PureBasic Forums - English

gnozal wrote:

Dummy wrote:1. I download "LibraryUpdater.zip" linked in your first post
2. I extrect it into a new folder called "LibraryUpdater"
3. I doubleclick on the LibraryUpdater.exe
4. Nothing happens - no window no application - no error - simply nothing

You don't see any window ? Just tested on XP sp2 : no problem here.

Note that nothing happens until you press the 'On line check' button.
Also note that PB4.1x libs are not handled yet (until I know wich library needs a specific version).

Dummy wrote:No window at all.

It worked once some time ago. But suddenly it stopped working without any visible reason.

Dummy wrote:You have an Bufferoverflow somewhere in your application! This might be an major security risk AND your application won't launch on systems that have the Data Execution Prevention (introduced in Windows XP SP2) active.

Dummy wrote:If you use a spectial method to cipher or compress your your executable and inject the executable code it into another process please make shure to allocate the memory you write the data into with the #PAGE_EXECUTE flag.

gnozal wrote:

Dummy wrote:You have an Bufferoverflow somewhere in your application! This might be an major security risk AND your application won't launch on systems that have the Data Execution Prevention (introduced in Windows XP SP2) active.

Thanks. I will have a look.

Dummy wrote:If you use a spectial method to cipher or compress your your executable and inject the executable code it into another process please make shure to allocate the memory you write the data into with the #PAGE_EXECUTE flag.

Not really, standard compressor plus CRC check IIRC. Maybe it's the compressor. I will test with latest UPX version.
Could you test this WIP : http://freenet-homepage.de/gnozal/LibraryUpdater.zip ?

Dummy wrote:This one works!
Thanks for the fast help!
I'm a little curious... did the packer, the crc-check or a real buffer over-/underflow cause the DEP to stop the executable from working?

Ajm wrote:Would it be possible to add manual proxy settings to the update tool.
Since updating my PC at work to XP pro SP2 from SP1 then tool does not connect to the internet through our ISA server.

InitNetwork() 
Url$ = "http://freenet-homepage.de/gnozal/PureFORM.zip" 
;
; ///////////////////
Port = 80 
Login.s = ""
Password.s = ""
; ////////////////////
;
hInet = InternetOpen_("MyTest/1.0",0,0,0,0) ; #INTERNET_OPEN_TYPE_PRECONFIG = 0 ; use registry configuration 
If hInet 
  hURL  = InternetOpenUrl_(hInet,Url$,0,0,$80000000,0) ; #INTERNET_FLAG_RELOAD = $80000000 
  If hURL 
    Domain$  = StringField(Url$,3,"/") 
    hInetCon = InternetConnect_(hInet,Domain$,Port,Login,Password,3,0,0) ; 3 = HTTP
    If hInetCon 
      hHttpOpenRequest = HttpOpenRequest_(hInetCon,"HEAD",ReplaceString(Url$,"http://"+Domain$+"/",""),#Null,#Null,0,$80000000,0) 
      If hHttpOpenRequest 
        iretval = HttpSendRequest_(hHttpOpenRequest,#Null,0,0,0) 
        If iretval 
          BufferLength = 2048 : Buffer$ = Space(BufferLength) 
          HttpQueryInfo_(hHttpOpenRequest,19,@Buffer$,@BufferLength,0) 
          String$ = PeekS(@Buffer$,BufferLength) 
          String$ = Trim(String$) 
          If String$ = "200" 
            BufferLength = 2048 : Buffer$ = Space(BufferLength) 
            HttpQueryInfo_(hHttpOpenRequest,22,@Buffer$,@BufferLength,0) 
            String$ = PeekS(@Buffer$,BufferLength) 
            MessageRequester("API", String$) ; <------ if it works, you should see a message requester
          EndIf 
        EndIf 
      EndIf 
      InternetCloseHandle_(hInetCon) 
    EndIf 
    InternetCloseHandle_(hURL) 
  EndIf 
  InternetCloseHandle_(hInet) 
EndIf

Ajm wrote:Hi gnozal,
I have just tried the above code and run it through the debugger.
It pauses for a while at the following line then ends.
iretval = HttpSendRequest_(hHttpOpenRequest,#Null,0,0,0)
iretval returned is 0