aft.c: Simplify load_afd().
[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 int ret;
697
698 ret = shm_attach(shmid, ATTACH_RO, &shm_afd);
699 if (ret < 0)
700 return ret;
701 *afd = *(struct audio_file_data *)shm_afd;
702 load_chunk_table(&afd->afhi, shm_afd + sizeof(*afd));
703 shm_detach(shm_afd);
704 return 1;
705 }
706
707 static int get_local_time(uint64_t *seconds, char *buf, size_t size,
708 time_t current_time, enum ls_listing_mode lm)
709 {
710 struct tm t;
711
712 if (!localtime_r((time_t *)seconds, &t))
713 return -E_LOCALTIME;
714 if (lm == LS_MODE_MBOX) {
715 if (!strftime(buf, size, "%c", &t))
716 return -E_STRFTIME;
717 return 1;
718 }
719 if (*seconds + 6 * 30 * 24 * 3600 > current_time) {
720 if (!strftime(buf, size, "%b %e %k:%M", &t))
721 return -E_STRFTIME;
722 return 1;
723 }
724 if (!strftime(buf, size, "%b %e %Y", &t))
725 return -E_STRFTIME;
726 return 1;
727 }
728
729 /** Compute the number of (decimal) digits of a number. */
730 #define GET_NUM_DIGITS(x, num) { \
731 typeof((x)) _tmp = PARA_ABS(x); \
732 *num = 1; \
733 if ((_tmp)) \
734 while ((_tmp) > 9) { \
735 (_tmp) /= 10; \
736 (*num)++; \
737 } \
738 }
739
740 __a_const static short unsigned get_duration_width(int seconds)
741 {
742 short unsigned width;
743 unsigned hours = seconds / 3600, mins = (seconds % 3600) / 60;
744
745 if (!hours) /* less than one hour => m:ss or mm:ss => 4 or 5 digits */
746 return 4 + (mins > 9);
747 /* more than one hour => h:mm:ss, hh:mm:ss, hhh:mm:ss, ... */
748 GET_NUM_DIGITS(hours, &width);
749 return width + 6;
750 }
751
752 static void get_duration_buf(int seconds, char *buf, struct ls_options *opts)
753 {
754 unsigned hours = seconds / 3600, mins = (seconds % 3600) / 60;
755 short unsigned max_width;
756
757 if (!hours) { /* m:ss or mm:ss */
758 max_width = opts->mode == LS_MODE_LONG?
759 opts->widths.duration_width : 4;
760 sprintf(buf, "%*u:%02u", max_width - 3, mins, seconds % 60);
761 } else { /* more than one hour => h:mm:ss, hh:mm:ss, hhh:mm:ss, ... */
762 max_width = opts->mode == LS_MODE_LONG?
763 opts->widths.duration_width : 7;
764 sprintf(buf, "%*u:%02u:%02u", max_width - 6, hours, mins,
765 seconds % 60);
766 }
767 }
768
769 static int write_attribute_items(struct para_buffer *b,
770 const char *att_bitmap, struct afs_info *afsi)
771 {
772 char *att_text;
773 int ret;
774
775 ret = WRITE_STATUS_ITEM(b, SI_ATTRIBUTES_BITMAP, "%s\n", att_bitmap);
776 if (ret < 0)
777 return ret;
778 ret = get_attribute_text(&afsi->attributes, " ", &att_text);
779 if (ret < 0)
780 return ret;
781 ret = WRITE_STATUS_ITEM(b, SI_ATTRIBUTES_TXT, "%s\n", att_text);
782 free(att_text);
783 return ret;
784 }
785
786 static int write_lyrics_items(struct para_buffer *b, struct afs_info *afsi)
787 {
788 char *lyrics_name;
789 int ret;
790
791 ret = WRITE_STATUS_ITEM(b, SI_LYRICS_ID, "%u\n", afsi->lyrics_id);
792 if (ret < 0)
793 return ret;
794 lyr_get_name_by_id(afsi->lyrics_id, &lyrics_name);
795 return WRITE_STATUS_ITEM(b, SI_LYRICS_NAME, "%s\n", lyrics_name?
796 lyrics_name : "(none)");
797 }
798
799 static int write_image_items(struct para_buffer *b, struct afs_info *afsi)
800 {
801 char *image_name;
802 int ret;
803
804 ret = WRITE_STATUS_ITEM(b, SI_IMAGE_ID, "%u\n", afsi->image_id);
805 if (ret < 0)
806 return ret;
807 img_get_name_by_id(afsi->image_id, &image_name);
808 return WRITE_STATUS_ITEM(b, SI_IMAGE_NAME, "%s\n", image_name?
809 image_name : "(none)");
810 }
811
812 static int write_filename_items(struct para_buffer *b, const char *path,
813 unsigned flags)
814 {
815 char *val;
816 int ret;
817
818 if (!(flags & LS_FLAG_FULL_PATH))
819 return WRITE_STATUS_ITEM(b, SI_BASENAME, "%s\n", path);
820 ret = WRITE_STATUS_ITEM(b, SI_PATH, "%s\n", path);
821 if (ret < 0)
822 return ret;
823 val = para_basename(path);
824 ret = WRITE_STATUS_ITEM(b, SI_BASENAME, "%s\n", val? val : "");
825 if (ret < 0)
826 return ret;
827 val = para_dirname(path);
828 ret = WRITE_STATUS_ITEM(b, SI_DIRECTORY, "%s\n", val? val : "");
829 free(val);
830 return ret;
831 }
832
833 static int print_chunk_table(struct ls_data *d, struct para_buffer *b)
834 {
835 struct osl_object chunk_table_obj;
836 struct osl_row *aft_row;
837 int ret, i;
838 char *buf;
839
840 ret = aft_get_row_of_hash(d->hash, &aft_row);
841 if (ret < 0)
842 return ret;
843 ret = osl(osl_open_disk_object(audio_file_table, aft_row,
844 AFTCOL_CHUNKS, &chunk_table_obj));
845 if (ret < 0)
846 return ret;
847 ret = para_printf(b, "%s\n"
848 "chunk_time: %lu:%lu\nchunk_offsets: ",
849 d->path,
850 (long unsigned) d->afhi.chunk_tv.tv_sec,
851 (long unsigned) d->afhi.chunk_tv.tv_usec
852 );
853 if (ret < 0)
854 goto out;
855 buf = chunk_table_obj.data;
856 for (i = 0; i <= d->afhi.chunks_total; i++) {
857 ret = para_printf(b, "%u ", (unsigned) read_u32(buf + 4 * i));
858 if (ret < 0)
859 goto out;
860 }
861 ret = para_printf(b, "\n");
862 out:
863 osl_close_disk_object(&chunk_table_obj);
864 return ret;
865 }
866
867 static int write_score(struct para_buffer *b, struct ls_data *d,
868 struct ls_options *opts)
869 {
870 if (!(opts->flags & LS_FLAG_ADMISSIBLE_ONLY)) /* no score*/
871 return 0;
872 return WRITE_STATUS_ITEM(b, SI_SCORE, "%li\n", d->score);
873 }
874
875 static int print_list_item(struct ls_data *d, struct ls_options *opts,
876 struct para_buffer *b, time_t current_time)
877 {
878 int ret;
879 char att_buf[65];
880 char last_played_time[30];
881 char duration_buf[30]; /* nobody has an audio file long enough to overflow this */
882 struct afs_info *afsi = &d->afsi;
883 struct afh_info *afhi = &d->afhi;
884 char asc_hash[2 * HASH_SIZE + 1];
885
886 if (opts->mode == LS_MODE_SHORT) {
887 ret = para_printf(b, "%s\n", d->path);
888 goto out;
889 }
890 if (opts->mode == LS_MODE_CHUNKS) {
891 ret = print_chunk_table(d, b);
892 goto out;
893 }
894 get_attribute_bitmap(&afsi->attributes, att_buf);
895 if (opts->flags & LS_FLAG_UNIXDATE)
896 sprintf(last_played_time, "%llu",
897 (long long unsigned)afsi->last_played);
898 else {
899 ret = get_local_time(&afsi->last_played, last_played_time,
900 sizeof(last_played_time), current_time, opts->mode);
901 if (ret < 0)
902 goto out;
903 }
904 get_duration_buf(afhi->seconds_total, duration_buf, opts);
905 if (opts->mode == LS_MODE_LONG) {
906 struct ls_widths *w = &opts->widths;
907 if (opts->flags & LS_FLAG_ADMISSIBLE_ONLY) {
908 ret = para_printf(b, "%*li ",
909 opts->widths.score_width, d->score);
910 if (ret < 0)
911 goto out;
912 }
913 ret = para_printf(b,
914 "%s " /* attributes */
915 "%*u " /* amp */
916 "%*d " /* image_id */
917 "%*d " /* lyrics_id */
918 "%*d " /* bitrate */
919 "%*s " /* audio format */
920 "%*d " /* frequency */
921 "%d " /* channels */
922 "%s " /* duration */
923 "%*d " /* num_played */
924 "%s " /* last_played */
925 "%s\n", /* path */
926 att_buf,
927 w->amp_width, afsi->amp,
928 w->image_id_width, afsi->image_id,
929 w->lyrics_id_width, afsi->lyrics_id,
930 w->bitrate_width, afhi->bitrate,
931 w->audio_format_width,
932 audio_format_name(afsi->audio_format_id),
933 w->frequency_width, afhi->frequency,
934 afhi->channels,
935 duration_buf,
936 w->num_played_width, afsi->num_played,
937 last_played_time,
938 d->path
939 );
940 goto out;
941 }
942 if (opts->mode == LS_MODE_MBOX) {
943 const char *bn = para_basename(d->path);
944 ret = para_printf(b,
945 "From foo@localhost %s\n"
946 "Received: from\nTo: bar\nFrom: a\n"
947 "Subject: %s\n\n",
948 last_played_time,
949 bn? bn : "?");
950 if (ret < 0)
951 goto out;
952 }
953 ret = write_filename_items(b, d->path, opts->flags);
954 if (ret < 0)
955 goto out;
956 ret = write_score(b, d, opts);
957 if (ret < 0)
958 goto out;
959 ret = write_attribute_items(b, att_buf, afsi);
960 if (ret < 0)
961 goto out;
962 ret = write_image_items(b, afsi);
963 if (ret < 0)
964 goto out;
965 ret = write_lyrics_items(b, afsi);
966 if (ret < 0)
967 goto out;
968 hash_to_asc(d->hash, asc_hash);
969 ret = WRITE_STATUS_ITEM(b, SI_HASH, "%s\n", asc_hash);
970 if (ret < 0)
971 goto out;
972 ret = WRITE_STATUS_ITEM(b, SI_BITRATE, "%dkbit/s\n", afhi->bitrate);
973 if (ret < 0)
974 goto out;
975 ret = WRITE_STATUS_ITEM(b, SI_FORMAT, "%s\n",
976 audio_format_name(afsi->audio_format_id));
977 if (ret < 0)
978 goto out;
979 ret = WRITE_STATUS_ITEM(b, SI_FREQUENCY, "%dHz\n", afhi->frequency);
980 if (ret < 0)
981 goto out;
982 ret = WRITE_STATUS_ITEM(b, SI_CHANNELS, "%d\n", afhi->channels);
983 if (ret < 0)
984 goto out;
985 ret = WRITE_STATUS_ITEM(b, SI_DURATION, "%s\n", duration_buf);
986 if (ret < 0)
987 goto out;
988 ret = WRITE_STATUS_ITEM(b, SI_SECONDS_TOTAL, "%lu\n",
989 afhi->seconds_total);
990 if (ret < 0)
991 goto out;
992 ret = WRITE_STATUS_ITEM(b, SI_LAST_PLAYED, "%s\n", last_played_time);
993 if (ret < 0)
994 goto out;
995 ret = WRITE_STATUS_ITEM(b, SI_NUM_PLAYED, "%d\n", afsi->num_played);
996 if (ret < 0)
997 goto out;
998 ret = WRITE_STATUS_ITEM(b, SI_AMPLIFICATION, "%u\n", afsi->amp);
999 if (ret < 0)
1000 goto out;
1001 ret = WRITE_STATUS_ITEM(b, SI_CHUNK_TIME, "%lu\n",
1002 tv2ms(&afhi->chunk_tv));
1003 if (ret < 0)
1004 goto out;
1005 ret = WRITE_STATUS_ITEM(b, SI_NUM_CHUNKS, "%lu\n",
1006 afhi->chunks_total);
1007 if (ret < 0)
1008 goto out;
1009 ret = WRITE_STATUS_ITEM(b, SI_TECHINFO, "%s\n", afhi->techinfo);
1010 if (ret < 0)
1011 goto out;
1012 ret = WRITE_STATUS_ITEM(b, SI_ARTIST, "%s\n", afhi->tags.artist);
1013 if (ret < 0)
1014 goto out;
1015 ret = WRITE_STATUS_ITEM(b, SI_TITLE, "%s\n", afhi->tags.title);
1016 if (ret < 0)
1017 goto out;
1018 ret = WRITE_STATUS_ITEM(b, SI_YEAR, "%s\n", afhi->tags.year);
1019 if (ret < 0)
1020 goto out;
1021 ret = WRITE_STATUS_ITEM(b, SI_ALBUM, "%s\n", afhi->tags.album);
1022 if (ret < 0)
1023 goto out;
1024 ret = WRITE_STATUS_ITEM(b, SI_COMMENT, "%s\n", afhi->tags.comment);
1025 if (ret < 0)
1026 goto out;
1027 if (opts->mode == LS_MODE_MBOX) {
1028 struct osl_object lyrics_def;
1029 lyr_get_def_by_id(afsi->lyrics_id, &lyrics_def);
1030 if (lyrics_def.data) {
1031 ret = para_printf(b, "Lyrics:\n~~~~~~~\n%s",
1032 (char *)lyrics_def.data);
1033 osl_close_disk_object(&lyrics_def);
1034 }
1035 }
1036 out:
1037 return ret;
1038 }
1039
1040 static int make_status_items(struct audio_file_data *afd,
1041 struct afs_info *afsi, char *path, long score,
1042 unsigned char *hash)
1043 {
1044 struct ls_data d = {
1045 .afhi = afd->afhi,
1046 .afsi = *afsi,
1047 .path = path,
1048 .score = score,
1049 .hash = hash
1050 };
1051 struct ls_options opts = {
1052 .flags = LS_FLAG_FULL_PATH | LS_FLAG_ADMISSIBLE_ONLY,
1053 .mode = LS_MODE_VERBOSE,
1054 };
1055 struct para_buffer pb = {.max_size = shm_get_shmmax() - 1};
1056 time_t current_time;
1057 int ret;
1058
1059 time(&current_time);
1060 ret = print_list_item(&d, &opts, &pb, current_time);
1061 if (ret < 0)
1062 return ret;
1063 free(status_items);
1064 status_items = pb.buf;
1065 memset(&pb, 0, sizeof(pb));
1066 pb.max_size = shm_get_shmmax() - 1;
1067 pb.flags = PBF_SIZE_PREFIX;
1068 ret = print_list_item(&d, &opts, &pb, current_time);
1069 if (ret < 0) {
1070 free(status_items);
1071 status_items = NULL;
1072 return ret;
1073 }
1074 free(parser_friendly_status_items);
1075 parser_friendly_status_items = pb.buf;
1076 return 1;
1077 }
1078
1079 /**
1080 * Mmap the given audio file and update statistics.
1081 *
1082 * \param aft_row Determines the audio file to be opened and updated.
1083 * \param score The score of the audio file.
1084 * \param afd Result pointer.
1085 *
1086 * On success, the numplayed field of the audio file selector info is increased
1087 * and the lastplayed time is set to the current time. Finally, the score of
1088 * the audio file is updated.
1089 *
1090 * \return Positive shmid on success, negative on errors.
1091 */
1092 int open_and_update_audio_file(struct osl_row *aft_row, long score,
1093 struct audio_file_data *afd)
1094 {
1095 unsigned char *aft_hash, file_hash[HASH_SIZE];
1096 struct osl_object afsi_obj;
1097 struct afs_info old_afsi, new_afsi;
1098 int ret = get_hash_of_row(aft_row, &aft_hash);
1099 struct afsi_change_event_data aced;
1100 struct osl_object map, chunk_table_obj;
1101 char *path;
1102
1103 if (ret < 0)
1104 return ret;
1105 ret = get_audio_file_path_of_row(aft_row, &path);
1106 if (ret < 0)
1107 return ret;
1108 PARA_NOTICE_LOG("%s\n", path);
1109 ret = get_afsi_object_of_row(aft_row, &afsi_obj);
1110 if (ret < 0)
1111 return ret;
1112 ret = load_afsi(&old_afsi, &afsi_obj);
1113 if (ret < 0)
1114 return ret;
1115 ret = get_afhi_of_row(aft_row, &afd->afhi);
1116 if (ret < 0)
1117 return ret;
1118 afd->afhi.chunk_table = NULL;
1119 ret = osl(osl_open_disk_object(audio_file_table, aft_row,
1120 AFTCOL_CHUNKS, &chunk_table_obj));
1121 if (ret < 0)
1122 return ret;
1123 ret = mmap_full_file(path, O_RDONLY, &map.data, &map.size, &afd->fd);
1124 if (ret < 0)
1125 goto out;
1126 hash_function(map.data, map.size, file_hash);
1127 ret = hash_compare(file_hash, aft_hash);
1128 para_munmap(map.data, map.size);
1129 if (ret) {
1130 ret = -E_HASH_MISMATCH;
1131 goto out;
1132 }
1133 new_afsi = old_afsi;
1134 new_afsi.num_played++;
1135 new_afsi.last_played = time(NULL);
1136 save_afsi(&new_afsi, &afsi_obj); /* in-place update */
1137
1138 afd->audio_format_id = old_afsi.audio_format_id;
1139 load_chunk_table(&afd->afhi, chunk_table_obj.data);
1140 ret = make_status_items(afd, &old_afsi, path, score, file_hash);
1141 if (ret < 0)
1142 goto out;
1143 aced.aft_row = aft_row;
1144 aced.old_afsi = &old_afsi;
1145 afs_event(AFSI_CHANGE, NULL, &aced);
1146 ret = save_afd(afd);
1147 out:
1148 free(afd->afhi.chunk_table);
1149 osl_close_disk_object(&chunk_table_obj);
1150 if (ret < 0)
1151 PARA_ERROR_LOG("%s: %s\n", path, para_strerror(-ret));
1152 return ret;
1153 }
1154
1155 static int ls_audio_format_compare(const void *a, const void *b)
1156 {
1157 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1158 return NUM_COMPARE(d1->afsi.audio_format_id, d2->afsi.audio_format_id);
1159 }
1160
1161 static int ls_duration_compare(const void *a, const void *b)
1162 {
1163 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1164 return NUM_COMPARE(d1->afhi.seconds_total, d2->afhi.seconds_total);
1165 }
1166
1167 static int ls_bitrate_compare(const void *a, const void *b)
1168 {
1169 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1170 return NUM_COMPARE(d1->afhi.bitrate, d2->afhi.bitrate);
1171 }
1172
1173 static int ls_lyrics_id_compare(const void *a, const void *b)
1174 {
1175 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1176 return NUM_COMPARE(d1->afsi.lyrics_id, d2->afsi.lyrics_id);
1177 }
1178
1179 static int ls_image_id_compare(const void *a, const void *b)
1180 {
1181 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1182 return NUM_COMPARE(d1->afsi.image_id, d2->afsi.image_id);
1183 }
1184
1185 static int ls_channels_compare(const void *a, const void *b)
1186 {
1187 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1188 return NUM_COMPARE(d1->afhi.channels, d2->afhi.channels);
1189 }
1190
1191 static int ls_frequency_compare(const void *a, const void *b)
1192 {
1193 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1194 return NUM_COMPARE(d1->afhi.frequency, d2->afhi.frequency);
1195 }
1196
1197 static int ls_num_played_compare(const void *a, const void *b)
1198 {
1199 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1200 return NUM_COMPARE(d1->afsi.num_played, d2->afsi.num_played);
1201 }
1202
1203 static int ls_last_played_compare(const void *a, const void *b)
1204 {
1205 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1206 return NUM_COMPARE(d1->afsi.last_played, d2->afsi.last_played);
1207 }
1208
1209 static int ls_score_compare(const void *a, const void *b)
1210 {
1211 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1212 return NUM_COMPARE(d1->score, d2->score);
1213 }
1214
1215 static int ls_path_compare(const void *a, const void *b)
1216 {
1217 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1218 return strcmp(d1->path, d2->path);
1219 }
1220
1221 static int sort_matching_paths(struct ls_options *options)
1222 {
1223 size_t nmemb = options->num_matching_paths;
1224 size_t size = sizeof(*options->data_ptr);
1225 int (*compar)(const void *, const void *);
1226 int i;
1227
1228 options->data_ptr = para_malloc(nmemb * sizeof(*options->data_ptr));
1229 for (i = 0; i < nmemb; i++)
1230 options->data_ptr[i] = options->data + i;
1231
1232 /* In these cases the array is already sorted */
1233 if (options->sorting == LS_SORT_BY_PATH
1234 && !(options->flags & LS_FLAG_ADMISSIBLE_ONLY)
1235 && (options->flags & LS_FLAG_FULL_PATH))
1236 return 1;
1237 if (options->sorting == LS_SORT_BY_SCORE &&
1238 options->flags & LS_FLAG_ADMISSIBLE_ONLY)
1239 return 1;
1240
1241 switch (options->sorting) {
1242 case LS_SORT_BY_PATH:
1243 compar = ls_path_compare; break;
1244 case LS_SORT_BY_SCORE:
1245 compar = ls_score_compare; break;
1246 case LS_SORT_BY_LAST_PLAYED:
1247 compar = ls_last_played_compare; break;
1248 case LS_SORT_BY_NUM_PLAYED:
1249 compar = ls_num_played_compare; break;
1250 case LS_SORT_BY_FREQUENCY:
1251 compar = ls_frequency_compare; break;
1252 case LS_SORT_BY_CHANNELS:
1253 compar = ls_channels_compare; break;
1254 case LS_SORT_BY_IMAGE_ID:
1255 compar = ls_image_id_compare; break;
1256 case LS_SORT_BY_LYRICS_ID:
1257 compar = ls_lyrics_id_compare; break;
1258 case LS_SORT_BY_BITRATE:
1259 compar = ls_bitrate_compare; break;
1260 case LS_SORT_BY_DURATION:
1261 compar = ls_duration_compare; break;
1262 case LS_SORT_BY_AUDIO_FORMAT:
1263 compar = ls_audio_format_compare; break;
1264 default:
1265 return -E_BAD_SORT;
1266 }
1267 qsort(options->data_ptr, nmemb, size, compar);
1268 return 1;
1269 }
1270
1271 /* row is either an aft_row or a row of the score table */
1272 /* TODO: Only compute widths if we need them */
1273 static int prepare_ls_row(struct osl_row *row, void *ls_opts)
1274 {
1275 int ret, i;
1276 struct ls_options *options = ls_opts;
1277 struct ls_data *d;
1278 struct ls_widths *w;
1279 unsigned short num_digits;
1280 unsigned tmp;
1281 struct osl_row *aft_row;
1282 long score;
1283 char *path;
1284
1285 if (options->flags & LS_FLAG_ADMISSIBLE_ONLY) {
1286 ret = get_score_and_aft_row(row, &score, &aft_row);
1287 if (ret < 0)
1288 return ret;
1289 } else {
1290 aft_row = row;
1291 score = 0;
1292 }
1293 ret = get_audio_file_path_of_row(aft_row, &path);
1294 if (ret < 0)
1295 return ret;
1296 if (!(options->flags & LS_FLAG_FULL_PATH)) {
1297 char *p = strrchr(path, '/');
1298 if (p)
1299 path = p + 1;
1300 }
1301 if (options->num_patterns) {
1302 for (i = 0; i < options->num_patterns; i++) {
1303 ret = fnmatch(options->patterns[i], path, 0);
1304 if (!ret)
1305 break;
1306 if (ret == FNM_NOMATCH)
1307 continue;
1308 return -E_FNMATCH;
1309 }
1310 if (i >= options->num_patterns) /* no match */
1311 return 1;
1312 }
1313 tmp = options->num_matching_paths++;
1314 if (options->num_matching_paths > options->array_size) {
1315 options->array_size++;
1316 options->array_size *= 2;
1317 options->data = para_realloc(options->data, options->array_size
1318 * sizeof(*options->data));
1319 }
1320 d = options->data + tmp;
1321 ret = get_afsi_of_row(aft_row, &d->afsi);
1322 if (ret < 0)
1323 return ret;
1324 ret = get_afhi_of_row(aft_row, &d->afhi);
1325 if (ret < 0)
1326 return ret;
1327 d->path = path;
1328 ret = get_hash_of_row(aft_row, &d->hash);
1329 if (ret < 0)
1330 goto err;
1331 w = &options->widths;
1332 GET_NUM_DIGITS(d->afsi.image_id, &num_digits);
1333 w->image_id_width = PARA_MAX(w->image_id_width, num_digits);
1334 GET_NUM_DIGITS(d->afsi.lyrics_id, &num_digits);
1335 w->lyrics_id_width = PARA_MAX(w->lyrics_id_width, num_digits);
1336 GET_NUM_DIGITS(d->afhi.bitrate, &num_digits);
1337 w->bitrate_width = PARA_MAX(w->bitrate_width, num_digits);
1338 GET_NUM_DIGITS(d->afhi.frequency, &num_digits);
1339 w->frequency_width = PARA_MAX(w->frequency_width, num_digits);
1340 GET_NUM_DIGITS(d->afsi.num_played, &num_digits);
1341 w->num_played_width = PARA_MAX(w->num_played_width, num_digits);
1342 /* get the number of chars to print this amount of time */
1343 num_digits = get_duration_width(d->afhi.seconds_total);
1344 w->duration_width = PARA_MAX(w->duration_width, num_digits);
1345 GET_NUM_DIGITS(d->afsi.amp, &num_digits);
1346 w->amp_width = PARA_MAX(w->amp_width, num_digits);
1347 num_digits = strlen(audio_format_name(d->afsi.audio_format_id));
1348 w->audio_format_width = PARA_MAX(w->audio_format_width, num_digits);
1349 if (options->flags & LS_FLAG_ADMISSIBLE_ONLY) {
1350 GET_NUM_DIGITS(score, &num_digits);
1351 num_digits++; /* add one for the sign (space or "-") */
1352 w->score_width = PARA_MAX(w->score_width, num_digits);
1353 d->score = score;
1354 }
1355 return 1;
1356 err:
1357 return ret;
1358 }
1359
1360 static void com_ls_callback(int fd, const struct osl_object *query)
1361 {
1362 struct ls_options *opts = query->data;
1363 char *p, *pattern_start = (char *)query->data + sizeof(*opts);
1364 struct para_buffer b = {
1365 .max_size = shm_get_shmmax(),
1366 .flags = (opts->mode == LS_MODE_PARSER)? PBF_SIZE_PREFIX : 0,
1367 .max_size_handler = afs_max_size_handler,
1368 .private_data = &(struct afs_max_size_handler_data) {
1369 .fd = fd,
1370 .band = SBD_OUTPUT
1371 }
1372 };
1373 int i = 0, ret;
1374 time_t current_time;
1375
1376 if (opts->num_patterns) {
1377 opts->patterns = para_malloc(opts->num_patterns * sizeof(char *));
1378 for (i = 0, p = pattern_start; i < opts->num_patterns; i++) {
1379 opts->patterns[i] = p;
1380 p += strlen(p) + 1;
1381 }
1382 } else
1383 opts->patterns = NULL;
1384 if (opts->flags & LS_FLAG_ADMISSIBLE_ONLY)
1385 ret = admissible_file_loop(opts, prepare_ls_row);
1386 else
1387 ret = osl(osl_rbtree_loop(audio_file_table, AFTCOL_PATH, opts,
1388 prepare_ls_row));
1389 if (ret < 0)
1390 goto out;
1391 if (opts->num_matching_paths == 0) {
1392 if (opts->num_patterns > 0)
1393 para_printf(&b, "no matches\n");
1394 goto out;
1395 }
1396 ret = sort_matching_paths(opts);
1397 if (ret < 0)
1398 goto out;
1399 time(&current_time);
1400 if (opts->flags & LS_FLAG_REVERSE)
1401 for (i = opts->num_matching_paths - 1; i >= 0; i--) {
1402 ret = print_list_item(opts->data_ptr[i], opts, &b, current_time);
1403 if (ret < 0)
1404 goto out;
1405 }
1406 else
1407 for (i = 0; i < opts->num_matching_paths; i++) {
1408 ret = print_list_item(opts->data_ptr[i], opts, &b, current_time);
1409 if (ret < 0)
1410 goto out;
1411 }
1412 out:
1413 if (b.offset)
1414 pass_buffer_as_shm(fd, SBD_OUTPUT, b.buf, b.offset);
1415 free(b.buf);
1416 free(opts->data);
1417 free(opts->data_ptr);
1418 free(opts->patterns);
1419 }
1420
1421 /*
1422 * TODO: flags -h (sort by hash)
1423 */
1424 int com_ls(struct command_context *cc)
1425 {
1426 int i, ret;
1427 unsigned flags = 0;
1428 enum ls_sorting_method sort = LS_SORT_BY_PATH;
1429 enum ls_listing_mode mode = LS_MODE_SHORT;
1430 struct ls_options opts = {.patterns = NULL};
1431 struct osl_object query = {.data = &opts, .size = sizeof(opts)};
1432
1433 for (i = 1; i < cc->argc; i++) {
1434 const char *arg = cc->argv[i];
1435 if (arg[0] != '-')
1436 break;
1437 if (!strcmp(arg, "--")) {
1438 i++;
1439 break;
1440 }
1441 if (!strncmp(arg, "-l", 2)) {
1442 if (!*(arg + 2)) {
1443 mode = LS_MODE_LONG;
1444 continue;
1445 }
1446 if (*(arg + 3))
1447 return -E_AFT_SYNTAX;
1448 switch(*(arg + 2)) {
1449 case 's':
1450 mode = LS_MODE_SHORT;
1451 continue;
1452 case 'l':
1453 mode = LS_MODE_LONG;
1454 continue;
1455 case 'v':
1456 mode = LS_MODE_VERBOSE;
1457 continue;
1458 case 'm':
1459 mode = LS_MODE_MBOX;
1460 continue;
1461 case 'c':
1462 mode = LS_MODE_CHUNKS;
1463 continue;
1464 case 'p':
1465 mode = LS_MODE_PARSER;
1466 continue;
1467 default:
1468 return -E_AFT_SYNTAX;
1469 }
1470 }
1471 if (!strcmp(arg, "-p")) {
1472 flags |= LS_FLAG_FULL_PATH;
1473 continue;
1474 }
1475 if (!strcmp(arg, "-a")) {
1476 flags |= LS_FLAG_ADMISSIBLE_ONLY;
1477 continue;
1478 }
1479 if (!strcmp(arg, "-r")) {
1480 flags |= LS_FLAG_REVERSE;
1481 continue;
1482 }
1483 if (!strcmp(arg, "-d")) {
1484 flags |= LS_FLAG_UNIXDATE;
1485 continue;
1486 }
1487 if (!strncmp(arg, "-s", 2)) {
1488 if (!*(arg + 2) || *(arg + 3))
1489 return -E_AFT_SYNTAX;
1490 switch(*(arg + 2)) {
1491 case 'p':
1492 sort = LS_SORT_BY_PATH;
1493 continue;
1494 case 's': /* -ss implies -a */
1495 sort = LS_SORT_BY_SCORE;
1496 flags |= LS_FLAG_ADMISSIBLE_ONLY;
1497 continue;
1498 case 'l':
1499 sort = LS_SORT_BY_LAST_PLAYED;
1500 continue;
1501 case 'n':
1502 sort = LS_SORT_BY_NUM_PLAYED;
1503 continue;
1504 case 'f':
1505 sort = LS_SORT_BY_FREQUENCY;
1506 continue;
1507 case 'c':
1508 sort = LS_SORT_BY_CHANNELS;
1509 continue;
1510 case 'i':
1511 sort = LS_SORT_BY_IMAGE_ID;
1512 continue;
1513 case 'y':
1514 sort = LS_SORT_BY_LYRICS_ID;
1515 continue;
1516 case 'b':
1517 sort = LS_SORT_BY_BITRATE;
1518 continue;
1519 case 'd':
1520 sort = LS_SORT_BY_DURATION;
1521 continue;
1522 case 'a':
1523 sort = LS_SORT_BY_AUDIO_FORMAT;
1524 continue;
1525 default:
1526 return -E_AFT_SYNTAX;
1527 }
1528 }
1529 return -E_AFT_SYNTAX;
1530 }
1531 opts.flags = flags;
1532 opts.sorting = sort;
1533 opts.mode = mode;
1534 opts.num_patterns = cc->argc - i;
1535 ret = send_option_arg_callback_request(&query, opts.num_patterns,
1536 cc->argv + i, com_ls_callback, afs_cb_result_handler, cc);
1537 return ret;
1538 }
1539
1540 /**
1541 * Call the given function for each file in the audio file table.
1542 *
1543 * \param private_data An arbitrary data pointer, passed to \a func.
1544 * \param func The custom function to be called.
1545 *
1546 * \return Standard.
1547 */
1548 int audio_file_loop(void *private_data, osl_rbtree_loop_func *func)
1549 {
1550 return osl(osl_rbtree_loop(audio_file_table, AFTCOL_HASH, private_data,
1551 func));
1552 }
1553
1554 static struct osl_row *find_hash_sister(unsigned char *hash)
1555 {
1556 const struct osl_object obj = {.data = hash, .size = HASH_SIZE};
1557 struct osl_row *row;
1558
1559 osl_get_row(audio_file_table, AFTCOL_HASH, &obj, &row);
1560 return row;
1561 }
1562
1563 /** The format of the data stored by save_audio_file_data(). */
1564 enum com_add_buffer_offsets {
1565 /** afhi (if present) starts here. */
1566 CAB_AFHI_OFFSET_POS = 0,
1567 /** Start of the chunk table (if present). */
1568 CAB_CHUNKS_OFFSET_POS = 2,
1569 /** Audio format id. */
1570 CAB_AUDIO_FORMAT_OFFSET = 4,
1571 /** Flags given to the add command. */
1572 CAB_FLAGS_OFFSET = 5,
1573 /** The hash of the audio file being added. */
1574 CAB_HASH_OFFSET = 9,
1575 /** Start of the path of the audio file. */
1576 CAB_PATH_OFFSET = (CAB_HASH_OFFSET + HASH_SIZE),
1577 };
1578
1579 /*
1580 * Store the given data to a single buffer. Doesn't need the audio file selector
1581 * info struct as the server knows it as well.
1582 *
1583 * It's OK to call this with afhi == NULL. In this case, the audio format
1584 * handler info won't be stored in the buffer.
1585 */
1586 static void save_add_callback_buffer(unsigned char *hash, const char *path,
1587 struct afh_info *afhi, uint32_t flags,
1588 uint8_t audio_format_num, struct osl_object *obj)
1589 {
1590 size_t path_len = strlen(path) + 1;
1591 size_t afhi_size = sizeof_afhi_buf(afhi);
1592 size_t size = CAB_PATH_OFFSET + path_len + afhi_size
1593 + sizeof_chunk_table(afhi);
1594 char *buf = para_malloc(size);
1595 uint16_t pos;
1596
1597 write_u8(buf + CAB_AUDIO_FORMAT_OFFSET, audio_format_num);
1598 write_u32(buf + CAB_FLAGS_OFFSET, flags);
1599
1600 memcpy(buf + CAB_HASH_OFFSET, hash, HASH_SIZE);
1601 strcpy(buf + CAB_PATH_OFFSET, path);
1602
1603 pos = CAB_PATH_OFFSET + path_len;
1604 PARA_DEBUG_LOG("size: %zu, afhi starts at %d\n", size, pos);
1605 PARA_DEBUG_LOG("last afhi byte: %p, pos %zu\n", buf + pos + afhi_size - 1,
1606 pos + afhi_size - 1);
1607 write_u16(buf + CAB_AFHI_OFFSET_POS, pos);
1608 save_afhi(afhi, buf + pos);
1609
1610 pos += afhi_size;
1611 PARA_DEBUG_LOG("size: %zu, chunks start at %d\n", size, pos);
1612 write_u16(buf + CAB_CHUNKS_OFFSET_POS, pos);
1613 if (afhi)
1614 save_chunk_table(afhi, buf + pos);
1615 PARA_DEBUG_LOG("last byte in buf: %p\n", buf + size - 1);
1616 obj->data = buf;
1617 obj->size = size;
1618 }
1619
1620 /*
1621
1622 Overview of the add command.
1623
1624 Input: What was passed to the callback by the command handler.
1625 ~~~~~~
1626 HS: Hash sister. Whether an audio file with identical hash
1627 already exists in the osl database.
1628
1629 PB: Path brother. Whether a file with the given path exists
1630 in the table.
1631
1632 F: Force flag given. Whether add was called with -f.
1633
1634 output: Action performed by the callback.
1635 ~~~~~~~
1636 AFHI: Whether afhi and chunk table are computed and sent.
1637 ACTION: Table modifications to be done by the callback.
1638
1639 +----+----+---+------+---------------------------------------------------+
1640 | HS | PB | F | AFHI | ACTION
1641 +----+----+---+------+---------------------------------------------------+
1642 | Y | Y | Y | Y | if HS != PB: remove PB. HS: force afhi update,
1643 | | update path, keep afsi
1644 +----+----+---+------+---------------------------------------------------+
1645 | Y | Y | N | N | if HS == PB: do not send callback request at all.
1646 | | otherwise: remove PB, HS: update path, keep afhi,
1647 | | afsi.
1648 +----+----+---+------+---------------------------------------------------+
1649 | Y | N | Y | Y | (rename) force afhi update of HS, update path of
1650 | | HS, keep afsi
1651 +----+----+---+------+---------------------------------------------------+
1652 | Y | N | N | N | (file rename) update path of HS, keep afsi, afhi
1653 +----+----+---+------+---------------------------------------------------+
1654 | N | Y | Y | Y | (file change) update afhi, hash, of PB, keep afsi
1655 | | (force has no effect)
1656 +----+----+---+------+---------------------------------------------------+
1657 | N | Y | N | Y | (file change) update afhi, hash of PB, keep afsi
1658 +----+----+---+------+---------------------------------------------------+
1659 | N | N | Y | Y | (new file) create new entry (force has no effect)
1660 +----+----+---+------+---------------------------------------------------+
1661 | N | N | N | Y | (new file) create new entry
1662 +----+----+---+------+---------------------------------------------------+
1663
1664 Notes:
1665
1666 afhi <=> force or no HS
1667 F => AFHI
1668
1669 */
1670
1671 /** Flags passed to the add command. */
1672 enum com_add_flags {
1673 /** Skip paths that exist already. */
1674 ADD_FLAG_LAZY = 1,
1675 /** Force adding. */
1676 ADD_FLAG_FORCE = 2,
1677 /** Print what is being done. */
1678 ADD_FLAG_VERBOSE = 4,
1679 /** Try to add files with unknown suffixes. */
1680 ADD_FLAG_ALL = 8,
1681 };
1682
1683 static void com_add_callback(int fd, const struct osl_object *query)
1684 {
1685 char *buf = query->data, *path;
1686 struct osl_row *pb, *aft_row;
1687 struct osl_row *hs;
1688 struct osl_object objs[NUM_AFT_COLUMNS];
1689 unsigned char *hash;
1690 char asc[2 * HASH_SIZE + 1];
1691 int ret;
1692 char afsi_buf[AFSI_SIZE];
1693 uint32_t flags = read_u32(buf + CAB_FLAGS_OFFSET);
1694 struct afs_info default_afsi = {.last_played = 0};
1695 struct para_buffer msg = {
1696 .max_size = shm_get_shmmax(),
1697 .max_size_handler = afs_max_size_handler,
1698 .private_data = &(struct afs_max_size_handler_data) {
1699 .fd = fd,
1700 .band = SBD_OUTPUT
1701 }
1702 };
1703 uint16_t afhi_offset, chunks_offset;
1704
1705 hash = (unsigned char *)buf + CAB_HASH_OFFSET;
1706 hash_to_asc(hash, asc);
1707 objs[AFTCOL_HASH].data = buf + CAB_HASH_OFFSET;
1708 objs[AFTCOL_HASH].size = HASH_SIZE;
1709
1710 path = buf + CAB_PATH_OFFSET;
1711 objs[AFTCOL_PATH].data = path;
1712 objs[AFTCOL_PATH].size = strlen(path) + 1;
1713
1714 PARA_INFO_LOG("request to add %s\n", path);
1715 hs = find_hash_sister(hash);
1716 ret = aft_get_row_of_path(path, &pb);
1717 if (ret < 0 && ret != -OSL_ERRNO_TO_PARA_ERROR(E_OSL_RB_KEY_NOT_FOUND))
1718 goto out;
1719 if (hs && pb && hs == pb && !(flags & ADD_FLAG_FORCE)) {
1720 if (flags & ADD_FLAG_VERBOSE)
1721 ret = para_printf(&msg, "ignoring duplicate\n");
1722 else
1723 ret = 1;
1724 goto out;
1725 }
1726 if (hs && hs != pb) {
1727 struct osl_object obj;
1728 if (pb) { /* hs trumps pb, remove pb */
1729 if (flags & ADD_FLAG_VERBOSE) {
1730 ret = para_printf(&msg, "removing %s\n", path);
1731 if (ret < 0)
1732 goto out;
1733 }
1734 afs_event(AUDIO_FILE_REMOVE, &msg, pb);
1735 ret = osl(osl_del_row(audio_file_table, pb));
1736 if (ret < 0)
1737 goto out;
1738 pb = NULL;
1739 }
1740 /* file rename, update hs' path */
1741 if (flags & ADD_FLAG_VERBOSE) {
1742 ret = osl(osl_get_object(audio_file_table, hs,
1743 AFTCOL_PATH, &obj));
1744 if (ret < 0)
1745 goto out;
1746 ret = para_printf(&msg, "renamed from %s\n", (char *)obj.data);
1747 if (ret < 0)
1748 goto out;
1749 }
1750 ret = osl(osl_update_object(audio_file_table, hs, AFTCOL_PATH,
1751 &objs[AFTCOL_PATH]));
1752 if (ret < 0)
1753 goto out;
1754 afs_event(AUDIO_FILE_RENAME, &msg, hs);
1755 if (!(flags & ADD_FLAG_FORCE))
1756 goto out;
1757 }
1758 /* no hs or force mode, child must have sent afhi */
1759 afhi_offset = read_u16(buf + CAB_AFHI_OFFSET_POS);
1760 chunks_offset = read_u16(buf + CAB_CHUNKS_OFFSET_POS);
1761
1762 objs[AFTCOL_AFHI].data = buf + afhi_offset;
1763 objs[AFTCOL_AFHI].size = chunks_offset - afhi_offset;
1764 ret = -E_NO_AFHI;
1765 if (!objs[AFTCOL_AFHI].size) /* "impossible" */
1766 goto out;
1767 objs[AFTCOL_CHUNKS].data = buf + chunks_offset;
1768 objs[AFTCOL_CHUNKS].size = query->size - chunks_offset;
1769 if (pb && !hs) { /* update pb's hash */
1770 char old_asc[2 * HASH_SIZE + 1];
1771 unsigned char *old_hash;
1772 ret = get_hash_of_row(pb, &old_hash);
1773 if (ret < 0)
1774 goto out;
1775 hash_to_asc(old_hash, old_asc);
1776 if (flags & ADD_FLAG_VERBOSE) {
1777 ret = para_printf(&msg, "file change: %s -> %s\n",
1778 old_asc, asc);
1779 if (ret < 0)
1780 goto out;
1781 }
1782 ret = osl_update_object(audio_file_table, pb, AFTCOL_HASH,
1783 &objs[AFTCOL_HASH]);
1784 if (ret < 0)
1785 goto out;
1786 }
1787 if (hs || pb) { /* (hs != NULL and pb != NULL) implies hs == pb */
1788 struct osl_row *row = pb? pb : hs;
1789 /* update afhi and chunk_table */
1790 if (flags & ADD_FLAG_VERBOSE) {
1791 ret = para_printf(&msg, "updating afhi and chunk table\n");
1792 if (ret < 0)
1793 goto out;
1794 }
1795 ret = osl(osl_update_object(audio_file_table, row, AFTCOL_AFHI,
1796 &objs[AFTCOL_AFHI]));
1797 if (ret < 0)
1798 goto out;
1799 ret = osl(osl_update_object(audio_file_table, row, AFTCOL_CHUNKS,
1800 &objs[AFTCOL_CHUNKS]));
1801 if (ret < 0)
1802 goto out;
1803 afs_event(AFHI_CHANGE, &msg, row);
1804 goto out;
1805 }
1806 /* new entry, use default afsi */
1807 if (flags & ADD_FLAG_VERBOSE) {
1808 ret = para_printf(&msg, "new file\n");
1809 if (ret < 0)
1810 goto out;
1811 }
1812 default_afsi.last_played = time(NULL) - 365 * 24 * 60 * 60;
1813 default_afsi.audio_format_id = read_u8(buf + CAB_AUDIO_FORMAT_OFFSET);
1814
1815 objs[AFTCOL_AFSI].data = &afsi_buf;
1816 objs[AFTCOL_AFSI].size = AFSI_SIZE;
1817 save_afsi(&default_afsi, &objs[AFTCOL_AFSI]);
1818 ret = osl(osl_add_and_get_row(audio_file_table, objs, &aft_row));
1819 afs_event(AUDIO_FILE_ADD, &msg, aft_row);
1820 out:
1821 if (ret < 0)
1822 para_printf(&msg, "%s\n", para_strerror(-ret));
1823 if (msg.offset)
1824 pass_buffer_as_shm(fd, SBD_OUTPUT, msg.buf, msg.offset);
1825 free(msg.buf);
1826 }
1827
1828 /** Used by com_add(). */
1829 struct private_add_data {
1830 /** The pointer passed to the original command handler. */
1831 struct command_context *cc;
1832 /** The given add flags. */
1833 uint32_t flags;
1834 };
1835
1836 static void path_brother_callback(int fd, const struct osl_object *query)
1837 {
1838 char *path = query->data;
1839 struct osl_row *path_brother;
1840 int ret = aft_get_row_of_path(path, &path_brother);
1841 if (ret < 0)
1842 return;
1843 pass_buffer_as_shm(fd, SBD_OUTPUT, (char *)&path_brother,
1844 sizeof(path_brother));
1845 }
1846
1847 static void hash_sister_callback(int fd, const struct osl_object *query)
1848 {
1849 unsigned char *hash = query->data;
1850 struct osl_row *hash_sister;
1851
1852 hash_sister = find_hash_sister(hash);
1853 if (!hash_sister)
1854 return;
1855 pass_buffer_as_shm(fd, SBD_OUTPUT, (char *)&hash_sister,
1856 sizeof(hash_sister));
1857 }
1858
1859 static int get_row_pointer_from_result(struct osl_object *result,
1860 __a_unused uint8_t band, void *private)
1861 {
1862 struct osl_row **row = private;
1863 *row = *(struct osl_row **)(result->data);
1864 return 1;
1865 }
1866
1867 static int add_one_audio_file(const char *path, void *private_data)
1868 {
1869 int ret, send_ret = 1, fd;
1870 uint8_t format_num = -1;
1871 struct private_add_data *pad = private_data;
1872 struct afh_info afhi, *afhi_ptr = NULL;
1873 struct osl_row *pb = NULL, *hs = NULL; /* path brother/hash sister */
1874 struct osl_object map, obj = {.data = NULL}, query;
1875 unsigned char hash[HASH_SIZE];
1876
1877 ret = guess_audio_format(path);
1878 if (ret < 0 && !(pad->flags & ADD_FLAG_ALL))
1879 goto out_free;
1880 query.data = (char *)path;
1881 query.size = strlen(path) + 1;
1882 ret = send_callback_request(path_brother_callback, &query,
1883 get_row_pointer_from_result, &pb);
1884 if (ret < 0 && ret != -OSL_ERRNO_TO_PARA_ERROR(E_OSL_RB_KEY_NOT_FOUND))
1885 goto out_free;
1886 ret = 1;
1887 if (pb && (pad->flags & ADD_FLAG_LAZY)) { /* lazy is really cheap */
1888 if (pad->flags & ADD_FLAG_VERBOSE)
1889 send_ret = send_sb_va(&pad->cc->scc, SBD_OUTPUT,
1890 "lazy-ignore: %s\n", path);
1891 goto out_free;
1892 }
1893 /* We still want to add this file. Compute its hash. */
1894 ret = mmap_full_file(path, O_RDONLY, &map.data, &map.size, &fd);
1895 if (ret < 0)
1896 goto out_free;
1897 hash_function(map.data, map.size, hash);
1898
1899 /* Check whether the database contains a file with the same hash. */
1900 query.data = hash;
1901 query.size = HASH_SIZE;
1902 ret = send_callback_request(hash_sister_callback, &query,
1903 get_row_pointer_from_result, &hs);
1904 if (ret < 0)
1905 goto out_unmap;
1906 /* Return success if we already know this file. */
1907 ret = 1;
1908 if (pb && hs && hs == pb && !(pad->flags & ADD_FLAG_FORCE)) {
1909 if (pad->flags & ADD_FLAG_VERBOSE)
1910 send_ret = send_sb_va(&pad->cc->scc, SBD_OUTPUT,
1911 "%s exists, not forcing update\n", path);
1912 goto out_unmap;
1913 }
1914 /*
1915 * We won't recalculate the audio format info and the chunk table if
1916 * there is a hash sister and FORCE was not given.
1917 */
1918 if (!hs || (pad->flags & ADD_FLAG_FORCE)) {
1919 ret = compute_afhi(path, map.data, map.size, fd, &afhi);
1920 if (ret < 0)
1921 goto out_unmap;
1922 format_num = ret;
1923 afhi_ptr = &afhi;
1924 }
1925 munmap(map.data, map.size);
1926 close(fd);
1927 if (pad->flags & ADD_FLAG_VERBOSE) {
1928 send_ret = send_sb_va(&pad->cc->scc, SBD_OUTPUT,
1929 "adding %s\n", path);
1930 if (send_ret < 0)
1931 goto out_free;
1932 }
1933 save_add_callback_buffer(hash, path, afhi_ptr, pad->flags, format_num, &obj);
1934 /* Ask afs to consider this entry for adding. */
1935 ret = send_callback_request(com_add_callback, &obj,
1936 afs_cb_result_handler, pad->cc);
1937 goto out_free;
1938
1939 out_unmap:
1940 close(fd);
1941 munmap(map.data, map.size);
1942 out_free:
1943 if (ret < 0 && send_ret >= 0)
1944 send_ret = send_sb_va(&pad->cc->scc, SBD_ERROR_LOG,
1945 "failed to add %s (%s)\n", path, para_strerror(-ret));
1946 free(obj.data);
1947 clear_afhi(afhi_ptr);
1948 /* Stop adding files only on send errors. */
1949 return send_ret;
1950 }
1951
1952 int com_add(struct command_context *cc)
1953 {
1954 int i, ret;
1955 struct private_add_data pad = {.cc = cc, .flags = 0};
1956 struct stat statbuf;
1957
1958 for (i = 1; i < cc->argc; i++) {
1959 const char *arg = cc->argv[i];
1960 if (arg[0] != '-')
1961 break;
1962 if (!strcmp(arg, "--")) {
1963 i++;
1964 break;
1965 }
1966 if (!strcmp(arg, "-a")) {
1967 pad.flags |= ADD_FLAG_ALL;
1968 continue;
1969 }
1970 if (!strcmp(arg, "-l")) {
1971 pad.flags |= ADD_FLAG_LAZY;
1972 continue;
1973 }
1974 if (!strcmp(arg, "-f")) {
1975 pad.flags |= ADD_FLAG_FORCE;
1976 continue;
1977 }
1978 if (!strcmp(arg, "-v")) {
1979 pad.flags |= ADD_FLAG_VERBOSE;
1980 continue;
1981 }
1982 }
1983 if (cc->argc <= i)
1984 return -E_AFT_SYNTAX;
1985 for (; i < cc->argc; i++) {
1986 char *path;
1987 ret = verify_path(cc->argv[i], &path);
1988 if (ret < 0) {
1989 ret = send_sb_va(&cc->scc, SBD_ERROR_LOG, "%s: %s\n",
1990 cc->argv[i], para_strerror(-ret));
1991 if (ret < 0)
1992 return ret;
1993 continue;
1994 }
1995 ret = stat(path, &statbuf);
1996 if (ret < 0) {
1997 ret = send_sb_va(&cc->scc, SBD_ERROR_LOG,
1998 "failed to stat %s (%s)\n", path,
1999 strerror(errno));
2000 free(path);
2001 if (ret < 0)
2002 return ret;
2003 continue;
2004 }
2005 if (S_ISDIR(statbuf.st_mode))
2006 ret = for_each_file_in_dir(path, add_one_audio_file,
2007 &pad);
2008 else
2009 ret = add_one_audio_file(path, &pad);
2010 if (ret < 0) {
2011 send_sb_va(&cc->scc, SBD_OUTPUT, "%s: %s\n", path,
2012 para_strerror(-ret));
2013 free(path);
2014 return ret;
2015 }
2016 free(path);
2017 }
2018 return 1;
2019 }
2020
2021 /**
2022 * Flags used by the touch command.
2023 *
2024 * \sa com_touch().
2025 */
2026 enum touch_flags {
2027 /** Whether the \p FNM_PATHNAME flag should be passed to fnmatch(). */
2028 TOUCH_FLAG_FNM_PATHNAME = 1,
2029 /** Activates verbose mode. */
2030 TOUCH_FLAG_VERBOSE = 2
2031 };
2032
2033 /** Options used by com_touch(). */
2034 struct com_touch_options {
2035 /** New num_played value. */
2036 int32_t num_played;
2037 /** New last played count. */
2038 int64_t last_played;
2039 /** New lyrics id. */
2040 int32_t lyrics_id;
2041 /** New image id. */
2042 int32_t image_id;
2043 /** New amplification value. */
2044 int32_t amp;
2045 /** Command line flags (see \ref touch_flags). */
2046 unsigned flags;
2047 };
2048
2049 /** Data passed to the action handler of com_touch(). */
2050 struct touch_action_data {
2051 /** Command line options (see \ref com_touch_options). */
2052 struct com_touch_options *cto;
2053 /** Message buffer. */
2054 struct para_buffer pb;
2055 };
2056
2057 static int touch_audio_file(__a_unused struct osl_table *table,
2058 struct osl_row *row, const char *name, void *data)
2059 {
2060 struct touch_action_data *tad = data;
2061 struct osl_object obj;
2062 struct afs_info old_afsi, new_afsi;
2063 int ret, no_options = tad->cto->num_played < 0 && tad->cto->last_played < 0 &&
2064 tad->cto->lyrics_id < 0 && tad->cto->image_id < 0 && tad->cto->amp < 0;
2065 struct afsi_change_event_data aced;
2066
2067 ret = get_afsi_object_of_row(row, &obj);
2068 if (ret < 0)
2069 return para_printf(&tad->pb, "%s: %s\n", name, para_strerror(-ret));
2070 ret = load_afsi(&old_afsi, &obj);
2071 if (ret < 0)
2072 return para_printf(&tad->pb, "%s: %s\n", name, para_strerror(-ret));
2073 new_afsi = old_afsi;
2074 if (no_options) {
2075 new_afsi.num_played++;
2076 new_afsi.last_played = time(NULL);
2077 if (tad->cto->flags & TOUCH_FLAG_VERBOSE) {
2078 ret = para_printf(&tad->pb, "%s: num_played = %u, "
2079 "last_played = now()\n", name,
2080 new_afsi.num_played);
2081 if (ret < 0)
2082 return ret;
2083 }
2084 } else {
2085 if (tad->cto->flags & TOUCH_FLAG_VERBOSE) {
2086 ret = para_printf(&tad->pb, "touching %s\n", name);
2087 if (ret < 0)
2088 return ret;
2089 }
2090 if (tad->cto->lyrics_id >= 0)
2091 new_afsi.lyrics_id = tad->cto->lyrics_id;
2092 if (tad->cto->image_id >= 0)
2093 new_afsi.image_id = tad->cto->image_id;
2094 if (tad->cto->num_played >= 0)
2095 new_afsi.num_played = tad->cto->num_played;
2096 if (tad->cto->last_played >= 0)
2097 new_afsi.last_played = tad->cto->last_played;
2098 if (tad->cto->amp >= 0)
2099 new_afsi.amp = tad->cto->amp;
2100 }
2101 save_afsi(&new_afsi, &obj); /* in-place update */
2102 aced.aft_row = row;
2103 aced.old_afsi = &old_afsi;
2104 afs_event(AFSI_CHANGE, &tad->pb, &aced);
2105 return 1;
2106 }
2107
2108 static void com_touch_callback(int fd, const struct osl_object *query)
2109 {
2110 struct touch_action_data tad = {.cto = query->data,
2111 .pb = {
2112 .max_size = shm_get_shmmax(),
2113 .private_data = &fd,
2114 .max_size_handler = afs_max_size_handler
2115 }
2116 };
2117 int ret, ret2 = 0;
2118 struct pattern_match_data pmd = {
2119 .table = audio_file_table,
2120 .loop_col_num = AFTCOL_HASH,
2121 .match_col_num = AFTCOL_PATH,
2122 .patterns = {.data = (char *)query->data + sizeof(*tad.cto),
2123 .size = query->size - sizeof(*tad.cto)},
2124 .data = &tad,
2125 .action = touch_audio_file
2126 };
2127 if (tad.cto->flags & TOUCH_FLAG_FNM_PATHNAME)
2128 pmd.fnmatch_flags |= FNM_PATHNAME;
2129 ret = for_each_matching_row(&pmd);
2130 if (ret < 0)
2131 ret2 = para_printf(&tad.pb, "%s\n", para_strerror(-ret));
2132 else if (pmd.num_matches == 0)
2133 ret2 = para_printf(&tad.pb, "no matches\n");
2134 if (ret2 >= 0 && tad.pb.offset)
2135 pass_buffer_as_shm(fd, SBD_OUTPUT, tad.pb.buf, tad.pb.offset);
2136 free(tad.pb.buf);
2137 }
2138
2139 int com_touch(struct command_context *cc)
2140 {
2141 struct com_touch_options cto = {
2142 .num_played = -1,
2143 .last_played = -1,
2144 .lyrics_id = -1,
2145 .image_id = -1,
2146 .amp = -1,
2147 };
2148 struct osl_object query = {.data = &cto, .size = sizeof(cto)};
2149 int i, ret;
2150
2151
2152 for (i = 1; i < cc->argc; i++) {
2153 const char *arg = cc->argv[i];
2154 if (arg[0] != '-')
2155 break;
2156 if (!strcmp(arg, "--")) {
2157 i++;
2158 break;
2159 }
2160 if (!strncmp(arg, "-n=", 3)) {
2161 ret = para_atoi32(arg + 3, &cto.num_played);
2162 if (ret < 0)
2163 return ret;
2164 continue;
2165 }
2166 if (!strncmp(arg, "-l=", 3)) {
2167 ret = para_atoi64(arg + 3, &cto.last_played);
2168 if (ret < 0)
2169 return ret;
2170 continue;
2171 }
2172 if (!strncmp(arg, "-y=", 3)) {
2173 ret = para_atoi32(arg + 3, &cto.lyrics_id);
2174 if (ret < 0)
2175 return ret;
2176 continue;
2177 }
2178 if (!strncmp(arg, "-i=", 3)) {
2179 ret = para_atoi32(arg + 3, &cto.image_id);
2180 if (ret < 0)
2181 return ret;
2182 continue;
2183 }
2184 if (!strncmp(arg, "-a=", 3)) {
2185 int32_t val;
2186 ret = para_atoi32(arg + 3, &val);
2187 if (ret < 0)
2188 return ret;
2189 if (val < 0 || val > 255)
2190 return -ERRNO_TO_PARA_ERROR(EINVAL);
2191 cto.amp = val;
2192 continue;
2193 }
2194 if (!strcmp(arg, "-p")) {
2195 cto.flags |= TOUCH_FLAG_FNM_PATHNAME;
2196 continue;
2197 }
2198 if (!strcmp(arg, "-v")) {
2199 cto.flags |= TOUCH_FLAG_VERBOSE;
2200 continue;
2201 }
2202 break; /* non-option starting with dash */
2203 }
2204 if (i >= cc->argc)
2205 return -E_AFT_SYNTAX;
2206 ret = send_option_arg_callback_request(&query, cc->argc - i,
2207 cc->argv + i, com_touch_callback, afs_cb_result_handler, cc);
2208 if (ret < 0)
2209 send_strerror(cc, -ret);
2210 return ret;
2211 }
2212
2213 /** Flags for com_rm(). */
2214 enum rm_flags {
2215 /** -v */
2216 RM_FLAG_VERBOSE = 1,
2217 /** -f */
2218 RM_FLAG_FORCE = 2,
2219 /** -p */
2220 RM_FLAG_FNM_PATHNAME = 4
2221 };
2222
2223 /** Data passed to the action handler of com_rm(). */
2224 struct com_rm_action_data {
2225 /** Command line flags ((see \ref rm_flags). */
2226 uint32_t flags;
2227 /** Message buffer. */
2228 struct para_buffer pb;
2229 };
2230
2231 static int remove_audio_file(__a_unused struct osl_table *table,
2232 struct osl_row *row, const char *name, void *data)
2233 {
2234 struct com_rm_action_data *crd = data;
2235 int ret;
2236
2237 if (crd->flags & RM_FLAG_VERBOSE) {
2238 ret = para_printf(&crd->pb, "removing %s\n", name);
2239 if (ret < 0)
2240 return ret;
2241 }
2242 afs_event(AUDIO_FILE_REMOVE, &crd->pb, row);
2243 ret = osl(osl_del_row(audio_file_table, row));
2244 if (ret < 0)
2245 para_printf(&crd->pb, "%s: %s\n", name, para_strerror(-ret));
2246 return ret;
2247 }
2248
2249 static void com_rm_callback(int fd, const struct osl_object *query)
2250 {
2251 struct com_rm_action_data crd = {.flags = *(uint32_t *)query->data,
2252 .pb = {
2253 .max_size = shm_get_shmmax(),
2254 .private_data = &fd,
2255 .max_size_handler = afs_max_size_handler
2256 }
2257 };
2258 int ret;
2259 struct pattern_match_data pmd = {
2260 .table = audio_file_table,
2261 .loop_col_num = AFTCOL_HASH,
2262 .match_col_num = AFTCOL_PATH,
2263 .patterns = {.data = (char *)query->data + sizeof(uint32_t),
2264 .size = query->size - sizeof(uint32_t)},
2265 .data = &crd,
2266 .action = remove_audio_file
2267 };
2268 if (crd.flags & RM_FLAG_FNM_PATHNAME)
2269 pmd.fnmatch_flags |= FNM_PATHNAME;
2270 ret = for_each_matching_row(&pmd);
2271 if (ret < 0) {
2272 para_printf(&crd.pb, "%s\n", para_strerror(-ret));
2273 return;
2274 }
2275 if ((pmd.num_matches == 0) && !(crd.flags & RM_FLAG_FORCE))
2276 ret = para_printf(&crd.pb, "no matches -- nothing removed\n");
2277 else if (crd.flags & RM_FLAG_VERBOSE) {
2278 ret = para_printf(&crd.pb, "removed %u files\n",
2279 pmd.num_matches);
2280 }
2281 if (ret >= 0 && crd.pb.offset)
2282 pass_buffer_as_shm(fd, SBD_OUTPUT, crd.pb.buf, crd.pb.offset);
2283 free(crd.pb.buf);
2284 }
2285
2286 /* TODO options: -r (recursive) */
2287 int com_rm(struct command_context *cc)
2288 {
2289 uint32_t flags = 0;
2290 struct osl_object query = {.data = &flags, .size = sizeof(flags)};
2291 int i, ret;
2292
2293 for (i = 1; i < cc->argc; i++) {
2294 const char *arg = cc->argv[i];
2295 if (arg[0] != '-')
2296 break;
2297 if (!strcmp(arg, "--")) {
2298 i++;
2299 break;
2300 }
2301 if (!strcmp(arg, "-f")) {
2302 flags |= RM_FLAG_FORCE;
2303 continue;
2304 }
2305 if (!strcmp(arg, "-p")) {
2306 flags |= RM_FLAG_FNM_PATHNAME;
2307 continue;
2308 }
2309 if (!strcmp(arg, "-v")) {
2310 flags |= RM_FLAG_VERBOSE;
2311 continue;
2312 }
2313 break;
2314 }
2315 if (i >= cc->argc)
2316 return -E_AFT_SYNTAX;
2317 ret = send_option_arg_callback_request(&query, cc->argc - i,
2318 cc->argv + i, com_rm_callback, afs_cb_result_handler, cc);
2319 if (ret < 0)
2320 send_strerror(cc, -ret);
2321 return ret;
2322 }
2323
2324 /**
2325 * Flags used by the cpsi command.
2326 *
2327 * \sa com_cpsi().
2328 */
2329 enum cpsi_flags {
2330 /** Whether the lyrics id should be copied. */
2331 CPSI_FLAG_COPY_LYRICS_ID = 1,
2332 /** Whether the image id should be copied. */
2333 CPSI_FLAG_COPY_IMAGE_ID = 2,
2334 /** Whether the lastplayed time should be copied. */
2335 CPSI_FLAG_COPY_LASTPLAYED = 4,
2336 /** Whether the numplayed count should be copied. */
2337 CPSI_FLAG_COPY_NUMPLAYED = 8,
2338 /** Whether the attributes should be copied. */
2339 CPSI_FLAG_COPY_ATTRIBUTES = 16,
2340 /** Activates verbose mode. */
2341 CPSI_FLAG_VERBOSE = 32,
2342 };
2343
2344 /** Data passed to the action handler of com_cpsi(). */
2345 struct cpsi_action_data {
2346 /** command line flags (see \ref cpsi_flags). */
2347 unsigned flags;
2348 /** Message buffer. */
2349 struct para_buffer pb;
2350 /** Values are copied from here. */
2351 struct afs_info source_afsi;
2352 };
2353
2354 static int copy_selector_info(__a_unused struct osl_table *table,
2355 struct osl_row *row, const char *name, void *data)
2356 {
2357 struct cpsi_action_data *cad = data;
2358 struct osl_object target_afsi_obj;
2359 int ret;
2360 struct afs_info old_afsi, target_afsi;
2361 struct afsi_change_event_data aced;
2362
2363 ret = get_afsi_object_of_row(row, &target_afsi_obj);
2364 if (ret < 0)
2365 return ret;
2366 load_afsi(&target_afsi, &target_afsi_obj);
2367 old_afsi = target_afsi;
2368 if (cad->flags & CPSI_FLAG_COPY_LYRICS_ID)
2369 target_afsi.lyrics_id = cad->source_afsi.lyrics_id;
2370 if (cad->flags & CPSI_FLAG_COPY_IMAGE_ID)
2371 target_afsi.image_id = cad->source_afsi.image_id;
2372 if (cad->flags & CPSI_FLAG_COPY_LASTPLAYED)
2373 target_afsi.last_played = cad->source_afsi.last_played;
2374 if (cad->flags & CPSI_FLAG_COPY_NUMPLAYED)
2375 target_afsi.num_played = cad->source_afsi.num_played;
2376 if (cad->flags & CPSI_FLAG_COPY_ATTRIBUTES)
2377 target_afsi.attributes = cad->source_afsi.attributes;
2378 save_afsi(&target_afsi, &target_afsi_obj); /* in-place update */
2379 if (cad->flags & CPSI_FLAG_VERBOSE) {
2380 ret = para_printf(&cad->pb, "copied afsi to %s\n", name);
2381 if (ret < 0)
2382 return ret;
2383 }
2384 aced.aft_row = row;
2385 aced.old_afsi = &old_afsi;
2386 afs_event(AFSI_CHANGE, &cad->pb, &aced);
2387 return 1;
2388 }
2389
2390 static void com_cpsi_callback(int fd, const struct osl_object *query)
2391 {
2392 struct cpsi_action_data cad = {
2393 .flags = *(unsigned *)query->data,
2394 .pb = {
2395 .max_size = shm_get_shmmax(),
2396 .private_data = &fd,
2397 .max_size_handler = afs_max_size_handler
2398 }
2399 };
2400 int ret;
2401 char *source_path = (char *)query->data + sizeof(cad.flags);
2402 struct pattern_match_data pmd = {
2403 .table = audio_file_table,
2404 .loop_col_num = AFTCOL_HASH,
2405 .match_col_num = AFTCOL_PATH,
2406 .patterns = {.data = source_path + strlen(source_path) + 1,
2407 .size = query->size - sizeof(cad.flags)
2408 - strlen(source_path) - 1},
2409 .data = &cad,
2410 .action = copy_selector_info
2411 };
2412
2413 ret = get_afsi_of_path(source_path, &cad.source_afsi);
2414 if (ret < 0)
2415 goto out;
2416 ret = for_each_matching_row(&pmd);
2417 out:
2418 if (ret < 0)
2419 para_printf(&cad.pb, "%s\n", para_strerror(-ret));
2420 else if (pmd.num_matches > 0) {
2421 if (cad.flags & CPSI_FLAG_VERBOSE)
2422 para_printf(&cad.pb, "copied requested afsi from %s "
2423 "to %u files\n", source_path, pmd.num_matches);
2424 } else
2425 para_printf(&cad.pb, "no matches - nothing copied\n");
2426 if (cad.pb.offset)
2427 pass_buffer_as_shm(fd, SBD_OUTPUT, cad.pb.buf, cad.pb.offset);
2428 free(cad.pb.buf);
2429 }
2430
2431 int com_cpsi(struct command_context *cc)
2432 {
2433 unsigned flags = 0;
2434 int i, ret;
2435 struct osl_object options = {.data = &flags, .size = sizeof(flags)};
2436
2437 for (i = 1; i < cc->argc; i++) {
2438 const char *arg = cc->argv[i];
2439 if (arg[0] != '-')
2440 break;
2441 if (!strcmp(arg, "--")) {
2442 i++;
2443 break;
2444 }
2445 if (!strcmp(arg, "-y")) {
2446 flags |= CPSI_FLAG_COPY_LYRICS_ID;
2447 continue;
2448 }
2449 if (!strcmp(arg, "-i")) {
2450 flags |= CPSI_FLAG_COPY_IMAGE_ID;
2451 continue;
2452 }
2453 if (!strcmp(arg, "-l")) {
2454 flags |= CPSI_FLAG_COPY_LASTPLAYED;
2455 continue;
2456 }
2457 if (!strcmp(arg, "-n")) {
2458 flags |= CPSI_FLAG_COPY_NUMPLAYED;
2459 continue;
2460 }
2461 if (!strcmp(arg, "-a")) {
2462 flags |= CPSI_FLAG_COPY_ATTRIBUTES;
2463 continue;
2464 }
2465 if (!strcmp(arg, "-v")) {
2466 flags |= CPSI_FLAG_VERBOSE;
2467 continue;
2468 }
2469 break;
2470 }
2471 if (i + 1 >= cc->argc) /* need at least source file and pattern */
2472 return -E_AFT_SYNTAX;
2473 if (!(flags & ~CPSI_FLAG_VERBOSE)) /* no copy flags given */
2474 flags = ~(unsigned)CPSI_FLAG_VERBOSE | flags;
2475 ret = send_option_arg_callback_request(&options, cc->argc - i,
2476 cc->argv + i, com_cpsi_callback, afs_cb_result_handler, cc);
2477 if (ret < 0)
2478 send_strerror(cc, -ret);
2479 return ret;
2480 }
2481
2482 struct change_atts_data {
2483 uint64_t add_mask, del_mask;
2484 struct para_buffer pb;
2485 };
2486
2487 static int change_atts(__a_unused struct osl_table *table,
2488 struct osl_row *row, __a_unused const char *name, void *data)
2489 {
2490 int ret;
2491 struct osl_object obj;
2492 struct afs_info old_afsi, new_afsi;
2493 struct afsi_change_event_data aced = {
2494 .aft_row = row,
2495 .old_afsi = &old_afsi
2496 };
2497 struct change_atts_data *cad = data;
2498
2499 ret = get_afsi_object_of_row(row, &obj);
2500 if (ret < 0)
2501 return ret;
2502 ret = load_afsi(&old_afsi, &obj);
2503 if (ret < 0)
2504 return ret;
2505 new_afsi = old_afsi;
2506 new_afsi.attributes |= cad->add_mask;
2507 new_afsi.attributes &= ~cad->del_mask;
2508 save_afsi(&new_afsi, &obj); /* in-place update */
2509 afs_event(AFSI_CHANGE, &cad->pb, &aced);
2510 return 1;
2511 }
2512
2513 static void com_setatt_callback(int fd, const struct osl_object *query)
2514 {
2515 char *p;
2516 int ret;
2517 size_t len;
2518 struct change_atts_data cad = {
2519 .pb = {
2520 .max_size = shm_get_shmmax(),
2521 .max_size_handler = afs_max_size_handler,
2522 .private_data = &(struct afs_max_size_handler_data) {
2523 .fd = fd,
2524 .band = SBD_OUTPUT
2525 }
2526 }
2527 };
2528 struct pattern_match_data pmd = {
2529 .table = audio_file_table,
2530 .loop_col_num = AFTCOL_HASH,
2531 .match_col_num = AFTCOL_PATH,
2532 .pm_flags = PM_SKIP_EMPTY_NAME,
2533 .data = &cad,
2534 .action = change_atts
2535 };
2536
2537 for (p = query->data; p < (char *)query->data + query->size; p += len + 1) {
2538 char c;
2539 unsigned char bitnum;
2540
2541 len = strlen(p);
2542 ret = -E_ATTR_SYNTAX;
2543 if (len == 0)
2544 goto out;
2545 c = p[len - 1];
2546 if (c != '+' && c != '-')
2547 break;
2548 p[len - 1] = '\0';
2549 ret = get_attribute_bitnum_by_name(p, &bitnum);
2550 if (ret < 0)
2551 goto out;
2552 if (c == '+')
2553 cad.add_mask |= (1UL << bitnum);
2554 else
2555 cad.del_mask |= (1UL << bitnum);
2556 }
2557 ret = -E_ATTR_SYNTAX;
2558 if (!cad.add_mask && !cad.del_mask)
2559 goto out;
2560 pmd.patterns.data = p;
2561 assert(p < (char *)query->data + query->size);
2562 pmd.patterns.size = (char *)query->data + query->size - p;
2563 ret = for_each_matching_row(&pmd);
2564 if (ret < 0)
2565 goto out;
2566 if (pmd.num_matches == 0)
2567 para_printf(&cad.pb, "no matches\n");
2568 out:
2569 if (ret < 0)
2570 para_printf(&cad.pb, "%s\n", para_strerror(-ret));
2571 if (cad.pb.offset)
2572 pass_buffer_as_shm(fd, SBD_OUTPUT, cad.pb.buf, cad.pb.offset);
2573 free(cad.pb.buf);
2574 }
2575
2576 int com_setatt(struct command_context *cc)
2577 {
2578 if (cc->argc < 3)
2579 return -E_ATTR_SYNTAX;
2580 return send_standard_callback_request(cc->argc - 1, cc->argv + 1,
2581 com_setatt_callback, afs_cb_result_handler, cc);
2582 }
2583
2584 static void afs_stat_callback(int fd, const struct osl_object *query)
2585 {
2586 int *parser_friendly = query->data;
2587 char *buf = *parser_friendly?
2588 parser_friendly_status_items : status_items;
2589
2590 if (!buf)
2591 return;
2592 pass_buffer_as_shm(fd, SBD_OUTPUT, buf, strlen(buf));
2593 }
2594
2595 /**
2596 * Get the current afs status items from the afs process and send it.
2597 *
2598 * \param cc The command context, used e.g. for data encryption.
2599 * \param parser_friendly Whether parser-friendly output format should be used.
2600 *
2601 * As the contents of the afs status items change in time and the command
2602 * handler only has a COW version created at fork time, it can not send
2603 * up-to-date afs status items directly. Therefore the usual callback mechanism
2604 * is used to pass the status items from the afs process to the command handler
2605 * via a shared memory area and a pipe.
2606 *
2607 * \return The return value of the underlying call to \ref send_callback_request().
2608 */
2609 int send_afs_status(struct command_context *cc, int parser_friendly)
2610 {
2611 struct osl_object query = {.data = &parser_friendly,
2612 .size = sizeof(parser_friendly)};
2613
2614 return send_callback_request(afs_stat_callback, &query,
2615 afs_cb_result_handler, cc);
2616 }
2617
2618 /* TODO: optionally fix problems by removing offending rows */
2619 static int check_audio_file(struct osl_row *row, void *data)
2620 {
2621 char *path;
2622 struct para_buffer *pb = data;
2623 struct stat statbuf;
2624 int ret = get_audio_file_path_of_row(row, &path);
2625 struct afs_info afsi;
2626 char *blob_name;
2627
2628 if (ret < 0)
2629 return para_printf(pb, "%s\n", para_strerror(-ret));
2630 if (stat(path, &statbuf) < 0) {
2631 ret = para_printf(pb, "%s: stat error (%s)\n", path, strerror(errno));
2632 if (ret < 0)
2633 return ret;
2634 } else {
2635 if (!S_ISREG(statbuf.st_mode)) {
2636 ret = para_printf(pb, "%s: not a regular file\n", path);
2637 if (ret < 0)
2638 return ret;
2639 }
2640 }
2641 ret = get_afsi_of_row(row, &afsi);
2642 if (ret < 0)
2643 return para_printf(pb, "%s: %s\n", path, para_strerror(-ret));
2644 ret = lyr_get_name_by_id(afsi.lyrics_id, &blob_name);
2645 if (ret < 0) {
2646 ret = para_printf(pb, "%s lyrics id %u: %s\n", path, afsi.lyrics_id,
2647 para_strerror(-ret));
2648 if (ret < 0)
2649 return ret;
2650 }
2651 ret = img_get_name_by_id(afsi.image_id, &blob_name);
2652 if (ret < 0)
2653 ret = para_printf(pb, "%s image id %u: %s\n", path, afsi.image_id,
2654 para_strerror(-ret));
2655 return ret;
2656 }
2657
2658 /**
2659 * Check the audio file table for inconsistencies.
2660 *
2661 * \param fd The afs socket.
2662 * \param query Unused.
2663 *
2664 * This function always succeeds.
2665 *
2666 * \sa com_check().
2667 */
2668 void aft_check_callback(int fd, __a_unused const struct osl_object *query)
2669 {
2670 struct para_buffer pb = {
2671 .max_size = shm_get_shmmax(),
2672 .private_data = &(struct afs_max_size_handler_data) {
2673 .fd = fd,
2674 .band = SBD_OUTPUT
2675 },
2676 .max_size_handler = afs_max_size_handler
2677 };
2678 int ret = para_printf(&pb, "checking audio file table...\n");
2679
2680 if (ret < 0)
2681 return;
2682 audio_file_loop(&pb, check_audio_file);
2683 if (pb.offset)
2684 pass_buffer_as_shm(fd, SBD_OUTPUT, pb.buf, pb.offset);
2685 free(pb.buf);
2686 }
2687
2688 /**
2689 * Close the audio file table.
2690 *
2691 * \param flags Usual flags that are passed to osl_close_table().
2692 *
2693 * \sa osl_close_table().
2694 */
2695 static void aft_close(void)
2696 {
2697 osl_close_table(audio_file_table, OSL_MARK_CLEAN);
2698 audio_file_table = NULL;
2699 }
2700
2701 /**
2702 * Open the audio file table.
2703 *
2704 * \param dir The database directory.
2705 *
2706 * \return Standard.
2707 *
2708 * \sa osl_open_table().
2709 */
2710 static int aft_open(const char *dir)
2711 {
2712 int ret;
2713
2714 audio_file_table_desc.dir = dir;
2715 ret = osl(osl_open_table(&audio_file_table_desc, &audio_file_table));
2716 if (ret >= 0) {
2717 unsigned num;
2718 osl_get_num_rows(audio_file_table, &num);
2719 PARA_INFO_LOG("audio file table contains %d files\n", num);
2720 return ret;
2721 }
2722 PARA_INFO_LOG("failed to open audio file table\n");
2723 audio_file_table = NULL;
2724 if (ret >= 0 || ret == -OSL_ERRNO_TO_PARA_ERROR(E_OSL_NOENT))
2725 return 1;
2726 return ret;
2727 }
2728
2729 static int aft_create(const char *dir)
2730 {
2731 audio_file_table_desc.dir = dir;
2732 return osl(osl_create_table(&audio_file_table_desc));
2733 }
2734
2735 static int clear_attribute(struct osl_row *row, void *data)
2736 {
2737 struct rmatt_event_data *red = data;
2738 struct afs_info afsi;
2739 struct osl_object obj;
2740 int ret = get_afsi_object_of_row(row, &obj);
2741 uint64_t mask = ~(1ULL << red->bitnum);
2742
2743 if (ret < 0)
2744 return ret;
2745 ret = load_afsi(&afsi, &obj);
2746 if (ret < 0)
2747 return ret;
2748 afsi.attributes &= mask;
2749 save_afsi(&afsi, &obj);
2750 return 1;
2751 }
2752
2753 static int aft_event_handler(enum afs_events event, struct para_buffer *pb,
2754 void *data)
2755 {
2756 int ret;
2757
2758 switch (event) {
2759 case ATTRIBUTE_REMOVE: {
2760 const struct rmatt_event_data *red = data;
2761 ret = para_printf(pb, "clearing attribute %s (bit %u) from all "
2762 "entries in the audio file table\n", red->name,
2763 red->bitnum);
2764 if (ret < 0)
2765 return ret;
2766 return audio_file_loop(data, clear_attribute);
2767 }
2768 default:
2769 return 1;
2770 }
2771 }
2772
2773 /**
2774 * Initialize the audio file table.
2775 *
2776 * \param t Pointer to the structure to be initialized.
2777 */
2778 void aft_init(struct afs_table *t)
2779 {
2780 t->open = aft_open;
2781 t->close = aft_close;
2782 t->create = aft_create;
2783 t->event_handler = aft_event_handler;
2784 }