aft.c: Don't call osl_close_disk_object() on failure.
[paraslash.git] / aft.c
1 /*
2 * Copyright (C) 2007-2013 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 "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 /** The flags accepted by the ls command. */
76 enum ls_flags {
77 /** -p */
78 LS_FLAG_FULL_PATH = 1,
79 /** -a */
80 LS_FLAG_ADMISSIBLE_ONLY = 2,
81 /** -r */
82 LS_FLAG_REVERSE = 4,
83 /** -d */
84 LS_FLAG_UNIXDATE = 8,
85 };
86
87 /**
88 * The size of the individual output fields of the ls command.
89 *
90 * These depend on the actual content being listed. If, for instance only files
91 * with duration less than an hour are being listed, then the duration with is
92 * made smaller because then the duration is listed as mm:ss rather than
93 * hh:mm:ss.
94 */
95 struct ls_widths {
96 /** size of the score field. */
97 unsigned short score_width;
98 /** size of the image id field. */
99 unsigned short image_id_width;
100 /** size of the lyrics id field. */
101 unsigned short lyrics_id_width;
102 /** size of the bitrate field. */
103 unsigned short bitrate_width;
104 /** size of the frequency field. */
105 unsigned short frequency_width;
106 /** size of the duration field. */
107 unsigned short duration_width;
108 /** size of the num played field. */
109 unsigned short num_played_width;
110 /** size of the amp field. */
111 unsigned short amp_width;
112 /** size of the audio format field. */
113 unsigned short audio_format_width;
114 };
115
116 /** Data passed from the ls command handler to its callback function. */
117 struct ls_options {
118 /** The given command line flags. */
119 unsigned flags;
120 /** The sorting method given at the command line. */
121 enum ls_sorting_method sorting;
122 /** The given listing mode (short, long, verbose, mbox). */
123 enum ls_listing_mode mode;
124 /** The arguments passed to the ls command. */
125 char **patterns;
126 /** Number of non-option arguments. */
127 int num_patterns;
128 /** Used for long listing mode to align the output fields. */
129 struct ls_widths widths;
130 /** Size of the \a data array. */
131 uint32_t array_size;
132 /** Number of used entries in the data array. */
133 uint32_t num_matching_paths;
134 /** Array of matching entries. */
135 struct ls_data *data;
136 /** Used to sort the array. */
137 struct ls_data **data_ptr;
138 };
139
140 /**
141 * Describes the layout of the mmapped-afs info struct.
142 *
143 * \sa struct afs_info.
144 */
145 enum afsi_offsets {
146 /** Where .last_played is stored. */
147 AFSI_LAST_PLAYED_OFFSET = 0,
148 /** Storage position of the attributes bitmap. */
149 AFSI_ATTRIBUTES_OFFSET = 8,
150 /** Storage position of the .num_played field. */
151 AFSI_NUM_PLAYED_OFFSET = 16,
152 /** Storage position of the .image_id field. */
153 AFSI_IMAGE_ID_OFFSET = 20,
154 /** Storage position of the .lyrics_id field. */
155 AFSI_LYRICS_ID_OFFSET = 24,
156 /** Storage position of the .audio_format_id field. */
157 AFSI_AUDIO_FORMAT_ID_OFFSET = 28,
158 /** Storage position of the amplification field. */
159 AFSI_AMP_OFFSET = 29,
160 /** 2 bytes reserved space for future usage. */
161 AFSI_AUDIO_FORMAT_UNUSED_OFFSET = 30,
162 /** On-disk storage space needed. */
163 AFSI_SIZE = 32
164 };
165
166 /**
167 * Convert a struct afs_info to an osl object.
168 *
169 * \param afsi Pointer to the audio file info to be converted.
170 * \param obj Result pointer.
171 *
172 * \sa load_afsi().
173 */
174 void save_afsi(struct afs_info *afsi, struct osl_object *obj)
175 {
176 char *buf = obj->data;
177
178 write_u64(buf + AFSI_LAST_PLAYED_OFFSET, afsi->last_played);
179 write_u64(buf + AFSI_ATTRIBUTES_OFFSET, afsi->attributes);
180 write_u32(buf + AFSI_NUM_PLAYED_OFFSET, afsi->num_played);
181 write_u32(buf + AFSI_IMAGE_ID_OFFSET, afsi->image_id);
182 write_u32(buf + AFSI_LYRICS_ID_OFFSET, afsi->lyrics_id);
183 write_u8(buf + AFSI_AUDIO_FORMAT_ID_OFFSET,
184 afsi->audio_format_id);
185 write_u8(buf + AFSI_AMP_OFFSET, afsi->amp);
186 memset(buf + AFSI_AUDIO_FORMAT_UNUSED_OFFSET, 0, 2);
187 }
188
189 /**
190 * Get the audio file selector info struct stored in an osl object.
191 *
192 * \param afsi Points to the audio_file info structure to be filled in.
193 * \param obj The osl object holding the data.
194 *
195 * \return Positive on success, negative on errors. Possible errors: \p E_BAD_AFS.
196 *
197 * \sa save_afsi().
198 */
199 int load_afsi(struct afs_info *afsi, struct osl_object *obj)
200 {
201 char *buf = obj->data;
202 if (obj->size < AFSI_SIZE)
203 return -E_BAD_AFSI;
204 afsi->last_played = read_u64(buf + AFSI_LAST_PLAYED_OFFSET);
205 afsi->attributes = read_u64(buf + AFSI_ATTRIBUTES_OFFSET);
206 afsi->num_played = read_u32(buf + AFSI_NUM_PLAYED_OFFSET);
207 afsi->image_id = read_u32(buf + AFSI_IMAGE_ID_OFFSET);
208 afsi->lyrics_id = read_u32(buf + AFSI_LYRICS_ID_OFFSET);
209 afsi->audio_format_id = read_u8(buf +
210 AFSI_AUDIO_FORMAT_ID_OFFSET);
211 afsi->amp = read_u8(buf + AFSI_AMP_OFFSET);
212 return 1;
213 }
214
215 /** The columns of the audio file table. */
216 enum audio_file_table_columns {
217 /** The hash on the content of the audio file. */
218 AFTCOL_HASH,
219 /** The full path in the filesystem. */
220 AFTCOL_PATH,
221 /** The audio file selector info. */
222 AFTCOL_AFSI,
223 /** The audio format handler info. */
224 AFTCOL_AFHI,
225 /** The chunk table info and the chunk table of the audio file. */
226 AFTCOL_CHUNKS,
227 /** The number of columns of this table. */
228 NUM_AFT_COLUMNS
229 };
230
231 /**
232 * Compare two osl objects pointing to hash values.
233 *
234 * \param obj1 Pointer to the first hash object.
235 * \param obj2 Pointer to the second hash object.
236 *
237 * \return The values required for an osl compare function.
238 *
239 * \sa osl_compare_func, uint32_compare().
240 */
241 static int aft_hash_compare(const struct osl_object *obj1, const struct osl_object *obj2)
242 {
243 return hash_compare((unsigned char *)obj1->data, (unsigned char *)obj2->data);
244 }
245
246 static struct osl_column_description aft_cols[] = {
247 [AFTCOL_HASH] = {
248 .storage_type = OSL_MAPPED_STORAGE,
249 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE | OSL_UNIQUE,
250 .name = "hash",
251 .compare_function = aft_hash_compare,
252 .data_size = HASH_SIZE
253 },
254 [AFTCOL_PATH] = {
255 .storage_type = OSL_MAPPED_STORAGE,
256 .storage_flags = OSL_RBTREE | OSL_UNIQUE,
257 .name = "path",
258 .compare_function = string_compare,
259 },
260 [AFTCOL_AFSI] = {
261 .storage_type = OSL_MAPPED_STORAGE,
262 .storage_flags = OSL_FIXED_SIZE,
263 .name = "afs_info",
264 .data_size = AFSI_SIZE
265 },
266 [AFTCOL_AFHI] = {
267 .storage_type = OSL_MAPPED_STORAGE,
268 .name = "afh_info",
269 },
270 [AFTCOL_CHUNKS] = {
271 .storage_type = OSL_DISK_STORAGE,
272 .name = "chunks",
273 }
274 };
275
276 static struct osl_table_description audio_file_table_desc = {
277 .name = "audio_files",
278 .num_columns = NUM_AFT_COLUMNS,
279 .flags = OSL_LARGE_TABLE,
280 .column_descriptions = aft_cols
281 };
282
283 /* We don't want dot or dot-dot anywhere. */
284 static int verify_dotfile(const char *rest)
285 {
286 /*
287 * The first character was '.', but that has already been discarded, we
288 * now test the rest.
289 */
290 switch (*rest) {
291 case '\0': case '/': /* /foo/. and /foo/./bar are not ok */
292 return -1;
293 case '.': /* path start with /foo/.. */
294 if (rest[1] == '\0' || rest[1] == '/')
295 return -1; /* /foo/.. or /foo/../bar are not ok */
296 /* /foo/..bar is ok */
297 }
298 return 1;
299 }
300
301 /*
302 * We fundamentally don't like some paths: We don't want double slashes or
303 * slashes at the end that can make pathnames ambiguous.
304 */
305 static int verify_path(const char *orig_path, char **resolved_path)
306 {
307 char c;
308 size_t len;
309 char *path;
310
311 if (*orig_path != '/') /* we only accept absolute paths */
312 return -E_BAD_PATH;
313 len = strlen(orig_path);
314 *resolved_path = para_strdup(orig_path);
315 path = *resolved_path;
316 while (len > 1 && path[--len] == '/')
317 path[len] = '\0'; /* remove slash at the end */
318 c = *path++;
319 while (c) {
320 if (c == '/') {
321 c = *path++;
322 switch (c) {
323 case '/': /* double slash */
324 goto bad_path;
325 case '.':
326 if (verify_dotfile(path) < 0)
327 goto bad_path;
328 default:
329 continue;
330 }
331 }
332 c = *path++;
333 }
334 return 1;
335 bad_path:
336 free(*resolved_path);
337 return -E_BAD_PATH;
338 }
339
340 /** The on-disk layout of a afhi struct. */
341 enum afhi_offsets {
342 /** Where the number of seconds is stored. */
343 AFHI_SECONDS_TOTAL_OFFSET = 0,
344 /** Position of the bitrate. */
345 AFHI_BITRATE_OFFSET = 4,
346 /** Position of the frequency. */
347 AFHI_FREQUENCY_OFFSET = 8,
348 /** Was: Location of the audio file header. */
349 AFHI_UNUSED1_OFFSET = 12,
350 /* Length of the audio file header. Zero means: No header. */
351 AFHI_HEADER_LEN_OFFSET = 16,
352 /** The total number of chunks (4 bytes). */
353 CHUNKS_TOTAL_OFFSET = 20,
354 /** The length of the audio file header (4 bytes). */
355 HEADER_LEN_OFFSET = 24,
356 /** Was: The start of the audio file header (4 bytes). */
357 AFHI_UNUSED2_OFFSET = 28,
358 /** The seconds part of the chunk time (4 bytes). */
359 CHUNK_TV_TV_SEC_OFFSET = 32,
360 /** The microseconds part of the chunk time (4 bytes). */
361 CHUNK_TV_TV_USEC_OFFSET = 36,
362 /** Number of channels is stored here. (1 byte) */
363 AFHI_CHANNELS_OFFSET = 40,
364 /** The tag info position. */
365 AFHI_INFO_STRING_OFFSET = 41,
366 /** Minimal on-disk size of a valid afhi struct. */
367 MIN_AFHI_SIZE = 47, /* at least 6 null bytes for techinfo/tags */
368 };
369
370 static unsigned sizeof_afhi_buf(const struct afh_info *afhi)
371 {
372 if (!afhi)
373 return 0;
374 return MIN_AFHI_SIZE
375 + strlen(afhi->techinfo)
376 + strlen(afhi->tags.artist)
377 + strlen(afhi->tags.title)
378 + strlen(afhi->tags.year)
379 + strlen(afhi->tags.album)
380 + strlen(afhi->tags.comment);
381 }
382
383 static void save_afhi(struct afh_info *afhi, char *buf)
384 {
385 char *p;
386
387 if (!afhi)
388 return;
389 write_u32(buf + AFHI_SECONDS_TOTAL_OFFSET, afhi->seconds_total);
390 write_u32(buf + AFHI_BITRATE_OFFSET, afhi->bitrate);
391 write_u32(buf + AFHI_FREQUENCY_OFFSET, afhi->frequency);
392 write_u32(buf + AFHI_UNUSED1_OFFSET, 0);
393 write_u32(buf + AFHI_HEADER_LEN_OFFSET, afhi->header_len);
394 write_u8(buf + AFHI_CHANNELS_OFFSET, afhi->channels);
395 write_u32(buf + CHUNKS_TOTAL_OFFSET, afhi->chunks_total);
396 write_u32(buf + HEADER_LEN_OFFSET, afhi->header_len);
397 write_u32(buf + AFHI_UNUSED2_OFFSET, 0);
398 write_u32(buf + CHUNK_TV_TV_SEC_OFFSET, afhi->chunk_tv.tv_sec);
399 write_u32(buf + CHUNK_TV_TV_USEC_OFFSET, afhi->chunk_tv.tv_usec);
400 p = buf + AFHI_INFO_STRING_OFFSET;
401 /* The sprintf's below are OK as our caller made sure that buf is large enough */
402 p += sprintf(p, "%s", afhi->techinfo) + 1;
403 p += sprintf(p, "%s", afhi->tags.artist) + 1;
404 p += sprintf(p, "%s", afhi->tags.title) + 1;
405 p += sprintf(p, "%s", afhi->tags.year) + 1;
406 p += sprintf(p, "%s", afhi->tags.album) + 1;
407 sprintf(p, "%s", afhi->tags.comment);
408 }
409
410 static void load_afhi(const char *buf, struct afh_info *afhi)
411 {
412 afhi->seconds_total = read_u32(buf + AFHI_SECONDS_TOTAL_OFFSET);
413 afhi->bitrate = read_u32(buf + AFHI_BITRATE_OFFSET);
414 afhi->frequency = read_u32(buf + AFHI_FREQUENCY_OFFSET);
415 afhi->header_len = read_u32(buf + AFHI_HEADER_LEN_OFFSET);
416 afhi->channels = read_u8(buf + AFHI_CHANNELS_OFFSET);
417 afhi->chunks_total = read_u32(buf + CHUNKS_TOTAL_OFFSET);
418 afhi->header_len = read_u32(buf + HEADER_LEN_OFFSET);
419 afhi->chunk_tv.tv_sec = read_u32(buf + CHUNK_TV_TV_SEC_OFFSET);
420 afhi->chunk_tv.tv_usec = read_u32(buf + CHUNK_TV_TV_USEC_OFFSET);
421 afhi->techinfo = (char *)buf + AFHI_INFO_STRING_OFFSET;
422 afhi->tags.artist = afhi->techinfo + strlen(afhi->techinfo) + 1;
423 afhi->tags.title = afhi->tags.artist + strlen(afhi->tags.artist) + 1;
424 afhi->tags.year = afhi->tags.title + strlen(afhi->tags.title) + 1;
425 afhi->tags.album = afhi->tags.year + strlen(afhi->tags.year) + 1;
426 afhi->tags.comment = afhi->tags.album + strlen(afhi->tags.album) + 1;
427 }
428
429 static unsigned sizeof_chunk_table(struct afh_info *afhi)
430 {
431 if (!afhi)
432 return 0;
433 return 4 * (afhi->chunks_total + 1);
434 }
435
436 static uint32_t save_chunk_table(struct afh_info *afhi, char *buf)
437 {
438 int i;
439 uint32_t max = 0, old = 0;
440
441 for (i = 0; i <= afhi->chunks_total; i++) {
442 uint32_t val = afhi->chunk_table[i];
443 write_u32(buf + 4 * i, val);
444 /*
445 * If the first chunk is the header, do not consider it for the
446 * calculation of the largest chunk size.
447 */
448 if (i == 0 || (i == 1 && afhi->header_len > 0)) {
449 old = val;
450 continue;
451 }
452 max = PARA_MAX(max, val - old);
453 old = val;
454 }
455 return max;
456 }
457
458 static void load_chunk_table(struct afh_info *afhi, char *buf)
459 {
460 int i;
461
462 afhi->chunk_table = para_malloc(sizeof_chunk_table(afhi));
463 for (i = 0; i <= afhi->chunks_total; i++)
464 afhi->chunk_table[i] = read_u32(buf + 4 * i);
465 }
466
467 /**
468 * Get the row of the audio file table corresponding to the given path.
469 *
470 * \param path The full path of the audio file.
471 * \param row Result pointer.
472 *
473 * \return Standard.
474 */
475 int aft_get_row_of_path(const char *path, struct osl_row **row)
476 {
477 struct osl_object obj = {.data = (char *)path, .size = strlen(path) + 1};
478
479 return osl(osl_get_row(audio_file_table, AFTCOL_PATH, &obj, row));
480 }
481
482 /**
483 * Get the row of the audio file table corresponding to the given hash value.
484 *
485 * \param hash The hash value of the desired audio file.
486 * \param row Result pointer.
487 *
488 * \return Standard.
489 */
490 static int aft_get_row_of_hash(unsigned char *hash, struct osl_row **row)
491 {
492 const struct osl_object obj = {.data = hash, .size = HASH_SIZE};
493 return osl(osl_get_row(audio_file_table, AFTCOL_HASH, &obj, row));
494 }
495
496 /**
497 * Get the osl object holding the audio file selector info of a row.
498 *
499 * \param row Pointer to a row in the audio file table.
500 * \param obj Result pointer.
501 *
502 * \return Standard.
503 */
504 int get_afsi_object_of_row(const struct osl_row *row, struct osl_object *obj)
505 {
506 return osl(osl_get_object(audio_file_table, row, AFTCOL_AFSI, obj));
507 }
508
509 /**
510 * Get the osl object holding the audio file selector info, given a path.
511 *
512 *
513 * \param path The full path of the audio file.
514 * \param obj Result pointer.
515 *
516 * \return Positive on success, negative on errors.
517 */
518 static int get_afsi_object_of_path(const char *path, struct osl_object *obj)
519 {
520 struct osl_row *row;
521 int ret = aft_get_row_of_path(path, &row);
522 if (ret < 0)
523 return ret;
524 return get_afsi_object_of_row(row, obj);
525 }
526
527 /**
528 * Get the audio file selector info, given a row of the audio file table.
529 *
530 * \param row Pointer to a row in the audio file table.
531 * \param afsi Result pointer.
532 *
533 * \return Positive on success, negative on errors.
534 */
535 int get_afsi_of_row(const struct osl_row *row, struct afs_info *afsi)
536 {
537 struct osl_object obj;
538 int ret = get_afsi_object_of_row(row, &obj);
539 if (ret < 0)
540 return ret;
541 return load_afsi(afsi, &obj);
542 }
543
544 /**
545 * Get the audio file selector info, given the path of an audio table.
546 *
547 * \param path The full path of the audio file.
548 * \param afsi Result pointer.
549 *
550 * \return Positive on success, negative on errors.
551 */
552 int get_afsi_of_path(const char *path, struct afs_info *afsi)
553 {
554 struct osl_object obj;
555 int ret = get_afsi_object_of_path(path, &obj);
556 if (ret < 0)
557 return ret;
558 return load_afsi(afsi, &obj);
559 }
560
561 /**
562 * Get the path of an audio file, given a row of the audio file table.
563 *
564 * \param row Pointer to a row in the audio file table.
565 * \param path Result pointer.
566 *
567 * The result is a pointer to mmapped data. The caller must not attempt
568 * to free it.
569 *
570 * \return Standard.
571 */
572 int get_audio_file_path_of_row(const struct osl_row *row, char **path)
573 {
574 struct osl_object path_obj;
575 int ret = osl(osl_get_object(audio_file_table, row, AFTCOL_PATH,
576 &path_obj));
577 if (ret < 0)
578 return ret;
579 *path = path_obj.data;
580 return 1;
581 }
582
583 /**
584 * Get the object containing the hash value of an audio file, given a row.
585 *
586 * \param row Pointer to a row of the audio file table.
587 * \param obj Result pointer.
588 *
589 * \return The return value of the underlying call to osl_get_object().
590 *
591 * \sa get_hash_of_row().
592 */
593 static int get_hash_object_of_aft_row(const struct osl_row *row,
594 struct osl_object *obj)
595 {
596 return osl(osl_get_object(audio_file_table, row, AFTCOL_HASH, obj));
597 }
598
599 /**
600 * Get the hash value of an audio file, given a row of the audio file table.
601 *
602 * \param row Pointer to a row of the audio file table.
603 * \param hash Result pointer.
604 *
605 * \a hash points to mapped data and must not be freed by the caller.
606 *
607 * \return The return value of the underlying call to
608 * get_hash_object_of_aft_row().
609 */
610 static int get_hash_of_row(const struct osl_row *row, unsigned char **hash)
611 {
612 struct osl_object obj;
613 int ret = get_hash_object_of_aft_row(row, &obj);
614
615 if (ret < 0)
616 return ret;
617 *hash = obj.data;
618 return 1;
619 }
620
621 /**
622 * Get the audio format handler info, given a row of the audio file table.
623 *
624 * \param row Pointer to a row of the audio file table.
625 * \param afhi Result pointer.
626 *
627 * \return The return value of the underlying call to osl_get_object().
628 *
629 * \sa get_chunk_table_of_row().
630 */
631 int get_afhi_of_row(const struct osl_row *row, struct afh_info *afhi)
632 {
633 struct osl_object obj;
634 int ret = osl(osl_get_object(audio_file_table, row, AFTCOL_AFHI,
635 &obj));
636 if (ret < 0)
637 return ret;
638 load_afhi(obj.data, afhi);
639 return 1;
640 }
641
642 /* returns shmid on success */
643 static int save_afd(struct audio_file_data *afd)
644 {
645 size_t size = sizeof(*afd) + sizeof_chunk_table(&afd->afhi);
646 int shmid, ret = shm_new(size);
647 void *shm_afd;
648 char *buf;
649
650 if (ret < 0)
651 return ret;
652 shmid = ret;
653 ret = shm_attach(shmid, ATTACH_RW, &shm_afd);
654 if (ret < 0)
655 goto err;
656 buf = shm_afd;
657 buf += sizeof(*afd);
658 afd->max_chunk_size = save_chunk_table(&afd->afhi, buf);
659 *(struct audio_file_data *)shm_afd = *afd;
660 shm_detach(shm_afd);
661 return shmid;
662 err:
663 shm_destroy(shmid);
664 return ret;
665 }
666
667 /**
668 * Extract a afd stored in a shared memory area.
669 *
670 * Attach the shared memory area given by \a shmid, load the audio file data
671 * stored therein and detach the area afterwards. Called by vss, after
672 * receiving a positive response to the request for the next audio file.
673 +
674 * \param shmid The identifier of the shared memory area containing the afd.
675 * \param afd Result pointer.
676 *
677 * \return Standard.
678 */
679 int load_afd(int shmid, struct audio_file_data *afd)
680 {
681 void *shm_afd;
682 char *buf;
683 int ret;
684
685 ret = shm_attach(shmid, ATTACH_RO, &shm_afd);
686 if (ret < 0)
687 return ret;
688 *afd = *(struct audio_file_data *)shm_afd;
689 buf = shm_afd;
690 buf += sizeof(*afd);
691 load_chunk_table(&afd->afhi, buf);
692 shm_detach(shm_afd);
693 return 1;
694 }
695
696 static int get_local_time(uint64_t *seconds, char *buf, size_t size,
697 time_t current_time, enum ls_listing_mode lm)
698 {
699 struct tm t;
700
701 if (!localtime_r((time_t *)seconds, &t))
702 return -E_LOCALTIME;
703 if (lm == LS_MODE_MBOX) {
704 if (!strftime(buf, size, "%c", &t))
705 return -E_STRFTIME;
706 return 1;
707 }
708 if (*seconds + 6 * 30 * 24 * 3600 > current_time) {
709 if (!strftime(buf, size, "%b %e %k:%M", &t))
710 return -E_STRFTIME;
711 return 1;
712 }
713 if (!strftime(buf, size, "%b %e %Y", &t))
714 return -E_STRFTIME;
715 return 1;
716 }
717
718 /** Compute the number of (decimal) digits of a number. */
719 #define GET_NUM_DIGITS(x, num) { \
720 typeof((x)) _tmp = PARA_ABS(x); \
721 *num = 1; \
722 if ((_tmp)) \
723 while ((_tmp) > 9) { \
724 (_tmp) /= 10; \
725 (*num)++; \
726 } \
727 }
728
729 __a_const static short unsigned get_duration_width(int seconds)
730 {
731 short unsigned width;
732 unsigned hours = seconds / 3600, mins = (seconds % 3600) / 60;
733
734 if (!hours) /* less than one hour => m:ss or mm:ss => 4 or 5 digits */
735 return 4 + (mins > 9);
736 /* more than one hour => h:mm:ss, hh:mm:ss, hhh:mm:ss, ... */
737 GET_NUM_DIGITS(hours, &width);
738 return width + 6;
739 }
740
741 static void get_duration_buf(int seconds, char *buf, struct ls_options *opts)
742 {
743 unsigned hours = seconds / 3600, mins = (seconds % 3600) / 60;
744 short unsigned max_width;
745
746 if (!hours) { /* m:ss or mm:ss */
747 max_width = opts->mode == LS_MODE_LONG?
748 opts->widths.duration_width : 4;
749 sprintf(buf, "%*u:%02u", max_width - 3, mins, seconds % 60);
750 } else { /* more than one hour => h:mm:ss, hh:mm:ss, hhh:mm:ss, ... */
751 max_width = opts->mode == LS_MODE_LONG?
752 opts->widths.duration_width : 7;
753 sprintf(buf, "%*u:%02u:%02u", max_width - 6, hours, mins,
754 seconds % 60);
755 }
756 }
757
758
759 static int write_attribute_items(struct para_buffer *b,
760 const char *att_bitmap, struct afs_info *afsi)
761 {
762 char *att_text;
763 int ret;
764
765 ret = WRITE_STATUS_ITEM(b, SI_ATTRIBUTES_BITMAP, "%s\n", att_bitmap);
766 if (ret < 0)
767 return ret;
768 ret = get_attribute_text(&afsi->attributes, " ", &att_text);
769 if (ret < 0)
770 return ret;
771 ret = WRITE_STATUS_ITEM(b, SI_ATTRIBUTES_TXT, "%s\n", att_text);
772 free(att_text);
773 return ret;
774 }
775
776 static int write_lyrics_items(struct para_buffer *b, struct afs_info *afsi)
777 {
778 char *lyrics_name;
779 int ret;
780
781 ret = WRITE_STATUS_ITEM(b, SI_LYRICS_ID, "%u\n", afsi->lyrics_id);
782 if (ret < 0)
783 return ret;
784 lyr_get_name_by_id(afsi->lyrics_id, &lyrics_name);
785 return WRITE_STATUS_ITEM(b, SI_LYRICS_NAME, "%s\n", lyrics_name?
786 lyrics_name : "(none)");
787 }
788
789 static int write_image_items(struct para_buffer *b, struct afs_info *afsi)
790 {
791 char *image_name;
792 int ret;
793
794 ret = WRITE_STATUS_ITEM(b, SI_IMAGE_ID, "%u\n", afsi->image_id);
795 if (ret < 0)
796 return ret;
797 img_get_name_by_id(afsi->image_id, &image_name);
798 return WRITE_STATUS_ITEM(b, SI_IMAGE_NAME, "%s\n", image_name?
799 image_name : "(none)");
800 }
801
802 static int write_filename_items(struct para_buffer *b, const char *path,
803 unsigned flags)
804 {
805 char *val;
806 int ret;
807
808 if (!(flags & LS_FLAG_FULL_PATH))
809 return WRITE_STATUS_ITEM(b, SI_BASENAME, "%s\n", path);
810 ret = WRITE_STATUS_ITEM(b, SI_PATH, "%s\n", path);
811 if (ret < 0)
812 return ret;
813 val = para_basename(path);
814 ret = WRITE_STATUS_ITEM(b, SI_BASENAME, "%s\n", val? val : "");
815 if (ret < 0)
816 return ret;
817 val = para_dirname(path);
818 ret = WRITE_STATUS_ITEM(b, SI_DIRECTORY, "%s\n", val? val : "");
819 free(val);
820 return ret;
821 }
822
823 static int print_chunk_table(struct ls_data *d, struct para_buffer *b)
824 {
825 struct osl_object chunk_table_obj;
826 struct osl_row *aft_row;
827 int ret, i;
828 char *buf;
829
830 ret = aft_get_row_of_hash(d->hash, &aft_row);
831 if (ret < 0)
832 return ret;
833 ret = osl(osl_open_disk_object(audio_file_table, aft_row,
834 AFTCOL_CHUNKS, &chunk_table_obj));
835 if (ret < 0)
836 return ret;
837 ret = para_printf(b, "%s\n"
838 "chunk_time: %lu:%lu\nchunk_offsets: ",
839 d->path,
840 (long unsigned) d->afhi.chunk_tv.tv_sec,
841 (long unsigned) d->afhi.chunk_tv.tv_usec
842 );
843 if (ret < 0)
844 goto out;
845 buf = chunk_table_obj.data;
846 for (i = 0; i <= d->afhi.chunks_total; i++) {
847 ret = para_printf(b, "%u ", (unsigned) read_u32(buf + 4 * i));
848 if (ret < 0)
849 goto out;
850 }
851 ret = para_printf(b, "\n");
852 out:
853 osl_close_disk_object(&chunk_table_obj);
854 return ret;
855 }
856
857 static int write_score(struct para_buffer *b, struct ls_data *d,
858 struct ls_options *opts)
859 {
860 if (!(opts->flags & LS_FLAG_ADMISSIBLE_ONLY)) /* no score*/
861 return 0;
862 return WRITE_STATUS_ITEM(b, SI_SCORE, "%li\n", d->score);
863 }
864
865 static int print_list_item(struct ls_data *d, struct ls_options *opts,
866 struct para_buffer *b, time_t current_time)
867 {
868 int ret;
869 char att_buf[65];
870 char last_played_time[30];
871 char duration_buf[30]; /* nobody has an audio file long enough to overflow this */
872 struct afs_info *afsi = &d->afsi;
873 struct afh_info *afhi = &d->afhi;
874 char asc_hash[2 * HASH_SIZE + 1];
875
876 if (opts->mode == LS_MODE_SHORT) {
877 ret = para_printf(b, "%s\n", d->path);
878 goto out;
879 }
880 if (opts->mode == LS_MODE_CHUNKS) {
881 ret = print_chunk_table(d, b);
882 goto out;
883 }
884 get_attribute_bitmap(&afsi->attributes, att_buf);
885 if (opts->flags & LS_FLAG_UNIXDATE)
886 sprintf(last_played_time, "%llu",
887 (long long unsigned)afsi->last_played);
888 else {
889 ret = get_local_time(&afsi->last_played, last_played_time,
890 sizeof(last_played_time), current_time, opts->mode);
891 if (ret < 0)
892 goto out;
893 }
894 get_duration_buf(afhi->seconds_total, duration_buf, opts);
895 if (opts->mode == LS_MODE_LONG) {
896 struct ls_widths *w = &opts->widths;
897 if (opts->flags & LS_FLAG_ADMISSIBLE_ONLY) {
898 ret = para_printf(b, "%*li ",
899 opts->widths.score_width, d->score);
900 if (ret < 0)
901 goto out;
902 }
903 ret = para_printf(b,
904 "%s " /* attributes */
905 "%*u " /* amp */
906 "%*d " /* image_id */
907 "%*d " /* lyrics_id */
908 "%*d " /* bitrate */
909 "%*s " /* audio format */
910 "%*d " /* frequency */
911 "%d " /* channels */
912 "%s " /* duration */
913 "%*d " /* num_played */
914 "%s " /* last_played */
915 "%s\n", /* path */
916 att_buf,
917 w->amp_width, afsi->amp,
918 w->image_id_width, afsi->image_id,
919 w->lyrics_id_width, afsi->lyrics_id,
920 w->bitrate_width, afhi->bitrate,
921 w->audio_format_width,
922 audio_format_name(afsi->audio_format_id),
923 w->frequency_width, afhi->frequency,
924 afhi->channels,
925 duration_buf,
926 w->num_played_width, afsi->num_played,
927 last_played_time,
928 d->path
929 );
930 goto out;
931 }
932 if (opts->mode == LS_MODE_MBOX) {
933 const char *bn = para_basename(d->path);
934 ret = para_printf(b,
935 "From foo@localhost %s\n"
936 "Received: from\nTo: bar\nFrom: a\n"
937 "Subject: %s\n\n",
938 last_played_time,
939 bn? bn : "?");
940 if (ret < 0)
941 goto out;
942 }
943 ret = write_filename_items(b, d->path, opts->flags);
944 if (ret < 0)
945 goto out;
946 ret = write_score(b, d, opts);
947 if (ret < 0)
948 goto out;
949 ret = write_attribute_items(b, att_buf, afsi);
950 if (ret < 0)
951 goto out;
952 ret = write_image_items(b, afsi);
953 if (ret < 0)
954 goto out;
955 ret = write_lyrics_items(b, afsi);
956 if (ret < 0)
957 goto out;
958 hash_to_asc(d->hash, asc_hash);
959 ret = WRITE_STATUS_ITEM(b, SI_HASH, "%s\n", asc_hash);
960 if (ret < 0)
961 goto out;
962 ret = WRITE_STATUS_ITEM(b, SI_BITRATE, "%dkbit/s\n", afhi->bitrate);
963 if (ret < 0)
964 goto out;
965 ret = WRITE_STATUS_ITEM(b, SI_FORMAT, "%s\n",
966 audio_format_name(afsi->audio_format_id));
967 if (ret < 0)
968 goto out;
969 ret = WRITE_STATUS_ITEM(b, SI_FREQUENCY, "%dHz\n", afhi->frequency);
970 if (ret < 0)
971 goto out;
972 ret = WRITE_STATUS_ITEM(b, SI_CHANNELS, "%d\n", afhi->channels);
973 if (ret < 0)
974 goto out;
975 ret = WRITE_STATUS_ITEM(b, SI_DURATION, "%s\n", duration_buf);
976 if (ret < 0)
977 goto out;
978 ret = WRITE_STATUS_ITEM(b, SI_SECONDS_TOTAL, "%lu\n",
979 afhi->seconds_total);
980 if (ret < 0)
981 goto out;
982 ret = WRITE_STATUS_ITEM(b, SI_LAST_PLAYED, "%s\n", last_played_time);
983 if (ret < 0)
984 goto out;
985 ret = WRITE_STATUS_ITEM(b, SI_NUM_PLAYED, "%d\n", afsi->num_played);
986 if (ret < 0)
987 goto out;
988 ret = WRITE_STATUS_ITEM(b, SI_AMPLIFICATION, "%u\n", afsi->amp);
989 if (ret < 0)
990 goto out;
991 ret = WRITE_STATUS_ITEM(b, SI_CHUNK_TIME, "%lu\n",
992 tv2ms(&afhi->chunk_tv));
993 if (ret < 0)
994 goto out;
995 ret = WRITE_STATUS_ITEM(b, SI_NUM_CHUNKS, "%lu\n",
996 afhi->chunks_total);
997 if (ret < 0)
998 goto out;
999 ret = WRITE_STATUS_ITEM(b, SI_TECHINFO, "%s\n", afhi->techinfo);
1000 if (ret < 0)
1001 goto out;
1002 ret = WRITE_STATUS_ITEM(b, SI_ARTIST, "%s\n", afhi->tags.artist);
1003 if (ret < 0)
1004 goto out;
1005 ret = WRITE_STATUS_ITEM(b, SI_TITLE, "%s\n", afhi->tags.title);
1006 if (ret < 0)
1007 goto out;
1008 ret = WRITE_STATUS_ITEM(b, SI_YEAR, "%s\n", afhi->tags.year);
1009 if (ret < 0)
1010 goto out;
1011 ret = WRITE_STATUS_ITEM(b, SI_ALBUM, "%s\n", afhi->tags.album);
1012 if (ret < 0)
1013 goto out;
1014 ret = WRITE_STATUS_ITEM(b, SI_COMMENT, "%s\n", afhi->tags.comment);
1015 if (ret < 0)
1016 goto out;
1017 if (opts->mode == LS_MODE_MBOX) {
1018 struct osl_object lyrics_def;
1019 lyr_get_def_by_id(afsi->lyrics_id, &lyrics_def);
1020 if (lyrics_def.data) {
1021 ret = para_printf(b, "Lyrics:\n~~~~~~~\n%s",
1022 (char *)lyrics_def.data);
1023 osl_close_disk_object(&lyrics_def);
1024 }
1025 }
1026 out:
1027 return ret;
1028 }
1029
1030 static int make_status_items(struct audio_file_data *afd,
1031 struct afs_info *afsi, char *path, long score,
1032 unsigned char *hash)
1033 {
1034 struct ls_data d = {
1035 .afhi = afd->afhi,
1036 .afsi = *afsi,
1037 .path = path,
1038 .score = score,
1039 .hash = hash
1040 };
1041 struct ls_options opts = {
1042 .flags = LS_FLAG_FULL_PATH | LS_FLAG_ADMISSIBLE_ONLY,
1043 .mode = LS_MODE_VERBOSE,
1044 };
1045 struct para_buffer pb = {.max_size = shm_get_shmmax() - 1};
1046 time_t current_time;
1047 int ret;
1048
1049 time(&current_time);
1050 ret = print_list_item(&d, &opts, &pb, current_time);
1051 if (ret < 0)
1052 return ret;
1053 free(status_items);
1054 status_items = pb.buf;
1055 memset(&pb, 0, sizeof(pb));
1056 pb.max_size = shm_get_shmmax() - 1;
1057 pb.flags = PBF_SIZE_PREFIX;
1058 ret = print_list_item(&d, &opts, &pb, current_time);
1059 if (ret < 0) {
1060 free(status_items);
1061 status_items = NULL;
1062 return ret;
1063 }
1064 free(parser_friendly_status_items);
1065 parser_friendly_status_items = pb.buf;
1066 return 1;
1067 }
1068
1069 /**
1070 * Mmap the given audio file and update statistics.
1071 *
1072 * \param aft_row Determines the audio file to be opened and updated.
1073 * \param score The score of the audio file.
1074 * \param afd Result pointer.
1075 *
1076 * On success, the numplayed field of the audio file selector info is increased
1077 * and the lastplayed time is set to the current time. Finally, the score of
1078 * the audio file is updated.
1079 *
1080 * \return Positive shmid on success, negative on errors.
1081 */
1082 int open_and_update_audio_file(struct osl_row *aft_row, long score,
1083 struct audio_file_data *afd)
1084 {
1085 unsigned char *aft_hash, file_hash[HASH_SIZE];
1086 struct osl_object afsi_obj;
1087 struct afs_info old_afsi, new_afsi;
1088 int ret = get_hash_of_row(aft_row, &aft_hash);
1089 struct afsi_change_event_data aced;
1090 struct osl_object map, chunk_table_obj;
1091 char *path;
1092
1093 if (ret < 0)
1094 return ret;
1095 ret = get_audio_file_path_of_row(aft_row, &path);
1096 if (ret < 0)
1097 return ret;
1098 PARA_NOTICE_LOG("%s\n", path);
1099 ret = get_afsi_object_of_row(aft_row, &afsi_obj);
1100 if (ret < 0)
1101 return ret;
1102 ret = load_afsi(&old_afsi, &afsi_obj);
1103 if (ret < 0)
1104 return ret;
1105 ret = get_afhi_of_row(aft_row, &afd->afhi);
1106 if (ret < 0)
1107 return ret;
1108 afd->afhi.chunk_table = NULL;
1109 ret = osl(osl_open_disk_object(audio_file_table, aft_row,
1110 AFTCOL_CHUNKS, &chunk_table_obj));
1111 if (ret < 0)
1112 return ret;
1113 ret = mmap_full_file(path, O_RDONLY, &map.data,
1114 &map.size, &afd->fd);
1115 if (ret < 0)
1116 goto err;
1117 hash_function(map.data, map.size, file_hash);
1118 ret = hash_compare(file_hash, aft_hash);
1119 para_munmap(map.data, map.size);
1120 if (ret) {
1121 ret = -E_HASH_MISMATCH;
1122 goto err;
1123 }
1124 new_afsi = old_afsi;
1125 new_afsi.num_played++;
1126 new_afsi.last_played = time(NULL);
1127 save_afsi(&new_afsi, &afsi_obj); /* in-place update */
1128
1129 afd->audio_format_id = old_afsi.audio_format_id;
1130 load_chunk_table(&afd->afhi, chunk_table_obj.data);
1131 ret = make_status_items(afd, &old_afsi, path, score, file_hash);
1132 if (ret < 0)
1133 goto err;
1134 aced.aft_row = aft_row;
1135 aced.old_afsi = &old_afsi;
1136 afs_event(AFSI_CHANGE, NULL, &aced);
1137 ret = save_afd(afd);
1138 err:
1139 free(afd->afhi.chunk_table);
1140 osl_close_disk_object(&chunk_table_obj);
1141 if (ret < 0)
1142 PARA_ERROR_LOG("%s: %s\n", path, para_strerror(-ret));
1143 return ret;
1144 }
1145
1146 static int ls_audio_format_compare(const void *a, const void *b)
1147 {
1148 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1149 return NUM_COMPARE(d1->afsi.audio_format_id, d2->afsi.audio_format_id);
1150 }
1151
1152 static int ls_duration_compare(const void *a, const void *b)
1153 {
1154 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1155 return NUM_COMPARE(d1->afhi.seconds_total, d2->afhi.seconds_total);
1156 }
1157
1158 static int ls_bitrate_compare(const void *a, const void *b)
1159 {
1160 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1161 return NUM_COMPARE(d1->afhi.bitrate, d2->afhi.bitrate);
1162 }
1163
1164 static int ls_lyrics_id_compare(const void *a, const void *b)
1165 {
1166 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1167 return NUM_COMPARE(d1->afsi.lyrics_id, d2->afsi.lyrics_id);
1168 }
1169
1170 static int ls_image_id_compare(const void *a, const void *b)
1171 {
1172 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1173 return NUM_COMPARE(d1->afsi.image_id, d2->afsi.image_id);
1174 }
1175
1176 static int ls_channels_compare(const void *a, const void *b)
1177 {
1178 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1179 return NUM_COMPARE(d1->afhi.channels, d2->afhi.channels);
1180 }
1181
1182 static int ls_frequency_compare(const void *a, const void *b)
1183 {
1184 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1185 return NUM_COMPARE(d1->afhi.frequency, d2->afhi.frequency);
1186 }
1187
1188 static int ls_num_played_compare(const void *a, const void *b)
1189 {
1190 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1191 return NUM_COMPARE(d1->afsi.num_played, d2->afsi.num_played);
1192 }
1193
1194 static int ls_last_played_compare(const void *a, const void *b)
1195 {
1196 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1197 return NUM_COMPARE(d1->afsi.last_played, d2->afsi.last_played);
1198 }
1199
1200 static int ls_score_compare(const void *a, const void *b)
1201 {
1202 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1203 return NUM_COMPARE(d1->score, d2->score);
1204 }
1205
1206 static int ls_path_compare(const void *a, const void *b)
1207 {
1208 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1209 return strcmp(d1->path, d2->path);
1210 }
1211
1212 static int sort_matching_paths(struct ls_options *options)
1213 {
1214 size_t nmemb = options->num_matching_paths;
1215 size_t size = sizeof(*options->data_ptr);
1216 int (*compar)(const void *, const void *);
1217 int i;
1218
1219 options->data_ptr = para_malloc(nmemb * sizeof(*options->data_ptr));
1220 for (i = 0; i < nmemb; i++)
1221 options->data_ptr[i] = options->data + i;
1222
1223 /* In these cases the array is already sorted */
1224 if (options->sorting == LS_SORT_BY_PATH
1225 && !(options->flags & LS_FLAG_ADMISSIBLE_ONLY)
1226 && (options->flags & LS_FLAG_FULL_PATH))
1227 return 1;
1228 if (options->sorting == LS_SORT_BY_SCORE &&
1229 options->flags & LS_FLAG_ADMISSIBLE_ONLY)
1230 return 1;
1231
1232 switch (options->sorting) {
1233 case LS_SORT_BY_PATH:
1234 compar = ls_path_compare; break;
1235 case LS_SORT_BY_SCORE:
1236 compar = ls_score_compare; break;
1237 case LS_SORT_BY_LAST_PLAYED:
1238 compar = ls_last_played_compare; break;
1239 case LS_SORT_BY_NUM_PLAYED:
1240 compar = ls_num_played_compare; break;
1241 case LS_SORT_BY_FREQUENCY:
1242 compar = ls_frequency_compare; break;
1243 case LS_SORT_BY_CHANNELS:
1244 compar = ls_channels_compare; break;
1245 case LS_SORT_BY_IMAGE_ID:
1246 compar = ls_image_id_compare; break;
1247 case LS_SORT_BY_LYRICS_ID:
1248 compar = ls_lyrics_id_compare; break;
1249 case LS_SORT_BY_BITRATE:
1250 compar = ls_bitrate_compare; break;
1251 case LS_SORT_BY_DURATION:
1252 compar = ls_duration_compare; break;
1253 case LS_SORT_BY_AUDIO_FORMAT:
1254 compar = ls_audio_format_compare; break;
1255 default:
1256 return -E_BAD_SORT;
1257 }
1258 qsort(options->data_ptr, nmemb, size, compar);
1259 return 1;
1260 }
1261
1262 /* row is either an aft_row or a row of the score table */
1263 /* TODO: Only compute widths if we need them */
1264 static int prepare_ls_row(struct osl_row *row, void *ls_opts)
1265 {
1266 int ret, i;
1267 struct ls_options *options = ls_opts;
1268 struct ls_data *d;
1269 struct ls_widths *w;
1270 unsigned short num_digits;
1271 unsigned tmp;
1272 struct osl_row *aft_row;
1273 long score;
1274 char *path;
1275
1276 if (options->flags & LS_FLAG_ADMISSIBLE_ONLY) {
1277 ret = get_score_and_aft_row(row, &score, &aft_row);
1278 if (ret < 0)
1279 return ret;
1280 } else {
1281 aft_row = row;
1282 score = 0;
1283 }
1284 ret = get_audio_file_path_of_row(aft_row, &path);
1285 if (ret < 0)
1286 return ret;
1287 if (!(options->flags & LS_FLAG_FULL_PATH)) {
1288 char *p = strrchr(path, '/');
1289 if (p)
1290 path = p + 1;
1291 }
1292 if (options->num_patterns) {
1293 for (i = 0; i < options->num_patterns; i++) {
1294 ret = fnmatch(options->patterns[i], path, 0);
1295 if (!ret)
1296 break;
1297 if (ret == FNM_NOMATCH)
1298 continue;
1299 return -E_FNMATCH;
1300 }
1301 if (i >= options->num_patterns) /* no match */
1302 return 1;
1303 }
1304 tmp = options->num_matching_paths++;
1305 if (options->num_matching_paths > options->array_size) {
1306 options->array_size++;
1307 options->array_size *= 2;
1308 options->data = para_realloc(options->data, options->array_size
1309 * sizeof(*options->data));
1310 }
1311 d = options->data + tmp;
1312 ret = get_afsi_of_row(aft_row, &d->afsi);
1313 if (ret < 0)
1314 return ret;
1315 ret = get_afhi_of_row(aft_row, &d->afhi);
1316 if (ret < 0)
1317 return ret;
1318 d->path = path;
1319 ret = get_hash_of_row(aft_row, &d->hash);
1320 if (ret < 0)
1321 goto err;
1322 w = &options->widths;
1323 GET_NUM_DIGITS(d->afsi.image_id, &num_digits);
1324 w->image_id_width = PARA_MAX(w->image_id_width, num_digits);
1325 GET_NUM_DIGITS(d->afsi.lyrics_id, &num_digits);
1326 w->lyrics_id_width = PARA_MAX(w->lyrics_id_width, num_digits);
1327 GET_NUM_DIGITS(d->afhi.bitrate, &num_digits);
1328 w->bitrate_width = PARA_MAX(w->bitrate_width, num_digits);
1329 GET_NUM_DIGITS(d->afhi.frequency, &num_digits);
1330 w->frequency_width = PARA_MAX(w->frequency_width, num_digits);
1331 GET_NUM_DIGITS(d->afsi.num_played, &num_digits);
1332 w->num_played_width = PARA_MAX(w->num_played_width, num_digits);
1333 /* get the number of chars to print this amount of time */
1334 num_digits = get_duration_width(d->afhi.seconds_total);
1335 w->duration_width = PARA_MAX(w->duration_width, num_digits);
1336 GET_NUM_DIGITS(d->afsi.amp, &num_digits);
1337 w->amp_width = PARA_MAX(w->amp_width, num_digits);
1338 num_digits = strlen(audio_format_name(d->afsi.audio_format_id));
1339 w->audio_format_width = PARA_MAX(w->audio_format_width, num_digits);
1340 if (options->flags & LS_FLAG_ADMISSIBLE_ONLY) {
1341 GET_NUM_DIGITS(score, &num_digits);
1342 num_digits++; /* add one for the sign (space or "-") */
1343 w->score_width = PARA_MAX(w->score_width, num_digits);
1344 d->score = score;
1345 }
1346 return 1;
1347 err:
1348 return ret;
1349 }
1350
1351 static void com_ls_callback(int fd, const struct osl_object *query)
1352 {
1353 struct ls_options *opts = query->data;
1354 char *p, *pattern_start = (char *)query->data + sizeof(*opts);
1355 struct para_buffer b = {
1356 .max_size = shm_get_shmmax(),
1357 .flags = (opts->mode == LS_MODE_PARSER)? PBF_SIZE_PREFIX : 0,
1358 .max_size_handler = afs_max_size_handler,
1359 .private_data = &(struct afs_max_size_handler_data) {
1360 .fd = fd,
1361 .band = SBD_OUTPUT
1362 }
1363 };
1364 int i = 0, ret;
1365 time_t current_time;
1366
1367 if (opts->num_patterns) {
1368 opts->patterns = para_malloc(opts->num_patterns * sizeof(char *));
1369 for (i = 0, p = pattern_start; i < opts->num_patterns; i++) {
1370 opts->patterns[i] = p;
1371 p += strlen(p) + 1;
1372 }
1373 } else
1374 opts->patterns = NULL;
1375 if (opts->flags & LS_FLAG_ADMISSIBLE_ONLY)
1376 ret = admissible_file_loop(opts, prepare_ls_row);
1377 else
1378 ret = osl(osl_rbtree_loop(audio_file_table, AFTCOL_PATH, opts,
1379 prepare_ls_row));
1380 if (ret < 0)
1381 goto out;
1382 if (opts->num_matching_paths == 0) {
1383 if (opts->num_patterns > 0)
1384 para_printf(&b, "no matches\n");
1385 goto out;
1386 }
1387 ret = sort_matching_paths(opts);
1388 if (ret < 0)
1389 goto out;
1390 time(&current_time);
1391 if (opts->flags & LS_FLAG_REVERSE)
1392 for (i = opts->num_matching_paths - 1; i >= 0; i--) {
1393 ret = print_list_item(opts->data_ptr[i], opts, &b, current_time);
1394 if (ret < 0)
1395 goto out;
1396 }
1397 else
1398 for (i = 0; i < opts->num_matching_paths; i++) {
1399 ret = print_list_item(opts->data_ptr[i], opts, &b, current_time);
1400 if (ret < 0)
1401 goto out;
1402 }
1403 out:
1404 if (b.offset)
1405 pass_buffer_as_shm(fd, SBD_OUTPUT, b.buf, b.offset);
1406 free(b.buf);
1407 free(opts->data);
1408 free(opts->data_ptr);
1409 free(opts->patterns);
1410 }
1411
1412 /*
1413 * TODO: flags -h (sort by hash)
1414 */
1415 int com_ls(struct command_context *cc)
1416 {
1417 int i, ret;
1418 unsigned flags = 0;
1419 enum ls_sorting_method sort = LS_SORT_BY_PATH;
1420 enum ls_listing_mode mode = LS_MODE_SHORT;
1421 struct ls_options opts = {.patterns = NULL};
1422 struct osl_object query = {.data = &opts, .size = sizeof(opts)};
1423
1424 for (i = 1; i < cc->argc; i++) {
1425 const char *arg = cc->argv[i];
1426 if (arg[0] != '-')
1427 break;
1428 if (!strcmp(arg, "--")) {
1429 i++;
1430 break;
1431 }
1432 if (!strncmp(arg, "-l", 2)) {
1433 if (!*(arg + 2)) {
1434 mode = LS_MODE_LONG;
1435 continue;
1436 }
1437 if (*(arg + 3))
1438 return -E_AFT_SYNTAX;
1439 switch(*(arg + 2)) {
1440 case 's':
1441 mode = LS_MODE_SHORT;
1442 continue;
1443 case 'l':
1444 mode = LS_MODE_LONG;
1445 continue;
1446 case 'v':
1447 mode = LS_MODE_VERBOSE;
1448 continue;
1449 case 'm':
1450 mode = LS_MODE_MBOX;
1451 continue;
1452 case 'c':
1453 mode = LS_MODE_CHUNKS;
1454 continue;
1455 case 'p':
1456 mode = LS_MODE_PARSER;
1457 continue;
1458 default:
1459 return -E_AFT_SYNTAX;
1460 }
1461 }
1462 if (!strcmp(arg, "-p")) {
1463 flags |= LS_FLAG_FULL_PATH;
1464 continue;
1465 }
1466 if (!strcmp(arg, "-a")) {
1467 flags |= LS_FLAG_ADMISSIBLE_ONLY;
1468 continue;
1469 }
1470 if (!strcmp(arg, "-r")) {
1471 flags |= LS_FLAG_REVERSE;
1472 continue;
1473 }
1474 if (!strcmp(arg, "-d")) {
1475 flags |= LS_FLAG_UNIXDATE;
1476 continue;
1477 }
1478 if (!strncmp(arg, "-s", 2)) {
1479 if (!*(arg + 2) || *(arg + 3))
1480 return -E_AFT_SYNTAX;
1481 switch(*(arg + 2)) {
1482 case 'p':
1483 sort = LS_SORT_BY_PATH;
1484 continue;
1485 case 's': /* -ss implies -a */
1486 sort = LS_SORT_BY_SCORE;
1487 flags |= LS_FLAG_ADMISSIBLE_ONLY;
1488 continue;
1489 case 'l':
1490 sort = LS_SORT_BY_LAST_PLAYED;
1491 continue;
1492 case 'n':
1493 sort = LS_SORT_BY_NUM_PLAYED;
1494 continue;
1495 case 'f':
1496 sort = LS_SORT_BY_FREQUENCY;
1497 continue;
1498 case 'c':
1499 sort = LS_SORT_BY_CHANNELS;
1500 continue;
1501 case 'i':
1502 sort = LS_SORT_BY_IMAGE_ID;
1503 continue;
1504 case 'y':
1505 sort = LS_SORT_BY_LYRICS_ID;
1506 continue;
1507 case 'b':
1508 sort = LS_SORT_BY_BITRATE;
1509 continue;
1510 case 'd':
1511 sort = LS_SORT_BY_DURATION;
1512 continue;
1513 case 'a':
1514 sort = LS_SORT_BY_AUDIO_FORMAT;
1515 continue;
1516 default:
1517 return -E_AFT_SYNTAX;
1518 }
1519 }
1520 return -E_AFT_SYNTAX;
1521 }
1522 opts.flags = flags;
1523 opts.sorting = sort;
1524 opts.mode = mode;
1525 opts.num_patterns = cc->argc - i;
1526 ret = send_option_arg_callback_request(&query, opts.num_patterns,
1527 cc->argv + i, com_ls_callback, afs_cb_result_handler, cc);
1528 return ret;
1529 }
1530
1531 /**
1532 * Call the given function for each file in the audio file table.
1533 *
1534 * \param private_data An arbitrary data pointer, passed to \a func.
1535 * \param func The custom function to be called.
1536 *
1537 * \return Standard.
1538 */
1539 int audio_file_loop(void *private_data, osl_rbtree_loop_func *func)
1540 {
1541 return osl(osl_rbtree_loop(audio_file_table, AFTCOL_HASH, private_data,
1542 func));
1543 }
1544
1545 static struct osl_row *find_hash_sister(unsigned char *hash)
1546 {
1547 const struct osl_object obj = {.data = hash, .size = HASH_SIZE};
1548 struct osl_row *row;
1549
1550 osl_get_row(audio_file_table, AFTCOL_HASH, &obj, &row);
1551 return row;
1552 }
1553
1554 /** The format of the data stored by save_audio_file_data(). */
1555 enum com_add_buffer_offsets {
1556 /** afhi (if present) starts here. */
1557 CAB_AFHI_OFFSET_POS = 0,
1558 /** Start of the chunk table (if present). */
1559 CAB_CHUNKS_OFFSET_POS = 2,
1560 /** Audio format id. */
1561 CAB_AUDIO_FORMAT_OFFSET = 4,
1562 /** Flags given to the add command. */
1563 CAB_FLAGS_OFFSET = 5,
1564 /** The hash of the audio file being added. */
1565 CAB_HASH_OFFSET = 9,
1566 /** Start of the path of the audio file. */
1567 CAB_PATH_OFFSET = (CAB_HASH_OFFSET + HASH_SIZE),
1568 };
1569
1570 /*
1571 * Store the given data to a single buffer. Doesn't need the audio file selector
1572 * info struct as the server knows it as well.
1573 *
1574 * It's OK to call this with afhi == NULL. In this case, the audio format
1575 * handler info won't be stored in the buffer.
1576 */
1577 static void save_add_callback_buffer(unsigned char *hash, const char *path,
1578 struct afh_info *afhi, uint32_t flags,
1579 uint8_t audio_format_num, struct osl_object *obj)
1580 {
1581 size_t path_len = strlen(path) + 1;
1582 size_t afhi_size = sizeof_afhi_buf(afhi);
1583 size_t size = CAB_PATH_OFFSET + path_len + afhi_size
1584 + sizeof_chunk_table(afhi);
1585 char *buf = para_malloc(size);
1586 uint16_t pos;
1587
1588 write_u8(buf + CAB_AUDIO_FORMAT_OFFSET, audio_format_num);
1589 write_u32(buf + CAB_FLAGS_OFFSET, flags);
1590
1591 memcpy(buf + CAB_HASH_OFFSET, hash, HASH_SIZE);
1592 strcpy(buf + CAB_PATH_OFFSET, path);
1593
1594 pos = CAB_PATH_OFFSET + path_len;
1595 PARA_DEBUG_LOG("size: %zu, afhi starts at %d\n", size, pos);
1596 PARA_DEBUG_LOG("last afhi byte: %p, pos %zu\n", buf + pos + afhi_size - 1,
1597 pos + afhi_size - 1);
1598 write_u16(buf + CAB_AFHI_OFFSET_POS, pos);
1599 save_afhi(afhi, buf + pos);
1600
1601 pos += afhi_size;
1602 PARA_DEBUG_LOG("size: %zu, chunks start at %d\n", size, pos);
1603 write_u16(buf + CAB_CHUNKS_OFFSET_POS, pos);
1604 if (afhi)
1605 save_chunk_table(afhi, buf + pos);
1606 PARA_DEBUG_LOG("last byte in buf: %p\n", buf + size - 1);
1607 obj->data = buf;
1608 obj->size = size;
1609 }
1610
1611 /*
1612
1613 Overview of the add command.
1614
1615 Input: What was passed to the callback by the command handler.
1616 ~~~~~~
1617 HS: Hash sister. Whether an audio file with identical hash
1618 already exists in the osl database.
1619
1620 PB: Path brother. Whether a file with the given path exists
1621 in the table.
1622
1623 F: Force flag given. Whether add was called with -f.
1624
1625 output: Action performed by the callback.
1626 ~~~~~~~
1627 AFHI: Whether afhi and chunk table are computed and sent.
1628 ACTION: Table modifications to be done by the callback.
1629
1630 +----+----+---+------+---------------------------------------------------+
1631 | HS | PB | F | AFHI | ACTION
1632 +----+----+---+------+---------------------------------------------------+
1633 | Y | Y | Y | Y | if HS != PB: remove PB. HS: force afhi update,
1634 | | update path, keep afsi
1635 +----+----+---+------+---------------------------------------------------+
1636 | Y | Y | N | N | if HS == PB: do not send callback request at all.
1637 | | otherwise: remove PB, HS: update path, keep afhi,
1638 | | afsi.
1639 +----+----+---+------+---------------------------------------------------+
1640 | Y | N | Y | Y | (rename) force afhi update of HS, update path of
1641 | | HS, keep afsi
1642 +----+----+---+------+---------------------------------------------------+
1643 | Y | N | N | N | (file rename) update path of HS, keep afsi, afhi
1644 +----+----+---+------+---------------------------------------------------+
1645 | N | Y | Y | Y | (file change) update afhi, hash, of PB, keep afsi
1646 | | (force has no effect)
1647 +----+----+---+------+---------------------------------------------------+
1648 | N | Y | N | Y | (file change) update afhi, hash of PB, keep afsi
1649 +----+----+---+------+---------------------------------------------------+
1650 | N | N | Y | Y | (new file) create new entry (force has no effect)
1651 +----+----+---+------+---------------------------------------------------+
1652 | N | N | N | Y | (new file) create new entry
1653 +----+----+---+------+---------------------------------------------------+
1654
1655 Notes:
1656
1657 afhi <=> force or no HS
1658 F => AFHI
1659
1660 */
1661
1662 /** Flags passed to the add command. */
1663 enum com_add_flags {
1664 /** Skip paths that exist already. */
1665 ADD_FLAG_LAZY = 1,
1666 /** Force adding. */
1667 ADD_FLAG_FORCE = 2,
1668 /** Print what is being done. */
1669 ADD_FLAG_VERBOSE = 4,
1670 /** Try to add files with unknown suffixes. */
1671 ADD_FLAG_ALL = 8,
1672 };
1673
1674 static void com_add_callback(int fd, const struct osl_object *query)
1675 {
1676 char *buf = query->data, *path;
1677 struct osl_row *pb, *aft_row;
1678 struct osl_row *hs;
1679 struct osl_object objs[NUM_AFT_COLUMNS];
1680 unsigned char *hash;
1681 char asc[2 * HASH_SIZE + 1];
1682 int ret;
1683 char afsi_buf[AFSI_SIZE];
1684 uint32_t flags = read_u32(buf + CAB_FLAGS_OFFSET);
1685 struct afs_info default_afsi = {.last_played = 0};
1686 struct para_buffer msg = {
1687 .max_size = shm_get_shmmax(),
1688 .max_size_handler = afs_max_size_handler,
1689 .private_data = &(struct afs_max_size_handler_data) {
1690 .fd = fd,
1691 .band = SBD_OUTPUT
1692 }
1693 };
1694 uint16_t afhi_offset, chunks_offset;
1695
1696 hash = (unsigned char *)buf + CAB_HASH_OFFSET;
1697 hash_to_asc(hash, asc);
1698 objs[AFTCOL_HASH].data = buf + CAB_HASH_OFFSET;
1699 objs[AFTCOL_HASH].size = HASH_SIZE;
1700
1701 path = buf + CAB_PATH_OFFSET;
1702 objs[AFTCOL_PATH].data = path;
1703 objs[AFTCOL_PATH].size = strlen(path) + 1;
1704
1705 PARA_INFO_LOG("request to add %s\n", path);
1706 hs = find_hash_sister(hash);
1707 ret = aft_get_row_of_path(path, &pb);
1708 if (ret < 0 && ret != -OSL_ERRNO_TO_PARA_ERROR(E_OSL_RB_KEY_NOT_FOUND))
1709 goto out;
1710 if (hs && pb && hs == pb && !(flags & ADD_FLAG_FORCE)) {
1711 if (flags & ADD_FLAG_VERBOSE)
1712 ret = para_printf(&msg, "ignoring duplicate\n");
1713 else
1714 ret = 1;
1715 goto out;
1716 }
1717 if (hs && hs != pb) {
1718 struct osl_object obj;
1719 if (pb) { /* hs trumps pb, remove pb */
1720 if (flags & ADD_FLAG_VERBOSE) {
1721 ret = para_printf(&msg, "removing path brother\n");
1722 if (ret < 0)
1723 goto out;
1724 }
1725 ret = osl(osl_del_row(audio_file_table, pb));
1726 if (ret < 0)
1727 goto out;
1728 pb = NULL;
1729 }
1730 /* file rename, update hs' path */
1731 if (flags & ADD_FLAG_VERBOSE) {
1732 ret = osl(osl_get_object(audio_file_table, hs,
1733 AFTCOL_PATH, &obj));
1734 if (ret < 0)
1735 goto out;
1736 ret = para_printf(&msg, "renamed from %s\n", (char *)obj.data);
1737 if (ret < 0)
1738 goto out;
1739 }
1740 ret = osl(osl_update_object(audio_file_table, hs, AFTCOL_PATH,
1741 &objs[AFTCOL_PATH]));
1742 if (ret < 0)
1743 goto out;
1744 afs_event(AUDIO_FILE_RENAME, &msg, hs);
1745 if (!(flags & ADD_FLAG_FORCE))
1746 goto out;
1747 }
1748 /* no hs or force mode, child must have sent afhi */
1749 afhi_offset = read_u16(buf + CAB_AFHI_OFFSET_POS);
1750 chunks_offset = read_u16(buf + CAB_CHUNKS_OFFSET_POS);
1751
1752 objs[AFTCOL_AFHI].data = buf + afhi_offset;
1753 objs[AFTCOL_AFHI].size = chunks_offset - afhi_offset;
1754 ret = -E_NO_AFHI;
1755 if (!objs[AFTCOL_AFHI].size) /* "impossible" */
1756 goto out;
1757 objs[AFTCOL_CHUNKS].data = buf + chunks_offset;
1758 objs[AFTCOL_CHUNKS].size = query->size - chunks_offset;
1759 if (pb && !hs) { /* update pb's hash */
1760 char old_asc[2 * HASH_SIZE + 1];
1761 unsigned char *old_hash;
1762 ret = get_hash_of_row(pb, &old_hash);
1763 if (ret < 0)
1764 goto out;
1765 hash_to_asc(old_hash, old_asc);
1766 if (flags & ADD_FLAG_VERBOSE) {
1767 ret = para_printf(&msg, "file change: %s -> %s\n",
1768 old_asc, asc);
1769 if (ret < 0)
1770 goto out;
1771 }
1772 ret = osl_update_object(audio_file_table, pb, AFTCOL_HASH,
1773 &objs[AFTCOL_HASH]);
1774 if (ret < 0)
1775 goto out;
1776 }
1777 if (hs || pb) { /* (hs != NULL and pb != NULL) implies hs == pb */
1778 struct osl_row *row = pb? pb : hs;
1779 /* update afhi and chunk_table */
1780 if (flags & ADD_FLAG_VERBOSE) {
1781 ret = para_printf(&msg, "updating afhi and chunk table\n");
1782 if (ret < 0)
1783 goto out;
1784 }
1785 ret = osl(osl_update_object(audio_file_table, row, AFTCOL_AFHI,
1786 &objs[AFTCOL_AFHI]));
1787 if (ret < 0)
1788 goto out;
1789 ret = osl(osl_update_object(audio_file_table, row, AFTCOL_CHUNKS,
1790 &objs[AFTCOL_CHUNKS]));
1791 if (ret < 0)
1792 goto out;
1793 afs_event(AFHI_CHANGE, &msg, row);
1794 goto out;
1795 }
1796 /* new entry, use default afsi */
1797 if (flags & ADD_FLAG_VERBOSE) {
1798 ret = para_printf(&msg, "new file\n");
1799 if (ret < 0)
1800 goto out;
1801 }
1802 default_afsi.last_played = time(NULL) - 365 * 24 * 60 * 60;
1803 default_afsi.audio_format_id = read_u8(buf + CAB_AUDIO_FORMAT_OFFSET);
1804
1805 objs[AFTCOL_AFSI].data = &afsi_buf;
1806 objs[AFTCOL_AFSI].size = AFSI_SIZE;
1807 save_afsi(&default_afsi, &objs[AFTCOL_AFSI]);
1808 ret = osl(osl_add_and_get_row(audio_file_table, objs, &aft_row));
1809 afs_event(AUDIO_FILE_ADD, &msg, aft_row);
1810 out:
1811 if (ret < 0)
1812 para_printf(&msg, "%s\n", para_strerror(-ret));
1813 if (msg.offset)
1814 pass_buffer_as_shm(fd, SBD_OUTPUT, msg.buf, msg.offset);
1815 free(msg.buf);
1816 }
1817
1818 /** Used by com_add(). */
1819 struct private_add_data {
1820 /** The pointer passed to the original command handler. */
1821 struct command_context *cc;
1822 /** The given add flags. */
1823 uint32_t flags;
1824 };
1825
1826 static void path_brother_callback(int fd, const struct osl_object *query)
1827 {
1828 char *path = query->data;
1829 struct osl_row *path_brother;
1830 int ret = aft_get_row_of_path(path, &path_brother);
1831 if (ret < 0)
1832 return;
1833 pass_buffer_as_shm(fd, SBD_OUTPUT, (char *)&path_brother,
1834 sizeof(path_brother));
1835 }
1836
1837 static void hash_sister_callback(int fd, const struct osl_object *query)
1838 {
1839 unsigned char *hash = query->data;
1840 struct osl_row *hash_sister;
1841
1842 hash_sister = find_hash_sister(hash);
1843 if (!hash_sister)
1844 return;
1845 pass_buffer_as_shm(fd, SBD_OUTPUT, (char *)&hash_sister,
1846 sizeof(hash_sister));
1847 }
1848
1849 static int get_row_pointer_from_result(struct osl_object *result,
1850 __a_unused uint8_t band, void *private)
1851 {
1852 struct osl_row **row = private;
1853 *row = *(struct osl_row **)(result->data);
1854 return 1;
1855 }
1856
1857 static int add_one_audio_file(const char *path, void *private_data)
1858 {
1859 int ret, send_ret = 1, fd;
1860 uint8_t format_num = -1;
1861 struct private_add_data *pad = private_data;
1862 struct afh_info afhi, *afhi_ptr = NULL;
1863 struct osl_row *pb = NULL, *hs = NULL; /* path brother/hash sister */
1864 struct osl_object map, obj = {.data = NULL}, query;
1865 unsigned char hash[HASH_SIZE];
1866
1867 ret = guess_audio_format(path);
1868 if (ret < 0 && !(pad->flags & ADD_FLAG_ALL))
1869 goto out_free;
1870 query.data = (char *)path;
1871 query.size = strlen(path) + 1;
1872 ret = send_callback_request(path_brother_callback, &query,
1873 get_row_pointer_from_result, &pb);
1874 if (ret < 0 && ret != -OSL_ERRNO_TO_PARA_ERROR(E_OSL_RB_KEY_NOT_FOUND))
1875 goto out_free;
1876 ret = 1;
1877 if (pb && (pad->flags & ADD_FLAG_LAZY)) { /* lazy is really cheap */
1878 if (pad->flags & ADD_FLAG_VERBOSE)
1879 send_ret = pad->cc->use_sideband?
1880 send_sb_va(&pad->cc->scc, SBD_OUTPUT,
1881 "lazy-ignore: %s\n", path)
1882 :
1883 sc_send_va_buffer(&pad->cc->scc,
1884 "lazy-ignore: %s\n", path);
1885 goto out_free;
1886 }
1887 /* We still want to add this file. Compute its hash. */
1888 ret = mmap_full_file(path, O_RDONLY, &map.data, &map.size, &fd);
1889 if (ret < 0)
1890 goto out_free;
1891 hash_function(map.data, map.size, hash);
1892
1893 /* Check whether the database contains a file with the same hash. */
1894 query.data = hash;
1895 query.size = HASH_SIZE;
1896 ret = send_callback_request(hash_sister_callback, &query,
1897 get_row_pointer_from_result, &hs);
1898 if (ret < 0)
1899 goto out_unmap;
1900 /* Return success if we already know this file. */
1901 ret = 1;
1902 if (pb && hs && hs == pb && !(pad->flags & ADD_FLAG_FORCE)) {
1903 if (pad->flags & ADD_FLAG_VERBOSE)
1904 send_ret = pad->cc->use_sideband?
1905 send_sb_va(&pad->cc->scc, SBD_OUTPUT,
1906 "%s exists, not forcing update\n", path)
1907 :
1908 sc_send_va_buffer(&pad->cc->scc,
1909 "%s exists, not forcing update\n", path);
1910 goto out_unmap;
1911 }
1912 /*
1913 * We won't recalculate the audio format info and the chunk table if
1914 * there is a hash sister and FORCE was not given.
1915 */
1916 if (!hs || (pad->flags & ADD_FLAG_FORCE)) {
1917 ret = compute_afhi(path, map.data, map.size, fd, &afhi);
1918 if (ret < 0)
1919 goto out_unmap;
1920 format_num = ret;
1921 afhi_ptr = &afhi;
1922 }
1923 munmap(map.data, map.size);
1924 close(fd);
1925 if (pad->flags & ADD_FLAG_VERBOSE) {
1926 send_ret = pad->cc->use_sideband?
1927 send_sb_va(&pad->cc->scc, SBD_OUTPUT,
1928 "adding %s\n", path)
1929 :
1930 sc_send_va_buffer(&pad->cc->scc,
1931 "adding %s\n", path);
1932 if (send_ret < 0)
1933 goto out_free;
1934 }
1935 save_add_callback_buffer(hash, path, afhi_ptr, pad->flags, format_num, &obj);
1936 /* Ask afs to consider this entry for adding. */
1937 ret = send_callback_request(com_add_callback, &obj,
1938 afs_cb_result_handler, pad->cc);
1939 goto out_free;
1940
1941 out_unmap:
1942 close(fd);
1943 munmap(map.data, map.size);
1944 out_free:
1945 if (ret < 0 && send_ret >= 0)
1946 send_ret = pad->cc->use_sideband?
1947 send_sb_va(&pad->cc->scc, SBD_ERROR_LOG,
1948 "failed to add %s (%s)\n", path,
1949 para_strerror(-ret))
1950 :
1951 sc_send_va_buffer(&pad->cc->scc,
1952 "failed to add %s (%s)\n", path,
1953 para_strerror(-ret));
1954 free(obj.data);
1955 clear_afhi(afhi_ptr);
1956 /* Stop adding files only on send errors. */
1957 return send_ret;
1958 }
1959
1960 int com_add(struct command_context *cc)
1961 {
1962 int i, ret;
1963 struct private_add_data pad = {.cc = cc, .flags = 0};
1964 struct stat statbuf;
1965
1966 for (i = 1; i < cc->argc; i++) {
1967 const char *arg = cc->argv[i];
1968 if (arg[0] != '-')
1969 break;
1970 if (!strcmp(arg, "--")) {
1971 i++;
1972 break;
1973 }
1974 if (!strcmp(arg, "-a")) {
1975 pad.flags |= ADD_FLAG_ALL;
1976 continue;
1977 }
1978 if (!strcmp(arg, "-l")) {
1979 pad.flags |= ADD_FLAG_LAZY;
1980 continue;
1981 }
1982 if (!strcmp(arg, "-f")) {
1983 pad.flags |= ADD_FLAG_FORCE;
1984 continue;
1985 }
1986 if (!strcmp(arg, "-v")) {
1987 pad.flags |= ADD_FLAG_VERBOSE;
1988 continue;
1989 }
1990 }
1991 if (cc->argc <= i)
1992 return -E_AFT_SYNTAX;
1993 for (; i < cc->argc; i++) {
1994 char *path;
1995 ret = verify_path(cc->argv[i], &path);
1996 if (ret < 0) {
1997 ret = cc->use_sideband?
1998 send_sb_va(&cc->scc, SBD_ERROR_LOG, "%s: %s\n",
1999 cc->argv[i], para_strerror(-ret))
2000 :
2001 sc_send_va_buffer(&cc->scc, "%s: %s\n",
2002 cc->argv[i], para_strerror(-ret));
2003 if (ret < 0)
2004 return ret;
2005 continue;
2006 }
2007 ret = stat(path, &statbuf);
2008 if (ret < 0) {
2009 ret = cc->use_sideband?
2010 send_sb_va(&cc->scc, SBD_ERROR_LOG,
2011 "failed to stat %s (%s)\n", path,
2012 strerror(errno))
2013 :
2014 sc_send_va_buffer(&cc->scc,
2015 "failed to stat %s (%s)\n", path,
2016 strerror(errno));
2017 free(path);
2018 if (ret < 0)
2019 return ret;
2020 continue;
2021 }
2022 if (S_ISDIR(statbuf.st_mode))
2023 ret = for_each_file_in_dir(path, add_one_audio_file,
2024 &pad);
2025 else
2026 ret = add_one_audio_file(path, &pad);
2027 if (ret < 0) {
2028 if (cc->use_sideband)
2029 send_sb_va(&cc->scc, SBD_OUTPUT, "%s: %s\n", path,
2030 para_strerror(-ret));
2031 else
2032 sc_send_va_buffer(&cc->scc, "%s: %s\n", path,
2033 para_strerror(-ret));
2034 free(path);
2035 return ret;
2036 }
2037 free(path);
2038 }
2039 return 1;
2040
2041 }
2042
2043 /**
2044 * Flags used by the touch command.
2045 *
2046 * \sa com_touch().
2047 */
2048 enum touch_flags {
2049 /** Whether the \p FNM_PATHNAME flag should be passed to fnmatch(). */
2050 TOUCH_FLAG_FNM_PATHNAME = 1,
2051 /** Activates verbose mode. */
2052 TOUCH_FLAG_VERBOSE = 2
2053 };
2054
2055 /** Options used by com_touch(). */
2056 struct com_touch_options {
2057 /** New num_played value. */
2058 int32_t num_played;
2059 /** New last played count. */
2060 int64_t last_played;
2061 /** New lyrics id. */
2062 int32_t lyrics_id;
2063 /** New image id. */
2064 int32_t image_id;
2065 /** New amplification value. */
2066 int32_t amp;
2067 /** Command line flags (see \ref touch_flags). */
2068 unsigned flags;
2069 };
2070
2071 /** Data passed to the action handler of com_touch(). */
2072 struct touch_action_data {
2073 /** Command line options (see \ref com_touch_options). */
2074 struct com_touch_options *cto;
2075 /** Message buffer. */
2076 struct para_buffer pb;
2077 };
2078
2079 static int touch_audio_file(__a_unused struct osl_table *table,
2080 struct osl_row *row, const char *name, void *data)
2081 {
2082 struct touch_action_data *tad = data;
2083 struct osl_object obj;
2084 struct afs_info old_afsi, new_afsi;
2085 int ret, no_options = tad->cto->num_played < 0 && tad->cto->last_played < 0 &&
2086 tad->cto->lyrics_id < 0 && tad->cto->image_id < 0 && tad->cto->amp < 0;
2087 struct afsi_change_event_data aced;
2088
2089 ret = get_afsi_object_of_row(row, &obj);
2090 if (ret < 0)
2091 return para_printf(&tad->pb, "%s: %s\n", name, para_strerror(-ret));
2092 ret = load_afsi(&old_afsi, &obj);
2093 if (ret < 0)
2094 return para_printf(&tad->pb, "%s: %s\n", name, para_strerror(-ret));
2095 new_afsi = old_afsi;
2096 if (no_options) {
2097 new_afsi.num_played++;
2098 new_afsi.last_played = time(NULL);
2099 if (tad->cto->flags & TOUCH_FLAG_VERBOSE) {
2100 ret = para_printf(&tad->pb, "%s: num_played = %u, "
2101 "last_played = now()\n", name,
2102 new_afsi.num_played);
2103 if (ret < 0)
2104 return ret;
2105 }
2106 } else {
2107 if (tad->cto->flags & TOUCH_FLAG_VERBOSE) {
2108 ret = para_printf(&tad->pb, "touching %s\n", name);
2109 if (ret < 0)
2110 return ret;
2111 }
2112 if (tad->cto->lyrics_id >= 0)
2113 new_afsi.lyrics_id = tad->cto->lyrics_id;
2114 if (tad->cto->image_id >= 0)
2115 new_afsi.image_id = tad->cto->image_id;
2116 if (tad->cto->num_played >= 0)
2117 new_afsi.num_played = tad->cto->num_played;
2118 if (tad->cto->last_played >= 0)
2119 new_afsi.last_played = tad->cto->last_played;
2120 if (tad->cto->amp >= 0)
2121 new_afsi.amp = tad->cto->amp;
2122 }
2123 save_afsi(&new_afsi, &obj); /* in-place update */
2124 aced.aft_row = row;
2125 aced.old_afsi = &old_afsi;
2126 afs_event(AFSI_CHANGE, &tad->pb, &aced);
2127 return 1;
2128 }
2129
2130 static void com_touch_callback(int fd, const struct osl_object *query)
2131 {
2132 struct touch_action_data tad = {.cto = query->data,
2133 .pb = {
2134 .max_size = shm_get_shmmax(),
2135 .private_data = &fd,
2136 .max_size_handler = afs_max_size_handler
2137 }
2138 };
2139 int ret, ret2 = 0;
2140 struct pattern_match_data pmd = {
2141 .table = audio_file_table,
2142 .loop_col_num = AFTCOL_HASH,
2143 .match_col_num = AFTCOL_PATH,
2144 .patterns = {.data = (char *)query->data + sizeof(*tad.cto),
2145 .size = query->size - sizeof(*tad.cto)},
2146 .data = &tad,
2147 .action = touch_audio_file
2148 };
2149 if (tad.cto->flags & TOUCH_FLAG_FNM_PATHNAME)
2150 pmd.fnmatch_flags |= FNM_PATHNAME;
2151 ret = for_each_matching_row(&pmd);
2152 if (ret < 0)
2153 ret2 = para_printf(&tad.pb, "%s\n", para_strerror(-ret));
2154 else if (pmd.num_matches == 0)
2155 ret2 = para_printf(&tad.pb, "no matches\n");
2156 if (ret2 >= 0 && tad.pb.offset)
2157 pass_buffer_as_shm(fd, SBD_OUTPUT, tad.pb.buf, tad.pb.offset);
2158 free(tad.pb.buf);
2159 }
2160
2161 int com_touch(struct command_context *cc)
2162 {
2163 struct com_touch_options cto = {
2164 .num_played = -1,
2165 .last_played = -1,
2166 .lyrics_id = -1,
2167 .image_id = -1,
2168 .amp = -1,
2169 };
2170 struct osl_object query = {.data = &cto, .size = sizeof(cto)};
2171 int i, ret;
2172
2173
2174 for (i = 1; i < cc->argc; i++) {
2175 const char *arg = cc->argv[i];
2176 if (arg[0] != '-')
2177 break;
2178 if (!strcmp(arg, "--")) {
2179 i++;
2180 break;
2181 }
2182 if (!strncmp(arg, "-n=", 3)) {
2183 ret = para_atoi32(arg + 3, &cto.num_played);
2184 if (ret < 0)
2185 return ret;
2186 continue;
2187 }
2188 if (!strncmp(arg, "-l=", 3)) {
2189 ret = para_atoi64(arg + 3, &cto.last_played);
2190 if (ret < 0)
2191 return ret;
2192 continue;
2193 }
2194 if (!strncmp(arg, "-y=", 3)) {
2195 ret = para_atoi32(arg + 3, &cto.lyrics_id);
2196 if (ret < 0)
2197 return ret;
2198 continue;
2199 }
2200 if (!strncmp(arg, "-i=", 3)) {
2201 ret = para_atoi32(arg + 3, &cto.image_id);
2202 if (ret < 0)
2203 return ret;
2204 continue;
2205 }
2206 if (!strncmp(arg, "-a=", 3)) {
2207 int32_t val;
2208 ret = para_atoi32(arg + 3, &val);
2209 if (ret < 0)
2210 return ret;
2211 if (val < 0 || val > 255)
2212 return -ERRNO_TO_PARA_ERROR(EINVAL);
2213 cto.amp = val;
2214 continue;
2215 }
2216 if (!strcmp(arg, "-p")) {
2217 cto.flags |= TOUCH_FLAG_FNM_PATHNAME;
2218 continue;
2219 }
2220 if (!strcmp(arg, "-v")) {
2221 cto.flags |= TOUCH_FLAG_VERBOSE;
2222 continue;
2223 }
2224 break; /* non-option starting with dash */
2225 }
2226 if (i >= cc->argc)
2227 return -E_AFT_SYNTAX;
2228 ret = send_option_arg_callback_request(&query, cc->argc - i,
2229 cc->argv + i, com_touch_callback, afs_cb_result_handler, cc);
2230 if (ret < 0)
2231 send_strerror(cc, -ret);
2232 return ret;
2233 }
2234
2235 /** Flags for com_rm(). */
2236 enum rm_flags {
2237 /** -v */
2238 RM_FLAG_VERBOSE = 1,
2239 /** -f */
2240 RM_FLAG_FORCE = 2,
2241 /** -p */
2242 RM_FLAG_FNM_PATHNAME = 4
2243 };
2244
2245 /** Data passed to the action handler of com_rm(). */
2246 struct com_rm_action_data {
2247 /** Command line flags ((see \ref rm_flags). */
2248 uint32_t flags;
2249 /** Message buffer. */
2250 struct para_buffer pb;
2251 };
2252
2253 static int remove_audio_file(__a_unused struct osl_table *table,
2254 struct osl_row *row, const char *name, void *data)
2255 {
2256 struct com_rm_action_data *crd = data;
2257 int ret;
2258
2259 if (crd->flags & RM_FLAG_VERBOSE) {
2260 ret = para_printf(&crd->pb, "removing %s\n", name);
2261 if (ret < 0)
2262 return ret;
2263 }
2264 afs_event(AUDIO_FILE_REMOVE, &crd->pb, row);
2265 ret = osl(osl_del_row(audio_file_table, row));
2266 if (ret < 0)
2267 para_printf(&crd->pb, "%s: %s\n", name, para_strerror(-ret));
2268 return ret;
2269 }
2270
2271 static void com_rm_callback(int fd, const struct osl_object *query)
2272 {
2273 struct com_rm_action_data crd = {.flags = *(uint32_t *)query->data,
2274 .pb = {
2275 .max_size = shm_get_shmmax(),
2276 .private_data = &fd,
2277 .max_size_handler = afs_max_size_handler
2278 }
2279 };
2280 int ret;
2281 struct pattern_match_data pmd = {
2282 .table = audio_file_table,
2283 .loop_col_num = AFTCOL_HASH,
2284 .match_col_num = AFTCOL_PATH,
2285 .patterns = {.data = (char *)query->data + sizeof(uint32_t),
2286 .size = query->size - sizeof(uint32_t)},
2287 .data = &crd,
2288 .action = remove_audio_file
2289 };
2290 if (crd.flags & RM_FLAG_FNM_PATHNAME)
2291 pmd.fnmatch_flags |= FNM_PATHNAME;
2292 ret = for_each_matching_row(&pmd);
2293 if (ret < 0) {
2294 para_printf(&crd.pb, "%s\n", para_strerror(-ret));
2295 return;
2296 }
2297 if ((pmd.num_matches == 0) && !(crd.flags & RM_FLAG_FORCE))
2298 ret = para_printf(&crd.pb, "no matches -- nothing removed\n");
2299 else if (crd.flags & RM_FLAG_VERBOSE) {
2300 ret = para_printf(&crd.pb, "removed %u files\n",
2301 pmd.num_matches);
2302 }
2303 if (ret >= 0 && crd.pb.offset)
2304 pass_buffer_as_shm(fd, SBD_OUTPUT, crd.pb.buf, crd.pb.offset);
2305 free(crd.pb.buf);
2306 }
2307
2308 /* TODO options: -r (recursive) */
2309 int com_rm(struct command_context *cc)
2310 {
2311 uint32_t flags = 0;
2312 struct osl_object query = {.data = &flags, .size = sizeof(flags)};
2313 int i, ret;
2314
2315 for (i = 1; i < cc->argc; i++) {
2316 const char *arg = cc->argv[i];
2317 if (arg[0] != '-')
2318 break;
2319 if (!strcmp(arg, "--")) {
2320 i++;
2321 break;
2322 }
2323 if (!strcmp(arg, "-f")) {
2324 flags |= RM_FLAG_FORCE;
2325 continue;
2326 }
2327 if (!strcmp(arg, "-p")) {
2328 flags |= RM_FLAG_FNM_PATHNAME;
2329 continue;
2330 }
2331 if (!strcmp(arg, "-v")) {
2332 flags |= RM_FLAG_VERBOSE;
2333 continue;
2334 }
2335 break;
2336 }
2337 if (i >= cc->argc)
2338 return -E_AFT_SYNTAX;
2339 ret = send_option_arg_callback_request(&query, cc->argc - i,
2340 cc->argv + i, com_rm_callback, afs_cb_result_handler, cc);
2341 if (ret < 0)
2342 send_strerror(cc, -ret);
2343 return ret;
2344 }
2345
2346 /**
2347 * Flags used by the cpsi command.
2348 *
2349 * \sa com_cpsi().
2350 */
2351 enum cpsi_flags {
2352 /** Whether the lyrics id should be copied. */
2353 CPSI_FLAG_COPY_LYRICS_ID = 1,
2354 /** Whether the image id should be copied. */
2355 CPSI_FLAG_COPY_IMAGE_ID = 2,
2356 /** Whether the lastplayed time should be copied. */
2357 CPSI_FLAG_COPY_LASTPLAYED = 4,
2358 /** Whether the numplayed count should be copied. */
2359 CPSI_FLAG_COPY_NUMPLAYED = 8,
2360 /** Whether the attributes should be copied. */
2361 CPSI_FLAG_COPY_ATTRIBUTES = 16,
2362 /** Activates verbose mode. */
2363 CPSI_FLAG_VERBOSE = 32,
2364 };
2365
2366 /** Data passed to the action handler of com_cpsi(). */
2367 struct cpsi_action_data {
2368 /** command line flags (see \ref cpsi_flags). */
2369 unsigned flags;
2370 /** Message buffer. */
2371 struct para_buffer pb;
2372 /** Values are copied from here. */
2373 struct afs_info source_afsi;
2374 };
2375
2376 static int copy_selector_info(__a_unused struct osl_table *table,
2377 struct osl_row *row, const char *name, void *data)
2378 {
2379 struct cpsi_action_data *cad = data;
2380 struct osl_object target_afsi_obj;
2381 int ret;
2382 struct afs_info old_afsi, target_afsi;
2383 struct afsi_change_event_data aced;
2384
2385 ret = get_afsi_object_of_row(row, &target_afsi_obj);
2386 if (ret < 0)
2387 return ret;
2388 load_afsi(&target_afsi, &target_afsi_obj);
2389 old_afsi = target_afsi;
2390 if (cad->flags & CPSI_FLAG_COPY_LYRICS_ID)
2391 target_afsi.lyrics_id = cad->source_afsi.lyrics_id;
2392 if (cad->flags & CPSI_FLAG_COPY_IMAGE_ID)
2393 target_afsi.image_id = cad->source_afsi.image_id;
2394 if (cad->flags & CPSI_FLAG_COPY_LASTPLAYED)
2395 target_afsi.last_played = cad->source_afsi.last_played;
2396 if (cad->flags & CPSI_FLAG_COPY_NUMPLAYED)
2397 target_afsi.num_played = cad->source_afsi.num_played;
2398 if (cad->flags & CPSI_FLAG_COPY_ATTRIBUTES)
2399 target_afsi.attributes = cad->source_afsi.attributes;
2400 save_afsi(&target_afsi, &target_afsi_obj); /* in-place update */
2401 if (cad->flags & CPSI_FLAG_VERBOSE) {
2402 ret = para_printf(&cad->pb, "copied afsi to %s\n", name);
2403 if (ret < 0)
2404 return ret;
2405 }
2406 aced.aft_row = row;
2407 aced.old_afsi = &old_afsi;
2408 afs_event(AFSI_CHANGE, &cad->pb, &aced);
2409 return 1;
2410 }
2411
2412 static void com_cpsi_callback(int fd, const struct osl_object *query)
2413 {
2414 struct cpsi_action_data cad = {
2415 .flags = *(unsigned *)query->data,
2416 .pb = {
2417 .max_size = shm_get_shmmax(),
2418 .private_data = &fd,
2419 .max_size_handler = afs_max_size_handler
2420 }
2421 };
2422 int ret;
2423 char *source_path = (char *)query->data + sizeof(cad.flags);
2424 struct pattern_match_data pmd = {
2425 .table = audio_file_table,
2426 .loop_col_num = AFTCOL_HASH,
2427 .match_col_num = AFTCOL_PATH,
2428 .patterns = {.data = source_path + strlen(source_path) + 1,
2429 .size = query->size - sizeof(cad.flags)
2430 - strlen(source_path) - 1},
2431 .data = &cad,
2432 .action = copy_selector_info
2433 };
2434
2435 ret = get_afsi_of_path(source_path, &cad.source_afsi);
2436 if (ret < 0)
2437 goto out;
2438 ret = for_each_matching_row(&pmd);
2439 out:
2440 if (ret < 0)
2441 para_printf(&cad.pb, "%s\n", para_strerror(-ret));
2442 else if (cad.flags & CPSI_FLAG_VERBOSE) {
2443 if (pmd.num_matches > 0)
2444 para_printf(&cad.pb, "copied requested afsi from %s "
2445 "to %u files\n", source_path, pmd.num_matches);
2446 else
2447 para_printf(&cad.pb, "nothing copied\n");
2448 }
2449 if (cad.pb.offset)
2450 pass_buffer_as_shm(fd, SBD_OUTPUT, cad.pb.buf, cad.pb.offset);
2451 free(cad.pb.buf);
2452 }
2453
2454 int com_cpsi(struct command_context *cc)
2455 {
2456 unsigned flags = 0;
2457 int i, ret;
2458 struct osl_object options = {.data = &flags, .size = sizeof(flags)};
2459
2460 for (i = 1; i < cc->argc; i++) {
2461 const char *arg = cc->argv[i];
2462 if (arg[0] != '-')
2463 break;
2464 if (!strcmp(arg, "--")) {
2465 i++;
2466 break;
2467 }
2468 if (!strcmp(arg, "-y")) {
2469 flags |= CPSI_FLAG_COPY_LYRICS_ID;
2470 continue;
2471 }
2472 if (!strcmp(arg, "-i")) {
2473 flags |= CPSI_FLAG_COPY_IMAGE_ID;
2474 continue;
2475 }
2476 if (!strcmp(arg, "-l")) {
2477 flags |= CPSI_FLAG_COPY_LASTPLAYED;
2478 continue;
2479 }
2480 if (!strcmp(arg, "-n")) {
2481 flags |= CPSI_FLAG_COPY_NUMPLAYED;
2482 continue;
2483 }
2484 if (!strcmp(arg, "-a")) {
2485 flags |= CPSI_FLAG_COPY_ATTRIBUTES;
2486 continue;
2487 }
2488 if (!strcmp(arg, "-v")) {
2489 flags |= CPSI_FLAG_VERBOSE;
2490 continue;
2491 }
2492 break;
2493 }
2494 if (i + 1 >= cc->argc) /* need at least source file and pattern */
2495 return -E_AFT_SYNTAX;
2496 if (!(flags & ~CPSI_FLAG_VERBOSE)) /* no copy flags given */
2497 flags = ~(unsigned)CPSI_FLAG_VERBOSE | flags;
2498 ret = send_option_arg_callback_request(&options, cc->argc - i,
2499 cc->argv + i, com_cpsi_callback, afs_cb_result_handler, cc);
2500 if (ret < 0)
2501 send_strerror(cc, -ret);
2502 return ret;
2503 }
2504
2505 static void afs_stat_callback(int fd, const struct osl_object *query)
2506 {
2507 int *parser_friendly = query->data;
2508 char *buf = *parser_friendly?
2509 parser_friendly_status_items : status_items;
2510
2511 if (!buf)
2512 return;
2513 pass_buffer_as_shm(fd, SBD_OUTPUT, buf, strlen(buf));
2514 }
2515
2516 /**
2517 * Get the current afs status items from the afs process and send it.
2518 *
2519 * \param cc The command context, used e.g. for data encryption.
2520 * \param parser_friendly Whether parser-friendly output format should be used.
2521 *
2522 * As the contents of the afs status items change in time and the command
2523 * handler only has a COW version created at fork time, it can not send
2524 * up-to-date afs status items directly. Therefore the usual callback mechanism
2525 * is used to pass the status items from the afs process to the command handler
2526 * via a shared memory area and a pipe.
2527 *
2528 * \return The return value of the underyling call to \ref send_callback_request().
2529 */
2530 int send_afs_status(struct command_context *cc, int parser_friendly)
2531 {
2532 struct osl_object query = {.data = &parser_friendly,
2533 .size = sizeof(parser_friendly)};
2534
2535 return send_callback_request(afs_stat_callback, &query,
2536 afs_cb_result_handler, cc);
2537 }
2538
2539 /* TODO: optionally fix problems by removing offending rows */
2540 static int check_audio_file(struct osl_row *row, void *data)
2541 {
2542 char *path;
2543 struct para_buffer *pb = data;
2544 struct stat statbuf;
2545 int ret = get_audio_file_path_of_row(row, &path);
2546 struct afs_info afsi;
2547 char *blob_name;
2548
2549 if (ret < 0)
2550 return para_printf(pb, "%s\n", para_strerror(-ret));
2551 if (stat(path, &statbuf) < 0) {
2552 ret = para_printf(pb, "%s: stat error (%s)\n", path, strerror(errno));
2553 if (ret < 0)
2554 return ret;
2555 } else {
2556 if (!S_ISREG(statbuf.st_mode)) {
2557 ret = para_printf(pb, "%s: not a regular file\n", path);
2558 if (ret < 0)
2559 return ret;
2560 }
2561 }
2562 ret = get_afsi_of_row(row, &afsi);
2563 if (ret < 0)
2564 return para_printf(pb, "%s: %s\n", path, para_strerror(-ret));
2565 ret = lyr_get_name_by_id(afsi.lyrics_id, &blob_name);
2566 if (ret < 0) {
2567 ret = para_printf(pb, "%s lyrics id %u: %s\n", path, afsi.lyrics_id,
2568 para_strerror(-ret));
2569 if (ret < 0)
2570 return ret;
2571 }
2572 ret = img_get_name_by_id(afsi.image_id, &blob_name);
2573 if (ret < 0)
2574 ret = para_printf(pb, "%s image id %u: %s\n", path, afsi.image_id,
2575 para_strerror(-ret));
2576 return ret;
2577 }
2578
2579 /**
2580 * Check the audio file table for inconsistencies.
2581 *
2582 * \param fd The afs socket.
2583 * \param query Unused.
2584 *
2585 * This function always succeeds.
2586 *
2587 * \sa com_check().
2588 */
2589 void aft_check_callback(int fd, __a_unused const struct osl_object *query)
2590 {
2591 struct para_buffer pb = {
2592 .max_size = shm_get_shmmax(),
2593 .private_data = &(struct afs_max_size_handler_data) {
2594 .fd = fd,
2595 .band = SBD_OUTPUT
2596 },
2597 .max_size_handler = afs_max_size_handler
2598 };
2599 int ret = para_printf(&pb, "checking audio file table...\n");
2600
2601 if (ret < 0)
2602 return;
2603 audio_file_loop(&pb, check_audio_file);
2604 if (pb.offset)
2605 pass_buffer_as_shm(fd, SBD_OUTPUT, pb.buf, pb.offset);
2606 free(pb.buf);
2607 }
2608
2609 /**
2610 * Close the audio file table.
2611 *
2612 * \param flags Usual flags that are passed to osl_close_table().
2613 *
2614 * \sa osl_close_table().
2615 */
2616 static void aft_close(void)
2617 {
2618 osl_close_table(audio_file_table, OSL_MARK_CLEAN);
2619 audio_file_table = NULL;
2620 }
2621
2622 /**
2623 * Open the audio file table.
2624 *
2625 * \param dir The database directory.
2626 *
2627 * \return Standard.
2628 *
2629 * \sa osl_open_table().
2630 */
2631 static int aft_open(const char *dir)
2632 {
2633 int ret;
2634
2635 audio_file_table_desc.dir = dir;
2636 ret = osl(osl_open_table(&audio_file_table_desc, &audio_file_table));
2637 if (ret >= 0) {
2638 unsigned num;
2639 osl_get_num_rows(audio_file_table, &num);
2640 PARA_INFO_LOG("audio file table contains %d files\n", num);
2641 return ret;
2642 }
2643 PARA_INFO_LOG("failed to open audio file table\n");
2644 audio_file_table = NULL;
2645 if (ret >= 0 || ret == -OSL_ERRNO_TO_PARA_ERROR(E_OSL_NOENT))
2646 return 1;
2647 return ret;
2648 }
2649
2650 static int aft_create(const char *dir)
2651 {
2652 audio_file_table_desc.dir = dir;
2653 return osl(osl_create_table(&audio_file_table_desc));
2654 }
2655
2656 static int clear_attribute(struct osl_row *row, void *data)
2657 {
2658 struct rmatt_event_data *red = data;
2659 struct afs_info afsi;
2660 struct osl_object obj;
2661 int ret = get_afsi_object_of_row(row, &obj);
2662 uint64_t mask = ~(1ULL << red->bitnum);
2663
2664 if (ret < 0)
2665 return ret;
2666 ret = load_afsi(&afsi, &obj);
2667 if (ret < 0)
2668 return ret;
2669 afsi.attributes &= mask;
2670 save_afsi(&afsi, &obj);
2671 return 1;
2672 }
2673
2674 static int aft_event_handler(enum afs_events event, struct para_buffer *pb,
2675 void *data)
2676 {
2677 int ret;
2678
2679 switch(event) {
2680 case ATTRIBUTE_REMOVE: {
2681 const struct rmatt_event_data *red = data;
2682 ret = para_printf(pb, "clearing attribute %s (bit %u) from all "
2683 "entries in the audio file table\n", red->name,
2684 red->bitnum);
2685 if (ret < 0)
2686 return ret;
2687 return audio_file_loop(data, clear_attribute);
2688 }
2689 default:
2690 return 1;
2691 }
2692 }
2693
2694 /**
2695 * Initialize the audio file table.
2696 *
2697 * \param t Pointer to the structure to be initialized.
2698 */
2699 void aft_init(struct afs_table *t)
2700 {
2701 t->open = aft_open;
2702 t->close = aft_close;
2703 t->create = aft_create;
2704 t->event_handler = aft_event_handler;
2705 }