2 Bacula® - The Network Backup Solution
4 Copyright (C) 2000-2007 Free Software Foundation Europe e.V.
6 The main author of Bacula is Kern Sibbald, with contributions from
7 many others, a complete list can be found in the file AUTHORS.
8 This program is Free Software; you can redistribute it and/or
9 modify it under the terms of version two of the GNU General Public
10 License as published by the Free Software Foundation plus additions
11 that are listed in the file LICENSE.
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 Bacula® is a registered trademark of John Walker.
24 The licensor of Bacula is the Free Software Foundation Europe
25 (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
26 Switzerland, email:ftf@fsfeurope.org.
29 * Bacula Catalog Database routines specific to MySQL
30 * These are MySQL specific routines -- hopefully all
31 * other files are generic.
33 * Kern Sibbald, March 2000
39 /* The following is necessary so that we do not include
40 * the dummy external definition of DB.
42 #define __SQL_C /* indicate that this is sql.c */
49 /* -----------------------------------------------------------------------
51 * MySQL dependent defines and subroutines
53 * -----------------------------------------------------------------------
56 /* List of open databases */
57 static BQUEUE db_list = {&db_list, &db_list};
59 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
62 * Retrieve database type
71 * Initialize database data structure. In principal this should
72 * never have errors, or it is really fatal.
75 db_init_database(JCR *jcr, const char *db_name, const char *db_user, const char *db_password,
76 const char *db_address, int db_port, const char *db_socket,
77 int mult_db_connections)
82 Jmsg(jcr, M_FATAL, 0, _("A user name for MySQL must be supplied.\n"));
85 P(mutex); /* lock DB queue */
86 /* Look to see if DB already open */
87 if (!mult_db_connections) {
88 for (mdb=NULL; (mdb=(B_DB *)qnext(&db_list, &mdb->bq)); ) {
89 if (bstrcmp(mdb->db_name, db_name) &&
90 bstrcmp(mdb->db_address, db_address) &&
91 mdb->db_port == db_port) {
92 Dmsg2(100, "DB REopen %d %s\n", mdb->ref_count, db_name);
95 Dmsg3(100, "initdb ref=%d connected=%d db=%p\n", mdb->ref_count,
96 mdb->connected, mdb->db);
97 return mdb; /* already open */
101 Dmsg0(100, "db_open first time\n");
102 mdb = (B_DB *)malloc(sizeof(B_DB));
103 memset(mdb, 0, sizeof(B_DB));
104 mdb->db_name = bstrdup(db_name);
105 mdb->db_user = bstrdup(db_user);
107 mdb->db_password = bstrdup(db_password);
110 mdb->db_address = bstrdup(db_address);
113 mdb->db_socket = bstrdup(db_socket);
115 mdb->db_port = db_port;
116 mdb->have_insert_id = true;
117 mdb->errmsg = get_pool_memory(PM_EMSG); /* get error message buffer */
119 mdb->cmd = get_pool_memory(PM_EMSG); /* get command buffer */
120 mdb->cached_path = get_pool_memory(PM_FNAME);
121 mdb->cached_path_id = 0;
123 mdb->fname = get_pool_memory(PM_FNAME);
124 mdb->path = get_pool_memory(PM_FNAME);
125 mdb->esc_name = get_pool_memory(PM_FNAME);
126 mdb->esc_path = get_pool_memory(PM_FNAME);
127 qinsert(&db_list, &mdb->bq); /* put db in list */
128 Dmsg3(100, "initdb ref=%d connected=%d db=%p\n", mdb->ref_count,
129 mdb->connected, mdb->db);
135 * Now actually open the database. This can generate errors,
136 * which are returned in the errmsg
138 * DO NOT close the database or free(mdb) here !!!!
141 db_open_database(JCR *jcr, B_DB *mdb)
146 if (mdb->connected) {
151 if ((errstat=rwl_init(&mdb->lock)) != 0) {
152 Mmsg1(&mdb->errmsg, _("Unable to initialize DB lock. ERR=%s\n"),
158 /* connect to the database */
159 #ifdef xHAVE_EMBEDDED_MYSQL
160 // mysql_server_init(0, NULL, NULL);
162 mysql_init(&(mdb->mysql));
163 Dmsg0(50, "mysql_init done\n");
164 /* If connection fails, try at 5 sec intervals for 30 seconds. */
165 for (int retry=0; retry < 6; retry++) {
166 mdb->db = mysql_real_connect(
167 &(mdb->mysql), /* db */
168 mdb->db_address, /* default = localhost */
169 mdb->db_user, /* login name */
170 mdb->db_password, /* password */
171 mdb->db_name, /* database name */
172 mdb->db_port, /* default port */
173 mdb->db_socket, /* default = socket */
174 CLIENT_FOUND_ROWS); /* flags */
176 /* If no connect, try once more in case it is a timing problem */
177 if (mdb->db != NULL) {
183 mdb->mysql.reconnect = 1; /* so connection does not timeout */
184 Dmsg0(50, "mysql_real_connect done\n");
185 Dmsg3(50, "db_user=%s db_name=%s db_password=%s\n", mdb->db_user, mdb->db_name,
186 mdb->db_password==NULL?"(NULL)":mdb->db_password);
188 if (mdb->db == NULL) {
189 Mmsg2(&mdb->errmsg, _("Unable to connect to MySQL server.\n"
190 "Database=%s User=%s\n"
191 "MySQL connect failed either server not running or your authorization is incorrect.\n"),
192 mdb->db_name, mdb->db_user);
197 mdb->connected = true;
198 if (!check_tables_version(jcr, mdb)) {
203 #ifdef HAVE_THREAD_SAFE_MYSQL
206 Dmsg3(100, "opendb ref=%d connected=%d db=%p\n", mdb->ref_count,
207 mdb->connected, mdb->db);
214 db_close_database(JCR *jcr, B_DB *mdb)
219 db_end_transaction(jcr, mdb);
221 sql_free_result(mdb);
223 #if defined(HAVE_THREAD_SAFE_MYSQL)
226 Dmsg3(100, "closedb ref=%d connected=%d db=%p\n", mdb->ref_count,
227 mdb->connected, mdb->db);
228 if (mdb->ref_count == 0) {
230 if (mdb->connected && mdb->db) {
231 Dmsg1(100, "close db=%p\n", mdb->db);
232 mysql_close(&(mdb->mysql));
233 #ifdef xHAVE_EMBEDDED_MYSQL
234 // mysql_server_end();
237 rwl_destroy(&mdb->lock);
238 free_pool_memory(mdb->errmsg);
239 free_pool_memory(mdb->cmd);
240 free_pool_memory(mdb->cached_path);
241 free_pool_memory(mdb->fname);
242 free_pool_memory(mdb->path);
243 free_pool_memory(mdb->esc_name);
244 free_pool_memory(mdb->esc_path);
251 if (mdb->db_password) {
252 free(mdb->db_password);
254 if (mdb->db_address) {
255 free(mdb->db_address);
257 if (mdb->db_socket) {
258 free(mdb->db_socket);
266 * Return the next unique index (auto-increment) for
267 * the given table. Return NULL on error.
269 * For MySQL, NULL causes the auto-increment value
272 int db_next_index(JCR *jcr, B_DB *mdb, char *table, char *index)
274 strcpy(index, "NULL");
280 * Escape strings so that MySQL is happy
282 * NOTE! len is the length of the old string. Your new
283 * string must be long enough (max 2*old+1) to hold
284 * the escaped output.
287 db_escape_string(char *snew, char *old, int len)
289 mysql_escape_string(snew, old, len);
293 /* Should use mysql_real_escape_string ! */
294 unsigned long mysql_real_escape_string(MYSQL *mysql, char *to, const char *from, unsigned long length);
346 * Submit a general SQL command (cmd), and for each row returned,
347 * the sqlite_handler is called with the ctx.
349 int db_sql_query(B_DB *mdb, const char *query, DB_RESULT_HANDLER *result_handler, void *ctx)
355 if (sql_query(mdb, query) != 0) {
356 Mmsg(mdb->errmsg, _("Query failed: %s: ERR=%s\n"), query, sql_strerror(mdb));
360 if (result_handler != NULL) {
361 if ((mdb->result = sql_use_result(mdb)) != NULL) {
362 int num_fields = sql_num_fields(mdb);
364 /* We *must* fetch all rows */
365 while ((row = sql_fetch_row(mdb)) != NULL) {
367 /* the result handler returns 1 when it has
368 * seen all the data it wants. However, we
369 * loop to the end of the data.
371 if (result_handler(ctx, num_fields, row)) {
377 sql_free_result(mdb);
385 void my_mysql_free_result(B_DB *mdb)
388 mysql_free_result(mdb->result);
393 char *my_mysql_batch_lock_path_query = "LOCK TABLES Path write, "
398 char *my_mysql_batch_lock_filename_query = "LOCK TABLES Filename write, "
400 " Filename as f write ";
402 char *my_mysql_batch_unlock_tables_query = "UNLOCK TABLES";
404 char *my_mysql_batch_fill_path_query = "INSERT INTO Path (Path) "
405 " SELECT a.Path FROM "
406 " (SELECT DISTINCT Path "
411 " WHERE p.Path = a.Path) ";
413 char *my_mysql_batch_fill_filename_query = "INSERT INTO Filename (Name) "
414 " SELECT a.Name FROM "
415 " (SELECT DISTINCT Name "
419 " FROM Filename AS f "
420 " WHERE f.Name = a.Name) ";
422 #endif /* HAVE_MYSQL */