Module: BetterAuth::Passkey::Routes::Authentication

Defined in:
lib/better_auth/passkey/routes/authentication.rb

Class Method Summary collapse

Class Method Details

.generate_passkey_authentication_options_endpoint(config) ⇒ Object 



12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
 
# File 'lib/better_auth/passkey/routes/authentication.rb', line 12

def generate_passkey_authentication_options_endpoint(config)
  Endpoint.new(path: "/passkey/generate-authenticate-options", method: "GET") do |ctx|
    session = BetterAuth::Routes.current_session(ctx, allow_nil: true)
    relying_party = Utils.relying_party(config, ctx)
    passkeys = if session
      ctx.context.adapter.find_many(model: "passkey", where: [{field: "userId", value: session.fetch(:user).fetch("id")}])
    else
      []
    end
    get_options = {
      extensions: Utils.resolve_extensions(config.dig(:authentication, :extensions), ctx),
      relying_party: relying_party
    }
    get_options[:allow] = passkeys.map { |passkey| Credentials.credential_id(passkey) } if passkeys.any?
    options = WebAuthn::Credential.options_for_get(**get_options)
    Challenges.store_challenge(ctx, config, options.challenge, session ? session.fetch(:user).fetch("id") : "")
    payload = options.as_json.merge(userVerification: "preferred")
    payload.delete(:extensions) if payload[:extensions].nil? || payload[:extensions] == {}
    payload.delete("extensions") if payload["extensions"].nil? || payload["extensions"] == {}
    if passkeys.any?
      payload[:allowCredentials] = passkeys.map { |passkey| Credentials.credential_descriptor(passkey) }
    else
      payload.delete(:allowCredentials)
      payload.delete("allowCredentials")
    end
    ctx.json(payload)
  end
end

.verify_passkey_authentication_endpoint(config) ⇒ Object 



41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
 
# File 'lib/better_auth/passkey/routes/authentication.rb', line 41

def verify_passkey_authentication_endpoint(config)
  Endpoint.new(path: "/passkey/verify-authentication", method: "POST") do |ctx|
    body = Utils.normalize_hash(ctx.body)
    Utils.require_key!(body, :response)
    origin = Utils.origin(config, ctx)
    raise APIError.new("BAD_REQUEST", message: "origin missing") if origin.to_s.empty?

    verification_token = Challenges.challenge_token(ctx, config)
    raise APIError.new("BAD_REQUEST", message: ErrorCodes::PASSKEY_ERROR_CODES.fetch("CHALLENGE_NOT_FOUND")) unless verification_token

    challenge = Challenges.find_challenge(ctx, verification_token)
    raise APIError.new("BAD_REQUEST", message: ErrorCodes::PASSKEY_ERROR_CODES.fetch("CHALLENGE_NOT_FOUND")) unless challenge

    response = Credentials.webauthn_response(body[:response])
    credential_id = response.fetch("id")
    passkey = ctx.context.adapter.find_one(model: "passkey", where: [{field: "credentialID", value: credential_id}])
    raise APIError.new("UNAUTHORIZED", message: ErrorCodes::PASSKEY_ERROR_CODES.fetch("PASSKEY_NOT_FOUND")) unless passkey

    relying_party = Utils.relying_party(config, ctx, origin: origin)
    credential = WebAuthn::Credential.from_get(response, relying_party: relying_party)
    credential.verify(
      challenge.fetch("expectedChallenge"),
      public_key: Base64.strict_decode64(passkey.fetch("publicKey")),
      sign_count: passkey.fetch("counter").to_i,
      user_verification: false
    )
    Utils.call_callback(config.dig(:authentication, :after_verification), {
      ctx: ctx,
      verification: credential,
      client_data: response
    })
    ctx.context.adapter.update(
      model: "passkey",
      where: [{field: "id", value: passkey.fetch("id")}],
      update: {counter: credential.sign_count}
    )
    session = ctx.context.internal_adapter.create_session(passkey.fetch("userId"))
    raise APIError.new("INTERNAL_SERVER_ERROR", message: ErrorCodes::PASSKEY_ERROR_CODES.fetch("UNABLE_TO_CREATE_SESSION")) unless session

    user = ctx.context.internal_adapter.find_user_by_id(passkey.fetch("userId"))
    raise APIError.new("INTERNAL_SERVER_ERROR", message: "User not found") unless user

    Cookies.set_session_cookie(ctx, {session: session, user: user})
    ctx.context.internal_adapter.delete_verification_by_identifier(verification_token)
    ctx.json({session: session, user: user})
  rescue WebAuthn::Error, ArgumentError => error
    ctx.context.logger&.error("Failed to verify authentication", error)
    raise APIError.new("BAD_REQUEST", message: ErrorCodes::PASSKEY_ERROR_CODES.fetch("AUTHENTICATION_FAILED"))
  end
end