#!/bin/sh

#  Licensed to the Apache Software Foundation (ASF) under one
#  or more contributor license agreements.  See the NOTICE file
#  distributed with this work for additional information
#  regarding copyright ownership.  The ASF licenses this file
#  to you 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.

# Generate a minimal HTTPD form authentication configuration
here=`echo "import os; print os.path.realpath('$0')" | python`; here=`dirname $here`
mkdir -p $1
root=`echo "import os; print os.path.realpath('$1')" | python`

uname=`uname -s`
if [ $uname = "Darwin" ]; then
    libsuffix=".dylib"
else
    libsuffix=".so"
fi

conf=`cat $root/conf/httpd.conf | grep "# Generated by: httpd-conf"`
host=`echo $conf | awk '{ print $6 }'`

sslconf=`cat $root/conf/httpd.conf | grep "# Generated by: httpd-ssl-conf"`
if [ "$sslconf" = "" ]; then
    sslsuffix=""
else
    sslsuffix="-ssl"
fi

if [ "$2" = "" ]; then
    providers="file"
else
    providers="file $2"
fi

if [ "$3" = "" ]; then
    pw=`cat $root/cert/ca.key | head -2 | tail -1`
else
    pw="$3"
fi

# Configure HTTPD mod_tuscany_openauth module
cat >>$root/conf/modules.conf <<EOF
# Generated by: open-auth-conf $*
# Load support for Open authentication
LoadModule mod_tuscany_openauth $here/libmod_tuscany_openauth$libsuffix

EOF

# Configure session crypto
cat >>$root/conf/httpd.conf <<EOF
# Configure session crypto
SessionCryptoPassphrase $pw
SessionCryptoDriver openssl

EOF

# Disallow public access to server resources
cat >$root/conf/noauth$sslsuffix.conf <<EOF
# Generated by: open-auth-conf $*
# Disallow public access to server resources

EOF

# Generate form authentication configuration
cat >>$root/conf/locauth$sslsuffix.conf <<EOF
# Generated by: open-auth-conf $*
# Enable Tuscany open authentication
<Location />
AuthType Open
AuthName "$host"
AuthOpenAuthProvider socache $providers
AuthnCacheProvideFor $providers
AuthnCacheContext /
AuthOpenAuthLoginPage /login/
Session On
SessionMaxAge 0
AuthOpenAuth On
Require valid-user
</Location>

# Use HTTPD form-based authentication
<Location /login/dologin>
SetHandler form-login-handler
AuthType Form
AuthName "$host"
AuthFormProvider socache $providers
AuthFormLoginRequiredLocation /login/?openauth_attempt=1
Session On
Require valid-user
</Location>

<Location /logout/dologout>
SetHandler mod_tuscany_openauth_logout
AuthType Open
AuthName "$host"
Session On
Require valid-user
</Location>

EOF

cat >>$root/conf/pubauth$sslsuffix.conf <<EOF
# Generated by: open-auth-conf $*
# Enable Tuscany open authentication
<Location /login/dologin>
Session On
</Location>
<Location /logout/dologout>
Session On
</Location>

EOF