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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtNetwork module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** 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-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qhttpheaderparser_p.h"
QT_BEGIN_NAMESPACE
QHttpHeaderParser::QHttpHeaderParser()
: statusCode(100) // Required by tst_QHttpNetworkConnection::ignoresslerror(failure)
, majorVersion(0)
, minorVersion(0)
{
}
void QHttpHeaderParser::clear()
{
statusCode = 100;
majorVersion = 0;
minorVersion = 0;
reasonPhrase.clear();
fields.clear();
}
bool QHttpHeaderParser::parseHeaders(QByteArrayView header)
{
// see rfc2616, sec 4 for information about HTTP/1.1 headers.
// allows relaxed parsing here, accepts both CRLF & LF line endings
int i = 0;
while (i < header.size()) {
int j = header.indexOf(':', i); // field-name
if (j == -1)
break;
QByteArrayView field = header.sliced(i, j - i).trimmed();
j++;
// any number of LWS is allowed before and after the value
QByteArray value;
do {
i = header.indexOf('\n', j);
if (i == -1)
break;
if (!value.isEmpty())
value += ' ';
// check if we have CRLF or only LF
bool hasCR = i && header[i - 1] == '\r';
int length = i - (hasCR ? 1: 0) - j;
value += header.sliced(j, length).trimmed();
j = ++i;
} while (i < header.size() && (header.at(i) == ' ' || header.at(i) == '\t'));
if (i == -1)
return false; // something is wrong
fields.append(qMakePair(field.toByteArray(), value));
}
return true;
}
bool QHttpHeaderParser::parseStatus(QByteArrayView status)
{
// from RFC 2616:
// Status-Line = HTTP-Version SP Status-Code SP Reason-Phrase CRLF
// HTTP-Version = "HTTP" "/" 1*DIGIT "." 1*DIGIT
// that makes: 'HTTP/n.n xxx Message'
// byte count: 0123456789012
static const int minLength = 11;
static const int dotPos = 6;
static const int spacePos = 8;
static const char httpMagic[] = "HTTP/";
if (status.length() < minLength
|| !status.startsWith(httpMagic)
|| status.at(dotPos) != '.'
|| status.at(spacePos) != ' ') {
// I don't know how to parse this status line
return false;
}
// optimize for the valid case: defer checking until the end
majorVersion = status.at(dotPos - 1) - '0';
minorVersion = status.at(dotPos + 1) - '0';
int i = spacePos;
int j = status.indexOf(' ', i + 1);
const QByteArrayView code = j > i ? status.sliced(i + 1, j - i - 1)
: status.sliced(i + 1);
bool ok;
statusCode = code.toInt(&ok);
reasonPhrase = j > i ? QString::fromLatin1(status.sliced(j + 1))
: QString();
return ok && uint(majorVersion) <= 9 && uint(minorVersion) <= 9;
}
const QList<QPair<QByteArray, QByteArray> >& QHttpHeaderParser::headers() const
{
return fields;
}
QByteArray QHttpHeaderParser::firstHeaderField(const QByteArray &name,
const QByteArray &defaultValue) const
{
for (auto it = fields.constBegin(); it != fields.constEnd(); ++it) {
if (name.compare(it->first, Qt::CaseInsensitive) == 0)
return it->second;
}
return defaultValue;
}
QByteArray QHttpHeaderParser::combinedHeaderValue(const QByteArray &name, const QByteArray &defaultValue) const
{
const QList<QByteArray> allValues = headerFieldValues(name);
if (allValues.isEmpty())
return defaultValue;
else
return allValues.join(", ");
}
QList<QByteArray> QHttpHeaderParser::headerFieldValues(const QByteArray &name) const
{
QList<QByteArray> result;
for (auto it = fields.constBegin(); it != fields.constEnd(); ++it)
if (name.compare(it->first, Qt::CaseInsensitive) == 0)
result += it->second;
return result;
}
void QHttpHeaderParser::removeHeaderField(const QByteArray &name)
{
auto firstEqualsName = [&name](const QPair<QByteArray, QByteArray> &header) {
return name.compare(header.first, Qt::CaseInsensitive) == 0;
};
fields.removeIf(firstEqualsName);
}
void QHttpHeaderParser::setHeaderField(const QByteArray &name, const QByteArray &data)
{
removeHeaderField(name);
fields.append(qMakePair(name, data));
}
void QHttpHeaderParser::prependHeaderField(const QByteArray &name, const QByteArray &data)
{
fields.prepend(qMakePair(name, data));
}
void QHttpHeaderParser::appendHeaderField(const QByteArray &name, const QByteArray &data)
{
fields.append(qMakePair(name, data));
}
void QHttpHeaderParser::clearHeaders()
{
fields.clear();
}
int QHttpHeaderParser::getStatusCode() const
{
return statusCode;
}
void QHttpHeaderParser::setStatusCode(int code)
{
statusCode = code;
}
int QHttpHeaderParser::getMajorVersion() const
{
return majorVersion;
}
void QHttpHeaderParser::setMajorVersion(int version)
{
majorVersion = version;
}
int QHttpHeaderParser::getMinorVersion() const
{
return minorVersion;
}
void QHttpHeaderParser::setMinorVersion(int version)
{
minorVersion = version;
}
QString QHttpHeaderParser::getReasonPhrase() const
{
return reasonPhrase;
}
void QHttpHeaderParser::setReasonPhrase(const QString &reason)
{
reasonPhrase = reason;
}
QT_END_NAMESPACE
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