feat: add xeapi support and refactor eapi_decrypt to api_decrypt

- Added xeapi option to the API selection dropdown in api.html.
- Removed eapi_decrypt.html and created a new api_decrypt.html for unified API decryption.
- Implemented multi-crypto support in api_decrypt.html with corresponding UI changes.
- Created decrypt.js module to handle decryption logic for different crypto types including xeapi.
- Updated request.js to remove unnecessary debug logs and improve code clarity.
- Updated index.html to link to the new api_decrypt.html instead of the removed eapi_decrypt.html.

module/decrypt.js

@@ -0,0 +1,97 @@
+const {
+  eapiResDecrypt,
+  eapiReqDecrypt,
+  aesDecrypt,
+  xeapiResDecrypt,
+} = require('../util/crypto')
+const CryptoJS = require('crypto-js')
+
+const linuxapiKey = 'rFgB&h#%2?^eDg:Q'
+
+module.exports = async (query, request) => {
+  const crypto = query.crypto || 'eapi'
+  const data = query.data || query.hexString || ''
+  const isReq = query.isReq !== 'false'
+
+  if (!data) {
+    return {
+      status: 400,
+      body: { code: 400, message: 'data is required' },
+    }
+  }
+
+  try {
+    let result
+    switch (crypto) {
+      case 'eapi': {
+        const pureHex = data.replace(/\s/g, '')
+        result = isReq ? eapiReqDecrypt(pureHex) : eapiResDecrypt(pureHex)
+        break
+      }
+
+      case 'weapi': {
+        if (isReq) {
+          return {
+            status: 400,
+            body: {
+              code: 400,
+              message:
+                'weapi 请求解密需要 RSA 私钥，暂不支持；仅支持 weapi 返回数据解密（e_r=true 时与 eapi 相同）',
+            },
+          }
+        }
+        const pureHex = data.replace(/\s/g, '')
+        result = eapiResDecrypt(pureHex)
+        break
+      }
+
+      case 'linuxapi': {
+        if (isReq) {
+          const pureHex = data.replace(/\s/g, '')
+          const decrypted = aesDecrypt(pureHex, linuxapiKey, '', 'hex')
+          result = JSON.parse(decrypted.toString(CryptoJS.enc.Utf8))
+        } else {
+          result = typeof data === 'string' ? JSON.parse(data) : data
+        }
+        break
+      }
+
+      case 'xeapi': {
+        if (isReq) {
+          return {
+            status: 400,
+            body: {
+              code: 400,
+              message:
+                'xeapi 请求解密涉及 X25519 ECDH 密钥交换，流程复杂，暂不支持；仅支持 xeapi 返回数据解密',
+            },
+          }
+        }
+        const buf = Buffer.from(data, 'base64')
+        result = xeapiResDecrypt(buf)
+        break
+      }
+
+      case 'api': {
+        result = typeof data === 'string' ? JSON.parse(data) : data
+        break
+      }
+
+      default:
+        return {
+          status: 400,
+          body: { code: 400, message: `未知加密方式: ${crypto}` },
+        }
+    }
+
+    return {
+      status: 200,
+      body: { code: 200, data: result },
+    }
+  } catch (error) {
+    return {
+      status: 400,
+      body: { code: 400, message: `解密失败: ${error.message}` },
+    }
+  }
+}