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"
16 #include "afs_common.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 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 if (regcomp(&preg, macro_name, 0) != 0)
100 while (regexec(&preg, bufptr, nmatch, pmatch, eflags)
102 char *tmp, *arg, *o_bracket, *c_bracket;
104 o_bracket = strchr(bufptr + pmatch[0].rm_so, '(');
105 c_bracket = o_bracket? strchr(o_bracket, ')') : NULL;
108 tmp = para_strdup(bufptr);
109 tmp[pmatch[0].rm_so] = '\0';
110 dest = para_strcat(dest, tmp);
113 arg = para_strdup(o_bracket + 1);
114 arg[c_bracket - o_bracket - 1] = '\0';
115 tmp = make_message(replacement, arg);
117 dest = para_strcat(dest, tmp);
122 dest = para_strcat(dest, bufptr);
123 // PARA_DEBUG_LOG("%s: returning %s\n", __func__, dest);
130 * replace a string according to a list of macros
132 * \param macro_list the array containing a macro/replacement pairs.
133 * \param src the source string
135 * This function just calls s_a_r() for each element of \p macro_list.
137 * \return \p NULL if one of the underlying calls to \p s_a_r returned \p NULL.
138 * Otherwise the completely expanded version of \p src is returned.
140 __must_check __malloc static char *s_a_r_list(const struct para_macro *macro_list,
143 const struct para_macro *mp = macro_list;
144 char *ret = NULL, *tmp = para_strdup(src);
147 ret = s_a_r(tmp, mp->name, mp->replacement);
149 if (!ret) /* syntax error */
154 //PARA_DEBUG_LOG("%s: returning %s\n", __func__, dest);
158 static int lockless_real_query(const char *query)
162 PARA_DEBUG_LOG("%s\n", query);
163 if (mysql_real_query(mysql_ptr, query, strlen(query))) {
164 PARA_ERROR_LOG("real_query error (%s)\n",
165 mysql_error(mysql_ptr));
171 static int real_query(const char *query)
175 mutex_lock(mysql_lock);
176 ret = lockless_real_query(query);
177 mutex_unlock(mysql_lock);
182 * Use open connection given by mysql_ptr to query server. Returns a
183 * result pointer on succes and NULL on errors
185 static struct MYSQL_RES *get_result(const char *query)
189 mutex_lock(mysql_lock);
190 if (lockless_real_query(query) < 0)
192 result = mysql_store_result(mysql_ptr);
194 PARA_ERROR_LOG("%s", "store_result error\n");
196 mutex_unlock(mysql_lock);
200 * write input from fd to dynamically allocated char array,
201 * but maximal max_size byte. Return size.
203 static int fd2buf(int fd, char **buf_ptr, size_t max_size)
205 const size_t chunk_size = 1024;
207 char *buf = para_malloc(size * sizeof(char)), *p = buf;
210 while ((ret = recv_bin_buffer(fd, p, chunk_size)) > 0) {
212 if ((p - buf) + chunk_size >= size) {
216 if (size > max_size) {
220 tmp = para_realloc(buf, size);
235 static char *escape_blob(const char* old, size_t size)
241 new = para_malloc(2 * size * sizeof(char) + 1);
242 mysql_real_escape_string(mysql_ptr, new, old, size);
246 static char *escape_str(const char* old)
248 return escape_blob(old, strlen(old));
251 static char *escaped_basename(const char *name)
253 char *esc, *bn = para_basename(name);
257 esc = escape_str(bn);
265 int com_na(__a_unused int fd, int argc, char *argv[])
271 return -E_MYSQL_SYNTAX;
272 tmp = escape_str(argv[1]);
275 q = make_message("alter table data add %s char(1) "
276 "not null default 0", tmp);
286 int com_da(__a_unused int fd, int argc, char *argv[])
292 return -E_MYSQL_SYNTAX;
293 tmp = escape_str(argv[1]);
296 q = make_message("alter table data drop %s", tmp);
304 static int com_stradd_picadd(int fd, int argc, char *argv[])
306 char *blob = NULL, *esc_blob = NULL, *q = NULL, *tmp = NULL;
307 const char *fmt, *del_fmt;
308 int ret, stradd = strcmp(argv[0], "picadd");
312 return -E_MYSQL_SYNTAX;
313 if (strlen(argv[1]) >= MAXLINE - 1)
314 return -E_NAMETOOLONG;
319 fmt = "insert into streams (name, def) values ('%s','%s')";
320 del_fmt="delete from streams where name='%s'";
322 size = MEDIUM_BLOB_SIZE;
323 fmt = "insert into pics (name, pic) values ('%s','%s')";
324 del_fmt="delete from pics where pic='%s'";
326 tmp = escape_str(argv[1]);
329 q = make_message(del_fmt, tmp);
335 if ((ret = send_buffer(fd, AWAITING_DATA_MSG) < 0))
337 if ((ret = fd2buf(fd, &blob, size)) < 0)
343 esc_blob = escape_blob(blob, size);
346 tmp = escape_str(argv[1]);
349 q = make_message(fmt, tmp, esc_blob);
360 int com_stradd(int fd, int argc, char *argv[])
362 return com_stradd_picadd(fd, argc, argv);
366 int com_picadd(int fd, int argc, char *argv[])
368 return com_stradd_picadd(fd, argc, argv);
372 * print results to fd
374 static int print_results(int fd, void *result,
375 my_ulonglong top, my_ulonglong left,
376 my_ulonglong bottom, my_ulonglong right)
382 for (i = top; i <= bottom; i++) {
383 row = mysql_fetch_row(result);
386 for (j = left; j <= right; j++) {
387 ret = send_va_buffer(fd, j == left? "%s" : "\t%s",
388 row[j]? row[j] : "NULL");
392 ret = send_buffer(fd, "\n");
402 int com_verb(int fd, int argc, char *argv[])
406 my_ulonglong num_rows, num_fields, top = 0, left = 0;
410 return -E_MYSQL_SYNTAX;
411 tmp = escape_str(argv[1]);
414 result = get_result(tmp);
417 /* return success, because it's ok to have no results */
419 num_fields = mysql_field_count(mysql_ptr);
420 num_rows = mysql_num_rows(result);
422 if (num_fields && num_rows)
423 ret = print_results(fd, result, top, left, num_rows - 1,
425 mysql_free_result(result);
429 /* returns NULL on errors or if there are no atts defined yet */
430 static void *get_all_attributes(void)
432 void *result = get_result("desc data");
433 unsigned int num_rows;
437 num_rows = mysql_num_rows(result);
439 mysql_free_result(result);
442 mysql_data_seek(result, (my_ulonglong)4); /* skip Lastplayed, Numplayed... */
447 * list all attributes
449 int com_laa(int fd, int argc, __a_unused char *argv[])
453 my_ulonglong top = 0, left = 0, bottom, right = 0;
456 return -E_MYSQL_SYNTAX;
457 result = get_all_attributes();
460 bottom = mysql_num_rows(result);
462 return -E_MYSQL_SYNTAX;
464 ret = print_results(fd, result, top, left, bottom, right);
465 mysql_free_result(result);
472 int com_hist(int fd, int argc, char *argv[])
477 my_ulonglong num_rows, top = 0, left = 0, right = 1;
480 return -E_MYSQL_SYNTAX;
482 char *tmp = escape_str(argv[1]);
485 atts = make_message("where %s = '1'", tmp);
488 atts = para_strdup(NULL);
490 q = make_message("select name, to_days(now()) - to_days(lastplayed) from "
491 "data %s order by lastplayed", atts);
493 result = get_result(q);
497 num_rows = mysql_num_rows(result);
500 ret = print_results(fd, result, top, left, num_rows - 1, right);
501 mysql_free_result(result);
506 * get last num audio files
508 int com_last(int fd, int argc, char *argv[])
513 my_ulonglong top = 0, left = 0, right = 0;
520 return -E_MYSQL_SYNTAX;
521 q = make_message("select name from data order by lastplayed desc "
523 result = get_result(q);
527 ret = print_results(fd, result, top, left, mysql_num_rows(result) - 1,
529 mysql_free_result(result);
533 int com_mbox(int fd, int argc, char *argv[])
538 my_ulonglong num_rows, num_fields, top = 0, left = 0;
539 char *query = para_strdup("select concat('From foo@localhost ', "
540 "date_format(Lastplayed, '%a %b %e %T %Y'), "
541 "'\nReceived: from\nTo: bar\n");
544 result = get_all_attributes();
548 while ((row = mysql_fetch_row(result))) {
553 tmp = make_message("%sX-Attribute-%s: ', %s, '\n", query,
558 query = para_strcat(query,
566 char *esc = escape_str(argv[1]), *tmp;
570 tmp = make_message("%s where name LIKE '%s'", query, esc);
575 mysql_free_result(result);
577 result = get_result(query);
580 ret = -E_EMPTY_RESULT;
581 num_fields = mysql_field_count(mysql_ptr);
582 num_rows = mysql_num_rows(result);
583 if (!num_fields || !num_rows)
585 ret = print_results(fd, result, top, left, num_rows - 1,
590 mysql_free_result(result);
595 * get attributes by name. If verbose is not 0, this function returns a string
596 * of the form 'att1="0",att2="1"'... which is used in com_cam() for
597 * constructing a mysql update query. Otherwise the space-separated list of all
598 * attributes which are set in the audio file given by name is returned. Never
599 * returns NULL in *NON VERBOSE* mode.
601 static char *get_atts(char *name, int verbose)
603 char *atts = NULL, *buf, *ebn;
604 void *result = NULL, *result2 = NULL;
607 my_ulonglong num_fields, offset = 4; /* skip Lastplayed, Numplayed... */
610 result2 = get_all_attributes();
613 ebn = escaped_basename(name);
616 buf = make_message("select * from data where name='%s'", ebn);
618 result = get_result(buf);
622 num_fields = mysql_num_fields(result);
625 mysql_data_seek(result2, offset);
626 row = mysql_fetch_row(result);
629 for (i = 4; i < num_fields; i++) {
630 int is_set = row[i] && !strcmp(row[i], "1");
631 row2 = mysql_fetch_row(result2);
632 if (!row2 || !row2[0])
634 if (atts && (verbose || is_set))
635 atts = para_strcat(atts, verbose? "," : " ");
636 if (is_set || verbose)
637 atts = para_strcat(atts, row2[0]);
639 atts = para_strcat(atts, is_set? "=\"1\"" : "=\"0\"");
643 mysql_free_result(result2);
645 mysql_free_result(result);
646 if (!atts && !verbose)
647 atts = para_strdup("(none)");
651 /* never returns NULL in verbose mode */
652 static char *get_meta(char *name, int verbose)
656 char *ebn, *q, *ret = NULL;
657 const char *verbose_fmt =
658 "select concat('lastplayed: ', "
659 "(to_days(now()) - to_days(lastplayed)),"
660 "' day(s). numplayed: ', numplayed, "
661 "', pic: ', pic_id) "
662 "from data where name = '%s'";
663 /* is that really needed? */
664 const char *fmt = "select concat('lastplayed=\\'', lastplayed, "
665 "'\\', numplayed=\\'', numplayed, "
666 "'\\', pic_id=\\'', pic_id, '\\'') "
667 "from data where name = '%s'";
669 if (!(ebn = escaped_basename(name)))
671 q = make_message(verbose? verbose_fmt : fmt, ebn);
673 result = get_result(q);
677 row = mysql_fetch_row(result);
680 ret = para_strdup(row[0]);
683 mysql_free_result(result);
685 ret = para_strdup("(not yet played)");
689 static char *get_dir(char *name)
691 char *ret = NULL, *q, *ebn;
695 if (!(ebn = escaped_basename(name)))
697 q = make_message("select dir from dir where name = '%s'", ebn);
699 result = get_result(q);
703 row = mysql_fetch_row(result);
705 ret = para_strdup(row[0]);
706 mysql_free_result(result);
710 /* never returns NULL */
711 static char *get_current_stream(void)
715 void *result = get_result("select def from streams where "
716 "name = 'current_stream'");
720 row = mysql_fetch_row(result);
723 ret = para_strdup(row[0]);
724 mysql_free_result(result);
728 mysql_free_result(result);
729 return para_strdup("(none)");
733 * Read stream definition of stream streamname and construct mysql
734 * query. Return NULL on errors. If streamname is NULL, use current
735 * stream. If that is also NULL, use query that selects everything.
736 * If filename is NULL, query will list everything, otherwise only
737 * the score of given file.
739 static char *get_query(char *streamname, char *filename, int with_path)
741 char *accept_opts = NULL, *deny_opts = NULL, *score = NULL;
742 char *where_clause, *order, *query;
743 char command[255] = ""; /* buffer for sscanf */
747 char *select_clause = NULL;
749 tmp = get_current_stream();
751 tmp = escape_str(streamname);
755 if (!strcmp(tmp, "(none)")) {
758 char *ret, *ebn = escaped_basename(filename);
761 ret = make_message("select to_days(now()) - "
762 "to_days(lastplayed) from data "
763 "where name = '%s'", ebn);
769 "select concat(dir.dir, '/', dir.name) "
770 "from data, dir where dir.name = data.name "
771 "order by data.lastplayed"
774 "select name from data where name is not NULL "
775 "order by lastplayed"
779 query = make_message("select def from streams where name = '%s'",
781 result = get_result(query);
786 row = mysql_fetch_row(result);
792 char *arg, *line = end;
794 if (!(end = strchr(line, '\n')))
798 if (sscanf(line, "%200s%n", command, &n) < 1)
801 if (!strcmp(command, "accept:")) {
802 char *tmp2 = s_a_r_list(mysql_macro_list, arg);
804 accept_opts = para_strcat(
805 accept_opts, " or ");
806 accept_opts = para_strcat(accept_opts, tmp2);
810 if (!strcmp(command, "deny:")) {
811 char *tmp2 = s_a_r_list(mysql_macro_list, arg);
813 deny_opts = para_strcat(deny_opts, " or ");
814 deny_opts = para_strcat(deny_opts, tmp2);
818 if (!score && !strcmp(command, "score:"))
819 score = s_a_r_list(mysql_macro_list, arg);
822 score = s_a_r_list(mysql_macro_list, conf.mysql_default_score_arg);
827 char *ebn = escaped_basename(filename);
830 select_clause = make_message("select %s from data ", score);
832 where_clause = make_message( "where name = '%s' ", ebn);
834 order = para_strdup("");
837 select_clause = para_strdup(with_path?
838 "select concat(dir.dir, '/', dir.name) from data, dir "
839 "where dir.name = data.name "
841 "select name from data where name is not NULL");
842 order = make_message("order by -(%s)", score);
844 if (accept_opts && deny_opts) {
845 where_clause = make_message("and ((%s) and not (%s)) ",
846 accept_opts, deny_opts);
849 if (accept_opts && !deny_opts) {
850 where_clause = make_message("and (%s) ", accept_opts);
853 if (!accept_opts && deny_opts) {
854 where_clause = make_message("and not (%s) ", deny_opts);
857 where_clause = para_strdup("");
859 query = make_message("%s %s %s", select_clause, where_clause, order);
869 mysql_free_result(result);
876 * This is called from server and from some commands. Name must not be NULL
877 * Never returns NULL.
879 static char *get_selector_info(char *name)
881 char *meta, *atts, *info, *dir, *query, *stream;
883 MYSQL_ROW row = NULL;
886 return para_strdup("(none)");
887 stream = get_current_stream();
888 meta = get_meta(name, 1);
889 atts = get_atts(name, 0);
892 query = get_query(stream, name, 0); /* FIXME: pass stream == NULL instead? */
895 result = get_result(query);
898 row = mysql_fetch_row(result);
900 info = make_message("dbinfo1:dir: %s\n"
901 "dbinfo2:stream: %s, %s, score: %s\n"
903 dir? dir : "(not contained in table)",
905 (result && row && row[0])? row[0] : "(no score)",
912 mysql_free_result(result);
916 /* might return NULL */
917 static char *get_current_audio_file(void)
921 name = para_basename(mmd->filename);
926 /* If called as child, mmd_lock must be held */
927 static void update_mmd(char *info)
929 PARA_DEBUG_LOG("%s", "updating shared memory area\n");
930 strncpy(mmd->selector_info, info, MMD_INFO_SIZE - 1);
931 mmd->selector_info[MMD_INFO_SIZE - 1] = '\0';
934 static void refresh_selector_info(void)
936 char *name = get_current_audio_file();
941 info = get_selector_info(name);
949 /* list attributes / print database info */
950 static int com_la_info(int fd, int argc, char *argv[])
952 char *name = NULL, *meta = NULL, *atts = NULL, *dir = NULL;
953 int ret, la = strcmp(argv[0], "info");
956 ret = -E_GET_AUDIO_FILE;
957 if (!(name = get_current_audio_file()))
959 ret = send_va_buffer(fd, "%s\n", name);
964 if (!(name = escaped_basename(argv[1])))
967 meta = get_meta(name, 1);
968 atts = get_atts(name, 0);
971 ret = send_va_buffer(fd, "%s\n", atts);
973 ret = send_va_buffer(fd, "dir: %s\n" "%s\n" "attributes: %s\n",
974 dir? dir : "(not contained in table)", meta, atts);
983 /* list attributes */
984 int com_la(int fd, int argc, char *argv[])
986 return com_la_info(fd, argc, argv);
989 /* print database info */
990 int com_info(int fd, int argc, char *argv[])
992 return com_la_info(fd, argc, argv);
995 static int change_stream(const char *stream)
999 query = make_message("update streams set def='%s' "
1000 "where name = 'current_stream'", stream);
1001 ret = real_query(query);
1006 static int get_pic_id_by_name(char *name)
1009 void *result = NULL;
1013 if (!(ebn = escaped_basename(name)))
1015 q = make_message("select pic_id from data where name = '%s'", ebn);
1017 result = get_result(q);
1021 row = mysql_fetch_row(result);
1025 mysql_free_result(result);
1029 static int remove_entry(const char *name)
1031 char *q, *ebn = escaped_basename(name);
1032 int ret = -E_ESCAPE;
1036 q = make_message("delete from data where name = '%s'", ebn);
1037 real_query(q); /* ignore errors */
1039 q = make_message("delete from dir where name = '%s'", ebn);
1040 real_query(q); /* ignore errors */
1048 static int add_entry(const char *name)
1050 char *q, *dn, *ebn = NULL, *edn = NULL;
1053 if (!name || !*name)
1054 return -E_MYSQL_SYNTAX;
1055 ebn = escaped_basename(name);
1058 ret = -E_MYSQL_SYNTAX;
1059 dn = para_dirname(name);
1063 edn = escape_str(dn);
1067 q = make_message("insert into data (name, pic_id) values "
1068 "('%s', '%s')", ebn, "1");
1069 ret = real_query(q);
1070 // ret = 1; PARA_DEBUG_LOG("q: %s\n", q);
1074 q = make_message("insert into dir (name, dir) values "
1075 "('%s', '%s')", ebn, edn);
1076 // ret = 1; PARA_DEBUG_LOG("q: %s\n", q);
1077 ret = real_query(q);
1088 * remove/add entries
1090 static int com_rm_ne(__a_unused int fd, int argc, char *argv[])
1092 int ne = !strcmp(argv[0], "ne");
1095 return -E_MYSQL_SYNTAX;
1096 for (i = 1; i < argc; i++) {
1097 ret = remove_entry(argv[i]);
1102 ret = add_entry(argv[i]);
1112 int com_rm(int fd, int argc, char *argv[])
1114 return com_rm_ne(fd, argc, argv);
1120 int com_ne(int fd, int argc, char *argv[])
1122 return com_ne(fd, argc, argv);
1128 int com_mv(__a_unused int fd, int argc, char *argv[])
1130 char *q, *dn, *ebn1 = NULL, *ebn2 = NULL, *edn = NULL;
1134 return -E_MYSQL_SYNTAX;
1136 ebn1 = escaped_basename(argv[1]);
1137 ebn2 = escaped_basename(argv[2]);
1138 if (!ebn1 || !ebn2 || !*ebn1 || !*ebn2)
1140 ret = -E_MYSQL_SYNTAX;
1141 if (!strcmp(ebn1, ebn2))
1143 remove_entry(argv[2]); /* no need to escape, ignore error */
1144 q = make_message("update data set name = '%s' where name = '%s'",
1146 ret = real_query(q);
1150 ret = -E_AUDIO_FILE;
1151 if (!mysql_affected_rows(mysql_ptr))
1153 q = make_message("update dir set name = '%s' where name = '%s'",
1155 ret = real_query(q);
1161 dn = para_dirname(argv[2]);
1165 edn = escape_str(dn);
1172 q = make_message("update dir set dir = '%s' where name = '%s'",
1174 ret = real_query(q);
1186 static int com_set(__a_unused int fd, int argc, char *argv[])
1191 const char *field = strcmp(argv[0], "picass")? "numplayed" : "pic_id";
1194 return -E_MYSQL_SYNTAX;
1196 for (i = 2; i < argc; i++) {
1197 ebn = escaped_basename(argv[i]);
1200 q = make_message("update data set %s = %lu "
1201 "where name = '%s'", field, id, ebn);
1203 ret = real_query(q);
1212 * snp: set numplayed
1214 int com_picass(int fd, int argc, char *argv[])
1216 return com_set(fd, argc, argv);
1220 * snp: set numplayed
1222 int com_snp(int fd, int argc, char *argv[])
1224 int ret = com_set(fd, argc, argv);
1226 refresh_selector_info();
1231 * picch: change entry's name in pics table
1233 int com_picch(__a_unused int fd, int argc, char *argv[])
1240 return -E_MYSQL_SYNTAX;
1243 tmp = escape_str(argv[2]);
1246 q = make_message("update pics set name = '%s' where id = %lu", tmp, id);
1248 ret = real_query(q);
1254 * piclist: print list of pics in db
1256 int com_piclist(__a_unused int fd, int argc, __a_unused char *argv[])
1258 void *result = NULL;
1260 unsigned long *length;
1264 return -E_MYSQL_SYNTAX;
1265 result = get_result("select id,name,pic from pics order by id");
1268 while ((row = mysql_fetch_row(result))) {
1269 length = mysql_fetch_lengths(result);
1270 if (!row || !row[0] || !row[1] || !row[2])
1272 ret = send_va_buffer(fd, "%s\t%lu\t%s\n", row[0], length[2], row[1]);
1278 mysql_free_result(result);
1283 * picdel: delete picture from database
1285 int com_picdel(int fd, int argc, char *argv[])
1293 return -E_MYSQL_SYNTAX;
1294 for (i = 1; i < argc; i++) {
1296 q = make_message("delete from pics where id = %lu", id);
1297 ret = real_query(q);
1301 aff = mysql_affected_rows(mysql_ptr);
1303 ret = send_va_buffer(fd, "No such id: %lu\n", id);
1308 q = make_message("update data set pic_id = 1 where pic_id = %lu", id);
1309 ret = real_query(q);
1315 * pic: get picture by name or by number
1317 int com_pic(int fd, int argc, char *argv[])
1319 void *result = NULL;
1321 unsigned long *length, id;
1323 char *q, *name = NULL;
1326 ret = -E_GET_AUDIO_FILE;
1327 name = get_current_audio_file();
1330 name = escaped_basename(argv[1]);
1335 id = atoi(name + 1);
1337 id = get_pic_id_by_name(name);
1341 q = make_message("select pic from pics where id = '%lu'", id);
1342 result = get_result(q);
1346 row = mysql_fetch_row(result);
1348 if (!row || !row[0])
1350 length = mysql_fetch_lengths(result);
1351 ret = send_bin_buffer(fd, row[0], *length);
1353 mysql_free_result(result);
1358 int com_strdel(__a_unused int fd, int argc, char *argv[])
1364 return -E_MYSQL_SYNTAX;
1365 tmp = escape_str(argv[1]);
1368 q = make_message("delete from streams where name='%s'", tmp);
1370 ret = real_query(q);
1378 int com_ls(int fd, int argc, char *argv[])
1383 my_ulonglong num_rows, top = 0, left = 0, right = 0;
1386 return -E_MYSQL_SYNTAX;
1388 char *tmp = escape_str(argv[1]);
1391 q = make_message("select name from data where name like '%s'",
1395 q = para_strdup("select name from data");
1396 result = get_result(q);
1400 num_rows = mysql_num_rows(result);
1403 ret = print_results(fd, result, top, left, num_rows - 1, right);
1404 mysql_free_result(result);
1411 int com_summary(__a_unused int fd, int argc, __a_unused char *argv[])
1416 void *result2 = NULL;
1417 const char *fmt = "select count(name) from data where %s='1'";
1418 int ret = -E_NORESULT;
1421 return -E_MYSQL_SYNTAX;
1422 result = get_all_attributes();
1425 while ((row = mysql_fetch_row(result))) {
1432 buf = make_message(fmt, row[0]);
1433 result2 = get_result(buf);
1438 row2 = mysql_fetch_row(result2);
1439 if (!row2 || !row2[0])
1441 ret = send_va_buffer(fd, "%s\t%s\n", row[0], row2[0]);
1448 mysql_free_result(result2);
1450 mysql_free_result(result);
1454 static int get_numplayed(char *name)
1458 const char *fmt = "select numplayed from data where name = '%s'";
1459 char *buf = make_message(fmt, name);
1460 int ret = -E_NORESULT;
1462 result = get_result(buf);
1467 row = mysql_fetch_row(result);
1468 if (!row || !row[0])
1473 mysql_free_result(result);
1477 static int update_audio_file(char *name)
1480 const char *fmt1 = "update data set lastplayed = now() where name = '%s'";
1481 const char *fmt2 = "update data set numplayed = %i where name = '%s'";
1483 char *ebn = escaped_basename(name);
1488 q = make_message(fmt1, ebn);
1489 ret = real_query(q);
1493 ret = get_numplayed(ebn);
1496 q = make_message(fmt2, ret + 1, ebn);
1497 ret = real_query(q);
1504 static void update_audio_file_server_handler(char *name)
1507 info = get_selector_info(name);
1510 update_audio_file(name);
1513 int com_us(__a_unused int fd, int argc, char *argv[])
1519 return -E_MYSQL_SYNTAX;
1520 tmp = escape_str(argv[1]);
1523 ret = update_audio_file(argv[1]);
1526 refresh_selector_info();
1530 /* select previous / next stream */
1531 static int com_ps_ns(__a_unused int fd, int argc, char *argv[])
1533 char *query, *stream = get_current_stream();
1534 void *result = get_result("select name from streams");
1537 my_ulonglong num_rows, match, i;
1539 ret = -E_MYSQL_SYNTAX;
1545 num_rows = mysql_num_rows(result);
1546 ret = -E_EMPTY_RESULT;
1550 for (i = 0; i < num_rows; i++) {
1551 row = mysql_fetch_row(result);
1552 if (!row || !row[0])
1554 if (!strcmp(row[0], "current_stream"))
1556 if (!strcmp(row[0], stream))
1563 if (!strcmp(argv[0], "ps"))
1564 i = match > 0? match - 1 : num_rows - 1;
1566 i = match < num_rows - 1? match + 1 : 0;
1568 mysql_data_seek(result, i);
1569 row = mysql_fetch_row(result);
1570 if (!row || !row[0])
1572 if (!strcmp(row[0], "current_stream")) {
1573 if (!strcmp(argv[0], "ps")) {
1574 i = match < 2? match + num_rows - 2 : match - 2;
1577 i = i > num_rows - 1? i - num_rows : i;
1579 mysql_data_seek(result, i);
1580 row = mysql_fetch_row(result);
1581 if (!row || !row[0])
1584 query = make_message("update streams set def='%s' where name = "
1585 "'current_stream'", row[0]);
1586 ret = real_query(query);
1588 refresh_selector_info();
1592 mysql_free_result(result);
1596 /* select previous stream */
1597 int com_ps(int fd, int argc, char *argv[])
1599 return com_ps_ns(fd, argc, argv);
1602 /* select next stream */
1603 int com_ns(int fd, int argc, char *argv[])
1605 return com_ps_ns(fd, argc, argv);
1609 int com_streams(int fd, int argc, __a_unused char *argv[])
1611 unsigned int num_rows;
1612 int i, ret = -E_NORESULT;
1616 if (argc > 1 && strcmp(argv[1], "current_stream"))
1617 return -E_MYSQL_SYNTAX;
1619 char *cs = get_current_stream();
1620 ret = send_va_buffer(fd, "%s\n", cs);
1624 result = get_result("select name from streams");
1627 num_rows = mysql_num_rows(result);
1632 for (i = 0; i < num_rows; i++) {
1633 row = mysql_fetch_row(result);
1634 if (!row || !row[0])
1636 if (strcmp(row[0], "current_stream"))
1637 send_va_buffer(fd, "%s\n", row[0]);
1642 mysql_free_result(result);
1646 /* query stream definition */
1647 int com_strq(int fd, int argc, char *argv[])
1655 ret = -E_GET_STREAM;
1656 name = get_current_stream();
1659 name = escaped_basename(argv[1]);
1664 query = make_message("select def from streams where name='%s'", name);
1666 result = get_result(query);
1671 row = mysql_fetch_row(result);
1672 if (!row || !row[0])
1674 /* no '\n' needed */
1675 ret = send_buffer(fd, row[0]);
1678 mysql_free_result(result);
1682 /* change stream / change stream and play */
1683 static int com_cs_csp(int fd, int argc, char *argv[])
1685 int ret, stream_change;
1686 char *query, *stream = NULL;
1687 char *old_stream = get_current_stream();
1688 int csp = !strcmp(argv[0], "csp");
1690 ret = -E_MYSQL_SYNTAX;
1696 ret = send_va_buffer(fd, "%s\n", old_stream);
1700 /* test if stream is valid, no need to escape argv[1] */
1701 query = get_query(argv[1], NULL, 0);
1706 stream = escape_str(argv[1]);
1709 stream_change = strcmp(stream, old_stream);
1710 if (stream_change) {
1711 ret = change_stream(stream);
1714 refresh_selector_info();
1718 mmd->new_vss_status_flags |= VSS_PLAYING;
1720 mmd->new_vss_status_flags |= VSS_NEXT;
1731 int com_cs(int fd, int argc, char *argv[])
1733 return com_cs_csp(fd, argc, argv);
1736 /* change stream and play */
1737 int com_csp(int fd, int argc, char *argv[])
1739 return com_cs_csp(fd, argc, argv);
1742 /* score list / skip */
1743 static int com_sl_skip(int fd, int argc, char *argv[])
1745 void *result = NULL;
1747 int ret, i, skip = !strcmp(argv[0], "skip");
1748 char *query, *stream, *tmp;
1749 unsigned int num_rows, num;
1752 return -E_MYSQL_SYNTAX;
1753 num = atoi(argv[1]);
1755 return -E_MYSQL_SYNTAX;
1757 stream = get_current_stream();
1759 return -E_GET_STREAM;
1761 stream = escape_str(argv[2]);
1765 tmp = get_query(stream, NULL, 0);
1768 return -E_GET_QUERY;
1769 query = make_message("%s limit %d", tmp, num);
1772 result = get_result(query);
1776 ret = -E_EMPTY_RESULT;
1777 num_rows = mysql_num_rows(result);
1780 for (i = 0; i < num_rows && i < num; i++) {
1781 row = mysql_fetch_row(result);
1783 send_va_buffer(fd, "Skipping %s\n", row[0]);
1784 update_audio_file(row[0]);
1786 send_va_buffer(fd, "%s\n", row[0]? row[0]: "BUG");
1791 mysql_free_result(result);
1796 int com_sl(int fd, int argc, char *argv[])
1798 return com_sl_skip(fd, argc, argv);
1802 int com_skip(int fd, int argc, char *argv[])
1804 return com_sl_skip(fd, argc, argv);
1808 * update attributes of name
1810 static int update_atts(int fd, char *name, char *atts)
1813 char *ebn, *q, *old, *new = NULL;
1817 ebn = escaped_basename(name);
1820 q = make_message("update data set %s where name = '%s'", atts, ebn);
1821 old = get_atts(ebn, 0);
1822 send_va_buffer(fd, "old: %s\n", old);
1824 ret = real_query(q);
1828 new = get_atts(ebn, 0);
1829 ret = send_va_buffer(fd, "new: %s\n", new);
1839 int com_sa(int fd, int argc, char *argv[])
1842 char *atts = NULL, *name;
1845 return -E_MYSQL_SYNTAX;
1846 for (i = 1; i < argc; i++) {
1848 char *esc, *tmp, *p =argv[i];
1849 int len = strlen(p);
1853 switch (p[len - 1]) {
1864 esc = escape_str(p);
1867 tmp = make_message("%s%s='%s'", atts? "," : "", esc,
1870 atts = para_strcat(atts, tmp);
1876 if (i >= argc) { /* no name given, use current af */
1877 ret = -E_GET_AUDIO_FILE;
1878 if (!(name = get_current_audio_file()))
1880 ret = update_atts(fd, name, atts);
1884 for (; argv[i] && ret >= 0; i++)
1885 ret = update_atts(fd, argv[i], atts);
1887 refresh_selector_info();
1896 int com_cam(int fd, int argc, char *argv[])
1898 char *name = NULL, *meta = NULL, *atts = NULL;
1902 return -E_MYSQL_SYNTAX;
1903 if (!(name = escaped_basename(argv[1])))
1906 if (!(atts = get_atts(name, 1)))
1909 if (!(meta = get_meta(name, 0)))
1911 for (i = 2; i < argc; i++) {
1914 if (!(ebn = escaped_basename(argv[i])))
1916 ret = send_va_buffer(fd, "updating %s\n", ebn);
1921 q = make_message("update data set %s where name = '%s'",
1923 if ((ret = update_atts(fd, ebn, atts)) >= 0)
1924 ret = real_query(q);
1944 static int com_vrfy_clean(int fd, int argc, __a_unused char *argv[])
1947 int ret, vrfy_mode = strcmp(argv[0], "clean");
1948 void *result = NULL;
1951 my_ulonglong num_rows, top = 0, left = 0, right = 0;
1954 return -E_MYSQL_SYNTAX;
1956 result = get_result("select data.name from data left join dir on "
1957 "dir.name = data.name where dir.name is NULL");
1960 num_rows = mysql_num_rows(result);
1962 ret = send_buffer(fd, "No invalid entries\n");
1966 send_va_buffer(fd, "found %lli invalid entr%s\n", num_rows,
1967 num_rows == 1? "y" : "ies");
1968 ret = print_results(fd, result, top, left, num_rows - 1, right);
1971 while ((row = mysql_fetch_row(result))) {
1976 escaped_name = escape_str(row[0]);
1979 send_va_buffer(fd, "deleting %s\n", escaped_name);
1980 query = make_message("delete from data where name = '%s'",
1982 ret = real_query(query);
1990 mysql_free_result(result);
1997 int com_vrfy(int fd, int argc, char **argv)
1999 return com_vrfy_clean(fd, argc, argv);
2005 int com_clean(int fd, int argc, char **argv)
2007 return com_vrfy_clean(fd, argc, argv);
2010 static FILE *out_file;
2012 static int mysql_write_tmp_file(const char *dir, const char *name)
2014 int ret = -E_TMPFILE;
2015 char *msg = make_message("%s\t%s\n", dir, name);
2016 if (fputs(msg, out_file) != EOF)
2025 int com_upd(int fd, int argc, __a_unused char *argv[])
2027 char *tempname = NULL, *query = NULL;
2028 int ret, out_fd = -1, num = 0;
2029 void *result = NULL;
2030 unsigned int num_rows;
2034 return -E_MYSQL_SYNTAX;
2036 tempname = para_strdup("/tmp/mysql.tmp.XXXXXX");
2037 ret = para_mkstemp(tempname, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
2041 out_file = fdopen(out_fd, "w");
2046 if (find_audio_files(conf.mysql_audio_file_dir_arg, mysql_write_tmp_file) < 0)
2048 num = ftell(out_file);
2050 * we have to make sure the file hit the disk before we call
2055 PARA_DEBUG_LOG("wrote tempfile %s (%d bytes)\n", tempname, num);
2058 if ((ret = real_query("delete from dir")) < 0)
2060 query = make_message("load data infile '%s' ignore into table dir "
2061 "fields terminated by '\t' lines terminated by '\n' "
2062 "(dir, name)", tempname);
2063 ret = real_query(query);
2067 result = get_result("select dir.name from dir left join data on "
2068 "data.name = dir.name where data.name is NULL");
2072 num_rows = mysql_num_rows(result);
2074 ret = send_buffer(fd, "no new entries\n");
2077 while ((row = mysql_fetch_row(result))) {
2082 send_va_buffer(fd, "new entry: %s\n", row[0]);
2083 erow = escape_str(row[0]);
2086 query = make_message("insert into data (name, pic_id) values "
2087 "('%s','%s')", erow, "1");
2089 ret = real_query(query);
2102 mysql_free_result(result);
2106 static char **server_get_audio_file_list(unsigned int num)
2108 char **list = para_malloc((num + 1) * sizeof(char *));
2109 char *tmp, *query, *stream = get_current_stream();
2110 void *result = NULL;
2111 unsigned int num_rows;
2115 tmp = get_query(stream, NULL, 1);
2119 query = make_message("%s limit %d", tmp, num);
2121 result = get_result(query);
2125 num_rows = mysql_num_rows(result);
2128 for (i = 0; i < num_rows && i < num; i++) {
2129 row = mysql_fetch_row(result);
2130 if (!row || !row[0])
2132 list[i] = para_strdup(row[0]);
2145 mysql_free_result(result);
2150 * connect to mysql server, return mysql pointer on success, -E_NOTCONN
2151 * on errors. Called from parent on startup and also from com_cdb().
2153 static int init_mysql_server(void)
2155 char *u = conf.mysql_user_arg? conf.mysql_user_arg : para_logname();
2158 mysql_ptr = mysql_init(NULL);
2160 PARA_CRIT_LOG("%s", "mysql init error\n");
2163 if (conf.mysql_port_arg < 0)
2164 return -E_MYSQL_SYNTAX;
2165 port = conf.mysql_port_arg;
2166 PARA_DEBUG_LOG("connecting: %s@%s:%d\n", u, conf.mysql_host_arg, port);
2167 if (!conf.mysql_user_arg)
2170 * If host is NULL a connection to the local host is assumed,
2171 * If user is NULL, the current user is assumed
2173 if (!(mysql_ptr = mysql_real_connect(mysql_ptr,
2174 conf.mysql_host_arg,
2175 conf.mysql_user_arg,
2176 conf.mysql_passwd_arg,
2177 conf.mysql_database_arg,
2179 PARA_CRIT_LOG("%s", "connect error\n");
2182 PARA_INFO_LOG("%s", "success\n");
2186 /* mmd lock must be held */
2187 static void write_msg2mmd(int success)
2189 sprintf(mmd->selector_info, "dbinfo1:%s\ndbinfo2:mysql-%s\ndbinfo3:\n",
2190 success < 0? PARA_STRERROR(-success) :
2191 "successfully connected to mysql server",
2192 success < 0? "" : mysql_get_server_info(mysql_ptr));
2195 /* create database */
2196 int com_cdb(int fd, int argc, char *argv[])
2202 PARA_INFO_LOG("%s", "closing database\n");
2203 mysql_close(mysql_ptr);
2205 /* dont use any database */
2206 conf.mysql_database_arg = NULL; /* leak? */
2207 ret = -E_MYSQL_INIT;
2208 if (init_mysql_server() < 0 || !mysql_ptr)
2211 conf.mysql_database_arg = para_strdup("paraslash");
2214 conf.mysql_database_arg = escape_str(argv[1]);
2215 if (!conf.mysql_database_arg)
2218 query = make_message("create database %s", conf.mysql_database_arg);
2219 ret = real_query(query);
2223 /* reconnect with database just created */
2224 mysql_close(mysql_ptr);
2225 ret = -E_MYSQL_INIT;
2226 if (init_mysql_server() < 0 || !mysql_ptr)
2232 if (real_query("create table data (name varchar(255) binary not null "
2234 "lastplayed datetime not null default "
2236 "numplayed int not null default 0, "
2237 "pic_id bigint unsigned not null default 1)") < 0)
2239 if (real_query("create table dir (name varchar(255) binary not null "
2240 "primary key, dir varchar(255) default null)") < 0)
2242 if (real_query("create table pics ("
2243 "id bigint(20) unsigned not null primary key "
2245 "name varchar(255) binary not null, "
2246 "pic mediumblob not null)") < 0)
2248 if (real_query("create table streams ("
2249 "name varchar(255) binary not null primary key, "
2250 "def blob not null)") < 0)
2252 if (real_query("insert into streams (name, def) values "
2253 "('current_stream', '(none)')") < 0)
2255 ret = send_va_buffer(fd, "successfully created database %s\n",
2256 conf.mysql_database_arg);
2261 static void shutdown_connection(void)
2266 PARA_NOTICE_LOG("%s", "shutting down mysql connection\n");
2267 mysql_close(mysql_ptr);
2271 ret = mutex_destroy(mysql_lock);
2273 PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
2279 * the init function of the mysql-based audio file selector
2281 * \param db pointer to the struct to initialize
2283 * Check the command line options and initialize all function pointers of \a
2284 * db. Connect to the mysql server and initialize the info string.
2286 * \return This function returns success even if it could not connect
2287 * to the mysql server. This is because the connect is expected to fail
2288 * if there the paraslash database is not yet created. This gives the
2289 * user a chance to send the "cdb" to create the database.
2291 * \sa struct audio_file_selector, misc_meta_data::selector_info,
2294 int mysql_selector_init(struct audio_file_selector *db)
2298 if (!conf.mysql_passwd_given)
2299 return -E_NO_MYSQL_PASSWD;
2300 if (!conf.mysql_audio_file_dir_given)
2301 return -E_NO_AF_DIR;
2303 db->cmd_list = mysql_selector_cmds;
2304 db->get_audio_file_list = server_get_audio_file_list;
2305 db->update_audio_file = update_audio_file_server_handler;
2306 db->shutdown = shutdown_connection;
2311 ret = init_mysql_server();
2313 PARA_WARNING_LOG("%s\n", PARA_STRERROR(-ret));
2315 return 1; /* return success even if connect failed to give the
2316 * user the chance to exec com_cdb