(libc_locked_map_ptr): Add new first parameter, used as class for definition.

	* nscd/nscd-client.h (libc_locked_map_ptr): Add new first
	parameter, used as class for definition.
	* nscd/nscd_getpw_r.c: Adjust for libc_locked_map_ptr change.
	(pw_map_free): Ensure no crash after memory is freed.
	* nscd/nscd_getgr.c: Likewise.  Make map externally visible.
	* nscd/nscd_gethst.c: Likewise.
	* nscd/nscd_getai.c: Use map from nscd_gethost.c.
	* nscd/nscd_initgroups.c: Use map from nscd_getgr.c.

1 files changed, 10 insertions, 0 deletions

diff --git a/nscd/nscd_gethst_r.c b/nscd/nscd_gethst_r.c
index 407be1441f..64d02fedc7 100644
--- a/nscd/nscd_gethst_r.c
+++ b/nscd/nscd_gethst_r.c
@@ -336,6 +336,16 @@ nscd_gethst_r (const char *key, size_t keylen, request_type type,
 	  memcpy (resultbuf->h_aliases[0],
 		  (const char *) addr_list + addr_list_len, total_len);
 
+	  /* Try to detect corrupt databases.  */
+	  if (resultbuf->h_name[hst_resp->h_name_len - 1] != '\0'
+	      || ({for (cnt = 0; cnt < hst_resp->h_aliases_cnt; ++cnt)
+		     if (resultbuf->h_aliases[cnt][aliases_len[cnt] - 1]
+			 != '\0')
+		       break;
+		   cnt < hst_resp->h_aliases_cnt; }))
+	    /* We cannot use the database.  */
+	    goto out_close;
+
 	  retval = 0;
 	  *result = resultbuf;
 	}