129 lines
3.5 KiB
Go
129 lines
3.5 KiB
Go
/*
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* Copyright © 2018-2021 A Bunch Tell LLC.
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*
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* This file is part of WriteFreely.
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*
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* WriteFreely is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, included
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* in the LICENSE file in this source code package.
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*/
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package author
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import (
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"github.com/writefreely/writefreely/config"
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"os"
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"path/filepath"
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"regexp"
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)
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// Regex pattern for valid usernames
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var validUsernameReg = regexp.MustCompile("^[a-zA-Z0-9][a-zA-Z0-9-]*$")
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// List of reserved usernames
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var reservedUsernames = map[string]bool{
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"a": true,
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"about": true,
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"add": true,
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"admin": true,
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"administrator": true,
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"adminzone": true,
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"api": true,
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"article": true,
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"articles": true,
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"auth": true,
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"authenticate": true,
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"browse": true,
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"c": true,
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"categories": true,
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"category": true,
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"changes": true,
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"community": true,
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"create": true,
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"css": true,
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"data": true,
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"dev": true,
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"developers": true,
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"draft": true,
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"drafts": true,
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"edit": true,
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"edits": true,
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"faq": true,
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"feed": true,
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"feedback": true,
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"guide": true,
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"guides": true,
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"help": true,
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"index": true,
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"invite": true,
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"js": true,
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"login": true,
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"logout": true,
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"me": true,
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"media": true,
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"meta": true,
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"metadata": true,
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"new": true,
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"news": true,
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"oauth": true,
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"post": true,
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"posts": true,
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"privacy": true,
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"publication": true,
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"publications": true,
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"publish": true,
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"random": true,
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"read": true,
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"reader": true,
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"register": true,
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"remove": true,
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"signin": true,
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"signout": true,
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"signup": true,
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"start": true,
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"status": true,
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"summary": true,
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"support": true,
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"tag": true,
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"tags": true,
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"team": true,
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"template": true,
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"templates": true,
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"terms": true,
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"terms-of-service": true,
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"termsofservice": true,
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"theme": true,
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"themes": true,
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"tips": true,
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"tos": true,
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"update": true,
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"updates": true,
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"user": true,
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"users": true,
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"yourname": true,
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}
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// IsValidUsername returns true if a given username is neither reserved nor
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// of the correct format.
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func IsValidUsername(cfg *config.Config, username string) bool {
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// Username has to be above a character limit
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if len(username) < cfg.App.MinUsernameLen {
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return false
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}
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// Username is invalid if page with the same name exists. So traverse
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// available pages, adding them to reservedUsernames map that'll be checked
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// later.
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filepath.Walk(filepath.Join(cfg.Server.PagesParentDir, "pages"), func(path string, i os.FileInfo, err error) error {
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reservedUsernames[i.Name()] = true
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return nil
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})
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// Username is invalid if it is reserved!
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if _, reserved := reservedUsernames[username]; reserved {
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return false
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}
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// TODO: use correct regexp function here
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return len(validUsernameReg.FindStringSubmatch(username)) > 0
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}
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