337 lines
8.3 KiB
Python
337 lines
8.3 KiB
Python
import json
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import os
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import io
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import sys
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def forward(
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input_json,
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output_conf,
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):
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with io.open(
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input_json,
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'r'
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) as f:
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forward_nginx = json.load(f)
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with io.open(
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output_conf,
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'w'
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) as f:
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names = [o['app_name'] for o in forward_nginx]
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if not '' in names:
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forward_nginx.append(
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dict(
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app_name='',
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redirect_url='https://product-development-service.blogspot.com',
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)
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)
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sections = dict()
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for entry in forward_nginx:
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location_path = None
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if entry['app_name'] != '':
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location_path = '/%s/' % entry['app_name']
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else:
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location_path = '/'
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if 'server_name' in entry:
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server_name = entry['server_name']
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else:
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server_name = 'default_server'
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if not server_name in sections:
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sections[server_name] = []
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location_get = lambda location_body, location_path2, prefix=None,: (
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r'''
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location {location} {
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{location_body}
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}
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'''.replace(
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'{location_body}', location_body,
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).replace(
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'{location}', '%s %s' % (
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(
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'^~'
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if prefix is None
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else prefix
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),
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location_path2
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),
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)
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)
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if 'target_endpoint' in entry:
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location_body_get = lambda target_endpoint: \
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r'''
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proxy_set_header Host $http_host;
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proxy_set_header X-Forwarded-For $t1;
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proxy_set_header X-Forwarded-Proto $scheme;
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proxy_set_header Upgrade $http_upgrade;
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proxy_set_header Connection $connection_upgrade;
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proxy_redirect off;
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proxy_buffering off;
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proxy_pass {target_endpoint};
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'''.replace(
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'{target_endpoint}', target_endpoint,
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)
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if 'fallback_endpoint' in entry:
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fallback_name = '@fallback-%s' % os.urandom(10).hex()
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sections[server_name].append(
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location_get(
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location_body_get(entry['target_endpoint']) + r'''
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proxy_intercept_errors on;
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error_page 502 =200 {fallback_name};
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'''.replace(
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'{fallback_name}', fallback_name,
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),
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location_path,
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)
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)
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sections[server_name].append(
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location_get(
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location_body_get(entry['fallback_endpoint']),
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fallback_name,
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'',
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)
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)
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else:
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sections[server_name].append(
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location_get(
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location_body_get(entry['target_endpoint']),
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location_path,
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)
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)
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elif 'redirect_url' in entry:
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sections[server_name].append(
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location_get(
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r'''
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return 302 {redirect_url}$request_uri;
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'''.replace(
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'{redirect_url}', entry['redirect_url'],
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),
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location_path,
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)
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)
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else:
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raise NotImplementedError
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servers = []
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for server_name, current_sections in sections.items():
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servers.append(
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r'''
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server {
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set $t1 $remote_addr;
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if ($http_x_forwarded_for)
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{
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set $t1 $http_x_forwarded_for;
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}
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server_name {server_name};
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listen 80 {default_server};
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client_max_body_size 50M;
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{sections_config}
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}
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'''.replace(
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'{sections_config}', '\n'.join(current_sections)
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).replace(
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'{server_name}',
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(
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'_'
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if server_name == 'default_server'
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else server_name
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),
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).replace(
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'{default_server}',
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(
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''
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if not server_name == 'default_server'
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else server_name
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)
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)
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)
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f.write(r'''
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events {
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multi_accept on;
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worker_connections 64;
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}
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http {
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log_format main
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'[$time_local][$remote_addr:$remote_port, $http_x_forwarded_for, $t1, $http_host]'
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'[$request_length,$bytes_sent,$request_time]'
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'[$status][$request]'
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'[$http_user_agent][$http_referer]';
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access_log /dev/null combined;
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access_log /dev/stderr main;
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gzip on;
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server_tokens off;
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{servers_config}
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map $http_upgrade $connection_upgrade {
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default upgrade;
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'' close;
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}
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}
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'''.replace(
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'{servers_config}', '\n'.join(servers)
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))
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def ssl(input_json, output_conf):
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with io.open(
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input_json,
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'r'
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) as f:
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ssl_nginx = json.load(f)
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servers = []
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if 'default_server' in ssl_nginx:
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server = ssl_nginx['default_server']
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servers.append(
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r'''
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server {
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set $t1 $remote_addr;
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if ($http_x_forwarded_for)
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{
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set $t1 $http_x_forwarded_for;
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}
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listen 443 ssl default_server;
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server_name _;
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client_max_body_size {client_max_body_size};
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ssl_certificate {signed_chain_cert};
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ssl_certificate_key {domain_key};
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return 444;
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}
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'''.replace(
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'{signed_chain_cert}', server['signed_chain_cert'],
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).replace(
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'{client_max_body_size}', server['client_max_body_size'],
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).replace(
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'{domain_key}', server['domain_key'],
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)
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)
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for server in ssl_nginx['servers']:
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servers.append(
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r'''
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server {
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set $t1 $remote_addr;
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if ($http_x_forwarded_for)
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{
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set $t1 $http_x_forwarded_for;
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}
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listen 80;
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server_name {server_names};
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client_max_body_size {client_max_body_size};
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location ~ ^/.well-known/acme-challenge/ {
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alias /var/www/;
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try_files $uri =404;
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}
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location ~ {
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#return 444;
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return 301 https://$host$request_uri;
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}
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}
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server {
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set $t1 $remote_addr;
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if ($http_x_forwarded_for)
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{
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set $t1 $http_x_forwarded_for;
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}
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listen 443 ssl;
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server_name {server_names};
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client_max_body_size {client_max_body_size};
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ssl_certificate {signed_chain_cert};
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ssl_certificate_key {domain_key};
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location ^~ / {
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proxy_set_header Host $http_host;
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
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proxy_set_header X-Forwarded-Proto $scheme;
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proxy_set_header Upgrade $http_upgrade;
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proxy_set_header Connection $connection_upgrade;
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proxy_redirect off;
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proxy_buffering off;
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proxy_pass http://app:80;
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}
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}
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'''.replace(
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'{server_names}', ' '.join(server['server_names'])
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).replace(
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'{signed_chain_cert}', server['signed_chain_cert'],
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).replace(
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'{client_max_body_size}', server['client_max_body_size'],
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).replace(
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'{domain_key}', server['domain_key'],
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)
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)
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with io.open(
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output_conf,
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'w'
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) as f:
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f.write(
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r'''
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events {
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multi_accept on;
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worker_connections 64;
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}
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http {
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log_format main
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'[$time_local][$remote_addr:$remote_port, $http_x_forwarded_for, $t1, $http_host]'
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'[$request_length,$bytes_sent,$request_time]'
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'[$status][$request]'
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'[$http_user_agent][$http_referer]';
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access_log /dev/null combined;
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access_log /dev/stderr main;
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gzip on;
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server_tokens off;
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{servers}
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map $http_upgrade $connection_upgrade {
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default upgrade;
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'' close;
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}
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}
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'''.replace('{servers}', '\n'.join(servers))
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)
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if __name__ == '__main__':
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if len(sys.argv) >= 2 and sys.argv[1] == 'ssl':
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ssl(*sys.argv[2:])
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else:
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forward(*sys.argv[1:])
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