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Split unsafe code into separate file
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,114 @@ | ||
| package proxy | ||
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| import ( | ||
| "bytes" | ||
| "context" | ||
| "encoding/binary" | ||
| "fmt" | ||
| "io" | ||
| "io/ioutil" | ||
| "net/http" | ||
| "time" | ||
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| "golang.org/x/time/rate" | ||
| ) | ||
|
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| // UNSAFE | ||
| // HandleStatsSet is the handler for buffered stats/set so the stats can be flushed asynchronously from the game. | ||
| func (s *StriveAPIProxy) HandleStatsSet(w http.ResponseWriter, r *http.Request) { | ||
| req := r.Clone(context.Background()) | ||
| // https://github.com/golang/go/issues/36095 | ||
| var b bytes.Buffer | ||
| b.ReadFrom(r.Body) | ||
| req.Body = ioutil.NopCloser(bytes.NewReader(b.Bytes())) | ||
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| s.statsQueue <- req | ||
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| // Fake headers (v1.07) | ||
| header := w.Header() | ||
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| header.Set("Content-Type", "text/html; charset=UTF-8") // GGST didn't care if this wasn't set, but why not | ||
| header.Set("Server", "Apache") // GGST didn't care if this wasn't set, but why not | ||
| header.Set("X-Powered-By", "PHP/7.2.34") // GGST didn't care if this wasn't set, but why not | ||
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| // Fake body (v1.07) | ||
| type statsSetBody struct { // 59 bytes | ||
| Header [4]byte // Unknown use. Always 0x9298ad36 | ||
| Hash [12]byte // Some sort of incrementing hash? Maybe a Req/Resp ID. | ||
| Spacer1 [2]byte // Unknown use. Always 0x00b3 | ||
| Timestamp [19]byte // Current time in "YYYY/MM/DD HH:MM:SS" in UTC | ||
| Spacer2 [1]byte // Unknown use. Always 0xa5 | ||
| Version1 [5]byte // Some sort of ASCII version number. "0.0.5", was "0.0.4" in v1.05 | ||
| Spacer3 [1]byte // Unknown use. Always 0xa5 | ||
| Version2 [5]byte // Another version number. Always "0.0.2" | ||
| Spacer4 [1]byte // Unknown use. Always 0xa5 | ||
| Version3 [5]byte // ANOTHER version number. Always "0.0.2" | ||
| Footer [4]byte // Unknown use. 0xa0a09100 | ||
| } | ||
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| var hash [12]byte // Does it even matter if we fill this? | ||
| copy(hash[:], "badddeadc0de") | ||
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| var timestamp [19]byte | ||
| copy(timestamp[:], time.Now().UTC().Format("2006/01/02 15:04:05")) | ||
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| body := statsSetBody{ | ||
| Header: [4]byte{0x92, 0x98, 0xad, 0x36}, | ||
| Hash: hash, | ||
| Spacer1: [2]byte{0x00, 0xb3}, | ||
| Timestamp: timestamp, | ||
| Spacer2: [1]byte{0xa5}, | ||
| Version1: [5]byte{0x30, 0x2e, 0x30, 0x2e, 0x35}, // 0.0.5 | ||
| Spacer3: [1]byte{0xa5}, | ||
| Version2: [5]byte{0x30, 0x2e, 0x30, 0x2e, 0x32}, // 0.0.2 | ||
| Spacer4: [1]byte{0xa5}, | ||
| Version3: [5]byte{0x30, 0x2e, 0x30, 0x2e, 0x32}, // 0.0.2 | ||
| Footer: [4]byte{0xa0, 0xa0, 0x91, 0x00}, | ||
| } | ||
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| err := binary.Write(w, binary.BigEndian, body) | ||
| if err != nil { | ||
| fmt.Println(err) | ||
| } | ||
| } | ||
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| func (s *StriveAPIProxy) startStatsSender() chan<- *http.Request { | ||
| reqQueue := make(chan *http.Request, 32) // TODO: Don't hardcode size. Needs to have enough for a normal /api/stats/set burst. | ||
| s.wg.Add(1) | ||
| go func() { | ||
| defer s.wg.Done() | ||
| rl := rate.NewLimiter(rate.Every(100*time.Millisecond), 1) // GGST always waits 100ms between API calls. | ||
| fmt.Println("Started /api/statistics/set sender.") | ||
| for req := range reqQueue { | ||
| // Retry the writes, since we're now responsible for them. | ||
| // Loses transparency here as we don't may not react the same was as the client. | ||
| for i := 0; i < 5; i++ { // GGST retries 5 times on stats/write | ||
| rl.Wait(context.Background()) | ||
| newReq := req.Clone(context.Background()) | ||
| res, err := s.proxyRequest(newReq) // TODO: Maybe capture result to fake hashes better. | ||
| if err != nil { | ||
| fmt.Println(err) | ||
| continue | ||
| } | ||
| if res.StatusCode != http.StatusOK { | ||
| fmt.Println(res) | ||
| io.Copy(io.Discard, res.Body) | ||
| res.Body.Close() | ||
| continue | ||
| } | ||
| fmt.Println("Asynchronously uploaded stats.") | ||
| io.Copy(io.Discard, res.Body) | ||
| res.Body.Close() | ||
| break | ||
| } | ||
| } | ||
| }() | ||
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| return reqQueue | ||
| } | ||
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| func (s *StriveAPIProxy) stopStatsSender() { | ||
| if s.statsQueue != nil { | ||
| close(s.statsQueue) | ||
| } | ||
| } |