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user: format clientRandom string in gotls module #557

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May 28, 2024
Merged

user: format clientRandom string in gotls module #557

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16 changes: 9 additions & 7 deletions user/module/probe_gotls.go
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Original file line number Diff line number Diff line change
Expand Up @@ -242,28 +242,30 @@ func (g *GoTLSProbe) saveMasterSecret(secretEvent *event.MasterSecretGotlsEvent)
return
}

// TODO 保存多个lable 整组里？？？
// 保存到多个lable 整组里
// save to file
var b string
var b, cr string
var e error
b = fmt.Sprintf("%s %02x %02x\n", label, clientRandom, secret)
cr = fmt.Sprintf("%02x", clientRandom)
b = fmt.Sprintf("%s %s %02x\n", label, cr, secret)

switch g.eBPFProgramType {
case TlsCaptureModelTypeKeylog:
var l int
l, e = g.keylogger.WriteString(b)
if e != nil {
g.logger.Warn().Err(e).Str("clientRandom", clientRandom).Msg("save masterSecrets to keylog error")
g.logger.Warn().Err(e).Str("clientRandom", cr).Msg("save masterSecrets to keylog error")
return
}
g.logger.Info().Str("clientRandom", clientRandom).Str("label", label).Int("bytes", l).Msg("save CLIENT_RANDOM success")
g.logger.Info().Str("clientRandom", cr).Str("label", label).Int("bytes", l).Msg("save CLIENT_RANDOM success")
case TlsCaptureModelTypePcap:
e = g.savePcapngSslKeyLog([]byte(b))
if e != nil {
g.logger.Warn().Err(e).Str("clientRandom", clientRandom).Msg("save masterSecrets to pcapNG error")
g.logger.Warn().Err(e).Str("clientRandom", cr).Msg("save masterSecrets to pcapNG error")
return
}
default:
g.logger.Warn().Str("clientRandom", clientRandom).Uint8("eBPFProgramType", uint8(g.eBPFProgramType)).Msg("unhandled default case with eBPF Program type")
g.logger.Warn().Str("clientRandom", cr).Uint8("eBPFProgramType", uint8(g.eBPFProgramType)).Msg("unhandled default case with eBPF Program type")
}
}

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