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
10 Copyright (C) 2000, 2001, 2002 Kern Sibbald and John Walker
12 This program is free software; you can redistribute it and/or
13 modify it under the terms of the GNU General Public License as
14 published by the Free Software Foundation; either version 2 of
15 the License, or (at your option) any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 General Public License for more details.
22 You should have received a copy of the GNU General Public
23 License along with this program; if not, write to the Free
24 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
30 /* The following is necessary so that we do not include
31 * the dummy external definition of DB.
33 #define __SQL_C /* indicate that this is sql.c */
40 /* -----------------------------------------------------------------------
42 * MySQL dependent defines and subroutines
44 * -----------------------------------------------------------------------
47 /* List of open databases */
48 static BQUEUE db_list = {&db_list, &db_list};
50 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
53 * Initialize database data structure. In principal this should
54 * never have errors, or it is really fatal.
57 db_init_database(char *db_name, char *db_user, char *db_password)
61 P(mutex); /* lock DB queue */
62 /* Look to see if DB already open */
63 for (mdb=NULL; (mdb=(B_DB *)qnext(&db_list, &mdb->bq)); ) {
64 if (strcmp(mdb->db_name, db_name) == 0) {
65 Dmsg2(100, "DB REopen %d %s\n", mdb->ref_count, db_name);
68 return mdb; /* already open */
71 Dmsg0(100, "db_open first time\n");
72 mdb = (B_DB *) malloc(sizeof(B_DB));
73 memset(mdb, 0, sizeof(B_DB));
74 mdb->db_name = bstrdup(db_name);
75 mdb->db_user = bstrdup(db_user);
76 mdb->db_password = bstrdup(db_password);
77 mdb->have_insert_id = TRUE;
78 mdb->errmsg = (char *) get_pool_memory(PM_EMSG); /* get error message buffer */
80 mdb->cmd = (char *) get_pool_memory(PM_EMSG); /* get command buffer */
82 qinsert(&db_list, &mdb->bq); /* put db in list */
88 * Now actually open the database. This can generate errors,
89 * which are returned in the errmsg
92 db_open_database(B_DB *mdb)
99 mdb->connected = FALSE;
100 if (pthread_mutex_init(&mdb->mutex, NULL) != 0) {
101 Mmsg1(&mdb->errmsg, "Unable to initialize DB mutex. ERR=%s\n", strerror(errno));
106 /* connect to the database */
107 mysql_init(&(mdb->mysql));
108 Dmsg0(50, "mysql_init done\n");
109 mdb->db = mysql_real_connect(
110 &(mdb->mysql), /* db */
111 NULL, /* default = localhost */
112 mdb->db_user, /* login name */
113 mdb->db_password, /* password */
114 mdb->db_name, /* database name */
115 0, /* default port */
116 NULL, /* default = socket */
117 0); /* flags = none */
119 /* If no connect, try once more incase it is a timing problem */
120 if (mdb->db == NULL) {
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 */
132 Dmsg0(50, "mysql_real_connect done\n");
133 Dmsg3(50, "db_user=%s db_name=%s db_password=%s\n", mdb->db_user, mdb->db_name,
134 mdb->db_password==NULL?"(NULL)":mdb->db_password);
136 if (mdb->db == NULL) {
137 Mmsg2(&mdb->errmsg, _("Unable to connect to MySQL server. \n\
138 Database=%s User=%s\n\
139 It is probably not running or your password is incorrect.\n"),
140 mdb->db_name, mdb->db_user);
144 mdb->connected = TRUE;
150 db_close_database(B_DB *mdb)
154 if (mdb->ref_count == 0) {
156 if (mdb->connected && mdb->db) {
159 pthread_mutex_destroy(&mdb->mutex);
160 free_pool_memory(mdb->errmsg);
161 free_pool_memory(mdb->cmd);
168 if (mdb->db_password) {
169 free(mdb->db_password);
177 * Return the next unique index (auto-increment) for
178 * the given table. Return NULL on error.
180 * For MySQL, NULL causes the auto-increment value
183 char *db_next_index(B_DB *mdb, char *table)
191 db_escape_string(char *snew, char *old, int len)
193 mysql_escape_string(snew, old, len);
197 * Submit a general SQL command (cmd), and for each row returned,
198 * the sqlite_handler is called with the ctx.
200 int db_sql_query(B_DB *mdb, char *query, DB_RESULT_HANDLER *result_handler, void *ctx)
205 if (sql_query(mdb, query) != 0) {
206 Mmsg(&mdb->errmsg, _("Query failed: %s: ERR=%s\n"), query, sql_strerror(mdb));
210 if (result_handler != NULL) {
211 if ((mdb->result = sql_store_result(mdb)) != NULL) {
212 int num_fields = sql_num_fields(mdb);
214 while ((row = sql_fetch_row(mdb)) != NULL) {
215 if (result_handler(ctx, num_fields, row))
219 sql_free_result(mdb);
229 list_dashes(B_DB *mdb, DB_LIST_HANDLER *send, void *ctx)
234 sql_field_seek(mdb, 0);
236 for (i = 0; i < sql_num_fields(mdb); i++) {
237 field = sql_fetch_field(mdb);
238 for (j = 0; j < field->max_length + 2; j++)
246 list_result(B_DB *mdb, DB_LIST_HANDLER *send, void *ctx)
250 unsigned int i, col_len;
251 char buf[2000], ewc[30];
253 if (mdb->result == NULL) {
256 /* determine column display widths */
257 sql_field_seek(mdb, 0);
258 for (i = 0; i < sql_num_fields(mdb); i++) {
259 field = sql_fetch_field(mdb);
260 if (IS_NUM(field->type) && field->max_length > 0) { /* fixup for commas */
261 field->max_length += (field->max_length - 1) / 3;
263 col_len = strlen(field->name);
264 if (col_len < field->max_length)
265 col_len = field->max_length;
266 if (col_len < 4 && !IS_NOT_NULL(field->flags))
267 col_len = 4; /* 4 = length of the word "NULL" */
268 field->max_length = col_len; /* reset column info */
271 list_dashes(mdb, send, ctx);
273 sql_field_seek(mdb, 0);
274 for (i = 0; i < sql_num_fields(mdb); i++) {
275 field = sql_fetch_field(mdb);
276 sprintf(buf, " %-*s |", field->max_length, field->name);
280 list_dashes(mdb, send, ctx);
282 while ((row = sql_fetch_row(mdb)) != NULL) {
283 sql_field_seek(mdb, 0);
285 for (i = 0; i < sql_num_fields(mdb); i++) {
286 field = sql_fetch_field(mdb);
287 if (row[i] == NULL) {
288 sprintf(buf, " %-*s |", field->max_length, "NULL");
289 } else if (IS_NUM(field->type)) {
290 sprintf(buf, " %*s |", field->max_length,
291 add_commas(row[i], ewc));
293 sprintf(buf, " %-*s |", field->max_length, row[i]);
299 list_dashes(mdb, send, ctx);
303 #endif /* HAVE_MYSQL */