static int HttpGetRequestHeader(lua_State *luastate)
{
return HttpGetHeader(luastate, 0 /* request */);
}
static int HttpGetResponseHeader(lua_State *luastate)
{
return HttpGetHeader(luastate, 1 /* response */);
}
dt_result_t btTracker::CheckResponse()
{
const char *pdata;
ssize_t r;
size_t q, hlen, dlen;
r = m_response_buffer.FeedIn(m_sock);
m_last_timestamp = now;
if( r > 0 ){
// connection is still open; may have more data coming
return DT_NORMAL;
}
q = m_response_buffer.Count();
if( !q ){
int error = 0;
socklen_t n = sizeof(error);
if( getsockopt(m_sock, SOL_SOCKET, SO_ERROR, &error, &n) < 0 )
error = errno;
if( error ){
CONSOLE.Warning(2, "warn, received nothing from tracker at %s: %s",
m_spec->url, strerror(error));
}else{
CONSOLE.Warning(2, "warn, received nothing from tracker at %s",
m_spec->url);
}
Reset(); // try again
return DT_FAILURE;
}
hlen = HttpSplit(m_response_buffer.BasePointer(), q, &pdata, &dlen);
if( !hlen ){
CONSOLE.Warning(2, "warn, no HTTP header in response from tracker at %s",
m_spec->url);
return DT_FAILURE;
}
r = HttpGetStatusCode(m_response_buffer.BasePointer(), hlen);
if( r != 200 ){
if( r == 301 || r == 302 || r == 303 || r == 307 ){
char *tmpurl = (char *)0, *c;
tracker_spec *tmpspec;
if( HttpGetHeader(m_response_buffer.BasePointer(), hlen, "Location",
&tmpurl) < 0 ){
if( errno ){
CONSOLE.Warning(2,
"Error parsing redirect response from tracker at %s: %s",
m_spec->url, strerror(errno));
}else{
CONSOLE.Warning(2,
"warn, redirect with no location from tracker at %s", m_spec->url);
}
if( tmpurl ) delete []tmpurl;
return DT_FAILURE;
}
if( !(tmpspec = new tracker_spec) ){
CONSOLE.Warning(1,
"warn, could not allocate memory for tracker redirect from %s",
m_spec->url);
errno = ENOMEM;
delete []tmpurl;
return DT_FAILURE;
}
if( (c = strstr(tmpurl, "?info_hash=")) ||
(c = strstr(tmpurl, "&info_hash=")) ){
*c = '\0';
}
if( UrlSplit(tmpurl, &tmpspec->host, &tmpspec->port,
&tmpspec->request) < 0 ){
CONSOLE.Warning(1,
"warn, error parsing redirected tracker URL from %s (%s): %s",
m_spec->url, tmpurl, errno ? strerror(errno) : "invalid format");
delete tmpspec;
delete []tmpurl;
return DT_FAILURE;
}else{
CONSOLE.Debug("tracker at %s redirected%s to %s",
m_spec->url, (r == 301) ? " permanently" : "", tmpurl);
if( (tmpspec->url = new char[strlen(tmpurl) + 1]) )
strcpy(tmpspec->url, tmpurl);
else{
CONSOLE.Warning(1,
"warn, could not allocate memory for tracker redirect from %s",
m_spec->url);
errno = ENOMEM;
delete tmpspec;
delete []tmpurl;
return DT_FAILURE;
}
delete []tmpurl;
Reset();
m_redirect = m_spec;
m_spec = tmpspec;
if( BuildBaseRequest() < 0 ){
delete m_spec;
m_spec = m_redirect;
m_redirect = (tracker_spec *)0;
return DT_FAILURE;
}else if( r == 301 ){ // moved permanently
delete m_redirect;
m_redirect = (tracker_spec *)0;
}
}
if( Connect() < 0 ){
Reset();
delete m_spec;
m_spec = m_redirect;
m_redirect = (tracker_spec *)0;
return DT_FAILURE;
}else return DT_NORMAL;
}else if( r >= 400 ){
CONSOLE.Warning(2, "Tracker response code %d from %s%s", r, m_spec->url,
(r >= 500) ? "" :
"; the torrent is not registered on this tracker"
" or may have been removed.");
if( pdata && dlen ){ // write(STDERR_FILENO, pdata, dlen);
char data[dlen + 1];
memcpy(data, pdata, dlen);
data[dlen] = '\0';
CONSOLE.Warning(0, "Tracker response data DUMP:");
CONSOLE.Warning(0, "%s", data);
CONSOLE.Warning(0, "== DUMP OVER==");
}
m_interval = (m_default_interval > 300) ? m_default_interval : 300;
m_f_started = 0;
return DT_FAILURE;
}else{
m_f_started = 0;
return DT_FAILURE;
}
}
m_f_started = m_f_stop ? 0 : 1;
m_refuse_click = 0;
m_ok_click++;
if( !pdata ){
CONSOLE.Warning(2, "warn, received no response data from tracker at %s",
m_spec->url);
return DT_FAILURE;
}
return ParseResponse(pdata, dlen);
}