534328ca30
* decouple bouncer dependencies: use go-cs-lib/pkg/trace * decouple bouncer dependencies: use go-cs-lib/pkg/version * decouple bouncer dependencies: use go-cs-lib/pkg/yamlpatch * decouple bouncer dependencies: use go-cs-lib/pkg/csstring * unused import
356 lines
11 KiB
Go
356 lines
11 KiB
Go
package main
|
|
|
|
import (
|
|
"context"
|
|
"encoding/csv"
|
|
"encoding/json"
|
|
"fmt"
|
|
"io/fs"
|
|
"net/url"
|
|
"os"
|
|
"path/filepath"
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/fatih/color"
|
|
"github.com/go-openapi/strfmt"
|
|
"github.com/pkg/errors"
|
|
log "github.com/sirupsen/logrus"
|
|
"github.com/spf13/cobra"
|
|
"gopkg.in/tomb.v2"
|
|
|
|
"github.com/crowdsecurity/go-cs-lib/pkg/version"
|
|
|
|
"github.com/crowdsecurity/crowdsec/pkg/apiclient"
|
|
"github.com/crowdsecurity/crowdsec/pkg/csconfig"
|
|
"github.com/crowdsecurity/crowdsec/pkg/csplugin"
|
|
"github.com/crowdsecurity/crowdsec/pkg/csprofiles"
|
|
)
|
|
|
|
|
|
type NotificationsCfg struct {
|
|
Config csplugin.PluginConfig `json:"plugin_config"`
|
|
Profiles []*csconfig.ProfileCfg `json:"associated_profiles"`
|
|
ids []uint
|
|
}
|
|
|
|
|
|
func NewNotificationsCmd() *cobra.Command {
|
|
var cmdNotifications = &cobra.Command{
|
|
Use: "notifications [action]",
|
|
Short: "Helper for notification plugin configuration",
|
|
Long: "To list/inspect/test notification template",
|
|
Args: cobra.MinimumNArgs(1),
|
|
Aliases: []string{"notifications", "notification"},
|
|
DisableAutoGenTag: true,
|
|
PersistentPreRun: func(cmd *cobra.Command, args []string) {
|
|
var (
|
|
err error
|
|
)
|
|
if err = csConfig.API.Server.LoadProfiles(); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
if csConfig.ConfigPaths.NotificationDir == "" {
|
|
log.Fatalf("config_paths.notification_dir is not set in crowdsec config")
|
|
}
|
|
},
|
|
}
|
|
|
|
|
|
cmdNotifications.AddCommand(NewNotificationsListCmd())
|
|
cmdNotifications.AddCommand(NewNotificationsInspectCmd())
|
|
cmdNotifications.AddCommand(NewNotificationsReinjectCmd())
|
|
|
|
return cmdNotifications
|
|
}
|
|
|
|
|
|
func getNotificationsConfiguration() (map[string]NotificationsCfg, error) {
|
|
pcfgs := map[string]csplugin.PluginConfig{}
|
|
wf := func(path string, info fs.FileInfo, err error) error {
|
|
if info == nil {
|
|
return errors.Wrapf(err, "error while traversing directory %s", path)
|
|
}
|
|
name := filepath.Join(csConfig.ConfigPaths.NotificationDir, info.Name()) //Avoid calling info.Name() twice
|
|
if (strings.HasSuffix(name, "yaml") || strings.HasSuffix(name, "yml")) && !(info.IsDir()) {
|
|
ts, err := csplugin.ParsePluginConfigFile(name)
|
|
if err != nil {
|
|
return errors.Wrapf(err, "Loading notifification plugin configuration with %s", name)
|
|
}
|
|
for _, t := range ts {
|
|
pcfgs[t.Name] = t
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
if err := filepath.Walk(csConfig.ConfigPaths.NotificationDir, wf); err != nil {
|
|
return nil, errors.Wrap(err, "Loading notifification plugin configuration")
|
|
}
|
|
|
|
// A bit of a tricky stuf now: reconcile profiles and notification plugins
|
|
ncfgs := map[string]NotificationsCfg{}
|
|
profiles, err := csprofiles.NewProfile(csConfig.API.Server.Profiles)
|
|
if err != nil {
|
|
return nil, errors.Wrap(err, "Cannot extract profiles from configuration")
|
|
}
|
|
for profileID, profile := range profiles {
|
|
loop:
|
|
for _, notif := range profile.Cfg.Notifications {
|
|
for name, pc := range pcfgs {
|
|
if notif == name {
|
|
if _, ok := ncfgs[pc.Name]; !ok {
|
|
ncfgs[pc.Name] = NotificationsCfg{
|
|
Config: pc,
|
|
Profiles: []*csconfig.ProfileCfg{profile.Cfg},
|
|
ids: []uint{uint(profileID)},
|
|
}
|
|
continue loop
|
|
}
|
|
tmp := ncfgs[pc.Name]
|
|
for _, pr := range tmp.Profiles {
|
|
var profiles []*csconfig.ProfileCfg
|
|
if pr.Name == profile.Cfg.Name {
|
|
continue
|
|
}
|
|
profiles = append(tmp.Profiles, profile.Cfg)
|
|
ids := append(tmp.ids, uint(profileID))
|
|
ncfgs[pc.Name] = NotificationsCfg{
|
|
Config: tmp.Config,
|
|
Profiles: profiles,
|
|
ids: ids,
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return ncfgs, nil
|
|
}
|
|
|
|
|
|
func NewNotificationsListCmd() *cobra.Command {
|
|
var cmdNotificationsList = &cobra.Command{
|
|
Use: "list",
|
|
Short: "List active notifications plugins",
|
|
Long: `List active notifications plugins`,
|
|
Example: `cscli notifications list`,
|
|
Args: cobra.ExactArgs(0),
|
|
DisableAutoGenTag: true,
|
|
RunE: func(cmd *cobra.Command, arg []string) error {
|
|
ncfgs, err := getNotificationsConfiguration()
|
|
if err != nil {
|
|
return errors.Wrap(err, "Can't build profiles configuration")
|
|
}
|
|
|
|
if csConfig.Cscli.Output == "human" {
|
|
notificationListTable(color.Output, ncfgs)
|
|
} else if csConfig.Cscli.Output == "json" {
|
|
x, err := json.MarshalIndent(ncfgs, "", " ")
|
|
if err != nil {
|
|
return errors.New("failed to marshal notification configuration")
|
|
}
|
|
fmt.Printf("%s", string(x))
|
|
} else if csConfig.Cscli.Output == "raw" {
|
|
csvwriter := csv.NewWriter(os.Stdout)
|
|
err := csvwriter.Write([]string{"Name", "Type", "Profile name"})
|
|
if err != nil {
|
|
return errors.Wrap(err, "failed to write raw header")
|
|
}
|
|
for _, b := range ncfgs {
|
|
profilesList := []string{}
|
|
for _, p := range b.Profiles {
|
|
profilesList = append(profilesList, p.Name)
|
|
}
|
|
err := csvwriter.Write([]string{b.Config.Name, b.Config.Type, strings.Join(profilesList, ", ")})
|
|
if err != nil {
|
|
return errors.Wrap(err, "failed to write raw content")
|
|
}
|
|
}
|
|
csvwriter.Flush()
|
|
}
|
|
return nil
|
|
},
|
|
}
|
|
|
|
return cmdNotificationsList
|
|
}
|
|
|
|
|
|
func NewNotificationsInspectCmd() *cobra.Command {
|
|
var cmdNotificationsInspect = &cobra.Command{
|
|
Use: "inspect",
|
|
Short: "Inspect active notifications plugin configuration",
|
|
Long: `Inspect active notifications plugin and show configuration`,
|
|
Example: `cscli notifications inspect <plugin_name>`,
|
|
Args: cobra.ExactArgs(1),
|
|
DisableAutoGenTag: true,
|
|
RunE: func(cmd *cobra.Command, arg []string) error {
|
|
var (
|
|
cfg NotificationsCfg
|
|
ok bool
|
|
)
|
|
|
|
pluginName := arg[0]
|
|
|
|
if pluginName == "" {
|
|
errors.New("Please provide a plugin name to inspect")
|
|
}
|
|
ncfgs, err := getNotificationsConfiguration()
|
|
if err != nil {
|
|
return errors.Wrap(err, "Can't build profiles configuration")
|
|
}
|
|
if cfg, ok = ncfgs[pluginName]; !ok {
|
|
return errors.New("The provided plugin name doesn't exist or isn't active")
|
|
}
|
|
|
|
if csConfig.Cscli.Output == "human" || csConfig.Cscli.Output == "raw" {
|
|
fmt.Printf(" - %15s: %15s\n", "Type", cfg.Config.Type)
|
|
fmt.Printf(" - %15s: %15s\n", "Name", cfg.Config.Name)
|
|
fmt.Printf(" - %15s: %15s\n", "Timeout", cfg.Config.TimeOut)
|
|
fmt.Printf(" - %15s: %15s\n", "Format", cfg.Config.Format)
|
|
for k, v := range cfg.Config.Config {
|
|
fmt.Printf(" - %15s: %15v\n", k, v)
|
|
}
|
|
} else if csConfig.Cscli.Output == "json" {
|
|
x, err := json.MarshalIndent(cfg, "", " ")
|
|
if err != nil {
|
|
return errors.New("failed to marshal notification configuration")
|
|
}
|
|
fmt.Printf("%s", string(x))
|
|
}
|
|
return nil
|
|
},
|
|
}
|
|
|
|
return cmdNotificationsInspect
|
|
}
|
|
|
|
|
|
func NewNotificationsReinjectCmd() *cobra.Command {
|
|
var remediation bool
|
|
var alertOverride string
|
|
|
|
var cmdNotificationsReinject = &cobra.Command{
|
|
Use: "reinject",
|
|
Short: "reinject alert into notifications system",
|
|
Long: `Reinject alert into notifications system`,
|
|
Example: `
|
|
cscli notifications reinject <alert_id>
|
|
cscli notifications reinject <alert_id> --remediation
|
|
cscli notifications reinject <alert_id> -a '{"remediation": true,"scenario":"notification/test"}'
|
|
`,
|
|
Args: cobra.ExactArgs(1),
|
|
DisableAutoGenTag: true,
|
|
RunE: func(cmd *cobra.Command, args []string) error {
|
|
var (
|
|
pluginBroker csplugin.PluginBroker
|
|
pluginTomb tomb.Tomb
|
|
)
|
|
if len(args) != 1 {
|
|
printHelp(cmd)
|
|
return errors.New("Wrong number of argument: there should be one argument")
|
|
}
|
|
|
|
//first: get the alert
|
|
id, err := strconv.Atoi(args[0])
|
|
if err != nil {
|
|
return errors.New(fmt.Sprintf("bad alert id %s", args[0]))
|
|
}
|
|
if err := csConfig.LoadAPIClient(); err != nil {
|
|
return errors.Wrapf(err, "loading api client")
|
|
}
|
|
if csConfig.API.Client == nil {
|
|
return errors.New("There is no configuration on 'api_client:'")
|
|
}
|
|
if csConfig.API.Client.Credentials == nil {
|
|
return errors.New(fmt.Sprintf("Please provide credentials for the API in '%s'", csConfig.API.Client.CredentialsFilePath))
|
|
}
|
|
apiURL, err := url.Parse(csConfig.API.Client.Credentials.URL)
|
|
if err != nil {
|
|
return errors.Wrapf(err, "error parsing the URL of the API")
|
|
}
|
|
client, err := apiclient.NewClient(&apiclient.Config{
|
|
MachineID: csConfig.API.Client.Credentials.Login,
|
|
Password: strfmt.Password(csConfig.API.Client.Credentials.Password),
|
|
UserAgent: fmt.Sprintf("crowdsec/%s", version.String()),
|
|
URL: apiURL,
|
|
VersionPrefix: "v1",
|
|
})
|
|
if err != nil {
|
|
return errors.Wrapf(err, "error creating the client for the API")
|
|
}
|
|
alert, _, err := client.Alerts.GetByID(context.Background(), id)
|
|
if err != nil {
|
|
return errors.Wrapf(err, fmt.Sprintf("can't find alert with id %s", args[0]))
|
|
}
|
|
|
|
if alertOverride != "" {
|
|
if err = json.Unmarshal([]byte(alertOverride), alert); err != nil {
|
|
return errors.Wrapf(err, "Can't unmarshal the data given in the alert flag")
|
|
}
|
|
}
|
|
if !remediation {
|
|
alert.Remediation = true
|
|
}
|
|
|
|
// second we start plugins
|
|
err = pluginBroker.Init(csConfig.PluginConfig, csConfig.API.Server.Profiles, csConfig.ConfigPaths)
|
|
if err != nil {
|
|
return errors.Wrapf(err, "Can't initialize plugins")
|
|
}
|
|
|
|
pluginTomb.Go(func() error {
|
|
pluginBroker.Run(&pluginTomb)
|
|
return nil
|
|
})
|
|
|
|
//third: get the profile(s), and process the whole stuff
|
|
|
|
profiles, err := csprofiles.NewProfile(csConfig.API.Server.Profiles)
|
|
if err != nil {
|
|
return errors.Wrap(err, "Cannot extract profiles from configuration")
|
|
}
|
|
|
|
for id, profile := range profiles {
|
|
_, matched, err := profile.EvaluateProfile(alert)
|
|
if err != nil {
|
|
return errors.Wrapf(err, "can't evaluate profile %s", profile.Cfg.Name)
|
|
}
|
|
if !matched {
|
|
log.Infof("The profile %s didn't match", profile.Cfg.Name)
|
|
continue
|
|
}
|
|
log.Infof("The profile %s matched, sending to its configured notification plugins", profile.Cfg.Name)
|
|
loop:
|
|
for {
|
|
select {
|
|
case pluginBroker.PluginChannel <- csplugin.ProfileAlert{
|
|
ProfileID: uint(id),
|
|
Alert: alert,
|
|
}:
|
|
break loop
|
|
default:
|
|
time.Sleep(50 * time.Millisecond)
|
|
log.Info("sleeping\n")
|
|
|
|
}
|
|
}
|
|
if profile.Cfg.OnSuccess == "break" {
|
|
log.Infof("The profile %s contains a 'on_success: break' so bailing out", profile.Cfg.Name)
|
|
break
|
|
}
|
|
}
|
|
|
|
// time.Sleep(2 * time.Second) // There's no mechanism to ensure notification has been sent
|
|
pluginTomb.Kill(errors.New("terminating"))
|
|
pluginTomb.Wait()
|
|
return nil
|
|
},
|
|
}
|
|
cmdNotificationsReinject.Flags().BoolVarP(&remediation, "remediation", "r", false, "Set Alert.Remediation to false in the reinjected alert (see your profile filter configuration)")
|
|
cmdNotificationsReinject.Flags().StringVarP(&alertOverride, "alert", "a", "", "JSON string used to override alert fields in the reinjected alert (see crowdsec/pkg/models/alert.go in the source tree for the full definition of the object)")
|
|
|
|
return cmdNotificationsReinject
|
|
}
|