Alpha version from Gabriel Blanchard

diff --git a/src/modules/rlm_sql/drivers/rlm_sql_freetds/sql_freetds.c b/src/modules/rlm_sql/drivers/rlm_sql_freetds/sql_freetds.c
new file mode 100644 (file)
index 0000000..fb39b8e
--- /dev/null
+++ b/src/modules/rlm_sql/drivers/rlm_sql_freetds/sql_freetds.c
@@ -0,0 +1,363 @@
+/*
+ *  sql_freetds.c
+ *  freeradius
+ *
+ * Version:    $Id$
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License version 2 only, as published by
+ *   the Free Software Foundation.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License version 2
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * Copyright 2009 Gabriel Blanchard gabe@teksavvy.com
+ */
+
+#include <freeradius-devel/ident.h>
+RCSID("$Id$")
+
+#include <freeradius-devel/radiusd.h>
+
+#include <sybdb.h>
+#include <sybfront.h>
+
+#include <sys/time.h>
+#include <sys/stat.h>
+
+#include "rlm_sql.h"
+
+int query_timeout_handler(void *dbproc);
+int err_handler(UNUSED DBPROCESS *dbproc, UNUSED int severity, UNUSED int dberr, UNUSED int oserr, char *dberrstr, char *oserrstr);
+
+// As defined in tds.h
+#define TDS_INT_CONTINUE 1
+#define TDS_INT_CANCEL 2
+#define TDS_INT_TIMEOUT 3
+
+typedef struct rlm_sql_freetds_sock {
+       DBPROCESS *dbproc;
+} rlm_sql_freetds_sock;
+
+/*
+ * FreeTDS calls this handler when dbsqlexec() or dbsqlok() blocks every seconds
+ * This ensures that FreeTDS doesn't stay stuck on the same query for ever.
+ */
+int query_timeout_handler(void *dbproc) {
+       return TDS_INT_CONTINUE;
+}
+
+int err_handler(UNUSED DBPROCESS *dbproc, UNUSED int severity, UNUSED int dberr, UNUSED int oserr, char *dberrstr, char *oserrstr)
+{      
+               radlog(L_ERR, "rlm_sql_freetds: FreeTDS error: %s\n", dberrstr);
+               radlog(L_ERR, "rlm_sql_freetds: OS error: %s\n", oserrstr);
+}
+       
+/*************************************************************************
+ *
+ *     Function: sql_create_socket
+ *
+ *     Purpose: Establish connection to the db
+ *
+ *************************************************************************/
+static int sql_init_socket(SQLSOCK *sqlsocket, SQL_CONFIG *config)
+{
+       LOGINREC *login;
+       rlm_sql_freetds_sock *freetds_sock;
+       
+       if (!sqlsocket->conn) {
+               sqlsocket->conn = (rlm_sql_freetds_sock *)rad_malloc(sizeof(struct rlm_sql_freetds_sock));
+               if (!sqlsocket->conn) {
+                       return -1;
+               }
+       }
+       
+       if (dbinit() == FAIL) {
+               radlog(L_ERR, "rlm_sql_freetds: Unable to init FreeTDS");
+               return -1;              
+       }
+       
+       dbsetversion(DBVERSION_80);
+       dberrhandle(err_handler);
+       
+       // Timeout so that FreeTDS doesn't wait for ever.
+       dbsetlogintime((unsigned long)config->query_timeout);
+       dbsettime((unsigned long)config->query_timeout);
+       
+       freetds_sock = sqlsocket->conn;
+       memset(freetds_sock, 0, sizeof(*freetds_sock));
+       
+       radlog(L_INFO, "rlm_sql_freetds (%s): Starting connect to FreeTDS/MSSQL server for #%d", config->xlat_name, sqlsocket->id);
+       
+       if (!(login = dblogin())) {
+               radlog(L_ERR, "rlm_sql_freetds (%s): Unable to allocate login record", config->xlat_name);
+               return -1;
+       }
+       
+       DBSETLUSER(login, config->sql_login);
+       DBSETLPWD(login, config->sql_password);
+       
+       if ((freetds_sock->dbproc = dbopen(login, config->sql_server)) == FAIL) {
+               radlog(L_ERR, "rlm_sql_freetds (%s): Unable to connect to FreeTDS/MSSQL server %s@%s", 
+                          config->xlat_name, config->sql_login, config->sql_server);
+               dbloginfree(login);
+               return -1;
+       }
+       
+       dbloginfree(login);
+       
+       if ((dbuse(freetds_sock->dbproc, config->sql_db)) == FAIL) {
+               radlog(L_ERR, "rlm_sql_freetds (%s): Unable to select database on FreeTDS/MSSQL server %s@%s:%s", 
+                          config->xlat_name, config->sql_login, config->sql_server, config->sql_db);
+               return -1;
+       }
+       
+       /* I know this may look strange, but it sets a pointer to
+        the freetds_sock struct so that it can be used within the
+        query_timeout_handler function to be able to timeout properly */
+       dbsetinterrupt(freetds_sock->dbproc, query_timeout_handler, query_timeout_handler);
+       dbsetuserdata(freetds_sock->dbproc, (BYTE *)freetds_sock);
+       
+       return 0;
+}
+
+
+/*************************************************************************
+ *
+ *     Function: sql_destroy_socket
+ *
+ *     Purpose: Free socket and any private connection data
+ *
+ *************************************************************************/
+static int sql_destroy_socket(SQLSOCK *sqlsocket, UNUSED SQL_CONFIG *config)
+{
+       free(sqlsocket->conn);
+       sqlsocket->conn = NULL;
+       
+       return 0;
+}
+
+
+/*************************************************************************
+ *
+ *     Function: sql_query
+ *
+ *     Purpose: Issue a query to the database
+ *
+ *************************************************************************/
+static int sql_query(SQLSOCK *sqlsocket, SQL_CONFIG *config, char *querystr)
+{
+       rlm_sql_freetds_sock *freetds_sock = sqlsocket->conn;
+       
+       if (config->sqltrace)
+               radlog(L_DBG,"rlm_sql_freetds: query:  %s", querystr);
+       
+       if (freetds_sock->dbproc == NULL || DBDEAD(freetds_sock->dbproc)) {
+               radlog(L_ERR, "rlm_sql_freetds (%s): Socket not connected", config->xlat_name);
+               return SQL_DOWN;
+       }
+       
+       if ((dbcmd(freetds_sock->dbproc, querystr)) == FAIL) {
+               radlog(L_ERR, "rlm_sql_freetds (%s): Unable to allocate SQL query", config->xlat_name);
+               return -1;
+       }
+       
+       if ((dbsqlexec(freetds_sock->dbproc)) == FAIL) {
+               radlog(L_ERR, "rlm_sql_freetds (%s): SQL query failed", config->xlat_name);
+               return -1;
+       }
+       
+       return 0;
+}
+
+
+/*************************************************************************
+ *
+ *     Function: sql_select_query
+ *
+ *     Purpose: Issue a select query to the database
+ *
+ *************************************************************************/
+static int sql_select_query(SQLSOCK *sqlsocket, SQL_CONFIG *config, char *querystr)
+{      
+       radlog(L_ERR, "rlm_sql_freetds sql_select_query(): unsupported");
+       return -1;
+}
+
+
+/*************************************************************************
+ *
+ *     Function: sql_store_result
+ *
+ *     Purpose: database specific store_result function. Returns a result
+ *               set for the query.
+ *
+ *************************************************************************/
+static int sql_store_result(UNUSED SQLSOCK *sqlsocket, UNUSED SQL_CONFIG *config)
+{
+       radlog(L_ERR, "rlm_sql_freetds sql_store_result(): unsupported");
+       return -1;
+}
+
+
+/*************************************************************************
+ *
+ *     Function: sql_num_fields
+ *
+ *     Purpose: database specific num_fields function. Returns number
+ *               of columns from query
+ *
+ *************************************************************************/
+static int sql_num_fields(SQLSOCK *sqlsocket, UNUSED SQL_CONFIG *config)
+{
+       rlm_sql_freetds_sock *freetds_sock = sqlsocket->conn;
+       
+       return dbnumcols(freetds_sock->dbproc);
+}
+
+
+/*************************************************************************
+ *
+ *     Function: sql_num_rows
+ *
+ *     Purpose: database specific num_rows. Returns number of rows in
+ *               query
+ *
+ *************************************************************************/
+static int sql_num_rows(UNUSED SQLSOCK *sqlsocket, UNUSED SQL_CONFIG *config)
+{
+       
+       return 0;
+}
+
+/*************************************************************************
+ *
+ *     Function: sql_fetch_row
+ *
+ *     Purpose: database specific fetch_row. Returns a SQL_ROW struct
+ *               with all the data for the query in 'sqlsocket->row'. Returns
+ *              0 on success, -1 on failure, SQL_DOWN if database is down.
+ *
+ *************************************************************************/
+static int sql_fetch_row(UNUSED SQLSOCK *sqlsocket, UNUSED SQL_CONFIG *config)
+{
+       return 0;
+}
+
+
+/*************************************************************************
+ *
+ *     Function: sql_free_result
+ *
+ *     Purpose: database specific free_result. Frees memory allocated
+ *               for a result set
+ *
+ *************************************************************************/
+static int sql_free_result(UNUSED SQLSOCK *sqlsocket, UNUSED SQL_CONFIG *config)
+{
+
+       return 0;
+}
+
+
+/*************************************************************************
+ *
+ *     Function: sql_error
+ *
+ *     Purpose: database specific error. Returns error associated with
+ *               connection
+ *
+ *************************************************************************/
+static const char *sql_error(UNUSED SQLSOCK *sqlsocket, UNUSED SQL_CONFIG *config)
+{
+       return NULL;
+}
+
+
+/*************************************************************************
+ *
+ *     Function: sql_close
+ *
+ *     Purpose: database specific close. Closes an open database
+ *               connection
+ *
+ *************************************************************************/
+static int sql_close(SQLSOCK *sqlsocket, UNUSED SQL_CONFIG *config)
+{
+       rlm_sql_freetds_sock *freetds_sock = sqlsocket->conn;
+       
+       if (freetds_sock && freetds_sock->dbproc){
+               dbclose(freetds_sock->dbproc);
+               freetds_sock->dbproc = NULL;
+       }
+       
+       return 0;
+}
+
+
+/*************************************************************************
+ *
+ *     Function: sql_finish_query
+ *
+ *     Purpose: End the query, such as freeing memory
+ *
+ *************************************************************************/
+static int sql_finish_query(UNUSED SQLSOCK *sqlsocket, UNUSED SQL_CONFIG *config)
+{
+
+       return 0;
+}
+
+
+/*************************************************************************
+ *
+ *     Function: sql_finish_select_query
+ *
+ *     Purpose: End the select query, such as freeing memory or result
+ *
+ *************************************************************************/
+static int sql_finish_select_query(SQLSOCK *sqlsocket, SQL_CONFIG *config)
+{
+       return sql_finish_query(sqlsocket, config);
+}
+
+
+/*************************************************************************
+ *
+ *     Function: sql_affected_rows
+ *
+ *     Purpose: End the select query, such as freeing memory or result
+ *
+ *************************************************************************/
+static int sql_affected_rows(SQLSOCK *sqlsocket, UNUSED SQL_CONFIG *config)
+{
+       rlm_sql_freetds_sock *freetds_sock = sqlsocket->conn;
+       
+       return dbcount(freetds_sock->dbproc);
+}
+
+
+/* Exported to rlm_sql */
+rlm_sql_module_t rlm_sql_freetds = {
+       "rlm_sql_freetds",
+       sql_init_socket,
+       sql_destroy_socket,
+       sql_query,
+       sql_select_query,
+       sql_store_result,
+       sql_num_fields,
+       sql_num_rows,
+       sql_fetch_row,
+       sql_free_result,
+       sql_error,
+       sql_close,
+       sql_finish_query,
+       sql_finish_select_query,
+       sql_affected_rows
+};