console: Don't allow newline/control characters to be typed

1 files changed, 6 insertions, 0 deletions

diff --git a/src/console.c b/src/console.c
index 01b7925..9243e24 100644
--- a/src/console.c
+++ b/src/console.c
@@ -1,6 +1,7 @@
 #include "console.h"
 
 #include <assert.h>
+#include <ctype.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unicode/utext.h>
@@ -104,6 +105,11 @@ void imv_console_input(struct imv_console *console, const char *text)
     return;
   }
 
+  /* Don't allow newlines or control characters. */
+  if (*text == '\n' || iscntrl(*text)) {
+    return;
+  }
+
   /* Increase buffer size if needed */
   if (strlen(text) + strlen(console->buffer) + 1 > console->buffer_len) {
     console->buffer_len *= 2;