--- server/main.c.orig	Wed Nov 27 01:26:42 1996
+++ server/main.c	Mon Nov 19 20:49:24 2001
@@ -57,6 +57,7 @@
 #include <errno.h>
 #include <sys/types.h>
 #include <signal.h>
+#include <pwd.h>
 	
 #include "IR.h"
 #include "net.h"
@@ -82,6 +83,8 @@
 #ifdef USE_UNIX_SOCKET
     extern struct sockaddr_un unsock;
 #endif
+    struct passwd *pw;
+    uid_t binuid;
 
     /* Фҥץ(ǡ)ȤƵư */
     parentid = BecomeDaemon(argc, argv);
@@ -114,9 +117,21 @@
       exit(2);
     }
 
+    if ( (pw = getpwnam(cannaOwner)) == NULL ) {
+      fprintf(stderr, "User %s unknown\n", cannaOwner);
+      exit(1);
+    }
+
     /* 顼ϤڤؤTTYڤΥ */
     if (parentid) kill(parentid, SIGTERM);
     DetachTTY();
+
+    /* Drop root privilege. */
+    binuid = pw->pw_uid;
+    if ( setuid(binuid) < 0 ) {
+      fprintf(stderr, "Unable to setuid to %s(UID: %s).\n", cannaOwner, binuid);
+      exit(1);
+    }
 
     /* ǥѥå롼 */
     Dispatch() ;
