feat: 支持托管中转主机和节点接入线路

app/admin/layout.tsx

@@ -7,6 +7,7 @@ const navItems = [
   { href: "/admin/dashboard", label: "仪表盘" },
   { href: "/admin/users", label: "用户管理" },
   { href: "/admin/nodes", label: "节点管理" },
+  { href: "/admin/relays", label: "中转线路" },
   { href: "/admin/certificates", label: "证书与安装" },
   { href: "/admin/subscriptions", label: "订阅配置" },
   { href: "/admin/audits", label: "审计日志" },

app/admin/relays/actions.ts

@@ -0,0 +1,51 @@
+"use server";
+import { revalidatePath } from "next/cache";
+import { requireAdminAccess } from "@/lib/session";
+import {
+  deleteRelay,
+  RelayError,
+  saveRelayHost,
+  saveRelayRoute,
+} from "@/lib/relays";
+const value = (form: FormData, key: string) => String(form.get(key) || "");
+async function run(work: () => Promise<unknown>) {
+  await requireAdminAccess();
+  try {
+    await work();
+    revalidatePath("/admin/relays");
+    revalidatePath("/admin/subscriptions");
+  } catch (e) {
+    return {
+      error: e instanceof RelayError ? e.message : "保存失败，请检查输入。",
+    };
+  }
+}
+export async function saveHostAction(form: FormData) {
+  return run(() =>
+    saveRelayHost({
+      id: value(form, "id") || undefined,
+      name: value(form, "name"),
+      server_host: value(form, "server_host"),
+      enabled: form.get("enabled") === "on",
+    }),
+  );
+}
+export async function saveRouteAction(form: FormData) {
+  return run(() =>
+    saveRelayRoute({
+      id: value(form, "id") || undefined,
+      name: value(form, "name"),
+      host_id: value(form, "host_id"),
+      node_id: value(form, "node_id"),
+      public_port: value(form, "public_port"),
+      listen_port: value(form, "listen_port"),
+      enabled: form.get("enabled") === "on",
+    }),
+  );
+}
+export async function deleteHostAction(form: FormData) {
+  return run(() => deleteRelay("host", value(form, "id")));
+}
+export async function deleteRouteAction(form: FormData) {
+  return run(() => deleteRelay("route", value(form, "id")));
+}

app/admin/relays/page.tsx

@@ -0,0 +1,296 @@
+import Link from "next/link";
+import { ActionForm } from "@/components/action-form";
+import { Input } from "@/components/ui/input";
+import { SubmitButton } from "@/components/submit-button";
+import { buttonVariants } from "@/components/ui/button";
+import { relayDesired, relayInventory, type RelayRoute } from "@/lib/relays";
+import { ensureDb } from "@/lib/db";
+import { listNodes } from "@/lib/store";
+import { formatLocalDateTime } from "@/lib/datetime";
+import {
+  saveHostAction,
+  saveRouteAction,
+  deleteHostAction,
+  deleteRouteAction,
+} from "./actions";
+export default async function RelaysPage() {
+  const [{ hosts, routes }, nodes, db] = await Promise.all([
+    relayInventory(),
+    listNodes(),
+    ensureDb(),
+  ]);
+  const targets = nodes.filter((n) => ["hy2", "anytls"].includes(n.node_type));
+  const now = new Date().getTime();
+  const states = new Map(
+    hosts.map((h) => [
+      h.id,
+      !h.enabled
+        ? "已停用"
+        : !h.last_seen_at
+          ? "等待安装"
+          : now - Date.parse(h.last_seen_at) > 90000
+            ? "离线"
+            : h.error
+              ? h.error === "port_conflict"
+                ? "端口冲突"
+                : "应用失败"
+              : h.applied_hash !== relayDesired(db, h).hash
+                ? "等待应用"
+                : relayDesired(db, h).config.endpoints.length === 0
+                  ? "待添加线路"
+                  : h.service_active
+                    ? "配置已应用"
+                    : "服务未运行",
+    ]),
+  );
+  const routeForm = (r?: RelayRoute) => (
+    <ActionForm
+      action={saveRouteAction}
+      className="dense-form-grid provision-form"
+    >
+      {r && <input name="id" type="hidden" value={r.id} />}
+      <label className="field">
+        <span>线路名称</span>
+        <Input
+          name="name"
+          required
+          defaultValue={r?.name}
+          placeholder="JP2 - AnyTLS · 经 HK2"
+        />
+      </label>
+      <label className="field">
+        <span>中转主机</span>
+        <select
+          aria-label="中转主机"
+          name="host_id"
+          required
+          defaultValue={r?.host_id || ""}
+        >
+          <option value="" disabled>
+            选择入口主机
+          </option>
+          {hosts.map((h) => (
+            <option key={h.id} value={h.id}>
+              {h.name}
+            </option>
+          ))}
+        </select>
+      </label>
+      <label className="field">
+        <span>目标节点</span>
+        <select
+          aria-label="目标节点"
+          name="node_id"
+          required
+          defaultValue={r?.node_id || ""}
+        >
+          <option value="" disabled>
+            选择托管节点
+          </option>
+          {targets.map((n) => (
+            <option key={n.id} value={n.id}>
+              {n.name} · {n.node_type === "hy2" ? "UDP" : "TCP"}
+            </option>
+          ))}
+        </select>
+      </label>
+      <label className="field">
+        <span>公网端口</span>
+        <Input
+          name="public_port"
+          type="number"
+          min={1}
+          max={65535}
+          required
+          defaultValue={r?.public_port}
+        />
+      </label>
+      <label className="field">
+        <span>本机监听端口</span>
+        <Input
+          name="listen_port"
+          type="number"
+          min={1}
+          max={65535}
+          required
+          defaultValue={r?.listen_port}
+        />
+      </label>
+      <label className="checkbox">
+        <input
+          type="checkbox"
+          name="enabled"
+          defaultChecked={r ? Boolean(r.enabled) : true}
+        />
+        <span>启用线路</span>
+      </label>
+      <SubmitButton>{r ? "保存线路" : "创建线路"}</SubmitButton>
+    </ActionForm>
+  );
+  return (
+    <main className="page-stack management-page">
+      <section className="hero-panel">
+        <div className="hero-copy">
+          <h2>中转线路</h2>
+          <p className="muted">
+            入口主机透传 TCP / UDP，目标节点继续认证与计量，保留直连。
+          </p>
+        </div>
+        <Link
+          href="/admin/subscriptions"
+          className={buttonVariants({ variant: "outline", size: "sm" })}
+        >
+          订阅排序与分组
+        </Link>
+      </section>
+      <section className="panel-card compact-create-panel">
+        <details open={!hosts.length}>
+          <summary className="compact-create-summary">
+            <h3>新增中转主机</h3>
+          </summary>
+          <ActionForm
+            action={saveHostAction}
+            className="dense-form-grid provision-form"
+          >
+            <label className="field">
+              <span>主机名称</span>
+              <Input name="name" required placeholder="HK2" />
+            </label>
+            <label className="field">
+              <span>公网域名 / IP</span>
+              <Input
+                name="server_host"
+                required
+                placeholder="hk2.p.xn--876a.net"
+              />
+            </label>
+            <input type="hidden" name="enabled" value="on" />
+            <SubmitButton>创建主机</SubmitButton>
+          </ActionForm>
+        </details>
+      </section>
+      <section className="panel-card dense-panel">
+        <div className="section-title">
+          <h3>中转主机</h3>
+          <span>{hosts.length} 台</span>
+        </div>
+        <div className="provision-list">
+          {hosts.map((h) => (
+            <details key={h.id} className="group-disclosure">
+              <summary className="group-summary">
+                <strong>{h.name}</strong>
+                <span className="muted break-all">{h.server_host}</span>
+                <span>{states.get(h.id)}</span>
+              </summary>
+              <p className="muted">
+                最近上报：
+                {h.last_seen_at
+                  ? formatLocalDateTime(h.last_seen_at)
+                  : "尚未上报"}
+                。状态代表配置和进程，不代表大陆线路质量。
+              </p>
+              <ActionForm
+                action={saveHostAction}
+                className="dense-form-grid provision-form"
+              >
+                <input type="hidden" name="id" value={h.id} />
+                <label className="field">
+                  <span>主机名称</span>
+                  <Input name="name" defaultValue={h.name} required />
+                </label>
+                <label className="field">
+                  <span>公网域名 / IP</span>
+                  <Input
+                    name="server_host"
+                    defaultValue={h.server_host}
+                    required
+                  />
+                </label>
+                <label className="checkbox">
+                  <input
+                    type="checkbox"
+                    name="enabled"
+                    defaultChecked={Boolean(h.enabled)}
+                  />
+                  <span>启用主机</span>
+                </label>
+                <SubmitButton>保存主机</SubmitButton>
+              </ActionForm>
+              <div className="entity-action-strip">
+                <a
+                  className={buttonVariants({ variant: "outline", size: "sm" })}
+                  href={`/api/admin/relays/${h.id}/install`}
+                >
+                  下载安装 SH
+                </a>
+                <ActionForm action={deleteHostAction}>
+                  <input type="hidden" name="id" value={h.id} />
+                  <SubmitButton
+                    variant="destructive"
+                    confirm="删除该主机及其全部中转线路；管理程序收到撤销后停止中转。"
+                  >
+                    删除主机
+                  </SubmitButton>
+                </ActionForm>
+              </div>
+            </details>
+          ))}
+        </div>
+        <p className="muted">
+          以 root 在入口主机执行脚本，使用独立 Realm
+          服务。脚本含管理凭据，请妥善保管。仅开放线路所需端口；不需要额外的公网管理端口或证书。
+        </p>
+      </section>
+      <section className="panel-card compact-create-panel">
+        <details open={hosts.length > 0 && !routes.length}>
+          <summary className="compact-create-summary">
+            <h3>新增中转线路</h3>
+          </summary>
+          {routeForm()}
+        </details>
+      </section>
+      <section className="panel-card dense-panel">
+        <div className="section-title">
+          <h3>线路列表</h3>
+          <span>{routes.length} 条</span>
+        </div>
+        <p className="muted">
+          端口相同表示无 NAT 端口转换。配置约 15
+          秒同步，应用变更会中断该主机已有中转连接；服务失联超过 90
+          秒停止转发。仅配置已应用的线路进入订阅，SNI 和凭据继承目标节点。UDP
+          业务仍可通过 AnyTLS 的 TCP 隧道转发。
+        </p>
+        {routes.map((r) => {
+          const h = hosts.find((h) => h.id === r.host_id),
+            n = nodes.find((n) => n.id === r.node_id);
+          return (
+            <details key={r.id} className="group-disclosure">
+              <summary className="group-summary">
+                <strong>{r.name}</strong>
+                <span>
+                  {n?.node_type === "hy2" ? "UDP" : "TCP"} ·{" "}
+                  {r.enabled ? states.get(r.host_id) : "已停用"}
+                </span>
+              </summary>
+              <p className="muted break-all">
+                {h?.server_host}:{r.public_port} → 本机 :{r.listen_port} →{" "}
+                {n?.server_host}:{n?.server_port}
+                {!n?.enabled ? "（目标已停用）" : ""}
+              </p>
+              {routeForm(r)}
+              <ActionForm action={deleteRouteAction}>
+                <input type="hidden" name="id" value={r.id} />
+                <SubmitButton
+                  variant="destructive"
+                  confirm="删除这条中转线路，保留原目标节点与直连。"
+                >
+                  删除线路
+                </SubmitButton>
+              </ActionForm>
+            </details>
+          );
+        })}
+      </section>
+    </main>
+  );
+}