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vcpkg/ports/python3/0006-restore-support-for-windows-7.patch

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From e30a560527d17ae81685dd11d3268bc982af2048 Mon Sep 17 00:00:00 2001
From: Adam Johnson <AdamJohnso@gmail.com>
Date: Tue, 16 Feb 2021 18:03:07 -0500
Subject: [PATCH 7/7] restore support for windows 7
this backports the windows 7 compatible fix for bpo-39401 from gh-18234,
originally authored by Steve Dower, and removes explicit dependencies on
pathcch.
The same mechanism is applied to fix posixmodule.c
---
index 25ddc82..ff51042 100644
--- a/Modules/_winapi.c
+++ b/Modules/_winapi.c
@@ -44,6 +44,15 @@
#include "pycore_runtime.h" // _Py_ID
+// The Windws 7 patch lowers the API version such that these constants
+// are no longer defined by the Windows SDK. Debounce that.
+#ifndef LCMAP_SORTHANDLE
+# define LCMAP_SORTHANDLE 0x20000000
+#endif
+#ifndef LCMAP_HASH
+# define LCMAP_HASH 0x00040000
+#endif
+
#if defined(MS_WIN32) && !defined(MS_WIN64)
#define HANDLE_TO_PYNUM(handle) \
PyLong_FromUnsignedLong((unsigned long) handle)
diff --git a/Modules/getpath.c b/Modules/getpath.c
index bc730fc..7d3d559 100644
--- a/Modules/getpath.c
+++ b/Modules/getpath.c
@@ -11,7 +11,7 @@
#ifdef MS_WINDOWS
# include <windows.h> // GetFullPathNameW(), MAX_PATH
-# include <pathcch.h>
+# include <Shlwapi.h>
#endif
#ifdef __APPLE__
@@ -217,6 +217,11 @@ getpath_isfile(PyObject *Py_UNUSED(self), PyObject *args)
return r;
}
+#ifdef MS_WINDOWS
+static int _PathCchFindExtension_Initialized = 0;
+typedef HRESULT (__stdcall *PPathCchFindExtension) (PCWSTR pszPath, size_t cchPath, PCWSTR *ppszExt);
+static PPathCchFindExtension _PathCchFindExtension;
+#endif
static PyObject *
getpath_isxfile(PyObject *Py_UNUSED(self), PyObject *args)
@@ -231,13 +235,51 @@ getpath_isxfile(PyObject *Py_UNUSED(self), PyObject *args)
path = PyUnicode_AsWideCharString(pathobj, &cchPath);
if (path) {
#ifdef MS_WINDOWS
+
+ if (_PathCchFindExtension_Initialized == 0) {
+ HMODULE pathapi = LoadLibraryExW(L"api-ms-win-core-path-l1-1-0.dll", NULL,
+ LOAD_LIBRARY_SEARCH_SYSTEM32);
+
+ if (pathapi) {
+ _PathCchFindExtension = (PPathCchFindExtension)GetProcAddress(pathapi, "PathCchFindExtension");
+ } else {
+ _PathCchFindExtension = NULL;
+ }
+
+ _PathCchFindExtension_Initialized = 1;
+ }
+
const wchar_t *ext;
DWORD attr = GetFileAttributesW(path);
- r = (attr != INVALID_FILE_ATTRIBUTES) &&
- !(attr & FILE_ATTRIBUTE_DIRECTORY) &&
- SUCCEEDED(PathCchFindExtension(path, cchPath + 1, &ext)) &&
- (CompareStringOrdinal(ext, -1, L".exe", -1, 1 /* ignore case */) == CSTR_EQUAL)
- ? Py_True : Py_False;
+ if (attr == INVALID_FILE_ATTRIBUTES || (attr & FILE_ATTRIBUTE_DIRECTORY)) {
+ r = Py_False;
+ }
+ else {
+ HRESULT hr = S_OK;
+ if (_PathCchFindExtension) {
+ hr = _PathCchFindExtension(path, cchPath + 1, &ext);
+ }
+ else {
+ if (cchPath > MAX_PATH) {
+ hr = E_FAIL;
+ }
+ else {
+ ext = PathFindExtensionW(path);
+ if (*ext == '\0')
+ hr = E_FAIL;
+ }
+ }
+
+ if (!SUCCEEDED(hr)) {
+ r = Py_False;
+ }
+ else if (CompareStringOrdinal(ext, -1, L".exe", -1, 1 /* ignore case */) != CSTR_EQUAL) {
+ r = Py_False;
+ }
+ else {
+ r = Py_True;
+ }
+ }
#else
struct stat st;
r = (_Py_wstat(path, &st) == 0) &&
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -15,7 +15,7 @@
// whereas pycore_condvar.h defines the WIN32_LEAN_AND_MEAN macro.
#ifdef MS_WINDOWS
# include <windows.h>
-# include <pathcch.h>
+# include <Shlwapi.h>
# include <lmcons.h> // UNLEN
# include "osdefs.h" // SEP
# define HAVE_SYMLINK
@@ -4471,6 +4471,11 @@ os__getvolumepathname_impl(PyObject *module, path_t *path)
return result;
}
+#ifdef MS_WINDOWS
+static int _PathCchSkipRoot_Initialized = 0;
+typedef HRESULT (__stdcall *PPathCchSkipRoot) (PCWSTR pszPath, PCWSTR *ppszRootEnd);
+static PPathCchSkipRoot _PathCchSkipRoot;
+#endif
/*[clinic input]
os._path_splitroot
@@ -4489,6 +4493,19 @@ os__path_splitroot_impl(PyObject *module, path_t *path)
PyObject *result = NULL;
HRESULT ret;
+ if (_PathCchSkipRoot_Initialized == 0) {
+ HMODULE pathapi = LoadLibraryExW(L"api-ms-win-core-path-l1-1-0.dll", NULL,
+ LOAD_LIBRARY_SEARCH_SYSTEM32);
+
+ if (pathapi) {
+ _PathCchSkipRoot = (PPathCchSkipRoot)GetProcAddress(pathapi, "PathCchSkipRoot");
+ } else {
+ _PathCchSkipRoot = NULL;
+ }
+
+ _PathCchSkipRoot_Initialized = 1;
+ }
+
buffer = (wchar_t*)PyMem_Malloc(sizeof(wchar_t) * (wcslen(path->wide) + 1));
if (!buffer) {
return NULL;
@@ -4499,7 +4516,14 @@ os__path_splitroot_impl(PyObject *module, path_t *path)
}
Py_BEGIN_ALLOW_THREADS
- ret = PathCchSkipRoot(buffer, &end);
+ if (_PathCchSkipRoot) {
+ ret = _PathCchSkipRoot(buffer, &end);
+ } else {
+ end = PathSkipRootW(buffer);
+ if (!end) {
+ ret = E_FAIL;
+ }
+ }
Py_END_ALLOW_THREADS
if (FAILED(ret)) {
result = Py_BuildValue("sO", "", path->object);
diff --git a/PC/pyconfig.h b/PC/pyconfig.h
index d7d3cf0..6e9c090 100644
--- a/PC/pyconfig.h
+++ b/PC/pyconfig.h
@@ -130,8 +130,8 @@ WIN32 is still required for the locale module.
/* set the version macros for the windows headers */
/* Python 3.9+ requires Windows 8 or greater */
-#define Py_WINVER 0x0602 /* _WIN32_WINNT_WIN8 */
-#define Py_NTDDI NTDDI_WIN8
+#define Py_WINVER 0x0601 /* _WIN32_WINNT_WIN7 */
+#define Py_NTDDI NTDDI_WIN7
/* We only set these values when building Python - we don't want to force
these values on extensions, as that will affect the prototypes and
diff --git a/PCbuild/_freeze_module.vcxproj b/PCbuild/_freeze_module.vcxproj
index 442e343..ef0a43e 100644
--- a/PCbuild/_freeze_module.vcxproj
+++ b/PCbuild/_freeze_module.vcxproj
@@ -94,7 +94,7 @@
</ClCompile>
<Link>
<SubSystem>Console</SubSystem>
- <AdditionalDependencies>version.lib;ws2_32.lib;pathcch.lib;bcrypt.lib;%(AdditionalDependencies)</AdditionalDependencies>
+ <AdditionalDependencies>version.lib;ws2_32.lib;shlwapi.lib;bcrypt.lib;%(AdditionalDependencies)</AdditionalDependencies>
<LinkTimeCodeGeneration>Default</LinkTimeCodeGeneration>
</Link>
</ItemDefinitionGroup>
diff --git a/PCbuild/pythoncore.vcxproj b/PCbuild/pythoncore.vcxproj
index c39ba3e1a9..0ef3a05fb6 100644
--- a/PCbuild/pythoncore.vcxproj
+++ b/PCbuild/pythoncore.vcxproj
@@ -106,7 +106,7 @@
<PreprocessorDefinitions Condition="$(IncludeExternals)">_Py_HAVE_ZLIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
</ClCompile>
<Link>
- <AdditionalDependencies>version.lib;ws2_32.lib;pathcch.lib;bcrypt.lib;%(AdditionalDependencies)</AdditionalDependencies>
+ <AdditionalDependencies>version.lib;ws2_32.lib;shlwapi.lib;bcrypt.lib;%(AdditionalDependencies)</AdditionalDependencies>
</Link>
</ItemDefinitionGroup>
<ItemGroup>
diff --git a/Python/fileutils.c b/Python/fileutils.c
index c86ed40..6b1535d 100644
--- a/Python/fileutils.c
+++ b/Python/fileutils.c
@@ -8,7 +8,7 @@
#ifdef MS_WINDOWS
# include <malloc.h>
# include <windows.h>
-# include <pathcch.h> // PathCchCombineEx
+# include <Shlwapi.h>
extern int winerror_to_errno(int);
#endif
@@ -1999,13 +1999,46 @@ _Py_wrealpath(const wchar_t *path,
}
#endif
+#ifdef MS_WINDOWS
+static int _PathCchSkipRoot_Initialized = 0;
+typedef HRESULT (__stdcall *PPathCchSkipRoot) (PCWSTR pszPath, PCWSTR *ppszRootEnd);
+static PPathCchSkipRoot _PathCchSkipRoot;
+
+#ifndef PATHCCH_ALLOW_LONG_PATHS
+#define PATHCCH_ALLOW_LONG_PATHS 0x00000001
+#endif
+#endif
int
_Py_isabs(const wchar_t *path)
{
#ifdef MS_WINDOWS
+ if (_PathCchSkipRoot_Initialized == 0) {
+ HMODULE pathapi = LoadLibraryExW(L"api-ms-win-core-path-l1-1-0.dll", NULL,
+ LOAD_LIBRARY_SEARCH_SYSTEM32);
+
+ if (pathapi) {
+ _PathCchSkipRoot = (PPathCchSkipRoot)GetProcAddress(pathapi, "PathCchSkipRoot");
+ } else {
+ _PathCchSkipRoot = NULL;
+ }
+
+ _PathCchSkipRoot_Initialized = 1;
+ }
+
+ HRESULT hr;
const wchar_t *tail;
- HRESULT hr = PathCchSkipRoot(path, &tail);
+ if (_PathCchSkipRoot) {
+ hr = _PathCchSkipRoot(path, &tail);
+ } else {
+ tail = PathSkipRootW(path);
+ if (!tail) {
+ hr = E_FAIL;
+ } else {
+ hr = S_OK;
+ }
+ }
+
if (FAILED(hr) || path == tail) {
return 0;
}
@@ -2086,6 +2117,11 @@ _Py_abspath(const wchar_t *path, wchar_t **abspath_p)
#endif
}
+#ifdef MS_WINDOWS
+static int _PathCchCombineEx_Initialized = 0;
+typedef HRESULT (__stdcall *PPathCchCombineEx) (PWSTR pszPathOut, size_t cchPathOut, PCWSTR pszPathIn, PCWSTR pszMore, ULONG dwFlags);
+static PPathCchCombineEx _PathCchCombineEx;
+#endif
// The caller must ensure "buffer" is big enough.
static int
@@ -2093,9 +2127,36 @@ join_relfile(wchar_t *buffer, size_t bufsize,
const wchar_t *dirname, const wchar_t *relfile)
{
#ifdef MS_WINDOWS
- if (FAILED(PathCchCombineEx(buffer, bufsize, dirname, relfile,
- PATHCCH_ALLOW_LONG_PATHS))) {
- return -1;
+
+ if (_PathCchCombineEx_Initialized == 0) {
+ HMODULE pathapi = LoadLibraryExW(L"api-ms-win-core-path-l1-1-0.dll", NULL,
+ LOAD_LIBRARY_SEARCH_SYSTEM32);
+
+ if (pathapi) {
+ _PathCchCombineEx = (PPathCchCombineEx)GetProcAddress(pathapi, "PathCchCombineEx");
+ } else {
+ _PathCchCombineEx = NULL;
+ }
+
+ _PathCchCombineEx_Initialized = 1;
+ }
+
+ if (_PathCchCombineEx) {
+ if (FAILED(_PathCchCombineEx(buffer, bufsize, dirname, relfile,
+ PATHCCH_ALLOW_LONG_PATHS))) {
+ return -1;
+ }
+ }
+ else {
+ size_t dirlen = wcslen(dirname);
+ size_t rellen = wcslen(relfile);
+ size_t maxlen = bufsize - 1;
+ if (maxlen > MAX_PATH || dirlen >= maxlen || rellen >= maxlen - dirlen) {
+ return -1;
+ }
+ wchar_t * r = PathCombineW(buffer, dirname, relfile);
+ if (!r)
+ return -1;
}
#else
assert(!_Py_isabs(relfile));
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