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#!/bin/bash
# Generate a certificate for the systemtap server and add it to the
# database of trusted servers for the client.
#
# Copyright (C) 2008, 2009 Red Hat Inc.
#
# This file is part of systemtap, and is free software. You can
# redistribute it and/or modify it under the terms of the GNU General
# Public License (GPL); either version 2, or (at your option) any
# later version.
# Initialize the environment
. ${PKGLIBEXECDIR}stap-env
# Obtain the certificate database directory name.
serverdb=$1
if test "X$serverdb" = "X"; then
serverdb=$stap_ssl_db/server
fi
rm -fr $serverdb
# Create the server's certificate database directory.
if ! mkdir -p -m 755 $serverdb; then
echo "Unable to create the server certificate database directory: $serverdb" >&2
exit 1
fi
# Create the certificate database password file. Care must be taken
# that this file is only readable by the owner.
if ! (touch $serverdb/pw && chmod 600 $serverdb/pw); then
echo "Unable to create the server certificate database password file: $serverdb/pw" >&2
exit 1
fi
# Generate a random password.
mkpasswd -l 20 > $serverdb/pw 2>/dev/null || \
apg -a 1 -n 1 -m 20 -x 20 > $serverdb/pw 2>/dev/null || \
(read -n20 password </dev/urandom; echo "$password" > $serverdb/pw)
# Generate the server certificate database
if ! certutil -N -d $serverdb -f $serverdb/pw > /dev/null; then
echo "Unable to initialize the server certificate database directory: $serverdb" >&2
exit 1
fi
# We need some random noise for generating keys
dd bs=123 count=1 < /dev/urandom > $serverdb/noise 2> /dev/null
# Generate a request for the server's certificate.
certutil -R -d $serverdb -f $serverdb/pw -s "CN=Systemtap Compile Server, OU=Systemtap, O=Red Hat, C=US" -o $serverdb/stap.req -z $serverdb/noise 2> /dev/null
rm -fr $serverdb/noise
# Create the certificate file first so that it always has the proper access permissions.
if ! (touch $serverdb/$stap_certfile && chmod 644 $serverdb/$stap_certfile); then
echo "Unable to create the server certificate file: $serverdb/$stap_certfile" >&2
exit 1
fi
# Now generate the actual certificate.
certutil -C -i $serverdb/stap.req -o $serverdb/$stap_certfile -x -d $serverdb -f $serverdb/pw -5 -8 "$HOSTNAME,localhost" >/dev/null <<-EOF
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y
EOF
rm -fr $serverdb/stap.req
# Add the certificate to the server's certificate/key database as a trusted peer, ssl server and object signer
certutil -A -n stap-server -t "PCu,,PCu" -i $serverdb/$stap_certfile -d $serverdb -f $serverdb/pw
echo "Certificate $serverdb/$stap_certfile created and added to database $serverdb"
exit 0
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