forked from Deuxfleurs/bottin
Split off read and write functions in separate files
This commit is contained in:
parent
15745b1b39
commit
b27eb45239
3 changed files with 692 additions and 658 deletions
658
main.go
658
main.go
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@ -15,7 +15,6 @@ import (
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"math/rand"
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"os"
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"os/signal"
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"strings"
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"syscall"
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ldap "./ldapserver"
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@ -374,661 +373,4 @@ func (server *Server) handleBindInternal(state *State, r *message.BindRequest) (
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return ldap.LDAPResultInvalidCredentials, nil
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}
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func (server *Server) handleSearch(s ldap.UserState, w ldap.ResponseWriter, m *ldap.Message) {
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state := s.(*State)
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r := m.GetSearchRequest()
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code, err := server.handleSearchInternal(state, w, &r)
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res := ldap.NewResponse(code)
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if err != nil {
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res.SetDiagnosticMessage(err.Error())
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}
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w.Write(message.SearchResultDone(res))
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}
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func (server *Server) handleSearchInternal(state *State, w ldap.ResponseWriter, r *message.SearchRequest) (int, error) {
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if DEBUG {
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server.logger.Printf("-- SEARCH REQUEST: --")
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server.logger.Printf("Request BaseDn=%s", r.BaseObject())
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server.logger.Printf("Request Filter=%s", r.Filter())
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server.logger.Printf("Request FilterString=%s", r.FilterString())
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server.logger.Printf("Request Attributes=%s", r.Attributes())
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server.logger.Printf("Request TimeLimit=%d", r.TimeLimit().Int())
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}
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if !server.config.Acl.Check(&state.login, "read", string(r.BaseObject()), []string{}) {
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return ldap.LDAPResultInsufficientAccessRights, fmt.Errorf("Please specify a base object on which you have read rights")
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}
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baseObject, err := server.checkSuffix(string(r.BaseObject()), true)
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if err != nil {
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return ldap.LDAPResultInvalidDNSyntax, err
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}
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basePath, err := dnToConsul(baseObject)
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if err != nil {
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return ldap.LDAPResultInvalidDNSyntax, err
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}
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data, _, err := server.kv.List(basePath+"/", nil)
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if err != nil {
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return ldap.LDAPResultOperationsError, err
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}
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entries, err := parseConsulResult(data)
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if err != nil {
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return ldap.LDAPResultOperationsError, err
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}
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if DEBUG {
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server.logger.Printf("in %s: %#v", basePath+"/", data)
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server.logger.Printf("%#v", entries)
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}
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for dn, entry := range entries {
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// Filter out if we don't match requested filter
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matched, err := applyFilter(entry, r.Filter())
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if err != nil {
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return ldap.LDAPResultUnwillingToPerform, err
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}
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if !matched {
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continue
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}
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// Filter out if user is not allowed to read this
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if !server.config.Acl.Check(&state.login, "read", dn, []string{}) {
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continue
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}
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e := ldap.NewSearchResultEntry(dn)
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for attr, val := range entry {
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// If attribute is not in request, exclude it from returned entry
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if len(r.Attributes()) > 0 {
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found := false
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for _, requested := range r.Attributes() {
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if strings.EqualFold(string(requested), attr) {
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found = true
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break
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}
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}
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if !found {
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continue
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}
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}
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// If we are not allowed to read attribute, exclude it from returned entry
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if !server.config.Acl.Check(&state.login, "read", dn, []string{attr}) {
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continue
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}
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// Send result
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for _, v := range val {
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e.AddAttribute(message.AttributeDescription(attr),
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message.AttributeValue(v))
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}
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}
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w.Write(e)
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}
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return ldap.LDAPResultSuccess, nil
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}
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func applyFilter(entry Entry, filter message.Filter) (bool, error) {
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if fAnd, ok := filter.(message.FilterAnd); ok {
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for _, cond := range fAnd {
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res, err := applyFilter(entry, cond)
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if err != nil {
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return false, err
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}
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if !res {
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return false, nil
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}
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}
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return true, nil
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} else if fOr, ok := filter.(message.FilterOr); ok {
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for _, cond := range fOr {
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res, err := applyFilter(entry, cond)
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if err != nil {
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return false, err
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}
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if res {
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return true, nil
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}
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}
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return false, nil
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} else if fNot, ok := filter.(message.FilterNot); ok {
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res, err := applyFilter(entry, fNot.Filter)
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if err != nil {
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return false, err
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}
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return !res, nil
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} else if fPresent, ok := filter.(message.FilterPresent); ok {
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what := string(fPresent)
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// Case insensitive search
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for desc, values := range entry {
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if strings.EqualFold(what, desc) {
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return len(values) > 0, nil
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}
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}
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return false, nil
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} else if fEquality, ok := filter.(message.FilterEqualityMatch); ok {
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desc := string(fEquality.AttributeDesc())
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target := string(fEquality.AssertionValue())
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// Case insensitive attribute search
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for entry_desc, value := range entry {
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if strings.EqualFold(entry_desc, desc) {
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for _, val := range value {
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if val == target {
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return true, nil
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}
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}
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return false, nil
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}
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}
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return false, nil
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} else {
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return false, fmt.Errorf("Unsupported filter: %#v %T", filter, filter)
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}
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}
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func (server *Server) handleAdd(s ldap.UserState, w ldap.ResponseWriter, m *ldap.Message) {
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state := s.(*State)
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r := m.GetAddRequest()
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code, err := server.handleAddInternal(state, &r)
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res := ldap.NewResponse(code)
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if err != nil {
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res.SetDiagnosticMessage(err.Error())
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}
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if code == ldap.LDAPResultSuccess {
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server.logger.Printf("Successfully added %s", string(r.Entry()))
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} else {
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server.logger.Printf("Failed to add %s (%s)", string(r.Entry()), err)
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}
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w.Write(message.AddResponse(res))
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}
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func (server *Server) handleAddInternal(state *State, r *message.AddRequest) (int, error) {
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dn := string(r.Entry())
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_, err := server.checkSuffix(dn, false)
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if err != nil {
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return ldap.LDAPResultInvalidDNSyntax, err
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}
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dnSplit, err := parseDN(dn)
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if err != nil {
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return ldap.LDAPResultInvalidDNSyntax, err
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}
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// Check permissions
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attrListStr := []string{}
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for _, attribute := range r.Attributes() {
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attrListStr = append(attrListStr, string(attribute.Type_()))
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}
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if !server.config.Acl.Check(&state.login, "add", dn, attrListStr) {
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return ldap.LDAPResultInsufficientAccessRights, nil
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}
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// Check that object does not already exist
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exists, err := server.objectExists(dn)
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if err != nil {
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return ldap.LDAPResultOperationsError, err
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}
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if exists {
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return ldap.LDAPResultEntryAlreadyExists, nil
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}
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// Add object
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// If adding a group, track of who the members will be so that their memberOf field can be updated later
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var members []string = nil
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entry := Entry{}
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for _, attribute := range r.Attributes() {
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key := string(attribute.Type_())
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vals_str := []string{}
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for _, val := range attribute.Vals() {
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vals_str = append(vals_str, string(val))
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}
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// Fail if they are trying to write memberOf, we manage this ourselves
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err = checkRestrictedAttr(key)
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if err != nil {
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return ldap.LDAPResultObjectClassViolation, err
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}
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// If they are writing a member key, we have to check they are adding valid members
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if strings.EqualFold(key, "member") {
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members = vals_str
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for _, member := range members {
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_, err := server.checkSuffix(member, false)
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if err != nil {
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return ldap.LDAPResultInvalidDNSyntax, err
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}
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exists, err = server.objectExists(member)
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if err != nil {
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return ldap.LDAPResultOperationsError, err
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}
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if !exists {
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return ldap.LDAPResultNoSuchObject, fmt.Errorf(
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"Cannot add %s to members, it does not exist!",
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member)
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}
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}
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}
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entry[key] = vals_str
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}
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entry[ATTR_CREATORSNAME] = []string{state.login.user}
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entry[ATTR_CREATETIMESTAMP] = []string{genTimestamp()}
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entry[ATTR_ENTRYUUID] = []string{genUuid()}
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entry[dnSplit[0].Type] = []string{dnSplit[0].Value}
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err = server.addElements(dn, entry)
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if err != nil {
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return ldap.LDAPResultOperationsError, err
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}
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if members != nil {
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for _, member := range members {
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memberGroups, err := server.getAttribute(member, ATTR_MEMBEROF)
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if err != nil {
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return ldap.LDAPResultOperationsError, err
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}
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if memberGroups == nil {
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memberGroups = []string{}
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}
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alreadyMember := false
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for _, mb := range memberGroups {
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if mb == dn {
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alreadyMember = true
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server.logger.Printf("Warning: inconsistency detected, %s was memberOf %s at a time when it didn't exist!",
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member, dn)
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break
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}
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}
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if !alreadyMember {
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memberGroups = append(memberGroups, dn)
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err = server.addElements(member, Entry{
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ATTR_MEMBEROF: memberGroups,
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})
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if err != nil {
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return ldap.LDAPResultOperationsError, err
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}
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}
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}
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}
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return ldap.LDAPResultSuccess, nil
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}
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func (server *Server) handleCompare(s ldap.UserState, w ldap.ResponseWriter, m *ldap.Message) {
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state := s.(*State)
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r := m.GetCompareRequest()
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code, err := server.handleCompareInternal(state, &r)
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res := ldap.NewResponse(code)
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if err != nil {
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res.SetDiagnosticMessage(err.Error())
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}
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w.Write(message.CompareResponse(res))
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}
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func (server *Server) handleCompareInternal(state *State, r *message.CompareRequest) (int, error) {
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dn := string(r.Entry())
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attr := string(r.Ava().AttributeDesc())
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expected := string(r.Ava().AssertionValue())
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_, err := server.checkSuffix(dn, false)
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if err != nil {
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return ldap.LDAPResultInvalidDNSyntax, err
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}
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// Check permissions
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if !server.config.Acl.Check(&state.login, dn, "read", []string{attr}) {
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return ldap.LDAPResultInsufficientAccessRights, nil
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}
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// Do query
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exists, err := server.objectExists(dn)
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if err != nil {
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return ldap.LDAPResultOperationsError, err
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}
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if !exists {
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return ldap.LDAPResultNoSuchObject, fmt.Errorf("Not found: %s", dn)
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}
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values, err := server.getAttribute(dn, attr)
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if err != nil {
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return ldap.LDAPResultOperationsError, err
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}
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for _, v := range values {
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if v == expected {
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return ldap.LDAPResultCompareTrue, nil
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}
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}
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return ldap.LDAPResultCompareFalse, nil
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}
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func (server *Server) handleDelete(s ldap.UserState, w ldap.ResponseWriter, m *ldap.Message) {
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state := s.(*State)
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r := m.GetDeleteRequest()
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code, err := server.handleDeleteInternal(state, &r)
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res := ldap.NewResponse(code)
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if err != nil {
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res.SetDiagnosticMessage(err.Error())
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}
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if code == ldap.LDAPResultSuccess {
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server.logger.Printf("Successfully deleted %s", string(r))
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} else {
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server.logger.Printf("Failed to delete %s (%s)", string(r), err)
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}
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w.Write(message.DelResponse(res))
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}
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func (server *Server) handleDeleteInternal(state *State, r *message.DelRequest) (int, error) {
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dn := string(*r)
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_, err := server.checkSuffix(dn, false)
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if err != nil {
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return ldap.LDAPResultInvalidDNSyntax, err
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}
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// Check for delete permission
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if !server.config.Acl.Check(&state.login, "delete", dn, []string{}) {
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return ldap.LDAPResultInsufficientAccessRights, nil
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}
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// Check that this LDAP entry exists and has no children
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path, err := dnToConsul(dn)
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if err != nil {
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return ldap.LDAPResultInvalidDNSyntax, err
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}
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items, _, err := server.kv.List(path+"/", nil)
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if err != nil {
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return ldap.LDAPResultOperationsError, err
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}
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if len(items) == 0 {
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return ldap.LDAPResultNoSuchObject, fmt.Errorf("Not found: %s", dn)
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}
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for _, item := range items {
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itemDN, _, err := consulToDN(item.Key)
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if err != nil {
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continue
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}
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if itemDN != dn {
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return ldap.LDAPResultNotAllowedOnNonLeaf, fmt.Errorf(
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"Cannot delete %d as it has children", dn)
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}
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}
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// Retrieve group membership before we delete everything
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memberOf, err := server.getAttribute(dn, ATTR_MEMBEROF)
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if err != nil {
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return ldap.LDAPResultOperationsError, err
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}
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// Delete the LDAP entry
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_, err = server.kv.DeleteTree(path+"/", nil)
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if err != nil {
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return ldap.LDAPResultOperationsError, err
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}
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// Delete it from the member list of all the groups it was a member of
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if memberOf != nil {
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for _, group := range memberOf {
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groupMembers, err := server.getAttribute(dn, "member")
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if err != nil {
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return ldap.LDAPResultOperationsError, err
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}
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newMembers := []string{}
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for _, memb := range groupMembers {
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if memb != dn {
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newMembers = append(newMembers, memb)
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}
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}
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err = server.addElements(group, Entry{
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"member": newMembers,
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})
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if err != nil {
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return ldap.LDAPResultOperationsError, err
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}
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}
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}
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return ldap.LDAPResultSuccess, nil
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}
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func (server *Server) handleModify(s ldap.UserState, w ldap.ResponseWriter, m *ldap.Message) {
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state := s.(*State)
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r := m.GetModifyRequest()
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code, err := server.handleModifyInternal(state, &r)
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res := ldap.NewResponse(code)
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if err != nil {
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res.SetDiagnosticMessage(err.Error())
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}
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if code == ldap.LDAPResultSuccess {
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server.logger.Printf("Successfully modified %s", string(r.Object()))
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} else {
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server.logger.Printf("Failed to modifiy %s (%s)", string(r.Object()), err)
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}
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w.Write(message.ModifyResponse(res))
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}
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func (server *Server) handleModifyInternal(state *State, r *message.ModifyRequest) (int, error) {
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dn := string(r.Object())
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_, err := server.checkSuffix(dn, false)
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if err != nil {
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return ldap.LDAPResultInvalidDNSyntax, err
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}
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dnSplit, err := parseDN(dn)
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if err != nil {
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return ldap.LDAPResultInvalidDNSyntax, err
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}
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// First permission check with no particular attributes
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if !server.config.Acl.Check(&state.login, "modify", dn, []string{}) {
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return ldap.LDAPResultInsufficientAccessRights, nil
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}
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// Retrieve previous values (by the way, check object exists)
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path, err := dnToConsul(dn)
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if err != nil {
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return ldap.LDAPResultInvalidDNSyntax, err
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}
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items, _, err := server.kv.List(path+"/attribute=", nil)
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if err != nil {
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return ldap.LDAPResultOperationsError, err
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}
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if len(items) == 0 {
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return ldap.LDAPResultNoSuchObject, fmt.Errorf("Not found: %s", dn)
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}
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prevEntry := Entry{}
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for _, item := range items {
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itemDN, attr, err := consulToDN(item.Key)
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if err != nil {
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continue
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}
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if itemDN != dn {
|
||||
panic("itemDN != dn in handleModifyInternal")
|
||||
}
|
||||
vals, err := parseValue(item.Value)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
prevEntry[attr] = vals
|
||||
}
|
||||
|
||||
// Keep track of group members added/deleted
|
||||
addMembers, delMembers := []string{}, []string{}
|
||||
|
||||
// Produce new entry values to be saved
|
||||
newEntry := Entry{}
|
||||
for _, change := range r.Changes() {
|
||||
attr := string(change.Modification().Type_())
|
||||
values := change.Modification().Vals()
|
||||
|
||||
err = checkRestrictedAttr(attr)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultObjectClassViolation, err
|
||||
}
|
||||
if strings.EqualFold(attr, dnSplit[0].Type) {
|
||||
return ldap.LDAPResultObjectClassViolation, fmt.Errorf("%s may not be changed as it is part of object path", attr)
|
||||
}
|
||||
|
||||
// Check for permission to modify this attribute
|
||||
if !server.config.Acl.Check(&state.login, "modify", dn, []string{attr}) {
|
||||
return ldap.LDAPResultInsufficientAccessRights, nil
|
||||
}
|
||||
|
||||
if change.Operation() == ldap.ModifyRequestChangeOperationAdd {
|
||||
newEntry[attr] = prevEntry[attr]
|
||||
for _, val := range values {
|
||||
present := false
|
||||
for _, prevVal := range newEntry[attr] {
|
||||
if prevVal == string(val) {
|
||||
present = true
|
||||
break
|
||||
}
|
||||
}
|
||||
if !present {
|
||||
newEntry[attr] = append(newEntry[attr], string(val))
|
||||
if strings.EqualFold(attr, "member") {
|
||||
addMembers = append(addMembers, string(val))
|
||||
}
|
||||
}
|
||||
}
|
||||
} else if change.Operation() == ldap.ModifyRequestChangeOperationDelete {
|
||||
if len(values) == 0 {
|
||||
// Delete everything
|
||||
newEntry[attr] = []string{}
|
||||
if strings.EqualFold(attr, "member") {
|
||||
delMembers = append(delMembers, prevEntry[attr]...)
|
||||
}
|
||||
} else {
|
||||
// Delete only those specified
|
||||
newEntry[attr] = []string{}
|
||||
for _, prevVal := range prevEntry[attr] {
|
||||
keep := true
|
||||
for _, delVal := range values {
|
||||
if string(delVal) == prevVal {
|
||||
keep = false
|
||||
break
|
||||
}
|
||||
}
|
||||
if keep {
|
||||
newEntry[attr] = append(newEntry[attr], prevVal)
|
||||
} else {
|
||||
if strings.EqualFold(attr, "member") {
|
||||
delMembers = append(delMembers, prevVal)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
} else if change.Operation() == ldap.ModifyRequestChangeOperationReplace {
|
||||
newEntry[attr] = []string{}
|
||||
for _, newVal := range values {
|
||||
newEntry[attr] = append(newEntry[attr], string(newVal))
|
||||
}
|
||||
if strings.EqualFold(attr, "member") {
|
||||
for _, newMem := range newEntry[attr] {
|
||||
mustAdd := true
|
||||
for _, prevMem := range prevEntry[attr] {
|
||||
if prevMem == newMem {
|
||||
mustAdd = false
|
||||
break
|
||||
}
|
||||
}
|
||||
if mustAdd {
|
||||
addMembers = append(addMembers, newMem)
|
||||
}
|
||||
}
|
||||
for _, prevMem := range prevEntry[attr] {
|
||||
mustDel := true
|
||||
for _, newMem := range newEntry[attr] {
|
||||
if newMem == prevMem {
|
||||
mustDel = false
|
||||
break
|
||||
}
|
||||
}
|
||||
if mustDel {
|
||||
delMembers = append(delMembers, prevMem)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Check that added members actually exist
|
||||
for _, addMem := range addMembers {
|
||||
exists, err := server.objectExists(addMem)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
if !exists {
|
||||
return ldap.LDAPResultNoSuchObject, fmt.Errorf(
|
||||
"Cannot add member %s, it does not exist", addMem)
|
||||
}
|
||||
}
|
||||
|
||||
newEntry[ATTR_MODIFIERSNAME] = []string{state.login.user}
|
||||
newEntry[ATTR_MODIFYTIMESTAMP] = []string{genTimestamp()}
|
||||
|
||||
// Save the edited values
|
||||
server.addElements(dn, newEntry)
|
||||
|
||||
// Update memberOf for added members and deleted members
|
||||
for _, addMem := range addMembers {
|
||||
memberOf, err := server.getAttribute(addMem, ATTR_MEMBEROF)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
if memberOf == nil {
|
||||
memberOf = []string{}
|
||||
}
|
||||
memberOf = append(memberOf, dn)
|
||||
err = server.addElements(addMem, Entry{ATTR_MEMBEROF: memberOf})
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
}
|
||||
|
||||
for _, delMem := range delMembers {
|
||||
memberOf, err := server.getAttribute(delMem, ATTR_MEMBEROF)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
if memberOf == nil {
|
||||
memberOf = []string{}
|
||||
}
|
||||
newMemberOf := []string{}
|
||||
for _, g := range memberOf {
|
||||
if g != dn {
|
||||
newMemberOf = append(newMemberOf, g)
|
||||
}
|
||||
}
|
||||
|
||||
err = server.addElements(delMem, Entry{ATTR_MEMBEROF: newMemberOf})
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
}
|
||||
|
||||
return ldap.LDAPResultSuccess, nil
|
||||
}
|
||||
|
|
|
|||
220
read.go
Normal file
220
read.go
Normal file
|
|
@ -0,0 +1,220 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"strings"
|
||||
|
||||
ldap "./ldapserver"
|
||||
message "github.com/vjeantet/goldap/message"
|
||||
)
|
||||
|
||||
|
||||
// Compare request -------------------------
|
||||
|
||||
func (server *Server) handleCompare(s ldap.UserState, w ldap.ResponseWriter, m *ldap.Message) {
|
||||
state := s.(*State)
|
||||
r := m.GetCompareRequest()
|
||||
|
||||
code, err := server.handleCompareInternal(state, &r)
|
||||
|
||||
res := ldap.NewResponse(code)
|
||||
if err != nil {
|
||||
res.SetDiagnosticMessage(err.Error())
|
||||
}
|
||||
w.Write(message.CompareResponse(res))
|
||||
}
|
||||
|
||||
func (server *Server) handleCompareInternal(state *State, r *message.CompareRequest) (int, error) {
|
||||
dn := string(r.Entry())
|
||||
attr := string(r.Ava().AttributeDesc())
|
||||
expected := string(r.Ava().AssertionValue())
|
||||
|
||||
_, err := server.checkSuffix(dn, false)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultInvalidDNSyntax, err
|
||||
}
|
||||
|
||||
// Check permissions
|
||||
if !server.config.Acl.Check(&state.login, dn, "read", []string{attr}) {
|
||||
return ldap.LDAPResultInsufficientAccessRights, nil
|
||||
}
|
||||
|
||||
// Do query
|
||||
exists, err := server.objectExists(dn)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
if !exists {
|
||||
return ldap.LDAPResultNoSuchObject, fmt.Errorf("Not found: %s", dn)
|
||||
}
|
||||
|
||||
values, err := server.getAttribute(dn, attr)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
|
||||
for _, v := range values {
|
||||
if v == expected {
|
||||
return ldap.LDAPResultCompareTrue, nil
|
||||
}
|
||||
}
|
||||
|
||||
return ldap.LDAPResultCompareFalse, nil
|
||||
}
|
||||
|
||||
|
||||
// Search request -------------------------
|
||||
|
||||
func (server *Server) handleSearch(s ldap.UserState, w ldap.ResponseWriter, m *ldap.Message) {
|
||||
state := s.(*State)
|
||||
r := m.GetSearchRequest()
|
||||
|
||||
code, err := server.handleSearchInternal(state, w, &r)
|
||||
|
||||
res := ldap.NewResponse(code)
|
||||
if err != nil {
|
||||
res.SetDiagnosticMessage(err.Error())
|
||||
}
|
||||
w.Write(message.SearchResultDone(res))
|
||||
}
|
||||
|
||||
func (server *Server) handleSearchInternal(state *State, w ldap.ResponseWriter, r *message.SearchRequest) (int, error) {
|
||||
if DEBUG {
|
||||
server.logger.Printf("-- SEARCH REQUEST: --")
|
||||
server.logger.Printf("Request BaseDn=%s", r.BaseObject())
|
||||
server.logger.Printf("Request Filter=%s", r.Filter())
|
||||
server.logger.Printf("Request FilterString=%s", r.FilterString())
|
||||
server.logger.Printf("Request Attributes=%s", r.Attributes())
|
||||
server.logger.Printf("Request TimeLimit=%d", r.TimeLimit().Int())
|
||||
}
|
||||
|
||||
if !server.config.Acl.Check(&state.login, "read", string(r.BaseObject()), []string{}) {
|
||||
return ldap.LDAPResultInsufficientAccessRights, fmt.Errorf("Please specify a base object on which you have read rights")
|
||||
}
|
||||
|
||||
baseObject, err := server.checkSuffix(string(r.BaseObject()), true)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultInvalidDNSyntax, err
|
||||
}
|
||||
basePath, err := dnToConsul(baseObject)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultInvalidDNSyntax, err
|
||||
}
|
||||
|
||||
data, _, err := server.kv.List(basePath+"/", nil)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
|
||||
entries, err := parseConsulResult(data)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
if DEBUG {
|
||||
server.logger.Printf("in %s: %#v", basePath+"/", data)
|
||||
server.logger.Printf("%#v", entries)
|
||||
}
|
||||
|
||||
for dn, entry := range entries {
|
||||
// Filter out if we don't match requested filter
|
||||
matched, err := applyFilter(entry, r.Filter())
|
||||
if err != nil {
|
||||
return ldap.LDAPResultUnwillingToPerform, err
|
||||
}
|
||||
if !matched {
|
||||
continue
|
||||
}
|
||||
|
||||
// Filter out if user is not allowed to read this
|
||||
if !server.config.Acl.Check(&state.login, "read", dn, []string{}) {
|
||||
continue
|
||||
}
|
||||
|
||||
e := ldap.NewSearchResultEntry(dn)
|
||||
for attr, val := range entry {
|
||||
// If attribute is not in request, exclude it from returned entry
|
||||
if len(r.Attributes()) > 0 {
|
||||
found := false
|
||||
for _, requested := range r.Attributes() {
|
||||
if strings.EqualFold(string(requested), attr) {
|
||||
found = true
|
||||
break
|
||||
}
|
||||
}
|
||||
if !found {
|
||||
continue
|
||||
}
|
||||
}
|
||||
// If we are not allowed to read attribute, exclude it from returned entry
|
||||
if !server.config.Acl.Check(&state.login, "read", dn, []string{attr}) {
|
||||
continue
|
||||
}
|
||||
// Send result
|
||||
for _, v := range val {
|
||||
e.AddAttribute(message.AttributeDescription(attr),
|
||||
message.AttributeValue(v))
|
||||
}
|
||||
}
|
||||
w.Write(e)
|
||||
}
|
||||
|
||||
return ldap.LDAPResultSuccess, nil
|
||||
}
|
||||
|
||||
func applyFilter(entry Entry, filter message.Filter) (bool, error) {
|
||||
if fAnd, ok := filter.(message.FilterAnd); ok {
|
||||
for _, cond := range fAnd {
|
||||
res, err := applyFilter(entry, cond)
|
||||
if err != nil {
|
||||
return false, err
|
||||
}
|
||||
if !res {
|
||||
return false, nil
|
||||
}
|
||||
}
|
||||
return true, nil
|
||||
} else if fOr, ok := filter.(message.FilterOr); ok {
|
||||
for _, cond := range fOr {
|
||||
res, err := applyFilter(entry, cond)
|
||||
if err != nil {
|
||||
return false, err
|
||||
}
|
||||
if res {
|
||||
return true, nil
|
||||
}
|
||||
}
|
||||
return false, nil
|
||||
} else if fNot, ok := filter.(message.FilterNot); ok {
|
||||
res, err := applyFilter(entry, fNot.Filter)
|
||||
if err != nil {
|
||||
return false, err
|
||||
}
|
||||
return !res, nil
|
||||
} else if fPresent, ok := filter.(message.FilterPresent); ok {
|
||||
what := string(fPresent)
|
||||
// Case insensitive search
|
||||
for desc, values := range entry {
|
||||
if strings.EqualFold(what, desc) {
|
||||
return len(values) > 0, nil
|
||||
}
|
||||
}
|
||||
return false, nil
|
||||
} else if fEquality, ok := filter.(message.FilterEqualityMatch); ok {
|
||||
desc := string(fEquality.AttributeDesc())
|
||||
target := string(fEquality.AssertionValue())
|
||||
// Case insensitive attribute search
|
||||
for entry_desc, value := range entry {
|
||||
if strings.EqualFold(entry_desc, desc) {
|
||||
for _, val := range value {
|
||||
if val == target {
|
||||
return true, nil
|
||||
}
|
||||
}
|
||||
return false, nil
|
||||
}
|
||||
}
|
||||
return false, nil
|
||||
} else {
|
||||
return false, fmt.Errorf("Unsupported filter: %#v %T", filter, filter)
|
||||
}
|
||||
}
|
||||
472
write.go
Normal file
472
write.go
Normal file
|
|
@ -0,0 +1,472 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"strings"
|
||||
|
||||
ldap "./ldapserver"
|
||||
message "github.com/vjeantet/goldap/message"
|
||||
)
|
||||
|
||||
|
||||
// Add request ------------------------
|
||||
|
||||
func (server *Server) handleAdd(s ldap.UserState, w ldap.ResponseWriter, m *ldap.Message) {
|
||||
state := s.(*State)
|
||||
r := m.GetAddRequest()
|
||||
|
||||
code, err := server.handleAddInternal(state, &r)
|
||||
|
||||
res := ldap.NewResponse(code)
|
||||
if err != nil {
|
||||
res.SetDiagnosticMessage(err.Error())
|
||||
}
|
||||
if code == ldap.LDAPResultSuccess {
|
||||
server.logger.Printf("Successfully added %s", string(r.Entry()))
|
||||
} else {
|
||||
server.logger.Printf("Failed to add %s (%s)", string(r.Entry()), err)
|
||||
}
|
||||
w.Write(message.AddResponse(res))
|
||||
}
|
||||
|
||||
func (server *Server) handleAddInternal(state *State, r *message.AddRequest) (int, error) {
|
||||
dn := string(r.Entry())
|
||||
|
||||
_, err := server.checkSuffix(dn, false)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultInvalidDNSyntax, err
|
||||
}
|
||||
|
||||
dnSplit, err := parseDN(dn)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultInvalidDNSyntax, err
|
||||
}
|
||||
|
||||
// Check permissions
|
||||
attrListStr := []string{}
|
||||
for _, attribute := range r.Attributes() {
|
||||
attrListStr = append(attrListStr, string(attribute.Type_()))
|
||||
}
|
||||
if !server.config.Acl.Check(&state.login, "add", dn, attrListStr) {
|
||||
return ldap.LDAPResultInsufficientAccessRights, nil
|
||||
}
|
||||
|
||||
// Check that object does not already exist
|
||||
exists, err := server.objectExists(dn)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
if exists {
|
||||
return ldap.LDAPResultEntryAlreadyExists, nil
|
||||
}
|
||||
|
||||
// Add object
|
||||
|
||||
// If adding a group, track of who the members will be so that their memberOf field can be updated later
|
||||
var members []string = nil
|
||||
|
||||
entry := Entry{}
|
||||
for _, attribute := range r.Attributes() {
|
||||
key := string(attribute.Type_())
|
||||
vals_str := []string{}
|
||||
for _, val := range attribute.Vals() {
|
||||
vals_str = append(vals_str, string(val))
|
||||
}
|
||||
|
||||
// Fail if they are trying to write memberOf, we manage this ourselves
|
||||
err = checkRestrictedAttr(key)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultObjectClassViolation, err
|
||||
}
|
||||
// If they are writing a member key, we have to check they are adding valid members
|
||||
if strings.EqualFold(key, "member") {
|
||||
members = vals_str
|
||||
for _, member := range members {
|
||||
_, err := server.checkSuffix(member, false)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultInvalidDNSyntax, err
|
||||
}
|
||||
exists, err = server.objectExists(member)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
if !exists {
|
||||
return ldap.LDAPResultNoSuchObject, fmt.Errorf(
|
||||
"Cannot add %s to members, it does not exist!",
|
||||
member)
|
||||
}
|
||||
}
|
||||
}
|
||||
entry[key] = vals_str
|
||||
}
|
||||
|
||||
entry[ATTR_CREATORSNAME] = []string{state.login.user}
|
||||
entry[ATTR_CREATETIMESTAMP] = []string{genTimestamp()}
|
||||
entry[ATTR_ENTRYUUID] = []string{genUuid()}
|
||||
entry[dnSplit[0].Type] = []string{dnSplit[0].Value}
|
||||
|
||||
err = server.addElements(dn, entry)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
|
||||
if members != nil {
|
||||
for _, member := range members {
|
||||
memberGroups, err := server.getAttribute(member, ATTR_MEMBEROF)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
if memberGroups == nil {
|
||||
memberGroups = []string{}
|
||||
}
|
||||
|
||||
alreadyMember := false
|
||||
for _, mb := range memberGroups {
|
||||
if mb == dn {
|
||||
alreadyMember = true
|
||||
server.logger.Printf("Warning: inconsistency detected, %s was memberOf %s at a time when it didn't exist!",
|
||||
member, dn)
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
if !alreadyMember {
|
||||
memberGroups = append(memberGroups, dn)
|
||||
err = server.addElements(member, Entry{
|
||||
ATTR_MEMBEROF: memberGroups,
|
||||
})
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return ldap.LDAPResultSuccess, nil
|
||||
}
|
||||
|
||||
|
||||
// Delete request ------------------------
|
||||
|
||||
func (server *Server) handleDelete(s ldap.UserState, w ldap.ResponseWriter, m *ldap.Message) {
|
||||
state := s.(*State)
|
||||
r := m.GetDeleteRequest()
|
||||
|
||||
code, err := server.handleDeleteInternal(state, &r)
|
||||
|
||||
res := ldap.NewResponse(code)
|
||||
if err != nil {
|
||||
res.SetDiagnosticMessage(err.Error())
|
||||
}
|
||||
if code == ldap.LDAPResultSuccess {
|
||||
server.logger.Printf("Successfully deleted %s", string(r))
|
||||
} else {
|
||||
server.logger.Printf("Failed to delete %s (%s)", string(r), err)
|
||||
}
|
||||
w.Write(message.DelResponse(res))
|
||||
}
|
||||
|
||||
func (server *Server) handleDeleteInternal(state *State, r *message.DelRequest) (int, error) {
|
||||
dn := string(*r)
|
||||
|
||||
_, err := server.checkSuffix(dn, false)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultInvalidDNSyntax, err
|
||||
}
|
||||
|
||||
// Check for delete permission
|
||||
if !server.config.Acl.Check(&state.login, "delete", dn, []string{}) {
|
||||
return ldap.LDAPResultInsufficientAccessRights, nil
|
||||
}
|
||||
|
||||
// Check that this LDAP entry exists and has no children
|
||||
path, err := dnToConsul(dn)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultInvalidDNSyntax, err
|
||||
}
|
||||
|
||||
items, _, err := server.kv.List(path+"/", nil)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
|
||||
if len(items) == 0 {
|
||||
return ldap.LDAPResultNoSuchObject, fmt.Errorf("Not found: %s", dn)
|
||||
}
|
||||
for _, item := range items {
|
||||
itemDN, _, err := consulToDN(item.Key)
|
||||
if err != nil {
|
||||
continue
|
||||
}
|
||||
if itemDN != dn {
|
||||
return ldap.LDAPResultNotAllowedOnNonLeaf, fmt.Errorf(
|
||||
"Cannot delete %d as it has children", dn)
|
||||
}
|
||||
}
|
||||
|
||||
// Retrieve group membership before we delete everything
|
||||
memberOf, err := server.getAttribute(dn, ATTR_MEMBEROF)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
|
||||
// Delete the LDAP entry
|
||||
_, err = server.kv.DeleteTree(path+"/", nil)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
|
||||
// Delete it from the member list of all the groups it was a member of
|
||||
if memberOf != nil {
|
||||
for _, group := range memberOf {
|
||||
groupMembers, err := server.getAttribute(dn, "member")
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
|
||||
newMembers := []string{}
|
||||
for _, memb := range groupMembers {
|
||||
if memb != dn {
|
||||
newMembers = append(newMembers, memb)
|
||||
}
|
||||
}
|
||||
|
||||
err = server.addElements(group, Entry{
|
||||
"member": newMembers,
|
||||
})
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return ldap.LDAPResultSuccess, nil
|
||||
}
|
||||
|
||||
|
||||
// Modify request ------------------------
|
||||
|
||||
func (server *Server) handleModify(s ldap.UserState, w ldap.ResponseWriter, m *ldap.Message) {
|
||||
state := s.(*State)
|
||||
r := m.GetModifyRequest()
|
||||
|
||||
code, err := server.handleModifyInternal(state, &r)
|
||||
|
||||
res := ldap.NewResponse(code)
|
||||
if err != nil {
|
||||
res.SetDiagnosticMessage(err.Error())
|
||||
}
|
||||
if code == ldap.LDAPResultSuccess {
|
||||
server.logger.Printf("Successfully modified %s", string(r.Object()))
|
||||
} else {
|
||||
server.logger.Printf("Failed to modifiy %s (%s)", string(r.Object()), err)
|
||||
}
|
||||
w.Write(message.ModifyResponse(res))
|
||||
}
|
||||
|
||||
func (server *Server) handleModifyInternal(state *State, r *message.ModifyRequest) (int, error) {
|
||||
dn := string(r.Object())
|
||||
|
||||
_, err := server.checkSuffix(dn, false)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultInvalidDNSyntax, err
|
||||
}
|
||||
|
||||
dnSplit, err := parseDN(dn)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultInvalidDNSyntax, err
|
||||
}
|
||||
|
||||
// First permission check with no particular attributes
|
||||
if !server.config.Acl.Check(&state.login, "modify", dn, []string{}) {
|
||||
return ldap.LDAPResultInsufficientAccessRights, nil
|
||||
}
|
||||
|
||||
// Retrieve previous values (by the way, check object exists)
|
||||
path, err := dnToConsul(dn)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultInvalidDNSyntax, err
|
||||
}
|
||||
|
||||
items, _, err := server.kv.List(path+"/attribute=", nil)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
|
||||
if len(items) == 0 {
|
||||
return ldap.LDAPResultNoSuchObject, fmt.Errorf("Not found: %s", dn)
|
||||
}
|
||||
|
||||
prevEntry := Entry{}
|
||||
for _, item := range items {
|
||||
itemDN, attr, err := consulToDN(item.Key)
|
||||
if err != nil {
|
||||
continue
|
||||
}
|
||||
if itemDN != dn {
|
||||
panic("itemDN != dn in handleModifyInternal")
|
||||
}
|
||||
vals, err := parseValue(item.Value)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
prevEntry[attr] = vals
|
||||
}
|
||||
|
||||
// Keep track of group members added/deleted
|
||||
addMembers, delMembers := []string{}, []string{}
|
||||
|
||||
// Produce new entry values to be saved
|
||||
newEntry := Entry{}
|
||||
for _, change := range r.Changes() {
|
||||
attr := string(change.Modification().Type_())
|
||||
values := change.Modification().Vals()
|
||||
|
||||
err = checkRestrictedAttr(attr)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultObjectClassViolation, err
|
||||
}
|
||||
if strings.EqualFold(attr, dnSplit[0].Type) {
|
||||
return ldap.LDAPResultObjectClassViolation, fmt.Errorf("%s may not be changed as it is part of object path", attr)
|
||||
}
|
||||
|
||||
// Check for permission to modify this attribute
|
||||
if !server.config.Acl.Check(&state.login, "modify", dn, []string{attr}) {
|
||||
return ldap.LDAPResultInsufficientAccessRights, nil
|
||||
}
|
||||
|
||||
if change.Operation() == ldap.ModifyRequestChangeOperationAdd {
|
||||
newEntry[attr] = prevEntry[attr]
|
||||
for _, val := range values {
|
||||
present := false
|
||||
for _, prevVal := range newEntry[attr] {
|
||||
if prevVal == string(val) {
|
||||
present = true
|
||||
break
|
||||
}
|
||||
}
|
||||
if !present {
|
||||
newEntry[attr] = append(newEntry[attr], string(val))
|
||||
if strings.EqualFold(attr, "member") {
|
||||
addMembers = append(addMembers, string(val))
|
||||
}
|
||||
}
|
||||
}
|
||||
} else if change.Operation() == ldap.ModifyRequestChangeOperationDelete {
|
||||
if len(values) == 0 {
|
||||
// Delete everything
|
||||
newEntry[attr] = []string{}
|
||||
if strings.EqualFold(attr, "member") {
|
||||
delMembers = append(delMembers, prevEntry[attr]...)
|
||||
}
|
||||
} else {
|
||||
// Delete only those specified
|
||||
newEntry[attr] = []string{}
|
||||
for _, prevVal := range prevEntry[attr] {
|
||||
keep := true
|
||||
for _, delVal := range values {
|
||||
if string(delVal) == prevVal {
|
||||
keep = false
|
||||
break
|
||||
}
|
||||
}
|
||||
if keep {
|
||||
newEntry[attr] = append(newEntry[attr], prevVal)
|
||||
} else {
|
||||
if strings.EqualFold(attr, "member") {
|
||||
delMembers = append(delMembers, prevVal)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
} else if change.Operation() == ldap.ModifyRequestChangeOperationReplace {
|
||||
newEntry[attr] = []string{}
|
||||
for _, newVal := range values {
|
||||
newEntry[attr] = append(newEntry[attr], string(newVal))
|
||||
}
|
||||
if strings.EqualFold(attr, "member") {
|
||||
for _, newMem := range newEntry[attr] {
|
||||
mustAdd := true
|
||||
for _, prevMem := range prevEntry[attr] {
|
||||
if prevMem == newMem {
|
||||
mustAdd = false
|
||||
break
|
||||
}
|
||||
}
|
||||
if mustAdd {
|
||||
addMembers = append(addMembers, newMem)
|
||||
}
|
||||
}
|
||||
for _, prevMem := range prevEntry[attr] {
|
||||
mustDel := true
|
||||
for _, newMem := range newEntry[attr] {
|
||||
if newMem == prevMem {
|
||||
mustDel = false
|
||||
break
|
||||
}
|
||||
}
|
||||
if mustDel {
|
||||
delMembers = append(delMembers, prevMem)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Check that added members actually exist
|
||||
for _, addMem := range addMembers {
|
||||
exists, err := server.objectExists(addMem)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
if !exists {
|
||||
return ldap.LDAPResultNoSuchObject, fmt.Errorf(
|
||||
"Cannot add member %s, it does not exist", addMem)
|
||||
}
|
||||
}
|
||||
|
||||
newEntry[ATTR_MODIFIERSNAME] = []string{state.login.user}
|
||||
newEntry[ATTR_MODIFYTIMESTAMP] = []string{genTimestamp()}
|
||||
|
||||
// Save the edited values
|
||||
server.addElements(dn, newEntry)
|
||||
|
||||
// Update memberOf for added members and deleted members
|
||||
for _, addMem := range addMembers {
|
||||
memberOf, err := server.getAttribute(addMem, ATTR_MEMBEROF)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
if memberOf == nil {
|
||||
memberOf = []string{}
|
||||
}
|
||||
memberOf = append(memberOf, dn)
|
||||
err = server.addElements(addMem, Entry{ATTR_MEMBEROF: memberOf})
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
}
|
||||
|
||||
for _, delMem := range delMembers {
|
||||
memberOf, err := server.getAttribute(delMem, ATTR_MEMBEROF)
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
if memberOf == nil {
|
||||
memberOf = []string{}
|
||||
}
|
||||
newMemberOf := []string{}
|
||||
for _, g := range memberOf {
|
||||
if g != dn {
|
||||
newMemberOf = append(newMemberOf, g)
|
||||
}
|
||||
}
|
||||
|
||||
err = server.addElements(delMem, Entry{ATTR_MEMBEROF: newMemberOf})
|
||||
if err != nil {
|
||||
return ldap.LDAPResultOperationsError, err
|
||||
}
|
||||
}
|
||||
|
||||
return ldap.LDAPResultSuccess, nil
|
||||
}
|
||||
Loading…
Reference in a new issue