/*
* Copyright (c) 2011, Florian Zeitz <florob@babelmonkeys.de>
*
* https://webkeks.org/git/?p=objxmpp.git
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice is present in all copies.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#import <ObjFW/ObjFW.h>
#import "XMPPAuthenticator.h"
#import "XMPPConnection.h"
/**
* \brief A class to authenticate using SCRAM
*/
@interface XMPPSCRAMAuth: XMPPAuthenticator
{
Class _hashType;
OFString *_cNonce;
OFString *_GS2Header;
OFString *_clientFirstMessageBare;
OFDataArray *_serverSignature;
XMPPConnection *_connection;
bool _plusAvailable;
bool _authenticated;
}
/**
* \brief Creates a new autoreleased XMPPSCRAMAuth with an authcid and password.
*
* \param authcid The authcid to authenticate with
* \param password The password to authenticate with
* \param connection The connection over which authentication is done
* \param hash The class to use for calulating hashes
* \param plusAvailable Whether the PLUS variant was offered
* \return A new autoreleased XMPPSCRAMAuth
*/
+ (instancetype)SCRAMAuthWithAuthcid: (OFString*)authcid
password: (OFString*)password
connection: (XMPPConnection*)connection
hash: (Class)hash
plusAvailable: (bool)plusAvailable;
/**
* \brief Creates a new autoreleased XMPPSCRAMAuth with an authzid, authcid and
* password.
*
* \param authzid The authzid to get authorization for
* \param authcid The authcid to authenticate with
* \param password The password to authenticate with
* \param connection The connection over which authentication is done
* \param hash The class to use for calulating hashes
* \param plusAvailable Whether the PLUS variant was offered
* \return A new autoreleased XMPPSCRAMAuth
*/
+ (instancetype)SCRAMAuthWithAuthzid: (OFString*)authzid
authcid: (OFString*)authcid
password: (OFString*)password
connection: (XMPPConnection*)connection
hash: (Class)hash
plusAvailable: (bool)plusAvailable;
/**
* \brief Initializes an already allocated XMPPSCRAMAuth with an authcid and
* password.
*
* \param authcid The authcid to authenticate with
* \param password The password to authenticate with
* \param connection The connection over which authentication is done
* \param hash The class to use for calulating hashes
* \param plusAvailable Whether the PLUS variant was offered
* \return A initialized XMPPSCRAMAuth
*/
- initWithAuthcid: (OFString*)authcid
password: (OFString*)password
connection: (XMPPConnection*)connection
hash: (Class)hash
plusAvailable: (bool)plusAvailable;
/**
* \brief Initializes an already allocated XMPPSCRAMAuth with a authzid,
* authcid and password.
*
* \param authzid The authzid to get authorization for
* \param authcid The authcid to authenticate with
* \param password The password to authenticate with
* \param connection The connection over which authentication is done
* \param hash The class to use for calulating hashes
* \param plusAvailable Whether the PLUS variant was offered
* \return A initialized XMPPSCRAMAuth
*/
- initWithAuthzid: (OFString*)authzid
authcid: (OFString*)authcid
password: (OFString*)password
connection: (XMPPConnection*)connection
hash: (Class)hash
plusAvailable: (bool)plusAvailable;
/// \cond internal
- (OFString*)XMPP_genNonce;
- (const uint8_t*)XMPP_HMACWithKey: (OFDataArray*)key
data: (OFDataArray*)data;
- (OFDataArray*)XMPP_hiWithData: (OFDataArray*)str
salt: (OFDataArray*)salt
iterationCount: (intmax_t)i;
- (OFDataArray*)XMPP_parseServerFirstMessage: (OFDataArray*)data;
- (OFDataArray*)XMPP_parseServerFinalMessage: (OFDataArray*)data;
/// \endcond
@end