70c8481fd8
This will allow DNS plugin snaps to build if they rely on unreleased acme/certbot, and remove other copy of Certbot from externally snapped plugins. Fixes #8064 and fixes #7946. Implementation is based on the design [here](https://github.com/certbot/certbot/issues/8064#issuecomment-645513120).
To test, see reverted commit 8632064. Steps taken:
- added changes to setup.py and snapcraft.yaml
- successfully snapped, connected, ran `sudo certbot plugins --prepare`
- added temporary changes to have both certbot and certbot-dns-dnsimple use DNSAuthenticator2
- snapped and installed certbot, `certbot plugins` failed as expected.
- snapped and installed certbot-dns-dnsimple, `sudo certbot plugins --prepare` succeeded
- Inspected dns plugin's `bin` and `lib`; no `certbot` or `acme`, as expected.
```
$ ls /snap/certbot-dns-dnsimple/current/lib/python3.6/site-packages/
OpenSSL future-0.18.2.dist-info requests_file.py
PyYAML-5.3.1.dist-info idna setuptools
_cffi_backend.cpython-36m-x86_64-linux-gnu.so idna-2.9.dist-info setuptools-47.3.1.dist-info
certbot_dns_dnsimple lexicon six-1.15.0.dist-info
certbot_dns_dnsimple-1.6.0.dev0-py3.6.egg-info libfuturize six.py
certifi libpasteurize tldextract
certifi-2020.4.5.1.dist-info past tldextract-2.2.2.dist-info
cffi pip urllib3
cffi-1.14.0.dist-info pip-20.1.1.dist-info urllib3-1.25.9.dist-info
chardet pkg_resources wheel
chardet-3.0.4.dist-info pyOpenSSL-19.1.0.dist-info wheel-0.34.2.dist-info
cryptography pycparser yaml
cryptography-2.8.dist-info pycparser-2.20.dist-info zope
dns_lexicon-3.3.26.dist-info requests zope.interface-5.1.0-py3.6-nspkg.pth
easy_install.py requests-2.23.0.dist-info zope.interface-5.1.0.dist-info
future requests_file-1.5.1.dist-info
$ ls /snap/certbot-dns-dnsimple/current/bin/
chardetect futurize lexicon pasteurize tldextract
```
- reset to HEAD^
- snapped and installed certbot to not have the DNSAuthenticator2 changes, `certbot plugins` failed as expected.
* Don't include certbot deps when EXCLUDE_CERTBOT_DEPS is set
* Set EXCLUDE_CERTBOT_DEPS in certbot-dns-dnsimple/snap/snapcraft.yaml
Certbot is part of EFF’s effort to encrypt the entire Internet. Secure communication over the Web relies on HTTPS, which requires the use of a digital certificate that lets browsers verify the identity of web servers (e.g., is that really google.com?). Web servers obtain their certificates from trusted third parties called certificate authorities (CAs). Certbot is an easy-to-use client that fetches a certificate from Let’s Encrypt—an open certificate authority launched by the EFF, Mozilla, and others—and deploys it to a web server.
Anyone who has gone through the trouble of setting up a secure website knows what a hassle getting and maintaining a certificate is. Certbot and Let’s Encrypt can automate away the pain and let you turn on and manage HTTPS with simple commands. Using Certbot and Let's Encrypt is free, so there’s no need to arrange payment.
How you use Certbot depends on the configuration of your web server. The best way to get started is to use our interactive guide. It generates instructions based on your configuration settings. In most cases, you’ll need root or administrator access to your web server to run Certbot.
Certbot is meant to be run directly on your web server, not on your personal computer. If you’re using a hosted service and don’t have direct access to your web server, you might not be able to use Certbot. Check with your hosting provider for documentation about uploading certificates or using certificates issued by Let’s Encrypt.
Certbot is a fully-featured, extensible client for the Let's Encrypt CA (or any other CA that speaks the ACME protocol) that can automate the tasks of obtaining certificates and configuring webservers to use them. This client runs on Unix-based operating systems.
To see the changes made to Certbot between versions please refer to our changelog.
Until May 2016, Certbot was named simply letsencrypt or
letsencrypt-auto, depending on install method. Instructions
on the Internet, and some pieces of the software, may still refer to
this older name.
Contributing
If you'd like to contribute to this project please read Developer Guide.
This project is governed by EFF's Public Projects Code of Conduct.
How to run the client
The easiest way to install and run Certbot is by visiting certbot.eff.org, where you can find the correct instructions for many web server and OS combinations. For more information, see Get Certbot.
Understanding the client in more depth
To understand what the client is doing in detail, it's important to understand the way it uses plugins. Please see the explanation of plugins in the User Guide.
Links
Documentation: https://certbot.eff.org/docs
Software project: https://github.com/certbot/certbot
Notes for developers: https://certbot.eff.org/docs/contributing.html
Main Website: https://certbot.eff.org
Let's Encrypt Website: https://letsencrypt.org
Community: https://community.letsencrypt.org
ACME spec: http://ietf-wg-acme.github.io/acme/
ACME working area in github: https://github.com/ietf-wg-acme/acme
System Requirements
See https://certbot.eff.org/docs/install.html#system-requirements.
Current Features
- Supports multiple web servers:
- apache/2.x
- nginx/0.8.48+
- webroot (adds files to webroot directories in order to prove control of domains and obtain certs)
- standalone (runs its own simple webserver to prove you control a domain)
- other server software via third party plugins
- The private key is generated locally on your system.
- Can talk to the Let's Encrypt CA or optionally to other ACME compliant services.
- Can get domain-validated (DV) certificates.
- Can revoke certificates.
- Adjustable RSA key bit-length (2048 (default), 4096, ...).
- Can optionally install a http -> https redirect, so your site effectively runs https only (Apache only)
- Fully automated.
- Configuration changes are logged and can be reverted.
- Supports an interactive text UI, or can be driven entirely from the command line.
- Free and Open Source Software, made with Python.
For extensive documentation on using and contributing to Certbot, go to https://certbot.eff.org/docs. If you would like to contribute to the project or run the latest code from git, you should read our developer guide.