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bitwarden-server/util/Setup/NginxConfigBuilder.cs
2018-03-08 17:31:51 -05:00

201 lines
6.4 KiB
C#

using System;
using System.IO;
namespace Bit.Setup
{
public class NginxConfigBuilder
{
private const string SslCiphers =
"ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:" +
"DHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA:" +
"ECDHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES128-SHA256:DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA:" +
"ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES256-GCM-SHA384:AES128-GCM-SHA256:AES256-SHA256:" +
"AES128-SHA256:AES256-SHA:AES128-SHA:DES-CBC3-SHA:HIGH:!aNULL:!eNULL:!EXPORT:!DES:!MD5:!PSK:!RC4:@STRENGTH";
public NginxConfigBuilder(string domain, string url, bool ssl, bool selfSignedSsl, bool letsEncrypt)
{
Domain = domain;
Url = url;
Ssl = ssl;
SelfSignedSsl = selfSignedSsl;
LetsEncrypt = letsEncrypt;
}
public NginxConfigBuilder(string domain, string url)
{
Domain = domain;
Url = url;
}
public bool Ssl { get; private set; }
public bool SelfSignedSsl { get; private set; }
public bool LetsEncrypt { get; private set; }
public string Domain { get; private set; }
public string Url { get; private set; }
public bool DiffieHellman { get; private set; }
public bool Trusted { get; private set; }
public void BuildForInstaller()
{
if(Ssl && !SelfSignedSsl && !LetsEncrypt)
{
Console.Write("(!) Use Diffie Hellman ephemeral parameters for SSL (requires dhparam.pem)? (y/n): ");
DiffieHellman = Console.ReadLine().ToLowerInvariant() == "y";
}
else
{
DiffieHellman = LetsEncrypt;
}
if(Ssl && !SelfSignedSsl && !LetsEncrypt)
{
Console.Write("(!) Is this a trusted SSL certificate (requires ca.crt)? (y/n): ");
Trusted = Console.ReadLine().ToLowerInvariant() == "y";
}
else
{
Trusted = LetsEncrypt;
}
Build();
}
public void BuildForUpdater()
{
if(File.Exists("/bitwarden/nginx/default.conf"))
{
var confContent = File.ReadAllText("/bitwarden/nginx/default.conf");
Ssl = confContent.Contains("listen 443 ssl http2;");
SelfSignedSsl = confContent.Contains("/etc/ssl/self/");
LetsEncrypt = !SelfSignedSsl && confContent.Contains("/etc/letsencrypt/live/");
DiffieHellman = confContent.Contains("/dhparam.pem;");
Trusted = confContent.Contains("ssl_trusted_certificate ");
}
Build();
}
private void Build()
{
Directory.CreateDirectory("/bitwarden/nginx/");
var sslPath = LetsEncrypt ? $"/etc/letsencrypt/live/{Domain}" :
SelfSignedSsl ? $"/etc/ssl/self/{Domain}" : $"/etc/ssl/{Domain}";
var certFile = LetsEncrypt ? "fullchain.pem" : "certificate.crt";
var keyFile = LetsEncrypt ? "privkey.pem" : "private.key";
var caFile = LetsEncrypt ? "fullchain.pem" : "ca.crt";
Console.WriteLine("Building nginx config.");
using(var sw = File.CreateText("/bitwarden/nginx/default.conf"))
{
sw.WriteLine($@"# Config Parameters
# Parameter:Ssl={Ssl}
# Parameter:SelfSignedSsl={SelfSignedSsl}
# Parameter:LetsEncrypt={LetsEncrypt}
# Parameter:Domain={Domain}
# Parameter:Url={Url}
# Parameter:DiffieHellman={DiffieHellman}
# Parameter:Trusted={Trusted}
server {{
listen 80 default_server;
listen [::]:80 default_server;
server_name {Domain};");
if(Ssl)
{
sw.WriteLine($@" return 301 {Url}$request_uri;
}}
server {{
listen 443 ssl http2;
listen [::]:443 ssl http2;
server_name {Domain};
ssl_certificate {sslPath}/{certFile};
ssl_certificate_key {sslPath}/{keyFile};
ssl_session_timeout 30m;
ssl_session_cache shared:SSL:20m;
ssl_session_tickets off;");
if(DiffieHellman)
{
sw.WriteLine($@"
# Diffie-Hellman parameter for DHE ciphersuites, recommended 2048 bits
ssl_dhparam {sslPath}/dhparam.pem;");
}
sw.WriteLine($@"
# SSL protocols TLS v1~TLSv1.2 are allowed. Disabed SSLv3
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
# Disabled insecure ciphers suite. For example, MD5, DES, RC4, PSK
ssl_ciphers ""{SslCiphers}"";
# enables server-side protection from BEAST attacks
ssl_prefer_server_ciphers on;");
if(Trusted)
{
sw.WriteLine($@"
# OCSP Stapling ---
# fetch OCSP records from URL in ssl_certificate and cache them
ssl_stapling on;
ssl_stapling_verify on;
## verify chain of trust of OCSP response using Root CA and Intermediate certs
ssl_trusted_certificate {sslPath}/{caFile};
resolver 8.8.8.8 8.8.4.4 208.67.222.222 208.67.220.220 valid=300s;
# This will enforce HTTP browsing into HTTPS and avoid ssl stripping attack. 6 months age
add_header Strict-Transport-Security max-age=15768000;");
}
}
sw.WriteLine($@"
# X-Frame-Options is to prevent from click-jacking attack
#add_header X-Frame-Options SAMEORIGIN;
# disable content-type sniffing on some browsers.
add_header X-Content-Type-Options nosniff;
# This header enables the Cross-site scripting (XSS) filter
add_header X-XSS-Protection ""1; mode=block"";
# This header controls what referrer information is shared
add_header Referrer-Policy same-origin;
# Content-Security-Policy is set via meta tag on the website so it is not included here");
sw.WriteLine($@"
location / {{
proxy_pass http://web/;
}}
location = /app-id.json {{
proxy_pass http://web/app-id.json;
proxy_hide_header Content-Type;
add_header Content-Type $fido_content_type;
}}
location /attachments/ {{
proxy_pass http://attachments/;
}}
location /api/ {{
proxy_pass http://api/;
}}
location /identity/ {{
proxy_pass http://identity/;
}}
location /icons/ {{
proxy_pass http://icons/;
}}
}}");
}
}
}
}