From 711bf7f86daddd0209244f9640d8a3f27d958e3a Mon Sep 17 00:00:00 2001
From: pdp8 <pdp8@pdp8.info>
Date: Fri, 21 Jul 2023 00:52:49 +0200
Subject: inbox and outbox unified

---
 helpers.rb | 77 +++++++++++++++-----------------------------------------------
 1 file changed, 18 insertions(+), 59 deletions(-)

(limited to 'helpers.rb')

diff --git a/helpers.rb b/helpers.rb
index 0c668e9..45c58df 100644
--- a/helpers.rb
+++ b/helpers.rb
@@ -3,73 +3,32 @@
 require 'English'
 
 helpers do
-  def outbox(type, object, recipients, add_recipients = false)
-    activity = {
-      '@context' => 'https://www.w3.org/ns/activitystreams',
-      'type' => type,
-      'actor' => ACTOR,
-      'object' => object
-    }
+  # add date and id, save
+  def complete_and_save(activity)
+    box = activity['id'] ? INBOX : OUTBOX
+    date = Time.now.utc.iso8601
+    activity['published'] = date if box == OUTBOX
+    basename = "#{activity['published']}_#{mention(activity['actor'])}.json"
+    activity_rel_path = File.join(activity['type'].downcase, basename)
+    activity_path = File.join(box[:dir], activity_rel_path)
+    activity['id'] = File.join(box[:url], activity_rel_path) if box == OUTBOX
 
-    now = Time.now
-    date = now.strftime('%Y-%m-%dT%H:%M:%S.%N')
-    httpdate = now.utc.httpdate
-    basename = "#{date}.json"
-    activity_rel_path = File.join(type.downcase, basename)
-    activity_path = File.join(OUTBOX_DIR, activity_rel_path)
-    activity['id'] = File.join(OUTBOX_URL, activity_rel_path)
-    activity['published'] = httpdate
-    # assumes that recipient collections have been expanded by sender
-    # put all recipients into 'to', avoid 'cc' 'bto' 'bcc' 'audience' !!
-    activity['to'] = recipients if add_recipients
-
-    # save object
     if activity['object'] && activity['object']['type'] && !activity['object']['id']
-
+      # save object
       object = activity['object']
       object['@context'] = 'https://www.w3.org/ns/activitystreams'
-      object_rel_path = File.join activity['object']['type'].downcase, basename
-      object_path = File.join OUTBOX_DIR, object_rel_path
-      object['id'] = File.join OUTBOX_URL, object_rel_path
-      object['published'] = httpdate
+      object_rel_path = File.join 'object', activity['object']['type'].downcase, basename
+      if box == OUTBOX
+        object['id'] = File.join box[:url], object_rel_path
+        object['published'] = date
+      end
+      object_path = File.join box[:dir], object_rel_path
       FileUtils.mkdir_p File.dirname(object_path)
       File.open(object_path, 'w+') { |f| f.puts object.to_json }
     end
     # save activity
     FileUtils.mkdir_p File.dirname(activity_path)
     File.open(activity_path, 'w+') { |f| f.puts activity.to_json }
-    update_collection OUTBOX, activity['id'] if %w[Create Announce].include?(type)
-
-    # send
-    # https://github.com/mastodon/mastodon/blob/main/app/lib/request.rb
-    keypair = OpenSSL::PKey::RSA.new(File.read('private.pem'))
-    body = activity.to_json
-    sha256 = OpenSSL::Digest.new('SHA256')
-    digest = "SHA-256=#{sha256.base64digest(body)}"
-
-    inboxes = []
-    recipients.uniq.each do |url|
-      next if [ACTOR, 'https://www.w3.org/ns/activitystreams#Public'].include? url
-
-      actor = fetch url
-      next unless actor
-
-      if actor['endpoints'] and actor['endpoints']['sharedInbox']
-        inboxes << actor['endpoints']['sharedInbox']
-      elsif actor['inbox']
-        inboxes << actor['inbox']
-      end
-    end
-    inboxes.compact.uniq.each do |inbox|
-      uri = URI(inbox)
-      string = "(request-target): post #{uri.request_uri}\nhost: #{uri.host}\ndate: #{httpdate}\ndigest: #{digest}\ncontent-type: application/activity+json"
-      signature = Base64.strict_encode64(keypair.sign(OpenSSL::Digest.new('SHA256'), string))
-      signed_header = "keyId=\"#{ACTOR}#main-key\",algorithm=\"rsa-sha256\",headers=\"(request-target) host date digest content-type\",signature=\"#{signature}\""
-
-      curl(
-        "-X POST -H 'Content-Type: application/activity+json' -H 'Host: #{uri.host}' -H 'Date: #{httpdate}' -H 'Digest: #{digest}' -H 'Signature: #{signed_header}' -d '#{body}'", inbox
-      )
-    end
     activity
   end
 
@@ -154,11 +113,11 @@ helpers do
   end
 
   def people
-    File.read('private/people.tsv').split("\n").collect { |l| l.chomp.split("\t") }
+    File.read('public/people.tsv').split("\n").collect { |l| l.chomp.split("\t") }
   end
 
   def cache(mention, actor, a)
     sharedInbox = a['endpoints']['sharedInbox'] if a['endpoints'] && a['endpoints']['sharedInbox']
-    File.open('private/people.tsv', 'a') { |f| f.puts "#{mention}\t#{actor}\t#{sharedInbox}" }
+    File.open('public/people.tsv', 'a') { |f| f.puts "#{mention}\t#{actor}\t#{sharedInbox}" }
   end
 end
-- 
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