| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the qmake application of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:GPL-EXCEPT$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
| ** Software or, alternatively, in accordance with the terms contained in |
| ** a written agreement between you and The Qt Company. For licensing terms |
| ** and conditions see https://www.qt.io/terms-conditions. For further |
| ** information use the contact form at https://www.qt.io/contact-us. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "ioutils.h" |
| |
| #include <qdir.h> |
| #include <qfile.h> |
| #include <qregexp.h> |
| |
| #ifdef Q_OS_WIN |
| # include <windows.h> |
| #else |
| # include <sys/types.h> |
| # include <sys/stat.h> |
| # include <unistd.h> |
| # include <utime.h> |
| # include <fcntl.h> |
| # include <errno.h> |
| #endif |
| |
| #define fL1S(s) QString::fromLatin1(s) |
| |
| QT_BEGIN_NAMESPACE |
| |
| using namespace QMakeInternal; |
| |
| IoUtils::FileType IoUtils::fileType(const QString &fileName) |
| { |
| Q_ASSERT(fileName.isEmpty() || isAbsolutePath(fileName)); |
| #ifdef Q_OS_WIN |
| DWORD attr = GetFileAttributesW((WCHAR*)fileName.utf16()); |
| if (attr == INVALID_FILE_ATTRIBUTES) |
| return FileNotFound; |
| return (attr & FILE_ATTRIBUTE_DIRECTORY) ? FileIsDir : FileIsRegular; |
| #else |
| struct ::stat st; |
| if (::stat(fileName.toLocal8Bit().constData(), &st)) |
| return FileNotFound; |
| return S_ISDIR(st.st_mode) ? FileIsDir : S_ISREG(st.st_mode) ? FileIsRegular : FileNotFound; |
| #endif |
| } |
| |
| bool IoUtils::isRelativePath(const QString &path) |
| { |
| #ifdef QMAKE_BUILTIN_PRFS |
| if (path.startsWith(QLatin1String(":/"))) |
| return false; |
| #endif |
| #ifdef Q_OS_WIN |
| // Unlike QFileInfo, this considers only paths with both a drive prefix and |
| // a subsequent (back-)slash absolute: |
| if (path.length() >= 3 && path.at(1) == QLatin1Char(':') && path.at(0).isLetter() |
| && (path.at(2) == QLatin1Char('/') || path.at(2) == QLatin1Char('\\'))) { |
| return false; |
| } |
| // ... unless, of course, they're UNC: |
| if (path.length() >= 2 |
| && (path.at(0).unicode() == '\\' || path.at(0).unicode() == '/') |
| && path.at(1) == path.at(0)) { |
| return false; |
| } |
| #else |
| if (path.startsWith(QLatin1Char('/'))) |
| return false; |
| #endif // Q_OS_WIN |
| return true; |
| } |
| |
| QStringRef IoUtils::pathName(const QString &fileName) |
| { |
| return fileName.leftRef(fileName.lastIndexOf(QLatin1Char('/')) + 1); |
| } |
| |
| QStringRef IoUtils::fileName(const QString &fileName) |
| { |
| return fileName.midRef(fileName.lastIndexOf(QLatin1Char('/')) + 1); |
| } |
| |
| QString IoUtils::resolvePath(const QString &baseDir, const QString &fileName) |
| { |
| if (fileName.isEmpty()) |
| return QString(); |
| if (isAbsolutePath(fileName)) |
| return QDir::cleanPath(fileName); |
| #ifdef Q_OS_WIN // Add drive to otherwise-absolute path: |
| if (fileName.at(0).unicode() == '/' || fileName.at(0).unicode() == '\\') { |
| Q_ASSERT_X(isAbsolutePath(baseDir), "IoUtils::resolvePath", qUtf8Printable(baseDir)); |
| return QDir::cleanPath(baseDir.left(2) + fileName); |
| } |
| #endif // Q_OS_WIN |
| return QDir::cleanPath(baseDir + QLatin1Char('/') + fileName); |
| } |
| |
| inline static |
| bool isSpecialChar(ushort c, const uchar (&iqm)[16]) |
| { |
| if ((c < sizeof(iqm) * 8) && (iqm[c / 8] & (1 << (c & 7)))) |
| return true; |
| return false; |
| } |
| |
| inline static |
| bool hasSpecialChars(const QString &arg, const uchar (&iqm)[16]) |
| { |
| for (int x = arg.length() - 1; x >= 0; --x) { |
| if (isSpecialChar(arg.unicode()[x].unicode(), iqm)) |
| return true; |
| } |
| return false; |
| } |
| |
| QString IoUtils::shellQuoteUnix(const QString &arg) |
| { |
| // Chars that should be quoted (TM). This includes: |
| static const uchar iqm[] = { |
| 0xff, 0xff, 0xff, 0xff, 0xdf, 0x07, 0x00, 0xd8, |
| 0x00, 0x00, 0x00, 0x38, 0x01, 0x00, 0x00, 0x78 |
| }; // 0-32 \'"$`<>|;&(){}*?#!~[] |
| |
| if (!arg.length()) |
| return QString::fromLatin1("''"); |
| |
| QString ret(arg); |
| if (hasSpecialChars(ret, iqm)) { |
| ret.replace(QLatin1Char('\''), QLatin1String("'\\''")); |
| ret.prepend(QLatin1Char('\'')); |
| ret.append(QLatin1Char('\'')); |
| } |
| return ret; |
| } |
| |
| QString IoUtils::shellQuoteWin(const QString &arg) |
| { |
| // Chars that should be quoted (TM). This includes: |
| // - control chars & space |
| // - the shell meta chars "&()<>^| |
| // - the potential separators ,;= |
| static const uchar iqm[] = { |
| 0xff, 0xff, 0xff, 0xff, 0x45, 0x13, 0x00, 0x78, |
| 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x10 |
| }; |
| // Shell meta chars that need escaping. |
| static const uchar ism[] = { |
| 0x00, 0x00, 0x00, 0x00, 0x40, 0x03, 0x00, 0x50, |
| 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x10 |
| }; // &()<>^| |
| |
| if (!arg.length()) |
| return QString::fromLatin1("\"\""); |
| |
| QString ret(arg); |
| if (hasSpecialChars(ret, iqm)) { |
| // The process-level standard quoting allows escaping quotes with backslashes (note |
| // that backslashes don't escape themselves, unless they are followed by a quote). |
| // Consequently, quotes are escaped and their preceding backslashes are doubled. |
| ret.replace(QRegExp(QLatin1String("(\\\\*)\"")), QLatin1String("\\1\\1\\\"")); |
| // Trailing backslashes must be doubled as well, as they are followed by a quote. |
| ret.replace(QRegExp(QLatin1String("(\\\\+)$")), QLatin1String("\\1\\1")); |
| // However, the shell also interprets the command, and no backslash-escaping exists |
| // there - a quote always toggles the quoting state, but is nonetheless passed down |
| // to the called process verbatim. In the unquoted state, the circumflex escapes |
| // meta chars (including itself and quotes), and is removed from the command. |
| bool quoted = true; |
| for (int i = 0; i < ret.length(); i++) { |
| QChar c = ret.unicode()[i]; |
| if (c.unicode() == '"') |
| quoted = !quoted; |
| else if (!quoted && isSpecialChar(c.unicode(), ism)) |
| ret.insert(i++, QLatin1Char('^')); |
| } |
| if (!quoted) |
| ret.append(QLatin1Char('^')); |
| ret.append(QLatin1Char('"')); |
| ret.prepend(QLatin1Char('"')); |
| } |
| return ret; |
| } |
| |
| #if defined(PROEVALUATOR_FULL) |
| |
| # if defined(Q_OS_WIN) |
| static QString windowsErrorCode() |
| { |
| wchar_t *string = nullptr; |
| FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM, |
| NULL, |
| GetLastError(), |
| MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), |
| (LPWSTR)&string, |
| 0, |
| NULL); |
| QString ret = QString::fromWCharArray(string); |
| LocalFree((HLOCAL)string); |
| return ret.trimmed(); |
| } |
| # endif |
| |
| bool IoUtils::touchFile(const QString &targetFileName, const QString &referenceFileName, QString *errorString) |
| { |
| # ifdef Q_OS_UNIX |
| struct stat st; |
| if (stat(referenceFileName.toLocal8Bit().constData(), &st)) { |
| *errorString = fL1S("Cannot stat() reference file %1: %2.").arg(referenceFileName, fL1S(strerror(errno))); |
| return false; |
| } |
| # if defined(_POSIX_VERSION) && _POSIX_VERSION >= 200809L |
| const struct timespec times[2] = { { 0, UTIME_NOW }, st.st_mtim }; |
| const bool utimeError = utimensat(AT_FDCWD, targetFileName.toLocal8Bit().constData(), times, 0) < 0; |
| # else |
| struct utimbuf utb; |
| utb.actime = time(0); |
| utb.modtime = st.st_mtime; |
| const bool utimeError= utime(targetFileName.toLocal8Bit().constData(), &utb) < 0; |
| # endif |
| if (utimeError) { |
| *errorString = fL1S("Cannot touch %1: %2.").arg(targetFileName, fL1S(strerror(errno))); |
| return false; |
| } |
| # else |
| HANDLE rHand = CreateFile((wchar_t*)referenceFileName.utf16(), |
| GENERIC_READ, FILE_SHARE_READ, |
| NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); |
| if (rHand == INVALID_HANDLE_VALUE) { |
| *errorString = fL1S("Cannot open reference file %1: %2").arg(referenceFileName, windowsErrorCode()); |
| return false; |
| } |
| FILETIME ft; |
| GetFileTime(rHand, NULL, NULL, &ft); |
| CloseHandle(rHand); |
| HANDLE wHand = CreateFile((wchar_t*)targetFileName.utf16(), |
| GENERIC_WRITE, FILE_SHARE_READ, |
| NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); |
| if (wHand == INVALID_HANDLE_VALUE) { |
| *errorString = fL1S("Cannot open %1: %2").arg(targetFileName, windowsErrorCode()); |
| return false; |
| } |
| SetFileTime(wHand, NULL, NULL, &ft); |
| CloseHandle(wHand); |
| # endif |
| return true; |
| } |
| |
| #if defined(QT_BUILD_QMAKE) && defined(Q_OS_UNIX) |
| bool IoUtils::readLinkTarget(const QString &symlinkPath, QString *target) |
| { |
| const QByteArray localSymlinkPath = QFile::encodeName(symlinkPath); |
| # if defined(__GLIBC__) && !defined(PATH_MAX) |
| # define PATH_CHUNK_SIZE 256 |
| char *s = 0; |
| int len = -1; |
| int size = PATH_CHUNK_SIZE; |
| |
| forever { |
| s = (char *)::realloc(s, size); |
| len = ::readlink(localSymlinkPath.constData(), s, size); |
| if (len < 0) { |
| ::free(s); |
| break; |
| } |
| if (len < size) |
| break; |
| size *= 2; |
| } |
| # else |
| char s[PATH_MAX+1]; |
| int len = readlink(localSymlinkPath.constData(), s, PATH_MAX); |
| # endif |
| if (len <= 0) |
| return false; |
| *target = QFile::decodeName(QByteArray(s, len)); |
| # if defined(__GLIBC__) && !defined(PATH_MAX) |
| ::free(s); |
| # endif |
| return true; |
| } |
| #endif |
| |
| #endif // PROEVALUATOR_FULL |
| |
| QT_END_NAMESPACE |