示例#1
0
文件: pm.go 项目: logan/heim
func (t *PMTracker) Initiate(
	ctx scope.Context, kms security.KMS, room proto.Room, client *proto.Client, recipient proto.UserID) (
	snowflake.Snowflake, error) {

	initiatorNick, ok, err := room.ResolveNick(ctx, proto.UserID(fmt.Sprintf("account:%s", client.Account.ID())))
	if err != nil {
		return 0, err
	}
	if !ok {
		initiatorNick = fmt.Sprintf("account:%s", client.Account.ID())
	}

	recipientNick, ok, err := room.ResolveNick(ctx, recipient)
	if err != nil {
		return 0, err
	}
	if !ok {
		recipientNick = string(recipient)
	}

	pm, err := proto.InitiatePM(ctx, t.Backend, kms, client, initiatorNick, recipient, recipientNick)
	if err != nil {
		return 0, err
	}
	row := &PM{
		ID:                    pm.ID.String(),
		Initiator:             pm.Initiator.String(),
		InitiatorNick:         pm.InitiatorNick,
		Receiver:              string(pm.Receiver),
		ReceiverNick:          pm.ReceiverNick,
		ReceiverMAC:           pm.ReceiverMAC,
		IV:                    pm.IV,
		EncryptedSystemKey:    pm.EncryptedSystemKey.Ciphertext,
		EncryptedInitiatorKey: pm.EncryptedInitiatorKey.Ciphertext,
	}
	if pm.EncryptedReceiverKey != nil {
		row.EncryptedReceiverKey = pm.EncryptedReceiverKey.Ciphertext
	}

	// Look for existing PM to reuse.
	tx, err := t.DbMap.Begin()
	if err != nil {
		return 0, err
	}

	var existingRow PM
	err = tx.SelectOne(
		&existingRow,
		"SELECT id FROM pm WHERE initiator = $1 AND receiver = $2",
		client.Account.ID().String(), string(recipient))
	if err != nil && err != sql.ErrNoRows {
		rollback(ctx, tx)
		return 0, err
	}
	if err == nil {
		rollback(ctx, tx)
		var pmID snowflake.Snowflake
		if err := pmID.FromString(existingRow.ID); err != nil {
			return 0, err
		}
		return pmID, nil
	}

	kind, id := recipient.Parse()
	if kind == "account" {
		var existingRow PM
		err = tx.SelectOne(
			&existingRow,
			"SELECT id FROM pm WHERE initiator = $1 AND receiver = $2",
			id, string(client.UserID()))
		if err != nil && err != sql.ErrNoRows {
			rollback(ctx, tx)
			return 0, err
		}
		if err == nil {
			rollback(ctx, tx)
			var pmID snowflake.Snowflake
			if err := pmID.FromString(existingRow.ID); err != nil {
				return 0, err
			}
			return pmID, nil
		}
	}

	if err := tx.Insert(row); err != nil {
		rollback(ctx, tx)
		return 0, err
	}

	if err := tx.Commit(); err != nil {
		return 0, err
	}

	return pm.ID, nil
}
示例#2
0
文件: pm.go 项目: logan/heim
func (t *PMTracker) Initiate(
	ctx scope.Context, kms security.KMS, room proto.Room, client *proto.Client, recipient proto.UserID) (
	snowflake.Snowflake, error) {

	t.m.Lock()
	defer t.m.Unlock()

	// Look for reusable PM.
	for pmID, pm := range t.pms {
		if pm.pm.Initiator == client.Account.ID() && pm.pm.Receiver == recipient {
			return pmID, nil
		}
		if pm.pm.Receiver == client.UserID() {
			kind, id := pm.pm.Receiver.Parse()
			if kind == "account" && id == pm.pm.Initiator.String() {
				return pmID, nil
			}
		}
	}

	// Create new PM.
	initiatorNick, ok, err := room.ResolveNick(ctx, proto.UserID(fmt.Sprintf("account:%s", client.Account.ID())))
	if err != nil {
		return 0, err
	}
	if !ok {
		initiatorNick = fmt.Sprintf("account:%s", client.Account.ID())
	}

	recipientNick, ok, err := room.ResolveNick(ctx, recipient)
	if err != nil {
		return 0, err
	}
	if !ok {
		recipientNick = string(recipient)
	}

	pm, err := proto.InitiatePM(ctx, t.b, kms, client, initiatorNick, recipient, recipientNick)
	if err != nil {
		return 0, err
	}

	pmKey, _, otherName, err := pm.Access(ctx, t.b, kms, client)
	if err != nil {
		return 0, err
	}

	if t.pms == nil {
		t.pms = map[snowflake.Snowflake]*PM{}
	}
	t.pms[pm.ID] = &PM{
		RoomBase: RoomBase{
			name:    fmt.Sprintf("private chat with %s", otherName),
			version: t.b.version,
			log:     newMemLog(),
			messageKey: &roomMessageKey{
				id:        fmt.Sprintf("pm:%s", pm.ID),
				timestamp: time.Now(),
				key:       *pmKey,
			},
		},
		pm: pm,
	}
	return pm.ID, nil
}