feat: recalculate permission scope & permission matrix UI (#6612)

packages/api/src/router/app.ts

@@ -18,7 +18,8 @@ import { AppAccessControl } from "./app/app-access-control";
 const defaultIcon = "https://cdn.jsdelivr.net/gh/homarr-labs/dashboard-icons@master/svg/homarr.svg";
 
 export const appRouter = createTRPCRouter({
-  getPaginated: protectedProcedure
+  getPaginated: permissionRequiredProcedure
+    .requiresPermission("app-modify-all")
     .meta({
       openapi: {
         method: "GET",
@@ -50,7 +51,8 @@ export const appRouter = createTRPCRouter({
         totalCount,
       };
     }),
-  all: protectedProcedure
+  all: permissionRequiredProcedure
+    .requiresPermission("app-modify-all")
     .input(z.void())
     .output(z.array(selectAppSchema))
     .meta({
@@ -88,6 +90,16 @@ export const appRouter = createTRPCRouter({
       },
     })
     .query(({ ctx, input }) => {
+      if (
+        !ctx.session.user.permissions.includes("app-modify-all") &&
+        !ctx.session.user.permissions.includes("board-modify-all")
+      ) {
+        throw new TRPCError({
+          code: "FORBIDDEN",
+          message: "Permission denied",
+        });
+      }
+
       return ctx.db.query.apps.findMany({
         where: like(apps.name, `%${input.query}%`),
         orderBy: asc(apps.name),

packages/api/src/router/group.ts

@@ -302,16 +302,43 @@ export const groupRouter = createTRPCRouter({
     .mutation(async ({ input, ctx }) => {
       await throwIfGroupNotFoundAsync(ctx.db, input.groupId);
 
-      await ctx.db.delete(groupPermissions).where(eq(groupPermissions.groupId, input.groupId));
+      // Stored exactly as selected - implied permissions are resolved at read time through
+      // getPermissionsWithChildren, so nothing is silently escalated here.
+      const permissions = [...new Set(input.permissions)];
 
-      if (input.permissions.length > 0) {
-        await ctx.db.insert(groupPermissions).values(
-          input.permissions.map((permission) => ({
-            groupId: input.groupId,
-            permission,
-          })),
-        );
-      }
+      await handleTransactionsAsync(ctx.db, {
+        async handleAsync(db, schema) {
+          await db.transaction(async (transaction) => {
+            await transaction.delete(schema.groupPermissions).where(eq(schema.groupPermissions.groupId, input.groupId));
+            if (permissions.length === 0) {
+              return;
+            }
+            await transaction.insert(schema.groupPermissions).values(
+              permissions.map((permission) => ({
+                groupId: input.groupId,
+                permission,
+              })),
+            );
+          });
+        },
+        handleSync(db) {
+          db.transaction((transaction) => {
+            transaction.delete(groupPermissions).where(eq(groupPermissions.groupId, input.groupId)).run();
+            if (permissions.length === 0) {
+              return;
+            }
+            transaction
+              .insert(groupPermissions)
+              .values(
+                permissions.map((permission) => ({
+                  groupId: input.groupId,
+                  permission,
+                })),
+              )
+              .run();
+          });
+        },
+      });
     }),
   transferOwnership: permissionRequiredProcedure
     .requiresPermission("admin")

packages/api/src/router/home.ts

@@ -1,4 +1,6 @@
 import { isProviderEnabled } from "@homarr/auth/server";
+import { constructIntegrationPermissions } from "@homarr/auth/shared";
+import type { Database } from "@homarr/db";
 import { db, eq, inArray, or } from "@homarr/db";
 import {
   apps,
@@ -6,16 +8,46 @@ import {
   boardUserPermissions,
   groupMembers,
   groups,
+  integrationGroupPermissions,
+  integrationUserPermissions,
   integrations,
   invites,
   medias,
   searchEngines,
   users,
 } from "@homarr/db/schema";
+import { getAppManagementAccess, getIntegrationManagementAccess } from "@homarr/definitions";
 import type { TranslationObject } from "@homarr/translation";
 
 import { createTRPCRouter, publicProcedure } from "../trpc";
 
+const getFullAccessIntegrationIdsAsync = async (db: Database, userId: string) => {
+  const groupsOfCurrentUser = await db.query.groupMembers.findMany({
+    where: eq(groupMembers.userId, userId),
+  });
+
+  const accessibleIntegrations = await db.query.integrations.findMany({
+    columns: {
+      id: true,
+    },
+    with: {
+      userPermissions: {
+        where: eq(integrationUserPermissions.userId, userId),
+      },
+      groupPermissions: {
+        where: inArray(
+          integrationGroupPermissions.groupId,
+          groupsOfCurrentUser.map((group) => group.groupId),
+        ),
+      },
+    },
+  });
+
+  return accessibleIntegrations
+    .filter((integration) => constructIntegrationPermissions(integration, null).hasFullAccess)
+    .map((integration) => integration.id);
+};
+
 interface HomeStatistic {
   titleKey: keyof TranslationObject["management"]["page"]["home"]["statistic"];
   subtitleKey: keyof TranslationObject["management"]["page"]["home"]["statisticLabel"];
@@ -92,20 +124,30 @@ export const homeRouter = createTRPCRouter({
       });
     }
 
-    if (ctx.session?.user.permissions.includes("integration-create")) {
+    // A card is only shown when the page behind it is reachable, and it counts only what the user is
+    // allowed to see. The rules come from @homarr/definitions so this cannot drift from the pages.
+    const permissions = ctx.session?.user.permissions ?? [];
+    const hasGlobalFullIntegrationAccess = permissions.includes("integration-full-all");
+    const fullAccessIntegrationIds =
+      hasGlobalFullIntegrationAccess || !ctx.session?.user
+        ? []
+        : await getFullAccessIntegrationIdsAsync(ctx.db, ctx.session.user.id);
+    const integrationAccess = getIntegrationManagementAccess(permissions, fullAccessIntegrationIds.length > 0);
+    if (integrationAccess.canAccess) {
       statistics.push({
         titleKey: "integration",
         subtitleKey: "resources",
-        count: await db.$count(integrations),
+        count: integrationAccess.canManageAll ? await db.$count(integrations) : fullAccessIntegrationIds.length,
         path: "/manage/integrations",
       });
     }
 
-    if (ctx.session?.user.permissions.includes("app-create")) {
+    const appAccess = getAppManagementAccess(permissions);
+    if (appAccess.canAccess) {
       statistics.push({
         titleKey: "app",
         subtitleKey: "resources",
-        count: await db.$count(apps),
+        count: appAccess.canManageAll ? await db.$count(apps) : 0,
         path: "/manage/apps",
       });
     }

packages/api/src/router/integration/integration-router.ts

@@ -1,12 +1,13 @@
 import { TRPCError } from "@trpc/server";
 import { z } from "zod/v4";
 
+import type { Session } from "@homarr/auth";
 import { hasQueryAccessToIntegrationsAsync } from "@homarr/auth/server";
 import { constructIntegrationPermissions } from "@homarr/auth/shared";
 import { createId, objectEntries } from "@homarr/common";
 import { decryptSecret, encryptSecret } from "@homarr/common/server";
 import { createLogger } from "@homarr/core/infrastructure/logs";
-import type { Database } from "@homarr/db";
+import type { Database, SQL } from "@homarr/db";
 import { and, asc, eq, handleTransactionsAsync, inArray, like, or } from "@homarr/db";
 import {
   apps,
@@ -17,7 +18,7 @@ import {
   integrationSecrets,
   integrationUserPermissions,
 } from "@homarr/db/schema";
-import type { IntegrationSecretKind } from "@homarr/definitions";
+import type { GroupPermissionKey, IntegrationPermission, IntegrationSecretKind } from "@homarr/definitions";
 import {
   getIntegrationKindsByCategory,
   getPermissionsWithParents,
@@ -71,80 +72,18 @@ export const integrationRouter = createTRPCRouter({
       },
     })
     .query(async ({ ctx }) => {
-      const groupsOfCurrentUser = await ctx.db.query.groupMembers.findMany({
-        where: eq(groupMembers.userId, ctx.session.user.id),
-      });
-
-      const integrations = await ctx.db.query.integrations.findMany({
-        with: {
-          userPermissions: {
-            where: eq(integrationUserPermissions.userId, ctx.session.user.id),
-          },
-          groupPermissions: {
-            where: inArray(
-              integrationGroupPermissions.groupId,
-              groupsOfCurrentUser.map((group) => group.groupId),
-            ),
-          },
-        },
-      });
-      return integrations
-        .map((integration) => {
-          const permissions = constructIntegrationPermissions(integration, ctx.session);
-
-          return {
-            id: integration.id,
-            name: integration.name,
-            kind: integration.kind,
-            url: integration.url,
-            permissions,
-          };
-        })
-        .toSorted(
-          (integrationA, integrationB) =>
-            integrationKinds.indexOf(integrationA.kind) - integrationKinds.indexOf(integrationB.kind),
-        );
+      return await getAccessibleIntegrationsAsync(ctx);
     }),
   allThatSupportSearch: protectedProcedure.query(async ({ ctx }) => {
-    const groupsOfCurrentUser = await ctx.db.query.groupMembers.findMany({
-      where: eq(groupMembers.userId, ctx.session.user.id),
-    });
-
-    const integrationsFromDb = await ctx.db.query.integrations.findMany({
-      with: {
-        userPermissions: {
-          where: eq(integrationUserPermissions.userId, ctx.session.user.id),
-        },
-        groupPermissions: {
-          where: inArray(
-            integrationGroupPermissions.groupId,
-            groupsOfCurrentUser.map((group) => group.groupId),
-          ),
-        },
-      },
-      where: inArray(
+    return await getAccessibleIntegrationsAsync(
+      ctx,
+      inArray(
         integrations.kind,
         objectEntries(integrationDefs)
           .filter(([_, integration]) => [...integration.category].includes("search"))
           .map(([kind, _]) => kind),
       ),
-    });
-    return integrationsFromDb
-      .map((integration) => {
-        const permissions = constructIntegrationPermissions(integration, ctx.session);
-
-        return {
-          id: integration.id,
-          name: integration.name,
-          kind: integration.kind,
-          url: integration.url,
-          permissions,
-        };
-      })
-      .toSorted(
-        (integrationA, integrationB) =>
-          integrationKinds.indexOf(integrationA.kind) - integrationKinds.indexOf(integrationB.kind),
-      );
+    );
   }),
   allOfGivenCategory: protectedProcedure
     .input(
@@ -153,42 +92,10 @@ export const integrationRouter = createTRPCRouter({
       }),
     )
     .query(async ({ ctx, input }) => {
-      const groupsOfCurrentUser = await ctx.db.query.groupMembers.findMany({
-        where: eq(groupMembers.userId, ctx.session.user.id),
-      });
-
-      const intergrationKinds = getIntegrationKindsByCategory(input.category);
-
-      const integrationsFromDb = await ctx.db.query.integrations.findMany({
-        with: {
-          userPermissions: {
-            where: eq(integrationUserPermissions.userId, ctx.session.user.id),
-          },
-          groupPermissions: {
-            where: inArray(
-              integrationGroupPermissions.groupId,
-              groupsOfCurrentUser.map((group) => group.groupId),
-            ),
-          },
-        },
-        where: inArray(integrations.kind, intergrationKinds),
-      });
-      return integrationsFromDb
-        .map((integration) => {
-          const permissions = constructIntegrationPermissions(integration, ctx.session);
-
-          return {
-            id: integration.id,
-            name: integration.name,
-            kind: integration.kind,
-            url: integration.url,
-            permissions,
-          };
-        })
-        .toSorted(
-          (integrationA, integrationB) =>
-            integrationKinds.indexOf(integrationA.kind) - integrationKinds.indexOf(integrationB.kind),
-        );
+      return await getAccessibleIntegrationsAsync(
+        ctx,
+        inArray(integrations.kind, getIntegrationKindsByCategory(input.category)),
+      );
     }),
   search: protectedProcedure
     .meta({
@@ -205,11 +112,29 @@ export const integrationRouter = createTRPCRouter({
       }),
     )
     .query(async ({ ctx, input }) => {
-      return await ctx.db.query.integrations.findMany({
+      const groupsOfCurrentUser = await ctx.db.query.groupMembers.findMany({
+        where: eq(groupMembers.userId, ctx.session.user.id),
+      });
+
+      const integrationsFromDb = await ctx.db.query.integrations.findMany({
         where: like(integrations.name, `%${input.query}%`),
         orderBy: asc(integrations.name),
-        limit: input.limit,
+        with: getIntegrationAccessRelationsAsync(
+          ctx.session.user.id,
+          groupsOfCurrentUser.map((group) => group.groupId),
+        ),
       });
+
+      return integrationsFromDb
+        .filter((integration) => hasIntegrationQueryAccess(ctx.session, integration))
+        .toSorted(
+          (integrationA, integrationB) =>
+            integrationA.name.localeCompare(integrationB.name) || integrationA.id.localeCompare(integrationB.id),
+        )
+        .slice(0, input.limit)
+        .map(
+          ({ userPermissions: _userPermissions, groupPermissions: _groupPermissions, ...integration }) => integration,
+        );
     }),
   // This is used to get the integrations by their ids it's public because it's needed to get integrations data in the boards
   byIds: publicProcedure.input(z.array(z.string())).query(async ({ ctx, input }) => {
@@ -774,6 +699,66 @@ export const integrationRouter = createTRPCRouter({
     }),
 });
 
+const globalIntegrationPermissions = [
+  "integration-use-all",
+  "integration-interact-all",
+  "integration-full-all",
+] satisfies GroupPermissionKey[];
+
+const hasGlobalIntegrationAccess = (session: Session | null) =>
+  globalIntegrationPermissions.some((permission) => session?.user.permissions.includes(permission) ?? false);
+
+const hasIntegrationQueryAccess = (
+  session: Session | null,
+  integration: {
+    userPermissions: { permission: IntegrationPermission }[];
+    groupPermissions: { permission: IntegrationPermission }[];
+  },
+) => hasGlobalIntegrationAccess(session) || constructIntegrationPermissions(integration, session).hasUseAccess;
+
+const getIntegrationAccessRelationsAsync = (userId: string, groupIds: string[]) => ({
+  userPermissions: {
+    where: eq(integrationUserPermissions.userId, userId),
+  },
+  groupPermissions: {
+    where: inArray(integrationGroupPermissions.groupId, groupIds),
+  },
+});
+
+const getAccessibleIntegrationsAsync = async (ctx: { db: Database; session: Session }, where?: SQL) => {
+  const groupsOfCurrentUser = await ctx.db.query.groupMembers.findMany({
+    where: eq(groupMembers.userId, ctx.session.user.id),
+  });
+
+  const integrationsFromDb = await ctx.db.query.integrations.findMany({
+    where,
+    with: getIntegrationAccessRelationsAsync(
+      ctx.session.user.id,
+      groupsOfCurrentUser.map((group) => group.groupId),
+    ),
+  });
+
+  return integrationsFromDb
+    .filter((integration) => hasIntegrationQueryAccess(ctx.session, integration))
+    .map((integration) => {
+      const permissions = constructIntegrationPermissions(integration, ctx.session);
+
+      return {
+        id: integration.id,
+        name: integration.name,
+        kind: integration.kind,
+        url: integration.url,
+        permissions,
+      };
+    })
+    .toSorted(
+      (integrationA, integrationB) =>
+        integrationKinds.indexOf(integrationA.kind) - integrationKinds.indexOf(integrationB.kind) ||
+        integrationA.name.localeCompare(integrationB.name) ||
+        integrationA.id.localeCompare(integrationB.id),
+    );
+};
+
 interface IntegrationRouterContext {
   db: Database;
   session: Parameters<typeof hasQueryAccessToIntegrationsAsync>[2];

packages/api/src/router/test/app.spec.ts

@@ -33,7 +33,7 @@ describe("all should return all apps", () => {
     const caller = appRouter.createCaller({
       db,
       deviceType: undefined,
-      session: createDefaultSession(),
+      session: createDefaultSession(["app-modify-all"]),
     });
 
     await db.insert(apps).values([
@@ -74,6 +74,20 @@ describe("all should return all apps", () => {
     // Assert
     await expect(actAsync()).rejects.toThrow("UNAUTHORIZED");
   });
+  test("should throw FORBIDDEN without app-modify-all permission", async () => {
+    // Arrange
+    const caller = appRouter.createCaller({
+      db: createDb(),
+      deviceType: undefined,
+      session: createDefaultSession(),
+    });
+
+    // Act
+    const actAsync = async () => await caller.all();
+
+    // Assert
+    await expect(actAsync()).rejects.toThrow("Permission denied");
+  });
 });
 
 describe("getPaginated should return apps to authenticated users", () => {
@@ -87,12 +101,12 @@ describe("getPaginated should return apps to authenticated users", () => {
     await expect(caller.getPaginated({ page: 1, pageSize: 10 })).rejects.toThrow("UNAUTHORIZED");
   });
 
-  test("should return apps without board permissions", async () => {
+  test("should return apps with app-modify-all permission", async () => {
     const db = createDb();
     const caller = appRouter.createCaller({
       db,
       deviceType: undefined,
-      session: createDefaultSession(),
+      session: createDefaultSession(["app-modify-all"]),
     });
     await db.insert(apps).values({ id: "1", name: "Homarr", iconUrl: "https://homarr.dev/icon.svg" });
 
@@ -101,6 +115,43 @@ describe("getPaginated should return apps to authenticated users", () => {
       items: [{ id: "1" }],
     });
   });
+
+  test("should throw FORBIDDEN without app-modify-all permission", async () => {
+    const caller = appRouter.createCaller({
+      db: createDb(),
+      deviceType: undefined,
+      session: createDefaultSession(),
+    });
+
+    await expect(caller.getPaginated({ page: 1, pageSize: 10 })).rejects.toThrow("Permission denied");
+  });
+});
+
+describe("search should require app-modify-all or board-modify-all permission", () => {
+  test("should throw FORBIDDEN without app-modify-all or board-modify-all permission", async () => {
+    const caller = appRouter.createCaller({
+      db: createDb(),
+      deviceType: undefined,
+      session: createDefaultSession(),
+    });
+
+    await expect(caller.search({ query: "Homarr" })).rejects.toThrow("Permission denied");
+  });
+
+  test("should return apps with board-modify-all permission", async () => {
+    const db = createDb();
+    const caller = appRouter.createCaller({
+      db,
+      deviceType: undefined,
+      session: createDefaultSession(["board-modify-all"]),
+    });
+    await db.insert(apps).values({ id: "1", name: "Homarr", iconUrl: "https://homarr.dev/icon.svg" });
+
+    const result = await caller.search({ query: "Homarr" });
+
+    expect(result).toHaveLength(1);
+    expect(result[0]!.id).toBe("1");
+  });
 });
 
 describe("byId should return an app by id", () => {

packages/api/src/router/test/group.spec.ts

@@ -449,6 +449,165 @@ describe("savePermissions should save permissions for group", () => {
     expect(permissions.map(({ permission }) => permission)).toEqual(["integration-use-all", "board-full-all"]);
   });
 
+  test("with a standalone create permission it should not escalate to its parent permission", async () => {
+    // Arrange
+    const db = createDb();
+    const caller = groupRouter.createCaller({ db, deviceType: undefined, session: adminSession });
+
+    const groupId = createId();
+    await db.insert(groups).values({
+      id: groupId,
+      name: "Group",
+      position: 1,
+    });
+
+    // Act
+    await caller.savePermissions({
+      groupId,
+      permissions: ["board-create"],
+    });
+
+    // Assert
+    const permissions = await db.query.groupPermissions.findMany({
+      where: eq(groupPermissions.groupId, groupId),
+    });
+
+    expect(permissions.map(({ permission }) => permission)).toEqual(["board-create"]);
+  });
+
+  test.each([["app-create"], ["integration-create"], ["search-engine-create"], ["media-upload"]] as const)(
+    "with %s alone it should persist exactly that permission",
+    async (permission) => {
+      // Arrange
+      const db = createDb();
+      const caller = groupRouter.createCaller({ db, deviceType: undefined, session: adminSession });
+
+      const groupId = createId();
+      await db.insert(groups).values({
+        id: groupId,
+        name: "Group",
+        position: 1,
+      });
+
+      // Act
+      await caller.savePermissions({ groupId, permissions: [permission] });
+
+      // Assert
+      const permissions = await db.query.groupPermissions.findMany({
+        where: eq(groupPermissions.groupId, groupId),
+      });
+
+      expect(permissions.map(({ permission: key }) => key)).toEqual([permission]);
+    },
+  );
+
+  test("with a create permission and its parent it should persist exactly two rows", async () => {
+    // Arrange
+    const db = createDb();
+    const caller = groupRouter.createCaller({ db, deviceType: undefined, session: adminSession });
+
+    const groupId = createId();
+    await db.insert(groups).values({
+      id: groupId,
+      name: "Group",
+      position: 1,
+    });
+
+    // Act
+    await caller.savePermissions({
+      groupId,
+      permissions: ["app-create", "app-modify-all"],
+    });
+
+    // Assert
+    const permissions = await db.query.groupPermissions.findMany({
+      where: eq(groupPermissions.groupId, groupId),
+    });
+
+    expect(permissions.length).toBe(2);
+    expect(permissions.map(({ permission }) => permission).toSorted()).toEqual(["app-create", "app-modify-all"]);
+  });
+
+  test("with duplicate permissions it should persist each permission only once", async () => {
+    // Arrange
+    const db = createDb();
+    const caller = groupRouter.createCaller({ db, deviceType: undefined, session: adminSession });
+
+    const groupId = createId();
+    await db.insert(groups).values({
+      id: groupId,
+      name: "Group",
+      position: 1,
+    });
+
+    // Act
+    await caller.savePermissions({
+      groupId,
+      permissions: ["board-view-all", "board-view-all", "board-modify-all"],
+    });
+
+    // Assert
+    const permissions = await db.query.groupPermissions.findMany({
+      where: eq(groupPermissions.groupId, groupId),
+    });
+
+    expect(permissions.map(({ permission }) => permission).toSorted()).toEqual(["board-modify-all", "board-view-all"]);
+  });
+
+  test("saving the same permissions twice should be idempotent", async () => {
+    // Arrange
+    const db = createDb();
+    const caller = groupRouter.createCaller({ db, deviceType: undefined, session: adminSession });
+
+    const groupId = createId();
+    await db.insert(groups).values({
+      id: groupId,
+      name: "Group",
+      position: 1,
+    });
+
+    // Act
+    await caller.savePermissions({ groupId, permissions: ["board-create", "media-upload"] });
+    await caller.savePermissions({ groupId, permissions: ["board-create", "media-upload"] });
+
+    // Assert
+    const permissions = await db.query.groupPermissions.findMany({
+      where: eq(groupPermissions.groupId, groupId),
+    });
+
+    expect(permissions.map(({ permission }) => permission).toSorted()).toEqual(["board-create", "media-upload"]);
+  });
+
+  test("with an empty permission list it should clear all existing permissions", async () => {
+    // Arrange
+    const db = createDb();
+    const caller = groupRouter.createCaller({ db, deviceType: undefined, session: adminSession });
+
+    const groupId = createId();
+    await db.insert(groups).values({
+      id: groupId,
+      name: "Group",
+      position: 1,
+    });
+    await db.insert(groupPermissions).values([
+      { groupId, permission: "admin" },
+      { groupId, permission: "board-full-all" },
+    ]);
+
+    // Act
+    await caller.savePermissions({
+      groupId,
+      permissions: [],
+    });
+
+    // Assert
+    const permissions = await db.query.groupPermissions.findMany({
+      where: eq(groupPermissions.groupId, groupId),
+    });
+
+    expect(permissions.length).toBe(0);
+  });
+
   test("with non existing group it should throw not found error", async () => {
     // Arrange
     const db = createDb();

packages/api/src/router/test/integration/integration-router.spec.ts

@@ -58,6 +58,171 @@ describe("all should return all integrations", () => {
     expect(result[1]!.kind).toBe("homeAssistant");
     expect(result.every(({ permissions }) => permissions.hasFullAccess && permissions.hasUseAccess)).toBe(true);
   });
+
+  test("with integration full access and no per-integration rows should return all integrations with full access", async () => {
+    const db = createDb();
+    const caller = integrationRouter.createCaller({
+      db,
+      deviceType: undefined,
+      session: defaultSessionWithPermissions(["integration-full-all"]),
+    });
+
+    await db.insert(integrations).values([
+      {
+        id: "1",
+        name: "Home assistant",
+        kind: "homeAssistant",
+        url: "http://homeassist.local",
+      },
+      {
+        id: "2",
+        name: "Home plex server",
+        kind: "plex",
+        url: "http://plex.local",
+      },
+    ]);
+
+    const result = await caller.all();
+    expect(result).toHaveLength(2);
+    for (const integration of result) {
+      expect(integration.permissions.hasFullAccess).toBe(true);
+    }
+  });
+
+  test("with integration use access should return all integrations", async () => {
+    const db = createDb();
+    const caller = integrationRouter.createCaller({
+      db,
+      deviceType: undefined,
+      session: defaultSessionWithPermissions(["integration-use-all"]),
+    });
+
+    await db.insert(integrations).values([
+      {
+        id: "1",
+        name: "Home assistant",
+        kind: "homeAssistant",
+        url: "http://homeassist.local",
+      },
+      {
+        id: "2",
+        name: "Home plex server",
+        kind: "plex",
+        url: "http://plex.local",
+      },
+    ]);
+
+    const result = await caller.all();
+    expect(result.length).toBe(2);
+  });
+
+  test("without global integration access should only return integrations with use access", async () => {
+    const db = createDb();
+    const caller = integrationRouter.createCaller({
+      db,
+      deviceType: undefined,
+      session: defaultSessionWithPermissions(),
+    });
+
+    await db.insert(integrations).values([
+      {
+        id: "1",
+        name: "Home assistant",
+        kind: "homeAssistant",
+        url: "http://homeassist.local",
+      },
+      {
+        id: "2",
+        name: "Home plex server",
+        kind: "plex",
+        url: "http://plex.local",
+      },
+    ]);
+    await db.insert(users).values({ id: defaultUserId });
+    await db.insert(integrationUserPermissions).values({
+      integrationId: "1",
+      userId: defaultUserId,
+      permission: "use",
+    });
+
+    const result = await caller.all();
+    expect(result).toHaveLength(1);
+    expect(result[0]!.id).toBe("1");
+    expect(result[0]!.permissions.hasUseAccess).toBe(true);
+  });
+
+  test("with a per-integration interact grant should return the integration with use access", async () => {
+    const db = createDb();
+    const caller = integrationRouter.createCaller({
+      db,
+      deviceType: undefined,
+      session: defaultSessionWithPermissions(),
+    });
+
+    await db.insert(integrations).values([
+      {
+        id: "1",
+        name: "Home assistant",
+        kind: "homeAssistant",
+        url: "http://homeassist.local",
+      },
+      {
+        id: "2",
+        name: "Home plex server",
+        kind: "plex",
+        url: "http://plex.local",
+      },
+    ]);
+    await db.insert(users).values({ id: defaultUserId });
+    await db.insert(integrationUserPermissions).values({
+      integrationId: "1",
+      userId: defaultUserId,
+      permission: "interact",
+    });
+
+    const result = await caller.all();
+    expect(result).toHaveLength(1);
+    expect(result[0]!.id).toBe("1");
+    expect(result[0]!.permissions.hasUseAccess).toBe(true);
+  });
+});
+
+describe("search should return accessible integrations", () => {
+  test("without global integration access should only return integrations with use access as plain rows", async () => {
+    const db = createDb();
+    const caller = integrationRouter.createCaller({
+      db,
+      deviceType: undefined,
+      session: defaultSessionWithPermissions(),
+    });
+
+    await db.insert(integrations).values([
+      {
+        id: "1",
+        name: "Home assistant",
+        kind: "homeAssistant",
+        url: "http://homeassist.local",
+      },
+      {
+        id: "2",
+        name: "Home plex server",
+        kind: "plex",
+        url: "http://plex.local",
+      },
+    ]);
+    await db.insert(users).values({ id: defaultUserId });
+    await db.insert(integrationUserPermissions).values({
+      integrationId: "1",
+      userId: defaultUserId,
+      permission: "use",
+    });
+
+    const result = await caller.search({ query: "Home" });
+    expect(result).toHaveLength(1);
+    expect(result[0]!.id).toBe("1");
+    expect(result[0]).not.toHaveProperty("userPermissions");
+    expect(result[0]).not.toHaveProperty("groupPermissions");
+  });
 });
 
 describe("mediaRequestSearchTargets should return accessible media search integrations", () => {

packages/definitions/src/permissions.ts

@@ -117,3 +117,139 @@ export const groupPermissionKeys = objectKeys(groupPermissions).reduce((acc, key
   }
   return acc;
 }, [] as GroupPermissionKey[]);
+
+/**
+ * Describes how each permission category is presented in the group permission matrix UI.
+ *
+ * `levels` is an ordered escalation of access: every level implies the one below it through
+ * {@link groupPermissionParents}, so picking level N grants everything up to N.
+ *
+ * `capabilities` are the keys that are NOT part of that ladder - "may add new resources", "may
+ * upload", "may put any app on a board". They can be granted on their own (e.g. "members may create
+ * their own boards but not see anyone else's") and some levels already imply them; use
+ * {@link isCapabilityImpliedByLevel} to detect that instead of hard-coding it.
+ *
+ * Only keys that genuinely imply each other may share a ladder. `app-modify-all` implies
+ * `app-create` but NOT `app-use-all` (only `app-full-all` does), so `app-use-all` is a capability -
+ * putting it in the ladder would make picking "Modify" silently grant use of every app.
+ *
+ * Together, `levels` and `capabilities` cover every key in {@link groupPermissionKeys}, so the
+ * matrix is a lossless representation of a group's permissions.
+ */
+export const permissionMatrix = {
+  board: { levels: ["board-view-all", "board-modify-all", "board-full-all"], capabilities: ["board-create"] },
+  app: { levels: ["app-modify-all", "app-full-all"], capabilities: ["app-use-all", "app-create"] },
+  integration: {
+    levels: ["integration-use-all", "integration-interact-all", "integration-full-all"],
+    capabilities: ["integration-create"],
+  },
+  "search-engine": {
+    levels: ["search-engine-modify-all", "search-engine-full-all"],
+    capabilities: ["search-engine-create"],
+  },
+  media: { levels: ["media-view-all", "media-full-all"], capabilities: ["media-upload"] },
+  other: { levels: ["other-view-logs"], capabilities: [] },
+  admin: { levels: ["admin"], capabilities: [] },
+} as const satisfies Record<
+  string,
+  { levels: readonly GroupPermissionKey[]; capabilities: readonly GroupPermissionKey[] }
+>;
+
+export type PermissionMatrixCategory = keyof typeof permissionMatrix;
+
+export interface PermissionMatrixCategoryState {
+  /** 0 = no access, N = every key up to `permissionMatrix[category].levels[N - 1]` */
+  level: number;
+  /** The category's granted capability keys, including the ones the level already implies */
+  capabilities: readonly GroupPermissionKey[];
+}
+
+export type PermissionMatrixState = Record<PermissionMatrixCategory, PermissionMatrixCategoryState>;
+
+/**
+ * Whether the given level already grants a capability through permission inheritance.
+ * For example board level 3 (`board-full-all`) implies `board-create`.
+ */
+export const isCapabilityImpliedByLevel = (
+  category: PermissionMatrixCategory,
+  capability: GroupPermissionKey,
+  level: number,
+) => {
+  if (level <= 0) {
+    return false;
+  }
+
+  return getPermissionsWithChildren([...permissionMatrix[category].levels.slice(0, level)]).includes(capability);
+};
+
+export const permissionsToMatrixState = (permissions: GroupPermissionKey[]): PermissionMatrixState => {
+  const permissionSet = new Set(permissions);
+
+  return objectKeys(permissionMatrix).reduce((acc, category) => {
+    let level = 0;
+    permissionMatrix[category].levels.forEach((key, index) => {
+      if (permissionSet.has(key)) {
+        level = index + 1;
+      }
+    });
+
+    acc[category] = {
+      level,
+      capabilities: permissionMatrix[category].capabilities.filter(
+        (capability) => permissionSet.has(capability) || isCapabilityImpliedByLevel(category, capability, level),
+      ),
+    };
+    return acc;
+  }, {} as PermissionMatrixState);
+};
+
+export const matrixStateToPermissions = (state: PermissionMatrixState): GroupPermissionKey[] => {
+  return objectKeys(permissionMatrix).reduce((acc, category) => {
+    const { level, capabilities } = state[category];
+    acc.push(...permissionMatrix[category].levels.slice(0, level));
+    // Skip capabilities the chosen level already implies, so the stored permissions stay minimal
+    // and a state -> permissions -> state round-trip is exact.
+    acc.push(...capabilities.filter((capability) => !isCapabilityImpliedByLevel(category, capability, level)));
+    return acc;
+  }, [] as GroupPermissionKey[]);
+};
+
+export interface ManagementSectionAccess {
+  /** May see and manage every resource of the section */
+  canManageAll: boolean;
+  /** May add new resources to the section */
+  canCreate: boolean;
+  /** May open the section at all */
+  canAccess: boolean;
+}
+
+/**
+ * A management section is reachable when the user can do at least one thing in it. Both rules live
+ * here so the navigation, the pages themselves and the management home statistics cannot drift
+ * apart - each of them consumes the same function.
+ */
+export const getAppManagementAccess = (permissions: readonly GroupPermissionKey[]): ManagementSectionAccess => {
+  const canManageAll = permissions.includes("app-modify-all");
+  const canCreate = permissions.includes("app-create");
+
+  return { canManageAll, canCreate, canAccess: canManageAll || canCreate };
+};
+
+/**
+ * `hasDelegatedFullAccess` is whether the user was granted full access to at least one specific
+ * integration; it has to be looked up per request, so the caller resolves it.
+ */
+export const getIntegrationManagementAccess = (
+  permissions: readonly GroupPermissionKey[],
+  hasDelegatedFullAccess: boolean,
+): ManagementSectionAccess & { hasDelegatedFullAccess: boolean } => {
+  const canManageAll = permissions.includes("integration-full-all");
+  const canCreate = permissions.includes("integration-create");
+
+  return {
+    canManageAll,
+    canCreate,
+    hasDelegatedFullAccess,
+    canAccess: canManageAll || canCreate || hasDelegatedFullAccess,
+  };
+};

packages/definitions/src/test/permissions.spec.ts

@@ -1,7 +1,28 @@
 import { describe, expect, test } from "vitest";
 
-import type { GroupPermissionKey } from "../permissions";
-import { getPermissionsWithChildren, getPermissionsWithParents } from "../permissions";
+import type { GroupPermissionKey, PermissionMatrixState } from "../permissions";
+import {
+  getAppManagementAccess,
+  getIntegrationManagementAccess,
+  getPermissionsWithChildren,
+  getPermissionsWithParents,
+  groupPermissionKeys,
+  isCapabilityImpliedByLevel,
+  matrixStateToPermissions,
+  permissionMatrix,
+  permissionsToMatrixState,
+} from "../permissions";
+
+const emptyState = (overrides: Partial<PermissionMatrixState> = {}): PermissionMatrixState => ({
+  board: { level: 0, capabilities: [] },
+  app: { level: 0, capabilities: [] },
+  integration: { level: 0, capabilities: [] },
+  "search-engine": { level: 0, capabilities: [] },
+  media: { level: 0, capabilities: [] },
+  other: { level: 0, capabilities: [] },
+  admin: { level: 0, capabilities: [] },
+  ...overrides,
+});
 
 describe("getPermissionsWithParents should return the correct permissions", () => {
   test.each([
@@ -45,3 +66,204 @@ describe("getPermissionsWithChildren should return the correct permissions", ()
     expect(getPermissionsWithChildren(input)).toEqual(expect.arrayContaining(expectedOutput));
   });
 });
+
+describe("the matrix must be able to represent every permission", () => {
+  test("every group permission key is covered by exactly one category", () => {
+    const covered = Object.values(permissionMatrix).flatMap(({ levels, capabilities }) => [...levels, ...capabilities]);
+    expect(covered.toSorted()).toEqual(groupPermissionKeys.toSorted());
+  });
+
+  test.each(groupPermissionKeys.map((key) => [key]))("expect %s to survive a round-trip on its own", (key) => {
+    expect(matrixStateToPermissions(permissionsToMatrixState([key]))).toContain(key);
+  });
+
+  test("every ladder is a real chain, so no level can fabricate a sibling permission", () => {
+    Object.values(permissionMatrix).forEach(({ levels }) => {
+      levels.forEach((key, index) => {
+        // Selecting a level must never grant more than that level's key already implies.
+        const implied = getPermissionsWithChildren([key]);
+        expect(levels.slice(0, index + 1).every((lower) => implied.includes(lower))).toBe(true);
+      });
+    });
+  });
+});
+
+describe("permissionsToMatrixState should resolve the highest present level per category", () => {
+  test("resolves the highest present level key", () => {
+    expect(permissionsToMatrixState(["board-view-all", "board-modify-all"]).board.level).toBe(2);
+  });
+
+  test("resolves the admin category", () => {
+    expect(permissionsToMatrixState(["admin"]).admin.level).toBe(1);
+  });
+
+  test("resolves an empty selection to all zero", () => {
+    const state = permissionsToMatrixState([]);
+    expect(Object.values(state).every(({ level, capabilities }) => level === 0 && capabilities.length === 0)).toBe(
+      true,
+    );
+  });
+
+  test("resolves a standalone create key without granting any level", () => {
+    expect(permissionsToMatrixState(["board-create"]).board).toEqual({ level: 0, capabilities: ["board-create"] });
+  });
+
+  test("marks a capability as granted when the level implies it", () => {
+    expect(permissionsToMatrixState(["board-full-all"]).board.capabilities).toEqual(["board-create"]);
+    expect(permissionsToMatrixState(["app-modify-all"]).app.capabilities).toEqual(["app-create"]);
+    expect(permissionsToMatrixState(["media-full-all"]).media.capabilities).toEqual(["media-upload"]);
+  });
+
+  test("does not mark a capability as granted for a level that does not imply it", () => {
+    expect(permissionsToMatrixState(["board-modify-all"]).board.capabilities).toEqual([]);
+    expect(permissionsToMatrixState(["integration-interact-all"]).integration.capabilities).toEqual([]);
+  });
+
+  test("app-use-all is a capability, not a level, because app-modify-all does not imply it", () => {
+    // Regression: modelling use as the level below modify made picking Modify silently grant the
+    // use of every app, which the permission graph does not do.
+    const state = permissionsToMatrixState(["app-modify-all"]);
+    expect(state.app).toEqual({ level: 1, capabilities: ["app-create"] });
+    expect(matrixStateToPermissions(state)).toEqual(["app-modify-all"]);
+  });
+
+  test("app-full-all implies both app capabilities", () => {
+    expect(permissionsToMatrixState(["app-full-all"]).app).toEqual({
+      level: 2,
+      capabilities: ["app-use-all", "app-create"],
+    });
+  });
+});
+
+describe("isCapabilityImpliedByLevel", () => {
+  test.each([
+    ["board", "board-create", 0, false],
+    ["board", "board-create", 1, false],
+    ["board", "board-create", 2, false],
+    ["board", "board-create", 3, true],
+    ["app", "app-create", 1, true],
+    ["app", "app-use-all", 1, false],
+    ["app", "app-use-all", 2, true],
+    ["integration", "integration-create", 2, false],
+    ["integration", "integration-create", 3, true],
+    ["search-engine", "search-engine-create", 1, true],
+    ["media", "media-upload", 1, false],
+    ["media", "media-upload", 2, true],
+  ] satisfies [keyof typeof permissionMatrix, GroupPermissionKey, number, boolean][])(
+    "expect %s at level %i to imply %s: %s",
+    (category, capability, level, expected) => {
+      expect(isCapabilityImpliedByLevel(category, capability, level)).toBe(expected);
+    },
+  );
+});
+
+describe("matrixStateToPermissions should expand levels into permission keys", () => {
+  test("expands a level into the ordered level keys", () => {
+    expect(matrixStateToPermissions(emptyState({ board: { level: 2, capabilities: [] } }))).toEqual([
+      "board-view-all",
+      "board-modify-all",
+    ]);
+  });
+
+  test("expands the admin category into the admin key", () => {
+    expect(matrixStateToPermissions(emptyState({ admin: { level: 1, capabilities: [] } }))).toEqual(["admin"]);
+  });
+
+  test("emits a standalone capability without any level", () => {
+    expect(matrixStateToPermissions(emptyState({ board: { level: 0, capabilities: ["board-create"] } }))).toEqual([
+      "board-create",
+    ]);
+  });
+
+  test("emits media-upload as the capability of the media category", () => {
+    expect(matrixStateToPermissions(emptyState({ media: { level: 0, capabilities: ["media-upload"] } }))).toEqual([
+      "media-upload",
+    ]);
+  });
+
+  test("emits app-use-all without granting any app level", () => {
+    expect(matrixStateToPermissions(emptyState({ app: { level: 0, capabilities: ["app-use-all"] } }))).toEqual([
+      "app-use-all",
+    ]);
+  });
+
+  test("omits a capability that the chosen level already implies", () => {
+    expect(matrixStateToPermissions(emptyState({ board: { level: 3, capabilities: ["board-create"] } }))).toEqual([
+      "board-view-all",
+      "board-modify-all",
+      "board-full-all",
+    ]);
+  });
+});
+
+describe("matrix helpers should round-trip stably", () => {
+  test.each([
+    [["board-view-all", "board-modify-all"]],
+    [["integration-use-all", "integration-interact-all", "integration-full-all"]],
+    [["admin"]],
+    [[]],
+    [["search-engine-modify-all", "search-engine-full-all", "media-view-all", "other-view-logs"]],
+    [["board-create"]],
+    [["media-upload"]],
+    [["board-create", "app-create", "integration-create", "search-engine-create", "media-upload"]],
+    [["board-create", "board-view-all"]],
+    [["app-modify-all"]],
+    [["app-use-all"]],
+    [["app-use-all", "app-modify-all"]],
+  ] satisfies [GroupPermissionKey[]][])("expect %s to round-trip", (permissions) => {
+    const roundTripped = matrixStateToPermissions(permissionsToMatrixState(permissions));
+    expect(roundTripped).toEqual(expect.arrayContaining(permissions));
+    expect(roundTripped).toHaveLength(permissions.length);
+  });
+
+  test("expect a redundant capability key to be normalised away by the level that implies it", () => {
+    // app-modify-all already grants app-create, so the matrix stores the minimal set. The permission
+    // is not lost: getPermissionsWithChildren re-derives it whenever permissions are read.
+    const roundTripped = matrixStateToPermissions(permissionsToMatrixState(["app-create", "app-modify-all"]));
+    expect(roundTripped).toEqual(["app-modify-all"]);
+    expect(getPermissionsWithChildren(roundTripped)).toContain("app-create");
+  });
+
+  test("expect a single higher-level key to expand to its full set on round-trip", () => {
+    expect(matrixStateToPermissions(permissionsToMatrixState(["board-full-all"]))).toEqual([
+      "board-view-all",
+      "board-modify-all",
+      "board-full-all",
+    ]);
+  });
+});
+
+describe("management section access", () => {
+  test.each([
+    [[], false, false],
+    [["app-create"], true, false],
+    [["app-modify-all"], true, true],
+    [["app-full-all", "app-modify-all"], true, true],
+    [["app-use-all"], false, false],
+    [["board-modify-all"], false, false],
+  ] satisfies [GroupPermissionKey[], boolean, boolean][])(
+    "expect apps with %s to be reachable: %s, manage-all: %s",
+    (permissions, canAccess, canManageAll) => {
+      const access = getAppManagementAccess(permissions);
+      expect(access.canAccess).toBe(canAccess);
+      expect(access.canManageAll).toBe(canManageAll);
+    },
+  );
+
+  test.each([
+    [[], false, false, false],
+    [[], true, true, false],
+    [["integration-create"], false, true, false],
+    [["integration-full-all"], false, true, true],
+    [["integration-use-all"], false, false, false],
+    [["integration-interact-all"], false, false, false],
+    [["integration-interact-all"], true, true, false],
+  ] satisfies [GroupPermissionKey[], boolean, boolean, boolean][])(
+    "expect integrations with %s and delegated access %s to be reachable: %s, manage-all: %s",
+    (permissions, hasDelegatedFullAccess, canAccess, canManageAll) => {
+      const access = getIntegrationManagementAccess(permissions, hasDelegatedFullAccess);
+      expect(access.canAccess).toBe(canAccess);
+      expect(access.canManageAll).toBe(canManageAll);
+    },
+  );
+});

packages/spotlight/src/modes/app-integration-board/index.tsx

@@ -17,10 +17,11 @@ export const appIntegrationBoardMode = {
       return groups;
     }
 
-    return groups.concat(
-      session.user.permissions.includes("board-modify-all")
-        ? [appsSearchGroup, integrationsSearchGroup]
-        : [integrationsSearchGroup],
-    );
+    // Mirrors the gate on app.search: either permission may browse the app catalogue, so an app
+    // administrator without board access still gets the group instead of a FORBIDDEN response.
+    const canSearchApps =
+      session.user.permissions.includes("board-modify-all") || session.user.permissions.includes("app-modify-all");
+
+    return groups.concat(canSearchApps ? [appsSearchGroup, integrationsSearchGroup] : [integrationsSearchGroup]);
   },
 } satisfies SearchMode;

packages/translation/src/lang/en.json

@@ -648,6 +648,35 @@
             "description": "Allow members to manage and delete any search engine"
           }
         }
+      },
+      "matrix": {
+        "none": "No access",
+        "impliedHint": "Also grants: {permissions}",
+        "grantedViaAdmin": "Administrators already have this. Set Admin to “No access” to configure it separately.",
+        "preset": {
+          "label": "Presets",
+          "viewer": "Viewer",
+          "viewerDescription": "Read-only: view boards and medias, use apps and integrations that already exist.",
+          "editor": "Editor",
+          "editorDescription": "Day-to-day management: create and edit boards, apps, integrations and search engines.",
+          "admin": "Admin",
+          "adminDescription": "Unrestricted access to every feature and setting, including user management.",
+          "custom": "Custom"
+        },
+        "effective": {
+          "title": "Effective permissions",
+          "description": "The full, de-duplicated set of actions members of this group can perform, including permissions granted indirectly.",
+          "empty": "No permissions selected"
+        },
+        "noneDescription": "Members get no access to this area.",
+        "level": {
+          "view": "View",
+          "use": "Use",
+          "interact": "Interact",
+          "modify": "Modify",
+          "full": "Full"
+        },
+        "capabilityIncluded": "Already included in “{level}”"
       }
     },
     "memberNotice": {
@@ -774,7 +803,9 @@
           "action": "Create your first app",
           "filteredTitle": "No apps match your search",
           "filteredDescription": "No apps match \"{search}\". Try another name or URL.",
-          "clearSearch": "Clear search"
+          "clearSearch": "Clear search",
+          "createOnlyTitle": "You can only add apps",
+          "createOnlyDescription": "Your permissions let you create apps but not browse existing ones. Ask an administrator for app management access to see the full list."
         }
       },
       "create": {
@@ -1576,6 +1607,7 @@
         "title": "Integrations",
         "ariaLabel": "Configured integrations",
         "search": "Search integrations",
+        "scopedNote": "Showing only the integrations you are allowed to manage.",
         "action": {
           "edit": "Edit {name}",
           "delete": "Delete {name}"
@@ -1586,7 +1618,9 @@
           "action": "Create your first integration",
           "filteredTitle": "No integrations match your search",
           "filteredDescription": "No integrations match \"{search}\". Try another name, type, or URL.",
-          "clearSearch": "Clear search"
+          "clearSearch": "Clear search",
+          "createOnlyTitle": "You can only add integrations",
+          "createOnlyDescription": "Your permissions let you create integrations but not manage existing ones. Ask an administrator for access to the ones you need."
         }
       },
       "create": {
@@ -6142,7 +6176,8 @@
     },
     "notFound": {
       "title": "Not Found",
-      "text": "Could not find requested resource"
+      "text": "Could not find requested resource",
+      "backToHome": "Back to management home"
     },
     "error": {
       "title": "This page couldn't load",