mailinabox/management/web_update.py

124 lines
4.2 KiB
Python

# Creates an nginx configuration file so we serve HTTP/HTTPS on all
# domains for which a mail account has been set up.
########################################################################
import os, os.path
from mailconfig import get_mail_domains
from utils import shell, safe_domain_name, sort_domains
def get_web_domains(env):
# What domains should we serve HTTP/HTTPS for?
domains = set()
# Add all domain names in use by email users and mail aliases.
domains |= get_mail_domains(env)
# Ensure the PUBLIC_HOSTNAME is in the list.
domains.add(env['PUBLIC_HOSTNAME'])
# Sort the list. Put PUBLIC_HOSTNAME first so it becomes the
# default server (nginx's default_server).
domains = sort_domains(domains, env)
return domains
def do_web_update(env):
# Build an nginx configuration file.
nginx_conf = ""
template = open(os.path.join(os.path.dirname(__file__), "../conf/nginx.conf")).read()
for domain in get_web_domains(env):
nginx_conf += make_domain_config(domain, template, env)
# Save the file.
with open("/etc/nginx/conf.d/local.conf", "w") as f:
f.write(nginx_conf)
# Nick nginx.
shell('check_call', ["/usr/sbin/service", "nginx", "restart"])
return "OK"
def make_domain_config(domain, template, env):
# How will we configure this domain.
# Where will its root directory be for static files?
root = get_web_root(domain, env)
# What private key and SSL certificate will we use for this domain?
ssl_key, ssl_certificate, csr_path = get_domain_ssl_files(domain, env)
# For hostnames created after the initial setup, ensure we have an SSL certificate
# available. Make a self-signed one now if one doesn't exist.
ensure_ssl_certificate_exists(domain, ssl_key, ssl_certificate, csr_path, env)
# Replace substitution strings in the template & return.
nginx_conf = template
nginx_conf = nginx_conf.replace("$HOSTNAME", domain)
nginx_conf = nginx_conf.replace("$ROOT", root)
nginx_conf = nginx_conf.replace("$SSL_KEY", ssl_key)
nginx_conf = nginx_conf.replace("$SSL_CERTIFICATE", ssl_certificate)
return nginx_conf
def get_web_root(domain, env):
# Try STORAGE_ROOT/web/domain_name if it exists, but fall back to STORAGE_ROOT/web/default.
for test_domain in (domain, 'default'):
root = os.path.join(env["STORAGE_ROOT"], "www", safe_domain_name(test_domain))
if os.path.exists(root): break
return root
def get_domain_ssl_files(domain, env):
# What SSL private key will we use? Allow the user to override this, but
# in many cases using the same private key for all domains would be fine.
# Don't allow the user to override the key for PUBLIC_HOSTNAME because
# that's what's in the main file.
ssl_key = os.path.join(env["STORAGE_ROOT"], 'ssl/ssl_private_key.pem')
alt_key = os.path.join(env["STORAGE_ROOT"], 'ssl/domains/%s_private_key.pem' % safe_domain_name(domain))
if domain != env['PUBLIC_HOSTNAME'] and os.path.exists(alt_key):
ssl_key = alt_key
# What SSL certificate will we use? This has to be differnet for each
# domain name. For PUBLIC_HOSTNAME, use the one we generated at set-up
# time.
if domain == env['PUBLIC_HOSTNAME']:
ssl_certificate = os.path.join(env["STORAGE_ROOT"], 'ssl/ssl_certificate.pem')
else:
ssl_certificate = os.path.join(env["STORAGE_ROOT"], 'ssl/domains/%s_certifiate.pem' % safe_domain_name(domain))
# Where would the CSR go?
csr_path = os.path.join(env["STORAGE_ROOT"], 'ssl/domains/%s_cert_sign_req.csr' % safe_domain_name(domain))
return ssl_key, ssl_certificate, csr_path
def ensure_ssl_certificate_exists(domain, ssl_key, ssl_certificate, csr_path, env):
# For domains besides PUBLIC_HOSTNAME, generate a self-signed certificate if one doesn't
# already exist. See setup/mail.sh for documentation.
if domain == env['PUBLIC_HOSTNAME']:
return
if os.path.exists(ssl_certificate):
return
os.makedirs(os.path.dirname(ssl_certificate), exist_ok=True)
# Generate a new self-signed certificate using the same private key that we already have.
# Start with a CSR.
shell("check_call", [
"openssl", "req", "-new",
"-key", ssl_key,
"-out", csr_path,
"-subj", "/C=%s/ST=/L=/O=/CN=%s" % (env["CSR_COUNTRY"], domain)])
# And then make the certificate.
shell("check_call", [
"openssl", "x509", "-req",
"-days", "365",
"-in", csr_path,
"-signkey", ssl_key,
"-out", ssl_certificate])