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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2015 Mark Roszko <mark.roszko@gmail.com>
* Copyright (C) 2015 KiCad Developers, see CHANGELOG.TXT for contributors.
*
* 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 3
* 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, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <kicad_curl/kicad_curl.h>
#include <kicad_curl/kicad_curl_easy.h>
#include <cstddef>
#include <exception>
#include <stdarg.h>
#include <sstream>
#include <ki_exception.h> // THROW_IO_ERROR
static size_t write_callback( void* contents, size_t size, size_t nmemb, void* userp )
{
size_t realsize = size * nmemb;
std::string* p = (std::string*) userp;
p->append( (const char*) contents, realsize );
return realsize;
}
KICAD_CURL_EASY::KICAD_CURL_EASY() :
m_headers( NULL )
{
// Call KICAD_CURL::Init() from in here everytime, but only the first time
// will incur any overhead. This strategy ensures that libcurl is never loaded
// unless it is needed.
KICAD_CURL::Init();
m_CURL = curl_easy_init();
if( !m_CURL )
{
THROW_IO_ERROR( "Unable to initialize CURL session" );
}
curl_easy_setopt( m_CURL, CURLOPT_WRITEFUNCTION, write_callback );
curl_easy_setopt( m_CURL, CURLOPT_WRITEDATA, (void*) &m_buffer );
}
KICAD_CURL_EASY::~KICAD_CURL_EASY()
{
if( m_headers )
curl_slist_free_all( m_headers );
curl_easy_cleanup( m_CURL );
}
void KICAD_CURL_EASY::Perform()
{
if( m_headers )
{
curl_easy_setopt( m_CURL, CURLOPT_HTTPHEADER, m_headers );
}
// bonus: retain worst case memory allocation, should re-use occur
m_buffer.clear();
CURLcode res = curl_easy_perform( m_CURL );
if( res != CURLE_OK )
{
std::string msg = "curl_easy_perform()=";
msg += (int)res; msg += " "; msg += GetErrorText( res ).c_str();
THROW_IO_ERROR( msg );
}
}
void KICAD_CURL_EASY::SetHeader( const std::string& aName, const std::string& aValue )
{
std::string header = aName + ':' + aValue;
m_headers = curl_slist_append( m_headers, header.c_str() );
}
template <typename T> int KICAD_CURL_EASY::setOption( int aOption, T aArg )
{
return curl_easy_setopt( m_CURL, (CURLoption)aOption, aArg );
}
const std::string KICAD_CURL_EASY::GetErrorText( int aCode )
{
return curl_easy_strerror( (CURLcode)aCode );
}
bool KICAD_CURL_EASY::SetUserAgent( const std::string& aAgent )
{
if( setOption<const char*>( CURLOPT_USERAGENT, aAgent.c_str() ) == CURLE_OK )
{
return true;
}
return false;
}
bool KICAD_CURL_EASY::SetURL( const std::string& aURL )
{
if( setOption<const char *>( CURLOPT_URL, aURL.c_str() ) == CURLE_OK )
{
return true;
}
return false;
}
bool KICAD_CURL_EASY::SetFollowRedirects( bool aFollow )
{
if( setOption<long>( CURLOPT_FOLLOWLOCATION , (aFollow ? 1 : 0) ) == CURLE_OK )
{
return true;
}
return false;
}
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