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