Class: MangoApps::OAuth

Inherits:
Object
  • Object
show all
Defined in:
lib/mangoapps/oauth.rb

Defined Under Namespace

Classes: Discovery

Instance Method Summary collapse

Constructor Details

#initialize(config) ⇒ OAuth

Returns a new instance of OAuth.



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# File 'lib/mangoapps/oauth.rb', line 13

def initialize(config)
  @config = config
end

Instance Method Details

#authorization_url(state:, code_challenge: nil, code_challenge_method: "S256", extra_params: {}) ⇒ Object

Build an auth URL for browser-based login (PKCE optional)



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# File 'lib/mangoapps/oauth.rb', line 70

def authorization_url(state:, code_challenge: nil, code_challenge_method: "S256", extra_params: {})
  params = {
    redirect_uri: @config.redirect_uri,
    scope: @config.scope,
    state: state,
    response_type: "code",
  }.merge(extra_params)

  if code_challenge
    params[:code_challenge] = code_challenge
    params[:code_challenge_method] = code_challenge_method
  end

  client.auth_code.authorize_url(params)
end

#client ⇒ Object

OAuth2::Client using discovered endpoints



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# File 'lib/mangoapps/oauth.rb', line 59

def client
  @client ||= ::OAuth2::Client.new(
    @config.client_id,
    @config.client_secret,
    site: @config.base_url,
    authorize_url: discovery.authorization_endpoint,
    token_url: discovery.token_endpoint
  )
end

#discover! ⇒ Object

Discover OIDC endpoints from well-known config



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# File 'lib/mangoapps/oauth.rb', line 18

def discover!
  # Ensure we always use HTTPS for discovery
  base_url = @config.base_url
  base_url = base_url.gsub(/^http:/, 'https:') unless base_url.start_with?('https:')
  url = URI.parse("#{base_url}/.well-known/openid-configuration")

  begin
    # Use proper HTTPS handling for discovery
    http = Net::HTTP.new(url.host, url.port)
    http.use_ssl = (url.scheme == 'https')
    http.verify_mode = OpenSSL::SSL::VERIFY_PEER if http.use_ssl?
    
    request = Net::HTTP::Get.new(url)
    res = http.request(request)
    raise MangoApps::DiscoveryError, "OIDC discovery failed: #{res.code}" unless res.is_a?(Net::HTTPSuccess)

    data = JSON.parse(res.body)
    validate_discovery_data(data)

    @discovery = Discovery.new(
      data["issuer"],
      data["authorization_endpoint"],
      data["token_endpoint"],
      data["userinfo_endpoint"],
      data["end_session_endpoint"],
      data["jwks_uri"]
    )
  rescue JSON::ParserError => e
    raise MangoApps::DiscoveryError, "Invalid JSON response from discovery endpoint: #{e.message}"
  rescue Net::ReadTimeout, Net::OpenTimeout, Errno::ECONNREFUSED, Errno::EHOSTUNREACH, Timeout::Error => e
    raise MangoApps::DiscoveryError, "Failed to connect to discovery endpoint: #{e.message}"
  rescue OpenSSL::SSL::SSLError => e
    raise MangoApps::DiscoveryError, "SSL connection failed for discovery endpoint: #{e.message}"
  end
end

#discovery ⇒ Object 



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# File 'lib/mangoapps/oauth.rb', line 54

def discovery
  @discovery || discover!
end

#get_token(authorization_code:, code_verifier: nil) ⇒ Object

Exchange code for tokens (PKCE verifier optional)



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# File 'lib/mangoapps/oauth.rb', line 87

def get_token(authorization_code:, code_verifier: nil)
  token = client.auth_code.get_token(
    authorization_code,
    redirect_uri: @config.redirect_uri,
    headers: { "Content-Type" => "application/x-www-form-urlencoded" },
    code_verifier: code_verifier
  )
  persist(token)
  token
rescue OAuth2::Error => e
  raise MangoApps::TokenExchangeError, "Token exchange failed: #{e.message}"
end

#get_userinfo(access_token) ⇒ Object

Get user info from OAuth userinfo endpoint

Raises:



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# File 'lib/mangoapps/oauth.rb', line 117

def get_userinfo(access_token)
  raise MangoApps::TokenExpiredError, "No access token provided" unless access_token

  userinfo_url = discovery.userinfo_endpoint
  # Ensure userinfo endpoint uses HTTPS
  userinfo_url = userinfo_url.gsub(/^http:/, 'https:') unless userinfo_url.start_with?('https:')
  url = URI.parse(userinfo_url)
  
  begin
    # Ensure we use the correct port for HTTPS
    port = url.port || (url.scheme == 'https' ? 443 : 80)
    http = Net::HTTP.new(url.host, port)
    http.use_ssl = (url.scheme == 'https')
    http.verify_mode = OpenSSL::SSL::VERIFY_PEER if http.use_ssl?
    
    request = Net::HTTP::Get.new(url)
    request['Authorization'] = "Bearer #{access_token}"
    request['Accept'] = 'application/json'
    
    response = http.request(request)
    
    # Handle redirects (301, 302)
    if response.is_a?(Net::HTTPRedirection)
      redirect_url = response['location']
      if redirect_url
        # Follow the redirect with HTTPS
        redirect_uri = URI.parse(redirect_url)
        redirect_uri.scheme = 'https' if redirect_uri.scheme == 'http'
        
        http = Net::HTTP.new(redirect_uri.host, redirect_uri.port)
        http.use_ssl = (redirect_uri.scheme == 'https')
        http.verify_mode = OpenSSL::SSL::VERIFY_PEER if http.use_ssl?
        
        request = Net::HTTP::Get.new(redirect_uri)
        request['Authorization'] = "Bearer #{access_token}"
        request['Accept'] = 'application/json'
        
        response = http.request(request)
      end
    end
    
    unless response.is_a?(Net::HTTPSuccess)
      raise MangoApps::APIError, "Userinfo request failed: #{response.code} #{response.message}"
    end
    
    JSON.parse(response.body)
  rescue JSON::ParserError => e
    raise MangoApps::APIError, "Invalid JSON response from userinfo endpoint: #{e.message}"
  rescue Net::ReadTimeout, Net::OpenTimeout, Errno::ECONNREFUSED, Errno::EHOSTUNREACH, Timeout::Error => e
    raise MangoApps::APIError, "Failed to connect to userinfo endpoint: #{e.message}"
  rescue OpenSSL::SSL::SSLError => e
    raise MangoApps::APIError, "SSL connection failed for userinfo endpoint: #{e.message}"
  end
end

#load_token ⇒ Object 



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# File 'lib/mangoapps/oauth.rb', line 112

def load_token
  @config.token_store&.load
end

#refresh!(token) ⇒ Object

Raises:



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# File 'lib/mangoapps/oauth.rb', line 100

def refresh!(token)
  raise MangoApps::TokenExpiredError, "No refresh_token available" unless token&.refresh_token

  begin
    new_token = token.refresh!
    persist(new_token)
    new_token
  rescue OAuth2::Error => e
    raise MangoApps::TokenExpiredError, "Token refresh failed: #{e.message}"
  end
end