winutil.cpp

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	// check for the existence of magnet.exe
	if(File::getSize(Text::fromT(magnetExe)) == -1) {
		magnetExe = Text::toT(Util::getAppPath() + "magnet.exe");
		if(File::getSize(Text::fromT(magnetExe)) == -1) {
			// gracefully fall back to registering DC++ to handle magnets
			magnetExe = Text::toT(Util::getAppName());
			haveMagnet = false;
		} else {
			// set Magnet\Location
			if (::RegCreateKeyEx(HKEY_LOCAL_MACHINE, _T("SOFTWARE\\Magnet"), 0, NULL, REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hk, NULL))  {
				LogManager::getInstance()->message(STRING(ERROR_CREATING_REGISTRY_KEY_MAGNET));
				return;
			}

			::RegSetValueEx(hk, _T("Location"), NULL, REG_SZ, (LPBYTE)magnetExe.c_str(), sizeof(TCHAR) * (magnetExe.length()+1));
			::RegCloseKey(hk);
		}
		magnetLoc = _T('"') + magnetExe + _T('"');
	}
	// (re)register the handler if magnet.exe isn't the default, or if DC++ is handling it
	if(BOOLSETTING(MAGNET_REGISTER) && (Util::strnicmp(openCmd, magnetLoc, magnetLoc.size()) != 0 || !haveMagnet)) {
		SHDeleteKey(HKEY_CLASSES_ROOT, _T("magnet"));
		if (::RegCreateKeyEx(HKEY_CLASSES_ROOT, _T("magnet"), 0, NULL, REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hk, NULL))  {
			LogManager::getInstance()->message(STRING(ERROR_CREATING_REGISTRY_KEY_MAGNET));
			return;
		}
		::RegSetValueEx(hk, NULL, NULL, REG_SZ, (LPBYTE)CTSTRING(MAGNET_SHELL_DESC), sizeof(TCHAR)*(TSTRING(MAGNET_SHELL_DESC).length()+1));
		::RegSetValueEx(hk, _T("URL Protocol"), NULL, REG_SZ, NULL, NULL);
		::RegCloseKey(hk);
		::RegCreateKeyEx(HKEY_CLASSES_ROOT, _T("magnet\\DefaultIcon"), 0, NULL, REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hk, NULL);
		::RegSetValueEx(hk, NULL, NULL, REG_SZ, (LPBYTE)magnetLoc.c_str(), sizeof(TCHAR)*(magnetLoc.length()+1));
		::RegCloseKey(hk);
		magnetLoc += _T(" %1");
		::RegCreateKeyEx(HKEY_CLASSES_ROOT, _T("magnet\\shell\\open\\command"), 0, NULL, REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hk, NULL);
		::RegSetValueEx(hk, NULL, NULL, REG_SZ, (LPBYTE)magnetLoc.c_str(), sizeof(TCHAR)*(magnetLoc.length()+1));
		::RegCloseKey(hk);
	}
	// magnet-handler specific code
	// clean out the DC++ tree first
	SHDeleteKey(HKEY_LOCAL_MACHINE, _T("SOFTWARE\\Magnet\\Handlers\\DC++"));
	// add DC++ to magnet-handler's list of applications
	::RegCreateKeyEx(HKEY_LOCAL_MACHINE, _T("SOFTWARE\\Magnet\\Handlers\\DC++"), 0, NULL, REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hk, NULL);
	::RegSetValueEx(hk, NULL, NULL, REG_SZ, (LPBYTE)CTSTRING(MAGNET_HANDLER_ROOT), sizeof(TCHAR) * (TSTRING(MAGNET_HANDLER_ROOT).size()+1));
	::RegSetValueEx(hk, _T("Description"), NULL, REG_SZ, (LPBYTE)CTSTRING(MAGNET_HANDLER_DESC), sizeof(TCHAR) * (STRING(MAGNET_HANDLER_DESC).size()+1));
	// set ShellExecute
	tstring app = Text::toT("\"" + Util::getAppName() + "\" %URL");
	::RegSetValueEx(hk, _T("ShellExecute"), NULL, REG_SZ, (LPBYTE)app.c_str(), sizeof(TCHAR) * (app.length()+1));
	// set DefaultIcon
	app = Text::toT('"' + Util::getAppName() + '"');
	::RegSetValueEx(hk, _T("DefaultIcon"), NULL, REG_SZ, (LPBYTE)app.c_str(), sizeof(TCHAR)*(app.length()+1));
	::RegCloseKey(hk);

	// These two types contain a tth root, and are in common use.  The other two are variations picked up
	// from Shareaza's source, which come second hand from Gordon Mohr.  -GargoyleMT
	// Reference: http://forums.shareaza.com/showthread.php?threadid=23731
	// Note: the three part hash types require magnethandler >= 1.0.0.3
	DWORD nothing = 0;
	::RegCreateKeyEx(HKEY_LOCAL_MACHINE, _T("SOFTWARE\\Magnet\\Handlers\\DC++\\Type"), 0, NULL, REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hk, NULL);
	::RegSetValueEx(hk, _T("urn:bitprint"), NULL, REG_DWORD, (LPBYTE)&nothing, sizeof(nothing));
	::RegSetValueEx(hk, _T("urn:tree:tiger"), NULL, REG_DWORD, (LPBYTE)&nothing, sizeof(nothing));
	::RegSetValueEx(hk, _T("urn:tree:tiger/"), NULL, REG_DWORD, (LPBYTE)&nothing, sizeof(nothing));
	::RegSetValueEx(hk, _T("urn:tree:tiger/1024"), NULL, REG_DWORD, (LPBYTE)&nothing, sizeof(nothing));
	::RegCloseKey(hk);
}

void WinUtil::unRegisterMagnetHandler() {
	SHDeleteKey(HKEY_CLASSES_ROOT, _T("magnet"));
	SHDeleteKey(HKEY_LOCAL_MACHINE, _T("magnet"));
}

void WinUtil::openLink(const tstring& url) {
	CRegKey key;
	TCHAR regbuf[MAX_PATH];
	ULONG len = MAX_PATH;
	tstring x;

	tstring::size_type i = url.find(_T("://"));
	if(i != string::npos) {
		x = url.substr(0, i);
	} else {
		x = _T("http");
	}
	x += _T("\\shell\\open\\command");
	if(key.Open(HKEY_CLASSES_ROOT, x.c_str(), KEY_READ) == ERROR_SUCCESS) {
		if(key.QueryStringValue(NULL, regbuf, &len) == ERROR_SUCCESS) {
			/*
			 * Various values (for http handlers):
			 *  C:\PROGRA~1\MOZILL~1\FIREFOX.EXE -url "%1"
			 *  "C:\Program Files\Internet Explorer\iexplore.exe" -nohome
			 *  "C:\Apps\Opera7\opera.exe"
			 *  C:\PROGRAMY\MOZILLA\MOZILLA.EXE -url "%1"
			 *  C:\PROGRA~1\NETSCAPE\NETSCAPE\NETSCP.EXE -url "%1"
			 */
			tstring cmd(regbuf); // otherwise you consistently get two trailing nulls
			
			if(cmd.length() > 1) {
				string::size_type start,end;
				if(cmd[0] == '"') {
					start = 1;
					end = cmd.find('"', 1);
				} else {
					start = 0;
					end = cmd.find(' ', 1);
				}
				if(end == string::npos)
					end = cmd.length();

				tstring cmdLine(cmd);
				cmd = cmd.substr(start, end-start);
				size_t arg_pos;
				if((arg_pos = cmdLine.find(_T("%1"))) != string::npos) {
					cmdLine.replace(arg_pos, 2, url);
				} else {
					cmdLine.append(_T(" \"") + url + _T('\"'));
				}

				STARTUPINFO si = { sizeof(si), 0 };
				PROCESS_INFORMATION pi = { 0 };
				AutoArray<TCHAR> buf(cmdLine.length() + 1);
				_tcscpy(buf, cmdLine.c_str());
				if(::CreateProcess(cmd.c_str(), buf, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi)) {
					::CloseHandle(pi.hThread);
					::CloseHandle(pi.hProcess);
					return;
				}
			}
		}
	}

	::ShellExecute(NULL, NULL, url.c_str(), NULL, NULL, SW_SHOWNORMAL);
}

void WinUtil::parseDchubUrl(const tstring& aUrl) {
	string server, file;
	u_int16_t port = 411;
	Util::decodeUrl(Text::fromT(aUrl), server, port, file);
	if(!server.empty()) {
		HubFrame::openWindow(Text::toT(server + ":" + Util::toString(port)));
	}
	if(!file.empty()) {
		if(file[0] == '/') // Remove any '/' in from of the file
			file = file.substr(1);
		try {
			User::Ptr user = ClientManager::getInstance()->findLegacyUser(file);
			if(user)
				QueueManager::getInstance()->addList(user, QueueItem::FLAG_CLIENT_VIEW);
			// @todo else report error
		} catch(const Exception&) {
			// ...
		}
	}
}

void WinUtil::parseADChubUrl(const tstring& aUrl) {
	string server, file;
	u_int16_t port = 0; //make sure we get a port since adc doesn't have a standard one
	Util::decodeUrl(Text::fromT(aUrl), server, port, file);
	if(!server.empty() && port > 0) {
		HubFrame::openWindow(Text::toT("adc://" + server + ":" + Util::toString(port)));
	}
}

void WinUtil::parseMagnetUri(const tstring& aUrl, bool /*aOverride*/) {
	// official types that are of interest to us
	//  xt = exact topic
	//  xs = exact substitute
	//  as = acceptable substitute
	//  dn = display name
	if (Util::strnicmp(aUrl.c_str(), _T("magnet:?"), 8) == 0) {
		LogManager::getInstance()->message(STRING(MAGNET_DLG_TITLE) + ": " + Text::fromT(aUrl));
		StringTokenizer<tstring> mag(aUrl.substr(8), _T('&'));
		typedef map<tstring, tstring> MagMap;
		MagMap hashes;
		tstring fname, fhash, type, param;
		for(TStringList::iterator idx = mag.getTokens().begin(); idx != mag.getTokens().end(); ++idx) {
			// break into pairs
			string::size_type pos = idx->find(_T('='));
			if(pos != string::npos) {
				type = Text::toT(Text::toLower(Util::encodeURI(Text::fromT(idx->substr(0, pos)), true)));
				param = Text::toT(Util::encodeURI(Text::fromT(idx->substr(pos+1)), true));
			} else {
				type = Text::toT(Util::encodeURI(Text::fromT(*idx), true));
				param.clear();
			}
			// extract what is of value
			if(param.length() == 85 && Util::strnicmp(param.c_str(), _T("urn:bitprint:"), 13) == 0) {
				hashes[type] = param.substr(46);
			} else if(param.length() == 54 && Util::strnicmp(param.c_str(), _T("urn:tree:tiger:"), 15) == 0) {
				hashes[type] = param.substr(15);
			} else if(param.length() == 55 && Util::strnicmp(param.c_str(), _T("urn:tree:tiger/:"), 16) == 0) {
				hashes[type] = param.substr(16);
			} else if(param.length() == 59 && Util::strnicmp(param.c_str(), _T("urn:tree:tiger/1024:"), 20) == 0) {
				hashes[type] = param.substr(20);
			} else if(type.length() == 2 && Util::strnicmp(type.c_str(), _T("dn"), 2) == 0) {
				fname = param;
			}
		}
		// pick the most authoritative hash out of all of them.
		if(hashes.find(_T("as")) != hashes.end()) {
			fhash = hashes[_T("as")];
		}
		if(hashes.find(_T("xs")) != hashes.end()) {
			fhash = hashes[_T("xs")];
		}
		if(hashes.find(_T("xt")) != hashes.end()) {
			fhash = hashes[_T("xt")];
		}
		if(!fhash.empty()){
			// ok, we have a hash, and maybe a filename.
			//if(!BOOLSETTING(MAGNET_ASK)) {
			//	switch(SETTING(MAGNET_ACTION)) {
			//		case SettingsManager::MAGNET_AUTO_DOWNLOAD:
			//			break;
			//		case SettingsManager::MAGNET_AUTO_SEARCH:
			//			SearchFrame::openWindow(fhash, 0, SearchManager::SIZE_DONTCARE, SearchManager::TYPE_HASH);
			//			break;
			//	};
			//} else {
			// use aOverride to force the display of the dialog.  used for auto-updating
				MagnetDlg dlg(fhash, fname);
				dlg.DoModal(mainWnd);
			//}
		} else {
			MessageBox(mainWnd, CTSTRING(MAGNET_DLG_TEXT_BAD), CTSTRING(MAGNET_DLG_TITLE), MB_OK | MB_ICONEXCLAMATION);
		}
	}
}

int WinUtil::textUnderCursor(POINT p, CEdit& ctrl, tstring& x) {
	
	int i = ctrl.CharFromPos(p);
	int line = ctrl.LineFromChar(i);
	int c = LOWORD(i) - ctrl.LineIndex(line);
	int len = ctrl.LineLength(i) + 1;
	if(len < 3) {
		return 0;
	}

	AutoArray<TCHAR> buf(len);
	ctrl.GetLine(line, buf, len);
	x = tstring(buf, len-1);

	string::size_type start = x.find_last_of(_T(" <\t\r\n"), c);
	if(start == string::npos)
		start = 0;
	else
		start++;

	return start;
}

bool WinUtil::parseDBLClick(const tstring& aString, string::size_type start, string::size_type end) {
	if( (Util::strnicmp(aString.c_str() + start, _T("http://"), 7) == 0) || 
		(Util::strnicmp(aString.c_str() + start, _T("www."), 4) == 0) ||
		(Util::strnicmp(aString.c_str() + start, _T("ftp://"), 6) == 0) ||
		(Util::strnicmp(aString.c_str() + start, _T("irc://"), 6) == 0) ||
		(Util::strnicmp(aString.c_str() + start, _T("https://"), 8) == 0) ||	
		(Util::strnicmp(aString.c_str() + start, _T("mailto:"), 7) == 0) )
	{

		openLink(aString.substr(start, end-start));
		return true;
	} else if(Util::strnicmp(aString.c_str() + start, _T("dchub://"), 8) == 0) {
		parseDchubUrl(aString.substr(start, end-start));
		return true;
	} else if(Util::strnicmp(aString.c_str() + start, _T("magnet:?"), 8) == 0) {
		parseMagnetUri(aString.substr(start, end-start));
		return true;
	} else if(Util::strnicmp(aString.c_str() + start, _T("adc://"), 6) == 0) {
		parseADChubUrl(aString.substr(start, end-start));
		return true;
	}
	return false;
}

void WinUtil::saveHeaderOrder(CListViewCtrl& ctrl, SettingsManager::StrSetting order, 
							  SettingsManager::StrSetting widths, int n, 
							  int* indexes, int* sizes) throw() {
	string tmp;

	ctrl.GetColumnOrderArray(n, indexes);
	int i;
	for(i = 0; i < n; ++i) {
		tmp += Util::toString(indexes[i]);
		tmp += ',';
	}
	tmp.erase(tmp.size()-1, 1);
	SettingsManager::getInstance()->set(order, tmp);
	tmp.clear();
	for(i = 0; i < n; ++i) {
		sizes[i] = ctrl.GetColumnWidth(i);
		tmp += Util::toString(sizes[i]);
		tmp += ',';
	}
	tmp.erase(tmp.size()-1, 1);
	SettingsManager::getInstance()->set(widths, tmp);
}

int WinUtil::getIconIndex(const tstring& aFileName) {
	if(BOOLSETTING(USE_SYSTEM_ICONS)) {
		SHFILEINFO fi;
		string x = Text::toLower(Util::getFileExt(Text::fromT(aFileName)));
		if(!x.empty()) {
			ImageIter j = fileIndexes.find(x);
			if(j != fileIndexes.end())
				return j->second;
		}
		tstring fn = Text::toT(Text::toLower(Util::getFileName(Text::fromT(aFileName))));
		::SHGetFileInfo(fn.c_str(), FILE_ATTRIBUTE_NORMAL, &fi, sizeof(fi), SHGFI_ICON | SHGFI_SMALLICON | SHGFI_USEFILEATTRIBUTES);
		fileImages.AddIcon(fi.hIcon);
		::DestroyIcon(fi.hIcon);

		fileIndexes[x] = fileImageCount++;
		return fileImageCount - 1;
	} else {
		return 2;
	}
}

int WinUtil::getOsMajor() {
	OSVERSIONINFOEX ver;
	memset(&ver, 0, sizeof(OSVERSIONINFOEX));
	if(!GetVersionEx((OSVERSIONINFO*)&ver)) 
	{
		ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
	}
	GetVersionEx((OSVERSIONINFO*)&ver);
	ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
	return ver.dwMajorVersion;
}

int WinUtil::getOsMinor() 
{
	OSVERSIONINFOEX ver;
	memset(&ver, 0, sizeof(OSVERSIONINFOEX));
	if(!GetVersionEx((OSVERSIONINFO*)&ver)) 
	{
		ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
	}
	GetVersionEx((OSVERSIONINFO*)&ver);
	ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
	return ver.dwMinorVersion;
}

tstring WinUtil::getNicks(const CID& cid) throw() {
	return Text::toT(Util::toString(ClientManager::getInstance()->getNicks(cid)));
}

pair<tstring, bool> WinUtil::getHubNames(const CID& cid) throw() {
	StringList hubs = ClientManager::getInstance()->getHubNames(cid);
	if(hubs.empty()) {
		return make_pair(TSTRING(OFFLINE), false);
	} else {
		return make_pair(Text::toT(Util::toString(hubs)), true);
	}
}

void WinUtil::getContextMenuPos(CListViewCtrl& aList, POINT& aPt) {
	int pos = aList.GetNextItem(-1, LVNI_SELECTED | LVNI_FOCUSED);
	if(pos >= 0) {
		CRect lrc;
		aList.GetItemRect(pos, &lrc, LVIR_LABEL);
		aPt.x = lrc.left;
		aPt.y = lrc.top + (lrc.Height() / 2);
	} else {
		aPt.x = aPt.y = 0;
	}
	aList.ClientToScreen(&aPt);
}

void WinUtil::getContextMenuPos(CTreeViewCtrl& aTree, POINT& aPt) {
	CRect trc;
	HTREEITEM ht = aTree.GetSelectedItem();
	if(ht) {
		aTree.GetItemRect(ht, &trc, TRUE);
		aPt.x = trc.left;
		aPt.y = trc.top + (trc.Height() / 2);
	} else {
		aPt.x = aPt.y = 0;
	}
	aTree.ClientToScreen(&aPt);
}
void WinUtil::getContextMenuPos(CEdit& aEdit, POINT& aPt) {
	CRect erc;
	aEdit.GetRect(&erc);
	aPt.x = erc.Width() / 2;
	aPt.y = erc.Height() / 2;
	aEdit.ClientToScreen(&aPt);
}

void WinUtil::openFolder(const tstring& file) {
	if (File::getSize(Text::fromT(file)) != -1)
		::ShellExecute(NULL, NULL, Text::toT("explorer.exe").c_str(), Text::toT("/e, /select, \"" + (Text::fromT(file)) + "\"").c_str(), NULL, SW_SHOWNORMAL);
	else
		::ShellExecute(NULL, NULL, Text::toT("explorer.exe").c_str(), Text::toT("/e, \"" + Util::getFilePath(Text::fromT(file)) + "\"").c_str(), NULL, SW_SHOWNORMAL);
}