Introduce afs_max_size_handler_data and afs_max_size_handler().
[paraslash.git] / aft.c
1 /*
2 * Copyright (C) 2007-2012 Andre Noll <maan@systemlinux.org>
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 "command.h"
25
26 static struct osl_table *audio_file_table;
27 static char *status_items;
28 static char *parser_friendly_status_items;
29
30 /** The different sorting methods of the ls command. */
31 enum ls_sorting_method {
32 /** -sp (default) */
33 LS_SORT_BY_PATH,
34 /** -ss */
35 LS_SORT_BY_SCORE,
36 /** -sl */
37 LS_SORT_BY_LAST_PLAYED,
38 /** -sn */
39 LS_SORT_BY_NUM_PLAYED,
40 /** -sf */
41 LS_SORT_BY_FREQUENCY,
42 /** -sc */
43 LS_SORT_BY_CHANNELS,
44 /** -si */
45 LS_SORT_BY_IMAGE_ID,
46 /** -sy */
47 LS_SORT_BY_LYRICS_ID,
48 /** -sb */
49 LS_SORT_BY_BITRATE,
50 /** -sd */
51 LS_SORT_BY_DURATION,
52 /** -sa */
53 LS_SORT_BY_AUDIO_FORMAT,
54 /** -sh */
55 LS_SORT_BY_HASH,
56 };
57
58 /** The different listing modes of the ls command. */
59 enum ls_listing_mode {
60 /** Default listing mode. */
61 LS_MODE_SHORT,
62 /** -l or -ll */
63 LS_MODE_LONG,
64 /** -lv */
65 LS_MODE_VERBOSE,
66 /** -lm */
67 LS_MODE_MBOX,
68 /** -lc */
69 LS_MODE_CHUNKS,
70 /** -lp */
71 LS_MODE_PARSER,
72 };
73
74 /** The flags accepted by the ls command. */
75 enum ls_flags {
76 /** -p */
77 LS_FLAG_FULL_PATH = 1,
78 /** -a */
79 LS_FLAG_ADMISSIBLE_ONLY = 2,
80 /** -r */
81 LS_FLAG_REVERSE = 4,
82 /** -d */
83 LS_FLAG_UNIXDATE = 8,
84 };
85
86 /**
87 * The size of the individual output fields of the ls command.
88 *
89 * These depend on the actual content being listed. If, for instance only files
90 * with duration less than an hour are being listed, then the duration with is
91 * made smaller because then the duration is listed as mm:ss rather than
92 * hh:mm:ss.
93 */
94 struct ls_widths {
95 /** size of the score field. */
96 unsigned short score_width;
97 /** size of the image id field. */
98 unsigned short image_id_width;
99 /** size of the lyrics id field. */
100 unsigned short lyrics_id_width;
101 /** size of the bitrate field. */
102 unsigned short bitrate_width;
103 /** size of the frequency field. */
104 unsigned short frequency_width;
105 /** size of the duration field. */
106 unsigned short duration_width;
107 /** size of the num played field. */
108 unsigned short num_played_width;
109 /** size of the amp field. */
110 unsigned short amp_width;
111 /** size of the audio format field. */
112 unsigned short audio_format_width;
113 };
114
115 /** Data passed from the ls command handler to its callback function. */
116 struct ls_options {
117 /** The given command line flags. */
118 unsigned flags;
119 /** The sorting method given at the command line. */
120 enum ls_sorting_method sorting;
121 /** The given listing mode (short, long, verbose, mbox). */
122 enum ls_listing_mode mode;
123 /** The arguments passed to the ls command. */
124 char **patterns;
125 /** Number of non-option arguments. */
126 int num_patterns;
127 /** Used for long listing mode to align the output fields. */
128 struct ls_widths widths;
129 /** Size of the \a data array. */
130 uint32_t array_size;
131 /** Number of used entries in the data array. */
132 uint32_t num_matching_paths;
133 /** Array of matching entries. */
134 struct ls_data *data;
135 /** Used to sort the array. */
136 struct ls_data **data_ptr;
137 };
138
139 /**
140 * Describes the layout of the mmapped-afs info struct.
141 *
142 * \sa struct afs_info.
143 */
144 enum afsi_offsets {
145 /** Where .last_played is stored. */
146 AFSI_LAST_PLAYED_OFFSET = 0,
147 /** Storage position of the attributes bitmap. */
148 AFSI_ATTRIBUTES_OFFSET = 8,
149 /** Storage position of the .num_played field. */
150 AFSI_NUM_PLAYED_OFFSET = 16,
151 /** Storage position of the .image_id field. */
152 AFSI_IMAGE_ID_OFFSET = 20,
153 /** Storage position of the .lyrics_id field. */
154 AFSI_LYRICS_ID_OFFSET = 24,
155 /** Storage position of the .audio_format_id field. */
156 AFSI_AUDIO_FORMAT_ID_OFFSET = 28,
157 /** Storage position of the amplification field. */
158 AFSI_AMP_OFFSET = 29,
159 /** 2 bytes reserved space for future usage. */
160 AFSI_AUDIO_FORMAT_UNUSED_OFFSET = 30,
161 /** On-disk storage space needed. */
162 AFSI_SIZE = 32
163 };
164
165 /**
166 * Convert a struct afs_info to an osl object.
167 *
168 * \param afsi Pointer to the audio file info to be converted.
169 * \param obj Result pointer.
170 *
171 * \sa load_afsi().
172 */
173 void save_afsi(struct afs_info *afsi, struct osl_object *obj)
174 {
175 char *buf = obj->data;
176
177 write_u64(buf + AFSI_LAST_PLAYED_OFFSET, afsi->last_played);
178 write_u64(buf + AFSI_ATTRIBUTES_OFFSET, afsi->attributes);
179 write_u32(buf + AFSI_NUM_PLAYED_OFFSET, afsi->num_played);
180 write_u32(buf + AFSI_IMAGE_ID_OFFSET, afsi->image_id);
181 write_u32(buf + AFSI_LYRICS_ID_OFFSET, afsi->lyrics_id);
182 write_u8(buf + AFSI_AUDIO_FORMAT_ID_OFFSET,
183 afsi->audio_format_id);
184 write_u8(buf + AFSI_AMP_OFFSET, afsi->amp);
185 memset(buf + AFSI_AUDIO_FORMAT_UNUSED_OFFSET, 0, 2);
186 }
187
188 /**
189 * Get the audio file selector info struct stored in an osl object.
190 *
191 * \param afsi Points to the audio_file info structure to be filled in.
192 * \param obj The osl object holding the data.
193 *
194 * \return Positive on success, negative on errors. Possible errors: \p E_BAD_AFS.
195 *
196 * \sa save_afsi().
197 */
198 int load_afsi(struct afs_info *afsi, struct osl_object *obj)
199 {
200 char *buf = obj->data;
201 if (obj->size < AFSI_SIZE)
202 return -E_BAD_AFSI;
203 afsi->last_played = read_u64(buf + AFSI_LAST_PLAYED_OFFSET);
204 afsi->attributes = read_u64(buf + AFSI_ATTRIBUTES_OFFSET);
205 afsi->num_played = read_u32(buf + AFSI_NUM_PLAYED_OFFSET);
206 afsi->image_id = read_u32(buf + AFSI_IMAGE_ID_OFFSET);
207 afsi->lyrics_id = read_u32(buf + AFSI_LYRICS_ID_OFFSET);
208 afsi->audio_format_id = read_u8(buf +
209 AFSI_AUDIO_FORMAT_ID_OFFSET);
210 afsi->amp = read_u8(buf + AFSI_AMP_OFFSET);
211 return 1;
212 }
213
214 /** The columns of the audio file table. */
215 enum audio_file_table_columns {
216 /** The hash on the content of the audio file. */
217 AFTCOL_HASH,
218 /** The full path in the filesystem. */
219 AFTCOL_PATH,
220 /** The audio file selector info. */
221 AFTCOL_AFSI,
222 /** The audio format handler info. */
223 AFTCOL_AFHI,
224 /** The chunk table info and the chunk table of the audio file. */
225 AFTCOL_CHUNKS,
226 /** The number of columns of this table. */
227 NUM_AFT_COLUMNS
228 };
229
230 /**
231 * Compare two osl objects pointing to hash values.
232 *
233 * \param obj1 Pointer to the first hash object.
234 * \param obj2 Pointer to the second hash object.
235 *
236 * \return The values required for an osl compare function.
237 *
238 * \sa osl_compare_func, uint32_compare().
239 */
240 static int aft_hash_compare(const struct osl_object *obj1, const struct osl_object *obj2)
241 {
242 return hash_compare((unsigned char *)obj1->data, (unsigned char *)obj2->data);
243 }
244
245 static struct osl_column_description aft_cols[] = {
246 [AFTCOL_HASH] = {
247 .storage_type = OSL_MAPPED_STORAGE,
248 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE | OSL_UNIQUE,
249 .name = "hash",
250 .compare_function = aft_hash_compare,
251 .data_size = HASH_SIZE
252 },
253 [AFTCOL_PATH] = {
254 .storage_type = OSL_MAPPED_STORAGE,
255 .storage_flags = OSL_RBTREE | OSL_UNIQUE,
256 .name = "path",
257 .compare_function = string_compare,
258 },
259 [AFTCOL_AFSI] = {
260 .storage_type = OSL_MAPPED_STORAGE,
261 .storage_flags = OSL_FIXED_SIZE,
262 .name = "afs_info",
263 .data_size = AFSI_SIZE
264 },
265 [AFTCOL_AFHI] = {
266 .storage_type = OSL_MAPPED_STORAGE,
267 .name = "afh_info",
268 },
269 [AFTCOL_CHUNKS] = {
270 .storage_type = OSL_DISK_STORAGE,
271 .name = "chunks",
272 }
273 };
274
275 static struct osl_table_description audio_file_table_desc = {
276 .name = "audio_files",
277 .num_columns = NUM_AFT_COLUMNS,
278 .flags = OSL_LARGE_TABLE,
279 .column_descriptions = aft_cols
280 };
281
282 /* We don't want * dot or dot-dot anywhere. */
283 static int verify_dotfile(const char *rest)
284 {
285 /*
286 * The first character was '.', but that has already been discarded, we
287 * now test the rest.
288 */
289 switch (*rest) {
290 case '\0': case '/': /* /foo/. and /foo/./bar are not ok */
291 return -1;
292 case '.': /* path start with /foo/.. */
293 if (rest[1] == '\0' || rest[1] == '/')
294 return -1; /* /foo/.. or /foo/../bar are not ok */
295 /* /foo/..bar is ok */
296 }
297 return 1;
298 }
299
300 /*
301 * We fundamentally don't like some paths: We don't want double slashes or
302 * slashes at the end that can make pathnames ambiguous.
303 */
304 static int verify_path(const char *orig_path, char **resolved_path)
305 {
306 char c;
307 size_t len;
308 char *path;
309
310 if (*orig_path != '/') /* we only accept absolute paths */
311 return -E_BAD_PATH;
312 len = strlen(orig_path);
313 *resolved_path = para_strdup(orig_path);
314 path = *resolved_path;
315 while (len > 1 && path[--len] == '/')
316 path[len] = '\0'; /* remove slash at the end */
317 c = *path++;
318 while (c) {
319 if (c == '/') {
320 c = *path++;
321 switch (c) {
322 case '/': /* double slash */
323 goto bad_path;
324 case '.':
325 if (verify_dotfile(path) < 0)
326 goto bad_path;
327 default:
328 continue;
329 }
330 }
331 c = *path++;
332 }
333 return 1;
334 bad_path:
335 free(*resolved_path);
336 return -E_BAD_PATH;
337 }
338
339 /** The on-disk layout of a afhi struct. */
340 enum afhi_offsets {
341 /** Where the number of seconds is stored. */
342 AFHI_SECONDS_TOTAL_OFFSET = 0,
343 /** Position of the bitrate. */
344 AFHI_BITRATE_OFFSET = 4,
345 /** Position of the frequency. */
346 AFHI_FREQUENCY_OFFSET = 8,
347 /** Was: Location of the audio file header. */
348 AFHI_UNUSED1_OFFSET = 12,
349 /* Length of the audio file header. Zero means: No header. */
350 AFHI_HEADER_LEN_OFFSET = 16,
351 /** The total number of chunks (4 bytes). */
352 CHUNKS_TOTAL_OFFSET = 20,
353 /** The length of the audio file header (4 bytes). */
354 HEADER_LEN_OFFSET = 24,
355 /** Was: The start of the audio file header (4 bytes). */
356 AFHI_UNUSED2_OFFSET = 28,
357 /** The seconds part of the chunk time (4 bytes). */
358 CHUNK_TV_TV_SEC_OFFSET = 32,
359 /** The microseconds part of the chunk time (4 bytes). */
360 CHUNK_TV_TV_USEC_OFFSET = 36,
361 /** Number of channels is stored here. (1 byte) */
362 AFHI_CHANNELS_OFFSET = 40,
363 /** The tag info position. */
364 AFHI_INFO_STRING_OFFSET = 41,
365 /** Minimal on-disk size of a valid afhi struct. */
366 MIN_AFHI_SIZE = 47, /* at least 6 null bytes for techinfo/tags */
367 };
368
369 static unsigned sizeof_afhi_buf(const struct afh_info *afhi)
370 {
371 if (!afhi)
372 return 0;
373 return MIN_AFHI_SIZE
374 + strlen(afhi->techinfo)
375 + strlen(afhi->tags.artist)
376 + strlen(afhi->tags.title)
377 + strlen(afhi->tags.year)
378 + strlen(afhi->tags.album)
379 + strlen(afhi->tags.comment);
380 }
381
382 static void save_afhi(struct afh_info *afhi, char *buf)
383 {
384 char *p;
385
386 if (!afhi)
387 return;
388 write_u32(buf + AFHI_SECONDS_TOTAL_OFFSET, afhi->seconds_total);
389 write_u32(buf + AFHI_BITRATE_OFFSET, afhi->bitrate);
390 write_u32(buf + AFHI_FREQUENCY_OFFSET, afhi->frequency);
391 write_u32(buf + AFHI_UNUSED1_OFFSET, 0);
392 write_u32(buf + AFHI_HEADER_LEN_OFFSET, afhi->header_len);
393 write_u8(buf + AFHI_CHANNELS_OFFSET, afhi->channels);
394 write_u32(buf + CHUNKS_TOTAL_OFFSET, afhi->chunks_total);
395 write_u32(buf + HEADER_LEN_OFFSET, afhi->header_len);
396 write_u32(buf + AFHI_UNUSED2_OFFSET, 0);
397 write_u32(buf + CHUNK_TV_TV_SEC_OFFSET, afhi->chunk_tv.tv_sec);
398 write_u32(buf + CHUNK_TV_TV_USEC_OFFSET, afhi->chunk_tv.tv_usec);
399 p = buf + AFHI_INFO_STRING_OFFSET;
400 /* The sprintf's below are OK as our caller made sure that buf is large enough */
401 p += sprintf(p, "%s", afhi->techinfo) + 1;
402 p += sprintf(p, "%s", afhi->tags.artist) + 1;
403 p += sprintf(p, "%s", afhi->tags.title) + 1;
404 p += sprintf(p, "%s", afhi->tags.year) + 1;
405 p += sprintf(p, "%s", afhi->tags.album) + 1;
406 sprintf(p, "%s", afhi->tags.comment);
407 }
408
409 static void load_afhi(const char *buf, struct afh_info *afhi)
410 {
411 afhi->seconds_total = read_u32(buf + AFHI_SECONDS_TOTAL_OFFSET);
412 afhi->bitrate = read_u32(buf + AFHI_BITRATE_OFFSET);
413 afhi->frequency = read_u32(buf + AFHI_FREQUENCY_OFFSET);
414 afhi->header_len = read_u32(buf + AFHI_HEADER_LEN_OFFSET);
415 afhi->channels = read_u8(buf + AFHI_CHANNELS_OFFSET);
416 afhi->chunks_total = read_u32(buf + CHUNKS_TOTAL_OFFSET);
417 afhi->header_len = read_u32(buf + HEADER_LEN_OFFSET);
418 afhi->chunk_tv.tv_sec = read_u32(buf + CHUNK_TV_TV_SEC_OFFSET);
419 afhi->chunk_tv.tv_usec = read_u32(buf + CHUNK_TV_TV_USEC_OFFSET);
420 afhi->techinfo = (char *)buf + AFHI_INFO_STRING_OFFSET;
421 afhi->tags.artist = afhi->techinfo + strlen(afhi->techinfo) + 1;
422 afhi->tags.title = afhi->tags.artist + strlen(afhi->tags.artist) + 1;
423 afhi->tags.year = afhi->tags.title + strlen(afhi->tags.title) + 1;
424 afhi->tags.album = afhi->tags.year + strlen(afhi->tags.year) + 1;
425 afhi->tags.comment = afhi->tags.album + strlen(afhi->tags.album) + 1;
426 }
427
428 static unsigned sizeof_chunk_table(struct afh_info *afhi)
429 {
430 if (!afhi)
431 return 0;
432 return 4 * (afhi->chunks_total + 1);
433 }
434
435 static uint32_t save_chunk_table(struct afh_info *afhi, char *buf)
436 {
437 int i;
438 uint32_t max = 0, old = 0;
439
440 for (i = 0; i <= afhi->chunks_total; i++) {
441 uint32_t val = afhi->chunk_table[i];
442 write_u32(buf + 4 * i, val);
443 /*
444 * If the first chunk is the header, do not consider it for the
445 * calculation of the largest chunk size.
446 */
447 if (i == 0 || (i == 1 && afhi->header_len > 0)) {
448 old = val;
449 continue;
450 }
451 max = PARA_MAX(max, val - old);
452 old = val;
453 }
454 return max;
455 }
456
457 static void load_chunk_table(struct afh_info *afhi, char *buf)
458 {
459 int i;
460
461 afhi->chunk_table = para_malloc(sizeof_chunk_table(afhi));
462 for (i = 0; i <= afhi->chunks_total; i++)
463 afhi->chunk_table[i] = read_u32(buf + 4 * i);
464 }
465
466 /**
467 * Get the row of the audio file table corresponding to the given path.
468 *
469 * \param path The full path of the audio file.
470 * \param row Result pointer.
471 *
472 * \return Standard.
473 */
474 int aft_get_row_of_path(const char *path, struct osl_row **row)
475 {
476 struct osl_object obj = {.data = (char *)path, .size = strlen(path) + 1};
477
478 return osl(osl_get_row(audio_file_table, AFTCOL_PATH, &obj, row));
479 }
480
481 /**
482 * Get the row of the audio file table corresponding to the given hash value.
483 *
484 * \param hash The hash value of the desired audio file.
485 * \param row Result pointer.
486 *
487 * \return Standard.
488 */
489 static int aft_get_row_of_hash(unsigned char *hash, struct osl_row **row)
490 {
491 const struct osl_object obj = {.data = hash, .size = HASH_SIZE};
492 return osl(osl_get_row(audio_file_table, AFTCOL_HASH, &obj, row));
493 }
494
495 /**
496 * Get the osl object holding the audio file selector info of a row.
497 *
498 * \param row Pointer to a row in the audio file table.
499 * \param obj Result pointer.
500 *
501 * \return Standard.
502 */
503 int get_afsi_object_of_row(const struct osl_row *row, struct osl_object *obj)
504 {
505 return osl(osl_get_object(audio_file_table, row, AFTCOL_AFSI, obj));
506 }
507
508 /**
509 * Get the osl object holding the audio file selector info, given a path.
510 *
511 *
512 * \param path The full path of the audio file.
513 * \param obj Result pointer.
514 *
515 * \return Positive on success, negative on errors.
516 */
517 static int get_afsi_object_of_path(const char *path, struct osl_object *obj)
518 {
519 struct osl_row *row;
520 int ret = aft_get_row_of_path(path, &row);
521 if (ret < 0)
522 return ret;
523 return get_afsi_object_of_row(row, obj);
524 }
525
526 /**
527 * Get the audio file selector info, given a row of the audio file table.
528 *
529 * \param row Pointer to a row in the audio file table.
530 * \param afsi Result pointer.
531 *
532 * \return Positive on success, negative on errors.
533 */
534 int get_afsi_of_row(const struct osl_row *row, struct afs_info *afsi)
535 {
536 struct osl_object obj;
537 int ret = get_afsi_object_of_row(row, &obj);
538 if (ret < 0)
539 return ret;
540 return load_afsi(afsi, &obj);
541 }
542
543 /**
544 * Get the audio file selector info, given the path of an audio table.
545 *
546 * \param path The full path of the audio file.
547 * \param afsi Result pointer.
548 *
549 * \return Positive on success, negative on errors.
550 */
551 int get_afsi_of_path(const char *path, struct afs_info *afsi)
552 {
553 struct osl_object obj;
554 int ret = get_afsi_object_of_path(path, &obj);
555 if (ret < 0)
556 return ret;
557 return load_afsi(afsi, &obj);
558 }
559
560 /**
561 * Get the path of an audio file, given a row of the audio file table.
562 *
563 * \param row Pointer to a row in the audio file table.
564 * \param path Result pointer.
565 *
566 * The result is a pointer to mmapped data. The caller must not attempt
567 * to free it.
568 *
569 * \return Standard.
570 */
571 int get_audio_file_path_of_row(const struct osl_row *row, char **path)
572 {
573 struct osl_object path_obj;
574 int ret = osl(osl_get_object(audio_file_table, row, AFTCOL_PATH,
575 &path_obj));
576 if (ret < 0)
577 return ret;
578 *path = path_obj.data;
579 return 1;
580 }
581
582 /**
583 * Get the object containing the hash value of an audio file, given a row.
584 *
585 * \param row Pointer to a row of the audio file table.
586 * \param obj Result pointer.
587 *
588 * \return The return value of the underlying call to osl_get_object().
589 *
590 * \sa get_hash_of_row().
591 */
592 static int get_hash_object_of_aft_row(const struct osl_row *row,
593 struct osl_object *obj)
594 {
595 return osl(osl_get_object(audio_file_table, row, AFTCOL_HASH, obj));
596 }
597
598 /**
599 * Get the hash value of an audio file, given a row of the audio file table.
600 *
601 * \param row Pointer to a row of the audio file table.
602 * \param hash Result pointer.
603 *
604 * \a hash points to mapped data and must not be freed by the caller.
605 *
606 * \return The return value of the underlying call to
607 * get_hash_object_of_aft_row().
608 */
609 static int get_hash_of_row(const struct osl_row *row, unsigned char **hash)
610 {
611 struct osl_object obj;
612 int ret = get_hash_object_of_aft_row(row, &obj);
613
614 if (ret < 0)
615 return ret;
616 *hash = obj.data;
617 return 1;
618 }
619
620 /**
621 * Get the audio format handler info, given a row of the audio file table.
622 *
623 * \param row Pointer to a row of the audio file table.
624 * \param afhi Result pointer.
625 *
626 * \return The return value of the underlying call to osl_get_object().
627 *
628 * \sa get_chunk_table_of_row().
629 */
630 int get_afhi_of_row(const struct osl_row *row, struct afh_info *afhi)
631 {
632 struct osl_object obj;
633 int ret = osl(osl_get_object(audio_file_table, row, AFTCOL_AFHI,
634 &obj));
635 if (ret < 0)
636 return ret;
637 load_afhi(obj.data, afhi);
638 return 1;
639 }
640
641 /* returns shmid on success */
642 static int save_afd(struct audio_file_data *afd)
643 {
644 size_t size = sizeof(*afd) + sizeof_chunk_table(&afd->afhi);
645 int shmid, ret = shm_new(size);
646 void *shm_afd;
647 char *buf;
648
649 if (ret < 0)
650 return ret;
651 shmid = ret;
652 ret = shm_attach(shmid, ATTACH_RW, &shm_afd);
653 if (ret < 0)
654 goto err;
655 buf = shm_afd;
656 buf += sizeof(*afd);
657 afd->max_chunk_size = save_chunk_table(&afd->afhi, buf);
658 *(struct audio_file_data *)shm_afd = *afd;
659 shm_detach(shm_afd);
660 return shmid;
661 err:
662 shm_destroy(shmid);
663 return ret;
664 }
665
666 /**
667 * Extract a afd stored in a shared memory area.
668 *
669 * Attach the shared memory area given by \a shmid, load the audio file data
670 * stored therein and detach the area afterwards. Called by vss, after
671 * receiving a positive response to the request for the next audio file.
672 +
673 * \param shmid The identifier of the shared memory area containing the afd.
674 * \param afd Result pointer.
675 *
676 * \return Standard.
677 */
678 int load_afd(int shmid, struct audio_file_data *afd)
679 {
680 void *shm_afd;
681 char *buf;
682 int ret;
683
684 ret = shm_attach(shmid, ATTACH_RO, &shm_afd);
685 if (ret < 0)
686 return ret;
687 *afd = *(struct audio_file_data *)shm_afd;
688 buf = shm_afd;
689 buf += sizeof(*afd);
690 load_chunk_table(&afd->afhi, buf);
691 shm_detach(shm_afd);
692 return 1;
693 }
694
695 static int get_local_time(uint64_t *seconds, char *buf, size_t size,
696 time_t current_time, enum ls_listing_mode lm)
697 {
698 struct tm t;
699
700 if (!localtime_r((time_t *)seconds, &t))
701 return -E_LOCALTIME;
702 if (lm == LS_MODE_MBOX) {
703 if (!strftime(buf, size, "%c", &t))
704 return -E_STRFTIME;
705 return 1;
706 }
707 if (*seconds + 6 * 30 * 24 * 3600 > current_time) {
708 if (!strftime(buf, size, "%b %e %k:%M", &t))
709 return -E_STRFTIME;
710 return 1;
711 }
712 if (!strftime(buf, size, "%b %e %Y", &t))
713 return -E_STRFTIME;
714 return 1;
715 }
716
717 /** Compute the number of (decimal) digits of a number. */
718 #define GET_NUM_DIGITS(x, num) { \
719 typeof((x)) _tmp = PARA_ABS(x); \
720 *num = 1; \
721 if ((_tmp)) \
722 while ((_tmp) > 9) { \
723 (_tmp) /= 10; \
724 (*num)++; \
725 } \
726 }
727
728 __a_const static short unsigned get_duration_width(int seconds)
729 {
730 short unsigned width;
731 unsigned hours = seconds / 3600, mins = (seconds % 3600) / 60;
732
733 if (!hours) /* less than one hour => m:ss or mm:ss => 4 or 5 digits */
734 return 4 + (mins > 9);
735 /* more than one hour => h:mm:ss, hh:mm:ss, hhh:mm:ss, ... */
736 GET_NUM_DIGITS(hours, &width);
737 return width + 6;
738 }
739
740 static void get_duration_buf(int seconds, char *buf, struct ls_options *opts)
741 {
742 unsigned hours = seconds / 3600, mins = (seconds % 3600) / 60;
743 short unsigned max_width;
744
745 if (!hours) { /* m:ss or mm:ss */
746 max_width = opts->mode == LS_MODE_LONG?
747 opts->widths.duration_width : 4;
748 sprintf(buf, "%*u:%02u", max_width - 3, mins, seconds % 60);
749 } else { /* more than one hour => h:mm:ss, hh:mm:ss, hhh:mm:ss, ... */
750 max_width = opts->mode == LS_MODE_LONG?
751 opts->widths.duration_width : 7;
752 sprintf(buf, "%*u:%02u:%02u", max_width - 6, hours, mins,
753 seconds % 60);
754 }
755 }
756
757
758 static int write_attribute_items(struct para_buffer *b,
759 const char *att_bitmap, struct afs_info *afsi)
760 {
761 char *att_text;
762 int ret;
763
764 ret = WRITE_STATUS_ITEM(b, SI_ATTRIBUTES_BITMAP, "%s\n", att_bitmap);
765 if (ret < 0)
766 return ret;
767 ret = get_attribute_text(&afsi->attributes, " ", &att_text);
768 if (ret < 0)
769 return ret;
770 ret = WRITE_STATUS_ITEM(b, SI_ATTRIBUTES_TXT, "%s\n", att_text);
771 free(att_text);
772 return ret;
773 }
774
775 static int write_lyrics_items(struct para_buffer *b, struct afs_info *afsi)
776 {
777 char *lyrics_name;
778 int ret;
779
780 ret = WRITE_STATUS_ITEM(b, SI_LYRICS_ID, "%u\n", afsi->lyrics_id);
781 if (ret < 0)
782 return ret;
783 lyr_get_name_by_id(afsi->lyrics_id, &lyrics_name);
784 return WRITE_STATUS_ITEM(b, SI_LYRICS_NAME, "%s\n", lyrics_name?
785 lyrics_name : "(none)");
786 }
787
788 static int write_image_items(struct para_buffer *b, struct afs_info *afsi)
789 {
790 char *image_name;
791 int ret;
792
793 ret = WRITE_STATUS_ITEM(b, SI_IMAGE_ID, "%u\n", afsi->image_id);
794 if (ret < 0)
795 return ret;
796 img_get_name_by_id(afsi->image_id, &image_name);
797 return WRITE_STATUS_ITEM(b, SI_IMAGE_NAME, "%s\n", image_name?
798 image_name : "(none)");
799 }
800
801 static int write_filename_items(struct para_buffer *b, const char *path,
802 unsigned flags)
803 {
804 char *val;
805 int ret;
806
807 if (!(flags & LS_FLAG_FULL_PATH))
808 return WRITE_STATUS_ITEM(b, SI_BASENAME, "%s\n", path);
809 ret = WRITE_STATUS_ITEM(b, SI_PATH, "%s\n", path);
810 if (ret < 0)
811 return ret;
812 val = para_basename(path);
813 ret = WRITE_STATUS_ITEM(b, SI_BASENAME, "%s\n", val? val : "");
814 if (ret < 0)
815 return ret;
816 val = para_dirname(path);
817 ret = WRITE_STATUS_ITEM(b, SI_DIRECTORY, "%s\n", val? val : "");
818 free(val);
819 return ret;
820 }
821
822 static int print_chunk_table(struct ls_data *d, struct para_buffer *b)
823 {
824 struct osl_object chunk_table_obj;
825 struct osl_row *aft_row;
826 int ret, i;
827 char *buf;
828
829 ret = aft_get_row_of_hash(d->hash, &aft_row);
830 if (ret < 0)
831 return ret;
832 ret = osl_open_disk_object(audio_file_table, aft_row,
833 AFTCOL_CHUNKS, &chunk_table_obj);
834 if (ret < 0)
835 return ret;
836 ret = para_printf(b, "%s\n"
837 "chunk_time: %lu:%lu\nchunk_offsets: ",
838 d->path,
839 (long unsigned) d->afhi.chunk_tv.tv_sec,
840 (long unsigned) d->afhi.chunk_tv.tv_usec
841 );
842 if (ret < 0)
843 goto out;
844 buf = chunk_table_obj.data;
845 for (i = 0; i <= d->afhi.chunks_total; i++) {
846 ret = para_printf(b, "%u ", (unsigned) read_u32(buf + 4 * i));
847 if (ret < 0)
848 goto out;
849 }
850 ret = para_printf(b, "\n");
851 out:
852 osl_close_disk_object(&chunk_table_obj);
853 return ret;
854 }
855
856 static int write_score(struct para_buffer *b, struct ls_data *d,
857 struct ls_options *opts)
858 {
859 if (!(opts->flags & LS_FLAG_ADMISSIBLE_ONLY)) /* no score*/
860 return 0;
861 return WRITE_STATUS_ITEM(b, SI_SCORE, "%li\n", d->score);
862 }
863
864 static int print_list_item(struct ls_data *d, struct ls_options *opts,
865 struct para_buffer *b, time_t current_time)
866 {
867 int ret;
868 char att_buf[65];
869 char last_played_time[30];
870 char duration_buf[30]; /* nobody has an audio file long enough to overflow this */
871 struct afs_info *afsi = &d->afsi;
872 struct afh_info *afhi = &d->afhi;
873 char asc_hash[2 * HASH_SIZE + 1];
874
875 if (opts->mode == LS_MODE_SHORT) {
876 ret = para_printf(b, "%s\n", d->path);
877 goto out;
878 }
879 if (opts->mode == LS_MODE_CHUNKS) {
880 ret = print_chunk_table(d, b);
881 goto out;
882 }
883 get_attribute_bitmap(&afsi->attributes, att_buf);
884 if (opts->flags & LS_FLAG_UNIXDATE)
885 sprintf(last_played_time, "%llu",
886 (long long unsigned)afsi->last_played);
887 else {
888 ret = get_local_time(&afsi->last_played, last_played_time,
889 sizeof(last_played_time), current_time, opts->mode);
890 if (ret < 0)
891 goto out;
892 }
893 get_duration_buf(afhi->seconds_total, duration_buf, opts);
894 if (opts->mode == LS_MODE_LONG) {
895 struct ls_widths *w = &opts->widths;
896 if (opts->flags & LS_FLAG_ADMISSIBLE_ONLY) {
897 ret = para_printf(b, "%*li ",
898 opts->widths.score_width, d->score);
899 if (ret < 0)
900 goto out;
901 }
902 ret = para_printf(b,
903 "%s " /* attributes */
904 "%*u " /* amp */
905 "%*d " /* image_id */
906 "%*d " /* lyrics_id */
907 "%*d " /* bitrate */
908 "%*s " /* audio format */
909 "%*d " /* frequency */
910 "%d " /* channels */
911 "%s " /* duration */
912 "%*d " /* num_played */
913 "%s " /* last_played */
914 "%s\n", /* path */
915 att_buf,
916 w->amp_width, afsi->amp,
917 w->image_id_width, afsi->image_id,
918 w->lyrics_id_width, afsi->lyrics_id,
919 w->bitrate_width, afhi->bitrate,
920 w->audio_format_width,
921 audio_format_name(afsi->audio_format_id),
922 w->frequency_width, afhi->frequency,
923 afhi->channels,
924 duration_buf,
925 w->num_played_width, afsi->num_played,
926 last_played_time,
927 d->path
928 );
929 goto out;
930 }
931 if (opts->mode == LS_MODE_MBOX) {
932 const char *bn = para_basename(d->path);
933 ret = para_printf(b,
934 "From foo@localhost %s\n"
935 "Received: from\nTo: bar\nFrom: a\n"
936 "Subject: %s\n\n",
937 last_played_time,
938 bn? bn : "?");
939 if (ret < 0)
940 goto out;
941 }
942 ret = write_filename_items(b, d->path, opts->flags);
943 if (ret < 0)
944 goto out;
945 ret = write_score(b, d, opts);
946 if (ret < 0)
947 goto out;
948 ret = write_attribute_items(b, att_buf, afsi);
949 if (ret < 0)
950 goto out;
951 ret = write_image_items(b, afsi);
952 if (ret < 0)
953 goto out;
954 ret = write_lyrics_items(b, afsi);
955 if (ret < 0)
956 goto out;
957 hash_to_asc(d->hash, asc_hash);
958 ret = WRITE_STATUS_ITEM(b, SI_HASH, "%s\n", asc_hash);
959 if (ret < 0)
960 goto out;
961 ret = WRITE_STATUS_ITEM(b, SI_BITRATE, "%dkbit/s\n", afhi->bitrate);
962 if (ret < 0)
963 goto out;
964 ret = WRITE_STATUS_ITEM(b, SI_FORMAT, "%s\n",
965 audio_format_name(afsi->audio_format_id));
966 if (ret < 0)
967 goto out;
968 ret = WRITE_STATUS_ITEM(b, SI_FREQUENCY, "%dHz\n", afhi->frequency);
969 if (ret < 0)
970 goto out;
971 ret = WRITE_STATUS_ITEM(b, SI_CHANNELS, "%d\n", afhi->channels);
972 if (ret < 0)
973 goto out;
974 ret = WRITE_STATUS_ITEM(b, SI_DURATION, "%s\n", duration_buf);
975 if (ret < 0)
976 goto out;
977 ret = WRITE_STATUS_ITEM(b, SI_SECONDS_TOTAL, "%lu\n",
978 afhi->seconds_total);
979 if (ret < 0)
980 goto out;
981 ret = WRITE_STATUS_ITEM(b, SI_LAST_PLAYED, "%s\n", last_played_time);
982 if (ret < 0)
983 goto out;
984 ret = WRITE_STATUS_ITEM(b, SI_NUM_PLAYED, "%d\n", afsi->num_played);
985 if (ret < 0)
986 goto out;
987 ret = WRITE_STATUS_ITEM(b, SI_AMPLIFICATION, "%u\n", afsi->amp);
988 if (ret < 0)
989 goto out;
990 ret = WRITE_STATUS_ITEM(b, SI_CHUNK_TIME, "%lu\n",
991 tv2ms(&afhi->chunk_tv));
992 if (ret < 0)
993 goto out;
994 ret = WRITE_STATUS_ITEM(b, SI_NUM_CHUNKS, "%lu\n",
995 afhi->chunks_total);
996 if (ret < 0)
997 goto out;
998 ret = WRITE_STATUS_ITEM(b, SI_TECHINFO, "%s\n", afhi->techinfo);
999 if (ret < 0)
1000 goto out;
1001 ret = WRITE_STATUS_ITEM(b, SI_ARTIST, "%s\n", afhi->tags.artist);
1002 if (ret < 0)
1003 goto out;
1004 ret = WRITE_STATUS_ITEM(b, SI_TITLE, "%s\n", afhi->tags.title);
1005 if (ret < 0)
1006 goto out;
1007 ret = WRITE_STATUS_ITEM(b, SI_YEAR, "%s\n", afhi->tags.year);
1008 if (ret < 0)
1009 goto out;
1010 ret = WRITE_STATUS_ITEM(b, SI_ALBUM, "%s\n", afhi->tags.album);
1011 if (ret < 0)
1012 goto out;
1013 ret = WRITE_STATUS_ITEM(b, SI_COMMENT, "%s\n", afhi->tags.comment);
1014 if (ret < 0)
1015 goto out;
1016 if (opts->mode == LS_MODE_MBOX) {
1017 struct osl_object lyrics_def;
1018 lyr_get_def_by_id(afsi->lyrics_id, &lyrics_def);
1019 if (lyrics_def.data) {
1020 ret = para_printf(b, "Lyrics:\n~~~~~~~\n%s",
1021 (char *)lyrics_def.data);
1022 osl_close_disk_object(&lyrics_def);
1023 }
1024 }
1025 out:
1026 return ret;
1027 }
1028
1029 static int make_status_items(struct audio_file_data *afd,
1030 struct afs_info *afsi, char *path, long score,
1031 unsigned char *hash)
1032 {
1033 struct ls_data d = {
1034 .afhi = afd->afhi,
1035 .afsi = *afsi,
1036 .path = path,
1037 .score = score,
1038 .hash = hash
1039 };
1040 struct ls_options opts = {
1041 .flags = LS_FLAG_FULL_PATH | LS_FLAG_ADMISSIBLE_ONLY,
1042 .mode = LS_MODE_VERBOSE,
1043 };
1044 struct para_buffer pb = {.max_size = shm_get_shmmax() - 1};
1045 time_t current_time;
1046 int ret;
1047
1048 time(&current_time);
1049 ret = print_list_item(&d, &opts, &pb, current_time);
1050 if (ret < 0)
1051 return ret;
1052 free(status_items);
1053 status_items = pb.buf;
1054 memset(&pb, 0, sizeof(pb));
1055 pb.max_size = shm_get_shmmax() - 1;
1056 pb.flags = PBF_SIZE_PREFIX;
1057 ret = print_list_item(&d, &opts, &pb, current_time);
1058 if (ret < 0) {
1059 free(status_items);
1060 status_items = NULL;
1061 return ret;
1062 }
1063 free(parser_friendly_status_items);
1064 parser_friendly_status_items = pb.buf;
1065 return 1;
1066 }
1067
1068 /**
1069 * Mmap the given audio file and update statistics.
1070 *
1071 * \param aft_row Determines the audio file to be opened and updated.
1072 * \param score The score of the audio file.
1073 * \param afd Result pointer.
1074 *
1075 * On success, the numplayed field of the audio file selector info is increased
1076 * and the lastplayed time is set to the current time. Finally, the score of
1077 * the audio file is updated.
1078 *
1079 * \return Positive shmid on success, negative on errors.
1080 */
1081 int open_and_update_audio_file(struct osl_row *aft_row, long score,
1082 struct audio_file_data *afd)
1083 {
1084 unsigned char *aft_hash, file_hash[HASH_SIZE];
1085 struct osl_object afsi_obj;
1086 struct afs_info old_afsi, new_afsi;
1087 int ret = get_hash_of_row(aft_row, &aft_hash);
1088 struct afsi_change_event_data aced;
1089 struct osl_object map, chunk_table_obj;
1090 char *path;
1091
1092 if (ret < 0)
1093 return ret;
1094 ret = get_audio_file_path_of_row(aft_row, &path);
1095 if (ret < 0)
1096 return ret;
1097 PARA_NOTICE_LOG("%s\n", path);
1098 ret = get_afsi_object_of_row(aft_row, &afsi_obj);
1099 if (ret < 0)
1100 return ret;
1101 ret = load_afsi(&old_afsi, &afsi_obj);
1102 if (ret < 0)
1103 return ret;
1104 ret = get_afhi_of_row(aft_row, &afd->afhi);
1105 if (ret < 0)
1106 return ret;
1107 afd->afhi.chunk_table = NULL;
1108 ret = osl_open_disk_object(audio_file_table, aft_row,
1109 AFTCOL_CHUNKS, &chunk_table_obj);
1110 if (ret < 0)
1111 goto err;
1112 ret = mmap_full_file(path, O_RDONLY, &map.data,
1113 &map.size, &afd->fd);
1114 if (ret < 0)
1115 goto err;
1116 hash_function(map.data, map.size, file_hash);
1117 ret = hash_compare(file_hash, aft_hash);
1118 para_munmap(map.data, map.size);
1119 if (ret) {
1120 ret = -E_HASH_MISMATCH;
1121 goto err;
1122 }
1123 new_afsi = old_afsi;
1124 new_afsi.num_played++;
1125 new_afsi.last_played = time(NULL);
1126 save_afsi(&new_afsi, &afsi_obj); /* in-place update */
1127
1128 afd->audio_format_id = old_afsi.audio_format_id;
1129 load_chunk_table(&afd->afhi, chunk_table_obj.data);
1130 ret = make_status_items(afd, &old_afsi, path, score, file_hash);
1131 if (ret < 0)
1132 goto err;
1133 aced.aft_row = aft_row;
1134 aced.old_afsi = &old_afsi;
1135 afs_event(AFSI_CHANGE, NULL, &aced);
1136 ret = save_afd(afd);
1137 err:
1138 free(afd->afhi.chunk_table);
1139 osl_close_disk_object(&chunk_table_obj);
1140 if (ret < 0)
1141 PARA_ERROR_LOG("%s: %s\n", path, para_strerror(-ret));
1142 return ret;
1143 }
1144
1145 static int ls_audio_format_compare(const void *a, const void *b)
1146 {
1147 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1148 return NUM_COMPARE(d1->afsi.audio_format_id, d2->afsi.audio_format_id);
1149 }
1150
1151 static int ls_duration_compare(const void *a, const void *b)
1152 {
1153 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1154 return NUM_COMPARE(d1->afhi.seconds_total, d2->afhi.seconds_total);
1155 }
1156
1157 static int ls_bitrate_compare(const void *a, const void *b)
1158 {
1159 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1160 return NUM_COMPARE(d1->afhi.bitrate, d2->afhi.bitrate);
1161 }
1162
1163 static int ls_lyrics_id_compare(const void *a, const void *b)
1164 {
1165 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1166 return NUM_COMPARE(d1->afsi.lyrics_id, d2->afsi.lyrics_id);
1167 }
1168
1169 static int ls_image_id_compare(const void *a, const void *b)
1170 {
1171 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1172 return NUM_COMPARE(d1->afsi.image_id, d2->afsi.image_id);
1173 }
1174
1175 static int ls_channels_compare(const void *a, const void *b)
1176 {
1177 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1178 return NUM_COMPARE(d1->afhi.channels, d2->afhi.channels);
1179 }
1180
1181 static int ls_frequency_compare(const void *a, const void *b)
1182 {
1183 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1184 return NUM_COMPARE(d1->afhi.frequency, d2->afhi.frequency);
1185 }
1186
1187 static int ls_num_played_compare(const void *a, const void *b)
1188 {
1189 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1190 return NUM_COMPARE(d1->afsi.num_played, d2->afsi.num_played);
1191 }
1192
1193 static int ls_last_played_compare(const void *a, const void *b)
1194 {
1195 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1196 return NUM_COMPARE(d1->afsi.last_played, d2->afsi.last_played);
1197 }
1198
1199 static int ls_score_compare(const void *a, const void *b)
1200 {
1201 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1202 return NUM_COMPARE(d1->score, d2->score);
1203 }
1204
1205 static int ls_path_compare(const void *a, const void *b)
1206 {
1207 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1208 return strcmp(d1->path, d2->path);
1209 }
1210
1211 static int sort_matching_paths(struct ls_options *options)
1212 {
1213 size_t nmemb = options->num_matching_paths;
1214 size_t size = sizeof(*options->data_ptr);
1215 int (*compar)(const void *, const void *);
1216 int i;
1217
1218 options->data_ptr = para_malloc(nmemb * sizeof(*options->data_ptr));
1219 for (i = 0; i < nmemb; i++)
1220 options->data_ptr[i] = options->data + i;
1221
1222 /* In these cases the array is already sorted */
1223 if (options->sorting == LS_SORT_BY_PATH
1224 && !(options->flags & LS_FLAG_ADMISSIBLE_ONLY)
1225 && (options->flags & LS_FLAG_FULL_PATH))
1226 return 1;
1227 if (options->sorting == LS_SORT_BY_SCORE &&
1228 options->flags & LS_FLAG_ADMISSIBLE_ONLY)
1229 return 1;
1230
1231 switch (options->sorting) {
1232 case LS_SORT_BY_PATH:
1233 compar = ls_path_compare; break;
1234 case LS_SORT_BY_SCORE:
1235 compar = ls_score_compare; break;
1236 case LS_SORT_BY_LAST_PLAYED:
1237 compar = ls_last_played_compare; break;
1238 case LS_SORT_BY_NUM_PLAYED:
1239 compar = ls_num_played_compare; break;
1240 case LS_SORT_BY_FREQUENCY:
1241 compar = ls_frequency_compare; break;
1242 case LS_SORT_BY_CHANNELS:
1243 compar = ls_channels_compare; break;
1244 case LS_SORT_BY_IMAGE_ID:
1245 compar = ls_image_id_compare; break;
1246 case LS_SORT_BY_LYRICS_ID:
1247 compar = ls_lyrics_id_compare; break;
1248 case LS_SORT_BY_BITRATE:
1249 compar = ls_bitrate_compare; break;
1250 case LS_SORT_BY_DURATION:
1251 compar = ls_duration_compare; break;
1252 case LS_SORT_BY_AUDIO_FORMAT:
1253 compar = ls_audio_format_compare; break;
1254 default:
1255 return -E_BAD_SORT;
1256 }
1257 qsort(options->data_ptr, nmemb, size, compar);
1258 return 1;
1259 }
1260
1261 /* row is either an aft_row or a row of the score table */
1262 /* TODO: Only compute widths if we need them */
1263 static int prepare_ls_row(struct osl_row *row, void *ls_opts)
1264 {
1265 int ret, i;
1266 struct ls_options *options = ls_opts;
1267 struct ls_data *d;
1268 struct ls_widths *w;
1269 unsigned short num_digits;
1270 unsigned tmp;
1271 struct osl_row *aft_row;
1272 long score;
1273 char *path;
1274
1275 if (options->flags & LS_FLAG_ADMISSIBLE_ONLY) {
1276 ret = get_score_and_aft_row(row, &score, &aft_row);
1277 if (ret < 0)
1278 return ret;
1279 } else
1280 aft_row = row;
1281 ret = get_audio_file_path_of_row(aft_row, &path);
1282 if (ret < 0)
1283 return ret;
1284 if (!(options->flags & LS_FLAG_FULL_PATH)) {
1285 char *p = strrchr(path, '/');
1286 if (p)
1287 path = p + 1;
1288 }
1289 if (options->num_patterns) {
1290 for (i = 0; i < options->num_patterns; i++) {
1291 ret = fnmatch(options->patterns[i], path, 0);
1292 if (!ret)
1293 break;
1294 if (ret == FNM_NOMATCH)
1295 continue;
1296 return -E_FNMATCH;
1297 }
1298 if (i >= options->num_patterns) /* no match */
1299 return 1;
1300 }
1301 tmp = options->num_matching_paths++;
1302 if (options->num_matching_paths > options->array_size) {
1303 options->array_size++;
1304 options->array_size *= 2;
1305 options->data = para_realloc(options->data, options->array_size
1306 * sizeof(*options->data));
1307 }
1308 d = options->data + tmp;
1309 ret = get_afsi_of_row(aft_row, &d->afsi);
1310 if (ret < 0)
1311 return ret;
1312 ret = get_afhi_of_row(aft_row, &d->afhi);
1313 if (ret < 0)
1314 return ret;
1315 d->path = path;
1316 ret = get_hash_of_row(aft_row, &d->hash);
1317 if (ret < 0)
1318 goto err;
1319 w = &options->widths;
1320 GET_NUM_DIGITS(d->afsi.image_id, &num_digits);
1321 w->image_id_width = PARA_MAX(w->image_id_width, num_digits);
1322 GET_NUM_DIGITS(d->afsi.lyrics_id, &num_digits);
1323 w->lyrics_id_width = PARA_MAX(w->lyrics_id_width, num_digits);
1324 GET_NUM_DIGITS(d->afhi.bitrate, &num_digits);
1325 w->bitrate_width = PARA_MAX(w->bitrate_width, num_digits);
1326 GET_NUM_DIGITS(d->afhi.frequency, &num_digits);
1327 w->frequency_width = PARA_MAX(w->frequency_width, num_digits);
1328 GET_NUM_DIGITS(d->afsi.num_played, &num_digits);
1329 w->num_played_width = PARA_MAX(w->num_played_width, num_digits);
1330 /* get the number of chars to print this amount of time */
1331 num_digits = get_duration_width(d->afhi.seconds_total);
1332 w->duration_width = PARA_MAX(w->duration_width, num_digits);
1333 GET_NUM_DIGITS(d->afsi.amp, &num_digits);
1334 w->amp_width = PARA_MAX(w->amp_width, num_digits);
1335 num_digits = strlen(audio_format_name(d->afsi.audio_format_id));
1336 w->audio_format_width = PARA_MAX(w->audio_format_width, num_digits);
1337 if (options->flags & LS_FLAG_ADMISSIBLE_ONLY) {
1338 GET_NUM_DIGITS(score, &num_digits);
1339 num_digits++; /* add one for the sign (space or "-") */
1340 w->score_width = PARA_MAX(w->score_width, num_digits);
1341 d->score = score;
1342 }
1343 return 1;
1344 err:
1345 return ret;
1346 }
1347
1348 static void com_ls_callback(int fd, const struct osl_object *query)
1349 {
1350 struct ls_options *opts = query->data;
1351 char *p, *pattern_start = (char *)query->data + sizeof(*opts);
1352 struct para_buffer b = {
1353 .max_size = shm_get_shmmax(),
1354 .flags = (opts->mode == LS_MODE_PARSER)? PBF_SIZE_PREFIX : 0,
1355 .max_size_handler = afs_max_size_handler,
1356 .private_data = &(struct afs_max_size_handler_data) {
1357 .fd = fd,
1358 }
1359 };
1360 int i = 0, ret;
1361 time_t current_time;
1362
1363 if (opts->num_patterns) {
1364 opts->patterns = para_malloc(opts->num_patterns * sizeof(char *));
1365 for (i = 0, p = pattern_start; i < opts->num_patterns; i++) {
1366 opts->patterns[i] = p;
1367 p += strlen(p) + 1;
1368 }
1369 } else
1370 opts->patterns = NULL;
1371 if (opts->flags & LS_FLAG_ADMISSIBLE_ONLY)
1372 ret = admissible_file_loop(opts, prepare_ls_row);
1373 else
1374 ret = osl(osl_rbtree_loop(audio_file_table, AFTCOL_PATH, opts,
1375 prepare_ls_row));
1376 if (ret < 0)
1377 goto out;
1378 if (opts->num_matching_paths == 0) {
1379 if (opts->num_patterns > 0)
1380 para_printf(&b, "no matches\n");
1381 goto out;
1382 }
1383 ret = sort_matching_paths(opts);
1384 if (ret < 0)
1385 goto out;
1386 time(&current_time);
1387 if (opts->flags & LS_FLAG_REVERSE)
1388 for (i = opts->num_matching_paths - 1; i >= 0; i--) {
1389 ret = print_list_item(opts->data_ptr[i], opts, &b, current_time);
1390 if (ret < 0)
1391 goto out;
1392 }
1393 else
1394 for (i = 0; i < opts->num_matching_paths; i++) {
1395 ret = print_list_item(opts->data_ptr[i], opts, &b, current_time);
1396 if (ret < 0)
1397 goto out;
1398 }
1399 out:
1400 if (b.offset)
1401 pass_buffer_as_shm(b.buf, b.offset, &fd);
1402 free(b.buf);
1403 free(opts->data);
1404 free(opts->data_ptr);
1405 free(opts->patterns);
1406 }
1407
1408 /*
1409 * TODO: flags -h (sort by hash)
1410 */
1411 int com_ls(struct command_context *cc)
1412 {
1413 int i, ret;
1414 unsigned flags = 0;
1415 enum ls_sorting_method sort = LS_SORT_BY_PATH;
1416 enum ls_listing_mode mode = LS_MODE_SHORT;
1417 struct ls_options opts = {.patterns = NULL};
1418 struct osl_object query = {.data = &opts, .size = sizeof(opts)};
1419
1420 for (i = 1; i < cc->argc; i++) {
1421 const char *arg = cc->argv[i];
1422 if (arg[0] != '-')
1423 break;
1424 if (!strcmp(arg, "--")) {
1425 i++;
1426 break;
1427 }
1428 if (!strncmp(arg, "-l", 2)) {
1429 if (!*(arg + 2)) {
1430 mode = LS_MODE_LONG;
1431 continue;
1432 }
1433 if (*(arg + 3))
1434 return -E_AFT_SYNTAX;
1435 switch(*(arg + 2)) {
1436 case 's':
1437 mode = LS_MODE_SHORT;
1438 continue;
1439 case 'l':
1440 mode = LS_MODE_LONG;
1441 continue;
1442 case 'v':
1443 mode = LS_MODE_VERBOSE;
1444 continue;
1445 case 'm':
1446 mode = LS_MODE_MBOX;
1447 continue;
1448 case 'c':
1449 mode = LS_MODE_CHUNKS;
1450 continue;
1451 case 'p':
1452 mode = LS_MODE_PARSER;
1453 continue;
1454 default:
1455 return -E_AFT_SYNTAX;
1456 }
1457 }
1458 if (!strcmp(arg, "-p")) {
1459 flags |= LS_FLAG_FULL_PATH;
1460 continue;
1461 }
1462 if (!strcmp(arg, "-a")) {
1463 flags |= LS_FLAG_ADMISSIBLE_ONLY;
1464 continue;
1465 }
1466 if (!strcmp(arg, "-r")) {
1467 flags |= LS_FLAG_REVERSE;
1468 continue;
1469 }
1470 if (!strcmp(arg, "-d")) {
1471 flags |= LS_FLAG_UNIXDATE;
1472 continue;
1473 }
1474 if (!strncmp(arg, "-s", 2)) {
1475 if (!*(arg + 2) || *(arg + 3))
1476 return -E_AFT_SYNTAX;
1477 switch(*(arg + 2)) {
1478 case 'p':
1479 sort = LS_SORT_BY_PATH;
1480 continue;
1481 case 's': /* -ss implies -a */
1482 sort = LS_SORT_BY_SCORE;
1483 flags |= LS_FLAG_ADMISSIBLE_ONLY;
1484 continue;
1485 case 'l':
1486 sort = LS_SORT_BY_LAST_PLAYED;
1487 continue;
1488 case 'n':
1489 sort = LS_SORT_BY_NUM_PLAYED;
1490 continue;
1491 case 'f':
1492 sort = LS_SORT_BY_FREQUENCY;
1493 continue;
1494 case 'c':
1495 sort = LS_SORT_BY_CHANNELS;
1496 continue;
1497 case 'i':
1498 sort = LS_SORT_BY_IMAGE_ID;
1499 continue;
1500 case 'y':
1501 sort = LS_SORT_BY_LYRICS_ID;
1502 continue;
1503 case 'b':
1504 sort = LS_SORT_BY_BITRATE;
1505 continue;
1506 case 'd':
1507 sort = LS_SORT_BY_DURATION;
1508 continue;
1509 case 'a':
1510 sort = LS_SORT_BY_AUDIO_FORMAT;
1511 continue;
1512 default:
1513 return -E_AFT_SYNTAX;
1514 }
1515 }
1516 return -E_AFT_SYNTAX;
1517 }
1518 opts.flags = flags;
1519 opts.sorting = sort;
1520 opts.mode = mode;
1521 opts.num_patterns = cc->argc - i;
1522 ret = send_option_arg_callback_request(&query, opts.num_patterns,
1523 cc->argv + i, com_ls_callback, sc_send_result, cc);
1524 return ret;
1525 }
1526
1527 /**
1528 * Call the given function for each file in the audio file table.
1529 *
1530 * \param private_data An arbitrary data pointer, passed to \a func.
1531 * \param func The custom function to be called.
1532 *
1533 * \return Standard.
1534 */
1535 int audio_file_loop(void *private_data, osl_rbtree_loop_func *func)
1536 {
1537 return osl(osl_rbtree_loop(audio_file_table, AFTCOL_HASH, private_data,
1538 func));
1539 }
1540
1541 static struct osl_row *find_hash_sister(unsigned char *hash)
1542 {
1543 const struct osl_object obj = {.data = hash, .size = HASH_SIZE};
1544 struct osl_row *row;
1545
1546 osl_get_row(audio_file_table, AFTCOL_HASH, &obj, &row);
1547 return row;
1548 }
1549
1550 /** The format of the data stored by save_audio_file_data(). */
1551 enum com_add_buffer_offsets {
1552 /** afhi (if present) starts here. */
1553 CAB_AFHI_OFFSET_POS = 0,
1554 /** Start of the chunk table (if present). */
1555 CAB_CHUNKS_OFFSET_POS = 2,
1556 /** Audio format id. */
1557 CAB_AUDIO_FORMAT_OFFSET = 4,
1558 /** Flags given to the add command. */
1559 CAB_FLAGS_OFFSET = 5,
1560 /** The hash of the audio file being added. */
1561 CAB_HASH_OFFSET = 9,
1562 /** Start of the path of the audio file. */
1563 CAB_PATH_OFFSET = (CAB_HASH_OFFSET + HASH_SIZE),
1564 };
1565
1566 /*
1567 * Store the given data to a single buffer. Doesn't need the audio file selector
1568 * info struct as the server knows it as well.
1569 *
1570 * It's OK to call this with afhi == NULL. In this case, the audio format
1571 * handler info won't be stored in the buffer.
1572 */
1573 static void save_add_callback_buffer(unsigned char *hash, const char *path,
1574 struct afh_info *afhi, uint32_t flags,
1575 uint8_t audio_format_num, struct osl_object *obj)
1576 {
1577 size_t path_len = strlen(path) + 1;
1578 size_t afhi_size = sizeof_afhi_buf(afhi);
1579 size_t size = CAB_PATH_OFFSET + path_len + afhi_size
1580 + sizeof_chunk_table(afhi);
1581 char *buf = para_malloc(size);
1582 uint16_t pos;
1583
1584 write_u8(buf + CAB_AUDIO_FORMAT_OFFSET, audio_format_num);
1585 write_u32(buf + CAB_FLAGS_OFFSET, flags);
1586
1587 memcpy(buf + CAB_HASH_OFFSET, hash, HASH_SIZE);
1588 strcpy(buf + CAB_PATH_OFFSET, path);
1589
1590 pos = CAB_PATH_OFFSET + path_len;
1591 PARA_DEBUG_LOG("size: %zu, afhi starts at %d\n", size, pos);
1592 PARA_DEBUG_LOG("last afhi byte: %p, pos %zu\n", buf + pos + afhi_size - 1,
1593 pos + afhi_size - 1);
1594 write_u16(buf + CAB_AFHI_OFFSET_POS, pos);
1595 save_afhi(afhi, buf + pos);
1596
1597 pos += afhi_size;
1598 PARA_DEBUG_LOG("size: %zu, chunks start at %d\n", size, pos);
1599 write_u16(buf + CAB_CHUNKS_OFFSET_POS, pos);
1600 if (afhi)
1601 save_chunk_table(afhi, buf + pos);
1602 PARA_DEBUG_LOG("last byte in buf: %p\n", buf + size - 1);
1603 obj->data = buf;
1604 obj->size = size;
1605 }
1606
1607 /*
1608
1609 Overview of the add command.
1610
1611 Input: What was passed to the callback by the command handler.
1612 ~~~~~~
1613 HS: Hash sister. Whether an audio file with identical hash
1614 already exists in the osl database.
1615
1616 PB: Path brother. Whether a file with the given path exists
1617 in the table.
1618
1619 F: Force flag given. Whether add was called with -f.
1620
1621 output: Action performed by the callback.
1622 ~~~~~~~
1623 AFHI: Whether afhi and chunk table are computed and sent.
1624 ACTION: Table modifications to be done by the callback.
1625
1626 +----+----+---+------+---------------------------------------------------+
1627 | HS | PB | F | AFHI | ACTION
1628 +----+----+---+------+---------------------------------------------------+
1629 | Y | Y | Y | Y | if HS != PB: remove PB. HS: force afhi update,
1630 | | update path, keep afsi
1631 +----+----+---+------+---------------------------------------------------+
1632 | Y | Y | N | N | if HS == PB: do not send callback request at all.
1633 | | otherwise: remove PB, HS: update path, keep afhi,
1634 | | afsi.
1635 +----+----+---+------+---------------------------------------------------+
1636 | Y | N | Y | Y | (rename) force afhi update of HS, update path of
1637 | | HS, keep afsi
1638 +----+----+---+------+---------------------------------------------------+
1639 | Y | N | N | N | (file rename) update path of HS, keep afsi, afhi
1640 +----+----+---+------+---------------------------------------------------+
1641 | N | Y | Y | Y | (file change) update afhi, hash, of PB, keep afsi
1642 | | (force has no effect)
1643 +----+----+---+------+---------------------------------------------------+
1644 | N | Y | N | Y | (file change) update afhi, hash of PB, keep afsi
1645 +----+----+---+------+---------------------------------------------------+
1646 | N | N | Y | Y | (new file) create new entry (force has no effect)
1647 +----+----+---+------+---------------------------------------------------+
1648 | N | N | N | Y | (new file) create new entry
1649 +----+----+---+------+---------------------------------------------------+
1650
1651 Notes:
1652
1653 afhi <=> force or no HS
1654 F => AFHI
1655
1656 */
1657
1658 /** Flags passed to the add command. */
1659 enum com_add_flags {
1660 /** Skip paths that exist already. */
1661 ADD_FLAG_LAZY = 1,
1662 /** Force adding. */
1663 ADD_FLAG_FORCE = 2,
1664 /** Print what is being done. */
1665 ADD_FLAG_VERBOSE = 4,
1666 /** Try to add files with unknown suffixes. */
1667 ADD_FLAG_ALL = 8,
1668 };
1669
1670 static void com_add_callback(int fd, const struct osl_object *query)
1671 {
1672 char *buf = query->data, *path;
1673 struct osl_row *pb, *aft_row;
1674 struct osl_row *hs;
1675 struct osl_object objs[NUM_AFT_COLUMNS];
1676 unsigned char *hash;
1677 char asc[2 * HASH_SIZE + 1];
1678 int ret;
1679 char afsi_buf[AFSI_SIZE];
1680 uint32_t flags = read_u32(buf + CAB_FLAGS_OFFSET);
1681 struct afs_info default_afsi = {.last_played = 0};
1682 struct para_buffer msg = {
1683 .max_size = shm_get_shmmax(),
1684 .max_size_handler = afs_max_size_handler,
1685 .private_data = &(struct afs_max_size_handler_data) {
1686 .fd = fd,
1687 }
1688 };
1689 uint16_t afhi_offset, chunks_offset;
1690
1691 hash = (unsigned char *)buf + CAB_HASH_OFFSET;
1692 hash_to_asc(hash, asc);;
1693 objs[AFTCOL_HASH].data = buf + CAB_HASH_OFFSET;
1694 objs[AFTCOL_HASH].size = HASH_SIZE;
1695
1696 path = buf + CAB_PATH_OFFSET;
1697 objs[AFTCOL_PATH].data = path;
1698 objs[AFTCOL_PATH].size = strlen(path) + 1;
1699
1700 PARA_INFO_LOG("request to add %s\n", path);
1701 hs = find_hash_sister(hash);
1702 ret = aft_get_row_of_path(path, &pb);
1703 if (ret < 0 && ret != -OSL_ERRNO_TO_PARA_ERROR(E_OSL_RB_KEY_NOT_FOUND))
1704 goto out;
1705 if (hs && pb && hs == pb && !(flags & ADD_FLAG_FORCE)) {
1706 if (flags & ADD_FLAG_VERBOSE)
1707 ret = para_printf(&msg, "ignoring duplicate\n");
1708 else
1709 ret = 1;
1710 goto out;
1711 }
1712 if (hs && hs != pb) {
1713 struct osl_object obj;
1714 if (pb) { /* hs trumps pb, remove pb */
1715 if (flags & ADD_FLAG_VERBOSE) {
1716 ret = para_printf(&msg, "removing path brother\n");
1717 if (ret < 0)
1718 goto out;
1719 }
1720 ret = osl(osl_del_row(audio_file_table, pb));
1721 if (ret < 0)
1722 goto out;
1723 pb = NULL;
1724 }
1725 /* file rename, update hs' path */
1726 if (flags & ADD_FLAG_VERBOSE) {
1727 ret = osl(osl_get_object(audio_file_table, hs,
1728 AFTCOL_PATH, &obj));
1729 if (ret < 0)
1730 goto out;
1731 ret = para_printf(&msg, "renamed from %s\n", (char *)obj.data);
1732 if (ret < 0)
1733 goto out;
1734 }
1735 ret = osl(osl_update_object(audio_file_table, hs, AFTCOL_PATH,
1736 &objs[AFTCOL_PATH]));
1737 if (ret < 0)
1738 goto out;
1739 afs_event(AUDIO_FILE_RENAME, &msg, hs);
1740 if (!(flags & ADD_FLAG_FORCE))
1741 goto out;
1742 }
1743 /* no hs or force mode, child must have sent afhi */
1744 afhi_offset = read_u16(buf + CAB_AFHI_OFFSET_POS);
1745 chunks_offset = read_u16(buf + CAB_CHUNKS_OFFSET_POS);
1746
1747 objs[AFTCOL_AFHI].data = buf + afhi_offset;
1748 objs[AFTCOL_AFHI].size = chunks_offset - afhi_offset;
1749 ret = -E_NO_AFHI;
1750 if (!objs[AFTCOL_AFHI].size) /* "impossible" */
1751 goto out;
1752 objs[AFTCOL_CHUNKS].data = buf + chunks_offset;
1753 objs[AFTCOL_CHUNKS].size = query->size - chunks_offset;
1754 if (pb && !hs) { /* update pb's hash */
1755 char old_asc[2 * HASH_SIZE + 1];
1756 unsigned char *old_hash;
1757 ret = get_hash_of_row(pb, &old_hash);
1758 if (ret < 0)
1759 goto out;
1760 hash_to_asc(old_hash, old_asc);
1761 if (flags & ADD_FLAG_VERBOSE) {
1762 ret = para_printf(&msg, "file change: %s -> %s\n",
1763 old_asc, asc);
1764 if (ret < 0)
1765 goto out;
1766 }
1767 ret = osl_update_object(audio_file_table, pb, AFTCOL_HASH,
1768 &objs[AFTCOL_HASH]);
1769 if (ret < 0)
1770 goto out;
1771 }
1772 if (hs || pb) { /* (hs != NULL and pb != NULL) implies hs == pb */
1773 struct osl_row *row = pb? pb : hs;
1774 /* update afhi and chunk_table */
1775 if (flags & ADD_FLAG_VERBOSE) {
1776 ret = para_printf(&msg, "updating afhi and chunk table\n");
1777 if (ret < 0)
1778 goto out;
1779 }
1780 ret = osl(osl_update_object(audio_file_table, row, AFTCOL_AFHI,
1781 &objs[AFTCOL_AFHI]));
1782 if (ret < 0)
1783 goto out;
1784 ret = osl(osl_update_object(audio_file_table, row, AFTCOL_CHUNKS,
1785 &objs[AFTCOL_CHUNKS]));
1786 if (ret < 0)
1787 goto out;
1788 afs_event(AFHI_CHANGE, &msg, row);
1789 goto out;
1790 }
1791 /* new entry, use default afsi */
1792 if (flags & ADD_FLAG_VERBOSE) {
1793 ret = para_printf(&msg, "new file\n");
1794 if (ret < 0)
1795 goto out;
1796 }
1797 default_afsi.last_played = time(NULL) - 365 * 24 * 60 * 60;
1798 default_afsi.audio_format_id = read_u8(buf + CAB_AUDIO_FORMAT_OFFSET);
1799
1800 objs[AFTCOL_AFSI].data = &afsi_buf;
1801 objs[AFTCOL_AFSI].size = AFSI_SIZE;
1802 save_afsi(&default_afsi, &objs[AFTCOL_AFSI]);
1803 ret = osl(osl_add_and_get_row(audio_file_table, objs, &aft_row));
1804 afs_event(AUDIO_FILE_ADD, &msg, aft_row);
1805 out:
1806 if (ret < 0)
1807 para_printf(&msg, "%s\n", para_strerror(-ret));
1808 if (msg.offset)
1809 pass_buffer_as_shm(msg.buf, msg.offset, &fd);
1810 free(msg.buf);
1811 }
1812
1813 /** Used by com_add(). */
1814 struct private_add_data {
1815 /** The pointer passed to the original command handler. */
1816 struct command_context *cc;
1817 /** The given add flags. */
1818 uint32_t flags;
1819 };
1820
1821 static void path_brother_callback(int fd, const struct osl_object *query)
1822 {
1823 char *path = query->data;
1824 struct osl_row *path_brother;
1825 int ret = aft_get_row_of_path(path, &path_brother);
1826 if (ret < 0)
1827 return;
1828 pass_buffer_as_shm((char *)&path_brother, sizeof(path_brother), &fd);
1829 }
1830
1831 static void hash_sister_callback(int fd, const struct osl_object *query)
1832 {
1833 unsigned char *hash = query->data;
1834 struct osl_row *hash_sister;
1835
1836 hash_sister = find_hash_sister(hash);
1837 if (!hash_sister)
1838 return;
1839 pass_buffer_as_shm((char *)&hash_sister, sizeof(hash_sister), &fd);
1840 }
1841
1842 static int get_row_pointer_from_result(struct osl_object *result, void *private)
1843 {
1844 struct osl_row **row = private;
1845 *row = *(struct osl_row **)(result->data);
1846 return 1;
1847 }
1848
1849 static int add_one_audio_file(const char *path, void *private_data)
1850 {
1851 int ret, send_ret = 1, fd;
1852 uint8_t format_num = -1;
1853 struct private_add_data *pad = private_data;
1854 struct afh_info afhi, *afhi_ptr = NULL;
1855 struct osl_row *pb = NULL, *hs = NULL; /* path brother/hash sister */
1856 struct osl_object map, obj = {.data = NULL}, query;
1857 unsigned char hash[HASH_SIZE];
1858
1859 ret = guess_audio_format(path);
1860 if (ret < 0 && !(pad->flags & ADD_FLAG_ALL))
1861 goto out_free;
1862 query.data = (char *)path;
1863 query.size = strlen(path) + 1;
1864 ret = send_callback_request(path_brother_callback, &query,
1865 get_row_pointer_from_result, &pb);
1866 if (ret < 0 && ret != -OSL_ERRNO_TO_PARA_ERROR(E_OSL_RB_KEY_NOT_FOUND))
1867 goto out_free;
1868 ret = 1;
1869 if (pb && (pad->flags & ADD_FLAG_LAZY)) { /* lazy is really cheap */
1870 if (pad->flags & ADD_FLAG_VERBOSE)
1871 send_ret = sc_send_va_buffer(&pad->cc->scc,
1872 "lazy-ignore: %s\n", path);
1873 goto out_free;
1874 }
1875 /* We still want to add this file. Compute its hash. */
1876 ret = mmap_full_file(path, O_RDONLY, &map.data, &map.size, &fd);
1877 if (ret < 0)
1878 goto out_free;
1879 hash_function(map.data, map.size, hash);
1880
1881 /* Check whether the database contains a file with the same hash. */
1882 query.data = hash;
1883 query.size = HASH_SIZE;
1884 ret = send_callback_request(hash_sister_callback, &query,
1885 get_row_pointer_from_result, &hs);
1886 if (ret < 0)
1887 goto out_unmap;
1888 /* Return success if we already know this file. */
1889 ret = 1;
1890 if (pb && hs && hs == pb && !(pad->flags & ADD_FLAG_FORCE)) {
1891 if (pad->flags & ADD_FLAG_VERBOSE)
1892 send_ret = sc_send_va_buffer(&pad->cc->scc,
1893 "%s exists, not forcing update\n", path);
1894 goto out_unmap;
1895 }
1896 /*
1897 * We won't recalculate the audio format info and the chunk table if
1898 * there is a hash sister and FORCE was not given.
1899 */
1900 if (!hs || (pad->flags & ADD_FLAG_FORCE)) {
1901 ret = compute_afhi(path, map.data, map.size, fd, &afhi);
1902 if (ret < 0)
1903 goto out_unmap;
1904 format_num = ret;
1905 afhi_ptr = &afhi;
1906 }
1907 munmap(map.data, map.size);
1908 close(fd);
1909 if (pad->flags & ADD_FLAG_VERBOSE) {
1910 send_ret = sc_send_va_buffer(&pad->cc->scc, "adding %s\n", path);
1911 if (send_ret < 0)
1912 goto out_free;
1913 }
1914 save_add_callback_buffer(hash, path, afhi_ptr, pad->flags, format_num, &obj);
1915 /* Ask afs to consider this entry for adding. */
1916 ret = send_callback_request(com_add_callback, &obj, sc_send_result, pad->cc);
1917 goto out_free;
1918
1919 out_unmap:
1920 close(fd);
1921 munmap(map.data, map.size);
1922 out_free:
1923 if (ret < 0 && send_ret >= 0)
1924 send_ret = sc_send_va_buffer(&pad->cc->scc,
1925 "failed to add %s (%s)\n", path, para_strerror(-ret));
1926 free(obj.data);
1927 clear_afhi(afhi_ptr);
1928 /* Stop adding files only on send errors. */
1929 return send_ret;
1930 }
1931
1932 int com_add(struct command_context *cc)
1933 {
1934 int i, ret;
1935 struct private_add_data pad = {.cc = cc, .flags = 0};
1936 struct stat statbuf;
1937
1938 for (i = 1; i < cc->argc; i++) {
1939 const char *arg = cc->argv[i];
1940 if (arg[0] != '-')
1941 break;
1942 if (!strcmp(arg, "--")) {
1943 i++;
1944 break;
1945 }
1946 if (!strcmp(arg, "-a")) {
1947 pad.flags |= ADD_FLAG_ALL;
1948 continue;
1949 }
1950 if (!strcmp(arg, "-l")) {
1951 pad.flags |= ADD_FLAG_LAZY;
1952 continue;
1953 }
1954 if (!strcmp(arg, "-f")) {
1955 pad.flags |= ADD_FLAG_FORCE;
1956 continue;
1957 }
1958 if (!strcmp(arg, "-v")) {
1959 pad.flags |= ADD_FLAG_VERBOSE;
1960 continue;
1961 }
1962 }
1963 if (cc->argc <= i)
1964 return -E_AFT_SYNTAX;
1965 for (; i < cc->argc; i++) {
1966 char *path;
1967 ret = verify_path(cc->argv[i], &path);
1968 if (ret < 0) {
1969 ret = sc_send_va_buffer(&cc->scc, "%s: %s\n",
1970 cc->argv[i], para_strerror(-ret));
1971 if (ret < 0)
1972 return ret;
1973 continue;
1974 }
1975 ret = stat(path, &statbuf);
1976 if (ret < 0) {
1977 ret = sc_send_va_buffer(&cc->scc,
1978 "failed to stat %s (%s)\n", path,
1979 strerror(errno));
1980 free(path);
1981 if (ret < 0)
1982 return ret;
1983 continue;
1984 }
1985 if (S_ISDIR(statbuf.st_mode))
1986 ret = for_each_file_in_dir(path, add_one_audio_file,
1987 &pad);
1988 else
1989 ret = add_one_audio_file(path, &pad);
1990 if (ret < 0) {
1991 sc_send_va_buffer(&cc->scc, "%s: %s\n", path,
1992 para_strerror(-ret));
1993 free(path);
1994 return ret;
1995 }
1996 free(path);
1997 }
1998 return 1;
1999
2000 }
2001
2002 /**
2003 * Flags used by the touch command.
2004 *
2005 * \sa com_touch().
2006 */
2007 enum touch_flags {
2008 /** Whether the \p FNM_PATHNAME flag should be passed to fnmatch(). */
2009 TOUCH_FLAG_FNM_PATHNAME = 1,
2010 /** Activates verbose mode. */
2011 TOUCH_FLAG_VERBOSE = 2
2012 };
2013
2014 /** Options used by com_touch(). */
2015 struct com_touch_options {
2016 /** New num_played value. */
2017 int32_t num_played;
2018 /** New last played count. */
2019 int64_t last_played;
2020 /** New lyrics id. */
2021 int32_t lyrics_id;
2022 /** New image id. */
2023 int32_t image_id;
2024 /** New amplification value. */
2025 int32_t amp;
2026 /** Command line flags (see \ref touch_flags). */
2027 unsigned flags;
2028 };
2029
2030 /** Data passed to the action handler of com_touch(). */
2031 struct touch_action_data {
2032 /** Command line options (see \ref com_touch_options). */
2033 struct com_touch_options *cto;
2034 /** Message buffer. */
2035 struct para_buffer pb;
2036 };
2037
2038 static int touch_audio_file(__a_unused struct osl_table *table,
2039 struct osl_row *row, const char *name, void *data)
2040 {
2041 struct touch_action_data *tad = data;
2042 struct osl_object obj;
2043 struct afs_info old_afsi, new_afsi;
2044 int ret, no_options = tad->cto->num_played < 0 && tad->cto->last_played < 0 &&
2045 tad->cto->lyrics_id < 0 && tad->cto->image_id < 0 && tad->cto->amp < 0;
2046 struct afsi_change_event_data aced;
2047
2048 ret = get_afsi_object_of_row(row, &obj);
2049 if (ret < 0)
2050 return para_printf(&tad->pb, "%s: %s\n", name, para_strerror(-ret));
2051 ret = load_afsi(&old_afsi, &obj);
2052 if (ret < 0)
2053 return para_printf(&tad->pb, "%s: %s\n", name, para_strerror(-ret));
2054 new_afsi = old_afsi;
2055 if (no_options) {
2056 new_afsi.num_played++;
2057 new_afsi.last_played = time(NULL);
2058 if (tad->cto->flags & TOUCH_FLAG_VERBOSE) {
2059 ret = para_printf(&tad->pb, "%s: num_played = %u, "
2060 "last_played = now()\n", name,
2061 new_afsi.num_played);
2062 if (ret < 0)
2063 return ret;
2064 }
2065 } else {
2066 if (tad->cto->flags & TOUCH_FLAG_VERBOSE) {
2067 ret = para_printf(&tad->pb, "touching %s\n", name);
2068 if (ret < 0)
2069 return ret;
2070 }
2071 if (tad->cto->lyrics_id >= 0)
2072 new_afsi.lyrics_id = tad->cto->lyrics_id;
2073 if (tad->cto->image_id >= 0)
2074 new_afsi.image_id = tad->cto->image_id;
2075 if (tad->cto->num_played >= 0)
2076 new_afsi.num_played = tad->cto->num_played;
2077 if (tad->cto->last_played >= 0)
2078 new_afsi.last_played = tad->cto->last_played;
2079 if (tad->cto->amp >= 0)
2080 new_afsi.amp = tad->cto->amp;
2081 }
2082 save_afsi(&new_afsi, &obj); /* in-place update */
2083 aced.aft_row = row;
2084 aced.old_afsi = &old_afsi;
2085 afs_event(AFSI_CHANGE, &tad->pb, &aced);
2086 return 1;
2087 }
2088
2089 static void com_touch_callback(int fd, const struct osl_object *query)
2090 {
2091 struct touch_action_data tad = {.cto = query->data,
2092 .pb = {
2093 .max_size = shm_get_shmmax(),
2094 .private_data = &fd,
2095 .max_size_handler = afs_max_size_handler
2096 }
2097 };
2098 int ret, ret2 = 0;
2099 struct pattern_match_data pmd = {
2100 .table = audio_file_table,
2101 .loop_col_num = AFTCOL_HASH,
2102 .match_col_num = AFTCOL_PATH,
2103 .patterns = {.data = (char *)query->data + sizeof(*tad.cto),
2104 .size = query->size - sizeof(*tad.cto)},
2105 .data = &tad,
2106 .action = touch_audio_file
2107 };
2108 if (tad.cto->flags & TOUCH_FLAG_FNM_PATHNAME)
2109 pmd.fnmatch_flags |= FNM_PATHNAME;
2110 ret = for_each_matching_row(&pmd);
2111 if (ret < 0)
2112 ret2 = para_printf(&tad.pb, "%s\n", para_strerror(-ret));
2113 else if (pmd.num_matches == 0)
2114 ret2 = para_printf(&tad.pb, "no matches\n");
2115 if (ret2 >= 0 && tad.pb.offset)
2116 pass_buffer_as_shm(tad.pb.buf, tad.pb.offset, &fd);
2117 free(tad.pb.buf);
2118 }
2119
2120 int com_touch(struct command_context *cc)
2121 {
2122 struct com_touch_options cto = {
2123 .num_played = -1,
2124 .last_played = -1,
2125 .lyrics_id = -1,
2126 .image_id = -1,
2127 .amp = -1,
2128 };
2129 struct osl_object query = {.data = &cto, .size = sizeof(cto)};
2130 int i, ret;
2131
2132
2133 for (i = 1; i < cc->argc; i++) {
2134 const char *arg = cc->argv[i];
2135 if (arg[0] != '-')
2136 break;
2137 if (!strcmp(arg, "--")) {
2138 i++;
2139 break;
2140 }
2141 if (!strncmp(arg, "-n=", 3)) {
2142 ret = para_atoi32(arg + 3, &cto.num_played);
2143 if (ret < 0)
2144 return ret;
2145 continue;
2146 }
2147 if (!strncmp(arg, "-l=", 3)) {
2148 ret = para_atoi64(arg + 3, &cto.last_played);
2149 if (ret < 0)
2150 return ret;
2151 continue;
2152 }
2153 if (!strncmp(arg, "-y=", 3)) {
2154 ret = para_atoi32(arg + 3, &cto.lyrics_id);
2155 if (ret < 0)
2156 return ret;
2157 continue;
2158 }
2159 if (!strncmp(arg, "-i=", 3)) {
2160 ret = para_atoi32(arg + 3, &cto.image_id);
2161 if (ret < 0)
2162 return ret;
2163 continue;
2164 }
2165 if (!strncmp(arg, "-a=", 3)) {
2166 int32_t val;
2167 ret = para_atoi32(arg + 3, &val);
2168 if (ret < 0)
2169 return ret;
2170 if (val < 0 || val > 255)
2171 return -ERRNO_TO_PARA_ERROR(EINVAL);
2172 cto.amp = val;
2173 continue;
2174 }
2175 if (!strcmp(arg, "-p")) {
2176 cto.flags |= TOUCH_FLAG_FNM_PATHNAME;
2177 continue;
2178 }
2179 if (!strcmp(arg, "-v")) {
2180 cto.flags |= TOUCH_FLAG_VERBOSE;
2181 continue;
2182 }
2183 break; /* non-option starting with dash */
2184 }
2185 if (i >= cc->argc)
2186 return -E_AFT_SYNTAX;
2187 ret = send_option_arg_callback_request(&query, cc->argc - i,
2188 cc->argv + i, com_touch_callback, sc_send_result, cc);
2189 if (ret < 0)
2190 sc_send_va_buffer(&cc->scc, "%s\n", para_strerror(-ret));
2191 return ret;
2192 }
2193
2194 /** Flags for com_rm(). */
2195 enum rm_flags {
2196 /** -v */
2197 RM_FLAG_VERBOSE = 1,
2198 /** -f */
2199 RM_FLAG_FORCE = 2,
2200 /** -p */
2201 RM_FLAG_FNM_PATHNAME = 4
2202 };
2203
2204 /** Data passed to the action handler of com_rm(). */
2205 struct com_rm_action_data {
2206 /** Command line flags ((see \ref rm_flags). */
2207 uint32_t flags;
2208 /** Message buffer. */
2209 struct para_buffer pb;
2210 };
2211
2212 static int remove_audio_file(__a_unused struct osl_table *table,
2213 struct osl_row *row, const char *name, void *data)
2214 {
2215 struct com_rm_action_data *crd = data;
2216 int ret;
2217
2218 if (crd->flags & RM_FLAG_VERBOSE) {
2219 ret = para_printf(&crd->pb, "removing %s\n", name);
2220 if (ret < 0)
2221 return ret;
2222 }
2223 afs_event(AUDIO_FILE_REMOVE, &crd->pb, row);
2224 ret = osl(osl_del_row(audio_file_table, row));
2225 if (ret < 0)
2226 para_printf(&crd->pb, "%s: %s\n", name, para_strerror(-ret));
2227 return ret;
2228 }
2229
2230 static void com_rm_callback(int fd, const struct osl_object *query)
2231 {
2232 struct com_rm_action_data crd = {.flags = *(uint32_t *)query->data,
2233 .pb = {
2234 .max_size = shm_get_shmmax(),
2235 .private_data = &fd,
2236 .max_size_handler = afs_max_size_handler
2237 }
2238 };
2239 int ret;
2240 struct pattern_match_data pmd = {
2241 .table = audio_file_table,
2242 .loop_col_num = AFTCOL_HASH,
2243 .match_col_num = AFTCOL_PATH,
2244 .patterns = {.data = (char *)query->data + sizeof(uint32_t),
2245 .size = query->size - sizeof(uint32_t)},
2246 .data = &crd,
2247 .action = remove_audio_file
2248 };
2249 if (crd.flags & RM_FLAG_FNM_PATHNAME)
2250 pmd.fnmatch_flags |= FNM_PATHNAME;
2251 ret = for_each_matching_row(&pmd);
2252 if (ret < 0) {
2253 para_printf(&crd.pb, "%s\n", para_strerror(-ret));
2254 return;
2255 }
2256 if ((pmd.num_matches == 0) && !(crd.flags & RM_FLAG_FORCE))
2257 ret = para_printf(&crd.pb, "no matches -- nothing removed\n");
2258 else if (crd.flags & RM_FLAG_VERBOSE) {
2259 ret = para_printf(&crd.pb, "removed %u files\n",
2260 pmd.num_matches);
2261 }
2262 if (ret >= 0 && crd.pb.offset)
2263 pass_buffer_as_shm(crd.pb.buf, crd.pb.offset, &fd);
2264 free(crd.pb.buf);
2265 }
2266
2267 /* TODO options: -r (recursive) */
2268 int com_rm(struct command_context *cc)
2269 {
2270 uint32_t flags = 0;
2271 struct osl_object query = {.data = &flags, .size = sizeof(flags)};
2272 int i, ret;
2273
2274 for (i = 1; i < cc->argc; i++) {
2275 const char *arg = cc->argv[i];
2276 if (arg[0] != '-')
2277 break;
2278 if (!strcmp(arg, "--")) {
2279 i++;
2280 break;
2281 }
2282 if (!strcmp(arg, "-f")) {
2283 flags |= RM_FLAG_FORCE;
2284 continue;
2285 }
2286 if (!strcmp(arg, "-p")) {
2287 flags |= RM_FLAG_FNM_PATHNAME;
2288 continue;
2289 }
2290 if (!strcmp(arg, "-v")) {
2291 flags |= RM_FLAG_VERBOSE;
2292 continue;
2293 }
2294 break;
2295 }
2296 if (i >= cc->argc)
2297 return -E_AFT_SYNTAX;
2298 ret = send_option_arg_callback_request(&query, cc->argc - i,
2299 cc->argv + i, com_rm_callback, sc_send_result, cc);
2300 if (ret < 0)
2301 sc_send_va_buffer(&cc->scc, "%s\n", para_strerror(-ret));
2302 return ret;
2303 }
2304
2305 /**
2306 * Flags used by the cpsi command.
2307 *
2308 * \sa com_cpsi().
2309 */
2310 enum cpsi_flags {
2311 /** Whether the lyrics id should be copied. */
2312 CPSI_FLAG_COPY_LYRICS_ID = 1,
2313 /** Whether the image id should be copied. */
2314 CPSI_FLAG_COPY_IMAGE_ID = 2,
2315 /** Whether the lastplayed time should be copied. */
2316 CPSI_FLAG_COPY_LASTPLAYED = 4,
2317 /** Whether the numplayed count should be copied. */
2318 CPSI_FLAG_COPY_NUMPLAYED = 8,
2319 /** Whether the attributes should be copied. */
2320 CPSI_FLAG_COPY_ATTRIBUTES = 16,
2321 /** Activates verbose mode. */
2322 CPSI_FLAG_VERBOSE = 32,
2323 };
2324
2325 /** Data passed to the action handler of com_cpsi(). */
2326 struct cpsi_action_data {
2327 /** command line flags (see \ref cpsi_flags). */
2328 unsigned flags;
2329 /** Message buffer. */
2330 struct para_buffer pb;
2331 /** Values are copied from here. */
2332 struct afs_info source_afsi;
2333 };
2334
2335 static int copy_selector_info(__a_unused struct osl_table *table,
2336 struct osl_row *row, const char *name, void *data)
2337 {
2338 struct cpsi_action_data *cad = data;
2339 struct osl_object target_afsi_obj;
2340 int ret;
2341 struct afs_info old_afsi, target_afsi;
2342 struct afsi_change_event_data aced;
2343
2344 ret = get_afsi_object_of_row(row, &target_afsi_obj);
2345 if (ret < 0)
2346 return ret;
2347 load_afsi(&target_afsi, &target_afsi_obj);
2348 old_afsi = target_afsi;
2349 if (cad->flags & CPSI_FLAG_COPY_LYRICS_ID)
2350 target_afsi.lyrics_id = cad->source_afsi.lyrics_id;
2351 if (cad->flags & CPSI_FLAG_COPY_IMAGE_ID)
2352 target_afsi.image_id = cad->source_afsi.image_id;
2353 if (cad->flags & CPSI_FLAG_COPY_LASTPLAYED)
2354 target_afsi.last_played = cad->source_afsi.last_played;
2355 if (cad->flags & CPSI_FLAG_COPY_NUMPLAYED)
2356 target_afsi.num_played = cad->source_afsi.num_played;
2357 if (cad->flags & CPSI_FLAG_COPY_ATTRIBUTES)
2358 target_afsi.attributes = cad->source_afsi.attributes;
2359 save_afsi(&target_afsi, &target_afsi_obj); /* in-place update */
2360 if (cad->flags & CPSI_FLAG_VERBOSE) {
2361 ret = para_printf(&cad->pb, "copied afsi to %s\n", name);
2362 if (ret < 0)
2363 return ret;
2364 }
2365 aced.aft_row = row;
2366 aced.old_afsi = &old_afsi;
2367 afs_event(AFSI_CHANGE, &cad->pb, &aced);
2368 return 1;
2369 }
2370
2371 static void com_cpsi_callback(int fd, const struct osl_object *query)
2372 {
2373 struct cpsi_action_data cad = {
2374 .flags = *(unsigned *)query->data,
2375 .pb = {
2376 .max_size = shm_get_shmmax(),
2377 .private_data = &fd,
2378 .max_size_handler = afs_max_size_handler
2379 }
2380 };
2381 int ret;
2382 char *source_path = (char *)query->data + sizeof(cad.flags);
2383 struct pattern_match_data pmd = {
2384 .table = audio_file_table,
2385 .loop_col_num = AFTCOL_HASH,
2386 .match_col_num = AFTCOL_PATH,
2387 .patterns = {.data = source_path + strlen(source_path) + 1,
2388 .size = query->size - sizeof(cad.flags)
2389 - strlen(source_path) - 1},
2390 .data = &cad,
2391 .action = copy_selector_info
2392 };
2393
2394 ret = get_afsi_of_path(source_path, &cad.source_afsi);
2395 if (ret < 0)
2396 goto out;
2397 ret = for_each_matching_row(&pmd);
2398 out:
2399 if (ret < 0)
2400 para_printf(&cad.pb, "%s\n", para_strerror(-ret));
2401 else if (cad.flags & CPSI_FLAG_VERBOSE) {
2402 if (pmd.num_matches > 0)
2403 para_printf(&cad.pb, "copied requested afsi from %s "
2404 "to %u files\n", source_path, pmd.num_matches);
2405 else
2406 para_printf(&cad.pb, "nothing copied\n");
2407 }
2408 if (cad.pb.offset)
2409 pass_buffer_as_shm(cad.pb.buf, cad.pb.offset, &fd);
2410 free(cad.pb.buf);
2411 }
2412
2413 int com_cpsi(struct command_context *cc)
2414 {
2415 unsigned flags = 0;
2416 int i, ret;
2417 struct osl_object options = {.data = &flags, .size = sizeof(flags)};
2418
2419 for (i = 1; i < cc->argc; i++) {
2420 const char *arg = cc->argv[i];
2421 if (arg[0] != '-')
2422 break;
2423 if (!strcmp(arg, "--")) {
2424 i++;
2425 break;
2426 }
2427 if (!strcmp(arg, "-y")) {
2428 flags |= CPSI_FLAG_COPY_LYRICS_ID;
2429 continue;
2430 }
2431 if (!strcmp(arg, "-i")) {
2432 flags |= CPSI_FLAG_COPY_IMAGE_ID;
2433 continue;
2434 }
2435 if (!strcmp(arg, "-l")) {
2436 flags |= CPSI_FLAG_COPY_LASTPLAYED;
2437 continue;
2438 }
2439 if (!strcmp(arg, "-n")) {
2440 flags |= CPSI_FLAG_COPY_NUMPLAYED;
2441 continue;
2442 }
2443 if (!strcmp(arg, "-a")) {
2444 flags |= CPSI_FLAG_COPY_ATTRIBUTES;
2445 continue;
2446 }
2447 if (!strcmp(arg, "-v")) {
2448 flags |= CPSI_FLAG_VERBOSE;
2449 continue;
2450 }
2451 break;
2452 }
2453 if (i + 1 >= cc->argc) /* need at least source file and pattern */
2454 return -E_AFT_SYNTAX;
2455 if (!(flags & ~CPSI_FLAG_VERBOSE)) /* no copy flags given */
2456 flags = ~(unsigned)CPSI_FLAG_VERBOSE | flags;
2457 ret = send_option_arg_callback_request(&options, cc->argc - i,
2458 cc->argv + i, com_cpsi_callback, sc_send_result, cc);
2459 if (ret < 0)
2460 sc_send_va_buffer(&cc->scc, "%s\n", para_strerror(-ret));
2461 return ret;
2462 }
2463
2464 static void afs_stat_callback(int fd, const struct osl_object *query)
2465 {
2466 int *parser_friendly = query->data;
2467 char *buf = *parser_friendly?
2468 parser_friendly_status_items : status_items;
2469
2470 if (!buf)
2471 return;
2472 pass_buffer_as_shm(buf, strlen(buf), &fd);
2473 }
2474
2475 /**
2476 * Get the current afs status items from the afs process and send it.
2477 *
2478 * \param cc The command context, used e.g. for data encryption.
2479 * \param parser_friendly Whether parser-friendly output format should be used.
2480 *
2481 * As the contents of the afs status items change in time and the command
2482 * handler only has a COW version created at fork time, it can not send
2483 * up-to-date afs status items directly. Therefore the usual callback mechanism
2484 * is used to pass the status items from the afs process to the command handler
2485 * via a shared memory area and a pipe.
2486 *
2487 * \return The return value of the underyling call to \ref send_callback_request().
2488 */
2489 int send_afs_status(struct command_context *cc, int parser_friendly)
2490 {
2491 struct osl_object query = {.data = &parser_friendly,
2492 .size = sizeof(parser_friendly)};
2493
2494 return send_callback_request(afs_stat_callback, &query, sc_send_result, cc);
2495 }
2496
2497 /* TODO: optionally fix problems by removing offending rows */
2498 static int check_audio_file(struct osl_row *row, void *data)
2499 {
2500 char *path;
2501 struct para_buffer *pb = data;
2502 struct stat statbuf;
2503 int ret = get_audio_file_path_of_row(row, &path);
2504 struct afs_info afsi;
2505 char *blob_name;
2506
2507 if (ret < 0)
2508 return para_printf(pb, "%s\n", para_strerror(-ret));
2509 if (stat(path, &statbuf) < 0) {
2510 ret = para_printf(pb, "%s: stat error (%s)\n", path, strerror(errno));
2511 if (ret < 0)
2512 return ret;
2513 } else {
2514 if (!S_ISREG(statbuf.st_mode)) {
2515 ret = para_printf(pb, "%s: not a regular file\n", path);
2516 if (ret < 0)
2517 return ret;
2518 }
2519 }
2520 ret = get_afsi_of_row(row, &afsi);
2521 if (ret < 0)
2522 return para_printf(pb, "%s: %s\n", path, para_strerror(-ret));
2523 ret = lyr_get_name_by_id(afsi.lyrics_id, &blob_name);
2524 if (ret < 0) {
2525 ret = para_printf(pb, "%s lyrics id %u: %s\n", path, afsi.lyrics_id,
2526 para_strerror(-ret));
2527 if (ret < 0)
2528 return ret;
2529 }
2530 ret = img_get_name_by_id(afsi.image_id, &blob_name);
2531 if (ret < 0)
2532 ret = para_printf(pb, "%s image id %u: %s\n", path, afsi.image_id,
2533 para_strerror(-ret));
2534 return ret;
2535 }
2536
2537 /**
2538 * Check the audio file table for inconsistencies.
2539 *
2540 * \param fd The afs socket.
2541 * \param query Unused.
2542 *
2543 * This function always succeeds.
2544 *
2545 * \sa com_check().
2546 */
2547 void aft_check_callback(int fd, __a_unused const struct osl_object *query)
2548 {
2549 struct para_buffer pb = {
2550 .max_size = shm_get_shmmax(),
2551 .private_data = &(struct afs_max_size_handler_data) {
2552 .fd = fd,
2553 },
2554 .max_size_handler = afs_max_size_handler
2555 };
2556 int ret = para_printf(&pb, "checking audio file table...\n");
2557
2558 if (ret < 0)
2559 return;
2560 audio_file_loop(&pb, check_audio_file);
2561 if (pb.offset)
2562 pass_buffer_as_shm(pb.buf, pb.offset, &fd);
2563 free(pb.buf);
2564 }
2565
2566 /**
2567 * Close the audio file table.
2568 *
2569 * \param flags Usual flags that are passed to osl_close_table().
2570 *
2571 * \sa osl_close_table().
2572 */
2573 static void aft_close(void)
2574 {
2575 osl_close_table(audio_file_table, OSL_MARK_CLEAN);
2576 audio_file_table = NULL;
2577 }
2578
2579 /**
2580 * Open the audio file table.
2581 *
2582 * \param dir The database directory.
2583 *
2584 * \return Standard.
2585 *
2586 * \sa osl_open_table().
2587 */
2588 static int aft_open(const char *dir)
2589 {
2590 int ret;
2591
2592 audio_file_table_desc.dir = dir;
2593 ret = osl(osl_open_table(&audio_file_table_desc, &audio_file_table));
2594 if (ret >= 0) {
2595 unsigned num;
2596 osl_get_num_rows(audio_file_table, &num);
2597 PARA_INFO_LOG("audio file table contains %d files\n", num);
2598 return ret;
2599 }
2600 PARA_INFO_LOG("failed to open audio file table\n");
2601 audio_file_table = NULL;
2602 if (ret >= 0 || ret == -OSL_ERRNO_TO_PARA_ERROR(E_OSL_NOENT))
2603 return 1;
2604 return ret;
2605 }
2606
2607 static int aft_create(const char *dir)
2608 {
2609 audio_file_table_desc.dir = dir;
2610 return osl(osl_create_table(&audio_file_table_desc));
2611 }
2612
2613 static int clear_attribute(struct osl_row *row, void *data)
2614 {
2615 struct rmatt_event_data *red = data;
2616 struct afs_info afsi;
2617 struct osl_object obj;
2618 int ret = get_afsi_object_of_row(row, &obj);
2619 uint64_t mask = ~(1ULL << red->bitnum);
2620
2621 if (ret < 0)
2622 return ret;
2623 ret = load_afsi(&afsi, &obj);
2624 if (ret < 0)
2625 return ret;
2626 afsi.attributes &= mask;
2627 save_afsi(&afsi, &obj);
2628 return 1;
2629 }
2630
2631 static int aft_event_handler(enum afs_events event, struct para_buffer *pb,
2632 void *data)
2633 {
2634 int ret;
2635
2636 switch(event) {
2637 case ATTRIBUTE_REMOVE: {
2638 const struct rmatt_event_data *red = data;
2639 ret = para_printf(pb, "clearing attribute %s (bit %u) from all "
2640 "entries in the audio file table\n", red->name,
2641 red->bitnum);
2642 if (ret < 0)
2643 return ret;
2644 return audio_file_loop(data, clear_attribute);
2645 }
2646 default:
2647 return 1;
2648 }
2649 }
2650
2651 /**
2652 * Initialize the audio file table.
2653 *
2654 * \param t Pointer to the structure to be initialized.
2655 */
2656 void aft_init(struct afs_table *t)
2657 {
2658 t->open = aft_open;
2659 t->close = aft_close;
2660 t->create = aft_create;
2661 t->event_handler = aft_event_handler;
2662 }