bool Proxy::ParseWinHttpProxy(LPWSTR lpszProxy, Address &addr)
{
Assert(lpszProxy);
String proxy(lpszProxy, lpszProxy + std::char_traits<wchar_t>::length(lpszProxy));
proxy.toLower();
size_t pos = proxy.find("http://");
if(pos != String::NotFound) proxy = proxy.substr(pos + 7);
else {
pos = proxy.find("http=");
if(pos != String::NotFound) proxy = proxy.substr(pos + 5);
}
proxy.cut('/'); proxy.cut(','); proxy.cut(' ');
if(!proxy.empty())
{
try {
addr.fromString(proxy);
return true;
}
catch(...)
{
LogDebug("Proxy::ParseWinHtppProxy", "Got invalid proxy address: " + proxy);
}
}
return false;
}
bool Proxy::GetProxyForUrl(const String &url, Address &addr)
{
if(HttpProxy == "none")
return false;
if(!HttpProxy.empty() && HttpProxy != "auto")
{
addr.fromString(HttpProxy);
return true;
}
#ifdef WINDOWS
typedef LPVOID HINTERNET;
typedef struct {
DWORD dwAccessType;
LPWSTR lpszProxy;
LPWSTR lpszProxyBypass;
} WINHTTP_PROXY_INFO;
typedef struct {
BOOL fAutoDetect;
LPWSTR lpszAutoConfigUrl;
LPWSTR lpszProxy;
LPWSTR lpszProxyBypass;
} WINHTTP_CURRENT_USER_IE_PROXY_CONFIG;
typedef struct {
DWORD dwFlags;
DWORD dwAutoDetectFlags;
LPCWSTR lpszAutoConfigUrl;
LPVOID lpvReserved;
DWORD dwReserved;
BOOL fAutoLogonIfChallenged;
} WINHTTP_AUTOPROXY_OPTIONS;
#define WINHTTP_ACCESS_TYPE_DEFAULT_PROXY 0
#define WINHTTP_ACCESS_TYPE_NO_PROXY 1
#define WINHTTP_ACCESS_TYPE_NAMED_PROXY 3
#define WINHTTP_AUTOPROXY_AUTO_DETECT 0x00000001
#define WINHTTP_AUTOPROXY_CONFIG_URL 0x00000002
#define WINHTTP_AUTO_DETECT_TYPE_DHCP 0x00000001
#define WINHTTP_AUTO_DETECT_TYPE_DNS_A 0x00000002
#define WINHTTP_ERROR_BASE 12000
#define ERROR_WINHTTP_LOGIN_FAILURE (WINHTTP_ERROR_BASE + 15)
#define ERROR_WINHTTP_AUTODETECTION_FAILED (WINHTTP_ERROR_BASE + 180)
typedef HINTERNET (WINAPI *WINHTTPOPEN)(LPCWSTR pwszUserAgent, DWORD dwAccessType, LPCWSTR pwszProxyName, LPCWSTR pwszProxyBypass, DWORD dwFlags);
typedef BOOL (WINAPI *WINHTTPGETPROXYFORURL)(HINTERNET hSession, LPCWSTR lpcwszUrl, WINHTTP_AUTOPROXY_OPTIONS *pAutoProxyOptions, WINHTTP_PROXY_INFO *pProxyInfo);
typedef BOOL (WINAPI *WINHTTPGETDEFAULTPROXYCONFIGURATION)(WINHTTP_PROXY_INFO *pProxyInfo);
typedef BOOL (WINAPI *WINHTTPGETIEPROXYCONFIGFORCURRENTUSER)(WINHTTP_CURRENT_USER_IE_PROXY_CONFIG *pProxyConfig);
typedef BOOL (WINAPI *WINHTTPCLOSEHANDLE)(HINTERNET hInternet);
static HMODULE hWinHttp = NULL;
static WINHTTPOPEN WinHttpOpen;
static WINHTTPGETPROXYFORURL WinHttpGetProxyForUrl;
static WINHTTPGETDEFAULTPROXYCONFIGURATION WinHttpGetDefaultProxyConfiguration;
static WINHTTPGETIEPROXYCONFIGFORCURRENTUSER WinHttpGetIEProxyConfigForCurrentUser;
static WINHTTPCLOSEHANDLE WinHttpCloseHandle;
if(!hWinHttp)
{
hWinHttp = LoadLibrary("winhttp.dll");
if(!hWinHttp) return false;
WinHttpOpen = (WINHTTPOPEN) GetProcAddress(hWinHttp, "WinHttpOpen");
WinHttpGetProxyForUrl = (WINHTTPGETPROXYFORURL) GetProcAddress(hWinHttp, "WinHttpGetProxyForUrl");
WinHttpGetDefaultProxyConfiguration = (WINHTTPGETDEFAULTPROXYCONFIGURATION) GetProcAddress(hWinHttp, "WinHttpGetDefaultProxyConfiguration");
WinHttpGetIEProxyConfigForCurrentUser = (WINHTTPGETIEPROXYCONFIGFORCURRENTUSER) GetProcAddress(hWinHttp, "WinHttpGetIEProxyConfigForCurrentUser");
WinHttpCloseHandle = (WINHTTPCLOSEHANDLE) GetProcAddress(hWinHttp, "WinHttpCloseHandle");
}
bool hasProxy = false;
std::string ua(Http::UserAgent);
std::wstring wua(ua.begin(), ua.end());
HINTERNET hSession = WinHttpOpen(wua.c_str(), WINHTTP_ACCESS_TYPE_DEFAULT_PROXY, NULL, NULL, 0);
if(hSession)
{
WINHTTP_CURRENT_USER_IE_PROXY_CONFIG userProxyConfig;
bool hasUserProxyConfig = (WinHttpGetIEProxyConfigForCurrentUser(&userProxyConfig) == TRUE);
if(hasUserProxyConfig && !userProxyConfig.fAutoDetect && userProxyConfig.lpszProxy)
{
hasProxy = ParseWinHttpProxy(userProxyConfig.lpszProxy, addr);
}
else {
WINHTTP_AUTOPROXY_OPTIONS autoProxyOptions;
std::memset(&autoProxyOptions, 0, sizeof(autoProxyOptions));
autoProxyOptions.fAutoLogonIfChallenged = TRUE;
if(hasUserProxyConfig) autoProxyOptions.lpszAutoConfigUrl = userProxyConfig.lpszAutoConfigUrl;
else autoProxyOptions.lpszAutoConfigUrl = NULL;
if(autoProxyOptions.lpszAutoConfigUrl)
{
autoProxyOptions.dwFlags = WINHTTP_AUTOPROXY_AUTO_DETECT;
autoProxyOptions.dwAutoDetectFlags = WINHTTP_AUTO_DETECT_TYPE_DHCP|WINHTTP_AUTO_DETECT_TYPE_DNS_A;
}
else {
autoProxyOptions.dwFlags = WINHTTP_AUTOPROXY_CONFIG_URL;
autoProxyOptions.dwAutoDetectFlags = 0;
}
WINHTTP_PROXY_INFO proxyInfo;
std::wstring wurl(url.begin(), url.end());
if(WinHttpGetProxyForUrl(hSession, wurl.c_str(), &autoProxyOptions, &proxyInfo))
{
if(proxyInfo.lpszProxy && proxyInfo.dwAccessType == WINHTTP_ACCESS_TYPE_NAMED_PROXY)
hasProxy = ParseWinHttpProxy(proxyInfo.lpszProxy, addr);
if(proxyInfo.lpszProxy) GlobalFree(proxyInfo.lpszProxy);
if(proxyInfo.lpszProxyBypass) GlobalFree(proxyInfo.lpszProxyBypass);
}
else if(WinHttpGetDefaultProxyConfiguration(&proxyInfo))
{
if(proxyInfo.lpszProxy && proxyInfo.dwAccessType == WINHTTP_ACCESS_TYPE_NAMED_PROXY)
hasProxy = ParseWinHttpProxy(proxyInfo.lpszProxy, addr);
if(proxyInfo.lpszProxy) GlobalFree(proxyInfo.lpszProxy);
if(proxyInfo.lpszProxyBypass) GlobalFree(proxyInfo.lpszProxyBypass);
}
}
if(hasUserProxyConfig)
{
if(userProxyConfig.lpszProxy) GlobalFree(userProxyConfig.lpszProxy);
if(userProxyConfig.lpszProxyBypass) GlobalFree(userProxyConfig.lpszProxyBypass);
if(userProxyConfig.lpszAutoConfigUrl) GlobalFree(userProxyConfig.lpszAutoConfigUrl);
}
WinHttpCloseHandle(hSession);
}
return hasProxy;
#else
// TODO
return false;
#endif
}
