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package config
import (
"errors"
"fmt"
"net/url"
"github.com/hashicorp/go-multierror"
"gitlab.com/gitlab-org/gitlab-pages/internal/config/tls"
)
var (
errNoListener = errors.New("no listener defined, please specify at least one --listen-* flag")
errAuthNoSecret = errors.New("auth-secret must be defined if authentication is supported")
errAuthNoClientID = errors.New("auth-client-id must be defined if authentication is supported")
errAuthNoClientSecret = errors.New("auth-client-secret must be defined if authentication is supported")
errAuthNoGitlabServer = errors.New("gitlab-server must be defined if authentication is supported")
errAuthNoRedirect = errors.New("auth-redirect-uri must be defined if authentication is supported")
errArtifactsServerUnsupportedScheme = errors.New("artifacts-server scheme must be either http:// or https://")
errArtifactsServerInvalidTimeout = errors.New("artifacts-server-timeout must be greater than or equal to 1")
errEmptyListener = errors.New("listener must not be empty")
)
// Validate values populated in Config
func Validate(config *Config) error {
var result *multierror.Error
result = multierror.Append(result,
validateListeners(config),
validateAuthConfig(config),
validateArtifactsServerConfig(config),
tls.ValidateTLSVersions(*tlsMinVersion, *tlsMaxVersion),
)
return result.ErrorOrNil()
}
func validateListeners(config *Config) error {
if config.ListenHTTPStrings.Len() == 0 &&
config.ListenHTTPSStrings.Len() == 0 &&
config.ListenHTTPSProxyv2Strings.Len() == 0 &&
config.ListenProxyStrings.Len() == 0 {
return errNoListener
}
var result *multierror.Error
result = multierror.Append(result,
validateListenerAddr(config.ListenHTTPStrings, "http"),
validateListenerAddr(config.ListenHTTPSStrings, "https"),
validateListenerAddr(config.ListenHTTPSProxyv2Strings, "proxyv2"),
validateListenerAddr(config.ListenProxyStrings, "proxy"),
)
return result.ErrorOrNil()
}
func validateListenerAddr(listeners MultiStringFlag, name string) error {
var result *multierror.Error
for i, s := range listeners.Split() {
if s == "" {
result = multierror.Append(result, fmt.Errorf("empty %s listener at index %d: %w", name, i, errEmptyListener))
}
}
return result.ErrorOrNil()
}
func validateAuthConfig(config *Config) error {
if config.Authentication.Secret == "" && config.Authentication.ClientID == "" &&
config.Authentication.ClientSecret == "" && config.Authentication.RedirectURI == "" {
return nil
}
var result *multierror.Error
if config.Authentication.Secret == "" {
result = multierror.Append(result, errAuthNoSecret)
}
if config.Authentication.ClientID == "" {
result = multierror.Append(result, errAuthNoClientID)
}
if config.Authentication.ClientSecret == "" {
result = multierror.Append(result, errAuthNoClientSecret)
}
if config.GitLab.PublicServer == "" {
result = multierror.Append(result, errAuthNoGitlabServer)
}
if config.Authentication.RedirectURI == "" {
result = multierror.Append(result, errAuthNoRedirect)
}
return result.ErrorOrNil()
}
func validateArtifactsServerConfig(config *Config) error {
if config.ArtifactsServer.URL == "" {
return nil
}
u, err := url.Parse(config.ArtifactsServer.URL)
if err != nil {
return err
}
var result *multierror.Error
// url.Parse ensures that the Scheme attribute is always lower case.
if u.Scheme != "http" && u.Scheme != "https" {
result = multierror.Append(result, errArtifactsServerUnsupportedScheme)
}
if config.ArtifactsServer.TimeoutSeconds < 1 {
result = multierror.Append(result, errArtifactsServerInvalidTimeout)
}
return result.ErrorOrNil()
}
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