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Gary Ching-Pang Lin f9f81a22dd Fix the broken bootpath
- The file path from DevicePathToStr may use slash as the file
  seperator. Change all slashes to backslashes to avoid the strange
  bootpath.
- Remove the redundant backslashes.
- ImagePath no longer requires the leading backslash.
- Fix a memory leak

Based on the patch from Michal Marek <mmarek@suse.com>
2013-09-26 11:58:01 -04:00
Cryptlib MokManager: support SHA512-based crypt() hash 2013-09-26 11:58:01 -04:00
include Port MokManager to Linux Foundation loader UI code 2013-09-26 11:57:59 -04:00
lib Make EFI_PATH easily resettable from the build command line. 2013-09-26 11:58:01 -04:00
.gitignore Ignore tarballs. 2013-09-26 09:56:32 -04:00
cert.S Fix some pointer casting issues. 2013-06-11 14:59:48 -04:00
console_control.h MokManager needs to disable the graphics console. 2013-09-26 09:56:26 -04:00
COPYRIGHT Add copyright file 2012-07-09 11:03:12 -04:00
crypt_blowfish.c MokManager: support blowfish-based crypt() hash 2013-09-26 11:58:01 -04:00
crypt_blowfish.h MokManager: support blowfish-based crypt() hash 2013-09-26 11:58:01 -04:00
dbx.S Make .vendor_cert get the right flags set. 2013-06-10 17:36:23 -04:00
elf_ia32_efi.lds Move embedded certificates to their own section. 2013-06-10 17:35:33 -04:00
elf_ia64_efi.lds Move embedded certificates to their own section. 2013-06-10 17:35:33 -04:00
elf_x86_64_efi.lds Move embedded certificates to their own section. 2013-06-10 17:35:33 -04:00
fallback.c Fix some minor type errors. 2013-05-15 13:37:15 -04:00
make-certs Sign MokManager with a locally-generated key 2012-11-26 13:43:50 -05:00
Makefile MokManager: support blowfish-based crypt() hash 2013-09-26 11:58:01 -04:00
MokManager.c MokManager: support SHA512-based crypt() hash 2013-09-26 11:58:01 -04:00
MokVars.txt Add documentation of the Mok variables 2012-10-30 16:14:02 -04:00
netboot.c Fix a memory leak 2013-09-24 12:05:51 -04:00
netboot.h Add draft version of Neil's netboot code 2012-10-12 20:14:14 -04:00
PasswordCrypt.c MokManager: support Tradition DES hash 2013-09-26 11:58:01 -04:00
PasswordCrypt.h MokManager: support Tradition DES hash 2013-09-26 11:58:01 -04:00
PeImage.h dos2unix PeImage.h 2012-09-06 12:01:43 -04:00
README Add basic documentation 2012-07-28 00:42:43 -04:00
shim.c Fix the broken bootpath 2013-09-26 11:58:01 -04:00
shim.h Make SHIM_LOCK_GUID a first-class object with a symbol. 2013-09-23 10:40:49 -04:00
signature.h Switch to using db format for MokList and MokNew 2012-10-12 19:55:20 -04:00
TODO Add MokListRT option rom entry. 2013-09-23 13:24:48 -04:00
ucs2.h Add StrCSpn() 2013-04-30 09:46:22 -04:00

shim is a trivial EFI application that, when run, attempts to open and
execute another application. It will initially attempt to do this via the
standard EFI LoadImage() and StartImage() calls. If these fail (because secure
boot is enabled and the binary is not signed with an appropriate key, for
instance) it will then validate the binary against a built-in certificate. If
this succeeds and if the binary or signing key are not blacklisted then shim
will relocate and execute the binary.

shim will also install a protocol which permits the second-stage bootloader
to perform similar binary validation. This protocol has a GUID as described
in the shim.h header file and provides a single entry point. On 64-bit systems
this entry point expects to be called with SysV ABI rather than MSABI, and
so calls to it should not be wrapped.

To use shim, simply place a hex dump of the public certificate in cert.h
and build it with make.