forked from grafana/grafana
/
helpers.go
87 lines (71 loc) · 2.27 KB
/
helpers.go
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package service
import (
"fmt"
"os"
"github.com/BurntSushi/toml"
"github.com/grafana/grafana/pkg/cmd/grafana-cli/logger"
"github.com/grafana/grafana/pkg/services/ldap"
"github.com/grafana/grafana/pkg/setting"
)
const defaultTimeout = 10
func readConfig(configFile string) (*ldap.Config, error) {
result := &ldap.Config{}
logger.Info("LDAP enabled, reading config file", "file", configFile)
// nolint:gosec
// We can ignore the gosec G304 warning on this one because `filename` comes from grafana configuration file
fileBytes, err := os.ReadFile(configFile)
if err != nil {
return nil, fmt.Errorf("%v: %w", "Failed to load LDAP config file", err)
}
// interpolate full toml string (it can contain ENV variables)
stringContent, err := setting.ExpandVar(string(fileBytes))
if err != nil {
return nil, fmt.Errorf("%v: %w", "Failed to expand variables", err)
}
_, err = toml.Decode(stringContent, result)
if err != nil {
return nil, fmt.Errorf("%v: %w", "Failed to load LDAP config file", err)
}
if len(result.Servers) == 0 {
return nil, fmt.Errorf("LDAP enabled but no LDAP servers defined in config file")
}
for _, server := range result.Servers {
// set default org id
err = assertNotEmptyCfg(server.SearchFilter, "search_filter")
if err != nil {
return nil, fmt.Errorf("%v: %w", "Failed to validate SearchFilter section", err)
}
err = assertNotEmptyCfg(server.SearchBaseDNs, "search_base_dns")
if err != nil {
return nil, fmt.Errorf("%v: %w", "Failed to validate SearchBaseDNs section", err)
}
for _, groupMap := range server.Groups {
if groupMap.OrgRole == "" && groupMap.IsGrafanaAdmin == nil {
return nil, fmt.Errorf("LDAP group mapping: organization role or grafana admin status is required")
}
if groupMap.OrgId == 0 {
groupMap.OrgId = 1
}
}
// set default timeout if unspecified
if server.Timeout == 0 {
server.Timeout = defaultTimeout
}
}
return result, nil
}
func assertNotEmptyCfg(val interface{}, propName string) error {
switch v := val.(type) {
case string:
if v == "" {
return fmt.Errorf("LDAP config file is missing option: %q", propName)
}
case []string:
if len(v) == 0 {
return fmt.Errorf("LDAP config file is missing option: %q", propName)
}
default:
fmt.Println("unknown")
}
return nil
}