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connector_token_create.go
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connector_token_create.go
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package client
import (
"context"
"fmt"
"strconv"
"strings"
"github.com/skupperproject/skupper/api/types"
"github.com/skupperproject/skupper/pkg/certs"
"github.com/skupperproject/skupper/pkg/kube"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
// TODO: should these move to types?
type HostPort struct {
Host string
Port string
}
type RouterHostPorts struct {
Edge HostPort
InterRouter HostPort
Hosts string
LocalOnly bool
}
func configureHostPortsFromRoutes(result *RouterHostPorts, cli *VanClient, namespace string) (bool, error) {
if namespace == "" {
namespace = cli.Namespace
}
if cli.RouteClient == nil {
return false, nil
} else {
interRouterRoute, err1 := cli.RouteClient.Routes(namespace).Get(context.TODO(), "skupper-inter-router", metav1.GetOptions{})
edgeRoute, err2 := cli.RouteClient.Routes(namespace).Get(context.TODO(), "skupper-edge", metav1.GetOptions{})
if err1 != nil && err2 != nil && errors.IsNotFound(err1) && errors.IsNotFound(err2) {
return false, nil
} else if err1 != nil {
return false, err1
} else if err2 != nil {
return false, err2
} else {
result.Edge.Host = edgeRoute.Spec.Host
result.Edge.Port = "443"
result.InterRouter.Host = interRouterRoute.Spec.Host
result.InterRouter.Port = "443"
result.Hosts = edgeRoute.Spec.Host + "," + interRouterRoute.Spec.Host
return true, nil
}
}
}
func configureHostPortsForContourProxies(result *RouterHostPorts, cli *VanClient, namespace string) bool {
if getIngressHost(result, cli, namespace, types.IngressContourHttpProxyString) {
result.InterRouter.Host = strings.Join([]string{types.InterRouterIngressPrefix, namespace, result.InterRouter.Host}, ".")
result.Edge.Host = strings.Join([]string{types.EdgeIngressPrefix, namespace, result.Edge.Host}, ".")
result.InterRouter.Port = "443"
result.Edge.Port = "443"
result.Hosts = strings.Join([]string{result.InterRouter.Host, result.Edge.Host}, ",")
return true
}
return false
}
func getNodePorts(result *RouterHostPorts, service *corev1.Service) bool {
foundEdge, foundInterRouter := false, false
for _, p := range service.Spec.Ports {
if p.Name == "inter-router" {
result.InterRouter.Port = strconv.Itoa(int(p.NodePort))
foundInterRouter = true
} else if p.Name == "edge" {
result.Edge.Port = strconv.Itoa(int(p.NodePort))
foundEdge = true
}
}
return foundEdge && foundInterRouter
}
func getIngressHost(result *RouterHostPorts, cli *VanClient, namespace string, ingressType string) bool {
config, err := cli.SiteConfigInspectInNamespace(context.TODO(), nil, namespace)
if err != nil {
fmt.Printf("Failed to look up ingress host: %s, ", err)
fmt.Println()
return false
}
if config == nil {
return false
}
if ingressType != "" && config.Spec.Ingress != ingressType {
return false
}
if host := config.Spec.GetRouterIngressHost(); host != "" {
result.Hosts = host
result.InterRouter.Host = result.Hosts
result.Edge.Host = result.Hosts
return true
}
return false
}
func configureHostPorts(result *RouterHostPorts, cli *VanClient, namespace string) bool {
if namespace == "" {
namespace = cli.Namespace
}
ok, err := configureHostPortsFromRoutes(result, cli, namespace)
if err != nil {
return false
} else if ok {
return ok
} else {
service, err := cli.KubeClient.CoreV1().Services(namespace).Get(context.TODO(), types.TransportServiceName, metav1.GetOptions{})
if err != nil {
return false
} else {
if service.Spec.Type == corev1.ServiceTypeLoadBalancer {
host := kube.GetLoadBalancerHostOrIp(service)
if host != "" {
result.Hosts = host
result.InterRouter.Host = host
result.InterRouter.Port = "55671"
result.Edge.Host = host
result.Edge.Port = "45671"
return true
} else {
fmt.Printf("LoadBalancer Host/IP not yet allocated for service %s, ", service.ObjectMeta.Name)
fmt.Println()
}
} else if service.Spec.Type == corev1.ServiceTypeNodePort && getNodePorts(result, service) {
getIngressHost(result, cli, namespace, "")
return true
} else if ok := configureHostPortsForContourProxies(result, cli, namespace); ok {
return true
} else {
ingressRoutes, err := kube.GetIngressRoutes(types.IngressName, cli.Namespace, cli)
if err != nil {
fmt.Printf("Could not check for ingress: %s", err)
fmt.Println()
} else if len(ingressRoutes) > 0 {
var edgeHost string
var interRouterHost string
for _, route := range ingressRoutes {
if route.ServicePort == int(types.InterRouterListenerPort) {
interRouterHost = route.Host
} else if route.ServicePort == int(types.EdgeListenerPort) {
edgeHost = route.Host
}
}
if edgeHost != "" && interRouterHost != "" {
result.Edge.Host = edgeHost
result.Edge.Port = "443"
result.InterRouter.Host = interRouterHost
result.InterRouter.Port = "443"
result.Hosts = edgeHost + "," + interRouterHost
return true
}
}
}
result.LocalOnly = true
host := fmt.Sprintf("%s.%s", types.TransportServiceName, namespace)
result.Hosts = host
result.InterRouter.Host = host
result.InterRouter.Port = "55671"
result.Edge.Host = host
result.Edge.Port = "45671"
return true
}
}
}
func (cli *VanClient) getSiteId(ctx context.Context, namespace string) (string, error) {
if namespace == "" {
namespace = cli.Namespace
}
siteConfig, err := cli.SiteConfigInspectInNamespace(ctx, nil, namespace)
if err != nil {
return "", err
}
if siteConfig == nil {
return "", nil
}
return siteConfig.Reference.UID, nil
}
func (cli *VanClient) ConnectorTokenCreateFromTemplate(ctx context.Context, tokenName string, templateName string) (*corev1.Secret, bool, error) {
current, err := cli.getRouterConfig(ctx, "")
if err != nil {
return nil, false, err
}
if current.IsEdge() {
return nil, false, fmt.Errorf("Edge configuration cannot accept connections")
}
template, err := cli.KubeClient.CoreV1().Secrets(cli.Namespace).Get(ctx, templateName, metav1.GetOptions{})
if err != nil {
return nil, false, err
}
var hostPorts RouterHostPorts
if !configureHostPorts(&hostPorts, cli, cli.Namespace) {
// TODO: return the actual error
return nil, false, fmt.Errorf("Could not determine host/ports for token")
}
// Store our siteID in the token, to prevent later self-connection.
siteId, err := cli.getSiteId(ctx, "")
if err != nil {
return nil, false, err
}
secret := &corev1.Secret{
TypeMeta: metav1.TypeMeta{
APIVersion: "v1",
Kind: "Secret",
},
ObjectMeta: metav1.ObjectMeta{
Name: tokenName,
Labels: map[string]string{
types.SkupperTypeQualifier: types.TypeToken,
},
Annotations: map[string]string{
types.SiteVersion: current.GetSiteMetadata().Version,
types.TokenTemplate: templateName,
},
},
Data: template.Data,
}
certs.AnnotateConnectionToken(secret, "inter-router", hostPorts.InterRouter.Host, hostPorts.InterRouter.Port)
certs.AnnotateConnectionToken(secret, "edge", hostPorts.Edge.Host, hostPorts.Edge.Port)
if siteId != "" {
secret.ObjectMeta.Annotations[types.TokenGeneratedBy] = siteId
}
if _, hasCert := template.Data["tls.crt"]; hasCert {
if _, hasKey := template.Data["tls.key"]; hasKey {
secret.Type = "kubernetes.io/tls"
}
}
return secret, hostPorts.LocalOnly, nil
}
func (cli *VanClient) ConnectorTokenCreate(ctx context.Context, subject string, namespace string) (*corev1.Secret, bool, error) {
if namespace == "" {
namespace = cli.Namespace
}
current, err := cli.getRouterConfig(ctx, namespace)
if err != nil {
return nil, false, err
}
if current.IsEdge() {
return nil, false, fmt.Errorf("Edge configuration cannot accept connections")
}
// TODO: creat const for ca
caSecret, err := cli.KubeClient.CoreV1().Secrets(namespace).Get(context.TODO(), types.SiteCaSecret, metav1.GetOptions{})
if err != nil {
return nil, false, err
}
// get the host and port for inter-router and edge
var hostPorts RouterHostPorts
if !configureHostPorts(&hostPorts, cli, namespace) {
// TODO: return the actual error
return nil, false, fmt.Errorf("Could not determine host/ports for token")
}
secret := certs.GenerateSecret(subject, subject, hostPorts.Hosts, caSecret)
certs.AnnotateConnectionToken(&secret, "inter-router", hostPorts.InterRouter.Host, hostPorts.InterRouter.Port)
certs.AnnotateConnectionToken(&secret, "edge", hostPorts.Edge.Host, hostPorts.Edge.Port)
secret.Annotations[types.SiteVersion] = current.GetSiteMetadata().Version
if secret.ObjectMeta.Labels == nil {
secret.ObjectMeta.Labels = map[string]string{}
}
secret.ObjectMeta.Labels[types.SkupperTypeQualifier] = types.TypeToken
// Store our siteID in the token, to prevent later self-connection.
siteConfig, err := cli.SiteConfigInspect(ctx, nil)
if err != nil {
return nil, false, err
}
if siteConfig != nil {
secret.ObjectMeta.Annotations[types.TokenGeneratedBy] = siteConfig.Reference.UID
}
return &secret, hostPorts.LocalOnly, nil
}
func (cli *VanClient) ConnectorTokenCreateFile(ctx context.Context, subject string, secretFile string) error {
policy := NewPolicyValidatorAPI(cli)
res, err := policy.IncomingLink()
if err != nil {
return err
}
if !res.Allowed {
return res.Err()
}
secret, localOnly, err := cli.ConnectorTokenCreate(ctx, subject, "")
if err == nil {
return certs.GenerateSecretFile(secretFile, secret, localOnly)
} else {
return err
}
}