lib-smtp: server: data command: Dereference command at single place during input...

diff --git a/src/lib-smtp/smtp-server-cmd-data.c b/src/lib-smtp/smtp-server-cmd-data.c
index f37d1471e45a2f774df0e9509a8713c908e499e2..c74a61a3ff02099358516386ebfb909960066f31 100644 (file)
--- a/src/lib-smtp/smtp-server-cmd-data.c
+++ b/src/lib-smtp/smtp-server-cmd-data.c
@@ -247,28 +247,22 @@ static void cmd_data_input_error(struct smtp_server_cmd_ctx *cmd)
        }
 }
 
-static int cmd_data_handle_input(struct smtp_server_cmd_ctx *cmd)
+static int cmd_data_do_handle_input(struct smtp_server_cmd_ctx *cmd)
 {
        struct smtp_server_connection *conn = cmd->conn;
        const struct smtp_server_callbacks *callbacks = conn->callbacks;
        struct smtp_server_command *command = cmd->cmd;
        struct cmd_data_context *data_cmd = command->data;
-       ssize_t ret;
+       int ret;
 
        i_assert(data_cmd != NULL);
 
-       if (!smtp_server_cmd_data_check_size(cmd))
-               return -1;
-
-       /* continue reading from client */
-       smtp_server_command_ref(command);
        i_assert(callbacks != NULL &&
                 callbacks->conn_cmd_data_continue != NULL);
        ret = callbacks->conn_cmd_data_continue(conn->context,
                cmd, conn->state.trans);
        if (ret >= 0) {
                if (!smtp_server_cmd_data_check_size(cmd)) {
-                       smtp_server_command_unref(&command);
                        return -1;
                } else if (!i_stream_have_bytes_left(conn->state.data_input)) {
                        smtp_server_command_debug(cmd,
@@ -291,15 +285,31 @@ static int cmd_data_handle_input(struct smtp_server_cmd_ctx *cmd)
        } else {
                if (conn->state.data_input->stream_errno != 0) {
                        cmd_data_input_error(cmd);
-                       smtp_server_command_unref(&command);
                        return -1;
                }
                /* command is waiting for external event or it failed */
                i_assert(smtp_server_command_is_replied(command));
        }
+       
+       return 1;
+}
+
+static int cmd_data_handle_input(struct smtp_server_cmd_ctx *cmd)
+{
+       struct smtp_server_command *command = cmd->cmd;
+       int ret;
+
+       if (!smtp_server_cmd_data_check_size(cmd))
+               return -1;
+
+       smtp_server_command_ref(command);
+
+       /* continue reading from client */
+       ret = cmd_data_do_handle_input(cmd);
+       
        smtp_server_command_unref(&command);
 
-       return 1;
+       return ret;
 }
 
 static void cmd_data_input(struct smtp_server_cmd_ctx *cmd)