521 lines
14 KiB
Go
521 lines
14 KiB
Go
package protocol
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import (
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"context"
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"crypto/ecdsa"
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"errors"
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"go.uber.org/zap"
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"github.com/golang/protobuf/proto"
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"github.com/status-im/status-go/protocol/common"
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"github.com/status-im/status-go/protocol/protobuf"
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"github.com/status-im/status-go/protocol/requests"
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)
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var ErrInvalidEditOrDeleteAuthor = errors.New("sender is not the author of the message")
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var ErrInvalidDeleteTypeAuthor = errors.New("message type cannot be deleted")
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var ErrInvalidEditContentType = errors.New("only text or emoji messages can be replaced")
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var ErrInvalidDeletePermission = errors.New("don't have enough permission to delete")
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func (m *Messenger) EditMessage(ctx context.Context, request *requests.EditMessage) (*MessengerResponse, error) {
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err := request.Validate()
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if err != nil {
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return nil, err
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}
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message, err := m.persistence.MessageByID(request.ID.String())
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if err != nil {
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return nil, err
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}
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if message.From != common.PubkeyToHex(&m.identity.PublicKey) {
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return nil, ErrInvalidEditOrDeleteAuthor
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}
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if message.ContentType != protobuf.ChatMessage_TEXT_PLAIN && message.ContentType != protobuf.ChatMessage_EMOJI && message.ContentType != protobuf.ChatMessage_IMAGE {
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return nil, ErrInvalidEditContentType
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}
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// A valid added chat is required.
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chat, ok := m.allChats.Load(message.ChatId)
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if !ok {
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return nil, ErrChatNotFound
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}
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messages, err := m.getOtherMessagesInAlbum(message, message.LocalChatID)
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if err != nil {
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return nil, err
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}
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response := &MessengerResponse{}
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for _, message := range messages {
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//Add LinkPreviews only to first message
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if len(request.LinkPreviews) > 0 {
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message.LinkPreviews = request.LinkPreviews
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}
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if len(request.StatusLinkPreviews) > 0 {
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message.StatusLinkPreviews = request.StatusLinkPreviews
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}
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clock, _ := chat.NextClockAndTimestamp(m.getTimesource())
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editMessage := NewEditMessage()
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replacedText, err := m.mentionsManager.ReplaceWithPublicKey(message.ChatId, request.Text)
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if err != nil {
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m.logger.Error("failed to replace text with public key", zap.String("chatID", message.ChatId), zap.String("text", request.Text))
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// use original text as fallback
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replacedText = request.Text
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}
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editMessage.Text = replacedText
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editMessage.ContentType = request.ContentType
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editMessage.ChatId = message.ChatId
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editMessage.MessageId = message.ID
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editMessage.Clock = clock
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// We consider link previews non-critical data, so we do not want to block
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// messages from being sent.
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unfurledLinks, err := message.ConvertLinkPreviewsToProto()
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if err != nil {
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m.logger.Error("failed to convert link previews", zap.Error(err))
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} else {
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editMessage.UnfurledLinks = unfurledLinks
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}
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unfurledStatusLinks, err := message.ConvertStatusLinkPreviewsToProto()
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if err != nil {
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m.logger.Error("failed to convert status link previews", zap.Error(err))
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} else {
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editMessage.UnfurledStatusLinks = unfurledStatusLinks
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}
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err = m.applyEditMessage(editMessage.EditMessage, message)
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if err != nil {
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return nil, err
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}
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encodedMessage, err := m.encodeChatEntity(chat, editMessage)
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if err != nil {
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return nil, err
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}
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rawMessage := common.RawMessage{
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LocalChatID: chat.ID,
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Payload: encodedMessage,
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MessageType: protobuf.ApplicationMetadataMessage_EDIT_MESSAGE,
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SkipGroupMessageWrap: true,
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ResendAutomatically: true,
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}
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_, err = m.dispatchMessage(ctx, rawMessage)
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if err != nil {
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return nil, err
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}
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if chat.LastMessage != nil && chat.LastMessage.ID == message.ID {
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chat.LastMessage = message
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err := m.saveChat(chat)
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if err != nil {
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return nil, err
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}
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}
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response.AddMessage(message)
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}
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// pull updated messages
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updatedMessages, err := m.persistence.MessagesByResponseTo(request.ID.String())
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if err != nil {
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return nil, err
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}
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response.AddMessages(updatedMessages)
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err = m.prepareMessages(response.messages)
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if err != nil {
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return nil, err
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}
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response.AddChat(chat)
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return response, nil
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}
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func (m *Messenger) CanDeleteMessageForEveryoneInCommunity(communityID string, publicKey *ecdsa.PublicKey) bool {
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if communityID != "" {
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community, err := m.communitiesManager.GetByIDString(communityID)
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if err != nil {
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m.logger.Error("failed to find community", zap.String("communityID", communityID), zap.Error(err))
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return false
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}
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return community.CanDeleteMessageForEveryone(publicKey)
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}
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return false
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}
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func (m *Messenger) CanDeleteMessageForEveryoneInPrivateGroupChat(chat *Chat, publicKey *ecdsa.PublicKey) bool {
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group, err := newProtocolGroupFromChat(chat)
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if err != nil {
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m.logger.Error("failed to find group", zap.String("chatID", chat.ID), zap.Error(err))
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return false
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}
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admins := group.Admins()
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return stringSliceContains(admins, common.PubkeyToHex(publicKey))
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}
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func (m *Messenger) DeleteMessageAndSend(ctx context.Context, messageID string) (*MessengerResponse, error) {
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message, err := m.persistence.MessageByID(messageID)
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if err != nil {
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return nil, err
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}
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// A valid added chat is required.
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chat, ok := m.allChats.Load(message.ChatId)
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if !ok {
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return nil, ErrChatNotFound
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}
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var canDeleteMessageForEveryone = false
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var deletedBy string
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if message.From != common.PubkeyToHex(&m.identity.PublicKey) {
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if message.MessageType == protobuf.MessageType_COMMUNITY_CHAT {
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communityID := chat.CommunityID
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canDeleteMessageForEveryone = m.CanDeleteMessageForEveryoneInCommunity(communityID, &m.identity.PublicKey)
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if !canDeleteMessageForEveryone {
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return nil, ErrInvalidDeletePermission
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}
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} else if message.MessageType == protobuf.MessageType_PRIVATE_GROUP {
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canDeleteMessageForEveryone = m.CanDeleteMessageForEveryoneInPrivateGroupChat(chat, &m.identity.PublicKey)
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if !canDeleteMessageForEveryone {
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return nil, ErrInvalidDeletePermission
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}
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}
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// only add DeletedBy when not deleted by message.From
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deletedBy = contactIDFromPublicKey(m.IdentityPublicKey())
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if !canDeleteMessageForEveryone {
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return nil, ErrInvalidEditOrDeleteAuthor
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}
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}
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// Only certain types of messages can be deleted
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if message.ContentType != protobuf.ChatMessage_TEXT_PLAIN &&
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message.ContentType != protobuf.ChatMessage_STICKER &&
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message.ContentType != protobuf.ChatMessage_EMOJI &&
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message.ContentType != protobuf.ChatMessage_IMAGE &&
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message.ContentType != protobuf.ChatMessage_AUDIO {
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return nil, ErrInvalidDeleteTypeAuthor
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}
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messagesToDelete, err := m.getOtherMessagesInAlbum(message, message.ChatId)
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if err != nil {
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return nil, err
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}
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clock, _ := chat.NextClockAndTimestamp(m.getTimesource())
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deleteMessage := NewDeleteMessage()
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deleteMessage.ChatId = message.ChatId
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deleteMessage.MessageId = messageID
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deleteMessage.Clock = clock
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deleteMessage.DeletedBy = deletedBy
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encodedMessage, err := m.encodeChatEntity(chat, deleteMessage)
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if err != nil {
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return nil, err
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}
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rawMessage := common.RawMessage{
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LocalChatID: chat.ID,
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Payload: encodedMessage,
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MessageType: protobuf.ApplicationMetadataMessage_DELETE_MESSAGE,
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SkipGroupMessageWrap: true,
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ResendAutomatically: true,
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}
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_, err = m.dispatchMessage(ctx, rawMessage)
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if err != nil {
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return nil, err
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}
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response := &MessengerResponse{}
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for _, messageToDelete := range messagesToDelete {
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messageToDelete.Deleted = true
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messageToDelete.DeletedBy = deletedBy
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err = m.persistence.SaveMessages([]*common.Message{messageToDelete})
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if err != nil {
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return nil, err
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}
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response.AddMessage(messageToDelete)
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response.AddRemovedMessage(&RemovedMessage{MessageID: messageToDelete.ID, ChatID: chat.ID, DeletedBy: deletedBy})
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if chat.LastMessage != nil && chat.LastMessage.ID == messageToDelete.ID {
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chat.LastMessage = messageToDelete
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err = m.saveChat(chat)
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if err != nil {
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return nil, err
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}
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}
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// pull updated messages
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updatedMessages, err := m.persistence.MessagesByResponseTo(messageToDelete.ID)
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if err != nil {
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return nil, err
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}
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response.AddMessages(updatedMessages)
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err = m.prepareMessages(response.messages)
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if err != nil {
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return nil, err
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}
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}
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response.AddChat(chat)
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return response, nil
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}
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func (m *Messenger) DeleteMessageForMeAndSync(ctx context.Context, localChatID string, messageID string) (*MessengerResponse, error) {
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message, err := m.persistence.MessageByID(messageID)
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if err != nil {
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return nil, err
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}
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// A valid added chat is required.
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chat, ok := m.allChats.Load(localChatID)
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if !ok {
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return nil, ErrChatNotFound
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}
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// Only certain types of messages can be deleted
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if message.ContentType != protobuf.ChatMessage_TEXT_PLAIN &&
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message.ContentType != protobuf.ChatMessage_STICKER &&
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message.ContentType != protobuf.ChatMessage_EMOJI &&
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message.ContentType != protobuf.ChatMessage_IMAGE &&
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message.ContentType != protobuf.ChatMessage_AUDIO {
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return nil, ErrInvalidDeleteTypeAuthor
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}
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messagesToDelete, err := m.getOtherMessagesInAlbum(message, localChatID)
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if err != nil {
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return nil, err
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}
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response := &MessengerResponse{}
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for _, messageToDelete := range messagesToDelete {
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messageToDelete.DeletedForMe = true
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err = m.persistence.SaveMessages([]*common.Message{messageToDelete})
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if err != nil {
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return nil, err
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}
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if chat.LastMessage != nil && chat.LastMessage.ID == messageToDelete.ID {
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chat.LastMessage = messageToDelete
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err = m.saveChat(chat)
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if err != nil {
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return nil, err
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}
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}
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response.AddMessage(messageToDelete)
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// pull updated messages
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updatedMessages, err := m.persistence.MessagesByResponseTo(messageToDelete.ID)
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if err != nil {
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return nil, err
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}
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response.AddMessages(updatedMessages)
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err = m.prepareMessages(response.messages)
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if err != nil {
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return nil, err
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}
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}
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response.AddChat(chat)
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err = m.withChatClock(func(chatID string, clock uint64) error {
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deletedForMeMessage := &protobuf.SyncDeleteForMeMessage{
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MessageId: messageID,
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Clock: clock,
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}
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if m.hasPairedDevices() {
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encodedMessage, err2 := proto.Marshal(deletedForMeMessage)
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if err2 != nil {
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return err2
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}
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rawMessage := common.RawMessage{
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LocalChatID: chatID,
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Payload: encodedMessage,
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MessageType: protobuf.ApplicationMetadataMessage_SYNC_DELETE_FOR_ME_MESSAGE,
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ResendAutomatically: true,
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}
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_, err2 = m.dispatchMessage(ctx, rawMessage)
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return err2
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}
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return m.persistence.SaveOrUpdateDeleteForMeMessage(deletedForMeMessage)
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})
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if err != nil {
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return response, err
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}
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return response, nil
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}
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func (m *Messenger) applyEditMessage(editMessage *protobuf.EditMessage, message *common.Message) error {
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if err := ValidateText(editMessage.Text); err != nil {
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return err
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}
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message.Text = editMessage.Text
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message.EditedAt = editMessage.Clock
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message.UnfurledLinks = editMessage.UnfurledLinks
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message.UnfurledStatusLinks = editMessage.UnfurledStatusLinks
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if editMessage.ContentType != protobuf.ChatMessage_UNKNOWN_CONTENT_TYPE {
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message.ContentType = editMessage.ContentType
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}
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// Save original message as edit so we can retrieve history
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if message.EditedAt == 0 {
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originalEdit := NewEditMessage()
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originalEdit.Clock = message.Clock
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originalEdit.LocalChatID = message.LocalChatID
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originalEdit.MessageId = message.ID
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originalEdit.Text = message.Text
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originalEdit.ContentType = message.ContentType
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originalEdit.From = message.From
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originalEdit.UnfurledLinks = message.UnfurledLinks
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originalEdit.UnfurledStatusLinks = message.UnfurledStatusLinks
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err := m.persistence.SaveEdit(originalEdit)
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if err != nil {
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return err
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}
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}
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err := message.PrepareContent(common.PubkeyToHex(&m.identity.PublicKey))
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if err != nil {
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return err
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}
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return m.persistence.SaveMessages([]*common.Message{message})
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}
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func (m *Messenger) applyDeleteMessage(messageDeletes []*DeleteMessage, message *common.Message) error {
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if messageDeletes[0].From != message.From {
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return ErrInvalidEditOrDeleteAuthor
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}
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message.Deleted = true
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message.DeletedBy = messageDeletes[0].DeletedBy
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err := message.PrepareContent(common.PubkeyToHex(&m.identity.PublicKey))
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if err != nil {
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return err
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}
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err = m.persistence.SaveMessages([]*common.Message{message})
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if err != nil {
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return err
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}
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return nil
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}
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func (m *Messenger) applyDeleteForMeMessage(message *common.Message) error {
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message.DeletedForMe = true
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err := message.PrepareContent(m.myHexIdentity())
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if err != nil {
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return err
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}
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err = m.persistence.SaveMessages([]*common.Message{message})
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if err != nil {
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return err
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}
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return nil
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}
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func (m *Messenger) addContactRequestPropagatedState(message *common.Message) error {
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chat, ok := m.allChats.Load(message.LocalChatID)
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if !ok {
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return ErrChatNotFound
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}
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if !chat.OneToOne() {
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return nil
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}
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contact, err := m.BuildContact(&requests.BuildContact{PublicKey: chat.ID})
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if err != nil {
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return err
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}
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message.ContactRequestPropagatedState = contact.ContactRequestPropagatedState()
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return nil
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}
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func (m *Messenger) SendOneToOneMessage(request *requests.SendOneToOneMessage) (*MessengerResponse, error) {
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if err := request.Validate(); err != nil {
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return nil, err
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}
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chatID, err := request.HexID()
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if err != nil {
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return nil, err
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}
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_, ok := m.allChats.Load(chatID)
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if !ok {
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// Only one to one chan be muted when it's not in the database
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publicKey, err := common.HexToPubkey(chatID)
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if err != nil {
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return nil, err
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}
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// Create a one to one chat
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chat := CreateOneToOneChat(chatID, publicKey, m.getTimesource())
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err = m.initChatSyncFields(chat)
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if err != nil {
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return nil, err
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}
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err = m.saveChat(chat)
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if err != nil {
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return nil, err
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}
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}
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message := common.NewMessage()
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message.Text = request.Message
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message.ChatId = chatID
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message.ContentType = protobuf.ChatMessage_TEXT_PLAIN
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return m.sendChatMessage(context.Background(), message)
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}
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func (m *Messenger) SendGroupChatMessage(request *requests.SendGroupChatMessage) (*MessengerResponse, error) {
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if err := request.Validate(); err != nil {
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return nil, err
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}
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chatID := request.ID
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_, ok := m.allChats.Load(chatID)
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if !ok {
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return nil, ErrChatNotFound
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}
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message := common.NewMessage()
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message.Text = request.Message
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message.ChatId = chatID
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message.ContentType = protobuf.ChatMessage_TEXT_PLAIN
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return m.sendChatMessage(context.Background(), message)
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}
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