afs: Simplify open_next_audio_file().
[paraslash.git] / aft.c
1 /*
2 * Copyright (C) 2007 Andre Noll <maan@tuebingen.mpg.de>
3 *
4 * Licensed under the GPL v2. For licencing details see COPYING.
5 */
6
7 /** \file aft.c Audio file table functions. */
8
9 #include <regex.h>
10 #include <sys/mman.h>
11 #include <fnmatch.h>
12 #include <sys/shm.h>
13 #include <osl.h>
14
15 #include "para.h"
16 #include "error.h"
17 #include "crypt.h"
18 #include "string.h"
19 #include "afh.h"
20 #include "afs.h"
21 #include "fd.h"
22 #include "ipc.h"
23 #include "portable_io.h"
24 #include "sideband.h"
25 #include "command.h"
26
27 static struct osl_table *audio_file_table;
28 static char *status_items;
29 static char *parser_friendly_status_items;
30
31 /** The different sorting methods of the ls command. */
32 enum ls_sorting_method {
33 /** -sp (default) */
34 LS_SORT_BY_PATH,
35 /** -ss */
36 LS_SORT_BY_SCORE,
37 /** -sl */
38 LS_SORT_BY_LAST_PLAYED,
39 /** -sn */
40 LS_SORT_BY_NUM_PLAYED,
41 /** -sf */
42 LS_SORT_BY_FREQUENCY,
43 /** -sc */
44 LS_SORT_BY_CHANNELS,
45 /** -si */
46 LS_SORT_BY_IMAGE_ID,
47 /** -sy */
48 LS_SORT_BY_LYRICS_ID,
49 /** -sb */
50 LS_SORT_BY_BITRATE,
51 /** -sd */
52 LS_SORT_BY_DURATION,
53 /** -sa */
54 LS_SORT_BY_AUDIO_FORMAT,
55 /** -sh */
56 LS_SORT_BY_HASH,
57 };
58
59 /** The different listing modes of the ls command. */
60 enum ls_listing_mode {
61 /** Default listing mode. */
62 LS_MODE_SHORT,
63 /** -l or -ll */
64 LS_MODE_LONG,
65 /** -lv */
66 LS_MODE_VERBOSE,
67 /** -lm */
68 LS_MODE_MBOX,
69 /** -lc */
70 LS_MODE_CHUNKS,
71 /** -lp */
72 LS_MODE_PARSER,
73 };
74
75 /* Data about one audio file. Needed for ls and stat output. */
76 struct ls_data {
77 /* Usual audio format handler information. */
78 struct afh_info afhi;
79 /* Audio file selector information. */
80 struct afs_info afsi;
81 /* The full path of the audio file. */
82 char *path;
83 /* The score value (if -a was given). */
84 long score;
85 /* The hash value of the audio file data. */
86 unsigned char *hash;
87 };
88
89 /** The flags accepted by the ls command. */
90 enum ls_flags {
91 /** -p */
92 LS_FLAG_FULL_PATH = 1,
93 /** -a */
94 LS_FLAG_ADMISSIBLE_ONLY = 2,
95 /** -r */
96 LS_FLAG_REVERSE = 4,
97 /** -d */
98 LS_FLAG_UNIXDATE = 8,
99 };
100
101 /**
102 * The size of the individual output fields of the ls command.
103 *
104 * These depend on the content being listed. For example, if each listed file
105 * is shorter than an hour, the duration format is set to mm:ss. Otherwise it
106 * is set to hh:mm:ss.
107 */
108 struct ls_widths {
109 /** size of the score field. */
110 unsigned short score_width;
111 /** size of the image id field. */
112 unsigned short image_id_width;
113 /** size of the lyrics id field. */
114 unsigned short lyrics_id_width;
115 /** size of the bitrate field. */
116 unsigned short bitrate_width;
117 /** size of the frequency field. */
118 unsigned short frequency_width;
119 /** size of the duration field. */
120 unsigned short duration_width;
121 /** size of the num played field. */
122 unsigned short num_played_width;
123 /** size of the amp field. */
124 unsigned short amp_width;
125 /** size of the audio format field. */
126 unsigned short audio_format_width;
127 };
128
129 /** Data passed from the ls command handler to its callback function. */
130 struct ls_options {
131 /** The given command line flags. */
132 unsigned flags;
133 /** The sorting method given at the command line. */
134 enum ls_sorting_method sorting;
135 /** The given listing mode (short, long, verbose, mbox). */
136 enum ls_listing_mode mode;
137 /** The arguments passed to the ls command. */
138 char **patterns;
139 /** Number of non-option arguments. */
140 int num_patterns;
141 /** Used for long listing mode to align the output fields. */
142 struct ls_widths widths;
143 /** Size of the \a data array. */
144 uint32_t array_size;
145 /** Number of used entries in the data array. */
146 uint32_t num_matching_paths;
147 /** Array of matching entries. */
148 struct ls_data *data;
149 /** Used to sort the array. */
150 struct ls_data **data_ptr;
151 };
152
153 /**
154 * Describes the layout of the mmapped-afs info struct.
155 *
156 * \sa struct afs_info.
157 */
158 enum afsi_offsets {
159 /** Where .last_played is stored. */
160 AFSI_LAST_PLAYED_OFFSET = 0,
161 /** Storage position of the attributes bitmap. */
162 AFSI_ATTRIBUTES_OFFSET = 8,
163 /** Storage position of the .num_played field. */
164 AFSI_NUM_PLAYED_OFFSET = 16,
165 /** Storage position of the .image_id field. */
166 AFSI_IMAGE_ID_OFFSET = 20,
167 /** Storage position of the .lyrics_id field. */
168 AFSI_LYRICS_ID_OFFSET = 24,
169 /** Storage position of the .audio_format_id field. */
170 AFSI_AUDIO_FORMAT_ID_OFFSET = 28,
171 /** Storage position of the amplification field. */
172 AFSI_AMP_OFFSET = 29,
173 /** 2 bytes reserved space for future usage. */
174 AFSI_AUDIO_FORMAT_UNUSED_OFFSET = 30,
175 /** On-disk storage space needed. */
176 AFSI_SIZE = 32
177 };
178
179 /*
180 * Convert a struct afs_info to an osl object.
181 *
182 * \param afsi Pointer to the audio file info to be converted.
183 * \param obj Result pointer.
184 *
185 * \sa load_afsi().
186 */
187 static void save_afsi(struct afs_info *afsi, struct osl_object *obj)
188 {
189 char *buf = obj->data;
190
191 write_u64(buf + AFSI_LAST_PLAYED_OFFSET, afsi->last_played);
192 write_u64(buf + AFSI_ATTRIBUTES_OFFSET, afsi->attributes);
193 write_u32(buf + AFSI_NUM_PLAYED_OFFSET, afsi->num_played);
194 write_u32(buf + AFSI_IMAGE_ID_OFFSET, afsi->image_id);
195 write_u32(buf + AFSI_LYRICS_ID_OFFSET, afsi->lyrics_id);
196 write_u8(buf + AFSI_AUDIO_FORMAT_ID_OFFSET,
197 afsi->audio_format_id);
198 write_u8(buf + AFSI_AMP_OFFSET, afsi->amp);
199 memset(buf + AFSI_AUDIO_FORMAT_UNUSED_OFFSET, 0, 2);
200 }
201
202 /*
203 * Get the audio file selector info struct stored in an osl object.
204 *
205 * \param afsi Points to the audio_file info structure to be filled in.
206 * \param obj The osl object holding the data.
207 *
208 * \return Standard.
209 *
210 * \sa save_afsi().
211 */
212 static int load_afsi(struct afs_info *afsi, struct osl_object *obj)
213 {
214 char *buf = obj->data;
215 if (obj->size < AFSI_SIZE)
216 return -E_BAD_AFSI;
217 afsi->last_played = read_u64(buf + AFSI_LAST_PLAYED_OFFSET);
218 afsi->attributes = read_u64(buf + AFSI_ATTRIBUTES_OFFSET);
219 afsi->num_played = read_u32(buf + AFSI_NUM_PLAYED_OFFSET);
220 afsi->image_id = read_u32(buf + AFSI_IMAGE_ID_OFFSET);
221 afsi->lyrics_id = read_u32(buf + AFSI_LYRICS_ID_OFFSET);
222 afsi->audio_format_id = read_u8(buf +
223 AFSI_AUDIO_FORMAT_ID_OFFSET);
224 afsi->amp = read_u8(buf + AFSI_AMP_OFFSET);
225 return 1;
226 }
227
228 /** The columns of the audio file table. */
229 enum audio_file_table_columns {
230 /** The hash on the content of the audio file. */
231 AFTCOL_HASH,
232 /** The full path in the filesystem. */
233 AFTCOL_PATH,
234 /** The audio file selector info. */
235 AFTCOL_AFSI,
236 /** The audio format handler info. */
237 AFTCOL_AFHI,
238 /** The chunk table info and the chunk table of the audio file. */
239 AFTCOL_CHUNKS,
240 /** The number of columns of this table. */
241 NUM_AFT_COLUMNS
242 };
243
244 /**
245 * Compare two osl objects pointing to hash values.
246 *
247 * \param obj1 Pointer to the first hash object.
248 * \param obj2 Pointer to the second hash object.
249 *
250 * \return The values required for an osl compare function.
251 *
252 * \sa osl_compare_func, uint32_compare().
253 */
254 static int aft_hash_compare(const struct osl_object *obj1, const struct osl_object *obj2)
255 {
256 return hash_compare((unsigned char *)obj1->data, (unsigned char *)obj2->data);
257 }
258
259 static struct osl_column_description aft_cols[] = {
260 [AFTCOL_HASH] = {
261 .storage_type = OSL_MAPPED_STORAGE,
262 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE | OSL_UNIQUE,
263 .name = "hash",
264 .compare_function = aft_hash_compare,
265 .data_size = HASH_SIZE
266 },
267 [AFTCOL_PATH] = {
268 .storage_type = OSL_MAPPED_STORAGE,
269 .storage_flags = OSL_RBTREE | OSL_UNIQUE,
270 .name = "path",
271 .compare_function = string_compare,
272 },
273 [AFTCOL_AFSI] = {
274 .storage_type = OSL_MAPPED_STORAGE,
275 .storage_flags = OSL_FIXED_SIZE,
276 .name = "afs_info",
277 .data_size = AFSI_SIZE
278 },
279 [AFTCOL_AFHI] = {
280 .storage_type = OSL_MAPPED_STORAGE,
281 .name = "afh_info",
282 },
283 [AFTCOL_CHUNKS] = {
284 .storage_type = OSL_DISK_STORAGE,
285 .name = "chunks",
286 }
287 };
288
289 static struct osl_table_description audio_file_table_desc = {
290 .name = "audio_files",
291 .num_columns = NUM_AFT_COLUMNS,
292 .flags = OSL_LARGE_TABLE,
293 .column_descriptions = aft_cols
294 };
295
296 /* We don't want dot or dot-dot anywhere. */
297 static int verify_dotfile(const char *rest)
298 {
299 /*
300 * The first character was '.', but that has already been discarded, we
301 * now test the rest.
302 */
303 switch (*rest) {
304 case '\0': case '/': /* /foo/. and /foo/./bar are not ok */
305 return -1;
306 case '.': /* path start with /foo/.. */
307 if (rest[1] == '\0' || rest[1] == '/')
308 return -1; /* /foo/.. or /foo/../bar are not ok */
309 /* /foo/..bar is ok */
310 }
311 return 1;
312 }
313
314 /*
315 * We fundamentally don't like some paths: We don't want double slashes or
316 * slashes at the end that can make pathnames ambiguous.
317 */
318 static int verify_path(const char *orig_path, char **resolved_path)
319 {
320 char c;
321 size_t len;
322 char *path;
323
324 if (*orig_path != '/') /* we only accept absolute paths */
325 return -E_BAD_PATH;
326 len = strlen(orig_path);
327 *resolved_path = para_strdup(orig_path);
328 path = *resolved_path;
329 while (len > 1 && path[--len] == '/')
330 path[len] = '\0'; /* remove slash at the end */
331 c = *path++;
332 while (c) {
333 if (c == '/') {
334 c = *path++;
335 switch (c) {
336 case '/': /* double slash */
337 goto bad_path;
338 case '.':
339 if (verify_dotfile(path) < 0)
340 goto bad_path;
341 default:
342 continue;
343 }
344 }
345 c = *path++;
346 }
347 return 1;
348 bad_path:
349 free(*resolved_path);
350 return -E_BAD_PATH;
351 }
352
353 /** The on-disk layout of a afhi struct. */
354 enum afhi_offsets {
355 /** Where the number of seconds is stored. */
356 AFHI_SECONDS_TOTAL_OFFSET = 0,
357 /** Position of the bitrate. */
358 AFHI_BITRATE_OFFSET = 4,
359 /** Position of the frequency. */
360 AFHI_FREQUENCY_OFFSET = 8,
361 /** Was: Location of the audio file header. */
362 AFHI_UNUSED1_OFFSET = 12,
363 /* Length of the audio file header. Zero means: No header. */
364 AFHI_HEADER_LEN_OFFSET = 16,
365 /** The total number of chunks (4 bytes). */
366 CHUNKS_TOTAL_OFFSET = 20,
367 /** The length of the audio file header (4 bytes). */
368 HEADER_LEN_OFFSET = 24,
369 /** Was: The start of the audio file header (4 bytes). */
370 AFHI_UNUSED2_OFFSET = 28,
371 /** The seconds part of the chunk time (4 bytes). */
372 CHUNK_TV_TV_SEC_OFFSET = 32,
373 /** The microseconds part of the chunk time (4 bytes). */
374 CHUNK_TV_TV_USEC_OFFSET = 36,
375 /** Number of channels is stored here. (1 byte) */
376 AFHI_CHANNELS_OFFSET = 40,
377 /** The tag info position. */
378 AFHI_INFO_STRING_OFFSET = 41,
379 /** Minimal on-disk size of a valid afhi struct. */
380 MIN_AFHI_SIZE = 47, /* at least 6 null bytes for techinfo/tags */
381 };
382
383 static unsigned sizeof_afhi_buf(const struct afh_info *afhi)
384 {
385 if (!afhi)
386 return 0;
387 return MIN_AFHI_SIZE
388 + strlen(afhi->techinfo)
389 + strlen(afhi->tags.artist)
390 + strlen(afhi->tags.title)
391 + strlen(afhi->tags.year)
392 + strlen(afhi->tags.album)
393 + strlen(afhi->tags.comment);
394 }
395
396 static void save_afhi(struct afh_info *afhi, char *buf)
397 {
398 char *p;
399
400 if (!afhi)
401 return;
402 write_u32(buf + AFHI_SECONDS_TOTAL_OFFSET, afhi->seconds_total);
403 write_u32(buf + AFHI_BITRATE_OFFSET, afhi->bitrate);
404 write_u32(buf + AFHI_FREQUENCY_OFFSET, afhi->frequency);
405 write_u32(buf + AFHI_UNUSED1_OFFSET, 0);
406 write_u32(buf + AFHI_HEADER_LEN_OFFSET, afhi->header_len);
407 write_u8(buf + AFHI_CHANNELS_OFFSET, afhi->channels);
408 write_u32(buf + CHUNKS_TOTAL_OFFSET, afhi->chunks_total);
409 write_u32(buf + HEADER_LEN_OFFSET, afhi->header_len);
410 write_u32(buf + AFHI_UNUSED2_OFFSET, 0);
411 write_u32(buf + CHUNK_TV_TV_SEC_OFFSET, afhi->chunk_tv.tv_sec);
412 write_u32(buf + CHUNK_TV_TV_USEC_OFFSET, afhi->chunk_tv.tv_usec);
413 p = buf + AFHI_INFO_STRING_OFFSET;
414 /* The sprintf's below are OK as our caller made sure that buf is large enough */
415 p += sprintf(p, "%s", afhi->techinfo) + 1;
416 p += sprintf(p, "%s", afhi->tags.artist) + 1;
417 p += sprintf(p, "%s", afhi->tags.title) + 1;
418 p += sprintf(p, "%s", afhi->tags.year) + 1;
419 p += sprintf(p, "%s", afhi->tags.album) + 1;
420 sprintf(p, "%s", afhi->tags.comment);
421 }
422
423 static void load_afhi(const char *buf, struct afh_info *afhi)
424 {
425 afhi->seconds_total = read_u32(buf + AFHI_SECONDS_TOTAL_OFFSET);
426 afhi->bitrate = read_u32(buf + AFHI_BITRATE_OFFSET);
427 afhi->frequency = read_u32(buf + AFHI_FREQUENCY_OFFSET);
428 afhi->header_len = read_u32(buf + AFHI_HEADER_LEN_OFFSET);
429 afhi->channels = read_u8(buf + AFHI_CHANNELS_OFFSET);
430 afhi->chunks_total = read_u32(buf + CHUNKS_TOTAL_OFFSET);
431 afhi->header_len = read_u32(buf + HEADER_LEN_OFFSET);
432 afhi->chunk_tv.tv_sec = read_u32(buf + CHUNK_TV_TV_SEC_OFFSET);
433 afhi->chunk_tv.tv_usec = read_u32(buf + CHUNK_TV_TV_USEC_OFFSET);
434 afhi->techinfo = (char *)buf + AFHI_INFO_STRING_OFFSET;
435 afhi->tags.artist = afhi->techinfo + strlen(afhi->techinfo) + 1;
436 afhi->tags.title = afhi->tags.artist + strlen(afhi->tags.artist) + 1;
437 afhi->tags.year = afhi->tags.title + strlen(afhi->tags.title) + 1;
438 afhi->tags.album = afhi->tags.year + strlen(afhi->tags.year) + 1;
439 afhi->tags.comment = afhi->tags.album + strlen(afhi->tags.album) + 1;
440 }
441
442 static unsigned sizeof_chunk_table(struct afh_info *afhi)
443 {
444 if (!afhi)
445 return 0;
446 return 4 * (afhi->chunks_total + 1);
447 }
448
449 static uint32_t save_chunk_table(struct afh_info *afhi, char *buf)
450 {
451 int i;
452 uint32_t max = 0, old = 0;
453
454 for (i = 0; i <= afhi->chunks_total; i++) {
455 uint32_t val = afhi->chunk_table[i];
456 write_u32(buf + 4 * i, val);
457 /*
458 * If the first chunk is the header, do not consider it for the
459 * calculation of the largest chunk size.
460 */
461 if (i == 0 || (i == 1 && afhi->header_len > 0)) {
462 old = val;
463 continue;
464 }
465 max = PARA_MAX(max, val - old);
466 old = val;
467 }
468 return max;
469 }
470
471 static void load_chunk_table(struct afh_info *afhi, char *buf)
472 {
473 int i;
474
475 afhi->chunk_table = para_malloc(sizeof_chunk_table(afhi));
476 for (i = 0; i <= afhi->chunks_total; i++)
477 afhi->chunk_table[i] = read_u32(buf + 4 * i);
478 }
479
480 /**
481 * Get the row of the audio file table corresponding to the given path.
482 *
483 * \param path The full path of the audio file.
484 * \param row Result pointer.
485 *
486 * \return Standard.
487 */
488 int aft_get_row_of_path(const char *path, struct osl_row **row)
489 {
490 struct osl_object obj = {.data = (char *)path, .size = strlen(path) + 1};
491
492 return osl(osl_get_row(audio_file_table, AFTCOL_PATH, &obj, row));
493 }
494
495 /**
496 * Get the row of the audio file table corresponding to the given hash value.
497 *
498 * \param hash The hash value of the desired audio file.
499 * \param row Result pointer.
500 *
501 * \return Standard.
502 */
503 static int aft_get_row_of_hash(unsigned char *hash, struct osl_row **row)
504 {
505 const struct osl_object obj = {.data = hash, .size = HASH_SIZE};
506 return osl(osl_get_row(audio_file_table, AFTCOL_HASH, &obj, row));
507 }
508
509 /*
510 * Get the audio file selector info object of a row.
511 *
512 * \param row Pointer to a row in the audio file table.
513 * \param obj Result pointer.
514 *
515 * \return Standard.
516 */
517 static int get_afsi_object_of_row(const struct osl_row *row,
518 struct osl_object *obj)
519 {
520 return osl(osl_get_object(audio_file_table, row, AFTCOL_AFSI, obj));
521 }
522
523 /**
524 * Get the osl object holding the audio file selector info, given a path.
525 *
526 *
527 * \param path The full path of the audio file.
528 * \param obj Result pointer.
529 *
530 * \return Positive on success, negative on errors.
531 */
532 static int get_afsi_object_of_path(const char *path, struct osl_object *obj)
533 {
534 struct osl_row *row;
535 int ret = aft_get_row_of_path(path, &row);
536 if (ret < 0)
537 return ret;
538 return get_afsi_object_of_row(row, obj);
539 }
540
541 /**
542 * Get the audio file selector info, given a row of the audio file table.
543 *
544 * \param row Pointer to a row in the audio file table.
545 * \param afsi Result pointer.
546 *
547 * \return Positive on success, negative on errors.
548 */
549 int get_afsi_of_row(const struct osl_row *row, struct afs_info *afsi)
550 {
551 struct osl_object obj;
552 int ret = get_afsi_object_of_row(row, &obj);
553 if (ret < 0)
554 return ret;
555 return load_afsi(afsi, &obj);
556 }
557
558 /*
559 * Get the audio file selector info, given the path of an audio table.
560 *
561 * \param path The full path of the audio file.
562 * \param afsi Result pointer.
563 *
564 * \return Standard.
565 */
566 static int get_afsi_of_path(const char *path, struct afs_info *afsi)
567 {
568 struct osl_object obj;
569 int ret = get_afsi_object_of_path(path, &obj);
570 if (ret < 0)
571 return ret;
572 return load_afsi(afsi, &obj);
573 }
574
575 /**
576 * Get the path of an audio file, given a row of the audio file table.
577 *
578 * \param row Pointer to a row in the audio file table.
579 * \param path Result pointer.
580 *
581 * The result is a pointer to mmapped data. The caller must not attempt
582 * to free it.
583 *
584 * \return Standard.
585 */
586 int get_audio_file_path_of_row(const struct osl_row *row, char **path)
587 {
588 struct osl_object path_obj;
589 int ret = osl(osl_get_object(audio_file_table, row, AFTCOL_PATH,
590 &path_obj));
591 if (ret < 0)
592 return ret;
593 *path = path_obj.data;
594 return 1;
595 }
596
597 /**
598 * Get the object containing the hash value of an audio file, given a row.
599 *
600 * \param row Pointer to a row of the audio file table.
601 * \param obj Result pointer.
602 *
603 * \return The return value of the underlying call to osl_get_object().
604 *
605 * \sa get_hash_of_row().
606 */
607 static int get_hash_object_of_aft_row(const struct osl_row *row,
608 struct osl_object *obj)
609 {
610 return osl(osl_get_object(audio_file_table, row, AFTCOL_HASH, obj));
611 }
612
613 /**
614 * Get the hash value of an audio file, given a row of the audio file table.
615 *
616 * \param row Pointer to a row of the audio file table.
617 * \param hash Result pointer.
618 *
619 * \a hash points to mapped data and must not be freed by the caller.
620 *
621 * \return The return value of the underlying call to
622 * get_hash_object_of_aft_row().
623 */
624 static int get_hash_of_row(const struct osl_row *row, unsigned char **hash)
625 {
626 struct osl_object obj;
627 int ret = get_hash_object_of_aft_row(row, &obj);
628
629 if (ret < 0)
630 return ret;
631 *hash = obj.data;
632 return 1;
633 }
634
635 /**
636 * Get the audio format handler info, given a row of the audio file table.
637 *
638 * \param row Pointer to a row of the audio file table.
639 * \param afhi Result pointer.
640 *
641 * \return The return value of the underlying call to osl_get_object().
642 *
643 * \sa get_chunk_table_of_row().
644 */
645 int get_afhi_of_row(const struct osl_row *row, struct afh_info *afhi)
646 {
647 struct osl_object obj;
648 int ret = osl(osl_get_object(audio_file_table, row, AFTCOL_AFHI,
649 &obj));
650 if (ret < 0)
651 return ret;
652 load_afhi(obj.data, afhi);
653 return 1;
654 }
655
656 /* returns shmid on success */
657 static int save_afd(struct audio_file_data *afd)
658 {
659 size_t size = sizeof(*afd) + sizeof_chunk_table(&afd->afhi);
660 int shmid, ret = shm_new(size);
661 void *shm_afd;
662 char *buf;
663
664 if (ret < 0)
665 return ret;
666 shmid = ret;
667 ret = shm_attach(shmid, ATTACH_RW, &shm_afd);
668 if (ret < 0)
669 goto err;
670 buf = shm_afd;
671 buf += sizeof(*afd);
672 afd->max_chunk_size = save_chunk_table(&afd->afhi, buf);
673 *(struct audio_file_data *)shm_afd = *afd;
674 shm_detach(shm_afd);
675 return shmid;
676 err:
677 shm_destroy(shmid);
678 return ret;
679 }
680
681 /**
682 * Extract a afd stored in a shared memory area.
683 *
684 * Attach the shared memory area given by \a shmid, load the audio file data
685 * stored therein and detach the area afterwards. Called by vss, after
686 * receiving a positive response to the request for the next audio file.
687 +
688 * \param shmid The identifier of the shared memory area containing the afd.
689 * \param afd Result pointer.
690 *
691 * \return Standard.
692 */
693 int load_afd(int shmid, struct audio_file_data *afd)
694 {
695 void *shm_afd;
696 char *buf;
697 int ret;
698
699 ret = shm_attach(shmid, ATTACH_RO, &shm_afd);
700 if (ret < 0)
701 return ret;
702 *afd = *(struct audio_file_data *)shm_afd;
703 buf = shm_afd;
704 buf += sizeof(*afd);
705 load_chunk_table(&afd->afhi, buf);
706 shm_detach(shm_afd);
707 return 1;
708 }
709
710 static int get_local_time(uint64_t *seconds, char *buf, size_t size,
711 time_t current_time, enum ls_listing_mode lm)
712 {
713 struct tm t;
714
715 if (!localtime_r((time_t *)seconds, &t))
716 return -E_LOCALTIME;
717 if (lm == LS_MODE_MBOX) {
718 if (!strftime(buf, size, "%c", &t))
719 return -E_STRFTIME;
720 return 1;
721 }
722 if (*seconds + 6 * 30 * 24 * 3600 > current_time) {
723 if (!strftime(buf, size, "%b %e %k:%M", &t))
724 return -E_STRFTIME;
725 return 1;
726 }
727 if (!strftime(buf, size, "%b %e %Y", &t))
728 return -E_STRFTIME;
729 return 1;
730 }
731
732 /** Compute the number of (decimal) digits of a number. */
733 #define GET_NUM_DIGITS(x, num) { \
734 typeof((x)) _tmp = PARA_ABS(x); \
735 *num = 1; \
736 if ((_tmp)) \
737 while ((_tmp) > 9) { \
738 (_tmp) /= 10; \
739 (*num)++; \
740 } \
741 }
742
743 __a_const static short unsigned get_duration_width(int seconds)
744 {
745 short unsigned width;
746 unsigned hours = seconds / 3600, mins = (seconds % 3600) / 60;
747
748 if (!hours) /* less than one hour => m:ss or mm:ss => 4 or 5 digits */
749 return 4 + (mins > 9);
750 /* more than one hour => h:mm:ss, hh:mm:ss, hhh:mm:ss, ... */
751 GET_NUM_DIGITS(hours, &width);
752 return width + 6;
753 }
754
755 static void get_duration_buf(int seconds, char *buf, struct ls_options *opts)
756 {
757 unsigned hours = seconds / 3600, mins = (seconds % 3600) / 60;
758 short unsigned max_width;
759
760 if (!hours) { /* m:ss or mm:ss */
761 max_width = opts->mode == LS_MODE_LONG?
762 opts->widths.duration_width : 4;
763 sprintf(buf, "%*u:%02u", max_width - 3, mins, seconds % 60);
764 } else { /* more than one hour => h:mm:ss, hh:mm:ss, hhh:mm:ss, ... */
765 max_width = opts->mode == LS_MODE_LONG?
766 opts->widths.duration_width : 7;
767 sprintf(buf, "%*u:%02u:%02u", max_width - 6, hours, mins,
768 seconds % 60);
769 }
770 }
771
772 static int write_attribute_items(struct para_buffer *b,
773 const char *att_bitmap, struct afs_info *afsi)
774 {
775 char *att_text;
776 int ret;
777
778 ret = WRITE_STATUS_ITEM(b, SI_ATTRIBUTES_BITMAP, "%s\n", att_bitmap);
779 if (ret < 0)
780 return ret;
781 ret = get_attribute_text(&afsi->attributes, " ", &att_text);
782 if (ret < 0)
783 return ret;
784 ret = WRITE_STATUS_ITEM(b, SI_ATTRIBUTES_TXT, "%s\n", att_text);
785 free(att_text);
786 return ret;
787 }
788
789 static int write_lyrics_items(struct para_buffer *b, struct afs_info *afsi)
790 {
791 char *lyrics_name;
792 int ret;
793
794 ret = WRITE_STATUS_ITEM(b, SI_LYRICS_ID, "%u\n", afsi->lyrics_id);
795 if (ret < 0)
796 return ret;
797 lyr_get_name_by_id(afsi->lyrics_id, &lyrics_name);
798 return WRITE_STATUS_ITEM(b, SI_LYRICS_NAME, "%s\n", lyrics_name?
799 lyrics_name : "(none)");
800 }
801
802 static int write_image_items(struct para_buffer *b, struct afs_info *afsi)
803 {
804 char *image_name;
805 int ret;
806
807 ret = WRITE_STATUS_ITEM(b, SI_IMAGE_ID, "%u\n", afsi->image_id);
808 if (ret < 0)
809 return ret;
810 img_get_name_by_id(afsi->image_id, &image_name);
811 return WRITE_STATUS_ITEM(b, SI_IMAGE_NAME, "%s\n", image_name?
812 image_name : "(none)");
813 }
814
815 static int write_filename_items(struct para_buffer *b, const char *path,
816 unsigned flags)
817 {
818 char *val;
819 int ret;
820
821 if (!(flags & LS_FLAG_FULL_PATH))
822 return WRITE_STATUS_ITEM(b, SI_BASENAME, "%s\n", path);
823 ret = WRITE_STATUS_ITEM(b, SI_PATH, "%s\n", path);
824 if (ret < 0)
825 return ret;
826 val = para_basename(path);
827 ret = WRITE_STATUS_ITEM(b, SI_BASENAME, "%s\n", val? val : "");
828 if (ret < 0)
829 return ret;
830 val = para_dirname(path);
831 ret = WRITE_STATUS_ITEM(b, SI_DIRECTORY, "%s\n", val? val : "");
832 free(val);
833 return ret;
834 }
835
836 static int print_chunk_table(struct ls_data *d, struct para_buffer *b)
837 {
838 struct osl_object chunk_table_obj;
839 struct osl_row *aft_row;
840 int ret, i;
841 char *buf;
842
843 ret = aft_get_row_of_hash(d->hash, &aft_row);
844 if (ret < 0)
845 return ret;
846 ret = osl(osl_open_disk_object(audio_file_table, aft_row,
847 AFTCOL_CHUNKS, &chunk_table_obj));
848 if (ret < 0)
849 return ret;
850 ret = para_printf(b, "%s\n"
851 "chunk_time: %lu:%lu\nchunk_offsets: ",
852 d->path,
853 (long unsigned) d->afhi.chunk_tv.tv_sec,
854 (long unsigned) d->afhi.chunk_tv.tv_usec
855 );
856 if (ret < 0)
857 goto out;
858 buf = chunk_table_obj.data;
859 for (i = 0; i <= d->afhi.chunks_total; i++) {
860 ret = para_printf(b, "%u ", (unsigned) read_u32(buf + 4 * i));
861 if (ret < 0)
862 goto out;
863 }
864 ret = para_printf(b, "\n");
865 out:
866 osl_close_disk_object(&chunk_table_obj);
867 return ret;
868 }
869
870 static int write_score(struct para_buffer *b, struct ls_data *d,
871 struct ls_options *opts)
872 {
873 if (!(opts->flags & LS_FLAG_ADMISSIBLE_ONLY)) /* no score*/
874 return 0;
875 return WRITE_STATUS_ITEM(b, SI_SCORE, "%li\n", d->score);
876 }
877
878 static int print_list_item(struct ls_data *d, struct ls_options *opts,
879 struct para_buffer *b, time_t current_time)
880 {
881 int ret;
882 char att_buf[65];
883 char last_played_time[30];
884 char duration_buf[30]; /* nobody has an audio file long enough to overflow this */
885 struct afs_info *afsi = &d->afsi;
886 struct afh_info *afhi = &d->afhi;
887 char asc_hash[2 * HASH_SIZE + 1];
888
889 if (opts->mode == LS_MODE_SHORT) {
890 ret = para_printf(b, "%s\n", d->path);
891 goto out;
892 }
893 if (opts->mode == LS_MODE_CHUNKS) {
894 ret = print_chunk_table(d, b);
895 goto out;
896 }
897 get_attribute_bitmap(&afsi->attributes, att_buf);
898 if (opts->flags & LS_FLAG_UNIXDATE)
899 sprintf(last_played_time, "%llu",
900 (long long unsigned)afsi->last_played);
901 else {
902 ret = get_local_time(&afsi->last_played, last_played_time,
903 sizeof(last_played_time), current_time, opts->mode);
904 if (ret < 0)
905 goto out;
906 }
907 get_duration_buf(afhi->seconds_total, duration_buf, opts);
908 if (opts->mode == LS_MODE_LONG) {
909 struct ls_widths *w = &opts->widths;
910 if (opts->flags & LS_FLAG_ADMISSIBLE_ONLY) {
911 ret = para_printf(b, "%*li ",
912 opts->widths.score_width, d->score);
913 if (ret < 0)
914 goto out;
915 }
916 ret = para_printf(b,
917 "%s " /* attributes */
918 "%*u " /* amp */
919 "%*d " /* image_id */
920 "%*d " /* lyrics_id */
921 "%*d " /* bitrate */
922 "%*s " /* audio format */
923 "%*d " /* frequency */
924 "%d " /* channels */
925 "%s " /* duration */
926 "%*d " /* num_played */
927 "%s " /* last_played */
928 "%s\n", /* path */
929 att_buf,
930 w->amp_width, afsi->amp,
931 w->image_id_width, afsi->image_id,
932 w->lyrics_id_width, afsi->lyrics_id,
933 w->bitrate_width, afhi->bitrate,
934 w->audio_format_width,
935 audio_format_name(afsi->audio_format_id),
936 w->frequency_width, afhi->frequency,
937 afhi->channels,
938 duration_buf,
939 w->num_played_width, afsi->num_played,
940 last_played_time,
941 d->path
942 );
943 goto out;
944 }
945 if (opts->mode == LS_MODE_MBOX) {
946 const char *bn = para_basename(d->path);
947 ret = para_printf(b,
948 "From foo@localhost %s\n"
949 "Received: from\nTo: bar\nFrom: a\n"
950 "Subject: %s\n\n",
951 last_played_time,
952 bn? bn : "?");
953 if (ret < 0)
954 goto out;
955 }
956 ret = write_filename_items(b, d->path, opts->flags);
957 if (ret < 0)
958 goto out;
959 ret = write_score(b, d, opts);
960 if (ret < 0)
961 goto out;
962 ret = write_attribute_items(b, att_buf, afsi);
963 if (ret < 0)
964 goto out;
965 ret = write_image_items(b, afsi);
966 if (ret < 0)
967 goto out;
968 ret = write_lyrics_items(b, afsi);
969 if (ret < 0)
970 goto out;
971 hash_to_asc(d->hash, asc_hash);
972 ret = WRITE_STATUS_ITEM(b, SI_HASH, "%s\n", asc_hash);
973 if (ret < 0)
974 goto out;
975 ret = WRITE_STATUS_ITEM(b, SI_BITRATE, "%dkbit/s\n", afhi->bitrate);
976 if (ret < 0)
977 goto out;
978 ret = WRITE_STATUS_ITEM(b, SI_FORMAT, "%s\n",
979 audio_format_name(afsi->audio_format_id));
980 if (ret < 0)
981 goto out;
982 ret = WRITE_STATUS_ITEM(b, SI_FREQUENCY, "%dHz\n", afhi->frequency);
983 if (ret < 0)
984 goto out;
985 ret = WRITE_STATUS_ITEM(b, SI_CHANNELS, "%d\n", afhi->channels);
986 if (ret < 0)
987 goto out;
988 ret = WRITE_STATUS_ITEM(b, SI_DURATION, "%s\n", duration_buf);
989 if (ret < 0)
990 goto out;
991 ret = WRITE_STATUS_ITEM(b, SI_SECONDS_TOTAL, "%lu\n",
992 afhi->seconds_total);
993 if (ret < 0)
994 goto out;
995 ret = WRITE_STATUS_ITEM(b, SI_LAST_PLAYED, "%s\n", last_played_time);
996 if (ret < 0)
997 goto out;
998 ret = WRITE_STATUS_ITEM(b, SI_NUM_PLAYED, "%d\n", afsi->num_played);
999 if (ret < 0)
1000 goto out;
1001 ret = WRITE_STATUS_ITEM(b, SI_AMPLIFICATION, "%u\n", afsi->amp);
1002 if (ret < 0)
1003 goto out;
1004 ret = WRITE_STATUS_ITEM(b, SI_CHUNK_TIME, "%lu\n",
1005 tv2ms(&afhi->chunk_tv));
1006 if (ret < 0)
1007 goto out;
1008 ret = WRITE_STATUS_ITEM(b, SI_NUM_CHUNKS, "%lu\n",
1009 afhi->chunks_total);
1010 if (ret < 0)
1011 goto out;
1012 ret = WRITE_STATUS_ITEM(b, SI_TECHINFO, "%s\n", afhi->techinfo);
1013 if (ret < 0)
1014 goto out;
1015 ret = WRITE_STATUS_ITEM(b, SI_ARTIST, "%s\n", afhi->tags.artist);
1016 if (ret < 0)
1017 goto out;
1018 ret = WRITE_STATUS_ITEM(b, SI_TITLE, "%s\n", afhi->tags.title);
1019 if (ret < 0)
1020 goto out;
1021 ret = WRITE_STATUS_ITEM(b, SI_YEAR, "%s\n", afhi->tags.year);
1022 if (ret < 0)
1023 goto out;
1024 ret = WRITE_STATUS_ITEM(b, SI_ALBUM, "%s\n", afhi->tags.album);
1025 if (ret < 0)
1026 goto out;
1027 ret = WRITE_STATUS_ITEM(b, SI_COMMENT, "%s\n", afhi->tags.comment);
1028 if (ret < 0)
1029 goto out;
1030 if (opts->mode == LS_MODE_MBOX) {
1031 struct osl_object lyrics_def;
1032 lyr_get_def_by_id(afsi->lyrics_id, &lyrics_def);
1033 if (lyrics_def.data) {
1034 ret = para_printf(b, "Lyrics:\n~~~~~~~\n%s",
1035 (char *)lyrics_def.data);
1036 osl_close_disk_object(&lyrics_def);
1037 }
1038 }
1039 out:
1040 return ret;
1041 }
1042
1043 static int make_status_items(struct audio_file_data *afd,
1044 struct afs_info *afsi, char *path, long score,
1045 unsigned char *hash)
1046 {
1047 struct ls_data d = {
1048 .afhi = afd->afhi,
1049 .afsi = *afsi,
1050 .path = path,
1051 .score = score,
1052 .hash = hash
1053 };
1054 struct ls_options opts = {
1055 .flags = LS_FLAG_FULL_PATH | LS_FLAG_ADMISSIBLE_ONLY,
1056 .mode = LS_MODE_VERBOSE,
1057 };
1058 struct para_buffer pb = {.max_size = shm_get_shmmax() - 1};
1059 time_t current_time;
1060 int ret;
1061
1062 time(&current_time);
1063 ret = print_list_item(&d, &opts, &pb, current_time);
1064 if (ret < 0)
1065 return ret;
1066 free(status_items);
1067 status_items = pb.buf;
1068 memset(&pb, 0, sizeof(pb));
1069 pb.max_size = shm_get_shmmax() - 1;
1070 pb.flags = PBF_SIZE_PREFIX;
1071 ret = print_list_item(&d, &opts, &pb, current_time);
1072 if (ret < 0) {
1073 free(status_items);
1074 status_items = NULL;
1075 return ret;
1076 }
1077 free(parser_friendly_status_items);
1078 parser_friendly_status_items = pb.buf;
1079 return 1;
1080 }
1081
1082 /**
1083 * Open the audio file with highest score and set up an afd structure.
1084 *
1085 * \param afd Result pointer.
1086 *
1087 * On success, the numplayed field of the audio file selector info is increased
1088 * and the lastplayed time is set to the current time. Finally, the score of
1089 * the audio file is updated.
1090 *
1091 * \return Positive shmid on success, negative on errors.
1092 */
1093 int open_and_update_audio_file(struct audio_file_data *afd)
1094 {
1095 struct osl_row *aft_row;
1096 long score;
1097 unsigned char *aft_hash, file_hash[HASH_SIZE];
1098 struct osl_object afsi_obj;
1099 struct afs_info old_afsi, new_afsi;
1100 int ret;
1101 struct afsi_change_event_data aced;
1102 struct osl_object map, chunk_table_obj;
1103 char *path;
1104 again:
1105 ret = score_get_best(&aft_row, &score);
1106 if (ret < 0)
1107 return ret;
1108 ret = get_hash_of_row(aft_row, &aft_hash);
1109 if (ret < 0)
1110 return ret;
1111 ret = get_audio_file_path_of_row(aft_row, &path);
1112 if (ret < 0)
1113 return ret;
1114 PARA_NOTICE_LOG("%s\n", path);
1115 ret = get_afsi_object_of_row(aft_row, &afsi_obj);
1116 if (ret < 0)
1117 return ret;
1118 ret = load_afsi(&old_afsi, &afsi_obj);
1119 if (ret < 0)
1120 return ret;
1121 ret = get_afhi_of_row(aft_row, &afd->afhi);
1122 if (ret < 0)
1123 return ret;
1124 afd->afhi.chunk_table = NULL;
1125 ret = osl(osl_open_disk_object(audio_file_table, aft_row,
1126 AFTCOL_CHUNKS, &chunk_table_obj));
1127 if (ret < 0)
1128 return ret;
1129 ret = mmap_full_file(path, O_RDONLY, &map.data, &map.size, &afd->fd);
1130 if (ret < 0)
1131 goto err;
1132 hash_function(map.data, map.size, file_hash);
1133 ret = hash_compare(file_hash, aft_hash);
1134 para_munmap(map.data, map.size);
1135 if (ret) {
1136 ret = -E_HASH_MISMATCH;
1137 goto err;
1138 }
1139 new_afsi = old_afsi;
1140 new_afsi.num_played++;
1141 new_afsi.last_played = time(NULL);
1142 save_afsi(&new_afsi, &afsi_obj); /* in-place update */
1143
1144 afd->audio_format_id = old_afsi.audio_format_id;
1145 load_chunk_table(&afd->afhi, chunk_table_obj.data);
1146 ret = make_status_items(afd, &old_afsi, path, score, file_hash);
1147 if (ret < 0)
1148 goto err;
1149 aced.aft_row = aft_row;
1150 aced.old_afsi = &old_afsi;
1151 afs_event(AFSI_CHANGE, NULL, &aced);
1152 ret = save_afd(afd);
1153 err:
1154 free(afd->afhi.chunk_table);
1155 osl_close_disk_object(&chunk_table_obj);
1156 if (ret < 0) {
1157 PARA_ERROR_LOG("%s: %s\n", path, para_strerror(-ret));
1158 ret = score_delete(aft_row);
1159 if (ret >= 0)
1160 goto again;
1161 }
1162 return ret;
1163 }
1164
1165 static int ls_audio_format_compare(const void *a, const void *b)
1166 {
1167 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1168 return NUM_COMPARE(d1->afsi.audio_format_id, d2->afsi.audio_format_id);
1169 }
1170
1171 static int ls_duration_compare(const void *a, const void *b)
1172 {
1173 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1174 return NUM_COMPARE(d1->afhi.seconds_total, d2->afhi.seconds_total);
1175 }
1176
1177 static int ls_bitrate_compare(const void *a, const void *b)
1178 {
1179 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1180 return NUM_COMPARE(d1->afhi.bitrate, d2->afhi.bitrate);
1181 }
1182
1183 static int ls_lyrics_id_compare(const void *a, const void *b)
1184 {
1185 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1186 return NUM_COMPARE(d1->afsi.lyrics_id, d2->afsi.lyrics_id);
1187 }
1188
1189 static int ls_image_id_compare(const void *a, const void *b)
1190 {
1191 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1192 return NUM_COMPARE(d1->afsi.image_id, d2->afsi.image_id);
1193 }
1194
1195 static int ls_channels_compare(const void *a, const void *b)
1196 {
1197 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1198 return NUM_COMPARE(d1->afhi.channels, d2->afhi.channels);
1199 }
1200
1201 static int ls_frequency_compare(const void *a, const void *b)
1202 {
1203 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1204 return NUM_COMPARE(d1->afhi.frequency, d2->afhi.frequency);
1205 }
1206
1207 static int ls_num_played_compare(const void *a, const void *b)
1208 {
1209 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1210 return NUM_COMPARE(d1->afsi.num_played, d2->afsi.num_played);
1211 }
1212
1213 static int ls_last_played_compare(const void *a, const void *b)
1214 {
1215 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1216 return NUM_COMPARE(d1->afsi.last_played, d2->afsi.last_played);
1217 }
1218
1219 static int ls_score_compare(const void *a, const void *b)
1220 {
1221 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1222 return NUM_COMPARE(d1->score, d2->score);
1223 }
1224
1225 static int ls_path_compare(const void *a, const void *b)
1226 {
1227 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1228 return strcmp(d1->path, d2->path);
1229 }
1230
1231 static int sort_matching_paths(struct ls_options *options)
1232 {
1233 size_t nmemb = options->num_matching_paths;
1234 size_t size = sizeof(*options->data_ptr);
1235 int (*compar)(const void *, const void *);
1236 int i;
1237
1238 options->data_ptr = para_malloc(nmemb * sizeof(*options->data_ptr));
1239 for (i = 0; i < nmemb; i++)
1240 options->data_ptr[i] = options->data + i;
1241
1242 /* In these cases the array is already sorted */
1243 if (options->sorting == LS_SORT_BY_PATH
1244 && !(options->flags & LS_FLAG_ADMISSIBLE_ONLY)
1245 && (options->flags & LS_FLAG_FULL_PATH))
1246 return 1;
1247 if (options->sorting == LS_SORT_BY_SCORE &&
1248 options->flags & LS_FLAG_ADMISSIBLE_ONLY)
1249 return 1;
1250
1251 switch (options->sorting) {
1252 case LS_SORT_BY_PATH:
1253 compar = ls_path_compare; break;
1254 case LS_SORT_BY_SCORE:
1255 compar = ls_score_compare; break;
1256 case LS_SORT_BY_LAST_PLAYED:
1257 compar = ls_last_played_compare; break;
1258 case LS_SORT_BY_NUM_PLAYED:
1259 compar = ls_num_played_compare; break;
1260 case LS_SORT_BY_FREQUENCY:
1261 compar = ls_frequency_compare; break;
1262 case LS_SORT_BY_CHANNELS:
1263 compar = ls_channels_compare; break;
1264 case LS_SORT_BY_IMAGE_ID:
1265 compar = ls_image_id_compare; break;
1266 case LS_SORT_BY_LYRICS_ID:
1267 compar = ls_lyrics_id_compare; break;
1268 case LS_SORT_BY_BITRATE:
1269 compar = ls_bitrate_compare; break;
1270 case LS_SORT_BY_DURATION:
1271 compar = ls_duration_compare; break;
1272 case LS_SORT_BY_AUDIO_FORMAT:
1273 compar = ls_audio_format_compare; break;
1274 default:
1275 return -E_BAD_SORT;
1276 }
1277 qsort(options->data_ptr, nmemb, size, compar);
1278 return 1;
1279 }
1280
1281 /* row is either an aft_row or a row of the score table */
1282 /* TODO: Only compute widths if we need them */
1283 static int prepare_ls_row(struct osl_row *row, void *ls_opts)
1284 {
1285 int ret, i;
1286 struct ls_options *options = ls_opts;
1287 struct ls_data *d;
1288 struct ls_widths *w;
1289 unsigned short num_digits;
1290 unsigned tmp;
1291 struct osl_row *aft_row;
1292 long score;
1293 char *path;
1294
1295 if (options->flags & LS_FLAG_ADMISSIBLE_ONLY) {
1296 ret = get_score_and_aft_row(row, &score, &aft_row);
1297 if (ret < 0)
1298 return ret;
1299 } else {
1300 aft_row = row;
1301 score = 0;
1302 }
1303 ret = get_audio_file_path_of_row(aft_row, &path);
1304 if (ret < 0)
1305 return ret;
1306 if (!(options->flags & LS_FLAG_FULL_PATH)) {
1307 char *p = strrchr(path, '/');
1308 if (p)
1309 path = p + 1;
1310 }
1311 if (options->num_patterns) {
1312 for (i = 0; i < options->num_patterns; i++) {
1313 ret = fnmatch(options->patterns[i], path, 0);
1314 if (!ret)
1315 break;
1316 if (ret == FNM_NOMATCH)
1317 continue;
1318 return -E_FNMATCH;
1319 }
1320 if (i >= options->num_patterns) /* no match */
1321 return 1;
1322 }
1323 tmp = options->num_matching_paths++;
1324 if (options->num_matching_paths > options->array_size) {
1325 options->array_size++;
1326 options->array_size *= 2;
1327 options->data = para_realloc(options->data, options->array_size
1328 * sizeof(*options->data));
1329 }
1330 d = options->data + tmp;
1331 ret = get_afsi_of_row(aft_row, &d->afsi);
1332 if (ret < 0)
1333 return ret;
1334 ret = get_afhi_of_row(aft_row, &d->afhi);
1335 if (ret < 0)
1336 return ret;
1337 d->path = path;
1338 ret = get_hash_of_row(aft_row, &d->hash);
1339 if (ret < 0)
1340 goto err;
1341 w = &options->widths;
1342 GET_NUM_DIGITS(d->afsi.image_id, &num_digits);
1343 w->image_id_width = PARA_MAX(w->image_id_width, num_digits);
1344 GET_NUM_DIGITS(d->afsi.lyrics_id, &num_digits);
1345 w->lyrics_id_width = PARA_MAX(w->lyrics_id_width, num_digits);
1346 GET_NUM_DIGITS(d->afhi.bitrate, &num_digits);
1347 w->bitrate_width = PARA_MAX(w->bitrate_width, num_digits);
1348 GET_NUM_DIGITS(d->afhi.frequency, &num_digits);
1349 w->frequency_width = PARA_MAX(w->frequency_width, num_digits);
1350 GET_NUM_DIGITS(d->afsi.num_played, &num_digits);
1351 w->num_played_width = PARA_MAX(w->num_played_width, num_digits);
1352 /* get the number of chars to print this amount of time */
1353 num_digits = get_duration_width(d->afhi.seconds_total);
1354 w->duration_width = PARA_MAX(w->duration_width, num_digits);
1355 GET_NUM_DIGITS(d->afsi.amp, &num_digits);
1356 w->amp_width = PARA_MAX(w->amp_width, num_digits);
1357 num_digits = strlen(audio_format_name(d->afsi.audio_format_id));
1358 w->audio_format_width = PARA_MAX(w->audio_format_width, num_digits);
1359 if (options->flags & LS_FLAG_ADMISSIBLE_ONLY) {
1360 GET_NUM_DIGITS(score, &num_digits);
1361 num_digits++; /* add one for the sign (space or "-") */
1362 w->score_width = PARA_MAX(w->score_width, num_digits);
1363 d->score = score;
1364 }
1365 return 1;
1366 err:
1367 return ret;
1368 }
1369
1370 static void com_ls_callback(int fd, const struct osl_object *query)
1371 {
1372 struct ls_options *opts = query->data;
1373 char *p, *pattern_start = (char *)query->data + sizeof(*opts);
1374 struct para_buffer b = {
1375 .max_size = shm_get_shmmax(),
1376 .flags = (opts->mode == LS_MODE_PARSER)? PBF_SIZE_PREFIX : 0,
1377 .max_size_handler = afs_max_size_handler,
1378 .private_data = &(struct afs_max_size_handler_data) {
1379 .fd = fd,
1380 .band = SBD_OUTPUT
1381 }
1382 };
1383 int i = 0, ret;
1384 time_t current_time;
1385
1386 if (opts->num_patterns) {
1387 opts->patterns = para_malloc(opts->num_patterns * sizeof(char *));
1388 for (i = 0, p = pattern_start; i < opts->num_patterns; i++) {
1389 opts->patterns[i] = p;
1390 p += strlen(p) + 1;
1391 }
1392 } else
1393 opts->patterns = NULL;
1394 if (opts->flags & LS_FLAG_ADMISSIBLE_ONLY)
1395 ret = admissible_file_loop(opts, prepare_ls_row);
1396 else
1397 ret = osl(osl_rbtree_loop(audio_file_table, AFTCOL_PATH, opts,
1398 prepare_ls_row));
1399 if (ret < 0)
1400 goto out;
1401 if (opts->num_matching_paths == 0) {
1402 if (opts->num_patterns > 0)
1403 para_printf(&b, "no matches\n");
1404 goto out;
1405 }
1406 ret = sort_matching_paths(opts);
1407 if (ret < 0)
1408 goto out;
1409 time(&current_time);
1410 if (opts->flags & LS_FLAG_REVERSE)
1411 for (i = opts->num_matching_paths - 1; i >= 0; i--) {
1412 ret = print_list_item(opts->data_ptr[i], opts, &b, current_time);
1413 if (ret < 0)
1414 goto out;
1415 }
1416 else
1417 for (i = 0; i < opts->num_matching_paths; i++) {
1418 ret = print_list_item(opts->data_ptr[i], opts, &b, current_time);
1419 if (ret < 0)
1420 goto out;
1421 }
1422 out:
1423 if (b.offset)
1424 pass_buffer_as_shm(fd, SBD_OUTPUT, b.buf, b.offset);
1425 free(b.buf);
1426 free(opts->data);
1427 free(opts->data_ptr);
1428 free(opts->patterns);
1429 }
1430
1431 /*
1432 * TODO: flags -h (sort by hash)
1433 */
1434 int com_ls(struct command_context *cc)
1435 {
1436 int i, ret;
1437 unsigned flags = 0;
1438 enum ls_sorting_method sort = LS_SORT_BY_PATH;
1439 enum ls_listing_mode mode = LS_MODE_SHORT;
1440 struct ls_options opts = {.patterns = NULL};
1441 struct osl_object query = {.data = &opts, .size = sizeof(opts)};
1442
1443 for (i = 1; i < cc->argc; i++) {
1444 const char *arg = cc->argv[i];
1445 if (arg[0] != '-')
1446 break;
1447 if (!strcmp(arg, "--")) {
1448 i++;
1449 break;
1450 }
1451 if (!strncmp(arg, "-l", 2)) {
1452 if (!*(arg + 2)) {
1453 mode = LS_MODE_LONG;
1454 continue;
1455 }
1456 if (*(arg + 3))
1457 return -E_AFT_SYNTAX;
1458 switch(*(arg + 2)) {
1459 case 's':
1460 mode = LS_MODE_SHORT;
1461 continue;
1462 case 'l':
1463 mode = LS_MODE_LONG;
1464 continue;
1465 case 'v':
1466 mode = LS_MODE_VERBOSE;
1467 continue;
1468 case 'm':
1469 mode = LS_MODE_MBOX;
1470 continue;
1471 case 'c':
1472 mode = LS_MODE_CHUNKS;
1473 continue;
1474 case 'p':
1475 mode = LS_MODE_PARSER;
1476 continue;
1477 default:
1478 return -E_AFT_SYNTAX;
1479 }
1480 }
1481 if (!strcmp(arg, "-p")) {
1482 flags |= LS_FLAG_FULL_PATH;
1483 continue;
1484 }
1485 if (!strcmp(arg, "-a")) {
1486 flags |= LS_FLAG_ADMISSIBLE_ONLY;
1487 continue;
1488 }
1489 if (!strcmp(arg, "-r")) {
1490 flags |= LS_FLAG_REVERSE;
1491 continue;
1492 }
1493 if (!strcmp(arg, "-d")) {
1494 flags |= LS_FLAG_UNIXDATE;
1495 continue;
1496 }
1497 if (!strncmp(arg, "-s", 2)) {
1498 if (!*(arg + 2) || *(arg + 3))
1499 return -E_AFT_SYNTAX;
1500 switch(*(arg + 2)) {
1501 case 'p':
1502 sort = LS_SORT_BY_PATH;
1503 continue;
1504 case 's': /* -ss implies -a */
1505 sort = LS_SORT_BY_SCORE;
1506 flags |= LS_FLAG_ADMISSIBLE_ONLY;
1507 continue;
1508 case 'l':
1509 sort = LS_SORT_BY_LAST_PLAYED;
1510 continue;
1511 case 'n':
1512 sort = LS_SORT_BY_NUM_PLAYED;
1513 continue;
1514 case 'f':
1515 sort = LS_SORT_BY_FREQUENCY;
1516 continue;
1517 case 'c':
1518 sort = LS_SORT_BY_CHANNELS;
1519 continue;
1520 case 'i':
1521 sort = LS_SORT_BY_IMAGE_ID;
1522 continue;
1523 case 'y':
1524 sort = LS_SORT_BY_LYRICS_ID;
1525 continue;
1526 case 'b':
1527 sort = LS_SORT_BY_BITRATE;
1528 continue;
1529 case 'd':
1530 sort = LS_SORT_BY_DURATION;
1531 continue;
1532 case 'a':
1533 sort = LS_SORT_BY_AUDIO_FORMAT;
1534 continue;
1535 default:
1536 return -E_AFT_SYNTAX;
1537 }
1538 }
1539 return -E_AFT_SYNTAX;
1540 }
1541 opts.flags = flags;
1542 opts.sorting = sort;
1543 opts.mode = mode;
1544 opts.num_patterns = cc->argc - i;
1545 ret = send_option_arg_callback_request(&query, opts.num_patterns,
1546 cc->argv + i, com_ls_callback, afs_cb_result_handler, cc);
1547 return ret;
1548 }
1549
1550 /**
1551 * Call the given function for each file in the audio file table.
1552 *
1553 * \param private_data An arbitrary data pointer, passed to \a func.
1554 * \param func The custom function to be called.
1555 *
1556 * \return Standard.
1557 */
1558 int audio_file_loop(void *private_data, osl_rbtree_loop_func *func)
1559 {
1560 return osl(osl_rbtree_loop(audio_file_table, AFTCOL_HASH, private_data,
1561 func));
1562 }
1563
1564 static struct osl_row *find_hash_sister(unsigned char *hash)
1565 {
1566 const struct osl_object obj = {.data = hash, .size = HASH_SIZE};
1567 struct osl_row *row;
1568
1569 osl_get_row(audio_file_table, AFTCOL_HASH, &obj, &row);
1570 return row;
1571 }
1572
1573 /** The format of the data stored by save_audio_file_data(). */
1574 enum com_add_buffer_offsets {
1575 /** afhi (if present) starts here. */
1576 CAB_AFHI_OFFSET_POS = 0,
1577 /** Start of the chunk table (if present). */
1578 CAB_CHUNKS_OFFSET_POS = 2,
1579 /** Audio format id. */
1580 CAB_AUDIO_FORMAT_OFFSET = 4,
1581 /** Flags given to the add command. */
1582 CAB_FLAGS_OFFSET = 5,
1583 /** The hash of the audio file being added. */
1584 CAB_HASH_OFFSET = 9,
1585 /** Start of the path of the audio file. */
1586 CAB_PATH_OFFSET = (CAB_HASH_OFFSET + HASH_SIZE),
1587 };
1588
1589 /*
1590 * Store the given data to a single buffer. Doesn't need the audio file selector
1591 * info struct as the server knows it as well.
1592 *
1593 * It's OK to call this with afhi == NULL. In this case, the audio format
1594 * handler info won't be stored in the buffer.
1595 */
1596 static void save_add_callback_buffer(unsigned char *hash, const char *path,
1597 struct afh_info *afhi, uint32_t flags,
1598 uint8_t audio_format_num, struct osl_object *obj)
1599 {
1600 size_t path_len = strlen(path) + 1;
1601 size_t afhi_size = sizeof_afhi_buf(afhi);
1602 size_t size = CAB_PATH_OFFSET + path_len + afhi_size
1603 + sizeof_chunk_table(afhi);
1604 char *buf = para_malloc(size);
1605 uint16_t pos;
1606
1607 write_u8(buf + CAB_AUDIO_FORMAT_OFFSET, audio_format_num);
1608 write_u32(buf + CAB_FLAGS_OFFSET, flags);
1609
1610 memcpy(buf + CAB_HASH_OFFSET, hash, HASH_SIZE);
1611 strcpy(buf + CAB_PATH_OFFSET, path);
1612
1613 pos = CAB_PATH_OFFSET + path_len;
1614 PARA_DEBUG_LOG("size: %zu, afhi starts at %d\n", size, pos);
1615 PARA_DEBUG_LOG("last afhi byte: %p, pos %zu\n", buf + pos + afhi_size - 1,
1616 pos + afhi_size - 1);
1617 write_u16(buf + CAB_AFHI_OFFSET_POS, pos);
1618 save_afhi(afhi, buf + pos);
1619
1620 pos += afhi_size;
1621 PARA_DEBUG_LOG("size: %zu, chunks start at %d\n", size, pos);
1622 write_u16(buf + CAB_CHUNKS_OFFSET_POS, pos);
1623 if (afhi)
1624 save_chunk_table(afhi, buf + pos);
1625 PARA_DEBUG_LOG("last byte in buf: %p\n", buf + size - 1);
1626 obj->data = buf;
1627 obj->size = size;
1628 }
1629
1630 /*
1631
1632 Overview of the add command.
1633
1634 Input: What was passed to the callback by the command handler.
1635 ~~~~~~
1636 HS: Hash sister. Whether an audio file with identical hash
1637 already exists in the osl database.
1638
1639 PB: Path brother. Whether a file with the given path exists
1640 in the table.
1641
1642 F: Force flag given. Whether add was called with -f.
1643
1644 output: Action performed by the callback.
1645 ~~~~~~~
1646 AFHI: Whether afhi and chunk table are computed and sent.
1647 ACTION: Table modifications to be done by the callback.
1648
1649 +----+----+---+------+---------------------------------------------------+
1650 | HS | PB | F | AFHI | ACTION
1651 +----+----+---+------+---------------------------------------------------+
1652 | Y | Y | Y | Y | if HS != PB: remove PB. HS: force afhi update,
1653 | | update path, keep afsi
1654 +----+----+---+------+---------------------------------------------------+
1655 | Y | Y | N | N | if HS == PB: do not send callback request at all.
1656 | | otherwise: remove PB, HS: update path, keep afhi,
1657 | | afsi.
1658 +----+----+---+------+---------------------------------------------------+
1659 | Y | N | Y | Y | (rename) force afhi update of HS, update path of
1660 | | HS, keep afsi
1661 +----+----+---+------+---------------------------------------------------+
1662 | Y | N | N | N | (file rename) update path of HS, keep afsi, afhi
1663 +----+----+---+------+---------------------------------------------------+
1664 | N | Y | Y | Y | (file change) update afhi, hash, of PB, keep afsi
1665 | | (force has no effect)
1666 +----+----+---+------+---------------------------------------------------+
1667 | N | Y | N | Y | (file change) update afhi, hash of PB, keep afsi
1668 +----+----+---+------+---------------------------------------------------+
1669 | N | N | Y | Y | (new file) create new entry (force has no effect)
1670 +----+----+---+------+---------------------------------------------------+
1671 | N | N | N | Y | (new file) create new entry
1672 +----+----+---+------+---------------------------------------------------+
1673
1674 Notes:
1675
1676 afhi <=> force or no HS
1677 F => AFHI
1678
1679 */
1680
1681 /** Flags passed to the add command. */
1682 enum com_add_flags {
1683 /** Skip paths that exist already. */
1684 ADD_FLAG_LAZY = 1,
1685 /** Force adding. */
1686 ADD_FLAG_FORCE = 2,
1687 /** Print what is being done. */
1688 ADD_FLAG_VERBOSE = 4,
1689 /** Try to add files with unknown suffixes. */
1690 ADD_FLAG_ALL = 8,
1691 };
1692
1693 static void com_add_callback(int fd, const struct osl_object *query)
1694 {
1695 char *buf = query->data, *path;
1696 struct osl_row *pb, *aft_row;
1697 struct osl_row *hs;
1698 struct osl_object objs[NUM_AFT_COLUMNS];
1699 unsigned char *hash;
1700 char asc[2 * HASH_SIZE + 1];
1701 int ret;
1702 char afsi_buf[AFSI_SIZE];
1703 uint32_t flags = read_u32(buf + CAB_FLAGS_OFFSET);
1704 struct afs_info default_afsi = {.last_played = 0};
1705 struct para_buffer msg = {
1706 .max_size = shm_get_shmmax(),
1707 .max_size_handler = afs_max_size_handler,
1708 .private_data = &(struct afs_max_size_handler_data) {
1709 .fd = fd,
1710 .band = SBD_OUTPUT
1711 }
1712 };
1713 uint16_t afhi_offset, chunks_offset;
1714
1715 hash = (unsigned char *)buf + CAB_HASH_OFFSET;
1716 hash_to_asc(hash, asc);
1717 objs[AFTCOL_HASH].data = buf + CAB_HASH_OFFSET;
1718 objs[AFTCOL_HASH].size = HASH_SIZE;
1719
1720 path = buf + CAB_PATH_OFFSET;
1721 objs[AFTCOL_PATH].data = path;
1722 objs[AFTCOL_PATH].size = strlen(path) + 1;
1723
1724 PARA_INFO_LOG("request to add %s\n", path);
1725 hs = find_hash_sister(hash);
1726 ret = aft_get_row_of_path(path, &pb);
1727 if (ret < 0 && ret != -OSL_ERRNO_TO_PARA_ERROR(E_OSL_RB_KEY_NOT_FOUND))
1728 goto out;
1729 if (hs && pb && hs == pb && !(flags & ADD_FLAG_FORCE)) {
1730 if (flags & ADD_FLAG_VERBOSE)
1731 ret = para_printf(&msg, "ignoring duplicate\n");
1732 else
1733 ret = 1;
1734 goto out;
1735 }
1736 if (hs && hs != pb) {
1737 struct osl_object obj;
1738 if (pb) { /* hs trumps pb, remove pb */
1739 if (flags & ADD_FLAG_VERBOSE) {
1740 ret = para_printf(&msg, "removing %s\n", path);
1741 if (ret < 0)
1742 goto out;
1743 }
1744 afs_event(AUDIO_FILE_REMOVE, &msg, pb);
1745 ret = osl(osl_del_row(audio_file_table, pb));
1746 if (ret < 0)
1747 goto out;
1748 pb = NULL;
1749 }
1750 /* file rename, update hs' path */
1751 if (flags & ADD_FLAG_VERBOSE) {
1752 ret = osl(osl_get_object(audio_file_table, hs,
1753 AFTCOL_PATH, &obj));
1754 if (ret < 0)
1755 goto out;
1756 ret = para_printf(&msg, "renamed from %s\n", (char *)obj.data);
1757 if (ret < 0)
1758 goto out;
1759 }
1760 ret = osl(osl_update_object(audio_file_table, hs, AFTCOL_PATH,
1761 &objs[AFTCOL_PATH]));
1762 if (ret < 0)
1763 goto out;
1764 afs_event(AUDIO_FILE_RENAME, &msg, hs);
1765 if (!(flags & ADD_FLAG_FORCE))
1766 goto out;
1767 }
1768 /* no hs or force mode, child must have sent afhi */
1769 afhi_offset = read_u16(buf + CAB_AFHI_OFFSET_POS);
1770 chunks_offset = read_u16(buf + CAB_CHUNKS_OFFSET_POS);
1771
1772 objs[AFTCOL_AFHI].data = buf + afhi_offset;
1773 objs[AFTCOL_AFHI].size = chunks_offset - afhi_offset;
1774 ret = -E_NO_AFHI;
1775 if (!objs[AFTCOL_AFHI].size) /* "impossible" */
1776 goto out;
1777 objs[AFTCOL_CHUNKS].data = buf + chunks_offset;
1778 objs[AFTCOL_CHUNKS].size = query->size - chunks_offset;
1779 if (pb && !hs) { /* update pb's hash */
1780 char old_asc[2 * HASH_SIZE + 1];
1781 unsigned char *old_hash;
1782 ret = get_hash_of_row(pb, &old_hash);
1783 if (ret < 0)
1784 goto out;
1785 hash_to_asc(old_hash, old_asc);
1786 if (flags & ADD_FLAG_VERBOSE) {
1787 ret = para_printf(&msg, "file change: %s -> %s\n",
1788 old_asc, asc);
1789 if (ret < 0)
1790 goto out;
1791 }
1792 ret = osl_update_object(audio_file_table, pb, AFTCOL_HASH,
1793 &objs[AFTCOL_HASH]);
1794 if (ret < 0)
1795 goto out;
1796 }
1797 if (hs || pb) { /* (hs != NULL and pb != NULL) implies hs == pb */
1798 struct osl_row *row = pb? pb : hs;
1799 /* update afhi and chunk_table */
1800 if (flags & ADD_FLAG_VERBOSE) {
1801 ret = para_printf(&msg, "updating afhi and chunk table\n");
1802 if (ret < 0)
1803 goto out;
1804 }
1805 ret = osl(osl_update_object(audio_file_table, row, AFTCOL_AFHI,
1806 &objs[AFTCOL_AFHI]));
1807 if (ret < 0)
1808 goto out;
1809 ret = osl(osl_update_object(audio_file_table, row, AFTCOL_CHUNKS,
1810 &objs[AFTCOL_CHUNKS]));
1811 if (ret < 0)
1812 goto out;
1813 afs_event(AFHI_CHANGE, &msg, row);
1814 goto out;
1815 }
1816 /* new entry, use default afsi */
1817 if (flags & ADD_FLAG_VERBOSE) {
1818 ret = para_printf(&msg, "new file\n");
1819 if (ret < 0)
1820 goto out;
1821 }
1822 default_afsi.last_played = time(NULL) - 365 * 24 * 60 * 60;
1823 default_afsi.audio_format_id = read_u8(buf + CAB_AUDIO_FORMAT_OFFSET);
1824
1825 objs[AFTCOL_AFSI].data = &afsi_buf;
1826 objs[AFTCOL_AFSI].size = AFSI_SIZE;
1827 save_afsi(&default_afsi, &objs[AFTCOL_AFSI]);
1828 ret = osl(osl_add_and_get_row(audio_file_table, objs, &aft_row));
1829 afs_event(AUDIO_FILE_ADD, &msg, aft_row);
1830 out:
1831 if (ret < 0)
1832 para_printf(&msg, "%s\n", para_strerror(-ret));
1833 if (msg.offset)
1834 pass_buffer_as_shm(fd, SBD_OUTPUT, msg.buf, msg.offset);
1835 free(msg.buf);
1836 }
1837
1838 /** Used by com_add(). */
1839 struct private_add_data {
1840 /** The pointer passed to the original command handler. */
1841 struct command_context *cc;
1842 /** The given add flags. */
1843 uint32_t flags;
1844 };
1845
1846 static void path_brother_callback(int fd, const struct osl_object *query)
1847 {
1848 char *path = query->data;
1849 struct osl_row *path_brother;
1850 int ret = aft_get_row_of_path(path, &path_brother);
1851 if (ret < 0)
1852 return;
1853 pass_buffer_as_shm(fd, SBD_OUTPUT, (char *)&path_brother,
1854 sizeof(path_brother));
1855 }
1856
1857 static void hash_sister_callback(int fd, const struct osl_object *query)
1858 {
1859 unsigned char *hash = query->data;
1860 struct osl_row *hash_sister;
1861
1862 hash_sister = find_hash_sister(hash);
1863 if (!hash_sister)
1864 return;
1865 pass_buffer_as_shm(fd, SBD_OUTPUT, (char *)&hash_sister,
1866 sizeof(hash_sister));
1867 }
1868
1869 static int get_row_pointer_from_result(struct osl_object *result,
1870 __a_unused uint8_t band, void *private)
1871 {
1872 struct osl_row **row = private;
1873 *row = *(struct osl_row **)(result->data);
1874 return 1;
1875 }
1876
1877 static int add_one_audio_file(const char *path, void *private_data)
1878 {
1879 int ret, send_ret = 1, fd;
1880 uint8_t format_num = -1;
1881 struct private_add_data *pad = private_data;
1882 struct afh_info afhi, *afhi_ptr = NULL;
1883 struct osl_row *pb = NULL, *hs = NULL; /* path brother/hash sister */
1884 struct osl_object map, obj = {.data = NULL}, query;
1885 unsigned char hash[HASH_SIZE];
1886
1887 ret = guess_audio_format(path);
1888 if (ret < 0 && !(pad->flags & ADD_FLAG_ALL))
1889 goto out_free;
1890 query.data = (char *)path;
1891 query.size = strlen(path) + 1;
1892 ret = send_callback_request(path_brother_callback, &query,
1893 get_row_pointer_from_result, &pb);
1894 if (ret < 0 && ret != -OSL_ERRNO_TO_PARA_ERROR(E_OSL_RB_KEY_NOT_FOUND))
1895 goto out_free;
1896 ret = 1;
1897 if (pb && (pad->flags & ADD_FLAG_LAZY)) { /* lazy is really cheap */
1898 if (pad->flags & ADD_FLAG_VERBOSE)
1899 send_ret = send_sb_va(&pad->cc->scc, SBD_OUTPUT,
1900 "lazy-ignore: %s\n", path);
1901 goto out_free;
1902 }
1903 /* We still want to add this file. Compute its hash. */
1904 ret = mmap_full_file(path, O_RDONLY, &map.data, &map.size, &fd);
1905 if (ret < 0)
1906 goto out_free;
1907 hash_function(map.data, map.size, hash);
1908
1909 /* Check whether the database contains a file with the same hash. */
1910 query.data = hash;
1911 query.size = HASH_SIZE;
1912 ret = send_callback_request(hash_sister_callback, &query,
1913 get_row_pointer_from_result, &hs);
1914 if (ret < 0)
1915 goto out_unmap;
1916 /* Return success if we already know this file. */
1917 ret = 1;
1918 if (pb && hs && hs == pb && !(pad->flags & ADD_FLAG_FORCE)) {
1919 if (pad->flags & ADD_FLAG_VERBOSE)
1920 send_ret = send_sb_va(&pad->cc->scc, SBD_OUTPUT,
1921 "%s exists, not forcing update\n", path);
1922 goto out_unmap;
1923 }
1924 /*
1925 * We won't recalculate the audio format info and the chunk table if
1926 * there is a hash sister and FORCE was not given.
1927 */
1928 if (!hs || (pad->flags & ADD_FLAG_FORCE)) {
1929 ret = compute_afhi(path, map.data, map.size, fd, &afhi);
1930 if (ret < 0)
1931 goto out_unmap;
1932 format_num = ret;
1933 afhi_ptr = &afhi;
1934 }
1935 munmap(map.data, map.size);
1936 close(fd);
1937 if (pad->flags & ADD_FLAG_VERBOSE) {
1938 send_ret = send_sb_va(&pad->cc->scc, SBD_OUTPUT,
1939 "adding %s\n", path);
1940 if (send_ret < 0)
1941 goto out_free;
1942 }
1943 save_add_callback_buffer(hash, path, afhi_ptr, pad->flags, format_num, &obj);
1944 /* Ask afs to consider this entry for adding. */
1945 ret = send_callback_request(com_add_callback, &obj,
1946 afs_cb_result_handler, pad->cc);
1947 goto out_free;
1948
1949 out_unmap:
1950 close(fd);
1951 munmap(map.data, map.size);
1952 out_free:
1953 if (ret < 0 && send_ret >= 0)
1954 send_ret = send_sb_va(&pad->cc->scc, SBD_ERROR_LOG,
1955 "failed to add %s (%s)\n", path, para_strerror(-ret));
1956 free(obj.data);
1957 clear_afhi(afhi_ptr);
1958 /* Stop adding files only on send errors. */
1959 return send_ret;
1960 }
1961
1962 int com_add(struct command_context *cc)
1963 {
1964 int i, ret;
1965 struct private_add_data pad = {.cc = cc, .flags = 0};
1966 struct stat statbuf;
1967
1968 for (i = 1; i < cc->argc; i++) {
1969 const char *arg = cc->argv[i];
1970 if (arg[0] != '-')
1971 break;
1972 if (!strcmp(arg, "--")) {
1973 i++;
1974 break;
1975 }
1976 if (!strcmp(arg, "-a")) {
1977 pad.flags |= ADD_FLAG_ALL;
1978 continue;
1979 }
1980 if (!strcmp(arg, "-l")) {
1981 pad.flags |= ADD_FLAG_LAZY;
1982 continue;
1983 }
1984 if (!strcmp(arg, "-f")) {
1985 pad.flags |= ADD_FLAG_FORCE;
1986 continue;
1987 }
1988 if (!strcmp(arg, "-v")) {
1989 pad.flags |= ADD_FLAG_VERBOSE;
1990 continue;
1991 }
1992 }
1993 if (cc->argc <= i)
1994 return -E_AFT_SYNTAX;
1995 for (; i < cc->argc; i++) {
1996 char *path;
1997 ret = verify_path(cc->argv[i], &path);
1998 if (ret < 0) {
1999 ret = send_sb_va(&cc->scc, SBD_ERROR_LOG, "%s: %s\n",
2000 cc->argv[i], para_strerror(-ret));
2001 if (ret < 0)
2002 return ret;
2003 continue;
2004 }
2005 ret = stat(path, &statbuf);
2006 if (ret < 0) {
2007 ret = send_sb_va(&cc->scc, SBD_ERROR_LOG,
2008 "failed to stat %s (%s)\n", path,
2009 strerror(errno));
2010 free(path);
2011 if (ret < 0)
2012 return ret;
2013 continue;
2014 }
2015 if (S_ISDIR(statbuf.st_mode))
2016 ret = for_each_file_in_dir(path, add_one_audio_file,
2017 &pad);
2018 else
2019 ret = add_one_audio_file(path, &pad);
2020 if (ret < 0) {
2021 send_sb_va(&cc->scc, SBD_OUTPUT, "%s: %s\n", path,
2022 para_strerror(-ret));
2023 free(path);
2024 return ret;
2025 }
2026 free(path);
2027 }
2028 return 1;
2029 }
2030
2031 /**
2032 * Flags used by the touch command.
2033 *
2034 * \sa com_touch().
2035 */
2036 enum touch_flags {
2037 /** Whether the \p FNM_PATHNAME flag should be passed to fnmatch(). */
2038 TOUCH_FLAG_FNM_PATHNAME = 1,
2039 /** Activates verbose mode. */
2040 TOUCH_FLAG_VERBOSE = 2
2041 };
2042
2043 /** Options used by com_touch(). */
2044 struct com_touch_options {
2045 /** New num_played value. */
2046 int32_t num_played;
2047 /** New last played count. */
2048 int64_t last_played;
2049 /** New lyrics id. */
2050 int32_t lyrics_id;
2051 /** New image id. */
2052 int32_t image_id;
2053 /** New amplification value. */
2054 int32_t amp;
2055 /** Command line flags (see \ref touch_flags). */
2056 unsigned flags;
2057 };
2058
2059 /** Data passed to the action handler of com_touch(). */
2060 struct touch_action_data {
2061 /** Command line options (see \ref com_touch_options). */
2062 struct com_touch_options *cto;
2063 /** Message buffer. */
2064 struct para_buffer pb;
2065 };
2066
2067 static int touch_audio_file(__a_unused struct osl_table *table,
2068 struct osl_row *row, const char *name, void *data)
2069 {
2070 struct touch_action_data *tad = data;
2071 struct osl_object obj;
2072 struct afs_info old_afsi, new_afsi;
2073 int ret, no_options = tad->cto->num_played < 0 && tad->cto->last_played < 0 &&
2074 tad->cto->lyrics_id < 0 && tad->cto->image_id < 0 && tad->cto->amp < 0;
2075 struct afsi_change_event_data aced;
2076
2077 ret = get_afsi_object_of_row(row, &obj);
2078 if (ret < 0)
2079 return para_printf(&tad->pb, "%s: %s\n", name, para_strerror(-ret));
2080 ret = load_afsi(&old_afsi, &obj);
2081 if (ret < 0)
2082 return para_printf(&tad->pb, "%s: %s\n", name, para_strerror(-ret));
2083 new_afsi = old_afsi;
2084 if (no_options) {
2085 new_afsi.num_played++;
2086 new_afsi.last_played = time(NULL);
2087 if (tad->cto->flags & TOUCH_FLAG_VERBOSE) {
2088 ret = para_printf(&tad->pb, "%s: num_played = %u, "
2089 "last_played = now()\n", name,
2090 new_afsi.num_played);
2091 if (ret < 0)
2092 return ret;
2093 }
2094 } else {
2095 if (tad->cto->flags & TOUCH_FLAG_VERBOSE) {
2096 ret = para_printf(&tad->pb, "touching %s\n", name);
2097 if (ret < 0)
2098 return ret;
2099 }
2100 if (tad->cto->lyrics_id >= 0)
2101 new_afsi.lyrics_id = tad->cto->lyrics_id;
2102 if (tad->cto->image_id >= 0)
2103 new_afsi.image_id = tad->cto->image_id;
2104 if (tad->cto->num_played >= 0)
2105 new_afsi.num_played = tad->cto->num_played;
2106 if (tad->cto->last_played >= 0)
2107 new_afsi.last_played = tad->cto->last_played;
2108 if (tad->cto->amp >= 0)
2109 new_afsi.amp = tad->cto->amp;
2110 }
2111 save_afsi(&new_afsi, &obj); /* in-place update */
2112 aced.aft_row = row;
2113 aced.old_afsi = &old_afsi;
2114 afs_event(AFSI_CHANGE, &tad->pb, &aced);
2115 return 1;
2116 }
2117
2118 static void com_touch_callback(int fd, const struct osl_object *query)
2119 {
2120 struct touch_action_data tad = {.cto = query->data,
2121 .pb = {
2122 .max_size = shm_get_shmmax(),
2123 .private_data = &fd,
2124 .max_size_handler = afs_max_size_handler
2125 }
2126 };
2127 int ret, ret2 = 0;
2128 struct pattern_match_data pmd = {
2129 .table = audio_file_table,
2130 .loop_col_num = AFTCOL_HASH,
2131 .match_col_num = AFTCOL_PATH,
2132 .patterns = {.data = (char *)query->data + sizeof(*tad.cto),
2133 .size = query->size - sizeof(*tad.cto)},
2134 .data = &tad,
2135 .action = touch_audio_file
2136 };
2137 if (tad.cto->flags & TOUCH_FLAG_FNM_PATHNAME)
2138 pmd.fnmatch_flags |= FNM_PATHNAME;
2139 ret = for_each_matching_row(&pmd);
2140 if (ret < 0)
2141 ret2 = para_printf(&tad.pb, "%s\n", para_strerror(-ret));
2142 else if (pmd.num_matches == 0)
2143 ret2 = para_printf(&tad.pb, "no matches\n");
2144 if (ret2 >= 0 && tad.pb.offset)
2145 pass_buffer_as_shm(fd, SBD_OUTPUT, tad.pb.buf, tad.pb.offset);
2146 free(tad.pb.buf);
2147 }
2148
2149 int com_touch(struct command_context *cc)
2150 {
2151 struct com_touch_options cto = {
2152 .num_played = -1,
2153 .last_played = -1,
2154 .lyrics_id = -1,
2155 .image_id = -1,
2156 .amp = -1,
2157 };
2158 struct osl_object query = {.data = &cto, .size = sizeof(cto)};
2159 int i, ret;
2160
2161
2162 for (i = 1; i < cc->argc; i++) {
2163 const char *arg = cc->argv[i];
2164 if (arg[0] != '-')
2165 break;
2166 if (!strcmp(arg, "--")) {
2167 i++;
2168 break;
2169 }
2170 if (!strncmp(arg, "-n=", 3)) {
2171 ret = para_atoi32(arg + 3, &cto.num_played);
2172 if (ret < 0)
2173 return ret;
2174 continue;
2175 }
2176 if (!strncmp(arg, "-l=", 3)) {
2177 ret = para_atoi64(arg + 3, &cto.last_played);
2178 if (ret < 0)
2179 return ret;
2180 continue;
2181 }
2182 if (!strncmp(arg, "-y=", 3)) {
2183 ret = para_atoi32(arg + 3, &cto.lyrics_id);
2184 if (ret < 0)
2185 return ret;
2186 continue;
2187 }
2188 if (!strncmp(arg, "-i=", 3)) {
2189 ret = para_atoi32(arg + 3, &cto.image_id);
2190 if (ret < 0)
2191 return ret;
2192 continue;
2193 }
2194 if (!strncmp(arg, "-a=", 3)) {
2195 int32_t val;
2196 ret = para_atoi32(arg + 3, &val);
2197 if (ret < 0)
2198 return ret;
2199 if (val < 0 || val > 255)
2200 return -ERRNO_TO_PARA_ERROR(EINVAL);
2201 cto.amp = val;
2202 continue;
2203 }
2204 if (!strcmp(arg, "-p")) {
2205 cto.flags |= TOUCH_FLAG_FNM_PATHNAME;
2206 continue;
2207 }
2208 if (!strcmp(arg, "-v")) {
2209 cto.flags |= TOUCH_FLAG_VERBOSE;
2210 continue;
2211 }
2212 break; /* non-option starting with dash */
2213 }
2214 if (i >= cc->argc)
2215 return -E_AFT_SYNTAX;
2216 ret = send_option_arg_callback_request(&query, cc->argc - i,
2217 cc->argv + i, com_touch_callback, afs_cb_result_handler, cc);
2218 if (ret < 0)
2219 send_strerror(cc, -ret);
2220 return ret;
2221 }
2222
2223 /** Flags for com_rm(). */
2224 enum rm_flags {
2225 /** -v */
2226 RM_FLAG_VERBOSE = 1,
2227 /** -f */
2228 RM_FLAG_FORCE = 2,
2229 /** -p */
2230 RM_FLAG_FNM_PATHNAME = 4
2231 };
2232
2233 /** Data passed to the action handler of com_rm(). */
2234 struct com_rm_action_data {
2235 /** Command line flags ((see \ref rm_flags). */
2236 uint32_t flags;
2237 /** Message buffer. */
2238 struct para_buffer pb;
2239 };
2240
2241 static int remove_audio_file(__a_unused struct osl_table *table,
2242 struct osl_row *row, const char *name, void *data)
2243 {
2244 struct com_rm_action_data *crd = data;
2245 int ret;
2246
2247 if (crd->flags & RM_FLAG_VERBOSE) {
2248 ret = para_printf(&crd->pb, "removing %s\n", name);
2249 if (ret < 0)
2250 return ret;
2251 }
2252 afs_event(AUDIO_FILE_REMOVE, &crd->pb, row);
2253 ret = osl(osl_del_row(audio_file_table, row));
2254 if (ret < 0)
2255 para_printf(&crd->pb, "%s: %s\n", name, para_strerror(-ret));
2256 return ret;
2257 }
2258
2259 static void com_rm_callback(int fd, const struct osl_object *query)
2260 {
2261 struct com_rm_action_data crd = {.flags = *(uint32_t *)query->data,
2262 .pb = {
2263 .max_size = shm_get_shmmax(),
2264 .private_data = &fd,
2265 .max_size_handler = afs_max_size_handler
2266 }
2267 };
2268 int ret;
2269 struct pattern_match_data pmd = {
2270 .table = audio_file_table,
2271 .loop_col_num = AFTCOL_HASH,
2272 .match_col_num = AFTCOL_PATH,
2273 .patterns = {.data = (char *)query->data + sizeof(uint32_t),
2274 .size = query->size - sizeof(uint32_t)},
2275 .data = &crd,
2276 .action = remove_audio_file
2277 };
2278 if (crd.flags & RM_FLAG_FNM_PATHNAME)
2279 pmd.fnmatch_flags |= FNM_PATHNAME;
2280 ret = for_each_matching_row(&pmd);
2281 if (ret < 0) {
2282 para_printf(&crd.pb, "%s\n", para_strerror(-ret));
2283 return;
2284 }
2285 if ((pmd.num_matches == 0) && !(crd.flags & RM_FLAG_FORCE))
2286 ret = para_printf(&crd.pb, "no matches -- nothing removed\n");
2287 else if (crd.flags & RM_FLAG_VERBOSE) {
2288 ret = para_printf(&crd.pb, "removed %u files\n",
2289 pmd.num_matches);
2290 }
2291 if (ret >= 0 && crd.pb.offset)
2292 pass_buffer_as_shm(fd, SBD_OUTPUT, crd.pb.buf, crd.pb.offset);
2293 free(crd.pb.buf);
2294 }
2295
2296 /* TODO options: -r (recursive) */
2297 int com_rm(struct command_context *cc)
2298 {
2299 uint32_t flags = 0;
2300 struct osl_object query = {.data = &flags, .size = sizeof(flags)};
2301 int i, ret;
2302
2303 for (i = 1; i < cc->argc; i++) {
2304 const char *arg = cc->argv[i];
2305 if (arg[0] != '-')
2306 break;
2307 if (!strcmp(arg, "--")) {
2308 i++;
2309 break;
2310 }
2311 if (!strcmp(arg, "-f")) {
2312 flags |= RM_FLAG_FORCE;
2313 continue;
2314 }
2315 if (!strcmp(arg, "-p")) {
2316 flags |= RM_FLAG_FNM_PATHNAME;
2317 continue;
2318 }
2319 if (!strcmp(arg, "-v")) {
2320 flags |= RM_FLAG_VERBOSE;
2321 continue;
2322 }
2323 break;
2324 }
2325 if (i >= cc->argc)
2326 return -E_AFT_SYNTAX;
2327 ret = send_option_arg_callback_request(&query, cc->argc - i,
2328 cc->argv + i, com_rm_callback, afs_cb_result_handler, cc);
2329 if (ret < 0)
2330 send_strerror(cc, -ret);
2331 return ret;
2332 }
2333
2334 /**
2335 * Flags used by the cpsi command.
2336 *
2337 * \sa com_cpsi().
2338 */
2339 enum cpsi_flags {
2340 /** Whether the lyrics id should be copied. */
2341 CPSI_FLAG_COPY_LYRICS_ID = 1,
2342 /** Whether the image id should be copied. */
2343 CPSI_FLAG_COPY_IMAGE_ID = 2,
2344 /** Whether the lastplayed time should be copied. */
2345 CPSI_FLAG_COPY_LASTPLAYED = 4,
2346 /** Whether the numplayed count should be copied. */
2347 CPSI_FLAG_COPY_NUMPLAYED = 8,
2348 /** Whether the attributes should be copied. */
2349 CPSI_FLAG_COPY_ATTRIBUTES = 16,
2350 /** Activates verbose mode. */
2351 CPSI_FLAG_VERBOSE = 32,
2352 };
2353
2354 /** Data passed to the action handler of com_cpsi(). */
2355 struct cpsi_action_data {
2356 /** command line flags (see \ref cpsi_flags). */
2357 unsigned flags;
2358 /** Message buffer. */
2359 struct para_buffer pb;
2360 /** Values are copied from here. */
2361 struct afs_info source_afsi;
2362 };
2363
2364 static int copy_selector_info(__a_unused struct osl_table *table,
2365 struct osl_row *row, const char *name, void *data)
2366 {
2367 struct cpsi_action_data *cad = data;
2368 struct osl_object target_afsi_obj;
2369 int ret;
2370 struct afs_info old_afsi, target_afsi;
2371 struct afsi_change_event_data aced;
2372
2373 ret = get_afsi_object_of_row(row, &target_afsi_obj);
2374 if (ret < 0)
2375 return ret;
2376 load_afsi(&target_afsi, &target_afsi_obj);
2377 old_afsi = target_afsi;
2378 if (cad->flags & CPSI_FLAG_COPY_LYRICS_ID)
2379 target_afsi.lyrics_id = cad->source_afsi.lyrics_id;
2380 if (cad->flags & CPSI_FLAG_COPY_IMAGE_ID)
2381 target_afsi.image_id = cad->source_afsi.image_id;
2382 if (cad->flags & CPSI_FLAG_COPY_LASTPLAYED)
2383 target_afsi.last_played = cad->source_afsi.last_played;
2384 if (cad->flags & CPSI_FLAG_COPY_NUMPLAYED)
2385 target_afsi.num_played = cad->source_afsi.num_played;
2386 if (cad->flags & CPSI_FLAG_COPY_ATTRIBUTES)
2387 target_afsi.attributes = cad->source_afsi.attributes;
2388 save_afsi(&target_afsi, &target_afsi_obj); /* in-place update */
2389 if (cad->flags & CPSI_FLAG_VERBOSE) {
2390 ret = para_printf(&cad->pb, "copied afsi to %s\n", name);
2391 if (ret < 0)
2392 return ret;
2393 }
2394 aced.aft_row = row;
2395 aced.old_afsi = &old_afsi;
2396 afs_event(AFSI_CHANGE, &cad->pb, &aced);
2397 return 1;
2398 }
2399
2400 static void com_cpsi_callback(int fd, const struct osl_object *query)
2401 {
2402 struct cpsi_action_data cad = {
2403 .flags = *(unsigned *)query->data,
2404 .pb = {
2405 .max_size = shm_get_shmmax(),
2406 .private_data = &fd,
2407 .max_size_handler = afs_max_size_handler
2408 }
2409 };
2410 int ret;
2411 char *source_path = (char *)query->data + sizeof(cad.flags);
2412 struct pattern_match_data pmd = {
2413 .table = audio_file_table,
2414 .loop_col_num = AFTCOL_HASH,
2415 .match_col_num = AFTCOL_PATH,
2416 .patterns = {.data = source_path + strlen(source_path) + 1,
2417 .size = query->size - sizeof(cad.flags)
2418 - strlen(source_path) - 1},
2419 .data = &cad,
2420 .action = copy_selector_info
2421 };
2422
2423 ret = get_afsi_of_path(source_path, &cad.source_afsi);
2424 if (ret < 0)
2425 goto out;
2426 ret = for_each_matching_row(&pmd);
2427 out:
2428 if (ret < 0)
2429 para_printf(&cad.pb, "%s\n", para_strerror(-ret));
2430 else if (pmd.num_matches > 0) {
2431 if (cad.flags & CPSI_FLAG_VERBOSE)
2432 para_printf(&cad.pb, "copied requested afsi from %s "
2433 "to %u files\n", source_path, pmd.num_matches);
2434 } else
2435 para_printf(&cad.pb, "no matches - nothing copied\n");
2436 if (cad.pb.offset)
2437 pass_buffer_as_shm(fd, SBD_OUTPUT, cad.pb.buf, cad.pb.offset);
2438 free(cad.pb.buf);
2439 }
2440
2441 int com_cpsi(struct command_context *cc)
2442 {
2443 unsigned flags = 0;
2444 int i, ret;
2445 struct osl_object options = {.data = &flags, .size = sizeof(flags)};
2446
2447 for (i = 1; i < cc->argc; i++) {
2448 const char *arg = cc->argv[i];
2449 if (arg[0] != '-')
2450 break;
2451 if (!strcmp(arg, "--")) {
2452 i++;
2453 break;
2454 }
2455 if (!strcmp(arg, "-y")) {
2456 flags |= CPSI_FLAG_COPY_LYRICS_ID;
2457 continue;
2458 }
2459 if (!strcmp(arg, "-i")) {
2460 flags |= CPSI_FLAG_COPY_IMAGE_ID;
2461 continue;
2462 }
2463 if (!strcmp(arg, "-l")) {
2464 flags |= CPSI_FLAG_COPY_LASTPLAYED;
2465 continue;
2466 }
2467 if (!strcmp(arg, "-n")) {
2468 flags |= CPSI_FLAG_COPY_NUMPLAYED;
2469 continue;
2470 }
2471 if (!strcmp(arg, "-a")) {
2472 flags |= CPSI_FLAG_COPY_ATTRIBUTES;
2473 continue;
2474 }
2475 if (!strcmp(arg, "-v")) {
2476 flags |= CPSI_FLAG_VERBOSE;
2477 continue;
2478 }
2479 break;
2480 }
2481 if (i + 1 >= cc->argc) /* need at least source file and pattern */
2482 return -E_AFT_SYNTAX;
2483 if (!(flags & ~CPSI_FLAG_VERBOSE)) /* no copy flags given */
2484 flags = ~(unsigned)CPSI_FLAG_VERBOSE | flags;
2485 ret = send_option_arg_callback_request(&options, cc->argc - i,
2486 cc->argv + i, com_cpsi_callback, afs_cb_result_handler, cc);
2487 if (ret < 0)
2488 send_strerror(cc, -ret);
2489 return ret;
2490 }
2491
2492 struct change_atts_data {
2493 uint64_t add_mask, del_mask;
2494 struct para_buffer pb;
2495 };
2496
2497 static int change_atts(__a_unused struct osl_table *table,
2498 struct osl_row *row, __a_unused const char *name, void *data)
2499 {
2500 int ret;
2501 struct osl_object obj;
2502 struct afs_info old_afsi, new_afsi;
2503 struct afsi_change_event_data aced = {
2504 .aft_row = row,
2505 .old_afsi = &old_afsi
2506 };
2507 struct change_atts_data *cad = data;
2508
2509 ret = get_afsi_object_of_row(row, &obj);
2510 if (ret < 0)
2511 return ret;
2512 ret = load_afsi(&old_afsi, &obj);
2513 if (ret < 0)
2514 return ret;
2515 new_afsi = old_afsi;
2516 new_afsi.attributes |= cad->add_mask;
2517 new_afsi.attributes &= ~cad->del_mask;
2518 save_afsi(&new_afsi, &obj); /* in-place update */
2519 afs_event(AFSI_CHANGE, &cad->pb, &aced);
2520 return 1;
2521 }
2522
2523 static void com_setatt_callback(int fd, const struct osl_object *query)
2524 {
2525 char *p;
2526 int ret;
2527 size_t len;
2528 struct change_atts_data cad = {
2529 .pb = {
2530 .max_size = shm_get_shmmax(),
2531 .max_size_handler = afs_max_size_handler,
2532 .private_data = &(struct afs_max_size_handler_data) {
2533 .fd = fd,
2534 .band = SBD_OUTPUT
2535 }
2536 }
2537 };
2538 struct pattern_match_data pmd = {
2539 .table = audio_file_table,
2540 .loop_col_num = AFTCOL_HASH,
2541 .match_col_num = AFTCOL_PATH,
2542 .pm_flags = PM_SKIP_EMPTY_NAME,
2543 .data = &cad,
2544 .action = change_atts
2545 };
2546
2547 for (p = query->data; p < (char *)query->data + query->size; p += len + 1) {
2548 char c;
2549 unsigned char bitnum;
2550
2551 len = strlen(p);
2552 ret = -E_ATTR_SYNTAX;
2553 if (len == 0)
2554 goto out;
2555 c = p[len - 1];
2556 if (c != '+' && c != '-')
2557 break;
2558 p[len - 1] = '\0';
2559 ret = get_attribute_bitnum_by_name(p, &bitnum);
2560 if (ret < 0)
2561 goto out;
2562 if (c == '+')
2563 cad.add_mask |= (1UL << bitnum);
2564 else
2565 cad.del_mask |= (1UL << bitnum);
2566 }
2567 ret = -E_ATTR_SYNTAX;
2568 if (!cad.add_mask && !cad.del_mask)
2569 goto out;
2570 pmd.patterns.data = p;
2571 assert(p < (char *)query->data + query->size);
2572 pmd.patterns.size = (char *)query->data + query->size - p;
2573 ret = for_each_matching_row(&pmd);
2574 if (ret < 0)
2575 goto out;
2576 if (pmd.num_matches == 0)
2577 para_printf(&cad.pb, "no matches\n");
2578 out:
2579 if (ret < 0)
2580 para_printf(&cad.pb, "%s\n", para_strerror(-ret));
2581 if (cad.pb.offset)
2582 pass_buffer_as_shm(fd, SBD_OUTPUT, cad.pb.buf, cad.pb.offset);
2583 free(cad.pb.buf);
2584 }
2585
2586 int com_setatt(struct command_context *cc)
2587 {
2588 if (cc->argc < 3)
2589 return -E_ATTR_SYNTAX;
2590 return send_standard_callback_request(cc->argc - 1, cc->argv + 1,
2591 com_setatt_callback, afs_cb_result_handler, cc);
2592 }
2593
2594 static void afs_stat_callback(int fd, const struct osl_object *query)
2595 {
2596 int *parser_friendly = query->data;
2597 char *buf = *parser_friendly?
2598 parser_friendly_status_items : status_items;
2599
2600 if (!buf)
2601 return;
2602 pass_buffer_as_shm(fd, SBD_OUTPUT, buf, strlen(buf));
2603 }
2604
2605 /**
2606 * Get the current afs status items from the afs process and send it.
2607 *
2608 * \param cc The command context, used e.g. for data encryption.
2609 * \param parser_friendly Whether parser-friendly output format should be used.
2610 *
2611 * As the contents of the afs status items change in time and the command
2612 * handler only has a COW version created at fork time, it can not send
2613 * up-to-date afs status items directly. Therefore the usual callback mechanism
2614 * is used to pass the status items from the afs process to the command handler
2615 * via a shared memory area and a pipe.
2616 *
2617 * \return The return value of the underlying call to \ref send_callback_request().
2618 */
2619 int send_afs_status(struct command_context *cc, int parser_friendly)
2620 {
2621 struct osl_object query = {.data = &parser_friendly,
2622 .size = sizeof(parser_friendly)};
2623
2624 return send_callback_request(afs_stat_callback, &query,
2625 afs_cb_result_handler, cc);
2626 }
2627
2628 /* TODO: optionally fix problems by removing offending rows */
2629 static int check_audio_file(struct osl_row *row, void *data)
2630 {
2631 char *path;
2632 struct para_buffer *pb = data;
2633 struct stat statbuf;
2634 int ret = get_audio_file_path_of_row(row, &path);
2635 struct afs_info afsi;
2636 char *blob_name;
2637
2638 if (ret < 0)
2639 return para_printf(pb, "%s\n", para_strerror(-ret));
2640 if (stat(path, &statbuf) < 0) {
2641 ret = para_printf(pb, "%s: stat error (%s)\n", path, strerror(errno));
2642 if (ret < 0)
2643 return ret;
2644 } else {
2645 if (!S_ISREG(statbuf.st_mode)) {
2646 ret = para_printf(pb, "%s: not a regular file\n", path);
2647 if (ret < 0)
2648 return ret;
2649 }
2650 }
2651 ret = get_afsi_of_row(row, &afsi);
2652 if (ret < 0)
2653 return para_printf(pb, "%s: %s\n", path, para_strerror(-ret));
2654 ret = lyr_get_name_by_id(afsi.lyrics_id, &blob_name);
2655 if (ret < 0) {
2656 ret = para_printf(pb, "%s lyrics id %u: %s\n", path, afsi.lyrics_id,
2657 para_strerror(-ret));
2658 if (ret < 0)
2659 return ret;
2660 }
2661 ret = img_get_name_by_id(afsi.image_id, &blob_name);
2662 if (ret < 0)
2663 ret = para_printf(pb, "%s image id %u: %s\n", path, afsi.image_id,
2664 para_strerror(-ret));
2665 return ret;
2666 }
2667
2668 /**
2669 * Check the audio file table for inconsistencies.
2670 *
2671 * \param fd The afs socket.
2672 * \param query Unused.
2673 *
2674 * This function always succeeds.
2675 *
2676 * \sa com_check().
2677 */
2678 void aft_check_callback(int fd, __a_unused const struct osl_object *query)
2679 {
2680 struct para_buffer pb = {
2681 .max_size = shm_get_shmmax(),
2682 .private_data = &(struct afs_max_size_handler_data) {
2683 .fd = fd,
2684 .band = SBD_OUTPUT
2685 },
2686 .max_size_handler = afs_max_size_handler
2687 };
2688 int ret = para_printf(&pb, "checking audio file table...\n");
2689
2690 if (ret < 0)
2691 return;
2692 audio_file_loop(&pb, check_audio_file);
2693 if (pb.offset)
2694 pass_buffer_as_shm(fd, SBD_OUTPUT, pb.buf, pb.offset);
2695 free(pb.buf);
2696 }
2697
2698 /**
2699 * Close the audio file table.
2700 *
2701 * \param flags Usual flags that are passed to osl_close_table().
2702 *
2703 * \sa osl_close_table().
2704 */
2705 static void aft_close(void)
2706 {
2707 osl_close_table(audio_file_table, OSL_MARK_CLEAN);
2708 audio_file_table = NULL;
2709 }
2710
2711 /**
2712 * Open the audio file table.
2713 *
2714 * \param dir The database directory.
2715 *
2716 * \return Standard.
2717 *
2718 * \sa osl_open_table().
2719 */
2720 static int aft_open(const char *dir)
2721 {
2722 int ret;
2723
2724 audio_file_table_desc.dir = dir;
2725 ret = osl(osl_open_table(&audio_file_table_desc, &audio_file_table));
2726 if (ret >= 0) {
2727 unsigned num;
2728 osl_get_num_rows(audio_file_table, &num);
2729 PARA_INFO_LOG("audio file table contains %d files\n", num);
2730 return ret;
2731 }
2732 PARA_INFO_LOG("failed to open audio file table\n");
2733 audio_file_table = NULL;
2734 if (ret >= 0 || ret == -OSL_ERRNO_TO_PARA_ERROR(E_OSL_NOENT))
2735 return 1;
2736 return ret;
2737 }
2738
2739 static int aft_create(const char *dir)
2740 {
2741 audio_file_table_desc.dir = dir;
2742 return osl(osl_create_table(&audio_file_table_desc));
2743 }
2744
2745 static int clear_attribute(struct osl_row *row, void *data)
2746 {
2747 struct rmatt_event_data *red = data;
2748 struct afs_info afsi;
2749 struct osl_object obj;
2750 int ret = get_afsi_object_of_row(row, &obj);
2751 uint64_t mask = ~(1ULL << red->bitnum);
2752
2753 if (ret < 0)
2754 return ret;
2755 ret = load_afsi(&afsi, &obj);
2756 if (ret < 0)
2757 return ret;
2758 afsi.attributes &= mask;
2759 save_afsi(&afsi, &obj);
2760 return 1;
2761 }
2762
2763 static int aft_event_handler(enum afs_events event, struct para_buffer *pb,
2764 void *data)
2765 {
2766 int ret;
2767
2768 switch (event) {
2769 case ATTRIBUTE_REMOVE: {
2770 const struct rmatt_event_data *red = data;
2771 ret = para_printf(pb, "clearing attribute %s (bit %u) from all "
2772 "entries in the audio file table\n", red->name,
2773 red->bitnum);
2774 if (ret < 0)
2775 return ret;
2776 return audio_file_loop(data, clear_attribute);
2777 }
2778 default:
2779 return 1;
2780 }
2781 }
2782
2783 /**
2784 * Initialize the audio file table.
2785 *
2786 * \param t Pointer to the structure to be initialized.
2787 */
2788 void aft_init(struct afs_table *t)
2789 {
2790 t->open = aft_open;
2791 t->close = aft_close;
2792 t->create = aft_create;
2793 t->event_handler = aft_event_handler;
2794 }