CATEGORY: Web Development

How to Copy and Paste into the Digital Ocean VNC Console

I recently signed up for Digital Ocean to test droplets for my development and linux management testing. I was securing the server and setup fail2ban, disabled the root login, and created a user account but forgot to change the user name from root to the user name I selected in my SSH client profile. I ended up locking myself out of the server and had to resort to logging into the admin panel on Digital Ocean’s website and use their browser embedded VNC client to restore my access. I quickly discovered that one of the downsides of using this panel is that you can’t copy and paste commands. Luckily there’s a workaround and you can use the browser console to do sendkeys through Javascript.

Bring up the console in the browser developer tools. Here’s a cheat sheet for keyboard shortcuts:

BrowserDescriptionWindowsMac
ChromeOpen Developer Tools and bring focus to the consoleCtrl + Shift + JCmd + Opt + J
FirefoxOpen ConsoleCtrl + Shift + KCmd + Opt + K
Internet ExplorerAfter hitting F12, you have to click the console tab.
There’s no direct shortcut to the console tab.
F12N/A

Paste this snippet into the textbox in the console window:

Chrome console

 

Update 9-21-16

Ruden and Sebastiaan’s pointed out there was a bug in the code above. This updated snippet has support for characters when using shift characters like !@#$%^&*()_+

You’ll receive a dialog prompt to enter the copy to paste in. Please note that you need to click on the VNC console and hit enter to execute the command.

Javascript Prompt

 

 

 

 

 

If you need to enter more than one command, just hit the up arrow on your keyboard in the console to get the script again for easy reuse.

Sitecore 8 Install Error: “The name you entered is not unique.”

Stecore Installer Error - The name you entered is not unique.I was working on my business partner’s computer to help him fix errors with his Sitecore instance for his certification class. He experienced multiple issues with the Sitecore 8 installer on Windows 8 and we went the manual route of deleting Sitecore to install clean and start from scratch. In the process, we:

  • Deleted the IIS website instance in the IIS Manager
  • Deleted the databases used by the instance
  • Deleted the root folder in the filesystem

After launching the installer again, it kept returning the error “The name you entered is not unique.” when naming the Sitecore instance to one previously used. After checking the IIS metabase and a few other typical locations, couldn’t figure out where the Sitecore installer was finding the name since we deleted everything manually. It turns out that the Sitecore executable installer creates a registry entry under HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Sitecore CMS which is used to display information in Windows Programs and Features. This registry key is also checked during the installation process and if a child key with the same name as the one being installed is found, the above error message is shown.

To fix this:

  1. Start -> Run (or Windows Key + R)
  2. Type regedit
  3. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Sitecore CMS.
  4. Delete the registry keys containing the information about the previously installed instance.

NOTE: You’ll need to relaunch the installer as it apparently caches the key information.

 

ASP.NET MVC Model Generator

In making the switch to ASP.NET MVC, I’ve moved away from using my old Data Access Layer that I’ve used for years and have opted to use Dapper as my ORM of choice in the quest for optimal performance. My DAL was actually pretty optimized for WinForms and WebForms (using straight SQL Queries and SQL parameters) but mapping it to models wasn’t something I had in mind when I created it. I’m finding Dapper takes some getting used too but it is still pretty fast. The downside is that writing the code for Models to wire it up is proving to be a little tedious.

To that effect, I wrote a little application that has helped me generate the models from a database dynamically. It’s in it’s infancy stages and something I cobbled together in less than 8 hours but it works. I’ll add more features too as time goes on if there’s enough interest or to satisfy my own needs. In the meantime, I’m open sourcing the project as it may help others and I’d love to see it become something grander if others are willing to contribute to it. There’s also some useful bits of code that others may find useful to reference like dynamically reading fields from a database, pluralization/singularization of words, amongst others.

You can find the repository on Github: https://github.com/gregvarghese/MVCModelGenerator

How to Get Browser Name and Version via JavaScript

Today I ran into a strange issue where Firefox version 28 and below rendered style widths different than Firefox 29 and above. Firefox 29 and above appear to have fixed the issue and render sizes to match Chrome/IE8+/Opera/Safari. Unfortunately, as old as Firefox 28 is, our client’s legal review team is stuck on that version as IT refuses to let them upgrade. As such, we needed to add a kludge fix to the site to add a style to fix the issue for those running older Firefox versions. JQuery removed the version support from version 1.9 so here’s a handy script that will allow you to detect the browser and version without any extra dependencies.

Usage is very simple:

BONUS: If you need to detect a specific version and add special classes, here’s a quick snippet that will allow you to add a class to the HTML tag  using plain old vanilla.js.

 

Safari Prompts Authorization for Video in Password Protected Folders

Safari Sucks - Use a Real BrowserUsing Safari 6 and trying to password protect a site with videos? You might run into issue where Safari prompts you for a password. Unexpectedly, you’ll find that you’re unable to interact with the fields to re-authenticate or even move the box to get it out-of-the-way.

If you run into this issue, check your folder structure. If your videos are in a password protected folder and inherit from the parent like below, you’ll have to move the video files out of the password protected folder to get the videos to play.

Main
Password Protected Folder
——Videos

Your new folder structure will need to be similar to something like:

Main
Password Protected Folder
—Videos

Once you do that, your videos should play with no issues. I’ve already reported the issue to Apple when I first encountered the issue but there’s been no fix to date.

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