From bdf76420705180d69377dae06f1621407fd12077 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=A2=AB=E9=81=97=E5=BF=98=E7=9A=84=E8=AE=B0=E5=BF=86?=
 <32097237+YIWANG-sketch@users.noreply.github.com>
Date: Fri, 1 Nov 2024 20:25:10 +0800
Subject: [PATCH] Add files via upload

---
 you_providers/garbledText.mjs | 49 +++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 you_providers/garbledText.mjs

diff --git a/you_providers/garbledText.mjs b/you_providers/garbledText.mjs
new file mode 100644
index 0000000..923a785
--- /dev/null
+++ b/you_providers/garbledText.mjs
@@ -0,0 +1,49 @@
+import crypto from 'crypto';
+
+export function getRandomInt(min, max) {
+    min = Math.ceil(min);
+    max = Math.floor(max);
+    return Math.floor(Math.random() * (max - min + 1)) + min;
+}
+
+// 插入乱码
+export function insertGarbledText(content) {
+    const enableGarbledStart = process.env.ENABLE_GARBLED_START === 'true';
+    const enableGarbledEnd = process.env.ENABLE_GARBLED_END === 'true';
+
+    if (!enableGarbledStart && !enableGarbledEnd) {
+        return content;
+    }
+
+    // 生成指定长度的随机乱码
+    function generateGarbledText(length) {
+        return crypto.randomBytes(length).toString('hex');
+    }
+
+    let garbledContent = content;
+
+    // 配置参数
+    const startMinLength = parseInt(process.env.GARBLED_START_MIN_LENGTH) || 1000;
+    const startMaxLength = parseInt(process.env.GARBLED_START_MAX_LENGTH) || 5000;
+
+    const endGarbledLength = parseInt(process.env.GARBLED_END_LENGTH) || 500;
+
+    if (enableGarbledStart) {
+        const startGarbledLength = getRandomInt(startMinLength, startMaxLength);
+
+        const byteLength = Math.ceil(startGarbledLength / 2);
+
+        // 生成乱码
+        const startPlaceholder = generateGarbledText(byteLength);
+
+        garbledContent = startPlaceholder + '\n\n\n' + garbledContent.trim();
+    }
+
+    if (enableGarbledEnd) {
+        const byteLength = Math.ceil(endGarbledLength / 2);
+        const endPlaceholder = generateGarbledText(byteLength);
+        garbledContent = garbledContent.trim() + '\n\n\n' + endPlaceholder;
+    }
+
+    return garbledContent;
+}
\ No newline at end of file