Class: Hedra::CertificateChecker

Inherits:
Object
  • Object
show all
Defined in:
lib/hedra/certificate_checker.rb

Overview

Check SSL/TLS certificate validity and security

Constant Summary collapse

EXPIRY_WARNING_DAYS = 
30

Instance Method Summary collapse

Instance Method Details

#check(url) ⇒ Object 



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# File 'lib/hedra/certificate_checker.rb', line 12

def check(url)
  uri = URI.parse(url)
  return nil unless uri.scheme == 'https'

  findings = []
  cert_info = fetch_certificate(uri.host, uri.port || 443)

  return findings unless cert_info

  # Check expiry
  days_until_expiry = ((cert_info[:not_after] - Time.now) / 86_400).to_i
  if days_until_expiry.negative?
    findings << {
      header: 'ssl-certificate',
      issue: 'SSL certificate has expired',
      severity: :critical,
      recommended_fix: 'Renew SSL certificate immediately'
    }
  elsif days_until_expiry < EXPIRY_WARNING_DAYS
    findings << {
      header: 'ssl-certificate',
      issue: "SSL certificate expires in #{days_until_expiry} days",
      severity: :warning,
      recommended_fix: 'Renew SSL certificate soon'
    }
  end

  # Check signature algorithm
  if weak_signature_algorithm?(cert_info[:signature_algorithm])
    findings << {
      header: 'ssl-certificate',
      issue: "Weak signature algorithm: #{cert_info[:signature_algorithm]}",
      severity: :warning,
      recommended_fix: 'Use SHA256 or stronger'
    }
  end

  # Check key size
  if cert_info[:key_size] && cert_info[:key_size] < 2048
    findings << {
      header: 'ssl-certificate',
      issue: "Weak key size: #{cert_info[:key_size]} bits",
      severity: :critical,
      recommended_fix: 'Use at least 2048-bit RSA or 256-bit ECC'
    }
  end

  findings
rescue StandardError => e
  warn "Certificate check failed: #{e.message}"
  []
end