You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
426 lines
12 KiB
426 lines
12 KiB
//===- FuzzerIOWindows.cpp - IO utils for Windows. ------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
// IO functions implementation for Windows.
|
|
//===----------------------------------------------------------------------===//
|
|
#include "FuzzerPlatform.h"
|
|
#if LIBFUZZER_WINDOWS
|
|
|
|
#include "FuzzerExtFunctions.h"
|
|
#include "FuzzerIO.h"
|
|
#include <cstdarg>
|
|
#include <cstdio>
|
|
#include <fstream>
|
|
#include <io.h>
|
|
#include <iterator>
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
#include <windows.h>
|
|
|
|
namespace fuzzer {
|
|
|
|
static bool IsFile(const std::string &Path, const DWORD &FileAttributes) {
|
|
|
|
if (FileAttributes & FILE_ATTRIBUTE_NORMAL)
|
|
return true;
|
|
|
|
if (FileAttributes & FILE_ATTRIBUTE_DIRECTORY)
|
|
return false;
|
|
|
|
HANDLE FileHandle(
|
|
CreateFileA(Path.c_str(), 0, FILE_SHARE_READ, NULL, OPEN_EXISTING,
|
|
FILE_FLAG_BACKUP_SEMANTICS, 0));
|
|
|
|
if (FileHandle == INVALID_HANDLE_VALUE) {
|
|
Printf("CreateFileA() failed for \"%s\" (Error code: %lu).\n", Path.c_str(),
|
|
GetLastError());
|
|
return false;
|
|
}
|
|
|
|
DWORD FileType = GetFileType(FileHandle);
|
|
|
|
if (FileType == FILE_TYPE_UNKNOWN) {
|
|
Printf("GetFileType() failed for \"%s\" (Error code: %lu).\n", Path.c_str(),
|
|
GetLastError());
|
|
CloseHandle(FileHandle);
|
|
return false;
|
|
}
|
|
|
|
if (FileType != FILE_TYPE_DISK) {
|
|
CloseHandle(FileHandle);
|
|
return false;
|
|
}
|
|
|
|
CloseHandle(FileHandle);
|
|
return true;
|
|
}
|
|
|
|
bool IsFile(const std::string &Path) {
|
|
DWORD Att = GetFileAttributesA(Path.c_str());
|
|
|
|
if (Att == INVALID_FILE_ATTRIBUTES) {
|
|
Printf("GetFileAttributesA() failed for \"%s\" (Error code: %lu).\n",
|
|
Path.c_str(), GetLastError());
|
|
return false;
|
|
}
|
|
|
|
return IsFile(Path, Att);
|
|
}
|
|
|
|
static bool IsDir(DWORD FileAttrs) {
|
|
if (FileAttrs == INVALID_FILE_ATTRIBUTES) return false;
|
|
return FileAttrs & FILE_ATTRIBUTE_DIRECTORY;
|
|
}
|
|
|
|
bool IsDirectory(const std::string &Path) {
|
|
DWORD Att = GetFileAttributesA(Path.c_str());
|
|
|
|
if (Att == INVALID_FILE_ATTRIBUTES) {
|
|
Printf("GetFileAttributesA() failed for \"%s\" (Error code: %lu).\n",
|
|
Path.c_str(), GetLastError());
|
|
return false;
|
|
}
|
|
|
|
return IsDir(Att);
|
|
}
|
|
|
|
std::string Basename(const std::string &Path) {
|
|
size_t Pos = Path.find_last_of("/\\");
|
|
if (Pos == std::string::npos) return Path;
|
|
assert(Pos < Path.size());
|
|
return Path.substr(Pos + 1);
|
|
}
|
|
|
|
size_t FileSize(const std::string &Path) {
|
|
WIN32_FILE_ATTRIBUTE_DATA attr;
|
|
if (!GetFileAttributesExA(Path.c_str(), GetFileExInfoStandard, &attr)) {
|
|
DWORD LastError = GetLastError();
|
|
if (LastError != ERROR_FILE_NOT_FOUND)
|
|
Printf("GetFileAttributesExA() failed for \"%s\" (Error code: %lu).\n",
|
|
Path.c_str(), LastError);
|
|
return 0;
|
|
}
|
|
ULARGE_INTEGER size;
|
|
size.HighPart = attr.nFileSizeHigh;
|
|
size.LowPart = attr.nFileSizeLow;
|
|
return size.QuadPart;
|
|
}
|
|
|
|
void ListFilesInDirRecursive(const std::string &Dir, long *Epoch,
|
|
Vector<std::string> *V, bool TopDir) {
|
|
auto E = GetEpoch(Dir);
|
|
if (Epoch)
|
|
if (E && *Epoch >= E) return;
|
|
|
|
std::string Path(Dir);
|
|
assert(!Path.empty());
|
|
if (Path.back() != '\\')
|
|
Path.push_back('\\');
|
|
Path.push_back('*');
|
|
|
|
// Get the first directory entry.
|
|
WIN32_FIND_DATAA FindInfo;
|
|
HANDLE FindHandle(FindFirstFileA(Path.c_str(), &FindInfo));
|
|
if (FindHandle == INVALID_HANDLE_VALUE)
|
|
{
|
|
if (GetLastError() == ERROR_FILE_NOT_FOUND)
|
|
return;
|
|
Printf("No such file or directory: %s; exiting\n", Dir.c_str());
|
|
exit(1);
|
|
}
|
|
|
|
do {
|
|
std::string FileName = DirPlusFile(Dir, FindInfo.cFileName);
|
|
|
|
if (FindInfo.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
|
|
size_t FilenameLen = strlen(FindInfo.cFileName);
|
|
if ((FilenameLen == 1 && FindInfo.cFileName[0] == '.') ||
|
|
(FilenameLen == 2 && FindInfo.cFileName[0] == '.' &&
|
|
FindInfo.cFileName[1] == '.'))
|
|
continue;
|
|
|
|
ListFilesInDirRecursive(FileName, Epoch, V, false);
|
|
}
|
|
else if (IsFile(FileName, FindInfo.dwFileAttributes))
|
|
V->push_back(FileName);
|
|
} while (FindNextFileA(FindHandle, &FindInfo));
|
|
|
|
DWORD LastError = GetLastError();
|
|
if (LastError != ERROR_NO_MORE_FILES)
|
|
Printf("FindNextFileA failed (Error code: %lu).\n", LastError);
|
|
|
|
FindClose(FindHandle);
|
|
|
|
if (Epoch && TopDir)
|
|
*Epoch = E;
|
|
}
|
|
|
|
|
|
void IterateDirRecursive(const std::string &Dir,
|
|
void (*DirPreCallback)(const std::string &Dir),
|
|
void (*DirPostCallback)(const std::string &Dir),
|
|
void (*FileCallback)(const std::string &Dir)) {
|
|
// TODO(metzman): Implement ListFilesInDirRecursive via this function.
|
|
DirPreCallback(Dir);
|
|
|
|
DWORD DirAttrs = GetFileAttributesA(Dir.c_str());
|
|
if (!IsDir(DirAttrs)) return;
|
|
|
|
std::string TargetDir(Dir);
|
|
assert(!TargetDir.empty());
|
|
if (TargetDir.back() != '\\') TargetDir.push_back('\\');
|
|
TargetDir.push_back('*');
|
|
|
|
WIN32_FIND_DATAA FindInfo;
|
|
// Find the directory's first file.
|
|
HANDLE FindHandle = FindFirstFileA(TargetDir.c_str(), &FindInfo);
|
|
if (FindHandle == INVALID_HANDLE_VALUE) {
|
|
DWORD LastError = GetLastError();
|
|
if (LastError != ERROR_FILE_NOT_FOUND) {
|
|
// If the directory isn't empty, then something abnormal is going on.
|
|
Printf("FindFirstFileA failed for %s (Error code: %lu).\n", Dir.c_str(),
|
|
LastError);
|
|
}
|
|
return;
|
|
}
|
|
|
|
do {
|
|
std::string Path = DirPlusFile(Dir, FindInfo.cFileName);
|
|
DWORD PathAttrs = FindInfo.dwFileAttributes;
|
|
if (IsDir(PathAttrs)) {
|
|
// Is Path the current directory (".") or the parent ("..")?
|
|
if (strcmp(FindInfo.cFileName, ".") == 0 ||
|
|
strcmp(FindInfo.cFileName, "..") == 0)
|
|
continue;
|
|
IterateDirRecursive(Path, DirPreCallback, DirPostCallback, FileCallback);
|
|
} else if (PathAttrs != INVALID_FILE_ATTRIBUTES) {
|
|
FileCallback(Path);
|
|
}
|
|
} while (FindNextFileA(FindHandle, &FindInfo));
|
|
|
|
DWORD LastError = GetLastError();
|
|
if (LastError != ERROR_NO_MORE_FILES)
|
|
Printf("FindNextFileA failed for %s (Error code: %lu).\n", Dir.c_str(),
|
|
LastError);
|
|
|
|
FindClose(FindHandle);
|
|
DirPostCallback(Dir);
|
|
}
|
|
|
|
char GetSeparator() {
|
|
return '\\';
|
|
}
|
|
|
|
FILE* OpenFile(int Fd, const char* Mode) {
|
|
return _fdopen(Fd, Mode);
|
|
}
|
|
|
|
int CloseFile(int Fd) {
|
|
return _close(Fd);
|
|
}
|
|
|
|
int DuplicateFile(int Fd) {
|
|
return _dup(Fd);
|
|
}
|
|
|
|
void RemoveFile(const std::string &Path) {
|
|
_unlink(Path.c_str());
|
|
}
|
|
|
|
void RenameFile(const std::string &OldPath, const std::string &NewPath) {
|
|
rename(OldPath.c_str(), NewPath.c_str());
|
|
}
|
|
|
|
intptr_t GetHandleFromFd(int fd) {
|
|
return _get_osfhandle(fd);
|
|
}
|
|
|
|
bool IsSeparator(char C) {
|
|
return C == '\\' || C == '/';
|
|
}
|
|
|
|
// Parse disk designators, like "C:\". If Relative == true, also accepts: "C:".
|
|
// Returns number of characters considered if successful.
|
|
static size_t ParseDrive(const std::string &FileName, const size_t Offset,
|
|
bool Relative = true) {
|
|
if (Offset + 1 >= FileName.size() || FileName[Offset + 1] != ':')
|
|
return 0;
|
|
if (Offset + 2 >= FileName.size() || !IsSeparator(FileName[Offset + 2])) {
|
|
if (!Relative) // Accept relative path?
|
|
return 0;
|
|
else
|
|
return 2;
|
|
}
|
|
return 3;
|
|
}
|
|
|
|
// Parse a file name, like: SomeFile.txt
|
|
// Returns number of characters considered if successful.
|
|
static size_t ParseFileName(const std::string &FileName, const size_t Offset) {
|
|
size_t Pos = Offset;
|
|
const size_t End = FileName.size();
|
|
for(; Pos < End && !IsSeparator(FileName[Pos]); ++Pos)
|
|
;
|
|
return Pos - Offset;
|
|
}
|
|
|
|
// Parse a directory ending in separator, like: `SomeDir\`
|
|
// Returns number of characters considered if successful.
|
|
static size_t ParseDir(const std::string &FileName, const size_t Offset) {
|
|
size_t Pos = Offset;
|
|
const size_t End = FileName.size();
|
|
if (Pos >= End || IsSeparator(FileName[Pos]))
|
|
return 0;
|
|
for(; Pos < End && !IsSeparator(FileName[Pos]); ++Pos)
|
|
;
|
|
if (Pos >= End)
|
|
return 0;
|
|
++Pos; // Include separator.
|
|
return Pos - Offset;
|
|
}
|
|
|
|
// Parse a servername and share, like: `SomeServer\SomeShare\`
|
|
// Returns number of characters considered if successful.
|
|
static size_t ParseServerAndShare(const std::string &FileName,
|
|
const size_t Offset) {
|
|
size_t Pos = Offset, Res;
|
|
if (!(Res = ParseDir(FileName, Pos)))
|
|
return 0;
|
|
Pos += Res;
|
|
if (!(Res = ParseDir(FileName, Pos)))
|
|
return 0;
|
|
Pos += Res;
|
|
return Pos - Offset;
|
|
}
|
|
|
|
// Parse the given Ref string from the position Offset, to exactly match the given
|
|
// string Patt.
|
|
// Returns number of characters considered if successful.
|
|
static size_t ParseCustomString(const std::string &Ref, size_t Offset,
|
|
const char *Patt) {
|
|
size_t Len = strlen(Patt);
|
|
if (Offset + Len > Ref.size())
|
|
return 0;
|
|
return Ref.compare(Offset, Len, Patt) == 0 ? Len : 0;
|
|
}
|
|
|
|
// Parse a location, like:
|
|
// \\?\UNC\Server\Share\ \\?\C:\ \\Server\Share\ \ C:\ C:
|
|
// Returns number of characters considered if successful.
|
|
static size_t ParseLocation(const std::string &FileName) {
|
|
size_t Pos = 0, Res;
|
|
|
|
if ((Res = ParseCustomString(FileName, Pos, R"(\\?\)"))) {
|
|
Pos += Res;
|
|
if ((Res = ParseCustomString(FileName, Pos, R"(UNC\)"))) {
|
|
Pos += Res;
|
|
if ((Res = ParseServerAndShare(FileName, Pos)))
|
|
return Pos + Res;
|
|
return 0;
|
|
}
|
|
if ((Res = ParseDrive(FileName, Pos, false)))
|
|
return Pos + Res;
|
|
return 0;
|
|
}
|
|
|
|
if (Pos < FileName.size() && IsSeparator(FileName[Pos])) {
|
|
++Pos;
|
|
if (Pos < FileName.size() && IsSeparator(FileName[Pos])) {
|
|
++Pos;
|
|
if ((Res = ParseServerAndShare(FileName, Pos)))
|
|
return Pos + Res;
|
|
return 0;
|
|
}
|
|
return Pos;
|
|
}
|
|
|
|
if ((Res = ParseDrive(FileName, Pos)))
|
|
return Pos + Res;
|
|
|
|
return Pos;
|
|
}
|
|
|
|
std::string DirName(const std::string &FileName) {
|
|
size_t LocationLen = ParseLocation(FileName);
|
|
size_t DirLen = 0, Res;
|
|
while ((Res = ParseDir(FileName, LocationLen + DirLen)))
|
|
DirLen += Res;
|
|
size_t FileLen = ParseFileName(FileName, LocationLen + DirLen);
|
|
|
|
if (LocationLen + DirLen + FileLen != FileName.size()) {
|
|
Printf("DirName() failed for \"%s\", invalid path.\n", FileName.c_str());
|
|
exit(1);
|
|
}
|
|
|
|
if (DirLen) {
|
|
--DirLen; // Remove trailing separator.
|
|
if (!FileLen) { // Path ended in separator.
|
|
assert(DirLen);
|
|
// Remove file name from Dir.
|
|
while (DirLen && !IsSeparator(FileName[LocationLen + DirLen - 1]))
|
|
--DirLen;
|
|
if (DirLen) // Remove trailing separator.
|
|
--DirLen;
|
|
}
|
|
}
|
|
|
|
if (!LocationLen) { // Relative path.
|
|
if (!DirLen)
|
|
return ".";
|
|
return std::string(".\\").append(FileName, 0, DirLen);
|
|
}
|
|
|
|
return FileName.substr(0, LocationLen + DirLen);
|
|
}
|
|
|
|
std::string TmpDir() {
|
|
std::string Tmp;
|
|
Tmp.resize(MAX_PATH + 1);
|
|
DWORD Size = GetTempPathA(Tmp.size(), &Tmp[0]);
|
|
if (Size == 0) {
|
|
Printf("Couldn't get Tmp path.\n");
|
|
exit(1);
|
|
}
|
|
Tmp.resize(Size);
|
|
return Tmp;
|
|
}
|
|
|
|
bool IsInterestingCoverageFile(const std::string &FileName) {
|
|
if (FileName.find("Program Files") != std::string::npos)
|
|
return false;
|
|
if (FileName.find("compiler-rt\\lib\\") != std::string::npos)
|
|
return false; // sanitizer internal.
|
|
if (FileName == "<null>")
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
void RawPrint(const char *Str) {
|
|
_write(2, Str, strlen(Str));
|
|
}
|
|
|
|
void MkDir(const std::string &Path) {
|
|
if (CreateDirectoryA(Path.c_str(), nullptr)) return;
|
|
Printf("CreateDirectoryA failed for %s (Error code: %lu).\n", Path.c_str(),
|
|
GetLastError());
|
|
}
|
|
|
|
void RmDir(const std::string &Path) {
|
|
if (RemoveDirectoryA(Path.c_str())) return;
|
|
Printf("RemoveDirectoryA failed for %s (Error code: %lu).\n", Path.c_str(),
|
|
GetLastError());
|
|
}
|
|
|
|
const std::string &getDevNull() {
|
|
static const std::string devNull = "NUL";
|
|
return devNull;
|
|
}
|
|
|
|
} // namespace fuzzer
|
|
|
|
#endif // LIBFUZZER_WINDOWS
|