mirror of
https://github.com/owncast/owncast.git
synced 2024-11-27 17:59:21 +03:00
90 lines
2.9 KiB
Go
90 lines
2.9 KiB
Go
package crypto
|
|
|
|
import (
|
|
"bytes"
|
|
"crypto"
|
|
"fmt"
|
|
"net/http"
|
|
"net/url"
|
|
"time"
|
|
|
|
"github.com/go-fed/httpsig"
|
|
"github.com/owncast/owncast/config"
|
|
log "github.com/sirupsen/logrus"
|
|
)
|
|
|
|
// SignResponse will sign a response using the provided response body and public key.
|
|
func SignResponse(w http.ResponseWriter, body []byte, publicKey PublicKey) error {
|
|
privateKey := GetPrivateKey()
|
|
|
|
return signResponse(privateKey, *publicKey.ID, body, w)
|
|
}
|
|
|
|
func signResponse(privateKey crypto.PrivateKey, pubKeyID url.URL, body []byte, w http.ResponseWriter) error {
|
|
prefs := []httpsig.Algorithm{httpsig.RSA_SHA256}
|
|
digestAlgorithm := httpsig.DigestSha256
|
|
|
|
// The "Date" and "Digest" headers must already be set on r, as well as r.URL.
|
|
headersToSign := []string{}
|
|
if body != nil {
|
|
headersToSign = append(headersToSign, "digest")
|
|
}
|
|
|
|
signer, _, err := httpsig.NewSigner(prefs, digestAlgorithm, headersToSign, httpsig.Signature, 0)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// If r were a http.ResponseWriter, call SignResponse instead.
|
|
return signer.SignResponse(privateKey, pubKeyID.String(), w, body)
|
|
}
|
|
|
|
// SignRequest will sign an ounbound request given the provided body.
|
|
func SignRequest(req *http.Request, body []byte, actorIRI *url.URL) error {
|
|
publicKey := GetPublicKey(actorIRI)
|
|
privateKey := GetPrivateKey()
|
|
|
|
return signRequest(privateKey, publicKey.ID.String(), body, req)
|
|
}
|
|
|
|
func signRequest(privateKey crypto.PrivateKey, pubKeyID string, body []byte, r *http.Request) error {
|
|
prefs := []httpsig.Algorithm{httpsig.RSA_SHA256}
|
|
digestAlgorithm := httpsig.DigestSha256
|
|
|
|
date := time.Now().UTC().Format("Mon, 02 Jan 2006 15:04:05 GMT")
|
|
r.Header["Date"] = []string{date}
|
|
r.Header["Host"] = []string{r.URL.Host}
|
|
r.Header["Accept"] = []string{`application/ld+json; profile="https://www.w3.org/ns/activitystreams"`}
|
|
|
|
// The "Date" and "Digest" headers must already be set on r, as well as r.URL.
|
|
headersToSign := []string{httpsig.RequestTarget, "host", "date"}
|
|
if body != nil {
|
|
headersToSign = append(headersToSign, "digest")
|
|
}
|
|
|
|
signer, _, err := httpsig.NewSigner(prefs, digestAlgorithm, headersToSign, httpsig.Signature, 0)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// If r were a http.ResponseWriter, call SignResponse instead.
|
|
return signer.SignRequest(privateKey, pubKeyID, r, body)
|
|
}
|
|
|
|
// CreateSignedRequest will create a signed POST request of a payload to the provided destination.
|
|
func CreateSignedRequest(payload []byte, url *url.URL, fromActorIRI *url.URL) (*http.Request, error) {
|
|
log.Debugln("Sending", string(payload), "to", url)
|
|
|
|
req, _ := http.NewRequest("POST", url.String(), bytes.NewBuffer(payload))
|
|
|
|
ua := fmt.Sprintf("%s; https://owncast.online", config.GetReleaseString())
|
|
req.Header.Set("User-Agent", ua)
|
|
req.Header.Set("Content-Type", "application/activity+json")
|
|
|
|
if err := SignRequest(req, payload, fromActorIRI); err != nil {
|
|
log.Errorln("error signing request:", err)
|
|
return nil, err
|
|
}
|
|
|
|
return req, nil
|
|
}
|