49 lines
1.2 KiB
Go
49 lines
1.2 KiB
Go
// Copyright 2017 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package utils
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import (
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"fmt"
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"html"
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"io"
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"net/url"
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"strings"
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"code.gitea.io/gitea/modules/setting"
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)
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// SanitizeFlashErrorString will sanitize a flash error string
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func SanitizeFlashErrorString(x string) string {
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return strings.ReplaceAll(html.EscapeString(x), "\n", "<br>")
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}
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// IsExternalURL checks if rawURL points to an external URL like http://example.com
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func IsExternalURL(rawURL string) bool {
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parsed, err := url.Parse(rawURL)
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if err != nil {
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return true
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}
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appURL, _ := url.Parse(setting.AppURL)
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if len(parsed.Host) != 0 && strings.Replace(parsed.Host, "www.", "", 1) != strings.Replace(appURL.Host, "www.", "", 1) {
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return true
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}
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return false
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}
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// Limit number of characters in a string (useful to prevent log injection attacks and overly long log outputs)
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// Thanks to https://www.socketloop.com/tutorials/golang-characters-limiter-example
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func CharLimiter(s string, limit int) string {
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reader := strings.NewReader(s)
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buff := make([]byte, limit)
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n, _ := io.ReadAtLeast(reader, buff, limit)
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if n != 0 {
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return fmt.Sprint(string(buff), "...")
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} else {
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return s
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}
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}
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