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# -*- coding: utf8 -*-
# ============LICENSE_START=======================================================
# org.onap.vvp/validation-scripts
# ===================================================================
# Copyright © 2017 AT&T Intellectual Property. All rights reserved.
# ===================================================================
#
# Unless otherwise specified, all software contained herein is licensed
# under the Apache License, Version 2.0 (the "License");
# you may not use this software 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.
#
#
#
# Unless otherwise specified, all documentation contained herein is licensed
# under the Creative Commons License, Attribution 4.0 Intl. (the "License");
# you may not use this documentation except in compliance with the License.
# You may obtain a copy of the License at
#
#             https://creativecommons.org/licenses/by/4.0/
#
# Unless required by applicable law or agreed to in writing, documentation
# 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.
#
# ============LICENSE_END============================================
#
#

from .network_roles import get_network_role_from_port
from .vm_types import get_vm_type_for_nova_server
import re


def is_valid_ip_address(
    ip_address, vm_type, network_role, port_property, parameter_type
):
    """
    Check the ip_address to make sure it is properly formatted and
    also contains {vm_type} and {network_role}
    """

    allowed_formats = [
        [
            "allowed_address_pairs",
            "string",
            "internal",
            re.compile(r"(.+?)_int_(.+?)_floating_v6_ip"),
        ],
        [
            "allowed_address_pairs",
            "string",
            "internal",
            re.compile(r"(.+?)_int_(.+?)_floating_ip"),
        ],
        [
            "allowed_address_pairs",
            "string",
            "external",
            re.compile(r"(.+?)_floating_v6_ip"),
        ],
        [
            "allowed_address_pairs",
            "string",
            "external",
            re.compile(r"(.+?)_floating_ip"),
        ],
        [
            "allowed_address_pairs",
            "string",
            "internal",
            re.compile(r"(.+?)_int_(.+?)_v6_ip_\d+"),
        ],
        [
            "allowed_address_pairs",
            "string",
            "internal",
            re.compile(r"(.+?)_int_(.+?)_ip_\d+"),
        ],
        ["allowed_address_pairs", "string", "external", re.compile(r"(.+?)_v6_ip_\d+")],
        ["allowed_address_pairs", "string", "external", re.compile(r"(.+?)_ip_\d+")],
        [
            "allowed_address_pairs",
            "comma_delimited_list",
            "internal",
            re.compile(r"(.+?)_int_(.+?)_v6_ips"),
        ],
        [
            "allowed_address_pairs",
            "comma_delimited_list",
            "internal",
            re.compile(r"(.+?)_int_(.+?)_ips"),
        ],
        [
            "allowed_address_pairs",
            "comma_delimited_list",
            "external",
            re.compile(r"(.+?)_v6_ips"),
        ],
        [
            "allowed_address_pairs",
            "comma_delimited_list",
            "external",
            re.compile(r"(.+?)_ips"),
        ],
        ["fixed_ips", "string", "internal", re.compile(r"(.+?)_int_(.+?)_v6_ip_\d+")],
        ["fixed_ips", "string", "internal", re.compile(r"(.+?)_int_(.+?)_ip_\d+")],
        ["fixed_ips", "string", "external", re.compile(r"(.+?)_v6_ip_\d+")],
        ["fixed_ips", "string", "external", re.compile(r"(.+?)_ip_\d+")],
        [
            "fixed_ips",
            "comma_delimited_list",
            "internal",
            re.compile(r"(.+?)_int_(.+?)_v6_ips"),
        ],
        [
            "fixed_ips",
            "comma_delimited_list",
            "internal",
            re.compile(r"(.+?)_int_(.+?)_ips"),
        ],
        ["fixed_ips", "comma_delimited_list", "external", re.compile(r"(.+?)_v6_ips")],
        ["fixed_ips", "comma_delimited_list", "external", re.compile(r"(.+?)_ips")],
    ]

    for v3 in allowed_formats:
        if v3[1] != parameter_type:
            continue
        if v3[0] != port_property:
            continue
        # check if pattern matches
        m = v3[3].match(ip_address)
        if m:
            if v3[2] == "internal" and len(m.groups()) > 1:
                return m.group(1) == vm_type and m.group(2) == network_role
            elif v3[2] == "external" and len(m.groups()) > 0:
                return m.group(1) == vm_type + "_" + network_role

    return False


def get_invalid_ip_addresses(resources, port_property, parameters):
    """
    Get a list of valid ip addresses for a heat resources section
    """
    invalid_ip_addresses = []

    for k, v in resources.items():
        if not isinstance(v, dict):
            continue
        if "type" not in v:
            continue
        if v["type"] not in "OS::Nova::Server":
            continue
        if "properties" not in v:
            continue
        if "networks" not in v["properties"]:
            continue

        port_resource = None

        vm_type = get_vm_type_for_nova_server(v)
        if not vm_type:
            continue

        # get all ports associated with the nova server
        properties = v["properties"]
        for network in properties["networks"]:
            for k3, v3 in network.items():
                if k3 != "port":
                    continue
                if not isinstance(v3, dict):
                    continue

                if "get_resource" in v3:
                    port_id = v3["get_resource"]
                    if not resources[port_id]:
                        continue
                    port_resource = resources[port_id]
                else:
                    continue

                network_role = get_network_role_from_port(port_resource)
                if not network_role:
                    continue

                for k1, v1 in port_resource["properties"].items():
                    if k1 != port_property:
                        continue
                    for v2 in v1:
                        if "ip_address" not in v2:
                            continue
                        if "get_param" not in v2["ip_address"]:
                            continue
                        ip_address = v2["ip_address"]["get_param"]

                        if isinstance(ip_address, list):
                            ip_address = ip_address[0]

                        if ip_address not in parameters:
                            continue

                        parameter_type = parameters[ip_address].get("type")
                        if not parameter_type:
                            continue

                        valid_ip_address = is_valid_ip_address(
                            ip_address,
                            vm_type,
                            network_role,
                            port_property,
                            parameter_type,
                        )

                        if not valid_ip_address:
                            invalid_ip_addresses.append(ip_address)

    return invalid_ip_addresses


def get_list_of_ports_attached_to_nova_server(nova_server):
    networks_list = nova_server.get("properties", {}).get("networks")

    port_ids = []
    if networks_list:
        for network in networks_list:
            network_prop = network.get("port")
            if network_prop:
                pid = network_prop.get("get_param")
                if not pid:
                    pid = network_prop.get("get_resource")
                port_ids.append(pid)

    return port_ids