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Add d.tracker_domain command from rtorrent-ps #49

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Add d.tracker_domain command from rtorrent-ps #49

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56 changes: 56 additions & 0 deletions src/command_download.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -732,6 +732,58 @@ d_list_remove(core::Download* download,
return torrent::Object();
}

// return the "main" tracker for this download item
torrent::Tracker*
get_active_tracker(torrent::Download* item) {
torrent::TrackerList* tl = item->tracker_list();
torrent::Tracker* tracker = 0;
torrent::Tracker* fallback = 0;

for (size_t trkidx = 0; trkidx < tl->size(); trkidx++) {
tracker = tl->at(trkidx);
if (tracker->is_usable() && tracker->type() == torrent::Tracker::TRACKER_HTTP) {
if (!fallback) fallback = tracker;
if (tracker->scrape_complete() || tracker->scrape_incomplete()) {
break;
}
}
tracker = 0;
}
if (!tracker && tl->size()) tracker = fallback ? fallback : tl->at(0);

return tracker;
}

// return the domain name of the "main" tracker of the given download item
std::string
get_active_tracker_domain(torrent::Download* item) {
std::string url;
torrent::Tracker* tracker = get_active_tracker(item);

if (tracker && !tracker->url().empty()) {
url = tracker->url();

// snip url to domain name
if (url.compare(0, 7, "http://") == 0) url = url.substr(7);
if (url.compare(0, 8, "https://") == 0) url = url.substr(8);
if (url.find('/') > 0) url = url.substr(0, url.find('/'));
if (url.find(':') > 0) url = url.substr(0, url.find(':'));

// remove some common cruft
const char* domain_cruft[] = {
"tracker", "1.", "2.", "001.", ".",
"www.", "cfdata.",
0
};
for (const char** cruft = domain_cruft; *cruft; cruft++) {
int cruft_len = strlen(*cruft);
if (url.compare(0, cruft_len, *cruft) == 0) url = url.substr(cruft_len);
}
}

return url;
}

#define CMD2_ON_INFO(func) \
[](const auto& download, const auto&) { return download->info()->func(); }
#define CMD2_ON_DATA(func) \
Expand Down Expand Up @@ -822,6 +874,10 @@ initialize_command_download() {
CMD2_DL("d.creation_date", CMD2_ON_INFO(creation_date));
CMD2_DL("d.load_date", CMD2_ON_INFO(load_date));

CMD2_DL("d.tracker_domain", [](const auto& download, const auto&) {
return get_active_tracker_domain(download->download());
});

//
// Network related:
//
Expand Down