140 lines
2.8 KiB
Go
140 lines
2.8 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"log"
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"strings"
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"time"
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uuid "github.com/google/uuid"
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consul "github.com/hashicorp/consul/api"
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)
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func dnToConsul(dn string) (string, error) {
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if strings.Contains(dn, "/") {
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return "", fmt.Errorf("DN %s contains a /", dn)
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}
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rdns := strings.Split(dn, ",")
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// Reverse rdns
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for i, j := 0, len(rdns)-1; i < j; i, j = i+1, j-1 {
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rdns[i], rdns[j] = rdns[j], rdns[i]
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}
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return strings.Join(rdns, "/"), nil
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}
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func consulToDN(key string) (string, string, error) {
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path := strings.Split(key, "/")
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dn := ""
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for _, cpath := range path {
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if cpath == "" {
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continue
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}
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kv := strings.Split(cpath, "=")
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if len(kv) == 2 && kv[0] == "attribute" {
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return dn, kv[1], nil
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}
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if dn != "" {
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dn = "," + dn
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}
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dn = cpath + dn
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}
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return "", "", fmt.Errorf("Consul key %s does not end with attribute=something", key)
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}
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func parseValue(value []byte) ([]string, error) {
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val := []string{}
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err := json.Unmarshal(value, &val)
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if err == nil {
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return val, nil
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}
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val2 := ""
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err = json.Unmarshal(value, &val2)
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if err == nil {
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return []string{val2}, nil
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}
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return nil, fmt.Errorf("Not a string or list of strings: %s", value)
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}
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func parseConsulResult(data []*consul.KVPair) (map[string]Entry, error) {
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aggregator := map[string]Entry{}
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for _, kv := range data {
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dn, attr, err := consulToDN(kv.Key)
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if err != nil {
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continue
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}
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if _, exists := aggregator[dn]; !exists {
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aggregator[dn] = Entry{}
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}
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value, err := parseValue(kv.Value)
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if err != nil {
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return nil, err
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}
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aggregator[dn][attr] = value
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}
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return aggregator, nil
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}
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type DNComponent struct {
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Type string
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Value string
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}
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func parseDN(dn string) ([]DNComponent, error) {
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rdns := strings.Split(dn, ",")
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ret := []DNComponent{}
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for _, rdn := range rdns {
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splits := strings.Split(rdn, "=")
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if len(splits) != 2 {
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return nil, fmt.Errorf("Wrong DN component: %s (expected type=value)", rdn)
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}
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ret = append(ret, DNComponent{
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Type: splits[0],
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Value: splits[1],
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})
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}
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return ret, nil
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}
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func checkRestrictedAttr(attr string) error {
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RESTRICTED_ATTRS := []string{
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ATTR_MEMBEROF,
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ATTR_ENTRYUUID,
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ATTR_CREATORSNAME,
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ATTR_CREATETIMESTAMP,
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ATTR_MODIFIERSNAME,
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ATTR_MODIFYTIMESTAMP,
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}
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if strings.EqualFold(attr, ATTR_MEMBEROF) {
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return fmt.Errorf("memberOf cannot be defined directly, membership must be specified in the group itself")
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}
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for _, s := range RESTRICTED_ATTRS {
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if strings.EqualFold(attr, s) {
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return fmt.Errorf("Attribute %s is restricted and may only be set by the system", s)
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}
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}
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return nil
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}
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func genTimestamp() string {
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return time.Now().Format("20060102150405Z")
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}
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func genUuid() string {
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uuid, err := uuid.NewRandom()
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if err != nil {
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log.Panicf("UUID generation error: %s", err)
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}
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return uuid.String()
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}
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