2 * This file is part of DisOrder.
3 * Copyright (C) 2004-2009 Richard Kettlewell
4 * Portions copyright (C) 2007 Mark Wooding
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 /** @file lib/configuration.c
20 * @brief Configuration file support
26 #include <sys/types.h>
37 #include "configuration.h"
43 #include "inputline.h"
53 /** @brief Path to config file
55 * set_configfile() sets the deafult if it is null.
59 /** @brief Read user configuration
61 * If clear, the user-specific configuration is not read.
63 int config_per_user = 1;
65 /** @brief Table of audio APIs
67 * Only set in server processes.
69 const struct uaudio *const *config_uaudio_apis;
71 /** @brief Config file parser state */
73 /** @brief Filename */
76 /** @brief Line number */
79 /** @brief Configuration object under construction */
80 struct config *config;
83 /** @brief Current configuration */
84 struct config *config;
86 /** @brief One configuration item */
88 /** @brief Name as it appears in the config file */
91 /** @brief Offset in @ref config structure */
94 /** @brief Pointer to item type */
95 const struct conftype *type;
97 /** @brief Pointer to item-specific validation routine
98 * @param cs Configuration state
99 * @param nvec Length of (proposed) new value
100 * @param vec Elements of new value
101 * @return 0 on success, non-0 on error
103 * The validate function should report any error it detects.
105 int (*validate)(const struct config_state *cs,
106 int nvec, char **vec);
109 /** @brief Type of a configuration item */
111 /** @brief Pointer to function to set item
112 * @param cs Configuration state
113 * @param whoami Configuration item to set
114 * @param nvec Length of new value
115 * @param vec New value
116 * @return 0 on success, non-0 on error
118 int (*set)(const struct config_state *cs,
119 const struct conf *whoami,
120 int nvec, char **vec);
122 /** @brief Pointer to function to free item
123 * @param c Configuration structure to free an item of
124 * @param whoami Configuration item to free
126 void (*free)(struct config *c, const struct conf *whoami);
129 /** @brief Compute the address of an item */
130 #define ADDRESS(C, TYPE) ((TYPE *)((char *)(C) + whoami->offset))
131 /** @brief Return the value of an item */
132 #define VALUE(C, TYPE) (*ADDRESS(C, TYPE))
134 static int stringlist_compare(const struct stringlist *a,
135 const struct stringlist *b);
136 static int namepartlist_compare(const struct namepartlist *a,
137 const struct namepartlist *b);
139 static int set_signal(const struct config_state *cs,
140 const struct conf *whoami,
141 int nvec, char **vec) {
145 error(0, "%s:%d: '%s' requires one argument",
146 cs->path, cs->line, whoami->name);
149 if((n = find_signal(vec[0])) == -1) {
150 error(0, "%s:%d: unknown signal '%s'",
151 cs->path, cs->line, vec[0]);
154 VALUE(cs->config, int) = n;
158 static int set_collections(const struct config_state *cs,
159 const struct conf *whoami,
160 int nvec, char **vec) {
161 struct collectionlist *cl;
162 const char *root, *encoding, *module;
181 error(0, "%s:%d: '%s' requires at least one argument",
182 cs->path, cs->line, whoami->name);
185 error(0, "%s:%d: '%s' requires at most three arguments",
186 cs->path, cs->line, whoami->name);
189 /* Sanity check root */
191 error(0, "%s:%d: collection root must start with '/'",
195 if(root[1] && root[strlen(root)-1] == '/') {
196 error(0, "%s:%d: collection root must not end with '/'",
204 encoding = nl_langinfo(CODESET);
205 cl = ADDRESS(cs->config, struct collectionlist);
207 cl->s = xrealloc(cl->s, cl->n * sizeof (struct collection));
208 cl->s[cl->n - 1].module = xstrdup(module);
209 cl->s[cl->n - 1].encoding = xstrdup(encoding);
210 cl->s[cl->n - 1].root = xstrdup(root);
214 static int set_boolean(const struct config_state *cs,
215 const struct conf *whoami,
216 int nvec, char **vec) {
220 error(0, "%s:%d: '%s' takes only one argument",
221 cs->path, cs->line, whoami->name);
224 if(!strcmp(vec[0], "yes")) state = 1;
225 else if(!strcmp(vec[0], "no")) state = 0;
227 error(0, "%s:%d: argument to '%s' must be 'yes' or 'no'",
228 cs->path, cs->line, whoami->name);
231 VALUE(cs->config, int) = state;
235 static int set_string(const struct config_state *cs,
236 const struct conf *whoami,
237 int nvec, char **vec) {
239 error(0, "%s:%d: '%s' takes only one argument",
240 cs->path, cs->line, whoami->name);
243 VALUE(cs->config, char *) = xstrdup(vec[0]);
247 static int set_stringlist(const struct config_state *cs,
248 const struct conf *whoami,
249 int nvec, char **vec) {
251 struct stringlist *sl;
253 sl = ADDRESS(cs->config, struct stringlist);
255 for(n = 0; n < nvec; ++n) {
257 sl->s = xrealloc(sl->s, (sl->n * sizeof (char *)));
258 sl->s[sl->n - 1] = xstrdup(vec[n]);
263 static int set_integer(const struct config_state *cs,
264 const struct conf *whoami,
265 int nvec, char **vec) {
269 error(0, "%s:%d: '%s' takes only one argument",
270 cs->path, cs->line, whoami->name);
273 if(xstrtol(ADDRESS(cs->config, long), vec[0], &e, 0)) {
274 error(errno, "%s:%d: converting integer", cs->path, cs->line);
278 error(0, "%s:%d: invalid integer syntax", cs->path, cs->line);
284 static int set_stringlist_accum(const struct config_state *cs,
285 const struct conf *whoami,
286 int nvec, char **vec) {
288 struct stringlist *s;
289 struct stringlistlist *sll;
291 sll = ADDRESS(cs->config, struct stringlistlist);
297 sll->s = xrealloc(sll->s, (sll->n * sizeof (struct stringlist)));
298 s = &sll->s[sll->n - 1];
300 s->s = xmalloc((nvec + 1) * sizeof (char *));
301 for(n = 0; n < nvec; ++n)
302 s->s[n] = xstrdup(vec[n]);
306 static int set_string_accum(const struct config_state *cs,
307 const struct conf *whoami,
308 int nvec, char **vec) {
310 struct stringlist *sl;
312 sl = ADDRESS(cs->config, struct stringlist);
317 for(n = 0; n < nvec; ++n) {
319 sl->s = xrealloc(sl->s, (sl->n * sizeof (char *)));
320 sl->s[sl->n - 1] = xstrdup(vec[n]);
325 static int set_restrict(const struct config_state *cs,
326 const struct conf *whoami,
327 int nvec, char **vec) {
331 static const struct restriction {
335 { "remove", RESTRICT_REMOVE },
336 { "scratch", RESTRICT_SCRATCH },
337 { "move", RESTRICT_MOVE },
340 for(n = 0; n < nvec; ++n) {
341 if((i = TABLE_FIND(restrictions, name, vec[n])) < 0) {
342 error(0, "%s:%d: invalid restriction '%s'",
343 cs->path, cs->line, vec[n]);
346 r |= restrictions[i].bit;
348 VALUE(cs->config, unsigned) = r;
352 static int parse_sample_format(const struct config_state *cs,
353 struct stream_header *format,
354 int nvec, char **vec) {
359 error(0, "%s:%d: wrong number of arguments", cs->path, cs->line);
362 if(xstrtol(&t, p, &p, 0)) {
363 error(errno, "%s:%d: converting bits-per-sample", cs->path, cs->line);
366 if(t != 8 && t != 16) {
367 error(0, "%s:%d: bad bite-per-sample (%ld)", cs->path, cs->line, t);
370 if(format) format->bits = t;
372 case 'l': case 'L': t = ENDIAN_LITTLE; p++; break;
373 case 'b': case 'B': t = ENDIAN_BIG; p++; break;
374 default: t = ENDIAN_NATIVE; break;
376 if(format) format->endian = t;
378 error(errno, "%s:%d: expected `/' after bits-per-sample",
383 if(xstrtol(&t, p, &p, 0)) {
384 error(errno, "%s:%d: converting sample-rate", cs->path, cs->line);
387 if(t < 1 || t > INT_MAX) {
388 error(0, "%s:%d: silly sample-rate (%ld)", cs->path, cs->line, t);
391 if(format) format->rate = t;
393 error(0, "%s:%d: expected `/' after sample-rate",
398 if(xstrtol(&t, p, &p, 0)) {
399 error(errno, "%s:%d: converting channels", cs->path, cs->line);
403 error(0, "%s:%d: silly number (%ld) of channels", cs->path, cs->line, t);
406 if(format) format->channels = t;
408 error(0, "%s:%d: junk after channels", cs->path, cs->line);
414 static int set_sample_format(const struct config_state *cs,
415 const struct conf *whoami,
416 int nvec, char **vec) {
417 return parse_sample_format(cs, ADDRESS(cs->config, struct stream_header),
421 static int set_namepart(const struct config_state *cs,
422 const struct conf *whoami,
423 int nvec, char **vec) {
424 struct namepartlist *npl = ADDRESS(cs->config, struct namepartlist);
431 error(0, "%s:%d: namepart needs at least 3 arguments", cs->path, cs->line);
435 error(0, "%s:%d: namepart needs at most 5 arguments", cs->path, cs->line);
438 reflags = nvec >= 5 ? regsub_flags(vec[4]) : 0;
439 if(!(re = pcre_compile(vec[1],
441 |regsub_compile_options(reflags),
442 &errstr, &erroffset, 0))) {
443 error(0, "%s:%d: error compiling regexp /%s/: %s (offset %d)",
444 cs->path, cs->line, vec[1], errstr, erroffset);
447 npl->s = xrealloc(npl->s, (npl->n + 1) * sizeof (struct namepart));
448 npl->s[npl->n].part = xstrdup(vec[0]);
449 npl->s[npl->n].re = re;
450 npl->s[npl->n].res = xstrdup(vec[1]);
451 npl->s[npl->n].replace = xstrdup(vec[2]);
452 npl->s[npl->n].context = xstrdup(vec[3]);
453 npl->s[npl->n].reflags = reflags;
455 /* XXX a bit of a bodge; relies on there being very few parts. */
456 for(n = 0; (n < cs->config->nparts
457 && strcmp(cs->config->parts[n], vec[0])); ++n)
459 if(n >= cs->config->nparts) {
460 cs->config->parts = xrealloc(cs->config->parts,
461 (cs->config->nparts + 1) * sizeof (char *));
462 cs->config->parts[cs->config->nparts++] = xstrdup(vec[0]);
467 static int set_transform(const struct config_state *cs,
468 const struct conf *whoami,
469 int nvec, char **vec) {
470 struct transformlist *tl = ADDRESS(cs->config, struct transformlist);
477 error(0, "%s:%d: transform needs at least 3 arguments", cs->path, cs->line);
481 error(0, "%s:%d: transform needs at most 5 arguments", cs->path, cs->line);
484 reflags = (nvec >= 5 ? regsub_flags(vec[4]) : 0);
485 if(!(re = pcre_compile(vec[1],
487 |regsub_compile_options(reflags),
488 &errstr, &erroffset, 0))) {
489 error(0, "%s:%d: error compiling regexp /%s/: %s (offset %d)",
490 cs->path, cs->line, vec[1], errstr, erroffset);
493 tl->t = xrealloc(tl->t, (tl->n + 1) * sizeof (struct namepart));
494 tl->t[tl->n].type = xstrdup(vec[0]);
495 tl->t[tl->n].context = xstrdup(vec[3] ? vec[3] : "*");
496 tl->t[tl->n].re = re;
497 tl->t[tl->n].replace = xstrdup(vec[2]);
498 tl->t[tl->n].flags = reflags;
503 static int set_rights(const struct config_state *cs,
504 const struct conf *whoami,
505 int nvec, char **vec) {
507 error(0, "%s:%d: '%s' requires one argument",
508 cs->path, cs->line, whoami->name);
511 if(parse_rights(vec[0], 0, 1)) {
512 error(0, "%s:%d: invalid rights string '%s'",
513 cs->path, cs->line, vec[0]);
516 *ADDRESS(cs->config, char *) = vec[0];
520 static int set_netaddress(const struct config_state *cs,
521 const struct conf *whoami,
522 int nvec, char **vec) {
523 struct netaddress *na = ADDRESS(cs->config, struct netaddress);
525 if(netaddress_parse(na, nvec, vec)) {
526 error(0, "%s:%d: invalid network address", cs->path, cs->line);
534 static void free_none(struct config attribute((unused)) *c,
535 const struct conf attribute((unused)) *whoami) {
538 static void free_string(struct config *c,
539 const struct conf *whoami) {
540 xfree(VALUE(c, char *));
541 VALUE(c, char *) = 0;
544 static void free_stringlist(struct config *c,
545 const struct conf *whoami) {
547 struct stringlist *sl = ADDRESS(c, struct stringlist);
549 for(n = 0; n < sl->n; ++n)
554 static void free_stringlistlist(struct config *c,
555 const struct conf *whoami) {
557 struct stringlistlist *sll = ADDRESS(c, struct stringlistlist);
558 struct stringlist *sl;
560 for(n = 0; n < sll->n; ++n) {
562 for(m = 0; m < sl->n; ++m)
569 static void free_collectionlist(struct config *c,
570 const struct conf *whoami) {
571 struct collectionlist *cll = ADDRESS(c, struct collectionlist);
572 struct collection *cl;
575 for(n = 0; n < cll->n; ++n) {
584 static void free_namepartlist(struct config *c,
585 const struct conf *whoami) {
586 struct namepartlist *npl = ADDRESS(c, struct namepartlist);
590 for(n = 0; n < npl->n; ++n) {
593 pcre_free(np->re); /* ...whatever pcre_free is set to. */
601 static void free_transformlist(struct config *c,
602 const struct conf *whoami) {
603 struct transformlist *tl = ADDRESS(c, struct transformlist);
607 for(n = 0; n < tl->n; ++n) {
610 pcre_free(t->re); /* ...whatever pcre_free is set to. */
617 static void free_netaddress(struct config *c,
618 const struct conf *whoami) {
619 struct netaddress *na = ADDRESS(c, struct netaddress);
624 /* configuration types */
626 static const struct conftype
627 type_signal = { set_signal, free_none },
628 type_collections = { set_collections, free_collectionlist },
629 type_boolean = { set_boolean, free_none },
630 type_string = { set_string, free_string },
631 type_stringlist = { set_stringlist, free_stringlist },
632 type_integer = { set_integer, free_none },
633 type_stringlist_accum = { set_stringlist_accum, free_stringlistlist },
634 type_string_accum = { set_string_accum, free_stringlist },
635 type_sample_format = { set_sample_format, free_none },
636 type_restrict = { set_restrict, free_none },
637 type_namepart = { set_namepart, free_namepartlist },
638 type_transform = { set_transform, free_transformlist },
639 type_netaddress = { set_netaddress, free_netaddress },
640 type_rights = { set_rights, free_none };
642 /* specific validation routine */
644 /** @brief Perform a test on a filename
645 * @param test Test function to call on mode bits
646 * @param what Type of file sought
648 * If @p test returns 0 then the file is not a @p what and an error
649 * is reported and -1 is returned.
651 #define VALIDATE_FILE(test, what) do { \
655 for(n = 0; n < nvec; ++n) { \
656 if(stat(vec[n], &sb) < 0) { \
657 error(errno, "%s:%d: %s", cs->path, cs->line, vec[n]); \
660 if(!test(sb.st_mode)) { \
661 error(0, "%s:%d: %s is not a %s", \
662 cs->path, cs->line, vec[n], what); \
668 /** @brief Validate an absolute path
669 * @param cs Configuration state
670 * @param nvec Length of (proposed) new value
671 * @param vec Elements of new value
672 * @return 0 on success, non-0 on error
674 static int validate_isabspath(const struct config_state *cs,
675 int nvec, char **vec) {
678 for(n = 0; n < nvec; ++n)
679 if(vec[n][0] != '/') {
680 error(errno, "%s:%d: %s: not an absolute path",
681 cs->path, cs->line, vec[n]);
687 /** @brief Validate an existing directory
688 * @param cs Configuration state
689 * @param nvec Length of (proposed) new value
690 * @param vec Elements of new value
691 * @return 0 on success, non-0 on error
693 static int validate_isdir(const struct config_state *cs,
694 int nvec, char **vec) {
695 VALIDATE_FILE(S_ISDIR, "directory");
699 /** @brief Validate an existing regular file
700 * @param cs Configuration state
701 * @param nvec Length of (proposed) new value
702 * @param vec Elements of new value
703 * @return 0 on success, non-0 on error
705 static int validate_isreg(const struct config_state *cs,
706 int nvec, char **vec) {
707 VALIDATE_FILE(S_ISREG, "regular file");
711 /** @brief Validate a player pattern
712 * @param cs Configuration state
713 * @param nvec Length of (proposed) new value
714 * @param vec Elements of new value
715 * @return 0 on success, non-0 on error
717 static int validate_player(const struct config_state *cs,
719 char attribute((unused)) **vec) {
721 error(0, "%s:%d: should be at least 'player PATTERN MODULE'",
728 /** @brief Validate a track length pattern
729 * @param cs Configuration state
730 * @param nvec Length of (proposed) new value
731 * @param vec Elements of new value
732 * @return 0 on success, non-0 on error
734 static int validate_tracklength(const struct config_state *cs,
736 char attribute((unused)) **vec) {
738 error(0, "%s:%d: should be at least 'tracklength PATTERN MODULE'",
745 /** @brief Validate an allow directive
746 * @param cs Configuration state
747 * @param nvec Length of (proposed) new value
748 * @param vec Elements of new value
749 * @return 0 on success, non-0 on error
751 * Obsolete - only used for parsing legacy configuration.
753 static int validate_allow(const struct config_state *cs,
755 char attribute((unused)) **vec) {
757 error(0, "%s:%d: must be 'allow NAME PASS'", cs->path, cs->line);
763 /** @brief Validate a non-negative (@c long) integer
764 * @param cs Configuration state
765 * @param nvec Length of (proposed) new value
766 * @param vec Elements of new value
767 * @return 0 on success, non-0 on error
769 static int validate_non_negative(const struct config_state *cs,
770 int nvec, char **vec) {
774 error(0, "%s:%d: missing argument", cs->path, cs->line);
778 error(0, "%s:%d: too many arguments", cs->path, cs->line);
781 if(xstrtol(&n, vec[0], 0, 0)) {
782 error(0, "%s:%d: %s", cs->path, cs->line, strerror(errno));
786 error(0, "%s:%d: must not be negative", cs->path, cs->line);
792 /** @brief Validate a positive (@c long) integer
793 * @param cs Configuration state
794 * @param nvec Length of (proposed) new value
795 * @param vec Elements of new value
796 * @return 0 on success, non-0 on error
798 static int validate_positive(const struct config_state *cs,
799 int nvec, char **vec) {
803 error(0, "%s:%d: missing argument", cs->path, cs->line);
807 error(0, "%s:%d: too many arguments", cs->path, cs->line);
810 if(xstrtol(&n, vec[0], 0, 0)) {
811 error(0, "%s:%d: %s", cs->path, cs->line, strerror(errno));
815 error(0, "%s:%d: must be positive", cs->path, cs->line);
821 /** @brief Validate a system username
822 * @param cs Configuration state
823 * @param nvec Length of (proposed) new value
824 * @param vec Elements of new value
825 * @return 0 on success, non-0 on error
827 static int validate_isauser(const struct config_state *cs,
828 int attribute((unused)) nvec,
832 if(!(pw = getpwnam(vec[0]))) {
833 error(0, "%s:%d: no such user as '%s'", cs->path, cs->line, vec[0]);
839 /** @brief Validate a sample format string
840 * @param cs Configuration state
841 * @param nvec Length of (proposed) new value
842 * @param vec Elements of new value
843 * @return 0 on success, non-0 on error
845 static int validate_sample_format(const struct config_state *cs,
846 int attribute((unused)) nvec,
848 return parse_sample_format(cs, 0, nvec, vec);
851 /** @brief Validate anything
852 * @param cs Configuration state
853 * @param nvec Length of (proposed) new value
854 * @param vec Elements of new value
857 static int validate_any(const struct config_state attribute((unused)) *cs,
858 int attribute((unused)) nvec,
859 char attribute((unused)) **vec) {
863 /** @brief Validate a URL
864 * @param cs Configuration state
865 * @param nvec Length of (proposed) new value
866 * @param vec Elements of new value
867 * @return 0 on success, non-0 on error
871 static int validate_url(const struct config_state attribute((unused)) *cs,
872 int attribute((unused)) nvec,
876 /* absoluteURI = scheme ":" ( hier_part | opaque_part )
877 scheme = alpha *( alpha | digit | "+" | "-" | "." ) */
879 n = strspn(s, ("abcdefghijklmnopqrstuvwxyz"
880 "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
883 error(0, "%s:%d: invalid url '%s'", cs->path, cs->line, vec[0]);
886 if(!strncmp(s, "http:", 5)
887 || !strncmp(s, "https:", 6)) {
889 /* we only do a rather cursory check */
890 if(strncmp(s, "//", 2)) {
891 error(0, "%s:%d: invalid url '%s'", cs->path, cs->line, vec[0]);
898 /** @brief Validate an alias pattern
899 * @param cs Configuration state
900 * @param nvec Length of (proposed) new value
901 * @param vec Elements of new value
902 * @return 0 on success, non-0 on error
904 static int validate_alias(const struct config_state *cs,
908 int in_brackets = 0, c;
911 error(0, "%s:%d: missing argument", cs->path, cs->line);
915 error(0, "%s:%d: too many arguments", cs->path, cs->line);
919 while((c = (unsigned char)*s++)) {
923 else if(!isalnum(c)) {
924 error(0, "%s:%d: invalid part name in alias expansion in '%s'",
925 cs->path, cs->line, vec[0]);
933 } else if(c == '\\') {
934 if(!(c = (unsigned char)*s++)) {
935 error(0, "%s:%d: unterminated escape in alias expansion in '%s'",
936 cs->path, cs->line, vec[0]);
938 } else if(c != '\\' && c != '{') {
939 error(0, "%s:%d: invalid escape in alias expansion in '%s'",
940 cs->path, cs->line, vec[0]);
948 error(0, "%s:%d: unterminated part name in alias expansion in '%s'",
949 cs->path, cs->line, vec[0]);
955 /** @brief Validate a hash algorithm name
956 * @param cs Configuration state
957 * @param nvec Length of (proposed) new value
958 * @param vec Elements of new value
959 * @return 0 on success, non-0 on error
961 static int validate_algo(const struct config_state attribute((unused)) *cs,
965 error(0, "%s:%d: invalid algorithm specification", cs->path, cs->line);
968 if(!valid_authhash(vec[0])) {
969 error(0, "%s:%d: unsuported algorithm '%s'", cs->path, cs->line, vec[0]);
975 /** @brief Validate a playback backend name
976 * @param cs Configuration state
977 * @param nvec Length of (proposed) new value
978 * @param vec Elements of new value
979 * @return 0 on success, non-0 on error
981 static int validate_backend(const struct config_state attribute((unused)) *cs,
986 error(0, "%s:%d: invalid sound API specification", cs->path, cs->line);
989 if(!strcmp(vec[0], "network")) {
990 error(0, "'api network' is deprecated; use 'api rtp'");
993 if(config_uaudio_apis) {
994 for(n = 0; config_uaudio_apis[n]; ++n)
995 if(!strcmp(vec[0], config_uaudio_apis[n]->name))
997 error(0, "%s:%d: unrecognized sound API '%s'", cs->path, cs->line, vec[0]);
1000 /* In non-server processes we have no idea what's valid */
1004 /** @brief Validate a pause mode string
1005 * @param cs Configuration state
1006 * @param nvec Length of (proposed) new value
1007 * @param vec Elements of new value
1008 * @return 0 on success, non-0 on error
1010 static int validate_pausemode(const struct config_state attribute((unused)) *cs,
1013 if(nvec == 1 && (!strcmp(vec[0], "silence") || !strcmp(vec[0], "suspend")))
1015 error(0, "%s:%d: invalid pause mode", cs->path, cs->line);
1019 /** @brief Validate a destination network address
1020 * @param cs Configuration state
1021 * @param nvec Length of (proposed) new value
1022 * @param vec Elements of new value
1023 * @return 0 on success, non-0 on error
1025 * By a destination address, it is meant that it must not be a wildcard
1028 static int validate_destaddr(const struct config_state attribute((unused)) *cs,
1031 struct netaddress na[1];
1033 if(netaddress_parse(na, nvec, vec)) {
1034 error(0, "%s:%d: invalid network address", cs->path, cs->line);
1038 error(0, "%s:%d: destination address required", cs->path, cs->line);
1044 /** @brief Item name and and offset */
1045 #define C(x) #x, offsetof(struct config, x)
1046 /** @brief Item name and and offset */
1047 #define C2(x,y) #x, offsetof(struct config, y)
1049 /** @brief All configuration items */
1050 static const struct conf conf[] = {
1051 { C(alias), &type_string, validate_alias },
1052 { C(allow), &type_stringlist_accum, validate_allow },
1053 { C(api), &type_string, validate_backend },
1054 { C(authorization_algorithm), &type_string, validate_algo },
1055 { C(broadcast), &type_netaddress, validate_destaddr },
1056 { C(broadcast_from), &type_netaddress, validate_any },
1057 { C(channel), &type_string, validate_any },
1058 { C(checkpoint_kbyte), &type_integer, validate_non_negative },
1059 { C(checkpoint_min), &type_integer, validate_non_negative },
1060 { C(collection), &type_collections, validate_any },
1061 { C(connect), &type_netaddress, validate_destaddr },
1062 { C(cookie_login_lifetime), &type_integer, validate_positive },
1063 { C(cookie_key_lifetime), &type_integer, validate_positive },
1064 { C(dbversion), &type_integer, validate_positive },
1065 { C(default_rights), &type_rights, validate_any },
1066 { C(device), &type_string, validate_any },
1067 { C(gap), &type_integer, validate_non_negative },
1068 { C(history), &type_integer, validate_positive },
1069 { C(home), &type_string, validate_isabspath },
1070 { C(listen), &type_netaddress, validate_any },
1071 { C(lock), &type_boolean, validate_any },
1072 { C(mail_sender), &type_string, validate_any },
1073 { C(mixer), &type_string, validate_any },
1074 { C(multicast_loop), &type_boolean, validate_any },
1075 { C(multicast_ttl), &type_integer, validate_non_negative },
1076 { C(namepart), &type_namepart, validate_any },
1077 { C(new_bias), &type_integer, validate_positive },
1078 { C(new_bias_age), &type_integer, validate_positive },
1079 { C(new_max), &type_integer, validate_positive },
1080 { C2(nice, nice_rescan), &type_integer, validate_non_negative },
1081 { C(nice_rescan), &type_integer, validate_non_negative },
1082 { C(nice_server), &type_integer, validate_any },
1083 { C(nice_speaker), &type_integer, validate_any },
1084 { C(noticed_history), &type_integer, validate_positive },
1085 { C(password), &type_string, validate_any },
1086 { C(pause_mode), &type_string, validate_pausemode },
1087 { C(player), &type_stringlist_accum, validate_player },
1088 { C(playlist_lock_timeout), &type_integer, validate_positive },
1089 { C(playlist_max) , &type_integer, validate_positive },
1090 { C(plugins), &type_string_accum, validate_isdir },
1091 { C(prefsync), &type_integer, validate_positive },
1092 { C(queue_pad), &type_integer, validate_positive },
1093 { C(replay_min), &type_integer, validate_non_negative },
1094 { C(refresh), &type_integer, validate_positive },
1095 { C(reminder_interval), &type_integer, validate_positive },
1096 { C(remote_userman), &type_boolean, validate_any },
1097 { C2(restrict, restrictions), &type_restrict, validate_any },
1098 { C(rtp_delay_threshold), &type_integer, validate_positive },
1099 { C(sample_format), &type_sample_format, validate_sample_format },
1100 { C(scratch), &type_string_accum, validate_isreg },
1101 { C(sendmail), &type_string, validate_isabspath },
1102 { C(short_display), &type_integer, validate_positive },
1103 { C(signal), &type_signal, validate_any },
1104 { C(smtp_server), &type_string, validate_any },
1105 { C(sox_generation), &type_integer, validate_non_negative },
1106 { C2(speaker_backend, api), &type_string, validate_backend },
1107 { C(speaker_command), &type_string, validate_any },
1108 { C(stopword), &type_string_accum, validate_any },
1109 { C(templates), &type_string_accum, validate_isdir },
1110 { C(tracklength), &type_stringlist_accum, validate_tracklength },
1111 { C(transform), &type_transform, validate_any },
1112 { C(trust), &type_string_accum, validate_any },
1113 { C(url), &type_string, validate_url },
1114 { C(user), &type_string, validate_isauser },
1115 { C(username), &type_string, validate_any },
1118 /** @brief Find a configuration item's definition by key */
1119 static const struct conf *find(const char *key) {
1122 if((n = TABLE_FIND(conf, name, key)) < 0)
1127 /** @brief Set a new configuration value
1128 * @param cs Configuration state
1129 * @param nvec Length of @p vec
1130 * @param vec Name and new value
1131 * @return 0 on success, non-0 on error.
1133 * @c vec[0] is the name, the rest is the value.
1135 static int config_set(const struct config_state *cs,
1136 int nvec, char **vec) {
1137 const struct conf *which;
1139 D(("config_set %s", vec[0]));
1140 if(!(which = find(vec[0]))) {
1141 error(0, "%s:%d: unknown configuration key '%s'",
1142 cs->path, cs->line, vec[0]);
1145 return (which->validate(cs, nvec - 1, vec + 1)
1146 || which->type->set(cs, which, nvec - 1, vec + 1));
1149 /** @brief Set a configuration item from parameters
1150 * @param cs Configuration state
1151 * @param which Item to set
1152 * @param ... Value as strings, terminated by (char *)NULL
1153 * @return 0 on success, non-0 on error
1155 static int config_set_args(const struct config_state *cs,
1156 const char *which, ...) {
1162 vector_append(v, (char *)which);
1163 va_start(ap, which);
1164 while((s = va_arg(ap, char *)))
1165 vector_append(v, s);
1167 vector_terminate(v);
1168 return config_set(cs, v->nvec, v->vec);
1171 /** @brief Error callback used by config_include()
1172 * @param msg Error message
1173 * @param u User data (@ref config_state)
1175 static void config_error(const char *msg, void *u) {
1176 const struct config_state *cs = u;
1178 error(0, "%s:%d: %s", cs->path, cs->line, msg);
1181 /** @brief Include a file by name
1182 * @param c Configuration to update
1183 * @param path Path to read
1184 * @return 0 on success, non-0 on error
1186 static int config_include(struct config *c, const char *path) {
1188 char *buffer, *inputbuffer, **vec;
1190 struct config_state cs;
1195 D(("%s: reading configuration", path));
1196 if(!(fp = fopen(path, "r"))) {
1197 error(errno, "error opening %s", path);
1200 while(!inputline(path, fp, &inputbuffer, '\n')) {
1202 if(!(buffer = mb2utf8(inputbuffer))) {
1203 error(errno, "%s:%d: cannot convert to UTF-8", cs.path, cs.line);
1209 if(!(vec = split(buffer, &n, SPLIT_COMMENTS|SPLIT_QUOTES,
1210 config_error, &cs))) {
1216 /* 'include' is special-cased */
1217 if(!strcmp(vec[0], "include")) {
1219 error(0, "%s:%d: must be 'include PATH'", cs.path, cs.line);
1222 config_include(c, vec[1]);
1224 ret |= config_set(&cs, n, vec);
1226 for(n = 0; vec[n]; ++n) xfree(vec[n]);
1231 error(errno, "error reading %s", path);
1238 /** @brief Default stopword setting */
1239 static const char *const default_stopwords[] = {
1298 #define NDEFAULT_STOPWORDS (sizeof default_stopwords / sizeof *default_stopwords)
1300 /** @brief Default player patterns */
1301 static const char *const default_players[] = {
1307 #define NDEFAULT_PLAYERS (sizeof default_players / sizeof *default_players)
1309 /** @brief Make a new default configuration
1310 * @return New configuration
1312 static struct config *config_default(void) {
1313 struct config *c = xmalloc(sizeof *c);
1314 const char *logname;
1316 struct config_state cs;
1319 cs.path = "<internal>";
1322 /* Strings had better be xstrdup'd as they will get freed at some point. */
1325 c->home = xstrdup(pkgstatedir);
1326 if(!(pw = getpwuid(getuid())))
1327 fatal(0, "cannot determine our username");
1328 logname = pw->pw_name;
1329 c->username = xstrdup(logname);
1332 c->signal = SIGKILL;
1333 c->alias = xstrdup("{/artist}{/album}{/title}{ext}");
1335 c->device = xstrdup("default");
1336 c->nice_rescan = 10;
1337 c->speaker_command = 0;
1338 c->sample_format.bits = 16;
1339 c->sample_format.rate = 44100;
1340 c->sample_format.channels = 2;
1341 c->sample_format.endian = ENDIAN_NATIVE;
1343 c->replay_min = 8 * 3600;
1345 c->multicast_ttl = 1;
1346 c->multicast_loop = 1;
1347 c->authorization_algorithm = xstrdup("sha1");
1348 c->noticed_history = 31;
1349 c->short_display = 32;
1353 c->cookie_login_lifetime = 86400;
1354 c->cookie_key_lifetime = 86400 * 7;
1355 if(sendmail_binary[0] && strcmp(sendmail_binary, "none"))
1356 c->sendmail = xstrdup(sendmail_binary);
1357 c->smtp_server = xstrdup("127.0.0.1");
1359 c->reminder_interval = 600; /* 10m */
1360 c->new_bias_age = 7 * 86400; /* 1 week */
1361 c->new_bias = 4500000; /* 50 times the base weight */
1362 c->sox_generation = DEFAULT_SOX_GENERATION;
1363 c->playlist_max = INT_MAX; /* effectively no limit */
1364 c->playlist_lock_timeout = 10; /* 10s */
1365 /* Default stopwords */
1366 if(config_set(&cs, (int)NDEFAULT_STOPWORDS, (char **)default_stopwords))
1368 /* Default player configuration */
1369 for(n = 0; n < NDEFAULT_PLAYERS; ++n) {
1370 if(config_set_args(&cs, "player",
1371 default_players[n], "execraw", "disorder-decode", (char *)0))
1373 if(config_set_args(&cs, "tracklength",
1374 default_players[n], "disorder-tracklength", (char *)0))
1377 c->broadcast.af = -1;
1378 c->broadcast_from.af = -1;
1384 /** @brief Construct a filename
1385 * @param c Configuration
1386 * @param name Base filename
1387 * @return Full filename
1389 * Usually use config_get_file() instead.
1391 char *config_get_file2(struct config *c, const char *name) {
1394 byte_xasprintf(&s, "%s/%s", c->home, name);
1398 /** @brief Set the default configuration file */
1399 static void set_configfile(void) {
1401 byte_xasprintf(&configfile, "%s/config", pkgconfdir);
1404 /** @brief Free a configuration object
1405 * @param c Configuration to free
1407 * @p c is indeterminate after this function is called.
1409 static void config_free(struct config *c) {
1413 for(n = 0; n < (int)(sizeof conf / sizeof *conf); ++n)
1414 conf[n].type->free(c, &conf[n]);
1415 for(n = 0; n < c->nparts; ++n)
1422 /** @brief Set post-parse defaults
1423 * @param c Configuration to update
1424 * @param server True when running in the server
1426 * If @p server is set then certain parts of the configuration are more
1427 * strictly validated.
1429 static void config_postdefaults(struct config *c,
1431 struct config_state cs;
1432 const struct conf *whoami;
1435 static const char *namepart[][4] = {
1436 { "title", "/([0-9]+ *[-:]? *)?([^/]+)\\.[a-zA-Z0-9]+$", "$2", "display" },
1437 { "title", "/([^/]+)\\.[a-zA-Z0-9]+$", "$1", "sort" },
1438 { "album", "/([^/]+)/[^/]+$", "$1", "*" },
1439 { "artist", "/([^/]+)/[^/]+/[^/]+$", "$1", "*" },
1440 { "ext", "(\\.[a-zA-Z0-9]+)$", "$1", "*" },
1442 #define NNAMEPART (int)(sizeof namepart / sizeof *namepart)
1444 static const char *transform[][5] = {
1445 { "track", "^.*/([0-9]+ *[-:]? *)?([^/]+)\\.[a-zA-Z0-9]+$", "$2", "display", "" },
1446 { "track", "^.*/([^/]+)\\.[a-zA-Z0-9]+$", "$1", "sort", "" },
1447 { "dir", "^.*/([^/]+)$", "$1", "*", "" },
1448 { "dir", "^(the) ([^/]*)", "$2, $1", "sort", "i", },
1449 { "dir", "[[:punct:]]", "", "sort", "g", }
1451 #define NTRANSFORM (int)(sizeof transform / sizeof *transform)
1453 cs.path = "<internal>";
1456 if(!c->namepart.n) {
1457 whoami = find("namepart");
1458 for(n = 0; n < NNAMEPART; ++n)
1459 set_namepart(&cs, whoami, 4, (char **)namepart[n]);
1461 if(!c->transform.n) {
1462 whoami = find("transform");
1463 for(n = 0; n < NTRANSFORM; ++n)
1464 set_transform(&cs, whoami, 5, (char **)transform[n]);
1467 if(c->speaker_command)
1468 c->api = xstrdup("command");
1469 else if(c->broadcast.af != -1)
1470 c->api = xstrdup("rtp");
1471 else if(config_uaudio_apis)
1472 c->api = xstrdup(config_uaudio_apis[0]->name);
1474 c->api = xstrdup("<none>");
1476 if(!strcmp(c->api, "network"))
1477 c->api = xstrdup("rtp");
1479 if(!strcmp(c->api, "command") && !c->speaker_command)
1480 fatal(0, "'api command' but speaker_command is not set");
1481 if((!strcmp(c->api, "rtp")) && c->broadcast.af == -1)
1482 fatal(0, "'api rtp' but broadcast is not set");
1484 /* Override sample format */
1485 if(!strcmp(c->api, "rtp")) {
1486 c->sample_format.rate = 44100;
1487 c->sample_format.channels = 2;
1488 c->sample_format.bits = 16;
1489 c->sample_format.endian = ENDIAN_NATIVE;
1491 if(!strcmp(c->api, "coreaudio")) {
1492 c->sample_format.rate = 44100;
1493 c->sample_format.channels = 2;
1494 c->sample_format.bits = 16;
1495 c->sample_format.endian = ENDIAN_NATIVE;
1497 if(!c->default_rights) {
1498 rights_type r = RIGHTS__MASK & ~(RIGHT_ADMIN|RIGHT_REGISTER
1500 |RIGHT_SCRATCH__MASK
1501 |RIGHT_REMOVE__MASK);
1502 /* The idea is to approximate the meaning of the old 'restrict' directive
1503 * in the default rights if they are not overridden. */
1504 if(c->restrictions & RESTRICT_SCRATCH)
1505 r |= RIGHT_SCRATCH_MINE|RIGHT_SCRATCH_RANDOM;
1507 r |= RIGHT_SCRATCH_ANY;
1508 if(!(c->restrictions & RESTRICT_MOVE))
1509 r |= RIGHT_MOVE_ANY;
1510 if(c->restrictions & RESTRICT_REMOVE)
1511 r |= RIGHT_REMOVE_MINE;
1513 r |= RIGHT_REMOVE_ANY;
1514 c->default_rights = rights_string(r);
1518 /** @brief (Re-)read the config file
1519 * @param server If set, do extra checking
1520 * @param oldconfig Old configuration for compatibility check
1521 * @return 0 on success, non-0 on error
1523 * If @p oldconfig is set, then certain compatibility checks are done between
1524 * the old and new configurations.
1526 int config_read(int server,
1527 const struct config *oldconfig) {
1533 c = config_default();
1534 /* standalone Disobedience installs might not have a global config file */
1535 if(access(configfile, F_OK) == 0)
1536 if(config_include(c, configfile))
1538 /* if we can read the private config file, do */
1539 if((privconf = config_private())
1540 && access(privconf, R_OK) == 0
1541 && config_include(c, privconf))
1544 /* if there's a per-user system config file for this user, read it */
1545 if(config_per_user) {
1546 if(!(pw = getpwuid(getuid())))
1547 fatal(0, "cannot determine our username");
1548 if((privconf = config_usersysconf(pw))
1549 && access(privconf, F_OK) == 0
1550 && config_include(c, privconf))
1553 /* if we have a password file, read it */
1554 if((privconf = config_userconf(0, pw))
1555 && access(privconf, F_OK) == 0
1556 && config_include(c, privconf))
1560 /* install default namepart and transform settings */
1561 config_postdefaults(c, server);
1564 if(strcmp(c->home, oldconfig->home)) {
1565 error(0, "'home' cannot be changed without a restart");
1568 if(strcmp(c->alias, oldconfig->alias)) {
1569 error(0, "'alias' cannot be changed without a restart");
1572 if(strcmp(c->user, oldconfig->user)) {
1573 error(0, "'user' cannot be changed without a restart");
1576 if(c->nice_speaker != oldconfig->nice_speaker) {
1577 error(0, "'nice_speaker' cannot be changed without a restart");
1578 /* ...but we accept the new config anyway */
1580 if(c->nice_server != oldconfig->nice_server) {
1581 error(0, "'nice_server' cannot be changed without a restart");
1582 /* ...but we accept the new config anyway */
1584 if(namepartlist_compare(&c->namepart, &oldconfig->namepart)) {
1585 error(0, "'namepart' settings cannot be changed without a restart");
1588 if(stringlist_compare(&c->stopword, &oldconfig->stopword)) {
1589 error(0, "'stopword' settings cannot be changed without a restart");
1593 error(0, "not installing incompatible new configuration");
1597 /* everything is good so we shall use the new config */
1598 config_free(config);
1599 /* warn about obsolete directives */
1601 error(0, "'restrict' will be removed in a future version");
1603 error(0, "'allow' will be removed in a future version");
1605 error(0, "'trust' will be removed in a future version");
1607 error(0, "'lock' will be removed in a future version");
1609 error(0, "'gap' will be removed in a future version");
1611 error(0, "'prefsync' will be removed in a future version");
1616 /** @brief Return the path to the private configuration file */
1617 char *config_private(void) {
1621 byte_xasprintf(&s, "%s.private", configfile);
1625 /** @brief Return the path to user's personal configuration file */
1626 char *config_userconf(const char *home, const struct passwd *pw) {
1629 if(!home && !pw && !(pw = getpwuid(getuid())))
1630 fatal(0, "cannot determine our username");
1631 byte_xasprintf(&s, "%s/.disorder/passwd", home ? home : pw->pw_dir);
1635 /** @brief Return the path to user-specific system configuration */
1636 char *config_usersysconf(const struct passwd *pw) {
1640 if(!strchr(pw->pw_name, '/')) {
1641 byte_xasprintf(&s, "%s.%s", configfile, pw->pw_name);
1647 /** @brief Get a filename within the home directory
1648 * @param name Relative name
1651 char *config_get_file(const char *name) {
1652 return config_get_file2(config, name);
1655 /** @brief Order two stringlists
1656 * @param a First stringlist
1657 * @param b Second stringlist
1658 * @return <0, 0 or >0 if a<b, a=b or a>b
1660 static int stringlist_compare(const struct stringlist *a,
1661 const struct stringlist *b) {
1664 while(n < a->n && n < b->n) {
1665 if((c = strcmp(a->s[n], b->s[n])))
1671 else if(a->n > b->n)
1677 /** @brief Order two namepart definitions
1678 * @param a First namepart definition
1679 * @param b Second namepart definition
1680 * @return <0, 0 or >0 if a<b, a=b or a>b
1682 static int namepart_compare(const struct namepart *a,
1683 const struct namepart *b) {
1686 if((c = strcmp(a->part, b->part)))
1688 if((c = strcmp(a->res, b->res)))
1690 if((c = strcmp(a->replace, b->replace)))
1692 if((c = strcmp(a->context, b->context)))
1694 if(a->reflags > b->reflags)
1696 if(a->reflags < b->reflags)
1701 /** @brief Order two lists of namepart definitions
1702 * @param a First list of namepart definitions
1703 * @param b Second list of namepart definitions
1704 * @return <0, 0 or >0 if a<b, a=b or a>b
1706 static int namepartlist_compare(const struct namepartlist *a,
1707 const struct namepartlist *b) {
1710 while(n < a->n && n < b->n) {
1711 if((c = namepart_compare(&a->s[n], &b->s[n])))
1717 else if(a->n < b->n)