Class: TruthID::Client

Inherits:
Object
  • Object
show all
Defined in:
lib/truthid/client.rb

Constant Summary collapse

RPC_URLS = 
{
  "base-sepolia" => "https://sepolia.base.org",
  "base-mainnet" => "https://mainnet.base.org"
}.freeze

Instance Method Summary collapse

Constructor Details

#initialize(network: "base-mainnet", rpc_url: nil) ⇒ Client

Returns a new instance of Client.



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# File 'lib/truthid/client.rb', line 15

def initialize(network: "base-mainnet", rpc_url: nil)
  @network = network
  url = rpc_url || RPC_URLS.fetch(network)
  @rpc = Eth::Client.create(url)
  @devices = Eth::Contract.from_abi(
    name: "DeviceRegistry",
    address: Contracts::DEVICE_REGISTRY_ADDRESSES.fetch(network),
    abi: Contracts::DEVICE_REGISTRY_ABI
  )
  @sessions = Eth::Contract.from_abi(
    name: "SessionRegistry",
    address: Contracts::SESSION_REGISTRY_ADDRESSES.fetch(network),
    abi: Contracts::SESSION_REGISTRY_ABI
  )
end

Instance Method Details

#check_device_status(device_pub_key) ⇒ Object 



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# File 'lib/truthid/client.rb', line 128

def check_device_status(device_pub_key)
  device = @rpc.call(@devices, "getDevice", device_pub_key)
  return DeviceStatus.new(exists: false, active: false) unless device[5] # exists

  DeviceStatus.new(
    exists:      true,
    active:      !device[4], # revoked → active é o inverso
    label:       device[2],
    identity_id: device[0],
    added_at:    Time.at(device[3]).utc
  )
end

#compute_smart_account_address(ledger_address, index: 0) ⇒ Object

Prevê o endereço da smart account (controller) pra uma owner key via CREATE2, antes da conta ser de fato deployada on-chain — computação local pura, sem chamada de rede. Ver smart_account.rb pro algoritmo.



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# File 'lib/truthid/client.rb', line 124

def (ledger_address, index: 0)
  TruthID.(ledger_address, network: @network, index: index)
end

#create_challenge(origin) ⇒ Object 



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# File 'lib/truthid/client.rb', line 31

def create_challenge(origin)
  AuthChallenge.new(
    type:      "challenge",
    nonce:     SecureRandom.uuid,
    issued_at: (Time.now.to_f * 1000).to_i,
    origin:    origin
  )
end

#verify_auth_response(challenge, response, ttl_ms: 30_000) ⇒ Object 



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# File 'lib/truthid/client.rb', line 40

def verify_auth_response(challenge, response, ttl_ms: 30_000)
  # 1. Usuário recusou
  unless response.approved
    return VerifyAuthResult.new(valid: false, reason: "User rejected the login request")
  end

  # 2. TTL expirado
  now_ms = (Time.now.to_f * 1000).to_i
  if now_ms - challenge.issued_at > ttl_ms
    return VerifyAuthResult.new(valid: false, reason: "Challenge expired")
  end

  # 3. Nonce bate com o challenge original
  if challenge.nonce != response.nonce
    return VerifyAuthResult.new(valid: false, reason: "Nonce mismatch")
  end

  # 4. Verificar assinatura
  # JSON.generate já produz JSON compacto (sem espaços) — compatível com Dart e JS
  message = JSON.generate(challenge.to_h)
  begin
    # personal_recover devolve a chave pública descomprimida (65 bytes),
    # não um endereço — precisa do passo extra de derivar o endereço
    # (keccak256 da chave pública) antes de comparar. Achado real: sem
    # esse passo, essa comparação nunca batia com nenhum device_address
    # de verdade, rejeitando toda assinatura válida.
    public_key = Eth::Signature.personal_recover(message, response.signature)
    signer = Eth::Util.public_key_to_address(public_key).to_s
  rescue => e
    return VerifyAuthResult.new(valid: false, reason: "Invalid signature format")
  end

  if signer.downcase != response.device_address.downcase
    return VerifyAuthResult.new(valid: false, reason: "Signature does not match device address")
  end

  # 5. Device ativo na blockchain
  is_active = @rpc.call(@devices, "isDeviceActive", response.device_address)
  unless is_active
    return VerifyAuthResult.new(valid: false, reason: "Device is not active or has been revoked")
  end

  # 6. Buscar identityId do device
  device = @rpc.call(@devices, "getDevice", response.device_address)

  VerifyAuthResult.new(
    valid:          true,
    identity_id:    device[0],
    device_address: response.device_address
  )
end

#verify_session(session_hash) ⇒ Object 



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# File 'lib/truthid/client.rb', line 103

def verify_session(session_hash)
  # bytes32: converte hex string → 32 bytes binários
  hash_bytes = [session_hash.delete_prefix("0x")].pack("H*")

  session = read_session(hash_bytes)
  return SessionInfo.new(exists: false, revoked: false) if session.nil?

  revoked = @rpc.call(@sessions, "isSessionRevoked", hash_bytes)

  SessionInfo.new(
    exists:       true,
    revoked:      revoked,
    identity_id:  session[0],
    device_pub_key: session[1],
    created_at:   Time.at(session[2]).utc
  )
end