#
# Copyright (C) 2020 The Falco Authors.
#
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
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- list: cat_cmdlines
  items: [cat /dev/zero, "cat /dev/null"]

- rule: Open From Cat
  desc: A process named cat does an open
  condition: evt.type=open and proc.name=cat
  output: "An open was seen (command=%proc.cmdline)"
  exceptions:
    - name: proc_name_cmdline
      fields: [proc.name, proc.cmdline]
      comps: [=, in]
      values:
        - [cat, (cat_cmdlines)]
  priority: WARNING