2 * This file is part of DisOrder
3 * Copyright (C) 2005-2008 Richard Kettlewell
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 /** @file lib/trackdb.c
21 * @brief Track database
23 * This file is getting in desparate need of splitting up...
32 #include <sys/socket.h>
39 #include <sys/resource.h>
41 #include <arpa/inet.h>
54 #include "configuration.h"
59 #include "trackname.h"
60 #include "trackdb-int.h"
69 #define RESCAN "disorder-rescan"
70 #define DEADLOCK "disorder-deadlock"
72 static const char *getpart(const char *track,
77 static char **trackdb_new_tid(int *ntracksp,
80 static int trackdb_expire_noticed_tid(time_t earliest, DB_TXN *tid);
81 static char *normalize_tag(const char *s, size_t ns);
83 const struct cache_type cache_files_type = { 86400 };
84 unsigned long cache_files_hits, cache_files_misses;
86 /** @brief Set by trackdb_open() */
87 int trackdb_existing_database;
89 /* setup and teardown ********************************************************/
91 static const char *home; /* home had better not change */
92 DB_ENV *trackdb_env; /* db environment */
94 /** @brief The tracks database
95 * - Keys are UTF-8(NFC(unicode(path name)))
96 * - Values are encoded key-value pairs
97 * - Data is reconstructable data about tracks that currently exist
101 /** @brief The preferences database
103 * - Keys are UTF-8(NFC(unicode(path name)))
104 * - Values are encoded key-value pairs
105 * - Data is user data about tracks (that might not exist any more)
106 * and cannot be reconstructed
110 /** @brief The search database
112 * - Keys are UTF-8(NFKC(casefold(search term)))
113 * - Values are UTF-8(NFC(unicode(path name)))
114 * - There can be more than one value per key
115 * - Presence of key,value means that path matches the search terms
116 * - Only tracks fond in @ref trackdb_tracksdb are represented here
117 * - This database can be reconstructed, it contains no user data
119 DB *trackdb_searchdb;
121 /** @brief The tags database
123 * - Keys are UTF-8(NFKC(casefold(tag)))
124 * - Values are UTF-8(NFC(unicode(path name)))
125 * - There can be more than one value per key
126 * - Presence of key,value means that path matches the tag
127 * - This is always in sync with the tags preference
128 * - This database can be reconstructed, it contains no user data
130 DB *trackdb_tagsdb; /* the tags database */
132 /** @brief The global preferences database
133 * - Keys are UTF-8(NFC(preference))
134 * - Values are global preference values
135 * - Data is user data and cannot be reconstructed
137 DB *trackdb_globaldb; /* global preferences */
139 /** @brief The noticed database
140 * - Keys are 64-bit big-endian timestamps
141 * - Values are UTF-8(NFC(unicode(path name)))
142 * - There can be more than one value per key
143 * - Presence of key,value means that path was added at the given time
144 * - Data cannot be reconstructed (but isn't THAT important)
146 DB *trackdb_noticeddb; /* when track noticed */
148 /** @brief The user database
149 * - Keys are usernames
150 * - Values are encoded key-value pairs
151 * - Data is user data and cannot be reconstructed
155 static pid_t db_deadlock_pid = -1; /* deadlock manager PID */
156 static pid_t rescan_pid = -1; /* rescanner PID */
157 static int initialized, opened; /* state */
159 /* comparison function for keys */
160 static int compare(DB attribute((unused)) *db_,
161 const DBT *a, const DBT *b) {
162 return compare_path_raw(a->data, a->size, b->data, b->size);
165 /** @brief Test whether the track database can be read
166 * @return 1 if it can, 0 if it cannot
168 int trackdb_readable(void) {
171 byte_xasprintf(&usersdb, "%s/users.db", config->home);
172 return access(usersdb, R_OK) == 0;
175 /** @brief Open database environment
176 * @param flags Flags word
178 * Flags should be one of:
179 * - @ref TRACKDB_NO_RECOVER
180 * - @ref TRACKDB_NORMAL_RECOVER
181 * - @ref TRACKDB_FATAL_RECOVER
182 * - @ref TRACKDB_MAY_CREATE
184 void trackdb_init(int flags) {
186 const int recover = flags & TRACKDB_RECOVER_MASK;
187 static int recover_type[] = { 0, DB_RECOVER, DB_RECOVER_FATAL };
190 assert(initialized == 0);
193 if(strcmp(home, config->home))
194 fatal(0, "cannot change db home without server restart");
198 if(flags & TRACKDB_MAY_CREATE) {
204 /* Remove world/group permissions on any regular files already in the
205 * database directory. Actually we don't care about all of them but it's
206 * easier to just do the lot. This can be revisited if it's a serious
207 * practical inconvenience for anyone.
209 * The socket, not being a regular file, is excepted.
211 if(!(dp = opendir(config->home)))
212 fatal(errno, "error reading %s", config->home);
213 while((de = readdir(dp))) {
214 byte_xasprintf(&p, "%s/%s", config->home, de->d_name);
215 if(lstat(p, &st) == 0
216 && S_ISREG(st.st_mode)
217 && (st.st_mode & 077)) {
218 if(chmod(p, st.st_mode & 07700) < 0)
219 fatal(errno, "cannot chmod %s", p);
226 /* create environment */
227 if((err = db_env_create(&trackdb_env, 0))) fatal(0, "db_env_create: %s",
229 if((err = trackdb_env->set_alloc(trackdb_env,
230 xmalloc_noptr, xrealloc_noptr, xfree)))
231 fatal(0, "trackdb_env->set_alloc: %s", db_strerror(err));
232 if((err = trackdb_env->set_lk_max_locks(trackdb_env, 10000)))
233 fatal(0, "trackdb_env->set_lk_max_locks: %s", db_strerror(err));
234 if((err = trackdb_env->set_lk_max_objects(trackdb_env, 10000)))
235 fatal(0, "trackdb_env->set_lk_max_objects: %s", db_strerror(err));
236 if((err = trackdb_env->open(trackdb_env, config->home,
242 |recover_type[recover],
244 fatal(0, "trackdb_env->open %s: %s", config->home, db_strerror(err));
245 trackdb_env->set_errpfx(trackdb_env, "DB");
246 trackdb_env->set_errfile(trackdb_env, stderr);
247 trackdb_env->set_verbose(trackdb_env, DB_VERB_DEADLOCK, 1);
248 trackdb_env->set_verbose(trackdb_env, DB_VERB_RECOVERY, 1);
249 trackdb_env->set_verbose(trackdb_env, DB_VERB_REPLICATION, 1);
250 D(("initialized database environment"));
253 /* called when deadlock manager terminates */
254 static int reap_db_deadlock(ev_source attribute((unused)) *ev,
255 pid_t attribute((unused)) pid,
257 const struct rusage attribute((unused)) *rusage,
258 void attribute((unused)) *u) {
259 db_deadlock_pid = -1;
261 fatal(0, "deadlock manager unexpectedly terminated: %s",
264 D(("deadlock manager terminated: %s", wstat(status)));
268 static pid_t subprogram(ev_source *ev, int outputfd, const char *prog,
272 const char *args[1024], **argp, *a;
276 *argp++ = "--config";
277 *argp++ = configfile;
278 *argp++ = debugging ? "--debug" : "--no-debug";
279 *argp++ = log_default == &log_syslog ? "--syslog" : "--no-syslog";
281 while((a = va_arg(ap, const char *)))
285 /* If we're in the background then trap subprocess stdout/stderr */
286 if(!(pid = xfork())) {
289 ev_signal_atfork(ev);
290 signal(SIGPIPE, SIG_DFL);
295 /* ensure we don't leak privilege anywhere */
296 if(setuid(geteuid()) < 0)
297 fatal(errno, "error calling setuid");
298 /* If we were negatively niced, undo it. We don't bother checking for
299 * error, it's not that important. */
300 setpriority(PRIO_PROCESS, 0, 0);
301 execvp(prog, (char **)args);
302 fatal(errno, "error invoking %s", prog);
307 /* start deadlock manager */
308 void trackdb_master(ev_source *ev) {
309 assert(db_deadlock_pid == -1);
310 db_deadlock_pid = subprogram(ev, -1, DEADLOCK, (char *)0);
311 ev_child(ev, db_deadlock_pid, 0, reap_db_deadlock, 0);
312 D(("started deadlock manager"));
315 /* close environment */
316 void trackdb_deinit(void) {
320 assert(initialized == 1);
323 /* close the environment */
324 if((err = trackdb_env->close(trackdb_env, 0)))
325 fatal(0, "trackdb_env->close: %s", db_strerror(err));
327 if(rescan_pid != -1) {
328 /* shut down the rescanner */
329 if(kill(rescan_pid, SIGTERM) < 0)
330 fatal(errno, "error killing rescanner");
331 /* wait for the rescanner to finish */
332 while(waitpid(rescan_pid, &err, 0) == -1 && errno == EINTR)
336 /* TODO kill any stats subprocesses */
338 /* finally terminate the deadlock manager */
339 if(db_deadlock_pid != -1 && kill(db_deadlock_pid, SIGTERM) < 0)
340 fatal(errno, "error killing deadlock manager");
341 db_deadlock_pid = -1;
343 D(("deinitialized database environment"));
346 /* open a specific database */
347 static DB *open_db(const char *path,
355 D(("open %s", path));
356 path = config_get_file(path);
357 if((err = db_create(&db, trackdb_env, 0)))
358 fatal(0, "db_create %s: %s", path, db_strerror(err));
360 if((err = db->set_flags(db, dbflags)))
361 fatal(0, "db->set_flags %s: %s", path, db_strerror(err));
362 if(dbtype == DB_BTREE)
363 if((err = db->set_bt_compare(db, compare)))
364 fatal(0, "db->set_bt_compare %s: %s", path, db_strerror(err));
365 if((err = db->open(db, 0, path, 0, dbtype,
366 openflags | DB_AUTO_COMMIT, mode))) {
367 if((openflags & DB_CREATE) || errno != ENOENT)
368 fatal(0, "db->open %s: %s", path, db_strerror(err));
375 /** @brief Open track databases
376 * @param flags Flags flags word
378 * @p flags should have one of:
379 * - @p TRACKDB_NO_UPGRADE, if no upgrade should be attempted
380 * - @p TRACKDB_CAN_UPGRADE, if an upgrade may be attempted
381 * - @p TRACKDB_OPEN_FOR_UPGRADE, if this is disorder-dbupgrade
383 * - @p TRACKDB_READ_ONLY, read only access
385 void trackdb_open(int flags) {
388 uint32_t dbflags = flags & TRACKDB_READ_ONLY ? DB_RDONLY : DB_CREATE;
393 /* check the database version first */
394 trackdb_globaldb = open_db("global.db", 0, DB_HASH, DB_RDONLY, 0666);
395 if(trackdb_globaldb) {
396 /* This is an existing database */
400 s = trackdb_get_global("_dbversion");
401 /* Close the database again, we'll open it property below */
402 if((err = trackdb_globaldb->close(trackdb_globaldb, 0)))
403 fatal(0, "error closing global.db: %s", db_strerror(err));
404 trackdb_globaldb = 0;
405 /* Convert version string to an integer */
406 oldversion = s ? atol(s) : 1;
407 if(oldversion > config->dbversion) {
408 /* Database is from the future; we never allow this. */
409 fatal(0, "this version of DisOrder is too old for database version %ld",
412 if(oldversion < config->dbversion) {
413 /* Database version is out of date */
414 switch(flags & TRACKDB_UPGRADE_MASK) {
415 case TRACKDB_NO_UPGRADE:
416 /* This database needs upgrading but this is not permitted */
417 fatal(0, "database needs upgrading from %ld to %ld",
418 oldversion, config->dbversion);
419 case TRACKDB_CAN_UPGRADE:
420 /* This database needs upgrading */
421 info("invoking disorder-dbupgrade to upgrade from %ld to %ld",
422 oldversion, config->dbversion);
423 pid = subprogram(0, -1, "disorder-dbupgrade", (char *)0);
424 while(waitpid(pid, &err, 0) == -1 && errno == EINTR)
427 fatal(0, "disorder-dbupgrade %s", wstat(err));
428 info("disorder-dbupgrade succeeded");
430 case TRACKDB_OPEN_FOR_UPGRADE:
436 if(oldversion == config->dbversion && (flags & TRACKDB_OPEN_FOR_UPGRADE)) {
437 /* This doesn't make any sense */
438 fatal(0, "database is already at current version");
440 trackdb_existing_database = 1;
442 if(flags & TRACKDB_OPEN_FOR_UPGRADE) {
443 /* Cannot upgrade a new database */
444 fatal(0, "cannot upgrade a database that does not exist");
446 /* This is a brand new database */
447 trackdb_existing_database = 0;
449 /* open the databases */
450 if(!(trackdb_usersdb = open_db("users.db",
451 0, DB_HASH, dbflags, 0600)))
452 fatal(0, "cannot open users.db");
453 trackdb_tracksdb = open_db("tracks.db",
454 DB_RECNUM, DB_BTREE, dbflags, 0666);
455 trackdb_searchdb = open_db("search.db",
456 DB_DUP|DB_DUPSORT, DB_HASH, dbflags, 0666);
457 trackdb_tagsdb = open_db("tags.db",
458 DB_DUP|DB_DUPSORT, DB_HASH, dbflags, 0666);
459 trackdb_prefsdb = open_db("prefs.db", 0, DB_HASH, dbflags, 0666);
460 trackdb_globaldb = open_db("global.db", 0, DB_HASH, dbflags, 0666);
461 trackdb_noticeddb = open_db("noticed.db",
462 DB_DUPSORT, DB_BTREE, dbflags, 0666);
463 if(!trackdb_existing_database) {
464 /* Stash the database version */
467 assert(!(flags & TRACKDB_OPEN_FOR_UPGRADE));
468 snprintf(buf, sizeof buf, "%ld", config->dbversion);
469 trackdb_set_global("_dbversion", buf, 0);
471 D(("opened databases"));
474 /* close track databases */
475 void trackdb_close(void) {
481 if((err = trackdb_tracksdb->close(trackdb_tracksdb, 0)))
482 fatal(0, "error closing tracks.db: %s", db_strerror(err));
483 if((err = trackdb_searchdb->close(trackdb_searchdb, 0)))
484 fatal(0, "error closing search.db: %s", db_strerror(err));
485 if((err = trackdb_tagsdb->close(trackdb_tagsdb, 0)))
486 fatal(0, "error closing tags.db: %s", db_strerror(err));
487 if((err = trackdb_prefsdb->close(trackdb_prefsdb, 0)))
488 fatal(0, "error closing prefs.db: %s", db_strerror(err));
489 if((err = trackdb_globaldb->close(trackdb_globaldb, 0)))
490 fatal(0, "error closing global.db: %s", db_strerror(err));
491 if((err = trackdb_noticeddb->close(trackdb_noticeddb, 0)))
492 fatal(0, "error closing noticed.db: %s", db_strerror(err));
493 if((err = trackdb_usersdb->close(trackdb_usersdb, 0)))
494 fatal(0, "error closing users.db: %s", db_strerror(err));
495 trackdb_tracksdb = trackdb_searchdb = trackdb_prefsdb = 0;
496 trackdb_tagsdb = trackdb_globaldb = 0;
497 D(("closed databases"));
500 /* generic db routines *******************************************************/
502 /* fetch and decode a database entry. Returns 0, DB_NOTFOUND or
503 * DB_LOCK_DEADLOCK. */
504 int trackdb_getdata(DB *db,
511 switch(err = db->get(db, tid, make_key(&key, track),
512 prepare_data(&data), 0)) {
514 *kp = kvp_urldecode(data.data, data.size);
519 case DB_LOCK_DEADLOCK:
520 error(0, "error querying database: %s", db_strerror(err));
523 fatal(0, "error querying database: %s", db_strerror(err));
527 /* encode and store a database entry. Returns 0, DB_KEYEXIST or
528 * DB_LOCK_DEADLOCK. */
529 int trackdb_putdata(DB *db,
537 switch(err = db->put(db, tid, make_key(&key, track),
538 encode_data(&data, k), flags)) {
542 case DB_LOCK_DEADLOCK:
543 error(0, "error updating database: %s", db_strerror(err));
546 fatal(0, "error updating database: %s", db_strerror(err));
550 /** @brief Delete a database entry
552 * @param track Key to delete
553 * @param tid Transaction ID
554 * @return 0, DB_NOTFOUND or DB_LOCK_DEADLOCK
556 int trackdb_delkey(DB *db,
562 switch(err = db->del(db, tid, make_key(&key, track), 0)) {
566 case DB_LOCK_DEADLOCK:
567 error(0, "error updating database: %s", db_strerror(err));
570 fatal(0, "error updating database: %s", db_strerror(err));
574 /* open a database cursor */
575 DBC *trackdb_opencursor(DB *db, DB_TXN *tid) {
579 switch(err = db->cursor(db, tid, &c, 0)) {
581 default: fatal(0, "error creating cursor: %s", db_strerror(err));
586 /* close a database cursor; returns 0 or DB_LOCK_DEADLOCK */
587 int trackdb_closecursor(DBC *c) {
591 switch(err = c->c_close(c)) {
594 case DB_LOCK_DEADLOCK:
595 error(0, "error closing cursor: %s", db_strerror(err));
598 fatal(0, "error closing cursor: %s", db_strerror(err));
602 /* delete a (key,data) pair. Returns 0, DB_NOTFOUND or DB_LOCK_DEADLOCK. */
603 int trackdb_delkeydata(DB *db,
611 c = trackdb_opencursor(db, tid);
612 switch(err = c->c_get(c, make_key(&key, word),
613 make_key(&data, track), DB_GET_BOTH)) {
615 switch(err = c->c_del(c, 0)) {
621 case DB_LOCK_DEADLOCK:
622 error(0, "error updating database: %s", db_strerror(err));
625 fatal(0, "c->c_del: %s", db_strerror(err));
630 case DB_LOCK_DEADLOCK:
631 error(0, "error updating database: %s", db_strerror(err));
634 fatal(0, "c->c_get: %s", db_strerror(err));
636 if(trackdb_closecursor(c)) err = DB_LOCK_DEADLOCK;
640 /* start a transaction */
641 DB_TXN *trackdb_begin_transaction(void) {
645 if((err = trackdb_env->txn_begin(trackdb_env, 0, &tid, 0)))
646 fatal(0, "trackdb_env->txn_begin: %s", db_strerror(err));
650 /* abort transaction */
651 void trackdb_abort_transaction(DB_TXN *tid) {
655 if((err = tid->abort(tid)))
656 fatal(0, "tid->abort: %s", db_strerror(err));
659 /* commit transaction */
660 void trackdb_commit_transaction(DB_TXN *tid) {
663 if((err = tid->commit(tid, 0)))
664 fatal(0, "tid->commit: %s", db_strerror(err));
667 /* search/tags shared code ***************************************************/
669 /* comparison function used by dedupe() */
670 static int wordcmp(const void *a, const void *b) {
671 return strcmp(*(const char **)a, *(const char **)b);
674 /* sort and de-dupe VEC */
675 static char **dedupe(char **vec, int nvec) {
678 qsort(vec, nvec, sizeof (char *), wordcmp);
682 for(n = 1; n < nvec; ++n)
683 if(strcmp(vec[n], vec[m - 1]))
690 /* update a key/track database. Returns 0 or DB_DEADLOCK. */
691 static int register_word(DB *db, const char *what,
692 const char *track, const char *word,
697 switch(err = db->put(db, tid, make_key(&key, word),
698 make_key(&data, track), DB_NODUPDATA)) {
702 case DB_LOCK_DEADLOCK:
703 error(0, "error updating %s.db: %s", what, db_strerror(err));
706 fatal(0, "error updating %s.db: %s", what, db_strerror(err));
710 /* search primitives *********************************************************/
712 /* return true iff NAME is a trackname_display_ pref */
713 static int is_display_pref(const char *name) {
714 static const char prefix[] = "trackname_display_";
715 return !strncmp(name, prefix, (sizeof prefix) - 1);
718 /** @brief Word_Break property tailor that treats underscores as spaces */
719 static int tailor_underscore_Word_Break_Other(uint32_t c) {
723 case 0x005F: /* LOW LINE (SPACING UNDERSCORE) */
724 return unicode_Word_Break_Other;
728 /** @brief Remove all combining characters in-place
729 * @param s Pointer to start of string
730 * @param ns Length of string
731 * @return New, possiblby reduced, length
733 static size_t remove_combining_chars(uint32_t *s, size_t ns) {
734 uint32_t *start = s, *t = s, *end = s + ns;
737 const uint32_t c = *s++;
738 if(!utf32_combining_class(c))
744 /** @brief Normalize and split a string using a given tailoring */
745 static void word_split(struct vector *v,
747 unicode_property_tailor *pt) {
749 uint32_t *t32, **w32;
751 /* Convert to UTF-32 */
752 if(!(t32 = utf8_to_utf32(s, strlen(s), &nt32)))
754 /* Erase case distinctions */
755 if(!(t32 = utf32_casefold_compat(t32, nt32, &nt32)))
757 /* Drop combining characters */
758 nt32 = remove_combining_chars(t32, nt32);
759 /* Split into words, treating _ as a space */
760 w32 = utf32_word_split(t32, nt32, &nw, pt);
761 /* Convert words back to UTF-8 and append to result */
762 for(i = 0; i < nw; ++i)
763 vector_append(v, utf32_to_utf8(w32[i], utf32_len(w32[i]), 0));
766 /** @brief Normalize a tag
768 * @param ns Length of tag
769 * @return Normalized string or NULL on error
771 * The return value will be:
773 * - have no leading or trailing space
774 * - have no combining characters
775 * - all spacing between words will be a single U+0020 SPACE
777 static char *normalize_tag(const char *s, size_t ns) {
778 uint32_t *s32, **w32;
779 size_t ns32, nw32, i;
782 if(!(s32 = utf8_to_utf32(s, ns, &ns32)))
784 if(!(s32 = utf32_casefold_compat(s32, ns32, &ns32))) /* ->NFKD */
786 ns32 = remove_combining_chars(s32, ns32);
787 /* Split into words, no Word_Break tailoring */
788 w32 = utf32_word_split(s32, ns32, &nw32, 0);
789 /* Compose back into a string */
791 for(i = 0; i < nw32; ++i) {
793 dynstr_append(d, ' ');
794 dynstr_append_string(d, utf32_to_utf8(w32[i], utf32_len(w32[i]), 0));
800 /* compute the words of a track name */
801 static char **track_to_words(const char *track,
802 const struct kvp *p) {
804 const char *rootless = track_rootless(track);
807 rootless = track; /* bodge */
809 rootless = strip_extension(rootless);
810 word_split(&v, strip_extension(rootless), tailor_underscore_Word_Break_Other);
811 for(; p; p = p->next)
812 if(is_display_pref(p->name))
813 word_split(&v, p->value, 0);
814 vector_terminate(&v);
815 return dedupe(v.vec, v.nvec);
818 /* return nonzero iff WORD is a stopword */
819 static int stopword(const char *word) {
822 for(n = 0; n < config->stopword.n
823 && strcmp(word, config->stopword.s[n]); ++n)
825 return n < config->stopword.n;
828 /* record that WORD appears in TRACK. Returns 0 or DB_LOCK_DEADLOCK. */
829 static int register_search_word(const char *track, const char *word,
831 if(stopword(word)) return 0;
832 return register_word(trackdb_searchdb, "search", track, word, tid);
835 /* Tags **********************************************************************/
837 /* Return nonzero if C is a valid tag character */
838 static int tagchar(int c) {
847 /* Parse and de-dupe a tag list. If S=0 then assumes "". */
848 char **parsetags(const char *s) {
854 /* skip initial separators */
855 while(*s && (!tagchar(*s) || *s == ' '))
858 /* find the extent of the tag */
860 while(*s && tagchar(*s))
862 /* strip trailing spaces */
863 while(s > t && s[-1] == ' ')
865 /* add tag to list */
866 vector_append(&v, normalize_tag(t, (size_t)(s - t)));
867 /* skip intermediate and trailing separators */
868 while(*s && (!tagchar(*s) || *s == ' '))
872 vector_terminate(&v);
873 return dedupe(v.vec, v.nvec);
876 /* Record that TRACK has TAG. Returns 0 or DB_LOCK_DEADLOCK. */
877 static int register_tag(const char *track, const char *tag, DB_TXN *tid) {
878 return register_word(trackdb_tagsdb, "tags", track, tag, tid);
881 /* aliases *******************************************************************/
883 /* compute the alias and store at aliasp. Returns 0 or DB_LOCK_DEADLOCK. If
884 * there is no alias sets *aliasp to 0. */
885 static int compute_alias(char **aliasp,
890 const char *s = config->alias, *t, *expansion, *part;
891 int c, used_db = 0, slash_prefix, err;
893 const char *const root = find_track_root(track);
896 /* Bodge for tracks with no root */
901 dynstr_append_string(&d, root);
902 while((c = (unsigned char)*s++)) {
904 dynstr_append(&d, c);
907 if((slash_prefix = (*s == '/')))
910 assert(t != 0); /* validated at startup */
911 part = xstrndup(s, t - s);
912 expansion = getpart(track, "display", part, p, &used_db);
914 if(slash_prefix) dynstr_append(&d, '/');
915 dynstr_append_string(&d, expansion);
917 s = t + 1; /* skip {part} */
919 /* only admit to the alias if we used the db... */
924 dynstr_terminate(&d);
925 /* ...and the answer differs from the original... */
926 if(!strcmp(track, d.vec)) {
930 /* ...and there isn't already a different track with that name (including as
932 switch(err = trackdb_getdata(trackdb_tracksdb, d.vec, &at, tid)) {
934 if((s = kvp_get(at, "_alias_for"))
935 && !strcmp(s, track)) {
947 /* get track and prefs data (if tp/pp not null pointers). Returns 0 on
948 * success, DB_NOTFOUND if the track does not exist or DB_LOCK_DEADLOCK.
949 * Always sets the return values, even if only to null pointers. */
950 static int gettrackdata(const char *track,
953 const char **actualp,
955 #define GTD_NOALIAS 0x0001
958 const char *actual = track;
959 struct kvp *t = 0, *p = 0;
961 if((err = trackdb_getdata(trackdb_tracksdb, track, &t, tid))) goto done;
962 if((actual = kvp_get(t, "_alias_for"))) {
963 if(flags & GTD_NOALIAS) {
964 error(0, "alias passed to gettrackdata where real path required");
967 if((err = trackdb_getdata(trackdb_tracksdb, actual, &t, tid))) goto done;
972 if((err = trackdb_getdata(trackdb_prefsdb, actual, &p, tid)) == DB_LOCK_DEADLOCK)
977 if(actualp) *actualp = actual;
983 /* trackdb_notice() **********************************************************/
985 /** @brief notice a possibly new track
986 * @return @c DB_NOTFOUND if new, 0 if already known
988 int trackdb_notice(const char *track,
994 tid = trackdb_begin_transaction();
995 err = trackdb_notice_tid(track, path, tid);
996 if((err == DB_LOCK_DEADLOCK)) goto fail;
999 trackdb_abort_transaction(tid);
1001 trackdb_commit_transaction(tid);
1005 /** @brief notice a possibly new track
1006 * @param track NFC UTF-8 track name
1007 * @param path Raw path name
1008 * @param tid Transaction ID
1009 * @return @c DB_NOTFOUND if new, 0 if already known, @c DB_LOCK_DEADLOCK also
1011 int trackdb_notice_tid(const char *track,
1015 struct kvp *t, *a, *p;
1017 char *alias, **w, *noticed;
1020 /* notice whether the tracks.db entry changes */
1022 /* get any existing tracks entry */
1023 if((err = gettrackdata(track, &t, &p, 0, 0, tid)) == DB_LOCK_DEADLOCK)
1025 ret = err; /* 0 or DB_NOTFOUND */
1026 /* this is a real track */
1027 t_changed += kvp_set(&t, "_alias_for", 0);
1028 t_changed += kvp_set(&t, "_path", path);
1030 if(ret == DB_NOTFOUND) {
1031 /* It's a new track; record the time */
1032 byte_xasprintf(¬iced, "%lld", (long long)now);
1033 t_changed += kvp_set(&t, "_noticed", noticed);
1035 /* if we have an alias record it in the database */
1036 if((err = compute_alias(&alias, track, p, tid))) return err;
1038 /* won't overwrite someone else's alias as compute_alias() checks */
1039 D(("%s: alias %s", track, alias));
1041 kvp_set(&a, "_alias_for", track);
1042 if((err = trackdb_putdata(trackdb_tracksdb, alias, a, tid, 0))) return err;
1044 /* update search.db */
1045 w = track_to_words(track, p);
1046 for(n = 0; w[n]; ++n)
1047 if((err = register_search_word(track, w[n], tid)))
1049 /* update tags.db */
1050 w = parsetags(kvp_get(p, "tags"));
1051 for(n = 0; w[n]; ++n)
1052 if((err = register_tag(track, w[n], tid)))
1054 /* only store the tracks.db entry if it has changed */
1055 if(t_changed && (err = trackdb_putdata(trackdb_tracksdb, track, t, tid, 0)))
1057 if(ret == DB_NOTFOUND) {
1058 uint32_t timestamp[2];
1061 timestamp[0] = htonl((uint64_t)now >> 32);
1062 timestamp[1] = htonl((uint32_t)now);
1063 memset(&key, 0, sizeof key);
1064 key.data = timestamp;
1065 key.size = sizeof timestamp;
1066 switch(err = trackdb_noticeddb->put(trackdb_noticeddb, tid, &key,
1067 make_key(&data, track), 0)) {
1069 case DB_LOCK_DEADLOCK: return err;
1070 default: fatal(0, "error updating noticed.db: %s", db_strerror(err));
1076 /* trackdb_obsolete() ********************************************************/
1078 /* obsolete a track */
1079 int trackdb_obsolete(const char *track, DB_TXN *tid) {
1084 if((err = gettrackdata(track, 0, &p, 0,
1085 GTD_NOALIAS, tid)) == DB_LOCK_DEADLOCK)
1087 else if(err == DB_NOTFOUND) return 0;
1088 /* compute the alias, if any, and delete it */
1089 if((err = compute_alias(&alias, track, p, tid))) return err;
1091 /* if the alias points to some other track then compute_alias won't
1093 if((err = trackdb_delkey(trackdb_tracksdb, alias, tid))
1094 && err != DB_NOTFOUND)
1097 /* update search.db */
1098 w = track_to_words(track, p);
1099 for(n = 0; w[n]; ++n)
1100 if(trackdb_delkeydata(trackdb_searchdb,
1101 w[n], track, tid) == DB_LOCK_DEADLOCK)
1103 /* update tags.db */
1104 w = parsetags(kvp_get(p, "tags"));
1105 for(n = 0; w[n]; ++n)
1106 if(trackdb_delkeydata(trackdb_tagsdb,
1107 w[n], track, tid) == DB_LOCK_DEADLOCK)
1109 /* update tracks.db */
1110 if(trackdb_delkey(trackdb_tracksdb, track, tid) == DB_LOCK_DEADLOCK)
1112 /* We don't delete the prefs, so they survive temporary outages of the
1113 * (possibly virtual) track filesystem */
1117 /* trackdb_stats() ***********************************************************/
1119 #define H(name) { #name, offsetof(DB_HASH_STAT, name) }
1120 #define B(name) { #name, offsetof(DB_BTREE_STAT, name) }
1122 static const struct statinfo {
1125 } statinfo_hash[] = {
1141 }, statinfo_btree[] = {
1162 /* look up stats for DB */
1163 static int get_stats(struct vector *v,
1165 const struct statinfo *si,
1174 switch(err = database->stat(database, tid, &sp, 0)) {
1177 case DB_LOCK_DEADLOCK:
1178 error(0, "error querying database: %s", db_strerror(err));
1181 fatal(0, "error querying database: %s", db_strerror(err));
1183 for(n = 0; n < nsi; ++n) {
1184 byte_xasprintf(&str, "%s=%"PRIuMAX, si[n].name,
1185 (uintmax_t)*(u_int32_t *)((char *)sp + si[n].offset));
1186 vector_append(v, str);
1192 /** @brief One entry in the search league */
1193 struct search_entry {
1198 /** @brief Add a word to the search league
1199 * @param se Pointer to search league
1200 * @param count Maximum size for search league
1201 * @param nse Current size of search league
1202 * @param word New word, or NULL
1203 * @param n How often @p word appears
1204 * @return New size of search league
1206 static int register_search_entry(struct search_entry *se,
1213 if(word && (nse < count || n > se[nse - 1].n)) {
1214 /* Find the starting point */
1219 /* Find the insertion point */
1220 while(i > 0 && n > se[i - 1].n)
1222 memmove(&se[i + 1], &se[i], (nse - i - 1) * sizeof *se);
1229 /* find the top COUNT words in the search database */
1230 static int search_league(struct vector *v, int count, DB_TXN *tid) {
1231 struct search_entry *se;
1234 int err, n = 0, nse = 0, i;
1239 cursor = trackdb_opencursor(trackdb_searchdb, tid);
1240 se = xmalloc(count * sizeof *se);
1241 /* Walk across the whole database counting up the number of times each
1243 while(!(err = cursor->c_get(cursor, prepare_data(&k), prepare_data(&d),
1245 if(word && wl == k.size && !strncmp(word, k.data, wl))
1246 ++n; /* same word again */
1248 nse = register_search_entry(se, count, nse, word, n);
1249 word = xstrndup(k.data, wl = k.size);
1257 case DB_LOCK_DEADLOCK:
1258 error(0, "error querying search database: %s", db_strerror(err));
1261 fatal(0, "error querying search database: %s", db_strerror(err));
1263 if(trackdb_closecursor(cursor)) err = DB_LOCK_DEADLOCK;
1265 nse = register_search_entry(se, count, nse, word, n);
1266 byte_xasprintf(&str, "Top %d search words:", nse);
1267 vector_append(v, str);
1268 for(i = 0; i < nse; ++i) {
1269 byte_xasprintf(&str, "%4d: %5d %s", i + 1, se[i].n, se[i].word);
1270 vector_append(v, str);
1275 #define SI(what) statinfo_##what, \
1276 sizeof statinfo_##what / sizeof (struct statinfo)
1278 /* return a list of database stats */
1279 char **trackdb_stats(int *nstatsp) {
1285 tid = trackdb_begin_transaction();
1287 vector_append(&v, (char *)"Tracks database stats:");
1288 if(get_stats(&v, trackdb_tracksdb, SI(btree), tid)) goto fail;
1289 vector_append(&v, (char *)"");
1290 vector_append(&v, (char *)"Search database stats:");
1291 if(get_stats(&v, trackdb_searchdb, SI(hash), tid)) goto fail;
1292 vector_append(&v, (char *)"");
1293 vector_append(&v, (char *)"Prefs database stats:");
1294 if(get_stats(&v, trackdb_prefsdb, SI(hash), tid)) goto fail;
1295 vector_append(&v, (char *)"");
1296 if(search_league(&v, 10, tid)) goto fail;
1297 vector_terminate(&v);
1300 trackdb_abort_transaction(tid);
1302 trackdb_commit_transaction(tid);
1303 if(nstatsp) *nstatsp = v.nvec;
1307 struct stats_details {
1308 void (*done)(char *data, void *u);
1310 int exited; /* subprocess exited */
1311 int closed; /* pipe close */
1312 int wstat; /* wait status from subprocess */
1313 struct dynstr data[1]; /* data read from pipe */
1316 static void stats_complete(struct stats_details *d) {
1319 if(!(d->exited && d->closed))
1321 byte_xasprintf(&s, "\n"
1323 "track lookup cache hits: %lu\n"
1324 "track lookup cache misses: %lu\n",
1326 cache_files_misses);
1327 dynstr_append_string(d->data, s);
1328 dynstr_terminate(d->data);
1329 d->done(d->data->vec, d->u);
1332 static int stats_finished(ev_source attribute((unused)) *ev,
1333 pid_t attribute((unused)) pid,
1335 const struct rusage attribute((unused)) *rusage,
1337 struct stats_details *const d = u;
1341 error(0, "disorder-stats %s", wstat(status));
1346 static int stats_read(ev_source attribute((unused)) *ev,
1352 struct stats_details *const d = u;
1354 dynstr_append_bytes(d->data, ptr, bytes);
1355 ev_reader_consume(reader, bytes);
1362 static int stats_error(ev_source attribute((unused)) *ev,
1365 struct stats_details *const d = u;
1367 error(errno_value, "error reading from pipe to disorder-stats");
1373 void trackdb_stats_subprocess(ev_source *ev,
1374 void (*done)(char *data, void *u),
1378 struct stats_details *d = xmalloc(sizeof *d);
1380 dynstr_init(d->data);
1384 pid = subprogram(ev, p[1], "disorder-stats", (char *)0);
1386 ev_child(ev, pid, 0, stats_finished, d);
1387 ev_reader_new(ev, p[0], stats_read, stats_error, d, "disorder-stats reader");
1390 /** @brief Parse a track name part preference
1391 * @param name Preference name
1392 * @param partp Where to store part name
1393 * @param contextp Where to store context name
1394 * @return 0 on success, non-0 if parse fails
1396 static int trackdb__parse_namepref(const char *name,
1400 static const char prefix[] = "trackname_";
1402 if(strncmp(name, prefix, strlen(prefix)))
1403 return -1; /* not trackname_* at all */
1404 name += strlen(prefix);
1405 /* There had better be a _ between context and part */
1406 c = strchr(name, '_');
1409 /* Context is first in the pref name even though most APIs have the part
1410 * first. Confusing; sorry. */
1411 *contextp = xstrndup(name, c - name);
1413 /* There had better NOT be a second _ */
1416 *partp = xstrdup(c);
1420 /** @brief Compute the default value for a track preference
1421 * @param track Track name
1422 * @param name Preference name
1423 * @return Default value or 0 if none/not known
1425 static const char *trackdb__default(const char *track, const char *name) {
1426 char *context, *part;
1428 if(!trackdb__parse_namepref(name, &part, &context)) {
1429 /* We can work out the default for a trackname_ pref */
1430 return trackname_part(track, context, part);
1431 } else if(!strcmp(name, "weight")) {
1432 /* We know the default weight */
1434 } else if(!strcmp(name, "pick_at_random")) {
1435 /* By default everything is eligible for picking at random */
1437 } else if(!strcmp(name, "tags")) {
1438 /* By default everything no track has any tags */
1444 /* set a pref (remove if value=0) */
1445 int trackdb_set(const char *track,
1447 const char *value) {
1448 struct kvp *t, *p, *a;
1451 char *oldalias, *newalias, **oldtags = 0, **newtags;
1454 /* If the value matches the default then unset instead, to keep the database
1455 * tidy. Older versions did not have this feature so your database may yet
1456 * have some default values stored in it. */
1458 def = trackdb__default(track, name);
1459 if(def && !strcmp(value, def))
1464 tid = trackdb_begin_transaction();
1465 if((err = gettrackdata(track, &t, &p, 0,
1466 0, tid)) == DB_LOCK_DEADLOCK)
1468 if(err == DB_NOTFOUND) break;
1469 if(name[0] == '_') {
1470 if(kvp_set(&t, name, value))
1471 if(trackdb_putdata(trackdb_tracksdb, track, t, tid, 0))
1474 /* get the old alias name */
1475 if(compute_alias(&oldalias, track, p, tid)) goto fail;
1476 /* get the old tags */
1477 if(!strcmp(name, "tags"))
1478 oldtags = parsetags(kvp_get(p, "tags"));
1480 if(kvp_set(&p, name, value))
1481 if(trackdb_putdata(trackdb_prefsdb, track, p, tid, 0))
1483 /* compute the new alias name */
1484 if((err = compute_alias(&newalias, track, p, tid))) goto fail;
1485 /* check whether alias has changed */
1486 if(!(oldalias == newalias
1487 || (oldalias && newalias && !strcmp(oldalias, newalias)))) {
1488 /* adjust alias records to fit change */
1490 && trackdb_delkey(trackdb_tracksdb, oldalias, tid) == DB_LOCK_DEADLOCK)
1494 kvp_set(&a, "_alias_for", track);
1495 if(trackdb_putdata(trackdb_tracksdb, newalias, a, tid, 0)) goto fail;
1498 /* check whether tags have changed */
1499 if(!strcmp(name, "tags")) {
1500 newtags = parsetags(value);
1501 while(*oldtags || *newtags) {
1502 if(*oldtags && *newtags) {
1503 cmp = strcmp(*oldtags, *newtags);
1505 /* keeping this tag */
1509 /* old tag fits into a gap in the new list, so delete old */
1512 /* new tag fits into a gap in the old list, so insert new */
1514 } else if(*oldtags) {
1515 /* we've run out of new tags, so remaining old ones are to be
1518 if(trackdb_delkeydata(trackdb_tagsdb,
1519 *oldtags, track, tid) == DB_LOCK_DEADLOCK)
1523 /* we've run out of old tags, so remainig new ones are to be
1526 if(register_tag(track, *newtags, tid)) goto fail;
1535 trackdb_abort_transaction(tid);
1537 trackdb_commit_transaction(tid);
1538 return err == 0 ? 0 : -1;
1542 const char *trackdb_get(const char *track,
1544 return kvp_get(trackdb_get_all(track), name);
1547 /* get all prefs as a 0-terminated array */
1548 struct kvp *trackdb_get_all(const char *track) {
1549 struct kvp *t, *p, **pp;
1553 tid = trackdb_begin_transaction();
1554 if(gettrackdata(track, &t, &p, 0, 0, tid) == DB_LOCK_DEADLOCK)
1558 trackdb_abort_transaction(tid);
1560 trackdb_commit_transaction(tid);
1561 for(pp = &p; *pp; pp = &(*pp)->next)
1568 const char *trackdb_resolve(const char *track) {
1573 tid = trackdb_begin_transaction();
1574 if(gettrackdata(track, 0, 0, &actual, 0, tid) == DB_LOCK_DEADLOCK)
1578 trackdb_abort_transaction(tid);
1580 trackdb_commit_transaction(tid);
1584 int trackdb_isalias(const char *track) {
1585 const char *actual = trackdb_resolve(track);
1587 return strcmp(actual, track);
1590 /* test whether a track exists (perhaps an alias) */
1591 int trackdb_exists(const char *track) {
1596 tid = trackdb_begin_transaction();
1597 /* unusually, here we want the return value */
1598 if((err = gettrackdata(track, 0, 0, 0, 0, tid)) == DB_LOCK_DEADLOCK)
1602 trackdb_abort_transaction(tid);
1604 trackdb_commit_transaction(tid);
1608 /* return the list of tags */
1609 char **trackdb_alltags(void) {
1614 WITH_TRANSACTION(trackdb_listkeys(trackdb_tagsdb, v, tid));
1618 /** @brief List all the keys in @p db
1619 * @param db Database
1620 * @param v Vector to store keys in
1621 * @param tid Transaction ID
1622 * @return 0 or DB_LOCK_DEADLOCK
1624 int trackdb_listkeys(DB *db, struct vector *v, DB_TXN *tid) {
1627 DBC *const c = trackdb_opencursor(db, tid);
1630 memset(&k, 0, sizeof k);
1631 while(!(e = c->c_get(c, &k, prepare_data(&d), DB_NEXT_NODUP)))
1632 vector_append(v, xstrndup(k.data, k.size));
1636 case DB_LOCK_DEADLOCK:
1639 fatal(0, "c->c_get: %s", db_strerror(e));
1641 if((e = trackdb_closecursor(c)))
1643 vector_terminate(v);
1647 /* return 1 iff sorted tag lists A and B have at least one member in common */
1648 int tag_intersection(char **a, char **b) {
1651 /* Same sort of logic as trackdb_set() above */
1653 if(!(cmp = strcmp(*a, *b))) return 1;
1654 else if(cmp < 0) ++a;
1660 static pid_t choose_pid = -1;
1661 static int choose_fd;
1662 static random_callback *choose_callback;
1663 static struct dynstr choose_output;
1664 static unsigned choose_complete;
1665 static int choose_status;
1666 #define CHOOSE_RUNNING 1
1667 #define CHOOSE_READING 2
1669 static void choose_finished(ev_source *ev, unsigned which) {
1670 choose_complete |= which;
1671 if(choose_complete != (CHOOSE_RUNNING|CHOOSE_READING))
1674 if(choose_status == 0 && choose_output.nvec > 0) {
1675 dynstr_terminate(&choose_output);
1676 choose_callback(ev, xstrdup(choose_output.vec));
1678 choose_callback(ev, 0);
1681 /** @brief Called when @c disorder-choose terminates */
1682 static int choose_exited(ev_source *ev,
1683 pid_t attribute((unused)) pid,
1685 const struct rusage attribute((unused)) *rusage,
1686 void attribute((unused)) *u) {
1688 error(0, "disorder-choose %s", wstat(status));
1689 choose_status = status;
1690 choose_finished(ev, CHOOSE_RUNNING);
1694 /** @brief Called with data from @c disorder-choose pipe */
1695 static int choose_readable(ev_source *ev,
1700 void attribute((unused)) *u) {
1701 dynstr_append_bytes(&choose_output, ptr, bytes);
1702 ev_reader_consume(reader, bytes);
1704 choose_finished(ev, CHOOSE_READING);
1708 static int choose_read_error(ev_source *ev,
1710 void attribute((unused)) *u) {
1711 error(errno_value, "error reading disorder-choose pipe");
1712 choose_finished(ev, CHOOSE_READING);
1716 /** @brief Request a random track
1717 * @param ev Event source
1718 * @param callback Called with random track or NULL
1719 * @return 0 if a request was initiated, else -1
1721 * Initiates a random track choice. @p callback will later be called back with
1722 * the choice (or NULL on error). If a choice is already underway then -1 is
1723 * returned and there will be no additional callback.
1725 * The caller shouldn't assume that the track returned actually exists (it
1726 * might be removed between the choice and the callback, or between being added
1727 * to the queue and being played).
1729 int trackdb_request_random(ev_source *ev,
1730 random_callback *callback) {
1733 if(choose_pid != -1)
1734 return -1; /* don't run concurrent chooses */
1737 choose_pid = subprogram(ev, p[1], "disorder-choose", (char *)0);
1740 choose_callback = callback;
1741 choose_output.nvec = 0;
1742 choose_complete = 0;
1743 ev_reader_new(ev, p[0], choose_readable, choose_read_error, 0,
1744 "disorder-choose reader"); /* owns p[0] */
1745 ev_child(ev, choose_pid, 0, choose_exited, 0); /* owns the subprocess */
1749 /* get a track name given the prefs. Set *used_db to 1 if we got the answer
1750 * from the prefs. */
1751 static const char *getpart(const char *track,
1752 const char *context,
1754 const struct kvp *p,
1759 byte_xasprintf(&pref, "trackname_%s_%s", context, part);
1760 if((result = kvp_get(p, pref)))
1763 result = trackname_part(track, context, part);
1764 assert(result != 0);
1768 /* get a track name part, like trackname_part(), but taking the database into
1770 const char *trackdb_getpart(const char *track,
1771 const char *context,
1779 /* construct the full pref */
1780 byte_xasprintf(&pref, "trackname_%s_%s", context, part);
1782 tid = trackdb_begin_transaction();
1783 if((err = gettrackdata(track, 0, &p, &actual, 0, tid)) == DB_LOCK_DEADLOCK)
1787 trackdb_abort_transaction(tid);
1789 trackdb_commit_transaction(tid);
1790 return getpart(actual, context, part, p, &used_db);
1793 /* get the raw path name for @track@ (might be an alias) */
1794 const char *trackdb_rawpath(const char *track) {
1800 tid = trackdb_begin_transaction();
1801 if(gettrackdata(track, &t, 0, 0, 0, tid) == DB_LOCK_DEADLOCK)
1805 trackdb_abort_transaction(tid);
1807 trackdb_commit_transaction(tid);
1808 if(!(path = kvp_get(t, "_path"))) path = track;
1812 /* trackdb_list **************************************************************/
1814 /* this is incredibly ugly, sorry, perhaps it will be rewritten to be actually
1815 * readable at some point */
1817 /* return true if the basename of TRACK[0..TL-1], as defined by DL, matches RE.
1818 * If RE is a null pointer then it matches everything. */
1819 static int track_matches(size_t dl, const char *track, size_t tl,
1827 switch(rc = pcre_exec(re, 0, track, tl, 0, 0, ovec, 3)) {
1828 case PCRE_ERROR_NOMATCH: return 0;
1831 error(0, "pcre_exec returned %d, subject '%s'", rc, track);
1838 static int do_list(struct vector *v, const char *dir,
1839 enum trackdb_listable what, const pcre *re, DB_TXN *tid) {
1845 size_t l, last_dir_len = 0;
1846 char *last_dir = 0, *track, *alias;
1850 cursor = trackdb_opencursor(trackdb_tracksdb, tid);
1853 /* find the first key >= dir */
1854 err = cursor->c_get(cursor, &k, &d, DB_SET_RANGE);
1855 /* keep going while we're dealing with <dir/anything> */
1858 && ((char *)k.data)[dl] == '/'
1859 && !memcmp(k.data, dir, dl)) {
1860 ptr = memchr((char *)k.data + dl + 1, '/', k.size - (dl + 1));
1862 /* we have <dir/component/anything>, so <dir/component> is a directory */
1863 l = ptr - (char *)k.data;
1864 if(what & trackdb_directories)
1866 && l == last_dir_len
1867 && !memcmp(last_dir, k.data, l))) {
1868 last_dir = xstrndup(k.data, last_dir_len = l);
1869 if(track_matches(dl, k.data, l, re))
1870 vector_append(v, last_dir);
1873 /* found a plain file */
1874 if((what & trackdb_files)) {
1875 track = xstrndup(k.data, k.size);
1876 if((err = trackdb_getdata(trackdb_prefsdb,
1877 track, &p, tid)) == DB_LOCK_DEADLOCK)
1879 /* if this file has an alias in the same directory then we skip it */
1880 if((err = compute_alias(&alias, track, p, tid)))
1882 if(!(alias && !strcmp(d_dirname(alias), d_dirname(track))))
1883 if(track_matches(dl, k.data, k.size, re))
1884 vector_append(v, track);
1887 err = cursor->c_get(cursor, &k, &d, DB_NEXT);
1895 case DB_LOCK_DEADLOCK:
1896 error(0, "error querying database: %s", db_strerror(err));
1899 fatal(0, "error querying database: %s", db_strerror(err));
1902 if(trackdb_closecursor(cursor)) err = DB_LOCK_DEADLOCK;
1906 /* return the directories or files below @dir@ */
1907 char **trackdb_list(const char *dir, int *np, enum trackdb_listable what,
1915 tid = trackdb_begin_transaction();
1918 if(do_list(&v, dir, what, re, tid))
1921 for(n = 0; n < config->collection.n; ++n)
1922 if(do_list(&v, config->collection.s[n].root, what, re, tid))
1927 trackdb_abort_transaction(tid);
1929 trackdb_commit_transaction(tid);
1930 vector_terminate(&v);
1936 /* If S is tag:something, return something. Else return 0. */
1937 static const char *checktag(const char *s) {
1938 if(!strncmp(s, "tag:", 4))
1944 /* return a list of tracks containing all of the words given. If you
1945 * ask for only stopwords you get no tracks. */
1946 char **trackdb_search(char **wordlist, int nwordlist, int *ntracks) {
1947 const char **w, *best = 0, *tag;
1948 char **twords, **tags;
1950 int i, j, n, err, what;
1960 *ntracks = 0; /* for early returns */
1961 /* normalize all the words */
1962 w = xmalloc(nwordlist * sizeof (char *));
1963 istag = xmalloc_noptr(nwordlist);
1964 for(n = 0; n < nwordlist; ++n) {
1968 w[n] = utf8_casefold_compat(wordlist[n], strlen(wordlist[n]), 0);
1969 if(checktag(w[n])) {
1970 ++ntags; /* count up tags */
1971 /* Normalize the tag */
1972 w[n] = normalize_tag(w[n] + 4, strlen(w[n] + 4));
1975 /* Normalize the search term by removing combining characters */
1976 if(!(w32 = utf8_to_utf32(w[n], strlen(w[n]), &nw32)))
1978 nw32 = remove_combining_chars(w32, nw32);
1979 if(!(w[n] = utf32_to_utf8(w32, nw32, 0)))
1984 /* find the longest non-stopword */
1985 for(n = 0; n < nwordlist; ++n)
1986 if(!istag[n] && !stopword(w[n]))
1987 if(!best || strlen(w[n]) > strlen(best))
1989 /* TODO: we should at least in principal be able to identify the word or tag
1990 * with the least matches in log time, and choose that as our primary search
1992 if(ntags && !best) {
1993 /* Only tags are listed. We limit to the first and narrow down with the
1995 best = istag[0] ? w[0] : 0;
1996 db = trackdb_tagsdb;
1999 /* We can limit to some word. */
2000 db = trackdb_searchdb;
2003 /* Only stopwords */
2009 tid = trackdb_begin_transaction();
2010 /* find all the tracks that have that word */
2015 cursor = trackdb_opencursor(db, tid);
2016 while(!(err = cursor->c_get(cursor, &k, &d, what))) {
2017 vector_append(&v, xstrndup(d.data, d.size));
2024 case DB_LOCK_DEADLOCK:
2025 error(0, "error querying %s database: %s", dbname, db_strerror(err));
2028 fatal(0, "error querying %s database: %s", dbname, db_strerror(err));
2030 if(trackdb_closecursor(cursor)) err = DB_LOCK_DEADLOCK;
2032 /* do a naive search over that (hopefuly fairly small) list of tracks */
2034 for(n = 0; n < v.nvec; ++n) {
2035 if((err = gettrackdata(v.vec[n], 0, &p, 0, 0, tid) == DB_LOCK_DEADLOCK))
2038 error(0, "track %s unexpected error: %s", v.vec[n], db_strerror(err));
2041 twords = track_to_words(v.vec[n], p);
2042 tags = parsetags(kvp_get(p, "tags"));
2043 for(i = 0; i < nwordlist; ++i) {
2046 /* Track must have this tag */
2047 for(j = 0; tags[j]; ++j)
2048 if(!strcmp(tag, tags[j])) break; /* tag found */
2049 if(!tags[j]) break; /* tag not found */
2051 /* Track must contain this word */
2052 for(j = 0; twords[j]; ++j)
2053 if(!strcmp(w[i], twords[j])) break; /* word found */
2054 if(!twords[j]) break; /* word not found */
2057 if(i >= nwordlist) /* all words found */
2058 vector_append(&u, v.vec[n]);
2062 trackdb_closecursor(cursor);
2064 trackdb_abort_transaction(tid);
2065 info("retrying search");
2067 trackdb_commit_transaction(tid);
2068 vector_terminate(&u);
2074 /* trackdb_scan **************************************************************/
2076 int trackdb_scan(const char *root,
2077 int (*callback)(const char *track,
2086 const size_t root_len = root ? strlen(root) : 0;
2088 struct kvp *data, *prefs;
2091 cursor = trackdb_opencursor(trackdb_tracksdb, tid);
2093 err = cursor->c_get(cursor, make_key(&k, root), prepare_data(&d),
2096 memset(&k, 0, sizeof k);
2097 err = cursor->c_get(cursor, &k, prepare_data(&d),
2102 || (k.size > root_len
2103 && !strncmp(k.data, root, root_len)
2104 && ((char *)k.data)[root_len] == '/')) {
2105 data = kvp_urldecode(d.data, d.size);
2106 if(kvp_get(data, "_path")) {
2107 track = xstrndup(k.data, k.size);
2108 /* TODO: trackdb_prefsdb is currently a DB_HASH. This means we have to
2109 * do a lookup for every single track. In fact this is quite quick:
2110 * with around 10,000 tracks a complete scan is around 0.3s on my
2111 * 2.2GHz Athlon. However, if it were a DB_BTREE, we could do the same
2112 * linear walk as we already do over trackdb_tracksdb, and probably get
2113 * even higher performance. That would require upgrade logic to
2114 * translate old databases though.
2116 switch(err = trackdb_prefsdb->get(trackdb_prefsdb, tid, &k,
2117 prepare_data(&pd), 0)) {
2119 prefs = kvp_urldecode(pd.data, pd.size);
2124 case DB_LOCK_DEADLOCK:
2125 error(0, "getting prefs: %s", db_strerror(err));
2126 trackdb_closecursor(cursor);
2129 fatal(0, "getting prefs: %s", db_strerror(err));
2131 /* Advance to the next track before the callback so that the callback
2132 * may safely delete the track */
2133 err = cursor->c_get(cursor, &k, &d, DB_NEXT);
2134 if((cberr = callback(track, data, prefs, u, tid))) {
2139 err = cursor->c_get(cursor, &k, &d, DB_NEXT);
2143 trackdb_closecursor(cursor);
2150 case DB_LOCK_DEADLOCK:
2151 error(0, "c->c_get: %s", db_strerror(err));
2154 fatal(0, "c->c_get: %s", db_strerror(err));
2158 /* trackdb_rescan ************************************************************/
2160 /* called when the rescanner terminates */
2161 static int reap_rescan(ev_source attribute((unused)) *ev,
2164 const struct rusage attribute((unused)) *rusage,
2165 void attribute((unused)) *u) {
2166 if(pid == rescan_pid) rescan_pid = -1;
2168 error(0, RESCAN": %s", wstat(status));
2170 D((RESCAN" terminated: %s", wstat(status)));
2171 /* Our cache of file lookups is out of date now */
2172 cache_clean(&cache_files_type);
2173 eventlog("rescanned", (char *)0);
2177 /** @brief Initiate a rescan
2178 * @param ev Event loop or 0 to block
2179 * @param recheck 1 to recheck lengths, 0 to suppress check
2181 void trackdb_rescan(ev_source *ev, int recheck) {
2184 if(rescan_pid != -1) {
2185 error(0, "rescan already underway");
2188 rescan_pid = subprogram(ev, -1, RESCAN,
2189 recheck ? "--check" : "--no-check",
2192 ev_child(ev, rescan_pid, 0, reap_rescan, 0);
2193 D(("started rescanner"));
2195 /* This is the first rescan, we block until it is complete */
2196 while(waitpid(rescan_pid, &w, 0) < 0 && errno == EINTR)
2198 reap_rescan(0, rescan_pid, w, 0, 0);
2202 int trackdb_rescan_cancel(void) {
2203 if(rescan_pid == -1) return 0;
2204 if(kill(rescan_pid, SIGTERM) < 0)
2205 fatal(errno, "error killing rescanner");
2210 /* global prefs **************************************************************/
2212 void trackdb_set_global(const char *name,
2220 tid = trackdb_begin_transaction();
2221 if(!(err = trackdb_set_global_tid(name, value, tid)))
2223 trackdb_abort_transaction(tid);
2225 trackdb_commit_transaction(tid);
2226 /* log important state changes */
2227 if(!strcmp(name, "playing")) {
2228 state = !value || !strcmp(value, "yes");
2229 info("playing %s by %s",
2230 state ? "enabled" : "disabled",
2232 eventlog("state", state ? "enable_play" : "disable_play", (char *)0);
2234 if(!strcmp(name, "random-play")) {
2235 state = !value || !strcmp(value, "yes");
2236 info("random play %s by %s",
2237 state ? "enabled" : "disabled",
2239 eventlog("state", state ? "enable_random" : "disable_random", (char *)0);
2243 int trackdb_set_global_tid(const char *name,
2249 memset(&k, 0, sizeof k);
2250 memset(&d, 0, sizeof d);
2251 k.data = (void *)name;
2252 k.size = strlen(name);
2254 d.data = (void *)value;
2255 d.size = strlen(value);
2258 err = trackdb_globaldb->put(trackdb_globaldb, tid, &k, &d, 0);
2260 err = trackdb_globaldb->del(trackdb_globaldb, tid, &k, 0);
2261 if(err == DB_LOCK_DEADLOCK) return err;
2263 fatal(0, "error updating database: %s", db_strerror(err));
2267 const char *trackdb_get_global(const char *name) {
2273 tid = trackdb_begin_transaction();
2274 if(!(err = trackdb_get_global_tid(name, tid, &r)))
2276 trackdb_abort_transaction(tid);
2278 trackdb_commit_transaction(tid);
2282 int trackdb_get_global_tid(const char *name,
2288 memset(&k, 0, sizeof k);
2289 k.data = (void *)name;
2290 k.size = strlen(name);
2291 switch(err = trackdb_globaldb->get(trackdb_globaldb, tid, &k,
2292 prepare_data(&d), 0)) {
2294 *rp = xstrndup(d.data, d.size);
2299 case DB_LOCK_DEADLOCK:
2302 fatal(0, "error reading database: %s", db_strerror(err));
2306 /** @brief Retrieve the most recently added tracks
2307 * @param ntracksp Where to put count, or 0
2308 * @param maxtracks Maximum number of tracks to retrieve
2309 * @return null-terminated array of track names
2311 * The most recently added track is first in the array.
2313 char **trackdb_new(int *ntracksp,
2319 tid = trackdb_begin_transaction();
2320 tracks = trackdb_new_tid(ntracksp, maxtracks, tid);
2323 trackdb_abort_transaction(tid);
2325 trackdb_commit_transaction(tid);
2329 /** @brief Retrieve the most recently added tracks
2330 * @param ntracksp Where to put count, or 0
2331 * @param maxtracks Maximum number of tracks to retrieve, or 0 for all
2332 * @param tid Transaction ID
2333 * @return null-terminated array of track names, or NULL on deadlock
2335 * The most recently added track is first in the array.
2337 static char **trackdb_new_tid(int *ntracksp,
2343 struct vector tracks[1];
2345 vector_init(tracks);
2346 c = trackdb_opencursor(trackdb_noticeddb, tid);
2347 while((maxtracks <= 0 || tracks->nvec < maxtracks)
2348 && !(err = c->c_get(c, prepare_data(&k), prepare_data(&d), DB_PREV)))
2349 vector_append(tracks, xstrndup(d.data, d.size));
2351 case 0: /* hit maxtracks */
2352 case DB_NOTFOUND: /* ran out of tracks */
2354 case DB_LOCK_DEADLOCK:
2355 trackdb_closecursor(c);
2358 fatal(0, "error reading noticed.db: %s", db_strerror(err));
2360 if((err = trackdb_closecursor(c)))
2361 return 0; /* deadlock */
2362 vector_terminate(tracks);
2364 *ntracksp = tracks->nvec;
2368 /** @brief Expire noticed.db
2369 * @param earliest Earliest timestamp to keep
2371 void trackdb_expire_noticed(time_t earliest) {
2375 tid = trackdb_begin_transaction();
2376 if(!trackdb_expire_noticed_tid(earliest, tid))
2378 trackdb_abort_transaction(tid);
2380 trackdb_commit_transaction(tid);
2383 /** @brief Expire noticed.db
2384 * @param earliest Earliest timestamp to keep
2385 * @param tid Transaction ID
2386 * @return 0 or DB_LOCK_DEADLOCK
2388 static int trackdb_expire_noticed_tid(time_t earliest, DB_TXN *tid) {
2396 c = trackdb_opencursor(trackdb_noticeddb, tid);
2397 while(!(err = c->c_get(c, prepare_data(&k), prepare_data(&d), DB_NEXT))) {
2399 when = (time_t)(((uint64_t)ntohl(kk[0]) << 32) + ntohl(kk[1]));
2400 if(when >= earliest)
2402 if((err = c->c_del(c, 0))) {
2403 if(err != DB_LOCK_DEADLOCK)
2404 fatal(0, "error deleting expired noticed.db entry: %s",
2410 if(err == DB_NOTFOUND)
2412 if(err && err != DB_LOCK_DEADLOCK)
2413 fatal(0, "error expiring noticed.db: %s", db_strerror(err));
2415 if((err = trackdb_closecursor(c))) {
2416 if(err != DB_LOCK_DEADLOCK)
2417 fatal(0, "error closing cursor: %s", db_strerror(err));
2421 info("expired %d tracks from noticed.db", count);
2425 /* tidying up ****************************************************************/
2427 void trackdb_gc(void) {
2431 if((err = trackdb_env->txn_checkpoint(trackdb_env,
2432 config->checkpoint_kbyte,
2433 config->checkpoint_min,
2435 fatal(0, "trackdb_env->txn_checkpoint: %s", db_strerror(err));
2436 if((err = trackdb_env->log_archive(trackdb_env, &logfiles, DB_ARCH_REMOVE)))
2437 fatal(0, "trackdb_env->log_archive: %s", db_strerror(err));
2438 /* This makes catastrophic recovery impossible. However, the user can still
2439 * preserve the important data by using disorder-dump to snapshot their
2440 * prefs, and later to restore it. This is likely to have much small
2441 * long-term storage requirements than record the db logfiles. */
2444 /* user database *************************************************************/
2446 /** @brief Return true if @p user is trusted */
2447 static int trusted(const char *user) {
2450 for(n = 0; (n < config->trust.n
2451 && strcmp(config->trust.s[n], user)); ++n)
2453 return n < config->trust.n;
2456 /** @brief Return non-zero for a valid username
2458 * Currently we only allow the letters and digits in ASCII. We could be more
2459 * liberal than this but it is a nice simple test. It is critical that
2460 * semicolons are never allowed.
2462 static int valid_username(const char *user) {
2466 const uint8_t c = *user++;
2467 /* For now we are very strict */
2468 if((c >= 'a' && c <= 'z')
2469 || (c >= 'A' && c <= 'Z')
2470 || (c >= '0' && c <= '9'))
2478 /** @brief Add a user */
2479 static int create_user(const char *user,
2480 const char *password,
2483 const char *confirmation,
2489 /* sanity check user */
2490 if(!valid_username(user)) {
2491 error(0, "invalid username '%s'", user);
2494 if(parse_rights(rights, 0, 1)) {
2495 error(0, "invalid rights string");
2498 /* data for this user */
2500 kvp_set(&k, "password", password);
2501 kvp_set(&k, "rights", rights);
2503 kvp_set(&k, "email", email);
2505 kvp_set(&k, "confirmation", confirmation);
2506 snprintf(s, sizeof s, "%jd", (intmax_t)time(0));
2507 kvp_set(&k, "created", s);
2508 return trackdb_putdata(trackdb_usersdb, user, k, tid, flags);
2511 /** @brief Add one pre-existing user */
2512 static int one_old_user(const char *user, const char *password,
2516 /* www-data doesn't get added */
2517 if(!strcmp(user, "www-data")) {
2518 info("not adding www-data to user database");
2522 if(!strcmp(user, "root"))
2524 else if(trusted(user)) {
2527 parse_rights(config->default_rights, &r, 1);
2528 r &= ~(rights_type)(RIGHT_SCRATCH__MASK|RIGHT_MOVE__MASK|RIGHT_REMOVE__MASK);
2529 r |= (RIGHT_ADMIN|RIGHT_RESCAN
2530 |RIGHT_SCRATCH_ANY|RIGHT_MOVE_ANY|RIGHT_REMOVE_ANY);
2531 rights = rights_string(r);
2533 rights = config->default_rights;
2534 return create_user(user, password, rights, 0/*email*/, 0/*confirmation*/,
2535 tid, DB_NOOVERWRITE);
2538 static int trackdb_old_users_tid(DB_TXN *tid) {
2541 for(n = 0; n < config->allow.n; ++n) {
2542 switch(one_old_user(config->allow.s[n].s[0], config->allow.s[n].s[1],
2545 info("created user %s from 'allow' directive", config->allow.s[n].s[0]);
2548 error(0, "user %s already exists, delete 'allow' directive",
2549 config->allow.s[n].s[0]);
2550 /* This won't ever become fatal - eventually 'allow' will be
2553 case DB_LOCK_DEADLOCK:
2554 return DB_LOCK_DEADLOCK;
2560 /** @brief Read old 'allow' directives and copy them to the users database */
2561 void trackdb_old_users(void) {
2565 WITH_TRANSACTION(trackdb_old_users_tid(tid));
2568 /** @brief Create a root user in the user database if there is none */
2569 void trackdb_create_root(void) {
2574 /* Choose a new root password */
2575 gcry_randomize(pwbin, sizeof pwbin, GCRY_STRONG_RANDOM);
2576 pw = mime_to_base64(pwbin, sizeof pwbin);
2577 /* Create the root user if it does not exist */
2578 WITH_TRANSACTION(create_user("root", pw, "all",
2579 0/*email*/, 0/*confirmation*/,
2580 tid, DB_NOOVERWRITE));
2582 info("created root user");
2585 /** @brief Find a user's password from the database
2586 * @param user Username
2587 * @return Password or NULL
2589 * Only works if running as a user that can read the database!
2591 * If the user exists but has no password, "" is returned.
2593 const char *trackdb_get_password(const char *user) {
2596 const char *password;
2598 WITH_TRANSACTION(trackdb_getdata(trackdb_usersdb, user, &k, tid));
2601 password = kvp_get(k, "password");
2602 return password ? password : "";
2605 /** @brief Add a new user
2606 * @param user Username
2607 * @param password Password or NULL
2608 * @param rights Initial rights
2609 * @param email Email address or NULL
2610 * @param confirmation Confirmation string or NULL
2611 * @return 0 on success, non-0 on error
2613 int trackdb_adduser(const char *user,
2614 const char *password,
2617 const char *confirmation) {
2620 WITH_TRANSACTION(create_user(user, password, rights, email, confirmation,
2621 tid, DB_NOOVERWRITE));
2623 error(0, "cannot create user '%s' because they already exist", user);
2627 info("created user '%s' with rights '%s' and email address '%s'",
2628 user, rights, email);
2630 info("created user '%s' with rights '%s'", user, rights);
2635 /** @brief Delete a user
2636 * @param user User to delete
2637 * @return 0 on success, non-0 if the user didn't exist anyway
2639 int trackdb_deluser(const char *user) {
2642 WITH_TRANSACTION(trackdb_delkey(trackdb_usersdb, user, tid));
2644 error(0, "cannot delete user '%s' because they do not exist", user);
2647 info("deleted user '%s'", user);
2651 /** @brief Get user information
2652 * @param user User to query
2653 * @return Linked list of user information or NULL if user does not exist
2655 * Every user has at least a @c rights entry so NULL can be used to mean no
2658 struct kvp *trackdb_getuserinfo(const char *user) {
2662 WITH_TRANSACTION(trackdb_getdata(trackdb_usersdb, user, &k, tid));
2669 /** @brief Edit user information
2670 * @param user User to edit
2671 * @param key Key to change
2672 * @param value Value to set, or NULL to remove
2673 * @param tid Transaction ID
2674 * @return 0, DB_LOCK_DEADLOCK or DB_NOTFOUND
2676 static int trackdb_edituserinfo_tid(const char *user, const char *key,
2677 const char *value, DB_TXN *tid) {
2681 if((e = trackdb_getdata(trackdb_usersdb, user, &k, tid)))
2683 if(!kvp_set(&k, key, value))
2684 return 0; /* no change */
2685 return trackdb_putdata(trackdb_usersdb, user, k, tid, 0);
2688 /** @brief Edit user information
2689 * @param user User to edit
2690 * @param key Key to change
2691 * @param value Value to set, or NULL to remove
2692 * @return 0 on success, non-0 on error
2694 int trackdb_edituserinfo(const char *user,
2695 const char *key, const char *value) {
2698 if(!strcmp(key, "rights")) {
2700 error(0, "cannot remove 'rights' key from user '%s'", user);
2703 if(parse_rights(value, 0, 1)) {
2704 error(0, "invalid rights string");
2707 } else if(!strcmp(key, "email")) {
2709 if(!strchr(value, '@')) {
2710 error(0, "invalid email address '%s' for user '%s'", user, value);
2714 value = 0; /* no email -> remove key */
2715 } else if(!strcmp(key, "created")) {
2716 error(0, "cannot change creation date for user '%s'", user);
2718 } else if(strcmp(key, "password")
2719 && !strcmp(key, "confirmation")) {
2720 error(0, "unknown user info key '%s' for user '%s'", key, user);
2723 WITH_TRANSACTION(trackdb_edituserinfo_tid(user, key, value, tid));
2725 error(0, "unknown user '%s'", user);
2731 /** @brief List all users
2732 * @return NULL-terminated list of users
2734 char **trackdb_listusers(void) {
2739 WITH_TRANSACTION(trackdb_listkeys(trackdb_usersdb, v, tid));
2743 /** @brief Confirm a user registration
2744 * @param user Username
2745 * @param confirmation Confirmation string
2746 * @param rightsp Where to put user rights
2747 * @param tid Transaction ID
2748 * @return 0 on success, non-0 on error
2750 static int trackdb_confirm_tid(const char *user, const char *confirmation,
2751 rights_type *rightsp,
2753 const char *stored_confirmation;
2758 if((e = trackdb_getdata(trackdb_usersdb, user, &k, tid)))
2760 if(!(stored_confirmation = kvp_get(k, "confirmation"))) {
2761 error(0, "already confirmed user '%s'", user);
2762 /* DB claims -30,800 to -30,999 so -1 should be a safe bet */
2765 if(!(rights = kvp_get(k, "rights"))) {
2766 error(0, "no rights for unconfirmed user '%s'", user);
2769 if(parse_rights(rights, rightsp, 1))
2771 if(strcmp(confirmation, stored_confirmation)) {
2772 error(0, "wrong confirmation string for user '%s'", user);
2776 kvp_set(&k, "confirmation", 0);
2777 return trackdb_putdata(trackdb_usersdb, user, k, tid, 0);
2780 /** @brief Confirm a user registration
2781 * @param user Username
2782 * @param confirmation Confirmation string
2783 * @param rightsp Where to put user rights
2784 * @return 0 on success, non-0 on error
2786 int trackdb_confirm(const char *user, const char *confirmation,
2787 rights_type *rightsp) {
2790 WITH_TRANSACTION(trackdb_confirm_tid(user, confirmation, rightsp, tid));
2793 info("registration confirmed for user '%s'", user);
2796 error(0, "confirmation for nonexistent user '%s'", user);
2798 default: /* already reported */
2808 indent-tabs-mode:nil