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util.go
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util.go
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// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.
package sharedchannel
import (
"fmt"
"strings"
"github.com/mattermost/mattermost-server/v6/model"
)
// fixMention replaces any mentions in a post for the user with the user's real username.
func fixMention(post *model.Post, mentionMap model.UserMentionMap, user *model.User) {
if post == nil || len(mentionMap) == 0 {
return
}
realUsername, ok := user.GetProp(KeyRemoteUsername)
if !ok {
return
}
// there may be more than one mention for each user so we have to walk the whole map.
for mention, id := range mentionMap {
if id == user.Id && strings.Contains(mention, ":") {
post.Message = strings.ReplaceAll(post.Message, "@"+mention, "@"+realUsername)
}
}
}
func sanitizeUserForSync(user *model.User) *model.User {
user.Password = model.NewId()
user.AuthData = nil
user.AuthService = ""
user.Roles = "system_user"
user.AllowMarketing = false
user.NotifyProps = model.StringMap{}
user.LastPasswordUpdate = 0
user.LastPictureUpdate = 0
user.FailedAttempts = 0
user.MfaActive = false
user.MfaSecret = ""
return user
}
// mungUsername creates a new username by combining username and remote cluster name, plus
// a suffix to create uniqueness. If the resulting username exceeds the max length then
// it is truncated and ellipses added.
func mungUsername(username string, remotename string, suffix string, maxLen int) string {
if suffix != "" {
suffix = "~" + suffix
}
// If the username already contains a colon then another server already munged it.
// In that case we can split on the colon and use the existing remote name.
// We still need to re-mung with suffix in case of collision.
comps := strings.Split(username, ":")
if len(comps) >= 2 {
username = comps[0]
remotename = strings.Join(comps[1:], "")
}
var userEllipses string
var remoteEllipses string
// The remotename is allowed to use up to half the maxLen, and the username gets the remaining space.
// Username might have a suffix to account for, and remotename always has a preceding colon.
half := maxLen / 2
// If the remotename is less than half the maxLen, then the left over space can be given to
// the username.
extra := half - (len(remotename) + 1)
if extra < 0 {
extra = 0
}
truncUser := (len(username) + len(suffix)) - (half + extra)
if truncUser > 0 {
username = username[:len(username)-truncUser-3]
userEllipses = "..."
}
truncRemote := (len(remotename) + 1) - (maxLen - (len(username) + len(userEllipses) + len(suffix)))
if truncRemote > 0 {
remotename = remotename[:len(remotename)-truncRemote-3]
remoteEllipses = "..."
}
return fmt.Sprintf("%s%s%s:%s%s", username, suffix, userEllipses, remotename, remoteEllipses)
}
// mungEmail creates a unique email address using a UID and remote name.
func mungEmail(remotename string, maxLen int) string {
s := fmt.Sprintf("%s@%s", model.NewId(), remotename)
if len(s) > maxLen {
s = s[:maxLen]
}
return s
}