feat(global): introduce user teams and new UAC system (#868)

api/http/handler/docker.go

@@ -0,0 +1,94 @@
+package handler
+
+import (
+	"strconv"
+
+	"github.com/portainer/portainer"
+	httperror "github.com/portainer/portainer/http/error"
+	"github.com/portainer/portainer/http/proxy"
+	"github.com/portainer/portainer/http/security"
+
+	"log"
+	"net/http"
+	"os"
+
+	"github.com/gorilla/mux"
+)
+
+// DockerHandler represents an HTTP API handler for proxying requests to the Docker API.
+type DockerHandler struct {
+	*mux.Router
+	Logger                *log.Logger
+	EndpointService       portainer.EndpointService
+	TeamMembershipService portainer.TeamMembershipService
+	ProxyManager          *proxy.Manager
+}
+
+// NewDockerHandler returns a new instance of DockerHandler.
+func NewDockerHandler(bouncer *security.RequestBouncer) *DockerHandler {
+	h := &DockerHandler{
+		Router: mux.NewRouter(),
+		Logger: log.New(os.Stderr, "", log.LstdFlags),
+	}
+	h.PathPrefix("/{id}/").Handler(
+		bouncer.AuthenticatedAccess(http.HandlerFunc(h.proxyRequestsToDockerAPI)))
+	return h
+}
+
+func (handler *DockerHandler) checkEndpointAccessControl(endpoint *portainer.Endpoint, userID portainer.UserID) bool {
+	for _, authorizedUserID := range endpoint.AuthorizedUsers {
+		if authorizedUserID == userID {
+			return true
+		}
+	}
+
+	memberships, _ := handler.TeamMembershipService.TeamMembershipsByUserID(userID)
+	for _, authorizedTeamID := range endpoint.AuthorizedTeams {
+		for _, membership := range memberships {
+			if membership.TeamID == authorizedTeamID {
+				return true
+			}
+		}
+	}
+	return false
+}
+
+func (handler *DockerHandler) proxyRequestsToDockerAPI(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	id := vars["id"]
+
+	parsedID, err := strconv.Atoi(id)
+	if err != nil {
+		httperror.WriteErrorResponse(w, err, http.StatusBadRequest, handler.Logger)
+		return
+	}
+
+	endpointID := portainer.EndpointID(parsedID)
+	endpoint, err := handler.EndpointService.Endpoint(endpointID)
+	if err != nil {
+		httperror.WriteErrorResponse(w, err, http.StatusInternalServerError, handler.Logger)
+		return
+	}
+
+	tokenData, err := security.RetrieveTokenData(r)
+	if err != nil {
+		httperror.WriteErrorResponse(w, err, http.StatusInternalServerError, handler.Logger)
+		return
+	}
+	if tokenData.Role != portainer.AdministratorRole && !handler.checkEndpointAccessControl(endpoint, tokenData.ID) {
+		httperror.WriteErrorResponse(w, portainer.ErrEndpointAccessDenied, http.StatusForbidden, handler.Logger)
+		return
+	}
+
+	var proxy http.Handler
+	proxy = handler.ProxyManager.GetProxy(string(endpointID))
+	if proxy == nil {
+		proxy, err = handler.ProxyManager.CreateAndRegisterProxy(endpoint)
+		if err != nil {
+			httperror.WriteErrorResponse(w, err, http.StatusBadRequest, handler.Logger)
+			return
+		}
+	}
+
+	http.StripPrefix("/"+id, proxy).ServeHTTP(w, r)
+}