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[feature] domain block wildcarding (#1178)

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* for domain block lookups, lookup along subdomain parts

Signed-off-by: kim <grufwub@gmail.com>

* only lookup up to a max of 5 domain parts to prevent DOS, limit inserted domains to max of 5 subdomains

Signed-off-by: kim <grufwub@gmail.com>

* add test for domain block wildcarding

Signed-off-by: kim <grufwub@gmail.com>

* check cached status first, increase cached domain time

Signed-off-by: kim <grufwub@gmail.com>

* fix domain wildcard part building logic

Signed-off-by: kim <grufwub@gmail.com>

* create separate domain.BlockCache{} type to hold all domain blocks in memory

Signed-off-by: kim <grufwub@gmail.com>

* remove unused variable

Signed-off-by: kim <grufwub@gmail.com>

* add docs and test to domain block cache, check for domain == host in domain block getter funcs

Signed-off-by: kim <grufwub@gmail.com>

* add license text

Signed-off-by: kim <grufwub@gmail.com>

* check order in which we check primary cache

Signed-off-by: kim <grufwub@gmail.com>

* add better documentation of how domain block checking is performed

Signed-off-by: kim <grufwub@gmail.com>

* change

Signed-off-by: kim <grufwub@gmail.com>

Signed-off-by: kim <grufwub@gmail.com>
This commit is contained in:
kim 2022-12-14 09:55:36 +00:00 • committed by GitHub
commit 69dd5fed2c
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5 changed files with 350 additions and 39 deletions
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85
internal/cache/domain/domain_test.go vendored Normal file
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/*
GoToSocial
Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package domain_test
import (
"errors"
"testing"
"time"
"github.com/superseriousbusiness/gotosocial/internal/cache/domain"
)
func TestBlockCache(t *testing.T) {
c := domain.New(100, time.Second)
blocks := []string{
"google.com",
"google.co.uk",
"pleroma.bad.host",
}
loader := func() ([]string, error) {
t.Log("load: returning blocked domains")
return blocks, nil
}
// Check a list of known blocked domains.
for _, domain := range []string{
"google.com",
"mail.google.com",
"google.co.uk",
"mail.google.co.uk",
"pleroma.bad.host",
"dev.pleroma.bad.host",
} {
t.Logf("checking domain is blocked: %s", domain)
if b, _ := c.IsBlocked(domain, loader); !b {
t.Errorf("domain should be blocked: %s", domain)
}
}
// Check a list of known unblocked domains.
for _, domain := range []string{
"askjeeves.com",
"ask-kim.co.uk",
"google.ie",
"mail.google.ie",
"gts.bad.host",
"mastodon.bad.host",
} {
t.Logf("checking domain isn't blocked: %s", domain)
if b, _ := c.IsBlocked(domain, loader); b {
t.Errorf("domain should not be blocked: %s", domain)
}
}
// Clear the cache
c.Clear()
knownErr := errors.New("known error")
// Check that reload is actually performed and returns our error
if _, err := c.IsBlocked("", func() ([]string, error) {
t.Log("load: returning known error")
return nil, knownErr
}); !errors.Is(err, knownErr) {
t.Errorf("is blocked did not return expected error: %v", err)
}
}