Question

我们有一个iOS 9.2应用程序，在通过Xcode和本地Mac安装时运行良好。当我们通过MDM服务器安装此应用程序时，它会在第一次访问数据时崩溃。它正在退出，错误是“在10.00s之后无法进行场景更新。”

我在检查控制台输出时，似乎在requireLogin方法的成功过程之后挂起（在[self checkIntSession：self.sessionDetail]之后。

我们使用的是Novell的MDM而不是Apple版本。我创建了其他已安装并运行没有问题的应用程序。

我尝试过干净的构建和安装。它没有帮助。我在这里或其他地方找不到类似的问题。我不知道接下来要去哪里。任何帮助将不胜感激。

#import "Security.h"
#import "XMLTypeItem.h"
#import "ParseTypeXML.h"
#import "XMLPostSecurity.h"
#import "XMLSessionItem.h"
#import "FileSaving.h"
#import <LocalAuthentication/LocalAuthentication.h>

@implementation Security

- (NSString *)retrieveESN {

    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSArray *directoryPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectoryPath = [directoryPaths objectAtIndex:0];
    NSString *fullPath = [documentsDirectoryPath stringByAppendingString:@"/session.txt"];
    if ([fileManager fileExistsAtPath:fullPath]==YES) {
        _finished = false;
        [self readSession];
        NSString *result = [self checkSession:_sessionDetail];
        if ([result isEqualToString:@"Error"]) {
            NSString *userESN = [self newFile];


            if (self.getUserESN){
                self.getUserESN(userESN);
            }

            return userESN;
        } else {
            return result;
        }
    } else {
        _finished = false;
        NSString *userESN = [self newFile];
        return userESN;
    }
}

- (NSString *)newFile {
    [self requireLogin];

    if (self.findUserESN) {
        self.findUserESN(_passESN);
    }

    return _passESN;
}


- (void)requestSession {
    NSString *idfv = [[[UIDevice currentDevice] identifierForVendor] UUIDString];
    NSString *url = @"https://company.com/loginfile";

    NSMutableString *postText = [[NSMutableString alloc] init];

    [postText appendString:idfv];

    NSString *postBody = [NSString stringWithString:postText];

    XMLPostSecurity *postAction = [[XMLPostSecurity alloc] init];
    _sessionDetail = [postAction sendPostRequestToUrl:url withBody:postBody];

    FileSaving *saver = [[FileSaving alloc] init];

    [saver saveSession:self.sessionDetail];
}

-(NSString *)readSession {
    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSArray *directoryPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectoryPath = [directoryPaths objectAtIndex:0];
    NSString *fullPath = [documentsDirectoryPath stringByAppendingString:@"/session.txt"];

    if (self.fileExistsNow) {
        self.fileExistsNow([fileManager fileExistsAtPath:fullPath]);
    }

    NSFileManager *fileManagerTwo;
    NSData *dataBuffer;
    fileManagerTwo = [NSFileManager defaultManager];
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *filePath = [documentsDirectory stringByAppendingString:@"/session.txt"];

    dataBuffer = [fileManagerTwo contentsAtPath:filePath];
    _sessionDetail = [[NSString alloc] initWithData:dataBuffer encoding:(NSASCIIStringEncoding)];

    return _sessionDetail;
}

-(void)readIntSession {
    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSArray *directoryPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectoryPath = [directoryPaths objectAtIndex:0];
    NSString *fullPath = [documentsDirectoryPath stringByAppendingString:@"/session.txt"];

    if (self.fileExistsNow) {
        self.fileExistsNow([fileManager fileExistsAtPath:fullPath]);
    }

    NSFileManager *fileManagerTwo;
    NSData *dataBuffer;
    fileManagerTwo = [NSFileManager defaultManager];
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *filePath = [documentsDirectory stringByAppendingString:@"/session.txt"];

    dataBuffer = [fileManagerTwo contentsAtPath:filePath];
    _sessionDetail = [[NSString alloc] initWithData:dataBuffer encoding:(NSASCIIStringEncoding)];
}

-(NSString *)checkSession:(NSString *)sessionFound {
    NSDictionary *cookieProperties = [NSDictionary dictionaryWithObjectsAndKeys:
                                      @"ollie/", NSHTTPCookieDomain,
                                      @"\\", NSHTTPCookiePath,
                                      @"Cookie", NSHTTPCookieName,
                                      sessionFound, NSHTTPCookieValue,
                                      nil];
    NSHTTPCookie *cookie = [NSHTTPCookie cookieWithProperties:cookieProperties];
    NSArray *cookieArray = [NSArray arrayWithObject:cookie];
    NSDictionary *headers = [NSHTTPCookie requestHeaderFieldsWithCookies:cookieArray];

    NSMutableString *url = [[NSMutableString alloc] initWithString:@"https://company.com/file.php"];

    NSURL *urlNew = [NSURL URLWithString:url];
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:urlNew];
    [request setHTTPMethod:@"GET"];
    [request setAllHTTPHeaderFields:headers];

    NSURLSession *session = [NSURLSession sharedSession];
    NSURLSessionDataTask *task = [session dataTaskWithRequest:request
                                            completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {

                                                if (error) {
                                                    return;
                                                }

                                                if ([response isKindOfClass:[NSHTTPURLResponse class]]) {
                                                    NSInteger statusCode = [(NSHTTPURLResponse *)response statusCode];

                                                    if (statusCode != 200) {

                                                        if (statusCode == 401) {
                                                            // Insert process for thumbprint and session cookie pull

                                                            NSFileManager *fileManagerThree = [NSFileManager defaultManager];
                                                            NSString *documentsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
                                                            NSString *sessionPath = [documentsPath stringByAppendingPathComponent:@"session.txt"];
                                                            NSError *error;
                                                            BOOL success = [fileManagerThree removeItemAtPath:sessionPath error:&error];
                                                            if (success) {
                                                            } else {
                                                            }
                                                        } else {
                                                            return;
                                                        }
                                                    }
                                                }
                                                self.parseData = data;
                                            }];
    [task resume];

    if (self.parseDataAvailable) {
        self.parseDataAvailable(self.parseData);
    }

    ParseTypeXML *myParser = [[ParseTypeXML alloc] initWithData:self.parseData];
    if ([myParser.esn count] == 0) {
        return @"Error";
    } else {
        return myParser.esn[0];
    }
}

-(void)checkIntSession:(NSString *)sessionFound {
    NSDictionary *cookieProperties = [NSDictionary dictionaryWithObjectsAndKeys:
                                      @"ollie/", NSHTTPCookieDomain,
                                      @"\\", NSHTTPCookiePath,
                                      @"Cookie", NSHTTPCookieName,
                                      sessionFound, NSHTTPCookieValue,
                                      nil];
    NSHTTPCookie *cookie = [NSHTTPCookie cookieWithProperties:cookieProperties];
    NSArray *cookieArray = [NSArray arrayWithObject:cookie];
    NSDictionary *headers = [NSHTTPCookie requestHeaderFieldsWithCookies:cookieArray];

    NSMutableString *url = [[NSMutableString alloc] initWithString:@"https://company.com/file.php"];

    NSURL *urlNew = [NSURL URLWithString:url];
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:urlNew];
    [request setHTTPMethod:@"GET"];
    [request setAllHTTPHeaderFields:headers];

    NSURLSession *session = [NSURLSession sharedSession];
    NSURLSessionDataTask *task = [session dataTaskWithRequest:request
                                            completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {

                                                if (error) {
                                                    return;
                                                }

                                                if ([response isKindOfClass:[NSHTTPURLResponse class]]) {
                                                    NSInteger statusCode = [(NSHTTPURLResponse *)response statusCode];

                                                    if (statusCode != 200) {

                                                        if (statusCode == 401) {
                                                            // Insert process for thumbprint and session cookie pull

                                                            NSFileManager *fileManagerThree = [NSFileManager defaultManager];
                                                            NSString *documentsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
                                                            NSString *sessionPath = [documentsPath stringByAppendingPathComponent:@"session.txt"];
                                                            NSError *error;
                                                            BOOL success = [fileManagerThree removeItemAtPath:sessionPath error:&error];
                                                            if (success) {
                                                            } else {
                                                            }
                                                        } else {
                                                            return;
                                                        }
                                                    }
                                                }
                                                self.parseData = data;
                                            }];
    [task resume];

    if ( self.parseDataAvailable) {
        self.parseDataAvailable(self.parseData);
    }

    ParseTypeXML *myParser = [[ParseTypeXML alloc] initWithData:self.parseData];
    if ([myParser.esn count] == 0) {
        _passESN = @"Error";
    } else {
        _passESN = myParser.esn[0];
    }
}

- (void)requireLogin {

    LAContext *context = [[LAContext alloc] init];
    NSError *error = nil;

    if ([context canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:&error]) {
        // Authenticate User
        [context evaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics
                localizedReason:@"You must log in to the app."
                          reply:^(BOOL success, NSError * _Nullable error) {

                              if (success) {
                                  self.finished = true;
                                  if (self.touchIDWorks){
                                      self.touchIDWorks(self.finished);
                                  }
                                  [self requestSession];
                                  [self readIntSession];
                                  [self checkIntSession:self.sessionDetail];
                              } else {
                                  switch (error.code) {
                                      case LAErrorAuthenticationFailed:
                                          break;
                                      case LAErrorUserCancel:
                                          break;
                                      case LAErrorUserFallback:
                                          break;

                                      default:
                                          break;
                                  }
                              }
                          }];
    } else {
    }
}

- (void)dataIsThere:(void (^)(NSData *foundData))finishBlock {
    self.parseDataAvailable = finishBlock;
}

- (void)thumbOK:(void (^)(BOOL success))finishBlock {
    self.touchIDWorks = finishBlock;
}

- (void)esnIsHere:(void (^)(NSString *newESN))finishBlock {
    self.getUserESN = finishBlock;
}

- (void)esnIsReady:(void (^)(NSString *))finishBlock {
    self.findUserESN = finishBlock;
}

- (void)fileReady:(void (^)(BOOL))finishBlock {
    self.fileExistsNow = finishBlock;
}

从ViewController.m调用它：

- (IBAction)getESN:(id)sender {
    Security *pulledESN = [[Security alloc] init];
    self.gottenESN = [pulledESN retrieveESN];
    self.responseLabel.text = self.gottenESN;
}

===稍后添加===

放入完成块并没有解决问题。完成requireLogin成功部分后，代码似乎仍然挂起。就像我需要回报一样。

Answer 1

这条线对我来说太可怕了：

  while ( self.parseData == NULL );

这可能是调试与发布版本问题。我可以想象一个发布版本优化self.parseData的读取，以便不检查其他线程是否已更新它。

我建议您以其他方式执行此操作 - 在这样的循环中进行轮询时，CPU会在等待时将CPU固定为100％。我建议把它写成与数据准备就绪时调用的完成块异步。

从MDM安装后，企业应用程序崩溃

1 个答案: