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#include "qplatformdefs.h"
#include "qnetworkrequest.h"
#include "qnetworkcookie.h"
#include "qnetworkrequest_p.h"
#include "qsslconfiguration.h"
#include "QtCore/qshareddata.h"
#include "QtCore/qlocale.h"
#include "QtCore/qdatetime.h"
#include <ctype.h>
#ifndef QT_NO_DATESTRING
# include <stdio.h>
#endif
QT_BEGIN_NAMESPACE
/*!
\class QNetworkRequest
\brief The QNetworkRequest class holds a request to be sent with QNetworkAccessManager.
\since 4.4
\ingroup network
\inmodule QtNetwork
QNetworkRequest is part of the Network Access API and is the class
holding the information necessary to send a request over the
network. It contains a URL and some ancillary information that can
be used to modify the request.
\sa QNetworkReply, QNetworkAccessManager
*/
/*!
\enum QNetworkRequest::KnownHeaders
List of known header types that QNetworkRequest parses. Each known
header is also represented in raw form with its full HTTP name.
\value ContentTypeHeader corresponds to the HTTP Content-Type
header and contains a string containing the media (MIME) type and
any auxiliary data (for instance, charset)
\value ContentLengthHeader corresponds to the HTTP Content-Length
header and contains the length in bytes of the data transmitted.
\value LocationHeader corresponds to the HTTP Location
header and contains a URL representing the actual location of the
data, including the destination URL in case of redirections.
\value LastModifiedHeader corresponds to the HTTP Last-Modified
header and contains a QDateTime representing the last modification
date of the contents
\value CookieHeader corresponds to the HTTP Cookie header
and contains a QList<QNetworkCookie> representing the cookies to
be sent back to the server
\value SetCookieHeader corresponds to the HTTP Set-Cookie
header and contains a QList<QNetworkCookie> representing the
cookies sent by the server to be stored locally
\sa header(), setHeader(), rawHeader(), setRawHeader()
*/
/*!
\enum QNetworkRequest::Attribute
Attribute codes for the QNetworkRequest and QNetworkReply.
Attributes are extra meta-data that are used to control the
behavior of the request and to pass further information from the
reply back to the application. Attributes are also extensible,
allowing custom implementations to pass custom values.
The following table explains what the default attribute codes are,
the QVariant types associated, the default value if said attribute
is missing and whether it's used in requests or replies.
\value HttpStatusCodeAttribute
Replies only, type: QVariant::Int (no default)
Indicates the HTTP status code received from the HTTP server
(like 200, 304, 404, 401, etc.). If the connection was not
HTTP-based, this attribute will not be present.
\value HttpReasonPhraseAttribute
Replies only, type: QVariant::ByteArray (no default)
Indicates the HTTP reason phrase as received from the HTTP
server (like "Ok", "Found", "Not Found", "Access Denied",
etc.) This is the human-readable representation of the status
code (see above). If the connection was not HTTP-based, this
attribute will not be present.
\value RedirectionTargetAttribute
Replies only, type: QVariant::Url (no default)
If present, it indicates that the server is redirecting the
request to a different URL. The Network Access API does not by
default follow redirections: it's up to the application to
determine if the requested redirection should be allowed,
according to its security policies.
\value ConnectionEncryptedAttribute
Replies only, type: QVariant::Bool (default: false)
Indicates whether the data was obtained through an encrypted
(secure) connection.
\value CacheLoadControlAttribute
Requests only, type: QVariant::Int (default: QNetworkRequest::PreferNetwork)
Controls how the cache should be accessed. The possible values
are those of QNetworkRequest::CacheLoadControl. Note that the
default QNetworkAccessManager implementation does not support
caching. However, this attribute may be used by certain
backends to modify their requests (for example, for caching proxies).
\value CacheSaveControlAttribute
Requests only, type: QVariant::Bool (default: true)
Controls if the data obtained should be saved to cache for
future uses. If the value is false, the data obtained will not
be automatically cached. If true, data may be cached, provided
it is cacheable (what is cacheable depends on the protocol
being used).
\value SourceIsFromCacheAttribute
Replies only, type: QVariant::Bool (default: false)
Indicates whether the data was obtained from cache
or not.
\value DoNotBufferUploadDataAttribute
Requests only, type: QVariant::Bool (default: false)
Indicates whether the QNetworkAccessManager code is
allowed to buffer the upload data, e.g. when doing a HTTP POST.
When using this flag with sequential upload data, the ContentLengthHeader
header must be set.
\value HttpPipeliningAllowedAttribute
Requests only, type: QVariant::Bool (default: false)
Indicates whether the QNetworkAccessManager code is
allowed to use HTTP pipelining with this request.
\value HttpPipeliningWasUsedAttribute
Replies only, type: QVariant::Bool
Indicates whether the HTTP pipelining was used for receiving
this reply.
\value User
Special type. Additional information can be passed in
QVariants with types ranging from User to UserMax. The default
implementation of Network Access will ignore any request
attributes in this range and it will not produce any
attributes in this range in replies. The range is reserved for
extensions of QNetworkAccessManager.
\value UserMax
Special type. See User.
*/
/*!
\enum QNetworkRequest::CacheLoadControl
Controls the caching mechanism of QNetworkAccessManager.
\value AlwaysNetwork always load from network and do not
check if the cache has a valid entry (similar to the
"Reload" feature in browsers)
\value PreferNetwork default value; load from the network
if the cached entry is older than the network entry
\value PreferCache load from cache if available,
otherwise load from network. Note that this can return possibly
stale (but not expired) items from cache.
\value AlwaysCache only load from cache, indicating error
if the item was not cached (i.e., off-line mode)
*/
class QNetworkRequestPrivate: public QSharedData, public QNetworkHeadersPrivate
{
public:
inline QNetworkRequestPrivate()
#ifndef QT_NO_OPENSSL
: sslConfiguration(0)
#endif
{ qRegisterMetaType<QNetworkRequest>(); }
~QNetworkRequestPrivate()
{
#ifndef QT_NO_OPENSSL
delete sslConfiguration;
#endif
}
QNetworkRequestPrivate(const QNetworkRequestPrivate &other)
: QSharedData(other), QNetworkHeadersPrivate(other)
{
url = other.url;
#ifndef QT_NO_OPENSSL
sslConfiguration = 0;
if (other.sslConfiguration)
sslConfiguration = new QSslConfiguration(*other.sslConfiguration);
#endif
}
inline bool operator==(const QNetworkRequestPrivate &other) const
{
return url == other.url &&
rawHeaders == other.rawHeaders &&
attributes == other.attributes;
// don't compare cookedHeaders
}
QUrl url;
#ifndef QT_NO_OPENSSL
mutable QSslConfiguration *sslConfiguration;
#endif
};
/*!
Constructs a QNetworkRequest object with \a url as the URL to be
requested.
\sa url(), setUrl()
*/
QNetworkRequest::QNetworkRequest(const QUrl &url)
: d(new QNetworkRequestPrivate)
{
d->url = url;
}
/*!
Creates a copy of \a other.
*/
QNetworkRequest::QNetworkRequest(const QNetworkRequest &other)
: d(other.d)
{
}
/*!
Disposes of the QNetworkRequest object.
*/
QNetworkRequest::~QNetworkRequest()
{
// QSharedDataPointer auto deletes
d = 0;
}
/*!
Returns true if this object is the same as \a other (i.e., if they
have the same URL, same headers and same meta-data settings).
\sa operator!=()
*/
bool QNetworkRequest::operator==(const QNetworkRequest &other) const
{
return d == other.d || *d == *other.d;
}
/*!
\fn bool QNetworkRequest::operator!=(const QNetworkRequest &other) const
Returns false if this object is not the same as \a other.
\sa operator==()
*/
/*!
Creates a copy of \a other
*/
QNetworkRequest &QNetworkRequest::operator=(const QNetworkRequest &other)
{
d = other.d;
return *this;
}
/*!
Returns the URL this network request is referring to.
\sa setUrl()
*/
QUrl QNetworkRequest::url() const
{
return d->url;
}
/*!
Sets the URL this network request is referring to to be \a url.
\sa url()
*/
void QNetworkRequest::setUrl(const QUrl &url)
{
d->url = url;
}
/*!
Returns the value of the known network header \a header if it is
present in this request. If it is not present, returns QVariant()
(i.e., an invalid variant).
\sa KnownHeaders, rawHeader(), setHeader()
*/
QVariant QNetworkRequest::header(KnownHeaders header) const
{
return d->cookedHeaders.value(header);
}
/*!
Sets the value of the known header \a header to be \a value,
overriding any previously set headers. This operation also sets
the equivalent raw HTTP header.
\sa KnownHeaders, setRawHeader(), header()
*/
void QNetworkRequest::setHeader(KnownHeaders header, const QVariant &value)
{
d->setCookedHeader(header, value);
}
/*!
Returns true if the raw header \a headerName is present in this
network request.
\sa rawHeader(), setRawHeader()
*/
bool QNetworkRequest::hasRawHeader(const QByteArray &headerName) const
{
return d->findRawHeader(headerName) != d->rawHeaders.constEnd();
}
/*!
Returns the raw form of header \a headerName. If no such header is
present, an empty QByteArray is returned, which may be
indistinguishable from a header that is present but has no content
(use hasRawHeader() to find out if the header exists or not).
Raw headers can be set with setRawHeader() or with setHeader().
\sa header(), setRawHeader()
*/
QByteArray QNetworkRequest::rawHeader(const QByteArray &headerName) const
{
QNetworkHeadersPrivate::RawHeadersList::ConstIterator it =
d->findRawHeader(headerName);
if (it != d->rawHeaders.constEnd())
return it->second;
return QByteArray();
}
/*!
Returns a list of all raw headers that are set in this network
request. The list is in the order that the headers were set.
\sa hasRawHeader(), rawHeader()
*/
QList<QByteArray> QNetworkRequest::rawHeaderList() const
{
return d->rawHeadersKeys();
}
/*!
Sets the header \a headerName to be of value \a headerValue. If \a
headerName corresponds to a known header (see
QNetworkRequest::KnownHeaders), the raw format will be parsed and
the corresponding "cooked" header will be set as well.
For example:
\snippet doc/src/snippets/code/src_network_access_qnetworkrequest.cpp 0
will also set the known header LastModifiedHeader to be the
QDateTime object of the parsed date.
Note: setting the same header twice overrides the previous
setting. To accomplish the behaviour of multiple HTTP headers of
the same name, you should concatenate the two values, separating
them with a comma (",") and set one single raw header.
\sa KnownHeaders, setHeader(), hasRawHeader(), rawHeader()
*/
void QNetworkRequest::setRawHeader(const QByteArray &headerName, const QByteArray &headerValue)
{
d->setRawHeader(headerName, headerValue);
}
/*!
Returns the attribute associated with the code \a code. If the
attribute has not been set, it returns \a defaultValue.
Note: this function does not apply the defaults listed in
QNetworkRequest::Attribute.
\sa setAttribute(), QNetworkRequest::Attribute
*/
QVariant QNetworkRequest::attribute(Attribute code, const QVariant &defaultValue) const
{
return d->attributes.value(code, defaultValue);
}
/*!
Sets the attribute associated with code \a code to be value \a
value. If the attribute is already set, the previous value is
discarded. In special, if \a value is an invalid QVariant, the
attribute is unset.
\sa attribute(), QNetworkRequest::Attribute
*/
void QNetworkRequest::setAttribute(Attribute code, const QVariant &value)
{
if (value.isValid())
d->attributes.insert(code, value);
else
d->attributes.remove(code);
}
#ifndef QT_NO_OPENSSL
/*!
Returns this network request's SSL configuration. By default, no
SSL settings are specified.
\sa setSslConfiguration()
*/
QSslConfiguration QNetworkRequest::sslConfiguration() const
{
if (!d->sslConfiguration)
d->sslConfiguration = new QSslConfiguration;
return *d->sslConfiguration;
}
/*!
Sets this network request's SSL configuration to be \a config. The
settings that apply are the private key, the local certificate,
the SSL protocol (SSLv2, SSLv3, TLSv1 where applicable) and the
ciphers that the SSL backend is allowed to use.
By default, no SSL configuration is set, which allows the backends
to choose freely what configuration is best for them.
\sa sslConfiguration(), QSslConfiguration::defaultConfiguration()
*/
void QNetworkRequest::setSslConfiguration(const QSslConfiguration &config)
{
if (!d->sslConfiguration)
d->sslConfiguration = new QSslConfiguration(config);
else
*d->sslConfiguration = config;
}
#endif
/*!
\since 4.6
Allows setting a reference to the \a object initiating
the request.
For example QtWebKit sets the originating object to the
QWebFrame that initiated the request.
\sa originatingObject()
*/
void QNetworkRequest::setOriginatingObject(QObject *object)
{
d->originatingObject = object;
}
/*!
\since 4.6
Returns a reference to the object that initiated this
network request; returns 0 if not set or the object has
been destroyed.
\sa setOriginatingObject()
*/
QObject *QNetworkRequest::originatingObject() const
{
return d->originatingObject.data();
}
static QByteArray headerName(QNetworkRequest::KnownHeaders header)
{
switch (header) {
case QNetworkRequest::ContentTypeHeader:
return "Content-Type";
case QNetworkRequest::ContentLengthHeader:
return "Content-Length";
case QNetworkRequest::LocationHeader:
return "Location";
case QNetworkRequest::LastModifiedHeader:
return "Last-Modified";
case QNetworkRequest::CookieHeader:
return "Cookie";
case QNetworkRequest::SetCookieHeader:
return "Set-Cookie";
// no default:
// if new values are added, this will generate a compiler warning
}
return QByteArray();
}
static QByteArray headerValue(QNetworkRequest::KnownHeaders header, const QVariant &value)
{
switch (header) {
case QNetworkRequest::ContentTypeHeader:
case QNetworkRequest::ContentLengthHeader:
return value.toByteArray();
case QNetworkRequest::LocationHeader:
switch (value.type()) {
case QVariant::Url:
return value.toUrl().toEncoded();
default:
return value.toByteArray();
}
case QNetworkRequest::LastModifiedHeader:
switch (value.type()) {
case QVariant::Date:
case QVariant::DateTime:
// generate RFC 1123/822 dates:
return QNetworkHeadersPrivate::toHttpDate(value.toDateTime());
default:
return value.toByteArray();
}
case QNetworkRequest::CookieHeader: {
QList<QNetworkCookie> cookies = qvariant_cast<QList<QNetworkCookie> >(value);
if (cookies.isEmpty() && value.userType() == qMetaTypeId<QNetworkCookie>())
cookies << qvariant_cast<QNetworkCookie>(value);
QByteArray result;
bool first = true;
foreach (const QNetworkCookie &cookie, cookies) {
if (!first)
result += "; ";
first = false;
result += cookie.toRawForm(QNetworkCookie::NameAndValueOnly);
}
return result;
}
case QNetworkRequest::SetCookieHeader: {
QList<QNetworkCookie> cookies = qvariant_cast<QList<QNetworkCookie> >(value);
if (cookies.isEmpty() && value.userType() == qMetaTypeId<QNetworkCookie>())
cookies << qvariant_cast<QNetworkCookie>(value);
QByteArray result;
bool first = true;
foreach (const QNetworkCookie &cookie, cookies) {
if (!first)
result += ", ";
first = false;
result += cookie.toRawForm(QNetworkCookie::Full);
}
return result;
}
}
return QByteArray();
}
static QNetworkRequest::KnownHeaders parseHeaderName(const QByteArray &headerName)
{
// headerName is not empty here
switch (tolower(headerName.at(0))) {
case 'c':
if (qstricmp(headerName.constData(), "content-type") == 0)
return QNetworkRequest::ContentTypeHeader;
else if (qstricmp(headerName.constData(), "content-length") == 0)
return QNetworkRequest::ContentLengthHeader;
else if (qstricmp(headerName.constData(), "cookie") == 0)
return QNetworkRequest::CookieHeader;
break;
case 'l':
if (qstricmp(headerName.constData(), "location") == 0)
return QNetworkRequest::LocationHeader;
else if (qstricmp(headerName.constData(), "last-modified") == 0)
return QNetworkRequest::LastModifiedHeader;
break;
case 's':
if (qstricmp(headerName.constData(), "set-cookie") == 0)
return QNetworkRequest::SetCookieHeader;
break;
}
return QNetworkRequest::KnownHeaders(-1); // nothing found
}
static QVariant parseHttpDate(const QByteArray &raw)
{
QDateTime dt = QNetworkHeadersPrivate::fromHttpDate(raw);
if (dt.isValid())
return dt;
return QVariant(); // transform an invalid QDateTime into a null QVariant
}
static QVariant parseCookieHeader(const QByteArray &raw)
{
QList<QNetworkCookie> result;
QList<QByteArray> cookieList = raw.split(';');
foreach (const QByteArray &cookie, cookieList) {
QList<QNetworkCookie> parsed = QNetworkCookie::parseCookies(cookie.trimmed());
if (parsed.count() != 1)
return QVariant(); // invalid Cookie: header
result += parsed;
}
return qVariantFromValue(result);
}
static QVariant parseHeaderValue(QNetworkRequest::KnownHeaders header, const QByteArray &value)
{
// header is always a valid value
switch (header) {
case QNetworkRequest::ContentTypeHeader:
// copy exactly, convert to QString
return QString::fromLatin1(value);
case QNetworkRequest::ContentLengthHeader: {
bool ok;
qint64 result = value.trimmed().toLongLong(&ok);
if (ok)
return result;
return QVariant();
}
case QNetworkRequest::LocationHeader: {
QUrl result = QUrl::fromEncoded(value, QUrl::StrictMode);
if (result.isValid() && !result.scheme().isEmpty())
return result;
return QVariant();
}
case QNetworkRequest::LastModifiedHeader:
return parseHttpDate(value);
case QNetworkRequest::CookieHeader:
return parseCookieHeader(value);
case QNetworkRequest::SetCookieHeader:
return qVariantFromValue(QNetworkCookie::parseCookies(value));
default:
Q_ASSERT(0);
}
return QVariant();
}
QNetworkHeadersPrivate::RawHeadersList::ConstIterator
QNetworkHeadersPrivate::findRawHeader(const QByteArray &key) const
{
RawHeadersList::ConstIterator it = rawHeaders.constBegin();
RawHeadersList::ConstIterator end = rawHeaders.constEnd();
for ( ; it != end; ++it)
if (qstricmp(it->first.constData(), key.constData()) == 0)
return it;
return end; // not found
}
QList<QByteArray> QNetworkHeadersPrivate::rawHeadersKeys() const
{
QList<QByteArray> result;
RawHeadersList::ConstIterator it = rawHeaders.constBegin(),
end = rawHeaders.constEnd();
for ( ; it != end; ++it)
result << it->first;
return result;
}
void QNetworkHeadersPrivate::setRawHeader(const QByteArray &key, const QByteArray &value)
{
if (key.isEmpty())
// refuse to accept an empty raw header
return;
setRawHeaderInternal(key, value);
parseAndSetHeader(key, value);
}
/*!
\internal
Sets the internal raw headers list to match \a list. The cooked headers
will also be updated.
If \a list contains duplicates, they will be stored, but only the first one
is usually accessed.
*/
void QNetworkHeadersPrivate::setAllRawHeaders(const RawHeadersList &list)
{
cookedHeaders.clear();
rawHeaders = list;
RawHeadersList::ConstIterator it = rawHeaders.constBegin();
RawHeadersList::ConstIterator end = rawHeaders.constEnd();
for ( ; it != end; ++it)
parseAndSetHeader(it->first, it->second);
}
void QNetworkHeadersPrivate::setCookedHeader(QNetworkRequest::KnownHeaders header,
const QVariant &value)
{
QByteArray name = headerName(header);
if (name.isEmpty()) {
// headerName verifies that \a header is a known value
qWarning("QNetworkRequest::setHeader: invalid header value KnownHeader(%d) received", header);
return;
}
if (value.isNull()) {
setRawHeaderInternal(name, QByteArray());
cookedHeaders.remove(header);
} else {
QByteArray rawValue = headerValue(header, value);
if (rawValue.isEmpty()) {
qWarning("QNetworkRequest::setHeader: QVariant of type %s cannot be used with header %s",
value.typeName(), name.constData());
return;
}
setRawHeaderInternal(name, rawValue);
cookedHeaders.insert(header, value);
}
}
void QNetworkHeadersPrivate::setRawHeaderInternal(const QByteArray &key, const QByteArray &value)
{
RawHeadersList::Iterator it = rawHeaders.begin();
while (it != rawHeaders.end()) {
if (qstricmp(it->first.constData(), key.constData()) == 0)
it = rawHeaders.erase(it);
else
++it;
}
if (value.isNull())
return; // only wanted to erase key
RawHeaderPair pair;
pair.first = key;
pair.second = value;
rawHeaders.append(pair);
}
void QNetworkHeadersPrivate::parseAndSetHeader(const QByteArray &key, const QByteArray &value)
{
// is it a known header?
QNetworkRequest::KnownHeaders parsedKey = parseHeaderName(key);
if (parsedKey != QNetworkRequest::KnownHeaders(-1)) {
if (value.isNull())
cookedHeaders.remove(parsedKey);
else
cookedHeaders.insert(parsedKey, parseHeaderValue(parsedKey, value));
}
}
// Fast month string to int conversion. This code
// assumes that the Month name is correct and that
// the string is at least three chars long.
static int name_to_month(const char* month_str)
{
switch (month_str[0]) {
case 'J':
switch (month_str[1]) {
case 'a':
return 1;
break;
case 'u':
switch (month_str[2] ) {
case 'n':
return 6;
break;
case 'l':
return 7;
break;
}
}
break;
case 'F':
return 2;
break;
case 'M':
switch (month_str[2] ) {
case 'r':
return 3;
break;
case 'y':
return 5;
break;
}
break;
case 'A':
switch (month_str[1]) {
case 'p':
return 4;
break;
case 'u':
return 8;
break;
}
break;
case 'O':
return 10;
break;
case 'S':
return 9;
break;
case 'N':
return 11;
break;
case 'D':
return 12;
break;
}
return 0;
}
QDateTime QNetworkHeadersPrivate::fromHttpDate(const QByteArray &value)
{
// HTTP dates have three possible formats:
// RFC 1123/822 - ddd, dd MMM yyyy hh:mm:ss "GMT"
// RFC 850 - dddd, dd-MMM-yy hh:mm:ss "GMT"
// ANSI C's asctime - ddd MMM d hh:mm:ss yyyy
// We only handle them exactly. If they deviate, we bail out.
int pos = value.indexOf(',');
QDateTime dt;
#ifndef QT_NO_DATESTRING
if (pos == -1) {
// no comma -> asctime(3) format
dt = QDateTime::fromString(QString::fromLatin1(value), Qt::TextDate);
} else {
// Use sscanf over QLocal/QDateTimeParser for speed reasons. See the
// QtWebKit performance benchmarks to get an idea.
if (pos == 3) {
char month_name[4];
int day, year, hour, minute, second;
if (sscanf(value.constData(), "%*3s, %d %3s %d %d:%d:%d 'GMT'", &day, month_name, &year, &hour, &minute, &second) == 6)
dt = QDateTime(QDate(year, name_to_month(month_name), day), QTime(hour, minute, second));
} else {
QLocale c = QLocale::c();
// eat the weekday, the comma and the space following it
QString sansWeekday = QString::fromLatin1(value.constData() + pos + 2);
// must be RFC 850 date
dt = c.toDateTime(sansWeekday, QLatin1String("dd-MMM-yy hh:mm:ss 'GMT'"));
}
}
#endif // QT_NO_DATESTRING
if (dt.isValid())
dt.setTimeSpec(Qt::UTC);
return dt;
}
QByteArray QNetworkHeadersPrivate::toHttpDate(const QDateTime &dt)
{
return QLocale::c().toString(dt, QLatin1String("ddd, dd MMM yyyy hh:mm:ss 'GMT'"))
.toLatin1();
}
QT_END_NAMESPACE