2 * Copyright (C) 1999-2007 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file mysql_selector.c para_server's mysql-based audio file selector */
9 /** \cond some internal constants */
10 #define MEDIUM_BLOB_SIZE 16777220 /* (2**24 + 4) */
11 #define BLOB_SIZE 65539 /* (2**16 + 3) */
13 #include "server.cmdline.h"
17 #include <mysql/mysql.h>
18 #include <mysql/mysql_version.h>
23 #include "user_list.h"
24 #include "mysql_selector_command_list.h"
26 /** pointer to the shared memory area */
27 extern struct misc_meta_data *mmd;
29 static void *mysql_ptr = NULL;
32 * contains name/replacement pairs used by s_a_r_list()
37 /** the name of the macro */
39 /** the replacement text */
40 const char *replacement;
43 static const struct para_macro mysql_macro_list[] = {
45 .replacement = "(data.%s != '1')"
48 .replacement = "(data.%s = '1')"
51 .replacement = "%sdata.Pic_Id"
54 .replacement = "(data.name like '%s')"
57 .replacement = "%sFLOOR((UNIX_TIMESTAMP(now())"
58 "-UNIX_TIMESTAMP(data.Lastplayed))/60)"
61 .replacement = "%sdata.Numplayed"
68 * simple search and replace routine
70 * \param src source string
71 * \param macro_name the name of the macro
72 * \param replacement the replacement format string
74 * In \p src, replace each occurence of \p macro_name(arg) by the string
75 * determined by the \p replacement format string. \p replacement may (but
76 * needs not) contain a single string conversion specifier (%s) which gets
79 * \return A string in which all matches in \p src are replaced, or \p NULL if
80 * an syntax error was encountered. Caller must free the result.
84 __must_check __malloc static char *s_a_r(const char *src, const char* macro_name,
85 const char *replacement)
92 const char *bufptr = src;
94 if (!macro_name || !replacement || !src)
95 return para_strdup(src);
96 regcomp(&preg, macro_name, 0);
97 while (regexec(&preg, bufptr, nmatch, pmatch, eflags)
99 char *tmp, *arg, *o_bracket, *c_bracket;
101 o_bracket = strchr(bufptr + pmatch[0].rm_so, '(');
102 c_bracket = o_bracket? strchr(o_bracket, ')') : NULL;
105 tmp = para_strdup(bufptr);
106 tmp[pmatch[0].rm_so] = '\0';
107 dest = para_strcat(dest, tmp);
110 arg = para_strdup(o_bracket + 1);
111 arg[c_bracket - o_bracket - 1] = '\0';
112 tmp = make_message(replacement, arg);
114 dest = para_strcat(dest, tmp);
119 dest = para_strcat(dest, bufptr);
120 // PARA_DEBUG_LOG("%s: returning %s\n", __func__, dest);
127 * replace a string according to a list of macros
129 * \param macro_list the array containing a macro/replacement pairs.
130 * \param src the source string
132 * This function just calls s_a_r() for each element of \p macro_list.
134 * \return \p NULL if one of the underlying calls to \p s_a_r returned \p NULL.
135 * Otherwise the completely expanded version of \p src is returned.
137 __must_check __malloc static char *s_a_r_list(const struct para_macro *macro_list,
140 const struct para_macro *mp = macro_list;
141 char *ret = NULL, *tmp = para_strdup(src);
144 ret = s_a_r(tmp, mp->name, mp->replacement);
146 if (!ret) /* syntax error */
151 //PARA_DEBUG_LOG("%s: returning %s\n", __func__, dest);
155 static int real_query(const char *query)
159 PARA_DEBUG_LOG("%s\n", query);
160 if (mysql_real_query(mysql_ptr, query, strlen(query))) {
161 PARA_ERROR_LOG("real_query error (%s)\n",
162 mysql_error(mysql_ptr));
169 * Use open connection given by mysql_ptr to query server. Returns a
170 * result pointer on succes and NULL on errors
172 static struct MYSQL_RES *get_result(const char *query)
176 if (real_query(query) < 0)
178 result = mysql_store_result(mysql_ptr);
180 PARA_ERROR_LOG("%s", "store_result error\n");
184 * write input from fd to dynamically allocated char array,
185 * but maximal max_size byte. Return size.
187 static int fd2buf(int fd, char **buf_ptr, size_t max_size)
189 const size_t chunk_size = 1024;
191 char *buf = para_malloc(size * sizeof(char)), *p = buf;
194 while ((ret = recv_bin_buffer(fd, p, chunk_size)) > 0) {
196 if ((p - buf) + chunk_size >= size) {
200 if (size > max_size) {
204 tmp = para_realloc(buf, size);
219 static char *escape_blob(const char* old, size_t size)
225 new = para_malloc(2 * size * sizeof(char) + 1);
226 mysql_real_escape_string(mysql_ptr, new, old, size);
230 static char *escape_str(const char* old)
232 return escape_blob(old, strlen(old));
235 static char *escaped_basename(const char *name)
237 char *esc, *bn = para_basename(name);
241 esc = escape_str(bn);
249 int com_na(__a_unused int fd, int argc, char *argv[])
255 return -E_MYSQL_SYNTAX;
256 tmp = escape_str(argv[1]);
259 q = make_message("alter table data add %s char(1) "
260 "not null default 0", tmp);
270 int com_da(__a_unused int fd, int argc, char *argv[])
276 return -E_MYSQL_SYNTAX;
277 tmp = escape_str(argv[1]);
280 q = make_message("alter table data drop %s", tmp);
288 static int com_stradd_picadd(int fd, int argc, char *argv[])
290 char *blob = NULL, *esc_blob = NULL, *q = NULL, *tmp = NULL;
291 const char *fmt, *del_fmt;
292 int ret, stradd = strcmp(argv[0], "picadd");
296 return -E_MYSQL_SYNTAX;
297 if (strlen(argv[1]) >= MAXLINE - 1)
298 return -E_NAMETOOLONG;
303 fmt = "insert into streams (name, def) values ('%s','%s')";
304 del_fmt="delete from streams where name='%s'";
306 size = MEDIUM_BLOB_SIZE;
307 fmt = "insert into pics (name, pic) values ('%s','%s')";
308 del_fmt="delete from pics where pic='%s'";
310 tmp = escape_str(argv[1]);
313 q = make_message(del_fmt, tmp);
319 if ((ret = send_buffer(fd, AWAITING_DATA_MSG) < 0))
321 if ((ret = fd2buf(fd, &blob, size)) < 0)
327 esc_blob = escape_blob(blob, size);
330 tmp = escape_str(argv[1]);
333 q = make_message(fmt, tmp, esc_blob);
344 int com_stradd(int fd, int argc, char *argv[])
346 return com_stradd_picadd(fd, argc, argv);
350 int com_picadd(int fd, int argc, char *argv[])
352 return com_stradd_picadd(fd, argc, argv);
356 * print results to fd
358 static int print_results(int fd, void *result,
359 my_ulonglong top, my_ulonglong left,
360 my_ulonglong bottom, my_ulonglong right)
366 for (i = top; i <= bottom; i++) {
367 row = mysql_fetch_row(result);
370 for (j = left; j <= right; j++) {
371 ret = send_va_buffer(fd, j == left? "%s" : "\t%s",
372 row[j]? row[j] : "NULL");
376 ret = send_buffer(fd, "\n");
386 int com_verb(int fd, int argc, char *argv[])
390 my_ulonglong num_rows, num_fields, top = 0, left = 0;
394 return -E_MYSQL_SYNTAX;
395 tmp = escape_str(argv[1]);
398 result = get_result(tmp);
401 /* return success, because it's ok to have no results */
403 num_fields = mysql_field_count(mysql_ptr);
404 num_rows = mysql_num_rows(result);
406 if (num_fields && num_rows)
407 ret = print_results(fd, result, top, left, num_rows - 1,
409 mysql_free_result(result);
413 /* returns NULL on errors or if there are no atts defined yet */
414 static void *get_all_attributes(void)
416 void *result = get_result("desc data");
417 unsigned int num_rows;
421 num_rows = mysql_num_rows(result);
423 mysql_free_result(result);
426 mysql_data_seek(result, (my_ulonglong)4); /* skip Lastplayed, Numplayed... */
431 * list all attributes
433 int com_laa(int fd, int argc, __a_unused char *argv[])
437 my_ulonglong top = 0, left = 0, bottom, right = 0;
440 return -E_MYSQL_SYNTAX;
441 result = get_all_attributes();
444 bottom = mysql_num_rows(result);
446 return -E_MYSQL_SYNTAX;
448 ret = print_results(fd, result, top, left, bottom, right);
449 mysql_free_result(result);
456 int com_hist(int fd, int argc, char *argv[])
461 my_ulonglong num_rows, top = 0, left = 0, right = 1;
464 return -E_MYSQL_SYNTAX;
466 char *tmp = escape_str(argv[1]);
469 atts = make_message("where %s = '1'", tmp);
472 atts = para_strdup(NULL);
474 q = make_message("select name, to_days(now()) - to_days(lastplayed) from "
475 "data %s order by lastplayed", atts);
477 result = get_result(q);
481 num_rows = mysql_num_rows(result);
484 ret = print_results(fd, result, top, left, num_rows - 1, right);
485 mysql_free_result(result);
490 * get last num audio files
492 int com_last(int fd, int argc, char *argv[])
497 my_ulonglong top = 0, left = 0, right = 0;
504 return -E_MYSQL_SYNTAX;
505 q = make_message("select name from data order by lastplayed desc "
507 result = get_result(q);
511 ret = print_results(fd, result, top, left, mysql_num_rows(result) - 1,
513 mysql_free_result(result);
517 int com_mbox(int fd, int argc, char *argv[])
522 my_ulonglong num_rows, num_fields, top = 0, left = 0;
523 char *query = para_strdup("select concat('From foo@localhost ', "
524 "date_format(Lastplayed, '%a %b %e %T %Y'), "
525 "'\nReceived: from\nTo: bar\n");
528 result = get_all_attributes();
532 while ((row = mysql_fetch_row(result))) {
537 tmp = make_message("%sX-Attribute-%s: ', %s, '\n", query,
542 query = para_strcat(query,
550 char *esc = escape_str(argv[1]), *tmp;
554 tmp = make_message("%s where name LIKE '%s'", query, esc);
559 mysql_free_result(result);
561 result = get_result(query);
564 ret = -E_EMPTY_RESULT;
565 num_fields = mysql_field_count(mysql_ptr);
566 num_rows = mysql_num_rows(result);
567 if (!num_fields || !num_rows)
569 ret = print_results(fd, result, top, left, num_rows - 1,
574 mysql_free_result(result);
579 * get attributes by name. If verbose is not 0, this function returns a string
580 * of the form 'att1="0",att2="1"'... which is used in com_cam() for
581 * constructing a mysql update query. Otherwise the space-separated list of all
582 * attributes which are set in the audio file given by name is returned. Never
583 * returns NULL in *NON VERBOSE* mode.
585 static char *get_atts(char *name, int verbose)
587 char *atts = NULL, *buf, *ebn;
588 void *result = NULL, *result2 = NULL;
591 my_ulonglong num_fields, offset = 4; /* skip Lastplayed, Numplayed... */
594 result2 = get_all_attributes();
597 ebn = escaped_basename(name);
600 buf = make_message("select * from data where name='%s'", ebn);
602 result = get_result(buf);
606 num_fields = mysql_num_fields(result);
609 mysql_data_seek(result2, offset);
610 row = mysql_fetch_row(result);
613 for (i = 4; i < num_fields; i++) {
614 int is_set = row[i] && !strcmp(row[i], "1");
615 row2 = mysql_fetch_row(result2);
616 if (!row2 || !row2[0])
618 if (atts && (verbose || is_set))
619 atts = para_strcat(atts, verbose? "," : " ");
620 if (is_set || verbose)
621 atts = para_strcat(atts, row2[0]);
623 atts = para_strcat(atts, is_set? "=\"1\"" : "=\"0\"");
627 mysql_free_result(result2);
629 mysql_free_result(result);
630 if (!atts && !verbose)
631 atts = para_strdup("(none)");
635 /* never returns NULL in verbose mode */
636 static char *get_meta(char *name, int verbose)
640 char *ebn, *q, *ret = NULL;
641 const char *verbose_fmt =
642 "select concat('lastplayed: ', "
643 "(to_days(now()) - to_days(lastplayed)),"
644 "' day(s). numplayed: ', numplayed, "
645 "', pic: ', pic_id) "
646 "from data where name = '%s'";
647 /* is that really needed? */
648 const char *fmt = "select concat('lastplayed=\\'', lastplayed, "
649 "'\\', numplayed=\\'', numplayed, "
650 "'\\', pic_id=\\'', pic_id, '\\'') "
651 "from data where name = '%s'";
653 if (!(ebn = escaped_basename(name)))
655 q = make_message(verbose? verbose_fmt : fmt, ebn);
657 result = get_result(q);
661 row = mysql_fetch_row(result);
664 ret = para_strdup(row[0]);
667 mysql_free_result(result);
669 ret = para_strdup("(not yet played)");
673 static char *get_dir(char *name)
675 char *ret = NULL, *q, *ebn;
679 if (!(ebn = escaped_basename(name)))
681 q = make_message("select dir from dir where name = '%s'", ebn);
683 result = get_result(q);
687 row = mysql_fetch_row(result);
689 ret = para_strdup(row[0]);
690 mysql_free_result(result);
694 /* never returns NULL */
695 static char *get_current_stream(void)
699 void *result = get_result("select def from streams where "
700 "name = 'current_stream'");
704 row = mysql_fetch_row(result);
707 ret = para_strdup(row[0]);
708 mysql_free_result(result);
712 mysql_free_result(result);
713 return para_strdup("(none)");
717 * Read stream definition of stream streamname and construct mysql
718 * query. Return NULL on errors. If streamname is NULL, use current
719 * stream. If that is also NULL, use query that selects everything.
720 * If filename is NULL, query will list everything, otherwise only
721 * the score of given file.
723 static char *get_query(char *streamname, char *filename, int with_path)
725 char *accept_opts = NULL, *deny_opts = NULL, *score = NULL;
726 char *where_clause, *order, *query;
727 char command[255] = ""; /* buffer for sscanf */
731 char *select_clause = NULL;
733 tmp = get_current_stream();
735 tmp = escape_str(streamname);
739 if (!strcmp(tmp, "(none)")) {
742 char *ret, *ebn = escaped_basename(filename);
745 ret = make_message("select to_days(now()) - "
746 "to_days(lastplayed) from data "
747 "where name = '%s'", ebn);
753 "select concat(dir.dir, '/', dir.name) "
754 "from data, dir where dir.name = data.name "
755 "order by data.lastplayed"
758 "select name from data where name is not NULL "
759 "order by lastplayed"
763 query = make_message("select def from streams where name = '%s'",
765 result = get_result(query);
770 row = mysql_fetch_row(result);
776 char *arg, *line = end;
778 if (!(end = strchr(line, '\n')))
782 if (sscanf(line, "%200s%n", command, &n) < 1)
785 if (!strcmp(command, "accept:")) {
786 char *tmp2 = s_a_r_list(mysql_macro_list, arg);
788 accept_opts = para_strcat(
789 accept_opts, " or ");
790 accept_opts = para_strcat(accept_opts, tmp2);
794 if (!strcmp(command, "deny:")) {
795 char *tmp2 = s_a_r_list(mysql_macro_list, arg);
797 deny_opts = para_strcat(deny_opts, " or ");
798 deny_opts = para_strcat(deny_opts, tmp2);
802 if (!score && !strcmp(command, "score:"))
803 score = s_a_r_list(mysql_macro_list, arg);
806 score = s_a_r_list(mysql_macro_list, conf.mysql_default_score_arg);
811 char *ebn = escaped_basename(filename);
814 select_clause = make_message("select %s from data ", score);
816 where_clause = make_message( "where name = '%s' ", ebn);
818 order = para_strdup("");
821 select_clause = para_strdup(with_path?
822 "select concat(dir.dir, '/', dir.name) from data, dir "
823 "where dir.name = data.name "
825 "select name from data where name is not NULL");
826 order = make_message("order by -(%s)", score);
828 if (accept_opts && deny_opts) {
829 where_clause = make_message("and ((%s) and not (%s)) ",
830 accept_opts, deny_opts);
833 if (accept_opts && !deny_opts) {
834 where_clause = make_message("and (%s) ", accept_opts);
837 if (!accept_opts && deny_opts) {
838 where_clause = make_message("and not (%s) ", deny_opts);
841 where_clause = para_strdup("");
843 query = make_message("%s %s %s", select_clause, where_clause, order);
853 mysql_free_result(result);
860 * This is called from server and from some commands. Name must not be NULL
861 * Never returns NULL.
863 static char *get_selector_info(char *name)
865 char *meta, *atts, *info, *dir, *query, *stream;
867 MYSQL_ROW row = NULL;
870 return para_strdup("(none)");
871 stream = get_current_stream();
872 meta = get_meta(name, 1);
873 atts = get_atts(name, 0);
876 query = get_query(stream, name, 0); /* FIXME: pass stream == NULL instead? */
879 result = get_result(query);
882 row = mysql_fetch_row(result);
884 info = make_message("dbinfo1:dir: %s\n"
885 "dbinfo2:stream: %s, %s, score: %s\n"
887 dir? dir : "(not contained in table)",
889 (result && row && row[0])? row[0] : "(no score)",
896 mysql_free_result(result);
900 /* might return NULL */
901 static char *get_current_audio_file(void)
905 name = para_basename(mmd->filename);
910 /* If called as child, mmd_lock must be held */
911 static void update_mmd(char *info)
913 PARA_DEBUG_LOG("%s", "updating shared memory area\n");
914 strncpy(mmd->selector_info, info, MMD_INFO_SIZE - 1);
915 mmd->selector_info[MMD_INFO_SIZE - 1] = '\0';
918 static void refresh_selector_info(void)
920 char *name = get_current_audio_file();
925 info = get_selector_info(name);
933 /* list attributes / print database info */
934 static int com_la_info(int fd, int argc, char *argv[])
936 char *name = NULL, *meta = NULL, *atts = NULL, *dir = NULL;
937 int ret, la = strcmp(argv[0], "info");
940 ret = -E_GET_AUDIO_FILE;
941 if (!(name = get_current_audio_file()))
943 ret = send_va_buffer(fd, "%s\n", name);
948 if (!(name = escaped_basename(argv[1])))
951 meta = get_meta(name, 1);
952 atts = get_atts(name, 0);
955 ret = send_va_buffer(fd, "%s\n", atts);
957 ret = send_va_buffer(fd, "dir: %s\n" "%s\n" "attributes: %s\n",
958 dir? dir : "(not contained in table)", meta, atts);
967 /* list attributes */
968 int com_la(int fd, int argc, char *argv[])
970 return com_la_info(fd, argc, argv);
973 /* print database info */
974 int com_info(int fd, int argc, char *argv[])
976 return com_la_info(fd, argc, argv);
979 static int change_stream(const char *stream)
983 query = make_message("update streams set def='%s' "
984 "where name = 'current_stream'", stream);
985 ret = real_query(query);
990 static int get_pic_id_by_name(char *name)
997 if (!(ebn = escaped_basename(name)))
999 q = make_message("select pic_id from data where name = '%s'", ebn);
1001 result = get_result(q);
1005 row = mysql_fetch_row(result);
1009 mysql_free_result(result);
1013 static int remove_entry(const char *name)
1015 char *q, *ebn = escaped_basename(name);
1016 int ret = -E_ESCAPE;
1020 q = make_message("delete from data where name = '%s'", ebn);
1021 real_query(q); /* ignore errors */
1023 q = make_message("delete from dir where name = '%s'", ebn);
1024 real_query(q); /* ignore errors */
1032 static int add_entry(const char *name)
1034 char *q, *dn, *ebn = NULL, *edn = NULL;
1037 if (!name || !*name)
1038 return -E_MYSQL_SYNTAX;
1039 ebn = escaped_basename(name);
1042 ret = -E_MYSQL_SYNTAX;
1043 dn = para_dirname(name);
1047 edn = escape_str(dn);
1051 q = make_message("insert into data (name, pic_id) values "
1052 "('%s', '%s')", ebn, "1");
1053 ret = real_query(q);
1054 // ret = 1; PARA_DEBUG_LOG("q: %s\n", q);
1058 q = make_message("insert into dir (name, dir) values "
1059 "('%s', '%s')", ebn, edn);
1060 // ret = 1; PARA_DEBUG_LOG("q: %s\n", q);
1061 ret = real_query(q);
1072 * remove/add entries
1074 static int com_rm_ne(__a_unused int fd, int argc, char *argv[])
1076 int ne = !strcmp(argv[0], "ne");
1079 return -E_MYSQL_SYNTAX;
1080 for (i = 1; i < argc; i++) {
1081 ret = remove_entry(argv[i]);
1086 ret = add_entry(argv[i]);
1096 int com_rm(int fd, int argc, char *argv[])
1098 return com_rm_ne(fd, argc, argv);
1104 int com_ne(int fd, int argc, char *argv[])
1106 return com_ne(fd, argc, argv);
1112 int com_mv(__a_unused int fd, int argc, char *argv[])
1114 char *q, *dn, *ebn1 = NULL, *ebn2 = NULL, *edn = NULL;
1118 return -E_MYSQL_SYNTAX;
1120 ebn1 = escaped_basename(argv[1]);
1121 ebn2 = escaped_basename(argv[2]);
1122 if (!ebn1 || !ebn2 || !*ebn1 || !*ebn2)
1124 ret = -E_MYSQL_SYNTAX;
1125 if (!strcmp(ebn1, ebn2))
1127 remove_entry(argv[2]); /* no need to escape, ignore error */
1128 q = make_message("update data set name = '%s' where name = '%s'",
1130 ret = real_query(q);
1134 ret = -E_AUDIO_FILE;
1135 if (!mysql_affected_rows(mysql_ptr))
1137 q = make_message("update dir set name = '%s' where name = '%s'",
1139 ret = real_query(q);
1145 dn = para_dirname(argv[2]);
1149 edn = escape_str(dn);
1156 q = make_message("update dir set dir = '%s' where name = '%s'",
1158 ret = real_query(q);
1170 static int com_set(__a_unused int fd, int argc, char *argv[])
1175 const char *field = strcmp(argv[0], "picass")? "numplayed" : "pic_id";
1178 return -E_MYSQL_SYNTAX;
1180 for (i = 2; i < argc; i++) {
1181 ebn = escaped_basename(argv[i]);
1184 q = make_message("update data set %s = %lu "
1185 "where name = '%s'", field, id, ebn);
1187 ret = real_query(q);
1196 * snp: set numplayed
1198 int com_picass(int fd, int argc, char *argv[])
1200 return com_set(fd, argc, argv);
1204 * snp: set numplayed
1206 int com_snp(int fd, int argc, char *argv[])
1208 int ret = com_set(fd, argc, argv);
1210 refresh_selector_info();
1215 * picch: change entry's name in pics table
1217 int com_picch(__a_unused int fd, int argc, char *argv[])
1224 return -E_MYSQL_SYNTAX;
1227 tmp = escape_str(argv[2]);
1230 q = make_message("update pics set name = '%s' where id = %lu", tmp, id);
1232 ret = real_query(q);
1238 * piclist: print list of pics in db
1240 int com_piclist(__a_unused int fd, int argc, __a_unused char *argv[])
1242 void *result = NULL;
1244 unsigned long *length;
1248 return -E_MYSQL_SYNTAX;
1249 result = get_result("select id,name,pic from pics order by id");
1252 while ((row = mysql_fetch_row(result))) {
1253 length = mysql_fetch_lengths(result);
1254 if (!row || !row[0] || !row[1] || !row[2])
1256 ret = send_va_buffer(fd, "%s\t%lu\t%s\n", row[0], length[2], row[1]);
1262 mysql_free_result(result);
1267 * picdel: delete picture from database
1269 int com_picdel(int fd, int argc, char *argv[])
1277 return -E_MYSQL_SYNTAX;
1278 for (i = 1; i < argc; i++) {
1280 q = make_message("delete from pics where id = %lu", id);
1281 ret = real_query(q);
1285 aff = mysql_affected_rows(mysql_ptr);
1287 ret = send_va_buffer(fd, "No such id: %lu\n", id);
1292 q = make_message("update data set pic_id = 1 where pic_id = %lu", id);
1293 ret = real_query(q);
1299 * pic: get picture by name or by number
1301 int com_pic(int fd, int argc, char *argv[])
1303 void *result = NULL;
1305 unsigned long *length, id;
1307 char *q, *name = NULL;
1310 ret = -E_GET_AUDIO_FILE;
1311 name = get_current_audio_file();
1314 name = escaped_basename(argv[1]);
1319 id = atoi(name + 1);
1321 id = get_pic_id_by_name(name);
1325 q = make_message("select pic from pics where id = '%lu'", id);
1326 result = get_result(q);
1330 row = mysql_fetch_row(result);
1332 if (!row || !row[0])
1334 length = mysql_fetch_lengths(result);
1335 ret = send_bin_buffer(fd, row[0], *length);
1337 mysql_free_result(result);
1342 int com_strdel(__a_unused int fd, int argc, char *argv[])
1348 return -E_MYSQL_SYNTAX;
1349 tmp = escape_str(argv[1]);
1352 q = make_message("delete from streams where name='%s'", tmp);
1354 ret = real_query(q);
1362 int com_ls(int fd, int argc, char *argv[])
1367 my_ulonglong num_rows, top = 0, left = 0, right = 0;
1370 return -E_MYSQL_SYNTAX;
1372 char *tmp = escape_str(argv[1]);
1375 q = make_message("select name from data where name like '%s'",
1379 q = para_strdup("select name from data");
1380 result = get_result(q);
1384 num_rows = mysql_num_rows(result);
1387 ret = print_results(fd, result, top, left, num_rows - 1, right);
1388 mysql_free_result(result);
1395 int com_summary(__a_unused int fd, int argc, __a_unused char *argv[])
1400 void *result2 = NULL;
1401 const char *fmt = "select count(name) from data where %s='1'";
1402 int ret = -E_NORESULT;
1405 return -E_MYSQL_SYNTAX;
1406 result = get_all_attributes();
1409 while ((row = mysql_fetch_row(result))) {
1416 buf = make_message(fmt, row[0]);
1417 result2 = get_result(buf);
1422 row2 = mysql_fetch_row(result2);
1423 if (!row2 || !row2[0])
1425 ret = send_va_buffer(fd, "%s\t%s\n", row[0], row2[0]);
1432 mysql_free_result(result2);
1434 mysql_free_result(result);
1438 static int get_numplayed(char *name)
1442 const char *fmt = "select numplayed from data where name = '%s'";
1443 char *buf = make_message(fmt, name);
1444 int ret = -E_NORESULT;
1446 result = get_result(buf);
1451 row = mysql_fetch_row(result);
1452 if (!row || !row[0])
1457 mysql_free_result(result);
1461 static int update_audio_file(char *name)
1464 const char *fmt1 = "update data set lastplayed = now() where name = '%s'";
1465 const char *fmt2 = "update data set numplayed = %i where name = '%s'";
1467 char *ebn = escaped_basename(name);
1472 q = make_message(fmt1, ebn);
1473 ret = real_query(q);
1477 ret = get_numplayed(ebn);
1480 q = make_message(fmt2, ret + 1, ebn);
1481 ret = real_query(q);
1488 static void update_audio_file_server_handler(char *name)
1491 info = get_selector_info(name);
1494 update_audio_file(name);
1497 int com_us(__a_unused int fd, int argc, char *argv[])
1503 return -E_MYSQL_SYNTAX;
1504 tmp = escape_str(argv[1]);
1507 ret = update_audio_file(argv[1]);
1510 refresh_selector_info();
1514 /* select previous / next stream */
1515 static int com_ps_ns(__a_unused int fd, int argc, char *argv[])
1517 char *query, *stream = get_current_stream();
1518 void *result = get_result("select name from streams");
1521 my_ulonglong num_rows, match, i;
1523 ret = -E_MYSQL_SYNTAX;
1529 num_rows = mysql_num_rows(result);
1530 ret = -E_EMPTY_RESULT;
1534 for (i = 0; i < num_rows; i++) {
1535 row = mysql_fetch_row(result);
1536 if (!row || !row[0])
1538 if (!strcmp(row[0], "current_stream"))
1540 if (!strcmp(row[0], stream))
1547 if (!strcmp(argv[0], "ps"))
1548 i = match > 0? match - 1 : num_rows - 1;
1550 i = match < num_rows - 1? match + 1 : 0;
1552 mysql_data_seek(result, i);
1553 row = mysql_fetch_row(result);
1554 if (!row || !row[0])
1556 if (!strcmp(row[0], "current_stream")) {
1557 if (!strcmp(argv[0], "ps")) {
1558 i = match < 2? match + num_rows - 2 : match - 2;
1561 i = i > num_rows - 1? i - num_rows : i;
1563 mysql_data_seek(result, i);
1564 row = mysql_fetch_row(result);
1565 if (!row || !row[0])
1568 query = make_message("update streams set def='%s' where name = "
1569 "'current_stream'", row[0]);
1570 ret = real_query(query);
1572 refresh_selector_info();
1576 mysql_free_result(result);
1580 /* select previous stream */
1581 int com_ps(int fd, int argc, char *argv[])
1583 return com_ps_ns(fd, argc, argv);
1586 /* select next stream */
1587 int com_ns(int fd, int argc, char *argv[])
1589 return com_ps_ns(fd, argc, argv);
1593 int com_streams(int fd, int argc, __a_unused char *argv[])
1595 unsigned int num_rows;
1596 int i, ret = -E_NORESULT;
1600 if (argc > 1 && strcmp(argv[1], "current_stream"))
1601 return -E_MYSQL_SYNTAX;
1603 char *cs = get_current_stream();
1604 ret = send_va_buffer(fd, "%s\n", cs);
1608 result = get_result("select name from streams");
1611 num_rows = mysql_num_rows(result);
1616 for (i = 0; i < num_rows; i++) {
1617 row = mysql_fetch_row(result);
1618 if (!row || !row[0])
1620 if (strcmp(row[0], "current_stream"))
1621 send_va_buffer(fd, "%s\n", row[0]);
1626 mysql_free_result(result);
1630 /* query stream definition */
1631 int com_strq(int fd, int argc, char *argv[])
1639 ret = -E_GET_STREAM;
1640 name = get_current_stream();
1643 name = escaped_basename(argv[1]);
1648 query = make_message("select def from streams where name='%s'", name);
1650 result = get_result(query);
1655 row = mysql_fetch_row(result);
1656 if (!row || !row[0])
1658 /* no '\n' needed */
1659 ret = send_buffer(fd, row[0]);
1662 mysql_free_result(result);
1666 /* change stream / change stream and play */
1667 static int com_cs_csp(int fd, int argc, char *argv[])
1669 int ret, stream_change;
1670 char *query, *stream = NULL;
1671 char *old_stream = get_current_stream();
1672 int csp = !strcmp(argv[0], "csp");
1674 ret = -E_MYSQL_SYNTAX;
1680 ret = send_va_buffer(fd, "%s\n", old_stream);
1684 /* test if stream is valid, no need to escape argv[1] */
1685 query = get_query(argv[1], NULL, 0);
1690 stream = escape_str(argv[1]);
1693 stream_change = strcmp(stream, old_stream);
1694 if (stream_change) {
1695 ret = change_stream(stream);
1698 refresh_selector_info();
1702 mmd->new_vss_status_flags |= VSS_PLAYING;
1704 mmd->new_vss_status_flags |= VSS_NEXT;
1715 int com_cs(int fd, int argc, char *argv[])
1717 return com_cs_csp(fd, argc, argv);
1720 /* change stream and play */
1721 int com_csp(int fd, int argc, char *argv[])
1723 return com_cs_csp(fd, argc, argv);
1726 /* score list / skip */
1727 static int com_sl_skip(int fd, int argc, char *argv[])
1729 void *result = NULL;
1731 int ret, i, skip = !strcmp(argv[0], "skip");
1732 char *query, *stream, *tmp;
1733 unsigned int num_rows, num;
1736 return -E_MYSQL_SYNTAX;
1737 num = atoi(argv[1]);
1739 return -E_MYSQL_SYNTAX;
1741 stream = get_current_stream();
1743 return -E_GET_STREAM;
1745 stream = escape_str(argv[2]);
1749 tmp = get_query(stream, NULL, 0);
1752 return -E_GET_QUERY;
1753 query = make_message("%s limit %d", tmp, num);
1756 result = get_result(query);
1760 ret = -E_EMPTY_RESULT;
1761 num_rows = mysql_num_rows(result);
1764 for (i = 0; i < num_rows && i < num; i++) {
1765 row = mysql_fetch_row(result);
1767 send_va_buffer(fd, "Skipping %s\n", row[0]);
1768 update_audio_file(row[0]);
1770 send_va_buffer(fd, "%s\n", row[0]? row[0]: "BUG");
1775 mysql_free_result(result);
1780 int com_sl(int fd, int argc, char *argv[])
1782 return com_sl_skip(fd, argc, argv);
1786 int com_skip(int fd, int argc, char *argv[])
1788 return com_sl_skip(fd, argc, argv);
1792 * update attributes of name
1794 static int update_atts(int fd, char *name, char *atts)
1797 char *ebn, *q, *old, *new = NULL;
1801 ebn = escaped_basename(name);
1804 q = make_message("update data set %s where name = '%s'", atts, ebn);
1805 old = get_atts(ebn, 0);
1806 send_va_buffer(fd, "old: %s\n", old);
1808 ret = real_query(q);
1812 new = get_atts(ebn, 0);
1813 ret = send_va_buffer(fd, "new: %s\n", new);
1823 int com_sa(int fd, int argc, char *argv[])
1826 char *atts = NULL, *name;
1829 return -E_MYSQL_SYNTAX;
1830 for (i = 1; i < argc; i++) {
1832 char *esc, *tmp, *p =argv[i];
1833 int len = strlen(p);
1837 switch (p[len - 1]) {
1848 esc = escape_str(p);
1851 tmp = make_message("%s%s='%s'", atts? "," : "", esc,
1854 atts = para_strcat(atts, tmp);
1860 if (i >= argc) { /* no name given, use current af */
1861 ret = -E_GET_AUDIO_FILE;
1862 if (!(name = get_current_audio_file()))
1864 ret = update_atts(fd, name, atts);
1868 for (; argv[i] && ret >= 0; i++)
1869 ret = update_atts(fd, argv[i], atts);
1871 refresh_selector_info();
1880 int com_cam(int fd, int argc, char *argv[])
1882 char *name = NULL, *meta = NULL, *atts = NULL;
1886 return -E_MYSQL_SYNTAX;
1887 if (!(name = escaped_basename(argv[1])))
1890 if (!(atts = get_atts(name, 1)))
1893 if (!(meta = get_meta(name, 0)))
1895 for (i = 2; i < argc; i++) {
1898 if (!(ebn = escaped_basename(argv[i])))
1900 ret = send_va_buffer(fd, "updating %s\n", ebn);
1905 q = make_message("update data set %s where name = '%s'",
1907 if ((ret = update_atts(fd, ebn, atts)) >= 0)
1908 ret = real_query(q);
1928 static int com_vrfy_clean(int fd, int argc, __a_unused char *argv[])
1931 int ret, vrfy_mode = strcmp(argv[0], "clean");
1932 void *result = NULL;
1935 my_ulonglong num_rows, top = 0, left = 0, right = 0;
1938 return -E_MYSQL_SYNTAX;
1940 result = get_result("select data.name from data left join dir on "
1941 "dir.name = data.name where dir.name is NULL");
1944 num_rows = mysql_num_rows(result);
1946 ret = send_buffer(fd, "No invalid entries\n");
1950 send_va_buffer(fd, "found %i invalid entr%s\n", num_rows,
1951 num_rows == 1? "y" : "ies");
1952 ret = print_results(fd, result, top, left, num_rows - 1, right);
1955 while ((row = mysql_fetch_row(result))) {
1960 escaped_name = escape_str(row[0]);
1963 send_va_buffer(fd, "deleting %s\n", escaped_name);
1964 query = make_message("delete from data where name = '%s'",
1966 ret = real_query(query);
1974 mysql_free_result(result);
1981 int com_vrfy(int fd, int argc, char **argv)
1983 return com_vrfy_clean(fd, argc, argv);
1989 int com_clean(int fd, int argc, char **argv)
1991 return com_vrfy_clean(fd, argc, argv);
1994 static FILE *out_file;
1996 static int mysql_write_tmp_file(const char *dir, const char *name)
1998 int ret = -E_TMPFILE;
1999 char *msg = make_message("%s\t%s\n", dir, name);
2000 if (fputs(msg, out_file) != EOF)
2009 int com_upd(int fd, int argc, __a_unused char *argv[])
2011 char *tempname = NULL, *query = NULL;
2012 int ret, out_fd = -1, num = 0;
2013 void *result = NULL;
2014 unsigned int num_rows;
2018 return -E_MYSQL_SYNTAX;
2020 tempname = para_strdup("/tmp/mysql.tmp.XXXXXX");
2021 ret = para_mkstemp(tempname, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
2025 out_file = fdopen(out_fd, "w");
2030 if (find_audio_files(conf.mysql_audio_file_dir_arg, mysql_write_tmp_file) < 0)
2032 num = ftell(out_file);
2034 * we have to make sure the file hit the disk before we call
2039 PARA_DEBUG_LOG("wrote tempfile %s (%d bytes)\n", tempname, num);
2042 if ((ret = real_query("delete from dir")) < 0)
2044 query = make_message("load data infile '%s' ignore into table dir "
2045 "fields terminated by '\t' lines terminated by '\n' "
2046 "(dir, name)", tempname);
2047 ret = real_query(query);
2051 result = get_result("select dir.name from dir left join data on "
2052 "data.name = dir.name where data.name is NULL");
2056 num_rows = mysql_num_rows(result);
2058 ret = send_buffer(fd, "no new entries\n");
2061 while ((row = mysql_fetch_row(result))) {
2066 send_va_buffer(fd, "new entry: %s\n", row[0]);
2067 erow = escape_str(row[0]);
2070 query = make_message("insert into data (name, pic_id) values "
2071 "('%s','%s')", erow, "1");
2073 ret = real_query(query);
2086 mysql_free_result(result);
2090 static char **server_get_audio_file_list(unsigned int num)
2092 char **list = para_malloc((num + 1) * sizeof(char *));
2093 char *tmp, *query, *stream = get_current_stream();
2094 void *result = NULL;
2095 unsigned int num_rows;
2099 tmp = get_query(stream, NULL, 1);
2103 query = make_message("%s limit %d", tmp, num);
2105 result = get_result(query);
2109 num_rows = mysql_num_rows(result);
2112 for (i = 0; i < num_rows && i < num; i++) {
2113 row = mysql_fetch_row(result);
2114 if (!row || !row[0])
2116 list[i] = para_strdup(row[0]);
2129 mysql_free_result(result);
2134 * connect to mysql server, return mysql pointer on success, -E_NOTCONN
2135 * on errors. Called from parent on startup and also from com_cdb().
2137 static int init_mysql_server(void)
2139 char *u = conf.mysql_user_arg? conf.mysql_user_arg : para_logname();
2142 mysql_ptr = mysql_init(NULL);
2144 PARA_CRIT_LOG("%s", "mysql init error\n");
2147 if (conf.mysql_port_arg < 0)
2148 return -E_MYSQL_SYNTAX;
2149 port = conf.mysql_port_arg;
2150 PARA_DEBUG_LOG("connecting: %s@%s:%d\n", u, conf.mysql_host_arg, port);
2151 if (!conf.mysql_user_arg)
2154 * If host is NULL a connection to the local host is assumed,
2155 * If user is NULL, the current user is assumed
2157 if (!(mysql_ptr = mysql_real_connect(mysql_ptr,
2158 conf.mysql_host_arg,
2159 conf.mysql_user_arg,
2160 conf.mysql_passwd_arg,
2161 conf.mysql_database_arg,
2163 PARA_CRIT_LOG("%s", "connect error\n");
2166 PARA_INFO_LOG("%s", "success\n");
2170 /* mmd lock must be held */
2171 static void write_msg2mmd(int success)
2173 sprintf(mmd->selector_info, "dbinfo1:%s\ndbinfo2:mysql-%s\ndbinfo3:\n",
2174 success < 0? PARA_STRERROR(-success) :
2175 "successfully connected to mysql server",
2176 success < 0? "" : mysql_get_server_info(mysql_ptr));
2179 /* create database */
2180 int com_cdb(int fd, int argc, char *argv[])
2186 PARA_INFO_LOG("%s", "closing database\n");
2187 mysql_close(mysql_ptr);
2189 /* dont use any database */
2190 conf.mysql_database_arg = NULL; /* leak? */
2191 ret = -E_MYSQL_INIT;
2192 if (init_mysql_server() < 0 || !mysql_ptr)
2195 conf.mysql_database_arg = para_strdup("paraslash");
2198 conf.mysql_database_arg = escape_str(argv[1]);
2199 if (!conf.mysql_database_arg)
2202 query = make_message("create database %s", conf.mysql_database_arg);
2203 ret = real_query(query);
2207 /* reconnect with database just created */
2208 mysql_close(mysql_ptr);
2209 ret = -E_MYSQL_INIT;
2210 if (init_mysql_server() < 0 || !mysql_ptr)
2216 if (real_query("create table data (name varchar(255) binary not null "
2218 "lastplayed datetime not null default "
2220 "numplayed int not null default 0, "
2221 "pic_id bigint unsigned not null default 1)") < 0)
2223 if (real_query("create table dir (name varchar(255) binary not null "
2224 "primary key, dir varchar(255) default null)") < 0)
2226 if (real_query("create table pics ("
2227 "id bigint(20) unsigned not null primary key "
2229 "name varchar(255) binary not null, "
2230 "pic mediumblob not null)") < 0)
2232 if (real_query("create table streams ("
2233 "name varchar(255) binary not null primary key, "
2234 "def blob not null)") < 0)
2236 if (real_query("insert into streams (name, def) values "
2237 "('current_stream', '(none)')") < 0)
2239 ret = send_va_buffer(fd, "successfully created database %s\n",
2240 conf.mysql_database_arg);
2245 static void shutdown_connection(void)
2248 PARA_NOTICE_LOG("%s", "shutting down mysql connection\n");
2249 mysql_close(mysql_ptr);
2255 * the init function of the mysql-based audio file selector
2257 * \param db pointer to the struct to initialize
2259 * Check the command line options and initialize all function pointers of \a
2260 * db. Connect to the mysql server and initialize the info string.
2262 * \return This function returns success even if it could not connect
2263 * to the mysql server. This is because the connect is expected to fail
2264 * if there the paraslash database is not yet created. This gives the
2265 * user a chance to send the "cdb" to create the database.
2267 * \sa struct audio_file_selector, misc_meta_data::selector_info,
2270 int mysql_selector_init(struct audio_file_selector *db)
2274 if (!conf.mysql_passwd_given)
2275 return -E_NO_MYSQL_PASSWD;
2276 if (!conf.mysql_audio_file_dir_given)
2277 return -E_NO_AF_DIR;
2279 db->cmd_list = mysql_selector_cmds;
2280 db->get_audio_file_list = server_get_audio_file_list;
2281 db->update_audio_file = update_audio_file_server_handler;
2282 db->shutdown = shutdown_connection;
2283 ret = init_mysql_server();
2285 PARA_WARNING_LOG("%s\n", PARA_STRERROR(-ret));
2287 return 1; /* return success even if connect failed to give the
2288 * user the chance to exec com_cdb