2 * Bacula Catalog Database routines specific to MySQL
3 * These are MySQL specific routines -- hopefully all
4 * other files are generic.
6 * Kern Sibbald, March 2000
12 Copyright (C) 2000, 2001, 2002 Kern Sibbald and John Walker
14 This program is free software; you can redistribute it and/or
15 modify it under the terms of the GNU General Public License as
16 published by the Free Software Foundation; either version 2 of
17 the License, or (at your option) any later version.
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 General Public License for more details.
24 You should have received a copy of the GNU General Public
25 License along with this program; if not, write to the Free
26 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
32 /* The following is necessary so that we do not include
33 * the dummy external definition of DB.
35 #define __SQL_C /* indicate that this is sql.c */
42 /* -----------------------------------------------------------------------
44 * MySQL dependent defines and subroutines
46 * -----------------------------------------------------------------------
49 /* List of open databases */
50 static BQUEUE db_list = {&db_list, &db_list};
52 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
55 * Initialize database data structure. In principal this should
56 * never have errors, or it is really fatal.
59 db_init_database(void *jcr, char *db_name, char *db_user, char *db_password)
63 P(mutex); /* lock DB queue */
64 /* Look to see if DB already open */
65 for (mdb=NULL; (mdb=(B_DB *)qnext(&db_list, &mdb->bq)); ) {
66 if (strcmp(mdb->db_name, db_name) == 0) {
67 Dmsg2(100, "DB REopen %d %s\n", mdb->ref_count, db_name);
70 return mdb; /* already open */
73 Dmsg0(100, "db_open first time\n");
74 mdb = (B_DB *) malloc(sizeof(B_DB));
75 memset(mdb, 0, sizeof(B_DB));
76 mdb->db_name = bstrdup(db_name);
77 mdb->db_user = bstrdup(db_user);
78 mdb->db_password = bstrdup(db_password);
79 mdb->have_insert_id = TRUE;
80 mdb->errmsg = get_pool_memory(PM_EMSG); /* get error message buffer */
82 mdb->cmd = get_pool_memory(PM_EMSG); /* get command buffer */
83 mdb->cached_path = get_pool_memory(PM_FNAME);
84 mdb->cached_path_id = 0;
86 qinsert(&db_list, &mdb->bq); /* put db in list */
93 * Now actually open the database. This can generate errors,
94 * which are returned in the errmsg
97 db_open_database(B_DB *mdb)
102 if (mdb->connected) {
106 mdb->connected = FALSE;
108 if ((errstat=rwl_init(&mdb->lock)) != 0) {
109 Mmsg1(&mdb->errmsg, _("Unable to initialize DB lock. ERR=%s\n"),
115 /* connect to the database */
116 #ifdef HAVE_EMBEDDED_MYSQL
117 mysql_server_init(0, NULL, NULL);
119 mysql_init(&(mdb->mysql));
120 Dmsg0(50, "mysql_init done\n");
121 mdb->db = mysql_real_connect(
122 &(mdb->mysql), /* db */
123 NULL, /* default = localhost */
124 mdb->db_user, /* login name */
125 mdb->db_password, /* password */
126 mdb->db_name, /* database name */
127 0, /* default port */
128 NULL, /* default = socket */
129 0); /* flags = none */
131 /* If no connect, try once more incase it is a timing problem */
132 if (mdb->db == NULL) {
133 mdb->db = mysql_real_connect(
134 &(mdb->mysql), /* db */
135 NULL, /* default = localhost */
136 mdb->db_user, /* login name */
137 mdb->db_password, /* password */
138 mdb->db_name, /* database name */
139 0, /* default port */
140 NULL, /* default = socket */
141 0); /* flags = none */
144 Dmsg0(50, "mysql_real_connect done\n");
145 Dmsg3(50, "db_user=%s db_name=%s db_password=%s\n", mdb->db_user, mdb->db_name,
146 mdb->db_password==NULL?"(NULL)":mdb->db_password);
148 if (mdb->db == NULL) {
149 Mmsg2(&mdb->errmsg, _("Unable to connect to MySQL server. \n\
150 Database=%s User=%s\n\
151 It is probably not running or your password is incorrect.\n"),
152 mdb->db_name, mdb->db_user);
157 if (!check_tables_version(mdb)) {
162 mdb->connected = TRUE;
168 db_close_database(B_DB *mdb)
172 if (mdb->ref_count == 0) {
174 if (mdb->connected && mdb->db) {
176 #ifdef HAVE_EMBEDDED_MYSQL
180 /* pthread_mutex_destroy(&mdb->mutex); */
181 rwl_destroy(&mdb->lock);
182 free_pool_memory(mdb->errmsg);
183 free_pool_memory(mdb->cmd);
184 free_pool_memory(mdb->cached_path);
191 if (mdb->db_password) {
192 free(mdb->db_password);
200 * Return the next unique index (auto-increment) for
201 * the given table. Return NULL on error.
203 * For MySQL, NULL causes the auto-increment value
206 int db_next_index(B_DB *mdb, char *table, char *index)
208 strcpy(index, "NULL");
215 db_escape_string(char *snew, char *old, int len)
217 mysql_escape_string(snew, old, len);
221 * Submit a general SQL command (cmd), and for each row returned,
222 * the sqlite_handler is called with the ctx.
224 int db_sql_query(B_DB *mdb, char *query, DB_RESULT_HANDLER *result_handler, void *ctx)
229 if (sql_query(mdb, query) != 0) {
230 Mmsg(&mdb->errmsg, _("Query failed: %s: ERR=%s\n"), query, sql_strerror(mdb));
234 if (result_handler != NULL) {
235 if ((mdb->result = sql_store_result(mdb)) != NULL) {
236 int num_fields = sql_num_fields(mdb);
238 while ((row = sql_fetch_row(mdb)) != NULL) {
239 if (result_handler(ctx, num_fields, row))
243 sql_free_result(mdb);
253 list_dashes(B_DB *mdb, DB_LIST_HANDLER *send, void *ctx)
258 sql_field_seek(mdb, 0);
260 for (i = 0; i < sql_num_fields(mdb); i++) {
261 field = sql_fetch_field(mdb);
262 for (j = 0; j < field->max_length + 2; j++)
270 list_result(B_DB *mdb, DB_LIST_HANDLER *send, void *ctx)
274 unsigned int i, col_len;
275 char buf[2000], ewc[30];
277 if (mdb->result == NULL) {
278 send(ctx, _("No results to list.\n"));
281 /* determine column display widths */
282 sql_field_seek(mdb, 0);
283 for (i = 0; i < sql_num_fields(mdb); i++) {
284 field = sql_fetch_field(mdb);
285 if (IS_NUM(field->type) && field->max_length > 0) { /* fixup for commas */
286 field->max_length += (field->max_length - 1) / 3;
288 col_len = strlen(field->name);
289 if (col_len < field->max_length)
290 col_len = field->max_length;
291 if (col_len < 4 && !IS_NOT_NULL(field->flags))
292 col_len = 4; /* 4 = length of the word "NULL" */
293 field->max_length = col_len; /* reset column info */
296 list_dashes(mdb, send, ctx);
298 sql_field_seek(mdb, 0);
299 for (i = 0; i < sql_num_fields(mdb); i++) {
300 field = sql_fetch_field(mdb);
301 sprintf(buf, " %-*s |", (int)field->max_length, field->name);
305 list_dashes(mdb, send, ctx);
307 while ((row = sql_fetch_row(mdb)) != NULL) {
308 sql_field_seek(mdb, 0);
310 for (i = 0; i < sql_num_fields(mdb); i++) {
311 field = sql_fetch_field(mdb);
312 if (row[i] == NULL) {
313 sprintf(buf, " %-*s |", (int)field->max_length, "NULL");
314 } else if (IS_NUM(field->type)) {
315 sprintf(buf, " %*s |", (int)field->max_length,
316 add_commas(row[i], ewc));
318 sprintf(buf, " %-*s |", (int)field->max_length, row[i]);
324 list_dashes(mdb, send, ctx);
328 #endif /* HAVE_MYSQL */