1 files changed, 53 insertions, 0 deletions
diff --git a/helper/helper_proto.h b/helper/helper_proto.h
new file mode 100644
index 0000000..b815b52
--- /dev/null
+++ b/helper/helper_proto.h
@@ -0,0 +1,53 @@
+/* Part of mate-screensaver.
+ *
+ * Copyright (c) 2019-2021 Paul Wolneykien <[email protected]>
+ *
+ * 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.
+ */
+
+/* Provides functions for two-way communication between the screensaver
+ * and the helper program. The idea of helper program is to be able to
+ * run mate-screensaver-dialog without any setuid bits.
+ */
+
+#ifndef __HELPER_PROTO_H
+#define __HELPER_PROTO_H
+
+#include "config.h"
+
+#include <stdlib.h>
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+#define HELPER_IO_ERR           -1
+
+#define HELPER_LENGTH_READ_ERR  -2
+#define HELPER_TOO_LONG_ERR     -3
+#define HELPER_MSG_READ_ERR     -4
+#define HELPER_TYPE_READ_ERR    -5
+
+ssize_t read_msg (int fd, char *buf, size_t length);
+int read_prompt (int fd, char *buf, size_t *length);
+
+#define HELPER_LENGTH_WRITE_ERR -6
+#define HELPER_MSG_WRITE_ERR    -7
+#define HELPER_TYPE_WRITE_ERR   -8
+
+ssize_t write_msg (int fd, const void *buf, size_t length);
+int write_prompt (int fd, int msg_type, const void *buf, size_t length);
+
+#endif /* __HELPER_PROTO_H */