SpoofDPI/util/args.go

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package util
import (
"flag"
"fmt"
"regexp"
)
type Args struct {
Addr *string
Port *int
DnsAddr *string
DnsPort *int
EnableDoh *bool
Debug *bool
NoBanner *bool
SystemProxy *bool
Timeout *int
AllowedPattern []*regexp.Regexp
WindowSize *int
Version *bool
}
type StringArray []string
func (arr *StringArray) String() string {
return fmt.Sprintf("%s", *arr)
}
func (arr *StringArray) Set(value string) error {
*arr = append(*arr, value)
return nil
}
func ParseArgs() *Args {
args := new(Args)
args.Addr = flag.String("addr", "127.0.0.1", "listen address")
args.Port = flag.Int("port", 8080, "port")
args.DnsAddr = flag.String("dns-addr", "8.8.8.8", "dns address")
args.DnsPort = flag.Int("dns-port", 53, "port number for dns")
args.EnableDoh = flag.Bool("enable-doh", false, "enable 'dns-over-https'")
args.Debug = flag.Bool("debug", false, "enable debug output")
args.NoBanner = flag.Bool("no-banner", false, "disable banner")
args.SystemProxy = flag.Bool("system-proxy", true, "enable system-wide proxy")
args.Timeout = flag.Int("timeout", 0, "timeout in milliseconds; no timeout when not given")
args.WindowSize = flag.Int("window-size", 0, `chunk size, in number of bytes, for fragmented client hello,
try lower values if the default value doesn't bypass the DPI;
when not given, the client hello packet will be sent in two parts:
fragmentation for the first data packet and the rest
`)
args.Version = flag.Bool("v", false, "print spoof-dpi's version; this may contain some other relevant information")
var allowedPattern StringArray
flag.Var(
&allowedPattern,
"pattern",
"bypass DPI only on packets matching this regex pattern; can be given multiple times",
)
flag.Parse()
for _, pattern := range allowedPattern {
args.AllowedPattern = append(args.AllowedPattern, regexp.MustCompile(pattern))
}
return args
}