diff options
Diffstat (limited to 'xpcom/io/nsLocalFileWin.cpp')
| -rw-r--r-- | xpcom/io/nsLocalFileWin.cpp | 3683 |
1 files changed, 3683 insertions, 0 deletions
diff --git a/xpcom/io/nsLocalFileWin.cpp b/xpcom/io/nsLocalFileWin.cpp new file mode 100644 index 0000000000..fae11430e4 --- /dev/null +++ b/xpcom/io/nsLocalFileWin.cpp @@ -0,0 +1,3683 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "mozilla/ArrayUtils.h" +#include "mozilla/DebugOnly.h" +#include "mozilla/ProfilerLabels.h" +#include "mozilla/TextUtils.h" +#include "mozilla/UniquePtrExtensions.h" +#include "mozilla/Utf8.h" +#include "mozilla/WinHeaderOnlyUtils.h" + +#include "nsCOMPtr.h" + +#include "nsLocalFile.h" +#include "nsLocalFileCommon.h" +#include "nsIDirectoryEnumerator.h" +#include "nsNativeCharsetUtils.h" + +#include "nsSimpleEnumerator.h" +#include "prio.h" +#include "private/pprio.h" // To get PR_ImportFile +#include "nsHashKeys.h" + +#include "nsString.h" +#include "nsReadableUtils.h" + +#include <direct.h> +#include <fileapi.h> +#include <windows.h> +#include <shlwapi.h> +#include <aclapi.h> + +#include "shellapi.h" +#include "shlguid.h" + +#include <io.h> +#include <stdio.h> +#include <stdlib.h> +#include <mbstring.h> + +#include "prproces.h" +#include "prlink.h" + +#include "mozilla/FilePreferences.h" +#include "mozilla/Mutex.h" +#include "SpecialSystemDirectory.h" + +#include "nsTraceRefcnt.h" +#include "nsXPCOMCIDInternal.h" +#include "nsThreadUtils.h" +#include "nsXULAppAPI.h" +#include "nsIWindowMediator.h" + +#include "mozIDOMWindow.h" +#include "nsPIDOMWindow.h" +#include "nsIWidget.h" +#include "mozilla/ShellHeaderOnlyUtils.h" +#include "mozilla/WidgetUtils.h" +#include "WinUtils.h" + +using namespace mozilla; +using mozilla::FilePreferences::kDevicePathSpecifier; +using mozilla::FilePreferences::kPathSeparator; + +#define CHECK_mWorkingPath() \ + do { \ + if (mWorkingPath.IsEmpty()) return NS_ERROR_NOT_INITIALIZED; \ + } while (0) + +#ifndef FILE_ATTRIBUTE_NOT_CONTENT_INDEXED +# define FILE_ATTRIBUTE_NOT_CONTENT_INDEXED 0x00002000 +#endif + +#ifndef DRIVE_REMOTE +# define DRIVE_REMOTE 4 +#endif + +// MinGW does not know about this error, ensure we do. +#ifndef ERROR_DEVICE_HARDWARE_ERROR +# define ERROR_DEVICE_HARDWARE_ERROR 483L +#endif +#ifndef ERROR_CONTENT_BLOCKED +# define ERROR_CONTENT_BLOCKED 1296L +#endif + +namespace { + +nsresult NewLocalFile(const nsAString& aPath, bool aUseDOSDevicePathSyntax, + nsIFile** aResult) { + RefPtr<nsLocalFile> file = new nsLocalFile(); + + file->SetUseDOSDevicePathSyntax(aUseDOSDevicePathSyntax); + + if (!aPath.IsEmpty()) { + nsresult rv = file->InitWithPath(aPath); + if (NS_FAILED(rv)) { + return rv; + } + } + + file.forget(aResult); + return NS_OK; +} + +} // anonymous namespace + +static HWND GetMostRecentNavigatorHWND() { + nsresult rv; + nsCOMPtr<nsIWindowMediator> winMediator( + do_GetService(NS_WINDOWMEDIATOR_CONTRACTID, &rv)); + if (NS_FAILED(rv)) { + return nullptr; + } + + nsCOMPtr<mozIDOMWindowProxy> navWin; + rv = winMediator->GetMostRecentWindow(u"navigator:browser", + getter_AddRefs(navWin)); + if (NS_FAILED(rv) || !navWin) { + return nullptr; + } + + nsPIDOMWindowOuter* win = nsPIDOMWindowOuter::From(navWin); + nsCOMPtr<nsIWidget> widget = widget::WidgetUtils::DOMWindowToWidget(win); + if (!widget) { + return nullptr; + } + + return reinterpret_cast<HWND>(widget->GetNativeData(NS_NATIVE_WINDOW)); +} + +nsresult nsLocalFile::RevealFile(const nsString& aResolvedPath) { + MOZ_ASSERT(!NS_IsMainThread(), "Don't run on the main thread"); + + DWORD attributes = GetFileAttributesW(aResolvedPath.get()); + if (INVALID_FILE_ATTRIBUTES == attributes) { + return NS_ERROR_FILE_INVALID_PATH; + } + + HRESULT hr; + if (attributes & FILE_ATTRIBUTE_DIRECTORY) { + // We have a directory so we should open the directory itself. + LPITEMIDLIST dir = ILCreateFromPathW(aResolvedPath.get()); + if (!dir) { + return NS_ERROR_FAILURE; + } + + LPCITEMIDLIST selection[] = {dir}; + UINT count = ArrayLength(selection); + + // Perform the open of the directory. + hr = SHOpenFolderAndSelectItems(dir, count, selection, 0); + CoTaskMemFree(dir); + } else { + int32_t len = aResolvedPath.Length(); + // We don't currently handle UNC long paths of the form \\?\ anywhere so + // this should be fine. + if (len > MAX_PATH) { + return NS_ERROR_FILE_INVALID_PATH; + } + WCHAR parentDirectoryPath[MAX_PATH + 1] = {0}; + wcsncpy(parentDirectoryPath, aResolvedPath.get(), MAX_PATH); + PathRemoveFileSpecW(parentDirectoryPath); + + // We have a file so we should open the parent directory. + LPITEMIDLIST dir = ILCreateFromPathW(parentDirectoryPath); + if (!dir) { + return NS_ERROR_FAILURE; + } + + // Set the item in the directory to select to the file we want to reveal. + LPITEMIDLIST item = ILCreateFromPathW(aResolvedPath.get()); + if (!item) { + CoTaskMemFree(dir); + return NS_ERROR_FAILURE; + } + + LPCITEMIDLIST selection[] = {item}; + UINT count = ArrayLength(selection); + + // Perform the selection of the file. + hr = SHOpenFolderAndSelectItems(dir, count, selection, 0); + + CoTaskMemFree(dir); + CoTaskMemFree(item); + } + + return SUCCEEDED(hr) ? NS_OK : NS_ERROR_FAILURE; +} + +// static +void nsLocalFile::CheckForReservedFileName(nsString& aFileName) { + static const nsLiteralString forbiddenNames[] = { + u"COM1"_ns, u"COM2"_ns, u"COM3"_ns, u"COM4"_ns, u"COM5"_ns, u"COM6"_ns, + u"COM7"_ns, u"COM8"_ns, u"COM9"_ns, u"LPT1"_ns, u"LPT2"_ns, u"LPT3"_ns, + u"LPT4"_ns, u"LPT5"_ns, u"LPT6"_ns, u"LPT7"_ns, u"LPT8"_ns, u"LPT9"_ns, + u"CON"_ns, u"PRN"_ns, u"AUX"_ns, u"NUL"_ns, u"CLOCK$"_ns}; + + for (const nsLiteralString& forbiddenName : forbiddenNames) { + if (StringBeginsWith(aFileName, forbiddenName, + nsASCIICaseInsensitiveStringComparator)) { + // invalid name is either the entire string, or a prefix with a period + if (aFileName.Length() == forbiddenName.Length() || + aFileName.CharAt(forbiddenName.Length()) == char16_t('.')) { + aFileName.Truncate(); + } + } + } +} + +class nsDriveEnumerator : public nsSimpleEnumerator, + public nsIDirectoryEnumerator { + public: + explicit nsDriveEnumerator(bool aUseDOSDevicePathSyntax); + NS_DECL_ISUPPORTS_INHERITED + NS_DECL_NSISIMPLEENUMERATOR + NS_FORWARD_NSISIMPLEENUMERATORBASE(nsSimpleEnumerator::) + nsresult Init(); + + const nsID& DefaultInterface() override { return NS_GET_IID(nsIFile); } + + NS_IMETHOD GetNextFile(nsIFile** aResult) override { + bool hasMore = false; + nsresult rv = HasMoreElements(&hasMore); + if (NS_FAILED(rv) || !hasMore) { + return rv; + } + nsCOMPtr<nsISupports> next; + rv = GetNext(getter_AddRefs(next)); + NS_ENSURE_SUCCESS(rv, rv); + + nsCOMPtr<nsIFile> result = do_QueryInterface(next); + result.forget(aResult); + return NS_OK; + } + + NS_IMETHOD Close() override { return NS_OK; } + + private: + virtual ~nsDriveEnumerator(); + + /* mDrives stores the null-separated drive names. + * Init sets them. + * HasMoreElements checks mStartOfCurrentDrive. + * GetNext advances mStartOfCurrentDrive. + */ + nsString mDrives; + nsAString::const_iterator mStartOfCurrentDrive; + nsAString::const_iterator mEndOfDrivesString; + const bool mUseDOSDevicePathSyntax; +}; + +//----------------------------------------------------------------------------- +// static helper functions +//----------------------------------------------------------------------------- + +/** + * While not comprehensive, this will map many common Windows error codes to a + * corresponding nsresult. If an unmapped error is encountered, the hex error + * code will be logged to stderr. Error codes, names, and descriptions can be + * found at the following MSDN page: + * https://docs.microsoft.com/en-us/windows/win32/debug/system-error-codes + * + * \note When adding more mappings here, it must be checked if there's code that + * depends on the current generic NS_ERROR_MODULE_WIN32 mapping for such error + * codes. + */ +static nsresult ConvertWinError(DWORD aWinErr) { + nsresult rv; + + switch (aWinErr) { + case ERROR_FILE_NOT_FOUND: + [[fallthrough]]; // to NS_ERROR_FILE_NOT_FOUND + case ERROR_PATH_NOT_FOUND: + [[fallthrough]]; // to NS_ERROR_FILE_NOT_FOUND + case ERROR_INVALID_DRIVE: + rv = NS_ERROR_FILE_NOT_FOUND; + break; + case ERROR_ACCESS_DENIED: + [[fallthrough]]; // to NS_ERROR_FILE_ACCESS_DENIED + case ERROR_NOT_SAME_DEVICE: + [[fallthrough]]; // to NS_ERROR_FILE_ACCESS_DENIED + case ERROR_CANNOT_MAKE: + [[fallthrough]]; // to NS_ERROR_FILE_ACCESS_DENIED + case ERROR_CONTENT_BLOCKED: + rv = NS_ERROR_FILE_ACCESS_DENIED; + break; + case ERROR_SHARING_VIOLATION: // CreateFile without sharing flags + [[fallthrough]]; // to NS_ERROR_FILE_IS_LOCKED + case ERROR_LOCK_VIOLATION: // LockFile, LockFileEx + rv = NS_ERROR_FILE_IS_LOCKED; + break; + case ERROR_NOT_ENOUGH_MEMORY: + [[fallthrough]]; // to NS_ERROR_OUT_OF_MEMORY + case ERROR_NO_SYSTEM_RESOURCES: + rv = NS_ERROR_OUT_OF_MEMORY; + break; + case ERROR_DIR_NOT_EMPTY: + [[fallthrough]]; // to NS_ERROR_FILE_DIR_NOT_EMPTY + case ERROR_CURRENT_DIRECTORY: + rv = NS_ERROR_FILE_DIR_NOT_EMPTY; + break; + case ERROR_WRITE_PROTECT: + rv = NS_ERROR_FILE_READ_ONLY; + break; + case ERROR_HANDLE_DISK_FULL: + [[fallthrough]]; // to NS_ERROR_FILE_NO_DEVICE_SPACE + case ERROR_DISK_FULL: + rv = NS_ERROR_FILE_NO_DEVICE_SPACE; + break; + case ERROR_FILE_EXISTS: + [[fallthrough]]; // to NS_ERROR_FILE_ALREADY_EXISTS + case ERROR_ALREADY_EXISTS: + rv = NS_ERROR_FILE_ALREADY_EXISTS; + break; + case ERROR_FILENAME_EXCED_RANGE: + rv = NS_ERROR_FILE_NAME_TOO_LONG; + break; + case ERROR_DIRECTORY: + rv = NS_ERROR_FILE_NOT_DIRECTORY; + break; + case ERROR_FILE_CORRUPT: + [[fallthrough]]; // to NS_ERROR_FILE_FS_CORRUPTED + case ERROR_DISK_CORRUPT: + rv = NS_ERROR_FILE_FS_CORRUPTED; + break; + case ERROR_DEVICE_HARDWARE_ERROR: + [[fallthrough]]; // to NS_ERROR_FILE_DEVICE_FAILURE + case ERROR_DEVICE_NOT_CONNECTED: + [[fallthrough]]; // to NS_ERROR_FILE_DEVICE_FAILURE + case ERROR_DEV_NOT_EXIST: + [[fallthrough]]; // to NS_ERROR_FILE_DEVICE_FAILURE + case ERROR_IO_DEVICE: + rv = NS_ERROR_FILE_DEVICE_FAILURE; + break; + case ERROR_NOT_READY: + rv = NS_ERROR_FILE_DEVICE_TEMPORARY_FAILURE; + break; + case ERROR_INVALID_NAME: + rv = NS_ERROR_FILE_INVALID_PATH; + break; + case ERROR_INVALID_BLOCK: + [[fallthrough]]; // to NS_ERROR_FILE_INVALID_HANDLE + case ERROR_INVALID_HANDLE: + [[fallthrough]]; // to NS_ERROR_FILE_INVALID_HANDLE + case ERROR_ARENA_TRASHED: + rv = NS_ERROR_FILE_INVALID_HANDLE; + break; + case 0: + rv = NS_OK; + break; + default: + printf_stderr( + "ConvertWinError received an unrecognized WinError: 0x%" PRIx32 "\n", + static_cast<uint32_t>(aWinErr)); + MOZ_ASSERT((aWinErr & 0xFFFF) == aWinErr); + rv = NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_WIN32, aWinErr & 0xFFFF); + break; + } + return rv; +} + +// Check whether a path is a volume root. Expects paths to be \-terminated. +static bool IsRootPath(const nsAString& aPath) { + // Easy cases first: + if (aPath.Last() != L'\\') { + return false; + } + if (StringEndsWith(aPath, u":\\"_ns)) { + return true; + } + + nsAString::const_iterator begin, end; + aPath.BeginReading(begin); + aPath.EndReading(end); + // We know we've got a trailing slash, skip that: + end--; + // Find the next last slash: + if (RFindInReadable(u"\\"_ns, begin, end)) { + // Reset iterator: + aPath.EndReading(end); + end--; + auto lastSegment = Substring(++begin, end); + if (lastSegment.IsEmpty()) { + return false; + } + + // Check if we end with e.g. "c$", a drive letter in UNC or network shares + if (lastSegment.Last() == L'$' && lastSegment.Length() == 2 && + IsAsciiAlpha(lastSegment.First())) { + return true; + } + // Volume GUID paths: + if (StringBeginsWith(lastSegment, u"Volume{"_ns) && + lastSegment.Last() == L'}') { + return true; + } + } + return false; +} + +static auto kSpecialNTFSFilesInRoot = { + u"$MFT"_ns, u"$MFTMirr"_ns, u"$LogFile"_ns, u"$Volume"_ns, + u"$AttrDef"_ns, u"$Bitmap"_ns, u"$Boot"_ns, u"$BadClus"_ns, + u"$Secure"_ns, u"$UpCase"_ns, u"$Extend"_ns}; +static bool IsSpecialNTFSPath(const nsAString& aFilePath) { + nsAString::const_iterator begin, end; + aFilePath.BeginReading(begin); + aFilePath.EndReading(end); + auto iter = begin; + // Early exit if there's no '$' (common case) + if (!FindCharInReadable(L'$', iter, end)) { + return false; + } + + iter = begin; + // Any use of ':$' is illegal in filenames anyway; while we support some + // ADS stuff (ie ":Zone.Identifier"), none of them use the ':$' syntax: + if (FindInReadable(u":$"_ns, iter, end)) { + return true; + } + + auto normalized = mozilla::MakeUniqueFallible<wchar_t[]>(MAX_PATH); + if (!normalized) { + return true; + } + auto flatPath = PromiseFlatString(aFilePath); + auto fullPathRV = + GetFullPathNameW(flatPath.get(), MAX_PATH - 1, normalized.get(), nullptr); + if (fullPathRV == 0 || fullPathRV > MAX_PATH - 1) { + return false; + } + + nsString normalizedPath(normalized.get()); + normalizedPath.BeginReading(begin); + normalizedPath.EndReading(end); + iter = begin; + auto kDelimiters = u"\\:"_ns; + while (iter != end && FindCharInReadable(L'$', iter, end)) { + for (auto str : kSpecialNTFSFilesInRoot) { + if (StringBeginsWith(Substring(iter, end), str, + nsCaseInsensitiveStringComparator)) { + // If we're enclosed by separators or the beginning/end of the string, + // this is one of the special files. Check if we're on a volume root. + auto iterCopy = iter; + iterCopy.advance(str.Length()); + // We check for both \ and : here because the filename could be + // followd by a colon and a stream name/type, which shouldn't affect + // our check: + if (iterCopy == end || kDelimiters.Contains(*iterCopy)) { + iterCopy = iter; + // At the start of this path component, we don't need to care about + // colons: we would have caught those in the check for `:$` above. + if (iterCopy == begin || *(--iterCopy) == L'\\') { + return IsRootPath(Substring(begin, iter)); + } + } + } + } + iter++; + } + + return false; +} + +//----------------------------------------------------------------------------- +// We need the following three definitions to make |OpenFile| convert a file +// handle to an NSPR file descriptor correctly when |O_APPEND| flag is +// specified. It is defined in a private header of NSPR (primpl.h) we can't +// include. As a temporary workaround until we decide how to extend +// |PR_ImportFile|, we define it here. Currently, |_PR_HAVE_PEEK_BUFFER| +// and |PR_STRICT_ADDR_LEN| are not defined for the 'w95'-dependent portion +// of NSPR so that fields of |PRFilePrivate| #ifdef'd by them are not copied. +// Similarly, |_MDFileDesc| is taken from nsprpub/pr/include/md/_win95.h. +// In an unlikely case we switch to 'NT'-dependent NSPR AND this temporary +// workaround last beyond the switch, |PRFilePrivate| and |_MDFileDesc| +// need to be changed to match the definitions for WinNT. +//----------------------------------------------------------------------------- +typedef enum { + _PR_TRI_TRUE = 1, + _PR_TRI_FALSE = 0, + _PR_TRI_UNKNOWN = -1 +} _PRTriStateBool; + +struct _MDFileDesc { + PROsfd osfd; +}; + +struct PRFilePrivate { + int32_t state; + bool nonblocking; + _PRTriStateBool inheritable; + PRFileDesc* next; + int lockCount; /* 0: not locked + * -1: a native lockfile call is in progress + * > 0: # times the file is locked */ + bool appendMode; + _MDFileDesc md; +}; + +//----------------------------------------------------------------------------- +// Six static methods defined below (OpenFile, FileTimeToPRTime, GetFileInfo, +// OpenDir, CloseDir, ReadDir) should go away once the corresponding +// UTF-16 APIs are implemented on all the supported platforms (or at least +// Windows 9x/ME) in NSPR. Currently, they're only implemented on +// Windows NT4 or later. (bug 330665) +//----------------------------------------------------------------------------- + +// copied from nsprpub/pr/src/{io/prfile.c | md/windows/w95io.c} : +// PR_Open and _PR_MD_OPEN +nsresult OpenFile(const nsString& aName, int aOsflags, int aMode, + bool aShareDelete, PRFileDesc** aFd) { + int32_t access = 0; + + int32_t shareMode = FILE_SHARE_READ | FILE_SHARE_WRITE; + int32_t disposition = 0; + int32_t attributes = 0; + + if (aShareDelete) { + shareMode |= FILE_SHARE_DELETE; + } + + if (aOsflags & PR_SYNC) { + attributes = FILE_FLAG_WRITE_THROUGH; + } + if (aOsflags & PR_RDONLY || aOsflags & PR_RDWR) { + access |= GENERIC_READ; + } + if (aOsflags & PR_WRONLY || aOsflags & PR_RDWR) { + access |= GENERIC_WRITE; + } + + if (aOsflags & PR_CREATE_FILE && aOsflags & PR_EXCL) { + disposition = CREATE_NEW; + } else if (aOsflags & PR_CREATE_FILE) { + if (aOsflags & PR_TRUNCATE) { + disposition = CREATE_ALWAYS; + } else { + disposition = OPEN_ALWAYS; + } + } else { + if (aOsflags & PR_TRUNCATE) { + disposition = TRUNCATE_EXISTING; + } else { + disposition = OPEN_EXISTING; + } + } + + if (aOsflags & nsIFile::DELETE_ON_CLOSE) { + attributes |= FILE_FLAG_DELETE_ON_CLOSE; + } + + if (aOsflags & nsIFile::OS_READAHEAD) { + attributes |= FILE_FLAG_SEQUENTIAL_SCAN; + } + + // If no write permissions are requested, and if we are possibly creating + // the file, then set the new file as read only. + // The flag has no effect if we happen to open the file. + if (!(aMode & (PR_IWUSR | PR_IWGRP | PR_IWOTH)) && + disposition != OPEN_EXISTING) { + attributes |= FILE_ATTRIBUTE_READONLY; + } + + HANDLE file = ::CreateFileW(aName.get(), access, shareMode, nullptr, + disposition, attributes, nullptr); + + if (file == INVALID_HANDLE_VALUE) { + *aFd = nullptr; + return ConvertWinError(GetLastError()); + } + + *aFd = PR_ImportFile((PROsfd)file); + if (*aFd) { + // On Windows, _PR_HAVE_O_APPEND is not defined so that we have to + // add it manually. (see |PR_Open| in nsprpub/pr/src/io/prfile.c) + (*aFd)->secret->appendMode = (PR_APPEND & aOsflags) ? true : false; + return NS_OK; + } + + nsresult rv = NS_ErrorAccordingToNSPR(); + + CloseHandle(file); + + return rv; +} + +// copied from nsprpub/pr/src/{io/prfile.c | md/windows/w95io.c} : +// PR_FileTimeToPRTime and _PR_FileTimeToPRTime +static void FileTimeToPRTime(const FILETIME* aFiletime, PRTime* aPrtm) { +#ifdef __GNUC__ + const PRTime _pr_filetime_offset = 116444736000000000LL; +#else + const PRTime _pr_filetime_offset = 116444736000000000i64; +#endif + + MOZ_ASSERT(sizeof(FILETIME) == sizeof(PRTime)); + ::CopyMemory(aPrtm, aFiletime, sizeof(PRTime)); +#ifdef __GNUC__ + *aPrtm = (*aPrtm - _pr_filetime_offset) / 10LL; +#else + *aPrtm = (*aPrtm - _pr_filetime_offset) / 10i64; +#endif +} + +// copied from nsprpub/pr/src/{io/prfile.c | md/windows/w95io.c} with some +// changes : PR_GetFileInfo64, _PR_MD_GETFILEINFO64 +static nsresult GetFileInfo(const nsString& aName, + nsLocalFile::FileInfo* aInfo) { + if (aName.IsEmpty()) { + return NS_ERROR_INVALID_ARG; + } + + // Checking u"?*" for the file path excluding the kDevicePathSpecifier. + // ToDo: Check if checking "?" for the file path is still needed. + const int32_t offset = StringBeginsWith(aName, kDevicePathSpecifier) + ? kDevicePathSpecifier.Length() + : 0; + + if (aName.FindCharInSet(u"?*", offset) != kNotFound) { + return NS_ERROR_INVALID_ARG; + } + + WIN32_FILE_ATTRIBUTE_DATA fileData; + if (!::GetFileAttributesExW(aName.get(), GetFileExInfoStandard, &fileData)) { + return ConvertWinError(GetLastError()); + } + + if (fileData.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) { + aInfo->type = PR_FILE_OTHER; + } else if (fileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) { + aInfo->type = PR_FILE_DIRECTORY; + } else { + aInfo->type = PR_FILE_FILE; + } + + aInfo->size = fileData.nFileSizeHigh; + aInfo->size = (aInfo->size << 32) + fileData.nFileSizeLow; + + if (0 == fileData.ftCreationTime.dwLowDateTime && + 0 == fileData.ftCreationTime.dwHighDateTime) { + aInfo->creationTime = aInfo->modifyTime; + } else { + FileTimeToPRTime(&fileData.ftCreationTime, &aInfo->creationTime); + } + + FileTimeToPRTime(&fileData.ftLastAccessTime, &aInfo->accessTime); + FileTimeToPRTime(&fileData.ftLastWriteTime, &aInfo->modifyTime); + + return NS_OK; +} + +struct nsDir { + HANDLE handle; + WIN32_FIND_DATAW data; + bool firstEntry; +}; + +static nsresult OpenDir(const nsString& aName, nsDir** aDir) { + if (NS_WARN_IF(!aDir)) { + return NS_ERROR_INVALID_ARG; + } + + *aDir = nullptr; + + nsDir* d = new nsDir(); + nsAutoString filename(aName); + + // If |aName| ends in a slash or backslash, do not append another backslash. + if (filename.Last() == L'/' || filename.Last() == L'\\') { + filename.Append('*'); + } else { + filename.AppendLiteral("\\*"); + } + + filename.ReplaceChar(L'/', L'\\'); + + // FindFirstFileW Will have a last error of ERROR_DIRECTORY if + // <file_path>\* is passed in. If <unknown_path>\* is passed in then + // ERROR_PATH_NOT_FOUND will be the last error. + d->handle = ::FindFirstFileW(filename.get(), &(d->data)); + + if (d->handle == INVALID_HANDLE_VALUE) { + delete d; + return ConvertWinError(GetLastError()); + } + d->firstEntry = true; + + *aDir = d; + return NS_OK; +} + +static nsresult ReadDir(nsDir* aDir, PRDirFlags aFlags, nsString& aName) { + aName.Truncate(); + if (NS_WARN_IF(!aDir)) { + return NS_ERROR_INVALID_ARG; + } + + while (1) { + BOOL rv; + if (aDir->firstEntry) { + aDir->firstEntry = false; + rv = 1; + } else { + rv = ::FindNextFileW(aDir->handle, &(aDir->data)); + } + + if (rv == 0) { + break; + } + + const wchar_t* fileName; + fileName = (aDir)->data.cFileName; + + if ((aFlags & PR_SKIP_DOT) && (fileName[0] == L'.') && + (fileName[1] == L'\0')) { + continue; + } + if ((aFlags & PR_SKIP_DOT_DOT) && (fileName[0] == L'.') && + (fileName[1] == L'.') && (fileName[2] == L'\0')) { + continue; + } + + DWORD attrib = aDir->data.dwFileAttributes; + if ((aFlags & PR_SKIP_HIDDEN) && (attrib & FILE_ATTRIBUTE_HIDDEN)) { + continue; + } + + aName = fileName; + return NS_OK; + } + + DWORD err = GetLastError(); + return err == ERROR_NO_MORE_FILES ? NS_OK : ConvertWinError(err); +} + +static nsresult CloseDir(nsDir*& aDir) { + if (NS_WARN_IF(!aDir)) { + return NS_ERROR_INVALID_ARG; + } + + BOOL isOk = FindClose(aDir->handle); + delete aDir; + aDir = nullptr; + return isOk ? NS_OK : ConvertWinError(GetLastError()); +} + +//----------------------------------------------------------------------------- +// nsDirEnumerator +//----------------------------------------------------------------------------- + +class nsDirEnumerator final : public nsSimpleEnumerator, + public nsIDirectoryEnumerator { + private: + ~nsDirEnumerator() { Close(); } + + public: + NS_DECL_ISUPPORTS_INHERITED + + NS_FORWARD_NSISIMPLEENUMERATORBASE(nsSimpleEnumerator::) + + nsDirEnumerator() : mDir(nullptr) {} + + const nsID& DefaultInterface() override { return NS_GET_IID(nsIFile); } + + nsresult Init(nsIFile* aParent) { + nsAutoString filepath; + aParent->GetTarget(filepath); + + if (filepath.IsEmpty()) { + aParent->GetPath(filepath); + } + + if (filepath.IsEmpty()) { + return NS_ERROR_UNEXPECTED; + } + + // IsDirectory is not needed here because OpenDir will return + // NS_ERROR_FILE_NOT_DIRECTORY if the passed in path is a file. + nsresult rv = OpenDir(filepath, &mDir); + if (NS_FAILED(rv)) { + return rv; + } + + mParent = aParent; + return NS_OK; + } + + NS_IMETHOD HasMoreElements(bool* aResult) override { + nsresult rv; + if (!mNext && mDir) { + nsString name; + rv = ReadDir(mDir, PR_SKIP_BOTH, name); + if (NS_FAILED(rv)) { + return rv; + } + if (name.IsEmpty()) { + // end of dir entries + rv = CloseDir(mDir); + if (NS_FAILED(rv)) { + return rv; + } + + *aResult = false; + return NS_OK; + } + + nsCOMPtr<nsIFile> file; + rv = mParent->Clone(getter_AddRefs(file)); + if (NS_FAILED(rv)) { + return rv; + } + + rv = file->Append(name); + if (NS_FAILED(rv)) { + return rv; + } + + mNext = file.forget(); + } + *aResult = mNext != nullptr; + if (!*aResult) { + Close(); + } + return NS_OK; + } + + NS_IMETHOD GetNext(nsISupports** aResult) override { + nsresult rv; + bool hasMore; + rv = HasMoreElements(&hasMore); + if (NS_FAILED(rv)) { + return rv; + } + if (!hasMore) { + return NS_ERROR_FAILURE; + } + + mNext.forget(aResult); + return NS_OK; + } + + NS_IMETHOD GetNextFile(nsIFile** aResult) override { + *aResult = nullptr; + bool hasMore = false; + nsresult rv = HasMoreElements(&hasMore); + if (NS_FAILED(rv) || !hasMore) { + return rv; + } + mNext.forget(aResult); + return NS_OK; + } + + NS_IMETHOD Close() override { + if (mDir) { + nsresult rv = CloseDir(mDir); + NS_ASSERTION(NS_SUCCEEDED(rv), "close failed"); + if (NS_FAILED(rv)) { + return NS_ERROR_FAILURE; + } + } + return NS_OK; + } + + protected: + nsDir* mDir; + nsCOMPtr<nsIFile> mParent; + nsCOMPtr<nsIFile> mNext; +}; + +NS_IMPL_ISUPPORTS_INHERITED(nsDirEnumerator, nsSimpleEnumerator, + nsIDirectoryEnumerator) + +//----------------------------------------------------------------------------- +// nsLocalFile <public> +//----------------------------------------------------------------------------- + +nsLocalFile::nsLocalFile() + : mDirty(true), mResolveDirty(true), mUseDOSDevicePathSyntax(false) {} + +nsLocalFile::nsLocalFile(const nsAString& aFilePath) + : mUseDOSDevicePathSyntax(false) { + InitWithPath(aFilePath); +} + +nsresult nsLocalFile::nsLocalFileConstructor(const nsIID& aIID, + void** aInstancePtr) { + if (NS_WARN_IF(!aInstancePtr)) { + return NS_ERROR_INVALID_ARG; + } + + nsLocalFile* inst = new nsLocalFile(); + nsresult rv = inst->QueryInterface(aIID, aInstancePtr); + if (NS_FAILED(rv)) { + delete inst; + return rv; + } + return NS_OK; +} + +//----------------------------------------------------------------------------- +// nsLocalFile::nsISupports +//----------------------------------------------------------------------------- + +NS_IMPL_ISUPPORTS(nsLocalFile, nsIFile, nsILocalFileWin) + +//----------------------------------------------------------------------------- +// nsLocalFile <private> +//----------------------------------------------------------------------------- + +nsLocalFile::nsLocalFile(const nsLocalFile& aOther) + : mDirty(true), + mResolveDirty(true), + mUseDOSDevicePathSyntax(aOther.mUseDOSDevicePathSyntax), + mWorkingPath(aOther.mWorkingPath) {} + +nsresult nsLocalFile::ResolveSymlink() { + std::wstring workingPath(mWorkingPath.Data()); + if (!widget::WinUtils::ResolveJunctionPointsAndSymLinks(workingPath)) { + return NS_ERROR_FAILURE; + } + mResolvedPath.Assign(workingPath.c_str(), workingPath.length()); + return NS_OK; +} + +// Resolve any shortcuts and stat the resolved path. After a successful return +// the path is guaranteed valid and the members of mFileInfo can be used. +nsresult nsLocalFile::ResolveAndStat() { + // if we aren't dirty then we are already done + if (!mDirty) { + return NS_OK; + } + + AUTO_PROFILER_LABEL("nsLocalFile::ResolveAndStat", OTHER); + // we can't resolve/stat anything that isn't a valid NSPR addressable path + if (mWorkingPath.IsEmpty()) { + return NS_ERROR_FILE_INVALID_PATH; + } + + // this is usually correct + mResolvedPath.Assign(mWorkingPath); + + // Make sure root paths have a trailing slash. + nsAutoString nsprPath(mWorkingPath); + if (mWorkingPath.Length() == 2 && mWorkingPath.CharAt(1) == u':') { + nsprPath.Append('\\'); + } + + // first we will see if the working path exists. If it doesn't then + // there is nothing more that can be done + nsresult rv = GetFileInfo(nsprPath, &mFileInfo); + if (NS_FAILED(rv)) { + return rv; + } + + if (mFileInfo.type != PR_FILE_OTHER) { + mResolveDirty = false; + mDirty = false; + return NS_OK; + } + + // OTHER from GetFileInfo currently means a symlink + rv = ResolveSymlink(); + // Even if it fails we need to have the resolved path equal to working path + // for those functions that always use the resolved path. + if (NS_FAILED(rv)) { + mResolvedPath.Assign(mWorkingPath); + return rv; + } + + mResolveDirty = false; + // get the details of the resolved path + rv = GetFileInfo(mResolvedPath, &mFileInfo); + if (NS_FAILED(rv)) { + return rv; + } + + mDirty = false; + return NS_OK; +} + +/** + * Fills the mResolvedPath member variable with the file or symlink target + * if follow symlinks is on. This is a copy of the Resolve parts from + * ResolveAndStat. ResolveAndStat is much slower though because of the stat. + * + * @return NS_OK on success. + */ +nsresult nsLocalFile::Resolve() { + // if we aren't dirty then we are already done + if (!mResolveDirty) { + return NS_OK; + } + + // we can't resolve/stat anything that isn't a valid NSPR addressable path + if (mWorkingPath.IsEmpty()) { + return NS_ERROR_FILE_INVALID_PATH; + } + + // this is usually correct + mResolvedPath.Assign(mWorkingPath); + + // TODO: Implement symlink support + + mResolveDirty = false; + return NS_OK; +} + +//----------------------------------------------------------------------------- +// nsLocalFile::nsIFile +//----------------------------------------------------------------------------- + +NS_IMETHODIMP +nsLocalFile::Clone(nsIFile** aFile) { + // Just copy-construct ourselves + RefPtr<nsLocalFile> file = new nsLocalFile(*this); + file.forget(aFile); + + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::InitWithFile(nsIFile* aFile) { + if (NS_WARN_IF(!aFile)) { + return NS_ERROR_INVALID_ARG; + } + + nsAutoString path; + aFile->GetPath(path); + if (path.IsEmpty()) { + return NS_ERROR_INVALID_ARG; + } + return InitWithPath(path); +} + +NS_IMETHODIMP +nsLocalFile::InitWithPath(const nsAString& aFilePath) { + MakeDirty(); + + nsAString::const_iterator begin, end; + aFilePath.BeginReading(begin); + aFilePath.EndReading(end); + + // input string must not be empty + if (begin == end) { + return NS_ERROR_FAILURE; + } + + char16_t firstChar = *begin; + char16_t secondChar = *(++begin); + + // just do a sanity check. if it has any forward slashes, it is not a Native + // path on windows. Also, it must have a colon at after the first char. + if (FindCharInReadable(L'/', begin, end)) { + return NS_ERROR_FILE_UNRECOGNIZED_PATH; + } + + if (FilePreferences::IsBlockedUNCPath(aFilePath)) { + return NS_ERROR_FILE_ACCESS_DENIED; + } + + if (secondChar != L':' && (secondChar != L'\\' || firstChar != L'\\')) { + return NS_ERROR_FILE_UNRECOGNIZED_PATH; + } + + if (secondChar == L':') { + // Make sure we have a valid drive, later code assumes the drive letter + // is a single char a-z or A-Z. + if (MozPathGetDriveNumber<wchar_t>(aFilePath.Data()) == -1) { + return NS_ERROR_FILE_UNRECOGNIZED_PATH; + } + } + + if (IsSpecialNTFSPath(aFilePath)) { + return NS_ERROR_FILE_UNRECOGNIZED_PATH; + } + + mWorkingPath = aFilePath; + // kill any trailing '\' + if (mWorkingPath.Last() == L'\\') { + mWorkingPath.Truncate(mWorkingPath.Length() - 1); + } + + // Bug 1626514: make sure that we don't end up with multiple prefixes. + + // Prepend the "\\?\" prefix if the useDOSDevicePathSyntax is set and the path + // starts with a disk designator and backslash. + if (mUseDOSDevicePathSyntax && + FilePreferences::StartsWithDiskDesignatorAndBackslash(mWorkingPath)) { + mWorkingPath = kDevicePathSpecifier + mWorkingPath; + } + + return NS_OK; +} + +// Strip a handler command string of its quotes and parameters. +static void CleanupHandlerPath(nsString& aPath) { + // Example command strings passed into this routine: + + // 1) C:\Program Files\Company\some.exe -foo -bar + // 2) C:\Program Files\Company\some.dll + // 3) C:\Windows\some.dll,-foo -bar + // 4) C:\Windows\some.cpl,-foo -bar + + int32_t lastCommaPos = aPath.RFindChar(','); + if (lastCommaPos != kNotFound) aPath.Truncate(lastCommaPos); + + aPath.Append(' '); + + // case insensitive + int32_t index = aPath.LowerCaseFindASCII(".exe "); + if (index == kNotFound) index = aPath.LowerCaseFindASCII(".dll "); + if (index == kNotFound) index = aPath.LowerCaseFindASCII(".cpl "); + + if (index != kNotFound) aPath.Truncate(index + 4); + aPath.Trim(" ", true, true); +} + +// Strip the windows host process bootstrap executable rundll32.exe +// from a handler's command string if it exists. +static void StripRundll32(nsString& aCommandString) { + // Example rundll formats: + // C:\Windows\System32\rundll32.exe "path to dll" + // rundll32.exe "path to dll" + // C:\Windows\System32\rundll32.exe "path to dll", var var + // rundll32.exe "path to dll", var var + + constexpr auto rundllSegment = "rundll32.exe "_ns; + constexpr auto rundllSegmentShort = "rundll32 "_ns; + + // case insensitive + int32_t strLen = rundllSegment.Length(); + int32_t index = aCommandString.LowerCaseFindASCII(rundllSegment); + if (index == kNotFound) { + strLen = rundllSegmentShort.Length(); + index = aCommandString.LowerCaseFindASCII(rundllSegmentShort); + } + + if (index != kNotFound) { + uint32_t rundllSegmentLength = index + strLen; + aCommandString.Cut(0, rundllSegmentLength); + } +} + +// Returns the fully qualified path to an application handler based on +// a parameterized command string. Note this routine should not be used +// to launch the associated application as it strips parameters and +// rundll.exe from the string. Designed for retrieving display information +// on a particular handler. +/* static */ +bool nsLocalFile::CleanupCmdHandlerPath(nsAString& aCommandHandler) { + nsAutoString handlerCommand(aCommandHandler); + + // Straight command path: + // + // %SystemRoot%\system32\NOTEPAD.EXE var + // "C:\Program Files\iTunes\iTunes.exe" var var + // C:\Program Files\iTunes\iTunes.exe var var + // + // Example rundll handlers: + // + // rundll32.exe "%ProgramFiles%\Win...ery\PhotoViewer.dll", var var + // rundll32.exe "%ProgramFiles%\Windows Photo Gallery\PhotoViewer.dll" + // C:\Windows\System32\rundll32.exe "path to dll", var var + // %SystemRoot%\System32\rundll32.exe "%ProgramFiles%\Win...ery\Photo + // Viewer.dll", var var + + // Expand environment variables so we have full path strings. + uint32_t bufLength = + ::ExpandEnvironmentStringsW(handlerCommand.get(), nullptr, 0); + if (bufLength == 0) // Error + return false; + + auto destination = mozilla::MakeUniqueFallible<wchar_t[]>(bufLength); + if (!destination) return false; + if (!::ExpandEnvironmentStringsW(handlerCommand.get(), destination.get(), + bufLength)) + return false; + + handlerCommand.Assign(destination.get()); + + // Remove quotes around paths + handlerCommand.StripChars(u"\""); + + // Strip windows host process bootstrap so we can get to the actual + // handler. + StripRundll32(handlerCommand); + + // Trim any command parameters so that we have a native path we can + // initialize a local file with. + CleanupHandlerPath(handlerCommand); + + aCommandHandler.Assign(handlerCommand); + return true; +} + +NS_IMETHODIMP +nsLocalFile::InitWithCommandLine(const nsAString& aCommandLine) { + nsAutoString commandLine(aCommandLine); + if (!CleanupCmdHandlerPath(commandLine)) { + return NS_ERROR_FILE_UNRECOGNIZED_PATH; + } + return InitWithPath(commandLine); +} + +NS_IMETHODIMP +nsLocalFile::OpenNSPRFileDesc(int32_t aFlags, int32_t aMode, + PRFileDesc** aResult) { + nsresult rv = OpenNSPRFileDescMaybeShareDelete(aFlags, aMode, false, aResult); + if (NS_FAILED(rv)) { + return rv; + } + + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::OpenANSIFileDesc(const char* aMode, FILE** aResult) { + *aResult = _wfopen(mWorkingPath.get(), NS_ConvertASCIItoUTF16(aMode).get()); + if (*aResult) { + return NS_OK; + } + + return NS_ERROR_FAILURE; +} + +static nsresult do_create(nsIFile* aFile, const nsString& aPath, + uint32_t aAttributes) { + PRFileDesc* file; + nsresult rv = + OpenFile(aPath, PR_RDONLY | PR_CREATE_FILE | PR_APPEND | PR_EXCL, + aAttributes, false, &file); + if (file) { + PR_Close(file); + } + + if (rv == NS_ERROR_FILE_ACCESS_DENIED) { + // need to return already-exists for directories (bug 452217) + bool isdir; + if (NS_SUCCEEDED(aFile->IsDirectory(&isdir)) && isdir) { + rv = NS_ERROR_FILE_ALREADY_EXISTS; + } + } + return rv; +} + +static nsresult do_mkdir(nsIFile*, const nsString& aPath, uint32_t) { + if (!::CreateDirectoryW(aPath.get(), nullptr)) { + return ConvertWinError(GetLastError()); + } + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::Create(uint32_t aType, uint32_t aAttributes, bool aSkipAncestors) { + if (aType != NORMAL_FILE_TYPE && aType != DIRECTORY_TYPE) { + return NS_ERROR_FILE_UNKNOWN_TYPE; + } + + auto* createFunc = (aType == NORMAL_FILE_TYPE ? do_create : do_mkdir); + + nsresult rv = createFunc(this, mWorkingPath, aAttributes); + + if (NS_SUCCEEDED(rv) || NS_ERROR_FILE_ALREADY_EXISTS == rv || + aSkipAncestors) { + return rv; + } + + // create directories to target + // + // A given local file can be either one of these forms: + // + // - normal: X:\some\path\on\this\drive + // ^--- start here + // + // - UNC path: \\machine\volume\some\path\on\this\drive + // ^--- start here + // + // Skip the first 'X:\' for the first form, and skip the first full + // '\\machine\volume\' segment for the second form. + + wchar_t* path = char16ptr_t(mWorkingPath.BeginWriting()); + + if (path[0] == L'\\' && path[1] == L'\\') { + // dealing with a UNC path here; skip past '\\machine\' + path = wcschr(path + 2, L'\\'); + if (!path) { + return NS_ERROR_FILE_INVALID_PATH; + } + ++path; + } + + // search for first slash after the drive (or volume) name + wchar_t* slash = wcschr(path, L'\\'); + + nsresult directoryCreateError = NS_OK; + if (slash) { + // skip the first '\\' + ++slash; + slash = wcschr(slash, L'\\'); + + while (slash) { + *slash = L'\0'; + + if (!::CreateDirectoryW(mWorkingPath.get(), nullptr)) { + rv = ConvertWinError(GetLastError()); + if (NS_ERROR_FILE_NOT_FOUND == rv && + NS_ERROR_FILE_ACCESS_DENIED == directoryCreateError) { + // If a previous CreateDirectory failed due to access, return that. + return NS_ERROR_FILE_ACCESS_DENIED; + } + // perhaps the base path already exists, or perhaps we don't have + // permissions to create the directory. NOTE: access denied could + // occur on a parent directory even though it exists. + else if (rv != NS_ERROR_FILE_ALREADY_EXISTS && + rv != NS_ERROR_FILE_ACCESS_DENIED) { + return rv; + } + + directoryCreateError = rv; + } + *slash = L'\\'; + ++slash; + slash = wcschr(slash, L'\\'); + } + } + + // If our last CreateDirectory failed due to access, return that. + if (NS_ERROR_FILE_ACCESS_DENIED == directoryCreateError) { + return directoryCreateError; + } + + return createFunc(this, mWorkingPath, aAttributes); +} + +NS_IMETHODIMP +nsLocalFile::Append(const nsAString& aNode) { + // append this path, multiple components are not permitted + return AppendInternal(PromiseFlatString(aNode), false); +} + +NS_IMETHODIMP +nsLocalFile::AppendRelativePath(const nsAString& aNode) { + // append this path, multiple components are permitted + return AppendInternal(PromiseFlatString(aNode), true); +} + +nsresult nsLocalFile::AppendInternal(const nsString& aNode, + bool aMultipleComponents) { + if (aNode.IsEmpty()) { + return NS_OK; + } + + // check the relative path for validity + if (aNode.First() == L'\\' || // can't start with an '\' + aNode.Contains(L'/') || // can't contain / + aNode.EqualsASCII("..")) { // can't be .. + return NS_ERROR_FILE_UNRECOGNIZED_PATH; + } + + if (aMultipleComponents) { + // can't contain .. as a path component. Ensure that the valid components + // "foo..foo", "..foo", and "foo.." are not falsely detected, + // but the invalid paths "..\", "foo\..", "foo\..\foo", + // "..\foo", etc are. + constexpr auto doubleDot = u"\\.."_ns; + nsAString::const_iterator start, end, offset; + aNode.BeginReading(start); + aNode.EndReading(end); + offset = end; + while (FindInReadable(doubleDot, start, offset)) { + if (offset == end || *offset == L'\\') { + return NS_ERROR_FILE_UNRECOGNIZED_PATH; + } + start = offset; + offset = end; + } + + // catches the remaining cases of prefixes + if (StringBeginsWith(aNode, u"..\\"_ns)) { + return NS_ERROR_FILE_UNRECOGNIZED_PATH; + } + } + // single components can't contain '\' + else if (aNode.Contains(L'\\')) { + return NS_ERROR_FILE_UNRECOGNIZED_PATH; + } + + MakeDirty(); + + mWorkingPath.Append('\\'); + mWorkingPath.Append(aNode); + + if (IsSpecialNTFSPath(mWorkingPath)) { + // Revert changes to mWorkingPath: + mWorkingPath.SetLength(mWorkingPath.Length() - aNode.Length() - 1); + return NS_ERROR_FILE_UNRECOGNIZED_PATH; + } + + return NS_OK; +} + +nsresult nsLocalFile::OpenNSPRFileDescMaybeShareDelete(int32_t aFlags, + int32_t aMode, + bool aShareDelete, + PRFileDesc** aResult) { + return OpenFile(mWorkingPath, aFlags, aMode, aShareDelete, aResult); +} + +#define TOUPPER(u) (((u) >= L'a' && (u) <= L'z') ? (u) - (L'a' - L'A') : (u)) + +NS_IMETHODIMP +nsLocalFile::Normalize() { + // XXX See bug 187957 comment 18 for possible problems with this + // implementation. + + if (mWorkingPath.IsEmpty()) { + return NS_OK; + } + + nsAutoString path(mWorkingPath); + + // find the index of the root backslash for the path. Everything before + // this is considered fully normalized and cannot be ascended beyond + // using ".." For a local drive this is the first slash (e.g. "c:\"). + // For a UNC path it is the slash following the share name + // (e.g. "\\server\share\"). + int32_t rootIdx = 2; // default to local drive + if (path.First() == L'\\') { // if a share then calculate the rootIdx + rootIdx = path.FindChar(L'\\', 2); // skip \\ in front of the server + if (rootIdx == kNotFound) { + return NS_OK; // already normalized + } + rootIdx = path.FindChar(L'\\', rootIdx + 1); + if (rootIdx == kNotFound) { + return NS_OK; // already normalized + } + } else if (path.CharAt(rootIdx) != L'\\') { + // The path has been specified relative to the current working directory + // for that drive. To normalize it, the current working directory for + // that drive needs to be inserted before the supplied relative path + // which will provide an absolute path (and the rootIdx will still be 2). + WCHAR cwd[MAX_PATH]; + WCHAR* pcwd = cwd; + int drive = TOUPPER(path.First()) - 'A' + 1; + /* We need to worry about IPH, for details read bug 419326. + * _getdrives - http://msdn2.microsoft.com/en-us/library/xdhk0xd2.aspx + * uses a bitmask, bit 0 is 'a:' + * _chdrive - http://msdn2.microsoft.com/en-us/library/0d1409hb.aspx + * _getdcwd - http://msdn2.microsoft.com/en-us/library/7t2zk3s4.aspx + * take an int, 1 is 'a:'. + * + * Because of this, we need to do some math. Subtract 1 to convert from + * _chdrive/_getdcwd format to _getdrives drive numbering. + * Shift left x bits to convert from integer indexing to bitfield indexing. + * And of course, we need to find out if the drive is in the bitmask. + * + * If we're really unlucky, we can still lose, but only if the user + * manages to eject the drive between our call to _getdrives() and + * our *calls* to _wgetdcwd. + */ + if (!((1 << (drive - 1)) & _getdrives())) { + return NS_ERROR_FILE_INVALID_PATH; + } + if (!_wgetdcwd(drive, pcwd, MAX_PATH)) { + pcwd = _wgetdcwd(drive, 0, 0); + } + if (!pcwd) { + return NS_ERROR_OUT_OF_MEMORY; + } + nsAutoString currentDir(pcwd); + if (pcwd != cwd) { + free(pcwd); + } + + if (currentDir.Last() == '\\') { + path.Replace(0, 2, currentDir); + } else { + path.Replace(0, 2, currentDir + u"\\"_ns); + } + } + + MOZ_ASSERT(0 < rootIdx && rootIdx < (int32_t)path.Length(), + "rootIdx is invalid"); + MOZ_ASSERT(path.CharAt(rootIdx) == '\\', "rootIdx is invalid"); + + // if there is nothing following the root path then it is already normalized + if (rootIdx + 1 == (int32_t)path.Length()) { + return NS_OK; + } + + // assign the root + const char16_t* pathBuffer = path.get(); // simplify access to the buffer + mWorkingPath.SetCapacity(path.Length()); // it won't ever grow longer + mWorkingPath.Assign(pathBuffer, rootIdx); + + // Normalize the path components. The actions taken are: + // + // "\\" condense to single backslash + // "." remove from path + // ".." up a directory + // "..." remove from path (any number of dots > 2) + // + // The last form is something that Windows 95 and 98 supported and + // is a shortcut for changing up multiple directories. Windows XP + // and ilk ignore it in a path, as is done here. + int32_t len, begin, end = rootIdx; + while (end < (int32_t)path.Length()) { + // find the current segment (text between the backslashes) to + // be examined, this will set the following variables: + // begin == index of first char in segment + // end == index 1 char after last char in segment + // len == length of segment + begin = end + 1; + end = path.FindChar('\\', begin); + if (end == kNotFound) { + end = path.Length(); + } + len = end - begin; + + // ignore double backslashes + if (len == 0) { + continue; + } + + // len != 0, and interesting paths always begin with a dot + if (pathBuffer[begin] == '.') { + // ignore single dots + if (len == 1) { + continue; + } + + // handle multiple dots + if (len >= 2 && pathBuffer[begin + 1] == L'.') { + // back up a path component on double dot + if (len == 2) { + int32_t prev = mWorkingPath.RFindChar('\\'); + if (prev >= rootIdx) { + mWorkingPath.Truncate(prev); + } + continue; + } + + // length is > 2 and the first two characters are dots. + // if the rest of the string is dots, then ignore it. + int idx = len - 1; + for (; idx >= 2; --idx) { + if (pathBuffer[begin + idx] != L'.') { + break; + } + } + + // this is true if the loop above didn't break + // and all characters in this segment are dots. + if (idx < 2) { + continue; + } + } + } + + // add the current component to the path, including the preceding backslash + mWorkingPath.Append(pathBuffer + begin - 1, len + 1); + } + + // kill trailing dots and spaces. + int32_t filePathLen = mWorkingPath.Length() - 1; + while (filePathLen > 0 && (mWorkingPath[filePathLen] == L' ' || + mWorkingPath[filePathLen] == L'.')) { + mWorkingPath.Truncate(filePathLen--); + } + + MakeDirty(); + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::GetLeafName(nsAString& aLeafName) { + aLeafName.Truncate(); + + if (mWorkingPath.IsEmpty()) { + return NS_ERROR_FILE_UNRECOGNIZED_PATH; + } + + int32_t offset = mWorkingPath.RFindChar(L'\\'); + + // if the working path is just a node without any lashes. + if (offset == kNotFound) { + aLeafName = mWorkingPath; + } else { + aLeafName = Substring(mWorkingPath, offset + 1); + } + + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::SetLeafName(const nsAString& aLeafName) { + MakeDirty(); + + if (mWorkingPath.IsEmpty()) { + return NS_ERROR_FILE_UNRECOGNIZED_PATH; + } + + // cannot use nsCString::RFindChar() due to 0x5c problem + int32_t offset = mWorkingPath.RFindChar(L'\\'); + nsString newDir; + if (offset) { + newDir = Substring(mWorkingPath, 0, offset + 1) + aLeafName; + } else { + newDir = mWorkingPath + aLeafName; + } + if (IsSpecialNTFSPath(newDir)) { + return NS_ERROR_FILE_UNRECOGNIZED_PATH; + } + + mWorkingPath.Assign(newDir); + + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::GetDisplayName(nsAString& aLeafName) { + aLeafName.Truncate(); + + if (mWorkingPath.IsEmpty()) { + return NS_ERROR_FILE_UNRECOGNIZED_PATH; + } + SHFILEINFOW sfi = {}; + DWORD_PTR result = ::SHGetFileInfoW(mWorkingPath.get(), 0, &sfi, sizeof(sfi), + SHGFI_DISPLAYNAME); + // If we found a display name, return that: + if (result) { + aLeafName.Assign(sfi.szDisplayName); + return NS_OK; + } + // Nope - fall back to the regular leaf name. + return GetLeafName(aLeafName); +} + +NS_IMETHODIMP +nsLocalFile::GetPath(nsAString& aResult) { + MOZ_ASSERT_IF( + mUseDOSDevicePathSyntax, + !FilePreferences::StartsWithDiskDesignatorAndBackslash(mWorkingPath)); + aResult = mWorkingPath; + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::GetCanonicalPath(nsAString& aResult) { + EnsureShortPath(); + aResult.Assign(mShortWorkingPath); + return NS_OK; +} + +typedef struct { + WORD wLanguage; + WORD wCodePage; +} LANGANDCODEPAGE; + +NS_IMETHODIMP +nsLocalFile::GetVersionInfoField(const char* aField, nsAString& aResult) { + nsresult rv = NS_ERROR_FAILURE; + + const WCHAR* path = mWorkingPath.get(); + + DWORD dummy; + DWORD size = ::GetFileVersionInfoSizeW(path, &dummy); + if (!size) { + return rv; + } + + void* ver = moz_xcalloc(size, 1); + if (::GetFileVersionInfoW(path, 0, size, ver)) { + LANGANDCODEPAGE* translate = nullptr; + UINT pageCount; + BOOL queryResult = ::VerQueryValueW(ver, L"\\VarFileInfo\\Translation", + (void**)&translate, &pageCount); + if (queryResult && translate) { + for (int32_t i = 0; i < 2; ++i) { + wchar_t subBlock[MAX_PATH]; + _snwprintf(subBlock, MAX_PATH, L"\\StringFileInfo\\%04x%04x\\%S", + (i == 0 ? translate[0].wLanguage : ::GetUserDefaultLangID()), + translate[0].wCodePage, aField); + subBlock[MAX_PATH - 1] = 0; + LPVOID value = nullptr; + UINT size; + queryResult = ::VerQueryValueW(ver, subBlock, &value, &size); + if (queryResult && value) { + aResult.Assign(static_cast<char16_t*>(value)); + if (!aResult.IsEmpty()) { + rv = NS_OK; + break; + } + } + } + } + } + free(ver); + + return rv; +} + +NS_IMETHODIMP +nsLocalFile::OpenNSPRFileDescShareDelete(int32_t aFlags, int32_t aMode, + PRFileDesc** aResult) { + nsresult rv = OpenNSPRFileDescMaybeShareDelete(aFlags, aMode, true, aResult); + if (NS_FAILED(rv)) { + return rv; + } + + return NS_OK; +} + +/** + * Determines if the drive type for the specified file is rmeote or local. + * + * @param path The path of the file to check + * @param remote Out parameter, on function success holds true if the specified + * file path is remote, or false if the file path is local. + * @return true on success. The return value implies absolutely nothing about + * wether the file is local or remote. + */ +static bool IsRemoteFilePath(LPCWSTR aPath, bool& aRemote) { + // Obtain the parent directory path and make sure it ends with + // a trailing backslash. + WCHAR dirPath[MAX_PATH + 1] = {0}; + wcsncpy(dirPath, aPath, MAX_PATH); + if (!PathRemoveFileSpecW(dirPath)) { + return false; + } + size_t len = wcslen(dirPath); + // In case the dirPath holds exaclty MAX_PATH and remains unchanged, we + // recheck the required length here since we need to terminate it with + // a backslash. + if (len >= MAX_PATH) { + return false; + } + + dirPath[len] = L'\\'; + dirPath[len + 1] = L'\0'; + UINT driveType = GetDriveTypeW(dirPath); + aRemote = driveType == DRIVE_REMOTE; + return true; +} + +nsresult nsLocalFile::CopySingleFile(nsIFile* aSourceFile, nsIFile* aDestParent, + const nsAString& aNewName, + uint32_t aOptions) { + nsresult rv = NS_OK; + nsAutoString filePath; + + bool move = aOptions & (Move | Rename); + + // get the path that we are going to copy to. + // Since windows does not know how to auto + // resolve shortcuts, we must work with the + // target. + nsAutoString destPath; + rv = aDestParent->GetTarget(destPath); + if (NS_FAILED(rv)) { + return rv; + } + + destPath.Append('\\'); + + if (aNewName.IsEmpty()) { + nsAutoString aFileName; + aSourceFile->GetLeafName(aFileName); + destPath.Append(aFileName); + } else { + destPath.Append(aNewName); + } + + if (aOptions & FollowSymlinks) { + rv = aSourceFile->GetTarget(filePath); + if (filePath.IsEmpty()) { + rv = aSourceFile->GetPath(filePath); + } + } else { + rv = aSourceFile->GetPath(filePath); + } + + if (NS_FAILED(rv)) { + return rv; + } + +#ifdef DEBUG + nsCOMPtr<nsILocalFileWin> srcWinFile = do_QueryInterface(aSourceFile); + MOZ_ASSERT(srcWinFile); + + bool srcUseDOSDevicePathSyntax; + srcWinFile->GetUseDOSDevicePathSyntax(&srcUseDOSDevicePathSyntax); + + nsCOMPtr<nsILocalFileWin> destWinFile = do_QueryInterface(aDestParent); + MOZ_ASSERT(destWinFile); + + bool destUseDOSDevicePathSyntax; + destWinFile->GetUseDOSDevicePathSyntax(&destUseDOSDevicePathSyntax); + + MOZ_ASSERT(srcUseDOSDevicePathSyntax == destUseDOSDevicePathSyntax, + "Copy or Move files with different values for " + "useDOSDevicePathSyntax would fail"); +#endif + + if (FilePreferences::IsBlockedUNCPath(destPath)) { + return NS_ERROR_FILE_ACCESS_DENIED; + } + + int copyOK = 0; + if (move) { + copyOK = ::MoveFileExW(filePath.get(), destPath.get(), + MOVEFILE_REPLACE_EXISTING); + } + + // If we either failed to move the file, or this is a copy, try copying: + if (!copyOK && (!move || GetLastError() == ERROR_NOT_SAME_DEVICE)) { + // Failed renames here should just return access denied. + if (move && (aOptions & Rename)) { + return NS_ERROR_FILE_ACCESS_DENIED; + } + + // Pass the flag COPY_FILE_NO_BUFFERING to CopyFileEx as we may be copying + // to a SMBV2 remote drive. Without this parameter subsequent append mode + // file writes can cause the resultant file to become corrupt. We only need + // to do this if the major version of Windows is > 5(Only Windows Vista and + // above can support SMBV2). With a 7200RPM hard drive: Copying a 1KB file + // with COPY_FILE_NO_BUFFERING takes about 30-60ms. Copying a 1KB file + // without COPY_FILE_NO_BUFFERING takes < 1ms. So we only use + // COPY_FILE_NO_BUFFERING when we have a remote drive. + DWORD dwCopyFlags = COPY_FILE_ALLOW_DECRYPTED_DESTINATION; + bool path1Remote, path2Remote; + if (!IsRemoteFilePath(filePath.get(), path1Remote) || + !IsRemoteFilePath(destPath.get(), path2Remote) || path1Remote || + path2Remote) { + dwCopyFlags |= COPY_FILE_NO_BUFFERING; + } + + copyOK = ::CopyFileExW(filePath.get(), destPath.get(), nullptr, nullptr, + nullptr, dwCopyFlags); + // On Windows 10, copying without buffering has started failing, so try + // with buffering... + if (!copyOK && (dwCopyFlags & COPY_FILE_NO_BUFFERING) && + GetLastError() == ERROR_INVALID_PARAMETER) { + dwCopyFlags &= ~COPY_FILE_NO_BUFFERING; + copyOK = ::CopyFileExW(filePath.get(), destPath.get(), nullptr, nullptr, + nullptr, dwCopyFlags); + } + + if (move && copyOK) { + DeleteFileW(filePath.get()); + } + } + + if (!copyOK) { // CopyFileEx and MoveFileEx return zero at failure. + rv = ConvertWinError(GetLastError()); + } else if (move && !(aOptions & SkipNtfsAclReset)) { + // Set security permissions to inherit from parent. + // Note: propagates to all children: slow for big file trees + PACL pOldDACL = nullptr; + PSECURITY_DESCRIPTOR pSD = nullptr; + ::GetNamedSecurityInfoW((LPWSTR)destPath.get(), SE_FILE_OBJECT, + DACL_SECURITY_INFORMATION, nullptr, nullptr, + &pOldDACL, nullptr, &pSD); + if (pOldDACL) + ::SetNamedSecurityInfoW( + (LPWSTR)destPath.get(), SE_FILE_OBJECT, + DACL_SECURITY_INFORMATION | UNPROTECTED_DACL_SECURITY_INFORMATION, + nullptr, nullptr, pOldDACL, nullptr); + if (pSD) { + LocalFree((HLOCAL)pSD); + } + } + + return rv; +} + +nsresult nsLocalFile::CopyMove(nsIFile* aParentDir, const nsAString& aNewName, + uint32_t aOptions) { + bool move = aOptions & (Move | Rename); + bool followSymlinks = aOptions & FollowSymlinks; + // If we're not provided with a new parent, we're copying or moving to + // another file in the same directory and can safely skip checking if the + // destination directory exists: + bool targetInSameDirectory = !aParentDir; + + nsCOMPtr<nsIFile> newParentDir = aParentDir; + // check to see if this exists, otherwise return an error. + // we will check this by resolving. If the user wants us + // to follow links, then we are talking about the target, + // hence we can use the |FollowSymlinks| option. + nsresult rv = ResolveAndStat(); + if (NS_FAILED(rv)) { + return rv; + } + + if (!newParentDir) { + // no parent was specified. We must rename. + if (aNewName.IsEmpty()) { + return NS_ERROR_INVALID_ARG; + } + + rv = GetParent(getter_AddRefs(newParentDir)); + if (NS_FAILED(rv)) { + return rv; + } + } + + if (!newParentDir) { + return NS_ERROR_FILE_DESTINATION_NOT_DIR; + } + + if (!targetInSameDirectory) { + // make sure it exists and is a directory. Create it if not there. + bool exists = false; + rv = newParentDir->Exists(&exists); + if (NS_FAILED(rv)) { + return rv; + } + + if (!exists) { + rv = newParentDir->Create(DIRECTORY_TYPE, + 0644); // TODO, what permissions should we use + if (NS_FAILED(rv)) { + return rv; + } + } else { + bool isDir = false; + rv = newParentDir->IsDirectory(&isDir); + if (NS_FAILED(rv)) { + return rv; + } + + if (!isDir) { + if (followSymlinks) { + bool isLink = false; + rv = newParentDir->IsSymlink(&isLink); + if (NS_FAILED(rv)) { + return rv; + } + + if (isLink) { + nsAutoString target; + rv = newParentDir->GetTarget(target); + if (NS_FAILED(rv)) { + return rv; + } + + nsCOMPtr<nsIFile> realDest = new nsLocalFile(); + rv = realDest->InitWithPath(target); + if (NS_FAILED(rv)) { + return rv; + } + + return CopyMove(realDest, aNewName, aOptions); + } + } else { + return NS_ERROR_FILE_DESTINATION_NOT_DIR; + } + } + } + } + + // Try different ways to move/copy files/directories + bool done = false; + + bool isDir = false; + rv = IsDirectory(&isDir); + if (NS_FAILED(rv)) { + return rv; + } + + bool isSymlink = false; + rv = IsSymlink(&isSymlink); + if (NS_FAILED(rv)) { + return rv; + } + + // Try to move the file or directory, or try to copy a single file (or + // non-followed symlink) + if (move || !isDir || (isSymlink && !followSymlinks)) { + // Copy/Move single file, or move a directory + if (!aParentDir) { + aOptions |= SkipNtfsAclReset; + } + rv = CopySingleFile(this, newParentDir, aNewName, aOptions); + done = NS_SUCCEEDED(rv); + // If we are moving a directory and that fails, fallback on directory + // enumeration. See bug 231300 for details. + if (!done && !(move && isDir)) { + return rv; + } + } + + // Not able to copy or move directly, so enumerate it + if (!done) { + // create a new target destination in the new parentDir; + nsCOMPtr<nsIFile> target; + rv = newParentDir->Clone(getter_AddRefs(target)); + if (NS_FAILED(rv)) { + return rv; + } + + nsAutoString allocatedNewName; + if (aNewName.IsEmpty()) { + bool isLink = false; + rv = IsSymlink(&isLink); + if (NS_FAILED(rv)) { + return rv; + } + + if (isLink) { + nsAutoString temp; + rv = GetTarget(temp); + if (NS_FAILED(rv)) { + return rv; + } + + int32_t offset = temp.RFindChar(L'\\'); + if (offset == kNotFound) { + allocatedNewName = temp; + } else { + allocatedNewName = Substring(temp, offset + 1); + } + } else { + GetLeafName(allocatedNewName); // this should be the leaf name of the + } + } else { + allocatedNewName = aNewName; + } + + rv = target->Append(allocatedNewName); + if (NS_FAILED(rv)) { + return rv; + } + + allocatedNewName.Truncate(); + + bool exists = false; + // check if the destination directory already exists + rv = target->Exists(&exists); + if (NS_FAILED(rv)) { + return rv; + } + + if (!exists) { + // if the destination directory cannot be created, return an error + rv = target->Create(DIRECTORY_TYPE, + 0644); // TODO, what permissions should we use + if (NS_FAILED(rv)) { + return rv; + } + } else { + // check if the destination directory is writable and empty + bool isWritable = false; + rv = target->IsWritable(&isWritable); + if (NS_FAILED(rv)) { + return rv; + } + + if (!isWritable) { + return NS_ERROR_FILE_ACCESS_DENIED; + } + + nsCOMPtr<nsIDirectoryEnumerator> targetIterator; + rv = target->GetDirectoryEntries(getter_AddRefs(targetIterator)); + if (NS_FAILED(rv)) { + return rv; + } + + bool more; + targetIterator->HasMoreElements(&more); + // return error if target directory is not empty + if (more) { + return NS_ERROR_FILE_DIR_NOT_EMPTY; + } + } + + RefPtr<nsDirEnumerator> dirEnum = new nsDirEnumerator(); + + rv = dirEnum->Init(this); + if (NS_FAILED(rv)) { + NS_WARNING("dirEnum initialization failed"); + return rv; + } + + nsCOMPtr<nsIFile> file; + while (NS_SUCCEEDED(dirEnum->GetNextFile(getter_AddRefs(file))) && file) { + bool isDir = false; + rv = file->IsDirectory(&isDir); + if (NS_FAILED(rv)) { + return rv; + } + + bool isLink = false; + rv = file->IsSymlink(&isLink); + if (NS_FAILED(rv)) { + return rv; + } + + if (move) { + if (followSymlinks) { + return NS_ERROR_FAILURE; + } + + rv = file->MoveTo(target, u""_ns); + if (NS_FAILED(rv)) { + return rv; + } + } else { + if (followSymlinks) { + rv = file->CopyToFollowingLinks(target, u""_ns); + } else { + rv = file->CopyTo(target, u""_ns); + } + if (NS_FAILED(rv)) { + return rv; + } + } + } + // we've finished moving all the children of this directory + // in the new directory. so now delete the directory + // note, we don't need to do a recursive delete. + // MoveTo() is recursive. At this point, + // we've already moved the children of the current folder + // to the new location. nothing should be left in the folder. + if (move) { + rv = Remove(false /* recursive */); + if (NS_FAILED(rv)) { + return rv; + } + } + } + + // If we moved, we want to adjust this. + if (move) { + MakeDirty(); + + nsAutoString newParentPath; + newParentDir->GetPath(newParentPath); + + if (newParentPath.IsEmpty()) { + return NS_ERROR_FAILURE; + } + + if (aNewName.IsEmpty()) { + nsAutoString aFileName; + GetLeafName(aFileName); + + InitWithPath(newParentPath); + Append(aFileName); + } else { + InitWithPath(newParentPath); + Append(aNewName); + } + } + + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::CopyTo(nsIFile* aNewParentDir, const nsAString& aNewName) { + return CopyMove(aNewParentDir, aNewName, 0); +} + +NS_IMETHODIMP +nsLocalFile::CopyToFollowingLinks(nsIFile* aNewParentDir, + const nsAString& aNewName) { + return CopyMove(aNewParentDir, aNewName, FollowSymlinks); +} + +NS_IMETHODIMP +nsLocalFile::MoveTo(nsIFile* aNewParentDir, const nsAString& aNewName) { + return CopyMove(aNewParentDir, aNewName, Move); +} + +NS_IMETHODIMP +nsLocalFile::MoveToFollowingLinks(nsIFile* aNewParentDir, + const nsAString& aNewName) { + return CopyMove(aNewParentDir, aNewName, Move | FollowSymlinks); +} + +NS_IMETHODIMP +nsLocalFile::RenameTo(nsIFile* aNewParentDir, const nsAString& aNewName) { + // If we're not provided with a new parent, we're renaming inside one and + // the same directory and can safely skip checking if the destination + // directory exists: + bool targetInSameDirectory = !aNewParentDir; + + nsCOMPtr<nsIFile> targetParentDir = aNewParentDir; + // check to see if this exists, otherwise return an error. + // we will check this by resolving. If the user wants us + // to follow links, then we are talking about the target, + // hence we can use the |followSymlinks| parameter. + nsresult rv = ResolveAndStat(); + if (NS_FAILED(rv)) { + return rv; + } + + if (!targetParentDir) { + // no parent was specified. We must rename. + if (aNewName.IsEmpty()) { + return NS_ERROR_INVALID_ARG; + } + rv = GetParent(getter_AddRefs(targetParentDir)); + if (NS_FAILED(rv)) { + return rv; + } + } + + if (!targetParentDir) { + return NS_ERROR_FILE_DESTINATION_NOT_DIR; + } + + if (!targetInSameDirectory) { + // make sure it exists and is a directory. Create it if not there. + bool exists = false; + rv = targetParentDir->Exists(&exists); + if (NS_FAILED(rv)) { + return rv; + } + + if (!exists) { + rv = targetParentDir->Create(DIRECTORY_TYPE, 0644); + if (NS_FAILED(rv)) { + return rv; + } + } else { + bool isDir = false; + rv = targetParentDir->IsDirectory(&isDir); + if (NS_FAILED(rv)) { + return rv; + } + if (!isDir) { + return NS_ERROR_FILE_DESTINATION_NOT_DIR; + } + } + } + + uint32_t options = Rename; + if (!aNewParentDir) { + options |= SkipNtfsAclReset; + } + // Move single file, or move a directory + return CopySingleFile(this, targetParentDir, aNewName, options); +} + +NS_IMETHODIMP +nsLocalFile::RenameToNative(nsIFile* aNewParentDir, + const nsACString& aNewName) { + nsAutoString tmp; + nsresult rv = NS_CopyNativeToUnicode(aNewName, tmp); + if (NS_SUCCEEDED(rv)) { + return RenameTo(aNewParentDir, tmp); + } + + return rv; +} + +NS_IMETHODIMP +nsLocalFile::Load(PRLibrary** aResult) { + // Check we are correctly initialized. + CHECK_mWorkingPath(); + if (NS_WARN_IF(!aResult)) { + return NS_ERROR_INVALID_ARG; + } + +#ifdef NS_BUILD_REFCNT_LOGGING + nsTraceRefcnt::SetActivityIsLegal(false); +#endif + + PRLibSpec libSpec; + libSpec.value.pathname_u = mWorkingPath.get(); + libSpec.type = PR_LibSpec_PathnameU; + *aResult = PR_LoadLibraryWithFlags(libSpec, 0); + +#ifdef NS_BUILD_REFCNT_LOGGING + nsTraceRefcnt::SetActivityIsLegal(true); +#endif + + if (*aResult) { + return NS_OK; + } + return NS_ERROR_NULL_POINTER; +} + +NS_IMETHODIMP +nsLocalFile::Remove(bool aRecursive) { + // NOTE: + // + // if the working path points to a shortcut, then we will only + // delete the shortcut itself. even if the shortcut points to + // a directory, we will not recurse into that directory or + // delete that directory itself. likewise, if the shortcut + // points to a normal file, we will not delete the real file. + // this is done to be consistent with the other platforms that + // behave this way. we do this even if the followLinks attribute + // is set to true. this helps protect against misuse that could + // lead to security bugs (e.g., bug 210588). + // + // Since shortcut files are no longer permitted to be used as unix-like + // symlinks interspersed in the path (e.g. "c:/file.lnk/foo/bar.txt") + // this processing is a lot simpler. Even if the shortcut file is + // pointing to a directory, only the mWorkingPath value is used and so + // only the shortcut file will be deleted. + + // Check we are correctly initialized. + CHECK_mWorkingPath(); + + nsresult rv = NS_OK; + + bool isLink = false; + rv = IsSymlink(&isLink); + if (NS_FAILED(rv)) { + return rv; + } + + // only check to see if we have a directory if it isn't a link + bool isDir = false; + if (!isLink) { + rv = IsDirectory(&isDir); + if (NS_FAILED(rv)) { + return rv; + } + } + + if (isDir) { + if (aRecursive) { + // WARNING: neither the `SHFileOperation` nor `IFileOperation` APIs are + // appropriate here as neither handle long path names, i.e. paths prefixed + // with `\\?\` or longer than 260 characters on Windows 10+ system with + // long paths enabled. + + RefPtr<nsDirEnumerator> dirEnum = new nsDirEnumerator(); + + rv = dirEnum->Init(this); + if (NS_FAILED(rv)) { + return rv; + } + + nsCOMPtr<nsIFile> file; + while (NS_SUCCEEDED(dirEnum->GetNextFile(getter_AddRefs(file))) && file) { + file->Remove(aRecursive); + } + } + if (RemoveDirectoryW(mWorkingPath.get()) == 0) { + return ConvertWinError(GetLastError()); + } + } else { + if (DeleteFileW(mWorkingPath.get()) == 0) { + return ConvertWinError(GetLastError()); + } + } + + MakeDirty(); + return rv; +} + +nsresult nsLocalFile::GetDateImpl(PRTime* aTime, + nsLocalFile::TimeField aTimeField, + bool aFollowLinks) { + // Check we are correctly initialized. + CHECK_mWorkingPath(); + + if (NS_WARN_IF(!aTime)) { + return NS_ERROR_INVALID_ARG; + } + + FileInfo symlinkInfo{}; + FileInfo* pInfo; + + if (aFollowLinks) { + if (nsresult rv = GetFileInfo(mWorkingPath, &symlinkInfo); NS_FAILED(rv)) { + return rv; + } + + pInfo = &symlinkInfo; + } else { + if (nsresult rv = ResolveAndStat(); NS_FAILED(rv)) { + return rv; + } + + pInfo = &mFileInfo; + } + + switch (aTimeField) { + case TimeField::AccessedTime: + *aTime = pInfo->accessTime / PR_USEC_PER_MSEC; + break; + + case TimeField::ModifiedTime: + *aTime = pInfo->modifyTime / PR_USEC_PER_MSEC; + break; + + default: + MOZ_CRASH("Unknown time field"); + } + + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::GetLastAccessedTime(PRTime* aLastAccessedTime) { + return GetDateImpl(aLastAccessedTime, TimeField::AccessedTime, + /* aFollowSymlinks = */ true); +} + +NS_IMETHODIMP +nsLocalFile::GetLastAccessedTimeOfLink(PRTime* aLastAccessedTime) { + return GetDateImpl(aLastAccessedTime, TimeField::AccessedTime, + /* aFollowSymlinks = */ false); +} + +NS_IMETHODIMP +nsLocalFile::SetLastAccessedTime(PRTime aLastAccessedTime) { + return SetDateImpl(aLastAccessedTime, TimeField::AccessedTime); +} + +NS_IMETHODIMP +nsLocalFile::SetLastAccessedTimeOfLink(PRTime aLastAccessedTime) { + return SetLastAccessedTime(aLastAccessedTime); +} + +NS_IMETHODIMP +nsLocalFile::GetLastModifiedTime(PRTime* aLastModifiedTime) { + return GetDateImpl(aLastModifiedTime, TimeField::ModifiedTime, + /* aFollowSymlinks = */ true); +} + +NS_IMETHODIMP +nsLocalFile::GetLastModifiedTimeOfLink(PRTime* aLastModifiedTime) { + return GetDateImpl(aLastModifiedTime, TimeField::ModifiedTime, + /* aFollowSymlinks = */ false); +} + +NS_IMETHODIMP +nsLocalFile::SetLastModifiedTime(PRTime aLastModifiedTime) { + return SetDateImpl(aLastModifiedTime, TimeField::ModifiedTime); +} + +NS_IMETHODIMP +nsLocalFile::SetLastModifiedTimeOfLink(PRTime aLastModifiedTime) { + return SetLastModifiedTime(aLastModifiedTime); +} + +NS_IMETHODIMP +nsLocalFile::GetCreationTime(PRTime* aCreationTime) { + CHECK_mWorkingPath(); + + if (NS_WARN_IF(!aCreationTime)) { + return NS_ERROR_INVALID_ARG; + } + + nsresult rv = ResolveAndStat(); + NS_ENSURE_SUCCESS(rv, rv); + + *aCreationTime = mFileInfo.creationTime / PR_USEC_PER_MSEC; + + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::GetCreationTimeOfLink(PRTime* aCreationTime) { + CHECK_mWorkingPath(); + + if (NS_WARN_IF(!aCreationTime)) { + return NS_ERROR_INVALID_ARG; + } + + FileInfo info; + nsresult rv = GetFileInfo(mWorkingPath, &info); + NS_ENSURE_SUCCESS(rv, rv); + + *aCreationTime = info.creationTime / PR_USEC_PER_MSEC; + + return NS_OK; +} + +nsresult nsLocalFile::SetDateImpl(PRTime aTime, + nsLocalFile::TimeField aTimeField) { + // Check we are correctly initialized. + CHECK_mWorkingPath(); + + // The FILE_FLAG_BACKUP_SEMANTICS is required in order to change the + // modification time for directories. + HANDLE file = + ::CreateFileW(mWorkingPath.get(), // pointer to name of the file + GENERIC_WRITE, // access (write) mode + 0, // share mode + nullptr, // pointer to security attributes + OPEN_EXISTING, // how to create + FILE_FLAG_BACKUP_SEMANTICS, // file attributes + nullptr); + + if (file == INVALID_HANDLE_VALUE) { + return ConvertWinError(GetLastError()); + } + + FILETIME ft; + SYSTEMTIME st; + PRExplodedTime pret; + + if (aTime == 0) { + aTime = PR_Now() / PR_USEC_PER_MSEC; + } + + // PR_ExplodeTime expects usecs... + PR_ExplodeTime(aTime * PR_USEC_PER_MSEC, PR_GMTParameters, &pret); + st.wYear = pret.tm_year; + st.wMonth = + pret.tm_month + 1; // Convert start offset -- Win32: Jan=1; NSPR: Jan=0 + st.wDayOfWeek = pret.tm_wday; + st.wDay = pret.tm_mday; + st.wHour = pret.tm_hour; + st.wMinute = pret.tm_min; + st.wSecond = pret.tm_sec; + st.wMilliseconds = pret.tm_usec / 1000; + + const FILETIME* accessTime = nullptr; + const FILETIME* modifiedTime = nullptr; + + if (aTimeField == TimeField::AccessedTime) { + accessTime = &ft; + } else { + modifiedTime = &ft; + } + + nsresult rv = NS_OK; + + // if at least one of these fails... + if (!(SystemTimeToFileTime(&st, &ft) != 0 && + SetFileTime(file, nullptr, accessTime, modifiedTime) != 0)) { + rv = ConvertWinError(GetLastError()); + } + + CloseHandle(file); + + return rv; +} + +NS_IMETHODIMP +nsLocalFile::GetPermissions(uint32_t* aPermissions) { + if (NS_WARN_IF(!aPermissions)) { + return NS_ERROR_INVALID_ARG; + } + + // get the permissions of the target as determined by mFollowSymlinks + // If true, then this will be for the target of the shortcut file, + // otherwise it will be for the shortcut file itself (i.e. the same + // results as GetPermissionsOfLink) + nsresult rv = ResolveAndStat(); + if (NS_FAILED(rv)) { + return rv; + } + + bool isWritable = false; + rv = IsWritable(&isWritable); + if (NS_FAILED(rv)) { + return rv; + } + + bool isExecutable = false; + rv = IsExecutable(&isExecutable); + if (NS_FAILED(rv)) { + return rv; + } + + *aPermissions = PR_IRUSR | PR_IRGRP | PR_IROTH; // all read + if (isWritable) { + *aPermissions |= PR_IWUSR | PR_IWGRP | PR_IWOTH; // all write + } + if (isExecutable) { + *aPermissions |= PR_IXUSR | PR_IXGRP | PR_IXOTH; // all execute + } + + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::GetPermissionsOfLink(uint32_t* aPermissions) { + // Check we are correctly initialized. + CHECK_mWorkingPath(); + + if (NS_WARN_IF(!aPermissions)) { + return NS_ERROR_INVALID_ARG; + } + + // The caller is assumed to have already called IsSymlink + // and to have found that this file is a link. It is not + // possible for a link file to be executable. + + DWORD word = ::GetFileAttributesW(mWorkingPath.get()); + if (word == INVALID_FILE_ATTRIBUTES) { + return NS_ERROR_FILE_INVALID_PATH; + } + + bool isWritable = !(word & FILE_ATTRIBUTE_READONLY); + *aPermissions = PR_IRUSR | PR_IRGRP | PR_IROTH; // all read + if (isWritable) { + *aPermissions |= PR_IWUSR | PR_IWGRP | PR_IWOTH; // all write + } + + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::SetPermissions(uint32_t aPermissions) { + // Check we are correctly initialized. + CHECK_mWorkingPath(); + + // set the permissions of the target as determined by mFollowSymlinks + // If true, then this will be for the target of the shortcut file, + // otherwise it will be for the shortcut file itself (i.e. the same + // results as SetPermissionsOfLink) + nsresult rv = Resolve(); + if (NS_FAILED(rv)) { + return rv; + } + + // windows only knows about the following permissions + int mode = 0; + if (aPermissions & (PR_IRUSR | PR_IRGRP | PR_IROTH)) { // any read + mode |= _S_IREAD; + } + if (aPermissions & (PR_IWUSR | PR_IWGRP | PR_IWOTH)) { // any write + mode |= _S_IWRITE; + } + + if (_wchmod(mResolvedPath.get(), mode) == -1) { + return NS_ERROR_FAILURE; + } + + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::SetPermissionsOfLink(uint32_t aPermissions) { + // The caller is assumed to have already called IsSymlink + // and to have found that this file is a link. + + // windows only knows about the following permissions + int mode = 0; + if (aPermissions & (PR_IRUSR | PR_IRGRP | PR_IROTH)) { // any read + mode |= _S_IREAD; + } + if (aPermissions & (PR_IWUSR | PR_IWGRP | PR_IWOTH)) { // any write + mode |= _S_IWRITE; + } + + if (_wchmod(mWorkingPath.get(), mode) == -1) { + return NS_ERROR_FAILURE; + } + + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::GetFileSize(int64_t* aFileSize) { + if (NS_WARN_IF(!aFileSize)) { + return NS_ERROR_INVALID_ARG; + } + + nsresult rv = ResolveAndStat(); + if (NS_FAILED(rv)) { + return rv; + } + + *aFileSize = mFileInfo.size; + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::GetFileSizeOfLink(int64_t* aFileSize) { + // Check we are correctly initialized. + CHECK_mWorkingPath(); + + if (NS_WARN_IF(!aFileSize)) { + return NS_ERROR_INVALID_ARG; + } + + // The caller is assumed to have already called IsSymlink + // and to have found that this file is a link. + + FileInfo info{}; + if (NS_FAILED(GetFileInfo(mWorkingPath, &info))) { + return NS_ERROR_FILE_INVALID_PATH; + } + + *aFileSize = info.size; + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::SetFileSize(int64_t aFileSize) { + // Check we are correctly initialized. + CHECK_mWorkingPath(); + + HANDLE hFile = + ::CreateFileW(mWorkingPath.get(), // pointer to name of the file + GENERIC_WRITE, // access (write) mode + FILE_SHARE_READ, // share mode + nullptr, // pointer to security attributes + OPEN_EXISTING, // how to create + FILE_ATTRIBUTE_NORMAL, // file attributes + nullptr); + if (hFile == INVALID_HANDLE_VALUE) { + return ConvertWinError(GetLastError()); + } + + // seek the file pointer to the new, desired end of file + // and then truncate the file at that position + nsresult rv = NS_ERROR_FAILURE; + LARGE_INTEGER distance; + distance.QuadPart = aFileSize; + if (SetFilePointerEx(hFile, distance, nullptr, FILE_BEGIN) && + SetEndOfFile(hFile)) { + MakeDirty(); + rv = NS_OK; + } + + CloseHandle(hFile); + return rv; +} + +static nsresult GetDiskSpaceAttributes(const nsString& aResolvedPath, + int64_t* aFreeBytesAvailable, + int64_t* aTotalBytes) { + ULARGE_INTEGER liFreeBytesAvailableToCaller; + ULARGE_INTEGER liTotalNumberOfBytes; + if (::GetDiskFreeSpaceExW(aResolvedPath.get(), &liFreeBytesAvailableToCaller, + &liTotalNumberOfBytes, nullptr)) { + *aFreeBytesAvailable = liFreeBytesAvailableToCaller.QuadPart; + *aTotalBytes = liTotalNumberOfBytes.QuadPart; + + return NS_OK; + } + + return ConvertWinError(::GetLastError()); +} + +NS_IMETHODIMP +nsLocalFile::GetDiskSpaceAvailable(int64_t* aDiskSpaceAvailable) { + // Check we are correctly initialized. + CHECK_mWorkingPath(); + + if (NS_WARN_IF(!aDiskSpaceAvailable)) { + return NS_ERROR_INVALID_ARG; + } + + *aDiskSpaceAvailable = 0; + + nsresult rv = ResolveAndStat(); + if (NS_FAILED(rv)) { + return rv; + } + + if (mFileInfo.type == PR_FILE_FILE) { + // Since GetDiskFreeSpaceExW works only on directories, use the parent. + nsCOMPtr<nsIFile> parent; + if (NS_SUCCEEDED(GetParent(getter_AddRefs(parent))) && parent) { + return parent->GetDiskSpaceAvailable(aDiskSpaceAvailable); + } + } + + int64_t dummy = 0; + return GetDiskSpaceAttributes(mResolvedPath, aDiskSpaceAvailable, &dummy); +} + +NS_IMETHODIMP +nsLocalFile::GetDiskCapacity(int64_t* aDiskCapacity) { + // Check we are correctly initialized. + CHECK_mWorkingPath(); + + if (NS_WARN_IF(!aDiskCapacity)) { + return NS_ERROR_INVALID_ARG; + } + + nsresult rv = ResolveAndStat(); + if (NS_FAILED(rv)) { + return rv; + } + + if (mFileInfo.type == PR_FILE_FILE) { + // Since GetDiskFreeSpaceExW works only on directories, use the parent. + nsCOMPtr<nsIFile> parent; + if (NS_SUCCEEDED(GetParent(getter_AddRefs(parent))) && parent) { + return parent->GetDiskCapacity(aDiskCapacity); + } + } + + int64_t dummy = 0; + return GetDiskSpaceAttributes(mResolvedPath, &dummy, aDiskCapacity); +} + +NS_IMETHODIMP +nsLocalFile::GetParent(nsIFile** aParent) { + // Check we are correctly initialized. + CHECK_mWorkingPath(); + + if (NS_WARN_IF(!aParent)) { + return NS_ERROR_INVALID_ARG; + } + + // A two-character path must be a drive such as C:, so it has no parent + if (mWorkingPath.Length() == 2) { + *aParent = nullptr; + return NS_OK; + } + + int32_t offset = mWorkingPath.RFindChar(char16_t('\\')); + // adding this offset check that was removed in bug 241708 fixes mail + // directories that aren't relative to/underneath the profile dir. + // e.g., on a different drive. Before you remove them, please make + // sure local mail directories that aren't underneath the profile dir work. + if (offset == kNotFound) { + return NS_ERROR_FILE_UNRECOGNIZED_PATH; + } + + // A path of the form \\NAME is a top-level path and has no parent + if (offset == 1 && mWorkingPath[0] == L'\\') { + *aParent = nullptr; + return NS_OK; + } + + nsAutoString parentPath(mWorkingPath); + + if (offset > 0) { + parentPath.Truncate(offset); + } else { + parentPath.AssignLiteral("\\\\."); + } + + nsCOMPtr<nsIFile> localFile; + nsresult rv = NewLocalFile(parentPath, mUseDOSDevicePathSyntax, + getter_AddRefs(localFile)); + if (NS_FAILED(rv)) { + return rv; + } + + localFile.forget(aParent); + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::Exists(bool* aResult) { + // Check we are correctly initialized. + CHECK_mWorkingPath(); + + if (NS_WARN_IF(!aResult)) { + return NS_ERROR_INVALID_ARG; + } + *aResult = false; + + MakeDirty(); + nsresult rv = ResolveAndStat(); + *aResult = NS_SUCCEEDED(rv) || rv == NS_ERROR_FILE_IS_LOCKED; + + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::IsWritable(bool* aIsWritable) { + // Check we are correctly initialized. + CHECK_mWorkingPath(); + + // The read-only attribute on a FAT directory only means that it can't + // be deleted. It is still possible to modify the contents of the directory. + nsresult rv = IsDirectory(aIsWritable); + if (rv == NS_ERROR_FILE_ACCESS_DENIED) { + *aIsWritable = true; + return NS_OK; + } else if (rv == NS_ERROR_FILE_IS_LOCKED) { + // If the file is normally allowed write access + // we should still return that the file is writable. + } else if (NS_FAILED(rv)) { + return rv; + } + if (*aIsWritable) { + return NS_OK; + } + + // writable if the file doesn't have the readonly attribute + rv = HasFileAttribute(FILE_ATTRIBUTE_READONLY, aIsWritable); + if (rv == NS_ERROR_FILE_ACCESS_DENIED) { + *aIsWritable = false; + return NS_OK; + } else if (rv == NS_ERROR_FILE_IS_LOCKED) { + // If the file is normally allowed write access + // we should still return that the file is writable. + } else if (NS_FAILED(rv)) { + return rv; + } + *aIsWritable = !*aIsWritable; + + // If the read only attribute is not set, check to make sure + // we can open the file with write access. + if (*aIsWritable) { + PRFileDesc* file; + rv = OpenFile(mResolvedPath, PR_WRONLY, 0, false, &file); + if (NS_SUCCEEDED(rv)) { + PR_Close(file); + } else if (rv == NS_ERROR_FILE_ACCESS_DENIED) { + *aIsWritable = false; + } else if (rv == NS_ERROR_FILE_IS_LOCKED) { + // If it is locked and read only we would have + // gotten access denied + *aIsWritable = true; + } else { + return rv; + } + } + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::IsReadable(bool* aResult) { + // Check we are correctly initialized. + CHECK_mWorkingPath(); + + if (NS_WARN_IF(!aResult)) { + return NS_ERROR_INVALID_ARG; + } + *aResult = false; + + nsresult rv = ResolveAndStat(); + if (NS_FAILED(rv)) { + return rv; + } + + *aResult = true; + return NS_OK; +} + +nsresult nsLocalFile::LookupExtensionIn(const char* const* aExtensionsArray, + size_t aArrayLength, bool* aResult) { + // Check we are correctly initialized. + CHECK_mWorkingPath(); + + if (NS_WARN_IF(!aResult)) { + return NS_ERROR_INVALID_ARG; + } + *aResult = false; + + nsresult rv; + + // only files can be executables + bool isFile; + rv = IsFile(&isFile); + if (NS_FAILED(rv)) { + return rv; + } + if (!isFile) { + return NS_OK; + } + + // TODO: shouldn't we be checking mFollowSymlinks here? + bool symLink = false; + rv = IsSymlink(&symLink); + if (NS_FAILED(rv)) { + return rv; + } + + nsAutoString path; + if (symLink) { + GetTarget(path); + } else { + GetPath(path); + } + + // kill trailing dots and spaces. + int32_t filePathLen = path.Length() - 1; + while (filePathLen > 0 && + (path[filePathLen] == L' ' || path[filePathLen] == L'.')) { + path.Truncate(filePathLen--); + } + + // Get extension. + int32_t dotIdx = path.RFindChar(char16_t('.')); + if (dotIdx != kNotFound) { + // Convert extension to lower case. + char16_t* p = path.BeginWriting(); + for (p += dotIdx + 1; *p; ++p) { + *p += (*p >= L'A' && *p <= L'Z') ? 'a' - 'A' : 0; + } + + nsDependentSubstring ext = Substring(path, dotIdx); + for (size_t i = 0; i < aArrayLength; ++i) { + if (ext.EqualsASCII(aExtensionsArray[i])) { + // Found a match. Set result and quit. + *aResult = true; + break; + } + } + } + + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::IsExecutable(bool* aResult) { + return LookupExtensionIn(sExecutableExts, ArrayLength(sExecutableExts), + aResult); +} + +NS_IMETHODIMP +nsLocalFile::IsDirectory(bool* aResult) { + return HasFileAttribute(FILE_ATTRIBUTE_DIRECTORY, aResult); +} + +NS_IMETHODIMP +nsLocalFile::IsFile(bool* aResult) { + nsresult rv = HasFileAttribute(FILE_ATTRIBUTE_DIRECTORY, aResult); + if (NS_SUCCEEDED(rv)) { + *aResult = !*aResult; + } + return rv; +} + +NS_IMETHODIMP +nsLocalFile::IsHidden(bool* aResult) { + return HasFileAttribute(FILE_ATTRIBUTE_HIDDEN, aResult); +} + +nsresult nsLocalFile::HasFileAttribute(DWORD aFileAttrib, bool* aResult) { + if (NS_WARN_IF(!aResult)) { + return NS_ERROR_INVALID_ARG; + } + + nsresult rv = Resolve(); + if (NS_FAILED(rv)) { + return rv; + } + + DWORD attributes = GetFileAttributesW(mResolvedPath.get()); + if (INVALID_FILE_ATTRIBUTES == attributes) { + return ConvertWinError(GetLastError()); + } + + *aResult = ((attributes & aFileAttrib) != 0); + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::IsSymlink(bool* aResult) { + // Check we are correctly initialized. + CHECK_mWorkingPath(); + + if (NS_WARN_IF(!aResult)) { + return NS_ERROR_INVALID_ARG; + } + + // TODO: Implement symlink support + *aResult = false; + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::IsSpecial(bool* aResult) { + return HasFileAttribute(FILE_ATTRIBUTE_SYSTEM, aResult); +} + +NS_IMETHODIMP +nsLocalFile::Equals(nsIFile* aInFile, bool* aResult) { + if (NS_WARN_IF(!aInFile)) { + return NS_ERROR_INVALID_ARG; + } + if (NS_WARN_IF(!aResult)) { + return NS_ERROR_INVALID_ARG; + } + + nsCOMPtr<nsILocalFileWin> lf(do_QueryInterface(aInFile)); + if (!lf) { + *aResult = false; + return NS_OK; + } + + bool inUseDOSDevicePathSyntax; + lf->GetUseDOSDevicePathSyntax(&inUseDOSDevicePathSyntax); + + // If useDOSDevicePathSyntax are different remove the prefix from the one that + // might have it. This is added because of Omnijar. It compares files from + // different modules with itself. + bool removePathPrefix, removeInPathPrefix; + if (inUseDOSDevicePathSyntax != mUseDOSDevicePathSyntax) { + removeInPathPrefix = inUseDOSDevicePathSyntax; + removePathPrefix = mUseDOSDevicePathSyntax; + } else { + removePathPrefix = removeInPathPrefix = false; + } + + nsAutoString inFilePath, workingPath; + aInFile->GetPath(inFilePath); + workingPath = mWorkingPath; + + constexpr static auto equalPath = + [](nsAutoString& workingPath, nsAutoString& inFilePath, + bool removePathPrefix, bool removeInPathPrefix) { + if (removeInPathPrefix && + StringBeginsWith(inFilePath, kDevicePathSpecifier)) { + MOZ_ASSERT(!StringBeginsWith(workingPath, kDevicePathSpecifier)); + + inFilePath = Substring(inFilePath, kDevicePathSpecifier.Length()); + } else if (removePathPrefix && + StringBeginsWith(workingPath, kDevicePathSpecifier)) { + MOZ_ASSERT(!StringBeginsWith(inFilePath, kDevicePathSpecifier)); + + workingPath = Substring(workingPath, kDevicePathSpecifier.Length()); + } + + return _wcsicmp(workingPath.get(), inFilePath.get()) == 0; + }; + + if (equalPath(workingPath, inFilePath, removePathPrefix, + removeInPathPrefix)) { + *aResult = true; + return NS_OK; + } + + EnsureShortPath(); + lf->GetCanonicalPath(inFilePath); + workingPath = mShortWorkingPath; + *aResult = + equalPath(workingPath, inFilePath, removePathPrefix, removeInPathPrefix); + + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::Contains(nsIFile* aInFile, bool* aResult) { + // Check we are correctly initialized. + CHECK_mWorkingPath(); + + *aResult = false; + + nsAutoString myFilePath; + if (NS_FAILED(GetTarget(myFilePath))) { + GetPath(myFilePath); + } + + uint32_t myFilePathLen = myFilePath.Length(); + + nsAutoString inFilePath; + if (NS_FAILED(aInFile->GetTarget(inFilePath))) { + aInFile->GetPath(inFilePath); + } + + // Make sure that the |aInFile|'s path has a trailing separator. + if (inFilePath.Length() > myFilePathLen && + inFilePath[myFilePathLen] == L'\\') { + if (_wcsnicmp(myFilePath.get(), inFilePath.get(), myFilePathLen) == 0) { + *aResult = true; + } + } + + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::GetTarget(nsAString& aResult) { + aResult.Truncate(); + Resolve(); + + MOZ_ASSERT_IF( + mUseDOSDevicePathSyntax, + !FilePreferences::StartsWithDiskDesignatorAndBackslash(mResolvedPath)); + + aResult = mResolvedPath; + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::GetDirectoryEntriesImpl(nsIDirectoryEnumerator** aEntries) { + nsresult rv; + + *aEntries = nullptr; + if (mWorkingPath.EqualsLiteral("\\\\.")) { + RefPtr<nsDriveEnumerator> drives = + new nsDriveEnumerator(mUseDOSDevicePathSyntax); + rv = drives->Init(); + if (NS_FAILED(rv)) { + return rv; + } + drives.forget(aEntries); + return NS_OK; + } + + RefPtr<nsDirEnumerator> dirEnum = new nsDirEnumerator(); + rv = dirEnum->Init(this); + if (NS_FAILED(rv)) { + return rv; + } + + dirEnum.forget(aEntries); + + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::GetPersistentDescriptor(nsACString& aPersistentDescriptor) { + CopyUTF16toUTF8(mWorkingPath, aPersistentDescriptor); + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::SetPersistentDescriptor(const nsACString& aPersistentDescriptor) { + if (IsUtf8(aPersistentDescriptor)) { + return InitWithPath(NS_ConvertUTF8toUTF16(aPersistentDescriptor)); + } else { + return InitWithNativePath(aPersistentDescriptor); + } +} + +NS_IMETHODIMP +nsLocalFile::GetReadOnly(bool* aReadOnly) { + NS_ENSURE_ARG_POINTER(aReadOnly); + + DWORD dwAttrs = GetFileAttributesW(mWorkingPath.get()); + if (dwAttrs == INVALID_FILE_ATTRIBUTES) { + return NS_ERROR_FILE_INVALID_PATH; + } + + *aReadOnly = dwAttrs & FILE_ATTRIBUTE_READONLY; + + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::SetReadOnly(bool aReadOnly) { + DWORD dwAttrs = GetFileAttributesW(mWorkingPath.get()); + if (dwAttrs == INVALID_FILE_ATTRIBUTES) { + return NS_ERROR_FILE_INVALID_PATH; + } + + if (aReadOnly) { + dwAttrs |= FILE_ATTRIBUTE_READONLY; + } else { + dwAttrs &= ~FILE_ATTRIBUTE_READONLY; + } + + if (SetFileAttributesW(mWorkingPath.get(), dwAttrs) == 0) { + return NS_ERROR_FAILURE; + } + + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::GetUseDOSDevicePathSyntax(bool* aUseDOSDevicePathSyntax) { + MOZ_ASSERT(aUseDOSDevicePathSyntax); + + *aUseDOSDevicePathSyntax = mUseDOSDevicePathSyntax; + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::SetUseDOSDevicePathSyntax(bool aUseDOSDevicePathSyntax) { + if (mUseDOSDevicePathSyntax == aUseDOSDevicePathSyntax) { + return NS_OK; + } + + if (mUseDOSDevicePathSyntax) { + if (StringBeginsWith(mWorkingPath, kDevicePathSpecifier)) { + MakeDirty(); + // Remove the prefix + mWorkingPath = Substring(mWorkingPath, kDevicePathSpecifier.Length()); + } + } else { + if (FilePreferences::StartsWithDiskDesignatorAndBackslash(mWorkingPath)) { + MakeDirty(); + // Prepend the prefix + mWorkingPath = kDevicePathSpecifier + mWorkingPath; + } + } + + mUseDOSDevicePathSyntax = aUseDOSDevicePathSyntax; + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::Reveal() { + // This API should be main thread only + MOZ_ASSERT(NS_IsMainThread()); + + // make sure mResolvedPath is set + nsresult rv = Resolve(); + if (NS_FAILED(rv) && rv != NS_ERROR_FILE_NOT_FOUND) { + return rv; + } + + nsCOMPtr<nsIRunnable> task = + NS_NewRunnableFunction("nsLocalFile::Reveal", [path = mResolvedPath]() { + MOZ_ASSERT(!NS_IsMainThread(), "Don't run on the main thread"); + + bool doCoUninitialize = SUCCEEDED(CoInitializeEx( + nullptr, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE)); + RevealFile(path); + if (doCoUninitialize) { + CoUninitialize(); + } + }); + + return NS_DispatchBackgroundTask(task, + nsIEventTarget::DISPATCH_EVENT_MAY_BLOCK); +} + +NS_IMETHODIMP +nsLocalFile::GetWindowsFileAttributes(uint32_t* aAttrs) { + NS_ENSURE_ARG_POINTER(aAttrs); + + DWORD dwAttrs = ::GetFileAttributesW(mWorkingPath.get()); + if (dwAttrs == INVALID_FILE_ATTRIBUTES) { + return ConvertWinError(GetLastError()); + } + + *aAttrs = dwAttrs; + + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::SetWindowsFileAttributes(uint32_t aSetAttrs, + uint32_t aClearAttrs) { + DWORD dwAttrs = ::GetFileAttributesW(mWorkingPath.get()); + if (dwAttrs == INVALID_FILE_ATTRIBUTES) { + return ConvertWinError(GetLastError()); + } + + dwAttrs = (dwAttrs & ~aClearAttrs) | aSetAttrs; + + if (::SetFileAttributesW(mWorkingPath.get(), dwAttrs) == 0) { + return ConvertWinError(GetLastError()); + } + return NS_OK; +} + +NS_IMETHODIMP +nsLocalFile::Launch() { + // This API should be main thread only + MOZ_ASSERT(NS_IsMainThread()); + + // use the app registry name to launch a shell execute.... + _bstr_t execPath(mWorkingPath.get()); + + _variant_t args; + // Pass VT_ERROR/DISP_E_PARAMNOTFOUND to omit an optional RPC parameter + // to execute a file with the default verb. + _variant_t verbDefault(DISP_E_PARAMNOTFOUND, VT_ERROR); + _variant_t showCmd(SW_SHOWNORMAL); + + // Use the directory of the file we're launching as the working + // directory. That way if we have a self extracting EXE it won't + // suggest to extract to the install directory. + wchar_t* workingDirectoryPtr = nullptr; + WCHAR workingDirectory[MAX_PATH + 1] = {L'\0'}; + wcsncpy(workingDirectory, mWorkingPath.get(), MAX_PATH); + if (PathRemoveFileSpecW(workingDirectory)) { + workingDirectoryPtr = workingDirectory; + } else { + NS_WARNING("Could not set working directory for launched file."); + } + + // We have two methods to launch a file: ShellExecuteExW and + // ShellExecuteByExplorer. ShellExecuteExW starts a new process as a child + // of the current process, while ShellExecuteByExplorer starts a new process + // as a child of explorer.exe. + // + // We prefer launching a process via ShellExecuteByExplorer because + // applications may not support the mitigation policies inherited from our + // process. For example, Skype for Business does not start correctly with + // the PreferSystem32Images policy which is one of the policies we use. + // + // If ShellExecuteByExplorer fails for some reason e.g. a system without + // running explorer.exe or VDI environment like Citrix, we fall back to + // ShellExecuteExW which still works in those special environments. + // + // There is an exception where we go straight to ShellExecuteExW without + // trying ShellExecuteByExplorer. When the extension of a downloaded file is + // "exe", we prefer security rather than compatibility. + // + // When a user launches a downloaded executable, the directory containing + // the downloaded file may contain a malicious DLL with a common name, which + // may have been downloaded before. If the downloaded executable is launched + // without the PreferSystem32Images policy, the process can be tricked into + // loading the malicious DLL in the same directory if its name is in the + // executable's dependent modules. Therefore, we always launch ".exe" + // executables via ShellExecuteExW so they inherit our process's mitigation + // policies including PreferSystem32Images. + // + // If the extension is not "exe", then we assume that we are launching an + // installed application, and therefore the security risk described above + // is lessened, as a malicious DLL is less likely to be installed in the + // application's directory. In that case, we attempt to preserve + // compatibility and try ShellExecuteByExplorer first. + + static const char* const onlyExeExt[] = {".exe"}; + bool isExecutable; + nsresult rv = + LookupExtensionIn(onlyExeExt, ArrayLength(onlyExeExt), &isExecutable); + if (NS_FAILED(rv)) { + isExecutable = false; + } + + // If the file is an executable, go straight to ShellExecuteExW. + // Otherwise try ShellExecuteByExplorer first, and if it fails, + // run ShellExecuteExW. + if (!isExecutable) { + mozilla::LauncherVoidResult shellExecuteOk = + mozilla::ShellExecuteByExplorer(execPath, args, verbDefault, + workingDirectoryPtr, showCmd); + if (shellExecuteOk.isOk()) { + return NS_OK; + } + } + + SHELLEXECUTEINFOW seinfo = {sizeof(SHELLEXECUTEINFOW)}; + seinfo.fMask = SEE_MASK_ASYNCOK; + seinfo.hwnd = GetMostRecentNavigatorHWND(); + seinfo.lpVerb = nullptr; + seinfo.lpFile = mWorkingPath.get(); + seinfo.lpParameters = nullptr; + seinfo.lpDirectory = workingDirectoryPtr; + seinfo.nShow = SW_SHOWNORMAL; + + if (!ShellExecuteExW(&seinfo)) { + return NS_ERROR_FILE_EXECUTION_FAILED; + } + + return NS_OK; +} + +nsresult NS_NewLocalFile(const nsAString& aPath, bool aFollowLinks, + nsIFile** aResult) { + RefPtr<nsLocalFile> file = new nsLocalFile(); + + if (!aPath.IsEmpty()) { + nsresult rv = file->InitWithPath(aPath); + if (NS_FAILED(rv)) { + return rv; + } + } + + file.forget(aResult); + return NS_OK; +} + +//----------------------------------------------------------------------------- +// Native (lossy) interface +//----------------------------------------------------------------------------- + +NS_IMETHODIMP +nsLocalFile::InitWithNativePath(const nsACString& aFilePath) { + nsAutoString tmp; + nsresult rv = NS_CopyNativeToUnicode(aFilePath, tmp); + if (NS_SUCCEEDED(rv)) { + return InitWithPath(tmp); + } + + return rv; +} + +NS_IMETHODIMP +nsLocalFile::AppendNative(const nsACString& aNode) { + nsAutoString tmp; + nsresult rv = NS_CopyNativeToUnicode(aNode, tmp); + if (NS_SUCCEEDED(rv)) { + return Append(tmp); + } + + return rv; +} + +NS_IMETHODIMP +nsLocalFile::AppendRelativeNativePath(const nsACString& aNode) { + nsAutoString tmp; + nsresult rv = NS_CopyNativeToUnicode(aNode, tmp); + if (NS_SUCCEEDED(rv)) { + return AppendRelativePath(tmp); + } + return rv; +} + +NS_IMETHODIMP +nsLocalFile::GetNativeLeafName(nsACString& aLeafName) { + // NS_WARNING("This API is lossy. Use GetLeafName !"); + nsAutoString tmp; + nsresult rv = GetLeafName(tmp); + if (NS_SUCCEEDED(rv)) { + rv = NS_CopyUnicodeToNative(tmp, aLeafName); + } + + return rv; +} + +NS_IMETHODIMP +nsLocalFile::SetNativeLeafName(const nsACString& aLeafName) { + nsAutoString tmp; + nsresult rv = NS_CopyNativeToUnicode(aLeafName, tmp); + if (NS_SUCCEEDED(rv)) { + return SetLeafName(tmp); + } + + return rv; +} + +nsString nsLocalFile::NativePath() { return mWorkingPath; } + +nsCString nsIFile::HumanReadablePath() { + nsString path; + DebugOnly<nsresult> rv = GetPath(path); + MOZ_ASSERT(NS_SUCCEEDED(rv)); + return NS_ConvertUTF16toUTF8(path); +} + +NS_IMETHODIMP +nsLocalFile::CopyToNative(nsIFile* aNewParentDir, const nsACString& aNewName) { + // Check we are correctly initialized. + CHECK_mWorkingPath(); + + if (aNewName.IsEmpty()) { + return CopyTo(aNewParentDir, u""_ns); + } + + nsAutoString tmp; + nsresult rv = NS_CopyNativeToUnicode(aNewName, tmp); + if (NS_SUCCEEDED(rv)) { + return CopyTo(aNewParentDir, tmp); + } + + return rv; +} + +NS_IMETHODIMP +nsLocalFile::CopyToFollowingLinksNative(nsIFile* aNewParentDir, + const nsACString& aNewName) { + if (aNewName.IsEmpty()) { + return CopyToFollowingLinks(aNewParentDir, u""_ns); + } + + nsAutoString tmp; + nsresult rv = NS_CopyNativeToUnicode(aNewName, tmp); + if (NS_SUCCEEDED(rv)) { + return CopyToFollowingLinks(aNewParentDir, tmp); + } + + return rv; +} + +NS_IMETHODIMP +nsLocalFile::MoveToNative(nsIFile* aNewParentDir, const nsACString& aNewName) { + // Check we are correctly initialized. + CHECK_mWorkingPath(); + + if (aNewName.IsEmpty()) { + return MoveTo(aNewParentDir, u""_ns); + } + + nsAutoString tmp; + nsresult rv = NS_CopyNativeToUnicode(aNewName, tmp); + if (NS_SUCCEEDED(rv)) { + return MoveTo(aNewParentDir, tmp); + } + + return rv; +} + +NS_IMETHODIMP +nsLocalFile::MoveToFollowingLinksNative(nsIFile* aNewParentDir, + const nsACString& aNewName) { + // Check we are correctly initialized. + CHECK_mWorkingPath(); + + if (aNewName.IsEmpty()) { + return MoveToFollowingLinks(aNewParentDir, u""_ns); + } + + nsAutoString tmp; + nsresult rv = NS_CopyNativeToUnicode(aNewName, tmp); + if (NS_SUCCEEDED(rv)) { + return MoveToFollowingLinks(aNewParentDir, tmp); + } + + return rv; +} + +NS_IMETHODIMP +nsLocalFile::GetNativeTarget(nsACString& aResult) { + // Check we are correctly initialized. + CHECK_mWorkingPath(); + + NS_WARNING("This API is lossy. Use GetTarget !"); + nsAutoString tmp; + nsresult rv = GetTarget(tmp); + if (NS_SUCCEEDED(rv)) { + rv = NS_CopyUnicodeToNative(tmp, aResult); + } + + return rv; +} + +nsresult NS_NewNativeLocalFile(const nsACString& aPath, bool aFollowLinks, + nsIFile** aResult) { + nsAutoString buf; + nsresult rv = NS_CopyNativeToUnicode(aPath, buf); + if (NS_FAILED(rv)) { + *aResult = nullptr; + return rv; + } + return NS_NewLocalFile(buf, aFollowLinks, aResult); +} + +void nsLocalFile::EnsureShortPath() { + if (!mShortWorkingPath.IsEmpty()) { + return; + } + + WCHAR shortPath[MAX_PATH + 1]; + DWORD lengthNeeded = ::GetShortPathNameW(mWorkingPath.get(), shortPath, + ArrayLength(shortPath)); + // If an error occurred then lengthNeeded is set to 0 or the length of the + // needed buffer including null termination. If it succeeds the number of + // wide characters not including null termination is returned. + if (lengthNeeded != 0 && lengthNeeded < ArrayLength(shortPath)) { + mShortWorkingPath.Assign(shortPath); + } else { + mShortWorkingPath.Assign(mWorkingPath); + } +} + +NS_IMPL_ISUPPORTS_INHERITED(nsDriveEnumerator, nsSimpleEnumerator, + nsIDirectoryEnumerator) + +nsDriveEnumerator::nsDriveEnumerator(bool aUseDOSDevicePathSyntax) + : mUseDOSDevicePathSyntax(aUseDOSDevicePathSyntax) {} + +nsDriveEnumerator::~nsDriveEnumerator() {} + +nsresult nsDriveEnumerator::Init() { + /* If the length passed to GetLogicalDriveStrings is smaller + * than the length of the string it would return, it returns + * the length required for the string. */ + DWORD length = GetLogicalDriveStringsW(0, 0); + /* The string is null terminated */ + if (!mDrives.SetLength(length + 1, fallible)) { + return NS_ERROR_OUT_OF_MEMORY; + } + if (!GetLogicalDriveStringsW(length, mDrives.get())) { + return NS_ERROR_FAILURE; + } + mDrives.BeginReading(mStartOfCurrentDrive); + mDrives.EndReading(mEndOfDrivesString); + return NS_OK; +} + +NS_IMETHODIMP +nsDriveEnumerator::HasMoreElements(bool* aHasMore) { + *aHasMore = *mStartOfCurrentDrive != L'\0'; + return NS_OK; +} + +NS_IMETHODIMP +nsDriveEnumerator::GetNext(nsISupports** aNext) { + /* GetLogicalDrives stored in mDrives is a concatenation + * of null terminated strings, followed by a null terminator. + * mStartOfCurrentDrive is an iterator pointing at the first + * character of the current drive. */ + if (*mStartOfCurrentDrive == L'\0') { + *aNext = nullptr; + return NS_ERROR_FAILURE; + } + + nsAString::const_iterator driveEnd = mStartOfCurrentDrive; + FindCharInReadable(L'\0', driveEnd, mEndOfDrivesString); + nsString drive(Substring(mStartOfCurrentDrive, driveEnd)); + mStartOfCurrentDrive = ++driveEnd; + + nsIFile* file; + nsresult rv = NewLocalFile(drive, mUseDOSDevicePathSyntax, &file); + + *aNext = file; + return rv; +} |