GoToSocial/internal/transport/signing.go

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// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// 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/>.
[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
package transport
import (
"github.com/go-fed/httpsig"
)
var (
// http signer preferences
prefs = []httpsig.Algorithm{httpsig.RSA_SHA256}
digestAlgo = httpsig.DigestSha256
getHeaders = []string{httpsig.RequestTarget, "host", "date"}
postHeaders = []string{httpsig.RequestTarget, "host", "date", "digest"}
)
// NewGETSigner returns a new httpsig.Signer instance initialized with GTS GET preferences.
func NewGETSigner(expiresIn int64) (httpsig.Signer, error) {
sig, _, err := httpsig.NewSigner(prefs, digestAlgo, getHeaders, httpsig.Signature, expiresIn)
return sig, err
}
// NewPOSTSigner returns a new httpsig.Signer instance initialized with GTS POST preferences.
func NewPOSTSigner(expiresIn int64) (httpsig.Signer, error) {
sig, _, err := httpsig.NewSigner(prefs, digestAlgo, postHeaders, httpsig.Signature, expiresIn)
return sig, err
}