feat(M0): MCP 手机控制 Server 骨架——FastMCP HTTP 传输（8033），平台登录会话+CSRF 封装，de_list_devices/de_screenshot(图像块)/de_tap/de_swipe，写门控/白名单/审计，实测全链路通过

mcp_server/mcp_server.py

@@ -0,0 +1,146 @@
+"""MCP 手机控制 Server（M0：设备列表/截图/点击/滑动）。
+
+运行：MCP_ALLOW_WRITE=1 python -m mcp_server.mcp_server
+客户端：Streamable HTTP @ http://<host>:8033/mcp
+"""
+import base64
+import io
+import logging
+
+from fastmcp import FastMCP
+from PIL import Image
+
+from mcp_server import audit, config
+from mcp_server.platform_client import PlatformClient, PlatformError
+
+logging.basicConfig(level=logging.INFO,
+                    format="%(asctime)s %(levelname)s [%(name)s] %(message)s")
+_log = logging.getLogger("mcp")
+
+S = config.Settings()
+audit.init(S.audit_file)
+
+mcp = FastMCP("mobile-control")
+_platform = None
+
+
+def platform():
+    """惰性初始化平台客户端（启动即登录，失败明确报错）。"""
+    global _platform
+    if _platform is None:
+        _platform = PlatformClient(S.platform_url, S.platform_user,
+                                   S.platform_pass, S.platform_timeout)
+    return _platform
+
+
+def _check_serial(serial):
+    """白名单校验：未配置时限制为平台设备池（enabled）设备。"""
+    if not serial:
+        raise PlatformError("invalid_param", "缺少 serial")
+    if S.allowed_serials and serial not in S.allowed_serials:
+        raise PlatformError("device_not_allowed", f"设备 {serial} 不在白名单")
+    return serial
+
+
+def _check_write():
+    if not S.allow_write:
+        raise PlatformError("write_disabled", "写操作未启用（MCP_ALLOW_WRITE=1 开启）")
+
+
+def _err(e: PlatformError):
+    return {"ok": False, "error": {"code": e.code, "message": e.message}}
+
+
+def _ok(data):
+    return {"ok": True, "data": data}
+
+
+@mcp.tool()
+def de_list_devices() -> dict:
+    """列出可控制设备：serial/在线状态/型号/任务状态/前台 App。
+
+    返回 [{serial, model, online, task_job, worker_status, foreground_app}]。
+    """
+    try:
+        devs = platform().list_devices()
+    except PlatformError as e:
+        return _err(e)
+    out = []
+    for d in devs:
+        out.append({
+            "serial": d.get("serial"),
+            "model": d.get("model") or d.get("device_name") or "",
+            "online": bool(d.get("present")),
+            "task_job": d.get("task_job") or "",
+            "worker_status": d.get("worker_status") or "idle",
+            "foreground_app": d.get("foreground_app") or "",
+        })
+    audit.audit("de_list_devices", "", "", f"{len(out)} 台")
+    return _ok(out)
+
+
+@mcp.tool()
+def de_screenshot(serial: str) -> dict:
+    """截取设备屏幕并返回图像（image/jpeg，宽 ≤540px）。
+
+    同时返回 {width, height, screen_state}。多模态客户端可直接看图。
+    """
+    try:
+        serial = _check_serial(serial)
+        jpeg, screen_state = platform().screenshot(serial)
+        img = Image.open(io.BytesIO(jpeg))
+        w, h = img.size
+        if w > S.screenshot_width:
+            ratio = S.screenshot_width / w
+            img = img.resize((S.screenshot_width, int(h * ratio)))
+        buf = io.BytesIO()
+        img.convert("RGB").save(buf, "JPEG", quality=S.jpeg_quality)
+        data = base64.b64encode(buf.getvalue()).decode()
+    except PlatformError as e:
+        return _err(e)
+    except Exception as e:
+        return _err(PlatformError("platform_unavailable", f"截图处理失败: {e}"))
+    audit.audit("de_screenshot", serial, f"{w}x{h}", "ok")
+    return _ok({"image": {"type": "image", "data": data,
+                          "mimeType": "image/jpeg"},
+                "width": w, "height": h,
+                "screen_state": screen_state})
+
+
+@mcp.tool()
+def de_tap(serial: str, x: int, y: int) -> dict:
+    """点击设备屏幕指定坐标（设备原生分辨率像素，与截图 1:1 换算）。"""
+    try:
+        _check_write()
+        serial = _check_serial(serial)
+        if x < 0 or y < 0:
+            raise PlatformError("invalid_param", "坐标不能为负")
+        platform().tap(serial, x, y)
+    except PlatformError as e:
+        return _err(e)
+    audit.audit("de_tap", serial, f"({x},{y})", "ok")
+    return _ok({"action": "tap", "serial": serial, "x": x, "y": y})
+
+
+@mcp.tool()
+def de_swipe(serial: str, x1: int, y1: int, x2: int, y2: int,
+             duration: float = 0.2) -> dict:
+    """在设备屏幕上滑动（起终点为原生分辨率像素）。"""
+    try:
+        _check_write()
+        serial = _check_serial(serial)
+        platform().swipe(serial, x1, y1, x2, y2, duration)
+    except PlatformError as e:
+        return _err(e)
+    audit.audit("de_swipe", serial, f"({x1},{y1})->({x2},{y2})", "ok")
+    return _ok({"action": "swipe", "serial": serial})
+
+
+def main():
+    _log.info("MCP mobile-control 启动: allow_write=%s port=%s",
+              S.allow_write, S.http_port)
+    mcp.run(transport="http", host=S.http_host, port=S.http_port)
+
+
+if __name__ == "__main__":
+    main()