###
# Copyright (c) 2021, Pedro de Oliveira
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#   * Redistributions of source code must retain the above copyright notice,
#     this list of conditions, and the following disclaimer.
#   * Redistributions in binary form must reproduce the above copyright notice,
#     this list of conditions, and the following disclaimer in the
#     documentation and/or other materials provided with the distribution.
#   * Neither the name of the author of this software nor the name of
#     contributors to this software may be used to endorse or promote products
#     derived from this software without specific prior written consent.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.

###

from supybot import utils, plugins, ircutils, callbacks
from supybot.commands import *
try:
    from supybot.i18n import PluginInternationalization
    _ = PluginInternationalization('CVE')
except ImportError:
    # Placeholder that allows to run the plugin on a bot
    # without the i18n module
    _ = lambda x: x
import json
import re
import requests


class CVE(callbacks.Plugin):
    """Client to CVE."""
    threaded = True

    def info(self, irc, msg, args, cve):
        """<cve>

        Returns information about a specific CVE.
        """
        URL = "https://cve.circl.lu/api/cve/{}".format(cve.group(0))
        response = requests.get(URL)
        if response.content == b"null":
            irc.error(_('Invalid CVE format.'), prefixNick=False)
            return

        item = json.loads(response.content)
        output = "[{}] {} - {}".format(item['Modified'], item['id'], item['summary'])
        irc.reply(output, prefixNick=False)
    _cve = re.compile(r"^CVE-\d{4}-\d{4,6}$")
    info = wrap(info, [
        ('matches', _cve, _('Invalid CVE format.'))])

    def latest(self, irc, msg, args, limit):
        """<limit>

        Returns the latest <limit> CVE. Default is 3. Max is 5.
        """
        URL = "https://cve.circl.lu/api/last"
        response = requests.get(URL)
        results = json.loads(response.content)

        if limit > 5:
            limit = 5
        count = 0

        output = ""

        for item in results:
            if count >= limit:
                break
            if output != "":
                output += " || "
            output += "[{}] {} - {}{}".format(item['Modified'], item['id'], item['summary'][:65].strip(), u"…")
            count += 1

        irc.reply(output, prefixNick=False)
    latest = wrap(latest, [optional('int', default=3)])


Class = CVE


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