2 * sql_unixodbc.c unixODBC rlm_sql driver
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
18 * Copyright 2000,2006 The FreeRADIUS server project
19 * Copyright 2000 Dmitri Ageev <d_ageev@ortcc.ru>
22 #include <freeradius-devel/ident.h>
25 #include <freeradius-devel/radiusd.h>
30 typedef struct rlm_sql_unixodbc_sock {
36 } rlm_sql_unixodbc_sock;
42 /* Forward declarations */
43 static char *sql_error(SQLSOCK *sqlsocket, SQL_CONFIG *config);
44 static int sql_state(long err_handle, SQLSOCK *sqlsocket, SQL_CONFIG *config);
45 static int sql_free_result(SQLSOCK *sqlsocket, SQL_CONFIG *config);
46 static int sql_affected_rows(SQLSOCK *sqlsocket, SQL_CONFIG *config);
47 static int sql_num_fields(SQLSOCK *sqlsocket, SQL_CONFIG *config);
50 /*************************************************************************
52 * Function: sql_init_socket
54 * Purpose: Establish connection to the db
56 *************************************************************************/
57 static int sql_init_socket(SQLSOCK *sqlsocket, SQL_CONFIG *config) {
58 rlm_sql_unixodbc_sock *unixodbc_sock;
61 if (!sqlsocket->conn) {
62 sqlsocket->conn = (rlm_sql_unixodbc_sock *)rad_malloc(sizeof(rlm_sql_unixodbc_sock));
63 if (!sqlsocket->conn) {
67 unixodbc_sock = sqlsocket->conn;
68 memset(unixodbc_sock, 0, sizeof(*unixodbc_sock));
70 /* 1. Allocate environment handle and register version */
71 err_handle = SQLAllocHandle(SQL_HANDLE_ENV,SQL_NULL_HANDLE,&unixodbc_sock->env_handle);
72 if (sql_state(err_handle, sqlsocket, config))
74 radlog(L_ERR, "rlm_sql_unixodbc: Can't allocate environment handle\n");
77 err_handle = SQLSetEnvAttr(unixodbc_sock->env_handle, SQL_ATTR_ODBC_VERSION, (void*)SQL_OV_ODBC3, 0);
78 if (sql_state(err_handle, sqlsocket, config))
80 radlog(L_ERR, "rlm_sql_unixodbc: Can't register ODBC version\n");
81 SQLFreeHandle(SQL_HANDLE_ENV, unixodbc_sock->env_handle);
84 /* 2. Allocate connection handle */
85 err_handle = SQLAllocHandle(SQL_HANDLE_DBC, unixodbc_sock->env_handle, &unixodbc_sock->dbc_handle);
86 if (sql_state(err_handle, sqlsocket, config))
88 radlog(L_ERR, "rlm_sql_unixodbc: Can't allocate connection handle\n");
89 SQLFreeHandle(SQL_HANDLE_ENV, unixodbc_sock->env_handle);
93 /* 3. Connect to the datasource */
94 err_handle = SQLConnect(unixodbc_sock->dbc_handle,
95 (SQLCHAR*) config->sql_server, strlen(config->sql_server),
96 (SQLCHAR*) config->sql_login, strlen(config->sql_login),
97 (SQLCHAR*) config->sql_password, strlen(config->sql_password));
98 if (sql_state(err_handle, sqlsocket, config))
100 radlog(L_ERR, "rlm_sql_unixodbc: Connection failed\n");
101 SQLFreeHandle(SQL_HANDLE_DBC, unixodbc_sock->dbc_handle);
102 SQLFreeHandle(SQL_HANDLE_ENV, unixodbc_sock->env_handle);
106 /* 4. Allocate the statement */
107 err_handle = SQLAllocStmt(unixodbc_sock->dbc_handle, &unixodbc_sock->stmt_handle);
108 if (sql_state(err_handle, sqlsocket, config))
110 radlog(L_ERR, "rlm_sql_unixodbc: Can't allocate the statement\n");
118 /*************************************************************************
120 * Function: sql_destroy_socket
122 * Purpose: Free socket and private connection data
124 *************************************************************************/
125 static int sql_destroy_socket(SQLSOCK *sqlsocket, SQL_CONFIG *config)
127 free(sqlsocket->conn);
128 sqlsocket->conn = NULL;
133 /*************************************************************************
135 * Function: sql_query
137 * Purpose: Issue a non-SELECT query (ie: update/delete/insert) to
140 *************************************************************************/
141 static int sql_query(SQLSOCK *sqlsocket, SQL_CONFIG *config, char *querystr) {
142 rlm_sql_unixodbc_sock *unixodbc_sock = sqlsocket->conn;
146 if (config->sqltrace)
147 radlog(L_DBG, "query: %s", querystr);
149 /* Executing query */
150 err_handle = SQLExecDirect(unixodbc_sock->stmt_handle, (SQLCHAR *)querystr, strlen(querystr));
151 if ((state = sql_state(err_handle, sqlsocket, config))) {
152 if(state == SQL_DOWN)
153 radlog(L_INFO, "rlm_sql_unixodbc: rlm_sql will attempt to reconnect\n");
160 /*************************************************************************
162 * Function: sql_select_query
164 * Purpose: Issue a select query to the database
166 *************************************************************************/
167 static int sql_select_query(SQLSOCK *sqlsocket, SQL_CONFIG *config, char *querystr) {
168 rlm_sql_unixodbc_sock *unixodbc_sock = sqlsocket->conn;
169 SQLINTEGER column, len;
173 /* Only state = 0 means success */
174 if((state = sql_query(sqlsocket, config, querystr)))
177 numfields=sql_num_fields(sqlsocket, config);
181 /* Reserving memory for result */
182 unixodbc_sock->row = (char **) rad_malloc((numfields+1)*sizeof(char *));
183 unixodbc_sock->row[numfields] = NULL;
185 for(column=1; column<=numfields; column++) {
186 SQLColAttributes(unixodbc_sock->stmt_handle,((SQLUSMALLINT) column),SQL_COLUMN_LENGTH,NULL,0,NULL,&len);
187 unixodbc_sock->row[column-1] = (SQLCHAR*)rad_malloc((int)++len);
188 SQLBindCol(unixodbc_sock->stmt_handle, column, SQL_C_CHAR, (SQLCHAR *)unixodbc_sock->row[column-1], len, NULL);
194 /*************************************************************************
196 * Function: sql_store_result
198 * Purpose: database specific store_result function. Returns a result
201 *************************************************************************/
202 static int sql_store_result(SQLSOCK *sqlsocket, SQL_CONFIG *config) {
208 /*************************************************************************
210 * Function: sql_num_fields
212 * Purpose: database specific num_fields function. Returns number
213 * of columns from query
215 *************************************************************************/
216 static int sql_num_fields(SQLSOCK *sqlsocket, SQL_CONFIG *config) {
217 rlm_sql_unixodbc_sock *unixodbc_sock = sqlsocket->conn;
221 err_handle = SQLNumResultCols(unixodbc_sock->stmt_handle,(SQLSMALLINT *)&num_fields);
222 if (sql_state(err_handle, sqlsocket, config))
229 /*************************************************************************
231 * Function: sql_num_rows
233 * Purpose: database specific num_rows. Returns number of rows in
236 *************************************************************************/
237 static int sql_num_rows(SQLSOCK *sqlsocket, SQL_CONFIG *config) {
238 return sql_affected_rows(sqlsocket, config);
242 /*************************************************************************
244 * Function: sql_fetch_row
246 * Purpose: database specific fetch_row. Returns a SQL_ROW struct
247 * with all the data for the query in 'sqlsocket->row'. Returns
248 * 0 on success, -1 on failure, SQL_DOWN if 'database is down'.
250 *************************************************************************/
251 static int sql_fetch_row(SQLSOCK *sqlsocket, SQL_CONFIG *config) {
252 rlm_sql_unixodbc_sock *unixodbc_sock = sqlsocket->conn;
256 sqlsocket->row = NULL;
258 err_handle = SQLFetch(unixodbc_sock->stmt_handle);
259 if(err_handle == SQL_NO_DATA_FOUND)
261 if ((state = sql_state(err_handle, sqlsocket, config))) {
262 if(state == SQL_DOWN)
263 radlog(L_INFO, "rlm_sql_unixodbc: rlm_sql will attempt to reconnect\n");
266 sqlsocket->row = unixodbc_sock->row;
271 /*************************************************************************
273 * Function: sql_finish_select_query
275 * Purpose: End the select query, such as freeing memory or result
277 *************************************************************************/
278 static int sql_finish_select_query(SQLSOCK * sqlsocket, SQL_CONFIG *config) {
279 rlm_sql_unixodbc_sock *unixodbc_sock = sqlsocket->conn;
281 sql_free_result(sqlsocket, config);
282 SQLFreeStmt(unixodbc_sock->stmt_handle, SQL_CLOSE);
286 /*************************************************************************
288 * Function: sql_finish_query
290 * Purpose: End the query, such as freeing memory
292 *************************************************************************/
293 static int sql_finish_query(SQLSOCK *sqlsocket, SQL_CONFIG *config) {
294 rlm_sql_unixodbc_sock *unixodbc_sock = sqlsocket->conn;
296 SQLFreeStmt(unixodbc_sock->stmt_handle, SQL_CLOSE);
300 /*************************************************************************
302 * Function: sql_free_result
304 * Purpose: database specific free_result. Frees memory allocated
307 *************************************************************************/
308 static int sql_free_result(SQLSOCK *sqlsocket, SQL_CONFIG *config) {
309 rlm_sql_unixodbc_sock *unixodbc_sock = sqlsocket->conn;
310 int column, numfileds=sql_num_fields(sqlsocket, config);
312 /* Freeing reserved memory */
313 if(unixodbc_sock->row != NULL) {
314 for(column=0; column<numfileds; column++) {
315 if(unixodbc_sock->row[column] != NULL) {
316 free(unixodbc_sock->row[column]);
317 unixodbc_sock->row[column] = NULL;
320 free(unixodbc_sock->row);
321 unixodbc_sock->row = NULL;
326 /*************************************************************************
328 * Function: sql_close
330 * Purpose: database specific close. Closes an open database
331 * connection and cleans up any open handles.
333 *************************************************************************/
334 static int sql_close(SQLSOCK *sqlsocket, SQL_CONFIG *config) {
335 rlm_sql_unixodbc_sock *unixodbc_sock = sqlsocket->conn;
337 SQLFreeStmt(unixodbc_sock->stmt_handle, SQL_DROP);
338 SQLDisconnect(unixodbc_sock->dbc_handle);
339 SQLFreeConnect(unixodbc_sock->dbc_handle);
340 SQLFreeEnv(unixodbc_sock->env_handle);
345 /*************************************************************************
347 * Function: sql_error
349 * Purpose: database specific error. Returns error associated with
352 *************************************************************************/
353 static char *sql_error(SQLSOCK *sqlsocket, SQL_CONFIG *config) {
356 SQLINTEGER errornum = 0;
357 SQLSMALLINT length = 255;
358 static char result[1024]; /* NOT thread-safe! */
360 rlm_sql_unixodbc_sock *unixodbc_sock = sqlsocket->conn;
362 error[0] = state[0] = '\0';
365 unixodbc_sock->env_handle,
366 unixodbc_sock->dbc_handle,
367 unixodbc_sock->stmt_handle,
374 sprintf(result, "%s %s", state, error);
375 result[sizeof(result) - 1] = '\0'; /* catch idiot thread issues */
379 /*************************************************************************
381 * Function: sql_state
383 * Purpose: Returns 0 for success, SQL_DOWN if the error was
384 * connection related or -1 for other errors
386 *************************************************************************/
387 static int sql_state(long err_handle, SQLSOCK *sqlsocket, SQL_CONFIG *config) {
390 SQLINTEGER errornum = 0;
391 SQLSMALLINT length = 255;
394 rlm_sql_unixodbc_sock *unixodbc_sock = sqlsocket->conn;
396 if(SQL_SUCCEEDED(err_handle))
397 return 0; /* on success, just return 0 */
399 error[0] = state[0] = '\0';
402 unixodbc_sock->env_handle,
403 unixodbc_sock->dbc_handle,
404 unixodbc_sock->stmt_handle,
411 if(state[0] == '0') {
413 case '1': /* SQLSTATE 01 class contains info and warning messages */
414 radlog(L_INFO, "rlm_sql_unixodbc: %s %s\n", state, error);
415 case '0': /* SQLSTATE 00 class means success */
418 case '8': /* SQLSTATE 08 class describes various connection errors */
419 radlog(L_ERR, "rlm_sql_unixodbc: SQL down %s %s\n", state, error);
422 default: /* any other SQLSTATE means error */
423 radlog(L_ERR, "rlm_sql_unixodbc: %s %s\n", state, error);
432 /*************************************************************************
434 * Function: sql_affected_rows
436 * Purpose: Return the number of rows affected by the query (update,
439 *************************************************************************/
440 static int sql_affected_rows(SQLSOCK *sqlsocket, SQL_CONFIG *config) {
441 rlm_sql_unixodbc_sock *unixodbc_sock = sqlsocket->conn;
445 err_handle = SQLRowCount(unixodbc_sock->stmt_handle, (SQLINTEGER *)&affected_rows);
446 if (sql_state(err_handle, sqlsocket, config))
449 return affected_rows;
453 /* Exported to rlm_sql */
454 rlm_sql_module_t rlm_sql_unixodbc = {
468 sql_finish_select_query,