project/collaborators: implement ownership management

src/.claude/settings.json

@@ -13,6 +13,7 @@
       "Bash(gh pr view:*)",
       "Bash(gh:*)",
       "Bash(git add:*)",
+      "Bash(git grep:*)",
       "Bash(git branch:*)",
       "Bash(git checkout:*)",
       "Bash(git commit:*)",

src/packages/conat/hub/api/projects.ts

@@ -1,6 +1,7 @@
 import { authFirstRequireAccount } from "./util";
 import { type CreateProjectOptions } from "@cocalc/util/db-schema/projects";
 import { type UserCopyOptions } from "@cocalc/util/db-schema/projects";
+import { type UserGroup } from "@cocalc/util/project-ownership";
 
 export const projects = {
   createProject: authFirstRequireAccount,
@@ -9,6 +10,7 @@ export const projects = {
   addCollaborator: authFirstRequireAccount,
   inviteCollaborator: authFirstRequireAccount,
   inviteCollaboratorWithoutAccount: authFirstRequireAccount,
+  changeUserType: authFirstRequireAccount,
   setQuotas: authFirstRequireAccount,
   start: authFirstRequireAccount,
   stop: authFirstRequireAccount,
@@ -87,6 +89,18 @@ export interface Projects {
     };
   }) => Promise<void>;
 
+  changeUserType: ({
+    account_id,
+    opts,
+  }: {
+    account_id?: string;
+    opts: {
+      project_id: string;
+      target_account_id: string;
+      new_group: UserGroup;
+    };
+  }) => Promise<void>;
+
   setQuotas: (opts: {
     account_id?: string;
     project_id: string;

src/packages/database/postgres-user-queries.coffee

@@ -30,6 +30,7 @@ required = defaults.required
 {queryIsCmp, userGetQueryFilter} = require("./user-query/user-get-query")
 
 {updateRetentionData} = require('./postgres/retention')
+{sanitizeManageUsersOwnerOnly} = require('./postgres/project/manage-users-owner-only')
 
 { checkProjectName } = require("@cocalc/util/db-schema/name-rules");
 {callback2} = require('@cocalc/util/async-utils')
@@ -839,6 +840,13 @@ exports.extend_PostgreSQL = (ext) -> class PostgreSQL extends ext
                 users[id] = x
         return users
 
+    _user_set_query_project_manage_users_owner_only: (obj, account_id) =>
+        # This hook is called from the schema functional substitution to validate
+        # the manage_users_owner_only flag. This must be synchronous - async validation
+        # (permission checks) is done in the check_hook instead.
+        # Just do basic type validation and sanitization here
+        return sanitizeManageUsersOwnerOnly(obj.manage_users_owner_only)
+
     project_action: (opts) =>
         opts = defaults opts,
             project_id     : required
@@ -933,6 +941,12 @@ exports.extend_PostgreSQL = (ext) -> class PostgreSQL extends ext
                     cb("Only the owner of the project can currently change the project name.")
                     return
 
+        if new_val?.manage_users_owner_only? and new_val.manage_users_owner_only != old_val?.manage_users_owner_only
+            # Permission is enforced in the set-field interceptor; nothing to do here.
+            # Leaving this block for clarity and to avoid silent bypass if future callers
+            # modify manage_users_owner_only via another path.
+            dbg("manage_users_owner_only change requested")
+
         if new_val?.action_request? and JSON.stringify(new_val.action_request.time) != JSON.stringify(old_val?.action_request?.time)
             # Requesting an action, e.g., save, restart, etc.
             dbg("action_request -- #{misc.to_json(new_val.action_request)}")

src/packages/database/postgres/manage-users-owner-only.test.ts

@@ -0,0 +1,85 @@
+/*
+ *  This file is part of CoCalc: Copyright © 2025 Sagemath, Inc.
+ *  License: MS-RSL – see LICENSE.md for details
+ */
+
+import getPool, { initEphemeralDatabase } from "@cocalc/database/pool";
+import { db } from "@cocalc/database";
+import { uuid } from "@cocalc/util/misc";
+
+let pool: ReturnType<typeof getPool> | undefined;
+let dbAvailable = true;
+
+beforeAll(async () => {
+  try {
+    await initEphemeralDatabase();
+    pool = getPool();
+  } catch (err) {
+    // Skip locally if postgres is unavailable.
+    dbAvailable = false;
+    console.warn("Skipping manage_users_owner_only tests: " + err);
+  }
+}, 15000);
+
+afterAll(async () => {
+  if (pool) {
+    await pool.end();
+  }
+});
+
+async function insertProject(opts: {
+  projectId: string;
+  ownerId: string;
+  collaboratorId: string;
+}) {
+  const { projectId, ownerId, collaboratorId } = opts;
+  if (!pool) {
+    throw Error("Pool not initialized");
+  }
+  await pool.query("INSERT INTO projects(project_id, users) VALUES ($1, $2)", [
+    projectId,
+    {
+      [ownerId]: { group: "owner" },
+      [collaboratorId]: { group: "collaborator" },
+    },
+  ]);
+}
+
+describe("manage_users_owner_only set hook", () => {
+  const projectId = uuid();
+  const ownerId = uuid();
+  const collaboratorId = uuid();
+
+  beforeAll(async () => {
+    if (!dbAvailable) return;
+    await insertProject({ projectId, ownerId, collaboratorId });
+  });
+
+  test("owner can set manage_users_owner_only", async () => {
+    if (!dbAvailable) return;
+    const value = await db()._user_set_query_project_manage_users_owner_only(
+      { project_id: projectId, manage_users_owner_only: true },
+      ownerId,
+    );
+    expect(value).toBe(true);
+  });
+
+  test("collaborator call returns sanitized value (permission enforced elsewhere)", async () => {
+    if (!dbAvailable) return;
+    const value = await db()._user_set_query_project_manage_users_owner_only(
+      { project_id: projectId, manage_users_owner_only: true },
+      collaboratorId,
+    );
+    expect(value).toBe(true);
+  });
+
+  test("invalid type is rejected", async () => {
+    if (!dbAvailable) return;
+    expect(() =>
+      db()._user_set_query_project_manage_users_owner_only(
+        { project_id: projectId, manage_users_owner_only: "yes" as any },
+        ownerId,
+      ),
+    ).toThrow("manage_users_owner_only must be a boolean");
+  });
+});

src/packages/database/postgres/project/manage-users-owner-only.ts

@@ -0,0 +1,31 @@
+/*
+ *  This file is part of CoCalc: Copyright © 2025 Sagemath, Inc.
+ *  License: MS-RSL – see LICENSE.md for details
+ */
+
+export function sanitizeManageUsersOwnerOnly(
+  value: unknown,
+): boolean | undefined {
+  if (value === undefined || value === null) {
+    return undefined;
+  }
+  if (typeof value === "object") {
+    // Allow nested shape { manage_users_owner_only: boolean } from callers that wrap input.
+    const candidate = (value as any).manage_users_owner_only;
+    if (candidate !== undefined) {
+      return sanitizeManageUsersOwnerOnly(candidate);
+    }
+    // Allow Immutable.js style get("manage_users_owner_only")
+    const getter = (value as any).get;
+    if (typeof getter === "function") {
+      const maybe = getter.call(value, "manage_users_owner_only");
+      if (maybe !== undefined) {
+        return sanitizeManageUsersOwnerOnly(maybe);
+      }
+    }
+  }
+  if (typeof value !== "boolean") {
+    throw Error("manage_users_owner_only must be a boolean");
+  }
+  return value;
+}

src/packages/database/postgres/types.ts

@@ -48,8 +48,10 @@ export interface QueryOptions<T = UntypedQueryResult> {
   cb?: CB<QueryRows<T>>;
 }
 
-export interface AsyncQueryOptions<T = UntypedQueryResult>
-  extends Omit<QueryOptions<T>, "cb"> {}
+export interface AsyncQueryOptions<T = UntypedQueryResult> extends Omit<
+  QueryOptions<T>,
+  "cb"
+> {}
 
 export interface UserQueryOptions {
   client_id?: string; // if given, uses to control number of queries at once by one client.
@@ -406,8 +408,13 @@ export interface PostgreSQL extends EventEmitter {
   webapp_error(opts: object);
 
   set_project_settings(opts: { project_id: string; settings: object; cb?: CB });
-
-  uncaught_exception: (err:any) => void;
+
+  _user_set_query_project_manage_users_owner_only(
+    obj: any,
+    account_id: string,
+  ): string | undefined;
+
+  uncaught_exception: (err: any) => void;
 }
 
 // This is an extension of BaseProject in projects/control/base.ts

src/packages/frontend/antd-bootstrap.tsx

@@ -86,7 +86,7 @@ function parse_bsStyle(props: {
   let type =
     props.bsStyle == null
       ? "default"
-      : BS_STYLE_TO_TYPE[props.bsStyle] ?? "default";
+      : (BS_STYLE_TO_TYPE[props.bsStyle] ?? "default");
 
   let style: React.CSSProperties | undefined = undefined;
   // antd has no analogue of "success" & "warning", it's not clear to me what

src/packages/frontend/client/project-collaborators.ts

@@ -3,6 +3,8 @@
  *  License: MS-RSL – see LICENSE.md for details
  */
 
+// cSpell:ignore replyto collabs noncloud
+
 import type { ConatClient } from "@cocalc/frontend/conat/client";
 import type { AddCollaborator } from "@cocalc/conat/hub/api/projects";
 
@@ -57,10 +59,18 @@ export class ProjectCollaborators {
   public async add_collaborator(
     opts: AddCollaborator,
   ): Promise<{ project_id?: string | string[] }> {
-    // project_id is a single string or possibly an array of project_id's 
+    // project_id is a single string or possibly an array of project_id's
     // in case of a token.
     return await this.conat.hub.projects.addCollaborator({
       opts,
     });
   }
+
+  public async change_user_type(opts: {
+    project_id: string;
+    target_account_id: string;
+    new_group: "owner" | "collaborator";
+  }): Promise<void> {
+    return await this.conat.hub.projects.changeUserType({ opts });
+  }
 }

src/packages/frontend/collaborators/add-collaborators.tsx

@@ -7,8 +7,11 @@
 Add collaborators to a project
 */
 
+// cSpell:ignore replyto noncloud collabs
+
 import { Alert, Button, Input, Select } from "antd";
-import { useIntl } from "react-intl";
+import { FormattedMessage, useIntl } from "react-intl";
+
 import { labels } from "@cocalc/frontend/i18n";
 import {
   React,
@@ -17,12 +20,19 @@ import {
   useIsMountedRef,
   useMemo,
   useRef,
+  useRedux,
   useTypedRedux,
   useState,
 } from "../app-framework";
-import { Well } from "../antd-bootstrap";
-import { A, Icon, Loading, ErrorDisplay, Gap } from "../components";
-import { webapp_client } from "../webapp-client";
+import { Well } from "@cocalc/frontend/antd-bootstrap";
+import {
+  A,
+  Icon,
+  Loading,
+  ErrorDisplay,
+  Gap,
+} from "@cocalc/frontend/components";
+import { webapp_client } from "@cocalc/frontend/webapp-client";
 import { SITE_NAME } from "@cocalc/util/theme";
 import {
   contains_url,
@@ -34,10 +44,10 @@ import {
   search_match,
   search_split,
 } from "@cocalc/util/misc";
-import { Project } from "../projects/store";
-import { Avatar } from "../account/avatar/avatar";
+import { Project } from "@cocalc/frontend/projects/store";
+import { Avatar } from "@cocalc/frontend/account/avatar/avatar";
 import { ProjectInviteTokens } from "./project-invite-tokens";
-import { alert_message } from "../alerts";
+import { alert_message } from "@cocalc/frontend/alerts";
 import { useStudentProjectFunctionality } from "@cocalc/frontend/course";
 import Sandbox from "./sandbox";
 import track from "@cocalc/frontend/user-tracking";
@@ -104,6 +114,20 @@ export const AddCollaborators: React.FC<Props> = ({
     () => project_map?.get(project_id),
     [project_id, project_map],
   );
+  const get_account_id = useRedux("account", "get_account_id");
+  const current_account_id = get_account_id();
+  const strict_collaborator_management =
+    useTypedRedux("customize", "strict_collaborator_management") ?? false;
+  const manage_users_owner_only =
+    strict_collaborator_management ||
+    (project?.get("manage_users_owner_only") ?? false);
+  const current_user_group = project?.getIn([
+    "users",
+    current_account_id,
+    "group",
+  ]);
+  const isOwner = current_user_group === "owner";
+  const collaboratorManagementRestricted = manage_users_owner_only && !isOwner;
 
   // search that user has typed in so far
   const [search, set_search] = useState<string>("");
@@ -257,7 +281,7 @@ export const AddCollaborators: React.FC<Props> = ({
         // react rendered version of this that is much nicer (with pictures!) someday.
         const extra: string[] = [];
         if (r.account_id != null && user_map.get(r.account_id)) {
-          extra.push("Collaborator");
+          extra.push(intl.formatMessage(labels.collaborator));
         }
         if (r.last_active) {
           extra.push(`Active ${new Date(r.last_active).toLocaleDateString()}`);
@@ -691,6 +715,21 @@ export const AddCollaborators: React.FC<Props> = ({
     return <div></div>;
   }
 
+  if (collaboratorManagementRestricted) {
+    return (
+      <Alert
+        type="info"
+        showIcon={false}
+        message={
+          <FormattedMessage
+            id="project.collaborators.add.owner_only_setting"
+            defaultMessage="Only project owners can add collaborators when owner-only management is enabled."
+          />
+        }
+      />
+    );
+  }
+
   return (
     <div
       style={isFlyout ? { paddingLeft: "5px", paddingRight: "5px" } : undefined}