Suricata - Initial bpf support

salt/common/tools/sbin/so-bpf-compile

@@ -0,0 +1,37 @@
+#!/bin/bash
+
+# Copyright 2014 Google Inc. All rights reserved.
+#
+# 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.
+
+if [ "$#" -lt 2 ]; then
+  cat 1>&2 <<EOF
+$0 compiles a BPF expression to be passed to stenotype to apply a socket filter.
+Its first argument is the interface (link type is required) and all other arguments
+are passed to TCPDump.
+
+Examples:
+ $0 eth0 dst port 80
+ $0 eth0 udp port 53
+EOF
+  exit 1
+fi
+
+interface="$1"
+shift
+sudo tcpdump -i $interface -ddd $@ | tail -n+2 |
+while read line; do
+  cols=( $line )
+  printf "%04x%02x%02x%08x" ${cols[0]} ${cols[1]} ${cols[2]} ${cols[3]}
+done
+echo ""