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  • K-12 and Cloud considerations

    - by user736511
    Much like every other Public Sector organization, school districts in the US and Canada are under tremendous pressure to deliver consistent and modern services while operating with reduced budgets, IT personnel shortages, and staff attrition.  Electronic/remote learning and the need for immediate access to resources such as grades, calendars, curricula etc. are straining IT environments that were already burdened with meeting privacy requirements imposed by both regulators and parents/students.  One area viewed as a solution to at least some of the challenges is the use of "Cloud" in education.  Although the concept of "Cloud" is nothing new in education with many providers supplying educational material over the web, school districts defer previously-in-house-hosted services to established commercial vendors to accommodate document sharing, app hosting, and even e-mail.  Doing so, however, does not reduce an important risk, that of privacy.  As always, Cloud implementations are viewed in a skeptical manner because of the perceived reduction in sensitive data management and protection thereof, although with a careful approach and the right tooling, the benefits realized by Clouds can expand to security and privacy.   Oracle's comprehensive approach to data privacy and identity management ensures that the necessary tools are available to support regulations, operational efficiencies and strong security regardless of where the sensitive data is stored - on premise or a Cloud.  Common management tools, role-based access controls, access policy management and engineered systems provided by Oracle can be the foundational pieces on which school districts can build their Cloud implementations without having to worry about security itself. Their biggest challenge, and it is a positive one, is how to best take advantage of Oracle's DB Security and IDM functionality to reduce operational costs while enabling modern applications and data delivery to those who needs access to it. For more information please refer to http://www.oracle.com/us/products/middleware/identity-management/overview/index.html and http://www.oracle.com/us/products/database/security/overview/index.html.

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  • Exchange 2010 Deployment Notes - ISA 2004 Server Issue

    - by BWCA
    An interesting ISA 2004 tidbit … While we were setting up our Exchange 2010 ActiveSync environment, we encountered a problem where we could not successfully telnet over port 443 from one of our ISA 2004 Servers to our Exchange 2010 Client Access Server Array. When we tried to telnet over port 443 from the ISA Server to the Client Access Server Array name, we would get a “Could not open connection to the host on port 443: Connect failed” error message. Also, when we used portqry over port 443 from the ISA Server to the Client Access Server Array name, we would get a “Error opening socket: 10065” and “No route to host” error messages. It was odd because we did not have any problems with using ping or tracert from the ISA Server to the Client Access Server Array and our firewall firewall policy was allowing 443 traffic to pass through. After some troubleshooting, we were able to telnet and use portqry over port 443 successfully if we stopped the Microsoft Firewall service on the ISA 2004 Server.  So, it was strictly a problem with ISA.  Eventually, we were able to isolate the problem to a ISA 2004 Server System Policy setting as shown below (to modify the System Policy, right-click Firewall Policy and click Edit System Policy). Under the Diagnostics Services – HTTP Connectivity verifiers Configuration Group, you need to enable the configuration group under the General tab to resolve the problem.  After we enabled the setting, we no longer had a problem.

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  • Oracle Solaris Remote Lab (OSRL) Fact Sheet

    - by user13333379
    The Oracle Solaris Remote Lab allows independent software vendors (ISVs) to test and qualify their applications in a self service Solaris cloud. ISVs who are Oracle Partner Network Gold members with a specialization in the Solaris knowledge zone can apply for free access in OPN. The lab offers the following features to it's users: Lifetime of project: 45 days (extensions granted on demand)  Up to 5 virtual machines in a private network  Virtual Machine technology: Solaris zones  Resources per VM processor support: SPARC or x86  OS version: OracleSolaris 11.0 4GB physical memory  4GB swap space  10GB local filesystem storage  10GB network filesystem (NFS) mounted on all virtual machines Networking configuration The only external network routes are to Partner's other Virtual Machines  No network routing to the Internet  The SMB (CIFS) sharing protocol is not available between Virtual Machines  Device Access  Applications that assume the existence of /devices will not run in a Virtual Machine  Applications that use eeprom to modify SPARC eeprom setting will not run in a Virtual Machine The following utilities do not work properly in Virtual Machines:  add_drv, disks, prtconf, prtdiag, rem_dev Access technology: Secure Global Desktop, file up and download root access within VM Available VM templates (both processor architectures) Oracle Database 11g Release 2 (11.2.0.3) for Solaris with Oracle Enterprise Manager 11g Weblogic 12c  SAMP: Apache http server, PHP, MySQL, phpadmin on all templates and images: Oracle Solaris Studio 12.3 for application development  More resources: Online application for Oracle Solaris remote Lab Developer Webinar about the Oracle Solaris Remote Lab Everything an Oracle Solaris Developer needs...

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  • Oracle Solaris Remote Lab (OSRL) Fact Sheet

    - by user13333379
    The Oracle Solaris Remote Lab allows independent software vendors (ISVs) to test and qualify their applications in a self service Solaris cloud. ISVs who are Oracle Partner Network Gold members with a specialization in the Solaris knowledge zone can apply for free access in OPN. The lab offers the following features to it's users: Lifetime of project: 45 days (extensions granted on demand)  Up to 5 virtual machines in a private network  Virtual Machine technology: Solaris zones  Resources per VM processor support: SPARC or x86  OS version: OracleSolaris 11.0 4GB physical memory  4GB swap space  10GB local filesystem storage  10GB network filesystem (NFS) mounted on all virtual machines Networking configuration The only external network routes are to Partner's other Virtual Machines  No network routing to the Internet  The SMB (CIFS) sharing protocol is not available between Virtual Machines  Device Access  Applications that assume the existence of /devices will not run in a Virtual Machine  Applications that use eeprom to modify SPARC eeprom setting will not run in a Virtual Machine The following utilities do not work properly in Virtual Machines:  add_drv, disks, prtconf, prtdiag, rem_dev Access technology: Secure Global Desktop, file up and download root access within VM Available VM templates (both processor architectures) Oracle Database 11g Release 2 (11.2.0.3) for Solaris with Oracle Enterprise Manager 11g Weblogic 12c  SAMP: Apache http server, PHP, MySQL, phpadmin on all templates and images: Oracle Solaris Studio 12.3 for application development  More resources: Online application for Oracle Solaris remote Lab Developer Webinar about the Oracle Solaris Remote Lab Everything an Oracle Solaris Developer needs...

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  • How to present a stable data model in a public API that allows internal data structures to be changed without breaking the public view of the data?

    - by Max Palmer
    I am in the process of developing an application that allows users to write C# scripts. These scripts allow users to call selected methods and to access and manipulate data in a document. This works well, however, in the development version, scripts access the document's (internal) data structures directly. This means that if we were to change the internal data model/structure, there is a good chance that someone's script will no longer compile. We obviously want to prevent this breaking change from happening, but still want to allow the user to write sensible C# code (whilst not restricting how we develop our internal data model as a result). We therefore need to decouple our scripting API and its data structures from our internal methods and data structures. We've a few ideas as to how we might allow the user to access a what is effectively a stable public version of the document's internal data*, but I wanted to throw the question out there to someone who might have some real experience of this problem. NB our internal document's data structure is quite complex and it could be quite difficult to wrap. We know we want to expose as little as possible in our public API, especially as once it's out there, it's out there for good. Can anyone help? How do scripting languages / APIs decouple their public API and data structures from their internal data structures? Is there no real alternative to having to write a complex interaction layer? If we need to do this, what's a good approach or pattern for wrapping complex data structures that include nested objects, including collections? I've looked at the API facade pattern, which looks like it's trying to address these kinds of issues, but are there alternatives? *One idea is to build a data facade that is kept stable across versions of our application. The facade exposes a set of facade data objects that are used in the script code. These maintain backwards compatibility and wrap access to our internal document's data model.

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  • Database Vault integration available

    - by Anthony Shorten
    One of the major features of Oracle Utilities Application Framework V4.1 is the provision of a base solution for integration to the Database Vault product. Database Vault is part of Oracle’s security portfolio of product and allows database user permissions to be locked down to only allow appropriate users appropriate access to the product data. By default, when you install the product database, administrators and SYSDBA users have full DML (SELECT, INSERT, UPDATE and DELETE access) to the schemas they own and in the case of the SYSDBA users, all schemas on the database. This can be perceived as an issue. Database Vault allows an additional layer of security to disable inappropriate access. In Oracle Utilities Application Framework, a prebuilt Database Vault solution has been provided to provide base DML access to product data for product users only. The solution is shipped with the database installation files and includes a set of SQL files to create, disable, enable and delete the Database Vault objects. The solution contains a Database Vault Realm, RuleSets, Rules and Command Rules that can be used as is or extended to meet site specific needs. The solution is consistent with other Database Vault solutions provided for other Oracle applications such as PeopleSoft, E-Business Suite, JD-Edwards and Siebel. Customers familiar with the database vault solutions for those products will recognize the similarities between the solutions. For more details of the solution, refer to the Database Vault Integration for Oracle Utilities Application Framework Based Products on My Oracle Support at KB Id: 1290700.1.

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  • iOS and Server: OAuth strategy

    - by drekka
    I'm trying to working how to handle authentication when I have iOS clients accessing a Node.js server and want to use services such as Google, Facebook etc to provide basic authentication for my application. My current idea of a typical flow is this: User taps a Facebook/Google button which triggers the OAuth(2) dialogs and authenticates the user on the device. At this point the device has the users access token. This token is saved so that the next time the user uses the app it can be retrieved. The access token is transmitted to my Node.js server which stores it, and tags it as un-verified. The server verifies the token by making a call to Facebook/google for the users email address. If this works the token is flagged as verified and the server knows it has a verified user. If Facebook/google fail to authenticate the token, the server tells iOS client to re-authenticate and present a new token. The iOS client can now access api calls on my Node.js server passing the token each time. As long as the token matches the stored and verified token, the server accepts the call. Obviously the tokens have time limits. I suspect it's possible, but highly unlikely that someone could sniff an access token and attempt to use it within it's lifespan, but other than that I'm hoping this is a reasonably secure method for verification of users on iOS clients without having to roll my own security. Any opinions and advice welcome.

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  • "System.Data.OracleClient requires Oracle client software version 8.1.7 or greater." Error Message

    - by Jandost Khoso
    Quick resolution: Give full permission to AUTHENTICATED USERS in following folders. a) ORACLE_HOME b) Program Files\ORACLE   Check your PATH. You might have installed different clients in your system and your .NET application is pointing to a home with inappoperiate client. What your .NET application should load is OCI.DLL with File version more than 8.1.7. According to the MSDN document Oracle and ADO.NET:   "The .NET Framework Data Provider for Oracle provides access to an Oracle database using the Oracle Call Interface (OCI) as provided by Oracle Client software. The functionality of the data provider is designed to be similar to that of the .NET Framework data providers for SQL Server, OLE DB, and ODBC. "     The MSDN document System Requirements (Oracle) says: "The .NET Framework Data Provider for Oracle requires Microsoft Data Access Components (MDAC) version 2.6 or later. MDAC 2.8 SP1 is recommended. You must also have Oracle 8i Release 3 (8.1.7) Client or later installed. "   Both the .NET Framework Data Provider for Oracle and Oracle Data Provider for .NET are data providers to access Oracle database. The former ships with .NET Framework and requires Oracle client version 8.1.7 or above. The latter is provided by Oracle company and requires Oracle client version 9.2 or later.     The Oracle Data Provider for .NET (ODP.NET) features optimized ADO.NET data access to the Oracle database. ODP.NET allows developers to take advantage of advanced Oracle database functionality, including Real Application Clusters, XML DB, and advanced security.   See the document Comparing the Microsoft .NET Framework 1.1 Data Provider for Oracle and the Oracle Data Provider for .NET for more information about the difference.

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  • Struggles to connect to network when using WPA with a BCM43225

    - by pst007x
    When booting my laptop, it will try to connect to my wireless network, however a window keeps popping up asking me for my security password, which has already been saved. I have to keep deleting my network settings, and reconnecting, otherwise it keeps failing to connect. My wireless is set up with a WPA, I do not want to lower my security because of this, but it is a pain and can take me 15mins plus to finally connect. The problem has only become apparent since a fresh install of 11.10. IPV6 disabled. System info: 01:00.0 Ethernet controller: Broadcom Corporation NetLink BCM57780 Gigabit Ethernet PCIe (rev 01) Subsystem: Acer Incorporated [ALI] Device 036d Flags: bus master, fast devsel, latency 0, IRQ 43 Memory at b3400000 (64-bit, non-prefetchable) [size=64K] Capabilities: <access denied> Kernel driver in use: tg3 Kernel modules: tg3 02:00.0 Network controller: Broadcom Corporation BCM43225 802.11b/g/n (rev 01) Subsystem: Broadcom Corporation Device 04da Flags: bus master, fast devsel, latency 0, IRQ 17 Memory at b2400000 (64-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: brcmsmac Kernel modules: wl, brcmsmac ADDITIONAL: In terminal I get this: pst007x@pst007x-ubuntu64:~$ nm-applet start ** Message: applet now removed from the notification area ** (nm-applet:2816): DEBUG: old state indicates that this was not a disconnect 0 ** Message: using fallback from indicator to GtkStatusIcon ** Message: applet now embedded in the notification area ** Message: No keyring secrets found for Auto Access 01/802-11-wireless-security; asking user. ** (nm-applet:2816): DEBUG: foo_client_state_changed_cb Note this line: ** Message: No keyring secrets found for Auto Access 01/802-11-wireless-security; asking user. At this point is where I am asked for the password. Please report WPA issues with Ubuntu 11.10 here: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/892727

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  • both IPV4 and IPV6 at the same time over DSL connection?

    - by namiheike
    Let me describe my situation: while I connect computer with the wire, I've got an IPV6 address automatically, there's a "Wired connection" tab in network manager, and I can access an website that support IPV6 (google,facebook,twitter...)with a hosts file, or use the proxy like google.com.sixxs.org But if I want to access the whole internet, I have to create a DSL connection with username and password that ISP gave me. BUT after I change my connection into this DSL connection, I cannot access website over IPV6, even there's the site's ipv6 address in /etc/hosts, then I realize that I lose my IPV6 connection, because the ping6 says connect: Network is unreachable. the problem is, there's no IPV6 tab or options about IPV6 in the configure of DSL connection. It feels like I can only use one connection at the same time, but the DSL doesn't support IPV6 and the wired connection doesn't support IPV4(I mean, there's no way to input the password the ISP gave me) maybe make somebody uncomfortable, but when I work in MS windows, there's no such problem, (maybe just feel like) I can access V4 and V6 at the same time. So how to solve with this? thanks a lot. I'm in 11.10 + gnome3

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  • Managing arbitrary user permissions under PureFTPd

    - by Sebastián Grignoli
    I need to provide an FTP service that needs to be web-managed in the simplest way possible. My customer wants to create folders and users, and give them read only or read/write access arbitrarily. For example: The folder 'Documents' should be read only for several users, writable for internal users, and invisible for the rest. The folder 'Pictures' should be read only for journalists, writable for associates, and invisible for the rest. The folder 'Media' should be read only, writable or invisible for arbitrary users specified on the admin. There could be a large number of users and folders. I can't find a good way to accomplish that. I thought that I could give each user a home folder and put symlinks for the folders he has read access to, and make the user part of the folder's group when he has write access too, but now I think that this wouldn't work, because with PureFTPd (or ProFTPd) I can only specify the virtual user's mapping to a system user, and only one GUID for each virtual user. My approach requires that I could specify several GUIDs for each user (one by each folder he has write access to). I need to start programming this admin and I still don't know wich approach would work, if any. ¿Any ideas?

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  • MVC + 3 tier; where ViewModels come into play?

    - by mikhairu
    I'm designing a 3-tiered application using ASP.NET MVC 4. I used the following resources as a reference. CodeProject: MVC + N-tier + Entity Framework Separating data access in ASP.NET MVC I have the following desingn so far. Presentation Layer (PL) (main MVC project, where M of MVC was moved to Data Access Layer): MyProjectName.Main Views/ Controllers/ ... Business Logic Layer (BLL): MyProjectName.BLL ViewModels/ ProjectServices/ ... Data Access Layer (DAL): MyProjectName.DAL Models/ Repositories.EF/ Repositories.Dapper/ ... Now, PL references BLL and BLL references DAL. This way lower layer does not depend on the one above it. In this design PL invokes a service of the BLL. PL can pass a View Model to BLL and BLL can pass a View Model back to PL. Also, BLL invokes DAL layer and DAL layer can return a Model back to BLL. BLL can in turn build a View Model and return it to PL. Up to now this pattern was working for me. However, I've ran into a problem where some of my ViewModels require joins on several entities. In the plain MVC approach, in the controller I used a LINQ query to do joins and then select new MyViewModel(){ ... }. But now, in the DAL I do not have access to where ViewModels are defined (in the BLL). This means I cannot do joins in DAL and return it to BLL. It seems I have to do separate queries in DAL (instead of joins in one query) and BLL would then use the result of these to build a ViewModel. This is very inconvenient, but I don't think I should be exposing DAL to ViewModels. Any ideas how I can solve this dilemma? Thanks.

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  • Feature Updates to the Windows Azure Portal

    - by Clint Edmonson
    Lots of activity over at the Windows Azure portal this weekend, including some exciting new features and major improvements to existing features. Here are the highlights: Support for Managing Co-administrators Set up account co-administrators to allow others to share service management duties for each Azure subscription Import/Export support for SQL Databases Export existing SQL Azure databases to blob storage using SQL Server 2012’s BACPAC format. Create a new SQL Azure database from an existing BACPAC stored in blob storage Storage Container Management and Access Control Create blob storage containers directly within the portal Edit their public/private access settings Drill into storage containers and see the blobs contained within them Improved Cloud Service Status Notifications Detailed health status information about cloud services and roles as they transition between states Virtual Machine Experience Enhancements Option to automatically delete corresponding VHD files from blob storage when deleting VM disks Service Bus Management and Monitoring Ability to create and manage service bus Namespaces, Queues, Topics, Relays and Subscriptions Rich monitoring of Topics, Queues, and Subscriptions with detailed and customizable dashboard metrics Entity status (Topic, Queue, or Subscription) can be changed interactively via dashboard Direct links to the Access Control Services (ACS) namespaces when working with service bus access keys Media Services Monitoring Support Monitor encoding jobs that are queued for processing as well as active, failed and queued tasks for encoding jobs The above features are all now live in production and available to use immediately.  If you don’t already have a Windows Azure account, you can sign-up for a free trial and start using them today. Stay tuned to my twitter feed for Windows Azure announcements, updates, and links: @clinted Reference ID: P7VVJCM38V8R

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  • How to integrate a PHP CMS with paypal so that only users who completed a payment can register and authenticate?

    - by ibiza
    I am currently using a PHP CMS - cmsmadesimple - in order to create a website where services will be sold. I intend to use Paypal 'Buy Now' buttons in order to offer a few packages that will be renewable every 1-month or every 3-months and that grant access to the secure content of the website for a given period of time. Everything is going well so far but I am somewhat at loss for the user registration process as I have a few constraints I would like to use and it would be nice to automate the process if possible. Here are the constraints : User should be able to register to my website and choose a password himself Only users that paid should be able to register Access permissions should be disabled automatically after the service period if the package is not renewed And here is the process which I am thinking of : User clicks 'buy' on my website User is redirected on Paypal and completes the payment The paypal email used to pay should be returned to my server and somehow stored If it is a new email, user needs to register to my website (else if it is a returning customer, the deactivation flag for payment stopped should be removed to give back access) If a user does not renew his subscription, there should be a deactivation flag automatically set to the email used in order to lock access until next payment. Ideally, no human intervention is needed. What is the best way to implement all this? I am a bit at loss. I found this article that explained a few things and even has a nice code snippet, except that I'm not sure where to plug it. Thanks all

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  • How to have Windows 7 remember a password for a Domain

    - by Kelly Jones
    About eighteen months ago, I wrote a post covering how to clear saved passwords in Windows XP.  This week at work I was reminded how useful it is to not only deleted saved passwords, but to also setup wildcard credentials using this same interface. The scenario that I run into as consultant working at a client site, is that my laptop is not a member of the Windows Domain that my client uses to secure their network. So, when I need to access file shares, shared printers, or even the clients internal websites, I’m prompted for a name and password.  By creating a wildcard entry on my laptop (for the user account that the client issued to me), I avoid this prompt and can seamlessly access these resources.  (This also works when you’ve configured Outlook to access Exchange via RPC over HTTP.) How to create a credential wild card entry in Windows 7: Go to your Start Menu --> Type "user" into the Search box Click on the “Manage your credentials” in the column on the left Click on the “Add a Windows credential” link Enter the Domain (in my case my client’s domain), something like this: *.contoso.com Enter the username and password That’s it.  You should now be able to access resources in that Domain without being prompted for your name and password.  Please note: if you are required to change your password periodically for that domain, you’ll need to update your saved password as well.

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  • Move SQL Server transaction log to another disk

    - by Jim Lahman
    When restoring a database backup, by default, SQL Server places the database files in the master database file directory.  In this example, that location is in L:\MSSQL10.CHTL\MSSQL\DATA as shown by the issuance of sp_helpfile   Hence, the restored files for the database CHTL_L2_DB are in the same directory     Per SQL Server best practices, the log file should be on its own disk drive so that the database and log file can operate in a sequential manner and perform optimally. The steps to move the log file is as follows: Record the location of the database files and the transaction log files Note the future destination of the transaction log file Get exclusive access to the database Detach from the database Move the log file to the new location Attach to the database Verify new location of transaction log Record the location of the database file To view the current location of the database files, use the system stored procedure, sp_helpfile 1: use chtl_l2_db 2: go 3:   4: sp_helpfile 5: go   Note the future destination of the transaction log file The future destination of the transaction log file will be located in K:\MSSQLLog   Get exclusive access to the database To get exclusive access to the database, alter the database access to single_user.  If users are still connected to the database, remove them by using with rollback immediate option.  Note:  If you had a pane connected to the database when the it is placed into single_user mode, then you will be presented with a reconnection dialog box. 1: alter database chtl_l2_db 2: set single_user with rollback immediate 3: go Detach from the database   Now detach from the database so that we can use windows explorer to move the transaction log file 1: use master 2: go 3:   4: sp_detach_db 'chtl_l2_db' 5: go   After copying the transaction log file re-attach to the database 1: use master 2: go 3:   4: sp_attach_db 'chtl_l2_db', 5: 'L:\MSSQL10.CHTL\MSSQL\DATA\CHTL_L2_DB.MDF', 6: 'K:\MSSQLLog\CHTL_L2_DB_4.LDF', 7: 'L:\MSSQL10.CHTL\MSSQL\DATA\CHTL_L2_DB_1.NDF', 8: 'L:\MSSQL10.CHTL\MSSQL\DATA\CHTL_L2_DB_2.NDF', 9: 'L:\MSSQL10.CHTL\MSSQL\DATA\CHTL_L2_DB_3.NDF' 10: GO

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  • CSOM (Client Side Object Model) - What's new with SharePoint 2013

    - by KunaalKapoor
    SharePoint CSOMThe Client-Side Object Model or CSOM came out with SharePoint 2010. CSOM is accessible through client.svc but all client.svc calls must go through supported WFC entry points (supported entry points are .NET, Silverlight and JavaScript). So a developer would need to use client side proxy objects exposed by either a .NET assembly or a JavaScript library. Changes with SharePoint 2013REST Capabilities - Direct access to client.svcNew APIs - App ModelREST CapabilitiesOne of the most important changes to the CSOM with SharePoint 2013 is that the web service entry point of client.svc has been extended to allow direct access  via REST-Based web service calls. This is a really critical change since its going to make the SharePoint platform accessible to any other platform, opening the horizons of integration and collaboration with other REST based platforms and devices. OData (a really popular standard data access API for HTTP-based clients) is supported similar to 2010 but will be a more important aspect of SharePoint 2013 development.New API'sCSOM for SharePoint 2013 has been buffed up with several new APIs for not only SharePoint server functionality but also an API for Windows Phone applications. For a SharePoint 2010 farm most of the new APIs mentioned below are available only via server side APIs:SearchTaxonomyPublishingWorkflowUser ProfilesE-DiscoveryAnalyticsBusiness DataIRMFeedsSharePoint 2013 remote APIs being accessible through both CSOM and REST is very important to the new app model where developers can no longer run code in a SharePoint environment nor can they access the server-side APIs. So CSOM plays the savior here.Also, you can now substitute the alias '_api' in order to reference '_vti_bin/client.svc'.

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  • Design help with parallel process

    - by brazc0re
    I am re-factoring some code and an having an issue with retrieving data from two parallel processes. I have an application that sends packets back and forth via different mediums (ex: RS232, TCP/IP, etc). The jist if of this question is that there are two parallel processes going on. I hope the picture below displays what is going on better than I can word it: SetupRS232() class creates a new instance of the SerialPort by: SerialPort serialPort = new SerialPort(); My question is, what is the best way that the Communicator() class, which sends out the packet via the respective medium, get access to the SerialPort object from the SetupRS232 class? I can do it with a Singleton but have heard that they are generally not the best design to go by. I am trying to follow SRP but I do feel like I am doing something wrong here. Communicator() will need to go out of it's way to get access to SetupRS232() to get access to the SerialPort class. I actually haven't found a way to even get access to it. Would designing each medium class, for example, SetupRS232(), SetupTCPIP, as a singleton be the best way to approach this problem?

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  • How to prevent Network Manager from auto creating network connection profiles with "available to everyone" by default

    - by airtonix
    We have several laptops at work which use Ubuntu 11.10 64bit. I have our Wifi Access Point requiring WPA2-EAP Authentication (backed by a LDAP server). I have the staff using these laptops when doing presentations by using the Guest Account. So by default when you have a wifi card, network manager will display available Wireless Access Points. So the logical course of action for a Novice(tm) user is to single left click the easy to use option in the Network Manager drop down list... At this point the Staff Member (who is logged in with the guest account) expects to just be able to connect and enter any authentication details if required. But because they are using the Guest account, they won't ever have admin permissions (nor do I want them to), and so PolKit kicks in with a request for admin authorisation. I solved this part by modifying the PolKit permissions required to allow all users to create System Network Connections... However, because these Staff members are logging onto the Wifi Access Point with Ldap Credentials and because the Network Manager is now saving those credentials as a System Connection, their password is available for the next guest user session (because system connection profiles are stored in /etc/NetworkManager/system-connections.d/* ). It creates system connections by default because "Available to all users" is ticked by default when you quickly connect to a new wifi access point. I want Network Manager to not tick this by default. This way I can revert the changes I made to Polkit and users network connection profiles will be purged when they log out.

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  • Prepare For Oracle Certification Exams With Confidence

    - by Brandye Barrington
    Empower yourself to put your best foot forward on exam day! Oracle Certification Exam Candidates, test with confidence using preparation tools created by Oracle and Oracle's only Authorized Practice Test Provider, Kaplan SelfTest. Oracle wants to help protect your investment of time and money by offering tools to help you be as prepared as possible for your certification exam as well as your future job role. Use these valuable tools to get the most out of your exam preparation: Online Exam Preparation Seminars, Online Practice Tests and the new free Online Demos from Kaplan SelfTest. FREE ONLINE DEMOS Choose from 1Z0-851 Java 6 Programmer Certified Professional or 1Z0-047 Oracle Database SQL Expert. Get a feel for the type and difficulty of questions on the Oracle Certification exams and determine if you are ready for the exam or if you need more preparation. This is a powerful tool that will help you plan your preparation and make the most of your investment. Access Free Online Demos Now ONLINE EXAM PREPARATION SEMINARS These one-day self-paced streaming video seminars are 100% focused on exam preparation. The streaming video format lets you fast forward, rewind, and replay at your own pace so that you can identify and close any knowledge gaps before taking the exam. The Exam Prep Seminar structures your studying - so you don't have to. Access Online Exam Preparation Seminars ONLINE PRACTICE TESTS Test your knowledge with Kaplan SelfTest Practice Exams. These practice tests are one of the most effective ways to prepare for your Oracle Certification exam by helping you self-assess your knowledge using realistic exam simulations. You can purchase practice exams from Oracle with 30-day or 12-month access. Access Online Practice Tests Approach exam day with confidence using the tools above.

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  • Mobile (Client) to Amazon S3 (Server) - Architecture

    - by wasabii
    let's start off with the problem statement: My iOS application has a login form. When the user logs in, a call is made to my API and access granted or denied. If access was granted, I want the user to be able to upload pictures to his account and/or manage them. As storage I've picked Amazon S3, and I figured it'd be a good idea to have one bucket called "myappphotos" for instance, which contains lots of folders. The folder names are hashes of a user's email and a secret key. So, every user has his own, unique folder in my Amazon S3 bucket. Since I've just recently started working with AWS, here's my question: What are the best practices for setting up a system like this? I want the user to be able to upload pictures directly to Amazon S3, but of course I cannot hard-code the access key. So I need my API to somehow talk to Amazon and request an access token of sorts - only for the particular folder that belongs to the user I'm making the request for. Can anyone help me out and/or guide me to some sources where a similar problem was addressed? Don't think I'm the first one and the amazon documentation is so extensive that I don't really know where to start looking. Thanks a lot!

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  • Oauth for Google API example using Python / Django

    - by DrDee
    Hi, I am trying to get Oauth working with the Google API using Python. I have tried different oauth libraries such as oauth, oauth2 and djanog-oauth but I cannot get it to work (including the provided examples). For debugging Oauth I use Google's Oauth Playground and I have studied the API and the Oauth documentation With some libraries I am struggling with getting a right signature, with other libraries I am struggling with converting the request token to an authorized token. What would really help me if someone can show me a working example for the Google API using one of the above-mentioned libraries. EDIT: My initial question did not lead to any answers so I have added my code. There are two possible causes of this code not working: 1) Google does not authorize my request token, but not quite sure how to detect this 2) THe signature for the access token is invalid but then I would like to know which oauth parameters Google is expecting as I am able to generate a proper signature in the first phase. This is written using oauth2.py and for Django hence the HttpResponseRedirect. REQUEST_TOKEN_URL = 'https://www.google.com/accounts/OAuthGetRequestToken' AUTHORIZATION_URL = 'https://www.google.com/accounts/OAuthAuthorizeToken' ACCESS_TOKEN_URL = 'https://www.google.com/accounts/OAuthGetAccessToken' CALLBACK = 'http://localhost:8000/mappr/mappr/oauth/' #will become real server when deployed OAUTH_CONSUMER_KEY = 'anonymous' OAUTH_CONSUMER_SECRET = 'anonymous' signature_method = oauth.SignatureMethod_HMAC_SHA1() consumer = oauth.Consumer(key=OAUTH_CONSUMER_KEY, secret=OAUTH_CONSUMER_SECRET) client = oauth.Client(consumer) request_token = oauth.Token('','') #hackish way to be able to access the token in different functions, I know this is bad, but I just want it to get working in the first place :) def authorize(request): if request.GET == {}: tokens = OAuthGetRequestToken() return HttpResponseRedirect(AUTHORIZATION_URL + '?' + tokens) elif request.GET['oauth_verifier'] != '': oauth_token = request.GET['oauth_token'] oauth_verifier = request.GET['oauth_verifier'] OAuthAuthorizeToken(oauth_token) OAuthGetAccessToken(oauth_token, oauth_verifier) #I need to add a Django return object but I am still debugging other phases. def OAuthGetRequestToken(): print '*** OUTPUT OAuthGetRequestToken ***' params = { 'oauth_consumer_key': OAUTH_CONSUMER_KEY, 'oauth_nonce': oauth.generate_nonce(), 'oauth_signature_method': 'HMAC-SHA1', 'oauth_timestamp': int(time.time()), #The timestamp should be expressed in number of seconds after January 1, 1970 00:00:00 GMT. 'scope': 'https://www.google.com/analytics/feeds/', 'oauth_callback': CALLBACK, 'oauth_version': '1.0' } # Sign the request. req = oauth.Request(method="GET", url=REQUEST_TOKEN_URL, parameters=params) req.sign_request(signature_method, consumer, None) tokens =client.request(req.to_url())[1] params = ConvertURLParamstoDictionary(tokens) request_token.key = params['oauth_token'] request_token.secret = params['oauth_token_secret'] return tokens def OAuthAuthorizeToken(oauth_token): print '*** OUTPUT OAuthAuthorizeToken ***' params ={ 'oauth_token' :oauth_token, 'hd': 'default' } req = oauth.Request(method="GET", url=AUTHORIZATION_URL, parameters=params) req.sign_request(signature_method, consumer, request_token) response =client.request(req.to_url()) print response #for debugging purposes def OAuthGetAccessToken(oauth_token, oauth_verifier): print '*** OUTPUT OAuthGetAccessToken ***' params = { 'oauth_consumer_key': OAUTH_CONSUMER_KEY, 'oauth_token': oauth_token, 'oauth_verifier': oauth_verifier, 'oauth_token_secret': request_token.secret, 'oauth_signature_method': 'HMAC-SHA1', 'oauth_timestamp': int(time.time()), 'oauth_nonce': oauth.generate_nonce(), 'oauth_version': '1.0', } req = oauth.Request(method="GET", url=ACCESS_TOKEN_URL, parameters=params) req.sign_request(signature_method, consumer, request_token) response =client.request(req.to_url()) print response return req def ConvertURLParamstoDictionary(tokens): params = {} tokens = tokens.split('&') for token in tokens: token = token.split('=') params[token[0]] = token[1] return params

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  • Facebook require_login not working

    - by kielie
    hi guys, I am having some trouble with my little facebook application, I keep getting this friggin error, "Fatal error: Call to undefined method Facebook::require_login()", now the funny bit is that my exact same code is working for other people, but not for me, here is the code. <?php require_once( "facebook-php-sdk/src/facebook.php" ); $api_key = "my_api_key"; $secret = "my_secret_key"; $facebook = new Facebook( $api_key, $secret ); $user_id = $facebook->require_login(); echo "Hello World"; echo "Current logged in as <fb:name uid=\"$user_id\" />"; ?> As you can see it is a simple hello USER application, but for some reason this REFUSES to work for me, so if anyone can help out that would be great, thanx in advance!

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  • additional security measures besides a login with user-password - what can you think of?

    - by Tom Tom
    I'm wondering which additional security measures one could take besides a traditional login with user and password. What do you think of this one: _manually adding a cookie to each client which includes a secret key _this cookie is not served by the webserver, it is actually copied "by hand" to each client computer _if a client connects to the web-app the server graps that cookie and if the containing secret key is ok, the traditional login box is presented where the user has to enter the user-password combination _communication between client and server is encrypted with https Thus a potential intruder would first need to get the cookie from the clients computer, which is only possible with having access to the clients computer. This would work only for a very small user-base and an admin willing to do this manual work.

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  • Detecting first time login of user into application (Google Appengine)

    - by Jake
    My app requires users to login using their google account. I have this set in my App.yamp file: url: /user/.* script: user.py login: required Now when any user tries to access files under /user/secret.py he will need to authenticate via google, which will redirect the user back to /user/secret.py after successful authentication. Now the problem I am facing is when the user is redirected back to the app, I cannot be sure if this is the first time the user has logged in or is it a regular user to my site who has come back again from just the user object which google passes using users.get_current_user() . I thus need to maintain state in the datastore to check if the user already exists or not everytime. If he does not exist i need to create a new entry with other application specific settings. My question is: Is there some easier way to handle this? without having to query the datastore to figure if this is a first time user or a regular one?

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