pinecrypt/certidude
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Use init/openvpn method by default for now

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This commit is contained in:
Lauri Võsandi 2021-04-14 00:17:17 +03:00
parent 3332c36629
commit 5d798cfec9
3 changed files with 200 additions and 189 deletions
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7
Dockerfile
View File

@ -9,12 +9,15 @@ RUN echo "Dpkg::Use-Pty=0;" > /etc/apt/apt.conf.d/99quieter
RUN apt-get update -qq RUN apt-get update -qq
RUN apt-get install -y -qq \ RUN apt-get install -y -qq \
python3-pip python3-pip \
openvpn
COPY entrypoint.sh /entrypoint.sh
COPY pinecrypt/client/. /src/pinecrypt/client COPY pinecrypt/client/. /src/pinecrypt/client
COPY setup.py /src/ COPY setup.py /src/
COPY README.md /src/ COPY README.md /src/
COPY misc/ /src/misc/ COPY misc/ /src/misc/
WORKDIR /src WORKDIR /src
RUN pip3 install . RUN pip3 install .
RUN echo "#!/bin/sh" > /usr/bin/chcon
RUN chmod +x /usr/bin/chcon

5
entrypoint.sh Executable file
View File

@ -0,0 +1,5 @@
#!/bin/sh
$@
AUTHORITY=$3
cat /etc/openvpn/$AUTHORITY.conf
openvpn --config /etc/openvpn/$AUTHORITY.conf

377
pinecrypt/client/cli.py
View File

@ -3,6 +3,7 @@
import click import click
import hashlib import hashlib
import logging import logging
import json
import os import os
import random import random
import re import re
@ -78,22 +79,18 @@ def certidude_provision(authority):
@click.command("enroll", help="Run processes for requesting certificates and configuring services") @click.command("enroll", help="Run processes for requesting certificates and configuring services")
@click.option("-k", "--kerberos", default=False, is_flag=True, help="Offer system keytab for auth") @click.option("-k", "--kerberos", default=False, is_flag=True, help="Offer system keytab for auth")
@click.option("-f", "--fork", default=False, is_flag=True, help="Fork to background") @click.option("-f", "--fork", default=False, is_flag=True, help="Fork to background")
@click.option("-nw", "--no-wait", default=False, is_flag=True, help="Return immideately if server doesn't autosign") @click.option("-nw", "--no-wait", default=False, is_flag=True, help="Return immediately if server doesn't autosign")
def certidude_enroll(fork, no_wait, kerberos): def certidude_enroll(fork, no_wait, kerberos):
try: try:
os.makedirs(const.RUN_DIR) os.makedirs(const.RUN_DIR)
except FileExistsError: except FileExistsError:
pass pass
context = globals()
context.update(locals())
if not os.path.exists(const.CLIENT_CONFIG_PATH): if not os.path.exists(const.CLIENT_CONFIG_PATH):
click.echo("Client not configured, so not going to enroll") click.echo("Client not configured, so not going to enroll")
return return
clients = ConfigTreeParser(const.CLIENT_CONFIG_PATH) clients = ConfigTreeParser(const.CLIENT_CONFIG_PATH)
service_config = ConfigTreeParser(const.SERVICES_CONFIG_PATH)
for authority_name in clients.sections(): for authority_name in clients.sections():
try: try:
@ -172,34 +169,28 @@ def certidude_enroll(fork, no_wait, kerberos):
authority_public_key = asymmetric.load_public_key( authority_public_key = asymmetric.load_public_key(
authority_certificate["tbs_certificate"]["subject_public_key_info"]) authority_certificate["tbs_certificate"]["subject_public_key_info"])
# Attempt to install CA certificates system wide
try: try:
authority_system_wide = clients.getboolean(authority_name, "system wide") config_path = clients.get(authority_name, "config path")
except NoOptionError: except NoOptionError:
authority_system_wide = False config_path = "/etc/certidude/authority/%s/config.json" % authority_name
finally: finally:
if authority_system_wide: if os.path.exists(config_path):
# Firefox, Chromium, wget, curl on Fedora click.echo("Found config in: %s" % config_path)
# Note that if ~/.pki/nssdb has been customized before, curl breaks with open(config_path) as fh:
if os.path.exists("/usr/bin/update-ca-trust"): bootstrap = json.loads(fh.read())
link_path = "/etc/pki/ca-trust/source/anchors/%s" % authority_name else:
if not os.path.lexists(link_path): bootstrap_url = "http://%s/api/bootstrap/" % authority_name
os.symlink(authority_path, link_path) click.echo("Attempting to bootstrap connection from %s" % bootstrap_url)
os.system("update-ca-trust") r = requests.get(bootstrap_url)
if r.status_code != 200:
raise ValueError("Bootstrap API endpoint returned %s" % r.content)
bootstrap = r.json()
# curl on Fedora ? config_partial = config_path + ".part"
# pip with open(config_partial, "wb") as oh:
oh.write(r.content)
# Firefox (?) on Debian, Ubuntu click.echo("Writing configuration to: %s" % config_path)
if os.path.exists("/usr/bin/update-ca-certificates") or os.path.exists("/usr/sbin/update-ca-certificates"): os.rename(config_partial, config_path)
link_path = "/usr/local/share/ca-certificates/%s" % authority_name
if not os.path.lexists(link_path):
os.symlink(authority_path, link_path)
os.system("update-ca-certificates")
# TODO: test for curl, wget
try: try:
common_name = clients.get(authority_name, "common name") common_name = clients.get(authority_name, "common name")
@ -326,7 +317,7 @@ def certidude_enroll(fork, no_wait, kerberos):
if submission.status_code == requests.codes.ok: if submission.status_code == requests.codes.ok:
pass pass
if submission.status_code == requests.codes.accepted: if submission.status_code == requests.codes.accepted:
click.echo("Server accepted the request, but refused to sign immideately (%s). Waiting was not requested, hence quitting for now" % submission.text) click.echo("Server accepted the request, but refused to sign immediately (%s). Waiting was not requested, hence quitting for now" % submission.text)
os.unlink(pid_path) os.unlink(pid_path)
continue continue
if submission.status_code == requests.codes.conflict: if submission.status_code == requests.codes.conflict:
@ -367,179 +358,191 @@ def certidude_enroll(fork, no_wait, kerberos):
### Configure related services ### ### Configure related services ###
################################## ##################################
for endpoint in service_config.sections(): endpoint = authority_name
if service_config.get(endpoint, "authority") != authority_name: method = "init/openvpn"
continue
click.echo("Configuring '%s'" % endpoint) click.echo("Configuring '%s'" % endpoint)
csummer = hashlib.sha1() csummer = hashlib.sha1()
csummer.update(endpoint.encode("ascii")) csummer.update(endpoint.encode("ascii"))
csum = csummer.hexdigest() csum = csummer.hexdigest()
uuid = csum[:8] + "-" + csum[8:12] + "-" + csum[12:16] + "-" + csum[16:20] + "-" + csum[20:32] uuid = csum[:8] + "-" + csum[8:12] + "-" + csum[12:16] + "-" + csum[16:20] + "-" + csum[20:32]
# Intranet HTTPS handled by PKCS#12 bundle generation, # OpenVPN set up with initscripts
# so it will not be implemented here if method == "init/openvpn":
openvpn_config_path = "/etc/openvpn/%s.conf" % endpoint
print(bootstrap)
with open(openvpn_config_path + ".part", "w") as fh:
fh.write("client\n")
fh.write("nobind\n")
fh.write("remote %s 1194 udp\n" % endpoint)
fh.write("tls-version-min 1.2\n")
fh.write("tls-cipher %s\n" % bootstrap["openvpn"]["tls_cipher"])
fh.write("cipher %s\n" % bootstrap["openvpn"]["cipher"])
fh.write("auth %s\n" % bootstrap["openvpn"]["auth"])
fh.write("mute-replay-warnings\n")
fh.write("reneg-sec 0\n")
fh.write("remote-cert-tls server\n")
fh.write("dev tun\n")
fh.write("persist-tun\n")
fh.write("persist-key\n")
fh.write("ca %s\n" % authority_path)
fh.write("key %s\n" % key_path)
fh.write("cert %s\n" % certificate_path)
os.rename(openvpn_config_path + ".part", openvpn_config_path)
if os.path.exists("/bin/systemctl"):
click.echo("Re-running systemd generators for OpenVPN...")
os.system("systemctl daemon-reload")
# if not os.path.exists("/etc/systemd/system/openvpn-reconnect.service"):
# with open("/etc/systemd/system/openvpn-reconnect.service.part", "w") as fh:
# fh.write(env.get_template("client/openvpn-reconnect.service").render(context))
# os.rename("/etc/systemd/system/openvpn-reconnect.service.part",
# "/etc/systemd/system/openvpn-reconnect.service")
# click.echo("Created /etc/systemd/system/openvpn-reconnect.service")
os.system("systemctl restart openvpn")
continue
# OpenVPN set up with initscripts # IPSec set up with initscripts
if service_config.get(endpoint, "service") == "init/openvpn": if method == "init/strongswan":
if os.path.exists("/etc/openvpn/%s.disabled" % endpoint) and not os.path.exists("/etc/openvpn/%s.conf" % endpoint): config = loads(open("%s/ipsec.conf" % const.STRONGSWAN_PREFIX).read())
os.rename("/etc/openvpn/%s.disabled" % endpoint, "/etc/openvpn/%s.conf" % endpoint) for section_type, section_name in config:
if os.path.exists("/bin/systemctl"): # Identify correct ipsec.conf section by leftcert
click.echo("Re-running systemd generators for OpenVPN...") if section_type != "conn":
os.system("systemctl daemon-reload") continue
if not os.path.exists("/etc/systemd/system/openvpn-reconnect.service"): if config[section_type,section_name]["leftcert"] != certificate_path:
with open("/etc/systemd/system/openvpn-reconnect.service.part", "w") as fh:
fh.write(env.get_template("client/openvpn-reconnect.service").render(context))
os.rename("/etc/systemd/system/openvpn-reconnect.service.part",
"/etc/systemd/system/openvpn-reconnect.service")
click.echo("Created /etc/systemd/system/openvpn-reconnect.service")
click.echo("Starting OpenVPN...")
os.system("service openvpn start")
continue
# IPSec set up with initscripts
if service_config.get(endpoint, "service") == "init/strongswan":
config = loads(open("%s/ipsec.conf" % const.STRONGSWAN_PREFIX).read())
for section_type, section_name in config:
# Identify correct ipsec.conf section by leftcert
if section_type != "conn":
continue
if config[section_type,section_name]["leftcert"] != certificate_path:
continue
if config[section_type,section_name].get("left", "") == "%defaultroute":
config[section_type,section_name]["auto"] = "start" # This is client
elif config[section_type,section_name].get("leftsourceip", ""):
config[section_type,section_name]["auto"] = "add" # This is server
else:
config[section_type,section_name]["auto"] = "route" # This is site-to-site tunnel
with open("%s/ipsec.conf.part" % const.STRONGSWAN_PREFIX, "w") as fh:
fh.write(config.dumps())
os.rename(
"%s/ipsec.conf.part" % const.STRONGSWAN_PREFIX,
"%s/ipsec.conf" % const.STRONGSWAN_PREFIX)
break
# Tune AppArmor profile, TODO: retain contents
if os.path.exists("/etc/apparmor.d/local"):
with open("/etc/apparmor.d/local/usr.lib.ipsec.charon", "w") as fh:
fh.write(key_path + " r,\n")
fh.write(authority_path + " r,\n")
fh.write(certificate_path + " r,\n")
# Attempt to reload config or start if it's not running
if os.path.exists("/usr/sbin/strongswan"): # wtf fedora
if os.system("strongswan update"):
os.system("strongswan start")
else:
if os.system("ipsec update"):
os.system("ipsec start")
continue
# OpenVPN set up with NetworkManager
if service_config.get(endpoint, "service") == "network-manager/openvpn":
# NetworkManager-strongswan-gnome
nm_config_path = os.path.join("/etc/NetworkManager/system-connections", endpoint)
if os.path.exists(nm_config_path):
click.echo("Not creating %s, remove to regenerate" % nm_config_path)
continue continue
nm_config = ConfigParser()
nm_config.add_section("connection")
nm_config.set("connection", "certidude managed", "true")
nm_config.set("connection", "id", endpoint)
nm_config.set("connection", "uuid", uuid)
nm_config.set("connection", "type", "vpn")
nm_config.add_section("vpn")
nm_config.set("vpn", "service-type", "org.freedesktop.NetworkManager.openvpn")
nm_config.set("vpn", "connection-type", "tls")
nm_config.set("vpn", "comp-lzo", "no")
nm_config.set("vpn", "cert-pass-flags", "0")
nm_config.set("vpn", "tap-dev", "no")
nm_config.set("vpn", "remote-cert-tls", "server") # Assert TLS Server flag of X.509 certificate
nm_config.set("vpn", "remote", service_config.get(endpoint, "remote"))
nm_config.set("vpn", "key", key_path)
nm_config.set("vpn", "cert", certificate_path)
nm_config.set("vpn", "ca", authority_path)
nm_config.set("vpn", "tls-cipher", "TLS-%s-WITH-AES-256-GCM-SHA384" % (
"ECDHE-ECDSA" if authority_public_key.algorithm == "ec" else "DHE-RSA"))
nm_config.set("vpn", "cipher", "AES-128-GCM")
nm_config.set("vpn", "auth", "SHA384")
nm_config.add_section("ipv4")
nm_config.set("ipv4", "method", "auto")
nm_config.set("ipv4", "never-default", "true")
nm_config.add_section("ipv6")
nm_config.set("ipv6", "method", "auto")
try: if config[section_type,section_name].get("left", "") == "%defaultroute":
nm_config.set("vpn", "port", str(service_config.getint(endpoint, "port"))) config[section_type,section_name]["auto"] = "start" # This is client
except NoOptionError: elif config[section_type,section_name].get("leftsourceip", ""):
nm_config.set("vpn", "port", "1194") config[section_type,section_name]["auto"] = "add" # This is server
else:
config[section_type,section_name]["auto"] = "route" # This is site-to-site tunnel
try: with open("%s/ipsec.conf.part" % const.STRONGSWAN_PREFIX, "w") as fh:
if service_config.get(endpoint, "proto") == "tcp": fh.write(config.dumps())
nm_config.set("vpn", "proto-tcp", "yes") os.rename(
except NoOptionError: "%s/ipsec.conf.part" % const.STRONGSWAN_PREFIX,
pass "%s/ipsec.conf" % const.STRONGSWAN_PREFIX)
break
# Prevent creation of files with liberal permissions # Tune AppArmor profile, TODO: retain contents
os.umask(0o177) if os.path.exists("/etc/apparmor.d/local"):
with open("/etc/apparmor.d/local/usr.lib.ipsec.charon", "w") as fh:
fh.write(key_path + " r,\n")
fh.write(authority_path + " r,\n")
fh.write(certificate_path + " r,\n")
# Write NetworkManager configuration # Attempt to reload config or start if it's not running
with open(nm_config_path, "w") as fh: if os.path.exists("/usr/sbin/strongswan"): # wtf fedora
nm_config.write(fh) if os.system("strongswan update"):
click.echo("Created %s" % nm_config_path) os.system("strongswan start")
if os.path.exists("/run/NetworkManager"): else:
os.system("nmcli con reload") if os.system("ipsec update"):
os.system("ipsec start")
continue
# OpenVPN set up with NetworkManager
if method == "network-manager/openvpn":
# NetworkManager-strongswan-gnome
nm_config_path = os.path.join("/etc/NetworkManager/system-connections", endpoint)
if os.path.exists(nm_config_path):
click.echo("Not creating %s, remove to regenerate" % nm_config_path)
continue continue
nm_config = ConfigParser()
nm_config.add_section("connection")
nm_config.set("connection", "certidude managed", "true")
nm_config.set("connection", "id", endpoint)
nm_config.set("connection", "uuid", uuid)
nm_config.set("connection", "type", "vpn")
nm_config.add_section("vpn")
nm_config.set("vpn", "service-type", "org.freedesktop.NetworkManager.openvpn")
nm_config.set("vpn", "connection-type", "tls")
nm_config.set("vpn", "comp-lzo", "no")
nm_config.set("vpn", "cert-pass-flags", "0")
nm_config.set("vpn", "tap-dev", "no")
nm_config.set("vpn", "remote-cert-tls", "server") # Assert TLS Server flag of X.509 certificate
nm_config.set("vpn", "remote", service_config.get(endpoint, "remote"))
nm_config.set("vpn", "key", key_path)
nm_config.set("vpn", "cert", certificate_path)
nm_config.set("vpn", "ca", authority_path)
nm_config.set("vpn", "tls-cipher", "TLS-%s-WITH-AES-256-GCM-SHA384" % (
"ECDHE-ECDSA" if authority_public_key.algorithm == "ec" else "DHE-RSA"))
nm_config.set("vpn", "cipher", "AES-128-GCM")
nm_config.set("vpn", "auth", "SHA384")
nm_config.add_section("ipv4")
nm_config.set("ipv4", "method", "auto")
nm_config.set("ipv4", "never-default", "true")
nm_config.add_section("ipv6")
nm_config.set("ipv6", "method", "auto")
try:
nm_config.set("vpn", "port", str(service_config.getint(endpoint, "port")))
except NoOptionError:
nm_config.set("vpn", "port", "1194")
try:
if service_config.get(endpoint, "proto") == "tcp":
nm_config.set("vpn", "proto-tcp", "yes")
except NoOptionError:
pass
# Prevent creation of files with liberal permissions
os.umask(0o177)
# Write NetworkManager configuration
with open(nm_config_path, "w") as fh:
nm_config.write(fh)
click.echo("Created %s" % nm_config_path)
if os.path.exists("/run/NetworkManager"):
os.system("nmcli con reload")
continue
# IPSec set up with NetworkManager # IPSec set up with NetworkManager
if service_config.get(endpoint, "service") == "network-manager/strongswan": if method == "network-manager/strongswan":
client_config = ConfigParser() client_config = ConfigParser()
nm_config = ConfigParser() nm_config = ConfigParser()
nm_config.add_section("connection") nm_config.add_section("connection")
nm_config.set("connection", "certidude managed", "true") nm_config.set("connection", "certidude managed", "true")
nm_config.set("connection", "id", endpoint) nm_config.set("connection", "id", endpoint)
nm_config.set("connection", "uuid", uuid) nm_config.set("connection", "uuid", uuid)
nm_config.set("connection", "type", "vpn") nm_config.set("connection", "type", "vpn")
nm_config.add_section("vpn") nm_config.add_section("vpn")
nm_config.set("vpn", "service-type", "org.freedesktop.NetworkManager.strongswan") nm_config.set("vpn", "service-type", "org.freedesktop.NetworkManager.strongswan")
nm_config.set("vpn", "encap", "no") nm_config.set("vpn", "encap", "no")
nm_config.set("vpn", "virtual", "yes") nm_config.set("vpn", "virtual", "yes")
nm_config.set("vpn", "method", "key") nm_config.set("vpn", "method", "key")
nm_config.set("vpn", "ipcomp", "no") nm_config.set("vpn", "ipcomp", "no")
nm_config.set("vpn", "address", service_config.get(endpoint, "remote")) nm_config.set("vpn", "address", service_config.get(endpoint, "remote"))
nm_config.set("vpn", "userkey", key_path) nm_config.set("vpn", "userkey", key_path)
nm_config.set("vpn", "usercert", certificate_path) nm_config.set("vpn", "usercert", certificate_path)
nm_config.set("vpn", "certificate", authority_path) nm_config.set("vpn", "certificate", authority_path)
dhgroup = "ecp384" if authority_public_key.algorithm == "ec" else "modp2048" dhgroup = "ecp384" if authority_public_key.algorithm == "ec" else "modp2048"
nm_config.set("vpn", "ike", "aes256-sha384-prfsha384-" + dhgroup) nm_config.set("vpn", "ike", "aes256-sha384-prfsha384-" + dhgroup)
nm_config.set("vpn", "esp", "aes128gcm16-aes128gmac-" + dhgroup) nm_config.set("vpn", "esp", "aes128gcm16-aes128gmac-" + dhgroup)
nm_config.set("vpn", "proposal", "yes") nm_config.set("vpn", "proposal", "yes")
nm_config.add_section("ipv4") nm_config.add_section("ipv4")
nm_config.set("ipv4", "method", "auto") nm_config.set("ipv4", "method", "auto")
# Add routes, may need some more tweaking # Add routes, may need some more tweaking
if service_config.has_option(endpoint, "route"): if service_config.has_option(endpoint, "route"):
for index, subnet in enumerate(service_config.get(endpoint, "route").split(","), start=1): for index, subnet in enumerate(service_config.get(endpoint, "route").split(","), start=1):
nm_config.set("ipv4", "route%d" % index, subnet) nm_config.set("ipv4", "route%d" % index, subnet)
# Prevent creation of files with liberal permissions # Prevent creation of files with liberal permissions
os.umask(0o177) os.umask(0o177)
# Write NetworkManager configuration # Write NetworkManager configuration
with open(os.path.join("/etc/NetworkManager/system-connections", endpoint), "w") as fh: with open(os.path.join("/etc/NetworkManager/system-connections", endpoint), "w") as fh:
nm_config.write(fh) nm_config.write(fh)
click.echo("Created %s" % fh.name) click.echo("Created %s" % fh.name)
if os.path.exists("/run/NetworkManager"): if os.path.exists("/run/NetworkManager"):
os.system("nmcli con reload") os.system("nmcli con reload")
continue continue
# TODO: Puppet, OpenLDAP, <insert awesomeness here> click.echo("Unknown service: %s" % service_config.get(endpoint, "service"))
click.echo("Unknown service: %s" % service_config.get(endpoint, "service"))
os.unlink(pid_path) os.unlink(pid_path)