XMPPAnonymousAuthentication.m
3.08 KB
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#import "XMPPAnonymousAuthentication.h"
#import "XMPP.h"
#import "XMPPLogging.h"
#import "XMPPInternal.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
/**
* Seeing a return statements within an inner block
* can sometimes be mistaken for a return point of the enclosing method.
* This makes inline blocks a bit easier to read.
**/
#define return_from_block return
@implementation XMPPAnonymousAuthentication
{
#if __has_feature(objc_arc_weak)
__weak XMPPStream *xmppStream;
#else
__unsafe_unretained XMPPStream *xmppStream;
#endif
}
+ (NSString *)mechanismName
{
return @"ANONYMOUS";
}
- (id)initWithStream:(XMPPStream *)stream
{
if ((self = [super init]))
{
xmppStream = stream;
}
return self;
}
- (id)initWithStream:(XMPPStream *)stream password:(NSString *)password
{
return [self initWithStream:stream];
}
- (BOOL)start:(NSError **)errPtr
{
// <auth xmlns="urn:ietf:params:xml:ns:xmpp-sasl" mechanism="ANONYMOUS" />
NSXMLElement *auth = [NSXMLElement elementWithName:@"auth" xmlns:@"urn:ietf:params:xml:ns:xmpp-sasl"];
[auth addAttributeWithName:@"mechanism" stringValue:@"ANONYMOUS"];
[xmppStream sendAuthElement:auth];
return YES;
}
- (XMPPHandleAuthResponse)handleAuth:(NSXMLElement *)authResponse
{
// 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 (XMPPAnonymousAuthentication)
- (BOOL)supportsAnonymousAuthentication
{
return [self supportsAuthenticationMechanism:[XMPPAnonymousAuthentication mechanismName]];
}
- (BOOL)authenticateAnonymously:(NSError **)errPtr
{
XMPPLogTrace();
__block BOOL result = YES;
__block NSError *err = nil;
dispatch_block_t block = ^{ @autoreleasepool {
if ([self supportsAnonymousAuthentication])
{
XMPPAnonymousAuthentication *anonymousAuth = [[XMPPAnonymousAuthentication alloc] initWithStream:self];
result = [self authenticate:anonymousAuth error:&err];
}
else
{
NSString *errMsg = @"The server does not support anonymous authentication.";
NSDictionary *info = @{NSLocalizedDescriptionKey : errMsg};
err = [NSError errorWithDomain:XMPPStreamErrorDomain code:XMPPStreamUnsupportedAction userInfo:info];
result = NO;
}
}};
if (dispatch_get_specific(self.xmppQueueTag))
block();
else
dispatch_sync(self.xmppQueue, block);
if (errPtr)
*errPtr = err;
return result;
}
@end