jScripts - jQuery and Google prettyPrint

Saturday, July 18, 2015

Code Readability = "Art"

The following quote by Bill Atkinson has been posed many ways by other clever folks and continues to resonate with me ... it's comforting that someone more cultured than i will ever be, considers this "art"... i naturally lean towards loving the code like one would take care with a fine wood piece, which does follow to the idea of a craftsman or artisan.

... I’m a firm believer that the best way to prevent bugs is to make it so that you can read through the code and understand exactly what it’s doing ...
--Bill Atkinson

It's pleasing this ties back to the computer era I came up in, the mid 80's, when i was first imprinted with the wide eyed sense of wonder that software offers... when these OG's were right there building the first versions of the contemporary user interface... sure things have been refined immensely but not really much has changed since then... i would say robust "touch" is a fairly big change since then and of course there will be new breakthroughs

Sunday, June 28, 2015

Minimal pure CSS Treeview with FontAwesome expanders

Update 2015-07-18: shux! not valid to apply ::before/after psuedo elements to <input> since it's not technically content (stack-o reference)
Works in Chrome and Safari but not Firefox or IE :(

Look ma, no JavaScript! :)

Leveraging (hidden) checkbox element to maintain expand/collapse state and
:before {content: "xyz" }
 css to avoid extra elements.
Not an original idea but wanted to see of i could trim down all the extra html markup & css required.
Turned out swell! The <input> is the only additional overhead above standard markup, sahweet!

Sunday, June 14, 2015

External Content in Blogger Post

Highlights:
  • pull content from 3rd party source, using crossorigin.me (CORS proxy) to avoid "no 'access-control-allow-origin' header is present on the requested resource"
  • from what i can glean, Blogger does not offer any kind of server side include facility so we have to resort to client browser tricks and that means this content is NOT going to be crawled/googlable
  • this approach relies on jQuery (Core) so you'll need to have that referenced as well - example here, but also make sure you point at the latest version

Usage:
drop this helper function in a global JS/HTML widget via the Blogger Layout editor...
function pluginContent(url, containerSelector, boolPrettyPrint) {
function pluginContent(url, containerSelector, boolPrettyPrint) {
  var ctrl = $(containerSelector);
  $.get("http://crossorigin.me/"+url)
    .done(function (result) {
        ctrl.html(result);

        //force prettyPrint rendering after loading dynamic content
        // google on: "google code prettify" to get dialed in on this code syntax highlighting library
        // => https://code.google.com/p/google-code-prettify/wiki/GettingStarted
        if (boolPrettyPrint) {
          ctrl.removeClass("prettyprinted");
          PR.prettyPrint();
        }
    })
    .fail(function() {
      ctrl.html('failed to retrieve external content.<\br>'+
        'try going there directly: <a href="'+url+'">'+url+'</a>')
    });
}

Then use it like this in an individual blogpost:
<pre class="prettyprint linenums lang-powershell" id="prePoshDualExplorers"></pre>

<script>
  //pull code content from codeplex
  pluginContent("https://beejpowershell.svn.codeplex.com/svn/PoshDualExplorers/PoshDualExplorers.ps1", "#prePoshDualExplorers", true);
</script>

PowerShell Dual Windows Explorers

Highlights:
  • Nutshell: Hosting two Windows File Explorers inside a WinForm... with the potential of sprinkling some utility hotkeys on top - e.g. "copy from left to right".
  • latest powershell source code
  • Always wanted to try this and just finally got around to it... and it actually works to a decent degree.
  • This is obviously well covered ground with various other file managers... i just wanted to see if you could do it this poor man's way with PowerShell driving... so one could take it and make it one's own, w/o having to get into big C# compile fest... it's all relative of course
  • The obnoxious part is hunting down the COM interfaces necessary to pull stuff out of FileExplorer... it dips into silliness like how IE is somehow part of the equation.
  • See comments for all the good posts i drew from to cobble it together... lots of handy Shell programming nuggets to be had
  • oh yeah, thanks to a handy github project, Font-Awesome is now in the WinForms domain - too cool
  • notes to self
    • interop.SHDocVw.dll is generated from doing a Visual Studio reference to C:\windows\system32\shdocvmw.dll
    • interop.Shell32.dll seemed like it was going to come in handy but didn't wind up being necessary
    • these are the only real FileExplorer API calls necessary for the CopyFile piece
      • $objFolder = $objShell.NameSpace($explorerRight_SHDocVw.LocationUrl)
      • $objFolder.CopyHere($explorerLeft_SHDocVw.Document.SelectedItems())
    • there are a few wacky interfaces behind the shell objects but the neat thing is that runtime dynamic type binding makes using real types largely irrelevant... i feel that does lose some self documentation in the balance so i've tried to include the pertinent interfaces in the comments for future reference and expansion
Source Code

Sunday, April 5, 2015

Yosemite Hackintosh VMware Fusion 7 Bootcamp

Current Versions:

  • Yosemite v10.10.2
  • VMware Fusion Pro v7.1
  • Tuxera NTFS v2014

Notes:

  •  Paragon v12 for Yosemite wasn't recognizing the NTFS volumes, so switched to Tuxera and it seemed to work better
  • Seemed like unmounting the recovery partition on my main Windows drive kept Fusion from trying to pull that in as the Bootcamp drive
  • Fusion took a very long time to process my main Windows boot drive... probably over a half hour with no progress status the whole time... apparently we  just have to be very patient

Saturday, April 4, 2015

Installing Yosemite on native hardware via VMware


General guide for installing physical boot OS X from a Windows VMware hosted guest instance - Including some specifics for Yosemite, the Clover boot loader and my hardware.

Apologies, the nested outline below utilizes a pure CSS expand collapse approach that only works under Chrome / Safari).

The "MBR Magic Hide Trick" is the sneakiest part ... I'm very grateful those guys came up with any workaround because otherwise not able to write to the physical drive is a show stopper :) Tying a VM to a physical disk like a peppy SSD just seems like such a natural thing to do it's kinda amazing VMware hasn't gotten slammed into addressing this issue over the years of upgrades.

This guide is pretty packed with comments so it looks long but it's a lot like painting a house, the "work" is all in the preparation, the actual install steps are quite simple.

Motivation:

  • I tend to shuffle things around enough that I don't always have a working hackinstosh available. My MacBook pro is circa 2007 and stops at OS X 10.7.5, which doesn't run all the latest tools. Therefore the ready-to-run VMware Yosemite images out there are a convenient bootstrapping approach.
  • I had trouble getting my USB stick to boot with Clover – which appears to be a known issue on my mobo (Gigabyte X99-UD4) – so on the way to prepping a USB for UniBeast, I figured why not see how tough it is to install directly from the VMWare guest to my intended physical drive and skip the USB process.
    • This approach turned out nicely... I assume it's not promoted more often over the  USB thumb drive route due to the overhead of obtaining and configuring the VM bits ... i find troubleshooting from the full Yosemite VM environment a nice advantage over the limited run time options available under a OS X Installation / Recovery boot.

Hardware as of this guide:

  • Mobo: Gigabyte GA-X99-UD4 - LGA 2011-v3
    • bios: F12
    • onboard ethernet: Intel I218-V (kext required)
    • onboard audio: Realtek ALC1150 (vanilla support)
  • CPU: Intel i7-5820k - 6 core Haswell-E (vanilla via Clover flags)
  • Video: Asus Strix Nvidia GeForce GTX 750Ti 2GB ... this card is a perfect fit in my book:
    • No drivers necessary to vanilla boot into Yosemite - no QE/CI out of box but very workable for initial install and then full QE/CI via Nvidia "webdriver".
    • fanless unless pushed hard
    • 3 x digital display, INCLUDING DP - I can confirm this card supports at least dual monitors under Yosemite via any combination of DP / HDMI / DVI (dual- link) with any of them driving 2560 x 1600 res... I've seen mention of possible 4k support on this card and can't wait to confirm that myself :)
    • no more horsepower than I care to pay for => $160 at the time ... and was well stocked in major outlets circa April 2015

Obtain Software Bits:

Software versions only listed for reference as of this build, not crucial unless noted.
  1. VMware Workstation (v11.1)
  2. Yosemite VMWare image (v10.10 14A389) - this package includes crucial patches enabling OS X guests
    1. My app store Yosemite install turned out to be v10.10.*2* (14C109) even though the vmware image was running original v10.10.0
    2. OS X version can be confirmed by hitting the "Startup Disk" button at the end of the installer.
  3. Yosemite via App Store download - get this download fired up as soon as you can get into the VM since it's big and takes a while
  4. Clover Configurator (v4.23.0) - very very handy, seals the deal on Clover convenience
    1. while UniBeast still seems to cover more diverse hardware situations, Clover is pretty slick if your hardware is copacetic (basically starting with a UEFI capable mobo)
    2. the "EFI partition only" footprint is nice for vanilla segregation - it sits there intact if you want to completely wipe & reinstall OS X primary partition 
    3. Couple nice bits for my hardware
      1. HaswellE kernel patch is a checkbox vs manually patching the kernel - nice!
      2. no fuss NVRAM checkbox which effortlessly enables iMessage and App Store connectivity
  5. Clover (v2.3k r3241, change descriptions) - during install steps, you can use Cover Configurator to conveniently download and launch Clover installer
  6. KextWizard (v3.7.11) - one handy feature above other more well known kext loaders, it will target another drive which is perfect for this side-load scenario
  7. Kexts
    1. FakeSMC - bare minimum DSMOS avoidance for non apple hardware
    2. AppleIntelE1000e (v3.1.0) - for X99-UD4's onboard Intel I218-V ethernet
    3. VoodooTSCSync patched for 6 core (my hardware) - author site says this addresses "spin lock" issue
  8. Nvidia's web driver
    1. *** Updating Nvidia web driver *** - black screen issue
      1. add nv_disable=1 boot flag (nvda_drv=0 seems to be equivalent)
      2. boot up, hopefully video now works albeit in low res mode
      3. install new drivers
      4. remove nv_disable=1 
      5. reboot, hopefully happy now
    2. 750ti guide

BIOS settings:

  1. SATA controller in AHCI mode
  2. xHCI = manual, xHCI handoff = disabled - (Reference) i think this is a USB3 compatibility thing

VMware Guest Configs:

  1. add 'smc.version = 0' to the VMX file in order to resolve error: vmcore/vmm/main/physMem_monitor.c:1123
  2. Add physical disk to guest - In addition to the main vmware virtual drive that your guest OSX boots from
    1. i found SATA interface to *never* work vs IDE or SCSI... SCSI gave some minor warning so i went with IDE / full disk / persistent
  3. MBR trick to allow boot utilities (e.g. Clover installer) under vmware guest to write to physical disk:
    1. In my experience, on Windows 8.1 at least, simply taking the drive "offline" via DiskManagement was not enough
    2. ** This must be done BEFORE firing up vmware guest
    3. hide the physical disk from Windows by temporarily clearing the "MBR magic" signature in the very last 2 bytes of sector 0 (see DirectDisk tool screenshot at bottom under "MBR Trick")
    4. then refresh Disk Management (or DiskPart.exe > rescan) and the drive will show that it's now completely unknown
    5. now put the 55AA signature back so the Mac guest can see the drive - but be careful not to refresh Disk Management or DiskPart
    6. now fire up vmware guest and you're good to slam that drive all day long

Lessons Learned:

  1. it seems crucial to format the drive in GPT vs MBR (and yes, interestingly, the MBR magic cookie is present even under GPT format)
  2. starting from a completely bare drive - just format it as GPT Journaled with a single partition via DiskUtil - this will create an unavoidable ~200MB EFI partition which is good for clover
  3. Yosemite installer or Recovery script will add "Recovery HD" partition - however, i don't particularly see the need for Recovery mode vs booting into OSX VM
  4. on the VM image i had major kernal_task CPU crunches that would storm in and bring everything to a stand still... guessing thru googling that some IO kext is getting hung up... i disabled sleep and this issue no longer occurred, no big surprise.
  5. easy success with Migration Assistant restoring from Time Machine backup after booting into a fresh OSX install makes this my preferred approach


Install Steps:

  1. Fire up the VMware OS X guest on pre-installed virtual Yosemite image (Bits 1 & 2 above)
    1. Make sure BEFORE launching OS X guest, perform "#3. MBR trick" under "VMware Guest Configs" above
    2. if you install the darwin.iso tools the resolution does get a nice little bump from 1024x768 to 1920x1080... and it seems to be slightly more responsive - find in: C:\Program Files (x86)\VMware\VMware Workstation\darwin.iso
    3. Drive must be formatted before Yosemite installer will recognize as a valid installation point (specify GPT & Journaled)
  2. Install Yosemite to the physical drive via Apple App Store download
    1. I count 3 restarts (few mins stuck on 1 sec remaining, then maybe a 20 mins run) - the 3rd and final looped me back to the beginning of the install, so then just bail out and reboot back into virtual Yosemite
    2. If you wind up hosing that last profile setup stage like i did :| this article is handy :)
    3. Recommend selecting the virtual disk for startup as convenient to making repairs on the broken physical from the working virtual
  3. Download & install latest Clover via Configurator - Remember to select the physical drive as the installation point
  4. Clover Configurator settings:
    1. Boot tab:
      1. -v - verbose, you're going to want to watch for any clues if it blows up
      2. npci=0x2000 - everybody says this one is crucial
      3. nvda_drv=1 - (my hardware)  enables loading Nvidia kexts
      4. kext-dev-mode=1 - this enables loading of unsigned kexts
      5. slide=0 - pulled this from a guide (not sure necessary)
    2. Kernel and Kext Patches
      1. KernelHaswellE (my hardware)
    3. Install Drivers - for Yosemite everything will be 64bit and I'm doing UEFI only so we'll be selecting only from the two bottom sections on the Install Drivers tab (i.e. "Drivers UEFI 64 bit" and "Extra Drivers")
      1. remove VBoxHfs
      2. add HFSPlus UEFI
      3. ---- my hardware --- otherwise Clover will hang trying to allocate contiguous memory right after OS selection
      4. add OsxAptioFixDrv
      5. add OsxLowMemFixDrv
      6. add OsxFatBinaryDrv UEFI
    4. Copy kexts to EFI\EFI\CLOVER\Kexts\10.10
      • FakeSMC
      • VoodooTSCSync (only for 6/8 core support, my hardware)
  5. AppleIntelE1000e (my hardware) - install to traditional /S/L/E via KextWizard... didn't seem to work when loaded from EFI/CLOVER/Kexts
  6. You should now be able to reboot into this new physical OS X - *** I've needed to include "nv_disable=1" in the boot args until i've gotten the Nvidia WebDrivers loaded ***
  7. Play it safe, do a Time Machine backup of this pristine install before you do anything else to screw it up *** especially before the Nvidia drivers ***, i've had them black screen me... but if that happens, follow the notes under "Updating Nvidia" above
  8. Last juicy step is to go ahead and install latest full Nvidia web drivers (Tip: confirm your specific OS X build via Finder > About This Mac > and hold ⌘ when you click the version number :)

Misc tweaks:

  • DiskPart cheat sheet
  • XtraFinder - F2=rename, Enter=launch file, Delete=delete file, dual pane tabbed Finders and tons of other must haves
  • Fix Home/End keys: Karabiner > "PC style" keys options
  • Show All Drives in DiskUtility:
    defaults write com.apple.DiskUtility DUDebugMenuEnabled 1
  • Avoid Microsoft Remote Desktop self signed certificate lockup (ref#1, ref#2)
    1. Use Activity Monitor > View > All Processes to kill SecurityAgent which will dump the hung authorization popup
    2. Open Keychain Access app in OSX
    3. Select Certificates under the category heading - trusted certs are marked with a white plus in blue circle
    4. double click your untrusted certificate
    5. expand Trust section
    6. select Always Trust for SSL
    7. close, done
  • Enable Time Machine saving to Windows share (smb)
    1. Save a "sparsebundle" image to your share via DiskUtil > new image... 500GB or whatever... it's "sparse" so it won't use all the space right away... go with "Single Partition - GUID" and Journaled
    2. "Mount" your share via Finder ⌘-k, confirm by Finder > prefs > SideBar > Devices > {your machine}...  look for share as a drive icon there
    3. Double click the sparsebundle to get that mounted as well
    4. Terminal: sudo tmutil setdestination /Volumes/{sparsebundle drive}
    5. Fire up Time Machine prefpane and select that drive, yay!
    6. Use Users prefpane > Login Items to make the two mounts automatic after reboots so that Time Machine has continuous access to do its background backup magic
    7. CONFIRM THAT YOU CAN RECOVERY RESTORE from this rather unsanctioned source
    8. you could setup a bootable Clover recovery partition
    9. but i ran aground going that route with what appeared to be permissions issues after modifying the BaseSystem.dmg to include my NIC kext... so i'm of the opinion that the virtual OS X serves this "recovery" purpose nicely... it's a resilient solution because if we somehow trash it, we just unzip the 100% working source vmdk again and spin back up fresh.
  • (unsuccessful) Time Machine restore over NFS from Recovery mode
    • (easy success with Migration Assistant restoring from Time Machine backup after booting into a fresh OSX install makes that my preferred approach)
    • SMB is not supported in the limited Recovery environment so NFS is the next obvious choice to restore from a network source
    • NFSAxe was the one Windows NFS server that did at least support the basic OSX client to Windows mount (after trying both FreeNFS and haneWin NFS)
    • Time Machine via NFS on Mavericks and Mac NFS client tutorial - details pertinent Terminal commands... but ultimately ran aground with "sparsebundle not compatible" error which seemed like a limitation of the mount util (hdiutil) or the underlying filesystem libraries not available under recovery mode
      • make root drive writeable: mount -uw /
      • create mount point: mkdir /private/MacBackups
      • mount -t nfs beejquad:/m/macbackups /private/MacBackups
    • If curious to try, the Recovery mode tools can be fired up under standard OSX
      • mount any "Recovery HD" partition you can get your hands on
      • then under com.apple.recovery.boot, find BaseSystem.dmg and mount that (it is hidden)
      • Then the special Time Machine full restore app is under: /System/Installation/CDIS/Time\ Machine\ System\ Restore.app/Contents/MacOS/Time\ Machine\ System\ Restore ... but again, this didn't pan out for me since i wasn't able to mount my sparsebundle image that contained the Time Machine backups... it seemed to be a Recovery mode limitation because the sparsebundle file continues to mount fine under standard OSX boot
  • Mounting EFI partition under windows
    1. launch cmd.exe, then:
    2. diskpart
    3. list disk (looking for the right drive)
    4. select disk x (where x is drive number)
    5. list part
    6. select part 1 (EFI will be first on a normally formatted GUID drive)
    7. assign letter=e
    8. (when done) remove letter=e
    9. Then need to launch explorer.exe as admin to access this E: drive
      1. cmd.exe as admin
      2. taskkill /im explorer.exe /f
      3. explorer

MBR Trick:

0

Saturday, December 13, 2014

Chrome Blacklist Blocker (PowerShell)

If you need this, you'll know why ;)

Save ChromeBlacklistBlocker.ps1 somewhere local.

You can run it via right mouse > "Run with PowerShell".
It will dump out some event text whenever it notices a registry change.
(this is currently commented out and latest code hides the powershell console window after launch)

Or more permanently, put a shortcut like this into your auto "Startup" folder:
powershell.exe {path}\ChromeBlacklistBlocker.ps1

It will monitor the HKLM\Software\Policies registry branch and delete the value named "1" under Google\Chrome\ExtensionInstallBlacklist.
This value is specific to my scenario but is of course editable to your specific needs.

You can test it is working by creating the "1" value yourself and it should disappear.

Another good way to test is to fire gpupdate.exe force a group policy update - again, if you need this, that should make sense :)

More Google search keywords: block registry key