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author | monster <monster@ydb.tech> | 2022-07-07 14:41:37 +0300 |
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committer | monster <monster@ydb.tech> | 2022-07-07 14:41:37 +0300 |
commit | 06e5c21a835c0e923506c4ff27929f34e00761c2 (patch) | |
tree | 75efcbc6854ef9bd476eb8bf00cc5c900da436a2 /contrib/tools/python3/src/Python/dynload_win.c | |
parent | 03f024c4412e3aa613bb543cf1660176320ba8f4 (diff) | |
download | ydb-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.c | 288 |
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; -} |