src/network/access/qnetworkcookie.cpp
changeset 0 1918ee327afb
child 3 41300fa6a67c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/network/access/qnetworkcookie.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,1039 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtNetwork module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qnetworkcookie.h"
+#include "qnetworkcookie_p.h"
+
+#include "qnetworkrequest.h"
+#include "qnetworkreply.h"
+#include "QtCore/qbytearray.h"
+#include "QtCore/qdebug.h"
+#include "QtCore/qlist.h"
+#include "QtCore/qlocale.h"
+#include "QtCore/qstring.h"
+#include "QtCore/qstringlist.h"
+#include "QtCore/qurl.h"
+#include "private/qobject_p.h"
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QNetworkCookie
+    \since 4.4
+    \brief The QNetworkCookie class holds one network cookie.
+
+    Cookies are small bits of information that stateless protocols
+    like HTTP use to maintain some persistent information across
+    requests.
+
+    A cookie is set by a remote server when it replies to a request
+    and it expects the same cookie to be sent back when further
+    requests are sent.
+
+    QNetworkCookie holds one such cookie as received from the
+    network. A cookie has a name and a value, but those are opaque to
+    the application (that is, the information stored in them has no
+    meaning to the application). A cookie has an associated path name
+    and domain, which indicate when the cookie should be sent again to
+    the server.
+
+    A cookie can also have an expiration date, indicating its
+    validity. If the expiration date is not present, the cookie is
+    considered a "session cookie" and should be discarded when the
+    application exits (or when its concept of session is over).
+
+    QNetworkCookie provides a way of parsing a cookie from the HTTP
+    header format using the QNetworkCookie::parseCookies()
+    function. However, when received in a QNetworkReply, the cookie is
+    already parsed.
+
+    This class implements cookies as described by the
+    \l{Netscape Cookie Specification}{initial cookie specification by
+    Netscape}, which is somewhat similar to the \l{RFC 2109} specification,
+    plus the \l{Mitigating Cross-site Scripting With HTTP-only Cookies}
+    {"HttpOnly" extension}. The more recent \l{RFC 2965} specification
+    (which uses the Set-Cookie2 header) is not supported.
+
+    \sa QNetworkCookieJar, QNetworkRequest, QNetworkReply
+*/
+
+/*!
+    Create a new QNetworkCookie object, initializing the cookie name
+    to \a name and its value to \a value.
+
+    A cookie is only valid if it has a name. However, the value is
+    opaque to the application and being empty may have significance to
+    the remote server.
+*/
+QNetworkCookie::QNetworkCookie(const QByteArray &name, const QByteArray &value)
+    : d(new QNetworkCookiePrivate)
+{
+    qRegisterMetaType<QNetworkCookie>();
+    qRegisterMetaType<QList<QNetworkCookie> >();
+
+    d->name = name;
+    d->value = value;
+}
+
+/*!
+    Creates a new QNetworkCookie object by copying the contents of \a
+    other.
+*/
+QNetworkCookie::QNetworkCookie(const QNetworkCookie &other)
+    : d(other.d)
+{
+}
+
+/*!
+    Destroys this QNetworkCookie object.
+*/
+QNetworkCookie::~QNetworkCookie()
+{
+    // QSharedDataPointer auto deletes
+    d = 0;
+}
+
+/*!
+    Copies the contents of the QNetworkCookie object \a other to this
+    object.
+*/
+QNetworkCookie &QNetworkCookie::operator=(const QNetworkCookie &other)
+{
+    d = other.d;
+    return *this;
+}
+
+/*!
+    \fn bool QNetworkCookie::operator!=(const QNetworkCookie &other) const
+
+    Returns true if this cookie is not equal to \a other.
+
+    \sa operator==()
+*/
+
+/*!
+    Returns true if this cookie is equal to \a other. This function
+    only returns true if all fields of the cookie are the same.
+
+    However, in some contexts, two cookies of the same name could be
+    considered equal.
+
+    \sa operator!=()
+*/
+bool QNetworkCookie::operator==(const QNetworkCookie &other) const
+{
+    if (d == other.d)
+        return true;
+    return d->name == other.d->name &&
+        d->value == other.d->value &&
+        d->expirationDate.toUTC() == other.d->expirationDate.toUTC() &&
+        d->domain == other.d->domain &&
+        d->path == other.d->path &&
+        d->secure == other.d->secure &&
+        d->comment == other.d->comment;
+}
+
+/*!
+    Returns true if the "secure" option was specified in the cookie
+    string, false otherwise.
+
+    Secure cookies may contain private information and should not be
+    resent over unencrypted connections.
+
+    \sa setSecure()
+*/
+bool QNetworkCookie::isSecure() const
+{
+    return d->secure;
+}
+
+/*!
+    Sets the secure flag of this cookie to \a enable.
+
+    Secure cookies may contain private information and should not be
+    resent over unencrypted connections.
+
+    \sa isSecure()
+*/
+void QNetworkCookie::setSecure(bool enable)
+{
+    d->secure = enable;
+}
+
+/*!
+    \since 4.5
+
+    Returns true if the "HttpOnly" flag is enabled for this cookie.
+
+    A cookie that is "HttpOnly" is only set and retrieved by the
+    network requests and replies; i.e., the HTTP protocol. It is not
+    accessible from scripts running on browsers.
+
+    \sa isSecure()
+*/
+bool QNetworkCookie::isHttpOnly() const
+{
+    return d->httpOnly;
+}
+
+/*!
+    \since 4.5
+
+    Sets this cookie's "HttpOnly" flag to \a enable.
+*/
+void QNetworkCookie::setHttpOnly(bool enable)
+{
+    d->httpOnly = enable;
+}
+
+/*!
+    Returns true if this cookie is a session cookie. A session cookie
+    is a cookie which has no expiration date, which means it should be
+    discarded when the application's concept of session is over
+    (usually, when the application exits).
+
+    \sa expirationDate(), setExpirationDate()
+*/
+bool QNetworkCookie::isSessionCookie() const
+{
+    return !d->expirationDate.isValid();
+}
+
+/*!
+    Returns the expiration date for this cookie. If this cookie is a
+    session cookie, the QDateTime returned will not be valid. If the
+    date is in the past, this cookie has already expired and should
+    not be sent again back to a remote server.
+
+    The expiration date corresponds to the parameters of the "expires"
+    entry in the cookie string.
+
+    \sa isSessionCookie(), setExpirationDate()
+*/
+QDateTime QNetworkCookie::expirationDate() const
+{
+    return d->expirationDate;
+}
+
+/*!
+    Sets the expiration date of this cookie to \a date. Setting an
+    invalid expiration date to this cookie will mean it's a session
+    cookie.
+
+    \sa isSessionCookie(), expirationDate()
+*/
+void QNetworkCookie::setExpirationDate(const QDateTime &date)
+{
+    d->expirationDate = date;
+}
+
+/*!
+    Returns the domain this cookie is associated with. This
+    corresponds to the "domain" field of the cookie string.
+
+    Note that the domain here may start with a dot, which is not a
+    valid hostname. However, it means this cookie matches all
+    hostnames ending with that domain name.
+
+    \sa setDomain()
+*/
+QString QNetworkCookie::domain() const
+{
+    return d->domain;
+}
+
+/*!
+    Sets the domain associated with this cookie to be \a domain.
+
+    \sa domain()
+*/
+void QNetworkCookie::setDomain(const QString &domain)
+{
+    d->domain = domain;
+}
+
+/*!
+    Returns the path associated with this cookie. This corresponds to
+    the "path" field of the cookie string.
+
+    \sa setPath()
+*/
+QString QNetworkCookie::path() const
+{
+    return d->path;
+}
+
+/*!
+    Sets the path associated with this cookie to be \a path.
+
+    \sa path()
+*/
+void QNetworkCookie::setPath(const QString &path)
+{
+    d->path = path;
+}
+
+/*!
+    Returns the name of this cookie. The only mandatory field of a
+    cookie is its name, without which it is not considered valid.
+
+    \sa setName(), value()
+*/
+QByteArray QNetworkCookie::name() const
+{
+    return d->name;
+}
+
+/*!
+    Sets the name of this cookie to be \a cookieName. Note that
+    setting a cookie name to an empty QByteArray will make this cookie
+    invalid.
+
+    \sa name(), value()
+*/
+void QNetworkCookie::setName(const QByteArray &cookieName)
+{
+    d->name = cookieName;
+}
+
+/*!
+    Returns this cookies value, as specified in the cookie
+    string. Note that a cookie is still valid if its value is empty.
+
+    Cookie name-value pairs are considered opaque to the application:
+    that is, their values don't mean anything.
+
+    \sa setValue(), name()
+*/
+QByteArray QNetworkCookie::value() const
+{
+    return d->value;
+}
+
+/*!
+    Sets the value of this cookie to be \a value.
+
+    \sa value(), name()
+*/
+void QNetworkCookie::setValue(const QByteArray &value)
+{
+    d->value = value;
+}
+
+// ### move this to qnetworkcookie_p.h and share with qnetworkaccesshttpbackend
+static QPair<QByteArray, QByteArray> nextField(const QByteArray &text, int &position)
+{
+    // format is one of:
+    //    (1)  token
+    //    (2)  token = token
+    //    (3)  token = quoted-string
+    int i;
+    const int length = text.length();
+    position = nextNonWhitespace(text, position);
+
+    // parse the first part, before the equal sign
+    for (i = position; i < length; ++i) {
+        register char c = text.at(i);
+        if (c == ';' || c == ',' || c == '=')
+            break;
+    }
+
+    QByteArray first = text.mid(position, i - position).trimmed();
+    position = i;
+
+    if (first.isEmpty())
+        return qMakePair(QByteArray(), QByteArray());
+    if (i == length || text.at(i) != '=')
+        // no equal sign, we found format (1)
+        return qMakePair(first, QByteArray());
+
+    QByteArray second;
+    second.reserve(32);         // arbitrary but works for most cases
+
+    i = nextNonWhitespace(text, position + 1);
+    if (i < length && text.at(i) == '"') {
+        // a quote, we found format (3), where:
+        // quoted-string  = ( <"> *(qdtext | quoted-pair ) <"> )
+        // qdtext         = <any TEXT except <">>
+        // quoted-pair    = "\" CHAR
+        ++i;
+        while (i < length) {
+            register char c = text.at(i);
+            if (c == '"') {
+                // end of quoted text
+                break;
+            } else if (c == '\\') {
+                ++i;
+                if (i >= length)
+                    // broken line
+                    return qMakePair(QByteArray(), QByteArray());
+                c = text.at(i);
+            }
+
+            second += c;
+            ++i;
+        }
+
+        for ( ; i < length; ++i) {
+            register char c = text.at(i);
+            if (c == ',' || c == ';')
+                break;
+        }
+        position = i;
+    } else {
+        // no quote, we found format (2)
+        position = i;
+        for ( ; i < length; ++i) {
+            register char c = text.at(i);
+            if (c == ',' || c == ';' || isLWS(c))
+                break;
+        }
+
+        second = text.mid(position, i - position).trimmed();
+        position = i;
+    }
+
+    if (second.isNull())
+        second.resize(0); // turns into empty-but-not-null
+    return qMakePair(first, second);
+}
+
+/*!
+    \enum QNetworkCookie::RawForm
+
+    This enum is used with the toRawForm() function to declare which
+    form of a cookie shall be returned.
+
+    \value NameAndValueOnly     makes toRawForm() return only the
+        "NAME=VALUE" part of the cookie, as suitable for sending back
+        to a server in a client request's "Cookie:" header. Multiple
+        cookies are separated by a semi-colon in the "Cookie:" header
+        field.
+
+    \value Full                 makes toRawForm() return the full
+        cookie contents, as suitable for sending to a client in a
+        server's "Set-Cookie:" header. Multiple cookies are separated
+        by commas in a "Set-Cookie:" header.
+
+    Note that only the Full form of the cookie can be parsed back into
+    its original contents.
+
+    \sa toRawForm(), parseCookies()
+*/
+
+/*!
+    Returns the raw form of this QNetworkCookie. The QByteArray
+    returned by this function is suitable for an HTTP header, either
+    in a server response (the Set-Cookie header) or the client request
+    (the Cookie header). You can choose from one of two formats, using
+    \a form.
+
+    \sa parseCookies()
+*/
+QByteArray QNetworkCookie::toRawForm(RawForm form) const
+{
+    QByteArray result;
+    if (d->name.isEmpty())
+        return result;          // not a valid cookie
+
+    result = d->name;
+    result += '=';
+    if (d->value.contains(';') ||
+        d->value.contains(',') ||
+        d->value.contains(' ') ||
+        d->value.contains('"')) {
+        result += '"';
+
+        QByteArray value = d->value;
+        value.replace('"', "\\\"");
+        result += value;
+
+        result += '"';
+    } else {
+        result += d->value;
+    }
+
+    if (form == Full) {
+        // same as above, but encoding everything back
+        if (isSecure())
+            result += "; secure";
+        if (isHttpOnly())
+            result += "; HttpOnly";
+        if (!isSessionCookie()) {
+            result += "; expires=";
+            result += QLocale::c().toString(d->expirationDate.toUTC(),
+                                            QLatin1String("ddd, dd-MMM-yyyy hh:mm:ss 'GMT")).toLatin1();
+        }
+        if (!d->domain.isEmpty()) {
+            result += "; domain=";
+            QString domainNoDot = d->domain;
+            if (domainNoDot.startsWith(QLatin1Char('.'))) {
+                result += '.';
+                domainNoDot = domainNoDot.mid(1);
+            }
+            result += QUrl::toAce(domainNoDot);
+        }
+        if (!d->path.isEmpty()) {
+            result += "; path=";
+            result += QUrl::toPercentEncoding(d->path, "/");
+        }
+    }
+    return result;
+}
+
+static const char zones[] =
+    "pst\0" // -8
+    "pdt\0"
+    "mst\0" // -7
+    "mdt\0"
+    "cst\0" // -6
+    "cdt\0"
+    "est\0" // -5
+    "edt\0"
+    "ast\0" // -4
+    "nst\0" // -3
+    "gmt\0" // 0
+    "utc\0"
+    "bst\0"
+    "met\0" // 1
+    "eet\0" // 2
+    "jst\0" // 9
+    "\0";
+static int zoneOffsets[] = {-8, -8, -7, -7, -6, -6, -5, -5, -4, -3, 0, 0, 0, 1, 2, 9 };
+
+static const char months[] =
+    "jan\0"
+    "feb\0"
+    "mar\0"
+    "apr\0"
+    "may\0"
+    "jun\0"
+    "jul\0"
+    "aug\0"
+    "sep\0"
+    "oct\0"
+    "nov\0"
+    "dec\0"
+    "\0";
+
+static inline bool isNumber(char s)
+{ return s >= '0' && s <= '9'; }
+
+static inline bool isTerminator(char c)
+{ return c == '\n' || c == '\r'; }
+
+static inline bool isValueSeparator(char c)
+{ return isTerminator(c) || c == ';'; }
+
+static inline bool isWhitespace(char c)
+{ return c == ' '  || c == '\t'; }
+
+static bool checkStaticArray(int &val, const QByteArray &dateString, int at, const char *array, int size)
+{
+    if (dateString[at] < 'a' || dateString[at] > 'z')
+        return false;
+    if (val == -1 && dateString.length() >= at + 3) {
+        int j = 0;
+        int i = 0;
+        while (i <= size) {
+            const char *str = array + i;
+            if (str[0] == dateString[at]
+                && str[1] == dateString[at + 1]
+                && str[2] == dateString[at + 2]) {
+                val = j;
+                return true;
+            }
+            i += strlen(str) + 1;
+            ++j;
+        }
+    }
+    return false;
+}
+
+//#define PARSEDATESTRINGDEBUG
+
+#define ADAY   1
+#define AMONTH 2
+#define AYEAR  4
+
+/*
+    Parse all the date formats that Firefox can.
+
+    The official format is:
+    expires=ddd(d)?, dd-MMM-yyyy hh:mm:ss GMT
+
+    But browsers have been supporting a very wide range of date
+    strings. To work on many sites we need to support more then
+    just the official date format.
+
+    For reference see Firefox's PR_ParseTimeStringToExplodedTime in
+    prtime.c. The Firefox date parser is coded in a very complex way
+    and is slightly over ~700 lines long.  While this implementation
+    will be slightly slower for the non standard dates it is smaller,
+    more readable, and maintainable.
+
+    Or in their own words:
+        "} // else what the hell is this."
+*/
+static QDateTime parseDateString(const QByteArray &dateString)
+{
+    QTime time;
+    // placeholders for values when we are not sure it is a year, month or day
+    int unknown[3] = {-1, -1, -1};
+    int month = -1;
+    int day = -1;
+    int year = -1;
+    int zoneOffset = -1;
+
+    // hour:minute:second.ms pm
+    QRegExp timeRx(QLatin1String("(\\d{1,2}):(\\d{1,2})(:(\\d{1,2})|)(\\.(\\d{1,3})|)((\\s{0,}(am|pm))|)"));
+
+    int at = 0;
+    while (at < dateString.length()) {
+#ifdef PARSEDATESTRINGDEBUG
+        qDebug() << dateString.mid(at);
+#endif
+        bool isNum = isNumber(dateString[at]);
+
+        // Month
+        if (!isNum
+            && checkStaticArray(month, dateString, at, months, sizeof(months)- 1)) {
+            ++month;
+#ifdef PARSEDATESTRINGDEBUG
+            qDebug() << "Month:" << month;
+#endif
+            at += 3;
+            continue;
+        }
+        // Zone
+        if (!isNum
+            && zoneOffset == -1
+            && checkStaticArray(zoneOffset, dateString, at, zones, sizeof(zones)- 1)) {
+            int sign = (at >= 0 && dateString[at - 1] == '-') ? -1 : 1;
+            zoneOffset = sign * zoneOffsets[zoneOffset] * 60 * 60;
+#ifdef PARSEDATESTRINGDEBUG
+            qDebug() << "Zone:" << month;
+#endif
+            at += 3;
+            continue;
+        }
+        // Zone offset
+        if (!isNum
+            && (zoneOffset == -1 || zoneOffset == 0) // Can only go after gmt
+            && (dateString[at] == '+' || dateString[at] == '-')
+            && (at == 0
+                || isWhitespace(dateString[at - 1])
+                || dateString[at - 1] == ','
+                || (at >= 3
+                    && (dateString[at - 3] == 'g')
+                    && (dateString[at - 2] == 'm')
+                    && (dateString[at - 1] == 't')))) {
+
+            int end = 1;
+            while (end < 5 && dateString.length() > at+end
+                   && dateString[at + end] >= '0' && dateString[at + end] <= '9')
+                ++end;
+            int minutes = 0;
+            int hours = 0;
+            switch (end - 1) {
+            case 4:
+                minutes = atoi(dateString.mid(at + 3, 2).constData());
+                // fall through
+            case 2:
+                hours = atoi(dateString.mid(at + 1, 2).constData());
+                break;
+            case 1:
+                hours = atoi(dateString.mid(at + 1, 1).constData());
+                break;
+            default:
+                at += end;
+                continue;
+            }
+            if (end != 1) {
+                int sign = dateString[at] == '-' ? -1 : 1;
+                zoneOffset = sign * ((minutes * 60) + (hours * 60 * 60));
+#ifdef PARSEDATESTRINGDEBUG
+                qDebug() << "Zone offset:" << zoneOffset << hours << minutes;
+#endif
+                at += end;
+                continue;
+            }
+        }
+
+        // Time
+        if (isNum && time.isNull()
+            && dateString.length() >= at + 3
+            && (dateString[at + 2] == ':' || dateString[at + 1] == ':')) {
+            // While the date can be found all over the string the format
+            // for the time is set and a nice regexp can be used.
+            int pos = timeRx.indexIn(QLatin1String(dateString), at);
+            if (pos != -1) {
+                QStringList list = timeRx.capturedTexts();
+                int h = atoi(list.at(1).toLatin1().constData());
+                int m = atoi(list.at(2).toLatin1().constData());
+                int s = atoi(list.at(4).toLatin1().constData());
+                int ms = atoi(list.at(6).toLatin1().constData());
+                if (h < 12 && !list.at(9).isEmpty())
+                    if (list.at(9) == QLatin1String("pm"))
+                        h += 12;
+                time = QTime(h, m, s, ms);
+#ifdef PARSEDATESTRINGDEBUG
+                qDebug() << "Time:" << list << timeRx.matchedLength();
+#endif
+                at += timeRx.matchedLength();
+                continue;
+            }
+        }
+
+        // 4 digit Year
+        if (isNum
+            && year == -1
+            && dateString.length() >= at + 3) {
+            if (isNumber(dateString[at + 1])
+                && isNumber(dateString[at + 2])
+                && isNumber(dateString[at + 3])) {
+                year = atoi(dateString.mid(at, 4).constData());
+                at += 4;
+#ifdef PARSEDATESTRINGDEBUG
+                qDebug() << "Year:" << year;
+#endif
+                continue;
+            }
+        }
+
+        // a one or two digit number
+        // Could be month, day or year
+        if (isNum) {
+            int length = 1;
+            if (dateString.length() > at + 1
+                && isNumber(dateString[at + 1]))
+                ++length;
+            int x = atoi(dateString.mid(at, length).constData());
+            if (year == -1 && (x > 31 || x == 0)) {
+                year = x;
+            } else {
+                if (unknown[0] == -1) unknown[0] = x;
+                else if (unknown[1] == -1) unknown[1] = x;
+                else if (unknown[2] == -1) unknown[2] = x;
+            }
+            at += length;
+#ifdef PARSEDATESTRINGDEBUG
+            qDebug() << "Saving" << x;
+#endif
+            continue;
+        }
+
+        // Unknown character, typically a weekday such as 'Mon'
+        ++at;
+    }
+
+    // Once we are done parsing the string take the digits in unknown
+    // and determine which is the unknown year/month/day
+
+    int couldBe[3] = { 0, 0, 0 };
+    int unknownCount = 3;
+    for (int i = 0; i < unknownCount; ++i) {
+        if (unknown[i] == -1) {
+            couldBe[i] = ADAY | AYEAR | AMONTH;
+            unknownCount = i;
+            continue;
+        }
+
+        if (unknown[i] >= 1)
+            couldBe[i] = ADAY;
+
+        if (month == -1 && unknown[i] >= 1 && unknown[i] <= 12)
+            couldBe[i] |= AMONTH;
+
+        if (year == -1)
+            couldBe[i] |= AYEAR;
+    }
+
+    // For any possible day make sure one of the values that could be a month
+    // can contain that day.
+    // For any possible month make sure one of the values that can be a
+    // day that month can have.
+    // Example: 31 11 06
+    // 31 can't be a day because 11 and 6 don't have 31 days
+    for (int i = 0; i < unknownCount; ++i) {
+        int currentValue = unknown[i];
+        bool findMatchingMonth = couldBe[i] & ADAY && currentValue >= 29;
+        bool findMatchingDay = couldBe[i] & AMONTH;
+        if (!findMatchingMonth || !findMatchingDay)
+            continue;
+        for (int j = 0; j < 3; ++j) {
+            if (j == i)
+                continue;
+            for (int k = 0; k < 2; ++k) {
+                if (k == 0 && !(findMatchingMonth && (couldBe[j] & AMONTH)))
+                    continue;
+                else if (k == 1 && !(findMatchingDay && (couldBe[j] & ADAY)))
+                    continue;
+                int m = currentValue;
+                int d = unknown[j];
+                if (k == 0)
+                    qSwap(m, d);
+                if (m == -1) m = month;
+                bool found = true;
+                switch(m) {
+                    case 2:
+                        // When we get 29 and the year ends up having only 28
+                        // See date.isValid below
+                        // Example: 29 23 Feb
+                        if (d <= 29)
+                            found = false;
+                        break;
+                    case 4: case 6: case 9: case 11:
+                        if (d <= 30)
+                            found = false;
+                        break;
+                    default:
+                        if (d > 0 && d <= 31)
+                            found = false;
+                }
+                if (k == 0) findMatchingMonth = found;
+                else if (k == 1) findMatchingDay = found;
+            }
+        }
+        if (findMatchingMonth)
+            couldBe[i] &= ~ADAY;
+        if (findMatchingDay)
+            couldBe[i] &= ~AMONTH;
+    }
+
+    // First set the year/month/day that have been deduced
+    // and reduce the set as we go along to deduce more
+    for (int i = 0; i < unknownCount; ++i) {
+        int unset = 0;
+        for (int j = 0; j < 3; ++j) {
+            if (couldBe[j] == ADAY && day == -1) {
+                day = unknown[j];
+                unset |= ADAY;
+            } else if (couldBe[j] == AMONTH && month == -1) {
+                month = unknown[j];
+                unset |= AMONTH;
+            } else if (couldBe[j] == AYEAR && year == -1) {
+                year = unknown[j];
+                unset |= AYEAR;
+            } else {
+                // common case
+                break;
+            }
+            couldBe[j] &= ~unset;
+        }
+    }
+
+    // Now fallback to a standardized order to fill in the rest with
+    for (int i = 0; i < unknownCount; ++i) {
+        if (couldBe[i] & AMONTH && month == -1) month = unknown[i];
+        else if (couldBe[i] & ADAY && day == -1) day = unknown[i];
+        else if (couldBe[i] & AYEAR && year == -1) year = unknown[i];
+    }
+#ifdef PARSEDATESTRINGDEBUG
+        qDebug() << "Final set" << year << month << day;
+#endif
+
+    if (year == -1 || month == -1 || day == -1) {
+#ifdef PARSEDATESTRINGDEBUG
+        qDebug() << "Parser failure" << year << month << day;
+#endif
+        return QDateTime();
+    }
+
+    // Y2k behavior
+    int y2k = 0;
+    if (year < 70)
+        y2k = 2000;
+    else if (year < 100)
+        y2k = 1900;
+
+    QDate date(year + y2k, month, day);
+
+    // When we were given a bad cookie that when parsed
+    // set the day to 29 and the year to one that doesn't
+    // have the 29th of Feb rather then adding the extra
+    // complicated checking earlier just swap here.
+    // Example: 29 23 Feb
+    if (!date.isValid())
+        date = QDate(day + y2k, month, year);
+
+    QDateTime dateTime(date, time, Qt::UTC);
+
+    if (zoneOffset != -1) {
+        dateTime = dateTime.addSecs(zoneOffset);
+    }
+    if (!dateTime.isValid())
+        return QDateTime();
+    return dateTime;
+}
+
+/*!
+    Parses the cookie string \a cookieString as received from a server
+    response in the "Set-Cookie:" header. If there's a parsing error,
+    this function returns an empty list.
+
+    Since the HTTP header can set more than one cookie at the same
+    time, this function returns a QList<QNetworkCookie>, one for each
+    cookie that is parsed.
+
+    \sa toRawForm()
+*/
+QList<QNetworkCookie> QNetworkCookie::parseCookies(const QByteArray &cookieString)
+{
+    // cookieString can be a number of set-cookie header strings joined together
+    // by \n, parse each line separately.
+    QList<QNetworkCookie> cookies;
+    QList<QByteArray> list = cookieString.split('\n');
+    for (int a = 0; a < list.size(); a++)
+        cookies += QNetworkCookiePrivate::parseSetCookieHeaderLine(list.at(a));
+    return cookies;
+}
+
+QList<QNetworkCookie> QNetworkCookiePrivate::parseSetCookieHeaderLine(const QByteArray &cookieString)
+{
+    // According to http://wp.netscape.com/newsref/std/cookie_spec.html,<
+    // the Set-Cookie response header is of the format:
+    //
+    //   Set-Cookie: NAME=VALUE; expires=DATE; path=PATH; domain=DOMAIN_NAME; secure
+    //
+    // where only the NAME=VALUE part is mandatory
+    //
+    // We do not support RFC 2965 Set-Cookie2-style cookies
+
+    QList<QNetworkCookie> result;
+    QDateTime now = QDateTime::currentDateTime().toUTC();
+
+    int position = 0;
+    const int length = cookieString.length();
+    while (position < length) {
+        QNetworkCookie cookie;
+
+        // The first part is always the "NAME=VALUE" part
+        QPair<QByteArray,QByteArray> field = nextField(cookieString, position);
+        if (field.first.isEmpty() || field.second.isNull())
+            // parsing error
+            break;
+        cookie.setName(field.first);
+        cookie.setValue(field.second);
+
+        position = nextNonWhitespace(cookieString, position);
+        bool endOfCookie = false;
+        while (!endOfCookie && position < length) {
+            switch (cookieString.at(position++)) {
+            case ',':
+                // end of the cookie
+                endOfCookie = true;
+                break;
+
+            case ';':
+                // new field in the cookie
+                field = nextField(cookieString, position);
+                field.first = field.first.toLower(); // everything but the NAME=VALUE is case-insensitive
+
+                if (field.first == "expires") {
+                    position -= field.second.length();
+                    int end;
+                    for (end = position; end < length; ++end)
+                        if (isValueSeparator(cookieString.at(end)))
+                            break;
+
+                    QByteArray dateString = cookieString.mid(position, end - position).trimmed();
+                    position = end;
+                    QDateTime dt = parseDateString(dateString.toLower());
+                    if (!dt.isValid()) {
+                        return result;
+                    }
+                    cookie.setExpirationDate(dt);
+                } else if (field.first == "domain") {
+                    QByteArray rawDomain = field.second;
+                    if (rawDomain.startsWith('.')) {
+                        rawDomain = rawDomain.mid(1);
+                    }
+                    QString normalizedDomain = QUrl::fromAce(QUrl::toAce(QString::fromUtf8(rawDomain)));
+                    // always add the dot, there are some servers that forget the
+                    // leading dot. This is actually forbidden according to RFC 2109,
+                    // but all browsers accept it anyway so we do that as well
+                    cookie.setDomain(QLatin1Char('.') + normalizedDomain);
+                } else if (field.first == "max-age") {
+                    bool ok = false;
+                    int secs = field.second.toInt(&ok);
+                    if (!ok)
+                        return result;
+                    cookie.setExpirationDate(now.addSecs(secs));
+                } else if (field.first == "path") {
+                    QString path = QUrl::fromPercentEncoding(field.second);
+                    cookie.setPath(path);
+                } else if (field.first == "secure") {
+                    cookie.setSecure(true);
+                } else if (field.first == "httponly") {
+                    cookie.setHttpOnly(true);
+                } else if (field.first == "comment") {
+                    //cookie.setComment(QString::fromUtf8(field.second));
+                } else if (field.first == "version") {
+                    if (field.second != "1") {
+                        // oops, we don't know how to handle this cookie
+                        return result;
+                    }
+                } else {
+                    // got an unknown field in the cookie
+                    // what do we do?
+                }
+
+                position = nextNonWhitespace(cookieString, position);
+            }
+        }
+
+        if (!cookie.name().isEmpty())
+            result += cookie;
+    }
+
+    return result;
+}
+
+#ifndef QT_NO_DEBUG_STREAM
+QDebug operator<<(QDebug s, const QNetworkCookie &cookie)
+{
+    s.nospace() << "QNetworkCookie(" << cookie.toRawForm(QNetworkCookie::Full) << ')';
+    return s.space();
+}
+#endif
+
+QT_END_NAMESPACE