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121 lines
3.4 KiB
121 lines
3.4 KiB
package server
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import (
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"net/http"
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"path/filepath"
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"strconv"
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"github.com/gorilla/mux"
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"github.com/rancher/k3s/pkg/daemons/config"
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"github.com/rancher/k3s/pkg/openapi"
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"k8s.io/apimachinery/pkg/util/json"
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)
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const (
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jsonMediaType = "application/json"
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binaryMediaType = "application/octet-stream"
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pbMediaType = "application/com.github.proto-openapi.spec.v2@v1.0+protobuf"
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openapiPrefix = "openapi."
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staticURL = "/static/"
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)
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type CACertsGetter func() (string, error)
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func router(serverConfig *config.Control, tunnel http.Handler, cacertsGetter CACertsGetter) http.Handler {
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authed := mux.NewRouter()
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authed.Use(authMiddleware(serverConfig))
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authed.NotFoundHandler = serverConfig.Runtime.Handler
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authed.Path("/v1-k3s/connect").Handler(tunnel)
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authed.Path("/v1-k3s/node.crt").Handler(nodeCrt(serverConfig))
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authed.Path("/v1-k3s/node.key").Handler(nodeKey(serverConfig))
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authed.Path("/v1-k3s/config").Handler(configHandler(serverConfig))
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staticDir := filepath.Join(serverConfig.DataDir, "static")
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router := mux.NewRouter()
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router.NotFoundHandler = authed
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router.PathPrefix(staticURL).Handler(serveStatic(staticURL, staticDir))
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router.Path("/cacerts").Handler(cacerts(cacertsGetter))
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router.Path("/openapi/v2").Handler(serveOpenapi())
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router.Path("/ping").Handler(ping())
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return router
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}
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func cacerts(getter CACertsGetter) http.Handler {
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return http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) {
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content, err := getter()
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if err != nil {
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resp.WriteHeader(http.StatusInternalServerError)
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resp.Write([]byte(err.Error()))
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}
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resp.Header().Set("content-type", "text/plain")
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resp.Write([]byte(content))
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})
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}
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func nodeCrt(server *config.Control) http.Handler {
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return http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) {
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if req.TLS == nil {
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resp.WriteHeader(http.StatusNotFound)
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return
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}
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http.ServeFile(resp, req, server.Runtime.NodeCert)
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})
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}
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func nodeKey(server *config.Control) http.Handler {
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return http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) {
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if req.TLS == nil {
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resp.WriteHeader(http.StatusNotFound)
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return
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}
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http.ServeFile(resp, req, server.Runtime.NodeKey)
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})
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}
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func configHandler(server *config.Control) http.Handler {
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return http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) {
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if req.TLS == nil {
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resp.WriteHeader(http.StatusNotFound)
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return
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}
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resp.Header().Set("content-type", "application/json")
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json.NewEncoder(resp).Encode(server)
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})
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}
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func serveOpenapi() http.Handler {
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return http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) {
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suffix := "json"
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contentType := jsonMediaType
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if req.Header.Get("Accept") == pbMediaType {
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suffix = "pb"
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contentType = binaryMediaType
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}
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data, err := openapi.Asset(openapiPrefix + suffix)
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if err != nil {
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resp.WriteHeader(http.StatusInternalServerError)
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resp.Write([]byte(err.Error()))
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return
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}
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resp.Header().Set("Content-Type", contentType)
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resp.Header().Set("Content-Length", strconv.Itoa(len(data)))
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resp.Write(data)
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})
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}
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func ping() http.Handler {
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return http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) {
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data := []byte("pong")
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resp.Header().Set("Content-Type", "text/plain")
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resp.Header().Set("Content-Length", strconv.Itoa(len(data)))
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resp.Write(data)
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})
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}
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func serveStatic(urlPrefix, staticDir string) http.Handler {
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return http.StripPrefix(urlPrefix, http.FileServer(http.Dir(staticDir)))
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}
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