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fix(tls): Pass certificate and private key files to listener method (#531)

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Fixes #530
This commit is contained in:
TwiN 2023-07-20 19:02:34 -04:00 committed by GitHub
parent 2f6b8f23f7
commit fd17dcd204
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4 changed files with 57 additions and 26 deletions
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6
README.md
View File

@ -1278,14 +1278,14 @@ Confused? Read [Securing Gatus with OIDC using Auth0](https://twin.sh/articles/5
### TLS Encryption
Gatus supports basic encryption with TLS. To enable this, certificate files in PEM format have to be provided.
The example below shows an example configuration which makes gatus respond on port 4443 to HTTPS requests.
The example below shows an example configuration which makes gatus respond on port 4443 to HTTPS requests:
```yaml
web:
port: 4443
tls:
certificate-file: "server.crt"
private-key-file: "server.key"
certificate-file: "certificate.crt"
private-key-file: "private.key"
```
### Metrics

20
config/web/web.go
View File

@ -34,8 +34,6 @@ type TLSConfig struct {
// PrivateKeyFile is the private key file for TLS in PEM format.
PrivateKeyFile string `yaml:"private-key-file,omitempty"`
tlsConfig *tls.Config
}
// GetDefaultConfig returns a Config struct with the default values
@ -57,33 +55,29 @@ func (web *Config) ValidateAndSetDefaults() error {
}
// Try to load the TLS certificates
if web.TLS != nil {
if err := web.TLS.loadConfig(); err != nil {
if err := web.TLS.isValid(); err != nil {
return fmt.Errorf("invalid tls config: %w", err)
}
}
return nil
}
func (web *Config) HasTLS() bool {
return web.TLS != nil && len(web.TLS.CertificateFile) > 0 && len(web.TLS.PrivateKeyFile) > 0
}
// SocketAddress returns the combination of the Address and the Port
func (web *Config) SocketAddress() string {
return fmt.Sprintf("%s:%d", web.Address, web.Port)
}
func (t *TLSConfig) loadConfig() error {
func (t *TLSConfig) isValid() error {
if len(t.CertificateFile) > 0 && len(t.PrivateKeyFile) > 0 {
certificate, err := tls.LoadX509KeyPair(t.CertificateFile, t.PrivateKeyFile)
_, err := tls.LoadX509KeyPair(t.CertificateFile, t.PrivateKeyFile)
if err != nil {
return err
}
t.tlsConfig = &tls.Config{Certificates: []tls.Certificate{certificate}}
return nil
}
return errors.New("certificate-file and private-key-file must be specified")
}
func (web *Config) TLSConfig() *tls.Config {
if web.TLS != nil {
return web.TLS.tlsConfig
}
return nil
}

43
config/web/web_test.go
View File

@ -37,6 +37,27 @@ func TestConfig_ValidateAndSetDefaults(t *testing.T) {
cfg: &Config{Port: 100000000},
expectedErr: true,
},
{
name: "with-good-tls-config",
cfg: &Config{Port: 443, TLS: &TLSConfig{CertificateFile: "../../testdata/cert.pem", PrivateKeyFile: "../../testdata/cert.key"}},
expectedAddress: "0.0.0.0",
expectedPort: 443,
expectedErr: false,
},
{
name: "with-bad-tls-config",
cfg: &Config{Port: 443, TLS: &TLSConfig{CertificateFile: "../../testdata/badcert.pem", PrivateKeyFile: "../../testdata/cert.key"}},
expectedAddress: "0.0.0.0",
expectedPort: 443,
expectedErr: true,
},
{
name: "with-partial-tls-config",
cfg: &Config{Port: 443, TLS: &TLSConfig{CertificateFile: "", PrivateKeyFile: "../../testdata/cert.key"}},
expectedAddress: "0.0.0.0",
expectedPort: 443,
expectedErr: true,
},
}
for _, scenario := range scenarios {
t.Run(scenario.name, func(t *testing.T) {
@ -67,7 +88,7 @@ func TestConfig_SocketAddress(t *testing.T) {
}
}
func TestConfig_TLSConfig(t *testing.T) {
func TestConfig_isValid(t *testing.T) {
scenarios := []struct {
name string
cfg *Config
@ -79,27 +100,37 @@ func TestConfig_TLSConfig(t *testing.T) {
expectedErr: false,
},
{
name: "missing-crt-file",
name: "missing-certificate-file",
cfg: &Config{TLS: &TLSConfig{CertificateFile: "doesnotexist", PrivateKeyFile: "../../testdata/cert.key"}},
expectedErr: true,
},
{
name: "bad-crt-file",
name: "bad-certificate-file",
cfg: &Config{TLS: &TLSConfig{CertificateFile: "../../testdata/badcert.pem", PrivateKeyFile: "../../testdata/cert.key"}},
expectedErr: true,
},
{
name: "no-certificate-file",
cfg: &Config{TLS: &TLSConfig{CertificateFile: "", PrivateKeyFile: "../../testdata/cert.key"}},
expectedErr: true,
},
{
name: "missing-private-key-file",
cfg: &Config{TLS: &TLSConfig{CertificateFile: "../../testdata/cert.pem", PrivateKeyFile: "doesnotexist"}},
expectedErr: true,
},
{
name: "no-private-key-file",
cfg: &Config{TLS: &TLSConfig{CertificateFile: "../../testdata/cert.pem", PrivateKeyFile: ""}},
expectedErr: true,
},
{
name: "bad-private-key-file",
cfg: &Config{TLS: &TLSConfig{CertificateFile: "../../testdata/cert.pem", PrivateKeyFile: "../../testdata/badcert.key"}},
expectedErr: true,
},
{
name: "bad-cert-and-private-key-file",
name: "bad-certificate-and-private-key-file",
cfg: &Config{TLS: &TLSConfig{CertificateFile: "../../testdata/badcert.pem", PrivateKeyFile: "../../testdata/badcert.key"}},
expectedErr: true,
},
@ -112,8 +143,8 @@ func TestConfig_TLSConfig(t *testing.T) {
return
}
if !scenario.expectedErr {
if scenario.cfg.TLS.tlsConfig == nil {
t.Error("TLS configuration was not correctly loaded although no error was returned")
if scenario.cfg.TLS.isValid() != nil {
t.Error("cfg.TLS.isValid() returned an error even though no error was expected")
}
}
})

14
controller/controller.go
View File

@ -22,16 +22,22 @@ func Handle(cfg *config.Config) {
server.ReadTimeout = 15 * time.Second
server.WriteTimeout = 15 * time.Second
server.IdleTimeout = 15 * time.Second
server.TLSConfig = cfg.Web.TLSConfig()
if os.Getenv("ROUTER_TEST") == "true" {
return
}
log.Println("[controller][Handle] Listening on " + cfg.Web.SocketAddress())
if server.TLSConfig != nil {
log.Println("[controller][Handle]", app.ListenTLS(cfg.Web.SocketAddress(), "", ""))
if cfg.Web.HasTLS() {
err := app.ListenTLS(cfg.Web.SocketAddress(), cfg.Web.TLS.CertificateFile, cfg.Web.TLS.PrivateKeyFile)
if err != nil {
log.Fatal("[controller][Handle]", err)
}
} else {
log.Println("[controller][Handle]", app.Listen(cfg.Web.SocketAddress()))
err := app.Listen(cfg.Web.SocketAddress())
if err != nil {
log.Fatal("[controller][Handle]", err)
}
}
log.Println("[controller][Handle] Server has shut down successfully")
}
// Shutdown stops the server