1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
class ProcessFeedService < BaseService
# Create local statuses from an Atom feed
# @param [String] body Atom feed
# @param [Account] account Account this feed belongs to
def call(body, account)
xml = Nokogiri::XML(body)
update_remote_profile_service.(xml.at_xpath('/xmlns:feed/xmlns:author'), account) unless xml.at_xpath('/xmlns:feed').nil?
xml.xpath('//xmlns:entry').each { |entry| process_entry(account, entry) }
end
private
def process_entry(account, entry)
return unless [:note, :comment, :activity].include? object_type(entry)
status = Status.find_by(uri: activity_id(entry))
# If we already have a post and the verb is now "delete", we gotta delete it and move on!
if !status.nil? && verb(entry) == :delete
delete_post!(status)
return
end
return unless status.nil?
status = Status.new(uri: activity_id(entry), url: activity_link(entry), account: account, text: content(entry), created_at: published(entry), updated_at: updated(entry))
if verb(entry) == :share
add_reblog!(entry, status)
elsif verb(entry) == :post
if thread_id(entry).nil?
add_post!(entry, status)
else
add_reply!(entry, status)
end
end
# If we added a status, go through accounts it mentions and create respective relations
unless status.new_record?
record_remote_mentions(status, entry.xpath('./xmlns:link[@rel="mentioned"]'))
DistributionWorker.perform_async(status.id)
end
end
def record_remote_mentions(status, links)
# Here we have to do a reverse lookup of local accounts by their URL!
# It's not pretty at all! I really wish all these protocols sticked to
# using acct:username@domain only! It would make things so much easier
# and tidier
links.each do |mention_link|
href = Addressable::URI.parse(mention_link.attribute('href').value)
if href.host == Rails.configuration.x.local_domain
# A local user is mentioned
mentioned_account = Account.find_local(href.path.gsub('/users/', ''))
unless mentioned_account.nil?
mentioned_account.mentions.where(status: status).first_or_create(status: status)
NotificationMailer.mention(mentioned_account, status).deliver_later
end
else
# What to do about remote user?
end
end
end
def add_post!(_entry, status)
status.save!
end
def add_reblog!(entry, status)
status.reblog = find_original_status(entry, target_id(entry))
if status.reblog.nil?
status.reblog = fetch_remote_status(entry)
end
if !status.reblog.nil?
status.save!
NotificationMailer.reblog(status.reblog, status.account).deliver_later if status.reblog.local?
end
end
def add_reply!(entry, status)
status.thread = find_original_status(entry, thread_id(entry))
status.save!
end
def delete_post!(status)
status.destroy!
end
def find_original_status(_xml, id)
return nil if id.nil?
if local_id?(id)
Status.find(unique_tag_to_local_id(id, 'Status'))
else
Status.find_by(uri: id)
end
end
def fetch_remote_status(xml)
username = xml.at_xpath('./activity:object/xmlns:author/xmlns:name').content
url = xml.at_xpath('./activity:object/xmlns:author/xmlns:uri').content
domain = Addressable::URI.parse(url).host
account = Account.find_by(username: username, domain: domain)
if account.nil?
account = follow_remote_account_service.("#{username}@#{domain}", false)
return nil if account.nil?
end
Status.new(account: account, uri: target_id(xml), text: target_content(xml), url: target_url(xml))
end
def published(xml)
xml.at_xpath('./xmlns:published').content
end
def updated(xml)
xml.at_xpath('./xmlns:updated').content
end
def content(xml)
xml.at_xpath('./xmlns:content').content
end
def thread_id(xml)
xml.at_xpath('./thr:in-reply-to').attribute('ref').value
rescue
nil
end
def target_id(xml)
xml.at_xpath('.//activity:object/xmlns:id').content
rescue
nil
end
def activity_id(xml)
xml.at_xpath('./xmlns:id').content
end
def activity_link(xml)
xml.at_xpath('./xmlns:link[@rel="alternate"]').attribute('href').value
rescue
''
end
def target_content(xml)
xml.at_xpath('.//activity:object/xmlns:content').content
end
def target_url(xml)
xml.at_xpath('.//activity:object/xmlns:link[@rel="alternate"]').attribute('href').value
end
def object_type(xml)
xml.at_xpath('./activity:object-type').content.gsub('http://activitystrea.ms/schema/1.0/', '').to_sym
rescue
:note
end
def verb(xml)
xml.at_xpath('./activity:verb').content.gsub('http://activitystrea.ms/schema/1.0/', '').to_sym
rescue
:post
end
def follow_remote_account_service
@follow_remote_account_service ||= FollowRemoteAccountService.new
end
def update_remote_profile_service
@update_remote_profile_service ||= UpdateRemoteProfileService.new
end
def fan_out_on_write_service
@fan_out_on_write_service ||= FanOutOnWriteService.new
end
end
|
