Hi!

This is probably the first reverse hash database for torrent files.

Before continuing, please accept that I am handling here with metadata, so no illegal material. Also, I don’t host anything illegal. The links to TPB are nofollow. So don’t sue me or do anything funny, al’right?

Who needs this?
After a .torrent-file is downloaded and the torrent is started, there is no way to find out what torrent it is, because it a hash, the info_hash (see http://wiki.theory.org/BitTorrentSpecification).
In order to know the .torrent-file that belongs to the hash, one has to have the torrent file. I here do a reverse linking of hashes to the torrents for the most popular torrent files on The Pirate Bay.

When watching torrent traffic as an network administrator, you might want to know if the data is legal and complies to your policies.
On the other hand, if you see a torrent loading in your network as a user, if you know what it is, it might be _very_ interesting to join it, as the speed can be expected to be very high.

Technical details are in the howto file.

Where is it?
The Bittorrent info_hash reverse database is here as html with links to TPB, and also available as txt.

Is this a complete database?
Of course not. I took only the most popular torrents down to ~37 leechers from TPB.

Update (2007-09-16):
Now with 12675 entries!!

In the last hour or so I wrote this bdecode C-program (see the
specification of bencoding) since this python program doesn’t work and I hate wikis with logins (otherwise I’d posted it there).

#include <ctype.h>
#include <stdlib.h>
#include <stdio.h>
void tabber(int t){
while(t-->0) printf("\t");
}
int bdecode(char * data, int tab){
/*printf("data: %c%c%c%c%c\n", data[0],data[1],data[2],data[3],data[4]);*/
if (isdigit(data[0])){
int i=0;
int j=0;
while (isdigit(data[i])) {
i++;
}
data[i] = 0;
int len = atoi(data);
i++;
tabber(tab); printf("Bytestring (%d long): ", len);
for (;j<len;j++) {
printf("%c", data[j+i]);
}
printf("\n");
i+=len;
return i;
}else if(data[0] == 'i'){
int i=0;
int n=0;
int sign = 1;
i++;
if(data[1]=='-'){
sign = -1;
i++;
}
while (isdigit(data[i])){
n=n*10+data[i]-'0';
i++;
}
n*=sign;
tabber(tab); printf("Integer: %d\n", n);
i++;
return i;
}else if(data[0] == 'l'){
int i=0;
i++;
tabber(tab); printf("List: \n");
while(data[i] != 'e'){
i += bdecode(&data[i], tab+1);
/*printf("continuing at: %c%c%c%c%c\n", data[i+0],data[i+1],data[i+2],data[i+3],data[i+4]);*/
}
i++;
return i;
}else if(data[0] == 'd'){
int i = 0;
tabber(tab); printf("Dict: \n");
i++;
while(data[i] != 'e'){
i += bdecode(&data[i], tab+1);
/*printf("continuing at: %c%c%c%c%c\n", data[i+0],data[i+1],data[i+2],data[i+3],data[i+4]);*/
tabber(tab+1); printf(" => \n");
i += bdecode(&data[i], tab+2);
/*printf("continuing at: %c%c%c%c%c\n", data[i+0],data[i+1],data[i+2],data[i+3],data[i+4]);*/
printf("\n");
}
i++;
return i;
}
printf("Shouldn't be here\n");
return -1000;
}
int main(int argc, char ** argv){
if(argc>1)
bdecode(argv[1], 1);
else
printf("No arg, sucker!");
return 0;
}

Compile & execute (use the examples from the spec):

$ gcc bdecode2.c -o bdecode2.exe -Wall
$ ./bdecode2.exe d9:publisher3:bob18:publisher.location4:home17:publisher-webpage15:www.example.come
Dict:
Bytestring (9 long): publisher
=>
Bytestring (3 long): bob
Bytestring (18 long): publisher.location
=>
Bytestring (4 long): home
Bytestring (17 long): publisher-webpage
=>
Bytestring (15 long): www.example.com

Seriously, wikis with logins! Where even the discussion pages are locked.

Good old C… and don’t tell me about “Oh, you could save 2 lines there!” I got a compiler for that …

Of course it contains bugs! Good quality ones!

You can run your .torrent files against it:

$ ./bdecode2.exe "$(cat Apocalypto.torrent)" | less
Dict:
Bytestring (8 long): announce
=>
Bytestring (44 long): <a href="http://vip.tracker.thepiratebay.org/announce">http://vip.tracker.thepiratebay.org/announce</a>
Bytestring (13 long): announce-list
=>
List:
List:
Bytestring (44 long): <a href="http://vip.tracker.thepiratebay.org/announce">http://vip.tracker.thepiratebay.org/announce</a>
List:
Bytestring (44 long): <a href="http://tracker.torrentbox.com:2710/announce">http://tracker.torrentbox.com:2710/announce</a>.
List:
Bytestring (41 long): <a href="http://axxo.sladinki007.net:6500/announce">http://axxo.sladinki007.net:6500/announce</a>
List:
Bytestring (39 long): <a href="http://tracker.torrent.to:2710/announce">http://tracker.torrent.to:2710/announce</a>
Bytestring (13 long): creation date
=>
Integer: 1178231686
Bytestring (4 long): info
=>
Dict:
Bytestring (5 long): files
=>
List:
Dict:
Bytestring (6 long): length
=>
Integer: 943704064
Bytestring (4 long): path
=>
List:
Bytestring (45 long): Apocalypto[2006]DvDrip[Eng.Hard.Sub]-aXXo.avi
Dict:
Bytestring (6 long): length
=>
Integer: 623
Bytestring (4 long): path
=>
List:
Bytestring (52 long): IMPORTANT.Read carefully before enjoy this movie.txt
...

Reading metainfo about illegal movies is arguably allowed, I don’t download this. (Nor do I take anything away from anyone using violence, as piracy is defined.)

Was kann man an Studivz besser machen? Oder wo soll man anfangen?

studivz.user (js, 1 KB)
Dieses Greasemonkey-Skript (Greasemonkey vorher in Firefox installieren) ersetzt den öden Text “Log out” durch ein freundliches, flüchtendes, SIW-like “Weg he!”.

Außerdem versucht es ein bisschen Werbung zu entfernen, aber da is Adblock wohl besser.

Ich hab mir gedacht, TUWEL schaut so unübersichtlich aus, da muss man doch was dagegen machen können.

Vorher: (3 Seiten mit Zeugs, das keinen interessiert)

Und das is rausgekommen:
Nachher:
Kleinerer Font, ein paar Dinge entfernt und angeordnet.

Download:
Download Greasemonkey (Extension für Firefox)
Danach dieses kurze Script anklicken tuwel.user (js, 2 KB).

Verbesserungswünsche willkommen!
Ich finde jedenfalls, dass TUWEL lesbarer und übersichtlicher aussieht.

Update:
Ich hab den Text in der mittleren Spalte bisschen größer gemacht, und in Blockschrift. URL ist die gleiche.

Eigentlich könnte man das ganze ein bisschen weiter spinnen und einen ganzen Gothic-Mode schreiben ;-) Wer csszengarden kennt, weiß wo die Grenzen sind.