TweetFollow Us on Twitter

FakeFinder
Volume Number:12
Issue Number:4
Column Tag:Assembler Workshop

FakeFinder

A tiny file-launching hack for those emergencies...

By Lee David Rimar

Note: Source code files accompanying article are located on MacTech CD-ROM or source code disks.

What with it being April and the call of April Fool’s Day echoing in the breezes, it seems an appropriate time to put before the public this little horror that arrived at our desks a while back. Please bear in mind that when we say, “Kids, don’t try this at home,” this is one case where we mean it. It really does work, but the publisher, editors and staff of MacTech Magazine categorically refuse to stand behind or endorse it in any way, and will not be held responsible for what happens to you or anyone else as a result of your assembling this code or downloading the alternate Finder app. In fact, we can’t even be held responsible for what may happen to you if you read the article! Why not just turn the page now? Hey, I said turn the page! Okay, you asked for it

What It Is and
Why You Might Want It

With current releases of the Mac OS, it’s sometimes hard to build a useful emergency boot diskette. If your hard-drive won’t boot, you can usually use the Disk Tools floppy to bring up your system. But if you want other diagnostic and/or system recovery programs on your “emergency” diskette, there usually isn’t enough space. Enter FakeFinder.

FakeFinder is a tiny program (under 800 bytes) that simply launches other programs. On emergency boot diskettes, FakeFinder replaces the real Finder, and frees a lot of space.

How To Use It

To create an emergency boot disk with FakeFinder:

• Format a diskette and label it Emergency.

• Copy the following file(s) from your Disk Tools diskette to the root directory of Emergency:

1) the System file

2) optional: the Apple CD-ROM Extension

• If your Mac requires any system enablers, copy these also to the root directory of Emergency.

• Copy the “Finder” application from the FakeFinder package to the root directory of Emergency.

You now have a bootable diskette with considerable free space on it. Go ahead and add any other programs you want in the root directory of this disk, anything that will fit. My personal preference is to keep most of what’s on the Disk Tools floppy, and add my tape backup/restore software.

When you reboot with this diskette, FakeFinder loads and creates a File menu with only two items on it: Open and Quit.

To launch any program(s), select Open. This will let you select any applications, aliases to applications, and even a “real” Finder on any mounted drive - including CDs, if you copied the Apple CD-ROM Extension to the diskette.

To shut down your Mac, select Quit, and also quit any other applications you may have launched. Your Mac will then shut down normally.

Limitations
(or, This Ain’t No Swiss Army Knife)

To be so small, FakeFinder leaves a lot of stuff out. The most important limitations:

• No desk accesories/Apple Menu items.

• Without a real Finder present, you can’t use File Sharing.

• Programs needing to find a “Blessed Folder,” containing a real Finder and System, may not work.

The point of FakeFinder was to make it as small as possible, so I don’t plan to solve any of these problems.

By The Way: How Did It Get So Small?

Normally, to create an application this small, you would start in assembly language. But I don’t grok 68K assembler well enough to write anything from the ground up. So I wrote, compiled, linked, and tested FakeFinder using FORTRAN, a language I do know. Then I disassembled the compiler’s output, modified it to reduce the code size, and re-assembled it.

Disclaimers
(or, Anything Free Comes With No Guarantee)

Though FakeFinder works properly on every system I have tested so far, it may not work on tomorrow’s systems. This is because it uses the _Launch trap to sublaunch applications, and Apple says this functionality may go away in future OS releases. If and when that time comes, it will be necessary to rewrite any applications using the sublaunch facility.

References

Macintosh Tech Notes #126, #180, #205 (old numbering system).

MACHINE MC68000

; system routines used in this module

_AppendMenu     OPWORD  $A933
_DrawMenuBar    OPWORD  $A937
_ExitToShell    OPWORD  $A9F4
_FindWindow     OPWORD  $A92C
_HFSDispatch    OPWORD  $A260
_HiliteMenu     OPWORD  $A938
_InitCursor     OPWORD  $A850
_InitDialogs    OPWORD  $A97B
_InitFonts      OPWORD  $A8FE
_InitGraf       OPWORD  $A86E
_InitMenus      OPWORD  $A930
_InitWindows    OPWORD  $A912
_InsertMenu     OPWORD  $A935
_Launch         OPWORD  $A9F2
_MenuSelect     OPWORD  $A93D
_NewMenu        OPWORD  $A931
_StdFile        OPWORD  $A9EA
_SetVol         OPWORD  $A015
_WaitNextEvent  OPWORD  $A860

START:  MAIN

; make a stack, initialize managers, and set up menus

        link            a6,#-664

        lea             (266,a7),a2 ; qd.grafport
        move.l          a2,(a7)
        _InitGraf
        _InitFonts
        _InitWindows
        _InitMenus
        _InitDialogs
        _InitCursor

        lea             AppleMenu,a2
        move.l          a2,(a7)
        move.w          #$80,(4,a7)
        _NewMenu
        move.l          (a7),a3
        move.w          #0,(a7)
        move.l          a3,(2,a7)
        _InsertMenu
        lea             FileMenu,a2
        move.l          a2,(a7)
        move.w          #$81,(4,a7)
        _NewMenu
        move.l          (a7),a3
        move.w          #0,(a7)
        move.l          a3,(2,a7)
        _InsertMenu
        lea             MenuItems,a2
        move.l          a2,(a7)
        move.l          a3,(4,a7)
        _AppendMenu
        _DrawMenuBar

        sub.l           #36,a7

Loop:

; If (.NOT. WaitNextEvent(
;       VAL2(-1),event,VAL(15),VAL(0))) Loop

        move.l          #0,(a7)
        move.l          #15,(4,a7)
        lea             (288,a7),a2
        move.l          a2,(8,a7)
        move.w          #-1,(12,a7)
        _WaitNextEvent
        move.b          (a7),d3
        sub.l           #$000e,a7
        tst.b           d3
        beq.s           Loop

; If (event.what != mouseDown) Loop

        move.w          (288,a7),d3
        cmp.w           #1,d3
        bne.s           Loop

; If (FindWindow(
;       VAL(event.where),dummy) != inMenuBar) Loop

        lea             (272,a7),a2
        move.l          a2,(a7)
        move.l          (298,a7),(4,a7)
        _FindWindow
        move.w          (a7),d3
        sub.l           #8,a7
        cmp.w           #1,d3
        bne.s           Loop

; pick = MenuSelect(VAL(event.where))
; Call HiliteMenu(VAL2(0))

        move.l          (298,a7),(a7)
        _MenuSelect
        move.l          (a7),d3
        move.w          #0,(a7)
        _HiliteMenu
        sub.l           #6,a7

; If (pick == z'00810001') GetFile
; If (pick != z'00810002') Loop
; Call ExitToShell

        cmp.l           #$810001,d3
        beq.s           GetFile
        cmp.l           #$810002,d3
        bne.s           Loop

        _ExitToShell

GetFile:

; Call SFGetFile(
;       VAL(coords),0,VAL(0),VAL2(3),types,VAL(0),reply)

        lea             (304,a7),a2
        move.l          a2,(a7)
        move.l          #0,(4,a7)
        lea             types,a2
        move.l          a2,(8,a7)
        move.w          #3,(12,a7)
        move.l          #0,(14,a7)
        move.l          #0,(18,a7)
        move.l          #$00400040,(22,a7)
        move.w          #$2,-(a7)
        _StdFile
        sub.l           #$001a,a7

; If (.NOT. reply.good) Loop

        move.b          (304,a7),d3
        tst.b           d3
        beq.s           final

; myPB.p_ioName = LOC(reply.fName)
; myPB.ioVRefNum = reply.vRefNum
; myPB.ioFDirIndex = 0
; myPB.ioDirID = 0
; If (PBGetCatInfoSync(myPB) != 0) Loop

        lea             (314,a7),a2
        move.l          a2,(478,a7)
        move.w          (310,a7),(482,a7)
        move.l          #0,(488,a7)
        move.l          #0,(508,a7)
        lea             (460,a7),a2
        move.l          a2,(a7)
        movea.l         (a7)+,a0
        move.w          #9,d0
        _HFSDispatch
        sub.l           #4,a7
        tst.w           d0
        bne.s           final

; params.ioCompletion = 0
; params.ioResult = 0
; params.p_ioName = 0
; params.ioVRefNum = reply.vRefNum
; If(PBSetVolSync(params).LT.0) Loop

        move.l          #0,(392,a7)
        move.w          #0,(396,a7)
        move.l          #0,(398,a7)
        move.w          (310,a7),(402,a7)
        lea             (380,a7),a2
        move.l          a2,(a7)
        movea.l         (a7)+,a0
        _SetVol
        sub.l           #4,a7

; ap.pfName = LOC(reply.fName)
; ap.param = 0
; ap.LC = z'4C43'
; ap.extBlockLen = 6
; ap.fFlags = myPB.ioFlFndrInfo.fdFlags
; ap.launchFlags = z'C0000000'

        lea             (314,a7),a2
        move.l          a2,(568,a7)
        move.w          #0,(572,a7)
        move.w          #$4C43,(574,a7)
        move.l          #6,(576,a7)
        move.w          (500,a7),(580,a7)
        move.l          #$c0000000,(582,a7)

; ignore = launch(ap)

        lea             (568,a7),a2
        move.l          a2,(a7)
        movea.l         (a7)+,a0
        _Launch
        sub.l           #4,a7

final:  bra             Loop

; some constants embedded in code section

types: ; file types for getfile, what you can launch with FakeFinder

        dc.l            $4150504c ; APPL
        dc.l            $464e4452 ; FNDR
        dc.l            $61647270 ; adrp (application aliases)

AppleMenu: ; Apple Menu character, for appearances only!

        dc.b    1
        dc.b    20

FileMenu: ; Pascal String “File”

        dc.b    4
        dc.b    70
        dc.b    105
        dc.b    108
        dc.b    101
        dc.b    0 ; pad so next lands on even address

MenuItems: ; Pascal string “Open;Quit”

        dc.b    9
        dc.b    79
        dc.b    112
        dc.b    101
        dc.b    110
        dc.b    59
        dc.b    81
        dc.b    117
        dc.b    105
        dc.b    116

        ENDMAIN
        END

 
AAPL
$109.57
Apple Inc.
+2.83
MSFT
$45.81
Microsoft Corpora
+0.65
GOOG
$506.28
Google Inc.
+10.89

MacTech Search:
Community Search:

Software Updates via MacUpdate

Tidy Up 4.0.2 - Find duplicate files and...
Tidy Up is a complete duplicate finder and disk-tidiness utility. With Tidy Up you can search for duplicate files and packages by the owner application, content, type, creator, extension, time... Read more
Typinator 6.3 - Speedy and reliable text...
Typinator turbo-charges your typing productivity. Type a little. Typinator does the rest. We've all faced projects that require repetitive typing tasks. With Typinator, you can store commonly used... Read more
GraphicConverter 9.5 - Graphics editor w...
GraphicConverter is an all-purpose image-editing program that can import 200 different graphic-based formats, edit the image, and export it to any of 80 available file formats. The high-end editing... Read more
Toast Titanium 12.0.1 - The ultimate med...
Toast Titanium goes way beyond the very basic burning in the Mac OS and iLife software, and sets the standard for burning CDs, DVDs, and now Blu-ray discs on the Mac. Create superior sounding audio... Read more
QuickBooks 2015 16.0.2.1422 R3 - Financi...
Save 20% on QuickBooks Pro for Mac today through this special discount link QuickBooks Pro 2013 helps you manage your business easily and efficiently. Organize your finances all in one place, track... Read more
Remotix 3.0.6 - Access all your computer...
Remotix is a fast and powerful application to easily access multiple Macs (and PCs) from your own Mac. Features: Complete Apple Screen Sharing support - including Mac OS X login, clipboard... Read more
BetterZip Quick Look Generator 1.5 - Let...
BetterZip Quick Look Generator lets you view the contents of compressed archives through OS X's Quick Look functions. Simply select an archive in the Finder, in Mail, or Spotlight and press the... Read more
Sandvox 2.9.3 - Easily build eye-catchin...
Sandvox is for Mac users who want to create a professional looking website quickly and easily. With Sandvox, you don't need to be a Web genius to build a stylish, feature-rich, standards-compliant... Read more
Pixelmator 3.3.1 - Powerful layer-based...
Pixelmator is a beautifully designed, easy-to-use, fast, and powerful image editor for OS X. It has everything you need to create, edit, and enhance your images. Pixelmator is a layer-based image... Read more
OmniGraffle Pro 6.1.1 - Create diagrams,...
OmniGraffle Pro helps you draw beautiful diagrams, family trees, flow charts, org charts, layouts, and (mathematically speaking) any other directed or non-directed graphs. We've had people use... Read more

Latest Forum Discussions

See All

Hipstify Review
Hipstify Review By Jennifer Allen on December 17th, 2014 Our Rating: :: COOL FILTERSUniversal App - Designed for iPhone and iPad Add filters, quotes, and fancy frames to your images, thanks to Hipstify.   | Read more »
Mighty Smighties Gets Evolve Cards and N...
Mighty Smighties Gets Evolve Cards and New Worlds Posted by Jessica Fisher on December 17th, 2014 [ permalink ] Universal App - Designed for iPhone and iPad | Read more »
Duckie Deck Card Wars Review
Duckie Deck Card Wars Review By Amy Solomon on December 17th, 2014 Our Rating: :: STYLISH GAME OF CARDSUniversal App - Designed for iPhone and iPad Duckie Deck Card Wars adapts the classic card game War for use on devices, complete... | Read more »
PDF Office Review
PDF Office Review By Jennifer Allen on December 17th, 2014 Our Rating: :: CONVENIENT PDF EDITINGiPad Only App - Designed for the iPad Want to create your own PDF files? Import them from elsewhere? Adapt a web page into a PDF? PDF... | Read more »
The Out There: Ω Edition Update will be...
The Out There: Ω Edition Update will be Releasing in 2015, Bringing Better Graphics and Additional Content Posted by Jessica Fisher on December 17th, 2014 [ permalink ] | Read more »
Pinball Planet Pro (Games)
Pinball Planet Pro 1.02 Device: iOS Universal Category: Games Price: $2.99, Version: 1.02 (iTunes) Description: - Our missionWe've always loved to play pinball games but we noticed most modern pinball games are simulators for the... | Read more »
Ultrakam 4k. The Professional Camera App...
Ultrakam 4k. The Professional Camera App. 3.0 Device: iOS Universal Category: Photography Price: $9.99, Version: 3.0 (iTunes) Description: In March 2014, Ultrakam brought Film Resolution for iPhone for the first time ever and now is... | Read more »
Email+ (Business)
Email+ 1.0 Device: iOS Universal Category: Business Price: $2.99, Version: 1.0 (iTunes) Description: Send email, fast! | Read more »
Mayor it up in SimCity BuildIt, Out Now
Mayor it up in SimCity BuildIt, Out Now Posted by Jessica Fisher on December 16th, 2014 [ permalink ] Universal App - Designed for iPhone and iPad | Read more »
Crusaders Quest Review
Crusaders Quest Review By Jennifer Allen on December 16th, 2014 Our Rating: :: GOTTA HIRE EM ALLUniversal App - Designed for iPhone and iPad Hire as many heroes as possible in this fun at first but grind-heavy freemium RPG.   | Read more »

Price Scanner via MacPrices.net

Holiday sales continue: MacBook Pros for up t...
 B&H Photo has new MacBook Pros on sale for up to $300 off MSRP as part of their Holiday pricing. Shipping is free, and B&H charges NY sales tax only: - 15″ 2.2GHz Retina MacBook Pro: $1699... Read more
Google Search App For iOS Gets A Major Makeov...
Google has given iOS users an early Christmas present with a substantial update of it’s not-very-often-upgraded Google Search app. Google Search has been my go-to tool for Web searches since it was... Read more
ShopKeep Apple Pay And Chip Card Reader Avail...
ShopKeep, a cloud-based technology provider to more than 10,000 small business owners to manage retail shops and restaurants with iPads, has released its new Apple Pay and chip card reader. This... Read more
Holiday sale! 27-inch 5K iMac for $2299, save...
 B&H Photo has the 27″ 3.5GHz 5K iMac in stock today and on sale for $2299 including free shipping plus NY sales tax only. Their price is $200 off MSRP, and it’s the lowest price available for... Read more
Holiday Sale! 3.7GHz Quad Core Mac Pro availa...
 B&H Photo has the 3.7GHz Quad Core Mac Pro on sale for $2599 including free shipping plus NY sales tax only. Their price is $400 off MSRP, and it’s the lowest price for this model from any... Read more
iPhone 6 Number 3 Canadian Google Search Of 2...
CTVNews.ca reports that Apple’s iPhone 6 was the third highest-trending Google Canada search topic of 2014, exceeded only by Robin Williams largely after his death by suicide in August, and the FIFA... Read more
New iPad mini 3 Counter-Top & Wall Mount...
newMacgadgets has announced new secure all-acrylic displays for the iPad mini 3 (also works fine with the mini 2, last year’s iPad mini With Retina Display, and the original iPad mini). The new iPad... Read more
Holiday sales continue, MacBook Airs for up t...
B&H Photo has 2014 MacBook Airs on sale for up to $120 off MSRP, for a limited time, for the Thanksgiving/Christmas Holiday shopping season. Shipping is free, and B&H charges NY sales tax... Read more
B&H lowers price on 27-inch 3.2GHz iMac t...
B&H Photo has lowered their price on the 27″ 3.2GHz iMac, now on sale for $1629 including free shipping plus NY sales tax only. Their price is $170 off MSRP, and it’s the lowest price for this... Read more
15-inch 2.0GHz Retina MacBook Pro available f...
B&H Photo has lowered their price on leftover 2013 15″ 2.0GHz Retina MacBook Pros to $1499 including free shipping plus NY sales tax only. Their price is $500 off original MSRP. Read more

Jobs Board

*Apple* Retail - Multiple Positions (US) - A...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the Read more
*Apple* Retail - Multiple Positions (US) - A...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the Read more
*Apple* Retail - Multiple Positions (US) - A...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
*Apple* Retail - Multiple Positions (US) - A...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the Read more
Project Manager / Business Analyst, WW *Appl...
…a senior project manager / business analyst to work within our Worldwide Apple Fulfillment Operations and the Business Process Re-engineering team. This role will work Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.