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HTTP.cpp
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HTTP.cpp
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/////////////////////////////////////////
//
// OpenLieroX
//
// Auxiliary Software class library
//
// based on the work of JasonB
// enhanced by Dark Charlie and Albert Zeyer
//
// code under LGPL
//
/////////////////////////////////////////
// HTTP class implementation
// Created 9/4/02
// Jason Boettcher
#include <cassert>
#ifdef WIN32
#include <windows.h>
#include <wininet.h>
#else
#include <stdlib.h>
#endif
#include <curl/curl.h>
#include <curl/easy.h>
#include "LieroX.h"
#include "Debug.h"
#include "Options.h"
#include "HTTP.h"
#include "Timer.h"
#include "StringUtils.h"
#include "olx-types.h"
#include "Version.h"
#include "MathLib.h"
#include "InputEvents.h"
#include "ReadWriteLock.h"
// Some basic defines
#define HTTP_TIMEOUT 10 // Filebase became laggy lately, so increased that from 5 seconds
//#define BUFFER_LEN 8192
//
// Functions
//
/////////////////
// Automatically updates tLXOptions->sHttpProxy with proxy settings retrieved from the system
void AutoSetupHTTPProxy()
{
// User doesn't wish an automatic proxy setup
if (!tLXOptions->bAutoSetupHttpProxy) {
notes << "AutoSetupHTTPProxy is disabled, ";
if(tLXOptions->sHttpProxy != "")
notes << "using proxy " << tLXOptions->sHttpProxy << endl;
else
notes << "not using any proxy" << endl;
return;
}
if(tLXOptions->sHttpProxy != "") {
notes << "AutoSetupHTTPProxy: we had the proxy " << tLXOptions->sHttpProxy << " but we are trying to autodetect it now" << endl;
}
// DevCpp won't compile this - too old header files
#if defined( WIN32 ) && defined( MSC_VER )
// Create the list of options we want to retrieve
INTERNET_PER_CONN_OPTION_LIST List;
INTERNET_PER_CONN_OPTION Options[2];
DWORD size = sizeof(INTERNET_PER_CONN_OPTION_LIST);
// Options we need
Options[0].dwOption = INTERNET_PER_CONN_PROXY_SERVER;
Options[1].dwOption = INTERNET_PER_CONN_FLAGS;
// Fill the list info
List.dwSize = sizeof(INTERNET_PER_CONN_OPTION_LIST);
List.pszConnection = NULL;
List.dwOptionCount = 2;
List.dwOptionError = 0;
List.pOptions = Options;
// Ask for proxy info
if(InternetQueryOption(NULL, INTERNET_OPTION_PER_CONNECTION_OPTION, &List, &size)) {
// Using proxy?
bool using_proxy = (Options[1].Value.dwValue & PROXY_TYPE_PROXY) == PROXY_TYPE_PROXY;
if (using_proxy) {
if (Options[0].Value.pszValue != NULL) { // Safety check
tLXOptions->sHttpProxy = Options[0].Value.pszValue; // Set the proxy
// Remove http:// if present
static const size_t httplen = 7; // length of "http://"
if( stringcaseequal(tLXOptions->sHttpProxy.substr(0, httplen), "http://") )
tLXOptions->sHttpProxy.erase(0, httplen);
// Remove trailing slash
if (*tLXOptions->sHttpProxy.rbegin() == '/')
tLXOptions->sHttpProxy.resize(tLXOptions->sHttpProxy.size() - 1);
notes << "Using HTTP proxy: " << tLXOptions->sHttpProxy << endl;
}
} else {
tLXOptions->sHttpProxy = ""; // No proxy
}
// Cleanup
if(Options[0].Value.pszValue != NULL)
GlobalFree(Options[0].Value.pszValue);
}
#else
// Linux has numerous configuration of proxies for each application, but environment var seems to be the most common
const char * c_proxy = getenv("http_proxy");
if( c_proxy == NULL ) {
c_proxy = getenv("HTTP_PROXY");
}
if(c_proxy) {
// Get the value (string after '=' char)
std::string proxy(c_proxy);
if( proxy.find('=') == std::string::npos ) { // No proxy
tLXOptions->sHttpProxy = "";
return;
}
proxy = proxy.substr( proxy.find('=') + 1 );
TrimSpaces(proxy);
// Remove http:// if present
static const size_t httplen = 7; // length of "http://"
if( stringcaseequal(proxy.substr(0, httplen), "http://") )
proxy.erase(0, httplen);
// Blank proxy?
if( proxy != "" ) {
// Remove trailing slash
if( *proxy.rbegin() == '/')
proxy.resize( proxy.size() - 1 );
}
tLXOptions->sHttpProxy = proxy;
notes << "AutoSetupHTTPProxy: " << proxy << endl;
}
#endif
}
struct CurlThread : Action {
CurlThread( CHttp * parent, CURL * _curl ) :
parent( parent ),
curl( _curl ),
curlForm( NULL )
{
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, CurlReceiveCallback);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)this);
//curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 0);
//curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, CurlProgressCallback);
//curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, (void *)this);
}
int handle();
CHttp * parent;
CURL * curl;
curl_httppost * curlForm;
Mutex Lock;
static size_t CurlReceiveCallback(void *ptr, size_t size, size_t nmemb, void *data);
//static int CurlProgressCallback(void *clientp, double dltotal, double dlnow, double ultotal, double ulnow);
};
CHttp::CHttp()
{
ProcessingResult = HTTP_PROC_FINISHED;
DownloadStart = DownloadEnd = 0;
curlThread = NULL;
}
CHttp::~CHttp()
{
CancelProcessing();
}
size_t CurlThread::CurlReceiveCallback(void *ptr, size_t size, size_t nmemb, void *data)
{
CurlThread* self = (CurlThread *)data;
size_t realsize = size * nmemb;
Mutex::ScopedLock l(self->Lock);
if( !self->parent ) // Aborting
return 0;
Mutex::ScopedLock l1(self->parent->Lock);
self->parent->Data.append((const char *)ptr, realsize);
return realsize;
}
/*
int CurlThread::CurlProgressCallback(void *clientp, double dltotal, double dlnow, double ultotal, double ulnow) {
CurlThread* self = (CurlThread *)clientp;
Mutex::ScopedLock l(self->Lock);
if( !self->parent ) // Aborting
return 0;
return 1;
}
*/
CURL * CHttp::InitializeTransfer(const std::string& url, const std::string& proxy)
{
CancelProcessing();
ProcessingResult = HTTP_PROC_PROCESSING;
Url = url;
Proxy = proxy;
Useragent = GetFullGameName();
Data = "";
DownloadStart = DownloadEnd = tLX->currentTime;
CURL * curl = curl_easy_init();
curl_easy_setopt( curl, CURLOPT_URL, Url.c_str() );
curl_easy_setopt( curl, CURLOPT_PROXY, Proxy.c_str() );
curl_easy_setopt( curl, CURLOPT_USERAGENT, Useragent.c_str() );
curl_easy_setopt( curl, CURLOPT_NOSIGNAL, (long) 1 );
curl_easy_setopt( curl, CURLOPT_CONNECTTIMEOUT, (long) HTTP_TIMEOUT );
curl_easy_setopt( curl, CURLOPT_FOLLOWLOCATION, (long) 1 ); // Allow server to use 3XX Redirect codes
curl_easy_setopt( curl, CURLOPT_MAXREDIRS, (long) 25 ); // Some reasonable limit
//curl_easy_setopt( curl, CURLOPT_TIMEOUT, (long) HTTP_TIMEOUT ); // Do not set this if you don't want abort in the middle of large transfer
return curl;
}
void CHttp::RequestData(const std::string& url, const std::string& proxy)
{
CURL * curl = InitializeTransfer(url, proxy);
curlThread = new CurlThread(this, curl);
threadPool->start(curlThread, "CHttp: " + Url, true);
}
void CHttp::SendData(const std::list<HTTPPostField>& data, const std::string url, const std::string& proxy)
{
CURL * curl = InitializeTransfer(url, proxy);
curl_httppost * curlForm = NULL;
struct curl_httppost *lastptr = NULL;
for( std::list<HTTPPostField> :: const_iterator it = data.begin(); it != data.end(); it++ )
{
if( it->getFileName() == "" )
curl_formadd( &curlForm,
&lastptr,
CURLFORM_COPYNAME, it->getName().c_str(),
CURLFORM_CONTENTSLENGTH, it->getData().size(),
CURLFORM_COPYCONTENTS, it->getData().c_str(),
CURLFORM_END);
else
curl_formadd( &curlForm,
&lastptr,
CURLFORM_COPYNAME, it->getName().c_str(),
CURLFORM_FILENAME, it->getFileName().c_str(),
CURLFORM_CONTENTTYPE, it->getMimeType().c_str(),
CURLFORM_CONTENTSLENGTH, it->getData().size(),
CURLFORM_COPYCONTENTS, it->getData().c_str(),
CURLFORM_END);
}
curl_easy_setopt(curl, CURLOPT_HTTPPOST, curlForm);
curlThread = new CurlThread(this, curl);
curlThread->curlForm = curlForm;
threadPool->start(curlThread, "CHttp: " + Url, true);
}
int CurlThread::handle()
{
CURLcode res = curl_easy_perform(curl); // Blocks until processing finished
Mutex::ScopedLock l(Lock);
if( parent != NULL )
{
Mutex::ScopedLock l1(parent->Lock);
parent->curlThread = NULL;
parent->ProcessingResult = HTTP_PROC_FINISHED;
parent->Error.iError = HTTP_NO_ERROR;
if( res != CURLE_OK )
{
parent->ProcessingResult = HTTP_PROC_ERROR;
parent->Error.iError = res; // This is not HTTP error, it's libcurl error, but whatever
parent->Error.sErrorMsg = curl_easy_strerror(res);
}
parent->DownloadEnd = tLX->currentTime;
if( curlForm != NULL )
curl_formfree(curlForm);
curlForm = NULL;
parent->onFinished.occurred(CHttp::HttpEventData(parent, parent->ProcessingResult == HTTP_PROC_FINISHED));
parent = NULL;
}
curl_easy_cleanup(curl);
return 0;
}
void CHttp::CancelProcessing() // Non-blocking
{
Mutex::ScopedLock l(Lock);
if(curlThread != NULL)
{
Mutex::ScopedLock l(curlThread->Lock);
curlThread->parent = NULL;
curlThread = NULL;
}
}
size_t CHttp::GetDataLength() const
{
Mutex::ScopedLock l(const_cast<Mutex &>(Lock));
return Data.size();
}
std::string CHttp::GetMimeType() const
{
Mutex::ScopedLock l(const_cast<Mutex &>(Lock));
if( !curlThread )
return "";
Mutex::ScopedLock l1(curlThread->Lock);
const char * c = NULL;
curl_easy_getinfo(curlThread->curl, CURLINFO_CONTENT_TYPE, c);
std::string ret;
if( c != NULL )
ret = c;
return ret;
}
float CHttp::GetDownloadSpeed() const
{
Mutex::ScopedLock l(const_cast<Mutex &>(Lock));
if( !curlThread )
return 0;
Mutex::ScopedLock l1(curlThread->Lock);
double d = 0;
curl_easy_getinfo(curlThread->curl, CURLINFO_SPEED_DOWNLOAD, &d);
return float(d);
}
float CHttp::GetUploadSpeed() const
{
Mutex::ScopedLock l(const_cast<Mutex &>(Lock));
double d = 0;
if( !curlThread )
return 0;
Mutex::ScopedLock l1(curlThread->Lock);
curl_easy_getinfo(curlThread->curl, CURLINFO_SPEED_UPLOAD, &d);
return float(d);
}
std::string CHttp::GetHostName() const
{
std::string sHost;
size_t s = 0;
if( Url.find("http://") != std::string::npos )
s = Url.find("http://") + 7;
size_t p = Url.find("/", s );
if(p == std::string::npos)
sHost = Url.substr(s);
else
sHost = Url.substr(s, p-s);
return sHost;
}
size_t CHttp::GetDataToSendLength() const
{
Mutex::ScopedLock l(const_cast<Mutex &>(Lock));
double d = 0;
if( !curlThread )
return 0;
Mutex::ScopedLock l1(curlThread->Lock);
curl_easy_getinfo(curlThread->curl, CURLINFO_CONTENT_LENGTH_UPLOAD, &d);
if( d <= 0 )
d = 1;
return (size_t)d;
};
size_t CHttp::GetSentDataLen() const
{
Mutex::ScopedLock l(const_cast<Mutex &>(Lock));
double d = 0, total = 0;
if( !curlThread )
return 0;
Mutex::ScopedLock l1(curlThread->Lock);
curl_easy_getinfo(curlThread->curl, CURLINFO_CONTENT_LENGTH_UPLOAD, &total);
curl_easy_getinfo(curlThread->curl, CURLINFO_SIZE_UPLOAD, &d);
if( d > total )
d = total;
if( d <= 0 )
d = 1;
return (size_t)d;
};