diff options
Diffstat (limited to 'src/corelib/io/qsettings_win.cpp')
| -rw-r--r-- | src/corelib/io/qsettings_win.cpp | 120 |
1 files changed, 73 insertions, 47 deletions
diff --git a/src/corelib/io/qsettings_win.cpp b/src/corelib/io/qsettings_win.cpp index 1546219c3b..88f58422a8 100644 --- a/src/corelib/io/qsettings_win.cpp +++ b/src/corelib/io/qsettings_win.cpp @@ -41,6 +41,18 @@ #include "qdebug.h" #include <qt_windows.h> +// See "Accessing an Alternate Registry View" at: +// http://msdn.microsoft.com/en-us/library/aa384129%28VS.85%29.aspx +#ifndef KEY_WOW64_64KEY + // Access a 32-bit key from either a 32-bit or 64-bit application. +# define KEY_WOW64_64KEY 0x0100 +#endif + +#ifndef KEY_WOW64_32KEY + // Access a 64-bit key from either a 32-bit or 64-bit application. +# define KEY_WOW64_32KEY 0x0200 +#endif + QT_BEGIN_NAMESPACE /* Keys are stored in QStrings. If the variable name starts with 'u', this is a "user" @@ -135,12 +147,13 @@ static QString errorCodeToString(DWORD errorCode) return result; } -// Open a key with the specified perms -static HKEY openKey(HKEY parentHandle, REGSAM perms, const QString &rSubKey) +// Open a key with the specified "perms". +// "access" is to explicitly use the 32- or 64-bit branch. +static HKEY openKey(HKEY parentHandle, REGSAM perms, const QString &rSubKey, REGSAM access = 0) { HKEY resultHandle = 0; LONG res = RegOpenKeyEx(parentHandle, reinterpret_cast<const wchar_t *>(rSubKey.utf16()), - 0, perms, &resultHandle); + 0, perms | access, &resultHandle); if (res == ERROR_SUCCESS) return resultHandle; @@ -148,17 +161,18 @@ static HKEY openKey(HKEY parentHandle, REGSAM perms, const QString &rSubKey) return 0; } -// Open a key with the specified perms, create it if it does not exist -static HKEY createOrOpenKey(HKEY parentHandle, REGSAM perms, const QString &rSubKey) +// Open a key with the specified "perms", create it if it does not exist. +// "access" is to explicitly use the 32- or 64-bit branch. +static HKEY createOrOpenKey(HKEY parentHandle, REGSAM perms, const QString &rSubKey, REGSAM access = 0) { // try to open it - HKEY resultHandle = openKey(parentHandle, perms, rSubKey); + HKEY resultHandle = openKey(parentHandle, perms, rSubKey, access); if (resultHandle != 0) return resultHandle; // try to create it LONG res = RegCreateKeyEx(parentHandle, reinterpret_cast<const wchar_t *>(rSubKey.utf16()), 0, 0, - REG_OPTION_NON_VOLATILE, perms, 0, &resultHandle, 0); + REG_OPTION_NON_VOLATILE, perms | access, 0, &resultHandle, 0); if (res == ERROR_SUCCESS) return resultHandle; @@ -169,11 +183,12 @@ static HKEY createOrOpenKey(HKEY parentHandle, REGSAM perms, const QString &rSub return 0; } -// Open or create a key in read-write mode if possible, otherwise read-only -static HKEY createOrOpenKey(HKEY parentHandle, const QString &rSubKey, bool *readOnly) +// Open or create a key in read-write mode if possible, otherwise read-only. +// "access" is to explicitly use the 32- or 64-bit branch. +static HKEY createOrOpenKey(HKEY parentHandle, const QString &rSubKey, bool *readOnly, REGSAM access = 0) { // try to open or create it read/write - HKEY resultHandle = createOrOpenKey(parentHandle, registryPermissions, rSubKey); + HKEY resultHandle = createOrOpenKey(parentHandle, registryPermissions, rSubKey, access); if (resultHandle != 0) { if (readOnly != 0) *readOnly = false; @@ -181,7 +196,7 @@ static HKEY createOrOpenKey(HKEY parentHandle, const QString &rSubKey, bool *rea } // try to open or create it read/only - resultHandle = createOrOpenKey(parentHandle, KEY_READ, rSubKey); + resultHandle = createOrOpenKey(parentHandle, KEY_READ, rSubKey, access); if (resultHandle != 0) { if (readOnly != 0) *readOnly = true; @@ -247,9 +262,9 @@ static QStringList childKeysOrGroups(HKEY parentHandle, QSettingsPrivate::ChildS return result; } -static void allKeys(HKEY parentHandle, const QString &rSubKey, NameSet *result) +static void allKeys(HKEY parentHandle, const QString &rSubKey, NameSet *result, REGSAM access = 0) { - HKEY handle = openKey(parentHandle, KEY_READ, rSubKey); + HKEY handle = openKey(parentHandle, KEY_READ, rSubKey, access); if (handle == 0) return; @@ -270,11 +285,11 @@ static void allKeys(HKEY parentHandle, const QString &rSubKey, NameSet *result) if (!s.isEmpty()) s += QLatin1Char('\\'); s += childGroups.at(i); - allKeys(parentHandle, s, result); + allKeys(parentHandle, s, result, access); } } -static void deleteChildGroups(HKEY parentHandle) +static void deleteChildGroups(HKEY parentHandle, REGSAM access = 0) { QStringList childGroups = childKeysOrGroups(parentHandle, QSettingsPrivate::ChildGroups); @@ -282,10 +297,10 @@ static void deleteChildGroups(HKEY parentHandle) QString group = childGroups.at(i); // delete subgroups in group - HKEY childGroupHandle = openKey(parentHandle, registryPermissions, group); + HKEY childGroupHandle = openKey(parentHandle, registryPermissions, group, access); if (childGroupHandle == 0) continue; - deleteChildGroups(childGroupHandle); + deleteChildGroups(childGroupHandle, access); RegCloseKey(childGroupHandle); // delete group itself @@ -305,7 +320,7 @@ static void deleteChildGroups(HKEY parentHandle) class RegistryKey { public: - RegistryKey(HKEY parent_handle = 0, const QString &key = QString(), bool read_only = true); + RegistryKey(HKEY parent_handle = 0, const QString &key = QString(), bool read_only = true, REGSAM access = 0); QString key() const; HKEY handle() const; HKEY parentHandle() const; @@ -316,13 +331,15 @@ private: mutable HKEY m_handle; QString m_key; mutable bool m_read_only; + REGSAM m_access; }; -RegistryKey::RegistryKey(HKEY parent_handle, const QString &key, bool read_only) +RegistryKey::RegistryKey(HKEY parent_handle, const QString &key, bool read_only, REGSAM access) : m_parent_handle(parent_handle), m_handle(0), m_key(key), - m_read_only(read_only) + m_read_only(read_only), + m_access(access) { } @@ -337,9 +354,9 @@ HKEY RegistryKey::handle() const return m_handle; if (m_read_only) - m_handle = openKey(m_parent_handle, KEY_READ, m_key); + m_handle = openKey(m_parent_handle, KEY_READ, m_key, m_access); else - m_handle = createOrOpenKey(m_parent_handle, m_key, &m_read_only); + m_handle = createOrOpenKey(m_parent_handle, m_key, &m_read_only, m_access); return m_handle; } @@ -371,8 +388,8 @@ class QWinSettingsPrivate : public QSettingsPrivate { public: QWinSettingsPrivate(QSettings::Scope scope, const QString &organization, - const QString &application); - QWinSettingsPrivate(QString rKey); + const QString &application, REGSAM access = 0); + QWinSettingsPrivate(QString rKey, REGSAM access = 0); ~QWinSettingsPrivate(); void remove(const QString &uKey); @@ -390,11 +407,13 @@ public: private: RegistryKeyList regList; // list of registry locations to search for keys bool deleteWriteHandleOnExit; + REGSAM access; }; QWinSettingsPrivate::QWinSettingsPrivate(QSettings::Scope scope, const QString &organization, - const QString &application) - : QSettingsPrivate(QSettings::NativeFormat, scope, organization, application) + const QString &application, REGSAM access) + : QSettingsPrivate(QSettings::NativeFormat, scope, organization, application), + access(access) { deleteWriteHandleOnExit = false; @@ -405,23 +424,24 @@ QWinSettingsPrivate::QWinSettingsPrivate(QSettings::Scope scope, const QString & if (scope == QSettings::UserScope) { if (!application.isEmpty()) - regList.append(RegistryKey(HKEY_CURRENT_USER, appPrefix, !regList.isEmpty())); + regList.append(RegistryKey(HKEY_CURRENT_USER, appPrefix, !regList.isEmpty(), access)); - regList.append(RegistryKey(HKEY_CURRENT_USER, orgPrefix, !regList.isEmpty())); + regList.append(RegistryKey(HKEY_CURRENT_USER, orgPrefix, !regList.isEmpty(), access)); } if (!application.isEmpty()) - regList.append(RegistryKey(HKEY_LOCAL_MACHINE, appPrefix, !regList.isEmpty())); + regList.append(RegistryKey(HKEY_LOCAL_MACHINE, appPrefix, !regList.isEmpty(), access)); - regList.append(RegistryKey(HKEY_LOCAL_MACHINE, orgPrefix, !regList.isEmpty())); + regList.append(RegistryKey(HKEY_LOCAL_MACHINE, orgPrefix, !regList.isEmpty(), access)); } if (regList.isEmpty()) setStatus(QSettings::AccessError); } -QWinSettingsPrivate::QWinSettingsPrivate(QString rPath) - : QSettingsPrivate(QSettings::NativeFormat) +QWinSettingsPrivate::QWinSettingsPrivate(QString rPath, REGSAM access) + : QSettingsPrivate(QSettings::NativeFormat), + access(access) { deleteWriteHandleOnExit = false; @@ -460,9 +480,9 @@ QWinSettingsPrivate::QWinSettingsPrivate(QString rPath) } if (rPath.length() == keyLength) - regList.append(RegistryKey(keyName, QString(), false)); + regList.append(RegistryKey(keyName, QString(), false, access)); else if (rPath[keyLength] == QLatin1Char('\\')) - regList.append(RegistryKey(keyName, rPath.mid(keyLength+1), false)); + regList.append(RegistryKey(keyName, rPath.mid(keyLength+1), false, access)); } bool QWinSettingsPrivate::readKey(HKEY parentHandle, const QString &rSubKey, QVariant *value) const @@ -471,7 +491,7 @@ bool QWinSettingsPrivate::readKey(HKEY parentHandle, const QString &rSubKey, QVa QString rSubkeyPath = keyPath(rSubKey); // open a handle on the subkey - HKEY handle = openKey(parentHandle, KEY_READ, rSubkeyPath); + HKEY handle = openKey(parentHandle, KEY_READ, rSubkeyPath, access); if (handle == 0) return false; @@ -604,16 +624,16 @@ void QWinSettingsPrivate::remove(const QString &uKey) // try to delete value bar in key foo LONG res; - HKEY handle = openKey(writeHandle(), registryPermissions, keyPath(rKey)); + HKEY handle = openKey(writeHandle(), registryPermissions, keyPath(rKey), access); if (handle != 0) { res = RegDeleteValue(handle, reinterpret_cast<const wchar_t *>(keyName(rKey).utf16())); RegCloseKey(handle); } // try to delete key foo/bar and all subkeys - handle = openKey(writeHandle(), registryPermissions, rKey); + handle = openKey(writeHandle(), registryPermissions, rKey, access); if (handle != 0) { - deleteChildGroups(handle); + deleteChildGroups(handle, access); if (rKey.isEmpty()) { QStringList childKeys = childKeysOrGroups(handle, QSettingsPrivate::ChildKeys); @@ -661,7 +681,7 @@ void QWinSettingsPrivate::set(const QString &uKey, const QVariant &value) QString rKey = escapedKey(uKey); - HKEY handle = createOrOpenKey(writeHandle(), registryPermissions, keyPath(rKey)); + HKEY handle = createOrOpenKey(writeHandle(), registryPermissions, keyPath(rKey), access); if (handle == 0) { setStatus(QSettings::AccessError); return; @@ -775,13 +795,13 @@ QStringList QWinSettingsPrivate::children(const QString &uKey, ChildSpec spec) c HKEY parent_handle = regList.at(i).handle(); if (parent_handle == 0) continue; - HKEY handle = openKey(parent_handle, KEY_READ, rKey); + HKEY handle = openKey(parent_handle, KEY_READ, rKey, access); if (handle == 0) continue; if (spec == AllKeys) { NameSet keys; - allKeys(handle, QLatin1String(""), &keys); + allKeys(handle, QLatin1String(""), &keys, access); mergeKeySets(&result, keys); } else { // ChildGroups or ChildKeys QStringList names = childKeysOrGroups(handle, spec); @@ -836,20 +856,26 @@ bool QWinSettingsPrivate::isWritable() const QSettingsPrivate *QSettingsPrivate::create(QSettings::Format format, QSettings::Scope scope, const QString &organization, const QString &application) { - if (format == QSettings::NativeFormat) { + if (format == QSettings::NativeFormat) return new QWinSettingsPrivate(scope, organization, application); - } else { + else if (format == QSettings::Registry32Format) + return new QWinSettingsPrivate(scope, organization, application, KEY_WOW64_32KEY); + else if (format == QSettings::Registry64Format) + return new QWinSettingsPrivate(scope, organization, application, KEY_WOW64_64KEY); + else return new QConfFileSettingsPrivate(format, scope, organization, application); - } } QSettingsPrivate *QSettingsPrivate::create(const QString &fileName, QSettings::Format format) { - if (format == QSettings::NativeFormat) { + if (format == QSettings::NativeFormat) return new QWinSettingsPrivate(fileName); - } else { + else if (format == QSettings::Registry32Format) + return new QWinSettingsPrivate(fileName, KEY_WOW64_32KEY); + else if (format == QSettings::Registry64Format) + return new QWinSettingsPrivate(fileName, KEY_WOW64_64KEY); + else return new QConfFileSettingsPrivate(fileName, format); - } } QT_END_NAMESPACE |