#!/usr/bin/bash

set -euxo pipefail

export IRONIC_REVERSE_PROXY_SETUP=${IRONIC_REVERSE_PROXY_SETUP:-false}

# CUSTOM_CONFIG_DIR is also managed in the ironic-common.sh, in order to
# keep auth-common and ironic-common separate (to stay consistent with the
# architecture) part of the ironic-common logic had to be duplicated
CUSTOM_CONFIG_DIR="${CUSTOM_CONFIG_DIR:-/conf}"
IRONIC_CONF_DIR="${CUSTOM_CONFIG_DIR}/ironic"

# Backward compatibility
if [[ "${IRONIC_DEPLOYMENT:-}" == "Conductor" ]]; then
    export IRONIC_EXPOSE_JSON_RPC=true
else
    export IRONIC_EXPOSE_JSON_RPC="${IRONIC_EXPOSE_JSON_RPC:-false}"
fi

IRONIC_HTPASSWD_FILE="${IRONIC_CONF_DIR}/htpasswd"
export IRONIC_RPC_HTPASSWD_FILE="${IRONIC_HTPASSWD_FILE}-rpc"
if [[ -f "/auth/ironic/htpasswd" ]]; then
    IRONIC_HTPASSWD=$(</auth/ironic/htpasswd)
fi
if [[ -f "/auth/ironic-rpc/htpasswd" ]]; then
    IRONIC_RPC_HTPASSWD=$(</auth/ironic-rpc/htpasswd)
fi
export IRONIC_HTPASSWD=${IRONIC_HTPASSWD:-${HTTP_BASIC_HTPASSWD:-}}
export IRONIC_RPC_HTPASSWD=${IRONIC_RPC_HTPASSWD:-${IRONIC_HTPASSWD}}

if [[ -n "${MARIADB_PASSWORD:-}" ]]; then
    echo "WARNING: passing MARIADB_PASSWORD is deprecated, mount a secret under /auth/mariadb instead"
elif [[ -f /auth/mariadb/password ]]; then
    MARIADB_PASSWORD=$(</auth/mariadb/password)
fi

if [[ -z "${MARIADB_USER:-}" ]] && [[ -f /auth/mariadb/username ]]; then
    MARIADB_USER=$(</auth/mariadb/username)
fi

IRONIC_CONFIG="${IRONIC_CONF_DIR}/ironic.conf"

configure_json_rpc_auth()
{
    if [[ "${IRONIC_EXPOSE_JSON_RPC}" != "true" ]]; then
        return
    fi

    local auth_config_file="/auth/ironic-rpc/auth-config"
    local username_file="/auth/ironic-rpc/username"
    local password_file="/auth/ironic-rpc/password"
    if [[ -f "${username_file}" ]] && [[ -f "${password_file}" ]]; then
        crudini --set "${IRONIC_CONFIG}" json_rpc username "$(<${username_file})"
        set +x
        crudini --set "${IRONIC_CONFIG}" json_rpc password "$(<${password_file})"
        set -x
    elif [[ -f "${auth_config_file}" ]]; then
        echo "WARNING: using auth-config is deprecated, mount a secret directly"
        # Merge configurations in the "auth" directory into the default ironic configuration file
        crudini --merge "${IRONIC_CONFIG}" < "${auth_config_file}"
    else
        echo "FATAL: no client-side credentials provided for JSON RPC"
        echo "HINT: mount a secret with username and password fields under /auth/ironic-rpc"
        exit 1
    fi

    if [[ -z "${IRONIC_RPC_HTPASSWD}" ]]; then
        if [[ -f "${username_file}" ]] && [[ -f "${password_file}" ]]; then
            htpasswd -c -i -B "${IRONIC_RPC_HTPASSWD_FILE}" "$(<${username_file})" <"${password_file}"
        else
            echo "FATAL: enabling JSON RPC requires authentication"
            echo "HINT: mount a secret with either username and password or htpasswd under /auth/ironic-rpc"
            exit 1
        fi
    else
        printf "%s\n" "${IRONIC_RPC_HTPASSWD}" > "${IRONIC_RPC_HTPASSWD_FILE}"
    fi
}

configure_ironic_auth()
{
    # Configure HTTP basic auth for API server
    if [[ -n "${IRONIC_HTPASSWD}" ]]; then
        printf "%s\n" "${IRONIC_HTPASSWD}" > "${IRONIC_HTPASSWD_FILE}"
        if [[ "${IRONIC_REVERSE_PROXY_SETUP}" == "false" ]]; then
            crudini --set "${IRONIC_CONFIG}" DEFAULT auth_strategy http_basic
            crudini --set "${IRONIC_CONFIG}" DEFAULT http_basic_auth_user_file "${IRONIC_HTPASSWD_FILE}"
        fi
    fi
}

write_htpasswd_files()
{
    if [[ -n "${IRONIC_HTPASSWD:-}" ]]; then
        printf "%s\n" "${IRONIC_HTPASSWD}" > "${IRONIC_HTPASSWD_FILE}"
    fi
}