api: replace django sentry proxy with go proxy to prevent login issues

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

internal/web/sentry_proxy.go

@@ -0,0 +1,53 @@
+package web
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"net/http"
+	"strings"
+
+	"goauthentik.io/internal/config"
+)
+
+type SentryRequest struct {
+	DSN string `json:"dsn"`
+}
+
+func (ws *WebServer) APISentryProxy(rw http.ResponseWriter, r *http.Request) {
+	if !config.G.ErrorReporting.Enabled {
+		ws.log.Debug("error reporting disabled")
+		rw.WriteHeader(http.StatusBadRequest)
+		return
+	}
+	fullBody, err := ioutil.ReadAll(r.Body)
+	if err != nil {
+		ws.log.Debug("failed to read body")
+		rw.WriteHeader(http.StatusBadRequest)
+		return
+	}
+	lines := strings.Split(string(fullBody), "\n")
+	if len(lines) < 1 {
+		rw.WriteHeader(http.StatusBadRequest)
+		return
+	}
+	sd := SentryRequest{}
+	ws.log.Debug(lines[0])
+	err = json.Unmarshal([]byte(lines[0]), &sd)
+	if err != nil {
+		ws.log.WithError(err).Warning("failed to parse sentry request")
+		rw.WriteHeader(http.StatusBadRequest)
+		return
+	}
+	if sd.DSN != config.G.ErrorReporting.DSN {
+		ws.log.WithField("have", sd.DSN).WithField("expected", config.G.ErrorReporting.DSN).Debug("invalid DSN")
+		rw.WriteHeader(http.StatusBadRequest)
+		return
+	}
+	res, err := http.DefaultClient.Post("https://sentry.beryju.org/api/8/envelope/", "application/octet-stream", strings.NewReader(string(fullBody)))
+	if err != nil {
+		ws.log.WithError(err).Warning("failed to proxy sentry")
+		rw.WriteHeader(http.StatusBadRequest)
+		return
+	}
+	rw.WriteHeader(res.StatusCode)
+}