104 lines
2.7 KiB
Go
104 lines
2.7 KiB
Go
package authn
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import (
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"net/http"
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"forge.cadoles.com/Cadoles/go-proxy"
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"forge.cadoles.com/Cadoles/go-proxy/wildcard"
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"forge.cadoles.com/cadoles/bouncer/internal/proxy/director"
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"forge.cadoles.com/cadoles/bouncer/internal/store"
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"github.com/pkg/errors"
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"gitlab.com/wpetit/goweb/logger"
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)
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type Layer struct {
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layerType store.LayerType
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auth Authenticator
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}
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func (l *Layer) Middleware(layer *store.Layer) proxy.Middleware {
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return func(next http.Handler) http.Handler {
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fn := func(w http.ResponseWriter, r *http.Request) {
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ctx := r.Context()
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options, err := fromStoreOptions(layer.Options)
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if err != nil {
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logger.Error(ctx, "could not parse layer options", logger.E(errors.WithStack(err)))
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http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
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return
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}
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if preAuth, ok := l.auth.(PreAuthentication); ok {
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if err := preAuth.PreAuthentication(w, r, layer); err != nil {
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if errors.Is(err, ErrSkipRequest) {
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return
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}
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logger.Error(ctx, "could not execute pre-auth hook", logger.E(errors.WithStack(err)))
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http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
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return
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}
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}
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matches := wildcard.MatchAny(r.URL.String(), options.MatchURLs...)
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if !matches {
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next.ServeHTTP(w, r)
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return
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}
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user, err := l.auth.Authenticate(w, r, layer)
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if err != nil {
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if errors.Is(err, ErrSkipRequest) {
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return
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}
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logger.Error(ctx, "could not authenticate user", logger.E(errors.WithStack(err)))
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http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
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return
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}
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if err := l.injectHeaders(r, options, user); err != nil {
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logger.Error(ctx, "could not inject headers", logger.E(errors.WithStack(err)))
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http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
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return
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}
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if postAuth, ok := l.auth.(PostAuthentication); ok {
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if err := postAuth.PostAuthentication(w, r, layer, user); err != nil {
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if errors.Is(err, ErrSkipRequest) {
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return
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}
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logger.Error(ctx, "could not execute post-auth hook", logger.E(errors.WithStack(err)))
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http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
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return
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}
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}
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next.ServeHTTP(w, r)
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}
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return http.HandlerFunc(fn)
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}
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}
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// LayerType implements director.MiddlewareLayer
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func (l *Layer) LayerType() store.LayerType {
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return l.layerType
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}
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func NewLayer(layerType store.LayerType, auth Authenticator) *Layer {
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return &Layer{
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layerType: layerType,
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auth: auth,
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}
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}
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var _ director.MiddlewareLayer = &Layer{}
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