mirror of
https://github.com/mattermost/mattermost.git
synced 2025-02-25 18:55:24 -06:00
02196e04fa
Remote Cluster Service - provides ability for multiple Mattermost cluster instances to create a trusted connection with each other and exchange messages - trusted connections are managed via slash commands (for now) - facilitates features requiring inter-cluster communication, such as Shared Channels Shared Channels Service - provides ability to shared channels between one or more Mattermost cluster instances (using trusted connection) - sharing/unsharing of channels is managed via slash commands (for now)
82 lines
2.9 KiB
Go
82 lines
2.9 KiB
Go
// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
|
|
// See LICENSE.txt for license information.
|
|
|
|
package sharedchannel
|
|
|
|
import (
|
|
"context"
|
|
"net/url"
|
|
"regexp"
|
|
"strings"
|
|
|
|
"github.com/mattermost/mattermost-server/v5/model"
|
|
"github.com/mattermost/mattermost-server/v5/shared/i18n"
|
|
"github.com/mattermost/mattermost-server/v5/shared/mlog"
|
|
)
|
|
|
|
var (
|
|
// Team name regex taken from model.IsValidTeamName
|
|
permaLinkRegex = regexp.MustCompile(`https?://[0-9.\-A-Za-z]+/[a-z0-9]+([a-z\-0-9]+|(__)?)[a-z0-9]+/pl/([a-zA-Z0-9]+)`)
|
|
permaLinkSharedRegex = regexp.MustCompile(`https?://[0-9.\-A-Za-z]+/[a-z0-9]+([a-z\-0-9]+|(__)?)[a-z0-9]+/plshared/([a-zA-Z0-9]+)`)
|
|
)
|
|
|
|
const (
|
|
permalinkMarker = "plshared"
|
|
)
|
|
|
|
// processPermalinkToRemote processes all permalinks going towards a remote site.
|
|
func (scs *Service) processPermalinkToRemote(p *model.Post) string {
|
|
var sent bool
|
|
return permaLinkRegex.ReplaceAllStringFunc(p.Message, func(msg string) string {
|
|
// Extract the postID (This is simple enough not to warrant full-blown URL parsing.)
|
|
lastSlash := strings.LastIndexByte(msg, '/')
|
|
postID := msg[lastSlash+1:]
|
|
postList, err := scs.server.GetStore().Post().Get(context.Background(), postID, true, false, false, "")
|
|
if err != nil {
|
|
scs.server.GetLogger().Log(mlog.LvlSharedChannelServiceWarn, "Unable to get post during replacing permalinks", mlog.Err(err))
|
|
return msg
|
|
}
|
|
if len(postList.Order) == 0 {
|
|
scs.server.GetLogger().Log(mlog.LvlSharedChannelServiceWarn, "No post found for permalink", mlog.String("postID", postID))
|
|
return msg
|
|
}
|
|
|
|
// If postID is for a different channel
|
|
if postList.Posts[postList.Order[0]].ChannelId != p.ChannelId {
|
|
// Send ephemeral message to OP (only once per message).
|
|
if !sent {
|
|
scs.sendEphemeralPost(p.ChannelId, p.UserId, i18n.T("sharedchannel.permalink.not_found"))
|
|
sent = true
|
|
}
|
|
// But don't modify msg
|
|
return msg
|
|
}
|
|
|
|
// Otherwise, modify pl to plshared as a marker to be replaced by remote sites
|
|
return strings.Replace(msg, "/pl/", "/"+permalinkMarker+"/", 1)
|
|
})
|
|
}
|
|
|
|
// processPermalinkFromRemote processes all permalinks coming from a remote site.
|
|
func (scs *Service) processPermalinkFromRemote(p *model.Post, team *model.Team) string {
|
|
return permaLinkSharedRegex.ReplaceAllStringFunc(p.Message, func(remoteLink string) string {
|
|
// Extract host name
|
|
parsed, err := url.Parse(remoteLink)
|
|
if err != nil {
|
|
scs.server.GetLogger().Log(mlog.LvlSharedChannelServiceWarn, "Unable to parse the remote link during replacing permalinks", mlog.Err(err))
|
|
return remoteLink
|
|
}
|
|
|
|
// Replace with local SiteURL
|
|
parsed.Scheme = scs.siteURL.Scheme
|
|
parsed.Host = scs.siteURL.Host
|
|
|
|
// Replace team name with local team
|
|
teamEnd := strings.Index(parsed.Path, "/"+permalinkMarker)
|
|
parsed.Path = "/" + team.Name + parsed.Path[teamEnd:]
|
|
|
|
// Replace plshared with pl
|
|
return strings.Replace(parsed.String(), "/"+permalinkMarker+"/", "/pl/", 1)
|
|
})
|
|
}
|