forked from bearded-web/bearded
/
server.go
169 lines (150 loc) · 3.98 KB
/
server.go
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package agent
import (
"fmt"
"io/ioutil"
"time"
"github.com/Sirupsen/logrus"
"golang.org/x/net/context"
"github.com/bearded-web/bearded/models/plan"
"github.com/bearded-web/bearded/models/report"
"github.com/bearded-web/bearded/models/scan"
"github.com/bearded-web/bearded/pkg/agent/api"
"github.com/bearded-web/bearded/pkg/client"
"github.com/bearded-web/bearded/pkg/transport"
)
type RemoteServer struct {
transp transport.Transport
Rep *report.Report
sess *scan.Session
api *client.Client
}
// Server connects agent with plugin script
func NewRemoteServer(transp transport.Transport, api *client.Client, sess *scan.Session) (*RemoteServer, error) {
server := &RemoteServer{
transp: transp,
sess: sess,
api: api,
}
return server, nil
}
func (s *RemoteServer) Handle(ctx context.Context, msg transport.Extractor) (interface{}, error) {
req := api.RequestV1{}
resp := api.ResponseV1{}
err := msg.Extract(&req)
if err != nil {
return nil, err
}
switch req.Method {
case api.GetConfig:
if data, err := s.GetConfig(ctx); err != nil {
return nil, err
} else {
resp.GetConfig = data
}
case api.GetPluginVersions:
if data, err := s.GetPluginVersions(ctx, req.GetPluginVersions); err != nil {
return nil, err
} else {
resp.GetPluginVersions = data
}
case api.RunPlugin:
if data, err := s.RunPlugin(ctx, req.RunPlugin); err != nil {
return nil, err
} else {
resp.RunPlugin = data
}
case api.SendReport:
if err := s.SendReport(ctx, req.SendReport); err != nil {
return nil, err
}
case api.DownloadFile:
if data, err := s.DownloadFile(ctx, req.DownloadFile); err != nil {
return nil, err
} else {
resp.DownloadFile = data
}
default:
return nil, fmt.Errorf("Unknown method requested %s", req.Method)
}
return resp, nil
}
func (s *RemoteServer) Connect(ctx context.Context) error {
req := api.RequestV1{Method: api.Connect}
resp := api.ResponseV1{}
return s.transp.Request(ctx, req, &resp)
}
// apiV1 methods
func (s *RemoteServer) GetPluginVersions(ctx context.Context, name string) ([]string, error) {
// TODO (m0sth8): add sort by -version and increase limit
plugins, err := s.api.Plugins.List(ctx, &client.PluginsListOpts{Name: name})
if err != nil {
return nil, err
}
versions := []string{}
for _, pl := range plugins.Results {
versions = append(versions, pl.Version)
}
return versions, nil
}
func (s *RemoteServer) GetConfig(ctx context.Context) (*plan.Conf, error) {
return s.sess.Step.Conf, nil
}
func (s *RemoteServer) RunPlugin(ctx context.Context, step *plan.WorkflowStep) (*report.Report, error) {
// create session inside current session
child := &scan.Session{
Scan: s.sess.Scan,
Parent: s.sess.Id,
Step: step,
}
sess, err := s.api.Scans.SessionAddChild(ctx, child)
if err != nil {
return nil, err
}
// wait for session status finished
loop:
for {
select {
case <-ctx.Done():
return nil, ctx.Err()
default:
}
sess2, err := s.api.Scans.SessionGet(ctx, client.FromId(sess.Scan), client.FromId(sess.Id))
if err != nil {
if client.IsNotFound(err) {
// why session is not found???
return nil, err
}
logrus.Error(err)
// TODO (m0sth8): add errors counter and fail if counter is more then maximum
// TODO (m0sth8): add exponential sleep on errors
time.Sleep(time.Second * 15)
continue loop
}
switch sess2.Status {
case scan.StatusFinished:
break loop
case scan.StatusFailed:
return nil, fmt.Errorf("session was failed")
case scan.StatusPaused:
time.Sleep(time.Second * 30)
continue loop
}
time.Sleep(time.Second * 2)
}
rep, err := s.api.Scans.SessionReportGet(ctx, sess)
if err != nil {
return nil, err
}
return rep, nil
}
func (s *RemoteServer) SendReport(ctx context.Context, rep *report.Report) error {
s.Rep = rep
return nil
}
func (s *RemoteServer) DownloadFile(ctx context.Context, fileId string) ([]byte, error) {
buf, err := s.api.Files.Download(ctx, fileId)
if err != nil {
return nil, err
}
return ioutil.ReadAll(buf)
}