paraslash 0.6.3
[paraslash.git] / aft.c
1 /* Copyright (C) 2007 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
2
3 /** \file aft.c Audio file table functions. */
4
5 #include <regex.h>
6 #include <sys/mman.h>
7 #include <fnmatch.h>
8 #include <sys/shm.h>
9 #include <osl.h>
10 #include <lopsub.h>
11
12 #include "server_cmd.lsg.h"
13 #include "para.h"
14 #include "error.h"
15 #include "crypt.h"
16 #include "string.h"
17 #include "afh.h"
18 #include "afs.h"
19 #include "fd.h"
20 #include "ipc.h"
21 #include "portable_io.h"
22 #include "sideband.h"
23 #include "command.h"
24
25 /* Data about one audio file. Needed for ls and stat output. */
26 struct ls_data {
27 /* Usual audio format handler information. */
28 struct afh_info afhi;
29 /* Audio file selector information. */
30 struct afs_info afsi;
31 /* The full path of the audio file. */
32 char *path;
33 /* The score value (if -a was given). */
34 long score;
35 /* The hash value of the audio file data. */
36 unsigned char *hash;
37 };
38
39 /*
40 * The internal state of the audio file table is described by the following
41 * variables which are private to aft.c.
42 */
43 static struct osl_table *audio_file_table; /* NULL if table not open */
44 static struct osl_row *current_aft_row; /* NULL if no audio file open */
45 static unsigned char current_hash[HASH_SIZE]; /* only used on sighup */
46
47 static char *status_items;
48 static char *parser_friendly_status_items;
49 static struct ls_data status_item_ls_data;
50
51 /** The different sorting methods of the ls command. */
52 enum ls_sorting_method {
53 LS_SORT_BY_PATH, /**< -s=p (default) */
54 LS_SORT_BY_SCORE, /**< -s=s */
55 LS_SORT_BY_LAST_PLAYED, /**< -s=l */
56 LS_SORT_BY_NUM_PLAYED, /**< -s=n */
57 LS_SORT_BY_FREQUENCY, /**< -s=f */
58 LS_SORT_BY_CHANNELS, /**< -s=c */
59 LS_SORT_BY_IMAGE_ID, /**< -s=i */
60 LS_SORT_BY_LYRICS_ID, /**< -s=y */
61 LS_SORT_BY_BITRATE, /**< -s=b */
62 LS_SORT_BY_DURATION, /**< -s=d */
63 LS_SORT_BY_AUDIO_FORMAT, /**< -s=a */
64 LS_SORT_BY_HASH, /**< -s=h */
65 };
66
67 /** The different listing modes of the ls command. */
68 enum ls_listing_mode {
69 LS_MODE_SHORT, /**< Default listing mode. */
70 LS_MODE_LONG, /**< -l or -l=l */
71 LS_MODE_VERBOSE, /** -l=v */
72 LS_MODE_MBOX, /** -l=m */
73 LS_MODE_CHUNKS, /** -l=c */
74 LS_MODE_PARSER, /** -l=p */
75 };
76
77 /**
78 * The size of the individual output fields of the ls command.
79 *
80 * These depend on the content being listed. For example, if each listed file
81 * is shorter than an hour, the duration format is set to mm:ss. Otherwise it
82 * is set to hh:mm:ss.
83 */
84 struct ls_widths {
85 /** size of the score field. */
86 unsigned short score_width;
87 /** size of the image id field. */
88 unsigned short image_id_width;
89 /** size of the lyrics id field. */
90 unsigned short lyrics_id_width;
91 /** size of the bitrate field. */
92 unsigned short bitrate_width;
93 /** size of the frequency field. */
94 unsigned short frequency_width;
95 /** size of the duration field. */
96 unsigned short duration_width;
97 /** size of the num played field. */
98 unsigned short num_played_width;
99 /** size of the amp field. */
100 unsigned short amp_width;
101 /** size of the audio format field. */
102 unsigned short audio_format_width;
103 };
104
105 /** Data passed from the ls command handler to its callback function. */
106 struct ls_options {
107 struct lls_parse_result *lpr;
108 /* Derived from lpr */
109 enum ls_sorting_method sorting;
110 /* Derived from lpr */
111 enum ls_listing_mode mode;
112 /** Used for long listing mode to align the output fields. */
113 struct ls_widths widths;
114 /** Size of the \a data array. */
115 uint32_t array_size;
116 /** Number of used entries in the data array. */
117 uint32_t num_matching_paths;
118 /** Array of matching entries. */
119 struct ls_data *data;
120 /** Used to sort the array. */
121 struct ls_data **data_ptr;
122 };
123
124 /**
125 * Describes the layout of the mmapped-afs info struct.
126 *
127 * \sa struct \ref afs_info.
128 */
129 enum afsi_offsets {
130 /** Where .last_played is stored. */
131 AFSI_LAST_PLAYED_OFFSET = 0,
132 /** Storage position of the attributes bitmap. */
133 AFSI_ATTRIBUTES_OFFSET = 8,
134 /** Storage position of the .num_played field. */
135 AFSI_NUM_PLAYED_OFFSET = 16,
136 /** Storage position of the .image_id field. */
137 AFSI_IMAGE_ID_OFFSET = 20,
138 /** Storage position of the .lyrics_id field. */
139 AFSI_LYRICS_ID_OFFSET = 24,
140 /** Storage position of the .audio_format_id field. */
141 AFSI_AUDIO_FORMAT_ID_OFFSET = 28,
142 /** Storage position of the amplification field. */
143 AFSI_AMP_OFFSET = 29,
144 /** 2 bytes reserved space for future usage. */
145 AFSI_AUDIO_FORMAT_UNUSED_OFFSET = 30,
146 /** On-disk storage space needed. */
147 AFSI_SIZE = 32
148 };
149
150 /*
151 * Convert a struct afs_info to an osl object.
152 *
153 * \param afsi Pointer to the audio file info to be converted.
154 * \param obj Result pointer.
155 *
156 * \sa \ref load_afsi().
157 */
158 static void save_afsi(struct afs_info *afsi, struct osl_object *obj)
159 {
160 char *buf = obj->data;
161
162 write_u64(buf + AFSI_LAST_PLAYED_OFFSET, afsi->last_played);
163 write_u64(buf + AFSI_ATTRIBUTES_OFFSET, afsi->attributes);
164 write_u32(buf + AFSI_NUM_PLAYED_OFFSET, afsi->num_played);
165 write_u32(buf + AFSI_IMAGE_ID_OFFSET, afsi->image_id);
166 write_u32(buf + AFSI_LYRICS_ID_OFFSET, afsi->lyrics_id);
167 write_u8(buf + AFSI_AUDIO_FORMAT_ID_OFFSET,
168 afsi->audio_format_id);
169 write_u8(buf + AFSI_AMP_OFFSET, afsi->amp);
170 memset(buf + AFSI_AUDIO_FORMAT_UNUSED_OFFSET, 0, 2);
171 }
172
173 /*
174 * Get the audio file selector info struct stored in an osl object.
175 *
176 * \param afsi Points to the audio_file info structure to be filled in.
177 * \param obj The osl object holding the data.
178 *
179 * \return Standard.
180 *
181 * \sa \ref save_afsi().
182 */
183 static int load_afsi(struct afs_info *afsi, struct osl_object *obj)
184 {
185 char *buf = obj->data;
186 if (obj->size < AFSI_SIZE)
187 return -E_BAD_AFSI;
188 afsi->last_played = read_u64(buf + AFSI_LAST_PLAYED_OFFSET);
189 afsi->attributes = read_u64(buf + AFSI_ATTRIBUTES_OFFSET);
190 afsi->num_played = read_u32(buf + AFSI_NUM_PLAYED_OFFSET);
191 afsi->image_id = read_u32(buf + AFSI_IMAGE_ID_OFFSET);
192 afsi->lyrics_id = read_u32(buf + AFSI_LYRICS_ID_OFFSET);
193 afsi->audio_format_id = read_u8(buf +
194 AFSI_AUDIO_FORMAT_ID_OFFSET);
195 afsi->amp = read_u8(buf + AFSI_AMP_OFFSET);
196 return 1;
197 }
198
199 /** The columns of the audio file table. */
200 enum audio_file_table_columns {
201 /** The hash on the content of the audio file. */
202 AFTCOL_HASH,
203 /** The full path in the filesystem. */
204 AFTCOL_PATH,
205 /** The audio file selector info. */
206 AFTCOL_AFSI,
207 /** The audio format handler info. */
208 AFTCOL_AFHI,
209 /** The chunk table info and the chunk table of the audio file. */
210 AFTCOL_CHUNKS,
211 /** The number of columns of this table. */
212 NUM_AFT_COLUMNS
213 };
214
215 /* compare function for the hash column */
216 static int aft_hash_compare(const struct osl_object *obj1,
217 const struct osl_object *obj2)
218 {
219 return hash_compare((unsigned char *)obj1->data,
220 (unsigned char *)obj2->data);
221 }
222
223 static struct osl_column_description aft_cols[] = {
224 [AFTCOL_HASH] = {
225 .storage_type = OSL_MAPPED_STORAGE,
226 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE | OSL_UNIQUE,
227 .name = "hash",
228 .compare_function = aft_hash_compare,
229 .data_size = HASH_SIZE
230 },
231 [AFTCOL_PATH] = {
232 .storage_type = OSL_MAPPED_STORAGE,
233 .storage_flags = OSL_RBTREE | OSL_UNIQUE,
234 .name = "path",
235 .compare_function = string_compare,
236 },
237 [AFTCOL_AFSI] = {
238 .storage_type = OSL_MAPPED_STORAGE,
239 .storage_flags = OSL_FIXED_SIZE,
240 .name = "afs_info",
241 .data_size = AFSI_SIZE
242 },
243 [AFTCOL_AFHI] = {
244 .storage_type = OSL_MAPPED_STORAGE,
245 .name = "afh_info",
246 },
247 [AFTCOL_CHUNKS] = {
248 .storage_type = OSL_DISK_STORAGE,
249 .name = "chunks",
250 }
251 };
252
253 static struct osl_table_description audio_file_table_desc = {
254 .name = "audio_files",
255 .num_columns = NUM_AFT_COLUMNS,
256 .flags = OSL_LARGE_TABLE,
257 .column_descriptions = aft_cols
258 };
259
260 /*
261 * Produce a canonicalized absolute pathname.
262 *
263 * Returns one if the resolved path a directory, zero if it is a regular file,
264 * negative on errors.
265 */
266 static int verify_path(const char *orig_path, char **resolved_path)
267 {
268 int ret;
269 char *path = NULL;
270 struct stat statbuf;
271
272 if (*orig_path != '/') /* we only accept absolute paths */
273 goto fail;
274 path = realpath(orig_path, NULL);
275 if (!path)
276 goto fail;
277 if (stat(path, &statbuf) < 0)
278 goto fail;
279 if (S_ISREG(statbuf.st_mode))
280 ret = 0;
281 else if (S_ISDIR(statbuf.st_mode))
282 ret = 1;
283 else
284 goto fail;
285 *resolved_path = path;
286 return ret;
287 fail:
288 *resolved_path = NULL;
289 free(path);
290 return -E_BAD_PATH;
291 }
292
293 /** The on-disk layout of a afhi struct. */
294 enum afhi_offsets {
295 /** Where the number of seconds is stored. */
296 AFHI_SECONDS_TOTAL_OFFSET = 0,
297 /** Position of the bitrate. */
298 AFHI_BITRATE_OFFSET = 4,
299 /** Position of the frequency. */
300 AFHI_FREQUENCY_OFFSET = 8,
301 /** Was: Location of the audio file header. */
302 AFHI_UNUSED1_OFFSET = 12,
303 /* Length of the audio file header. Zero means: No header. */
304 AFHI_HEADER_LEN_OFFSET = 16,
305 /** The total number of chunks (4 bytes). */
306 CHUNKS_TOTAL_OFFSET = 20,
307 /** The length of the audio file header (4 bytes). */
308 HEADER_LEN_OFFSET = 24,
309 /** Size of the largest chunk in bytes. (4 bytes). */
310 AFHI_MAX_CHUNK_SIZE_OFFSET = 28,
311 /** The seconds part of the chunk time (4 bytes). */
312 CHUNK_TV_TV_SEC_OFFSET = 32,
313 /** The microseconds part of the chunk time (4 bytes). */
314 CHUNK_TV_TV_USEC_OFFSET = 36,
315 /** Number of channels is stored here. (1 byte) */
316 AFHI_CHANNELS_OFFSET = 40,
317 /** The tag info position. */
318 AFHI_INFO_STRING_OFFSET = 41,
319 /** Minimal on-disk size of a valid afhi struct. */
320 MIN_AFHI_SIZE = 47, /* at least 6 null bytes for techinfo/tags */
321 };
322
323 static unsigned sizeof_afhi_buf(const struct afh_info *afhi)
324 {
325 if (!afhi)
326 return 0;
327 return MIN_AFHI_SIZE
328 + strlen(afhi->techinfo)
329 + strlen(afhi->tags.artist)
330 + strlen(afhi->tags.title)
331 + strlen(afhi->tags.year)
332 + strlen(afhi->tags.album)
333 + strlen(afhi->tags.comment);
334 }
335
336 static void save_afhi(struct afh_info *afhi, char *buf)
337 {
338 char *p;
339
340 if (!afhi)
341 return;
342 write_u32(buf + AFHI_SECONDS_TOTAL_OFFSET, afhi->seconds_total);
343 write_u32(buf + AFHI_BITRATE_OFFSET, afhi->bitrate);
344 write_u32(buf + AFHI_FREQUENCY_OFFSET, afhi->frequency);
345 write_u32(buf + AFHI_UNUSED1_OFFSET, 0);
346 write_u32(buf + AFHI_HEADER_LEN_OFFSET, afhi->header_len);
347 write_u8(buf + AFHI_CHANNELS_OFFSET, afhi->channels);
348 write_u32(buf + CHUNKS_TOTAL_OFFSET, afhi->chunks_total);
349 write_u32(buf + HEADER_LEN_OFFSET, afhi->header_len);
350 write_u32(buf + AFHI_MAX_CHUNK_SIZE_OFFSET, afhi->max_chunk_size);
351 write_u32(buf + CHUNK_TV_TV_SEC_OFFSET, afhi->chunk_tv.tv_sec);
352 write_u32(buf + CHUNK_TV_TV_USEC_OFFSET, afhi->chunk_tv.tv_usec);
353 p = buf + AFHI_INFO_STRING_OFFSET;
354 /*
355 * The below sprintf(3) calls are OK because our caller already made
356 * sure that buf is large enough.
357 */
358 p += sprintf(p, "%s", afhi->techinfo) + 1;
359 p += sprintf(p, "%s", afhi->tags.artist) + 1;
360 p += sprintf(p, "%s", afhi->tags.title) + 1;
361 p += sprintf(p, "%s", afhi->tags.year) + 1;
362 p += sprintf(p, "%s", afhi->tags.album) + 1;
363 sprintf(p, "%s", afhi->tags.comment);
364 }
365
366 /* does not load the chunk table */
367 static void load_afhi(const char *buf, struct afh_info *afhi)
368 {
369 afhi->seconds_total = read_u32(buf + AFHI_SECONDS_TOTAL_OFFSET);
370 afhi->bitrate = read_u32(buf + AFHI_BITRATE_OFFSET);
371 afhi->frequency = read_u32(buf + AFHI_FREQUENCY_OFFSET);
372 afhi->header_len = read_u32(buf + AFHI_HEADER_LEN_OFFSET);
373 afhi->channels = read_u8(buf + AFHI_CHANNELS_OFFSET);
374 afhi->chunks_total = read_u32(buf + CHUNKS_TOTAL_OFFSET);
375 afhi->header_len = read_u32(buf + HEADER_LEN_OFFSET);
376 afhi->max_chunk_size = read_u32(buf + AFHI_MAX_CHUNK_SIZE_OFFSET);
377 afhi->chunk_tv.tv_sec = read_u32(buf + CHUNK_TV_TV_SEC_OFFSET);
378 afhi->chunk_tv.tv_usec = read_u32(buf + CHUNK_TV_TV_USEC_OFFSET);
379 afhi->techinfo = (char *)buf + AFHI_INFO_STRING_OFFSET;
380 afhi->tags.artist = afhi->techinfo + strlen(afhi->techinfo) + 1;
381 afhi->tags.title = afhi->tags.artist + strlen(afhi->tags.artist) + 1;
382 afhi->tags.year = afhi->tags.title + strlen(afhi->tags.title) + 1;
383 afhi->tags.album = afhi->tags.year + strlen(afhi->tags.year) + 1;
384 afhi->tags.comment = afhi->tags.album + strlen(afhi->tags.album) + 1;
385 }
386
387 /* Only used for saving the chunk table, but not for loading. */
388 static unsigned sizeof_chunk_table(struct afh_info *afhi)
389 {
390 if (!afhi || !afhi->chunk_table)
391 return 0;
392 return 4 * (afhi->chunks_total + 1);
393 }
394
395 static void save_chunk_table(struct afh_info *afhi, char *buf)
396 {
397 uint32_t n;
398
399 if (!afhi->chunk_table || afhi->chunks_total == 0)
400 return;
401 for (n = 0; n <= afhi->chunks_total; n++)
402 write_u32(buf + 4 * n, afhi->chunk_table[n]);
403 }
404
405 static void load_chunk_table(struct afh_info *afhi, const struct osl_object *ct)
406 {
407 int i;
408 size_t sz;
409
410 if (!ct->data || ct->size < 4 * (afhi->chunks_total + 1)) {
411 afhi->chunk_table = NULL;
412 return;
413 }
414 sz = PARA_MIN(((size_t)afhi->chunks_total + 1) * 4, ct->size) + 1;
415 afhi->chunk_table = para_malloc(sz);
416 for (i = 0; i <= afhi->chunks_total && i * 4 + 3 < ct->size; i++)
417 afhi->chunk_table[i] = read_u32(ct->data + 4 * i);
418 }
419
420 /**
421 * Get the row of the audio file table corresponding to the given path.
422 *
423 * \param path The full path of the audio file.
424 * \param row Result pointer.
425 *
426 * \return Standard.
427 */
428 int aft_get_row_of_path(const char *path, struct osl_row **row)
429 {
430 struct osl_object obj = {.data = (char *)path, .size = strlen(path) + 1};
431
432 return osl(osl_get_row(audio_file_table, AFTCOL_PATH, &obj, row));
433 }
434
435 /**
436 * Get the row of the audio file table corresponding to the given hash value.
437 *
438 * \param hash The hash value of the desired audio file.
439 * \param row Result pointer.
440 *
441 * \return Standard.
442 */
443 static int aft_get_row_of_hash(unsigned char *hash, struct osl_row **row)
444 {
445 const struct osl_object obj = {.data = hash, .size = HASH_SIZE};
446 return osl(osl_get_row(audio_file_table, AFTCOL_HASH, &obj, row));
447 }
448
449 /*
450 * Get the audio file selector info object of a row.
451 *
452 * \param row Pointer to a row in the audio file table.
453 * \param obj Result pointer.
454 *
455 * \return Standard.
456 */
457 static int get_afsi_object_of_row(const struct osl_row *row,
458 struct osl_object *obj)
459 {
460 return osl(osl_get_object(audio_file_table, row, AFTCOL_AFSI, obj));
461 }
462
463 /**
464 * Get the osl object holding the audio file selector info, given a path.
465 *
466 *
467 * \param path The full path of the audio file.
468 * \param obj Result pointer.
469 *
470 * \return Positive on success, negative on errors.
471 */
472 static int get_afsi_object_of_path(const char *path, struct osl_object *obj)
473 {
474 struct osl_row *row;
475 int ret = aft_get_row_of_path(path, &row);
476 if (ret < 0)
477 return ret;
478 return get_afsi_object_of_row(row, obj);
479 }
480
481 /**
482 * Get the audio file selector info, given a row of the audio file table.
483 *
484 * \param row Pointer to a row in the audio file table.
485 * \param afsi Result pointer.
486 *
487 * \return Positive on success, negative on errors.
488 */
489 int get_afsi_of_row(const struct osl_row *row, struct afs_info *afsi)
490 {
491 struct osl_object obj;
492 int ret = get_afsi_object_of_row(row, &obj);
493 if (ret < 0)
494 return ret;
495 return load_afsi(afsi, &obj);
496 }
497
498 /*
499 * Get the audio file selector info, given the path of an audio table.
500 *
501 * \param path The full path of the audio file.
502 * \param afsi Result pointer.
503 *
504 * \return Standard.
505 */
506 static int get_afsi_of_path(const char *path, struct afs_info *afsi)
507 {
508 struct osl_object obj;
509 int ret = get_afsi_object_of_path(path, &obj);
510 if (ret < 0)
511 return ret;
512 return load_afsi(afsi, &obj);
513 }
514
515 /**
516 * Get the path of an audio file, given a row of the audio file table.
517 *
518 * \param row Pointer to a row in the audio file table.
519 * \param path Result pointer.
520 *
521 * The result is a pointer to memory-mapped data. The caller must not attempt
522 * to free it.
523 *
524 * \return Standard.
525 */
526 int get_audio_file_path_of_row(const struct osl_row *row, char **path)
527 {
528 struct osl_object path_obj;
529 int ret = osl(osl_get_object(audio_file_table, row, AFTCOL_PATH,
530 &path_obj));
531
532 if (ret < 0)
533 *path = NULL;
534 else
535 *path = path_obj.data;
536 return ret;
537 }
538
539 /**
540 * Get the object containing the hash value of an audio file, given a row.
541 *
542 * \param row Pointer to a row of the audio file table.
543 * \param obj Result pointer.
544 *
545 * \return The return value of the underlying call to osl_get_object().
546 *
547 * \sa \ref get_hash_of_row().
548 */
549 static int get_hash_object_of_aft_row(const struct osl_row *row,
550 struct osl_object *obj)
551 {
552 return osl(osl_get_object(audio_file_table, row, AFTCOL_HASH, obj));
553 }
554
555 /**
556 * Get the hash value of an audio file, given a row of the audio file table.
557 *
558 * \param row Pointer to a row of the audio file table.
559 * \param hash Result pointer.
560 *
561 * \a hash points to mapped data and must not be freed by the caller.
562 *
563 * \return The return value of the underlying call to
564 * get_hash_object_of_aft_row().
565 */
566 static int get_hash_of_row(const struct osl_row *row, unsigned char **hash)
567 {
568 struct osl_object obj;
569 int ret = get_hash_object_of_aft_row(row, &obj);
570
571 if (ret < 0)
572 return ret;
573 *hash = obj.data;
574 return 1;
575 }
576
577 /**
578 * Get the audio format handler info, given a row of the audio file table.
579 *
580 * \param row Pointer to a row of the audio file table.
581 * \param afhi Result pointer.
582 *
583 * \return The return value of the underlying call to osl_get_object().
584 *
585 * After the call the members of the afhi structure point to mapped memory
586 * which is owned by the osl table, Hence the caller must not attempt to free
587 * this memory by calling \ref clear_afhi().
588 */
589 int get_afhi_of_row(const struct osl_row *row, struct afh_info *afhi)
590 {
591 struct osl_object obj;
592 int ret;
593
594 assert(row);
595 ret = osl(osl_get_object(audio_file_table, row, AFTCOL_AFHI, &obj));
596 if (ret < 0)
597 return ret;
598 load_afhi(obj.data, afhi);
599 return 1;
600 }
601
602 /* returns shmid on success */
603 static int save_afd(struct audio_file_data *afd)
604 {
605 size_t size = sizeof(*afd) + sizeof_chunk_table(&afd->afhi);
606 int shmid, ret = shm_new(size);
607 void *shm_afd;
608 char *buf;
609
610 if (ret < 0)
611 return ret;
612 shmid = ret;
613 ret = shm_attach(shmid, ATTACH_RW, &shm_afd);
614 if (ret < 0)
615 goto err;
616 buf = shm_afd;
617 buf += sizeof(*afd);
618 save_chunk_table(&afd->afhi, buf);
619 if (afd->afhi.max_chunk_size == 0) { /* v0.5.x on-disk afhi */
620 set_max_chunk_size(&afd->afhi);
621 PARA_NOTICE_LOG("max chunk size unset, re-add required\n");
622 } else
623 PARA_INFO_LOG("using max chunk size from afhi\n");
624 afd->max_chunk_size = afd->afhi.max_chunk_size;
625 *(struct audio_file_data *)shm_afd = *afd;
626 shm_detach(shm_afd);
627 return shmid;
628 err:
629 shm_destroy(shmid);
630 return ret;
631 }
632
633 /**
634 * Extract a afd stored in a shared memory area.
635 *
636 * Attach the shared memory area given by \a shmid, load the audio file data
637 * stored therein and detach the area afterwards. Called by vss, after
638 * receiving a positive response to the request for the next audio file.
639 +
640 * \param shmid The identifier of the shared memory area containing the afd.
641 * \param afd Result pointer.
642 *
643 * \return Standard.
644 */
645 int load_afd(int shmid, struct audio_file_data *afd)
646 {
647 void *shm_afd;
648 int ret;
649 struct osl_object obj;
650
651 ret = shm_attach(shmid, ATTACH_RO, &shm_afd);
652 if (ret < 0)
653 return ret;
654 ret = shm_size(shmid, &obj.size);
655 if (ret < 0)
656 goto detach;
657 *afd = *(struct audio_file_data *)shm_afd;
658 obj.data = shm_afd + sizeof(*afd);
659 obj.size -= sizeof(*afd);
660 load_chunk_table(&afd->afhi, &obj);
661 ret = 1;
662 detach:
663 shm_detach(shm_afd);
664 return ret;
665 }
666
667 static int get_local_time(uint64_t *seconds, char *buf, size_t size,
668 time_t current_time, enum ls_listing_mode lm)
669 {
670 struct tm *tm;
671 /*
672 * Omit year but show time if the given value is closer to the current
673 * time than this many seconds.
674 */
675 const time_t m = 6 * 30 * 24 * 3600; /* six months */
676
677 tm = localtime((time_t *)seconds);
678 if (!tm)
679 return -E_LOCALTIME;
680 if (lm == LS_MODE_MBOX) {
681 if (!strftime(buf, size, "%c", tm))
682 return -E_STRFTIME;
683 return 1;
684 }
685 if (*seconds > current_time - m && *seconds < current_time + m) {
686 if (!strftime(buf, size, "%b %e %k:%M", tm))
687 return -E_STRFTIME;
688 return 1;
689 }
690 /*
691 * If the given time is more than six month away from the current time,
692 * we print only the year. The additional space character in the format
693 * string below makes the formatted date align nicely with dates that
694 * contain the time (those written by the above strftime() statement).
695 */
696 if (!strftime(buf, size, "%b %e %Y", tm))
697 return -E_STRFTIME;
698 return 1;
699 }
700
701 /** Compute the number of (decimal) digits of a number. */
702 #define GET_NUM_DIGITS(x, num) { \
703 typeof((x)) _tmp = PARA_ABS(x); \
704 *num = 1; \
705 if ((_tmp)) \
706 while ((_tmp) > 9) { \
707 (_tmp) /= 10; \
708 (*num)++; \
709 } \
710 }
711
712 __a_const static short unsigned get_duration_width(int seconds)
713 {
714 short unsigned width;
715 unsigned hours = seconds / 3600, mins = (seconds % 3600) / 60;
716
717 if (!hours) /* less than one hour => m:ss or mm:ss => 4 or 5 digits */
718 return 4 + (mins > 9);
719 /* more than one hour => h:mm:ss, hh:mm:ss, hhh:mm:ss, ... */
720 GET_NUM_DIGITS(hours, &width);
721 return width + 6;
722 }
723
724 static void get_duration_buf(int seconds, char *buf, struct ls_options *opts)
725 {
726 unsigned hours = seconds / 3600, mins = (seconds % 3600) / 60;
727 short unsigned max_width;
728
729 if (!hours) { /* m:ss or mm:ss */
730 max_width = opts->mode == LS_MODE_LONG?
731 opts->widths.duration_width : 4;
732 sprintf(buf, "%*u:%02d", max_width - 3, mins, seconds % 60);
733 } else { /* more than one hour => h:mm:ss, hh:mm:ss, hhh:mm:ss, ... */
734 max_width = opts->mode == LS_MODE_LONG?
735 opts->widths.duration_width : 7;
736 sprintf(buf, "%*u:%02u:%02d", max_width - 6, hours, mins,
737 seconds % 60);
738 }
739 }
740
741 static int write_attribute_items(struct para_buffer *b,
742 const char *att_bitmap, struct afs_info *afsi)
743 {
744 char *att_text;
745 int ret;
746
747 WRITE_STATUS_ITEM(b, SI_attributes_bitmap, "%s\n", att_bitmap);
748 ret = get_attribute_text(&afsi->attributes, " ", &att_text);
749 if (ret < 0)
750 return ret;
751 WRITE_STATUS_ITEM(b, SI_attributes_txt, "%s\n", att_text);
752 free(att_text);
753 return ret;
754 }
755
756 static void write_lyrics_items(struct para_buffer *b, struct afs_info *afsi)
757 {
758 char *lyrics_name;
759
760 WRITE_STATUS_ITEM(b, SI_lyrics_id, "%u\n", afsi->lyrics_id);
761 lyr_get_name_by_id(afsi->lyrics_id, &lyrics_name);
762 WRITE_STATUS_ITEM(b, SI_lyrics_name, "%s\n", lyrics_name?
763 lyrics_name : "(none)");
764 }
765
766 static void write_image_items(struct para_buffer *b, struct afs_info *afsi)
767 {
768 char *image_name;
769
770 WRITE_STATUS_ITEM(b, SI_image_id, "%u\n", afsi->image_id);
771 img_get_name_by_id(afsi->image_id, &image_name);
772 WRITE_STATUS_ITEM(b, SI_image_name, "%s\n", image_name?
773 image_name : "(none)");
774 }
775
776 static void write_filename_items(struct para_buffer *b, const char *path,
777 bool basename)
778 {
779 char *val;
780
781 if (basename) {
782 WRITE_STATUS_ITEM(b, SI_basename, "%s\n", path);
783 return;
784 }
785 WRITE_STATUS_ITEM(b, SI_path, "%s\n", path);
786 val = para_basename(path);
787 WRITE_STATUS_ITEM(b, SI_basename, "%s\n", val? val : "");
788 val = para_dirname(path);
789 WRITE_STATUS_ITEM(b, SI_directory, "%s\n", val? val : "");
790 free(val);
791 }
792
793 static int print_chunk_table(struct ls_data *d, struct para_buffer *b)
794 {
795 struct osl_object chunk_table_obj;
796 struct osl_row *aft_row;
797 int ret, i;
798 char *buf;
799
800 ret = aft_get_row_of_hash(d->hash, &aft_row);
801 if (ret < 0)
802 return ret;
803 ret = osl(osl_open_disk_object(audio_file_table, aft_row,
804 AFTCOL_CHUNKS, &chunk_table_obj));
805 if (ret < 0)
806 return ret;
807 para_printf(b, "%s\n"
808 "chunk_time: %lu:%lu\nchunk_offsets: ",
809 d->path,
810 (long unsigned) d->afhi.chunk_tv.tv_sec,
811 (long unsigned) d->afhi.chunk_tv.tv_usec
812 );
813 buf = chunk_table_obj.data;
814 for (
815 i = 0;
816 i <= d->afhi.chunks_total && 4 * i + 3 < chunk_table_obj.size;
817 i++
818 )
819 para_printf(b, "%u ", (unsigned) read_u32(buf + 4 * i));
820 para_printf(b, "\n");
821 ret = 1;
822 osl_close_disk_object(&chunk_table_obj);
823 return ret;
824 }
825
826 static int print_list_item(struct ls_data *d, struct ls_options *opts,
827 struct para_buffer *b, time_t current_time)
828 {
829 const struct lls_opt_result *r_a = SERVER_CMD_OPT_RESULT(LS, ADMISSIBLE, opts->lpr);
830 const struct lls_opt_result *r_b = SERVER_CMD_OPT_RESULT(LS, BASENAME, opts->lpr);
831 const struct lls_opt_result *r_d = SERVER_CMD_OPT_RESULT(LS, UNIX_DATE, opts->lpr);
832 int ret;
833 char att_buf[65];
834 char last_played_time[30];
835 char duration_buf[30]; /* nobody has an audio file long enough to overflow this */
836 struct afs_info *afsi = &d->afsi;
837 struct afh_info *afhi = &d->afhi;
838 char asc_hash[2 * HASH_SIZE + 1];
839
840 if (opts->mode == LS_MODE_SHORT) {
841 para_printf(b, "%s\n", d->path);
842 ret = 1;
843 goto out;
844 }
845 if (opts->mode == LS_MODE_CHUNKS) {
846 ret = print_chunk_table(d, b);
847 goto out;
848 }
849 get_attribute_bitmap(&afsi->attributes, att_buf);
850 if (lls_opt_given(r_d))
851 sprintf(last_played_time, "%llu",
852 (long long unsigned)afsi->last_played);
853 else {
854 ret = get_local_time(&afsi->last_played, last_played_time,
855 sizeof(last_played_time), current_time, opts->mode);
856 if (ret < 0)
857 goto out;
858 }
859 get_duration_buf(afhi->seconds_total, duration_buf, opts);
860 if (opts->mode == LS_MODE_LONG) {
861 struct ls_widths *w = &opts->widths;
862 if (lls_opt_given(r_a))
863 para_printf(b, "%*li ", opts->widths.score_width,
864 d->score);
865 para_printf(b,
866 "%s " /* attributes */
867 "%*u " /* amp */
868 "%*u " /* image_id */
869 "%*u " /* lyrics_id */
870 "%*u " /* bitrate */
871 "%*s " /* audio format */
872 "%*u " /* frequency */
873 "%u " /* channels */
874 "%s " /* duration */
875 "%*u " /* num_played */
876 "%s " /* last_played */
877 "%s\n", /* path */
878 att_buf,
879 w->amp_width, afsi->amp,
880 w->image_id_width, afsi->image_id,
881 w->lyrics_id_width, afsi->lyrics_id,
882 w->bitrate_width, afhi->bitrate,
883 w->audio_format_width,
884 audio_format_name(afsi->audio_format_id),
885 w->frequency_width, afhi->frequency,
886 afhi->channels,
887 duration_buf,
888 w->num_played_width, afsi->num_played,
889 last_played_time,
890 d->path
891 );
892 ret = 1;
893 goto out;
894 }
895 if (opts->mode == LS_MODE_MBOX) {
896 const char *bn = para_basename(d->path);
897 para_printf(b,
898 "From foo@localhost %s\n"
899 "Received: from\nTo: bar\nFrom: a\n"
900 "Subject: %s\n\n",
901 last_played_time,
902 bn? bn : "?");
903 }
904 write_filename_items(b, d->path, lls_opt_given(r_b));
905 if (lls_opt_given(r_a))
906 WRITE_STATUS_ITEM(b, SI_score, "%li\n", d->score);
907 ret = write_attribute_items(b, att_buf, afsi);
908 if (ret < 0)
909 goto out;
910 write_image_items(b, afsi);
911 write_lyrics_items(b, afsi);
912 hash_to_asc(d->hash, asc_hash);
913 WRITE_STATUS_ITEM(b, SI_hash, "%s\n", asc_hash);
914 WRITE_STATUS_ITEM(b, SI_bitrate, "%dkbit/s\n", afhi->bitrate);
915 WRITE_STATUS_ITEM(b, SI_format, "%s\n",
916 audio_format_name(afsi->audio_format_id));
917 WRITE_STATUS_ITEM(b, SI_frequency, "%dHz\n", afhi->frequency);
918 WRITE_STATUS_ITEM(b, SI_channels, "%d\n", afhi->channels);
919 WRITE_STATUS_ITEM(b, SI_duration, "%s\n", duration_buf);
920 WRITE_STATUS_ITEM(b, SI_seconds_total, "%" PRIu32 "\n",
921 afhi->seconds_total);
922 WRITE_STATUS_ITEM(b, SI_last_played, "%s\n", last_played_time);
923 WRITE_STATUS_ITEM(b, SI_num_played, "%u\n", afsi->num_played);
924 WRITE_STATUS_ITEM(b, SI_amplification, "%u\n", afsi->amp);
925 WRITE_STATUS_ITEM(b, SI_chunk_time, "%lu\n", tv2ms(&afhi->chunk_tv));
926 WRITE_STATUS_ITEM(b, SI_num_chunks, "%" PRIu32 "\n",
927 afhi->chunks_total);
928 WRITE_STATUS_ITEM(b, SI_max_chunk_size, "%" PRIu32 "\n",
929 afhi->max_chunk_size);
930 WRITE_STATUS_ITEM(b, SI_techinfo, "%s\n", afhi->techinfo);
931 WRITE_STATUS_ITEM(b, SI_artist, "%s\n", afhi->tags.artist);
932 WRITE_STATUS_ITEM(b, SI_title, "%s\n", afhi->tags.title);
933 WRITE_STATUS_ITEM(b, SI_year, "%s\n", afhi->tags.year);
934 WRITE_STATUS_ITEM(b, SI_album, "%s\n", afhi->tags.album);
935 WRITE_STATUS_ITEM(b, SI_comment, "%s\n", afhi->tags.comment);
936 if (opts->mode == LS_MODE_MBOX) {
937 struct osl_object lyrics_def;
938 lyr_get_def_by_id(afsi->lyrics_id, &lyrics_def);
939 if (lyrics_def.data) {
940 para_printf(b, "Lyrics:\n~~~~~~~\n%s",
941 (char *)lyrics_def.data);
942 osl_close_disk_object(&lyrics_def);
943 }
944 }
945 out:
946 return ret;
947 }
948
949 static void make_inode_status_items(struct para_buffer *pb)
950 {
951 struct stat statbuf = {.st_size = 0};
952 char *path, mtime_str[30] = "\0";
953 struct tm mtime_tm;
954 int ret;
955
956 ret = get_audio_file_path_of_row(current_aft_row, &path);
957 if (ret < 0)
958 goto out;
959 ret = stat(path, &statbuf);
960 if (ret < 0)
961 goto out;
962 localtime_r(&statbuf.st_mtime, &mtime_tm);
963 ret = strftime(mtime_str, 29, "%b %d %Y", &mtime_tm);
964 assert(ret > 0); /* number of bytes placed in mtime_str */
965 out:
966 WRITE_STATUS_ITEM(pb, SI_mtime, "%s\n", mtime_str);
967 WRITE_STATUS_ITEM(pb, SI_file_size, "%ld\n", statbuf.st_size / 1024);
968 }
969
970 /**
971 * Deallocate and invalidate the status item strings.
972 *
973 * This needs to be a public function so that afs.c can call it on shutdown.
974 */
975 void free_status_items(void)
976 {
977 freep(&status_items);
978 freep(&parser_friendly_status_items);
979 }
980
981 static void make_status_items(void)
982 {
983 const struct lls_command *cmd = SERVER_CMD_CMD_PTR(LS);
984 char *argv[] = {"ls", "--admissible", "--listing-mode=verbose"};
985 struct ls_options opts = {.mode = LS_MODE_VERBOSE};
986 struct para_buffer pb = {.max_size = shm_get_shmmax() - 1};
987 time_t current_time;
988 int ret;
989
990 free_status_items();
991 if (!status_item_ls_data.path) /* no audio file open */
992 return;
993 ret = lls_parse(ARRAY_SIZE(argv), argv, cmd, &opts.lpr, NULL);
994 assert(ret >= 0);
995 time(&current_time);
996 ret = print_list_item(&status_item_ls_data, &opts, &pb, current_time);
997 if (ret < 0)
998 goto out;
999 make_inode_status_items(&pb);
1000 status_items = pb.buf;
1001
1002 memset(&pb, 0, sizeof(pb));
1003 pb.max_size = shm_get_shmmax() - 1;
1004 pb.flags = PBF_SIZE_PREFIX;
1005 ret = print_list_item(&status_item_ls_data, &opts, &pb, current_time);
1006 if (ret < 0)
1007 goto out;
1008 make_inode_status_items(&pb);
1009 parser_friendly_status_items = pb.buf;
1010 ret = 1;
1011 out:
1012 if (ret < 0) {
1013 PARA_WARNING_LOG("could not create status items: %s\n",
1014 para_strerror(-ret));
1015 free_status_items();
1016 }
1017 lls_free_parse_result(opts.lpr, cmd);
1018 }
1019
1020 /**
1021 * Open the audio file with highest score and set up an afd structure.
1022 *
1023 * \param afd Result pointer.
1024 *
1025 * On success, the numplayed field of the audio file selector info is increased
1026 * and the lastplayed time is set to the current time. Finally, the score of
1027 * the audio file is updated.
1028 *
1029 * \return Positive shmid on success, negative on errors.
1030 */
1031 int open_and_update_audio_file(struct audio_file_data *afd)
1032 {
1033 unsigned char file_hash[HASH_SIZE];
1034 struct osl_object afsi_obj;
1035 struct afs_info new_afsi;
1036 int ret;
1037 struct afsi_change_event_data aced;
1038 struct osl_object map, chunk_table_obj;
1039 struct ls_data *d = &status_item_ls_data;
1040 unsigned char *tmp_hash;
1041 again:
1042 ret = score_get_best(&current_aft_row, &d->score);
1043 if (ret < 0)
1044 return ret;
1045 /*
1046 * get_hash_of_row() and get_audio_file_path_of_row() initialize
1047 * their pointer argument to point to memory-mapped files. These pointers
1048 * become stale after a new audio file has been added or after the
1049 * server process received SIGHUP. For in both cases libosl unmaps and
1050 * remaps the underlying database files, and this remapping may well
1051 * change the starting address of the mapping. To avoid stale pointer
1052 * references we create copies on the heap.
1053 */
1054 ret = get_hash_of_row(current_aft_row, &tmp_hash);
1055 if (ret < 0)
1056 return ret;
1057 if (!d->hash)
1058 d->hash = para_malloc(HASH_SIZE);
1059 memcpy(d->hash, tmp_hash, HASH_SIZE);
1060 free(d->path);
1061 ret = get_audio_file_path_of_row(current_aft_row, &d->path);
1062 if (ret < 0)
1063 return ret;
1064 PARA_NOTICE_LOG("%s\n", d->path);
1065 d->path = para_strdup(d->path);
1066
1067 ret = get_afsi_object_of_row(current_aft_row, &afsi_obj);
1068 if (ret < 0)
1069 return ret;
1070 ret = load_afsi(&d->afsi, &afsi_obj);
1071 if (ret < 0)
1072 return ret;
1073 ret = get_afhi_of_row(current_aft_row, &afd->afhi);
1074 if (ret < 0)
1075 return ret;
1076 d->afhi = afd->afhi;
1077 d->afhi.chunk_table = afd->afhi.chunk_table = NULL;
1078 ret = osl(osl_open_disk_object(audio_file_table, current_aft_row,
1079 AFTCOL_CHUNKS, &chunk_table_obj));
1080 if (ret < 0) {
1081 if (!afh_supports_dynamic_chunks(d->afsi.audio_format_id))
1082 return ret;
1083 PARA_INFO_LOG("no chunk table for %s\n", d->path);
1084 chunk_table_obj.data = NULL;
1085 chunk_table_obj.size = 0;
1086 } else {
1087 PARA_INFO_LOG("chunk table: %zu bytes\n", chunk_table_obj.size);
1088 }
1089 ret = mmap_full_file(d->path, O_RDONLY, &map.data, &map.size, &afd->fd);
1090 if (ret < 0)
1091 goto out;
1092 hash_function(map.data, map.size, file_hash);
1093 ret = hash_compare(file_hash, d->hash);
1094 para_munmap(map.data, map.size);
1095 if (ret) {
1096 ret = -E_HASH_MISMATCH;
1097 goto out;
1098 }
1099 new_afsi = d->afsi;
1100 new_afsi.num_played++;
1101 new_afsi.last_played = time(NULL);
1102 save_afsi(&new_afsi, &afsi_obj); /* in-place update */
1103
1104 afd->audio_format_id = d->afsi.audio_format_id;
1105 load_chunk_table(&afd->afhi, &chunk_table_obj);
1106 aced.aft_row = current_aft_row;
1107 aced.old_afsi = &d->afsi;
1108 /*
1109 * No need to update the status items as the AFSI_CHANGE event will
1110 * recreate them.
1111 */
1112 ret = afs_event(AFSI_CHANGE, NULL, &aced);
1113 if (ret < 0)
1114 goto out;
1115 ret = save_afd(afd);
1116 out:
1117 free(afd->afhi.chunk_table);
1118 if (chunk_table_obj.data)
1119 osl_close_disk_object(&chunk_table_obj);
1120 if (ret < 0) {
1121 PARA_ERROR_LOG("%s: %s\n", d->path, para_strerror(-ret));
1122 ret = score_delete(current_aft_row);
1123 if (ret >= 0)
1124 goto again;
1125 }
1126 return ret;
1127 }
1128
1129 static int ls_hash_compare(const void *a, const void *b)
1130 {
1131 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1132 return memcmp(d1->hash, d2->hash, HASH_SIZE);
1133 }
1134
1135 static int ls_audio_format_compare(const void *a, const void *b)
1136 {
1137 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1138 return NUM_COMPARE(d1->afsi.audio_format_id, d2->afsi.audio_format_id);
1139 }
1140
1141 static int ls_duration_compare(const void *a, const void *b)
1142 {
1143 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1144 return NUM_COMPARE(d1->afhi.seconds_total, d2->afhi.seconds_total);
1145 }
1146
1147 static int ls_bitrate_compare(const void *a, const void *b)
1148 {
1149 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1150 return NUM_COMPARE(d1->afhi.bitrate, d2->afhi.bitrate);
1151 }
1152
1153 static int ls_lyrics_id_compare(const void *a, const void *b)
1154 {
1155 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1156 return NUM_COMPARE(d1->afsi.lyrics_id, d2->afsi.lyrics_id);
1157 }
1158
1159 static int ls_image_id_compare(const void *a, const void *b)
1160 {
1161 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1162 return NUM_COMPARE(d1->afsi.image_id, d2->afsi.image_id);
1163 }
1164
1165 static int ls_channels_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->afhi.channels, d2->afhi.channels);
1169 }
1170
1171 static int ls_frequency_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.frequency, d2->afhi.frequency);
1175 }
1176
1177 static int ls_num_played_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->afsi.num_played, d2->afsi.num_played);
1181 }
1182
1183 static int ls_last_played_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.last_played, d2->afsi.last_played);
1187 }
1188
1189 static int ls_score_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->score, d2->score);
1193 }
1194
1195 static int ls_path_compare(const void *a, const void *b)
1196 {
1197 struct ls_data *d1 = *(struct ls_data **)a, *d2 = *(struct ls_data **)b;
1198 return strcmp(d1->path, d2->path);
1199 }
1200
1201 static inline bool admissible_only(struct ls_options *opts)
1202 {
1203 return SERVER_CMD_OPT_GIVEN(LS, ADMISSIBLE, opts->lpr)
1204 || opts->sorting == LS_SORT_BY_SCORE;
1205 }
1206
1207 static int sort_matching_paths(struct ls_options *options)
1208 {
1209 const struct lls_opt_result *r_b = SERVER_CMD_OPT_RESULT(LS, BASENAME,
1210 options->lpr);
1211 size_t nmemb = options->num_matching_paths;
1212 size_t size = sizeof(*options->data_ptr);
1213 int (*compar)(const void *, const void *);
1214 int i;
1215
1216 options->data_ptr = para_malloc(nmemb * sizeof(*options->data_ptr));
1217 for (i = 0; i < nmemb; i++)
1218 options->data_ptr[i] = options->data + i;
1219
1220 /* In these cases the array is already sorted */
1221 if (admissible_only(options)) {
1222 if (options->sorting == LS_SORT_BY_SCORE)
1223 return 1;
1224 } else {
1225 if (options->sorting == LS_SORT_BY_PATH && !lls_opt_given(r_b))
1226 return 1;
1227 }
1228
1229 switch (options->sorting) {
1230 case LS_SORT_BY_PATH:
1231 compar = ls_path_compare; break;
1232 case LS_SORT_BY_SCORE:
1233 compar = ls_score_compare; break;
1234 case LS_SORT_BY_LAST_PLAYED:
1235 compar = ls_last_played_compare; break;
1236 case LS_SORT_BY_NUM_PLAYED:
1237 compar = ls_num_played_compare; break;
1238 case LS_SORT_BY_FREQUENCY:
1239 compar = ls_frequency_compare; break;
1240 case LS_SORT_BY_CHANNELS:
1241 compar = ls_channels_compare; break;
1242 case LS_SORT_BY_IMAGE_ID:
1243 compar = ls_image_id_compare; break;
1244 case LS_SORT_BY_LYRICS_ID:
1245 compar = ls_lyrics_id_compare; break;
1246 case LS_SORT_BY_BITRATE:
1247 compar = ls_bitrate_compare; break;
1248 case LS_SORT_BY_DURATION:
1249 compar = ls_duration_compare; break;
1250 case LS_SORT_BY_AUDIO_FORMAT:
1251 compar = ls_audio_format_compare; break;
1252 case LS_SORT_BY_HASH:
1253 compar = ls_hash_compare; break;
1254 default:
1255 return -E_BAD_SORT;
1256 }
1257 qsort(options->data_ptr, nmemb, size, compar);
1258 return 1;
1259 }
1260
1261 /* row is either an aft_row or a row of the score table */
1262 /* TODO: Only compute widths if we need them */
1263 static int prepare_ls_row(struct osl_row *row, void *ls_opts)
1264 {
1265 int ret, i;
1266 struct ls_options *options = ls_opts;
1267 bool basename_given = SERVER_CMD_OPT_GIVEN(LS, BASENAME, options->lpr);
1268 struct ls_data *d;
1269 struct ls_widths *w;
1270 unsigned short num_digits;
1271 unsigned tmp, num_inputs;
1272 struct osl_row *aft_row;
1273 long score;
1274 char *path;
1275
1276 if (admissible_only(options)) {
1277 ret = get_score_and_aft_row(row, &score, &aft_row);
1278 if (ret < 0)
1279 return ret;
1280 } else {
1281 aft_row = row;
1282 score = 0;
1283 }
1284 ret = get_audio_file_path_of_row(aft_row, &path);
1285 if (ret < 0)
1286 return ret;
1287 if (basename_given) {
1288 char *p = strrchr(path, '/');
1289 if (p)
1290 path = p + 1;
1291 }
1292 num_inputs = lls_num_inputs(options->lpr);
1293 if (num_inputs > 0) {
1294 for (i = 0; i < num_inputs; i++) {
1295 ret = fnmatch(lls_input(i, options->lpr), path, 0);
1296 if (!ret)
1297 break;
1298 if (ret == FNM_NOMATCH)
1299 continue;
1300 return -E_FNMATCH;
1301 }
1302 if (i >= num_inputs) /* no match */
1303 return 1;
1304 }
1305 tmp = options->num_matching_paths++;
1306 if (options->num_matching_paths > options->array_size) {
1307 options->array_size++;
1308 options->array_size *= 2;
1309 options->data = para_realloc(options->data, options->array_size
1310 * sizeof(*options->data));
1311 }
1312 d = options->data + tmp;
1313 ret = get_afsi_of_row(aft_row, &d->afsi);
1314 if (ret < 0)
1315 return ret;
1316 ret = get_afhi_of_row(aft_row, &d->afhi);
1317 if (ret < 0)
1318 return ret;
1319 d->path = path;
1320 ret = get_hash_of_row(aft_row, &d->hash);
1321 if (ret < 0)
1322 goto err;
1323 w = &options->widths;
1324 GET_NUM_DIGITS(d->afsi.image_id, &num_digits);
1325 w->image_id_width = PARA_MAX(w->image_id_width, num_digits);
1326 GET_NUM_DIGITS(d->afsi.lyrics_id, &num_digits);
1327 w->lyrics_id_width = PARA_MAX(w->lyrics_id_width, num_digits);
1328 GET_NUM_DIGITS(d->afhi.bitrate, &num_digits);
1329 w->bitrate_width = PARA_MAX(w->bitrate_width, num_digits);
1330 GET_NUM_DIGITS(d->afhi.frequency, &num_digits);
1331 w->frequency_width = PARA_MAX(w->frequency_width, num_digits);
1332 GET_NUM_DIGITS(d->afsi.num_played, &num_digits);
1333 w->num_played_width = PARA_MAX(w->num_played_width, num_digits);
1334 /* get the number of chars to print this amount of time */
1335 num_digits = get_duration_width(d->afhi.seconds_total);
1336 w->duration_width = PARA_MAX(w->duration_width, num_digits);
1337 GET_NUM_DIGITS(d->afsi.amp, &num_digits);
1338 w->amp_width = PARA_MAX(w->amp_width, num_digits);
1339 num_digits = strlen(audio_format_name(d->afsi.audio_format_id));
1340 w->audio_format_width = PARA_MAX(w->audio_format_width, num_digits);
1341 if (admissible_only(options)) {
1342 GET_NUM_DIGITS(score, &num_digits);
1343 num_digits++; /* add one for the sign (space or "-") */
1344 w->score_width = PARA_MAX(w->score_width, num_digits);
1345 d->score = score;
1346 }
1347 return 1;
1348 err:
1349 return ret;
1350 }
1351
1352 static int com_ls_callback(struct afs_callback_arg *aca)
1353 {
1354 const struct lls_command *cmd = SERVER_CMD_CMD_PTR(LS);
1355 struct ls_options *opts = aca->query.data;
1356 int i = 0, ret;
1357 time_t current_time;
1358 const struct lls_opt_result *r_r;
1359
1360 ret = lls_deserialize_parse_result(
1361 (char *)aca->query.data + sizeof(*opts), cmd, &opts->lpr);
1362 assert(ret >= 0);
1363 r_r = SERVER_CMD_OPT_RESULT(LS, REVERSE, opts->lpr);
1364
1365 aca->pbout.flags = (opts->mode == LS_MODE_PARSER)? PBF_SIZE_PREFIX : 0;
1366 if (admissible_only(opts))
1367 ret = admissible_file_loop(opts, prepare_ls_row);
1368 else
1369 ret = osl(osl_rbtree_loop(audio_file_table, AFTCOL_PATH, opts,
1370 prepare_ls_row));
1371 if (ret < 0)
1372 goto out;
1373 if (opts->num_matching_paths == 0) {
1374 ret = lls_num_inputs(opts->lpr) > 0? -E_NO_MATCH : 0;
1375 goto out;
1376 }
1377 ret = sort_matching_paths(opts);
1378 if (ret < 0)
1379 goto out;
1380 time(&current_time);
1381 if (lls_opt_given(r_r))
1382 for (i = opts->num_matching_paths - 1; i >= 0; i--) {
1383 ret = print_list_item(opts->data_ptr[i], opts,
1384 &aca->pbout, current_time);
1385 if (ret < 0)
1386 goto out;
1387 }
1388 else
1389 for (i = 0; i < opts->num_matching_paths; i++) {
1390 ret = print_list_item(opts->data_ptr[i], opts,
1391 &aca->pbout, current_time);
1392 if (ret < 0)
1393 goto out;
1394 }
1395 out:
1396 lls_free_parse_result(opts->lpr, cmd);
1397 free(opts->data);
1398 free(opts->data_ptr);
1399 return ret;
1400 }
1401
1402 static int com_ls(struct command_context *cc, struct lls_parse_result *lpr)
1403 {
1404 const struct lls_command *cmd = SERVER_CMD_CMD_PTR(LS);
1405 struct ls_options *opts;
1406 struct osl_object query;
1407 const struct lls_opt_result *r_l = SERVER_CMD_OPT_RESULT(LS, LISTING_MODE,
1408 lpr);
1409 const struct lls_opt_result *r_s = SERVER_CMD_OPT_RESULT(LS, SORT, lpr);
1410 int ret;
1411 char *slpr;
1412
1413 ret = lls_serialize_parse_result(lpr, cmd, NULL, &query.size);
1414 assert(ret >= 0);
1415 query.size += sizeof(*opts);
1416 query.data = para_malloc(query.size);
1417 opts = query.data;
1418 memset(opts, 0, sizeof(*opts));
1419 slpr = query.data + sizeof(*opts);
1420 ret = lls_serialize_parse_result(lpr, cmd, &slpr, NULL);
1421 assert(ret >= 0);
1422 opts->mode = LS_MODE_SHORT;
1423 opts->sorting = LS_SORT_BY_PATH;
1424 if (lls_opt_given(r_l)) {
1425 const char *val = lls_string_val(0, r_l);
1426 if (!strcmp(val, "l") || !strcmp(val, "long"))
1427 opts->mode = LS_MODE_LONG;
1428 else if (!strcmp(val, "s") || !strcmp(val, "short"))
1429 opts->mode = LS_MODE_SHORT;
1430 else if (!strcmp(val, "v") || !strcmp(val, "verbose"))
1431 opts->mode = LS_MODE_VERBOSE;
1432 else if (!strcmp(val, "m") || !strcmp(val, "mbox"))
1433 opts->mode = LS_MODE_MBOX;
1434 else if (!strcmp(val, "c") || !strcmp(val, "chunk-table"))
1435 opts->mode = LS_MODE_MBOX;
1436 else if (!strcmp(val, "p") || !strcmp(val, "parser-friendly"))
1437 opts->mode = LS_MODE_PARSER;
1438 else {
1439 ret = -E_AFT_SYNTAX;
1440 goto out;
1441 }
1442 }
1443 if (lls_opt_given(r_s)) {
1444 const char *val = lls_string_val(0, r_s);
1445 if (!strcmp(val, "p") || !strcmp(val, "path"))
1446 opts->sorting = LS_SORT_BY_PATH;
1447 else if (!strcmp(val, "s") || !strcmp(val, "score"))
1448 opts->sorting = LS_SORT_BY_SCORE;
1449 else if (!strcmp(val, "l") || !strcmp(val, "lastplayed"))
1450 opts->sorting = LS_SORT_BY_LAST_PLAYED;
1451 else if (!strcmp(val, "n") || !strcmp(val, "numplayed"))
1452 opts->sorting = LS_SORT_BY_NUM_PLAYED;
1453 else if (!strcmp(val, "f") || !strcmp(val, "frquency"))
1454 opts->sorting = LS_SORT_BY_FREQUENCY;
1455 else if (!strcmp(val, "c") || !strcmp(val, "channels"))
1456 opts->sorting = LS_SORT_BY_CHANNELS;
1457 else if (!strcmp(val, "i") || !strcmp(val, "image-id"))
1458 opts->sorting = LS_SORT_BY_IMAGE_ID;
1459 else if (!strcmp(val, "y") || !strcmp(val, "lyrics-id"))
1460 opts->sorting = LS_SORT_BY_LYRICS_ID;
1461 else if (!strcmp(val, "b") || !strcmp(val, "bitrate"))
1462 opts->sorting = LS_SORT_BY_BITRATE;
1463 else if (!strcmp(val, "d") || !strcmp(val, "duration"))
1464 opts->sorting = LS_SORT_BY_DURATION;
1465 else if (!strcmp(val, "a") || !strcmp(val, "audio-format"))
1466 opts->sorting = LS_SORT_BY_AUDIO_FORMAT;
1467 else if (!strcmp(val, "h") || !strcmp(val, "hash"))
1468 opts->sorting = LS_SORT_BY_HASH;
1469 else {
1470 ret = -E_AFT_SYNTAX;
1471 goto out;
1472 }
1473 }
1474 ret = send_callback_request(com_ls_callback, &query,
1475 afs_cb_result_handler, cc);
1476 out:
1477 free(query.data);
1478 return ret;
1479 }
1480 EXPORT_SERVER_CMD_HANDLER(ls);
1481
1482 /**
1483 * Call the given function for each file in the audio file table.
1484 *
1485 * \param private_data An arbitrary data pointer, passed to \a func.
1486 * \param func The custom function to be called.
1487 *
1488 * \return Standard.
1489 */
1490 int audio_file_loop(void *private_data, osl_rbtree_loop_func *func)
1491 {
1492 return osl(osl_rbtree_loop(audio_file_table, AFTCOL_HASH, private_data,
1493 func));
1494 }
1495
1496 static int find_hash_sister(unsigned char *hash, struct osl_row **result)
1497 {
1498 int ret = aft_get_row_of_hash(hash, result);
1499
1500 if (ret == -OSL_ERRNO_TO_PARA_ERROR(E_OSL_RB_KEY_NOT_FOUND))
1501 return 0;
1502 return ret;
1503 }
1504
1505 static int find_path_brother(const char *path, struct osl_row **result)
1506 {
1507 int ret = aft_get_row_of_path(path, result);
1508
1509 if (ret == -OSL_ERRNO_TO_PARA_ERROR(E_OSL_RB_KEY_NOT_FOUND))
1510 return 0;
1511 return ret;
1512 }
1513
1514 /** The format of the data stored by save_audio_file_data(). */
1515 enum com_add_buffer_offsets {
1516 /* afhi (if present) starts at this offset. */
1517 CAB_AFHI_OFFSET_POS = 0,
1518 /** Start of the chunk table (if present). */
1519 CAB_CHUNKS_OFFSET_POS = 4,
1520 /** Start of the (serialized) lopsub parse result. */
1521 CAB_LPR_OFFSET = 8,
1522 /** Audio format id. */
1523 CAB_AUDIO_FORMAT_ID_OFFSET = 12,
1524 /** The hash of the audio file being added. */
1525 CAB_HASH_OFFSET = 13,
1526 /** Start of the path of the audio file. */
1527 CAB_PATH_OFFSET = (CAB_HASH_OFFSET + HASH_SIZE),
1528 };
1529
1530 /*
1531 * Store the given data to a single buffer. Doesn't need the audio file selector
1532 * info struct as the server knows it as well.
1533 *
1534 * It's OK to call this with afhi == NULL. In this case, the audio format
1535 * handler info won't be stored in the buffer.
1536 */
1537 static void save_add_callback_buffer(unsigned char *hash, const char *path,
1538 struct afh_info *afhi, const char *slpr, size_t slpr_size,
1539 uint8_t audio_format_num, struct osl_object *obj)
1540 {
1541 size_t path_len = strlen(path) + 1;
1542 size_t afhi_size = sizeof_afhi_buf(afhi);
1543 size_t size = CAB_PATH_OFFSET + path_len + afhi_size
1544 + sizeof_chunk_table(afhi) + slpr_size;
1545 char *buf = para_malloc(size);
1546 uint32_t pos;
1547
1548 assert(size <= ~(uint32_t)0);
1549 write_u8(buf + CAB_AUDIO_FORMAT_ID_OFFSET, audio_format_num);
1550 memcpy(buf + CAB_HASH_OFFSET, hash, HASH_SIZE);
1551 strcpy(buf + CAB_PATH_OFFSET, path);
1552 pos = CAB_PATH_OFFSET + path_len;
1553 write_u32(buf + CAB_AFHI_OFFSET_POS, pos);
1554 save_afhi(afhi, buf + pos);
1555 pos += afhi_size;
1556 write_u32(buf + CAB_CHUNKS_OFFSET_POS, pos);
1557 if (afhi) {
1558 save_chunk_table(afhi, buf + pos);
1559 pos += sizeof_chunk_table(afhi);
1560 }
1561 write_u32(buf + CAB_LPR_OFFSET, pos);
1562 memcpy(buf + pos, slpr, slpr_size);
1563 assert(pos + slpr_size == size);
1564 obj->data = buf;
1565 obj->size = size;
1566 }
1567
1568 /*
1569
1570 Overview of the add command.
1571
1572 Input: What was passed to the callback by the command handler.
1573 ~~~~~~
1574 HS: Hash sister. Whether an audio file with identical hash
1575 already exists in the osl database.
1576
1577 PB: Path brother. Whether a file with the given path exists
1578 in the table.
1579
1580 F: Force flag given. Whether add was called with -f.
1581
1582 output: Action performed by the callback.
1583 ~~~~~~~
1584 AFHI: Whether afhi and chunk table are computed and sent.
1585 ACTION: Table modifications to be done by the callback.
1586
1587 +----+----+---+------+---------------------------------------------------+
1588 | HS | PB | F | AFHI | ACTION
1589 +----+----+---+------+---------------------------------------------------+
1590 | Y | Y | Y | Y | if HS != PB: remove PB. HS: force afhi update,
1591 | | update path, keep afsi
1592 +----+----+---+------+---------------------------------------------------+
1593 | Y | Y | N | N | if HS == PB: do not send callback request at all.
1594 | | otherwise: remove PB, HS: update path, keep afhi,
1595 | | afsi.
1596 +----+----+---+------+---------------------------------------------------+
1597 | Y | N | Y | Y | (rename) force afhi update of HS, update path of
1598 | | HS, keep afsi
1599 +----+----+---+------+---------------------------------------------------+
1600 | Y | N | N | N | (file rename) update path of HS, keep afsi, afhi
1601 +----+----+---+------+---------------------------------------------------+
1602 | N | Y | Y | Y | (file change) update afhi, hash, of PB, keep afsi
1603 | | (force has no effect)
1604 +----+----+---+------+---------------------------------------------------+
1605 | N | Y | N | Y | (file change) update afhi, hash of PB, keep afsi
1606 +----+----+---+------+---------------------------------------------------+
1607 | N | N | Y | Y | (new file) create new entry (force has no effect)
1608 +----+----+---+------+---------------------------------------------------+
1609 | N | N | N | Y | (new file) create new entry
1610 +----+----+---+------+---------------------------------------------------+
1611
1612 Notes:
1613
1614 afhi <=> force or no HS
1615 F => AFHI
1616
1617 */
1618
1619 static int com_add_callback(struct afs_callback_arg *aca)
1620 {
1621 char *buf = aca->query.data, *path;
1622 struct osl_row *pb, *aft_row;
1623 struct osl_row *hs;
1624 struct osl_object objs[NUM_AFT_COLUMNS];
1625 unsigned char *hash;
1626 char asc[2 * HASH_SIZE + 1];
1627 int ret;
1628 char afsi_buf[AFSI_SIZE];
1629 char *slpr = buf + read_u32(buf + CAB_LPR_OFFSET);
1630 struct afs_info default_afsi = {.last_played = 0};
1631 uint16_t afhi_offset, chunks_offset;
1632 const struct lls_command *cmd = SERVER_CMD_CMD_PTR(ADD);
1633 const struct lls_opt_result *r_f, *r_v;
1634
1635 ret = lls_deserialize_parse_result(slpr, cmd, &aca->lpr);
1636 assert(ret >= 0);
1637 r_f = SERVER_CMD_OPT_RESULT(ADD, FORCE, aca->lpr);
1638 r_v = SERVER_CMD_OPT_RESULT(ADD, VERBOSE, aca->lpr);
1639
1640 hash = (unsigned char *)buf + CAB_HASH_OFFSET;
1641 hash_to_asc(hash, asc);
1642 objs[AFTCOL_HASH].data = buf + CAB_HASH_OFFSET;
1643 objs[AFTCOL_HASH].size = HASH_SIZE;
1644
1645 path = buf + CAB_PATH_OFFSET;
1646 objs[AFTCOL_PATH].data = path;
1647 objs[AFTCOL_PATH].size = strlen(path) + 1;
1648
1649 PARA_INFO_LOG("request to add %s\n", path);
1650 ret = find_hash_sister(hash, &hs);
1651 if (ret < 0)
1652 goto out;
1653 ret = find_path_brother(path, &pb);
1654 if (ret < 0)
1655 goto out;
1656 if (hs && pb && hs == pb && !lls_opt_given(r_f)) {
1657 if (lls_opt_given(r_v))
1658 para_printf(&aca->pbout, "ignoring duplicate\n");
1659 ret = 1;
1660 goto out;
1661 }
1662 if (hs && hs != pb) {
1663 struct osl_object obj;
1664 if (pb) { /* hs trumps pb, remove pb */
1665 if (lls_opt_given(r_v))
1666 para_printf(&aca->pbout, "removing %s\n", path);
1667 ret = afs_event(AUDIO_FILE_REMOVE, &aca->pbout, pb);
1668 if (ret < 0)
1669 goto out;
1670 ret = osl(osl_del_row(audio_file_table, pb));
1671 if (ret < 0)
1672 goto out;
1673 pb = NULL;
1674 }
1675 /* file rename, update hs' path */
1676 if (lls_opt_given(r_v)) {
1677 ret = osl(osl_get_object(audio_file_table, hs,
1678 AFTCOL_PATH, &obj));
1679 if (ret < 0)
1680 goto out;
1681 para_printf(&aca->pbout, "renamed from %s\n",
1682 (char *)obj.data);
1683 }
1684 ret = osl(osl_update_object(audio_file_table, hs, AFTCOL_PATH,
1685 &objs[AFTCOL_PATH]));
1686 if (ret < 0)
1687 goto out;
1688 ret = afs_event(AUDIO_FILE_RENAME, &aca->pbout, hs);
1689 if (ret < 0)
1690 goto out;
1691 if (!lls_opt_given(r_f))
1692 goto out;
1693 }
1694 /* no hs or force mode, child must have sent afhi */
1695 afhi_offset = read_u32(buf + CAB_AFHI_OFFSET_POS);
1696 chunks_offset = read_u32(buf + CAB_CHUNKS_OFFSET_POS);
1697
1698 objs[AFTCOL_AFHI].data = buf + afhi_offset;
1699 objs[AFTCOL_AFHI].size = chunks_offset - afhi_offset;
1700 ret = -E_NO_AFHI;
1701 if (!objs[AFTCOL_AFHI].size) /* "impossible" */
1702 goto out;
1703 objs[AFTCOL_CHUNKS].data = buf + chunks_offset;
1704 objs[AFTCOL_CHUNKS].size = aca->query.size - chunks_offset;
1705 if (pb && !hs) { /* update pb's hash */
1706 char old_asc[2 * HASH_SIZE + 1];
1707 unsigned char *old_hash;
1708 ret = get_hash_of_row(pb, &old_hash);
1709 if (ret < 0)
1710 goto out;
1711 hash_to_asc(old_hash, old_asc);
1712 if (lls_opt_given(r_v))
1713 para_printf(&aca->pbout, "file change: %s -> %s\n",
1714 old_asc, asc);
1715 ret = osl(osl_update_object(audio_file_table, pb, AFTCOL_HASH,
1716 &objs[AFTCOL_HASH]));
1717 if (ret < 0)
1718 goto out;
1719 }
1720 if (hs || pb) { /* (hs != NULL and pb != NULL) implies hs == pb */
1721 struct osl_row *row = pb? pb : hs;
1722 /* update afhi and chunk_table */
1723 if (lls_opt_given(r_v))
1724 para_printf(&aca->pbout,
1725 "updating afhi and chunk table\n");
1726 ret = osl(osl_update_object(audio_file_table, row, AFTCOL_AFHI,
1727 &objs[AFTCOL_AFHI]));
1728 if (ret < 0)
1729 goto out;
1730 /* truncate the file to size zero if there is no chunk table */
1731 ret = osl(osl_update_object(audio_file_table, row, AFTCOL_CHUNKS,
1732 &objs[AFTCOL_CHUNKS]));
1733 if (ret < 0)
1734 goto out;
1735 ret = afs_event(AFHI_CHANGE, &aca->pbout, row);
1736 goto out;
1737 }
1738 /* new entry, use default afsi */
1739 if (lls_opt_given(r_v))
1740 para_printf(&aca->pbout, "new file\n");
1741 default_afsi.last_played = time(NULL) - 365 * 24 * 60 * 60;
1742 default_afsi.audio_format_id = read_u8(buf + CAB_AUDIO_FORMAT_ID_OFFSET);
1743
1744 objs[AFTCOL_AFSI].data = &afsi_buf;
1745 objs[AFTCOL_AFSI].size = AFSI_SIZE;
1746 save_afsi(&default_afsi, &objs[AFTCOL_AFSI]);
1747 ret = osl(osl_add_and_get_row(audio_file_table, objs, &aft_row));
1748 if (ret < 0)
1749 goto out;
1750 ret = afs_event(AUDIO_FILE_ADD, &aca->pbout, aft_row);
1751 out:
1752 if (ret < 0)
1753 para_printf(&aca->pbout, "could not add %s\n", path);
1754 lls_free_parse_result(aca->lpr, cmd);
1755 return ret;
1756 }
1757
1758 /* Used by com_add(). */
1759 struct private_add_data {
1760 /* The pointer passed to the original command handler. */
1761 struct command_context *cc;
1762 /* Contains the flags given at the command line. */
1763 struct lls_parse_result *lpr;
1764 /* Serialized lopsub parse result. */
1765 char *slpr;
1766 /* Number of bytes. */
1767 size_t slpr_size;
1768 };
1769
1770 static int path_brother_callback(struct afs_callback_arg *aca)
1771 {
1772 char *path = aca->query.data;
1773 struct osl_row *path_brother;
1774 int ret = find_path_brother(path, &path_brother);
1775 if (ret <= 0)
1776 return ret;
1777 return pass_buffer_as_shm(aca->fd, SBD_OUTPUT, (char *)&path_brother,
1778 sizeof(path_brother));
1779 }
1780
1781 static int hash_sister_callback(struct afs_callback_arg *aca)
1782 {
1783 unsigned char *hash = aca->query.data;
1784 struct osl_row *hash_sister;
1785 int ret = find_hash_sister(hash, &hash_sister);
1786
1787 if (ret <= 0)
1788 return ret;
1789 return pass_buffer_as_shm(aca->fd, SBD_OUTPUT, (char *)&hash_sister,
1790 sizeof(hash_sister));
1791 }
1792
1793 static int get_row_pointer_from_result(struct osl_object *result,
1794 __a_unused uint8_t band, void *private)
1795 {
1796 struct osl_row **row = private;
1797
1798 if (band == SBD_OUTPUT)
1799 *row = *(struct osl_row **)(result->data);
1800 return 1;
1801 }
1802
1803 static int add_one_audio_file(const char *path, void *private_data)
1804 {
1805 int ret, send_ret = 1, fd;
1806 uint8_t format_num = -1;
1807 struct private_add_data *pad = private_data;
1808 struct afh_info afhi, *afhi_ptr = NULL;
1809 struct osl_row *pb = NULL, *hs = NULL; /* path brother/hash sister */
1810 struct osl_object map, obj = {.data = NULL}, query;
1811 unsigned char hash[HASH_SIZE];
1812 bool a_given = SERVER_CMD_OPT_GIVEN(ADD, ALL, pad->lpr);
1813 bool f_given = SERVER_CMD_OPT_GIVEN(ADD, FORCE, pad->lpr);
1814 bool l_given = SERVER_CMD_OPT_GIVEN(ADD, LAZY, pad->lpr);
1815 bool v_given = SERVER_CMD_OPT_GIVEN(ADD, VERBOSE, pad->lpr);
1816
1817 ret = guess_audio_format(path);
1818 if (ret < 0 && !a_given) {
1819 ret = 0;
1820 goto out_free;
1821 }
1822 query.data = (char *)path;
1823 query.size = strlen(path) + 1;
1824 ret = send_callback_request(path_brother_callback, &query,
1825 get_row_pointer_from_result, &pb);
1826 if (ret < 0 && ret != -OSL_ERRNO_TO_PARA_ERROR(E_OSL_RB_KEY_NOT_FOUND))
1827 goto out_free;
1828 ret = 1;
1829 if (pb && l_given) { /* lazy is really cheap */
1830 if (v_given)
1831 send_ret = send_sb_va(&pad->cc->scc, SBD_OUTPUT,
1832 "lazy-ignore: %s\n", path);
1833 goto out_free;
1834 }
1835 /* We still want to add this file. Compute its hash. */
1836 ret = mmap_full_file(path, O_RDONLY, &map.data, &map.size, &fd);
1837 if (ret < 0)
1838 goto out_free;
1839 hash_function(map.data, map.size, hash);
1840
1841 /* Check whether the database contains a file with the same hash. */
1842 query.data = hash;
1843 query.size = HASH_SIZE;
1844 ret = send_callback_request(hash_sister_callback, &query,
1845 get_row_pointer_from_result, &hs);
1846 if (ret < 0)
1847 goto out_unmap;
1848 /* Return success if we already know this file. */
1849 ret = 1;
1850 if (pb && hs && hs == pb && !f_given) {
1851 if (v_given)
1852 send_ret = send_sb_va(&pad->cc->scc, SBD_OUTPUT,
1853 "%s exists, not forcing update\n", path);
1854 goto out_unmap;
1855 }
1856 /*
1857 * We won't recalculate the audio format info and the chunk table if
1858 * there is a hash sister and FORCE was not given.
1859 */
1860 if (!hs || f_given) {
1861 ret = compute_afhi(path, map.data, map.size, fd, &afhi);
1862 if (ret < 0)
1863 goto out_unmap;
1864 format_num = ret;
1865 afhi_ptr = &afhi;
1866 }
1867 munmap(map.data, map.size);
1868 close(fd);
1869 if (v_given) {
1870 send_ret = send_sb_va(&pad->cc->scc, SBD_OUTPUT,
1871 "adding %s\n", path);
1872 if (send_ret < 0)
1873 goto out_free;
1874 }
1875 save_add_callback_buffer(hash, path, afhi_ptr, pad->slpr,
1876 pad->slpr_size, format_num, &obj);
1877 /* Ask afs to consider this entry for adding. */
1878 ret = send_callback_request(com_add_callback, &obj,
1879 afs_cb_result_handler, pad->cc);
1880 goto out_free;
1881
1882 out_unmap:
1883 close(fd);
1884 munmap(map.data, map.size);
1885 out_free:
1886 if (ret < 0 && send_ret >= 0)
1887 send_ret = send_sb_va(&pad->cc->scc, SBD_ERROR_LOG,
1888 "failed to add %s (%s)\n", path, para_strerror(-ret));
1889 free(obj.data);
1890 clear_afhi(afhi_ptr);
1891 /* Stop adding files only on send errors. */
1892 return send_ret;
1893 }
1894
1895 static int com_add(struct command_context *cc, struct lls_parse_result *lpr)
1896 {
1897 int i, ret;
1898 struct private_add_data pad = {.cc = cc, .lpr = lpr};
1899 const struct lls_command *cmd = SERVER_CMD_CMD_PTR(ADD);
1900 unsigned num_inputs;
1901 char *errctx;
1902
1903 ret = lls(lls_check_arg_count(lpr, 1, INT_MAX, &errctx));
1904 if (ret < 0) {
1905 send_errctx(cc, errctx);
1906 return ret;
1907 }
1908 ret = lls_serialize_parse_result(lpr, cmd, &pad.slpr, &pad.slpr_size);
1909 assert(ret >= 0);
1910 num_inputs = lls_num_inputs(lpr);
1911 for (i = 0; i < num_inputs; i++) {
1912 char *path;
1913 ret = verify_path(lls_input(i, lpr), &path);
1914 if (ret < 0) {
1915 ret = send_sb_va(&cc->scc, SBD_ERROR_LOG, "%s: %s\n",
1916 lls_input(i, lpr), para_strerror(-ret));
1917 if (ret < 0)
1918 goto out;
1919 continue;
1920 }
1921 if (ret == 1) /* directory */
1922 ret = for_each_file_in_dir(path, add_one_audio_file,
1923 &pad);
1924 else /* regular file */
1925 ret = add_one_audio_file(path, &pad);
1926 if (ret < 0) {
1927 send_sb_va(&cc->scc, SBD_OUTPUT, "%s: %s\n", path,
1928 para_strerror(-ret));
1929 free(path);
1930 return ret;
1931 }
1932 free(path);
1933 }
1934 ret = 1;
1935 out:
1936 free(pad.slpr);
1937 return ret;
1938 }
1939 EXPORT_SERVER_CMD_HANDLER(add);
1940
1941 /** Flags used by the touch command. */
1942 enum touch_flags {
1943 /** Whether the \p FNM_PATHNAME flag should be passed to fnmatch(). */
1944 TOUCH_FLAG_FNM_PATHNAME = 1,
1945 /** Activates verbose mode. */
1946 TOUCH_FLAG_VERBOSE = 2
1947 };
1948
1949 static int touch_audio_file(__a_unused struct osl_table *table,
1950 struct osl_row *row, const char *name, void *data)
1951 {
1952 struct afs_callback_arg *aca = data;
1953 bool v_given = SERVER_CMD_OPT_GIVEN(TOUCH, VERBOSE, aca->lpr);
1954 const struct lls_opt_result *r_n, *r_l, *r_i, *r_y, *r_a;
1955 int ret;
1956 struct osl_object obj;
1957 struct afs_info old_afsi, new_afsi;
1958 bool no_options;
1959 struct afsi_change_event_data aced;
1960
1961 r_n = SERVER_CMD_OPT_RESULT(TOUCH, NUMPLAYED, aca->lpr);
1962 r_l = SERVER_CMD_OPT_RESULT(TOUCH, LASTPLAYED, aca->lpr);
1963 r_i = SERVER_CMD_OPT_RESULT(TOUCH, IMAGE_ID, aca->lpr);
1964 r_y = SERVER_CMD_OPT_RESULT(TOUCH, LYRICS_ID, aca->lpr);
1965 r_a = SERVER_CMD_OPT_RESULT(TOUCH, AMP, aca->lpr);
1966 no_options = !lls_opt_given(r_n) && !lls_opt_given(r_l) && !lls_opt_given(r_i)
1967 && !lls_opt_given(r_y) && !lls_opt_given(r_a);
1968
1969 ret = get_afsi_object_of_row(row, &obj);
1970 if (ret < 0) {
1971 para_printf(&aca->pbout, "cannot touch %s\n", name);
1972 return ret;
1973 }
1974 ret = load_afsi(&old_afsi, &obj);
1975 if (ret < 0) {
1976 para_printf(&aca->pbout, "cannot touch %s\n", name);
1977 return ret;
1978 }
1979 new_afsi = old_afsi;
1980 if (no_options) {
1981 new_afsi.num_played++;
1982 new_afsi.last_played = time(NULL);
1983 if (v_given)
1984 para_printf(&aca->pbout, "%s: num_played = %u, "
1985 "last_played = now()\n", name,
1986 new_afsi.num_played);
1987 } else {
1988 if (lls_opt_given(r_l))
1989 new_afsi.last_played = lls_uint64_val(0, r_l);
1990 if (lls_opt_given(r_n))
1991 new_afsi.num_played = lls_uint32_val(0, r_n);
1992 if (lls_opt_given(r_i))
1993 new_afsi.image_id = lls_uint32_val(0, r_i);
1994 if (lls_opt_given(r_y))
1995 new_afsi.lyrics_id = lls_uint32_val(0, r_y);
1996 if (lls_opt_given(r_a))
1997 new_afsi.amp = lls_uint32_val(0, r_a);
1998 if (v_given)
1999 para_printf(&aca->pbout, "touching %s\n", name);
2000 }
2001 save_afsi(&new_afsi, &obj); /* in-place update */
2002 aced.aft_row = row;
2003 aced.old_afsi = &old_afsi;
2004 return afs_event(AFSI_CHANGE, &aca->pbout, &aced);
2005 }
2006
2007 static int com_touch_callback(struct afs_callback_arg *aca)
2008 {
2009 const struct lls_command *cmd = SERVER_CMD_CMD_PTR(TOUCH);
2010 bool p_given;
2011 const struct lls_opt_result *r_i, *r_y;
2012 int ret;
2013 struct pattern_match_data pmd = {
2014 .table = audio_file_table,
2015 .loop_col_num = AFTCOL_HASH,
2016 .match_col_num = AFTCOL_PATH,
2017 .data = aca,
2018 .action = touch_audio_file
2019 };
2020
2021 ret = lls_deserialize_parse_result(aca->query.data, cmd, &aca->lpr);
2022 assert(ret >= 0);
2023 pmd.lpr = aca->lpr;
2024
2025 r_i = SERVER_CMD_OPT_RESULT(TOUCH, IMAGE_ID, aca->lpr);
2026 if (lls_opt_given(r_i)) {
2027 uint32_t id = lls_uint32_val(0, r_i);
2028 ret = img_get_name_by_id(id, NULL);
2029 if (ret < 0) {
2030 para_printf(&aca->pbout, "invalid image ID: %u\n", id);
2031 return ret;
2032 }
2033 }
2034 r_y = SERVER_CMD_OPT_RESULT(TOUCH, LYRICS_ID, aca->lpr);
2035 if (lls_opt_given(r_y)) {
2036 uint32_t id = lls_uint32_val(0, r_y);
2037 ret = lyr_get_name_by_id(id, NULL);
2038 if (ret < 0) {
2039 para_printf(&aca->pbout, "invalid lyrics ID: %u\n", id);
2040 return ret;
2041 }
2042 }
2043 p_given = SERVER_CMD_OPT_GIVEN(TOUCH, PATHNAME_MATCH, aca->lpr);
2044 if (p_given)
2045 pmd.fnmatch_flags |= FNM_PATHNAME;
2046 ret = for_each_matching_row(&pmd);
2047 if (ret >= 0 && pmd.num_matches == 0)
2048 ret = -E_NO_MATCH;
2049 lls_free_parse_result(aca->lpr, cmd);
2050 return ret;
2051 }
2052
2053 static int com_touch(struct command_context *cc, struct lls_parse_result *lpr)
2054 {
2055 const struct lls_command *cmd = SERVER_CMD_CMD_PTR(TOUCH);
2056 int ret;
2057 char *errctx;
2058
2059 ret = lls(lls_check_arg_count(lpr, 1, INT_MAX, &errctx));
2060 if (ret < 0) {
2061 send_errctx(cc, errctx);
2062 return ret;
2063 }
2064 return send_lls_callback_request(com_touch_callback, cmd, lpr, cc);
2065 }
2066 EXPORT_SERVER_CMD_HANDLER(touch);
2067
2068 static int remove_audio_file(__a_unused struct osl_table *table,
2069 struct osl_row *row, const char *name, void *data)
2070 {
2071 struct afs_callback_arg *aca = data;
2072 bool v_given = SERVER_CMD_OPT_GIVEN(RM, VERBOSE, aca->lpr);
2073 int ret;
2074
2075 if (v_given)
2076 para_printf(&aca->pbout, "removing %s\n", name);
2077 ret = afs_event(AUDIO_FILE_REMOVE, &aca->pbout, row);
2078 if (ret < 0)
2079 return ret;
2080 ret = osl(osl_del_row(audio_file_table, row));
2081 if (ret < 0)
2082 para_printf(&aca->pbout, "cannot remove %s\n", name);
2083 return ret;
2084 }
2085
2086 static int com_rm_callback(struct afs_callback_arg *aca)
2087 {
2088 const struct lls_command *cmd = SERVER_CMD_CMD_PTR(RM);
2089 int ret;
2090 struct pattern_match_data pmd = {
2091 .table = audio_file_table,
2092 .loop_col_num = AFTCOL_HASH,
2093 .match_col_num = AFTCOL_PATH,
2094 .data = aca,
2095 .action = remove_audio_file
2096 };
2097 bool v_given, p_given, f_given;
2098
2099 ret = lls_deserialize_parse_result(aca->query.data, cmd, &aca->lpr);
2100 assert(ret >= 0);
2101 pmd.lpr = aca->lpr;
2102 v_given = SERVER_CMD_OPT_GIVEN(RM, VERBOSE, aca->lpr);
2103 p_given = SERVER_CMD_OPT_GIVEN(RM, PATHNAME_MATCH, aca->lpr);
2104 f_given = SERVER_CMD_OPT_GIVEN(RM, FORCE, aca->lpr);
2105
2106 if (p_given)
2107 pmd.fnmatch_flags |= FNM_PATHNAME;
2108 ret = for_each_matching_row(&pmd);
2109 if (ret < 0)
2110 goto out;
2111 if (pmd.num_matches == 0) {
2112 if (!f_given)
2113 ret = -E_NO_MATCH;
2114 } else if (v_given)
2115 para_printf(&aca->pbout, "removed %u file(s)\n",
2116 pmd.num_matches);
2117 out:
2118 lls_free_parse_result(aca->lpr, cmd);
2119 return ret;
2120 }
2121
2122 /* TODO options: -r (recursive) */
2123 static int com_rm(struct command_context *cc, struct lls_parse_result *lpr)
2124 {
2125 const struct lls_command *cmd = SERVER_CMD_CMD_PTR(RM);
2126 char *errctx;
2127 int ret;
2128
2129 ret = lls(lls_check_arg_count(lpr, 1, INT_MAX, &errctx));
2130 if (ret < 0) {
2131 send_errctx(cc, errctx);
2132 return ret;
2133 }
2134 return send_lls_callback_request(com_rm_callback, cmd, lpr, cc);
2135 }
2136 EXPORT_SERVER_CMD_HANDLER(rm);
2137
2138 /** Data passed to the action handler of com_cpsi(). */
2139 struct cpsi_action_data {
2140 /** Values are copied from here. */
2141 struct afs_info source_afsi;
2142 /** What was passed to com_cpsi_callback(). */
2143 struct afs_callback_arg *aca;
2144 bool copy_all;
2145 };
2146
2147 static int copy_selector_info(__a_unused struct osl_table *table,
2148 struct osl_row *row, const char *name, void *data)
2149 {
2150 struct cpsi_action_data *cad = data;
2151 struct osl_object target_afsi_obj;
2152 int ret;
2153 struct afs_info old_afsi, target_afsi;
2154 struct afsi_change_event_data aced;
2155 bool a_given, y_given, i_given, l_given, n_given, v_given;
2156
2157 a_given = SERVER_CMD_OPT_GIVEN(CPSI, ATTRIBUTE_BITMAP, cad->aca->lpr);
2158 y_given = SERVER_CMD_OPT_GIVEN(CPSI, LYRICS_ID, cad->aca->lpr);
2159 i_given = SERVER_CMD_OPT_GIVEN(CPSI, IMAGE_ID, cad->aca->lpr);
2160 l_given = SERVER_CMD_OPT_GIVEN(CPSI, LASTPLAYED, cad->aca->lpr);
2161 n_given = SERVER_CMD_OPT_GIVEN(CPSI, NUMPLAYED, cad->aca->lpr);
2162 v_given = SERVER_CMD_OPT_GIVEN(CPSI, VERBOSE, cad->aca->lpr);
2163
2164 ret = get_afsi_object_of_row(row, &target_afsi_obj);
2165 if (ret < 0)
2166 return ret;
2167 ret = load_afsi(&target_afsi, &target_afsi_obj);
2168 if (ret < 0)
2169 return ret;
2170 old_afsi = target_afsi;
2171 if (cad->copy_all || y_given)
2172 target_afsi.lyrics_id = cad->source_afsi.lyrics_id;
2173 if (cad->copy_all || i_given)
2174 target_afsi.image_id = cad->source_afsi.image_id;
2175 if (cad->copy_all || l_given)
2176 target_afsi.last_played = cad->source_afsi.last_played;
2177 if (cad->copy_all || n_given)
2178 target_afsi.num_played = cad->source_afsi.num_played;
2179 if (cad->copy_all || a_given)
2180 target_afsi.attributes = cad->source_afsi.attributes;
2181 save_afsi(&target_afsi, &target_afsi_obj); /* in-place update */
2182 if (v_given)
2183 para_printf(&cad->aca->pbout, "copied afsi to %s\n", name);
2184 aced.aft_row = row;
2185 aced.old_afsi = &old_afsi;
2186 return afs_event(AFSI_CHANGE, &cad->aca->pbout, &aced);
2187 }
2188
2189 static int com_cpsi_callback(struct afs_callback_arg *aca)
2190 {
2191 const struct lls_command *cmd = SERVER_CMD_CMD_PTR(CPSI);
2192 bool a_given, y_given, i_given, l_given, n_given, v_given;
2193 struct cpsi_action_data cad = {.aca = aca};
2194 int ret;
2195 struct pattern_match_data pmd = {
2196 .table = audio_file_table,
2197 .loop_col_num = AFTCOL_HASH,
2198 .match_col_num = AFTCOL_PATH,
2199 .input_skip = 1, /* skip first argument (source file) */
2200 .data = &cad,
2201 .action = copy_selector_info
2202 };
2203
2204 ret = lls_deserialize_parse_result(aca->query.data, cmd, &aca->lpr);
2205 assert(ret >= 0);
2206 pmd.lpr = aca->lpr;
2207
2208 a_given = SERVER_CMD_OPT_GIVEN(CPSI, ATTRIBUTE_BITMAP, aca->lpr);
2209 y_given = SERVER_CMD_OPT_GIVEN(CPSI, LYRICS_ID, aca->lpr);
2210 i_given = SERVER_CMD_OPT_GIVEN(CPSI, IMAGE_ID, aca->lpr);
2211 l_given = SERVER_CMD_OPT_GIVEN(CPSI, LASTPLAYED, aca->lpr);
2212 n_given = SERVER_CMD_OPT_GIVEN(CPSI, NUMPLAYED, aca->lpr);
2213 v_given = SERVER_CMD_OPT_GIVEN(CPSI, VERBOSE, aca->lpr);
2214 cad.copy_all = !a_given && !y_given && !i_given && !l_given && !n_given;
2215
2216 ret = get_afsi_of_path(lls_input(0, aca->lpr), &cad.source_afsi);
2217 if (ret < 0)
2218 goto out;
2219 ret = for_each_matching_row(&pmd);
2220 if (ret < 0)
2221 goto out;
2222 if (pmd.num_matches > 0) {
2223 if (v_given)
2224 para_printf(&aca->pbout, "updated afsi of %u file(s)\n",
2225 pmd.num_matches);
2226 } else
2227 ret = -E_NO_MATCH;
2228 out:
2229 lls_free_parse_result(aca->lpr, cmd);
2230 return ret;
2231 }
2232
2233 static int com_cpsi(struct command_context *cc, struct lls_parse_result *lpr)
2234 {
2235 const struct lls_command *cmd = SERVER_CMD_CMD_PTR(CPSI);
2236 char *errctx;
2237 int ret = lls(lls_check_arg_count(lpr, 2, INT_MAX, &errctx));
2238 if (ret < 0) {
2239 send_errctx(cc, errctx);
2240 return ret;
2241 }
2242 return send_lls_callback_request(com_cpsi_callback, cmd, lpr, cc);
2243 }
2244 EXPORT_SERVER_CMD_HANDLER(cpsi);
2245
2246 struct change_atts_data {
2247 uint64_t add_mask, del_mask;
2248 struct afs_callback_arg *aca;
2249 };
2250
2251 static int change_atts(__a_unused struct osl_table *table,
2252 struct osl_row *row, __a_unused const char *name, void *data)
2253 {
2254 int ret;
2255 struct osl_object obj;
2256 struct afs_info old_afsi, new_afsi;
2257 struct afsi_change_event_data aced = {
2258 .aft_row = row,
2259 .old_afsi = &old_afsi
2260 };
2261 struct change_atts_data *cad = data;
2262
2263 ret = get_afsi_object_of_row(row, &obj);
2264 if (ret < 0)
2265 return ret;
2266 ret = load_afsi(&old_afsi, &obj);
2267 if (ret < 0)
2268 return ret;
2269 new_afsi = old_afsi;
2270 new_afsi.attributes |= cad->add_mask;
2271 new_afsi.attributes &= ~cad->del_mask;
2272 save_afsi(&new_afsi, &obj); /* in-place update */
2273 return afs_event(AFSI_CHANGE, &cad->aca->pbout, &aced);
2274 }
2275
2276 static int com_setatt_callback(struct afs_callback_arg *aca)
2277 {
2278 const struct lls_command *cmd = SERVER_CMD_CMD_PTR(SETATT);
2279 int i, ret;
2280 struct change_atts_data cad = {.aca = aca};
2281 struct pattern_match_data pmd = {
2282 .table = audio_file_table,
2283 .loop_col_num = AFTCOL_HASH,
2284 .match_col_num = AFTCOL_PATH,
2285 .pm_flags = PM_SKIP_EMPTY_NAME,
2286 .data = &cad,
2287 .action = change_atts
2288 };
2289 unsigned num_inputs;
2290
2291 ret = lls_deserialize_parse_result(aca->query.data, cmd, &aca->lpr);
2292 assert(ret >= 0);
2293 pmd.lpr = aca->lpr;
2294
2295 num_inputs = lls_num_inputs(aca->lpr);
2296 for (i = 0; i < num_inputs; i++) {
2297 unsigned char bitnum;
2298 uint64_t one = 1;
2299 const char *arg = lls_input(i, aca->lpr);
2300 char c, *p;
2301 size_t len = strlen(arg);
2302
2303 ret = -E_ATTR_SYNTAX;
2304 if (len == 0)
2305 goto out;
2306 c = arg[len - 1];
2307 if (c != '+' && c != '-') {
2308 if (cad.add_mask == 0 && cad.del_mask == 0)
2309 goto out; /* no attribute modifier given */
2310 goto set_atts;
2311 }
2312 p = para_malloc(len);
2313 memcpy(p, arg, len - 1);
2314 p[len - 1] = '\0';
2315 ret = get_attribute_bitnum_by_name(p, &bitnum);
2316 free(p);
2317 if (ret < 0) {
2318 para_printf(&aca->pbout, "invalid argument: %s\n", arg);
2319 goto out;
2320 }
2321 if (c == '+')
2322 cad.add_mask |= (one << bitnum);
2323 else
2324 cad.del_mask |= (one << bitnum);
2325 }
2326 /* no pattern given */
2327 ret = -E_ATTR_SYNTAX;
2328 goto out;
2329 set_atts:
2330 pmd.input_skip = i;
2331 ret = for_each_matching_row(&pmd);
2332 if (ret >= 0 && pmd.num_matches == 0)
2333 ret = -E_NO_MATCH;
2334 out:
2335 lls_free_parse_result(aca->lpr, cmd);
2336 return ret;
2337 }
2338
2339 static int com_setatt(struct command_context *cc, struct lls_parse_result *lpr)
2340 {
2341 const struct lls_command *cmd = SERVER_CMD_CMD_PTR(SETATT);
2342 char *errctx;
2343 int ret = lls(lls_check_arg_count(lpr, 2, INT_MAX, &errctx));
2344
2345 if (ret < 0) {
2346 send_errctx(cc, errctx);
2347 return ret;
2348 }
2349 return send_lls_callback_request(com_setatt_callback, cmd, lpr, cc);
2350 }
2351 EXPORT_SERVER_CMD_HANDLER(setatt);
2352
2353 static int afs_stat_callback(struct afs_callback_arg *aca)
2354 {
2355 int *parser_friendly = aca->query.data;
2356 char *buf = *parser_friendly?
2357 parser_friendly_status_items : status_items;
2358
2359 if (!buf)
2360 return 0;
2361 return pass_buffer_as_shm(aca->fd, SBD_OUTPUT, buf, strlen(buf));
2362 }
2363
2364 /**
2365 * Get the current afs status items from the afs process and send it.
2366 *
2367 * \param cc The command context, used e.g. for data encryption.
2368 * \param parser_friendly Whether parser-friendly output format should be used.
2369 *
2370 * As the contents of the afs status items change in time and the command
2371 * handler only has a COW version created at fork time, it can not send
2372 * up-to-date afs status items directly. Therefore the usual callback mechanism
2373 * is used to pass the status items from the afs process to the command handler
2374 * via a shared memory area and a pipe.
2375 *
2376 * \return The return value of the underlying call to \ref send_callback_request().
2377 */
2378 int send_afs_status(struct command_context *cc, int parser_friendly)
2379 {
2380 struct osl_object query = {.data = &parser_friendly,
2381 .size = sizeof(parser_friendly)};
2382
2383 return send_callback_request(afs_stat_callback, &query,
2384 afs_cb_result_handler, cc);
2385 }
2386
2387 /* returns success on non-fatal errors to keep the loop going */
2388 static int check_audio_file(struct osl_row *row, void *data)
2389 {
2390 char *path;
2391 struct para_buffer *pb = data;
2392 struct stat statbuf;
2393 int ret = get_audio_file_path_of_row(row, &path);
2394 struct afs_info afsi;
2395 char *blob_name;
2396
2397 if (ret < 0) {
2398 para_printf(pb, "%s\n", para_strerror(-ret));
2399 return ret;
2400 }
2401 if (stat(path, &statbuf) < 0)
2402 para_printf(pb, "%s: stat error (%s)\n", path, strerror(errno));
2403 else if (!S_ISREG(statbuf.st_mode))
2404 para_printf(pb, "%s: not a regular file\n", path);
2405 ret = get_afsi_of_row(row, &afsi);
2406 if (ret < 0) {
2407 para_printf(pb, "%s: %s\n", path, para_strerror(-ret));
2408 return 1;
2409 }
2410 ret = lyr_get_name_by_id(afsi.lyrics_id, &blob_name);
2411 if (ret < 0)
2412 para_printf(pb, "%s lyrics id %u: %s\n", path, afsi.lyrics_id,
2413 para_strerror(-ret));
2414 ret = img_get_name_by_id(afsi.image_id, &blob_name);
2415 if (ret < 0)
2416 para_printf(pb, "%s image id %u: %s\n", path, afsi.image_id,
2417 para_strerror(-ret));
2418 return 0;
2419 }
2420
2421 /**
2422 * Check the audio file table for inconsistencies.
2423 *
2424 * \param aca Only ->pbout is used for diagnostics.
2425 *
2426 * \return Standard. Inconsistencies are reported but not regarded as an error.
2427 */
2428 int aft_check_callback(struct afs_callback_arg *aca)
2429 {
2430 para_printf(&aca->pbout, "checking audio file table...\n");
2431 return audio_file_loop(&aca->pbout, check_audio_file);
2432 }
2433
2434 struct aft_check_atts_data {
2435 uint64_t att_mask;
2436 struct para_buffer *pb;
2437 };
2438
2439 static int check_atts_of_audio_file(struct osl_row *row, void *data)
2440 {
2441 struct aft_check_atts_data *acad = data;
2442 int ret;
2443 struct afs_info afsi;
2444 char *path;
2445 uint64_t bad_bits;
2446
2447 ret = get_afsi_of_row(row, &afsi);
2448 if (ret < 0) {
2449 para_printf(acad->pb, "cannot get afsi\n");
2450 return ret;
2451 }
2452 bad_bits = afsi.attributes & ~acad->att_mask;
2453 if (bad_bits == 0) /* OK */
2454 return 0;
2455 ret = get_audio_file_path_of_row(row, &path);
2456 if (ret < 0) {
2457 para_printf(acad->pb, "cannot get path\n");
2458 return ret;
2459 }
2460 para_printf(acad->pb, "invalid attribute bits (%" PRIu64 "): %s\n",
2461 bad_bits, path);
2462 /* return success to keep looping */
2463 return 1;
2464 }
2465
2466 /**
2467 * Iterate over all audio files and check the attribute bit mask.
2468 *
2469 * \param att_mask The mask of all valid attributes.
2470 * \param pb Used for reporting inconsistencies.
2471 *
2472 * This reads the attribute bit mask of each audio file from the afs info
2473 * structure stored in the audio file table and verifies that all set bits are
2474 * also turned on in \a att_mask, i.e., correspond to an attribute of the
2475 * attribute table. Audio files for which this is not the case are reported via
2476 * \a pb.
2477 *
2478 * \return Standard. Inconsistencies are not regarded as errors.
2479 *
2480 * \sa \ref attribute_check_callback().
2481 */
2482 int aft_check_attributes(uint64_t att_mask, struct para_buffer *pb)
2483 {
2484 struct aft_check_atts_data acad = {.att_mask = att_mask, .pb = pb};
2485
2486 para_printf(pb, "checking attributes, mask: %" PRIx64 "\n", att_mask);
2487 return audio_file_loop(&acad, check_atts_of_audio_file);
2488 }
2489
2490 /*
2491 * This sets audio_file_table to NULL, but leaves current_aft_row unmodified,
2492 * though stale (pointing to unmapped memory). If the table is being closed
2493 * because we received SIGHUP, the table will be reopened after the config file
2494 * has been reloaded. We remember the hash of the current audio file here so
2495 * that aft_open() can initialize current_aft_row by looking up the saved hash.
2496 */
2497 static void aft_close(void)
2498 {
2499 int ret;
2500 unsigned char *p;
2501
2502 if (current_aft_row) {
2503 ret = get_hash_of_row(current_aft_row, &p);
2504 if (ret < 0) {
2505 PARA_WARNING_LOG("hash lookup failure\n");
2506 current_aft_row = NULL;
2507 } else
2508 memcpy(current_hash, p, HASH_SIZE);
2509 }
2510 osl_close_table(audio_file_table, OSL_MARK_CLEAN);
2511 audio_file_table = NULL;
2512 }
2513
2514 static int aft_open(const char *dir)
2515 {
2516 int ret;
2517
2518 audio_file_table_desc.dir = dir;
2519 ret = osl(osl_open_table(&audio_file_table_desc, &audio_file_table));
2520 if (ret >= 0) {
2521 unsigned num;
2522 osl_get_num_rows(audio_file_table, &num);
2523 PARA_INFO_LOG("audio file table contains %u files\n", num);
2524 if (!current_aft_row) {
2525 PARA_DEBUG_LOG("no current aft row\n");
2526 return 1;
2527 }
2528 /* SIGHUP case, update current_aft_row */
2529 ret = aft_get_row_of_hash(current_hash, &current_aft_row);
2530 if (ret < 0) { /* not fatal */
2531 PARA_WARNING_LOG("current hash lookup failure: %s\n",
2532 para_strerror(-ret));
2533 current_aft_row = NULL;
2534 return 1;
2535 }
2536 PARA_NOTICE_LOG("current audio file hash lookup: success\n");
2537 return 1;
2538 }
2539 audio_file_table = NULL;
2540 if (ret == -OSL_ERRNO_TO_PARA_ERROR(E_OSL_NOENT)) {
2541 PARA_WARNING_LOG("no audio file table\n");
2542 return 1;
2543 }
2544 PARA_NOTICE_LOG("failed to open audio file table\n");
2545 return ret;
2546 }
2547
2548 static int aft_create(const char *dir)
2549 {
2550 audio_file_table_desc.dir = dir;
2551 return osl(osl_create_table(&audio_file_table_desc));
2552 }
2553
2554 static int clear_attribute(struct osl_row *row, void *data)
2555 {
2556 struct rmatt_event_data *red = data;
2557 struct afs_info afsi;
2558 struct osl_object obj;
2559 int ret = get_afsi_object_of_row(row, &obj);
2560 uint64_t mask = ~(1ULL << red->bitnum);
2561
2562 if (ret < 0)
2563 return ret;
2564 ret = load_afsi(&afsi, &obj);
2565 if (ret < 0)
2566 return ret;
2567 afsi.attributes &= mask;
2568 save_afsi(&afsi, &obj);
2569 return 1;
2570 }
2571
2572 static int aft_event_handler(enum afs_events event, struct para_buffer *pb,
2573 void *data)
2574 {
2575 int ret;
2576
2577 switch (event) {
2578 case ATTRIBUTE_REMOVE: {
2579 const struct rmatt_event_data *red = data;
2580 para_printf(pb, "clearing attribute %s (bit %u) from all "
2581 "entries in the audio file table\n", red->name,
2582 red->bitnum);
2583 return audio_file_loop(data, clear_attribute);
2584 } case AFSI_CHANGE: {
2585 struct afsi_change_event_data *aced = data;
2586 uint64_t old_last_played = status_item_ls_data.afsi.last_played;
2587 if (aced->aft_row != current_aft_row)
2588 return 0;
2589 ret = get_afsi_of_row(aced->aft_row, &status_item_ls_data.afsi);
2590 if (ret < 0)
2591 return ret;
2592 status_item_ls_data.afsi.last_played = old_last_played;
2593 make_status_items();
2594 return 1;
2595 } case AUDIO_FILE_RENAME: {
2596 char *path;
2597 if (data != current_aft_row)
2598 return 0;
2599 ret = get_audio_file_path_of_row(current_aft_row, &path);
2600 if (ret < 0)
2601 return ret;
2602 free(status_item_ls_data.path);
2603 status_item_ls_data.path = para_strdup(path);
2604 make_status_items();
2605 return 1;
2606 } case AFHI_CHANGE: {
2607 if (data != current_aft_row)
2608 return 0;
2609 ret = get_afhi_of_row(data, &status_item_ls_data.afhi);
2610 if (ret < 0)
2611 return ret;
2612 make_status_items();
2613 return 1;
2614 } case AUDIO_FILE_REMOVE: {
2615 if (data == current_aft_row)
2616 current_aft_row = NULL;
2617 return 0;
2618 }
2619 case BLOB_RENAME:
2620 case BLOB_REMOVE:
2621 case BLOB_ADD: {
2622 /*
2623 * These events are rare. We don't bother to check whether the
2624 * current status items are affected and simply recreate them
2625 * whenever an audio file is open.
2626 */
2627 if (!current_aft_row)
2628 return 0;
2629 ret = get_afhi_of_row(current_aft_row,
2630 &status_item_ls_data.afhi);
2631 if (ret < 0)
2632 return ret;
2633 make_status_items();
2634 return 0;
2635 } default:
2636 return 0;
2637 }
2638 }
2639
2640 /**
2641 * Initialize the audio file table.
2642 *
2643 * \param t Pointer to the structure to be initialized.
2644 */
2645 void aft_init(struct afs_table *t)
2646 {
2647 t->open = aft_open;
2648 t->close = aft_close;
2649 t->create = aft_create;
2650 t->event_handler = aft_event_handler;
2651 }