- Update

Authentication/Plain/XMPPPlainAuthentication.h

@@ -0,0 +1,22 @@
+#import <Foundation/Foundation.h>
+#import "XMPPSASLAuthentication.h"
+#import "XMPPStream.h"
+
+
+@interface XMPPPlainAuthentication : NSObject <XMPPSASLAuthentication>
+
+// This class implements the XMPPSASLAuthentication protocol.
+// 
+// See XMPPSASLAuthentication.h for more information.
+
+@end
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+@interface XMPPStream (XMPPPlainAuthentication)
+
+- (BOOL)supportsPlainAuthentication;
+
+@end

Authentication/Plain/XMPPPlainAuthentication.m

@@ -0,0 +1,114 @@
+#import "XMPPPlainAuthentication.h"
+#import "XMPP.h"
+#import "XMPPLogging.h"
+#import "XMPPInternal.h"
+#import "NSData+XMPP.h"
+#import "NSXMLElement+XMPP.h"
+
+#if ! __has_feature(objc_arc)
+#warning This file must be compiled with ARC. Use -fobjc-arc flag (or convert project to ARC).
+#endif
+
+// Log levels: off, error, warn, info, verbose
+#if DEBUG
+  static const int xmppLogLevel = XMPP_LOG_LEVEL_INFO; // | XMPP_LOG_FLAG_TRACE;
+#else
+  static const int xmppLogLevel = XMPP_LOG_LEVEL_WARN;
+#endif
+
+
+@implementation XMPPPlainAuthentication
+{
+  #if __has_feature(objc_arc_weak)
+	__weak XMPPStream *xmppStream;
+  #else
+	__unsafe_unretained XMPPStream *xmppStream;
+  #endif
+	
+	NSString *username;
+	NSString *password;
+}
+
++ (NSString *)mechanismName
+{
+	return @"PLAIN";
+}
+
+- (id)initWithStream:(XMPPStream *)stream password:(NSString *)inPassword
+{
+	return [self initWithStream:stream username:nil password:inPassword];
+}
+
+- (id)initWithStream:(XMPPStream *)stream username:(NSString *)inUsername password:(NSString *)inPassword
+{
+	if ((self = [super init]))
+	{
+		xmppStream = stream;
+		username = inUsername;
+		password = inPassword;
+	}
+	return self;
+}
+
+- (BOOL)start:(NSError **)errPtr
+{
+	XMPPLogTrace();
+	
+	// From RFC 4616 - PLAIN SASL Mechanism:
+	// [authzid] UTF8NUL authcid UTF8NUL passwd
+	// 
+	// authzid: authorization identity
+	// authcid: authentication identity (username)
+	// passwd : password for authcid
+	
+	NSString *authUsername = username;
+	if (!authUsername)
+	{
+		authUsername = [xmppStream.myJID user];
+	}
+	
+	NSString *payload = [NSString stringWithFormat:@"\0%@\0%@", authUsername, password];
+	NSString *base64 = [[payload dataUsingEncoding:NSUTF8StringEncoding] xmpp_base64Encoded];
+	
+	// <auth xmlns="urn:ietf:params:xml:ns:xmpp-sasl" mechanism="PLAIN">Base-64-Info</auth>
+	
+	NSXMLElement *auth = [NSXMLElement elementWithName:@"auth" xmlns:@"urn:ietf:params:xml:ns:xmpp-sasl"];
+	[auth addAttributeWithName:@"mechanism" stringValue:@"PLAIN"];
+	[auth setStringValue:base64];
+	
+	[xmppStream sendAuthElement:auth];
+	
+	return YES;
+}
+
+- (XMPPHandleAuthResponse)handleAuth:(NSXMLElement *)authResponse
+{
+	XMPPLogTrace();
+	
+	// We're expecting a success response.
+	// If we get anything else we can safely assume it's the equivalent of a failure response.
+	
+	if ([[authResponse name] isEqualToString:@"success"])
+	{
+		return XMPP_AUTH_SUCCESS;
+	}
+	else
+	{
+		return XMPP_AUTH_FAIL;
+	}
+}
+
+@end
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+@implementation XMPPStream (XMPPPlainAuthentication)
+
+- (BOOL)supportsPlainAuthentication
+{
+	return [self supportsAuthenticationMechanism:[XMPPPlainAuthentication mechanismName]];
+}
+
+@end