$OpenBSD: patch-main_c,v 1.2 2008/02/03 15:06:48 kili Exp $
--- main.c.orig	Tue Mar  6 20:29:05 2007
+++ main.c	Sun May 27 07:45:45 2007
@@ -126,6 +126,24 @@ main(int argc, char **argv)
         i++;
     }
 
+    if (geteuid() == 0) {
+	/* We are root; drop privileges to POLIPO_USER */
+	struct passwd	*pw;
+
+	if ((pw = getpwnam(POLIPO_USER)) == NULL) {
+	    do_log(L_ERROR, "No user %s.\n", POLIPO_USER);
+	    exit(1);
+	}
+
+	if (setgroups(1, &pw->pw_gid) ||
+	    setegid(pw->pw_gid) || setgid(pw->pw_gid) ||
+	    seteuid(pw->pw_uid) || setuid(pw->pw_uid)) {
+	    do_log(L_ERROR, "Can't drop privileges.\n");
+	    exit(1);
+	}
+	endpwent();
+    }
+
     initChunks();
     initLog();
     initObject();