Example #1
0
func streamLocation(getter ResourceGetter, connInfo client.ConnectionInfoGetter, ctx api.Context, name string, opts runtime.Object, container, path string) (*url.URL, http.RoundTripper, error) {
	pod, err := getPod(getter, ctx, name)
	if err != nil {
		return nil, nil, err
	}

	// Try to figure out a container
	if container == "" {
		if len(pod.Spec.Containers) == 1 {
			container = pod.Spec.Containers[0].Name
		} else {
			return nil, nil, errors.NewBadRequest(fmt.Sprintf("a container name must be specified for pod %s", name))
		}
	}
	nodeHost := pod.Spec.NodeName
	if len(nodeHost) == 0 {
		// If pod has not been assigned a host, return an empty location
		return nil, nil, errors.NewBadRequest(fmt.Sprintf("pod %s does not have a host assigned", name))
	}
	nodeScheme, nodePort, nodeTransport, err := connInfo.GetConnectionInfo(nodeHost)
	if err != nil {
		return nil, nil, err
	}
	params := url.Values{}
	if err := streamParams(params, opts); err != nil {
		return nil, nil, err
	}
	loc := &url.URL{
		Scheme:   nodeScheme,
		Host:     fmt.Sprintf("%s:%d", nodeHost, nodePort),
		Path:     fmt.Sprintf("/%s/%s/%s/%s", path, pod.Namespace, name, container),
		RawQuery: params.Encode(),
	}
	return loc, nodeTransport, nil
}
Example #2
0
// NoNamespaceKeyFunc is the default function for constructing etcd paths to a resource relative to prefix enforcing namespace rules.
// If a namespace is on context, it errors.
func NoNamespaceKeyFunc(ctx api.Context, prefix string, name string) (string, error) {
	ns, ok := api.NamespaceFrom(ctx)
	if ok && len(ns) > 0 {
		return "", kubeerr.NewBadRequest("Namespace parameter is not allowed.")
	}
	if len(name) == 0 {
		return "", kubeerr.NewBadRequest("Name parameter required.")
	}
	return path.Join(prefix, name), nil
}
Example #3
0
// transformDecodeError adds additional information when a decode fails.
func transformDecodeError(typer runtime.ObjectTyper, baseErr error, into runtime.Object, body []byte) error {
	_, kind, err := typer.ObjectVersionAndKind(into)
	if err != nil {
		return err
	}
	if version, dataKind, err := typer.DataVersionAndKind(body); err == nil && len(dataKind) > 0 {
		return errors.NewBadRequest(fmt.Sprintf("%s in version %s cannot be handled as a %s: %v", dataKind, version, kind, baseErr))
	}
	return errors.NewBadRequest(fmt.Sprintf("the object provided is unrecognized (must be of type %s): %v", kind, baseErr))
}
Example #4
0
// NamespaceKeyFunc is the default function for constructing etcd paths to a resource relative to prefix enforcing namespace rules.
// If no namespace is on context, it errors.
func NamespaceKeyFunc(ctx api.Context, prefix string, name string) (string, error) {
	key := NamespaceKeyRootFunc(ctx, prefix)
	ns, ok := api.NamespaceFrom(ctx)
	if !ok || len(ns) == 0 {
		return "", kubeerr.NewBadRequest("Namespace parameter required.")
	}
	if len(name) == 0 {
		return "", kubeerr.NewBadRequest("Name parameter required.")
	}
	key = key + "/" + name
	return key, nil
}
Example #5
0
// checkName checks the provided name against the request
func checkName(obj runtime.Object, name, namespace string, namer ScopeNamer) error {
	if objNamespace, objName, err := namer.ObjectName(obj); err == nil {
		if objName != name {
			return errors.NewBadRequest("the name of the object does not match the name on the URL")
		}
		if len(namespace) > 0 {
			if len(objNamespace) > 0 && objNamespace != namespace {
				return errors.NewBadRequest("the namespace of the object does not match the namespace on the request")
			}
		}
	}
	return nil
}
Example #6
0
// Get returns a streamer resource with the contents of the build log
func (r *REST) Get(ctx kapi.Context, name string, opts runtime.Object) (runtime.Object, error) {
	buildLogOpts, ok := opts.(*api.BuildLogOptions)
	if !ok {
		return nil, errors.NewBadRequest("did not get an expected options.")
	}
	build, err := r.BuildRegistry.GetBuild(ctx, name)
	if err != nil {
		return nil, errors.NewNotFound("build", name)
	}
	switch build.Status {
	// Build has not launched, wait til it runs
	case api.BuildStatusNew, api.BuildStatusPending:
		if buildLogOpts.NoWait {
			glog.V(4).Infof("Build %s/%s is in %s state, nothing to retrieve", build.Namespace, name, build.Status)
			// return empty content if not waiting for build
			return &genericrest.LocationStreamer{}, nil
		}
		glog.V(4).Infof("Build %s/%s is in %s state, waiting for Build to start", build.Namespace, name, build.Status)
		err := r.waitForBuild(ctx, build)
		if err != nil {
			return nil, err
		}

	// The build was cancelled
	case api.BuildStatusCancelled:
		return nil, errors.NewBadRequest(fmt.Sprintf("build %s/%s was cancelled", build.Namespace, build.Name))

	// An error occurred launching the build, return an error
	case api.BuildStatusError:
		return nil, errors.NewBadRequest(fmt.Sprintf("build %s/%s is in an error state", build.Namespace, build.Name))

	case api.BuildStatusNoOpenshift:
		return nil, errors.NewBadRequest(fmt.Sprintf("build %s/%s cannot proceeed. You need to upgrade to OpenShift in order to take advantage of this feature", build.Namespace, build.Name))

	}
	// The container should be the default build container, so setting it to blank
	buildPodName := buildutil.GetBuildPodName(build)
	logOpts := &kapi.PodLogOptions{
		Follow: buildLogOpts.Follow,
	}
	location, transport, err := pod.LogLocation(r.PodGetter, r.ConnectionInfo, ctx, buildPodName, logOpts)
	if err != nil {
		return nil, errors.NewBadRequest(err.Error())
	}
	return &genericrest.LocationStreamer{
		Location:    location,
		Transport:   transport,
		ContentType: "text/plain",
		Flush:       buildLogOpts.Follow,
	}, nil
}
Example #7
0
// ParseNameAndID splits a string into its name component and ID component, and returns an error
// if the string is not in the right form.
func ParseNameAndID(input string) (name string, id string, err error) {
	segments := strings.Split(input, "@")
	switch len(segments) {
	case 2:
		name = segments[0]
		id = segments[1]
		if len(name) == 0 || len(id) == 0 {
			err = errors.NewBadRequest("ImageStreamImages must be retrieved with <name>@<id>")
		}
	default:
		err = errors.NewBadRequest("ImageStreamImages must be retrieved with <name>@<id>")
	}
	return
}
Example #8
0
// nameAndTag splits a string into its name component and tag component, and returns an error
// if the string is not in the right form.
func nameAndTag(id string) (name string, tag string, err error) {
	segments := strings.Split(id, ":")
	switch len(segments) {
	case 2:
		name = segments[0]
		tag = segments[1]
		if len(name) == 0 || len(tag) == 0 {
			err = errors.NewBadRequest("ImageStreamTags must be retrieved with <name>:<tag>")
		}
	default:
		err = errors.NewBadRequest("ImageStreamTags must be retrieved with <name>:<tag>")
	}
	return
}
Example #9
0
// ExecLocation returns the exec URL for a pod container. If opts.Container is blank
// and only one container is present in the pod, that container is used.
func ExecLocation(getter ResourceGetter, connInfo client.ConnectionInfoGetter, ctx api.Context, name string, opts *api.PodExecOptions) (*url.URL, http.RoundTripper, error) {

	pod, err := getPod(getter, ctx, name)
	if err != nil {
		return nil, nil, err
	}

	// Try to figure out a container
	container := opts.Container
	if container == "" {
		if len(pod.Spec.Containers) == 1 {
			container = pod.Spec.Containers[0].Name
		} else {
			return nil, nil, errors.NewBadRequest(fmt.Sprintf("a container name must be specified for pod %s", name))
		}
	}
	nodeHost := pod.Spec.NodeName
	if len(nodeHost) == 0 {
		// If pod has not been assigned a host, return an empty location
		return nil, nil, errors.NewBadRequest(fmt.Sprintf("pod %s does not have a host assigned", name))
	}
	nodeScheme, nodePort, nodeTransport, err := connInfo.GetConnectionInfo(nodeHost)
	if err != nil {
		return nil, nil, err
	}
	params := url.Values{}
	if opts.Stdin {
		params.Add(api.ExecStdinParam, "1")
	}
	if opts.Stdout {
		params.Add(api.ExecStdoutParam, "1")
	}
	if opts.Stderr {
		params.Add(api.ExecStderrParam, "1")
	}
	if opts.TTY {
		params.Add(api.ExecTTYParam, "1")
	}
	for _, c := range opts.Command {
		params.Add("command", c)
	}
	loc := &url.URL{
		Scheme:   nodeScheme,
		Host:     fmt.Sprintf("%s:%d", nodeHost, nodePort),
		Path:     fmt.Sprintf("/exec/%s/%s/%s", pod.Namespace, name, container),
		RawQuery: params.Encode(),
	}
	return loc, nodeTransport, nil
}
Example #10
0
// Update replaces a given Route instance with an existing instance in rs.registry.
func (rs *REST) Update(ctx kapi.Context, obj runtime.Object) (runtime.Object, bool, error) {
	route, ok := obj.(*api.Route)
	if !ok {
		return nil, false, errors.NewBadRequest(fmt.Sprintf("not a route: %#v", obj))
	}
	if !kapi.ValidNamespace(ctx, &route.ObjectMeta) {
		return nil, false, errors.NewConflict("route", route.Namespace, fmt.Errorf("Route.Namespace does not match the provided context"))
	}

	old, err := rs.Get(ctx, route.Name)
	if err != nil {
		return nil, false, err
	}
	if errs := validation.ValidateRouteUpdate(route, old.(*api.Route)); len(errs) > 0 {
		return nil, false, errors.NewInvalid("route", route.Name, errs)
	}

	// TODO: Convert to generic etcd
	// TODO: Call ValidateRouteUpdate->ValidateObjectMetaUpdate
	// TODO: In the UpdateStrategy.PrepareForUpdate, set the HostGeneratedAnnotationKey annotation to "false" if the updated route object modifies the host

	err = rs.registry.UpdateRoute(ctx, route)
	if err != nil {
		return nil, false, err
	}
	out, err := rs.registry.GetRoute(ctx, route.Name)
	return out, false, err
}
Example #11
0
// ResourceLocation returns an URL and transport which one can use to send traffic for the specified node.
func ResourceLocation(getter ResourceGetter, connection client.ConnectionInfoGetter, ctx api.Context, id string) (*url.URL, http.RoundTripper, error) {
	name, portReq, valid := util.SplitPort(id)
	if !valid {
		return nil, nil, errors.NewBadRequest(fmt.Sprintf("invalid node request %q", id))
	}

	nodeObj, err := getter.Get(ctx, name)
	if err != nil {
		return nil, nil, err
	}
	node := nodeObj.(*api.Node)
	hostIP, err := nodeutil.GetNodeHostIP(node)
	if err != nil {
		return nil, nil, err
	}
	host := hostIP.String()

	if portReq == "" || strconv.Itoa(ports.KubeletPort) == portReq {
		scheme, port, transport, err := connection.GetConnectionInfo(host)
		if err != nil {
			return nil, nil, err
		}
		return &url.URL{
				Scheme: scheme,
				Host: net.JoinHostPort(
					host,
					strconv.FormatUint(uint64(port), 10),
				),
			},
			transport,
			nil
	}
	return &url.URL{Host: net.JoinHostPort(host, portReq)}, nil, nil
}
Example #12
0
// ResourceLocation returns a URL to which one can send traffic for the specified node.
func ResourceLocation(getter ResourceGetter, connection client.ConnectionInfoGetter, ctx api.Context, id string) (*url.URL, http.RoundTripper, error) {
	name, portReq, valid := util.SplitPort(id)
	if !valid {
		return nil, nil, errors.NewBadRequest(fmt.Sprintf("invalid node request %q", id))
	}

	nodeObj, err := getter.Get(ctx, name)
	if err != nil {
		return nil, nil, err
	}
	node := nodeObj.(*api.Node)
	host := node.Name // TODO: use node's IP, don't expect the name to resolve.

	if portReq != "" {
		return &url.URL{Host: net.JoinHostPort(host, portReq)}, nil, nil
	}

	scheme, port, transport, err := connection.GetConnectionInfo(host)
	if err != nil {
		return nil, nil, err
	}

	return &url.URL{
			Scheme: scheme,
			Host: net.JoinHostPort(
				host,
				strconv.FormatUint(uint64(port), 10),
			),
		},
		transport,
		nil
}
Example #13
0
// Create registers a given new ResourceAccessReview instance to r.registry.
func (r *REST) Create(ctx kapi.Context, obj runtime.Object) (runtime.Object, error) {
	resourceAccessReview, ok := obj.(*authorizationapi.ResourceAccessReview)
	if !ok {
		return nil, errors.NewBadRequest(fmt.Sprintf("not a resourceAccessReview: %#v", obj))
	}
	if err := kutilerrors.NewAggregate(authorizationvalidation.ValidateResourceAccessReview(resourceAccessReview)); err != nil {
		return nil, err
	}

	namespace := kapi.NamespaceValue(ctx)

	attributes := &authorizer.DefaultAuthorizationAttributes{
		Verb:     resourceAccessReview.Verb,
		Resource: resourceAccessReview.Resource,
	}

	users, groups, err := r.authorizer.GetAllowedSubjects(ctx, attributes)
	if err != nil {
		return nil, err
	}

	response := &authorizationapi.ResourceAccessReviewResponse{
		Namespace: namespace,
		Users:     users,
		Groups:    groups,
	}

	return response, nil
}
// ServeHTTP handles the proxy request
func (h *UpgradeAwareProxyHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
	h.err = nil
	if len(h.Location.Scheme) == 0 {
		h.Location.Scheme = "http"
	}
	if h.tryUpgrade(w, req) {
		return
	}
	if h.UpgradeRequired {
		h.err = errors.NewBadRequest("Upgrade request required")
		return
	}

	if h.Transport == nil {
		h.Transport = h.defaultProxyTransport(req.URL)
	}

	loc := *h.Location
	loc.RawQuery = req.URL.RawQuery
	newReq, err := http.NewRequest(req.Method, loc.String(), req.Body)
	if err != nil {
		h.err = err
		return
	}
	newReq.Header = req.Header

	proxy := httputil.NewSingleHostReverseProxy(&url.URL{Scheme: h.Location.Scheme, Host: h.Location.Host})
	proxy.Transport = h.Transport
	proxy.FlushInterval = h.FlushInterval
	proxy.ServeHTTP(w, newReq)
}
Example #15
0
func (g *podGetter) Get(ctx kapi.Context, name string) (runtime.Object, error) {
	ns, ok := kapi.NamespaceFrom(ctx)
	if !ok {
		return nil, errors.NewBadRequest("namespace parameter required.")
	}
	return g.podsNamespacer.Pods(ns).Get(name)
}
Example #16
0
// ResourceLocation returns a URL to which one can send traffic for the specified service.
func (rs *REST) ResourceLocation(ctx api.Context, id string) (*url.URL, http.RoundTripper, error) {
	// Allow ID as "svcname" or "svcname:port".
	svcName, portStr, valid := util.SplitPort(id)
	if !valid {
		return nil, nil, errors.NewBadRequest(fmt.Sprintf("invalid service request %q", id))
	}

	eps, err := rs.endpoints.GetEndpoints(ctx, svcName)
	if err != nil {
		return nil, nil, err
	}
	if len(eps.Subsets) == 0 {
		return nil, nil, fmt.Errorf("no endpoints available for %q", svcName)
	}
	// Pick a random Subset to start searching from.
	ssSeed := rand.Intn(len(eps.Subsets))
	// Find a Subset that has the port.
	for ssi := 0; ssi < len(eps.Subsets); ssi++ {
		ss := &eps.Subsets[(ssSeed+ssi)%len(eps.Subsets)]
		for i := range ss.Ports {
			if ss.Ports[i].Name == portStr {
				// Pick a random address.
				ip := ss.Addresses[rand.Intn(len(ss.Addresses))].IP
				port := ss.Ports[i].Port
				// We leave off the scheme ('http://') because we have no idea what sort of server
				// is listening at this endpoint.
				return &url.URL{
					Host: net.JoinHostPort(ip, strconv.Itoa(port)),
				}, nil, nil
			}
		}
	}
	return nil, nil, fmt.Errorf("no endpoints available for %q", id)
}
Example #17
0
// ResourceLocation returns a URL to which one can send traffic for the specified pod.
func ResourceLocation(getter ResourceGetter, ctx api.Context, id string) (*url.URL, http.RoundTripper, error) {
	// Allow ID as "podname" or "podname:port".  If port is not specified,
	// try to use the first defined port on the pod.
	name, port, valid := util.SplitPort(id)
	if !valid {
		return nil, nil, errors.NewBadRequest(fmt.Sprintf("invalid pod request %q", id))
	}
	// TODO: if port is not a number but a "(container)/(portname)", do a name lookup.

	pod, err := getPod(getter, ctx, name)
	if err != nil {
		return nil, nil, err
	}

	// Try to figure out a port.
	if port == "" {
		for i := range pod.Spec.Containers {
			if len(pod.Spec.Containers[i].Ports) > 0 {
				port = fmt.Sprintf("%d", pod.Spec.Containers[i].Ports[0].ContainerPort)
				break
			}
		}
	}

	// We leave off the scheme ('http://') because we have no idea what sort of server
	// is listening at this endpoint.
	loc := &url.URL{}
	if port == "" {
		loc.Host = pod.Status.PodIP
	} else {
		loc.Host = net.JoinHostPort(pod.Status.PodIP, port)
	}
	return loc, nil, nil
}
Example #18
0
// Create registers a given new ResourceAccessReview instance to r.registry.
func (r *REST) Create(ctx kapi.Context, obj runtime.Object) (runtime.Object, error) {
	subjectAccessReview, ok := obj.(*authorizationapi.SubjectAccessReview)
	if !ok {
		return nil, kerrors.NewBadRequest(fmt.Sprintf("not a subjectAccessReview: %#v", obj))
	}
	if err := kutilerrors.NewAggregate(authorizationvalidation.ValidateSubjectAccessReview(subjectAccessReview)); err != nil {
		return nil, err
	}

	var userToCheck user.Info
	if (len(subjectAccessReview.User) == 0) && (len(subjectAccessReview.Groups) == 0) {
		// if no user or group was specified, use the info from the context
		ctxUser, exists := kapi.UserFrom(ctx)
		if !exists {
			return nil, kerrors.NewBadRequest("user missing from context")
		}
		userToCheck = ctxUser

	} else {
		userToCheck = &user.DefaultInfo{
			Name:   subjectAccessReview.User,
			Groups: subjectAccessReview.Groups.List(),
		}

	}

	namespace := kapi.NamespaceValue(ctx)
	requestContext := kapi.WithUser(ctx, userToCheck)

	attributes := &authorizer.DefaultAuthorizationAttributes{
		Verb:     subjectAccessReview.Verb,
		Resource: subjectAccessReview.Resource,
	}

	allowed, reason, err := r.authorizer.Authorize(requestContext, attributes)
	if err != nil {
		return nil, err
	}

	response := &authorizationapi.SubjectAccessReviewResponse{
		Namespace: namespace,
		Allowed:   allowed,
		Reason:    reason,
	}

	return response, nil
}
Example #19
0
// Update associates an identity with a user.
// Both the identity and user must already exist.
// If the identity is associated with another user already, it is disassociated.
func (s *REST) Update(ctx kapi.Context, obj runtime.Object) (runtime.Object, bool, error) {
	mapping, ok := obj.(*api.UserIdentityMapping)
	if !ok {
		return nil, false, kerrs.NewBadRequest("invalid type")
	}
	Strategy.PrepareForUpdate(mapping, nil)
	return s.createOrUpdate(ctx, mapping, false)
}
Example #20
0
func parseSelectorQueryParams(query url.Values, version, apiResource string) (label labels.Selector, field fields.Selector, err error) {
	labelString := query.Get(api.LabelSelectorQueryParam(version))
	label, err = labels.Parse(labelString)
	if err != nil {
		return nil, nil, errors.NewBadRequest(fmt.Sprintf("The 'labels' selector parameter (%s) could not be parsed: %v", labelString, err))
	}

	convertToInternalVersionFunc := func(label, value string) (newLabel, newValue string, err error) {
		return api.Scheme.ConvertFieldLabel(version, apiResource, label, value)
	}
	fieldString := query.Get(api.FieldSelectorQueryParam(version))
	field, err = fields.ParseAndTransformSelector(fieldString, convertToInternalVersionFunc)
	if err != nil {
		return nil, nil, errors.NewBadRequest(fmt.Sprintf("The 'fields' selector parameter (%s) could not be parsed: %v", fieldString, err))
	}
	return label, field, nil
}
Example #21
0
// Create associates a user and identity if they both exist, and the identity is not already mapped to a user
func (s *REST) Create(ctx kapi.Context, obj runtime.Object) (runtime.Object, error) {
	mapping, ok := obj.(*api.UserIdentityMapping)
	if !ok {
		return nil, kerrs.NewBadRequest("invalid type")
	}
	Strategy.PrepareForCreate(mapping)
	createdMapping, _, err := s.createOrUpdate(ctx, obj, true)
	return createdMapping, err
}
// transformResponse converts an API response into a structured API object.
func (r *Request) transformResponse(resp *http.Response, req *http.Request) ([]byte, bool, error) {
	defer resp.Body.Close()

	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		return nil, false, err
	}

	// Did the server give us a status response?
	isStatusResponse := false
	var status api.Status
	if err := r.codec.DecodeInto(body, &status); err == nil && status.Status != "" {
		isStatusResponse = true
	}

	switch {
	case resp.StatusCode == http.StatusSwitchingProtocols:
		// no-op, we've been upgraded
	case resp.StatusCode < http.StatusOK || resp.StatusCode > http.StatusPartialContent:
		if !isStatusResponse {
			var err error = &UnexpectedStatusError{
				Request:  req,
				Response: resp,
				Body:     string(body),
			}
			// TODO: handle other error classes we know about
			switch resp.StatusCode {
			case http.StatusConflict:
				if req.Method == "POST" {
					err = errors.NewAlreadyExists(r.resource, r.resourceName)
				} else {
					err = errors.NewConflict(r.resource, r.resourceName, err)
				}
			case http.StatusNotFound:
				err = errors.NewNotFound(r.resource, r.resourceName)
			case http.StatusBadRequest:
				err = errors.NewBadRequest(err.Error())
			}
			return nil, false, err
		}
		return nil, false, errors.FromObject(&status)
	}

	// If the server gave us a status back, look at what it was.
	if isStatusResponse && status.Status != api.StatusSuccess {
		// "Working" requests need to be handled specially.
		// "Failed" requests are clearly just an error and it makes sense to return them as such.
		return nil, false, errors.FromObject(&status)
	}

	created := resp.StatusCode == http.StatusCreated
	return body, created, err
}
Example #23
0
// ServeHTTP handles the proxy request
func (h *UpgradeAwareProxyHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
	h.err = nil
	if len(h.Location.Scheme) == 0 {
		h.Location.Scheme = "http"
	}
	if h.tryUpgrade(w, req) {
		return
	}
	if h.UpgradeRequired {
		h.err = errors.NewBadRequest("Upgrade request required")
		return
	}

	loc := *h.Location
	loc.RawQuery = req.URL.RawQuery

	// If original request URL ended in '/', append a '/' at the end of the
	// of the proxy URL
	if !strings.HasSuffix(loc.Path, "/") && strings.HasSuffix(req.URL.Path, "/") {
		loc.Path += "/"
	}

	// From pkg/apiserver/proxy.go#ServeHTTP:
	// Redirect requests with an empty path to a location that ends with a '/'
	// This is essentially a hack for https://github.com/GoogleCloudPlatform/kubernetes/issues/4958.
	// Note: Keep this code after tryUpgrade to not break that flow.
	if len(loc.Path) == 0 {
		var queryPart string
		if len(req.URL.RawQuery) > 0 {
			queryPart = "?" + req.URL.RawQuery
		}
		w.Header().Set("Location", req.URL.Path+"/"+queryPart)
		w.WriteHeader(http.StatusMovedPermanently)
		return
	}

	if h.Transport == nil {
		h.Transport = h.defaultProxyTransport(req.URL)
	}

	newReq, err := http.NewRequest(req.Method, loc.String(), req.Body)
	if err != nil {
		h.err = err
		return
	}
	newReq.Header = req.Header

	proxy := httputil.NewSingleHostReverseProxy(&url.URL{Scheme: h.Location.Scheme, Host: h.Location.Host})
	proxy.Transport = h.Transport
	proxy.FlushInterval = h.FlushInterval
	proxy.ServeHTTP(w, newReq)
}
Example #24
0
// queryToObject converts query parameters into a structured internal object by
// kind. The caller must cast the returned object to the matching internal Kind
// to use it.
// TODO: add appropriate structured error responses
func queryToObject(query url.Values, scope RequestScope, kind string) (runtime.Object, error) {
	versioned, err := scope.Creater.New(scope.ServerAPIVersion, kind)
	if err != nil {
		// programmer error
		return nil, err
	}
	if err := scope.Convertor.Convert(&query, versioned); err != nil {
		return nil, errors.NewBadRequest(err.Error())
	}
	out, err := scope.Convertor.ConvertToVersion(versioned, "")
	if err != nil {
		// programmer error
		return nil, err
	}
	return out, nil
}
Example #25
0
func (m *VirtualStorage) updateRoleBinding(ctx kapi.Context, obj runtime.Object, allowEscalation bool) (*authorizationapi.RoleBinding, bool, error) {
	roleBinding, ok := obj.(*authorizationapi.RoleBinding)
	if !ok {
		return nil, false, kapierrors.NewBadRequest(fmt.Sprintf("obj is not a role: %#v", obj))
	}

	old, err := m.Get(ctx, roleBinding.Name)
	if err != nil {
		return nil, false, err
	}

	if err := rest.BeforeUpdate(m.UpdateStrategy, ctx, obj, old); err != nil {
		return nil, false, err
	}

	if err := m.validateReferentialIntegrity(ctx, roleBinding); err != nil {
		return nil, false, err
	}
	if !allowEscalation {
		if err := m.confirmNoEscalation(ctx, roleBinding); err != nil {
			return nil, false, err
		}
	}

	policyBinding, err := m.getPolicyBindingForPolicy(ctx, roleBinding.RoleRef.Namespace, allowEscalation)
	if err != nil {
		return nil, false, err
	}

	previousRoleBinding, exists := policyBinding.RoleBindings[roleBinding.Name]
	if !exists {
		return nil, false, kapierrors.NewNotFound("RoleBinding", roleBinding.Name)
	}
	if previousRoleBinding.RoleRef != roleBinding.RoleRef {
		return nil, false, errors.New("roleBinding.RoleRef may not be modified")
	}

	roleBinding.ResourceVersion = policyBinding.ResourceVersion
	policyBinding.RoleBindings[roleBinding.Name] = roleBinding
	policyBinding.LastModified = util.Now()

	if err := m.BindingRegistry.UpdatePolicyBinding(ctx, policyBinding); err != nil {
		return nil, false, err
	}
	return roleBinding, false, nil
}
// BeforeUpdate ensures that common operations for all resources are performed on update. It only returns
// errors that can be converted to api.Status. It will invoke update validation with the provided existing
// and updated objects.
func BeforeUpdate(strategy RESTUpdateStrategy, ctx api.Context, obj, old runtime.Object) error {
	objectMeta, kind, kerr := objectMetaAndKind(strategy, obj)
	if kerr != nil {
		return kerr
	}
	if strategy.NamespaceScoped() {
		if !api.ValidNamespace(ctx, objectMeta) {
			return errors.NewBadRequest("the namespace of the provided object does not match the namespace sent on the request")
		}
	} else {
		objectMeta.Namespace = api.NamespaceNone
	}
	if errs := strategy.ValidateUpdate(obj, old); len(errs) > 0 {
		return errors.NewInvalid(kind, objectMeta.Name, errs)
	}
	return nil
}
Example #27
0
func (d *denyExecOnPrivileged) Admit(a admission.Attributes) (err error) {
	connectRequest, ok := a.GetObject().(*rest.ConnectRequest)
	if !ok {
		return errors.NewBadRequest("a connect request was received, but could not convert the request object.")
	}
	// Only handle exec requests on pods
	if connectRequest.ResourcePath != "pods/exec" {
		return nil
	}
	pod, err := d.client.Pods(a.GetNamespace()).Get(connectRequest.Name)
	if err != nil {
		return admission.NewForbidden(a, err)
	}
	if isPrivileged(pod) {
		return admission.NewForbidden(a, fmt.Errorf("Cannot exec into a privileged container"))
	}
	return nil
}
Example #28
0
// Create processes a Template and creates a new list of objects
func (s *REST) Create(ctx kapi.Context, obj runtime.Object) (runtime.Object, error) {
	tpl, ok := obj.(*api.Template)
	if !ok {
		return nil, errors.NewBadRequest("not a template")
	}
	if errs := templatevalidation.ValidateProcessedTemplate(tpl); len(errs) > 0 {
		return nil, errors.NewInvalid("template", tpl.Name, errs)
	}

	generators := map[string]generator.Generator{
		"expression": generator.NewExpressionValueGenerator(rand.New(rand.NewSource(time.Now().UnixNano()))),
	}
	processor := template.NewProcessor(generators)
	if errs := processor.Process(tpl); len(errs) > 0 {
		glog.V(1).Infof(utilerr.NewAggregate(errs).Error())
		return nil, errors.NewInvalid("template", tpl.Name, errs)
	}

	return tpl, nil
}
Example #29
0
// ServeHTTP implements rest.HookHandler
func (c *controller) ServeHTTP(w http.ResponseWriter, req *http.Request, ctx kapi.Context, name, subpath string) error {
	parts := strings.Split(subpath, "/")
	if len(parts) < 2 {
		return errors.NewBadRequest(fmt.Sprintf("unexpected hook subpath %s", subpath))
	}
	secret, hookType := parts[0], parts[1]

	plugin, ok := c.plugins[hookType]
	if !ok {
		return errors.NewNotFound("BuildConfigHook", hookType)
	}

	config, err := c.registry.GetBuildConfig(ctx, name)
	if err != nil {
		// clients should not be able to find information about build configs in the system unless the config exists
		// and the secret matches
		return errors.NewUnauthorized(fmt.Sprintf("the webhook %q for %q did not accept your secret", hookType, name))
	}

	revision, proceed, err := plugin.Extract(config, secret, "", req)
	switch err {
	case webhook.ErrSecretMismatch, webhook.ErrHookNotEnabled:
		return errors.NewUnauthorized(fmt.Sprintf("the webhook %q for %q did not accept your secret", hookType, name))
	case nil:
	default:
		return errors.NewInternalError(fmt.Errorf("hook failed: %v", err))
	}

	if !proceed {
		return nil
	}

	request := &buildapi.BuildRequest{
		ObjectMeta: kapi.ObjectMeta{Name: name},
		Revision:   revision,
	}
	if _, err := c.instantiator.Instantiate(config.Namespace, request); err != nil {
		return errors.NewInternalError(fmt.Errorf("could not generate a build: %v", err))
	}
	return nil
}
Example #30
0
// ResourceLocation returns a URL to which one can send traffic for the specified pod.
func (rs *REST) ResourceLocation(ctx api.Context, id string) (string, error) {
	// Allow ID as "podname" or "podname:port".  If port is not specified,
	// try to use the first defined port on the pod.
	parts := strings.Split(id, ":")
	if len(parts) > 2 {
		return "", errors.NewBadRequest(fmt.Sprintf("invalid pod request %q", id))
	}
	name := parts[0]
	port := ""
	if len(parts) == 2 {
		// TODO: if port is not a number but a "(container)/(portname)", do a name lookup.
		port = parts[1]
	}

	obj, err := rs.Get(ctx, name)
	if err != nil {
		return "", err
	}
	pod := obj.(*api.Pod)
	if pod == nil {
		return "", nil
	}

	// Try to figure out a port.
	if port == "" {
		for i := range pod.Spec.Containers {
			if len(pod.Spec.Containers[i].Ports) > 0 {
				port = fmt.Sprintf("%d", pod.Spec.Containers[i].Ports[0].ContainerPort)
				break
			}
		}
	}

	// We leave off the scheme ('http://') because we have no idea what sort of server
	// is listening at this endpoint.
	loc := pod.Status.PodIP
	if port != "" {
		loc += fmt.Sprintf(":%s", port)
	}
	return loc, nil
}