1 files changed, 111 insertions, 0 deletions
diff --git a/nss/nss_files/files-hosts.c b/nss/nss_files/files-hosts.c
new file mode 100644
index 0000000000..dad818c941
--- /dev/null
+++ b/nss/nss_files/files-hosts.c
@@ -0,0 +1,111 @@
+/* Hosts file parser in nss_files module.
+Copyright (C) 1996 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <arpa/nameser.h>
+#include <netdb.h>
+#include <resolv.h>
+
+
+/* Get implementation for some internal functions.  */
+#include "../resolv/mapv4v6addr.h"
+#include "../resolv/mapv4v6hostent.h"
+
+
+#define ENTNAME		hostent
+#define DATAFILE	_PATH_HOSTS
+
+struct hostent_data
+  {
+    unsigned char host_addr[16]; /* IPv4 or IPv6 address.  */
+    char *h_addr_ptrs[2];	/* Points to that and null terminator.  */
+  };
+
+#define TRAILING_LIST_MEMBER		h_aliases
+#define TRAILING_LIST_SEPARATOR_P	isspace
+#include "files-parse.c"
+LINE_PARSER
+({
+  char *addr;
+
+  STRING_FIELD (addr, isspace, 1);
+
+  /* Parse address.  */
+  if ((_res.options & RES_USE_INET6)
+      && inet_pton (AF_INET6, addr, entdata->host_addr) > 0)
+    {
+      result->h_addrtype = AF_INET6;
+      result->h_length = IN6ADDRSZ;
+    }
+  else if (inet_pton (AF_INET, addr, entdata->host_addr) > 0)
+    {
+      if (_res.options & RES_USE_INET6)
+	{
+	  map_v4v6_address ((char *) entdata->host_addr,
+			    (char *) entdata->host_addr);
+	  result->h_addrtype = AF_INET6;
+	  result->h_length = IN6ADDRSZ;
+	}
+      else
+	{
+	  result->h_addrtype = AF_INET;
+	  result->h_length = INADDRSZ;
+	}
+    }
+  else
+    /* Illegal address: ignore line.  */
+    return 0;
+
+  /* Store a pointer to the addressin the expected form.  */
+  entdata->h_addr_ptrs[0] = entdata->host_addr;
+  entdata->h_addr_ptrs[1] = NULL;
+  result->h_addr_list = entdata->h_addr_ptrs;
+
+  /* If we need the host entry in IPv6 form change it now.  */
+  if (_res.options & RES_USE_INET6)
+    {
+      char *bufptr = data->linebuffer;
+      int buflen = (char *) data + datalen - bufptr;
+      map_v4v6_hostent (result, &bufptr, &buflen);
+    }
+
+  STRING_FIELD (result->h_name, isspace, 1);
+})
+
+#include "files-XXX.c"
+
+DB_LOOKUP (hostbyname,
+	   {
+	     char **ap;
+	     if (! strcmp (name, result->h_name))
+	       break;
+	     for (ap = result->h_aliases; *ap; ++ap)
+	       if (! strcmp (name, *ap))
+		 break;
+	     if (*ap)
+	       break;
+	   }, const char *name)
+
+DB_LOOKUP (hostbyaddr,
+	   {
+	     if (result->h_addrtype == type && result->h_length == len &&
+		 ! memcmp (addr, result->h_addr_list[0], len))
+	       break;
+	   }, const char *addr, int len, int type)