diff options
Diffstat (limited to 'internal/httpclient/transport.go')
-rw-r--r-- | internal/httpclient/transport.go | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/internal/httpclient/transport.go b/internal/httpclient/transport.go new file mode 100644 index 000000000..350d24fab --- /dev/null +++ b/internal/httpclient/transport.go @@ -0,0 +1,55 @@ +// 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/>. + +package httpclient + +import ( + "net/http" + "time" + + "github.com/superseriousbusiness/gotosocial/internal/gtscontext" +) + +// SignFunc is a function signature that provides request signing. +type SignFunc func(r *http.Request) error + +// signingtransport wraps an http.Transport{} +// (RoundTripper implementer) to check request +// context for a signing function and using for +// all subsequent trips through RoundTrip(). +type signingtransport struct{ http.Transport } + +func (t *signingtransport) RoundTrip(r *http.Request) (*http.Response, error) { + // Ensure updated host always set. + r.Header.Set("Host", r.URL.Host) + + if sign := gtscontext.HTTPClientSignFunc(r.Context()); sign != nil { + // Reset signing header fields + now := time.Now().UTC() + r.Header.Set("Date", now.Format("Mon, 02 Jan 2006 15:04:05")+" GMT") + r.Header.Del("Signature") + r.Header.Del("Digest") + + // Sign the outgoing request. + if err := sign(r); err != nil { + return nil, err + } + } + + // Pass to underlying transport. + return t.Transport.RoundTrip(r) +} |