X-Git-Url: https://git.decadent.org.uk/gitweb/?p=nfs-utils.git;a=blobdiff_plain;f=utils%2Fmountd%2Fauth.c;h=49567c93158b384a592ebed479a689c733dea593;hp=98c3944767767744091db7954824643b6a73d1bc;hb=9b2a1e5430e9bcca39eddc25464234fd95d50b83;hpb=311607be93bc843e5d170b3e56b7d9d2587b3e1e

diff --git a/utils/mountd/auth.c b/utils/mountd/auth.c
index 98c3944..49567c9 100644
--- a/utils/mountd/auth.c
+++ b/utils/mountd/auth.c
@@ -78,10 +78,19 @@ auth_authenticate_internal(char *what, struct sockaddr_in *caller,
 	}
 	auth_fixpath(path);
 
-	if (!(*hpp = gethostbyaddr((const char *)&addr, sizeof(addr), AF_INET)))
-		*hpp = get_hostent((const char *)&addr, sizeof(addr),
-				   AF_INET);
-	else {
+	/* First try it w/o doing a hostname lookup... */
+	*hpp = get_hostent((const char *)&addr, sizeof(addr), AF_INET);
+	exp = export_find(*hpp, path);
+
+	if (!exp) {
+	    /* Ok, that didn't fly.  Try it with a reverse lookup. */
+	    free (*hpp);
+	    *hpp = gethostbyaddr((const char *)&addr, sizeof(addr),
+				 AF_INET);
+	    if (!(*hpp)) {
+		*error = no_entry;
+		return NULL;
+	    } else {
 		/* must make sure the hostent is authorative. */
 		char **sp;
 		struct hostent *forward = NULL;
@@ -113,12 +122,14 @@ auth_authenticate_internal(char *what, struct sockaddr_in *caller,
 			*hpp = hostent_dup (*hpp);
 			return NULL;
 		}
-	}
+	    }
 
-	if (!(exp = export_find(*hpp, path))) {
+	    if (!(exp = export_find(*hpp, path))) {
 		*error = no_entry;
 		return NULL;
+	    }
 	}
+
 	if (!exp->m_mayexport) {
 		*error = not_exported;
 		return NULL;