From 52d4e8ec47ba196f7c502e6541141b82a6d29097 Mon Sep 17 00:00:00 2001
From: MadDogOwner <xiaoran@xrgzs.top>
Date: Sat, 19 Apr 2025 14:24:43 +0800
Subject: [PATCH] fix(lanzou): remove JavaScript comments from response data
 (#8386)

* feat(lanzou): add RemoveJSComment function to clean JavaScript comments from HTML

* feat(lanzou): remove comments from share page data in getFilesByShareUrl function

* fix(lanzou): optimize RemoveJSComment function to improve comment removal logic
---
 drivers/lanzou/help.go | 36 ++++++++++++++++++++++++++++++++++++
 drivers/lanzou/util.go |  4 ++++
 2 files changed, 40 insertions(+)

diff --git a/drivers/lanzou/help.go b/drivers/lanzou/help.go
index 81d7c567..c3f5c6bb 100644
--- a/drivers/lanzou/help.go
+++ b/drivers/lanzou/help.go
@@ -78,6 +78,42 @@ func RemoveNotes(html string) string {
 	})
 }
 
+// 清理JS注释
+func RemoveJSComment(data string) string {
+	var result strings.Builder
+	inComment := false
+	inSingleLineComment := false
+
+	for i := 0; i < len(data); i++ {
+		v := data[i]
+
+		if inSingleLineComment && (v == '\n' || v == '\r') {
+			inSingleLineComment = false
+			result.WriteByte(v)
+			continue
+		}
+		if inComment && v == '*' && i+1 < len(data) && data[i+1] == '/' {
+			inComment = false
+			continue
+		}
+		if v == '/' && i+1 < len(data) {
+			nextChar := data[i+1]
+			if nextChar == '*' {
+				inComment = true
+				i++
+				continue
+			} else if nextChar == '/' {
+				inSingleLineComment = true
+				i++
+				continue
+			}
+		}
+		result.WriteByte(v)
+	}
+
+	return result.String()
+}
+
 var findAcwScV2Reg = regexp.MustCompile(`arg1='([0-9A-Z]+)'`)
 
 // 在页面被过多访问或其他情况下，有时候会先返回一个加密的页面，其执行计算出一个acw_sc__v2后放入页面后再重新访问页面才能获得正常页面
diff --git a/drivers/lanzou/util.go b/drivers/lanzou/util.go
index 4b9959ad..e66252bc 100644
--- a/drivers/lanzou/util.go
+++ b/drivers/lanzou/util.go
@@ -348,6 +348,10 @@ func (d *LanZou) getFilesByShareUrl(shareID, pwd string, sharePageData string) (
 		file        FileOrFolderByShareUrl
 	)
 
+	// 删除注释
+	sharePageData = RemoveNotes(sharePageData)
+	sharePageData = RemoveJSComment(sharePageData)
+
 	// 需要密码
 	if strings.Contains(sharePageData, "pwdload") || strings.Contains(sharePageData, "passwddiv") {
 		sharePageData, err := getJSFunctionByName(sharePageData, "down_p")