--- clients/zwrite/zwrite.c	1999-08-12 20:19:42.000000000 -0400
+++ clients/zwrite/zspoof.c	2005-07-30 15:52:48.701366154 -0400
@@ -29,7 +29,7 @@
 #define MAXRECIPS 100
 
 int nrecips, msgarg, verbose, quiet, nodot, cc;
-char *whoami, *inst, *class, *opcode, *realm, *recips[MAXRECIPS];
+char *whoami, *inst, *class, *opcode, *realm, *recips[MAXRECIPS], *sender;
 Z_AuthProc auth;
 void un_tabify();
 
@@ -176,6 +176,11 @@
 	    arg++;
 	    realm = argv[arg];
 	    break;
+	case 'S':
+	    if (arg == argc-1)
+		usage(whoami);
+	    arg++;
+	    sender = argv[arg];
 	case 'C':
 	    cc = 1;
 	    break;
@@ -221,7 +226,7 @@
     notice.z_class = class;
     notice.z_class_inst = inst;
     notice.z_opcode = "PING";
-    notice.z_sender = 0;
+    notice.z_sender = sender;
     notice.z_message_len = 0;
     notice.z_recipient = "";
     if (format)
@@ -453,7 +458,8 @@
     fprintf(stderr,
 	    "Usage: %s [-a] [-o] [-d] [-v] [-q] [-n] [-t] [-u] [-l]\n\
 \t[-c class] [-i inst] [-O opcode] [-f fsname] [-s signature] [-C]\n\
-\t[user ...] [-F format] [-r realm] [-m message]\n", s);
+\t[user ...] [-F format] [-r realm] [-S sender] [-m message]\n", s);
+    fprintf(stderr, "\tzspoof support (-S) added by rwbarton\n");
     fprintf(stderr,"\t-f and -c are mutually exclusive\n\
 \t-f and -i are mutually exclusive\n\
 \trecipients must be specified unless -c or -f specifies a class\n\