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Add raw DTLS fingerprints

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theodorsm 2024-12-19 00:33:48 +01:00
parent fd9f08d986
commit 0976198523
6 changed files with 60 additions and 17 deletions
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15
proxy/main.go
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@ -11,6 +11,7 @@ import (
"strings"
"time"
"github.com/theodorsm/covert-dtls/pkg/fingerprints"
"gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/ptutil/safelog"
"gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/v2/common/covertdtls"
"gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/v2/common/event"
@ -47,7 +48,8 @@ func main() {
verboseLogging := flag.Bool("verbose", false, "increase log verbosity")
ephemeralPortsRangeFlag := flag.String("ephemeral-ports-range", "", "Set the `range` of ports used for client connections (format:\"<min>:<max>\").\nIf omitted, the ports will be chosen automatically.")
versionFlag := flag.Bool("version", false, "display version info to stderr and quit")
covertDTLSConfig := flag.String("covertdtls-config", "", "Configuration of dtls mimicking and randomization: mimic, randomize, randomizemimic")
covertDTLSConfig := flag.String("covertdtls-config", "", "Configuration of DTLS mimicking and randomization: mimic, randomize, randomizemimic")
covertDTLSfingerprint := flag.String("covertdtls-fingerprint", "", "Mimicking of a raw DTLS fingerprint")
var ephemeralPortsRange []uint16 = []uint16{0, 0}
@ -94,6 +96,15 @@ func main() {
}
}
var cDTLSconfig covertdtls.CovertDTLSConfig
if *covertDTLSConfig != "" {
cDTLSconfig = covertdtls.ParseConfigString(*covertDTLSConfig)
}
if *covertDTLSfingerprint != "" {
cDTLSconfig.Fingerprint = fingerprints.ClientHelloFingerprint(*covertDTLSfingerprint)
}
proxy := sf.SnowflakeProxy{
PollInterval: *pollInterval,
Capacity: uint(*capacity),
@ -114,7 +125,7 @@ func main() {
AllowNonTLSRelay: *allowNonTLSRelay,
SummaryInterval: *summaryInterval,
CovertDTLSConfig: covertdtls.ParseConfigString(*covertDTLSConfig),
CovertDTLSConfig: cDTLSconfig,
}
var logOutput = io.Discard