ryzom-core/code/ryzom/client/src/libwww.cpp

// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
// Copyright (C) 2010  Winch Gate Property Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.



#include "stdpch.h"

// LibWWW
extern "C"
{
#include "WWWLib.h"			      /* Global Library Include file */
#include "WWWApp.h"
#include "WWWInit.h"
}

#include "interface_v3/group_html.h"
#include "game_share/ryzom_version.h"

#include "interface_v3/libwww_nel_stream.h"

using namespace NLMISC;

/// the cookie value for session identification (nel cookie)
std::string CurrentCookie;

/// store all cookies we receive and resent them depending of the domain
std::map<std::string, std::map<std::string, std::string> > HTTPCookies;
std::string HTTPCurrentDomain;	// The current domain that will be used to get which cookies to send

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

// The HText structure for libwww
struct _HText
{
    CGroupHTML		*Parent;
};

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

// Some DTD table

// Here, modify the DTD table to change the HTML parser (add new tags for examples)

#undef HTML_ATTR
#define HTML_ATTR(a,b) { (char*) #b }

HTAttr a_attr[] =
{
	HTML_ATTR(A,ACCESSKEY),
		HTML_ATTR(A,CHARSET),
		HTML_ATTR(A,CLASS),
		HTML_ATTR(A,COORDS),
		HTML_ATTR(A,DIR),
		HTML_ATTR(A,HREF),
		HTML_ATTR(A,HREFLANG),
		HTML_ATTR(A,ID),
		HTML_ATTR(A,NAME),
		HTML_ATTR(A,REL),
		HTML_ATTR(A,REV),
		HTML_ATTR(A,SHAPE),
		HTML_ATTR(A,STYLE),
		HTML_ATTR(A,TABINDEX),
		HTML_ATTR(A,TARGET),
		HTML_ATTR(A,TYPE),
		HTML_ATTR(A,TITLE),
		HTML_ATTR(A,Z_ACTION_CATEGORY),
		HTML_ATTR(A,Z_ACTION_PARAMS),
		HTML_ATTR(A,Z_ACTION_SHORTCUT),
	{ 0 }
};

HTAttr table_attr[] =
{
	HTML_ATTR(TABLE,ALIGN),
		HTML_ATTR(TABLE,BGCOLOR),
		HTML_ATTR(TABLE,BORDER),
		HTML_ATTR(TABLE,CELLPADDING),
		HTML_ATTR(TABLE,CELLSPACING),
		HTML_ATTR(TABLE,CLASS),
		HTML_ATTR(TABLE,DIR),
		HTML_ATTR(TABLE,FRAME),
		HTML_ATTR(TABLE,ID),
		HTML_ATTR(TABLE,L_MARGIN),
		HTML_ATTR(TABLE,LANG),
		HTML_ATTR(TABLE,NOWRAP),
		HTML_ATTR(TABLE,RULES),
		HTML_ATTR(TABLE,SUMMARY),
		HTML_ATTR(TABLE,STYLE),
		HTML_ATTR(TABLE,TITLE),
		HTML_ATTR(TABLE,VALIGN),
		HTML_ATTR(TABLE,WIDTH),
	{ 0 }
};

HTAttr tr_attr[] =
{
	HTML_ATTR(TR,ALIGN),
		HTML_ATTR(TR,BGCOLOR),
		HTML_ATTR(TR,L_MARGIN),
		HTML_ATTR(TR,NOWRAP),
		HTML_ATTR(TR,VALIGN),
	{ 0 }
};

HTAttr td_attr[] =
{
	HTML_ATTR(TD,ABBR),
		HTML_ATTR(TD,ALIGN),
		HTML_ATTR(TD,AXIS),
		HTML_ATTR(TD,BGCOLOR),
		HTML_ATTR(TD,CHAR),
		HTML_ATTR(TD,CHAROFF),
		HTML_ATTR(TD,CLASS),
		HTML_ATTR(TD,COLSPAN),
		HTML_ATTR(TD,DIR),
		HTML_ATTR(TD,ID),
		HTML_ATTR(TD,HEADERS),
		HTML_ATTR(TD,HEIGHT),
		HTML_ATTR(TD,L_MARGIN),
		HTML_ATTR(TD,LANG),
		HTML_ATTR(TD,NOWRAP),
		HTML_ATTR(TD,ROWSPAN),
		HTML_ATTR(TD,SCOPE),
		HTML_ATTR(TD,STYLE),
		HTML_ATTR(TD,TITLE),
		HTML_ATTR(TD,VALIGN),
		HTML_ATTR(TD,WIDTH),
	{ 0 }
};

HTAttr img_attr[] =
{
	HTML_ATTR(IMG,ALIGN),
		HTML_ATTR(IMG,ALT),
		HTML_ATTR(IMG,BORDER),
		HTML_ATTR(IMG,CLASS),
		HTML_ATTR(IMG,DIR),
		HTML_ATTR(IMG,GLOBAL_COLOR),
		HTML_ATTR(IMG,HEIGHT),
		HTML_ATTR(IMG,HSPACE),
		HTML_ATTR(IMG,ID),
		HTML_ATTR(IMG,ISMAP),
		HTML_ATTR(IMG,LANG),
		HTML_ATTR(IMG,LONGDESC),
		HTML_ATTR(IMG,SRC),
		HTML_ATTR(IMG,STYLE),
		HTML_ATTR(IMG,TITLE),
		HTML_ATTR(IMG,USEMAP),
		HTML_ATTR(IMG,VSPACE),
		HTML_ATTR(IMG,WIDTH),
		{ 0 }
};

HTAttr input_attr[] =
{
	HTML_ATTR(INPUT,ACCEPT),
		HTML_ATTR(INPUT,ACCESSKEY),
		HTML_ATTR(INPUT,ALIGN),
		HTML_ATTR(INPUT,ALT),
		HTML_ATTR(INPUT,CHECKED),
		HTML_ATTR(INPUT,CLASS),
		HTML_ATTR(INPUT,DIR),
		HTML_ATTR(INPUT,DISABLED),
		HTML_ATTR(INPUT,GLOBAL_COLOR),
		HTML_ATTR(INPUT,ID),
		HTML_ATTR(INPUT,LANG),
		HTML_ATTR(INPUT,MAXLENGTH),
		HTML_ATTR(INPUT,NAME),
		HTML_ATTR(INPUT,READONLY),
		HTML_ATTR(INPUT,SIZE),
		HTML_ATTR(INPUT,SRC),
		HTML_ATTR(INPUT,STYLE),
		HTML_ATTR(INPUT,TABINDEX),
		HTML_ATTR(INPUT,TITLE),
		HTML_ATTR(INPUT,TYPE),
		HTML_ATTR(INPUT,USEMAP),
		HTML_ATTR(INPUT,VALUE),
		HTML_ATTR(INPUT,Z_BTN_TMPL),
		HTML_ATTR(INPUT,Z_INPUT_TMPL),
		HTML_ATTR(INPUT,Z_INPUT_WIDTH),
	{ 0 }
};

HTAttr textarea_attr[] =
{
	HTML_ATTR(TEXTAREA,CLASS),
	HTML_ATTR(TEXTAREA,COLS),
	HTML_ATTR(TEXTAREA,DIR),
	HTML_ATTR(TEXTAREA,DISABLED),
	HTML_ATTR(TEXTAREA,ID),
	HTML_ATTR(TEXTAREA,LANG),
	HTML_ATTR(TEXTAREA,NAME),
	HTML_ATTR(TEXTAREA,READONLY),
	HTML_ATTR(TEXTAREA,ROWS),
	HTML_ATTR(TEXTAREA,STYLE),
	HTML_ATTR(TEXTAREA,TABINDEX),
	HTML_ATTR(TEXTAREA,TITLE),
	HTML_ATTR(TEXTAREA,Z_INPUT_TMPL),
	{ 0 }
};


HTAttr p_attr[] =
{
	HTML_ATTR(P,QUICK_HELP_CONDITION),
		HTML_ATTR(P,QUICK_HELP_EVENTS),
		HTML_ATTR(P,QUICK_HELP_LINK),
	{ 0 }
};

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

void _VerifyLibWWW(const char *function, bool ok, const char *file, int line)
{
	if (!ok)
		nlwarning("%s(%d) : LIBWWW %s returned a bad status", file, line, function);
}
#define VerifyLibWWW(a,b) _VerifyLibWWW(a,(b)!=FALSE,__FILE__,__LINE__)

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

int NelPrinter (const char * fmt, va_list pArgs)
{
	char info[1024];
	int ret;

	ret = vsnprintf(info, sizeof(info), fmt, pArgs);
	nlinfo("%s", info);
	return ret;
}

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

int NelTracer (const char * fmt, va_list pArgs)
{
	char err[1024];
	int ret;

	ret = vsnprintf(err, sizeof(err), fmt, pArgs);
	nlwarning ("%s", err);
	return ret;
}

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

HText * TextNew (HTRequest *		request,
			  HTParentAnchor *	/* anchor */,
			  HTStream *		/* output_stream */)
{
	HText *text = new HText;
	text->Parent = (CGroupHTML *) HTRequest_context(request);
    return text;
}

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

BOOL TextDelete (HText * me)
{
	delete me;
    return YES;
}

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

void TextBuild (HText * me, HTextStatus status)
{
	// Do the work in the class
	if (status == HTEXT_BEGIN)
		me->Parent->beginBuild ();
	else if (status == HTEXT_END)
		me->Parent->endBuild ();
}

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

void TextAdd (HText * me, const char * buf, int len)
{
	// Do the work in the class
	me->Parent->addText (buf, len);
}

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

void TextLink (HText * 	me,
			int		element_number,
			int		attribute_number,
			HTChildAnchor *	anchor,
			const BOOL * 	present,
			const char **	value)
{
	// Do the work in the class
	me->Parent->addLink (element_number, attribute_number, anchor, present, value);
}

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

// Read a width HTML parameter. "100" or "100%". Returns true if percent (0 ~ 1) else false
bool getPercentage (sint32 &width, float &percent, const char *str)
{
	// Percent ?
	const char *percentChar;
	if ((percentChar = strchr (str, '%')) != NULL)
	{
		std::string toto = str;
		toto = toto.substr (0, percentChar - str);
		fromString(toto, percent);
		percent /= 100.f;
		return true;
	}
	else
	{
		fromString(str, width);
		return false;
	}
}

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

CRGBA getColor (const char *color)
{
	if (strlen (color) != 7 && strlen (color) != 9 )
		return CRGBA::White;
	char tmp[3] = {0,0,0};
	CRGBA dst;
	int value;
	tmp[0] = color[1];
	tmp[1] = color[2];
	sscanf (tmp, "%x", &value);
	dst.R = uint8(value);
	tmp[0] = color[3];
	tmp[1] = color[4];
	sscanf (tmp, "%x", &value);
	dst.G = uint8(value);
	tmp[0] = color[5];
	tmp[1] = color[6];
	sscanf (tmp, "%x", &value);
	dst.B = uint8(value);
	if (strlen (color) == 9)
	{
		tmp[0] = color[7];
		tmp[1] = color[8];
		sscanf (tmp, "%x", &value);
		dst.A = uint8(value);
	}
	else
	{
		// extension to html ; try to parse an additional alpha
		dst.A = 255;
	}
	return dst;
}

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

void TextBeginElement (HText *me, int element_number, const BOOL *present, const char **value)
{
	// Do the work in the class
	me->Parent->beginElement (element_number, present, value);
}

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

void TextEndElement (HText *me, int element_number)
{
	// Do the work in the class
	me->Parent->endElement (element_number);
}

// ***************************************************************************
void TextBeginUnparsedElement(HText *me, const char *buffer, int length)
{
	me->Parent->beginUnparsedElement(buffer, length);
}

// ***************************************************************************
void TextEndUnparsedElement(HText *me, const char *buffer, int length)
{
	me->Parent->endUnparsedElement(buffer, length);
}

// ***************************************************************************
void TextUnparsedEntity (HText * /* HText */, const char *buffer, int length)
{
	std::string str(buffer, buffer+length);
	nlinfo("Unparsed entity '%s'", str.c_str());
}

// ***************************************************************************
int requestTerminater (HTRequest * request, HTResponse * /* response */,
				void * param, int /* status */)
{
	/*
		Yoyo and Boris: we had to make the request terminate by UID and not by pointer (param is an uid).
		Because this method was called at mainLoop time, but for GroupHTML created/deleted at login time !!!
		=> Memory Crash.
	*/

	// TestYoyo
	//nlinfo("** requestTerminater(): uid%d", (uint32)param);

	// the parameter is actually an uint32
	if (param != 0)
	{
		CGroupHTML::TGroupHtmlByUIDMap::iterator	it= CGroupHTML::_GroupHtmlByUID.find((uint32)(size_t)param);
		if(it!=CGroupHTML::_GroupHtmlByUID.end())
		{
			// get the pointer. NB: the refptr should not be NULL
			// since object removed from map when deleted
			CGroupHTML *gh = it->second;
			nlassert(gh);

			// callback the browser
			gh->requestTerminated(request);
		}
	}
    return HT_OK;
}


// callback called when receiving a cookie
BOOL receiveCookie (HTRequest * /* request */, HTCookie * cookie, void * /* param */)
{
	if (strcmp(HTCookie_name(cookie), "ryzomId") == 0)
	{
		// we receive the ryzom id cookie, store it
		CurrentCookie = HTCookie_value(cookie);
	}
	else
	{
		// store the id/value cookie
		HTTPCookies[HTTPCurrentDomain][HTCookie_name(cookie)] = HTCookie_value(cookie);
//		nlwarning("get cookie for domain %s %s=%s", HTTPCurrentDomain.c_str(), HTCookie_name(cookie), HTCookie_value(cookie));
	}

	return YES;
}

// callback called to add cookie to a request before sending it to the server
HTAssocList *sendCookie (HTRequest * /* request */, void * /* param */)
{
	HTAssocList * alist = 0;
	if (!CurrentCookie.empty())
	{
		if(alist == 0) alist = HTAssocList_new();	/* Is deleted by the cookie module */
		HTAssocList_addObject(alist, "ryzomId", CurrentCookie.c_str());
	}

	if(!HTTPCookies[HTTPCurrentDomain].empty())
	{
		if(alist == 0) alist = HTAssocList_new();
		for(std::map<std::string, std::string>::iterator it = HTTPCookies[HTTPCurrentDomain].begin(); it != HTTPCookies[HTTPCurrentDomain].end(); it++)
		{
			HTAssocList_addObject(alist, it->first.c_str(), it->second.c_str());
//			nlwarning("set cookie for domain '%s' %s=%s", HTTPCurrentDomain.c_str(), it->first.c_str(), it->second.c_str());
		}
	}
	return alist;
}


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

HTAnchor * TextFindAnchor (HText * /* me */, int /* index */)
{
    return NULL;
}

int HTMIME_location_custom (HTRequest * request, HTResponse * response, char * token, char * value)
{
	char * location = HTStrip(value);

	std::string finalLocation;

	//nlinfo("redirect to '%s' '%s'", value, location);

	// If not absolute URI (Error) then find the base
	if (!HTURL_isAbsolute(location))
	{
		char * base = HTAnchor_address((HTAnchor *) HTRequest_anchor(request));
		location = HTParse(location, base, PARSE_ALL);
		//redirection = HTAnchor_findAddress(location);
		finalLocation = location;
		HT_FREE(base);
		HT_FREE(location);
	}
	else
	{
		finalLocation = location;
	}
	//nlinfo("final location '%s'", finalLocation.c_str());

	CGroupHTML *gh = (CGroupHTML *) HTRequest_context(request);

	gh->setURL(finalLocation);

	return HT_OK;
}


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

void setCurrentDomain(const std::string &url)
{
	if(url.find("http://") == 0)
	{
		HTTPCurrentDomain = url.substr(7, url.find('/', 7)-7);
//		nlinfo("****cd: %s", HTTPCurrentDomain.c_str());
	}
	else
	{
		HTTPCurrentDomain.clear();
//		nlinfo("****cd: clear the domain");
	}
}

void initLibWWW()
{
	static bool initialized = false;
	if (!initialized)
	{
        //HTProfile_newNoCacheClient("Ryzom", "1.1");

		/* Need our own trace and print functions */
		HTPrint_setCallback(NelPrinter);
		HTTrace_setCallback(NelTracer);

		/* Initiate libwww */

		HTLib_setAppName("Ryzom");
		HTLib_setAppVersion(RYZOM_VERSION);

		/* Set up TCP as transport */
		VerifyLibWWW("HTTransport_add", HTTransport_add("buffered_tcp", HT_TP_SINGLE, HTReader_new, HTBufferWriter_new));
		VerifyLibWWW("HTTransport_add", HTTransport_add("local", HT_TP_SINGLE, HTNeLReader_new, HTWriter_new));
		// VerifyLibWWW("HTTransport_add", HTTransport_add("local", HT_TP_SINGLE, HTANSIReader_new, HTWriter_new));
		// VerifyLibWWW("HTTransport_add", HTTransport_add("local", HT_TP_SINGLE, HTReader_new, HTWriter_new));

		/* Set up HTTP as protocol */
		VerifyLibWWW("HTProtocol_add", HTProtocol_add("http", "buffered_tcp", 80, NO, HTLoadHTTP, NULL));
	    VerifyLibWWW("HTProtocol_add", HTProtocol_add("file", 	"local", 	0, 	YES, 	HTLoadNeLFile, 	NULL));
		//VerifyLibWWW("HTProtocol_add", HTProtocol_add("file", 	"local", 	0, 	YES, 	HTLoadFile, 	NULL));
		// HTProtocol_add("cache", 	"local", 	0, 	NO, 	HTLoadCache, 	NULL);

		HTBind_init();
		// HTCacheInit(NULL, 20);

		/* Setup up transfer coders */
		HTFormat_addTransferCoding((char*)"chunked", HTChunkedEncoder, HTChunkedDecoder, 1.0);

		/* Setup MIME stream converters */
		HTFormat_addConversion("message/rfc822", "*/*", HTMIMEConvert, 1.0, 0.0, 0.0);
		HTFormat_addConversion("message/x-rfc822-foot", "*/*", HTMIMEFooter, 1.0, 0.0, 0.0);
		HTFormat_addConversion("message/x-rfc822-head", "*/*", HTMIMEHeader, 1.0, 0.0, 0.0);
		HTFormat_addConversion("message/x-rfc822-cont", "*/*", HTMIMEContinue, 1.0, 0.0, 0.0);
		HTFormat_addConversion("message/x-rfc822-partial","*/*", HTMIMEPartial, 1.0, 0.0, 0.0);
		HTFormat_addConversion("multipart/*", "*/*", HTBoundary, 1.0, 0.0, 0.0);

		/* Setup HTTP protocol stream */
		HTFormat_addConversion("text/x-http", "*/*", HTTPStatus_new, 1.0, 0.0, 0.0);

		/* Setup the HTML parser */
		HTFormat_addConversion("text/html", "www/present", HTMLPresent, 1.0, 0.0, 0.0);

		/* Setup black hole stream */
		HTFormat_addConversion("*/*", "www/debug", HTBlackHoleConverter, 1.0, 0.0, 0.0);
		HTFormat_addConversion("*/*", "www/present", HTBlackHoleConverter, 0.3, 0.0, 0.0);

		/* Set max number of sockets we want open simultaneously */
		HTNet_setMaxSocket(32);

		/* Register our HTML parser callbacks */
		VerifyLibWWW("HText_registerCDCallback", HText_registerCDCallback (TextNew, TextDelete));
		VerifyLibWWW("HText_registerBuildCallback", HText_registerBuildCallback (TextBuild));
		VerifyLibWWW("HText_registerTextCallback", HText_registerTextCallback(TextAdd));
		VerifyLibWWW("HText_registerLinkCallback", HText_registerLinkCallback (TextLink));
		VerifyLibWWW("HText_registerElementCallback", HText_registerElementCallback (TextBeginElement, TextEndElement));
		VerifyLibWWW("HText_registerUnparsedElementCallback", HText_registerUnparsedElementCallback(TextBeginUnparsedElement, TextEndUnparsedElement));
		VerifyLibWWW("HText_registerUnparsedEntityCallback ", HText_registerUnparsedEntityCallback (TextUnparsedEntity ));


		/* Register the default set of MIME header parsers */
		struct {
			const char * string;
		HTParserCallback * pHandler;
		} fixedHandlers[] = {
		{"accept", &HTMIME_accept},
		{"accept-charset", &HTMIME_acceptCharset},
		{"accept-encoding", &HTMIME_acceptEncoding},
		{"accept-language", &HTMIME_acceptLanguage},
		{"accept-ranges", &HTMIME_acceptRanges},
		{"authorization", NULL},
		{"cache-control", &HTMIME_cacheControl},
		{"connection", &HTMIME_connection},
		{"content-encoding", &HTMIME_contentEncoding},
		{"content-length", &HTMIME_contentLength},
		{"content-range", &HTMIME_contentRange},
		{"content-transfer-encoding", &HTMIME_contentTransferEncoding},
		{"content-type", &HTMIME_contentType},
		{"digest-MessageDigest", &HTMIME_messageDigest},
		{"keep-alive", &HTMIME_keepAlive},
		{"link", &HTMIME_link},
		{"location", &HTMIME_location_custom},
		{"max-forwards", &HTMIME_maxForwards},
		{"mime-version", NULL},
		{"pragma", &HTMIME_pragma},
			{"protocol", &HTMIME_protocol},
			{"protocol-info", &HTMIME_protocolInfo},
			{"protocol-request", &HTMIME_protocolRequest},
		{"proxy-authenticate", &HTMIME_authenticate},
		{"proxy-authorization", &HTMIME_proxyAuthorization},
		{"public", &HTMIME_public},
		{"range", &HTMIME_range},
		{"referer", &HTMIME_referer},
		{"retry-after", &HTMIME_retryAfter},
		{"server", &HTMIME_server},
		{"trailer", &HTMIME_trailer},
		{"transfer-encoding", &HTMIME_transferEncoding},
		{"upgrade", &HTMIME_upgrade},
		{"user-agent", &HTMIME_userAgent},
		{"vary", &HTMIME_vary},
		{"via", &HTMIME_via},
		{"warning", &HTMIME_warning},
		{"www-authenticate", &HTMIME_authenticate},
			{"authentication-info", &HTMIME_authenticationInfo},
			{"proxy-authentication-info", &HTMIME_proxyAuthenticationInfo}
		};

		for (uint i = 0; i < sizeof(fixedHandlers)/sizeof(fixedHandlers[0]); i++)
			HTHeader_addParser(fixedHandlers[i].string, NO, fixedHandlers[i].pHandler);

		/* Set up default event loop */
		HTEventInit();

	    /* Add our own request terminate handler */
	    HTNet_addAfter(requestTerminater, NULL, 0, HT_ALL, HT_FILTER_LAST);

		/* Setup cookies */
		HTCookie_init();
		HTCookie_setCookieMode(HTCookieMode(HT_COOKIE_ACCEPT | HT_COOKIE_SEND));
		HTCookie_setCallbacks(receiveCookie, NULL, sendCookie, NULL);

		/* Start the first request */

		/* Go into the event loop... */
		// HTEventList_newLoop();

	    // App_delete(app);

		HTBind_add("htm",	"text/html",			NULL,		"8bit",		NULL,	1.0);	/* HTML			*/
		HTBind_add("html",	"text/html",			NULL,		"8bit",		NULL,	1.0);	/* HTML			*/

		HTBind_caseSensitive(NO);

		// Change the HTML DTD
		SGML_dtd *HTML_DTD = HTML_dtd ();
		HTML_DTD->tags[HTML_TABLE].attributes = table_attr;
		HTML_DTD->tags[HTML_TABLE].number_of_attributes = sizeof(table_attr) / sizeof(HTAttr) - 1;
		HTML_DTD->tags[HTML_TR].attributes = tr_attr;
		HTML_DTD->tags[HTML_TR].number_of_attributes = sizeof(tr_attr) / sizeof(HTAttr) - 1;
		HTML_DTD->tags[HTML_TD].attributes = td_attr;
		HTML_DTD->tags[HTML_TD].number_of_attributes = sizeof(td_attr) / sizeof(HTAttr) - 1;
		HTML_DTD->tags[HTML_IMG].attributes = img_attr;
		HTML_DTD->tags[HTML_IMG].number_of_attributes = sizeof(img_attr) / sizeof(HTAttr) - 1;
		HTML_DTD->tags[HTML_INPUT].attributes = input_attr;
		HTML_DTD->tags[HTML_INPUT].number_of_attributes = sizeof(input_attr) / sizeof(HTAttr) - 1;
		HTML_DTD->tags[HTML_TEXTAREA].attributes = textarea_attr;
		HTML_DTD->tags[HTML_TEXTAREA].number_of_attributes = sizeof(textarea_attr) / sizeof(HTAttr) - 1;
		HTML_DTD->tags[HTML_P].attributes = p_attr;
		HTML_DTD->tags[HTML_P].number_of_attributes = sizeof(p_attr) / sizeof(HTAttr) - 1;
		HTML_DTD->tags[HTML_A].attributes = a_attr;
		HTML_DTD->tags[HTML_A].number_of_attributes = sizeof(a_attr) / sizeof(HTAttr) - 1;
		//HTML_DTD->tags[HTML_I].attributes = a_attr;
		HTML_DTD->tags[HTML_I].number_of_attributes = 0;

		// Set a request timeout
//		HTHost_setEventTimeout (30000);
//		HTHost_setActiveTimeout (30000);
//		HTHost_setPersistTimeout (30000);

		// Initialized
		initialized = true;
	}
}

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