magellan/cmd/scan.go
2024-05-10 14:54:34 -06:00

109 lines
3.1 KiB
Go

package cmd
import (
"encoding/json"
"fmt"
"net"
"os"
"path"
"strings"
magellan "github.com/OpenCHAMI/magellan/internal"
"github.com/OpenCHAMI/magellan/internal/db/sqlite"
"github.com/cznic/mathutil"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
var (
begin uint8
end uint8
subnets []string
subnetMasks []net.IP
disableProbing bool
)
var scanCmd = &cobra.Command{
Use: "scan",
Short: "Scan for BMC nodes on a network",
Run: func(cmd *cobra.Command, args []string) {
var (
hostsToScan []string
portsToScan []int
)
// start by adding `--host` supplied to scan
if len(hosts) > 0 {
hostsToScan = hosts
}
// add hosts from `--subnets` and `--subnet-mask`
for i, subnet := range subnets {
// subnet string is empty so nothing to do here
if subnet == "" {
continue
}
// NOTE: should we check if subnet is valid here or is it done elsewhere (maybe in GenerateHosts)?
// no subnet masks supplied so add a default one for class C private networks
if len(subnetMasks) < i+1 {
subnetMasks = append(subnetMasks, net.IP{255, 255, 255, 0})
}
// generate a slice of all hosts to scan from subnets
hostsToScan = append(hostsToScan, magellan.GenerateHosts(subnet, &subnetMasks[i])...)
}
// add ports to use for scanning
if len(ports) > 0 {
portsToScan = ports
} else {
// no ports supplied so only use defaults
portsToScan = magellan.GetDefaultPorts()
}
// scan and store scanned data in cache
if concurrency <= 0 {
concurrency = mathutil.Clamp(len(hostsToScan), 1, 255)
}
probeStates := magellan.ScanForAssets(hostsToScan, portsToScan, concurrency, timeout, disableProbing, verbose)
if verbose {
format = strings.ToLower(format)
if format == "json" {
b, _ := json.Marshal(probeStates)
fmt.Printf("%s\n", string(b))
} else {
for _, r := range probeStates {
fmt.Printf("%s:%d (%s)\n", r.Host, r.Port, r.Protocol)
}
}
}
// make the dbpath dir if needed
err := os.MkdirAll(path.Dir(cachePath), 0766)
if err != nil {
fmt.Printf("failed tomake database directory: %v", err)
}
sqlite.InsertProbeResults(cachePath, &probeStates)
},
}
func init() {
scanCmd.Flags().StringSliceVar(&hosts, "host", []string{}, "set additional hosts to scan")
scanCmd.Flags().IntSliceVar(&ports, "port", []int{}, "set the ports to scan")
scanCmd.Flags().StringVar(&format, "format", "", "set the output format")
scanCmd.Flags().StringSliceVar(&subnets, "subnet", []string{}, "set additional subnets")
scanCmd.Flags().IPSliceVar(&subnetMasks, "subnet-mask", []net.IP{}, "set the subnet masks to use for network (must match number of subnets)")
scanCmd.Flags().BoolVar(&disableProbing, "disable-probing", false, "disable probing scanned results for BMC nodes")
viper.BindPFlag("scan.hosts", scanCmd.Flags().Lookup("host"))
viper.BindPFlag("scan.ports", scanCmd.Flags().Lookup("port"))
viper.BindPFlag("scan.subnets", scanCmd.Flags().Lookup("subnet"))
viper.BindPFlag("scan.subnet-masks", scanCmd.Flags().Lookup("subnet-mask"))
viper.BindPFlag("scan.disable-probing", scanCmd.Flags().Lookup("disable-probing"))
rootCmd.AddCommand(scanCmd)
}