|
| 1 | +package cli |
| 2 | + |
| 3 | +import ( |
| 4 | + "errors" |
| 5 | + "flag" |
| 6 | + "fmt" |
| 7 | + jacfarm_client "jacfarmcli/internal/clients/jacfarm" |
| 8 | + "jacfarmcli/internal/worker" |
| 9 | + "log/slog" |
| 10 | + "os" |
| 11 | + "time" |
| 12 | + |
| 13 | + "github.com/jacute/prettylogger" |
| 14 | +) |
| 15 | + |
| 16 | +var ( |
| 17 | + ErrUsage = errors.New("usage error") |
| 18 | +) |
| 19 | + |
| 20 | +type Args struct { |
| 21 | + Addr string |
| 22 | + FlagRe string |
| 23 | + Token string |
| 24 | + Port int |
| 25 | + ExecutablePath string |
| 26 | + Timeout int |
| 27 | + AttackPeriod int |
| 28 | + MaxConcurrentExploits int |
| 29 | +} |
| 30 | + |
| 31 | +func ParseArgs() (*Args, error) { |
| 32 | + var args Args |
| 33 | + |
| 34 | + flag.IntVar(&args.Timeout, "t", 5, "timeout for http client (in seconds)") |
| 35 | + flag.StringVar(&args.Token, "a", "", "JacFARM auth token") |
| 36 | + flag.IntVar(&args.AttackPeriod, "period", 5, "attack period (in seconds)") |
| 37 | + flag.IntVar(&args.MaxConcurrentExploits, "c", 50, "max concurrent exploits in one time") |
| 38 | + flag.IntVar(&args.Port, "p", 15050, "jacfarm port") |
| 39 | + flag.StringVar(&args.FlagRe, "f", "[A-Z0-9]{31}=", "flag regex") |
| 40 | + |
| 41 | + flag.Usage = func() { |
| 42 | + fmt.Fprintf(os.Stderr, "Usage:\n") |
| 43 | + fmt.Fprintf(os.Stderr, " %s [flags] <addr> <executable>\n\n", os.Args[0]) |
| 44 | + fmt.Fprintf(os.Stderr, "Example:\n") |
| 45 | + fmt.Fprintf(os.Stderr, " %s -a TOKEN -p 15050 localhost ./exploit\n\n", os.Args[0]) |
| 46 | + fmt.Fprintf(os.Stderr, "Flags:\n") |
| 47 | + flag.PrintDefaults() |
| 48 | + } |
| 49 | + flag.Parse() |
| 50 | + |
| 51 | + if args.Token == "" { |
| 52 | + return nil, flag.ErrHelp |
| 53 | + } |
| 54 | + |
| 55 | + rest := flag.Args() |
| 56 | + if len(rest) < 1 { |
| 57 | + return nil, flag.ErrHelp |
| 58 | + } |
| 59 | + |
| 60 | + args.Addr = rest[0] |
| 61 | + args.ExecutablePath = rest[1] |
| 62 | + |
| 63 | + return &args, nil |
| 64 | +} |
| 65 | + |
| 66 | +func ValidateArgs(args *Args) error { |
| 67 | + if _, err := os.Stat(args.ExecutablePath); os.IsNotExist(err) { |
| 68 | + return err |
| 69 | + } |
| 70 | + return nil |
| 71 | +} |
| 72 | + |
| 73 | +// Run starts the worker |
| 74 | +// Non-block function |
| 75 | +func Run(args *Args, log *slog.Logger) error { |
| 76 | + const op = "cli.Run" |
| 77 | + |
| 78 | + client, err := jacfarm_client.New( |
| 79 | + args.Addr, |
| 80 | + args.Token, |
| 81 | + jacfarm_client.WithCustomPort(args.Port), |
| 82 | + jacfarm_client.WithTimeout(time.Duration(args.Timeout)*time.Second), |
| 83 | + ) |
| 84 | + if err != nil { |
| 85 | + log.Error("error creating jacfarm client", prettylogger.Err(err)) |
| 86 | + return fmt.Errorf("%s: error creating jacfarm client %w", op, err) |
| 87 | + } |
| 88 | + w, err := worker.New( |
| 89 | + client, log, |
| 90 | + args.ExecutablePath, |
| 91 | + args.FlagRe, |
| 92 | + worker.WithAttackPeriod(time.Duration(args.AttackPeriod)*time.Second), |
| 93 | + worker.WithMaxConcurrentExploits(args.MaxConcurrentExploits), |
| 94 | + ) |
| 95 | + if err != nil { |
| 96 | + log.Error("error creating worker", prettylogger.Err(err)) |
| 97 | + return fmt.Errorf("%s: error creating worker %e", op, err) |
| 98 | + } |
| 99 | + |
| 100 | + w.Run() |
| 101 | + |
| 102 | + return nil |
| 103 | +} |
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