authelia/internal/server/server.go

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package server
import (
"crypto/tls"
"crypto/x509"
"fmt"
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"net"
"os"
"strconv"
"strings"
"github.com/sirupsen/logrus"
"github.com/valyala/fasthttp"
"github.com/authelia/authelia/v4/internal/configuration/schema"
"github.com/authelia/authelia/v4/internal/logging"
"github.com/authelia/authelia/v4/internal/middlewares"
)
// CreateDefaultServer Create Authelia's internal webserver with the given configuration and providers.
func CreateDefaultServer(config schema.Configuration, providers middlewares.Providers) (server *fasthttp.Server, listener net.Listener, err error) {
if err = providers.Templates.LoadTemplatedAssets(assets); err != nil {
return nil, nil, fmt.Errorf("failed to load templated assets: %w", err)
}
server = &fasthttp.Server{
ErrorHandler: handleError(),
Handler: handleRouter(config, providers),
NoDefaultServerHeader: true,
ReadBufferSize: config.Server.Buffers.Read,
WriteBufferSize: config.Server.Buffers.Write,
ReadTimeout: config.Server.Timeouts.Read,
WriteTimeout: config.Server.Timeouts.Write,
IdleTimeout: config.Server.Timeouts.Idle,
Logger: logging.LoggerPrintf(logrus.DebugLevel),
}
address := net.JoinHostPort(config.Server.Host, strconv.Itoa(config.Server.Port))
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var (
connectionType string
connectionScheme string
)
if config.Server.TLS.Certificate != "" && config.Server.TLS.Key != "" {
connectionType, connectionScheme = connTLS, schemeHTTPS
if err = server.AppendCert(config.Server.TLS.Certificate, config.Server.TLS.Key); err != nil {
return nil, nil, fmt.Errorf("unable to load tls server certificate '%s' or private key '%s': %w", config.Server.TLS.Certificate, config.Server.TLS.Key, err)
}
if len(config.Server.TLS.ClientCertificates) > 0 {
caCertPool := x509.NewCertPool()
var cert []byte
for _, path := range config.Server.TLS.ClientCertificates {
if cert, err = os.ReadFile(path); err != nil {
return nil, nil, fmt.Errorf("unable to load tls client certificate '%s': %w", path, err)
}
caCertPool.AppendCertsFromPEM(cert)
}
// ClientCAs should never be nil, otherwise the system cert pool is used for client authentication
// but we don't want everybody on the Internet to be able to authenticate.
server.TLSConfig.ClientCAs = caCertPool
server.TLSConfig.ClientAuth = tls.RequireAndVerifyClientCert
}
if listener, err = tls.Listen("tcp", address, server.TLSConfig.Clone()); err != nil {
return nil, nil, fmt.Errorf("unable to initialize tcp listener: %w", err)
}
} else {
connectionType, connectionScheme = connNonTLS, schemeHTTP
if listener, err = net.Listen("tcp", address); err != nil {
return nil, nil, fmt.Errorf("unable to initialize tcp listener: %w", err)
}
}
if err = writeHealthCheckEnv(config.Server.DisableHealthcheck, connectionScheme, config.Server.Host,
config.Server.Path, config.Server.Port); err != nil {
return nil, nil, fmt.Errorf("unable to configure healthcheck: %w", err)
}
paths := []string{"/"}
if config.Server.Path != "" {
paths = append(paths, config.Server.Path)
}
logging.Logger().Infof(fmtLogServerInit, "server", connectionType, listener.Addr().String(), strings.Join(paths, "' and '"))
return server, listener, nil
}
// CreateMetricsServer creates a metrics server.
func CreateMetricsServer(config schema.TelemetryMetricsConfig) (server *fasthttp.Server, listener net.Listener, err error) {
if listener, err = config.Address.Listener(); err != nil {
return nil, nil, err
}
server = &fasthttp.Server{
ErrorHandler: handleError(),
NoDefaultServerHeader: true,
Handler: handleMetrics(),
ReadBufferSize: config.Buffers.Read,
WriteBufferSize: config.Buffers.Write,
ReadTimeout: config.Timeouts.Read,
WriteTimeout: config.Timeouts.Write,
IdleTimeout: config.Timeouts.Idle,
Logger: logging.LoggerPrintf(logrus.DebugLevel),
}
logging.Logger().Infof(fmtLogServerInit, "server (metrics)", connNonTLS, listener.Addr().String(), "/metrics")
return server, listener, nil
}