Base class for the interface to an external virus scanner. More...

Inheritance diagram for ilVirusScanner:

Collaboration diagram for ilVirusScanner:

Public Member Functions
	ilVirusScanner ($a_scancommand, $a_cleancommand)
	Constructor public. More...

	scanBuffer ($buffer)

	scanFile ($a_filepath, $a_origname="")
	scan a file for viruses More...

	cleanFile ($a_filepath, $a_origname="")
	clean an infected file More...

	fileCleaned ()
	returns wether file has been cleaned successfully or not More...

	logScanResult ()
	write the result of the last scan to the log More...

	logCleanResult ()
	write the result of the last clean to the log More...

	getScanResult ()
	get the pure output of the external scan More...

	getCleanResult ()
	get the pure output of the external scan More...

	getScanMessage ()
	get a located message with the result from the last scan More...

	getCleanMessage ()
	get a located message with the result from the last clean More...

	getScanZipFiles ()
	get info if class can scan ZIP files More...

Data Fields
	$type

	$scanZipFiles

	$scanCommand

	$cleanCommand

	$scanFilePath

	$scanFileOrigName

	$cleanFilePath

	$cleanFileOrigName

	$scanFileIsInfected

	$cleanFileIsCleaned

	$scanResult

	$cleanResult

	$ilias

	$lng

	$log

Protected Member Functions
	scanFileFromBuffer ($buffer)

	createBufferFile ($buffer)

	removeBufferFile ($bufferFile)

Detailed Description

Base class for the interface to an external virus scanner.

This class is abstract and needs to be extended for actual scanners Only scanFile() and cleanFile() need to be redefined Child Constructors should call ilVirusScanner() Scan and Clean are independent and may work on different files Logging and message generation are generic

Author: Fred Neumann fred..nosp@m.neum.nosp@m.ann@f.nosp@m.im.u.nosp@m.ni-er.nosp@m.lang.nosp@m.en.de

Version: $Id$

Definition at line 18 of file class.ilVirusScanner.php.

Member Function Documentation

◆ cleanFile()

ilVirusScanner::cleanFile	(	$a_filepath,
		$a_origname = `""`
	)

clean an infected file

needs to be redefined in child classes here it simulates a clean "cleanable.txt" is expected to be cleanable

Parameters

string	path of file to check
string	original name of the file to clean

Returns: string clean message (empty if not cleaned) public

Definition at line 242 of file class.ilVirusScanner.php.

References $cleanResult, and logCleanResult().

         {
                 // This function needs to be redefined in child classes
                 // It should:
                 // - call the external cleaner
                 // - set cleanFilePath to a_filepath
                 // - set cleanFileOrigName to a_origname
                 // - set cleanFileIsCleaned according the clean result
                 // - set cleanResult to the cleaner output message
                 // - call logCleanResult in any case
                 // - return the output message, if file is cleaned
                 // - return an empty string, if file is not cleaned
 
                 $this->cleanFilePath = $a_filepath;
                 $this->cleanFileOrigName = $a_origname;
 
                 if ($a_origname == "cleanable.txt")
                 {
                         $this->cleanFileIsCleaned = true;
                         $this->cleanResult =
                                 "FILE CLEANED: [". $a_filepath. "] (VIRUS: simulated)";
                         $this->logCleanResult();
                         return $this->cleanResult;
                 }
                 else
                 {
                         $this->cleanFileIsCleaned = false;
                         $this->cleanResult =
                                 "FILE NOT CLEANED: [". $a_filepath. "] (VIRUS: simulated)";
                         $this->logCleanResult();
                         return "";
                 }
         }

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◆ createBufferFile()

ilVirusScanner::createBufferFile ( $buffer )

protected

Parameters

string $buffer (any data, binary)

Returns: string $bufferFile

Definition at line 170 of file class.ilVirusScanner.php.

References ilUtil\ilTempnam().

Referenced by scanFileFromBuffer().

         {
                 $bufferFile = ilUtil::ilTempnam();
                 file_put_contents($bufferFile, $buffer);
                 return $bufferFile;
         }

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◆ fileCleaned()

ilVirusScanner::fileCleaned ( )

returns wether file has been cleaned successfully or not

Returns: boolean true, if last clean operation has been successful

Definition at line 281 of file class.ilVirusScanner.php.

References $cleanFileIsCleaned.

         {
                 return $this->cleanFileIsCleaned;
         }

◆ getCleanMessage()

ilVirusScanner::getCleanMessage ( )

get a located message with the result from the last clean

Returns: string public

Definition at line 375 of file class.ilVirusScanner.php.

References $cleanFileOrigName, and $ret.

         {
                 if ($this->cleanFileIsCleaned)
                 {
                         $ret = sprintf($this->lng->txt("virus_cleaned"), $this->cleanFileOrigName);
                 }
                 else
                 {
                         $ret = sprintf($this->lng->txt("virus_not_cleaned"),$this->cleanFileOrigName);
                 }
 
                 if ($this->cleanResult)
                 {
                         $ret .= " ". $this->lng->txt("virus_clean_message")
                                  . "<br />"
                                  . str_replace($this->cleanFilePath, $this->cleanFileOrigName,
                                                                 nl2br($this->cleanResult));
                 }
                 return $ret;
         }

◆ getCleanResult()

ilVirusScanner::getCleanResult ( )

get the pure output of the external scan

Returns: string public

Definition at line 337 of file class.ilVirusScanner.php.

References $cleanResult.

         {
                 return $this->cleanResult;
         }

◆ getScanMessage()

ilVirusScanner::getScanMessage ( )

get a located message with the result from the last scan

Returns: string public

Definition at line 348 of file class.ilVirusScanner.php.

References $ret, and $scanFileOrigName.

         {
                 if ($this->scanFileIsInfected)
                 {
                         $ret = sprintf($this->lng->txt("virus_infected"), $this->scanFileOrigName);
                 }
                 else
                 {
                         $ret = sprintf($this->lng->txt("virus_not_infected"),$this->scanFileOrigName);
                 }
                 
                 if ($this->scanResult)
                 {
                         $ret .= " ". $this->lng->txt("virus_scan_message")
                                  . "<br />"
                                  . str_replace($this->scanFilePath, $this->scanFileOrigName,
                                                                 nl2br($this->scanResult));
                 }
                 return $ret;
         }

◆ getScanResult()

ilVirusScanner::getScanResult ( )

get the pure output of the external scan

Returns: string public

Definition at line 326 of file class.ilVirusScanner.php.

References $scanResult.

         {
                 return $this->scanResult;
         }

◆ getScanZipFiles()

ilVirusScanner::getScanZipFiles ( )

get info if class can scan ZIP files

Returns: boolean public

Definition at line 402 of file class.ilVirusScanner.php.

References $scanZipFiles.

         {
                 return $this->scanZipFiles;
         }

◆ ilVirusScanner()

ilVirusScanner::ilVirusScanner	(	$a_scancommand,
		$a_cleancommand
	)

Constructor public.

Definition at line 131 of file class.ilVirusScanner.php.

References $ilias, $lng, and $log.

Referenced by ilVirusScannerAntiVir\ilVirusScannerAntivir(), ilVirusScannerClamAV\ilVirusScannerClamAV(), and ilVirusScannerSophos\ilVirusScannerSophos().

         {
                 global $ilias, $lng, $log;
 
                 $this->ilias = & $ilias;
                 $this->lng = & $lng;
                 $this->log = & $log;
                 $this->scanCommand = $a_scancommand;
                 $this->cleanCommand = $a_cleancommand;
                 
                 $this->type = "simulate";
                 $this->scanZipFiles = false;
         }

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◆ logCleanResult()

ilVirusScanner::logCleanResult ( )

write the result of the last clean to the log

public

Definition at line 308 of file class.ilVirusScanner.php.

Referenced by ilVirusScannerSophos\cleanFile(), and cleanFile().

         {
                 $mess = "Virus Cleaner (". $this->type. ")";
                 if ($this->cleanFileOrigName)
                 {
                         $mess .= " (File ". $this->cleanFileOrigName. ")";
                 }
                 $mess .= ": " . ereg_replace("(\r|\n)+", "; ", $this->cleanResult);
 
                 $this->log->write($mess);
         }

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◆ logScanResult()

ilVirusScanner::logScanResult ( )

write the result of the last scan to the log

public

Definition at line 291 of file class.ilVirusScanner.php.

Referenced by ilVirusScannerAntiVir\scanFile(), ilVirusScannerSophos\scanFile(), ilVirusScannerClamAV\scanFile(), and scanFile().

         {
                 $mess = "Virus Scanner (". $this->type. ")";
                 if ($this->scanFileOrigName)
                 {
                         $mess .= " (File " . $this->scanFileOrigName . ")";
                 }
                 $mess .= ": " . ereg_replace("(\r|\n)+", "; ", $this->scanResult);
 
                 $this->log->write($mess);
         }

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◆ removeBufferFile()

ilVirusScanner::removeBufferFile ( $bufferFile )

protected

Parameters

string $bufferFile

Definition at line 180 of file class.ilVirusScanner.php.

Referenced by scanFileFromBuffer().

         {
                 unlink($bufferFile);
         }

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◆ scanBuffer()

ilVirusScanner::scanBuffer ( $buffer )

Parameters

string $buffer (any data, binary)

Returns: bool $infected

Definition at line 149 of file class.ilVirusScanner.php.

References scanFileFromBuffer().

         {
                 return $this->scanFileFromBuffer($buffer);
         }

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◆ scanFile()

ilVirusScanner::scanFile	(	$a_filepath,
		$a_origname = `""`
	)

scan a file for viruses

needs to be redefined in child classes here it simulates a scan "infected.txt" or "cleanable.txt" are expected to be infected

Parameters

string	path of file to scan
string	original name of the file to scan

Returns: string virus message (empty if not infected) public

Definition at line 197 of file class.ilVirusScanner.php.

References $scanResult, and logScanResult().

Referenced by scanFileFromBuffer().

         {
                 // This function needs to be redefined in child classes.
                 // It should:
                 // - call the external scanner for a_filepath
                 // - set scanFilePath to a_filepath
                 // - set scanFileOrigName to a_origname
                 // - set scanFileIsInfected according the scan result
                 // - set scanResult to the scanner output message
                 // - call logScanResult() if file is infected
                 // - return the output message, if file is infected
                 // - return an empty string, if file is not infected
                 
                 $this->scanFilePath = $a_filepath;
                 $this->scanFileOrigName = $a_origname;
                 
                 if ($a_origname == "infected.txt" or $a_origname == "cleanable.txt")
                 {
                         $this->scanFileIsInfected = true;
                         $this->scanResult =
                                 "FILE INFECTED: [". $a_filepath. "] (VIRUS: simulated)";
                         $this->logScanResult();
                         return $this->scanResult;
                 }
                 else
                 {
                         $this->scanFileIsInfected = false;
                         $this->scanResult = "";
                         return "";
                 }
         }

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◆ scanFileFromBuffer()

ilVirusScanner::scanFileFromBuffer ( $buffer )

protected

Parameters

string $buffer (any data, binary)

Returns: bool $infected

Definition at line 158 of file class.ilVirusScanner.php.

References createBufferFile(), removeBufferFile(), and scanFile().

Referenced by ilVirusScannerClamAV\scanBuffer(), and scanBuffer().

         {
                 $bufferFile = $this->createBufferFile($buffer);
                 $isInfected = $this->scanFile($bufferFile);
                 $this->removeBufferFile($bufferFile);
                 return $isInfected;
         }

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Field Documentation

◆ $cleanCommand

ilVirusScanner::$cleanCommand

Definition at line 48 of file class.ilVirusScanner.php.

◆ $cleanFileIsCleaned

ilVirusScanner::$cleanFileIsCleaned

Definition at line 90 of file class.ilVirusScanner.php.

Referenced by fileCleaned().

◆ $cleanFileOrigName

ilVirusScanner::$cleanFileOrigName

Definition at line 76 of file class.ilVirusScanner.php.

Referenced by getCleanMessage().

◆ $cleanFilePath

ilVirusScanner::$cleanFilePath

Definition at line 69 of file class.ilVirusScanner.php.

◆ $cleanResult

ilVirusScanner::$cleanResult

Definition at line 104 of file class.ilVirusScanner.php.

Referenced by ilVirusScannerSophos\cleanFile(), cleanFile(), and getCleanResult().

◆ $ilias

ilVirusScanner::$ilias

Definition at line 111 of file class.ilVirusScanner.php.

Referenced by ilVirusScanner().

◆ $lng

ilVirusScanner::$lng

Definition at line 118 of file class.ilVirusScanner.php.

Referenced by ilVirusScanner().

◆ $log

ilVirusScanner::$log

Definition at line 125 of file class.ilVirusScanner.php.

Referenced by ilVirusScanner().

◆ $scanCommand

ilVirusScanner::$scanCommand

Definition at line 41 of file class.ilVirusScanner.php.

◆ $scanFileIsInfected

ilVirusScanner::$scanFileIsInfected

Definition at line 83 of file class.ilVirusScanner.php.

◆ $scanFileOrigName

ilVirusScanner::$scanFileOrigName

Definition at line 62 of file class.ilVirusScanner.php.

Referenced by getScanMessage().

◆ $scanFilePath

ilVirusScanner::$scanFilePath

Definition at line 55 of file class.ilVirusScanner.php.

◆ $scanResult

ilVirusScanner::$scanResult

Definition at line 97 of file class.ilVirusScanner.php.

Referenced by getScanResult(), ilVirusScannerSophos\scanFile(), ilVirusScannerAntiVir\scanFile(), ilVirusScannerClamAV\scanFile(), and scanFile().

◆ $scanZipFiles

ilVirusScanner::$scanZipFiles

Definition at line 34 of file class.ilVirusScanner.php.

Referenced by getScanZipFiles().

◆ $type

ilVirusScanner::$type

Definition at line 26 of file class.ilVirusScanner.php.

The documentation for this class was generated from the following file:

Services/VirusScanner/classes/class.ilVirusScanner.php

Public Member Functions

Data Fields

Protected Member Functions

Detailed Description

Member Function Documentation

◆ cleanFile()

◆ createBufferFile()

◆ fileCleaned()

◆ getCleanMessage()

◆ getCleanResult()

◆ getScanMessage()

◆ getScanResult()

◆ getScanZipFiles()

◆ ilVirusScanner()

◆ logCleanResult()

◆ logScanResult()

◆ removeBufferFile()

◆ scanBuffer()

◆ scanFile()

◆ scanFileFromBuffer()

Field Documentation

◆ $cleanCommand

◆ $cleanFileIsCleaned

◆ $cleanFileOrigName

◆ $cleanFilePath

◆ $cleanResult

◆ $ilias

◆ $lng

◆ $log

◆ $scanCommand

◆ $scanFileIsInfected

◆ $scanFileOrigName

◆ $scanFilePath

◆ $scanResult

◆ $scanZipFiles

◆ $type