Qssl

[spirit]

if server uses ssl connection then you have to use QSsl* classes and for using them you have to build Qt with OpenSSL.

[faldzip]

Here is a part of httpwindow.cpp from Qt Examples:

#ifndef QT_NO_OPENSSL
void HttpWindow::sslErrors(const QList<QSslError> &errors)
{
    QString errorString;
    foreach (const QSslError &error, errors) {
        if (!errorString.isEmpty())
            errorString += ", ";
        errorString += error.errorString();
    }
 
    if (QMessageBox::warning(this, tr("HTTP Example"),
                             tr("One or more SSL errors has occurred: %1").arg(errorString),
                             QMessageBox::Ignore | QMessageBox::Abort) == QMessageBox::Ignore) {
        http->ignoreSslErrors();
    }
}
#endif

#ifndef QT_NO_OPENSSL
void HttpWindow::sslErrors(const QList<QSslError> &errors)
{
    QString errorString;
    foreach (const QSslError &error, errors) {
        if (!errorString.isEmpty())
            errorString += ", ";
        errorString += error.errorString();
    }

    if (QMessageBox::warning(this, tr("HTTP Example"),
                             tr("One or more SSL errors has occurred: %1").arg(errorString),
                             QMessageBox::Ignore | QMessageBox::Abort) == QMessageBox::Ignore) {
        http->ignoreSslErrors();
    }
}
#endif

To copy to clipboard, switch view to plain text mode 

as you see it's surrounded by

#ifndef QT_NO_OPENSSL
// . . .
#endif

#ifndef QT_NO_OPENSSL
// . . .
#endif

To copy to clipboard, switch view to plain text mode 

so if you compile Qt without SSL support then this example still work but can't handle SSL connections (QT_NO_OPENSSL will be defined so that code would be, let's say, cut out). You said that you need to download files from server with SSL - and it's not working, but it's working for non-SSL connections, so the reason would be in QT_NO_OPENSSL is defined == Qt built without OpenSSL.

[faldzip]

What's more, same thing you can see in qsslsocket.h:

#ifndef QT_NO_OPENSSL
 
class QDir;
class QSslCipher;
class QSslCertificate;
class QSslConfiguration;
 
class QSslSocketPrivate;
class Q_NETWORK_EXPORT QSslSocket : public QTcpSocket
{
	// . . .
};
 
#endif // QT_NO_OPENSSL

#ifndef QT_NO_OPENSSL

class QDir;
class QSslCipher;
class QSslCertificate;
class QSslConfiguration;

class QSslSocketPrivate;
class Q_NETWORK_EXPORT QSslSocket : public QTcpSocket
{
	// . . .
};

#endif // QT_NO_OPENSSL

To copy to clipboard, switch view to plain text mode 

So there is no class QSslSocket if you didn't build your Qt with OpenSSL.

[tpthyd]

that mean if i build qt with openssl , can i download files from server with out change of http example program..(../qt/4.4.1/examples/network/http).

i am new to qt. could u plz tell me how to buid qt with openssl?

[spirit]

yes, there is no needed to change your example, just rebuild it.
there are to options how to build it:
-- download sources and then build them.
-- download www.openssl.org/related/binaries.html.

the second option is easier.
then all you need it's set environment variables for OpenSSL.

SET LIB=D:\develop\OpenSSL\lib\VC;%LIB% -- if you use MS VS or
SET LIB=D:\develop\OpenSSL\lib\MinGW;%LIB% -- if you use MinGW
SET INCLUDE=D:\develop\OpenSSL\include;%INCLUDE%

the next step -- you need to configure your Qt.
there are to configure options:

-openssl ........... Compile in run-time OpenSSL support
-openssl-linked .... Compile in linked OpenSSL support

I preferred then first option.
that's all.

[tpthyd]

thank you very much, thanks a lot for u r great infromation. i'll try as u told

[srikanth_trulyit]

Hi,

Im also facing the similar problem from a couple of days. I want to set openssl support for qt 4.5 on winxp sp2 machine

I configured as
configure -openssl -I C:\OpenSSL\include\openssl -L C:\OpenSSL\lib\MinGW -webkit

then did mingw32-make

still i get errors when make is done on ssl folder of qt
meanwhile after configure is done, if i open makefile in C:\Qt\2009.01\qt, it still doest show openssl includes and libs i supplied with configure.

Im a newbie and im facing this issue for quite some time now.
Kindly let me know where im getting wrong. I followed the above mentioned steps (previous posts)
Please provide me exact steps of building qt 4.5 with openssl.

Thanks,
Srikanth

[spirit]

try to set path to OpenSSL includes using

SET INCLUDE=D:\develop\OpenSSL\include;%INCLUDE%

not using

configure -openssl -I C:\OpenSSL\include\openssl -L C:\OpenSSL\lib\MinGW

.

[srikanth_trulyit]

Hi,

Im also facing the similar problem from a couple of days. I want to set openssl support for qt 4.5 on winxp sp2 machine

I configured as
configure -openssl -I C:\OpenSSL\include\openssl -L C:\OpenSSL\lib\MinGW -webkit

then did mingw32-make

still i get errors when make is done on ssl folder of qt
meanwhile after configure is done, if i open makefile in C:\Qt\2009.01\qt, it still doest show openssl includes and libs i supplied with configure.

Im a newbie and im facing this issue for quite some time now.
Kindly let me know where im getting wrong. I followed the above mentioned steps (previous posts)
Please provide me exact steps of building qt 4.5 with openssl.

Thanks,
Srikanth

[srikanth_trulyit]

UPDATE:
i paste here some errors when mingw32-make is executed after configure


ssl\qsslcertificate.cpp:441: error: `X509_PUBKEY' undeclared (first use this fun
ction)
ssl\qsslcertificate.cpp:441: error: `xkey' undeclared (first use this function)
ssl\qsslcertificate.cpp:441: error: invalid use of undefined type `struct x509_s
t'
../../include/QtNetwork/../../src/network/ssl/qsslcertificate.h:52: error: forwa
rd declaration of `struct x509_st'
ssl\qsslcertificate.cpp:442: error: `EVP_PKEY' undeclared (first use this functi
on)
ssl\qsslcertificate.cpp:442: error: `pkey' undeclared (first use this function)
ssl\qsslcertificate.cpp:442: error: `q_X509_PUBKEY_get' undeclared (first use th
is function)
ssl\qsslcertificate.cpp:445: error: `EVP_PKEY_RSA' undeclared (first use this fu
nction)
ssl\qsslcertificate.cpp:446: error: 'class QSslKeyPrivate' has no member named '
rsa'
ssl\qsslcertificate.cpp:446: error: `q_EVP_PKEY_get1_RSA' undeclared (first use
this function)
ssl\qsslcertificate.cpp:449: error: `EVP_PKEY_DSA' undeclared (first use this fu
nction)
ssl\qsslcertificate.cpp:450: error: 'class QSslKeyPrivate' has no member named '
dsa'
ssl\qsslcertificate.cpp:450: error: `q_EVP_PKEY_get1_DSA' undeclared (first use
this function)
ssl\qsslcertificate.cpp:453: error: `EVP_PKEY_DH' undeclared (first use this fun
ction)
ssl\qsslcertificate.cpp:459: error: `q_EVP_PKEY_free' cannot be used as a functi
on
ssl\qsslcertificate.cpp: In static member function `static QSslCertificate QSslC
ertificatePrivate::QSslCertificate_from_X509(X509* )':
ssl\qsslcertificate.cpp:666: error: `q_X509_get_issuer_name' undeclared (first u
se this function)
ssl\qsslcertificate.cpp:666: error: `q_X509_NAME_oneline' cannot be used as a fu
nction
ssl\qsslcertificate.cpp:668: error: `q_X509_get_subject_name' undeclared (first
use this function)
ssl\qsslcertificate.cpp:668: error: `q_X509_NAME_oneline' cannot be used as a fu
nction
ssl\qsslcertificate.cpp:670: error: `ASN1_TIME' undeclared (first use this funct
ion)
ssl\qsslcertificate.cpp:670: error: `nbef' undeclared (first use this function)
ssl\qsslcertificate.cpp:670: error: `X509_get_notBefore' undeclared (first use t
his function)
ssl\qsslcertificate.cpp:671: error: `naft' undeclared (first use this function)
ssl\qsslcertificate.cpp:671: error: `X509_get_notAfter' undeclared (first use th
is function)
mingw32-make[2]: *** [tmp/obj/debug_shared/qsslcertificate.o] Error 1
mingw32-make[2]: Leaving directory `C:/Qt/2009.02/qt/src/network'
mingw32-make[1]: *** [debug-all] Error 2
mingw32-make[1]: Leaving directory `C:/Qt/2009.02/qt/src/network'
mingw32-make: *** [sub-network-make_default-ordered] Error 2

[srikanth_trulyit]

Hi spirit,

Thanks for the reply, I did as you mentioned.

added include path to INCLUDE and executed configure as

configure -openssl -L C:\OpenSSL\lib\MinGW -webkit

when im done with configure, i executed mingw32-make ans i still get those compilation errors as i mentioned. I still dont see any openssl rules in makefile

Thanks,
Srikanth