2 * Copyright (C) 1999-2007 Andre Noll <maan@systemlinux.org>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
19 /** \file mysql_selector.c para_server's mysql-based audio file selector */
21 /** \cond some internal constants */
22 #define MEDIUM_BLOB_SIZE 16777220 /* (2**24 + 4) */
23 #define BLOB_SIZE 65539 /* (2**16 + 3) */
25 #include "server.cmdline.h"
29 #include <mysql/mysql.h>
30 #include <mysql/mysql_version.h>
35 #include "user_list.h"
36 #include "mysql_selector_command_list.h"
38 /** pointer to the shared memory area */
39 extern struct misc_meta_data *mmd;
41 static void *mysql_ptr = NULL;
44 * contains name/replacement pairs used by s_a_r_list()
49 /** the name of the macro */
51 /** the replacement text */
52 const char *replacement;
55 static const struct para_macro mysql_macro_list[] = {
57 .replacement = "(data.%s != '1')"
60 .replacement = "(data.%s = '1')"
63 .replacement = "%sdata.Pic_Id"
66 .replacement = "(data.name like '%s')"
69 .replacement = "%sFLOOR((UNIX_TIMESTAMP(now())"
70 "-UNIX_TIMESTAMP(data.Lastplayed))/60)"
73 .replacement = "%sdata.Numplayed"
80 * simple search and replace routine
82 * \param src source string
83 * \param macro_name the name of the macro
84 * \param replacement the replacement format string
86 * In \p src, replace each occurence of \p macro_name(arg) by the string
87 * determined by the \p replacement format string. \p replacement may (but
88 * needs not) contain a single string conversion specifier (%s) which gets
91 * \return A string in which all matches in \p src are replaced, or \p NULL if
92 * an syntax error was encountered. Caller must free the result.
96 __must_check __malloc static char *s_a_r(const char *src, const char* macro_name,
97 const char *replacement)
101 regmatch_t pmatch[1];
104 const char *bufptr = src;
106 if (!macro_name || !replacement || !src)
107 return para_strdup(src);
108 regcomp(&preg, macro_name, 0);
109 while (regexec(&preg, bufptr, nmatch, pmatch, eflags)
111 char *tmp, *arg, *o_bracket, *c_bracket;
113 o_bracket = strchr(bufptr + pmatch[0].rm_so, '(');
114 c_bracket = o_bracket? strchr(o_bracket, ')') : NULL;
117 tmp = para_strdup(bufptr);
118 tmp[pmatch[0].rm_so] = '\0';
119 dest = para_strcat(dest, tmp);
122 arg = para_strdup(o_bracket + 1);
123 arg[c_bracket - o_bracket - 1] = '\0';
124 tmp = make_message(replacement, arg);
126 dest = para_strcat(dest, tmp);
131 dest = para_strcat(dest, bufptr);
132 // PARA_DEBUG_LOG("%s: returning %s\n", __func__, dest);
139 * replace a string according to a list of macros
141 * \param macro_list the array containing a macro/replacement pairs.
142 * \param src the source string
144 * This function just calls s_a_r() for each element of \p macro_list.
146 * \return \p NULL if one of the underlying calls to \p s_a_r returned \p NULL.
147 * Otherwise the completely expanded version of \p src is returned.
149 __must_check __malloc static char *s_a_r_list(const struct para_macro *macro_list,
152 const struct para_macro *mp = macro_list;
153 char *ret = NULL, *tmp = para_strdup(src);
156 ret = s_a_r(tmp, mp->name, mp->replacement);
158 if (!ret) /* syntax error */
163 //PARA_DEBUG_LOG("%s: returning %s\n", __func__, dest);
167 static int real_query(const char *query)
171 PARA_DEBUG_LOG("%s\n", query);
172 if (mysql_real_query(mysql_ptr, query, strlen(query))) {
173 PARA_ERROR_LOG("real_query error (%s)\n",
174 mysql_error(mysql_ptr));
181 * Use open connection given by mysql_ptr to query server. Returns a
182 * result pointer on succes and NULL on errors
184 static struct MYSQL_RES *get_result(const char *query)
188 if (real_query(query) < 0)
190 result = mysql_store_result(mysql_ptr);
192 PARA_ERROR_LOG("%s", "store_result error\n");
196 * write input from fd to dynamically allocated char array,
197 * but maximal max_size byte. Return size.
199 static int fd2buf(int fd, char **buf_ptr, size_t max_size)
201 const size_t chunk_size = 1024;
203 char *buf = para_malloc(size * sizeof(char)), *p = buf;
206 while ((ret = recv_bin_buffer(fd, p, chunk_size)) > 0) {
208 if ((p - buf) + chunk_size >= size) {
212 if (size > max_size) {
216 tmp = para_realloc(buf, size);
231 static char *escape_blob(const char* old, size_t size)
237 new = para_malloc(2 * size * sizeof(char) + 1);
238 mysql_real_escape_string(mysql_ptr, new, old, size);
242 static char *escape_str(const char* old)
244 return escape_blob(old, strlen(old));
247 static char *escaped_basename(const char *name)
249 char *esc, *bn = para_basename(name);
253 esc = escape_str(bn);
261 int com_na(__a_unused int fd, int argc, char *argv[])
267 return -E_MYSQL_SYNTAX;
268 tmp = escape_str(argv[1]);
271 q = make_message("alter table data add %s char(1) "
272 "not null default 0", tmp);
282 int com_da(__a_unused int fd, int argc, char *argv[])
288 return -E_MYSQL_SYNTAX;
289 tmp = escape_str(argv[1]);
292 q = make_message("alter table data drop %s", tmp);
300 static int com_stradd_picadd(int fd, int argc, char *argv[])
302 char *blob = NULL, *esc_blob = NULL, *q = NULL, *tmp = NULL;
303 const char *fmt, *del_fmt;
304 int ret, stradd = strcmp(argv[0], "picadd");
308 return -E_MYSQL_SYNTAX;
309 if (strlen(argv[1]) >= MAXLINE - 1)
310 return -E_NAMETOOLONG;
315 fmt = "insert into streams (name, def) values ('%s','%s')";
316 del_fmt="delete from streams where name='%s'";
318 size = MEDIUM_BLOB_SIZE;
319 fmt = "insert into pics (name, pic) values ('%s','%s')";
320 del_fmt="delete from pics where pic='%s'";
322 tmp = escape_str(argv[1]);
325 q = make_message(del_fmt, tmp);
331 if ((ret = send_buffer(fd, AWAITING_DATA_MSG) < 0))
333 if ((ret = fd2buf(fd, &blob, size)) < 0)
339 esc_blob = escape_blob(blob, size);
342 tmp = escape_str(argv[1]);
345 q = make_message(fmt, tmp, esc_blob);
356 int com_stradd(int fd, int argc, char *argv[])
358 return com_stradd_picadd(fd, argc, argv);
362 int com_picadd(int fd, int argc, char *argv[])
364 return com_stradd_picadd(fd, argc, argv);
368 * print results to fd
370 static int print_results(int fd, void *result,
371 my_ulonglong top, my_ulonglong left,
372 my_ulonglong bottom, my_ulonglong right)
378 for (i = top; i <= bottom; i++) {
379 row = mysql_fetch_row(result);
382 for (j = left; j <= right; j++) {
383 ret = send_va_buffer(fd, j == left? "%s" : "\t%s",
384 row[j]? row[j] : "NULL");
388 ret = send_buffer(fd, "\n");
398 int com_verb(int fd, int argc, char *argv[])
402 my_ulonglong num_rows, num_fields, top = 0, left = 0;
406 return -E_MYSQL_SYNTAX;
407 tmp = escape_str(argv[1]);
410 result = get_result(tmp);
413 /* return success, because it's ok to have no results */
415 num_fields = mysql_field_count(mysql_ptr);
416 num_rows = mysql_num_rows(result);
418 if (num_fields && num_rows)
419 ret = print_results(fd, result, top, left, num_rows - 1,
421 mysql_free_result(result);
425 /* returns NULL on errors or if there are no atts defined yet */
426 static void *get_all_attributes(void)
428 void *result = get_result("desc data");
429 unsigned int num_rows;
433 num_rows = mysql_num_rows(result);
435 mysql_free_result(result);
438 mysql_data_seek(result, (my_ulonglong)4); /* skip Lastplayed, Numplayed... */
443 * list all attributes
445 int com_laa(int fd, int argc, __a_unused char *argv[])
449 my_ulonglong top = 0, left = 0, bottom, right = 0;
452 return -E_MYSQL_SYNTAX;
453 result = get_all_attributes();
456 bottom = mysql_num_rows(result);
458 return -E_MYSQL_SYNTAX;
460 ret = print_results(fd, result, top, left, bottom, right);
461 mysql_free_result(result);
468 int com_hist(int fd, int argc, char *argv[])
473 my_ulonglong num_rows, top = 0, left = 0, right = 1;
476 return -E_MYSQL_SYNTAX;
478 char *tmp = escape_str(argv[1]);
481 atts = make_message("where %s = '1'", tmp);
484 atts = para_strdup(NULL);
486 q = make_message("select name, to_days(now()) - to_days(lastplayed) from "
487 "data %s order by lastplayed", atts);
489 result = get_result(q);
493 num_rows = mysql_num_rows(result);
496 ret = print_results(fd, result, top, left, num_rows - 1, right);
497 mysql_free_result(result);
502 * get last num audio files
504 int com_last(int fd, int argc, char *argv[])
509 my_ulonglong top = 0, left = 0, right = 0;
516 return -E_MYSQL_SYNTAX;
517 q = make_message("select name from data order by lastplayed desc "
519 result = get_result(q);
523 ret = print_results(fd, result, top, left, mysql_num_rows(result) - 1,
525 mysql_free_result(result);
529 int com_mbox(int fd, int argc, char *argv[])
534 my_ulonglong num_rows, num_fields, top = 0, left = 0;
535 char *query = para_strdup("select concat('From foo@localhost ', "
536 "date_format(Lastplayed, '%a %b %e %T %Y'), "
537 "'\nReceived: from\nTo: bar\n");
540 result = get_all_attributes();
544 while ((row = mysql_fetch_row(result))) {
549 tmp = make_message("%sX-Attribute-%s: ', %s, '\n", query,
554 query = para_strcat(query,
562 char *esc = escape_str(argv[1]), *tmp;
566 tmp = make_message("%s where name LIKE '%s'", query, esc);
571 mysql_free_result(result);
573 result = get_result(query);
576 ret = -E_EMPTY_RESULT;
577 num_fields = mysql_field_count(mysql_ptr);
578 num_rows = mysql_num_rows(result);
579 if (!num_fields || !num_rows)
581 ret = print_results(fd, result, top, left, num_rows - 1,
586 mysql_free_result(result);
591 * get attributes by name. If verbose is not 0, this function returns a string
592 * of the form 'att1="0",att2="1"'... which is used in com_cam() for
593 * constructing a mysql update query. Otherwise the space-separated list of all
594 * attributes which are set in the audio file given by name is returned. Never
595 * returns NULL in *NON VERBOSE* mode.
597 static char *get_atts(char *name, int verbose)
599 char *atts = NULL, *buf, *ebn;
600 void *result = NULL, *result2 = NULL;
603 my_ulonglong num_fields, offset = 4; /* skip Lastplayed, Numplayed... */
606 result2 = get_all_attributes();
609 ebn = escaped_basename(name);
612 buf = make_message("select * from data where name='%s'", ebn);
614 result = get_result(buf);
618 num_fields = mysql_num_fields(result);
621 mysql_data_seek(result2, offset);
622 row = mysql_fetch_row(result);
625 for (i = 4; i < num_fields; i++) {
626 int is_set = row[i] && !strcmp(row[i], "1");
627 row2 = mysql_fetch_row(result2);
628 if (!row2 || !row2[0])
630 if (atts && (verbose || is_set))
631 atts = para_strcat(atts, verbose? "," : " ");
632 if (is_set || verbose)
633 atts = para_strcat(atts, row2[0]);
635 atts = para_strcat(atts, is_set? "=\"1\"" : "=\"0\"");
639 mysql_free_result(result2);
641 mysql_free_result(result);
642 if (!atts && !verbose)
643 atts = para_strdup("(none)");
647 /* never returns NULL in verbose mode */
648 static char *get_meta(char *name, int verbose)
652 char *ebn, *q, *ret = NULL;
653 const char *verbose_fmt =
654 "select concat('lastplayed: ', "
655 "(to_days(now()) - to_days(lastplayed)),"
656 "' day(s). numplayed: ', numplayed, "
657 "', pic: ', pic_id) "
658 "from data where name = '%s'";
659 /* is that really needed? */
660 const char *fmt = "select concat('lastplayed=\\'', lastplayed, "
661 "'\\', numplayed=\\'', numplayed, "
662 "'\\', pic_id=\\'', pic_id, '\\'') "
663 "from data where name = '%s'";
665 if (!(ebn = escaped_basename(name)))
667 q = make_message(verbose? verbose_fmt : fmt, ebn);
669 result = get_result(q);
673 row = mysql_fetch_row(result);
676 ret = para_strdup(row[0]);
679 mysql_free_result(result);
681 ret = para_strdup("(not yet played)");
685 static char *get_dir(char *name)
687 char *ret = NULL, *q, *ebn;
691 if (!(ebn = escaped_basename(name)))
693 q = make_message("select dir from dir where name = '%s'", ebn);
695 result = get_result(q);
699 row = mysql_fetch_row(result);
701 ret = para_strdup(row[0]);
702 mysql_free_result(result);
706 /* never returns NULL */
707 static char *get_current_stream(void)
711 void *result = get_result("select def from streams where "
712 "name = 'current_stream'");
716 row = mysql_fetch_row(result);
719 ret = para_strdup(row[0]);
720 mysql_free_result(result);
724 mysql_free_result(result);
725 return para_strdup("(none)");
729 * Read stream definition of stream streamname and construct mysql
730 * query. Return NULL on errors. If streamname is NULL, use current
731 * stream. If that is also NULL, use query that selects everything.
732 * If filename is NULL, query will list everything, otherwise only
733 * the score of given file.
735 static char *get_query(char *streamname, char *filename, int with_path)
737 char *accept_opts = NULL, *deny_opts = NULL, *score = NULL;
738 char *where_clause, *order, *query;
739 char command[255] = ""; /* buffer for sscanf */
743 char *select_clause = NULL;
745 tmp = get_current_stream();
747 tmp = escape_str(streamname);
751 if (!strcmp(tmp, "(none)")) {
754 char *ret, *ebn = escaped_basename(filename);
757 ret = make_message("select to_days(now()) - "
758 "to_days(lastplayed) from data "
759 "where name = '%s'", ebn);
765 "select concat(dir.dir, '/', dir.name) "
766 "from data, dir where dir.name = data.name "
767 "order by data.lastplayed"
770 "select name from data where name is not NULL "
771 "order by lastplayed"
775 query = make_message("select def from streams where name = '%s'",
777 result = get_result(query);
782 row = mysql_fetch_row(result);
788 char *arg, *line = end;
790 if (!(end = strchr(line, '\n')))
794 if (sscanf(line, "%200s%n", command, &n) < 1)
797 if (!strcmp(command, "accept:")) {
798 char *tmp2 = s_a_r_list(mysql_macro_list, arg);
800 accept_opts = para_strcat(
801 accept_opts, " or ");
802 accept_opts = para_strcat(accept_opts, tmp2);
806 if (!strcmp(command, "deny:")) {
807 char *tmp2 = s_a_r_list(mysql_macro_list, arg);
809 deny_opts = para_strcat(deny_opts, " or ");
810 deny_opts = para_strcat(deny_opts, tmp2);
814 if (!score && !strcmp(command, "score:"))
815 score = s_a_r_list(mysql_macro_list, arg);
818 score = s_a_r_list(mysql_macro_list, conf.mysql_default_score_arg);
823 char *ebn = escaped_basename(filename);
826 select_clause = make_message("select %s from data ", score);
828 where_clause = make_message( "where name = '%s' ", ebn);
830 order = para_strdup("");
833 select_clause = para_strdup(with_path?
834 "select concat(dir.dir, '/', dir.name) from data, dir "
835 "where dir.name = data.name "
837 "select name from data where name is not NULL");
838 order = make_message("order by -(%s)", score);
840 if (accept_opts && deny_opts) {
841 where_clause = make_message("and ((%s) and not (%s)) ",
842 accept_opts, deny_opts);
845 if (accept_opts && !deny_opts) {
846 where_clause = make_message("and (%s) ", accept_opts);
849 if (!accept_opts && deny_opts) {
850 where_clause = make_message("and not (%s) ", deny_opts);
853 where_clause = para_strdup("");
855 query = make_message("%s %s %s", select_clause, where_clause, order);
865 mysql_free_result(result);
872 * This is called from server and from some commands. Name must not be NULL
873 * Never returns NULL.
875 static char *get_selector_info(char *name)
877 char *meta, *atts, *info, *dir, *query, *stream;
879 MYSQL_ROW row = NULL;
882 return para_strdup("(none)");
883 stream = get_current_stream();
884 meta = get_meta(name, 1);
885 atts = get_atts(name, 0);
888 query = get_query(stream, name, 0); /* FIXME: pass stream == NULL instead? */
891 result = get_result(query);
894 row = mysql_fetch_row(result);
896 info = make_message("dbinfo1:dir: %s\n"
897 "dbinfo2:stream: %s, %s, score: %s\n"
899 dir? dir : "(not contained in table)",
901 (result && row && row[0])? row[0] : "(no score)",
908 mysql_free_result(result);
912 /* might return NULL */
913 static char *get_current_audio_file(void)
917 name = para_basename(mmd->filename);
922 /* If called as child, mmd_lock must be held */
923 static void update_mmd(char *info)
925 PARA_DEBUG_LOG("%s", "updating shared memory area\n");
926 strncpy(mmd->selector_info, info, MMD_INFO_SIZE - 1);
927 mmd->selector_info[MMD_INFO_SIZE - 1] = '\0';
930 static void refresh_selector_info(void)
932 char *name = get_current_audio_file();
937 info = get_selector_info(name);
945 /* list attributes / print database info */
946 static int com_la_info(int fd, int argc, char *argv[])
948 char *name = NULL, *meta = NULL, *atts = NULL, *dir = NULL;
949 int ret, la = strcmp(argv[0], "info");
952 ret = -E_GET_AUDIO_FILE;
953 if (!(name = get_current_audio_file()))
955 ret = send_va_buffer(fd, "%s\n", name);
960 if (!(name = escaped_basename(argv[1])))
963 meta = get_meta(name, 1);
964 atts = get_atts(name, 0);
967 ret = send_va_buffer(fd, "%s\n", atts);
969 ret = send_va_buffer(fd, "dir: %s\n" "%s\n" "attributes: %s\n",
970 dir? dir : "(not contained in table)", meta, atts);
979 /* list attributes */
980 int com_la(int fd, int argc, char *argv[])
982 return com_la_info(fd, argc, argv);
985 /* print database info */
986 int com_info(int fd, int argc, char *argv[])
988 return com_la_info(fd, argc, argv);
991 static int change_stream(const char *stream)
995 query = make_message("update streams set def='%s' "
996 "where name = 'current_stream'", stream);
997 ret = real_query(query);
1002 static int get_pic_id_by_name(char *name)
1005 void *result = NULL;
1009 if (!(ebn = escaped_basename(name)))
1011 q = make_message("select pic_id from data where name = '%s'", ebn);
1013 result = get_result(q);
1017 row = mysql_fetch_row(result);
1021 mysql_free_result(result);
1025 static int remove_entry(const char *name)
1027 char *q, *ebn = escaped_basename(name);
1028 int ret = -E_ESCAPE;
1032 q = make_message("delete from data where name = '%s'", ebn);
1033 real_query(q); /* ignore errors */
1035 q = make_message("delete from dir where name = '%s'", ebn);
1036 real_query(q); /* ignore errors */
1044 static int add_entry(const char *name)
1046 char *q, *dn, *ebn = NULL, *edn = NULL;
1049 if (!name || !*name)
1050 return -E_MYSQL_SYNTAX;
1051 ebn = escaped_basename(name);
1054 ret = -E_MYSQL_SYNTAX;
1055 dn = para_dirname(name);
1059 edn = escape_str(dn);
1063 q = make_message("insert into data (name, pic_id) values "
1064 "('%s', '%s')", ebn, "1");
1065 ret = real_query(q);
1066 // ret = 1; PARA_DEBUG_LOG("q: %s\n", q);
1070 q = make_message("insert into dir (name, dir) values "
1071 "('%s', '%s')", ebn, edn);
1072 // ret = 1; PARA_DEBUG_LOG("q: %s\n", q);
1073 ret = real_query(q);
1084 * remove/add entries
1086 static int com_rm_ne(__a_unused int fd, int argc, char *argv[])
1088 int ne = !strcmp(argv[0], "ne");
1091 return -E_MYSQL_SYNTAX;
1092 for (i = 1; i < argc; i++) {
1093 ret = remove_entry(argv[i]);
1098 ret = add_entry(argv[i]);
1108 int com_rm(int fd, int argc, char *argv[])
1110 return com_rm_ne(fd, argc, argv);
1116 int com_ne(int fd, int argc, char *argv[])
1118 return com_ne(fd, argc, argv);
1124 int com_mv(__a_unused int fd, int argc, char *argv[])
1126 char *q, *dn, *ebn1 = NULL, *ebn2 = NULL, *edn = NULL;
1130 return -E_MYSQL_SYNTAX;
1132 ebn1 = escaped_basename(argv[1]);
1133 ebn2 = escaped_basename(argv[2]);
1134 if (!ebn1 || !ebn2 || !*ebn1 || !*ebn2)
1136 ret = -E_MYSQL_SYNTAX;
1137 if (!strcmp(ebn1, ebn2))
1139 remove_entry(argv[2]); /* no need to escape, ignore error */
1140 q = make_message("update data set name = '%s' where name = '%s'",
1142 ret = real_query(q);
1146 ret = -E_AUDIO_FILE;
1147 if (!mysql_affected_rows(mysql_ptr))
1149 q = make_message("update dir set name = '%s' where name = '%s'",
1151 ret = real_query(q);
1157 dn = para_dirname(argv[2]);
1161 edn = escape_str(dn);
1168 q = make_message("update dir set dir = '%s' where name = '%s'",
1170 ret = real_query(q);
1182 static int com_set(__a_unused int fd, int argc, char *argv[])
1187 const char *field = strcmp(argv[0], "picass")? "numplayed" : "pic_id";
1190 return -E_MYSQL_SYNTAX;
1192 for (i = 2; i < argc; i++) {
1193 ebn = escaped_basename(argv[i]);
1196 q = make_message("update data set %s = %lu "
1197 "where name = '%s'", field, id, ebn);
1199 ret = real_query(q);
1208 * snp: set numplayed
1210 int com_picass(int fd, int argc, char *argv[])
1212 return com_set(fd, argc, argv);
1216 * snp: set numplayed
1218 int com_snp(int fd, int argc, char *argv[])
1220 int ret = com_set(fd, argc, argv);
1222 refresh_selector_info();
1227 * picch: change entry's name in pics table
1229 int com_picch(__a_unused int fd, int argc, char *argv[])
1236 return -E_MYSQL_SYNTAX;
1239 tmp = escape_str(argv[2]);
1242 q = make_message("update pics set name = '%s' where id = %lu", tmp, id);
1244 ret = real_query(q);
1250 * piclist: print list of pics in db
1252 int com_piclist(__a_unused int fd, int argc, __a_unused char *argv[])
1254 void *result = NULL;
1256 unsigned long *length;
1260 return -E_MYSQL_SYNTAX;
1261 result = get_result("select id,name,pic from pics order by id");
1264 while ((row = mysql_fetch_row(result))) {
1265 length = mysql_fetch_lengths(result);
1266 if (!row || !row[0] || !row[1] || !row[2])
1268 ret = send_va_buffer(fd, "%s\t%lu\t%s\n", row[0], length[2], row[1]);
1274 mysql_free_result(result);
1279 * picdel: delete picture from database
1281 int com_picdel(int fd, int argc, char *argv[])
1289 return -E_MYSQL_SYNTAX;
1290 for (i = 1; i < argc; i++) {
1292 q = make_message("delete from pics where id = %lu", id);
1293 ret = real_query(q);
1297 aff = mysql_affected_rows(mysql_ptr);
1299 ret = send_va_buffer(fd, "No such id: %lu\n", id);
1304 q = make_message("update data set pic_id = 1 where pic_id = %lu", id);
1305 ret = real_query(q);
1311 * pic: get picture by name or by number
1313 int com_pic(int fd, int argc, char *argv[])
1315 void *result = NULL;
1317 unsigned long *length, id;
1319 char *q, *name = NULL;
1322 ret = -E_GET_AUDIO_FILE;
1323 name = get_current_audio_file();
1326 name = escaped_basename(argv[1]);
1331 id = atoi(name + 1);
1333 id = get_pic_id_by_name(name);
1337 q = make_message("select pic from pics where id = '%lu'", id);
1338 result = get_result(q);
1342 row = mysql_fetch_row(result);
1344 if (!row || !row[0])
1346 length = mysql_fetch_lengths(result);
1347 ret = send_bin_buffer(fd, row[0], *length);
1349 mysql_free_result(result);
1354 int com_strdel(__a_unused int fd, int argc, char *argv[])
1360 return -E_MYSQL_SYNTAX;
1361 tmp = escape_str(argv[1]);
1364 q = make_message("delete from streams where name='%s'", tmp);
1366 ret = real_query(q);
1374 int com_ls(int fd, int argc, char *argv[])
1379 my_ulonglong num_rows, top = 0, left = 0, right = 0;
1382 return -E_MYSQL_SYNTAX;
1384 char *tmp = escape_str(argv[1]);
1387 q = make_message("select name from data where name like '%s'",
1391 q = para_strdup("select name from data");
1392 result = get_result(q);
1396 num_rows = mysql_num_rows(result);
1399 ret = print_results(fd, result, top, left, num_rows - 1, right);
1400 mysql_free_result(result);
1407 int com_summary(__a_unused int fd, int argc, __a_unused char *argv[])
1412 void *result2 = NULL;
1413 const char *fmt = "select count(name) from data where %s='1'";
1414 int ret = -E_NORESULT;
1417 return -E_MYSQL_SYNTAX;
1418 result = get_all_attributes();
1421 while ((row = mysql_fetch_row(result))) {
1428 buf = make_message(fmt, row[0]);
1429 result2 = get_result(buf);
1434 row2 = mysql_fetch_row(result2);
1435 if (!row2 || !row2[0])
1437 ret = send_va_buffer(fd, "%s\t%s\n", row[0], row2[0]);
1444 mysql_free_result(result2);
1446 mysql_free_result(result);
1450 static int get_numplayed(char *name)
1454 const char *fmt = "select numplayed from data where name = '%s'";
1455 char *buf = make_message(fmt, name);
1456 int ret = -E_NORESULT;
1458 result = get_result(buf);
1463 row = mysql_fetch_row(result);
1464 if (!row || !row[0])
1469 mysql_free_result(result);
1473 static int update_audio_file(char *name)
1476 const char *fmt1 = "update data set lastplayed = now() where name = '%s'";
1477 const char *fmt2 = "update data set numplayed = %i where name = '%s'";
1479 char *ebn = escaped_basename(name);
1484 q = make_message(fmt1, ebn);
1485 ret = real_query(q);
1489 ret = get_numplayed(ebn);
1492 q = make_message(fmt2, ret + 1, ebn);
1493 ret = real_query(q);
1500 static void update_audio_file_server_handler(char *name)
1503 info = get_selector_info(name);
1506 update_audio_file(name);
1509 int com_us(__a_unused int fd, int argc, char *argv[])
1515 return -E_MYSQL_SYNTAX;
1516 tmp = escape_str(argv[1]);
1519 ret = update_audio_file(argv[1]);
1522 refresh_selector_info();
1526 /* select previous / next stream */
1527 static int com_ps_ns(__a_unused int fd, int argc, char *argv[])
1529 char *query, *stream = get_current_stream();
1530 void *result = get_result("select name from streams");
1533 my_ulonglong num_rows, match, i;
1535 ret = -E_MYSQL_SYNTAX;
1541 num_rows = mysql_num_rows(result);
1542 ret = -E_EMPTY_RESULT;
1546 for (i = 0; i < num_rows; i++) {
1547 row = mysql_fetch_row(result);
1548 if (!row || !row[0])
1550 if (!strcmp(row[0], "current_stream"))
1552 if (!strcmp(row[0], stream))
1559 if (!strcmp(argv[0], "ps"))
1560 i = match > 0? match - 1 : num_rows - 1;
1562 i = match < num_rows - 1? match + 1 : 0;
1564 mysql_data_seek(result, i);
1565 row = mysql_fetch_row(result);
1566 if (!row || !row[0])
1568 if (!strcmp(row[0], "current_stream")) {
1569 if (!strcmp(argv[0], "ps")) {
1570 i = match < 2? match + num_rows - 2 : match - 2;
1573 i = i > num_rows - 1? i - num_rows : i;
1575 mysql_data_seek(result, i);
1576 row = mysql_fetch_row(result);
1577 if (!row || !row[0])
1580 query = make_message("update streams set def='%s' where name = "
1581 "'current_stream'", row[0]);
1582 ret = real_query(query);
1584 refresh_selector_info();
1588 mysql_free_result(result);
1592 /* select previous stream */
1593 int com_ps(int fd, int argc, char *argv[])
1595 return com_ps_ns(fd, argc, argv);
1598 /* select next stream */
1599 int com_ns(int fd, int argc, char *argv[])
1601 return com_ps_ns(fd, argc, argv);
1605 int com_streams(int fd, int argc, __a_unused char *argv[])
1607 unsigned int num_rows;
1608 int i, ret = -E_NORESULT;
1612 if (argc > 1 && strcmp(argv[1], "current_stream"))
1613 return -E_MYSQL_SYNTAX;
1615 char *cs = get_current_stream();
1616 ret = send_va_buffer(fd, "%s\n", cs);
1620 result = get_result("select name from streams");
1623 num_rows = mysql_num_rows(result);
1628 for (i = 0; i < num_rows; i++) {
1629 row = mysql_fetch_row(result);
1630 if (!row || !row[0])
1632 if (strcmp(row[0], "current_stream"))
1633 send_va_buffer(fd, "%s\n", row[0]);
1638 mysql_free_result(result);
1642 /* query stream definition */
1643 int com_strq(int fd, int argc, char *argv[])
1651 ret = -E_GET_STREAM;
1652 name = get_current_stream();
1655 name = escaped_basename(argv[1]);
1660 query = make_message("select def from streams where name='%s'", name);
1662 result = get_result(query);
1667 row = mysql_fetch_row(result);
1668 if (!row || !row[0])
1670 /* no '\n' needed */
1671 ret = send_buffer(fd, row[0]);
1674 mysql_free_result(result);
1678 /* change stream / change stream and play */
1679 static int com_cs_csp(int fd, int argc, char *argv[])
1681 int ret, stream_change;
1682 char *query, *stream = NULL;
1683 char *old_stream = get_current_stream();
1684 int csp = !strcmp(argv[0], "csp");
1686 ret = -E_MYSQL_SYNTAX;
1692 ret = send_va_buffer(fd, "%s\n", old_stream);
1696 /* test if stream is valid, no need to escape argv[1] */
1697 query = get_query(argv[1], NULL, 0);
1702 stream = escape_str(argv[1]);
1705 stream_change = strcmp(stream, old_stream);
1706 if (stream_change) {
1707 ret = change_stream(stream);
1710 refresh_selector_info();
1714 mmd->new_vss_status_flags |= VSS_PLAYING;
1716 mmd->new_vss_status_flags |= VSS_NEXT;
1727 int com_cs(int fd, int argc, char *argv[])
1729 return com_cs_csp(fd, argc, argv);
1732 /* change stream and play */
1733 int com_csp(int fd, int argc, char *argv[])
1735 return com_cs_csp(fd, argc, argv);
1738 /* score list / skip */
1739 static int com_sl_skip(int fd, int argc, char *argv[])
1741 void *result = NULL;
1743 int ret, i, skip = !strcmp(argv[0], "skip");
1744 char *query, *stream, *tmp;
1745 unsigned int num_rows, num;
1748 return -E_MYSQL_SYNTAX;
1749 num = atoi(argv[1]);
1751 return -E_MYSQL_SYNTAX;
1753 stream = get_current_stream();
1755 return -E_GET_STREAM;
1757 stream = escape_str(argv[2]);
1761 tmp = get_query(stream, NULL, 0);
1764 return -E_GET_QUERY;
1765 query = make_message("%s limit %d", tmp, num);
1768 result = get_result(query);
1772 ret = -E_EMPTY_RESULT;
1773 num_rows = mysql_num_rows(result);
1776 for (i = 0; i < num_rows && i < num; i++) {
1777 row = mysql_fetch_row(result);
1779 send_va_buffer(fd, "Skipping %s\n", row[0]);
1780 update_audio_file(row[0]);
1782 send_va_buffer(fd, "%s\n", row[0]? row[0]: "BUG");
1787 mysql_free_result(result);
1792 int com_sl(int fd, int argc, char *argv[])
1794 return com_sl_skip(fd, argc, argv);
1798 int com_skip(int fd, int argc, char *argv[])
1800 return com_sl_skip(fd, argc, argv);
1804 * update attributes of name
1806 static int update_atts(int fd, char *name, char *atts)
1809 char *ebn, *q, *old, *new = NULL;
1813 ebn = escaped_basename(name);
1816 q = make_message("update data set %s where name = '%s'", atts, ebn);
1817 old = get_atts(ebn, 0);
1818 send_va_buffer(fd, "old: %s\n", old);
1820 ret = real_query(q);
1824 new = get_atts(ebn, 0);
1825 ret = send_va_buffer(fd, "new: %s\n", new);
1835 int com_sa(int fd, int argc, char *argv[])
1838 char *atts = NULL, *name;
1841 return -E_MYSQL_SYNTAX;
1842 for (i = 1; i < argc; i++) {
1844 char *esc, *tmp, *p =argv[i];
1845 int len = strlen(p);
1849 switch (p[len - 1]) {
1860 esc = escape_str(p);
1863 tmp = make_message("%s%s='%s'", atts? "," : "", esc,
1866 atts = para_strcat(atts, tmp);
1872 if (i >= argc) { /* no name given, use current af */
1873 ret = -E_GET_AUDIO_FILE;
1874 if (!(name = get_current_audio_file()))
1876 ret = update_atts(fd, name, atts);
1880 for (; argv[i] && ret >= 0; i++)
1881 ret = update_atts(fd, argv[i], atts);
1883 refresh_selector_info();
1892 int com_cam(int fd, int argc, char *argv[])
1894 char *name = NULL, *meta = NULL, *atts = NULL;
1898 return -E_MYSQL_SYNTAX;
1899 if (!(name = escaped_basename(argv[1])))
1902 if (!(atts = get_atts(name, 1)))
1905 if (!(meta = get_meta(name, 0)))
1907 for (i = 2; i < argc; i++) {
1910 if (!(ebn = escaped_basename(argv[i])))
1912 ret = send_va_buffer(fd, "updating %s\n", ebn);
1917 q = make_message("update data set %s where name = '%s'",
1919 if ((ret = update_atts(fd, ebn, atts)) >= 0)
1920 ret = real_query(q);
1940 static int com_vrfy_clean(int fd, int argc, __a_unused char *argv[])
1943 int ret, vrfy_mode = strcmp(argv[0], "clean");
1944 void *result = NULL;
1947 my_ulonglong num_rows, top = 0, left = 0, right = 0;
1950 return -E_MYSQL_SYNTAX;
1952 result = get_result("select data.name from data left join dir on "
1953 "dir.name = data.name where dir.name is NULL");
1956 num_rows = mysql_num_rows(result);
1958 ret = send_buffer(fd, "No invalid entries\n");
1962 send_va_buffer(fd, "found %i invalid entr%s\n", num_rows,
1963 num_rows == 1? "y" : "ies");
1964 ret = print_results(fd, result, top, left, num_rows - 1, right);
1967 while ((row = mysql_fetch_row(result))) {
1972 escaped_name = escape_str(row[0]);
1975 send_va_buffer(fd, "deleting %s\n", escaped_name);
1976 query = make_message("delete from data where name = '%s'",
1978 ret = real_query(query);
1986 mysql_free_result(result);
1993 int com_vrfy(int fd, int argc, char **argv)
1995 return com_vrfy_clean(fd, argc, argv);
2001 int com_clean(int fd, int argc, char **argv)
2003 return com_vrfy_clean(fd, argc, argv);
2006 static FILE *out_file;
2008 static int mysql_write_tmp_file(const char *dir, const char *name)
2010 int ret = -E_TMPFILE;
2011 char *msg = make_message("%s\t%s\n", dir, name);
2012 if (fputs(msg, out_file) != EOF)
2021 int com_upd(int fd, int argc, __a_unused char *argv[])
2023 char *tempname = NULL, *query = NULL;
2024 int ret, out_fd = -1, num = 0;
2025 void *result = NULL;
2026 unsigned int num_rows;
2030 return -E_MYSQL_SYNTAX;
2032 tempname = para_strdup("/tmp/mysql.tmp.XXXXXX");
2033 ret = para_mkstemp(tempname, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
2037 out_file = fdopen(out_fd, "w");
2042 if (find_audio_files(conf.mysql_audio_file_dir_arg, mysql_write_tmp_file) < 0)
2044 num = ftell(out_file);
2046 * we have to make sure the file hit the disk before we call
2051 PARA_DEBUG_LOG("wrote tempfile %s (%d bytes)\n", tempname, num);
2054 if ((ret = real_query("delete from dir")) < 0)
2056 query = make_message("load data infile '%s' ignore into table dir "
2057 "fields terminated by '\t' lines terminated by '\n' "
2058 "(dir, name)", tempname);
2059 ret = real_query(query);
2063 result = get_result("select dir.name from dir left join data on "
2064 "data.name = dir.name where data.name is NULL");
2068 num_rows = mysql_num_rows(result);
2070 ret = send_buffer(fd, "no new entries\n");
2073 while ((row = mysql_fetch_row(result))) {
2078 send_va_buffer(fd, "new entry: %s\n", row[0]);
2079 erow = escape_str(row[0]);
2082 query = make_message("insert into data (name, pic_id) values "
2083 "('%s','%s')", erow, "1");
2085 ret = real_query(query);
2098 mysql_free_result(result);
2102 static char **server_get_audio_file_list(unsigned int num)
2104 char **list = para_malloc((num + 1) * sizeof(char *));
2105 char *tmp, *query, *stream = get_current_stream();
2106 void *result = NULL;
2107 unsigned int num_rows;
2111 tmp = get_query(stream, NULL, 1);
2115 query = make_message("%s limit %d", tmp, num);
2117 result = get_result(query);
2121 num_rows = mysql_num_rows(result);
2124 for (i = 0; i < num_rows && i < num; i++) {
2125 row = mysql_fetch_row(result);
2126 if (!row || !row[0])
2128 list[i] = para_strdup(row[0]);
2141 mysql_free_result(result);
2146 * connect to mysql server, return mysql pointer on success, -E_NOTCONN
2147 * on errors. Called from parent on startup and also from com_cdb().
2149 static int init_mysql_server(void)
2151 char *u = conf.mysql_user_arg? conf.mysql_user_arg : para_logname();
2154 mysql_ptr = mysql_init(NULL);
2156 PARA_CRIT_LOG("%s", "mysql init error\n");
2159 if (conf.mysql_port_arg < 0)
2160 return -E_MYSQL_SYNTAX;
2161 port = conf.mysql_port_arg;
2162 PARA_DEBUG_LOG("connecting: %s@%s:%d\n", u, conf.mysql_host_arg, port);
2163 if (!conf.mysql_user_arg)
2166 * If host is NULL a connection to the local host is assumed,
2167 * If user is NULL, the current user is assumed
2169 if (!(mysql_ptr = mysql_real_connect(mysql_ptr,
2170 conf.mysql_host_arg,
2171 conf.mysql_user_arg,
2172 conf.mysql_passwd_arg,
2173 conf.mysql_database_arg,
2175 PARA_CRIT_LOG("%s", "connect error\n");
2178 PARA_INFO_LOG("%s", "success\n");
2182 /* mmd lock must be held */
2183 static void write_msg2mmd(int success)
2185 sprintf(mmd->selector_info, "dbinfo1:%s\ndbinfo2:mysql-%s\ndbinfo3:\n",
2186 success < 0? PARA_STRERROR(-success) :
2187 "successfully connected to mysql server",
2188 success < 0? "" : mysql_get_server_info(mysql_ptr));
2191 /* create database */
2192 int com_cdb(int fd, int argc, char *argv[])
2198 PARA_INFO_LOG("%s", "closing database\n");
2199 mysql_close(mysql_ptr);
2201 /* dont use any database */
2202 conf.mysql_database_arg = NULL; /* leak? */
2203 ret = -E_MYSQL_INIT;
2204 if (init_mysql_server() < 0 || !mysql_ptr)
2207 conf.mysql_database_arg = para_strdup("paraslash");
2210 conf.mysql_database_arg = escape_str(argv[1]);
2211 if (!conf.mysql_database_arg)
2214 query = make_message("create database %s", conf.mysql_database_arg);
2215 ret = real_query(query);
2219 /* reconnect with database just created */
2220 mysql_close(mysql_ptr);
2221 ret = -E_MYSQL_INIT;
2222 if (init_mysql_server() < 0 || !mysql_ptr)
2228 if (real_query("create table data (name varchar(255) binary not null "
2230 "lastplayed datetime not null default "
2232 "numplayed int not null default 0, "
2233 "pic_id bigint unsigned not null default 1)") < 0)
2235 if (real_query("create table dir (name varchar(255) binary not null "
2236 "primary key, dir varchar(255) default null)") < 0)
2238 if (real_query("create table pics ("
2239 "id bigint(20) unsigned not null primary key "
2241 "name varchar(255) binary not null, "
2242 "pic mediumblob not null)") < 0)
2244 if (real_query("create table streams ("
2245 "name varchar(255) binary not null primary key, "
2246 "def blob not null)") < 0)
2248 if (real_query("insert into streams (name, def) values "
2249 "('current_stream', '(none)')") < 0)
2251 ret = send_va_buffer(fd, "successfully created database %s\n",
2252 conf.mysql_database_arg);
2257 static void shutdown_connection(void)
2260 PARA_NOTICE_LOG("%s", "shutting down mysql connection\n");
2261 mysql_close(mysql_ptr);
2267 * the init function of the mysql-based audio file selector
2269 * \param db pointer to the struct to initialize
2271 * Check the command line options and initialize all function pointers of \a
2272 * db. Connect to the mysql server and initialize the info string.
2274 * \return This function returns success even if it could not connect
2275 * to the mysql server. This is because the connect is expected to fail
2276 * if there the paraslash database is not yet created. This gives the
2277 * user a chance to send the "cdb" to create the database.
2279 * \sa struct audio_file_selector, misc_meta_data::selector_info,
2282 int mysql_selector_init(struct audio_file_selector *db)
2286 if (!conf.mysql_passwd_given)
2287 return -E_NO_MYSQL_PASSWD;
2288 if (!conf.mysql_audio_file_dir_given)
2289 return -E_NO_AF_DIR;
2291 db->cmd_list = mysql_selector_cmds;
2292 db->get_audio_file_list = server_get_audio_file_list;
2293 db->update_audio_file = update_audio_file_server_handler;
2294 db->shutdown = shutdown_connection;
2295 ret = init_mysql_server();
2297 PARA_WARNING_LOG("%s\n", PARA_STRERROR(-ret));
2299 return 1; /* return success even if connect failed to give the
2300 * user the chance to exec com_cdb