Extract compressed files by 7z.dll

mbnoimi · 1st December 2011, 17:52

Hi all,

I want to extract a specific password protected *.7z file by using 7z.dll so I've to use CallInstDLL because I couldn't find any NSIS plugin.

I tried to use:

code:
Push "x"

Push "-t7z"

Push "files.7z"

Push "-psecret"

CallInstDLL "$INSTDIR\7z.dll" "IInArchive"

but it didn't work because of these two missing points:

I don't know what's the needed 7zip function to make extract process
I'm not sure what if I called CallInstDLL correctly or it?

Could you please help me?

I read these resources but they didn't help me here:

mbnoimi · 6th December 2011, 10:48

Guys could you please help me here

I'm googling since two days but I failed to find any result.

Afrow UK · 6th December 2011, 10:54

Either use the Nsis7z plug-in or execute 7za.exe using ExecDos/nsExec. CallInstDLL isn't for calling non NSIS DLL files; it's the old way to call plug-ins (before we had the plug-in call syntax). If you must use 7z.dll you have to call it using the System plug-in.

Stu

Yathosho · 7th December 2011, 16:24

Quote:

Originally Posted by Afrow UK

Either use the Nsis7z plug-in or execute 7za.exe using ExecDos/nsExec

unfortunately, that plugin still doesn't support any advanced 7-zip options such as extracting password protected files

mbnoimi · 10th December 2011, 15:00

Quote:

Originally Posted by Afrow UK

CallInstDLL isn't for calling non NSIS DLL files; it's the old way to call plug-ins (before we had the plug-in call syntax).

In there any way for calling DLL files (other than nsis pluings) by NSIS?

MSG · 6th December 2011, 10:54

I've no idea what CallInstDLL is, or what its syntax is supposed to be.

To unpack 7z files, you can use 7za.exe. It's legal to redistribute, without giving credit, for both commercial and non-profit applications.

Note however that hackers will always be able to extract the password from your installer. Either they replace the exe/dll you're calling, or they just extract the script itself.

LoRd_MuldeR · 10th December 2011, 20:30

The "System" plug-in is for exactly that purpose. It's part of the official NSIS distribution.

1st December 2011, 17:52	#1
mbnoimi Junior Member Join Date: Aug 2008 Posts: 7	Extract compressed files by 7z.dll Hi all, I want to extract a specific password protected *.7z file by using 7z.dll so I've to use CallInstDLL because I couldn't find any NSIS plugin. I tried to use: code: Push "x" Push "-t7z" Push "files.7z" Push "-psecret" CallInstDLL "$INSTDIR\7z.dll" "IInArchive" but it didn't work because of these two missing points: I don't know what's the needed 7zip function to make extract process I'm not sure what if I called CallInstDLL correctly or it? Could you please help me? I read these resources but they didn't help me here: http://nsis.sourceforge.net/Nsis7z_plug-in http://www.qtcentre.org/threads/2997...-interfaces%29 http://www.codeproject.com/KB/DLL/cs...face_7zip.aspx

10th December 2011, 20:30	#7
LoRd_MuldeR Major Dude Join Date: Sep 2005 Location: Somewhere over the Slaughterhouse Posts: 797	The "System" plug-in is for exactly that purpose. It's part of the official NSIS distribution. My Plugins: StdUtils \| NSISList \| CPUFeatures \| ExecTimeout \| KillProc My source of inspiration: http://youtu.be/lCwY4_0W1YI

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6th December 2011, 10:48	#2
mbnoimi Junior Member Join Date: Aug 2008 Posts: 7	Guys could you please help me here I'm googling since two days but I failed to find any result.

6th December 2011, 10:54	#3
Afrow UK Moderator Join Date: Nov 2002 Location: Surrey, England Posts: 8,434	Either use the Nsis7z plug-in or execute 7za.exe using ExecDos/nsExec. CallInstDLL isn't for calling non NSIS DLL files; it's the old way to call plug-ins (before we had the plug-in call syntax). If you must use 7z.dll you have to call it using the System plug-in. Stu

6th December 2011, 10:54	#6
MSG Major Dude Join Date: Oct 2006 Posts: 1,892	I've no idea what CallInstDLL is, or what its syntax is supposed to be. To unpack 7z files, you can use 7za.exe. It's legal to redistribute, without giving credit, for both commercial and non-profit applications. Note however that hackers will always be able to extract the password from your installer. Either they replace the exe/dll you're calling, or they just extract the script itself.