X-Git-Url: https://git.decadent.org.uk/gitweb/?p=nfs-utils.git;a=blobdiff_plain;f=utils%2Fstatd%2Fmonitor.c;h=98cbf4a5940ba660bda50aa944f01769b0ee9ea4;hp=3b81bdd4af1a6cc829cc9efc0d6a2c8e5ddd3d11;hb=3419e37500dfd19cb2c246260dbd2bc0ee4704d4;hpb=af93e0306d87bba3f703386fd6390e9bf8e76816

diff --git a/utils/statd/monitor.c b/utils/statd/monitor.c
index 3b81bdd..98cbf4a 100644
--- a/utils/statd/monitor.c
+++ b/utils/statd/monitor.c
@@ -7,7 +7,9 @@
  * NSM for Linux.
  */
 
-#include "config.h"
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
 
 #include <fcntl.h>
 #include <limits.h>
@@ -15,6 +17,7 @@
 #include <string.h>
 #include <unistd.h>
 #include <sys/stat.h>
+#include <errno.h>
 #include <arpa/inet.h>
 #include "misc.h"
 #include "statd.h"
@@ -172,7 +175,7 @@ sm_mon_1_svc(struct mon *argp, struct svc_req *rqstp)
 	sprintf(path, "%s/%s", SM_DIR, mon_name);
 	if ((fd = open(path, O_WRONLY|O_SYNC|O_CREAT, S_IRUSR|S_IWUSR)) < 0) {
 		/* Didn't fly.  We won't monitor. */
-		note(N_ERROR, "creat(%s) failed: %m", path);
+		note(N_ERROR, "creat(%s) failed: %s", path, strerror (errno));
 		nlist_free(NULL, clnt);
 		free(path);
 		goto failure;
@@ -210,9 +213,27 @@ sm_unmon_1_svc(struct mon_id *argp, struct svc_req *rqstp)
 	char		*mon_name = argp->mon_name,
 			*my_name  = argp->my_id.my_name;
 	struct my_id	*id = &argp->my_id;
+#ifdef RESTRICTED_STATD
+	struct in_addr	caller;
+#endif
 
 	result.state = MY_STATE;
 
+#ifdef RESTRICTED_STATD
+	/* 1.	Reject anyone not calling from 127.0.0.1.
+	 *	Ignore the my_name specified by the caller, and
+	 *	use "127.0.0.1" instead.
+	 */
+	caller = svc_getcaller(rqstp->rq_xprt)->sin_addr;
+	if (caller.s_addr != htonl(INADDR_LOOPBACK)) {
+		note(N_WARNING,
+			"Call to statd from non-local host %s",
+			inet_ntoa(caller));
+		goto failure;
+	}
+	my_name = "127.0.0.1";
+#endif
+
 	/* Check if we're monitoring anyone. */
 	if (!(clnt = rtnl)) {
 		note(N_WARNING,
@@ -247,6 +268,9 @@ sm_unmon_1_svc(struct mon_id *argp, struct svc_req *rqstp)
 			clnt = NL_NEXT(clnt);
 	}
 
+#ifdef RESTRICTED_STATD
+ failure:
+#endif
 	note(N_WARNING, "Received erroneous SM_UNMON request from %s for %s",
 		my_name, mon_name);
 	return (&result);
@@ -259,16 +283,33 @@ sm_unmon_all_1_svc(struct my_id *argp, struct svc_req *rqstp)
 	short int       count = 0;
 	static sm_stat  result;
 	notify_list	*clnt;
+	char		*my_name = argp->my_name;
+#ifdef RESTRICTED_STATD
+	struct in_addr	caller;
+
+	/* 1.	Reject anyone not calling from 127.0.0.1.
+	 *	Ignore the my_name specified by the caller, and
+	 *	use "127.0.0.1" instead.
+	 */
+	caller = svc_getcaller(rqstp->rq_xprt)->sin_addr;
+	if (caller.s_addr != htonl(INADDR_LOOPBACK)) {
+		note(N_WARNING,
+			"Call to statd from non-local host %s",
+			inet_ntoa(caller));
+		goto failure;
+	}
+	my_name = "127.0.0.1";
+#endif
 
 	result.state = MY_STATE;
 
 	if (!(clnt = rtnl)) {
 		note(N_WARNING, "Received SM_UNMON_ALL request from %s "
-			"while not monitoring any hosts", argp->my_name);
+			"while not monitoring any hosts", my_name);
 		return (&result);
 	}
 
-	while ((clnt = nlist_gethost(clnt, argp->my_name, 1))) {
+	while ((clnt = nlist_gethost(clnt, my_name, 1))) {
 		if (NL_MY_PROC(clnt) == argp->my_proc &&
 			NL_MY_PROG(clnt) == argp->my_prog &&
 			NL_MY_VERS(clnt) == argp->my_vers) {
@@ -284,7 +325,7 @@ sm_unmon_all_1_svc(struct my_id *argp, struct svc_req *rqstp)
 			mon_name[sizeof (mon_name) - 1] = '\0';
 			temp = NL_NEXT(clnt);
 			/* PRC: do the HA callout: */
-			ha_callout("del-client", mon_name, argp->my_name, -1);
+			ha_callout("del-client", mon_name, my_name, -1);
 			nlist_free(&rtnl, clnt);
 			xunlink(SM_DIR, mon_name, 1);
 			++count;
@@ -295,8 +336,10 @@ sm_unmon_all_1_svc(struct my_id *argp, struct svc_req *rqstp)
 
 	if (!count) {
 		dprintf(N_DEBUG, "SM_UNMON_ALL request from %s with no "
-			"SM_MON requests from it.", argp->my_name);
+			"SM_MON requests from it.", my_name);
 	}
-
+#ifdef RESTRICTED_STATD
+ failure:
+#endif
 	return (&result);
 }