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 struct para_macro 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(struct para_macro *macro_list, char *src)
151 struct para_macro *mp = macro_list;
152 char *ret = NULL, *tmp = para_strdup(src);
155 ret = s_a_r(tmp, mp->name, mp->replacement);
157 if (!ret) /* syntax error */
162 //PARA_DEBUG_LOG("%s: returning %s\n", __func__, dest);
166 static int real_query(const char *query)
170 PARA_DEBUG_LOG("%s\n", query);
171 if (mysql_real_query(mysql_ptr, query, strlen(query))) {
172 PARA_ERROR_LOG("real_query error (%s)\n",
173 mysql_error(mysql_ptr));
180 * Use open connection given by mysql_ptr to query server. Returns a
181 * result pointer on succes and NULL on errors
183 static struct MYSQL_RES *get_result(const char *query)
187 if (real_query(query) < 0)
189 result = mysql_store_result(mysql_ptr);
191 PARA_ERROR_LOG("%s", "store_result error\n");
195 * write input from fd to dynamically allocated char array,
196 * but maximal max_size byte. Return size.
198 static int fd2buf(int fd, char **buf_ptr, size_t max_size)
200 const size_t chunk_size = 1024;
202 char *buf = para_malloc(size * sizeof(char)), *p = buf;
205 while ((ret = recv_bin_buffer(fd, p, chunk_size)) > 0) {
207 if ((p - buf) + chunk_size >= size) {
211 if (size > max_size) {
215 tmp = para_realloc(buf, size);
230 static char *escape_blob(const char* old, int size)
234 if (!mysql_ptr || size < 0)
236 new = para_malloc(2 * size * sizeof(char) + 1);
237 mysql_real_escape_string(mysql_ptr, new, old, size);
241 static char *escape_str(const char* old)
243 return escape_blob(old, strlen(old));
246 static char *escaped_basename(const char *name)
248 char *esc, *bn = para_basename(name);
252 esc = escape_str(bn);
260 int com_na(__a_unused int fd, int argc, char *argv[])
266 return -E_MYSQL_SYNTAX;
267 tmp = escape_str(argv[1]);
270 q = make_message("alter table data add %s char(1) "
271 "not null default 0", tmp);
281 int com_da(__a_unused int fd, int argc, char *argv[])
287 return -E_MYSQL_SYNTAX;
288 tmp = escape_str(argv[1]);
291 q = make_message("alter table data drop %s", tmp);
299 static int com_stradd_picadd(int fd, int argc, char *argv[])
301 char *blob = NULL, *esc_blob = NULL, *q = NULL, *tmp = NULL;
302 const char *fmt, *del_fmt;
303 int ret, stradd = strcmp(argv[0], "picadd");
307 return -E_MYSQL_SYNTAX;
308 if (strlen(argv[1]) >= MAXLINE - 1)
309 return -E_NAMETOOLONG;
314 fmt = "insert into streams (name, def) values ('%s','%s')";
315 del_fmt="delete from streams where name='%s'";
317 size = MEDIUM_BLOB_SIZE;
318 fmt = "insert into pics (name, pic) values ('%s','%s')";
319 del_fmt="delete from pics where pic='%s'";
321 tmp = escape_str(argv[1]);
324 q = make_message(del_fmt, tmp);
330 if ((ret = send_buffer(fd, AWAITING_DATA_MSG) < 0))
332 if ((ret = fd2buf(fd, &blob, size)) < 0)
338 esc_blob = escape_blob(blob, size);
341 tmp = escape_str(argv[1]);
344 q = make_message(fmt, tmp, esc_blob);
355 int com_stradd(int fd, int argc, char *argv[])
357 return com_stradd_picadd(fd, argc, argv);
361 int com_picadd(int fd, int argc, char *argv[])
363 return com_stradd_picadd(fd, argc, argv);
367 * print results to fd
369 static int print_results(int fd, void *result,
370 unsigned int top, unsigned int left,
371 unsigned int bottom, unsigned int right)
377 for (i = top; i <= bottom; i++) {
378 row = mysql_fetch_row(result);
381 for (j = left; j <= right; j++) {
382 ret = send_va_buffer(fd, j == left? "%s" : "\t%s",
383 row[j]? row[j] : "NULL");
387 ret = send_buffer(fd, "\n");
397 int com_verb(int fd, int argc, char *argv[])
401 unsigned int num_rows, num_fields;
405 return -E_MYSQL_SYNTAX;
406 tmp = escape_str(argv[1]);
409 result = get_result(tmp);
412 /* return success, because it's ok to have no results */
414 num_fields = mysql_field_count(mysql_ptr);
415 num_rows = mysql_num_rows(result);
417 if (num_fields && num_rows)
418 ret = print_results(fd, result, 0, 0, num_rows - 1,
420 mysql_free_result(result);
424 /* returns NULL on errors or if there are no atts defined yet */
425 static void *get_all_attributes(void)
427 void *result = get_result("desc data");
428 unsigned int num_rows;
432 num_rows = mysql_num_rows(result);
434 mysql_free_result(result);
437 mysql_data_seek(result, 4); /* skip Lastplayed, Numplayed... */
442 * list all attributes
444 int com_laa(int fd, int argc, __a_unused char *argv[])
450 return -E_MYSQL_SYNTAX;
451 result = get_all_attributes();
454 ret = print_results(fd, result, 0, 0, mysql_num_rows(result) - 5, 0);
455 mysql_free_result(result);
462 int com_hist(int fd, int argc, char *argv[]) {
466 unsigned int num_rows;
469 return -E_MYSQL_SYNTAX;
471 char *tmp = escape_str(argv[1]);
474 atts = make_message("where %s = '1'", tmp);
477 atts = para_strdup(NULL);
479 q = make_message("select name, to_days(now()) - to_days(lastplayed) from "
480 "data %s order by lastplayed", atts);
482 result = get_result(q);
486 num_rows = mysql_num_rows(result);
489 ret = print_results(fd, result, 0, 0, num_rows - 1, 1);
490 mysql_free_result(result);
495 * get last num audio files
497 int com_last(int fd, int argc, char *argv[])
508 return -E_MYSQL_SYNTAX;
509 q = make_message("select name from data order by lastplayed desc "
511 result = get_result(q);
515 ret = print_results(fd, result, 0, 0, mysql_num_rows(result) - 1, 0);
516 mysql_free_result(result);
520 int com_mbox(int fd, int argc, char *argv[])
525 unsigned int num_rows, num_fields;
526 char *query = para_strdup("select concat('From foo@localhost ', "
527 "date_format(Lastplayed, '%a %b %e %T %Y'), "
528 "'\nReceived: from\nTo: bar\n");
531 result = get_all_attributes();
535 while ((row = mysql_fetch_row(result))) {
540 tmp = make_message("%s X-Attribute-%s: ', %s, '\n", query,
545 query = para_strcat(query,
553 char *esc = escape_str(argv[1]), *tmp;
557 tmp = make_message("%s where name LIKE '%s'", query, esc);
562 mysql_free_result(result);
564 result = get_result(query);
567 ret = -E_EMPTY_RESULT;
568 num_fields = mysql_field_count(mysql_ptr);
569 num_rows = mysql_num_rows(result);
570 if (!num_fields || !num_rows)
572 ret = print_results(fd, result, 0, 0, num_rows - 1, num_fields - 1);
576 mysql_free_result(result);
580 /* get attributes by name. If verbose is not 0, get_a writes a string
581 * into atts of the form 'att1="0",att2="1"', which is used in com_cam
582 * for contructing a mysql update query.
583 * never 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 unsigned int num_fields;
594 result2 = get_all_attributes();
598 if (!(ebn = escaped_basename(name)))
600 buf = make_message("select * from data where name='%s'", ebn);
603 result = get_result(buf);
607 ret = -E_EMPTY_RESULT;
608 num_fields = mysql_num_fields(result);
611 mysql_data_seek(result2, 4); /* skip Lastplayed, Numplayed... */
612 row = mysql_fetch_row(result);
616 for (i = 4; i < num_fields; i++) {
617 int is_set = row[i] && !strcmp(row[i], "1");
618 row2 = mysql_fetch_row(result2);
619 if (!row2 || !row2[0])
621 if (atts && (verbose || is_set))
622 atts = para_strcat(atts, verbose? "," : " ");
623 if (is_set || verbose)
624 atts = para_strcat(atts, row2[0]);
626 atts = para_strcat(atts, is_set? "=\"1\"" : "=\"0\"");
631 mysql_free_result(result2);
633 mysql_free_result(result);
634 if (!atts && !verbose)
635 atts = para_strdup("(none)");
639 /* never returns NULL in verbose mode */
640 static char *get_meta(char *name, int verbose)
644 char *ebn, *q, *ret = NULL;
645 const char *verbose_fmt =
646 "select concat('lastplayed: ', "
647 "(to_days(now()) - to_days(lastplayed)),"
648 "' day(s). numplayed: ', numplayed, "
649 "', pic: ', pic_id) "
650 "from data where name = '%s'";
651 /* is that really needed? */
652 const char *fmt = "select concat('lastplayed=\\'', lastplayed, "
653 "'\\', numplayed=\\'', numplayed, "
654 "'\\', pic_id=\\'', pic_id, '\\'') "
655 "from data where name = '%s'";
657 if (!(ebn = escaped_basename(name)))
659 q = make_message(verbose? verbose_fmt : fmt, ebn);
661 result = get_result(q);
665 row = mysql_fetch_row(result);
668 ret = para_strdup(row[0]);
671 mysql_free_result(result);
673 ret = para_strdup("(not yet played)");
677 static char *get_dir(char *name)
679 char *ret = NULL, *q, *ebn;
683 if (!(ebn = escaped_basename(name)))
685 q = make_message("select dir from dir where name = '%s'", ebn);
687 result = get_result(q);
691 row = mysql_fetch_row(result);
693 ret = para_strdup(row[0]);
694 mysql_free_result(result);
698 /* never returns NULL */
699 static char *get_current_stream(void)
703 void *result = get_result("select def from streams where "
704 "name = 'current_stream'");
708 row = mysql_fetch_row(result);
711 ret = para_strdup(row[0]);
712 mysql_free_result(result);
716 mysql_free_result(result);
717 return para_strdup("(none)");
721 * Read stream definition of stream streamname and construct mysql
722 * query. Return NULL on errors. If streamname is NULL, use current
723 * stream. If that is also NULL, use query that selects everything.
724 * If filename is NULL, query will list everything, otherwise only
725 * the score of given file.
727 static char *get_query(char *streamname, char *filename, int with_path)
729 char *accept_opts = NULL, *deny_opts = NULL, *score = NULL;
730 char *where_clause, *order, *query;
731 char command[255] = ""; /* buffer for sscanf */
735 char *select_clause = NULL;
737 tmp = get_current_stream();
739 tmp = escape_str(streamname);
743 if (!strcmp(tmp, "(none)")) {
746 char *ret, *ebn = escaped_basename(filename);
749 ret = make_message("select to_days(now()) - "
750 "to_days(lastplayed) from data "
751 "where name = '%s'", ebn);
757 "select concat(dir.dir, '/', dir.name) "
758 "from data, dir where dir.name = data.name "
759 "order by data.lastplayed"
762 "select name from data where name is not NULL "
763 "order by lastplayed"
767 query = make_message("select def from streams where name = '%s'",
769 result = get_result(query);
774 row = mysql_fetch_row(result);
780 char *arg, *line = end;
782 if (!(end = strchr(line, '\n')))
786 if (sscanf(line, "%200s%n", command, &n) < 1)
789 if (!strcmp(command, "accept:")) {
790 char *tmp2 = s_a_r_list(macro_list, arg);
792 accept_opts = para_strcat(
793 accept_opts, " or ");
794 accept_opts = para_strcat(accept_opts, tmp2);
798 if (!strcmp(command, "deny:")) {
799 char *tmp2 = s_a_r_list(macro_list, arg);
801 deny_opts = para_strcat(deny_opts, " or ");
802 deny_opts = para_strcat(deny_opts, tmp2);
806 if (!score && !strcmp(command, "score:"))
807 score = s_a_r_list(macro_list, arg);
810 score = s_a_r_list(macro_list, conf.mysql_default_score_arg);
815 char *ebn = escaped_basename(filename);
818 select_clause = make_message("select %s from data ", score);
820 where_clause = make_message( "where name = '%s' ", ebn);
822 order = para_strdup("");
825 select_clause = para_strdup(with_path?
826 "select concat(dir.dir, '/', dir.name) from data, dir "
827 "where dir.name = data.name "
829 "select name from data where name is not NULL");
830 order = make_message("order by -(%s)", score);
832 if (accept_opts && deny_opts) {
833 where_clause = make_message("and ((%s) and not (%s)) ",
834 accept_opts, deny_opts);
837 if (accept_opts && !deny_opts) {
838 where_clause = make_message("and (%s) ", accept_opts);
841 if (!accept_opts && deny_opts) {
842 where_clause = make_message("and not (%s) ", deny_opts);
845 where_clause = para_strdup("");
847 query = make_message("%s %s %s", select_clause, where_clause, order);
857 mysql_free_result(result);
864 * This is called from server and from some commands. Name must not be NULL
865 * Never returns NULL.
867 static char *get_selector_info(char *name)
869 char *meta, *atts, *info, *dir, *query, *stream;
871 MYSQL_ROW row = NULL;
874 return para_strdup("(none)");
875 stream = get_current_stream();
876 meta = get_meta(name, 1);
877 atts = get_atts(name, 0);
880 query = get_query(stream, name, 0); /* FIXME: pass stream == NULL instead? */
883 result = get_result(query);
886 row = mysql_fetch_row(result);
888 info = make_message("dbinfo1:dir: %s\n"
889 "dbinfo2:stream: %s, %s, score: %s\n"
891 dir? dir : "(not contained in table)",
893 (result && row && row[0])? row[0] : "(no score)",
900 mysql_free_result(result);
905 /* might return NULL */
906 static char *get_current_audio_file(void)
910 name = para_basename(mmd->filename);
915 /* list attributes / print database info */
916 static int com_la_info(int fd, int argc, char *argv[])
918 char *name = NULL, *meta = NULL, *atts = NULL, *dir = NULL;
919 int ret, com_la = strcmp(argv[0], "info");
922 ret = -E_GET_AUDIO_FILE;
923 if (!(name = get_current_audio_file()))
925 ret = send_va_buffer(fd, "%s\n", name);
930 if (!(name = escaped_basename(argv[1])))
933 meta = get_meta(name, 1);
934 atts = get_atts(name, 0);
937 ret = send_va_buffer(fd, "%s\n", atts);
939 ret = send_va_buffer(fd, "dir: %s\n" "%s\n" "attributes: %s\n",
940 dir? dir : "(not contained in table)", meta, atts);
949 /* list attributes */
950 int com_la(int fd, int argc, char *argv[])
952 return com_la_info(fd, argc, argv);
955 /* print database info */
956 int com_info(int fd, int argc, char *argv[])
958 return com_la_info(fd, argc, argv);
961 static int change_stream(const char *stream)
965 query = make_message("update streams set def='%s' "
966 "where name = 'current_stream'", stream);
967 ret = real_query(query);
972 static int get_pic_id_by_name(char *name)
979 if (!(ebn = escaped_basename(name)))
981 q = make_message("select pic_id from data where name = '%s'", ebn);
983 result = get_result(q);
987 row = mysql_fetch_row(result);
991 mysql_free_result(result);
995 static int remove_entry(const char *name)
997 char *q, *ebn = escaped_basename(name);
1002 q = make_message("delete from data where name = '%s'", ebn);
1003 real_query(q); /* ignore errors */
1005 q = make_message("delete from dir where name = '%s'", ebn);
1006 real_query(q); /* ignore errors */
1014 static int add_entry(const char *name)
1016 char *q, *dn, *ebn = NULL, *edn = NULL;
1019 if (!name || !*name)
1020 return -E_MYSQL_SYNTAX;
1021 ebn = escaped_basename(name);
1024 ret = -E_MYSQL_SYNTAX;
1025 dn = para_dirname(name);
1029 edn = escape_str(dn);
1033 q = make_message("insert into data (name, pic_id) values "
1034 "('%s', '%s')", ebn, "1");
1035 ret = real_query(q);
1036 // ret = 1; PARA_DEBUG_LOG("q: %s\n", q);
1040 q = make_message("insert into dir (name, dir) values "
1041 "('%s', '%s')", ebn, edn);
1042 // ret = 1; PARA_DEBUG_LOG("q: %s\n", q);
1043 ret = real_query(q);
1054 * remove/add entries
1056 static int com_rm_ne(__a_unused int fd, int argc, char *argv[])
1058 int ne = !strcmp(argv[0], "ne");
1061 return -E_MYSQL_SYNTAX;
1062 for (i = 1; i < argc; i++) {
1063 ret = remove_entry(argv[i]);
1068 ret = add_entry(argv[i]);
1078 int com_rm(int fd, int argc, char *argv[])
1080 return com_rm_ne(fd, argc, argv);
1086 int com_ne(int fd, int argc, char *argv[])
1088 return com_ne(fd, argc, argv);
1094 int com_mv(__a_unused int fd, int argc, char *argv[])
1096 char *q, *dn, *ebn1 = NULL, *ebn2 = NULL, *edn = NULL;
1100 return -E_MYSQL_SYNTAX;
1102 ebn1 = escaped_basename(argv[1]);
1103 ebn2 = escaped_basename(argv[2]);
1104 if (!ebn1 || !ebn2 || !*ebn1 || !*ebn2)
1106 ret = -E_MYSQL_SYNTAX;
1107 if (!strcmp(ebn1, ebn2))
1109 remove_entry(argv[2]); /* no need to escape, ignore error */
1110 q = make_message("update data set name = '%s' where name = '%s'",
1112 ret = real_query(q);
1116 ret = -E_AUDIO_FILE;
1117 if (!mysql_affected_rows(mysql_ptr))
1119 q = make_message("update dir set name = '%s' where name = '%s'",
1121 ret = real_query(q);
1127 dn = para_dirname(argv[2]);
1131 edn = escape_str(dn);
1138 q = make_message("update dir set dir = '%s' where name = '%s'",
1140 ret = real_query(q);
1152 static int com_set(__a_unused int fd, int argc, char *argv[])
1157 const char *field = strcmp(argv[0], "picass")? "numplayed" : "pic_id";
1160 return -E_MYSQL_SYNTAX;
1162 for (i = 2; i < argc; i++) {
1163 ebn = escaped_basename(argv[i]);
1166 q = make_message("update data set %s = %lu "
1167 "where name = '%s'", field, id, ebn);
1169 ret = real_query(q);
1178 * snp: set numplayed
1180 int com_picass(int fd, int argc, char *argv[])
1182 return com_set(fd, argc, argv);
1186 * snp: set numplayed
1188 int com_snp(int fd, int argc, char *argv[])
1190 return com_set(fd, argc, argv);
1194 * picch: change entry's name in pics table
1196 int com_picch(__a_unused int fd, int argc, char *argv[])
1203 return -E_MYSQL_SYNTAX;
1206 tmp = escape_str(argv[2]);
1209 q = make_message("update pics set name = '%s' where id = %lu", tmp, id);
1211 ret = real_query(q);
1217 * piclist: print list of pics in db
1219 int com_piclist(__a_unused int fd, int argc, __a_unused char *argv[])
1221 void *result = NULL;
1223 unsigned long *length;
1227 return -E_MYSQL_SYNTAX;
1228 result = get_result("select id,name,pic from pics order by id");
1231 while ((row = mysql_fetch_row(result))) {
1232 length = mysql_fetch_lengths(result);
1233 if (!row || !row[0] || !row[1] || !row[2])
1235 ret = send_va_buffer(fd, "%s\t%lu\t%s\n", row[0], length[2], row[1]);
1241 mysql_free_result(result);
1246 * picdel: delete picture from database
1248 int com_picdel(int fd, int argc, char *argv[])
1256 return -E_MYSQL_SYNTAX;
1257 for (i = 1; i < argc; i++) {
1259 q = make_message("delete from pics where id = %lu", id);
1260 ret = real_query(q);
1264 aff = mysql_affected_rows(mysql_ptr);
1266 ret = send_va_buffer(fd, "No such id: %lu\n", id);
1271 q = make_message("update data set pic_id = 1 where pic_id = %lu", id);
1272 ret = real_query(q);
1278 * pic: get picture by name or by number
1280 int com_pic(int fd, int argc, char *argv[])
1282 void *result = NULL;
1284 unsigned long *length, id;
1286 char *q, *name = NULL;
1289 ret = -E_GET_AUDIO_FILE;
1290 name = get_current_audio_file();
1293 name = escaped_basename(argv[1]);
1298 id = atoi(name + 1);
1300 id = get_pic_id_by_name(name);
1304 q = make_message("select pic from pics where id = '%lu'", id);
1305 result = get_result(q);
1309 row = mysql_fetch_row(result);
1311 if (!row || !row[0])
1313 length = mysql_fetch_lengths(result);
1314 ret = send_bin_buffer(fd, row[0], *length);
1316 mysql_free_result(result);
1321 int com_strdel(__a_unused int fd, int argc, char *argv[])
1327 return -E_MYSQL_SYNTAX;
1328 tmp = escape_str(argv[1]);
1331 q = make_message("delete from streams where name='%s'", tmp);
1333 ret = real_query(q);
1341 int com_ls(int fd, int argc, char *argv[])
1346 unsigned int num_rows;
1349 return -E_MYSQL_SYNTAX;
1351 char *tmp = escape_str(argv[1]);
1354 q = make_message("select name from data where name like '%s'",
1358 q = para_strdup("select name from data");
1359 result = get_result(q);
1363 num_rows = mysql_num_rows(result);
1366 ret = print_results(fd, result, 0, 0, num_rows - 1, 0);
1367 mysql_free_result(result);
1374 int com_summary(__a_unused int fd, int argc, __a_unused char *argv[])
1379 void *result2 = NULL;
1380 const char *fmt = "select count(name) from data where %s='1'";
1381 int ret = -E_NORESULT;
1384 return -E_MYSQL_SYNTAX;
1385 result = get_all_attributes();
1388 while ((row = mysql_fetch_row(result))) {
1395 buf = make_message(fmt, row[0]);
1396 result2 = get_result(buf);
1401 row2 = mysql_fetch_row(result2);
1402 if (!row2 || !row2[0])
1404 ret = send_va_buffer(fd, "%s\t%s\n", row[0], row2[0]);
1411 mysql_free_result(result2);
1413 mysql_free_result(result);
1417 static int get_numplayed(char *name)
1421 const char *fmt = "select numplayed from data where name = '%s'";
1422 char *buf = make_message(fmt, name);
1423 int ret = -E_NORESULT;
1425 result = get_result(buf);
1430 row = mysql_fetch_row(result);
1431 if (!row || !row[0])
1436 mysql_free_result(result);
1440 static int update_audio_file(char *name)
1443 const char *fmt1 = "update data set lastplayed = now() where name = '%s'";
1444 const char *fmt2 = "update data set numplayed = %i where name = '%s'";
1446 char *ebn = escaped_basename(name);
1451 q = make_message(fmt1, ebn);
1452 ret = real_query(q);
1456 ret = get_numplayed(ebn);
1459 q = make_message(fmt2, ret + 1, ebn);
1460 ret = real_query(q);
1467 /* If called as child, mmd_lock must be held */
1468 static void update_mmd(char *info)
1470 PARA_DEBUG_LOG("%s", "updating shared memory area\n");
1471 strncpy(mmd->selector_info, info, MMD_INFO_SIZE - 1);
1472 mmd->selector_info[MMD_INFO_SIZE - 1] = '\0';
1475 static void update_audio_file_server_handler(char *name)
1478 info = get_selector_info(name);
1481 update_audio_file(name);
1484 int com_us(__a_unused int fd, int argc, char *argv[])
1490 return -E_MYSQL_SYNTAX;
1491 tmp = escape_str(argv[1]);
1494 ret = update_audio_file(argv[1]);
1499 static void refresh_selector_info(void)
1501 char *name = get_current_audio_file();
1506 info = get_selector_info(name);
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");
1520 int match = -1, ret, i;
1521 unsigned int num_rows;
1524 return -E_MYSQL_SYNTAX;
1528 num_rows = mysql_num_rows(result);
1529 ret = -E_EMPTY_RESULT;
1533 for (i = 0; i < num_rows; i++) {
1534 row = mysql_fetch_row(result);
1535 if (!row || !row[0])
1537 if (!strcmp(row[0], "current_stream"))
1539 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")) {
1559 i = i < 0? i + num_rows : i;
1562 i = i > num_rows - 1? i - num_rows : i;
1564 mysql_data_seek(result, i);
1565 row = mysql_fetch_row(result);
1566 if (!row || !row[0])
1569 query = make_message("update streams set def='%s' where name = "
1570 "'current_stream'", row[0]);
1571 ret = real_query(query);
1573 refresh_selector_info();
1577 mysql_free_result(result);
1581 /* select previous stream */
1582 int com_ps(int fd, int argc, char *argv[])
1584 return com_ps_ns(fd, argc, argv);
1587 /* select next stream */
1588 int com_ns(int fd, int argc, char *argv[])
1590 return com_ps_ns(fd, argc, argv);
1594 int com_streams(int fd, int argc, __a_unused char *argv[])
1596 unsigned int num_rows;
1597 int i, ret = -E_NORESULT;
1601 if (argc > 1 && strcmp(argv[1], "current_stream"))
1602 return -E_MYSQL_SYNTAX;
1604 char *cs = get_current_stream();
1605 ret = send_va_buffer(fd, "%s\n", cs);
1609 result = get_result("select name from streams");
1612 num_rows = mysql_num_rows(result);
1617 for (i = 0; i < num_rows; i++) {
1618 row = mysql_fetch_row(result);
1619 if (!row || !row[0])
1621 if (strcmp(row[0], "current_stream"))
1622 send_va_buffer(fd, "%s\n", row[0]);
1627 mysql_free_result(result);
1631 /* query stream definition */
1632 int com_strq(int fd, int argc, char *argv[])
1640 ret = -E_GET_STREAM;
1641 name = get_current_stream();
1644 name = escaped_basename(argv[1]);
1649 query = make_message("select def from streams where name='%s'", name);
1651 result = get_result(query);
1656 row = mysql_fetch_row(result);
1657 if (!row || !row[0])
1659 /* no '\n' needed */
1660 ret = send_buffer(fd, row[0]);
1663 mysql_free_result(result);
1667 /* change stream / change stream and play */
1668 static int com_cs_csp(int fd, int argc, char *argv[])
1670 int ret, stream_change;
1671 char *query, *stream = NULL;
1672 char *old_stream = get_current_stream();
1673 int csp = !strcmp(argv[0], "csp");
1675 ret = -E_MYSQL_SYNTAX;
1681 ret = send_va_buffer(fd, "%s\n", old_stream);
1685 /* test if stream is valid, no need to escape argv[1] */
1686 query = get_query(argv[1], NULL, 0);
1691 stream = escape_str(argv[1]);
1694 stream_change = strcmp(stream, old_stream);
1695 if (stream_change) {
1696 ret = change_stream(stream);
1699 refresh_selector_info();
1703 mmd->new_vss_status_flags |= VSS_PLAYING;
1705 mmd->new_vss_status_flags |= VSS_NEXT;
1716 int com_cs(int fd, int argc, char *argv[])
1718 return com_cs_csp(fd, argc, argv);
1721 /* change stream and play */
1722 int com_csp(int fd, int argc, char *argv[])
1724 return com_cs_csp(fd, argc, argv);
1727 /* score list / skip */
1728 static int com_sl_skip(int fd, int argc, char *argv[])
1730 void *result = NULL;
1732 int ret, i, skip = !strcmp(argv[0], "skip");
1733 char *query, *stream, *tmp;
1734 unsigned int num_rows, num;
1737 return -E_MYSQL_SYNTAX;
1738 num = atoi(argv[1]);
1740 return -E_MYSQL_SYNTAX;
1742 stream = get_current_stream();
1744 return -E_GET_STREAM;
1746 stream = escape_str(argv[2]);
1750 tmp = get_query(stream, NULL, 0);
1753 return -E_GET_QUERY;
1754 query = make_message("%s limit %d", tmp, num);
1757 result = get_result(query);
1761 ret = -E_EMPTY_RESULT;
1762 num_rows = mysql_num_rows(result);
1765 for (i = 0; i < num_rows && i < num; i++) {
1766 row = mysql_fetch_row(result);
1768 send_va_buffer(fd, "Skipping %s\n", row[0]);
1769 update_audio_file(row[0]);
1771 send_va_buffer(fd, "%s\n", row[0]? row[0]: "BUG");
1776 mysql_free_result(result);
1781 int com_sl(int fd, int argc, char *argv[])
1783 return com_sl_skip(fd, argc, argv);
1787 int com_skip(int fd, int argc, char *argv[])
1789 return com_sl_skip(fd, argc, argv);
1793 * update attributes of name
1795 static int update_atts(int fd, char *name, char *atts)
1798 char *ebn, *q, *old, *new = NULL;
1802 ebn = escaped_basename(name);
1805 q = make_message("update data set %s where name = '%s'", atts, ebn);
1806 old = get_atts(ebn, 0);
1807 send_va_buffer(fd, "old: %s\n", old);
1809 ret = real_query(q);
1813 new = get_atts(ebn, 0);
1814 ret = send_va_buffer(fd, "new: %s\n", new);
1824 int com_sa(int fd, int argc, char *argv[])
1827 char *atts = NULL, *name;
1830 return -E_MYSQL_SYNTAX;
1831 for (i = 1; i < argc; i++) {
1833 char *esc, *tmp, *p =argv[i];
1834 int len = strlen(p);
1838 switch (p[len - 1]) {
1849 esc = escape_str(p);
1852 tmp = make_message("%s%s='%s'", atts? "," : "", esc,
1855 atts = para_strcat(atts, tmp);
1861 if (i >= argc) { /* no name given, use current af */
1862 ret = -E_GET_AUDIO_FILE;
1863 if (!(name = get_current_audio_file()))
1865 ret = update_atts(fd, name, atts);
1869 for (; argv[i] && ret >= 0; i++)
1870 ret = update_atts(fd, argv[i], atts);
1872 refresh_selector_info();
1881 int com_cam(int fd, int argc, char *argv[])
1883 char *name = NULL, *meta = NULL, *atts = NULL;
1887 return -E_MYSQL_SYNTAX;
1888 if (!(name = escaped_basename(argv[1])))
1891 if (!(atts = get_atts(name, 1)))
1894 if (!(meta = get_meta(name, 0)))
1896 for (i = 2; i < argc; i++) {
1899 if (!(ebn = escaped_basename(argv[i])))
1901 ret = send_va_buffer(fd, "updating %s\n", ebn);
1906 q = make_message("update data set %s where name = '%s'",
1908 if ((ret = update_atts(fd, ebn, atts)) >= 0)
1909 ret = real_query(q);
1929 static int com_vrfy_clean(int fd, int argc, __a_unused char *argv[])
1932 int ret, vrfy_mode = strcmp(argv[0], "clean");
1933 void *result = NULL;
1934 unsigned int num_rows;
1939 return -E_MYSQL_SYNTAX;
1941 result = get_result("select data.name from data left join dir on "
1942 "dir.name = data.name where dir.name is NULL");
1945 num_rows = mysql_num_rows(result);
1947 ret = send_buffer(fd, "No invalid entries\n");
1951 send_va_buffer(fd, "found %i invalid entr%s\n", num_rows,
1952 num_rows == 1? "y" : "ies");
1953 ret = print_results(fd, result, 0, 0, num_rows - 1, 0);
1956 while ((row = mysql_fetch_row(result))) {
1961 escaped_name = escape_str(row[0]);
1964 send_va_buffer(fd, "deleting %s\n", escaped_name);
1965 query = make_message("delete from data where name = '%s'",
1967 ret = real_query(query);
1975 mysql_free_result(result);
1982 int com_vrfy(int fd, int argc, char **argv)
1984 return com_vrfy_clean(fd, argc, argv);
1990 int com_clean(int fd, int argc, char **argv)
1992 return com_vrfy_clean(fd, argc, argv);
1995 static FILE *out_file;
1997 static int mysql_write_tmp_file(const char *dir, const char *name)
1999 int ret = -E_TMPFILE;
2000 char *msg = make_message("%s\t%s\n", dir, name);
2001 if (fputs(msg, out_file) != EOF)
2010 int com_upd(int fd, int argc, __a_unused char *argv[])
2012 char *tempname = NULL, *query = NULL;
2013 int ret, out_fd = -1, num = 0;
2014 void *result = NULL;
2015 unsigned int num_rows;
2019 return -E_MYSQL_SYNTAX;
2021 tempname = para_strdup("/tmp/mysql.tmp.XXXXXX");
2022 ret = para_mkstemp(tempname, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
2026 out_file = fdopen(out_fd, "w");
2031 if (find_audio_files(conf.mysql_audio_file_dir_arg, mysql_write_tmp_file) < 0)
2033 num = ftell(out_file);
2035 * we have to make sure the file hit the disk before we call
2040 PARA_DEBUG_LOG("wrote tempfile %s (%d bytes)\n", tempname, num);
2043 if ((ret = real_query("delete from dir")) < 0)
2045 query = make_message("load data infile '%s' ignore into table dir "
2046 "fields terminated by '\t' lines terminated by '\n' "
2047 "(dir, name)", tempname);
2048 ret = real_query(query);
2052 result = get_result("select dir.name from dir left join data on "
2053 "data.name = dir.name where data.name is NULL");
2057 num_rows = mysql_num_rows(result);
2059 ret = send_buffer(fd, "no new entries\n");
2062 while ((row = mysql_fetch_row(result))) {
2067 send_va_buffer(fd, "new entry: %s\n", row[0]);
2068 erow = escape_str(row[0]);
2071 query = make_message("insert into data (name, pic_id) values "
2072 "('%s','%s')", erow, "1");
2074 ret = real_query(query);
2087 mysql_free_result(result);
2091 static char **server_get_audio_file_list(unsigned int num)
2093 char **list = para_malloc((num + 1) * sizeof(char *));
2094 char *tmp, *query, *stream = get_current_stream();
2095 void *result = NULL;
2096 unsigned int num_rows;
2100 tmp = get_query(stream, NULL, 1);
2104 query = make_message("%s limit %d", tmp, num);
2106 result = get_result(query);
2110 num_rows = mysql_num_rows(result);
2113 for (i = 0; i < num_rows && i < num; i++) {
2114 row = mysql_fetch_row(result);
2115 if (!row || !row[0])
2117 list[i] = para_strdup(row[0]);
2130 mysql_free_result(result);
2135 * connect to mysql server, return mysql pointer on success, -E_NOTCONN
2136 * on errors. Called from parent on startup and also from com_cdb().
2138 static int init_mysql_server(void)
2140 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 PARA_DEBUG_LOG("connecting: %s@%s:%d\n", u, conf.mysql_host_arg,
2148 conf.mysql_port_arg);
2149 if (!conf.mysql_user_arg)
2152 * If host is NULL a connection to the local host is assumed,
2153 * If user is NULL, the current user is assumed
2155 if (!(mysql_ptr = mysql_real_connect(mysql_ptr,
2156 conf.mysql_host_arg,
2157 conf.mysql_user_arg,
2158 conf.mysql_passwd_arg,
2159 conf.mysql_database_arg,
2160 conf.mysql_port_arg, NULL, 0))) {
2161 PARA_CRIT_LOG("%s", "connect error\n");
2164 PARA_INFO_LOG("%s", "success\n");
2168 /* mmd lock must be held */
2169 static void write_msg2mmd(int success)
2171 sprintf(mmd->selector_info, "dbinfo1:%s\ndbinfo2:mysql-%s\ndbinfo3:\n",
2172 success < 0? PARA_STRERROR(-success) :
2173 "successfully connected to mysql server",
2174 success < 0? "" : mysql_get_server_info(mysql_ptr));
2177 /* create database */
2178 int com_cdb(int fd, int argc, char *argv[])
2184 PARA_INFO_LOG("%s", "closing database\n");
2185 mysql_close(mysql_ptr);
2187 /* dont use any database */
2188 conf.mysql_database_arg = NULL; /* leak? */
2189 ret = -E_MYSQL_INIT;
2190 if (init_mysql_server() < 0 || !mysql_ptr)
2193 conf.mysql_database_arg = para_strdup("paraslash");
2196 conf.mysql_database_arg = escape_str(argv[1]);
2197 if (!conf.mysql_database_arg)
2200 query = make_message("create database %s", conf.mysql_database_arg);
2201 ret = real_query(query);
2205 /* reconnect with database just created */
2206 mysql_close(mysql_ptr);
2207 ret = -E_MYSQL_INIT;
2208 if (init_mysql_server() < 0 || !mysql_ptr)
2214 if (real_query("create table data (name varchar(255) binary not null "
2216 "lastplayed datetime not null default "
2218 "numplayed int not null default 0, "
2219 "pic_id bigint unsigned not null default 1)") < 0)
2221 if (real_query("create table dir (name varchar(255) binary not null "
2222 "primary key, dir varchar(255) default null)") < 0)
2224 if (real_query("create table pics ("
2225 "id bigint(20) unsigned not null primary key "
2227 "name varchar(255) binary not null, "
2228 "pic mediumblob not null)") < 0)
2230 if (real_query("create table streams ("
2231 "name varchar(255) binary not null primary key, "
2232 "def blob not null)") < 0)
2234 if (real_query("insert into streams (name, def) values "
2235 "('current_stream', '(none)')") < 0)
2237 ret = send_va_buffer(fd, "successfully created database %s\n",
2238 conf.mysql_database_arg);
2243 static void shutdown_connection(void)
2246 PARA_NOTICE_LOG("%s", "shutting down mysql connection\n");
2247 mysql_close(mysql_ptr);
2253 * the init function of the mysql-based audio file selector
2255 * \param db pointer to the struct to initialize
2257 * Check the command line options and initialize all function pointers of \a
2258 * db. Connect to the mysql server and initialize the info string.
2260 * \return This function returns success even if it could not connect
2261 * to the mysql server. This is because the connect is expected to fail
2262 * if there the paraslash database is not yet created. This gives the
2263 * user a chance to send the "cdb" to create the database.
2265 * \sa struct audio_file_selector, misc_meta_data::selector_info,
2268 int mysql_selector_init(struct audio_file_selector *db)
2272 if (!conf.mysql_passwd_given)
2273 return -E_NO_MYSQL_PASSWD;
2274 if (!conf.mysql_audio_file_dir_given)
2275 return -E_NO_AF_DIR;
2277 db->cmd_list = mysql_selector_cmds;
2278 db->get_audio_file_list = server_get_audio_file_list;
2279 db->update_audio_file = update_audio_file_server_handler;
2280 db->shutdown = shutdown_connection;
2281 ret = init_mysql_server();
2283 PARA_WARNING_LOG("%s\n", PARA_STRERROR(-ret));
2285 return 1; /* return success even if connect failed to give the
2286 * user the chance to exec com_cdb