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/*
* barrier -- mouse and keyboard sharing utility
* Copyright (C) 2014-2016 Symless Ltd.
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file LICENSE that should have accompanied this file.
*
* This package 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, see <http://www.gnu.org/licenses/>.
*/
#include "arch/win32/ArchInternetWindows.h"
#include "arch/win32/XArchWindows.h"
#include "arch/Arch.h"
#include "base/String.h"
#include "common/Version.h"
#include <sstream>
#include <Wininet.h>
#include <Shlwapi.h>
struct WinINetUrl {
std::string m_scheme;
std::string m_host;
std::string m_path;
INTERNET_PORT m_port;
DWORD m_flags;
};
class WinINetRequest {
public:
WinINetRequest(const std::string& url);
~WinINetRequest();
std::string send();
void openSession();
void connect();
void openRequest();
private:
HINTERNET m_session;
HINTERNET m_connect;
HINTERNET m_request;
WinINetUrl m_url;
bool m_used;
};
//
// ArchInternetWindows
//
std::string ArchInternetWindows::get(const std::string& url)
{
WinINetRequest request(url);
return request.send();
}
std::string ArchInternetWindows::urlEncode(const std::string& url)
{
TCHAR buffer[1024];
DWORD bufferSize = sizeof(buffer);
if (UrlEscape(url.c_str(), buffer, &bufferSize, URL_ESCAPE_UNSAFE) != S_OK) {
throw XArch(new XArchEvalWindows());
}
std::string result(buffer);
// the win32 url encoding functions are pretty useless (to us) and only
// escape "unsafe" chars, but not + or =, so we need to replace these
// manually (and probably many other chars).
barrier::string::findReplaceAll(result, "+", "%2B");
barrier::string::findReplaceAll(result, "=", "%3D");
return result;
}
//
// WinINetRequest
//
static WinINetUrl parseUrl(const std::string& url);
WinINetRequest::WinINetRequest(const std::string& url) :
m_session(NULL),
m_connect(NULL),
m_request(NULL),
m_used(false),
m_url(parseUrl(url))
{
}
WinINetRequest::~WinINetRequest()
{
if (m_request != NULL) {
InternetCloseHandle(m_request);
}
if (m_connect != NULL) {
InternetCloseHandle(m_connect);
}
if (m_session != NULL) {
InternetCloseHandle(m_session);
}
}
std::string WinINetRequest::send()
{
if (m_used) {
throw XArch("class is one time use.");
}
m_used = true;
openSession();
connect();
openRequest();
std::string headers("Content-Type: text/html");
if (!HttpSendRequest(m_request, headers.c_str(), (DWORD)headers.length(), NULL, NULL)) {
throw XArch(new XArchEvalWindows());
}
std::stringstream result;
CHAR buffer[1025];
DWORD read = 0;
while (InternetReadFile(m_request, buffer, sizeof(buffer) - 1, &read) && (read != 0)) {
buffer[read] = 0;
result << buffer;
read = 0;
}
return result.str();
}
void WinINetRequest::openSession()
{
std::stringstream userAgent;
userAgent << "Barrier ";
userAgent << kVersion;
m_session = InternetOpen(
userAgent.str().c_str(),
INTERNET_OPEN_TYPE_PRECONFIG,
NULL,
NULL,
NULL);
if (m_session == NULL) {
throw XArch(new XArchEvalWindows());
}
}
void
WinINetRequest::connect()
{
m_connect = InternetConnect(
m_session,
m_url.m_host.c_str(),
m_url.m_port,
NULL,
NULL,
INTERNET_SERVICE_HTTP,
NULL,
NULL);
if (m_connect == NULL) {
throw XArch(new XArchEvalWindows());
}
}
void
WinINetRequest::openRequest()
{
m_request = HttpOpenRequest(
m_connect,
"GET",
m_url.m_path.c_str(),
HTTP_VERSION,
NULL,
NULL,
m_url.m_flags,
NULL);
if (m_request == NULL) {
throw XArch(new XArchEvalWindows());
}
}
// nb: i tried to use InternetCrackUrl here, but couldn't quite get that to
// work. here's some (less robust) code to split the url into components.
// this works fine with simple urls, but doesn't consider the full url spec.
static WinINetUrl parseUrl(const std::string& url)
{
WinINetUrl parsed;
size_t schemeEnd = url.find("://");
size_t hostEnd = url.find('/', schemeEnd + 3);
parsed.m_scheme = url.substr(0, schemeEnd);
parsed.m_host = url.substr(schemeEnd + 3, hostEnd - (schemeEnd + 3));
parsed.m_path = url.substr(hostEnd);
parsed.m_port = INTERNET_DEFAULT_HTTP_PORT;
parsed.m_flags = 0;
if (parsed.m_scheme.find("https") != std::string::npos) {
parsed.m_port = INTERNET_DEFAULT_HTTPS_PORT;
parsed.m_flags = INTERNET_FLAG_SECURE;
}
return parsed;
}
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