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authormonster <monster@ydb.tech>2022-07-07 14:41:37 +0300
committermonster <monster@ydb.tech>2022-07-07 14:41:37 +0300
commit06e5c21a835c0e923506c4ff27929f34e00761c2 (patch)
tree75efcbc6854ef9bd476eb8bf00cc5c900da436a2 /contrib/tools/python3/src/Python/dynload_win.c
parent03f024c4412e3aa613bb543cf1660176320ba8f4 (diff)
downloadydb-06e5c21a835c0e923506c4ff27929f34e00761c2.tar.gz
fix ya.make
Diffstat (limited to 'contrib/tools/python3/src/Python/dynload_win.c')
-rw-r--r--contrib/tools/python3/src/Python/dynload_win.c288
1 files changed, 0 insertions, 288 deletions
diff --git a/contrib/tools/python3/src/Python/dynload_win.c b/contrib/tools/python3/src/Python/dynload_win.c
deleted file mode 100644
index 5702ab2cd7..0000000000
--- a/contrib/tools/python3/src/Python/dynload_win.c
+++ /dev/null
@@ -1,288 +0,0 @@
-
-/* Support for dynamic loading of extension modules */
-
-#include "Python.h"
-
-#ifdef HAVE_DIRECT_H
-#include <direct.h>
-#endif
-#include <ctype.h>
-
-#include "importdl.h"
-#include "patchlevel.h"
-#include <windows.h>
-
-#ifdef _DEBUG
-#define PYD_DEBUG_SUFFIX "_d"
-#else
-#define PYD_DEBUG_SUFFIX ""
-#endif
-
-#ifdef PYD_PLATFORM_TAG
-#define PYD_TAGGED_SUFFIX PYD_DEBUG_SUFFIX ".cp" Py_STRINGIFY(PY_MAJOR_VERSION) Py_STRINGIFY(PY_MINOR_VERSION) "-" PYD_PLATFORM_TAG ".pyd"
-#else
-#define PYD_TAGGED_SUFFIX PYD_DEBUG_SUFFIX ".cp" Py_STRINGIFY(PY_MAJOR_VERSION) Py_STRINGIFY(PY_MINOR_VERSION) ".pyd"
-#endif
-
-#define PYD_UNTAGGED_SUFFIX PYD_DEBUG_SUFFIX ".pyd"
-
-const char *_PyImport_DynLoadFiletab[] = {
- PYD_TAGGED_SUFFIX,
- PYD_UNTAGGED_SUFFIX,
- NULL
-};
-
-/* Function to return the name of the "python" DLL that the supplied module
- directly imports. Looks through the list of imported modules and
- returns the first entry that starts with "python" (case sensitive) and
- is followed by nothing but numbers until the separator (period).
-
- Returns a pointer to the import name, or NULL if no matching name was
- located.
-
- This function parses through the PE header for the module as loaded in
- memory by the system loader. The PE header is accessed as documented by
- Microsoft in the MSDN PE and COFF specification (2/99), and handles
- both PE32 and PE32+. It only worries about the direct import table and
- not the delay load import table since it's unlikely an extension is
- going to be delay loading Python (after all, it's already loaded).
-
- If any magic values are not found (e.g., the PE header or optional
- header magic), then this function simply returns NULL. */
-
-#define DWORD_AT(mem) (*(DWORD *)(mem))
-#define WORD_AT(mem) (*(WORD *)(mem))
-
-static char *GetPythonImport (HINSTANCE hModule)
-{
- unsigned char *dllbase, *import_data, *import_name;
- DWORD pe_offset, opt_offset;
- WORD opt_magic;
- int num_dict_off, import_off;
-
- /* Safety check input */
- if (hModule == NULL) {
- return NULL;
- }
-
- /* Module instance is also the base load address. First portion of
- memory is the MS-DOS loader, which holds the offset to the PE
- header (from the load base) at 0x3C */
- dllbase = (unsigned char *)hModule;
- pe_offset = DWORD_AT(dllbase + 0x3C);
-
- /* The PE signature must be "PE\0\0" */
- if (memcmp(dllbase+pe_offset,"PE\0\0",4)) {
- return NULL;
- }
-
- /* Following the PE signature is the standard COFF header (20
- bytes) and then the optional header. The optional header starts
- with a magic value of 0x10B for PE32 or 0x20B for PE32+ (PE32+
- uses 64-bits for some fields). It might also be 0x107 for a ROM
- image, but we don't process that here.
-
- The optional header ends with a data dictionary that directly
- points to certain types of data, among them the import entries
- (in the second table entry). Based on the header type, we
- determine offsets for the data dictionary count and the entry
- within the dictionary pointing to the imports. */
-
- opt_offset = pe_offset + 4 + 20;
- opt_magic = WORD_AT(dllbase+opt_offset);
- if (opt_magic == 0x10B) {
- /* PE32 */
- num_dict_off = 92;
- import_off = 104;
- } else if (opt_magic == 0x20B) {
- /* PE32+ */
- num_dict_off = 108;
- import_off = 120;
- } else {
- /* Unsupported */
- return NULL;
- }
-
- /* Now if an import table exists, offset to it and walk the list of
- imports. The import table is an array (ending when an entry has
- empty values) of structures (20 bytes each), which contains (at
- offset 12) a relative address (to the module base) at which a
- string constant holding the import name is located. */
-
- if (DWORD_AT(dllbase + opt_offset + num_dict_off) >= 2) {
- /* We have at least 2 tables - the import table is the second
- one. But still it may be that the table size is zero */
- if (0 == DWORD_AT(dllbase + opt_offset + import_off + sizeof(DWORD)))
- return NULL;
- import_data = dllbase + DWORD_AT(dllbase +
- opt_offset +
- import_off);
- while (DWORD_AT(import_data)) {
- import_name = dllbase + DWORD_AT(import_data+12);
- if (strlen(import_name) >= 6 &&
- !strncmp(import_name,"python",6)) {
- char *pch;
-
-#ifndef _DEBUG
- /* In a release version, don't claim that python3.dll is
- a Python DLL. */
- if (strcmp(import_name, "python3.dll") == 0) {
- import_data += 20;
- continue;
- }
-#endif
-
- /* Ensure python prefix is followed only
- by numbers to the end of the basename */
- pch = import_name + 6;
-#ifdef _DEBUG
- while (*pch && pch[0] != '_' && pch[1] != 'd' && pch[2] != '.') {
-#else
- while (*pch && *pch != '.') {
-#endif
- if (*pch >= '0' && *pch <= '9') {
- pch++;
- } else {
- pch = NULL;
- break;
- }
- }
-
- if (pch) {
- /* Found it - return the name */
- return import_name;
- }
- }
- import_data += 20;
- }
- }
-
- return NULL;
-}
-
-dl_funcptr _PyImport_FindSharedFuncptrWindows(const char *prefix,
- const char *shortname,
- PyObject *pathname, FILE *fp)
-{
- dl_funcptr p;
- char funcname[258], *import_python;
-
- _Py_CheckPython3();
-
-#if USE_UNICODE_WCHAR_CACHE
- const wchar_t *wpathname = _PyUnicode_AsUnicode(pathname);
-#else /* USE_UNICODE_WCHAR_CACHE */
- wchar_t *wpathname = PyUnicode_AsWideCharString(pathname, NULL);
-#endif /* USE_UNICODE_WCHAR_CACHE */
- if (wpathname == NULL)
- return NULL;
-
- PyOS_snprintf(funcname, sizeof(funcname), "%.20s_%.200s", prefix, shortname);
-
- {
- HINSTANCE hDLL = NULL;
- unsigned int old_mode;
-
- /* Don't display a message box when Python can't load a DLL */
- old_mode = SetErrorMode(SEM_FAILCRITICALERRORS);
-
- /* bpo-36085: We use LoadLibraryEx with restricted search paths
- to avoid DLL preloading attacks and enable use of the
- AddDllDirectory function. We add SEARCH_DLL_LOAD_DIR to
- ensure DLLs adjacent to the PYD are preferred. */
- Py_BEGIN_ALLOW_THREADS
- hDLL = LoadLibraryExW(wpathname, NULL,
- LOAD_LIBRARY_SEARCH_DEFAULT_DIRS |
- LOAD_LIBRARY_SEARCH_DLL_LOAD_DIR);
- Py_END_ALLOW_THREADS
-#if !USE_UNICODE_WCHAR_CACHE
- PyMem_Free(wpathname);
-#endif /* USE_UNICODE_WCHAR_CACHE */
-
- /* restore old error mode settings */
- SetErrorMode(old_mode);
-
- if (hDLL==NULL){
- PyObject *message;
- unsigned int errorCode;
-
- /* Get an error string from Win32 error code */
- wchar_t theInfo[256]; /* Pointer to error text
- from system */
- int theLength; /* Length of error text */
-
- errorCode = GetLastError();
-
- theLength = FormatMessageW(
- FORMAT_MESSAGE_FROM_SYSTEM |
- FORMAT_MESSAGE_IGNORE_INSERTS, /* flags */
- NULL, /* message source */
- errorCode, /* the message (error) ID */
- MAKELANGID(LANG_NEUTRAL,
- SUBLANG_DEFAULT),
- /* Default language */
- theInfo, /* the buffer */
- sizeof(theInfo) / sizeof(wchar_t), /* size in wchars */
- NULL); /* no additional format args. */
-
- /* Problem: could not get the error message.
- This should not happen if called correctly. */
- if (theLength == 0) {
- message = PyUnicode_FromFormat(
- "DLL load failed with error code %u while importing %s",
- errorCode, shortname);
- } else {
- /* For some reason a \r\n
- is appended to the text */
- if (theLength >= 2 &&
- theInfo[theLength-2] == '\r' &&
- theInfo[theLength-1] == '\n') {
- theLength -= 2;
- theInfo[theLength] = '\0';
- }
- message = PyUnicode_FromFormat(
- "DLL load failed while importing %s: ", shortname);
-
- PyUnicode_AppendAndDel(&message,
- PyUnicode_FromWideChar(
- theInfo,
- theLength));
- }
- if (message != NULL) {
- PyObject *shortname_obj = PyUnicode_FromString(shortname);
- PyErr_SetImportError(message, shortname_obj, pathname);
- Py_XDECREF(shortname_obj);
- Py_DECREF(message);
- }
- return NULL;
- } else {
- char buffer[256];
-
- PyOS_snprintf(buffer, sizeof(buffer),
-#ifdef _DEBUG
- "python%d%d_d.dll",
-#else
- "python%d%d.dll",
-#endif
- PY_MAJOR_VERSION,PY_MINOR_VERSION);
- import_python = GetPythonImport(hDLL);
-
- if (import_python &&
- _stricmp(buffer,import_python)) {
- PyErr_Format(PyExc_ImportError,
- "Module use of %.150s conflicts "
- "with this version of Python.",
- import_python);
- Py_BEGIN_ALLOW_THREADS
- FreeLibrary(hDLL);
- Py_END_ALLOW_THREADS
- return NULL;
- }
- }
- Py_BEGIN_ALLOW_THREADS
- p = GetProcAddress(hDLL, funcname);
- Py_END_ALLOW_THREADS
- }
-
- return p;
-}