Chapter 6. The configure-federation file

#!/bin/sh


prog_name=`basename $0`
action=
dry_run=0
verbose=0

base_dir=$(pwd)
stage_dir="${base_dir}/fed_deployment"

mellon_root="/v3"
mellon_endpoint="mellon"
mellon_app_name="v3"

overcloud_deploy_script="overcloud_deploy.sh"
overcloudrc_file="./overcloudrc"

function cmd_template {
    local status=0
    local cmd="$1"
    if [ $verbose -ne 0 -o $dry_run -ne 0 ]; then
        echo $cmd
    fi
    if [ $dry_run -ne 0 ]; then
        return $status
    fi

    $cmd
    status=$?
    if [ $status -ne 0 ]; then
        (>&2 echo -e "ERROR cmd \"$cmd\" failed\nstatus = $status")
    fi
    return $status
}

function cmds_template {
    local return_status=0
    declare -a cmds=(
        "date"
        "ls xxx"
        "head $0"
    )

    if [ $dry_run -ne 0 ]; then
        for cmd in "${cmds[@]}"; do
            echo $cmd
        done
    else
        for cmd in "${cmds[@]}"; do
            if [ $verbose -ne 0 ]; then
                echo $cmd
            fi
            $cmd
            status=$?
            if [ $status -ne 0 ]; then
                (>&2 echo -e "ERROR cmd \"$cmd\" failed\nstatus = $status")
                return_status=$status
            fi
        done
    fi
    return $return_status
}

function show_variables {
    echo "base_dir: $base_dir"
    echo "stage_dir: $stage_dir"
    echo "config_tar_filename: $config_tar_filename"
    echo "config_tar_pathname: $config_tar_pathname"
    echo "overcloud_deploy_script: $overcloud_deploy_script"
    echo "overcloudrc_file: $overcloudrc_file"

    echo "puppet_override_apache_pathname: $puppet_override_apache_pathname"
    echo "puppet_override_keystone_pathname: $puppet_override_keystone_pathname"

    echo

    echo "FED_RHSSO_URL: $FED_RHSSO_URL"
    echo "FED_RHSSO_ADMIN_PASSWORD: $FED_RHSSO_ADMIN_PASSWORD"
    echo "FED_RHSSO_REALM: $FED_RHSSO_REALM"

    echo

    echo "FED_KEYSTONE_HOST: $FED_KEYSTONE_HOST"
    echo "FED_KEYSTONE_HTTPS_PORT: $FED_KEYSTONE_HTTPS_PORT"
    echo "mellon_http_url: $mellon_http_url"
    echo "mellon_root: $mellon_root"
    echo "mellon_endpoint: $mellon_endpoint"
    echo "mellon_app_name: $mellon_app_name"
    echo "mellon_endpoint_path: $mellon_endpoint_path"
    echo "mellon_entity_id: $mellon_entity_id"

    echo

    echo "FED_OPENSTACK_IDP_NAME: $FED_OPENSTACK_IDP_NAME"
    echo "openstack_mapping_pathname: $openstack_mapping_pathname"
    echo "FED_OPENSTACK_MAPPING_NAME: $FED_OPENSTACK_MAPPING_NAME"

    echo

    echo "idp_metadata_filename: $idp_metadata_filename"
    echo "mellon_httpd_config_filename: $mellon_httpd_config_filename"
}

function initialize {
    local return_status=0
    declare -a cmds=(
        "mkdir -p $stage_dir"
    )

    if [ $dry_run -ne 0 ]; then
        for cmd in "${cmds[@]}"; do
            echo $cmd
        done
    else
        for cmd in "${cmds[@]}"; do
            if [ $verbose -ne 0 ]; then
                echo $cmd
            fi
            $cmd
            status=$?
            if [ $status -ne 0 ]; then
                (>&2 echo -e "ERROR cmd \"$cmd\" failed\nstatus = $status")
                return_status=$status
            fi
        done
    fi
    return $return_status
}

function copy_helper_to_controller {
    local status=0
    local controller=${1:-"controller-0"}
    local cmd="scp configure-federation fed_variables heat-admin@${controller}:/home/heat-admin"
    if [ $verbose -ne 0 -o $dry_run -ne 0 ]; then
        echo $cmd
    fi
    if [ $dry_run -ne 0 ]; then
        return $status
    fi

    $cmd
    status=$?
    if [ $status -ne 0 ]; then
        (>&2 echo -e "ERROR cmd \"$cmd\" failed\nstatus = $status")
    fi
    return $status
}

function install_mod_auth_mellon {
    local status=0
    local cmd="sudo yum -y install mod_auth_mellon"

    if [ $verbose -ne 0 -o $dry_run -ne 0 ]; then
        echo $cmd
    fi
    if [ $dry_run -ne 0 ]; then
        return $status
    fi

    $cmd
    status=$?
    if [ $status -ne 0 ]; then
        (>&2 echo -e "ERROR cmd \"$cmd\" failed\nstatus = $status")
    fi
    return $status
}

function create_ipa_service_account {
    # Note, after setting up the service account it can be tested
    # by performing a user search like this:
    # ldapsearch -H $ldap_url -x -D "$service_dn" -w "$FED_IPA_RHSSO_SERVICE_PASSWD" -b "cn=users,cn=accounts,$FED_IPA_BASE_DN"

    local status=0
    local ldap_url="ldaps://$FED_IPA_HOST"
    local dir_mgr_dn="cn=Directory Manager"
    local service_name="rhsso"
    local service_dn="uid=$service_name,cn=sysaccounts,cn=etc,$FED_IPA_BASE_DN"
    local cmd="ldapmodify -H \"$ldap_url\" -x -D \"$dir_mgr_dn\" -w \"$FED_IPA_ADMIN_PASSWD\""

    read -r -d '' contents <<EOF
dn: $service_dn
changetype: add
objectclass: account
objectclass: simplesecurityobject
uid: $service_name
userPassword: $FED_IPA_RHSSO_SERVICE_PASSWD
passwordExpirationTime: 20380119031407Z
nsIdleTimeout: 0

EOF

    if [ $verbose -ne 0 -o $dry_run -ne 0 ]; then
        echo $cmd
        echo -e "$contents"
    fi
    if [ $dry_run -ne 0 ]; then
        return $status
    fi

    sh <<< "$cmd <<< \"$contents\""
    status=$?
    if [ $status -ne 0 ]; then
        (>&2 echo -e "ERROR cmd \"$cmd\" failed\nstatus = $status")
    fi

    return $status
}



function client_install {
    local status=0
    local cmd_client_install="sudo yum -y install keycloak-httpd-client-install"
    local cmd="sudo keycloak-httpd-client-install \
   --client-originate-method registration \
   --mellon-https-port $FED_KEYSTONE_HTTPS_PORT \
   --mellon-hostname $FED_KEYSTONE_HOST  \
   --mellon-root $mellon_root \
   --keycloak-server-url $FED_RHSSO_URL  \
   --keycloak-admin-password  $FED_RHSSO_ADMIN_PASSWORD \
   --app-name $mellon_app_name \
   --keycloak-realm $FED_RHSSO_REALM \
   -l "/v3/auth/OS-FEDERATION/websso/mapped" \
   -l "/v3/auth/OS-FEDERATION/identity_providers/rhsso/protocols/mapped/websso" \
   -l "/v3/OS-FEDERATION/identity_providers/rhsso/protocols/mapped/auth"
"
    if [ $verbose -ne 0 -o $dry_run -ne 0 ]; then
        echo $cmd_client_install
        echo $cmd
    fi
    if [ $dry_run -ne 0 ]; then
        return $status
    fi

    $cmd_client_install
    status=$?
    if [ $status -ne 0 ]; then
        (>&2 echo -e "ERROR cmd \"$cmd_client_install\" failed\nstatus = $status")
    else
        $cmd
        status=$?
        if [ $status -ne 0 ]; then
            (>&2 echo -e "ERROR cmd \"$cmd\" failed\nstatus = $status")
        fi
    fi
    return $status
}

function create_sp_archive {
    # Note, we put the exclude patterns in a file because it is
    # insanely difficult to put --exclude patttern in the $cmd shell
    # variable and get the final quoting correct.

    local status=0
    local cmd="tar -cvzf $config_tar_pathname --exclude-from $stage_dir/tar_excludes /etc/httpd/saml2 /etc/httpd/conf.d/$mellon_httpd_config_filename"
    if [ $verbose -ne 0 -o $dry_run -ne 0 ]; then
        echo $cmd
    fi
    if [ $dry_run -ne 0 ]; then
        return $status
    fi

    cat <<'EOF' > $stage_dir/tar_excludes
*.orig
*~
EOF

    $cmd
    status=$?
    if [ $status -ne 0 ]; then
        (>&2 echo -e "ERROR cmd \"$cmd\" failed\nstatus = $status")
    fi
    return $status
}

function fetch_sp_archive {
    local return_status=0
    declare -a cmds=(
        "scp heat-admin@controller-0:/home/heat-admin/fed_deployment/$config_tar_filename $stage_dir"
        "tar -C $stage_dir -xvf $config_tar_pathname"
    )

    if [ $dry_run -ne 0 ]; then
        for cmd in "${cmds[@]}"; do
            echo $cmd
        done
    else
        for cmd in "${cmds[@]}"; do
            if [ $verbose -ne 0 ]; then
                echo $cmd
            fi
            $cmd
            status=$?
            if [ $status -ne 0 ]; then
                (>&2 echo -e "ERROR cmd \"$cmd\" failed\nstatus = $status")
                return_status=$status
            fi
        done
    fi
    return $return_status
}

function deploy_mellon_configuration {
    local status=0
    local cmd="upload-swift-artifacts -f $config_tar_pathname"
    if [ $verbose -ne 0 -o $dry_run -ne 0 ]; then
        echo $cmd
    fi
    if [ $dry_run -ne 0 ]; then
        return $status
    fi

    $cmd
    status=$?
    if [ $status -ne 0 ]; then
        (>&2 echo -e "ERROR cmd \"$cmd\" failed\nstatus = $status")
    fi
    return $status
}

function idp_entity_id {
    local metadata_file=${1:-$idp_metadata_filename}

    # Extract the entitID from the metadata file, should really be parsed
    # with an XML xpath but a simple string match is probably OK

    entity_id=`sed -rne 's/^.*entityID="([^"]*)".*$/\1/p' ${metadata_file}`
    status=$?
    if [ $status -ne 0 -o "$entity_id"x = "x" ]; then
        (>&2 echo -e "ERROR search for entityID in ${metadata_file} failed\nstatus = $status")
        return 1
    fi
    echo $entity_id
    return 0
}

function append_deploy_script {
    local status=0
    local deploy_script=$1
    local extra_line=$2
    local count

    count=$(grep -c -e "$extra_line" $deploy_script)
    if [ $count -eq 1 ]; then
        echo -e "SKIP appending:\n$extra_line"
        echo "already present in $deploy_script"
        return $status
    elif [ $count -gt 1 ]; then
        status=1
        (>&2 echo -e "ERROR multiple copies of line in  ${deploy_script}\nstatus = $status\nline=$extra_line")
        return $status
    fi

    if [ $verbose -ne 0 -o $dry_run -ne 0 ]; then
        echo "appending $deploy_script with:"
        echo -e $extra_line
    fi
    if [ $dry_run -ne 0 ]; then
        return $status
    fi

    # insert line after last -e line already in script
    #
    # This is not easy with sed, we'll use tac and awk instead.  Here
    # is how this works: The logic is easier if you insert before the
    # first line rather than trying to find the last line and insert
    # after it. We use tac to reverse the lines in the file. Then the
    # awk script looks for the candidate line. If found it outputs the
    # line we're adding, sets a flag (p) to indicate it's already been
    # printed. The "; 1" pattern always output the input line. Then we
    # run the output through tac again to set things back in the
    # original order.

    local tmp_file=$(mktemp)

    tac $deploy_script | awk "!p && /^-e/{print \"${extra_line} \\\\\"; p=1}; 1" | tac > $tmp_file

    count=$(grep -c -e "${extra_line}" $tmp_file)
    if [ $count -ne 1 ]; then
        status=1
    fi
    if [ $status -ne 0 ]; then
        rm $tmp_file
        (>&2 echo -e "ERROR failed to append ${deploy_script}\nstatus = $status\nline=$extra_line")
    else
        mv $tmp_file $deploy_script
    fi


    return $status
}

function puppet_override_apache {
    local status=0
    local pathname=${1:-$puppet_override_apache_pathname}
    local deploy_cmd="-e $pathname"

    read -r -d '' contents <<'EOF'
parameter_defaults:
  ControllerExtraConfig:
    apache::purge_configs: false
EOF

    if [ $verbose -ne 0 -o $dry_run -ne 0 ]; then
        echo "writing pathname = $pathname with contents"
        echo -e "$contents"
    fi
    if [ $dry_run -ne 0 ]; then
        return $status
    fi

    echo -e "$contents" > $pathname
    status=$?
    if [ $status -ne 0 ]; then
        (>&2 echo -e "ERROR failed to write ${pathname}\nstatus = $status")
    fi

    append_deploy_script $overcloud_deploy_script "$deploy_cmd"
    status=$?

    return $status
}

function puppet_override_keystone {
    local status=0
    local pathname=${1:-$puppet_override_keystone_pathname}
    local deploy_cmd="-e $pathname"

    read -r -d '' contents <<EOF
parameter_defaults:
  controllerExtraConfig:
    keystone::using_domain_config: true
    keystone::config::keystone_config:
      identity/domain_configurations_from_database:
        value: true
      auth/methods:
        value: external,password,token,oauth1,mapped
      federation/trusted_dashboard:
        value: https://$FED_KEYSTONE_HOST/dashboard/auth/websso/
      federation/sso_callback_template:
        value: /etc/keystone/sso_callback_template.html
      federation/remote_id_attribute:
        value: MELLON_IDP

EOF

    if [ $verbose -ne 0 -o $dry_run -ne 0 ]; then
        echo "writing pathname = $pathname with contents"
        echo -e "$contents"
    fi
    if [ $dry_run -ne 0 ]; then
        return $status
    fi

    echo -e "$contents" > $pathname
    status=$?
    if [ $status -ne 0 ]; then
        (>&2 echo -e "ERROR failed to write ${pathname}\nstatus = $status")
    fi

    append_deploy_script $overcloud_deploy_script "$deploy_cmd"
    status=$?

    return $status
}

function create_federated_resources {
    # follow example in Keystone federation documentation
    # http://docs.openstack.org/developer/keystone/federation/federated_identity.html#create-keystone-groups-and-assign-roles
    local return_status=0
    declare -a cmds=(
    "openstack domain create federated_domain"
    "openstack project create  --domain federated_domain federated_project"
    "openstack group create federated_users --domain federated_domain"
    "openstack role add --group federated_users --group-domain federated_domain --domain federated_domain _member_"
    "openstack role add --group federated_users --project federated_project Member"
    )

    if [ $dry_run -ne 0 ]; then
        for cmd in "${cmds[@]}"; do
            echo $cmd
        done
    else
        for cmd in "${cmds[@]}"; do
            if [ $verbose -ne 0 ]; then
                echo $cmd
            fi
            $cmd
            status=$?
            if [ $status -ne 0 ]; then
                (>&2 echo -e "ERROR cmd \"$cmd\" failed\nstatus = $status")
                return_status=$status
            fi
        done
    fi
    return $return_status
}

function create_mapping {
    # Matches documentation
    # http://docs.openstack.org/developer/keystone/federation/federated_identity.html#create-keystone-groups-and-assign-roles
    local status=0
    local pathname=${1:-$openstack_mapping_pathname}

    read -r -d '' contents <<'EOF'
[
    {
        "local": [
            {
                "user": {
                    "name": "{0}"
                },
                "group": {
                    "domain": {
                        "name": "federated_domain"
                    },
                    "name": "federated_users"
                }
            }
        ],
        "remote": [
            {
                "type": "MELLON_NAME_ID"
            },
            {
                "type": "MELLON_groups",
                "any_one_of": ["openstack-users"]
            }
        ]
    }
]
EOF

    if [ $verbose -ne 0 -o $dry_run -ne 0 ]; then
        echo "writing pathname = $pathname with contents"
        echo -e "$contents"
    fi
    if [ $dry_run -ne 0 ]; then
        return $status
    fi


    echo -e "$contents" > $pathname
    status=$?
    if [ $status -ne 0 ]; then
        (>&2 echo -e "ERROR failed to write ${pathname}\nstatus = $status")
    fi

    return $status
}

function create_v3_rcfile {
    local status=0
    local input_file=${1:-$overcloudrc_file}
    local output_file="${input_file}.v3"

    source $input_file
    #clear the old environment
    NEW_OS_AUTH_URL=`echo $OS_AUTH_URL | sed 's!v2.0!v3!'`

    read -r -d '' contents <<EOF
for key in \$( set | sed 's!=.*!!g'  | grep -E '^OS_') ; do unset $key ; done
export OS_AUTH_URL=$NEW_OS_AUTH_URL
export OS_USERNAME=$OS_USERNAME
export OS_PASSWORD=$OS_PASSWORD
export OS_USER_DOMAIN_NAME=Default
export OS_PROJECT_DOMAIN_NAME=Default
export OS_PROJECT_NAME=$OS_TENANT_NAME
export OS_IDENTITY_API_VERSION=3
EOF

    if [ $verbose -ne 0 -o $dry_run -ne 0 ]; then
        echo "writeing output_file = $output_file with contents:"
        echo -e "$contents"
    fi
    if [ $dry_run -ne 0 ]; then
        return $status
    fi

    echo -e "$contents" > $output_file
    status=$?
    if [ $status -ne 0 ]; then
        (>&2 echo -e "ERROR failed to write ${output_file}\nstatus = $status")
    fi

    return $status
}

function openstack_create_idp {
    local status=0
    local metadata_file="$stage_dir/etc/httpd/saml2/$idp_metadata_filename"
    local entity_id
    entity_id=$(idp_entity_id $metadata_file)
    status=$?
    if [ $status -ne 0 ]; then
        return $status
    fi

    local cmd="openstack identity provider create --remote-id $entity_id $FED_OPENSTACK_IDP_NAME"

    if [ $verbose -ne 0 -o $dry_run -ne 0 ]; then
        echo $cmd
    fi
    if [ $dry_run -ne 0 ]; then
        return $status
    fi

    $cmd
    status=$?
    if [ $status -ne 0 ]; then
        (>&2 echo -e "ERROR cmd \"$cmd\" failed\nstatus = $status")
    fi
    return $status
}

function openstack_create_mapping {
    local status=0
    local mapping_file=${1:-$openstack_mapping_pathname}
    local mapping_name=${2:-$FED_OPENSTACK_MAPPING_NAME}
    cmd="openstack mapping create --rules $mapping_file $mapping_name"

    if [ $verbose -ne 0 -o $dry_run -ne 0 ]; then
        echo $cmd
    fi
    if [ $dry_run -ne 0 ]; then
        return $status
    fi

    $cmd
    status=$?
    if [ $status -ne 0 ]; then
        (>&2 echo -e "ERROR cmd \"$cmd\" failed\nstatus = $status")
    fi
    return $status
}

function openstack_create_protocol {
    local status=0
    local idp_name=${1:-$FED_OPENSTACK_IDP_NAME}
    local mapping_name=${2:-$FED_OPENSTACK_MAPPING_NAME}
    cmd="openstack federation protocol create --identity-provider $idp_name --mapping $mapping_name mapped"

    if [ $verbose -ne 0 -o $dry_run -ne 0 ]; then
        echo $cmd
    fi
    if [ $dry_run -ne 0 ]; then
        return $status
    fi

    $cmd
    status=$?
    if [ $status -ne 0 ]; then
        (>&2 echo -e "ERROR cmd \"$cmd\" failed\nstatus = $status")
    fi
    return $status
}

function usage {
cat <<EOF
$prog_name action

-h --help        print usage
-n --dry-run     dry run, just print computed command
-v --verbose     be chatty

action may be one of:

show-variables
initialize
copy-helper-to-controller
install-mod-auth-mellon
create-ipa-service-account
client-install
create-sp-archive
fetch-sp-archive
deploy-mellon-configuration
puppet-override-apache
puppet-override-keystone
create-federated-resources
create-mapping
create-v3-rcfile
openstack-create-idp
openstack-create-mapping
openstack-create-protocol

EOF
}

#-----------------------------------------------------------------------------
# options may be followed by one colon to indicate they have a required argument
if ! options=$(getopt -o hnv -l help,dry-run,verbose -- "$@")
then
    # something went wrong, getopt will put out an error message for us
    exit 1
fi

eval set -- "$options"

while [ $# -gt 0 ]
do
    case $1 in
    -h|--help) usage; exit 1 ;;
    -n|--dry-run) dry_run=1 ;;
    -v|--verbose) verbose=1 ;;
    # for options with required arguments, an additional shift is required
    (--) shift; break;;
    (-*) echo "$0: error - unrecognized option $1" 1>&2; exit 1;;
    (*) break;;
    esac
    shift
done
#-----------------------------------------------------------------------------
source ./fed_variables


# Strip leading and trailing space and slash from these variables
mellon_root=`echo ${mellon_root} | perl -pe 's!^[ /]*(.*?)[ /]*$!\1!'`
mellon_endpoint=`echo ${mellon_endpoint} | perl -pe 's!^[ /]*(.*?)[ /]*$!\1!'`

mellon_root="/${mellon_root}"

mellon_endpoint_path="${mellon_root}/${mellon_endpoint}"
mellon_http_url="https://${FED_KEYSTONE_HOST}:${FED_KEYSTONE_HTTPS_PORT}"
mellon_entity_id="${mellon_http_url}${mellon_endpoint_path}/metadata"

openstack_mapping_pathname="${stage_dir}/mapping_${FED_OPENSTACK_IDP_NAME}_saml2.json"
idp_metadata_filename="${mellon_app_name}_keycloak_${FED_RHSSO_REALM}_idp_metadata.xml"
mellon_httpd_config_filename="${mellon_app_name}_mellon_keycloak_${FED_RHSSO_REALM}.conf"
config_tar_filename="rhsso_config.tar.gz"
config_tar_pathname="${stage_dir}/${config_tar_filename}"
puppet_override_apache_pathname="${stage_dir}/puppet_override_apache.yaml"
puppet_override_keystone_pathname="${stage_dir}/puppet_override_keystone.yaml"

#-----------------------------------------------------------------------------

if [ $# -lt 1 ]; then
  echo "ERROR: no action specified"
  exit 1
fi
action="$1"; shift

if [ $dry_run -ne 0 ]; then
    echo "Dry Run Enabled!"
fi

case $action in
    show-var*)
        show_variables ;;
    initialize)
        initialize ;;
    copy-helper-to-controller)
        copy_helper_to_controller "$1" ;;
    install-mod-auth-mellon)
        install_mod_auth_mellon ;;
    create-ipa-service-account)
        create_ipa_service_account ;;
    client-install)
        client_install ;;
    create-sp-archive)
        create_sp_archive ;;
    fetch-sp-archive)
        fetch_sp_archive ;;
    deploy-mellon-configuration)
        deploy_mellon_configuration ;;
    create-v3-rcfile)
        create_v3_rcfile "$1" ;;
    puppet-override-apache)
        puppet_override_apache "$1" ;;
    puppet-override-keystone)
        puppet_override_keystone "$1" ;;
    create-federated-resources)
        create_federated_resources ;;
    create-mapping)
        create_mapping "$1" ;;
    openstack-create-idp)
        openstack_create_idp "$1" ;;
    openstack-create-mapping)
        openstack_create_mapping "$1" "$2" ;;
    openstack-create-protocol)
        openstack_create_protocol "$1" "$2" ;;
    *)
        echo "unknown action: $action"
        usage
        exit 1
        ;;
esac