forked from mirrors/gotosocial
5e2bf0bdca
* [chore] Remove years from all license headers Years or year ranges aren't required in license headers. Many projects have removed them in recent years and it avoids a bit of yearly toil. In many cases our copyright claim was also a bit dodgy since we added the 2021-2023 header to files created after 2021 but you can't claim copyright into the past that way. * [chore] Add license header check This ensures a license header is always added to any new file. This avoids maintainers/reviewers needing to remember to check for and ask for it in case a contribution doesn't include it. * [chore] Add missing license headers * [chore] Further updates to license header * Use the more common // indentend comment format * Remove the hack we had for the linter now that we use the // format * Add SPDX license identifier
67 lines
1.7 KiB
Go
67 lines
1.7 KiB
Go
// GoToSocial
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// Copyright (C) GoToSocial Authors admin@gotosocial.org
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// SPDX-License-Identifier: AGPL-3.0-or-later
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package httpclient
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import (
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"net/netip"
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"syscall"
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"github.com/superseriousbusiness/gotosocial/internal/netutil"
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)
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type sanitizer struct {
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allow []netip.Prefix
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block []netip.Prefix
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}
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// Sanitize implements the required net.Dialer.Control function signature.
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func (s *sanitizer) Sanitize(ntwrk, addr string, _ syscall.RawConn) error {
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// Parse IP+port from addr
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ipport, err := netip.ParseAddrPort(addr)
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if err != nil {
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return err
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}
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if !(ntwrk == "tcp4" || ntwrk == "tcp6") {
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return ErrInvalidNetwork
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}
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// Seperate the IP
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ip := ipport.Addr()
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// Check if this is explicitly allowed
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for i := 0; i < len(s.allow); i++ {
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if s.allow[i].Contains(ip) {
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return nil
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}
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}
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// Now check if explicity blocked
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for i := 0; i < len(s.block); i++ {
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if s.block[i].Contains(ip) {
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return ErrReservedAddr
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}
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}
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// Validate this is a safe IP
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if !netutil.ValidateIP(ip) {
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return ErrReservedAddr
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}
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return nil
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}
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