add experimental custom domain support

.gitignore

@@ -19,3 +19,4 @@ doc/
 tests/coverage
 config.yml
 .DS_Store
+domains

app.rb

@@ -503,6 +503,33 @@ get '/password_reset_confirm' do
   redirect '/'
 end
 
+get '/custom_domain' do
+  slim :custom_domain
+end
+
+post '/custom_domain' do
+  require_login
+  original_domain = current_site.domain
+  current_site.domain = params[:domain]
+  if current_site.valid?
+    
+    DB.transaction do
+      current_site.save
+      
+      if !params[:domain].empty? && !params[:domain].nil?
+        File.open(File.join(DIR_ROOT, 'domains', "#{current_site.username}.conf"), 'w') do |file|
+          file.write erb(:'templates/domain', layout: false)
+        end
+      end
+      
+    end
+    flash[:success] = 'The domain has been successfully updated.'
+    redirect '/custom_domain'
+  else
+    slim :custom_domain
+  end
+end
+
 get '/contact' do
   slim :'contact'
 end

migrations/008_add_nsfw_flag.rb

@@ -4,6 +4,6 @@ Sequel.migration do
   }
 
   down {
-    DB.add_column :sites, :is_nsfw
+    DB.drop_column :sites, :is_nsfw
   }
 end

migrations/017_add_domain.rb

@@ -0,0 +1,9 @@
+Sequel.migration do
+  up {
+    DB.add_column :sites, :domain, :text, default: nil
+  }
+
+  down {
+    DB.drop_column :sites, :domain
+  }
+end

models/site.rb

@@ -95,6 +95,13 @@ class Site < Sequel::Model
     if values[:password].nil? || (@password_length && @password_length < MINIMUM_PASSWORD_LENGTH)
       errors.add :password, "Password must be at least #{MINIMUM_PASSWORD_LENGTH} characters."
     end
+    
+    if !values[:domain].nil? && !values[:domain].empty?
+      if !(values[:domain] =~ /^[a-zA-Z0-9]+\.[a-zA-Z0-9]+$/i)
+        errors.add :domain, "Domain provided is not valid. Must take the form of domain.com"
+      end
+    end
+    
   end
 
   def file_path

views/custom_domain.slim

@@ -0,0 +1,27 @@
+.page
+  .content
+
+    h1.txt-Center Custom Domain
+    h3.txt-Center (advanced)
+
+    .txt-Center
+      - if !current_site.errors.empty?
+        .alert.alert-block.alert-error
+          - current_site.errors.each do |error|
+            p = error.last.first
+
+    .row.c-Row
+      .col.col-66
+        .content
+      
+          p Adding a custom domain allows you to have a domain name attached to your web site. So if you had a domain like <strong>catsknitting.com</strong>, you could have it point to your NeoCities site!
+          p You will have to purchase a domain name from a registrar like <a href="https://namecheap.com" target="_blank">Namecheap</a>, and then add an A record to point your domain (catsknitting.com) to the following IP address:
+          p <code>5.9.136.200</code>
+          p If you want to add a <strong>www</strong> subdomain, or use a wildcard that will answer to everything (<strong>*</strong>), you will have to make a CNAME pointing to <strong>catsknitting.com</strong> for <strong>www</strong> and/or <strong>*</strong>.
+          p After that, you can add the domain to the box below (just the <strong>catsknitting.com</strong>, don't add any subdomains), and your domain should come online within 5 minutes:
+          form method="POST" action="/custom_domain"
+            input name="csrf_token" type="hidden" value="#{csrf_token}"
+            input name="domain" type="text" placeholder="catsknitting.com" value="#{current_site.domain}"
+            br
+            input.btn-Action type="submit" value="Update Domain"
+          p <strong>NOTE: This is for advanced users, we cannot provide technical support for this feature.</strong> If you cannot make this work, please contact your domain registrar.

views/settings.slim

@@ -57,3 +57,10 @@
             p: strong My page contains objectionable (adult) content:&nbsp;&nbsp;&nbsp;<input name="is_nsfw" type="checkbox" value="true" style="margin-top: 0px" #{"checked" if current_site.is_nsfw}>
           
             input.btn-Action type="submit" value="Update"
+
+    .row
+      .col.col-33
+        .content
+          h2.eps.txt-Center Custom Domain
+          p.txt-Center: strong (advanced)
+          p You can configure a custom domain for your NeoCities site. <strong><a href="/custom_domain">Click Here</a></strong> for more information.

views/templates/domain.erb

@@ -0,0 +1,23 @@
+server {
+  listen 80;
+  server_name <%= current_site.domain %> *.<%= current_site.domain %>
+  access_log /var/log/nginx/neocities-domains.log neocitiesdomain;
+  root /home/web/neocities-web/public/sites/<%= current_site.username %>;
+  index /index.html;
+
+  error_page 404 = @notfound;
+
+  location @notfound {
+      try_files /not_found.html @notfound_root;
+  }
+
+  location @notfound_root {
+    root /home/web/neocities-web/public;
+    try_files /web_site_not_found.html =404;
+  }
+
+  location ~*  \.(html|jpg|jpeg|png|gif|ico|css|js)$ {
+    # expires 20s;
+    log_not_found off;
+  }
+}