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mirror of https://gitlab.com/fdroid/fdroidserver.git synced 2024-11-18 20:50:10 +01:00
fdroidserver/fdroidserver/index.py
Jochen Sprickerhof 0f151a3779 v2: move video to translated text (Closes: #1095)
It contains a link to the actual video and can be translated.
2023-02-16 21:42:09 +01:00

1579 lines
57 KiB
Python

#!/usr/bin/env python3
#
# update.py - part of the FDroid server tools
# Copyright (C) 2017, Torsten Grote <t at grobox dot de>
# Copyright (C) 2016, Blue Jay Wireless
# Copyright (C) 2014-2016, Hans-Christoph Steiner <hans@eds.org>
# Copyright (C) 2010-2015, Ciaran Gultnieks <ciaran@ciarang.com>
# Copyright (C) 2013-2014, Daniel Martí <mvdan@mvdan.cc>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import collections
import json
import logging
import os
import re
import shutil
import tempfile
import urllib.parse
import yaml
import zipfile
import calendar
import qrcode
from binascii import hexlify, unhexlify
from datetime import datetime, timezone
from pathlib import Path
from xml.dom.minidom import Document
from . import _
from . import common
from . import metadata
from . import net
from . import signindex
from fdroidserver.common import FDroidPopen, FDroidPopenBytes, load_stats_fdroid_signing_key_fingerprints
from fdroidserver.exception import FDroidException, VerificationException
def make(apps, apks, repodir, archive):
"""Generate the repo index files.
This requires properly initialized options and config objects.
Parameters
----------
apps
OrderedDict of apps to go into the index, each app should have
at least one associated apk
apks
list of apks to go into the index
repodir
the repo directory
archive
True if this is the archive repo, False if it's the
main one.
"""
from fdroidserver.update import METADATA_VERSION
if not hasattr(common.options, 'nosign') or not common.options.nosign:
common.assert_config_keystore(common.config)
# Historically the index has been sorted by App Name, so we enforce this ordering here
sortedids = sorted(apps, key=lambda appid: common.get_app_display_name(apps[appid]).upper())
sortedapps = collections.OrderedDict()
for appid in sortedids:
sortedapps[appid] = apps[appid]
repodict = collections.OrderedDict()
repodict['timestamp'] = datetime.utcnow().replace(tzinfo=timezone.utc)
repodict['version'] = METADATA_VERSION
if common.config['repo_maxage'] != 0:
repodict['maxage'] = common.config['repo_maxage']
if archive:
repodict['name'] = common.config['archive_name']
repodict['icon'] = common.config.get('archive_icon', common.default_config['repo_icon'])
repodict['description'] = common.config['archive_description']
archive_url = common.config.get('archive_url', common.config['repo_url'][:-4] + 'archive')
repodict['address'] = archive_url
if 'archive_web_base_url' in common.config:
repodict["webBaseUrl"] = common.config['archive_web_base_url']
urlbasepath = os.path.basename(urllib.parse.urlparse(archive_url).path)
else:
repodict['name'] = common.config['repo_name']
repodict['icon'] = common.config.get('repo_icon', common.default_config['repo_icon'])
repodict['address'] = common.config['repo_url']
if 'repo_web_base_url' in common.config:
repodict["webBaseUrl"] = common.config['repo_web_base_url']
repodict['description'] = common.config['repo_description']
urlbasepath = os.path.basename(urllib.parse.urlparse(common.config['repo_url']).path)
mirrorcheckfailed = False
mirrors = []
for mirror in common.config.get('mirrors', []):
base = os.path.basename(urllib.parse.urlparse(mirror).path.rstrip('/'))
if common.config.get('nonstandardwebroot') is not True and base != 'fdroid':
logging.error(_("mirror '%s' does not end with 'fdroid'!") % mirror)
mirrorcheckfailed = True
# must end with / or urljoin strips a whole path segment
if mirror.endswith('/'):
mirrors.append(urllib.parse.urljoin(mirror, urlbasepath))
else:
mirrors.append(urllib.parse.urljoin(mirror + '/', urlbasepath))
for mirror in common.config.get('servergitmirrors', []):
for url in get_mirror_service_urls(mirror):
mirrors.append(url + '/' + repodir)
if mirrorcheckfailed:
raise FDroidException(_("Malformed repository mirrors."))
if mirrors:
repodict['mirrors'] = mirrors
requestsdict = collections.OrderedDict()
for command in ('install', 'uninstall'):
packageNames = []
key = command + '_list'
if key in common.config:
if isinstance(common.config[key], str):
packageNames = [common.config[key]]
elif all(isinstance(item, str) for item in common.config[key]):
packageNames = common.config[key]
else:
raise TypeError(_('only accepts strings, lists, and tuples'))
requestsdict[command] = packageNames
fdroid_signing_key_fingerprints = load_stats_fdroid_signing_key_fingerprints()
make_v0(sortedapps, apks, repodir, repodict, requestsdict,
fdroid_signing_key_fingerprints)
make_v1(sortedapps, apks, repodir, repodict, requestsdict,
fdroid_signing_key_fingerprints)
make_v2(sortedapps, apks, repodir, repodict, requestsdict,
fdroid_signing_key_fingerprints, archive)
make_website(sortedapps, repodir, repodict)
def _should_file_be_generated(path, magic_string):
if os.path.exists(path):
with open(path) as f:
# if the magic_string is not in the first line the file should be overwritten
if magic_string not in f.readline():
return False
return True
def make_website(apps, repodir, repodict):
_ignored, repo_pubkey_fingerprint = extract_pubkey()
repo_pubkey_fingerprint_stripped = repo_pubkey_fingerprint.replace(" ", "")
link = repodict["address"]
link_fingerprinted = ('{link}?fingerprint={fingerprint}'
.format(link=link, fingerprint=repo_pubkey_fingerprint_stripped))
# do not change this string, as it will break updates for files with older versions of this string
autogenerate_comment = "auto-generated - fdroid index updates will overwrite this file"
if not os.path.exists(repodir):
os.makedirs(repodir)
qrcode.make(link_fingerprinted).save(os.path.join(repodir, "index.png"))
html_name = 'index.html'
html_file = os.path.join(repodir, html_name)
if _should_file_be_generated(html_file, autogenerate_comment):
with open(html_file, 'w') as f:
name = repodict["name"]
description = repodict["description"]
icon = repodict["icon"]
f.write("""<!-- {autogenerate_comment} -->
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta content="width=device-width; initial-scale=1.0; minimum-scale=0.5; maximum-scale=2.0; user-scalable=1;" name="viewport">
<title>
{name}
</title>
<base href="index.html">
<link href="index.css" rel="stylesheet" type="text/css">
<link href="icons/{icon}" rel="icon" type="image/png">
<link href="icons/{icon}" rel="shortcut icon" type="image/png">
<meta content="{name}" property="og:site_name">
<meta content="{name}" property="og:title">
<meta content property="og:determiner">
<meta content="{description}" property="og:description">
<meta content="index,nofollow" name="robots">
</head>
<body>
<h2>
{name}
</h2>
<div id="intro">
<p style="margin-bottom:.2em;">
<span style="float:right;width:100px;margin-left:.5em;">
<a href="index.png" title="QR: test">
<img alt="QR: test" src="index.png" width="100">
</a>
</span>
{description}
<br>
<br>
Currently it serves
<kbd>
{number_of_apps}
</kbd>
apps. To add it to your F-Droid client, scan the QR code (click it to enlarge) or use this URL:
</p>
<p class="center" style="margin-top:.5em">
<a href="{link_fingerprinted}">
<code style="color:#000000;font-weight:bold;">
{link}
</code>
</a>
</p>
<p>
If you would like to manually verify the fingerprint (SHA-256) of the repository signing key, here it is:
<br>
<blockcode style="color:#000000;font-weight:bold;">
{fingerprint}
</blockcode>
</p>
</div>
</body>
</html>
""".format(autogenerate_comment=autogenerate_comment,
description=description,
fingerprint=repo_pubkey_fingerprint,
icon=icon,
link=link,
link_fingerprinted=link_fingerprinted,
name=name,
number_of_apps=str(len(apps))))
css_file = os.path.join(repodir, "index.css")
if _should_file_be_generated(css_file, autogenerate_comment):
with open(css_file, "w") as f:
# this auto generated comment was not included via .format(), as python seems to have problems with css files in combination with .format()
f.write("""/* auto-generated - fdroid index updates will overwrite this file */
BODY {
font-family : Arial, Helvetica, Sans-Serif;
color : #0000ee;
background-color : #ffffff;
}
p {
text-align : justify;
}
p.center {
text-align : center;
}
TD {
font-family : Arial, Helvetica, Sans-Serif;
color : #0000ee;
}
body,td {
font-size : 14px;
}
TH {
font-family : Arial, Helvetica, Sans-Serif;
color : #0000ee;
background-color : #F5EAD4;
}
a:link {
color : #bb0000;
}
a:visited {
color : #ff0000;
}
.zitat {
margin-left : 1cm;
margin-right : 1cm;
font-style : italic;
}
#intro {
border-spacing : 1em;
border : 1px solid gray;
border-radius : 0.5em;
box-shadow : 10px 10px 5px #888;
margin : 1.5em;
font-size : .9em;
width : 600px;
max-width : 90%;
display : table;
margin-left : auto;
margin-right : auto;
font-size : .8em;
color : #555555;
}
#intro > p {
margin-top : 0;
}
#intro p:last-child {
margin-bottom : 0;
}
.last {
border-bottom : 1px solid black;
padding-bottom : .5em;
text-align : center;
}
table {
border-collapse : collapse;
}
h2 {
text-align : center;
}
.perms {
font-family : monospace;
font-size : .8em;
}
.repoapplist {
display : table;
border-collapse : collapse;
margin-left : auto;
margin-right : auto;
width : 600px;
max-width : 90%;
}
.approw, appdetailrow {
display : table-row;
}
.appdetailrow {
display : flex;
padding : .5em;
}
.appiconbig, .appdetailblock, .appdetailcell {
display : table-cell
}
.appiconbig {
vertical-align : middle;
text-align : center;
}
.appdetailinner {
width : 100%;
}
.applinkcell {
text-align : center;
float : right;
width : 100%;
margin-bottom : .1em;
}
.paddedlink {
margin : 1em;
}
.approw {
border-spacing : 1em;
border : 1px solid gray;
border-radius : 0.5em;
padding : 0.5em;
margin : 1.5em;
}
.appdetailinner .appdetailrow:first-child {
background-color : #d5d5d5;
}
.appdetailinner .appdetailrow:first-child .appdetailcell {
min-width : 33%;
flex : 1 33%;
text-align : center;
}
.appdetailinner .appdetailrow:first-child .appdetailcell:first-child {
text-align : left;
}
.appdetailinner .appdetailrow:first-child .appdetailcell:last-child {
float : none;
text-align : right;
}
.minor-details {
font-size : .8em;
color : #555555;
}
.boldname {
font-weight : bold;
}
#appcount {
text-align : center;
margin-bottom : .5em;
}
kbd {
padding : 0.1em 0.6em;
border : 1px solid #CCC;
background-color : #F7F7F7;
color : #333;
box-shadow : 0px 1px 0px rgba(0, 0, 0, 0.2), 0px 0px 0px 2px #FFF inset;
border-radius : 3px;
display : inline-block;
margin : 0px 0.1em;
text-shadow : 0px 1px 0px #FFF;
white-space : nowrap;
}
div.filterline, div.repoline {
display : table;
margin-left : auto;
margin-right : auto;
margin-bottom : 1em;
vertical-align : middle;
display : table;
font-size : .8em;
}
.filterline form {
display : table-row;
}
.filterline .filtercell {
display : table-cell;
vertical-align : middle;
}
fieldset {
float : left;
}
fieldset select, fieldset input, #reposelect select, #reposelect input {
font-size : .9em;
}
.pager {
display : table;
margin-left : auto;
margin-right : auto;
width : 600px;
max-width : 90%;
padding-top : .6em;
}
/* should correspond to .repoapplist */
.pagerrow {
display : table-row;
}
.pagercell {
display : table-cell;
}
.pagercell.left {
text-align : left;
padding-right : 1em;
}
.pagercell.middle {
text-align : center;
font-size : .9em;
color : #555;
}
.pagercell.right {
text-align : right;
padding-left : 1em;
}
.anti {
color : peru;
}
.antibold {
color : crimson;
}
#footer {
text-align : center;
margin-top : 1em;
font-size : 11px;
color : #555;
}
#footer img {
vertical-align : middle;
}
@media (max-width: 600px) {
.repoapplist {
display : block;
}
.appdetailinner, .appdetailrow {
display : block;
}
.appdetailcell {
display : block;
float : left;
line-height : 1.5em;
}
}""")
def dict_diff(source, target):
if not isinstance(target, dict) or not isinstance(source, dict):
return target
result = {key: None for key in source if key not in target}
for key, value in target.items():
if key not in source:
result[key] = value
elif value != source[key]:
result[key] = dict_diff(source[key], value)
return result
def file_entry(filename, hash_value=None):
meta = {}
meta["name"] = "/" + filename.split("/", 1)[1]
meta["sha256"] = hash_value or common.sha256sum(filename)
meta["size"] = os.stat(filename).st_size
return meta
def load_locale(name, repodir):
lst = {}
for yml in Path().glob("config/**/{name}.yml".format(name=name)):
locale = yml.parts[1]
if len(yml.parts) == 2:
locale = "en-US"
with open(yml, encoding="utf-8") as fp:
elem = yaml.safe_load(fp)
for akey, avalue in elem.items():
if akey not in lst:
lst[akey] = {}
for key, value in avalue.items():
if key not in lst[akey]:
lst[akey][key] = {}
if key == "icon":
shutil.copy(os.path.join("config", value), os.path.join(repodir, "icons"))
lst[akey][key][locale] = file_entry(os.path.join(repodir, "icons", value))
else:
lst[akey][key][locale] = value
return lst
def convert_datetime(obj):
if isinstance(obj, datetime):
# Java prefers milliseconds
# we also need to account for time zone/daylight saving time
return int(calendar.timegm(obj.timetuple()) * 1000)
return obj
def package_metadata(app, repodir):
meta = {}
for element in (
"added",
# "binaries",
"Categories",
"Changelog",
"IssueTracker",
"lastUpdated",
"License",
"SourceCode",
"Translation",
"WebSite",
"featureGraphic",
"promoGraphic",
"tvBanner",
"screenshots",
"AuthorEmail",
"AuthorName",
"AuthorPhone",
"AuthorWebSite",
"Bitcoin",
"FlattrID",
"Liberapay",
"Litecoin",
"OpenCollective",
):
if element in app and app[element]:
element_new = element[:1].lower() + element[1:]
meta[element_new] = convert_datetime(app[element])
for element in (
"Name",
"Summary",
"Description",
"video",
):
element_new = element[:1].lower() + element[1:]
if element in app and app[element]:
meta[element_new] = {"en-US": convert_datetime(app[element])}
elif "localized" in app:
localized = {k: v[element_new] for k, v in app["localized"].items() if element_new in v}
if localized:
meta[element_new] = localized
if "name" not in meta and app["AutoName"]:
meta["name"] = {"en-US": app["AutoName"]}
# fdroidserver/metadata.py App default
if meta["license"] == "Unknown":
del meta["license"]
if app["Donate"]:
meta["donate"] = [app["Donate"]]
# TODO handle different resolutions
if app.get("icon"):
meta["icon"] = {"en-US": file_entry(os.path.join(repodir, "icons", app["icon"]))}
if "iconv2" in app:
meta["icon"] = app["iconv2"]
return meta
def convert_version(version, app, repodir):
ver = {}
if "added" in version:
ver["added"] = convert_datetime(version["added"])
else:
ver["added"] = 0
ver["file"] = {
"name": "/{}".format(version["apkName"]),
version["hashType"]: version["hash"],
"size": version["size"]
}
ipfsCIDv1 = version.get("ipfsCIDv1")
if ipfsCIDv1:
ver["file"]["ipfsCIDv1"] = ipfsCIDv1
if "srcname" in version:
ver["src"] = file_entry(os.path.join(repodir, version["srcname"]))
if "obbMainFile" in version:
ver["obbMainFile"] = file_entry(
os.path.join(repodir, version["obbMainFile"]),
version["obbMainFileSha256"],
)
if "obbPatchFile" in version:
ver["obbPatchFile"] = file_entry(
os.path.join(repodir, version["obbPatchFile"]),
version["obbPatchFileSha256"],
)
ver["manifest"] = manifest = {}
for element in (
"nativecode",
"versionName",
"maxSdkVersion",
):
if element in version:
manifest[element] = version[element]
if "versionCode" in version:
manifest["versionCode"] = version["versionCode"]
if "features" in version and version["features"]:
manifest["features"] = features = []
for feature in version["features"]:
# TODO get version from manifest, default (0) is omitted
# features.append({"name": feature, "version": 1})
features.append({"name": feature})
if "minSdkVersion" in version:
manifest["usesSdk"] = {}
manifest["usesSdk"]["minSdkVersion"] = version["minSdkVersion"]
if "targetSdkVersion" in version:
manifest["usesSdk"]["targetSdkVersion"] = version["targetSdkVersion"]
else:
# https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#target
manifest["usesSdk"]["targetSdkVersion"] = manifest["usesSdk"]["minSdkVersion"]
if "signer" in version:
manifest["signer"] = {"sha256": [version["signer"]]}
for element in ("uses-permission", "uses-permission-sdk-23"):
en = element.replace("uses-permission", "usesPermission").replace("-sdk-23", "Sdk23")
if element in version and version[element]:
manifest[en] = []
for perm in version[element]:
if perm[1]:
manifest[en].append({"name": perm[0], "maxSdkVersion": perm[1]})
else:
manifest[en].append({"name": perm[0]})
if "AntiFeatures" in app and app["AntiFeatures"]:
ver["antiFeatures"] = {}
for antif in app["AntiFeatures"]:
# TODO: get reasons from fdroiddata
# ver["antiFeatures"][antif] = {"en-US": "reason"}
ver["antiFeatures"][antif] = {}
if "AntiFeatures" in version and version["AntiFeatures"]:
if "antiFeatures" not in ver:
ver["antiFeatures"] = {}
for antif in version["AntiFeatures"]:
# TODO: get reasons from fdroiddata
# ver["antiFeatures"][antif] = {"en-US": "reason"}
ver["antiFeatures"][antif] = {}
if "versionCode" in version:
if version["versionCode"] > app["CurrentVersionCode"]:
ver["releaseChannels"] = ["Beta"]
for build in app.get('Builds', []):
if build['versionCode'] == version['versionCode'] and "whatsNew" in build:
ver["whatsNew"] = build["whatsNew"]
break
return ver
def v2_repo(repodict, repodir, archive):
repo = {}
repo["name"] = {"en-US": repodict["name"]}
repo["description"] = {"en-US": repodict["description"]}
repo["icon"] = {"en-US": file_entry("{}/icons/{}".format(repodir, repodict["icon"]))}
config = load_locale("config", repodir)
if config:
repo["name"] = config["archive" if archive else "repo"]["name"]
repo["description"] = config["archive" if archive else "repo"]["description"]
repo["icon"] = config["archive" if archive else "repo"]["icon"]
repo["address"] = repodict["address"]
if "webBaseUrl" in repodict:
repo["webBaseUrl"] = repodict["webBaseUrl"]
if "mirrors" in repodict:
repo["mirrors"] = [{"url": mirror} for mirror in repodict["mirrors"]]
# the first entry is traditionally the primary mirror
if repodict['address'] not in repodict["mirrors"]:
repo["mirrors"].insert(0, {"url": repodict['address'], "isPrimary": True})
repo["timestamp"] = repodict["timestamp"]
antiFeatures = load_locale("antiFeatures", repodir)
if antiFeatures:
repo["antiFeatures"] = antiFeatures
categories = load_locale("categories", repodir)
if categories:
repo["categories"] = categories
channels = load_locale("channels", repodir)
if channels:
repo["releaseChannels"] = channels
return repo
def make_v2(apps, packages, repodir, repodict, requestsdict, fdroid_signing_key_fingerprints, archive):
def _index_encoder_default(obj):
if isinstance(obj, set):
return sorted(list(obj))
if isinstance(obj, datetime):
# Java prefers milliseconds
# we also need to account for time zone/daylight saving time
return int(calendar.timegm(obj.timetuple()) * 1000)
if isinstance(obj, dict):
d = collections.OrderedDict()
for key in sorted(obj.keys()):
d[key] = obj[key]
return d
raise TypeError(repr(obj) + " is not JSON serializable")
output = collections.OrderedDict()
output["repo"] = v2_repo(repodict, repodir, archive)
if requestsdict and requestsdict["install"] or requestsdict["uninstall"]:
output["repo"]["requests"] = requestsdict
# establish sort order of the index
v1_sort_packages(packages, fdroid_signing_key_fingerprints)
output_packages = collections.OrderedDict()
output['packages'] = output_packages
for package in packages:
packageName = package['packageName']
if packageName not in apps:
logging.info(_('Ignoring package without metadata: ') + package['apkName'])
continue
if not package.get('versionName'):
app = apps[packageName]
for build in app.get('Builds', []):
if build['versionCode'] == package['versionCode']:
versionName = build.get('versionName')
logging.info(_('Overriding blank versionName in {apkfilename} from metadata: {version}')
.format(apkfilename=package['apkName'], version=versionName))
package['versionName'] = versionName
break
if packageName in output_packages:
packagelist = output_packages[packageName]
else:
packagelist = {}
output_packages[packageName] = packagelist
packagelist["metadata"] = package_metadata(apps[packageName], repodir)
if "signer" in package:
packagelist["metadata"]["preferredSigner"] = package["signer"]
packagelist["versions"] = {}
packagelist["versions"][package["hash"]] = convert_version(package, apps[packageName], repodir)
entry = {}
entry["timestamp"] = repodict["timestamp"]
entry["version"] = repodict["version"]
if "maxage" in repodict:
entry["maxAge"] = repodict["maxage"]
json_name = 'index-v2.json'
index_file = os.path.join(repodir, json_name)
with open(index_file, "w", encoding="utf-8") as fp:
if common.options.pretty:
json.dump(output, fp, default=_index_encoder_default, indent=2, ensure_ascii=False)
else:
json.dump(output, fp, default=_index_encoder_default, ensure_ascii=False)
json_name = "tmp/{}_{}.json".format(repodir, convert_datetime(repodict["timestamp"]))
with open(json_name, "w", encoding="utf-8") as fp:
if common.options.pretty:
json.dump(output, fp, default=_index_encoder_default, indent=2, ensure_ascii=False)
else:
json.dump(output, fp, default=_index_encoder_default, ensure_ascii=False)
entry["index"] = file_entry(index_file)
entry["index"]["numPackages"] = len(output.get("packages", []))
indexes = sorted(Path().glob("tmp/{}*.json".format(repodir)), key=lambda x: x.name)
indexes.pop() # remove current index
# remove older indexes
while len(indexes) > 10:
indexes.pop(0).unlink()
indexes = [json.loads(Path(fn).read_text(encoding="utf-8")) for fn in indexes]
for diff in Path().glob("{}/diff/*.json".format(repodir)):
diff.unlink()
entry["diffs"] = {}
for old in indexes:
diff_name = str(old["repo"]["timestamp"]) + ".json"
diff_file = os.path.join(repodir, "diff", diff_name)
diff = dict_diff(old, output)
if not os.path.exists(os.path.join(repodir, "diff")):
os.makedirs(os.path.join(repodir, "diff"))
with open(diff_file, "w", encoding="utf-8") as fp:
if common.options.pretty:
json.dump(diff, fp, default=_index_encoder_default, indent=2, ensure_ascii=False)
else:
json.dump(diff, fp, default=_index_encoder_default, ensure_ascii=False)
entry["diffs"][old["repo"]["timestamp"]] = file_entry(diff_file)
entry["diffs"][old["repo"]["timestamp"]]["numPackages"] = len(diff.get("packages", []))
json_name = "entry.json"
index_file = os.path.join(repodir, json_name)
with open(index_file, "w", encoding="utf-8") as fp:
if common.options.pretty:
json.dump(entry, fp, default=_index_encoder_default, indent=2, ensure_ascii=False)
else:
json.dump(entry, fp, default=_index_encoder_default, ensure_ascii=False)
if common.options.nosign:
_copy_to_local_copy_dir(repodir, index_file)
logging.debug(_('index-v2 must have a signature, use `fdroid signindex` to create it!'))
else:
signindex.config = common.config
signindex.sign_index(repodir, json_name)
def make_v1(apps, packages, repodir, repodict, requestsdict, fdroid_signing_key_fingerprints):
def _index_encoder_default(obj):
if isinstance(obj, set):
return sorted(list(obj))
if isinstance(obj, datetime):
# Java prefers milliseconds
# we also need to account for time zone/daylight saving time
return int(calendar.timegm(obj.timetuple()) * 1000)
if isinstance(obj, dict):
d = collections.OrderedDict()
for key in sorted(obj.keys()):
d[key] = obj[key]
return d
raise TypeError(repr(obj) + " is not JSON serializable")
output = collections.OrderedDict()
output['repo'] = repodict
output['requests'] = requestsdict
# establish sort order of the index
v1_sort_packages(packages, fdroid_signing_key_fingerprints)
appslist = []
output['apps'] = appslist
for packageName, appdict in apps.items():
d = collections.OrderedDict()
appslist.append(d)
for k, v in sorted(appdict.items()):
if not v:
continue
if k in ('Builds', 'comments', 'metadatapath',
'ArchivePolicy', 'AutoName', 'AutoUpdateMode', 'MaintainerNotes',
'Provides', 'Repo', 'RepoType', 'RequiresRoot',
'UpdateCheckData', 'UpdateCheckIgnore', 'UpdateCheckMode',
'UpdateCheckName', 'NoSourceSince', 'VercodeOperation',
'summary', 'description', 'promoGraphic', 'screenshots', 'whatsNew',
'featureGraphic', 'iconv2', 'tvBanner',
):
continue
# name things after the App class fields in fdroidclient
if k == 'id':
k = 'packageName'
elif k == 'CurrentVersionCode': # TODO make SuggestedVersionCode the canonical name
k = 'suggestedVersionCode'
v = str(v)
elif k == 'CurrentVersion': # TODO make SuggestedVersionName the canonical name
k = 'suggestedVersionName'
else:
k = k[:1].lower() + k[1:]
d[k] = v
# establish sort order in lists, sets, and localized dicts
for app in output['apps']:
localized = app.get('localized')
if localized:
lordered = collections.OrderedDict()
for lkey, lvalue in sorted(localized.items()):
lordered[lkey] = collections.OrderedDict()
for ikey, iname in sorted(lvalue.items()):
lordered[lkey][ikey] = iname
app['localized'] = lordered
antiFeatures = app.get('AntiFeatures')
if antiFeatures:
app['AntiFeatures'] = sorted(set(antiFeatures))
output_packages = collections.OrderedDict()
output['packages'] = output_packages
for package in packages:
packageName = package['packageName']
if packageName not in apps:
logging.info(_('Ignoring package without metadata: ') + package['apkName'])
continue
if not package.get('versionName'):
app = apps[packageName]
for build in app.get('Builds', []):
if build['versionCode'] == package['versionCode']:
versionName = build.get('versionName')
logging.info(_('Overriding blank versionName in {apkfilename} from metadata: {version}')
.format(apkfilename=package['apkName'], version=versionName))
package['versionName'] = versionName
break
if packageName in output_packages:
packagelist = output_packages[packageName]
else:
packagelist = []
output_packages[packageName] = packagelist
d = collections.OrderedDict()
packagelist.append(d)
for k, v in sorted(package.items()):
if not v:
continue
if k in ('icon', 'icons', 'icons_src', 'ipfsCIDv1', 'name'):
continue
d[k] = v
json_name = 'index-v1.json'
index_file = os.path.join(repodir, json_name)
with open(index_file, 'w') as fp:
if common.options.pretty:
json.dump(output, fp, default=_index_encoder_default, indent=2)
else:
json.dump(output, fp, default=_index_encoder_default)
if common.options.nosign:
_copy_to_local_copy_dir(repodir, index_file)
logging.debug(_('index-v1 must have a signature, use `fdroid signindex` to create it!'))
else:
signindex.config = common.config
signindex.sign_index(repodir, json_name)
def _copy_to_local_copy_dir(repodir, f):
local_copy_dir = common.config.get('local_copy_dir', '')
if os.path.exists(local_copy_dir):
destdir = os.path.join(local_copy_dir, repodir)
if not os.path.exists(destdir):
os.mkdir(destdir)
shutil.copy2(f, destdir, follow_symlinks=False)
elif local_copy_dir:
raise FDroidException(_('"local_copy_dir" {path} does not exist!')
.format(path=local_copy_dir))
def v1_sort_packages(packages, fdroid_signing_key_fingerprints):
"""Sort the supplied list to ensure a deterministic sort order for package entries in the index file.
This sort-order also expresses
installation preference to the clients.
(First in this list = first to install)
Parameters
----------
packages
list of packages which need to be sorted before but into index file.
"""
GROUP_DEV_SIGNED = 1
GROUP_FDROID_SIGNED = 2
GROUP_OTHER_SIGNED = 3
def v1_sort_keys(package):
packageName = package.get('packageName', None)
signer = package.get('signer', None)
dev_signer = common.metadata_find_developer_signature(packageName)
group = GROUP_OTHER_SIGNED
if dev_signer and dev_signer == signer:
group = GROUP_DEV_SIGNED
else:
fdroid_signer = fdroid_signing_key_fingerprints.get(packageName, {}).get('signer')
if fdroid_signer and fdroid_signer == signer:
group = GROUP_FDROID_SIGNED
versionCode = None
if package.get('versionCode', None):
versionCode = -package['versionCode']
return packageName, group, signer, versionCode
packages.sort(key=v1_sort_keys)
def make_v0(apps, apks, repodir, repodict, requestsdict, fdroid_signing_key_fingerprints):
"""Aka index.jar aka index.xml."""
doc = Document()
def addElement(name, value, doc, parent):
el = doc.createElement(name)
el.appendChild(doc.createTextNode(value))
parent.appendChild(el)
def addElementNonEmpty(name, value, doc, parent):
if not value:
return
addElement(name, value, doc, parent)
def addElementIfInApk(name, apk, key, doc, parent):
if key not in apk:
return
value = str(apk[key])
addElement(name, value, doc, parent)
def addElementCheckLocalized(name, app, key, doc, parent, default=''):
"""Fill in field from metadata or localized block.
For name/summary/description, they can come only from the app source,
or from a dir in fdroiddata. They can be entirely missing from the
metadata file if there is localized versions. This will fetch those
from the localized version if its not available in the metadata file.
Attributes should be alpha-sorted, so they must be added in
alpha- sort order.
"""
el = doc.createElement(name)
value = app.get(key)
lkey = key[:1].lower() + key[1:]
localized = app.get('localized')
if not value and localized:
for lang in ['en-US'] + [x for x in localized.keys()]:
if not lang.startswith('en'):
continue
if lang in localized:
value = localized[lang].get(lkey)
if value:
break
if not value and localized and len(localized) > 1:
lang = list(localized.keys())[0]
value = localized[lang].get(lkey)
if not value:
value = default
if not value and name == 'name' and app.get('AutoName'):
value = app['AutoName']
el.appendChild(doc.createTextNode(value))
parent.appendChild(el)
root = doc.createElement("fdroid")
doc.appendChild(root)
repoel = doc.createElement("repo")
repoel.setAttribute("icon", repodict['icon'])
if 'maxage' in repodict:
repoel.setAttribute("maxage", str(repodict['maxage']))
repoel.setAttribute("name", repodict['name'])
pubkey, repo_pubkey_fingerprint = extract_pubkey()
repoel.setAttribute("pubkey", pubkey.decode('utf-8'))
repoel.setAttribute("timestamp", '%d' % repodict['timestamp'].timestamp())
repoel.setAttribute("url", repodict['address'])
repoel.setAttribute("version", str(repodict['version']))
addElement('description', repodict['description'], doc, repoel)
for mirror in repodict.get('mirrors', []):
addElement('mirror', mirror, doc, repoel)
root.appendChild(repoel)
for command in ('install', 'uninstall'):
for packageName in requestsdict[command]:
element = doc.createElement(command)
root.appendChild(element)
element.setAttribute('packageName', packageName)
for appid, appdict in apps.items():
app = metadata.App(appdict)
if app.get('Disabled') is not None:
continue
# Get a list of the apks for this app...
apklist = []
name_from_apk = None
apksbyversion = collections.defaultdict(lambda: [])
for apk in apks:
if apk.get('versionCode') and apk.get('packageName') == appid:
apksbyversion[apk['versionCode']].append(apk)
if name_from_apk is None:
name_from_apk = apk.get('name')
for versionCode, apksforver in apksbyversion.items():
fdroid_signer = fdroid_signing_key_fingerprints.get(appid, {}).get('signer')
fdroid_signed_apk = None
name_match_apk = None
for x in apksforver:
if fdroid_signer and x.get('signer', None) == fdroid_signer:
fdroid_signed_apk = x
if common.apk_release_filename.match(x.get('apkName', '')):
name_match_apk = x
# choose which of the available versions is most
# suiteable for index v0
if fdroid_signed_apk:
apklist.append(fdroid_signed_apk)
elif name_match_apk:
apklist.append(name_match_apk)
else:
apklist.append(apksforver[0])
if len(apklist) == 0:
continue
apel = doc.createElement("application")
apel.setAttribute("id", app.id)
root.appendChild(apel)
addElement('id', app.id, doc, apel)
if app.added:
addElement('added', app.added.strftime('%Y-%m-%d'), doc, apel)
if app.lastUpdated:
addElement('lastupdated', app.lastUpdated.strftime('%Y-%m-%d'), doc, apel)
addElementCheckLocalized('name', app, 'Name', doc, apel, name_from_apk)
addElementCheckLocalized('summary', app, 'Summary', doc, apel)
if app.icon:
addElement('icon', app.icon, doc, apel)
addElementCheckLocalized('desc', app, 'Description', doc, apel,
'No description available')
addElement('license', app.License, doc, apel)
if app.Categories:
addElement('categories', ','.join(app.Categories), doc, apel)
# We put the first (primary) category in LAST, which will have
# the desired effect of making clients that only understand one
# category see that one.
addElement('category', app.Categories[0], doc, apel)
addElement('web', app.WebSite, doc, apel)
addElement('source', app.SourceCode, doc, apel)
addElement('tracker', app.IssueTracker, doc, apel)
addElementNonEmpty('changelog', app.Changelog, doc, apel)
addElementNonEmpty('author', app.AuthorName, doc, apel)
addElementNonEmpty('email', app.AuthorEmail, doc, apel)
addElementNonEmpty('donate', app.Donate, doc, apel)
addElementNonEmpty('bitcoin', app.Bitcoin, doc, apel)
addElementNonEmpty('litecoin', app.Litecoin, doc, apel)
addElementNonEmpty('flattr', app.FlattrID, doc, apel)
addElementNonEmpty('openCollective', app.OpenCollective, doc, apel)
# These elements actually refer to the current version (i.e. which
# one is recommended. They are historically mis-named, and need
# changing, but stay like this for now to support existing clients.
addElement('marketversion', app.CurrentVersion, doc, apel)
addElement('marketvercode', str(app.CurrentVersionCode), doc, apel)
if app.Provides:
pv = app.Provides.split(',')
addElementNonEmpty('provides', ','.join(pv), doc, apel)
if app.RequiresRoot:
addElement('requirements', 'root', doc, apel)
# Sort the APK list into version order, just so the web site
# doesn't have to do any work by default...
apklist = sorted(apklist, key=lambda apk: apk['versionCode'], reverse=True)
if 'antiFeatures' in apklist[0]:
app.AntiFeatures.extend(apklist[0]['antiFeatures'])
if app.AntiFeatures:
afout = sorted(set(app.AntiFeatures))
addElementNonEmpty('antifeatures', ','.join(afout), doc, apel)
# Check for duplicates - they will make the client unhappy...
for i in range(len(apklist) - 1):
first = apklist[i]
second = apklist[i + 1]
if first['versionCode'] == second['versionCode'] \
and first['sig'] == second['sig']:
if first['hash'] == second['hash']:
raise FDroidException('"{0}/{1}" and "{0}/{2}" are exact duplicates!'.format(
repodir, first['apkName'], second['apkName']))
else:
raise FDroidException('duplicates: "{0}/{1}" - "{0}/{2}"'.format(
repodir, first['apkName'], second['apkName']))
current_version_code = 0
current_version_file = None
for apk in apklist:
file_extension = common.get_file_extension(apk['apkName'])
# find the APK for the "Current Version"
if current_version_code < app.CurrentVersionCode:
current_version_file = apk['apkName']
if current_version_code < apk['versionCode']:
current_version_code = apk['versionCode']
apkel = doc.createElement("package")
apel.appendChild(apkel)
versionName = apk.get('versionName')
if not versionName:
for build in app.get('Builds', []):
if (
build['versionCode'] == apk['versionCode']
and 'versionName' in build
):
versionName = build['versionName']
break
if versionName:
addElement('version', versionName, doc, apkel)
addElement('versioncode', str(apk['versionCode']), doc, apkel)
addElement('apkname', apk['apkName'], doc, apkel)
addElementIfInApk('srcname', apk, 'srcname', doc, apkel)
hashel = doc.createElement("hash")
hashel.setAttribute('type', 'sha256')
hashel.appendChild(doc.createTextNode(apk['hash']))
apkel.appendChild(hashel)
addElement('size', str(apk['size']), doc, apkel)
addElementIfInApk('sdkver', apk,
'minSdkVersion', doc, apkel)
addElementIfInApk('targetSdkVersion', apk,
'targetSdkVersion', doc, apkel)
addElementIfInApk('maxsdkver', apk,
'maxSdkVersion', doc, apkel)
addElementIfInApk('obbMainFile', apk,
'obbMainFile', doc, apkel)
addElementIfInApk('obbMainFileSha256', apk,
'obbMainFileSha256', doc, apkel)
addElementIfInApk('obbPatchFile', apk,
'obbPatchFile', doc, apkel)
addElementIfInApk('obbPatchFileSha256', apk,
'obbPatchFileSha256', doc, apkel)
if 'added' in apk:
addElement('added', apk['added'].strftime('%Y-%m-%d'), doc, apkel)
if file_extension == 'apk': # sig is required for APKs, but only APKs
addElement('sig', apk['sig'], doc, apkel)
old_permissions = set()
sorted_permissions = sorted(apk['uses-permission'])
for perm in sorted_permissions:
perm_name = perm[0]
if perm_name.startswith("android.permission."):
perm_name = perm_name[19:]
old_permissions.add(perm_name)
addElementNonEmpty('permissions', ','.join(sorted(old_permissions)), doc, apkel)
for permission in sorted_permissions:
permel = doc.createElement('uses-permission')
if permission[1] is not None:
permel.setAttribute('maxSdkVersion', '%d' % permission[1])
apkel.appendChild(permel)
permel.setAttribute('name', permission[0])
for permission_sdk_23 in sorted(apk['uses-permission-sdk-23']):
permel = doc.createElement('uses-permission-sdk-23')
if permission_sdk_23[1] is not None:
permel.setAttribute('maxSdkVersion', '%d' % permission_sdk_23[1])
apkel.appendChild(permel)
permel.setAttribute('name', permission_sdk_23[0])
if 'nativecode' in apk:
addElement('nativecode', ','.join(sorted(apk['nativecode'])), doc, apkel)
addElementNonEmpty('features', ','.join(sorted(apk['features'])), doc, apkel)
if current_version_file is not None \
and common.config['make_current_version_link'] \
and repodir == 'repo': # only create these
namefield = common.config['current_version_name_source']
name = app.get(namefield)
if not name and namefield == 'Name':
name = app.get('localized', {}).get('en-US', {}).get('name')
if not name:
name = app.id
sanitized_name = re.sub(b'''[ '"&%?+=/]''', b'', str(name).encode('utf-8'))
apklinkname = sanitized_name + os.path.splitext(current_version_file)[1].encode('utf-8')
current_version_path = os.path.join(repodir, current_version_file).encode('utf-8', 'surrogateescape')
if os.path.islink(apklinkname):
os.remove(apklinkname)
os.symlink(current_version_path, apklinkname)
# also symlink gpg signature, if it exists
for extension in (b'.asc', b'.sig'):
sigfile_path = current_version_path + extension
if os.path.exists(sigfile_path):
siglinkname = apklinkname + extension
if os.path.islink(siglinkname):
os.remove(siglinkname)
os.symlink(sigfile_path, siglinkname)
if common.options.pretty:
output = doc.toprettyxml(encoding='utf-8')
else:
output = doc.toxml(encoding='utf-8')
with open(os.path.join(repodir, 'index.xml'), 'wb') as f:
f.write(output)
if 'repo_keyalias' in common.config \
or (common.options.nosign and 'repo_pubkey' in common.config):
if common.options.nosign:
logging.info(_("Creating unsigned index in preparation for signing"))
else:
logging.info(_("Creating signed index with this key (SHA256):"))
logging.info("%s" % repo_pubkey_fingerprint)
# Create a jar of the index...
jar_output = 'index_unsigned.jar' if common.options.nosign else 'index.jar'
p = FDroidPopen(['jar', 'cf', jar_output, 'index.xml'], cwd=repodir)
if p.returncode != 0:
raise FDroidException("Failed to create {0}".format(jar_output))
# Sign the index...
signed = os.path.join(repodir, 'index.jar')
if common.options.nosign:
_copy_to_local_copy_dir(repodir, os.path.join(repodir, jar_output))
# Remove old signed index if not signing
if os.path.exists(signed):
os.remove(signed)
else:
signindex.config = common.config
signindex.sign_jar(signed, use_old_algs=True)
# Copy the repo icon into the repo directory...
icon_dir = os.path.join(repodir, 'icons')
repo_icon = common.config.get('repo_icon', common.default_config['repo_icon'])
iconfilename = os.path.join(icon_dir, os.path.basename(repo_icon))
if os.path.exists(repo_icon):
shutil.copyfile(common.config['repo_icon'], iconfilename)
else:
logging.warning(_('repo_icon "repo/icons/%s" does not exist, generating placeholder.')
% repo_icon)
os.makedirs(os.path.dirname(iconfilename), exist_ok=True)
try:
qrcode.make(common.config['repo_url']).save(iconfilename)
except Exception:
exampleicon = os.path.join(common.get_examples_dir(),
common.default_config['repo_icon'])
shutil.copy(exampleicon, iconfilename)
def extract_pubkey():
"""Extract and return the repository's public key from the keystore.
Returns
-------
public key in hex
repository fingerprint
"""
if 'repo_pubkey' in common.config:
pubkey = unhexlify(common.config['repo_pubkey'])
elif 'keystorepass' in common.config:
env_vars = {'LC_ALL': 'C.UTF-8',
'FDROID_KEY_STORE_PASS': common.config['keystorepass']}
p = FDroidPopenBytes([common.config['keytool'], '-exportcert',
'-alias', common.config['repo_keyalias'],
'-keystore', common.config['keystore'],
'-storepass:env', 'FDROID_KEY_STORE_PASS']
+ list(common.config['smartcardoptions']),
envs=env_vars, output=False, stderr_to_stdout=False)
if p.returncode != 0 or len(p.output) < 20:
msg = "Failed to get repo pubkey!"
if common.config['keystore'] == 'NONE':
msg += ' Is your crypto smartcard plugged in?'
raise FDroidException(msg)
pubkey = p.output
else:
raise FDroidException(_('Neither "repo_pubkey" nor "keystorepass" set in config.yml'))
repo_pubkey_fingerprint = common.get_cert_fingerprint(pubkey)
return hexlify(pubkey), repo_pubkey_fingerprint
def get_mirror_service_urls(url):
"""Get direct URLs from git service for use by fdroidclient.
Via 'servergitmirrors', fdroidserver can create and push a mirror
to certain well known git services like GitLab or GitHub. This
will always use the 'master' branch since that is the default
branch in git. The files are then accessible via alternate URLs,
where they are served in their raw format via a CDN rather than
from git.
Both of the GitLab URLs will work with F-Droid, but only the
GitLab Pages will work in the browser This is because the "raw"
URLs are not served with the correct mime types, so any index.html
which is put in the repo will not be rendered. Putting an
index.html file in the repo root is a common way for to make
information about the repo available to end user.
"""
if url.startswith('git@'):
url = re.sub(r'^git@([^:]+):(.+)', r'https://\1/\2', url)
segments = url.split("/")
if segments[4].endswith('.git'):
segments[4] = segments[4][:-4]
hostname = segments[2]
user = segments[3]
repo = segments[4]
branch = "master"
folder = "fdroid"
urls = []
if hostname == "github.com":
# Github-like RAW segments "https://raw.githubusercontent.com/user/repo/branch/folder"
segments[2] = "raw.githubusercontent.com"
segments.extend([branch, folder])
urls.append('/'.join(segments))
elif hostname == "gitlab.com":
git_mirror_path = os.path.join('git-mirror', folder)
if common.get_dir_size(git_mirror_path) <= common.GITLAB_COM_PAGES_MAX_SIZE:
# Gitlab-like Pages segments "https://user.gitlab.io/repo/folder"
gitlab_pages = ["https:", "", user + ".gitlab.io", repo, folder]
urls.append('/'.join(gitlab_pages))
else:
logging.warning(
_(
'Skipping GitLab Pages mirror because the repo is too large (>%.2fGB)!'
)
% (common.GITLAB_COM_PAGES_MAX_SIZE / 1000000000)
)
# GitLab Raw "https://gitlab.com/user/repo/-/raw/branch/folder"
gitlab_raw = segments + ['-', 'raw', branch, folder]
urls.append('/'.join(gitlab_raw))
# GitLab Artifacts "https://user.gitlab.io/-/repo/-/jobs/job_id/artifacts/public/folder"
job_id = os.getenv('CI_JOB_ID')
try:
int(job_id)
gitlab_artifacts = [
"https:",
"",
user + ".gitlab.io",
'-',
repo,
'-',
'jobs',
job_id,
'artifacts',
'public',
folder,
]
urls.append('/'.join(gitlab_artifacts))
except (TypeError, ValueError):
pass # no Job ID to use, ignore
return urls
def download_repo_index(url_str, etag=None, verify_fingerprint=True, timeout=600):
"""Download and verifies index file, then returns its data.
Downloads the repository index from the given :param url_str and
verifies the repository's fingerprint if :param verify_fingerprint
is not False.
Raises
------
VerificationException() if the repository could not be verified
Returns
-------
A tuple consisting of:
- The index in JSON format or None if the index did not change
- The new eTag as returned by the HTTP request
"""
url = urllib.parse.urlsplit(url_str)
fingerprint = None
if verify_fingerprint:
query = urllib.parse.parse_qs(url.query)
if 'fingerprint' not in query:
raise VerificationException(_("No fingerprint in URL."))
fingerprint = query['fingerprint'][0]
if url.path.endswith('/index-v1.jar'):
path = url.path[:-13].rstrip('/')
else:
path = url.path.rstrip('/')
url = urllib.parse.SplitResult(url.scheme, url.netloc, path + '/index-v1.jar', '', '')
download, new_etag = net.http_get(url.geturl(), etag, timeout)
if download is None:
return None, new_etag
with tempfile.NamedTemporaryFile() as fp:
fp.write(download)
fp.flush()
index, public_key, public_key_fingerprint = get_index_from_jar(fp.name, fingerprint)
index["repo"]["pubkey"] = hexlify(public_key).decode()
index["repo"]["fingerprint"] = public_key_fingerprint
index["apps"] = [metadata.App(app) for app in index["apps"]]
return index, new_etag
def get_index_from_jar(jarfile, fingerprint=None):
"""Return the data, public key, and fingerprint from index-v1.jar.
Parameters
----------
fingerprint is the SHA-256 fingerprint of signing key. Only
hex digits count, all other chars will can be discarded.
Raises
------
VerificationException() if the repository could not be verified
"""
logging.debug(_('Verifying index signature:'))
common.verify_deprecated_jar_signature(jarfile)
with zipfile.ZipFile(jarfile) as jar:
public_key, public_key_fingerprint = get_public_key_from_jar(jar)
if fingerprint is not None:
fingerprint = re.sub(r'[^0-9A-F]', r'', fingerprint.upper())
if fingerprint != public_key_fingerprint:
raise VerificationException(_("The repository's fingerprint does not match."))
data = json.loads(jar.read('index-v1.json').decode())
return data, public_key, public_key_fingerprint
def get_public_key_from_jar(jar):
"""Get the public key and its fingerprint from a JAR file.
Raises
------
VerificationException() if the JAR was not signed exactly once
Parameters
----------
jar
a zipfile.ZipFile object
Returns
-------
the public key from the jar and its fingerprint
"""
# extract certificate from jar
certs = [n for n in jar.namelist() if common.SIGNATURE_BLOCK_FILE_REGEX.match(n)]
if len(certs) < 1:
raise VerificationException(_("Found no signing certificates for repository."))
if len(certs) > 1:
raise VerificationException(_("Found multiple signing certificates for repository."))
# extract public key from certificate
public_key = common.get_certificate(jar.read(certs[0]))
public_key_fingerprint = common.get_cert_fingerprint(public_key).replace(' ', '')
return public_key, public_key_fingerprint