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list-management-group-descendants.go
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list-management-group-descendants.go
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// Copyright (C) 2022 Specter Ops, Inc.
//
// This file is part of AzureHound.
//
// AzureHound is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// AzureHound is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package cmd
import (
"context"
"fmt"
"os"
"os/signal"
"sync"
"time"
"github.com/bloodhoundad/azurehound/client"
"github.com/bloodhoundad/azurehound/enums"
"github.com/bloodhoundad/azurehound/models"
"github.com/bloodhoundad/azurehound/pipeline"
"github.com/spf13/cobra"
)
func init() {
listRootCmd.AddCommand(listManagementGroupDescendantsCmd)
}
var listManagementGroupDescendantsCmd = &cobra.Command{
Use: "management-group-descendants",
Long: "Lists Azure Management Group Descendants",
Run: listManagementGroupDescendantsCmdImpl,
SilenceUsage: true,
}
func listManagementGroupDescendantsCmdImpl(cmd *cobra.Command, args []string) {
ctx, stop := signal.NotifyContext(cmd.Context(), os.Interrupt, os.Kill)
defer gracefulShutdown(stop)
log.V(1).Info("testing connections")
if err := testConnections(); err != nil {
exit(err)
} else if azClient, err := newAzureClient(); err != nil {
exit(err)
} else {
log.Info("collecting azure management group descendants...")
start := time.Now()
stream := listManagementGroupDescendants(ctx, azClient, listManagementGroups(ctx, azClient))
outputStream(ctx, stream)
duration := time.Since(start)
log.Info("collection completed", "duration", duration.String())
}
}
func listManagementGroupDescendants(ctx context.Context, client client.AzureClient, managementGroups <-chan interface{}) <-chan interface{} {
var (
out = make(chan interface{})
ids = make(chan string)
streams = pipeline.Demux(ctx.Done(), ids, 25)
wg sync.WaitGroup
)
go func() {
defer close(ids)
for result := range pipeline.OrDone(ctx.Done(), managementGroups) {
if managementGroup, ok := result.(AzureWrapper).Data.(models.ManagementGroup); !ok {
log.Error(fmt.Errorf("failed type assertion"), "unable to continue enumerating management group descendants", "result", result)
return
} else {
ids <- managementGroup.Name
}
}
}()
wg.Add(len(streams))
for i := range streams {
stream := streams[i]
go func() {
defer wg.Done()
for id := range stream {
count := 0
for item := range client.ListAzureManagementGroupDescendants(ctx, id.(string)) {
if item.Error != nil {
log.Error(item.Error, "unable to continue processing descendants for this management group", "managementGroupId", id)
} else {
log.V(2).Info("found management group descendant", "type", item.Ok.Type, "id", item.Ok.Id, "parent", item.Ok.Properties.Parent.Id)
count++
out <- AzureWrapper{
Kind: enums.KindAZManagementGroupDescendant,
Data: item.Ok,
}
}
}
log.V(1).Info("finished listing management group descendants", "managementGroupId", id, "count", count)
}
}()
}
go func() {
wg.Wait()
close(out)
log.Info("finished listing all management group descendants")
}()
return out
}