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Michael Brown 37ea181d8b [efi] Ignore path separator characters in virtual filenames 
The virtual filesystem that we provide to expose downloaded images
will erroneously interpret filenames with redundant path separators
such as ".\filename" as an attempt to open the directory, rather than
an attempt to open "filename".

This shows up most obviously when chainloading from one iPXE into
another iPXE, when the inner iPXE may end up attempting to open
".\autoexec.ipxe" from the outer iPXE's virtual filesystem.  (The
erroneously opened file will have a zero length and will therefore be
ignored, but is still confusing.)

Fix by discarding any dot or backslash characters after a potential
initial backslash.  This is very liberal and will accept some
syntactically invalid paths, but this is acceptable since our virtual
filesystem does not implement directories anyway.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
 		2025-03-18 16:21:10 +00:00
.github/workflows [ci] Update action versions to silence GitHub warnings 2024-03-07 23:25:35 +00:00
contrib [crypto] Update cmsdetach to work with python-asn1 version 3.0.0 2025-03-17 11:48:06 +00:00
src [efi] Ignore path separator characters in virtual filenames 2025-03-18 16:21:10 +00:00
COPYING [legal] Update GPLv2 licence text 2015-02-26 17:59:53 +00:00
COPYING.GPLv2 [legal] Update GPLv2 licence text 2015-02-26 17:59:53 +00:00
COPYING.UBDL [legal] Add support for the Unmodified Binary Distribution Licence 2015-03-02 12:07:14 +00:00
README [doc] Re-add README file 2010-05-28 00:03:47 +01:00

README 

iPXE README File

Quick start guide:

   cd src
   make

For any more detailed instructions, see http://ipxe.org