mirror of https://github.com/portainer/portainer
118 lines
4.5 KiB
Go
118 lines
4.5 KiB
Go
package websocket
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import (
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"io"
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"log"
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"net/http"
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"strings"
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"github.com/gorilla/websocket"
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httperror "github.com/portainer/libhttp/error"
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"github.com/portainer/libhttp/request"
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portainer "github.com/portainer/portainer/api"
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bolterrors "github.com/portainer/portainer/api/bolt/errors"
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)
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// websocketPodExec handles GET requests on /websocket/pod?token=<token>&endpointId=<endpointID>&namespace=<namespace>&podName=<podName>&containerName=<containerName>&command=<command>
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// The request will be upgraded to the websocket protocol.
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// Authentication and access is controlled via the mandatory token query parameter.
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// The following parameters query parameters are mandatory:
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// * token: JWT token used for authentication against this endpoint
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// * endpointId: endpoint ID of the endpoint where the resource is located
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// * namespace: namespace where the container is located
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// * podName: name of the pod containing the container
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// * containerName: name of the container
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// * command: command to execute in the container
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func (handler *Handler) websocketPodExec(w http.ResponseWriter, r *http.Request) *httperror.HandlerError {
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endpointID, err := request.RetrieveNumericQueryParameter(r, "endpointId", false)
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if err != nil {
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return &httperror.HandlerError{http.StatusBadRequest, "Invalid query parameter: endpointId", err}
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}
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namespace, err := request.RetrieveQueryParameter(r, "namespace", false)
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if err != nil {
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return &httperror.HandlerError{http.StatusBadRequest, "Invalid query parameter: namespace", err}
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}
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podName, err := request.RetrieveQueryParameter(r, "podName", false)
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if err != nil {
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return &httperror.HandlerError{http.StatusBadRequest, "Invalid query parameter: podName", err}
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}
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containerName, err := request.RetrieveQueryParameter(r, "containerName", false)
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if err != nil {
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return &httperror.HandlerError{http.StatusBadRequest, "Invalid query parameter: containerName", err}
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}
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command, err := request.RetrieveQueryParameter(r, "command", false)
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if err != nil {
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return &httperror.HandlerError{http.StatusBadRequest, "Invalid query parameter: command", err}
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}
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endpoint, err := handler.DataStore.Endpoint().Endpoint(portainer.EndpointID(endpointID))
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if err == bolterrors.ErrObjectNotFound {
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return &httperror.HandlerError{http.StatusNotFound, "Unable to find the endpoint associated to the stack inside the database", err}
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} else if err != nil {
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return &httperror.HandlerError{http.StatusInternalServerError, "Unable to find the endpoint associated to the stack inside the database", err}
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}
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err = handler.requestBouncer.AuthorizedEndpointOperation(r, endpoint)
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if err != nil {
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return &httperror.HandlerError{http.StatusForbidden, "Permission denied to access endpoint", err}
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}
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params := &webSocketRequestParams{
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endpoint: endpoint,
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}
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r.Header.Del("Origin")
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if endpoint.Type == portainer.AgentOnKubernetesEnvironment {
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err := handler.proxyAgentWebsocketRequest(w, r, params)
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if err != nil {
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return &httperror.HandlerError{http.StatusInternalServerError, "Unable to proxy websocket request to agent", err}
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}
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return nil
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} else if endpoint.Type == portainer.EdgeAgentOnKubernetesEnvironment {
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err := handler.proxyEdgeAgentWebsocketRequest(w, r, params)
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if err != nil {
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return &httperror.HandlerError{http.StatusInternalServerError, "Unable to proxy websocket request to Edge agent", err}
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}
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return nil
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}
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commandArray := strings.Split(command, " ")
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websocketConn, err := handler.connectionUpgrader.Upgrade(w, r, nil)
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if err != nil {
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return &httperror.HandlerError{http.StatusInternalServerError, "Unable to upgrade the connection", err}
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}
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defer websocketConn.Close()
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stdinReader, stdinWriter := io.Pipe()
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defer stdinWriter.Close()
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stdoutReader, stdoutWriter := io.Pipe()
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defer stdoutWriter.Close()
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errorChan := make(chan error, 1)
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go streamFromWebsocketToWriter(websocketConn, stdinWriter, errorChan)
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go streamFromReaderToWebsocket(websocketConn, stdoutReader, errorChan)
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cli, err := handler.KubernetesClientFactory.GetKubeClient(endpoint)
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if err != nil {
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return &httperror.HandlerError{http.StatusInternalServerError, "Unable to create Kubernetes client", err}
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}
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err = cli.StartExecProcess(namespace, podName, containerName, commandArray, stdinReader, stdoutWriter)
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if err != nil {
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return &httperror.HandlerError{http.StatusInternalServerError, "Unable to start exec process inside container", err}
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}
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err = <-errorChan
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if websocket.IsUnexpectedCloseError(err, websocket.CloseGoingAway, websocket.CloseNoStatusReceived) {
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log.Printf("websocket error: %s \n", err.Error())
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}
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return nil
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}
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