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Limit search for unauthenticated users to local users only

This commit is contained in:
Egor Kislitsyn 2019-06-05 16:34:14 +07:00
parent 17004a0f1a
commit 5b04f07a1e
4 changed files with 178 additions and 117 deletions
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117
lib/pleroma/user.ex
View File

@ -735,121 +735,6 @@ def get_recipients_from_activity(%Activity{recipients: to}) do
|> Repo.all()
end
def search(query, resolve \\ false, for_user \\ nil) do
# Strip the beginning @ off if there is a query
query = String.trim_leading(query, "@")
if resolve, do: get_or_fetch(query)
{:ok, results} =
Repo.transaction(fn ->
Ecto.Adapters.SQL.query(Repo, "select set_limit(0.25)", [])
Repo.all(search_query(query, for_user))
end)
results
end
def search_query(query, for_user) do
fts_subquery = fts_search_subquery(query)
trigram_subquery = trigram_search_subquery(query)
union_query = from(s in trigram_subquery, union_all: ^fts_subquery)
distinct_query = from(s in subquery(union_query), order_by: s.search_type, distinct: s.id)
from(s in subquery(boost_search_rank_query(distinct_query, for_user)),
order_by: [desc: s.search_rank],
limit: 40
)
end
defp boost_search_rank_query(query, nil), do: query
defp boost_search_rank_query(query, for_user) do
friends_ids = get_friends_ids(for_user)
followers_ids = get_followers_ids(for_user)
from(u in subquery(query),
select_merge: %{
search_rank:
fragment(
"""
CASE WHEN (?) THEN (?) * 1.3
WHEN (?) THEN (?) * 1.2
WHEN (?) THEN (?) * 1.1
ELSE (?) END
""",
u.id in ^friends_ids and u.id in ^followers_ids,
u.search_rank,
u.id in ^friends_ids,
u.search_rank,
u.id in ^followers_ids,
u.search_rank,
u.search_rank
)
}
)
end
defp fts_search_subquery(term, query \\ User) do
processed_query =
term
|> String.replace(~r/\W+/, " ")
|> String.trim()
|> String.split()
|> Enum.map(&(&1 <> ":*"))
|> Enum.join(" | ")
from(
u in query,
select_merge: %{
search_type: ^0,
search_rank:
fragment(
"""
ts_rank_cd(
setweight(to_tsvector('simple', regexp_replace(?, '\\W', ' ', 'g')), 'A') ||
setweight(to_tsvector('simple', regexp_replace(coalesce(?, ''), '\\W', ' ', 'g')), 'B'),
to_tsquery('simple', ?),
32
)
""",
u.nickname,
u.name,
^processed_query
)
},
where:
fragment(
"""
(setweight(to_tsvector('simple', regexp_replace(?, '\\W', ' ', 'g')), 'A') ||
setweight(to_tsvector('simple', regexp_replace(coalesce(?, ''), '\\W', ' ', 'g')), 'B')) @@ to_tsquery('simple', ?)
""",
u.nickname,
u.name,
^processed_query
)
)
|> restrict_deactivated()
end
defp trigram_search_subquery(term) do
from(
u in User,
select_merge: %{
# ^1 gives 'Postgrex expected a binary, got 1' for some weird reason
search_type: fragment("?", 1),
search_rank:
fragment(
"similarity(?, trim(? || ' ' || coalesce(?, '')))",
^term,
u.nickname,
u.name
)
},
where: fragment("trim(? || ' ' || coalesce(?, '')) % ?", u.nickname, u.name, ^term)
)
|> restrict_deactivated()
end
def mute(muter, %User{ap_id: ap_id}) do
info_cng =
@ -1449,4 +1334,6 @@ def get_ap_ids_by_nicknames(nicknames) do
)
|> Repo.all()
end
defdelegate search(query, opts \\ []), to: User.Search
end

145
lib/pleroma/user/search.ex Normal file
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@ -0,0 +1,145 @@
# Pleroma: A lightweight social networking server
# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.User.Search do
alias Pleroma.Repo
alias Pleroma.User
import Ecto.Query
def search(query, opts \\ []) do
resolve = Keyword.get(opts, :resolve, false)
for_user = Keyword.get(opts, :for_user)
# Strip the beginning @ off if there is a query
query = String.trim_leading(query, "@")
if match?(%User{}, for_user) and resolve, do: User.get_or_fetch(query)
{:ok, results} =
Repo.transaction(fn ->
Ecto.Adapters.SQL.query(Repo, "select set_limit(0.25)", [])
query
|> search_query(for_user)
|> Repo.all()
end)
results
end
defp search_query(query, for_user) do
query
|> union_query()
|> distinct_query()
|> boost_search_rank_query(for_user)
|> subquery()
|> order_by(desc: :search_rank)
|> limit(20)
|> maybe_restrict_local(for_user)
end
defp union_query(query) do
fts_subquery = fts_search_subquery(query)
trigram_subquery = trigram_search_subquery(query)
from(s in trigram_subquery, union_all: ^fts_subquery)
end
defp distinct_query(q) do
from(s in subquery(q), order_by: s.search_type, distinct: s.id)
end
# unauthenticated users can only search local activities
defp maybe_restrict_local(q, %User{}), do: q
defp maybe_restrict_local(q, _), do: where(q, [u], u.local == true)
defp boost_search_rank_query(query, nil), do: query
defp boost_search_rank_query(query, for_user) do
friends_ids = User.get_friends_ids(for_user)
followers_ids = User.get_followers_ids(for_user)
from(u in subquery(query),
select_merge: %{
search_rank:
fragment(
"""
CASE WHEN (?) THEN (?) * 1.3
WHEN (?) THEN (?) * 1.2
WHEN (?) THEN (?) * 1.1
ELSE (?) END
""",
u.id in ^friends_ids and u.id in ^followers_ids,
u.search_rank,
u.id in ^friends_ids,
u.search_rank,
u.id in ^followers_ids,
u.search_rank,
u.search_rank
)
}
)
end
defp fts_search_subquery(term, query \\ User) do
processed_query =
term
|> String.replace(~r/\W+/, " ")
|> String.trim()
|> String.split()
|> Enum.map(&(&1 <> ":*"))
|> Enum.join(" | ")
from(
u in query,
select_merge: %{
search_type: ^0,
search_rank:
fragment(
"""
ts_rank_cd(
setweight(to_tsvector('simple', regexp_replace(?, '\\W', ' ', 'g')), 'A') ||
setweight(to_tsvector('simple', regexp_replace(coalesce(?, ''), '\\W', ' ', 'g')), 'B'),
to_tsquery('simple', ?),
32
)
""",
u.nickname,
u.name,
^processed_query
)
},
where:
fragment(
"""
(setweight(to_tsvector('simple', regexp_replace(?, '\\W', ' ', 'g')), 'A') ||
setweight(to_tsvector('simple', regexp_replace(coalesce(?, ''), '\\W', ' ', 'g')), 'B')) @@ to_tsquery('simple', ?)
""",
u.nickname,
u.name,
^processed_query
)
)
|> User.restrict_deactivated()
end
defp trigram_search_subquery(term) do
from(
u in User,
select_merge: %{
# ^1 gives 'Postgrex expected a binary, got 1' for some weird reason
search_type: fragment("?", 1),
search_rank:
fragment(
"similarity(?, trim(? || ' ' || coalesce(?, '')))",
^term,
u.nickname,
u.name
)
},
where: fragment("trim(? || ' ' || coalesce(?, '')) % ?", u.nickname, u.name, ^term)
)
|> User.restrict_deactivated()
end
end

30
test/user_test.exs
View File

@ -1055,7 +1055,7 @@ test "finds users, ranking by similarity" do
u3 = insert(:user, %{name: "ebn", nickname: "lain@mastodon.social"})
u4 = insert(:user, %{nickname: "lain@pleroma.soykaf.com"})
assert [u4.id, u3.id, u1.id] == Enum.map(User.search("lain@ple"), & &1.id)
assert [u4.id, u3.id, u1.id] == Enum.map(User.search("lain@ple", for_user: u1), & &1.id)
end
test "finds users, handling misspelled requests" do
@ -1077,6 +1077,28 @@ test "finds users, boosting ranks of friends and followers" do
Enum.map(User.search("doe", resolve: false, for_user: u1), & &1.id) == []
end
test "find local and remote statuses for authenticated users" do
u1 = insert(:user, %{name: "lain"})
u2 = insert(:user, %{name: "ebn", nickname: "lain@mastodon.social", local: false})
u3 = insert(:user, %{nickname: "lain@pleroma.soykaf.com", local: false})
results =
"lain"
|> User.search(for_user: u1)
|> Enum.map(& &1.id)
|> Enum.sort()
assert [u1.id, u2.id, u3.id] == results
end
test "find only local statuses for unauthenticated users" do
%{id: id} = insert(:user, %{name: "lain"})
insert(:user, %{name: "ebn", nickname: "lain@mastodon.social", local: false})
insert(:user, %{nickname: "lain@pleroma.soykaf.com", local: false})
assert [%{id: ^id}] = User.search("lain")
end
test "finds a user whose name is nil" do
_user = insert(:user, %{name: "notamatch", nickname: "testuser@pleroma.amplifie.red"})
user_two = insert(:user, %{name: nil, nickname: "lain@pleroma.soykaf.com"})
@ -1097,7 +1119,11 @@ test "does not yield false-positive matches" do
end
test "works with URIs" do
results = User.search("http://mastodon.example.org/users/admin", resolve: true)
user = insert(:user)
results =
User.search("http://mastodon.example.org/users/admin", resolve: true, for_user: user)
result = results |> List.first()
user = User.get_cached_by_ap_id("http://mastodon.example.org/users/admin")

3
test/web/mastodon_api/mastodon_api_controller_test.exs
View File

@ -2173,8 +2173,11 @@ test "search doesn't show statuses that it shouldn't", %{conn: conn} do
end
test "search fetches remote accounts", %{conn: conn} do
user = insert(:user)
conn =
conn
|> assign(:user, user)
|> get("/api/v1/search", %{"q" => "shp@social.heldscal.la", "resolve" => "true"})
assert results = json_response(conn, 200)