags = 0;
2333 int i, ret;
2334 struct osl_object options = {.data = &flags, .size = sizeof(flags)};
2335
2336 for (i = 1; i < cc->argc; i++) {
2337 const char *arg = cc->argv[i];
2338 if (arg[0] != '-')
2339 break;
2340 if (!strcmp(arg, "--")) {
2341 i++;
2342 break;
2343 }
2344 if (!strcmp(arg, "-y")) {
2345 flags |= CPSI_FLAG_COPY_LYRICS_ID;
2346 continue;
2347 }
2348 if (!strcmp(arg, "-i")) {
2349 flags |= CPSI_FLAG_COPY_IMAGE_ID;
2350 continue;
2351 }
2352 if (!strcmp(arg, "-l")) {
2353 flags |= CPSI_FLAG_COPY_LASTPLAYED;
2354 continue;
2355 }
2356 if (!strcmp(arg, "-n")) {
2357 flags |= CPSI_FLAG_COPY_NUMPLAYED;
2358 continue;
2359 }
2360 if (!strcmp(arg, "-a")) {
2361 flags |= CPSI_FLAG_COPY_ATTRIBUTES;
2362 continue;
2363 }
2364 if (!strcmp(arg, "-v")) {
2365 flags |= CPSI_FLAG_VERBOSE;
2366 continue;
2367 }
2368 break;
2369 }
2370 if (i + 1 >= cc->argc) /* need at least source file and pattern */
2371 return -E_AFT_SYNTAX;
2372 if (!(flags & ~CPSI_FLAG_VERBOSE)) /* no copy flags given */
2373 flags = ~(unsigned)CPSI_FLAG_VERBOSE | flags;
2374 ret = send_option_arg_callback_request(&options, cc->argc - i,
2375 cc->argv + i, com_cpsi_callback, afs_cb_result_handler, cc);
2376 if (ret < 0)
2377 send_strerror(cc, -ret);
2378 return ret;
2379 }
2380
2381 struct change_atts_data {
2382 uint64_t add_mask, del_mask;
2383 struct para_buffer pb;
2384 };
2385
2386 static int change_atts(__a_unused struct osl_table *table,
2387 struct osl_row *row, __a_unused const char *name, void *data)
2388 {
2389 int ret;
2390 struct osl_object obj;
2391 struct afs_info old_afsi, new_afsi;
2392 struct afsi_change_event_data aced = {
2393 .aft_row = row,
2394 .old_afsi = &old_afsi
2395 };
2396 struct change_atts_data *cad = data;
2397
2398 ret = get_afsi_object_of_row(row, &obj);
2399 if (ret < 0)
2400 return ret;
2401 ret = load_afsi(&old_afsi, &obj);
2402 if (ret < 0)
2403 return ret;
2404 new_afsi = old_afsi;
2405 new_afsi.attributes |= cad->add_mask;
2406 new_afsi.attributes &= ~cad->del_mask;
2407 save_afsi(&new_afsi, &obj); /* in-place update */
2408 afs_event(AFSI_CHANGE, &cad->pb, &aced);
2409 return 1;
2410 }
2411
2412 static int com_setatt_callback(int fd, const struct osl_object *query)
2413 {
2414 char *p;
2415 int ret;
2416 size_t len;
2417 struct change_atts_data cad = {
2418 .pb = {
2419 .max_size = shm_get_shmmax(),
2420 .max_size_handler = afs_max_size_handler,
2421 .private_data = &(struct afs_max_size_handler_data) {
2422 .fd = fd,
2423 .band = SBD_OUTPUT
2424 }
2425 }
2426 };
2427 struct pattern_match_data pmd = {
2428 .table = audio_file_table,
2429 .loop_col_num = AFTCOL_HASH,
2430 .match_col_num = AFTCOL_PATH,
2431 .pm_flags = PM_SKIP_EMPTY_NAME,
2432 .data = &cad,
2433 .action = change_atts
2434 };
2435
2436 for (p = query->data; p < (char *)query->data + query->size; p += len + 1) {
2437 char c;
2438 unsigned char bitnum;
2439
2440 len = strlen(p);
2441 ret = -E_ATTR_SYNTAX;
2442 if (len == 0)
2443 goto out;
2444 c = p[len - 1];
2445 if (c != '+' && c != '-')
2446 break;
2447 p[len - 1] = '\0';
2448 ret = get_attribute_bitnum_by_name(p, &bitnum);
2449 if (ret < 0) {
2450 para_printf(&cad.pb, "attribute not found: %s\n", p);
2451 goto out;
2452 }
2453 if (c == '+')
2454 cad.add_mask |= (1UL << bitnum);
2455 else
2456 cad.del_mask |= (1UL << bitnum);
2457 }
2458 ret = -E_ATTR_SYNTAX;
2459 if (!cad.add_mask && !cad.del_mask)
2460 goto out;
2461 pmd.patterns.data = p;
2462 assert(p < (char *)query->data + query->size);
2463 pmd.patterns.size = (char *)query->data + query->size - p;
2464 ret = for_each_matching_row(&pmd);
2465 if (ret < 0)
2466 goto out;
2467 if (pmd.num_matches == 0)
2468 para_printf(&cad.pb, "no matches\n");
2469 out:
2470 if (ret < 0)
2471 para_printf(&cad.pb, "%s\n", para_strerror(-ret));
2472 flush_and_free_pb(&cad.pb);
2473 return 0;
2474 }
2475
2476 int com_setatt(struct command_context *cc)
2477 {
2478 if (cc->argc < 3)
2479 return -E_ATTR_SYNTAX;
2480 return send_standard_callback_request(cc->argc - 1, cc->argv + 1,
2481 com_setatt_callback, afs_cb_result_handler, cc);
2482 }
2483
2484 static int afs_stat_callback(int fd, const struct osl_object *query)
2485 {
2486 int *parser_friendly = query->data;
2487 char *buf = *parser_friendly?
2488 parser_friendly_status_items : status_items;
2489
2490 if (!buf)
2491 return 0;
2492 return pass_buffer_as_shm(fd, SBD_OUTPUT, buf, strlen(buf));
2493 }
2494
2495 /**
2496 * Get the current afs status items from the afs process and send it.
2497 *
2498 * \param cc The command context, used e.g. for data encryption.
2499 * \param parser_friendly Whether parser-friendly output format should be used.
2500 *
2501 * As the contents of the afs status items change in time and the command
2502 * handler only has a COW version created at fork time, it can not send
2503 * up-to-date afs status items directly. Therefore the usual callback mechanism
2504 * is used to pass the status items from the afs process to the command handler
2505 * via a shared memory area and a pipe.
2506 *
2507 * \return The return value of the underlying call to \ref send_callback_request().
2508 */
2509 int send_afs_status(struct command_context *cc, int parser_friendly)
2510 {
2511 struct osl_object query = {.data = &parser_friendly,
2512 .size = sizeof(parser_friendly)};
2513
2514 return send_callback_request(afs_stat_callback, &query,
2515 afs_cb_result_handler, cc);
2516 }
2517
2518 /* returns success even on errors to keep the loop going */
2519 static int check_audio_file(struct osl_row *row, void *data)
2520 {
2521 char *path;
2522 struct para_buffer *pb = data;
2523 struct stat statbuf;
2524 int ret = get_audio_file_path_of_row(row, &path);
2525 struct afs_info afsi;
2526 char *blob_name;
2527
2528 if (ret < 0) {
2529 para_printf(pb, "%s\n", para_strerror(-ret));
2530 return 0;
2531 }
2532 if (stat(path, &statbuf) < 0)
2533 para_printf(pb, "%s: stat error (%s)\n", path, strerror(errno));
2534 else if (!S_ISREG(statbuf.st_mode))
2535 para_printf(pb, "%s: not a regular file\n", path);
2536 ret = get_afsi_of_row(row, &afsi);
2537 if (ret < 0) {
2538 para_printf(pb, "%s: %s\n", path, para_strerror(-ret));
2539 return 1;
2540 }
2541 ret = lyr_get_name_by_id(afsi.lyrics_id, &blob_name);
2542 if (ret < 0)
2543 para_printf(pb, "%s lyrics id %u: %s\n", path, afsi.lyrics_id,
2544 para_strerror(-ret));
2545 ret = img_get_name_by_id(afsi.image_id, &blob_name);
2546 if (ret < 0)
2547 para_printf(pb, "%s image id %u: %s\n", path, afsi.image_id,
2548 para_strerror(-ret));
2549 return 0;
2550 }
2551
2552 /**
2553 * Check the audio file table for inconsistencies.
2554 *
2555 * \param fd The afs socket.
2556 * \param query Unused.
2557 *
2558 * \return This function always returns zero.
2559 *
2560 * \sa com_check().
2561 */
2562 int aft_check_callback(int fd, __a_unused const struct osl_object *query)
2563 {
2564 struct para_buffer pb = {
2565 .max_size = shm_get_shmmax(),
2566 .private_data = &(struct afs_max_size_handler_data) {
2567 .fd = fd,
2568 .band = SBD_OUTPUT
2569 },
2570 .max_size_handler = afs_max_size_handler
2571 };
2572 para_printf(&pb, "checking audio file table...\n");
2573 audio_file_loop(&pb, check_audio_file);
2574 flush_and_free_pb(&pb);
2575 return 0;
2576 }
2577
2578 /**
2579 * Close the audio file table.
2580 *
2581 * \param flags Usual flags that are passed to osl_close_table().
2582 *
2583 * \sa osl_close_table().
2584 */
2585 static void aft_close(void)
2586 {
2587 osl_close_table(audio_file_table, OSL_MARK_CLEAN);
2588 audio_file_table = NULL;
2589 }
2590
2591 /**
2592 * Open the audio file table.
2593 *
2594 * \param dir The database directory.
2595 *
2596 * \return Standard.
2597 *
2598 * \sa osl_open_table().
2599 */
2600 static int aft_open(const char *dir)
2601 {
2602 int ret;
2603
2604 audio_file_table_desc.dir = dir;
2605 ret = osl(osl_open_table(&audio_file_table_desc, &audio_file_table));
2606 if (ret >= 0) {
2607 unsigned num;
2608 osl_get_num_rows(audio_file_table, &num);
2609 PARA_INFO_LOG("audio file table contains %d files\n", num);
2610 return ret;
2611 }
2612 PARA_NOTICE_LOG("failed to open audio file table\n");
2613 audio_file_table = NULL;
2614 if (ret == -OSL_ERRNO_TO_PARA_ERROR(E_OSL_NOENT))
2615 return 1;
2616 return ret;
2617 }
2618
2619 static int aft_create(const char *dir)
2620 {
2621 audio_file_table_desc.dir = dir;
2622 return osl(osl_create_table(&audio_file_table_desc));
2623 }
2624
2625 static int clear_attribute(struct osl_row *row, void *data)
2626 {
2627 struct rmatt_event_data *red = data;
2628 struct afs_info afsi;
2629 struct osl_object obj;
2630 int ret = get_afsi_object_of_row(row, &obj);
2631 uint64_t mask = ~(1ULL << red->bitnum);
2632
2633 if (ret < 0)
2634 return ret;
2635 ret = load_afsi(&afsi, &obj);
2636 if (ret < 0)
2637 return ret;
2638 afsi.attributes &= mask;
2639 save_afsi(&afsi, &obj);
2640 return 1;
2641 }
2642
2643 static int aft_event_handler(enum afs_events event, struct para_buffer *pb,
2644 void *data)
2645 {
2646 int ret;
2647
2648 switch (event) {
2649 case ATTRIBUTE_REMOVE: {
2650 const struct rmatt_event_data *red = data;
2651 para_printf(pb, "clearing attribute %s (bit %u) from all "
2652 "entries in the audio file table\n", red->name,
2653 red->bitnum);
2654 return audio_file_loop(data, clear_attribute);
2655 } case AFSI_CHANGE: {
2656 struct afsi_change_event_data *aced = data;
2657 uint64_t old_last_played = status_item_ls_data.afsi.last_played;
2658 if (aced->aft_row != current_aft_row)
2659 return 0;
2660 ret = get_afsi_of_row(aced->aft_row, &status_item_ls_data.afsi);
2661 if (ret < 0)
2662 return ret;
2663 status_item_ls_data.afsi.last_played = old_last_played;
2664 make_status_items();
2665 return 1;
2666 } case AFHI_CHANGE: {
2667 if (data != current_aft_row)
2668 return 0;
2669 ret = get_afhi_of_row(data, &status_item_ls_data.afhi);
2670 if (ret < 0)
2671 return ret;
2672 make_status_items();
2673 return 1;
2674 } default:
2675 return 0;
2676 }
2677 }
2678
2679 /**
2680 * Initialize the audio file table.
2681 *
2682 * \param t Pointer to the structure to be initialized.
2683 */
2684 void aft_init(struct afs_table *t)
2685 {
2686 t->open = aft_open;
2687 t->close = aft_close;
2688 t->create = aft_create;
2689 t->event_handler = aft_event_handler;
2690 }