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moving stuff around
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tsmethurst
parent
684bd56528
commit
4696e1a7b3
93 changed files with 878 additions and 1750 deletions
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/*
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GoToSocial
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Copyright (C) 2021 GoToSocial Authors admin@gotosocial.org
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This program 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 as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package util
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import (
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"errors"
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"fmt"
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"net/mail"
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pwv "github.com/wagslane/go-password-validator"
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"golang.org/x/text/language"
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)
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const (
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maximumPasswordLength = 64
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minimumPasswordEntropy = 60 // dictates password strength. See https://github.com/wagslane/go-password-validator
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minimumReasonLength = 40
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maximumReasonLength = 500
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maximumSiteTitleLength = 40
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maximumShortDescriptionLength = 500
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maximumDescriptionLength = 5000
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maximumSiteTermsLength = 5000
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)
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// ValidateNewPassword returns an error if the given password is not sufficiently strong, or nil if it's ok.
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func ValidateNewPassword(password string) error {
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if password == "" {
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return errors.New("no password provided")
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}
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if len(password) > maximumPasswordLength {
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return fmt.Errorf("password should be no more than %d chars", maximumPasswordLength)
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}
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return pwv.Validate(password, minimumPasswordEntropy)
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}
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// ValidateUsername makes sure that a given username is valid (ie., letters, numbers, underscores, check length).
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// Returns an error if not.
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func ValidateUsername(username string) error {
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if username == "" {
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return errors.New("no username provided")
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}
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if !usernameValidationRegex.MatchString(username) {
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return fmt.Errorf("given username %s was invalid: must contain only lowercase letters, numbers, and underscores, max %d characters", username, maximumUsernameLength)
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}
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return nil
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}
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// ValidateEmail makes sure that a given email address is a valid address.
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// Returns an error if not.
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func ValidateEmail(email string) error {
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if email == "" {
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return errors.New("no email provided")
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}
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_, err := mail.ParseAddress(email)
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return err
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}
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// ValidateLanguage checks that the given language string is a 2- or 3-letter ISO 639 code.
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// Returns an error if the language cannot be parsed. See: https://pkg.go.dev/golang.org/x/text/language
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func ValidateLanguage(lang string) error {
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if lang == "" {
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return errors.New("no language provided")
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}
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_, err := language.ParseBase(lang)
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return err
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}
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// ValidateSignUpReason checks that a sufficient reason is given for a server signup request
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func ValidateSignUpReason(reason string, reasonRequired bool) error {
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if !reasonRequired {
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// we don't care!
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// we're not going to do anything with this text anyway if no reason is required
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return nil
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}
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if reason == "" {
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return errors.New("no reason provided")
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}
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if len(reason) < minimumReasonLength {
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return fmt.Errorf("reason should be at least %d chars but '%s' was %d", minimumReasonLength, reason, len(reason))
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}
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if len(reason) > maximumReasonLength {
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return fmt.Errorf("reason should be no more than %d chars but given reason was %d", maximumReasonLength, len(reason))
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}
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return nil
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}
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// ValidateDisplayName checks that a requested display name is valid
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func ValidateDisplayName(displayName string) error {
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// TODO: add some validation logic here -- length, characters, etc
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return nil
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}
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// ValidateNote checks that a given profile/account note/bio is valid
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func ValidateNote(note string) error {
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// TODO: add some validation logic here -- length, characters, etc
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return nil
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}
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// ValidatePrivacy checks that the desired privacy setting is valid
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func ValidatePrivacy(privacy string) error {
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// TODO: add some validation logic here -- length, characters, etc
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return nil
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}
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// ValidateEmojiShortcode just runs the given shortcode through the regular expression
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// for emoji shortcodes, to figure out whether it's a valid shortcode, ie., 2-30 characters,
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// lowercase a-z, numbers, and underscores.
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func ValidateEmojiShortcode(shortcode string) error {
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if !emojiShortcodeValidationRegex.MatchString(shortcode) {
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return fmt.Errorf("shortcode %s did not pass validation, must be between 2 and 30 characters, lowercase letters, numbers, and underscores only", shortcode)
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}
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return nil
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}
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// ValidateSiteTitle ensures that the given site title is within spec.
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func ValidateSiteTitle(siteTitle string) error {
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if len(siteTitle) > maximumSiteTitleLength {
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return fmt.Errorf("site title should be no more than %d chars but given title was %d", maximumSiteTitleLength, len(siteTitle))
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}
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return nil
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}
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// ValidateSiteShortDescription ensures that the given site short description is within spec.
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func ValidateSiteShortDescription(d string) error {
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if len(d) > maximumShortDescriptionLength {
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return fmt.Errorf("short description should be no more than %d chars but given description was %d", maximumShortDescriptionLength, len(d))
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}
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return nil
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}
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// ValidateSiteDescription ensures that the given site description is within spec.
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func ValidateSiteDescription(d string) error {
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if len(d) > maximumDescriptionLength {
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return fmt.Errorf("description should be no more than %d chars but given description was %d", maximumDescriptionLength, len(d))
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}
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return nil
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}
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// ValidateSiteTerms ensures that the given site terms string is within spec.
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func ValidateSiteTerms(t string) error {
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if len(t) > maximumSiteTermsLength {
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return fmt.Errorf("terms should be no more than %d chars but given terms was %d", maximumSiteTermsLength, len(t))
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}
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return nil
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}
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// ValidateULID returns true if the passed string is a valid ULID.
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func ValidateULID(i string) bool {
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return ulidRegex.MatchString(i)
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}
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