#!/usr/bin/env python3

# Copyright (C) 2009 by Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
# Copyright (C) 2022 by Sen Hastings <sen@phobosdpl.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

import aiohttp
import argparse
import asyncio
import datetime
import fnmatch
import os
from collections import defaultdict
import re
import subprocess
import json
import sys
import time
import gzip
import xml.etree.ElementTree
import requests

brpath = os.path.normpath(os.path.join(os.path.dirname(__file__), "..", ".."))

sys.path.append(os.path.join(brpath, "utils"))
from getdeveloperlib import parse_developers  # noqa: E402

INFRA_RE = re.compile(r"\$\(eval \$\(([a-z-]*)-package\)\)")
URL_RE = re.compile(r"\s*https?://\S*\s*$")
CPEDB_URL = "https://static.nvd.nist.gov/feeds/xml/cpe/dictionary/official-cpe-dictionary_v2.3.xml.gz"

RM_API_STATUS_ERROR = 1
RM_API_STATUS_FOUND_BY_DISTRO = 2
RM_API_STATUS_FOUND_BY_PATTERN = 3
RM_API_STATUS_NOT_FOUND = 4


class Defconfig:
    def __init__(self, name, path):
        self.name = name
        self.path = path
        self.developers = None

    def set_developers(self, developers):
        """
        Fills in the .developers field
        """
        self.developers = [
            developer.name
            for developer in developers
            if developer.hasfile(self.path)
        ]


def get_defconfig_list():
    """
    Builds the list of Buildroot defconfigs, returning a list of Defconfig
    objects.
    """
    return [
        Defconfig(name[:-len('_defconfig')], os.path.join('configs', name))
        for name in os.listdir(os.path.join(brpath, 'configs'))
        if name.endswith('_defconfig')
    ]


class Package:
    all_licenses = dict()
    all_license_files = list()
    all_versions = dict()
    all_ignored_cves = dict()
    all_cpeids = dict()
    # This is the list of all possible checks. Add new checks to this list so
    # a tool that post-processes the json output knows the checks before
    # iterating over the packages.
    status_checks = ['cve', 'developers', 'hash', 'license',
                     'license-files', 'patches', 'pkg-check', 'url', 'version']

    def __init__(self, name, path):
        self.name = name
        self.path = path
        self.pkg_path = os.path.dirname(path)
        # Contains a list of tuple (type, infra), such as ("target",
        # "autotools"). When pkg-stats is run without -c, it contains
        # the list of all infra/type supported by the package. When
        # pkg-stats is run with -c, it contains the list of infra/type
        # used by the current configuration.
        self.infras = None
        self.license = None
        self.has_license = False
        self.has_license_files = False
        self.has_hash = False
        self.patch_files = []
        self.warnings = 0
        self.current_version = None
        self.url = None
        self.url_worker = None
        self.cpeid = None
        self.cves = list()
        self.ignored_cves = list()
        self.unsure_cves = list()
        self.latest_version = {'status': RM_API_STATUS_ERROR, 'version': None, 'id': None}
        self.status = {}

    def pkgvar(self):
        return self.name.upper().replace("-", "_")

    def set_url(self):
        """
        Fills in the .url field
        """
        self.status['url'] = ("warning", "no Config.in")
        pkgdir = os.path.dirname(os.path.join(brpath, self.path))
        for filename in os.listdir(pkgdir):
            if fnmatch.fnmatch(filename, 'Config.*'):
                fp = open(os.path.join(pkgdir, filename), "r")
                for config_line in fp:
                    if URL_RE.match(config_line):
                        self.url = config_line.strip()
                        self.status['url'] = ("ok", "found")
                        fp.close()
                        return
                self.status['url'] = ("error", "missing")
                fp.close()

    @property
    def patch_count(self):
        return len(self.patch_files)

    @property
    def has_valid_infra(self):
        if self.infras is None:
            return False
        return len(self.infras) > 0

    @property
    def is_actual_package(self):
        try:
            if not self.has_valid_infra:
                return False
            if self.infras[0][1] == 'virtual':
                return False
        except IndexError:
            return False
        return True

    def set_infra(self, show_info_js):
        """
        Fills in the .infras field
        """
        # If we're running pkg-stats for a given Buildroot
        # configuration, keep only the type/infra that applies
        if show_info_js:
            keep_host = "host-%s" % self.name in show_info_js
            keep_target = self.name in show_info_js
        # Otherwise, keep all
        else:
            keep_host = True
            keep_target = True

        self.infras = list()
        with open(os.path.join(brpath, self.path), 'r') as f:
            lines = f.readlines()
            for line in lines:
                match = INFRA_RE.match(line)
                if not match:
                    continue
                infra = match.group(1)
                if infra.startswith("host-") and keep_host:
                    self.infras.append(("host", infra[5:]))
                elif keep_target:
                    self.infras.append(("target", infra))

    def set_license(self):
        """
        Fills in the .status['license'] and .status['license-files'] fields
        """
        if not self.is_actual_package:
            self.status['license'] = ("na", "no valid package infra")
            self.status['license-files'] = ("na", "no valid package infra")
            return

        var = self.pkgvar()
        self.status['license'] = ("error", "missing")
        self.status['license-files'] = ("error", "missing")
        if var in self.all_licenses:
            self.license = self.all_licenses[var]
            self.status['license'] = ("ok", "found")
        if var in self.all_license_files:
            self.status['license-files'] = ("ok", "found")

    def set_hash_info(self):
        """
        Fills in the .status['hash'] field
        """
        if not self.is_actual_package:
            self.status['hash'] = ("na", "no valid package infra")
            self.status['hash-license'] = ("na", "no valid package infra")
            return

        hashpath = self.path.replace(".mk", ".hash")
        if os.path.exists(os.path.join(brpath, hashpath)):
            self.status['hash'] = ("ok", "found")
        else:
            self.status['hash'] = ("error", "missing")

    def set_patch_count(self):
        """
        Fills in the .patch_count, .patch_files and .status['patches'] fields
        """
        if not self.is_actual_package:
            self.status['patches'] = ("na", "no valid package infra")
            return

        pkgdir = os.path.dirname(os.path.join(brpath, self.path))
        for subdir, _, _ in os.walk(pkgdir):
            self.patch_files = fnmatch.filter(os.listdir(subdir), '*.patch')

        if self.patch_count == 0:
            self.status['patches'] = ("ok", "no patches")
        elif self.patch_count < 5:
            self.status['patches'] = ("warning", "some patches")
        else:
            self.status['patches'] = ("error", "lots of patches")

    def set_current_version(self):
        """
        Fills in the .current_version field
        """
        var = self.pkgvar()
        if var in self.all_versions:
            self.current_version = self.all_versions[var]

    def set_cpeid(self):
        """
        Fills in the .cpeid field
        """
        var = self.pkgvar()
        if not self.is_actual_package:
            self.status['cpe'] = ("na", "N/A - virtual pkg")
            return
        if not self.current_version:
            self.status['cpe'] = ("na", "no version information available")
            return

        if var in self.all_cpeids:
            self.cpeid = self.all_cpeids[var]
            # Set a preliminary status, it might be overridden by check_package_cpes()
            self.status['cpe'] = ("warning", "not checked against CPE dictionary")
        else:
            self.status['cpe'] = ("error", "no verified CPE identifier")

    def set_check_package_warnings(self):
        """
        Fills in the .warnings and .status['pkg-check'] fields
        """
        cmd = [os.path.join(brpath, "utils/check-package")]
        pkgdir = os.path.dirname(os.path.join(brpath, self.path))
        self.status['pkg-check'] = ("error", "Missing")
        for root, dirs, files in os.walk(pkgdir):
            for f in files:
                if f.endswith(".mk") or f.endswith(".hash") or f == "Config.in" or f == "Config.in.host":
                    cmd.append(os.path.join(root, f))
        o = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate()[1]
        lines = o.splitlines()
        for line in lines:
            m = re.match("^([0-9]*) warnings generated", line.decode())
            if m:
                self.warnings = int(m.group(1))
                if self.warnings == 0:
                    self.status['pkg-check'] = ("ok", "no warnings")
                else:
                    self.status['pkg-check'] = ("error", "{} warnings".format(self.warnings))
                return

    def set_ignored_cves(self):
        """
        Give the list of CVEs ignored by the package
        """
        self.ignored_cves = list(self.all_ignored_cves.get(self.pkgvar(), []))

    def set_developers(self, developers):
        """
        Fills in the .developers and .status['developers'] field
        """
        self.developers = [
            dev.name
            for dev in developers
            if dev.hasfile(self.path)
        ]

        if self.developers:
            self.status['developers'] = ("ok", "{} developers".format(len(self.developers)))
        else:
            self.status['developers'] = ("warning", "no developers")

    def is_status_ok(self, name):
        return name in self.status and self.status[name][0] == 'ok'

    def is_status_error(self, name):
        return name in self.status and self.status[name][0] == 'error'

    def is_status_na(self, name):
        return name in self.status and self.status[name][0] == 'na'

    def __eq__(self, other):
        return self.path == other.path

    def __lt__(self, other):
        return self.path < other.path

    def __str__(self):
        return "%s (path='%s', license='%s', license_files='%s', hash='%s', patches=%d)" % \
            (self.name, self.path, self.is_status_ok('license'),
             self.is_status_ok('license-files'), self.status['hash'], self.patch_count)


def get_pkglist(npackages, package_list):
    """
    Builds the list of Buildroot packages, returning a list of Package
    objects. Only the .name and .path fields of the Package object are
    initialized.

    npackages: limit to N packages
    package_list: limit to those packages in this list
    """
    WALK_USEFUL_SUBDIRS = ["boot", "linux", "package", "toolchain"]
    WALK_EXCLUDES = ["boot/common.mk",
                     "linux/linux-ext-.*.mk",
                     "package/freescale-imx/freescale-imx.mk",
                     "package/gcc/gcc.mk",
                     "package/gstreamer/gstreamer.mk",
                     "package/gstreamer1/gstreamer1.mk",
                     "package/gtk2-themes/gtk2-themes.mk",
                     "package/matchbox/matchbox.mk",
                     "package/opengl/opengl.mk",
                     "package/qt5/qt5.mk",
                     "package/x11r7/x11r7.mk",
                     "package/doc-asciidoc.mk",
                     "package/pkg-.*.mk",
                     "toolchain/toolchain-external/pkg-toolchain-external.mk",
                     "toolchain/toolchain-external/toolchain-external.mk",
                     "toolchain/toolchain.mk",
                     "toolchain/helpers.mk",
                     "toolchain/toolchain-wrapper.mk"]
    packages = list()
    count = 0
    for root, dirs, files in os.walk(brpath):
        root = os.path.relpath(root, brpath)
        rootdir = root.split("/")
        if len(rootdir) < 1:
            continue
        if rootdir[0] not in WALK_USEFUL_SUBDIRS:
            continue
        for f in files:
            if not f.endswith(".mk"):
                continue
            # Strip ending ".mk"
            pkgname = f[:-3]
            if package_list and pkgname not in package_list:
                continue
            pkgpath = os.path.join(root, f)
            skip = False
            for exclude in WALK_EXCLUDES:
                if re.match(exclude, pkgpath):
                    skip = True
                    continue
            if skip:
                continue
            p = Package(pkgname, pkgpath)
            packages.append(p)
            count += 1
            if npackages and count == npackages:
                return packages
    return packages


def get_show_info_js():
    cmd = ["make", "--no-print-directory", "show-info"]
    return json.loads(subprocess.check_output(cmd))


def package_init_make_info():
    # Fetch all variables at once
    variables = subprocess.check_output(["make", "--no-print-directory", "-s",
                                         "BR2_HAVE_DOT_CONFIG=y", "printvars",
                                         "VARS=%_LICENSE %_LICENSE_FILES %_VERSION %_IGNORE_CVES %_CPE_ID"])
    variable_list = variables.decode().splitlines()

    # We process first the host package VERSION, and then the target
    # package VERSION. This means that if a package exists in both
    # target and host variants, with different values (eg. version
    # numbers (unlikely)), we'll report the target one.
    variable_list = [x[5:] for x in variable_list if x.startswith("HOST_")] + \
                    [x for x in variable_list if not x.startswith("HOST_")]

    for item in variable_list:
        # Get variable name and value
        pkgvar, value = item.split("=", maxsplit=1)

        # Strip the suffix according to the variable
        if pkgvar.endswith("_LICENSE"):
            # If value is "unknown", no license details available
            if value == "unknown":
                continue
            pkgvar = pkgvar[:-8]
            Package.all_licenses[pkgvar] = value

        elif pkgvar.endswith("_LICENSE_FILES"):
            if pkgvar.endswith("_MANIFEST_LICENSE_FILES"):
                continue
            pkgvar = pkgvar[:-14]
            Package.all_license_files.append(pkgvar)

        elif pkgvar.endswith("_VERSION"):
            if pkgvar.endswith("_DL_VERSION"):
                continue
            pkgvar = pkgvar[:-8]
            Package.all_versions[pkgvar] = value

        elif pkgvar.endswith("_IGNORE_CVES"):
            pkgvar = pkgvar[:-12]
            Package.all_ignored_cves[pkgvar] = value.split()

        elif pkgvar.endswith("_CPE_ID"):
            pkgvar = pkgvar[:-7]
            Package.all_cpeids[pkgvar] = value


check_url_count = 0


async def check_url_status(session, pkg, npkgs, retry=True):
    global check_url_count

    try:
        async with session.get(pkg.url) as resp:
            if resp.status >= 400:
                pkg.status['url'] = ("error", "invalid {}".format(resp.status))
                check_url_count += 1
                print("[%04d/%04d] %s" % (check_url_count, npkgs, pkg.name))
                return
    except (aiohttp.ClientError, asyncio.TimeoutError):
        if retry:
            return await check_url_status(session, pkg, npkgs, retry=False)
        else:
            pkg.status['url'] = ("error", "invalid (err)")
            check_url_count += 1
            print("[%04d/%04d] %s" % (check_url_count, npkgs, pkg.name))
            return

    pkg.status['url'] = ("ok", "valid")
    check_url_count += 1
    print("[%04d/%04d] %s" % (check_url_count, npkgs, pkg.name))


async def check_package_urls(packages):
    tasks = []
    connector = aiohttp.TCPConnector(limit_per_host=5)
    async with aiohttp.ClientSession(connector=connector, trust_env=True,
                                     timeout=aiohttp.ClientTimeout(total=15)) as sess:
        packages = [p for p in packages if p.status['url'][0] == 'ok']
        for pkg in packages:
            tasks.append(asyncio.ensure_future(check_url_status(sess, pkg, len(packages))))
        await asyncio.wait(tasks)


def check_package_latest_version_set_status(pkg, status, version, identifier):
    pkg.latest_version = {
        "status": status,
        "version": version,
        "id": identifier,
    }

    if pkg.latest_version['status'] == RM_API_STATUS_ERROR:
        pkg.status['version'] = ('warning', "Release Monitoring API error")
    elif pkg.latest_version['status'] == RM_API_STATUS_NOT_FOUND:
        pkg.status['version'] = ('warning', "Package not found on Release Monitoring")

    if pkg.latest_version['version'] is None:
        pkg.status['version'] = ('warning', "No upstream version available on Release Monitoring")
    elif pkg.latest_version['version'] != pkg.current_version:
        pkg.status['version'] = ('error', "The newer version {} is available upstream".format(pkg.latest_version['version']))
    else:
        pkg.status['version'] = ('ok', 'up-to-date')


async def check_package_get_latest_version_by_distro(session, pkg, retry=True):
    url = "https://release-monitoring.org/api/project/Buildroot/%s" % pkg.name
    try:
        async with session.get(url) as resp:
            if resp.status != 200:
                return False

            data = await resp.json()
            if 'stable_versions' in data and data['stable_versions']:
                version = data['stable_versions'][0]
            elif 'version' in data:
                version = data['version']
            else:
                version = None
            check_package_latest_version_set_status(pkg,
                                                    RM_API_STATUS_FOUND_BY_DISTRO,
                                                    version,
                                                    data['id'])
            return True

    except (aiohttp.ClientError, asyncio.TimeoutError):
        if retry:
            return await check_package_get_latest_version_by_distro(session, pkg, retry=False)
        else:
            return False


async def check_package_get_latest_version_by_guess(session, pkg, retry=True):
    url = "https://release-monitoring.org/api/projects/?pattern=%s" % pkg.name
    try:
        async with session.get(url) as resp:
            if resp.status != 200:
                return False

            data = await resp.json()
            # filter projects that have the right name and a version defined
            projects = [p for p in data['projects'] if p['name'] == pkg.name and 'stable_versions' in p]
            projects.sort(key=lambda x: x['id'])

            if len(projects) == 0:
                return False

            if len(projects[0]['stable_versions']) == 0:
                return False

            check_package_latest_version_set_status(pkg,
                                                    RM_API_STATUS_FOUND_BY_PATTERN,
                                                    projects[0]['stable_versions'][0],
                                                    projects[0]['id'])
            return True

    except (aiohttp.ClientError, asyncio.TimeoutError):
        if retry:
            return await check_package_get_latest_version_by_guess(session, pkg, retry=False)
        else:
            return False


check_latest_count = 0


async def check_package_latest_version_get(session, pkg, npkgs):
    global check_latest_count

    if await check_package_get_latest_version_by_distro(session, pkg):
        check_latest_count += 1
        print("[%04d/%04d] %s" % (check_latest_count, npkgs, pkg.name))
        return

    if await check_package_get_latest_version_by_guess(session, pkg):
        check_latest_count += 1
        print("[%04d/%04d] %s" % (check_latest_count, npkgs, pkg.name))
        return

    check_package_latest_version_set_status(pkg,
                                            RM_API_STATUS_NOT_FOUND,
                                            None, None)
    check_latest_count += 1
    print("[%04d/%04d] %s" % (check_latest_count, npkgs, pkg.name))


async def check_package_latest_version(packages):
    """
    Fills in the .latest_version field of all Package objects

    This field is a dict and has the following keys:

    - status: one of RM_API_STATUS_ERROR,
      RM_API_STATUS_FOUND_BY_DISTRO, RM_API_STATUS_FOUND_BY_PATTERN,
      RM_API_STATUS_NOT_FOUND
    - version: string containing the latest version known by
      release-monitoring.org for this package
    - id: string containing the id of the project corresponding to this
      package, as known by release-monitoring.org
    """

    for pkg in [p for p in packages if not p.is_actual_package]:
        pkg.status['version'] = ("na", "no valid package infra")

    tasks = []
    connector = aiohttp.TCPConnector(limit_per_host=5)
    async with aiohttp.ClientSession(connector=connector, trust_env=True) as sess:
        packages = [p for p in packages if p.is_actual_package]
        for pkg in packages:
            tasks.append(asyncio.ensure_future(check_package_latest_version_get(sess, pkg, len(packages))))
        await asyncio.wait(tasks)


def check_package_cve_affects(cve, cpe_product_pkgs):
    for product in cve.affected_products:
        if product not in cpe_product_pkgs:
            continue
        for pkg in cpe_product_pkgs[product]:
            cve_status = cve.affects(pkg.name, pkg.current_version, pkg.ignored_cves, pkg.cpeid)
            if cve_status == cve.CVE_AFFECTS:
                pkg.cves.append(cve.identifier)
            elif cve_status == cve.CVE_UNKNOWN:
                pkg.unsure_cves.append(cve.identifier)


def check_package_cves(nvd_path, packages):
    if not os.path.isdir(nvd_path):
        os.makedirs(nvd_path)

    cpe_product_pkgs = defaultdict(list)
    for pkg in packages:
        if not pkg.is_actual_package:
            pkg.status['cve'] = ("na", "N/A")
            continue
        if not pkg.current_version:
            pkg.status['cve'] = ("na", "no version information available")
            continue
        if pkg.cpeid:
            cpe_product = cvecheck.cpe_product(pkg.cpeid)
            cpe_product_pkgs[cpe_product].append(pkg)
        else:
            cpe_product_pkgs[pkg.name].append(pkg)

    for cve in cvecheck.CVE.read_nvd_dir(nvd_path):
        check_package_cve_affects(cve, cpe_product_pkgs)

    for pkg in packages:
        if 'cve' not in pkg.status:
            if pkg.cves or pkg.unsure_cves:
                pkg.status['cve'] = ("error", "affected by CVEs")
            else:
                pkg.status['cve'] = ("ok", "not affected by CVEs")


def check_package_cpes(nvd_path, packages):
    class CpeXmlParser:
        cpes = []

        def start(self, tag, attrib):
            if tag == "{http://scap.nist.gov/schema/cpe-extension/2.3}cpe23-item":
                self.cpes.append(attrib['name'])

        def close(self):
            return self.cpes

    print("CPE: Setting up NIST dictionary")
    if not os.path.exists(os.path.join(nvd_path, "cpe")):
        os.makedirs(os.path.join(nvd_path, "cpe"))

    cpe_dict_local = os.path.join(nvd_path, "cpe", os.path.basename(CPEDB_URL))
    if not os.path.exists(cpe_dict_local) or os.stat(cpe_dict_local).st_mtime < time.time() - 86400:
        print("CPE: Fetching xml manifest from [" + CPEDB_URL + "]")
        cpe_dict = requests.get(CPEDB_URL)
        open(cpe_dict_local, "wb").write(cpe_dict.content)

    print("CPE: Unzipping xml manifest...")
    nist_cpe_file = gzip.GzipFile(fileobj=open(cpe_dict_local, 'rb'))

    parser = xml.etree.ElementTree.XMLParser(target=CpeXmlParser())
    while True:
        c = nist_cpe_file.read(1024*1024)
        if not c:
            break
        parser.feed(c)
    cpes = parser.close()

    for p in packages:
        if not p.cpeid:
            continue
        if p.cpeid in cpes:
            p.status['cpe'] = ("ok", "verified CPE identifier")
        else:
            p.status['cpe'] = ("error", "CPE version unknown in CPE database")


def calculate_stats(packages):
    stats = defaultdict(int)
    stats['packages'] = len(packages)
    for pkg in packages:
        # If packages have multiple infra, take the first one. For the
        # vast majority of packages, the target and host infra are the
        # same. There are very few packages that use a different infra
        # for the host and target variants.
        if len(pkg.infras) > 0:
            infra = pkg.infras[0][1]
            stats["infra-%s" % infra] += 1
        else:
            stats["infra-unknown"] += 1
        if pkg.is_status_ok('license'):
            stats["license"] += 1
        else:
            stats["no-license"] += 1
        if pkg.is_status_ok('license-files'):
            stats["license-files"] += 1
        else:
            stats["no-license-files"] += 1
        if pkg.is_status_ok('hash'):
            stats["hash"] += 1
        else:
            stats["no-hash"] += 1
        if pkg.latest_version['status'] == RM_API_STATUS_FOUND_BY_DISTRO:
            stats["rmo-mapping"] += 1
        else:
            stats["rmo-no-mapping"] += 1
        if not pkg.latest_version['version']:
            stats["version-unknown"] += 1
        elif pkg.latest_version['version'] == pkg.current_version:
            stats["version-uptodate"] += 1
        else:
            stats["version-not-uptodate"] += 1
        stats["patches"] += pkg.patch_count
        stats["total-cves"] += len(pkg.cves)
        stats["total-unsure-cves"] += len(pkg.unsure_cves)
        if len(pkg.cves) != 0:
            stats["pkg-cves"] += 1
        if len(pkg.unsure_cves) != 0:
            stats["pkg-unsure-cves"] += 1
        if pkg.cpeid:
            stats["cpe-id"] += 1
        else:
            stats["no-cpe-id"] += 1
    return stats


html_header = """
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<script>
const triangleUp = String.fromCodePoint(32, 9652);
const triangleDown = String.fromCodePoint(32, 9662);
var lastColumnName = false;
const styleElement = document.createElement('style');
document.head.insertAdjacentElement("afterend", styleElement);
const styleSheet = styleElement.sheet;
addedCSSRules = [
".collapse{ height: 200px; overflow: hidden scroll;}",
".see-more{ display: block;}",
".label:hover,.see-more:hover { cursor: pointer; background: #d2ffc4;}"
];

addedCSSRules.forEach(rule => styleSheet.insertRule(rule));

function sortGrid(sortLabel){
	let i = 0;
	let pkgSortArray = [], sortedPkgArray = [], pkgStringSortArray = [], pkgNumSortArray = [];
	const columnValues = Array.from(document.getElementsByClassName(sortLabel));
	const columnName = document.getElementById(sortLabel);
	let lastStyle = document.getElementById("sort-css");

	if (lastStyle){
		lastStyle.disable = true;
		lastStyle.remove();
	};
	styleElement.id = "sort-css";
	document.head.appendChild(styleElement);
	const styleSheet = styleElement.sheet;

        columnValues.shift();
        columnValues.forEach((listing) => {
                let sortArr = [];
                sortArr[0] = listing.id.replace(sortLabel+"_", "");
                if (!listing.innerText){
                        sortArr[1] = -1;
                } else {
                        sortArr[1] = listing.innerText;
                };
                pkgSortArray.push(sortArr);
        });
        pkgSortArray.forEach((listing) => {
                if ( isNaN(parseInt(listing[1], 10)) ){
                        pkgStringSortArray.push(listing);
                } else {
                        listing[1] = parseFloat(listing[1]);
                        pkgNumSortArray.push(listing);
                };
        });

        let sortedStringPkgArray = pkgStringSortArray.sort((a, b) => {
                if (a[1].toUpperCase() < b[1].toUpperCase()) { return -1; };
                if (a[1].toUpperCase() > b[1].toUpperCase()) { return 1; };
                return 0;
        });
        let sortedNumPkgArray = pkgNumSortArray.sort((a, b) => a[1] - b[1]);

        if (columnName.lastElementChild.innerText == triangleDown) {
                columnName.lastElementChild.innerText = triangleUp;
                sortedStringPkgArray.reverse();
                sortedNumPkgArray.reverse();
                sortedPkgArray = sortedNumPkgArray.concat(sortedStringPkgArray);
        } else {
                columnName.lastElementChild.innerText = triangleDown;
                sortedPkgArray = sortedStringPkgArray.concat(sortedNumPkgArray);
        };

	if (lastColumnName && lastColumnName != columnName){lastColumnName.lastElementChild.innerText = ""};
	lastColumnName = columnName;
	sortedPkgArray.unshift(["label"]);
        sortedPkgArray.forEach((listing) => {
		i++;
		let rule = "." + listing[0] + " { grid-row: " + i + "; }";
		styleSheet.insertRule(rule);
        });
	addedCSSRules.forEach(rule => styleSheet.insertRule(rule));
};

function expandField(fieldId){
        const field = document.getElementById(fieldId);
        const fieldText = field.firstElementChild.innerText;
        const fieldTotal = fieldText.split(' ')[2];

        if (fieldText == "see all " + fieldTotal + triangleDown){
		field.firstElementChild.innerText = "see less " + fieldTotal + triangleUp;
                field.style.height = "auto";
        } else {
                field.firstElementChild.innerText = "see all " + fieldTotal + triangleDown;
                field.style.height = "200px";
        }
};
</script>

<style>

.see-more{
  display: none;
}

.label, .see-more {
  position: sticky;
  top: 1px;
}
.label{
  z-index: 1;
  background: white;
  padding: 10px 2px 10px 2px;
}
#package-grid, #results-grid {
  display: grid;
  grid-gap: 2px;
  grid-template-columns: 1fr repeat(12, min-content);
}
#results-grid {
  grid-template-columns: 3fr 1fr;
}
.data {
  border: solid 1px gray;
}
.centered {
  text-align: center;
}
 .correct, .nopatches, .good_url, .version-good, .cpe-ok, .cve-ok {
   background: #d2ffc4;
 }
 .wrong, .lotsofpatches, .invalid_url, .version-needs-update, .cpe-nok, .cve-nok {
   background: #ff9a69;
 }
 .somepatches, .missing_url, .version-unknown, .cpe-unknown, .cve-unknown {
   background: #ffd870;
 }
 .cve_ignored, .version-error {
  background: #ccc;
 }

</style>

<title>Statistics of Buildroot packages</title>

</head>

<body>

<a href="#results">Results</a><br/>

"""  # noqa - tabs and spaces


html_footer = """
</body>
</html>
"""


def infra_str(infra_list):
    if not infra_list:
        return "Unknown"
    elif len(infra_list) == 1:
        return "<b>%s</b><br/>%s" % (infra_list[0][1], infra_list[0][0])
    elif infra_list[0][1] == infra_list[1][1]:
        return "<b>%s</b><br/>%s + %s" % \
            (infra_list[0][1], infra_list[0][0], infra_list[1][0])
    else:
        return "<b>%s</b> (%s)<br/><b>%s</b> (%s)" % \
            (infra_list[0][1], infra_list[0][0],
             infra_list[1][1], infra_list[1][0])


def boolean_str(b):
    if b:
        return "Yes"
    else:
        return "No"


def dump_html_pkg(f, pkg):
    pkg_css_class = pkg.path.replace("/", "_")[:-3]
    f.write(f'<div id="package__{pkg_css_class}" \
        class="package data _{pkg_css_class}">{pkg.path}</div>\n')
    # Patch count
    data_field_id = f'patch_count__{pkg_css_class}'
    div_class = ["centered patch_count data"]
    div_class.append(f'_{pkg_css_class}')
    if pkg.patch_count == 0:
        div_class.append("nopatches")
    elif pkg.patch_count < 5:
        div_class.append("somepatches")
    else:
        div_class.append("lotsofpatches")
    f.write(f'  <div id="{data_field_id}" class="{" ".join(div_class)} \
        ">{str(pkg.patch_count)}</div>\n')

    # Infrastructure
    data_field_id = f'infrastructure__{pkg_css_class}'
    infra = infra_str(pkg.infras)
    div_class = ["centered infrastructure data"]
    div_class.append(f'_{pkg_css_class}')
    if infra == "Unknown":
        div_class.append("wrong")
    else:
        div_class.append("correct")
    f.write(f'  <div id="{data_field_id}" class="{" ".join(div_class)} \
        ">{infra_str(pkg.infras)}</div>\n')

    # License
    data_field_id = f'license__{pkg_css_class}'
    div_class = ["centered license data"]
    div_class.append(f'_{pkg_css_class}')
    if pkg.is_status_ok('license'):
        div_class.append("correct")
    else:
        div_class.append("wrong")
    f.write(f'  <div id="{data_field_id}" class="{" ".join(div_class)} \
        ">{boolean_str(pkg.is_status_ok("license"))}</div>\n')

    # License files
    data_field_id = f'license_files__{pkg_css_class}'
    div_class = ["centered license_files data"]
    div_class.append(f'_{pkg_css_class}')
    if pkg.is_status_ok('license-files'):
        div_class.append("correct")
    else:
        div_class.append("wrong")
    f.write(f'  <div id="{data_field_id}" class="{" ".join(div_class)} \
        ">{boolean_str(pkg.is_status_ok("license-files"))}</div>\n')

    # Hash
    data_field_id = f'hash_file__{pkg_css_class}'
    div_class = ["centered hash_file data"]
    div_class.append(f'_{pkg_css_class}')
    if pkg.is_status_ok('hash'):
        div_class.append("correct")
    else:
        div_class.append("wrong")
    f.write(f'  <div id="{data_field_id}" class="{" ".join(div_class)} \
        ">{boolean_str(pkg.is_status_ok("hash"))}</div>\n')

    # Current version
    data_field_id = f'current_version__{pkg_css_class}'
    if len(pkg.current_version) > 20:
        current_version = pkg.current_version[:20] + "..."
    else:
        current_version = pkg.current_version
    f.write(f'  <div id="{data_field_id}" \
        class="centered current_version data _{pkg_css_class}">{current_version}</div>\n')

    # Latest version
    data_field_id = f'latest_version__{pkg_css_class}'
    div_class.append(f'_{pkg_css_class}')
    div_class.append("latest_version data")
    if pkg.latest_version['status'] == RM_API_STATUS_ERROR:
        div_class.append("version-error")
    if pkg.latest_version['version'] is None:
        div_class.append("version-unknown")
    elif pkg.latest_version['version'] != pkg.current_version:
        div_class.append("version-needs-update")
    else:
        div_class.append("version-good")

    if pkg.latest_version['status'] == RM_API_STATUS_ERROR:
        latest_version_text = "<b>Error</b>"
    elif pkg.latest_version['status'] == RM_API_STATUS_NOT_FOUND:
        latest_version_text = "<b>Not found</b>"
    else:
        if pkg.latest_version['version'] is None:
            latest_version_text = "<b>Found, but no version</b>"
        else:
            latest_version_text = f"""<a href="https://release-monitoring.org/project/{pkg.latest_version['id']}">""" \
                                  f"""<b>{str(pkg.latest_version['version'])}</b></a>"""

        latest_version_text += "<br/>"

        if pkg.latest_version['status'] == RM_API_STATUS_FOUND_BY_DISTRO:
            latest_version_text += 'found by <a href="https://release-monitoring.org/distro/Buildroot/">distro</a>'
        else:
            latest_version_text += "found by guess"

    f.write(f'  <div id="{data_field_id}" class="{" ".join(div_class)}">{latest_version_text}</div>\n')

    # Warnings
    data_field_id = f'warnings__{pkg_css_class}'
    div_class = ["centered warnings data"]
    div_class.append(f'_{pkg_css_class}')
    if pkg.warnings == 0:
        div_class.append("correct")
    else:
        div_class.append("wrong")
    f.write(f'  <div id="{data_field_id}" class="{" ".join(div_class)}">{pkg.warnings}</div>\n')

    # URL status
    data_field_id = f'upstream_url__{pkg_css_class}'
    div_class = ["centered upstream_url data"]
    div_class.append(f'_{pkg_css_class}')
    url_str = pkg.status['url'][1]
    if pkg.status['url'][0] in ("error", "warning"):
        div_class.append("missing_url")
    if pkg.status['url'][0] == "error":
        div_class.append("invalid_url")
        url_str = f"""<a href="{pkg.url}">{pkg.status['url'][1]}</a>"""
    else:
        div_class.append("good_url")
        url_str = f'<a href="{pkg.url}">Link</a>'
    f.write(f'  <div id="{data_field_id}" class="{" ".join(div_class)}">{url_str}</div>\n')

    # CVEs
    data_field_id = f'cves__{pkg_css_class}'
    div_class = ["centered cves data"]
    div_class.append(f'_{pkg_css_class}')
    if len(pkg.cves) > 10:
        div_class.append("collapse")
    if pkg.is_status_ok("cve"):
        div_class.append("cve-ok")
    elif pkg.is_status_error("cve"):
        div_class.append("cve-nok")
    elif pkg.is_status_na("cve") and not pkg.is_actual_package:
        div_class.append("cve-ok")
    else:
        div_class.append("cve-unknown")
    f.write(f'  <div id="{data_field_id}" class="{" ".join(div_class)}">\n')
    if len(pkg.cves) > 10:
        cve_total = len(pkg.cves) + 1
        f.write(f' <div onclick="expandField(\'{data_field_id}\')" \
        class="see-more centered cve_ignored">see all ({cve_total}) &#9662;</div>\n')
    if pkg.is_status_error("cve"):
        for cve in pkg.cves:
            f.write(f'   <a href="https://security-tracker.debian.org/tracker/{cve}">{cve}</a><br/>\n')
        for cve in pkg.unsure_cves:
            f.write(f'   <a href="https://security-tracker.debian.org/tracker/{cve}">{cve} <i>(unsure)</i></a><br/>\n')
    elif pkg.is_status_na("cve"):
        f.write(f"""    {pkg.status['cve'][1]}""")
    else:
        f.write("    N/A\n")
    f.write("  </div>\n")

    # CVEs Ignored
    data_field_id = f'ignored_cves__{pkg_css_class}'
    div_class = ["centered data ignored_cves"]
    div_class.append(f'_{pkg_css_class}')
    if pkg.ignored_cves:
        div_class.append("cve_ignored")
    f.write(f'  <div id="{data_field_id}" class="{" ".join(div_class)}">\n')
    for ignored_cve in pkg.ignored_cves:
        f.write(f'    <a href="https://security-tracker.debian.org/tracker/{ignored_cve}">{ignored_cve}</a><br/>\n')
    f.write("  </div>\n")

    # CPE ID
    data_field_id = f'cpe_id__{pkg_css_class}'
    div_class = ["left cpe_id data"]
    div_class.append(f'_{pkg_css_class}')
    if pkg.is_status_ok("cpe"):
        div_class.append("cpe-ok")
    elif pkg.is_status_error("cpe"):
        div_class.append("cpe-nok")
    elif pkg.is_status_na("cpe") and not pkg.is_actual_package:
        div_class.append("cpe-ok")
    else:
        div_class.append("cpe-unknown")
    f.write(f'  <div id="{data_field_id}" class="{" ".join(div_class)}">\n')
    if pkg.cpeid:
        cpeid_begin = ":".join(pkg.cpeid.split(":")[0:4]) + ":"
        cpeid_formatted = pkg.cpeid.replace(cpeid_begin, cpeid_begin + "<wbr>")
        f.write("  <code>%s</code>\n" % cpeid_formatted)
    if not pkg.is_status_ok("cpe"):
        if pkg.is_actual_package and pkg.current_version:
            if pkg.cpeid:
                f.write(f"""  <br/>{pkg.status['cpe'][1]} <a href="https://nvd.nist.gov/products/cpe/search/results?"""
                        f"""namingFormat=2.3&keyword={":".join(pkg.cpeid.split(":")[0:5])}">(Search)</a>\n""")
            else:
                f.write(f"""  {pkg.status['cpe'][1]} <a href="https://nvd.nist.gov/products/cpe/search/results?"""
                        f"""namingFormat=2.3&keyword={pkg.name}">(Search)</a>\n""")
        else:
            f.write("  %s\n" % pkg.status['cpe'][1])

    f.write("  </div>\n")


def dump_html_all_pkgs(f, packages):
    f.write("""
<div id="package-grid">
<div style="grid-column: 1;" onclick="sortGrid(this.id)" id="package"
     class="package data label"><span>Package</span><span></span></div>
<div style="grid-column: 2;" onclick="sortGrid(this.id)" id="patch_count"
     class="centered patch_count data label"><span>Patch count</span><span></span></div>
<div style="grid-column: 3;" onclick="sortGrid(this.id)" id="infrastructure"
     class="centered infrastructure data label">Infrastructure<span></span></div>
<div style="grid-column: 4;" onclick="sortGrid(this.id)" id="license"
     class="centered license data label"><span>License</span><span></span></div>
<div style="grid-column: 5;" onclick="sortGrid(this.id)" id="license_files"
     class="centered license_files data label"><span>License files</span><span></span></div>
<div style="grid-column: 6;" onclick="sortGrid(this.id)" id="hash_file"
     class="centered hash_file data label"><span>Hash file</span><span></span></div>
<div style="grid-column: 7;" onclick="sortGrid(this.id)" id="current_version"
     class="centered current_version data label"><span>Current version</span><span></span></div>
<div style="grid-column: 8;" onclick="sortGrid(this.id)" id="latest_version"
     class="centered latest_version data label"><span>Latest version</span><span></span></div>
<div style="grid-column: 9;" onclick="sortGrid(this.id)" id="warnings"
     class="centered warnings data label"><span>Warnings</span><span></span></div>
<div style="grid-column: 10;" onclick="sortGrid(this.id)" id="upstream_url"
     class="centered upstream_url data label"><span>Upstream URL</span><span></span></div>
<div style="grid-column: 11;" onclick="sortGrid(this.id)" id="cves"
     class="centered cves data label"><span>CVEs</span><span></span></div>
<div style="grid-column: 12;" onclick="sortGrid(this.id)" id="ignored_cves"
     class="centered ignored_cves data label"><span>CVEs Ignored</span><span></span></div>
<div style="grid-column: 13;" onclick="sortGrid(this.id)" id="cpe_id"
     class="centered cpe_id data label"><span>CPE ID</span><span></span></div>
""")
    for pkg in sorted(packages):
        dump_html_pkg(f, pkg)
    f.write("</div>")


def dump_html_stats(f, stats):
    f.write('<a id="results"></a>\n')
    f.write('<div class="data" id="results-grid">\n')
    infras = [infra[6:] for infra in stats.keys() if infra.startswith("infra-")]
    for infra in infras:
        f.write(' <div class="data">Packages using the <i>%s</i> infrastructure</div><div class="data">%s</div>\n' %
                (infra, stats["infra-%s" % infra]))
    f.write(' <div class="data">Packages having license information</div><div class="data">%s</div>\n' %
            stats["license"])
    f.write(' <div class="data">Packages not having license information</div><div class="data">%s</div>\n' %
            stats["no-license"])
    f.write(' <div class="data">Packages having license files information</div><div class="data">%s</div>\n' %
            stats["license-files"])
    f.write(' <div class="data">Packages not having license files information</div><div class="data">%s</div>\n' %
            stats["no-license-files"])
    f.write(' <div class="data">Packages having a hash file</div><div class="data">%s</div>\n' %
            stats["hash"])
    f.write(' <div class="data">Packages not having a hash file</div><div class="data">%s</div>\n' %
            stats["no-hash"])
    f.write(' <div class="data">Total number of patches</div><div class="data">%s</div>\n' %
            stats["patches"])
    f.write('<div class="data">Packages having a mapping on <i>release-monitoring.org</i></div><div class="data">%s</div>\n' %
            stats["rmo-mapping"])
    f.write('<div class="data">Packages lacking a mapping on <i>release-monitoring.org</i></div><div class="data">%s</div>\n' %
            stats["rmo-no-mapping"])
    f.write('<div class="data">Packages that are up-to-date</div><div class="data">%s</div>\n' %
            stats["version-uptodate"])
    f.write('<div class="data">Packages that are not up-to-date</div><div class="data">%s</div>\n' %
            stats["version-not-uptodate"])
    f.write('<div class="data">Packages with no known upstream version</div><div class="data">%s</div>\n' %
            stats["version-unknown"])
    f.write('<div class="data">Packages affected by CVEs</div><div class="data">%s</div>\n' %
            stats["pkg-cves"])
    f.write('<div class="data">Total number of CVEs affecting all packages</div><div class="data">%s</div>\n' %
            stats["total-cves"])
    f.write('<div class="data">Packages affected by unsure CVEs</div><div class="data">%s</div>\n' %
            stats["pkg-unsure-cves"])
    f.write('<div class="data">Total number of unsure CVEs affecting all packages</div><div class="data">%s</div>\n' %
            stats["total-unsure-cves"])
    f.write('<div class="data">Packages with CPE ID</div><div class="data">%s</div>\n' %
            stats["cpe-id"])
    f.write('<div class="data">Packages without CPE ID</div><div class="data">%s</div>\n' %
            stats["no-cpe-id"])
    f.write('</div>\n')


def dump_html_gen_info(f, date, commit):
    # Updated on Mon Feb 19 08:12:08 CET 2018, Git commit aa77030b8f5e41f1c53eb1c1ad664b8c814ba032
    f.write("<p><i>Updated on %s, git commit %s</i></p>\n" % (str(date), commit))


def dump_html(packages, stats, date, commit, output):
    with open(output, 'w') as f:
        f.write(html_header)
        dump_html_all_pkgs(f, packages)
        dump_html_stats(f, stats)
        dump_html_gen_info(f, date, commit)
        f.write(html_footer)


def dump_json(packages, defconfigs, stats, date, commit, output):
    # Format packages as a dictionnary instead of a list
    # Exclude local field that does not contains real date
    excluded_fields = ['url_worker', 'name']
    pkgs = {
        pkg.name: {
            k: v
            for k, v in pkg.__dict__.items()
            if k not in excluded_fields
        } for pkg in packages
    }
    defconfigs = {
        d.name: {
            k: v
            for k, v in d.__dict__.items()
        } for d in defconfigs
    }
    # Aggregate infrastructures into a single dict entry
    statistics = {
        k: v
        for k, v in stats.items()
        if not k.startswith('infra-')
    }
    statistics['infra'] = {k[6:]: v for k, v in stats.items() if k.startswith('infra-')}
    # The actual structure to dump, add commit and date to it
    final = {'packages': pkgs,
             'stats': statistics,
             'defconfigs': defconfigs,
             'package_status_checks': Package.status_checks,
             'commit': commit,
             'date': str(date)}

    with open(output, 'w') as f:
        json.dump(final, f, indent=2, separators=(',', ': '))
        f.write('\n')


def resolvepath(path):
    return os.path.abspath(os.path.expanduser(path))


def list_str(values):
    return values.split(',')


def parse_args():
    parser = argparse.ArgumentParser()
    output = parser.add_argument_group('output', 'Output file(s)')
    output.add_argument('--html', dest='html', type=resolvepath,
                        help='HTML output file')
    output.add_argument('--json', dest='json', type=resolvepath,
                        help='JSON output file')
    packages = parser.add_mutually_exclusive_group()
    packages.add_argument('-c', dest='configpackages', action='store_true',
                          help='Apply to packages enabled in current configuration')
    packages.add_argument('-n', dest='npackages', type=int, action='store',
                          help='Number of packages')
    packages.add_argument('-p', dest='packages', action='store',
                          help='List of packages (comma separated)')
    parser.add_argument('--nvd-path', dest='nvd_path',
                        help='Path to the local NVD database', type=resolvepath)
    parser.add_argument('--disable', type=list_str,
                        help='Features to disable, comma-separated (cve, upstream, url, cpe, warning)',
                        default=[])
    args = parser.parse_args()
    if not args.html and not args.json:
        parser.error('at least one of --html or --json (or both) is required')
    return args


def __main__():
    global cvecheck

    args = parse_args()

    if args.nvd_path:
        import cve as cvecheck

    show_info_js = None
    if args.packages:
        package_list = args.packages.split(",")
    elif args.configpackages:
        show_info_js = get_show_info_js()
        package_list = set([v["name"] for v in show_info_js.values() if 'name' in v])
    else:
        package_list = None
    date = datetime.datetime.utcnow()
    commit = subprocess.check_output(['git', '-C', brpath,
                                      'rev-parse',
                                      'HEAD']).splitlines()[0].decode()
    print("Build package list ...")
    packages = get_pkglist(args.npackages, package_list)
    print("Getting developers ...")
    developers = parse_developers()
    print("Build defconfig list ...")
    defconfigs = get_defconfig_list()
    for d in defconfigs:
        d.set_developers(developers)
    print("Getting package make info ...")
    package_init_make_info()
    print("Getting package details ...")
    for pkg in packages:
        pkg.set_infra(show_info_js)
        pkg.set_license()
        pkg.set_hash_info()
        pkg.set_patch_count()
        if "warnings" not in args.disable:
            pkg.set_check_package_warnings()
        pkg.set_current_version()
        pkg.set_cpeid()
        pkg.set_url()
        pkg.set_ignored_cves()
        pkg.set_developers(developers)
    if "url" not in args.disable:
        print("Checking URL status")
        loop = asyncio.get_event_loop()
        loop.run_until_complete(check_package_urls(packages))
    if "upstream" not in args.disable:
        print("Getting latest versions ...")
        loop = asyncio.get_event_loop()
        loop.run_until_complete(check_package_latest_version(packages))
    if "cve" not in args.disable and args.nvd_path:
        print("Checking packages CVEs")
        check_package_cves(args.nvd_path, packages)
    if "cpe" not in args.disable and args.nvd_path:
        print("Checking packages CPEs")
        check_package_cpes(args.nvd_path, packages)
    print("Calculate stats")
    stats = calculate_stats(packages)
    if args.html:
        print("Write HTML")
        dump_html(packages, stats, date, commit, args.html)
    if args.json:
        print("Write JSON")
        dump_json(packages, defconfigs, stats, date, commit, args.json)


__main__()