foodsoft/app/controllers/concerns/auth_api.rb

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# Controller concern for authentication methods
#
# Split off from main +ApplicationController+ to allow e.g.
# Doorkeeper to use it too.
module Concerns::AuthApi
extend ActiveSupport::Concern
protected
def authenticate
# authenticate does not look at scopes, we just want to know if there's a valid token
# @see https://github.com/doorkeeper-gem/doorkeeper/blob/v5.0.1/lib/doorkeeper/models/access_token_mixin.rb#L218
doorkeeper_render_error unless doorkeeper_token && doorkeeper_token.accessible?
super if current_user
end
# @return [User] Current user, or +nil+ if no valid token.
def current_user
@current_user ||= User.undeleted.find(doorkeeper_token.resource_owner_id) if doorkeeper_token
end
def doorkeeper_authorize!(*scopes)
super(*scopes)
# In addition to Doorkeeper's authorization and scope check, we also verify
# that the user has permissions for the scope (through its workgroups).
# Unless no scopes were supplied, which means we only want to make sure there
# is a valid user.
#
# If Doorkeeper's +handle_auth_errors+ is set to +:raise+, we don't get here,
# but otherwise we need to check whether +super+ rendered an error.
doorkeeper_authorize_roles!(*scopes) if scopes.present? && !performed?
end
private
# Make sure that at least one the given OAuth scopes is valid for the current user's permissions.
# @raise Api::Errors::PermissionsRequired
def doorkeeper_authorize_roles!(*scopes)
unless scopes.any? {|scope| doorkeeper_scope_permitted?(scope) }
raise Api::Errors::PermissionRequired.new('Forbidden, no permission')
end
end
# Check whether a given OAuth scope is permitted for the current user.
# @note This does not validate whether the given scope is a valid scope.
# @return [Boolean] Whether the given scope is valid for the current user.
# @see https://github.com/foodcoops/foodsoft/issues/582#issuecomment-442513237
def doorkeeper_scope_permitted?(scope)
scope_parts = scope.split(':')
# user sub-scopes like +config:user+ are always permitted
if scope_parts.last == 'user'
return true
end
case scope_parts.first
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when 'user' then return true # access to the current user's own profile
when 'config' then return current_user.role_admin?
when 'users' then return current_user.role_admin?
when 'workgroups' then return current_user.role_admin?
when 'suppliers' then return current_user.role_suppliers?
when 'group_orders' then return current_user.role_orders?
when 'finance' then return current_user.role_finance?
# please note that offline_access does not belong here, since it is not used for permission checking
end
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case scope
when 'orders:read' then return true
when 'orders:write' then return current_user.role_orders?
end
end
end