static char*
makeURL( tr_webseed * w,
const tr_file * file )
{
char * ret;
struct evbuffer * out = evbuffer_new( );
const char * url = w->url;
const size_t url_len = strlen( url );
evbuffer_add( out, url, url_len );
/* if url ends with a '/', add the torrent name */
if( url[url_len - 1] == '/' && file->name )
tr_http_escape( out, file->name, strlen(file->name), FALSE );
ret = tr_strndup( EVBUFFER_DATA( out ), EVBUFFER_LENGTH( out ) );
evbuffer_free( out );
return ret;
}
static char*
announce_url_new (const tr_session * session, const tr_announce_request * req)
{
const char * str;
const unsigned char * ipv6;
struct evbuffer * buf = evbuffer_new ();
char escaped_info_hash[SHA_DIGEST_LENGTH*3 + 1];
tr_http_escape_sha1 (escaped_info_hash, req->info_hash);
evbuffer_expand (buf, 1024);
evbuffer_add_printf (buf, "%s"
"%c"
"info_hash=%s"
"&peer_id=%*.*s"
"&port=%d"
"&uploaded=%" PRIu64
"&downloaded=%" PRIu64
"&left=%" PRIu64
"&numwant=%d"
"&key=%x"
"&compact=1"
"&supportcrypto=1",
req->url,
strchr (req->url, '?') ? '&' : '?',
escaped_info_hash,
PEER_ID_LEN, PEER_ID_LEN, req->peer_id,
req->port,
req->up,
req->down,
req->leftUntilComplete,
req->numwant,
req->key);
if (session->encryptionMode == TR_ENCRYPTION_REQUIRED)
evbuffer_add_printf (buf, "&requirecrypto=1");
if (req->corrupt)
evbuffer_add_printf (buf, "&corrupt=%" PRIu64, req->corrupt);
str = get_event_string (req);
if (str && *str)
evbuffer_add_printf (buf, "&event=%s", str);
str = req->tracker_id_str;
if (str && *str)
evbuffer_add_printf (buf, "&trackerid=%s", str);
/* There are two incompatible techniques for announcing an IPv6 address.
BEP-7 suggests adding an "ipv6=" parameter to the announce URL,
while OpenTracker requires that peers announce twice, once over IPv4
and once over IPv6.
To be safe, we should do both: add the "ipv6=" parameter and
announce twice. At any rate, we're already computing our IPv6
address (for the LTEP handshake), so this comes for free. */
ipv6 = tr_globalIPv6 ();
if (ipv6) {
char ipv6_readable[INET6_ADDRSTRLEN];
evutil_inet_ntop (AF_INET6, ipv6, ipv6_readable, INET6_ADDRSTRLEN);
evbuffer_add_printf (buf, "&ipv6=");
tr_http_escape (buf, ipv6_readable, -1, true);
}
return evbuffer_free_to_str (buf);
}
