157 lines
4.0 KiB
Objective-C
157 lines
4.0 KiB
Objective-C
#import "XMPPDeprecatedPlainAuthentication.h"
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#import "XMPP.h"
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#import "XMPPInternal.h"
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#import "XMPPLogging.h"
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#import "NSXMLElement+XMPP.h"
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#if ! __has_feature(objc_arc)
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#warning This file must be compiled with ARC. Use -fobjc-arc flag (or convert project to ARC).
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#endif
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// Log levels: off, error, warn, info, verbose
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#if DEBUG
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static const int xmppLogLevel = XMPP_LOG_LEVEL_INFO; // | XMPP_LOG_FLAG_TRACE;
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#else
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static const int xmppLogLevel = XMPP_LOG_LEVEL_WARN;
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#endif
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@implementation XMPPDeprecatedPlainAuthentication
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{
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#if __has_feature(objc_arc_weak)
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__weak XMPPStream *xmppStream;
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#else
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__unsafe_unretained XMPPStream *xmppStream;
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#endif
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NSString *password;
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}
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+ (NSString *)mechanismName
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{
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// This deprecated method isn't listed in the normal mechanisms list
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return nil;
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}
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- (id)initWithStream:(XMPPStream *)stream password:(NSString *)inPassword
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{
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if ((self = [super init]))
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{
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xmppStream = stream;
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password = inPassword;
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}
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return self;
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}
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- (BOOL)start:(NSError **)errPtr
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{
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XMPPLogTrace();
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// The server does not appear to support SASL authentication (at least any type we can use)
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// So we'll revert back to the old fashioned jabber:iq:auth mechanism
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XMPPJID *myJID = xmppStream.myJID;
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NSString *username = [myJID user];
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NSString *resource = [myJID resource];
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if ([resource length] == 0)
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{
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// If resource is nil or empty, we need to auto-create one
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resource = [XMPPStream generateUUID];
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}
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NSXMLElement *query = [NSXMLElement elementWithName:@"query" xmlns:@"jabber:iq:auth"];
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[query addChild:[NSXMLElement elementWithName:@"username" stringValue:username]];
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[query addChild:[NSXMLElement elementWithName:@"resource" stringValue:resource]];
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[query addChild:[NSXMLElement elementWithName:@"password" stringValue:password]];
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XMPPIQ *iq = [XMPPIQ iqWithType:@"set"];
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[iq addChild:query];
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[xmppStream sendAuthElement:iq];
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return YES;
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}
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- (XMPPHandleAuthResponse)handleAuth:(NSXMLElement *)authResponse
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{
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XMPPLogTrace();
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// We used the old fashioned jabber:iq:auth mechanism
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if ([[authResponse attributeStringValueForName:@"type"] isEqualToString:@"error"])
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{
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return XMPP_AUTH_FAIL;
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}
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else
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{
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return XMPP_AUTH_SUCCESS;
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}
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}
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- (BOOL)shouldResendOpeningNegotiationAfterSuccessfulAuthentication
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{
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return NO;
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}
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@end
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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#pragma mark -
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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@implementation XMPPStream (XMPPDeprecatedPlainAuthentication)
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/**
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* This method only applies to servers that don't support XMPP version 1.0, as defined in RFC 3920.
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* With these servers, we attempt to discover supported authentication modes via the jabber:iq:auth namespace.
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**/
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- (BOOL)supportsDeprecatedPlainAuthentication
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{
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__block BOOL result = NO;
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dispatch_block_t block = ^{ @autoreleasepool {
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// The root element can be properly queried for authentication mechanisms anytime after the
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// stream:features are received, and TLS has been setup (if required)
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if (self.state >= STATE_XMPP_POST_NEGOTIATION)
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{
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// Search for an iq element within the rootElement.
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// Recall that some servers might stupidly add a "jabber:client" namespace which might cause problems
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// if we simply used the elementForName method.
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NSXMLElement *iq = nil;
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NSUInteger i, count = [self.rootElement childCount];
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for (i = 0; i < count; i++)
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{
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NSXMLNode *childNode = [self.rootElement childAtIndex:i];
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if ([childNode kind] == NSXMLElementKind)
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{
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if ([[childNode name] isEqualToString:@"iq"])
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{
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iq = (NSXMLElement *)childNode;
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}
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}
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}
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NSXMLElement *query = [iq elementForName:@"query" xmlns:@"jabber:iq:auth"];
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NSXMLElement *plain = [query elementForName:@"password"];
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result = (plain != nil);
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}
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}};
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if (dispatch_get_specific(self.xmppQueueTag))
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block();
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else
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dispatch_sync(self.xmppQueue, block);
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return result;
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}
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@end
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