diff options
author | Thiago Macieira <thiago.macieira@intel.com> | 2011-10-13 22:49:19 +0200 |
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committer | Qt by Nokia <qt-info@nokia.com> | 2012-03-28 16:31:34 +0200 |
commit | 70db6233e7685e1b76e038f9baf25d1c70baa9aa (patch) | |
tree | ee11e2e8caf221d24fad8a3f4ccfd9bf2302768d /src/corelib/io/qipaddress.cpp | |
parent | 7adbc9b2341e5443427d7e33ddf7f9e2ed5de5a0 (diff) |
Add a function to parse IPv4 addresses in QtCore
In the unit test, check against inet_aton on Linux with GLIBC
only. Other platforms have this function too, but they sometimes have
different behaviour, so don't try to test them equally.
Change-Id: I1a77e405ac7e713d4cf1cee03ea5ce17fb47feef
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
Reviewed-by: Shane Kearns <shane.kearns@accenture.com>
Diffstat (limited to 'src/corelib/io/qipaddress.cpp')
-rw-r--r-- | src/corelib/io/qipaddress.cpp | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/src/corelib/io/qipaddress.cpp b/src/corelib/io/qipaddress.cpp new file mode 100644 index 0000000000..b8871fe8b9 --- /dev/null +++ b/src/corelib/io/qipaddress.cpp @@ -0,0 +1,131 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Intel Corporation +** Contact: http://www.qt-project.org/ +** +** This file is part of the QtCore module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qipaddress_p.h" +#include "private/qlocale_tools_p.h" +#include "qvarlengtharray.h" + +QT_BEGIN_NAMESPACE +namespace QIPAddressUtils { + +static QString number(quint8 val, int base = 10) +{ + QChar zero(0x30); + return val ? qulltoa(val, base, zero) : zero; +} + +typedef QVarLengthArray<char, 64> Buffer; +static bool checkedToAscii(Buffer &buffer, const QChar *begin, const QChar *end) +{ + const ushort *const ubegin = reinterpret_cast<const ushort *>(begin); + const ushort *const uend = reinterpret_cast<const ushort *>(end); + const ushort *src = ubegin; + + buffer.resize(uend - ubegin + 1); + char *dst = buffer.data(); + + while (src != uend) { + if (*src >= 0x7f) + return false; + *dst++ = *src++; + } + *dst = '\0'; + return true; +} + +bool parseIp4(IPv4Address &address, const QChar *begin, const QChar *end) +{ + Q_ASSERT(begin != end); + Buffer buffer; + if (!checkedToAscii(buffer, begin, end)) + return false; + + int dotCount = 0; + address = 0; + const char *ptr = buffer.data(); + while (dotCount < 4) { + const char *endptr; + bool ok; + quint64 ll = qstrtoull(ptr, &endptr, 0, &ok); + quint32 x = ll; + if (!ok || endptr == ptr || ll != x) + return false; + + if (*endptr == '.' || dotCount == 3) { + if (x & ~0xff) + return false; + address <<= 8; + } else if (dotCount == 2) { + if (x & ~0xffff) + return false; + address <<= 16; + } else if (dotCount == 1) { + if (x & ~0xffffff) + return false; + address <<= 24; + } + address |= x; + + if (dotCount == 3 && *endptr != '\0') + return false; + else if (dotCount == 3 || *endptr == '\0') + return true; + ++dotCount; + ptr = endptr + 1; + } + return false; +} + +void toString(QString &appendTo, IPv4Address address) +{ + // reconstructing is easy + // use the fast operator% that pre-calculates the size + appendTo += number(address >> 24) + % QLatin1Char('.') + % number(address >> 16) + % QLatin1Char('.') + % number(address >> 8) + % QLatin1Char('.') + % number(address); +} + +} +QT_END_NAMESPACE |