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provide redirects from www subdomains of zones to their parent domain

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* Split the nginx templates again so we have just the part needed to make a domain do a redirect separate from the rest.
* Add server blocks to the nginx config for these domains.
* List these domains in the SSL certificate install admin panel.
* Generate default 'www' records just for domains we provide default redirects for.

Fixes #321.
This commit is contained in:
Joshua Tauberer
2015-06-04 12:06:02 +00:00
parent 1d09e2406b
commit 95173bb327
6 changed files with 121 additions and 91 deletions
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19
management/dns_update.py
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@@ -57,13 +57,15 @@ def do_dns_update(env, force=False):
# Custom records to add to zones.
additional_records = list(get_custom_dns_config(env))
from web_update import get_default_www_redirects
www_redirect_domains = get_default_www_redirects(env)
# Write zone files.
os.makedirs('/etc/nsd/zones', exist_ok=True)
updated_domains = []
for i, (domain, zonefile) in enumerate(zonefiles):
# Build the records to put in the zone.
records = build_zone(domain, domains, additional_records, env)
records = build_zone(domain, domains, additional_records, www_redirect_domains, env)
# See if the zone has changed, and if so update the serial number
# and write the zone file.
@@ -126,7 +128,7 @@ def do_dns_update(env, force=False):
########################################################################
def build_zone(domain, all_domains, additional_records, env, is_zone=True):
def build_zone(domain, all_domains, additional_records, www_redirect_domains, env, is_zone=True):
records = []
# For top-level zones, define the authoritative name servers.
@@ -177,7 +179,7 @@ def build_zone(domain, all_domains, additional_records, env, is_zone=True):
subdomains = [d for d in all_domains if d.endswith("." + domain)]
for subdomain in subdomains:
subdomain_qname = subdomain[0:-len("." + domain)]
subzone = build_zone(subdomain, [], additional_records, env, is_zone=False)
subzone = build_zone(subdomain, [], additional_records, www_redirect_domains, env, is_zone=False)
for child_qname, child_rtype, child_value, child_explanation in subzone:
if child_qname == None:
child_qname = subdomain_qname
@@ -215,10 +217,13 @@ def build_zone(domain, all_domains, additional_records, env, is_zone=True):
has_rec_base = records
defaults = [
(None, "A", env["PUBLIC_IP"], "Required. May have a different value. Sets the IP address that %s resolves to for web hosting and other services besides mail. The A record must be present but its value does not affect mail delivery." % domain),
("www", "A", env["PUBLIC_IP"], "Optional. Sets the IP address that www.%s resolves to, e.g. for web hosting." % domain),
(None, "AAAA", env.get('PUBLIC_IPV6'), "Optional. Sets the IPv6 address that %s resolves to, e.g. for web hosting. (It is not necessary for receiving mail on this domain.)" % domain),
("www", "AAAA", env.get('PUBLIC_IPV6'), "Optional. Sets the IPv6 address that www.%s resolves to, e.g. for web hosting." % domain),
]
if "www." + domain in www_redirect_domains:
defaults += [
("www", "A", env["PUBLIC_IP"], "Optional. Sets the IP address that www.%s resolves to so that the box can provide a redirect to the parent domain." % domain),
("www", "AAAA", env.get('PUBLIC_IPV6'), "Optional. Sets the IPv6 address that www.%s resolves to so that the box can provide a redirect to the parent domain." % domain),
]
for qname, rtype, value, explanation in defaults:
if value is None or value.strip() == "": continue # skip IPV6 if not set
if not is_zone and qname == "www": continue # don't create any default 'www' subdomains on what are themselves subdomains
@@ -847,8 +852,10 @@ def build_recommended_dns(env):
domains = get_dns_domains(env)
zonefiles = get_dns_zones(env)
additional_records = list(get_custom_dns_config(env))
from web_update import get_default_www_redirects
www_redirect_domains = get_default_www_redirects(env)
for domain, zonefile in zonefiles:
records = build_zone(domain, domains, additional_records, env)
records = build_zone(domain, domains, additional_records, www_redirect_domains, env)
# remove records that we don't dislay
records = [r for r in records if r[3] is not False]