202 lines
7.4 KiB
Go
202 lines
7.4 KiB
Go
package application
|
|
|
|
import (
|
|
"fmt"
|
|
"net/http"
|
|
"strings"
|
|
|
|
"goauthentik.io/internal/outpost/proxyv2/constants"
|
|
)
|
|
|
|
const (
|
|
envoyPrefix = "/outpost.goauthentik.io/auth/envoy"
|
|
caddyPrefix = "/outpost.goauthentik.io/auth/caddy"
|
|
traefikPrefix = "/outpost.goauthentik.io/auth/traefik"
|
|
nginxPrefix = "/outpost.goauthentik.io/auth/nginx"
|
|
)
|
|
|
|
func (a *Application) configureForward() error {
|
|
a.mux.HandleFunc(traefikPrefix, a.forwardHandleTraefik)
|
|
a.mux.HandleFunc(caddyPrefix, a.forwardHandleCaddy)
|
|
a.mux.HandleFunc(nginxPrefix, a.forwardHandleNginx)
|
|
a.mux.PathPrefix(envoyPrefix).HandlerFunc(a.forwardHandleEnvoy)
|
|
return nil
|
|
}
|
|
|
|
func (a *Application) forwardHandleTraefik(rw http.ResponseWriter, r *http.Request) {
|
|
a.log.WithField("header", r.Header).Trace("tracing headers for debug")
|
|
// First check if we've got everything we need
|
|
fwd, err := a.getTraefikForwardUrl(r)
|
|
if err != nil {
|
|
a.ReportMisconfiguration(r, fmt.Sprintf("Outpost %s (Provider %s) failed to detect a forward URL from Traefik", a.outpostName, a.proxyConfig.Name), map[string]interface{}{
|
|
"provider": a.proxyConfig.Name,
|
|
"outpost": a.outpostName,
|
|
"url": r.URL.String(),
|
|
"headers": cleanseHeaders(r.Header),
|
|
})
|
|
http.Error(rw, "configuration error", http.StatusInternalServerError)
|
|
return
|
|
}
|
|
if strings.EqualFold(fwd.Query().Get(CallbackSignature), "true") {
|
|
a.log.Debug("handling OAuth Callback from querystring signature")
|
|
a.handleAuthCallback(rw, r)
|
|
return
|
|
} else if strings.EqualFold(fwd.Query().Get(LogoutSignature), "true") {
|
|
a.log.Debug("handling OAuth Logout from querystring signature")
|
|
a.handleSignOut(rw, r)
|
|
return
|
|
}
|
|
// Check if we're authenticated, or the request path is on the allowlist
|
|
claims, err := a.getClaims(r)
|
|
if claims != nil && err == nil {
|
|
a.addHeaders(rw.Header(), claims)
|
|
rw.Header().Set("User-Agent", r.Header.Get("User-Agent"))
|
|
a.log.WithField("headers", rw.Header()).Trace("headers written to forward_auth")
|
|
return
|
|
} else if claims == nil && a.IsAllowlisted(fwd) {
|
|
a.log.Trace("path can be accessed without authentication")
|
|
return
|
|
}
|
|
tr := r.Clone(r.Context())
|
|
tr.URL = fwd
|
|
a.handleAuthStart(rw, r)
|
|
// set the redirect flag to the current URL we have, since we redirect
|
|
// to a (possibly) different domain, but we want to be redirected back
|
|
// to the application
|
|
// X-Forwarded-Uri is only the path, so we need to build the entire URL
|
|
s, _ := a.sessions.Get(r, constants.SessionName)
|
|
if _, redirectSet := s.Values[constants.SessionRedirect]; !redirectSet {
|
|
s.Values[constants.SessionRedirect] = fwd.String()
|
|
err = s.Save(r, rw)
|
|
if err != nil {
|
|
a.log.WithError(err).Warning("failed to save session")
|
|
}
|
|
}
|
|
}
|
|
|
|
func (a *Application) forwardHandleCaddy(rw http.ResponseWriter, r *http.Request) {
|
|
a.log.WithField("header", r.Header).Trace("tracing headers for debug")
|
|
// First check if we've got everything we need
|
|
fwd, err := a.getTraefikForwardUrl(r)
|
|
if err != nil {
|
|
a.ReportMisconfiguration(r, fmt.Sprintf("Outpost %s (Provider %s) failed to detect a forward URL from Caddy", a.outpostName, a.proxyConfig.Name), map[string]interface{}{
|
|
"provider": a.proxyConfig.Name,
|
|
"outpost": a.outpostName,
|
|
"url": r.URL.String(),
|
|
"headers": cleanseHeaders(r.Header),
|
|
})
|
|
http.Error(rw, "configuration error", http.StatusInternalServerError)
|
|
return
|
|
}
|
|
if strings.EqualFold(fwd.Query().Get(CallbackSignature), "true") {
|
|
a.log.Debug("handling OAuth Callback from querystring signature")
|
|
a.handleAuthCallback(rw, r)
|
|
return
|
|
} else if strings.EqualFold(fwd.Query().Get(LogoutSignature), "true") {
|
|
a.log.Debug("handling OAuth Logout from querystring signature")
|
|
a.handleSignOut(rw, r)
|
|
return
|
|
}
|
|
// Check if we're authenticated, or the request path is on the allowlist
|
|
claims, err := a.getClaims(r)
|
|
if claims != nil && err == nil {
|
|
a.addHeaders(rw.Header(), claims)
|
|
rw.Header().Set("User-Agent", r.Header.Get("User-Agent"))
|
|
a.log.WithField("headers", rw.Header()).Trace("headers written to forward_auth")
|
|
return
|
|
} else if claims == nil && a.IsAllowlisted(fwd) {
|
|
a.log.Trace("path can be accessed without authentication")
|
|
return
|
|
}
|
|
tr := r.Clone(r.Context())
|
|
tr.URL = fwd
|
|
a.handleAuthStart(rw, r)
|
|
// set the redirect flag to the current URL we have, since we redirect
|
|
// to a (possibly) different domain, but we want to be redirected back
|
|
// to the application
|
|
// X-Forwarded-Uri is only the path, so we need to build the entire URL
|
|
s, _ := a.sessions.Get(r, constants.SessionName)
|
|
if _, redirectSet := s.Values[constants.SessionRedirect]; !redirectSet {
|
|
s.Values[constants.SessionRedirect] = fwd.String()
|
|
err = s.Save(r, rw)
|
|
if err != nil {
|
|
a.log.WithError(err).Warning("failed to save session")
|
|
}
|
|
}
|
|
}
|
|
|
|
func (a *Application) forwardHandleNginx(rw http.ResponseWriter, r *http.Request) {
|
|
a.log.WithField("header", r.Header).Trace("tracing headers for debug")
|
|
fwd, err := a.getNginxForwardUrl(r)
|
|
if err != nil {
|
|
a.ReportMisconfiguration(r, fmt.Sprintf("Outpost %s (Provider %s) failed to detect a forward URL from nginx", a.outpostName, a.proxyConfig.Name), map[string]interface{}{
|
|
"provider": a.proxyConfig.Name,
|
|
"outpost": a.outpostName,
|
|
"url": r.URL.String(),
|
|
"headers": cleanseHeaders(r.Header),
|
|
})
|
|
http.Error(rw, "configuration error", http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
claims, err := a.getClaims(r)
|
|
if claims != nil && err == nil {
|
|
a.addHeaders(rw.Header(), claims)
|
|
rw.Header().Set("User-Agent", r.Header.Get("User-Agent"))
|
|
rw.WriteHeader(200)
|
|
a.log.WithField("headers", rw.Header()).Trace("headers written to forward_auth")
|
|
return
|
|
} else if claims == nil && a.IsAllowlisted(fwd) {
|
|
a.log.Trace("path can be accessed without authentication")
|
|
return
|
|
}
|
|
|
|
s, _ := a.sessions.Get(r, constants.SessionName)
|
|
if _, redirectSet := s.Values[constants.SessionRedirect]; !redirectSet {
|
|
s.Values[constants.SessionRedirect] = fwd.String()
|
|
err = s.Save(r, rw)
|
|
if err != nil {
|
|
a.log.WithError(err).Warning("failed to save session before redirect")
|
|
}
|
|
}
|
|
|
|
if fwd.String() != r.URL.String() {
|
|
if strings.HasPrefix(fwd.Path, "/outpost.goauthentik.io") {
|
|
a.log.WithField("url", r.URL.String()).Trace("path begins with /outpost.goauthentik.io, allowing access")
|
|
return
|
|
}
|
|
}
|
|
http.Error(rw, "unauthorized request", http.StatusUnauthorized)
|
|
}
|
|
|
|
func (a *Application) forwardHandleEnvoy(rw http.ResponseWriter, r *http.Request) {
|
|
a.log.WithField("header", r.Header).Trace("tracing headers for debug")
|
|
r.URL.Path = strings.TrimPrefix(r.URL.Path, envoyPrefix)
|
|
r.URL.Host = r.Host
|
|
fwd := r.URL
|
|
// Check if we're authenticated, or the request path is on the allowlist
|
|
claims, err := a.getClaims(r)
|
|
if claims != nil && err == nil {
|
|
a.addHeaders(rw.Header(), claims)
|
|
rw.Header().Set("User-Agent", r.Header.Get("User-Agent"))
|
|
a.log.WithField("headers", rw.Header()).Trace("headers written to forward_auth")
|
|
return
|
|
} else if claims == nil && a.IsAllowlisted(fwd) {
|
|
a.log.Trace("path can be accessed without authentication")
|
|
return
|
|
}
|
|
a.handleAuthStart(rw, r)
|
|
// set the redirect flag to the current URL we have, since we redirect
|
|
// to a (possibly) different domain, but we want to be redirected back
|
|
// to the application
|
|
// X-Forwarded-Uri is only the path, so we need to build the entire URL
|
|
s, _ := a.sessions.Get(r, constants.SessionName)
|
|
if _, redirectSet := s.Values[constants.SessionRedirect]; !redirectSet {
|
|
s.Values[constants.SessionRedirect] = fwd.String()
|
|
err = s.Save(r, rw)
|
|
if err != nil {
|
|
a.log.WithError(err).Warning("failed to save session before redirect")
|
|
}
|
|
}
|
|
}
|