View source for How To codesign a Screen Saver for Yosemite

=== The Problem ===
Double-clicking the Screen Saver will bring up this:<br>
[[Image:ScreenSaverWontImportYosemite00.png]]
 “Flying Toasters.saver” can’t be opened because it is from an unidentified developer.
 Your security preferences allow installation of only apps from the Mac App Store and identified developers.

Simple enough - just codesign it! But that turned out to be trickier than I thought.

=== The Analysis ===
I started off with googling and looking into [[Apple]]'s Developer Forums. It seemed no-one had that problem (or solved it). So I did some research.

First I took a look at [[Yosemite]]<ref>Mac OS X 10.0</ref> built-in screen savers...

 Mac-OS-X-1010-Yosemite-VM:Screen Savers clarus$ codesign -v -d Flurry.saver/
 Executable=/System/Library/Screen Savers/Flurry.saver/Contents/MacOS/Flurry
 Identifier=com.apple.Flurry
 Format=bundle with Mach-O thin (x86_64)
 CodeDirectory v=20100 size=385 flags=0x0(none) hashes=13+3 location=embedded
 Signature size=4097
 Info.plist entries=18
 TeamIdentifier=not set
 Sealed Resources version=2 rules=14 files=6
 Internal requirements count=1 size=64
 Mac-OS-X-1010-Yosemite-VM:Screen Savers clarus$ codesign -vv Flurry.saver/
 Flurry.saver/: resource envelope is obsolete (custom omit rules)
 Mac-OS-X-1010-Yosemite-VM:Screen Savers clarus$
Interesting. 

I then added this build phase to my Screen Saver<ref>For the records, I used Mac OS X Mavericks 10.9.5 and [[XCode]] 6.1</ref>:
 #!/bin/sh
 #set -x
 #codesign -s "${CODE_SIGN_IDENTITY}" --entitlements "${CODE_SIGN_ENTITLEMENTS}" -v "${TARGET_BUILD_DIR}"
 codesign -s "${CODE_SIGN_IDENTITY}" --entitlements "${CODE_SIGN_ENTITLEMENTS}" -v "${TARGET_BUILD_DIR}/${WRAPPER_NAME}"

I made sure that the Identity used is <tt>Devloper ID Application: YOUR_NAME_HERE</tt>, leading to this:
 WroDos-MacBook-Air:Desktop heiko$ codesign -v -d  /Users/heiko/Desktop/Flying\ Toasters/Users/heiko/Library/Screen\ Savers/Flying\ Toasters.saver
 Executable=/Users/heiko/Desktop/Flying Toasters/Users/heiko/Library/Screen Savers/Flying Toasters.saver/Contents/MacOS/Flying Toasters
 Identifier=net.wurst-wasser.FlyingToasters
 Format=bundle with Mach-O thin (x86_64)
 CodeDirectory v=20200 size=535 flags=0x0(none) hashes=17+5 location=embedded
 Signature size=8518
 Timestamp=26.10.2014 18:36:40
 Info.plist entries=18
 TeamIdentifier=JQWR9K4NUM
 Sealed Resources version=2 rules=12 files=21
 Internal requirements count=1 size=224
 WroDos-MacBook-Air:Desktop heiko$ codesign -vv  /Users/heiko/Desktop/Flying\ Toasters/Users/heiko/Library/Screen\ Savers/Flying\ Toasters.saver
 /Users/heiko/Desktop/Flying Toasters/Users/heiko/Library/Screen Savers/Flying Toasters.saver: valid on disk
 /Users/heiko/Desktop/Flying Toasters/Users/heiko/Library/Screen Savers/Flying Toasters.saver: satisfies its Designated Requirement
 WroDos-MacBook-Air:Desktop heiko$
That looked good. And it was installed after double-clicking. But, it won't appear in the System Preferences. There had to be another problem.

=== The Solution ===
* add a build phase for code signing
* choose the right Developer ID
* Pray. For my part, I've given up on getting FTS running on [[Yosemite]] - I have no clue what Apple has done. Other screen savers (code-signed or not) won't work either.

----
* Links
** https://devforums.apple.com/thread/213357?tstart=75
** http://osxdaily.com/2014/07/30/install-screen-saver-mac-os-x/
** [[Flying Toasters Screen Saver]]
* References:
<references/>