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Johannes Feichtner
2022-06-19 21:31:48 +02:00
commit cbe7fd719f
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.editorconfig Normal file
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# top-most EditorConfig file
root = true
# Unix-style newlines with a newline ending every file
[*]
end_of_line = lf
insert_final_newline = true
indent_style = space
trim_trailing_whitespace = true

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.github/workflows/ci.yml vendored Normal file
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name: w2c-letsencrypt-esxi
on:
push:
tags:
- '[0-9]+.[0-9]+.[0-9]+'
workflow_dispatch:
jobs:
build:
name: Build
runs-on: ubuntu-latest
steps:
- name: Checkout repository
uses: actions/checkout@v2
- name: Create VIB and offline bundle
run: /bin/bash ./build/build.sh
- name: Store VIB and offline bundle
uses: actions/upload-artifact@v2
with:
name: w2c-letsencrypt-esxi
path: |
artifacts/w2c-letsencrypt-esxi.vib
artifacts/w2c-letsencrypt-esxi-offline-bundle.zip
if-no-files-found: error
release:
name: Release
if: startsWith(github.ref, 'refs/tags/')
needs: build
runs-on: ubuntu-latest
steps:
- name: Retrieve build artifacts
uses: actions/download-artifact@v2
with:
name: w2c-letsencrypt-esxi
- name: Create release
id: create_release
uses: softprops/action-gh-release@v1
env:
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
with:
body: w2c-letsencrypt-esxi
files: |
w2c-letsencrypt-esxi.vib
w2c-letsencrypt-esxi-offline-bundle.zip

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.gitlab-ci.yml Normal file
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image: lamw/vibauthor:latest
build:
stage: build
only:
- tags
script:
- /bin/bash ./build/create_vib.sh
artifacts:
name: "$CI_PROJECT_NAME-$CI_COMMIT_TAG"
paths:
- build/w2c-letsencrypt-esxi.vib
- build/w2c-letsencrypt-esxi-offline-bundle.zip

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LICENSE Normal file
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GNU GENERAL PUBLIC LICENSE
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an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
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 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

193
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# Let's Encrypt for VMware ESXi
`w2c-letsencrypt-esxi` is a lightweight open-source solution to automatically obtain and renew Let's Encrypt certificates on standalone VMware ESXi servers. Packaged as a _VIB archive_ or _Offline Bundle_, install/upgrade/removal is possible directly via the web UI or, alternatively, with just a few SSH commands.
Features:
- **Fully-automated**: Requesting and renewing certificates without user interaction
- **Auto-renewal**: A cronjob runs once a week to check if a certificate is due for renewal
- **Persistent**: The certificate, private key and all settings are preserved over ESXi upgrades
- **Configurable**: Customizable parameters for renewal interval, Let's Encrypt (ACME) backend, etc
_Successfully tested with all currently supported versions of ESXi (6.5, 6.7, 7.0)._
## Why?
Many ESXi servers are accessible over the Internet and use self-signed X.509 certificates for TLS connections. This situation not only leads to annoying warnings in the browser when calling the Web UI, but can also be the reason for serious security problems. Despite the enormous popularity of [Let's Encrypt](https://letsencrypt.org), there is no convenient way to automatically request, renew or remove certificates in ESXi.
## Prerequisites
Before installing `w2c-letsencrypt-esxi`, ensure the following preconditions are met:
- Your server is publicly reachable over the Internet
- A _Fully Qualified Domain Name (FQDN)_ is set in ESXi. Something like `localhost.localdomain` will not work
- The hostname you specified can be resolved via A and/or AAAA records in the corresponding DNS zone
**Note:** As soon as you install this software, any existing, non Let's Encrypt certificate gets replaced!
## Install
`w2c-letsencrypt-esxi` can be installed via SSH or the Web UI (= Embedded Host Client).
### SSH on ESXi
```bash
$ wget -O /tmp/w2c-letsencrypt-esxi.vib https://github.com/w2c/letsencrypt-esxi/releases/latest/download/w2c-letsencrypt-esxi.vib
$ esxcli software vib install -v /tmp/w2c-letsencrypt-esxi.vib -f
Installation Result
Message: Operation finished successfully.
Reboot Required: false
VIBs Installed: web-wack-creations_bootbank_w2c-letsencrypt-esxi_1.0.0-0.0.0
VIBs Removed:
VIBs Skipped:
$ esxcli software vib list | grep w2c
w2c-letsencrypt-esxi 1.0.0-0.0.0 web-wack-creations CommunitySupported 2022-05-29
$ cat /var/log/syslog.log | grep w2c
2022-05-29T20:01:46Z /etc/init.d/w2c-letsencrypt: Running 'start' action
2022-05-29T20:01:46Z /opt/w2c-letsencrypt/renew.sh: Starting certificate renewal.
2022-05-29T20:01:46Z /opt/w2c-letsencrypt/renew.sh: Existing cert for example.com not issued by Let's Encrypt. Requesting a new one!
2022-05-29T20:02:02Z /opt/w2c-letsencrypt/renew.sh: Success: Obtained and installed a certificate from Let's Encrypt.
```
### Web UI (= Embedded Host Client)
1. _Storage -> Datastores:_ Use the Datastore browser to upload the [VIB file](https://github.com/w2c/letsencrypt-esxi/releases/latest/download/w2c-letsencrypt-esxi.vib) to a datastore path of your choice.
2. _Manage -> Security & users:_ Set the acceptance level of your host to _Community_.
3. _Manage -> Packages:_ Switch to the list of installed packages, click on _Install update_ and enter the absolute path on the datastore where your just uploaded VIB file resides.
4. While the VIB is installed, ESXi requests a certificate from Let's Encrypt. If you reload the Web UI afterwards, the newly requested certificate should already be active. If not, see the [Wiki](https://github.com/w2c/letsencrypt-esxi/wiki) for troubleshooting.
### Optional Configuration
If you want to try out the script before putting it into production, you may want to test against the [staging environment](https://letsencrypt.org/docs/staging-environment/) of Let's Encrypt. Probably, you also do not wish to renew certificates once in 30 days but in longer or shorter intervals. Most variables of `renew.sh` can be adjusted by creating a `renew.cfg` file with your overwritten values.
`vi /opt/w2c-letsencrypt/renew.cfg`
```bash
# Request a certificate from the staging environment
DIRECTORY_URL="https://acme-staging-v02.api.letsencrypt.org/directory"
# Set the renewal interval to 15 days
RENEW_DAYS=15
```
To apply your modifications, run `/etc/init.d/w2c-letsencrypt start`
## Uninstall
Remove the installed `w2c-letsencrypt-esxi` package via SSH:
```bash
$ esxcli software vib remove -n w2c-letsencrypt-esxi
Removal Result
Message: Operation finished successfully.
Reboot Required: false
VIBs Installed:
VIBs Removed: web-wack-creations_bootbank_w2c-letsencrypt-esxi_1.0.0-0.0.0
VIBs Skipped:
```
This action will purge `w2c-letsencrypt-esxi`, undo any changes to system files (cronjob and port redirection) and finally call `/sbin/generate-certificates` to generate and install a new, self-signed certificate.
## Usage
Usually, fully-automated. No interaction required.
### Hostname Change
If you change the hostname on our ESXi instance, the domain the certificate is issued for will mismatch. In that case, either re-install `w2c-letsencrypt-esxi` or simply run `/etc/init.d/w2c-letsencrypt start`, e.g.:
```bash
$ esxcfg-advcfg -s new-example.com /Misc/hostname
Value of HostName is new-example.com
$ /etc/init.d/w2c-letsencrypt start
Running 'start' action
Starting certificate renewal.
Existing cert issued for example.com but current domain name is new-example.com. Requesting a new one!
Generating RSA private key, 4096 bit long modulus
...
```
### Force Renewal
You already have a valid certificate from Let's Encrypt but nonetheless want to renew it now:
```bash
rm /etc/vmware/ssl/rui.crt
/etc/init.d/w2c-letsencrypt start
```
## How does it work?
* Checks if the current certificate is issued by Let's Encrypt and due for renewal (_default:_ 30d in advance)
* Generates a 4096-bit RSA keypair and CSR
* Instructs `rhttpproxy` to route all requests to `/.well-known/acme-challenge` to a custom port
* Configures ESXi firewall to allow outgoing HTTP connections
* Uses [acme-tiny](https://github.com/diafygi/acme-tiny) for all interactions with Let's Encrypt
* Starts an HTTP server on a non-privileged port to fulfill Let's Encrypt challenges
* Installs the retrieved certificate and restarts all services relying on it
* Adds a cronjob to check periodically if the certificate is due for renewal (_default:_ weekly on Sunday, 00:00)
## Demo
Here is a sample output when invoking the script manually via SSH:
```bash
$ /etc/init.d/w2c-letsencrypt start
Running 'start' action
Starting certificate renewal.
Existing cert for example.com not issued by Let's Encrypt. Requesting a new one!
Generating RSA private key, 4096 bit long modulus
***************************************************************************++++
e is 65537 (0x10001)
Serving HTTP on 0.0.0.0 port 8120 ...
Parsing account key...
Parsing CSR...
Found domains: example.com
Getting directory...
Directory found!
Registering account...
Already registered!
Creating new order...
Order created!
Verifying example.com...
127.0.0.1 - - [29/May/2022 13:14:14] "GET /.well-known/acme-challenge/Ps8VO0v9YzohqfHgnW1xQkHuOKnY0nDakmV9QnrVnVE HTTP/1.1" 200 -
127.0.0.1 - - [29/May/2022 13:14:16] "GET /.well-known/acme-challenge/Ps8VO0v9YzohqfHgnW1xQkHuOKnY0nDakmV9QnrVnVE HTTP/1.1" 200 -
127.0.0.1 - - [29/May/2022 13:14:17] "GET /.well-known/acme-challenge/Ps8VO0v9YzohqfHgnW1xQkHuOKnY0nDakmV9QnrVnVE HTTP/1.1" 200 -
127.0.0.1 - - [29/May/2022 13:14:17] "GET /.well-known/acme-challenge/Ps8VO0v9YzohqfHgnW1xQkHuOKnY0nDakmV9QnrVnVE HTTP/1.1" 200 -
127.0.0.1 - - [29/May/2022 13:14:21] "GET /.well-known/acme-challenge/Ps8VO0v9YzohqfHgnW1xQkHuOKnY0nDakmV9QnrVnVE HTTP/1.1" 200 -
example.com verified!
Signing certificate...
Certificate signed!
Success: Obtained and installed a certificate from Let's Encrypt.
hostd signalled.
rabbitmqproxy is not running
VMware HTTP reverse proxy signalled.
sfcbd-init: Getting Exclusive access, please wait...
sfcbd-init: Exclusive access granted.
vpxa signalled.
vsanperfsvc is not running.
/etc/init.d/vvold ssl_reset, PID 2129283
vvold is not running.
```
## Troubleshooting
See the [Wiki](https://github.com/w2c/letsencrypt-esxi/wiki) for possible pitfalls and solutions.
## License
w2c-letsencrypt-esxi 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 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.

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#!/usr/bin/env python3
# Copyright Daniel Roesler, under MIT license, see LICENSE at github.com/diafygi/acme-tiny
import argparse, subprocess, json, os, sys, base64, binascii, time, hashlib, re, copy, textwrap, logging
try:
from urllib.request import urlopen, Request # Python 3
except ImportError: # pragma: no cover
from urllib2 import urlopen, Request # Python 2
DEFAULT_CA = "https://acme-v02.api.letsencrypt.org" # DEPRECATED! USE DEFAULT_DIRECTORY_URL INSTEAD
DEFAULT_DIRECTORY_URL = "https://acme-v02.api.letsencrypt.org/directory"
LOGGER = logging.getLogger(__name__)
LOGGER.addHandler(logging.StreamHandler())
LOGGER.setLevel(logging.INFO)
def get_crt(account_key, csr, acme_dir, log=LOGGER, CA=DEFAULT_CA, disable_check=False, directory_url=DEFAULT_DIRECTORY_URL, contact=None, check_port=None):
directory, acct_headers, alg, jwk = None, None, None, None # global variables
# helper functions - base64 encode for jose spec
def _b64(b):
return base64.urlsafe_b64encode(b).decode('utf8').replace("=", "")
# helper function - run external commands
def _cmd(cmd_list, stdin=None, cmd_input=None, err_msg="Command Line Error"):
proc = subprocess.Popen(cmd_list, stdin=stdin, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = proc.communicate(cmd_input)
if proc.returncode != 0:
raise IOError("{0}\n{1}".format(err_msg, err))
return out
# helper function - make request and automatically parse json response
def _do_request(url, data=None, err_msg="Error", depth=0):
try:
resp = urlopen(Request(url, data=data, headers={"Content-Type": "application/jose+json", "User-Agent": "acme-tiny"}))
resp_data, code, headers = resp.read().decode("utf8"), resp.getcode(), resp.headers
except IOError as e:
resp_data = e.read().decode("utf8") if hasattr(e, "read") else str(e)
code, headers = getattr(e, "code", None), {}
try:
resp_data = json.loads(resp_data) # try to parse json results
except ValueError:
pass # ignore json parsing errors
if depth < 100 and code == 400 and resp_data['type'] == "urn:ietf:params:acme:error:badNonce":
raise IndexError(resp_data) # allow 100 retrys for bad nonces
if code not in [200, 201, 204]:
raise ValueError("{0}:\nUrl: {1}\nData: {2}\nResponse Code: {3}\nResponse: {4}".format(err_msg, url, data, code, resp_data))
return resp_data, code, headers
# helper function - make signed requests
def _send_signed_request(url, payload, err_msg, depth=0):
payload64 = "" if payload is None else _b64(json.dumps(payload).encode('utf8'))
new_nonce = _do_request(directory['newNonce'])[2]['Replay-Nonce']
protected = {"url": url, "alg": alg, "nonce": new_nonce}
protected.update({"jwk": jwk} if acct_headers is None else {"kid": acct_headers['Location']})
protected64 = _b64(json.dumps(protected).encode('utf8'))
protected_input = "{0}.{1}".format(protected64, payload64).encode('utf8')
out = _cmd(["openssl", "dgst", "-sha256", "-sign", account_key], stdin=subprocess.PIPE, cmd_input=protected_input, err_msg="OpenSSL Error")
data = json.dumps({"protected": protected64, "payload": payload64, "signature": _b64(out)})
try:
return _do_request(url, data=data.encode('utf8'), err_msg=err_msg, depth=depth)
except IndexError: # retry bad nonces (they raise IndexError)
return _send_signed_request(url, payload, err_msg, depth=(depth + 1))
# helper function - poll until complete
def _poll_until_not(url, pending_statuses, err_msg):
result, t0 = None, time.time()
while result is None or result['status'] in pending_statuses:
assert (time.time() - t0 < 3600), "Polling timeout" # 1 hour timeout
time.sleep(0 if result is None else 2)
result, _, _ = _send_signed_request(url, None, err_msg)
return result
# parse account key to get public key
log.info("Parsing account key...")
out = _cmd(["openssl", "rsa", "-in", account_key, "-noout", "-text"], err_msg="OpenSSL Error")
pub_pattern = r"modulus:[\s]+?00:([a-f0-9\:\s]+?)\npublicExponent: ([0-9]+)"
pub_hex, pub_exp = re.search(pub_pattern, out.decode('utf8'), re.MULTILINE|re.DOTALL).groups()
pub_exp = "{0:x}".format(int(pub_exp))
pub_exp = "0{0}".format(pub_exp) if len(pub_exp) % 2 else pub_exp
alg, jwk = "RS256", {
"e": _b64(binascii.unhexlify(pub_exp.encode("utf-8"))),
"kty": "RSA",
"n": _b64(binascii.unhexlify(re.sub(r"(\s|:)", "", pub_hex).encode("utf-8"))),
}
accountkey_json = json.dumps(jwk, sort_keys=True, separators=(',', ':'))
thumbprint = _b64(hashlib.sha256(accountkey_json.encode('utf8')).digest())
# find domains
log.info("Parsing CSR...")
out = _cmd(["openssl", "req", "-in", csr, "-noout", "-text"], err_msg="Error loading {0}".format(csr))
domains = set([])
common_name = re.search(r"Subject:.*? CN\s?=\s?([^\s,;/]+)", out.decode('utf8'))
if common_name is not None:
domains.add(common_name.group(1))
subject_alt_names = re.search(r"X509v3 Subject Alternative Name: (?:critical)?\n +([^\n]+)\n", out.decode('utf8'), re.MULTILINE|re.DOTALL)
if subject_alt_names is not None:
for san in subject_alt_names.group(1).split(", "):
if san.startswith("DNS:"):
domains.add(san[4:])
log.info(u"Found domains: {0}".format(", ".join(domains)))
# get the ACME directory of urls
log.info("Getting directory...")
directory_url = CA + "/directory" if CA != DEFAULT_CA else directory_url # backwards compatibility with deprecated CA kwarg
directory, _, _ = _do_request(directory_url, err_msg="Error getting directory")
log.info("Directory found!")
# create account, update contact details (if any), and set the global key identifier
log.info("Registering account...")
reg_payload = {"termsOfServiceAgreed": True} if contact is None else {"termsOfServiceAgreed": True, "contact": contact}
account, code, acct_headers = _send_signed_request(directory['newAccount'], reg_payload, "Error registering")
log.info("{0} Account ID: {1}".format("Registered!" if code == 201 else "Already registered!", acct_headers['Location']))
if contact is not None:
account, _, _ = _send_signed_request(acct_headers['Location'], {"contact": contact}, "Error updating contact details")
log.info("Updated contact details:\n{0}".format("\n".join(account['contact'])))
# create a new order
log.info("Creating new order...")
order_payload = {"identifiers": [{"type": "dns", "value": d} for d in domains]}
order, _, order_headers = _send_signed_request(directory['newOrder'], order_payload, "Error creating new order")
log.info("Order created!")
# get the authorizations that need to be completed
for auth_url in order['authorizations']:
authorization, _, _ = _send_signed_request(auth_url, None, "Error getting challenges")
domain = authorization['identifier']['value']
# skip if already valid
if authorization['status'] == "valid":
log.info("Already verified: {0}, skipping...".format(domain))
continue
log.info("Verifying {0}...".format(domain))
# find the http-01 challenge and write the challenge file
challenge = [c for c in authorization['challenges'] if c['type'] == "http-01"][0]
token = re.sub(r"[^A-Za-z0-9_\-]", "_", challenge['token'])
keyauthorization = "{0}.{1}".format(token, thumbprint)
wellknown_path = os.path.join(acme_dir, token)
with open(wellknown_path, "w") as wellknown_file:
wellknown_file.write(keyauthorization)
# check that the file is in place
try:
wellknown_url = "http://{0}{1}/.well-known/acme-challenge/{2}".format(domain, "" if check_port is None else ":{0}".format(check_port), token)
assert (disable_check or _do_request(wellknown_url)[0] == keyauthorization)
except (AssertionError, ValueError) as e:
raise ValueError("Wrote file to {0}, but couldn't download {1}: {2}".format(wellknown_path, wellknown_url, e))
# say the challenge is done
_send_signed_request(challenge['url'], {}, "Error submitting challenges: {0}".format(domain))
authorization = _poll_until_not(auth_url, ["pending"], "Error checking challenge status for {0}".format(domain))
if authorization['status'] != "valid":
raise ValueError("Challenge did not pass for {0}: {1}".format(domain, authorization))
os.remove(wellknown_path)
log.info("{0} verified!".format(domain))
# finalize the order with the csr
log.info("Signing certificate...")
csr_der = _cmd(["openssl", "req", "-in", csr, "-outform", "DER"], err_msg="DER Export Error")
_send_signed_request(order['finalize'], {"csr": _b64(csr_der)}, "Error finalizing order")
# poll the order to monitor when it's done
order = _poll_until_not(order_headers['Location'], ["pending", "processing"], "Error checking order status")
if order['status'] != "valid":
raise ValueError("Order failed: {0}".format(order))
# download the certificate
certificate_pem, _, _ = _send_signed_request(order['certificate'], None, "Certificate download failed")
log.info("Certificate signed!")
return certificate_pem
def main(argv=None):
parser = argparse.ArgumentParser(
formatter_class=argparse.RawDescriptionHelpFormatter,
description=textwrap.dedent("""\
This script automates the process of getting a signed TLS certificate from Let's Encrypt using the ACME protocol.
It will need to be run on your server and have access to your private account key, so PLEASE READ THROUGH IT!
It's only ~200 lines, so it won't take long.
Example Usage: python acme_tiny.py --account-key ./account.key --csr ./domain.csr --acme-dir /usr/share/nginx/html/.well-known/acme-challenge/ > signed_chain.crt
""")
)
parser.add_argument("--account-key", required=True, help="path to your Let's Encrypt account private key")
parser.add_argument("--csr", required=True, help="path to your certificate signing request")
parser.add_argument("--acme-dir", required=True, help="path to the .well-known/acme-challenge/ directory")
parser.add_argument("--quiet", action="store_const", const=logging.ERROR, help="suppress output except for errors")
parser.add_argument("--disable-check", default=False, action="store_true", help="disable checking if the challenge file is hosted correctly before telling the CA")
parser.add_argument("--directory-url", default=DEFAULT_DIRECTORY_URL, help="certificate authority directory url, default is Let's Encrypt")
parser.add_argument("--ca", default=DEFAULT_CA, help="DEPRECATED! USE --directory-url INSTEAD!")
parser.add_argument("--contact", metavar="CONTACT", default=None, nargs="*", help="Contact details (e.g. mailto:aaa@bbb.com) for your account-key")
parser.add_argument("--check-port", metavar="PORT", default=None, help="what port to use when self-checking the challenge file, default is port 80")
args = parser.parse_args(argv)
LOGGER.setLevel(args.quiet or LOGGER.level)
signed_crt = get_crt(args.account_key, args.csr, args.acme_dir, log=LOGGER, CA=args.ca, disable_check=args.disable_check, directory_url=args.directory_url, contact=args.contact, check_port=args.check_port)
sys.stdout.write(signed_crt)
if __name__ == "__main__": # pragma: no cover
main(sys.argv[1:])

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FROM lamw/vibauthor
# Copy all files to the container
COPY . letsencrypt-esxi
# Run VIB build script
RUN /bin/bash letsencrypt-esxi/build/create_vib.sh
CMD ["/bin/bash"]

88
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# Build w2c-letsencrypt-esxi VIB & Offline Bundle
The `build.sh` bash script includes the commands needed to generate the VIB and Offline Bundle files. It relies on the [lamw/vibauthor](https://hub.docker.com/r/lamw/vibauthor/) Docker container and uses the files in this repository.
After copying all files to the container, `create_vib.sh` runs in the container to actually build the ESXi bundle.
Here is a sample output of the script:
```bash
/bin/bash ./build.sh
Untagged: letsencrypt-esxi:latest
Deleted: sha256:3009ff3662db9c3b60157bc0fff1a0c936ec6e301103c5efc50eca113c744b5f
Deleted: sha256:daff819de772ed33d7de07701d8235453872365586a49c503f5194555424cda1
Deleted: sha256:e0f946d4136a08d7d87bbce58af17226b019cbd97f3fec018861f155ded84257
Sending build context to Docker daemon 1.261MB
Step 1/4 : FROM lamw/vibauthor
---> a673ffe4ba43
Step 2/4 : COPY . letsencrypt-esxi
---> 6197d7c06029
Step 3/4 : RUN /bin/bash letsencrypt-esxi/build/create_vib.sh
---> Running in 3f6f149cfed4
WARNING: extensibility rules check failed, but was ignored because of --force.
VIB (web-wack-creations_bootbank_w2c-letsencrypt-esxi_1.0.0-0.0.0) failed a check of extensibility rules for acceptance level 'community': [u'(line 23: col 0) Element vib failed to validate content'].
Successfully created w2c-letsencrypt-esxi.vib.
Successfully created w2c-letsencrypt-esxi-offline-bundle.zip.
**** Info for VIB: w2c-letsencrypt-esxi.vib ****
VIB Format: 2.0.0
VIB ID: web-wack-creations_bootbank_w2c-letsencrypt-esxi_1.0.0-0.0.0
VIB Type: bootbank
Name: w2c-letsencrypt-esxi
Version: 1.0.0-0.0.0
Vendor: web-wack-creations
Summary: [Fling] Let's Encrypt for ESXi
Description: Let's Encrypt for ESXi
Creation Date: 2022-05-29 15:03:02+00:00
Provides:
w2c-letsencrypt-esxi = 1.0.0-0.0.0
Depends:
Conflicts:
Replaces:
w2c-letsencrypt-esxi << 1.0.0-0.0.0
Software Tags: []
MaintenanceMode: remove/update: False, installation: False
Signed: False
AcceptanceLevel: community
LiveInstallAllowed: True
LiveRemoveAllowed: True
CimomRestart: False
StatelessReady: True
Overlay: False
Payloads:
Name Type Boot Size Checksums
payload1 vgz 0 26555 sha-256 5df898d1217a9167e2e9f7d8e8d2e2a21bcd1acad0f7b74fa9d793c85e728bf3
sha-1 76834e1ea72f6e306d10a411eccc777faa2e8ddf
Removing intermediate container 3f6f149cfed4
---> f2f14c706557
Step 4/4 : CMD ["/bin/bash"]
---> Running in fc567d964e69
Removing intermediate container fc567d964e69
---> 5c3b069e2f7a
Successfully built 5c3b069e2f7a
Successfully tagged letsencrypt-esxi:latest
```
Upon success, there should be a new directory named `artifacts` which contains the resulting VIB and Offline Bundle files.
```bash
ls -l ../artifacts
-rw-r--r-- 1 root root 30K May 29 15:04 w2c-letsencrypt-esxi-offline-bundle.zip
-rw-r--r-- 1 root root 28K May 29 15:04 w2c-letsencrypt-esxi.vib
```
## Possible Pitfalls
As the [lamw/vibauthor](https://hub.docker.com/r/lamw/vibauthor/) container builds on CentOS 6, Docker requires a specific `vsyscall` setting to be set in the kernel of the host system that might no longer be the case if a more recent Linux kernel is used. E.g., on a recent version of Debian, running the container will result in a SegFault due to [bug 852620](https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=852620). If you encounter this problem, it can be [fixed](https://salsa.debian.org/kernel-team/linux/commit/74f87b226a1267b837d98a5d46824f9b5629962e) by setting `vsyscall=emulate`:
`vi /etc/default/grub`
```bash
GRUB_CMDLINE_LINUX_DEFAULT="quiet vsyscall=emulate"
```
```bash
update-grub
reboot
```

15
build/build.sh Normal file
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@@ -0,0 +1,15 @@
#!/bin/bash
#
# Copyright (c) Johannes Feichtner <johannes@web-wack.at>
#
# Script to build letsencrypt-esxi VIB using VIB Author
LOCALDIR=$(dirname "$(readlink -f "$0")")
cd "${LOCALDIR}/.." || exit
docker rmi -f letsencrypt-esxi 2> /dev/null
rm -rf artifacts
docker build -t letsencrypt-esxi -f build/Dockerfile .
docker run -i -v "${PWD}"/artifacts:/artifacts letsencrypt-esxi sh << COMMANDS
cp letsencrypt-esxi/build/w2c-letsencrypt-esxi* /artifacts
COMMANDS

95
build/create_vib.sh Normal file
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@@ -0,0 +1,95 @@
#!/bin/bash
#
# Copyright (c) Johannes Feichtner <johannes@web-wack.at>
#
# Script to build letsencrypt-esxi VIB using VIB Author
LOCALDIR=$(dirname "$(readlink -f "$0")")
TEMP_DIR=/tmp/letsencrypt-esxi-$$
# Ensure prerequisites are installed
git version > /dev/null 2>&1
if [ $? -eq 1 ]; then
echo "git not installed, exiting..."
exit 1
fi
vibauthor --version > /dev/null 2>&1
if [ $? -eq 1 ]; then
echo "vibauthor not installed, exiting .."
exit 1
fi
# Define VIB metadata
cd "${LOCALDIR}" || exit
VIB_DATE=$(date --date="$(git log -n1 --format="%cd" --date="iso")" '+%Y-%m-%dT%H:%I:%S')
VIB_TAG=$(git describe --tags --abbrev=0 --match '[0-9]*.[0-9]*.[0-9]*' 2> /dev/null || echo 0.0.1)
# Setting up VIB spec confs
VIB_DESC_FILE=${TEMP_DIR}/descriptor.xml
VIB_PAYLOAD_DIR=${TEMP_DIR}/payloads/payload1
# Create letsencrypt-esxi temp dir
mkdir -p ${TEMP_DIR}
# Create VIB spec payload directory
mkdir -p ${VIB_PAYLOAD_DIR}
# Create letsencrypt-esxi VIB descriptor.xml
cat > ${VIB_DESC_FILE} << __W2C__
<vib version="5.0">
<type>bootbank</type>
<name>w2c-letsencrypt-esxi</name>
<version>${VIB_TAG}-0.0.0</version>
<vendor>web-wack-creations</vendor>
<summary>Let's Encrypt for ESXi</summary>
<description>Let's Encrypt for ESXi</description>
<release-date>${VIB_DATE}</release-date>
<urls>
<url key="letsencrypt-esxi">https://github.com/w2c/letsencrypt-esxi</url>
</urls>
<relationships>
<depends/>
<conflicts/>
<replaces/>
<provides/>
<compatibleWith/>
</relationships>
<software-tags/>
<system-requires>
<maintenance-mode>false</maintenance-mode>
</system-requires>
<file-list>
</file-list>
<acceptance-level>community</acceptance-level>
<live-install-allowed>true</live-install-allowed>
<live-remove-allowed>true</live-remove-allowed>
<cimom-restart>false</cimom-restart>
<stateless-ready>true</stateless-ready>
<overlay>false</overlay>
<payloads>
<payload name="payload1" type="vgz"></payload>
</payloads>
</vib>
__W2C__
# Create target directory
BIN_DIR=${VIB_PAYLOAD_DIR}/opt/w2c-letsencrypt
INIT_DIR=${VIB_PAYLOAD_DIR}/etc/init.d
mkdir -p ${BIN_DIR} ${INIT_DIR}
# Copy files to the corresponding locations
cp ../* ${BIN_DIR} 2>/dev/null
cp ../w2c-letsencrypt ${INIT_DIR}
# Ensure that shell scripts are executable
chmod +x ${INIT_DIR}/w2c-letsencrypt ${BIN_DIR}/renew.sh
# Create letsencrypt-esxi VIB + offline bundle
vibauthor -C -t ${TEMP_DIR} -v w2c-letsencrypt-esxi.vib -O w2c-letsencrypt-esxi-offline-bundle.zip -f
# Show some details about what we have just created
vibauthor -i -v w2c-letsencrypt-esxi.vib
# Remove letsencrypt-esxi temp dir
rm -rf ${TEMP_DIR}

45
ca-certificates.crt Normal file
View File

@@ -0,0 +1,45 @@
-----BEGIN CERTIFICATE-----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=
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

350
openssl.cnf Normal file
View File

@@ -0,0 +1,350 @@
#
# OpenSSL example configuration file.
# This is mostly being used for generation of certificate requests.
#
# Note that you can include other files from the main configuration
# file using the .include directive.
#.include filename
# This definition stops the following lines choking if HOME isn't
# defined.
HOME = .
# Extra OBJECT IDENTIFIER info:
#oid_file = $ENV::HOME/.oid
oid_section = new_oids
# To use this configuration file with the "-extfile" option of the
# "openssl x509" utility, name here the section containing the
# X.509v3 extensions to use:
# extensions =
# (Alternatively, use a configuration file that has only
# X.509v3 extensions in its main [= default] section.)
[ new_oids ]
# We can add new OIDs in here for use by 'ca', 'req' and 'ts'.
# Add a simple OID like this:
# testoid1=1.2.3.4
# Or use config file substitution like this:
# testoid2=${testoid1}.5.6
# Policies used by the TSA examples.
tsa_policy1 = 1.2.3.4.1
tsa_policy2 = 1.2.3.4.5.6
tsa_policy3 = 1.2.3.4.5.7
####################################################################
[ ca ]
default_ca = CA_default # The default ca section
####################################################################
[ CA_default ]
dir = ./demoCA # Where everything is kept
certs = $dir/certs # Where the issued certs are kept
crl_dir = $dir/crl # Where the issued crl are kept
database = $dir/index.txt # database index file.
#unique_subject = no # Set to 'no' to allow creation of
# several certs with same subject.
new_certs_dir = $dir/newcerts # default place for new certs.
certificate = $dir/cacert.pem # The CA certificate
serial = $dir/serial # The current serial number
crlnumber = $dir/crlnumber # the current crl number
# must be commented out to leave a V1 CRL
crl = $dir/crl.pem # The current CRL
private_key = $dir/private/cakey.pem# The private key
x509_extensions = usr_cert # The extensions to add to the cert
# Comment out the following two lines for the "traditional"
# (and highly broken) format.
name_opt = ca_default # Subject Name options
cert_opt = ca_default # Certificate field options
# Extension copying option: use with caution.
# copy_extensions = copy
# Extensions to add to a CRL. Note: Netscape communicator chokes on V2 CRLs
# so this is commented out by default to leave a V1 CRL.
# crlnumber must also be commented out to leave a V1 CRL.
# crl_extensions = crl_ext
default_days = 365 # how long to certify for
default_crl_days= 30 # how long before next CRL
default_md = default # use public key default MD
preserve = no # keep passed DN ordering
# A few difference way of specifying how similar the request should look
# For type CA, the listed attributes must be the same, and the optional
# and supplied fields are just that :-)
policy = policy_match
# For the CA policy
[ policy_match ]
countryName = match
stateOrProvinceName = match
organizationName = match
organizationalUnitName = optional
commonName = supplied
emailAddress = optional
# For the 'anything' policy
# At this point in time, you must list all acceptable 'object'
# types.
[ policy_anything ]
countryName = optional
stateOrProvinceName = optional
localityName = optional
organizationName = optional
organizationalUnitName = optional
commonName = supplied
emailAddress = optional
####################################################################
[ req ]
default_bits = 2048
default_keyfile = privkey.pem
distinguished_name = req_distinguished_name
attributes = req_attributes
x509_extensions = v3_ca # The extensions to add to the self signed cert
# Passwords for private keys if not present they will be prompted for
# input_password = secret
# output_password = secret
# This sets a mask for permitted string types. There are several options.
# default: PrintableString, T61String, BMPString.
# pkix : PrintableString, BMPString (PKIX recommendation before 2004)
# utf8only: only UTF8Strings (PKIX recommendation after 2004).
# nombstr : PrintableString, T61String (no BMPStrings or UTF8Strings).
# MASK:XXXX a literal mask value.
# WARNING: ancient versions of Netscape crash on BMPStrings or UTF8Strings.
string_mask = utf8only
# req_extensions = v3_req # The extensions to add to a certificate request
[ req_distinguished_name ]
countryName = Country Name (2 letter code)
countryName_default = AU
countryName_min = 2
countryName_max = 2
stateOrProvinceName = State or Province Name (full name)
stateOrProvinceName_default = Some-State
localityName = Locality Name (eg, city)
0.organizationName = Organization Name (eg, company)
0.organizationName_default = Internet Widgits Pty Ltd
# we can do this but it is not needed normally :-)
#1.organizationName = Second Organization Name (eg, company)
#1.organizationName_default = World Wide Web Pty Ltd
organizationalUnitName = Organizational Unit Name (eg, section)
#organizationalUnitName_default =
commonName = Common Name (e.g. server FQDN or YOUR name)
commonName_max = 64
emailAddress = Email Address
emailAddress_max = 64
# SET-ex3 = SET extension number 3
[ req_attributes ]
challengePassword = A challenge password
challengePassword_min = 4
challengePassword_max = 20
unstructuredName = An optional company name
[ usr_cert ]
# These extensions are added when 'ca' signs a request.
# This goes against PKIX guidelines but some CAs do it and some software
# requires this to avoid interpreting an end user certificate as a CA.
basicConstraints=CA:FALSE
# Here are some examples of the usage of nsCertType. If it is omitted
# the certificate can be used for anything *except* object signing.
# This is OK for an SSL server.
# nsCertType = server
# For an object signing certificate this would be used.
# nsCertType = objsign
# For normal client use this is typical
# nsCertType = client, email
# and for everything including object signing:
# nsCertType = client, email, objsign
# This is typical in keyUsage for a client certificate.
# keyUsage = nonRepudiation, digitalSignature, keyEncipherment
# This will be displayed in Netscape's comment listbox.
nsComment = "OpenSSL Generated Certificate"
# PKIX recommendations harmless if included in all certificates.
subjectKeyIdentifier=hash
authorityKeyIdentifier=keyid,issuer
# This stuff is for subjectAltName and issuerAltname.
# Import the email address.
# subjectAltName=email:copy
# An alternative to produce certificates that aren't
# deprecated according to PKIX.
# subjectAltName=email:move
# Copy subject details
# issuerAltName=issuer:copy
#nsCaRevocationUrl = http://www.domain.dom/ca-crl.pem
#nsBaseUrl
#nsRevocationUrl
#nsRenewalUrl
#nsCaPolicyUrl
#nsSslServerName
# This is required for TSA certificates.
# extendedKeyUsage = critical,timeStamping
[ v3_req ]
# Extensions to add to a certificate request
basicConstraints = CA:FALSE
keyUsage = nonRepudiation, digitalSignature, keyEncipherment
[ v3_ca ]
# Extensions for a typical CA
# PKIX recommendation.
subjectKeyIdentifier=hash
authorityKeyIdentifier=keyid:always,issuer
basicConstraints = critical,CA:true
# Key usage: this is typical for a CA certificate. However since it will
# prevent it being used as an test self-signed certificate it is best
# left out by default.
# keyUsage = cRLSign, keyCertSign
# Some might want this also
# nsCertType = sslCA, emailCA
# Include email address in subject alt name: another PKIX recommendation
# subjectAltName=email:copy
# Copy issuer details
# issuerAltName=issuer:copy
# DER hex encoding of an extension: beware experts only!
# obj=DER:02:03
# Where 'obj' is a standard or added object
# You can even override a supported extension:
# basicConstraints= critical, DER:30:03:01:01:FF
[ crl_ext ]
# CRL extensions.
# Only issuerAltName and authorityKeyIdentifier make any sense in a CRL.
# issuerAltName=issuer:copy
authorityKeyIdentifier=keyid:always
[ proxy_cert_ext ]
# These extensions should be added when creating a proxy certificate
# This goes against PKIX guidelines but some CAs do it and some software
# requires this to avoid interpreting an end user certificate as a CA.
basicConstraints=CA:FALSE
# Here are some examples of the usage of nsCertType. If it is omitted
# the certificate can be used for anything *except* object signing.
# This is OK for an SSL server.
# nsCertType = server
# For an object signing certificate this would be used.
# nsCertType = objsign
# For normal client use this is typical
# nsCertType = client, email
# and for everything including object signing:
# nsCertType = client, email, objsign
# This is typical in keyUsage for a client certificate.
# keyUsage = nonRepudiation, digitalSignature, keyEncipherment
# This will be displayed in Netscape's comment listbox.
nsComment = "OpenSSL Generated Certificate"
# PKIX recommendations harmless if included in all certificates.
subjectKeyIdentifier=hash
authorityKeyIdentifier=keyid,issuer
# This stuff is for subjectAltName and issuerAltname.
# Import the email address.
# subjectAltName=email:copy
# An alternative to produce certificates that aren't
# deprecated according to PKIX.
# subjectAltName=email:move
# Copy subject details
# issuerAltName=issuer:copy
#nsCaRevocationUrl = http://www.domain.dom/ca-crl.pem
#nsBaseUrl
#nsRevocationUrl
#nsRenewalUrl
#nsCaPolicyUrl
#nsSslServerName
# This really needs to be in place for it to be a proxy certificate.
proxyCertInfo=critical,language:id-ppl-anyLanguage,pathlen:3,policy:foo
####################################################################
[ tsa ]
default_tsa = tsa_config1 # the default TSA section
[ tsa_config1 ]
# These are used by the TSA reply generation only.
dir = ./demoCA # TSA root directory
serial = $dir/tsaserial # The current serial number (mandatory)
crypto_device = builtin # OpenSSL engine to use for signing
signer_cert = $dir/tsacert.pem # The TSA signing certificate
# (optional)
certs = $dir/cacert.pem # Certificate chain to include in reply
# (optional)
signer_key = $dir/private/tsakey.pem # The TSA private key (optional)
signer_digest = sha256 # Signing digest to use. (Optional)
default_policy = tsa_policy1 # Policy if request did not specify it
# (optional)
other_policies = tsa_policy2, tsa_policy3 # acceptable policies (optional)
digests = sha1, sha256, sha384, sha512 # Acceptable message digests (mandatory)
accuracy = secs:1, millisecs:500, microsecs:100 # (optional)
clock_precision_digits = 0 # number of digits after dot. (optional)
ordering = yes # Is ordering defined for timestamps?
# (optional, default: no)
tsa_name = yes # Must the TSA name be included in the reply?
# (optional, default: no)
ess_cert_id_chain = no # Must the ESS cert id chain be included?
# (optional, default: no)
ess_cert_id_alg = sha1 # algorithm to compute certificate
# identifier (optional, default: sha1)

106
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@@ -0,0 +1,106 @@
#!/bin/sh
#
# Copyright (c) Johannes Feichtner <johannes@web-wack.at>
# Released under the GNU GPLv3 License.
DOMAIN=$(grep "adv/Misc/HostName" /etc/vmware/esx.conf | awk '{print $3}' | xargs)
LOCALDIR=$(dirname "$(readlink -f "$0")")
LOCALSCRIPT=$(basename "$0")
ACMEDIR="$LOCALDIR/.well-known/acme-challenge"
DIRECTORY_URL="https://acme-v02.api.letsencrypt.org/directory"
SSL_CERT_FILE="$LOCALDIR/ca-certificates.crt"
RENEW_DAYS=30
ACCOUNTKEY="esxi_account.key"
KEY="esxi.key"
CSR="esxi.csr"
CRT="esxi.crt"
VMWARE_CRT="/etc/vmware/ssl/rui.crt"
VMWARE_KEY="/etc/vmware/ssl/rui.key"
if [ -r "$LOCALDIR/renew.cfg" ]; then
. "$LOCALDIR/renew.cfg"
fi
log() {
echo "$@"
logger -p daemon.info -t "$0" "$@"
}
log "Starting certificate renewal.";
# Preparation steps
if [ -z "$DOMAIN" ] || [ "$DOMAIN" = "${DOMAIN/.}" ]; then
log "Error: Hostname ${DOMAIN} is no FQDN."
exit
fi
# Add a cronjob for auto renewal. The script is run once a week on Sunday at 00:00
if ! grep -q "$LOCALDIR/$LOCALSCRIPT" /var/spool/cron/crontabs/root; then
kill -sighup "$(pidof crond)" 2>/dev/null
echo "0 0 * * 0 /bin/sh $LOCALDIR/$LOCALSCRIPT" >> /var/spool/cron/crontabs/root
crond
fi
# Check issuer and expiration date of existing cert
if [ -e "$VMWARE_CRT" ]; then
# If the cert is issued for a different hostname, request a new one
SAN=$(openssl x509 -in "$VMWARE_CRT" -text -noout | grep DNS: | sed 's/DNS://g' | xargs)
if [ "$SAN" != "$DOMAIN" ] ; then
log "Existing cert issued for ${SAN} but current domain name is ${DOMAIN}. Requesting a new one!"
# If the cert is issued by Let's Encrypt, check its expiration date, otherwise request a new one
elif openssl x509 -in "$VMWARE_CRT" -issuer -noout | grep -q "O=Let's Encrypt"; then
CERT_VALID=$(openssl x509 -enddate -noout -in "$VMWARE_CRT" | cut -d= -f2-)
log "Existing Let's Encrypt cert valid until: ${CERT_VALID}"
if openssl x509 -checkend $((RENEW_DAYS * 86400)) -noout -in "$VMWARE_CRT"; then
log "=> Longer than ${RENEW_DAYS} days. Aborting."
exit
else
log "=> Less than ${RENEW_DAYS} days. Renewing!"
fi
else
log "Existing cert for ${DOMAIN} not issued by Let's Encrypt. Requesting a new one!"
fi
fi
cd "$LOCALDIR" || exit
mkdir -p "$ACMEDIR"
# Route /.well-known/acme-challenge to port 8120
if ! grep -q "acme-challenge" /etc/vmware/rhttpproxy/endpoints.conf; then
echo "/.well-known/acme-challenge local 8120 redirect allow" >> /etc/vmware/rhttpproxy/endpoints.conf
/etc/init.d/rhttpproxy restart
fi
# Cert Request
[ ! -r "$ACCOUNTKEY" ] && openssl genrsa 4096 > "$ACCOUNTKEY"
openssl genrsa -out "$KEY" 4096
openssl req -new -sha256 -key "$KEY" -subj "/CN=$DOMAIN" -config "./openssl.cnf" > "$CSR"
chmod 0400 "$ACCOUNTKEY" "$KEY"
# Start HTTP server on port 8120 for HTTP validation
esxcli network firewall ruleset set -e true -r httpClient
python -m "http.server" 8120 &
HTTP_SERVER_PID=$!
# Retrieve the certificate
export SSL_CERT_FILE
CERT=$(python ./acme_tiny.py --account-key "$ACCOUNTKEY" --csr "$CSR" --acme-dir "$ACMEDIR" --directory-url "$DIRECTORY_URL")
kill -9 "$HTTP_SERVER_PID"
# If an error occurred during certificate issuance, $CERT will be empty
if [ -n "$CERT" ] ; then
echo "$CERT" > "$CRT"
# Provide the certificate to ESXi
cp -p "$LOCALDIR/$KEY" "$VMWARE_KEY"
cp -p "$LOCALDIR/$CRT" "$VMWARE_CRT"
log "Success: Obtained and installed a certificate from Let's Encrypt."
else
log "Error: No cert obtained from Let's Encrypt. Generating a self-signed certificate."
/sbin/generate-certificates
fi
for s in /etc/init.d/*; do if $s | grep ssl_reset > /dev/null; then $s ssl_reset; fi; done

59
w2c-letsencrypt Normal file
View File

@@ -0,0 +1,59 @@
#!/bin/sh
#
# Copyright (c) Johannes Feichtner <johannes@web-wack.at>
# Released under the GNU GPLv3 License.
#
# chkconfig: on 99 99
# description: Letsencrypt for ESXi
#
export PATH=/sbin:/usr/sbin:/bin:/usr/bin
log() {
echo "$@"
logger -p daemon.info -t "$0" "$@"
}
for action in "$@"; do
log "Running '${action}' action";
case "$action" in
start)
/opt/w2c-letsencrypt/renew.sh
;;
remove)
sed -i '/\/opt\/w2c-letsencrypt/d' /var/spool/cron/crontabs/root
sed -i '/acme-challenge/d' /etc/vmware/rhttpproxy/endpoints.conf
/sbin/generate-certificates
for s in /etc/init.d/*; do if $s | grep ssl_reset > /dev/null; then $s ssl_reset; fi; done
;;
stop)
true
;;
status)
true
;;
install)
true
;;
upgrade)
true
;;
restart)
"$0" stop
"$0" start
;;
*)
echo "Usage: $(basename "$0") {start|stop|status|restart}"
exit 1
esac
done
exit 0