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diff --git a/keyserver/src/creators/role-creator.js b/keyserver/src/creators/role-creator.js
--- a/keyserver/src/creators/role-creator.js
+++ b/keyserver/src/creators/role-creator.js
@@ -4,11 +4,15 @@
getRolePermissionBlobs,
getThreadPermissionBlobFromUserSurfacedPermissions,
} from 'lib/permissions/thread-permissions.js';
+import { threadHasPermission } from 'lib/shared/thread-utils.js';
import {
userSurfacedPermissionsSet,
threadPermissions,
} from 'lib/types/thread-permission-types.js';
-import type { ThreadType } from 'lib/types/thread-types-enum.js';
+import {
+ threadTypeIsCommunityRoot,
+ type ThreadType,
+} from 'lib/types/thread-types-enum.js';
import type {
RoleInfo,
RoleModificationRequest,
@@ -25,7 +29,6 @@
fetchServerThreadInfos,
rawThreadInfosFromServerThreadInfos,
} from '../fetchers/thread-fetchers.js';
-import { checkThreadPermission } from '../fetchers/thread-permission-fetchers.js';
import type { Viewer } from '../session/viewer.js';
import { updateRole } from '../updaters/thread-updaters.js';
@@ -85,16 +88,25 @@
viewer: Viewer,
request: RoleModificationRequest,
): Promise<RoleModificationResult> {
- const hasPermission = await checkThreadPermission(
- viewer,
- request.community,
+ const { community, name, permissions } = request;
+
+ const { threadInfos } = await fetchThreadInfos(viewer, {
+ threadID: community,
+ });
+ const threadInfo = threadInfos[community];
+
+ const hasPermission = threadHasPermission(
+ threadInfo,
threadPermissions.CHANGE_ROLE,
);
+
if (!hasPermission) {
throw new ServerError('invalid_credentials');
}
- const { community, name, permissions } = request;
+ if (!threadTypeIsCommunityRoot(threadInfo.type)) {
+ throw new ServerError('invalid_parameters');
+ }
for (const permission of permissions) {
if (!userSurfacedPermissionsSet.has(permission)) {
@@ -105,11 +117,6 @@
const [id] = await createIDs('roles', 1);
const time = Date.now();
- const { threadInfos } = await fetchThreadInfos(viewer, {
- threadID: community,
- });
- const threadInfo = threadInfos[community];
-
const permissionsBlob = JSON.stringify(
getThreadPermissionBlobFromUserSurfacedPermissions(
permissions,

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