htinit.c

www工具包

/*								       HTInit.c
**	CONFIGURATION-SPECIFIC INITIALIALIZATION
**
**	(c) COPYRIGHT MIT 1995.
**	Please first read the full copyright statement in the file COPYRIGH.
**	@(#) $Id: HTInit.c,v 2.95 1999/02/07 18:29:44 frystyk Exp $
**
**	Define a basic set of suffixes and presentations
*/

/* Library include files */
#include "wwwsys.h"
#include "WWWUtil.h"
#include "WWWCore.h"

#ifdef HT_MUX
#include "WWWMux.h"
#endif

#include "HTInit.h"				         /* Implemented here */

#ifndef W3C_ICONS
#define W3C_ICONS	"w3c-icons"
#endif

#define ICON_LOCATION	"/icons/"

/* ------------------------------------------------------------------------- */

/*	BINDINGS BETWEEN A SOURCE MEDIA TYPE AND A DEST MEDIA TYPE (CONVERSION)
**	----------------------------------------------------------------------
**	Not done automaticly - may be done by application!
*/
PUBLIC void HTConverterInit (HTList * c)
{
    /*
    ** You can get debug information out through the debug stream if you set
    ** the debug format appropriately
    */
    HTConversion_add(c,"*/*",			"www/debug",	HTBlackHoleConverter,	1.0, 0.0, 0.0);

    /*
    **  Set our own local file save stream for the MIME parser so that 
    **  we know how to dump to local disk in case we get content type
    **  application/octect stream, or an encoding that we don't know.
    */
    HTMIME_setSaveStream (HTSaveLocally);

    /*
    ** These are converters that converts to something other than www/present,
    ** that is not directly outputting someting to the user on the screen
    */
    HTConversion_add(c,"message/rfc822",	"*/*",		HTMIMEConvert,	1.0, 0.0, 0.0);
    HTConversion_add(c,"message/x-rfc822-foot",	"*/*",		HTMIMEFooter,	1.0, 0.0, 0.0);
    HTConversion_add(c,"message/x-rfc822-head",	"*/*",		HTMIMEHeader,	1.0, 0.0, 0.0);
    HTConversion_add(c,"message/x-rfc822-cont",	"*/*",		HTMIMEContinue,	1.0, 0.0, 0.0);
    HTConversion_add(c,"message/x-rfc822-partial","*/*",	HTMIMEPartial,	1.0, 0.0, 0.0);
    HTConversion_add(c,"multipart/*",		"*/*",		HTBoundary,	1.0, 0.0, 0.0);
    HTConversion_add(c,"text/plain",		"text/html",	HTPlainToHTML,	1.0, 0.0, 0.0);

    /*
    ** The following conversions are converting ASCII output from various
    ** protocols to HTML objects.
    */
    HTConversion_add(c,"text/x-http",		"*/*",		HTTPStatus_new,	1.0, 0.0, 0.0);

#if 0
    HTConversion_add(c,"text/x-gopher",		"www/present",	HTGopherMenu,	1.0, 0.0, 0.0);
    HTConversion_add(c,"text/x-cso",		"www/present",	HTGopherCSO,	1.0, 0.0, 0.0);
    HTConversion_add(c,"text/x-wais-source",	"*/*",		HTWSRCConvert, 	1.0, 0.0, 0.0);
#endif

    HTConversion_add(c,"text/x-nntp-list",	"*/*",		HTNewsList,	1.0, 0.0, 0.0);
    HTConversion_add(c,"text/x-nntp-over",	"*/*",		HTNewsGroup,	1.0, 0.0, 0.0);

    /*
    ** If we have the XML expat parser linked in
    */
#ifdef HT_EXPAT
    HTConversion_add(c, "text/xml",		"*/*",		HTXML_new,	1.0, 0.0, 0.0);
    HTConversion_add(c, "application/xml",	"*/*",		HTXML_new,	1.0, 0.0, 0.0);
#endif

    /*
    ** We also register a special content type guess stream that can figure out
    ** the content type by reading the first bytes of the stream
    */
    HTConversion_add(c,"www/unknown",		"*/*",		HTGuess_new,	1.0, 0.0, 0.0);

    /*
    ** Register a persistent cache stream which can save an object to local
    ** file
    */
    HTConversion_add(c,"www/cache",		"*/*",		HTCacheWriter,	1.0, 0.0, 0.0);
    HTConversion_add(c,"www/cache-append",	"*/*",		HTCacheAppend,	1.0, 0.0, 0.0);

    /*
    ** Handling Rule files is handled just like any other stream
    ** This converter reads a rule file and generates the rules
    */
    HTConversion_add(c,"application/x-www-rules","*/*",		HTRules,	1.0, 0.0, 0.0);

    /*
    ** This dumps all other formats to local disk without any further
    ** action taken
    */
    HTConversion_add(c,"*/*",			"www/present",	HTSaveConverter, 0.3, 0.0, 0.0);
}

/*	BINDINGS BETWEEN MEDIA TYPES AND EXTERNAL VIEWERS/PRESENTERS
**	------------------------------------------------------------
**	Not done automaticly - may be done by application!
**	The data objects are stored in temporary files before the external
**	program is called
*/
PUBLIC void HTPresenterInit (HTList * c)
{
    /*
    **  First we set the special "presenter" stream that writes to a
    **  temporary file before executing the external presenter
    */
    HTPresentation_setConverter(HTSaveAndExecute);

#ifdef NeXT
    HTPresentation_add(c,"application/postscript", "open %s",	NULL, 1.0, 2.0, 0.0);
    /* The following needs the GIF previewer -- you might not have it. */

    HTPresentation_add(c,"image/gif", 		"open %s", 	NULL, 0.3, 2.0, 0.0);
    HTPresentation_add(c,"image/tiff", 	"open %s", 	NULL, 1.0, 2.0, 0.0);
    HTPresentation_add(c,"audio/basic", 	"open %s", 	NULL, 1.0, 2.0, 0.0);
    HTPresentation_add(c,"*/*", 		"open %s", 	NULL, 0.05, 0.0, 0.0); 
#else
    if (getenv("DISPLAY")) {	/* Must have X11 */
	HTPresentation_add(c,"application/postscript", "ghostview %s",	NULL, 1.0, 3.0, 0.0);
	HTPresentation_add(c,"image/gif", 	"xv %s",	NULL, 1.0, 3.0, 0.0);
	HTPresentation_add(c,"image/tiff", 	"xv %s",	NULL, 1.0, 3.0, 0.0);
	HTPresentation_add(c,"image/jpeg", 	"xv %s",	NULL, 1.0, 3.0, 0.0);
 	HTPresentation_add(c,"image/png",	"xv %s",	NULL, 1.0, 3.0, 0.0);
    }
#endif
}


/*	PRESENTERS AND CONVERTERS AT THE SAME TIME
**	------------------------------------------
**	Not done automaticly - may be done by application!
**	This function is only defined in order to preserve backward
**	compatibility.
*/
PUBLIC void HTFormatInit (HTList * c)
{
    HTConverterInit(c);
    HTPresenterInit(c);

}

/*	BINDINGS BETWEEN A TRANSFER ENCODING AND CODERS / DECODERS
**	----------------------------------------------------------
**	Not done automaticly - may be done by application!
*/
PUBLIC void HTTransferEncoderInit (HTList * c)
{
#ifdef HT_ZLIB
    HTCoding_add(c, "deflate", NULL, HTZLib_inflate, 1.0);
#endif
    HTCoding_add(c, "chunked", HTChunkedEncoder, HTChunkedDecoder, 1.0);
}

/*	BINDINGS BETWEEN A CONTENT ENCODING AND CODERS / DECODERS
**	---------------------------------------------------------
**	Not done automaticly - may be done by application!
*/
PUBLIC void HTContentEncoderInit (HTList * c)
{
#ifdef HT_ZLIB
    HTCoding_add(c, "deflate", NULL, HTZLib_inflate, 1.0);
#endif /* HT_ZLIB */
}

/*	REGISTER BEFORE FILTERS
**	-----------------------
**	The BEFORE filters handle proxies, caches, rule files etc.
**	The filters are called in the order by which the are registered
**	Not done automaticly - may be done by application!
*/
PUBLIC void HTBeforeInit (void)
{
#if 0
    /* Often handled better by the application */
    HTNet_addBefore(HTMemoryCacheFilter,	NULL, 		NULL, HT_FILTER_MIDDLE);
#endif

#if 0
    /* This is now done by HTCacheInit */
    HTNet_addBefore(HTCacheFilter,		"http://*",	NULL, HT_FILTER_MIDDLE);
#endif

    HTNet_addBefore(HTCredentialsFilter,	"http://*",	NULL, HT_FILTER_LATE);
    HTNet_addBefore(HTPEP_beforeFilter, 	"http://*",	NULL, HT_FILTER_LATE);
    HTNet_addBefore(HTRuleFilter,		NULL,		NULL, HT_FILTER_LATE);
    HTNet_addBefore(HTProxyFilter,		NULL,		NULL, HT_FILTER_LATE);
}

/*	REGISTER AFTER FILTERS
**	----------------------
**	The AFTER filters handle error messages, logging, redirection,
**	authentication etc.
**	The filters are called in the order by which the are registered
**	Not done automaticly - may be done by application!
*/
PUBLIC void HTAfterInit (void)
{
    HTNet_addAfter(HTAuthFilter, 	"http://*",	NULL, HT_NO_ACCESS, 	HT_FILTER_MIDDLE);
    HTNet_addAfter(HTAuthFilter, 	"http://*",	NULL, HT_REAUTH, 	HT_FILTER_MIDDLE);
    HTNet_addAfter(HTPEP_afterFilter, 	"http://*",	NULL, HT_ALL, 		HT_FILTER_MIDDLE);
    HTNet_addAfter(HTRedirectFilter, 	"http://*",	NULL, HT_PERM_REDIRECT, HT_FILTER_MIDDLE);
    HTNet_addAfter(HTRedirectFilter, 	"http://*",	NULL, HT_FOUND, 	HT_FILTER_MIDDLE);
    HTNet_addAfter(HTRedirectFilter,	"http://*",	NULL, HT_SEE_OTHER,	HT_FILTER_MIDDLE);
    HTNet_addAfter(HTRedirectFilter, 	"http://*",	NULL, HT_TEMP_REDIRECT, HT_FILTER_MIDDLE);
    HTNet_addAfter(HTAuthInfoFilter, 	"http://*",	NULL, HT_ALL, 		HT_FILTER_MIDDLE);
    HTNet_addAfter(HTUseProxyFilter, 	"http://*",	NULL, HT_USE_PROXY, 	HT_FILTER_MIDDLE);

#if 0
    /* This is now done by HTCacheInit */
    HTNet_addAfter(HTCacheUpdateFilter, "http://*",	NULL, HT_NOT_MODIFIED, 	HT_FILTER_MIDDLE);
#endif

    HTNet_addAfter(HTInfoFilter, 	NULL,		NULL, HT_ALL,		HT_FILTER_LATE);
}

/*	REGISTER DEFAULT AUTHENTICATION SCHEMES