#!/usr/bin/env python3

# Copyright (C) 2009 by Thomas Petazzoni <thomas.petazzoni@free-electrons.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

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
from cpedb import CPEDB  # noqa: E402

INFRA_RE = re.compile(r"\$\(eval \$\(([a-z-]*)-package\)\)")
URL_RE = re.compile(r"\s*https?://\S*\s*$")

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-processeds 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)
        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.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):
        try:
            if self.infras[0][1] == 'virtual':
                return False
        except IndexError:
            return False
        return True

    def set_infra(self):
        """
        Fills in the .infras field
        """
        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-"):
                    self.infras.append(("host", infra[5:]))
                else:
                    self.infras.append(("target", infra))

    def set_license(self):
        """
        Fills in the .status['license'] and .status['license-files'] fields
        """
        if not self.has_valid_infra:
            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.has_valid_infra:
            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.has_valid_infra:
            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.has_valid_infra:
            self.status['cpe'] = ("na", "no valid package infra")
            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 dictionnary")
        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_config_packages():
    cmd = ["make", "--no-print-directory", "show-info"]
    js = json.loads(subprocess.check_output(cmd))
    return set([v["name"] for v in js.values()])


def package_init_make_info():
    # Fetch all variables at once
    variables = subprocess.check_output(["make", "BR2_HAVE_DOT_CONFIG=y", "-s", "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 l in variable_list:
        # Get variable name and value
        pkgvar, value = l.split("=")

        # 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) 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()
            version = data['version'] if 'version' in data else 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 'version' in p]
            projects.sort(key=lambda x: x['id'])

            if len(projects) > 0:
                check_package_latest_version_set_status(pkg,
                                                        RM_API_STATUS_FOUND_BY_DISTRO,
                                                        projects[0]['version'],
                                                        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.has_valid_infra]:
        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.has_valid_infra]
        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]:
            if cve.affects(pkg.name, pkg.current_version, pkg.ignored_cves, pkg.cpeid) == cve.CVE_AFFECTS:
                pkg.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.has_valid_infra:
            pkg.status['cve'] = ("na", "no valid package infra")
            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:
                pkg.status['cve'] = ("error", "affected by CVEs")
            else:
                pkg.status['cve'] = ("ok", "not affected by CVEs")


def check_package_cpes(nvd_path, packages):
    cpedb = CPEDB(nvd_path)
    cpedb.get_xml_dict()
    for p in packages:
        if not p.cpeid:
            continue
        if cpedb.find(p.cpeid):
            p.status['cpe'] = ("ok", "verified CPE identifier")
        else:
            p.status['cpe'] = ("error", "CPE identifier 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)
        if len(pkg.cves) != 0:
            stats["pkg-cves"] += 1
        if pkg.cpeid:
            stats["cpe-id"] += 1
        else:
            stats["no-cpe-id"] += 1
    return stats


html_header = """
<head>
<script src=\"https://www.kryogenix.org/code/browser/sorttable/sorttable.js\"></script>
<style type=\"text/css\">
table {
  width: 100%;
}
td {
  border: 1px solid black;
}
td.centered {
  text-align: center;
}
td.wrong {
  background: #ff9a69;
}
td.correct {
  background: #d2ffc4;
}
td.nopatches {
  background: #d2ffc4;
}
td.somepatches {
  background: #ffd870;
}
td.lotsofpatches {
  background: #ff9a69;
}

td.good_url {
  background: #d2ffc4;
}
td.missing_url {
  background: #ffd870;
}
td.invalid_url {
  background: #ff9a69;
}

td.version-good {
  background: #d2ffc4;
}
td.version-needs-update {
  background: #ff9a69;
}
td.version-unknown {
 background: #ffd870;
}
td.version-error {
 background: #ccc;
}

td.cpe-ok {
  background: #d2ffc4;
}

td.cpe-nok {
  background: #ff9a69;
}

td.cpe-unknown {
 background: #ffd870;
}

td.cve-ok {
  background: #d2ffc4;
}

td.cve-nok {
  background: #ff9a69;
}

td.cve-unknown {
 background: #ffd870;
}

</style>
<title>Statistics of Buildroot packages</title>
</head>

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

<p id=\"sortable_hint\"></p>
"""


html_footer = """
</body>
<script>
if (typeof sorttable === \"object\") {
  document.getElementById(\"sortable_hint\").innerHTML =
  \"hint: the table can be sorted by clicking the column headers\"
}
</script>
</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):
    f.write(" <tr>\n")
    f.write("  <td>%s</td>\n" % pkg.path)

    # Patch count
    td_class = ["centered"]
    if pkg.patch_count == 0:
        td_class.append("nopatches")
    elif pkg.patch_count < 5:
        td_class.append("somepatches")
    else:
        td_class.append("lotsofpatches")
    f.write("  <td class=\"%s\">%s</td>\n" %
            (" ".join(td_class), str(pkg.patch_count)))

    # Infrastructure
    infra = infra_str(pkg.infras)
    td_class = ["centered"]
    if infra == "Unknown":
        td_class.append("wrong")
    else:
        td_class.append("correct")
    f.write("  <td class=\"%s\">%s</td>\n" %
            (" ".join(td_class), infra_str(pkg.infras)))

    # License
    td_class = ["centered"]
    if pkg.is_status_ok('license'):
        td_class.append("correct")
    else:
        td_class.append("wrong")
    f.write("  <td class=\"%s\">%s</td>\n" %
            (" ".join(td_class), boolean_str(pkg.is_status_ok('license'))))

    # License files
    td_class = ["centered"]
    if pkg.is_status_ok('license-files'):
        td_class.append("correct")
    else:
        td_class.append("wrong")
    f.write("  <td class=\"%s\">%s</td>\n" %
            (" ".join(td_class), boolean_str(pkg.is_status_ok('license-files'))))

    # Hash
    td_class = ["centered"]
    if pkg.is_status_ok('hash'):
        td_class.append("correct")
    else:
        td_class.append("wrong")
    f.write("  <td class=\"%s\">%s</td>\n" %
            (" ".join(td_class), boolean_str(pkg.is_status_ok('hash'))))

    # Current version
    if len(pkg.current_version) > 20:
        current_version = pkg.current_version[:20] + "..."
    else:
        current_version = pkg.current_version
    f.write("  <td class=\"centered\">%s</td>\n" % current_version)

    # Latest version
    if pkg.latest_version['status'] == RM_API_STATUS_ERROR:
        td_class.append("version-error")
    if pkg.latest_version['version'] is None:
        td_class.append("version-unknown")
    elif pkg.latest_version['version'] != pkg.current_version:
        td_class.append("version-needs-update")
    else:
        td_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 = "<a href=\"https://release-monitoring.org/project/%s\"><b>%s</b></a>" % \
                (pkg.latest_version['id'], str(pkg.latest_version['version']))

        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("  <td class=\"%s\">%s</td>\n" %
            (" ".join(td_class), latest_version_text))

    # Warnings
    td_class = ["centered"]
    if pkg.warnings == 0:
        td_class.append("correct")
    else:
        td_class.append("wrong")
    f.write("  <td class=\"%s\">%d</td>\n" %
            (" ".join(td_class), pkg.warnings))

    # URL status
    td_class = ["centered"]
    url_str = pkg.status['url'][1]
    if pkg.status['url'][0] in ("error", "warning"):
        td_class.append("missing_url")
    if pkg.status['url'][0] == "error":
        td_class.append("invalid_url")
        url_str = "<a href=%s>%s</a>" % (pkg.url, pkg.status['url'][1])
    else:
        td_class.append("good_url")
        url_str = "<a href=%s>Link</a>" % pkg.url
    f.write("  <td class=\"%s\">%s</td>\n" %
            (" ".join(td_class), url_str))

    # CVEs
    td_class = ["centered"]
    if pkg.is_status_ok("cve"):
        td_class.append("cve-ok")
    elif pkg.is_status_error("cve"):
        td_class.append("cve-nok")
    else:
        td_class.append("cve-unknown")
    f.write("  <td class=\"%s\">\n" % " ".join(td_class))
    if pkg.is_status_error("cve"):
        for cve in pkg.cves:
            f.write("   <a href=\"https://security-tracker.debian.org/tracker/%s\">%s<br/>\n" % (cve, cve))
    elif pkg.is_status_na("cve"):
        f.write("    %s" % pkg.status['cve'][1])
    else:
        f.write("    N/A\n")
    f.write("  </td>\n")

    # CPE ID
    td_class = ["left"]
    if pkg.is_status_ok("cpe"):
        td_class.append("cpe-ok")
    elif pkg.is_status_error("cpe"):
        td_class.append("cpe-nok")
    else:
        td_class.append("cpe-unknown")
    f.write("  <td class=\"%s\">\n" % " ".join(td_class))
    if pkg.cpeid:
        f.write("  <code>%s</code>\n" % pkg.cpeid)
    if not pkg.is_status_ok("cpe"):
        f.write("  %s%s\n" % ("<br/>" if pkg.cpeid else "", pkg.status['cpe'][1]))
    f.write("  </td>\n")

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


def dump_html_all_pkgs(f, packages):
    f.write("""
<table class=\"sortable\">
<tr>
<td>Package</td>
<td class=\"centered\">Patch count</td>
<td class=\"centered\">Infrastructure</td>
<td class=\"centered\">License</td>
<td class=\"centered\">License files</td>
<td class=\"centered\">Hash file</td>
<td class=\"centered\">Current version</td>
<td class=\"centered\">Latest version</td>
<td class=\"centered\">Warnings</td>
<td class=\"centered\">Upstream URL</td>
<td class=\"centered\">CVEs</td>
<td class=\"centered\">CPE ID</td>
</tr>
""")
    for pkg in sorted(packages):
        dump_html_pkg(f, pkg)
    f.write("</table>")


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

    if args.packages:
        package_list = args.packages.split(",")
    elif args.configpackages:
        package_list = get_config_packages()
    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()
        pkg.set_license()
        pkg.set_hash_info()
        pkg.set_patch_count()
        pkg.set_check_package_warnings()
        pkg.set_current_version()
        pkg.set_cpeid()
        pkg.set_url()
        pkg.set_ignored_cves()
        pkg.set_developers(developers)
    print("Checking URL status")
    loop = asyncio.get_event_loop()
    loop.run_until_complete(check_package_urls(packages))
    print("Getting latest versions ...")
    loop = asyncio.get_event_loop()
    loop.run_until_complete(check_package_latest_version(packages))
    if args.nvd_path:
        print("Checking packages CVEs")
        check_package_cves(args.nvd_path, packages)
        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__()