1 files changed, 271 insertions, 0 deletions
diff --git a/src/modules/rlm_sql/drivers/rlm_sql_db2/rlm_sql_db2.c b/src/modules/rlm_sql/drivers/rlm_sql_db2/rlm_sql_db2.c
new file mode 100644
index 0000000..01d1710
--- /dev/null
+++ b/src/modules/rlm_sql/drivers/rlm_sql_db2/rlm_sql_db2.c
@@ -0,0 +1,271 @@
+/*
+ * sql_db2.c		IBM DB2 rlm_sql driver
+ *
+ * Version:	$Id$
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   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
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ *
+ * Copyright 2000,2006  The FreeRADIUS server project
+ * Copyright 2000  Mike Machado <mike@innercite.com>
+ * Copyright 2000  Alan DeKok <aland@ox.org>
+ * Copyright 2001  Joerg Wendland <wendland@scan-plus.de>
+ */
+
+/*
+ * Modification of rlm_sql_db2 to handle IBM DB2 UDB V7
+ * by Joerg Wendland <wendland@scan-plus.de>
+ */
+
+RCSID("$Id$")
+
+#include <freeradius-devel/radiusd.h>
+#include <freeradius-devel/rad_assert.h>
+
+#include <sys/stat.h>
+
+#include <sqlcli.h>
+
+#include "rlm_sql.h"
+
+typedef struct rlm_sql_conn {
+	SQLHANDLE dbc_handle;
+	SQLHANDLE env_handle;
+	SQLHANDLE stmt;
+} rlm_sql_db2_conn_t;
+
+static int _sql_socket_destructor(rlm_sql_db2_conn_t *conn)
+{
+	DEBUG2("rlm_sql_db2: Socket destructor called, closing socket");
+
+	if (conn->stmt) {
+		SQLFreeHandle(SQL_HANDLE_STMT, conn->stmt);
+		conn->stmt = 0;
+	}
+
+	if (conn->dbc_handle) {
+		SQLDisconnect(conn->dbc_handle);
+		SQLFreeHandle(SQL_HANDLE_DBC, conn->dbc_handle);
+		conn->dbc_handle = 0;
+	}
+
+	if (conn->env_handle) {
+		SQLFreeHandle(SQL_HANDLE_ENV, conn->env_handle);
+		conn->env_handle = 0;
+	}
+
+	return RLM_SQL_OK;
+}
+
+static sql_rcode_t sql_socket_init(rlm_sql_handle_t *handle, rlm_sql_config_t *config)
+{
+	SQLRETURN retval;
+	rlm_sql_db2_conn_t *conn;
+
+	MEM(conn = handle->conn = talloc_zero(handle, rlm_sql_db2_conn_t));
+	talloc_set_destructor(conn, _sql_socket_destructor);
+
+	/* Allocate handles */
+	SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &(conn->env_handle));
+	SQLAllocHandle(SQL_HANDLE_DBC, conn->env_handle, &(conn->dbc_handle));
+
+	/*
+	 *	The db2 API doesn't qualify arguments as const even when they should be.
+	 */
+	{
+		SQLCHAR *server, *login, *password;
+
+		memcpy(&server, &config->sql_server, sizeof(server));
+		memcpy(&login, &config->sql_login, sizeof(login));
+		memcpy(&password, &config->sql_password, sizeof(password));
+
+		retval = SQLConnect(conn->dbc_handle,
+				    server, SQL_NTS,
+				    login,  SQL_NTS,
+				    password, SQL_NTS);
+	}
+
+	if (retval != SQL_SUCCESS) {
+		ERROR("could not connect to DB2 server %s", config->sql_server);
+
+		return RLM_SQL_ERROR;
+	}
+
+	return RLM_SQL_OK;
+}
+
+static sql_rcode_t sql_query(rlm_sql_handle_t *handle, UNUSED rlm_sql_config_t *config, char const *query)
+{
+	SQLRETURN retval;
+	rlm_sql_db2_conn_t *conn;
+
+	conn = handle->conn;
+
+	/* allocate handle for statement */
+	SQLAllocHandle(SQL_HANDLE_STMT, conn->dbc_handle, &(conn->stmt));
+
+	/* execute query */
+	{
+		SQLCHAR *db2_query;
+		memcpy(&db2_query, &query, sizeof(query));
+
+		retval = SQLExecDirect(conn->stmt, db2_query, SQL_NTS);
+		if (retval != SQL_SUCCESS) {
+			SQLFreeHandle(SQL_HANDLE_STMT, conn->stmt);
+			conn->stmt = 0;
+
+			/* XXX Check if retval means we should return RLM_SQL_RECONNECT */
+			ERROR("Could not execute statement \"%s\"", query);
+			return RLM_SQL_ERROR;
+		}
+	}
+
+	return RLM_SQL_OK;
+}
+
+static sql_rcode_t sql_select_query(rlm_sql_handle_t *handle, rlm_sql_config_t *config, char const *query)
+{
+	return sql_query(handle, config, query);
+}
+
+static int sql_num_fields(rlm_sql_handle_t *handle, UNUSED rlm_sql_config_t *config)
+{
+	SQLSMALLINT c;
+	rlm_sql_db2_conn_t *conn;
+
+	conn = handle->conn;
+	SQLNumResultCols(conn->stmt, &c);
+	return c;
+}
+
+static sql_rcode_t sql_fetch_row(rlm_sql_handle_t *handle, rlm_sql_config_t *config)
+{
+	int c, i;
+	SQLINTEGER len, slen;
+	rlm_sql_row_t retval;
+	rlm_sql_db2_conn_t *conn;
+
+	conn = handle->conn;
+
+	c = sql_num_fields(handle, config);
+	retval = (rlm_sql_row_t)rad_malloc(c*sizeof(char*)+1);
+	memset(retval, 0, c*sizeof(char*)+1);
+
+	/* advance cursor */
+	if (SQLFetch(conn->stmt) == SQL_NO_DATA_FOUND) {
+		handle->row = NULL;
+		for (i = 0; i < c; i++) free(retval[i]);
+		free(retval);
+		return RLM_SQL_NO_MORE_ROWS;
+	}
+
+	for (i = 0; i < c; i++) {
+		/* get column length */
+		SQLColAttribute(conn->stmt, i+1, SQL_DESC_DISPLAY_SIZE, NULL, 0, NULL, &len);
+
+		retval[i] = rad_malloc(len+1);
+
+		/* get the actual column */
+		SQLGetData(conn->stmt, i + 1, SQL_C_CHAR, retval[i], len+1, &slen);
+		if(slen == SQL_NULL_DATA) {
+			retval[i][0] = '\0';
+		}
+	}
+
+	handle->row = retval;
+	return RLM_SQL_OK;
+}
+
+static sql_rcode_t sql_free_result(rlm_sql_handle_t *handle, UNUSED rlm_sql_config_t *config)
+{
+	rlm_sql_db2_conn_t *conn;
+	conn = handle->conn;
+
+	if (conn->stmt) {
+		SQLFreeHandle(SQL_HANDLE_STMT, conn->stmt);
+		conn->stmt = 0;
+	}
+
+	return RLM_SQL_OK;
+}
+
+/** Retrieves any errors associated with the connection handle
+ *
+ * @note Caller will free any memory allocated in ctx.
+ *
+ * @param ctx to allocate temporary error buffers in.
+ * @param out Array of sql_log_entrys to fill.
+ * @param outlen Length of out array.
+ * @param handle rlm_sql connection handle.
+ * @param config rlm_sql config.
+ * @return number of errors written to the sql_log_entry array.
+ */
+static size_t sql_error(TALLOC_CTX *ctx, sql_log_entry_t out[], size_t outlen,
+			rlm_sql_handle_t *handle, UNUSED rlm_sql_config_t *config)
+{
+	char			state[6];
+	char			errbuff[1024];
+	SQLINTEGER		err;
+	SQLSMALLINT		rl;
+	rlm_sql_db2_conn_t	*conn = handle->conn;
+
+	rad_assert(conn);
+	rad_assert(outlen > 0);
+
+	errbuff[0] = '\0';
+	SQLGetDiagRec(SQL_HANDLE_STMT, conn->stmt, 1, (SQLCHAR *) state, &err,
+		      (SQLCHAR *) errbuff, sizeof(errbuff), &rl);
+	if (errbuff[0] == '\0') return 0;
+
+	out[0].type = L_ERR;
+	out[0].msg = talloc_asprintf(ctx, "%s: %s", state, errbuff);
+
+	return 1;
+}
+
+static sql_rcode_t sql_finish_query(UNUSED rlm_sql_handle_t *handle, UNUSED rlm_sql_config_t *config)
+{
+	return RLM_SQL_OK;
+}
+
+static sql_rcode_t sql_finish_select_query(rlm_sql_handle_t *handle, rlm_sql_config_t *config)
+{
+	return sql_finish_query(handle, config);
+}
+
+static int sql_affected_rows(rlm_sql_handle_t *handle, UNUSED rlm_sql_config_t *config)
+{
+	SQLINTEGER c;
+	rlm_sql_db2_conn_t *conn = handle->conn;
+
+	SQLRowCount(conn->stmt, &c);
+
+	return c;
+}
+
+/* Exported to rlm_sql */
+extern rlm_sql_module_t rlm_sql_db2;
+rlm_sql_module_t rlm_sql_db2 = {
+	.name				= "rlm_sql_db2",
+	.sql_socket_init		= sql_socket_init,
+	.sql_query			= sql_query,
+	.sql_select_query		= sql_select_query,
+	.sql_num_fields			= sql_num_fields,
+	.sql_affected_rows		= sql_affected_rows,
+	.sql_fetch_row			= sql_fetch_row,
+	.sql_free_result		= sql_free_result,
+	.sql_error			= sql_error,
+	.sql_finish_query		= sql_finish_query,
+	.sql_finish_select_query	= sql_finish_select_query
+};