2 * Copyright (C) 1999-2007 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file mysql_selector.c para_server's mysql-based audio file selector */
9 /** \cond some internal constants */
10 #define MEDIUM_BLOB_SIZE 16777220 /* (2**24 + 4) */
11 #define BLOB_SIZE 65539 /* (2**16 + 3) */
13 #include "server.cmdline.h"
17 #include <mysql/mysql.h>
18 #include <mysql/mysql_version.h>
23 #include "user_list.h"
24 #include "mysql_selector_command_list.h"
27 /** pointer to the shared memory area */
28 extern struct misc_meta_data *mmd;
30 static void *mysql_ptr = NULL;
31 static int mysql_lock;
34 * contains name/replacement pairs used by s_a_r_list()
39 /** the name of the macro */
41 /** the replacement text */
42 const char *replacement;
45 static const struct para_macro mysql_macro_list[] = {
47 .replacement = "(data.%s != '1')"
50 .replacement = "(data.%s = '1')"
53 .replacement = "%sdata.Pic_Id"
56 .replacement = "(data.name like '%s')"
59 .replacement = "%sFLOOR((UNIX_TIMESTAMP(now())"
60 "-UNIX_TIMESTAMP(data.Lastplayed))/60)"
63 .replacement = "%sdata.Numplayed"
70 * simple search and replace routine
72 * \param src source string
73 * \param macro_name the name of the macro
74 * \param replacement the replacement format string
76 * In \p src, replace each occurence of \p macro_name(arg) by the string
77 * determined by the \p replacement format string. \p replacement may (but
78 * needs not) contain a single string conversion specifier (%s) which gets
81 * \return A string in which all matches in \p src are replaced, or \p NULL if
82 * an syntax error was encountered. Caller must free the result.
86 __must_check __malloc static char *s_a_r(const char *src, const char* macro_name,
87 const char *replacement)
94 const char *bufptr = src;
96 if (!macro_name || !replacement || !src)
97 return para_strdup(src);
98 regcomp(&preg, macro_name, 0);
99 while (regexec(&preg, bufptr, nmatch, pmatch, eflags)
101 char *tmp, *arg, *o_bracket, *c_bracket;
103 o_bracket = strchr(bufptr + pmatch[0].rm_so, '(');
104 c_bracket = o_bracket? strchr(o_bracket, ')') : NULL;
107 tmp = para_strdup(bufptr);
108 tmp[pmatch[0].rm_so] = '\0';
109 dest = para_strcat(dest, tmp);
112 arg = para_strdup(o_bracket + 1);
113 arg[c_bracket - o_bracket - 1] = '\0';
114 tmp = make_message(replacement, arg);
116 dest = para_strcat(dest, tmp);
121 dest = para_strcat(dest, bufptr);
122 // PARA_DEBUG_LOG("%s: returning %s\n", __func__, dest);
129 * replace a string according to a list of macros
131 * \param macro_list the array containing a macro/replacement pairs.
132 * \param src the source string
134 * This function just calls s_a_r() for each element of \p macro_list.
136 * \return \p NULL if one of the underlying calls to \p s_a_r returned \p NULL.
137 * Otherwise the completely expanded version of \p src is returned.
139 __must_check __malloc static char *s_a_r_list(const struct para_macro *macro_list,
142 const struct para_macro *mp = macro_list;
143 char *ret = NULL, *tmp = para_strdup(src);
146 ret = s_a_r(tmp, mp->name, mp->replacement);
148 if (!ret) /* syntax error */
153 //PARA_DEBUG_LOG("%s: returning %s\n", __func__, dest);
157 static int lockless_real_query(const char *query)
161 PARA_DEBUG_LOG("%s\n", query);
162 if (mysql_real_query(mysql_ptr, query, strlen(query))) {
163 PARA_ERROR_LOG("real_query error (%s)\n",
164 mysql_error(mysql_ptr));
170 static int real_query(const char *query)
174 mutex_lock(mysql_lock);
175 ret = lockless_real_query(query);
176 mutex_unlock(mysql_lock);
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 mutex_lock(mysql_lock);
189 if (lockless_real_query(query) < 0)
191 result = mysql_store_result(mysql_ptr);
193 PARA_ERROR_LOG("%s", "store_result error\n");
195 mutex_unlock(mysql_lock);
199 * write input from fd to dynamically allocated char array,
200 * but maximal max_size byte. Return size.
202 static int fd2buf(int fd, char **buf_ptr, size_t max_size)
204 const size_t chunk_size = 1024;
206 char *buf = para_malloc(size * sizeof(char)), *p = buf;
209 while ((ret = recv_bin_buffer(fd, p, chunk_size)) > 0) {
211 if ((p - buf) + chunk_size >= size) {
215 if (size > max_size) {
219 tmp = para_realloc(buf, size);
234 static char *escape_blob(const char* old, size_t size)
240 new = para_malloc(2 * size * sizeof(char) + 1);
241 mysql_real_escape_string(mysql_ptr, new, old, size);
245 static char *escape_str(const char* old)
247 return escape_blob(old, strlen(old));
250 static char *escaped_basename(const char *name)
252 char *esc, *bn = para_basename(name);
256 esc = escape_str(bn);
264 int com_na(__a_unused int fd, int argc, char *argv[])
270 return -E_MYSQL_SYNTAX;
271 tmp = escape_str(argv[1]);
274 q = make_message("alter table data add %s char(1) "
275 "not null default 0", tmp);
285 int com_da(__a_unused int fd, int argc, char *argv[])
291 return -E_MYSQL_SYNTAX;
292 tmp = escape_str(argv[1]);
295 q = make_message("alter table data drop %s", tmp);
303 static int com_stradd_picadd(int fd, int argc, char *argv[])
305 char *blob = NULL, *esc_blob = NULL, *q = NULL, *tmp = NULL;
306 const char *fmt, *del_fmt;
307 int ret, stradd = strcmp(argv[0], "picadd");
311 return -E_MYSQL_SYNTAX;
312 if (strlen(argv[1]) >= MAXLINE - 1)
313 return -E_NAMETOOLONG;
318 fmt = "insert into streams (name, def) values ('%s','%s')";
319 del_fmt="delete from streams where name='%s'";
321 size = MEDIUM_BLOB_SIZE;
322 fmt = "insert into pics (name, pic) values ('%s','%s')";
323 del_fmt="delete from pics where pic='%s'";
325 tmp = escape_str(argv[1]);
328 q = make_message(del_fmt, tmp);
334 if ((ret = send_buffer(fd, AWAITING_DATA_MSG) < 0))
336 if ((ret = fd2buf(fd, &blob, size)) < 0)
342 esc_blob = escape_blob(blob, size);
345 tmp = escape_str(argv[1]);
348 q = make_message(fmt, tmp, esc_blob);
359 int com_stradd(int fd, int argc, char *argv[])
361 return com_stradd_picadd(fd, argc, argv);
365 int com_picadd(int fd, int argc, char *argv[])
367 return com_stradd_picadd(fd, argc, argv);
371 * print results to fd
373 static int print_results(int fd, void *result,
374 my_ulonglong top, my_ulonglong left,
375 my_ulonglong bottom, my_ulonglong right)
381 for (i = top; i <= bottom; i++) {
382 row = mysql_fetch_row(result);
385 for (j = left; j <= right; j++) {
386 ret = send_va_buffer(fd, j == left? "%s" : "\t%s",
387 row[j]? row[j] : "NULL");
391 ret = send_buffer(fd, "\n");
401 int com_verb(int fd, int argc, char *argv[])
405 my_ulonglong num_rows, num_fields, top = 0, left = 0;
409 return -E_MYSQL_SYNTAX;
410 tmp = escape_str(argv[1]);
413 result = get_result(tmp);
416 /* return success, because it's ok to have no results */
418 num_fields = mysql_field_count(mysql_ptr);
419 num_rows = mysql_num_rows(result);
421 if (num_fields && num_rows)
422 ret = print_results(fd, result, top, left, num_rows - 1,
424 mysql_free_result(result);
428 /* returns NULL on errors or if there are no atts defined yet */
429 static void *get_all_attributes(void)
431 void *result = get_result("desc data");
432 unsigned int num_rows;
436 num_rows = mysql_num_rows(result);
438 mysql_free_result(result);
441 mysql_data_seek(result, (my_ulonglong)4); /* skip Lastplayed, Numplayed... */
446 * list all attributes
448 int com_laa(int fd, int argc, __a_unused char *argv[])
452 my_ulonglong top = 0, left = 0, bottom, right = 0;
455 return -E_MYSQL_SYNTAX;
456 result = get_all_attributes();
459 bottom = mysql_num_rows(result);
461 return -E_MYSQL_SYNTAX;
463 ret = print_results(fd, result, top, left, bottom, right);
464 mysql_free_result(result);
471 int com_hist(int fd, int argc, char *argv[])
476 my_ulonglong num_rows, top = 0, left = 0, right = 1;
479 return -E_MYSQL_SYNTAX;
481 char *tmp = escape_str(argv[1]);
484 atts = make_message("where %s = '1'", tmp);
487 atts = para_strdup(NULL);
489 q = make_message("select name, to_days(now()) - to_days(lastplayed) from "
490 "data %s order by lastplayed", atts);
492 result = get_result(q);
496 num_rows = mysql_num_rows(result);
499 ret = print_results(fd, result, top, left, num_rows - 1, right);
500 mysql_free_result(result);
505 * get last num audio files
507 int com_last(int fd, int argc, char *argv[])
512 my_ulonglong top = 0, left = 0, right = 0;
519 return -E_MYSQL_SYNTAX;
520 q = make_message("select name from data order by lastplayed desc "
522 result = get_result(q);
526 ret = print_results(fd, result, top, left, mysql_num_rows(result) - 1,
528 mysql_free_result(result);
532 int com_mbox(int fd, int argc, char *argv[])
537 my_ulonglong num_rows, num_fields, top = 0, left = 0;
538 char *query = para_strdup("select concat('From foo@localhost ', "
539 "date_format(Lastplayed, '%a %b %e %T %Y'), "
540 "'\nReceived: from\nTo: bar\n");
543 result = get_all_attributes();
547 while ((row = mysql_fetch_row(result))) {
552 tmp = make_message("%sX-Attribute-%s: ', %s, '\n", query,
557 query = para_strcat(query,
565 char *esc = escape_str(argv[1]), *tmp;
569 tmp = make_message("%s where name LIKE '%s'", query, esc);
574 mysql_free_result(result);
576 result = get_result(query);
579 ret = -E_EMPTY_RESULT;
580 num_fields = mysql_field_count(mysql_ptr);
581 num_rows = mysql_num_rows(result);
582 if (!num_fields || !num_rows)
584 ret = print_results(fd, result, top, left, num_rows - 1,
589 mysql_free_result(result);
594 * get attributes by name. If verbose is not 0, this function returns a string
595 * of the form 'att1="0",att2="1"'... which is used in com_cam() for
596 * constructing a mysql update query. Otherwise the space-separated list of all
597 * attributes which are set in the audio file given by name is returned. Never
598 * returns NULL in *NON VERBOSE* mode.
600 static char *get_atts(char *name, int verbose)
602 char *atts = NULL, *buf, *ebn;
603 void *result = NULL, *result2 = NULL;
606 my_ulonglong num_fields, offset = 4; /* skip Lastplayed, Numplayed... */
609 result2 = get_all_attributes();
612 ebn = escaped_basename(name);
615 buf = make_message("select * from data where name='%s'", ebn);
617 result = get_result(buf);
621 num_fields = mysql_num_fields(result);
624 mysql_data_seek(result2, offset);
625 row = mysql_fetch_row(result);
628 for (i = 4; i < num_fields; i++) {
629 int is_set = row[i] && !strcmp(row[i], "1");
630 row2 = mysql_fetch_row(result2);
631 if (!row2 || !row2[0])
633 if (atts && (verbose || is_set))
634 atts = para_strcat(atts, verbose? "," : " ");
635 if (is_set || verbose)
636 atts = para_strcat(atts, row2[0]);
638 atts = para_strcat(atts, is_set? "=\"1\"" : "=\"0\"");
642 mysql_free_result(result2);
644 mysql_free_result(result);
645 if (!atts && !verbose)
646 atts = para_strdup("(none)");
650 /* never returns NULL in verbose mode */
651 static char *get_meta(char *name, int verbose)
655 char *ebn, *q, *ret = NULL;
656 const char *verbose_fmt =
657 "select concat('lastplayed: ', "
658 "(to_days(now()) - to_days(lastplayed)),"
659 "' day(s). numplayed: ', numplayed, "
660 "', pic: ', pic_id) "
661 "from data where name = '%s'";
662 /* is that really needed? */
663 const char *fmt = "select concat('lastplayed=\\'', lastplayed, "
664 "'\\', numplayed=\\'', numplayed, "
665 "'\\', pic_id=\\'', pic_id, '\\'') "
666 "from data where name = '%s'";
668 if (!(ebn = escaped_basename(name)))
670 q = make_message(verbose? verbose_fmt : fmt, ebn);
672 result = get_result(q);
676 row = mysql_fetch_row(result);
679 ret = para_strdup(row[0]);
682 mysql_free_result(result);
684 ret = para_strdup("(not yet played)");
688 static char *get_dir(char *name)
690 char *ret = NULL, *q, *ebn;
694 if (!(ebn = escaped_basename(name)))
696 q = make_message("select dir from dir where name = '%s'", ebn);
698 result = get_result(q);
702 row = mysql_fetch_row(result);
704 ret = para_strdup(row[0]);
705 mysql_free_result(result);
709 /* never returns NULL */
710 static char *get_current_stream(void)
714 void *result = get_result("select def from streams where "
715 "name = 'current_stream'");
719 row = mysql_fetch_row(result);
722 ret = para_strdup(row[0]);
723 mysql_free_result(result);
727 mysql_free_result(result);
728 return para_strdup("(none)");
732 * Read stream definition of stream streamname and construct mysql
733 * query. Return NULL on errors. If streamname is NULL, use current
734 * stream. If that is also NULL, use query that selects everything.
735 * If filename is NULL, query will list everything, otherwise only
736 * the score of given file.
738 static char *get_query(char *streamname, char *filename, int with_path)
740 char *accept_opts = NULL, *deny_opts = NULL, *score = NULL;
741 char *where_clause, *order, *query;
742 char command[255] = ""; /* buffer for sscanf */
746 char *select_clause = NULL;
748 tmp = get_current_stream();
750 tmp = escape_str(streamname);
754 if (!strcmp(tmp, "(none)")) {
757 char *ret, *ebn = escaped_basename(filename);
760 ret = make_message("select to_days(now()) - "
761 "to_days(lastplayed) from data "
762 "where name = '%s'", ebn);
768 "select concat(dir.dir, '/', dir.name) "
769 "from data, dir where dir.name = data.name "
770 "order by data.lastplayed"
773 "select name from data where name is not NULL "
774 "order by lastplayed"
778 query = make_message("select def from streams where name = '%s'",
780 result = get_result(query);
785 row = mysql_fetch_row(result);
791 char *arg, *line = end;
793 if (!(end = strchr(line, '\n')))
797 if (sscanf(line, "%200s%n", command, &n) < 1)
800 if (!strcmp(command, "accept:")) {
801 char *tmp2 = s_a_r_list(mysql_macro_list, arg);
803 accept_opts = para_strcat(
804 accept_opts, " or ");
805 accept_opts = para_strcat(accept_opts, tmp2);
809 if (!strcmp(command, "deny:")) {
810 char *tmp2 = s_a_r_list(mysql_macro_list, arg);
812 deny_opts = para_strcat(deny_opts, " or ");
813 deny_opts = para_strcat(deny_opts, tmp2);
817 if (!score && !strcmp(command, "score:"))
818 score = s_a_r_list(mysql_macro_list, arg);
821 score = s_a_r_list(mysql_macro_list, conf.mysql_default_score_arg);
826 char *ebn = escaped_basename(filename);
829 select_clause = make_message("select %s from data ", score);
831 where_clause = make_message( "where name = '%s' ", ebn);
833 order = para_strdup("");
836 select_clause = para_strdup(with_path?
837 "select concat(dir.dir, '/', dir.name) from data, dir "
838 "where dir.name = data.name "
840 "select name from data where name is not NULL");
841 order = make_message("order by -(%s)", score);
843 if (accept_opts && deny_opts) {
844 where_clause = make_message("and ((%s) and not (%s)) ",
845 accept_opts, deny_opts);
848 if (accept_opts && !deny_opts) {
849 where_clause = make_message("and (%s) ", accept_opts);
852 if (!accept_opts && deny_opts) {
853 where_clause = make_message("and not (%s) ", deny_opts);
856 where_clause = para_strdup("");
858 query = make_message("%s %s %s", select_clause, where_clause, order);
868 mysql_free_result(result);
875 * This is called from server and from some commands. Name must not be NULL
876 * Never returns NULL.
878 static char *get_selector_info(char *name)
880 char *meta, *atts, *info, *dir, *query, *stream;
882 MYSQL_ROW row = NULL;
885 return para_strdup("(none)");
886 stream = get_current_stream();
887 meta = get_meta(name, 1);
888 atts = get_atts(name, 0);
891 query = get_query(stream, name, 0); /* FIXME: pass stream == NULL instead? */
894 result = get_result(query);
897 row = mysql_fetch_row(result);
899 info = make_message("dbinfo1:dir: %s\n"
900 "dbinfo2:stream: %s, %s, score: %s\n"
902 dir? dir : "(not contained in table)",
904 (result && row && row[0])? row[0] : "(no score)",
911 mysql_free_result(result);
915 /* might return NULL */
916 static char *get_current_audio_file(void)
920 name = para_basename(mmd->filename);
925 /* If called as child, mmd_lock must be held */
926 static void update_mmd(char *info)
928 PARA_DEBUG_LOG("%s", "updating shared memory area\n");
929 strncpy(mmd->selector_info, info, MMD_INFO_SIZE - 1);
930 mmd->selector_info[MMD_INFO_SIZE - 1] = '\0';
933 static void refresh_selector_info(void)
935 char *name = get_current_audio_file();
940 info = get_selector_info(name);
948 /* list attributes / print database info */
949 static int com_la_info(int fd, int argc, char *argv[])
951 char *name = NULL, *meta = NULL, *atts = NULL, *dir = NULL;
952 int ret, la = strcmp(argv[0], "info");
955 ret = -E_GET_AUDIO_FILE;
956 if (!(name = get_current_audio_file()))
958 ret = send_va_buffer(fd, "%s\n", name);
963 if (!(name = escaped_basename(argv[1])))
966 meta = get_meta(name, 1);
967 atts = get_atts(name, 0);
970 ret = send_va_buffer(fd, "%s\n", atts);
972 ret = send_va_buffer(fd, "dir: %s\n" "%s\n" "attributes: %s\n",
973 dir? dir : "(not contained in table)", meta, atts);
982 /* list attributes */
983 int com_la(int fd, int argc, char *argv[])
985 return com_la_info(fd, argc, argv);
988 /* print database info */
989 int com_info(int fd, int argc, char *argv[])
991 return com_la_info(fd, argc, argv);
994 static int change_stream(const char *stream)
998 query = make_message("update streams set def='%s' "
999 "where name = 'current_stream'", stream);
1000 ret = real_query(query);
1005 static int get_pic_id_by_name(char *name)
1008 void *result = NULL;
1012 if (!(ebn = escaped_basename(name)))
1014 q = make_message("select pic_id from data where name = '%s'", ebn);
1016 result = get_result(q);
1020 row = mysql_fetch_row(result);
1024 mysql_free_result(result);
1028 static int remove_entry(const char *name)
1030 char *q, *ebn = escaped_basename(name);
1031 int ret = -E_ESCAPE;
1035 q = make_message("delete from data where name = '%s'", ebn);
1036 real_query(q); /* ignore errors */
1038 q = make_message("delete from dir where name = '%s'", ebn);
1039 real_query(q); /* ignore errors */
1047 static int add_entry(const char *name)
1049 char *q, *dn, *ebn = NULL, *edn = NULL;
1052 if (!name || !*name)
1053 return -E_MYSQL_SYNTAX;
1054 ebn = escaped_basename(name);
1057 ret = -E_MYSQL_SYNTAX;
1058 dn = para_dirname(name);
1062 edn = escape_str(dn);
1066 q = make_message("insert into data (name, pic_id) values "
1067 "('%s', '%s')", ebn, "1");
1068 ret = real_query(q);
1069 // ret = 1; PARA_DEBUG_LOG("q: %s\n", q);
1073 q = make_message("insert into dir (name, dir) values "
1074 "('%s', '%s')", ebn, edn);
1075 // ret = 1; PARA_DEBUG_LOG("q: %s\n", q);
1076 ret = real_query(q);
1087 * remove/add entries
1089 static int com_rm_ne(__a_unused int fd, int argc, char *argv[])
1091 int ne = !strcmp(argv[0], "ne");
1094 return -E_MYSQL_SYNTAX;
1095 for (i = 1; i < argc; i++) {
1096 ret = remove_entry(argv[i]);
1101 ret = add_entry(argv[i]);
1111 int com_rm(int fd, int argc, char *argv[])
1113 return com_rm_ne(fd, argc, argv);
1119 int com_ne(int fd, int argc, char *argv[])
1121 return com_ne(fd, argc, argv);
1127 int com_mv(__a_unused int fd, int argc, char *argv[])
1129 char *q, *dn, *ebn1 = NULL, *ebn2 = NULL, *edn = NULL;
1133 return -E_MYSQL_SYNTAX;
1135 ebn1 = escaped_basename(argv[1]);
1136 ebn2 = escaped_basename(argv[2]);
1137 if (!ebn1 || !ebn2 || !*ebn1 || !*ebn2)
1139 ret = -E_MYSQL_SYNTAX;
1140 if (!strcmp(ebn1, ebn2))
1142 remove_entry(argv[2]); /* no need to escape, ignore error */
1143 q = make_message("update data set name = '%s' where name = '%s'",
1145 ret = real_query(q);
1149 ret = -E_AUDIO_FILE;
1150 if (!mysql_affected_rows(mysql_ptr))
1152 q = make_message("update dir set name = '%s' where name = '%s'",
1154 ret = real_query(q);
1160 dn = para_dirname(argv[2]);
1164 edn = escape_str(dn);
1171 q = make_message("update dir set dir = '%s' where name = '%s'",
1173 ret = real_query(q);
1185 static int com_set(__a_unused int fd, int argc, char *argv[])
1190 const char *field = strcmp(argv[0], "picass")? "numplayed" : "pic_id";
1193 return -E_MYSQL_SYNTAX;
1195 for (i = 2; i < argc; i++) {
1196 ebn = escaped_basename(argv[i]);
1199 q = make_message("update data set %s = %lu "
1200 "where name = '%s'", field, id, ebn);
1202 ret = real_query(q);
1211 * snp: set numplayed
1213 int com_picass(int fd, int argc, char *argv[])
1215 return com_set(fd, argc, argv);
1219 * snp: set numplayed
1221 int com_snp(int fd, int argc, char *argv[])
1223 int ret = com_set(fd, argc, argv);
1225 refresh_selector_info();
1230 * picch: change entry's name in pics table
1232 int com_picch(__a_unused int fd, int argc, char *argv[])
1239 return -E_MYSQL_SYNTAX;
1242 tmp = escape_str(argv[2]);
1245 q = make_message("update pics set name = '%s' where id = %lu", tmp, id);
1247 ret = real_query(q);
1253 * piclist: print list of pics in db
1255 int com_piclist(__a_unused int fd, int argc, __a_unused char *argv[])
1257 void *result = NULL;
1259 unsigned long *length;
1263 return -E_MYSQL_SYNTAX;
1264 result = get_result("select id,name,pic from pics order by id");
1267 while ((row = mysql_fetch_row(result))) {
1268 length = mysql_fetch_lengths(result);
1269 if (!row || !row[0] || !row[1] || !row[2])
1271 ret = send_va_buffer(fd, "%s\t%lu\t%s\n", row[0], length[2], row[1]);
1277 mysql_free_result(result);
1282 * picdel: delete picture from database
1284 int com_picdel(int fd, int argc, char *argv[])
1292 return -E_MYSQL_SYNTAX;
1293 for (i = 1; i < argc; i++) {
1295 q = make_message("delete from pics where id = %lu", id);
1296 ret = real_query(q);
1300 aff = mysql_affected_rows(mysql_ptr);
1302 ret = send_va_buffer(fd, "No such id: %lu\n", id);
1307 q = make_message("update data set pic_id = 1 where pic_id = %lu", id);
1308 ret = real_query(q);
1314 * pic: get picture by name or by number
1316 int com_pic(int fd, int argc, char *argv[])
1318 void *result = NULL;
1320 unsigned long *length, id;
1322 char *q, *name = NULL;
1325 ret = -E_GET_AUDIO_FILE;
1326 name = get_current_audio_file();
1329 name = escaped_basename(argv[1]);
1334 id = atoi(name + 1);
1336 id = get_pic_id_by_name(name);
1340 q = make_message("select pic from pics where id = '%lu'", id);
1341 result = get_result(q);
1345 row = mysql_fetch_row(result);
1347 if (!row || !row[0])
1349 length = mysql_fetch_lengths(result);
1350 ret = send_bin_buffer(fd, row[0], *length);
1352 mysql_free_result(result);
1357 int com_strdel(__a_unused int fd, int argc, char *argv[])
1363 return -E_MYSQL_SYNTAX;
1364 tmp = escape_str(argv[1]);
1367 q = make_message("delete from streams where name='%s'", tmp);
1369 ret = real_query(q);
1377 int com_ls(int fd, int argc, char *argv[])
1382 my_ulonglong num_rows, top = 0, left = 0, right = 0;
1385 return -E_MYSQL_SYNTAX;
1387 char *tmp = escape_str(argv[1]);
1390 q = make_message("select name from data where name like '%s'",
1394 q = para_strdup("select name from data");
1395 result = get_result(q);
1399 num_rows = mysql_num_rows(result);
1402 ret = print_results(fd, result, top, left, num_rows - 1, right);
1403 mysql_free_result(result);
1410 int com_summary(__a_unused int fd, int argc, __a_unused char *argv[])
1415 void *result2 = NULL;
1416 const char *fmt = "select count(name) from data where %s='1'";
1417 int ret = -E_NORESULT;
1420 return -E_MYSQL_SYNTAX;
1421 result = get_all_attributes();
1424 while ((row = mysql_fetch_row(result))) {
1431 buf = make_message(fmt, row[0]);
1432 result2 = get_result(buf);
1437 row2 = mysql_fetch_row(result2);
1438 if (!row2 || !row2[0])
1440 ret = send_va_buffer(fd, "%s\t%s\n", row[0], row2[0]);
1447 mysql_free_result(result2);
1449 mysql_free_result(result);
1453 static int get_numplayed(char *name)
1457 const char *fmt = "select numplayed from data where name = '%s'";
1458 char *buf = make_message(fmt, name);
1459 int ret = -E_NORESULT;
1461 result = get_result(buf);
1466 row = mysql_fetch_row(result);
1467 if (!row || !row[0])
1472 mysql_free_result(result);
1476 static int update_audio_file(char *name)
1479 const char *fmt1 = "update data set lastplayed = now() where name = '%s'";
1480 const char *fmt2 = "update data set numplayed = %i where name = '%s'";
1482 char *ebn = escaped_basename(name);
1487 q = make_message(fmt1, ebn);
1488 ret = real_query(q);
1492 ret = get_numplayed(ebn);
1495 q = make_message(fmt2, ret + 1, ebn);
1496 ret = real_query(q);
1503 static void update_audio_file_server_handler(char *name)
1506 info = get_selector_info(name);
1509 update_audio_file(name);
1512 int com_us(__a_unused int fd, int argc, char *argv[])
1518 return -E_MYSQL_SYNTAX;
1519 tmp = escape_str(argv[1]);
1522 ret = update_audio_file(argv[1]);
1525 refresh_selector_info();
1529 /* select previous / next stream */
1530 static int com_ps_ns(__a_unused int fd, int argc, char *argv[])
1532 char *query, *stream = get_current_stream();
1533 void *result = get_result("select name from streams");
1536 my_ulonglong num_rows, match, i;
1538 ret = -E_MYSQL_SYNTAX;
1544 num_rows = mysql_num_rows(result);
1545 ret = -E_EMPTY_RESULT;
1549 for (i = 0; i < num_rows; i++) {
1550 row = mysql_fetch_row(result);
1551 if (!row || !row[0])
1553 if (!strcmp(row[0], "current_stream"))
1555 if (!strcmp(row[0], stream))
1562 if (!strcmp(argv[0], "ps"))
1563 i = match > 0? match - 1 : num_rows - 1;
1565 i = match < num_rows - 1? match + 1 : 0;
1567 mysql_data_seek(result, i);
1568 row = mysql_fetch_row(result);
1569 if (!row || !row[0])
1571 if (!strcmp(row[0], "current_stream")) {
1572 if (!strcmp(argv[0], "ps")) {
1573 i = match < 2? match + num_rows - 2 : match - 2;
1576 i = i > num_rows - 1? i - num_rows : i;
1578 mysql_data_seek(result, i);
1579 row = mysql_fetch_row(result);
1580 if (!row || !row[0])
1583 query = make_message("update streams set def='%s' where name = "
1584 "'current_stream'", row[0]);
1585 ret = real_query(query);
1587 refresh_selector_info();
1591 mysql_free_result(result);
1595 /* select previous stream */
1596 int com_ps(int fd, int argc, char *argv[])
1598 return com_ps_ns(fd, argc, argv);
1601 /* select next stream */
1602 int com_ns(int fd, int argc, char *argv[])
1604 return com_ps_ns(fd, argc, argv);
1608 int com_streams(int fd, int argc, __a_unused char *argv[])
1610 unsigned int num_rows;
1611 int i, ret = -E_NORESULT;
1615 if (argc > 1 && strcmp(argv[1], "current_stream"))
1616 return -E_MYSQL_SYNTAX;
1618 char *cs = get_current_stream();
1619 ret = send_va_buffer(fd, "%s\n", cs);
1623 result = get_result("select name from streams");
1626 num_rows = mysql_num_rows(result);
1631 for (i = 0; i < num_rows; i++) {
1632 row = mysql_fetch_row(result);
1633 if (!row || !row[0])
1635 if (strcmp(row[0], "current_stream"))
1636 send_va_buffer(fd, "%s\n", row[0]);
1641 mysql_free_result(result);
1645 /* query stream definition */
1646 int com_strq(int fd, int argc, char *argv[])
1654 ret = -E_GET_STREAM;
1655 name = get_current_stream();
1658 name = escaped_basename(argv[1]);
1663 query = make_message("select def from streams where name='%s'", name);
1665 result = get_result(query);
1670 row = mysql_fetch_row(result);
1671 if (!row || !row[0])
1673 /* no '\n' needed */
1674 ret = send_buffer(fd, row[0]);
1677 mysql_free_result(result);
1681 /* change stream / change stream and play */
1682 static int com_cs_csp(int fd, int argc, char *argv[])
1684 int ret, stream_change;
1685 char *query, *stream = NULL;
1686 char *old_stream = get_current_stream();
1687 int csp = !strcmp(argv[0], "csp");
1689 ret = -E_MYSQL_SYNTAX;
1695 ret = send_va_buffer(fd, "%s\n", old_stream);
1699 /* test if stream is valid, no need to escape argv[1] */
1700 query = get_query(argv[1], NULL, 0);
1705 stream = escape_str(argv[1]);
1708 stream_change = strcmp(stream, old_stream);
1709 if (stream_change) {
1710 ret = change_stream(stream);
1713 refresh_selector_info();
1717 mmd->new_vss_status_flags |= VSS_PLAYING;
1719 mmd->new_vss_status_flags |= VSS_NEXT;
1730 int com_cs(int fd, int argc, char *argv[])
1732 return com_cs_csp(fd, argc, argv);
1735 /* change stream and play */
1736 int com_csp(int fd, int argc, char *argv[])
1738 return com_cs_csp(fd, argc, argv);
1741 /* score list / skip */
1742 static int com_sl_skip(int fd, int argc, char *argv[])
1744 void *result = NULL;
1746 int ret, i, skip = !strcmp(argv[0], "skip");
1747 char *query, *stream, *tmp;
1748 unsigned int num_rows, num;
1751 return -E_MYSQL_SYNTAX;
1752 num = atoi(argv[1]);
1754 return -E_MYSQL_SYNTAX;
1756 stream = get_current_stream();
1758 return -E_GET_STREAM;
1760 stream = escape_str(argv[2]);
1764 tmp = get_query(stream, NULL, 0);
1767 return -E_GET_QUERY;
1768 query = make_message("%s limit %d", tmp, num);
1771 result = get_result(query);
1775 ret = -E_EMPTY_RESULT;
1776 num_rows = mysql_num_rows(result);
1779 for (i = 0; i < num_rows && i < num; i++) {
1780 row = mysql_fetch_row(result);
1782 send_va_buffer(fd, "Skipping %s\n", row[0]);
1783 update_audio_file(row[0]);
1785 send_va_buffer(fd, "%s\n", row[0]? row[0]: "BUG");
1790 mysql_free_result(result);
1795 int com_sl(int fd, int argc, char *argv[])
1797 return com_sl_skip(fd, argc, argv);
1801 int com_skip(int fd, int argc, char *argv[])
1803 return com_sl_skip(fd, argc, argv);
1807 * update attributes of name
1809 static int update_atts(int fd, char *name, char *atts)
1812 char *ebn, *q, *old, *new = NULL;
1816 ebn = escaped_basename(name);
1819 q = make_message("update data set %s where name = '%s'", atts, ebn);
1820 old = get_atts(ebn, 0);
1821 send_va_buffer(fd, "old: %s\n", old);
1823 ret = real_query(q);
1827 new = get_atts(ebn, 0);
1828 ret = send_va_buffer(fd, "new: %s\n", new);
1838 int com_sa(int fd, int argc, char *argv[])
1841 char *atts = NULL, *name;
1844 return -E_MYSQL_SYNTAX;
1845 for (i = 1; i < argc; i++) {
1847 char *esc, *tmp, *p =argv[i];
1848 int len = strlen(p);
1852 switch (p[len - 1]) {
1863 esc = escape_str(p);
1866 tmp = make_message("%s%s='%s'", atts? "," : "", esc,
1869 atts = para_strcat(atts, tmp);
1875 if (i >= argc) { /* no name given, use current af */
1876 ret = -E_GET_AUDIO_FILE;
1877 if (!(name = get_current_audio_file()))
1879 ret = update_atts(fd, name, atts);
1883 for (; argv[i] && ret >= 0; i++)
1884 ret = update_atts(fd, argv[i], atts);
1886 refresh_selector_info();
1895 int com_cam(int fd, int argc, char *argv[])
1897 char *name = NULL, *meta = NULL, *atts = NULL;
1901 return -E_MYSQL_SYNTAX;
1902 if (!(name = escaped_basename(argv[1])))
1905 if (!(atts = get_atts(name, 1)))
1908 if (!(meta = get_meta(name, 0)))
1910 for (i = 2; i < argc; i++) {
1913 if (!(ebn = escaped_basename(argv[i])))
1915 ret = send_va_buffer(fd, "updating %s\n", ebn);
1920 q = make_message("update data set %s where name = '%s'",
1922 if ((ret = update_atts(fd, ebn, atts)) >= 0)
1923 ret = real_query(q);
1943 static int com_vrfy_clean(int fd, int argc, __a_unused char *argv[])
1946 int ret, vrfy_mode = strcmp(argv[0], "clean");
1947 void *result = NULL;
1950 my_ulonglong num_rows, top = 0, left = 0, right = 0;
1953 return -E_MYSQL_SYNTAX;
1955 result = get_result("select data.name from data left join dir on "
1956 "dir.name = data.name where dir.name is NULL");
1959 num_rows = mysql_num_rows(result);
1961 ret = send_buffer(fd, "No invalid entries\n");
1965 send_va_buffer(fd, "found %lli invalid entr%s\n", num_rows,
1966 num_rows == 1? "y" : "ies");
1967 ret = print_results(fd, result, top, left, num_rows - 1, right);
1970 while ((row = mysql_fetch_row(result))) {
1975 escaped_name = escape_str(row[0]);
1978 send_va_buffer(fd, "deleting %s\n", escaped_name);
1979 query = make_message("delete from data where name = '%s'",
1981 ret = real_query(query);
1989 mysql_free_result(result);
1996 int com_vrfy(int fd, int argc, char **argv)
1998 return com_vrfy_clean(fd, argc, argv);
2004 int com_clean(int fd, int argc, char **argv)
2006 return com_vrfy_clean(fd, argc, argv);
2009 static FILE *out_file;
2011 static int mysql_write_tmp_file(const char *dir, const char *name)
2013 int ret = -E_TMPFILE;
2014 char *msg = make_message("%s\t%s\n", dir, name);
2015 if (fputs(msg, out_file) != EOF)
2024 int com_upd(int fd, int argc, __a_unused char *argv[])
2026 char *tempname = NULL, *query = NULL;
2027 int ret, out_fd = -1, num = 0;
2028 void *result = NULL;
2029 unsigned int num_rows;
2033 return -E_MYSQL_SYNTAX;
2035 tempname = para_strdup("/tmp/mysql.tmp.XXXXXX");
2036 ret = para_mkstemp(tempname, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
2040 out_file = fdopen(out_fd, "w");
2045 if (find_audio_files(conf.mysql_audio_file_dir_arg, mysql_write_tmp_file) < 0)
2047 num = ftell(out_file);
2049 * we have to make sure the file hit the disk before we call
2054 PARA_DEBUG_LOG("wrote tempfile %s (%d bytes)\n", tempname, num);
2057 if ((ret = real_query("delete from dir")) < 0)
2059 query = make_message("load data infile '%s' ignore into table dir "
2060 "fields terminated by '\t' lines terminated by '\n' "
2061 "(dir, name)", tempname);
2062 ret = real_query(query);
2066 result = get_result("select dir.name from dir left join data on "
2067 "data.name = dir.name where data.name is NULL");
2071 num_rows = mysql_num_rows(result);
2073 ret = send_buffer(fd, "no new entries\n");
2076 while ((row = mysql_fetch_row(result))) {
2081 send_va_buffer(fd, "new entry: %s\n", row[0]);
2082 erow = escape_str(row[0]);
2085 query = make_message("insert into data (name, pic_id) values "
2086 "('%s','%s')", erow, "1");
2088 ret = real_query(query);
2101 mysql_free_result(result);
2105 static char **server_get_audio_file_list(unsigned int num)
2107 char **list = para_malloc((num + 1) * sizeof(char *));
2108 char *tmp, *query, *stream = get_current_stream();
2109 void *result = NULL;
2110 unsigned int num_rows;
2114 tmp = get_query(stream, NULL, 1);
2118 query = make_message("%s limit %d", tmp, num);
2120 result = get_result(query);
2124 num_rows = mysql_num_rows(result);
2127 for (i = 0; i < num_rows && i < num; i++) {
2128 row = mysql_fetch_row(result);
2129 if (!row || !row[0])
2131 list[i] = para_strdup(row[0]);
2144 mysql_free_result(result);
2149 * connect to mysql server, return mysql pointer on success, -E_NOTCONN
2150 * on errors. Called from parent on startup and also from com_cdb().
2152 static int init_mysql_server(void)
2154 char *u = conf.mysql_user_arg? conf.mysql_user_arg : para_logname();
2157 mysql_ptr = mysql_init(NULL);
2159 PARA_CRIT_LOG("%s", "mysql init error\n");
2162 if (conf.mysql_port_arg < 0)
2163 return -E_MYSQL_SYNTAX;
2164 port = conf.mysql_port_arg;
2165 PARA_DEBUG_LOG("connecting: %s@%s:%d\n", u, conf.mysql_host_arg, port);
2166 if (!conf.mysql_user_arg)
2169 * If host is NULL a connection to the local host is assumed,
2170 * If user is NULL, the current user is assumed
2172 if (!(mysql_ptr = mysql_real_connect(mysql_ptr,
2173 conf.mysql_host_arg,
2174 conf.mysql_user_arg,
2175 conf.mysql_passwd_arg,
2176 conf.mysql_database_arg,
2178 PARA_CRIT_LOG("%s", "connect error\n");
2181 PARA_INFO_LOG("%s", "success\n");
2185 /* mmd lock must be held */
2186 static void write_msg2mmd(int success)
2188 sprintf(mmd->selector_info, "dbinfo1:%s\ndbinfo2:mysql-%s\ndbinfo3:\n",
2189 success < 0? PARA_STRERROR(-success) :
2190 "successfully connected to mysql server",
2191 success < 0? "" : mysql_get_server_info(mysql_ptr));
2194 /* create database */
2195 int com_cdb(int fd, int argc, char *argv[])
2201 PARA_INFO_LOG("%s", "closing database\n");
2202 mysql_close(mysql_ptr);
2204 /* dont use any database */
2205 conf.mysql_database_arg = NULL; /* leak? */
2206 ret = -E_MYSQL_INIT;
2207 if (init_mysql_server() < 0 || !mysql_ptr)
2210 conf.mysql_database_arg = para_strdup("paraslash");
2213 conf.mysql_database_arg = escape_str(argv[1]);
2214 if (!conf.mysql_database_arg)
2217 query = make_message("create database %s", conf.mysql_database_arg);
2218 ret = real_query(query);
2222 /* reconnect with database just created */
2223 mysql_close(mysql_ptr);
2224 ret = -E_MYSQL_INIT;
2225 if (init_mysql_server() < 0 || !mysql_ptr)
2231 if (real_query("create table data (name varchar(255) binary not null "
2233 "lastplayed datetime not null default "
2235 "numplayed int not null default 0, "
2236 "pic_id bigint unsigned not null default 1)") < 0)
2238 if (real_query("create table dir (name varchar(255) binary not null "
2239 "primary key, dir varchar(255) default null)") < 0)
2241 if (real_query("create table pics ("
2242 "id bigint(20) unsigned not null primary key "
2244 "name varchar(255) binary not null, "
2245 "pic mediumblob not null)") < 0)
2247 if (real_query("create table streams ("
2248 "name varchar(255) binary not null primary key, "
2249 "def blob not null)") < 0)
2251 if (real_query("insert into streams (name, def) values "
2252 "('current_stream', '(none)')") < 0)
2254 ret = send_va_buffer(fd, "successfully created database %s\n",
2255 conf.mysql_database_arg);
2260 static void shutdown_connection(void)
2265 PARA_NOTICE_LOG("%s", "shutting down mysql connection\n");
2266 mysql_close(mysql_ptr);
2270 ret = mutex_destroy(mysql_lock);
2272 PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
2278 * the init function of the mysql-based audio file selector
2280 * \param db pointer to the struct to initialize
2282 * Check the command line options and initialize all function pointers of \a
2283 * db. Connect to the mysql server and initialize the info string.
2285 * \return This function returns success even if it could not connect
2286 * to the mysql server. This is because the connect is expected to fail
2287 * if there the paraslash database is not yet created. This gives the
2288 * user a chance to send the "cdb" to create the database.
2290 * \sa struct audio_file_selector, misc_meta_data::selector_info,
2293 int mysql_selector_init(struct audio_file_selector *db)
2297 if (!conf.mysql_passwd_given)
2298 return -E_NO_MYSQL_PASSWD;
2299 if (!conf.mysql_audio_file_dir_given)
2300 return -E_NO_AF_DIR;
2302 db->cmd_list = mysql_selector_cmds;
2303 db->get_audio_file_list = server_get_audio_file_list;
2304 db->update_audio_file = update_audio_file_server_handler;
2305 db->shutdown = shutdown_connection;
2310 ret = init_mysql_server();
2312 PARA_WARNING_LOG("%s\n", PARA_STRERROR(-ret));
2314 return 1; /* return success even if connect failed to give the
2315 * user the chance to exec com_cdb