Files
jiang13-forum/services/sanitize_html.go
freefire 3f50316ad0 fix: 完成 Gitea 目录改组收尾(import、构建与 LICENSE)
同步包路径与路由,去掉 SPA 构建步骤,对齐 Gitea 式 LICENSE,并更新规格/规则与占位 SSR。

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-29 04:01:20 +08:00

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package services
import (
"sync"
"github.com/microcosm-cc/bluemonday"
)
var (
postHTMLPolicyOnce sync.Once
postHTMLPolicy *bluemonday.Policy
)
// postContentHTMLPolicy 帖子正文白名单:对齐前端编辑器产出,禁止 style/script 等泄漏或执行向量。
func postContentHTMLPolicy() *bluemonday.Policy {
postHTMLPolicyOnce.Do(func() {
p := bluemonday.UGCPolicy()
// TipTap / Markdown 转换会用到的结构
p.AllowElements("div", "span", "u", "s", "center", "members-only", "reply-only", "points-only")
p.AllowAttrs("class").OnElements(
"p", "div", "span", "pre", "code", "img", "a",
"h1", "h2", "h3", "h4", "h5", "h6",
"blockquote", "ul", "ol", "li", "table", "thead", "tbody", "tr", "th", "td",
"members-only", "reply-only", "points-only",
)
p.AllowAttrs("colspan", "rowspan").OnElements("th", "td")
p.AllowAttrs(
"data-locked", "data-length", "data-gate", "data-cost", "data-block-key",
"data-code-copy", "data-code-fold", "data-lang", "data-full",
"data-code-style", "data-line-numbers", "data-collapsed",
"data-line-count", "data-lineno-digits",
"data-image-group", "data-layout", "data-display",
"data-clear-float",
).Globally()
p.AllowAttrs("target", "rel").OnElements("a")
// bluemonday 默认会剥 style 标签与 style 属性;此处不再放行
postHTMLPolicy = p
})
return postHTMLPolicy
}
// SanitizePostHTML 清洗帖子 HTML防止 <style> 等污染整页或脚本注入。
func SanitizePostHTML(html string) string {
if html == "" {
return ""
}
return postContentHTMLPolicy().Sanitize(html)
}