static void on_announce_done(tr_session * session, bool did_connect, bool did_timeout,
long response_code, const void * msg, size_t msglen, void * vdata) {
tr_announce_response * response;
struct announce_data * data = vdata;
response = &data->response;
(...)
// lê os dados da resposta do tracker
if (variant_loaded && tr_variantIsDict(&benc)) {
int64_t i; size_t len; tr_variant * tmp; // variáveis ...
const char * str; const uint8_t * raw; // ... temporárias
if (tr_variantDictFindStr(&benc, TR_KEY_failure_reason, &str, &len))
response->errmsg = tr_strndup(str, len);
if (tr_variantDictFindStr(&benc, TR_KEY_tracker_id, &str, &len))
response->tracker_id_str = tr_strndup(str, len);
if (tr_variantDictFindInt(&benc, TR_KEY_complete, &i))
response->seeders = i;
(...)
if (tr_variantDictFindRaw(&benc, TR_KEY_peers, &raw, &len)) {
response->pex = tr_peerMgrCompactToPex(raw, len,
NULL, 0, &response->pex_count);
}
else if (tr_variantDictFindList(&benc, TR_KEY_peers, &tmp)) {
response->pex = listToPex(tmp, &response->pex_count);
}
}
static uint64_t loadPeers(tr_variant* dict, tr_torrent* tor)
{
uint8_t const* str;
size_t len;
uint64_t ret = 0;
if (tr_variantDictFindRaw(dict, TR_KEY_peers2, &str, &len))
{
int const numAdded = addPeers(tor, str, len);
tr_logAddTorDbg(tor, "Loaded %d IPv4 peers from resume file", numAdded);
ret = TR_FR_PEERS;
}
if (tr_variantDictFindRaw(dict, TR_KEY_peers2_6, &str, &len))
{
int const numAdded = addPeers(tor, str, len);
tr_logAddTorDbg(tor, "Loaded %d IPv6 peers from resume file", numAdded);
ret = TR_FR_PEERS;
}
return ret;
}
static void
on_announce_done (tr_session * session,
bool did_connect,
bool did_timeout,
long response_code,
const void * msg,
size_t msglen,
void * vdata)
{
tr_announce_response * response;
struct announce_data * data = vdata;
response = &data->response;
response->did_connect = did_connect;
response->did_timeout = did_timeout;
dbgmsg (data->log_name, "Got announce response");
if (response_code != HTTP_OK)
{
const char * fmt = _("Tracker gave HTTP response code %1$ld (%2$s)");
const char * response_str = tr_webGetResponseStr (response_code);
response->errmsg = tr_strdup_printf (fmt, response_code, response_str);
}
else
{
tr_variant benc;
const bool variant_loaded = !tr_variantFromBenc (&benc, msg, msglen);
if (getenv ("TR_CURL_VERBOSE") != NULL)
{
if (!variant_loaded)
fprintf (stderr, "%s", "Announce response was not in benc format\n");
else {
int i, len;
char * str = tr_variantToStr (&benc, TR_VARIANT_FMT_JSON, &len);
fprintf (stderr, "%s", "Announce response:\n< ");
for (i=0; i<len; ++i)
fputc (str[i], stderr);
fputc ('\n', stderr);
tr_free (str);
}
}
if (variant_loaded && tr_variantIsDict (&benc))
{
int64_t i;
size_t len;
tr_variant * tmp;
const char * str;
const uint8_t * raw;
if (tr_variantDictFindStr (&benc, TR_KEY_failure_reason, &str, &len))
response->errmsg = tr_strndup (str, len);
if (tr_variantDictFindStr (&benc, TR_KEY_warning_message, &str, &len))
response->warning = tr_strndup (str, len);
if (tr_variantDictFindInt (&benc, TR_KEY_interval, &i))
response->interval = i;
if (tr_variantDictFindInt (&benc, TR_KEY_min_interval, &i))
response->min_interval = i;
if (tr_variantDictFindStr (&benc, TR_KEY_tracker_id, &str, &len))
response->tracker_id_str = tr_strndup (str, len);
if (tr_variantDictFindInt (&benc, TR_KEY_complete, &i))
response->seeders = i;
if (tr_variantDictFindInt (&benc, TR_KEY_incomplete, &i))
response->leechers = i;
if (tr_variantDictFindInt (&benc, TR_KEY_downloaded, &i))
response->downloads = i;
if (tr_variantDictFindRaw (&benc, TR_KEY_peers6, &raw, &len)) {
dbgmsg (data->log_name, "got a peers6 length of %zu", len);
response->pex6 = tr_peerMgrCompact6ToPex (raw, len,
NULL, 0, &response->pex6_count);
}
if (tr_variantDictFindRaw (&benc, TR_KEY_peers, &raw, &len)) {
dbgmsg (data->log_name, "got a compact peers length of %zu", len);
response->pex = tr_peerMgrCompactToPex (raw, len,
NULL, 0, &response->pex_count);
} else if (tr_variantDictFindList (&benc, TR_KEY_peers, &tmp)) {
response->pex = listToPex (tmp, &response->pex_count);
dbgmsg (data->log_name, "got a peers list with %zu entries",
response->pex_count);
}
}
if (variant_loaded)
tr_variantFree (&benc);
}
tr_runInEventThread (session, on_announce_done_eventthread, data);
}
static uint64_t loadProgress(tr_variant* dict, tr_torrent* tor)
{
uint64_t ret = 0;
tr_variant* prog;
tr_info const* inf = tr_torrentInfo(tor);
for (size_t i = 0; i < inf->pieceCount; ++i)
{
inf->pieces[i].timeChecked = 0;
}
if (tr_variantDictFindDict(dict, TR_KEY_progress, &prog))
{
char const* err;
char const* str;
uint8_t const* raw;
size_t rawlen;
tr_variant* l;
tr_variant* b;
struct tr_bitfield blocks = TR_BITFIELD_INIT;
if (tr_variantDictFindList(prog, TR_KEY_time_checked, &l))
{
/* per-piece timestamps were added in 2.20.
If some of a file's pieces have been checked more recently than
the file's mtime, and some lest recently, then that file will
have a list containing timestamps for each piece.
However, the most common use case is that the file doesn't change
after it's downloaded. To reduce overhead in the .resume file,
only a single timestamp is saved for the file if *all* or *none*
of the pieces were tested more recently than the file's mtime. */
for (tr_file_index_t fi = 0; fi < inf->fileCount; ++fi)
{
tr_variant* b = tr_variantListChild(l, fi);
tr_file const* f = &inf->files[fi];
if (tr_variantIsInt(b))
{
int64_t t;
tr_variantGetInt(b, &t);
for (tr_piece_index_t i = f->firstPiece; i <= f->lastPiece; ++i)
{
inf->pieces[i].timeChecked = (time_t)t;
}
}
else if (tr_variantIsList(b))
{
int64_t offset = 0;
int const pieces = f->lastPiece + 1 - f->firstPiece;
tr_variantGetInt(tr_variantListChild(b, 0), &offset);
for (int i = 0; i < pieces; ++i)
{
int64_t t = 0;
tr_variantGetInt(tr_variantListChild(b, i + 1), &t);
inf->pieces[f->firstPiece + i].timeChecked = (time_t)(t != 0 ? t + offset : 0);
}
}
}
}
else if (tr_variantDictFindList(prog, TR_KEY_mtimes, &l))
{
/* Before 2.20, we stored the files' mtimes in the .resume file.
When loading the .resume file, a torrent's file would be flagged
as untested if its stored mtime didn't match its real mtime. */
for (tr_file_index_t fi = 0; fi < inf->fileCount; ++fi)
{
int64_t t;
if (tr_variantGetInt(tr_variantListChild(l, fi), &t))
{
tr_file const* f = &inf->files[fi];
time_t const mtime = tr_torrentGetFileMTime(tor, fi);
time_t const timeChecked = mtime == t ? mtime : 0;
for (tr_piece_index_t i = f->firstPiece; i <= f->lastPiece; ++i)
{
inf->pieces[i].timeChecked = timeChecked;
}
}
}
}
err = NULL;
tr_bitfieldConstruct(&blocks, tor->blockCount);
if ((b = tr_variantDictFind(prog, TR_KEY_blocks)) != NULL)
{
size_t buflen;
uint8_t const* buf;
if (!tr_variantGetRaw(b, &buf, &buflen))
{
err = "Invalid value for \"blocks\"";
}
else if (buflen == 3 && memcmp(buf, "all", 3) == 0)
{
tr_bitfieldSetHasAll(&blocks);
}
else if (buflen == 4 && memcmp(buf, "none", 4) == 0)
{
tr_bitfieldSetHasNone(&blocks);
}
else
{
tr_bitfieldSetRaw(&blocks, buf, buflen, true);
}
}
else if (tr_variantDictFindStr(prog, TR_KEY_have, &str, NULL))
{
if (strcmp(str, "all") == 0)
{
tr_bitfieldSetHasAll(&blocks);
}
else
{
err = "Invalid value for HAVE";
}
}
else if (tr_variantDictFindRaw(prog, TR_KEY_bitfield, &raw, &rawlen))
{
tr_bitfieldSetRaw(&blocks, raw, rawlen, true);
}
else
{
err = "Couldn't find 'pieces' or 'have' or 'bitfield'";
}
if (err != NULL)
{
tr_logAddTorDbg(tor, "Torrent needs to be verified - %s", err);
}
else
{
tr_cpBlockInit(&tor->completion, &blocks);
}
tr_bitfieldDestruct(&blocks);
ret = TR_FR_PROGRESS;
}
return ret;
}
int
tr_dhtInit (tr_session *ss)
{
tr_variant benc;
int rc;
bool have_id = false;
char * dat_file;
uint8_t * nodes = NULL, * nodes6 = NULL;
const uint8_t * raw;
size_t len, len6;
struct bootstrap_closure * cl;
if (session) /* already initialized */
return -1;
tr_logAddNamedDbg ("DHT", "Initializing DHT");
if (tr_env_key_exists ("TR_DHT_VERBOSE"))
dht_debug = stderr;
dat_file = tr_buildPath (ss->configDir, "dht.dat", NULL);
rc = tr_variantFromFile (&benc, TR_VARIANT_FMT_BENC, dat_file, NULL) ? 0 : -1;
tr_free (dat_file);
if (rc == 0) {
have_id = tr_variantDictFindRaw (&benc, TR_KEY_id, &raw, &len);
if (have_id && len==20)
memcpy (myid, raw, len);
if (ss->udp_socket != TR_BAD_SOCKET &&
tr_variantDictFindRaw (&benc, TR_KEY_nodes, &raw, &len) && ! (len%6)) {
nodes = tr_memdup (raw, len);
}
if (ss->udp6_socket != TR_BAD_SOCKET &&
tr_variantDictFindRaw (&benc, TR_KEY_nodes6, &raw, &len6) && ! (len6%18)) {
nodes6 = tr_memdup (raw, len6);
}
tr_variantFree (&benc);
}
if (nodes == NULL)
len = 0;
if (nodes6 == NULL)
len6 = 0;
if (have_id)
tr_logAddNamedInfo ("DHT", "Reusing old id");
else {
/* Note that DHT ids need to be distributed uniformly,
* so it should be something truly random. */
tr_logAddNamedInfo ("DHT", "Generating new id");
tr_rand_buffer (myid, 20);
}
rc = dht_init (ss->udp_socket, ss->udp6_socket, myid, NULL);
if (rc < 0)
goto fail;
session = ss;
cl = tr_new (struct bootstrap_closure, 1);
cl->session = session;
cl->nodes = nodes;
cl->nodes6 = nodes6;
cl->len = len;
cl->len6 = len6;
tr_threadNew (dht_bootstrap, cl);
dht_timer = evtimer_new (session->event_base, timer_callback, session);
tr_timerAdd (dht_timer, 0, tr_rand_int_weak (1000000));
tr_logAddNamedDbg ("DHT", "DHT initialized");
return 1;
fail:
tr_logAddNamedDbg ("DHT", "DHT initialization failed (errno = %d)", errno);
session = NULL;
return -1;
}
