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efaa6264cc
It was a good decision in hindsight to keep the public module as 0.x because this would have been a breaking change again. https://mattermost.atlassian.net/browse/MM-53032 ```release-note Changed the Go module path from github.com/mattermost/mattermost-server/server/v8 to github.com/mattermost/mattermost/server/v8. For the public facing module, it's path is also changed from github.com/mattermost/mattermost-server/server/public to github.com/mattermost/mattermost/server/public ```
84 lines
3 KiB
Go
84 lines
3 KiB
Go
// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
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// See LICENSE.txt for license information.
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package sharedchannel
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import (
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"context"
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"net/url"
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"regexp"
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"strings"
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"github.com/mattermost/mattermost/server/public/model"
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"github.com/mattermost/mattermost/server/public/shared/i18n"
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"github.com/mattermost/mattermost/server/public/shared/mlog"
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)
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var (
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// Team name regex taken from model.IsValidTeamName
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permaLinkRegex = regexp.MustCompile(`https?://[0-9.\-A-Za-z]+/[a-z0-9]+([a-z\-0-9]+|(__)?)[a-z0-9]+/pl/([a-zA-Z0-9]+)`)
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permaLinkSharedRegex = regexp.MustCompile(`https?://[0-9.\-A-Za-z]+/[a-z0-9]+([a-z\-0-9]+|(__)?)[a-z0-9]+/plshared/([a-zA-Z0-9]+)`)
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)
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const (
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permalinkMarker = "plshared"
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)
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// processPermalinkToRemote processes all permalinks going towards a remote site.
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func (scs *Service) processPermalinkToRemote(p *model.Post) string {
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var sent bool
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return permaLinkRegex.ReplaceAllStringFunc(p.Message, func(msg string) string {
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// Extract the postID (This is simple enough not to warrant full-blown URL parsing.)
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lastSlash := strings.LastIndexByte(msg, '/')
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postID := msg[lastSlash+1:]
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opts := model.GetPostsOptions{
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SkipFetchThreads: true,
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}
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postList, err := scs.server.GetStore().Post().Get(context.Background(), postID, opts, "", map[string]bool{})
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if err != nil {
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scs.server.Log().Log(mlog.LvlSharedChannelServiceWarn, "Unable to get post during replacing permalinks", mlog.Err(err))
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return msg
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}
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if len(postList.Order) == 0 {
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scs.server.Log().Log(mlog.LvlSharedChannelServiceWarn, "No post found for permalink", mlog.String("postID", postID))
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return msg
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}
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// If postID is for a different channel
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if postList.Posts[postList.Order[0]].ChannelId != p.ChannelId {
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// Send ephemeral message to OP (only once per message).
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if !sent {
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scs.sendEphemeralPost(p.ChannelId, p.UserId, i18n.T("sharedchannel.permalink.not_found"))
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sent = true
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}
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// But don't modify msg
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return msg
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}
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// Otherwise, modify pl to plshared as a marker to be replaced by remote sites
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return strings.Replace(msg, "/pl/", "/"+permalinkMarker+"/", 1)
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})
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}
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// processPermalinkFromRemote processes all permalinks coming from a remote site.
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func (scs *Service) processPermalinkFromRemote(p *model.Post, team *model.Team) string {
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return permaLinkSharedRegex.ReplaceAllStringFunc(p.Message, func(remoteLink string) string {
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// Extract host name
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parsed, err := url.Parse(remoteLink)
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if err != nil {
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scs.server.Log().Log(mlog.LvlSharedChannelServiceWarn, "Unable to parse the remote link during replacing permalinks", mlog.Err(err))
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return remoteLink
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}
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// Replace with local SiteURL
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parsed.Scheme = scs.siteURL.Scheme
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parsed.Host = scs.siteURL.Host
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// Replace team name with local team
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teamEnd := strings.Index(parsed.Path, "/"+permalinkMarker)
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parsed.Path = "/" + team.Name + parsed.Path[teamEnd:]
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// Replace plshared with pl
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return strings.Replace(parsed.String(), "/"+permalinkMarker+"/", "/pl/", 1)
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})
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}
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