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0086e0b356
- There is no need to have groups as we're only using this regex for `MatchString`. - Since the only place where this regex is used is already calling strings.ToLower, there is no need to check for `A-Z`.
69 lines
1.5 KiB
Go
69 lines
1.5 KiB
Go
// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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package validator // import "miniflux.app/v2/internal/validator"
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import (
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"fmt"
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"net/url"
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"regexp"
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"strings"
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)
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var domainRegex = regexp.MustCompile(`^(?:[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?\.)+[a-z]{2,}$`)
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// ValidateRange makes sure the offset/limit values are valid.
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func ValidateRange(offset, limit int) error {
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if offset < 0 {
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return fmt.Errorf(`offset value should be >= 0`)
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}
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if limit < 0 {
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return fmt.Errorf(`limit value should be >= 0`)
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}
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return nil
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}
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// ValidateDirection makes sure the sorting direction is valid.
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func ValidateDirection(direction string) error {
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switch direction {
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case "asc", "desc":
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return nil
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}
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return fmt.Errorf(`invalid direction, valid direction values are: "asc" or "desc"`)
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}
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// IsValidRegex verifies if the regex can be compiled.
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func IsValidRegex(expr string) bool {
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_, err := regexp.Compile(expr)
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return err == nil
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}
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// IsValidURL verifies if the provided value is a valid absolute URL.
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func IsValidURL(absoluteURL string) bool {
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_, err := url.ParseRequestURI(absoluteURL)
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return err == nil
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}
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func IsValidDomain(domain string) bool {
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domain = strings.ToLower(domain)
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if len(domain) < 1 || len(domain) > 253 {
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return false
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}
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return domainRegex.MatchString(domain)
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}
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func IsValidDomainList(value string) bool {
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domains := strings.Split(strings.TrimSpace(value), " ")
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for _, domain := range domains {
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if !IsValidDomain(domain) {
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return false
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}
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}
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return true
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}
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