Save config faild When I configure my iOS 8.0 VPN connection - objective-c

I use Network Extension framework to configure and manage VPN connections. When I running my code ,it will log error message :"Save config faild[(null)]" before I finish install the config file. I’ve written my code as following:
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
self.vpnManager = [NEVPNManager sharedManager];
[_vpnManager loadFromPreferencesWithCompletionHandler:^(NSError * _Nullable error) {
if (error) {
NSLog(#"Load config failed [%#]", error.localizedDescription);
return ;
}
// config IPSec protocol
NEVPNProtocolIKEv2 *p = _vpnManager.protocol;
if (p) {
}else{
p = [[NEVPNProtocolIKEv2 alloc]init];
}
p.username = #"qlvpn";
p.serverAddress = #"my serverAddress";
// get password persistent reference from keychain
p.passwordReference = [self searchKeychainCopyMatching:#"kd2014#"];
// If password doesn't exist in keychain, should create it beforehand.
if (!p.passwordReference) {
[self createKeychainValue:#"kd2014#" forIdentifier:#"kd2014#"];
p.passwordReference = [self searchKeychainCopyMatching:#"kd2014#"];
}
p.authenticationMethod = NEVPNIKEAuthenticationMethodSharedSecret;
p.sharedSecretReference = [self searchKeychainCopyMatching:#"PSK"];
if (!p.sharedSecretReference) {
[self createKeychainValue:#"qlvpn_kd2014#" forIdentifier:#"PSK"];
p.sharedSecretReference = [self searchKeychainCopyMatching:#"PSK"];
}
p.localIdentifier = #"qlvpn.client";
p.remoteIdentifier = #"qlvpn.server";
p.useExtendedAuthentication = YES;
p.disconnectOnSleep = NO;
_vpnManager.protocol = p;
_vpnManager.localizedDescription = #"IKEv2 Demo";
[_vpnManager saveToPreferencesWithCompletionHandler:^(NSError * _Nullable error) {
NSLog(#"Save config faild[%#]",error.localizedDescription);
}];
}];
}
The keyChain method like this:
static NSString * const serviceName = #"qlvpn.vpn_config";
- (NSMutableDictionary *)newSearchDictionary:(NSString *)identifier {
NSMutableDictionary *searchDictionary = [[NSMutableDictionary alloc] init];
[searchDictionary setObject:(__bridge id)kSecClassGenericPassword forKey:(__bridge id)kSecClass];
NSData *encodedIdentifier = [identifier dataUsingEncoding:NSUTF8StringEncoding];
[searchDictionary setObject:encodedIdentifier forKey:(__bridge id)kSecAttrGeneric];
[searchDictionary setObject:encodedIdentifier forKey:(__bridge id)kSecAttrAccount];
[searchDictionary setObject:serviceName forKey:(__bridge id)kSecAttrService];
return searchDictionary;
}
- (NSData *)searchKeychainCopyMatching:(NSString *)identifier {
NSMutableDictionary *searchDictionary = [self newSearchDictionary:identifier];
// Add search attributes
[searchDictionary setObject:(__bridge id)kSecMatchLimitOne forKey:(__bridge id)kSecMatchLimit];
// Add search return types
// Must be persistent ref !!!!
[searchDictionary setObject:#YES forKey:(__bridge id)kSecReturnPersistentRef];
CFTypeRef result = NULL;
SecItemCopyMatching((__bridge CFDictionaryRef)searchDictionary, &result);
return (__bridge_transfer NSData *)result;
}
- (BOOL)createKeychainValue:(NSString *)password forIdentifier:(NSString *)identifier {
NSMutableDictionary *dictionary = [self newSearchDictionary:identifier];
OSStatus status = SecItemDelete((__bridge CFDictionaryRef)dictionary);
NSData *passwordData = [password dataUsingEncoding:NSUTF8StringEncoding];
[dictionary setObject:passwordData forKey:(__bridge id)kSecValueData];
status = SecItemAdd((__bridge CFDictionaryRef)dictionary, NULL);
if (status == errSecSuccess) {
return YES;
}
return NO;
}
So, I really don't know Why i cant save the config..

I couldn't save it unless I called both
loadAllFromPreferencesWithCompletionHandler
loadFromPreferencesWithCompletionHandler
and only then
saveToPreferencesWithCompletionHandler

Related

Importing SimpleAuth ForSquareWeb - 9 build time errors

I'm relatively new to objective-c and hardly know much of swift.
I've been trying to make an app which will implement simpleAuth in order to create a link to the ForsquareWeb API.
I'm using cocoapods and have imported the SimpleAuth related files into my product.
Every file seems to be fine except the SimpleAuth target, specifically the SimpleAuthForSquareWebProvider.m file. This is what the file itself looks like;
//
// SimpleAuthFoursquareWebProvider.m
// SimpleAuth
//
// Created by Julien Seren-Rosso on 23/01/2014.
// Copyright (c) 2014 Byliner, Inc. All rights reserved.
//
#import "SimpleAuthFoursquareWebProvider.h"
#import "SimpleAuthFoursquareWebLoginViewController.h"
#import <ReactiveCocoa/ReactiveCocoa.h>
#import "UIViewController+SimpleAuthAdditions.h"
#implementation SimpleAuthFoursquareWebProvider
#pragma mark - SimpleAuthProvider
+ (NSString *)type {
return #"foursquare-web";
}
+ (NSDictionary *)defaultOptions {
// Default present block
SimpleAuthInterfaceHandler presentBlock = ^(UIViewController *controller) {
UINavigationController *navigation = [[UINavigationController alloc] initWithRootViewController:controller];
navigation.modalPresentationStyle = UIModalPresentationFormSheet;
UIViewController *presented = [UIViewController SimpleAuth_presentedViewController];
[presented presentViewController:navigation animated:YES completion:nil];
};
// Default dismiss block
SimpleAuthInterfaceHandler dismissBlock = ^(id controller) {
[controller dismissViewControllerAnimated:YES completion:nil];
};
NSMutableDictionary *options = [NSMutableDictionary dictionaryWithDictionary:[super defaultOptions]];
options[SimpleAuthPresentInterfaceBlockKey] = presentBlock;
options[SimpleAuthDismissInterfaceBlockKey] = dismissBlock;
return options;
}
- (void)authorizeWithCompletion:(SimpleAuthRequestHandler)completion {
[[[self accessToken]
flattenMap:^RACStream *(NSString *response) {
NSArray *signals = #[
[self accountWithAccessToken:response],
[RACSignal return:response]
];
return [self rac_liftSelector:#selector(dictionaryWithAccount:accessToken:) withSignalsFromArray:signals];
}]
subscribeNext:^(NSDictionary *response) {
completion(response, nil);
}
error:^(NSError *error) {
completion(nil, error);
}];
}
#pragma mark - Private
- (RACSignal *)accessToken {
return [RACSignal createSignal:^RACDisposable *(id<RACSubscriber> subscriber) {
dispatch_async(dispatch_get_main_queue(), ^{
SimpleAuthFoursquareWebLoginViewController *login = [[SimpleAuthFoursquareWebLoginViewController alloc] initWithOptions:self.options];
login.completion = ^(UIViewController *login, NSURL *URL, NSError *error) {
SimpleAuthInterfaceHandler dismissBlock = self.options[SimpleAuthDismissInterfaceBlockKey];
dismissBlock(login);
// Parse URL
NSString *fragment = [URL fragment];
NSDictionary *dictionary = [CMDQueryStringSerialization dictionaryWithQueryString:fragment];
NSString *token = dictionary[#"access_token"];
// Check for error
if (![token length]) {
[subscriber sendError:error];
return;
}
// Send completion
[subscriber sendNext:token];
[subscriber sendCompleted];
};
SimpleAuthInterfaceHandler block = self.options[SimpleAuthPresentInterfaceBlockKey];
block(login);
});
return nil;
}];
}
- (RACSignal *)accountWithAccessToken:(NSString *)accessToken {
return [RACSignal createSignal:^RACDisposable *(id<RACSubscriber> subscriber) {
NSDictionary *parameters = #{ #"oauth_token" : accessToken };
NSString *query = [CMDQueryStringSerialization queryStringWithDictionary:parameters];
NSString *URLString = [NSString stringWithFormat:#"https://api.foursquare.com/v2/users/self?v=20140210&%#", query];
NSURL *URL = [NSURL URLWithString:URLString];
NSURLRequest *request = [NSURLRequest requestWithURL:URL];
[NSURLConnection sendAsynchronousRequest:request queue:self.operationQueue
completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
NSIndexSet *indexSet = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange(200, 99)];
NSInteger statusCode = [(NSHTTPURLResponse *)response statusCode];
if ([indexSet containsIndex:statusCode] && data) {
NSError *parseError = nil;
NSDictionary *dictionary = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&parseError];
if (dictionary) {
[subscriber sendNext:dictionary];
[subscriber sendCompleted];
}
else {
[subscriber sendError:parseError];
}
}
else {
[subscriber sendError:connectionError];
}
}];
return nil;
}];
}
- (NSDictionary *)dictionaryWithAccount:(NSDictionary *)account accessToken:(NSString *)accessToken {
NSMutableDictionary *dictionary = [NSMutableDictionary new];
NSDictionary *userData = account[#"response"][#"user"];
// Provider
dictionary[#"provider"] = [[self class] type];
// Credentials
dictionary[#"credentials"] = #{
#"token" : accessToken
};
// User ID
dictionary[#"uid"] = userData[#"id"];
// Raw response
dictionary[#"extra"] = #{
#"raw_info" : userData
};
// User info
NSMutableDictionary *user = [NSMutableDictionary new];
if (userData[#"contact"][#"email"]) {
user[#"email"] = userData[#"contact"][#"email"];
}
if (userData[#"firstName"]) {
user[#"first_name"] = userData[#"firstName"];
}
if (userData[#"lastName"]) {
user[#"last_name"] = userData[#"lastName"];
}
user[#"name"] = [NSString stringWithFormat:#"%# %#", user[#"first_name"], user[#"last_name"]];
user[#"gender"] = userData[#"gender"];
if ([userData[#"photo"] isKindOfClass:NSDictionary.class]) {
user[#"image"] = [NSString stringWithFormat:#"%#500x500%#", userData[#"photo"][#"prefix"], userData[#"photo"][#"suffix"]];
} else if ([userData[#"photo"] isKindOfClass:NSString.class]) {
user[#"image"] = userData[#"photo"];
}
if (userData[#"photo"]) {
user[#"photo"] = userData[#"photo"];
}
if (userData[#"homeCity"]) {
NSString *homecity = [[userData[#"homeCity"] componentsSeparatedByString:#","] firstObject];
user[#"location"] = homecity;
}
user[#"urls"] = #{
#"Foursquare" : [NSString stringWithFormat:#"https://foursquare.com/user/%#", userData[#"id"]],
};
dictionary[#"info"] = user;
return dictionary;
}
#end
I think it would be easier to show you just a screen shot of the errors and where they're arising in the code itself;
I would really appreciate some insight into where the problem lies. I'm not sure why many of the errors say use of undeclared identifiers, are the imported files not correct?
After trying to re-install the pod file as it was suggested a class hadn't been installed I still have the same problem. Here are screen shots of my podfile and the terminals output when installing the pods;
I just used the Cocoapods application rather than terminal. I got additional information when clicking install.
"[!] The dPicDid [Debug] target overrides the ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES build setting defined in `Pods/Target Support Files/Pods-dPicDid/Pods-dPicDid.debug.xcconfig'. This can lead to problems with the CocoaPods installation
[!] The dPicDid [Release] target overrides the ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES build setting defined in Pods/Target Support Files/Pods-dPicDid/Pods-dPicDid.release.xcconfig'. This can lead to problems with the CocoaPods installation
- Use the$(inherited)flag, or
- Remove the build settings from the target.
- Use the$(inherited)` flag, or
- Remove the build settings from the target.

chatDidReceiveMessage method not called QuickBlox

I am using QuickBlox-iOS SDK for chatting. Login/Signup is working perfectly. Also I am able to send message but the delegate method
- (void)chatDidReceiveMessage:(QBChatMessage *)message;
is not getting called. Here's the code I am using to setup chat. Adding the following code in appDelegate :
// connect to Chat
[[QBChat instance] addDelegate:self];
QBUUser *currentUser = [QBUUser user];
currentUser.ID = [Global sharedInstance].currentUser.ID;
currentUser.password = #"password";
[[QBChat instance] connectWithUser:currentUser completion:^(NSError * _Nullable error) {
NSLog(#"connect to chat error %#",error);
}];
And the below code I am using to send message :
QBChatMessage *message = [QBChatMessage message];
message.recipientID=[Global sharedInstance].QBUserID;
message.senderID=[Global sharedInstance].currentUser.ID;
[message setText:messageTextView.text];
message.dateSent = [NSDate date];
NSMutableDictionary *params = [NSMutableDictionary dictionary];
params[#"save_to_history"] = #YES;
[message setCustomParameters:params];
[QBRequest createMessage:message successBlock:^(QBResponse *response, QBChatMessage *createdMessage) {
NSLog(#"success: %#", createdMessage);
} errorBlock:^(QBResponse *response) {
NSLog(#"ERROR: %#", response.error);
}]
I checked on QuickBlox dashboard. It shows all the sent/received messages. But the delegate is not getting called when I send message to another user. I am not using any additional services classes (QMServices) like they are using in their Example Project. Any help would be appreciated. Thanks
I don't understand why you're using the [QBRequest createMessage:successBlock:errorBlock:] method to send messages to another user.
For me what always worked was to create a chatDialog with the user you're trying to message, like so:
QBChatDialog *dialog = [[QBChatDialog alloc] initWithDialogID:nil
type: QBChatDialogTypePrivate];
dialog.occupantIDs = #[#([Global instance].QBUserID),
#([Global instance].currentUser.user.ID)];
Afterwards, you can call Quickblox method to create the dialog on the servers:
if (dialog.ID == nil) {
[QBRequest createDialog:dialog successBlock:^(QBResponse *response, QBChatDialog *createdDialog) {
[self sendMessageToDialog: dialog withText:#"Hello friend!"];
} errorBlock:^(QBResponse *response) {
NSLog(#"dialog creation err: %#", response);
}];
}
Create the message:
- (QBChatMessage *) createMessageWithText: (NSString *)text andDialog: (QBChatDialog*)dialog {
QBChatMessage *message = [QBChatMessage message];
message.text = text;
message.senderID = [Global instance].currentUser.ID;
message.markable = YES;
message.deliveredIDs = #[#([Global instance].currentUser.ID)];
message.readIDs = #[#([Global instance].currentUser.ID)];
message.dialogID = dialog.ID;
message.dateSent = [NSDate date];
message.recipientID = dialog.recipientID;
message.customParameters = [NSMutableDictionary dictionary];
message.customParameters[kQMCustomParameterDialogID] = dialog.ID;
message.customParameters[kQMCustomParameterDialogType] = [NSString stringWithFormat:#"%lu",(unsigned long)dialog.type];
message.customParameters[#"application_id"] = #"<your-application-id>";
message.customParameters[#"save_to_history"] = #"1";
if (dialog.lastMessageDate != nil){
NSNumber *lastMessageDate = #((NSUInteger)[dialog.lastMessageDate timeIntervalSince1970]);
message.customParameters[kQMCustomParameterDialogRoomLastMessageDate] = [lastMessageDate stringValue];
}
if (dialog.updatedAt != nil) {
NSNumber *updatedAt = #((NSUInteger)[dialog.updatedAt timeIntervalSince1970]);
message.customParameters[kQMCustomParameterDialogRoomUpdatedDate] = [updatedAt stringValue];
}
return message;
}
And then send the message to the dialog:
- (void) sendMessageToDialog: (QBChatDialog *)dialog withText: (NSString *)text {
QBChatMessage *message = [[ChatService shared] createMessageWithText:text andDialog:self.dialog];
[dialog sendMessage:message completionBlock:^(NSError * _Nullable error) {
if (error != nil) {
NSLog(#"error creating message %#", error);
} else {
NSLog(#"message sent!");
}
}];
}
I think following this flux you'll be able to receive the callback through the delegate.
EDIT - I forgot to mention the consts I used in the code above are:
NSString const *kQMCustomParameterDialogID = #"dialog_id";
NSString const *kQMCustomParameterDialogRoomName = #"room_name";
NSString const *kQMCustomParameterDialogRoomPhoto = #"room_photo";
NSString const *kQMCustomParameterDialogRoomLastMessageDate = #"room_last_message_date";
NSString const *kQMCustomParameterDialogUpdatedDate = #"dialog_updated_date";
NSString const *kQMCustomParameterDialogType = #"type";
NSString const *kQMCustomParameterDialogRoomUpdatedDate = #"room_updated_date";
Have you added <QBChatDelegate> into your .h file.

ios7 - cannot store credentials after authentication using AFOAuthCredential

I am authenticating against my mobile server using AFNetworking 2.0 + GROAuth2SessionManager ( which includes AFOAuthCredential) ( security framework is included ... )
on authentication success , the tokens are stored into the credentials :
- (void)authorizeUser:(NSString *)login password:(NSString *)password onSuccess:(void (^)())success onFailure:(void (^)(NSString *))failure {
NSURL *url = self.base_url;
GROAuth2SessionManager *sessionManager = [GROAuth2SessionManager managerWithBaseURL:url clientID:self.client_key secret:self.client_secret];
sessionManager.responseSerializer = [AFHTTPResponseSerializer serializer];
[sessionManager authenticateUsingOAuthWithPath:self.token_path
login:login
password:password
scope:nil
success:^(AFOAuthCredential *credential) {
[AFOAuthCredential storeCredential:credential
withIdentifier:[url host]];
self.creds = credential;
success();
}
failure:^(NSError *error) {
NSLog(#"OAuth client authorization error: %#", error);
NSDictionary *uinfo = [error userInfo];
NSHTTPURLResponse *response = [uinfo valueForKey:AFNetworkingOperationFailingURLResponseErrorKey];
NSInteger status = response.statusCode;
if (400 <= status && status < 500) {
[self resignAuthorization];
}
failure([uinfo valueForKey:NSLocalizedRecoverySuggestionErrorKey]);
}];
}
but I get an error in the console :
Unable to fetch credential with identifier "localhost" (Error -25300)
I look into the AFOAuthCredential, and I can see some blocks regarding security ..
Did I miss anything in my app setup to cope with it ? ...
#ifdef _SECURITY_SECITEM_H_
NSString * const kAFOAuth2CredentialServiceName = #"AFOAuthCredentialService";
static NSMutableDictionary * AFKeychainQueryDictionaryWithIdentifier(NSString *identifier) {
NSMutableDictionary *queryDictionary = [NSMutableDictionary dictionaryWithObjectsAndKeys:(__bridge id)kSecClassGenericPassword, kSecClass, kAFOAuth2CredentialServiceName, kSecAttrService, nil];
[queryDictionary setValue:identifier forKey:(__bridge id)kSecAttrAccount];
return queryDictionary;
}
#endif
...
#pragma mark Keychain
#ifdef _SECURITY_SECITEM_H_
+ (BOOL)storeCredential:(AFOAuthCredential *)credential withIdentifier:(NSString *)identifier {
return [self storeCredential:credential withIdentifier:identifier useICloud:NO];
}
+ (BOOL)storeCredential:(AFOAuthCredential *)credential withIdentifier:(NSString *)identifier useICloud:(BOOL)shouldUseICloud {
id securityAccessibility;
#if (defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 43000) || (defined(__MAC_OS_X_VERSION_MAX_ALLOWED) && __MAC_OS_X_VERSION_MAX_ALLOWED >= 1090)
securityAccessibility = (__bridge id)kSecAttrAccessibleWhenUnlocked;
#endif
return [self storeCredential:credential withIdentifier:identifier withAccessibility:securityAccessibility useICloud:shouldUseICloud];
}
+ (BOOL)storeCredential:(AFOAuthCredential *)credential
withIdentifier:(NSString *)identifier withAccessibility:(id)securityAccessibility useICloud:(BOOL)shouldUseICloud {
NSMutableDictionary *queryDictionary = AFKeychainQueryDictionaryWithIdentifier(identifier);
if (!credential) {
return [self deleteCredentialWithIdentifier:identifier useICloud:shouldUseICloud];
}
NSMutableDictionary *updateDictionary = [NSMutableDictionary dictionary];
NSData *data = [NSKeyedArchiver archivedDataWithRootObject:credential];
[updateDictionary setObject:data forKey:(__bridge id)kSecValueData];
if (securityAccessibility) {
[updateDictionary setObject:securityAccessibility forKey:(__bridge id)kSecAttrAccessible];
}
if (shouldUseICloud && &kSecAttrSynchronizable != NULL) {
[queryDictionary setObject:#YES forKey:(__bridge id)kSecAttrSynchronizable];
[updateDictionary setObject:#YES forKey:(__bridge id)kSecAttrSynchronizable];
}
OSStatus status;
BOOL exists = ([self retrieveCredentialWithIdentifier:identifier] != nil);
if (exists) {
status = SecItemUpdate((__bridge CFDictionaryRef)queryDictionary, (__bridge CFDictionaryRef)updateDictionary);
} else {
[queryDictionary addEntriesFromDictionary:updateDictionary];
status = SecItemAdd((__bridge CFDictionaryRef)queryDictionary, NULL);
}
if (status != errSecSuccess) {
NSLog(#"Unable to %# credential with identifier \"%#\" (Error %li)", exists ? #"update" : #"add", identifier, (long int)status);
}
return (status == errSecSuccess);
}
Sorry , after running the test once more time, I realise that it's running fine .... the first fetch doesn't hit the identifier ... then credentials are stored , and subsequent fetches hit the stored identifier .... my fault running on the simulator and reseting the content ....

Objective-C crash with zombie object

I've made an implementation for an JSON-RPC (a little bit modified) Server/Client in objective-c with the GCDAsyncSocket library. but the app crashes on responding to an request. without debugging for zombies i'm getting this error:
JSONRPCTestServer(1301,0x7fff7f887960) malloc: *** error for object 0x10014db10: pointer being freed was not allocated
*** set a breakpoint in malloc_error_break to debug
the screenshot in xcode shows the error is in the completeCurrentRead method of the GCDAsyncSocket library.
when debugging for zombies it logs this:
2013-02-04 14:36:16.430 JSONRPCTestServer[1367:603] *** -[__NSArrayI release]: message sent to deallocated instance 0x1005b6fd0
and instruments shows this:
as this happens when a response to the rpc-call is of type nsarray i'd guess its this array that is causing the error. the rpc-method is:
-(NSArray *)testArray:(GCDAsyncSocket *)sock {
return [NSArray arrayWithObjects:#"test1",#"test2", nil];
}
The JSON-RPC header is:
#import <Foundation/Foundation.h>
#import "JSONRPCMethod.h"
#import "JSONRPCResponse.h"
#import "JSONRPCError.h"
#import "JSONRPCArgument.h"
#import "JSONRPCRequest.h"
#import "GCDAsyncSocket.h"
#class GCDAsyncSocket;
#protocol JSONRPCResponseDelegate <NSObject>
#optional
-(void)rpcSocket:(GCDAsyncSocket*)sock returnedValue:(id)retVal forMethod:(NSString*)m id:(id)i;
-(void)rpcSocket:(GCDAsyncSocket*)sock returnedError:(JSONRPCError*)err forMethod:(NSString*)m id:(id)i;
-(void)rpcReturnedValue:(id)retVal forMethod:(NSString*)m id:(id)i;
-(void)rpcReturnedError:(JSONRPCError*)err forMethod:(NSString*)m id:(id)i;
#end
#interface JSONRPC : NSObject {
NSMutableArray *supportedMethods;
GCDAsyncSocket *mainSocket;
NSMutableArray *connectedSockets;
NSMutableArray *responseDelegates;
BOOL isServer;
}
+(JSONRPC*)sharedConnection;
-(BOOL)startServer:(NSUInteger)port;
-(BOOL)connectToServer:(NSString*)host port:(NSUInteger)port;
-(BOOL)addMethod:(JSONRPCMethod*)method;
-(void)removeMethod:(JSONRPCMethod*)method;
-(void)removeMethodsWithTarget:(id)target;
-(void)sendRequest:(JSONRPCRequest*)req toSocket:(GCDAsyncSocket*)sock;
-(void)sendRequest:(JSONRPCRequest*)req;
-(void)sendNotification:(JSONRPCRequest*)req toSocket:(GCDAsyncSocket*)sock;
-(void)sendNotification:(JSONRPCRequest*)req;
-(void)sendNotification:(JSONRPCRequest*)req toSocketsWithUserData:(id)userData;
#end
.m is:
#import "JSONRPC.h"
#import "GCDAsyncSocket.h"
#define kGeneralReadTimeout -1.0
#define kGeneralWriteTimeout -1.0
#implementation JSONRPC
- (id)init
{
self = [super init];
if (self) {
isServer = NO;
supportedMethods = [[NSMutableArray alloc] init];
mainSocket = [[GCDAsyncSocket alloc] initWithDelegate:self delegateQueue:dispatch_get_main_queue()];
connectedSockets = [[NSMutableArray alloc] init];
responseDelegates = [[NSMutableArray alloc] init];
}
return self;
}
+ (JSONRPC *)sharedConnection {
static JSONRPC *sharedSingleton;
#synchronized(self)
{
if (!sharedSingleton)
sharedSingleton = [[JSONRPC alloc] init];
return sharedSingleton;
}
}
-(BOOL)startServer:(NSUInteger)port {
// Now we tell the socket to accept incoming connections.
// We don't care what port it listens on, so we pass zero for the port number.
// This allows the operating system to automatically assign us an available port.
isServer = YES;
NSError *err = nil;
if ([mainSocket acceptOnPort:port error:&err]) {
} else {
DDLogError(#"Error while starting JSON-RPC Server: %#",err);
return NO;
}
DDLogInfo(#"Started JSON-RPC Server on port %hu",[mainSocket localPort]);
return YES;
}
-(BOOL)connectToServer:(NSString *)host port:(NSUInteger)port {
NSError *err = nil;
mainSocket = [[GCDAsyncSocket alloc] initWithDelegate:self delegateQueue:dispatch_get_main_queue()];
[mainSocket connectToHost:host onPort:port error:&err];
if(err != nil) {
DDLogError(#"Couldn't connect to host %#:%lu (Error: %#)",host,port,err);
return NO;
}
return YES;
}
-(BOOL)addMethod:(JSONRPCMethod *)method {
for (JSONRPCMethod *meth in supportedMethods) {
if([meth.name isEqualToString:method.name]) {
return NO;
}
}
[supportedMethods addObject:method];
return YES;
}
-(void)removeMethod:(JSONRPCMethod *)method {
[supportedMethods removeObject:method];
}
-(void)removeMethodsWithTarget:(id)target {
NSMutableArray *toRemove = [[NSMutableArray alloc] init];
for (JSONRPCMethod *meth in supportedMethods) {
if(meth.target == target) {
[toRemove addObject:meth];
}
}
[supportedMethods removeObjectsInArray:toRemove];
}
-(void)sendRequest:(JSONRPCRequest *)req toSocket:(GCDAsyncSocket*)sock {
[responseDelegates addObject:req];
[req setIdentifier:[NSNumber numberWithUnsignedInteger:[responseDelegates count]-1]];
[self sendPackage:[req dictionary] toSocket:sock];
}
-(void)sendRequest:(JSONRPCRequest *)req {
[self sendRequest:req toSocket:mainSocket];
}
-(void)sendNotification:(JSONRPCRequest *)req toSocket:(GCDAsyncSocket*)sock{
[req setIdentifier:nil];
[self sendPackage:[req dictionary] toSocket:sock];
}
-(void)sendNotification:(JSONRPCRequest *)req {
[self sendNotification:req toSocket:mainSocket];
}
-(void)sendNotification:(JSONRPCRequest *)req toSocketsWithUserData:(id)userData {
NSMutableArray *matchingSockets = [[NSMutableArray alloc] init];
for (GCDAsyncSocket*sock in connectedSockets) {
if(sock.userData == userData) {
[matchingSockets addObject:sock];
}
}
if(matchingSockets.count == 0)
return;
[req setIdentifier:nil];
NSData *pkgData = [self writableDataFromDictionary:[req dictionary]];
for (GCDAsyncSocket*sock in matchingSockets) {
[sock writeData:pkgData withTimeout:kGeneralWriteTimeout tag:0];
}
}
#pragma mark Socket Delegate
- (void)socket:(GCDAsyncSocket *)sock didAcceptNewSocket:(GCDAsyncSocket *)newSocket {
[connectedSockets addObject:newSocket];
[newSocket readDataToData:[GCDAsyncSocket ZeroData] withTimeout:kGeneralReadTimeout tag:0];
}
- (void)socket:(GCDAsyncSocket *)sock didConnectToHost:(NSString *)host port:(UInt16)port {
DDLogVerbose(#"socket:didConnectToHost:%# port:%hu", host, port);
[sock readDataToData:[GCDAsyncSocket ZeroData] withTimeout:kGeneralReadTimeout tag:0];
}
- (void)socketDidDisconnect:(GCDAsyncSocket *)sock withError:(NSError *)err {
DDLogVerbose(#"socketDidDisconnect:%#", err);
if(isServer)
[connectedSockets removeObject:sock];
}
-(void)socket:(GCDAsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag {
// So, we've received something from the client
// As we have to cut out the last 0x00 for JSONSerialization it has to be longer than 1 byte
if(data.length > 1) {
// Shorten out that 0x00
data = [data subdataWithRange:NSMakeRange(0, data.length-1)];
// Try to serialize
NSError *err;
NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:0 error:&err];
DDLogVerbose(#"Dict: %#",dict);
if(err != nil) {
// The package isn't json
JSONRPCResponse *response = [JSONRPCResponse responseWithError:[JSONRPCError invalidRequest]];
[self sendPackage:[response dictionary] toSocket:sock];
} else {
JSONRPCResponse *response = [self handleDictionary:dict fromSocket:sock];
if(response != nil) {
[self sendPackage:[response dictionary] toSocket:sock];
}
}
}
[sock readDataToData:[GCDAsyncSocket ZeroData] withTimeout:kGeneralReadTimeout tag:0];
}
-(JSONRPCResponse*)handleDictionary:(NSDictionary*)dict fromSocket:(GCDAsyncSocket*)sock {
// Check if the "id" is of a correct value/type
id identifier = [dict valueForKey:#"id"];
if(!(identifier == nil || [identifier isKindOfClass:[NSNumber class]])) {
return [JSONRPCResponse responseWithError:[JSONRPCError invalidRequest]];
}
// Handle the package
NSString *methodName = [dict valueForKey:#"method"];
id errorValue = [dict valueForKey:#"error"];
id resultValue = [dict valueForKey:#"result"];
if([methodName isKindOfClass:[NSString class]]) {
// We have a string as method
DDLogInfo(#"Method: %#, object: %#",methodName,[dict valueForKey:#"params"]);
for (JSONRPCMethod *method in supportedMethods) {
if([method.name isEqualToString:methodName]) {
id result = nil;
if(isServer == YES) {
// It is a server and the method needs to know from where the call comes
result = [method invoke:[dict valueForKey:#"params"] fromSocket:sock];
} else {
// It is a client and we don't need to know where the call is from. it can only be the server.
result = [method invoke:[dict valueForKey:#"params"]];
}
if([result isKindOfClass:[JSONRPCError class]]) {
return [JSONRPCResponse responseWithError:result id:identifier];
} else if(result != nil) {
return [JSONRPCResponse responseWithResult:result id:identifier];
} else {
return nil;
}
}
}
} else if(resultValue != nil) {
// We have a response from our partner
//DDLogInfo(#"Result: %#",resultValue);
NSUInteger responseDelegateId = [identifier unsignedIntegerValue];
if(responseDelegateId < [responseDelegates count]) {
JSONRPCRequest *originalRequest = [responseDelegates objectAtIndex:responseDelegateId];
if(originalRequest.sender == nil) {
return nil;
}
#try {
SEL selector;
if(isServer) {
selector = #selector(rpcSocket:returnedValue:forMethod:id:);
} else {
selector = #selector(rpcReturnedValue:forMethod:id:);
}
NSMethodSignature *signature = [originalRequest.sender methodSignatureForSelector:selector];
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:signature];
[invocation setTarget:originalRequest.sender];
[invocation setSelector:selector];
NSUInteger startArg = 2;
if(isServer) {
[invocation setArgument:&sock atIndex:startArg];
startArg++;
}
NSString *method = [originalRequest method];
id orgId = [originalRequest identifier];
[invocation setArgument:&resultValue atIndex:startArg];
[invocation setArgument:&method atIndex:startArg+1];
[invocation setArgument:&orgId atIndex:startArg+2];
[invocation invoke];
}
#catch (NSException *exception) {
DDLogWarn(#"Couldn't find a response: %#",exception);
}
}
} else if(errorValue != nil) {
// We have a string as method
DDLogInfo(#"Error: %#",errorValue);
} else {
return [JSONRPCResponse responseWithError:[JSONRPCError invalidRequest] id:identifier];
}
return nil;
}
-(void)sendPackage:(NSDictionary *)dict toSocket:(GCDAsyncSocket *)sock {
NSData *answerData = [self writableDataFromDictionary:dict];
[sock writeData:answerData withTimeout:kGeneralWriteTimeout tag:0];
}
-(NSData*)writableDataFromDictionary:(NSDictionary*)dict {
NSMutableData *answerData = [[NSMutableData alloc] init];
// Serialize the answer
NSError *err = nil;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dict options:0 error:&err];
if(err != nil) {
// Log
DDLogError(#"JSON-RPC had an internal error while converting the answer to JSON. The answer-dictionary is: %#",dict);
// Form answer manually
jsonData = [NSData dataWithBytes:"{\"error\":{\"code\":-32700,\"message\":\"Parse error\"}}"
length:49];
}
// Format the answer
[answerData appendData:jsonData];
[answerData appendData:[GCDAsyncSocket ZeroData]];
return answerData;
}
i just don't know how to fix this. why do i keep getting an error with an nsarray but when i return a nsnumber it works? how can i fix this?

Mac-to-bluetooth device file transfer, simple example?

I've spent two days googling and reading the Bluetooth programming guide while trying to piece together a small Mac app that will retrieve images from a drop folder and send any new files to a predetermined device over Bluetooth. There doesn't seem to be many good examples available.
I'm at the point where I'm able to spawn the Bluetooth Service Browser and select the device and its OBEX service, establishing a service and creating a connection, but then nothing more happens. Could anyone please point me in the direction of/show me a simple example that would work?
AppDelegate source code enclosed. Thanks for reading!
#import "AppDelegate.h"
#implementation AppDelegate
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
IOBluetoothServiceBrowserController *browser = [IOBluetoothServiceBrowserController serviceBrowserController:0];
[browser runModal];
//IOBluetoothSDPServiceRecord
IOBluetoothSDPServiceRecord *result = [[browser getResults] objectAtIndex:0];
[self describe:result];
if ([[result.device.name substringToIndex:8] isEqualToString:#"Polaroid"]) {
printer = result.device;
serviceRecord = result;
[self testPrint];
}
else {
NSLog(#"%# is not a valid device", result.device.name);
}
}
- (void) testPrint {
currentFilePath = #"/Users/oyvind/Desktop/_DSC8797.jpg";
[self sendFile:currentFilePath];
}
- (void) sendFile:(NSString *)filePath {
IOBluetoothOBEXSession *obexSession = [[IOBluetoothOBEXSession alloc] initWithSDPServiceRecord:serviceRecord];
if( obexSession != nil )
{
NSLog(#"OBEX Session Established");
OBEXFileTransferServices *fst = [OBEXFileTransferServices withOBEXSession:obexSession];
OBEXDelegate *obxd = [[OBEXDelegate alloc] init];
[obxd setFile:filePath];
[fst setDelegate:obxd];
OBEXError cnctResult = [fst connectToObjectPushService];
if( cnctResult != kIOReturnSuccess ) {
NSLog(#"Error creating connection");
return;
}
else {
NSLog(#"OBEX Session Created. Sending file: %#", filePath);
[fst sendFile:filePath];
[printer openConnection];
}
}
else {
NSLog(#"Error creating OBEX session");
NSLog(#"Error sending file");
}
}
#end
OK; here's what ultimately became the core parts of the functionality. The application I made was a sort of print server for Polaroid instant printers that would only accept images over Object Push.
First, ensure watched folder exists.
/*
Looks for a directory named PolaroidWatchFolder in the user's desktop directory
and creates it if it does not exist.
*/
- (void) ensureWatchedFolderExists {
NSFileManager *fileManager = [NSFileManager defaultManager];
NSURL *url = [NSURL URLWithString:#"PolaroidWatchFolder" relativeToURL:[[fileManager URLsForDirectory:NSDesktopDirectory inDomains:NSUserDomainMask] objectAtIndex:0]];
BOOL isDir;
if ([fileManager fileExistsAtPath:[url path] isDirectory:&isDir] && isDir) {
[self log:[NSString stringWithFormat:#"Watched folder exists at %#", [url absoluteURL]]];
watchFolderPath = url;
}
else {
NSError *theError = nil;
if (![fileManager createDirectoryAtURL:url withIntermediateDirectories:NO attributes:nil error:&theError]) {
[self log:[NSString stringWithFormat:#"Watched folder could not be created at %#", [url absoluteURL]]];
}
else {
watchFolderPath = url;
[self log:[NSString stringWithFormat:#"Watched folder created at %#", [url absoluteURL]]];
}
}
}
Then scan for available printers:
/*
Loops through all paired Bluetooth devices and retrieves OBEX Object Push service records
for each device who's name starts with "Polaroid".
*/
- (void) findPairedDevices {
NSArray *pairedDevices = [IOBluetoothDevice pairedDevices];
devicesTested = [NSMutableArray arrayWithCapacity:0];
for (IOBluetoothDevice *device in pairedDevices)
{
if ([self deviceQualifiesForAddOrRenew:device.name])
{
BluetoothPushDevice *pushDevice = [[BluetoothPushDevice new] initWithDevice:device];
if (pushDevice != nil)
{
[availableDevices addObject:pushDevice];
[pushDevice testConnection];
}
}
}
}
That last function call is to the BluetoothPushDevice's built-in method to test the connection. Here is the delegate handler for the response:
- (void) deviceStatusHandler: (NSNotification *)notification {
BluetoothPushDevice *device = [notification object];
NSString *status = [[notification userInfo] objectForKey:#"message"];
if ([devicesTested count] < [availableDevices count] && ![devicesTested containsObject:device.name]) {
[devicesTested addObject:device.name];
}
}
Upon server start, this method will run in response to a timer tick or manual scan:
- (void) checkWatchedFolder {
NSError *error = nil;
NSArray *properties = [NSArray arrayWithObjects: NSURLLocalizedNameKey, NSURLCreationDateKey, NSURLLocalizedTypeDescriptionKey, nil];
NSArray *files = [[NSFileManager defaultManager]
contentsOfDirectoryAtURL:watchFolderPath
includingPropertiesForKeys:properties
options:(NSDirectoryEnumerationSkipsHiddenFiles)
error:&error];
if (files == nil) {
[self log:#"Error reading watched folder"];
return;
}
if ([files count] > 0) {
int newFileCount = 0;
for (NSURL *url in files) {
if (![filesInTransit containsObject:[url path]]) {
NSLog(#"New file: %#", [url lastPathComponent]);
[self sendFile:[url path]];
newFileCount++;
}
}
}
}
When new files are found, ww first need to find a device that is not busy recieving a file of printing it:
/*
Loops through all discovered device service records and returns the a new OBEX session for
the first it finds that is not connected (meaning it is not currently in use, connections are
ad-hoc per print).
*/
- (BluetoothPushDevice*) getIdleDevice {
for (BluetoothPushDevice *device in availableDevices) {
if ([device.status isEqualToString:kBluetoothDeviceStatusReady]) {
return device;
}
}
return nil;
}
Then a file is sent with this method:
- (void) sendFile:(NSString *)filePath {
BluetoothPushDevice *device = [self getIdleDevice];
if( device != nil ) {
NSLog(#"%# is available", device.name);
if ([device sendFile:filePath]) {
[self log:[NSString stringWithFormat:#"Sending file: %#", filePath]];
[filesInTransit addObject:filePath];
}
else {
[self log:[NSString stringWithFormat:#"Error sending file: %#", filePath]];
}
}
else {
NSLog(#"No idle devices");
}
}
Upon transfer complete, this delegate method is called:
/*
Responds to BluetoothPushDevice's TransferComplete notification
*/
- (void) transferStatusHandler: (NSNotification *) notification {
NSString *status = [[notification userInfo] objectForKey:#"message"];
NSString *file = ((BluetoothPushDevice*)[notification object]).file;
if ([status isEqualToString:kBluetoothTransferStatusComplete]) {
if ([filesInTransit containsObject:file]) {
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error = nil;
[fileManager removeItemAtPath:file error:&error];
if (error != nil) {
[self log:[NSString stringWithFormat:#"**ERROR** File %# could not be deleted (%#)", file, error.description]];
}
[self log:[NSString stringWithFormat:#"File deleted: %#", file]];
[filesInTransit removeObject:file];
}
else {
[self log:[NSString stringWithFormat:#"**ERROR** filesInTransit array does not contain file %#", file]];
}
}
[self updateDeviceStatusDisplay];
}
I hope this helps someone!