Escape ARP Job With New Process - Revision history

Anders: No need for the system /NOUNLOAD warning

2010-01-18T23:21:00Z

No need for the system /NOUNLOAD warning

â† Older revision		Revision as of 23:21, 18 January 2010
Line 5:		Line 5:
	WARNING: This code has only been tested on XP SP2, before using this code you should check Windows2000 and Vista to make sure one has access to the job object on these systems (and that the name of the object is the same)		WARNING: This code has only been tested on XP SP2, before using this code you should check Windows2000 and Vista to make sure one has access to the job object on these systems (and that the name of the object is the same)

			<strike>
	WARNING2: This code uses System::Store to try to preserve the registers, but the WinVer macros do not use the /NOUNLOAD flag, you might want to use SetPluginUnload alwaysoff		WARNING2: This code uses System::Store to try to preserve the registers, but the WinVer macros do not use the /NOUNLOAD flag, you might want to use SetPluginUnload alwaysoff
	, or replace the ${AtLeastWin2000} macro		, or replace the ${AtLeastWin2000} macro</strike>

	<highlight-nsis>		<highlight-nsis>

Anders: manual>alwaysoff "typo"

2007-09-14T08:35:06Z

manual>alwaysoff "typo"

â† Older revision		Revision as of 08:35, 14 September 2007
Line 5:		Line 5:
	WARNING: This code has only been tested on XP SP2, before using this code you should check Windows2000 and Vista to make sure one has access to the job object on these systems (and that the name of the object is the same)		WARNING: This code has only been tested on XP SP2, before using this code you should check Windows2000 and Vista to make sure one has access to the job object on these systems (and that the name of the object is the same)

	WARNING2: This code uses System::Store to try to preserve the registers, but the WinVer macros do not use the /NOUNLOAD flag, you might want to use SetPluginUnload ~~manual~~, or replace the ${AtLeastWin2000} macro		WARNING2: This code uses System::Store to try to preserve the registers, but the WinVer macros do not use the /NOUNLOAD flag, you might want to use SetPluginUnload alwaysoff
			, or replace the ${AtLeastWin2000} macro

	<highlight-nsis>		<highlight-nsis>

Anders: System::Store warning + minor fix

2007-09-14T08:32:32Z

System::Store warning + minor fix

â† Older revision		Revision as of 08:32, 14 September 2007
Line 4:		Line 4:

	WARNING: This code has only been tested on XP SP2, before using this code you should check Windows2000 and Vista to make sure one has access to the job object on these systems (and that the name of the object is the same)		WARNING: This code has only been tested on XP SP2, before using this code you should check Windows2000 and Vista to make sure one has access to the job object on these systems (and that the name of the object is the same)

			WARNING2: This code uses System::Store to try to preserve the registers, but the WinVer macros do not use the /NOUNLOAD flag, you might want to use SetPluginUnload manual, or replace the ${AtLeastWin2000} macro

	<highlight-nsis>		<highlight-nsis>
Line 16:		Line 18:
	pop $R0		pop $R0
	${If} $9 != 0		${If} $9 != 0
			StrCpy $R0 1 ;reset error
	System::Alloc /NOUNLOAD 112		System::Alloc /NOUNLOAD 112
	pop $4		pop $4

Anders at 08:22, 14 September 2007

2007-09-14T08:22:48Z

New page

{{PageAuthor|Anders}}

This function tries to set the JOB_OBJECT_LIMIT_BREAKAWAY_OK flag on the job object the Add/Remove programs application creates for an uninstall process so the user can interact with the ARP applet even when there are running child processes created by the uninstaller.

WARNING: This code has only been tested on XP SP2, before using this code you should check Windows2000 and Vista to make sure one has access to the job object on these systems (and that the name of the object is the same)

<highlight-nsis>
!include WinVer.nsh
Function un.ExecExitARPJob ;_exec
System::Store /NOUNLOAD S
pop $R1
StrCpy $9 0 ;hJob
StrCpy $R0 1 ;error?
${If} ${AtLeastWin2000}
System::Call /NOUNLOAD 'kernel32::OpenJobObject(i 2,i 0,t "ARP Job")i.r9 ?e' ;JOB_OBJECT_SET_ATTRIBUTES=2
pop $R0
${If} $9 != 0
System::Alloc /NOUNLOAD 112
pop $4
${IfThen} $4 = 0 ${|} goto again ${|}
System::Call /NOUNLOAD "*$4(i,i,i,i,i 0x800)" ;JOB_OBJECT_LIMIT_BREAKAWAY_OK=0x800
System::Call /NOUNLOAD 'kernel32::SetInformationJobObject(i $9,i 9,i $4,i 112)i.r0' ;JobObjectExtendedLimitInformation=9
System::Free /NOUNLOAD $4
System::Call /NOUNLOAD '*(i,i,i,i)i.r1'
System::Alloc /NOUNLOAD 72
pop $4
System::Call /NOUNLOAD "*$4(i 72)"
System::Call /NOUNLOAD 'kernel32::CreateProcess(i0,t R1,i0,i0,i0,i 0x01000000,i0,i0,i $4,i $1)i.r0 ?e' ;CREATE_BREAKAWAY_FROM_JOB=0x1000000
pop $R0
System::Free /NOUNLOAD $4
System::Call /NOUNLOAD "*$1(i.r3,i.r4,i,i)"
System::Free /NOUNLOAD $1
${IfThen} $0 = 0 ${|} goto again ${|}
System::Call /NOUNLOAD 'kernel32::CloseHandle(i $3)'
System::Call /NOUNLOAD 'kernel32::CloseHandle(i $4)'
StrCpy $R0 0
${EndIf}
${EndIf}
again:
${If} $R0 != 0
ClearErrors
Exec '$R1'
${Unless} ${Errors}
StrCpy $R0 0
${EndIf}
${EndIf}
${IfThen} $9 != 0 ${|} System::Call /NOUNLOAD "kernel32::CloseHandle(i $9)" ${|}
;push $R0 ;push result to stack, 0 on success
System::Store L
FunctionEnd

Section Uninstall
push "notepad.exe"
call un.ExecExitARPJob
SectionEnd
</highlight-nsis>

[[Category:System Plugin Examples]]