dex/server/admin.go

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package server
import (
"encoding/json"
"net/http"
"path"
"github.com/coreos/pkg/health"
"github.com/julienschmidt/httprouter"
"github.com/coreos/dex/admin"
"github.com/coreos/dex/pkg/log"
"github.com/coreos/dex/schema/adminschema"
"github.com/coreos/go-oidc/key"
)
const (
AdminAPIVersion = "v1"
AdminAPISecretLength = 128
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)
var (
AdminGetEndpoint = addBasePath("/admin/:id")
AdminCreateEndpoint = addBasePath("/admin")
AdminGetStateEndpoint = addBasePath("/state")
)
// AdminServer serves the admin API.
type AdminServer struct {
adminAPI *admin.AdminAPI
checker health.Checker
secret string
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}
func NewAdminServer(adminAPI *admin.AdminAPI, rotator *key.PrivateKeyRotator, secret string) *AdminServer {
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return &AdminServer{
adminAPI: adminAPI,
checker: health.Checker{
Checks: []health.Checkable{
rotator,
},
},
secret: secret,
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}
}
func (s *AdminServer) HTTPHandler() http.Handler {
r := httprouter.New()
r.GET(AdminGetEndpoint, s.getAdmin)
r.POST(AdminCreateEndpoint, s.createAdmin)
r.GET(AdminGetStateEndpoint, s.getState)
r.Handler("GET", httpPathHealth, s.checker)
r.HandlerFunc("GET", httpPathDebugVars, health.ExpvarHandler)
return authorizer(r, s.secret, httpPathHealth, httpPathDebugVars)
}
func authorizer(h http.Handler, secret string, public ...string) http.Handler {
publicSet := map[string]struct{}{}
for _, p := range public {
publicSet[p] = struct{}{}
}
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
_, isPublicPath := publicSet[r.URL.Path]
if !isPublicPath && r.Header.Get("Authorization") != secret {
writeAPIError(w, http.StatusUnauthorized, newAPIError(errorAccessDenied, ""))
return
}
h.ServeHTTP(w, r)
})
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}
func (s *AdminServer) getAdmin(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
id := ps.ByName("id")
admn, err := s.adminAPI.GetAdmin(id)
if err != nil {
s.writeError(w, err)
return
}
writeResponseWithBody(w, http.StatusOK, admn)
}
func (s *AdminServer) createAdmin(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
admn := adminschema.Admin{}
err := json.NewDecoder(r.Body).Decode(&admn)
if err != nil {
writeInvalidRequest(w, "cannot parse JSON body")
return
}
id, err := s.adminAPI.CreateAdmin(admn)
if err != nil {
s.writeError(w, err)
return
}
admn.Id = id
w.Header().Set("Location", AdminCreateEndpoint+"/"+id)
writeResponseWithBody(w, http.StatusOK, admn)
}
func (s *AdminServer) getState(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
state, err := s.adminAPI.GetState()
if err != nil {
s.writeError(w, err)
return
}
writeResponseWithBody(w, http.StatusOK, state)
}
func (s *AdminServer) writeError(w http.ResponseWriter, err error) {
log.Errorf("Error calling admin API: %v: ", err)
if adminErr, ok := err.(admin.Error); ok {
writeAPIError(w, adminErr.Code, newAPIError(adminErr.Type, adminErr.Desc))
return
}
writeAPIError(w, http.StatusInternalServerError, newAPIError(errorServerError, err.Error()))
}
func writeInvalidRequest(w http.ResponseWriter, msg string) {
writeAPIError(w, http.StatusBadRequest, newAPIError(errorInvalidRequest, msg))
}
func addBasePath(s string) string {
return path.Join(httpPathAPI, APIVersion, s)
}