authelia/internal/templates/util.go

121 lines
2.9 KiB
Go

package templates
import (
"fmt"
th "html/template"
"os"
"path"
"path/filepath"
"strings"
tt "text/template"
)
const (
envPrefix = "AUTHELIA_"
envXPrefix = "X_AUTHELIA_"
)
// IMPORTANT: This is a copy of github.com/authelia/authelia/internal/configuration's secretSuffixes except all uppercase.
// Make sure you update these at the same time.
var envSecretSuffixes = []string{
"KEY", "SECRET", "PASSWORD", "TOKEN", "CERTIFICATE_CHAIN",
}
func isSecretEnvKey(key string) (isSecretEnvKey bool) {
key = strings.ToUpper(key)
if !strings.HasPrefix(key, envPrefix) && !strings.HasPrefix(key, envXPrefix) {
return false
}
for _, s := range envSecretSuffixes {
suffix := strings.ToUpper(s)
if strings.HasSuffix(key, suffix) {
return true
}
}
return false
}
func fileExists(path string) (exists bool) {
info, err := os.Stat(path)
return err == nil && !info.IsDir()
}
func readTemplate(name, ext, category, overridePath string) (tPath string, embed bool, data []byte, err error) {
if overridePath != "" {
tPath = filepath.Join(overridePath, name+ext)
if fileExists(tPath) {
if data, err = os.ReadFile(tPath); err != nil {
return tPath, false, nil, fmt.Errorf("failed to read template override at path '%s': %w", tPath, err)
}
return tPath, false, data, nil
}
}
tPath = path.Join("src", category, name+ext)
if data, err = embedFS.ReadFile(tPath); err != nil {
return tPath, true, nil, fmt.Errorf("failed to read embedded template '%s': %w", tPath, err)
}
return tPath, true, data, nil
}
func parseTextTemplate(name, tPath string, embed bool, data []byte) (t *tt.Template, err error) {
if t, err = tt.New(name + extText).Funcs(FuncMap()).Parse(string(data)); err != nil {
if embed {
return nil, fmt.Errorf("failed to parse embedded template '%s': %w", tPath, err)
}
return nil, fmt.Errorf("failed to parse template override at path '%s': %w", tPath, err)
}
return t, nil
}
func parseHTMLTemplate(name, tPath string, embed bool, data []byte) (t *th.Template, err error) {
if t, err = th.New(name + extHTML).Funcs(FuncMap()).Parse(string(data)); err != nil {
if embed {
return nil, fmt.Errorf("failed to parse embedded template '%s': %w", tPath, err)
}
return nil, fmt.Errorf("failed to parse template override at path '%s': %w", tPath, err)
}
return t, nil
}
func loadEmailTemplate(name, overridePath string) (t *EmailTemplate, err error) {
var (
embed bool
tpath string
data []byte
)
t = &EmailTemplate{}
if tpath, embed, data, err = readTemplate(name, extText, TemplateCategoryNotifications, overridePath); err != nil {
return nil, err
}
if t.Text, err = parseTextTemplate(name, tpath, embed, data); err != nil {
return nil, err
}
if tpath, embed, data, err = readTemplate(name, extHTML, TemplateCategoryNotifications, overridePath); err != nil {
return nil, err
}
if t.HTML, err = parseHTMLTemplate(name, tpath, embed, data); err != nil {
return nil, err
}
return t, nil
}