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authorMatt Jankowski <mjankowski@thoughtbot.com>2017-04-12 12:22:38 -0400
committerEugen <eugen@zeonfederated.com>2017-04-12 18:22:38 +0200
commitaa9079838648e9656a1bf8d10151713686e1c0dd (patch)
treebadfc5eb2d26c8fb53f6457c6408508941023202 /app/lib
parent0930ce5560749f5ede3aa70aef4130ad1a9dc6ba (diff)
Webfinger resource to extract username from resource string (#1607)
* Add WebfingerResource class to extract usernames

* Use WebfingerResource in xrd#webfinger
Diffstat (limited to 'app/lib')
-rw-r--r--app/lib/webfinger_resource.rb66
1 files changed, 66 insertions, 0 deletions
diff --git a/app/lib/webfinger_resource.rb b/app/lib/webfinger_resource.rb
new file mode 100644
index 000000000..8c5db795d
--- /dev/null
+++ b/app/lib/webfinger_resource.rb
@@ -0,0 +1,66 @@
+# frozen_string_literal: true
+
+class WebfingerResource
+  attr_reader :resource
+
+  def initialize(resource)
+    @resource = resource
+  end
+
+  def username
+    case resource
+    when /\Ahttps?/i
+      username_from_url
+    when /\@/
+      username_from_acct
+    else
+      raise(ActiveRecord::RecordNotFound)
+    end
+  end
+
+  private
+
+  def username_from_url
+    if account_show_page?
+      path_params[:username]
+    else
+      raise ActiveRecord::RecordNotFound
+    end
+  end
+
+  def account_show_page?
+    path_params[:controller] == 'accounts' && path_params[:action] == 'show'
+  end
+
+  def path_params
+    Rails.application.routes.recognize_path(resource)
+  end
+
+  def username_from_acct
+    if domain_matches_local?
+      local_username
+    else
+      raise ActiveRecord::RecordNotFound
+    end
+  end
+
+  def split_acct
+    resource_without_acct_string.split('@')
+  end
+
+  def resource_without_acct_string
+    resource.gsub(/\Aacct:/, '')
+  end
+
+  def local_username
+    split_acct.first
+  end
+
+  def local_domain
+    split_acct.last
+  end
+
+  def domain_matches_local?
+    TagManager.instance.local_domain?(local_domain)
+  end
+end