package main import ( "bytes" "crypto/rand" "encoding/binary" "encoding/hex" "fmt" "html/template" "log" "net/http" "regexp" "strings" // "github.com/emersion/go-sasl" // "github.com/emersion/go-smtp" "github.com/go-ldap/ldap/v3" "github.com/gorilla/mux" "golang.org/x/crypto/argon2" ) var EMAIL_REGEXP = regexp.MustCompile("^[a-zA-Z0-9.!#$%&'*+\\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$") func checkInviterLogin(w http.ResponseWriter, r *http.Request) *LoginStatus { login := checkLogin(w, r) if login == nil { return nil } // if !login.CanInvite { // http.Error(w, "Not authorized to invite new users.", http.StatusUnauthorized) // return nil // } return login } // New account creation directly from interface type PasswordFoundData struct { ErrorMessage string Success bool Username string Mail string OtherMailbox string CanAdmin bool LoggedIn bool } type PasswordLostData struct { ErrorMessage string Success bool Username string Mail string OtherMailbox string CanAdmin bool LoggedIn bool } func openNewUserLdap(config *ConfigFile) (*ldap.Conn, error) { l, err := openLdap(config) if err != nil { log.Printf(fmt.Sprintf("openNewUserLdap 1 : %v %v", err, l)) log.Printf(fmt.Sprintf("openNewUserLdap 1 : %v", config)) // data.ErrorMessage = err.Error() } err = l.Bind(config.NewUserDN, config.NewUserPassword) if err != nil { log.Printf(fmt.Sprintf("openNewUserLdap 2 : %v", err)) log.Printf(fmt.Sprintf("openNewUserLdap 2 : %v", config.NewUserDN)) log.Printf(fmt.Sprintf("openNewUserLdap 2 : %v", config.NewUserPassword)) log.Printf(fmt.Sprintf("openNewUserLdap 2 : %v", config)) // data.ErrorMessage = err.Error() } return l, err } func handleLostPassword(w http.ResponseWriter, r *http.Request) { templateLostPasswordPage := getTemplate("password_lost.html") data := PasswordLostData{ CanAdmin: false, LoggedIn: false, } if r.Method == "POST" { r.ParseForm() data.Username = strings.TrimSpace(strings.Join(r.Form["username"], "")) data.Mail = strings.TrimSpace(strings.Join(r.Form["mail"], "")) data.OtherMailbox = strings.TrimSpace(strings.Join(r.Form["othermailbox"], "")) user := User{ CN: strings.TrimSpace(strings.Join(r.Form["username"], "")), UID: strings.TrimSpace(strings.Join(r.Form["username"], "")), Mail: strings.TrimSpace(strings.Join(r.Form["mail"], "")), OtherMailbox: strings.TrimSpace(strings.Join(r.Form["othermailbox"], "")), } ldapConn, err := openNewUserLdap(config) if err != nil { log.Printf(fmt.Sprintf("handleLostPassword 99 : %v %v", err, ldapConn)) data.ErrorMessage = err.Error() } err = passwordLost(user, config, ldapConn) if err != nil { log.Printf(fmt.Sprintf("handleLostPassword 104 : %v %v", err, ldapConn)) data.ErrorMessage = err.Error() } else { err = ldapConn.Bind(config.NewUserDN, config.NewUserPassword) if err != nil { log.Printf(fmt.Sprintf("handleLostPassword 109 : %v %v", err, ldapConn)) data.ErrorMessage = err.Error() } else { data.Success = true } } } data.CanAdmin = false templateLostPasswordPage.Execute(w, data) } func handleInviteNewAccount(w http.ResponseWriter, r *http.Request) { l, err := ldapOpen(w) if err != nil { log.Printf(fmt.Sprintf("58: %v %v", err, l)) } // l.Bind(config.NewUserDN, config.NewUserPassword) // login := checkInviterLogin(w, r) // if login == nil { // return // } // l, _ := ldap.DialURL(config.LdapServerAddr) // l.Bind(config.NewUserDN, config.NewUserPassword) // loginInfo, err := doLogin(w, r, "testuser", config.NewUserDN, config.NewUserPassword) // if err != nil { // log.Printf(fmt.Sprintf("58: %v %v", err, l)) // } // l := ldapOpen(w) if l == nil { return } err = l.Bind(config.NewUserDN, config.NewUserPassword) if err != nil { log.Printf(fmt.Sprintf("58: %v %v", err, l)) } handleNewAccount(w, r, l, config.NewUserDN) } // New account creation using code func handleInvitationCode(w http.ResponseWriter, r *http.Request) { code := mux.Vars(r)["code"] code_id, code_pw := readCode(code) // log.Printf(code_pw) login := checkLogin(w, r) // l := ldapOpen(w) // if l == nil { // return // } inviteDn := config.InvitationNameAttr + "=" + code_id + "," + config.InvitationBaseDN err := login.conn.Bind(inviteDn, code_pw) if err != nil { templateInviteInvalidCode := getTemplate("invite_invalid_code.html") templateInviteInvalidCode.Execute(w, nil) return } sReq := ldap.NewSearchRequest( inviteDn, ldap.ScopeBaseObject, ldap.NeverDerefAliases, 0, 0, false, fmt.Sprintf("(objectclass=*)"), []string{"dn", "creatorsname"}, nil) sr, err := login.conn.Search(sReq) if err != nil { http.Error(w, err.Error(), http.StatusInternalServerError) return } if len(sr.Entries) != 1 { http.Error(w, fmt.Sprintf("Expected 1 entry, got %d", len(sr.Entries)), http.StatusInternalServerError) return } invitedBy := sr.Entries[0].GetAttributeValue("creatorsname") if handleNewAccount(w, r, login.conn, invitedBy) { del_req := ldap.NewDelRequest(inviteDn, nil) err = login.conn.Del(del_req) if err != nil { log.Printf("Could not delete invitation %s: %s", inviteDn, err) } } } // Common functions for new account type NewAccountData struct { Username string DisplayName string GivenName string Surname string Mail string SuggestPW string OtherEmail string ErrorUsernameTaken bool ErrorInvalidUsername bool ErrorPasswordTooShort bool ErrorPasswordMismatch bool ErrorMessage string WarningMessage string Success bool CanAdmin bool } func handleNewAccount(w http.ResponseWriter, r *http.Request, l *ldap.Conn, invitedBy string) bool { templateInviteNewAccount := getTemplate("invite_new_account.html") data := &NewAccountData{} if r.Method == "POST" { r.ParseForm() newUser := User{} // login := checkLogin(w, r) // newUser.Mail = fmt.Sprintf("%s@%s", strings.TrimSpace(strings.Join(r.Form["username"], "")), "lesgv.com") newUser.DisplayName = strings.TrimSpace(strings.Join(r.Form["displayname"], "")) newUser.GivenName = strings.TrimSpace(strings.Join(r.Form["givenname"], "")) newUser.SN = strings.TrimSpace(strings.Join(r.Form["surname"], "")) newUser.Mail = strings.TrimSpace(strings.Join(r.Form["mail"], "")) newUser.UID = strings.TrimSpace(strings.Join(r.Form["otheremail"], "")) newUser.CN = strings.TrimSpace(strings.Join(r.Form["username"], "")) newUser.DN = "cn=" + strings.TrimSpace(strings.Join(r.Form["username"], "")) + "," + config.InvitationBaseDN password1 := strings.Join(r.Form["password"], "") password2 := strings.Join(r.Form["password2"], "") if password1 != password2 { data.Success = false data.ErrorPasswordMismatch = true } else { newUser.Password = password2 l.Bind(config.NewUserDN, config.NewUserPassword) err := add(newUser, config, l) if err != nil { data.Success = false data.ErrorMessage = err.Error() } http.Redirect(w, r, "/admin/activate", http.StatusFound) } // tryCreateAccount(l, data, password1, password2, invitedBy) } else { data.SuggestPW = fmt.Sprintf("%s", suggestPassword()) } data.CanAdmin = false templateInviteNewAccount.Execute(w, data) return data.Success } func tryCreateAccount(l *ldap.Conn, data *NewAccountData, pass1 string, pass2 string, invitedBy string) { checkFailed := false // Check if username is correct if match, err := regexp.MatchString("^[a-z0-9._-]+$", data.Username); !(err == nil && match) { data.ErrorInvalidUsername = true checkFailed = true } // Check if user exists userDn := config.UserNameAttr + "=" + data.Username + "," + config.UserBaseDN searchRq := ldap.NewSearchRequest( userDn, ldap.ScopeBaseObject, ldap.NeverDerefAliases, 0, 0, false, "(objectclass=*)", []string{"dn"}, nil) sr, err := l.Search(searchRq) if err != nil { data.ErrorMessage = err.Error() checkFailed = true } if len(sr.Entries) > 0 { data.ErrorUsernameTaken = true checkFailed = true } // Check that password is long enough if len(pass1) < 8 { data.ErrorPasswordTooShort = true checkFailed = true } if pass1 != pass2 { data.ErrorPasswordMismatch = true checkFailed = true } if checkFailed { return } // Actually create user req := ldap.NewAddRequest(userDn, nil) req.Attribute("objectclass", []string{"inetOrgPerson", "organizationalPerson", "person", "top"}) req.Attribute("structuralobjectclass", []string{"inetOrgPerson"}) pw, err := SSHAEncode(pass1) if err != nil { data.ErrorMessage = err.Error() return } req.Attribute("userpassword", []string{pw}) req.Attribute("invitedby", []string{invitedBy}) if len(data.DisplayName) > 0 { req.Attribute("displayname", []string{data.DisplayName}) } if len(data.GivenName) > 0 { req.Attribute("givenname", []string{data.GivenName}) } if len(data.Surname) > 0 { req.Attribute("sn", []string{data.Surname}) } if len(config.InvitedMailFormat) > 0 { email := strings.ReplaceAll(config.InvitedMailFormat, "{}", data.Username) req.Attribute("mail", []string{email}) } err = l.Add(req) if err != nil { data.ErrorMessage = err.Error() return } for _, group := range config.InvitedAutoGroups { req := ldap.NewModifyRequest(group, nil) req.Add("member", []string{userDn}) err = l.Modify(req) if err != nil { data.WarningMessage += fmt.Sprintf("Cannot add to %s: %s\n", group, err.Error()) } } data.Success = true } // ---- Code generation ---- type SendCodeData struct { ErrorMessage string ErrorInvalidEmail bool Success bool CodeDisplay string CodeSentTo string WebBaseAddress string CanAdmin bool } type CodeMailFields struct { From string To string Code string InviteFrom string WebBaseAddress string CanAdmin bool } func handleInviteSendCode(w http.ResponseWriter, r *http.Request) { templateInviteSendCode := getTemplate("invite_send_code.html") login := checkInviterLogin(w, r) if login == nil { return } // carLicense if r.Method == "POST" { r.ParseForm() data := &SendCodeData{ WebBaseAddress: config.WebAddress, } // modify_request := ldap.NewModifyRequest(login.UserEntry.DN, nil) // // choice := strings.Join(r.Form["choice"], "") // // sendto := strings.Join(r.Form["sendto"], "") code, code_id, code_pw := genCode() log.Printf(fmt.Sprintf("272: %v %v %v", code, code_id, code_pw)) // // Create invitation object in database // modify_request.Add("carLicense", []string{fmt.Sprintf("%s,%s,%s",code, code_id, code_pw)}) // err := login.conn.Modify(modify_request) // if err != nil { // data.ErrorMessage = err.Error() // // return // } else { // data.Success = true // data.CodeDisplay = code // } log.Printf(fmt.Sprintf("279: %v %v %v", code, code_id, code_pw)) addReq := ldap.NewAddRequest("documentIdentifier="+code_id+","+config.InvitationBaseDN, nil) addReq.Attribute("objectClass", []string{"top", "document", "simpleSecurityObject"}) addReq.Attribute("cn", []string{code}) addReq.Attribute("userPassword", []string{code_pw}) addReq.Attribute("documentIdentifier", []string{code_id}) log.Printf(fmt.Sprintf("285: %v %v %v", code, code_id, code_pw)) log.Printf(fmt.Sprintf("286: %v", addReq)) err := login.conn.Add(addReq) if err != nil { data.ErrorMessage = err.Error() // return } else { data.Success = true data.CodeDisplay = code } data.CanAdmin = login.CanAdmin templateInviteSendCode.Execute(w, data) // if choice == "display" || choice == "send" { // log.Printf(fmt.Sprintf("260: %v %v %v %v", login, choice, sendto, data)) // trySendCode(login, choice, sendto, data) // } } } func trySendCode(login *LoginStatus, choice string, sendto string, data *SendCodeData) { log.Printf(fmt.Sprintf("269: %v %v %v %v", login, choice, sendto, data)) // Generate code code, code_id, code_pw := genCode() log.Printf(fmt.Sprintf("272: %v %v %v", code, code_id, code_pw)) // Create invitation object in database // len_base_dn := len(strings.Split(config.BaseDN, ",")) // dn_split := strings.Split(super_dn, ",") // for i := len_base_dn + 1; i <= len(dn_split); i++ { // path = append(path, PathItem{ // DN: strings.Join(dn_split[len(dn_split)-i:len(dn_split)], ","), // Identifier: dn_split[len(dn_split)-i], // }) // } // data := &SendCodeData{ // WebBaseAddress: config.WebAddress, // } // // Handle data // data := &CreateData{ // SuperDN: super_dn, // Path: path, // } // data.IdType = config.UserNameAttr // data.StructuralObjectClass = "inetOrgPerson" // data.ObjectClass = "inetOrgPerson\norganizationalPerson\nperson\ntop" // data.IdValue = strings.TrimSpace(strings.Join(r.Form["idvalue"], "")) // data.DisplayName = strings.TrimSpace(strings.Join(r.Form["displayname"], "")) // data.GivenName = strings.TrimSpace(strings.Join(r.Form["givenname"], "")) // data.Mail = strings.TrimSpace(strings.Join(r.Form["mail"], "")) // data.Member = strings.TrimSpace(strings.Join(r.Form["member"], "")) // data.Description = strings.TrimSpace(strings.Join(r.Form["description"], "")) // data.SN = strings.TrimSpace(strings.Join(r.Form["sn"], "")) // object_class := []string{} // for _, oc := range strings.Split(data.ObjectClass, "\n") { // x := strings.TrimSpace(oc) // if x != "" { // object_class = append(object_class, x) // } // } // dn := data.IdType + "=" + data.IdValue + "," + super_dn // req := ldap.NewAddRequest(dn, nil) // req.Attribute("objectclass", object_class) // // req.Attribute("mail", []string{data.IdValue}) // /* // if data.StructuralObjectClass != "" { // req.Attribute("structuralobjectclass", []string{data.StructuralObjectClass}) // } // */ // if data.DisplayName != "" { // req.Attribute("displayname", []string{data.DisplayName}) // } // if data.GivenName != "" { // req.Attribute("givenname", []string{data.GivenName}) // } // if data.Mail != "" { // req.Attribute("mail", []string{data.Mail}) // } // if data.Member != "" { // req.Attribute("member", []string{data.Member}) // } // if data.SN != "" { // req.Attribute("sn", []string{data.SN}) // } // if data.Description != "" { // req.Attribute("description", []string{data.Description}) // } // err := login.conn.Add(req) // // log.Printf(fmt.Sprintf("899: %v",err)) // // log.Printf(fmt.Sprintf("899: %v",req)) // // log.Printf(fmt.Sprintf("899: %v",data)) // if err != nil { // data.Error = err.Error() // } else { // if template == "ml" { // http.Redirect(w, r, "/admin/mailing/"+data.IdValue, http.StatusFound) // } else { // http.Redirect(w, r, "/admin/ldap/"+dn, http.StatusFound) // } // } // inviteDn := config.InvitationNameAttr + "=" + code_id + "," + config.InvitationBaseDN // req := ldap.NewAddRequest(inviteDn, nil) // pw, err := SSHAEncode(code_pw) // if err != nil { // data.ErrorMessage = err.Error() // return // } // req.Attribute("employeeNumber", []string{pw}) // req.Attribute("objectclass", []string{"top", "invitationCode"}) // err = login.conn.Add(req) // if err != nil { // log.Printf(fmt.Sprintf("286: %v", req)) // data.ErrorMessage = err.Error() // return // } // If we want to display it, do so if choice == "display" { data.Success = true data.CodeDisplay = code return } // Otherwise, we are sending a mail if !EMAIL_REGEXP.MatchString(sendto) { data.ErrorInvalidEmail = true return } templateMail := template.Must(template.ParseFiles(templatePath + "/invite_mail.txt")) buf := bytes.NewBuffer([]byte{}) templateMail.Execute(buf, &CodeMailFields{ To: sendto, From: config.MailFrom, InviteFrom: login.WelcomeName(), Code: code, WebBaseAddress: config.WebAddress, }) log.Printf("Sending mail to: %s", sendto) // var auth sasl.Client = nil // if config.SMTPUsername != "" { // auth = sasl.NewPlainClient("", config.SMTPUsername, config.SMTPPassword) // } // err = smtp.SendMail(config.SMTPServer, auth, config.MailFrom, []string{sendto}, buf) // if err != nil { // data.ErrorMessage = err.Error() // return // } // log.Printf("Mail sent.") data.Success = true data.CodeSentTo = sendto } func genCode() (code string, code_id string, code_pw string) { random := make([]byte, 32) n, err := rand.Read(random) if err != nil || n != 32 { log.Fatalf("Could not generate random bytes: %s", err) } a := binary.BigEndian.Uint32(random[0:4]) b := binary.BigEndian.Uint32(random[4:8]) c := binary.BigEndian.Uint32(random[8:12]) code = fmt.Sprintf("%03d-%03d-%03d", a%1000, b%1000, c%1000) code_id, code_pw = readCode(code) log.Printf(fmt.Sprintf("342: %v %v %v", code, code_id, code_pw)) return code, code_id, code_pw } func readCode(code string) (code_id string, code_pw string) { // Strip everything that is not a digit code_digits := "" for _, c := range code { if c >= '0' && c <= '9' { code_digits = code_digits + string(c) } } id_hash := argon2.IDKey([]byte(code_digits), []byte("Guichet ID"), 2, 64*1024, 4, 32) pw_hash := argon2.IDKey([]byte(code_digits), []byte("Guichet PW"), 2, 64*1024, 4, 32) code_id = hex.EncodeToString(id_hash[:8]) code_pw = hex.EncodeToString(pw_hash[:16]) return code_id, code_pw }