/***************************************************************************
* Copyright (C) 2006 by Ilya Kotov *
* forkotov02@hotmail.ru *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include <QApplication>
#include <QStringList>
#include "downloader.h"
//curl callbacks
static size_t curl_write_data(void *data, size_t size, size_t nmemb,
void *pointer)
{
Downloader *dl = (Downloader *)pointer;
dl->mutex()->lock ();
size_t buf_start = dl->stream()->buf_fill;
size_t data_size = size * nmemb;
dl->stream()->buf_fill += data_size;
dl->stream()->buf = (char *)realloc (dl->stream()->buf, dl->stream()->buf_fill);
memcpy (dl->stream()->buf + buf_start, data, data_size);
dl->mutex()->unlock();
return data_size;
}
static size_t curl_header(void *data, size_t size, size_t nmemb,
void *pointer)
{
Downloader *dl = (Downloader *)pointer;
dl->mutex()->lock ();
size_t data_size = size * nmemb;
if (data_size < 3)
{
dl->mutex()->unlock();
return data_size;
}
//qDebug("header received: %s", (char*) data);
QString str = QString::fromAscii((char *) data, data_size);
str = str.trimmed ();
if (str.left(4).contains("HTTP"))
{
qDebug("Downloader: header received");
//TODO open metadata socket
}
else if (str.left(4).contains("ICY"))
{
qDebug("Downloader: shoutcast header received");
dl->stream()->icy_meta_data = TRUE;
}
else
{
QString key = str.left(str.indexOf(":")).trimmed().toLower();
QString value = str.right(str.size() - str.indexOf(":") - 1).trimmed().toLower();
dl->stream()->header.insert(key, value);
qDebug("Downloader: key=%s, value=%s",qPrintable(key),qPrintable(value));
if (dl->stream()->icy_meta_data && (key == "icy-metaint"))
{
dl->stream()->icy_metaint = value.toInt();
}
}
dl->mutex()->unlock();
return data_size;
}
int curl_progress(void *pointer, double dltotal, double dlnow, double ultotal, double ulnow)
{
Downloader *dl = (Downloader *)pointer;
dl->mutex()->lock ();
bool aborted = dl->stream()->aborted;
dl->mutex()->unlock();
if (aborted)
return -1;
return 0;
}
Downloader::Downloader(QObject *parent, const QString &url)
: QThread(parent)
{
m_url = url;
curl_global_init(CURL_GLOBAL_ALL);
m_stream.buf_fill = 0;
m_stream.buf = 0;
m_stream.icy_meta_data = FALSE;
m_stream.aborted = TRUE;
m_stream.icy_metaint = 0;
m_handle = 0;
m_metacount = 0;
}
Downloader::~Downloader()
{
abort();
}
qint64 Downloader::read(char* data, qint64 maxlen)
{
qint64 len = 0;
m_mutex.lock();
if (!m_stream.icy_meta_data || m_stream.icy_metaint == 0)
len = readBuffer(data, maxlen);
else
{
qint64 nread = 0;
qint64 to_read;
while (maxlen > nread && m_stream.buf_fill > nread)
{
to_read = qMin<qint64>(m_stream.icy_metaint - m_metacount, maxlen - nread);
//to_read = (maxlen - nread);
qint64 res = readBuffer(data + nread, to_read);
nread += res;
m_metacount += res;
if (m_metacount == m_stream.icy_metaint)
{
m_metacount = 0;
m_mutex.unlock();
readICYMetaData();
m_mutex.lock();
}
}
len = nread;
}
m_mutex.unlock();
return len;
}
Stream *Downloader::stream()
{
return &m_stream;
}
QMutex *Downloader::mutex()
{
return &m_mutex;
}
QString Downloader::contentType()
{
QString content;
if (m_stream.header.contains("content-type"))
content = m_stream.header.value("content-type");
return content;
}
void Downloader::abort()
{
m_mutex.lock();
if (m_stream.aborted)
{
m_mutex.unlock();
return;
}
m_stream.aborted = TRUE;
m_mutex.unlock();
wait();
if (m_handle)
{
curl_easy_cleanup(m_handle);
m_handle = 0;
}
}
int Downloader::bytesAvailable()
{
m_mutex.lock();
int b = m_stream.buf_fill;
m_mutex.unlock();
return b;
}
void Downloader::run()
{
qDebug("Downloader: starting download thread");
m_handle = curl_easy_init();
// Set url to download
curl_easy_setopt(m_handle, CURLOPT_URL, m_url.toAscii().constData());
//qDebug("Downloader: url: %s", qPrintable(url));
// callback for wrting
curl_easy_setopt(m_handle, CURLOPT_WRITEFUNCTION, curl_write_data);
// Set destination file
curl_easy_setopt(m_handle, CURLOPT_WRITEDATA, this);
curl_easy_setopt(m_handle, CURLOPT_HEADERDATA, this);
curl_easy_setopt(m_handle, CURLOPT_HEADERFUNCTION, curl_header);
// Some SSL mambo jambo
curl_easy_setopt(m_handle, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_easy_setopt(m_handle, CURLOPT_SSL_VERIFYHOST, 0);
// Disable progress meter
curl_easy_setopt(m_handle, CURLOPT_NOPROGRESS, 0);
curl_easy_setopt(m_handle, CURLOPT_PROGRESSDATA, this);
curl_easy_setopt(m_handle, CURLOPT_PROGRESSFUNCTION, curl_progress);
// Any kind of authentication
curl_easy_setopt(m_handle, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
//curl_easy_setopt(m_handle, CURLOPT_VERBOSE, 1);
// Auto referrer
curl_easy_setopt(m_handle, CURLOPT_AUTOREFERER, 1);
// Follow redirections
curl_easy_setopt(m_handle, CURLOPT_FOLLOWLOCATION, 1);
// user agent
curl_easy_setopt(m_handle, CURLOPT_USERAGENT, "qmmp/0.2");
curl_easy_setopt(m_handle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
struct curl_slist *http200_aliases = curl_slist_append(NULL, "ICY");
struct curl_slist *http_headers = curl_slist_append(NULL, "Icy-MetaData: 1");
curl_easy_setopt(m_handle, CURLOPT_HTTP200ALIASES, http200_aliases);
curl_easy_setopt(m_handle, CURLOPT_HTTPHEADER, http_headers);
m_mutex.lock();
m_stream.buf_fill = 0;
m_stream.buf = 0;
m_stream.aborted = FALSE;
m_stream.header.clear ();
int return_code;
qDebug("Downloader: starting libcurl");
m_mutex.unlock();
return_code = curl_easy_perform(m_handle);
//qDebug("curl_easy_perform %d", return_code);
m_mutex.lock();
m_stream.aborted = TRUE;
m_stream.buf_fill = 0;
if (m_stream.buf)
delete m_stream.buf;
m_stream.buf = 0;
m_mutex.unlock();
qDebug("Downloader: thread exited");
}
qint64 Downloader::readBuffer(char* data, qint64 maxlen)
{
if (m_stream.buf_fill > 0 && !m_stream.aborted)
{
int len = qMin<qint64>(m_stream.buf_fill, maxlen);
memcpy(data, m_stream.buf, len);
m_stream.buf_fill -= len;
memmove(m_stream.buf, m_stream.buf + len, m_stream.buf_fill);
return len;
}
return 0;
}
const QString &Downloader::title() const
{
return m_title;
}
void Downloader::readICYMetaData()
{
uint8_t packet_size;
m_metacount = 0;
m_mutex.lock();
readBuffer((char *)&packet_size, sizeof(packet_size));
if (packet_size != 0)
{
int size = packet_size * 16;
char packet[size];
while(m_stream.buf_fill < size && isRunning())
{
m_mutex.unlock();
qApp->processEvents();
m_mutex.lock();
}
readBuffer(packet, size);
qDebug("Downloader: ICY metadata: %s", packet);
parseICYMetaData(packet);
}
m_mutex.unlock();
}
void Downloader::parseICYMetaData(char *data)
{
QString str(data);
QStringList list(str.split(";", QString::SkipEmptyParts));
foreach(QString line, list)
{
if (line.contains("StreamTitle="))
{
line = line.right(line.size() - line.indexOf("=") - 1).trimmed();
m_title = line.remove("'");
emit titleChanged ();
break;
}
}
}
