// Detect any proxy configuration settings automatically.
//
static void windows_detect_autoproxy_settings() {
if (log_flags.proxy_debug) {
post_sysmon_msg("[proxy] automatic proxy check in progress");
}
HINTERNET hWinHttp = NULL;
WINHTTP_AUTOPROXY_OPTIONS autoproxy_options;
WINHTTP_PROXY_INFO proxy_info;
PARSED_URL purl;
std::wstring network_test_url;
size_t pos;
memset(&autoproxy_options, 0, sizeof(autoproxy_options));
memset(&proxy_info, 0, sizeof(proxy_info));
autoproxy_options.dwFlags =
WINHTTP_AUTOPROXY_AUTO_DETECT;
autoproxy_options.dwAutoDetectFlags =
WINHTTP_AUTO_DETECT_TYPE_DHCP | WINHTTP_AUTO_DETECT_TYPE_DNS_A;
autoproxy_options.fAutoLogonIfChallenged = TRUE;
network_test_url = boinc_ascii_to_wide(nvc_config.network_test_url).c_str();
hWinHttp = WinHttpOpen(
L"BOINC client",
WINHTTP_ACCESS_TYPE_DEFAULT_PROXY,
WINHTTP_NO_PROXY_NAME,
WINHTTP_NO_PROXY_BYPASS,
NULL
);
char msg[1024], buf[1024];
safe_strcpy(msg, "[proxy] ");
if (WinHttpGetProxyForUrl(hWinHttp, network_test_url.c_str(), &autoproxy_options, &proxy_info)) {
// Apparently there are some conditions where WinHttpGetProxyForUrl can return
// success but where proxy_info.lpszProxy is null. Maybe related to UPNP?
//
// For the time being check to see if proxy_info.lpszProxy is non-null.
//
if (proxy_info.lpszProxy) {
std::string proxy(boinc_wide_to_ascii(std::wstring(proxy_info.lpszProxy)));
std::string new_proxy;
if (log_flags.proxy_debug) {
safe_strcat(msg, "proxy list: ");
safe_strcat(msg, proxy.c_str());
}
if (!proxy.empty()) {
// Trim string if more than one proxy is defined
// proxy list is defined as:
// ([<scheme>=][<scheme>"://"]<server>[":"<port>])
// Find and erase first delimeter type.
pos = proxy.find(';');
if (pos != -1 ) {
new_proxy = proxy.erase(pos);
proxy = new_proxy;
}
// Find and erase second delimeter type.
pos = proxy.find(' ');
if (pos != -1 ) {
new_proxy = proxy.erase(pos);
proxy = new_proxy;
}
// Parse the remaining url
parse_url(proxy.c_str(), purl);
// Store the results for future use.
if (0 != strcmp(working_proxy_info.autodetect_server_name, purl.host)) {
// Reset clients connection error detection path
net_status.need_physical_connection = false;
working_proxy_info.autodetect_protocol = purl.protocol;
safe_strcpy(working_proxy_info.autodetect_server_name, purl.host);
working_proxy_info.autodetect_port = purl.port;
}
if (log_flags.proxy_debug) {
snprintf(buf, sizeof(buf), "proxy detected %s:%d", purl.host, purl.port);
safe_strcat(msg, buf);
}
}
}
// Clean up
if (proxy_info.lpszProxy) GlobalFree(proxy_info.lpszProxy);
if (proxy_info.lpszProxyBypass) GlobalFree(proxy_info.lpszProxyBypass);
} else {
// We can get here if the user is switching from a network that
// requires a proxy to one that does not require a proxy.
working_proxy_info.autodetect_protocol = 0;
safe_strcpy(working_proxy_info.autodetect_server_name, "");
working_proxy_info.autodetect_port = 0;
if (log_flags.proxy_debug) {
safe_strcat(msg, "no automatic proxy detected");
}
}
if (hWinHttp) WinHttpCloseHandle(hWinHttp);
if (log_flags.proxy_debug) {
post_sysmon_msg(msg);
}
}
bool detect_cookie_ie_supported_uac(std::string& project_url, std::string& name, std::string& value)
{
static HMODULE ieframelib = NULL;
static tIEGPMC pIEGPMC = NULL;
bool bReturnValue = false;
bool bCheckDomainName = false;
HRESULT rc;
WCHAR szCookieBuffer[4096];
WCHAR* pszCookieFragment = NULL;
DWORD dwSize = sizeof(szCookieBuffer)/sizeof(WCHAR);
std::wstring strCookieFragment;
std::wstring strCookieName;
std::wstring strCookieValue;
std::string hostname;
std::wstring hostname_w;
std::string domainname;
std::wstring domainname_w;
std::wstring name_w;
std::wstring value_w;
size_t uiDelimeterLocation;
if (!ieframelib) {
ieframelib = LoadLibraryA("ieframe.dll");
if (ieframelib) {
pIEGPMC = (tIEGPMC)GetProcAddress(ieframelib, "IEGetProtectedModeCookie");
}
}
if (!pIEGPMC) {
return false;
}
// Convert name into wide character string
name_w = boinc_ascii_to_wide(name);
// if we don't find the cookie at the exact project dns name, check one higher
// (i.e. www.worldcommunitygrid.org becomes worldcommunitygrid.org
parse_hostname_ie_compatible(project_url, hostname, domainname);
// InternetGetCookie expects them in URL format
hostname_w = std::wstring(_T("http://")) + boinc_ascii_to_wide(hostname) + std::wstring(_T("/"));
domainname_w = std::wstring(_T("http://")) + boinc_ascii_to_wide(domainname) + std::wstring(_T("/"));
// First check to see if the desired cookie is assigned to the hostname.
rc = pIEGPMC(hostname_w.c_str(), NULL, szCookieBuffer, &dwSize, NULL) == TRUE;
if (!SUCCEEDED(rc) || (!wcsstr(szCookieBuffer, name_w.c_str()))) {
bCheckDomainName = true;
}
// Next check if it was assigned to the domainname.
if (bCheckDomainName) {
rc = pIEGPMC(domainname_w.c_str(), NULL, szCookieBuffer, &dwSize, NULL) == TRUE;
if (!SUCCEEDED(rc) || (!wcsstr(szCookieBuffer, name_w.c_str()))) {
return false;
}
}
// Format of cookie buffer:
// 'cookie1=value1; cookie2=value2; cookie3=value3;
//
pszCookieFragment = wcstok(szCookieBuffer, _T("; "));
while(pszCookieFragment) {
// Convert to a std::string so we can go to town
strCookieFragment = pszCookieFragment;
// Extract the name & value
uiDelimeterLocation = strCookieFragment.find(_T("="), 0);
strCookieName = strCookieFragment.substr(0, uiDelimeterLocation);
strCookieValue = strCookieFragment.substr(uiDelimeterLocation + 1);
if (0 == wcscmp(name_w.c_str(), strCookieName.c_str())) {
// Now we found it! Yea - auto attach!
value = boinc_wide_to_ascii(strCookieValue);
bReturnValue = true;
}
pszCookieFragment = wcstok(NULL, _T("; "));
}
return bReturnValue;
}
