GoToSocial/internal/netutil/validate.go

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[security] transport.Controller{} and transport.Transport{} security and performance improvements (#564) * cache transports in controller by privkey-generated pubkey, add retry logic to transport requests Signed-off-by: kim <grufwub@gmail.com> * update code comments, defer mutex unlocks Signed-off-by: kim <grufwub@gmail.com> * add count to 'performing request' log message Signed-off-by: kim <grufwub@gmail.com> * reduce repeated conversions of same url.URL object Signed-off-by: kim <grufwub@gmail.com> * move worker.Worker to concurrency subpackage, add WorkQueue type, limit transport http client use by WorkQueue Signed-off-by: kim <grufwub@gmail.com> * fix security advisories regarding max outgoing conns, max rsp body size - implemented by a new httpclient.Client{} that wraps an underlying client with a queue to limit connections, and limit reader wrapping a response body with a configured maximum size - update pub.HttpClient args passed around to be this new httpclient.Client{} Signed-off-by: kim <grufwub@gmail.com> * add httpclient tests, move ip validation to separate package + change mechanism Signed-off-by: kim <grufwub@gmail.com> * fix merge conflicts Signed-off-by: kim <grufwub@gmail.com> * use singular mutex in transport rather than separate signer mus Signed-off-by: kim <grufwub@gmail.com> * improved useragent string Signed-off-by: kim <grufwub@gmail.com> * add note regarding missing test Signed-off-by: kim <grufwub@gmail.com> * remove useragent field from transport (instead store in controller) Signed-off-by: kim <grufwub@gmail.com> * shutup linter Signed-off-by: kim <grufwub@gmail.com> * reset other signing headers on each loop iteration Signed-off-by: kim <grufwub@gmail.com> * respect request ctx during retry-backoff sleep period Signed-off-by: kim <grufwub@gmail.com> * use external pkg with docs explaining performance "hack" Signed-off-by: kim <grufwub@gmail.com> * use http package constants instead of string method literals Signed-off-by: kim <grufwub@gmail.com> * add license file headers Signed-off-by: kim <grufwub@gmail.com> * update code comment to match new func names Signed-off-by: kim <grufwub@gmail.com> * updates to user-agent string Signed-off-by: kim <grufwub@gmail.com> * update signed testrig models to fit with new transport logic (instead uses separate signer now) Signed-off-by: kim <grufwub@gmail.com> * fuck you linter Signed-off-by: kim <grufwub@gmail.com>
2022-05-15 11:16:43 +02:00
/*
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 netutil
import (
"net/netip"
)
var (
// IPv6GlobalUnicast is the global IPv6 unicast IP prefix.
IPv6GlobalUnicast = netip.MustParsePrefix("ff00::/8")
// IPvReserved contains IPv4 reserved IP prefixes.
IPv4Reserved = [...]netip.Prefix{
netip.MustParsePrefix("0.0.0.0/8"), // Current network
netip.MustParsePrefix("10.0.0.0/8"), // Private
netip.MustParsePrefix("100.64.0.0/10"), // RFC6598
netip.MustParsePrefix("127.0.0.0/8"), // Loopback
netip.MustParsePrefix("169.254.0.0/16"), // Link-local
netip.MustParsePrefix("172.16.0.0/12"), // Private
netip.MustParsePrefix("192.0.0.0/24"), // RFC6890
netip.MustParsePrefix("192.0.2.0/24"), // Test, doc, examples
netip.MustParsePrefix("192.88.99.0/24"), // IPv6 to IPv4 relay
netip.MustParsePrefix("192.168.0.0/16"), // Private
netip.MustParsePrefix("198.18.0.0/15"), // Benchmarking tests
netip.MustParsePrefix("198.51.100.0/24"), // Test, doc, examples
netip.MustParsePrefix("203.0.113.0/24"), // Test, doc, examples
netip.MustParsePrefix("224.0.0.0/4"), // Multicast
netip.MustParsePrefix("240.0.0.0/4"), // Reserved (includes broadcast / 255.255.255.255)
}
)
// ValidateAddr will parse a netip.AddrPort from string, and return the result of ValidateIP() on addr.
func ValidateAddr(s string) bool {
ipport, err := netip.ParseAddrPort(s)
if err != nil {
return false
}
return ValidateIP(ipport.Addr())
}
// ValidateIP returns whether IP is an IPv4/6 address in non-reserved, public ranges.
func ValidateIP(ip netip.Addr) bool {
switch {
// IPv4: check if IPv4 in reserved nets
case ip.Is4():
for _, reserved := range IPv4Reserved {
if reserved.Contains(ip) {
return false
}
}
return true
// IPv6: check if in global unicast (public internet)
case ip.Is6():
return IPv6GlobalUnicast.Contains(ip)
// Assume malicious by default
default:
return false
}
}