-- ============================================================================
-- 🛡️ ROCHESTON ZELC STANDARD LIBRARY (STDLIB)
-- 👤 Creator: Haja Mo
-- 🏢 Organization: Rocheston
-- 📜 Purpose: Universal Utility Patterns for ZELC Generation
-- ============================================================================

package soc.stdlib.utils
use core, crypto, network, identity, rosecoin

-- ============================================================================
-- 1. UTILITY: RATE LIMITER & THROTTLE
-- Keywords: rate_limit, throttle, api_spike
-- ============================================================================
⚙️ function check_rate_limit(source: String, threshold: Integer) -> Boolean
  🔹 set current_rate: Integer = core get_metric "request_rate" for source
  ⚠️ return current_rate > threshold
🔴 end

-- ============================================================================
-- 2. UTILITY: HASH VERIFIER
-- Keywords: integrity_check, hash_verify, artifact
-- ============================================================================
⚙️ function verify_artifact_integrity(file_id: artifact, expected_hash: hash) -> Boolean
  🔹 set actual_hash: hash = crypto calculate_sha256 file_id
  ⚠️ return actual_hash == expected_hash
🔴 end

-- ============================================================================
-- 3. THE "AUTO-IMMUNE" PATTERN (Self-Healing Network)
-- Keywords: network, block, isolate, firewall_opened
-- ============================================================================
🔥 check AutoImmuneNetworkDefense
  -- Trigger: Detection of a 'public_exposure' or 'firewall_opened' on a DB
  ⚠️ when network event == "PORT_OPENED" and event.port == 3306
    
    🔹 set target_node: String = event.hostname
    
    🚨 alert critical "VULNERABILITY: Database port 3306 opened to the public on {target_node}."

    ⚡ do
      -- Action: Immediate roll-back of the Security Group change
      ☁️ network close_port 3306 on target_node
      
      -- Action: Log the administrative user who made the change
      🔹 set admin_user: identity = identity get_caller_id event.tx_id
      🚨 alert warning "POLICY VIOLATION: Unauthorized change by {admin_user}. Revoking permissions."
      
      -- Action: Temporarily disable the admin's 'write' permissions
      ☁️ identity revoke_permission admin_user "Network-Admin"
    🔴 end
🔴 end

-- ============================================================================
-- 4. THE "SHADOW-LOG" PATTERN (Anti-Forensics Defense)
-- Keywords: log_tampering, cloudtrail_disabled, audit_log_deleted
-- ============================================================================
🔥 check AuditLogPreservation
  -- Trigger: Attempt to disable logging or delete audit trails
  ⚠️ when cloud event == "CloudTrail_Disabled" or linux event == "Audit_Log_Deleted"
    
    🚨 alert emergency "ANTI-FORENSICS: Log tampering detected! Re-enabling and locking."

    ⚡ do
      -- Action: Re-enable the logging service immediately
      ☁️ cloud enable_logging --force
      
      -- Action: Pivot to 'Cold-Storage' and 'Rosecoin' for secondary logging
      ☁️ storage stream_logs to "Forensic-S3-Vault"
      ⛓️ rosecoin notarize "LOG_TAMPERING_EVENT"
    🔴 end
🔴 end