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feat: support simple LDAP server (casdoor#1155)
* feat:Support simple ldap server * fix:fix review problems * fix:fix review problems
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@@ -19,3 +19,4 @@ origin = | |
| staticBaseUrl = "https://cdn.casbin.org" | ||
| isDemoMode = false | ||
| batchSize = 100 | ||
| ldapServerPort = 389 | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,131 @@ | ||
| // Copyright 2022 The Casdoor Authors. All Rights Reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package controllers | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "log" | ||
| "os" | ||
| "os/signal" | ||
| "syscall" | ||
|
|
||
| "github.com/casdoor/casdoor/conf" | ||
| "github.com/casdoor/casdoor/object" | ||
| "github.com/forestmgy/ldapserver" | ||
| "github.com/lor00x/goldap/message" | ||
| ) | ||
|
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||
| func StartLdapServer() { | ||
| server := ldapserver.NewServer() | ||
| routes := ldapserver.NewRouteMux() | ||
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| routes.Bind(handleBind) | ||
| routes.Search(handleSearch).Label(" SEARCH****") | ||
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| server.Handle(routes) | ||
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| go server.ListenAndServe("0.0.0.0:" + conf.GetConfigString("ldapServerPort")) | ||
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| // When CTRL+C, SIGINT and SIGTERM signal occurs | ||
| // Then stop server gracefully | ||
| ch := make(chan os.Signal) | ||
| signal.Notify(ch, syscall.SIGINT, syscall.SIGTERM) | ||
| <-ch | ||
| close(ch) | ||
|
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| server.Stop() | ||
| } | ||
|
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| func handleBind(w ldapserver.ResponseWriter, m *ldapserver.Message) { | ||
| r := m.GetBindRequest() | ||
| res := ldapserver.NewBindResponse(ldapserver.LDAPResultSuccess) | ||
|
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||
| if r.AuthenticationChoice() == "simple" { | ||
| bindusername, bindorg, err := object.GetNameAndOrgFromDN(string(r.Name())) | ||
| if err != "" { | ||
| log.Printf("Bind failed ,ErrMsg=%s", err) | ||
| res.SetResultCode(ldapserver.LDAPResultInvalidDNSyntax) | ||
| res.SetDiagnosticMessage("bind failed ErrMsg: " + err) | ||
| w.Write(res) | ||
| return | ||
| } | ||
| bindpassword := string(r.AuthenticationSimple()) | ||
| binduser, err := object.CheckUserPassword(bindorg, bindusername, bindpassword) | ||
| if err != "" { | ||
| log.Printf("Bind failed User=%s, Pass=%#v, ErrMsg=%s", string(r.Name()), r.Authentication(), err) | ||
| res.SetResultCode(ldapserver.LDAPResultInvalidCredentials) | ||
| res.SetDiagnosticMessage("invalid credentials ErrMsg: " + err) | ||
| w.Write(res) | ||
| return | ||
| } | ||
| if bindorg == "built-in" { | ||
| m.Client.IsGlobalAdmin, m.Client.IsOrgAdmin = true, true | ||
| } else if binduser.IsAdmin { | ||
| m.Client.IsOrgAdmin = true | ||
| } | ||
| m.Client.IsAuthenticated = true | ||
| m.Client.UserName = bindusername | ||
| m.Client.OrgName = bindorg | ||
| } else { | ||
| res.SetResultCode(ldapserver.LDAPResultAuthMethodNotSupported) | ||
| res.SetDiagnosticMessage("Authentication method not supported,Please use Simple Authentication") | ||
| } | ||
| w.Write(res) | ||
| } | ||
|
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||
| func handleSearch(w ldapserver.ResponseWriter, m *ldapserver.Message) { | ||
| res := ldapserver.NewSearchResultDoneResponse(ldapserver.LDAPResultSuccess) | ||
| if !m.Client.IsAuthenticated { | ||
| res.SetResultCode(ldapserver.LDAPResultUnwillingToPerform) | ||
| w.Write(res) | ||
| return | ||
| } | ||
| r := m.GetSearchRequest() | ||
| if r.FilterString() == "(objectClass=*)" { | ||
| w.Write(res) | ||
| return | ||
| } | ||
| name, org, errCode := object.GetUserNameAndOrgFromBaseDnAndFilter(string(r.BaseObject()), r.FilterString()) | ||
| if errCode != ldapserver.LDAPResultSuccess { | ||
| res.SetResultCode(errCode) | ||
| w.Write(res) | ||
| return | ||
| } | ||
| // Handle Stop Signal (server stop / client disconnected / Abandoned request....) | ||
| select { | ||
| case <-m.Done: | ||
| log.Print("Leaving handleSearch...") | ||
| return | ||
| default: | ||
| } | ||
| users, errCode := object.GetFilteredUsers(m, name, org) | ||
| if errCode != ldapserver.LDAPResultSuccess { | ||
| res.SetResultCode(errCode) | ||
| w.Write(res) | ||
| return | ||
| } | ||
| for i := 0; i < len(users); i++ { | ||
| user := users[i] | ||
| dn := fmt.Sprintf("cn=%s,%s", user.DisplayName, string(r.BaseObject())) | ||
| e := ldapserver.NewSearchResultEntry(dn) | ||
| e.AddAttribute("cn", message.AttributeValue(user.Name)) | ||
| e.AddAttribute("uid", message.AttributeValue(user.Name)) | ||
| e.AddAttribute("email", message.AttributeValue(user.Email)) | ||
| e.AddAttribute("mobile", message.AttributeValue(user.Phone)) | ||
| // e.AddAttribute("postalAddress", message.AttributeValue(user.Address[0])) | ||
| w.Write(e) | ||
| } | ||
| w.Write(res) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| // Copyright 2022 The Casdoor Authors. All Rights Reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package object | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "log" | ||
| "strings" | ||
|
|
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| "github.com/forestmgy/ldapserver" | ||
| ) | ||
|
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||
| func GetNameAndOrgFromDN(DN string) (string, string, string) { | ||
| DNValue := strings.Split(DN, ",") | ||
| if len(DNValue) == 1 || strings.ToLower(DNValue[0])[0] != 'c' || strings.ToLower(DNValue[1])[0] != 'o' { | ||
| return "", "", "please use correct Admin Name format like cn=xxx,ou=xxx,dc=example,dc=com" | ||
| } | ||
| return DNValue[0][3:], DNValue[1][3:], "" | ||
| } | ||
|
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| func GetUserNameAndOrgFromBaseDnAndFilter(baseDN, filter string) (string, string, int) { | ||
| if !strings.Contains(baseDN, "ou=") || !strings.Contains(filter, "cn=") { | ||
| return "", "", ldapserver.LDAPResultInvalidDNSyntax | ||
| } | ||
| name := getUserNameFromFilter(filter) | ||
| _, org, _ := GetNameAndOrgFromDN(fmt.Sprintf("cn=%s,", name) + baseDN) | ||
| errCode := ldapserver.LDAPResultSuccess | ||
| return name, org, errCode | ||
| } | ||
|
|
||
| func getUserNameFromFilter(filter string) string { | ||
| nameIndex := strings.Index(filter, "cn=") | ||
| var name string | ||
| for i := nameIndex + 3; filter[i] != ')'; i++ { | ||
| name = name + string(filter[i]) | ||
| } | ||
| return name | ||
| } | ||
|
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||
| func GetFilteredUsers(m *ldapserver.Message, name, org string) ([]*User, int) { | ||
| var filteredUsers []*User | ||
| if name == "*" && m.Client.IsOrgAdmin { // get all users from organization 'org' | ||
| if m.Client.OrgName == "built-in" && org == "*" { | ||
| filteredUsers = GetGlobalUsers() | ||
| return filteredUsers, ldapserver.LDAPResultSuccess | ||
| } else if m.Client.OrgName == "built-in" || org == m.Client.OrgName { | ||
| filteredUsers = GetUsers(org) | ||
| return filteredUsers, ldapserver.LDAPResultSuccess | ||
| } else { | ||
| return nil, ldapserver.LDAPResultInsufficientAccessRights | ||
| } | ||
| } else { | ||
| hasPermission, err := CheckUserPermission(fmt.Sprintf("%s/%s", m.Client.OrgName, m.Client.UserName), fmt.Sprintf("%s/%s", org, name), org, true) | ||
| if !hasPermission { | ||
| log.Printf("ErrMsg = %v", err.Error()) | ||
| return nil, ldapserver.LDAPResultInsufficientAccessRights | ||
| } | ||
| user := getUser(org, name) | ||
| filteredUsers = append(filteredUsers, user) | ||
| return filteredUsers, ldapserver.LDAPResultSuccess | ||
| } | ||
| } |