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
184
185
186
187
188
189
190
191
192
|
# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.MastodonAPI.SearchController do
use Pleroma.Web, :controller
alias Pleroma.Activity
alias Pleroma.Plugs.OAuthScopesPlug
alias Pleroma.Plugs.RateLimiter
alias Pleroma.Repo
alias Pleroma.User
alias Pleroma.Web
alias Pleroma.Web.ControllerHelper
alias Pleroma.Web.MastodonAPI.AccountView
alias Pleroma.Web.MastodonAPI.StatusView
require Logger
plug(Pleroma.Web.ApiSpec.CastAndValidate)
# Note: Mastodon doesn't allow unauthenticated access (requires read:accounts / read:search)
plug(OAuthScopesPlug, %{scopes: ["read:search"], fallback: :proceed_unauthenticated})
# Note: on private instances auth is required (EnsurePublicOrAuthenticatedPlug is not skipped)
plug(RateLimiter, [name: :search] when action in [:search, :search2, :account_search])
defdelegate open_api_operation(action), to: Pleroma.Web.ApiSpec.SearchOperation
def account_search(%{assigns: %{user: user}} = conn, %{q: query} = params) do
accounts = User.search(query, search_options(params, user))
conn
|> put_view(AccountView)
|> render("index.json",
users: accounts,
for: user,
as: :user
)
end
def search2(conn, params), do: do_search(:v2, conn, params)
def search(conn, params), do: do_search(:v1, conn, params)
defp do_search(version, %{assigns: %{user: user}} = conn, %{q: query} = params) do
options = search_options(params, user)
timeout = Keyword.get(Repo.config(), :timeout, 15_000)
default_values = %{"statuses" => [], "accounts" => [], "hashtags" => []}
result =
default_values
|> Enum.map(fn {resource, default_value} ->
if params[:type] in [nil, resource] do
{resource, fn -> resource_search(version, resource, query, options) end}
else
{resource, fn -> default_value end}
end
end)
|> Task.async_stream(fn {resource, f} -> {resource, with_fallback(f)} end,
timeout: timeout,
on_timeout: :kill_task
)
|> Enum.reduce(default_values, fn
{:ok, {resource, result}}, acc ->
Map.put(acc, resource, result)
_error, acc ->
acc
end)
json(conn, result)
end
defp search_options(params, user) do
[
resolve: params[:resolve],
following: params[:following],
limit: params[:limit],
offset: params[:offset],
type: params[:type],
author: get_author(params),
embed_relationships: ControllerHelper.embed_relationships?(params),
for_user: user
]
|> Enum.filter(&elem(&1, 1))
end
defp resource_search(_, "accounts", query, options) do
accounts = with_fallback(fn -> User.search(query, options) end)
AccountView.render("index.json",
users: accounts,
for: options[:for_user],
as: :user,
embed_relationships: options[:embed_relationships]
)
end
defp resource_search(_, "statuses", query, options) do
statuses = with_fallback(fn -> Activity.search(options[:for_user], query, options) end)
StatusView.render("index.json",
activities: statuses,
for: options[:for_user],
as: :activity
)
end
defp resource_search(:v2, "hashtags", query, options) do
tags_path = Web.base_url() <> "/tag/"
query
|> prepare_tags(options)
|> Enum.map(fn tag ->
%{name: tag, url: tags_path <> tag}
end)
end
defp resource_search(:v1, "hashtags", query, options) do
prepare_tags(query, options)
end
defp prepare_tags(query, options) do
tags =
query
|> preprocess_uri_query()
|> String.split(~r/[^#\w]+/u, trim: true)
|> Enum.uniq_by(&String.downcase/1)
explicit_tags = Enum.filter(tags, fn tag -> String.starts_with?(tag, "#") end)
tags =
if Enum.any?(explicit_tags) do
explicit_tags
else
tags
end
tags = Enum.map(tags, fn tag -> String.trim_leading(tag, "#") end)
tags =
if Enum.empty?(explicit_tags) && !options[:skip_joined_tag] do
add_joined_tag(tags)
else
tags
end
Pleroma.Pagination.paginate(tags, options)
end
defp add_joined_tag(tags) do
tags
|> Kernel.++([joined_tag(tags)])
|> Enum.uniq_by(&String.downcase/1)
end
# If `query` is a URI, returns last component of its path, otherwise returns `query`
defp preprocess_uri_query(query) do
if query =~ ~r/https?:\/\// do
query
|> String.trim_trailing("/")
|> URI.parse()
|> Map.get(:path)
|> String.split("/")
|> Enum.at(-1)
else
query
end
end
defp joined_tag(tags) do
tags
|> Enum.map(fn tag -> String.capitalize(tag) end)
|> Enum.join()
end
defp with_fallback(f, fallback \\ []) do
try do
f.()
rescue
error ->
Logger.error("#{__MODULE__} search error: #{inspect(error)}")
fallback
end
end
defp get_author(%{account_id: account_id}) when is_binary(account_id),
do: User.get_cached_by_id(account_id)
defp get_author(_params), do: nil
end
|
