(_nss_nis_getnetbyname_r): Convert name to lowercase, add test for big

enough buffer.

diff --git a/nis/nss_nis/nis-network.c b/nis/nss_nis/nis-network.c
index 9d526666f3d20dea040f1e35a644492b5c9276fe..ae6945e50d2c2da1e7bbe3e2e09ef2fcfca565ff 100644 (file)
--- a/nis/nss_nis/nis-network.c
+++ b/nis/nss_nis/nis-network.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+/* Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996.
 
@@ -177,8 +177,26 @@ _nss_nis_getnetbyname_r (const char *name, struct netent *net,
   if (yp_get_default_domain (&domain))
     return NSS_STATUS_UNAVAIL;
 
-  retval = yperr2nss (yp_match (domain, "networks.byname", name,
-                                strlen (name), &result, &len));
+  if (buflen < sizeof *data + 1)
+    {
+      *herrnop = NETDB_INTERNAL;
+      __set_errno(ERANGE);
+      return NSS_STATUS_TRYAGAIN;
+    }
+  else
+    {
+      /* Convert name to lowercase.  */
+      size_t namlen = strlen (name);
+      char name2[namlen + 1];
+      int i;
+
+      for (i = 0; i < namlen; ++i)
+       name2[i] = tolower (name[i]);
+      name2[i] = '\0';
+
+      retval = yperr2nss (yp_match (domain, "networks.byname", name2,
+                                   namlen, &result, &len));
+    }
 
   if (retval != NSS_STATUS_SUCCESS)
     {