ObjXMPP  Check-in [f09ee1db55]

include ../extra.mk

SHARED_LIB = ${OBJXMPP_SHARED_LIB}
STATIC_LIB = ${OBJXMPP_STATIC_LIB}
FRAMEWORK = ${OBJXMPP_FRAMEWORK}
LIB_MAJOR = 0
LIB_MINOR = 0

SRCS = XMPPANONYMOUSAuth.m	\
       XMPPAuthenticator.m	\
       XMPPCallback.m		\
       XMPPConnection.m		\
       XMPPContact.m		\
       XMPPContactManager.m	\
       XMPPDiscoEntity.m	\
       XMPPDiscoIdentity.m	\
       XMPPDiscoNode.m		\

/*
 * Copyright (c) 2018, Jonathan Schleifer <js@heap.zone>
 *
 * https://heap.zone/objxmpp/
 *
 * 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"

OF_ASSUME_NONNULL_BEGIN

/*!
 * @brief A class to authenticate using SASL ANONYMOUS.
 */
@interface XMPPANONYMOUSAuth: XMPPAuthenticator
@end

OF_ASSUME_NONNULL_END

/*
 * Copyright (c) 2018, Jonathan Schleifer <js@heap.zone>
 *
 * https://heap.zone/objxmpp/
 *
 * 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.
 */

#include "config.h"

#import "XMPPANONYMOUSAuth.h"

@implementation XMPPANONYMOUSAuth: XMPPAuthenticator
@end

 */
@interface XMPPConnection: OFObject <OFXMLParserDelegate,
    OFXMLElementBuilderDelegate>
{
	OF_KINDOF(OFTCPSocket *) _socket;
	OFXMLParser *_parser, *_oldParser;
	OFXMLElementBuilder *_elementBuilder, *_oldElementBuilder;
	OFString *_Nullable _username, *_Nullable _password, *_Nullable _server;
	OFString *_Nullable _resource;
	bool _usesAnonymousAuthentication;
	OFString *_Nullable _privateKeyFile, *_Nullable _certificateFile;
	const char *_Nullable _privateKeyPassphrase;
	OFString *_Nullable _domain, *_Nullable _domainToASCII;
	XMPPJID *_Nullable _JID;
	uint16_t _port;
	id <XMPPStorage> _Nullable _dataStorage;
	OFString *_Nullable _language;
	XMPPMulticastDelegate *_delegates;
	OFMutableDictionary OF_GENERIC(OFString *, XMPPCallback *) *_callbacks;
	XMPPAuthenticator *_authModule;
	bool _streamOpen, _needsSession, _encryptionRequired, _encrypted;


	bool _supportsRosterVersioning, _supportsStreamManagement;

	unsigned int _lastID;
}

/*!
 * @brief The username to use for authentication.
 */
@property OF_NULLABLE_PROPERTY (nonatomic, copy) OFString *username;

/*!
 * @brief The password to use for authentication.
 */
@property OF_NULLABLE_PROPERTY (nonatomic, copy) OFString *password;

/*!
 * @brief The server to use for the connection.
 *
 * This is useful if the address of the server is different from the domain.
 */
@property OF_NULLABLE_PROPERTY (nonatomic, copy) OFString *server;

/*!
 * @brief The domain to connect to.
 */
@property OF_NULLABLE_PROPERTY (nonatomic, copy) OFString *domain;

/*!
 * @brief The resource to request for the connection.
 */
@property OF_NULLABLE_PROPERTY (nonatomic, copy) OFString *resource;

/*!
 * @brief Whether the connection uses SASL ANONYMOUS authentication.
 */
@property (nonatomic) bool usesAnonymousAuthentication;

/*!
 * @brief The language to request for the connection.
 */
@property OF_NULLABLE_PROPERTY (nonatomic, copy) OFString *language;

/*!
 * @brief A private key file to use for authentication.
 */
@property OF_NULLABLE_PROPERTY (nonatomic, copy) OFString *privateKeyFile;

/*!
 * @brief A certificate file to use for authentication.
 */
@property OF_NULLABLE_PROPERTY (nonatomic, copy) OFString *certificateFile;

/*!
 * @brief The JID the server assigned to the connection after binding.
 */
@property OF_NULLABLE_PROPERTY (readonly, nonatomic) XMPPJID *JID;

/*!
 * @brief The port to connect to.
 */
@property (nonatomic) uint16_t port;

/*!
 * @brief An object for data storage, conforming to the XMPPStorage protocol.
 */
@property OF_NULLABLE_PROPERTY (nonatomic, assign) id <XMPPStorage> dataStorage;

/*!
 * @brief The socket used for the connection.
 */
@property (readonly, nonatomic) OF_KINDOF(OFTCPSocket *) socket;

/*!
 * @brief Whether encryption is required.
 */
@property (nonatomic) bool encryptionRequired;

/*!
 * @brief Whether the connection is encrypted.
 */
@property (readonly, nonatomic) bool encrypted;

/*!
 * @brief Whether roster versioning is supported.
 */
@property (readonly, nonatomic) bool supportsRosterVersioning;

/*!
 * @brief Whether stream management is supported.
 */
@property (readonly, nonatomic) bool supportsStreamManagement;

/*!
 * @brief Creates a new autoreleased XMPPConnection.
 *
 * @return A new autoreleased XMPPConnection
 */
+ (instancetype)connection;

/*!
 * @brief Adds the specified delegate.

#import <ObjOpenSSL/SSLSocket.h>
#import <ObjOpenSSL/SSLInvalidCertificateException.h>
#import <ObjOpenSSL/X509Certificate.h>

#import <ObjFW/OFInvalidArgumentException.h>

#import "XMPPConnection.h"
#import "XMPPANONYMOUSAuth.h"
#import "XMPPCallback.h"
#import "XMPPEXTERNALAuth.h"
#import "XMPPExceptions.h"
#import "XMPPIQ.h"
#import "XMPPJID.h"
#import "XMPPMessage.h"
#import "XMPPMulticastDelegate.h"
#import "XMPPPLAINAuth.h"
#import "XMPPPresence.h"
#import "XMPPSCRAMAuth.h"
#import "XMPPStanza.h"
#import "XMPPXMLElementBuilder.h"

#import "namespaces.h"

#import <ObjFW/macros.h>

#define BUFFER_LENGTH 512

@interface XMPPConnection ()

- (OFString *)xmpp_IDNAToASCII: (OFString *)domain;
- (XMPPMulticastDelegate *)xmpp_delegates;
@end

@implementation XMPPConnection
@synthesize username = _username, resource = _resource, server = _server;
@synthesize domain = _domain, password = _password, JID = _JID, port = _port;
@synthesize usesAnonymousAuthentication = _usesAnonymousAuthentication;
@synthesize language = _language, privateKeyFile = _privateKeyFile;
@synthesize certificateFile = _certificateFile, socket = _socket;
@synthesize encryptionRequired = _encryptionRequired, encrypted = _encrypted;
@synthesize supportsRosterVersioning = _supportsRosterVersioning;
@synthesize supportsStreamManagement = _supportsStreamManagement;

+ (instancetype)connection

	if ([element elementForName: @"sm"
			  namespace: XMPP_NS_SM] != nil)
		_supportsStreamManagement = true;

	if (mechs != nil) {
		for (OFXMLElement *mech in [mechs children])
			[mechanisms addObject: [mech stringValue]];

		if (_usesAnonymousAuthentication) {
			if (![mechanisms containsObject: @"ANONYMOUS"])
				@throw [XMPPAuthFailedException
				    exceptionWithConnection: self
						     reason: @"No supported "
							     @"auth mechanism"];

			_authModule = [[XMPPANONYMOUSAuth alloc] init];
			[self xmpp_sendAuth: @"ANONYMOUS"];
			return;
		}

		if (_privateKeyFile != nil && _certificateFile != nil &&
		    [mechanisms containsObject: @"EXTERNAL"]) {
			_authModule = [[XMPPEXTERNALAuth alloc] init];
			[self xmpp_sendAuth: @"EXTERNAL"];
			return;
		}

			_authModule = [[XMPPPLAINAuth alloc]
			    initWithAuthcid: _username
				   password: _password];
			[self xmpp_sendAuth: @"PLAIN"];
			return;
		}

		@throw [XMPPAuthFailedException
		    exceptionWithConnection: self
				     reason: @"No supported auth mechanism"];

	}

	if (session != nil && [session elementForName: @"optional"
					    namespace: XMPP_NS_SESSION] == nil)
		_needsSession = true;

	if (bind != nil) {

	OFXMLElement *authTag;
	OFData *initialMessage = [_authModule initialMessage];

	authTag = [OFXMLElement elementWithName: @"auth"
				      namespace: XMPP_NS_SASL];
	[authTag addAttributeWithName: @"mechanism"
			  stringValue: authName];
	if (initialMessage != nil) {
		if ([initialMessage count] == 0)
			[authTag setStringValue: @"="];
		else
			[authTag setStringValue:
			    [initialMessage stringByBase64Encoding]];
	}