552 lines
23 KiB
C#
552 lines
23 KiB
C#
using System.Security.Cryptography;
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using System.Text;
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using System.Text.Json;
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using MiGu.Server.Configs;
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using MiGu.Server.Infra;
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namespace MiGu.Server.Auth;
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/// <summary>
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/// RBAC 权威存储：用户 + 角色 + 权限页面授权，内存态 + <c>data/rbac.json</c> 文件持久化。
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///
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/// 取代旧的硬编码 <c>UserStore</c> + <c>AuthController.BuildPermissions</c>：
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/// - 登录密码校验、角色解析、有效权限（页面 / 操作 / 控件）全部由本类计算；
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/// - 管理端「权限与角色」页通过 <c>RbacController</c> 增删改用户 / 角色，落盘后即时生效；
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/// - 密码以 PBKDF2-SHA256(100k, 16B salt) 哈希存储，比较走 FixedTimeEquals 防时序攻击。
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///
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/// 首次启动（rbac.json 不存在）时 seed 两个内置账号：
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/// admin（超级管理员，scope=*，全部页面 / 操作）
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/// ops （运营人员，scope=RCSMonitor，运营四页 + 运维操作码）
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/// 初始密码取 appsettings <c>Auth:Users:{name}:Password</c>，缺省 admin/ops（开发弱口令，生产须改）。
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/// </summary>
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public sealed class RbacStore
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{
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public sealed record EffectiveResult(List<string> Pages, List<string> Ops, List<WidgetGrantDto> Widgets);
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private const string RoleAdminId = "role-admin";
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private const string RoleOpsId = "role-ops";
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private readonly object _gate = new();
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private readonly string _file;
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private readonly ILogger<RbacStore> _logger;
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private readonly JsonSerializerOptions _jsonOpts = new()
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{
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PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
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WriteIndented = true
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};
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private RbacSnapshot _snapshot = new();
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public RbacStore(IConfiguration config, IWebHostEnvironment env, ILogger<RbacStore> logger)
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{
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_logger = logger;
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var dataDir = Path.Combine(env.ContentRootPath, "data");
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Directory.CreateDirectory(dataDir);
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_file = Path.Combine(dataDir, "rbac.json");
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Load(config);
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}
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// ───────────────────────── 加载 / 持久化 ─────────────────────────
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private void Load(IConfiguration config)
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{
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if (File.Exists(_file))
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{
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try
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{
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var json = File.ReadAllText(_file);
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var snap = JsonSerializer.Deserialize<RbacSnapshot>(json, _jsonOpts);
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if (snap is { Users.Count: > 0 })
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{
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_snapshot = Normalize(snap);
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_logger.LogInformation("RBAC 从 {File} 载入：{Users} 用户 / {Roles} 角色。",
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_file, _snapshot.Users.Count, _snapshot.Roles.Count);
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return;
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}
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_logger.LogWarning("RBAC 文件 {File} 内容为空或无用户，回退到默认 seed。", _file);
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "RBAC 文件 {File} 解析失败，回退到默认 seed。", _file);
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// S2：先备份疑似损坏的 rbac.json，避免随后默认 seed 的写入把自定义用户 / 角色
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// 永久冲掉（损坏 → 静默重置成 admin/ops 弱口令是高危场景）。
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var bak = AtomicFile.BackupCorrupt(_file);
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if (bak != null)
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_logger.LogWarning("已备份疑似损坏的 RBAC 文件到 {Backup}，请人工核查后恢复自定义数据。", bak);
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}
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}
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_snapshot = SeedDefault(config);
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Persist();
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_logger.LogInformation("RBAC 已生成默认数据并写入 {File}（admin / ops）。", _file);
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}
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/// <summary>清洗加载结果：补默认、去重、过滤非法页面 Key，保证内置角色存在。</summary>
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private static RbacSnapshot Normalize(RbacSnapshot snap)
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{
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snap.Roles ??= new();
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snap.Users ??= new();
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foreach (var r in snap.Roles)
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{
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r.Pages = (r.Pages ?? new())
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.Select(p => p == PageCatalog.Wildcard ? p : PageCatalog.NormalizeKey(p))
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.Where(p => p == PageCatalog.Wildcard || PageCatalog.IsValidKey(p))
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.Distinct(StringComparer.OrdinalIgnoreCase)
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.ToList();
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r.Ops = (r.Ops ?? new()).Distinct().ToList();
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r.WidgetGrants ??= new();
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if (string.IsNullOrWhiteSpace(r.Scope)) r.Scope = PageCatalog.ScopePlatform;
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BackfillKnownPageMigrations(r);
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}
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foreach (var u in snap.Users)
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{
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u.RoleIds = (u.RoleIds ?? new()).Distinct().ToList();
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}
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return snap;
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}
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private static void BackfillKnownPageMigrations(RbacRole r)
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{
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if (!string.Equals(r.Scope, PageCatalog.ScopePlatform, StringComparison.OrdinalIgnoreCase)
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&& r.Scope != PageCatalog.Wildcard) return;
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// 任务编排页（admin-task-templates，原任务模板 / WorkflowEditor）与脚本、进程管理同属一组编排能力。
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// 旧的 admin-missions 入口已下线：上面 Normalize 会按 PageCatalog 过滤掉历史角色里的该 key。
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// 这里在角色已有进程 + 脚本入口时补齐「任务编排」菜单权限。
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var hasProcessAndScript =
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r.Pages.Contains("admin-processes", StringComparer.OrdinalIgnoreCase)
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&& r.Pages.Contains("admin-scripts", StringComparer.OrdinalIgnoreCase);
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if (!r.Pages.Contains(PageCatalog.Wildcard)
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&& !r.Pages.Contains("admin-task-templates", StringComparer.OrdinalIgnoreCase)
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&& hasProcessAndScript)
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r.Pages.Add("admin-task-templates");
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}
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private RbacSnapshot SeedDefault(IConfiguration config)
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{
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var adminPwd = config["Auth:Users:admin:Password"] ?? "admin";
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var opsPwd = config["Auth:Users:ops:Password"] ?? "ops";
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if (adminPwd == "admin" || opsPwd == "ops")
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_logger.LogWarning("RBAC seed 使用默认弱密码（admin/ops），生产环境请尽快在「权限与角色」页修改或通过环境变量覆盖。");
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var snap = new RbacSnapshot
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{
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Version = 1,
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Roles = new List<RbacRole>
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{
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new()
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{
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Id = RoleAdminId, Name = "超级管理员", Description = "拥有全部页面与操作权限的内置角色",
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Scope = PageCatalog.Wildcard,
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Pages = new() { PageCatalog.Wildcard },
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Ops = new() { "*" },
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WidgetGrants = new(),
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System = true
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},
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new()
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{
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Id = RoleOpsId, Name = "运营人员", Description = "运营监控端默认角色：可执行运维操作、查看监控",
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Scope = PageCatalog.ScopeMonitor,
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Pages = new() { "monitor-dashboard", "monitor-vehicle-hub", "monitor-map", "monitor-ops", "monitor-notes" },
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Ops = new()
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{
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"ops.car.pause", "ops.car.resume", "ops.car.gohome", "ops.car.resetSession",
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"ops.car.manualCharge", "ops.task.pause", "ops.task.cancel", "ops.task.reassign",
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"ops.task.boostPriority", "monitor.note.write"
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},
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WidgetGrants = new()
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{
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new("MapEditor", "readonly"),
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new("CadToolbar", "hidden"),
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new("CarPanel", "readonly"),
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new("MissionEditor", "readonly"),
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new("OpsActionPanel", "interactive"),
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new("ConfigCenter", "hidden")
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},
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System = true
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}
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},
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Users = new List<RbacUser>()
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};
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snap.Users.Add(NewUser("u-admin", "admin", "系统管理员", adminPwd, new() { RoleAdminId }));
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snap.Users.Add(NewUser("u-ops", "ops", "运营人员", opsPwd, new() { RoleOpsId }));
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return snap;
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}
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private void Persist()
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{
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try
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{
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AtomicFile.WriteAllText(_file, JsonSerializer.Serialize(_snapshot, _jsonOpts));
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "RBAC 持久化到 {File} 失败。", _file);
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}
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}
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// ───────────────────────── 登录 / 鉴权读取 ─────────────────────────
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/// <summary>用户名 + 密码校验。返回 null = 不存在 / 已禁用 / 密码错（不区分原因，防用户名枚举）。</summary>
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public RbacUser? VerifyCredentials(string username, string password)
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{
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if (string.IsNullOrWhiteSpace(username) || string.IsNullOrEmpty(password)) return null;
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lock (_gate)
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{
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var u = FindByName(username);
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if (u is null || !u.Enabled) return null;
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if (!VerifyHash(password, u.Salt, u.PasswordHash)) return null;
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return Clone(u);
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}
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}
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public RbacUser? FindUser(string username)
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{
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lock (_gate) { var u = FindByName(username); return u is null ? null : Clone(u); }
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}
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/// <summary>当前用户可登录的 scope 集合（其角色覆盖的 scope，<c>*</c> 角色覆盖全部）。</summary>
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public List<string> UsableScopes(RbacUser user)
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{
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lock (_gate)
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{
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var roles = RolesOf(user);
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var set = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
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foreach (var r in roles)
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{
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if (r.Scope == PageCatalog.Wildcard)
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{
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set.Add(PageCatalog.ScopePlatform);
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set.Add(PageCatalog.ScopeMonitor);
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}
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else set.Add(r.Scope);
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}
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return set.ToList();
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}
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}
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public bool CanUseScope(RbacUser user, string scope) =>
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UsableScopes(user).Contains(scope, StringComparer.OrdinalIgnoreCase);
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/// <summary>角色名（展示用，写入 AuthUserDto.Roles / JWT role claim）。</summary>
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public List<string> RoleNamesOf(RbacUser user)
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{
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lock (_gate) { return RolesOf(user).Select(r => r.Name).ToList(); }
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}
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/// <summary>
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/// 计算用户在指定 scope 下的有效权限：可访问页面、操作码、控件可见性，均取适用角色的并集。
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/// 适用角色 = 角色 scope 等于该 scope，或角色 scope 为通配 <c>*</c>。
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/// </summary>
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public EffectiveResult ComputeEffective(RbacUser user, string scope)
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{
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lock (_gate)
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{
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var roles = RolesOf(user).Where(r => r.Scope == PageCatalog.Wildcard
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|| string.Equals(r.Scope, scope, StringComparison.OrdinalIgnoreCase)).ToList();
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var scopeKeys = PageCatalog.KeysForScope(scope).ToHashSet(StringComparer.OrdinalIgnoreCase);
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var pages = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
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var ops = new HashSet<string>(StringComparer.Ordinal);
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var allOps = false;
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var bestWidget = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
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foreach (var r in roles)
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{
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if (r.Pages.Contains(PageCatalog.Wildcard)) pages.UnionWith(scopeKeys);
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else foreach (var p in r.Pages) if (scopeKeys.Contains(p)) pages.Add(p);
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foreach (var o in r.Ops)
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{
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if (o == "*") allOps = true;
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else ops.Add(o);
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}
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foreach (var g in r.WidgetGrants)
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{
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if (!bestWidget.TryGetValue(g.WidgetId, out var cur) || Rank(g.Visibility) > Rank(cur))
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bestWidget[g.WidgetId] = g.Visibility;
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}
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}
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return new EffectiveResult(
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pages.OrderBy(p => p, StringComparer.Ordinal).ToList(),
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allOps ? new List<string> { "*" } : ops.OrderBy(o => o, StringComparer.Ordinal).ToList(),
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bestWidget.Select(kv => new WidgetGrantDto(kv.Key, kv.Value)).ToList());
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}
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}
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// ───────────────────────── 管理端读取 ─────────────────────────
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public List<RbacRole> ListRoles()
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{
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lock (_gate) { return _snapshot.Roles.Select(Clone).ToList(); }
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}
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public List<RbacUserDto> ListUsers()
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{
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lock (_gate) { return _snapshot.Users.Select(ToDto).ToList(); }
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}
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// ───────────────────────── 用户 CRUD ─────────────────────────
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public RbacUserDto CreateUser(CreateUserRequest req)
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{
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if (string.IsNullOrWhiteSpace(req.Username)) throw new RbacException("用户名不能为空");
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if (string.IsNullOrEmpty(req.Password)) throw new RbacException("初始密码不能为空");
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lock (_gate)
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{
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if (FindByName(req.Username) is not null) throw new RbacException($"用户名 {req.Username} 已存在");
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var roleIds = FilterExistingRoles(req.RoleIds);
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var user = NewUser($"u-{NewId()}", req.Username.Trim(),
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string.IsNullOrWhiteSpace(req.DisplayName) ? req.Username.Trim() : req.DisplayName!.Trim(),
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req.Password, roleIds);
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user.Enabled = req.Enabled;
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_snapshot.Users.Add(user);
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Persist();
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return ToDto(user);
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}
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}
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public RbacUserDto UpdateUser(string id, UpdateUserRequest req)
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{
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lock (_gate)
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{
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var u = _snapshot.Users.FirstOrDefault(x => x.Id == id) ?? throw new RbacException("用户不存在");
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var oldName = u.DisplayName;
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var oldRoles = u.RoleIds;
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var oldEnabled = u.Enabled;
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if (req.DisplayName is not null) u.DisplayName = req.DisplayName.Trim();
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if (req.RoleIds is not null) u.RoleIds = FilterExistingRoles(req.RoleIds);
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if (req.Enabled is bool en) u.Enabled = en;
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// M5：若本次改动（改角色 / 停用）导致系统再无有效管理员，则回滚后报错。
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try { EnsureAdminRemainsNoLock(); }
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catch { u.DisplayName = oldName; u.RoleIds = oldRoles; u.Enabled = oldEnabled; throw; }
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Persist();
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return ToDto(u);
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}
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}
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public void SetPassword(string id, string password)
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{
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if (string.IsNullOrEmpty(password)) throw new RbacException("密码不能为空");
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lock (_gate)
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{
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var u = _snapshot.Users.FirstOrDefault(x => x.Id == id) ?? throw new RbacException("用户不存在");
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var salt = RandomNumberGenerator.GetBytes(16);
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u.Salt = Convert.ToBase64String(salt);
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u.PasswordHash = Convert.ToBase64String(Pbkdf2(password, salt));
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Persist();
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}
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}
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public void DeleteUser(string id)
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{
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lock (_gate)
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{
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var u = _snapshot.Users.FirstOrDefault(x => x.Id == id) ?? throw new RbacException("用户不存在");
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var idx = _snapshot.Users.IndexOf(u);
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_snapshot.Users.RemoveAt(idx);
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// M5：删除后若系统再无有效管理员，则恢复并报错。
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try { EnsureAdminRemainsNoLock(); }
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catch { _snapshot.Users.Insert(idx, u); throw; }
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Persist();
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}
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}
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// ───────────────────────── 角色 CRUD ─────────────────────────
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public RbacRole CreateRole(SaveRoleRequest req)
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{
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if (string.IsNullOrWhiteSpace(req.Name)) throw new RbacException("角色名称不能为空");
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var scope = NormalizeScope(req.Scope);
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lock (_gate)
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{
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var role = new RbacRole
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{
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Id = $"role-{NewId()}",
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Name = req.Name.Trim(),
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Description = req.Description?.Trim() ?? "",
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Scope = scope,
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Pages = SanitizePages(req.Pages),
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Ops = req.Ops?.Distinct().ToList() ?? new(),
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WidgetGrants = req.WidgetGrants ?? new(),
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System = false
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};
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_snapshot.Roles.Add(role);
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Persist();
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return Clone(role);
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}
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}
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public RbacRole UpdateRole(string id, SaveRoleRequest req)
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{
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if (string.IsNullOrWhiteSpace(req.Name)) throw new RbacException("角色名称不能为空");
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var scope = NormalizeScope(req.Scope);
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lock (_gate)
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{
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var role = _snapshot.Roles.FirstOrDefault(r => r.Id == id) ?? throw new RbacException("角色不存在");
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var backup = Clone(role);
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role.Name = req.Name.Trim();
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role.Description = req.Description?.Trim() ?? "";
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role.Scope = scope;
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role.Pages = SanitizePages(req.Pages);
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role.Ops = req.Ops?.Distinct().ToList() ?? new();
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role.WidgetGrants = req.WidgetGrants ?? new();
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// M5：若本次改动（如去掉角色的 "*"/auth.manage）导致系统再无有效管理员，则回滚。
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try { EnsureAdminRemainsNoLock(); }
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catch
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{
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role.Name = backup.Name; role.Description = backup.Description; role.Scope = backup.Scope;
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role.Pages = backup.Pages; role.Ops = backup.Ops; role.WidgetGrants = backup.WidgetGrants;
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throw;
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}
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Persist();
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return Clone(role);
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}
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}
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public void DeleteRole(string id)
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{
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lock (_gate)
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{
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var role = _snapshot.Roles.FirstOrDefault(r => r.Id == id) ?? throw new RbacException("角色不存在");
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if (role.System) throw new RbacException("内置系统角色不可删除");
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var inUse = _snapshot.Users.Where(u => u.RoleIds.Contains(id)).Select(u => u.Username).ToList();
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if (inUse.Count > 0)
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throw new RbacException($"角色仍被 {inUse.Count} 个用户使用（{string.Join(", ", inUse.Take(5))}{(inUse.Count > 5 ? "…" : "")}），请先解除关联");
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_snapshot.Roles.Remove(role);
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Persist();
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}
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}
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public bool RoleExists(string id)
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||
{
|
||
lock (_gate) { return _snapshot.Roles.Any(r => r.Id == id); }
|
||
}
|
||
|
||
// ───────────────────────── 内部工具 ─────────────────────────
|
||
|
||
private RbacUser? FindByName(string username) =>
|
||
_snapshot.Users.FirstOrDefault(u => string.Equals(u.Username, username, StringComparison.OrdinalIgnoreCase));
|
||
|
||
private List<RbacRole> RolesOf(RbacUser user) =>
|
||
user.RoleIds.Select(id => _snapshot.Roles.FirstOrDefault(r => r.Id == id))
|
||
.Where(r => r is not null).Select(r => r!).ToList();
|
||
|
||
private const string OpAuthManage = "auth.manage";
|
||
|
||
/// <summary>
|
||
/// 该用户当前是否为「有效系统管理员」：启用 且 至少一个角色的 Ops 含 "*" 或 "auth.manage"。
|
||
/// 用于 M5「最后管理员」保护。
|
||
/// </summary>
|
||
private bool IsActiveAdminNoLock(RbacUser u)
|
||
{
|
||
if (!u.Enabled) return false;
|
||
foreach (var r in RolesOf(u))
|
||
if (r.Ops.Contains("*") || r.Ops.Contains(OpAuthManage)) return true;
|
||
return false;
|
||
}
|
||
|
||
private int CountActiveAdminsNoLock() => _snapshot.Users.Count(IsActiveAdminNoLock);
|
||
|
||
/// <summary>校验修改应用后系统仍至少有一名有效管理员，否则抛异常（调用方负责回滚内存改动）。</summary>
|
||
private void EnsureAdminRemainsNoLock()
|
||
{
|
||
if (CountActiveAdminsNoLock() == 0)
|
||
throw new RbacException("该操作会使系统再无任何具备管理权限（auth.manage）的启用账号，已阻止。请至少保留一名超级管理员。");
|
||
}
|
||
|
||
private List<string> FilterExistingRoles(List<string>? roleIds) =>
|
||
(roleIds ?? new()).Where(id => _snapshot.Roles.Any(r => r.Id == id)).Distinct().ToList();
|
||
|
||
private static List<string> SanitizePages(List<string>? pages)
|
||
{
|
||
if (pages is null) return new();
|
||
if (pages.Contains(PageCatalog.Wildcard)) return new() { PageCatalog.Wildcard };
|
||
return pages.Where(PageCatalog.IsValidKey).Distinct().ToList();
|
||
}
|
||
|
||
private static string NormalizeScope(string? scope) => scope switch
|
||
{
|
||
PageCatalog.ScopePlatform => PageCatalog.ScopePlatform,
|
||
PageCatalog.ScopeMonitor => PageCatalog.ScopeMonitor,
|
||
PageCatalog.Wildcard => PageCatalog.Wildcard,
|
||
_ => throw new RbacException($"无效 scope: {scope}（应为 Platform / RCSMonitor / *）")
|
||
};
|
||
|
||
private static int Rank(string visibility) => visibility switch
|
||
{
|
||
"interactive" => 2,
|
||
"readonly" => 1,
|
||
_ => 0
|
||
};
|
||
|
||
private static RbacUser NewUser(string id, string username, string displayName, string password, List<string> roleIds)
|
||
{
|
||
var salt = RandomNumberGenerator.GetBytes(16);
|
||
return new RbacUser
|
||
{
|
||
Id = id,
|
||
Username = username,
|
||
DisplayName = displayName,
|
||
Enabled = true,
|
||
RoleIds = roleIds,
|
||
Salt = Convert.ToBase64String(salt),
|
||
PasswordHash = Convert.ToBase64String(Pbkdf2(password, salt))
|
||
};
|
||
}
|
||
|
||
private RbacUserDto ToDto(RbacUser u) =>
|
||
new(u.Id, u.Username, u.DisplayName, u.Enabled, new List<string>(u.RoleIds), UsableScopesNoLock(u));
|
||
|
||
private List<string> UsableScopesNoLock(RbacUser user)
|
||
{
|
||
var set = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
|
||
foreach (var r in RolesOf(user))
|
||
{
|
||
if (r.Scope == PageCatalog.Wildcard) { set.Add(PageCatalog.ScopePlatform); set.Add(PageCatalog.ScopeMonitor); }
|
||
else set.Add(r.Scope);
|
||
}
|
||
return set.ToList();
|
||
}
|
||
|
||
private static bool VerifyHash(string password, string saltB64, string hashB64)
|
||
{
|
||
try
|
||
{
|
||
var salt = Convert.FromBase64String(saltB64);
|
||
var expected = Convert.FromBase64String(hashB64);
|
||
var actual = Pbkdf2(password, salt);
|
||
return CryptographicOperations.FixedTimeEquals(actual, expected);
|
||
}
|
||
catch { return false; }
|
||
}
|
||
|
||
private static byte[] Pbkdf2(string password, byte[] salt) =>
|
||
Rfc2898DeriveBytes.Pbkdf2(Encoding.UTF8.GetBytes(password), salt, iterations: 100_000, HashAlgorithmName.SHA256, 32);
|
||
|
||
private static string NewId() => Guid.NewGuid().ToString("N")[..8];
|
||
|
||
private static RbacUser Clone(RbacUser u) => new()
|
||
{
|
||
Id = u.Id, Username = u.Username, DisplayName = u.DisplayName, Enabled = u.Enabled,
|
||
RoleIds = new List<string>(u.RoleIds), Salt = u.Salt, PasswordHash = u.PasswordHash
|
||
};
|
||
|
||
private static RbacRole Clone(RbacRole r) => new()
|
||
{
|
||
Id = r.Id, Name = r.Name, Description = r.Description, Scope = r.Scope,
|
||
Pages = new List<string>(r.Pages), Ops = new List<string>(r.Ops),
|
||
WidgetGrants = r.WidgetGrants.Select(w => new WidgetGrantDto(w.WidgetId, w.Visibility)).ToList(),
|
||
System = r.System
|
||
};
|
||
}
|
||
|
||
/// <summary>RBAC 业务校验异常 —— 由 <c>RbacController</c> 统一翻译成 400 + message。</summary>
|
||
public sealed class RbacException : Exception
|
||
{
|
||
public RbacException(string message) : base(message) { }
|
||
}
|