ogn-rf: Detect if stdin is a terminal

Fixes #11: Version 0.2.5 crashs with SEGV if invoked by systemd.
glidernet · Feb 10, 2017 · 894dc82 · 894dc82
1 parent 24b72ef
commit 894dc82
Showing 1 changed file with 11 additions and 4 deletions.
diff --git a/ogn-rf.cc b/ogn-rf.cc
@@ -1055,10 +1055,17 @@ int main(int argc, char *argv[])
   GSM.Start();
   RF.Start();
 
-  char Cmd[128];
-  while(!RF.StopReq)
-  { if(fgets(Cmd, 128, stdin)==0) break;
-    UserCommand(Cmd); }
+  if (isatty(fileno(stdin))) {
+    char Cmd[128];
+    while(!RF.StopReq) {
+      if(fgets(Cmd, 128, stdin)==0) break;
+      UserCommand(Cmd);
+    }
+  } else {
+    while(!RF.StopReq) {
+      sleep(1);
+    }
+  }
 
   sleep(4);
   RF.Stop();