[edk2-libc Patch 1/1] AppPkg\Applications\Python\Python-3.6.8\Lib: uuid.py module port for UEFI environment

["Jayaprakash, N" <n.jayaprakash@intel.com>]

 REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3899

 This is commit contains the UEFI port of uuid.py module. Made necessary
 changes required to uuid.py module to support UEFI environment.
 Porting of this module to UEFI is required for open source tools such
 as Chipsec to function properly.

 Cc: Rebecca Cran <rebecca@nuviainc.com>
 Cc: Michael D Kinney <michael.d.kinney@intel.com>
 Signed-off-by: Jayaprakash N <n.jayaprakash@intel.com>
---
 .../Python/Python-3.6.8/Lib/uuid.py           | 94 ++++++++++---------
 1 file changed, 50 insertions(+), 44 deletions(-)

diff --git a/AppPkg/Applications/Python/Python-3.6.8/Lib/uuid.py b/AppPkg/Applications/Python/Python-3.6.8/Lib/uuid.py
index db8b2ef..84ed0b8 100644
--- a/AppPkg/Applications/Python/Python-3.6.8/Lib/uuid.py
+++ b/AppPkg/Applications/Python/Python-3.6.8/Lib/uuid.py
@@ -471,57 +471,61 @@ def _netbios_getnode():
             continue
         return int.from_bytes(bytes, 'big')
 
+
 # Thanks to Thomas Heller for ctypes and for his help with its use here.
 
 # If ctypes is available, use it to find system routines for UUID generation.
 # XXX This makes the module non-thread-safe!
 _uuid_generate_time = _UuidCreate = None
-try:
-    import ctypes, ctypes.util
-    import sys
-
-    # The uuid_generate_* routines are provided by libuuid on at least
-    # Linux and FreeBSD, and provided by libc on Mac OS X.
-    _libnames = ['uuid']
-    if not sys.platform.startswith('win'):
-        _libnames.append('c')
-    for libname in _libnames:
-        try:
-            lib = ctypes.CDLL(ctypes.util.find_library(libname))
-        except Exception:
-            continue
-        if hasattr(lib, 'uuid_generate_time'):
-            _uuid_generate_time = lib.uuid_generate_time
-            break
-    del _libnames
-
-    # The uuid_generate_* functions are broken on MacOS X 10.5, as noted
-    # in issue #8621 the function generates the same sequence of values
-    # in the parent process and all children created using fork (unless
-    # those children use exec as well).
-    #
-    # Assume that the uuid_generate functions are broken from 10.5 onward,
-    # the test can be adjusted when a later version is fixed.
-    if sys.platform == 'darwin':
-        if int(os.uname().release.split('.')[0]) >= 9:
-            _uuid_generate_time = None
-
-    # On Windows prior to 2000, UuidCreate gives a UUID containing the
-    # hardware address.  On Windows 2000 and later, UuidCreate makes a
-    # random UUID and UuidCreateSequential gives a UUID containing the
-    # hardware address.  These routines are provided by the RPC runtime.
-    # NOTE:  at least on Tim's WinXP Pro SP2 desktop box, while the last
-    # 6 bytes returned by UuidCreateSequential are fixed, they don't appear
-    # to bear any relationship to the MAC address of any network device
-    # on the box.
+if os.name != 'edk2':
+    # This code is not meant to run on UEFI environment
     try:
-        lib = ctypes.windll.rpcrt4
+        import ctypes, ctypes.util
+        import sys
+    
+        # The uuid_generate_* routines are provided by libuuid on at least
+        # Linux and FreeBSD, and provided by libc on Mac OS X.
+        _libnames = ['uuid']
+        if not sys.platform.startswith('win'):
+            _libnames.append('c')
+        for libname in _libnames:
+            try:
+                lib = ctypes.CDLL(ctypes.util.find_library(libname))
+            except Exception:
+                continue
+            if hasattr(lib, 'uuid_generate_time'):
+                _uuid_generate_time = lib.uuid_generate_time
+                break
+        del _libnames
+    
+        # The uuid_generate_* functions are broken on MacOS X 10.5, as noted
+        # in issue #8621 the function generates the same sequence of values
+        # in the parent process and all children created using fork (unless
+        # those children use exec as well).
+        #
+        # Assume that the uuid_generate functions are broken from 10.5 onward,
+        # the test can be adjusted when a later version is fixed.
+        if sys.platform == 'darwin':
+            if int(os.uname().release.split('.')[0]) >= 9:
+                _uuid_generate_time = None
+    
+        # On Windows prior to 2000, UuidCreate gives a UUID containing the
+        # hardware address.  On Windows 2000 and later, UuidCreate makes a
+        # random UUID and UuidCreateSequential gives a UUID containing the
+        # hardware address.  These routines are provided by the RPC runtime.
+        # NOTE:  at least on Tim's WinXP Pro SP2 desktop box, while the last
+        # 6 bytes returned by UuidCreateSequential are fixed, they don't appear
+        # to bear any relationship to the MAC address of any network device
+        # on the box.
+        try:
+            lib = ctypes.windll.rpcrt4
+        except:
+            lib = None
+        _UuidCreate = getattr(lib, 'UuidCreateSequential',
+                              getattr(lib, 'UuidCreate', None))
     except:
-        lib = None
-    _UuidCreate = getattr(lib, 'UuidCreateSequential',
-                          getattr(lib, 'UuidCreate', None))
-except:
-    pass
+        pass
+
 
 def _unixdll_getnode():
     """Get the hardware address on Unix using ctypes."""
@@ -563,6 +567,8 @@ def getnode():
     import sys
     if sys.platform == 'win32':
         getters = _NODE_GETTERS_WIN32
+    elif sys.platform == 'uefi':
+        getters = []
     else:
         getters = _NODE_GETTERS_UNIX
 
-- 
2.32.0.windows.2