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Fix missing procedure for delete membership & "better" failure handling

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After an object has been updated, membership information must be
propagated to other object. Such operations may fail when calling consul
but if they do we don't return fail immediatly returning an error code
any more.  Instead we just print all the errors to our logs and try to
process the remaining updates.
This commit is contained in:
Alex 2020-01-26 22:22:38 +01:00
parent b27eb45239
commit f8c726dcda
3 changed files with 74 additions and 21 deletions
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2
Makefile
View file

@ -1,6 +1,6 @@
all: gobottin
gobottin: main.go ssha.go util.go acl.go
gobottin: main.go ssha.go util.go acl.go read.go write.go
go get -d -v
CGO_ENABLED=0 GOOS=linux go build -a -v

1
main.go
View file

@ -25,6 +25,7 @@ import (
const DEBUG = false
const ATTR_USERPASSWORD = "userpassword"
const ATTR_MEMBER = "member"
const ATTR_MEMBEROF = "memberof"
const ATTR_ENTRYUUID = "entryuuid"
const ATTR_CREATORSNAME = "creatorsname"

92
write.go
View file

@ -60,11 +60,10 @@ func (server *Server) handleAddInternal(state *State, r *message.AddRequest) (in
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
// Check attributes
entry := Entry{}
for _, attribute := range r.Attributes() {
key := string(attribute.Type_())
@ -79,7 +78,7 @@ func (server *Server) handleAddInternal(state *State, r *message.AddRequest) (in
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") {
if strings.EqualFold(key, ATTR_MEMBER) {
members = vals_str
for _, member := range members {
_, err := server.checkSuffix(member, false)
@ -105,16 +104,21 @@ func (server *Server) handleAddInternal(state *State, r *message.AddRequest) (in
entry[ATTR_ENTRYUUID] = []string{genUuid()}
entry[dnSplit[0].Type] = []string{dnSplit[0].Value}
// Add our intem in the DB
err = server.addElements(dn, entry)
if err != nil {
return ldap.LDAPResultOperationsError, err
}
// ~~ from this point on, our operation succeeded ~~
// ~~ future errors cause inconsistencies in the DB and are logged ~~
// If our item has a member list, add it to all of its member's memberOf attribute
if members != nil {
for _, member := range members {
memberGroups, err := server.getAttribute(member, ATTR_MEMBEROF)
if err != nil {
return ldap.LDAPResultOperationsError, err
server.logger.Printf("Could not add %s to memberOf of %s: %s", dn, member, err)
continue
}
if memberGroups == nil {
memberGroups = []string{}
@ -136,7 +140,7 @@ func (server *Server) handleAddInternal(state *State, r *message.AddRequest) (in
ATTR_MEMBEROF: memberGroups,
})
if err != nil {
return ldap.LDAPResultOperationsError, err
server.logger.Printf("Could not add %s to memberOf of %s: %s", dn, member, err)
}
}
}
@ -209,19 +213,26 @@ func (server *Server) handleDeleteInternal(state *State, r *message.DelRequest)
if err != nil {
return ldap.LDAPResultOperationsError, err
}
memberList, err := server.getAttribute(dn, ATTR_MEMBER)
if err != nil {
return ldap.LDAPResultOperationsError, err
}
// Delete the LDAP entry
_, err = server.kv.DeleteTree(path+"/", nil)
if err != nil {
return ldap.LDAPResultOperationsError, err
}
// ~~ from this point on, our operation succeeded ~~
// ~~ future errors cause inconsistencies in the DB and are logged ~~
// 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")
groupMembers, err := server.getAttribute(group, ATTR_MEMBER)
if err != nil {
return ldap.LDAPResultOperationsError, err
server.logger.Printf("Could not remove %s from members of %s: %s", dn, group, err)
continue
}
newMembers := []string{}
@ -232,10 +243,35 @@ func (server *Server) handleDeleteInternal(state *State, r *message.DelRequest)
}
err = server.addElements(group, Entry{
"member": newMembers,
ATTR_MEMBER: newMembers,
})
if err != nil {
return ldap.LDAPResultOperationsError, err
server.logger.Printf("Could not remove %s from members of %s: %s", dn, group, err)
}
}
}
// Delete it from all of its member's memberOf info
if memberList != nil {
for _, member := range memberList {
memberOf, err := server.getAttribute(member, ATTR_MEMBEROF)
if err != nil || memberOf == nil {
server.logger.Printf("Could not remove %s from memberOf of %s: %s", dn, member, err)
continue
}
newMemberOf := []string{}
for _, group := range memberOf {
if group != dn {
newMemberOf = append(newMemberOf, group)
}
}
err = server.addElements(member, Entry{
ATTR_MEMBEROF: newMemberOf,
})
if err != nil {
server.logger.Printf("Could not remove %s from memberOf of %s: %s", dn, member, err)
}
}
}
@ -347,7 +383,7 @@ func (server *Server) handleModifyInternal(state *State, r *message.ModifyReques
}
if !present {
newEntry[attr] = append(newEntry[attr], string(val))
if strings.EqualFold(attr, "member") {
if strings.EqualFold(attr, ATTR_MEMBER) {
addMembers = append(addMembers, string(val))
}
}
@ -356,7 +392,7 @@ func (server *Server) handleModifyInternal(state *State, r *message.ModifyReques
if len(values) == 0 {
// Delete everything
newEntry[attr] = []string{}
if strings.EqualFold(attr, "member") {
if strings.EqualFold(attr, ATTR_MEMBER) {
delMembers = append(delMembers, prevEntry[attr]...)
}
} else {
@ -373,7 +409,7 @@ func (server *Server) handleModifyInternal(state *State, r *message.ModifyReques
if keep {
newEntry[attr] = append(newEntry[attr], prevVal)
} else {
if strings.EqualFold(attr, "member") {
if strings.EqualFold(attr, ATTR_MEMBER) {
delMembers = append(delMembers, prevVal)
}
}
@ -384,7 +420,7 @@ func (server *Server) handleModifyInternal(state *State, r *message.ModifyReques
for _, newVal := range values {
newEntry[attr] = append(newEntry[attr], string(newVal))
}
if strings.EqualFold(attr, "member") {
if strings.EqualFold(attr, ATTR_MEMBER) {
for _, newMem := range newEntry[attr] {
mustAdd := true
for _, prevMem := range prevEntry[attr] {
@ -430,27 +466,43 @@ func (server *Server) handleModifyInternal(state *State, r *message.ModifyReques
// Save the edited values
server.addElements(dn, newEntry)
// ~~ from this point on, our operation succeeded ~~
// ~~ future errors cause inconsistencies in the DB and are logged ~~
// 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
server.logger.Printf("Could not add %s to memberOf of %s: %s", dn, addMem, err)
continue
}
if memberOf == nil {
memberOf = []string{}
}
memberOf = append(memberOf, dn)
err = server.addElements(addMem, Entry{ATTR_MEMBEROF: memberOf})
if err != nil {
return ldap.LDAPResultOperationsError, err
alreadyMember := false
for _, mb := range memberOf {
if mb == dn {
alreadyMember = true
break
}
}
if !alreadyMember {
memberOf = append(memberOf, dn)
err = server.addElements(addMem, Entry{
ATTR_MEMBEROF: memberOf,
})
if err != nil {
server.logger.Printf("Could not add %s to memberOf of %s: %s", dn, addMem, err)
}
}
}
for _, delMem := range delMembers {
memberOf, err := server.getAttribute(delMem, ATTR_MEMBEROF)
if err != nil {
return ldap.LDAPResultOperationsError, err
server.logger.Printf("Could not remove %s from memberOf of %s: %s", dn, delMem, err)
continue
}
if memberOf == nil {
memberOf = []string{}
@ -464,7 +516,7 @@ func (server *Server) handleModifyInternal(state *State, r *message.ModifyReques
err = server.addElements(delMem, Entry{ATTR_MEMBEROF: newMemberOf})
if err != nil {
return ldap.LDAPResultOperationsError, err
server.logger.Printf("Could not remove %s from memberOf of %s: %s", dn, delMem, err)
}
}