-- ============================================================================
-- 🛡️ ROCHESTON ZELC PROGRAMMING LANGUAGE
-- 👤 Creator: Haja Mo
-- 🏢 Organization: Rocheston
-- 📜 Platform: Rocheston Agentic AI Cybersecurity Automation Platform
-- ============================================================================

-- Playbook: Strongly Typed IPv6 Zero-Day Containment
-- Intent: Demonstrates the native 'IPv6' data type. Threat actors often use IPv6 to bypass legacy IPv4-only firewall rules. This playbook explicitly validates IPv6 syntax, checks if it is a globally routable address, and executes a block at the perimeter.
-- Infrastructure: SIEM, Dual-Stack Perimeter Firewall, Slack, Rosecoin.
-- Note: The AI uses the IPv6 type to ensure that variations in notation (compressed vs. expanded) are mathematically normalized before sending the block command to the firewall.

package soc.advanced_typing
use siem, firewall, slack, ticket

-- ============================================================================
-- 1. CONFIGURATION GOVERNORS (Using Domain Types)
-- ============================================================================
⚙️ keep MIN_BLOCK_SEVERITY: Severity = Severity.HIGH
⚙️ keep SOC_CHANNEL: String = "#soc-ipv6-alerts"

-- ============================================================================
-- 2. HELPER FUNCTIONS (Read-Only Zone)
-- ============================================================================
-- We define exactly what types this function accepts
⭕️ define evaluate_ipv6_threat(attacker_v6: IPv6, alert_level: Severity) -> Boolean
  
  -- Gate: Only block if the severity meets our threshold
  ⚠️ when alert_level >= MIN_BLOCK_SEVERITY
    
    -- NATIVE TYPE METHOD: We only want to block Global Unicast addresses.
    -- We don't want to accidentally block local loopback (::1) or link-local (fe80::)
    ⚠️ when attacker_v6.is_global_unicast() == true
      return true
    🔴 end
    
  🔴 end
  
  return false
🔴 end

-- ============================================================================
-- 3. THE ENTRY POINT (The Check Block)
-- ============================================================================
🔥 check TypedIPv6Containment
  
  -- Trigger Gate: Listens for next-generation dual-stack alerts from the SIEM
  ⚠️ when siem_ipv6_threat_detected
    
    -- Type validation happens instantly. If the SIEM accidentally passes an IPv4 
    -- address or a malformed IPv6 string here, the playbook safely aborts.
    🔹 set threat_ip: IPv6       = event.source_ip
    🔹 set target_host: IPv4     = event.destination_ip
    🔹 set vuln_id: CVE          = event.cve_tag
    🔹 set alert_level: Severity = event.threat_level
    
    -- Evaluate the context using our strongly-typed variables
    🔹 set requires_containment: Boolean = evaluate_ipv6_threat(threat_ip, alert_level)

    -- Gate: Drop the hammer if the threat passes the evaluation
    ⚠️ when requires_containment == true
      
      🚨 alert high message "IPV6 THREAT DETECTED: {alert_level} exploit attempt for {vuln_id} from {threat_ip.compressed()}. Initiating perimeter block."

      -- ============================================================================
      -- 4. THE KINETIC ZONE (do ... end)
      -- ============================================================================
      ⚡ do
        
        -- Action 1: Block the validated IPv6 address at the perimeter.
        -- The compiler knows 'firewall block ip' accepts both IPv4 and IPv6 types polymorphically.
        -- We use a native method .expanded() to ensure the firewall gets the full 128-bit string.
        ☁️ firewall block ip threat_ip.expanded()
        
        -- Action 2: Notify the SOC
        📡 notify slack channel SOC_CHANNEL message "🚨 *Dual-Stack Attack Contained* \n*CVE:* `{vuln_id}` \n*Attacker (IPv6):* `{threat_ip.compressed()}` \n*Target (IPv4):* `{target_host}`. \nIPv6 address successfully blocked at the perimeter."
        
        -- Open a strongly-typed ticket
        ✨ ticket open title "P2: IPv6 Exploit Blocked - {threat_ip.compressed()}" priority "p2" details {
          cve_identifier: vuln_id,
          source_ipv6: threat_ip.expanded(),
          target_ipv4: target_host,
          status: "IPv6 Perimeter Block Applied"
        }
        
        -- ============================================================================
        -- 5. EVIDENCE & PROOF
        -- ============================================================================
        📝 evidence record "Typed_IPv6_Contained" details {
          attacker_v6: threat_ip.expanded(),
          vulnerability: vuln_id,
          action: "IPV6_FIREWALL_BLOCK"
        }
        
        -- Anchor the cryptographic receipt to the blockchain
        ⛓️ rosecoin anchor evidence_pack "latest"
        
      🔴 end
      
    -- Fallback: What if it was just link-local noise?
    ⭕️ otherwise
      
      🚨 alert info message "IPv6 activity from {threat_ip.compressed()} ignored (Not Global Unicast or below severity threshold)."
      
    🔴 end
  🔴 end
🔴 end