adding zephyr-im master branch

lib/ZGetWGPort.c

@@ -0,0 +1,41 @@
+/* This file is part of the Project Athena Zephyr Notification System.
+ * It contains source for the ZGetWGPort function.
+ *
+ *	Created by:	Robert French
+ *
+ *	$Id$
+ *
+ *	Copyright (c) 1987 by the Massachusetts Institute of Technology.
+ *	For copying and distribution information, see the file
+ *	"mit-copyright.h". 
+ */
+
+#ifndef lint
+static const char rcsid_ZGetWGPort_c[] = "$Id$";
+#endif
+
+#include <internal.h>
+
+int
+ZGetWGPort(void)
+{
+    char *envptr, name[128];
+    FILE *fp;
+    int wgport;
+	
+    envptr = getenv("WGFILE");
+    if (!envptr) {
+	(void) sprintf(name, "/tmp/wg.%d", getuid());
+	envptr = name;
+    } 
+    if (!(fp = fopen(envptr, "r")))
+	return (-1);
+
+    /* if fscanf fails, return -1 via wgport */
+    if (fscanf(fp, "%d", &wgport) != 1)
+	    wgport = -1;
+
+    (void) fclose(fp);
+
+    return (wgport);
+}