Recently I realized that my changes to /etc/resolve.conf always got overwritten upon system reboot, after searching the web for a while I found the solution from StackExchange: Ubuntu 16.04 IfContinue reading
Today my server experienced an outage and restarted automatically. However, my blog didn’t go online after that. With a little invesitgation it immediately got obvious that the nginx failed toContinue reading
Recently I built Linux 5.10 LTS for my N1 box. Below are the patches I needed during the building process. TEXT_OFFSET Obsolete: See comments from justin below, it’s no longerContinue reading
I wrote a blog about blocking Thunder in tranmission-daemon 2.94. The patch does not apply cleanly on Transmission 3.00, so I update it here:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 | --- a/libtransmission/peer-mgr.c 2021-08-31 03:10:20.435836776 +0800 +++ b/libtransmission/peer-mgr.c 2021-08-31 03:14:31.268153266 +0800 @@ -2007,6 +2007,21 @@ tr_peerMsgsUpdateActive(msgs, TR_DOWN); } +static bool isUserAgentBad(const char* ua) +{ + static const char* blacklist[] = {"Thunder", "Xunlei"}; + int i; + + for (i = 0; i != sizeof(blacklist) / sizeof(blacklist[0]); ++i) { + // Performs bad, honestly. + if (!strncmp(blacklist[i], ua, strlen(blacklist[i]))) { + return true; + } + } + return false; +} + + /* FIXME: this is kind of a mess. */ static bool myHandshakeDoneCB(tr_handshake* handshake, tr_peerIo* io, bool readAnythingFromPeer, bool isConnected, uint8_t const* peer_id, void* vmanager) @@ -2100,21 +2115,29 @@ tr_quark client; tr_peerIo* io; char buf[128]; + const char* ua = ""; if (peer_id != NULL) { - client = tr_quark_new(tr_clientForId(buf, sizeof(buf), peer_id), TR_BAD_SIZE); + client = tr_quark_new((ua = tr_clientForId(buf, sizeof(buf), peer_id)), TR_BAD_SIZE); } else { client = TR_KEY_NONE; } - io = tr_handshakeStealIO(handshake); /* this steals its refcount too, which is balanced by our unref in peerDelete() */ - tr_peerIoSetParent(io, &s->tor->bandwidth); - createBitTorrentPeer(s->tor, io, atom, client); + if (!isUserAgentBad(ua)) + { + io = tr_handshakeStealIO(handshake); /* this steals its refcount too, which is balanced by our unref in peerDelete() */ + tr_peerIoSetParent(io, &s->tor->bandwidth); + createBitTorrentPeer(s->tor, io, atom, client); - success = true; + success = true; + } + else + { + tr_logAddDebug("Bad user agent \"%s\" (peer %s) tried to connect to us", ua, tr_atomAddrStr(atom)); + } } } } |
The rest instructions are theContinue reading
By default transmission-web-control forces a default reload interval of 5 seconds, and a minimum of 3 seconds. As I’m not that into reducing bandwidth, I overrode the default behavior. DefaultContinue reading
By default Linux (randomly?) chooses “Client IPv6 Address” (given by HE.net) as source address for outbound connections. This can be inconvenient sometimes tough. To override this, it’s possible to addContinue reading
Transmission Web Control allows setting default language in /usr/share/transmission/web/tr-web-control/config.js:
1 2 3 4 5 6 | system.config = $.extend(system.config, { // ... // default language defaultLang: "en", // ... }); |
… but it won’t take effect in mobile pages. This seems to be a minor defect in it’s mobile homeContinue reading
Transmission Web Control is a gorgeous web UI for transmission-daemon. However, the default installation does not have an Apple Touch Icon. Meanwhile, the original control UI does come with anContinue reading
The first step would be somehow assign a static interface ID to the device. Although this should always be the case (even if your device enabled RFC4941 – Privacy ExtensionsContinue reading
From man interfaces:
1 2 3 4 5 6 7 8 9 10 11 | INET6 ADDRESS FAMILY This section documents the methods available in the inet6 address family. The auto Method [...] Options privext int Privacy extensions (RFC4941) (0=off, 1=assign, 2=prefer) |
So I put the following to /etc/interfaces.d/eth0:
1 2 | iface eth0 inet6 auto privext 2 |