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re-add legacy style fragmentaion

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xvzc 2024-07-23 09:41:13 +09:00
parent f50beaa3fe
commit 23f160d37b
2 changed files with 37 additions and 22 deletions
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36
proxy/https.go
View File

@ -89,22 +89,34 @@ func (pxy *Proxy) splitInChunks(bytes []byte, size int) [][]byte {
var chunks [][]byte
var raw []byte = bytes
for {
if len(raw) == 0 {
break
if pxy.windowSize > 0 {
log.Debug("[HTTPS] Chunking client hello.")
for {
if len(raw) == 0 {
break
}
// necessary check to avoid slicing beyond
// slice capacity
if len(raw) < size {
size = len(raw)
}
chunks = append(chunks, raw[0:size])
raw = raw[size:]
}
// necessary check to avoid slicing beyond
// slice capacity
if len(raw) < size {
size = len(raw)
}
chunks = append(chunks, raw[0:size])
raw = raw[size:]
return chunks
}
return chunks
if len(raw) < 1 {
return [][]byte{raw}
}
log.Debug("[HTTPS] Using legacy fragmentation.")
return [][]byte{raw[:1], raw[1:]}
}
func (pxy *Proxy) patternExists() bool {

23
util/config.go
View File

@ -47,23 +47,26 @@ func GetConfig() *Config {
func ParseArgs() {
config = &Config{}
config.Addr = flag.String("addr", "127.0.0.1", "Listen addr")
config.Addr = flag.String("addr", "127.0.0.1", "listen address")
config.Port = flag.Int("port", 8080, "port")
config.DnsAddr = flag.String("dns-addr", "8.8.8.8", "DNS addr")
config.DnsPort = flag.Int("dns-port", 53, "DNS port")
config.EnableDoh = flag.Bool("enable-doh", false, "Enable DOH")
config.Debug = flag.Bool("debug", false, "Enable debug output")
config.NoBanner = flag.Bool("no-banner", false, "Disable banner")
config.DnsAddr = flag.String("dns-addr", "8.8.8.8", "dns address")
config.DnsPort = flag.Int("dns-port", 53, "port number for dns")
config.EnableDoh = flag.Bool("enable-doh", false, "enable 'dns over https'")
config.Debug = flag.Bool("debug", false, "enable debug output")
config.NoBanner = flag.Bool("no-banner", false, "disable banner")
config.Timeout = flag.Int("timeout", 2000, "timeout in milliseconds")
config.WindowSize = flag.Int("window-size", 50, "window-size for fragmented client hello")
config.Version = flag.Bool("v", false, "print version")
config.WindowSize = flag.Int("window-size", 50, `chunk size, in number of bytes, for fragmented client hello,
try lower values if the default value doesn't bypass the DPI;
set to 0 to use old (pre v0.10.0) client hello splitting method:
fragmentation for the first data packet and the rest`)
flag.Var(&allowedHosts, "url", "Bypass DPI only on this url, can be passed multiple times")
allowedPattern = flag.String(
"pattern",
"",
"Bypass DPI only on packets matching this regex pattern",
"bypass DPI only on packets matching this regex pattern",
)
config.Version = flag.Bool("v", false, "print spoof-dpi's version. this may contain some other relevant information")
flag.Parse()