VIATHINKSOFT AUTOSFX

Benefits

Compatible with WinRAR and other software (Stub is small enough)
Compatible with Linux' UnZip (No Warnings!)
Compatible with AuthentiCode
Compatible with Windows 7
Compatible with Windows 95
Accepts encrypted files (currently only ZIP 2.0 Standard)

Currently not supported

AES-Encryption (128, 256 Bit)

Current overhead

458 KB (Delphi 2006)

Cancel

Press ESC to cancel.

The program waits 1 second before starting extraction (Prevention of malicious AutoRun's, which call the creator SFX in an infinite loop)

Structure of a ViaThinkSoft AutoSFX Archive

Extractor [UPX'ed] includes DelZip190.dll (B4) as Resource
ZIP (Offset adjusted) File comment includes "ViaThinkSoft AutoSFX Archive"
Optional: Authenticode Certificate

Process

Extract DelZip DLL into TempDir
Extract contents directly
Open the extracted data and/or execute special AutoRun.inf (see below)
Delete the DLL from TempDir

Behavior

ZIP has 1 file => Extract DIRECTLY in the specified directory Is it a directory? => Open the new directory in Windows Explorer is it a file? => Open Windows Explorer and select the new file. ZIP has 2+ files => Create a directory with the name of the SFX and extract into it => Open the new created directory in Windows Explorer

Semantic archive comment

The extractor looks into the file comment to determinate the behavior while unzipping. YOU can influence the behavior when creating your ZIP files.

Following switches are possible:

C_ASFX_CB_OVR = 'AutoSFX Conflict Behavior: Overwrite all'; C_ASFX_CB_NEW = 'AutoSFX Conflict Behavior: Overwrite older'; C_ASFX_CB_ASK = 'AutoSFX Conflict Behavior: Ask'; C_ASFX_CB_AVO = 'AutoSFX Conflict Behavior: Avoid'; (default)

C_ASFX_CP_BEF = 'AutoSFX Comment Presentation: Before extracting'; C_ASFX_CP_AFT = 'AutoSFX Comment Presentation: After extracting'; C_ASFX_CP_NON = 'AutoSFX Comment Presentation: None'; (default)

C_ASFX_FC_THS = 'AutoSFX Extraction Target: Extract here'; (default) C_ASFX_FC_DSK = 'AutoSFX Extraction Target: Extract to Desktop'; C_ASFX_FC_ASK = 'AutoSFX Extraction Target: Choose directory';

Note: If you are running the SFX from a CD-Rom, a write-protected directory or a flobby (doesn't matter if it is write-protected!), the extraction "Here" will be ignored and converted into "Desktop".

Note: "Avoid" means that an alternative file/foldername will be determinated.

Special AutoRun.inf

[AutoSFX]
Operation=open			; Part of ShellExecute. Usually 'open' or 'runass' (e.g. for admin privilegies)
FileName=AutoRun.exe		; The filename to be executed
Parameters=			; Optional parameters
Directory=			; Optional Working directory
ShowCmd=			; (See MSDN Reference) Usually WS_NORMAL or WS_HIDE
OpenUnzippedContent=true	; After we have opened the application, should we still show the extracted data in Windows Explorer? (Default behavior if not AutoRun is set)

More information about the first 5 values: http://msdn.microsoft.com/en-us/library/bb762153(VS.85).aspx

danielmarschall/autosfx