return immediately if empty commands are sent

2019-09-20 19:22:47 +02:00 · 2019-09-20 19:22:47 +02:00 · acd0c7156c
parent 2426a037db
commit acd0c7156c
1 changed files with 10 additions and 0 deletions
--- a/src/sharedspice.c
+++ b/src/sharedspice.c
@ -916,6 +916,16 @@ immediately */
 IMPEXP
 int  ngSpice_Command(char* comexec)
 {
+    /* Check if command is reasonable */
+    if (comexec == NULL) {
+        fprintf(stderr, "Warning: Received command NULL, ignored");
+        return 1;
+    }
+    if (*comexec == '\0') {
+        fprintf(stderr, "Warning: Received empty string as command, ignored");
+        return 1;
+    }
+
    if ( ! setjmp(errbufc) ) {

        immediate = FALSE;