func randomSettingID() http2.SettingID {
return http2.SettingID(rand.Intn(6))
}
func main() {
filename := ""
hostname := ""
if len(os.Args) > 2 {
filename = os.Args[1]
hostname = os.Args[2]
} else {
fmt.Println("Usage: replay [JSON file] [host:port]\nExiting...")
os.Exit(1)
}
file, err := ioutil.ReadFile(filename)
if err != nil {
panic(err)
}
var lines []string
lines = strings.Split(string(file), "\n")
for _, frameJSON := range lines {
if len(frameJSON) < 1 {
break
}
frame := util.FromJSON([]byte(frameJSON))
c := fuzzer.NewConnection(hostname, true, true, true)
switch frame["FrameMethod"] {
case "RawFrame":
fmt.Println(frame)
frameType := http2.FrameType(uint8(frame["FrameType"].(float64)))
flags := http2.Flags(uint8(frame["Flags"].(float64)))
streamID := uint32(frame["StreamID"].(float64))
payload := util.FromBase64(frame["Payload"].(string))
c.Framer.WriteRawFrame(frameType, flags, streamID, payload)
case "PingFrame":
fmt.Println(frame)
data := [8]byte{byte(frame["Byte1"].(float64)), byte(frame["Byte2"].(float64)), byte(frame["Byte3"].(float64)), byte(frame["Byte4"].(float64)), byte(frame["Byte5"].(float64)), byte(frame["Byte6"].(float64)), byte(frame["Byte7"].(float64)), byte(frame["Byte8"].(float64))}
fmt.Println("SENDING DATA ", data)
c.Framer.WritePing(false, data)
case "SettingsFrame":
fmt.Println(frame)
num_settings := uint32(frame["NumberSettings"].(float64))
settings := []http2.Setting{}
for s := uint32(1); s < num_settings; s++ {
setting_id := fmt.Sprintf("SettingID_%d", s)
setting_val := fmt.Sprintf("SettingVal_%d", s)
setting := http2.Setting{
ID: http2.SettingID(frame[setting_id].(float64)),
Val: uint32(frame[setting_val].(float64)),
}
settings = append(settings, setting)
}
fmt.Println("Settings: ", settings)
c.Framer.WriteSettings(settings...)
case "PushPromise":
fmt.Println(frame)
promise := http2.PushPromiseParam{
StreamID: uint32(frame["StreamID"].(float64)),
PromiseID: uint32(frame["PromiseID"].(float64)),
BlockFragment: util.FromBase64(frame["BlockFragment"].(string)),
EndHeaders: bool(frame["EndHeaders"].(bool)),
PadLength: uint8(frame["PadLength"].(float64)),
}
fmt.Println("Push Promise: ", promise)
c.Framer.WritePushPromise(promise)
case "HeaderFrame":
header_frame := http2.HeadersFrameParam{
StreamID: uint32(frame["StreamID"].(float64)),
BlockFragment: util.FromBase64(frame["BlockFragment"].(string)),
EndStream: bool(frame["EndStream"].(bool)),
EndHeaders: bool(frame["EndHeaders"].(bool)),
}
fmt.Println("Headers: ", header_frame)
c.Framer.WriteHeaders(header_frame)
case "RawTCPFrame":
payload := frame["Payload"].(string)
fmt.Println("RawTCP: ", payload)
io.WriteString(c.Raw, string(payload))
case "PriorityFrame":
priority := http2.PriorityParam{
StreamDep: uint32(frame["StreamDep"].(float64)),
Exclusive: bool(frame["Exclusive"].(bool)),
Weight: uint8(frame["Weight"].(float64)),
}
streamID := uint32(frame["StreamID"].(float64))
fmt.Println("PriorityFrame")
c.Framer.WritePriority(streamID, priority)
case "ContinuationFrame":
streamID := uint32(frame["StreamID"].(float64))
endStream := bool(frame["EndStream"].(bool))
payload := util.FromBase64(frame["Payload"].(string))
c.Framer.WriteContinuation(streamID, endStream, payload)
case "DataFrame":
streamID := uint32(frame["StreamID"].(float64))
endStream := bool(frame["EndStream"].(bool))
payload := util.FromBase64(frame["Payload"].(string))
c.Framer.WriteData(streamID, endStream, payload)
case "WindowUpdate":
streamID := uint32(frame["StreamID"].(float64))
incr := uint32(frame["Increment"].(float64))
c.Framer.WriteWindowUpdate(streamID, incr)
case "ResetFrame":
streamID := uint32(frame["StreamID"].(float64))
errorCode := http2.ErrCode(frame["ErrorCode"].(float64))
c.Framer.WriteRSTStream(streamID, errorCode)
}
}
}
func RunReplay(c *Connection, filename string) {
file, err := os.Open(filename)
if err != nil {
log.Fatal(err)
}
defer file.Close()
scanner := bufio.NewScanner(file)
for scanner.Scan() {
frameJSON := scanner.Text()
frame := util.FromJSON([]byte(frameJSON))
if c.Err != nil {
fmt.Println("Connection Error", c.Err, "restarting connection")
c = NewConnection(c.Host, c.IsTLS, c.IsPreface, c.IsSendSettings)
}
switch frame["FrameMethod"] {
case "RawFrame":
frameType := uint8(frame["FrameType"].(float64))
flags := uint8(frame["Flags"].(float64))
streamID := uint32(frame["StreamID"].(float64))
payload := util.FromBase64(frame["Payload"].(string))
c.WriteRawFrame(frameType, flags, streamID, payload)
case "Ping":
pingData := frame["Data"].([]interface{})
var pingDataArray [8]byte
for i := 0; i < len(pingData); i++ {
pingDataArray[i] = uint8(pingData[i].(float64))
}
c.SendPing(pingDataArray)
case "SettingsFrame":
arrSettings := frame["Settings"].([]interface{})
settings := make([]http2.Setting, len(arrSettings))
for i := 0; i < len(arrSettings); i++ {
singleSettingsInterface := arrSettings[i].(map[string]interface{})
http2Setting := http2.Setting{http2.SettingID(singleSettingsInterface["ID"].(float64)), uint32(singleSettingsInterface["Val"].(float64))}
settings[i] = http2Setting
}
c.WriteSettingsFrame(settings)
case "DataFrame":
streamID := uint32(frame["StreamID"].(float64))
endStream := bool(frame["EndStream"].(bool))
data := util.FromBase64(frame["Data"].(string))
c.WriteDataFrame(streamID, endStream, data)
case "PushPromiseFrame":
streamID := uint32(frame["StreamID"].(float64))
promiseID := uint32(frame["PromiseID"].(float64))
blockFragment := util.FromBase64(frame["BlockFragment"].(string))
endHeaders := frame["EndHeaders"].(bool)
padLength := uint8(frame["PadLength"].(float64))
promise := http2.PushPromiseParam{streamID, promiseID, blockFragment, endHeaders, padLength}
c.WritePushPromiseFrame(promise)
case "HeadersFrame":
headers := frame["Headers"].(map[string]interface{})
headers_map := make(map[string]string)
for key, value := range headers {
switch value := value.(type) {
case string:
headers_map[key] = value
}
}
c.cmdHeaders(headers_map)
case "ContinuationFrame":
streamID := uint32(frame["StreamID"].(float64))
endStream := frame["EndStream"].(bool)
data := util.FromBase64(frame["Data"].(string))
c.WriteContinuationFrame(streamID, endStream, data)
case "PriorityFrame":
streamID := uint32(frame["StreamID"].(float64))
streamDep := uint32(frame["StreamDep"].(float64))
weight := uint8(frame["Weight"].(float64))
exclusive := frame["Exclusive"].(bool)
c.WritePriorityFrame(streamID, streamDep, weight, exclusive)
case "ResetFrame":
streamID := uint32(frame["StreamID"].(float64))
errorCode := uint32(frame["ErrorCode"].(float64))
c.WriteResetFrame(streamID, errorCode)
c = NewConnection(c.Host, c.IsTLS, c.IsPreface, c.IsSendSettings)
case "WindowUpdateFrame":
streamID := uint32(frame["StreamID"].(float64))
incr := uint32(frame["Incr"].(float64))
c.WriteWindowUpdateFrame(streamID, incr)
}
}
fmt.Println("ALL DONE")
}