857 lines
19 KiB
C
857 lines
19 KiB
C
#include <windows.h>
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#include <assert.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include "hook/hr.h"
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#include "hook/table.h"
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#include "hooklib/path.h"
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/* Helpers */
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static void path_hook_init(void);
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static BOOL path_transform_a(char **out, const char *src);
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static BOOL path_transform_w(wchar_t **out, const wchar_t *src);
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/* API hooks */
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static BOOL WINAPI hook_CreateDirectoryA(
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const char *lpFileName,
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SECURITY_ATTRIBUTES *lpSecurityAttributes);
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static BOOL WINAPI hook_CreateDirectoryW(
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const wchar_t *lpFileName,
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SECURITY_ATTRIBUTES *lpSecurityAttributes);
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static BOOL WINAPI hook_CreateDirectoryExA(
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const char *lpTemplateDirectory,
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const char *lpNewDirectory,
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SECURITY_ATTRIBUTES *lpSecurityAttributes);
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static BOOL WINAPI hook_CreateDirectoryExW(
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const wchar_t *lpTemplateDirectory,
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const wchar_t *lpNewDirectory,
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SECURITY_ATTRIBUTES *lpSecurityAttributes);
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static HANDLE WINAPI hook_CreateFileA(
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const char *lpFileName,
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uint32_t dwDesiredAccess,
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uint32_t dwShareMode,
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SECURITY_ATTRIBUTES *lpSecurityAttributes,
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uint32_t dwCreationDisposition,
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uint32_t dwFlagsAndAttributes,
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HANDLE hTemplateFile);
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static HANDLE WINAPI hook_CreateFileW(
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const wchar_t *lpFileName,
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uint32_t dwDesiredAccess,
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uint32_t dwShareMode,
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SECURITY_ATTRIBUTES *lpSecurityAttributes,
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uint32_t dwCreationDisposition,
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uint32_t dwFlagsAndAttributes,
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HANDLE hTemplateFile);
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static HANDLE WINAPI hook_FindFirstFileA(
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const char *lpFileName,
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LPWIN32_FIND_DATAA lpFindFileData);
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static HANDLE WINAPI hook_FindFirstFileW(
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const wchar_t *lpFileName,
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LPWIN32_FIND_DATAW lpFindFileData);
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static HANDLE WINAPI hook_FindFirstFileExA(
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const char *lpFileName,
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FINDEX_INFO_LEVELS fInfoLevelId,
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void *lpFindFileData,
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FINDEX_SEARCH_OPS fSearchOp,
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void *lpSearchFilter,
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DWORD dwAdditionalFlags);
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static HANDLE WINAPI hook_FindFirstFileExW(
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const wchar_t *lpFileName,
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FINDEX_INFO_LEVELS fInfoLevelId,
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void *lpFindFileData,
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FINDEX_SEARCH_OPS fSearchOp,
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void *lpSearchFilter,
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DWORD dwAdditionalFlags);
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static DWORD WINAPI hook_GetFileAttributesA(const char *lpFileName);
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static DWORD WINAPI hook_GetFileAttributesW(const wchar_t *lpFileName);
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static BOOL WINAPI hook_GetFileAttributesExA(
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const char *lpFileName,
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GET_FILEEX_INFO_LEVELS fInfoLevelId,
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void *lpFileInformation);
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static BOOL WINAPI hook_GetFileAttributesExW(
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const wchar_t *lpFileName,
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GET_FILEEX_INFO_LEVELS fInfoLevelId,
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void *lpFileInformation);
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static BOOL WINAPI hook_RemoveDirectoryA(const char *lpFileName);
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static BOOL WINAPI hook_RemoveDirectoryW(const wchar_t *lpFileName);
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/* Link pointers */
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static BOOL (WINAPI *next_CreateDirectoryA)(
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const char *lpFileName,
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SECURITY_ATTRIBUTES *lpSecurityAttributes);
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static BOOL (WINAPI *next_CreateDirectoryW)(
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const wchar_t *lpFileName,
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SECURITY_ATTRIBUTES *lpSecurityAttributes);
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static BOOL (WINAPI *next_CreateDirectoryExA)(
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const char *lpTemplateDirectory,
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const char *lpNewDirectory,
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SECURITY_ATTRIBUTES *lpSecurityAttributes);
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static BOOL (WINAPI *next_CreateDirectoryExW)(
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const wchar_t *lpTemplateDirectory,
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const wchar_t *lpNewDirectory,
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SECURITY_ATTRIBUTES *lpSecurityAttributes);
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static HANDLE (WINAPI *next_CreateFileA)(
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const char *lpFileName,
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uint32_t dwDesiredAccess,
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uint32_t dwShareMode,
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SECURITY_ATTRIBUTES *lpSecurityAttributes,
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uint32_t dwCreationDisposition,
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uint32_t dwFlagsAndAttributes,
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HANDLE hTemplateFile);
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static HANDLE (WINAPI *next_CreateFileW)(
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const wchar_t *lpFileName,
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uint32_t dwDesiredAccess,
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uint32_t dwShareMode,
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SECURITY_ATTRIBUTES *lpSecurityAttributes,
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uint32_t dwCreationDisposition,
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uint32_t dwFlagsAndAttributes,
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HANDLE hTemplateFile);
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static HANDLE (WINAPI *next_FindFirstFileA)(
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const char *lpFileName,
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LPWIN32_FIND_DATAA lpFindFileData);
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static HANDLE (WINAPI *next_FindFirstFileW)(
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const wchar_t *lpFileName,
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LPWIN32_FIND_DATAW lpFindFileData);
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static HANDLE (WINAPI *next_FindFirstFileExA)(
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const char *lpFileName,
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FINDEX_INFO_LEVELS fInfoLevelId,
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void *lpFindFileData,
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FINDEX_SEARCH_OPS fSearchOp,
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void *lpSearchFilter,
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DWORD dwAdditionalFlags);
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static HANDLE (WINAPI *next_FindFirstFileExW)(
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const wchar_t *lpFileName,
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FINDEX_INFO_LEVELS fInfoLevelId,
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void *lpFindFileData,
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FINDEX_SEARCH_OPS fSearchOp,
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void *lpSearchFilter,
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DWORD dwAdditionalFlags);
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static DWORD (WINAPI *next_GetFileAttributesA)(const char *lpFileName);
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static DWORD (WINAPI *next_GetFileAttributesW)(const wchar_t *lpFileName);
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static BOOL (WINAPI *next_GetFileAttributesExA)(
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const char *lpFileName,
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GET_FILEEX_INFO_LEVELS fInfoLevelId,
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void *lpFileInformation);
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static BOOL (WINAPI *next_GetFileAttributesExW)(
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const wchar_t *lpFileName,
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GET_FILEEX_INFO_LEVELS fInfoLevelId,
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void *lpFileInformation);
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static BOOL (WINAPI *next_RemoveDirectoryA)(const char *lpFileName);
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static BOOL (WINAPI *next_RemoveDirectoryW)(const wchar_t *lpFileName);
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/* Hook table */
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static const struct hook_symbol path_hook_syms[] = {
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{
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.name = "CreateDirectoryA",
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.patch = hook_CreateDirectoryA,
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.link = (void **) &next_CreateDirectoryA,
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}, {
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.name = "CreateDirectoryW",
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.patch = hook_CreateDirectoryW,
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.link = (void **) &next_CreateDirectoryW,
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}, {
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.name = "CreateDirectoryExA",
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.patch = hook_CreateDirectoryExA,
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.link = (void **) &next_CreateDirectoryExA,
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}, {
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.name = "CreateDirectoryExW",
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.patch = hook_CreateDirectoryExW,
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.link = (void **) &next_CreateDirectoryExW,
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}, {
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.name = "CreateFileA",
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.patch = hook_CreateFileA,
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.link = (void **) &next_CreateFileA,
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}, {
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.name = "CreateFileW",
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.patch = hook_CreateFileW,
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.link = (void **) &next_CreateFileW,
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}, {
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.name = "FindFirstFileA",
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.patch = hook_FindFirstFileA,
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.link = (void **) &next_FindFirstFileA,
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}, {
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.name = "FindFirstFileW",
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.patch = hook_FindFirstFileW,
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.link = (void **) &next_FindFirstFileW,
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}, {
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.name = "FindFirstFileExA",
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.patch = hook_FindFirstFileExA,
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.link = (void **) &next_FindFirstFileExA,
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}, {
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.name = "FindFirstFileExW",
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.patch = hook_FindFirstFileExW,
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.link = (void **) &next_FindFirstFileExW,
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}, {
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.name = "GetFileAttributesA",
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.patch = hook_GetFileAttributesA,
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.link = (void **) &next_GetFileAttributesA,
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}, {
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.name = "GetFileAttributesW",
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.patch = hook_GetFileAttributesW,
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.link = (void **) &next_GetFileAttributesW,
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}, {
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.name = "GetFileAttributesExA",
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.patch = hook_GetFileAttributesExA,
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.link = (void **) &next_GetFileAttributesExA,
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}, {
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.name = "GetFileAttributesExW",
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.patch = hook_GetFileAttributesExW,
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.link = (void **) &next_GetFileAttributesExW,
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}, {
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.name = "RemoveDirectoryA",
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.patch = hook_RemoveDirectoryA,
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.link = (void **) &next_RemoveDirectoryA,
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}, {
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.name = "RemoveDirectoryW",
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.patch = hook_RemoveDirectoryW,
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.link = (void **) &next_RemoveDirectoryW,
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}
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};
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static bool path_hook_initted;
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static CRITICAL_SECTION path_hook_lock;
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static path_hook_t *path_hook_list;
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static size_t path_hook_count;
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HRESULT path_hook_push(path_hook_t hook)
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{
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path_hook_t *tmp;
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HRESULT hr;
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assert(hook != NULL);
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path_hook_init();
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EnterCriticalSection(&path_hook_lock);
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tmp = realloc(
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path_hook_list,
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(path_hook_count + 1) * sizeof(path_hook_t));
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if (tmp == NULL) {
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hr = E_OUTOFMEMORY;
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goto end;
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}
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path_hook_list = tmp;
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path_hook_list[path_hook_count++] = hook;
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hr = S_OK;
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end:
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LeaveCriticalSection(&path_hook_lock);
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return hr;
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}
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static void path_hook_init(void)
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{
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/* Init is not thread safe because API hook init is not thread safe blah
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blah blah you know the drill by now. */
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if (path_hook_initted) {
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return;
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}
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path_hook_initted = true;
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InitializeCriticalSection(&path_hook_lock);
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path_hook_insert_hooks(NULL);
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}
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void path_hook_insert_hooks(HMODULE target)
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{
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hook_table_apply(
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target,
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"kernel32.dll",
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path_hook_syms,
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_countof(path_hook_syms));
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}
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static BOOL path_transform_a(char **out, const char *src)
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{
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wchar_t *src_w;
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size_t src_c;
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wchar_t *dest_w;
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char *dest_a;
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size_t dest_s;
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BOOL ok;
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assert(out != NULL);
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src_w = NULL;
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dest_w = NULL;
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dest_a = NULL;
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*out = NULL;
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if (src == NULL) {
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SetLastError(ERROR_INVALID_PARAMETER);
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ok = FALSE;
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goto end;
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}
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/* Widen the path */
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mbstowcs_s(&src_c, NULL, 0, src, 0);
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src_w = malloc(src_c * sizeof(wchar_t));
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if (src_w == NULL) {
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SetLastError(ERROR_OUTOFMEMORY);
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ok = FALSE;
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goto end;
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}
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mbstowcs_s(NULL, src_w, src_c, src, src_c - 1);
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/* Try applying a path transform */
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ok = path_transform_w(&dest_w, src_w); /* Take ownership! */
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if (!ok || dest_w == NULL) {
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goto end;
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}
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/* Narrow the transformed path */
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wcstombs_s(&dest_s, NULL, 0, dest_w, 0);
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dest_a = malloc(dest_s * sizeof(char));
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if (dest_a == NULL) {
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SetLastError(ERROR_OUTOFMEMORY);
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ok = FALSE;
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goto end;
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}
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wcstombs_s(NULL, dest_a, dest_s, dest_w, dest_s - 1);
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*out = dest_a; /* Relinquish ownership to caller! */
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ok = TRUE;
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end:
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free(dest_w);
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free(src_w);
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return ok;
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}
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static BOOL path_transform_w(wchar_t **out, const wchar_t *src)
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{
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BOOL ok;
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HRESULT hr;
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wchar_t *dest;
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size_t dest_c;
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size_t i;
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assert(out != NULL);
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dest = NULL;
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*out = NULL;
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EnterCriticalSection(&path_hook_lock);
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for (i = 0 ; i < path_hook_count ; i++) {
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hr = path_hook_list[i](src, NULL, &dest_c);
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if (FAILED(hr)) {
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ok = hr_propagate_win32(hr, FALSE);
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goto end;
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}
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if (hr == S_FALSE) {
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continue;
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}
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dest = malloc(dest_c * sizeof(wchar_t));
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if (dest == NULL) {
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SetLastError(ERROR_OUTOFMEMORY);
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ok = FALSE;
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goto end;
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}
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hr = path_hook_list[i](src, dest, &dest_c);
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if (FAILED(hr)) {
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ok = hr_propagate_win32(hr, FALSE);
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goto end;
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}
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break;
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}
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*out = dest;
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dest = NULL;
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ok = TRUE;
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end:
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LeaveCriticalSection(&path_hook_lock);
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free(dest);
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return ok;
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}
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int path_compare_w(const wchar_t *string1, const wchar_t *string2, size_t count)
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{
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size_t i;
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wchar_t c1, c2;
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assert(string1 != NULL);
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assert(string2 != NULL);
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for (i = 0; i < count && string1[i] && string2[i]; i++) {
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c1 = towlower(string1[i]);
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if (c1 == '/') {
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c1 = '\\';
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}
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c2 = towlower(string2[i]);
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if (c2 == '/') {
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c2 = '\\';
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}
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if (c1 != c2) {
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break;
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}
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}
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return i == count ? 0 : string2[i] - string1[i];
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}
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/* Dumping ground for kernel32 file system ops whose path parameters we have to
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hook into and translate. This list will grow over time as we go back and
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fix up older games that don't pay attention to the mount point registry. */
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static BOOL WINAPI hook_CreateDirectoryA(
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const char *lpFileName,
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SECURITY_ATTRIBUTES *lpSecurityAttributes)
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{
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char *trans;
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BOOL ok;
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ok = path_transform_a(&trans, lpFileName);
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if (!ok) {
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return FALSE;
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}
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ok = next_CreateDirectoryA(
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trans ? trans : lpFileName,
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lpSecurityAttributes);
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free(trans);
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return ok;
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}
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static BOOL WINAPI hook_CreateDirectoryW(
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const wchar_t *lpFileName,
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SECURITY_ATTRIBUTES *lpSecurityAttributes)
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{
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wchar_t *trans;
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BOOL ok;
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ok = path_transform_w(&trans, lpFileName);
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if (!ok) {
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return FALSE;
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}
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ok = next_CreateDirectoryW(
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trans ? trans : lpFileName,
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lpSecurityAttributes);
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free(trans);
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return ok;
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}
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static BOOL WINAPI hook_CreateDirectoryExA(
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const char *lpTemplateDirectory,
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const char *lpNewDirectory,
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SECURITY_ATTRIBUTES *lpSecurityAttributes)
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{
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char *trans;
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BOOL ok;
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ok = path_transform_a(&trans, lpNewDirectory);
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if (!ok) {
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return FALSE;
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}
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ok = next_CreateDirectoryExA(
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lpTemplateDirectory,
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trans ? trans : lpNewDirectory,
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lpSecurityAttributes);
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free(trans);
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return ok;
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}
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static BOOL WINAPI hook_CreateDirectoryExW(
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const wchar_t *lpTemplateDirectory,
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const wchar_t *lpNewDirectory,
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SECURITY_ATTRIBUTES *lpSecurityAttributes)
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{
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wchar_t *trans;
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BOOL ok;
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ok = path_transform_w(&trans, lpNewDirectory);
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if (!ok) {
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return FALSE;
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}
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ok = next_CreateDirectoryExW(
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lpTemplateDirectory,
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trans ? trans : lpNewDirectory,
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lpSecurityAttributes);
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free(trans);
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return ok;
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}
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/* Don't pull in the entire iohook framework just for CreateFileA/CreateFileW */
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static HANDLE WINAPI hook_CreateFileA(
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const char *lpFileName,
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uint32_t dwDesiredAccess,
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uint32_t dwShareMode,
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SECURITY_ATTRIBUTES *lpSecurityAttributes,
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uint32_t dwCreationDisposition,
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uint32_t dwFlagsAndAttributes,
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HANDLE hTemplateFile)
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{
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char *trans;
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HANDLE result;
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BOOL ok;
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ok = path_transform_a(&trans, lpFileName);
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if (!ok) {
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return INVALID_HANDLE_VALUE;
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}
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result = next_CreateFileA(
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trans ? trans : lpFileName,
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dwDesiredAccess,
|
|
dwShareMode,
|
|
lpSecurityAttributes,
|
|
dwCreationDisposition,
|
|
dwFlagsAndAttributes,
|
|
hTemplateFile);
|
|
|
|
free(trans);
|
|
|
|
return result;
|
|
}
|
|
|
|
static HANDLE WINAPI hook_CreateFileW(
|
|
const wchar_t *lpFileName,
|
|
uint32_t dwDesiredAccess,
|
|
uint32_t dwShareMode,
|
|
SECURITY_ATTRIBUTES *lpSecurityAttributes,
|
|
uint32_t dwCreationDisposition,
|
|
uint32_t dwFlagsAndAttributes,
|
|
HANDLE hTemplateFile)
|
|
{
|
|
wchar_t *trans;
|
|
HANDLE result;
|
|
BOOL ok;
|
|
|
|
ok = path_transform_w(&trans, lpFileName);
|
|
|
|
if (!ok) {
|
|
return INVALID_HANDLE_VALUE;
|
|
}
|
|
|
|
result = next_CreateFileW(
|
|
trans ? trans : lpFileName,
|
|
dwDesiredAccess,
|
|
dwShareMode,
|
|
lpSecurityAttributes,
|
|
dwCreationDisposition,
|
|
dwFlagsAndAttributes,
|
|
hTemplateFile);
|
|
|
|
free(trans);
|
|
|
|
return result;
|
|
}
|
|
|
|
static HANDLE WINAPI hook_FindFirstFileA(
|
|
const char *lpFileName,
|
|
LPWIN32_FIND_DATAA lpFindFileData)
|
|
{
|
|
char *trans;
|
|
HANDLE result;
|
|
BOOL ok;
|
|
|
|
ok = path_transform_a(&trans, lpFileName);
|
|
|
|
if (!ok) {
|
|
return INVALID_HANDLE_VALUE;
|
|
}
|
|
|
|
result = next_FindFirstFileA(trans ? trans : lpFileName, lpFindFileData);
|
|
|
|
free(trans);
|
|
|
|
return result;
|
|
}
|
|
|
|
static HANDLE WINAPI hook_FindFirstFileW(
|
|
const wchar_t *lpFileName,
|
|
LPWIN32_FIND_DATAW lpFindFileData)
|
|
{
|
|
wchar_t *trans;
|
|
HANDLE result;
|
|
BOOL ok;
|
|
|
|
ok = path_transform_w(&trans, lpFileName);
|
|
|
|
if (!ok) {
|
|
return INVALID_HANDLE_VALUE;
|
|
}
|
|
|
|
result = next_FindFirstFileW(trans ? trans : lpFileName, lpFindFileData);
|
|
|
|
free(trans);
|
|
|
|
return result;
|
|
}
|
|
|
|
static HANDLE WINAPI hook_FindFirstFileExA(
|
|
const char *lpFileName,
|
|
FINDEX_INFO_LEVELS fInfoLevelId,
|
|
void *lpFindFileData,
|
|
FINDEX_SEARCH_OPS fSearchOp,
|
|
void *lpSearchFilter,
|
|
DWORD dwAdditionalFlags)
|
|
{
|
|
char *trans;
|
|
HANDLE result;
|
|
BOOL ok;
|
|
|
|
ok = path_transform_a(&trans, lpFileName);
|
|
|
|
if (!ok) {
|
|
return INVALID_HANDLE_VALUE;
|
|
}
|
|
|
|
result = next_FindFirstFileExA(
|
|
trans ? trans : lpFileName,
|
|
fInfoLevelId,
|
|
lpFindFileData,
|
|
fSearchOp,
|
|
lpSearchFilter,
|
|
dwAdditionalFlags);
|
|
|
|
free(trans);
|
|
|
|
return result;
|
|
}
|
|
|
|
static HANDLE WINAPI hook_FindFirstFileExW(
|
|
const wchar_t *lpFileName,
|
|
FINDEX_INFO_LEVELS fInfoLevelId,
|
|
void *lpFindFileData,
|
|
FINDEX_SEARCH_OPS fSearchOp,
|
|
void *lpSearchFilter,
|
|
DWORD dwAdditionalFlags)
|
|
{
|
|
wchar_t *trans;
|
|
HANDLE result;
|
|
BOOL ok;
|
|
|
|
ok = path_transform_w(&trans, lpFileName);
|
|
|
|
if (!ok) {
|
|
return INVALID_HANDLE_VALUE;
|
|
}
|
|
|
|
result = next_FindFirstFileExW(
|
|
trans ? trans : lpFileName,
|
|
fInfoLevelId,
|
|
lpFindFileData,
|
|
fSearchOp,
|
|
lpSearchFilter,
|
|
dwAdditionalFlags);
|
|
|
|
free(trans);
|
|
|
|
return result;
|
|
}
|
|
|
|
static DWORD WINAPI hook_GetFileAttributesA(const char *lpFileName)
|
|
{
|
|
char *trans;
|
|
DWORD result;
|
|
BOOL ok;
|
|
|
|
ok = path_transform_a(&trans, lpFileName);
|
|
|
|
if (!ok) {
|
|
return INVALID_FILE_ATTRIBUTES;
|
|
}
|
|
|
|
result = next_GetFileAttributesA(trans ? trans : lpFileName);
|
|
free(trans);
|
|
|
|
return result;
|
|
}
|
|
|
|
static DWORD WINAPI hook_GetFileAttributesW(const wchar_t *lpFileName)
|
|
{
|
|
wchar_t *trans;
|
|
DWORD result;
|
|
BOOL ok;
|
|
|
|
ok = path_transform_w(&trans, lpFileName);
|
|
|
|
if (!ok) {
|
|
return INVALID_FILE_ATTRIBUTES;
|
|
}
|
|
|
|
result = next_GetFileAttributesW(trans ? trans : lpFileName);
|
|
|
|
free(trans);
|
|
|
|
return result;
|
|
}
|
|
|
|
static BOOL WINAPI hook_GetFileAttributesExA(
|
|
const char *lpFileName,
|
|
GET_FILEEX_INFO_LEVELS fInfoLevelId,
|
|
void *lpFileInformation)
|
|
{
|
|
char *trans;
|
|
BOOL ok;
|
|
|
|
ok = path_transform_a(&trans, lpFileName);
|
|
|
|
if (!ok) {
|
|
return INVALID_FILE_ATTRIBUTES;
|
|
}
|
|
|
|
ok = next_GetFileAttributesExA(
|
|
trans ? trans : lpFileName,
|
|
fInfoLevelId,
|
|
lpFileInformation);
|
|
|
|
free(trans);
|
|
|
|
return ok;
|
|
}
|
|
|
|
static BOOL WINAPI hook_GetFileAttributesExW(
|
|
const wchar_t *lpFileName,
|
|
GET_FILEEX_INFO_LEVELS fInfoLevelId,
|
|
void *lpFileInformation)
|
|
{
|
|
wchar_t *trans;
|
|
BOOL ok;
|
|
|
|
ok = path_transform_w(&trans, lpFileName);
|
|
|
|
if (!ok) {
|
|
return INVALID_FILE_ATTRIBUTES;
|
|
}
|
|
|
|
ok = next_GetFileAttributesExW(
|
|
trans ? trans : lpFileName,
|
|
fInfoLevelId,
|
|
lpFileInformation);
|
|
|
|
free(trans);
|
|
|
|
return ok;
|
|
}
|
|
|
|
static BOOL WINAPI hook_RemoveDirectoryA(const char *lpFileName)
|
|
{
|
|
char *trans;
|
|
BOOL ok;
|
|
|
|
ok = path_transform_a(&trans, lpFileName);
|
|
|
|
if (!ok) {
|
|
return FALSE;
|
|
}
|
|
|
|
ok = next_RemoveDirectoryA(trans ? trans : lpFileName);
|
|
|
|
free(trans);
|
|
|
|
return ok;
|
|
}
|
|
|
|
static BOOL WINAPI hook_RemoveDirectoryW(const wchar_t *lpFileName)
|
|
{
|
|
wchar_t *trans;
|
|
BOOL ok;
|
|
|
|
ok = path_transform_w(&trans, lpFileName);
|
|
|
|
if (!ok) {
|
|
return FALSE;
|
|
}
|
|
|
|
ok = next_RemoveDirectoryW(trans ? trans : lpFileName);
|
|
|
|
free(trans);
|
|
|
|
return ok;
|
|
}
|