feature: stats support for --nettrace

1 files changed, 52 insertions, 0 deletions

diff --git a/src/fnettrace/terminal.c b/src/fnettrace/terminal.c
new file mode 100644
index 000000000..0ca307bad
--- /dev/null
+++ b/src/fnettrace/terminal.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2014-2023 Firejail Authors
+ *
+ * This file is part of firejail project
+ *
+ * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+#include "fnettrace.h"
+#include <termios.h>
+
+static struct termios tlocal;   // startup terminal setting
+static struct termios twait;    // no wait on key press
+static int tset = 0;
+
+void terminal_restore(void) {
+        if (tset)
+                tcsetattr(0, TCSANOW, &tlocal);
+}
+
+void terminal_handler(int s) {
+        // Remove unused parameter warning
+        (void)s;
+        terminal_restore();
+        _exit(0);
+}
+
+void terminal_set(void) {
+        if (tset == 0) {
+                tcgetattr(0, &twait);          // get current terminal attributes; 0 is the file descriptor for stdin
+                memcpy(&tlocal, &twait, sizeof(tlocal));
+                twait.c_lflag &= ~ICANON;      // disable canonical mode
+                twait.c_lflag &= ~ECHO; // no echo
+                twait.c_cc[VMIN] = 1;          // wait until at least one keystroke available
+                twait.c_cc[VTIME] = 0;         // no timeout
+                tset = 1;
+        }
+        tcsetattr(0, TCSANOW, &twait);
+}
+
+