/*

* Copyright (c) 2011-2014 Remko Tronçon

* Licensed under the GNU General Public License v3.

* See Documentation/Licenses/GPLv3.txt for more information.

*/

#include <Sluift/sluift.h>

#include <lua.hpp>

#include <string>

#include <boost/bind.hpp>

#include <boost/numeric/conversion/cast.hpp>

#include <boost/assign/list_of.hpp>

#include "Watchdog.h"

#include <Sluift/Lua/Check.h>

#include <Sluift/SluiftClient.h>

#include <Sluift/globals.h>

#include <Sluift/Lua/Exception.h>

#include <Sluift/Lua/LuaUtils.h>

#include <Sluift/Lua/FunctionRegistration.h>

#include <Swiften/Base/sleep.h>

#include <Swiften/Base/foreach.h>

#include <Swiften/Base/IDGenerator.h>

#include <Swiften/Parser/PayloadParsers/UnitTest/PayloadsParserTester.h>

#include <Swiften/Serializer/PayloadSerializers/FullPayloadSerializerCollection.h>

#include <Swiften/Serializer/PayloadSerializer.h>

#include <Swiften/TLS/Certificate.h>

#include <Swiften/TLS/CertificateFactory.h>

#include <Sluift/LuaElementConvertor.h>

#include <Sluift/Lua/Debug.h>

#include <Swiften/StringCodecs/Base64.h>

#include <Swiften/StringCodecs/Hexify.h>

#include <Swiften/IDN/IDNConverter.h>

#include <Swiften/Crypto/CryptoProvider.h>

#include <Swiften/Crypto/PlatformCryptoProvider.h>

#include <Sluift/ITunesInterface.h>

using namespace Swift;

namespace Swift {

namespace Sluift {

SluiftGlobals globals;

}

}

extern "C" const char core_lua[];

extern "C" size_t core_lua_size;

static inline bool getGlobalDebug(lua_State* L) {

lua_rawgeti(L, LUA_REGISTRYINDEX, Sluift::globals.moduleLibIndex);

lua_getfield(L, -1, "debug");

int result = lua_toboolean(L, -1);

lua_pop(L, 2);

return result;

}

/*******************************************************************************

* Module functions

******************************************************************************/

SLUIFT_LUA_FUNCTION_WITH_HELP(

Sluift, new_client,

"Creates a new client.\n\nReturns a @{Client} object.\n",

"jid The JID to connect as\n"

"passphrase The passphrase to use\n",

""

) {

Lua::checkString(L, 1);

JID jid(std::string(Lua::checkString(L, 1)));

std::string password(Lua::checkString(L, 2));

SluiftClient** client = reinterpret_cast<SluiftClient**>(lua_newuserdata(L, sizeof(SluiftClient*)));

lua_rawgeti(L, LUA_REGISTRYINDEX, Sluift::globals.coreLibIndex);

lua_getfield(L, -1, "Client");

lua_setmetatable(L, -3);

lua_pop(L, 1);

*client = new SluiftClient(jid, password, &Sluift::globals.networkFactories, &Sluift::globals.eventLoop);

(*client)->setTraceEnabled(getGlobalDebug(L));

return 1;

}

SLUIFT_LUA_FUNCTION_WITH_HELP(

Sluift, sha1,

"Compute the SHA-1 hash of given data",

"data the data to hash",

""

) {

static boost::shared_ptr<CryptoProvider> crypto(PlatformCryptoProvider::create());

if (!lua_isstring(L, 1)) {

throw Lua::Exception("Expected string");

}

size_t len;

const char* data = lua_tolstring(L, 1, &len);

ByteArray result = crypto->getSHA1Hash(createByteArray(data, len));

lua_pushlstring(L, reinterpret_cast<char*>(vecptr(result)), result.size());

return 1;

}

SLUIFT_LUA_FUNCTION_WITH_HELP(

Sluift, sleep,

"Sleeps for the given time.",

"milliseconds the amount of milliseconds to sleep",

""

) {

Sluift::globals.eventLoop.runOnce();

int timeout = Lua::checkIntNumber(L, 1);

Watchdog watchdog(timeout, Sluift::globals.networkFactories.getTimerFactory());

while (!watchdog.getTimedOut()) {

Swift::sleep(boost::numeric_cast<unsigned int>(std::min(100, timeout)));

Sluift::globals.eventLoop.runOnce();

}

return 0;

}

SLUIFT_LUA_FUNCTION_WITH_HELP(

Sluift, new_uuid,

"Generates a new UUID", "", ""

) {

lua_pushstring(L, IDGenerator().generateID().c_str());

return 1;

}

SLUIFT_LUA_FUNCTION_WITH_HELP(

Sluift, from_xml,

"Convert a raw XML string into a structured representation.",

"string the string to convert",

""

) {

PayloadsParserTester parser;

if (!parser.parse(Lua::checkString(L, 1))) {

throw Lua::Exception("Error in XML");

}

return Sluift::globals.elementConvertor.convertToLua(L, parser.getPayload());

}

SLUIFT_LUA_FUNCTION_WITH_HELP(

Sluift, to_xml,

"Convert a structured element into XML.",

"element the element to convert",

""

) {

static FullPayloadSerializerCollection serializers;

boost::shared_ptr<Payload> payload = boost::dynamic_pointer_cast<Payload>(Sluift::globals.elementConvertor.convertFromLua(L, 1));

if (!payload) {

throw Lua::Exception("Unrecognized XML");

}

PayloadSerializer* serializer = serializers.getPayloadSerializer(payload);

if (!payload) {

throw Lua::Exception("Unrecognized XML");

}

lua_pushstring(L, serializer->serialize(payload).c_str());

return 1;

}

SLUIFT_LUA_FUNCTION_WITH_HELP(

Sluift, hexify,

"Convert binary data into hexadecimal format.",

"data the data to convert",

""

) {

if (!lua_isstring(L, 1)) {

throw Lua::Exception("Expected string");

}

size_t len;

const char* data = lua_tolstring(L, 1, &len);

lua_pushstring(L, Hexify::hexify(createByteArray(data, len)).c_str());

return 1;

}

SLUIFT_LUA_FUNCTION_WITH_HELP(

Sluift, unhexify,

"Convert hexadecimal data into binary data.",

"data the data in hexadecimal format",

""

) {

if (!lua_isstring(L, 1)) {

throw Lua::Exception("Expected string");

}

ByteArray result = Hexify::unhexify(lua_tostring(L, 1));

lua_pushlstring(L, reinterpret_cast<char*>(vecptr(result)), result.size());

return 1;

}

/*******************************************************************************

* Crypto functions

******************************************************************************/

SLUIFT_LUA_FUNCTION_WITH_HELP(

Crypto, new_certificate,

"Creates a new X.509 certificate from DER data.\n",

"der the DER-encoded certificate data",

"") {

ByteArray certData(Lua::checkByteArray(L, 1));

Certificate::ref cert(Sluift::globals.tlsFactories.getCertificateFactory()->createCertificateFromDER(certData));

lua_createtable(L, 0, 0);

lua_pushstring(L, cert->getSubjectName().c_str());

lua_setfield(L, -2, "subject_name");

lua_pushstring(L, Certificate::getSHA1Fingerprint(cert, Sluift::globals.networkFactories.getCryptoProvider()).c_str());

lua_setfield(L, -2, "sha1_fingerprint");

Lua::pushStringArray(L, cert->getCommonNames());

lua_setfield(L, -2, "common_names");

Lua::pushStringArray(L, cert->getSRVNames());

lua_setfield(L, -2, "srv_names");

Lua::pushStringArray(L, cert->getDNSNames());

lua_setfield(L, -2, "dns_names");

Lua::pushStringArray(L, cert->getXMPPAddresses());

lua_setfield(L, -2, "xmpp_addresses");

Lua::registerTableToString(L, -1);

return 1;

}

/*******************************************************************************

* JID Functions

******************************************************************************/

SLUIFT_LUA_FUNCTION(JID, to_bare) {

JID jid(std::string(Lua::checkString(L, 1)));

lua_pushstring(L, jid.toBare().toString().c_str());

return 1;

}

SLUIFT_LUA_FUNCTION(JID, node) {

JID jid(std::string(Lua::checkString(L, 1)));

lua_pushstring(L, jid.getNode().c_str());

return 1;

}

SLUIFT_LUA_FUNCTION(JID, domain) {

JID jid(std::string(Lua::checkString(L, 1)));

lua_pushstring(L, jid.getDomain().c_str());

return 1;

}

SLUIFT_LUA_FUNCTION(JID, resource) {

JID jid(std::string(Lua::checkString(L, 1)));

lua_pushstring(L, jid.getResource().c_str());

return 1;

}

SLUIFT_LUA_FUNCTION(JID, escape_node) {

lua_pushstring(L, JID::getEscapedNode(Lua::checkString(L, 1)).c_str());

return 1;

}

/*******************************************************************************

* Base64 Functions

******************************************************************************/

SLUIFT_LUA_FUNCTION(Base64, encode) {

if (!lua_isstring(L, 1)) {

throw Lua::Exception("Expected string");

}

size_t len;

const char* data = lua_tolstring(L, 1, &len);

lua_pushstring(L, Base64::encode(createByteArray(data, len)).c_str());

return 1;

}

SLUIFT_LUA_FUNCTION(Base64, decode) {

if (!lua_isstring(L, 1)) {

throw Lua::Exception("Expected string");

}

ByteArray result = Base64::decode(lua_tostring(L, 1));

lua_pushlstring(L, reinterpret_cast<char*>(vecptr(result)), result.size());

return 1;

}

/*******************************************************************************

* IDN Functions

******************************************************************************/

SLUIFT_LUA_FUNCTION(IDN, encode) {

IDNConverter* converter = Sluift::globals.networkFactories.getIDNConverter();

lua_pushstring(L, converter->getIDNAEncoded(Lua::checkString(L, 1)).c_str());

return 1;

}

SLUIFT_LUA_FUNCTION(IDN, stringprep) {

IDNConverter* converter = Sluift::globals.networkFactories.getIDNConverter();

IDNConverter::StringPrepProfile profile;

std::string profileString = Lua::checkString(L, 2);

if (profileString == "nameprep") {

profile = IDNConverter::NamePrep;

}

else if (profileString == "xmpp_nodeprep") {

profile = IDNConverter::XMPPNodePrep;

}

else if (profileString == "xmpp_resourceprep") {

profile = IDNConverter::XMPPResourcePrep;

}

else if (profileString == "saslprep") {

profile = IDNConverter::SASLPrep;

}

else {

throw Lua::Exception("Invalid profile");

}

try {

lua_pushstring(L, converter->getStringPrepared(Lua::checkString(L, 1), profile).c_str());

}

catch (const std::exception&) {

throw Lua::Exception("Error");

}

return 1;

}

/*******************************************************************************

* iTunes Functions

******************************************************************************/

#ifdef HAVE_ITUNES

SLUIFT_LUA_FUNCTION(iTunes, get_current_track) {

boost::optional<ITunesInterface::Track> track = Sluift::globals.iTunes.getCurrentTrack();

if (!track) {

return 0;

}

lua_createtable(L, 0, 0);

lua_pushstring(L, track->artist.c_str());

lua_setfield(L, -2, "artist");

lua_pushstring(L, track->name.c_str());

lua_setfield(L, -2, "name");

lua_pushstring(L, track->album.c_str());

lua_setfield(L, -2, "album");

lua_pushinteger(L, track->trackNumber);

lua_setfield(L, -2, "track_number");

lua_pushnumber(L, track->duration);

lua_setfield(L, -2, "duration");

lua_pushinteger(L, track->rating);

lua_setfield(L, -2, "rating");

Lua::registerTableToString(L, -1);

Lua::registerTableEquals(L, -1);

return 1;

}

#endif

/*******************************************************************************

* Module registration

******************************************************************************/

static const luaL_Reg sluift_functions[] = { {NULL, NULL} };

SLUIFT_API int luaopen_sluift(lua_State* L) {

// Initialize & store the module table

luaL_register(L, lua_tostring(L, 1), sluift_functions);

lua_pushinteger(L, -1);

lua_setfield(L, -2, "timeout");

lua_pushboolean(L, 0);

lua_setfield(L, -2, "debug");

lua_pushvalue(L, -1);

Sluift::globals.moduleLibIndex = luaL_ref(L, LUA_REGISTRYINDEX);

// Load core lib code

if (luaL_loadbuffer(L, core_lua, core_lua_size, "core.lua") != 0) {

lua_error(L);

}

lua_pushvalue(L, -2);

lua_call(L, 1, 1);

Sluift::globals.coreLibIndex = luaL_ref(L, LUA_REGISTRYINDEX);

// Register functions

Lua::FunctionRegistry::getInstance().addFunctionsToTable(L, "Sluift");

Lua::FunctionRegistry::getInstance().createFunctionTable(L, "JID");

lua_setfield(L, -2, "jid");

Lua::FunctionRegistry::getInstance().createFunctionTable(L, "Base64");

lua_setfield(L, -2, "base64");

Lua::FunctionRegistry::getInstance().createFunctionTable(L, "IDN");

lua_setfield(L, -2, "idn");

Lua::FunctionRegistry::getInstance().createFunctionTable(L, "Crypto");

lua_setfield(L, -2, "crypto");

#ifdef HAVE_ITUNES

Lua::FunctionRegistry::getInstance().createFunctionTable(L, "iTunes");

lua_setfield(L, -2, "itunes");

#endif

// Register convenience functions

lua_rawgeti(L, LUA_REGISTRYINDEX, Sluift::globals.coreLibIndex);

std::vector<std::string> coreLibExports = boost::assign::list_of

("tprint")("disco")("help")("get_help")("copy")("with")("read_file")("create_form");

foreach (const std::string& coreLibExport, coreLibExports) {

lua_getfield(L, -1, coreLibExport.c_str());

lua_setfield(L, -3, coreLibExport.c_str());

}

lua_pop(L, 1);

// Load client metatable

lua_rawgeti(L, LUA_REGISTRYINDEX, Sluift::globals.coreLibIndex);

std::vector<std::string> tables = boost::assign::list_of("Client");

foreach(const std::string& table, tables) {

lua_getfield(L, -1, table.c_str());

Lua::FunctionRegistry::getInstance().addFunctionsToTable(L, table);

lua_pop(L, 1);

}

lua_pop(L, 1);

// Register documentation for all elements

foreach (boost::shared_ptr<LuaElementConvertor> convertor, Sluift::globals.elementConvertor.getConvertors()) {

boost::optional<LuaElementConvertor::Documentation> documentation = convertor->getDocumentation();

if (documentation) {

Lua::registerClassHelp(L, documentation->className, documentation->description);

}

}

// Register global documentation

Lua::registerExtraHelp(L, -1, "sluift");

return 1;

}