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What is the problem? - `UserActionsController#index` enforces user-level visibility via `Guardian#can_see_profile?` and `Guardian#can_see_user_actions?` before returning results - `UserActionsController#show` bypasses these checks entirely, only applying content-level filters (topic/post/category visibility) through `UserAction.stream_item` - This allows retrieval of activity records for users with hidden profiles or when the activity tab is globally disabled, via sequential ID enumeration What is the solution? - After fetching the stream item, look up the activity owner via `User.find_by` and apply `Guardian#can_see_profile?` and `Guardian#can_see_user_actions?` checks, matching the `index` action's authorization pattern - All denial paths raise `Discourse::NotFound` to prevent enumeration of record existence - Add test coverage for `UserActionsController#show` covering hidden profiles, the `hide_user_activity_tab` setting, private action types, staff bypass, and self-access
69 lines
2.1 KiB
Ruby
69 lines
2.1 KiB
Ruby
# frozen_string_literal: true
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class UserActionsController < ApplicationController
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def index
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user_actions_params.require(:username)
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user =
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fetch_user_from_params(
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include_inactive:
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current_user.try(:staff?) || (current_user && SiteSetting.show_inactive_accounts),
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)
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offset = [0, user_actions_params[:offset].to_i].max
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action_types = (user_actions_params[:filter] || "").split(",").map(&:to_i)
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limit = user_actions_params.fetch(:limit, 30).to_i
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ensure_user_actions_visible!(user, action_types)
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if action_types.empty? && !guardian.can_see_user_actions?(user, UserAction.private_types)
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action_types = UserAction.types.values - UserAction.private_types
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end
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opts = {
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user_id: user.id,
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user: user,
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offset: offset,
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limit: limit,
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action_types: action_types,
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guardian: guardian,
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ignore_private_messages: params[:filter].blank?,
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acting_username: params[:acting_username],
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}
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stream = UserAction.stream(opts).to_a
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response = { user_actions: serialize_data(stream, UserActionSerializer) }
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if guardian.can_lazy_load_categories?
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category_ids = stream.map(&:category_id).compact.uniq
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categories = Category.secured(guardian).with_parents(category_ids)
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response[:categories] = serialize_data(categories, CategoryBadgeSerializer)
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end
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render json: response
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end
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def show
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params.require(:id)
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stream_item = UserAction.stream_item(params[:id], guardian)
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raise Discourse::NotFound if stream_item.blank?
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user = User.find_by(id: stream_item.target_user_id)
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raise Discourse::NotFound if user.blank?
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ensure_user_actions_visible!(user, [stream_item.action_type])
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render_serialized(stream_item, UserActionSerializer)
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end
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private
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def ensure_user_actions_visible!(user, action_types)
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raise Discourse::NotFound unless guardian.can_see_profile?(user)
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raise Discourse::NotFound unless guardian.can_see_user_actions?(user, action_types)
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end
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def user_actions_params
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@user_actions_params ||= params.permit(:username, :filter, :offset, :acting_username, :limit)
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end
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end
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