Module: BetterAuth::Plugins::OAuthProtocol

Defined in:
lib/better_auth/plugins/oauth_protocol.rb

Constant Summary collapse

AUTH_CODE_GRANT = 
"authorization_code"
REFRESH_GRANT = 
"refresh_token"
CLIENT_CREDENTIALS_GRANT = 
"client_credentials"
DEVICE_CODE_GRANT = 
"urn:ietf:params:oauth:grant-type:device_code"

Class Method Summary collapse

Class Method Details

.apply_prefix(value, prefix, kind) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 694

def apply_prefix(value, prefix, kind)
  "#{token_prefix(prefix, kind)}#{value}"
end

.authenticate_client!(ctx, model, store_client_secret: "plain", prefix: {}) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 316

def authenticate_client!(ctx, model, store_client_secret: "plain", prefix: {})
  body = stringify_keys(ctx.body || {})
  client_id = body["client_id"]
  client_secret = strip_prefix(body["client_secret"], prefix, :client_secret) || body["client_secret"]

  authorization = ctx.headers["authorization"]
  if authorization.to_s.start_with?("Basic ") && client_id.to_s.empty?
    decoded = Base64.decode64(authorization.delete_prefix("Basic "))
    client_id, client_secret = decoded.split(":", 2)
  end

  client = find_client(ctx, model, client_id)
  raise APIError.new("UNAUTHORIZED", message: "invalid_client") unless client

  client_data = stringify_keys(client)
  raise APIError.new("UNAUTHORIZED", message: "invalid_client") if client_data["disabled"]

  method = client_data["tokenEndpointAuthMethod"] || "client_secret_basic"
  if method == "none"
    raise APIError.new("UNAUTHORIZED", message: "invalid_client") unless client_secret.to_s.empty?
    return client
  end
  if method != "none" && !verify_client_secret(ctx, stringify_keys(client)["clientSecret"], client_secret, store_client_secret)
    raise APIError.new("UNAUTHORIZED", message: "invalid_client")
  end

  client
rescue ArgumentError
  raise APIError.new("UNAUTHORIZED", message: "invalid_client")
end

.build_jwt_access_token(ctx, client, user, session, scope, audience, issuer_value, expires_at, custom_claims, reference_id: nil, use_jwt_plugin: false) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 549

def build_jwt_access_token(ctx, client, user, session, scope, audience, issuer_value, expires_at, custom_claims, reference_id: nil, use_jwt_plugin: false)
  scopes = parse_scopes(scope)
  extra = if custom_claims.respond_to?(:call)
    custom_claims.call({user: user.empty? ? nil : user, scopes: scopes, resource: audience, reference_id: reference_id, metadata: stringify_keys(client["metadata"] || {})})
  end
  payload = (extra.is_a?(Hash) ? stringify_keys(extra) : {}).merge(
    "sub" => user["id"] || client["clientId"],
    "aud" => audience,
    "azp" => client["clientId"],
    "scope" => scope,
    "sid" => session["id"],
    "name" => user["name"],
    "email" => user["email"],
    "email_verified" => user["emailVerified"],
    "iss" => issuer_value,
    "iat" => Time.now.to_i,
    "exp" => expires_at.to_i
  ).compact
  if use_jwt_plugin
    signed = sign_oauth_jwt(ctx, payload, issuer: issuer_value, audience: audience)
    return signed if signed
  end

  ::JWT.encode(payload, ctx.context.secret, "HS256")
end

.client_logout_redirect_uris(client) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 95

def client_logout_redirect_uris(client)
  value = client["postLogoutRedirectUris"] || client[:post_logout_redirect_uris]
  return value if value.is_a?(Array)

  value.to_s.split(",").map(&:strip).reject(&:empty?)
end

.client_metadata(body, strip_unknown: false) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 268

def client_metadata(body, strip_unknown: false)
  metadata = stringify_keys(body["metadata"] || {})
  metadata = metadata.slice("software_id", "software_version", "software_statement", "tos_uri", "policy_uri") if strip_unknown
  metadata["software_id"] = body["software_id"] if body["software_id"]
  metadata["software_version"] = body["software_version"] if body["software_version"]
  metadata["software_statement"] = body["software_statement"] if body["software_statement"]
  metadata["tos_uri"] = body["tos_uri"] if body["tos_uri"]
  metadata["policy_uri"] = body["policy_uri"] if body["policy_uri"]
  metadata
end

.client_redirect_uris(client) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 88

def client_redirect_uris(client)
  value = client["redirectUris"] || client["redirectUrls"] || client[:redirect_uris] || client[:redirectUrls]
  return value if value.is_a?(Array)

  value.to_s.split(",").map(&:strip).reject(&:empty?)
end

.client_require_pkce(data) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 279

def client_require_pkce(data)
  data = stringify_keys(data || {})
  return data["requirePKCE"] if data.key?("requirePKCE")
  return data["requirePkce"] if data.key?("requirePkce")

  nil
end

.client_response(client, include_secret: true) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 183

def client_response(client, include_secret: true)
  data = stringify_keys(client || {})
  metadata = stringify_keys(data["metadata"] || {})
  response = {
    client_id: data["clientId"],
    client_name: data["name"],
    client_uri: data["uri"],
    logo_uri: data["icon"],
    redirect_uris: client_redirect_uris(data),
    post_logout_redirect_uris: client_logout_redirect_uris(data),
    token_endpoint_auth_method: data["tokenEndpointAuthMethod"] || "client_secret_basic",
    grant_types: data["grantTypes"] || [],
    response_types: data["responseTypes"] || [],
    scope: scope_string(data["scopes"]),
    public: !!data["public"],
    type: data["type"],
    user_id: data["userId"],
    reference_id: data["referenceId"],
    require_pkce: client_require_pkce(data),
    subject_type: data["subjectType"],
    metadata: metadata,
    contacts: data["contacts"] || [],
    tos_uri: data["tos"],
    policy_uri: data["policy"],
    software_id: data["softwareId"],
    software_version: data["softwareVersion"],
    software_statement: data["softwareStatement"],
    client_secret_expires_at: data["clientSecretExpiresAt"]
  }
  response[:skip_consent] = true if data["skipConsent"]
  metadata.each { |key, value| response[key.to_sym] = value }
  response[:client_secret] = data["clientSecret"] if include_secret && data["clientSecret"]
  response.compact
end

.consume_code!(store, code, client_id:, redirect_uri:, code_verifier: nil) ⇒ Object

Raises:



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 362

def consume_code!(store, code, client_id:, redirect_uri:, code_verifier: nil)
  data = store[:codes].delete(code.to_s)
  raise APIError.new("BAD_REQUEST", message: "invalid_grant") unless data
  raise APIError.new("BAD_REQUEST", message: "invalid_grant") if data[:expires_at] <= Time.now
  raise APIError.new("BAD_REQUEST", message: "invalid_grant") unless data[:client_id] == client_id.to_s
  raise APIError.new("BAD_REQUEST", message: "invalid_grant") unless data[:redirect_uri] == redirect_uri.to_s
  if data[:code_challenge]
    verify_pkce!(data, code_verifier)
  elsif !code_verifier.to_s.empty?
    raise APIError.new("BAD_REQUEST", message: "invalid_grant")
  end

  data
end

.create_client(ctx, model:, body:, owner_session: nil, default_auth_method: "client_secret_basic", store_client_secret: "plain", unauthenticated: false, default_scopes: nil, allowed_scopes: nil, prefix: {}, dynamic_registration: false, admin: false, pairwise_secret: nil, strip_client_metadata: false, reference_id: nil) ⇒ Object

Raises:



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 102

def create_client(ctx, model:, body:, owner_session: nil, default_auth_method: "client_secret_basic", store_client_secret: "plain", unauthenticated: false, default_scopes: nil, allowed_scopes: nil, prefix: {}, dynamic_registration: false, admin: false, pairwise_secret: nil, strip_client_metadata: false, reference_id: nil)
  body = stringify_keys(body || {})
  requested_auth_method = body["token_endpoint_auth_method"] || default_auth_method
  validate_client_metadata_enums!(requested_auth_method, body)
  validate_admin_only_fields!(body, admin: admin)
  auth_method = unauthenticated ? "none" : requested_auth_method
  public_client = auth_method == "none"
  client_id = Crypto.random_string(32)
  client_secret = public_client ? nil : Crypto.random_string(32)
  redirects = Array(body["redirect_uris"]).map(&:to_s)
  raise APIError.new("BAD_REQUEST", message: "redirect_uris is required") if redirects.empty?
  redirects.each { |uri| validate_safe_url!(uri, field: "redirect_uris") }
  Array(body["post_logout_redirect_uris"]).map(&:to_s).each { |uri| validate_safe_url!(uri, field: "post_logout_redirect_uris") }

  grant_types = Array(body["grant_types"] || [AUTH_CODE_GRANT]).map(&:to_s)
  response_types = Array(body["response_types"] || ["code"]).map(&:to_s)
  validate_client_registration!(auth_method, grant_types, response_types, body, unauthenticated: unauthenticated, dynamic_registration: dynamic_registration)
  validate_pairwise_client!(body, redirects, pairwise_secret)

  scopes = parse_scopes(body["scope"] || body["scopes"])
  scopes = parse_scopes(default_scopes) if scopes.empty? && default_scopes
  allowed = parse_scopes(allowed_scopes)
  unless allowed.empty? || scopes.all? { |scope| allowed.include?(scope) }
    raise APIError.new("BAD_REQUEST", message: "invalid_scope")
  end

  metadata = client_metadata(body, strip_unknown: strip_client_metadata)
  metadata["software_id"] = body["software_id"] if body["software_id"]
  metadata["software_version"] = body["software_version"] if body["software_version"]
  metadata["software_statement"] = body["software_statement"] if body["software_statement"]
  metadata["tos_uri"] = body["tos_uri"] if body["tos_uri"]
  metadata["policy_uri"] = body["policy_uri"] if body["policy_uri"]
  require_pkce = body.key?("require_pkce") ? body["require_pkce"] : body["requirePKCE"]
  require_pkce = true if dynamic_registration && require_pkce.nil?

  client_type = if unauthenticated && public_client && body["type"] == "web"
    nil
  else
    body["type"] || (public_client ? nil : "web")
  end
  data = {
    "clientId" => client_id,
    "clientSecret" => client_secret ? store_client_secret_value(ctx, client_secret, store_client_secret) : nil,
    "public" => public_client,
    "type" => client_type,
    "name" => body["client_name"] || body["name"] || "OAuth Client",
    "icon" => body["logo_uri"],
    "uri" => body["client_uri"],
    "contacts" => Array(body["contacts"]).map(&:to_s),
    "tos" => body["tos_uri"],
    "policy" => body["policy_uri"],
    "softwareId" => body["software_id"] || metadata["software_id"],
    "softwareVersion" => body["software_version"] || metadata["software_version"],
    "softwareStatement" => body["software_statement"] || metadata["software_statement"],
    "redirectUris" => redirects,
    "redirectUrls" => redirects.join(","),
    "postLogoutRedirectUris" => Array(body["post_logout_redirect_uris"]).map(&:to_s),
    "clientSecretExpiresAt" => admin ? (body["client_secret_expires_at"] || 0) : nil,
    "tokenEndpointAuthMethod" => auth_method,
    "grantTypes" => grant_types,
    "responseTypes" => response_types,
    "scopes" => scopes,
    "skipConsent" => unauthenticated ? false : !!(body["skip_consent"] || body["skipConsent"]),
    "enableEndSession" => !!(body["enable_end_session"] || body["enableEndSession"]),
    "requirePKCE" => require_pkce,
    "subjectType" => body["subject_type"] || body["subjectType"],
    "metadata" => metadata,
    "disabled" => false
  }
  data["referenceId"] = reference_id if reference_id
  data["userId"] = owner_session[:user]["id"] if owner_session && !reference_id
  created = ctx.context.adapter.create(model: model, data: data)
  response = client_response(created).merge(
    client_secret: client_secret ? apply_prefix(client_secret, prefix, :client_secret) : nil,
    client_id_issued_at: Time.now.to_i
  ).compact
  response[:require_pkce] = require_pkce unless require_pkce.nil?
  response[:client_secret_expires_at] = 0 if client_secret
  response
end

.endpoint_base(ctx) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 36

def endpoint_base(ctx)
  ctx.context.base_url
end

.find_client(ctx, model, client_id) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 312

def find_client(ctx, model, client_id)
  ctx.context.adapter.find_one(model: model, where: [{field: "clientId", value: client_id.to_s}])
end

.find_token_by_hint(store, token, hint, prefix: {}) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 646

def find_token_by_hint(store, token, hint, prefix: {})
  access = -> { (value = strip_prefix(token, prefix, :access_token)) && store[:tokens][value] }
  refresh = -> { (value = strip_prefix(token, prefix, :refresh_token)) && store[:refresh_tokens][value] }

  case hint.to_s
  when "access_token"
    access.call
  when "refresh_token"
    refresh.call
  else
    access.call || refresh.call
  end
end

.id_token(user, client_id, issuer_value, audience, ctx: nil, signer: nil, session_id: nil, include_sid: false, nonce: nil, auth_time: nil, custom_claims: nil, scopes: [], client: {}, filter_claims_by_scope: false, expires_in: 3600, use_jwt_plugin: false) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 721

def id_token(user, client_id, issuer_value, audience, ctx: nil, signer: nil, session_id: nil, include_sid: false, nonce: nil, auth_time: nil, custom_claims: nil, scopes: [], client: {}, filter_claims_by_scope: false, expires_in: 3600, use_jwt_plugin: false)
  requested_scopes = parse_scopes(scopes)
  payload = {
    sub: user["id"],
    iss: issuer_value,
    aud: audience || client_id
  }
  include_profile_claims = !filter_claims_by_scope || requested_scopes.include?("profile")
  include_email_claims = !filter_claims_by_scope || requested_scopes.include?("email")
  payload[:name] = user["name"] if include_profile_claims
  if include_email_claims
    payload[:email] = user["email"]
    payload[:email_verified] = !!user["emailVerified"]
  end
  payload[:sid] = session_id if include_sid && session_id
  payload[:nonce] = nonce if nonce
  payload[:auth_time] = timestamp_seconds(auth_time) if auth_time
  if custom_claims.respond_to?(:call)
    extra = custom_claims.call({user: user, scopes: requested_scopes, client: client})
    if extra.is_a?(Hash)
      pinned = %w[sub iss aud exp iat nonce sid]
      payload.merge!(stringify_keys(extra).except(*pinned).transform_keys(&:to_sym))
    end
  end
  return signer.call(ctx, payload) if signer.respond_to?(:call)

  if use_jwt_plugin && ctx
    signed = sign_oauth_jwt(ctx, payload, issuer: issuer_value, audience: audience)
    return signed if signed
  end

  Crypto.sign_jwt(
    payload,
    id_token_hs256_key(ctx, client_id, stringify_keys(client)["clientSecret"] || stringify_keys(client)["client_secret"]),
    expires_in: expires_in
  )
end

.id_token_hs256_key(ctx, client_id, client_secret = nil) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 759

def id_token_hs256_key(ctx, client_id, client_secret = nil)
  return client_secret.to_s unless client_secret.to_s.empty?

  label = client_id.to_s.empty? ? "better-auth" : client_id.to_s
  OpenSSL::HMAC.hexdigest("SHA256", ctx.context.secret.to_s, "oidc.id_token.#{label}")
end

.issue_tokens(ctx, store, model:, client:, session:, scopes:, include_refresh: false, issuer: nil, jwt_audience: nil, access_token_expires_in: 3600, refresh_token_expires_in: 2_592_000, id_token_expires_in: 3600, id_token_signer: nil, prefix: {}, audience: nil, grant_type: nil, custom_token_response_fields: nil, custom_access_token_claims: nil, custom_id_token_claims: nil, jwt_access_token: false, use_jwt_plugin: false, pairwise_secret: nil, nonce: nil, auth_time: nil, reference_id: nil, filter_id_token_claims_by_scope: false) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 406

def issue_tokens(ctx, store, model:, client:, session:, scopes:, include_refresh: false, issuer: nil, jwt_audience: nil, access_token_expires_in: 3600, refresh_token_expires_in: 2_592_000, id_token_expires_in: 3600, id_token_signer: nil, prefix: {}, audience: nil, grant_type: nil, custom_token_response_fields: nil, custom_access_token_claims: nil, custom_id_token_claims: nil, jwt_access_token: false, use_jwt_plugin: false, pairwise_secret: nil, nonce: nil, auth_time: nil, reference_id: nil, filter_id_token_claims_by_scope: false)
  data = stringify_keys(session || {})
  user = stringify_keys(data["user"] || data[:user] || {})
  session_data = stringify_keys(data["session"] || data[:session] || {})
  client_data = stringify_keys(client)
  subject = subject_identifier(user["id"], client_data, pairwise_secret)
  token_auth_time = auth_time || session_auth_time({"session" => session_data})
  token_reference_id = reference_id || client_data["referenceId"]
  access_token_value = Crypto.random_string(32)
  refresh_token_value = include_refresh ? Crypto.random_string(32) : nil
  refresh_token = refresh_token_value ? apply_prefix(refresh_token_value, prefix, :refresh_token) : nil
  scope = scope_string(scopes)
  expires_at = Time.now + access_token_expires_in.to_i
  access_token = if jwt_access_token && audience
    build_jwt_access_token(ctx, client_data, user, session_data, scope, audience, issuer || issuer(ctx), expires_at, custom_access_token_claims, reference_id: token_reference_id, use_jwt_plugin: use_jwt_plugin)
  else
    apply_prefix(access_token_value, prefix, :access_token)
  end
  refresh_record = nil
  if refresh_token_value
    refresh_record = {
      "token" => refresh_token_value,
      "clientId" => client_data["clientId"],
      "sessionId" => session_data["id"],
      "userId" => user["id"],
      "referenceId" => token_reference_id,
      "authTime" => token_auth_time,
      "expiresAt" => Time.now + refresh_token_expires_in.to_i,
      "createdAt" => Time.now,
      "revoked" => nil,
      "scopes" => parse_scopes(scope),
      "subject" => subject,
      "audience" => audience,
      "issuer" => issuer || issuer(ctx),
      "issuedAt" => Time.now
    }
    created_refresh = schema_model?(ctx, "oauthRefreshToken") ? ctx.context.adapter.create(model: "oauthRefreshToken", data: refresh_record) : nil
    refresh_record = refresh_record.merge("id" => stringify_keys(created_refresh || {})["id"], "user" => user, "session" => session_data, "client" => client_data, "scope" => scope)
    store[:refresh_tokens][refresh_token_value] = refresh_record
    store[:refresh_tokens][refresh_token] = refresh_record
  end
  unless jwt_access_token && audience
    record = {
      "token" => access_token_value,
      "expiresAt" => expires_at,
      "clientId" => client_data["clientId"],
      "userId" => user["id"],
      "subject" => subject,
      "sessionId" => session_data["id"],
      "scopes" => parse_scopes(scope),
      "revoked" => nil,
      "referenceId" => token_reference_id,
      "authTime" => token_auth_time,
      "refreshId" => refresh_record && refresh_record["id"],
      "audience" => audience,
      "issuer" => issuer || issuer(ctx),
      "issuedAt" => Time.now
    }
    created_access = ctx.context.adapter.create(model: model, data: record)
    created = stringify_keys(created_access || {})
    record = record.merge("id" => created["id"]) if created["id"]
    stored_record = record.merge("user" => user, "session" => session_data, "client" => client_data)
    store[:tokens][access_token_value] = stored_record
    store[:tokens][access_token] = stored_record
  end

  response = {
    access_token: access_token,
    token_type: "Bearer",
    expires_in: access_token_expires_in.to_i,
    expires_at: expires_at.to_i,
    scope: scope
  }
  response[:audience] = audience if audience
  response[:refresh_token] = refresh_token if refresh_token
  response[:id_token] = id_token(user.merge("id" => subject), client_data["clientId"], issuer || issuer(ctx), jwt_audience || client_data["clientId"], ctx: ctx, signer: id_token_signer, session_id: session_data["id"], include_sid: !!client_data["enableEndSession"], nonce: nonce, auth_time: token_auth_time, custom_claims: custom_id_token_claims, scopes: parse_scopes(scope), client: client_data, filter_claims_by_scope: filter_id_token_claims_by_scope, expires_in: id_token_expires_in, use_jwt_plugin: use_jwt_plugin) if parse_scopes(scope).include?("openid")
  if custom_token_response_fields.respond_to?(:call)
    extra = custom_token_response_fields.call({grant_type: grant_type, user: user.empty? ? nil : user, scopes: parse_scopes(scope), metadata: stringify_keys(client_data["metadata"] || {})})
    response.merge!(stringify_keys(extra).reject { |key, _value| standard_token_response_field?(key) }.transform_keys(&:to_sym)) if extra.is_a?(Hash)
  end
  response
end

.issuer(ctx) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 32

def issuer(ctx)
  ctx.context.options.base_url.to_s.empty? ? origin_for(ctx.context.base_url) : ctx.context.options.base_url
end

.jwt_plugin_options(ctx) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 766

def jwt_plugin_options(ctx)
  plugin = ctx.context.options.plugins.find { |entry| entry.id == "jwt" }
  plugin&.options
end

.jwt_userinfo(token, jwt_secret, additional_claim: nil, ctx: nil, issuer: nil) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 610

def jwt_userinfo(token, jwt_secret, additional_claim: nil, ctx: nil, issuer: nil)
  payload = if ctx
    verify_oauth_jwt(ctx, token, issuer: issuer || issuer(ctx), hs256_secret: jwt_secret)
  else
    ::JWT.decode(token, jwt_secret.to_s, true, algorithm: "HS256").first
  end
  scopes = parse_scopes(payload["scope"])
  raise userinfo_openid_scope_error unless scopes.include?("openid")

  response = {sub: payload["sub"]}
  if scopes.include?("profile")
    response[:name] = payload["name"] if payload["name"]
    response[:given_name] = payload["name"].to_s.split(/\s+/, 2).first if payload["name"]
    response[:family_name] = payload["name"].to_s.split(/\s+/, 2).last if payload["name"].to_s.include?(" ")
  end
  if scopes.include?("email")
    response[:email] = payload["email"]
    response[:email_verified] = !!payload["email_verified"]
  end
  if additional_claim.respond_to?(:call)
    extra = additional_claim.call({user: payload, scopes: scopes, jwt: payload, client: {}})
    response.merge!(extra) if extra.is_a?(Hash)
  end
  response
rescue ::JWT::DecodeError
  raise APIError.new("UNAUTHORIZED", message: "invalid_token")
end

.loopback_host?(host) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 84

def loopback_host?(host)
  ["127.0.0.1", "::1"].include?(host.to_s)
end

.loopback_redirect_match?(redirects, redirect_uri) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 63

def loopback_redirect_match?(redirects, redirect_uri)
  requested = URI.parse(redirect_uri.to_s)
  return false unless ["http", "https"].include?(requested.scheme)
  requested_host = requested.hostname || requested.host
  return false unless loopback_host?(requested_host)

  redirects.any? do |allowed|
    allowed_uri = URI.parse(allowed.to_s)
    allowed_host = allowed_uri.hostname || allowed_uri.host
    allowed_uri.scheme == requested.scheme &&
      loopback_host?(allowed_host) &&
      allowed_host == requested_host &&
      allowed_uri.path == requested.path &&
      allowed_uri.query == requested.query
  rescue URI::InvalidURIError
    false
  end
rescue URI::InvalidURIError
  false
end

.normalize_secret_storage_mode(mode) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 873

def normalize_secret_storage_mode(mode)
  return stringify_keys(mode).transform_keys(&:to_sym) if mode.is_a?(Hash)

  mode.to_s
end

.oauth_jwt_config(ctx, issuer:, audience:) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 771

def oauth_jwt_config(ctx, issuer:, audience:)
  options = jwt_plugin_options(ctx)
  return nil unless options

  BetterAuth::Plugins.deep_merge(options, jwt: {issuer: issuer, audience: audience})
end

.origin_for(url) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 40

def origin_for(url)
  uri = URI.parse(url.to_s)
  port = uri.port
  default_port = (uri.scheme == "http" && port == 80) || (uri.scheme == "https" && port == 443)
  default_port ? "#{uri.scheme}://#{uri.host}" : "#{uri.scheme}://#{uri.host}:#{port}"
end

.parse_scopes(value) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 19

def parse_scopes(value)
  case value
  when Array
    value.map(&:to_s).reject(&:empty?)
  else
    value.to_s.split(/\s+/).reject(&:empty?)
  end
end

.pkce_required?(client, scopes) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 397

def pkce_required?(client, scopes)
  data = stringify_keys(client)
  return true if parse_scopes(scopes).include?("offline_access")
  require_pkce = client_require_pkce(data)
  return require_pkce unless require_pkce.nil?

  true
end

.redirect_uri_with_params(uri, params) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 47

def redirect_uri_with_params(uri, params)
  parsed = URI.parse(uri.to_s)
  existing = URI.decode_www_form(parsed.query.to_s)
  params.each { |key, value| existing << [key.to_s, value.to_s] unless value.nil? }
  parsed.query = URI.encode_www_form(existing)
  parsed.to_s
end

.refresh_tokens(ctx, store, model:, client:, refresh_token:, scopes: nil, issuer: nil, access_token_expires_in: 3600, refresh_token_expires_in: 2_592_000, id_token_expires_in: 3600, id_token_signer: nil, prefix: {}, audience: nil, custom_token_response_fields: nil, custom_access_token_claims: nil, custom_id_token_claims: nil, jwt_access_token: false, use_jwt_plugin: false, pairwise_secret: nil, filter_id_token_claims_by_scope: false) ⇒ Object

Raises:



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 489

def refresh_tokens(ctx, store, model:, client:, refresh_token:, scopes: nil, issuer: nil, access_token_expires_in: 3600, refresh_token_expires_in: 2_592_000, id_token_expires_in: 3600, id_token_signer: nil, prefix: {}, audience: nil, custom_token_response_fields: nil, custom_access_token_claims: nil, custom_id_token_claims: nil, jwt_access_token: false, use_jwt_plugin: false, pairwise_secret: nil, filter_id_token_claims_by_scope: false)
  refresh_token_value = strip_prefix(refresh_token, prefix, :refresh_token)
  data = refresh_token_value ? store[:refresh_tokens][refresh_token_value] : nil
  raise APIError.new("BAD_REQUEST", message: "invalid_grant") unless data
  if data["revoked"]
    revoke_refresh_family!(ctx, store, data)
    raise APIError.new("BAD_REQUEST", message: "invalid_grant")
  end
  raise APIError.new("BAD_REQUEST", message: "invalid_grant") if data["expiresAt"] && data["expiresAt"] <= Time.now

  client_data = stringify_keys(client)
  unless data["clientId"].to_s == client_data["clientId"].to_s
    raise APIError.new("BAD_REQUEST", message: "invalid_grant")
  end

  requested = scopes ? parse_scopes(scopes) : data["scopes"]
  unless requested.all? { |scope| data["scopes"].include?(scope) }
    raise APIError.new("BAD_REQUEST", message: "invalid_scope")
  end
  data["revoked"] = Time.now
  ctx.context.adapter.update(model: "oauthRefreshToken", where: [{field: "id", value: data["id"]}], update: {revoked: data["revoked"]}) if data["id"] && schema_model?(ctx, "oauthRefreshToken")

  issue_tokens(
    ctx,
    store,
    model: model,
    client: client,
    session: {"user" => data["user"], "session" => data["session"]},
    scopes: requested,
    include_refresh: true,
    issuer: issuer,
    access_token_expires_in: access_token_expires_in,
    refresh_token_expires_in: refresh_token_expires_in,
    id_token_signer: id_token_signer,
    prefix: prefix,
    audience: audience,
    grant_type: REFRESH_GRANT,
    custom_token_response_fields: custom_token_response_fields,
    custom_access_token_claims: custom_access_token_claims,
    custom_id_token_claims: custom_id_token_claims,
    jwt_access_token: jwt_access_token,
    use_jwt_plugin: use_jwt_plugin,
    pairwise_secret: pairwise_secret,
    id_token_expires_in: id_token_expires_in,
    auth_time: data["authTime"],
    reference_id: data["referenceId"],
    filter_id_token_claims_by_scope: filter_id_token_claims_by_scope
  )
end

.revoke_refresh_family!(ctx, store, refresh_record) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 660

def revoke_refresh_family!(ctx, store, refresh_record)
  client_id = refresh_record["clientId"]
  user_id = refresh_record["userId"]
  store[:refresh_tokens].delete_if { |_token, record| record["clientId"] == client_id && record["userId"] == user_id }
  store[:tokens].delete_if { |_token, record| record["clientId"] == client_id && record["userId"] == user_id }
  if schema_model?(ctx, "oauthRefreshToken")
    refresh_ids = ctx.context.adapter.find_many(
      model: "oauthRefreshToken",
      where: [
        {field: "clientId", value: client_id},
        {field: "userId", value: user_id}
      ]
    ).map { |entry| stringify_keys(entry)["id"] }

    ctx.context.adapter.delete_many(
      model: "oauthRefreshToken",
      where: [
        {field: "clientId", value: client_id},
        {field: "userId", value: user_id}
      ]
    )

    if schema_model?(ctx, "oauthAccessToken")
      refresh_ids.each do |refresh_id|
        ctx.context.adapter.delete_many(model: "oauthAccessToken", where: [{field: "refreshId", value: refresh_id}])
      end
    end
  end
end

.schema_model?(ctx, model) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 690

def schema_model?(ctx, model)
  Schema.auth_tables(ctx.context.options).key?(model.to_s)
end

.scope_string(value) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 28

def scope_string(value)
  parse_scopes(value).join(" ")
end

.sector_identifier(client) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 806

def sector_identifier(client)
  data = stringify_keys(client)
  uri = client_redirect_uris(data).first
  raise APIError.new("BAD_REQUEST", message: "pairwise subject_type requires redirect_uris") if uri.to_s.empty?

  URI.parse(uri.to_s).host || data["clientId"]
rescue URI::InvalidURIError
  data["clientId"]
end

.session_auth_time(session) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 816

def session_auth_time(session)
  data = stringify_keys(session || {})
  session_data = stringify_keys(data["session"] || data[:session] || data)
  session_data["createdAt"] || session_data["created_at"]
end

.sign_oauth_jwt(ctx, payload, issuer:, audience:) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 778

def sign_oauth_jwt(ctx, payload, issuer:, audience:)
  config = oauth_jwt_config(ctx, issuer: issuer, audience: audience)
  return nil unless config

  BetterAuth::Plugins.sign_jwt_payload(ctx, stringify_keys(payload), config)
end

.standard_token_response_field?(key) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 795

def standard_token_response_field?(key)
  %w[access_token token_type expires_in scope refresh_token id_token audience].include?(key.to_s)
end

.store_client_secret_value(ctx, secret, mode) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 847

def store_client_secret_value(ctx, secret, mode)
  mode = normalize_secret_storage_mode(mode)
  return Crypto.sha256(secret, encoding: :base64url) if mode == "hashed"
  return Crypto.symmetric_encrypt(key: ctx.context.secret_config, data: secret) if mode == "encrypted"

  if mode.is_a?(Hash)
    return mode[:hash].call(secret) if mode[:hash].respond_to?(:call)
    return mode[:encrypt].call(secret) if mode[:encrypt].respond_to?(:call)
  end

  secret
end

.store_code(store, code:, client_id:, redirect_uri:, session:, scopes:, code_challenge: nil, code_challenge_method: nil, nonce: nil, reference_id: nil, auth_time: nil, expires_in: 600) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 347

def store_code(store, code:, client_id:, redirect_uri:, session:, scopes:, code_challenge: nil, code_challenge_method: nil, nonce: nil, reference_id: nil, auth_time: nil, expires_in: 600)
  store[:codes][code] = {
    client_id: client_id,
    redirect_uri: redirect_uri,
    session: session,
    scopes: parse_scopes(scopes),
    code_challenge: code_challenge,
    code_challenge_method: code_challenge_method,
    nonce: nonce,
    reference_id: reference_id,
    auth_time: auth_time || session_auth_time(session),
    expires_at: Time.now + expires_in.to_i
  }
end

.stores ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 879

def stores
  {
    codes: {},
    tokens: {},
    refresh_tokens: {},
    consents: {}
  }
end

.stringify_keys(value) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 888

def stringify_keys(value)
  return value.each_with_object({}) { |(key, object_value), result| result[key.to_s] = stringify_keys(object_value) } if value.is_a?(Hash)
  return value.map { |entry| stringify_keys(entry) } if value.is_a?(Array)

  value
end

.strip_prefix(value, prefix, kind) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 698

def strip_prefix(value, prefix, kind)
  token = value.to_s
  expected = token_prefix(prefix, kind)
  return token if expected.empty?
  return token.delete_prefix(expected) if token.start_with?(expected)

  nil
end

.subject_identifier(user_id, client, pairwise_secret) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 799

def subject_identifier(user_id, client, pairwise_secret)
  data = stringify_keys(client)
  return user_id unless data["subjectType"] == "pairwise" && pairwise_secret && user_id

  OpenSSL::HMAC.hexdigest("SHA256", pairwise_secret.to_s, "#{sector_identifier(data)}.#{user_id}")
end

.timestamp_seconds(value) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 822

def timestamp_seconds(value)
  if value.is_a?(Numeric)
    return nil unless value.finite?
    return nil if value.abs > 8_640_000_000_000_000

    return (value / 1000.0).floor if value.abs >= 100_000_000_000

    return value.to_i
  end
  if value.is_a?(String) && value.match?(/\A[-+]?(?:\d+(?:\.\d+)?|\.\d+)(?:e[-+]?\d+)?\z/i)
    numeric = value.to_f
    return nil unless numeric.finite?
    return nil if numeric.abs > 8_640_000_000_000_000

    return (numeric / 1000.0).floor if numeric.abs >= 100_000_000_000

    return numeric.to_i
  end
  return timestamp_seconds(value.to_i) if value.respond_to?(:to_i) && !value.is_a?(String)

  Time.parse(value.to_s).to_i
rescue ArgumentError, TypeError, FloatDomainError
  nil
end

.token_prefix(prefix, kind) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 707

def token_prefix(prefix, kind)
  data = stringify_keys(prefix || {})
  case kind
  when :access_token
    data["opaque_access_token"] || data["opaqueAccessToken"] || "ba_at_"
  when :refresh_token
    data["refresh_token"] || data["refreshToken"] || "ba_rt_"
  when :client_secret
    data["client_secret"] || data["clientSecret"] || ""
  else
    ""
  end
end

.token_record(store, token, prefix: {}) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 539

def token_record(store, token, prefix: {})
  token_value = strip_prefix(token, prefix, :access_token)
  data = token_value ? store[:tokens][token_value] : nil
  return nil unless data
  return nil if data["revoked"]
  return nil if data["expiresAt"] && data["expiresAt"] <= Time.now

  data
end

.userinfo(store, authorization, additional_claim: nil, prefix: {}, jwt_secret: nil, ctx: nil, issuer: nil) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 575

def userinfo(store, authorization, additional_claim: nil, prefix: {}, jwt_secret: nil, ctx: nil, issuer: nil)
  if authorization.to_s.strip.empty?
    raise APIError.new(
      "UNAUTHORIZED",
      message: "authorization header not found",
      body: {error: "invalid_request", error_description: "authorization header not found"}
    )
  end
  token = authorization.to_s.delete_prefix("Bearer ").strip
  record = token_record(store, token, prefix: prefix)
  return jwt_userinfo(token, jwt_secret, additional_claim: additional_claim, ctx: ctx, issuer: issuer) unless record
  user = stringify_keys(record["user"])
  scopes = parse_scopes(record["scopes"])
  raise userinfo_openid_scope_error unless scopes.include?("openid")

  response = {sub: record["subject"] || user["id"]}
  response[:name] = user["name"] if scopes.include?("profile")
  response[:given_name] = user["name"].to_s.split(/\s+/, 2).first if scopes.include?("profile") && user["name"]
  response[:family_name] = user["name"].to_s.split(/\s+/, 2).last if scopes.include?("profile") && user["name"].to_s.include?(" ")
  response[:picture] = user["image"] if scopes.include?("profile") && user["image"]
  if scopes.include?("email")
    response[:email] = user["email"]
    response[:email_verified] = !!user["emailVerified"]
  end
  if additional_claim.respond_to?(:call)
    extra = begin
      additional_claim.call({user: user, scopes: scopes, jwt: record, client: stringify_keys(record["client"] || {})})
    rescue ArgumentError
      additional_claim.call(user, scopes, stringify_keys(record["client"] || {}))
    end
    response.merge!(extra) if extra.is_a?(Hash)
  end
  response
end

.userinfo_openid_scope_error ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 638

def userinfo_openid_scope_error
  APIError.new(
    "BAD_REQUEST",
    message: "openid scope is required",
    body: {error: "invalid_request", error_description: "openid scope is required"}
  )
end

.validate_admin_only_fields!(body, admin:) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 304

def validate_admin_only_fields!(body, admin:)
  return if admin

  %w[client_secret_expires_at clientSecretExpiresAt].each do |key|
    raise APIError.new("BAD_REQUEST", message: "field #{key} is server-only") if body.key?(key)
  end
end

.validate_authorize_pkce(client, scopes, code_challenge, code_challenge_method) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 386

def validate_authorize_pkce(client, scopes, code_challenge, code_challenge_method)
  method = code_challenge_method.to_s
  return "code_challenge_method must be S256" if !code_challenge.to_s.empty? && method != "S256"

  return nil unless pkce_required?(client, scopes)
  return "PKCE is required" if code_challenge.to_s.empty?
  return "code_challenge_method must be S256" if method != "S256"

  nil
end

.validate_client_metadata_enums!(auth_method, body) ⇒ Object

Raises:



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 287

def validate_client_metadata_enums!(auth_method, body)
  unless ["client_secret_basic", "client_secret_post", "none"].include?(auth_method)
    raise APIError.new("BAD_REQUEST", message: "invalid token_endpoint_auth_method")
  end

  invalid_grant = Array(body["grant_types"]).map(&:to_s) - [AUTH_CODE_GRANT, CLIENT_CREDENTIALS_GRANT, REFRESH_GRANT]
  raise APIError.new("BAD_REQUEST", message: "invalid grant_types") unless invalid_grant.empty?

  invalid_response = Array(body["response_types"]).map(&:to_s) - ["code"]
  raise APIError.new("BAD_REQUEST", message: "invalid response_types") unless invalid_response.empty?

  client_type = body["type"]
  if client_type && !["web", "native", "user-agent-based"].include?(client_type)
    raise APIError.new("BAD_REQUEST", message: "invalid type")
  end
end

.validate_client_registration!(auth_method, grant_types, response_types, body, unauthenticated:, dynamic_registration:) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 218

def validate_client_registration!(auth_method, grant_types, response_types, body, unauthenticated:, dynamic_registration:)
  public_client = auth_method == "none"
  if dynamic_registration && (body["require_pkce"] == false || body["requirePKCE"] == false)
    raise APIError.new("BAD_REQUEST", message: "pkce is required for registered clients")
  end
  if dynamic_registration && (body["enable_end_session"] || body["enableEndSession"])
    raise APIError.new("BAD_REQUEST", message: "enable_end_session is not allowed during dynamic client registration")
  end
  if public_client && grant_types.include?(CLIENT_CREDENTIALS_GRANT)
    raise APIError.new("BAD_REQUEST", message: "public clients cannot use client_credentials")
  end
  if grant_types.include?(AUTH_CODE_GRANT) && !response_types.include?("code")
    raise APIError.new("BAD_REQUEST", message: "authorization_code clients must support code response_type")
  end
  if auth_method != "none" && ["native", "user-agent-based"].include?(body["type"])
    raise APIError.new("BAD_REQUEST", message: "public client types must use token_endpoint_auth_method none")
  end
  if !unauthenticated && auth_method == "none" && body["type"] == "web"
    raise APIError.new("BAD_REQUEST", message: "web clients must be confidential")
  end
end

.validate_pairwise_client!(body, redirects, pairwise_secret) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 240

def validate_pairwise_client!(body, redirects, pairwise_secret)
  subject_type = body["subject_type"] || body["subjectType"]
  return unless subject_type == "pairwise"

  raise APIError.new("BAD_REQUEST", message: "pairwise subject_type requires pairwise_secret") if pairwise_secret.to_s.empty?

  hosts = redirects.map { |uri| URI.parse(uri).host }.uniq
  raise APIError.new("BAD_REQUEST", message: "pairwise redirect_uris must share the same host") if hosts.length > 1
rescue URI::InvalidURIError
  raise APIError.new("BAD_REQUEST", message: "invalid redirect_uris")
end

.validate_redirect_uri!(client, redirect_uri) ⇒ Object

Raises:



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 55

def validate_redirect_uri!(client, redirect_uri)
  redirects = client_redirect_uris(client)
  return if redirects.include?(redirect_uri.to_s)
  return if loopback_redirect_match?(redirects, redirect_uri)

  raise APIError.new("BAD_REQUEST", message: "invalid redirect_uri")
end

.validate_safe_url!(value, field:) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 252

def validate_safe_url!(value, field:)
  raise APIError.new("BAD_REQUEST", message: "#{field} is invalid") if value.to_s.empty?

  uri = URI.parse(value.to_s)
  scheme = uri.scheme.to_s.downcase
  raise APIError.new("BAD_REQUEST", message: "#{field} is invalid") if scheme.empty?
  raise APIError.new("BAD_REQUEST", message: "#{field} is invalid") if %w[javascript data vbscript].include?(scheme)

  if scheme == "http"
    raise APIError.new("BAD_REQUEST", message: "#{field} is invalid") unless ["localhost", "127.0.0.1", "::1"].include?(uri.hostname || uri.host)
  end
  true
rescue URI::InvalidURIError
  raise APIError.new("BAD_REQUEST", message: "#{field} is invalid")
end

.verify_client_secret(ctx, stored_secret, provided_secret, mode) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 860

def verify_client_secret(ctx, stored_secret, provided_secret, mode)
  mode = normalize_secret_storage_mode(mode)
  return Crypto.constant_time_compare(Crypto.sha256(provided_secret, encoding: :base64url), stored_secret.to_s) if mode == "hashed"
  return Crypto.constant_time_compare(Crypto.symmetric_decrypt(key: ctx.context.secret_config, data: stored_secret).to_s, provided_secret.to_s) if mode == "encrypted"

  if mode.is_a?(Hash)
    return Crypto.constant_time_compare(mode[:hash].call(provided_secret).to_s, stored_secret.to_s) if mode[:hash].respond_to?(:call)
    return Crypto.constant_time_compare(mode[:decrypt].call(stored_secret).to_s, provided_secret.to_s) if mode[:decrypt].respond_to?(:call)
  end

  Crypto.constant_time_compare(stored_secret.to_s, provided_secret.to_s)
end

.verify_oauth_jwt(ctx, token, issuer:, hs256_secret:) ⇒ Object 



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 785

def verify_oauth_jwt(ctx, token, issuer:, hs256_secret:)
  payload = ::JWT.decode(token.to_s, nil, false).first
  audience = payload["aud"]
  config = oauth_jwt_config(ctx, issuer: issuer, audience: audience.is_a?(Array) ? audience.first : audience)
  verified = BetterAuth::Plugins.verify_jwt_token(ctx, token, config) if config
  return verified if verified

  ::JWT.decode(token, hs256_secret.to_s, true, algorithm: "HS256").first
end

.verify_pkce!(code_data, verifier) ⇒ Object

Raises:



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# File 'lib/better_auth/plugins/oauth_protocol.rb', line 377

def verify_pkce!(code_data, verifier)
  raise APIError.new("BAD_REQUEST", message: "invalid_grant") if verifier.to_s.empty?

  raise APIError.new("BAD_REQUEST", message: "invalid_grant") unless code_data[:code_challenge_method].to_s == "S256"

  challenge = Base64.urlsafe_encode64(OpenSSL::Digest.digest("SHA256", verifier.to_s), padding: false)
  raise APIError.new("BAD_REQUEST", message: "invalid_grant") unless challenge == code_data[:code_challenge]
end