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2026-10-19 07:10:44 +00:00 · 2026-10-06 19:01:05 +08:00
commit b705216e4a
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+# -*- coding: utf-8 -*-
+"""真正解析一遍生成的 JS，确认没有跨行字符串。
+
+上次的"复核"是简单的数引号，不准。
+这次写个正经的扫描器：按字符走，处理转义、注释、模板串。
+
+顺便：如果有 node，直接用 node --check 验证语法（最权威）。
+"""
+from __future__ import annotations
+
+import os
+import shutil
+import subprocess
+import sys
+import tempfile
+import time
+import urllib.error
+import urllib.request
+import http.cookiejar
+import urllib.parse
+import json
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parent.parent
+UA = {"User-Agent": "LanRemote/1.4.0"}
+PORT = 8099
+BASE = f"http://127.0.0.1:{PORT}"
+
+
+def scan_js_literals(script: str) -> list:
+    """扫出跨行的字符串字面量，返回 [(行号, 片段)]。"""
+    problems = []
+    i = 0
+    n = len(script)
+    line = 1
+    while i < n:
+        ch = script[i]
+        if ch == "\n":
+            line += 1
+            i += 1
+            continue
+        # 行注释
+        if ch == "/" and i + 1 < n and script[i + 1] == "/":
+            while i < n and script[i] != "\n":
+                i += 1
+            continue
+        # 块注释
+        if ch == "/" and i + 1 < n and script[i + 1] == "*":
+            i += 2
+            while i + 1 < n and not (script[i] == "*" and script[i + 1] == "/"):
+                if script[i] == "\n":
+                    line += 1
+                i += 1
+            i += 2
+            continue
+        # 字符串
+        if ch in ("'", '"', "`"):
+            quote = ch
+            start_line = line
+            start_i = i
+            i += 1
+            closed = False
+            while i < n:
+                c = script[i]
+                if c == "\\":
+                    i += 2
+                    continue
+                if c == "\n":
+                    if quote == "`":
+                        line += 1
+                        i += 1
+                        continue
+                    break
+                if c == quote:
+                    closed = True
+                    i += 1
+                    break
+                i += 1
+            if not closed:
+                snippet = script[start_i:start_i + 60].replace("\n", "\\n")
+                problems.append((start_line, snippet))
+            continue
+        i += 1
+    return problems
+
+
+def main() -> int:
+    work = Path(tempfile.mkdtemp(prefix="jscheck_"))
+    relay = None
+    try:
+        data = work / "d"
+        data.mkdir(parents=True, exist_ok=True)
+        env = dict(os.environ)
+        env.update({"RELAY_PORT": str(PORT), "RELAY_BIND": "127.0.0.1",
+                    "RELAY_DATA": str(data),
+                    "PYTHONIOENCODING": "utf-8", "PYTHONUNBUFFERED": "1"})
+        relay = subprocess.Popen(
+            [sys.executable, "-u", str(ROOT / "relay" / "relay.py")], env=env,
+            stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+        for _ in range(40):
+            time.sleep(0.5)
+            try:
+                urllib.request.urlopen(
+                    urllib.request.Request(BASE + "/v1/health", headers=UA),
+                    timeout=2)
+                break
+            except Exception:                             # noqa: BLE001
+                continue
+
+        body = json.dumps({"deviceId": "pc-js", "code": "333444",
+                           "name": "测试电脑", "version": "1.4.0"}).encode()
+        urllib.request.urlopen(urllib.request.Request(
+            BASE + "/v1/agent/register", data=body, method="POST",
+            headers={**UA, "Content-Type": "application/json"}), timeout=10
+        ).read()
+
+        jar = http.cookiejar.CookieJar()
+        opener = urllib.request.build_opener(
+            urllib.request.HTTPCookieProcessor(jar))
+        form = urllib.parse.urlencode({"password": "120830"}).encode()
+        req = urllib.request.Request(BASE + "/admin/login", data=form,
+                                     method="POST", headers=UA)
+        req.add_header("Content-Type", "application/x-www-form-urlencoded")
+        try:
+            opener.open(req, timeout=10).read()
+        except urllib.error.HTTPError:
+            pass
+
+        html = opener.open(urllib.request.Request(BASE + "/", headers=UA),
+                           timeout=10).read().decode("utf-8")
+
+        start = html.find("<script>")
+        end = html.find("</script>", start)
+        if start < 0:
+            print("  [FAIL] 页面里没有 script")
+            return 1
+        script = html[start + len("<script>"):end]
+        print(f"  JS 长度 {len(script)} 字符，{len(script.splitlines())} 行")
+
+        bad = scan_js_literals(script)
+        if bad:
+            print(f"  [FAIL] 有 {len(bad)} 处跨行字符串字面量：")
+            for line, snippet in bad:
+                print(f"      第 {line} 行: {snippet}")
+        else:
+            print("  ✓ 没有跨行字符串字面量")
+
+        # 有 node 的话用它做权威校验
+        node = shutil.which("node")
+        if node:
+            jsfile = work / "check.js"
+            jsfile.write_text(script, encoding="utf-8")
+            proc = subprocess.run([node, "--check", str(jsfile)],
+                                  capture_output=True, text=True,
+                                  encoding="utf-8", errors="replace")
+            if proc.returncode == 0:
+                print("  ✓ node --check 语法通过")
+            else:
+                print(f"  [FAIL] node --check 报错：{proc.stderr[:300]}")
+                bad.append((-1, "node"))
+        else:
+            print("  （本机没有 node，跳过 --check）")
+
+        print()
+        if bad:
+            print("  结论：JS 有语法错误 —— 按钮点了没反应就是这个原因")
+            return 1
+        print("  结论：JS 合法，删除按钮能正常工作")
+        return 0
+    finally:
+        if relay is not None:
+            try:
+                relay.terminate()
+                relay.wait(timeout=8)
+            except Exception:                             # noqa: BLE001
+                try:
+                    relay.kill()
+                except Exception:                     # noqa: BLE001
+                    pass
+        time.sleep(0.5)
+        shutil.rmtree(work, ignore_errors=True)
+
+
+if __name__ == "__main__":
+    sys.exit(main())