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/*
Copyright (C) 2014 Carl Hetherington <cth@carlh.net>
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <string>
#include <sstream>
#include <curl/curl.h>
#include <libcxml/cxml.h>
#include "update.h"
#include "version.h"
#define BUFFER_SIZE 1024
using std::cout;
using std::min;
using std::string;
using std::stringstream;
UpdateChecker::UpdateChecker ()
: _buffer (new char[BUFFER_SIZE])
, _offset (0)
{
}
UpdateChecker::~UpdateChecker ()
{
delete[] _buffer;
}
static size_t
write_callback_wrapper (void* data, size_t size, size_t nmemb, void* user)
{
return reinterpret_cast<UpdateChecker*>(user)->write_callback (data, size, nmemb);
}
UpdateChecker::Result
UpdateChecker::run ()
{
curl_global_init (CURL_GLOBAL_ALL);
CURL* curl = curl_easy_init ();
if (!curl) {
return MAYBE;
}
curl_easy_setopt (curl, CURLOPT_URL, "http://dcpomatic.com/update.php");
curl_easy_setopt (curl, CURLOPT_WRITEFUNCTION, write_callback_wrapper);
curl_easy_setopt (curl, CURLOPT_WRITEDATA, this);
string const agent = "dcpomatic/" + string (dcpomatic_version);
curl_easy_setopt (curl, CURLOPT_USERAGENT, agent.c_str ());
int r = curl_easy_perform (curl);
if (r != CURLE_OK) {
return MAYBE;
}
_buffer[BUFFER_SIZE-1] = '\0';
stringstream s;
s << _buffer;
cxml::Document doc ("Update");
doc.read_stream (s);
cout << doc.string_child ("Stable") << "\n";
return YES;
}
size_t
UpdateChecker::write_callback (void* data, size_t size, size_t nmemb)
{
size_t const t = min (size * nmemb, size_t (BUFFER_SIZE - _offset));
memcpy (_buffer + _offset, data, t);
_offset += t;
return t;
}
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