add uid to peer + helper methods + http

client/helpers/backgroundHelper.go

@@ -0,0 +1,226 @@
+package helpers
+
+import (
+	"C"
+
+	"forge.redroom.link/yves/meowlib"
+	"forge.redroom.link/yves/meowlib/client"
+)
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strconv"
+	"time"
+
+	"github.com/google/uuid"
+	"google.golang.org/protobuf/proto"
+)
+
+type ReceivedMessage struct {
+	Text          string
+	files         []string
+	Server        string
+	Sent          uint64
+	Received      uint64
+	LocalUuid     string
+	LocalSequence uint64
+	AppData       string
+	Location      meowlib.Location
+}
+
+// CheckForMessages
+func CheckForMessages(message *C.char) (int, string, error) {
+	var jsonjob map[string]interface{}
+	count := 0
+	err := json.Unmarshal([]byte(C.GoString(message)), &jsonjob)
+	if err != nil {
+		return -1, "CheckMessages: json.Unmarshal", err
+	}
+	//fmt.Println(jsonjob)
+	// if folder does not exist, create it
+	if _, err := os.Stat(filepath.Join(jsonjob["storage_path"].(string), "inbox")); os.IsNotExist(err) {
+		err := os.MkdirAll(filepath.Join(jsonjob["storage_path"].(string), "inbox"), 0700)
+		if err != nil {
+			return -1, "CheckMessages: MkdirAll", err
+		}
+	}
+	//convert server to a server object
+	var server client.Server
+	jsonServer, err := json.Marshal(jsonjob["server"])
+	if err != nil {
+		return -1, "CheckMessages: json.Marshal server", err
+	}
+	err = json.Unmarshal(jsonServer, &server)
+	if err != nil {
+		return -1, "CheckMessages: json.Unmarshal server", err
+	}
+	var crl []*meowlib.ConversationRequest
+	// build conversation requests
+	if jsonjob["lookup_keys"] != nil {
+		for _, key := range jsonjob["lookup_keys"].([]interface{}) {
+			keymap := key.(map[string]interface{})
+			var cr meowlib.ConversationRequest
+			cr.LookupKey = keymap["public"].(string)
+			cr.SendTimestamp = time.Now().UTC().Unix()
+			// todo sign it
+			//cr.LookupSignature =
+			crl = append(crl, &cr)
+		}
+		// build server message
+
+		var toSrv meowlib.ToServerMessage
+		toSrv.PullRequest = crl
+		toSrv.From = server.UserKp.Public
+		data, err := server.ProcessOutboundMessage(&toSrv)
+		if err != nil {
+			return -1, "CheckMessages: ProcessOutboundMessage", err
+		}
+
+		response, err := meowlib.HttpPostMessage(server.Url, data)
+		if err != nil {
+			return -1, "CheckMessages: httpPostMessage", err
+		}
+		fs_msg, err := server.ProcessInboundServerResponse(response)
+		if err != nil {
+			return -1, "CheckMessages: ProcessInboundServerResponse", err
+		}
+		if len(fs_msg.Chat) == 0 {
+			// todo: manage non usermessage, like serverlists
+		} else {
+			// for _, msg := range fs_msg.Chat {
+			// 	// Store messages
+			// 	out, err := proto.Marshal(msg)
+			// 	if err != nil {
+			// 		C.CString(errorToJson(err, "CheckMessages: protobuf marshal"))
+			// 	}
+			// 	if err := os.WriteFile(filepath.Join(jsonjob["storage_path"].(string), "inbox", strconv.FormatInt(time.Now().UTC().UnixNano(), 10)), out, 0644); err != nil {
+			// 		C.CString(errorToJson(err, "CheckMessages: WriteFile"))
+			// 	}
+			// }
+			out, err := proto.Marshal(fs_msg)
+			if err != nil {
+				return -1, "CheckMessages: protobuf marshal", err
+			}
+			if err := os.WriteFile(filepath.Join(jsonjob["storage_path"].(string), "inbox", strconv.FormatInt(time.Now().UTC().UnixNano(), 10)), out, 0644); err != nil {
+				return -1, "CheckMessages: WriteFile", err
+			}
+		}
+		count = len(fs_msg.Chat)
+	}
+
+	return count, "", nil
+}
+
+// SaveCheckJobs
+func SaveCheckJobs() (string, error) {
+	me := client.GetConfig().GetIdentity()
+	err := me.SaveBackgroundJob()
+	if err != nil {
+
+		return "CheckMessages: json.Marshal", err
+	}
+	return "", nil
+}
+
+// ReadMessage
+func ReadMessage(messageFilename string, storagePath string) (string, string, error) {
+	result := map[string]interface{}{}
+
+	// read message file
+	msg, err := os.ReadFile(messageFilename)
+	if err != nil {
+		return "", "REadMessage: ReadFile", err
+	}
+	// protobuf unmarshal message
+	var fromServerMessage meowlib.FromServerMessage
+	err = proto.Unmarshal(msg, &fromServerMessage)
+	if err != nil {
+		return "", "ReadMessage: Unmarshal FromServerMessage", err
+	}
+	// Chat messages
+	if len(fromServerMessage.Chat) > 0 {
+		for _, packedUserMessage := range fromServerMessage.Chat {
+
+			// find the peer with that lookup key
+			peer := client.GetConfig().GetIdentity().Peers.GetFromMyLookupKey(packedUserMessage.Destination)
+			if peer == nil {
+				return "", "ReadMessage: GetFromMyLookupKey", errors.New("no visible peer for that message")
+			}
+			// Unpack the message
+			usermsg, err := peer.ProcessInboundUserMessage(packedUserMessage.Payload, packedUserMessage.Signature)
+			if err != nil {
+				return "", "ReadMessage: ProcessInboundUserMessage", err
+			}
+			fmt.Println("From:", usermsg.From)
+			jsonUserMessage, _ := json.Marshal(usermsg)
+			fmt.Println(string(jsonUserMessage))
+			// detach files
+			filenames := []string{}
+			if usermsg.Files != nil {
+				for _, file := range usermsg.Files {
+					filename := uuid.New().String() + "_" + file.Filename
+					filenames = append(filenames, filename)
+					// detach file
+					os.WriteFile(filepath.Join(storagePath, "files", filename), file.Data, 0600)
+				}
+				//? result["invitation finalized"] = peer.Name
+			}
+			// user message
+			result["message"] = string(usermsg.Data)
+			// add message to storage
+			err = peer.StoreMessage(usermsg, filenames)
+			if err != nil {
+				return "", "ReadMessage: StoreMessage", err
+			}
+
+		}
+	}
+
+	// fmt.Println("have read fromServerMessage, will unmarshal packed")
+	// // protobuf unmarshal message //! WRONG !!!!
+	// var packedMessage meowlib.PackedUserMessage
+	// err = proto.Unmarshal(userMessage, &packedMessage)
+	// if err != nil {
+	// 	return C.CString(errorToJson(err, "ReadMessage: Unmarshal PackedUserMessage"))
+	// }
+	// fmt.Println("Destination:", packedMessage.Destination)
+	// fmt.Println("Payload lengh:", len(packedMessage.Payload))
+	// server invitation finalize or more ?
+	if fromServerMessage.Invitation != nil {
+		fmt.Println("Invitation from:", fromServerMessage.Invitation.From)
+		// find the peer with that lookup key
+		// todo  get from invitation id
+		//! FOLOWING statement is WRONG !
+		peer := client.GetConfig().GetIdentity().Peers.GetFromPublicKey(fromServerMessage.Invitation.From)
+		if peer == nil {
+			return "", "ReadMessage: GetFromPublicKey", errors.New("no visible peer for that message")
+		}
+		peer.ContactPublicKey = fromServerMessage.Invitation.From
+		str, _ := json.Marshal(peer)
+		fmt.Println("Peer:", string(str))
+		// invitation message
+		var receivedContactCard meowlib.ContactCard
+		err := proto.Unmarshal(fromServerMessage.Invitation.Payload, &receivedContactCard)
+		if err != nil {
+			return "", "ReadMessage: Unmarshal ContactCard", err
+		}
+		err = client.GetConfig().GetIdentity().FinalizeInvitation(&receivedContactCard)
+		if err != nil {
+			return "", "ReadMessage: FinalizeInvitation", err
+		}
+		result["invitation finalized"] = peer.Name
+
+	}
+
+	// message
+	// including list of detached files
+	val, err := json.Marshal(result)
+	if err != nil {
+		return "", "ReadMessage: json.Marshal", err
+	}
+	os.Remove(messageFilename)
+	return string(val), "", nil
+}

client/helpers/contactHelper.go

@@ -0,0 +1 @@
+package helpers

client/helpers/invitationAnswerHelper.go

@@ -0,0 +1,147 @@
+package helpers
+
+import (
+	"C"
+	"fmt"
+	"os"
+	"strings"
+
+	"forge.redroom.link/yves/meowlib"
+	"forge.redroom.link/yves/meowlib/client"
+)
+import (
+	"errors"
+
+	"google.golang.org/protobuf/proto"
+)
+
+// InvitationAnswer
+func InvitationAnswer(cc *meowlib.ContactCard, nickname string, myNickname string, serverUids []string) (*client.Peer, string, error) {
+
+	mynick := myNickname
+	// my nickname for that contact
+
+	if myNickname == "" {
+		mynick = client.GetConfig().GetIdentity().Nickname
+	}
+
+	// build my contact card for that friend
+	peer := client.GetConfig().GetIdentity().AnswerInvitation(mynick, nickname, serverUids, cc)
+
+	//peerstr, err := json.Marshal(peer)
+	//fmt.Println("InvitationAnswer: " + string(peerstr))
+	c := client.GetConfig()
+	c.GetIdentity().Save()
+
+	return peer, "", nil
+}
+
+// InvitationAnswerFile
+func InvitationAnswerFile(invitationFile string, nickname string, myNickname string, serverUids []string) (string, error) {
+	format := "qr"
+	var filename string = ""
+	var cc *meowlib.ContactCard
+	c := client.GetConfig()
+	if _, err := os.Stat(invitationFile); os.IsNotExist(err) {
+		return "InvitationAnswerFile : os.Stat", err
+	}
+	if strings.HasSuffix(invitationFile, ".mwiv") {
+		format = "mwiv"
+		data, err := os.ReadFile(invitationFile)
+		if err != nil {
+			return "InvitationAnswerFile : os.ReadFile", err
+		}
+		cc, err = meowlib.NewContactCardFromCompressed(data)
+		if err != nil {
+			return "InvitationAnswerFile : NewContactCardFromCompressed", err
+		}
+	}
+	identity := client.GetConfig().GetIdentity()
+	if cc != nil {
+		isAnswer, proposed, received, _ := identity.CheckInvitation(cc)
+		if isAnswer {
+			fmt.Fprintln(os.Stdout, "This is already a response "+proposed+" to your invitation.")
+			fmt.Fprintln(os.Stdout, "You cannot answer again.")
+			fmt.Fprintln(os.Stdout, "You should finalize it by importing "+proposed+" contact card to your meow.")
+			fmt.Fprintln(os.Stdout, "Use : 'meow invitation finalize "+invitationFile+"' to do it.")
+
+		} else {
+			mynick := myNickname
+			// my nickname for that contact
+
+			if myNickname == "" {
+				mynick = client.GetConfig().GetIdentity().Nickname
+			}
+
+			response := identity.AnswerInvitation(mynick, nickname, serverUids, cc)
+			fmt.Fprintln(os.Stdout, "Invitation sent by "+received)
+			if format == "qr" {
+				filename = c.StoragePath + string(os.PathSeparator) + mynick + "-" + nickname + ".png"
+				response.GetMyContact().WriteQr(filename)
+			} else {
+				filename = c.StoragePath + string(os.PathSeparator) + mynick + "-" + nickname + ".mwiv"
+				response.GetMyContact().WriteCompressed(filename)
+			}
+			client.GetConfig().GetIdentity().Save()
+		}
+
+	}
+	return "", nil
+}
+
+// InvitationAnswerMessage
+func InvitationAnswerMessage(invitationId string, invitationServerUid string) ([]byte, string, error) {
+
+	// find the peer with that invitation id
+	var peer *client.Peer
+	for i := len(client.GetConfig().GetIdentity().Peers) - 1; i >= 0; i-- { //! to allow self invitation : testing only, findinc the received peer before myself
+		// for i := 0; i < len(client.GetConfig().GetIdentity().Peers); i++ {
+		if client.GetConfig().GetIdentity().Peers[i].InvitationId == invitationId {
+			peer = client.GetConfig().GetIdentity().Peers[i]
+			break
+		}
+	}
+	if peer == nil {
+		// declare a custom go error for no peer found
+		return nil, "InvitationAnswerMessage: loop for peer", errors.New("no peer with that invitation id")
+	}
+	answermsg, err := peer.BuildInvitationAnswerMessage(peer.GetMyContact())
+	if err != nil {
+		return nil, "InvitationAnswerMessage: BuildInvitationAnswserMessage", err
+	}
+	// Server: get the invitation server
+	invitationServer, err := client.GetConfig().GetIdentity().MessageServers.LoadServer(invitationServerUid)
+	if err != nil {
+		return nil, "InvitationAnswerMessage: LoadServer", err
+	}
+
+	// jsonsrv, err := json.Marshal(peer)
+	// if err != nil {
+	// 	return gobin2c(berrorToJson(err, "InvitationAnswerMessage: Marshal"))
+	// }
+	//fmt.Println(string(jsonsrv))
+	// Prepare cyphered + packed user message
+	packedMsg, err := peer.ProcessOutboundUserMessage(answermsg)
+	if err != nil {
+		return nil, "InvitationAnswerMessage: ProcessOutboundUserMessage", err
+	}
+	// jsonsrv, err = json.Marshal(invitationServer)
+	// if err != nil {
+	// 	return gobin2c(berrorToJson(err, "InvitationAnswerMessage: Marshal"))
+	// }
+	//fmt.Println(string(jsonsrv))
+	// Creating Server message for transporting the user message
+	toServerMessage := invitationServer.BuildToServerMessageFromUserMessage(packedMsg)
+	toServerMessage.Invitation = &meowlib.Invitation{Step: 3}
+	toServerMessage.Invitation.From = peer.MyIdentity.Public
+	pld, err := proto.Marshal(packedMsg)
+	if err != nil {
+		return nil, "InvitationAnswerMessage: proto.Marshal", err
+	}
+	toServerMessage.Invitation.Payload = pld
+	bytemsg, err := invitationServer.ProcessOutboundMessage(toServerMessage)
+	if err != nil {
+		return nil, "InvitationAnswerMessage: ProcessOutboundMessage", err
+	}
+	return bytemsg, "", nil
+}

client/helpers/invitationCheckHelper.go

@@ -0,0 +1,125 @@
+package helpers
+
+import (
+	"strings"
+
+	"forge.redroom.link/yves/meowlib"
+	"forge.redroom.link/yves/meowlib/client"
+)
+
+// InvitationCheck
+// todo
+/*
+func InvitationCheck(invitationdata []byte) *C.char {
+	var jsoninv map[string]interface{}
+	err := json.Unmarshal([]byte(C.GoString(invitationdata)), &jsoninv)
+	if err != nil {
+		return C.CString(errorToJson(err, "InvitationCheck: "))
+	}
+	var cc *meowlib.ContactCard
+	if _, err := os.Stat(jsoninv["filename"].(string)); os.IsNotExist(err) {
+		return C.CString(errorToJson(err, "InvitationCheck: "))
+	}
+	if strings.HasSuffix(jsoninv["filename"].(string), ".mwiv") {
+		data, err := os.ReadFile(jsoninv["filename"].(string))
+		if err != nil {
+			return C.CString(errorToJson(err, "InvitationCheck: "))
+		}
+		cc, err = meowlib.NewContactCardFromCompressed(data)
+		if err != nil {
+			return C.CString(errorToJson(err, "InvitationCheck: "))
+		}
+	}
+	identity := client.GetConfig().GetIdentity()
+	result := map[string]string{}
+	if cc != nil {
+		isAnswer, proposed, received, invitationMessage := identity.CheckInvitation(cc)
+		if isAnswer { // answer to infitation
+			result["type"] = "answer"
+			result["to"] = proposed
+			result["from"] = received
+			result["invitation_message"] = invitationMessage
+			//fmt.Fprintln(os.Stdout, "Invitation sent to "+proposed+" received with  "+received+" as suggested nickname")
+		} else { // finalization message
+			result["type"] = "finalize"
+			result["from"] = received
+			//fmt.Fprintln(os.Stdout, "Invitation sent by "+received)
+		}
+
+	}
+	val, err := json.Marshal(result)
+	if err != nil {
+		return C.CString(errorToJson(err, "InvitationCheck: "))
+	}
+	return C.CString(string(val))
+}*/
+
+// InvitationGetMessage
+// Called by the invitation receiver
+// invitationUrl: the url of server holding the invitation
+// serverPublicKey: the public key of the server holding the invitation
+// invitationPassword: the password of the invitation
+func InvitationGetMessage(invitationUrl string, serverPublicKey string, invitationPassword string) ([]byte, string, error) {
+
+	meowurl := strings.Split(invitationUrl[7:], "?")
+
+	serverurl := meowurl[0]
+	shortcode := meowurl[1]
+	srv := client.Server{}
+	// check if already in msg servers
+	dbsrv, err := client.GetConfig().GetIdentity().MessageServers.LoadServer(serverurl)
+	if err != nil {
+		return nil, "InvitationGetMessage: LoadServer", err
+	}
+	if dbsrv == nil {
+		// create a server object with url & pubkey
+		srv.Url = serverurl
+		srv.PublicKey = serverPublicKey
+		srv.UserKp = meowlib.NewKeyPair()
+		// save it
+		err = client.GetConfig().GetIdentity().MessageServers.StoreServer(&srv)
+		if err != nil {
+			return nil, "InvitationGetMessage: StoreServer", err
+		}
+	} else {
+		srv = *dbsrv
+	}
+	// buildserver message
+	toSrvMsg, err := srv.BuildToServerMessageInvitationRequest(shortcode, invitationPassword)
+	if err != nil {
+		return nil, "InvitationGetMessage: BuildToServerMessageInvitationRequest", err
+	}
+	// processoutbound
+	bytemsg, err := srv.ProcessOutboundMessage(toSrvMsg)
+	if err != nil {
+		return nil, "InvitationGetMessage: ProcessOutboundMessage", err
+	}
+
+	return bytemsg, "", nil
+}
+
+// InvitationGetMessageReadResponse
+// Called by the invitation receiver
+// invitationData: the data received from the server
+// invitationServerUid: the uid of the server holding the invitation
+func InvitationGetMessageReadResponse(invitationData []byte, invitationServerUid string) (*meowlib.ContactCard, string, error) {
+
+	server, err := client.GetConfig().GetIdentity().MessageServers.LoadServer(invitationServerUid)
+	if err != nil {
+		return nil, "InvitationGetMessageReadResponse: LoadServer", err
+	}
+	// Server inbound processing : get the invitation server
+	serverMsg, err := server.ProcessInboundServerResponse(invitationData)
+	if err != nil {
+		return nil, "InvitationGetMessageReadResponse: ProcessInboundServerResponse", err
+	}
+	// fmt.Println("Inbound OK, Invitation Step: ", serverMsg.Invitation.Step, len(serverMsg.Invitation.Payload))
+	// fmt.Println("Invitation Check")
+	// fmt.Println(hex.EncodeToString(serverMsg.Invitation.Payload))
+	// contactCard decode
+	cc, err := meowlib.NewContactCardFromCompressed(serverMsg.Invitation.Payload)
+	if err != nil {
+		return nil, "InvitationGetMessageReadResponse: NewContactCardFromCompressed", err
+	}
+	return cc, "", nil
+}

client/helpers/invitationCreateHelper.go

@@ -0,0 +1,135 @@
+package helpers
+
+import (
+	"os"
+	"time"
+
+	"forge.redroom.link/yves/meowlib"
+	"forge.redroom.link/yves/meowlib/client"
+)
+
+// InvitationCreatePeer creates a new peer and returns it
+// Called by invitation initiator
+// name: the name of the peer
+// myNickname: my nickname for that peer
+// invitationMessage: the message to send to the peer
+// serverUids: the list of server uids
+func InvitationCreatePeer(name string, myNickname string, invitationMessage string, serverUids []string) (*client.Peer, string, error) {
+
+	mynick := myNickname
+	if myNickname == "" {
+		mynick = client.GetConfig().GetIdentity().Nickname
+	}
+
+	// build my contact card for that friend
+	peer, err := client.GetConfig().GetIdentity().InvitePeer(mynick, myNickname, serverUids, invitationMessage)
+	if err != nil {
+		return nil, "InvitationCreate: InvitePeer", err
+	}
+	client.GetConfig().GetIdentity().Save()
+
+	return peer, "", nil
+}
+
+// InvitationCreateFile creates a new peer and writes the invitation to a file
+// Called by invitation initiator
+// name: the name of the peer
+// myNickname: my nickname for that peer
+// invitationMessage: the message to send to the peer
+// serverUids: the list of server uids
+// format: the format of the file (qr or mwiv)
+func InvitationCreateFile(name string, myNickname string, invitationMessage string, serverUids []string, format string) (*client.Peer, string, error) {
+
+	peer, errdata, err := InvitationCreatePeer(name, myNickname, invitationMessage, serverUids)
+	if err != nil {
+		return nil, errdata, err
+	}
+	c := client.GetConfig()
+	var filename string = ""
+	if format == "qr" {
+		filename = c.StoragePath + string(os.PathSeparator) + peer.MyName + "-" + peer.Name + ".png"
+		err := peer.GetMyContact().WriteQr(filename)
+		if err != nil {
+			return nil, "InvitationCreateFile: WriteQr", err
+		}
+	} else {
+		filename = c.StoragePath + string(os.PathSeparator) + peer.MyName + "-" + peer.Name + ".mwiv"
+		err := peer.GetMyContact().WriteCompressed(filename)
+		if err != nil {
+			return nil, "InvitationCreateFile: WriteCompressed", err
+		}
+	}
+	return peer, "", nil
+}
+
+// InvitationCreateMessage creates a new invitation message for an invited peer
+// Called by invitation initiator
+// invitationId: the invitation id of the peer
+// invitationServerUid: the uid of the server for sending the invitation
+// timeOut: the timeout for the invitation
+// urlLen: the length of the invitation url
+// password: the password for the invitation
+func InvitationCreateMessage(invitationId string, invitationServerUid string, timeOut int, urlLen int, password string) ([]byte, string, error) {
+
+	// lookup for peer with "invitation_id"
+	var myContact *meowlib.ContactCard
+	for i := 0; i < len(client.GetConfig().GetIdentity().Peers); i++ {
+		if client.GetConfig().GetIdentity().Peers[i].InvitationId == invitationId {
+			myContact = client.GetConfig().GetIdentity().Peers[i].GetMyContact()
+			break
+		}
+	}
+	// todo handle not found !!
+	// lookup for message server with "invitation_server"
+	invitationServer, err := client.GetConfig().GetIdentity().MessageServers.LoadServer(invitationServerUid) //.GetServerByIdx(int(jsoninv["invitation_server"].(float64)))
+	if err != nil {
+		return nil, "InvitationCreateMessage: LoadServer", err
+	}
+	// call server.buildinviattion
+	msg, err := invitationServer.BuildToServerMessageInvitationCreation(myContact, password, timeOut, urlLen)
+	if err != nil {
+		return nil, "InvitationCreateMessage: BuildToServerMessageInvitationCreation", err
+	}
+	// fmt.Println("Invitation Create")
+	// fmt.Println(hex.EncodeToString(msg.Invitation.Payload))
+	bytemsg, err := invitationServer.ProcessOutboundMessage(msg)
+	if err != nil {
+		return nil, "InvitationCreateMessage: ProcessOutboundMessage", err
+	}
+	return bytemsg, "", nil
+}
+
+// InvitationCreateReadResponse reads the response of an invitation creation (url, expiry)
+// Called by invitation initiator
+// invitationServerUid: the uid of the server where we sent the invitation
+// invitationResponse: the response we got from the server
+func InvitationCreateReadResponse(invitationServerUid string, invitationResponse []byte) (*meowlib.Invitation, string, error) {
+
+	server, err := client.GetConfig().GetIdentity().MessageServers.LoadServer(invitationServerUid)
+	if err != nil {
+		return nil, "InvitationCreateReadResponse: LoadServer", err
+	}
+	serverMsg, err := server.ProcessInboundServerResponse(invitationResponse)
+	if err != nil {
+		return nil, "InvitationCreateReadResponse: ProcessInboundServerResponse", err
+	}
+
+	return serverMsg.Invitation, "", nil
+}
+
+// InvitationSetUrlInfo sets the url info for an invitation
+// Called by invitation initiator
+// invitationId: the invitation id of the peer
+// url: the url of the invitation we got from the server
+func InvitationSetUrlInfo(invitationId string, url string, expiry int64) {
+
+	for i := 0; i < len(client.GetConfig().GetIdentity().Peers); i++ {
+		if client.GetConfig().GetIdentity().Peers[i].InvitationId == invitationId {
+			client.GetConfig().GetIdentity().Peers[i].InvitationUrl = url
+			client.GetConfig().GetIdentity().Peers[i].InvitationExpiry = time.Unix(expiry, 0)
+			break
+		}
+	}
+	client.GetConfig().GetIdentity().Save()
+
+}

client/helpers/messageHelper.go

@@ -0,0 +1,37 @@
+package helpers
+
+import "forge.redroom.link/yves/meowlib/client"
+
+func PrepareUserMessage(message string, srvuid string, peer_idx int, filelist []string) ([]byte, string, error) {
+
+	peer := client.GetConfig().GetIdentity().Peers[peer_idx]
+	srv, err := client.GetConfig().GetIdentity().MessageServers.LoadServer(srvuid)
+	if err != nil {
+		return nil, "PrepareServerMessage : LoadServer", err
+	}
+	// Creating User message
+	usermessage, err := peer.BuildSimpleUserMessage([]byte(message))
+	if err != nil {
+		return nil, "PrepareServerMessage : BuildSimpleUserMessage", err
+	}
+	for _, file := range filelist {
+		err = usermessage.AddFile(file, client.GetConfig().Chunksize)
+		if err != nil {
+			return nil, "PrepareServerMessage : AddFile", err
+		}
+	}
+	// Store message
+	peer.StoreMessage(usermessage, filelist)
+	// Prepare cyphered + packed user message
+	packedMsg, err := peer.ProcessOutboundUserMessage(usermessage)
+	if err != nil {
+		return nil, "PrepareServerMessage : ProcessOutboundUserMessage", err
+	}
+	// Creating Server message for transporting the user message
+	toServerMessage := srv.BuildToServerMessageFromUserMessage(packedMsg)
+	data, err := srv.ProcessOutboundMessage(toServerMessage)
+	if err != nil {
+		return nil, "PrepareServerMessage : ProcessOutboundMessage", err
+	}
+	return data, "", nil
+}

client/helpers/serverHelper.go

@@ -0,0 +1 @@
+package helpers