X-Git-Url: https://git.decadent.org.uk/gitweb/?p=nfs-utils.git;a=blobdiff_plain;f=utils%2Fstatd%2Fsimu.c;h=7df04d9080abaf406c393a79f6dee7128e6c4b1a;hp=fa4e3a63da246608bd11fd934639c9d2c55aa3cc;hb=9ccfe0fa5a43dfc4453b09e328565a6c8f999fe4;hpb=8b7ad01b14df1e7529b9ba8a1ea17df0d6004ef9

diff --git a/utils/statd/simu.c b/utils/statd/simu.c
index fa4e3a6..7df04d9 100644
--- a/utils/statd/simu.c
+++ b/utils/statd/simu.c
@@ -4,7 +4,13 @@
  * NSM for Linux.
  */
 
-#include "config.h"
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <arpa/inet.h>
+
+#include "rpcmisc.h"
 #include "statd.h"
 #include "notlist.h"
 
@@ -17,13 +23,35 @@ extern void my_svc_exit (void);
 void *
 sm_simu_crash_1_svc (void *argp, struct svc_req *rqstp)
 {
+  struct sockaddr_in *sin = nfs_getrpccaller_in(rqstp->rq_xprt);
   static char *result = NULL;
+  struct in_addr caller;
+
+  xlog(D_CALL, "Received SM_SIMU_CRASH");
+
+  if (sin->sin_family != AF_INET) {
+    xlog_warn("Call to statd from non-AF_INET address");
+    goto failure;
+  }
+
+  caller = sin->sin_addr;
+  if (caller.s_addr != htonl(INADDR_LOOPBACK)) {
+    xlog_warn("Call to statd from non-local host %s",
+      inet_ntoa(caller));
+    goto failure;
+  }
+
+  if (ntohs(sin->sin_port) >= 1024) {
+    xlog_warn("Call to statd-simu-crash from unprivileged port");
+    goto failure;
+  }
 
-  log (L_WARNING, "*** SIMULATING CRASH! ***");
+  xlog_warn("*** SIMULATING CRASH! ***");
   my_svc_exit ();
 
   if (rtnl)
     nlist_kill (&rtnl);
 
+ failure:
   return ((void *)&result);
 }