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[])
467 unsigned int num_rows;
470 return -E_MYSQL_SYNTAX;
472 char *tmp = escape_str(argv[1]);
475 atts = make_message("where %s = '1'", tmp);
478 atts = para_strdup(NULL);
480 q = make_message("select name, to_days(now()) - to_days(lastplayed) from "
481 "data %s order by lastplayed", atts);
483 result = get_result(q);
487 num_rows = mysql_num_rows(result);
490 ret = print_results(fd, result, 0, 0, num_rows - 1, 1);
491 mysql_free_result(result);
496 * get last num audio files
498 int com_last(int fd, int argc, char *argv[])
509 return -E_MYSQL_SYNTAX;
510 q = make_message("select name from data order by lastplayed desc "
512 result = get_result(q);
516 ret = print_results(fd, result, 0, 0, mysql_num_rows(result) - 1, 0);
517 mysql_free_result(result);
521 int com_mbox(int fd, int argc, char *argv[])
526 unsigned int num_rows, num_fields;
527 char *query = para_strdup("select concat('From foo@localhost ', "
528 "date_format(Lastplayed, '%a %b %e %T %Y'), "
529 "'\nReceived: from\nTo: bar\n");
532 result = get_all_attributes();
536 while ((row = mysql_fetch_row(result))) {
541 tmp = make_message("%sX-Attribute-%s: ', %s, '\n", query,
546 query = para_strcat(query,
554 char *esc = escape_str(argv[1]), *tmp;
558 tmp = make_message("%s where name LIKE '%s'", query, esc);
563 mysql_free_result(result);
565 result = get_result(query);
568 ret = -E_EMPTY_RESULT;
569 num_fields = mysql_field_count(mysql_ptr);
570 num_rows = mysql_num_rows(result);
571 if (!num_fields || !num_rows)
573 ret = print_results(fd, result, 0, 0, num_rows - 1, num_fields - 1);
577 mysql_free_result(result);
582 * get attributes by name. If verbose is not 0, this function returns a string
583 * of the form 'att1="0",att2="1"'... which is used in com_cam() for
584 * constructing a mysql update query. Otherwise the space-separated list of all
585 * attributes which are set in the audio file given by name is returned. Never
586 * returns NULL in *NON VERBOSE* mode.
588 static char *get_atts(char *name, int verbose)
590 char *atts = NULL, *buf, *ebn;
591 void *result = NULL, *result2 = NULL;
596 result2 = get_all_attributes();
599 ebn = escaped_basename(name);
602 buf = make_message("select * from data where name='%s'", ebn);
604 result = get_result(buf);
608 num_fields = mysql_num_fields(result);
611 mysql_data_seek(result2, 4); /* skip Lastplayed, Numplayed... */
612 row = mysql_fetch_row(result);
615 for (i = 4; i < num_fields; i++) {
616 int is_set = row[i] && !strcmp(row[i], "1");
617 row2 = mysql_fetch_row(result2);
618 if (!row2 || !row2[0])
620 if (atts && (verbose || is_set))
621 atts = para_strcat(atts, verbose? "," : " ");
622 if (is_set || verbose)
623 atts = para_strcat(atts, row2[0]);
625 atts = para_strcat(atts, is_set? "=\"1\"" : "=\"0\"");
629 mysql_free_result(result2);
631 mysql_free_result(result);
632 if (!atts && !verbose)
633 atts = para_strdup("(none)");
637 /* never returns NULL in verbose mode */
638 static char *get_meta(char *name, int verbose)
642 char *ebn, *q, *ret = NULL;
643 const char *verbose_fmt =
644 "select concat('lastplayed: ', "
645 "(to_days(now()) - to_days(lastplayed)),"
646 "' day(s). numplayed: ', numplayed, "
647 "', pic: ', pic_id) "
648 "from data where name = '%s'";
649 /* is that really needed? */
650 const char *fmt = "select concat('lastplayed=\\'', lastplayed, "
651 "'\\', numplayed=\\'', numplayed, "
652 "'\\', pic_id=\\'', pic_id, '\\'') "
653 "from data where name = '%s'";
655 if (!(ebn = escaped_basename(name)))
657 q = make_message(verbose? verbose_fmt : fmt, ebn);
659 result = get_result(q);
663 row = mysql_fetch_row(result);
666 ret = para_strdup(row[0]);
669 mysql_free_result(result);
671 ret = para_strdup("(not yet played)");
675 static char *get_dir(char *name)
677 char *ret = NULL, *q, *ebn;
681 if (!(ebn = escaped_basename(name)))
683 q = make_message("select dir from dir where name = '%s'", ebn);
685 result = get_result(q);
689 row = mysql_fetch_row(result);
691 ret = para_strdup(row[0]);
692 mysql_free_result(result);
696 /* never returns NULL */
697 static char *get_current_stream(void)
701 void *result = get_result("select def from streams where "
702 "name = 'current_stream'");
706 row = mysql_fetch_row(result);
709 ret = para_strdup(row[0]);
710 mysql_free_result(result);
714 mysql_free_result(result);
715 return para_strdup("(none)");
719 * Read stream definition of stream streamname and construct mysql
720 * query. Return NULL on errors. If streamname is NULL, use current
721 * stream. If that is also NULL, use query that selects everything.
722 * If filename is NULL, query will list everything, otherwise only
723 * the score of given file.
725 static char *get_query(char *streamname, char *filename, int with_path)
727 char *accept_opts = NULL, *deny_opts = NULL, *score = NULL;
728 char *where_clause, *order, *query;
729 char command[255] = ""; /* buffer for sscanf */
733 char *select_clause = NULL;
735 tmp = get_current_stream();
737 tmp = escape_str(streamname);
741 if (!strcmp(tmp, "(none)")) {
744 char *ret, *ebn = escaped_basename(filename);
747 ret = make_message("select to_days(now()) - "
748 "to_days(lastplayed) from data "
749 "where name = '%s'", ebn);
755 "select concat(dir.dir, '/', dir.name) "
756 "from data, dir where dir.name = data.name "
757 "order by data.lastplayed"
760 "select name from data where name is not NULL "
761 "order by lastplayed"
765 query = make_message("select def from streams where name = '%s'",
767 result = get_result(query);
772 row = mysql_fetch_row(result);
778 char *arg, *line = end;
780 if (!(end = strchr(line, '\n')))
784 if (sscanf(line, "%200s%n", command, &n) < 1)
787 if (!strcmp(command, "accept:")) {
788 char *tmp2 = s_a_r_list(macro_list, arg);
790 accept_opts = para_strcat(
791 accept_opts, " or ");
792 accept_opts = para_strcat(accept_opts, tmp2);
796 if (!strcmp(command, "deny:")) {
797 char *tmp2 = s_a_r_list(macro_list, arg);
799 deny_opts = para_strcat(deny_opts, " or ");
800 deny_opts = para_strcat(deny_opts, tmp2);
804 if (!score && !strcmp(command, "score:"))
805 score = s_a_r_list(macro_list, arg);
808 score = s_a_r_list(macro_list, conf.mysql_default_score_arg);
813 char *ebn = escaped_basename(filename);
816 select_clause = make_message("select %s from data ", score);
818 where_clause = make_message( "where name = '%s' ", ebn);
820 order = para_strdup("");
823 select_clause = para_strdup(with_path?
824 "select concat(dir.dir, '/', dir.name) from data, dir "
825 "where dir.name = data.name "
827 "select name from data where name is not NULL");
828 order = make_message("order by -(%s)", score);
830 if (accept_opts && deny_opts) {
831 where_clause = make_message("and ((%s) and not (%s)) ",
832 accept_opts, deny_opts);
835 if (accept_opts && !deny_opts) {
836 where_clause = make_message("and (%s) ", accept_opts);
839 if (!accept_opts && deny_opts) {
840 where_clause = make_message("and not (%s) ", deny_opts);
843 where_clause = para_strdup("");
845 query = make_message("%s %s %s", select_clause, where_clause, order);
855 mysql_free_result(result);
862 * This is called from server and from some commands. Name must not be NULL
863 * Never returns NULL.
865 static char *get_selector_info(char *name)
867 char *meta, *atts, *info, *dir, *query, *stream;
869 MYSQL_ROW row = NULL;
872 return para_strdup("(none)");
873 stream = get_current_stream();
874 meta = get_meta(name, 1);
875 atts = get_atts(name, 0);
878 query = get_query(stream, name, 0); /* FIXME: pass stream == NULL instead? */
881 result = get_result(query);
884 row = mysql_fetch_row(result);
886 info = make_message("dbinfo1:dir: %s\n"
887 "dbinfo2:stream: %s, %s, score: %s\n"
889 dir? dir : "(not contained in table)",
891 (result && row && row[0])? row[0] : "(no score)",
898 mysql_free_result(result);
903 /* might return NULL */
904 static char *get_current_audio_file(void)
908 name = para_basename(mmd->filename);
913 /* list attributes / print database info */
914 static int com_la_info(int fd, int argc, char *argv[])
916 char *name = NULL, *meta = NULL, *atts = NULL, *dir = NULL;
917 int ret, com_la = strcmp(argv[0], "info");
920 ret = -E_GET_AUDIO_FILE;
921 if (!(name = get_current_audio_file()))
923 ret = send_va_buffer(fd, "%s\n", name);
928 if (!(name = escaped_basename(argv[1])))
931 meta = get_meta(name, 1);
932 atts = get_atts(name, 0);
935 ret = send_va_buffer(fd, "%s\n", atts);
937 ret = send_va_buffer(fd, "dir: %s\n" "%s\n" "attributes: %s\n",
938 dir? dir : "(not contained in table)", meta, atts);
947 /* list attributes */
948 int com_la(int fd, int argc, char *argv[])
950 return com_la_info(fd, argc, argv);
953 /* print database info */
954 int com_info(int fd, int argc, char *argv[])
956 return com_la_info(fd, argc, argv);
959 static int change_stream(const char *stream)
963 query = make_message("update streams set def='%s' "
964 "where name = 'current_stream'", stream);
965 ret = real_query(query);
970 static int get_pic_id_by_name(char *name)
977 if (!(ebn = escaped_basename(name)))
979 q = make_message("select pic_id from data where name = '%s'", ebn);
981 result = get_result(q);
985 row = mysql_fetch_row(result);
989 mysql_free_result(result);
993 static int remove_entry(const char *name)
995 char *q, *ebn = escaped_basename(name);
1000 q = make_message("delete from data where name = '%s'", ebn);
1001 real_query(q); /* ignore errors */
1003 q = make_message("delete from dir where name = '%s'", ebn);
1004 real_query(q); /* ignore errors */
1012 static int add_entry(const char *name)
1014 char *q, *dn, *ebn = NULL, *edn = NULL;
1017 if (!name || !*name)
1018 return -E_MYSQL_SYNTAX;
1019 ebn = escaped_basename(name);
1022 ret = -E_MYSQL_SYNTAX;
1023 dn = para_dirname(name);
1027 edn = escape_str(dn);
1031 q = make_message("insert into data (name, pic_id) values "
1032 "('%s', '%s')", ebn, "1");
1033 ret = real_query(q);
1034 // ret = 1; PARA_DEBUG_LOG("q: %s\n", q);
1038 q = make_message("insert into dir (name, dir) values "
1039 "('%s', '%s')", ebn, edn);
1040 // ret = 1; PARA_DEBUG_LOG("q: %s\n", q);
1041 ret = real_query(q);
1052 * remove/add entries
1054 static int com_rm_ne(__a_unused int fd, int argc, char *argv[])
1056 int ne = !strcmp(argv[0], "ne");
1059 return -E_MYSQL_SYNTAX;
1060 for (i = 1; i < argc; i++) {
1061 ret = remove_entry(argv[i]);
1066 ret = add_entry(argv[i]);
1076 int com_rm(int fd, int argc, char *argv[])
1078 return com_rm_ne(fd, argc, argv);
1084 int com_ne(int fd, int argc, char *argv[])
1086 return com_ne(fd, argc, argv);
1092 int com_mv(__a_unused int fd, int argc, char *argv[])
1094 char *q, *dn, *ebn1 = NULL, *ebn2 = NULL, *edn = NULL;
1098 return -E_MYSQL_SYNTAX;
1100 ebn1 = escaped_basename(argv[1]);
1101 ebn2 = escaped_basename(argv[2]);
1102 if (!ebn1 || !ebn2 || !*ebn1 || !*ebn2)
1104 ret = -E_MYSQL_SYNTAX;
1105 if (!strcmp(ebn1, ebn2))
1107 remove_entry(argv[2]); /* no need to escape, ignore error */
1108 q = make_message("update data set name = '%s' where name = '%s'",
1110 ret = real_query(q);
1114 ret = -E_AUDIO_FILE;
1115 if (!mysql_affected_rows(mysql_ptr))
1117 q = make_message("update dir set name = '%s' where name = '%s'",
1119 ret = real_query(q);
1125 dn = para_dirname(argv[2]);
1129 edn = escape_str(dn);
1136 q = make_message("update dir set dir = '%s' where name = '%s'",
1138 ret = real_query(q);
1150 static int com_set(__a_unused int fd, int argc, char *argv[])
1155 const char *field = strcmp(argv[0], "picass")? "numplayed" : "pic_id";
1158 return -E_MYSQL_SYNTAX;
1160 for (i = 2; i < argc; i++) {
1161 ebn = escaped_basename(argv[i]);
1164 q = make_message("update data set %s = %lu "
1165 "where name = '%s'", field, id, ebn);
1167 ret = real_query(q);
1176 * snp: set numplayed
1178 int com_picass(int fd, int argc, char *argv[])
1180 return com_set(fd, argc, argv);
1184 * snp: set numplayed
1186 int com_snp(int fd, int argc, char *argv[])
1188 return com_set(fd, argc, argv);
1192 * picch: change entry's name in pics table
1194 int com_picch(__a_unused int fd, int argc, char *argv[])
1201 return -E_MYSQL_SYNTAX;
1204 tmp = escape_str(argv[2]);
1207 q = make_message("update pics set name = '%s' where id = %lu", tmp, id);
1209 ret = real_query(q);
1215 * piclist: print list of pics in db
1217 int com_piclist(__a_unused int fd, int argc, __a_unused char *argv[])
1219 void *result = NULL;
1221 unsigned long *length;
1225 return -E_MYSQL_SYNTAX;
1226 result = get_result("select id,name,pic from pics order by id");
1229 while ((row = mysql_fetch_row(result))) {
1230 length = mysql_fetch_lengths(result);
1231 if (!row || !row[0] || !row[1] || !row[2])
1233 ret = send_va_buffer(fd, "%s\t%lu\t%s\n", row[0], length[2], row[1]);
1239 mysql_free_result(result);
1244 * picdel: delete picture from database
1246 int com_picdel(int fd, int argc, char *argv[])
1254 return -E_MYSQL_SYNTAX;
1255 for (i = 1; i < argc; i++) {
1257 q = make_message("delete from pics where id = %lu", id);
1258 ret = real_query(q);
1262 aff = mysql_affected_rows(mysql_ptr);
1264 ret = send_va_buffer(fd, "No such id: %lu\n", id);
1269 q = make_message("update data set pic_id = 1 where pic_id = %lu", id);
1270 ret = real_query(q);
1276 * pic: get picture by name or by number
1278 int com_pic(int fd, int argc, char *argv[])
1280 void *result = NULL;
1282 unsigned long *length, id;
1284 char *q, *name = NULL;
1287 ret = -E_GET_AUDIO_FILE;
1288 name = get_current_audio_file();
1291 name = escaped_basename(argv[1]);
1296 id = atoi(name + 1);
1298 id = get_pic_id_by_name(name);
1302 q = make_message("select pic from pics where id = '%lu'", id);
1303 result = get_result(q);
1307 row = mysql_fetch_row(result);
1309 if (!row || !row[0])
1311 length = mysql_fetch_lengths(result);
1312 ret = send_bin_buffer(fd, row[0], *length);
1314 mysql_free_result(result);
1319 int com_strdel(__a_unused int fd, int argc, char *argv[])
1325 return -E_MYSQL_SYNTAX;
1326 tmp = escape_str(argv[1]);
1329 q = make_message("delete from streams where name='%s'", tmp);
1331 ret = real_query(q);
1339 int com_ls(int fd, int argc, char *argv[])
1344 unsigned int num_rows;
1347 return -E_MYSQL_SYNTAX;
1349 char *tmp = escape_str(argv[1]);
1352 q = make_message("select name from data where name like '%s'",
1356 q = para_strdup("select name from data");
1357 result = get_result(q);
1361 num_rows = mysql_num_rows(result);
1364 ret = print_results(fd, result, 0, 0, num_rows - 1, 0);
1365 mysql_free_result(result);
1372 int com_summary(__a_unused int fd, int argc, __a_unused char *argv[])
1377 void *result2 = NULL;
1378 const char *fmt = "select count(name) from data where %s='1'";
1379 int ret = -E_NORESULT;
1382 return -E_MYSQL_SYNTAX;
1383 result = get_all_attributes();
1386 while ((row = mysql_fetch_row(result))) {
1393 buf = make_message(fmt, row[0]);
1394 result2 = get_result(buf);
1399 row2 = mysql_fetch_row(result2);
1400 if (!row2 || !row2[0])
1402 ret = send_va_buffer(fd, "%s\t%s\n", row[0], row2[0]);
1409 mysql_free_result(result2);
1411 mysql_free_result(result);
1415 static int get_numplayed(char *name)
1419 const char *fmt = "select numplayed from data where name = '%s'";
1420 char *buf = make_message(fmt, name);
1421 int ret = -E_NORESULT;
1423 result = get_result(buf);
1428 row = mysql_fetch_row(result);
1429 if (!row || !row[0])
1434 mysql_free_result(result);
1438 static int update_audio_file(char *name)
1441 const char *fmt1 = "update data set lastplayed = now() where name = '%s'";
1442 const char *fmt2 = "update data set numplayed = %i where name = '%s'";
1444 char *ebn = escaped_basename(name);
1449 q = make_message(fmt1, ebn);
1450 ret = real_query(q);
1454 ret = get_numplayed(ebn);
1457 q = make_message(fmt2, ret + 1, ebn);
1458 ret = real_query(q);
1465 /* If called as child, mmd_lock must be held */
1466 static void update_mmd(char *info)
1468 PARA_DEBUG_LOG("%s", "updating shared memory area\n");
1469 strncpy(mmd->selector_info, info, MMD_INFO_SIZE - 1);
1470 mmd->selector_info[MMD_INFO_SIZE - 1] = '\0';
1473 static void update_audio_file_server_handler(char *name)
1476 info = get_selector_info(name);
1479 update_audio_file(name);
1482 int com_us(__a_unused int fd, int argc, char *argv[])
1488 return -E_MYSQL_SYNTAX;
1489 tmp = escape_str(argv[1]);
1492 ret = update_audio_file(argv[1]);
1497 static void refresh_selector_info(void)
1499 char *name = get_current_audio_file();
1504 info = get_selector_info(name);
1512 /* select previous / next stream */
1513 static int com_ps_ns(__a_unused int fd, int argc, char *argv[])
1515 char *query, *stream = get_current_stream();
1516 void *result = get_result("select name from streams");
1518 int match = -1, ret, i;
1519 unsigned int num_rows;
1522 return -E_MYSQL_SYNTAX;
1526 num_rows = mysql_num_rows(result);
1527 ret = -E_EMPTY_RESULT;
1531 for (i = 0; i < num_rows; i++) {
1532 row = mysql_fetch_row(result);
1533 if (!row || !row[0])
1535 if (!strcmp(row[0], "current_stream"))
1537 if (!strcmp(row[0], stream)) {
1545 if (!strcmp(argv[0], "ps"))
1546 i = match > 0? match - 1 : num_rows - 1;
1548 i = match < num_rows - 1? match + 1 : 0;
1550 mysql_data_seek(result, i);
1551 row = mysql_fetch_row(result);
1552 if (!row || !row[0])
1554 if (!strcmp(row[0], "current_stream")) {
1555 if (!strcmp(argv[0], "ps")) {
1557 i = i < 0? i + num_rows : i;
1560 i = i > num_rows - 1? i - num_rows : i;
1562 mysql_data_seek(result, i);
1563 row = mysql_fetch_row(result);
1564 if (!row || !row[0])
1567 query = make_message("update streams set def='%s' where name = "
1568 "'current_stream'", row[0]);
1569 ret = real_query(query);
1571 refresh_selector_info();
1575 mysql_free_result(result);
1579 /* select previous stream */
1580 int com_ps(int fd, int argc, char *argv[])
1582 return com_ps_ns(fd, argc, argv);
1585 /* select next stream */
1586 int com_ns(int fd, int argc, char *argv[])
1588 return com_ps_ns(fd, argc, argv);
1592 int com_streams(int fd, int argc, __a_unused char *argv[])
1594 unsigned int num_rows;
1595 int i, ret = -E_NORESULT;
1599 if (argc > 1 && strcmp(argv[1], "current_stream"))
1600 return -E_MYSQL_SYNTAX;
1602 char *cs = get_current_stream();
1603 ret = send_va_buffer(fd, "%s\n", cs);
1607 result = get_result("select name from streams");
1610 num_rows = mysql_num_rows(result);
1615 for (i = 0; i < num_rows; i++) {
1616 row = mysql_fetch_row(result);
1617 if (!row || !row[0])
1619 if (strcmp(row[0], "current_stream"))
1620 send_va_buffer(fd, "%s\n", row[0]);
1625 mysql_free_result(result);
1629 /* query stream definition */
1630 int com_strq(int fd, int argc, char *argv[])
1638 ret = -E_GET_STREAM;
1639 name = get_current_stream();
1642 name = escaped_basename(argv[1]);
1647 query = make_message("select def from streams where name='%s'", name);
1649 result = get_result(query);
1654 row = mysql_fetch_row(result);
1655 if (!row || !row[0])
1657 /* no '\n' needed */
1658 ret = send_buffer(fd, row[0]);
1661 mysql_free_result(result);
1665 /* change stream / change stream and play */
1666 static int com_cs_csp(int fd, int argc, char *argv[])
1668 int ret, stream_change;
1669 char *query, *stream = NULL;
1670 char *old_stream = get_current_stream();
1671 int csp = !strcmp(argv[0], "csp");
1673 ret = -E_MYSQL_SYNTAX;
1679 ret = send_va_buffer(fd, "%s\n", old_stream);
1683 /* test if stream is valid, no need to escape argv[1] */
1684 query = get_query(argv[1], NULL, 0);
1689 stream = escape_str(argv[1]);
1692 stream_change = strcmp(stream, old_stream);
1693 if (stream_change) {
1694 ret = change_stream(stream);
1697 refresh_selector_info();
1701 mmd->new_vss_status_flags |= VSS_PLAYING;
1703 mmd->new_vss_status_flags |= VSS_NEXT;
1714 int com_cs(int fd, int argc, char *argv[])
1716 return com_cs_csp(fd, argc, argv);
1719 /* change stream and play */
1720 int com_csp(int fd, int argc, char *argv[])
1722 return com_cs_csp(fd, argc, argv);
1725 /* score list / skip */
1726 static int com_sl_skip(int fd, int argc, char *argv[])
1728 void *result = NULL;
1730 int ret, i, skip = !strcmp(argv[0], "skip");
1731 char *query, *stream, *tmp;
1732 unsigned int num_rows, num;
1735 return -E_MYSQL_SYNTAX;
1736 num = atoi(argv[1]);
1738 return -E_MYSQL_SYNTAX;
1740 stream = get_current_stream();
1742 return -E_GET_STREAM;
1744 stream = escape_str(argv[2]);
1748 tmp = get_query(stream, NULL, 0);
1751 return -E_GET_QUERY;
1752 query = make_message("%s limit %d", tmp, num);
1755 result = get_result(query);
1759 ret = -E_EMPTY_RESULT;
1760 num_rows = mysql_num_rows(result);
1763 for (i = 0; i < num_rows && i < num; i++) {
1764 row = mysql_fetch_row(result);
1766 send_va_buffer(fd, "Skipping %s\n", row[0]);
1767 update_audio_file(row[0]);
1769 send_va_buffer(fd, "%s\n", row[0]? row[0]: "BUG");
1774 mysql_free_result(result);
1779 int com_sl(int fd, int argc, char *argv[])
1781 return com_sl_skip(fd, argc, argv);
1785 int com_skip(int fd, int argc, char *argv[])
1787 return com_sl_skip(fd, argc, argv);
1791 * update attributes of name
1793 static int update_atts(int fd, char *name, char *atts)
1796 char *ebn, *q, *old, *new = NULL;
1800 ebn = escaped_basename(name);
1803 q = make_message("update data set %s where name = '%s'", atts, ebn);
1804 old = get_atts(ebn, 0);
1805 send_va_buffer(fd, "old: %s\n", old);
1807 ret = real_query(q);
1811 new = get_atts(ebn, 0);
1812 ret = send_va_buffer(fd, "new: %s\n", new);
1822 int com_sa(int fd, int argc, char *argv[])
1825 char *atts = NULL, *name;
1828 return -E_MYSQL_SYNTAX;
1829 for (i = 1; i < argc; i++) {
1831 char *esc, *tmp, *p =argv[i];
1832 int len = strlen(p);
1836 switch (p[len - 1]) {
1847 esc = escape_str(p);
1850 tmp = make_message("%s%s='%s'", atts? "," : "", esc,
1853 atts = para_strcat(atts, tmp);
1859 if (i >= argc) { /* no name given, use current af */
1860 ret = -E_GET_AUDIO_FILE;
1861 if (!(name = get_current_audio_file()))
1863 ret = update_atts(fd, name, atts);
1867 for (; argv[i] && ret >= 0; i++)
1868 ret = update_atts(fd, argv[i], atts);
1870 refresh_selector_info();
1879 int com_cam(int fd, int argc, char *argv[])
1881 char *name = NULL, *meta = NULL, *atts = NULL;
1885 return -E_MYSQL_SYNTAX;
1886 if (!(name = escaped_basename(argv[1])))
1889 if (!(atts = get_atts(name, 1)))
1892 if (!(meta = get_meta(name, 0)))
1894 for (i = 2; i < argc; i++) {
1897 if (!(ebn = escaped_basename(argv[i])))
1899 ret = send_va_buffer(fd, "updating %s\n", ebn);
1904 q = make_message("update data set %s where name = '%s'",
1906 if ((ret = update_atts(fd, ebn, atts)) >= 0)
1907 ret = real_query(q);
1927 static int com_vrfy_clean(int fd, int argc, __a_unused char *argv[])
1930 int ret, vrfy_mode = strcmp(argv[0], "clean");
1931 void *result = NULL;
1932 unsigned int num_rows;
1937 return -E_MYSQL_SYNTAX;
1939 result = get_result("select data.name from data left join dir on "
1940 "dir.name = data.name where dir.name is NULL");
1943 num_rows = mysql_num_rows(result);
1945 ret = send_buffer(fd, "No invalid entries\n");
1949 send_va_buffer(fd, "found %i invalid entr%s\n", num_rows,
1950 num_rows == 1? "y" : "ies");
1951 ret = print_results(fd, result, 0, 0, num_rows - 1, 0);
1954 while ((row = mysql_fetch_row(result))) {
1959 escaped_name = escape_str(row[0]);
1962 send_va_buffer(fd, "deleting %s\n", escaped_name);
1963 query = make_message("delete from data where name = '%s'",
1965 ret = real_query(query);
1973 mysql_free_result(result);
1980 int com_vrfy(int fd, int argc, char **argv)
1982 return com_vrfy_clean(fd, argc, argv);
1988 int com_clean(int fd, int argc, char **argv)
1990 return com_vrfy_clean(fd, argc, argv);
1993 static FILE *out_file;
1995 static int mysql_write_tmp_file(const char *dir, const char *name)
1997 int ret = -E_TMPFILE;
1998 char *msg = make_message("%s\t%s\n", dir, name);
1999 if (fputs(msg, out_file) != EOF)
2008 int com_upd(int fd, int argc, __a_unused char *argv[])
2010 char *tempname = NULL, *query = NULL;
2011 int ret, out_fd = -1, num = 0;
2012 void *result = NULL;
2013 unsigned int num_rows;
2017 return -E_MYSQL_SYNTAX;
2019 tempname = para_strdup("/tmp/mysql.tmp.XXXXXX");
2020 ret = para_mkstemp(tempname, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
2024 out_file = fdopen(out_fd, "w");
2029 if (find_audio_files(conf.mysql_audio_file_dir_arg, mysql_write_tmp_file) < 0)
2031 num = ftell(out_file);
2033 * we have to make sure the file hit the disk before we call
2038 PARA_DEBUG_LOG("wrote tempfile %s (%d bytes)\n", tempname, num);
2041 if ((ret = real_query("delete from dir")) < 0)
2043 query = make_message("load data infile '%s' ignore into table dir "
2044 "fields terminated by '\t' lines terminated by '\n' "
2045 "(dir, name)", tempname);
2046 ret = real_query(query);
2050 result = get_result("select dir.name from dir left join data on "
2051 "data.name = dir.name where data.name is NULL");
2055 num_rows = mysql_num_rows(result);
2057 ret = send_buffer(fd, "no new entries\n");
2060 while ((row = mysql_fetch_row(result))) {
2065 send_va_buffer(fd, "new entry: %s\n", row[0]);
2066 erow = escape_str(row[0]);
2069 query = make_message("insert into data (name, pic_id) values "
2070 "('%s','%s')", erow, "1");
2072 ret = real_query(query);
2085 mysql_free_result(result);
2089 static char **server_get_audio_file_list(unsigned int num)
2091 char **list = para_malloc((num + 1) * sizeof(char *));
2092 char *tmp, *query, *stream = get_current_stream();
2093 void *result = NULL;
2094 unsigned int num_rows;
2098 tmp = get_query(stream, NULL, 1);
2102 query = make_message("%s limit %d", tmp, num);
2104 result = get_result(query);
2108 num_rows = mysql_num_rows(result);
2111 for (i = 0; i < num_rows && i < num; i++) {
2112 row = mysql_fetch_row(result);
2113 if (!row || !row[0])
2115 list[i] = para_strdup(row[0]);
2128 mysql_free_result(result);
2133 * connect to mysql server, return mysql pointer on success, -E_NOTCONN
2134 * on errors. Called from parent on startup and also from com_cdb().
2136 static int init_mysql_server(void)
2138 char *u = conf.mysql_user_arg? conf.mysql_user_arg : para_logname();
2140 mysql_ptr = mysql_init(NULL);
2142 PARA_CRIT_LOG("%s", "mysql init error\n");
2145 PARA_DEBUG_LOG("connecting: %s@%s:%d\n", u, conf.mysql_host_arg,
2146 conf.mysql_port_arg);
2147 if (!conf.mysql_user_arg)
2150 * If host is NULL a connection to the local host is assumed,
2151 * If user is NULL, the current user is assumed
2153 if (!(mysql_ptr = mysql_real_connect(mysql_ptr,
2154 conf.mysql_host_arg,
2155 conf.mysql_user_arg,
2156 conf.mysql_passwd_arg,
2157 conf.mysql_database_arg,
2158 conf.mysql_port_arg, NULL, 0))) {
2159 PARA_CRIT_LOG("%s", "connect error\n");
2162 PARA_INFO_LOG("%s", "success\n");
2166 /* mmd lock must be held */
2167 static void write_msg2mmd(int success)
2169 sprintf(mmd->selector_info, "dbinfo1:%s\ndbinfo2:mysql-%s\ndbinfo3:\n",
2170 success < 0? PARA_STRERROR(-success) :
2171 "successfully connected to mysql server",
2172 success < 0? "" : mysql_get_server_info(mysql_ptr));
2175 /* create database */
2176 int com_cdb(int fd, int argc, char *argv[])
2182 PARA_INFO_LOG("%s", "closing database\n");
2183 mysql_close(mysql_ptr);
2185 /* dont use any database */
2186 conf.mysql_database_arg = NULL; /* leak? */
2187 ret = -E_MYSQL_INIT;
2188 if (init_mysql_server() < 0 || !mysql_ptr)
2191 conf.mysql_database_arg = para_strdup("paraslash");
2194 conf.mysql_database_arg = escape_str(argv[1]);
2195 if (!conf.mysql_database_arg)
2198 query = make_message("create database %s", conf.mysql_database_arg);
2199 ret = real_query(query);
2203 /* reconnect with database just created */
2204 mysql_close(mysql_ptr);
2205 ret = -E_MYSQL_INIT;
2206 if (init_mysql_server() < 0 || !mysql_ptr)
2212 if (real_query("create table data (name varchar(255) binary not null "
2214 "lastplayed datetime not null default "
2216 "numplayed int not null default 0, "
2217 "pic_id bigint unsigned not null default 1)") < 0)
2219 if (real_query("create table dir (name varchar(255) binary not null "
2220 "primary key, dir varchar(255) default null)") < 0)
2222 if (real_query("create table pics ("
2223 "id bigint(20) unsigned not null primary key "
2225 "name varchar(255) binary not null, "
2226 "pic mediumblob not null)") < 0)
2228 if (real_query("create table streams ("
2229 "name varchar(255) binary not null primary key, "
2230 "def blob not null)") < 0)
2232 if (real_query("insert into streams (name, def) values "
2233 "('current_stream', '(none)')") < 0)
2235 ret = send_va_buffer(fd, "successfully created database %s\n",
2236 conf.mysql_database_arg);
2241 static void shutdown_connection(void)
2244 PARA_NOTICE_LOG("%s", "shutting down mysql connection\n");
2245 mysql_close(mysql_ptr);
2251 * the init function of the mysql-based audio file selector
2253 * \param db pointer to the struct to initialize
2255 * Check the command line options and initialize all function pointers of \a
2256 * db. Connect to the mysql server and initialize the info string.
2258 * \return This function returns success even if it could not connect
2259 * to the mysql server. This is because the connect is expected to fail
2260 * if there the paraslash database is not yet created. This gives the
2261 * user a chance to send the "cdb" to create the database.
2263 * \sa struct audio_file_selector, misc_meta_data::selector_info,
2266 int mysql_selector_init(struct audio_file_selector *db)
2270 if (!conf.mysql_passwd_given)
2271 return -E_NO_MYSQL_PASSWD;
2272 if (!conf.mysql_audio_file_dir_given)
2273 return -E_NO_AF_DIR;
2275 db->cmd_list = mysql_selector_cmds;
2276 db->get_audio_file_list = server_get_audio_file_list;
2277 db->update_audio_file = update_audio_file_server_handler;
2278 db->shutdown = shutdown_connection;
2279 ret = init_mysql_server();
2281 PARA_WARNING_LOG("%s\n", PARA_STRERROR(-ret));
2283 return 1; /* return success even if connect failed to give the
2284 * user the chance to exec com_cdb