// This is an open source non-commercial project. Dear PVS-Studio, please check it.
// PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
/**
* @file llfloaterpreferenceproxy.cpp
* @brief Proxy preferences
*
* $LicenseInfo:firstyear=2002&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
* $/LicenseInfo$
*/

/*
* App-wide preferences.  Note that these are not per-user,
* because we need to load many preferences before we have
* a login name.
*/

#include "llviewerprecompiledheaders.h"

#include "llfloaterpreferenceproxy.h"

// newview
#include "llsecapi.h"
#include "llstartup.h"

// libraries
#include "lllineeditor.h"
#include "llnotifications.h"
#include "llradiogroup.h"

LLFloaterPreferenceProxy::LLFloaterPreferenceProxy(const LLSD& key)
	: LLFloater(key),
	mSocksSettingsDirty(false)
{
	mCommitCallbackRegistrar.add("Proxy.OK", boost::bind(&LLFloaterPreferenceProxy::onBtnOk, this));
	mCommitCallbackRegistrar.add("Proxy.Cancel", boost::bind(&LLFloaterPreferenceProxy::onBtnCancel, this));
	mCommitCallbackRegistrar.add("Proxy.Change", boost::bind(&LLFloaterPreferenceProxy::onChangeSocksSettings, this));
}

LLFloaterPreferenceProxy::~LLFloaterPreferenceProxy()
{
}

BOOL LLFloaterPreferenceProxy::postBuild()
{
	LLRadioGroup* socksAuth = getChild<LLRadioGroup>("socks5_auth_type");
	if (!socksAuth)
	{
		return FALSE;
	}
	if (socksAuth->getSelectedValue().asString() == "None")
	{
		getChild<LLLineEditor>("socks5_username")->setEnabled(false);
		getChild<LLLineEditor>("socks5_password")->setEnabled(false);
	}
	else
	{
		// Populate the SOCKS 5 credential fields with protected values.
		LLPointer<LLCredential> socks_cred = gSecAPIHandler->loadCredential("SOCKS5");
		getChild<LLLineEditor>("socks5_username")->setValue(socks_cred->getIdentifier()["username"].asString());
		getChild<LLLineEditor>("socks5_password")->setValue(socks_cred->getAuthenticator()["creds"].asString());
	}

	return TRUE;
}

void LLFloaterPreferenceProxy::onOpen(const LLSD& key)
{
	saveSettings();
}

void LLFloaterPreferenceProxy::onClose(bool app_quitting)
{
	if (app_quitting)
	{
		cancel();
	}

	if (mSocksSettingsDirty)
	{

		// If the user plays with the Socks proxy settings after login, it's only fair we let them know
		// it will not be updated until next restart.
		if (LLStartUp::getStartupState()>STATE_LOGIN_WAIT)
		{
			LLNotifications::instance().add("ChangeProxySettings", LLSD(), LLSD());
			mSocksSettingsDirty = false; // we have notified the user now be quiet again
		}
	}
}

void LLFloaterPreferenceProxy::saveSettings()
{
	// Save the value of all controls in the hierarchy
	mSavedValues.clear();
	std::list<LLView*> view_stack;
	view_stack.push_back(this);
	while (!view_stack.empty())
	{
		// Process view on top of the stack
		LLView* curview = view_stack.front();
		view_stack.pop_front();

		LLUICtrl* ctrl = dynamic_cast<LLUICtrl*>(curview);
		if (ctrl)
		{
			LLControlVariable* control = ctrl->getControlVariable();
			if (control)
			{
				mSavedValues[control] = control->getValue();
			}
		}

		// Push children onto the end of the work stack
		for (child_list_t::const_iterator iter = curview->getChildList()->begin();
			iter != curview->getChildList()->end(); ++iter)
		{
			view_stack.push_back(*iter);
		}
	}
}

void LLFloaterPreferenceProxy::onBtnOk()
{
	// commit any outstanding text entry
	if (hasFocus())
	{
		LLUICtrl* cur_focus = dynamic_cast<LLUICtrl*>(gFocusMgr.getKeyboardFocus());
		if (cur_focus && cur_focus->acceptsTextInput())
		{
			cur_focus->onCommit();
		}
	}

	// Save SOCKS proxy credentials securely if password auth is enabled
	LLRadioGroup* socksAuth = getChild<LLRadioGroup>("socks5_auth_type");
	if (socksAuth->getSelectedValue().asString() == "UserPass")
	{
		LLSD socks_id = LLSD::emptyMap();
		socks_id["type"] = "SOCKS5";
		socks_id["username"] = getChild<LLLineEditor>("socks5_username")->getValue().asString();

		LLSD socks_authenticator = LLSD::emptyMap();
		socks_authenticator["type"] = "SOCKS5";
		socks_authenticator["creds"] = getChild<LLLineEditor>("socks5_password")->getValue().asString();

		// Using "SOCKS5" as the "grid" argument since the same proxy
		// settings will be used for all grids and because there is no
		// way to specify the type of credential.
		LLPointer<LLCredential> socks_cred = gSecAPIHandler->createCredential("SOCKS5", socks_id, socks_authenticator);
		gSecAPIHandler->saveCredential(socks_cred, true);
	}
	else
	{
		// Clear SOCKS5 credentials since they are no longer needed.
		LLPointer<LLCredential> socks_cred = new LLCredential("SOCKS5");
		gSecAPIHandler->deleteCredential(socks_cred);
	}

	closeFloater(false);
}

void LLFloaterPreferenceProxy::onBtnCancel()
{
	if (hasFocus())
	{
		LLUICtrl* cur_focus = dynamic_cast<LLUICtrl*>(gFocusMgr.getKeyboardFocus());
		if (cur_focus && cur_focus->acceptsTextInput())
		{
			cur_focus->onCommit();
		}
		refresh();
	}

	cancel();
}

void LLFloaterPreferenceProxy::onClickCloseBtn(bool app_quitting)
{
	cancel();
}

void LLFloaterPreferenceProxy::cancel()
{

	for (control_values_map_t::iterator iter = mSavedValues.begin();
		iter != mSavedValues.end(); ++iter)
	{
		LLControlVariable* control = iter->first;
		LLSD ctrl_value = iter->second;
		control->set(ctrl_value);
	}
	mSocksSettingsDirty = false;
	closeFloater();
}

void LLFloaterPreferenceProxy::onChangeSocksSettings()
{
	mSocksSettingsDirty = true;

	LLRadioGroup* socksAuth = getChild<LLRadioGroup>("socks5_auth_type");
	if (socksAuth->getSelectedValue().asString() == "None")
	{
		getChild<LLLineEditor>("socks5_username")->setEnabled(false);
		getChild<LLLineEditor>("socks5_password")->setEnabled(false);
	}
	else
	{
		getChild<LLLineEditor>("socks5_username")->setEnabled(true);
		getChild<LLLineEditor>("socks5_password")->setEnabled(true);
	}

	// Check for invalid states for the other HTTP proxy radio
	LLRadioGroup* otherHttpProxy = getChild<LLRadioGroup>("other_http_proxy_type");
	if ((otherHttpProxy->getSelectedValue().asString() == "Socks" &&
		getChild<LLCheckBoxCtrl>("socks_proxy_enabled")->get() == FALSE) || (
			otherHttpProxy->getSelectedValue().asString() == "Web" &&
			getChild<LLCheckBoxCtrl>("web_proxy_enabled")->get() == FALSE))
	{
		otherHttpProxy->selectFirstItem();
	}

}
