Class: Ddr::Antivirus::ClamdScannerAdapter

Inherits:
ScannerAdapter show all
Defined in:
lib/ddr/antivirus/adapters/clamd_scanner_adapter.rb

Overview

Adapter for clamd client (clamdscan)

Constant Summary collapse

SCANNER = 
"clamdscan".freeze
CONFIG = 
"clamconf".freeze
MAX_FILE_SIZE_RE = 
Regexp.new('^MaxFileSize = "(\d+)"')

Instance Method Summary collapse

Instance Method Details

#clamdscan(path) ⇒ Object 



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# File 'lib/ddr/antivirus/adapters/clamd_scanner_adapter.rb', line 28

def clamdscan(path)
  check_file_size(path) if max_file_size
  output = make_readable(path) do
    command "--fdpass", safe_path(path)
  end
  [ output, $?.exitstatus ]
end

#config ⇒ Object 



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# File 'lib/ddr/antivirus/adapters/clamd_scanner_adapter.rb', line 40

def config
  # If client and server are on separate hosts
  # attempt to read config may raise an exception.
  @config ||= `#{CONFIG}` rescue nil
end

#max_file_size ⇒ Object 



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# File 'lib/ddr/antivirus/adapters/clamd_scanner_adapter.rb', line 46

def max_file_size
  if m = MAX_FILE_SIZE_RE.match(config)
    m[1].to_i
  end
end

#scan(path) ⇒ Object 



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# File 'lib/ddr/antivirus/adapters/clamd_scanner_adapter.rb', line 15

def scan(path)
  output, exitcode = clamdscan(path)
  result = ScanResult.new(path, output, version: version, scanned_at: Time.now.utc)
  case exitcode
  when 0
    result
  when 1
    raise VirusFoundError.new(result)
  when 2
    raise ScannerError.new(result)
  end
end

#version ⇒ Object 



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# File 'lib/ddr/antivirus/adapters/clamd_scanner_adapter.rb', line 36

def version
  @version ||= command("-V").strip
end