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tar/tar-1.29-extract_pathname_bypass.patch

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Index: lib/paxnames.c
===================================================================
--- lib/paxnames.c.orig
+++ lib/paxnames.c
@@ -18,6 +18,7 @@
#include <system.h>
#include <hash.h>
#include <paxlib.h>
+#include <quotearg.h>
/* Hash tables of strings. */
@@ -114,7 +115,15 @@ safer_name_suffix (char const *file_name
for (p = file_name + prefix_len; *p; )
{
if (p[0] == '.' && p[1] == '.' && (ISSLASH (p[2]) || !p[2]))
- prefix_len = p + 2 - file_name;
+ {
+ static char const *const diagnostic[] =
+ {
+ N_("%s: Member name contains '..'"),
+ N_("%s: Hard link target contains '..'")
+ };
+ FATAL_ERROR ((0, 0, _(diagnostic[link_target]),
+ quotearg_colon (file_name)));
+ }
do
{