TSQL Virus or Bomb?

Question

TSQL Virus or Bomb?

jgama

Mr or Mrs. 500

Points: 509
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December 5, 2003 at 12:00 am

#358698

Comments posted to this topic are about the content posted at http://www.sqlservercentral.com/columnists/jgama/tsqlvirusorbomb.asp

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Razvan Socol SSCarpal Tunnel Points: 4811 More actions · Answer 1

There is a slight chance that the script which searches for EXEC-s will not function correctly: if the procedure is larger than 4000 characters and the word "EXEC" starts in a @current_text and ends in another one.

Razvan

John Scarborough Ten Centuries Points: 1104 More actions · Answer 2

There's no such word as "virii". It's "viruses".

John Scarborough
MCDBA, MCSA

ewilson10 SSCarpal Tunnel Points: 4255 More actions · Answer 3

Hello.

I'm looking forward to playing with the 'Validate SP's and UDF's with checksum' over the next couple of weeks and I was wondering if there's a way to use this logic against Jobs and DTS packages?

Everett

Everett Wilson
ewilson10@yahoo.com

K. Brian Kelley SSC Guru Points: 114562 More actions · Answer 4

quote:
There's no such word as "virii". It's "viruses".

In scientific and medical arenas, virii tend to be used. With that said, some computer folks use virii instead of viruses. If you do a Google search you'll see it's quite accepted.

K. Brian Kelley, GSEC

http://www.truthsolutions.com/

Author: Start to Finish Guide to SQL Server Performance Monitoring

http://www.netimpress.com/

K. Brian Kelley
@kbriankelley

K. Brian Kelley SSC Guru Points: 114562 More actions · Answer 5

quote:
I'm looking forward to playing with the 'Validate SP's and UDF's with checksum' over the next couple of weeks and I was wondering if there's a way to use this logic against Jobs and DTS packages?

Yes. Generating a checksum or a hash is a standard way of checking change on most anything, to include files. For instance, you can configure products like BindView to generate a hash on critical files (such as those in C:\WINNT\) and at a later time compare the hash results to see if changes have happened. So pretty much you can do this on anything... generate the checksum or hash and then compare at a later time. For jobs you may a look at the sysjobsteps table. For DTS packages, look at sysdtspackages if stored in SQL Server.

K. Brian Kelley, GSEC

http://www.truthsolutions.com/

Author: Start to Finish Guide to SQL Server Performance Monitoring

http://www.netimpress.com/

K. Brian Kelley
@kbriankelley

ewilson10 SSCarpal Tunnel Points: 4255 More actions · Answer 6

Thanks for the information. This is shapping up to be a nice tool.

Everett

Everett Wilson
ewilson10@yahoo.com

jgama Mr or Mrs. 500 Points: 509 More actions · Answer 7

Hi Razvan,

Thank you for letting me know about that problem. You are right and there are two solutions in TSQL: one is to store the entire code in a text record in a temp table and search from there. This is slow and with lots of code envolved. The second idea is to search for EXEC in each 8kb block, then search for E at the end of one block and XEC at the beginning of the next one, and son on.

Unfortunatelly, I don't have the time to work on it now but I will do it.

Peace,

Joseph Gama

jgama Mr or Mrs. 500 Points: 509 More actions · Answer 8

Hi Razvan,

I finally got the code and I will post it soon, the problem was solved.

Peace

Joseph Gama