tracker/http/scrape.go

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// Copyright 2014 The Chihaya Authors. All rights reserved.
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// Use of this source code is governed by the BSD 2-Clause license,
// which can be found in the LICENSE file.
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package http
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import (
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"net/http"
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"github.com/julienschmidt/httprouter"
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"github.com/chihaya/bencode"
"github.com/chihaya/chihaya/drivers/tracker"
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"github.com/chihaya/chihaya/models"
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)
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func (t *Tracker) ServeScrape(w http.ResponseWriter, r *http.Request, p httprouter.Params) (int, error) {
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scrape, err := models.NewScrape(t.cfg, r, p)
if err == models.ErrMalformedRequest {
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fail(w, r, err)
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return http.StatusOK, nil
} else if err != nil {
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return http.StatusInternalServerError, err
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}
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conn, err := t.tp.Get()
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if err != nil {
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return http.StatusInternalServerError, err
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}
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if t.cfg.Private {
_, err = conn.FindUser(scrape.Passkey)
if err == tracker.ErrUserDNE {
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fail(w, r, err)
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return http.StatusOK, nil
} else if err != nil {
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return http.StatusInternalServerError, err
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}
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}
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var torrents []*models.Torrent
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for _, infohash := range scrape.Infohashes {
torrent, err := conn.FindTorrent(infohash)
if err == tracker.ErrTorrentDNE {
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fail(w, r, err)
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return http.StatusOK, nil
} else if err != nil {
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return http.StatusInternalServerError, err
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}
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torrents = append(torrents, torrent)
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}
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resp := bencode.NewDict()
resp["files"] = filesDict(torrents)
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bencoder := bencode.NewEncoder(w)
err = bencoder.Encode(resp)
if err != nil {
return http.StatusInternalServerError, err
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}
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return http.StatusOK, nil
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}
func filesDict(torrents []*models.Torrent) bencode.Dict {
d := bencode.NewDict()
for _, torrent := range torrents {
d[torrent.Infohash] = torrentDict(torrent)
}
return d
}
func torrentDict(torrent *models.Torrent) bencode.Dict {
d := bencode.NewDict()
d["complete"] = len(torrent.Seeders)
d["incomplete"] = len(torrent.Leechers)
d["downloaded"] = torrent.Snatches
return d
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}